969 lines
29 KiB
C
969 lines
29 KiB
C
/*-
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* Copyright (c) 1998,1999,2000,2001 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 "opt_global.h"
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#include "opt_ata.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ata.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/devicestat.h>
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#include <sys/cons.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/md_var.h>
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#include <machine/bus.h>
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#include <sys/rman.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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#include <dev/ata/ata-raid.h>
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/* device structures */
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static d_open_t adopen;
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static d_strategy_t adstrategy;
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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 */ nullclose,
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/* read */ physread,
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/* write */ physwrite,
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/* ioctl */ noioctl,
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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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/* maj */ 116,
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/* dump */ addump,
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/* psize */ nopsize,
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/* flags */ D_DISK,
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};
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static struct cdevsw addisk_cdevsw;
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/* prototypes */
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static void ad_invalidatequeue(struct ad_softc *, struct ad_request *);
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static int ad_tagsupported(struct ad_softc *);
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static void ad_timeout(struct ad_request *);
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static void ad_free(struct ad_request *);
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static int ad_version(u_int16_t);
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/* internal vars */
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static u_int32_t adp_lun_map = 0;
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static MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
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static int ata_dma, ata_wc, ata_tags;
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TUNABLE_INT_DECL("hw.ata.ata_dma", 1, ata_dma);
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TUNABLE_INT_DECL("hw.ata.wc", 0, ata_wc);
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TUNABLE_INT_DECL("hw.ata.tags", 0, ata_tags);
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/* sysctl vars */
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SYSCTL_DECL(_hw_ata);
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SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RD, &ata_dma, 0,
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"ATA disk DMA mode control");
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SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RD, &ata_wc, 0,
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"ATA disk write caching");
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SYSCTL_INT(_hw_ata, OID_AUTO, tags, CTLFLAG_RD, &ata_tags, 0,
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"ATA disk tagged queuing support");
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/* defines */
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#define AD_MAX_RETRIES 3
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#define AD_PARAM ATA_PARAM(adp->controller, adp->unit)
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/* experimental cache flush on BIO_ORDERED */
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#define ATA_FLUSHCACHE_ON
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void
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ad_attach(struct ata_softc *scp, int device)
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{
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struct ad_softc *adp;
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dev_t dev;
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int secsperint;
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char name[16];
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if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT | M_ZERO))) {
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ata_printf(scp, device, "failed to allocate driver storage\n");
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return;
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}
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adp->controller = scp;
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adp->unit = device;
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#ifdef ATA_STATIC_ID
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adp->lun = (device_get_unit(scp->dev) << 1) + ATA_DEV(device);
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#else
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adp->lun = ata_get_lun(&adp_lun_map);
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#endif
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sprintf(name, "ad%d", adp->lun);
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ata_set_name(scp, device, name);
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adp->heads = AD_PARAM->heads;
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adp->sectors = AD_PARAM->sectors;
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adp->total_secs = AD_PARAM->cylinders * adp->heads * adp->sectors;
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if (AD_PARAM->cylinders == 16383 && adp->total_secs < AD_PARAM->lbasize)
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adp->total_secs = AD_PARAM->lbasize;
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if (ad_version(AD_PARAM->versmajor) &&
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AD_PARAM->atavalid & ATA_FLAG_54_58 && AD_PARAM->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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if (ad_version(AD_PARAM->versmajor)) {
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secsperint = max(1, min(AD_PARAM->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, 0))
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adp->transfersize *= secsperint;
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}
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/* enable read cacheing if not default on device */
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if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
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0, 0, 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR))
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ata_printf(scp, device, "enabling readahead cache failed\n");
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/* enable write cacheing if allowed and not default on device */
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if (ata_wc || ata_tags) {
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if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
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0, 0, 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
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ata_printf(scp, device, "enabling write cache failed\n");
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}
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else {
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if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
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0, 0, 0, 0, ATA_C_F_DIS_WCACHE, ATA_WAIT_INTR))
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ata_printf(scp, device, "disabling write cache failed\n");
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}
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/* use DMA if allowed and if drive/controller supports it */
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if (ata_dma)
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ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM),
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ata_wmode(AD_PARAM), ata_umode(AD_PARAM));
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else
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ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM), -1, -1);
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/* use tagged queueing if allowed and supported */
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if (ata_tags && ad_tagsupported(adp)) {
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adp->num_tags = AD_PARAM->queuelen;
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adp->flags |= AD_F_TAG_ENABLED;
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adp->controller->flags |= ATA_QUEUED;
