freebsd-skq/sys/dev/ata/atapi-tape.c
Alexander Motin 066f913a94 MFp4:
Introduce ATA_CAM kernel option, turning ata(4) controller drivers into
cam(4) interface modules. When enabled, this options deprecates all ata(4)
peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers
(ada, cd, ...) and interfaces to be natively used instead.

As side effect of this, ata(4) mode setting code was completely rewritten
to make controller API more strict and permit above change. While doing
this, SATA revision was separated from PATA mode. It allows DMA-incapable
SATA devices to operate and makes hw.ata.atapi_dma tunable work again.

Also allow ata(4) controller drivers (except some specific or broken ones)
to handle larger data transfers. Previous constraint of 64K was artificial
and is not really required by PCI ATA BM specification or hardware.

Submitted by:	nwitehorn (powerpc part)
2009-12-06 00:10:13 +00:00

740 lines
20 KiB
C

/*-
* Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
* 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.
*
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ata.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/mtio.h>
#include <sys/devicestat.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/bus.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-tape.h>
#include <ata_if.h>
/* device structure */
static d_open_t ast_open;
static d_close_t ast_close;
static d_ioctl_t ast_ioctl;
static d_strategy_t ast_strategy;
static struct cdevsw ast_cdevsw = {
.d_version = D_VERSION,
.d_open = ast_open,
.d_close = ast_close,
.d_read = physread,
.d_write = physwrite,
.d_ioctl = ast_ioctl,
.d_strategy = ast_strategy,
.d_name = "ast",
.d_flags = D_TAPE | D_TRACKCLOSE,
};
/* prototypes */
static int ast_sense(device_t);
static void ast_describe(device_t);
static void ast_done(struct ata_request *);
static int ast_mode_sense(device_t, int, void *, int);
static int ast_mode_select(device_t, void *, int);
static int ast_write_filemark(device_t, u_int8_t);
static int ast_read_position(device_t, int, struct ast_readposition *);
static int ast_space(device_t, u_int8_t, int32_t);
static int ast_locate(device_t, int, u_int32_t);
static int ast_prevent_allow(device_t, int);
static int ast_load_unload(device_t, u_int8_t);
static int ast_rewind(device_t);
static int ast_erase(device_t);
static int ast_test_ready(device_t);
static int ast_wait_dsc(device_t, int);
/* internal vars */
static u_int64_t ast_total = 0;
static MALLOC_DEFINE(M_AST, "ast_driver", "ATAPI tape driver buffers");
static int
ast_probe(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
if ((atadev->param.config & ATA_PROTO_ATAPI) &&
(atadev->param.config & ATA_ATAPI_TYPE_MASK) == ATA_ATAPI_TYPE_TAPE)
return 0;
else
return ENXIO;
}
static int
ast_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct ast_softc *stp;
struct ast_readposition position;
struct cdev *device;
if (!(stp = malloc(sizeof(struct ast_softc), M_AST, M_NOWAIT | M_ZERO))) {
device_printf(dev, "out of memory\n");
return ENOMEM;
}
device_set_ivars(dev, stp);
ata_setmode(dev);
if (ast_sense(dev)) {
device_set_ivars(dev, NULL);
free(stp, M_AST);
return ENXIO;
}
if (!strcmp(atadev->param.model, "OnStream DI-30")) {
struct ast_transferpage transfer;
struct ast_identifypage identify;
stp->flags |= F_ONSTREAM;
bzero(&transfer, sizeof(struct ast_transferpage));
ast_mode_sense(dev, ATAPI_TAPE_TRANSFER_PAGE,
&transfer, sizeof(transfer));
