/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2013 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"
#include "qla_gbl.h"

#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>

#include "qla_devtbl.h"

#ifdef CONFIG_SPARC
#include <asm/prom.h>
#endif

#include <target/target_core_base.h>
#include "qla_target.h"

/*
*  QLogic ISP2x00 Hardware Support Function Prototypes.
*/
static int qla2x00_isp_firmware(scsi_qla_host_t *);
static int qla2x00_setup_chip(scsi_qla_host_t *);
static int qla2x00_fw_ready(scsi_qla_host_t *);
static int qla2x00_configure_hba(scsi_qla_host_t *);
static int qla2x00_configure_loop(scsi_qla_host_t *);
static int qla2x00_configure_local_loop(scsi_qla_host_t *);
static int qla2x00_configure_fabric(scsi_qla_host_t *);
static int qla2x00_find_all_fabric_devs(scsi_qla_host_t *, struct list_head *);
static int qla2x00_fabric_dev_login(scsi_qla_host_t *, fc_port_t *,
    uint16_t *);

static int qla2x00_restart_isp(scsi_qla_host_t *);

static struct qla_chip_state_84xx *qla84xx_get_chip(struct scsi_qla_host *);
static int qla84xx_init_chip(scsi_qla_host_t *);
static int qla25xx_init_queues(struct qla_hw_data *);

/* SRB Extensions ---------------------------------------------------------- */

void
qla2x00_sp_timeout(unsigned long __data)
{
        srb_t *sp = (srb_t *)__data;
        struct srb_iocb *iocb;
        fc_port_t *fcport = sp->fcport;
        struct qla_hw_data *ha = fcport->vha->hw;
        struct req_que *req;
        unsigned long flags;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        req = ha->req_q_map[0];
        req->outstanding_cmds[sp->handle] = NULL;
        iocb = &sp->u.iocb_cmd;
        iocb->timeout(sp);
        sp->free(fcport->vha, sp);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

void
qla2x00_sp_free(void *data, void *ptr)
{
        srb_t *sp = (srb_t *)ptr;
        struct srb_iocb *iocb = &sp->u.iocb_cmd;
        struct scsi_qla_host *vha = (scsi_qla_host_t *)data;

        del_timer(&iocb->timer);
        qla2x00_rel_sp(vha, sp);
}

/* Asynchronous Login/Logout Routines -------------------------------------- */

unsigned long
qla2x00_get_async_timeout(struct scsi_qla_host *vha)
{
        unsigned long tmo;
        struct qla_hw_data *ha = vha->hw;

        /* Firmware should use switch negotiated r_a_tov for timeout. */
        tmo = ha->r_a_tov / 10 * 2;
        if (IS_QLAFX00(ha)) {
                tmo = FX00_DEF_RATOV * 2;
        } else if (!IS_FWI2_CAPABLE(ha)) {
                /*
                 * Except for earlier ISPs where the timeout is seeded from the
                 * initialization control block.
                 */
                tmo = ha->login_timeout;
        }
        return tmo;
}

static void
qla2x00_async_iocb_timeout(void *data)
{
        srb_t *sp = (srb_t *)data;
        fc_port_t *fcport = sp->fcport;

        ql_dbg(ql_dbg_disc, fcport->vha, 0x2071,
            "Async-%s timeout - hdl=%x portid=%02x%02x%02x.\n",
            sp->name, sp->handle, fcport->d_id.b.domain, fcport->d_id.b.area,
            fcport->d_id.b.al_pa);

        fcport->flags &= ~FCF_ASYNC_SENT;
        if (sp->type == SRB_LOGIN_CMD) {
                struct srb_iocb *lio = &sp->u.iocb_cmd;
                qla2x00_post_async_logout_work(fcport->vha, fcport, NULL);
                /* Retry as needed. */
                lio->u.logio.data[0] = MBS_COMMAND_ERROR;
                lio->u.logio.data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
                        QLA_LOGIO_LOGIN_RETRIED : 0;
                qla2x00_post_async_login_done_work(fcport->vha, fcport,
                        lio->u.logio.data);
        }
}

static void
qla2x00_async_login_sp_done(void *data, void *ptr, int res)
{
        srb_t *sp = (srb_t *)ptr;
        struct srb_iocb *lio = &sp->u.iocb_cmd;
        struct scsi_qla_host *vha = (scsi_qla_host_t *)data;

        if (!test_bit(UNLOADING, &vha->dpc_flags))
                qla2x00_post_async_login_done_work(sp->fcport->vha, sp->fcport,
                    lio->u.logio.data);
        sp->free(sp->fcport->vha, sp);
}

int
qla2x00_async_login(struct scsi_qla_host *vha, fc_port_t *fcport,
    uint16_t *data)
{
        srb_t *sp;
        struct srb_iocb *lio;
        int rval;

        rval = QLA_FUNCTION_FAILED;
        sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
        if (!sp)
                goto done;

        sp->type = SRB_LOGIN_CMD;
        sp->name = "login";
        qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

        lio = &sp->u.iocb_cmd;
        lio->timeout = qla2x00_async_iocb_timeout;
        sp->done = qla2x00_async_login_sp_done;
        lio->u.logio.flags |= SRB_LOGIN_COND_PLOGI;
        if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
                lio->u.logio.flags |= SRB_LOGIN_RETRIED;
        rval = qla2x00_start_sp(sp);
        if (rval != QLA_SUCCESS)
                goto done_free_sp;

        ql_dbg(ql_dbg_disc, vha, 0x2072,
            "Async-login - hdl=%x, loopid=%x portid=%02x%02x%02x "
            "retries=%d.\n", sp->handle, fcport->loop_id,
            fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
            fcport->login_retry);
        return rval;

done_free_sp:
        sp->free(fcport->vha, sp);
done:
        return rval;
}

static void
qla2x00_async_logout_sp_done(void *data, void *ptr, int res)
{
        srb_t *sp = (srb_t *)ptr;
        struct srb_iocb *lio = &sp->u.iocb_cmd;
        struct scsi_qla_host *vha = (scsi_qla_host_t *)data;

        if (!test_bit(UNLOADING, &vha->dpc_flags))
                qla2x00_post_async_logout_done_work(sp->fcport->vha, sp->fcport,
                    lio->u.logio.data);
        sp->free(sp->fcport->vha, sp);
}

int
qla2x00_async_logout(struct scsi_qla_host *vha, fc_port_t *fcport)
{
        srb_t *sp;
        struct srb_iocb *lio;
        int rval;

        rval = QLA_FUNCTION_FAILED;
        sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
        if (!sp)
                goto done;

        sp->type = SRB_LOGOUT_CMD;
        sp->name = "logout";
        qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

        lio = &sp->u.iocb_cmd;
        lio->timeout = qla2x00_async_iocb_timeout;
        sp->done = qla2x00_async_logout_sp_done;
        rval = qla2x00_start_sp(sp);
        if (rval != QLA_SUCCESS)
                goto done_free_sp;

        ql_dbg(ql_dbg_disc, vha, 0x2070,
            "Async-logout - hdl=%x loop-id=%x portid=%02x%02x%02x.\n",
            sp->handle, fcport->loop_id, fcport->d_id.b.domain,
            fcport->d_id.b.area, fcport->d_id.b.al_pa);
        return rval;

done_free_sp:
        sp->free(fcport->vha, sp);
done:
        return rval;
}

static void
qla2x00_async_adisc_sp_done(void *data, void *ptr, int res)
{
        srb_t *sp = (srb_t *)ptr;
        struct srb_iocb *lio = &sp->u.iocb_cmd;
        struct scsi_qla_host *vha = (scsi_qla_host_t *)data;

        if (!test_bit(UNLOADING, &vha->dpc_flags))
                qla2x00_post_async_adisc_done_work(sp->fcport->vha, sp->fcport,
                    lio->u.logio.data);
        sp->free(sp->fcport->vha, sp);
}

int
qla2x00_async_adisc(struct scsi_qla_host *vha, fc_port_t *fcport,
    uint16_t *data)
{
        srb_t *sp;
        struct srb_iocb *lio;
        int rval;

        rval = QLA_FUNCTION_FAILED;
        sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
        if (!sp)
                goto done;

        sp->type = SRB_ADISC_CMD;
        sp->name = "adisc";
        qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

        lio = &sp->u.iocb_cmd;
        lio->timeout = qla2x00_async_iocb_timeout;
        sp->done = qla2x00_async_adisc_sp_done;
        if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
                lio->u.logio.flags |= SRB_LOGIN_RETRIED;
        rval = qla2x00_start_sp(sp);
        if (rval != QLA_SUCCESS)
                goto done_free_sp;

        ql_dbg(ql_dbg_disc, vha, 0x206f,
            "Async-adisc - hdl=%x loopid=%x portid=%02x%02x%02x.\n",
            sp->handle, fcport->loop_id, fcport->d_id.b.domain,
            fcport->d_id.b.area, fcport->d_id.b.al_pa);
        return rval;

done_free_sp:
        sp->free(fcport->vha, sp);
done:
        return rval;
}

static void
qla2x00_async_tm_cmd_done(void *data, void *ptr, int res)
{
        srb_t *sp = (srb_t *)ptr;
        struct srb_iocb *iocb = &sp->u.iocb_cmd;
        struct scsi_qla_host *vha = (scsi_qla_host_t *)data;
        uint32_t flags;
        uint16_t lun;
        int rval;

        if (!test_bit(UNLOADING, &vha->dpc_flags)) {
                flags = iocb->u.tmf.flags;
                lun = (uint16_t)iocb->u.tmf.lun;

                /* Issue Marker IOCB */
                rval = qla2x00_marker(vha, vha->hw->req_q_map[0],
                        vha->hw->rsp_q_map[0], sp->fcport->loop_id, lun,
                        flags == TCF_LUN_RESET ? MK_SYNC_ID_LUN : MK_SYNC_ID);

                if ((rval != QLA_SUCCESS) || iocb->u.tmf.data) {
                        ql_dbg(ql_dbg_taskm, vha, 0x8030,
                            "TM IOCB failed (%x).\n", rval);
                }
        }
        sp->free(sp->fcport->vha, sp);
}

int
qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t tm_flags, uint32_t lun,
        uint32_t tag)
{
        struct scsi_qla_host *vha = fcport->vha;
        srb_t *sp;
        struct srb_iocb *tcf;
        int rval;

        rval = QLA_FUNCTION_FAILED;
        sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
        if (!sp)
                goto done;

        sp->type = SRB_TM_CMD;
        sp->name = "tmf";
        qla2x00_init_timer(sp, qla2x00_get_async_timeout(vha) + 2);

        tcf = &sp->u.iocb_cmd;
        tcf->u.tmf.flags = tm_flags;
        tcf->u.tmf.lun = lun;
        tcf->u.tmf.data = tag;
        tcf->timeout = qla2x00_async_iocb_timeout;
        sp->done = qla2x00_async_tm_cmd_done;

        rval = qla2x00_start_sp(sp);
        if (rval != QLA_SUCCESS)
                goto done_free_sp;

        ql_dbg(ql_dbg_taskm, vha, 0x802f,
            "Async-tmf hdl=%x loop-id=%x portid=%02x%02x%02x.\n",
            sp->handle, fcport->loop_id, fcport->d_id.b.domain,
            fcport->d_id.b.area, fcport->d_id.b.al_pa);
        return rval;

done_free_sp:
        sp->free(fcport->vha, sp);
done:
        return rval;
}

void
qla2x00_async_login_done(struct scsi_qla_host *vha, fc_port_t *fcport,
    uint16_t *data)
{
        int rval;

        switch (data[0]) {
        case MBS_COMMAND_COMPLETE:
                /*
                 * Driver must validate login state - If PRLI not complete,
                 * force a relogin attempt via implicit LOGO, PLOGI, and PRLI
                 * requests.
                 */
                rval = qla2x00_get_port_database(vha, fcport, 0);
                if (rval == QLA_NOT_LOGGED_IN) {
                        fcport->flags &= ~FCF_ASYNC_SENT;
                        fcport->flags |= FCF_LOGIN_NEEDED;
                        set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
                        break;
                }

                if (rval != QLA_SUCCESS) {
                        qla2x00_post_async_logout_work(vha, fcport, NULL);
                        qla2x00_post_async_login_work(vha, fcport, NULL);
                        break;
                }
                if (fcport->flags & FCF_FCP2_DEVICE) {
                        qla2x00_post_async_adisc_work(vha, fcport, data);
                        break;
                }
                qla2x00_update_fcport(vha, fcport);
                break;
        case MBS_COMMAND_ERROR:
                fcport->flags &= ~FCF_ASYNC_SENT;
                if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
                        set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
                else
                        qla2x00_mark_device_lost(vha, fcport, 1, 0);
                break;
        case MBS_PORT_ID_USED:
                fcport->loop_id = data[1];
                qla2x00_post_async_logout_work(vha, fcport, NULL);
                qla2x00_post_async_login_work(vha, fcport, NULL);
                break;
        case MBS_LOOP_ID_USED:
                fcport->loop_id++;
                rval = qla2x00_find_new_loop_id(vha, fcport);
                if (rval != QLA_SUCCESS) {
                        fcport->flags &= ~FCF_ASYNC_SENT;
                        qla2x00_mark_device_lost(vha, fcport, 1, 0);
                        break;
                }
                qla2x00_post_async_login_work(vha, fcport, NULL);
                break;
        }
        return;
}

void
qla2x00_async_logout_done(struct scsi_qla_host *vha, fc_port_t *fcport,
    uint16_t *data)
{
        qla2x00_mark_device_lost(vha, fcport, 1, 0);
        return;
}

void
qla2x00_async_adisc_done(struct scsi_qla_host *vha, fc_port_t *fcport,
    uint16_t *data)
{
        if (data[0] == MBS_COMMAND_COMPLETE) {
                qla2x00_update_fcport(vha, fcport);

                return;
        }

        /* Retry login. */
        fcport->flags &= ~FCF_ASYNC_SENT;
        if (data[1] & QLA_LOGIO_LOGIN_RETRIED)
                set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
        else
                qla2x00_mark_device_lost(vha, fcport, 1, 0);

        return;
}

/****************************************************************************/
/*                QLogic ISP2x00 Hardware Support Functions.                */
/****************************************************************************/

static int
qla83xx_nic_core_fw_load(scsi_qla_host_t *vha)
{
        int rval = QLA_SUCCESS;
        struct qla_hw_data *ha = vha->hw;
        uint32_t idc_major_ver, idc_minor_ver;
        uint16_t config[4];

        qla83xx_idc_lock(vha, 0);

