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git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1414 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Greg Watson
2004-03-13 03:52:19 +00:00
parent 1f50e94d88
commit e54edf7a18
1 changed files with 558 additions and 109 deletions
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667
src/pc80/ide/ide.c
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@@ -1,42 +1,29 @@
#define BSY_SET_DURING_SPINUP 1 /* Derived from Etherboot 5.1 */
/*
* UBL, The Universal Talkware Boot Loader
* Copyright (C) 2000 Universal Talkware Inc.
* Copyright (C) 2002 Eric Biederman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
*/
#include <arch/io.h> #include <stdlib.h>
#include <console/console.h>
#include <string.h> #include <string.h>
#include <delay.h> #include <console/console.h>
#include <device/pci.h>
#include <pc80/ide.h>
#include <arch/io.h> #include <arch/io.h>
#include <pc80/ide.h>
#include <device/device.h>
#include <device/pci.h>
#include <delay.h>
#include <arch/byteorder.h>
#ifndef CONFIG_IDE_MAXBUS #define BSY_SET_DURING_SPINUP 1
#define CONFIG_IDE_MAXBUS 2
#endif
struct controller controller; static unsigned short ide_base[] = {
struct harddisk_info harddisk_info[NUM_HD]; IDE_BASE0,
extern uint32_t ide_base[CONFIG_IDE_MAXBUS]; IDE_BASE1,
IDE_BASE2,
IDE_BASE3,
0
};
static struct controller controllers[IDE_MAX_CONTROLLERS];
static struct harddisk_info harddisk_info[IDE_MAX_DRIVES];
static unsigned char ide_buffer[IDE_SECTOR_SIZE];
static int await_ide(int (*done)(struct controller *ctrl), static int await_ide(int (*done)(struct controller *ctrl),
struct controller *ctrl, unsigned long timeout) struct controller *ctrl, unsigned long timeout)
@@ -47,11 +34,13 @@ static int await_ide(int (*done)(struct controller *ctrl),
if (result) { if (result) {
return 0; return 0;
} }
if (timeout-- <= 0) { //poll_interruptions();
if (timeout-- <= 0) {
break; break;
} }
udelay(1000); /* Added to avoid spinning GRW */ udelay(1000); /* Added to avoid spinning GRW */
} }
printk_info("IDE time out\n");
return -1; return -1;
} }
@@ -64,6 +53,16 @@ static int not_bsy(struct controller *ctrl)
{ {
return !(inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY); return !(inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY);
} }
/* IDE drives assert BSY bit within 400 nsec when SRST is set.
* Use 2 msec since our tick is 1 msec */
#define IDE_RESET_PULSE 2
static int bsy(struct controller *ctrl)
{
return inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY;
}
#if !BSY_SET_DURING_SPINUP #if !BSY_SET_DURING_SPINUP
static int timeout(struct controller *ctrl) static int timeout(struct controller *ctrl)
{ {
@@ -71,26 +70,39 @@ static int timeout(struct controller *ctrl)
} }
#endif #endif
static void print_status(struct controller *ctrl)
{
printk_debug("IDE: status=%#x, err=%#x\n",
inb(IDE_REG_STATUS(ctrl)), inb(IDE_REG_ERROR(ctrl)));
}
static int ide_software_reset(struct controller *ctrl) static int ide_software_reset(struct controller *ctrl)
{ {
/* Wait a little bit in case this is immediately after /* Wait a little bit in case this is immediately after
* hardware reset. * hardware reset.
*/ */
udelay(2000); mdelay(2);
/* A software reset should not be delivered while the bsy bit /* A software reset should not be delivered while the bsy bit
* is set. If the bsy bit does not clear in a reasonable * is set. If the bsy bit does not clear in a reasonable
* amount of time give up. * amount of time give up.
*/ */
printk_debug("Waiting for ide%d to become ready for reset... ",
ctrl - controllers);
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) { if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
printk_debug("failed\n");
return -1; return -1;
} }
printk_debug("ok\n");
/* Disable Interrupts and reset the ide bus */ /* Disable Interrupts and reset the ide bus */
outb(IDE_CTRL_HD15 | IDE_CTRL_SRST | IDE_CTRL_NIEN, outb(IDE_CTRL_HD15 | IDE_CTRL_SRST | IDE_CTRL_NIEN,
IDE_REG_DEVICE_CONTROL(ctrl)); IDE_REG_DEVICE_CONTROL(ctrl));
udelay(5); /* If BSY bit is not asserted within 400ns, no device there */
if (await_ide(bsy, ctrl, IDE_RESET_PULSE) < 0) {
return -1;
}
outb(IDE_CTRL_HD15 | IDE_CTRL_NIEN, IDE_REG_DEVICE_CONTROL(ctrl)); outb(IDE_CTRL_HD15 | IDE_CTRL_NIEN, IDE_REG_DEVICE_CONTROL(ctrl));
udelay(2000); mdelay(2);
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) { if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
return -1; return -1;
} }
@@ -112,16 +124,18 @@ static void pio_set_registers(
* The linux ide code suggests 50ms is the right * The linux ide code suggests 50ms is the right
* amount of time to use here. * amount of time to use here.
