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Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

Browse Source 
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (33 commits)
  ide-cd: remove dead dsc_overlap setting
  ide: push local_irq_{save,restore}() to do_identify()
  ide: remove superfluous local_irq_{save,restore}() from ide_dump_status()
  ide: move legacy ISA/VLB ports handling to ide-legacy.c (v2)
  ide: move Power Management support to ide-pm.c
  ide: use ATA_DMA_* defines in ide-dma-sff.c
  ide: checkpatch.pl fixes for ide-lib.c
  ide: remove inline tags from ide-probe.c
  ide: remove redundant code from ide_end_drive_cmd()
  ide: struct device - replace bus_id with dev_name(), dev_set_name()
  ide: rework handling of serialized ports (v2)
  cy82c693: remove superfluous ide_cy82c693 chipset type
  trm290: add IDE_HFLAG_TRM290 host flag
  ide: add ->max_sectors field to struct ide_port_info
  rz1000: apply chipset quirks early (v2)
  ide: always set nIEN on idle devices
  ide: fix ->quirk_list checking in ide_do_request()
  gayle: set IDE_HFLAG_SERIALIZE explictly
  cmd64x: set IDE_HFLAG_SERIALIZE explictly for CMD646
  ali14xx: doesn't use shared IRQs
  ...
This commit is contained in:
Linus Torvalds 2008-12-30 17:34:37 -08:00
commit 74a6d0f064
28 changed files with 637 additions and 785 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/ide/Kconfig
View File

@ -62,6 +62,9 @@ config IDE_TIMINGS
config IDE_ATAPI
bool
config IDE_LEGACY
bool
config BLK_DEV_IDE_SATA
bool "Support for SATA (deprecated; conflicts with libata SATA driver)"
default n
@ -856,6 +859,7 @@ config BLK_DEV_4DRIVES
config BLK_DEV_ALI14XX
tristate "ALI M14xx support"
select IDE_TIMINGS
select IDE_LEGACY
help
This driver is enabled at runtime using the "ali14xx.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@ -866,6 +870,7 @@ config BLK_DEV_ALI14XX
config BLK_DEV_DTC2278
tristate "DTC-2278 support"
select IDE_LEGACY
help
This driver is enabled at runtime using the "dtc2278.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@ -876,6 +881,7 @@ config BLK_DEV_DTC2278
config BLK_DEV_HT6560B
tristate "Holtek HT6560B support"
select IDE_TIMINGS
select IDE_LEGACY
help
This driver is enabled at runtime using the "ht6560b.probe" kernel
boot parameter. It enables support for the secondary IDE interface
@ -886,6 +892,7 @@ config BLK_DEV_HT6560B
config BLK_DEV_QD65XX
tristate "QDI QD65xx support"
select IDE_TIMINGS
select IDE_LEGACY
help
This driver is enabled at runtime using the "qd65xx.probe" kernel
boot parameter. It permits faster I/O speeds to be set. See the
@ -894,6 +901,7 @@ config BLK_DEV_QD65XX
config BLK_DEV_UMC8672
tristate "UMC-8672 support"
select IDE_LEGACY
help
This driver is enabled at runtime using the "umc8672.probe" kernel
boot parameter. It enables support for the secondary IDE interface

3
drivers/ide/Makefile
View File

@ -5,7 +5,7 @@
EXTRA_CFLAGS += -Idrivers/ide
ide-core-y += ide.o ide-ioctls.o ide-io.o ide-iops.o ide-lib.o ide-probe.o \
ide-taskfile.o ide-park.o ide-pio-blacklist.o
ide-taskfile.o ide-pm.o ide-park.o ide-pio-blacklist.o
# core IDE code
ide-core-$(CONFIG_IDE_TIMINGS) += ide-timings.o
@ -15,6 +15,7 @@ ide-core-$(CONFIG_BLK_DEV_IDEDMA) += ide-dma.o
ide-core-$(CONFIG_BLK_DEV_IDEDMA_SFF) += ide-dma-sff.o
ide-core-$(CONFIG_IDE_PROC_FS) += ide-proc.o
ide-core-$(CONFIG_BLK_DEV_IDEACPI) += ide-acpi.o
ide-core-$(CONFIG_IDE_LEGACY) += ide-legacy.o
obj-$(CONFIG_IDE) += ide-core.o

4
drivers/ide/cmd64x.c
View File

@ -424,10 +424,10 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
.name = DRV_NAME,
.init_chipset = init_chipset_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.chipset = ide_cmd646,
.port_ops = &cmd64x_port_ops,
.dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.host_flags = IDE_HFLAG_SERIALIZE |
IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
.mwdma_mask = ATA_MWDMA2,
.udma_mask = ATA_UDMA2,

1
drivers/ide/cy82c693.c
View File

@ -292,7 +292,6 @@ static const struct ide_port_info cy82c693_chipset __devinitdata = {
.name = DRV_NAME,
.init_iops = init_iops_cy82c693,
.port_ops = &cy82c693_port_ops,
.chipset = ide_cy82c693,
.host_flags = IDE_HFLAG_SINGLE,
.pio_mask = ATA_PIO4,
.swdma_mask = ATA_SWDMA2,

6
drivers/ide/gayle.c
View File

@ -117,6 +117,10 @@ static void __init gayle_setup_ports(hw_regs_t *hw, unsigned long base,
hw->chipset = ide_generic;
}
static const struct ide_port_info gayle_port_info = {
.host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA,
};
/*
* Probe for a Gayle IDE interface (and optionally for an IDE doubler)
*/
@ -178,7 +182,7 @@ found:
hws[i] = &hw[i];
}
rc = ide_host_add(NULL, hws, NULL);
rc = ide_host_add(&gayle_port_info, hws, NULL);
if (rc)
release_mem_region(res_start, res_n);