        /* SV: TODO: Assign initialization timeout from
         * flash-info / other param
         */
        ha->fcoe_dev_init_timeout = QLA83XX_IDC_INITIALIZATION_TIMEOUT;
        ha->fcoe_reset_timeout = QLA83XX_IDC_RESET_ACK_TIMEOUT;

        /* Set our fcoe function presence */
        if (__qla83xx_set_drv_presence(vha) != QLA_SUCCESS) {
                ql_dbg(ql_dbg_p3p, vha, 0xb077,
                    "Error while setting DRV-Presence.\n");
                rval = QLA_FUNCTION_FAILED;
                goto exit;
        }

        /* Decide the reset ownership */
        qla83xx_reset_ownership(vha);

        /*
         * On first protocol driver load:
         * Init-Owner: Set IDC-Major-Version and Clear IDC-Lock-Recovery
         * register.
         * Others: Check compatibility with current IDC Major version.
         */
        qla83xx_rd_reg(vha, QLA83XX_IDC_MAJOR_VERSION, &idc_major_ver);
        if (ha->flags.nic_core_reset_owner) {
                /* Set IDC Major version */
                idc_major_ver = QLA83XX_SUPP_IDC_MAJOR_VERSION;
                qla83xx_wr_reg(vha, QLA83XX_IDC_MAJOR_VERSION, idc_major_ver);

                /* Clearing IDC-Lock-Recovery register */
                qla83xx_wr_reg(vha, QLA83XX_IDC_LOCK_RECOVERY, 0);
        } else if (idc_major_ver != QLA83XX_SUPP_IDC_MAJOR_VERSION) {
                /*
                 * Clear further IDC participation if we are not compatible with
                 * the current IDC Major Version.
                 */
                ql_log(ql_log_warn, vha, 0xb07d,
                    "Failing load, idc_major_ver=%d, expected_major_ver=%d.\n",
                    idc_major_ver, QLA83XX_SUPP_IDC_MAJOR_VERSION);
                __qla83xx_clear_drv_presence(vha);
                rval = QLA_FUNCTION_FAILED;
                goto exit;
        }
        /* Each function sets its supported Minor version. */
        qla83xx_rd_reg(vha, QLA83XX_IDC_MINOR_VERSION, &idc_minor_ver);
        idc_minor_ver |= (QLA83XX_SUPP_IDC_MINOR_VERSION << (ha->portnum * 2));
        qla83xx_wr_reg(vha, QLA83XX_IDC_MINOR_VERSION, idc_minor_ver);

        if (ha->flags.nic_core_reset_owner) {
                memset(config, 0, sizeof(config));
                if (!qla81xx_get_port_config(vha, config))
                        qla83xx_wr_reg(vha, QLA83XX_IDC_DEV_STATE,
                            QLA8XXX_DEV_READY);
        }

        rval = qla83xx_idc_state_handler(vha);

exit:
        qla83xx_idc_unlock(vha, 0);

        return rval;
}

/*
* qla2x00_initialize_adapter
*      Initialize board.
*
* Input:
*      ha = adapter block pointer.
*
* Returns:
*      0 = success
*/
int
qla2x00_initialize_adapter(scsi_qla_host_t *vha)
{
        int     rval;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        /* Clear adapter flags. */
        vha->flags.online = 0;
        ha->flags.chip_reset_done = 0;
        vha->flags.reset_active = 0;
        ha->flags.pci_channel_io_perm_failure = 0;
        ha->flags.eeh_busy = 0;
        ha->thermal_support = THERMAL_SUPPORT_I2C|THERMAL_SUPPORT_ISP;
        atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
        atomic_set(&vha->loop_state, LOOP_DOWN);
        vha->device_flags = DFLG_NO_CABLE;
        vha->dpc_flags = 0;
        vha->flags.management_server_logged_in = 0;
        vha->marker_needed = 0;
        ha->isp_abort_cnt = 0;
        ha->beacon_blink_led = 0;

        set_bit(0, ha->req_qid_map);
        set_bit(0, ha->rsp_qid_map);

        ql_dbg(ql_dbg_init, vha, 0x0040,
            "Configuring PCI space...\n");
        rval = ha->isp_ops->pci_config(vha);
        if (rval) {
                ql_log(ql_log_warn, vha, 0x0044,
                    "Unable to configure PCI space.\n");
                return (rval);
        }

        ha->isp_ops->reset_chip(vha);

        rval = qla2xxx_get_flash_info(vha);
        if (rval) {
                ql_log(ql_log_fatal, vha, 0x004f,
                    "Unable to validate FLASH data.\n");
                return (rval);
        }

        ha->isp_ops->get_flash_version(vha, req->ring);
        ql_dbg(ql_dbg_init, vha, 0x0061,
            "Configure NVRAM parameters...\n");

        ha->isp_ops->nvram_config(vha);

        if (ha->flags.disable_serdes) {
                /* Mask HBA via NVRAM settings? */
                ql_log(ql_log_info, vha, 0x0077,
                    "Masking HBA WWPN "
                    "%02x%02x%02x%02x%02x%02x%02x%02x (via NVRAM).\n",
                    vha->port_name[0], vha->port_name[1],
                    vha->port_name[2], vha->port_name[3],
                    vha->port_name[4], vha->port_name[5],
                    vha->port_name[6], vha->port_name[7]);
                return QLA_FUNCTION_FAILED;
        }

        ql_dbg(ql_dbg_init, vha, 0x0078,
            "Verifying loaded RISC code...\n");

        if (qla2x00_isp_firmware(vha) != QLA_SUCCESS) {
                rval = ha->isp_ops->chip_diag(vha);
                if (rval)
                        return (rval);
                rval = qla2x00_setup_chip(vha);
                if (rval)
                        return (rval);
        }

        if (IS_QLA84XX(ha)) {
                ha->cs84xx = qla84xx_get_chip(vha);
                if (!ha->cs84xx) {
                        ql_log(ql_log_warn, vha, 0x00d0,
                            "Unable to configure ISP84XX.\n");
                        return QLA_FUNCTION_FAILED;
                }
        }

        if (qla_ini_mode_enabled(vha))
                rval = qla2x00_init_rings(vha);

        ha->flags.chip_reset_done = 1;

        if (rval == QLA_SUCCESS && IS_QLA84XX(ha)) {
                /* Issue verify 84xx FW IOCB to complete 84xx initialization */
                rval = qla84xx_init_chip(vha);
                if (rval != QLA_SUCCESS) {
                        ql_log(ql_log_warn, vha, 0x00d4,
                            "Unable to initialize ISP84XX.\n");
                qla84xx_put_chip(vha);
                }
        }

        /* Load the NIC Core f/w if we are the first protocol driver. */
        if (IS_QLA8031(ha)) {
                rval = qla83xx_nic_core_fw_load(vha);
                if (rval)
                        ql_log(ql_log_warn, vha, 0x0124,
                            "Error in initializing NIC Core f/w.\n");
        }

        if (IS_QLA24XX_TYPE(ha) || IS_QLA25XX(ha))
                qla24xx_read_fcp_prio_cfg(vha);

        return (rval);
}

/**
 * qla2100_pci_config() - Setup ISP21xx PCI configuration registers.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla2100_pci_config(scsi_qla_host_t *vha)
{
        uint16_t w;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        pci_set_master(ha->pdev);
        pci_try_set_mwi(ha->pdev);

        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
        w |= (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
        pci_write_config_word(ha->pdev, PCI_COMMAND, w);

        pci_disable_rom(ha->pdev);

        /* Get PCI bus information. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return QLA_SUCCESS;
}

/**
 * qla2300_pci_config() - Setup ISP23xx PCI configuration registers.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla2300_pci_config(scsi_qla_host_t *vha)
{
        uint16_t        w;
        unsigned long   flags = 0;
        uint32_t        cnt;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        pci_set_master(ha->pdev);
        pci_try_set_mwi(ha->pdev);

        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
        w |= (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);

        if (IS_QLA2322(ha) || IS_QLA6322(ha))
                w &= ~PCI_COMMAND_INTX_DISABLE;
        pci_write_config_word(ha->pdev, PCI_COMMAND, w);

        /*
         * If this is a 2300 card and not 2312, reset the
         * COMMAND_INVALIDATE due to a bug in the 2300. Unfortunately,
         * the 2310 also reports itself as a 2300 so we need to get the
         * fb revision level -- a 6 indicates it really is a 2300 and
         * not a 2310.
         */
        if (IS_QLA2300(ha)) {
                spin_lock_irqsave(&ha->hardware_lock, flags);

                /* Pause RISC. */
                WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
                for (cnt = 0; cnt < 30000; cnt++) {
                        if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) != 0)
                                break;

                        udelay(10);
                }

                /* Select FPM registers. */
                WRT_REG_WORD(&reg->ctrl_status, 0x20);
                RD_REG_WORD(&reg->ctrl_status);

                /* Get the fb rev level */
                ha->fb_rev = RD_FB_CMD_REG(ha, reg);

                if (ha->fb_rev == FPM_2300)
                        pci_clear_mwi(ha->pdev);

                /* Deselect FPM registers. */
                WRT_REG_WORD(&reg->ctrl_status, 0x0);
                RD_REG_WORD(&reg->ctrl_status);

                /* Release RISC module. */
                WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
                for (cnt = 0; cnt < 30000; cnt++) {
                        if ((RD_REG_WORD(&reg->hccr) & HCCR_RISC_PAUSE) == 0)
                                break;

                        udelay(10);
                }

                spin_unlock_irqrestore(&ha->hardware_lock, flags);
        }

        pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);

        pci_disable_rom(ha->pdev);

        /* Get PCI bus information. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->pci_attr = RD_REG_WORD(&reg->ctrl_status);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return QLA_SUCCESS;
}

/**
 * qla24xx_pci_config() - Setup ISP24xx PCI configuration registers.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla24xx_pci_config(scsi_qla_host_t *vha)
{
        uint16_t w;
        unsigned long flags = 0;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        pci_set_master(ha->pdev);
        pci_try_set_mwi(ha->pdev);

        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
        w |= (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
        w &= ~PCI_COMMAND_INTX_DISABLE;
        pci_write_config_word(ha->pdev, PCI_COMMAND, w);

        pci_write_config_byte(ha->pdev, PCI_LATENCY_TIMER, 0x80);

        /* PCI-X -- adjust Maximum Memory Read Byte Count (2048). */
        if (pci_find_capability(ha->pdev, PCI_CAP_ID_PCIX))
                pcix_set_mmrbc(ha->pdev, 2048);

        /* PCIe -- adjust Maximum Read Request Size (2048). */
        if (pci_is_pcie(ha->pdev))
                pcie_set_readrq(ha->pdev, 4096);

        pci_disable_rom(ha->pdev);

        ha->chip_revision = ha->pdev->revision;

        /* Get PCI bus information. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        ha->pci_attr = RD_REG_DWORD(&reg->ctrl_status);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return QLA_SUCCESS;
}

/**
 * qla25xx_pci_config() - Setup ISP25xx PCI configuration registers.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla25xx_pci_config(scsi_qla_host_t *vha)
{
        uint16_t w;
        struct qla_hw_data *ha = vha->hw;

        pci_set_master(ha->pdev);
        pci_try_set_mwi(ha->pdev);