bzero(&identify, sizeof(struct ast_identifypage));
ast_mode_sense(dev, ATAPI_TAPE_IDENTIFY_PAGE,
&identify, sizeof(identify));
strncpy(identify.ident, "FBSD", 4);
ast_mode_select(dev, &identify, sizeof(identify));
ast_read_position(dev, 0, &position);
}
stp->stats = devstat_new_entry("ast", device_get_unit(dev), DEV_BSIZE,
DEVSTAT_NO_ORDERED_TAGS,
DEVSTAT_TYPE_SEQUENTIAL | DEVSTAT_TYPE_IF_IDE,
DEVSTAT_PRIORITY_TAPE);
device = make_dev(&ast_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0640,
"ast%d", device_get_unit(dev));
device->si_drv1 = dev;
device->si_iosize_max = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
stp->dev1 = device;
device = make_dev(&ast_cdevsw, 1, UID_ROOT, GID_OPERATOR, 0640,
"nast%d", device_get_unit(dev));
device->si_drv1 = dev;
device->si_iosize_max = ch->dma.max_iosize;
stp->dev2 = device;
/* announce we are here and ready */
ast_describe(dev);
return 0;
}
static int
ast_detach(device_t dev)
{
struct ast_softc *stp = device_get_ivars(dev);
/* detroy devices from the system so we dont get any further requests */
destroy_dev(stp->dev1);
destroy_dev(stp->dev2);
/* fail requests on the queue and any thats "in flight" for this device */
ata_fail_requests(dev);
/* dont leave anything behind */
devstat_remove_entry(stp->stats);
device_set_ivars(dev, NULL);
free(stp, M_AST);
return 0;
}
static int
ast_shutdown(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0);
return 0;
}
static int
ast_reinit(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
/* if detach pending, return error */
if (!(ch->devices & (ATA_ATAPI_MASTER << atadev->unit)))
return 1;
ata_setmode(dev);
return 0;
}
static int
ast_open(struct cdev *cdev, int flags, int fmt, struct thread *td)
{
device_t dev = cdev->si_drv1;
struct ata_device *atadev = device_get_softc(dev);
struct ast_softc *stp = device_get_ivars(dev);
if (!stp)
return ENXIO;
if (!device_is_attached(dev))
return EBUSY;
ast_test_ready(dev);
if (stp->cap.lock)
ast_prevent_allow(dev, 1);
if (ast_sense(dev))
device_printf(dev, "sense media type failed\n");
atadev->flags &= ~ATA_D_MEDIA_CHANGED;
stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN);
ast_total = 0;
return 0;
}
static int
ast_close(struct cdev *cdev, int flags, int fmt, struct thread *td)
{
device_t dev = cdev->si_drv1;
struct ast_softc *stp = device_get_ivars(dev);
/* flush buffers, some drives fail here, they should report ctl = 0 */
if (stp->cap.ctl && (stp->flags & F_DATA_WRITTEN))
ast_write_filemark(dev, 0);
/* write filemark if data written to tape */
if (!(stp->flags & F_ONSTREAM) &&
(stp->flags & (F_DATA_WRITTEN | F_FM_WRITTEN)) == F_DATA_WRITTEN)
ast_write_filemark(dev, ATAPI_WF_WRITE);
/* if unit is zero rewind on close */
if (dev2unit(cdev) == 0)
ast_rewind(dev);
if (stp->cap.lock && count_dev(cdev) == 1)
ast_prevent_allow(dev, 0);
stp->flags &= ~F_CTL_WARN;
#ifdef AST_DEBUG
device_printf(dev, "%ju total bytes transferred\n", (uintmax_t)ast_total);
#endif
return 0;
}
static int
ast_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int flag, struct thread *td)
{
device_t dev = cdev->si_drv1;
struct ast_softc *stp = device_get_ivars(dev);
int error = 0;
switch (cmd) {
case MTIOCGET:
{
struct mtget *g = (struct mtget *) data;
bzero(g, sizeof(struct mtget));
g->mt_type = 7;
g->mt_density = 1;
g->mt_blksiz = stp->blksize;
g->mt_comp = stp->cap.compress;
g->mt_density0 = 0; g->mt_density1 = 0;
g->mt_density2 = 0; g->mt_density3 = 0;
