u-boot/drivers/block/ide.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2011
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#define LOG_CATEGORY UCLASS_IDE
#include <common.h>
#include <ata.h>
#include <blk.h>
#include <bootdev.h>
#include <dm.h>
#include <ide.h>
#include <log.h>
#include <part.h>
#include <watchdog.h>
#include <asm/io.h>
#include <linux/delay.h>
#ifdef __PPC__
# define EIEIO __asm__ volatile ("eieio")
# define SYNC __asm__ volatile ("sync")
#else
# define EIEIO /* nothing */
# define SYNC /* nothing */
#endif
/* Current offset for IDE0 / IDE1 bus access */
ulong ide_bus_offset[CONFIG_SYS_IDE_MAXBUS] = {
#if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
CONFIG_SYS_ATA_IDE0_OFFSET,
#endif
#if defined(CONFIG_SYS_ATA_IDE1_OFFSET) && (CONFIG_SYS_IDE_MAXBUS > 1)
CONFIG_SYS_ATA_IDE1_OFFSET,
#endif
};
#define ATA_CURR_BASE(dev) (CONFIG_SYS_ATA_BASE_ADDR + \
ide_bus_offset[IDE_BUS(dev)])
#define IDE_TIME_OUT 2000 /* 2 sec timeout */
#define ATAPI_TIME_OUT 7000 /* 7 sec timeout (5 sec seems to work...) */
#define IDE_SPIN_UP_TIME_OUT 5000 /* 5 sec spin-up timeout */
static void ide_reset(void)
{
if (IS_ENABLED(CONFIG_IDE_RESET)) {
/* assert reset */
ide_set_reset(1);
/* the reset signal shall be asserted for et least 25 us */
udelay(25);
schedule();
/* de-assert RESET signal */
ide_set_reset(0);
mdelay(250);
}
}
static void ide_outb(int dev, int port, u8 val)
{
log_debug("(dev= %d, port= %#x, val= 0x%02x) : @ 0x%08lx\n",
dev, port, val, ATA_CURR_BASE(dev) + port);
outb(val, ATA_CURR_BASE(dev) + port);
}
static u8 ide_inb(int dev, int port)
{
uchar val;
val = inb(ATA_CURR_BASE(dev) + port);
log_debug("(dev= %d, port= %#x) : @ 0x%08lx -> 0x%02x\n",
dev, port, ATA_CURR_BASE(dev) + port, val);
return val;
}
static void ide_input_swap_data(int dev, ulong *sect_buf, int words)
{
uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
ushort *dbuf = (ushort *)sect_buf;
log_debug("in input swap data base for read is %p\n", (void *)paddr);
while (words--) {
EIEIO;
*dbuf++ = be16_to_cpu(inw(paddr));
EIEIO;
*dbuf++ = be16_to_cpu(inw(paddr));
}
}
/*
* Wait until Busy bit is off, or timeout (in ms)
* Return last status
*/
static uchar ide_wait(int dev, ulong t)
{
ulong delay = 10 * t; /* poll every 100 us */
uchar c;
while ((c = ide_inb(dev, ATA_STATUS)) & ATA_STAT_BUSY) {
udelay(100);
if (!delay--)
break;
}
return c;
}
/*
* copy src to dest, skipping leading and trailing blanks and null
* terminate the string
* "len" is the size of available memory including the terminating '\0'
*/
static void ident_cpy(u8 *dst, u8 *src, uint len)
{
u8 *end, *last;
last = dst;
end = src + len - 1;
/* reserve space for '\0' */
if (len < 2)
goto OUT;
/* skip leading white space */
while ((*src) && (src < end) && (*src == ' '))
++src;
/* copy string, omitting trailing white space */
while ((*src) && (src < end)) {
*dst++ = *src;
if (*src++ != ' ')
last = dst;
}
OUT:
*last = '\0';
}
/****************************************************************************
* ATAPI Support
*/
/* since ATAPI may use commands with not 4 bytes alligned length
