989fb3947c
reports on those most welcome!
Fixed problems:
Hang on probe on "fantom" devices.
The probe now use a timeout to avoid hangs if no interrupt
is recevied.
There has also been more general code clenaups, and some reorgs.
592 lines
17 KiB
C
592 lines
17 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: ata-disk.c,v 1.3 1999/03/05 09:43:30 sos Exp $
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*/
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#include "ata.h"
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#include "atadisk.h"
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#include "opt_devfs.h"
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#if NATA > 0 && NATADISK > 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/proc.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#include <sys/diskslice.h>
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#include <sys/devicestat.h>
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#include <sys/fcntl.h>
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#include <sys/conf.h>
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#include <sys/stat.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 <i386/isa/isa.h>
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#include <i386/isa/isa_device.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ata/ata-disk.h>
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static d_open_t adopen;
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static d_close_t adclose;
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static d_read_t adread;
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static d_write_t adwrite;
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static d_ioctl_t adioctl;
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static d_strategy_t adstrategy;
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static d_psize_t adpsize;
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#define BDEV_MAJOR 0
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#define CDEV_MAJOR 3
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static struct cdevsw ad_cdevsw = {
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adopen, adclose, adread, adwrite,
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adioctl, nostop, nullreset, nodevtotty,
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seltrue, nommap, adstrategy, "ad",
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NULL, -1, nodump, adpsize,
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D_DISK, 0, -1
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};
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/* misc defines */
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#define UNIT(dev) (dev>>3 & 0x1f) /* assume 8 minor # per unit */
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#define NUNIT 16 /* max # of devices */
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/* prototypes */
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static void ad_attach(void *);
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static int32_t ad_getparam(struct ad_softc *);
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static void ad_strategy(struct buf *);
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static void ad_start(struct ad_softc *);
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static void ad_sleep(struct ad_softc *, int8_t *);
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static int8_t ad_version(u_int16_t);
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static void ad_drvinit(void);
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static struct ad_softc *adtab[NUNIT];
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static int32_t adnlun = 0; /* number of config'd drives */
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static struct intr_config_hook *ad_attach_hook;
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static void
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ad_attach(void *notused)
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{
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struct ad_softc *adp;
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int32_t ctlr, dev, secsperint;
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int8_t model_buf[40+1];
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int8_t revision_buf[8+1];
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/* now, run through atadevices and look for ATA disks */
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for (ctlr=0; ctlr<MAXATA && atadevices[ctlr]; ctlr++) {
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for (dev=0; dev<2; dev++) {
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if (atadevices[ctlr]->devices &
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(dev ? ATA_ATA_SLAVE : ATA_ATA_MASTER)) {
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#ifdef ATA_STATIC_ID
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adnlun = dev + ctlr * 2;
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#endif
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adp = adtab[adnlun];
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if (adp)
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printf("ad%d: unit already attached\n", adnlun);
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if (!(adp = malloc(sizeof(struct ad_softc),
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M_DEVBUF, M_NOWAIT))) {
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printf("ad%d: failed to allocate driver storage\n", adnlun);
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continue;
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}
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bzero(adp, sizeof(struct ad_softc));
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adp->controller = atadevices[ctlr];
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adp->unit = (dev == 0) ? ATA_MASTER : ATA_SLAVE;
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adp->lun = adnlun;
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if (ad_getparam(adp)) {
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free(adp, M_DEVBUF);
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continue;
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}
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adp->cylinders = adp->ata_parm->cylinders;
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adp->heads = adp->ata_parm->heads;
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adp->sectors = adp->ata_parm->sectors;
