757 lines
22 KiB
C
757 lines
22 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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* $FreeBSD$
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*/
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#include "ata.h"
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#include "atadisk.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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#include <vm/vm.h>
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#include <vm/vm_prot.h>
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#include <vm/pmap.h>
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#include <vm/vm_page.h>
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#include <vm/vm_object.h>
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#include <machine/clock.h>
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#include <machine/md_var.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_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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static d_dump_t addump;
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static struct cdevsw ad_cdevsw = {
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/* open */ adopen,
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/* close */ adclose,
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/* read */ physread,
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/* write */ physwrite,
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/* ioctl */ adioctl,
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/* stop */ nostop,
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/* reset */ noreset,
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/* devtotty */ nodevtotty,
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/* poll */ nopoll,
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/* mmap */ nommap,
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/* strategy */ adstrategy,
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/* name */ "ad",
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/* parms */ noparms,
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/* maj */ 116,
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/* dump */ addump,
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/* psize */ adpsize,
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/* flags */ D_DISK,
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/* maxio */ 0,
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/* bmaj */ 30,
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};
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static struct cdevsw fakewd_cdevsw;
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/* misc defines */
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#define UNIT(dev) (minor(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_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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int32_t ad_timeout(char *data);
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static void ad_drvinit(void);
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/* internal vars */
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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 __inline int
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apiomode(struct ata_params *ap)
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{
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if ((ap->atavalid & 2) == 2) {
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if ((ap->apiomodes & 2) == 2) return 4;
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if ((ap->apiomodes & 1) == 1) return 3;
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}
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return -1;
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}
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static __inline int
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wdmamode(struct ata_params *ap)
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{
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if ((ap->atavalid & 2) == 2) {
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if ((ap->wdmamodes & 4) == 4) return 2;
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if ((ap->wdmamodes & 2) == 2) return 1;
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if ((ap->wdmamodes & 1) == 1) return 0;
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}
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return -1;
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}
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static __inline int
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udmamode(struct ata_params *ap)
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{
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if ((ap->atavalid & 4) == 4) {
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if ((ap->udmamodes & 4) == 4) return 2;
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if ((ap->udmamodes & 2) == 2) return 1;
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if ((ap->udmamodes & 1) == 1) return 0;
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}
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return -1;
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}
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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; ctlr++) {
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if (!atadevices[ctlr]) continue;
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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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if (adp->ata_parm->atavalid & ATA_FLAG_54_58 &&
