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8ea3ce2aac
freebsd-dev/sys/dev/ata/ata-all.c
Søren Schmidt 8ea3ce2aac Refine the detach/attach code. 
Proberly fail outstanding bio requests on devices that are detached.

This makes it possible to change between disk/cdrom/dvd/whathaveyou
in a notebook, just by suspending it, changing the device in the
bay (or what you model calls it), unsuspend and the ATA driver
will figure out what disappeared and properly fail those, and attach
any new devices found.
2001-03-14 12:05:44 +00:00

1111 lines
31 KiB
C
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/*-
* Copyright (c) 1998,1999,2000,2001 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 "pci.h"
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/disk.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/devicestat.h>
#include <sys/sysctl.h>
#include <machine/stdarg.h>
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#ifdef __alpha__
#include <machine/md_var.h>
#endif
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-disk.h>
#include <dev/ata/atapi-all.h>
/* prototypes */
static void ata_boot_attach(void);
static void ata_intr(void *);
static int ata_getparam(struct ata_softc *, int, u_int8_t);
static int ata_service(struct ata_softc *);
static char *active2str(int);
static void bswap(int8_t *, int);
static void btrim(int8_t *, int);
static void bpack(int8_t *, int8_t *, int);
/* global vars */
devclass_t ata_devclass;
/* local vars */
static struct intr_config_hook *ata_delayed_attach = NULL;
static char ata_conf[256];
static MALLOC_DEFINE(M_ATA, "ATA generic", "ATA driver generic layer");
/* misc defines */
#define MASTER 0
#define SLAVE 1
int
ata_probe(device_t dev)
{
struct ata_softc *scp;
int rid;
if (!dev)
return ENXIO;
scp = device_get_softc(dev);
if (!scp || scp->devices)
return ENXIO;
/* initialize the softc basics */
scp->active = ATA_IDLE;
scp->dev = dev;
rid = ATA_IOADDR_RID;
scp->r_io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
ATA_IOSIZE, RF_ACTIVE);
if (!scp->r_io)
goto failure;
rid = ATA_ALTADDR_RID;
scp->r_altio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
ATA_ALTIOSIZE, RF_ACTIVE);
if (!scp->r_altio)
goto failure;
rid = ATA_BMADDR_RID;
scp->r_bmio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0,
ATA_BMIOSIZE, RF_ACTIVE);
if (bootverbose)
ata_printf(scp, -1, "iobase=0x%04x altiobase=0x%04x bmaddr=0x%04x\n",
(int)rman_get_start(scp->r_io),
(int)rman_get_start(scp->r_altio),
(scp->r_bmio) ? (int)rman_get_start(scp->r_bmio) : 0);
ata_reset(scp);
TAILQ_INIT(&scp->ata_queue);
TAILQ_INIT(&scp->atapi_queue);
return 0;
failure:
if (scp->r_io)
bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, scp->r_io);
if (scp->r_altio)
bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID,scp->r_altio);
if (scp->r_bmio)
bus_release_resource(dev, SYS_RES_IOPORT, ATA_BMADDR_RID, scp->r_bmio);
if (bootverbose)
ata_printf(scp, -1, "probe allocation failed\n");
return ENXIO;
}
int
ata_attach(device_t dev)
{
struct ata_softc *scp;
int error, rid;
if (!dev)
return ENXIO;
scp = device_get_softc(dev);
if (!scp)
return ENXIO;
rid = ATA_IRQ_RID;
scp->r_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (!scp->r_irq) {
ata_printf(scp, -1, "unable to allocate interrupt\n");
return ENXIO;
}
if ((error = bus_setup_intr(dev, scp->r_irq, INTR_TYPE_BIO|INTR_ENTROPY,
ata_intr, scp, &scp->ih)))
return error;
/*
* do not attach devices if we are in early boot, this is done later
* when interrupts are enabled by a hook into the boot process.
* otherwise attach what the probe has found in scp->devices.
