from filo
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1414 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Greg Watson
parent
1f50e94d88
commit
e54edf7a18
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@ -1,42 +1,29 @@
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#define BSY_SET_DURING_SPINUP 1
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/*
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* UBL, The Universal Talkware Boot Loader
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* Copyright (C) 2000 Universal Talkware Inc.
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* Copyright (C) 2002 Eric Biederman
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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*/
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/* Derived from Etherboot 5.1 */
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#include <arch/io.h>
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#include <console/console.h>
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#include <stdlib.h>
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#include <string.h>
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#include <delay.h>
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#include <device/pci.h>
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#include <pc80/ide.h>
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#include <console/console.h>
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#include <arch/io.h>
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#include <pc80/ide.h>
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#include <device/device.h>
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#include <device/pci.h>
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#include <delay.h>
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#include <arch/byteorder.h>
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#ifndef CONFIG_IDE_MAXBUS
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#define CONFIG_IDE_MAXBUS 2
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#endif
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#define BSY_SET_DURING_SPINUP 1
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struct controller controller;
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struct harddisk_info harddisk_info[NUM_HD];
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extern uint32_t ide_base[CONFIG_IDE_MAXBUS];
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static unsigned short ide_base[] = {
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IDE_BASE0,
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IDE_BASE1,
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IDE_BASE2,
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IDE_BASE3,
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0
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};
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static struct controller controllers[IDE_MAX_CONTROLLERS];
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static struct harddisk_info harddisk_info[IDE_MAX_DRIVES];
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static unsigned char ide_buffer[IDE_SECTOR_SIZE];
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static int await_ide(int (*done)(struct controller *ctrl),
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struct controller *ctrl, unsigned long timeout)
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@ -47,11 +34,13 @@ static int await_ide(int (*done)(struct controller *ctrl),
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if (result) {
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return 0;
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}
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//poll_interruptions();
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if (timeout-- <= 0) {
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break;
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}
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udelay(1000); /* Added to avoid spinning GRW */
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}
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printk_info("IDE time out\n");
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return -1;
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}
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@ -64,6 +53,16 @@ static int not_bsy(struct controller *ctrl)
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{
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return !(inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY);
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}
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/* IDE drives assert BSY bit within 400 nsec when SRST is set.
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* Use 2 msec since our tick is 1 msec */
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#define IDE_RESET_PULSE 2
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static int bsy(struct controller *ctrl)
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{
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return inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY;
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}
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#if !BSY_SET_DURING_SPINUP
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static int timeout(struct controller *ctrl)
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{
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@ -71,26 +70,39 @@ static int timeout(struct controller *ctrl)
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}
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#endif
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static void print_status(struct controller *ctrl)
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{
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printk_debug("IDE: status=%#x, err=%#x\n",
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inb(IDE_REG_STATUS(ctrl)), inb(IDE_REG_ERROR(ctrl)));
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}
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static int ide_software_reset(struct controller *ctrl)
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{
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/* Wait a little bit in case this is immediately after
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* hardware reset.
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*/
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udelay(2000);
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mdelay(2);
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/* A software reset should not be delivered while the bsy bit
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* is set. If the bsy bit does not clear in a reasonable
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* amount of time give up.
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*/
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printk_debug("Waiting for ide%d to become ready for reset... ",
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ctrl - controllers);
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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printk_debug("failed\n");
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return -1;
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}
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printk_debug("ok\n");
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/* Disable Interrupts and reset the ide bus */
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outb(IDE_CTRL_HD15 | IDE_CTRL_SRST | IDE_CTRL_NIEN,
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IDE_REG_DEVICE_CONTROL(ctrl));
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udelay(5);
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/* If BSY bit is not asserted within 400ns, no device there */
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if (await_ide(bsy, ctrl, IDE_RESET_PULSE) < 0) {
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return -1;
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}
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outb(IDE_CTRL_HD15 | IDE_CTRL_NIEN, IDE_REG_DEVICE_CONTROL(ctrl));
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udelay(2000);
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mdelay(2);
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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@ -112,16 +124,18 @@ static void pio_set_registers(
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* The linux ide code suggests 50ms is the right
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* amount of time to use here.
