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Commit 8dcce408 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
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Merge branch 'bp-remove-pc-buf' into for-next 

Conflicts:
	drivers/ide/ide-tape.c
parents f3ad1165 103f7033
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Showing with 230 additions and 261 deletions
drivers/ide/ide-atapi.c
View file @ 8dcce408
......@@ -10,6 +10,9 @@
#include <scsi/scsi.h>
#define DRV_NAME "ide-atapi"
#define PFX DRV_NAME ": "
#ifdef DEBUG
#define debug_log(fmt, args...) \
printk(KERN_INFO "ide: " fmt, ## args)
......@@ -74,8 +77,6 @@ EXPORT_SYMBOL_GPL(ide_check_atapi_device);
void ide_init_pc(struct ide_atapi_pc *pc)
{
memset(pc, 0, sizeof(*pc));
pc->buf = pc->pc_buf;
pc->buf_size = IDE_PC_BUFFER_SIZE;
}
EXPORT_SYMBOL_GPL(ide_init_pc);
......@@ -84,7 +85,7 @@ EXPORT_SYMBOL_GPL(ide_init_pc);
* and wait for it to be serviced.
*/
int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
struct ide_atapi_pc *pc)
struct ide_atapi_pc *pc, void *buf, unsigned int bufflen)
{
struct request *rq;
int error;
......@@ -93,8 +94,8 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
rq->cmd_type = REQ_TYPE_SPECIAL;
rq->special = (char *)pc;
if (pc->req_xfer) {
error = blk_rq_map_kern(drive->queue, rq, pc->buf, pc->req_xfer,
if (buf && bufflen) {
error = blk_rq_map_kern(drive->queue, rq, buf, bufflen,
GFP_NOIO);
if (error)
goto put_req;
......@@ -117,7 +118,7 @@ int ide_do_test_unit_ready(ide_drive_t *drive, struct gendisk *disk)
ide_init_pc(&pc);
pc.c[0] = TEST_UNIT_READY;
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
}
EXPORT_SYMBOL_GPL(ide_do_test_unit_ready);
......@@ -132,7 +133,7 @@ int ide_do_start_stop(ide_drive_t *drive, struct gendisk *disk, int start)
if (drive->media == ide_tape)
pc.flags |= PC_FLAG_WAIT_FOR_DSC;
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
}
EXPORT_SYMBOL_GPL(ide_do_start_stop);
......@@ -147,7 +148,7 @@ int ide_set_media_lock(ide_drive_t *drive, struct gendisk *disk, int on)
pc.c[0] = ALLOW_MEDIUM_REMOVAL;
pc.c[4] = on;
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
}
EXPORT_SYMBOL_GPL(ide_set_media_lock);
......@@ -172,8 +173,6 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
unsigned int cmd_len, sense_len;
int err;
debug_log("%s: enter\n", __func__);
switch (drive->media) {
case ide_floppy:
cmd_len = 255;
......@@ -201,8 +200,8 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
GFP_NOIO);
if (unlikely(err)) {
if (printk_ratelimit())
printk(KERN_WARNING "%s: failed to map sense buffer\n",
drive->name);
printk(KERN_WARNING PFX "%s: failed to map sense "
"buffer\n", drive->name);
return;
}
......@@ -223,7 +222,7 @@ int ide_queue_sense_rq(ide_drive_t *drive, void *special)
{
/* deferred failure from ide_prep_sense() */
if (!drive->sense_rq_armed) {
printk(KERN_WARNING "%s: failed queue sense request\n",
printk(KERN_WARNING PFX "%s: error queuing a sense request\n",
drive->name);
return -ENOMEM;
}
......@@ -255,8 +254,6 @@ void ide_retry_pc(ide_drive_t *drive)
/* init pc from sense_rq */
ide_init_pc(pc);
memcpy(pc->c, sense_rq->cmd, 12);
pc->buf = bio_data(sense_rq->bio); /* pointer to mapped address */
pc->req_xfer = blk_rq_bytes(sense_rq);
if (drive->media == ide_tape)
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC;
......@@ -298,7 +295,7 @@ int ide_cd_expiry(ide_drive_t *drive)
break;
default:
if (!(rq->cmd_flags & REQ_QUIET))
printk(KERN_INFO "cmd 0x%x timed out\n",
printk(KERN_INFO PFX "cmd 0x%x timed out\n",
rq->cmd[0]);
wait = 0;
break;
......@@ -331,6 +328,55 @@ void ide_read_bcount_and_ireason(ide_drive_t *drive, u16 *bcount, u8 *ireason)
}
EXPORT_SYMBOL_GPL(ide_read_bcount_and_ireason);
/*
* Check the contents of the interrupt reason register and attempt to recover if
* there are problems.
