drivers/scsi/qla2xxx/qla_init.c

   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/delay.h>
  22 #include <linux/vmalloc.h>
  23 #include <linux/firmware.h>
  24 #include <scsi/scsi_transport_fc.h>
  25
  26 #include "qla_devtbl.h"
  27
  28 /* XXX(hch): this is ugly, but we don't want to pull in exioctl.h */
  29 #ifndef EXT_IS_LUN_BIT_SET
  30 #define EXT_IS_LUN_BIT_SET(P,L) \
  31     (((P)->mask[L/8] & (0x80 >> (L%8)))?1:0)
  32 #define EXT_SET_LUN_BIT(P,L) \
  33     ((P)->mask[L/8] |= (0x80 >> (L%8)))
  34 #endif
  35
  36 /*
  37 *  QLogic ISP2x00 Hardware Support Function Prototypes.
  38 */
  39 static int qla2x00_isp_firmware(scsi_qla_host_t *);
  40 static void qla2x00_resize_request_q(scsi_qla_host_t *);
  41 static int qla2x00_setup_chip(scsi_qla_host_t *);
  42 static void qla2x00_init_response_q_entries(scsi_qla_host_t *);
  43 static int qla2x00_init_rings(scsi_qla_host_t *);
  44 static int qla2x00_fw_ready(scsi_qla_host_t *);
  45 static int qla2x00_configure_hba(scsi_qla_host_t *);
  46 static int qla2x00_configure_loop(scsi_qla_host_t *);
  47 static int qla2x00_configure_local_loop(scsi_qla_host_t *);
  48 static void qla2x00_update_fcport(scsi_qla_host_t *, fc_port_t *);
  49 static int qla2x00_configure_fabric(scsi_qla_host_t *);
  50 static int qla2x00_find_all_fabric_devs(scsi_qla_host_t *, struct list_head *);
  51 static int qla2x00_device_resync(scsi_qla_host_t *);
  52 static int qla2x00_fabric_dev_login(scsi_qla_host_t *, fc_port_t *,
  53     uint16_t *);
  54
  55 static int qla2x00_restart_isp(scsi_qla_host_t *);
  56
  57 /****************************************************************************/
  58 /*                QLogic ISP2x00 Hardware Support Functions.                */
  59 /****************************************************************************/
  60
  61 /*
  62 * qla2x00_initialize_adapter
  63 *      Initialize board.
  64 *
  65 * Input:
  66 *      ha = adapter block pointer.
  67 *
  68 * Returns:
  69 *      0 = success
  70 */
  71 int
  72 qla2x00_initialize_adapter(scsi_qla_host_t *ha)
  73 {
  74         int     rval;
  75         uint8_t restart_risc = 0;
  76         uint8_t retry;
  77         uint32_t wait_time;
  78
  79         /* Clear adapter flags. */
  80         ha->flags.online = 0;
  81         ha->flags.reset_active = 0;
  82         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
  83         atomic_set(&ha->loop_state, LOOP_DOWN);
  84         ha->device_flags = 0;
  85         ha->dpc_flags = 0;
  86         ha->flags.management_server_logged_in = 0;
  87         ha->marker_needed = 0;
  88         ha->mbx_flags = 0;
  89         ha->isp_abort_cnt = 0;
  90         ha->beacon_blink_led = 0;
  91
  92         qla_printk(KERN_INFO, ha, "Configuring PCI space...\n");
  93         rval = ha->isp_ops.pci_config(ha);
  94         if (rval) {
  95                 DEBUG2(printk("scsi(%ld): Unable to configure PCI space=n",
  96                     ha->host_no));
  97                 return (rval);
  98         }
  99
 100         ha->isp_ops.reset_chip(ha);
 101
 102         qla_printk(KERN_INFO, ha, "Configure NVRAM parameters...\n");
 103
 104         ha->isp_ops.nvram_config(ha);
 105
 106         qla_printk(KERN_INFO, ha, "Verifying loaded RISC code...\n");
 107
 108         retry = 10;
 109         /*
 110          * Try to configure the loop.
 111          */
 112         do {
 113                 restart_risc = 0;
 114
 115                 /* If firmware needs to be loaded */
 116                 if (qla2x00_isp_firmware(ha) != QLA_SUCCESS) {
 117                         if ((rval = ha->isp_ops.chip_diag(ha)) == QLA_SUCCESS) {
 118                                 rval = qla2x00_setup_chip(ha);
 119                         }
 120                 }
 121
 122                 if (rval == QLA_SUCCESS &&
 123                     (rval = qla2x00_init_rings(ha)) == QLA_SUCCESS) {
 124 check_fw_ready_again:
 125                         /*
 126                          * Wait for a successful LIP up to a maximum
 127                          * of (in seconds): RISC login timeout value,
 128                          * RISC retry count value, and port down retry
 129                          * value OR a minimum of 4 seconds OR If no
 130                          * cable, only 5 seconds.
 131                          */
 132                         rval = qla2x00_fw_ready(ha);
 133                         if (rval == QLA_SUCCESS) {
 134                                 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 135
 136                                 /* Issue a marker after FW becomes ready. */
 137                                 qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
 138
 139                                 /*
 140                                  * Wait at most MAX_TARGET RSCNs for a stable
 141                                  * link.
 142                                  */
 143                                 wait_time = 256;
 144                                 do {
 145                                         clear_bit(LOOP_RESYNC_NEEDED,
 146                                             &ha->dpc_flags);
 147                                         rval = qla2x00_configure_loop(ha);
 148
 149                                         if (test_and_clear_bit(ISP_ABORT_NEEDED,
 150                                             &ha->dpc_flags)) {
 151                                                 restart_risc = 1;
 152                                                 break;
 153                                         }
 154
 155                                         /*
 156                                          * If loop state change while we were
 157                                          * discoverying devices then wait for
 158                                          * LIP to complete
 159                                          */
 160
 161                                         if (atomic_read(&ha->loop_state) ==
 162                                             LOOP_DOWN && retry--) {
 163                                                 goto check_fw_ready_again;
 164                                         }
 165                                         wait_time--;
 166                                 } while (!atomic_read(&ha->loop_down_timer) &&
 167                                     retry &&
 168                                     wait_time &&
 169                                     (test_bit(LOOP_RESYNC_NEEDED,
 170                                         &ha->dpc_flags)));
 171
 172                                 if (wait_time == 0)
 173                                         rval = QLA_FUNCTION_FAILED;
 174                         } else if (ha->device_flags & DFLG_NO_CABLE)
 175                                 /* If no cable, then all is good. */
 176                                 rval = QLA_SUCCESS;
 177                 }
 178         } while (restart_risc && retry--);
 179
 180         if (rval == QLA_SUCCESS) {
 181                 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 182                 qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
 183                 ha->marker_needed = 0;
 184
 185                 ha->flags.online = 1;
 186         } else {
 187                 DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
 188         }
 189
 190         return (rval);
 191 }
 192
 193 /**
 194  * qla2100_pci_config() - Setup ISP21xx PCI configuration registers.
 195  * @ha: HA context
 196  *
 197  * Returns 0 on success.
 198  */
 199 int
 200 qla2100_pci_config(scsi_qla_host_t *ha)
 201 {
 202         uint16_t w, mwi;
 203         unsigned long flags;
 204         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 205
 206         pci_set_master(ha->pdev);
 207         mwi = 0;
 208         if (pci_set_mwi(ha->pdev))
 209                 mwi = PCI_COMMAND_INVALIDATE;
 210         pci_read_config_word(ha->pdev, PCI_REVISION_ID, &ha->revision);
 211
 212         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 213         w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
 214         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 215
 216         /* Reset expansion ROM address decode enable */
 217         pci_read_config_word(ha->pdev, PCI_ROM_ADDRESS, &w);
 218         w &= ~PCI_ROM_ADDRESS_ENABLE;
 219         pci_write_config_word(ha->pdev, PCI_ROM_ADDRESS, w);
 220
 221         /* Get PCI bus information. */
 222         spin_lock_irqsave(&ha->hardware_lock, flags);
 223         ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
 224         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 225
 226         return QLA_SUCCESS;
 227 }
 228
 229 /**
 230  * qla2300_pci_config() - Setup ISP23xx PCI configuration registers.
 231  * @ha: HA context
 232  *
 233  * Returns 0 on success.
 234  */
 235 int
 236 qla2300_pci_config(scsi_qla_host_t *ha)
 237 {
 238         uint16_t        w, mwi;
 239         unsigned long   flags = 0;
 240         uint32_t        cnt;
 241         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 242
 243         pci_set_master(ha->pdev);
 244         mwi = 0;
 245         if (pci_set_mwi(ha->pdev))
 246                 mwi = PCI_COMMAND_INVALIDATE;
 247         pci_read_config_word(ha->pdev, PCI_REVISION_ID, &ha->revision);
 248
 249         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 250         w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
 251
 252         if (IS_QLA2322(ha) || IS_QLA6322(ha))
 253                 w &= ~PCI_COMMAND_INTX_DISABLE;
 254
 255         /*
 256          * If this is a 2300 card and not 2312, reset the
 257          * COMMAND_INVALIDATE due to a bug in the 2300. Unfortunately,
 258          * the 2310 also reports itself as a 2300 so we need to get the
 259          * fb revision level -- a 6 indicates it really is a 2300 and
 260          * not a 2310.
 261          */
 262         if (IS_QLA2300(ha)) {
 263                 spin_lock_irqsave(&ha->hardware_lock, flags);
 264
 265                 /* Pause RISC. */
 266                 WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
 267                 for (cnt = 0; cnt < 30000; cnt++) {
 268                         if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) != 0)
 269                                 break;
 270
 271                         udelay(10);
 272                 }
 273
 274                 /* Select FPM registers. */
 275                 WRT_REG_WORD(&reg->ctrl_status, 0x20);
 276                 RD_REG_WORD(&reg->ctrl_status);
 277
 278                 /* Get the fb rev level */
 279                 ha->fb_rev = RD_FB_CMD_REG(ha, reg);
 280
 281                 if (ha->fb_rev == FPM_2300)
 282                         w &= ~PCI_COMMAND_INVALIDATE;
 283
 284                 /* Deselect FPM registers. */
 285                 WRT_REG_WORD(&reg->ctrl_status, 0x0);
 286                 RD_REG_WORD(&reg->ctrl_status);
 287
 288                 /* Release RISC module. */
 289                 WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
 290                 for (cnt = 0; cnt < 30000; cnt++) {
 291                         if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) == 0)
 292                                 break;
 293
 294                         udelay(10);
 295                 }
 296
 297                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
 298         }
 299         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 300
 301         pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);
 302
 303         /* Reset expansion ROM address decode enable */
 304         pci_read_config_word(ha->pdev, PCI_ROM_ADDRESS, &w);
 305         w &= ~PCI_ROM_ADDRESS_ENABLE;
 306         pci_write_config_word(ha->pdev, PCI_ROM_ADDRESS, w);
 307
 308         /* Get PCI bus information. */
 309         spin_lock_irqsave(&ha->hardware_lock, flags);
 310         ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
 311         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 312
 313         return QLA_SUCCESS;
 314 }
 315
 316 /**
 317  * qla24xx_pci_config() - Setup ISP24xx PCI configuration registers.
 318  * @ha: HA context
 319  *
 320  * Returns 0 on success.
 321  */
 322 int
 323 qla24xx_pci_config(scsi_qla_host_t *ha)
 324 {
 325         uint16_t w, mwi;
 326         unsigned long flags = 0;
 327         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
 328         int pcix_cmd_reg, pcie_dctl_reg;
 329
 330         pci_set_master(ha->pdev);
 331         mwi = 0;
 332         if (pci_set_mwi(ha->pdev))
 333                 mwi = PCI_COMMAND_INVALIDATE;
 334         pci_read_config_word(ha->pdev, PCI_REVISION_ID, &ha->revision);
 335
 336         pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 337         w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
 338         w &= ~PCI_COMMAND_INTX_DISABLE;
 339         pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 340
 341         pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);
 342
 343         /* PCI-X -- adjust Maximum Memory Read Byte Count (2048). */
 344         pcix_cmd_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_PCIX);
 345         if (pcix_cmd_reg) {
 346                 uint16_t pcix_cmd;
 347
 348                 pcix_cmd_reg += PCI_X_CMD;
 349                 pci_read_config_word(ha->pdev, pcix_cmd_reg, &pcix_cmd);
 350                 pcix_cmd &= ~PCI_X_CMD_MAX_READ;
 351                 pcix_cmd |= 0x0008;
 352                 pci_write_config_word(ha->pdev, pcix_cmd_reg, pcix_cmd);
 353         }
 354
 355         /* PCIe -- adjust Maximum Read Request Size (2048). */
 356         pcie_dctl_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
 357         if (pcie_dctl_reg) {
 358                 uint16_t pcie_dctl;
 359
 360                 pcie_dctl_reg += PCI_EXP_DEVCTL;
 361                 pci_read_config_word(ha->pdev, pcie_dctl_reg, &pcie_dctl);
 362                 pcie_dctl &= ~PCI_EXP_DEVCTL_READRQ;
 363                 pcie_dctl |= 0x4000;
 364                 pci_write_config_word(ha->pdev, pcie_dctl_reg, pcie_dctl);
 365         }
 366
 367         /* Reset expansion ROM address decode enable */
 368         pci_read_config_word(ha->pdev, PCI_ROM_ADDRESS, &w);
 369         w &= ~PCI_ROM_ADDRESS_ENABLE;
 370         pci_write_config_word(ha->pdev, PCI_ROM_ADDRESS, w);
 371
 372         /* Get PCI bus information. */
 373         spin_lock_irqsave(&ha->hardware_lock, flags);
 374         ha->pci_attr = RD_REG_DWORD(&reg->ctrl_status);
 375         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 376
 377         return QLA_SUCCESS;
 378 }
 379
 380 /**
 381  * qla2x00_isp_firmware() - Choose firmware image.
 382  * @ha: HA context
 383  *
 384  * Returns 0 on success.
 385  */
 386 static int
 387 qla2x00_isp_firmware(scsi_qla_host_t *ha)
 388 {
 389         int  rval;
 390
 391         /* Assume loading risc code */
 392         rval = QLA_FUNCTION_FAILED;
 393
 394         if (ha->flags.disable_risc_code_load) {
 395                 DEBUG2(printk("scsi(%ld): RISC CODE NOT loaded\n",
 396                     ha->host_no));
 397                 qla_printk(KERN_INFO, ha, "RISC CODE NOT loaded\n");
 398
 399                 /* Verify checksum of loaded RISC code. */
 400                 rval = qla2x00_verify_checksum(ha,
 401                     IS_QLA24XX(ha) || IS_QLA25XX(ha) ? RISC_SADDRESS :
 402                     *ha->brd_info->fw_info[0].fwstart);
 403         }
 404
 405         if (rval) {
 406                 DEBUG2_3(printk("scsi(%ld): **** Load RISC code ****\n",
 407                     ha->host_no));
 408         }
 409
 410         return (rval);
 411 }
 412
 413 /**
 414  * qla2x00_reset_chip() - Reset ISP chip.
 415  * @ha: HA context
 416  *
 417  * Returns 0 on success.
 418  */
 419 void
 420 qla2x00_reset_chip(scsi_qla_host_t *ha)
 421 {
 422         unsigned long   flags = 0;
 423         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 424         uint32_t        cnt;
 425         unsigned long   mbx_flags = 0;
 426         uint16_t        cmd;
 427
 428         ha->isp_ops.disable_intrs(ha);
 429
 430         spin_lock_irqsave(&ha->hardware_lock, flags);
 431
 432         /* Turn off master enable */
 433         cmd = 0;
 434         pci_read_config_word(ha->pdev, PCI_COMMAND, &cmd);
 435         cmd &= ~PCI_COMMAND_MASTER;
 436         pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);
 437
 438         if (!IS_QLA2100(ha)) {
 439                 /* Pause RISC. */
 440                 WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
 441                 if (IS_QLA2200(ha) || IS_QLA2300(ha)) {
 442                         for (cnt = 0; cnt < 30000; cnt++) {
 443                                 if ((RD_REG_WORD(&reg->hccr) &
 444                                     HCCR_RISC_PAUSE) != 0)
 445                                         break;
 446                                 udelay(100);
 447                         }
 448                 } else {
 449                         RD_REG_WORD(&reg->hccr);        /* PCI Posting. */
 450                         udelay(10);
 451                 }
 452
 453                 /* Select FPM registers. */
 454                 WRT_REG_WORD(&reg->ctrl_status, 0x20);
 455                 RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
 456
 457                 /* FPM Soft Reset. */
 458                 WRT_REG_WORD(&reg->fpm_diag_config, 0x100);
 459                 RD_REG_WORD(&reg->fpm_diag_config);     /* PCI Posting. */
 460
 461                 /* Toggle Fpm Reset. */
 462                 if (!IS_QLA2200(ha)) {
 463                         WRT_REG_WORD(&reg->fpm_diag_config, 0x0);
 464                         RD_REG_WORD(&reg->fpm_diag_config); /* PCI Posting. */
 465                 }
 466
 467                 /* Select frame buffer registers. */
 468                 WRT_REG_WORD(&reg->ctrl_status, 0x10);
 469                 RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
 470
 471                 /* Reset frame buffer FIFOs. */
 472                 if (IS_QLA2200(ha)) {
 473                         WRT_FB_CMD_REG(ha, reg, 0xa000);
 474                         RD_FB_CMD_REG(ha, reg);         /* PCI Posting. */
 475                 } else {
 476                         WRT_FB_CMD_REG(ha, reg, 0x00fc);
 477
 478                         /* Read back fb_cmd until zero or 3 seconds max */
 479                         for (cnt = 0; cnt < 3000; cnt++) {
 480                                 if ((RD_FB_CMD_REG(ha, reg) & 0xff) == 0)
 481                                         break;
 482                                 udelay(100);
 483                         }
 484                 }
 485
 486                 /* Select RISC module registers. */
 487                 WRT_REG_WORD(&reg->ctrl_status, 0);
 488                 RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
 489
 490                 /* Reset RISC processor. */
 491                 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 492                 RD_REG_WORD(&reg->hccr);                /* PCI Posting. */
 493
 494                 /* Release RISC processor. */
 495                 WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
 496                 RD_REG_WORD(&reg->hccr);                /* PCI Posting. */
 497         }
 498
 499         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 500         WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
 501
 502         /* Reset ISP chip. */
 503         WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);
 504
 505         /* Wait for RISC to recover from reset. */
 506         if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
 507                 /*
 508                  * It is necessary to for a delay here since the card doesn't
 509                  * respond to PCI reads during a reset. On some architectures
 510                  * this will result in an MCA.