*/
if (!ata_delayed_attach) {
if (scp->devices & ATA_ATA_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATA_IDENTIFY))
scp->devices &= ~ATA_ATA_SLAVE;
if (scp->devices & ATA_ATAPI_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATAPI_IDENTIFY))
scp->devices &= ~ATA_ATAPI_SLAVE;
if (scp->devices & ATA_ATA_MASTER)
if (ata_getparam(scp, ATA_MASTER, ATA_C_ATA_IDENTIFY))
scp->devices &= ~ATA_ATA_MASTER;
if (scp->devices & ATA_ATAPI_MASTER)
if (ata_getparam(scp, ATA_MASTER,ATA_C_ATAPI_IDENTIFY))
scp->devices &= ~ATA_ATAPI_MASTER;
#ifdef DEV_ATADISK
if (scp->devices & ATA_ATA_MASTER)
ad_attach(scp, ATA_MASTER);
if (scp->devices & ATA_ATA_SLAVE)
ad_attach(scp, ATA_SLAVE);
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
if (scp->devices & ATA_ATAPI_MASTER)
atapi_attach(scp, ATA_MASTER);
if (scp->devices & ATA_ATAPI_SLAVE)
atapi_attach(scp, ATA_SLAVE);
#endif
}
return 0;
}
int
ata_detach(device_t dev)
{
struct ata_softc *scp;
int s;
if (!dev)
return ENXIO;
scp = device_get_softc(dev);
if (!scp || !scp->devices)
return ENXIO;
/* make sure channel is not busy SOS XXX */
s = splbio();
while (!atomic_cmpset_int(&scp->active, ATA_IDLE, ATA_ACTIVE))
tsleep((caddr_t)&s, PRIBIO, "atachm", hz/4);
splx(s);
/* disable interrupts on devices */
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_IDS | ATA_A_4BIT);
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_IDS | ATA_A_4BIT);
#ifdef DEV_ATADISK
if (scp->devices & ATA_ATA_MASTER && scp->dev_softc[MASTER])
ad_detach(scp->dev_softc[MASTER]);
if (scp->devices & ATA_ATA_SLAVE && scp->dev_softc[SLAVE])
ad_detach(scp->dev_softc[SLAVE]);
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
if (scp->devices & ATA_ATAPI_MASTER && scp->dev_softc[MASTER])
atapi_detach(scp->dev_softc[MASTER]);
if (scp->devices & ATA_ATAPI_SLAVE && scp->dev_softc[SLAVE])
atapi_detach(scp->dev_softc[SLAVE]);
#endif
if (scp->dev_param[MASTER]) {
free(scp->dev_param[MASTER], M_ATA);
scp->dev_param[MASTER] = NULL;
}
if (scp->dev_param[SLAVE]) {
free(scp->dev_param[SLAVE], M_ATA);
scp->dev_param[SLAVE] = NULL;
}
scp->dev_softc[MASTER] = NULL;
scp->dev_softc[SLAVE] = NULL;
scp->mode[MASTER] = ATA_PIO;
scp->mode[SLAVE] = ATA_PIO;
scp->devices = 0;
bus_teardown_intr(dev, scp->r_irq, scp->ih);
bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, scp->r_irq);
if (scp->r_bmio)
bus_release_resource(dev, SYS_RES_IOPORT, ATA_BMADDR_RID, scp->r_bmio);
bus_release_resource(dev, SYS_RES_IOPORT, ATA_ALTADDR_RID, scp->r_altio);
bus_release_resource(dev, SYS_RES_IOPORT, ATA_IOADDR_RID, scp->r_io);
scp->active = ATA_IDLE;
return 0;
}
int
ata_resume(device_t dev)
{
struct ata_softc *scp = device_get_softc(dev);
ata_reinit(scp);
return 0;
}
static int
ata_getparam(struct ata_softc *scp, int device, u_int8_t command)
{
struct ata_params *ata_parm;
int8_t buffer[DEV_BSIZE];
int retry = 0;
/* select drive */
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | device);
DELAY(1);
/* enable interrupt */
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_4BIT);
DELAY(1);
/* apparently some devices needs this repeated */
do {
if (ata_command(scp, device, command, 0, 0, 0, 0, 0, ATA_WAIT_INTR)) {
ata_printf(scp, device, "identify failed\n");
return -1;
}
if (retry++ > 4) {
ata_printf(scp, device, "identify retries exceeded\n");
return -1;
}
} while (ata_wait(scp, device,
((command == ATA_C_ATAPI_IDENTIFY) ?
ATA_S_DRQ : (ATA_S_READY | ATA_S_DSC | ATA_S_DRQ))));
ATA_INSW(scp->r_io, ATA_DATA, (int16_t *)buffer,
sizeof(buffer)/sizeof(int16_t));
ata_parm = malloc(sizeof(struct ata_params), M_ATA, M_NOWAIT);
if (!ata_parm) {
ata_printf(scp, device, "malloc for identify data failed\n");
return -1;
}
bcopy(buffer, ata_parm, sizeof(struct ata_params));
if (command == ATA_C_ATA_IDENTIFY ||
!((ata_parm->model[0] == 'N' && ata_parm->model[1] == 'E') ||
(ata_parm->model[0] == 'F' && ata_parm->model[1] == 'X')))
bswap(ata_parm->model, sizeof(ata_parm->model));
btrim(ata_parm->model, sizeof(ata_parm->model));
bpack(ata_parm->model, ata_parm->model, sizeof(ata_parm->model));
bswap(ata_parm->revision, sizeof(ata_parm->revision));
btrim(ata_parm->revision, sizeof(ata_parm->revision));
bpack(ata_parm->revision, ata_parm->revision, sizeof(ata_parm->revision));
scp->dev_param[ATA_DEV(device)] = ata_parm;
return 0;
}
static void
ata_boot_attach(void)
{
struct ata_softc *scp;
int ctlr;
/*
* run through all ata devices and look for real ATA & ATAPI devices
* using the hints we found in the early probe, this avoids some of
* the delays probing of non-exsistent devices can cause.