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adp->total_secs = adp->cylinders * adp->heads * adp->sectors;
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if (adp->cylinders == 16383 &&
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adp->total_secs < adp->ata_parm->lbasize) {
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adp->total_secs = adp->ata_parm->lbasize;
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adp->cylinders = adp->total_secs/(adp->heads*adp->sectors);
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}
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/* support multiple sectors / interrupt ? */
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adp->transfersize = DEV_BSIZE;
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secsperint = min(adp->ata_parm->nsecperint, 16);
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if (!ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI,
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0, 0, 0, secsperint, ATA_WAIT_INTR) &&
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ata_wait(adp->controller, ATA_S_DRDY) >= 0)
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adp->transfersize *= secsperint;
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bpack(adp->ata_parm->model, model_buf, sizeof(model_buf));
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bpack(adp->ata_parm->revision, revision_buf,
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sizeof(revision_buf));
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printf("ad%d: <%s/%s> ATA-%c disk at ata%d as %s\n",
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adnlun,
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model_buf, revision_buf,
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ad_version(adp->ata_parm->versmajor),
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ctlr,
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(adp->unit == ATA_MASTER) ? "master" : "slave ");
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printf("ad%d: %luMB (%u sectors), "
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"%u cyls, %u heads, %u S/T, %u B/S\n",
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adnlun,
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adp->total_secs / ((1024L * 1024L) / DEV_BSIZE),
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adp->total_secs,
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adp->cylinders,
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adp->heads,
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adp->sectors,
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DEV_BSIZE);
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printf("ad%d: %d secs/int, %d depth queue \n",
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adnlun, adp->transfersize / DEV_BSIZE,
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adp->ata_parm->queuelen & 0x1f);
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devstat_add_entry(&adp->stats, "ad", adnlun, DEV_BSIZE,
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DEVSTAT_NO_ORDERED_TAGS,
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DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
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0x180);
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#ifdef DEVFS
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adp->cdevs_token = devfs_add_devswf(&ad_cdevsw,
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dkmakeminor(adp->lun, 0, 0),
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DV_CHR,
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UID_ROOT, GID_OPERATOR,
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0640, "rad%d", adp->lun);
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adp->bdevs_token = devfs_add_devswf(&ad_cdevsw,
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dkmakeminor(adp->lun, 0, 0),
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DV_BLK,
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UID_ROOT, GID_OPERATOR,
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0640, "ad%d", adp->lun);
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#endif
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bufq_init(&adp->queue);
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adtab[adnlun++] = adp;
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}
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}
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}
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config_intrhook_disestablish(ad_attach_hook);
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}
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static int32_t
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ad_getparam(struct ad_softc *adp)
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{
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struct ata_params *ata_parm;
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int8_t buffer[DEV_BSIZE];
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ata_command(adp->controller, adp->unit, ATA_C_ATA_IDENTIFY,
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0, 0, 0, 0, ATA_WAIT_INTR);
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if (ata_wait(adp->controller, ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ))
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return -1;
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insw(adp->controller->ioaddr + ATA_DATA, buffer,
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sizeof(buffer)/sizeof(int16_t));
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ata_parm = malloc(sizeof(struct ata_params), M_DEVBUF, M_NOWAIT);
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if (!ata_parm)
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return -1;
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bcopy(buffer, ata_parm, sizeof(struct ata_params));
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bswap(ata_parm->model, sizeof(ata_parm->model));
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btrim(ata_parm->model, sizeof(ata_parm->model));
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bswap(ata_parm->revision, sizeof(ata_parm->revision));
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btrim(ata_parm->revision, sizeof(ata_parm->revision));
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adp->ata_parm = ata_parm;
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return 0;