8
drivers/ide/hpt366.c
View File

@ -135,7 +135,6 @@
/* various tuning parameters */
#define HPT_RESET_STATE_ENGINE
#undef HPT_DELAY_INTERRUPT
#define HPT_SERIALIZE_IO 0
static const char *quirk_drives[] = {
"QUANTUM FIREBALLlct08 08",
@ -1288,7 +1287,6 @@ static u8 hpt3xx_cable_detect(ide_hwif_t *hwif)
static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
{
struct hpt_info *info = hpt3xx_get_info(hwif->dev);
int serialize = HPT_SERIALIZE_IO;
u8 chip_type = info->chip_type;
/* Cache the channel's MISC. control registers' offset */
@ -1305,13 +1303,9 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
* Clock is shared between the channels,
* so we'll have to serialize them... :-(
*/
serialize = 1;
hwif->host->host_flags |= IDE_HFLAG_SERIALIZE;
hwif->rw_disk = &hpt3xxn_rw_disk;
}
/* Serialize access to this device if needed */
if (serialize && hwif->mate)
hwif->serialized = hwif->mate->serialized = 1;
}
static int __devinit init_dma_hpt366(ide_hwif_t *hwif,

4
drivers/ide/ide-acpi.c
View File

@ -615,10 +615,10 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
in_params[0].buffer.length = sizeof(struct GTM_buffer);
in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
in_params[1].type = ACPI_TYPE_BUFFER;
in_params[1].buffer.length = sizeof(ATA_ID_WORDS * 2);
in_params[1].buffer.length = ATA_ID_WORDS * 2;
in_params[1].buffer.pointer = (u8 *)&master->idbuff;
in_params[2].type = ACPI_TYPE_BUFFER;
in_params[2].buffer.length = sizeof(ATA_ID_WORDS * 2);
in_params[2].buffer.length = ATA_ID_WORDS * 2;
in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
/* Output buffer: _STM has no output */

142
drivers/ide/ide-cd.c
View File

@ -262,7 +262,6 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
struct request *failed = (struct request *) rq->buffer;
struct cdrom_info *info = drive->driver_data;
void *sense = &info->sense_data;
unsigned long flags;
if (failed) {
if (failed->sense) {
@ -278,11 +277,9 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
failed->hard_nr_sectors))
BUG();
} else {
spin_lock_irqsave(&ide_lock, flags);
if (__blk_end_request(failed, -EIO,
failed->data_len))
if (blk_end_request(failed, -EIO,
failed->data_len))
BUG();
spin_unlock_irqrestore(&ide_lock, flags);
}
} else
cdrom_analyze_sense_data(drive, NULL, sense);
@ -317,7 +314,8 @@ static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->hwgroup->rq;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
struct request *rq = hwgroup->rq;
int stat, err, sense_key;
/* check for errors */
@ -426,16 +424,17 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
if (time_after(jiffies, info->write_timeout))
do_end_request = 1;
else {
struct request_queue *q = drive->queue;
unsigned long flags;
/*
* take a breather relying on the unplug
* timer to kick us again
*/
spin_lock_irqsave(&ide_lock, flags);
blk_plug_device(drive->queue);
spin_unlock_irqrestore(&ide_lock,
flags);
spin_lock_irqsave(q->queue_lock, flags);
blk_plug_device(q);
spin_unlock_irqrestore(q->queue_lock, flags);
return 1;
}
}
@ -504,12 +503,14 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
end_request:
if (stat & ATA_ERR) {
struct request_queue *q = drive->queue;
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(q->queue_lock, flags);
blkdev_dequeue_request(rq);
HWGROUP(drive)->rq = NULL;
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(q->queue_lock, flags);
hwgroup->rq = NULL;
cdrom_queue_request_sense(drive, rq->sense, rq);
} else
@ -773,52 +774,6 @@ static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive)
return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
}
#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */
#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */
#define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */
static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
{
struct cdrom_info *info = drive->driver_data;
int stat;
static int retry = 10;
ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
if (cdrom_decode_status(drive, 0, &stat))
return ide_stopped;
drive->atapi_flags |= IDE_AFLAG_SEEKING;
if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) {
if (--retry == 0)
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
}
return ide_stopped;
}
static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq)
{
sector_t frame = rq->sector;
ide_debug_log(IDE_DBG_FUNC, "Call %s\n", __func__);
sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS);
memset(rq->cmd, 0, BLK_MAX_CDB);
rq->cmd[0] = GPCMD_SEEK;
put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]);
rq->timeout = ATAPI_WAIT_PC;
}
static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
{
struct request *rq = drive->hwif->hwgroup->rq;
return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
}
/*
* Fix up a possibly partially-processed request so that we can start it over
* entirely, or even put it back on the request queue.
@ -950,7 +905,8 @@ static int cdrom_newpc_intr_dummy_cb(struct request *rq)
static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = HWGROUP(drive)->rq;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
struct request *rq = hwgroup->rq;
xfer_func_t *xferfunc;
ide_expiry_t *expiry = NULL;
int dma_error = 0, dma, stat, thislen, uptodate = 0;
@ -1148,17 +1104,15 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
end_request:
if (blk_pc_request(rq)) {
unsigned long flags;
unsigned int dlen = rq->data_len;
if (dma)
rq->data_len = 0;
spin_lock_irqsave(&ide_lock, flags);
if (__blk_end_request(rq, 0, dlen))
if (blk_end_request(rq, 0, dlen))
BUG();
HWGROUP(drive)->rq = NULL;
spin_unlock_irqrestore(&ide_lock, flags);
hwgroup->rq = NULL;
} else {
if (!uptodate)
rq->cmd_flags |= REQ_FAILED;
@ -1260,7 +1214,6 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
sector_t block)
{
struct cdrom_info *info = drive->driver_data;
ide_handler_t *fn;
int xferlen;
@ -1270,44 +1223,14 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
(unsigned long long)block);
if (blk_fs_request(rq)) {
if (drive->atapi_flags & IDE_AFLAG_SEEKING) {
ide_hwif_t *hwif = drive->hwif;
unsigned long elapsed = jiffies - info->start_seek;
int stat = hwif->tp_ops->read_status(hwif);
xferlen = 32768;
fn = cdrom_start_rw_cont;
if ((stat & ATA_DSC) != ATA_DSC) {
if (elapsed < IDECD_SEEK_TIMEOUT) {
ide_stall_queue(drive,
IDECD_SEEK_TIMER);
return ide_stopped;
}
printk(KERN_ERR PFX "%s: DSC timeout\n",
drive->name);
}
drive->atapi_flags &= ~IDE_AFLAG_SEEKING;
}
if (rq_data_dir(rq) == READ &&
IDE_LARGE_SEEK(info->last_block, block,
IDECD_SEEK_THRESHOLD) &&
(drive->dev_flags & IDE_DFLAG_DSC_OVERLAP)) {
xferlen = 0;
fn = cdrom_start_seek_continuation;
if (cdrom_start_rw(drive, rq) == ide_stopped)
return ide_stopped;
drive->dma = 0;
info->start_seek = jiffies;
ide_cd_prepare_seek_request(drive, rq);
} else {
xferlen = 32768;
fn = cdrom_start_rw_cont;
if (cdrom_start_rw(drive, rq) == ide_stopped)
return ide_stopped;
if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
return ide_stopped;
}
info->last_block = block;
if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
return ide_stopped;
} else if (blk_sense_request(rq) || blk_pc_request(rq) ||
rq->cmd_type == REQ_TYPE_ATA_PC) {
xferlen = rq->data_len;
@ -1908,13 +1831,6 @@ static ide_proc_entry_t idecd_proc[] = {
{ NULL, 0, NULL, NULL }
};
ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP);
static const struct ide_proc_devset idecd_settings[] = {
IDE_PROC_DEVSET(dsc_overlap, 0, 1),
{ 0 },
};
static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
{
return idecd_proc;
@ -1922,7 +1838,7 @@ static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
{
return idecd_settings;
return NULL;
}
#endif
@ -2022,11 +1938,6 @@ static int ide_cdrom_setup(ide_drive_t *drive)
/* set correct block size */
blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
if (drive->next != drive)
drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
else
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
if (ide_cdrom_register(drive, nslots)) {
printk(KERN_ERR PFX "%s: %s failed to register device with the"
" cdrom driver.\n", drive->name, __func__);
@ -2063,7 +1974,6 @@ static void ide_cd_release(struct kref *kref)
kfree(info->toc);
if (devinfo->handle == drive)
unregister_cdrom(devinfo);
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
drive->driver_data = NULL;
blk_queue_prep_rq(drive->queue, NULL);
g->private_data = NULL;

