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freebsd-skq/sys/dev/ata/ata-all.c
Peter Wemm 6182fdbda8 Bring the 'new-bus' to the i386. This extensively changes the way the 
i386 platform boots, it is no longer ISA-centric, and is fully dynamic.
Most old drivers compile and run without modification via 'compatability
shims' to enable a smoother transition.  eisa, isapnp and pccard* are
not yet using the new resource manager.  Once fully converted, all drivers
will be loadable, including PCI and ISA.

(Some other changes appear to have snuck in, including a port of Soren's
 ATA driver to the Alpha.  Soren, back this out if you need to.)

This is a checkpoint of work-in-progress, but is quite functional.

The bulk of the work was done over the last few years by Doug Rabson and
Garrett Wollman.

Approved by:	core
1999-04-16 21:22:55 +00:00

656 lines
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/*-
* Copyright (c) 1998,1999 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.
*
* $Id: ata-all.c,v 1.6 1999/04/10 18:53:35 sos Exp $
*/
#include "ata.h"
#if NATA > 0
#include "isa.h"
#include "pci.h"
#include "atadisk.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/interrupt.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/devicestat.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/clock.h>
#ifdef __i386__
#include <machine/smp.h>
#endif
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#ifdef __i386__
#include <i386/isa/icu.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#else
#include <isa/isareg.h>
#endif
#include <dev/ata/ata-all.h>
#include <dev/ata/ata-disk.h>
#include <dev/ata/atapi-all.h>
/* misc defines */
#define UNIT(dev) (dev>>3 & 0x1f) /* assume 8 minor # per unit */
#define MIN(a,b) ((a)>(b)?(b):(a))
#if NSMP == 0
#define isa_apic_irq(x) x
#endif
/* prototypes */
#if NISA > 0 && defined(__i386__)
static int32_t ata_isaprobe(struct isa_device *);
static int32_t ata_isaattach(struct isa_device *);
#endif
#if NPCI > 0
static const char *ata_pciprobe(pcici_t, pcidi_t);
static void ata_pciattach(pcici_t, int32_t);
static void promise_intr(int32_t);
#endif
static int32_t ata_probe(int32_t, int32_t, int32_t, pcici_t, int32_t *);
static void ataintr(int32_t);
static int32_t atanlun = 0;
struct ata_softc *atadevices[MAXATA];
#if NISA > 0 && defined(__i386__)
struct isa_driver atadriver = { ata_isaprobe, ata_isaattach, "ata" };
static int32_t
ata_isaprobe(struct isa_device *devp)
{
int32_t ctlr, res;
for (ctlr = 0; ctlr < atanlun; ctlr++) {
if (atadevices[ctlr]->ioaddr == devp->id_iobase) {
printf("ata-isa%d: already registered as ata%d\n",
devp->id_unit, ctlr);
return 0;
}
}
res = ata_probe(devp->id_iobase, devp->id_iobase + ATA_ALTPORT, 0, 0,
&devp->id_unit);
if (res)
devp->id_intr = (inthand2_t *)ataintr;
return res;
}
static int32_t
ata_isaattach(struct isa_device *devp)
{
return 1;
}
#endif
#if NPCI > 0
static u_long ata_pcicount;
static struct pci_device ata_pcidevice = {
"ata-pci", ata_pciprobe, ata_pciattach, &ata_pcicount, 0
};
DATA_SET(pcidevice_set, ata_pcidevice);
static const char *
ata_pciprobe(pcici_t tag, pcidi_t type)
{
u_int32_t data;
data = pci_conf_read(tag, PCI_CLASS_REG);
if ((data & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE &&
((data & PCI_SUBCLASS_MASK) == 0x00010000 ||
((data & PCI_SUBCLASS_MASK) == 0x00040000))) {