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adp->ata_parm->lbasize)
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adp->flags |= AD_F_LBA_ENABLED;
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/* use multiple sectors/interrupt if device supports it */
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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, 0, ATA_WAIT_INTR) &&
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ata_wait(adp->controller, adp->unit, ATA_S_DRDY) >= 0)
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adp->transfersize *= secsperint;
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/* use DMA if drive & controller supports it */
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if (!ata_dmainit(adp->controller, adp->unit,
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apiomode(adp->ata_parm),
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wdmamode(adp->ata_parm),
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udmamode(adp->ata_parm)))
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adp->flags |= AD_F_DMA_ENABLED;
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/* use tagged queue if supported */
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if ((adp->num_tags = adp->ata_parm->queuelen & 0x1f))
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adp->flags |= AD_F_TAG_ENABLED;
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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: piomode=%d, dmamode=%d, udmamode=%d\n",
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adnlun,
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apiomode(adp->ata_parm),
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wdmamode(adp->ata_parm),
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udmamode(adp->ata_parm));
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printf("ad%d: %d secs/int, %d depth queue, %s mode\n",
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adnlun, adp->transfersize / DEV_BSIZE, adp->num_tags,
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(adp->flags & AD_F_DMA_ENABLED) ? "DMA" :"PIO");
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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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make_dev(&ad_cdevsw, dkmakeminor(adp->lun, 0, 0),
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UID_ROOT, GID_OPERATOR, 0640, "rad%d", adp->lun);
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make_dev(&ad_cdevsw, dkmakeminor(adp->lun, 0, 0),
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UID_ROOT, GID_OPERATOR, 0640, "ad%d", adp->lun);
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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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/* select drive */
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outb(adp->controller->ioaddr + ATA_DRIVE, ATA_D_IBM | adp->unit);
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DELAY(1);
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ata_command(adp->controller, adp->unit, ATA_C_ATA_IDENTIFY,
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0, 0, 0, 0, 0, ATA_WAIT_INTR);
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if (ata_wait(adp->controller, adp->unit,
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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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/* is this needed anymore ?? SOS XXX */
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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(dev, fmt, 0, &adp->slices, &label);
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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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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(dev, cmd, addr, flags, &adp->slices);
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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 count=%d\n", bp->b_bcount);
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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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biodone(bp);
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return;
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}
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if (dscheck(bp, adp->slices) <= 0) {
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biodone(bp);
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return;
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}
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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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s = splbio();
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bufqdisksort(&adp->queue, bp);
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ad_start(adp);
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splx(s);
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#ifdef AD_DEBUG
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printf("adstrategy: leaving\n");
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#endif
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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);
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}
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int
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addump(dev_t dev)
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{
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struct ad_softc *adp;
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struct disklabel *lp;