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*/
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udelay(50000);
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mdelay(50);
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}
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outb(cmd->feature, IDE_REG_FEATURE(ctrl));
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if (cmd->command == IDE_CMD_READ_SECTORS_EXT) {
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outb(cmd->sector_count2, IDE_REG_SECTOR_COUNT(ctrl));
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outb(cmd->sector_count, IDE_REG_SECTOR_COUNT(ctrl));
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outb(cmd->lba_low2, IDE_REG_LBA_LOW(ctrl));
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outb(cmd->lba_low, IDE_REG_LBA_LOW(ctrl));
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outb(cmd->lba_mid2, IDE_REG_LBA_MID(ctrl));
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outb(cmd->lba_mid, IDE_REG_LBA_MID(ctrl));
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outb(cmd->lba_high2, IDE_REG_LBA_HIGH(ctrl));
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}
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outb(cmd->sector_count, IDE_REG_SECTOR_COUNT(ctrl));
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outb(cmd->lba_low, IDE_REG_LBA_LOW(ctrl));
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outb(cmd->lba_mid, IDE_REG_LBA_MID(ctrl));
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outb(cmd->lba_high, IDE_REG_LBA_HIGH(ctrl));
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outb(cmd->command, IDE_REG_COMMAND(ctrl));
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}
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@ -135,6 +149,7 @@ static int pio_non_data(struct controller *ctrl, const struct ide_pio_command *c
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}
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pio_set_registers(ctrl, cmd);
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udelay(1);
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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@ -142,7 +157,8 @@ static int pio_non_data(struct controller *ctrl, const struct ide_pio_command *c
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return 0;
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}
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static int pio_data_in(struct controller *ctrl, const struct ide_pio_command *cmd,
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static int pio_data_in(struct controller *ctrl,
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const struct ide_pio_command *cmd,
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void *buffer, size_t bytes)
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{
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unsigned int status;
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@ -155,16 +171,125 @@ static int pio_data_in(struct controller *ctrl, const struct ide_pio_command *cm
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/* How do I tell if INTRQ is asserted? */
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pio_set_registers(ctrl, cmd);
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udelay(1);
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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status = inb(IDE_REG_STATUS(ctrl));
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if (!(status & IDE_STATUS_DRQ)) {
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print_status(ctrl);
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return -1;
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}
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insw(IDE_REG_DATA(ctrl), buffer, bytes/2);
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status = inb(IDE_REG_STATUS(ctrl));
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if (status & IDE_STATUS_ERR) {
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if (status & IDE_STATUS_DRQ) {
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print_status(ctrl);
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return -1;
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}
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return 0;
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}
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#ifdef __BIG_ENDIAN
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static int pio_data_in_sw(struct controller *ctrl,
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const struct ide_pio_command *cmd,
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void *buffer, size_t bytes)
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{
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unsigned int status;
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/* FIXME handle commands with multiple blocks */
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/* Wait until the busy bit is clear */
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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/* How do I tell if INTRQ is asserted? */
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pio_set_registers(ctrl, cmd);
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udelay(1);
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if (await_ide(not_bsy, ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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status = inb(IDE_REG_STATUS(ctrl));
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if (!(status & IDE_STATUS_DRQ)) {
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print_status(ctrl);
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return -1;
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}
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insw_ns(IDE_REG_DATA(ctrl), buffer, bytes/2);
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status = inb(IDE_REG_STATUS(ctrl));
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if (status & IDE_STATUS_DRQ) {
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print_status(ctrl);
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return -1;
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}
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return 0;
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}
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#endif /* __BIG_ENDIAN */
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static int pio_packet(struct harddisk_info *info, int in,
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const void *packet, int packet_len,
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void *buffer, int buffer_len)
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{
