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freebsd-dev/sys/dev/ata/ata-all.c
Søren Schmidt 498e55436a Add support for detaching PCI controllers. 
This adds support for cardbus ATA/SATA controllers. I get roughly the
same transfer speeds as on true PCI controllers. Nice to be able to add
a couble of "real" disks to a laptop :)
2004-03-15 12:03:48 +00:00

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/*-
* Copyright (c) 1998 - 2004 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ata.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ata.h>
#include <sys/kernel.h>
#include <sys/endian.h>
#include <sys/ctype.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/sema.h>
#include <sys/taskqueue.h>
#include <vm/uma.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 <geom/geom_disk.h>
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-disk.h>
#include <dev/ata/ata-raid.h>
/* device structures */
static d_ioctl_t ata_ioctl;
static struct cdevsw ata_cdevsw = {
.d_version = D_VERSION,
.d_flags = D_NEEDGIANT,
.d_ioctl = ata_ioctl,
.d_name = "ata",
};
/* prototypes */
static void ata_shutdown(void *, int);
static int ata_getparam(struct ata_device *, u_int8_t);
static void ata_identify_devices(struct ata_channel *);
static void ata_boot_attach(void);
static void bswap(int8_t *, int);
static void btrim(int8_t *, int);
static void bpack(int8_t *, int8_t *, int);
static void ata_init(void);
/* global vars */
MALLOC_DEFINE(M_ATA, "ATA generic", "ATA driver generic layer");
struct intr_config_hook *ata_delayed_attach = NULL;
devclass_t ata_devclass;
uma_zone_t ata_zone;
int ata_wc = 1;
/* local vars */
static int ata_dma = 1;
static int atapi_dma = 0;
/* sysctl vars */
SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters");
TUNABLE_INT("hw.ata.ata_dma", &ata_dma);
SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma, CTLFLAG_RDTUN, &ata_dma, 0,
"ATA disk DMA mode control");
TUNABLE_INT("hw.ata.wc", &ata_wc);
SYSCTL_INT(_hw_ata, OID_AUTO, wc, CTLFLAG_RDTUN, &ata_wc, 0,
"ATA disk write caching");
TUNABLE_INT("hw.ata.atapi_dma", &atapi_dma);
SYSCTL_INT(_hw_ata, OID_AUTO, atapi_dma, CTLFLAG_RDTUN, &atapi_dma, 0,
"ATAPI device DMA mode control");
/*
* newbus device interface related functions
*/
int
ata_probe(device_t dev)
{
struct ata_channel *ch;
if (!dev || !(ch = device_get_softc(dev)))
return ENXIO;
if (ch->r_irq)
return EEXIST;
/* initialize the softc basics */
ata_generic_hw(ch);
ch->device[MASTER].channel = ch;
ch->device[MASTER].unit = ATA_MASTER;
ch->device[MASTER].mode = ATA_PIO;
ch->device[SLAVE].channel = ch;
ch->device[SLAVE].unit = ATA_SLAVE;
ch->device[SLAVE].mode = ATA_PIO;
ch->dev = dev;
ch->state = ATA_IDLE;
/* initialise device(s) on this channel */
ch->locking(ch, ATA_LF_LOCK);
ch->hw.reset(ch);
ch->locking(ch, ATA_LF_UNLOCK);
return 0;
}
int
ata_attach(device_t dev)
{
struct ata_channel *ch;
int error, rid;
if (!dev || !(ch = device_get_softc(dev)))
return ENXIO;
rid = ATA_IRQ_RID;
ch->r_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (!ch->r_irq) {