*
* Returns:
* - 0 if everything's ok
* - 1 if the request has to be terminated.
*/
int ide_check_ireason(ide_drive_t *drive, struct request *rq, int len,
int ireason, int rw)
{
ide_hwif_t *hwif = drive->hwif;
debug_log("ireason: 0x%x, rw: 0x%x\n", ireason, rw);
if (ireason == (!rw << 1))
return 0;
else if (ireason == (rw << 1)) {
printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
drive->name, __func__);
if (dev_is_idecd(drive))
ide_pad_transfer(drive, rw, len);
} else if (!rw && ireason == ATAPI_COD) {
if (dev_is_idecd(drive)) {
/*
* Some drives (ASUS) seem to tell us that status info
* is available. Just get it and ignore.
*/
(void)hwif->tp_ops->read_status(hwif);
return 0;
}
} else {
if (ireason & ATAPI_COD)
printk(KERN_ERR PFX "%s: CoD != 0 in %s\n", drive->name,
__func__);
/* drive wants a command packet, or invalid ireason... */
printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
drive->name, __func__, ireason);
}
if (dev_is_idecd(drive) && rq->cmd_type == REQ_TYPE_ATA_PC)
rq->cmd_flags |= REQ_FAILED;
return 1;
}
EXPORT_SYMBOL_GPL(ide_check_ireason);
/*
* This is the usual interrupt handler which will be called during a packet
* command. We will transfer some of the data (as requested by the drive)
......@@ -365,12 +411,12 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
if (rc || (drive->media == ide_tape && (stat & ATA_ERR))) {
if (drive->media == ide_floppy)
printk(KERN_ERR "%s: DMA %s error\n",
printk(KERN_ERR PFX "%s: DMA %s error\n",
drive->name, rq_data_dir(pc->rq)
? "write" : "read");
pc->flags |= PC_FLAG_DMA_ERROR;
} else
pc->xferred = pc->req_xfer;
rq->resid_len = 0;
debug_log("%s: DMA finished\n", drive->name);
}
......@@ -379,7 +425,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
int uptodate, error;
debug_log("Packet command completed, %d bytes transferred\n",
pc->xferred);
blk_rq_bytes(rq));
pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
......@@ -397,8 +443,8 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
pc->rq->errors++;
if (rq->cmd[0] == REQUEST_SENSE) {
printk(KERN_ERR "%s: I/O error in request sense"
" command\n", drive->name);
printk(KERN_ERR PFX "%s: I/O error in request "
"sense command\n", drive->name);
return ide_do_reset(drive);
}
......@@ -446,8 +492,8 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
printk(KERN_ERR "%s: The device wants to issue more interrupts "
"in DMA mode\n", drive->name);
printk(KERN_ERR PFX "%s: The device wants to issue more "
"interrupts in DMA mode\n", drive->name);
ide_dma_off(drive);
return ide_do_reset(drive);
}
......@@ -455,33 +501,22 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
/* Get the number of bytes to transfer on this interrupt. */
ide_read_bcount_and_ireason(drive, &bcount, &ireason);
if (ireason & ATAPI_COD) {
printk(KERN_ERR "%s: CoD != 0 in %s\n", drive->name, __func__);
if (ide_check_ireason(drive, rq, bcount, ireason, write))
return ide_do_reset(drive);
}
if (((ireason & ATAPI_IO) == ATAPI_IO) == write) {
/* Hopefully, we will never get here */
printk(KERN_ERR "%s: We wanted to %s, but the device wants us "
"to %s!\n", drive->name,
(ireason & ATAPI_IO) ? "Write" : "Read",
(ireason & ATAPI_IO) ? "Read" : "Write");
return ide_do_reset(drive);
}
done = min_t(unsigned int, bcount, cmd->nleft);
ide_pio_bytes(drive, cmd, write, done);
/* Update transferred byte count */
pc->xferred += done;
rq->resid_len -= done;
bcount -= done;
if (bcount)
ide_pad_transfer(drive, write, bcount);
debug_log("[cmd %x] transferred %d bytes, padded %d bytes\n",
rq->cmd[0], done, bcount);
debug_log("[cmd %x] transferred %d bytes, padded %d bytes, resid: %u\n",
rq->cmd[0], done, bcount, rq->resid_len);
/* And set the interrupt handler again */
ide_set_handler(drive, ide_pc_intr, timeout);
......@@ -515,13 +550,13 @@ static u8 ide_wait_ireason(ide_drive_t *drive, u8 ireason)
while (retries-- && ((ireason & ATAPI_COD) == 0 ||
(ireason & ATAPI_IO))) {
printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing "
printk(KERN_ERR PFX "%s: (IO,CoD != (0,1) while issuing "