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unsigned int status;
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struct ide_pio_command cmd;
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memset(&cmd, 0, sizeof(cmd));
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/* Wait until the busy bit is clear */
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if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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/* Issue a PACKET command */
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cmd.lba_mid = (uint8_t) buffer_len;
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cmd.lba_high = (uint8_t) (buffer_len >> 8);
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cmd.device = IDE_DH_DEFAULT | info->slave;
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cmd.command = IDE_CMD_PACKET;
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pio_set_registers(info->ctrl, &cmd);
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udelay(1);
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if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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status = inb(IDE_REG_STATUS(info->ctrl));
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if (!(status & IDE_STATUS_DRQ)) {
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printk_debug("no drq after PACKET\n");
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print_status(info->ctrl);
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return -1;
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}
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/* Send the packet */
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#ifdef __BIG_ENDIAN
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outsw_ns(IDE_REG_DATA(info->ctrl), packet, packet_len/2);
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#else /* __BIG_ENDIAN */
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outsw(IDE_REG_DATA(info->ctrl), packet, packet_len/2);
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#endif /* __BIG_ENDIAN */
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if (await_ide(not_bsy, info->ctrl, IDE_TIMEOUT) < 0) {
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return -1;
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}
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status = inb(IDE_REG_STATUS(info->ctrl));
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if (buffer_len == 0) {
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if (status & IDE_STATUS_DRQ) {
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printk_debug("drq after non-data command\n");
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print_status(info->ctrl);
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return -1;
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}
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return 0;
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}
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if (!(status & IDE_STATUS_DRQ)) {
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printk_debug("no drq after sending packet\n");
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print_status(info->ctrl);
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return -1;
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}
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#ifdef __BIG_ENDIAN
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insw_ns(IDE_REG_DATA(info->ctrl), buffer, buffer_len/2);
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#else /* __BIG_ENDIAN */
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insw(IDE_REG_DATA(info->ctrl), buffer, buffer_len/2);
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#endif /* __BIG_ENDIAN */
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status = inb(IDE_REG_STATUS(info->ctrl));
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if (status & IDE_STATUS_DRQ) {
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printk_debug("drq after insw\n");
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print_status(info->ctrl);
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return -1;
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}
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return 0;
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@ -181,6 +306,8 @@ static inline int ide_read_sector_chs(
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memset(&cmd, 0, sizeof(cmd));
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cmd.sector_count = 1;
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//printk_debug("ide_read_sector_chs: sector= %ld.\n",sector);
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track = sector / info->sectors_per_track;
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/* Sector number */
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offset = 1 + (sector % info->sectors_per_track);
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@ -193,7 +320,11 @@ static inline int ide_read_sector_chs(
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info->slave |
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IDE_DH_CHS;
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cmd.command = IDE_CMD_READ_SECTORS;
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#ifdef __BIG_ENDIAN
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return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#else /* __BIG_ENDIAN */
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return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#endif /* __BIG_ENDIAN */
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}
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static inline int ide_read_sector_lba(
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@ -211,7 +342,12 @@ static inline int ide_read_sector_lba(
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info->slave |
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IDE_DH_LBA;
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cmd.command = IDE_CMD_READ_SECTORS;
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//printk_debug("%s: sector= %ld, device command= 0x%x.\n",__FUNCTION__,(unsigned long) sector, cmd.device);
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#ifdef __BIG_ENDIAN
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return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#else /* __BIG_ENDIAN */
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return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#endif /* __BIG_ENDIAN */
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}
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static inline int ide_read_sector_lba48(