 511                  */
 512                 udelay(20);
 513                 for (cnt = 30000; cnt; cnt--) {
 514                         if ((RD_REG_WORD(&reg->ctrl_status) &
 515                             CSR_ISP_SOFT_RESET) == 0)
 516                                 break;
 517                         udelay(100);
 518                 }
 519         } else
 520                 udelay(10);
 521
 522         /* Reset RISC processor. */
 523         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 524
 525         WRT_REG_WORD(&reg->semaphore, 0);
 526
 527         /* Release RISC processor. */
 528         WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
 529         RD_REG_WORD(&reg->hccr);                        /* PCI Posting. */
 530
 531         if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
 532                 for (cnt = 0; cnt < 30000; cnt++) {
 533                         if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)))
 534                                 spin_lock_irqsave(&ha->mbx_reg_lock, mbx_flags);
 535
 536                         if (RD_MAILBOX_REG(ha, reg, 0) != MBS_BUSY) {
 537                                 if (!(test_bit(ABORT_ISP_ACTIVE,
 538                                     &ha->dpc_flags)))
 539                                         spin_unlock_irqrestore(
 540                                             &ha->mbx_reg_lock, mbx_flags);
 541                                 break;
 542                         }
 543
 544                         if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)))
 545                                 spin_unlock_irqrestore(&ha->mbx_reg_lock,
 546                                     mbx_flags);
 547
 548                         udelay(100);
 549                 }
 550         } else
 551                 udelay(100);
 552
 553         /* Turn on master enable */
 554         cmd |= PCI_COMMAND_MASTER;
 555         pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);
 556
 557         /* Disable RISC pause on FPM parity error. */
 558         if (!IS_QLA2100(ha)) {
 559                 WRT_REG_WORD(&reg->hccr, HCCR_DISABLE_PARITY_PAUSE);
 560                 RD_REG_WORD(&reg->hccr);                /* PCI Posting. */
 561         }
 562
 563         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 564 }
 565
 566 /**
 567  * qla24xx_reset_risc() - Perform full reset of ISP24xx RISC.
 568  * @ha: HA context
 569  *
 570  * Returns 0 on success.
 571  */
 572 static inline void
 573 qla24xx_reset_risc(scsi_qla_host_t *ha)
 574 {
 575         unsigned long flags = 0;
 576         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
 577         uint32_t cnt, d2;
 578
 579         spin_lock_irqsave(&ha->hardware_lock, flags);
 580
 581         /* Reset RISC. */
 582         WRT_REG_DWORD(&reg->ctrl_status, CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
 583         for (cnt = 0; cnt < 30000; cnt++) {
 584                 if ((RD_REG_DWORD(&reg->ctrl_status) & CSRX_DMA_ACTIVE) == 0)
 585                         break;
 586
 587                 udelay(10);
 588         }
 589
 590         WRT_REG_DWORD(&reg->ctrl_status,
 591             CSRX_ISP_SOFT_RESET|CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
 592         RD_REG_DWORD(&reg->ctrl_status);
 593
 594         /* Wait for firmware to complete NVRAM accesses. */
 595         udelay(5);
 596         d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
 597         for (cnt = 10000 ; cnt && d2; cnt--) {
 598                 udelay(5);
 599                 d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
 600                 barrier();
 601         }
 602
 603         udelay(20);
 604         d2 = RD_REG_DWORD(&reg->ctrl_status);
 605         for (cnt = 6000000 ; cnt && (d2 & CSRX_ISP_SOFT_RESET); cnt--) {
 606                 udelay(5);
 607                 d2 = RD_REG_DWORD(&reg->ctrl_status);
 608                 barrier();
 609         }
 610
 611         WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
 612         RD_REG_DWORD(&reg->hccr);
 613
 614         WRT_REG_DWORD(&reg->hccr, HCCRX_REL_RISC_PAUSE);
 615         RD_REG_DWORD(&reg->hccr);
 616
 617         WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_RESET);
 618         RD_REG_DWORD(&reg->hccr);
 619
 620         d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
 621         for (cnt = 6000000 ; cnt && d2; cnt--) {
 622                 udelay(5);
 623                 d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
 624                 barrier();
 625         }
 626
 627         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 628 }
 629
 630 /**
 631  * qla24xx_reset_chip() - Reset ISP24xx chip.
 632  * @ha: HA context
 633  *
 634  * Returns 0 on success.
 635  */
 636 void
 637 qla24xx_reset_chip(scsi_qla_host_t *ha)
 638 {
 639         ha->isp_ops.disable_intrs(ha);
 640
 641         /* Perform RISC reset. */
 642         qla24xx_reset_risc(ha);
 643 }
 644
 645 /**
 646  * qla2x00_chip_diag() - Test chip for proper operation.
 647  * @ha: HA context
 648  *
 649  * Returns 0 on success.
 650  */
 651 int
 652 qla2x00_chip_diag(scsi_qla_host_t *ha)
 653 {
 654         int             rval;
 655         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 656         unsigned long   flags = 0;
 657         uint16_t        data;
 658         uint32_t        cnt;
 659         uint16_t        mb[5];
 660
 661         /* Assume a failed state */
 662         rval = QLA_FUNCTION_FAILED;
 663
 664         DEBUG3(printk("scsi(%ld): Testing device at %lx.\n",
 665             ha->host_no, (u_long)&reg->flash_address));
 666
 667         spin_lock_irqsave(&ha->hardware_lock, flags);
 668
 669         /* Reset ISP chip. */
 670         WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);
 671
 672         /*
 673          * We need to have a delay here since the card will not respond while
 674          * in reset causing an MCA on some architectures.
 675          */
 676         udelay(20);
 677         data = qla2x00_debounce_register(&reg->ctrl_status);
 678         for (cnt = 6000000 ; cnt && (data & CSR_ISP_SOFT_RESET); cnt--) {
 679                 udelay(5);
 680                 data = RD_REG_WORD(&reg->ctrl_status);
 681                 barrier();
 682         }
 683
 684         if (!cnt)
 685                 goto chip_diag_failed;
 686
 687         DEBUG3(printk("scsi(%ld): Reset register cleared by chip reset\n",
 688             ha->host_no));
 689
 690         /* Reset RISC processor. */
 691         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 692         WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
 693
 694         /* Workaround for QLA2312 PCI parity error */
 695         if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
 696                 data = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 0));
 697                 for (cnt = 6000000; cnt && (data == MBS_BUSY); cnt--) {
 698                         udelay(5);
 699                         data = RD_MAILBOX_REG(ha, reg, 0);
 700                         barrier();
 701                 }
 702         } else
 703                 udelay(10);
 704
 705         if (!cnt)
 706                 goto chip_diag_failed;
 707
 708         /* Check product ID of chip */
 709         DEBUG3(printk("scsi(%ld): Checking product ID of chip\n", ha->host_no));
 710
 711         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 712         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 713         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 714         mb[4] = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 4));
 715         if (mb[1] != PROD_ID_1 || (mb[2] != PROD_ID_2 && mb[2] != PROD_ID_2a) ||
 716             mb[3] != PROD_ID_3) {
 717                 qla_printk(KERN_WARNING, ha,
 718                     "Wrong product ID = 0x%x,0x%x,0x%x\n", mb[1], mb[2], mb[3]);
 719
 720                 goto chip_diag_failed;
 721         }
 722         ha->product_id[0] = mb[1];
 723         ha->product_id[1] = mb[2];
 724         ha->product_id[2] = mb[3];
 725         ha->product_id[3] = mb[4];
 726
 727         /* Adjust fw RISC transfer size */
 728         if (ha->request_q_length > 1024)
 729                 ha->fw_transfer_size = REQUEST_ENTRY_SIZE * 1024;
 730         else
 731                 ha->fw_transfer_size = REQUEST_ENTRY_SIZE *
 732                     ha->request_q_length;
 733
 734         if (IS_QLA2200(ha) &&
 735             RD_MAILBOX_REG(ha, reg, 7) == QLA2200A_RISC_ROM_VER) {
 736                 /* Limit firmware transfer size with a 2200A */
 737                 DEBUG3(printk("scsi(%ld): Found QLA2200A chip.\n",
 738                     ha->host_no));
 739
 740                 ha->fw_transfer_size = 128;
 741         }
 742
 743         /* Wrap Incoming Mailboxes Test. */
 744         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 745
 746         DEBUG3(printk("scsi(%ld): Checking mailboxes.\n", ha->host_no));
 747         rval = qla2x00_mbx_reg_test(ha);
 748         if (rval) {
 749                 DEBUG(printk("scsi(%ld): Failed mailbox send register test\n",
 750                     ha->host_no));
 751                 qla_printk(KERN_WARNING, ha,
 752                     "Failed mailbox send register test\n");
 753         }
 754         else {
 755                 /* Flag a successful rval */
 756                 rval = QLA_SUCCESS;
 757         }
 758         spin_lock_irqsave(&ha->hardware_lock, flags);
 759
 760 chip_diag_failed:
 761         if (rval)
 762                 DEBUG2_3(printk("scsi(%ld): Chip diagnostics **** FAILED "
 763                     "****\n", ha->host_no));
 764
 765         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 766
 767         return (rval);
 768 }
 769
 770 /**
 771  * qla24xx_chip_diag() - Test ISP24xx for proper operation.
 772  * @ha: HA context
 773  *
 774  * Returns 0 on success.
 775  */
 776 int
 777 qla24xx_chip_diag(scsi_qla_host_t *ha)
 778 {
 779         int rval;
 780
 781         /* Perform RISC reset. */
 782         qla24xx_reset_risc(ha);
 783
 784         ha->fw_transfer_size = REQUEST_ENTRY_SIZE * 1024;
 785
 786         rval = qla2x00_mbx_reg_test(ha);
 787         if (rval) {
 788                 DEBUG(printk("scsi(%ld): Failed mailbox send register test\n",
 789                     ha->host_no));
 790                 qla_printk(KERN_WARNING, ha,
 791                     "Failed mailbox send register test\n");
 792         } else {
 793                 /* Flag a successful rval */
 794                 rval = QLA_SUCCESS;
 795         }
 796
 797         return rval;
 798 }
 799
 800 static void
 801 qla2x00_alloc_fw_dump(scsi_qla_host_t *ha)
 802 {
 803         ha->fw_dumped = 0;
 804         ha->fw_dump24_len = sizeof(struct qla24xx_fw_dump);
 805         ha->fw_dump24_len += (ha->fw_memory_size - 0x100000) * sizeof(uint32_t);
 806         ha->fw_dump24 = vmalloc(ha->fw_dump24_len);
 807         if (ha->fw_dump24)
 808                 qla_printk(KERN_INFO, ha, "Allocated (%d KB) for firmware "
 809                     "dump...\n", ha->fw_dump24_len / 1024);
 810         else
 811                 qla_printk(KERN_WARNING, ha, "Unable to allocate (%d KB) for "
 812                     "firmware dump!!!\n", ha->fw_dump24_len / 1024);
 813 }
 814
 815 /**
 816  * qla2x00_resize_request_q() - Resize request queue given available ISP memory.
 817  * @ha: HA context
 818  *
 819  * Returns 0 on success.
 820  */
 821 static void
 822 qla2x00_resize_request_q(scsi_qla_host_t *ha)
 823 {
 824         int rval;
 825         uint16_t fw_iocb_cnt = 0;
 826         uint16_t request_q_length = REQUEST_ENTRY_CNT_2XXX_EXT_MEM;
 827         dma_addr_t request_dma;
 828         request_t *request_ring;
 829
 830         /* Valid only on recent ISPs. */
 831         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 832                 return;
 833
 834         if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
 835                 qla2x00_alloc_fw_dump(ha);
 836
 837         /* Retrieve IOCB counts available to the firmware. */
 838         rval = qla2x00_get_resource_cnts(ha, NULL, NULL, NULL, &fw_iocb_cnt);
 839         if (rval)
 840                 return;
 841         /* No point in continuing if current settings are sufficient. */
 842         if (fw_iocb_cnt < 1024)
 843                 return;
 844         if (ha->request_q_length >= request_q_length)
 845                 return;
 846
 847         /* Attempt to claim larger area for request queue. */
 848         request_ring = dma_alloc_coherent(&ha->pdev->dev,
 849             (request_q_length + 1) * sizeof(request_t), &request_dma,
 850             GFP_KERNEL);
 851         if (request_ring == NULL)
 852                 return;
 853
 854         /* Resize successful, report extensions. */
 855         qla_printk(KERN_INFO, ha, "Extended memory detected (%d KB)...\n",
 856             (ha->fw_memory_size + 1) / 1024);
 857         qla_printk(KERN_INFO, ha, "Resizing request queue depth "
 858             "(%d -> %d)...\n", ha->request_q_length, request_q_length);
 859
 860         /* Clear old allocations. */
 861         dma_free_coherent(&ha->pdev->dev,
 862             (ha->request_q_length + 1) * sizeof(request_t), ha->request_ring,
 863             ha->request_dma);
 864
 865         /* Begin using larger queue. */
 866         ha->request_q_length = request_q_length;
 867         ha->request_ring = request_ring;
 868         ha->request_dma = request_dma;
 869 }
 870
 871 /**
 872  * qla2x00_setup_chip() - Load and start RISC firmware.
 873  * @ha: HA context
 874  *
 875  * Returns 0 on success.
 876  */
 877 static int
 878 qla2x00_setup_chip(scsi_qla_host_t *ha)
 879 {
 880         int rval;
 881         uint32_t srisc_address = 0;
 882
 883         /* Load firmware sequences */
 884         rval = ha->isp_ops.load_risc(ha, &srisc_address);
 885         if (rval == QLA_SUCCESS) {
 886                 DEBUG(printk("scsi(%ld): Verifying Checksum of loaded RISC "
 887                     "code.\n", ha->host_no));
 888
 889                 rval = qla2x00_verify_checksum(ha, srisc_address);
 890                 if (rval == QLA_SUCCESS) {
 891                         /* Start firmware execution. */
 892                         DEBUG(printk("scsi(%ld): Checksum OK, start "
 893                             "firmware.\n", ha->host_no));
 894
 895                         rval = qla2x00_execute_fw(ha, srisc_address);
 896                         /* Retrieve firmware information. */
 897                         if (rval == QLA_SUCCESS && ha->fw_major_version == 0) {
 898                                 qla2x00_get_fw_version(ha,
 899                                     &ha->fw_major_version,
 900                                     &ha->fw_minor_version,
 901                                     &ha->fw_subminor_version,
 902                                     &ha->fw_attributes, &ha->fw_memory_size);
 903                                 qla2x00_resize_request_q(ha);
 904                         }
 905                 } else {
 906                         DEBUG2(printk(KERN_INFO
 907                             "scsi(%ld): ISP Firmware failed checksum.\n",
 908                             ha->host_no));
 909                 }
 910         }
 911
 912         if (rval) {
 913                 DEBUG2_3(printk("scsi(%ld): Setup chip **** FAILED ****.\n",
 914                     ha->host_no));
 915         }
 916
 917         return (rval);
 918 }
 919
 920 /**
 921  * qla2x00_init_response_q_entries() - Initializes response queue entries.
 922  * @ha: HA context
 923  *
 924  * Beginning of request ring has initialization control block already built
 925  * by nvram config routine.
 926  *
 927  * Returns 0 on success.
 928  */
 929 static void
 930 qla2x00_init_response_q_entries(scsi_qla_host_t *ha)
 931 {
 932         uint16_t cnt;
 933         response_t *pkt;
 934
 935         pkt = ha->response_ring_ptr;
 936         for (cnt = 0; cnt < ha->response_q_length; cnt++) {
 937                 pkt->signature = RESPONSE_PROCESSED;
 938                 pkt++;
 939         }
 940
 941 }
 942
 943 /**
 944  * qla2x00_update_fw_options() - Read and process firmware options.
 945  * @ha: HA context
 946  *
 947  * Returns 0 on success.