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if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
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0, 0, 0, 0, ATA_C_F_DIS_RELIRQ, ATA_WAIT_INTR))
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ata_printf(scp, device, "disabling release interrupt failed\n");
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if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
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0, 0, 0, 0, ATA_C_F_DIS_SRVIRQ, ATA_WAIT_INTR))
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ata_printf(scp, device, "disabling service interrupt failed\n");
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}
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devstat_add_entry(&adp->stats, "ad", adp->lun, 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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DEVSTAT_PRIORITY_DISK);
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dev = disk_create(adp->lun, &adp->disk, 0, &ad_cdevsw, &addisk_cdevsw);
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dev->si_drv1 = adp;
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dev->si_iosize_max = 256 * DEV_BSIZE;
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adp->dev = dev;
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bioq_init(&adp->queue);
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/* if this disk belongs to an ATA RAID dont print the probe */
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if (!ar_probe(adp))
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adp->flags |= AD_F_RAID_SUBDISK;
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else
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ad_print(adp, "");
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/* construct the disklabel */
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bzero(&adp->disk.d_label, sizeof(struct disklabel));
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adp->disk.d_label.d_secsize = DEV_BSIZE;
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adp->disk.d_label.d_nsectors = adp->sectors;
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adp->disk.d_label.d_ntracks = adp->heads;
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adp->disk.d_label.d_ncylinders = adp->total_secs/(adp->heads*adp->sectors);
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adp->disk.d_label.d_secpercyl = adp->sectors * adp->heads;
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adp->disk.d_label.d_secperunit = adp->total_secs;
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/* store our softc signalling we are ready to go */
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scp->dev_softc[ATA_DEV(device)] = adp;
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}
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void
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ad_detach(struct ad_softc *adp, int flush)
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{
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struct ad_request *request;
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struct bio *bp;
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adp->flags |= AD_F_DETACHING;
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if (adp->flags & AD_F_RAID_SUBDISK)
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printf("WARNING! detaching RAID subdisk, danger ahead\n");
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ata_printf(adp->controller, adp->unit, "removed from configuration\n");
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ad_invalidatequeue(adp, NULL);
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TAILQ_FOREACH(request, &adp->controller->ata_queue, chain) {
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if (request->device != adp)
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continue;
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TAILQ_REMOVE(&adp->controller->ata_queue, request, chain);
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biofinish(request->bp, NULL, ENXIO);
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ad_free(request);
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}
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while ((bp = bioq_first(&adp->queue))) {
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biofinish(bp, NULL, ENXIO);
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}
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disk_invalidate(&adp->disk);
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disk_destroy(adp->dev);
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devstat_remove_entry(&adp->stats);
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if (flush) {
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if (ata_command(adp->controller, adp->unit, ATA_C_FLUSHCACHE,
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0, 0, 0, 0, 0, ATA_WAIT_READY))
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ata_printf(adp->controller, adp->unit,
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"flushing cache on detach failed\n");
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}
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ata_free_lun(&adp_lun_map, adp->lun);
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adp->controller->dev_softc[ATA_DEV(adp->unit)] = NULL;
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free(adp, M_AD);
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}
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static int
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adopen(dev_t dev, int flags, int fmt, struct proc *p)
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{
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struct ad_softc *adp = dev->si_drv1;
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if (adp->flags & AD_F_RAID_SUBDISK)
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return EBUSY;
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return 0;
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}
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static void
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adstrategy(struct bio *bp)
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{
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struct ad_softc *adp = bp->bio_dev->si_drv1;
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int s;
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if (adp->flags & AD_F_DETACHING) {
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biofinish(bp, NULL, ENXIO);
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return;
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}
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s = splbio();
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bioqdisksort(&adp->queue, bp);
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ata_start(adp->controller);
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splx(s);
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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 = dev->si_drv1;
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struct ad_request request;
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u_int count, blkno, secsize;
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vm_offset_t addr = 0;
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long blkcnt;
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int dumppages = MAXDUMPPGS;
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int error;
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int i;
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if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize)))
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return error;
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if (!adp)
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return ENXIO;
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/* force PIO mode for dumps */
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adp->controller->mode[ATA_DEV(adp->unit)] = ATA_PIO;
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ata_reinit(adp->controller);
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blkcnt = howmany(PAGE_SIZE, secsize);
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while (count > 0) {
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caddr_t va = NULL;
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DELAY(1000);
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if ((count / blkcnt) < dumppages)
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dumppages = count / blkcnt;
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for (i = 0; i < dumppages; ++i) {
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vm_offset_t a = addr + (i * PAGE_SIZE);
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if (is_physical_memory(a))
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va = pmap_kenter_temporary(trunc_page(a), i);
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else
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va = pmap_kenter_temporary(trunc_page(0), i);
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}
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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 * dumppages;
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request.data = va;