*/
for (ctlr=0; ctlr<devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(scp = devclass_get_softc(ata_devclass, ctlr)))
continue;
if (scp->devices & ATA_ATA_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATA_IDENTIFY))
scp->devices &= ~ATA_ATA_SLAVE;
if (scp->devices & ATA_ATAPI_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATAPI_IDENTIFY))
scp->devices &= ~ATA_ATAPI_SLAVE;
if (scp->devices & ATA_ATA_MASTER)
if (ata_getparam(scp, ATA_MASTER, ATA_C_ATA_IDENTIFY))
scp->devices &= ~ATA_ATA_MASTER;
if (scp->devices & ATA_ATAPI_MASTER)
if (ata_getparam(scp, ATA_MASTER, ATA_C_ATAPI_IDENTIFY))
scp->devices &= ~ATA_ATAPI_MASTER;
}
#ifdef DEV_ATADISK
/* now we know whats there, do the real attach, first the ATA disks */
for (ctlr=0; ctlr<devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(scp = devclass_get_softc(ata_devclass, ctlr)))
continue;
if (scp->devices & ATA_ATA_MASTER)
ad_attach(scp, ATA_MASTER);
if (scp->devices & ATA_ATA_SLAVE)
ad_attach(scp, ATA_SLAVE);
}
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
/* then the atapi devices */
for (ctlr=0; ctlr<devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(scp = devclass_get_softc(ata_devclass, ctlr)))
continue;
if (scp->devices & ATA_ATAPI_MASTER)
atapi_attach(scp, ATA_MASTER);
if (scp->devices & ATA_ATAPI_SLAVE)
atapi_attach(scp, ATA_SLAVE);
}
#endif
if (ata_delayed_attach) {
config_intrhook_disestablish(ata_delayed_attach);
free(ata_delayed_attach, M_ATA);
ata_delayed_attach = NULL;
}
}
static void
ata_intr(void *data)
{
struct ata_softc *scp = (struct ata_softc *)data;
/*
* on PCI systems we might share an interrupt line with another
* device or our twin ATA channel, so call scp->intr_func to figure
* out if it is really an interrupt we should process here
*/
if (scp->intr_func && scp->intr_func(scp))
return;
/* if drive is busy it didn't interrupt */
if (ATA_INB(scp->r_altio, ATA_ALTSTAT) & ATA_S_BUSY)
return;
/* clear interrupt and get status */
scp->status = ATA_INB(scp->r_io, ATA_STATUS);
if (scp->status & ATA_S_ERROR)
scp->error = ATA_INB(scp->r_io, ATA_ERROR);
/* find & call the responsible driver to process this interrupt */
switch (scp->active) {
#ifdef DEV_ATADISK
case ATA_ACTIVE_ATA:
if (!scp->running || ad_interrupt(scp->running) == ATA_OP_CONTINUES)
return;
break;
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
case ATA_ACTIVE_ATAPI:
if (!scp->running || atapi_interrupt(scp->running) == ATA_OP_CONTINUES)
return;
break;
#endif
case ATA_WAIT_INTR:
case ATA_WAIT_INTR | ATA_REINITING:
wakeup((caddr_t)scp);
break;
case ATA_WAIT_READY:
case ATA_WAIT_READY | ATA_REINITING:
break;
case ATA_IDLE:
if (scp->flags & ATA_QUEUED) {
scp->active = ATA_ACTIVE; /* XXX */
if (ata_service(scp) == ATA_OP_CONTINUES)
return;
}
/* FALLTHROUGH */
default:
#ifdef ATA_DEBUG
{
static int intr_count = 0;
if (intr_count++ < 10)
ata_printf(scp, -1, "unwanted interrupt %d status = %02x\n",
intr_count, scp->status);
}
#endif
}
scp->active &= ATA_REINITING;
if (scp->active & ATA_REINITING)
return;
scp->running = NULL;
ata_start(scp);
return;
}
void
ata_start(struct ata_softc *scp)
{
#ifdef DEV_ATADISK
struct ad_request *ad_request;
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
struct atapi_request *atapi_request;
#endif
if (!atomic_cmpset_int(&scp->active, ATA_IDLE, ATA_ACTIVE))