 948  */
 949 void
 950 qla2x00_update_fw_options(scsi_qla_host_t *ha)
 951 {
 952         uint16_t swing, emphasis, tx_sens, rx_sens;
 953
 954         memset(ha->fw_options, 0, sizeof(ha->fw_options));
 955         qla2x00_get_fw_options(ha, ha->fw_options);
 956
 957         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 958                 return;
 959
 960         /* Serial Link options. */
 961         DEBUG3(printk("scsi(%ld): Serial link options:\n",
 962             ha->host_no));
 963         DEBUG3(qla2x00_dump_buffer((uint8_t *)&ha->fw_seriallink_options,
 964             sizeof(ha->fw_seriallink_options)));
 965
 966         ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
 967         if (ha->fw_seriallink_options[3] & BIT_2) {
 968                 ha->fw_options[1] |= FO1_SET_EMPHASIS_SWING;
 969
 970                 /*  1G settings */
 971                 swing = ha->fw_seriallink_options[2] & (BIT_2 | BIT_1 | BIT_0);
 972                 emphasis = (ha->fw_seriallink_options[2] &
 973                     (BIT_4 | BIT_3)) >> 3;
 974                 tx_sens = ha->fw_seriallink_options[0] &
 975                     (BIT_3 | BIT_2 | BIT_1 | BIT_0);
 976                 rx_sens = (ha->fw_seriallink_options[0] &
 977                     (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
 978                 ha->fw_options[10] = (emphasis << 14) | (swing << 8);
 979                 if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
 980                         if (rx_sens == 0x0)
 981                                 rx_sens = 0x3;
 982                         ha->fw_options[10] |= (tx_sens << 4) | rx_sens;
 983                 } else if (IS_QLA2322(ha) || IS_QLA6322(ha))
 984                         ha->fw_options[10] |= BIT_5 |
 985                             ((rx_sens & (BIT_1 | BIT_0)) << 2) |
 986                             (tx_sens & (BIT_1 | BIT_0));
 987
 988                 /*  2G settings */
 989                 swing = (ha->fw_seriallink_options[2] &
 990                     (BIT_7 | BIT_6 | BIT_5)) >> 5;
 991                 emphasis = ha->fw_seriallink_options[3] & (BIT_1 | BIT_0);
 992                 tx_sens = ha->fw_seriallink_options[1] &
 993                     (BIT_3 | BIT_2 | BIT_1 | BIT_0);
 994                 rx_sens = (ha->fw_seriallink_options[1] &
 995                     (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
 996                 ha->fw_options[11] = (emphasis << 14) | (swing << 8);
 997                 if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
 998                         if (rx_sens == 0x0)
 999                                 rx_sens = 0x3;
1000                         ha->fw_options[11] |= (tx_sens << 4) | rx_sens;
1001                 } else if (IS_QLA2322(ha) || IS_QLA6322(ha))
1002                         ha->fw_options[11] |= BIT_5 |
1003                             ((rx_sens & (BIT_1 | BIT_0)) << 2) |
1004                             (tx_sens & (BIT_1 | BIT_0));
1005         }
1006
1007         /* FCP2 options. */
1008         /*  Return command IOCBs without waiting for an ABTS to complete. */
1009         ha->fw_options[3] |= BIT_13;
1010
1011         /* LED scheme. */
1012         if (ha->flags.enable_led_scheme)
1013                 ha->fw_options[2] |= BIT_12;
1014
1015         /* Update firmware options. */
1016         qla2x00_set_fw_options(ha, ha->fw_options);
1017 }
1018
1019 void
1020 qla24xx_update_fw_options(scsi_qla_host_t *ha)
1021 {
1022         int rval;
1023
1024         /* Update Serial Link options. */
1025         if ((ha->fw_seriallink_options24[0] & BIT_0) == 0)
1026                 return;
1027
1028         rval = qla2x00_set_serdes_params(ha, ha->fw_seriallink_options24[1],
1029             ha->fw_seriallink_options24[2], ha->fw_seriallink_options24[3]);
1030         if (rval != QLA_SUCCESS) {
1031                 qla_printk(KERN_WARNING, ha,
1032                     "Unable to update Serial Link options (%x).\n", rval);
1033         }
1034 }
1035
1036 void
1037 qla2x00_config_rings(struct scsi_qla_host *ha)
1038 {
1039         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1040
1041         /* Setup ring parameters in initialization control block. */
1042         ha->init_cb->request_q_outpointer = __constant_cpu_to_le16(0);
1043         ha->init_cb->response_q_inpointer = __constant_cpu_to_le16(0);
1044         ha->init_cb->request_q_length = cpu_to_le16(ha->request_q_length);
1045         ha->init_cb->response_q_length = cpu_to_le16(ha->response_q_length);
1046         ha->init_cb->request_q_address[0] = cpu_to_le32(LSD(ha->request_dma));
1047         ha->init_cb->request_q_address[1] = cpu_to_le32(MSD(ha->request_dma));
1048         ha->init_cb->response_q_address[0] = cpu_to_le32(LSD(ha->response_dma));
1049         ha->init_cb->response_q_address[1] = cpu_to_le32(MSD(ha->response_dma));
1050
1051         WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), 0);
1052         WRT_REG_WORD(ISP_REQ_Q_OUT(ha, reg), 0);
1053         WRT_REG_WORD(ISP_RSP_Q_IN(ha, reg), 0);
1054         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), 0);
1055         RD_REG_WORD(ISP_RSP_Q_OUT(ha, reg));            /* PCI Posting. */
1056 }
1057
1058 void
1059 qla24xx_config_rings(struct scsi_qla_host *ha)
1060 {
1061         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1062         struct init_cb_24xx *icb;
1063
1064         /* Setup ring parameters in initialization control block. */
1065         icb = (struct init_cb_24xx *)ha->init_cb;
1066         icb->request_q_outpointer = __constant_cpu_to_le16(0);
1067         icb->response_q_inpointer = __constant_cpu_to_le16(0);
1068         icb->request_q_length = cpu_to_le16(ha->request_q_length);
1069         icb->response_q_length = cpu_to_le16(ha->response_q_length);
1070         icb->request_q_address[0] = cpu_to_le32(LSD(ha->request_dma));
1071         icb->request_q_address[1] = cpu_to_le32(MSD(ha->request_dma));
1072         icb->response_q_address[0] = cpu_to_le32(LSD(ha->response_dma));
1073         icb->response_q_address[1] = cpu_to_le32(MSD(ha->response_dma));
1074
1075         WRT_REG_DWORD(&reg->req_q_in, 0);
1076         WRT_REG_DWORD(&reg->req_q_out, 0);
1077         WRT_REG_DWORD(&reg->rsp_q_in, 0);
1078         WRT_REG_DWORD(&reg->rsp_q_out, 0);
1079         RD_REG_DWORD(&reg->rsp_q_out);
1080 }
1081
1082 /**
1083  * qla2x00_init_rings() - Initializes firmware.
1084  * @ha: HA context
1085  *
1086  * Beginning of request ring has initialization control block already built
1087  * by nvram config routine.
1088  *
1089  * Returns 0 on success.
1090  */
1091 static int
1092 qla2x00_init_rings(scsi_qla_host_t *ha)
1093 {
1094         int     rval;
1095         unsigned long flags = 0;
1096         int cnt;
1097
1098         spin_lock_irqsave(&ha->hardware_lock, flags);
1099
1100         /* Clear outstanding commands array. */
1101         for (cnt = 0; cnt < MAX_OUTSTANDING_COMMANDS; cnt++)
1102                 ha->outstanding_cmds[cnt] = NULL;
1103
1104         ha->current_outstanding_cmd = 0;
1105
1106         /* Clear RSCN queue. */
1107         ha->rscn_in_ptr = 0;
1108         ha->rscn_out_ptr = 0;
1109
1110         /* Initialize firmware. */
1111         ha->request_ring_ptr  = ha->request_ring;
1112         ha->req_ring_index    = 0;
1113         ha->req_q_cnt         = ha->request_q_length;
1114         ha->response_ring_ptr = ha->response_ring;
1115         ha->rsp_ring_index    = 0;
1116
1117         /* Initialize response queue entries */
1118         qla2x00_init_response_q_entries(ha);
1119
1120         ha->isp_ops.config_rings(ha);
1121
1122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1123
1124         /* Update any ISP specific firmware options before initialization. */
1125         ha->isp_ops.update_fw_options(ha);
1126
1127         DEBUG(printk("scsi(%ld): Issue init firmware.\n", ha->host_no));
1128         rval = qla2x00_init_firmware(ha, ha->init_cb_size);
1129         if (rval) {
1130                 DEBUG2_3(printk("scsi(%ld): Init firmware **** FAILED ****.\n",
1131                     ha->host_no));
1132         } else {
1133                 DEBUG3(printk("scsi(%ld): Init firmware -- success.\n",
1134                     ha->host_no));
1135         }
1136
1137         return (rval);
1138 }
1139
1140 /**
1141  * qla2x00_fw_ready() - Waits for firmware ready.
1142  * @ha: HA context
1143  *
1144  * Returns 0 on success.
1145  */
1146 static int
1147 qla2x00_fw_ready(scsi_qla_host_t *ha)
1148 {
1149         int             rval;
1150         unsigned long   wtime, mtime;
1151         uint16_t        min_wait;       /* Minimum wait time if loop is down */
1152         uint16_t        wait_time;      /* Wait time if loop is coming ready */
1153         uint16_t        fw_state;
1154
1155         rval = QLA_SUCCESS;
1156
1157         /* 20 seconds for loop down. */
1158         min_wait = 20;
1159
1160         /*
1161          * Firmware should take at most one RATOV to login, plus 5 seconds for
1162          * our own processing.
1163          */
1164         if ((wait_time = (ha->retry_count*ha->login_timeout) + 5) < min_wait) {
1165                 wait_time = min_wait;
1166         }
1167
1168         /* Min wait time if loop down */
1169         mtime = jiffies + (min_wait * HZ);
1170
1171         /* wait time before firmware ready */
1172         wtime = jiffies + (wait_time * HZ);
1173
1174         /* Wait for ISP to finish LIP */
1175         if (!ha->flags.init_done)
1176                 qla_printk(KERN_INFO, ha, "Waiting for LIP to complete...\n");
1177
1178         DEBUG3(printk("scsi(%ld): Waiting for LIP to complete...\n",
1179             ha->host_no));
1180
1181         do {
1182                 rval = qla2x00_get_firmware_state(ha, &fw_state);
1183                 if (rval == QLA_SUCCESS) {
1184                         if (fw_state < FSTATE_LOSS_OF_SYNC) {
1185                                 ha->device_flags &= ~DFLG_NO_CABLE;
1186                         }
1187                         if (fw_state == FSTATE_READY) {
1188                                 DEBUG(printk("scsi(%ld): F/W Ready - OK \n",
1189                                     ha->host_no));
1190
1191                                 qla2x00_get_retry_cnt(ha, &ha->retry_count,
1192                                     &ha->login_timeout, &ha->r_a_tov);
1193
1194                                 rval = QLA_SUCCESS;
1195                                 break;
1196                         }
1197
1198                         rval = QLA_FUNCTION_FAILED;
1199
1200                         if (atomic_read(&ha->loop_down_timer) &&
1201                             (fw_state >= FSTATE_LOSS_OF_SYNC ||
1202                                 fw_state == FSTATE_WAIT_AL_PA)) {
1203                                 /* Loop down. Timeout on min_wait for states
1204                                  * other than Wait for Login.
1205                                  */
1206                                 if (time_after_eq(jiffies, mtime)) {
1207                                         qla_printk(KERN_INFO, ha,
1208                                             "Cable is unplugged...\n");
1209
1210                                         ha->device_flags |= DFLG_NO_CABLE;
1211                                         break;
1212                                 }
1213                         }
1214                 } else {
1215                         /* Mailbox cmd failed. Timeout on min_wait. */
1216                         if (time_after_eq(jiffies, mtime))
1217                                 break;
1218                 }
1219
1220                 if (time_after_eq(jiffies, wtime))
1221                         break;
1222
1223                 /* Delay for a while */
1224                 msleep(500);
1225
1226                 DEBUG3(printk("scsi(%ld): fw_state=%x curr time=%lx.\n",
1227                     ha->host_no, fw_state, jiffies));
1228         } while (1);
1229
1230         DEBUG(printk("scsi(%ld): fw_state=%x curr time=%lx.\n",
1231             ha->host_no, fw_state, jiffies));
1232
1233         if (rval) {
1234                 DEBUG2_3(printk("scsi(%ld): Firmware ready **** FAILED ****.\n",
1235                     ha->host_no));
1236         }
1237
1238         return (rval);
1239 }
1240
1241 /*
1242 *  qla2x00_configure_hba
1243 *      Setup adapter context.
1244 *
1245 * Input:
1246 *      ha = adapter state pointer.
1247 *
1248 * Returns:
1249 *      0 = success
1250 *
1251 * Context:
1252 *      Kernel context.
1253 */
1254 static int
1255 qla2x00_configure_hba(scsi_qla_host_t *ha)
1256 {
1257         int       rval;
1258         uint16_t      loop_id;
1259         uint16_t      topo;
1260         uint8_t       al_pa;
1261         uint8_t       area;
1262         uint8_t       domain;
1263         char            connect_type[22];
1264
1265         /* Get host addresses. */
1266         rval = qla2x00_get_adapter_id(ha,
1267             &loop_id, &al_pa, &area, &domain, &topo);
1268         if (rval != QLA_SUCCESS) {
1269                 qla_printk(KERN_WARNING, ha,
1270                     "ERROR -- Unable to get host loop ID.\n");
1271                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1272                 return (rval);
1273         }
1274
1275         if (topo == 4) {
1276                 qla_printk(KERN_INFO, ha,
1277                         "Cannot get topology - retrying.\n");
1278                 return (QLA_FUNCTION_FAILED);
1279         }
1280
1281         ha->loop_id = loop_id;
1282
1283         /* initialize */
1284         ha->min_external_loopid = SNS_FIRST_LOOP_ID;
1285         ha->operating_mode = LOOP;
1286
1287         switch (topo) {
1288         case 0:
1289                 DEBUG3(printk("scsi(%ld): HBA in NL topology.\n",
1290                     ha->host_no));
1291                 ha->current_topology = ISP_CFG_NL;
1292                 strcpy(connect_type, "(Loop)");
1293                 break;
1294
1295         case 1:
1296                 DEBUG3(printk("scsi(%ld): HBA in FL topology.\n",
1297                     ha->host_no));
1298                 ha->current_topology = ISP_CFG_FL;
1299                 strcpy(connect_type, "(FL_Port)");
1300                 break;
1301
1302         case 2:
1303                 DEBUG3(printk("scsi(%ld): HBA in N P2P topology.\n",
1304                     ha->host_no));
1305                 ha->operating_mode = P2P;
1306                 ha->current_topology = ISP_CFG_N;
1307                 strcpy(connect_type, "(N_Port-to-N_Port)");
1308                 break;
1309
1310         case 3:
1311                 DEBUG3(printk("scsi(%ld): HBA in F P2P topology.\n",
1312                     ha->host_no));
1313                 ha->operating_mode = P2P;
1314                 ha->current_topology = ISP_CFG_F;
1315                 strcpy(connect_type, "(F_Port)");
1316                 break;
1317
1318         default:
1319                 DEBUG3(printk("scsi(%ld): HBA in unknown topology %x. "
1320                     "Using NL.\n",
1321                     ha->host_no, topo));
1322                 ha->current_topology = ISP_CFG_NL;
1323                 strcpy(connect_type, "(Loop)");
1324                 break;
1325         }
1326
1327         /* Save Host port and loop ID. */
1328         /* byte order - Big Endian */
1329         ha->d_id.b.domain = domain;
1330         ha->d_id.b.area = area;
1331         ha->d_id.b.al_pa = al_pa;
1332
1333         if (!ha->flags.init_done)
1334                 qla_printk(KERN_INFO, ha,
1335                     "Topology - %s, Host Loop address 0x%x\n",
1336                     connect_type, ha->loop_id);
1337
1338         if (rval) {
1339                 DEBUG2_3(printk("scsi(%ld): FAILED.\n", ha->host_no));
1340         } else {
1341                 DEBUG3(printk("scsi(%ld): exiting normally.\n", ha->host_no));
1342         }
1343
1344         return(rval);
1345 }
1346
1347 /*
1348 * NVRAM configuration for ISP 2xxx
1349 *
1350 * Input:
1351 *      ha                = adapter block pointer.
1352 *
1353 * Output:
1354 *      initialization control block in response_ring
1355 *      host adapters parameters in host adapter block
1356 *
1357 * Returns:
1358 *      0 = success.
1359 */
1360 int
1361 qla2x00_nvram_config(scsi_qla_host_t *ha)
1362 {
1363         int             rval;
1364         uint8_t         chksum = 0;
1365         uint16_t        cnt;
1366         uint8_t         *dptr1, *dptr2;
1367         init_cb_t       *icb = ha->init_cb;
1368         nvram_t         *nv = (nvram_t *)ha->request_ring;
1369         uint8_t         *ptr = (uint8_t *)ha->request_ring;
1370         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1371         uint8_t         timer_mode;
1372
1373         rval = QLA_SUCCESS;
1374
1375         /* Determine NVRAM starting address. */
1376         ha->nvram_size = sizeof(nvram_t);
1377         ha->nvram_base = 0;
1378         if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha))
1379                 if ((RD_REG_WORD(&reg->ctrl_status) >> 14) == 1)
1380                         ha->nvram_base = 0x80;
1381
1382         /* Get NVRAM data and calculate checksum. */
1383         ha->isp_ops.read_nvram(ha, ptr, ha->nvram_base, ha->nvram_size);
1384         for (cnt = 0, chksum = 0; cnt < ha->nvram_size; cnt++)
1385                 chksum += *ptr++;
1386
1387         DEBUG5(printk("scsi(%ld): Contents of NVRAM\n", ha->host_no));
1388         DEBUG5(qla2x00_dump_buffer((uint8_t *)ha->request_ring,
1389             ha->nvram_size));
1390
1391         /* Bad NVRAM data, set defaults parameters. */
1392         if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' ||
1393             nv->id[2] != 'P' || nv->id[3] != ' ' || nv->nvram_version < 1) {
1394                 /* Reset NVRAM data. */
1395                 qla_printk(KERN_WARNING, ha, "Inconsistent NVRAM detected: "
1396                     "checksum=0x%x id=%c version=0x%x.\n", chksum, nv->id[0],
1397                     nv->nvram_version);
1398                 qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
1399                     "invalid -- WWPN) defaults.\n");
1400
1401                 /*
1402                  * Set default initialization control block.