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while (request.bytecount > 0) {
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ad_transfer(&request);
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if (request.flags & ADR_F_ERROR)
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return EIO;
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request.donecount += request.currentsize;
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request.bytecount -= request.currentsize;
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DELAY(20);
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}
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if (dumpstatus(addr, (long)(count * DEV_BSIZE)) < 0)
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return EINTR;
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blkno += blkcnt * dumppages;
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count -= blkcnt * dumppages;
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addr += PAGE_SIZE * dumppages;
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}
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if (ata_wait(adp->controller, adp->unit, ATA_S_READY | ATA_S_DSC) < 0)
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ata_printf(adp->controller, adp->unit,
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"timeout waiting for final ready\n");
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return 0;
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}
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void
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ad_start(struct ad_softc *adp)
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{
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struct bio *bp = bioq_first(&adp->queue);
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struct ad_request *request;
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int tag = 0;
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if (!bp)
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return;
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#ifdef ATA_FLUSHCACHE_ON
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/*
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* if BIO_ORDERED is set cache should be flushed, if there are
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* any outstanding requests, hold off and wait for them to finish
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*/
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if (adp->flags & AD_F_TAG_ENABLED &&
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bp->bio_flags & BIO_ORDERED && adp->outstanding > 0)
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return;
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#endif
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/* if tagged queueing enabled get next free tag */
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if (adp->flags & AD_F_TAG_ENABLED) {
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while (tag <= adp->num_tags && adp->tags[tag])
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tag++;
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if (tag > adp->num_tags )
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return;
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}
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if (!(request = malloc(sizeof(struct ad_request), M_AD, M_NOWAIT|M_ZERO))) {
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ata_printf(adp->controller, adp->unit, "out of memory in start\n");
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return;
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}
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/* setup request */
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request->device = adp;
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request->bp = bp;
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request->blockaddr = bp->bio_pblkno;
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request->bytecount = bp->bio_bcount;
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request->data = bp->bio_data;
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request->tag = tag;
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if (bp->bio_cmd == BIO_READ)
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request->flags |= ADR_F_READ;
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if (adp->controller->mode[ATA_DEV(adp->unit)] >= ATA_DMA) {
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if (!(request->dmatab = ata_dmaalloc(adp->controller, adp->unit)))
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adp->controller->mode[ATA_DEV(adp->unit)] = ATA_PIO;
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}
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/* insert in tag array */
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adp->tags[tag] = request;
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/* remove from drive queue */
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bioq_remove(&adp->queue, bp);
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/* link onto controller queue */
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TAILQ_INSERT_TAIL(&adp->controller->ata_queue, request, chain);
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}
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int
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ad_transfer(struct ad_request *request)
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{
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struct ad_softc *adp;
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u_int32_t blkno, secsprcyl;
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u_int32_t cylinder, head, sector, count, cmd;
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/* get request params */
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adp = request->device;
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/* calculate transfer details */
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blkno = request->blockaddr + (request->donecount / DEV_BSIZE);
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if (request->donecount == 0) {
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/* start timeout for this transfer */
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if (dumping)
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request->timeout_handle.callout = NULL;
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else
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request->timeout_handle =
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timeout((timeout_t*)ad_timeout, request, 10 * hz);
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/* setup transfer parameters */
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count = howmany(request->bytecount, DEV_BSIZE);
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if (count > 256) {
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count = 256;
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ata_printf(adp->controller, adp->unit,
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"count %d size transfers not supported\n", count);
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}
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if (adp->flags & AD_F_LBA_ENABLED) {
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sector = (blkno >> 0) & 0xff;
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cylinder = (blkno >> 8) & 0xffff;
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head = ((blkno >> 24) & 0xf) | ATA_D_LBA;
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}
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else {
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secsprcyl = adp->sectors * adp->heads;
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cylinder = blkno / secsprcyl;
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head = (blkno % secsprcyl) / adp->sectors;
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sector = (blkno % adp->sectors) + 1;
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}
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/* setup first transfer length */
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request->currentsize = min(request->bytecount, adp->transfersize);
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devstat_start_transaction(&adp->stats);
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/* does this drive & transfer work with DMA ? */
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request->flags &= ~ADR_F_DMA_USED;
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if (adp->controller->mode[ATA_DEV(adp->unit)] >= ATA_DMA &&
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!ata_dmasetup(adp->controller, adp->unit, request->dmatab,
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request->data, request->bytecount)) {
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request->flags |= ADR_F_DMA_USED;
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request->currentsize = request->bytecount;
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/* do we have tags enabled ? */
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if (adp->flags & AD_F_TAG_ENABLED) {
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cmd = (request->flags & ADR_F_READ) ?