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}
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static int
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adopen(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 ad_softc *adp;
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struct disklabel label;
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int32_t error;
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#ifdef AD_DEBUG
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printf("adopen: lun=%d adnlun=%d\n", lun, adnlun);
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#endif
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if (lun >= adnlun || !(adp = adtab[lun]))
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return ENXIO;
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/* spinwait if anybody else is reading the disk label */
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while (adp->flags & AD_F_LABELLING)
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tsleep((caddr_t)&adp->flags, PZERO - 1, "adop1", 1);
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/* protect agains label race */
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adp->flags |= AD_F_LABELLING;
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/* build disklabel and initilize slice tables */
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bzero(&label, sizeof label);
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label.d_secsize = DEV_BSIZE;
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label.d_nsectors = adp->sectors;
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label.d_ntracks = adp->heads;
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label.d_ncylinders = adp->cylinders;
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label.d_secpercyl = adp->sectors * adp->heads;
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label.d_secperunit = adp->total_secs;
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error = dsopen("ad", dev, fmt, 0, &adp->slices, &label, ad_strategy,
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(ds_setgeom_t *)NULL, &ad_cdevsw);
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adp->flags &= ~AD_F_LABELLING;
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ad_sleep(adp, "adop2");
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return error;
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}
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static int
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adclose(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 ad_softc *adp;
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#ifdef AD_DEBUG
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printf("adclose: lun=%d adnlun=%d\n", lun, adnlun);
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#endif
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if (lun >= adnlun || !(adp = adtab[lun]))
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return ENXIO;
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dsclose(dev, fmt, adp->slices);
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return 0;
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}
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static int
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adread(dev_t dev, struct uio *uio, int32_t ioflag)
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{
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return physio(adstrategy, NULL, dev, 1, minphys, uio);
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}
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static int
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adwrite(dev_t dev, struct uio *uio, int32_t ioflag)
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{
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return physio(adstrategy, NULL, dev, 0, minphys, uio);
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}
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static int
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adioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flags, struct proc *p)
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{
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struct ad_softc *adp;
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int32_t lun = UNIT(dev);
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int32_t error = 0;
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if (lun >= adnlun || !(adp = adtab[lun]))
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return ENXIO;
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ad_sleep(adp, "adioct");
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error = dsioctl("sd", dev, cmd, addr, flags, &adp->slices,
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ad_strategy, (ds_setgeom_t *)NULL);
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if (error != ENOIOCTL)
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return error;
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return ENOTTY;
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}
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static void
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adstrategy(struct buf *bp)
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{
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struct ad_softc *adp;
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int32_t lun = UNIT(bp->b_dev);
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int32_t s;
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#ifdef AD_DEBUG
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printf("adstrategy: entered\n");
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#endif
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if (lun >= adnlun || bp->b_blkno < 0 || !(adp = adtab[lun])
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|| bp->b_bcount % DEV_BSIZE != 0) {
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bp->b_error = EINVAL;
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bp->b_flags |= B_ERROR;
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goto done;
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}
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if (dscheck(bp, adp->slices) <= 0)
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goto done;
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s = splbio();
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/* hang around if somebody else is labelling */