1403                  */
1404                 memset(nv, 0, ha->nvram_size);
1405                 nv->parameter_block_version = ICB_VERSION;
1406
1407                 if (IS_QLA23XX(ha)) {
1408                         nv->firmware_options[0] = BIT_2 | BIT_1;
1409                         nv->firmware_options[1] = BIT_7 | BIT_5;
1410                         nv->add_firmware_options[0] = BIT_5;
1411                         nv->add_firmware_options[1] = BIT_5 | BIT_4;
1412                         nv->frame_payload_size = __constant_cpu_to_le16(2048);
1413                         nv->special_options[1] = BIT_7;
1414                 } else if (IS_QLA2200(ha)) {
1415                         nv->firmware_options[0] = BIT_2 | BIT_1;
1416                         nv->firmware_options[1] = BIT_7 | BIT_5;
1417                         nv->add_firmware_options[0] = BIT_5;
1418                         nv->add_firmware_options[1] = BIT_5 | BIT_4;
1419                         nv->frame_payload_size = __constant_cpu_to_le16(1024);
1420                 } else if (IS_QLA2100(ha)) {
1421                         nv->firmware_options[0] = BIT_3 | BIT_1;
1422                         nv->firmware_options[1] = BIT_5;
1423                         nv->frame_payload_size = __constant_cpu_to_le16(1024);
1424                 }
1425
1426                 nv->max_iocb_allocation = __constant_cpu_to_le16(256);
1427                 nv->execution_throttle = __constant_cpu_to_le16(16);
1428                 nv->retry_count = 8;
1429                 nv->retry_delay = 1;
1430
1431                 nv->port_name[0] = 33;
1432                 nv->port_name[3] = 224;
1433                 nv->port_name[4] = 139;
1434
1435                 nv->login_timeout = 4;
1436
1437                 /*
1438                  * Set default host adapter parameters
1439                  */
1440                 nv->host_p[1] = BIT_2;
1441                 nv->reset_delay = 5;
1442                 nv->port_down_retry_count = 8;
1443                 nv->max_luns_per_target = __constant_cpu_to_le16(8);
1444                 nv->link_down_timeout = 60;
1445
1446                 rval = 1;
1447         }
1448
1449 #if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
1450         /*
1451          * The SN2 does not provide BIOS emulation which means you can't change
1452          * potentially bogus BIOS settings. Force the use of default settings
1453          * for link rate and frame size.  Hope that the rest of the settings
1454          * are valid.
1455          */
1456         if (ia64_platform_is("sn2")) {
1457                 nv->frame_payload_size = __constant_cpu_to_le16(2048);
1458                 if (IS_QLA23XX(ha))
1459                         nv->special_options[1] = BIT_7;
1460         }
1461 #endif
1462
1463         /* Reset Initialization control block */
1464         memset(icb, 0, ha->init_cb_size);
1465
1466         /*
1467          * Setup driver NVRAM options.
1468          */
1469         nv->firmware_options[0] |= (BIT_6 | BIT_1);
1470         nv->firmware_options[0] &= ~(BIT_5 | BIT_4);
1471         nv->firmware_options[1] |= (BIT_5 | BIT_0);
1472         nv->firmware_options[1] &= ~BIT_4;
1473
1474         if (IS_QLA23XX(ha)) {
1475                 nv->firmware_options[0] |= BIT_2;
1476                 nv->firmware_options[0] &= ~BIT_3;
1477                 nv->add_firmware_options[1] |= BIT_5 | BIT_4;
1478
1479                 if (IS_QLA2300(ha)) {
1480                         if (ha->fb_rev == FPM_2310) {
1481                                 strcpy(ha->model_number, "QLA2310");
1482                         } else {
1483                                 strcpy(ha->model_number, "QLA2300");
1484                         }
1485                 } else {
1486                         if (rval == 0 &&
1487                             memcmp(nv->model_number, BINZERO,
1488                                     sizeof(nv->model_number)) != 0) {
1489                                 char *st, *en;
1490
1491                                 strncpy(ha->model_number, nv->model_number,
1492                                     sizeof(nv->model_number));
1493                                 st = en = ha->model_number;
1494                                 en += sizeof(nv->model_number) - 1;
1495                                 while (en > st) {
1496                                         if (*en != 0x20 && *en != 0x00)
1497                                                 break;
1498                                         *en-- = '\0';
1499                                 }
1500                         } else {
1501                                 uint16_t        index;
1502
1503                                 index = (ha->pdev->subsystem_device & 0xff);
1504                                 if (index < QLA_MODEL_NAMES) {
1505                                         strcpy(ha->model_number,
1506                                             qla2x00_model_name[index]);
1507                                         ha->model_desc =
1508                                             qla2x00_model_desc[index];
1509                                 } else {
1510                                         strcpy(ha->model_number, "QLA23xx");
1511                                 }
1512                         }
1513                 }
1514         } else if (IS_QLA2200(ha)) {
1515                 nv->firmware_options[0] |= BIT_2;
1516                 /*
1517                  * 'Point-to-point preferred, else loop' is not a safe
1518                  * connection mode setting.
1519                  */
1520                 if ((nv->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) ==
1521                     (BIT_5 | BIT_4)) {
1522                         /* Force 'loop preferred, else point-to-point'. */
1523                         nv->add_firmware_options[0] &= ~(BIT_6 | BIT_5 | BIT_4);
1524                         nv->add_firmware_options[0] |= BIT_5;
1525                 }
1526                 strcpy(ha->model_number, "QLA22xx");
1527         } else /*if (IS_QLA2100(ha))*/ {
1528                 strcpy(ha->model_number, "QLA2100");
1529         }
1530
1531         /*
1532          * Copy over NVRAM RISC parameter block to initialization control block.
1533          */
1534         dptr1 = (uint8_t *)icb;
1535         dptr2 = (uint8_t *)&nv->parameter_block_version;
1536         cnt = (uint8_t *)&icb->request_q_outpointer - (uint8_t *)&icb->version;
1537         while (cnt--)
1538                 *dptr1++ = *dptr2++;
1539
1540         /* Copy 2nd half. */
1541         dptr1 = (uint8_t *)icb->add_firmware_options;
1542         cnt = (uint8_t *)icb->reserved_3 - (uint8_t *)icb->add_firmware_options;
1543         while (cnt--)
1544                 *dptr1++ = *dptr2++;
1545
1546         /* Prepare nodename */
1547         if ((icb->firmware_options[1] & BIT_6) == 0) {
1548                 /*
1549                  * Firmware will apply the following mask if the nodename was
1550                  * not provided.
1551                  */
1552                 memcpy(icb->node_name, icb->port_name, WWN_SIZE);
1553                 icb->node_name[0] &= 0xF0;
1554         }
1555
1556         /*
1557          * Set host adapter parameters.
1558          */
1559         ha->flags.disable_risc_code_load = ((nv->host_p[0] & BIT_4) ? 1 : 0);
1560         /* Always load RISC code on non ISP2[12]00 chips. */
1561         if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1562                 ha->flags.disable_risc_code_load = 0;
1563         ha->flags.enable_lip_reset = ((nv->host_p[1] & BIT_1) ? 1 : 0);
1564         ha->flags.enable_lip_full_login = ((nv->host_p[1] & BIT_2) ? 1 : 0);
1565         ha->flags.enable_target_reset = ((nv->host_p[1] & BIT_3) ? 1 : 0);
1566         ha->flags.enable_led_scheme = ((nv->efi_parameters & BIT_3) ? 1 : 0);
1567
1568         ha->operating_mode =
1569             (icb->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) >> 4;
1570
1571         memcpy(ha->fw_seriallink_options, nv->seriallink_options,
1572             sizeof(ha->fw_seriallink_options));
1573
1574         /* save HBA serial number */
1575         ha->serial0 = icb->port_name[5];
1576         ha->serial1 = icb->port_name[6];
1577         ha->serial2 = icb->port_name[7];
1578         ha->node_name = icb->node_name;
1579         ha->port_name = icb->port_name;
1580
1581         icb->execution_throttle = __constant_cpu_to_le16(0xFFFF);
1582
1583         ha->retry_count = nv->retry_count;
1584
1585         /* Set minimum login_timeout to 4 seconds. */
1586         if (nv->login_timeout < ql2xlogintimeout)
1587                 nv->login_timeout = ql2xlogintimeout;
1588         if (nv->login_timeout < 4)
1589                 nv->login_timeout = 4;
1590         ha->login_timeout = nv->login_timeout;
1591         icb->login_timeout = nv->login_timeout;
1592
1593         /* Set minimum RATOV to 200 tenths of a second. */
1594         ha->r_a_tov = 200;
1595
1596         ha->loop_reset_delay = nv->reset_delay;
1597
1598         /* Link Down Timeout = 0:
1599          *
1600          *      When Port Down timer expires we will start returning
1601          *      I/O's to OS with "DID_NO_CONNECT".
1602          *
1603          * Link Down Timeout != 0:
1604          *
1605          *       The driver waits for the link to come up after link down
1606          *       before returning I/Os to OS with "DID_NO_CONNECT".
1607          */
1608         if (nv->link_down_timeout == 0) {
1609                 ha->loop_down_abort_time =
1610                     (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
1611         } else {
1612                 ha->link_down_timeout =  nv->link_down_timeout;
1613                 ha->loop_down_abort_time =
1614                     (LOOP_DOWN_TIME - ha->link_down_timeout);
1615         }
1616
1617         /*
1618          * Need enough time to try and get the port back.
1619          */
1620         ha->port_down_retry_count = nv->port_down_retry_count;
1621         if (qlport_down_retry)
1622                 ha->port_down_retry_count = qlport_down_retry;
1623         /* Set login_retry_count */
1624         ha->login_retry_count  = nv->retry_count;
1625         if (ha->port_down_retry_count == nv->port_down_retry_count &&
1626             ha->port_down_retry_count > 3)
1627                 ha->login_retry_count = ha->port_down_retry_count;
1628         else if (ha->port_down_retry_count > (int)ha->login_retry_count)
1629                 ha->login_retry_count = ha->port_down_retry_count;
1630         if (ql2xloginretrycount)
1631                 ha->login_retry_count = ql2xloginretrycount;
1632
1633         icb->lun_enables = __constant_cpu_to_le16(0);
1634         icb->command_resource_count = 0;
1635         icb->immediate_notify_resource_count = 0;
1636         icb->timeout = __constant_cpu_to_le16(0);
1637
1638         if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1639                 /* Enable RIO */
1640                 icb->firmware_options[0] &= ~BIT_3;
1641                 icb->add_firmware_options[0] &=
1642                     ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
1643                 icb->add_firmware_options[0] |= BIT_2;
1644                 icb->response_accumulation_timer = 3;
1645                 icb->interrupt_delay_timer = 5;
1646
1647                 ha->flags.process_response_queue = 1;
1648         } else {
1649                 /* Enable ZIO -- Support mode 5 only. */
1650                 timer_mode = icb->add_firmware_options[0] &
1651                     (BIT_3 | BIT_2 | BIT_1 | BIT_0);
1652                 icb->add_firmware_options[0] &=
1653                     ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
1654                 if (ql2xenablezio)
1655                         timer_mode = BIT_2 | BIT_0;
1656                 if (timer_mode == (BIT_2 | BIT_0)) {
1657                         DEBUG2(printk("scsi(%ld): ZIO enabled; timer delay "
1658                             "(%d).\n", ha->host_no, ql2xintrdelaytimer));
1659                         qla_printk(KERN_INFO, ha,
1660                             "ZIO enabled; timer delay (%d).\n",
1661                             ql2xintrdelaytimer);
1662
1663                         icb->add_firmware_options[0] |= timer_mode;
1664                         icb->interrupt_delay_timer = ql2xintrdelaytimer;
1665                         ha->flags.process_response_queue = 1;
1666                 }
1667         }
1668
1669         if (rval) {
1670                 DEBUG2_3(printk(KERN_WARNING
1671                     "scsi(%ld): NVRAM configuration failed!\n", ha->host_no));
1672         }
1673         return (rval);
1674 }
1675
1676 /**
1677  * qla2x00_alloc_fcport() - Allocate a generic fcport.
1678  * @ha: HA context
1679  * @flags: allocation flags
1680  *
1681  * Returns a pointer to the allocated fcport, or NULL, if none available.
1682  */
1683 fc_port_t *
1684 qla2x00_alloc_fcport(scsi_qla_host_t *ha, int flags)
1685 {
1686         fc_port_t *fcport;
1687
1688         fcport = kmalloc(sizeof(fc_port_t), flags);
1689         if (fcport == NULL)
1690                 return (fcport);
1691
1692         /* Setup fcport template structure. */
1693         memset(fcport, 0, sizeof (fc_port_t));
1694         fcport->ha = ha;
1695         fcport->port_type = FCT_UNKNOWN;
1696         fcport->loop_id = FC_NO_LOOP_ID;
1697         fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
1698         atomic_set(&fcport->state, FCS_UNCONFIGURED);
1699         fcport->flags = FCF_RLC_SUPPORT;
1700
1701         return (fcport);
1702 }
1703
1704 /*
1705  * qla2x00_configure_loop
1706  *      Updates Fibre Channel Device Database with what is actually on loop.
1707  *
1708  * Input:
1709  *      ha                = adapter block pointer.
1710  *
1711  * Returns:
1712  *      0 = success.
1713  *      1 = error.
1714  *      2 = database was full and device was not configured.
1715  */
1716 static int
1717 qla2x00_configure_loop(scsi_qla_host_t *ha)
1718 {
1719         int  rval;
1720         unsigned long flags, save_flags;
1721
1722         rval = QLA_SUCCESS;
1723
1724         /* Get Initiator ID */
1725         if (test_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags)) {
1726                 rval = qla2x00_configure_hba(ha);
1727                 if (rval != QLA_SUCCESS) {
1728                         DEBUG(printk("scsi(%ld): Unable to configure HBA.\n",
1729                             ha->host_no));
1730                         return (rval);
1731                 }
1732         }
1733
1734         save_flags = flags = ha->dpc_flags;
1735         DEBUG(printk("scsi(%ld): Configure loop -- dpc flags =0x%lx\n",
1736             ha->host_no, flags));
1737
1738         /*
1739          * If we have both an RSCN and PORT UPDATE pending then handle them
1740          * both at the same time.
1741          */
1742         clear_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1743         clear_bit(RSCN_UPDATE, &ha->dpc_flags);
1744
1745         /* Determine what we need to do */
1746         if (ha->current_topology == ISP_CFG_FL &&
1747             (test_bit(LOCAL_LOOP_UPDATE, &flags))) {
1748
1749                 ha->flags.rscn_queue_overflow = 1;
1750                 set_bit(RSCN_UPDATE, &flags);
1751
1752         } else if (ha->current_topology == ISP_CFG_F &&
1753             (test_bit(LOCAL_LOOP_UPDATE, &flags))) {
1754
1755                 ha->flags.rscn_queue_overflow = 1;
1756                 set_bit(RSCN_UPDATE, &flags);
1757                 clear_bit(LOCAL_LOOP_UPDATE, &flags);
1758
1759         } else if (!ha->flags.online ||
1760             (test_bit(ABORT_ISP_ACTIVE, &flags))) {
1761
1762                 ha->flags.rscn_queue_overflow = 1;
1763                 set_bit(RSCN_UPDATE, &flags);
1764                 set_bit(LOCAL_LOOP_UPDATE, &flags);
1765         }
1766
1767         if (test_bit(LOCAL_LOOP_UPDATE, &flags)) {
1768                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1769                         rval = QLA_FUNCTION_FAILED;
1770                 } else {
1771                         rval = qla2x00_configure_local_loop(ha);
1772                 }
1773         }
1774
1775         if (rval == QLA_SUCCESS && test_bit(RSCN_UPDATE, &flags)) {
1776                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1777                         rval = QLA_FUNCTION_FAILED;
1778                 } else {
1779                         rval = qla2x00_configure_fabric(ha);
1780                 }
1781         }
1782
1783         if (rval == QLA_SUCCESS) {
1784                 if (atomic_read(&ha->loop_down_timer) ||
1785                     test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1786                         rval = QLA_FUNCTION_FAILED;
1787                 } else {
1788                         atomic_set(&ha->loop_state, LOOP_READY);
1789
1790                         DEBUG(printk("scsi(%ld): LOOP READY\n", ha->host_no));
1791                 }
1792         }
1793
1794         if (rval) {
1795                 DEBUG2_3(printk("%s(%ld): *** FAILED ***\n",
1796                     __func__, ha->host_no));
1797         } else {
1798                 DEBUG3(printk("%s: exiting normally\n", __func__));
1799         }
1800
1801         /* Restore state if a resync event occured during processing */
1802         if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
1803                 if (test_bit(LOCAL_LOOP_UPDATE, &save_flags))
1804                         set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1805                 if (test_bit(RSCN_UPDATE, &save_flags))
1806                         set_bit(RSCN_UPDATE, &ha->dpc_flags);
1807         }
1808
1809         return (rval);
1810 }
1811
1812
1813
1814 /*
1815  * qla2x00_configure_local_loop
1816  *      Updates Fibre Channel Device Database with local loop devices.
1817  *
1818  * Input:
1819  *      ha = adapter block pointer.
1820  *
1821  * Returns:
1822  *      0 = success.
1823  */
1824 static int
1825 qla2x00_configure_local_loop(scsi_qla_host_t *ha)
1826 {
1827         int             rval, rval2;
1828         int             found_devs;
1829         int             found;
1830         fc_port_t       *fcport, *new_fcport;
1831
1832         uint16_t        index;
1833         uint16_t        entries;
1834         char            *id_iter;
1835         uint16_t        loop_id;
1836         uint8_t         domain, area, al_pa;
1837
1838         found_devs = 0;
1839         new_fcport = NULL;
1840         entries = MAX_FIBRE_DEVICES;
1841
1842         DEBUG3(printk("scsi(%ld): Getting FCAL position map\n", ha->host_no));
1843         DEBUG3(qla2x00_get_fcal_position_map(ha, NULL));
1844
1845         /* Get list of logged in devices. */
1846         memset(ha->gid_list, 0, GID_LIST_SIZE);
1847         rval = qla2x00_get_id_list(ha, ha->gid_list, ha->gid_list_dma,
1848             &entries);
1849         if (rval != QLA_SUCCESS)
1850                 goto cleanup_allocation;
1851
1852         DEBUG3(printk("scsi(%ld): Entries in ID list (%d)\n",
1853             ha->host_no, entries));
1854         DEBUG3(qla2x00_dump_buffer((uint8_t *)ha->gid_list,
1855             entries * sizeof(struct gid_list_info)));
1856
1857         /* Allocate temporary fcport for any new fcports discovered. */
1858         new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
1859         if (new_fcport == NULL) {
1860                 rval = QLA_MEMORY_ALLOC_FAILED;
1861                 goto cleanup_allocation;
1862         }
1863         new_fcport->flags &= ~FCF_FABRIC_DEVICE;
1864
1865         /*
1866          * Mark local devices that were present with FCF_DEVICE_LOST for now.
