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

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/*-
* Copyright (c) 1998,1999,2000,2001 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/ata.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/mtio.h>
#include <sys/disklabel.h>
#include <sys/devicestat.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-all.h>
#include <dev/ata/atapi-tape.h>
/* device structures */
static d_open_t astopen;
static d_close_t astclose;
static d_ioctl_t astioctl;
static d_strategy_t aststrategy;
static struct cdevsw ast_cdevsw = {
/* open */ astopen,
/* close */ astclose,
/* read */ physread,
/* write */ physwrite,
/* ioctl */ astioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ aststrategy,
/* name */ "ast",
/* maj */ 119,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_TAPE | D_TRACKCLOSE,
};
/* prototypes */
static int ast_sense(struct ast_softc *);
static void ast_describe(struct ast_softc *);
static int ast_done(struct atapi_request *);
static int ast_mode_sense(struct ast_softc *, int, void *, int);
static int ast_mode_select(struct ast_softc *, void *, int);
static int ast_write_filemark(struct ast_softc *, u_int8_t);
static int ast_read_position(struct ast_softc *, int, struct ast_readposition *);
static int ast_space(struct ast_softc *, u_int8_t, int32_t);
static int ast_locate(struct ast_softc *, int, u_int32_t);
static int ast_prevent_allow(struct ast_softc *stp, int);
static int ast_load_unload(struct ast_softc *, u_int8_t);
static int ast_rewind(struct ast_softc *);
static int ast_erase(struct ast_softc *);
/* internal vars */
static u_int32_t ast_lun_map = 0;
static u_int64_t ast_total = 0;
static MALLOC_DEFINE(M_AST, "AST driver", "ATAPI tape driver buffers");
int
astattach(struct atapi_softc *atp)
{
struct ast_softc *stp;
struct ast_readposition position;
dev_t dev;
char name[16];
static int ast_cdev_done = 0;
if (!ast_cdev_done) {
cdevsw_add(&ast_cdevsw);
ast_cdev_done = 1;
}
stp = malloc(sizeof(struct ast_softc), M_AST, M_NOWAIT | M_ZERO);
if (!stp) {
ata_printf(atp->controller, atp->unit, "out of memory\n");
return -1;
}
stp->atp = atp;
stp->lun = ata_get_lun(&ast_lun_map);
sprintf(name, "ast%d", stp->lun);
ata_set_name(atp->controller, atp->unit, name);
bioq_init(&stp->queue);
if (ast_sense(stp)) {
free(stp, M_AST);
return -1;
}
if (!strcmp(ATA_PARAM(stp->atp->controller, stp->atp->unit)->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(stp, ATAPI_TAPE_TRANSFER_PAGE,
&transfer, sizeof(transfer));
bzero(&identify, sizeof(struct ast_identifypage));
ast_mode_sense(stp, ATAPI_TAPE_IDENTIFY_PAGE,
&identify, sizeof(identify));
strncpy(identify.ident, "FBSD", 4);
ast_mode_select(stp, &identify, sizeof(identify));
ast_read_position(stp, 0, &position);
}
devstat_add_entry(&stp->stats, "ast", stp->lun, DEV_BSIZE,
DEVSTAT_NO_ORDERED_TAGS,
DEVSTAT_TYPE_SEQUENTIAL | DEVSTAT_TYPE_IF_IDE,
DEVSTAT_PRIORITY_TAPE);
dev = make_dev(&ast_cdevsw, dkmakeminor(stp->lun, 0, 0),
UID_ROOT, GID_OPERATOR, 0640, "ast%d", stp->lun);
dev->si_drv1 = stp;
dev->si_iosize_max = 252 * DEV_BSIZE;
stp->dev1 = dev;
dev = make_dev(&ast_cdevsw, dkmakeminor(stp->lun, 0, 1),
UID_ROOT, GID_OPERATOR, 0640, "nast%d", stp->lun);
dev->si_drv1 = stp;
dev->si_iosize_max = 252 * DEV_BSIZE;
stp->dev2 = dev;
stp->atp->flags |= ATAPI_F_MEDIA_CHANGED;
stp->atp->driver = stp;
ast_describe(stp);
return 0;
}
void
astdetach(struct atapi_softc *atp)
{
struct ast_softc *stp = atp->driver;
struct bio *bp;
while ((bp = bioq_first(&stp->queue))) {
bp->bio_error = ENXIO;
bp->bio_flags |= BIO_ERROR;
biodone(bp);
}
destroy_dev(stp->dev1);
destroy_dev(stp->dev2);
devstat_remove_entry(&stp->stats);
ata_free_name(atp->controller, atp->unit);
ata_free_lun(&ast_lun_map, stp->lun);
free(stp, M_AST);
}
static int
ast_sense(struct ast_softc *stp)
{
int count, error = 0;
/* get drive capabilities, some drives needs this repeated */
for (count = 0 ; count < 5 ; count++) {
if (!(error = ast_mode_sense(stp, ATAPI_TAPE_CAP_PAGE,
&stp->cap, sizeof(stp->cap)))) {