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struct ad_request request;
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int32_t lun = UNIT(dev), part = dkpart(dev);
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u_int32_t count, blkno, blkoff;
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vm_offset_t addr = 0;
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static int addoingadump = 0;
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if (addoingadump++ != 0)
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return EFAULT;
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if (lun >= adnlun || !(adp = adtab[lun]))
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return ENXIO;
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if ((adp->slices == NULL) || (lp = dsgetlabel(dev, adp->slices)) == NULL)
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return ENXIO;
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count = (u_long)Maxmem * PAGE_SIZE / lp->d_secsize;
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if ((dumplo < 0) || (dumplo + count > lp->d_partitions[part].p_size))
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return EINVAL;
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blkoff = lp->d_partitions[part].p_offset +
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adp->slices->dss_slices[dkslice(dev)].ds_offset;
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blkno = blkoff + dumplo;
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adp->flags &= ~AD_F_DMA_ENABLED;
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while (count > 0) {
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if (is_physical_memory(addr))
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pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
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trunc_page(addr), VM_PROT_READ, TRUE);
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else
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pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
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trunc_page(0), VM_PROT_READ, TRUE);
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bzero(&request, sizeof(struct ad_request));
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request.device = adp;
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request.blockaddr = blkno;
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request.bytecount = PAGE_SIZE;
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request.data = CADDR1;
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while (request.bytecount > 0) {
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ad_transfer(&request);
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request.donecount += request.currentsize;
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DELAY(20);
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}
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if (addr % (1024 * 1024) == 0) {
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#ifdef HW_WDOG
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if (wdog_tickler)
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(*wdog_tickler)();
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#endif
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printf("%ld ", (long)(count * DEV_BSIZE) / (1024 * 1024));
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}
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blkno += howmany(PAGE_SIZE, lp->d_secsize);
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count -= howmany(PAGE_SIZE, lp->d_secsize);
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addr += PAGE_SIZE;
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}
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if (ata_wait(adp->controller, adp->unit, ATA_S_DRDY | ATA_S_DSC) < 0)
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printf("ad_dump: timeout waiting for final ready\n");
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return 0;
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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 = bufq_first(&adp->queue);
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struct ad_request *request;
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#ifdef AD_DEBUG
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printf("ad_start:\n");
|
|
#endif
|
|
if (!bp)
|
|
return;
|
|
|
|
if (!(request = malloc(sizeof(struct ad_request), M_DEVBUF, M_NOWAIT))) {
|
|
printf("ad_start: out of memory\n");
|
|
return;
|
|
}
|
|
|
|
/* setup request */
|
|
bzero(request, sizeof(struct ad_request));
|
|
request->device = adp;
|
|
request->bp = bp;
|
|
request->blockaddr = bp->b_pblkno;
|
|
request->bytecount = bp->b_bcount;
|
|
request->data = bp->b_data;
|
|
request->flags = (bp->b_flags & B_READ) ? AR_F_READ : 0;
|
|
|
|
/* remove from drive queue */
|
|
bufq_remove(&adp->queue, bp);
|
|
|
|
/* link onto controller queue */
|
|
TAILQ_INSERT_TAIL(&adp->controller->ata_queue, request, chain);
|
|
|
|
/* try to start controller */
|
|
if (adp->controller->active == ATA_IDLE)
|
|
ata_start(adp->controller);
|
|
}
|
|
|
|
void
|
|
ad_transfer(struct ad_request *request)
|
|
{
|
|
struct ad_softc *adp;
|
|
u_int32_t blkno, secsprcyl;
|
|
u_int32_t cylinder, head, sector, count, cmd;
|
|
|
|
/* get request params */
|
|
adp = request->device;
|
|
|
|
/* calculate transfer details */
|
|
blkno = request->blockaddr + (request->donecount / DEV_BSIZE);
|
|
|
|
#ifdef AD_DEBUG
|
|
printf("ad_transfer: blkno=%d\n", blkno);
|
|
#endif
|
|
if (request->donecount == 0) {
|
|
|
|
/* setup transfer parameters */
|
|
count = howmany(request->bytecount, DEV_BSIZE);
|
