/*      $NetBSD: wdvar.h,v 1.9 2010/01/10 16:20:45 tsutsui Exp $        */

/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* Copyright (c) 2001 Dynarc AB, Sweden. All rights reserved.
*
* This code is derived from software written by Anders Magnusson,
* [email protected]
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* 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.
*/

#ifndef _STAND_WDVAR_H
#define _STAND_WDVAR_H

#include <dev/ic/wdcreg.h>
#include <dev/ata/atareg.h>
#include <dev/pci/pciidereg.h>

#include <mips/cpuregs.h>

#include <sys/disklabel.h>
#include <sys/bootblock.h>

#define WDC_TIMEOUT             2000000
#define PCIIDE_CHANNEL_NDEV     2
#define NUNITS                  (PCIIDE_CHANNEL_NDEV * PCIIDE_NUM_CHANNELS)
#define WDC_NPORTS              8       /* XXX */
#define WDC_NSHADOWREG          2       /* XXX */

struct wdc_channel {
       volatile uint8_t *c_cmdbase;
       volatile uint8_t *c_ctlbase;
       volatile uint8_t *c_cmdreg[WDC_NPORTS + WDC_NSHADOWREG];
       volatile uint16_t *c_data;

       uint8_t compatchan;
};

#define WDC_READ_REG(chp, reg)          *(chp)->c_cmdreg[(reg)]
#define WDC_WRITE_REG(chp, reg, val)    *(chp)->c_cmdreg[(reg)] = (val)
#define WDC_READ_CTLREG(chp, reg)       (chp)->c_ctlbase[(reg)]
#define WDC_WRITE_CTLREG(chp, reg, val) (chp)->c_ctlbase[(reg)] = (val)
#define WDC_READ_DATA(chp)              *(chp)->c_data

struct wd_softc {
#define WDF_LBA         0x0001
#define WDF_LBA48       0x0002
       uint16_t sc_flags;

       u_int sc_part;
       u_int sc_unit;

       uint64_t sc_capacity;
       uint32_t sc_capacity28;

       struct ataparams sc_params;
       struct disklabel sc_label;
       struct wdc_channel sc_channel;
};

struct wdc_command {
       uint8_t drive;          /* drive id */

       uint8_t r_command;      /* Parameters to upload to registers */
       uint8_t r_head;
       uint16_t r_cyl;
       uint8_t r_sector;
       uint8_t r_count;
       uint8_t r_features;

       uint16_t bcount;
       void *data;

       uint64_t r_blkno;
};

int     wdc_init(struct wd_softc *, u_int *);
int     wdccommand(struct wd_softc *, struct wdc_command *);
int     wdccommandext(struct wd_softc *, struct wdc_command *);
int     wdc_exec_read(struct wd_softc *, uint8_t, daddr_t, void *);
int     wdc_exec_identify(struct wd_softc *, void *);

int     pciide_init(struct wdc_channel *, u_int *);

#endif /* _STAND_WDVAR_H */