* we have our own transfer functions, 2 bytes alligned */
static void ide_output_data_shorts(int dev, ushort *sect_buf, int shorts)
{
uintptr_t paddr = ATA_CURR_BASE(dev) + ATA_DATA_REG;
ushort *dbuf;
dbuf = (ushort *)sect_buf;
log_debug("in output data shorts base for read is %p\n", (void *)paddr);
while (shorts--) {
EIEIO;
outw(cpu_to_le16(*dbuf++), paddr);
}
}
static void ide_input_data_shorts(int dev, ushort *sect_buf, int shorts)
{
uintptr_t paddr = ATA_CURR_BASE(dev) + ATA_DATA_REG;
ushort *dbuf;
dbuf = (ushort *)sect_buf;
log_debug("in input data shorts base for read is %p\n", (void *)paddr);
while (shorts--) {
EIEIO;
*dbuf++ = le16_to_cpu(inw(paddr));
}
}
/*
* Wait until (Status & mask) == res, or timeout (in ms)
* Return last status
* This is used since some ATAPI CD ROMs clears their Busy Bit first
* and then they set their DRQ Bit
*/
static uchar atapi_wait_mask(int dev, ulong t, uchar mask, uchar res)
{
ulong delay = 10 * t; /* poll every 100 us */
uchar c;
/* prevents to read the status before valid */
c = ide_inb(dev, ATA_DEV_CTL);
while (c = ide_inb(dev, ATA_STATUS) & mask, c != res) {
/* break if error occurs (doesn't make sense to wait more) */
if ((c & ATA_STAT_ERR) == ATA_STAT_ERR)
break;
udelay(100);
if (!delay--)
break;
}
return c;
}
/*
* issue an atapi command
*/
static u8 atapi_issue(int device, u8 *ccb, int ccblen, u8 *buffer, int buflen)
{
u8 c, err, mask, res;
int n;
/* Select device
*/
mask = ATA_STAT_BUSY | ATA_STAT_DRQ;
res = 0;
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
if ((c & mask) != res) {
printf("ATAPI_ISSUE: device %d not ready status %x\n", device,
c);
err = 0xff;
goto AI_OUT;
}
/* write taskfile */
ide_outb(device, ATA_ERROR_REG, 0); /* no DMA, no overlaped */
ide_outb(device, ATA_SECT_CNT, 0);
ide_outb(device, ATA_SECT_NUM, 0);
ide_outb(device, ATA_CYL_LOW, (u8)(buflen & 0xff));
ide_outb(device, ATA_CYL_HIGH, (u8)((buflen >> 8) & 0xff));
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
ide_outb(device, ATA_COMMAND, ATA_CMD_PACKET);
udelay(50);
mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
res = ATA_STAT_DRQ;
c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
if ((c & mask) != res) { /* DRQ must be 1, BSY 0 */
printf("ATAPI_ISSUE: Error (no IRQ) before sending ccb dev %d status %#02x\n",
device, c);
err = 0xff;
goto AI_OUT;
}
/* write command block */
ide_output_data_shorts(device, (ushort *)ccb, ccblen / 2);
/* ATAPI Command written wait for completition */
mdelay(5); /* device must set bsy */
mask = ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR;
/*
* if no data wait for DRQ = 0 BSY = 0
* if data wait for DRQ = 1 BSY = 0
*/
res = 0;
if (buflen)
res = ATA_STAT_DRQ;
c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
if ((c & mask) != res) {
if (c & ATA_STAT_ERR) {
err = (ide_inb(device, ATA_ERROR_REG)) >> 4;
log_debug("1 returned sense key %x status %02x\n",
err, c);
} else {
printf("ATAPI_ISSUE: (no DRQ) after sending ccb (%x) status %#02x\n",
ccb[0], c);
err = 0xff;
}
goto AI_OUT;
}
n = ide_inb(device, ATA_CYL_HIGH);
n <<= 8;
n += ide_inb(device, ATA_CYL_LOW);