g->mt_blksiz0 = 0; g->mt_blksiz1 = 0;
g->mt_blksiz2 = 0; g->mt_blksiz3 = 0;
g->mt_comp0 = 0; g->mt_comp1 = 0;
g->mt_comp2 = 0; g->mt_comp3 = 0;
}
break;
case MTIOCTOP:
{
int i;
struct mtop *mt = (struct mtop *)data;
switch ((int16_t) (mt->mt_op)) {
case MTWEOF:
for (i=0; i < mt->mt_count && !error; i++)
error = ast_write_filemark(dev, ATAPI_WF_WRITE);
break;
case MTFSF:
if (mt->mt_count)
error = ast_space(dev, ATAPI_SP_FM, mt->mt_count);
break;
case MTBSF:
if (mt->mt_count)
error = ast_space(dev, ATAPI_SP_FM, -(mt->mt_count));
break;
case MTREW:
error = ast_rewind(dev);
break;
case MTOFFL:
error = ast_load_unload(dev, ATAPI_SS_EJECT);
break;
case MTNOP:
error = ast_write_filemark(dev, 0);
break;
case MTERASE:
error = ast_erase(dev);
break;
case MTEOD:
error = ast_space(dev, ATAPI_SP_EOD, 0);
break;
case MTRETENS:
error = ast_load_unload(dev, ATAPI_SS_RETENSION|ATAPI_SS_LOAD);
break;
case MTFSR:
case MTBSR:
case MTCACHE:
case MTNOCACHE:
case MTSETBSIZ:
case MTSETDNSTY:
case MTCOMP:
default:
error = EINVAL;
}
}
break;
case MTIOCRDSPOS:
{
struct ast_readposition position;
if ((error = ast_read_position(dev, 0, &position)))
break;
*(u_int32_t *)data = position.tape;
}
break;
case MTIOCRDHPOS:
{
struct ast_readposition position;
if ((error = ast_read_position(dev, 1, &position)))
break;
*(u_int32_t *)data = position.tape;
}
break;
case MTIOCSLOCATE:
error = ast_locate(dev, 0, *(u_int32_t *)data);
break;
case MTIOCHLOCATE:
error = ast_locate(dev, 1, *(u_int32_t *)data);
break;
default:
error = ata_device_ioctl(dev, cmd, data);
}
return error;
}
static void
ast_strategy(struct bio *bp)
{
device_t dev = bp->bio_dev->si_drv1;
struct ast_softc *stp = device_get_ivars(dev);
struct ata_request *request;
u_int32_t blkcount;
int8_t ccb[16];
/* if it's a null transfer, return immediatly. */
if (bp->bio_bcount == 0) {
bp->bio_resid = 0;
biodone(bp);
return;
}
if (!(bp->bio_cmd == BIO_READ) && stp->flags & F_WRITEPROTECT) {
biofinish(bp, NULL, EPERM);
return;
}
/* check for != blocksize requests */
if (bp->bio_bcount % stp->blksize) {
device_printf(dev, "transfers must be multiple of %d\n", stp->blksize);
biofinish(bp, NULL, EIO);
return;
}
/* warn about transfers bigger than the device suggests */
if (bp->bio_bcount > stp->blksize * stp->cap.ctl) {
if ((stp->flags & F_CTL_WARN) == 0) {
device_printf(dev, "WARNING: CTL exceeded %ld>%d\n",
bp->bio_bcount, stp->blksize * stp->cap.ctl);
stp->flags |= F_CTL_WARN;
}
}
bzero(ccb, sizeof(ccb));
if (bp->bio_cmd == BIO_READ)
ccb[0] = ATAPI_READ;
else
ccb[0] = ATAPI_WRITE;
blkcount = bp->bio_bcount / stp->blksize;
ccb[1] = 1;
ccb[2] = blkcount >> 16;
ccb[3] = blkcount >> 8;
ccb[4] = blkcount;
if (!(request = ata_alloc_request())) {
biofinish(bp, NULL, ENOMEM);
return;
}
request->dev = dev;
request->driver = bp;
bcopy(ccb, request->u.atapi.ccb, 16);
request->data = bp->bio_data;
request->bytecount = blkcount * stp->blksize;
request->transfersize = min(request->bytecount, 65534);
request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 180 : 120;
request->retries = 2;
request->callback = ast_done;
switch (bp->bio_cmd) {
case BIO_READ:
request->flags |= (ATA_R_ATAPI | ATA_R_READ);
break;
case BIO_WRITE:
request->flags |= (ATA_R_ATAPI | ATA_R_WRITE);
break;
default:
device_printf(dev, "unknown BIO operation\n");
ata_free_request(request);
biofinish(bp, NULL, EIO);
return;
}
devstat_start_transaction_bio(stp->stats, bp);
ata_queue_request(request);
}
static void