switch (type) {
case 0x12308086:
return "Intel PIIX IDE controller";
case 0x70108086:
return "Intel PIIX3 IDE controller";
case 0x71118086:
return "Intel PIIX4 IDE controller";
case 0x4d33105a:
return "Promise Ultra/33 IDE controller";
case 0x522910b9:
return "AcerLabs Aladdin IDE controller";
case 0x06401095:
return "CMD 640 IDE controller";
case 0x06461095:
return "CMD 646 IDE controller";
#if 0
case 0x05711106:
return "VIA Apollo IDE controller";
case 0x01021078:
return "Cyrix 5530 IDE controller";
#endif
default:
return "Unknown PCI IDE controller";
}
}
return NULL;
}
static void
ata_pciattach(pcici_t tag, int32_t unit)
{
pcidi_t type, class, cmd;
int32_t iobase_1, iobase_2, altiobase_1, altiobase_2;
int32_t bmaddr_1 = 0, bmaddr_2 = 0, sysctrl = 0, irq1, irq2;
int32_t lun;
/* set up vendor-specific stuff */
type = pci_conf_read(tag, PCI_ID_REG);
class = pci_conf_read(tag, PCI_CLASS_REG);
cmd = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
#ifdef ATA_DEBUG
printf("ata%d: type=%08x class=%08x cmd=%08x\n", unit, type, class, cmd);
#endif
/* if this is a Promise controller handle it specially */
if (type == 0x4d33105a) {
iobase_1 = pci_conf_read(tag, 0x10) & 0xfffc;
altiobase_1 = pci_conf_read(tag, 0x14) & 0xfffc;
iobase_2 = pci_conf_read(tag, 0x18) & 0xfffc;
altiobase_2 = pci_conf_read(tag, 0x1c) & 0xfffc;
irq1 = irq2 = pci_conf_read(tag, PCI_INTERRUPT_REG) & 0xff;
bmaddr_1 = pci_conf_read(tag, 0x20) & 0xfffc;
bmaddr_2 = bmaddr_1 + ATA_BM_OFFSET1;
sysctrl = (pci_conf_read(tag, 0x20) & 0xfffc) + 0x1c;
outb(bmaddr_1 + 0x1f, inb(bmaddr_1 + 0x1f) | 0x01);
printf("ata-pci%d: Busmastering DMA supported\n", unit);
}
/* everybody else seems to do it this way */
else {
if ((class & 0x100) == 0) {
iobase_1 = IO_WD1;
altiobase_1 = iobase_1 + ATA_ALTPORT;
irq1 = 14;
}
else {
iobase_1 = pci_conf_read(tag, 0x10) & 0xfffc;
altiobase_1 = pci_conf_read(tag, 0x14) & 0xfffc;
irq1 = pci_conf_read(tag, PCI_INTERRUPT_REG) & 0xff;
}
if ((class & 0x400) == 0) {
iobase_2 = IO_WD2;
altiobase_2 = iobase_2 + ATA_ALTPORT;
irq2 = 15;
}
else {
iobase_2 = pci_conf_read(tag, 0x18) & 0xfffc;
altiobase_2 = pci_conf_read(tag, 0x1c) & 0xfffc;
irq2 = pci_conf_read(tag, PCI_INTERRUPT_REG) & 0xff;
}
/* is this controller busmaster capable ? */
if (pci_conf_read(tag, PCI_CLASS_REG) & 0x8000) {
/* is busmastering support turned on ? */
if ((pci_conf_read(tag, PCI_COMMAND_STATUS_REG) & 5) == 5) {
/* is there a valid port range to connect to ? */
if ((bmaddr_1 = pci_conf_read(tag, 0x20) & 0xfffc)) {
bmaddr_2 = bmaddr_1 + ATA_BM_OFFSET1;
printf("ata-pci%d: Busmastering DMA supported\n", unit);
}
else
printf("ata-pci%d: Busmastering DMA not configured\n",unit);
}
else
printf("ata-pci%d: Busmastering DMA not enabled\n", unit);
}
else
printf("ata-pci%d: Busmastering DMA not supported\n", unit);
}
/* now probe the addresse found for "real" ATA/ATAPI hardware */
lun = 0;
if (ata_probe(iobase_1, altiobase_1, bmaddr_1, tag, &lun)) {
if (iobase_1 == IO_WD1)
#ifdef __i386__
register_intr(irq1, (int)"", 0, (inthand2_t *)ataintr,
&bio_imask, lun);
#else
alpha_platform_setup_ide_intr(0, ataintr, (void *)(intptr_t)lun);
#endif
else {
if (sysctrl)
pci_map_int(tag, (inthand2_t *)promise_intr,
(void *)(intptr_t)lun, &bio_imask);
else
pci_map_int(tag, (inthand2_t *)ataintr, (void *)(intptr_t)lun,&bio_imask);
}
printf("ata%d at 0x%04x irq %d on ata-pci%d\n",