if (n > buflen) {
printf("ERROR, transfer bytes %d requested only %d\n", n,
buflen);
err = 0xff;
goto AI_OUT;
}
if (!n && buflen < 0) {
printf("ERROR, transfer bytes %d requested %d\n", n, buflen);
err = 0xff;
goto AI_OUT;
}
if (n != buflen) {
log_debug("WARNING, transfer bytes %d not equal with requested %d\n",
n, buflen);
}
if (n) { /* data transfer */
log_debug("ATAPI_ISSUE: %d Bytes to transfer\n", n);
/* we transfer shorts */
n >>= 1;
/* ok now decide if it is an in or output */
if (!(ide_inb(device, ATA_SECT_CNT) & 0x02)) {
log_debug("Write to device\n");
ide_output_data_shorts(device, (ushort *)buffer, n);
} else {
log_debug("Read from device @ %p shorts %d\n", buffer,
n);
ide_input_data_shorts(device, (ushort *)buffer, n);
}
}
mdelay(5); /* seems that some CD ROMs need this... */
mask = ATA_STAT_BUSY | ATA_STAT_ERR;
res = 0;
c = atapi_wait_mask(device, ATAPI_TIME_OUT, mask, res);
if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
err = (ide_inb(device, ATA_ERROR_REG) >> 4);
log_debug("2 returned sense key %x status %x\n", err, c);
} else {
err = 0;
}
AI_OUT:
return err;
}
/*
* sending the command to atapi_issue. If an status other than good
* returns, an request_sense will be issued
*/
#define ATAPI_DRIVE_NOT_READY 100
#define ATAPI_UNIT_ATTN 10
static u8 atapi_issue_autoreq(int device, u8 *ccb, int ccblen, u8 *buffer,
int buflen)
{
u8 sense_data[18], sense_ccb[12];
u8 res, key, asc, ascq;
int notready, unitattn;
unitattn = ATAPI_UNIT_ATTN;
notready = ATAPI_DRIVE_NOT_READY;
retry:
res = atapi_issue(device, ccb, ccblen, buffer, buflen);
if (!res)
return 0; /* Ok */
if (res == 0xff)
return 0xff; /* error */
log_debug("(auto_req)atapi_issue returned sense key %x\n", res);
memset(sense_ccb, 0, sizeof(sense_ccb));
memset(sense_data, 0, sizeof(sense_data));
sense_ccb[0] = ATAPI_CMD_REQ_SENSE;
sense_ccb[4] = 18; /* allocation Length */
res = atapi_issue(device, sense_ccb, 12, sense_data, 18);
key = (sense_data[2] & 0xf);
asc = (sense_data[12]);
ascq = (sense_data[13]);
log_debug("ATAPI_CMD_REQ_SENSE returned %x\n", res);
log_debug(" Sense page: %02X key %02X ASC %02X ASCQ %02X\n",
sense_data[0], key, asc, ascq);
if (!key)
return 0; /* ok device ready */
if (key == 6 || asc == 0x29 || asc == 0x28) { /* Unit Attention */
if (unitattn-- > 0) {
mdelay(200);
goto retry;
}
printf("Unit Attention, tried %d\n", ATAPI_UNIT_ATTN);
goto error;
}
if (asc == 0x4 && ascq == 0x1) {
/* not ready, but will be ready soon */
if (notready-- > 0) {
mdelay(200);
goto retry;
}
printf("Drive not ready, tried %d times\n",
ATAPI_DRIVE_NOT_READY);
goto error;
}
if (asc == 0x3a) {
log_debug("Media not present\n");
goto error;
}
printf("ERROR: Unknown Sense key %02X ASC %02X ASCQ %02X\n", key, asc,
ascq);
error:
log_debug("ERROR Sense key %02X ASC %02X ASCQ %02X\n", key, asc, ascq);
return 0xff;
}
/*
* atapi_read:
* we transfer only one block per command, since the multiple DRQ per
* command is not yet implemented
*/
#define ATAPI_READ_MAX_BYTES 2048 /* we read max 2kbytes */
#define ATAPI_READ_BLOCK_SIZE 2048 /* assuming CD part */