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ATA_C_READ_DMA_QUEUED : ATA_C_WRITE_DMA_QUEUED;
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if (ata_command(adp->controller, adp->unit, cmd,
|
|
cylinder, head, sector, request->tag << 3,
|
|
count, ATA_IMMEDIATE)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"error executing command");
|
|
goto transfer_failed;
|
|
}
|
|
if (ata_wait(adp->controller, adp->unit, ATA_S_READY)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"timeout waiting for READY\n");
|
|
goto transfer_failed;
|
|
}
|
|
adp->outstanding++;
|
|
|
|
/* if ATA bus RELEASE check for SERVICE */
|
|
if (adp->flags & AD_F_TAG_ENABLED &&
|
|
ATA_INB(adp->controller->r_io, ATA_IREASON) & ATA_I_RELEASE) {
|
|
return ad_service(adp, 1);
|
|
}
|
|
}
|
|
else {
|
|
cmd = (request->flags & ADR_F_READ) ?
|
|
ATA_C_READ_DMA : ATA_C_WRITE_DMA;
|
|
|
|
if (ata_command(adp->controller, adp->unit, cmd, cylinder,
|
|
head, sector, count, 0, ATA_IMMEDIATE)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"error executing command");
|
|
goto transfer_failed;
|
|
}
|
|
#if 0
|
|
/*
|
|
* wait for data transfer phase
|
|
*
|
|
* well this should be here acording to specs, but
|
|
* promise controllers doesn't like it, they lockup!
|
|
* thats probably why tags doesn't work on the promise
|
|
* as this is needed there...
|
|
*/
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
ATA_S_READY | ATA_S_DRQ)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"timeout waiting for data phase\n");
|
|
goto transfer_failed;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* start transfer, return and wait for interrupt */
|
|
ata_dmastart(adp->controller, adp->unit,
|
|
request->dmatab, request->flags & ADR_F_READ);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
|
|
/* does this drive support multi sector transfers ? */
|
|
if (request->currentsize > DEV_BSIZE)
|
|
cmd = request->flags&ADR_F_READ ? ATA_C_READ_MUL : ATA_C_WRITE_MUL;
|
|
|
|
/* just plain old single sector transfer */
|
|
else
|
|
cmd = request->flags&ADR_F_READ ? ATA_C_READ : ATA_C_WRITE;
|
|
|
|
if (ata_command(adp->controller, adp->unit, cmd,
|
|
cylinder, head, sector, count, 0, ATA_IMMEDIATE)) {
|
|
ata_printf(adp->controller, adp->unit, "error executing command");
|
|
goto transfer_failed;
|
|
}
|
|
}
|
|
|
|
/* 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 & ADR_F_READ)
|
|
return ATA_OP_CONTINUES;
|
|
|
|
/* ready to write PIO data ? */
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
(ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0) {
|
|
ata_printf(adp->controller, adp->unit, "timeout waiting for DRQ");
|
|
goto transfer_failed;
|
|
}
|
|
|
|
/* output the data */
|
|
if (adp->controller->flags & ATA_USE_16BIT)
|
|
ATA_OUTSW(adp->controller->r_io, ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int16_t));
|
|
else
|
|
ATA_OUTSL(adp->controller->r_io, ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int32_t));
|
|
return ATA_OP_CONTINUES;
|
|
|
|
transfer_failed:
|
|
untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
|
|
ad_invalidatequeue(adp, request);
|
|
printf(" - resetting\n");
|
|
|
|
/* if retries still permit, reinject this request */
|
|
if (request->retries++ < AD_MAX_RETRIES)
|
|