ata_printf(ch, -1, "unable to allocate interrupt\n");
return ENXIO;
}
if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS,
ch->hw.interrupt, ch, &ch->ih))) {
ata_printf(ch, -1, "unable to setup interrupt\n");
return error;
}
if (ch->dma)
ch->dma->alloc(ch);
/* initialize queue and associated lock */
bzero(&ch->queue_mtx, sizeof(struct mtx));
mtx_init(&ch->queue_mtx, "ATA queue lock", MTX_DEF, 0);
TAILQ_INIT(&ch->ata_queue);
/* do not attach devices if we are in early boot */
if (ata_delayed_attach)
return 0;
ata_identify_devices(ch);
if (ch->device[MASTER].attach)
ch->device[MASTER].attach(&ch->device[MASTER]);
if (ch->device[SLAVE].attach)
ch->device[SLAVE].attach(&ch->device[SLAVE]);
#ifdef DEV_ATAPICAM
atapi_cam_attach_bus(ch);
#endif
return 0;
}
int
ata_detach(device_t dev)
{
struct ata_channel *ch;
if (!dev || !(ch = device_get_softc(dev)) || !ch->r_irq)
return ENXIO;
/* detach devices on this channel */
if (ch->device[MASTER].detach)
ch->device[MASTER].detach(&ch->device[MASTER]);
if (ch->device[SLAVE].detach)
ch->device[SLAVE].detach(&ch->device[SLAVE]);
#ifdef DEV_ATAPICAM
atapi_cam_detach_bus(ch);
#endif
/* fail outstanding requests on this channel */
ata_fail_requests(ch, NULL);
/* flush cache and powerdown device */
if (ch->device[MASTER].param) {
if (ch->device[MASTER].param->support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(&ch->device[MASTER], ATA_FLUSHCACHE, 0, 0, 0);
ata_controlcmd(&ch->device[MASTER], ATA_SLEEP, 0, 0, 0);
free(ch->device[MASTER].param, M_ATA);
ch->device[MASTER].param = NULL;
}
if (ch->device[SLAVE].param) {
if (ch->device[SLAVE].param->support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(&ch->device[SLAVE], ATA_FLUSHCACHE, 0, 0, 0);
ata_controlcmd(&ch->device[SLAVE], ATA_SLEEP, 0, 0, 0);
free(ch->device[SLAVE].param, M_ATA);
ch->device[SLAVE].param = NULL;
}
ch->device[MASTER].mode = ATA_PIO;
ch->device[SLAVE].mode = ATA_PIO;
ch->devices = 0;
if (ch->dma)
ch->dma->free(ch);
bus_teardown_intr(dev, ch->r_irq, ch->ih);
bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
ch->r_irq = NULL;
mtx_destroy(&ch->queue_mtx);
return 0;
}
int
ata_reinit(struct ata_channel *ch)
{
struct ata_request *request = ch->running;
int devices, misdev, newdev;
if (!ch->r_irq)
return ENXIO;
/* reset the HW */
if (bootverbose)
ata_printf(ch, -1, "reiniting channel ..\n");
ATA_FORCELOCK_CH(ch, ATA_CONTROL);
ch->flags |= ATA_IMMEDIATE_MODE;
ch->running = NULL;
devices = ch->devices;
ch->hw.reset(ch);
ATA_UNLOCK_CH(ch);
if (bootverbose)
ata_printf(ch, -1, "resetting done ..\n");
/* detach what left the channel during reset */
if ((misdev = devices & ~ch->devices)) {
if ((misdev & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) &&
ch->device[MASTER].detach) {
if (request && (request->device == &ch->device[MASTER])) {
request->result = ENXIO;
if (request->callback)
(request->callback)(request);
else
sema_post(&request->done);
}
ch->device[MASTER].detach(&ch->device[MASTER]);
ata_fail_requests(ch, &ch->device[MASTER]);
free(ch->device[MASTER].param, M_ATA);
ch->device[MASTER].param = NULL;