#define ATAPI_READ_MAX_BLOCK (ATAPI_READ_MAX_BYTES/ATAPI_READ_BLOCK_SIZE)
static ulong atapi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
int device = desc->devnum;
ulong n = 0;
u8 ccb[12]; /* Command descriptor block */
ulong cnt;
log_debug("%d start " LBAF " blocks " LBAF " buffer at %lx\n", device,
blknr, blkcnt, (ulong)buffer);
do {
if (blkcnt > ATAPI_READ_MAX_BLOCK)
cnt = ATAPI_READ_MAX_BLOCK;
else
cnt = blkcnt;
ccb[0] = ATAPI_CMD_READ_12;
ccb[1] = 0; /* reserved */
ccb[2] = (u8)(blknr >> 24) & 0xff; /* MSB Block */
ccb[3] = (u8)(blknr >> 16) & 0xff; /* */
ccb[4] = (u8)(blknr >> 8) & 0xff;
ccb[5] = (u8)blknr & 0xff; /* LSB Block */
ccb[6] = (u8)(cnt >> 24) & 0xff; /* MSB Block cnt */
ccb[7] = (u8)(cnt >> 16) & 0xff;
ccb[8] = (u8)(cnt >> 8) & 0xff;
ccb[9] = (u8)cnt & 0xff; /* LSB Block */
ccb[10] = 0; /* reserved */
ccb[11] = 0; /* reserved */
if (atapi_issue_autoreq(device, ccb, 12,
(u8 *)buffer,
cnt * ATAPI_READ_BLOCK_SIZE) == 0xff)
return n;
n += cnt;
blkcnt -= cnt;
blknr += cnt;
buffer += cnt * ATAPI_READ_BLOCK_SIZE;
} while (blkcnt > 0);
return n;
}
static void atapi_inquiry(struct blk_desc *desc)
{
u8 ccb[12]; /* Command descriptor block */
u8 iobuf[64]; /* temp buf */
u8 c;
int device;
device = desc->devnum;
desc->type = DEV_TYPE_UNKNOWN; /* not yet valid */
memset(ccb, 0, sizeof(ccb));
memset(iobuf, 0, sizeof(iobuf));
ccb[0] = ATAPI_CMD_INQUIRY;
ccb[4] = 40; /* allocation Legnth */
c = atapi_issue_autoreq(device, ccb, 12, (u8 *)iobuf, 40);
log_debug("ATAPI_CMD_INQUIRY returned %x\n", c);
if (c)
return;
/* copy device ident strings */
ident_cpy((u8 *)desc->vendor, &iobuf[8], 8);
ident_cpy((u8 *)desc->product, &iobuf[16], 16);
ident_cpy((u8 *)desc->revision, &iobuf[32], 5);
desc->lun = 0;
desc->lba = 0;
desc->blksz = 0;
desc->log2blksz = LOG2_INVALID(typeof(desc->log2blksz));
desc->type = iobuf[0] & 0x1f;
if (iobuf[1] & 0x80)
desc->removable = 1;
else
desc->removable = 0;
memset(ccb, 0, sizeof(ccb));
memset(iobuf, 0, sizeof(iobuf));
ccb[0] = ATAPI_CMD_START_STOP;
ccb[4] = 0x03; /* start */
c = atapi_issue_autoreq(device, ccb, 12, (u8 *)iobuf, 0);
log_debug("ATAPI_CMD_START_STOP returned %x\n", c);
if (c)
return;
memset(ccb, 0, sizeof(ccb));
memset(iobuf, 0, sizeof(iobuf));
c = atapi_issue_autoreq(device, ccb, 12, (u8 *)iobuf, 0);
log_debug("ATAPI_CMD_UNIT_TEST_READY returned %x\n", c);
if (c)
return;
memset(ccb, 0, sizeof(ccb));
memset(iobuf, 0, sizeof(iobuf));
ccb[0] = ATAPI_CMD_READ_CAP;
c = atapi_issue_autoreq(device, ccb, 12, (u8 *)iobuf, 8);
log_debug("ATAPI_CMD_READ_CAP returned %x\n", c);
if (c)
return;
log_debug("Read Cap: LBA %02X%02X%02X%02X blksize %02X%02X%02X%02X\n",
iobuf[0], iobuf[1], iobuf[2], iobuf[3],
iobuf[4], iobuf[5], iobuf[6], iobuf[7]);
desc->lba = (ulong)iobuf[0] << 24 | (ulong)iobuf[1] << 16 |
(ulong)iobuf[2] << 8 | (ulong)iobuf[3];
desc->blksz = (ulong)iobuf[4] << 24 | (ulong)iobuf[5] << 16 |
(ulong)iobuf[6] << 8 | (ulong)iobuf[7];
desc->log2blksz = LOG2(desc->blksz);
/* ATAPI devices cannot use 48bit addressing (ATA/ATAPI v7) */
desc->lba48 = false;
}
/**
* ide_ident() - Identify an IDE device
*