TAILQ_INSERT_HEAD(&adp->controller->ata_queue, request, chain);
|
|
else {
|
|
/* retries all used up, return error */
|
|
request->bp->bio_error = EIO;
|
|
request->bp->bio_flags |= BIO_ERROR;
|
|
request->bp->bio_resid = request->bytecount;
|
|
biofinish(request->bp, &adp->stats, 0);
|
|
ad_free(request);
|
|
}
|
|
ata_reinit(adp->controller);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
|
|
int
|
|
ad_interrupt(struct ad_request *request)
|
|
{
|
|
struct ad_softc *adp = request->device;
|
|
int dma_stat = 0;
|
|
|
|
if (request->flags & ADR_F_FLUSHCACHE)
|
|
goto finish;
|
|
|
|
/* finish DMA transfer */
|
|
if (request->flags & ADR_F_DMA_USED)
|
|
dma_stat = ata_dmadone(adp->controller);
|
|
|
|
/* do we have a corrected soft error ? */
|
|
if (adp->controller->status & ATA_S_CORR)
|
|
diskerr(request->bp, "soft error (ECC corrected)",
|
|
request->blockaddr + (request->donecount / DEV_BSIZE),
|
|
&adp->disk.d_label);
|
|
|
|
/* did any real errors happen ? */
|
|
if ((adp->controller->status & ATA_S_ERROR) ||
|
|
(request->flags & ADR_F_DMA_USED && dma_stat & ATA_BMSTAT_ERROR)) {
|
|
adp->controller->error = ATA_INB(adp->controller->r_io, ATA_ERROR);
|
|
diskerr(request->bp,
|
|
(adp->controller->error & ATA_E_ICRC) ?
|
|
"UDMA ICRC error" : "hard error",
|
|
request->blockaddr + (request->donecount / DEV_BSIZE),
|
|
&adp->disk.d_label);
|
|
|
|
/* if this is a UDMA CRC error, reinject request */
|
|
if (request->flags & ADR_F_DMA_USED &&
|
|
adp->controller->error & ATA_E_ICRC) {
|
|
untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
|
|
ad_invalidatequeue(adp, request);
|
|
|
|
if (request->retries++ < AD_MAX_RETRIES)
|
|
printf(" retrying\n");
|
|
else {
|
|
ata_dmainit(adp->controller, adp->unit,
|
|
ata_pmode(AD_PARAM), -1, -1);
|
|
printf(" falling back to PIO mode\n");
|
|
}
|
|
TAILQ_INSERT_HEAD(&adp->controller->ata_queue, request, chain);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
/* if using DMA, try once again in PIO mode */
|
|
if (request->flags & ADR_F_DMA_USED) {
|
|
untimeout((timeout_t *)ad_timeout, request,request->timeout_handle);
|
|
ad_invalidatequeue(adp, request);
|
|
ata_dmainit(adp->controller, adp->unit,
|
|
ata_pmode(AD_PARAM), -1, -1);
|
|
request->flags |= ADR_F_FORCE_PIO;
|
|
TAILQ_INSERT_HEAD(&adp->controller->ata_queue, request, chain);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
request->flags |= ADR_F_ERROR;
|
|
printf(" status=%02x error=%02x\n",
|
|
adp->controller->status, adp->controller->error);
|
|
}
|
|
|
|
/* if we arrived here with forced PIO mode, DMA doesn't work right */
|
|
if (request->flags & ADR_F_FORCE_PIO)
|
|
ata_printf(adp->controller, adp->unit,
|
|
"DMA problem fallback to PIO mode\n");
|
|
|
|
/* if this was a PIO read operation, get the data */
|
|
if (!(request->flags & ADR_F_DMA_USED) &&
|
|
(request->flags & (ADR_F_READ | ADR_F_ERROR)) == ADR_F_READ) {
|
|
|
|
/* ready to receive data? */
|
|
if ((adp->controller->status & (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ))
|
|
!= (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ))
|
|
ata_printf(adp->controller, adp->unit,
|
|
"read interrupt arrived early");
|
|
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
(ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) != 0) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"read error detected (too) late");