        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
        w |= (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
        w &= ~PCI_COMMAND_INTX_DISABLE;
        pci_write_config_word(ha->pdev, PCI_COMMAND, w);

        /* PCIe -- adjust Maximum Read Request Size (2048). */
        if (pci_is_pcie(ha->pdev))
                pcie_set_readrq(ha->pdev, 4096);

        pci_disable_rom(ha->pdev);

        ha->chip_revision = ha->pdev->revision;

        return QLA_SUCCESS;
}

/**
 * qla2x00_isp_firmware() - Choose firmware image.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_isp_firmware(scsi_qla_host_t *vha)
{
        int  rval;
        uint16_t loop_id, topo, sw_cap;
        uint8_t domain, area, al_pa;
        struct qla_hw_data *ha = vha->hw;

        /* Assume loading risc code */
        rval = QLA_FUNCTION_FAILED;

        if (ha->flags.disable_risc_code_load) {
                ql_log(ql_log_info, vha, 0x0079, "RISC CODE NOT loaded.\n");

                /* Verify checksum of loaded RISC code. */
                rval = qla2x00_verify_checksum(vha, ha->fw_srisc_address);
                if (rval == QLA_SUCCESS) {
                        /* And, verify we are not in ROM code. */
                        rval = qla2x00_get_adapter_id(vha, &loop_id, &al_pa,
                            &area, &domain, &topo, &sw_cap);
                }
        }

        if (rval)
                ql_dbg(ql_dbg_init, vha, 0x007a,
                    "**** Load RISC code ****.\n");

        return (rval);
}

/**
 * qla2x00_reset_chip() - Reset ISP chip.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
void
qla2x00_reset_chip(scsi_qla_host_t *vha)
{
        unsigned long   flags = 0;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        uint32_t        cnt;
        uint16_t        cmd;

        if (unlikely(pci_channel_offline(ha->pdev)))
                return;

        ha->isp_ops->disable_intrs(ha);

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Turn off master enable */
        cmd = 0;
        pci_read_config_word(ha->pdev, PCI_COMMAND, &cmd);
        cmd &= ~PCI_COMMAND_MASTER;
        pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);

        if (!IS_QLA2100(ha)) {
                /* Pause RISC. */
                WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
                if (IS_QLA2200(ha) || IS_QLA2300(ha)) {
                        for (cnt = 0; cnt < 30000; cnt++) {
                                if ((RD_REG_WORD(&reg->hccr) &
                                    HCCR_RISC_PAUSE) != 0)
                                        break;
                                udelay(100);
                        }
                } else {
                        RD_REG_WORD(&reg->hccr);        /* PCI Posting. */
                        udelay(10);
                }

                /* Select FPM registers. */
                WRT_REG_WORD(&reg->ctrl_status, 0x20);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */

                /* FPM Soft Reset. */
                WRT_REG_WORD(&reg->fpm_diag_config, 0x100);
                RD_REG_WORD(&reg->fpm_diag_config);     /* PCI Posting. */

                /* Toggle Fpm Reset. */
                if (!IS_QLA2200(ha)) {
                        WRT_REG_WORD(&reg->fpm_diag_config, 0x0);
                        RD_REG_WORD(&reg->fpm_diag_config); /* PCI Posting. */
                }

                /* Select frame buffer registers. */
                WRT_REG_WORD(&reg->ctrl_status, 0x10);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */

                /* Reset frame buffer FIFOs. */
                if (IS_QLA2200(ha)) {
                        WRT_FB_CMD_REG(ha, reg, 0xa000);
                        RD_FB_CMD_REG(ha, reg);         /* PCI Posting. */
                } else {
                        WRT_FB_CMD_REG(ha, reg, 0x00fc);

                        /* Read back fb_cmd until zero or 3 seconds max */
                        for (cnt = 0; cnt < 3000; cnt++) {
                                if ((RD_FB_CMD_REG(ha, reg) & 0xff) == 0)
                                        break;
                                udelay(100);
                        }
                }

                /* Select RISC module registers. */
                WRT_REG_WORD(&reg->ctrl_status, 0);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */

                /* Reset RISC processor. */
                WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
                RD_REG_WORD(&reg->hccr);                /* PCI Posting. */

                /* Release RISC processor. */
                WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
                RD_REG_WORD(&reg->hccr);                /* PCI Posting. */
        }

        WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
        WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);

        /* Reset ISP chip. */
        WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);

        /* Wait for RISC to recover from reset. */
        if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
                /*
                 * It is necessary to for a delay here since the card doesn't
                 * respond to PCI reads during a reset. On some architectures
                 * this will result in an MCA.
                 */
                udelay(20);
                for (cnt = 30000; cnt; cnt--) {
                        if ((RD_REG_WORD(&reg->ctrl_status) &
                            CSR_ISP_SOFT_RESET) == 0)
                                break;
                        udelay(100);
                }
        } else
                udelay(10);

        /* Reset RISC processor. */
        WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);

        WRT_REG_WORD(&reg->semaphore, 0);

        /* Release RISC processor. */
        WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);
        RD_REG_WORD(&reg->hccr);                        /* PCI Posting. */

        if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
                for (cnt = 0; cnt < 30000; cnt++) {
                        if (RD_MAILBOX_REG(ha, reg, 0) != MBS_BUSY)
                                break;

                        udelay(100);
                }
        } else
                udelay(100);

        /* Turn on master enable */
        cmd |= PCI_COMMAND_MASTER;
        pci_write_config_word(ha->pdev, PCI_COMMAND, cmd);

        /* Disable RISC pause on FPM parity error. */
        if (!IS_QLA2100(ha)) {
                WRT_REG_WORD(&reg->hccr, HCCR_DISABLE_PARITY_PAUSE);
                RD_REG_WORD(&reg->hccr);                /* PCI Posting. */
        }

        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

/**
 * qla81xx_reset_mpi() - Reset's MPI FW via Write MPI Register MBC.
 *
 * Returns 0 on success.
 */
static int
qla81xx_reset_mpi(scsi_qla_host_t *vha)

{
        uint16_t mb[4] = {0x1010, 0, 1, 0};

        if (!IS_QLA81XX(vha->hw))
                return QLA_SUCCESS;

        return qla81xx_write_mpi_register(vha, mb);
}

/**
 * qla24xx_reset_risc() - Perform full reset of ISP24xx RISC.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
static inline void
qla24xx_reset_risc(scsi_qla_host_t *vha)
{
        unsigned long flags = 0;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
        uint32_t cnt, d2;
        uint16_t wd;
        static int abts_cnt; /* ISP abort retry counts */

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Reset RISC. */
        WRT_REG_DWORD(&reg->ctrl_status, CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
        for (cnt = 0; cnt < 30000; cnt++) {
                if ((RD_REG_DWORD(&reg->ctrl_status) & CSRX_DMA_ACTIVE) == 0)
                        break;

                udelay(10);
        }

        WRT_REG_DWORD(&reg->ctrl_status,
            CSRX_ISP_SOFT_RESET|CSRX_DMA_SHUTDOWN|MWB_4096_BYTES);
        pci_read_config_word(ha->pdev, PCI_COMMAND, &wd);

        udelay(100);
        /* Wait for firmware to complete NVRAM accesses. */
        d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
        for (cnt = 10000 ; cnt && d2; cnt--) {
                udelay(5);
                d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
                barrier();
        }

        /* Wait for soft-reset to complete. */
        d2 = RD_REG_DWORD(&reg->ctrl_status);
        for (cnt = 6000000 ; cnt && (d2 & CSRX_ISP_SOFT_RESET); cnt--) {
                udelay(5);
                d2 = RD_REG_DWORD(&reg->ctrl_status);
                barrier();
        }

        /* If required, do an MPI FW reset now */
        if (test_and_clear_bit(MPI_RESET_NEEDED, &vha->dpc_flags)) {
                if (qla81xx_reset_mpi(vha) != QLA_SUCCESS) {
                        if (++abts_cnt < 5) {
                                set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                                set_bit(MPI_RESET_NEEDED, &vha->dpc_flags);
                        } else {
                                /*
                                 * We exhausted the ISP abort retries. We have to
                                 * set the board offline.
                                 */
                                abts_cnt = 0;
                                vha->flags.online = 0;
                        }
                }
        }

        WRT_REG_DWORD(&reg->hccr, HCCRX_SET_RISC_RESET);
        RD_REG_DWORD(&reg->hccr);

        WRT_REG_DWORD(&reg->hccr, HCCRX_REL_RISC_PAUSE);
        RD_REG_DWORD(&reg->hccr);

        WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_RESET);
        RD_REG_DWORD(&reg->hccr);

        d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
        for (cnt = 6000000 ; cnt && d2; cnt--) {
                udelay(5);
                d2 = (uint32_t) RD_REG_WORD(&reg->mailbox0);
                barrier();
        }

        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        if (IS_NOPOLLING_TYPE(ha))
                ha->isp_ops->enable_intrs(ha);
}

static void
qla25xx_read_risc_sema_reg(scsi_qla_host_t *vha, uint32_t *data)
{
        struct device_reg_24xx __iomem *reg = &vha->hw->iobase->isp24;

        WRT_REG_DWORD(&reg->iobase_addr, RISC_REGISTER_BASE_OFFSET);
        *data = RD_REG_DWORD(&reg->iobase_window + RISC_REGISTER_WINDOW_OFFET);

}

static void
qla25xx_write_risc_sema_reg(scsi_qla_host_t *vha, uint32_t data)
{
        struct device_reg_24xx __iomem *reg = &vha->hw->iobase->isp24;

        WRT_REG_DWORD(&reg->iobase_addr, RISC_REGISTER_BASE_OFFSET);
        WRT_REG_DWORD(&reg->iobase_window + RISC_REGISTER_WINDOW_OFFET, data);
}

static void
qla25xx_manipulate_risc_semaphore(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        uint32_t wd32 = 0;
        uint delta_msec = 100;
        uint elapsed_msec = 0;
        uint timeout_msec;
        ulong n;

        if (!IS_QLA25XX(ha) && !IS_QLA2031(ha))
                return;

attempt:
        timeout_msec = TIMEOUT_SEMAPHORE;
        n = timeout_msec / delta_msec;
        while (n--) {
                qla25xx_write_risc_sema_reg(vha, RISC_SEMAPHORE_SET);
                qla25xx_read_risc_sema_reg(vha, &wd32);
                if (wd32 & RISC_SEMAPHORE)
                        break;
                msleep(delta_msec);
                elapsed_msec += delta_msec;
                if (elapsed_msec > TIMEOUT_TOTAL_ELAPSED)
                        goto force;
        }

        if (!(wd32 & RISC_SEMAPHORE))
                goto force;

        if (!(wd32 & RISC_SEMAPHORE_FORCE))
                goto acquired;

        qla25xx_write_risc_sema_reg(vha, RISC_SEMAPHORE_CLR);
        timeout_msec = TIMEOUT_SEMAPHORE_FORCE;
        n = timeout_msec / delta_msec;
        while (n--) {
                qla25xx_read_risc_sema_reg(vha, &wd32);
                if (!(wd32 & RISC_SEMAPHORE_FORCE))
                        break;
                msleep(delta_msec);
                elapsed_msec += delta_msec;
                if (elapsed_msec > TIMEOUT_TOTAL_ELAPSED)
                        goto force;
        }

        if (wd32 & RISC_SEMAPHORE_FORCE)
                qla25xx_write_risc_sema_reg(vha, RISC_SEMAPHORE_FORCE_CLR);

        goto attempt;

force:
        qla25xx_write_risc_sema_reg(vha, RISC_SEMAPHORE_FORCE_SET);

acquired:
        return;
}

/**
 * qla24xx_reset_chip() - Reset ISP24xx chip.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
void
qla24xx_reset_chip(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;

        if (pci_channel_offline(ha->pdev) &&
            ha->flags.pci_channel_io_perm_failure) {
                return;
        }

        ha->isp_ops->disable_intrs(ha);

        qla25xx_manipulate_risc_semaphore(vha);

        /* Perform RISC reset. */
        qla24xx_reset_risc(vha);
}

/**
 * qla2x00_chip_diag() - Test chip for proper operation.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla2x00_chip_diag(scsi_qla_host_t *vha)
{
        int             rval;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        unsigned long   flags = 0;
        uint16_t        data;
        uint32_t        cnt;
        uint16_t        mb[5];
        struct req_que *req = ha->req_q_map[0];

        /* Assume a failed state */
        rval = QLA_FUNCTION_FAILED;

        ql_dbg(ql_dbg_init, vha, 0x007b,
            "Testing device at %lx.\n", (u_long)&reg->flash_address);

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Reset ISP chip. */
        WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);

