/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */
#include "qla_def.h"

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

/*
 * NVRAM support routines
 */

/**
 * qla2x00_lock_nvram_access() -
 * @ha: HA context
 */
static void
qla2x00_lock_nvram_access(struct qla_hw_data *ha)
{
        uint16_t data;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha)) {
                data = RD_REG_WORD(&reg->nvram);
                while (data & NVR_BUSY) {
                        udelay(100);
                        data = RD_REG_WORD(&reg->nvram);
                }

                /* Lock resource */
                WRT_REG_WORD(&reg->u.isp2300.host_semaphore, 0x1);
                RD_REG_WORD(&reg->u.isp2300.host_semaphore);
                udelay(5);
                data = RD_REG_WORD(&reg->u.isp2300.host_semaphore);
                while ((data & BIT_0) == 0) {
                        /* Lock failed */
                        udelay(100);
                        WRT_REG_WORD(&reg->u.isp2300.host_semaphore, 0x1);
                        RD_REG_WORD(&reg->u.isp2300.host_semaphore);
                        udelay(5);
                        data = RD_REG_WORD(&reg->u.isp2300.host_semaphore);
                }
        }
}

/**
 * qla2x00_unlock_nvram_access() -
 * @ha: HA context
 */
static void
qla2x00_unlock_nvram_access(struct qla_hw_data *ha)
{
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA2300(ha)) {
                WRT_REG_WORD(&reg->u.isp2300.host_semaphore, 0);
                RD_REG_WORD(&reg->u.isp2300.host_semaphore);
        }
}

/**
 * qla2x00_nv_write() - Prepare for NVRAM read/write operation.
 * @ha: HA context
 * @data: Serial interface selector
 */
static void
qla2x00_nv_write(struct qla_hw_data *ha, uint16_t data)
{
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        WRT_REG_WORD(&reg->nvram, data | NVR_SELECT | NVR_WRT_ENABLE);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        NVRAM_DELAY();
        WRT_REG_WORD(&reg->nvram, data | NVR_SELECT | NVR_CLOCK |
            NVR_WRT_ENABLE);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        NVRAM_DELAY();
        WRT_REG_WORD(&reg->nvram, data | NVR_SELECT | NVR_WRT_ENABLE);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        NVRAM_DELAY();
}

/**
 * qla2x00_nvram_request() - Sends read command to NVRAM and gets data from
 *      NVRAM.
 * @ha: HA context
 * @nv_cmd: NVRAM command
 *
 * Bit definitions for NVRAM command:
 *
 *      Bit 26     = start bit
 *      Bit 25, 24 = opcode
 *      Bit 23-16  = address
 *      Bit 15-0   = write data
 *
 * Returns the word read from nvram @addr.
 */
static uint16_t
qla2x00_nvram_request(struct qla_hw_data *ha, uint32_t nv_cmd)
{
        uint8_t         cnt;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        uint16_t        data = 0;
        uint16_t        reg_data;

        /* Send command to NVRAM. */
        nv_cmd <<= 5;
        for (cnt = 0; cnt < 11; cnt++) {
                if (nv_cmd & BIT_31)
                        qla2x00_nv_write(ha, NVR_DATA_OUT);
                else
                        qla2x00_nv_write(ha, 0);
                nv_cmd <<= 1;
        }

        /* Read data from NVRAM. */
        for (cnt = 0; cnt < 16; cnt++) {
                WRT_REG_WORD(&reg->nvram, NVR_SELECT | NVR_CLOCK);
                RD_REG_WORD(&reg->nvram);       /* PCI Posting. */
                NVRAM_DELAY();
                data <<= 1;
                reg_data = RD_REG_WORD(&reg->nvram);
                if (reg_data & NVR_DATA_IN)
                        data |= BIT_0;
                WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                RD_REG_WORD(&reg->nvram);       /* PCI Posting. */
                NVRAM_DELAY();
        }

        /* Deselect chip. */
        WRT_REG_WORD(&reg->nvram, NVR_DESELECT);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        NVRAM_DELAY();

        return data;
}


/**
 * qla2x00_get_nvram_word() - Calculates word position in NVRAM and calls the
 *      request routine to get the word from NVRAM.
 * @ha: HA context
 * @addr: Address in NVRAM to read
 *
 * Returns the word read from nvram @addr.
 */
static uint16_t
qla2x00_get_nvram_word(struct qla_hw_data *ha, uint32_t addr)
{
        uint16_t        data;
        uint32_t        nv_cmd;

        nv_cmd = addr << 16;
        nv_cmd |= NV_READ_OP;
        data = qla2x00_nvram_request(ha, nv_cmd);

        return (data);
}

/**
 * qla2x00_nv_deselect() - Deselect NVRAM operations.
 * @ha: HA context
 */
static void
qla2x00_nv_deselect(struct qla_hw_data *ha)
{
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        WRT_REG_WORD(&reg->nvram, NVR_DESELECT);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        NVRAM_DELAY();
}

/**
 * qla2x00_write_nvram_word() - Write NVRAM data.
 * @ha: HA context
 * @addr: Address in NVRAM to write
 * @data: word to program
 */
static void
qla2x00_write_nvram_word(struct qla_hw_data *ha, uint32_t addr, uint16_t data)
{
        int count;
        uint16_t word;
        uint32_t nv_cmd, wait_cnt;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);

        qla2x00_nv_write(ha, NVR_DATA_OUT);
        qla2x00_nv_write(ha, 0);
        qla2x00_nv_write(ha, 0);

        for (word = 0; word < 8; word++)
                qla2x00_nv_write(ha, NVR_DATA_OUT);

        qla2x00_nv_deselect(ha);

        /* Write data */
        nv_cmd = (addr << 16) | NV_WRITE_OP;
        nv_cmd |= data;
        nv_cmd <<= 5;
        for (count = 0; count < 27; count++) {
                if (nv_cmd & BIT_31)
                        qla2x00_nv_write(ha, NVR_DATA_OUT);
                else
                        qla2x00_nv_write(ha, 0);

                nv_cmd <<= 1;
        }

        qla2x00_nv_deselect(ha);

        /* Wait for NVRAM to become ready */
        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        wait_cnt = NVR_WAIT_CNT;
        do {
                if (!--wait_cnt) {
                        ql_dbg(ql_dbg_user, vha, 0x708d,
                            "NVRAM didn't go ready...\n");
                        break;
                }
                NVRAM_DELAY();
                word = RD_REG_WORD(&reg->nvram);
        } while ((word & NVR_DATA_IN) == 0);

        qla2x00_nv_deselect(ha);

        /* Disable writes */
        qla2x00_nv_write(ha, NVR_DATA_OUT);
        for (count = 0; count < 10; count++)
                qla2x00_nv_write(ha, 0);

        qla2x00_nv_deselect(ha);
}

static int
qla2x00_write_nvram_word_tmo(struct qla_hw_data *ha, uint32_t addr,
        uint16_t data, uint32_t tmo)
{
        int ret, count;
        uint16_t word;
        uint32_t nv_cmd;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        ret = QLA_SUCCESS;

        qla2x00_nv_write(ha, NVR_DATA_OUT);
        qla2x00_nv_write(ha, 0);
        qla2x00_nv_write(ha, 0);

        for (word = 0; word < 8; word++)
                qla2x00_nv_write(ha, NVR_DATA_OUT);

        qla2x00_nv_deselect(ha);

        /* Write data */
        nv_cmd = (addr << 16) | NV_WRITE_OP;
        nv_cmd |= data;
        nv_cmd <<= 5;
        for (count = 0; count < 27; count++) {
                if (nv_cmd & BIT_31)
                        qla2x00_nv_write(ha, NVR_DATA_OUT);
                else
                        qla2x00_nv_write(ha, 0);

                nv_cmd <<= 1;
        }

        qla2x00_nv_deselect(ha);

        /* Wait for NVRAM to become ready */
        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        do {
                NVRAM_DELAY();
                word = RD_REG_WORD(&reg->nvram);
                if (!--tmo) {
                        ret = QLA_FUNCTION_FAILED;
                        break;
                }
        } while ((word & NVR_DATA_IN) == 0);

        qla2x00_nv_deselect(ha);

        /* Disable writes */
        qla2x00_nv_write(ha, NVR_DATA_OUT);
        for (count = 0; count < 10; count++)
                qla2x00_nv_write(ha, 0);

        qla2x00_nv_deselect(ha);

        return ret;
}

/**
 * qla2x00_clear_nvram_protection() -
 * @ha: HA context
 */
static int
qla2x00_clear_nvram_protection(struct qla_hw_data *ha)
{
        int ret, stat;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        uint32_t word, wait_cnt;
        uint16_t wprot, wprot_old;
        scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);

        /* Clear NVRAM write protection. */
        ret = QLA_FUNCTION_FAILED;

        wprot_old = cpu_to_le16(qla2x00_get_nvram_word(ha, ha->nvram_base));
        stat = qla2x00_write_nvram_word_tmo(ha, ha->nvram_base,
                                            cpu_to_le16(0x1234), 100000);
        wprot = cpu_to_le16(qla2x00_get_nvram_word(ha, ha->nvram_base));
        if (stat != QLA_SUCCESS || wprot != 0x1234) {
                /* Write enable. */
                qla2x00_nv_write(ha, NVR_DATA_OUT);
                qla2x00_nv_write(ha, 0);
                qla2x00_nv_write(ha, 0);
                for (word = 0; word < 8; word++)
                        qla2x00_nv_write(ha, NVR_DATA_OUT);

                qla2x00_nv_deselect(ha);

                /* Enable protection register. */
                qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
                qla2x00_nv_write(ha, NVR_PR_ENABLE);
                qla2x00_nv_write(ha, NVR_PR_ENABLE);
                for (word = 0; word < 8; word++)
                        qla2x00_nv_write(ha, NVR_DATA_OUT | NVR_PR_ENABLE);

                qla2x00_nv_deselect(ha);

                /* Clear protection register (ffff is cleared). */
                qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
                qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
                qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
                for (word = 0; word < 8; word++)
                        qla2x00_nv_write(ha, NVR_DATA_OUT | NVR_PR_ENABLE);

                qla2x00_nv_deselect(ha);

                /* Wait for NVRAM to become ready. */
                WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                RD_REG_WORD(&reg->nvram);       /* PCI Posting. */
                wait_cnt = NVR_WAIT_CNT;
                do {
                        if (!--wait_cnt) {
                                ql_dbg(ql_dbg_user, vha, 0x708e,
                                    "NVRAM didn't go ready...\n");
                                break;
                        }
                        NVRAM_DELAY();
                        word = RD_REG_WORD(&reg->nvram);
                } while ((word & NVR_DATA_IN) == 0);

                if (wait_cnt)
                        ret = QLA_SUCCESS;
        } else
                qla2x00_write_nvram_word(ha, ha->nvram_base, wprot_old);

        return ret;
}

static void
qla2x00_set_nvram_protection(struct qla_hw_data *ha, int stat)
{
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        uint32_t word, wait_cnt;
        scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);

        if (stat != QLA_SUCCESS)
                return;

        /* Set NVRAM write protection. */
        /* Write enable. */
        qla2x00_nv_write(ha, NVR_DATA_OUT);
        qla2x00_nv_write(ha, 0);
        qla2x00_nv_write(ha, 0);
        for (word = 0; word < 8; word++)
                qla2x00_nv_write(ha, NVR_DATA_OUT);

        qla2x00_nv_deselect(ha);

        /* Enable protection register. */
        qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
        qla2x00_nv_write(ha, NVR_PR_ENABLE);
        qla2x00_nv_write(ha, NVR_PR_ENABLE);
        for (word = 0; word < 8; word++)
                qla2x00_nv_write(ha, NVR_DATA_OUT | NVR_PR_ENABLE);

        qla2x00_nv_deselect(ha);

        /* Enable protection register. */
        qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
        qla2x00_nv_write(ha, NVR_PR_ENABLE);
        qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
        for (word = 0; word < 8; word++)
                qla2x00_nv_write(ha, NVR_PR_ENABLE);

        qla2x00_nv_deselect(ha);

        /* Wait for NVRAM to become ready. */
        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        wait_cnt = NVR_WAIT_CNT;
        do {
                if (!--wait_cnt) {
                        ql_dbg(ql_dbg_user, vha, 0x708f,
                            "NVRAM didn't go ready...\n");
                        break;
                }
                NVRAM_DELAY();
                word = RD_REG_WORD(&reg->nvram);
        } while ((word & NVR_DATA_IN) == 0);
}