*/ */
udelay(50000); mdelay(50);
} }
outb(cmd->feature, IDE_REG_FEATURE(ctrl)); outb(cmd->feature, IDE_REG_FEATURE(ctrl));
outb(cmd->sector_count2, IDE_REG_SECTOR_COUNT(ctrl)); if (cmd->command == IDE_CMD_READ_SECTORS_EXT) {
outb(cmd->sector_count2, IDE_REG_SECTOR_COUNT(ctrl));
outb(cmd->lba_low2, IDE_REG_LBA_LOW(ctrl));
outb(cmd->lba_mid2, IDE_REG_LBA_MID(ctrl));
outb(cmd->lba_high2, IDE_REG_LBA_HIGH(ctrl));
}
outb(cmd->sector_count, IDE_REG_SECTOR_COUNT(ctrl)); outb(cmd->sector_count, IDE_REG_SECTOR_COUNT(ctrl));
outb(cmd->lba_low2, IDE_REG_LBA_LOW(ctrl));
outb(cmd->lba_low, IDE_REG_LBA_LOW(ctrl)); outb(cmd->lba_low, IDE_REG_LBA_LOW(ctrl));
outb(cmd->lba_mid2, IDE_REG_LBA_MID(ctrl));
outb(cmd->lba_mid, IDE_REG_LBA_MID(ctrl)); outb(cmd->lba_mid, IDE_REG_LBA_MID(ctrl));
outb(cmd->lba_high2, IDE_REG_LBA_HIGH(ctrl));
outb(cmd->lba_high, IDE_REG_LBA_HIGH(ctrl)); outb(cmd->lba_high, IDE_REG_LBA_HIGH(ctrl));
outb(cmd->command, IDE_REG_COMMAND(ctrl)); outb(cmd->command, IDE_REG_COMMAND(ctrl));
} }
@@ -135,6 +149,7 @@ static int pio_non_data(struct controller *ctrl, const struct ide_pio_command *c
} }
pio_set_registers(ctrl, cmd); pio_set_registers(ctrl, cmd);
udelay(1);
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) { if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
return -1; return -1;
} }
@@ -142,7 +157,8 @@ static int pio_non_data(struct controller *ctrl, const struct ide_pio_command *c
return 0; return 0;
} }
static int pio_data_in(struct controller *ctrl, const struct ide_pio_command *cmd, static int pio_data_in(struct controller *ctrl,
const struct ide_pio_command *cmd,
void *buffer, size_t bytes) void *buffer, size_t bytes)
{ {
unsigned int status; unsigned int status;
@@ -155,16 +171,125 @@ static int pio_data_in(struct controller *ctrl, const struct ide_pio_command *cm
/* How do I tell if INTRQ is asserted? */ /* How do I tell if INTRQ is asserted? */
pio_set_registers(ctrl, cmd); pio_set_registers(ctrl, cmd);
udelay(1);
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) { if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
return -1; return -1;
} }
status = inb(IDE_REG_STATUS(ctrl)); status = inb(IDE_REG_STATUS(ctrl));
if (!(status & IDE_STATUS_DRQ)) { if (!(status & IDE_STATUS_DRQ)) {
print_status(ctrl);
return -1; return -1;
} }
insw(IDE_REG_DATA(ctrl), buffer, bytes/2); insw(IDE_REG_DATA(ctrl), buffer, bytes/2);
status = inb(IDE_REG_STATUS(ctrl)); status = inb(IDE_REG_STATUS(ctrl));
if (status & IDE_STATUS_ERR) { if (status & IDE_STATUS_DRQ) {
print_status(ctrl);
return -1;
}
return 0;
}
#ifdef __BIG_ENDIAN
static int pio_data_in_sw(struct controller *ctrl,
const struct ide_pio_command *cmd,
void *buffer, size_t bytes)
{
unsigned int status;
/* FIXME handle commands with multiple blocks */
/* Wait until the busy bit is clear */
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
return -1;
}
/* How do I tell if INTRQ is asserted? */
pio_set_registers(ctrl, cmd);
udelay(1);
if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
return -1;
}
status = inb(IDE_REG_STATUS(ctrl));
if (!(status & IDE_STATUS_DRQ)) {
print_status(ctrl);
return -1;
}
insw_ns(IDE_REG_DATA(ctrl), buffer, bytes/2);
status = inb(IDE_REG_STATUS(ctrl));
if (status & IDE_STATUS_DRQ) {
print_status(ctrl);
return -1;
}
return 0;
}
#endif /* __BIG_ENDIAN */
static int pio_packet(struct harddisk_info *info, int in,
const void *packet, int packet_len,
void *buffer, int buffer_len)
{
unsigned int status;
struct ide_pio_command cmd;
memset(&cmd, 0, sizeof(cmd));
/* Wait until the busy bit is clear */
if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
return -1;
}
/* Issue a PACKET command */
cmd.lba_mid = (uint8_t) buffer_len;
cmd.lba_high = (uint8_t) (buffer_len >> 8);