        /*
         * We need to have a delay here since the card will not respond while
         * in reset causing an MCA on some architectures.
         */
        udelay(20);
        data = qla2x00_debounce_register(&reg->ctrl_status);
        for (cnt = 6000000 ; cnt && (data & CSR_ISP_SOFT_RESET); cnt--) {
                udelay(5);
                data = RD_REG_WORD(&reg->ctrl_status);
                barrier();
        }

        if (!cnt)
                goto chip_diag_failed;

        ql_dbg(ql_dbg_init, vha, 0x007c,
            "Reset register cleared by chip reset.\n");

        /* Reset RISC processor. */
        WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
        WRT_REG_WORD(&reg->hccr, HCCR_RELEASE_RISC);

        /* Workaround for QLA2312 PCI parity error */
        if (IS_QLA2100(ha) || IS_QLA2200(ha) || IS_QLA2300(ha)) {
                data = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 0));
                for (cnt = 6000000; cnt && (data == MBS_BUSY); cnt--) {
                        udelay(5);
                        data = RD_MAILBOX_REG(ha, reg, 0);
                        barrier();
                }
        } else
                udelay(10);

        if (!cnt)
                goto chip_diag_failed;

        /* Check product ID of chip */
        ql_dbg(ql_dbg_init, vha, 0x007d, "Checking product Id of chip.\n");

        mb[1] = RD_MAILBOX_REG(ha, reg, 1);
        mb[2] = RD_MAILBOX_REG(ha, reg, 2);
        mb[3] = RD_MAILBOX_REG(ha, reg, 3);
        mb[4] = qla2x00_debounce_register(MAILBOX_REG(ha, reg, 4));
        if (mb[1] != PROD_ID_1 || (mb[2] != PROD_ID_2 && mb[2] != PROD_ID_2a) ||
            mb[3] != PROD_ID_3) {
                ql_log(ql_log_warn, vha, 0x0062,
                    "Wrong product ID = 0x%x,0x%x,0x%x.\n",
                    mb[1], mb[2], mb[3]);

                goto chip_diag_failed;
        }
        ha->product_id[0] = mb[1];
        ha->product_id[1] = mb[2];
        ha->product_id[2] = mb[3];
        ha->product_id[3] = mb[4];

        /* Adjust fw RISC transfer size */
        if (req->length > 1024)
                ha->fw_transfer_size = REQUEST_ENTRY_SIZE * 1024;
        else
                ha->fw_transfer_size = REQUEST_ENTRY_SIZE *
                    req->length;

        if (IS_QLA2200(ha) &&
            RD_MAILBOX_REG(ha, reg, 7) == QLA2200A_RISC_ROM_VER) {
                /* Limit firmware transfer size with a 2200A */
                ql_dbg(ql_dbg_init, vha, 0x007e, "Found QLA2200A Chip.\n");

                ha->device_type |= DT_ISP2200A;
                ha->fw_transfer_size = 128;
        }

        /* Wrap Incoming Mailboxes Test. */
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        ql_dbg(ql_dbg_init, vha, 0x007f, "Checking mailboxes.\n");
        rval = qla2x00_mbx_reg_test(vha);
        if (rval)
                ql_log(ql_log_warn, vha, 0x0080,
                    "Failed mailbox send register test.\n");
        else
                /* Flag a successful rval */
                rval = QLA_SUCCESS;
        spin_lock_irqsave(&ha->hardware_lock, flags);

chip_diag_failed:
        if (rval)
                ql_log(ql_log_info, vha, 0x0081,
                    "Chip diagnostics **** FAILED ****.\n");

        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return (rval);
}

/**
 * qla24xx_chip_diag() - Test ISP24xx for proper operation.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
int
qla24xx_chip_diag(scsi_qla_host_t *vha)
{
        int rval;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        if (IS_QLA82XX(ha))
                return QLA_SUCCESS;

        ha->fw_transfer_size = REQUEST_ENTRY_SIZE * req->length;

        rval = qla2x00_mbx_reg_test(vha);
        if (rval) {
                ql_log(ql_log_warn, vha, 0x0082,
                    "Failed mailbox send register test.\n");
        } else {
                /* Flag a successful rval */
                rval = QLA_SUCCESS;
        }

        return rval;
}

void
qla2x00_alloc_fw_dump(scsi_qla_host_t *vha)
{
        int rval;
        uint32_t dump_size, fixed_size, mem_size, req_q_size, rsp_q_size,
            eft_size, fce_size, mq_size;
        dma_addr_t tc_dma;
        void *tc;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];
        struct rsp_que *rsp = ha->rsp_q_map[0];

        if (ha->fw_dump) {
                ql_dbg(ql_dbg_init, vha, 0x00bd,
                    "Firmware dump already allocated.\n");
                return;
        }

        ha->fw_dumped = 0;
        fixed_size = mem_size = eft_size = fce_size = mq_size = 0;
        if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
                fixed_size = sizeof(struct qla2100_fw_dump);
        } else if (IS_QLA23XX(ha)) {
                fixed_size = offsetof(struct qla2300_fw_dump, data_ram);
                mem_size = (ha->fw_memory_size - 0x11000 + 1) *
                    sizeof(uint16_t);
        } else if (IS_FWI2_CAPABLE(ha)) {
                if (IS_QLA83XX(ha))
                        fixed_size = offsetof(struct qla83xx_fw_dump, ext_mem);
                else if (IS_QLA81XX(ha))
                        fixed_size = offsetof(struct qla81xx_fw_dump, ext_mem);
                else if (IS_QLA25XX(ha))
                        fixed_size = offsetof(struct qla25xx_fw_dump, ext_mem);
                else
                        fixed_size = offsetof(struct qla24xx_fw_dump, ext_mem);
                mem_size = (ha->fw_memory_size - 0x100000 + 1) *
                    sizeof(uint32_t);
                if (ha->mqenable) {
                        if (!IS_QLA83XX(ha))
                                mq_size = sizeof(struct qla2xxx_mq_chain);
                        /*
                         * Allocate maximum buffer size for all queues.
                         * Resizing must be done at end-of-dump processing.
                         */
                        mq_size += ha->max_req_queues *
                            (req->length * sizeof(request_t));
                        mq_size += ha->max_rsp_queues *
                            (rsp->length * sizeof(response_t));
                }
                if (ha->tgt.atio_ring)
                        mq_size += ha->tgt.atio_q_length * sizeof(request_t);
                /* Allocate memory for Fibre Channel Event Buffer. */
                if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha))
                        goto try_eft;

                tc = dma_alloc_coherent(&ha->pdev->dev, FCE_SIZE, &tc_dma,
                    GFP_KERNEL);
                if (!tc) {
                        ql_log(ql_log_warn, vha, 0x00be,
                            "Unable to allocate (%d KB) for FCE.\n",
                            FCE_SIZE / 1024);
                        goto try_eft;
                }

                memset(tc, 0, FCE_SIZE);
                rval = qla2x00_enable_fce_trace(vha, tc_dma, FCE_NUM_BUFFERS,
                    ha->fce_mb, &ha->fce_bufs);
                if (rval) {
                        ql_log(ql_log_warn, vha, 0x00bf,
                            "Unable to initialize FCE (%d).\n", rval);
                        dma_free_coherent(&ha->pdev->dev, FCE_SIZE, tc,
                            tc_dma);
                        ha->flags.fce_enabled = 0;
                        goto try_eft;
                }
                ql_dbg(ql_dbg_init, vha, 0x00c0,
                    "Allocate (%d KB) for FCE...\n", FCE_SIZE / 1024);

                fce_size = sizeof(struct qla2xxx_fce_chain) + FCE_SIZE;
                ha->flags.fce_enabled = 1;
                ha->fce_dma = tc_dma;
                ha->fce = tc;
try_eft:
                /* Allocate memory for Extended Trace Buffer. */
                tc = dma_alloc_coherent(&ha->pdev->dev, EFT_SIZE, &tc_dma,
                    GFP_KERNEL);
                if (!tc) {
                        ql_log(ql_log_warn, vha, 0x00c1,
                            "Unable to allocate (%d KB) for EFT.\n",
                            EFT_SIZE / 1024);
                        goto cont_alloc;
                }

                memset(tc, 0, EFT_SIZE);
                rval = qla2x00_enable_eft_trace(vha, tc_dma, EFT_NUM_BUFFERS);
                if (rval) {
                        ql_log(ql_log_warn, vha, 0x00c2,
                            "Unable to initialize EFT (%d).\n", rval);
                        dma_free_coherent(&ha->pdev->dev, EFT_SIZE, tc,
                            tc_dma);
                        goto cont_alloc;
                }
                ql_dbg(ql_dbg_init, vha, 0x00c3,
                    "Allocated (%d KB) EFT ...\n", EFT_SIZE / 1024);

                eft_size = EFT_SIZE;
                ha->eft_dma = tc_dma;
                ha->eft = tc;
        }
cont_alloc:
        req_q_size = req->length * sizeof(request_t);
        rsp_q_size = rsp->length * sizeof(response_t);

        dump_size = offsetof(struct qla2xxx_fw_dump, isp);
        dump_size += fixed_size + mem_size + req_q_size + rsp_q_size + eft_size;
        ha->chain_offset = dump_size;
        dump_size += mq_size + fce_size;

        ha->fw_dump = vmalloc(dump_size);
        if (!ha->fw_dump) {
                ql_log(ql_log_warn, vha, 0x00c4,
                    "Unable to allocate (%d KB) for firmware dump.\n",
                    dump_size / 1024);

                if (ha->fce) {
                        dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
                            ha->fce_dma);
                        ha->fce = NULL;
                        ha->fce_dma = 0;
                }

                if (ha->eft) {
                        dma_free_coherent(&ha->pdev->dev, eft_size, ha->eft,
                            ha->eft_dma);
                        ha->eft = NULL;
                        ha->eft_dma = 0;
                }
                return;
        }
        ql_dbg(ql_dbg_init, vha, 0x00c5,
            "Allocated (%d KB) for firmware dump.\n", dump_size / 1024);

        ha->fw_dump_len = dump_size;
        ha->fw_dump->signature[0] = 'Q';
        ha->fw_dump->signature[1] = 'L';
        ha->fw_dump->signature[2] = 'G';
        ha->fw_dump->signature[3] = 'C';
        ha->fw_dump->version = __constant_htonl(1);

        ha->fw_dump->fixed_size = htonl(fixed_size);
        ha->fw_dump->mem_size = htonl(mem_size);
        ha->fw_dump->req_q_size = htonl(req_q_size);
        ha->fw_dump->rsp_q_size = htonl(rsp_q_size);

        ha->fw_dump->eft_size = htonl(eft_size);
        ha->fw_dump->eft_addr_l = htonl(LSD(ha->eft_dma));
        ha->fw_dump->eft_addr_h = htonl(MSD(ha->eft_dma));

        ha->fw_dump->header_size =
            htonl(offsetof(struct qla2xxx_fw_dump, isp));
}

static int
qla81xx_mpi_sync(scsi_qla_host_t *vha)
{
#define MPS_MASK        0xe0
        int rval;
        uint16_t dc;
        uint32_t dw;

        if (!IS_QLA81XX(vha->hw))
                return QLA_SUCCESS;

        rval = qla2x00_write_ram_word(vha, 0x7c00, 1);
        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x0105,
                    "Unable to acquire semaphore.\n");
                goto done;
        }

        pci_read_config_word(vha->hw->pdev, 0x54, &dc);
        rval = qla2x00_read_ram_word(vha, 0x7a15, &dw);
        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x0067, "Unable to read sync.\n");
                goto done_release;
        }

        dc &= MPS_MASK;
        if (dc == (dw & MPS_MASK))
                goto done_release;

        dw &= ~MPS_MASK;
        dw |= dc;
        rval = qla2x00_write_ram_word(vha, 0x7a15, dw);
        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x0114, "Unable to gain sync.\n");
        }

done_release:
        rval = qla2x00_write_ram_word(vha, 0x7c00, 0);
        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x006d,
                    "Unable to release semaphore.\n");
        }

done:
        return rval;
}

int
qla2x00_alloc_outstanding_cmds(struct qla_hw_data *ha, struct req_que *req)
{
        /* Don't try to reallocate the array */
        if (req->outstanding_cmds)
                return QLA_SUCCESS;

        if (!IS_FWI2_CAPABLE(ha) || (ha->mqiobase &&
            (ql2xmultique_tag || ql2xmaxqueues > 1)))
                req->num_outstanding_cmds = DEFAULT_OUTSTANDING_COMMANDS;
        else {
                if (ha->fw_xcb_count <= ha->fw_iocb_count)
                        req->num_outstanding_cmds = ha->fw_xcb_count;
                else
                        req->num_outstanding_cmds = ha->fw_iocb_count;
        }

        req->outstanding_cmds = kzalloc(sizeof(srb_t *) *
            req->num_outstanding_cmds, GFP_KERNEL);

        if (!req->outstanding_cmds) {
                /*
                 * Try to allocate a minimal size just so we can get through
                 * initialization.
                 */
                req->num_outstanding_cmds = MIN_OUTSTANDING_COMMANDS;
                req->outstanding_cmds = kzalloc(sizeof(srb_t *) *
                    req->num_outstanding_cmds, GFP_KERNEL);

                if (!req->outstanding_cmds) {
                        ql_log(ql_log_fatal, NULL, 0x0126,
                            "Failed to allocate memory for "
                            "outstanding_cmds for req_que %p.\n", req);
                        req->num_outstanding_cmds = 0;
                        return QLA_FUNCTION_FAILED;
                }
        }

        return QLA_SUCCESS;
}

/**
 * qla2x00_setup_chip() - Load and start RISC firmware.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_setup_chip(scsi_qla_host_t *vha)
{
        int rval;
        uint32_t srisc_address = 0;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        unsigned long flags;
        uint16_t fw_major_version;

        if (IS_QLA82XX(ha)) {
                rval = ha->isp_ops->load_risc(vha, &srisc_address);
                if (rval == QLA_SUCCESS) {
                        qla2x00_stop_firmware(vha);
                        goto enable_82xx_npiv;
                } else
                        goto failed;
        }

        if (!IS_FWI2_CAPABLE(ha) && !IS_QLA2100(ha) && !IS_QLA2200(ha)) {
                /* Disable SRAM, Instruction RAM and GP RAM parity.  */
                spin_lock_irqsave(&ha->hardware_lock, flags);
                WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x0));
                RD_REG_WORD(&reg->hccr);
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
        }

        qla81xx_mpi_sync(vha);