/*****************************************************************************/
/* Flash Manipulation Routines                                               */
/*****************************************************************************/

static inline uint32_t
flash_conf_addr(struct qla_hw_data *ha, uint32_t faddr)
{
        return ha->flash_conf_off | faddr;
}

static inline uint32_t
flash_data_addr(struct qla_hw_data *ha, uint32_t faddr)
{
        return ha->flash_data_off | faddr;
}

static inline uint32_t
nvram_conf_addr(struct qla_hw_data *ha, uint32_t naddr)
{
        return ha->nvram_conf_off | naddr;
}

static inline uint32_t
nvram_data_addr(struct qla_hw_data *ha, uint32_t naddr)
{
        return ha->nvram_data_off | naddr;
}

static uint32_t
qla24xx_read_flash_dword(struct qla_hw_data *ha, uint32_t addr)
{
        int rval;
        uint32_t cnt, data;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        WRT_REG_DWORD(&reg->flash_addr, addr & ~FARX_DATA_FLAG);
        /* Wait for READ cycle to complete. */
        rval = QLA_SUCCESS;
        for (cnt = 3000;
            (RD_REG_DWORD(&reg->flash_addr) & FARX_DATA_FLAG) == 0 &&
            rval == QLA_SUCCESS; cnt--) {
                if (cnt)
                        udelay(10);
                else
                        rval = QLA_FUNCTION_TIMEOUT;
                cond_resched();
        }

        /* TODO: What happens if we time out? */
        data = 0xDEADDEAD;
        if (rval == QLA_SUCCESS)
                data = RD_REG_DWORD(&reg->flash_data);

        return data;
}

uint32_t *
qla24xx_read_flash_data(scsi_qla_host_t *vha, uint32_t *dwptr, uint32_t faddr,
    uint32_t dwords)
{
        uint32_t i;
        struct qla_hw_data *ha = vha->hw;

        /* Dword reads to flash. */
        for (i = 0; i < dwords; i++, faddr++)
                dwptr[i] = cpu_to_le32(qla24xx_read_flash_dword(ha,
                    flash_data_addr(ha, faddr)));

        return dwptr;
}

static int
qla24xx_write_flash_dword(struct qla_hw_data *ha, uint32_t addr, uint32_t data)
{
        int rval;
        uint32_t cnt;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        WRT_REG_DWORD(&reg->flash_data, data);
        RD_REG_DWORD(&reg->flash_data);         /* PCI Posting. */
        WRT_REG_DWORD(&reg->flash_addr, addr | FARX_DATA_FLAG);
        /* Wait for Write cycle to complete. */
        rval = QLA_SUCCESS;
        for (cnt = 500000; (RD_REG_DWORD(&reg->flash_addr) & FARX_DATA_FLAG) &&
            rval == QLA_SUCCESS; cnt--) {
                if (cnt)
                        udelay(10);
                else
                        rval = QLA_FUNCTION_TIMEOUT;
                cond_resched();
        }
        return rval;
}

static void
qla24xx_get_flash_manufacturer(struct qla_hw_data *ha, uint8_t *man_id,
    uint8_t *flash_id)
{
        uint32_t ids;

        ids = qla24xx_read_flash_dword(ha, flash_conf_addr(ha, 0x03ab));
        *man_id = LSB(ids);
        *flash_id = MSB(ids);

        /* Check if man_id and flash_id are valid. */
        if (ids != 0xDEADDEAD && (*man_id == 0 || *flash_id == 0)) {
                /* Read information using 0x9f opcode
                 * Device ID, Mfg ID would be read in the format:
                 *   <Ext Dev Info><Device ID Part2><Device ID Part 1><Mfg ID>
                 * Example: ATMEL 0x00 01 45 1F
                 * Extract MFG and Dev ID from last two bytes.
                 */
                ids = qla24xx_read_flash_dword(ha, flash_conf_addr(ha, 0x009f));
                *man_id = LSB(ids);
                *flash_id = MSB(ids);
        }
}

static int
qla2xxx_find_flt_start(scsi_qla_host_t *vha, uint32_t *start)
{
        const char *loc, *locations[] = { "DEF", "PCI" };
        uint32_t pcihdr, pcids;
        uint32_t *dcode;
        uint8_t *buf, *bcode, last_image;
        uint16_t cnt, chksum, *wptr;
        struct qla_flt_location *fltl;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        /*
         * FLT-location structure resides after the last PCI region.
         */

        /* Begin with sane defaults. */
        loc = locations[0];
        *start = 0;
        if (IS_QLA24XX_TYPE(ha))
                *start = FA_FLASH_LAYOUT_ADDR_24;
        else if (IS_QLA25XX(ha))
                *start = FA_FLASH_LAYOUT_ADDR;
        else if (IS_QLA81XX(ha))
                *start = FA_FLASH_LAYOUT_ADDR_81;
        else if (IS_P3P_TYPE(ha)) {
                *start = FA_FLASH_LAYOUT_ADDR_82;
                goto end;
        } else if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
                *start = FA_FLASH_LAYOUT_ADDR_83;
                goto end;
        }
        /* Begin with first PCI expansion ROM header. */
        buf = (uint8_t *)req->ring;
        dcode = (uint32_t *)req->ring;
        pcihdr = 0;
        last_image = 1;
        do {
                /* Verify PCI expansion ROM header. */
                qla24xx_read_flash_data(vha, dcode, pcihdr >> 2, 0x20);
                bcode = buf + (pcihdr % 4);
                if (bcode[0x0] != 0x55 || bcode[0x1] != 0xaa)
                        goto end;

                /* Locate PCI data structure. */
                pcids = pcihdr + ((bcode[0x19] << 8) | bcode[0x18]);
                qla24xx_read_flash_data(vha, dcode, pcids >> 2, 0x20);
                bcode = buf + (pcihdr % 4);

                /* Validate signature of PCI data structure. */
                if (bcode[0x0] != 'P' || bcode[0x1] != 'C' ||
                    bcode[0x2] != 'I' || bcode[0x3] != 'R')
                        goto end;

                last_image = bcode[0x15] & BIT_7;

                /* Locate next PCI expansion ROM. */
                pcihdr += ((bcode[0x11] << 8) | bcode[0x10]) * 512;
        } while (!last_image);

        /* Now verify FLT-location structure. */
        fltl = (struct qla_flt_location *)req->ring;
        qla24xx_read_flash_data(vha, dcode, pcihdr >> 2,
            sizeof(struct qla_flt_location) >> 2);
        if (fltl->sig[0] != 'Q' || fltl->sig[1] != 'F' ||
            fltl->sig[2] != 'L' || fltl->sig[3] != 'T')
                goto end;

        wptr = (uint16_t *)req->ring;
        cnt = sizeof(struct qla_flt_location) >> 1;
        for (chksum = 0; cnt--; wptr++)
                chksum += le16_to_cpu(*wptr);
        if (chksum) {
                ql_log(ql_log_fatal, vha, 0x0045,
                    "Inconsistent FLTL detected: checksum=0x%x.\n", chksum);
                ql_dump_buffer(ql_dbg_init + ql_dbg_buffer, vha, 0x010e,
                    buf, sizeof(struct qla_flt_location));
                return QLA_FUNCTION_FAILED;
        }

        /* Good data.  Use specified location. */
        loc = locations[1];
        *start = (le16_to_cpu(fltl->start_hi) << 16 |
            le16_to_cpu(fltl->start_lo)) >> 2;
end:
        ql_dbg(ql_dbg_init, vha, 0x0046,
            "FLTL[%s] = 0x%x.\n",
            loc, *start);
        return QLA_SUCCESS;
}

static void
qla2xxx_get_flt_info(scsi_qla_host_t *vha, uint32_t flt_addr)
{
        const char *loc, *locations[] = { "DEF", "FLT" };
        const uint32_t def_fw[] =
                { FA_RISC_CODE_ADDR, FA_RISC_CODE_ADDR, FA_RISC_CODE_ADDR_81 };
        const uint32_t def_boot[] =
                { FA_BOOT_CODE_ADDR, FA_BOOT_CODE_ADDR, FA_BOOT_CODE_ADDR_81 };
        const uint32_t def_vpd_nvram[] =
                { FA_VPD_NVRAM_ADDR, FA_VPD_NVRAM_ADDR, FA_VPD_NVRAM_ADDR_81 };
        const uint32_t def_vpd0[] =
                { 0, 0, FA_VPD0_ADDR_81 };
        const uint32_t def_vpd1[] =
                { 0, 0, FA_VPD1_ADDR_81 };
        const uint32_t def_nvram0[] =
                { 0, 0, FA_NVRAM0_ADDR_81 };
        const uint32_t def_nvram1[] =
                { 0, 0, FA_NVRAM1_ADDR_81 };
        const uint32_t def_fdt[] =
                { FA_FLASH_DESCR_ADDR_24, FA_FLASH_DESCR_ADDR,
                        FA_FLASH_DESCR_ADDR_81 };
        const uint32_t def_npiv_conf0[] =
                { FA_NPIV_CONF0_ADDR_24, FA_NPIV_CONF0_ADDR,
                        FA_NPIV_CONF0_ADDR_81 };
        const uint32_t def_npiv_conf1[] =
                { FA_NPIV_CONF1_ADDR_24, FA_NPIV_CONF1_ADDR,
                        FA_NPIV_CONF1_ADDR_81 };
        const uint32_t fcp_prio_cfg0[] =
                { FA_FCP_PRIO0_ADDR, FA_FCP_PRIO0_ADDR_25,
                        0 };
        const uint32_t fcp_prio_cfg1[] =
                { FA_FCP_PRIO1_ADDR, FA_FCP_PRIO1_ADDR_25,
                        0 };
        uint32_t def;
        uint16_t *wptr;
        uint16_t cnt, chksum;
        uint32_t start;
        struct qla_flt_header *flt;
        struct qla_flt_region *region;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        def = 0;
        if (IS_QLA25XX(ha))
                def = 1;
        else if (IS_QLA81XX(ha))
                def = 2;

        /* Assign FCP prio region since older adapters may not have FLT, or
           FCP prio region in it's FLT.
         */
        ha->flt_region_fcp_prio = (ha->port_no == 0) ?
            fcp_prio_cfg0[def] : fcp_prio_cfg1[def];

        ha->flt_region_flt = flt_addr;
        wptr = (uint16_t *)req->ring;
        flt = (struct qla_flt_header *)req->ring;
        region = (struct qla_flt_region *)&flt[1];
        ha->isp_ops->read_optrom(vha, (uint8_t *)req->ring,
            flt_addr << 2, OPTROM_BURST_SIZE);
        if (*wptr == cpu_to_le16(0xffff))
                goto no_flash_data;
        if (flt->version != cpu_to_le16(1)) {
                ql_log(ql_log_warn, vha, 0x0047,
                    "Unsupported FLT detected: version=0x%x length=0x%x checksum=0x%x.\n",
                    le16_to_cpu(flt->version), le16_to_cpu(flt->length),
                    le16_to_cpu(flt->checksum));
                goto no_flash_data;
        }

        cnt = (sizeof(struct qla_flt_header) + le16_to_cpu(flt->length)) >> 1;
        for (chksum = 0; cnt--; wptr++)
                chksum += le16_to_cpu(*wptr);
        if (chksum) {
                ql_log(ql_log_fatal, vha, 0x0048,
                    "Inconsistent FLT detected: version=0x%x length=0x%x checksum=0x%x.\n",
                    le16_to_cpu(flt->version), le16_to_cpu(flt->length),
                    le16_to_cpu(flt->checksum));
                goto no_flash_data;
        }

        loc = locations[1];
        cnt = le16_to_cpu(flt->length) / sizeof(struct qla_flt_region);
        for ( ; cnt; cnt--, region++) {
                /* Store addresses as DWORD offsets. */
                start = le32_to_cpu(region->start) >> 2;
                ql_dbg(ql_dbg_init, vha, 0x0049,
                    "FLT[%02x]: start=0x%x "
                    "end=0x%x size=0x%x.\n", le32_to_cpu(region->code) & 0xff,
                    start, le32_to_cpu(region->end) >> 2,
                    le32_to_cpu(region->size));