* @device: Device number to use
* @desc: Block descriptor to fill in
* Returns: 0 if OK, -ENOENT if no device is found
*/
static int ide_ident(int device, struct blk_desc *desc)
{
hd_driveid_t iop;
bool is_atapi = false;
int tries = 1;
u8 c;
memset(desc, '\0', sizeof(*desc));
desc->devnum = device;
desc->type = DEV_TYPE_UNKNOWN;
desc->uclass_id = UCLASS_IDE;
desc->log2blksz = LOG2_INVALID(typeof(desc->log2blksz));
printf(" Device %d: ", device);
/* Select device
*/
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
if (IS_ENABLED(CONFIG_ATAPI))
tries = 2;
while (tries) {
/* check signature */
if (IS_ENABLED(CONFIG_ATAPI) &&
ide_inb(device, ATA_SECT_CNT) == 0x01 &&
ide_inb(device, ATA_SECT_NUM) == 0x01 &&
ide_inb(device, ATA_CYL_LOW) == 0x14 &&
ide_inb(device, ATA_CYL_HIGH) == 0xeb) {
/* ATAPI Signature found */
is_atapi = true;
/*
* Start Ident Command
*/
ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATAPI);
/*
* Wait for completion - ATAPI devices need more time
* to become ready
*/
c = ide_wait(device, ATAPI_TIME_OUT);
} else {
/*
* Start Ident Command
*/
ide_outb(device, ATA_COMMAND, ATA_CMD_ID_ATA);
/*
* Wait for completion
*/
c = ide_wait(device, IDE_TIME_OUT);
}
if ((c & ATA_STAT_DRQ) &&
!(c & (ATA_STAT_FAULT | ATA_STAT_ERR))) {
break;
} else if (IS_ENABLED(CONFIG_ATAPI)) {
/*
* Need to soft reset the device
* in case it's an ATAPI...
*/
log_debug("Retrying...\n");
ide_outb(device, ATA_DEV_HD,
ATA_LBA | ATA_DEVICE(device));
mdelay(100);
ide_outb(device, ATA_COMMAND, 0x08);
mdelay(500);
/* Select device */
ide_outb(device, ATA_DEV_HD,
ATA_LBA | ATA_DEVICE(device));
}
tries--;
}
if (!tries) /* Not found */
return -ENOENT;
ide_input_swap_data(device, (ulong *)&iop, ATA_SECTORWORDS);
ident_cpy((u8 *)desc->revision, iop.fw_rev, sizeof(desc->revision));
ident_cpy((u8 *)desc->vendor, iop.model, sizeof(desc->vendor));
ident_cpy((u8 *)desc->product, iop.serial_no, sizeof(desc->product));
if (iop.config & 0x0080)
desc->removable = 1;
else
desc->removable = 0;
if (IS_ENABLED(CONFIG_ATAPI) && is_atapi) {
desc->atapi = true;
atapi_inquiry(desc);
return 0;
}
iop.lba_capacity[0] = be16_to_cpu(iop.lba_capacity[0]);
iop.lba_capacity[1] = be16_to_cpu(iop.lba_capacity[1]);
desc->lba = (ulong)iop.lba_capacity[0] |
(ulong)iop.lba_capacity[1] << 16;
if (IS_ENABLED(CONFIG_LBA48) && (iop.command_set_2 & 0x0400)) {
/* LBA 48 support */
desc->lba48 = true;
for (int i = 0; i < 4; i++)
iop.lba48_capacity[i] = be16_to_cpu(iop.lba48_capacity[i]);
desc->lba = (unsigned long long)iop.lba48_capacity[0] |
(unsigned long long)iop.lba48_capacity[1] << 16 |
(unsigned long long)iop.lba48_capacity[2] << 32 |
(unsigned long long)iop.lba48_capacity[3] << 48;
} else {
desc->lba48 = false;
}
/* assuming HD */
desc->type = DEV_TYPE_HARDDISK;
desc->blksz = ATA_BLOCKSIZE;
desc->log2blksz = LOG2(desc->blksz);
desc->lun = 0; /* just to fill something in... */
#if 0 /* only used to test the powersaving mode,
* if enabled, the drive goes after 5 sec
* in standby mode */
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
c = ide_wait(device, IDE_TIME_OUT);