2
drivers/ide/ide-cd.h
View File

@ -88,8 +88,6 @@ struct cdrom_info {
struct request_sense sense_data;
struct request request_sense_request;
unsigned long last_block;
unsigned long start_seek;
u8 max_speed; /* Max speed of the drive. */
u8 current_speed; /* Current speed of the drive. */

54
drivers/ide/ide-dma-sff.c
View File

@ -98,10 +98,10 @@ int ide_build_dmatable(ide_drive_t *drive, struct request *rq)
{
ide_hwif_t *hwif = drive->hwif;
__le32 *table = (__le32 *)hwif->dmatable_cpu;
unsigned int is_trm290 = (hwif->chipset == ide_trm290) ? 1 : 0;
unsigned int count = 0;
int i;
struct scatterlist *sg;
u8 is_trm290 = !!(hwif->host_flags & IDE_HFLAG_TRM290);
hwif->sg_nents = ide_build_sglist(drive, rq);
if (hwif->sg_nents == 0)
@ -176,15 +176,10 @@ int ide_dma_setup(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->hwgroup->rq;
unsigned int reading;
unsigned int reading = rq_data_dir(rq) ? 0 : ATA_DMA_WR;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
u8 dma_stat;
if (rq_data_dir(rq))
reading = 0;
else
reading = 1 << 3;
/* fall back to pio! */
if (!ide_build_dmatable(drive, rq)) {
ide_map_sg(drive, rq);
@ -209,10 +204,11 @@ int ide_dma_setup(ide_drive_t *drive)
/* clear INTR & ERROR flags */
if (mmio)
writeb(dma_stat | 6,
writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
(void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);
outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
hwif->dma_base + ATA_DMA_STATUS);
drive->waiting_for_dma = 1;
return 0;
@ -246,14 +242,13 @@ static int dma_timer_expiry(ide_drive_t *drive)
hwif->hwgroup->expiry = NULL; /* one free ride for now */
/* 1 dmaing, 2 error, 4 intr */
if (dma_stat & 2) /* ERROR */
if (dma_stat & ATA_DMA_ERR) /* ERROR */
return -1;
if (dma_stat & 1) /* DMAing */
if (dma_stat & ATA_DMA_ACTIVE) /* DMAing */
return WAIT_CMD;
if (dma_stat & 4) /* Got an Interrupt */
if (dma_stat & ATA_DMA_INTR) /* Got an Interrupt */
return WAIT_CMD;
return 0; /* Status is unknown -- reset the bus */
@ -279,12 +274,11 @@ void ide_dma_start(ide_drive_t *drive)
*/
if (hwif->host_flags & IDE_HFLAG_MMIO) {
dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
/* start DMA */
writeb(dma_cmd | 1,
writeb(dma_cmd | ATA_DMA_START,
(void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
} else {
dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
outb(dma_cmd | 1, hwif->dma_base + ATA_DMA_CMD);
outb(dma_cmd | ATA_DMA_START, hwif->dma_base + ATA_DMA_CMD);
}
wmb();
@ -296,19 +290,18 @@ int ide_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
u8 dma_stat = 0, dma_cmd = 0;
u8 dma_stat = 0, dma_cmd = 0, mask;
drive->waiting_for_dma = 0;
/* stop DMA */
if (mmio) {
/* get DMA command mode */
dma_cmd = readb((void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
/* stop DMA */
writeb(dma_cmd & ~1,
writeb(dma_cmd & ~ATA_DMA_START,
(void __iomem *)(hwif->dma_base + ATA_DMA_CMD));
} else {
dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
outb(dma_cmd & ~1, hwif->dma_base + ATA_DMA_CMD);
outb(dma_cmd & ~ATA_DMA_START, hwif->dma_base + ATA_DMA_CMD);
}
/* get DMA status */
@ -316,16 +309,21 @@ int ide_dma_end(ide_drive_t *drive)
if (mmio)
/* clear the INTR & ERROR bits */
writeb(dma_stat | 6,
writeb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
(void __iomem *)(hwif->dma_base + ATA_DMA_STATUS));
else
outb(dma_stat | 6, hwif->dma_base + ATA_DMA_STATUS);
outb(dma_stat | ATA_DMA_ERR | ATA_DMA_INTR,
hwif->dma_base + ATA_DMA_STATUS);
/* purge DMA mappings */
ide_destroy_dmatable(drive);
/* verify good DMA status */
wmb();
return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
/* verify good DMA status */
mask = ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR;
if ((dma_stat & mask) != ATA_DMA_INTR)
return 0x10 | dma_stat;
return 0;
}
EXPORT_SYMBOL_GPL(ide_dma_end);
@ -335,11 +333,7 @@ int ide_dma_test_irq(ide_drive_t *drive)
ide_hwif_t *hwif = drive->hwif;
u8 dma_stat = hwif->tp_ops->read_sff_dma_status(hwif);
/* return 1 if INTR asserted */
if ((dma_stat & 4) == 4)
return 1;
return 0;
return (dma_stat & ATA_DMA_INTR) ? 1 : 0;
}
EXPORT_SYMBOL_GPL(ide_dma_test_irq);

