/*
 * Copyright (c) 2009-2016 Solarflare Communications Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of the FreeBSD Project.
 */

#include <sys/types.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/stream.h>
#include <sys/dlpi.h>

#include "sfxge.h"

static int
sfxge_nvram_rw(sfxge_t *sp, sfxge_nvram_ioc_t *snip, efx_nvram_type_t type,
    boolean_t write)
{
        int (*op)(efx_nic_t *, efx_nvram_type_t, unsigned int, caddr_t, size_t);
        efx_nic_t *enp = sp->s_enp;
        size_t chunk_size;
        off_t off;
        int rc;

        op = (write) ? efx_nvram_write_chunk : efx_nvram_read_chunk;

        if ((rc = efx_nvram_rw_start(enp, type, &chunk_size)) != 0)
                goto fail1;

        off = 0;
        while (snip->sni_size) {
                size_t len = MIN(chunk_size, snip->sni_size);
                caddr_t buf = (caddr_t)(&snip->sni_data[off]);

                if ((rc = op(enp, type, snip->sni_offset + off, buf, len)) != 0)
                        goto fail2;

                snip->sni_size -= len;
                off += len;
        }

        efx_nvram_rw_finish(enp, type);
        return (0);

fail2:
        DTRACE_PROBE(fail2);
        efx_nvram_rw_finish(enp, type);
fail1:
        DTRACE_PROBE1(fail1, int, rc);
        return (rc);
}


static int
sfxge_nvram_erase(sfxge_t *sp, sfxge_nvram_ioc_t *snip, efx_nvram_type_t type)
{
        efx_nic_t *enp = sp->s_enp;
        size_t chunk_size;
        int rc;
        _NOTE(ARGUNUSED(snip));

        if ((rc = efx_nvram_rw_start(enp, type, &chunk_size)) != 0)
                goto fail1;

        if ((rc = efx_nvram_erase(enp, type)) != 0)
                goto fail2;

        efx_nvram_rw_finish(enp, type);
        return (0);

fail2:
        DTRACE_PROBE(fail2);
        efx_nvram_rw_finish(enp, type);
fail1:
        DTRACE_PROBE1(fail1, int, rc);
        return (rc);
}

int
sfxge_nvram_ioctl(sfxge_t *sp, sfxge_nvram_ioc_t *snip)
{
        efx_nic_t *enp = sp->s_enp;
        efx_nvram_type_t type;
        int rc;

        switch (snip->sni_type) {
        case SFXGE_NVRAM_TYPE_BOOTROM:
                type = EFX_NVRAM_BOOTROM;
                break;
        case SFXGE_NVRAM_TYPE_BOOTROM_CFG:
                type = EFX_NVRAM_BOOTROM_CFG;
                break;
        case SFXGE_NVRAM_TYPE_MC:
                type = EFX_NVRAM_MC_FIRMWARE;
                break;
        case SFXGE_NVRAM_TYPE_MC_GOLDEN:
                type = EFX_NVRAM_MC_GOLDEN;
                if (snip->sni_op == SFXGE_NVRAM_OP_WRITE ||
                    snip->sni_op == SFXGE_NVRAM_OP_ERASE ||
                    snip->sni_op == SFXGE_NVRAM_OP_SET_VER) {
                        rc = ENOTSUP;
                        goto fail1;
                }
                break;
        case SFXGE_NVRAM_TYPE_PHY:
                type = EFX_NVRAM_PHY;
                break;
        case SFXGE_NVRAM_TYPE_NULL_PHY:
                type = EFX_NVRAM_NULLPHY;
                break;
        case SFXGE_NVRAM_TYPE_FPGA: /* PTP timestamping FPGA */
                type = EFX_NVRAM_FPGA;
                break;
        case SFXGE_NVRAM_TYPE_FCFW:
                type = EFX_NVRAM_FCFW;
                break;
        case SFXGE_NVRAM_TYPE_CPLD:
                type = EFX_NVRAM_CPLD;
                break;
        case SFXGE_NVRAM_TYPE_FPGA_BACKUP:
                type = EFX_NVRAM_FPGA_BACKUP;
                break;
        case SFXGE_NVRAM_TYPE_DYNAMIC_CFG:
                type = EFX_NVRAM_DYNAMIC_CFG;
                break;
        default:
                rc = EINVAL;
                goto fail2;
        }

        if (snip->sni_size > sizeof (snip->sni_data)) {
                rc = ENOSPC;
                goto fail3;
        }

        switch (snip->sni_op) {
        case SFXGE_NVRAM_OP_SIZE:
        {
                size_t size;
                if ((rc = efx_nvram_size(enp, type, &size)) != 0)
                        goto fail4;
                snip->sni_size = (uint32_t)size;
                break;
        }
        case SFXGE_NVRAM_OP_READ:
                if ((rc = sfxge_nvram_rw(sp, snip, type, B_FALSE)) != 0)
                        goto fail4;
                break;
        case SFXGE_NVRAM_OP_WRITE:
                if ((rc = sfxge_nvram_rw(sp, snip, type, B_TRUE)) != 0)
                        goto fail4;
                break;
        case SFXGE_NVRAM_OP_ERASE:
                if ((rc = sfxge_nvram_erase(sp, snip, type)) != 0)
                        goto fail4;
                break;
        case SFXGE_NVRAM_OP_GET_VER:
                if ((rc = efx_nvram_get_version(enp, type, &snip->sni_subtype,
                    &snip->sni_version[0])) != 0)
                        goto fail4;
                break;
        case SFXGE_NVRAM_OP_SET_VER:
                if ((rc = efx_nvram_set_version(enp, type,
                    &snip->sni_version[0])) != 0)
                        goto fail4;
                break;
        default:
                rc = ENOTSUP;
                goto fail5;
        }

        return (0);

fail5:
        DTRACE_PROBE(fail5);
fail4:
        DTRACE_PROBE(fail4);
fail3:
        DTRACE_PROBE(fail3);
fail2:
        DTRACE_PROBE(fail2);
fail1:
        DTRACE_PROBE1(fail1, int, rc);

        return (rc);
}