/*      $NetBSD: pciide.c,v 1.9 2015/07/11 10:32:45 kamil Exp $ */

/*-
* Copyright (c) 2003 The NetBSD Foundation, 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#include <sys/types.h>
#include <lib/libsa/stand.h>
#include <mips/cpuregs.h>

#include "boot.h"
#include "wdvar.h"

#define COBALT_IO_SPACE_BASE    0x10000000      /* XXX VT82C586 ISA I/O space */

int
pciide_init(struct wdc_channel *chp, u_int *unit)
{
       uint32_t cmdreg, ctlreg;
       int i, compatchan = 0;

       /*
        * two channels per chip, two drives per channel
        */
       compatchan = *unit / PCIIDE_CHANNEL_NDEV;
       if (compatchan >= PCIIDE_NUM_CHANNELS)
               return (ENXIO);
       *unit %= PCIIDE_CHANNEL_NDEV;

       DPRINTF(("[pciide] unit: %d, channel: %d\n", *unit, compatchan));

       /*
        * XXX map?
        */
       cmdreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE +
           PCIIDE_COMPAT_CMD_BASE(compatchan));
       ctlreg = MIPS_PHYS_TO_KSEG1(COBALT_IO_SPACE_BASE +
           PCIIDE_COMPAT_CTL_BASE(compatchan));

       /* set up cmd registers */
       chp->c_cmdbase = (uint8_t *)cmdreg;
       chp->c_data = (uint16_t *)(cmdreg + wd_data);
       for (i = 0; i < WDC_NPORTS; i++)
               chp->c_cmdreg[i] = chp->c_cmdbase + i;
       /* set up shadow registers */
       chp->c_cmdreg[wd_status]   = chp->c_cmdreg[wd_command];
       chp->c_cmdreg[wd_features] = chp->c_cmdreg[wd_precomp];
       /* set up ctl registers */
       chp->c_ctlbase = (uint8_t *)ctlreg;

       return 0;
}