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freebsd-skq/sys/dev/ata/atapi-fd.c

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/*-
* Copyright (c) 1998 - 2007 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 <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/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/endian.h>
#include <sys/cdio.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.h>
#include <machine/bus.h>
#include <geom/geom_disk.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-fd.h>
#include <ata_if.h>
/* prototypes */
static disk_open_t afd_open;
static disk_close_t afd_close;
static disk_strategy_t afd_strategy;
static disk_ioctl_t afd_ioctl;
static int afd_sense(device_t);
static void afd_describe(device_t);
static void afd_done(struct ata_request *);
static int afd_prevent_allow(device_t, int);
static int afd_test_ready(device_t);
/* internal vars */
static MALLOC_DEFINE(M_AFD, "afd_driver", "ATAPI floppy driver buffers");
static int
afd_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_DIRECT)
return 0;
else
return ENXIO;
}
static int
afd_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct afd_softc *fdp;
if (!(fdp = malloc(sizeof(struct afd_softc), M_AFD, M_NOWAIT | M_ZERO))) {
device_printf(dev, "out of memory\n");
return ENOMEM;
}
device_set_ivars(dev, fdp);
ATA_SETMODE(device_get_parent(dev), dev);
if (afd_sense(dev)) {
device_set_ivars(dev, NULL);
free(fdp, M_AFD);
return ENXIO;
}
atadev->flags |= ATA_D_MEDIA_CHANGED;
/* announce we are here */
afd_describe(dev);
/* create the disk device */
fdp->disk = disk_alloc();
fdp->disk->d_open = afd_open;
fdp->disk->d_close = afd_close;
fdp->disk->d_strategy = afd_strategy;
fdp->disk->d_ioctl = afd_ioctl;
fdp->disk->d_name = "afd";
fdp->disk->d_drv1 = dev;
if (ch->dma)
fdp->disk->d_maxsize = ch->dma->max_iosize;
else
fdp->disk->d_maxsize = DFLTPHYS;
fdp->disk->d_unit = device_get_unit(dev);
disk_create(fdp->disk, DISK_VERSION);
return 0;
}
static int
afd_detach(device_t dev)
{
struct afd_softc *fdp = device_get_ivars(dev);
/* check that we have a valid device to detach */
if (!device_get_ivars(dev))
return ENXIO;
/* detroy disk from the system so we dont get any further requests */
disk_destroy(fdp->disk);
/* fail requests on the queue and any thats "in flight" for this device */
ata_fail_requests(dev);
/* dont leave anything behind */
device_set_ivars(dev, NULL);
free(fdp, M_AFD);
return 0;
}
static void
afd_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);
}
static int
afd_reinit(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATAPI_MASTER)) ||
((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATAPI_SLAVE))) {
return 1;
}
ATA_SETMODE(device_get_parent(dev), dev);
return 0;
}
static int
afd_open(struct disk *dp)
{
device_t dev = dp->d_drv1;
struct ata_device *atadev = device_get_softc(dev);
struct afd_softc *fdp = device_get_ivars(dev);
if (!fdp)
return ENXIO;
if (!device_is_attached(dev))
return EBUSY;
afd_test_ready(dev);
afd_prevent_allow(dev, 1);
if (afd_sense(dev))
device_printf(dev, "sense media type failed\n");
atadev->flags &= ~ATA_D_MEDIA_CHANGED;
if (!fdp->mediasize)
return ENXIO;
fdp->disk->d_sectorsize = fdp->sectorsize;
fdp->disk->d_mediasize = fdp->mediasize;
fdp->disk->d_fwsectors = fdp->sectors;
fdp->disk->d_fwheads = fdp->heads;
return 0;
}
static int
afd_close(struct disk *dp)
{
device_t dev = dp->d_drv1;
afd_prevent_allow(dev, 0);
return 0;
}
static void
afd_strategy(struct bio *bp)
{
device_t dev = bp->bio_disk->d_drv1;
struct ata_device *atadev = device_get_softc(dev);
struct afd_softc *fdp = device_get_ivars(dev);
struct ata_request *request;
u_int16_t count;
int8_t ccb[16];
/* if it's a null transfer, return immediatly. */
if (bp->bio_bcount == 0) {
bp->bio_resid = 0;
biodone(bp);
return;
}
/* should reject all queued entries if media have changed. */
if (atadev->flags & ATA_D_MEDIA_CHANGED) {
biofinish(bp, NULL, EIO);
return;
}
count = bp->bio_bcount / fdp->sectorsize;
bp->bio_resid = bp->bio_bcount;
bzero(ccb, sizeof(ccb));
if (bp->bio_cmd == BIO_READ)
ccb[0] = ATAPI_READ_BIG;
else
ccb[0] = ATAPI_WRITE_BIG;
ccb[2] = bp->bio_pblkno >> 24;
ccb[3] = bp->bio_pblkno >> 16;
ccb[4] = bp->bio_pblkno >> 8;
ccb[5] = bp->bio_pblkno;
ccb[7] = count>>8;
ccb[8] = count;
if (!(request = ata_alloc_request())) {
biofinish(bp, NULL, ENOMEM);
return;
}
request->dev = dev;
request->bio = bp;
bcopy(ccb, request->u.atapi.ccb,
(atadev->param.config & ATA_PROTO_MASK) ==
ATA_PROTO_ATAPI_12 ? 16 : 12);
request->data = bp->bio_data;
request->bytecount = count * fdp->sectorsize;
request->transfersize = min(request->bytecount, 65534);
request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 60 : 30;