ide_outb(device, ATA_SECT_CNT, 1);
ide_outb(device, ATA_LBA_LOW, 0);
ide_outb(device, ATA_LBA_MID, 0);
ide_outb(device, ATA_LBA_HIGH, 0);
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
ide_outb(device, ATA_COMMAND, 0xe3);
udelay(50);
c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
#endif
return 0;
}
/**
* ide_init_one() - Init one IDE device
*
* @bus: Bus to use
* Return: 0 iuf OK, -EIO if not available, -ETIMEDOUT if timed out
*/
static int ide_init_one(int bus)
{
int dev = bus * CONFIG_SYS_IDE_MAXDEVICE / CONFIG_SYS_IDE_MAXBUS;
int i;
u8 c;
printf("Bus %d: ", bus);
/* Select device */
mdelay(100);
ide_outb(dev, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(dev));
mdelay(100);
i = 0;
do {
mdelay(10);
c = ide_inb(dev, ATA_STATUS);
i++;
if (i > (ATA_RESET_TIME * 100)) {
puts("** Timeout **\n");
return -ETIMEDOUT;
}
if (i >= 100 && !(i % 100))
putc('.');
} while (c & ATA_STAT_BUSY);
if (c & (ATA_STAT_BUSY | ATA_STAT_FAULT)) {
puts("not available ");
log_debug("Status = %#02X ", c);
return -EIO;
} else if (IS_ENABLED(CONFIG_ATAPI) && !(c & ATA_STAT_READY)) {
/* ATAPI Devices do not set DRDY */
puts("not available ");
log_debug("Status = %#02X ", c);
return -EIO;
}
puts("OK ");
return 0;
}
static void ide_output_data(int dev, const ulong *sect_buf, int words)
{
uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
ushort *dbuf;
dbuf = (ushort *)sect_buf;
while (words--) {
EIEIO;
outw(cpu_to_le16(*dbuf++), paddr);
EIEIO;
outw(cpu_to_le16(*dbuf++), paddr);
}
}
static void ide_input_data(int dev, ulong *sect_buf, int words)
{
uintptr_t paddr = (ATA_CURR_BASE(dev) + ATA_DATA_REG);
ushort *dbuf;
dbuf = (ushort *)sect_buf;
log_debug("in input data base for read is %p\n", (void *)paddr);
while (words--) {
EIEIO;
*dbuf++ = le16_to_cpu(inw(paddr));
EIEIO;
*dbuf++ = le16_to_cpu(inw(paddr));
}
}
static ulong ide_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
int device = desc->devnum;
bool lba48 = false;
ulong n = 0;
u8 pwrsave = 0; /* power save */
u8 c;
if (IS_ENABLED(CONFIG_LBA48) && (blknr & 0x0000fffff0000000ULL)) {
/* more than 28 bits used, use 48bit mode */
lba48 = true;
}
log_debug("dev %d start " LBAF ", blocks " LBAF " buffer at %lx\n",
device, blknr, blkcnt, (ulong)buffer);
/* Select device
*/
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
c = ide_wait(device, IDE_TIME_OUT);
if (c & ATA_STAT_BUSY) {
printf("IDE read: device %d not ready\n", device);
goto IDE_READ_E;
}
/* first check if the drive is in Powersaving mode, if yes,
* increase the timeout value */
ide_outb(device, ATA_COMMAND, ATA_CMD_CHK_POWER);
udelay(50);
c = ide_wait(device, IDE_TIME_OUT); /* can't take over 500 ms */
if (c & ATA_STAT_BUSY) {
printf("IDE read: device %d not ready\n", device);
goto IDE_READ_E;
}
if ((c & ATA_STAT_ERR) == ATA_STAT_ERR) {
printf("No Powersaving mode %x\n", c);
} else {
c = ide_inb(device, ATA_SECT_CNT);
log_debug("Powersaving %02X\n", c);
if (!c)
pwrsave = 1;
}
while (blkcnt-- > 0) {
c = ide_wait(device, IDE_TIME_OUT);
if (c & ATA_STAT_BUSY) {
printf("IDE read: device %d not ready\n", device);
break;
}