"a packet command, retrying\n", drive->name);
udelay(100);
ireason = ide_read_ireason(drive);
if (retries == 0) {
printk(KERN_ERR "%s: (IO,CoD != (0,1) while issuing "
"a packet command, ignoring\n",
printk(KERN_ERR PFX "%s: (IO,CoD != (0,1) while issuing"
" a packet command, ignoring\n",
drive->name);
ireason |= ATAPI_COD;
ireason &= ~ATAPI_IO;
......@@ -552,7 +587,7 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
u8 ireason;
if (ide_wait_stat(&startstop, drive, ATA_DRQ, ATA_BUSY, WAIT_READY)) {
printk(KERN_ERR "%s: Strange, packet command initiated yet "
printk(KERN_ERR PFX "%s: Strange, packet command initiated yet "
"DRQ isn't asserted\n", drive->name);
return startstop;
}
......@@ -594,8 +629,8 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
ireason = ide_wait_ireason(drive, ireason);
if ((ireason & ATAPI_COD) == 0 || (ireason & ATAPI_IO)) {
printk(KERN_ERR "%s: (IO,CoD) != (0,1) while issuing "
"a packet command\n", drive->name);
printk(KERN_ERR PFX "%s: (IO,CoD) != (0,1) while "
"issuing a packet command\n", drive->name);
return ide_do_reset(drive);
}
......@@ -633,7 +668,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd)
ide_hwif_t *hwif = drive->hwif;
ide_expiry_t *expiry = NULL;
struct request *rq = hwif->rq;
unsigned int timeout;
unsigned int timeout, bytes;
u16 bcount;
u8 valid_tf;
u8 drq_int = !!(drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT);
......@@ -649,13 +684,14 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd)
} else {
pc = drive->pc;
/* We haven't transferred any data yet */
pc->xferred = 0;
valid_tf = IDE_VALID_DEVICE;
bcount = ((drive->media == ide_tape) ?
pc->req_xfer :
min(pc->req_xfer, 63 * 1024));
bytes = blk_rq_bytes(rq);
bcount = ((drive->media == ide_tape) ? bytes
: min_t(unsigned int,
bytes, 63 * 1024));
/* We haven't transferred any data yet */
rq->resid_len = bcount;
if (pc->flags & PC_FLAG_DMA_ERROR) {
pc->flags &= ~PC_FLAG_DMA_ERROR;
......
drivers/ide/ide-cd.c
View file @ 8dcce408
......@@ -92,16 +92,16 @@ static void cdrom_saw_media_change(ide_drive_t *drive)
drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
}
static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
struct request_sense *sense)
static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
{
struct request_sense *sense = &drive->sense_data;
int log = 0;
ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
return 0;
ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
switch (sense->sense_key) {
case NO_SENSE:
case RECOVERED_ERROR:
......@@ -140,12 +140,12 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
}
static void cdrom_analyze_sense_data(ide_drive_t *drive,
struct request *failed_command,
struct request_sense *sense)
struct request *failed_command)
{
struct request_sense *sense = &drive->sense_data;
struct cdrom_info *info = drive->driver_data;
unsigned long sector;
unsigned long bio_sectors;
struct cdrom_info *info = drive->driver_data;
ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
sense->error_code, sense->sense_key);
......@@ -154,7 +154,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive,
ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
failed_command->cmd[0]);
if (!cdrom_log_sense(drive, failed_command, sense))
if (!cdrom_log_sense(drive, failed_command))
return;
/*
......@@ -225,15 +225,14 @@ static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
* sense pointer set.
*/
memcpy(failed->sense, sense, 18);
sense = failed->sense;
failed->sense_len = rq->sense_len;
}
cdrom_analyze_sense_data(drive, failed, sense);
cdrom_analyze_sense_data(drive, failed);
if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed)))
BUG();
} else
cdrom_analyze_sense_data(drive, NULL, sense);
cdrom_analyze_sense_data(drive, NULL);
}
......@@ -410,50 +409,6 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
return 2;
}
/*
* Check the contents of the interrupt reason register from the cdrom
* and attempt to recover if there are problems. Returns 0 if everything's
* ok; nonzero if the request has been terminated.