}
if ((misdev & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) &&
ch->device[SLAVE].detach) {
if (request && (request->device == &ch->device[SLAVE])) {
request->result = ENXIO;
if (request->callback)
(request->callback)(request);
else
sema_post(&request->done);
}
ch->device[SLAVE].detach(&ch->device[SLAVE]);
ata_fail_requests(ch, &ch->device[SLAVE]);
free(ch->device[SLAVE].param, M_ATA);
ch->device[SLAVE].param = NULL;
}
}
/* identify what is present on the channel now */
ata_identify_devices(ch);
/* attach new devices that appeared during reset */
if ((newdev = ~devices & ch->devices)) {
if ((newdev & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) &&
ch->device[MASTER].attach)
ch->device[MASTER].attach(&ch->device[MASTER]);
if ((newdev & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) &&
ch->device[SLAVE].attach)
ch->device[SLAVE].attach(&ch->device[SLAVE]);
}
/* restore device config and transfermode on devices */
if (ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER)) {
if (ch->device[MASTER].config)
ch->device[MASTER].config(&ch->device[MASTER]);
ch->device[MASTER].setmode(&ch->device[MASTER],ch->device[MASTER].mode);
}
if (ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE)) {
if (ch->device[SLAVE].config)
ch->device[SLAVE].config(&ch->device[SLAVE]);
ch->device[SLAVE].setmode(&ch->device[SLAVE], ch->device[SLAVE].mode);
}
#ifdef DEV_ATAPICAM
atapi_cam_reinit_bus(ch);
#endif
if (bootverbose)
ata_printf(ch, -1, "device config done ..\n");
ch->flags &= ~ATA_IMMEDIATE_MODE;
ata_start(ch);
return 0;
}
int
ata_suspend(device_t dev)
{
struct ata_channel *ch;
if (!dev || !(ch = device_get_softc(dev)))
return ENXIO;
ch->locking(ch, ATA_LF_LOCK);
ATA_SLEEPLOCK_CH(ch, ATA_CONTROL);
return 0;
}
int
ata_resume(device_t dev)
{
struct ata_channel *ch;
int error;
if (!dev || !(ch = device_get_softc(dev)))
return ENXIO;
ch->locking(ch, ATA_LF_LOCK);
error = ata_reinit(ch);
ch->locking(ch, ATA_LF_UNLOCK);
ata_start(ch);
return error;
}
static void
ata_shutdown(void *arg, int howto)
{
struct ata_channel *ch;
int ctlr;
/* flush cache on all devices */
for (ctlr = 0; ctlr < devclass_get_maxunit(ata_devclass); ctlr++) {
if (!(ch = devclass_get_softc(ata_devclass, ctlr)))
continue;
if (ch->device[MASTER].param &&
ch->device[MASTER].param->support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(&ch->device[MASTER], ATA_FLUSHCACHE, 0, 0, 0);
if (ch->device[SLAVE].param &&
ch->device[SLAVE].param->support.command2 & ATA_SUPPORT_FLUSHCACHE)
ata_controlcmd(&ch->device[SLAVE], ATA_FLUSHCACHE, 0, 0, 0);
}
}
/*
* device related interfaces
*/
static int
ata_ioctl(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 = devclass_get_device(ata_devclass, iocmd->channel);
struct ata_channel *ch;
struct ata_device *atadev;
struct ata_request *request;
caddr_t buf;
int error = ENOTTY;
DROP_GIANT();
switch (iocmd->cmd) {
case ATAGMAXCHANNEL:
iocmd->u.maxchan = devclass_get_maxunit(ata_devclass);
error = 0;
break;
case ATAGPARM:
if (!device || !(ch = device_get_softc(device))) {
error = ENXIO;