if (IS_ENABLED(CONFIG_LBA48) && lba48) {
/* write high bits */
ide_outb(device, ATA_SECT_CNT, 0);
ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xff);
#ifdef CONFIG_SYS_64BIT_LBA
ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xff);
ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xff);
#else
ide_outb(device, ATA_LBA_MID, 0);
ide_outb(device, ATA_LBA_HIGH, 0);
#endif
}
ide_outb(device, ATA_SECT_CNT, 1);
ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xff);
ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xff);
ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xff);
if (IS_ENABLED(CONFIG_LBA48) && lba48) {
ide_outb(device, ATA_DEV_HD,
ATA_LBA | ATA_DEVICE(device));
ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ_EXT);
} else {
ide_outb(device, ATA_DEV_HD, ATA_LBA |
ATA_DEVICE(device) | ((blknr >> 24) & 0xf));
ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_READ);
}
udelay(50);
if (pwrsave) {
/* may take up to 4 sec */
c = ide_wait(device, IDE_SPIN_UP_TIME_OUT);
pwrsave = 0;
} else {
/* can't take over 500 ms */
c = ide_wait(device, IDE_TIME_OUT);
}
if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
ATA_STAT_DRQ) {
printf("Error (no IRQ) dev %d blk " LBAF
": status %#02x\n", device, blknr, c);
break;
}
ide_input_data(device, buffer, ATA_SECTORWORDS);
(void) ide_inb(device, ATA_STATUS); /* clear IRQ */
++n;
++blknr;
buffer += ATA_BLOCKSIZE;
}
IDE_READ_E:
return n;
}
static ulong ide_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
const void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
int device = desc->devnum;
ulong n = 0;
bool lba48 = false;
u8 c;
if (IS_ENABLED(CONFIG_LBA48) && (blknr & 0x0000fffff0000000ULL)) {
/* more than 28 bits used, use 48bit mode */
lba48 = true;
}
/* Select device
*/
ide_outb(device, ATA_DEV_HD, ATA_LBA | ATA_DEVICE(device));
while (blkcnt-- > 0) {
c = ide_wait(device, IDE_TIME_OUT);
if (c & ATA_STAT_BUSY) {
printf("IDE read: device %d not ready\n", device);
goto WR_OUT;
}
if (IS_ENABLED(CONFIG_LBA48) && lba48) {
/* write high bits */
ide_outb(device, ATA_SECT_CNT, 0);
ide_outb(device, ATA_LBA_LOW, (blknr >> 24) & 0xff);
#ifdef CONFIG_SYS_64BIT_LBA
ide_outb(device, ATA_LBA_MID, (blknr >> 32) & 0xff);
ide_outb(device, ATA_LBA_HIGH, (blknr >> 40) & 0xff);
#else
ide_outb(device, ATA_LBA_MID, 0);
ide_outb(device, ATA_LBA_HIGH, 0);
#endif
}
ide_outb(device, ATA_SECT_CNT, 1);
ide_outb(device, ATA_LBA_LOW, (blknr >> 0) & 0xff);
ide_outb(device, ATA_LBA_MID, (blknr >> 8) & 0xff);
ide_outb(device, ATA_LBA_HIGH, (blknr >> 16) & 0xff);
if (IS_ENABLED(CONFIG_LBA48) && lba48) {
ide_outb(device, ATA_DEV_HD,
ATA_LBA | ATA_DEVICE(device));
ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE_EXT);
} else {
ide_outb(device, ATA_DEV_HD, ATA_LBA |
ATA_DEVICE(device) | ((blknr >> 24) & 0xf));
ide_outb(device, ATA_COMMAND, ATA_CMD_PIO_WRITE);
}
udelay(50);
/* can't take over 500 ms */
c = ide_wait(device, IDE_TIME_OUT);
if ((c & (ATA_STAT_DRQ | ATA_STAT_BUSY | ATA_STAT_ERR)) !=
ATA_STAT_DRQ) {
printf("Error (no IRQ) dev %d blk " LBAF
": status %#02x\n", device, blknr, c);
goto WR_OUT;