return;
#ifdef DEV_ATADISK
/* find & call the responsible driver if anything on the ATA queue */
if (TAILQ_EMPTY(&scp->ata_queue)) {
if (scp->devices & (ATA_ATA_MASTER) && scp->dev_softc[MASTER])
ad_start((struct ad_softc *)scp->dev_softc[MASTER]);
if (scp->devices & (ATA_ATA_SLAVE) && scp->dev_softc[SLAVE])
ad_start((struct ad_softc *)scp->dev_softc[SLAVE]);
}
if ((ad_request = TAILQ_FIRST(&scp->ata_queue))) {
TAILQ_REMOVE(&scp->ata_queue, ad_request, chain);
scp->active = ATA_ACTIVE_ATA;
scp->running = ad_request;
if (ad_transfer(ad_request) == ATA_OP_CONTINUES)
return;
}
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
/* find & call the responsible driver if anything on the ATAPI queue */
if (TAILQ_EMPTY(&scp->atapi_queue)) {
if (scp->devices & (ATA_ATAPI_MASTER) && scp->dev_softc[MASTER])
atapi_start((struct atapi_softc *)scp->dev_softc[MASTER]);
if (scp->devices & (ATA_ATAPI_SLAVE) && scp->dev_softc[SLAVE])
atapi_start((struct atapi_softc *)scp->dev_softc[SLAVE]);
}
if ((atapi_request = TAILQ_FIRST(&scp->atapi_queue))) {
TAILQ_REMOVE(&scp->atapi_queue, atapi_request, chain);
scp->active = ATA_ACTIVE_ATAPI;
scp->running = atapi_request;
atapi_transfer(atapi_request);
return;
}
#endif
scp->active = ATA_IDLE;
}
void
ata_reset(struct ata_softc *scp)
{
u_int8_t lsb, msb, ostat0, ostat1;
u_int8_t stat0 = ATA_S_BUSY, stat1 = ATA_S_BUSY;
int mask = 0, timeout;
/* do we have any signs of ATA/ATAPI HW being present ? */
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(1);
ostat0 = ATA_INB(scp->r_io, ATA_STATUS);
if ((ostat0 & 0xf8) != 0xf8 && ostat0 != 0xa5)
mask |= 0x01;
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
DELAY(1);
ostat1 = ATA_INB(scp->r_io, ATA_STATUS);
if ((ostat1 & 0xf8) != 0xf8 && ostat1 != 0xa5)
mask |= 0x02;
scp->devices = 0;
if (!mask)
return;
/* in some setups we dont want to test for a slave */
if (scp->flags & ATA_NO_SLAVE)
mask &= ~0x02;
if (bootverbose)
ata_printf(scp, -1, "mask=%02x ostat0=%02x ostat2=%02x\n",
mask, ostat0, ostat1);
/* reset channel */
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_IDS | ATA_A_RESET);
DELAY(10000);
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_IDS);
DELAY(100000);
ATA_INB(scp->r_io, ATA_ERROR);
/* wait for BUSY to go inactive */
for (timeout = 0; timeout < 310000; timeout++) {
if (stat0 & ATA_S_BUSY) {
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(10);
stat0 = ATA_INB(scp->r_io, ATA_STATUS);
if (!(stat0 & ATA_S_BUSY)) {
/* check for ATAPI signature while its still there */
lsb = ATA_INB(scp->r_io, ATA_CYL_LSB);
msb = ATA_INB(scp->r_io, ATA_CYL_MSB);
if (bootverbose)
ata_printf(scp, ATA_MASTER,
"ATAPI probe %02x %02x\n", lsb, msb);
if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB)
scp->devices |= ATA_ATAPI_MASTER;
}
}
if (stat1 & ATA_S_BUSY) {
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
DELAY(10);
stat1 = ATA_INB(scp->r_io, ATA_STATUS);
if (!(stat1 & ATA_S_BUSY)) {
/* check for ATAPI signature while its still there */
lsb = ATA_INB(scp->r_io, ATA_CYL_LSB);
msb = ATA_INB(scp->r_io, ATA_CYL_MSB);
if (bootverbose)
ata_printf(scp, ATA_SLAVE,
"ATAPI probe %02x %02x\n", lsb, msb);
if (lsb == ATAPI_MAGIC_LSB && msb == ATAPI_MAGIC_MSB)
scp->devices |= ATA_ATAPI_SLAVE;
}
}
if (mask == 0x01) /* wait for master only */
