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55bfaed1c0
Well, better late than newer, but things has been hectic
around here, sorry for the long delay.
DMA support has been added to the ATA disk driver.
This only works on Intel PIIX3/4, Acer Aladdin and Promise controllers.
The promise support works without the BIOS on the board,
and timing modes are set to support up to UDMA speed. This
solves the problems with having more than one promise controller
in the same system.
There is support for "generic" DMA, that might work on other
controllers, but now you have been warned :)
More chipset specific code will come soon, I have to find testers
with the approbiate HW, more on that when I have it ready.
The system now uses its own major numbers, please run MAKEDEV
with the devices you need (ad?, acd?, afd?, ast?).
For now the disk driver will also attach to the old wd major
so one can at least boot without this step, but be warned, this
will eventually go away. The bootblocks will have to be changed
before one can boot directly from an "ad" device though.
Fixed problems:
All known hang problems should be solved
The probe code has been sligthly changed, this should solve
the reports I have lying around (I hope).
Hangs when accessing ata & atapi device on the same channel simultaniously.
A real braino in ata_start caused this, fixed.
As usual USE AT YOUR OWN RISK!!, this is still pre alpha level code.
Especially the DMA support can hose your disk real bad if anything
goes wrong, agaiin you have been warned :)
But please tell me how it works for you!
Enjoy!
-Søren
564 lines
16 KiB
C
564 lines
16 KiB
C
/*-
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* Copyright (c) 1998,1999 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: atapi-tape.c,v 1.4 1999/03/07 21:49:14 sos Exp $
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*/
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#include "ata.h"
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#include "atapist.h"
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#include "opt_devfs.h"
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#if NATA > 0 && NATAPIST > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/mtio.h>
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#include <sys/disklabel.h>
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#include <sys/devicestat.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif
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#include <machine/clock.h>
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#include <pci/pcivar.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/atapi-all.h>
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#include <dev/ata/atapi-tape.h>
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static d_open_t astopen;
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static d_close_t astclose;
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static d_read_t astread;
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static d_write_t astwrite;
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static d_ioctl_t astioctl;
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static d_strategy_t aststrategy;
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#define BDEV_MAJOR 33
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#define CDEV_MAJOR 119
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static struct cdevsw ast_cdevsw = {
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astopen, astclose, astread, astwrite,
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astioctl, nostop, nullreset, nodevtotty,
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seltrue, nommap, aststrategy, "ast",
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NULL, -1, nodump, nopsize,
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D_TAPE, 0, -1
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};
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static u_int32_t ast_total = 0;
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#define NUNIT 8
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#define UNIT(d) ((minor(d) >> 3) & 3)
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#define F_OPEN 0x0001 /* The device is opened */
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#define F_MEDIA_CHANGED 0x0002 /* The media have changed */
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#define F_DATA_WRITTEN 0x0004 /* Data has been written */
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#define F_FM_WRITTEN 0x0008 /* Filemark has been written */
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#define F_CTL_WARN 0x0010 /* Have we warned about CTL wrong? */
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static struct ast_softc *asttab[NUNIT]; /* Drive info by unit number */
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static int32_t astnlun = 0; /* Number of config'd drives */
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int32_t astattach(struct atapi_softc *);
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static int32_t ast_sense(struct ast_softc *);
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static void ast_describe(struct ast_softc *);
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static void ast_start(struct ast_softc *);
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static void ast_done(struct atapi_request *);
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static void ast_drvinit(void *);
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static int32_t ast_space_cmd(struct ast_softc *, u_int8_t, u_int32_t);
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static int32_t ast_write_filemark(struct ast_softc *, u_int8_t);
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static int32_t ast_erase(struct ast_softc *);
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static int32_t ast_load_unload(struct ast_softc *, u_int8_t);
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static int32_t ast_rewind(struct ast_softc *);
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int32_t
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astattach(struct atapi_softc *atp)
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{
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struct ast_softc *stp;
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if (astnlun >= NUNIT) {
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printf("ast: too many units\n");
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return -1;
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}
