b54e59b479
need this RSN. Remove a pointless warning in the root device locating code. Remove the "wd" compatibility name from the "ad" driver. WARNING: If you have not updated to use /dev/wd* in your /etc/fstab and modern bootblocks, it would be a very good idea to do so BEFORE you upgrade your kernel.
610 lines
18 KiB
C
610 lines
18 KiB
C
/*-
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* Copyright (c) 1998,1999,2000 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 "apm.h"
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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/kernel.h>
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#include <sys/proc.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 <vm/vm.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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/* 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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/* bmaj */ 30
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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_timeout(struct ad_request *);
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static int32_t 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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MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
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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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void
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ad_attach(struct ata_softc *scp, int32_t device)
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{
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struct ad_softc *adp;
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dev_t dev;
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int32_t secsperint;
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if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT))) {
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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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bzero(adp, sizeof(struct ad_softc));
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scp->dev_softc[ATA_DEV(device)] = adp;
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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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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_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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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, ATA_S_READY) >= 0)
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adp->transfersize *= secsperint;
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/* enable read/write 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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printf("ad%d: enabling readahead cache failed\n", adp->lun);
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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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printf("ad%d: enabling write cache failed\n", adp->lun);
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/* use DMA if drive & controller supports it */
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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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/* use tagged queueing if supported (not yet) */
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if ((adp->num_tags = (AD_PARAM->queuelen & 0x1f) + 1))
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adp->flags |= AD_F_TAG_ENABLED;
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if (bootverbose) {
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printf("ad%d: <%.40s/%.8s> ATA-%d disk at ata%d as %s\n",
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adp->lun, AD_PARAM->model, AD_PARAM->revision,
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ad_version(AD_PARAM->versmajor), device_get_unit(scp->dev),
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(adp->unit == ATA_MASTER) ? "master" : "slave");
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printf("ad%d: %luMB (%u sectors), %u cyls, %u heads, %u S/T, %u B/S\n",
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adp->lun, adp->total_secs / ((1024L * 1024L)/DEV_BSIZE),
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adp->total_secs,
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adp->total_secs / (adp->heads * adp->sectors),
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adp->heads, adp->sectors, DEV_BSIZE);
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printf("ad%d: %d secs/int, %d depth queue, %s\n",
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adp->lun, adp->transfersize / DEV_BSIZE, adp->num_tags,
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ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
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printf("ad%d: piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
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adp->lun, ata_pmode(AD_PARAM), ata_wmode(AD_PARAM),
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ata_umode(AD_PARAM), AD_PARAM->cblid);
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}
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else
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printf("ad%d: %luMB <%.40s> [%d/%d/%d] at ata%d-%s using %s\n",
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adp->lun, adp->total_secs / ((1024L * 1024L) / DEV_BSIZE),
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AD_PARAM->model, adp->total_secs / (adp->heads * adp->sectors),
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adp->heads, adp->sectors, device_get_unit(scp->dev),
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(adp->unit == ATA_MASTER) ? "master" : "slave",
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ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
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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->dev1 = dev;
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bioq_init(&adp->queue);
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}
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void
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ad_detach(struct ad_softc *adp)
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{
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disk_invalidate(&adp->disk);
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disk_destroy(adp->dev1);
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devstat_remove_entry(&adp->stats);
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ata_free_lun(&adp_lun_map, adp->lun);
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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, int32_t flags, int32_t fmt, struct proc *p)
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{
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struct ad_softc *adp = dev->si_drv1;
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struct disklabel *dl;
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dl = &adp->disk.d_label;
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bzero(dl, sizeof *dl);
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dl->d_secsize = DEV_BSIZE;
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dl->d_nsectors = adp->sectors;
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dl->d_ntracks = adp->heads;
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dl->d_ncylinders = adp->total_secs / (adp->heads * adp->sectors);
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dl->d_secpercyl = adp->sectors * adp->heads;
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dl->d_secperunit = adp->total_secs;
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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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int32_t s;
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/* if it's a null transfer, return immediatly. */
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if (bp->bio_bcount == 0) {
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bp->bio_resid = 0;
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biodone(bp);
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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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int error;
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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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while (count > 0) {
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void *va;
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DELAY(1000);
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if (is_physical_memory(addr))
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va = pmap_kenter_temporary(trunc_page(addr));
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else
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va = pmap_kenter_temporary(trunc_page(0));
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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 = (int8_t *) 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 (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, secsize);
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count -= howmany(PAGE_SIZE, secsize);
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addr += PAGE_SIZE;
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if (cncheckc() != -1)
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return EINTR;
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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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printf("ad%d: timeout waiting for final ready\n", adp->lun);
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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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if (!bp)