|
|
request->flags |= ADR_F_ERROR;
|
|
}
|
|
else {
|
|
/* data ready, read in */
|
|
if (adp->controller->flags & ATA_USE_16BIT)
|
|
ATA_INSW(adp->controller->r_io, ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int16_t));
|
|
else
|
|
ATA_INSL(adp->controller->r_io, ATA_DATA,
|
|
(void *)((uintptr_t)request->data + request->donecount),
|
|
request->currentsize / sizeof(int32_t));
|
|
}
|
|
}
|
|
|
|
/* finish up transfer */
|
|
if (request->flags & ADR_F_ERROR) {
|
|
request->bp->bio_error = EIO;
|
|
request->bp->bio_flags |= BIO_ERROR;
|
|
}
|
|
else {
|
|
request->bytecount -= request->currentsize;
|
|
request->donecount += request->currentsize;
|
|
if (request->bytecount > 0) {
|
|
ad_transfer(request);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
}
|
|
|
|
/* disarm timeout for this transfer */
|
|
untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
|
|
|
|
request->bp->bio_resid = request->bytecount;
|
|
|
|
#ifdef ATA_FLUSHCACHE_ON
|
|
if (request->bp->bio_flags & BIO_ORDERED) {
|
|
request->flags |= ADR_F_FLUSHCACHE;
|
|
if (ata_command(adp->controller, adp->unit, ATA_C_FLUSHCACHE,
|
|
0, 0, 0, 0, 0, ATA_IMMEDIATE))
|
|
ata_printf(adp->controller, adp->unit, "flushing cache failed\n");
|
|
else
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
#endif
|
|
finish:
|
|
biofinish(request->bp, &adp->stats, 0);
|
|
ad_free(request);
|
|
adp->outstanding--;
|
|
|
|
/* check for SERVICE (tagged operations only) */
|
|
return ad_service(adp, 1);
|
|
}
|
|
|
|
int
|
|
ad_service(struct ad_softc *adp, int change)
|
|
{
|
|
/* do we have to check the other device on this channel ? */
|
|
if (adp->controller->flags & ATA_QUEUED && change) {
|
|
int device = adp->unit;
|
|
|
|
if (adp->unit == ATA_MASTER) {
|
|
if (adp->controller->devices & ATA_ATA_SLAVE &&
|
|
((struct ad_softc *)
|
|
(adp->controller->dev_softc[ATA_DEV(ATA_SLAVE)]))->flags &
|
|
AD_F_TAG_ENABLED)
|
|
device = ATA_SLAVE;
|
|
}
|
|
else {
|
|
if (adp->controller->devices & ATA_ATA_MASTER &&
|
|
((struct ad_softc *)
|
|
(adp->controller->dev_softc[ATA_DEV(ATA_MASTER)]))->flags &
|
|
AD_F_TAG_ENABLED)
|
|
device = ATA_MASTER;
|
|
}
|
|
if (device != adp->unit &&
|
|
((struct ad_softc *)
|
|
(adp->controller->dev_softc[ATA_DEV(device)]))->outstanding > 0) {
|
|
ATA_OUTB(adp->controller->r_io, ATA_DRIVE, ATA_D_IBM | device);
|
|
adp = adp->controller->dev_softc[ATA_DEV(device)];
|
|
DELAY(1);
|
|
}
|
|
}
|
|
adp->controller->status = ATA_INB(adp->controller->r_altio, ATA_ALTSTAT);
|
|
|
|
/* do we have a SERVICE request from the drive ? */
|
|
if (adp->flags & AD_F_TAG_ENABLED &&
|
|
adp->outstanding > 0 &&
|
|
adp->controller->status & ATA_S_SERVICE) {
|
|
struct ad_request *request;
|
|
int tag;
|
|
|
|
/* check for error */
|
|
if (adp->controller->status & ATA_S_ERROR) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"Oops! controller says s=0x%02x e=0x%02x\n",
|
|
adp->controller->status, adp->controller->error);
|
|
ad_invalidatequeue(adp, NULL);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
/* issue SERVICE cmd */
|
|
if (ata_command(adp->controller, adp->unit, ATA_C_SERVICE,
|
|
0, 0, 0, 0, 0, ATA_IMMEDIATE)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"problem executing SERVICE cmd\n");