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stp = malloc(sizeof(struct ast_softc), M_TEMP, M_NOWAIT);
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if (!stp) {
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printf("ast: out of memory\n");
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return -1;
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}
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bzero(stp, sizeof(struct ast_softc));
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bufq_init(&stp->buf_queue);
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stp->atp = atp;
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stp->lun = astnlun;
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stp->flags = F_MEDIA_CHANGED;
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if (ast_sense(stp)) {
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free(stp, M_TEMP);
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return -1;
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}
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ast_describe(stp);
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asttab[astnlun++] = stp;
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devstat_add_entry(&stp->stats, "ast", stp->lun, DEV_BSIZE,
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DEVSTAT_NO_ORDERED_TAGS,
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DEVSTAT_TYPE_SEQUENTIAL | DEVSTAT_TYPE_IF_IDE,
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0x178);
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#ifdef DEVFS
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stp->cdevs_token = devfs_add_devswf(&ast_cdevsw, dkmakeminor(stp->lun, 0,0),
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DV_CHR, UID_ROOT, GID_OPERATOR, 0640,
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"rast%d", stp->lun);
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#endif
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return 0;
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}
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static int32_t
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ast_sense(struct ast_softc *stp)
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{
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int32_t error, count;
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int8_t buffer[256];
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int8_t ccb[16] = { ATAPI_TAPE_MODE_SENSE,
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8, /* DBD = 1 no block descr */
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ATAPI_TAPE_CAP_PAGE,
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sizeof(buffer)>>8, sizeof(buffer) & 0xff,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
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bzero(buffer, sizeof(buffer));
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/* Get drive capabilities, some drives needs this repeated */
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for (count = 0 ; count < 5 ; count++) {
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if (!(error = atapi_queue_cmd(stp->atp, ccb, buffer, sizeof(buffer),
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A_READ, NULL, NULL, NULL)))
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break;
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}
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#ifdef AST_DEBUG
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atapi_dump("ast: sense", buffer, sizeof(buffer));
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#endif
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if (error)
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return error;
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bcopy(buffer, &stp->header, sizeof(struct ast_header));
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bcopy(buffer+sizeof(struct ast_header), &stp->cap,
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sizeof(struct ast_cappage));
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if (stp->cap.page_code != ATAPI_TAPE_CAP_PAGE)
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return 1;
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stp->cap.max_speed = ntohs(stp->cap.max_speed);
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stp->cap.max_defects = ntohs(stp->cap.max_defects);
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stp->cap.ctl = ntohs(stp->cap.ctl);
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stp->cap.speed = ntohs(stp->cap.speed);
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stp->cap.buffer_size = ntohs(stp->cap.buffer_size);
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stp->blksize = (stp->cap.blk512 ? 512 : (stp->cap.blk1024 ? 1024 : 0));
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return 0;
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}
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static void
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ast_describe(struct ast_softc *stp)
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{
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int8_t model_buf[40+1];
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int8_t revision_buf[8+1];
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bpack(stp->atp->atapi_parm->model, model_buf, sizeof(model_buf));
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bpack(stp->atp->atapi_parm->revision, revision_buf, sizeof(revision_buf));
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printf("ast%d: <%s/%s> tape drive at ata%d as %s\n",
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stp->lun, model_buf, revision_buf,
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stp->atp->controller->lun,
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(stp->atp->unit == ATA_MASTER) ? "master" : "slave ");
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printf("ast%d: ", stp->lun);
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switch (stp->header.medium_type) {
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case 0x00: printf("Drive empty"); break;
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case 0x17: printf("Travan 1 (400 Mbyte) media"); break;
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case 0xb6: printf("Travan 4 (4 Gbyte) media"); break;
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default: printf("Unknown media (0x%x)", stp->header.medium_type);
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}