if (!(stat0 & ATA_S_BUSY))
break;
if (mask == 0x02) /* wait for slave only */
if (!(stat1 & ATA_S_BUSY))
break;
if (mask == 0x03) /* wait for both master & slave */
if (!(stat0 & ATA_S_BUSY) && !(stat1 & ATA_S_BUSY))
break;
DELAY(100);
}
DELAY(10);
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_4BIT);
if (stat0 & ATA_S_BUSY)
mask &= ~0x01;
if (stat1 & ATA_S_BUSY)
mask &= ~0x02;
if (bootverbose)
ata_printf(scp, -1, "mask=%02x stat0=%02x stat1=%02x\n",
mask, stat0, stat1);
if (!mask)
return;
if (mask & 0x01 && ostat0 != 0x00 && !(scp->devices & ATA_ATAPI_MASTER)) {
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(10);
ATA_OUTB(scp->r_io, ATA_ERROR, 0x58);
ATA_OUTB(scp->r_io, ATA_CYL_LSB, 0xa5);
lsb = ATA_INB(scp->r_io, ATA_ERROR);
msb = ATA_INB(scp->r_io, ATA_CYL_LSB);
if (bootverbose)
ata_printf(scp, ATA_MASTER, "ATA probe %02x %02x\n", lsb, msb);
if (lsb != 0x58 && msb == 0xa5)
scp->devices |= ATA_ATA_MASTER;
}
if (mask & 0x02 && ostat1 != 0x00 && !(scp->devices & ATA_ATAPI_SLAVE)) {
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
DELAY(10);
ATA_OUTB(scp->r_io, ATA_ERROR, 0x58);
ATA_OUTB(scp->r_io, ATA_CYL_LSB, 0xa5);
lsb = ATA_INB(scp->r_io, ATA_ERROR);
msb = ATA_INB(scp->r_io, ATA_CYL_LSB);
if (bootverbose)
ata_printf(scp, ATA_SLAVE, "ATA probe %02x %02x\n", lsb, msb);
if (lsb != 0x58 && msb == 0xa5)
scp->devices |= ATA_ATA_SLAVE;
}
if (bootverbose)
ata_printf(scp, -1, "devices=%02x\n", scp->devices);
}
int
ata_reinit(struct ata_softc *scp)
{
int devices, misdev, newdev;
scp->active = ATA_REINITING;
scp->running = NULL;
devices = scp->devices;
ata_printf(scp, -1, "resetting devices .. ");
ata_reset(scp);
if ((misdev = devices & ~scp->devices)) {
printf("\ndevice(s) disappeared! 0x%02x\n", misdev);
#ifdef DEV_ATADISK
if (misdev & ATA_ATA_MASTER && scp->dev_softc[MASTER])
ad_detach(scp->dev_softc[MASTER]);
if (misdev & ATA_ATA_SLAVE && scp->dev_softc[SLAVE])
ad_detach(scp->dev_softc[SLAVE]);
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
if (misdev & ATA_ATAPI_MASTER && scp->dev_softc[MASTER])
atapi_detach(scp->dev_softc[MASTER]);
if (misdev & ATA_ATAPI_SLAVE && scp->dev_softc[SLAVE])
atapi_detach(scp->dev_softc[SLAVE]);
#endif
if (misdev & ATA_ATA_MASTER || misdev & ATA_ATAPI_MASTER) {
free(scp->dev_param[MASTER], M_ATA);
scp->dev_param[MASTER] = NULL;
}
if (misdev & ATA_ATA_SLAVE || misdev & ATA_ATAPI_SLAVE) {
free(scp->dev_param[SLAVE], M_ATA);
scp->dev_param[SLAVE] = NULL;
}
}
if ((newdev = ~devices & scp->devices)) {
printf("\ndevice(s) appeared! 0x%02x\n", newdev);
if (newdev & ATA_ATA_MASTER)
if (ata_getparam(scp, ATA_MASTER, ATA_C_ATA_IDENTIFY))
newdev &= ~ATA_ATA_MASTER;
if (newdev & ATA_ATA_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATA_IDENTIFY))
newdev &= ~ATA_ATA_SLAVE;
if (newdev & ATA_ATAPI_MASTER)
if (ata_getparam(scp, ATA_MASTER, ATA_C_ATAPI_IDENTIFY))
newdev &= ~ATA_ATAPI_MASTER;
if (newdev & ATA_ATAPI_SLAVE)
if (ata_getparam(scp, ATA_SLAVE, ATA_C_ATAPI_IDENTIFY))
newdev &= ~ATA_ATAPI_SLAVE;
}
scp->active = ATA_IDLE;
#ifdef DEV_ATADISK
if (newdev & ATA_ATA_MASTER && !scp->dev_softc[MASTER])
ad_attach(scp, ATA_MASTER);
else if (scp->devices & ATA_ATA_MASTER && scp->dev_softc[MASTER])
ad_reinit((struct ad_softc *)scp->dev_softc[MASTER]);
if (newdev & ATA_ATA_SLAVE && !scp->dev_softc[SLAVE])
ad_attach(scp, ATA_SLAVE);
