c244d2de43
(Much of this done by script) Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED. Move b_pblkno and b_iodone_chain to struct bio while we transition, they will be obsoleted once bio structs chain/stack. Add bio_queue field for struct bio aware disksort. Address a lot of stylistic issues brought up by bde.
623 lines
19 KiB
C
623 lines
19 KiB
C
/*-
|
|
* Copyright (c) 1998,1999,2000 Søren Schmidt
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "apm.h"
|
|
#include "opt_global.h"
|
|
#include "opt_ata.h"
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/devicestat.h>
|
|
#include <sys/cons.h>
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_object.h>
|
|
#include <machine/clock.h>
|
|
#include <machine/md_var.h>
|
|
#include <dev/ata/ata-all.h>
|
|
#include <dev/ata/ata-disk.h>
|
|
|
|
/* device structures */
|
|
static d_open_t adopen;
|
|
static d_strategy_t adstrategy;
|
|
static d_dump_t addump;
|
|
static struct cdevsw ad_cdevsw = {
|
|
/* open */ adopen,
|
|
/* close */ nullclose,
|
|
/* read */ physread,
|
|
/* write */ physwrite,
|
|
/* ioctl */ noioctl,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ adstrategy,
|
|
/* name */ "ad",
|
|
/* maj */ 116,
|
|
/* dump */ addump,
|
|
/* psize */ nopsize,
|
|
/* flags */ D_DISK,
|
|
/* bmaj */ 30
|
|
};
|
|
static struct cdevsw addisk_cdevsw;
|
|
static struct cdevsw fakewd_cdevsw = {
|
|
/* open */ adopen,
|
|
/* close */ nullclose,
|
|
/* read */ physread,
|
|
/* write */ physwrite,
|
|
/* ioctl */ noioctl,
|
|
/* poll */ nopoll,
|
|
/* mmap */ nommap,
|
|
/* strategy */ adstrategy,
|
|
/* name */ "wd",
|
|
/* maj */ 3,
|
|
/* dump */ addump,
|
|
/* psize */ nopsize,
|
|
/* flags */ D_DISK,
|
|
/* bmaj */ 0
|
|
};
|
|
static struct cdevsw fakewddisk_cdevsw;
|
|
|
|
/* prototypes */
|
|
static void ad_timeout(struct ad_request *);
|
|
static int32_t ad_version(u_int16_t);
|
|
|
|
/* internal vars */
|
|
static u_int32_t adp_lun_map = 0;
|
|
MALLOC_DEFINE(M_AD, "AD driver", "ATA disk driver");
|
|
|
|
/* defines */
|
|
#define AD_MAX_RETRIES 3
|
|
#define AD_PARAM ATA_PARAM(adp->controller, adp->unit)
|
|
|
|
void
|
|
ad_attach(struct ata_softc *scp, int32_t device)
|
|
{
|
|
struct ad_softc *adp;
|
|
dev_t dev;
|
|
int32_t secsperint;
|
|
|
|
|
|
if (!(adp = malloc(sizeof(struct ad_softc), M_AD, M_NOWAIT))) {
|
|
ata_printf(scp, device, "failed to allocate driver storage\n");
|
|
return;
|
|
}
|
|
bzero(adp, sizeof(struct ad_softc));
|
|
scp->dev_softc[ATA_DEV(device)] = adp;
|
|
adp->controller = scp;
|
|
adp->unit = device;
|
|
#ifdef ATA_STATIC_ID
|
|
adp->lun = (device_get_unit(scp->dev) << 1) + ATA_DEV(device);
|
|
#else
|
|
adp->lun = ata_get_lun(&adp_lun_map);
|
|
#endif
|
|
adp->heads = AD_PARAM->heads;
|
|
adp->sectors = AD_PARAM->sectors;
|
|
adp->total_secs = AD_PARAM->cylinders * adp->heads * adp->sectors;
|
|
if (AD_PARAM->cylinders == 16383 && adp->total_secs < AD_PARAM->lbasize)
|
|
adp->total_secs = AD_PARAM->lbasize;
|
|
|
|
if (AD_PARAM->atavalid & ATA_FLAG_54_58 && AD_PARAM->lbasize)
|
|
adp->flags |= AD_F_LBA_ENABLED;
|
|
|