1867          */
1868         list_for_each_entry(fcport, &ha->fcports, list) {
1869                 if (atomic_read(&fcport->state) == FCS_ONLINE &&
1870                     fcport->port_type != FCT_BROADCAST &&
1871                     (fcport->flags & FCF_FABRIC_DEVICE) == 0) {
1872
1873                         DEBUG(printk("scsi(%ld): Marking port lost, "
1874                             "loop_id=0x%04x\n",
1875                             ha->host_no, fcport->loop_id));
1876
1877                         atomic_set(&fcport->state, FCS_DEVICE_LOST);
1878                         fcport->flags &= ~FCF_FARP_DONE;
1879                 }
1880         }
1881
1882         /* Add devices to port list. */
1883         id_iter = (char *)ha->gid_list;
1884         for (index = 0; index < entries; index++) {
1885                 domain = ((struct gid_list_info *)id_iter)->domain;
1886                 area = ((struct gid_list_info *)id_iter)->area;
1887                 al_pa = ((struct gid_list_info *)id_iter)->al_pa;
1888                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
1889                         loop_id = (uint16_t)
1890                             ((struct gid_list_info *)id_iter)->loop_id_2100;
1891                 else
1892                         loop_id = le16_to_cpu(
1893                             ((struct gid_list_info *)id_iter)->loop_id);
1894                 id_iter += ha->gid_list_info_size;
1895
1896                 /* Bypass reserved domain fields. */
1897                 if ((domain & 0xf0) == 0xf0)
1898                         continue;
1899
1900                 /* Bypass if not same domain and area of adapter. */
1901                 if (area != ha->d_id.b.area || domain != ha->d_id.b.domain)
1902                         continue;
1903
1904                 /* Bypass invalid local loop ID. */
1905                 if (loop_id > LAST_LOCAL_LOOP_ID)
1906                         continue;
1907
1908                 /* Fill in member data. */
1909                 new_fcport->d_id.b.domain = domain;
1910                 new_fcport->d_id.b.area = area;
1911                 new_fcport->d_id.b.al_pa = al_pa;
1912                 new_fcport->loop_id = loop_id;
1913                 rval2 = qla2x00_get_port_database(ha, new_fcport, 0);
1914                 if (rval2 != QLA_SUCCESS) {
1915                         DEBUG2(printk("scsi(%ld): Failed to retrieve fcport "
1916                             "information -- get_port_database=%x, "
1917                             "loop_id=0x%04x\n",
1918                             ha->host_no, rval2, new_fcport->loop_id));
1919                         continue;
1920                 }
1921
1922                 /* Check for matching device in port list. */
1923                 found = 0;
1924                 fcport = NULL;
1925                 list_for_each_entry(fcport, &ha->fcports, list) {
1926                         if (memcmp(new_fcport->port_name, fcport->port_name,
1927                             WWN_SIZE))
1928                                 continue;
1929
1930                         fcport->flags &= ~(FCF_FABRIC_DEVICE |
1931                             FCF_PERSISTENT_BOUND);
1932                         fcport->loop_id = new_fcport->loop_id;
1933                         fcport->port_type = new_fcport->port_type;
1934                         fcport->d_id.b24 = new_fcport->d_id.b24;
1935                         memcpy(fcport->node_name, new_fcport->node_name,
1936                             WWN_SIZE);
1937
1938                         found++;
1939                         break;
1940                 }
1941
1942                 if (!found) {
1943                         /* New device, add to fcports list. */
1944                         new_fcport->flags &= ~FCF_PERSISTENT_BOUND;
1945                         list_add_tail(&new_fcport->list, &ha->fcports);
1946
1947                         /* Allocate a new replacement fcport. */
1948                         fcport = new_fcport;
1949                         new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
1950                         if (new_fcport == NULL) {
1951                                 rval = QLA_MEMORY_ALLOC_FAILED;
1952                                 goto cleanup_allocation;
1953                         }
1954                         new_fcport->flags &= ~FCF_FABRIC_DEVICE;
1955                 }
1956
1957                 qla2x00_update_fcport(ha, fcport);
1958
1959                 found_devs++;
1960         }
1961
1962 cleanup_allocation:
1963         if (new_fcport)
1964                 kfree(new_fcport);
1965
1966         if (rval != QLA_SUCCESS) {
1967                 DEBUG2(printk("scsi(%ld): Configure local loop error exit: "
1968                     "rval=%x\n", ha->host_no, rval));
1969         }
1970
1971         if (found_devs) {
1972                 ha->device_flags |= DFLG_LOCAL_DEVICES;
1973                 ha->device_flags &= ~DFLG_RETRY_LOCAL_DEVICES;
1974         }
1975
1976         return (rval);
1977 }
1978
1979 static void
1980 qla2x00_probe_for_all_luns(scsi_qla_host_t *ha)
1981 {
1982         fc_port_t       *fcport;
1983
1984         qla2x00_mark_all_devices_lost(ha);
1985         list_for_each_entry(fcport, &ha->fcports, list) {
1986                 if (fcport->port_type != FCT_TARGET)
1987                         continue;
1988
1989                 qla2x00_update_fcport(ha, fcport);
1990         }
1991 }
1992
1993 /*
1994  * qla2x00_update_fcport
1995  *      Updates device on list.
1996  *
1997  * Input:
1998  *      ha = adapter block pointer.
1999  *      fcport = port structure pointer.
2000  *
2001  * Return:
2002  *      0  - Success
2003  *  BIT_0 - error
2004  *
2005  * Context:
2006  *      Kernel context.
2007  */
2008 static void
2009 qla2x00_update_fcport(scsi_qla_host_t *ha, fc_port_t *fcport)
2010 {
2011         uint16_t        index;
2012         unsigned long flags;
2013         srb_t *sp;
2014
2015         fcport->ha = ha;
2016         fcport->login_retry = 0;
2017         fcport->port_login_retry_count = ha->port_down_retry_count *
2018             PORT_RETRY_TIME;
2019         atomic_set(&fcport->port_down_timer, ha->port_down_retry_count *
2020             PORT_RETRY_TIME);
2021         fcport->flags &= ~FCF_LOGIN_NEEDED;
2022
2023         /*
2024          * Check for outstanding cmd on tape Bypass LUN discovery if active
2025          * command on tape.
2026          */
2027         if (fcport->flags & FCF_TAPE_PRESENT) {
2028                 spin_lock_irqsave(&ha->hardware_lock, flags);
2029                 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
2030                         fc_port_t *sfcp;
2031
2032                         if ((sp = ha->outstanding_cmds[index]) != 0) {
2033                                 sfcp = sp->fcport;
2034                                 if (sfcp == fcport) {
2035                                         atomic_set(&fcport->state, FCS_ONLINE);
2036                                         spin_unlock_irqrestore(
2037                                             &ha->hardware_lock, flags);
2038                                         return;
2039                                 }
2040                         }
2041                 }
2042                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2043         }
2044
2045         if (fcport->port_type == FCT_INITIATOR ||
2046             fcport->port_type == FCT_BROADCAST)
2047                 fcport->device_type = TYPE_PROCESSOR;
2048
2049         atomic_set(&fcport->state, FCS_ONLINE);
2050
2051         if (ha->flags.init_done)
2052                 qla2x00_reg_remote_port(ha, fcport);
2053 }
2054
2055 void
2056 qla2x00_reg_remote_port(scsi_qla_host_t *ha, fc_port_t *fcport)
2057 {
2058         struct fc_rport_identifiers rport_ids;
2059         struct fc_rport *rport;
2060
2061         if (fcport->rport) {
2062                 fc_remote_port_unblock(fcport->rport);
2063                 return;
2064         }
2065
2066         rport_ids.node_name = be64_to_cpu(*(uint64_t *)fcport->node_name);
2067         rport_ids.port_name = be64_to_cpu(*(uint64_t *)fcport->port_name);
2068         rport_ids.port_id = fcport->d_id.b.domain << 16 |
2069             fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
2070         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2071         fcport->rport = rport = fc_remote_port_add(ha->host, 0, &rport_ids);
2072         if (!rport) {
2073                 qla_printk(KERN_WARNING, ha,
2074                     "Unable to allocate fc remote port!\n");
2075                 return;
2076         }
2077         rport->dd_data = fcport;
2078
2079         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
2080         if (fcport->port_type == FCT_INITIATOR)
2081                 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR;
2082         if (fcport->port_type == FCT_TARGET)
2083                 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
2084         fc_remote_port_rolechg(rport, rport_ids.roles);
2085
2086         if (rport->scsi_target_id != -1 &&
2087             rport->scsi_target_id < ha->host->max_id)
2088                 fcport->os_target_id = rport->scsi_target_id;
2089 }
2090
2091 /*
2092  * qla2x00_configure_fabric
2093  *      Setup SNS devices with loop ID's.
2094  *
2095  * Input:
2096  *      ha = adapter block pointer.
2097  *
2098  * Returns:
2099  *      0 = success.
2100  *      BIT_0 = error
2101  */
2102 static int
2103 qla2x00_configure_fabric(scsi_qla_host_t *ha)
2104 {
2105         int     rval, rval2;
2106         fc_port_t       *fcport, *fcptemp;
2107         uint16_t        next_loopid;
2108         uint16_t        mb[MAILBOX_REGISTER_COUNT];
2109         uint16_t        loop_id;
2110         LIST_HEAD(new_fcports);
2111
2112         /* If FL port exists, then SNS is present */
2113         if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
2114                 loop_id = NPH_F_PORT;
2115         else
2116                 loop_id = SNS_FL_PORT;
2117         rval = qla2x00_get_port_name(ha, loop_id, NULL, 0);
2118         if (rval != QLA_SUCCESS) {
2119                 DEBUG2(printk("scsi(%ld): MBC_GET_PORT_NAME Failed, No FL "
2120                     "Port\n", ha->host_no));
2121
2122                 ha->device_flags &= ~SWITCH_FOUND;
2123                 return (QLA_SUCCESS);
2124         }
2125
2126         /* Mark devices that need re-synchronization. */
2127         rval2 = qla2x00_device_resync(ha);
2128         if (rval2 == QLA_RSCNS_HANDLED) {
2129                 /* No point doing the scan, just continue. */
2130                 return (QLA_SUCCESS);
2131         }
2132         do {
2133                 /* Ensure we are logged into the SNS. */
2134                 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
2135                         loop_id = NPH_SNS;
2136                 else
2137                         loop_id = SIMPLE_NAME_SERVER;
2138                 ha->isp_ops.fabric_login(ha, loop_id, 0xff, 0xff,
2139                     0xfc, mb, BIT_1 | BIT_0);
2140                 if (mb[0] != MBS_COMMAND_COMPLETE) {
2141                         DEBUG2(qla_printk(KERN_INFO, ha,
2142                             "Failed SNS login: loop_id=%x mb[0]=%x mb[1]=%x "
2143                             "mb[2]=%x mb[6]=%x mb[7]=%x\n", loop_id,
2144                             mb[0], mb[1], mb[2], mb[6], mb[7]));
2145                         return (QLA_SUCCESS);
2146                 }
2147
2148                 if (test_and_clear_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags)) {
2149                         if (qla2x00_rft_id(ha)) {
2150                                 /* EMPTY */
2151                                 DEBUG2(printk("scsi(%ld): Register FC-4 "
2152                                     "TYPE failed.\n", ha->host_no));
2153                         }
2154                         if (qla2x00_rff_id(ha)) {
2155                                 /* EMPTY */
2156                                 DEBUG2(printk("scsi(%ld): Register FC-4 "
2157                                     "Features failed.\n", ha->host_no));
2158                         }
2159                         if (qla2x00_rnn_id(ha)) {
2160                                 /* EMPTY */
2161                                 DEBUG2(printk("scsi(%ld): Register Node Name "
2162                                     "failed.\n", ha->host_no));
2163                         } else if (qla2x00_rsnn_nn(ha)) {
2164                                 /* EMPTY */
2165                                 DEBUG2(printk("scsi(%ld): Register Symbolic "
2166                                     "Node Name failed.\n", ha->host_no));
2167                         }
2168                 }
2169
2170                 rval = qla2x00_find_all_fabric_devs(ha, &new_fcports);
2171                 if (rval != QLA_SUCCESS)
2172                         break;
2173
2174                 /*
2175                  * Logout all previous fabric devices marked lost, except
2176                  * tape devices.
2177                  */
2178                 list_for_each_entry(fcport, &ha->fcports, list) {
2179                         if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2180                                 break;
2181
2182                         if ((fcport->flags & FCF_FABRIC_DEVICE) == 0)
2183                                 continue;
2184
2185                         if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2186                                 qla2x00_mark_device_lost(ha, fcport,
2187                                     ql2xplogiabsentdevice);
2188                                 if (fcport->loop_id != FC_NO_LOOP_ID &&
2189                                     (fcport->flags & FCF_TAPE_PRESENT) == 0 &&
2190                                     fcport->port_type != FCT_INITIATOR &&
2191                                     fcport->port_type != FCT_BROADCAST) {
2192
2193                                         ha->isp_ops.fabric_logout(ha,
2194                                             fcport->loop_id,
2195                                             fcport->d_id.b.domain,
2196                                             fcport->d_id.b.area,
2197                                             fcport->d_id.b.al_pa);
2198                                         fcport->loop_id = FC_NO_LOOP_ID;
2199                                 }
2200                         }
2201                 }
2202
2203                 /* Starting free loop ID. */
2204                 next_loopid = ha->min_external_loopid;
2205
2206                 /*
2207                  * Scan through our port list and login entries that need to be
2208                  * logged in.
2209                  */
2210                 list_for_each_entry(fcport, &ha->fcports, list) {
2211                         if (atomic_read(&ha->loop_down_timer) ||
2212                             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2213                                 break;
2214
2215                         if ((fcport->flags & FCF_FABRIC_DEVICE) == 0 ||
2216                             (fcport->flags & FCF_LOGIN_NEEDED) == 0)
2217                                 continue;
2218
2219                         if (fcport->loop_id == FC_NO_LOOP_ID) {
2220                                 fcport->loop_id = next_loopid;
2221                                 rval = qla2x00_find_new_loop_id(ha, fcport);
2222                                 if (rval != QLA_SUCCESS) {
2223                                         /* Ran out of IDs to use */
2224                                         break;
2225                                 }
2226                         }
2227                         /* Login and update database */
2228                         qla2x00_fabric_dev_login(ha, fcport, &next_loopid);
2229                 }
2230
2231                 /* Exit if out of loop IDs. */
2232                 if (rval != QLA_SUCCESS) {
2233                         break;
2234                 }
2235
2236                 /*
2237                  * Login and add the new devices to our port list.
2238                  */
2239                 list_for_each_entry_safe(fcport, fcptemp, &new_fcports, list) {
2240                         if (atomic_read(&ha->loop_down_timer) ||
2241                             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2242                                 break;
2243
2244                         /* Find a new loop ID to use. */
2245                         fcport->loop_id = next_loopid;
2246                         rval = qla2x00_find_new_loop_id(ha, fcport);
2247                         if (rval != QLA_SUCCESS) {
2248                                 /* Ran out of IDs to use */
2249                                 break;
2250                         }
2251
2252                         /* Remove device from the new list and add it to DB */
2253                         list_del(&fcport->list);
2254                         list_add_tail(&fcport->list, &ha->fcports);
2255
2256                         /* Login and update database */
2257                         qla2x00_fabric_dev_login(ha, fcport, &next_loopid);
2258                 }
2259         } while (0);
2260
2261         /* Free all new device structures not processed. */
2262         list_for_each_entry_safe(fcport, fcptemp, &new_fcports, list) {
2263                 list_del(&fcport->list);
2264                 kfree(fcport);
2265         }
2266
2267         if (rval) {
2268                 DEBUG2(printk("scsi(%ld): Configure fabric error exit: "
2269                     "rval=%d\n", ha->host_no, rval));
2270         }
2271
2272         return (rval);
2273 }
2274
2275
2276 /*
2277  * qla2x00_find_all_fabric_devs
2278  *
2279  * Input:
2280  *      ha = adapter block pointer.
2281  *      dev = database device entry pointer.
2282  *
2283  * Returns:
2284  *      0 = success.
2285  *
2286  * Context:
2287  *      Kernel context.