*/
static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
int len, int ireason, int rw)
{
ide_hwif_t *hwif = drive->hwif;
ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
/*
* ireason == 0: the drive wants to receive data from us
* ireason == 2: the drive is expecting to transfer data to us
*/
if (ireason == (!rw << 1))
return 0;
else if (ireason == (rw << 1)) {
/* whoops... */
printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
drive->name, __func__);
ide_pad_transfer(drive, rw, len);
} else if (rw == 0 && ireason == 1) {
/*
* Some drives (ASUS) seem to tell us that status info is
* available. Just get it and ignore.
*/
(void)hwif->tp_ops->read_status(hwif);
return 0;
} else {
/* drive wants a command packet, or invalid ireason... */
printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
drive->name, __func__, ireason);
}
if (rq->cmd_type == REQ_TYPE_ATA_PC)
rq->cmd_flags |= REQ_FAILED;
return -1;
}
static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
{
struct request *rq = cmd->rq;
......@@ -645,8 +600,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
goto out_end;
}
/* check which way to transfer data */
rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
rc = ide_check_ireason(drive, rq, len, ireason, write);
if (rc)
goto out_end;
......
drivers/ide/ide-floppy.c
View file @ 8dcce408
......@@ -77,7 +77,8 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
(rq && blk_pc_request(rq)))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
u8 *buf = pc->buf;
u8 *buf = bio_data(rq->bio);
if (!pc->error) {
floppy->sense_key = buf[2] & 0x0F;
......@@ -209,8 +210,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
pc->rq = rq;
if (rq->cmd_flags & REQ_RW)
pc->flags |= PC_FLAG_WRITING;
pc->buf = NULL;
pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
pc->flags |= PC_FLAG_DMA_OK;
}
......@@ -225,9 +225,6 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
if (rq_data_dir(rq) == WRITE)
pc->flags |= PC_FLAG_WRITING;
}
/* pio will be performed by ide_pio_bytes() which handles sg fine */
pc->buf = NULL;
pc->req_xfer = pc->buf_size = blk_rq_bytes(rq);
}
static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
......@@ -286,8 +283,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
cmd.rq = rq;
if (blk_fs_request(rq) || pc->req_xfer) {
ide_init_sg_cmd(&cmd, pc->req_xfer);
if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
......@@ -311,33 +308,33 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
{
struct ide_disk_obj *floppy = drive->driver_data;
struct gendisk *disk = floppy->disk;
u8 *page;
u8 *page, buf[40];
int capacity, lba_capacity;
u16 transfer_rate, sector_size, cyls, rpm;
u8 heads, sectors;
ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
if (ide_queue_pc_tail(drive, disk, pc)) {
if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
printk(KERN_ERR PFX "Can't get flexible disk page params\n");
return 1;
}
if (pc->buf[3] & 0x80)
if (buf[3] & 0x80)
drive->dev_flags |= IDE_DFLAG_WP;
else
drive->dev_flags &= ~IDE_DFLAG_WP;
set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
page = &pc->buf[8];
page = &buf[8];
transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]);
sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]);
cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]);
rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]);
heads = pc->buf[8 + 4];
sectors = pc->buf[8 + 5];
transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]);
cyls = be16_to_cpup((__be16 *)&buf[8 + 8]);
rpm = be16_to_cpup((__be16 *)&buf[8 + 28]);
heads = buf[8 + 4];
sectors = buf[8 + 5];
capacity = cyls * heads * sectors * sector_size;
......@@ -387,22 +384,19 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
drive->capacity64 = 0;
ide_floppy_create_read_capacity_cmd(&pc);
pc.buf = &pc_buf[0];
pc.buf_size = sizeof(pc_buf);
if (ide_queue_pc_tail(drive, disk, &pc)) {
if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
printk(KERN_ERR PFX "Can't get floppy parameters\n");
return 1;
}
header_len = pc.buf[3];
cap_desc = &pc.buf[4];
header_len = pc_buf[3];
cap_desc = &pc_buf[4];
desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
for (i = 0; i < desc_cnt; i++) {
unsigned int desc_start = 4 + i*8;
blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
"%d sector size",
......@@ -415,7 +409,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
* the code below is valid only for the 1st descriptor, ie i=0
*/
switch (pc.buf[desc_start + 4] & 0x03) {
switch (pc_buf[desc_start + 4] & 0x03) {
/* Clik! drive returns this instead of CAPACITY_CURRENT */
case CAPACITY_UNFORMATTED:
if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
......@@ -464,7 +458,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
break;
}
ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
pc.buf[desc_start + 4] & 0x03);
pc_buf[desc_start + 4] & 0x03);
}
/* Clik! disk does not support get_flexible_disk_page */
......