|
/* use multiple sectors/interrupt if device supports it */
|
|
adp->transfersize = DEV_BSIZE;
|
|
secsperint = max(1, min(AD_PARAM->nsecperint, 16));
|
|
if (!ata_command(adp->controller, adp->unit, ATA_C_SET_MULTI,
|
|
0, 0, 0, secsperint, 0, ATA_WAIT_INTR) &&
|
|
ata_wait(adp->controller, adp->unit, ATA_S_READY) >= 0)
|
|
adp->transfersize *= secsperint;
|
|
|
|
/* enable read/write cacheing if not default on device */
|
|
if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
|
|
0, 0, 0, 0, ATA_C_F_ENAB_RCACHE, ATA_WAIT_INTR))
|
|
printf("ad%d: enabling readahead cache failed\n", adp->lun);
|
|
|
|
if (ata_command(adp->controller, adp->unit, ATA_C_SETFEATURES,
|
|
0, 0, 0, 0, ATA_C_F_ENAB_WCACHE, ATA_WAIT_INTR))
|
|
printf("ad%d: enabling write cache failed\n", adp->lun);
|
|
|
|
/* use DMA if drive & controller supports it */
|
|
ata_dmainit(adp->controller, adp->unit, ata_pmode(AD_PARAM),
|
|
ata_wmode(AD_PARAM), ata_umode(AD_PARAM));
|
|
|
|
/* use tagged queueing if supported (not yet) */
|
|
if ((adp->num_tags = (AD_PARAM->queuelen & 0x1f) + 1))
|
|
adp->flags |= AD_F_TAG_ENABLED;
|
|
|
|
if (bootverbose) {
|
|
printf("ad%d: <%.40s/%.8s> ATA-%d disk at ata%d as %s\n",
|
|
adp->lun, AD_PARAM->model, AD_PARAM->revision,
|
|
ad_version(AD_PARAM->versmajor), device_get_unit(scp->dev),
|
|
(adp->unit == ATA_MASTER) ? "master" : "slave");
|
|
|
|
printf("ad%d: %luMB (%u sectors), %u cyls, %u heads, %u S/T, %u B/S\n",
|
|
adp->lun, adp->total_secs / ((1024L * 1024L)/DEV_BSIZE),
|
|
adp->total_secs,
|
|
adp->total_secs / (adp->heads * adp->sectors),
|
|
adp->heads, adp->sectors, DEV_BSIZE);
|
|
|
|
printf("ad%d: %d secs/int, %d depth queue, %s\n",
|
|
adp->lun, adp->transfersize / DEV_BSIZE, adp->num_tags,
|
|
ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
|
|
|
|
printf("ad%d: piomode=%d dmamode=%d udmamode=%d cblid=%d\n",
|
|
adp->lun, ata_pmode(AD_PARAM), ata_wmode(AD_PARAM),
|
|
ata_umode(AD_PARAM), AD_PARAM->cblid);
|
|
|
|
}
|
|
else
|
|
printf("ad%d: %luMB <%.40s> [%d/%d/%d] at ata%d-%s using %s\n",
|
|
adp->lun, adp->total_secs / ((1024L * 1024L) / DEV_BSIZE),
|
|
AD_PARAM->model, adp->total_secs / (adp->heads * adp->sectors),
|
|
adp->heads, adp->sectors, device_get_unit(scp->dev),
|
|
(adp->unit == ATA_MASTER) ? "master" : "slave",
|
|
ata_mode2str(adp->controller->mode[ATA_DEV(adp->unit)]));
|
|
|
|
devstat_add_entry(&adp->stats, "ad", adp->lun, DEV_BSIZE,
|
|
DEVSTAT_NO_ORDERED_TAGS,
|
|
DEVSTAT_TYPE_DIRECT | DEVSTAT_TYPE_IF_IDE,
|
|
DEVSTAT_PRIORITY_DISK);
|
|
|
|
dev = disk_create(adp->lun, &adp->disk, 0, &ad_cdevsw, &addisk_cdevsw);
|
|
dev->si_drv1 = adp;
|
|
dev->si_iosize_max = 256 * DEV_BSIZE;
|
|
adp->dev1 = dev;
|
|
|
|
dev = disk_create(adp->lun, &adp->disk, 0, &fakewd_cdevsw,
|
|
&fakewddisk_cdevsw);
|
|
dev->si_drv1 = adp;
|
|
dev->si_iosize_max = 256 * DEV_BSIZE;
|
|
adp->dev2 = dev;
|
|
|
|
bufq_init(&adp->queue);
|
|
}
|
|
|
|
void
|
|
ad_detach(struct ad_softc *adp)
|
|
{
|
|
disk_invalidate(&adp->disk);
|
|
disk_destroy(adp->dev1);
|
|
disk_destroy(adp->dev2);
|
|
devstat_remove_entry(&adp->stats);
