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freebsd-skq/sys/dev/ata/ata-all.c
sos f16cfad959 Overhaul to minimize stack usage, in some places >2K was used 
on the stack *blush*...
2001-09-20 15:25:36 +00:00

1321 lines
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/*-
* Copyright (c) 1998,1999,2000,2001 Søren Schmidt <sos@FreeBSD.org>
* 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/ata.h>
#include <sys/kernel.h>
#include <sys/conf.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>
/* device structures */
static d_ioctl_t ataioctl;
static struct cdevsw ata_cdevsw = {
/* open */ nullopen,
/* close */ nullclose,
/* read */ noread,
/* write */ nowrite,
/* ioctl */ ataioctl,
/* poll */ nopoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "ata",
/* maj */ 159,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ 0,
};
/* 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);
static void ata_change_mode(struct ata_softc *, int, int);
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters");
/* global vars */
devclass_t ata_devclass;
/* local vars */
static struct intr_config_hook *ata_delayed_attach = NULL;
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)
return ENXIO;
if (scp->r_io || scp->r_altio || scp->r_irq)
return EEXIST;
/* 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_CONTROL))
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], 1);
if (scp->devices & ATA_ATA_SLAVE && scp->dev_softc[SLAVE])
ad_detach(scp->dev_softc[SLAVE], 1);
#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->r_io = NULL;
scp->r_altio = NULL;
scp->r_bmio = NULL;
scp->r_irq = NULL;
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
ataioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *td)
{
struct ata_cmd *iocmd = (struct ata_cmd *)addr;
device_t device;
int error;
if (cmd != IOCATA)
return ENOTTY;
if (iocmd->channel >= devclass_get_maxunit(ata_devclass))
return ENXIO;
if (!(device = devclass_get_device(ata_devclass, iocmd->channel)))
return ENODEV;
switch (iocmd->cmd) {
case ATAATTACH: {
/* should enable channel HW on controller that can SOS XXX */
error = ata_probe(device);
if (!error)
error = ata_attach(device);
return error;
}
case ATADETACH: {
error = ata_detach(device);
/* should disable channel HW on controller that can SOS XXX */
return error;
}
case ATAREINIT: {
struct ata_softc *scp;
int s;
scp = device_get_softc(device);
if (!scp)
return ENODEV;
/* 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);
error = ata_reinit(scp);
splx(s);
return error;
}
case ATAGMODE: {
struct ata_softc *scp;
scp = device_get_softc(device);
if (!scp)
return ENODEV;
if (scp->dev_param[MASTER])
iocmd->u.mode.mode[MASTER] = scp->mode[MASTER];
else
iocmd->u.mode.mode[MASTER] = -1;
if (scp->dev_param[SLAVE])
iocmd->u.mode.mode[SLAVE] = scp->mode[SLAVE];
else
iocmd->u.mode.mode[SLAVE] = -1;
return 0;
}
case ATASMODE: {
struct ata_softc *scp;
scp = device_get_softc(device);
if (!scp)
return ENODEV;
if (scp->dev_param[MASTER] && iocmd->u.mode.mode[MASTER] >= 0) {
ata_change_mode(scp, ATA_MASTER, iocmd->u.mode.mode[MASTER]);
iocmd->u.mode.mode[MASTER] = scp->mode[MASTER];
}
else
iocmd->u.mode.mode[MASTER] = -1;
if (scp->dev_param[SLAVE] && iocmd->u.mode.mode[SLAVE] >= 0) {
ata_change_mode(scp, ATA_SLAVE, iocmd->u.mode.mode[SLAVE]);
iocmd->u.mode.mode[SLAVE] = scp->mode[SLAVE];