296
drivers/ide/ide-io.c
View File

@ -84,11 +84,11 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq,
ide_dma_on(drive);
}
if (!__blk_end_request(rq, error, nr_bytes)) {
if (dequeue)
HWGROUP(drive)->rq = NULL;
if (!blk_end_request(rq, error, nr_bytes))
ret = 0;
}
if (ret == 0 && dequeue)
drive->hwif->hwgroup->rq = NULL;
return ret;
}
@ -107,16 +107,7 @@ static int __ide_end_request(ide_drive_t *drive, struct request *rq,
int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
{
unsigned int nr_bytes = nr_sectors << 9;
struct request *rq;
unsigned long flags;
int ret = 1;
/*
* room for locking improvements here, the calls below don't
* need the queue lock held at all
*/
spin_lock_irqsave(&ide_lock, flags);
rq = HWGROUP(drive)->rq;
struct request *rq = drive->hwif->hwgroup->rq;
if (!nr_bytes) {
if (blk_pc_request(rq))
@ -125,105 +116,10 @@ int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
nr_bytes = rq->hard_cur_sectors << 9;
}
ret = __ide_end_request(drive, rq, uptodate, nr_bytes, 1);
spin_unlock_irqrestore(&ide_lock, flags);
return ret;
return __ide_end_request(drive, rq, uptodate, nr_bytes, 1);
}
EXPORT_SYMBOL(ide_end_request);
static void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
drive->name, pm->pm_step);
#endif
if (drive->media != ide_disk)
return;
switch (pm->pm_step) {
case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (pm->pm_state == PM_EVENT_FREEZE)
pm->pm_step = IDE_PM_COMPLETED;
else
pm->pm_step = IDE_PM_STANDBY;
break;
case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
pm->pm_step = IDE_PM_COMPLETED;
break;
case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
pm->pm_step = IDE_PM_IDLE;
break;
case IDE_PM_IDLE: /* Resume step 2 (idle)*/
pm->pm_step = IDE_PM_RESTORE_DMA;
break;
}
}
static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
ide_task_t *args = rq->special;
memset(args, 0, sizeof(*args));
switch (pm->pm_step) {
case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (drive->media != ide_disk)
break;
/* Not supported? Switch to next step now. */
if (ata_id_flush_enabled(drive->id) == 0 ||
(drive->dev_flags & IDE_DFLAG_WCACHE) == 0) {
ide_complete_power_step(drive, rq);
return ide_stopped;
}
if (ata_id_flush_ext_enabled(drive->id))
args->tf.command = ATA_CMD_FLUSH_EXT;
else
args->tf.command = ATA_CMD_FLUSH;
goto out_do_tf;
case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
args->tf.command = ATA_CMD_STANDBYNOW1;
goto out_do_tf;
case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
ide_set_max_pio(drive);
/*
* skip IDE_PM_IDLE for ATAPI devices
*/
if (drive->media != ide_disk)
pm->pm_step = IDE_PM_RESTORE_DMA;
else
ide_complete_power_step(drive, rq);
return ide_stopped;
case IDE_PM_IDLE: /* Resume step 2 (idle) */
args->tf.command = ATA_CMD_IDLEIMMEDIATE;
goto out_do_tf;
case IDE_PM_RESTORE_DMA: /* Resume step 3 (restore DMA) */
/*
* Right now, all we do is call ide_set_dma(drive),
* we could be smarter and check for current xfer_speed
* in struct drive etc...
*/
if (drive->hwif->dma_ops == NULL)
break;
/*
* TODO: respect IDE_DFLAG_USING_DMA
*/
ide_set_dma(drive);
break;
}
pm->pm_step = IDE_PM_COMPLETED;
return ide_stopped;
out_do_tf:
args->tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
args->data_phase = TASKFILE_NO_DATA;
return do_rw_taskfile(drive, args);
}
/**
* ide_end_dequeued_request - complete an IDE I/O
* @drive: IDE device for the I/O
@ -242,48 +138,12 @@ out_do_tf:
int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
int uptodate, int nr_sectors)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&ide_lock, flags);
BUG_ON(!blk_rq_started(rq));
ret = __ide_end_request(drive, rq, uptodate, nr_sectors << 9, 0);
spin_unlock_irqrestore(&ide_lock, flags);
return ret;
return __ide_end_request(drive, rq, uptodate, nr_sectors << 9, 0);
}
EXPORT_SYMBOL_GPL(ide_end_dequeued_request);
/**
* ide_complete_pm_request - end the current Power Management request
* @drive: target drive
* @rq: request
*
* This function cleans up the current PM request and stops the queue
* if necessary.
*/
static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
{
unsigned long flags;
#ifdef DEBUG_PM
printk("%s: completing PM request, %s\n", drive->name,
blk_pm_suspend_request(rq) ? "suspend" : "resume");
#endif
spin_lock_irqsave(&ide_lock, flags);
if (blk_pm_suspend_request(rq)) {
blk_stop_queue(drive->queue);
} else {
drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
blk_start_queue(drive->queue);
}
HWGROUP(drive)->rq = NULL;
if (__blk_end_request(rq, 0, 0))
BUG();
spin_unlock_irqrestore(&ide_lock, flags);
}
/**
* ide_end_drive_cmd - end an explicit drive command