        /* Load firmware sequences */
        rval = ha->isp_ops->load_risc(vha, &srisc_address);
        if (rval == QLA_SUCCESS) {
                ql_dbg(ql_dbg_init, vha, 0x00c9,
                    "Verifying Checksum of loaded RISC code.\n");

                rval = qla2x00_verify_checksum(vha, srisc_address);
                if (rval == QLA_SUCCESS) {
                        /* Start firmware execution. */
                        ql_dbg(ql_dbg_init, vha, 0x00ca,
                            "Starting firmware.\n");

                        rval = qla2x00_execute_fw(vha, srisc_address);
                        /* Retrieve firmware information. */
                        if (rval == QLA_SUCCESS) {
enable_82xx_npiv:
                                fw_major_version = ha->fw_major_version;
                                if (IS_QLA82XX(ha))
                                        qla82xx_check_md_needed(vha);
                                else
                                        rval = qla2x00_get_fw_version(vha);
                                if (rval != QLA_SUCCESS)
                                        goto failed;
                                ha->flags.npiv_supported = 0;
                                if (IS_QLA2XXX_MIDTYPE(ha) &&
                                         (ha->fw_attributes & BIT_2)) {
                                        ha->flags.npiv_supported = 1;
                                        if ((!ha->max_npiv_vports) ||
                                            ((ha->max_npiv_vports + 1) %
                                            MIN_MULTI_ID_FABRIC))
                                                ha->max_npiv_vports =
                                                    MIN_MULTI_ID_FABRIC - 1;
                                }
                                qla2x00_get_resource_cnts(vha, NULL,
                                    &ha->fw_xcb_count, NULL, &ha->fw_iocb_count,
                                    &ha->max_npiv_vports, NULL);

                                /*
                                 * Allocate the array of outstanding commands
                                 * now that we know the firmware resources.
                                 */
                                rval = qla2x00_alloc_outstanding_cmds(ha,
                                    vha->req);
                                if (rval != QLA_SUCCESS)
                                        goto failed;

                                if (!fw_major_version && ql2xallocfwdump
                                    && !IS_QLA82XX(ha))
                                        qla2x00_alloc_fw_dump(vha);
                        }
                } else {
                        ql_log(ql_log_fatal, vha, 0x00cd,
                            "ISP Firmware failed checksum.\n");
                        goto failed;
                }
        } else
                goto failed;

        if (!IS_FWI2_CAPABLE(ha) && !IS_QLA2100(ha) && !IS_QLA2200(ha)) {
                /* Enable proper parity. */
                spin_lock_irqsave(&ha->hardware_lock, flags);
                if (IS_QLA2300(ha))
                        /* SRAM parity */
                        WRT_REG_WORD(&reg->hccr, HCCR_ENABLE_PARITY + 0x1);
                else
                        /* SRAM, Instruction RAM and GP RAM parity */
                        WRT_REG_WORD(&reg->hccr, HCCR_ENABLE_PARITY + 0x7);
                RD_REG_WORD(&reg->hccr);
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
        }

        if (IS_QLA83XX(ha))
                goto skip_fac_check;

        if (rval == QLA_SUCCESS && IS_FAC_REQUIRED(ha)) {
                uint32_t size;

                rval = qla81xx_fac_get_sector_size(vha, &size);
                if (rval == QLA_SUCCESS) {
                        ha->flags.fac_supported = 1;
                        ha->fdt_block_size = size << 2;
                } else {
                        ql_log(ql_log_warn, vha, 0x00ce,
                            "Unsupported FAC firmware (%d.%02d.%02d).\n",
                            ha->fw_major_version, ha->fw_minor_version,
                            ha->fw_subminor_version);
skip_fac_check:
                        if (IS_QLA83XX(ha)) {
                                ha->flags.fac_supported = 0;
                                rval = QLA_SUCCESS;
                        }
                }
        }
failed:
        if (rval) {
                ql_log(ql_log_fatal, vha, 0x00cf,
                    "Setup chip ****FAILED****.\n");
        }

        return (rval);
}

/**
 * qla2x00_init_response_q_entries() - Initializes response queue entries.
 * @ha: HA context
 *
 * Beginning of request ring has initialization control block already built
 * by nvram config routine.
 *
 * Returns 0 on success.
 */
void
qla2x00_init_response_q_entries(struct rsp_que *rsp)
{
        uint16_t cnt;
        response_t *pkt;

        rsp->ring_ptr = rsp->ring;
        rsp->ring_index    = 0;
        rsp->status_srb = NULL;
        pkt = rsp->ring_ptr;
        for (cnt = 0; cnt < rsp->length; cnt++) {
                pkt->signature = RESPONSE_PROCESSED;
                pkt++;
        }
}

/**
 * qla2x00_update_fw_options() - Read and process firmware options.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
void
qla2x00_update_fw_options(scsi_qla_host_t *vha)
{
        uint16_t swing, emphasis, tx_sens, rx_sens;
        struct qla_hw_data *ha = vha->hw;

        memset(ha->fw_options, 0, sizeof(ha->fw_options));
        qla2x00_get_fw_options(vha, ha->fw_options);

        if (IS_QLA2100(ha) || IS_QLA2200(ha))
                return;

        /* Serial Link options. */
        ql_dbg(ql_dbg_init + ql_dbg_buffer, vha, 0x0115,
            "Serial link options.\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_buffer, vha, 0x0109,
            (uint8_t *)&ha->fw_seriallink_options,
            sizeof(ha->fw_seriallink_options));

        ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
        if (ha->fw_seriallink_options[3] & BIT_2) {
                ha->fw_options[1] |= FO1_SET_EMPHASIS_SWING;

                /*  1G settings */
                swing = ha->fw_seriallink_options[2] & (BIT_2 | BIT_1 | BIT_0);
                emphasis = (ha->fw_seriallink_options[2] &
                    (BIT_4 | BIT_3)) >> 3;
                tx_sens = ha->fw_seriallink_options[0] &
                    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
                rx_sens = (ha->fw_seriallink_options[0] &
                    (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
                ha->fw_options[10] = (emphasis << 14) | (swing << 8);
                if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
                        if (rx_sens == 0x0)
                                rx_sens = 0x3;
                        ha->fw_options[10] |= (tx_sens << 4) | rx_sens;
                } else if (IS_QLA2322(ha) || IS_QLA6322(ha))
                        ha->fw_options[10] |= BIT_5 |
                            ((rx_sens & (BIT_1 | BIT_0)) << 2) |
                            (tx_sens & (BIT_1 | BIT_0));

                /*  2G settings */
                swing = (ha->fw_seriallink_options[2] &
                    (BIT_7 | BIT_6 | BIT_5)) >> 5;
                emphasis = ha->fw_seriallink_options[3] & (BIT_1 | BIT_0);
                tx_sens = ha->fw_seriallink_options[1] &
                    (BIT_3 | BIT_2 | BIT_1 | BIT_0);
                rx_sens = (ha->fw_seriallink_options[1] &
                    (BIT_7 | BIT_6 | BIT_5 | BIT_4)) >> 4;
                ha->fw_options[11] = (emphasis << 14) | (swing << 8);
                if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
                        if (rx_sens == 0x0)
                                rx_sens = 0x3;
                        ha->fw_options[11] |= (tx_sens << 4) | rx_sens;
                } else if (IS_QLA2322(ha) || IS_QLA6322(ha))
                        ha->fw_options[11] |= BIT_5 |
                            ((rx_sens & (BIT_1 | BIT_0)) << 2) |
                            (tx_sens & (BIT_1 | BIT_0));
        }

        /* FCP2 options. */
        /*  Return command IOCBs without waiting for an ABTS to complete. */
        ha->fw_options[3] |= BIT_13;

        /* LED scheme. */
        if (ha->flags.enable_led_scheme)
                ha->fw_options[2] |= BIT_12;

        /* Detect ISP6312. */
        if (IS_QLA6312(ha))
                ha->fw_options[2] |= BIT_13;

        /* Update firmware options. */
        qla2x00_set_fw_options(vha, ha->fw_options);
}

void
qla24xx_update_fw_options(scsi_qla_host_t *vha)
{
        int rval;
        struct qla_hw_data *ha = vha->hw;

        if (IS_QLA82XX(ha))
                return;

        /* Update Serial Link options. */
        if ((le16_to_cpu(ha->fw_seriallink_options24[0]) & BIT_0) == 0)
                return;

        rval = qla2x00_set_serdes_params(vha,
            le16_to_cpu(ha->fw_seriallink_options24[1]),
            le16_to_cpu(ha->fw_seriallink_options24[2]),
            le16_to_cpu(ha->fw_seriallink_options24[3]));
        if (rval != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x0104,
                    "Unable to update Serial Link options (%x).\n", rval);
        }
}

void
qla2x00_config_rings(struct scsi_qla_host *vha)
{
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        struct req_que *req = ha->req_q_map[0];
        struct rsp_que *rsp = ha->rsp_q_map[0];

        /* Setup ring parameters in initialization control block. */
        ha->init_cb->request_q_outpointer = __constant_cpu_to_le16(0);
        ha->init_cb->response_q_inpointer = __constant_cpu_to_le16(0);
        ha->init_cb->request_q_length = cpu_to_le16(req->length);
        ha->init_cb->response_q_length = cpu_to_le16(rsp->length);
        ha->init_cb->request_q_address[0] = cpu_to_le32(LSD(req->dma));
        ha->init_cb->request_q_address[1] = cpu_to_le32(MSD(req->dma));
        ha->init_cb->response_q_address[0] = cpu_to_le32(LSD(rsp->dma));
        ha->init_cb->response_q_address[1] = cpu_to_le32(MSD(rsp->dma));

        WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), 0);
        WRT_REG_WORD(ISP_REQ_Q_OUT(ha, reg), 0);
        WRT_REG_WORD(ISP_RSP_Q_IN(ha, reg), 0);
        WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), 0);
        RD_REG_WORD(ISP_RSP_Q_OUT(ha, reg));            /* PCI Posting. */
}

void
qla24xx_config_rings(struct scsi_qla_host *vha)
{
        struct qla_hw_data *ha = vha->hw;
        device_reg_t __iomem *reg = ISP_QUE_REG(ha, 0);
        struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
        struct qla_msix_entry *msix;
        struct init_cb_24xx *icb;
        uint16_t rid = 0;
        struct req_que *req = ha->req_q_map[0];
        struct rsp_que *rsp = ha->rsp_q_map[0];

        /* Setup ring parameters in initialization control block. */
        icb = (struct init_cb_24xx *)ha->init_cb;
        icb->request_q_outpointer = __constant_cpu_to_le16(0);
        icb->response_q_inpointer = __constant_cpu_to_le16(0);
        icb->request_q_length = cpu_to_le16(req->length);
        icb->response_q_length = cpu_to_le16(rsp->length);
        icb->request_q_address[0] = cpu_to_le32(LSD(req->dma));
        icb->request_q_address[1] = cpu_to_le32(MSD(req->dma));
        icb->response_q_address[0] = cpu_to_le32(LSD(rsp->dma));
        icb->response_q_address[1] = cpu_to_le32(MSD(rsp->dma));