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 void
ast_describe(struct ast_softc *stp)
{
if (bootverbose) {
ata_printf(stp->atp->controller, stp->atp->unit,
"<%.40s/%.8s> tape drive at ata%d as %s\n",
ATA_PARAM(stp->atp->controller, stp->atp->unit)->model,
ATA_PARAM(stp->atp->controller, stp->atp->unit)->revision,
device_get_unit(stp->atp->controller->dev),
(stp->atp->unit == ATA_MASTER) ? "master" : "slave");
ata_printf(stp->atp->controller, stp->atp->unit, "%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\n", ata_mode2str(stp->atp->controller->mode[
ATA_DEV(stp->atp->unit)]));
ata_printf(stp->atp->controller, stp->atp->unit, "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 {
ata_printf(stp->atp->controller, stp->atp->unit,
"TAPE <%.40s> at ata%d-%s %s\n",
ATA_PARAM(stp->atp->controller, stp->atp->unit)->model,
device_get_unit(stp->atp->controller->dev),
(stp->atp->unit == ATA_MASTER) ? "master" : "slave",
ata_mode2str(stp->atp->controller->
mode[ATA_DEV(stp->atp->unit)]));
}
}
static int
astopen(dev_t dev, int flags, int fmt, struct proc *p)
{
struct ast_softc *stp = dev->si_drv1;
if (!stp)
return ENXIO;
if (count_dev(dev) > 1)
return EBUSY;
atapi_test_ready(stp->atp);
if (stp->cap.lock)
ast_prevent_allow(stp, 1);
if (ast_sense(stp))
ata_printf(stp->atp->controller, stp->atp->unit,
"sense media type failed\n");
stp->atp->flags &= ~ATAPI_F_MEDIA_CHANGED;
stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN);
ast_total = 0;
return 0;
}
static int
astclose(dev_t dev, int flags, int fmt, struct proc *p)
{
struct ast_softc *stp = dev->si_drv1;
/* flush buffers, some drives fail here, they should report ctl = 0 */
if (stp->cap.ctl && (stp->flags & F_DATA_WRITTEN))
ast_write_filemark(stp, 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(stp, WF_WRITE);
/* if minor is even rewind on close */
if (!(minor(dev) & 0x01))
ast_rewind(stp);
if (stp->cap.lock && count_dev(dev) == 1)
ast_prevent_allow(stp, 0);
stp->flags &= F_CTL_WARN;
#ifdef AST_DEBUG
ata_printf(stp->atp->controller, stp->atp->unit,
"%llu total bytes transferred\n", ast_total);
#endif
return 0;
}
static int
astioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct ast_softc *stp = dev->si_drv1;
int error = 0;
switch (cmd) {
case MTIOCGET:
{
struct mtget *g = (struct mtget *) addr;
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 *)addr;
switch ((int16_t) (mt->mt_op)) {
case MTWEOF:
for (i=0; i < mt->mt_count && !error; i++)
error = ast_write_filemark(stp, WF_WRITE);
break;
case MTFSF:
if (mt->mt_count)
error = ast_space(stp, SP_FM, mt->mt_count);
break;
case MTBSF:
if (mt->mt_count)
error = ast_space(stp, SP_FM, -(mt->mt_count));
break;
case MTREW:
error = ast_rewind(stp);
break;
case MTOFFL:
error = ast_load_unload(stp, SS_EJECT);
break;
case MTNOP:
error = ast_write_filemark(stp, 0);
break;
case MTERASE:
error = ast_erase(stp);
break;
case MTEOD:
error = ast_space(stp, SP_EOD, 0);
break;
case MTRETENS:
error = ast_load_unload(stp, SS_RETENSION | 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(stp, 0, &position)))
break;
*(u_int32_t *)addr = position.tape;
break;
}
case MTIOCRDHPOS:
{
struct ast_readposition position;
if ((error = ast_read_position(stp, 1, &position)))
break;
*(u_int32_t *)addr = position.tape;
break;
}
case MTIOCSLOCATE:
error = ast_locate(stp, 0, *(u_int32_t *)addr);
break;
case MTIOCHLOCATE:
error = ast_locate(stp, 1, *(u_int32_t *)addr);
break;
default:
error = ENOTTY;
}
return error;
}
static void
aststrategy(struct bio *bp)
{
struct ast_softc *stp = bp->bio_dev->si_drv1;
int s;
if (stp->atp->flags & ATAPI_F_DETACHING) {
bp->bio_error = ENXIO;
bp->bio_flags |= BIO_ERROR;
biodone(bp);
return;
}
/* 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) {
bp->bio_error = EPERM;
bp->bio_flags |= BIO_ERROR;
biodone(bp);
return;
}
/* check for != blocksize requests */
if (bp->bio_bcount % stp->blksize) {
ata_printf(stp->atp->controller, stp->atp->unit,
"bad request, must be multiple of %d\n", stp->blksize);
bp->bio_error = EIO;
bp->bio_flags |= BIO_ERROR;
biodone(bp);