drivers/ide/ide-floppy_ioctl.c
View file @ 8dcce408
......@@ -47,15 +47,13 @@ static int ide_floppy_get_format_capacities(ide_drive_t *drive,
return -EINVAL;
ide_floppy_create_read_capacity_cmd(pc);
pc->buf = &pc_buf[0];
pc->buf_size = sizeof(pc_buf);
if (ide_queue_pc_tail(drive, floppy->disk, pc)) {
if (ide_queue_pc_tail(drive, floppy->disk, pc, pc_buf, pc->req_xfer)) {
printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
return -EIO;
}
header_len = pc->buf[3];
header_len = pc_buf[3];
desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
u_index = 0;
......@@ -72,8 +70,8 @@ static int ide_floppy_get_format_capacities(ide_drive_t *drive,
if (u_index >= u_array_size)
break; /* User-supplied buffer too small */
blocks = be32_to_cpup((__be32 *)&pc->buf[desc_start]);
length = be16_to_cpup((__be16 *)&pc->buf[desc_start + 6]);
blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
if (put_user(blocks, argp))
return -EFAULT;
......@@ -94,40 +92,42 @@ static int ide_floppy_get_format_capacities(ide_drive_t *drive,
return 0;
}
static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
int l, int flags)
static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc,
u8 *buf, int b, int l,
int flags)
{
ide_init_pc(pc);
pc->c[0] = GPCMD_FORMAT_UNIT;
pc->c[1] = 0x17;
memset(pc->buf, 0, 12);
pc->buf[1] = 0xA2;
memset(buf, 0, 12);
buf[1] = 0xA2;
/* Default format list header, u8 1: FOV/DCRT/IMM bits set */
if (flags & 1) /* Verify bit on... */
pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
pc->buf[3] = 8;
buf[1] ^= 0x20; /* ... turn off DCRT bit */
buf[3] = 8;
put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
pc->buf_size = 12;
put_unaligned(cpu_to_be32(b), (unsigned int *)(&buf[4]));
put_unaligned(cpu_to_be32(l), (unsigned int *)(&buf[8]));
pc->req_xfer = 12;
pc->flags |= PC_FLAG_WRITING;
}
static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)
{
struct ide_disk_obj *floppy = drive->driver_data;
u8 buf[20];
drive->atapi_flags &= ~IDE_AFLAG_SRFP;
ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_CAPABILITIES_PAGE);
pc->flags |= PC_FLAG_SUPPRESS_ERROR;
if (ide_queue_pc_tail(drive, floppy->disk, pc))
if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
return 1;
if (pc->buf[8 + 2] & 0x40)
if (buf[8 + 2] & 0x40)
drive->atapi_flags |= IDE_AFLAG_SRFP;
return 0;
......@@ -137,6 +137,7 @@ static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,
int __user *arg)
{
struct ide_disk_obj *floppy = drive->driver_data;
u8 buf[12];
int blocks, length, flags, err = 0;
if (floppy->openers > 1) {
......@@ -170,9 +171,9 @@ static int ide_floppy_format_unit(ide_drive_t *drive, struct ide_atapi_pc *pc,
}
ide_floppy_get_sfrp_bit(drive, pc);
ide_floppy_create_format_unit_cmd(pc, blocks, length, flags);
ide_floppy_create_format_unit_cmd(pc, buf, blocks, length, flags);
if (ide_queue_pc_tail(drive, floppy->disk, pc))
if (ide_queue_pc_tail(drive, floppy->disk, pc, buf, pc->req_xfer))
err = -EIO;
out:
......@@ -196,11 +197,13 @@ static int ide_floppy_get_format_progress(ide_drive_t *drive,
int __user *arg)
{
struct ide_disk_obj *floppy = drive->driver_data;
u8 sense_buf[18];
int progress_indication = 0x10000;
if (drive->atapi_flags & IDE_AFLAG_SRFP) {
ide_create_request_sense_cmd(drive, pc);
if (ide_queue_pc_tail(drive, floppy->disk, pc))
if (ide_queue_pc_tail(drive, floppy->disk, pc, sense_buf,
pc->req_xfer))
return -EIO;
if (floppy->sense_key == 2 &&
......
drivers/ide/ide-tape.c
View file @ 8dcce408
......@@ -279,10 +279,12 @@ static void ide_tape_put(struct ide_tape_obj *tape)
* called on each failed packet command retry to analyze the request sense. We
* currently do not utilize this information.