ast_done(struct ata_request *request)
{
struct ast_softc *stp = device_get_ivars(request->dev);
struct bio *bp = request->driver;
/* finish up transfer */
if ((bp->bio_error = request->result))
bp->bio_flags |= BIO_ERROR;
if (bp->bio_cmd == BIO_WRITE)
stp->flags |= F_DATA_WRITTEN;
bp->bio_resid = bp->bio_bcount - request->donecount;
ast_total += (bp->bio_bcount - bp->bio_resid);
biofinish(bp, stp->stats, 0);
ata_free_request(request);
}
static int
ast_sense(device_t dev)
{
struct ast_softc *stp = device_get_ivars(dev);
int count;
/* get drive capabilities, some bugridden drives needs this repeated */
for (count = 0 ; count < 5 ; count++) {
if (!ast_mode_sense(dev, ATAPI_TAPE_CAP_PAGE,
&stp->cap, sizeof(stp->cap)) &&
stp->cap.page_code == ATAPI_TAPE_CAP_PAGE) {
if (stp->cap.blk32k)
stp->blksize = 32768;
if (stp->cap.blk1024)
stp->blksize = 1024;
if (stp->cap.blk512)
stp->blksize = 512;
if (!stp->blksize)
continue;
stp->cap.max_speed = ntohs(stp->cap.max_speed);
stp->cap.max_defects = ntohs(stp->cap.max_defects);
stp->cap.ctl = ntohs(stp->cap.ctl);
stp->cap.speed = ntohs(stp->cap.speed);
stp->cap.buffer_size = ntohs(stp->cap.buffer_size);
return 0;
}
}
return 1;
}
static int
ast_mode_sense(device_t dev, int page, void *pagebuf, int pagesize)
{
int8_t ccb[16] = { ATAPI_MODE_SENSE, 0x08, page, pagesize>>8, pagesize,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int error;
error = ata_atapicmd(dev, ccb, pagebuf, pagesize, ATA_R_READ, 10);
return error;
}
static int
ast_mode_select(device_t dev, void *pagebuf, int pagesize)
{
int8_t ccb[16] = { ATAPI_MODE_SELECT, 0x10, 0, pagesize>>8, pagesize,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return ata_atapicmd(dev, ccb, pagebuf, pagesize, 0, 10);
}
static int
ast_write_filemark(device_t dev, u_int8_t function)
{
struct ast_softc *stp = device_get_ivars(dev);
int8_t ccb[16] = { ATAPI_WEOF, 0x01, 0, 0, function, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
if (stp->flags & F_ONSTREAM)
ccb[4] = 0x00; /* only flush buffers supported */
else {
if (function) {
if (stp->flags & F_FM_WRITTEN)
stp->flags &= ~F_DATA_WRITTEN;
else
stp->flags |= F_FM_WRITTEN;
}
}
error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
if (error)
return error;
return ast_wait_dsc(dev, 10*60);
}
static int
ast_read_position(device_t dev, int hard, struct ast_readposition *position)
{
int8_t ccb[16] = { ATAPI_READ_POSITION, (hard ? 0x01 : 0), 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
error = ata_atapicmd(dev, ccb, (caddr_t)position,
sizeof(struct ast_readposition), ATA_R_READ, 10);
position->tape = ntohl(position->tape);
position->host = ntohl(position->host);
return error;
}
static int
ast_space(device_t dev, u_int8_t function, int32_t count)
{
int8_t ccb[16] = { ATAPI_SPACE, function, count>>16, count>>8, count,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60);
}
static int
ast_locate(device_t dev, int hard, u_int32_t pos)
{
int8_t ccb[16] = { ATAPI_LOCATE, 0x01 | (hard ? 0x4 : 0), 0,
pos>>24, pos>>16, pos>>8, pos,
0, 0, 0, 0, 0, 0, 0, 0, 0 };
int error;
error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
if (error)
return error;
return ast_wait_dsc(dev, 60*60);
}
static int
ast_prevent_allow(device_t dev, int lock)
{
int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
}
static int
ast_load_unload(device_t dev, u_int8_t function)
{
struct ast_softc *stp = device_get_ivars(dev);