break;
}
iocmd->u.param.type[MASTER] =
ch->devices & (ATA_ATA_MASTER | ATA_ATAPI_MASTER);
iocmd->u.param.type[SLAVE] =
ch->devices & (ATA_ATA_SLAVE | ATA_ATAPI_SLAVE);
if (ch->device[MASTER].name)
strcpy(iocmd->u.param.name[MASTER], ch->device[MASTER].name);
if (ch->device[SLAVE].name)
strcpy(iocmd->u.param.name[SLAVE], ch->device[SLAVE].name);
if (ch->device[MASTER].param)
bcopy(ch->device[MASTER].param, &iocmd->u.param.params[MASTER],
sizeof(struct ata_params));
if (ch->device[SLAVE].param)
bcopy(ch->device[SLAVE].param, &iocmd->u.param.params[SLAVE],
sizeof(struct ata_params));
error = 0;
break;
case ATAGMODE:
if (!device || !(ch = device_get_softc(device))) {
error = ENXIO;
break;
}
iocmd->u.mode.mode[MASTER] = ch->device[MASTER].mode;
iocmd->u.mode.mode[SLAVE] = ch->device[SLAVE].mode;
error = 0;
break;
case ATASMODE:
if (!device || !(ch = device_get_softc(device))) {
error = ENXIO;
break;
}
if (iocmd->u.mode.mode[MASTER] >= 0 && ch->device[MASTER].param)
ch->device[MASTER].setmode(&ch->device[MASTER],
iocmd->u.mode.mode[MASTER]);
iocmd->u.mode.mode[MASTER] = ch->device[MASTER].mode;
if (iocmd->u.mode.mode[SLAVE] >= 0 && ch->device[SLAVE].param)
ch->device[SLAVE].setmode(&ch->device[SLAVE],
iocmd->u.mode.mode[SLAVE]);
iocmd->u.mode.mode[SLAVE] = ch->device[SLAVE].mode;
error = 0;
break;
case ATAREQUEST:
if (!device || !(ch = device_get_softc(device))) {
error = ENXIO;
break;
}
if (!(atadev = &ch->device[iocmd->device])) {
error = ENODEV;
break;
}
if (!(buf = malloc(iocmd->u.request.count, M_ATA, M_NOWAIT))) {
error = ENOMEM;
break;
}
if (!(request = ata_alloc_request())) {
error = ENOMEM;
free(buf, M_ATA);
break;
}
if (iocmd->u.request.flags & ATA_CMD_WRITE) {
error = copyin(iocmd->u.request.data, buf, iocmd->u.request.count);
if (error) {
free(buf, M_ATA);
ata_free_request(request);
break;
}
}
request->device = atadev;
if (iocmd->u.request.flags & ATA_CMD_ATAPI) {
request->flags = ATA_R_ATAPI;
bcopy(iocmd->u.request.u.atapi.ccb, request->u.atapi.ccb, 16);
}
else {
request->u.ata.command = iocmd->u.request.u.ata.command;
request->u.ata.feature = iocmd->u.request.u.ata.feature;
request->u.ata.lba = iocmd->u.request.u.ata.lba;
request->u.ata.count = iocmd->u.request.u.ata.count;
}
request->timeout = iocmd->u.request.timeout;
request->data = buf;
request->bytecount = iocmd->u.request.count;
request->transfersize = request->bytecount;
if (iocmd->u.request.flags & ATA_CMD_CONTROL)
request->flags |= ATA_R_CONTROL;
if (iocmd->u.request.flags & ATA_CMD_READ)
request->flags |= ATA_R_READ;
if (iocmd->u.request.flags & ATA_CMD_WRITE)
request->flags |= ATA_R_WRITE;
ata_queue_request(request);
if (request->result)
iocmd->u.request.error = request->result;
else {
if (iocmd->u.request.flags & ATA_CMD_READ)
error = copyout(buf,
iocmd->u.request.data, iocmd->u.request.count);
else
error = 0;
}
free(buf, M_ATA);
ata_free_request(request);
break;
case ATAREINIT:
if (!device || !(ch = device_get_softc(device)))
return ENXIO;
error = ata_reinit(ch);
ata_start(ch);
break;
case ATAATTACH:
if (!device) {
error = ENXIO;
break;