}
else
iocmd->u.mode.mode[SLAVE] = -1;
return 0;
}
case ATAGPARM: {
struct ata_softc *scp;
scp = device_get_softc(device);
if (!scp)
return ENODEV;
iocmd->u.param.type[MASTER] =
scp->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER);
iocmd->u.param.type[SLAVE] =
scp->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE);
if (scp->dev_name[MASTER])
strcpy(iocmd->u.param.name[MASTER], scp->dev_name[MASTER]);
if (scp->dev_name[SLAVE])
strcpy(iocmd->u.param.name[SLAVE], scp->dev_name[SLAVE]);
if (scp->dev_param[MASTER])
bcopy(scp->dev_param[MASTER], &iocmd->u.param.params[MASTER],
sizeof(struct ata_params));
if (scp->dev_param[SLAVE])
bcopy(scp->dev_param[SLAVE], &iocmd->u.param.params[SLAVE],
sizeof(struct ata_params));
return 0;
}
#if defined(DEV_ATAPICD) || defined(DEV_ATAPIFD) || defined(DEV_ATAPIST)
case ATAPICMD: {
struct ata_softc *scp;
struct atapi_softc *atp;
caddr_t buf;
scp = device_get_softc(device);
if (!scp)
return ENODEV;
if (!scp->dev_softc[iocmd->device] ||
!(scp->devices &
(iocmd->device == 0 ? ATA_ATAPI_MASTER : ATA_ATAPI_SLAVE)))
return ENODEV;
if (!(buf = malloc(iocmd->u.atapi.count, M_ATA, M_NOWAIT)))
return ENOMEM;
atp = scp->dev_softc[iocmd->device];
if (iocmd->u.atapi.flags & ATAPI_CMD_WRITE) {
error = copyin(iocmd->u.atapi.data, buf, iocmd->u.atapi.count);
if (error)
return error;
}
error = atapi_queue_cmd(atp, iocmd->u.atapi.ccb,
buf, iocmd->u.atapi.count,
(iocmd->u.atapi.flags == ATAPI_CMD_READ ?
ATPR_F_READ : 0) | ATPR_F_QUIET,
iocmd->u.atapi.timeout, NULL, NULL);
if (error) {
iocmd->u.atapi.error = error;
bcopy(&atp->sense, iocmd->u.atapi.sense_data,
sizeof(struct atapi_reqsense));
error = 0;
}
else if (iocmd->u.atapi.flags & ATAPI_CMD_READ)
error = copyout(buf, iocmd->u.atapi.data, iocmd->u.atapi.count);
free(buf, M_ATA);
return error;
}
#endif
}
return ENOTTY;
}
static int
ata_getparam(struct ata_softc *scp, int device, u_int8_t command)
{
struct ata_params *ata_parm;
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_parm = malloc(sizeof(struct ata_params), M_ATA, M_NOWAIT);
if (!ata_parm) {
int i;
for (i = 0; i < sizeof(struct ata_params)/sizeof(int16_t); i++)
ATA_INW(scp->r_io, ATA_DATA);
ata_printf(scp, device, "malloc for identify data failed\n");
return -1;
}
ATA_INSW(scp->r_io, ATA_DATA, (int16_t *)ata_parm,
sizeof(struct ata_params)/sizeof(int16_t));
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) {
DELAY(100);
if (!(ATA_INB(scp->r_altio, ATA_ALTSTAT) & ATA_S_DRQ))
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_CONTROL:
wakeup((caddr_t)scp);
break;
case ATA_WAIT_READY:
case ATA_WAIT_READY | ATA_CONTROL:
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 %sstatus = %02x\n",
intr_count, active2str(scp->active), scp->status);
}
#endif
}
scp->active &= ATA_CONTROL;
if (scp->active & ATA_CONTROL)
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;
if (atapi_transfer(atapi_request) == ATA_OP_CONTINUES)
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(10);
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(10);
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;
if (!scp->r_io || !scp->r_altio || !scp->r_irq)
return ENXIO;
scp->active = ATA_CONTROL;
scp->running = NULL;
devices = scp->devices;
ata_printf(scp, -1, "resetting devices .. ");
ata_reset(scp);
if ((misdev = devices & ~scp->devices)) {
if (misdev)