* @drive: command
@ -300,19 +160,12 @@ static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
{
unsigned long flags;
struct request *rq;
spin_lock_irqsave(&ide_lock, flags);
rq = HWGROUP(drive)->rq;
spin_unlock_irqrestore(&ide_lock, flags);
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
struct request *rq = hwgroup->rq;
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
ide_task_t *task = (ide_task_t *)rq->special;
if (rq->errors == 0)
rq->errors = !OK_STAT(stat, ATA_DRDY, BAD_STAT);
if (task) {
struct ide_taskfile *tf = &task->tf;
@ -333,15 +186,14 @@ void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
return;
}
spin_lock_irqsave(&ide_lock, flags);
HWGROUP(drive)->rq = NULL;
rq->errors = err;
if (unlikely(__blk_end_request(rq, (rq->errors ? -EIO : 0),
blk_rq_bytes(rq))))
BUG();
spin_unlock_irqrestore(&ide_lock, flags);
}
hwgroup->rq = NULL;
rq->errors = err;
if (unlikely(blk_end_request(rq, (rq->errors ? -EIO : 0),
blk_rq_bytes(rq))))
BUG();
}
EXPORT_SYMBOL(ide_end_drive_cmd);
static void ide_kill_rq(ide_drive_t *drive, struct request *rq)
@ -720,40 +572,6 @@ static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
}
}
static void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
else if (blk_pm_resume_request(rq) &&
pm->pm_step == IDE_PM_START_RESUME) {
/*
* The first thing we do on wakeup is to wait for BSY bit to
* go away (with a looong timeout) as a drive on this hwif may
* just be POSTing itself.
* We do that before even selecting as the "other" device on
* the bus may be broken enough to walk on our toes at this
* point.
*/
ide_hwif_t *hwif = drive->hwif;
int rc;
#ifdef DEBUG_PM
printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);
#endif
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
SELECT_DRIVE(drive);
hwif->tp_ops->set_irq(hwif, 1);
rc = ide_wait_not_busy(hwif, 100000);
if (rc)
printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
}
}
/**
* start_request - start of I/O and command issuing for IDE
*
@ -927,7 +745,7 @@ repeat:
/*
* Issue a new request to a drive from hwgroup
* Caller must have already done spin_lock_irqsave(&ide_lock, ..);
* Caller must have already done spin_lock_irqsave(&hwgroup->lock, ..);
*
* A hwgroup is a serialized group of IDE interfaces. Usually there is
* exactly one hwif (interface) per hwgroup, but buggy controllers (eg. CMD640)
@ -939,7 +757,7 @@ repeat:
* possibly along with many other devices. This is especially common in
* PCI-based systems with off-board IDE controller cards.
*
* The IDE driver uses the single global ide_lock spinlock to protect
* The IDE driver uses a per-hwgroup spinlock to protect
* access to the request queues, and to protect the hwgroup->busy flag.
*
* The first thread into the driver for a particular hwgroup sets the
@ -955,7 +773,7 @@ repeat:
* will start the next request from the queue. If no more work remains,
* the driver will clear the hwgroup->busy flag and exit.
*
* The ide_lock (spinlock) is used to protect all access to the
* The per-hwgroup spinlock is used to protect all access to the
* hwgroup->busy flag, but is otherwise not needed for most processing in
* the driver. This makes the driver much more friendlier to shared IRQs
* than previous designs, while remaining 100% (?) SMP safe and capable.
@ -968,7 +786,7 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
ide_startstop_t startstop;
int loops = 0;
/* caller must own ide_lock */
/* caller must own hwgroup->lock */
BUG_ON(!irqs_disabled());
while (!hwgroup->busy) {
@ -1023,12 +841,12 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
}
again:
hwif = HWIF(drive);
if (hwgroup->hwif->sharing_irq && hwif != hwgroup->hwif) {
if (hwif != hwgroup->hwif) {
/*
* set nIEN for previous hwif, drives in the
* quirk_list may not like intr setups/cleanups
*/
if (drive->quirk_list != 1)
if (drive->quirk_list == 0)
hwif->tp_ops->set_irq(hwif, 0);
}
hwgroup->hwif = hwif;
@ -1036,11 +854,6 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
drive->dev_flags &= ~(IDE_DFLAG_SLEEPING | IDE_DFLAG_PARKED);
drive->service_start = jiffies;
if (blk_queue_plugged(drive->queue)) {
printk(KERN_ERR "ide: huh? queue was plugged!\n");
break;
}
/*
* we know that the queue isn't empty, but this can happen
* if the q->prep_rq_fn() decides to kill a request
@ -1090,11 +903,11 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
*/
if (masked_irq != IDE_NO_IRQ && hwif->irq != masked_irq)
disable_irq_nosync(hwif->irq);
spin_unlock(&ide_lock);
spin_unlock(&hwgroup->lock);
local_irq_enable_in_hardirq();
/* allow other IRQs while we start this request */