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@ -219,6 +355,7 @@ static inline int ide_read_sector_lba48(
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{
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struct ide_pio_command cmd;
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memset(&cmd, 0, sizeof(cmd));
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//printk_debug("ide_read_sector_lba48: sector= %ld.\n",(unsigned long) sector);
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cmd.sector_count = 1;
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cmd.lba_low = sector & 0xff;
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@ -229,31 +366,79 @@ static inline int ide_read_sector_lba48(
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cmd.lba_high2 = (sector >> 40) & 0xff;
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cmd.device = info->slave | IDE_DH_LBA;
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cmd.command = IDE_CMD_READ_SECTORS_EXT;
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#ifdef __BIG_ENDIAN
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return pio_data_in_sw(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#else /* __BIG_ENDIAN */
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return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE);
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#endif /* __BIG_ENDIAN */
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}
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int ide_read(int driveno, unsigned int sector, void *buf)
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static inline int ide_read_sector_packet(
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struct harddisk_info *info, void *buffer, sector_t sector)
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{
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struct harddisk_info *info;
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char packet[12];
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static uint8_t cdbuffer[CDROM_SECTOR_SIZE];
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static struct harddisk_info *last_disk = 0;
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static sector_t last_sector = (sector_t) -1;
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uint8_t *buf;
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uint32_t hw_sector;
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//printk_debug("sector=%Ld\n", sector);
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if (info->hw_sector_size == CDROM_SECTOR_SIZE) {
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buf = cdbuffer;
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hw_sector = sector >> 2;
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} else {
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buf = buffer;
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hw_sector = sector;
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}
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if (buf==buffer || info != last_disk || hw_sector != last_sector) {
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//printk_debug("hw_sector=%u\n", hw_sector);
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memset(packet, 0, sizeof packet);
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packet[0] = 0x28; /* READ */
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packet[2] = hw_sector >> 24;
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packet[3] = hw_sector >> 16;
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packet[4] = hw_sector >> 8;
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packet[5] = hw_sector >> 0;
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packet[7] = 0;
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packet[8] = 1; /* length */
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if (pio_packet(info, 1, packet, sizeof packet,
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buf, info->hw_sector_size) != 0) {
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printk_debug("read error\n");
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return -1;
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}
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last_disk = info;
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last_sector = hw_sector;
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}
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if (buf != buffer)
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memcpy(buffer, &cdbuffer[(sector & 3) << 9], IDE_SECTOR_SIZE);
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return 0;
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}
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int ide_read(int drive, sector_t sector, void *buffer)
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{
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struct harddisk_info *info = &harddisk_info[drive];
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int result;
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if (driveno > NUM_HD-1)
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return -1;
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info = &harddisk_info[driveno];
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//printk_debug("drive=%d, sector=%ld\n",drive,(unsigned long) sector);
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/* Report the buffer is empty */
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if (sector > info->sectors) {
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return -1;
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}
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if (info->address_mode == ADDRESS_MODE_CHS) {
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result = ide_read_sector_chs(info, buf, sector);
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result = ide_read_sector_chs(info, buffer, sector);
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}
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else if (info->address_mode == ADDRESS_MODE_LBA) {
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result = ide_read_sector_lba(info, buf, sector);
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result = ide_read_sector_lba(info, buffer, sector);
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}
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else if (info->address_mode == ADDRESS_MODE_LBA48) {
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result = ide_read_sector_lba48(info, buf, sector);
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result = ide_read_sector_lba48(info, buffer, sector);
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}