|
if (count > 256) {
|
|
count = 256;
|
|
printf("ad_transfer: count=%d not supported\n", count);
|
|
}
|
|
|
|
if (adp->flags & AD_F_LBA_ENABLED) {
|
|
sector = (blkno >> 0) & 0xff;
|
|
cylinder = (blkno >> 8) & 0xffff;
|
|
head = ((blkno >> 24) & 0xf) | ATA_D_LBA;
|
|
}
|
|
else {
|
|
secsprcyl = adp->sectors * adp->heads;
|
|
cylinder = blkno / secsprcyl;
|
|
head = (blkno % secsprcyl) / adp->sectors;
|
|
sector = (blkno % adp->sectors) + 1;
|
|
}
|
|
|
|
/* setup first transfer length */
|
|
request->currentsize = min(request->bytecount, adp->transfersize);
|
|
|
|
devstat_start_transaction(&adp->stats);
|
|
|
|
/* does this drive & transfer work with DMA ? */
|
|
request->flags &= ~AR_F_DMA_USED;
|
|
if ((adp->flags & AD_F_DMA_ENABLED) &&
|
|
!ata_dmasetup(adp->controller, adp->unit,
|
|
(void *)request->data, request->bytecount,
|
|
(request->flags & AR_F_READ))) {
|
|
request->flags |= AR_F_DMA_USED;
|
|
cmd = request->flags & AR_F_READ ? ATA_C_READ_DMA : ATA_C_WRITE_DMA;
|
|
request->currentsize = request->bytecount;
|
|
}
|
|
/* does this drive support multi sector transfers ? */
|
|
else if (request->currentsize > DEV_BSIZE)
|
|
cmd = request->flags & AR_F_READ?ATA_C_READ_MULTI:ATA_C_WRITE_MULTI;
|
|
else
|
|
cmd = request->flags & AR_F_READ ? ATA_C_READ : ATA_C_WRITE;
|
|
|
|
ata_command(adp->controller, adp->unit, cmd, cylinder, head,
|
|
sector, count, 0, ATA_IMMEDIATE);
|
|
}
|
|
|
|
/* if this is a DMA transaction start it, return and wait for interrupt */
|
|
if (request->flags & AR_F_DMA_USED) {
|
|
ata_dmastart(adp->controller, adp->unit);
|
|
#ifdef AD_DEBUG
|
|
printf("ad_transfer: return waiting for DMA interrupt\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/* calculate this transfer length */
|
|
request->currentsize = min(request->bytecount, adp->transfersize);
|
|
|
|
/* if this is a PIO read operation, return and wait for interrupt */
|
|
if (request->flags & AR_F_READ) {
|
|
#ifdef AD_DEBUG
|
|
printf("ad_transfer: return waiting for PIO read interrupt\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/* ready to write PIO data ? */
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ) < 0) {
|
|
printf("ad_transfer: timeout waiting for DRQ");
|
|
}
|
|
|
|
/* output the data */
|
|
#if 0
|
|
outsw(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int16_t));
|
|
#else
|
|
outsl(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int32_t));
|
|
#endif
|
|
request->bytecount -= request->currentsize;
|
|
#ifdef AD_DEBUG
|
|
printf("ad_transfer: return wrote data\n");
|
|
#endif
|
|
}
|
|
|
|
int32_t
|
|
ad_interrupt(struct ad_request *request)
|
|
{
|
|
struct ad_softc *adp = request->device;
|
|
int32_t dma_stat = 0;
|
|
|
|
/* finish DMA transfer */
|
|
if (request->flags & AR_F_DMA_USED)
|
|
dma_stat = ata_dmadone(adp->controller, adp->unit);
|
|
|
|
/* get drive status */
|
|
if (ata_wait(adp->controller, adp->unit, 0) < 0)
|
|
printf("ad_interrupt: timeout waiting for status");
|
|
if (adp->controller->status & (ATA_S_ERROR | ATA_S_CORR) ||
|
|
(request->flags & AR_F_DMA_USED && dma_stat != ATA_BMSTAT_INTERRUPT)) {
|
|
oops:
|
|
printf("ad%d: status=%02x error=%02x\n",
|
|
adp->lun, adp->controller->status, adp->controller->error);
|
|
if (adp->controller->status & ATA_S_ERROR) {
|
|
printf("ad_interrupt: hard error\n");
|
|
request->flags |= AR_F_ERROR;
|
|
}
|
|
if (adp->controller->status & ATA_S_CORR)
|
|
printf("ad_interrupt: soft error ECC corrected\n");
|
|
}
|
|
|
|
/* if this was a PIO read operation, get the data */
|
|
if (!(request->flags & AR_F_DMA_USED) &&
|
|
((request->flags & (AR_F_READ | AR_F_ERROR)) == AR_F_READ)) {
|
|
|
|
/* 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, adp->unit,
|
|
ATA_S_DRDY | ATA_S_DSC | ATA_S_DRQ) != 0){
|
|
printf("ad_interrupt: read error detected late");
|
|
goto oops;
|
|
}
|
|
|
|
/* data ready, read in */
|
|
#if 0
|
|
insw(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int16_t));
|
|
#else
|
|
insl(adp->controller->ioaddr + ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int32_t));
|
|
#endif
|
|
request->bytecount -= request->currentsize;
|
|
#ifdef AD_DEBUG
|
|
printf("ad_interrupt: read in data\n");
|
|
#endif
|
|
}
|
|
|
|
/* if this was a DMA operation finish up */
|
|
if ((request->flags & AR_F_DMA_USED) && !(request->flags & AR_F_ERROR))
|
|
request->bytecount -= request->currentsize;
|
|
|
|
/* finish up this tranfer, check for more work on this buffer */
|
|
if (adp->controller->active == ATA_ACTIVE_ATA) {
|
|
if (request->flags & AR_F_ERROR) {
|
|
request->bp->b_error = EIO;
|
|
request->bp->b_flags |= B_ERROR;
|
|
}
|
|
else {
|
|
request->donecount += request->currentsize;
|
|
#ifdef AD_DEBUG
|
|
printf("ad_interrupt: %s cmd OK\n",
|
|
(request->flags & AR_F_READ) ? "read" : "write");
|
|
#endif
|
|
if (request->bytecount > 0) {
|
|
ad_transfer(request);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
}
|
|
|
|
TAILQ_REMOVE(&adp->controller->ata_queue, request, chain);
|
|
request->bp->b_resid = request->bytecount;
|
|
biodone(request->bp);
|
|
devstat_end_transaction(&adp->stats, request->donecount,
|
|
DEVSTAT_TAG_NONE,
|
|
(request->flags & AR_F_READ) ?
|
|
DEVSTAT_READ : DEVSTAT_WRITE);
|
|
}
|
|
free(request, M_DEVBUF);
|
|
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 != ATA_IDLE)
|
|
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 int32_t ad_devsw_installed = 0;
|
|
|
|
if (!ad_devsw_installed) {
|
|
if (!ad_cdevsw.d_maxio)
|
|
ad_cdevsw.d_maxio = 256 * DEV_BSIZE;
|
|
cdevsw_add(&ad_cdevsw);
|
|
fakewd_cdevsw = ad_cdevsw;
|
|
fakewd_cdevsw.d_maj = 3;
|
|
fakewd_cdevsw.d_bmaj = 0;
|
|
fakewd_cdevsw.d_name = "wd";
|
|
cdevsw_add(&fakewd_cdevsw); /* grab wd entries too */
|
|
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 */
|