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if (adp->flags & AD_F_LABELLING)
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ad_sleep(adp, "adlab");
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bufqdisksort(&adp->queue, bp);
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if (!adp->active)
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ad_start(adp);
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if (!adp->controller->active)
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ata_start(adp->controller);
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devstat_start_transaction(&adp->stats);
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splx(s);
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return;
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done:
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s = splbio();
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biodone(bp);
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splx(s);
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}
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static int
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adpsize(dev_t dev)
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{
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struct ad_softc *adp;
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int32_t lun = UNIT(dev);
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if (lun >= adnlun || !(adp = adtab[lun]))
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return -1;
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return dssize(dev, &adp->slices, adopen, adclose);
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}
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static void
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ad_strategy(struct buf *bp)
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{
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adstrategy(bp);
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}
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static void
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ad_start(struct ad_softc *adp)
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{
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struct buf *bp;
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#ifdef AD_DEBUG
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printf("ad_start:\n");
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#endif
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if (adp->active) {
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printf("ad_start: should newer be called when active\n"); /* SOS */
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return;
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}
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if (!(bp = bufq_first(&adp->queue)))
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return;
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bp->b_driver1 = adp;
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bufq_remove(&adp->queue, bp);
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/* link onto controller queue */
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bufq_insert_tail(&adp->controller->ata_queue, bp);
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/* mark the drive as busy */
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adp->active = 1;
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}
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void
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ad_transfer(struct buf *bp)
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{
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struct ad_softc *adp;
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u_int32_t blknum, secsprcyl;
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u_int32_t cylinder, head, sector, count, command;
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/* get request params */
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adp = bp->b_driver1;
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/* calculate transfer details */
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blknum = bp->b_pblkno + (adp->donecount / DEV_BSIZE);
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#ifdef AD_DEBUG
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printf("ad_transfer: blknum=%d\n", blknum);
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#endif
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if (adp->donecount == 0) {
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/* setup transfer parameters */
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adp->bytecount = bp->b_bcount;
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secsprcyl = adp->sectors * adp->heads;
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cylinder = blknum / secsprcyl;
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head = (blknum % secsprcyl) / adp->sectors;
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sector = blknum % adp->sectors;
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count = howmany(adp->bytecount, DEV_BSIZE);
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if (count > 255) /* SOS */
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printf("ad_transfer: count=%d\n", count);
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/* setup transfer length if multible sector access present */
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adp->currentsize = min(adp->bytecount, adp->transfersize);
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if (adp->currentsize > DEV_BSIZE)
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command = (bp->b_flags&B_READ) ? ATA_C_READ_MULTI:ATA_C_WRITE_MULTI;
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else
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command = (bp->b_flags&B_READ) ? ATA_C_READ : ATA_C_WRITE;
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ata_command(adp->controller, adp->unit, command, cylinder, head,
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sector + 1, count, ATA_IMMEDIATE);
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}
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/* if this is a read operation, return and wait for interrupt */
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if (bp->b_flags & B_READ) {
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#ifdef AD_DEBUG
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printf("ad_transfer: return waiting to read data\n");