else if (scp->devices & (ATA_ATA_SLAVE) && scp->dev_softc[SLAVE])
ad_reinit((struct ad_softc *)scp->dev_softc[SLAVE]);
#endif
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
if (newdev & ATA_ATAPI_MASTER && !scp->dev_softc[MASTER])
atapi_attach(scp, ATA_MASTER);
else if (scp->devices & (ATA_ATAPI_MASTER) && scp->dev_softc[MASTER])
atapi_reinit((struct atapi_softc *)scp->dev_softc[MASTER]);
if (newdev & ATA_ATAPI_SLAVE && !scp->dev_softc[SLAVE])
atapi_attach(scp, ATA_SLAVE);
else if (scp->devices & (ATA_ATAPI_SLAVE) && scp->dev_softc[SLAVE])
atapi_reinit((struct atapi_softc *)scp->dev_softc[SLAVE]);
#endif
printf("done\n");
ata_start(scp);
return 0;
}
static int
ata_service(struct ata_softc *scp)
{
/* do we have a SERVICE request from the drive ? */
if ((scp->status & (ATA_S_SERVICE|ATA_S_ERROR|ATA_S_DRQ)) == ATA_S_SERVICE){
ATA_OUTB(scp->r_bmio, ATA_BMSTAT_PORT,
ata_dmastatus(scp) | ATA_BMSTAT_INTERRUPT);
#ifdef DEV_ATADISK
if ((ATA_INB(scp->r_io, ATA_DRIVE) & ATA_SLAVE) == ATA_MASTER) {
if ((scp->devices & ATA_ATA_MASTER) && scp->dev_softc[MASTER])
return ad_service((struct ad_softc *)scp->dev_softc[MASTER], 0);
}
else {
if ((scp->devices & ATA_ATA_SLAVE) && scp->dev_softc[SLAVE])
return ad_service((struct ad_softc *)scp->dev_softc[SLAVE], 0);
}
#endif
}
return ATA_OP_FINISHED;
}
int
ata_wait(struct ata_softc *scp, int device, u_int8_t mask)
{
int timeout = 0;
DELAY(1);
while (timeout < 5000000) { /* timeout 5 secs */
scp->status = ATA_INB(scp->r_io, ATA_STATUS);
/* if drive fails status, reselect the drive just to be sure */
if (scp->status == 0xff) {
ata_printf(scp, device, "no status, reselecting device\n");
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | device);
DELAY(1);
scp->status = ATA_INB(scp->r_io, ATA_STATUS);
}
/* are we done ? */
if (!(scp->status & ATA_S_BUSY))
break;
if (timeout > 1000) {
timeout += 1000;
DELAY(1000);
}
else {
timeout += 10;
DELAY(10);
}
}
if (scp->status & ATA_S_ERROR)
scp->error = ATA_INB(scp->r_io, ATA_ERROR);
if (timeout >= 5000000)
return -1;
if (!mask)
return (scp->status & ATA_S_ERROR);
/* Wait 50 msec for bits wanted. */
timeout = 5000;
while (timeout--) {
scp->status = ATA_INB(scp->r_io, ATA_STATUS);
if ((scp->status & mask) == mask) {
if (scp->status & ATA_S_ERROR)
scp->error = ATA_INB(scp->r_io, ATA_ERROR);
return (scp->status & ATA_S_ERROR);
}
DELAY (10);
}
return -1;
}
int
ata_command(struct ata_softc *scp, int device, u_int8_t command,
u_int16_t cylinder, u_int8_t head, u_int8_t sector,
u_int8_t count, u_int8_t feature, int flags)
{
int error = 0;
#ifdef ATA_DEBUG
ata_printf(scp, device, "ata_command: addr=%04x, cmd=%02x, "
"c=%d, h=%d, s=%d, count=%d, feature=%d, flags=%02x\n",
rman_get_start(scp->r_io), command, cylinder, head, sector,
count, feature, flags);
#endif
/* disable interrupt from device */
if (scp->flags & ATA_QUEUED)
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_IDS | ATA_A_4BIT);
/* select device */
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | device);
/* ready to issue command ? */
if (ata_wait(scp, device, 0) < 0) {
ata_printf(scp, device,
"timeout waiting to give command=%02x s=%02x e=%02x\n",
command, scp->status, scp->error);
return -1;
}
ATA_OUTB(scp->r_io, ATA_FEATURE, feature);
ATA_OUTB(scp->r_io, ATA_COUNT, count);