int8_t ccb[16] = { ATAPI_START_STOP, 0x01, 0, 0, function, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
if ((function & ATAPI_SS_EJECT) && !stp->cap.eject)
return 0;
error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
if (error)
return error;
pause("astlu", 1 * hz);
if (function == ATAPI_SS_EJECT)
return 0;
return ast_wait_dsc(dev, 60*60);
}
static int
ast_rewind(device_t dev)
{
int8_t ccb[16] = { ATAPI_REZERO, 0x01, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
error = ata_atapicmd(dev, ccb, NULL, 0, 0, 10);
if (error)
return error;
return ast_wait_dsc(dev, 60*60);
}
static int
ast_erase(device_t dev)
{
int8_t ccb[16] = { ATAPI_ERASE, 3, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
if ((error = ast_rewind(dev)))
return error;
return ata_atapicmd(dev, ccb, NULL, 0, 0, 60*60);
}
static int
ast_test_ready(device_t dev)
{
int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
}
static int
ast_wait_dsc(device_t dev, int timeout)
{
int error = 0;
int8_t ccb[16] = { ATAPI_POLL_DSC, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
timeout *= hz;
while (timeout > 0) {
error = ata_atapicmd(dev, ccb, NULL, 0, 0, 0);
if (error != EBUSY)
break;
pause("atpwt", hz / 2);
timeout -= (hz / 2);
}
return error;
}
static void
ast_describe(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct ast_softc *stp = device_get_ivars(dev);
if (bootverbose) {
device_printf(dev, "<%.40s/%.8s> tape drive at ata%d as %s\n",
atadev->param.model, atadev->param.revision,
device_get_unit(ch->dev), ata_unit2str(atadev));
device_printf(dev, "%dKB/s, ", stp->cap.max_speed);
printf("transfer limit %d blk%s, ",
stp->cap.ctl, (stp->cap.ctl > 1) ? "s" : "");
printf("%dKB buffer, ", (stp->cap.buffer_size * DEV_BSIZE) / 1024);
printf("%s %s\n", ata_mode2str(atadev->mode),
ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit)));
device_printf(dev, "Medium: ");
switch (stp->cap.medium_type) {
case 0x00:
printf("none"); break;
case 0x17:
printf("Travan 1 (400 Mbyte)"); break;
case 0xb6:
printf("Travan 4 (4 Gbyte)"); break;
case 0xda:
printf("OnStream ADR (15Gyte)"); break;
default:
printf("unknown (0x%x)", stp->cap.medium_type);
}
if (stp->cap.readonly) printf(", readonly");
if (stp->cap.reverse) printf(", reverse");
if (stp->cap.eformat) printf(", eformat");
if (stp->cap.qfa) printf(", qfa");
if (stp->cap.lock) printf(", lock");
if (stp->cap.locked) printf(", locked");
if (stp->cap.prevent) printf(", prevent");
if (stp->cap.eject) printf(", eject");
if (stp->cap.disconnect) printf(", disconnect");
if (stp->cap.ecc) printf(", ecc");
if (stp->cap.compress) printf(", compress");
if (stp->cap.blk512) printf(", 512b");
if (stp->cap.blk1024) printf(", 1024b");
if (stp->cap.blk32k) printf(", 32kb");
printf("\n");
}
else {
device_printf(dev, "TAPE <%.40s/%.8s> at ata%d-%s %s %s\n",
atadev->param.model, atadev->param.revision,
device_get_unit(ch->dev), ata_unit2str(atadev),
ata_mode2str(atadev->mode),
ata_satarev2str(ATA_GETREV(device_get_parent(dev), atadev->unit)));
}
}
static device_method_t ast_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ast_probe),
DEVMETHOD(device_attach, ast_attach),
DEVMETHOD(device_detach, ast_detach),
DEVMETHOD(device_shutdown, ast_shutdown),
/* ATA methods */
DEVMETHOD(ata_reinit, ast_reinit),
{ 0, 0 }
};
static driver_t ast_driver = {
"ast",
ast_methods,
0,
};
static devclass_t ast_devclass;
DRIVER_MODULE(ast, ata, ast_driver, ast_devclass, NULL, NULL);
MODULE_VERSION(ast, 1);
MODULE_DEPEND(ast, ata, 1, 1, 1);