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freebsd/sys/dev/ata/atapi-fd.c
Poul-Henning Kamp 10af1a2b5f We don't need to pass the diskname argument all over the diskslice/label
code, we can find the name from any convenient dev_t
1999-08-28 14:33:44 +00:00

467 lines
13 KiB
C

/*-
* Copyright (c) 1998,1999 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.
*
* $FreeBSD$
*/
#include "ata.h"
#include "atapifd.h"
#if NATA > 0 && NATAPIFD > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
#include <sys/devicestat.h>
#include <sys/cdio.h>
#include <sys/fcntl.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <pci/pcivar.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-all.h>
#include <dev/ata/atapi-fd.h>
static d_open_t afdopen;
static d_close_t afdclose;
static d_ioctl_t afdioctl;
static d_strategy_t afdstrategy;
static struct cdevsw afd_cdevsw = {
/* open */ afdopen,
/* close */ afdclose,
/* read */ physread,
/* write */ physwrite,
/* ioctl */ afdioctl,
/* stop */ nostop,
/* reset */ noreset,
/* devtotty */ nodevtotty,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ afdstrategy,
/* name */ "afd",
/* parms */ noparms,
/* maj */ 118,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_DISK,
/* maxio */ 0,
/* bmaj */ 32,
};
#define NUNIT 8
#define UNIT(d) ((minor(d) >> 3) & 3)
#define F_OPEN 0x0001 /* the device is opened */
#define F_MEDIA_CHANGED 0x0002 /* the media have changed */
static struct afd_softc *afdtab[NUNIT]; /* drive info by unit number */
static int32_t afdnlun = 0; /* number of config'd drives */
int32_t afdattach(struct atapi_softc *);
static int32_t afd_sense(struct afd_softc *);
static void afd_describe(struct afd_softc *);
static void afd_start(struct afd_softc *);
static void afd_partial_done(struct atapi_request *);
static void afd_done(struct atapi_request *);
static int32_t afd_start_device(struct afd_softc *, int32_t);
static int32_t afd_lock_device(struct afd_softc *, int32_t);
static int32_t afd_eject(struct afd_softc *, int32_t);
static void afd_drvinit(void *);
int32_t
afdattach(struct atapi_softc *atp)
{
struct afd_softc *fdp;
if (afdnlun >= NUNIT) {
printf("afd: too many units\n");
return -1;
}
fdp = malloc(sizeof(struct afd_softc), M_TEMP, M_NOWAIT);
if (!fdp) {
printf("afd: out of memory\n");
return -1;
}
bzero(fdp, sizeof(struct afd_softc));
bufq_init(&fdp->buf_queue);
fdp->atp = atp;
fdp->lun = afdnlun;
fdp->flags = F_MEDIA_CHANGED;
if (afd_sense(fdp)) {
free(fdp, M_TEMP);
return -1;
}
if (!strncmp(atp->atapi_parm->model, "IOMEGA ZIP", 11))
fdp->transfersize = 64;
afd_describe(fdp);
afdtab[afdnlun++] = fdp;
devstat_add_entry(&fdp->stats, "afd", fdp->lun, DEV_BSIZE,
DEVSTAT_NO_ORDERED_TAGS,
DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
0x174);
make_dev(&afd_cdevsw, dkmakeminor(fdp->lun, 0,0),
UID_ROOT, GID_OPERATOR, 0640, "rafd%d", fdp->lun);
make_dev(&afd_cdevsw, dkmakeminor(fdp->lun, 0,0),
UID_ROOT, GID_OPERATOR, 0640, "afd%d", fdp->lun);
return 0;
}
static int32_t
afd_sense(struct afd_softc *fdp)
{
int32_t error, count;
int8_t buffer[256];
int8_t ccb[16] = { ATAPI_MODE_SENSE, 0, ATAPI_REWRITEABLE_CAP_PAGE,
0, 0, 0, 0, sizeof(buffer)>>8, sizeof(buffer) & 0xff,
0, 0, 0, 0, 0, 0, 0 };
bzero(buffer, sizeof(buffer));
/* get drive capabilities, some drives needs this repeated */
for (count = 0 ; count < 5 ; count++) {
if (!(error = atapi_queue_cmd(fdp->atp, ccb, buffer, sizeof(buffer),
A_READ, 30, NULL, NULL, NULL)))