cmd.device = IDE_DH_DEFAULT | info->slave;
cmd.command = IDE_CMD_PACKET;
pio_set_registers(info->ctrl, &cmd);
udelay(1);
if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
return -1;
}
status = inb(IDE_REG_STATUS(info->ctrl));
if (!(status & IDE_STATUS_DRQ)) {
printk_debug("no drq after PACKET\n");
print_status(info->ctrl);
return -1;
}
/* Send the packet */
#ifdef __BIG_ENDIAN
outsw_ns(IDE_REG_DATA(info->ctrl), packet, packet_len/2);
#else /* __BIG_ENDIAN */
outsw(IDE_REG_DATA(info->ctrl), packet, packet_len/2);
#endif /* __BIG_ENDIAN */
if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
return -1;
}
status = inb(IDE_REG_STATUS(info->ctrl));
if (buffer_len == 0) {
if (status & IDE_STATUS_DRQ) {
printk_debug("drq after non-data command\n");
print_status(info->ctrl);
return -1;
}
return 0;
}
if (!(status & IDE_STATUS_DRQ)) {
printk_debug("no drq after sending packet\n");
print_status(info->ctrl);
return -1;
}
#ifdef __BIG_ENDIAN
insw_ns(IDE_REG_DATA(info->ctrl), buffer, buffer_len/2);
#else /* __BIG_ENDIAN */
insw(IDE_REG_DATA(info->ctrl), buffer, buffer_len/2);
#endif /* __BIG_ENDIAN */
status = inb(IDE_REG_STATUS(info->ctrl));
if (status & IDE_STATUS_DRQ) {
printk_debug("drq after insw\n");
print_status(info->ctrl);
return -1; return -1;
} }
return 0; return 0;
@@ -181,6 +306,8 @@ static inline int ide_read_sector_chs(
memset(&cmd, 0, sizeof(cmd)); memset(&cmd, 0, sizeof(cmd));
cmd.sector_count = 1; cmd.sector_count = 1;
//printk_debug("ide_read_sector_chs: sector= %ld.\n",sector);
track = sector / info->sectors_per_track; track = sector / info->sectors_per_track;
/* Sector number */ /* Sector number */
offset = 1 + (sector % info->sectors_per_track); offset = 1 + (sector % info->sectors_per_track);
@@ -193,7 +320,11 @@ static inline int ide_read_sector_chs(
info->slave | info->slave |
IDE_DH_CHS; IDE_DH_CHS;
cmd.command = IDE_CMD_READ_SECTORS; cmd.command = IDE_CMD_READ_SECTORS;
#ifdef __BIG_ENDIAN
return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#else /* __BIG_ENDIAN */
return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#endif /* __BIG_ENDIAN */
} }
static inline int ide_read_sector_lba( static inline int ide_read_sector_lba(
@@ -211,7 +342,12 @@ static inline int ide_read_sector_lba(
info->slave | info->slave |
IDE_DH_LBA; IDE_DH_LBA;
cmd.command = IDE_CMD_READ_SECTORS; cmd.command = IDE_CMD_READ_SECTORS;
//printk_debug("%s: sector= %ld, device command= 0x%x.\n",__FUNCTION__,(unsigned long) sector, cmd.device);
#ifdef __BIG_ENDIAN
return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#else /* __BIG_ENDIAN */
return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#endif /* __BIG_ENDIAN */
} }
static inline int ide_read_sector_lba48( static inline int ide_read_sector_lba48(
@@ -219,6 +355,7 @@ static inline int ide_read_sector_lba48(
{ {
struct ide_pio_command cmd; struct ide_pio_command cmd;
memset(&cmd, 0, sizeof(cmd)); memset(&cmd, 0, sizeof(cmd));
//printk_debug("ide_read_sector_lba48: sector= %ld.\n",(unsigned long) sector);
cmd.sector_count = 1; cmd.sector_count = 1;
cmd.lba_low = sector & 0xff; cmd.lba_low = sector & 0xff;
@@ -229,31 +366,79 @@ static inline int ide_read_sector_lba48(
cmd.lba_high2 = (sector >> 40) & 0xff; cmd.lba_high2 = (sector >> 40) & 0xff;
cmd.device = info->slave | IDE_DH_LBA; cmd.device = info->slave | IDE_DH_LBA;
cmd.command = IDE_CMD_READ_SECTORS_EXT; cmd.command = IDE_CMD_READ_SECTORS_EXT;
#ifdef __BIG_ENDIAN
return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#else /* __BIG_ENDIAN */
return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
#endif /* __BIG_ENDIAN */
} }
int ide_read(int driveno, unsigned int sector, void *buf) static inline int ide_read_sector_packet(