|
|
ata_free_lun(&adp_lun_map, adp->lun);
|
|
free(adp, M_AD);
|
|
}
|
|
|
|
static int
|
|
adopen(dev_t dev, int32_t flags, int32_t fmt, struct proc *p)
|
|
{
|
|
struct ad_softc *adp = dev->si_drv1;
|
|
struct disklabel *dl;
|
|
|
|
dl = &adp->disk.d_label;
|
|
bzero(dl, sizeof *dl);
|
|
dl->d_secsize = DEV_BSIZE;
|
|
dl->d_nsectors = adp->sectors;
|
|
dl->d_ntracks = adp->heads;
|
|
dl->d_ncylinders = adp->total_secs / (adp->heads * adp->sectors);
|
|
dl->d_secpercyl = adp->sectors * adp->heads;
|
|
dl->d_secperunit = adp->total_secs;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
adstrategy(struct buf *bp)
|
|
{
|
|
struct ad_softc *adp = bp->b_dev->si_drv1;
|
|
int32_t s;
|
|
|
|
/* if it's a null transfer, return immediatly. */
|
|
if (bp->b_bcount == 0) {
|
|
bp->b_resid = 0;
|
|
biodone(bp);
|
|
return;
|
|
}
|
|
|
|
s = splbio();
|
|
bufqdisksort(&adp->queue, bp);
|
|
ata_start(adp->controller);
|
|
splx(s);
|
|
}
|
|
|
|
int
|
|
addump(dev_t dev)
|
|
{
|
|
struct ad_softc *adp = dev->si_drv1;
|
|
struct ad_request request;
|
|
u_int count, blkno, secsize;
|
|
vm_offset_t addr = 0;
|
|
int error;
|
|
|
|
if ((error = disk_dumpcheck(dev, &count, &blkno, &secsize)))
|
|
return error;
|
|
|
|
if (!adp)
|
|
return ENXIO;
|
|
|
|
/* force PIO mode for dumps */
|
|
adp->controller->mode[ATA_DEV(adp->unit)] = ATA_PIO;
|
|
ata_reinit(adp->controller);
|
|
|
|
while (count > 0) {
|
|
DELAY(1000);
|
|
if (is_physical_memory(addr))
|
|
pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
|
|
trunc_page(addr), VM_PROT_READ, TRUE);
|
|
else
|
|
pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
|
|
trunc_page(0), VM_PROT_READ, TRUE);
|
|
|
|
bzero(&request, sizeof(struct ad_request));
|
|
request.device = adp;
|
|
request.blockaddr = blkno;
|
|
request.bytecount = PAGE_SIZE;
|
|
request.data = CADDR1;
|
|
|
|
while (request.bytecount > 0) {
|
|
ad_transfer(&request);
|
|
if (request.flags & ADR_F_ERROR)
|
|
return EIO;
|
|
request.donecount += request.currentsize;
|
|
request.bytecount -= request.currentsize;
|
|
DELAY(20);
|
|
}
|
|
|
|
if (addr % (1024 * 1024) == 0) {
|
|
#ifdef HW_WDOG
|
|
if (wdog_tickler)
|
|
(*wdog_tickler)();
|
|
#endif
|
|
printf("%ld ", (long)(count * DEV_BSIZE) / (1024 * 1024));
|
|
}
|
|
|
|
blkno += howmany(PAGE_SIZE, secsize);
|
|
count -= howmany(PAGE_SIZE, secsize);
|
|
addr += PAGE_SIZE;
|
|
if (cncheckc() != -1)
|
|
return EINTR;
|
|
}
|
|
|
|
if (ata_wait(adp->controller, adp->unit, ATA_S_READY | ATA_S_DSC) < 0)
|
|
printf("ad%d: timeout waiting for final ready\n", adp->lun);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
ad_start(struct ad_softc *adp)
|
|
{
|
|
struct buf *bp = bufq_first(&adp->queue);
|
|
struct ad_request *request;
|
|
|
|
if (!bp)
|
|
return;
|
|
|
|
if (!(request = malloc(sizeof(struct ad_request), M_AD, M_NOWAIT))) {
|
|
printf("ad%d: out of memory in start\n", adp->lun);
|
|
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_iocmd == BIO_READ) ? ADR_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);
|
|
}
|
|
|
|
