freebsd-nq/sys/dev/ata/atapi-tape.c
Søren Schmidt dbdfe960cb Have another go at the VIA support, this time use the PCI ID form the
main component in the southbridge chip to determine which VIA chip
we are dealing with.

Try to enable DMA on generic controllers that say they has the
capability, instead of relying on the BIOS to have set it up.
1999-12-14 10:25:28 +00:00

644 lines
18 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 "apm.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/mtio.h>
#include <sys/disklabel.h>
#include <sys/devicestat.h>
#if NAPM > 0
#include <machine/apm_bios.h>
#endif
#include <dev/ata/ata-all.h>
#include <dev/ata/atapi-all.h>
#include <dev/ata/atapi-tape.h>
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,
/* bmaj */ -1
};
/* prototypes */
int32_t astattach(struct atapi_softc *);
static int32_t ast_sense(struct ast_softc *);
static void ast_describe(struct ast_softc *);
static void ast_start(struct ast_softc *);
static int32_t ast_done(struct atapi_request *);
static int32_t ast_mode_sense(struct ast_softc *, u_int8_t, void *, int32_t);
static int32_t ast_mode_select(struct ast_softc *, void *, int32_t);
static int32_t ast_write_filemark(struct ast_softc *, u_int8_t);
static int32_t ast_read_position(struct ast_softc *, int32_t, struct ast_readposition *);
static int32_t ast_space(struct ast_softc *, u_int8_t, u_int32_t);
static int32_t ast_locate(struct ast_softc *, int32_t, int32_t);
static int32_t ast_prevent_allow(struct ast_softc *stp, int32_t lock);
static int32_t ast_load_unload(struct ast_softc *, u_int8_t);
static int32_t ast_rewind(struct ast_softc *);
static int32_t ast_erase(struct ast_softc *);
/* internal vars */
static u_int64_t ast_total = 0;
MALLOC_DEFINE(M_AST, "AST driver", "ATAPI tape driver buffers");
int32_t
astattach(struct atapi_softc *atp)
{
struct ast_softc *stp;
struct ast_readposition position;
dev_t dev;
static int32_t ast_cdev_done = 0, astnlun = 0;
if (!ast_cdev_done) {
cdevsw_add(&ast_cdevsw);
ast_cdev_done = 1;
}
stp = malloc(sizeof(struct ast_softc), M_AST, M_NOWAIT);
if (!stp) {
printf("ast: out of memory\n");
return -1;
}
bzero(stp, sizeof(struct ast_softc));
bufq_init(&stp->buf_queue);
stp->atp = atp;
stp->lun = astnlun++;
stp->atp->flags |= ATAPI_F_MEDIA_CHANGED;
if (ast_sense(stp)) {
free(stp, M_AST);
return -1;
}
ast_describe(stp);
if (!strcmp(stp->atp->atapi_parm->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));
#ifdef AST_DEBUG
printf("ast: rd32k=%d rd32k5=%d wr32k=%d wr32k5=%d stream=%d\n",
transfer.read32k, transfer.read32k5,
transfer.write32k, transfer.write32k5, transfer.streaming);
#endif
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, "rast%d", stp->lun);
dev->si_drv1 = stp;
dev->si_iosize_max = 252 * DEV_BSIZE;
dev = make_dev(&ast_cdevsw, dkmakeminor(stp->lun, 0, 1),
UID_ROOT, GID_OPERATOR, 0640, "nrast%d", stp->lun);
dev->si_drv1 = stp;
dev->si_iosize_max = 252 * DEV_BSIZE;
if ((stp->atp->devname = malloc(8, M_AST, M_NOWAIT)))
sprintf(stp->atp->devname, "ast%d", stp->lun);
return 0;
}
static int32_t
ast_sense(struct ast_softc *stp)
{
int32_t 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))))
break;
}
if (error)
return 1;
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);
if (stp->cap.blk32k)
stp->blksize = 32768;
if (stp->cap.blk1024)
stp->blksize = 1024;
if (stp->cap.blk512)
stp->blksize = 512;
return 0;
}
static void
ast_describe(struct ast_softc *stp)
{
int8_t model_buf[40+1];
int8_t revision_buf[8+1];
bpack(stp->atp->atapi_parm->model, model_buf, sizeof(model_buf));
bpack(stp->atp->atapi_parm->revision, revision_buf, sizeof(revision_buf));
printf("ast%d: <%s/%s> tape drive at ata%d as %s\n",
stp->lun, model_buf, revision_buf,
stp->atp->controller->lun,
(stp->atp->unit == ATA_MASTER) ? "master" : "slave ");
printf("ast%d: ", stp->lun);
printf("%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[
(stp->atp->unit == ATA_MASTER) ? 0 : 1]));
printf("ast%d: ", stp->lun);
switch (stp->cap.medium_type) {
case 0x00: printf("Drive empty"); break;
case 0x17: printf("Travan 1 (400 Mbyte) media"); break;
case 0xb6: printf("Travan 4 (4 Gbyte) media"); break;
case 0xda: printf("OnStream ADR (15Gyte) media"); break;
default: printf("Unknown media (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");
}
static int
astopen(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
{
struct ast_softc *stp = dev->si_drv1;
if (!stp)
return ENXIO;
if (stp->flags == F_OPEN)
return EBUSY;
if (stp->cap.lock)
ast_prevent_allow(stp, 1);
if (ast_sense(stp))
printf("ast%d: sense media type failed\n", stp->lun);
stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN);
stp->flags |= F_OPEN;
stp->atp->flags &= ~ATAPI_F_MEDIA_CHANGED;
ast_total = 0;
return 0;
}
static int
astclose(dev_t dev, int32_t flags, int32_t 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)
ast_prevent_allow(stp, 0);
stp->flags &= ~(F_OPEN | F_CTL_WARN);
#ifdef AST_DEBUG
printf("ast%d: %llu total bytes transferred\n", stp->lun, ast_total);
#endif
return 0;
}
static int
astioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
{