                switch (le32_to_cpu(region->code) & 0xff) {
                case FLT_REG_FCOE_FW:
                        if (!IS_QLA8031(ha))
                                break;
                        ha->flt_region_fw = start;
                        break;
                case FLT_REG_FW:
                        if (IS_QLA8031(ha))
                                break;
                        ha->flt_region_fw = start;
                        break;
                case FLT_REG_BOOT_CODE:
                        ha->flt_region_boot = start;
                        break;
                case FLT_REG_VPD_0:
                        if (IS_QLA8031(ha))
                                break;
                        ha->flt_region_vpd_nvram = start;
                        if (IS_P3P_TYPE(ha))
                                break;
                        if (ha->port_no == 0)
                                ha->flt_region_vpd = start;
                        break;
                case FLT_REG_VPD_1:
                        if (IS_P3P_TYPE(ha) || IS_QLA8031(ha))
                                break;
                        if (ha->port_no == 1)
                                ha->flt_region_vpd = start;
                        break;
                case FLT_REG_VPD_2:
                        if (!IS_QLA27XX(ha))
                                break;
                        if (ha->port_no == 2)
                                ha->flt_region_vpd = start;
                        break;
                case FLT_REG_VPD_3:
                        if (!IS_QLA27XX(ha))
                                break;
                        if (ha->port_no == 3)
                                ha->flt_region_vpd = start;
                        break;
                case FLT_REG_NVRAM_0:
                        if (IS_QLA8031(ha))
                                break;
                        if (ha->port_no == 0)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_NVRAM_1:
                        if (IS_QLA8031(ha))
                                break;
                        if (ha->port_no == 1)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_NVRAM_2:
                        if (!IS_QLA27XX(ha))
                                break;
                        if (ha->port_no == 2)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_NVRAM_3:
                        if (!IS_QLA27XX(ha))
                                break;
                        if (ha->port_no == 3)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_FDT:
                        ha->flt_region_fdt = start;
                        break;
                case FLT_REG_NPIV_CONF_0:
                        if (ha->port_no == 0)
                                ha->flt_region_npiv_conf = start;
                        break;
                case FLT_REG_NPIV_CONF_1:
                        if (ha->port_no == 1)
                                ha->flt_region_npiv_conf = start;
                        break;
                case FLT_REG_GOLD_FW:
                        ha->flt_region_gold_fw = start;
                        break;
                case FLT_REG_FCP_PRIO_0:
                        if (ha->port_no == 0)
                                ha->flt_region_fcp_prio = start;
                        break;
                case FLT_REG_FCP_PRIO_1:
                        if (ha->port_no == 1)
                                ha->flt_region_fcp_prio = start;
                        break;
                case FLT_REG_BOOT_CODE_82XX:
                        ha->flt_region_boot = start;
                        break;
                case FLT_REG_BOOT_CODE_8044:
                        if (IS_QLA8044(ha))
                                ha->flt_region_boot = start;
                        break;
                case FLT_REG_FW_82XX:
                        ha->flt_region_fw = start;
                        break;
                case FLT_REG_CNA_FW:
                        if (IS_CNA_CAPABLE(ha))
                                ha->flt_region_fw = start;
                        break;
                case FLT_REG_GOLD_FW_82XX:
                        ha->flt_region_gold_fw = start;
                        break;
                case FLT_REG_BOOTLOAD_82XX:
                        ha->flt_region_bootload = start;
                        break;
                case FLT_REG_VPD_8XXX:
                        if (IS_CNA_CAPABLE(ha))
                                ha->flt_region_vpd = start;
                        break;
                case FLT_REG_FCOE_NVRAM_0:
                        if (!(IS_QLA8031(ha) || IS_QLA8044(ha)))
                                break;
                        if (ha->port_no == 0)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_FCOE_NVRAM_1:
                        if (!(IS_QLA8031(ha) || IS_QLA8044(ha)))
                                break;
                        if (ha->port_no == 1)
                                ha->flt_region_nvram = start;
                        break;
                case FLT_REG_IMG_PRI_27XX:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_img_status_pri = start;
                        break;
                case FLT_REG_IMG_SEC_27XX:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_img_status_sec = start;
                        break;
                case FLT_REG_FW_SEC_27XX:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_fw_sec = start;
                        break;
                case FLT_REG_BOOTLOAD_SEC_27XX:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_boot_sec = start;
                        break;
                case FLT_REG_VPD_SEC_27XX_0:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_vpd_sec = start;
                        break;
                case FLT_REG_VPD_SEC_27XX_1:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_vpd_sec = start;
                        break;
                case FLT_REG_VPD_SEC_27XX_2:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_vpd_sec = start;
                        break;
                case FLT_REG_VPD_SEC_27XX_3:
                        if (IS_QLA27XX(ha))
                                ha->flt_region_vpd_sec = start;
                        break;
                }
        }
        goto done;

no_flash_data:
        /* Use hardcoded defaults. */
        loc = locations[0];
        ha->flt_region_fw = def_fw[def];
        ha->flt_region_boot = def_boot[def];
        ha->flt_region_vpd_nvram = def_vpd_nvram[def];
        ha->flt_region_vpd = (ha->port_no == 0) ?
            def_vpd0[def] : def_vpd1[def];
        ha->flt_region_nvram = (ha->port_no == 0) ?
            def_nvram0[def] : def_nvram1[def];
        ha->flt_region_fdt = def_fdt[def];
        ha->flt_region_npiv_conf = (ha->port_no == 0) ?
            def_npiv_conf0[def] : def_npiv_conf1[def];
done:
        ql_dbg(ql_dbg_init, vha, 0x004a,
            "FLT[%s]: boot=0x%x fw=0x%x vpd_nvram=0x%x vpd=0x%x nvram=0x%x "
            "fdt=0x%x flt=0x%x npiv=0x%x fcp_prif_cfg=0x%x.\n",
            loc, ha->flt_region_boot, ha->flt_region_fw,
            ha->flt_region_vpd_nvram, ha->flt_region_vpd, ha->flt_region_nvram,
            ha->flt_region_fdt, ha->flt_region_flt, ha->flt_region_npiv_conf,
            ha->flt_region_fcp_prio);
}

static void
qla2xxx_get_fdt_info(scsi_qla_host_t *vha)
{
#define FLASH_BLK_SIZE_4K       0x1000
#define FLASH_BLK_SIZE_32K      0x8000
#define FLASH_BLK_SIZE_64K      0x10000
        const char *loc, *locations[] = { "MID", "FDT" };
        uint16_t cnt, chksum;
        uint16_t *wptr;
        struct qla_fdt_layout *fdt;
        uint8_t man_id, flash_id;
        uint16_t mid = 0, fid = 0;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        wptr = (uint16_t *)req->ring;
        fdt = (struct qla_fdt_layout *)req->ring;
        ha->isp_ops->read_optrom(vha, (uint8_t *)req->ring,
            ha->flt_region_fdt << 2, OPTROM_BURST_SIZE);
        if (*wptr == cpu_to_le16(0xffff))
                goto no_flash_data;
        if (fdt->sig[0] != 'Q' || fdt->sig[1] != 'L' || fdt->sig[2] != 'I' ||
            fdt->sig[3] != 'D')
                goto no_flash_data;

        for (cnt = 0, chksum = 0; cnt < sizeof(*fdt) >> 1; cnt++, wptr++)
                chksum += le16_to_cpu(*wptr);
        if (chksum) {
                ql_dbg(ql_dbg_init, vha, 0x004c,
                    "Inconsistent FDT detected:"
                    " checksum=0x%x id=%c version0x%x.\n", chksum,
                    fdt->sig[0], le16_to_cpu(fdt->version));
                ql_dump_buffer(ql_dbg_init + ql_dbg_buffer, vha, 0x0113,
                    (uint8_t *)fdt, sizeof(*fdt));
                goto no_flash_data;
        }

        loc = locations[1];
        mid = le16_to_cpu(fdt->man_id);
        fid = le16_to_cpu(fdt->id);
        ha->fdt_wrt_disable = fdt->wrt_disable_bits;
        ha->fdt_wrt_enable = fdt->wrt_enable_bits;
        ha->fdt_wrt_sts_reg_cmd = fdt->wrt_sts_reg_cmd;
        if (IS_QLA8044(ha))
                ha->fdt_erase_cmd = fdt->erase_cmd;
        else
                ha->fdt_erase_cmd =
                    flash_conf_addr(ha, 0x0300 | fdt->erase_cmd);
        ha->fdt_block_size = le32_to_cpu(fdt->block_size);
        if (fdt->unprotect_sec_cmd) {
                ha->fdt_unprotect_sec_cmd = flash_conf_addr(ha, 0x0300 |
                    fdt->unprotect_sec_cmd);
                ha->fdt_protect_sec_cmd = fdt->protect_sec_cmd ?
                    flash_conf_addr(ha, 0x0300 | fdt->protect_sec_cmd):
                    flash_conf_addr(ha, 0x0336);
        }
        goto done;
no_flash_data:
        loc = locations[0];
        if (IS_P3P_TYPE(ha)) {
                ha->fdt_block_size = FLASH_BLK_SIZE_64K;
                goto done;
        }
        qla24xx_get_flash_manufacturer(ha, &man_id, &flash_id);
        mid = man_id;
        fid = flash_id;
        ha->fdt_wrt_disable = 0x9c;
        ha->fdt_erase_cmd = flash_conf_addr(ha, 0x03d8);
        switch (man_id) {
        case 0xbf: /* STT flash. */
                if (flash_id == 0x8e)
                        ha->fdt_block_size = FLASH_BLK_SIZE_64K;
                else
                        ha->fdt_block_size = FLASH_BLK_SIZE_32K;

                if (flash_id == 0x80)
                        ha->fdt_erase_cmd = flash_conf_addr(ha, 0x0352);
                break;
        case 0x13: /* ST M25P80. */
                ha->fdt_block_size = FLASH_BLK_SIZE_64K;
                break;
        case 0x1f: /* Atmel 26DF081A. */
                ha->fdt_block_size = FLASH_BLK_SIZE_4K;
                ha->fdt_erase_cmd = flash_conf_addr(ha, 0x0320);
                ha->fdt_unprotect_sec_cmd = flash_conf_addr(ha, 0x0339);
                ha->fdt_protect_sec_cmd = flash_conf_addr(ha, 0x0336);
                break;
        default:
                /* Default to 64 kb sector size. */
                ha->fdt_block_size = FLASH_BLK_SIZE_64K;
                break;
        }
done:

        ql_dbg(ql_dbg_init, vha, 0x004d,
            "FDT[%s]: (0x%x/0x%x) erase=0x%x "
            "pr=%x wrtd=0x%x blk=0x%x.\n",
            loc, mid, fid,
            ha->fdt_erase_cmd, ha->fdt_protect_sec_cmd,
            ha->fdt_wrt_disable, ha->fdt_block_size);

}

static void
qla2xxx_get_idc_param(scsi_qla_host_t *vha)
{
#define QLA82XX_IDC_PARAM_ADDR       0x003e885c
        uint32_t *wptr;
        struct qla_hw_data *ha = vha->hw;
        struct req_que *req = ha->req_q_map[0];

        if (!(IS_P3P_TYPE(ha)))
                return;

        wptr = (uint32_t *)req->ring;
        ha->isp_ops->read_optrom(vha, (uint8_t *)req->ring,
                QLA82XX_IDC_PARAM_ADDR , 8);

        if (*wptr == cpu_to_le32(0xffffffff)) {
                ha->fcoe_dev_init_timeout = QLA82XX_ROM_DEV_INIT_TIMEOUT;
                ha->fcoe_reset_timeout = QLA82XX_ROM_DRV_RESET_ACK_TIMEOUT;
        } else {
                ha->fcoe_dev_init_timeout = le32_to_cpu(*wptr);
                wptr++;
                ha->fcoe_reset_timeout = le32_to_cpu(*wptr);
        }
        ql_dbg(ql_dbg_init, vha, 0x004e,
            "fcoe_dev_init_timeout=%d "
            "fcoe_reset_timeout=%d.\n", ha->fcoe_dev_init_timeout,
            ha->fcoe_reset_timeout);
        return;
}

int
qla2xxx_get_flash_info(scsi_qla_host_t *vha)
{
        int ret;
        uint32_t flt_addr;
        struct qla_hw_data *ha = vha->hw;

        if (!IS_QLA24XX_TYPE(ha) && !IS_QLA25XX(ha) &&
            !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLA27XX(ha))
                return QLA_SUCCESS;

        ret = qla2xxx_find_flt_start(vha, &flt_addr);
        if (ret != QLA_SUCCESS)
                return ret;

        qla2xxx_get_flt_info(vha, flt_addr);
        qla2xxx_get_fdt_info(vha);
        qla2xxx_get_idc_param(vha);

        return QLA_SUCCESS;
}

void
qla2xxx_flash_npiv_conf(scsi_qla_host_t *vha)
{
#define NPIV_CONFIG_SIZE        (16*1024)
        void *data;
        uint16_t *wptr;
        uint16_t cnt, chksum;
        int i;
        struct qla_npiv_header hdr;
        struct qla_npiv_entry *entry;
        struct qla_hw_data *ha = vha->hw;

        if (!IS_QLA24XX_TYPE(ha) && !IS_QLA25XX(ha) &&
            !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha))
                return;

        if (ha->flags.nic_core_reset_hdlr_active)
                return;

        if (IS_QLA8044(ha))
                return;

        ha->isp_ops->read_optrom(vha, (uint8_t *)&hdr,
            ha->flt_region_npiv_conf << 2, sizeof(struct qla_npiv_header));
        if (hdr.version == cpu_to_le16(0xffff))
                return;
        if (hdr.version != cpu_to_le16(1)) {
                ql_dbg(ql_dbg_user, vha, 0x7090,
                    "Unsupported NPIV-Config "
                    "detected: version=0x%x entries=0x%x checksum=0x%x.\n",
                    le16_to_cpu(hdr.version), le16_to_cpu(hdr.entries),
                    le16_to_cpu(hdr.checksum));
                return;
        }

        data = kmalloc(NPIV_CONFIG_SIZE, GFP_KERNEL);
        if (!data) {
                ql_log(ql_log_warn, vha, 0x7091,
                    "Unable to allocate memory for data.\n");
                return;
        }