request->retries = 2;
request->callback = afd_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;
}
if (atadev->mode >= ATA_DMA)
request->flags |= ATA_R_DMA;
request->flags |= ATA_R_ORDERED;
ata_queue_request(request);
}
static void
afd_done(struct ata_request *request)
{
struct bio *bp = request->bio;
/* finish up transfer */
if ((bp->bio_error = request->result))
bp->bio_flags |= BIO_ERROR;
bp->bio_resid = bp->bio_bcount - request->donecount;
biodone(bp);
ata_free_request(request);
}
static int
afd_ioctl(struct disk *disk, u_long cmd, void *data, int flag,struct thread *td)
{
return ata_device_ioctl(disk->d_drv1, cmd, data);
}
static int
afd_sense(device_t dev)
{
struct ata_device *atadev = device_get_softc(dev);
struct afd_softc *fdp = device_get_ivars(dev);
struct afd_capacity capacity;
struct afd_capacity_big capacity_big;
struct afd_capabilities capabilities;
int8_t ccb1[16] = { ATAPI_READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int8_t ccb2[16] = { ATAPI_SERVICE_ACTION_IN, 0x10, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, sizeof(struct afd_capacity_big) & 0xff, 0, 0 };
int8_t ccb3[16] = { ATAPI_MODE_SENSE_BIG, 0, ATAPI_REWRITEABLE_CAP_PAGE,
0, 0, 0, 0, sizeof(struct afd_capabilities) >> 8,
sizeof(struct afd_capabilities) & 0xff,
0, 0, 0, 0, 0, 0, 0 };
int timeout = 20;
int error, count;
fdp->mediasize = 0;
/* wait for device to get ready */
while ((error = afd_test_ready(dev)) && timeout--) {
DELAY(100000);
}
if (error == EBUSY)
return 1;
/* The IOMEGA Clik! doesn't support reading the cap page, fake it */
if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12)) {
fdp->heads = 1;
fdp->sectors = 2;
fdp->mediasize = 39441 * 1024;
fdp->sectorsize = 512;
afd_test_ready(dev);
return 0;
}
/* get drive capacity */
if (!ata_atapicmd(dev, ccb1, (caddr_t)&capacity,
sizeof(struct afd_capacity), ATA_R_READ, 30)) {
fdp->heads = 16;
fdp->sectors = 63;
fdp->sectorsize = be32toh(capacity.blocksize);
fdp->mediasize = (u_int64_t)be32toh(capacity.capacity)*fdp->sectorsize;
afd_test_ready(dev);
return 0;
}
/* get drive capacity big */
if (!ata_atapicmd(dev, ccb2, (caddr_t)&capacity_big,
sizeof(struct afd_capacity_big),
ATA_R_READ | ATA_R_QUIET, 30)) {
fdp->heads = 16;
fdp->sectors = 63;
fdp->sectorsize = be32toh(capacity_big.blocksize);
fdp->mediasize = be64toh(capacity_big.capacity)*fdp->sectorsize;
afd_test_ready(dev);
return 0;
}
/* get drive capabilities, some bugridden drives needs this repeated */
for (count = 0 ; count < 5 ; count++) {
if (!ata_atapicmd(dev, ccb3, (caddr_t)&capabilities,
sizeof(struct afd_capabilities), ATA_R_READ, 30) &&
capabilities.page_code == ATAPI_REWRITEABLE_CAP_PAGE) {
fdp->heads = capabilities.heads;
fdp->sectors = capabilities.sectors;
fdp->sectorsize = be16toh(capabilities.sector_size);
fdp->mediasize = be16toh(capabilities.cylinders) *
fdp->heads * fdp->sectors * fdp->sectorsize;
if (!capabilities.medium_type)
fdp->mediasize = 0;
return 0;
}
}
return 1;
}
static int
afd_prevent_allow(device_t dev, int lock)
{
struct ata_device *atadev = device_get_softc(dev);
int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12))
return 0;
return ata_atapicmd(dev, ccb, NULL, 0, 0, 30);
}
static int
afd_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 void
afd_describe(device_t dev)
{
struct ata_channel *ch = device_get_softc(device_get_parent(dev));
struct ata_device *atadev = device_get_softc(dev);
struct afd_softc *fdp = device_get_ivars(dev);
char sizestring[16];
if (fdp->mediasize > 1048576 * 5)
sprintf(sizestring, "%juMB", fdp->mediasize / 1048576);
else if (fdp->mediasize)
sprintf(sizestring, "%juKB", fdp->mediasize / 1024);
else
strcpy(sizestring, "(no media)");
device_printf(dev, "%s <%.40s %.8s> at ata%d-%s %s\n",
sizestring, atadev->param.model, atadev->param.revision,
device_get_unit(ch->dev),
(atadev->unit == ATA_MASTER) ? "master" : "slave",
ata_mode2str(atadev->mode));
if (bootverbose) {
device_printf(dev, "%ju sectors [%juC/%dH/%dS]\n",
fdp->mediasize / fdp->sectorsize,
fdp->mediasize /(fdp->sectorsize*fdp->sectors*fdp->heads),
fdp->heads, fdp->sectors);
}
}
static device_method_t afd_methods[] = {
/* device interface */
DEVMETHOD(device_probe, afd_probe),
DEVMETHOD(device_attach, afd_attach),
DEVMETHOD(device_detach, afd_detach),
DEVMETHOD(device_shutdown, afd_shutdown),
/* ATA methods */
DEVMETHOD(ata_reinit, afd_reinit),
{ 0, 0 }
};
static driver_t afd_driver = {
"afd",
afd_methods,
0,
};
static devclass_t afd_devclass;
DRIVER_MODULE(afd, ata, afd_driver, afd_devclass, NULL, NULL);
MODULE_VERSION(afd, 1);
MODULE_DEPEND(afd, ata, 1, 1, 1);
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