printf("\n");
#ifdef DEV_ATADISK
if (misdev & ATA_ATA_MASTER && scp->dev_softc[MASTER])
ad_detach(scp->dev_softc[MASTER], 0);
if (misdev & ATA_ATA_SLAVE && scp->dev_softc[SLAVE])
ad_detach(scp->dev_softc[SLAVE], 0);
#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)) {
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;
}
if (!misdev && newdev)
printf("\n");
#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");
scp->active = ATA_IDLE;
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(10);
scp->status = ATA_INB(scp->r_io, ATA_STATUS);
if (scp->status == 0xff)
return -1;
}
/* 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);
/* sanity checks */
switch(scp->active) {
case ATA_IDLE:
break;
case ATA_CONTROL:
if (flags == ATA_WAIT_INTR || flags == ATA_WAIT_READY)
break;
goto out;
case ATA_ACTIVE_ATA:
case ATA_ACTIVE_ATAPI:
if (flags == ATA_IMMEDIATE)
break;
default:
out:
printf("ata_command called %s flags=%s cmd=%02x\n",
active2str(scp->active), active2str(flags), command);
break;
}
#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;
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 (tsleep((caddr_t)scp, PRIBIO, "atacmd", 10 * hz) != 0) {
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;
}
void
ata_set_name(struct ata_softc *scp, int device, char *name, int lun)
{
scp->dev_name[ATA_DEV(device)] = malloc(strlen(name) + 4, M_ATA, M_NOWAIT);
if (scp->dev_name[ATA_DEV(device)])
sprintf(scp->dev_name[ATA_DEV(device)], "%s%d", name, lun);
}
void
ata_free_name(struct ata_softc *scp, int device)
{
if (scp->dev_name[ATA_DEV(device)])
free(scp->dev_name[ATA_DEV(device)], M_ATA);
}
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 {
if (scp->dev_name[ATA_DEV(device)])
ret = printf("%s: ", scp->dev_name[ATA_DEV(device)]);
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[64];
bzero(buf, sizeof(buf));
if (active & ATA_IDLE)
strcat(buf, "ATA_IDLE ");
if (active & ATA_IMMEDIATE)
strcat(buf, "ATA_IMMEDIATE ");
if (active & ATA_WAIT_INTR)
strcat(buf, "ATA_WAIT_INTR ");
if (active & ATA_WAIT_READY)
strcat(buf, "ATA_WAIT_READY ");
if (active & ATA_ACTIVE)
strcat(buf, "ATA_ACTIVE ");
if (active & ATA_ACTIVE_ATA)
strcat(buf, "ATA_ACTIVE_ATA ");
if (active & ATA_ACTIVE_ATAPI)
strcat(buf, "ATA_ACTIVE_ATAPI ");
if (active & ATA_CONTROL)
strcat(buf, "ATA_CONTROL ");
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 umode, wmode, pmode;
int s = splbio();
while (!atomic_cmpset_int(&scp->active, ATA_IDLE, ATA_ACTIVE))
tsleep((caddr_t)&s, PRIBIO, "atachm", hz/4);
umode = ata_umode(ATA_PARAM(scp, device));
wmode = ata_wmode(ATA_PARAM(scp, device));
pmode = ata_pmode(ATA_PARAM(scp, device));
switch (mode & ATA_DMA_MASK) {
case ATA_UDMA:
if ((mode & ATA_MODE_MASK) < umode)
umode = mode & ATA_MODE_MASK;
break;
case ATA_WDMA:
if ((mode & ATA_MODE_MASK) < wmode)
wmode = mode & ATA_MODE_MASK;
umode = -1;
break;
default:
if (((mode & ATA_MODE_MASK) - ATA_PIO0) < pmode)
pmode = (mode & ATA_MODE_MASK) - ATA_PIO0;
umode = -1;
wmode = -1;
}
ata_dmainit(scp, device, pmode, wmode, umode);
scp->active = ATA_IDLE;
ata_start(scp);
splx(s);
}
static void
ata_init(void)
{
/* register controlling device */
make_dev(&ata_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "ata");
/* 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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