        /* Setup ATIO queue dma pointers for target mode */
        icb->atio_q_inpointer = __constant_cpu_to_le16(0);
        icb->atio_q_length = cpu_to_le16(ha->tgt.atio_q_length);
        icb->atio_q_address[0] = cpu_to_le32(LSD(ha->tgt.atio_dma));
        icb->atio_q_address[1] = cpu_to_le32(MSD(ha->tgt.atio_dma));

        if (ha->mqenable || IS_QLA83XX(ha)) {
                icb->qos = __constant_cpu_to_le16(QLA_DEFAULT_QUE_QOS);
                icb->rid = __constant_cpu_to_le16(rid);
                if (ha->flags.msix_enabled) {
                        msix = &ha->msix_entries[1];
                        ql_dbg(ql_dbg_init, vha, 0x00fd,
                            "Registering vector 0x%x for base que.\n",
                            msix->entry);
                        icb->msix = cpu_to_le16(msix->entry);
                }
                /* Use alternate PCI bus number */
                if (MSB(rid))
                        icb->firmware_options_2 |=
                                __constant_cpu_to_le32(BIT_19);
                /* Use alternate PCI devfn */
                if (LSB(rid))
                        icb->firmware_options_2 |=
                                __constant_cpu_to_le32(BIT_18);

                /* Use Disable MSIX Handshake mode for capable adapters */
                if ((ha->fw_attributes & BIT_6) && (IS_MSIX_NACK_CAPABLE(ha)) &&
                    (ha->flags.msix_enabled)) {
                        icb->firmware_options_2 &=
                                __constant_cpu_to_le32(~BIT_22);
                        ha->flags.disable_msix_handshake = 1;
                        ql_dbg(ql_dbg_init, vha, 0x00fe,
                            "MSIX Handshake Disable Mode turned on.\n");
                } else {
                        icb->firmware_options_2 |=
                                __constant_cpu_to_le32(BIT_22);
                }
                icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_23);

                WRT_REG_DWORD(&reg->isp25mq.req_q_in, 0);
                WRT_REG_DWORD(&reg->isp25mq.req_q_out, 0);
                WRT_REG_DWORD(&reg->isp25mq.rsp_q_in, 0);
                WRT_REG_DWORD(&reg->isp25mq.rsp_q_out, 0);
        } else {
                WRT_REG_DWORD(&reg->isp24.req_q_in, 0);
                WRT_REG_DWORD(&reg->isp24.req_q_out, 0);
                WRT_REG_DWORD(&reg->isp24.rsp_q_in, 0);
                WRT_REG_DWORD(&reg->isp24.rsp_q_out, 0);
        }
        qlt_24xx_config_rings(vha);

        /* PCI posting */
        RD_REG_DWORD(&ioreg->hccr);
}

/**
 * qla2x00_init_rings() - Initializes firmware.
 * @ha: HA context
 *
 * Beginning of request ring has initialization control block already built
 * by nvram config routine.
 *
 * Returns 0 on success.
 */
int
qla2x00_init_rings(scsi_qla_host_t *vha)
{
        int     rval;
        unsigned long flags = 0;
        int cnt, que;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req;
        struct rsp_que *rsp;
        struct mid_init_cb_24xx *mid_init_cb =
            (struct mid_init_cb_24xx *) ha->init_cb;

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Clear outstanding commands array. */
        for (que = 0; que < ha->max_req_queues; que++) {
                req = ha->req_q_map[que];
                if (!req)
                        continue;
                for (cnt = 1; cnt < req->num_outstanding_cmds; cnt++)

                        req->outstanding_cmds[cnt] = NULL;

                req->current_outstanding_cmd = 1;

                /* Initialize firmware. */
                req->ring_ptr  = req->ring;
                req->ring_index    = 0;
                req->cnt      = req->length;
        }

        for (que = 0; que < ha->max_rsp_queues; que++) {
                rsp = ha->rsp_q_map[que];
                if (!rsp)
                        continue;
                /* Initialize response queue entries */
                if (IS_QLAFX00(ha))
                        qlafx00_init_response_q_entries(rsp);
                else
                        qla2x00_init_response_q_entries(rsp);
        }

        ha->tgt.atio_ring_ptr = ha->tgt.atio_ring;
        ha->tgt.atio_ring_index = 0;
        /* Initialize ATIO queue entries */
        qlt_init_atio_q_entries(vha);

        ha->isp_ops->config_rings(vha);

        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        ql_dbg(ql_dbg_init, vha, 0x00d1, "Issue init firmware.\n");

        if (IS_QLAFX00(ha)) {
                rval = qlafx00_init_firmware(vha, ha->init_cb_size);
                goto next_check;
        }

        /* Update any ISP specific firmware options before initialization. */
        ha->isp_ops->update_fw_options(vha);

        if (ha->flags.npiv_supported) {
                if (ha->operating_mode == LOOP && !IS_CNA_CAPABLE(ha))
                        ha->max_npiv_vports = MIN_MULTI_ID_FABRIC - 1;
                mid_init_cb->count = cpu_to_le16(ha->max_npiv_vports);
        }

        if (IS_FWI2_CAPABLE(ha)) {
                mid_init_cb->options = __constant_cpu_to_le16(BIT_1);
                mid_init_cb->init_cb.execution_throttle =
                    cpu_to_le16(ha->fw_xcb_count);
        }

        rval = qla2x00_init_firmware(vha, ha->init_cb_size);
next_check:
        if (rval) {
                ql_log(ql_log_fatal, vha, 0x00d2,
                    "Init Firmware **** FAILED ****.\n");
        } else {
                ql_dbg(ql_dbg_init, vha, 0x00d3,
                    "Init Firmware -- success.\n");
        }

        return (rval);
}

/**
 * qla2x00_fw_ready() - Waits for firmware ready.
 * @ha: HA context
 *
 * Returns 0 on success.
 */
static int
qla2x00_fw_ready(scsi_qla_host_t *vha)
{
        int             rval;
        unsigned long   wtime, mtime, cs84xx_time;
        uint16_t        min_wait;       /* Minimum wait time if loop is down */
        uint16_t        wait_time;      /* Wait time if loop is coming ready */
        uint16_t        state[5];
        struct qla_hw_data *ha = vha->hw;

        if (IS_QLAFX00(vha->hw))
                return qlafx00_fw_ready(vha);

        rval = QLA_SUCCESS;

        /* 20 seconds for loop down. */
        min_wait = 20;

        /*
         * Firmware should take at most one RATOV to login, plus 5 seconds for
         * our own processing.
         */
        if ((wait_time = (ha->retry_count*ha->login_timeout) + 5) < min_wait) {
                wait_time = min_wait;
        }

        /* Min wait time if loop down */
        mtime = jiffies + (min_wait * HZ);

        /* wait time before firmware ready */
        wtime = jiffies + (wait_time * HZ);

        /* Wait for ISP to finish LIP */
        if (!vha->flags.init_done)
                ql_log(ql_log_info, vha, 0x801e,
                    "Waiting for LIP to complete.\n");

        do {
                memset(state, -1, sizeof(state));
                rval = qla2x00_get_firmware_state(vha, state);
                if (rval == QLA_SUCCESS) {
                        if (state[0] < FSTATE_LOSS_OF_SYNC) {
                                vha->device_flags &= ~DFLG_NO_CABLE;
                        }
                        if (IS_QLA84XX(ha) && state[0] != FSTATE_READY) {
                                ql_dbg(ql_dbg_taskm, vha, 0x801f,
                                    "fw_state=%x 84xx=%x.\n", state[0],
                                    state[2]);
                                if ((state[2] & FSTATE_LOGGED_IN) &&
                                     (state[2] & FSTATE_WAITING_FOR_VERIFY)) {
                                        ql_dbg(ql_dbg_taskm, vha, 0x8028,
                                            "Sending verify iocb.\n");

                                        cs84xx_time = jiffies;
                                        rval = qla84xx_init_chip(vha);
                                        if (rval != QLA_SUCCESS) {
                                                ql_log(ql_log_warn,
                                                    vha, 0x8007,
                                                    "Init chip failed.\n");
                                                break;
                                        }

                                        /* Add time taken to initialize. */
                                        cs84xx_time = jiffies - cs84xx_time;
                                        wtime += cs84xx_time;
                                        mtime += cs84xx_time;
                                        ql_dbg(ql_dbg_taskm, vha, 0x8008,
                                            "Increasing wait time by %ld. "
                                            "New time %ld.\n", cs84xx_time,
                                            wtime);
                                }
                        } else if (state[0] == FSTATE_READY) {
                                ql_dbg(ql_dbg_taskm, vha, 0x8037,
                                    "F/W Ready - OK.\n");

                                qla2x00_get_retry_cnt(vha, &ha->retry_count,
                                    &ha->login_timeout, &ha->r_a_tov);

                                rval = QLA_SUCCESS;
                                break;
                        }

                        rval = QLA_FUNCTION_FAILED;

                        if (atomic_read(&vha->loop_down_timer) &&
                            state[0] != FSTATE_READY) {
                                /* Loop down. Timeout on min_wait for states
                                 * other than Wait for Login.
                                 */
                                if (time_after_eq(jiffies, mtime)) {
                                        ql_log(ql_log_info, vha, 0x8038,
                                            "Cable is unplugged...\n");

                                        vha->device_flags |= DFLG_NO_CABLE;
                                        break;
                                }
                        }
                } else {
                        /* Mailbox cmd failed. Timeout on min_wait. */
                        if (time_after_eq(jiffies, mtime) ||
                                ha->flags.isp82xx_fw_hung)
                                break;
                }

                if (time_after_eq(jiffies, wtime))
                        break;

                /* Delay for a while */
                msleep(500);
        } while (1);

        ql_dbg(ql_dbg_taskm, vha, 0x803a,
            "fw_state=%x (%x, %x, %x, %x) " "curr time=%lx.\n", state[0],
            state[1], state[2], state[3], state[4], jiffies);

        if (rval && !(vha->device_flags & DFLG_NO_CABLE)) {
                ql_log(ql_log_warn, vha, 0x803b,
                    "Firmware ready **** FAILED ****.\n");
        }

        return (rval);
}

/*
*  qla2x00_configure_hba
*      Setup adapter context.
*
* Input:
*      ha = adapter state pointer.
*
* Returns:
*      0 = success
*
* Context:
*      Kernel context.
*/
static int
qla2x00_configure_hba(scsi_qla_host_t *vha)
{
        int       rval;
        uint16_t      loop_id;
        uint16_t      topo;
        uint16_t      sw_cap;
        uint8_t       al_pa;
        uint8_t       area;
        uint8_t       domain;
        char            connect_type[22];
        struct qla_hw_data *ha = vha->hw;
        unsigned long flags;
        scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);

        /* Get host addresses. */
        rval = qla2x00_get_adapter_id(vha,
            &loop_id, &al_pa, &area, &domain, &topo, &sw_cap);
        if (rval != QLA_SUCCESS) {
                if (LOOP_TRANSITION(vha) || atomic_read(&ha->loop_down_timer) ||
                    IS_CNA_CAPABLE(ha) ||
                    (rval == QLA_COMMAND_ERROR && loop_id == 0x7)) {
                        ql_dbg(ql_dbg_disc, vha, 0x2008,
                            "Loop is in a transition state.\n");
                } else {
                        ql_log(ql_log_warn, vha, 0x2009,
                            "Unable to get host loop ID.\n");
                        if (IS_FWI2_CAPABLE(ha) && (vha == base_vha) &&
                            (rval == QLA_COMMAND_ERROR && loop_id == 0x1b)) {
                                ql_log(ql_log_warn, vha, 0x1151,
                                    "Doing link init.\n");
                                if (qla24xx_link_initialize(vha) == QLA_SUCCESS)
                                        return rval;
                        }
                        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
                }
                return (rval);
        }

        if (topo == 4) {
                ql_log(ql_log_info, vha, 0x200a,
                    "Cannot get topology - retrying.\n");
                return (QLA_FUNCTION_FAILED);
        }

        vha->loop_id = loop_id;

        /* initialize */
        ha->min_external_loopid = SNS_FIRST_LOOP_ID;
        ha->operating_mode = LOOP;
        ha->switch_cap = 0;

        switch (topo) {
        case 0:
                ql_dbg(ql_dbg_disc, vha, 0x200b, "HBA in NL topology.\n");
                ha->current_topology = ISP_CFG_NL;
                strcpy(connect_type, "(Loop)");
                break;

        case 1:
                ql_dbg(ql_dbg_disc, vha, 0x200c, "HBA in FL topology.\n");
                ha->switch_cap = sw_cap;
                ha->current_topology = ISP_CFG_FL;
                strcpy(connect_type, "(FL_Port)");
                break;

        case 2:
                ql_dbg(ql_dbg_disc, vha, 0x200d, "HBA in N P2P topology.\n");
                ha->operating_mode = P2P;
                ha->current_topology = ISP_CFG_N;
                strcpy(connect_type, "(N_Port-to-N_Port)");
                break;

        case 3:
                ql_dbg(ql_dbg_disc, vha, 0x200e, "HBA in F P2P topology.\n");
                ha->switch_cap = sw_cap;
                ha->operating_mode = P2P;
                ha->current_topology = ISP_CFG_F;
                strcpy(connect_type, "(F_Port)");
                break;

        default:
                ql_dbg(ql_dbg_disc, vha, 0x200f,
                    "HBA in unknown topology %x, using NL.\n", topo);
                ha->current_topology = ISP_CFG_NL;
                strcpy(connect_type, "(Loop)");
                break;
        }