break;
}
#ifdef AFD_DEBUG
atapi_dump("afd: sense", buffer, sizeof(buffer));
#endif
if (error)
return error;
bcopy(buffer, &fdp->header, sizeof(struct afd_header));
bcopy(buffer+sizeof(struct afd_header), &fdp->cap,
sizeof(struct afd_cappage));
if (fdp->cap.page_code != ATAPI_REWRITEABLE_CAP_PAGE)
return 1;
fdp->cap.cylinders = ntohs(fdp->cap.cylinders);
fdp->cap.sector_size = ntohs(fdp->cap.sector_size);
return 0;
}
static void
afd_describe(struct afd_softc *fdp)
{
int8_t model_buf[40+1];
int8_t revision_buf[8+1];
bpack(fdp->atp->atapi_parm->model, model_buf, sizeof(model_buf));
bpack(fdp->atp->atapi_parm->revision, revision_buf, sizeof(revision_buf));
printf("afd%d: <%s/%s> rewriteable drive at ata%d as %s\n",
fdp->lun, model_buf, revision_buf,
fdp->atp->controller->lun,
(fdp->atp->unit == ATA_MASTER) ? "master" : "slave ");
printf("afd%d: %luMB (%u sectors), %u cyls, %u heads, %u S/T, %u B/S\n",
afdnlun,
(fdp->cap.cylinders * fdp->cap.heads * fdp->cap.sectors) /
((1024L * 1024L) / fdp->cap.sector_size),
fdp->cap.cylinders * fdp->cap.heads * fdp->cap.sectors,
fdp->cap.cylinders, fdp->cap.heads, fdp->cap.sectors,
fdp->cap.sector_size);
printf("afd%d: Medium: ", fdp->lun);
switch (fdp->header.medium_type) {
case MFD_2DD:
printf("720KB DD disk"); break;
case MFD_HD_12:
printf("1.2MB HD disk"); break;
case MFD_HD_144:
printf("1.44MB HD disk"); break;
case MFD_UHD:
printf("120MB UHD disk"); break;
default: printf("Unknown media (0x%x)", fdp->header.medium_type);
}
if (fdp->header.wp) printf(", writeprotected");
printf("\n");
}
static int
afdopen(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
{
struct afd_softc *fdp;
struct disklabel label;
int32_t lun = UNIT(dev);
if (lun >= afdnlun || !(fdp = afdtab[lun]))
return ENXIO;
fdp->flags &= ~F_MEDIA_CHANGED;
afd_lock_device(fdp, 1);
if (afd_sense(fdp))
printf("afd%d: sense media type failed\n", fdp->lun);
/* build disklabel and initilize slice tables */
bzero(&label, sizeof label);
label.d_secsize = fdp->cap.sector_size;
label.d_nsectors = fdp->cap.sectors;
label.d_ntracks = fdp->cap.heads;
label.d_ncylinders = fdp->cap.cylinders;
label.d_secpercyl = fdp->cap.heads * fdp->cap.sectors;
label.d_secperunit = fdp->cap.heads * fdp->cap.sectors * fdp->cap.cylinders;
/* initialize slice tables. */
return dsopen(dev, fmt, 0, &fdp->slices, &label);
}
static int
afdclose(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
{
int32_t lun = UNIT(dev);
struct afd_softc *fdp;
if (lun >= afdnlun || !(fdp = afdtab[lun]))
return ENXIO;
dsclose(dev, fmt, fdp->slices);
if(!dsisopen(fdp->slices))
afd_lock_device(fdp, 0);
return 0;
}
static int
afdioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
{
int32_t lun = UNIT(dev);
int32_t error = 0;
struct afd_softc *fdp;
if (lun >= afdnlun || !(fdp = afdtab[lun]))
return ENXIO;
error = dsioctl(dev, cmd, addr, flag, &fdp->slices);
if (error != ENOIOCTL)
return error;
switch (cmd) {
case CDIOCEJECT:
if ((fdp->flags & F_OPEN) && fdp->refcnt)
return EBUSY;
return afd_eject(fdp, 0);
case CDIOCCLOSE:
if ((fdp->flags & F_OPEN) && fdp->refcnt)
return 0;
return afd_eject(fdp, 1);
default:
return ENOTTY;
}
}
static void
afdstrategy(struct buf *bp)
{
int32_t lun = UNIT(bp->b_dev);
struct afd_softc *fdp = afdtab[lun];
int32_t x;
if (bp->b_bcount == 0) {
bp->b_resid = 0;
biodone(bp);
return;
}
if (dscheck(bp, fdp->slices) <= 0) {
biodone(bp);
return;
}
x = splbio();
bufq_insert_tail(&fdp->buf_queue, bp);