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#endif
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return;
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}
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/* ready to write data ? */
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if (ata_wait(adp->controller, ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ) < 0) {
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printf("ad_transfer: timeout waiting for DRQ");
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}
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/* calculate transfer length */
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adp->currentsize = min(adp->bytecount, adp->transfersize);
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/* output the data */
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#if 0
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outsw(adp->controller->ioaddr + ATA_DATA,
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(void *)((int32_t)bp->b_data + adp->donecount),
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adp->currentsize / sizeof(int16_t));
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#else
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outsl(adp->controller->ioaddr + ATA_DATA,
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(void *)((int32_t)bp->b_data + adp->donecount),
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adp->currentsize / sizeof(int32_t));
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#endif
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adp->bytecount -= adp->currentsize;
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#ifdef AD_DEBUG
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printf("ad_transfer: return wrote data\n");
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#endif
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}
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int32_t
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ad_interrupt(struct buf *bp)
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{
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struct ad_softc *adp = bp->b_driver1;
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/* finish DMA stuff */
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/* get drive status */
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if (ata_wait(adp->controller, 0) < 0)
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printf("ad_interrupt: timeout waiting for status");
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if (adp->controller->status & (ATA_S_ERROR | ATA_S_CORR)) {
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oops:
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printf("ad%d: status=%02x error=%02x\n",
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adp->lun, adp->controller->status, adp->controller->error);
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if (adp->controller->status & ATA_S_ERROR) {
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printf("ad_interrupt: hard error\n");
|
|
bp->b_error = EIO;
|
|
bp->b_flags |= B_ERROR;
|
|
}
|
|
if (adp->controller->status & ATA_S_CORR)
|
|
printf("ad_interrupt: soft ECC\n");
|
|
}
|
|
/* if this was a read operation, get the data */
|
|
if (((bp->b_flags & (B_READ | B_ERROR)) == B_READ) && adp->active) {
|
|
|
|
/* ready to receive data? */
|
|
if ((adp->controller->status & (ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ))
|
|
!= (ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ))
|
|
printf("ad_interrupt: read interrupt arrived early");
|
|
|
|
if (ata_wait(adp->controller, ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ) != 0){
|
|
printf("ad_interrupt: read error detected late");
|
|
goto oops;
|
|
}
|
|
|
|
/* calculate transfer length */
|
|
adp->currentsize = min(adp->bytecount, adp->currentsize);
|
|
|
|
/* data are ready, get them */
|
|
#if 0
|
|
insw(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((int32_t)bp->b_data + adp->donecount),
|
|
adp->currentsize / sizeof(int16_t));
|
|
#else
|
|
insl(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((int32_t)bp->b_data + adp->donecount),
|
|
adp->currentsize / sizeof(int32_t));
|
|
#endif
|
|
adp->bytecount -= adp->currentsize;
|
|
#ifdef AD_DEBUG
|
|
printf("ad_interrupt: read in data\n");
|
|
#endif
|
|
}
|
|
|
|
/* finish up this tranfer, check for more work on this buffer */
|
|
if (adp->controller->active) {
|
|
if ((bp->b_flags & B_ERROR) == 0) {
|
|
adp->donecount += adp->currentsize;
|
|
#ifdef AD_DEBUG
|
|
printf("ad_interrupt: %s operation OK\n", (bp->b_flags & B_READ)?"R":"W");
|
|
#endif
|
|
if (adp->bytecount > 0) {
|
|
ad_transfer(bp); /* MESSY!! only needed for W */
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
}
|
|
bufq_remove(&adp->controller->ata_queue, bp);
|
|
bp->b_resid = bp->b_bcount - adp->donecount;
|
|
adp->donecount = 0;
|
|
devstat_end_transaction(&adp->stats, bp->b_bcount - bp->b_resid,
|
|
DEVSTAT_TAG_NONE,
|
|
(bp->b_flags & B_READ) ?
|
|
DEVSTAT_READ : DEVSTAT_WRITE);
|
|
biodone(bp);
|
|
adp->active = 0;
|
|
}
|
|
ad_start(adp);
|
|
#ifdef AD_DEBUG
|
|
printf("ad_interrupt: completed\n");
|
|
#endif
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
static void
|
|
ad_sleep(struct ad_softc *adp, int8_t *mesg)
|
|
{
|
|
int32_t s = splbio();
|
|
|
|
while (adp->controller->active)
|
|
tsleep((caddr_t)&adp->controller->active, PZERO - 1, mesg, 1);
|
|
splx(s);
|
|
}
|
|
|
|
static int8_t
|
|
ad_version(u_int16_t version)
|
|
{
|
|
int32_t bit;
|
|
|
|
if (version == 0xffff)
|
|
return '?';
|
|
for (bit = 15; bit >= 0; bit--)
|
|
if (version & (1<<bit))
|
|
return ('0' + bit);
|
|
return '?';
|
|
}
|
|
|
|
static void
|
|
ad_drvinit(void)
|
|
{
|
|
static ad_devsw_installed = 0;
|
|
|
|
if (!ad_devsw_installed) {
|
|
cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &ad_cdevsw);
|
|
ad_devsw_installed = 1;
|
|
}
|
|
/* register callback for when interrupts are enabled */
|
|
if (!(ad_attach_hook =
|
|
(struct intr_config_hook *)malloc(sizeof(struct intr_config_hook),
|
|
M_TEMP, M_NOWAIT))) {
|
|
printf("ad: malloc attach_hook failed\n");
|
|
return;
|
|
}
|
|
bzero(ad_attach_hook, sizeof(struct intr_config_hook));
|
|
|
|
ad_attach_hook->ich_func = ad_attach;
|
|
if (config_intrhook_establish(ad_attach_hook) != 0) {
|
|
printf("ad: config_intrhook_establish failed\n");
|
|
free(ad_attach_hook, M_TEMP);
|
|
}
|
|
}
|
|
|
|
SYSINIT(addev, SI_SUB_DRIVERS, SI_ORDER_SECOND, ad_drvinit, NULL)
|
|
#endif /* NATA && NATADISK */
|