ATA_OUTB(scp->r_io, ATA_SECTOR, sector);
ATA_OUTB(scp->r_io, ATA_CYL_MSB, cylinder >> 8);
ATA_OUTB(scp->r_io, ATA_CYL_LSB, cylinder);
ATA_OUTB(scp->r_io, ATA_DRIVE, ATA_D_IBM | device | head);
switch (flags) {
case ATA_WAIT_INTR:
scp->active |= ATA_WAIT_INTR;
asleep((caddr_t)scp, PRIBIO, "atacmd", 10 * hz);
ATA_OUTB(scp->r_io, ATA_CMD, command);
/* enable interrupt */
if (scp->flags & ATA_QUEUED)
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_4BIT);
if (await(PRIBIO, 10 * hz)) {
ata_printf(scp, device, "ata_command: timeout waiting for intr\n");
scp->active &= ~ATA_WAIT_INTR;
error = -1;
}
break;
case ATA_WAIT_READY:
scp->active |= ATA_WAIT_READY;
ATA_OUTB(scp->r_io, ATA_CMD, command);
if (ata_wait(scp, device, ATA_S_READY) < 0) {
ata_printf(scp, device,
"timeout waiting for command=%02x s=%02x e=%02x\n",
command, scp->status, scp->error);
error = -1;
}
scp->active &= ~ATA_WAIT_READY;
break;
case ATA_IMMEDIATE:
ATA_OUTB(scp->r_io, ATA_CMD, command);
break;
default:
ata_printf(scp, device, "DANGER: illegal interrupt flag=%s\n",
active2str(flags));
}
/* enable interrupt */
if (scp->flags & ATA_QUEUED)
ATA_OUTB(scp->r_altio, ATA_ALTSTAT, ATA_A_4BIT);
return error;
}
int
ata_get_lun(u_int32_t *map)
{
int lun = ffs(~*map) - 1;
*map |= (1 << lun);
return lun;
}
int
ata_test_lun(u_int32_t *map, int lun)
{
return (*map & (1 << lun));
}
void
ata_free_lun(u_int32_t *map, int lun)
{
*map &= ~(1 << lun);
}
int
ata_printf(struct ata_softc *scp, int device, const char * fmt, ...)
{
va_list ap;
int ret;
if (device == -1)
ret = printf("ata%d: ", device_get_unit(scp->dev));
else
ret = printf("ata%d-%s: ", device_get_unit(scp->dev),
(device == ATA_MASTER) ? "master" : "slave");
va_start(ap, fmt);
ret += vprintf(fmt, ap);
va_end(ap);
return ret;
}
char *
ata_mode2str(int mode)
{
switch (mode) {
case ATA_PIO: return "BIOSPIO";
case ATA_PIO0: return "PIO0";
case ATA_PIO1: return "PIO1";
case ATA_PIO2: return "PIO2";
case ATA_PIO3: return "PIO3";
case ATA_PIO4: return "PIO4";
case ATA_WDMA2: return "WDMA2";
case ATA_UDMA2: return "UDMA33";
case ATA_UDMA4: return "UDMA66";
case ATA_UDMA5: return "UDMA100";
case ATA_DMA: return "BIOSDMA";
default: return "???";
}
}
int
ata_pio2mode(int pio)
{
switch (pio) {
default:
case 0: return ATA_PIO0;
case 1: return ATA_PIO1;
case 2: return ATA_PIO2;
case 3: return ATA_PIO3;
case 4: return ATA_PIO4;
}
}
int
ata_pmode(struct ata_params *ap)
{
if (ap->atavalid & ATA_FLAG_64_70) {
if (ap->apiomodes & 2)
return 4;
if (ap->apiomodes & 1)
return 3;
}
if (ap->opiomode == 2)
return 2;
if (ap->opiomode == 1)
return 1;
if (ap->opiomode == 0)
return 0;
return -1;
}
int
ata_wmode(struct ata_params *ap)
{
if (ap->wdmamodes & 4)
return 2;
if (ap->wdmamodes & 2)
return 1;
if (ap->wdmamodes & 1)
return 0;
return -1;
}
int
ata_umode(struct ata_params *ap)
{
if (ap->atavalid & ATA_FLAG_88) {
if (ap->udmamodes & 0x20)
return 5;
if (ap->udmamodes & 0x10)
return 4;
if (ap->udmamodes & 0x08)
return 3;
if (ap->udmamodes & 0x04)
return 2;
if (ap->udmamodes & 0x02)
return 1;
if (ap->udmamodes & 0x01)
return 0;
}
return -1;
}
static char *
active2str(int active)
{
static char buf[8];
switch (active) {
case ATA_IDLE:
return("ATA_IDLE");
case ATA_IMMEDIATE:
return("ATA_IMMEDIATE");
case ATA_WAIT_INTR:
return("ATA_WAIT_INTR");
case ATA_WAIT_READY:
return("ATA_WAIT_READY");