struct harddisk_info *info, void *buffer, sector_t sector)
{ {
struct harddisk_info *info; char packet[12];
static uint8_t cdbuffer[CDROM_SECTOR_SIZE];
static struct harddisk_info *last_disk = 0;
static sector_t last_sector = (sector_t) -1;
uint8_t *buf;
uint32_t hw_sector;
//printk_debug("sector=%Ld\n", sector);
if (info->hw_sector_size == CDROM_SECTOR_SIZE) {
buf = cdbuffer;
hw_sector = sector >> 2;
} else {
buf = buffer;
hw_sector = sector;
}
if (buf==buffer || info != last_disk || hw_sector != last_sector) {
//printk_debug("hw_sector=%u\n", hw_sector);
memset(packet, 0, sizeof packet);
packet[0] = 0x28; /* READ */
packet[2] = hw_sector >> 24;
packet[3] = hw_sector >> 16;
packet[4] = hw_sector >> 8;
packet[5] = hw_sector >> 0;
packet[7] = 0;
packet[8] = 1; /* length */
if (pio_packet(info, 1, packet, sizeof packet,
buf, info->hw_sector_size) != 0) {
printk_debug("read error\n");
return -1;
}
last_disk = info;
last_sector = hw_sector;
}
if (buf != buffer)
memcpy(buffer, &cdbuffer[(sector & 3) << 9], IDE_SECTOR_SIZE);
return 0;
}
int ide_read(int drive, sector_t sector, void *buffer)
{
struct harddisk_info *info = &harddisk_info[drive];
int result; int result;
if (driveno > NUM_HD-1) //printk_debug("drive=%d, sector=%ld\n",drive,(unsigned long) sector);
return -1;
info = &harddisk_info[driveno];
/* Report the buffer is empty */ /* Report the buffer is empty */
if (sector > info->sectors) { if (sector > info->sectors) {
return -1; return -1;
} }
if (info->address_mode == ADDRESS_MODE_CHS) { if (info->address_mode == ADDRESS_MODE_CHS) {
result = ide_read_sector_chs(info, buf, sector); result = ide_read_sector_chs(info, buffer, sector);
} }
else if (info->address_mode == ADDRESS_MODE_LBA) { else if (info->address_mode == ADDRESS_MODE_LBA) {
result = ide_read_sector_lba(info, buf, sector); result = ide_read_sector_lba(info, buffer, sector);
} }
else if (info->address_mode == ADDRESS_MODE_LBA48) { else if (info->address_mode == ADDRESS_MODE_LBA48) {
result = ide_read_sector_lba48(info, buf, sector); result = ide_read_sector_lba48(info, buffer, sector);
}
else if (info->address_mode == ADDRESS_MODE_PACKET) {
result = ide_read_sector_packet(info, buffer, sector);
} }
else { else {
result = -1; result = -1;
@@ -261,11 +446,11 @@ int ide_read(int driveno, unsigned int sector, void *buf)
return result; return result;
} }
static int init_drive(struct harddisk_info *info, struct controller *ctrl, int slave, int drive) static int init_drive(struct harddisk_info *info, struct controller *ctrl,
int slave, int drive, unsigned char *buffer, int ident_command)
{ {
uint16_t* drive_info; uint16_t* drive_info;
struct ide_pio_command cmd; struct ide_pio_command cmd;
unsigned char disk_buffer[DISK_BUFFER_SIZE];
int i; int i;
info->ctrl = ctrl; info->ctrl = ctrl;
@@ -276,15 +461,16 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
info->sectors = 0ul; info->sectors = 0ul;
info->drive_exists = 0; info->drive_exists = 0;
info->slave_absent = 0; info->slave_absent = 0;
info->removable = 0;
info->hw_sector_size = IDE_SECTOR_SIZE;
info->slave = slave?IDE_DH_SLAVE: IDE_DH_MASTER; info->slave = slave?IDE_DH_SLAVE: IDE_DH_MASTER;
info->basedrive = drive & 1;
printk_info("Testing for disk %d\n", drive); printk_debug("Testing for hd%c\n", 'a'+drive);
/* Select the drive that we are testing */ /* Select the drive that we are testing */
outb(IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave, outb(IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave,
IDE_REG_DEVICE(ctrl)); IDE_REG_DEVICE(ctrl));
udelay(50000); mdelay(50);
/* Test to see if the drive registers exist, /* Test to see if the drive registers exist,
* In many cases this quickly rules out a missing drive. * In many cases this quickly rules out a missing drive.