startstop = start_request(drive, rq);
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
if (masked_irq != IDE_NO_IRQ && hwif->irq != masked_irq)
enable_irq(hwif->irq);
if (startstop == ide_stopped)
@ -1192,7 +1005,7 @@ void ide_timer_expiry (unsigned long data)
unsigned long flags;
unsigned long wait = -1;
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
if (((handler = hwgroup->handler) == NULL) ||
(hwgroup->req_gen != hwgroup->req_gen_timer)) {
@ -1225,7 +1038,7 @@ void ide_timer_expiry (unsigned long data)
hwgroup->timer.expires = jiffies + wait;
hwgroup->req_gen_timer = hwgroup->req_gen;
add_timer(&hwgroup->timer);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
return;
}
}
@ -1235,7 +1048,7 @@ void ide_timer_expiry (unsigned long data)
* the handler() function, which means we need to
* globally mask the specific IRQ:
*/
spin_unlock(&ide_lock);
spin_unlock(&hwgroup->lock);
hwif = HWIF(drive);
/* disable_irq_nosync ?? */
disable_irq(hwif->irq);
@ -1259,14 +1072,14 @@ void ide_timer_expiry (unsigned long data)
hwif->tp_ops->read_status(hwif));
}
drive->service_time = jiffies - drive->service_start;
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
enable_irq(hwif->irq);
if (startstop == ide_stopped)
hwgroup->busy = 0;
}
}
ide_do_request(hwgroup, IDE_NO_IRQ);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
}
/**
@ -1359,18 +1172,16 @@ irqreturn_t ide_intr (int irq, void *dev_id)
{
unsigned long flags;
ide_hwgroup_t *hwgroup = (ide_hwgroup_t *)dev_id;
ide_hwif_t *hwif;
ide_hwif_t *hwif = hwgroup->hwif;
ide_drive_t *drive;
ide_handler_t *handler;
ide_startstop_t startstop;
irqreturn_t irq_ret = IRQ_NONE;
spin_lock_irqsave(&ide_lock, flags);
hwif = hwgroup->hwif;
spin_lock_irqsave(&hwgroup->lock, flags);
if (!ide_ack_intr(hwif)) {
spin_unlock_irqrestore(&ide_lock, flags);
return IRQ_NONE;
}
if (!ide_ack_intr(hwif))
goto out;
if ((handler = hwgroup->handler) == NULL || hwgroup->polling) {
/*
@ -1406,9 +1217,9 @@ irqreturn_t ide_intr (int irq, void *dev_id)
(void)hwif->tp_ops->read_status(hwif);
#endif /* CONFIG_BLK_DEV_IDEPCI */
}
spin_unlock_irqrestore(&ide_lock, flags);
return IRQ_NONE;
goto out;
}
drive = hwgroup->drive;
if (!drive) {
/*
@ -1417,10 +1228,10 @@ irqreturn_t ide_intr (int irq, void *dev_id)
*
* [Note - this can occur if the drive is hot unplugged]
*/
spin_unlock_irqrestore(&ide_lock, flags);
return IRQ_HANDLED;
goto out_handled;
}
if (!drive_is_ready(drive)) {
if (!drive_is_ready(drive))
/*
* This happens regularly when we share a PCI IRQ with
* another device. Unfortunately, it can also happen
@ -1428,9 +1239,8 @@ irqreturn_t ide_intr (int irq, void *dev_id)
* their status register is up to date. Hopefully we have
* enough advance overhead that the latter isn't a problem.
*/
spin_unlock_irqrestore(&ide_lock, flags);
return IRQ_NONE;
}
goto out;
if (!hwgroup->busy) {
hwgroup->busy = 1; /* paranoia */
printk(KERN_ERR "%s: ide_intr: hwgroup->busy was 0 ??\n", drive->name);
@ -1438,7 +1248,7 @@ irqreturn_t ide_intr (int irq, void *dev_id)
hwgroup->handler = NULL;
hwgroup->req_gen++;
del_timer(&hwgroup->timer);
spin_unlock(&ide_lock);
spin_unlock(&hwgroup->lock);
if (hwif->port_ops && hwif->port_ops->clear_irq)
hwif->port_ops->clear_irq(drive);
@ -1449,7 +1259,7 @@ irqreturn_t ide_intr (int irq, void *dev_id)
/* service this interrupt, may set handler for next interrupt */
startstop = handler(drive);
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
/*
* Note that handler() may have set things up for another
* interrupt to occur soon, but it cannot happen until
@ -1467,8 +1277,11 @@ irqreturn_t ide_intr (int irq, void *dev_id)
"on exit\n", drive->name);
}
}
spin_unlock_irqrestore(&ide_lock, flags);
return IRQ_HANDLED;
out_handled:
irq_ret = IRQ_HANDLED;
out:
spin_unlock_irqrestore(&hwgroup->lock, flags);
return irq_ret;
}
/**
@ -1488,16 +1301,17 @@ irqreturn_t ide_intr (int irq, void *dev_id)
void ide_do_drive_cmd(ide_drive_t *drive, struct request *rq)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
struct request_queue *q = drive->queue;
unsigned long flags;
ide_hwgroup_t *hwgroup = HWGROUP(drive);
spin_lock_irqsave(&ide_lock, flags);
hwgroup->rq = NULL;
__elv_add_request(drive->queue, rq, ELEVATOR_INSERT_FRONT, 0);
blk_start_queueing(drive->queue);
spin_unlock_irqrestore(&ide_lock, flags);
}
spin_lock_irqsave(q->queue_lock, flags);
__elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 0);
blk_start_queueing(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
EXPORT_SYMBOL(ide_do_drive_cmd);
void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma)