        /* Save Host port and loop ID. */
        /* byte order - Big Endian */
        vha->d_id.b.domain = domain;
        vha->d_id.b.area = area;
        vha->d_id.b.al_pa = al_pa;

        spin_lock_irqsave(&ha->vport_slock, flags);
        qlt_update_vp_map(vha, SET_AL_PA);
        spin_unlock_irqrestore(&ha->vport_slock, flags);

        if (!vha->flags.init_done)
                ql_log(ql_log_info, vha, 0x2010,
                    "Topology - %s, Host Loop address 0x%x.\n",
                    connect_type, vha->loop_id);

        if (rval) {
                ql_log(ql_log_warn, vha, 0x2011,
                    "%s FAILED\n", __func__);
        } else {
                ql_dbg(ql_dbg_disc, vha, 0x2012,
                    "%s success\n", __func__);
        }

        return(rval);
}

inline void
qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len,
        char *def)
{
        char *st, *en;
        uint16_t index;
        struct qla_hw_data *ha = vha->hw;
        int use_tbl = !IS_QLA24XX_TYPE(ha) && !IS_QLA25XX(ha) &&
            !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha);

        if (memcmp(model, BINZERO, len) != 0) {
                strncpy(ha->model_number, model, len);
                st = en = ha->model_number;
                en += len - 1;
                while (en > st) {
                        if (*en != 0x20 && *en != 0x00)
                                break;
                        *en-- = '\0';
                }

                index = (ha->pdev->subsystem_device & 0xff);
                if (use_tbl &&
                    ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
                    index < QLA_MODEL_NAMES)
                        strncpy(ha->model_desc,
                            qla2x00_model_name[index * 2 + 1],
                            sizeof(ha->model_desc) - 1);
        } else {
                index = (ha->pdev->subsystem_device & 0xff);
                if (use_tbl &&
                    ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
                    index < QLA_MODEL_NAMES) {
                        strcpy(ha->model_number,
                            qla2x00_model_name[index * 2]);
                        strncpy(ha->model_desc,
                            qla2x00_model_name[index * 2 + 1],
                            sizeof(ha->model_desc) - 1);
                } else {
                        strcpy(ha->model_number, def);
                }
        }
        if (IS_FWI2_CAPABLE(ha))
                qla2xxx_get_vpd_field(vha, "\x82", ha->model_desc,
                    sizeof(ha->model_desc));
}

/* On sparc systems, obtain port and node WWN from firmware
 * properties.
 */
static void qla2xxx_nvram_wwn_from_ofw(scsi_qla_host_t *vha, nvram_t *nv)
{
#ifdef CONFIG_SPARC
        struct qla_hw_data *ha = vha->hw;
        struct pci_dev *pdev = ha->pdev;
        struct device_node *dp = pci_device_to_OF_node(pdev);
        const u8 *val;
        int len;

        val = of_get_property(dp, "port-wwn", &len);
        if (val && len >= WWN_SIZE)
                memcpy(nv->port_name, val, WWN_SIZE);

        val = of_get_property(dp, "node-wwn", &len);
        if (val && len >= WWN_SIZE)
                memcpy(nv->node_name, val, WWN_SIZE);
#endif
}

/*
* NVRAM configuration for ISP 2xxx
*
* Input:
*      ha                = adapter block pointer.
*
* Output:
*      initialization control block in response_ring
*      host adapters parameters in host adapter block
*
* Returns:
*      0 = success.
*/
int
qla2x00_nvram_config(scsi_qla_host_t *vha)
{
        int             rval;
        uint8_t         chksum = 0;
        uint16_t        cnt;
        uint8_t         *dptr1, *dptr2;
        struct qla_hw_data *ha = vha->hw;
        init_cb_t       *icb = ha->init_cb;
        nvram_t         *nv = ha->nvram;
        uint8_t         *ptr = ha->nvram;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        rval = QLA_SUCCESS;

        /* Determine NVRAM starting address. */
        ha->nvram_size = sizeof(nvram_t);
        ha->nvram_base = 0;
        if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha))
                if ((RD_REG_WORD(&reg->ctrl_status) >> 14) == 1)
                        ha->nvram_base = 0x80;

        /* Get NVRAM data and calculate checksum. */
        ha->isp_ops->read_nvram(vha, ptr, ha->nvram_base, ha->nvram_size);
        for (cnt = 0, chksum = 0; cnt < ha->nvram_size; cnt++)
                chksum += *ptr++;

        ql_dbg(ql_dbg_init + ql_dbg_buffer, vha, 0x010f,
            "Contents of NVRAM.\n");
        ql_dump_buffer(ql_dbg_init + ql_dbg_buffer, vha, 0x0110,
            (uint8_t *)nv, ha->nvram_size);

        /* Bad NVRAM data, set defaults parameters. */
        if (chksum || nv->id[0] != 'I' || nv->id[1] != 'S' ||
            nv->id[2] != 'P' || nv->id[3] != ' ' || nv->nvram_version < 1) {
                /* Reset NVRAM data. */
                ql_log(ql_log_warn, vha, 0x0064,
                    "Inconsistent NVRAM "
                    "detected: checksum=0x%x id=%c version=0x%x.\n",
                    chksum, nv->id[0], nv->nvram_version);
                ql_log(ql_log_warn, vha, 0x0065,
                    "Falling back to "
                    "functioning (yet invalid -- WWPN) defaults.\n");

                /*
                 * Set default initialization control block.
                 */
                memset(nv, 0, ha->nvram_size);
                nv->parameter_block_version = ICB_VERSION;

                if (IS_QLA23XX(ha)) {
                        nv->firmware_options[0] = BIT_2 | BIT_1;
                        nv->firmware_options[1] = BIT_7 | BIT_5;
                        nv->add_firmware_options[0] = BIT_5;
                        nv->add_firmware_options[1] = BIT_5 | BIT_4;
                        nv->frame_payload_size = __constant_cpu_to_le16(2048);
                        nv->special_options[1] = BIT_7;
                } else if (IS_QLA2200(ha)) {
                        nv->firmware_options[0] = BIT_2 | BIT_1;
                        nv->firmware_options[1] = BIT_7 | BIT_5;
                        nv->add_firmware_options[0] = BIT_5;
                        nv->add_firmware_options[1] = BIT_5 | BIT_4;
                        nv->frame_payload_size = __constant_cpu_to_le16(1024);
                } else if (IS_QLA2100(ha)) {
                        nv->firmware_options[0] = BIT_3 | BIT_1;
                        nv->firmware_options[1] = BIT_5;
                        nv->frame_payload_size = __constant_cpu_to_le16(1024);
                }

                nv->max_iocb_allocation = __constant_cpu_to_le16(256);
                nv->execution_throttle = __constant_cpu_to_le16(16);
                nv->retry_count = 8;
                nv->retry_delay = 1;

                nv->port_name[0] = 33;
                nv->port_name[3] = 224;
                nv->port_name[4] = 139;

                qla2xxx_nvram_wwn_from_ofw(vha, nv);

                nv->login_timeout = 4;

                /*
                 * Set default host adapter parameters
                 */
                nv->host_p[1] = BIT_2;
                nv->reset_delay = 5;
                nv->port_down_retry_count = 8;
                nv->max_luns_per_target = __constant_cpu_to_le16(8);
                nv->link_down_timeout = 60;

                rval = 1;
        }

#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2)
        /*
         * The SN2 does not provide BIOS emulation which means you can't change
         * potentially bogus BIOS settings. Force the use of default settings
         * for link rate and frame size.  Hope that the rest of the settings
         * are valid.
         */
        if (ia64_platform_is("sn2")) {
                nv->frame_payload_size = __constant_cpu_to_le16(2048);
                if (IS_QLA23XX(ha))
                        nv->special_options[1] = BIT_7;
        }
#endif

        /* Reset Initialization control block */
        memset(icb, 0, ha->init_cb_size);

        /*
         * Setup driver NVRAM options.
         */
        nv->firmware_options[0] |= (BIT_6 | BIT_1);
        nv->firmware_options[0] &= ~(BIT_5 | BIT_4);
        nv->firmware_options[1] |= (BIT_5 | BIT_0);
        nv->firmware_options[1] &= ~BIT_4;

        if (IS_QLA23XX(ha)) {
                nv->firmware_options[0] |= BIT_2;
                nv->firmware_options[0] &= ~BIT_3;
                nv->special_options[0] &= ~BIT_6;
                nv->add_firmware_options[1] |= BIT_5 | BIT_4;

                if (IS_QLA2300(ha)) {
                        if (ha->fb_rev == FPM_2310) {
                                strcpy(ha->model_number, "QLA2310");
                        } else {
                                strcpy(ha->model_number, "QLA2300");
                        }
                } else {
                        qla2x00_set_model_info(vha, nv->model_number,
                            sizeof(nv->model_number), "QLA23xx");
                }
        } else if (IS_QLA2200(ha)) {
                nv->firmware_options[0] |= BIT_2;
                /*
                 * 'Point-to-point preferred, else loop' is not a safe
                 * connection mode setting.
                 */
                if ((nv->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) ==
                    (BIT_5 | BIT_4)) {
                        /* Force 'loop preferred, else point-to-point'. */
                        nv->add_firmware_options[0] &= ~(BIT_6 | BIT_5 | BIT_4);
                        nv->add_firmware_options[0] |= BIT_5;
                }
                strcpy(ha->model_number, "QLA22xx");
        } else /*if (IS_QLA2100(ha))*/ {
                strcpy(ha->model_number, "QLA2100");
        }

        /*
         * Copy over NVRAM RISC parameter block to initialization control block.
         */
        dptr1 = (uint8_t *)icb;
        dptr2 = (uint8_t *)&nv->parameter_block_version;
        cnt = (uint8_t *)&icb->request_q_outpointer - (uint8_t *)&icb->version;
        while (cnt--)
                *dptr1++ = *dptr2++;

        /* Copy 2nd half. */
        dptr1 = (uint8_t *)icb->add_firmware_options;
        cnt = (uint8_t *)icb->reserved_3 - (uint8_t *)icb->add_firmware_options;
        while (cnt--)
                *dptr1++ = *dptr2++;

        /* Use alternate WWN? */
        if (nv->host_p[1] & BIT_7) {
                memcpy(icb->node_name, nv->alternate_node_name, WWN_SIZE);
                memcpy(icb->port_name, nv->alternate_port_name, WWN_SIZE);
        }

        /* Prepare nodename */
        if ((icb->firmware_options[1] & BIT_6) == 0) {
                /*
                 * Firmware will apply the following mask if the nodename was
                 * not provided.
                 */
                memcpy(icb->node_name, icb->port_name, WWN_SIZE);
                icb->node_name[0] &= 0xF0;
        }

        /*
         * Set host adapter parameters.
         */

        /*
         * BIT_7 in the host-parameters section allows for modification to
         * internal driver logging.
         */
        if (nv->host_p[0] & BIT_7)
                ql2xextended_error_logging = QL_DBG_DEFAULT1_MASK;
        ha->flags.disable_risc_code_load = ((nv->host_p[0] & BIT_4) ? 1 : 0);
        /* Always load RISC code on non ISP2[12]00 chips. */
        if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
                ha->flags.disable_risc_code_load = 0;
        ha->flags.enable_lip_reset = ((nv->host_p[1] & BIT_1) ? 1 : 0);
        ha->flags.enable_lip_full_login = ((nv->host_p[1] & BIT_2) ? 1 : 0);
        ha->flags.enable_target_reset = ((nv->host_p[1] & BIT_3) ? 1 : 0);
        ha->flags.enable_led_scheme = (nv->special_options[1] & BIT_4) ? 1 : 0;
        ha->flags.disable_serdes = 0;

        ha->operating_mode =
            (icb->add_firmware_options[0] & (BIT_6 | BIT_5 | BIT_4)) >> 4;

        memcpy(ha->fw_seriallink_options, nv->seriallink_options,
            sizeof(ha->fw_seriallink_options));

        /* save HBA serial number */
        ha->serial0 = icb->port_name[5];
        ha->serial1 = icb->port_name[6];
        ha->serial2 = icb->port_name[7];
        memcpy(vha->node_name, icb->node_name, WWN_SIZE);
        memcpy(vha->port_name, icb->port_name, WWN_SIZE);

        icb->execution_throttle = __constant_cpu_to_le16(0xFFFF);

        ha->retry_count = nv->retry_count;

        /* Set minimum login_timeout to 4 seconds. */
        if (nv->login_timeout != ql2xlogintimeout)
                nv->login_timeout = ql2xlogintimeout;
        if (nv->login_timeout < 4)
                nv->login_timeout = 4;
        ha->login_timeout = nv->login_timeout;
        icb->login_timeout = nv->login_timeout;