|
|
ad_invalidatequeue(adp, NULL);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
/* setup the transfer environment when ready */
|
|
if (ata_wait(adp->controller, adp->unit, ATA_S_READY)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"problem issueing SERVICE tag=%d s=0x%02x e=0x%02x\n",
|
|
ATA_INB(adp->controller->r_io, ATA_COUNT) >> 3,
|
|
adp->controller->status, adp->controller->error);
|
|
ad_invalidatequeue(adp, NULL);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
tag = ATA_INB(adp->controller->r_io, ATA_COUNT) >> 3;
|
|
if (!(request = adp->tags[tag])) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"no request for tag=%d\n", tag);
|
|
ad_invalidatequeue(adp, NULL);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
adp->controller->active = ATA_ACTIVE_ATA;
|
|
adp->controller->running = request;
|
|
request->serv++;
|
|
|
|
/* start DMA transfer when ready */
|
|
if (ata_wait(adp->controller, adp->unit, ATA_S_READY | ATA_S_DRQ)) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"timeout waiting for data phase s=%02x e=%02x\n",
|
|
adp->controller->status, adp->controller->error);
|
|
ad_invalidatequeue(adp, NULL);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
ata_dmastart(adp->controller, adp->unit,
|
|
request->dmatab, request->flags & ADR_F_READ);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
static void
|
|
ad_free(struct ad_request *request)
|
|
{
|
|
int s = splbio();
|
|
|
|
if (request->dmatab)
|
|
free(request->dmatab, M_DEVBUF);
|
|
request->device->tags[request->tag] = NULL;
|
|
free(request, M_AD);
|
|
|
|
splx(s);
|
|
}
|
|
|
|
static void
|
|
ad_invalidatequeue(struct ad_softc *adp, struct ad_request *request)
|
|
{
|
|
/* if tags used invalidate all other tagged transfers */
|
|
if (adp->flags & AD_F_TAG_ENABLED) {
|
|
struct ad_request *tmpreq;
|
|
int tag;
|
|
|
|
ata_printf(adp->controller, adp->unit,"invalidating queued requests\n");
|
|
for (tag = 0; tag <= adp->num_tags; tag++) {
|
|
tmpreq = adp->tags[tag];
|
|
adp->tags[tag] = NULL;
|
|
if (tmpreq == request || tmpreq == NULL)
|
|
continue;
|
|
untimeout((timeout_t *)ad_timeout, tmpreq, tmpreq->timeout_handle);
|
|
TAILQ_INSERT_HEAD(&adp->controller->ata_queue, tmpreq, chain);
|
|
}
|
|
if (ata_command(adp->controller, adp->unit, ATA_C_NOP,
|
|
0, 0, 0, 0, ATA_C_F_FLUSHQUEUE, ATA_WAIT_READY))
|
|
ata_printf(adp->controller, adp->unit, "flush queue failed\n");
|
|
adp->outstanding = 0;
|
|
}
|
|
}
|
|
|
|
static int
|
|
ad_tagsupported(struct ad_softc *adp)
|
|
{
|
|
const char *drives[] = {"IBM-DPTA", "IBM-DTLA", NULL};
|
|
int i = 0;
|
|
|
|
/* Promise controllers doesn't work with tagged queuing */
|
|
if ((adp->controller->chiptype & 0x0000ffff) == 0x0000105a)
|
|
return 0;
|
|
|
|
/* check that drive does DMA, has tags enabled, and is one we know works */
|
|
if (adp->controller->mode[ATA_DEV(adp->unit)] >= ATA_DMA &&
|
|
AD_PARAM->supqueued && AD_PARAM->enabqueued) {
|
|
while (drives[i] != NULL) {
|
|
if (!strncmp(AD_PARAM->model, drives[i], strlen(drives[i])))
|
|
return 1;
|
|
i++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ad_timeout(struct ad_request *request)
|
|
{
|
|
struct ad_softc *adp = request->device;
|
|
int s = splbio();
|
|
|
|
adp->controller->running = NULL;
|
|