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) {
ata_printf(stp->atp->controller, stp->atp->unit,
"WARNING: CTL exceeded %ld>%d\n",
bp->bio_bcount, stp->blksize * stp->cap.ctl);
stp->flags |= F_CTL_WARN;
}
}
s = splbio();
bioq_insert_tail(&stp->queue, bp);
ata_start(stp->atp->controller);
splx(s);
}
void
ast_start(struct atapi_softc *atp)
{
struct ast_softc *stp = atp->driver;
struct bio *bp = bioq_first(&stp->queue);
u_int32_t blkcount;
int8_t ccb[16];
if (!bp)
return;
bzero(ccb, sizeof(ccb));
if (bp->bio_cmd == BIO_READ)
ccb[0] = ATAPI_READ;
else
ccb[0] = ATAPI_WRITE;
bioq_remove(&stp->queue, bp);
blkcount = bp->bio_bcount / stp->blksize;
ccb[1] = 1;
ccb[2] = blkcount>>16;
ccb[3] = blkcount>>8;
ccb[4] = blkcount;
devstat_start_transaction(&stp->stats);
atapi_queue_cmd(stp->atp, ccb, bp->bio_data, blkcount * stp->blksize,
(bp->bio_cmd == BIO_READ) ? ATPR_F_READ : 0,
120, ast_done, bp);
}
static int
ast_done(struct atapi_request *request)
{
struct bio *bp = request->driver;
struct ast_softc *stp = request->device->driver;
if (request->error) {
bp->bio_error = request->error;
bp->bio_flags |= BIO_ERROR;
}
else {
if (!(bp->bio_cmd == BIO_READ))
stp->flags |= F_DATA_WRITTEN;
bp->bio_resid = bp->bio_bcount - request->donecount;
ast_total += (bp->bio_bcount - bp->bio_resid);
}
devstat_end_transaction_bio(&stp->stats, bp);
biodone(bp);
return 0;
}
static int
ast_mode_sense(struct ast_softc *stp, 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 = atapi_queue_cmd(stp->atp, ccb, pagebuf, pagesize, ATPR_F_READ, 10,
NULL, NULL);
#ifdef AST_DEBUG
atapi_dump("ast: mode sense ", pagebuf, pagesize);
#endif
return error;
}
static int
ast_mode_select(struct ast_softc *stp, 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 };
#ifdef AST_DEBUG
ata_printf(stp->atp->controller, stp->atp->unit,
"modeselect pagesize=%d\n", pagesize);
atapi_dump("mode select ", pagebuf, pagesize);
#endif
return atapi_queue_cmd(stp->atp, ccb, pagebuf, pagesize, 0, 10,
NULL, NULL);
}
static int
ast_write_filemark(struct ast_softc *stp, u_int8_t function)
{
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 = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL);
if (error)
return error;
return atapi_wait_dsc(stp->atp, 10*60);
}
static int
ast_read_position(struct ast_softc *stp, 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 = atapi_queue_cmd(stp->atp, ccb, (caddr_t)position,
sizeof(struct ast_readposition), ATPR_F_READ, 10,
NULL, NULL);
position->tape = ntohl(position->tape);
position->host = ntohl(position->host);
return error;
}
static int
ast_space(struct ast_softc *stp, 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 atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 60*60, NULL, NULL);
}
static int
ast_locate(struct ast_softc *stp, 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 = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL);
if (error)
return error;
return atapi_wait_dsc(stp->atp, 60*60);
}
static int
ast_prevent_allow(struct ast_softc *stp, 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 atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0,30, NULL, NULL);
}
static int
ast_load_unload(struct ast_softc *stp, u_int8_t function)
{
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 & SS_EJECT) && !stp->cap.eject)
return 0;
error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL);
if (error)
return error;
tsleep((caddr_t)&error, PRIBIO, "astlu", 1 * hz);
if (function == SS_EJECT)
return 0;
return atapi_wait_dsc(stp->atp, 60*60);
}
static int
ast_rewind(struct ast_softc *stp)
{
int8_t ccb[16] = { ATAPI_REWIND, 0x01, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0 };
int error;
error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL);
if (error)
return error;
return atapi_wait_dsc(stp->atp, 60*60);
}
static int
ast_erase(struct ast_softc *stp)
{
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(stp)))
return error;
return atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 60*60, NULL, NULL);
}
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