*/
static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
static void idetape_analyze_error(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = drive->failed_pc;
struct request *rq = drive->hwif->rq;
u8 *sense = bio_data(rq->bio);
tape->sense_key = sense[2] & 0xF;
tape->asc = sense[12];
......@@ -291,11 +293,9 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
debug_log(DBG_ERR, "pc = %x, sense key = %x, asc = %x, ascq = %x\n",
pc->c[0], tape->sense_key, tape->asc, tape->ascq);
/* Correct pc->xferred by asking the tape. */
/* correct remaining bytes to transfer */
if (pc->flags & PC_FLAG_DMA_ERROR)
pc->xferred = pc->req_xfer -
tape->blk_size *
get_unaligned_be32(&sense[3]);
rq->resid_len = tape->blk_size * get_unaligned_be32(&sense[3]);
/*
* If error was the result of a zero-length read or write command,
......@@ -329,7 +329,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
pc->flags |= PC_FLAG_ABORT;
}
if (!(pc->flags & PC_FLAG_ABORT) &&
pc->xferred)
(blk_rq_bytes(rq) - rq->resid_len))
pc->retries = IDETAPE_MAX_PC_RETRIES + 1;
}
}
......@@ -354,12 +354,13 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)
if (pc->c[0] == REQUEST_SENSE) {
if (uptodate)
idetape_analyze_error(drive, pc->buf);
idetape_analyze_error(drive);
else
printk(KERN_ERR "ide-tape: Error in REQUEST SENSE "
"itself - Aborting request!\n");
} else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {
int blocks = pc->xferred / tape->blk_size;
unsigned int blocks =
(blk_rq_bytes(rq) - rq->resid_len) / tape->blk_size;
tape->avg_size += blocks * tape->blk_size;
......@@ -371,38 +372,12 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)
}
tape->first_frame += blocks;
rq->resid_len -= blocks * tape->blk_size;
if (pc->error) {
uptodate = 0;
err = pc->error;
}
} else if (pc->c[0] == READ_POSITION && uptodate) {
u8 *readpos = pc->buf;
debug_log(DBG_SENSE, "BOP - %s\n",
(readpos[0] & 0x80) ? "Yes" : "No");
debug_log(DBG_SENSE, "EOP - %s\n",
(readpos[0] & 0x40) ? "Yes" : "No");
if (readpos[0] & 0x4) {
printk(KERN_INFO "ide-tape: Block location is unknown"
"to the tape\n");
clear_bit(ilog2(IDE_AFLAG_ADDRESS_VALID),
&drive->atapi_flags);
uptodate = 0;
err = IDE_DRV_ERROR_GENERAL;
} else {
debug_log(DBG_SENSE, "Block Location - %u\n",
be32_to_cpup((__be32 *)&readpos[4]));
tape->partition = readpos[1];
tape->first_frame = be32_to_cpup((__be32 *)&readpos[4]);
set_bit(ilog2(IDE_AFLAG_ADDRESS_VALID),
&drive->atapi_flags);
}
}
rq->errors = err;
return uptodate;
......@@ -477,6 +452,7 @@ static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive,
struct ide_atapi_pc *pc)
{
idetape_tape_t *tape = drive->driver_data;
struct request *rq = drive->hwif->rq;
if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
drive->failed_pc = pc;
......@@ -486,7 +462,6 @@ static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive,
if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
(pc->flags & PC_FLAG_ABORT)) {
unsigned int done = blk_rq_bytes(drive->hwif->rq);
/*
* We will "abort" retrying a packet command in case legitimate
......@@ -510,7 +485,7 @@ static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive,
drive->failed_pc = NULL;
drive->pc_callback(drive, 0);
ide_complete_rq(drive, -EIO, done);
ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
return ide_stopped;
}
debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]);
......@@ -579,15 +554,13 @@ static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
struct ide_atapi_pc *pc, struct request *rq,
u8 opcode)
{
unsigned int length = blk_rq_sectors(rq);
unsigned int length = blk_rq_sectors(rq) / (tape->blk_size >> 9);
ide_init_pc(pc);
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->buf = NULL;
pc->buf_size = length * tape->blk_size;
pc->req_xfer = pc->buf_size;
if (pc->req_xfer == tape->buffer_size)
if (blk_rq_bytes(rq) == tape->buffer_size)
pc->flags |= PC_FLAG_DMA_OK;
if (opcode == READ_6)
......@@ -713,7 +686,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
cmd.rq = rq;
ide_init_sg_cmd(&cmd, pc->req_xfer);
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
return ide_tape_issue_pc(drive, &cmd, pc);