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);
|
|
|
|
if (request->donecount == 0) {
|
|
|
|
/* start timeout for this transfer */
|
|
if (panicstr)
|
|
request->timeout_handle.callout = NULL;
|
|
else
|
|
request->timeout_handle =
|
|
timeout((timeout_t*)ad_timeout, request, 10 * hz);
|
|
|
|
/* setup transfer parameters */
|
|
count = howmany(request->bytecount, DEV_BSIZE);
|
|
if (count > 256) {
|
|
count = 256;
|
|
printf("ad%d: count %d size transfers not supported\n",
|
|
adp->lun, 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 &= ~ADR_F_DMA_USED;
|
|
if ((adp->controller->mode[ATA_DEV(adp->unit)] >= ATA_DMA) &&
|
|
!ata_dmasetup(adp->controller, adp->unit,
|
|
(void *)request->data, request->bytecount,
|
|
(request->flags & ADR_F_READ))) {
|
|
request->flags |= ADR_F_DMA_USED;
|
|
cmd = request->flags&ADR_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&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)) {
|
|
printf("ad%d: error executing command\n", adp->lun);
|
|
return;
|
|
}
|
|
|
|
/* if this is a DMA transfer, start it, return and wait for interrupt */
|
|
if (request->flags & ADR_F_DMA_USED) {
|
|
ata_dmastart(adp->controller);
|
|
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 & ADR_F_READ)
|
|
return;
|
|
|
|
/* ready to write PIO data ? */
|
|
if (ata_wait(adp->controller, adp->unit,
|
|
(ATA_S_READY | ATA_S_DSC | ATA_S_DRQ)) < 0)
|
|
printf("ad%d: timeout waiting for DRQ", adp->lun);
|
|
|
|
/* output the data */
|
|
if (adp->controller->flags & ATA_USE_16BIT)
|
|
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));
|
|
}
|
|
|
|
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 & ADR_F_DMA_USED)
|
|
dma_stat = ata_dmadone(adp->controller);
|
|
|
|
/* get drive status */
|
|
if (ata_wait(adp->controller, adp->unit, 0) < 0)
|
|
printf("ad%d: timeout waiting for status", adp->lun);
|
|
|
|
/* do we have a corrected soft error ? */
|
|
if (adp->controller->status & ATA_S_CORR)
|
|
printf("ad%d: soft error ECC corrected\n", adp->lun);
|
|
|
|
/* did any real errors happen ? */
|
|
if ((adp->controller->status & ATA_S_ERROR) ||
|
|
((request->flags & ADR_F_DMA_USED) && (dma_stat & ATA_BMSTAT_ERROR))) {
|
|
oops:
|
|
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 late", adp->lun);
|
|
goto oops;
|
|
}
|
|
|
|
/* 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->b_error = EIO;
|
|
request->bp->b_ioflags |= BIO_ERROR;
|
|
}
|
|
else {
|
|
request->bytecount -= request->currentsize;
|
|
request->donecount += request->currentsize;
|
|
if (request->bytecount > 0) {
|
|
ad_transfer(request);
|
|
return ATA_OP_CONTINUES;
|
|
}
|
|
}
|
|
|
|
request->bp->b_resid = request->bytecount;
|
|
devstat_end_transaction_buf(&adp->stats, request->bp);
|
|
biodone(request->bp);
|
|
|
|
/* disarm timeout for this transfer */
|
|
untimeout((timeout_t *)ad_timeout, request, request->timeout_handle);
|
|
|
|
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->b_error = EIO;
|
|
request->bp->b_ioflags |= BIO_ERROR;
|
|
devstat_end_transaction_buf(&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;
|
|
}
|