case ATA_ACTIVE:
return("ATA_ACTIVE");
case ATA_ACTIVE_ATA:
return("ATA_ACTIVE_ATA");
case ATA_ACTIVE_ATAPI:
return("ATA_ACTIVE_ATAPI");
case ATA_REINITING:
return("ATA_REINITING");
default:
sprintf(buf, "0x%02x", active);
return buf;
}
}
static void
bswap(int8_t *buf, int len)
{
u_int16_t *ptr = (u_int16_t*)(buf + len);
while (--ptr >= (u_int16_t*)buf)
*ptr = ntohs(*ptr);
}
static void
btrim(int8_t *buf, int len)
{
int8_t *ptr;
for (ptr = buf; ptr < buf+len; ++ptr)
if (!*ptr)
*ptr = ' ';
for (ptr = buf + len - 1; ptr >= buf && *ptr == ' '; --ptr)
*ptr = 0;
}
static void
bpack(int8_t *src, int8_t *dst, int len)
{
int i, j, blank;
for (i = j = blank = 0 ; i < len; i++) {
if (blank && src[i] == ' ') continue;
if (blank && src[i] != ' ') {
dst[j++] = src[i];
blank = 0;
continue;
}
if (src[i] == ' ') {
blank = 1;
if (i == 0)
continue;
}
dst[j++] = src[i];
}
if (j < len)
dst[j] = 0x00;
}
static void
ata_change_mode(struct ata_softc *scp, int device, int mode)
{
int s = splbio();
while (!atomic_cmpset_int(&scp->active, ATA_IDLE, ATA_ACTIVE))
tsleep((caddr_t)&s, PRIBIO, "atachm", hz/4);
ata_dmainit(scp, device, ata_pmode(ATA_PARAM(scp, device)),
mode < ATA_DMA ? -1 : ata_wmode(ATA_PARAM(scp, device)),
mode < ATA_DMA ? -1 : ata_umode(ATA_PARAM(scp, device)));
scp->active = ATA_IDLE;
ata_start(scp);
splx(s);
}
static int
sysctl_hw_ata(SYSCTL_HANDLER_ARGS)
{
struct ata_softc *scp;
int ctlr, error, i;
/* readout internal state */
bzero(ata_conf, sizeof(ata_conf));
for (ctlr=0; ctlr<devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(scp = devclass_get_softc(ata_devclass, ctlr)))
continue;
for (i = 0; i < 2; i++) {
if (!scp->dev_softc[i])
strcat(ata_conf, "---,");
else if (scp->mode[i] >= ATA_DMA)
strcat(ata_conf, "dma,");
else
strcat(ata_conf, "pio,");
}
}
error = sysctl_handle_string(oidp, ata_conf, sizeof(ata_conf), req);
if (error == 0 && req->newptr != NULL) {
char *ptr = ata_conf;
/* update internal state */
i = 0;
while (*ptr) {
if (!strncmp(ptr, "pio", 3) || !strncmp(ptr, "PIO", 3)) {
if ((scp = devclass_get_softc(ata_devclass, i >> 1)) &&
scp->dev_softc[i & 1] && scp->mode[i & 1] >= ATA_DMA)
ata_change_mode(scp, (i & 1)?ATA_SLAVE:ATA_MASTER, ATA_PIO);
}
else if (!strncmp(ptr, "dma", 3) || !strncmp(ptr, "DMA", 3)) {
if ((scp = devclass_get_softc(ata_devclass, i >> 1)) &&
scp->dev_softc[i & 1] && scp->mode[i & 1] < ATA_DMA)
ata_change_mode(scp, (i & 1)?ATA_SLAVE:ATA_MASTER, ATA_DMA);
}
else if (strncmp(ptr, "---", 3))
break;
ptr+=3;
if (*ptr++ != ',' ||
++i > (devclass_get_maxunit(ata_devclass) << 1))
break;
}
}
return error;
}
SYSCTL_PROC(_hw, OID_AUTO, atamodes, CTLTYPE_STRING | CTLFLAG_RW,
0, sizeof(ata_conf), sysctl_hw_ata, "A", "");
static void
ata_init(void)
{
/* register boot attach to be run when interrupts are enabled */
if (!(ata_delayed_attach = (struct intr_config_hook *)
malloc(sizeof(struct intr_config_hook),
M_TEMP, M_NOWAIT | M_ZERO))) {
printf("ata: malloc of delayed attach hook failed\n");
return;
}
ata_delayed_attach->ich_func = (void*)ata_boot_attach;
if (config_intrhook_establish(ata_delayed_attach) != 0) {
printf("ata: config_intrhook_establish failed\n");
free(ata_delayed_attach, M_TEMP);
}
}
SYSINIT(atadev, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL)
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