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/*-
* Copyright (c) 1998,1999,2000 Søren Schmidt
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* $FreeBSD$
*/
/* structure describing an ATA disk */
struct ad_softc {
struct ata_softc *controller; /* ptr to parent ctrl */
int32_t unit; /* ATA_MASTER or ATA_SLAVE */
int32_t lun; /* logical unit number */
u_int32_t total_secs; /* total # of sectors (LBA) */
u_int8_t heads;
u_int8_t sectors;
u_int32_t transfersize; /* size of each transfer */
u_int32_t num_tags; /* number of tags supported */
u_int32_t flags; /* drive flags */
#define AD_F_LABELLING 0x0001
#define AD_F_LBA_ENABLED 0x0002
#define AD_F_32B_ENABLED 0x0004
#define AD_F_TAG_ENABLED 0x0008
struct bio_queue_head queue; /* head of request queue */
struct devstat stats; /* devstat entry */
struct disk disk; /* disklabel/slice stuff */
dev_t dev1, dev2; /* device place holder */
};
struct ad_request {
struct ad_softc *device; /* ptr to parent device */
u_int32_t blockaddr; /* block number */
u_int32_t bytecount; /* bytes to transfer */
u_int32_t donecount; /* bytes transferred */
u_int32_t currentsize; /* size of current transfer */
struct callout_handle timeout_handle; /* handle for untimeout */
int32_t retries; /* retry count */
int32_t flags;
#define ADR_F_READ 0x0001
#define ADR_F_ERROR 0x0002
#define ADR_F_DMA_USED 0x0004
#define ADR_F_FORCE_PIO 0x0008
int8_t *data; /* pointer to data buf */
struct bio *bp; /* associated bio ptr */
u_int8_t tag; /* tag ID of this request */
TAILQ_ENTRY(ad_request) chain; /* list management */
};
void ad_attach(struct ata_softc *, int32_t);
void ad_detach(struct ad_softc *);
void ad_start(struct ad_softc *);
void ad_transfer(struct ad_request *);
int32_t ad_interrupt(struct ad_request *);
void ad_reinit(struct ad_softc *);
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