afd_start(fdp);
splx(x);
}
static void
afd_start(struct afd_softc *fdp)
{
struct buf *bp = bufq_first(&fdp->buf_queue);
u_int32_t lba, count;
int8_t ccb[16];
int8_t *data_ptr;
if (!bp)
return;
bufq_remove(&fdp->buf_queue, bp);
/* should reject all queued entries if media have changed. */
if (fdp->flags & F_MEDIA_CHANGED) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
biodone(bp);
return;
}
lba = bp->b_blkno / (fdp->cap.sector_size / DEV_BSIZE);
count = (bp->b_bcount + (fdp->cap.sector_size - 1)) / fdp->cap.sector_size;
data_ptr = bp->b_data;
bp->b_resid = 0;
bzero(ccb, sizeof(ccb));
if (bp->b_flags & B_READ)
ccb[0] = ATAPI_READ_BIG;
else
ccb[0] = ATAPI_WRITE_BIG;
devstat_start_transaction(&fdp->stats);
while (fdp->transfersize && (count > fdp->transfersize)) {
ccb[2] = lba>>24;
ccb[3] = lba>>16;
ccb[4] = lba>>8;
ccb[5] = lba;
ccb[7] = fdp->transfersize>>8;
ccb[8] = fdp->transfersize;
atapi_queue_cmd(fdp->atp, ccb, data_ptr,
fdp->transfersize * fdp->cap.sector_size,
(bp->b_flags & B_READ) ? A_READ : 0, 30,
afd_partial_done, fdp, bp);
count -= fdp->transfersize;
lba += fdp->transfersize;
data_ptr += fdp->transfersize * fdp->cap.sector_size;
}
ccb[2] = lba>>24;
ccb[3] = lba>>16;
ccb[4] = lba>>8;
ccb[5] = lba;
ccb[7] = count>>8;
ccb[8] = count;
atapi_queue_cmd(fdp->atp, ccb, data_ptr, count * fdp->cap.sector_size,
(bp->b_flags & B_READ) ? A_READ : 0, 30, afd_done, fdp, bp);
}
static void
afd_partial_done(struct atapi_request *request)
{
struct buf *bp = request->bp;
if (request->result) {
bp->b_error = atapi_error(request->device, request->result);
bp->b_flags |= B_ERROR;
}
bp->b_resid += request->bytecount;
}
static void
afd_done(struct atapi_request *request)
{
struct buf *bp = request->bp;
struct afd_softc *fdp = request->driver;
if (request->result || (bp->b_flags & B_ERROR)) {
bp->b_error = atapi_error(request->device, request->result);
bp->b_flags |= B_ERROR;
}
else
bp->b_resid += request->bytecount;
devstat_end_transaction(&fdp->stats, bp->b_bcount - bp->b_resid,
DEVSTAT_TAG_NONE,
(bp->b_flags&B_READ) ? DEVSTAT_READ:DEVSTAT_WRITE);
biodone(bp);
afd_start(fdp);
}
static int32_t
afd_start_device(struct afd_softc *fdp, int32_t start)
{
int8_t ccb[16] = { ATAPI_START_STOP, 0, 0, 0, start,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return atapi_queue_cmd(fdp->atp, ccb, NULL, 0, 0, 30, NULL, NULL, NULL);
}
static int32_t
afd_lock_device(struct afd_softc *fdp, int32_t lock)
{
int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
return atapi_queue_cmd(fdp->atp, ccb, NULL, 0, 0, 30, NULL, NULL, NULL);
}
static int32_t
afd_eject(struct afd_softc *fdp, int32_t close)
{
int32_t error;
error = afd_start_device(fdp, 0);
if (error == EBUSY || error == EAGAIN) {
if (!close)
return 0;
if ((error = afd_start_device(fdp, 3)))
return error;
return afd_lock_device(fdp, 1);
}
if (error)
return error;
if (close)
return 0;
tsleep((caddr_t) &lbolt, PRIBIO, "afdej1", 0);
tsleep((caddr_t) &lbolt, PRIBIO, "afdej2", 0);
if ((error = afd_lock_device(fdp, 0)))
return error;
fdp->flags |= F_MEDIA_CHANGED;
return afd_start_device(fdp, 2);
}
static void
afd_drvinit(void *unused)
{
static int32_t afd_devsw_installed = 0;
if (!afd_devsw_installed) {
if (!afd_cdevsw.d_maxio)
afd_cdevsw.d_maxio = 254 * DEV_BSIZE;
cdevsw_add(&afd_cdevsw);
afd_devsw_installed = 1;
}
}
SYSINIT(afddev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, afd_drvinit, NULL)
#endif /* NATA & NATAPIFD */