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if (stp->cap.readonly) printf(", readonly");
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if (stp->cap.reverse) printf(", reverse");
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if (stp->cap.eformat) printf(", eformat");
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if (stp->cap.qfa) printf(", qfa");
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if (stp->cap.lock) printf(", lock");
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if (stp->cap.locked) printf(", locked");
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if (stp->cap.prevent) printf(", prevent");
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if (stp->cap.eject) printf(", eject");
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if (stp->cap.disconnect) printf(", disconnect");
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if (stp->cap.ecc) printf(", ecc");
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if (stp->cap.compress) printf(", compress");
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if (stp->cap.blk512) printf(", 512b");
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if (stp->cap.blk1024) printf(", 1024b");
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if (stp->cap.slowb) printf(", slowb");
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printf("\nast%d: ", stp->lun);
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printf("Max speed=%dKb/s, ", stp->cap.max_speed);
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printf("Transfer limit=%d blocks, ", stp->cap.ctl);
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printf("Buffer size=%d blocks", stp->cap.buffer_size);
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printf("\n");
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}
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static int
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astopen(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
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{
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int32_t lun = UNIT(dev);
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struct ast_softc *stp;
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if (lun >= astnlun || !(stp = asttab[lun]))
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return ENXIO;
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if (stp->flags == F_OPEN)
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return EBUSY;
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if (ast_sense(stp))
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printf("ast%d: sense media type failed\n", stp->lun);
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stp->flags &= ~F_MEDIA_CHANGED;
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stp->flags &= ~(F_DATA_WRITTEN | F_FM_WRITTEN);
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stp->flags |= F_OPEN;
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ast_total = 0;
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return 0;
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}
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static int
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astclose(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
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{
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int32_t lun = UNIT(dev);
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struct ast_softc *stp;
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if (lun >= astnlun || !(stp = asttab[lun]))
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return ENXIO;
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/* Flush buffers, some drives fail here, but they should report ctl = 0 */
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if (stp->cap.ctl && (stp->flags & F_DATA_WRITTEN))
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ast_write_filemark(stp, 0);
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/* Write filemark if data written to tape */
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if ((stp->flags & (F_DATA_WRITTEN | F_FM_WRITTEN)) == F_DATA_WRITTEN)
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ast_write_filemark(stp, WEOF_WRITE_MASK);
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/* If minor is even rewind on close */
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if (!(minor(dev) & 0x01))
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ast_rewind(stp);
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stp->flags &= ~F_OPEN;
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#ifdef AST_DEBUG
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printf("ast%d: %ud total bytes transferred\n", stp->lun, ast_total);
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#endif
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stp->flags &= ~F_CTL_WARN;
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return 0;
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}
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static int
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astread(dev_t dev, struct uio *uio, int32_t ioflag)
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{
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return physio(aststrategy, NULL, dev, 1, minphys, uio);
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}
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static int
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astwrite(dev_t dev, struct uio *uio, int32_t ioflag)
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{
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return physio(aststrategy, NULL, dev, 0, minphys, uio);
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}
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static int
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astioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct proc *p)
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{
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int32_t lun = UNIT(dev);
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int32_t error = 0;
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struct ast_softc *stp;
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if (lun >= astnlun || !(stp = asttab[lun]))
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return ENXIO;
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switch (cmd) {
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case MTIOCGET:
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{
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struct mtget *g = (struct mtget *) addr;
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bzero(g, sizeof(struct mtget));
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g->mt_type = 7;
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g->mt_density = 1;
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g->mt_blksiz = stp->blksize;
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g->mt_comp = stp->cap.compress;
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g->mt_density0 = 0; g->mt_density1 = 0;
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g->mt_density2 = 0; g->mt_density3 = 0;
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g->mt_blksiz0 = 0; g->mt_blksiz1 = 0;
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g->mt_blksiz2 = 0; g->mt_blksiz3 = 0;
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g->mt_comp0 = 0; g->mt_comp1 = 0;
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g->mt_comp2 = 0; g->mt_comp3 = 0;
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break;
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}
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case MTIOCTOP:
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{
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int32_t i;
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struct mtop *mt = (struct mtop *)addr;
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switch ((int16_t) (mt->mt_op)) {
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case MTWEOF:
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for (i=0; i < mt->mt_count && !error; i++)
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error = ast_write_filemark(stp, WEOF_WRITE_MASK);
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break;
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case MTFSF:
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if (mt->mt_count)
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error = ast_space_cmd(stp, SP_FM, mt->mt_count);
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break;
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case MTBSF:
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if (mt->mt_count)
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error = ast_space_cmd(stp, SP_FM, -(mt->mt_count));
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break;
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case MTFSR:
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error = EINVAL; break;
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case MTBSR:
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error = EINVAL; break;
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case MTREW:
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error = ast_rewind(stp);
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break;
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case MTOFFL:
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if ((error = ast_rewind(stp)))
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break;
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error = ast_load_unload(stp, !LU_LOAD_MASK);
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break;
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case MTNOP:
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error = ast_write_filemark(stp, 0);
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break;
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case MTCACHE:
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error = EINVAL; break;
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case MTNOCACHE:
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error = EINVAL; break;
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case MTSETBSIZ:
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error = EINVAL; break;
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case MTSETDNSTY:
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error = EINVAL; break;
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case MTERASE:
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error = ast_erase(stp);
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break;
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case MTEOD:
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error = ast_space_cmd(stp, SP_EOD, 0);
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break;
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case MTCOMP:
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error = EINVAL; break;
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case MTRETENS:
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error = ast_load_unload(stp, LU_RETENSION_MASK|LU_LOAD_MASK);
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break;
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default:
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error = EINVAL;
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}
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return error;
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}
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default:
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return ENOTTY;
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}
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return error;
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}
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static void
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aststrategy(struct buf *bp)
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{
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int32_t lun = UNIT(bp->b_dev);
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struct ast_softc *stp = asttab[lun];
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int32_t x;
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/* If it's a null transfer, return immediatly. */
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if (bp->b_bcount == 0) {
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bp->b_resid = 0;
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biodone(bp);
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return;
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}
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/* Check for != blocksize requests */
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if (bp->b_bcount % stp->blksize) {
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printf("ast%d: bad request, must be multiple of %d\n",