ata_printf(adp->controller, adp->unit,
|
|
"%s command timeout tag=%d serv=%d - resetting\n",
|
|
(request->flags & ADR_F_READ) ? "READ" : "WRITE",
|
|
request->tag, request->serv);
|
|
|
|
if (request->flags & ADR_F_DMA_USED) {
|
|
ata_dmadone(adp->controller);
|
|
ad_invalidatequeue(adp, request);
|
|
if (request->retries == AD_MAX_RETRIES) {
|
|
ata_dmainit(adp->controller, adp->unit,
|
|
ata_pmode(AD_PARAM), -1, -1);
|
|
ata_printf(adp->controller, adp->unit,
|
|
"trying fallback to PIO mode\n");
|
|
request->retries = 0;
|
|
}
|
|
}
|
|
|
|
/* if retries still permit, reinject this request */
|
|
if (request->retries++ < AD_MAX_RETRIES) {
|
|
TAILQ_INSERT_HEAD(&adp->controller->ata_queue, request, chain);
|
|
}
|
|
else {
|
|
/* retries all used up, return error */
|
|
request->bp->bio_error = EIO;
|
|
request->bp->bio_flags |= BIO_ERROR;
|
|
biofinish(request->bp, &adp->stats, 0);
|
|
ad_free(request);
|
|
}
|
|
ata_reinit(adp->controller);
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
ad_reinit(struct ad_softc *adp)
|
|
{
|
|
/* reinit disk parameters */
|
|
ad_invalidatequeue(adp, NULL);
|
|
ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI, 0, 0, 0,
|
|
adp->transfersize / DEV_BSIZE, 0, ATA_WAIT_INTR);
|
|
if (adp->controller->mode[ATA_DEV(adp->unit)] >= ATA_DMA)
|
|
ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM),
|
|
ata_wmode(AD_PARAM), ata_umode(AD_PARAM));
|
|
else
|
|
ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM), -1, -1);
|
|
}
|
|
|
|
void
|
|
ad_print(struct ad_softc *adp, char *prepend)
|
|
{
|
|
if (prepend)
|
|
printf("%s", prepend);
|
|
if (bootverbose) {
|
|
ata_printf(adp->controller, adp->unit,
|
|
"<%.40s/%.8s> ATA-%d disk at ata%d-%s\n",
|
|
AD_PARAM->model, AD_PARAM->revision,
|
|
ad_version(AD_PARAM->versmajor),
|
|
device_get_unit(adp->controller->dev),
|
|
(adp->unit == ATA_MASTER) ? "master" : "slave");
|
|
|
|
ata_printf(adp->controller, adp->unit,
|
|
"%luMB (%u sectors), %u C, %u H, %u S, %u B\n",
|
|
adp->total_secs / ((1024L*1024L)/DEV_BSIZE), adp->total_secs,
|
|
adp->total_secs / (adp->heads * adp->sectors),
|
|
adp->heads, adp->sectors, DEV_BSIZE);
|
|
|
|
ata_printf(adp->controller, adp->unit,
|
|
"%d secs/int, %d depth queue, %s%s\n",
|
|
adp->transfersize / DEV_BSIZE, adp->num_tags + 1,
|
|
(adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
|
|
ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
|
|
|
|
ata_printf(adp->controller, adp->unit,
|
|
"piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
|
|
ata_pmode(AD_PARAM), ata_wmode(AD_PARAM),
|
|
ata_umode(AD_PARAM), AD_PARAM->cblid);
|
|
|
|
}
|
|
else
|
|
ata_printf(adp->controller, adp->unit,
|
|
"%luMB <%.40s> [%d/%d/%d] at ata%d-%s %s%s\n",
|
|
adp->total_secs / ((1024L * 1024L) / DEV_BSIZE),
|
|
AD_PARAM->model, adp->total_secs / (adp->heads*adp->sectors),
|
|
adp->heads, adp->sectors,
|
|
device_get_unit(adp->controller->dev),
|
|
(adp->unit == ATA_MASTER) ? "master" : "slave",
|
|
(adp->flags & AD_F_TAG_ENABLED) ? "tagged " : "",
|
|
ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
|
|
}
|
|
|
|
static int
|
|
ad_version(u_int16_t version)
|
|
{
|
|
int bit;
|
|
|
|
if (version == 0xffff)
|
|
return 0;
|
|
for (bit = 15; bit >= 0; bit--)
|
|
if (version & (1<<bit))
|
|
return bit;
|
|
return 0;
|
|
}
|