@@ -305,22 +491,19 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
return 1; return 1;
} }
} }
printk_debug("Probing for hd%c\n", 'a'+drive);
printk_info("Probing for disk %d\n", drive);
memset(&cmd, 0, sizeof(cmd)); memset(&cmd, 0, sizeof(cmd));
cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave; cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave;
cmd.command = IDE_CMD_IDENTIFY_DEVICE; cmd.command = ident_command;
if (pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) {
if (pio_data_in(ctrl, &cmd, disk_buffer, IDE_SECTOR_SIZE) < 0) {
/* Well, if that command didn't work, we probably don't have drive. */ /* Well, if that command didn't work, we probably don't have drive. */
return 1; return 1;
} }
/* Now suck the data out */ /* Now suck the data out */
drive_info = (uint16_t *)disk_buffer; drive_info = (uint16_t *)buffer;
if (drive_info[2] == 0x37C8) { if (drive_info[2] == 0x37C8) {
/* If the response is incomplete spin up the drive... */ /* If the response is incomplete spin up the drive... */
memset(&cmd, 0, sizeof(cmd)); memset(&cmd, 0, sizeof(cmd));
@@ -338,8 +521,8 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
memset(&cmd, 0, sizeof(cmd)); memset(&cmd, 0, sizeof(cmd));
cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS |
info->slave; info->slave;
cmd.command = IDE_CMD_IDENTIFY_DEVICE; cmd.command = ident_command;
if(pio_data_in(ctrl, &cmd, disk_buffer, IDE_SECTOR_SIZE) < 0) { if (pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) {
/* If the command didn't work give up on the drive. */ /* If the command didn't work give up on the drive. */
return 1; return 1;
} }
@@ -360,19 +543,23 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
info->drive_exists = 1; info->drive_exists = 1;
/* See if LBA is supported */ /* See if LBA is supported */
if (drive_info[49] & (1 << 9)) { if (ident_command == IDE_CMD_IDENTIFY_PACKET_DEVICE) {
info->address_mode = ADDRESS_MODE_PACKET;
info->removable = 1; /* XXX */
} else if (drive_info[49] & (1 << 9)) {
info->address_mode = ADDRESS_MODE_LBA; info->address_mode = ADDRESS_MODE_LBA;
info->sectors = (drive_info[61] << 16) | (drive_info[60]); info->sectors = (drive_info[61] << 16) | (drive_info[60]);
printk_debug("LBA mode, sectors=%Ld\n", info->sectors);
/* Enable LBA48 mode if it is present */ /* Enable LBA48 mode if it is present */
if (drive_info[83] & (1 <<10)) { if (drive_info[83] & (1 <<10)) {
/* Should LBA48 depend on LBA? */ /* Should LBA48 depend on LBA? */
printk_info("LBA48 mode\n");
info->address_mode = ADDRESS_MODE_LBA48; info->address_mode = ADDRESS_MODE_LBA48;
info->sectors = info->sectors =
(((sector_t)drive_info[103]) << 48) | (((sector_t)drive_info[103]) << 48) |
(((sector_t)drive_info[102]) << 32) | (((sector_t)drive_info[102]) << 32) |
(((sector_t)drive_info[101]) << 16) | (((sector_t)drive_info[101]) << 16) |
(((sector_t)drive_info[100]) << 0); (((sector_t)drive_info[100]) << 0);
printk_debug("LBA48 mode, sectors=%Ld\n", info->sectors);
} }
} else { } else {
info->address_mode = ADDRESS_MODE_CHS; info->address_mode = ADDRESS_MODE_CHS;
@@ -383,16 +570,17 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
info->sectors_per_track * info->sectors_per_track *
info->heads * info->heads *
info->cylinders; info->cylinders;
printk_info("%s sectors_per_track=[%d], heads=[%d], cylinders=[%d]\n", printk_debug("CHS mode, sectors_per_track=[%d], heads=[%d], cylinders=[%d]\n",
__FUNCTION__,
info->sectors_per_track, info->sectors_per_track,
info->heads, info->heads,
info->cylinders); info->cylinders);