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else if (info->address_mode == ADDRESS_MODE_PACKET) {
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result = ide_read_sector_packet(info, buffer, sector);
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}
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else {
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result = -1;
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@ -261,11 +446,11 @@ int ide_read(int driveno, unsigned int sector, void *buf)
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return result;
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}
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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;
|
||||
struct ide_pio_command cmd;
|
||||
unsigned char disk_buffer[DISK_BUFFER_SIZE];
|
||||
int i;
|
||||
|
||||
info->ctrl = ctrl;
|
||||
|
|
@ -276,15 +461,16 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
|
|||
info->sectors = 0ul;
|
||||
info->drive_exists = 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->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 */
|
||||
outb(IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave,
|
||||
IDE_REG_DEVICE(ctrl));
|
||||
udelay(50000);
|
||||
mdelay(50);
|
||||
|
||||
/* Test to see if the drive registers exist,
|
||||
* 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;
|
||||
}
|
||||
}
|
||||
|
||||
printk_info("Probing for disk %d\n", drive);
|
||||
printk_debug("Probing for hd%c\n", 'a'+drive);
|
||||
|
||||
memset(&cmd, 0, sizeof(cmd));
|
||||
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, disk_buffer, IDE_SECTOR_SIZE) < 0) {
|
||||
if (pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) {
|
||||
/* Well, if that command didn't work, we probably don't have drive. */
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
/* Now suck the data out */
|
||||
drive_info = (uint16_t *)disk_buffer;
|
||||
drive_info = (uint16_t *)buffer;
|
||||
if (drive_info[2] == 0x37C8) {
|
||||
/* If the response is incomplete spin up the drive... */
|
||||
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));
|
||||
cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS |
|
||||
info->slave;
|
||||
cmd.command = IDE_CMD_IDENTIFY_DEVICE;
|
||||
if(pio_data_in(ctrl, &cmd, disk_buffer, IDE_SECTOR_SIZE) < 0) {
|
||||
cmd.command = ident_command;
|
||||
if (pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) {
|
||||
/* If the command didn't work give up on the drive. */
|
||||
return 1;
|
||||
}
|
||||
|
|
@ -360,19 +543,23 @@ static int init_drive(struct harddisk_info *info, struct controller *ctrl, int s
|
|||
info->drive_exists = 1;
|
||||
|
||||
/* 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->sectors = (drive_info[61] << 16) | (drive_info[60]);
|
||||
printk_debug("LBA mode, sectors=%Ld\n", info->sectors);
|
||||
/* Enable LBA48 mode if it is present */
|
||||
if (drive_info[83] & (1 <<10)) {
|
||||
/* Should LBA48 depend on LBA? */
|
||||
printk_info("LBA48 mode\n");
|
||||
info->address_mode = ADDRESS_MODE_LBA48;
|
||||
info->sectors =
|
||||
(((sector_t)drive_info[103]) << 48) |
|
||||
(((sector_t)drive_info[102]) << 32) |
|
||||
(((sector_t)drive_info[101]) << 16) |
|
||||
(((sector_t)drive_info[100]) << 0);
|
||||
printk_debug("LBA48 mode, sectors=%Ld\n", info->sectors);
|
||||
}
|
||||
} else {
|
||||
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->heads *
|
||||
info->cylinders;
|
||||
printk_info("%s sectors_per_track=[%d], heads=[%d], cylinders=[%d]\n",
|
||||
__FUNCTION__,
|
||||
printk_debug("CHS mode, sectors_per_track=[%d], heads=[%d], cylinders=[%d]\n",
|
||||
info->sectors_per_track,
|
||||
info->heads,
|
||||
info->cylinders);
|
||||
printk_debug("sectors=%Ld\n", info->sectors);
|
||||
}
|
||||
/* See if we have a slave */
|
||||
if (!info->slave && (((drive_info[93] >> 14) & 3) == 1)) {
|
||||
info->slave_absent = !(drive_info[93] & (1 << 5));
|
||||
}
|
||||
|
||||
/* See if we need to put the device in CFA power mode 1 */
|
||||
if ((drive_info[160] & ((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;
|
||||
}
|
||||
}
|
||||
printk_info("disk%d %dk cap: %hx\n",
|
||||
info->basedrive,
|
||||
(unsigned long)(info->sectors >> 1),
|
||||
drive_info[49]);
|
||||
|
||||
/* Some extra steps for older drives.. */
|
||||
if (info->address_mode != ADDRESS_MODE_PACKET) {
|
||||
/* 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;
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
/* 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;
|
||||
}
|
||||
#endif
|
||||
/* ts1: Try some heuristics to avoid waiting for floating bus */
|
||||
if (ide_bus_floating(ctrl))
|
||||
return -1;
|
||||
|
||||
if (ide_software_reset(ctrl) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
|
@ -465,51 +736,229 @@ static int init_controller(struct controller *ctrl, int num)
|
|||
*/
|
||||
|
||||
/* Now initialize the individual drives */
|
||||
drive = num * 2; /* 2 drives per controller */
|
||||
info = &harddisk_info[drive];
|
||||
init_drive(info, ctrl, 0, drive);
|
||||
|
||||
/* at the moment this only works for the first drive */
|
||||
#if 0
|
||||
init_drive(info, ctrl, 0, drive, buffer, IDE_CMD_IDENTIFY_DEVICE);
|
||||
if (!info->drive_exists)
|
||||
init_drive(info, ctrl, 0, drive, buffer,
|
||||
IDE_CMD_IDENTIFY_PACKET_DEVICE);
|
||||
if (info->drive_exists && !info->slave_absent) {
|
||||
drive++;
|
||||
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;
|
||||
}
|
||||
|
||||
int ide_init(void)
|
||||
static int
|
||||
atapi_request_sense(struct harddisk_info *info, uint8_t *asc, uint8_t *ascq)
|
||||
{
|
||||
int index;
|
||||
int drives = 0;
|
||||
uint8_t packet[12];
|
||||
uint8_t buf[18];
|
||||
int i;
|
||||
|
||||
/* Intialize the harddisk_info structures */
|
||||
memset(harddisk_info, 0, sizeof(harddisk_info));
|
||||
memset(packet, 0, sizeof packet);
|
||||
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++) {
|
||||
/* IDE normal pci mode */
|
||||
uint32_t cmd_base, ctrl_base;
|
||||
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);
|
||||
for (i = 0; i < sizeof buf; i++)
|
||||
printk_debug("%02x ", buf[i]);
|
||||
printk_debug("\n");
|
||||
|
||||
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) {
|
||||
/* nothing behind the controller */
|
||||
continue;
|
||||
static int atapi_detect_medium(struct harddisk_info *info)
|
||||
{
|
||||
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;
|
||||
}
|
||||
drives++;
|
||||
/*
|
||||
* break here to avoid lengthy timeout probing for
|
||||
* disks on second controller
|
||||
*/
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
udelay(1000);
|
||||
}
|
||||
printk_debug("read capacity failed\n");
|
||||
return -1;
|
||||
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: */
|
||||
|
|
|
|||
Loading…
Reference in New Issue