        ha->isp_ops->read_optrom(vha, (uint8_t *)data,
            ha->flt_region_npiv_conf << 2, NPIV_CONFIG_SIZE);

        cnt = (sizeof(hdr) + le16_to_cpu(hdr.entries) * sizeof(*entry)) >> 1;
        for (wptr = data, chksum = 0; cnt--; wptr++)
                chksum += le16_to_cpu(*wptr);
        if (chksum) {
                ql_dbg(ql_dbg_user, vha, 0x7092,
                    "Inconsistent NPIV-Config "
                    "detected: version=0x%x entries=0x%x checksum=0x%x.\n",
                    le16_to_cpu(hdr.version), le16_to_cpu(hdr.entries),
                    le16_to_cpu(hdr.checksum));
                goto done;
        }

        entry = data + sizeof(struct qla_npiv_header);
        cnt = le16_to_cpu(hdr.entries);
        for (i = 0; cnt; cnt--, entry++, i++) {
                uint16_t flags;
                struct fc_vport_identifiers vid;
                struct fc_vport *vport;

                memcpy(&ha->npiv_info[i], entry, sizeof(struct qla_npiv_entry));

                flags = le16_to_cpu(entry->flags);
                if (flags == 0xffff)
                        continue;
                if ((flags & BIT_0) == 0)
                        continue;

                memset(&vid, 0, sizeof(vid));
                vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
                vid.vport_type = FC_PORTTYPE_NPIV;
                vid.disable = false;
                vid.port_name = wwn_to_u64(entry->port_name);
                vid.node_name = wwn_to_u64(entry->node_name);

                ql_dbg(ql_dbg_user, vha, 0x7093,
                    "NPIV[%02x]: wwpn=%llx "
                    "wwnn=%llx vf_id=0x%x Q_qos=0x%x F_qos=0x%x.\n", cnt,
                    (unsigned long long)vid.port_name,
                    (unsigned long long)vid.node_name,
                    le16_to_cpu(entry->vf_id),
                    entry->q_qos, entry->f_qos);

                if (i < QLA_PRECONFIG_VPORTS) {
                        vport = fc_vport_create(vha->host, 0, &vid);
                        if (!vport)
                                ql_log(ql_log_warn, vha, 0x7094,
                                    "NPIV-Config Failed to create vport [%02x]: "
                                    "wwpn=%llx wwnn=%llx.\n", cnt,
                                    (unsigned long long)vid.port_name,
                                    (unsigned long long)vid.node_name);
                }
        }
done:
        kfree(data);
}

static int
qla24xx_unprotect_flash(scsi_qla_host_t *vha)
{
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        if (ha->flags.fac_supported)
                return qla81xx_fac_do_write_enable(vha, 1);

        /* Enable flash write. */
        WRT_REG_DWORD(&reg->ctrl_status,
            RD_REG_DWORD(&reg->ctrl_status) | CSRX_FLASH_ENABLE);
        RD_REG_DWORD(&reg->ctrl_status);        /* PCI Posting. */

        if (!ha->fdt_wrt_disable)
                goto done;

        /* Disable flash write-protection, first clear SR protection bit */
        qla24xx_write_flash_dword(ha, flash_conf_addr(ha, 0x101), 0);
        /* Then write zero again to clear remaining SR bits.*/
        qla24xx_write_flash_dword(ha, flash_conf_addr(ha, 0x101), 0);
done:
        return QLA_SUCCESS;
}

static int
qla24xx_protect_flash(scsi_qla_host_t *vha)
{
        uint32_t cnt;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        if (ha->flags.fac_supported)
                return qla81xx_fac_do_write_enable(vha, 0);

        if (!ha->fdt_wrt_disable)
                goto skip_wrt_protect;

        /* Enable flash write-protection and wait for completion. */
        qla24xx_write_flash_dword(ha, flash_conf_addr(ha, 0x101),
            ha->fdt_wrt_disable);
        for (cnt = 300; cnt &&
            qla24xx_read_flash_dword(ha, flash_conf_addr(ha, 0x005)) & BIT_0;
            cnt--) {
                udelay(10);
        }

skip_wrt_protect:
        /* Disable flash write. */
        WRT_REG_DWORD(&reg->ctrl_status,
            RD_REG_DWORD(&reg->ctrl_status) & ~CSRX_FLASH_ENABLE);
        RD_REG_DWORD(&reg->ctrl_status);        /* PCI Posting. */

        return QLA_SUCCESS;
}

static int
qla24xx_erase_sector(scsi_qla_host_t *vha, uint32_t fdata)
{
        struct qla_hw_data *ha = vha->hw;
        uint32_t start, finish;

        if (ha->flags.fac_supported) {
                start = fdata >> 2;
                finish = start + (ha->fdt_block_size >> 2) - 1;
                return qla81xx_fac_erase_sector(vha, flash_data_addr(ha,
                    start), flash_data_addr(ha, finish));
        }

        return qla24xx_write_flash_dword(ha, ha->fdt_erase_cmd,
            (fdata & 0xff00) | ((fdata << 16) & 0xff0000) |
            ((fdata >> 16) & 0xff));
}

static int
qla24xx_write_flash_data(scsi_qla_host_t *vha, uint32_t *dwptr, uint32_t faddr,
    uint32_t dwords)
{
        int ret;
        uint32_t liter;
        uint32_t sec_mask, rest_addr;
        uint32_t fdata;
        dma_addr_t optrom_dma;
        void *optrom = NULL;
        struct qla_hw_data *ha = vha->hw;

        /* Prepare burst-capable write on supported ISPs. */
        if ((IS_QLA25XX(ha) || IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
            IS_QLA27XX(ha)) &&
            !(faddr & 0xfff) && dwords > OPTROM_BURST_DWORDS) {
                optrom = dma_alloc_coherent(&ha->pdev->dev, OPTROM_BURST_SIZE,
                    &optrom_dma, GFP_KERNEL);
                if (!optrom) {
                        ql_log(ql_log_warn, vha, 0x7095,
                            "Unable to allocate "
                            "memory for optrom burst write (%x KB).\n",
                            OPTROM_BURST_SIZE / 1024);
                }
        }

        rest_addr = (ha->fdt_block_size >> 2) - 1;
        sec_mask = ~rest_addr;

        ret = qla24xx_unprotect_flash(vha);
        if (ret != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x7096,
                    "Unable to unprotect flash for update.\n");
                goto done;
        }

        for (liter = 0; liter < dwords; liter++, faddr++, dwptr++) {
                fdata = (faddr & sec_mask) << 2;

                /* Are we at the beginning of a sector? */
                if ((faddr & rest_addr) == 0) {
                        /* Do sector unprotect. */
                        if (ha->fdt_unprotect_sec_cmd)
                                qla24xx_write_flash_dword(ha,
                                    ha->fdt_unprotect_sec_cmd,
                                    (fdata & 0xff00) | ((fdata << 16) &
                                    0xff0000) | ((fdata >> 16) & 0xff));
                        ret = qla24xx_erase_sector(vha, fdata);
                        if (ret != QLA_SUCCESS) {
                                ql_dbg(ql_dbg_user, vha, 0x7007,
                                    "Unable to erase erase sector: address=%x.\n",
                                    faddr);
                                break;
                        }
                }

                /* Go with burst-write. */
                if (optrom && (liter + OPTROM_BURST_DWORDS) <= dwords) {
                        /* Copy data to DMA'ble buffer. */
                        memcpy(optrom, dwptr, OPTROM_BURST_SIZE);

                        ret = qla2x00_load_ram(vha, optrom_dma,
                            flash_data_addr(ha, faddr),
                            OPTROM_BURST_DWORDS);
                        if (ret != QLA_SUCCESS) {
                                ql_log(ql_log_warn, vha, 0x7097,
                                    "Unable to burst-write optrom segment "
                                    "(%x/%x/%llx).\n", ret,
                                    flash_data_addr(ha, faddr),
                                    (unsigned long long)optrom_dma);
                                ql_log(ql_log_warn, vha, 0x7098,
                                    "Reverting to slow-write.\n");

                                dma_free_coherent(&ha->pdev->dev,
                                    OPTROM_BURST_SIZE, optrom, optrom_dma);
                                optrom = NULL;
                        } else {
                                liter += OPTROM_BURST_DWORDS - 1;
                                faddr += OPTROM_BURST_DWORDS - 1;
                                dwptr += OPTROM_BURST_DWORDS - 1;
                                continue;
                        }
                }

                ret = qla24xx_write_flash_dword(ha,
                    flash_data_addr(ha, faddr), cpu_to_le32(*dwptr));
                if (ret != QLA_SUCCESS) {
                        ql_dbg(ql_dbg_user, vha, 0x7006,
                            "Unable to program flash address=%x data=%x.\n",
                            faddr, *dwptr);
                        break;
                }

                /* Do sector protect. */
                if (ha->fdt_unprotect_sec_cmd &&
                    ((faddr & rest_addr) == rest_addr))
                        qla24xx_write_flash_dword(ha,
                            ha->fdt_protect_sec_cmd,
                            (fdata & 0xff00) | ((fdata << 16) &
                            0xff0000) | ((fdata >> 16) & 0xff));
        }

        ret = qla24xx_protect_flash(vha);
        if (ret != QLA_SUCCESS)
                ql_log(ql_log_warn, vha, 0x7099,
                    "Unable to protect flash after update.\n");
done:
        if (optrom)
                dma_free_coherent(&ha->pdev->dev,
                    OPTROM_BURST_SIZE, optrom, optrom_dma);

        return ret;
}

uint8_t *
qla2x00_read_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        uint32_t i;
        uint16_t *wptr;
        struct qla_hw_data *ha = vha->hw;

        /* Word reads to NVRAM via registers. */
        wptr = (uint16_t *)buf;
        qla2x00_lock_nvram_access(ha);
        for (i = 0; i < bytes >> 1; i++, naddr++)
                wptr[i] = cpu_to_le16(qla2x00_get_nvram_word(ha,
                    naddr));
        qla2x00_unlock_nvram_access(ha);

        return buf;
}

uint8_t *
qla24xx_read_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        uint32_t i;
        uint32_t *dwptr;
        struct qla_hw_data *ha = vha->hw;

        if (IS_P3P_TYPE(ha))
                return  buf;

        /* Dword reads to flash. */
        dwptr = (uint32_t *)buf;
        for (i = 0; i < bytes >> 2; i++, naddr++)
                dwptr[i] = cpu_to_le32(qla24xx_read_flash_dword(ha,
                    nvram_data_addr(ha, naddr)));

        return buf;
}

int
qla2x00_write_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        int ret, stat;
        uint32_t i;
        uint16_t *wptr;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;

        ret = QLA_SUCCESS;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        qla2x00_lock_nvram_access(ha);

        /* Disable NVRAM write-protection. */
        stat = qla2x00_clear_nvram_protection(ha);

        wptr = (uint16_t *)buf;
        for (i = 0; i < bytes >> 1; i++, naddr++) {
                qla2x00_write_nvram_word(ha, naddr,
                    cpu_to_le16(*wptr));
                wptr++;
        }

        /* Enable NVRAM write-protection. */
        qla2x00_set_nvram_protection(ha, stat);

        qla2x00_unlock_nvram_access(ha);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        return ret;
}

int
qla24xx_write_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        int ret;
        uint32_t i;
        uint32_t *dwptr;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        ret = QLA_SUCCESS;

        if (IS_P3P_TYPE(ha))
                return ret;

        /* Enable flash write. */
        WRT_REG_DWORD(&reg->ctrl_status,
            RD_REG_DWORD(&reg->ctrl_status) | CSRX_FLASH_ENABLE);
        RD_REG_DWORD(&reg->ctrl_status);        /* PCI Posting. */

        /* Disable NVRAM write-protection. */
        qla24xx_write_flash_dword(ha, nvram_conf_addr(ha, 0x101), 0);
        qla24xx_write_flash_dword(ha, nvram_conf_addr(ha, 0x101), 0);

        /* Dword writes to flash. */
        dwptr = (uint32_t *)buf;
        for (i = 0; i < bytes >> 2; i++, naddr++, dwptr++) {
                ret = qla24xx_write_flash_dword(ha,
                    nvram_data_addr(ha, naddr), cpu_to_le32(*dwptr));
                if (ret != QLA_SUCCESS) {
                        ql_dbg(ql_dbg_user, vha, 0x709a,
                            "Unable to program nvram address=%x data=%x.\n",
                            naddr, *dwptr);
                        break;
                }
        }

        /* Enable NVRAM write-protection. */
        qla24xx_write_flash_dword(ha, nvram_conf_addr(ha, 0x101), 0x8c);

        /* Disable flash write. */
        WRT_REG_DWORD(&reg->ctrl_status,
            RD_REG_DWORD(&reg->ctrl_status) & ~CSRX_FLASH_ENABLE);
        RD_REG_DWORD(&reg->ctrl_status);        /* PCI Posting. */

        return ret;
}

uint8_t *
qla25xx_read_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        uint32_t i;
        uint32_t *dwptr;
        struct qla_hw_data *ha = vha->hw;