printk_debug("sectors=%Ld\n", info->sectors);
} }
/* See if we have a slave */ /* See if we have a slave */
if (!info->slave && (((drive_info[93] >> 14) & 3) == 1)) { if (!info->slave && (((drive_info[93] >> 14) & 3) == 1)) {
info->slave_absent = !(drive_info[93] & (1 << 5)); info->slave_absent = !(drive_info[93] & (1 << 5));
} }
/* See if we need to put the device in CFA power mode 1 */ /* See if we need to put the device in CFA power mode 1 */
if ((drive_info[160] & ((1 << 15) | (1 << 13)| (1 << 12))) == if ((drive_info[160] & ((1 << 15) | (1 << 13)| (1 << 12))) ==
((1 << 15) | (1 << 13)| (1 << 12))) { ((1 << 15) | (1 << 13)| (1 << 12))) {
@@ -407,16 +595,95 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
return 1; return 1;
} }
} }
printk_info("disk%d %dk cap: %hx\n",
info->basedrive, /* Some extra steps for older drives.. */
(unsigned long)(info->sectors >> 1), if (info->address_mode != ADDRESS_MODE_PACKET) {
drive_info[49]); /* Initialize drive parameters
* This is an obsolete command (disappeared as of ATA-6)
* but old drives need it before accessing media. */
memset(&cmd, 0, sizeof(cmd));
cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(drive_info[3] - 1)
| info->slave;
cmd.sector_count = drive_info[6];
cmd.command = IDE_CMD_INITIALIZE_DRIVE_PARAMETERS;
printk_debug("Init device params... ");
if (pio_non_data(ctrl, &cmd) < 0)
printk_debug("failed (ok for newer drives)\n");
else
printk_debug("ok\n");
}
printk_info("hd%c: %s",
'a'+drive,
(info->address_mode==ADDRESS_MODE_CHS) ? "CHS" :
(info->address_mode==ADDRESS_MODE_LBA) ? "LBA" :
(info->address_mode==ADDRESS_MODE_LBA48) ? "LBA48" :
(info->address_mode==ADDRESS_MODE_PACKET) ? "ATAPI" : "???");
if (info->sectors > (10LL*1000*1000*1000/512))
printk_info(" %uGB", (unsigned) (info->sectors / (1000*1000*1000/512)));
else if (info->sectors > (10*1000*1000/512))
printk_info(" %uMB", (unsigned) (info->sectors / (1000*1000/512)));
else if (info->sectors > 0)
printk_info(" %uKB", (unsigned) (info->sectors / 2));
printk_info(": %s\n", info->model_number);
return 0; return 0;
} }
static int init_controller(struct controller *ctrl, int num) /* Experimental floating bus detection
* As Eric mentions, we get stuck when the bus has no drive
* and floating high. To avoid this, try some heuristics.
* This is based on a paper on Phoenix website. --ts1 */
static int ide_bus_floating(struct controller *ctrl)
{
unsigned long timeout;
unsigned char status;
/* Test 1: if status reads 0xff, probably no device is present
* on the bus. Repeat this for 20msec. */
timeout = 20;
status = 0;
do {
/* Take logical OR to avoid chattering */
status |= inb(IDE_REG_STATUS(ctrl));
/* If it makes 0xff, it's possible to be floating,
* do test2 to ensure. */
if (status == 0xff)
goto test2;
/* If BSY bit is not set, it's harmless to continue probing. */
if ((status & IDE_STATUS_BSY) == 0)
return 0;
udelay(1000);
} while (timeout > 0);
/* Timed out. Logical ORed status didn't make 0xFF.
* We have something there. */
return 0;
test2:
/* Test 2: write something to registers, then read back and
* compare. Note that ATA spec inhibits this while BSY is set,
* but for many drives this works. This is a confirmation step anyway.
*/
outb(0xaa, ctrl->cmd_base + 2);
outb(0x55, ctrl->cmd_base + 3);
outb(0xff, ctrl->cmd_base + 4);
if (inb(ctrl->cmd_base+2) == 0xaa
&& inb(ctrl->cmd_base+3) == 0x55
&& inb(ctrl->cmd_base+4) == 0xff) {
/* We have some registers there.
* Though this does not mean it is not a NIC or something... */
return 0;
}
/* Status port is 0xFF, and other registers are not there.