......@@ -767,33 +740,53 @@ static int idetape_flush_tape_buffers(ide_drive_t *drive)
int rc;
idetape_create_write_filemark_cmd(drive, &pc, 0);
rc = ide_queue_pc_tail(drive, tape->disk, &pc);
rc = ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0);
if (rc)
return rc;
idetape_wait_ready(drive, 60 * 5 * HZ);
return 0;
}
static void idetape_create_read_position_cmd(struct ide_atapi_pc *pc)
{
ide_init_pc(pc);
pc->c[0] = READ_POSITION;
pc->req_xfer = 20;
}
static int idetape_read_position(ide_drive_t *drive)
static int ide_tape_read_position(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc pc;
int position;
u8 buf[20];
debug_log(DBG_PROCS, "Enter %s\n", __func__);
idetape_create_read_position_cmd(&pc);
if (ide_queue_pc_tail(drive, tape->disk, &pc))
/* prep cmd */
ide_init_pc(&pc);
pc.c[0] = READ_POSITION;
pc.req_xfer = 20;
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer))
return -1;
position = tape->first_frame;
return position;
if (!pc.error) {
debug_log(DBG_SENSE, "BOP - %s\n",
(buf[0] & 0x80) ? "Yes" : "No");
debug_log(DBG_SENSE, "EOP - %s\n",
(buf[0] & 0x40) ? "Yes" : "No");
if (buf[0] & 0x4) {
printk(KERN_INFO "ide-tape: Block location is unknown"
"to the tape\n");
clear_bit(ilog2(IDE_AFLAG_ADDRESS_VALID),
&drive->atapi_flags);
return -1;
} else {
debug_log(DBG_SENSE, "Block Location - %u\n",
be32_to_cpup((__be32 *)&buf[4]));
tape->partition = buf[1];
tape->first_frame = be32_to_cpup((__be32 *)&buf[4]);
set_bit(ilog2(IDE_AFLAG_ADDRESS_VALID),
&drive->atapi_flags);
}
}
return tape->first_frame;
}
static void idetape_create_locate_cmd(ide_drive_t *drive,
......@@ -836,19 +829,21 @@ static int idetape_position_tape(ide_drive_t *drive, unsigned int block,
{
idetape_tape_t *tape = drive->driver_data;
struct gendisk *disk = tape->disk;
int retval;
int ret;
struct ide_atapi_pc pc;
if (tape->chrdev_dir == IDETAPE_DIR_READ)
__ide_tape_discard_merge_buffer(drive);
idetape_wait_ready(drive, 60 * 5 * HZ);
idetape_create_locate_cmd(drive, &pc, block, partition, skip);
retval = ide_queue_pc_tail(drive, disk, &pc);
if (retval)
return (retval);
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
if (ret)
return ret;
idetape_create_read_position_cmd(&pc);
return ide_queue_pc_tail(drive, disk, &pc);
ret = ide_tape_read_position(drive);
if (ret < 0)
return ret;
return 0;
}
static void ide_tape_discard_merge_buffer(ide_drive_t *drive,
......@@ -859,7 +854,7 @@ static void ide_tape_discard_merge_buffer(ide_drive_t *drive,
__ide_tape_discard_merge_buffer(drive);
if (restore_position) {
position = idetape_read_position(drive);
position = ide_tape_read_position(drive);
seek = position > 0 ? position : 0;
if (idetape_position_tape(drive, seek, 0, 0)) {
printk(KERN_INFO "ide-tape: %s: position_tape failed in"
......@@ -1039,20 +1034,19 @@ static int idetape_rewind_tape(ide_drive_t *drive)
{
struct ide_tape_obj *tape = drive->driver_data;
struct gendisk *disk = tape->disk;
int retval;
struct ide_atapi_pc pc;
int ret;
debug_log(DBG_SENSE, "Enter %s\n", __func__);
idetape_create_rewind_cmd(drive, &pc);
retval = ide_queue_pc_tail(drive, disk, &pc);
if (retval)
return retval;
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
if (ret)
return ret;
idetape_create_read_position_cmd(&pc);
retval = ide_queue_pc_tail(drive, disk, &pc);
if (retval)
return retval;
ret = ide_tape_read_position(drive);
if (ret < 0)
return ret;
return 0;
}
......@@ -1119,7 +1113,7 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op,
case MTBSF:
idetape_create_space_cmd(&pc, mt_count - count,
IDETAPE_SPACE_OVER_FILEMARK);
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
case MTFSFM:
case MTBSFM:
if (!sprev)
......@@ -1259,7 +1253,7 @@ static int idetape_write_filemark(ide_drive_t *drive)
/* Write a filemark */
idetape_create_write_filemark_cmd(drive, &pc, 1);
if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
if (ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0)) {
printk(KERN_ERR "ide-tape: Couldn't write a filemark\n");
return -EIO;
}
......@@ -1345,11 +1339,11 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK);
case MTEOM:
idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