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lun, stp->blksize);
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bp->b_error = EIO;
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bp->b_flags |= B_ERROR;
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biodone(bp);
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return;
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}
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if (bp->b_bcount > stp->blksize * stp->cap.ctl) {
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if ((stp->flags & F_CTL_WARN) == 0) {
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printf("ast%d: WARNING: CTL exceeded %ld>%d\n",
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lun, bp->b_bcount, stp->blksize * stp->cap.ctl);
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stp->flags |= F_CTL_WARN;
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}
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}
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x = splbio();
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ast_total += bp->b_bcount;
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bufq_insert_tail(&stp->buf_queue, bp);
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ast_start(stp);
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splx(x);
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}
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static void
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ast_start(struct ast_softc *stp)
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{
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struct buf *bp = bufq_first(&stp->buf_queue);
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u_int32_t blkcount;
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int8_t ccb[16];
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if (!bp)
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return;
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bzero(ccb, sizeof(ccb));
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bufq_remove(&stp->buf_queue, bp);
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blkcount = bp->b_bcount / stp->blksize;
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if (bp->b_flags & B_READ) {
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ccb[0] = ATAPI_TAPE_READ_CMD;
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} else {
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ccb[0] = ATAPI_TAPE_WRITE_CMD;
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stp->flags |= F_DATA_WRITTEN;
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}
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ccb[1] = 1;
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ccb[2] = blkcount>>16;
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ccb[3] = blkcount>>8;
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ccb[4] = blkcount;
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devstat_start_transaction(&stp->stats);
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atapi_queue_cmd(stp->atp, ccb, bp->b_data, bp->b_bcount,
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(bp->b_flags & B_READ) ? A_READ : 0, ast_done, stp, bp);
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}
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static void
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ast_done(struct atapi_request *request)
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{
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struct buf *bp = request->bp;
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struct ast_softc *stp = request->driver;
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devstat_end_transaction(&stp->stats, bp->b_bcount-request->bytecount,
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DEVSTAT_TAG_NONE,
|
|
(bp->b_flags&B_READ) ? DEVSTAT_READ:DEVSTAT_WRITE);
|
|
|
|
if (request->result) {
|
|
atapi_error(request->device, request->result);
|
|
bp->b_error = EIO;
|
|
bp->b_flags |= B_ERROR;
|
|
}
|
|
else
|
|
bp->b_resid = request->bytecount;
|
|
biodone(bp);
|
|
ast_start(stp);
|
|
}
|
|
|
|
static int32_t
|
|
ast_space_cmd(struct ast_softc *stp, u_int8_t function, u_int32_t count)
|
|
{
|
|
int32_t error;
|
|
int8_t ccb[16];
|
|
|
|
bzero(ccb, sizeof(ccb));
|
|
ccb[0] = ATAPI_TAPE_SPACE_CMD;
|
|
ccb[1] = function;
|
|
ccb[2] = count>>16;
|
|
ccb[3] = count>>8;
|
|
ccb[4] = count;
|
|
|
|
if ((error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL))){
|
|
atapi_error(stp->atp, error);
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int32_t
|
|
ast_write_filemark(struct ast_softc *stp, u_int8_t function)
|
|
{
|
|
int32_t error;
|
|
int8_t ccb[16];
|
|
|
|
if (function) {
|
|
if (stp->flags & F_FM_WRITTEN)
|
|
stp->flags &= ~F_DATA_WRITTEN;
|
|
else
|
|
stp->flags |= F_FM_WRITTEN;
|
|
}
|
|
bzero(ccb, sizeof(ccb));
|
|
ccb[0] = ATAPI_TAPE_WEOF;
|
|
ccb[4] = function;
|
|
|
|
if ((error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL))){
|
|
atapi_error(stp->atp, error);
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int32_t
|
|
ast_load_unload(struct ast_softc *stp, u_int8_t function)
|
|
{
|
|
int32_t error;
|
|
int8_t ccb[16];
|
|
|
|
bzero(ccb, sizeof(ccb));
|
|
ccb[0] = ATAPI_TAPE_LOAD_UNLOAD;
|
|
ccb[4] = function;
|
|
|
|
if ((error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL))){
|
|
atapi_error(stp->atp, error);
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int32_t
|
|
ast_erase(struct ast_softc *stp)
|
|
{
|
|
int32_t error;
|
|
int8_t ccb[16];
|
|
|
|
if ((error = ast_rewind(stp)))
|
|
return error;
|
|
|
|
bzero(ccb, sizeof(ccb));
|
|
ccb[0] = ATAPI_TAPE_ERASE;
|
|
ccb[1] = 3;
|
|
|
|
if ((error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL))){
|
|
atapi_error(stp->atp, error);
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int32_t
|
|
ast_rewind(struct ast_softc *stp)
|
|
{
|
|
int32_t error;
|
|
int8_t ccb[16];
|
|
|
|
bzero(ccb, sizeof(ccb));
|
|
ccb[0] = ATAPI_TAPE_REWIND;
|
|
|
|
if ((error = atapi_queue_cmd(stp->atp, ccb, NULL, 0, 0, NULL, NULL, NULL))){
|
|
atapi_error(stp->atp, error);
|
|
return EIO;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ast_drvinit(void *unused)
|
|
{
|
|
static ast_devsw_installed = 0;
|
|
|
|
if (!ast_devsw_installed) {
|
|
dev_t dev = makedev(CDEV_MAJOR, 0);
|
|
|
|
cdevsw_add(&dev, &ast_cdevsw, NULL);
|
|
ast_devsw_installed = 1;
|
|
}
|
|
}
|
|
|
|
SYSINIT(astdev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, ast_drvinit, NULL)
|
|
#endif /* NATA & NATAPIST */
|