* Most certainly this bus is floating. */
printk_info("Detected floating bus\n");
return 1;
}
static int init_controller(struct controller *ctrl, int drive, unsigned char *buffer)
{ {
int drive;
struct harddisk_info *info; struct harddisk_info *info;
/* Put the drives ide channel in a know state and wait /* Put the drives ide channel in a know state and wait
@@ -451,6 +718,10 @@ static int init_controller(struct controller *ctrl, int num)
return -1; return -1;
} }
#endif #endif
/* ts1: Try some heuristics to avoid waiting for floating bus */
if (ide_bus_floating(ctrl))
return -1;
if (ide_software_reset(ctrl) < 0) { if (ide_software_reset(ctrl) < 0) {
return -1; return -1;
} }
@@ -465,51 +736,229 @@ static int init_controller(struct controller *ctrl, int num)
*/ */
/* Now initialize the individual drives */ /* Now initialize the individual drives */
drive = num * 2; /* 2 drives per controller */
info = &harddisk_info[drive]; info = &harddisk_info[drive];
init_drive(info, ctrl, 0, drive); init_drive(info, ctrl, 0, drive, buffer, IDE_CMD_IDENTIFY_DEVICE);
if (!info->drive_exists)
/* at the moment this only works for the first drive */ init_drive(info, ctrl, 0, drive, buffer,
#if 0 IDE_CMD_IDENTIFY_PACKET_DEVICE);
if (info->drive_exists && !info->slave_absent) { if (info->drive_exists && !info->slave_absent) {
drive++; drive++;
info++; info++;
init_drive(info, ctrl, 1, drive); init_drive(info, ctrl, 1, drive, buffer,
IDE_CMD_IDENTIFY_DEVICE);
if (!info->drive_exists)
init_drive(info, ctrl, 1, drive, buffer,
IDE_CMD_IDENTIFY_PACKET_DEVICE);
} }
#endif
return 0; return 0;
} }
int ide_init(void) static int
atapi_request_sense(struct harddisk_info *info, uint8_t *asc, uint8_t *ascq)
{ {
int index; uint8_t packet[12];
int drives = 0; uint8_t buf[18];
int i;
/* Intialize the harddisk_info structures */ memset(packet, 0, sizeof packet);
memset(harddisk_info, 0, sizeof(harddisk_info)); packet[0] = 0x03; /* REQUEST SENSE */
packet[4] = sizeof buf;
if (pio_packet(info, 1, packet, sizeof packet, buf, sizeof buf) != 0)
return -1;
for(index = 0; index < CONFIG_IDE_MAXBUS; index++) { for (i = 0; i < sizeof buf; i++)
/* IDE normal pci mode */ printk_debug("%02x ", buf[i]);
uint32_t cmd_base, ctrl_base; printk_debug("\n");
cmd_base = ide_base[index];
ctrl_base = cmd_base + IDE_REG_EXTENDED_OFFSET;
controller.cmd_base = (cmd_base & ~3);
controller.ctrl_base = (ctrl_base & ~3);
printk_info("init_controller %d at (%x, %x)\n", index, controller.cmd_base, controller.ctrl_base); if (asc)
*asc = buf[12];
if (ascq)
*ascq = buf[13];
return 0;
}
if (init_controller(&controller, index) < 0) { static int atapi_detect_medium(struct harddisk_info *info)
/* nothing behind the controller */ {
continue; uint8_t packet[12];
uint8_t buf[8];
uint32_t block_len, sectors;
unsigned long timeout;
uint8_t asc, ascq;
int in_progress;
memset(packet, 0, sizeof packet);
packet[0] = 0x25; /* READ CAPACITY */
/* Retry READ CAPACITY for 5 seconds unless MEDIUM NOT PRESENT
* is reported by the drive. If the drive reports "IN PROGRESS",
* 30 seconds is added. */
timeout = 5000;
in_progress = 0;
while (timeout > 0) {
if (pio_packet(info, 1, packet, sizeof packet, buf, sizeof buf)
== 0)
goto ok;
if (atapi_request_sense(info, &asc, &ascq) == 0) {
if (asc == 0x3a) { /* MEDIUM NOT PRESENT */
printk_debug("Device reports MEDIUM NOT PRESENT\n");
return -1;
}
if (asc == 0x04 && ascq == 0x01 && !in_progress) {
/* IN PROGRESS OF BECOMING READY */
printk_info("Waiting for drive to detect "
"the medium... ");
/* Allow 30 seconds more */
timeout = 30000;
in_progress = 1;
}
} }