        /* Dword reads to flash. */
        dwptr = (uint32_t *)buf;
        for (i = 0; i < bytes >> 2; i++, naddr++)
                dwptr[i] = cpu_to_le32(qla24xx_read_flash_dword(ha,
                    flash_data_addr(ha, ha->flt_region_vpd_nvram | naddr)));

        return buf;
}

int
qla25xx_write_nvram_data(scsi_qla_host_t *vha, uint8_t *buf, uint32_t naddr,
    uint32_t bytes)
{
        struct qla_hw_data *ha = vha->hw;
#define RMW_BUFFER_SIZE (64 * 1024)
        uint8_t *dbuf;

        dbuf = vmalloc(RMW_BUFFER_SIZE);
        if (!dbuf)
                return QLA_MEMORY_ALLOC_FAILED;
        ha->isp_ops->read_optrom(vha, dbuf, ha->flt_region_vpd_nvram << 2,
            RMW_BUFFER_SIZE);
        memcpy(dbuf + (naddr << 2), buf, bytes);
        ha->isp_ops->write_optrom(vha, dbuf, ha->flt_region_vpd_nvram << 2,
            RMW_BUFFER_SIZE);
        vfree(dbuf);

        return QLA_SUCCESS;
}

static inline void
qla2x00_flip_colors(struct qla_hw_data *ha, uint16_t *pflags)
{
        if (IS_QLA2322(ha)) {
                /* Flip all colors. */
                if (ha->beacon_color_state == QLA_LED_ALL_ON) {
                        /* Turn off. */
                        ha->beacon_color_state = 0;
                        *pflags = GPIO_LED_ALL_OFF;
                } else {
                        /* Turn on. */
                        ha->beacon_color_state = QLA_LED_ALL_ON;
                        *pflags = GPIO_LED_RGA_ON;
                }
        } else {
                /* Flip green led only. */
                if (ha->beacon_color_state == QLA_LED_GRN_ON) {
                        /* Turn off. */
                        ha->beacon_color_state = 0;
                        *pflags = GPIO_LED_GREEN_OFF_AMBER_OFF;
                } else {
                        /* Turn on. */
                        ha->beacon_color_state = QLA_LED_GRN_ON;
                        *pflags = GPIO_LED_GREEN_ON_AMBER_OFF;
                }
        }
}

#define PIO_REG(h, r) ((h)->pio_address + offsetof(struct device_reg_2xxx, r))

void
qla2x00_beacon_blink(struct scsi_qla_host *vha)
{
        uint16_t gpio_enable;
        uint16_t gpio_data;
        uint16_t led_color = 0;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        if (IS_P3P_TYPE(ha))
                return;

        spin_lock_irqsave(&ha->hardware_lock, flags);

        /* Save the Original GPIOE. */
        if (ha->pio_address) {
                gpio_enable = RD_REG_WORD_PIO(PIO_REG(ha, gpioe));
                gpio_data = RD_REG_WORD_PIO(PIO_REG(ha, gpiod));
        } else {
                gpio_enable = RD_REG_WORD(&reg->gpioe);
                gpio_data = RD_REG_WORD(&reg->gpiod);
        }

        /* Set the modified gpio_enable values */
        gpio_enable |= GPIO_LED_MASK;

        if (ha->pio_address) {
                WRT_REG_WORD_PIO(PIO_REG(ha, gpioe), gpio_enable);
        } else {
                WRT_REG_WORD(&reg->gpioe, gpio_enable);
                RD_REG_WORD(&reg->gpioe);
        }

        qla2x00_flip_colors(ha, &led_color);

        /* Clear out any previously set LED color. */
        gpio_data &= ~GPIO_LED_MASK;

        /* Set the new input LED color to GPIOD. */
        gpio_data |= led_color;

        /* Set the modified gpio_data values */
        if (ha->pio_address) {
                WRT_REG_WORD_PIO(PIO_REG(ha, gpiod), gpio_data);
        } else {
                WRT_REG_WORD(&reg->gpiod, gpio_data);
                RD_REG_WORD(&reg->gpiod);
        }

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

int
qla2x00_beacon_on(struct scsi_qla_host *vha)
{
        uint16_t gpio_enable;
        uint16_t gpio_data;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
        ha->fw_options[1] |= FO1_DISABLE_GPIO6_7;

        if (qla2x00_set_fw_options(vha, ha->fw_options) != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x709b,
                    "Unable to update fw options (beacon on).\n");
                return QLA_FUNCTION_FAILED;
        }

        /* Turn off LEDs. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        if (ha->pio_address) {
                gpio_enable = RD_REG_WORD_PIO(PIO_REG(ha, gpioe));
                gpio_data = RD_REG_WORD_PIO(PIO_REG(ha, gpiod));
        } else {
                gpio_enable = RD_REG_WORD(&reg->gpioe);
                gpio_data = RD_REG_WORD(&reg->gpiod);
        }
        gpio_enable |= GPIO_LED_MASK;

        /* Set the modified gpio_enable values. */
        if (ha->pio_address) {
                WRT_REG_WORD_PIO(PIO_REG(ha, gpioe), gpio_enable);
        } else {
                WRT_REG_WORD(&reg->gpioe, gpio_enable);
                RD_REG_WORD(&reg->gpioe);
        }

        /* Clear out previously set LED colour. */
        gpio_data &= ~GPIO_LED_MASK;
        if (ha->pio_address) {
                WRT_REG_WORD_PIO(PIO_REG(ha, gpiod), gpio_data);
        } else {
                WRT_REG_WORD(&reg->gpiod, gpio_data);
                RD_REG_WORD(&reg->gpiod);
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

        /*
         * Let the per HBA timer kick off the blinking process based on
         * the following flags. No need to do anything else now.
         */
        ha->beacon_blink_led = 1;
        ha->beacon_color_state = 0;

        return QLA_SUCCESS;
}

int
qla2x00_beacon_off(struct scsi_qla_host *vha)
{
        int rval = QLA_SUCCESS;
        struct qla_hw_data *ha = vha->hw;

        ha->beacon_blink_led = 0;

        /* Set the on flag so when it gets flipped it will be off. */
        if (IS_QLA2322(ha))
                ha->beacon_color_state = QLA_LED_ALL_ON;
        else
                ha->beacon_color_state = QLA_LED_GRN_ON;

        ha->isp_ops->beacon_blink(vha); /* This turns green LED off */

        ha->fw_options[1] &= ~FO1_SET_EMPHASIS_SWING;
        ha->fw_options[1] &= ~FO1_DISABLE_GPIO6_7;

        rval = qla2x00_set_fw_options(vha, ha->fw_options);
        if (rval != QLA_SUCCESS)
                ql_log(ql_log_warn, vha, 0x709c,
                    "Unable to update fw options (beacon off).\n");
        return rval;
}


static inline void
qla24xx_flip_colors(struct qla_hw_data *ha, uint16_t *pflags)
{
        /* Flip all colors. */
        if (ha->beacon_color_state == QLA_LED_ALL_ON) {
                /* Turn off. */
                ha->beacon_color_state = 0;
                *pflags = 0;
        } else {
                /* Turn on. */
                ha->beacon_color_state = QLA_LED_ALL_ON;
                *pflags = GPDX_LED_YELLOW_ON | GPDX_LED_AMBER_ON;
        }
}

void
qla24xx_beacon_blink(struct scsi_qla_host *vha)
{
        uint16_t led_color = 0;
        uint32_t gpio_data;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        /* Save the Original GPIOD. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        gpio_data = RD_REG_DWORD(&reg->gpiod);

        /* Enable the gpio_data reg for update. */
        gpio_data |= GPDX_LED_UPDATE_MASK;

        WRT_REG_DWORD(&reg->gpiod, gpio_data);
        gpio_data = RD_REG_DWORD(&reg->gpiod);

        /* Set the color bits. */
        qla24xx_flip_colors(ha, &led_color);

        /* Clear out any previously set LED color. */
        gpio_data &= ~GPDX_LED_COLOR_MASK;

        /* Set the new input LED color to GPIOD. */
        gpio_data |= led_color;

        /* Set the modified gpio_data values. */
        WRT_REG_DWORD(&reg->gpiod, gpio_data);
        gpio_data = RD_REG_DWORD(&reg->gpiod);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static uint32_t
qla83xx_select_led_port(struct qla_hw_data *ha)
{
        uint32_t led_select_value = 0;

        if (!IS_QLA83XX(ha) && !IS_QLA27XX(ha))
                goto out;

        if (ha->port_no == 0)
                led_select_value = QLA83XX_LED_PORT0;
        else
                led_select_value = QLA83XX_LED_PORT1;

out:
        return led_select_value;
}

void
qla83xx_beacon_blink(struct scsi_qla_host *vha)
{
        uint32_t led_select_value;
        struct qla_hw_data *ha = vha->hw;
        uint16_t led_cfg[6];
        uint16_t orig_led_cfg[6];
        uint32_t led_10_value, led_43_value;

        if (!IS_QLA83XX(ha) && !IS_QLA81XX(ha) && !IS_QLA27XX(ha))
                return;

        if (!ha->beacon_blink_led)
                return;

        if (IS_QLA27XX(ha)) {
                qla2x00_write_ram_word(vha, 0x1003, 0x40000230);
                qla2x00_write_ram_word(vha, 0x1004, 0x40000230);
        } else if (IS_QLA2031(ha)) {
                led_select_value = qla83xx_select_led_port(ha);

                qla83xx_wr_reg(vha, led_select_value, 0x40000230);
                qla83xx_wr_reg(vha, led_select_value + 4, 0x40000230);
        } else if (IS_QLA8031(ha)) {
                led_select_value = qla83xx_select_led_port(ha);

                qla83xx_rd_reg(vha, led_select_value, &led_10_value);
                qla83xx_rd_reg(vha, led_select_value + 0x10, &led_43_value);
                qla83xx_wr_reg(vha, led_select_value, 0x01f44000);
                msleep(500);
                qla83xx_wr_reg(vha, led_select_value, 0x400001f4);
                msleep(1000);
                qla83xx_wr_reg(vha, led_select_value, led_10_value);
                qla83xx_wr_reg(vha, led_select_value + 0x10, led_43_value);
        } else if (IS_QLA81XX(ha)) {
                int rval;

                /* Save Current */
                rval = qla81xx_get_led_config(vha, orig_led_cfg);
                /* Do the blink */
                if (rval == QLA_SUCCESS) {
                        if (IS_QLA81XX(ha)) {
                                led_cfg[0] = 0x4000;
                                led_cfg[1] = 0x2000;
                                led_cfg[2] = 0;
                                led_cfg[3] = 0;
                                led_cfg[4] = 0;
                                led_cfg[5] = 0;
                        } else {
                                led_cfg[0] = 0x4000;
                                led_cfg[1] = 0x4000;
                                led_cfg[2] = 0x4000;
                                led_cfg[3] = 0x2000;
                                led_cfg[4] = 0;
                                led_cfg[5] = 0x2000;
                        }
                        rval = qla81xx_set_led_config(vha, led_cfg);
                        msleep(1000);
                        if (IS_QLA81XX(ha)) {
                                led_cfg[0] = 0x4000;
                                led_cfg[1] = 0x2000;
                                led_cfg[2] = 0;
                        } else {
                                led_cfg[0] = 0x4000;
                                led_cfg[1] = 0x2000;
                                led_cfg[2] = 0x4000;
                                led_cfg[3] = 0x4000;
                                led_cfg[4] = 0;
                                led_cfg[5] = 0x2000;
                        }
                        rval = qla81xx_set_led_config(vha, led_cfg);
                }
                /* On exit, restore original (presumes no status change) */
                qla81xx_set_led_config(vha, orig_led_cfg);
        }
}

int
qla24xx_beacon_on(struct scsi_qla_host *vha)
{
        uint32_t gpio_data;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        if (IS_P3P_TYPE(ha))
                return QLA_SUCCESS;

        if (IS_QLA8031(ha) || IS_QLA81XX(ha))
                goto skip_gpio; /* let blink handle it */

        if (ha->beacon_blink_led == 0) {
                /* Enable firmware for update */
                ha->fw_options[1] |= ADD_FO1_DISABLE_GPIO_LED_CTRL;

                if (qla2x00_set_fw_options(vha, ha->fw_options) != QLA_SUCCESS)
                        return QLA_FUNCTION_FAILED;

                if (qla2x00_get_fw_options(vha, ha->fw_options) !=
                    QLA_SUCCESS) {
                        ql_log(ql_log_warn, vha, 0x7009,
                            "Unable to update fw options (beacon on).\n");
                        return QLA_FUNCTION_FAILED;
                }

                if (IS_QLA2031(ha) || IS_QLA27XX(ha))
                        goto skip_gpio;

                spin_lock_irqsave(&ha->hardware_lock, flags);
                gpio_data = RD_REG_DWORD(&reg->gpiod);