lun, iobase_1, isa_apic_irq(irq1), unit);
}
lun = 1;
if (ata_probe(iobase_2, altiobase_2, bmaddr_2, tag, &lun)) {
if (iobase_2 == IO_WD2)
#ifdef __i386__
register_intr(irq2, (int)"", 0, (inthand2_t *)ataintr,
&bio_imask, lun);
#else
alpha_platform_setup_ide_intr(1, ataintr, (void *)(intptr_t)lun);
#endif
else {
if (!sysctrl)
pci_map_int(tag, (inthand2_t *)ataintr, (void *)(intptr_t)lun,&bio_imask);
}
printf("ata%d at 0x%04x irq %d on ata-pci%d\n",
lun, iobase_2, isa_apic_irq(irq2), unit);
}
}
static void
promise_intr(int32_t unit)
{
struct ata_softc *scp = atadevices[unit];
int32_t channel = inl((pci_conf_read(scp->tag, 0x20) & 0xfffc) + 0x1c);
if (channel & 0x00000400)
ataintr(unit);
if (channel & 0x00004000)
ataintr(unit+1);
}
#endif
static int32_t
ata_probe(int32_t ioaddr, int32_t altioaddr, int32_t bmaddr,
pcici_t tag, int32_t *unit)
{
struct ata_softc *scp = atadevices[atanlun];
int32_t mask = 0;
int32_t timeout;
int32_t lun = atanlun;
u_int8_t status0, status1;
#ifdef ATA_STATIC_ID
atanlun++;
#endif
if (lun > MAXATA) {
printf("ata: unit out of range(%d)\n", lun);
return 0;
}
if (scp) {
printf("ata%d: unit already attached\n", lun);
return 0;
}
scp = malloc(sizeof(struct ata_softc), M_DEVBUF, M_NOWAIT);
if (scp == NULL) {
printf("ata%d: failed to allocate driver storage\n", lun);
return 0;
}
bzero(scp, sizeof(struct ata_softc));
scp->unit = *unit;
scp->lun = lun;
scp->ioaddr = ioaddr;
scp->altioaddr = altioaddr;
scp->active = ATA_IDLE;
#ifdef ATA_DEBUG
printf("ata%d: iobase=0x%04x altiobase=0x%04x\n",
scp->lun, scp->ioaddr, scp->altioaddr);
#endif
/* do we have any signs of ATA/ATAPI HW being present ? */
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(1);
status0 = inb(scp->ioaddr + ATA_STATUS);
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
DELAY(1);
status1 = inb(scp->ioaddr + ATA_STATUS);
if ((status0 & 0xf8) != 0xf8)
mask |= 0x01;
if ((status1 & 0xf8) != 0xf8)
mask |= 0x02;
#ifdef ATA_DEBUG
printf("ata%d: mask=%02x status0=%02x status1=%02x\n",
scp->lun, mask, status0, status1);
#endif
if (!mask) {
free(scp, M_DEVBUF);
return 0;
}
/* assert reset for devices and wait for completition */
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(1);
outb(scp->altioaddr, ATA_A_IDS | ATA_A_RESET);
DELAY(1000);
outb(scp->altioaddr, ATA_A_IDS);
DELAY(1000);
inb(scp->ioaddr + ATA_ERROR);
DELAY(1);
outb(scp->altioaddr, ATA_A_4BIT);
DELAY(1);
/* wait for BUSY to go inactive */
for (timeout = 0; timeout < 30000*10; timeout++) {
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
DELAY(1);
status0 = inb(scp->ioaddr + ATA_STATUS);
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_SLAVE);
DELAY(1);
status1 = inb(scp->ioaddr + ATA_STATUS);
if (mask == 0x01) /* wait for master only */
if (!(status0 & ATA_S_BSY))
break;
if (mask == 0x02) /* wait for slave only */
if (!(status1 & ATA_S_BSY))
break;
if (mask == 0x03) /* wait for both master & slave */
if (!(status0 & ATA_S_BSY) && !(status1 & ATA_S_BSY))
break;
DELAY(100);
}
if (status0 & ATA_S_BSY)
mask &= ~0x01;
if (status1 & ATA_S_BSY)
mask &= ~0x02;
#ifdef ATA_DEBUG
printf("ata%d: mask=%02x status0=%02x status1=%02x\n",
scp->lun, mask, status0, status1);
#endif
if (!mask) {
free(scp, M_DEVBUF);
return 0;
}
/*
* OK, we have at least one device on the chain,
* check for ATAPI signatures, if none check if its
* a good old ATA device.