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return;
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if (!(request = malloc(sizeof(struct ad_request), M_AD, M_NOWAIT))) {
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printf("ad%d: out of memory in start\n", adp->lun);
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return;
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}
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/* setup request */
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bzero(request, sizeof(struct ad_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->flags = (bp->bio_cmd == BIO_READ) ? ADR_F_READ : 0;
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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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void
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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 (panicstr)
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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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printf("ad%d: count %d size transfers not supported\n",
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adp->lun, 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,
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(void *)request->data, request->bytecount,
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(request->flags & ADR_F_READ))) {
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request->flags |= ADR_F_DMA_USED;
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cmd = request->flags&ADR_F_READ ? ATA_C_READ_DMA : ATA_C_WRITE_DMA;
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request->currentsize = request->bytecount;
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}
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/* does this drive support multi sector transfers ? */
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else if (request->currentsize > DEV_BSIZE)
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cmd = request->flags&ADR_F_READ ? ATA_C_READ_MUL : ATA_C_WRITE_MUL;
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/* just plain old single sector transfer */
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else
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cmd = request->flags&ADR_F_READ ? ATA_C_READ : ATA_C_WRITE;
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if (ata_command(adp->controller, adp->unit, cmd,
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cylinder, head, sector, count, 0, ATA_IMMEDIATE)) {
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printf("ad%d: error executing command\n", adp->lun);
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goto transfer_failed;
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}
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/* if this is a DMA transfer, start it, return and wait for interrupt */
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if (request->flags & ADR_F_DMA_USED) {
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ata_dmastart(adp->controller);
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return;
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}
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}
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/* calculate this transfer length */
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request->currentsize = min(request->bytecount, adp->transfersize);
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/* if this is a PIO read operation, return and wait for interrupt */
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if (request->flags & ADR_F_READ)
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return;
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/* ready to write PIO data ? */
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if (ata_wait(adp->controller, adp->unit,
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(ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0) {
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printf("ad%d: timeout waiting for DRQ", adp->lun);
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goto transfer_failed;
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}
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/* output the data */
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if (adp->controller->flags & ATA_USE_16BIT)
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outsw(adp->controller->ioaddr + ATA_DATA,
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(void *)((uintptr_t)request->data + request->donecount),
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request->currentsize / sizeof(int16_t));
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else
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outsl(adp->controller->ioaddr + ATA_DATA,
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(void *)((uintptr_t)request->data + request->donecount),
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request->currentsize / sizeof(int32_t));
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return;
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transfer_failed:
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untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
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request->bp->bio_error = EIO;
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request->bp->bio_flags |= BIO_ERROR;
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request->bp->bio_resid = request->bytecount;
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devstat_end_transaction_bio(&adp->stats, request->bp);
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biodone(request->bp);
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free(request, M_AD);
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}
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int32_t
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ad_interrupt(struct ad_request *request)
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{
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struct ad_softc *adp = request->device;
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int32_t dma_stat = 0;
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/* finish DMA transfer */
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if (request->flags & ADR_F_DMA_USED)
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dma_stat = ata_dmadone(adp->controller);
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/* get drive status */
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if (ata_wait(adp->controller, adp->unit, 0) < 0) {
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printf("ad%d: timeout waiting for status", adp->lun);
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request->flags |= ADR_F_ERROR;
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}
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/* do we have a corrected soft error ? */
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if (adp->controller->status & ATA_S_CORR)
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printf("ad%d: soft error ECC corrected\n", adp->lun);
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/* did any real errors happen ? */
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if ((adp->controller->status & ATA_S_ERROR) ||
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((request->flags & ADR_F_DMA_USED) && (dma_stat & ATA_BMSTAT_ERROR))) {
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printf("ad%d: %s %s ERROR blk# %d", adp->lun,
|
|
(adp->controller->error & ATA_E_ICRC) ? "UDMA ICRC" : "HARD",
|
|
(request->flags & ADR_F_READ) ? "READ" : "WRITE",
|
|
request->blockaddr + (request->donecount / DEV_BSIZE));
|
|
|
|
/* 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);
|
|
|
|
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);
|
|
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)
|
|
printf("ad%d: DMA problem fallback to PIO mode\n", adp->lun);
|
|
|
|
/* 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))
|
|
printf("ad%d: read interrupt arrived early", adp->lun);
|
|
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
(ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) != 0) {
|
|
printf("ad%d: read error detected (too) late", adp->lun);
|
|
request->flags |= ADR_F_ERROR;
|
|
}
|
|
else {
|
|
/* data ready, read in */
|
|
if (adp->controller->flags & ATA_USE_16BIT)
|
|
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));
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
devstat_end_transaction_bio(&adp->stats, request->bp);
|
|
biodone(request->bp);
|
|
free(request, M_AD);
|
|
return ATA_OP_FINISHED;
|
|
}
|
|
|
|
void
|
|
ad_reinit(struct ad_softc *adp)
|
|
{
|
|
/* reinit disk parameters */
|
|
ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI, 0, 0, 0,
|
|
adp->transfersize / DEV_BSIZE, 0, ATA_WAIT_READY);
|
|
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);
|
|
}
|
|
|
|
static void
|
|
ad_timeout(struct ad_request *request)
|
|
{
|
|
struct ad_softc *adp = request->device;
|
|
int32_t s = splbio();
|
|
|
|
adp->controller->running = NULL;
|
|
printf("ad%d: %s command timeout - resetting\n",
|
|
adp->lun, (request->flags & ADR_F_READ) ? "READ" : "WRITE");
|
|
|
|
if (request->flags & ADR_F_DMA_USED) {
|
|
ata_dmadone(adp->controller);
|
|
if (request->retries == AD_MAX_RETRIES) {
|
|
ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM), -1,-1);
|
|
printf("ad%d: trying fallback to PIO mode\n", adp->lun);
|
|
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;
|
|
devstat_end_transaction_bio(&adp->stats, request->bp);
|
|
biodone(request->bp);
|
|
free(request, M_AD);
|
|
}
|
|
ata_reinit(adp->controller);
|
|
splx(s);
|
|
}
|
|
|
|
static int32_t
|
|
ad_version(u_int16_t version)
|
|
{
|
|
int32_t bit;
|
|
|
|
if (version == 0xffff)
|
|
return 0;
|
|
for (bit = 15; bit >= 0; bit--)
|
|
if (version & (1<<bit))
|
|
return bit;
|
|
return 0;
|
|
}
|