                /* Enable the gpio_data reg for update. */
                gpio_data |= GPDX_LED_UPDATE_MASK;
                WRT_REG_DWORD(&reg->gpiod, gpio_data);
                RD_REG_DWORD(&reg->gpiod);

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

        /* So all colors blink together. */
        ha->beacon_color_state = 0;

skip_gpio:
        /* Let the per HBA timer kick off the blinking process. */
        ha->beacon_blink_led = 1;

        return QLA_SUCCESS;
}

int
qla24xx_beacon_off(struct scsi_qla_host *vha)
{
        uint32_t gpio_data;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;

        if (IS_P3P_TYPE(ha))
                return QLA_SUCCESS;

        ha->beacon_blink_led = 0;

        if (IS_QLA2031(ha) || IS_QLA27XX(ha))
                goto set_fw_options;

        if (IS_QLA8031(ha) || IS_QLA81XX(ha))
                return QLA_SUCCESS;

        ha->beacon_color_state = QLA_LED_ALL_ON;

        ha->isp_ops->beacon_blink(vha); /* Will flip to all off. */

        /* Give control back to firmware. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        gpio_data = RD_REG_DWORD(&reg->gpiod);

        /* Disable the gpio_data reg for update. */
        gpio_data &= ~GPDX_LED_UPDATE_MASK;
        WRT_REG_DWORD(&reg->gpiod, gpio_data);
        RD_REG_DWORD(&reg->gpiod);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);

set_fw_options:
        ha->fw_options[1] &= ~ADD_FO1_DISABLE_GPIO_LED_CTRL;

        if (qla2x00_set_fw_options(vha, ha->fw_options) != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x704d,
                    "Unable to update fw options (beacon on).\n");
                return QLA_FUNCTION_FAILED;
        }

        if (qla2x00_get_fw_options(vha, ha->fw_options) != QLA_SUCCESS) {
                ql_log(ql_log_warn, vha, 0x704e,
                    "Unable to update fw options (beacon on).\n");
                return QLA_FUNCTION_FAILED;
        }

        return QLA_SUCCESS;
}


/*
 * Flash support routines
 */

/**
 * qla2x00_flash_enable() - Setup flash for reading and writing.
 * @ha: HA context
 */
static void
qla2x00_flash_enable(struct qla_hw_data *ha)
{
        uint16_t data;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        data = RD_REG_WORD(&reg->ctrl_status);
        data |= CSR_FLASH_ENABLE;
        WRT_REG_WORD(&reg->ctrl_status, data);
        RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
}

/**
 * qla2x00_flash_disable() - Disable flash and allow RISC to run.
 * @ha: HA context
 */
static void
qla2x00_flash_disable(struct qla_hw_data *ha)
{
        uint16_t data;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        data = RD_REG_WORD(&reg->ctrl_status);
        data &= ~(CSR_FLASH_ENABLE);
        WRT_REG_WORD(&reg->ctrl_status, data);
        RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
}

/**
 * qla2x00_read_flash_byte() - Reads a byte from flash
 * @ha: HA context
 * @addr: Address in flash to read
 *
 * A word is read from the chip, but, only the lower byte is valid.
 *
 * Returns the byte read from flash @addr.
 */
static uint8_t
qla2x00_read_flash_byte(struct qla_hw_data *ha, uint32_t addr)
{
        uint16_t data;
        uint16_t bank_select;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        bank_select = RD_REG_WORD(&reg->ctrl_status);

        if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                /* Specify 64K address range: */
                /*  clear out Module Select and Flash Address bits [19:16]. */
                bank_select &= ~0xf8;
                bank_select |= addr >> 12 & 0xf0;
                bank_select |= CSR_FLASH_64K_BANK;
                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */

                WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
                data = RD_REG_WORD(&reg->flash_data);

                return (uint8_t)data;
        }

        /* Setup bit 16 of flash address. */
        if ((addr & BIT_16) && ((bank_select & CSR_FLASH_64K_BANK) == 0)) {
                bank_select |= CSR_FLASH_64K_BANK;
                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */
        } else if (((addr & BIT_16) == 0) &&
            (bank_select & CSR_FLASH_64K_BANK)) {
                bank_select &= ~(CSR_FLASH_64K_BANK);

                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */
        }

        /* Always perform IO mapped accesses to the FLASH registers. */
        if (ha->pio_address) {
                uint16_t data2;

                WRT_REG_WORD_PIO(PIO_REG(ha, flash_address), (uint16_t)addr);
                do {
                        data = RD_REG_WORD_PIO(PIO_REG(ha, flash_data));
                        barrier();
                        cpu_relax();
                        data2 = RD_REG_WORD_PIO(PIO_REG(ha, flash_data));
                } while (data != data2);
        } else {
                WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
                data = qla2x00_debounce_register(&reg->flash_data);
        }

        return (uint8_t)data;
}

/**
 * qla2x00_write_flash_byte() - Write a byte to flash
 * @ha: HA context
 * @addr: Address in flash to write
 * @data: Data to write
 */
static void
qla2x00_write_flash_byte(struct qla_hw_data *ha, uint32_t addr, uint8_t data)
{
        uint16_t bank_select;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        bank_select = RD_REG_WORD(&reg->ctrl_status);
        if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                /* Specify 64K address range: */
                /*  clear out Module Select and Flash Address bits [19:16]. */
                bank_select &= ~0xf8;
                bank_select |= addr >> 12 & 0xf0;
                bank_select |= CSR_FLASH_64K_BANK;
                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */

                WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
                WRT_REG_WORD(&reg->flash_data, (uint16_t)data);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */

                return;
        }

        /* Setup bit 16 of flash address. */
        if ((addr & BIT_16) && ((bank_select & CSR_FLASH_64K_BANK) == 0)) {
                bank_select |= CSR_FLASH_64K_BANK;
                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */
        } else if (((addr & BIT_16) == 0) &&
            (bank_select & CSR_FLASH_64K_BANK)) {
                bank_select &= ~(CSR_FLASH_64K_BANK);
                WRT_REG_WORD(&reg->ctrl_status, bank_select);
                RD_REG_WORD(&reg->ctrl_status); /* PCI Posting. */
        }

        /* Always perform IO mapped accesses to the FLASH registers. */
        if (ha->pio_address) {
                WRT_REG_WORD_PIO(PIO_REG(ha, flash_address), (uint16_t)addr);
                WRT_REG_WORD_PIO(PIO_REG(ha, flash_data), (uint16_t)data);
        } else {
                WRT_REG_WORD(&reg->flash_address, (uint16_t)addr);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
                WRT_REG_WORD(&reg->flash_data, (uint16_t)data);
                RD_REG_WORD(&reg->ctrl_status);         /* PCI Posting. */
        }
}

/**
 * qla2x00_poll_flash() - Polls flash for completion.
 * @ha: HA context
 * @addr: Address in flash to poll
 * @poll_data: Data to be polled
 * @man_id: Flash manufacturer ID
 * @flash_id: Flash ID
 *
 * This function polls the device until bit 7 of what is read matches data
 * bit 7 or until data bit 5 becomes a 1.  If that hapens, the flash ROM timed
 * out (a fatal error).  The flash book recommeds reading bit 7 again after
 * reading bit 5 as a 1.
 *
 * Returns 0 on success, else non-zero.
 */
static int
qla2x00_poll_flash(struct qla_hw_data *ha, uint32_t addr, uint8_t poll_data,
    uint8_t man_id, uint8_t flash_id)
{
        int status;
        uint8_t flash_data;
        uint32_t cnt;

        status = 1;

        /* Wait for 30 seconds for command to finish. */
        poll_data &= BIT_7;
        for (cnt = 3000000; cnt; cnt--) {
                flash_data = qla2x00_read_flash_byte(ha, addr);
                if ((flash_data & BIT_7) == poll_data) {
                        status = 0;
                        break;
                }

                if (man_id != 0x40 && man_id != 0xda) {
                        if ((flash_data & BIT_5) && cnt > 2)
                                cnt = 2;
                }
                udelay(10);
                barrier();
                cond_resched();
        }
        return status;
}

/**
 * qla2x00_program_flash_address() - Programs a flash address
 * @ha: HA context
 * @addr: Address in flash to program
 * @data: Data to be written in flash
 * @man_id: Flash manufacturer ID
 * @flash_id: Flash ID
 *
 * Returns 0 on success, else non-zero.
 */
static int
qla2x00_program_flash_address(struct qla_hw_data *ha, uint32_t addr,
    uint8_t data, uint8_t man_id, uint8_t flash_id)
{
        /* Write Program Command Sequence. */
        if (IS_OEM_001(ha)) {
                qla2x00_write_flash_byte(ha, 0xaaa, 0xaa);
                qla2x00_write_flash_byte(ha, 0x555, 0x55);
                qla2x00_write_flash_byte(ha, 0xaaa, 0xa0);
                qla2x00_write_flash_byte(ha, addr, data);
        } else {
                if (man_id == 0xda && flash_id == 0xc1) {
                        qla2x00_write_flash_byte(ha, addr, data);
                        if (addr & 0x7e)
                                return 0;
                } else {
                        qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
                        qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
                        qla2x00_write_flash_byte(ha, 0x5555, 0xa0);
                        qla2x00_write_flash_byte(ha, addr, data);
                }
        }

        udelay(150);

        /* Wait for write to complete. */
        return qla2x00_poll_flash(ha, addr, data, man_id, flash_id);
}

/**
 * qla2x00_erase_flash() - Erase the flash.
 * @ha: HA context
 * @man_id: Flash manufacturer ID
 * @flash_id: Flash ID
 *
 * Returns 0 on success, else non-zero.
 */
static int
qla2x00_erase_flash(struct qla_hw_data *ha, uint8_t man_id, uint8_t flash_id)
{
        /* Individual Sector Erase Command Sequence */
        if (IS_OEM_001(ha)) {
                qla2x00_write_flash_byte(ha, 0xaaa, 0xaa);
                qla2x00_write_flash_byte(ha, 0x555, 0x55);
                qla2x00_write_flash_byte(ha, 0xaaa, 0x80);
                qla2x00_write_flash_byte(ha, 0xaaa, 0xaa);
                qla2x00_write_flash_byte(ha, 0x555, 0x55);
                qla2x00_write_flash_byte(ha, 0xaaa, 0x10);
        } else {
                qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
                qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
                qla2x00_write_flash_byte(ha, 0x5555, 0x80);
                qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
                qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
                qla2x00_write_flash_byte(ha, 0x5555, 0x10);
        }

        udelay(150);

        /* Wait for erase to complete. */
        return qla2x00_poll_flash(ha, 0x00, 0x80, man_id, flash_id);
}

/**
 * qla2x00_erase_flash_sector() - Erase a flash sector.
 * @ha: HA context
 * @addr: Flash sector to erase
 * @sec_mask: Sector address mask
 * @man_id: Flash manufacturer ID
 * @flash_id: Flash ID
 *
 * Returns 0 on success, else non-zero.
 */
static int
qla2x00_erase_flash_sector(struct qla_hw_data *ha, uint32_t addr,
    uint32_t sec_mask, uint8_t man_id, uint8_t flash_id)
{
        /* Individual Sector Erase Command Sequence */
        qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
        qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
        qla2x00_write_flash_byte(ha, 0x5555, 0x80);
        qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
        qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
        if (man_id == 0x1f && flash_id == 0x13)
                qla2x00_write_flash_byte(ha, addr & sec_mask, 0x10);
        else
                qla2x00_write_flash_byte(ha, addr & sec_mask, 0x30);

        udelay(150);

        /* Wait for erase to complete. */
        return qla2x00_poll_flash(ha, addr, 0x80, man_id, flash_id);
}

/**
 * qla2x00_get_flash_manufacturer() - Read manufacturer ID from flash chip.
 * @ha:
 * @man_id: Flash manufacturer ID
 * @flash_id: Flash ID
 */
static void
qla2x00_get_flash_manufacturer(struct qla_hw_data *ha, uint8_t *man_id,
    uint8_t *flash_id)
{
        qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
        qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
        qla2x00_write_flash_byte(ha, 0x5555, 0x90);
        *man_id = qla2x00_read_flash_byte(ha, 0x0000);
        *flash_id = qla2x00_read_flash_byte(ha, 0x0001);
        qla2x00_write_flash_byte(ha, 0x5555, 0xaa);
        qla2x00_write_flash_byte(ha, 0x2aaa, 0x55);
        qla2x00_write_flash_byte(ha, 0x5555, 0xf0);
}

static void
qla2x00_read_flash_data(struct qla_hw_data *ha, uint8_t *tmp_buf,
        uint32_t saddr, uint32_t length)
{
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
        uint32_t midpoint, ilength;
        uint8_t data;

        midpoint = length / 2;