2288  */
2289 static int
2290 qla2x00_find_all_fabric_devs(scsi_qla_host_t *ha, struct list_head *new_fcports)
2291 {
2292         int             rval;
2293         uint16_t        loop_id;
2294         fc_port_t       *fcport, *new_fcport, *fcptemp;
2295         int             found;
2296
2297         sw_info_t       *swl;
2298         int             swl_idx;
2299         int             first_dev, last_dev;
2300         port_id_t       wrap, nxt_d_id;
2301
2302         rval = QLA_SUCCESS;
2303
2304         /* Try GID_PT to get device list, else GAN. */
2305         swl = kmalloc(sizeof(sw_info_t) * MAX_FIBRE_DEVICES, GFP_ATOMIC);
2306         if (swl == NULL) {
2307                 /*EMPTY*/
2308                 DEBUG2(printk("scsi(%ld): GID_PT allocations failed, fallback "
2309                     "on GA_NXT\n", ha->host_no));
2310         } else {
2311                 memset(swl, 0, sizeof(sw_info_t) * MAX_FIBRE_DEVICES);
2312                 if (qla2x00_gid_pt(ha, swl) != QLA_SUCCESS) {
2313                         kfree(swl);
2314                         swl = NULL;
2315                 } else if (qla2x00_gpn_id(ha, swl) != QLA_SUCCESS) {
2316                         kfree(swl);
2317                         swl = NULL;
2318                 } else if (qla2x00_gnn_id(ha, swl) != QLA_SUCCESS) {
2319                         kfree(swl);
2320                         swl = NULL;
2321                 }
2322         }
2323         swl_idx = 0;
2324
2325         /* Allocate temporary fcport for any new fcports discovered. */
2326         new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
2327         if (new_fcport == NULL) {
2328                 if (swl)
2329                         kfree(swl);
2330                 return (QLA_MEMORY_ALLOC_FAILED);
2331         }
2332         new_fcport->flags |= (FCF_FABRIC_DEVICE | FCF_LOGIN_NEEDED);
2333
2334         /* Set start port ID scan at adapter ID. */
2335         first_dev = 1;
2336         last_dev = 0;
2337
2338         /* Starting free loop ID. */
2339         loop_id = ha->min_external_loopid;
2340         for (; loop_id <= ha->last_loop_id; loop_id++) {
2341                 if (qla2x00_is_reserved_id(ha, loop_id))
2342                         continue;
2343
2344                 if (atomic_read(&ha->loop_down_timer) ||
2345                     test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2346                         break;
2347
2348                 if (swl != NULL) {
2349                         if (last_dev) {
2350                                 wrap.b24 = new_fcport->d_id.b24;
2351                         } else {
2352                                 new_fcport->d_id.b24 = swl[swl_idx].d_id.b24;
2353                                 memcpy(new_fcport->node_name,
2354                                     swl[swl_idx].node_name, WWN_SIZE);
2355                                 memcpy(new_fcport->port_name,
2356                                     swl[swl_idx].port_name, WWN_SIZE);
2357
2358                                 if (swl[swl_idx].d_id.b.rsvd_1 != 0) {
2359                                         last_dev = 1;
2360                                 }
2361                                 swl_idx++;
2362                         }
2363                 } else {
2364                         /* Send GA_NXT to the switch */
2365                         rval = qla2x00_ga_nxt(ha, new_fcport);
2366                         if (rval != QLA_SUCCESS) {
2367                                 qla_printk(KERN_WARNING, ha,
2368                                     "SNS scan failed -- assuming zero-entry "
2369                                     "result...\n");
2370                                 list_for_each_entry_safe(fcport, fcptemp,
2371                                     new_fcports, list) {
2372                                         list_del(&fcport->list);
2373                                         kfree(fcport);
2374                                 }
2375                                 rval = QLA_SUCCESS;
2376                                 break;
2377                         }
2378                 }
2379
2380                 /* If wrap on switch device list, exit. */
2381                 if (first_dev) {
2382                         wrap.b24 = new_fcport->d_id.b24;
2383                         first_dev = 0;
2384                 } else if (new_fcport->d_id.b24 == wrap.b24) {
2385                         DEBUG2(printk("scsi(%ld): device wrap (%02x%02x%02x)\n",
2386                             ha->host_no, new_fcport->d_id.b.domain,
2387                             new_fcport->d_id.b.area, new_fcport->d_id.b.al_pa));
2388                         break;
2389                 }
2390
2391                 /* Bypass if host adapter. */
2392                 if (new_fcport->d_id.b24 == ha->d_id.b24)
2393                         continue;
2394
2395                 /* Bypass reserved domain fields. */
2396                 if ((new_fcport->d_id.b.domain & 0xf0) == 0xf0)
2397                         continue;
2398
2399                 /* Locate matching device in database. */
2400                 found = 0;
2401                 list_for_each_entry(fcport, &ha->fcports, list) {
2402                         if (memcmp(new_fcport->port_name, fcport->port_name,
2403                             WWN_SIZE))
2404                                 continue;
2405
2406                         found++;
2407
2408                         /*
2409                          * If address the same and state FCS_ONLINE, nothing
2410                          * changed.
2411                          */
2412                         if (fcport->d_id.b24 == new_fcport->d_id.b24 &&
2413                             atomic_read(&fcport->state) == FCS_ONLINE) {
2414                                 break;
2415                         }
2416
2417                         /*
2418                          * If device was not a fabric device before.
2419                          */
2420                         if ((fcport->flags & FCF_FABRIC_DEVICE) == 0) {
2421                                 fcport->d_id.b24 = new_fcport->d_id.b24;
2422                                 fcport->loop_id = FC_NO_LOOP_ID;
2423                                 fcport->flags |= (FCF_FABRIC_DEVICE |
2424                                     FCF_LOGIN_NEEDED);
2425                                 fcport->flags &= ~FCF_PERSISTENT_BOUND;
2426                                 break;
2427                         }
2428
2429                         /*
2430                          * Port ID changed or device was marked to be updated;
2431                          * Log it out if still logged in and mark it for
2432                          * relogin later.
2433                          */
2434                         fcport->d_id.b24 = new_fcport->d_id.b24;
2435                         fcport->flags |= FCF_LOGIN_NEEDED;
2436                         if (fcport->loop_id != FC_NO_LOOP_ID &&
2437                             (fcport->flags & FCF_TAPE_PRESENT) == 0 &&
2438                             fcport->port_type != FCT_INITIATOR &&
2439                             fcport->port_type != FCT_BROADCAST) {
2440                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2441                                     fcport->d_id.b.domain, fcport->d_id.b.area,
2442                                     fcport->d_id.b.al_pa);
2443                                 fcport->loop_id = FC_NO_LOOP_ID;
2444                         }
2445
2446                         break;
2447                 }
2448
2449                 if (found)
2450                         continue;
2451
2452                 /* If device was not in our fcports list, then add it. */
2453                 list_add_tail(&new_fcport->list, new_fcports);
2454
2455                 /* Allocate a new replacement fcport. */
2456                 nxt_d_id.b24 = new_fcport->d_id.b24;
2457                 new_fcport = qla2x00_alloc_fcport(ha, GFP_KERNEL);
2458                 if (new_fcport == NULL) {
2459                         if (swl)
2460                                 kfree(swl);
2461                         return (QLA_MEMORY_ALLOC_FAILED);
2462                 }
2463                 new_fcport->flags |= (FCF_FABRIC_DEVICE | FCF_LOGIN_NEEDED);
2464                 new_fcport->d_id.b24 = nxt_d_id.b24;
2465         }
2466
2467         if (swl)
2468                 kfree(swl);
2469
2470         if (new_fcport)
2471                 kfree(new_fcport);
2472
2473         if (!list_empty(new_fcports))
2474                 ha->device_flags |= DFLG_FABRIC_DEVICES;
2475
2476         return (rval);
2477 }
2478
2479 /*
2480  * qla2x00_find_new_loop_id
2481  *      Scan through our port list and find a new usable loop ID.
2482  *
2483  * Input:
2484  *      ha:     adapter state pointer.
2485  *      dev:    port structure pointer.
2486  *
2487  * Returns:
2488  *      qla2x00 local function return status code.
2489  *
2490  * Context:
2491  *      Kernel context.
2492  */
2493 int
2494 qla2x00_find_new_loop_id(scsi_qla_host_t *ha, fc_port_t *dev)
2495 {
2496         int     rval;
2497         int     found;
2498         fc_port_t *fcport;
2499         uint16_t first_loop_id;
2500
2501         rval = QLA_SUCCESS;
2502
2503         /* Save starting loop ID. */
2504         first_loop_id = dev->loop_id;
2505
2506         for (;;) {
2507                 /* Skip loop ID if already used by adapter. */
2508                 if (dev->loop_id == ha->loop_id) {
2509                         dev->loop_id++;
2510                 }
2511
2512                 /* Skip reserved loop IDs. */
2513                 while (qla2x00_is_reserved_id(ha, dev->loop_id)) {
2514                         dev->loop_id++;
2515                 }
2516
2517                 /* Reset loop ID if passed the end. */
2518                 if (dev->loop_id > ha->last_loop_id) {
2519                         /* first loop ID. */
2520                         dev->loop_id = ha->min_external_loopid;
2521                 }
2522
2523                 /* Check for loop ID being already in use. */
2524                 found = 0;
2525                 fcport = NULL;
2526                 list_for_each_entry(fcport, &ha->fcports, list) {
2527                         if (fcport->loop_id == dev->loop_id && fcport != dev) {
2528                                 /* ID possibly in use */
2529                                 found++;
2530                                 break;
2531                         }
2532                 }
2533
2534                 /* If not in use then it is free to use. */
2535                 if (!found) {
2536                         break;
2537                 }
2538
2539                 /* ID in use. Try next value. */
2540                 dev->loop_id++;
2541
2542                 /* If wrap around. No free ID to use. */
2543                 if (dev->loop_id == first_loop_id) {
2544                         dev->loop_id = FC_NO_LOOP_ID;
2545                         rval = QLA_FUNCTION_FAILED;
2546                         break;
2547                 }
2548         }
2549
2550         return (rval);
2551 }
2552
2553 /*
2554  * qla2x00_device_resync
2555  *      Marks devices in the database that needs resynchronization.
2556  *
2557  * Input:
2558  *      ha = adapter block pointer.
2559  *
2560  * Context:
2561  *      Kernel context.
2562  */
2563 static int
2564 qla2x00_device_resync(scsi_qla_host_t *ha)
2565 {
2566         int     rval;
2567         int     rval2;
2568         uint32_t mask;
2569         fc_port_t *fcport;
2570         uint32_t rscn_entry;
2571         uint8_t rscn_out_iter;
2572         uint8_t format;
2573         port_id_t d_id;
2574
2575         rval = QLA_RSCNS_HANDLED;
2576
2577         while (ha->rscn_out_ptr != ha->rscn_in_ptr ||
2578             ha->flags.rscn_queue_overflow) {
2579
2580                 rscn_entry = ha->rscn_queue[ha->rscn_out_ptr];
2581                 format = MSB(MSW(rscn_entry));
2582                 d_id.b.domain = LSB(MSW(rscn_entry));
2583                 d_id.b.area = MSB(LSW(rscn_entry));
2584                 d_id.b.al_pa = LSB(LSW(rscn_entry));
2585
2586                 DEBUG(printk("scsi(%ld): RSCN queue entry[%d] = "
2587                     "[%02x/%02x%02x%02x].\n",
2588                     ha->host_no, ha->rscn_out_ptr, format, d_id.b.domain,
2589                     d_id.b.area, d_id.b.al_pa));
2590
2591                 ha->rscn_out_ptr++;
2592                 if (ha->rscn_out_ptr == MAX_RSCN_COUNT)
2593                         ha->rscn_out_ptr = 0;
2594
2595                 /* Skip duplicate entries. */
2596                 for (rscn_out_iter = ha->rscn_out_ptr;
2597                     !ha->flags.rscn_queue_overflow &&
2598                     rscn_out_iter != ha->rscn_in_ptr;
2599                     rscn_out_iter = (rscn_out_iter ==
2600                         (MAX_RSCN_COUNT - 1)) ? 0: rscn_out_iter + 1) {
2601
2602                         if (rscn_entry != ha->rscn_queue[rscn_out_iter])
2603                                 break;
2604
2605                         DEBUG(printk("scsi(%ld): Skipping duplicate RSCN queue "
2606                             "entry found at [%d].\n", ha->host_no,
2607                             rscn_out_iter));
2608
2609                         ha->rscn_out_ptr = rscn_out_iter;
2610                 }
2611
2612                 /* Queue overflow, set switch default case. */
2613                 if (ha->flags.rscn_queue_overflow) {
2614                         DEBUG(printk("scsi(%ld): device_resync: rscn "
2615                             "overflow.\n", ha->host_no));
2616
2617                         format = 3;
2618                         ha->flags.rscn_queue_overflow = 0;
2619                 }
2620
2621                 switch (format) {
2622                 case 0:
2623                         if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
2624                             !IS_QLA6312(ha) && !IS_QLA6322(ha) &&
2625                             !IS_QLA24XX(ha) && !IS_QLA25XX(ha) &&
2626                             ha->flags.init_done) {
2627                                 /* Handle port RSCN via asyncronous IOCBs */
2628                                 rval2 = qla2x00_handle_port_rscn(ha, rscn_entry,
2629                                     NULL, 0);
2630                                 if (rval2 == QLA_SUCCESS)
2631                                         continue;
2632                         }
2633                         mask = 0xffffff;
2634                         break;
2635                 case 1:
2636                         mask = 0xffff00;
2637                         break;
2638                 case 2:
2639                         mask = 0xff0000;
2640                         break;
2641                 default:
2642                         mask = 0x0;
2643                         d_id.b24 = 0;
2644                         ha->rscn_out_ptr = ha->rscn_in_ptr;
2645                         break;
2646                 }
2647
2648                 rval = QLA_SUCCESS;
2649
2650                 /* Abort any outstanding IO descriptors. */
2651                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
2652                         qla2x00_cancel_io_descriptors(ha);
2653
2654                 list_for_each_entry(fcport, &ha->fcports, list) {
2655                         if ((fcport->flags & FCF_FABRIC_DEVICE) == 0 ||
2656                             (fcport->d_id.b24 & mask) != d_id.b24 ||
2657                             fcport->port_type == FCT_BROADCAST)
2658                                 continue;
2659
2660                         if (atomic_read(&fcport->state) == FCS_ONLINE) {
2661                                 if (format != 3 ||
2662                                     fcport->port_type != FCT_INITIATOR) {
2663                                         qla2x00_mark_device_lost(ha, fcport, 0);
2664                                 }
2665                         }
2666                         fcport->flags &= ~FCF_FARP_DONE;
2667                 }
2668         }
2669         return (rval);
2670 }
2671
2672 /*
2673  * qla2x00_fabric_dev_login
2674  *      Login fabric target device and update FC port database.
2675  *
2676  * Input:
2677  *      ha:             adapter state pointer.
2678  *      fcport:         port structure list pointer.
2679  *      next_loopid:    contains value of a new loop ID that can be used
2680  *                      by the next login attempt.
2681  *
2682  * Returns:
2683  *      qla2x00 local function return status code.
2684  *
2685  * Context:
2686  *      Kernel context.
2687  */
2688 static int
2689 qla2x00_fabric_dev_login(scsi_qla_host_t *ha, fc_port_t *fcport,
2690     uint16_t *next_loopid)
2691 {
2692         int     rval;
2693         int     retry;
2694         uint8_t opts;
2695
2696         rval = QLA_SUCCESS;
2697         retry = 0;
2698
2699         rval = qla2x00_fabric_login(ha, fcport, next_loopid);
2700         if (rval == QLA_SUCCESS) {
2701                 /* Send an ADISC to tape devices.*/
2702                 opts = 0;
2703                 if (fcport->flags & FCF_TAPE_PRESENT)
2704                         opts |= BIT_1;
2705                 rval = qla2x00_get_port_database(ha, fcport, opts);
2706                 if (rval != QLA_SUCCESS) {
2707                         ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2708                             fcport->d_id.b.domain, fcport->d_id.b.area,
2709                             fcport->d_id.b.al_pa);
2710                         qla2x00_mark_device_lost(ha, fcport, 1);
2711
2712                 } else {
2713                         qla2x00_update_fcport(ha, fcport);
2714                 }
2715         }
2716
2717         return (rval);
2718 }
2719
2720 /*
2721  * qla2x00_fabric_login
2722  *      Issue fabric login command.
2723  *
2724  * Input:
2725  *      ha = adapter block pointer.
2726  *      device = pointer to FC device type structure.
2727  *
2728  * Returns:
2729  *      0 - Login successfully
2730  *      1 - Login failed
2731  *      2 - Initiator device
2732  *      3 - Fatal error
2733  */
2734 int
2735 qla2x00_fabric_login(scsi_qla_host_t *ha, fc_port_t *fcport,
2736     uint16_t *next_loopid)
2737 {
2738         int     rval;
2739         int     retry;
2740         uint16_t tmp_loopid;
2741         uint16_t mb[MAILBOX_REGISTER_COUNT];
2742
2743         retry = 0;
2744         tmp_loopid = 0;
2745
2746         for (;;) {
2747                 DEBUG(printk("scsi(%ld): Trying Fabric Login w/loop id 0x%04x "
2748                     "for port %02x%02x%02x.\n",
2749                     ha->host_no, fcport->loop_id, fcport->d_id.b.domain,
2750                     fcport->d_id.b.area, fcport->d_id.b.al_pa));
2751
2752                 /* Login fcport on switch. */
2753                 ha->isp_ops.fabric_login(ha, fcport->loop_id,
2754                     fcport->d_id.b.domain, fcport->d_id.b.area,
2755                     fcport->d_id.b.al_pa, mb, BIT_0);
2756                 if (mb[0] == MBS_PORT_ID_USED) {
2757                         /*
2758                          * Device has another loop ID.  The firmware team
2759                          * recommends the driver perform an implicit login with
2760                          * the specified ID again. The ID we just used is save
2761                          * here so we return with an ID that can be tried by
2762                          * the next login.
2763                          */
2764                         retry++;
2765                         tmp_loopid = fcport->loop_id;
2766                         fcport->loop_id = mb[1];
2767
2768                         DEBUG(printk("Fabric Login: port in use - next "
2769                             "loop id=0x%04x, port Id=%02x%02x%02x.\n",
2770                             fcport->loop_id, fcport->d_id.b.domain,
2771                             fcport->d_id.b.area, fcport->d_id.b.al_pa));
2772
2773                 } else if (mb[0] == MBS_COMMAND_COMPLETE) {
2774                         /*
2775                          * Login succeeded.
2776                          */
2777                         if (retry) {
2778                                 /* A retry occurred before. */
2779                                 *next_loopid = tmp_loopid;
2780                         } else {
2781                                 /*
2782                                  * No retry occurred before. Just increment the
2783                                  * ID value for next login.