}
/* SOS should enable channel HW on controller XXX */
error = ata_probe(device);
if (!error)
error = ata_attach(device);
break;
case ATADETACH:
if (!device) {
error = ENXIO;
break;
}
error = ata_detach(device);
/* SOS should disable channel HW on controller XXX */
break;
#ifdef DEV_ATARAID
case ATARAIDCREATE:
error = ata_raid_create(&iocmd->u.raid_setup);
break;
case ATARAIDDELETE:
error = ata_raid_delete(iocmd->channel);
break;
case ATARAIDSTATUS:
error = ata_raid_status(iocmd->channel, &iocmd->u.raid_status);
break;
case ATARAIDADDSPARE:
error = ata_raid_addspare(iocmd->channel, iocmd->u.raid_spare.disk);
break;
case ATARAIDREBUILD:
error = ata_raid_rebuild(iocmd->channel);
break;
#endif
}
PICKUP_GIANT();
return error;
}
/*
* device probe functions
*/
static int
ata_getparam(struct ata_device *atadev, u_int8_t command)
{
struct ata_request *request;
int error = ENOMEM;
if (!atadev->param)
atadev->param = malloc(sizeof(struct ata_params), M_ATA, M_NOWAIT);
if (atadev->param) {
request = ata_alloc_request();
if (request) {
int retries = 2;
while (retries-- > 0) {
request->device = atadev;
request->timeout = 5;
request->retries = -1;
request->u.ata.command = command;
request->flags = (ATA_R_READ | ATA_R_IMMEDIATE);
request->data = (caddr_t)atadev->param;
request->bytecount = sizeof(struct ata_params);
request->transfersize = DEV_BSIZE;
ata_queue_request(request);
if (!(error = request->result))
break;
}
ata_free_request(request);
}
if (!error && (isprint(atadev->param->model[0]) ||
isprint(atadev->param->model[1]))) {
struct ata_params *atacap = atadev->param;
#if BYTE_ORDER == BIG_ENDIAN
int16_t *ptr;
for (ptr = (int16_t *)atacap;
ptr < (int16_t *)atacap + sizeof(struct ata_params)/2; ptr++) {
*ptr = bswap16(*ptr);
}
#endif
if (!((atacap->model[0] == 'N' && atacap->model[1] == 'E') ||
(atacap->model[0] == 'F' && atacap->model[1] == 'X') ||
(atacap->model[0] == 'P' && atacap->model[1] == 'i')))
bswap(atacap->model, sizeof(atacap->model));
btrim(atacap->model, sizeof(atacap->model));
bpack(atacap->model, atacap->model, sizeof(atacap->model));
bswap(atacap->revision, sizeof(atacap->revision));
btrim(atacap->revision, sizeof(atacap->revision));
bpack(atacap->revision, atacap->revision, sizeof(atacap->revision));
bswap(atacap->serial, sizeof(atacap->serial));
btrim(atacap->serial, sizeof(atacap->serial));
bpack(atacap->serial, atacap->serial, sizeof(atacap->serial));
if (bootverbose)
ata_prtdev(atadev,
"pio=0x%02x wdma=0x%02x udma=0x%02x cable=%spin\n",
ata_pmode(atacap), ata_wmode(atacap),
ata_umode(atacap),
(atacap->hwres & ATA_CABLE_ID) ? "80":"40");
}
else {
if (!error)
error = ENXIO;
if (atadev->param) {
free(atadev->param, M_ATA);
atadev->param = NULL;
}
}
}
return error;
}
static void
ata_identify_devices(struct ata_channel *ch)
{
if (ch->devices & ATA_ATA_SLAVE) {
if (ata_getparam(&ch->device[SLAVE], ATA_ATA_IDENTIFY))
ch->devices &= ~ATA_ATA_SLAVE;
#ifdef DEV_ATADISK
else
ch->device[SLAVE].attach = ad_attach;
#endif
}
if (ch->devices & ATA_ATAPI_SLAVE) {
if (ata_getparam(&ch->device[SLAVE], ATA_ATAPI_IDENTIFY))