        WRT_REG_WORD(&reg->nvram, 0);
        RD_REG_WORD(&reg->nvram);
        for (ilength = 0; ilength < length; saddr++, ilength++, tmp_buf++) {
                if (ilength == midpoint) {
                        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                        RD_REG_WORD(&reg->nvram);
                }
                data = qla2x00_read_flash_byte(ha, saddr);
                if (saddr % 100)
                        udelay(10);
                *tmp_buf = data;
                cond_resched();
        }
}

static inline void
qla2x00_suspend_hba(struct scsi_qla_host *vha)
{
        int cnt;
        unsigned long flags;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        /* Suspend HBA. */
        scsi_block_requests(vha->host);
        ha->isp_ops->disable_intrs(ha);
        set_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);

        /* Pause RISC. */
        spin_lock_irqsave(&ha->hardware_lock, flags);
        WRT_REG_WORD(&reg->hccr, HCCR_PAUSE_RISC);
        RD_REG_WORD(&reg->hccr);
        if (IS_QLA2100(ha) || 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 {
                udelay(10);
        }
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static inline void
qla2x00_resume_hba(struct scsi_qla_host *vha)
{
        struct qla_hw_data *ha = vha->hw;

        /* Resume HBA. */
        clear_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);
        set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
        qla2xxx_wake_dpc(vha);
        qla2x00_wait_for_chip_reset(vha);
        scsi_unblock_requests(vha->host);
}

uint8_t *
qla2x00_read_optrom_data(struct scsi_qla_host *vha, uint8_t *buf,
    uint32_t offset, uint32_t length)
{
        uint32_t addr, midpoint;
        uint8_t *data;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        /* Suspend HBA. */
        qla2x00_suspend_hba(vha);

        /* Go with read. */
        midpoint = ha->optrom_size / 2;

        qla2x00_flash_enable(ha);
        WRT_REG_WORD(&reg->nvram, 0);
        RD_REG_WORD(&reg->nvram);               /* PCI Posting. */
        for (addr = offset, data = buf; addr < length; addr++, data++) {
                if (addr == midpoint) {
                        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                        RD_REG_WORD(&reg->nvram);       /* PCI Posting. */
                }

                *data = qla2x00_read_flash_byte(ha, addr);
        }
        qla2x00_flash_disable(ha);

        /* Resume HBA. */
        qla2x00_resume_hba(vha);

        return buf;
}

int
qla2x00_write_optrom_data(struct scsi_qla_host *vha, uint8_t *buf,
    uint32_t offset, uint32_t length)
{

        int rval;
        uint8_t man_id, flash_id, sec_number, data;
        uint16_t wd;
        uint32_t addr, liter, sec_mask, rest_addr;
        struct qla_hw_data *ha = vha->hw;
        struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;

        /* Suspend HBA. */
        qla2x00_suspend_hba(vha);

        rval = QLA_SUCCESS;
        sec_number = 0;

        /* Reset ISP chip. */
        WRT_REG_WORD(&reg->ctrl_status, CSR_ISP_SOFT_RESET);
        pci_read_config_word(ha->pdev, PCI_COMMAND, &wd);

        /* Go with write. */
        qla2x00_flash_enable(ha);
        do {    /* Loop once to provide quick error exit */
                /* Structure of flash memory based on manufacturer */
                if (IS_OEM_001(ha)) {
                        /* OEM variant with special flash part. */
                        man_id = flash_id = 0;
                        rest_addr = 0xffff;
                        sec_mask   = 0x10000;
                        goto update_flash;
                }
                qla2x00_get_flash_manufacturer(ha, &man_id, &flash_id);
                switch (man_id) {
                case 0x20: /* ST flash. */
                        if (flash_id == 0xd2 || flash_id == 0xe3) {
                                /*
                                 * ST m29w008at part - 64kb sector size with
                                 * 32kb,8kb,8kb,16kb sectors at memory address
                                 * 0xf0000.
                                 */
                                rest_addr = 0xffff;
                                sec_mask = 0x10000;
                                break;
                        }
                        /*
                         * ST m29w010b part - 16kb sector size
                         * Default to 16kb sectors
                         */
                        rest_addr = 0x3fff;
                        sec_mask = 0x1c000;
                        break;
                case 0x40: /* Mostel flash. */
                        /* Mostel v29c51001 part - 512 byte sector size. */
                        rest_addr = 0x1ff;
                        sec_mask = 0x1fe00;
                        break;
                case 0xbf: /* SST flash. */
                        /* SST39sf10 part - 4kb sector size. */
                        rest_addr = 0xfff;
                        sec_mask = 0x1f000;
                        break;
                case 0xda: /* Winbond flash. */
                        /* Winbond W29EE011 part - 256 byte sector size. */
                        rest_addr = 0x7f;
                        sec_mask = 0x1ff80;
                        break;
                case 0xc2: /* Macronix flash. */
                        /* 64k sector size. */
                        if (flash_id == 0x38 || flash_id == 0x4f) {
                                rest_addr = 0xffff;
                                sec_mask = 0x10000;
                                break;
                        }
                        /* Fall through... */

                case 0x1f: /* Atmel flash. */
                        /* 512k sector size. */
                        if (flash_id == 0x13) {
                                rest_addr = 0x7fffffff;
                                sec_mask =   0x80000000;
                                break;
                        }
                        /* Fall through... */

                case 0x01: /* AMD flash. */
                        if (flash_id == 0x38 || flash_id == 0x40 ||
                            flash_id == 0x4f) {
                                /* Am29LV081 part - 64kb sector size. */
                                /* Am29LV002BT part - 64kb sector size. */
                                rest_addr = 0xffff;
                                sec_mask = 0x10000;
                                break;
                        } else if (flash_id == 0x3e) {
                                /*
                                 * Am29LV008b part - 64kb sector size with
                                 * 32kb,8kb,8kb,16kb sector at memory address
                                 * h0xf0000.
                                 */
                                rest_addr = 0xffff;
                                sec_mask = 0x10000;
                                break;
                        } else if (flash_id == 0x20 || flash_id == 0x6e) {
                                /*
                                 * Am29LV010 part or AM29f010 - 16kb sector
                                 * size.
                                 */
                                rest_addr = 0x3fff;
                                sec_mask = 0x1c000;
                                break;
                        } else if (flash_id == 0x6d) {
                                /* Am29LV001 part - 8kb sector size. */
                                rest_addr = 0x1fff;
                                sec_mask = 0x1e000;
                                break;
                        }
                        /* fall through */
                default:
                        /* Default to 16 kb sector size. */
                        rest_addr = 0x3fff;
                        sec_mask = 0x1c000;
                        break;
                }

update_flash:
                if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                        if (qla2x00_erase_flash(ha, man_id, flash_id)) {
                                rval = QLA_FUNCTION_FAILED;
                                break;
                        }
                }

                for (addr = offset, liter = 0; liter < length; liter++,
                    addr++) {
                        data = buf[liter];
                        /* Are we at the beginning of a sector? */
                        if ((addr & rest_addr) == 0) {
                                if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
                                        if (addr >= 0x10000UL) {
                                                if (((addr >> 12) & 0xf0) &&
                                                    ((man_id == 0x01 &&
                                                        flash_id == 0x3e) ||
                                                     (man_id == 0x20 &&
                                                         flash_id == 0xd2))) {
                                                        sec_number++;
                                                        if (sec_number == 1) {
                                                                rest_addr =
                                                                    0x7fff;
                                                                sec_mask =
                                                                    0x18000;
                                                        } else if (
                                                            sec_number == 2 ||
                                                            sec_number == 3) {
                                                                rest_addr =
                                                                    0x1fff;
                                                                sec_mask =
                                                                    0x1e000;
                                                        } else if (
                                                            sec_number == 4) {
                                                                rest_addr =
                                                                    0x3fff;
                                                                sec_mask =
                                                                    0x1c000;
                                                        }
                                                }
                                        }
                                } else if (addr == ha->optrom_size / 2) {
                                        WRT_REG_WORD(&reg->nvram, NVR_SELECT);
                                        RD_REG_WORD(&reg->nvram);
                                }

                                if (flash_id == 0xda && man_id == 0xc1) {
                                        qla2x00_write_flash_byte(ha, 0x5555,
                                            0xaa);
                                        qla2x00_write_flash_byte(ha, 0x2aaa,
                                            0x55);
                                        qla2x00_write_flash_byte(ha, 0x5555,
                                            0xa0);
                                } else if (!IS_QLA2322(ha) && !IS_QLA6322(ha)) {
                                        /* Then erase it */
                                        if (qla2x00_erase_flash_sector(ha,
                                            addr, sec_mask, man_id,
                                            flash_id)) {
                                                rval = QLA_FUNCTION_FAILED;
                                                break;
                                        }
                                        if (man_id == 0x01 && flash_id == 0x6d)
                                                sec_number++;
                                }
                        }

                        if (man_id == 0x01 && flash_id == 0x6d) {
                                if (sec_number == 1 &&
                                    addr == (rest_addr - 1)) {
                                        rest_addr = 0x0fff;
                                        sec_mask   = 0x1f000;
                                } else if (sec_number == 3 && (addr & 0x7ffe)) {
                                        rest_addr = 0x3fff;
                                        sec_mask   = 0x1c000;
                                }
                        }

                        if (qla2x00_program_flash_address(ha, addr, data,
                            man_id, flash_id)) {
                                rval = QLA_FUNCTION_FAILED;
                                break;
                        }
                        cond_resched();
                }
        } while (0);
        qla2x00_flash_disable(ha);

        /* Resume HBA. */
        qla2x00_resume_hba(vha);

        return rval;
}

uint8_t *
qla24xx_read_optrom_data(struct scsi_qla_host *vha, uint8_t *buf,
    uint32_t offset, uint32_t length)
{
        struct qla_hw_data *ha = vha->hw;

        /* Suspend HBA. */
        scsi_block_requests(vha->host);
        set_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);

        /* Go with read. */
        qla24xx_read_flash_data(vha, (uint32_t *)buf, offset >> 2, length >> 2);

        /* Resume HBA. */
        clear_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);
        scsi_unblock_requests(vha->host);

        return buf;
}

int
qla24xx_write_optrom_data(struct scsi_qla_host *vha, uint8_t *buf,
    uint32_t offset, uint32_t length)
{
        int rval;
        struct qla_hw_data *ha = vha->hw;

        /* Suspend HBA. */
        scsi_block_requests(vha->host);
        set_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);

        /* Go with write. */
        rval = qla24xx_write_flash_data(vha, (uint32_t *)buf, offset >> 2,
            length >> 2);

        clear_bit(MBX_UPDATE_FLASH_ACTIVE, &ha->mbx_cmd_flags);
        scsi_unblock_requests(vha->host);

        return rval;
}

uint8_t *
qla25xx_read_optrom_data(struct scsi_qla_host *vha, uint8_t *buf,
    uint32_t offset, uint32_t length)
{
        int rval;
        dma_addr_t optrom_dma;
        void *optrom;
        uint8_t *pbuf;
        uint32_t faddr, left, burst;
        struct qla_hw_data *ha = vha->hw;

        if (IS_QLA25XX(ha) || IS_QLA81XX(ha) || IS_QLA83XX(ha) ||
            IS_QLA27XX(ha))
                goto try_fast;
        if (offset & 0xfff)
                goto slow_read;
        if (length < OPTROM_BURST_SIZE)
                goto slow_read;

try_fast:
        optrom = dma_alloc_coherent(&ha->pdev->dev, OPTROM_BURST_SIZE,
            &optrom_dma, GFP_KERNEL);
        if (!optrom) {
                ql_log(ql_log_warn, vha, 0x00cc,
                    "Unable to allocate memory for optrom burst read (%x KB).\n",
                    OPTROM_BURST_SIZE / 1024);
                goto slow_read;
        }

        pbuf = buf;
        faddr = offset >> 2;
        left = length >> 2;
        burst = OPTROM_BURST_DWORDS;
        while (left != 0) {
                if (burst > left)
                        burst = left;

                rval = qla2x00_dump_ram(vha, optrom_dma,
                    flash_data_addr(ha, faddr), burst);
                if (rval) {
                        ql_log(ql_log_warn, vha, 0x00f5,
                            "Unable to burst-read optrom segment (%x/%x/%llx).\n",
                            rval, flash_data_addr(ha, faddr),
                            (unsigned long long)optrom_dma);
                        ql_log(ql_log_warn, vha, 0x00f6,
                            "Reverting to slow-read.\n");