2784                                  */
2785                                 *next_loopid = (fcport->loop_id + 1);
2786                         }
2787
2788                         if (mb[1] & BIT_0) {
2789                                 fcport->port_type = FCT_INITIATOR;
2790                         } else {
2791                                 fcport->port_type = FCT_TARGET;
2792                                 if (mb[1] & BIT_1) {
2793                                         fcport->flags |= FCF_TAPE_PRESENT;
2794                                 }
2795                         }
2796
2797                         rval = QLA_SUCCESS;
2798                         break;
2799                 } else if (mb[0] == MBS_LOOP_ID_USED) {
2800                         /*
2801                          * Loop ID already used, try next loop ID.
2802                          */
2803                         fcport->loop_id++;
2804                         rval = qla2x00_find_new_loop_id(ha, fcport);
2805                         if (rval != QLA_SUCCESS) {
2806                                 /* Ran out of loop IDs to use */
2807                                 break;
2808                         }
2809                 } else if (mb[0] == MBS_COMMAND_ERROR) {
2810                         /*
2811                          * Firmware possibly timed out during login. If NO
2812                          * retries are left to do then the device is declared
2813                          * dead.
2814                          */
2815                         *next_loopid = fcport->loop_id;
2816                         ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2817                             fcport->d_id.b.domain, fcport->d_id.b.area,
2818                             fcport->d_id.b.al_pa);
2819                         qla2x00_mark_device_lost(ha, fcport, 1);
2820
2821                         rval = 1;
2822                         break;
2823                 } else {
2824                         /*
2825                          * unrecoverable / not handled error
2826                          */
2827                         DEBUG2(printk("%s(%ld): failed=%x port_id=%02x%02x%02x "
2828                             "loop_id=%x jiffies=%lx.\n",
2829                             __func__, ha->host_no, mb[0],
2830                             fcport->d_id.b.domain, fcport->d_id.b.area,
2831                             fcport->d_id.b.al_pa, fcport->loop_id, jiffies));
2832
2833                         *next_loopid = fcport->loop_id;
2834                         ha->isp_ops.fabric_logout(ha, fcport->loop_id,
2835                             fcport->d_id.b.domain, fcport->d_id.b.area,
2836                             fcport->d_id.b.al_pa);
2837                         fcport->loop_id = FC_NO_LOOP_ID;
2838                         atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2839
2840                         rval = 3;
2841                         break;
2842                 }
2843         }
2844
2845         return (rval);
2846 }
2847
2848 /*
2849  * qla2x00_local_device_login
2850  *      Issue local device login command.
2851  *
2852  * Input:
2853  *      ha = adapter block pointer.
2854  *      loop_id = loop id of device to login to.
2855  *
2856  * Returns (Where's the #define!!!!):
2857  *      0 - Login successfully
2858  *      1 - Login failed
2859  *      3 - Fatal error
2860  */
2861 int
2862 qla2x00_local_device_login(scsi_qla_host_t *ha, uint16_t loop_id)
2863 {
2864         int             rval;
2865         uint16_t        mb[MAILBOX_REGISTER_COUNT];
2866
2867         memset(mb, 0, sizeof(mb));
2868         rval = qla2x00_login_local_device(ha, loop_id, mb, BIT_0);
2869         if (rval == QLA_SUCCESS) {
2870                 /* Interrogate mailbox registers for any errors */
2871                 if (mb[0] == MBS_COMMAND_ERROR)
2872                         rval = 1;
2873                 else if (mb[0] == MBS_COMMAND_PARAMETER_ERROR)
2874                         /* device not in PCB table */
2875                         rval = 3;
2876         }
2877
2878         return (rval);
2879 }
2880
2881 /*
2882  *  qla2x00_loop_resync
2883  *      Resync with fibre channel devices.
2884  *
2885  * Input:
2886  *      ha = adapter block pointer.
2887  *
2888  * Returns:
2889  *      0 = success
2890  */
2891 int
2892 qla2x00_loop_resync(scsi_qla_host_t *ha)
2893 {
2894         int   rval;
2895         uint32_t wait_time;
2896
2897         rval = QLA_SUCCESS;
2898
2899         atomic_set(&ha->loop_state, LOOP_UPDATE);
2900         clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
2901         if (ha->flags.online) {
2902                 if (!(rval = qla2x00_fw_ready(ha))) {
2903                         /* Wait at most MAX_TARGET RSCNs for a stable link. */
2904                         wait_time = 256;
2905                         do {
2906                                 atomic_set(&ha->loop_state, LOOP_UPDATE);
2907
2908                                 /* Issue a marker after FW becomes ready. */
2909                                 qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
2910                                 ha->marker_needed = 0;
2911
2912                                 /* Remap devices on Loop. */
2913                                 clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2914
2915                                 qla2x00_configure_loop(ha);
2916                                 wait_time--;
2917                         } while (!atomic_read(&ha->loop_down_timer) &&
2918                                 !(test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) &&
2919                                 wait_time &&
2920                                 (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)));
2921                 }
2922         }
2923
2924         if (test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2925                 return (QLA_FUNCTION_FAILED);
2926         }
2927
2928         if (rval) {
2929                 DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
2930         }
2931
2932         return (rval);
2933 }
2934
2935 void
2936 qla2x00_rescan_fcports(scsi_qla_host_t *ha)
2937 {
2938         int rescan_done;
2939         fc_port_t *fcport;
2940
2941         rescan_done = 0;
2942         list_for_each_entry(fcport, &ha->fcports, list) {
2943                 if ((fcport->flags & FCF_RESCAN_NEEDED) == 0)
2944                         continue;
2945
2946                 qla2x00_update_fcport(ha, fcport);
2947                 fcport->flags &= ~FCF_RESCAN_NEEDED;
2948
2949                 rescan_done = 1;
2950         }
2951         qla2x00_probe_for_all_luns(ha);
2952 }
2953
2954 /*
2955 *  qla2x00_abort_isp
2956 *      Resets ISP and aborts all outstanding commands.
2957 *
2958 * Input:
2959 *      ha           = adapter block pointer.
2960 *
2961 * Returns:
2962 *      0 = success
2963 */
2964 int
2965 qla2x00_abort_isp(scsi_qla_host_t *ha)
2966 {
2967         unsigned long flags = 0;
2968         uint16_t       cnt;
2969         srb_t          *sp;
2970         uint8_t        status = 0;
2971
2972         if (ha->flags.online) {
2973                 ha->flags.online = 0;
2974                 clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2975
2976                 qla_printk(KERN_INFO, ha,
2977                     "Performing ISP error recovery - ha= %p.\n", ha);
2978                 ha->isp_ops.reset_chip(ha);
2979
2980                 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
2981                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
2982                         atomic_set(&ha->loop_state, LOOP_DOWN);
2983                         qla2x00_mark_all_devices_lost(ha);
2984                 } else {
2985                         if (!atomic_read(&ha->loop_down_timer))
2986                                 atomic_set(&ha->loop_down_timer,
2987                                     LOOP_DOWN_TIME);
2988                 }
2989
2990                 spin_lock_irqsave(&ha->hardware_lock, flags);
2991                 /* Requeue all commands in outstanding command list. */
2992                 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
2993                         sp = ha->outstanding_cmds[cnt];
2994                         if (sp) {
2995                                 ha->outstanding_cmds[cnt] = NULL;
2996                                 sp->flags = 0;
2997                                 sp->cmd->result = DID_RESET << 16;
2998                                 sp->cmd->host_scribble = (unsigned char *)NULL;
2999                                 qla2x00_sp_compl(ha, sp);
3000                         }
3001                 }
3002                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3003
3004                 ha->isp_ops.nvram_config(ha);
3005
3006                 if (!qla2x00_restart_isp(ha)) {
3007                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
3008
3009                         if (!atomic_read(&ha->loop_down_timer)) {
3010                                 /*
3011                                  * Issue marker command only when we are going
3012                                  * to start the I/O .
3013                                  */
3014                                 ha->marker_needed = 1;
3015                         }
3016
3017                         ha->flags.online = 1;
3018
3019                         ha->isp_ops.enable_intrs(ha);
3020
3021                         ha->isp_abort_cnt = 0;
3022                         clear_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
3023                 } else {        /* failed the ISP abort */
3024                         ha->flags.online = 1;
3025                         if (test_bit(ISP_ABORT_RETRY, &ha->dpc_flags)) {
3026                                 if (ha->isp_abort_cnt == 0) {
3027                                         qla_printk(KERN_WARNING, ha,
3028                                             "ISP error recovery failed - "
3029                                             "board disabled\n");
3030                                         /*
3031                                          * The next call disables the board
3032                                          * completely.
3033                                          */
3034                                         ha->isp_ops.reset_adapter(ha);
3035                                         ha->flags.online = 0;
3036                                         clear_bit(ISP_ABORT_RETRY,
3037                                             &ha->dpc_flags);
3038                                         status = 0;
3039                                 } else { /* schedule another ISP abort */
3040                                         ha->isp_abort_cnt--;
3041                                         DEBUG(printk("qla%ld: ISP abort - "
3042                                             "retry remaining %d\n",
3043                                             ha->host_no, ha->isp_abort_cnt);)
3044                                         status = 1;
3045                                 }
3046                         } else {
3047                                 ha->isp_abort_cnt = MAX_RETRIES_OF_ISP_ABORT;
3048                                 DEBUG(printk("qla2x00(%ld): ISP error recovery "
3049                                     "- retrying (%d) more times\n",
3050                                     ha->host_no, ha->isp_abort_cnt);)
3051                                 set_bit(ISP_ABORT_RETRY, &ha->dpc_flags);
3052                                 status = 1;
3053                         }
3054                 }
3055
3056         }
3057
3058         if (status) {
3059                 qla_printk(KERN_INFO, ha,
3060                         "qla2x00_abort_isp: **** FAILED ****\n");
3061         } else {
3062                 DEBUG(printk(KERN_INFO
3063                                 "qla2x00_abort_isp(%ld): exiting.\n",
3064                                 ha->host_no);)
3065         }
3066
3067         return(status);
3068 }
3069
3070 /*
3071 *  qla2x00_restart_isp
3072 *      restarts the ISP after a reset
3073 *
3074 * Input:
3075 *      ha = adapter block pointer.
3076 *
3077 * Returns:
3078 *      0 = success
3079 */
3080 static int
3081 qla2x00_restart_isp(scsi_qla_host_t *ha)
3082 {
3083         uint8_t         status = 0;
3084         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
3085         unsigned long   flags = 0;
3086         uint32_t wait_time;
3087
3088         /* If firmware needs to be loaded */
3089         if (qla2x00_isp_firmware(ha)) {
3090                 ha->flags.online = 0;
3091                 if (!(status = ha->isp_ops.chip_diag(ha))) {
3092                         if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
3093                                 status = qla2x00_setup_chip(ha);
3094                                 goto done;
3095                         }
3096
3097                         spin_lock_irqsave(&ha->hardware_lock, flags);
3098
3099                         if (!IS_QLA24XX(ha) && !IS_QLA25XX(ha)) {
3100                                 /*
3101                                  * Disable SRAM, Instruction RAM and GP RAM
3102                                  * parity.
3103                                  */
3104                                 WRT_REG_WORD(&reg->hccr,
3105                                     (HCCR_ENABLE_PARITY + 0x0));
3106                                 RD_REG_WORD(&reg->hccr);
3107                         }
3108
3109                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3110
3111                         status = qla2x00_setup_chip(ha);
3112
3113                         spin_lock_irqsave(&ha->hardware_lock, flags);
3114
3115                         if (!IS_QLA24XX(ha) && !IS_QLA25XX(ha)) {
3116                                 /* Enable proper parity */
3117                                 if (IS_QLA2300(ha))
3118                                         /* SRAM parity */
3119                                         WRT_REG_WORD(&reg->hccr,
3120                                             (HCCR_ENABLE_PARITY + 0x1));
3121                                 else
3122                                         /*
3123                                          * SRAM, Instruction RAM and GP RAM
3124                                          * parity.
3125                                          */
3126                                         WRT_REG_WORD(&reg->hccr,
3127                                             (HCCR_ENABLE_PARITY + 0x7));
3128                                 RD_REG_WORD(&reg->hccr);
3129                         }
3130
3131                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3132                 }
3133         }
3134
3135  done:
3136         if (!status && !(status = qla2x00_init_rings(ha))) {
3137                 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
3138                 if (!(status = qla2x00_fw_ready(ha))) {
3139                         DEBUG(printk("%s(): Start configure loop, "
3140                             "status = %d\n", __func__, status);)
3141
3142                         /* Issue a marker after FW becomes ready. */
3143                         qla2x00_marker(ha, 0, 0, MK_SYNC_ALL);
3144
3145                         ha->flags.online = 1;
3146                         /* Wait at most MAX_TARGET RSCNs for a stable link. */
3147                         wait_time = 256;
3148                         do {
3149                                 clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
3150                                 qla2x00_configure_loop(ha);
3151                                 wait_time--;
3152                         } while (!atomic_read(&ha->loop_down_timer) &&
3153                                 !(test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) &&
3154                                 wait_time &&
3155                                 (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)));
3156                 }
3157
3158                 /* if no cable then assume it's good */
3159                 if ((ha->device_flags & DFLG_NO_CABLE))
3160                         status = 0;
3161
3162                 DEBUG(printk("%s(): Configure loop done, status = 0x%x\n",
3163                                 __func__,
3164                                 status);)
3165         }
3166         return (status);
3167 }
3168
3169 /*
3170 * qla2x00_reset_adapter
3171 *      Reset adapter.
3172 *
3173 * Input:
3174 *      ha = adapter block pointer.
3175 */
3176 void
3177 qla2x00_reset_adapter(scsi_qla_host_t *ha)
3178 {
3179         unsigned long flags = 0;
3180         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
3181
3182         ha->flags.online = 0;
3183         ha->isp_ops.disable_intrs(ha);
3184
3185         spin_lock_irqsave(&ha->hardware_lock, flags);
3186         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
3187         RD_REG_WORD(&reg->hccr);                        /* PCI Posting. */
3188         WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
3189         RD_REG_WORD(&reg->hccr);                        /* PCI Posting. */
3190         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3191 }
3192
3193 void
3194 qla24xx_reset_adapter(scsi_qla_host_t *ha)
3195 {
3196         unsigned long flags = 0;
3197         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3198
3199         ha->flags.online = 0;
3200         ha->isp_ops.disable_intrs(ha);
3201
3202         spin_lock_irqsave(&ha->hardware_lock, flags);
3203         WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
3204         RD_REG_DWORD(&reg->hccr);
3205         WRT_REG_DWORD(&reg->hccr, HCCRX_REL_RISC_PAUSE);
3206         RD_REG_DWORD(&reg->hccr);
3207         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3208 }
3209
3210 int
3211 qla24xx_nvram_config(scsi_qla_host_t *ha)
3212 {
3213         int   rval;
3214         struct init_cb_24xx *icb;
3215         struct nvram_24xx *nv;
3216         uint32_t *dptr;
3217         uint8_t  *dptr1, *dptr2;
3218         uint32_t chksum;
3219         uint16_t cnt;
3220
3221         rval = QLA_SUCCESS;
3222         icb = (struct init_cb_24xx *)ha->init_cb;
3223         nv = (struct nvram_24xx *)ha->request_ring;
3224
3225         /* Determine NVRAM starting address. */
3226         ha->nvram_size = sizeof(struct nvram_24xx);
3227         ha->nvram_base = FA_NVRAM_FUNC0_ADDR;
3228         if (PCI_FUNC(ha->pdev->devfn))
3229                 ha->nvram_base = FA_NVRAM_FUNC1_ADDR;
3230
3231         /* Get NVRAM data and calculate checksum. */
3232         dptr = (uint32_t *)nv;
3233         ha->isp_ops.read_nvram(ha, (uint8_t *)dptr, ha->nvram_base,
3234             ha->nvram_size);
3235         for (cnt = 0, chksum = 0; cnt < ha->nvram_size >> 2; cnt++)
3236                 chksum += le32_to_cpu(*dptr++);
3237
3238         DEBUG5(printk("scsi(%ld): Contents of NVRAM\n", ha->host_no));
3239         DEBUG5(qla2x00_dump_buffer((uint8_t *)ha->request_ring,
3240             ha->nvram_size));
3241
3242         /* Bad NVRAM data, set defaults parameters. */
3243         if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' || nv->id[2] != 'P'
3244             || nv->id[3] != ' ' ||
3245             nv->nvram_version < __constant_cpu_to_le16(ICB_VERSION)) {
3246                 /* Reset NVRAM data. */
3247                 qla_printk(KERN_WARNING, ha, "Inconsistent NVRAM detected: "
3248                     "checksum=0x%x id=%c version=0x%x.\n", chksum, nv->id[0],
3249                     le16_to_cpu(nv->nvram_version));
3250                 qla_printk(KERN_WARNING, ha, "Falling back to functioning (yet "
3251                     "invalid -- WWPN) defaults.\n");
3252
3253                 /*
3254                  * Set default initialization control block.