ch->devices &= ~ATA_ATAPI_SLAVE;
else {
switch (ch->device[SLAVE].param->config & ATA_ATAPI_TYPE_MASK) {
#ifdef DEV_ATAPICD
case ATA_ATAPI_TYPE_CDROM:
ch->device[SLAVE].attach = acd_attach;
break;
#endif
#ifdef DEV_ATAPIFD
case ATA_ATAPI_TYPE_DIRECT:
ch->device[SLAVE].attach = afd_attach;
break;
#endif
#ifdef DEV_ATAPIST
case ATA_ATAPI_TYPE_TAPE:
ch->device[SLAVE].attach = ast_attach;
break;
#endif
}
}
}
if (ch->devices & ATA_ATA_MASTER) {
if (ata_getparam(&ch->device[MASTER], ATA_ATA_IDENTIFY))
ch->devices &= ~ATA_ATA_MASTER;
#ifdef DEV_ATADISK
else
ch->device[MASTER].attach = ad_attach;
#endif
}
if (ch->devices & ATA_ATAPI_MASTER) {
if (ata_getparam(&ch->device[MASTER], ATA_ATAPI_IDENTIFY))
ch->devices &= ~ATA_ATAPI_MASTER;
else {
switch (ch->device[MASTER].param->config & ATA_ATAPI_TYPE_MASK) {
#ifdef DEV_ATAPICD
case ATA_ATAPI_TYPE_CDROM:
ch->device[MASTER].attach = acd_attach;
break;
#endif
#ifdef DEV_ATAPIFD
case ATA_ATAPI_TYPE_DIRECT:
ch->device[MASTER].attach = afd_attach;
break;
#endif
#ifdef DEV_ATAPIST
case ATA_ATAPI_TYPE_TAPE:
ch->device[MASTER].attach = ast_attach;
break;
#endif
}
}
}
/* setup basic transfer mode by setting PIO mode and DMA if supported */
if (ch->device[MASTER].attach) {
ch->device[MASTER].setmode(&ch->device[MASTER], ATA_PIO_MAX);
if ((((ch->devices & ATA_ATAPI_MASTER) && atapi_dma &&
(ch->device[MASTER].param->config&ATA_DRQ_MASK) != ATA_DRQ_INTR)||
((ch->devices & ATA_ATA_MASTER) && ata_dma)) && ch->dma)
ch->device[MASTER].setmode(&ch->device[MASTER], ATA_DMA_MAX);
}
if (ch->device[SLAVE].attach) {
ch->device[SLAVE].setmode(&ch->device[SLAVE], ATA_PIO_MAX);
if ((((ch->devices & ATA_ATAPI_SLAVE) && atapi_dma &&
(ch->device[SLAVE].param->config&ATA_DRQ_MASK) != ATA_DRQ_INTR) ||
((ch->devices & ATA_ATA_SLAVE) && ata_dma)) && ch->dma)
ch->device[SLAVE].setmode(&ch->device[SLAVE], ATA_DMA_MAX);
}
}
static void
ata_boot_attach(void)
{
struct ata_channel *ch;
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 (!(ch = devclass_get_softc(ata_devclass, ctlr)))
continue;
ata_identify_devices(ch);
if (ch->device[MASTER].attach)
ch->device[MASTER].attach(&ch->device[MASTER]);
if (ch->device[SLAVE].attach)
ch->device[SLAVE].attach(&ch->device[SLAVE]);
#ifdef DEV_ATAPICAM
atapi_cam_attach_bus(ch);
#endif
}
#ifdef DEV_ATARAID
ata_raid_attach();
#endif
if (ata_delayed_attach) {
config_intrhook_disestablish(ata_delayed_attach);
free(ata_delayed_attach, M_TEMP);
ata_delayed_attach = NULL;
}
}
/*
* misc support functions
*/
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;
}
int
ata_printf(struct ata_channel *ch, int device, const char * fmt, ...)
{
va_list ap;
int ret;
if (device == -1)
ret = printf("ata%d: ", device_get_unit(ch->dev));
else {
if (ch->device[ATA_DEV(device)].name)
ret = printf("%s: ", ch->device[ATA_DEV(device)].name);
else
ret = printf("ata%d-%s: ", device_get_unit(ch->dev),
(device == ATA_MASTER) ? "master" : "slave");
}
va_start(ap, fmt);
ret += vprintf(fmt, ap);
va_end(ap);
return ret;
}
int
ata_prtdev(struct ata_device *atadev, const char * fmt, ...)