                        dma_free_coherent(&ha->pdev->dev, OPTROM_BURST_SIZE,
                            optrom, optrom_dma);
                        goto slow_read;
                }

                memcpy(pbuf, optrom, burst * 4);

                left -= burst;
                faddr += burst;
                pbuf += burst * 4;
        }

        dma_free_coherent(&ha->pdev->dev, OPTROM_BURST_SIZE, optrom,
            optrom_dma);

        return buf;

slow_read:
    return qla24xx_read_optrom_data(vha, buf, offset, length);
}

/**
 * qla2x00_get_fcode_version() - Determine an FCODE image's version.
 * @ha: HA context
 * @pcids: Pointer to the FCODE PCI data structure
 *
 * The process of retrieving the FCODE version information is at best
 * described as interesting.
 *
 * Within the first 100h bytes of the image an ASCII string is present
 * which contains several pieces of information including the FCODE
 * version.  Unfortunately it seems the only reliable way to retrieve
 * the version is by scanning for another sentinel within the string,
 * the FCODE build date:
 *
 *      ... 2.00.02 10/17/02 ...
 *
 * Returns QLA_SUCCESS on successful retrieval of version.
 */
static void
qla2x00_get_fcode_version(struct qla_hw_data *ha, uint32_t pcids)
{
        int ret = QLA_FUNCTION_FAILED;
        uint32_t istart, iend, iter, vend;
        uint8_t do_next, rbyte, *vbyte;

        memset(ha->fcode_revision, 0, sizeof(ha->fcode_revision));

        /* Skip the PCI data structure. */
        istart = pcids +
            ((qla2x00_read_flash_byte(ha, pcids + 0x0B) << 8) |
                qla2x00_read_flash_byte(ha, pcids + 0x0A));
        iend = istart + 0x100;
        do {
                /* Scan for the sentinel date string...eeewww. */
                do_next = 0;
                iter = istart;
                while ((iter < iend) && !do_next) {
                        iter++;
                        if (qla2x00_read_flash_byte(ha, iter) == '/') {
                                if (qla2x00_read_flash_byte(ha, iter + 2) ==
                                    '/')
                                        do_next++;
                                else if (qla2x00_read_flash_byte(ha,
                                    iter + 3) == '/')
                                        do_next++;
                        }
                }
                if (!do_next)
                        break;

                /* Backtrack to previous ' ' (space). */
                do_next = 0;
                while ((iter > istart) && !do_next) {
                        iter--;
                        if (qla2x00_read_flash_byte(ha, iter) == ' ')
                                do_next++;
                }
                if (!do_next)
                        break;

                /*
                 * Mark end of version tag, and find previous ' ' (space) or
                 * string length (recent FCODE images -- major hack ahead!!!).
                 */
                vend = iter - 1;
                do_next = 0;
                while ((iter > istart) && !do_next) {
                        iter--;
                        rbyte = qla2x00_read_flash_byte(ha, iter);
                        if (rbyte == ' ' || rbyte == 0xd || rbyte == 0x10)
                                do_next++;
                }
                if (!do_next)
                        break;

                /* Mark beginning of version tag, and copy data. */
                iter++;
                if ((vend - iter) &&
                    ((vend - iter) < sizeof(ha->fcode_revision))) {
                        vbyte = ha->fcode_revision;
                        while (iter <= vend) {
                                *vbyte++ = qla2x00_read_flash_byte(ha, iter);
                                iter++;
                        }
                        ret = QLA_SUCCESS;
                }
        } while (0);

        if (ret != QLA_SUCCESS)
                memset(ha->fcode_revision, 0, sizeof(ha->fcode_revision));
}

int
qla2x00_get_flash_version(scsi_qla_host_t *vha, void *mbuf)
{
        int ret = QLA_SUCCESS;
        uint8_t code_type, last_image;
        uint32_t pcihdr, pcids;
        uint8_t *dbyte;
        uint16_t *dcode;
        struct qla_hw_data *ha = vha->hw;

        if (!ha->pio_address || !mbuf)
                return QLA_FUNCTION_FAILED;

        memset(ha->bios_revision, 0, sizeof(ha->bios_revision));
        memset(ha->efi_revision, 0, sizeof(ha->efi_revision));
        memset(ha->fcode_revision, 0, sizeof(ha->fcode_revision));
        memset(ha->fw_revision, 0, sizeof(ha->fw_revision));

        qla2x00_flash_enable(ha);

        /* Begin with first PCI expansion ROM header. */
        pcihdr = 0;
        last_image = 1;
        do {
                /* Verify PCI expansion ROM header. */
                if (qla2x00_read_flash_byte(ha, pcihdr) != 0x55 ||
                    qla2x00_read_flash_byte(ha, pcihdr + 0x01) != 0xaa) {
                        /* No signature */
                        ql_log(ql_log_fatal, vha, 0x0050,
                            "No matching ROM signature.\n");
                        ret = QLA_FUNCTION_FAILED;
                        break;
                }

                /* Locate PCI data structure. */
                pcids = pcihdr +
                    ((qla2x00_read_flash_byte(ha, pcihdr + 0x19) << 8) |
                        qla2x00_read_flash_byte(ha, pcihdr + 0x18));

                /* Validate signature of PCI data structure. */
                if (qla2x00_read_flash_byte(ha, pcids) != 'P' ||
                    qla2x00_read_flash_byte(ha, pcids + 0x1) != 'C' ||
                    qla2x00_read_flash_byte(ha, pcids + 0x2) != 'I' ||
                    qla2x00_read_flash_byte(ha, pcids + 0x3) != 'R') {
                        /* Incorrect header. */
                        ql_log(ql_log_fatal, vha, 0x0051,
                            "PCI data struct not found pcir_adr=%x.\n", pcids);
                        ret = QLA_FUNCTION_FAILED;
                        break;
                }

                /* Read version */
                code_type = qla2x00_read_flash_byte(ha, pcids + 0x14);
                switch (code_type) {
                case ROM_CODE_TYPE_BIOS:
                        /* Intel x86, PC-AT compatible. */
                        ha->bios_revision[0] =
                            qla2x00_read_flash_byte(ha, pcids + 0x12);
                        ha->bios_revision[1] =
                            qla2x00_read_flash_byte(ha, pcids + 0x13);
                        ql_dbg(ql_dbg_init, vha, 0x0052,
                            "Read BIOS %d.%d.\n",
                            ha->bios_revision[1], ha->bios_revision[0]);
                        break;
                case ROM_CODE_TYPE_FCODE:
                        /* Open Firmware standard for PCI (FCode). */
                        /* Eeeewww... */
                        qla2x00_get_fcode_version(ha, pcids);
                        break;
                case ROM_CODE_TYPE_EFI:
                        /* Extensible Firmware Interface (EFI). */
                        ha->efi_revision[0] =
                            qla2x00_read_flash_byte(ha, pcids + 0x12);
                        ha->efi_revision[1] =
                            qla2x00_read_flash_byte(ha, pcids + 0x13);
                        ql_dbg(ql_dbg_init, vha, 0x0053,
                            "Read EFI %d.%d.\n",
                            ha->efi_revision[1], ha->efi_revision[0]);
                        break;
                default:
                        ql_log(ql_log_warn, vha, 0x0054,
                            "Unrecognized code type %x at pcids %x.\n",
                            code_type, pcids);
                        break;
                }

                last_image = qla2x00_read_flash_byte(ha, pcids + 0x15) & BIT_7;

                /* Locate next PCI expansion ROM. */
                pcihdr += ((qla2x00_read_flash_byte(ha, pcids + 0x11) << 8) |
                    qla2x00_read_flash_byte(ha, pcids + 0x10)) * 512;
        } while (!last_image);

        if (IS_QLA2322(ha)) {
                /* Read firmware image information. */
                memset(ha->fw_revision, 0, sizeof(ha->fw_revision));
                dbyte = mbuf;
                memset(dbyte, 0, 8);
                dcode = (uint16_t *)dbyte;

                qla2x00_read_flash_data(ha, dbyte, ha->flt_region_fw * 4 + 10,
                    8);
                ql_dbg(ql_dbg_init + ql_dbg_buffer, vha, 0x010a,
                    "Dumping fw "
                    "ver from flash:.\n");
                ql_dump_buffer(ql_dbg_init + ql_dbg_buffer, vha, 0x010b,
                    (uint8_t *)dbyte, 8);

                if ((dcode[0] == 0xffff && dcode[1] == 0xffff &&
                    dcode[2] == 0xffff && dcode[3] == 0xffff) ||
                    (dcode[0] == 0 && dcode[1] == 0 && dcode[2] == 0 &&
                    dcode[3] == 0)) {
                        ql_log(ql_log_warn, vha, 0x0057,
                            "Unrecognized fw revision at %x.\n",
                            ha->flt_region_fw * 4);
                } else {
                        /* values are in big endian */
                        ha->fw_revision[0] = dbyte[0] << 16 | dbyte[1];
                        ha->fw_revision[1] = dbyte[2] << 16 | dbyte[3];
                        ha->fw_revision[2] = dbyte[4] << 16 | dbyte[5];
                        ql_dbg(ql_dbg_init, vha, 0x0058,
                            "FW Version: "
                            "%d.%d.%d.\n", ha->fw_revision[0],
                            ha->fw_revision[1], ha->fw_revision[2]);
                }
        }

        qla2x00_flash_disable(ha);

        return ret;
}

int
qla82xx_get_flash_version(scsi_qla_host_t *vha, void *mbuf)
{
        int ret = QLA_SUCCESS;
        uint32_t pcihdr, pcids;
        uint32_t *dcode;
        uint8_t *bcode;
        uint8_t code_type, last_image;
        struct qla_hw_data *ha = vha->hw;

        if (!mbuf)
                return QLA_FUNCTION_FAILED;

        memset(ha->bios_revision, 0, sizeof(ha->bios_revision));
        memset(ha->efi_revision, 0, sizeof(ha->efi_revision));
        memset(ha->fcode_revision, 0, sizeof(ha->fcode_revision));
        memset(ha->fw_revision, 0, sizeof(ha->fw_revision));

        dcode = mbuf;

        /* Begin with first PCI expansion ROM header. */
        pcihdr = ha->flt_region_boot << 2;
        last_image = 1;
        do {
                /* Verify PCI expansion ROM header. */
                ha->isp_ops->read_optrom(vha, (uint8_t *)dcode, pcihdr,
                    0x20 * 4);
                bcode = mbuf + (pcihdr % 4);
                if (bcode[0x0] != 0x55 || bcode[0x1] != 0xaa) {
                        /* No signature */
                        ql_log(ql_log_fatal, vha, 0x0154,
                            "No matching ROM signature.\n");
                        ret = QLA_FUNCTION_FAILED;
                        break;
                }

                /* Locate PCI data structure. */
                pcids = pcihdr + ((bcode[0x19] << 8) | bcode[0x18]);

                ha->isp_ops->read_optrom(vha, (uint8_t *)dcode, pcids,
                    0x20 * 4);
                bcode = mbuf + (pcihdr % 4);

                /* Validate signature of PCI data structure. */
                if (bcode[0x0] != 'P' || bcode[0x1] != 'C' ||
                    bcode[0x2] != 'I' || bcode[0x3] != 'R') {
                        /* Incorrect header. */
                        ql_log(ql_log_fatal, vha, 0x0155,
                            "PCI data struct not found pcir_adr=%x.\n", pcids);
                        ret = QLA_FUNCTION_FAILED;
                        break;
                }

                /* Read version */
                code_type = bcode[0x14];
                switch (code_type) {
                case ROM_CODE_TYPE_BIOS:
                        /* Intel x86, PC-AT compatible. */
                        ha->bios_revision[0] = bcode[0x12];
                        ha->bios_revision[1] = bcode[0x13];
                        ql_dbg(ql_dbg_init, vha, 0x0156,
                            "Read BIOS %d.%d.\n",
                            ha->bios_revision[1], ha->bios_revision[0]);
                        break;
                case ROM_CODE_TYPE_FCODE:
                        /* Open Firmware standard for PCI (FCode). */
                        ha->fcode_revision[0] = bcode[0x12];
                        ha->fcode_revision[1] = bcode[0x13];
                        ql_dbg(ql_dbg_init, vha, 0x0157,
                            "Read FCODE %d.%d.\n",
                            ha->fcode_revision[1], ha->fcode_revision[0]);
                        break;
                case ROM_CODE_TYPE_EFI:
                        /* Extensible Firmware Interface (EFI). */
                        ha->efi_revision[0] = bcode[0x12];
                        ha->efi_revision[1] = bcode[0x13];
                        ql_dbg(ql_dbg_init, vha, 0x0158,
                            "Read EFI %d.%d.\n",
                            ha->efi_revision[1], ha->efi_revision[0]);
                        break;
                default:
                        ql_log(ql_log_warn, vha, 0x0159,
                            "Unrecognized code type %x at pcids %x.\n",
                            code_type, pcids);
                        break;
                }

                last_image = bcode[0x15] & BIT_7;

                /* Locate next PCI expansion ROM. */
                pcihdr += ((bcode[0x11] << 8) | bcode[0x10]) * 512;
        } while (!last_image);

        /* Read firmware image information. */
        memset(ha->fw_revision, 0, sizeof(ha->fw_revision));
        dcode = mbuf;
        ha->isp_ops->read_optrom(vha, (uint8_t *)dcode, ha->flt_region_fw << 2,
            0x20);
        bcode = mbuf + (pcihdr % 4);

        /* Validate signature of PCI data structure. */