5
drivers/ide/ide-ioctls.c
View File

@ -19,7 +19,6 @@ int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
const struct ide_ioctl_devset *s)
{
const struct ide_devset *ds;
unsigned long flags;
int err = -EOPNOTSUPP;
for (; (ds = s->setting); s++) {
@ -33,9 +32,7 @@ int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
read_val:
mutex_lock(&ide_setting_mtx);
spin_lock_irqsave(&ide_lock, flags);
err = ds->get(drive);
spin_unlock_irqrestore(&ide_lock, flags);
mutex_unlock(&ide_setting_mtx);
return err >= 0 ? put_user(err, (long __user *)arg) : err;
@ -98,7 +95,7 @@ static int ide_set_nice_ioctl(ide_drive_t *drive, unsigned long arg)
return -EPERM;
if (((arg >> IDE_NICE_DSC_OVERLAP) & 1) &&
(drive->media == ide_disk || drive->media == ide_floppy ||
(drive->media != ide_tape ||
(drive->dev_flags & IDE_DFLAG_SCSI)))
return -EPERM;

48
drivers/ide/ide-iops.c
View File

@ -835,10 +835,12 @@ static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
unsigned int timeout, ide_expiry_t *expiry)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
__ide_set_handler(drive, handler, timeout, expiry);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
}
EXPORT_SYMBOL(ide_set_handler);
@ -860,10 +862,11 @@ EXPORT_SYMBOL(ide_set_handler);
void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
unsigned timeout, ide_expiry_t *expiry)
{
ide_hwif_t *hwif = drive->hwif;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
unsigned long flags;
ide_hwif_t *hwif = HWIF(drive);
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
__ide_set_handler(drive, handler, timeout, expiry);
hwif->tp_ops->exec_command(hwif, cmd);
/*
@ -873,19 +876,20 @@ void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
* FIXME: we could skip this delay with care on non shared devices
*/
ndelay(400);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
}
EXPORT_SYMBOL(ide_execute_command);
void ide_execute_pkt_cmd(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
hwif->tp_ops->exec_command(hwif, ATA_CMD_PACKET);
ndelay(400);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
}
EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd);
@ -1076,22 +1080,16 @@ static void pre_reset(ide_drive_t *drive)
*/
static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
{
unsigned int unit;
unsigned long flags, timeout;
ide_hwif_t *hwif;
ide_hwgroup_t *hwgroup;
struct ide_io_ports *io_ports;
const struct ide_tp_ops *tp_ops;
ide_hwif_t *hwif = drive->hwif;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
struct ide_io_ports *io_ports = &hwif->io_ports;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
const struct ide_port_ops *port_ops;
unsigned long flags, timeout;
unsigned int unit;
DEFINE_WAIT(wait);
spin_lock_irqsave(&ide_lock, flags);
hwif = HWIF(drive);
hwgroup = HWGROUP(drive);
io_ports = &hwif->io_ports;
tp_ops = hwif->tp_ops;
spin_lock_irqsave(&hwgroup->lock, flags);
/* We must not reset with running handlers */
BUG_ON(hwgroup->handler != NULL);
@ -1106,7 +1104,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
hwgroup->polling = 1;
__ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
return ide_started;
}
@ -1129,9 +1127,9 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
if (time_before_eq(timeout, now))
break;
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
timeout = schedule_timeout_uninterruptible(timeout - now);
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
} while (timeout);
finish_wait(&ide_park_wq, &wait);
@ -1143,7 +1141,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
pre_reset(&hwif->drives[unit]);
if (io_ports->ctl_addr == 0) {
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
ide_complete_drive_reset(drive, -ENXIO);
return ide_stopped;
}
@ -1179,7 +1177,7 @@ static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
if (port_ops && port_ops->resetproc)
port_ops->resetproc(drive);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
return ide_started;
}

58
drivers/ide/ide-legacy.c Normal file
View File

@ -0,0 +1,58 @@
#include <linux/kernel.h>
#include <linux/ide.h>
static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
u8 port_no, const struct ide_port_info *d,
unsigned long config)
{
unsigned long base, ctl;
int irq;
if (port_no == 0) {
base = 0x1f0;
ctl = 0x3f6;
irq = 14;
} else {
base = 0x170;
ctl = 0x376;
irq = 15;
}
if (!request_region(base, 8, d->name)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
d->name, base, base + 7);
return;
}
if (!request_region(ctl, 1, d->name)) {
printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
d->name, ctl);
release_region(base, 8);
return;
}
ide_std_init_ports(hw, base, ctl);
hw->irq = irq;
hw->chipset = d->chipset;
hw->config = config;
hws[port_no] = hw;
}
int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
{
hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
memset(&hw, 0, sizeof(hw));
if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
ide_legacy_init_one(hws, &hw[0], 0, d, config);
ide_legacy_init_one(hws, &hw[1], 1, d, config);
if (hws[0] == NULL && hws[1] == NULL &&
(d->host_flags & IDE_HFLAG_SINGLE))
return -ENOENT;
return ide_host_add(d, hws, NULL);
}
EXPORT_SYMBOL_GPL(ide_legacy_device_add);