case MTERASE:
(void)idetape_rewind_tape(drive);
idetape_create_erase_cmd(&pc);
return ide_queue_pc_tail(drive, disk, &pc);
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
case MTSETBLK:
if (mt_count) {
if (mt_count < tape->blk_size ||
......@@ -1415,7 +1409,7 @@ static int idetape_chrdev_ioctl(struct inode *inode, struct file *file,
if (cmd == MTIOCGET || cmd == MTIOCPOS) {
block_offset = tape->valid /
(tape->blk_size * tape->user_bs_factor);
position = idetape_read_position(drive);
position = ide_tape_read_position(drive);
if (position < 0)
return -EIO;
}
......@@ -1458,9 +1452,10 @@ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc pc;
u8 buf[12];
idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);
if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: Can't get block descriptor\n");
if (tape->blk_size == 0) {
printk(KERN_WARNING "ide-tape: Cannot deal with zero "
......@@ -1469,10 +1464,10 @@ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive)
}
return;
}
tape->blk_size = (pc.buf[4 + 5] << 16) +
(pc.buf[4 + 6] << 8) +
pc.buf[4 + 7];
tape->drv_write_prot = (pc.buf[2] & 0x80) >> 7;
tape->blk_size = (buf[4 + 5] << 16) +
(buf[4 + 6] << 8) +
buf[4 + 7];
tape->drv_write_prot = (buf[2] & 0x80) >> 7;
}
static int idetape_chrdev_open(struct inode *inode, struct file *filp)
......@@ -1615,17 +1610,14 @@ static void idetape_get_inquiry_results(ide_drive_t *drive)
char fw_rev[4], vendor_id[8], product_id[16];
idetape_create_inquiry_cmd(&pc);
pc.buf = &pc_buf[0];
pc.buf_size = sizeof(pc_buf);
if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
if (ide_queue_pc_tail(drive, tape->disk, &pc, pc_buf, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results\n",
tape->name);
return;
}
memcpy(vendor_id, &pc.buf[8], 8);
memcpy(product_id, &pc.buf[16], 16);
memcpy(fw_rev, &pc.buf[32], 4);
memcpy(vendor_id, &pc_buf[8], 8);
memcpy(product_id, &pc_buf[16], 16);
memcpy(fw_rev, &pc_buf[32], 4);
ide_fixstring(vendor_id, 8, 0);
ide_fixstring(product_id, 16, 0);
......@@ -1643,11 +1635,11 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc pc;
u8 *caps;
u8 buf[24], *caps;
u8 speed, max_speed;
idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE);
if (ide_queue_pc_tail(drive, tape->disk, &pc)) {
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) {
printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming"
" some default values\n");
tape->blk_size = 512;
......@@ -1656,7 +1648,7 @@ static void idetape_get_mode_sense_results(ide_drive_t *drive)
put_unaligned(6*52, (u16 *)&tape->caps[16]);
return;
}
caps = pc.buf + 4 + pc.buf[3];
caps = buf + 4 + buf[3];
/* convert to host order and save for later use */
speed = be16_to_cpup((__be16 *)&caps[14]);
......
include/linux/ide.h
View file @ 8dcce408
......@@ -331,11 +331,6 @@ enum {
PC_FLAG_WRITING = (1 << 6),
};
/*
* With each packet command, we allocate a buffer of IDE_PC_BUFFER_SIZE bytes.
* This is used for several packet commands (not for READ/WRITE commands).
*/
#define IDE_PC_BUFFER_SIZE 64
#define ATAPI_WAIT_PC (60 * HZ)
struct ide_atapi_pc {
......@@ -347,12 +342,6 @@ struct ide_atapi_pc {
/* bytes to transfer */
int req_xfer;
/* bytes actually transferred */
int xferred;
/* data buffer */
u8 *buf;
int buf_size;
/* the corresponding request */
struct request *rq;
......@@ -363,8 +352,6 @@ struct ide_atapi_pc {
* those are more or less driver-specific and some of them are subject
* to change/removal later.
*/
u8 pc_buf[IDE_PC_BUFFER_SIZE];
unsigned long timeout;
};
......@@ -1130,6 +1117,8 @@ void SELECT_MASK(ide_drive_t *, int);
u8 ide_read_error(ide_drive_t *);
void ide_read_bcount_and_ireason(ide_drive_t *, u16 *, u8 *);
int ide_check_ireason(ide_drive_t *, struct request *, int, int, int);
int ide_check_atapi_device(ide_drive_t *, const char *);
void ide_init_pc(struct ide_atapi_pc *);
......@@ -1154,7 +1143,8 @@ enum {
REQ_IDETAPE_WRITE = (1 << 3),
};
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *);
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
void *, unsigned int);
int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);
......
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