*/
outb(scp->ioaddr + ATA_DRIVE, (ATA_D_IBM | ATA_MASTER));
DELAY(1);
if (inb(scp->ioaddr + ATA_CYL_LSB) == ATAPI_MAGIC_LSB &&
inb(scp->ioaddr + ATA_CYL_MSB) == ATAPI_MAGIC_MSB) {
scp->devices |= ATA_ATAPI_MASTER;
}
outb(scp->ioaddr + ATA_DRIVE, (ATA_D_IBM | ATA_SLAVE));
DELAY(1);
if (inb(scp->ioaddr + ATA_CYL_LSB) == ATAPI_MAGIC_LSB &&
inb(scp->ioaddr + ATA_CYL_MSB) == ATAPI_MAGIC_MSB) {
scp->devices |= ATA_ATAPI_SLAVE;
}
if (status0 != 0x00 && !(scp->devices & ATA_ATAPI_MASTER)) {
outb(scp->ioaddr + ATA_DRIVE, (ATA_D_IBM | ATA_MASTER));
DELAY(1);
outb(scp->ioaddr + ATA_ERROR, 0x58);
outb(scp->ioaddr + ATA_CYL_LSB, 0xa5);
if (inb(scp->ioaddr + ATA_ERROR) != 0x58 &&
inb(scp->ioaddr + ATA_CYL_LSB) == 0xa5) {
scp->devices |= ATA_ATA_MASTER;
}
}
if (status1 != 0x00 && !(scp->devices & ATA_ATAPI_SLAVE)) {
outb(scp->ioaddr + ATA_DRIVE, (ATA_D_IBM | ATA_SLAVE));
DELAY(1);
outb(scp->ioaddr + ATA_ERROR, 0x58);
outb(scp->ioaddr + ATA_CYL_LSB, 0xa5);
if (inb(scp->ioaddr + ATA_ERROR) != 0x58 &&
inb(scp->ioaddr + ATA_CYL_LSB) == 0xa5) {
scp->devices |= ATA_ATA_SLAVE;
}
}
#ifdef ATA_DEBUG
printf("ata%d: devices = 0x%x\n", scp->lun, scp->devices);
#endif
if (!scp->devices) {
free(scp, M_DEVBUF);
return 0;
}
bufq_init(&scp->ata_queue);
TAILQ_INIT(&scp->atapi_queue);
*unit = scp->lun;
scp->tag = tag;
if (bmaddr)
scp->bmaddr = bmaddr;
atadevices[scp->lun] = scp;
#ifndef ATA_STATIC_ID
atanlun++;
#endif
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | ATA_MASTER);
return ATA_IOSIZE;
}
static void
ataintr(int32_t unit)
{
struct ata_softc *scp;
struct atapi_request *atapi_request;
struct buf *ata_request;
u_int8_t status;
static int32_t intr_count = 0;
if (unit < 0 || unit > atanlun) {
printf("ataintr: unit %d unusable\n", unit);
return;
}
scp = atadevices[unit];
/* find & call the responsible driver to process this interrupt */
switch (scp->active) {
#if NATADISK > 0
case ATA_ACTIVE_ATA:
if ((ata_request = bufq_first(&scp->ata_queue)))
if (ad_interrupt(ata_request) == ATA_OP_CONTINUES)
return;
break;
#endif
case ATA_ACTIVE_ATAPI:
if ((atapi_request = TAILQ_FIRST(&scp->atapi_queue)))
if (atapi_interrupt(atapi_request) == ATA_OP_CONTINUES)
return;
break;
case ATA_WAIT_INTR:
wakeup((caddr_t)scp);
break;
case ATA_IGNORE_INTR:
break;
default:
case ATA_IDLE:
status = inb(scp->ioaddr + ATA_STATUS);
if (intr_count++ < 10)
printf("ata%d: unwanted interrupt %d status = %02x\n",
unit, intr_count, status);
return;
}
scp->active = ATA_IDLE;
ata_start(scp);
}
void
ata_start(struct ata_softc *scp)
{
struct buf *ata_request;
struct atapi_request *atapi_request;
#ifdef ATA_DEBUG
printf("ata_start: entered\n");
#endif
if (scp->active != ATA_IDLE) {
printf("ata: unwanted ata_start\n");
return;
}
#if NATADISK > 0
/* find & call the responsible driver if anything on ATA queue */
if ((ata_request = bufq_first(&scp->ata_queue))) {
scp->active = ATA_ACTIVE_ATA;
ad_transfer(ata_request);
#ifdef ATA_DEBUG
printf("ata_start: started ata, leaving\n");
#endif
return;
}
#endif
/* find & call the responsible driver if anything on ATAPI queue */