struct ast_softc *stp = dev->si_drv1;
int32_t 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:
{
int32_t 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 buf *bp)
{
struct ast_softc *stp = bp->b_dev->si_drv1;
int32_t s;
/* if it's a null transfer, return immediatly. */
if (bp->b_bcount == 0) {
bp->b_resid = 0;
biodone(bp);
return;
}
if (!(bp->b_flags & B_READ) && stp->flags & F_WRITEPROTECT) {
bp->b_error = EPERM;
bp->b_flags |= B_ERROR;
biodone(bp);
return;
}
/* check for != blocksize requests */
if (bp->b_bcount % stp->blksize) {
printf("ast%d: bad request, must be multiple of %d\n",
stp->lun, stp->blksize);
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
biodone(bp);
return;
}
/* warn about transfers bigger than the device suggests */
if (bp->b_bcount > stp->blksize * stp->cap.ctl) {
if ((stp->flags & F_CTL_WARN) == 0) {
printf("ast%d: WARNING: CTL exceeded %ld>%d\n",
stp->lun, bp->b_bcount, stp->blksize * stp->cap.ctl);
stp->flags |= F_CTL_WARN;
}
}
s = splbio();
bufq_insert_tail(&stp->buf_queue, bp);
ast_start(stp);
splx(s);
}
static void
ast_start(struct ast_softc *stp)
{
struct buf *bp = bufq_first(&stp->buf_queue);
u_int32_t blkcount;
int8_t ccb[16];
if (!bp)
return;
bzero(ccb, sizeof(ccb));
if (bp->b_flags & B_READ) {
ccb[0] = ATAPI_READ;
if (!(stp->flags & ATAPI_F_DSC_USED))
atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 2*60, NULL, NULL, NULL);
}
else {
ccb[0] = ATAPI_WRITE;
if (!(stp->flags & ATAPI_F_DSC_USED))
atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 2*60, NULL, NULL, NULL);
}
bufq_remove(&stp->buf_queue, bp);
blkcount = bp->b_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->b_data, bp->b_bcount,
(bp->b_flags & B_READ) ? A_READ : 0, 60, ast_done, stp, bp);
}
static int32_t
ast_done(struct atapi_request *request)
{
struct buf *bp = request->bp;
struct ast_softc *stp = request->driver;
if (request->error) {
bp->b_error = request->error;
bp->b_flags |= B_ERROR;
}
else {
if (!(bp->b_flags & B_READ))
stp->flags |= F_DATA_WRITTEN;
bp->b_resid = request->bytecount;
ast_total += (bp->b_bcount - bp->b_resid);
}
devstat_end_transaction_buf(&stp->stats, bp);
biodone(bp);
ast_start(stp);
return 0;
}
static int32_t
ast_mode_sense(struct ast_softc *stp, u_int8_t page,
void *pagebuf, int32_t pagesize)
{
int8_t ccb[16] = { ATAPI_MODE_SENSE, 0x08, page, pagesize>>8, pagesize,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
int32_t error;
error = atapi_queue_cmd(stp->atp, ccb, pagebuf, pagesize, A_READ, 10,
NULL, NULL, NULL);
#ifdef AST_DEBUG
atapi_dump("ast: mode sense ", pagebuf, pagesize);
#endif
return error;
}
static int32_t
ast_mode_select(struct ast_softc *stp, void *pagebuf, int32_t 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
printf("ast: modeselect pagesize=%d\n", pagesize);
atapi_dump("ast: mode select ", pagebuf, pagesize);
#endif
return atapi_queue_cmd(stp->atp, ccb, pagebuf, pagesize, 0, 10,
NULL, NULL, NULL);
}
static int32_t
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 };
int32_t 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, NULL);
if (error)
return error;
return atapi_wait_ready(stp->atp, 5*60);
}
static int32_t
ast_read_position(struct ast_softc *stp, int32_t 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 };
int32_t error;
error = atapi_queue_cmd(stp->atp, ccb, position,
sizeof(struct ast_readposition), A_READ, 10,
NULL, NULL, NULL);
position->tape = ntohl(position->tape);
position->host = ntohl(position->host);
#ifdef AST_DEBUG
printf("ast%d: BOP=%d EOP=%d host=%ld tape=%ld in buf=%d error=%02x\n",
stp->lun, position->bop, position->eop, ntohl(position->host),
ntohl(position->tape), position->blks_in_buf, error);
#endif
return error;
}
static int32_t
ast_space(struct ast_softc *stp, u_int8_t function, u_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, NULL);
}
static int32_t
ast_locate(struct ast_softc *stp, int32_t hard, 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 };
int32_t error;
error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL, NULL);
if (error)
return error;
return atapi_wait_ready(stp->atp, 60*60);
}
static int32_t
ast_prevent_allow(struct ast_softc *stp, 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(stp->atp, ccb, NULL, 0, 0,30, NULL, NULL, NULL);
}
static int32_t
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 };
int32_t error;
if ((function & SS_EJECT) && !stp->cap.eject)
return 0;
error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL, NULL);
if (error)
return error;
tsleep((caddr_t)&error, PRIBIO, "astlu", 1 * hz);
if (function == SS_EJECT)
return 0;
return atapi_wait_ready(stp->atp, 60*60);
}
static int32_t
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 };
int32_t error;
error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 10, NULL, NULL, NULL);
if (error)
return error;
return atapi_wait_ready(stp->atp, 60*60);
}
static int32_t
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 };
int32_t error;
if ((error = ast_rewind(stp)))
return error;
return atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, 60*60, NULL, NULL, NULL);
}