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/* $OpenBSD: atascsi.h,v 1.12 2007/03/20 07:45:11 dlg Exp $ */
/*
* Copyright (c) 2007 David Gwynne <dlg@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
struct atascsi;
struct ata_xfer;
struct atascsi_methods {
int (*probe)(void *, int);
struct ata_xfer * (*ata_get_xfer)(void *, int );
int (*ata_cmd)(struct ata_xfer *);
};
struct atascsi_attach_args {
void *aaa_cookie;
struct atascsi_methods *aaa_methods;
void (*aaa_minphys)(struct buf *);
int aaa_nports;
int aaa_ncmds;
};
struct ata_port {
struct atascsi *ap_as;
int ap_port;
int ap_type;
#define ATA_PORT_T_NONE 0
#define ATA_PORT_T_DISK 1
#define ATA_PORT_T_ATAPI 2
};
/* These offsets correspond with the layout of the SATA Host to Device
* and Device to Host FISes. Do not change them. */
enum ata_register_map {
REGS_TYPE = 0,
FIS_TYPE = 0,
#define REGS_TYPE_REG_H2D 0x27
#define REGS_TYPE_REG_D2H 0x34
#define REGS_TYPE_SDB_D2H 0xA1
H2D_DEVCTL_OR_COMMAND = 1,
#define H2D_DEVCTL_OR_COMMAND_DEVCTL 0x00
#define H2D_DEVCTL_OR_COMMAND_COMMAND 0x80
#define H2D_DEVCTL_OR_COMMAND_PMULT_MSK 0x0f
D2H_INTERRUPT = 1,
#define D2H_INTERRUPT_INTERRUPT 0x40
H2D_COMMAND = 2,
D2H_STATUS = 2,
H2D_FEATURES = 3,
D2H_ERROR = 3,
SECTOR_NUM = 4,
LBA_LOW = 4,
CYL_LOW = 5,
LBA_MID = 5,
CYL_HIGH = 6,
LBA_HIGH = 6,
DEVICE_HEAD = 7,
DEVICE = 7,
#define H2D_DEVICE_LBA 0x40
SECTOR_NUM_EXP = 8,
LBA_LOW_EXP = 8,
CYL_LOW_EXP = 9,
LBA_MID_EXP = 9,
CYL_HIGH_EXP = 10,
LBA_HIGH_EXP = 10,
FEATURES_EXP = 11,
SECTOR_COUNT = 12,
SECTOR_COUNT_EXP = 13,
RESERVED_14 = 14,
CONTROL = 15,
RESERVED_16 = 16,
RESERVED_17 = 17,
RESERVED_18 = 18,
RESERVED_19 = 19,
MAX_ATA_REGS = 20
};
struct ata_regs {
u_int8_t regs[MAX_ATA_REGS];
};
struct ata_cmd {
struct ata_regs *tx;
struct ata_regs rx_err;
u_int8_t st_bmask;
u_int8_t st_pmask;
};
struct ata_xfer {
struct ata_cmd cmd;
u_int8_t *data;
size_t datalen;
size_t resid;
void (*complete)(struct ata_xfer *);
struct timeout stimeout;
u_int timeout;
int flags;
#define ATA_F_READ (1<<0)
#define ATA_F_WRITE (1<<1)
#define ATA_F_NOWAIT (1<<2)
#define ATA_F_POLL (1<<3)
#define ATA_F_PIO (1<<4)
volatile int state;
#define ATA_S_SETUP 0
#define ATA_S_PENDING 1
#define ATA_S_COMPLETE 2
#define ATA_S_ERROR 3
#define ATA_S_PUT 6
void *atascsi_private;
void (*ata_put_xfer)(struct ata_xfer *);
};
#define ATA_QUEUED 0
#define ATA_COMPLETE 1
#define ATA_ERROR 2
struct atascsi *atascsi_attach(struct device *, struct atascsi_attach_args *);
int atascsi_detach(struct atascsi *);
int atascsi_probe_dev(struct atascsi *, int);
int atascsi_detach_dev(struct atascsi *, int);
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