if ((atapi_request = TAILQ_FIRST(&scp->atapi_queue))) {
scp->active = ATA_ACTIVE_ATAPI;
atapi_transfer(atapi_request);
#ifdef ATA_DEBUG
printf("ata_start: started atapi, leaving\n");
#endif
return;
}
}
int32_t
ata_wait(struct ata_softc *scp, int32_t device, u_int8_t mask)
{
u_int8_t status;
u_int32_t timeout = 0;
while (timeout++ <= 500000) { /* timeout 5 secs */
status = inb(scp->ioaddr + ATA_STATUS);
/* if drive fails status, reselect the drive just to be sure */
if (status == 0xff) {
printf("ata%d: %s: no status, reselecting device\n",
scp->lun, device?"slave":"master");
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | device);
DELAY(1);
status = inb(scp->ioaddr + ATA_STATUS);
}
if (status == 0xff)
return -1;
scp->status = status;
if (!(status & ATA_S_BSY)) {
if (status & ATA_S_ERROR)
scp->error = inb(scp->ioaddr + ATA_ERROR);
if ((status & mask) == mask)
return (status & ATA_S_ERROR);
}
if (timeout > 1000)
DELAY(1000);
else
DELAY(10);
}
return -1;
}
int32_t
ata_command(struct ata_softc *scp, int32_t device, u_int32_t command,
u_int32_t cylinder, u_int32_t head, u_int32_t sector,
u_int32_t count, u_int32_t feature, int32_t flags)
{
#ifdef ATA_DEBUG
printf("ata_command: addr=%04x, device=%02x, cmd=%02x, c=%d, h=%d, s=%d, count=%d, flags=%02x\n", scp->ioaddr, device, command, cylinder, head, sector, count, flags);
#endif
/* ready to issue command ? */
if (ata_wait(scp, device, 0) < 0) {
printf("ata%d: %s: timeout waiting to give command s=%02x e=%02x\n",
scp->lun, device?"slave":"master", scp->status, scp->error);
}
outb(scp->ioaddr + ATA_FEATURE, feature);
outb(scp->ioaddr + ATA_CYL_LSB, cylinder);
outb(scp->ioaddr + ATA_CYL_MSB, cylinder >> 8);
outb(scp->ioaddr + ATA_DRIVE, ATA_D_IBM | device | head);
outb(scp->ioaddr + ATA_SECTOR, sector);
outb(scp->ioaddr + ATA_COUNT, count);
if (scp->active != ATA_IDLE && flags != ATA_IMMEDIATE)
printf("DANGER active=%d\n", scp->active);
switch (flags) {
case ATA_WAIT_INTR:
scp->active = ATA_WAIT_INTR;
outb(scp->ioaddr + ATA_CMD, command);
if (tsleep((caddr_t)scp, PRIBIO, "atacmd", 500)) {
printf("ata_command: timeout waiting for interrupt\n");
scp->active = ATA_IDLE;
return -1;
}
break;
case ATA_IGNORE_INTR:
scp->active = ATA_IGNORE_INTR;
outb(scp->ioaddr + ATA_CMD, command);
break;
case ATA_IMMEDIATE:
default:
outb(scp->ioaddr + ATA_CMD, command);
break;
}
#ifdef ATA_DEBUG
printf("ata_command: leaving\n");
#endif
return 0;
}
void
bswap(int8_t *buf, int32_t len)
{
u_int16_t *p = (u_int16_t*)(buf + len);
while (--p >= (u_int16_t*)buf)
*p = ntohs(*p);
}
void
btrim(int8_t *buf, int32_t len)
{
int8_t *p;
for (p = buf; p < buf+len; ++p)
if (!*p)
*p = ' ';
for (p = buf + len - 1; p >= buf && *p == ' '; --p)
*p = 0;
}
void
bpack(int8_t *src, int8_t *dst, int32_t len)
{
int32_t i, j, blank;
for (i = j = blank = 0 ; i < len-1; i++) {
if (blank && src[i] == ' ') continue;
if (blank && src[i] != ' ') {
dst[j++] = src[i];
blank = 0;
continue;
}
if (src[i] == ' ')
blank = 1;
dst[j++] = src[i];
}
dst[j] = 0x00;
}
#endif /* NATA > 0 */
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