drives++;
/* udelay(1000);
* break here to avoid lengthy timeout probing for }
* disks on second controller printk_debug("read capacity failed\n");
*/ return -1;
break; ok:
block_len = (uint32_t) buf[4] << 24
| (uint32_t) buf[5] << 16
| (uint32_t) buf[6] << 8
| (uint32_t) buf[7] << 0;
printk_debug("block_len=%u\n", block_len);
if (block_len != IDE_SECTOR_SIZE && block_len != CDROM_SECTOR_SIZE) {
printk_info("Unsupported sector size %u\n", block_len);
return -1;
}
info->hw_sector_size = block_len;
sectors = (uint32_t) buf[0] << 24
| (uint32_t) buf[1] << 16
| (uint32_t) buf[2] << 8
| (uint32_t) buf[3] << 0;
printk_debug("sectors=%u\n", sectors);
if (info->hw_sector_size == CDROM_SECTOR_SIZE)
sectors <<= 2; /* # of sectors in 512-byte "soft" sector */
if (sectors != info->sectors)
printk_info("%uMB medium detected\n", sectors>>(20-9));
info->sectors = sectors;
return 0;
}
static int detect_medium(struct harddisk_info *info)
{
if (info->address_mode == ADDRESS_MODE_PACKET) {
if (atapi_detect_medium(info) != 0)
return -1;
} else {
printk_debug("not implemented for non-ATAPI device\n");
return -1;
}
return 0;
}
static int find_ide_controller_compat(struct controller *ctrl, int index)
{
if (index >= IDE_MAX_CONTROLLERS)
return -1;
ctrl->cmd_base = ide_base[index];
ctrl->ctrl_base = ide_base[index] + IDE_REG_EXTENDED_OFFSET;
return 0;
}
static int find_ide_controller(struct controller *ctrl, int ctrl_index)
{
int pci_index;
struct device *dev = 0;
unsigned int mask;
unsigned int prog_if;
/* A PCI IDE controller has two channels (pri, sec) */
pci_index = ctrl_index >> 1;
for (;;) {
/* Find a IDE storage class device */
dev = dev_find_class(0x010100, dev);
if (!dev) {
printk_debug("PCI IDE #%d not found\n", pci_index);
return -1;
}
if (pci_index-- == 0)
break;
} }
return drives > 0 ? 0 : -1; prog_if = dev->class & 0xff;
printk_debug("found PCI IDE controller %04x:%04x prog_if=%#x\n",
dev->vendor, dev->device, prog_if);
/* See how this controller is configured */
mask = (ctrl_index & 1) ? 4 : 1;
printk_debug("%s channel: ", (ctrl_index & 1) ? "secodary" : "primary");
if (prog_if & mask) {
printk_debug("native PCI mode\n");
if ((ctrl_index & 1) == 0) {
/* Primary channel */
ctrl->cmd_base = pci_read_config32(dev, PCI_BASE_ADDRESS_0);
ctrl->ctrl_base = pci_read_config32(dev, PCI_BASE_ADDRESS_1);
} else {
/* Secondary channel */
ctrl->cmd_base = pci_read_config32(dev, PCI_BASE_ADDRESS_2);
ctrl->ctrl_base = pci_read_config32(dev, PCI_BASE_ADDRESS_3);
}
ctrl->cmd_base &= ~3;
ctrl->ctrl_base &= ~3;
} else {
printk_debug("compatibility mode\n");
if (find_ide_controller_compat(ctrl, ctrl_index) != 0)
return -1;
}
printk_debug("cmd_base=%#x ctrl_base=%#x\n", ctrl->cmd_base, ctrl->ctrl_base);
return 0;
} }
int ide_probe(int drive)
{
struct controller *ctrl;
int ctrl_index;
struct harddisk_info *info;
if (drive >= IDE_MAX_DRIVES) {
printk_info("Unsupported drive number\n");
return -1;
}
/* A controller has two drives (master, slave) */
ctrl_index = drive >> 1;
ctrl = &controllers[ctrl_index];
if (ctrl->cmd_base == 0) {
if (find_ide_controller(ctrl, ctrl_index) != 0) {
printk_info("IDE channel %d not found\n", ctrl_index);
return -1;
}
if (init_controller(ctrl, drive & ~1, ide_buffer) != 0) {
printk_info("No drive detected on IDE channel %d\n",
ctrl_index);
return -1;
}
}
info = &harddisk_info[drive];
if (!info->drive_exists) {
printk_info("Drive %d does not exist\n", drive);
return -1;
}
if (info->removable) {
if (detect_medium(info) != 0) {
printk_info("Media detection failed\n");
return -1;
}
}
return 0;
}
/* vim:set sts=8 sw=8: */