}
ide_output_data(device, buffer, ATA_SECTORWORDS);
c = ide_inb(device, ATA_STATUS); /* clear IRQ */
++n;
++blknr;
buffer += ATA_BLOCKSIZE;
}
WR_OUT:
return n;
}
ulong ide_or_atapi_read(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt,
void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(dev);
if (IS_ENABLED(CONFIG_ATAPI) && desc->atapi)
return atapi_read(dev, blknr, blkcnt, buffer);
return ide_read(dev, blknr, blkcnt, buffer);
}
static const struct blk_ops ide_blk_ops = {
.read = ide_or_atapi_read,
.write = ide_write,
};
U_BOOT_DRIVER(ide_blk) = {
.name = "ide_blk",
.id = UCLASS_BLK,
.ops = &ide_blk_ops,
};
static int ide_bootdev_bind(struct udevice *dev)
{
struct bootdev_uc_plat *ucp = dev_get_uclass_plat(dev);
ucp->prio = BOOTDEVP_5_SCAN_SLOW;
return 0;
}
static int ide_bootdev_hunt(struct bootdev_hunter *info, bool show)
{
struct udevice *dev;
uclass_first_device(UCLASS_IDE, &dev);
return 0;
}
struct bootdev_ops ide_bootdev_ops = {
};
static const struct udevice_id ide_bootdev_ids[] = {
{ .compatible = "u-boot,bootdev-ide" },
{ }
};
U_BOOT_DRIVER(ide_bootdev) = {
.name = "ide_bootdev",
.id = UCLASS_BOOTDEV,
.ops = &ide_bootdev_ops,
.bind = ide_bootdev_bind,
.of_match = ide_bootdev_ids,
};
BOOTDEV_HUNTER(ide_bootdev_hunter) = {
.prio = BOOTDEVP_5_SCAN_SLOW,
.uclass = UCLASS_IDE,
.hunt = ide_bootdev_hunt,
.drv = DM_DRIVER_REF(ide_bootdev),
};
static int ide_probe(struct udevice *udev)
{
bool bus_ok[CONFIG_SYS_IDE_MAXBUS];
int i, bus;
schedule();
/* ATAPI Drives seems to need a proper IDE Reset */
ide_reset();
/*
* Wait for IDE to get ready.
* According to spec, this can take up to 31 seconds!
*/
for (bus = 0; bus < CONFIG_SYS_IDE_MAXBUS; ++bus) {
bus_ok[bus] = !ide_init_one(bus);
schedule();
}
putc('\n');
schedule();
for (i = 0; i < CONFIG_SYS_IDE_MAXDEVICE; i++) {
struct blk_desc *desc, pdesc;
struct udevice *blk;
char name[20];
int ret;
if (!bus_ok[IDE_BUS(i)])
continue;
ret = ide_ident(i, &pdesc);
dev_print(&pdesc);
if (ret)
continue;
sprintf(name, "blk#%d", i);
/*
* With CDROM, if there is no CD inserted, blksz will
* be zero, don't bother to create IDE block device.
*/
if (!pdesc.blksz)
continue;
ret = blk_create_devicef(udev, "ide_blk", name, UCLASS_IDE, i,
pdesc.blksz, pdesc.lba, &blk);
if (ret)
return ret;
ret = blk_probe_or_unbind(blk);
if (ret)
return ret;
/* fill in device vendor/product/rev strings */
desc = dev_get_uclass_plat(blk);
strlcpy(desc->vendor, pdesc.vendor, BLK_VEN_SIZE);
strlcpy(desc->product, pdesc.product, BLK_PRD_SIZE);
strlcpy(desc->revision, pdesc.revision, BLK_REV_SIZE);
desc->removable = pdesc.removable;
desc->atapi = pdesc.atapi;
desc->lba48 = pdesc.lba48;
desc->type = pdesc.type;
ret = bootdev_setup_for_sibling_blk(blk, "ide_bootdev");
if (ret)
return log_msg_ret("bd", ret);
}
return 0;
}
U_BOOT_DRIVER(ide) = {
.name = "ide",
.id = UCLASS_IDE,
.probe = ide_probe,
};
struct pci_device_id ide_supported[] = {
{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_IDE << 8, 0xffff00) },
{ }
};
U_BOOT_PCI_DEVICE(ide, ide_supported);
UCLASS_DRIVER(ide) = {
.name = "ide",
.id = UCLASS_IDE,
};