/*      $NetBSD: rf_compat32.c,v 1.9 2021/12/11 19:24:21 mrg Exp $      */

/*
 * Copyright (c) 2017 Matthew R. Green
 * 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 AUTHOR ``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 AUTHOR 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.
 */

#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/compat_stub.h>

#include <dev/raidframe/raidframeio.h>
#include <dev/raidframe/raidframevar.h>

#include "rf_raid.h"
#include "rf_kintf.h"
#include "rf_compat32.h"

#include <compat/netbsd32/netbsd32.h>

typedef netbsd32_int64 RF_SectorNum_t32;
typedef netbsd32_int64 RF_StripeNum_t32;

/* from <dev/raidframe/raidframevar.h> */
typedef struct RF_Config_s32 {
        RF_RowCol_t numCol, numSpare;           /* number of rows, columns,
                                                 * and spare disks */
        dev_t   devs[RF_MAXROW][RF_MAXCOL];     /* device numbers for disks
                                                 * comprising array */
        char    devnames[RF_MAXROW][RF_MAXCOL][50];     /* device names */
        dev_t   spare_devs[RF_MAXSPARE];        /* device numbers for spare
                                                 * disks */
        char    spare_names[RF_MAXSPARE][50];   /* device names */
        RF_SectorNum_t32 sectPerSU;     /* sectors per stripe unit */
        RF_StripeNum_t32 SUsPerPU;/* stripe units per parity unit */
        RF_StripeNum_t32 SUsPerRU;/* stripe units per reconstruction unit */
        RF_ParityConfig_t parityConfig; /* identifies the RAID architecture to
                                         * be used */
        RF_DiskQueueType_t diskQueueType;       /* 'f' = fifo, 'c' = cvscan,
                                                 * not used in kernel */
        char    maxOutstandingDiskReqs; /* # concurrent reqs to be sent to a
                                         * disk.  not used in kernel. */
        char    debugVars[RF_MAXDBGV][50];      /* space for specifying debug
                                                 * variables & their values */
        unsigned int layoutSpecificSize;        /* size in bytes of
                                                 * layout-specific info */
        netbsd32_pointer_t   layoutSpecific;    /* a pointer to a layout-specific structure to
                                 * be copied in */
        int     force;                          /* if !0, ignore many fatal
                                                   configuration conditions */
        /*
           "force" is used to override cases where the component labels would
           indicate that configuration should not proceed without user
           intervention
         */
} RF_Config_t32;

static int
rf_config_netbsd32(struct raid_softc *rs, void *data)
{
        RF_Config_t32 *u_cfg32 = NETBSD32PTR64(*(netbsd32_pointer_t *)data);
        RF_Config_t *k_cfg;
        RF_Config_t32 *k_cfg32;
        int rv;

        k_cfg32 = RF_Malloc(sizeof(*k_cfg32));
        if (k_cfg32 == NULL)
                return ENOMEM;

        rv = copyin(u_cfg32, k_cfg32, sizeof(RF_Config_t32));
        if (rv) {
                RF_Free(k_cfg32, sizeof(RF_Config_t32));
                return ENOMEM;
        }

        k_cfg = RF_Malloc(sizeof(*k_cfg));
        if (k_cfg == NULL) {
                RF_Free(k_cfg32, sizeof(RF_Config_t32));
                return ENOMEM;
        }
        k_cfg->numCol = k_cfg32->numCol;
        k_cfg->numSpare = k_cfg32->numSpare;
        memcpy(k_cfg->devs, k_cfg32->devs, sizeof(k_cfg->devs));
        memcpy(k_cfg->devnames, k_cfg32->devnames, sizeof(k_cfg->devnames));
        memcpy(k_cfg->spare_devs, k_cfg32->spare_devs,
            sizeof(k_cfg->spare_devs));
        memcpy(k_cfg->spare_names, k_cfg32->spare_names,
            sizeof(k_cfg->spare_names));
        k_cfg->sectPerSU = k_cfg32->sectPerSU;
        k_cfg->SUsPerPU = k_cfg32->SUsPerPU;
        k_cfg->SUsPerRU = k_cfg32->SUsPerRU;
        k_cfg->parityConfig = k_cfg32->parityConfig;
        memcpy(k_cfg->diskQueueType, k_cfg32->diskQueueType,
            sizeof(k_cfg->diskQueueType));
        k_cfg->maxOutstandingDiskReqs = k_cfg32->maxOutstandingDiskReqs;
        memcpy(k_cfg->debugVars, k_cfg32->debugVars, sizeof(k_cfg->debugVars));
        k_cfg->layoutSpecificSize = k_cfg32->layoutSpecificSize;
        k_cfg->layoutSpecific = NETBSD32PTR64(k_cfg32->layoutSpecific);
        k_cfg->force = k_cfg32->force;

        return rf_construct(rs, k_cfg);
}

static int
rf_get_info_netbsd32(RF_Raid_t *raidPtr, void *data)
{
        int retcode;
        void *ucfgp = NETBSD32PTR64(*(netbsd32_pointer_t *)data);

        RF_DeviceConfig_t *d_cfg = RF_Malloc(sizeof(*d_cfg));
        if (d_cfg == NULL)
                return ENOMEM;

        retcode = rf_get_info(raidPtr, d_cfg);
        if (retcode == 0) {
            retcode = copyout(d_cfg, ucfgp, sizeof(*d_cfg));
        }
        RF_Free(d_cfg, sizeof(RF_DeviceConfig_t));
        return retcode;
}

static int
raidframe_netbsd32_ioctl(struct raid_softc *rs, u_long cmd, void *data)
{
        RF_Raid_t *raidPtr = rf_get_raid(rs);
 
        switch (cmd) {
        case RAIDFRAME_GET_INFO32:
                if (!rf_inited(rs))
                        return ENXIO;
                return rf_get_info_netbsd32(raidPtr, data);
        case RAIDFRAME_CONFIGURE32:
                return rf_config_netbsd32(rs, data);
        default:
                return EPASSTHROUGH;
        }
}


static void
raidframe_netbsd32_init(void)
{
  
        MODULE_HOOK_SET(raidframe_netbsd32_ioctl_hook,
            raidframe_netbsd32_ioctl);
}
 
static void
raidframe_netbsd32_fini(void)
{
 
        MODULE_HOOK_UNSET(raidframe_netbsd32_ioctl_hook);
}

MODULE(MODULE_CLASS_EXEC, compat_netbsd32_raid, "raid,compat_netbsd32");

static int
compat_netbsd32_raid_modcmd(modcmd_t cmd, void *arg)
{

        switch (cmd) {
        case MODULE_CMD_INIT:
                raidframe_netbsd32_init();
                return 0;
        case MODULE_CMD_FINI:
                raidframe_netbsd32_fini();
                return 0;
        default:
                return ENOTTY;
        }
}