        /* Set minimum RATOV to 100 tenths of a second. */
        ha->r_a_tov = 100;

        ha->loop_reset_delay = nv->reset_delay;

        /* Link Down Timeout = 0:
         *
         *      When Port Down timer expires we will start returning
         *      I/O's to OS with "DID_NO_CONNECT".
         *
         * Link Down Timeout != 0:
         *
         *       The driver waits for the link to come up after link down
         *       before returning I/Os to OS with "DID_NO_CONNECT".
         */
        if (nv->link_down_timeout == 0) {
                ha->loop_down_abort_time =
                    (LOOP_DOWN_TIME - LOOP_DOWN_TIMEOUT);
        } else {
                ha->link_down_timeout =  nv->link_down_timeout;
                ha->loop_down_abort_time =
                    (LOOP_DOWN_TIME - ha->link_down_timeout);
        }

        /*
         * Need enough time to try and get the port back.
         */
        ha->port_down_retry_count = nv->port_down_retry_count;
        if (qlport_down_retry)
                ha->port_down_retry_count = qlport_down_retry;
        /* Set login_retry_count */
        ha->login_retry_count  = nv->retry_count;
        if (ha->port_down_retry_count == nv->port_down_retry_count &&
            ha->port_down_retry_count > 3)
                ha->login_retry_count = ha->port_down_retry_count;
        else if (ha->port_down_retry_count > (int)ha->login_retry_count)
                ha->login_retry_count = ha->port_down_retry_count;
        if (ql2xloginretrycount)
                ha->login_retry_count = ql2xloginretrycount;

        icb->lun_enables = __constant_cpu_to_le16(0);
        icb->command_resource_count = 0;
        icb->immediate_notify_resource_count = 0;
        icb->timeout = __constant_cpu_to_le16(0);

        if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
                /* Enable RIO */
                icb->firmware_options[0] &= ~BIT_3;
                icb->add_firmware_options[0] &=
                    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
                icb->add_firmware_options[0] |= BIT_2;
                icb->response_accumulation_timer = 3;
                icb->interrupt_delay_timer = 5;

                vha->flags.process_response_queue = 1;
        } else {
                /* Enable ZIO. */
                if (!vha->flags.init_done) {
                        ha->zio_mode = icb->add_firmware_options[0] &
                            (BIT_3 | BIT_2 | BIT_1 | BIT_0);
                        ha->zio_timer = icb->interrupt_delay_timer ?
                            icb->interrupt_delay_timer: 2;
                }
                icb->add_firmware_options[0] &=
                    ~(BIT_3 | BIT_2 | BIT_1 | BIT_0);
                vha->flags.process_response_queue = 0;
                if (ha->zio_mode != QLA_ZIO_DISABLED) {
                        ha->zio_mode = QLA_ZIO_MODE_6;

                        ql_log(ql_log_info, vha, 0x0068,
                            "ZIO mode %d enabled; timer delay (%d us).\n",
                            ha->zio_mode, ha->zio_timer * 100);

                        icb->add_firmware_options[0] |= (uint8_t)ha->zio_mode;
                        icb->interrupt_delay_timer = (uint8_t)ha->zio_timer;
                        vha->flags.process_response_queue = 1;
                }
        }

        if (rval) {
                ql_log(ql_log_warn, vha, 0x0069,
                    "NVRAM configuration failed.\n");
        }
        return (rval);
}

static void
qla2x00_rport_del(void *data)
{
        fc_port_t *fcport = data;
        struct fc_rport *rport;
        scsi_qla_host_t *vha = fcport->vha;
        unsigned long flags;

        spin_lock_irqsave(fcport->vha->host->host_lock, flags);
        rport = fcport->drport ? fcport->drport: fcport->rport;
        fcport->drport = NULL;
        spin_unlock_irqrestore(fcport->vha->host->host_lock, flags);
        if (rport) {
                fc_remote_port_delete(rport);
                /*
                 * Release the target mode FC NEXUS in qla_target.c code
                 * if target mod is enabled.
                 */
                qlt_fc_port_deleted(vha, fcport);
        }
}

/**
 * qla2x00_alloc_fcport() - Allocate a generic fcport.
 * @ha: HA context
 * @flags: allocation flags
 *
 * Returns a pointer to the allocated fcport, or NULL, if none available.
 */
fc_port_t *
qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags)
{
        fc_port_t *fcport;

        fcport = kzalloc(sizeof(fc_port_t), flags);
        if (!fcport)
                return NULL;

        /* Setup fcport template structure. */
        fcport->vha = vha;
        fcport->port_type = FCT_UNKNOWN;
        fcport->loop_id = FC_NO_LOOP_ID;
        qla2x00_set_fcport_state(fcport, FCS_UNCONFIGURED);
        fcport->supported_classes = FC_COS_UNSPECIFIED;

        return fcport;
}

/*
 * qla2x00_configure_loop
 *      Updates Fibre Channel Device Database with what is actually on loop.
 *
 * Input:
 *      ha                = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 *      1 = error.
 *      2 = database was full and device was not configured.
 */
static int
qla2x00_configure_loop(scsi_qla_host_t *vha)
{
        int  rval;
        unsigned long flags, save_flags;
        struct qla_hw_data *ha = vha->hw;
        rval = QLA_SUCCESS;

        /* Get Initiator ID */
        if (test_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags)) {
                rval = qla2x00_configure_hba(vha);
                if (rval != QLA_SUCCESS) {
                        ql_dbg(ql_dbg_disc, vha, 0x2013,
                            "Unable to configure HBA.\n");
                        return (rval);
                }
        }

        save_flags = flags = vha->dpc_flags;
        ql_dbg(ql_dbg_disc, vha, 0x2014,
            "Configure loop -- dpc flags = 0x%lx.\n", flags);

        /*
         * If we have both an RSCN and PORT UPDATE pending then handle them
         * both at the same time.
         */
        clear_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
        clear_bit(RSCN_UPDATE, &vha->dpc_flags);

        qla2x00_get_data_rate(vha);

        /* Determine what we need to do */
        if (ha->current_topology == ISP_CFG_FL &&
            (test_bit(LOCAL_LOOP_UPDATE, &flags))) {

                set_bit(RSCN_UPDATE, &flags);

        } else if (ha->current_topology == ISP_CFG_F &&
            (test_bit(LOCAL_LOOP_UPDATE, &flags))) {

                set_bit(RSCN_UPDATE, &flags);
                clear_bit(LOCAL_LOOP_UPDATE, &flags);

        } else if (ha->current_topology == ISP_CFG_N) {
                clear_bit(RSCN_UPDATE, &flags);

        } else if (!vha->flags.online ||
            (test_bit(ABORT_ISP_ACTIVE, &flags))) {

                set_bit(RSCN_UPDATE, &flags);
                set_bit(LOCAL_LOOP_UPDATE, &flags);
        }

        if (test_bit(LOCAL_LOOP_UPDATE, &flags)) {
                if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
                        ql_dbg(ql_dbg_disc, vha, 0x2015,
                            "Loop resync needed, failing.\n");
                        rval = QLA_FUNCTION_FAILED;
                } else
                        rval = qla2x00_configure_local_loop(vha);
        }

        if (rval == QLA_SUCCESS && test_bit(RSCN_UPDATE, &flags)) {
                if (LOOP_TRANSITION(vha)) {
                        ql_dbg(ql_dbg_disc, vha, 0x201e,
                            "Needs RSCN update and loop transition.\n");
                        rval = QLA_FUNCTION_FAILED;
                }
                else
                        rval = qla2x00_configure_fabric(vha);
        }

        if (rval == QLA_SUCCESS) {
                if (atomic_read(&vha->loop_down_timer) ||
                    test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
                        rval = QLA_FUNCTION_FAILED;
                } else {
                        atomic_set(&vha->loop_state, LOOP_READY);
                        ql_dbg(ql_dbg_disc, vha, 0x2069,
                            "LOOP READY.\n");
                }
        }

        if (rval) {
                ql_dbg(ql_dbg_disc, vha, 0x206a,
                    "%s *** FAILED ***.\n", __func__);
        } else {
                ql_dbg(ql_dbg_disc, vha, 0x206b,
                    "%s: exiting normally.\n", __func__);
        }

        /* Restore state if a resync event occurred during processing */
        if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags)) {
                if (test_bit(LOCAL_LOOP_UPDATE, &save_flags))
                        set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
                if (test_bit(RSCN_UPDATE, &save_flags)) {
                        set_bit(RSCN_UPDATE, &vha->dpc_flags);
                }
        }

        return (rval);
}



/*
 * qla2x00_configure_local_loop
 *      Updates Fibre Channel Device Database with local loop devices.
 *
 * Input:
 *      ha = adapter block pointer.
 *
 * Returns:
 *      0 = success.
 */
static int
qla2x00_configure_local_loop(scsi_qla_host_t *vha)
{
        int             rval, rval2;
        int             found_devs;
        int             found;
        fc_port_t       *fcport, *new_fcport;

        uint16_t        index;
        uint16_t        entries;
        char            *id_iter;
        uint16_t        loop_id;
        uint8_t         domain, area, al_pa;
        struct qla_hw_data *ha = vha->hw;

        found_devs = 0;
        new_fcport = NULL;
        entries = MAX_FIBRE_DEVICES_LOOP;

        /* Get list of logged in devices. */
        memset(ha->gid_list, 0, qla2x00_gid_list_size(ha));
        rval = qla2x00_get_id_list(vha, ha->gid_list, ha->gid_list_dma,
            &entries);
        if (rval != QLA_SUCCESS)
                goto cleanup_allocation;

        ql_dbg(ql_dbg_disc, vha, 0x2017,
            "Entries in ID list (%d).\n", entries);
        ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2075,
            (uint8_t *)ha->gid_list,
            entries * sizeof(struct gid_list_info));

        /* Allocate temporary fcport for any new fcports discovered. */
        new_fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
        if (new_fcport == NULL) {
                ql_log(ql_log_warn, vha, 0x2018,
                    "Memory allocation failed for fcport.\n");
                rval = QLA_MEMORY_ALLOC_FAILED;
                goto cleanup_allocation;
        }
        new_fcport->flags &= ~FCF_FABRIC_DEVICE;

        /*
         * Mark local devices that were present with FCF_DEVICE_LOST for now.
         */
        list_for_each_entry(fcport, &vha->vp_fcports, list) {
                if (atomic_read(&fcport->state) == FCS_ONLINE &&
                    fcport->port_type != FCT_BROADCAST &&
                    (fcport->flags & FCF_FABRIC_DEVICE) == 0) {

                        ql_dbg(ql_dbg_disc, vha, 0x2019,
                            "Marking port lost loop_id=0x%04x.\n",
                            fcport->loop_id);

                        qla2x00_set_fcport_state(fcport, FCS_DEVICE_LOST);
                }
        }

        /* Add devices to port list. */
        id_iter = (char *)ha->gid_list;
        for (index = 0; index < entries; index++) {
                domain = ((struct gid_list_info *)id_iter)->domain;
                area = ((struct gid_list_info *)id_iter)->area;
                al_pa = ((struct gid_list_info *)id_iter)->al_pa;
                if (IS_QLA2100(ha) || IS_QLA2200(ha))
                        loop_id = (uint16_t)
                            ((struct gid_list_info *)id_iter)->loop_id_2100;
                else
                        loop_id = le16_to_cpu(
                            ((struct gid_list_info *)id_iter)->loop_id);
                id_iter += ha->gid_list_info_size;

                /* Bypass reserved domain fields. */
                if ((domain & 0xf0) == 0xf0)
                        continue;

                /* Bypass if not same domain and area of adapter. */
                if (area && domain &&
                    (area != vha->d_id.b.area || domain != vha->d_id.b.domain))
                        continue;

                /* Bypass invalid local loop ID. */
                if (loop_id > LAST_LOCAL_LOOP_ID)
                        continue;

                memset(new_fcport, 0, sizeof(fc_port_t));

                /* Fill in member data. */
                new_fcport->d_id.b.domain = domain;
                new_fcport->d_id.b.area = area;
                new_fcport->d_id.b.al_pa = al_pa;
                new_fcport->loop_id = loop_id;
                rval2 = qla2x00_get_port_database(vha, new_fcport, 0);
                if (rval2 != QLA_SUCCESS) {
                        ql_dbg(ql_dbg_disc, vha, 0x201a,
                            "Failed to retrieve fcport information "
                            "-- get_port_database=%x, loop_id=0x%04x.\n",
                            rval2, new_fcport->loop_id);
                        ql_dbg(ql_dbg_disc, vha, 0x201b,
                            "Scheduling resync.\n");
                        set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
                        continue;
                }

                /* Check for matching device in port list. */
                found = 0;
                fcport = NULL;
                list_for_each_entry(fcport, &vha->vp_fcports, list) {