3255                  */
3256                 memset(nv, 0, ha->nvram_size);
3257                 nv->nvram_version = __constant_cpu_to_le16(ICB_VERSION);
3258                 nv->version = __constant_cpu_to_le16(ICB_VERSION);
3259                 nv->frame_payload_size = __constant_cpu_to_le16(2048);
3260                 nv->execution_throttle = __constant_cpu_to_le16(0xFFFF);
3261                 nv->exchange_count = __constant_cpu_to_le16(0);
3262                 nv->hard_address = __constant_cpu_to_le16(124);
3263                 nv->port_name[0] = 0x21;
3264                 nv->port_name[1] = 0x00 + PCI_FUNC(ha->pdev->devfn);
3265                 nv->port_name[2] = 0x00;
3266                 nv->port_name[3] = 0xe0;
3267                 nv->port_name[4] = 0x8b;
3268                 nv->port_name[5] = 0x1c;
3269                 nv->port_name[6] = 0x55;
3270                 nv->port_name[7] = 0x86;
3271                 nv->node_name[0] = 0x20;
3272                 nv->node_name[1] = 0x00;
3273                 nv->node_name[2] = 0x00;
3274                 nv->node_name[3] = 0xe0;
3275                 nv->node_name[4] = 0x8b;
3276                 nv->node_name[5] = 0x1c;
3277                 nv->node_name[6] = 0x55;
3278                 nv->node_name[7] = 0x86;
3279                 nv->login_retry_count = __constant_cpu_to_le16(8);
3280                 nv->link_down_timeout = __constant_cpu_to_le16(200);
3281                 nv->interrupt_delay_timer = __constant_cpu_to_le16(0);
3282                 nv->login_timeout = __constant_cpu_to_le16(0);
3283                 nv->firmware_options_1 =
3284                     __constant_cpu_to_le32(BIT_14|BIT_13|BIT_2|BIT_1);
3285                 nv->firmware_options_2 = __constant_cpu_to_le32(2 << 4);
3286                 nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12);
3287                 nv->firmware_options_3 = __constant_cpu_to_le32(2 << 13);
3288                 nv->host_p = __constant_cpu_to_le32(BIT_11|BIT_10);
3289                 nv->efi_parameters = __constant_cpu_to_le32(0);
3290                 nv->reset_delay = 5;
3291                 nv->max_luns_per_target = __constant_cpu_to_le16(128);
3292                 nv->port_down_retry_count = __constant_cpu_to_le16(30);
3293                 nv->link_down_timeout = __constant_cpu_to_le16(30);
3294
3295                 rval = 1;
3296         }
3297
3298         /* Reset Initialization control block */
3299         memset(icb, 0, sizeof(struct init_cb_24xx));
3300
3301         /* Copy 1st segment. */
3302         dptr1 = (uint8_t *)icb;
3303         dptr2 = (uint8_t *)&nv->version;
3304         cnt = (uint8_t *)&icb->response_q_inpointer - (uint8_t *)&icb->version;
3305         while (cnt--)
3306                 *dptr1++ = *dptr2++;
3307
3308         icb->login_retry_count = nv->login_retry_count;
3309         icb->link_down_timeout = nv->link_down_timeout;
3310
3311         /* Copy 2nd segment. */
3312         dptr1 = (uint8_t *)&icb->interrupt_delay_timer;
3313         dptr2 = (uint8_t *)&nv->interrupt_delay_timer;
3314         cnt = (uint8_t *)&icb->reserved_3 -
3315             (uint8_t *)&icb->interrupt_delay_timer;
3316         while (cnt--)
3317                 *dptr1++ = *dptr2++;
3318
3319         /*
3320          * Setup driver NVRAM options.
3321          */
3322         if (memcmp(nv->model_name, BINZERO, sizeof(nv->model_name)) != 0) {
3323                 char *st, *en;
3324                 uint16_t index;
3325
3326                 strncpy(ha->model_number, nv->model_name,
3327                     sizeof(nv->model_name));
3328                 st = en = ha->model_number;
3329                 en += sizeof(nv->model_name) - 1;
3330                 while (en > st) {
3331                         if (*en != 0x20 && *en != 0x00)
3332                                 break;
3333                         *en-- = '\0';
3334                 }
3335
3336                 index = (ha->pdev->subsystem_device & 0xff);
3337                 if (index < QLA_MODEL_NAMES)
3338                         ha->model_desc = qla2x00_model_desc[index];
3339         } else
3340                 strcpy(ha->model_number, "QLA2462");
3341
3342         /* Prepare nodename */
3343         if ((icb->firmware_options_1 & BIT_14) == 0) {
3344                 /*
3345                  * Firmware will apply the following mask if the nodename was
3346                  * not provided.
3347                  */
3348                 memcpy(icb->node_name, icb->port_name, WWN_SIZE);
3349                 icb->node_name[0] &= 0xF0;
3350         }
3351
3352         /* Set host adapter parameters. */
3353         ha->flags.disable_risc_code_load = 0;
3354         ha->flags.enable_lip_reset = 1;
3355         ha->flags.enable_lip_full_login = 1;
3356         ha->flags.enable_target_reset = 1;
3357         ha->flags.enable_led_scheme = 0;
3358
3359         ha->operating_mode =
3360             (icb->firmware_options_2 & (BIT_6 | BIT_5 | BIT_4)) >> 4;
3361
3362         memcpy(ha->fw_seriallink_options24, nv->seriallink_options,
3363             sizeof(ha->fw_seriallink_options24));
3364
3365         /* save HBA serial number */
3366         ha->serial0 = icb->port_name[5];
3367         ha->serial1 = icb->port_name[6];
3368         ha->serial2 = icb->port_name[7];
3369         ha->node_name = icb->node_name;
3370         ha->port_name = icb->port_name;
3371
3372         ha->retry_count = le16_to_cpu(nv->login_retry_count);
3373
3374         /* Set minimum login_timeout to 4 seconds. */
3375         if (le16_to_cpu(nv->login_timeout) < ql2xlogintimeout)
3376                 nv->login_timeout = cpu_to_le16(ql2xlogintimeout);
3377         if (le16_to_cpu(nv->login_timeout) < 4)
3378                 nv->login_timeout = __constant_cpu_to_le16(4);
3379         ha->login_timeout = le16_to_cpu(nv->login_timeout);
3380         icb->login_timeout = cpu_to_le16(nv->login_timeout);
3381
3382         /* Set minimum RATOV to 200 tenths of a second. */
3383         ha->r_a_tov = 200;
3384
3385         ha->loop_reset_delay = nv->reset_delay;
3386
3387         /* Link Down Timeout = 0:
3388          *
3389          *      When Port Down timer expires we will start returning
3390          *      I/O's to OS with "DID_NO_CONNECT".
3391          *
3392          * Link Down Timeout != 0:
3393          *
3394          *       The driver waits for the link to come up after link down
3395          *       before returning I/Os to OS with "DID_NO_CONNECT".
3396          */
3397         if (le16_to_cpu(nv->link_down_timeout) == 0) {
3398                 ha->loop_down_abort_time =
3399                     (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
3400         } else {
3401                 ha->link_down_timeout = le16_to_cpu(nv->link_down_timeout);
3402                 ha->loop_down_abort_time =
3403                     (LOOP_DOWN_TIME - ha->link_down_timeout);
3404         }
3405
3406         /* Need enough time to try and get the port back. */
3407         ha->port_down_retry_count = le16_to_cpu(nv->port_down_retry_count);
3408         if (qlport_down_retry)
3409                 ha->port_down_retry_count = qlport_down_retry;
3410
3411         /* Set login_retry_count */
3412         ha->login_retry_count  = le16_to_cpu(nv->login_retry_count);
3413         if (ha->port_down_retry_count ==
3414             le16_to_cpu(nv->port_down_retry_count) &&
3415             ha->port_down_retry_count > 3)
3416                 ha->login_retry_count = ha->port_down_retry_count;
3417         else if (ha->port_down_retry_count > (int)ha->login_retry_count)
3418                 ha->login_retry_count = ha->port_down_retry_count;
3419         if (ql2xloginretrycount)
3420                 ha->login_retry_count = ql2xloginretrycount;
3421
3422         if (rval) {
3423                 DEBUG2_3(printk(KERN_WARNING
3424                     "scsi(%ld): NVRAM configuration failed!\n", ha->host_no));
3425         }
3426         return (rval);
3427 }
3428
3429 int
3430 qla2x00_load_risc(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3431 {
3432         int             rval;
3433         uint16_t        cnt;
3434         uint16_t        *risc_code;
3435         unsigned long   risc_address;
3436         unsigned long   risc_code_size;
3437         int             num;
3438         int             i;
3439         uint16_t        *req_ring;
3440         struct qla_fw_info *fw_iter;
3441
3442         rval = QLA_SUCCESS;
3443
3444         /* Load firmware sequences */
3445         fw_iter = ha->brd_info->fw_info;
3446         *srisc_addr = *ha->brd_info->fw_info->fwstart;
3447         while (fw_iter->addressing != FW_INFO_ADDR_NOMORE) {
3448                 risc_code = fw_iter->fwcode;
3449                 risc_code_size = *fw_iter->fwlen;
3450
3451                 if (fw_iter->addressing == FW_INFO_ADDR_NORMAL) {
3452                         risc_address = *fw_iter->fwstart;
3453                 } else {
3454                         /* Extended address */
3455                         risc_address = *fw_iter->lfwstart;
3456                 }
3457
3458                 num = 0;
3459                 rval = 0;
3460                 while (risc_code_size > 0 && !rval) {
3461                         cnt = (uint16_t)(ha->fw_transfer_size >> 1);
3462                         if (cnt > risc_code_size)
3463                                 cnt = risc_code_size;
3464
3465                         DEBUG7(printk("scsi(%ld): Loading risc segment@ "
3466                             "addr %p, number of bytes 0x%x, offset 0x%lx.\n",
3467                             ha->host_no, risc_code, cnt, risc_address));
3468
3469                         req_ring = (uint16_t *)ha->request_ring;
3470                         for (i = 0; i < cnt; i++)
3471                                 req_ring[i] = cpu_to_le16(risc_code[i]);
3472
3473                         if (fw_iter->addressing == FW_INFO_ADDR_NORMAL) {
3474                                 rval = qla2x00_load_ram(ha, ha->request_dma,
3475                                     risc_address, cnt);
3476                         } else {
3477                                 rval = qla2x00_load_ram_ext(ha,
3478                                     ha->request_dma, risc_address, cnt);
3479                         }
3480                         if (rval) {
3481                                 DEBUG(printk("scsi(%ld): [ERROR] Failed to "
3482                                     "load segment %d of firmware\n",
3483                                     ha->host_no, num));
3484                                 qla_printk(KERN_WARNING, ha,
3485                                     "[ERROR] Failed to load segment %d of "
3486                                     "firmware\n", num);
3487
3488                                 qla2x00_dump_regs(ha);
3489                                 break;
3490                         }
3491
3492                         risc_code += cnt;
3493                         risc_address += cnt;
3494                         risc_code_size -= cnt;
3495                         num++;
3496                 }
3497
3498                 /* Next firmware sequence */
3499                 fw_iter++;
3500         }
3501
3502         return (rval);
3503 }
3504
3505 int
3506 qla24xx_load_risc_flash(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3507 {
3508         int     rval;
3509         int     segments, fragment;
3510         uint32_t faddr;
3511         uint32_t *dcode, dlen;
3512         uint32_t risc_addr;
3513         uint32_t risc_size;
3514         uint32_t i;
3515
3516         rval = QLA_SUCCESS;
3517
3518         segments = FA_RISC_CODE_SEGMENTS;
3519         faddr = FA_RISC_CODE_ADDR;
3520         dcode = (uint32_t *)ha->request_ring;
3521         *srisc_addr = 0;
3522
3523         /* Validate firmware image by checking version. */
3524         qla24xx_read_flash_data(ha, dcode, faddr + 4, 4);
3525         for (i = 0; i < 4; i++)
3526                 dcode[i] = be32_to_cpu(dcode[i]);
3527         if ((dcode[0] == 0xffffffff && dcode[1] == 0xffffffff &&
3528             dcode[2] == 0xffffffff && dcode[3] == 0xffffffff) ||
3529             (dcode[0] == 0 && dcode[1] == 0 && dcode[2] == 0 &&
3530                 dcode[3] == 0)) {
3531                 qla_printk(KERN_WARNING, ha,
3532                     "Unable to verify integrity of flash firmware image!\n");
3533                 qla_printk(KERN_WARNING, ha,
3534                     "Firmware data: %08x %08x %08x %08x!\n", dcode[0],
3535                     dcode[1], dcode[2], dcode[3]);
3536
3537                 return QLA_FUNCTION_FAILED;
3538         }
3539
3540         while (segments && rval == QLA_SUCCESS) {
3541                 /* Read segment's load information. */
3542                 qla24xx_read_flash_data(ha, dcode, faddr, 4);
3543
3544                 risc_addr = be32_to_cpu(dcode[2]);
3545                 *srisc_addr = *srisc_addr == 0 ? risc_addr : *srisc_addr;
3546                 risc_size = be32_to_cpu(dcode[3]);
3547
3548                 fragment = 0;
3549                 while (risc_size > 0 && rval == QLA_SUCCESS) {
3550                         dlen = (uint32_t)(ha->fw_transfer_size >> 2);
3551                         if (dlen > risc_size)
3552                                 dlen = risc_size;
3553
3554                         DEBUG7(printk("scsi(%ld): Loading risc segment@ risc "
3555                             "addr %x, number of dwords 0x%x, offset 0x%x.\n",
3556                             ha->host_no, risc_addr, dlen, faddr));
3557
3558                         qla24xx_read_flash_data(ha, dcode, faddr, dlen);
3559                         for (i = 0; i < dlen; i++)
3560                                 dcode[i] = swab32(dcode[i]);
3561
3562                         rval = qla2x00_load_ram_ext(ha, ha->request_dma,
3563                             risc_addr, dlen);
3564                         if (rval) {
3565                                 DEBUG(printk("scsi(%ld):[ERROR] Failed to load "
3566                                     "segment %d of firmware\n", ha->host_no,
3567                                     fragment));
3568                                 qla_printk(KERN_WARNING, ha,
3569                                     "[ERROR] Failed to load segment %d of "
3570                                     "firmware\n", fragment);
3571                                 break;
3572                         }
3573
3574                         faddr += dlen;
3575                         risc_addr += dlen;
3576                         risc_size -= dlen;
3577                         fragment++;
3578                 }
3579
3580                 /* Next segment. */
3581                 segments--;
3582         }
3583
3584         return rval;
3585 }
3586
3587 int
3588 qla24xx_load_risc_hotplug(scsi_qla_host_t *ha, uint32_t *srisc_addr)
3589 {
3590         int     rval;
3591         int     segments, fragment;
3592         uint32_t *dcode, dlen;
3593         uint32_t risc_addr;
3594         uint32_t risc_size;
3595         uint32_t i;
3596         const struct firmware *fw_entry;
3597         uint32_t *fwcode, fwclen;
3598
3599         if (request_firmware(&fw_entry, ha->brd_info->fw_fname,
3600             &ha->pdev->dev)) {
3601                 qla_printk(KERN_ERR, ha,
3602                     "Firmware image file not available: '%s'\n",
3603                     ha->brd_info->fw_fname);
3604                 return QLA_FUNCTION_FAILED;
3605         }
3606
3607         rval = QLA_SUCCESS;
3608
3609         segments = FA_RISC_CODE_SEGMENTS;
3610         dcode = (uint32_t *)ha->request_ring;
3611         *srisc_addr = 0;
3612         fwcode = (uint32_t *)fw_entry->data;
3613         fwclen = 0;
3614
3615         /* Validate firmware image by checking version. */
3616         if (fw_entry->size < 8 * sizeof(uint32_t)) {
3617                 qla_printk(KERN_WARNING, ha,
3618                     "Unable to verify integrity of flash firmware image "
3619                     "(%Zd)!\n", fw_entry->size);
3620                 goto fail_fw_integrity;
3621         }
3622         for (i = 0; i < 4; i++)
3623                 dcode[i] = be32_to_cpu(fwcode[i + 4]);
3624         if ((dcode[0] == 0xffffffff && dcode[1] == 0xffffffff &&
3625             dcode[2] == 0xffffffff && dcode[3] == 0xffffffff) ||
3626             (dcode[0] == 0 && dcode[1] == 0 && dcode[2] == 0 &&
3627                 dcode[3] == 0)) {
3628                 qla_printk(KERN_WARNING, ha,
3629                     "Unable to verify integrity of flash firmware image!\n");
3630                 qla_printk(KERN_WARNING, ha,
3631                     "Firmware data: %08x %08x %08x %08x!\n", dcode[0],
3632                     dcode[1], dcode[2], dcode[3]);
3633                 goto fail_fw_integrity;
3634         }
3635
3636         while (segments && rval == QLA_SUCCESS) {
3637                 risc_addr = be32_to_cpu(fwcode[2]);
3638                 *srisc_addr = *srisc_addr == 0 ? risc_addr : *srisc_addr;
3639                 risc_size = be32_to_cpu(fwcode[3]);
3640
3641                 /* Validate firmware image size. */
3642                 fwclen += risc_size * sizeof(uint32_t);
3643                 if (fw_entry->size < fwclen) {
3644                         qla_printk(KERN_WARNING, ha,
3645                             "Unable to verify integrity of flash firmware "
3646                             "image (%Zd)!\n", fw_entry->size);
3647                         goto fail_fw_integrity;
3648                 }
3649
3650                 fragment = 0;
3651                 while (risc_size > 0 && rval == QLA_SUCCESS) {
3652                         dlen = (uint32_t)(ha->fw_transfer_size >> 2);
3653                         if (dlen > risc_size)
3654                                 dlen = risc_size;
3655
3656                         DEBUG7(printk("scsi(%ld): Loading risc segment@ risc "
3657                             "addr %x, number of dwords 0x%x.\n", ha->host_no,
3658                             risc_addr, dlen));
3659
3660                         for (i = 0; i < dlen; i++)
3661                                 dcode[i] = swab32(fwcode[i]);
3662
3663                         rval = qla2x00_load_ram_ext(ha, ha->request_dma,
3664                             risc_addr, dlen);
3665                         if (rval) {
3666                                 DEBUG(printk("scsi(%ld):[ERROR] Failed to load "
3667                                     "segment %d of firmware\n", ha->host_no,
3668                                     fragment));
3669                                 qla_printk(KERN_WARNING, ha,
3670                                     "[ERROR] Failed to load segment %d of "
3671                                     "firmware\n", fragment);
3672                                 break;
3673                         }
3674
3675                         fwcode += dlen;
3676                         risc_addr += dlen;
3677                         risc_size -= dlen;
3678                         fragment++;
3679                 }
3680
3681                 /* Next segment. */
3682                 segments--;
3683         }
3684
3685         release_firmware(fw_entry);
3686         return rval;
3687
3688 fail_fw_integrity:
3689
3690         release_firmware(fw_entry);
3691         return QLA_FUNCTION_FAILED;
3692
3693 }