{
va_list ap;
int ret;
if (atadev->name)
ret = printf("%s: ", atadev->name);
else
ret = printf("ata%d-%s: ", device_get_unit(atadev->channel->dev),
(atadev->unit == ATA_MASTER) ? "master" : "slave");
va_start(ap, fmt);
ret += vprintf(fmt, ap);
va_end(ap);
return ret;
}
void
ata_set_name(struct ata_device *atadev, char *name, int lun)
{
atadev->name = malloc(strlen(name) + 4, M_ATA, M_NOWAIT);
if (atadev->name)
sprintf(atadev->name, "%s%d", name, lun);
}
void
ata_free_name(struct ata_device *atadev)
{
if (atadev->name)
free(atadev->name, M_ATA);
atadev->name = NULL;
}
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);
}
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_DMA: return "BIOSDMA";
case ATA_WDMA0: return "WDMA0";
case ATA_WDMA1: return "WDMA1";
case ATA_WDMA2: return "WDMA2";
case ATA_UDMA0: return "UDMA16";
case ATA_UDMA1: return "UDMA25";
case ATA_UDMA2: return "UDMA33";
case ATA_UDMA3: return "UDMA40";
case ATA_UDMA4: return "UDMA66";
case ATA_UDMA5: return "UDMA100";
case ATA_UDMA6: return "UDMA133";
case ATA_SA150: return "SATA150";
default: return "???";
}
}
int
ata_pmode(struct ata_params *ap)
{
if (ap->atavalid & ATA_FLAG_64_70) {
if (ap->apiomodes & 0x02)
return ATA_PIO4;
if (ap->apiomodes & 0x01)
return ATA_PIO3;
}
if (ap->mwdmamodes & 0x04)
return ATA_PIO4;
if (ap->mwdmamodes & 0x02)
return ATA_PIO3;
if (ap->mwdmamodes & 0x01)
return ATA_PIO2;
if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x200)
return ATA_PIO2;
if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x100)
return ATA_PIO1;
if ((ap->retired_piomode & ATA_RETIRED_PIO_MASK) == 0x000)
return ATA_PIO0;
return ATA_PIO0;
}
int
ata_wmode(struct ata_params *ap)
{
if (ap->mwdmamodes & 0x04)
return ATA_WDMA2;
if (ap->mwdmamodes & 0x02)
return ATA_WDMA1;
if (ap->mwdmamodes & 0x01)
return ATA_WDMA0;
return -1;
}
int
ata_umode(struct ata_params *ap)
{
if (ap->atavalid & ATA_FLAG_88) {
if (ap->udmamodes & 0x40)
return ATA_UDMA6;
if (ap->udmamodes & 0x20)
return ATA_UDMA5;
if (ap->udmamodes & 0x10)
return ATA_UDMA4;
if (ap->udmamodes & 0x08)
return ATA_UDMA3;
if (ap->udmamodes & 0x04)
return ATA_UDMA2;
if (ap->udmamodes & 0x02)
return ATA_UDMA1;
if (ap->udmamodes & 0x01)
return ATA_UDMA0;
}
return -1;
}
int
ata_limit_mode(struct ata_device *atadev, int mode, int maxmode)
{
if (maxmode && mode > maxmode)
mode = maxmode;
if (mode >= ATA_UDMA0 && ata_umode(atadev->param) > 0)
return min(mode, ata_umode(atadev->param));
if (mode >= ATA_WDMA0 && ata_wmode(atadev->param) > 0)
return min(mode, ata_wmode(atadev->param));
if (mode > ata_pmode(atadev->param))
return min(mode, ata_pmode(atadev->param));
return mode;
}
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);
}
/* register handler to flush write caches on shutdown */
if ((EVENTHANDLER_REGISTER(shutdown_post_sync, ata_shutdown,
NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
printf("ata: shutdown event registration failed!\n");
/* init our UMA zone for ATA requests */
ata_zone = uma_zcreate("ata_request", sizeof(struct ata_request),
NULL, NULL, NULL, NULL, 0, 0);
}
SYSINIT(atadev, SI_SUB_DRIVERS, SI_ORDER_SECOND, ata_init, NULL)
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