105
drivers/ide/ide-lib.c
View File

@ -43,7 +43,6 @@ const char *ide_xfer_verbose(u8 mode)
return s;
}
EXPORT_SYMBOL(ide_xfer_verbose);
/**
@ -87,7 +86,7 @@ static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
* This is used by most chipset support modules when "auto-tuning".
*/
u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
u8 ide_get_best_pio_mode(ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
{
u16 *id = drive->id;
int pio_mode = -1, overridden = 0;
@ -131,7 +130,6 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
return pio_mode;
}
EXPORT_SYMBOL_GPL(ide_get_best_pio_mode);
/* req_pio == "255" for auto-tune */
@ -162,7 +160,6 @@ void ide_set_pio(ide_drive_t *drive, u8 req_pio)
(void)ide_set_pio_mode(drive, XFER_PIO_0 + pio);
}
EXPORT_SYMBOL_GPL(ide_set_pio);
/**
@ -173,7 +170,7 @@ EXPORT_SYMBOL_GPL(ide_set_pio);
* Enable or disable bounce buffering for the device. Drives move
* between PIO and DMA and that changes the rules we need.
*/
void ide_toggle_bounce(ide_drive_t *drive, int on)
{
u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
@ -243,14 +240,13 @@ int ide_set_dma_mode(ide_drive_t *drive, const u8 mode)
return ide_config_drive_speed(drive, mode);
}
}
EXPORT_SYMBOL_GPL(ide_set_dma_mode);
/**
* ide_set_xfer_rate - set transfer rate
* @drive: drive to set
* @rate: speed to attempt to set
*
*
* General helper for setting the speed of an IDE device. This
* function knows about user enforced limits from the configuration
* which ->set_pio_mode/->set_dma_mode does not.
@ -277,21 +273,16 @@ int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
static void ide_dump_opcode(ide_drive_t *drive)
{
struct request *rq;
struct request *rq = drive->hwif->hwgroup->rq;
ide_task_t *task = NULL;
spin_lock(&ide_lock);
rq = NULL;
if (HWGROUP(drive))
rq = HWGROUP(drive)->rq;
spin_unlock(&ide_lock);
if (!rq)
return;
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
task = rq->special;
printk("ide: failed opcode was: ");
printk(KERN_ERR "ide: failed opcode was: ");
if (task == NULL)
printk(KERN_CONT "unknown\n");
else
@ -329,44 +320,55 @@ static void ide_dump_sector(ide_drive_t *drive)
drive->hwif->tp_ops->tf_read(drive, &task);
if (lba48 || (tf->device & ATA_LBA))
printk(", LBAsect=%llu",
printk(KERN_CONT ", LBAsect=%llu",
(unsigned long long)ide_get_lba_addr(tf, lba48));
else
printk(", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
tf->device & 0xf, tf->lbal);
printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
tf->device & 0xf, tf->lbal);
}
static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
{
printk("{ ");
if (err & ATA_ABORTED) printk("DriveStatusError ");
printk(KERN_ERR "{ ");
if (err & ATA_ABORTED)
printk(KERN_CONT "DriveStatusError ");
if (err & ATA_ICRC)
printk((err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
if (err & ATA_UNC) printk("UncorrectableError ");
if (err & ATA_IDNF) printk("SectorIdNotFound ");
if (err & ATA_TRK0NF) printk("TrackZeroNotFound ");
if (err & ATA_AMNF) printk("AddrMarkNotFound ");
printk("}");
printk(KERN_CONT "%s",
(err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
if (err & ATA_UNC)
printk(KERN_CONT "UncorrectableError ");
if (err & ATA_IDNF)
printk(KERN_CONT "SectorIdNotFound ");
if (err & ATA_TRK0NF)
printk(KERN_CONT "TrackZeroNotFound ");
if (err & ATA_AMNF)
printk(KERN_CONT "AddrMarkNotFound ");
printk(KERN_CONT "}");
if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
(err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
ide_dump_sector(drive);
if (HWGROUP(drive) && HWGROUP(drive)->rq)
printk(", sector=%llu",
printk(KERN_CONT ", sector=%llu",
(unsigned long long)HWGROUP(drive)->rq->sector);
}
printk("\n");
printk(KERN_CONT "\n");
}
static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
{
printk("{ ");
if (err & ATAPI_ILI) printk("IllegalLengthIndication ");
if (err & ATAPI_EOM) printk("EndOfMedia ");
if (err & ATA_ABORTED) printk("AbortedCommand ");
if (err & ATA_MCR) printk("MediaChangeRequested ");
if (err & ATAPI_LFS) printk("LastFailedSense=0x%02x ",
(err & ATAPI_LFS) >> 4);
printk("}\n");
printk(KERN_ERR "{ ");
if (err & ATAPI_ILI)
printk(KERN_CONT "IllegalLengthIndication ");
if (err & ATAPI_EOM)
printk(KERN_CONT "EndOfMedia ");
if (err & ATA_ABORTED)
printk(KERN_CONT "AbortedCommand ");
if (err & ATA_MCR)
printk(KERN_CONT "MediaChangeRequested ");
if (err & ATAPI_LFS)
printk(KERN_CONT "LastFailedSense=0x%02x ",
(err & ATAPI_LFS) >> 4);
printk(KERN_CONT "}\n");
}
/**
@ -382,34 +384,37 @@ static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
{
unsigned long flags;
u8 err = 0;
local_irq_save(flags);
printk("%s: %s: status=0x%02x { ", drive->name, msg, stat);
printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
if (stat & ATA_BUSY)
printk("Busy ");
printk(KERN_CONT "Busy ");
else {
if (stat & ATA_DRDY) printk("DriveReady ");
if (stat & ATA_DF) printk("DeviceFault ");
if (stat & ATA_DSC) printk("SeekComplete ");
if (stat & ATA_DRQ) printk("DataRequest ");
if (stat & ATA_CORR) printk("CorrectedError ");
if (stat & ATA_IDX) printk("Index ");
if (stat & ATA_ERR) printk("Error ");
if (stat & ATA_DRDY)
printk(KERN_CONT "DriveReady ");
if (stat & ATA_DF)
printk(KERN_CONT "DeviceFault ");
if (stat & ATA_DSC)
printk(KERN_CONT "SeekComplete ");
if (stat & ATA_DRQ)
printk(KERN_CONT "DataRequest ");
if (stat & ATA_CORR)
printk(KERN_CONT "CorrectedError ");
if (stat & ATA_IDX)
printk(KERN_CONT "Index ");
if (stat & ATA_ERR)
printk(KERN_CONT "Error ");
}
printk("}\n");
printk(KERN_CONT "}\n");
if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
err = ide_read_error(drive);
printk("%s: %s: error=0x%02x ", drive->name, msg, err);
printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
if (drive->media == ide_disk)
ide_dump_ata_error(drive, err);
else
ide_dump_atapi_error(drive, err);
}
ide_dump_opcode(drive);
local_irq_restore(flags);
return err;
}
EXPORT_SYMBOL(ide_dump_status);

16
drivers/ide/ide-park.c
View File

@ -7,17 +7,16 @@ DECLARE_WAIT_QUEUE_HEAD(ide_park_wq);
static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
struct request_queue *q = drive->queue;
struct request *rq;
int rc;
timeout += jiffies;
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
if (drive->dev_flags & IDE_DFLAG_PARKED) {
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
int reset_timer;
int reset_timer = time_before(timeout, drive->sleep);
reset_timer = time_before(timeout, drive->sleep);
drive->sleep = timeout;
wake_up_all(&ide_park_wq);
if (reset_timer && hwgroup->sleeping &&
@ -26,10 +25,10 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
hwgroup->busy = 0;
blk_start_queueing(q);
}
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
return;
}
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
rq = blk_get_request(q, READ, __GFP_WAIT);
rq->cmd[0] = REQ_PARK_HEADS;
@ -62,20 +61,21 @@ ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
ide_drive_t *drive = to_ide_device(dev);
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
unsigned long now;
unsigned int msecs;
if (drive->dev_flags & IDE_DFLAG_NO_UNLOAD)
return -EOPNOTSUPP;
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
now = jiffies;
if (drive->dev_flags & IDE_DFLAG_PARKED &&
time_after(drive->sleep, now))
msecs = jiffies_to_msecs(drive->sleep - now);
else
msecs = 0;
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
return snprintf(buf, 20, "%u\n", msecs);
}

235
drivers/ide/ide-pm.c Normal file
View File

@ -0,0 +1,235 @@
#include <linux/kernel.h>
#include <linux/ide.h>
#include <linux/hdreg.h>
int generic_ide_suspend(struct device *dev, pm_message_t mesg)
{
ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int ret;
/* call ACPI _GTM only once */
if ((drive->dn & 1) == 0 || pair == NULL)
ide_acpi_get_timing(hwif);
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_SUSPEND;
rq->special = &args;
rq->data = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
rqpm.pm_state = mesg.event;
ret = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
/* call ACPI _PS3 only after both devices are suspended */
if (ret == 0 && ((drive->dn & 1) || pair == NULL))
ide_acpi_set_state(hwif, 0);
return ret;
}
int generic_ide_resume(struct device *dev)
{
ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int err;
/* call ACPI _PS0 / _STM only once */
if ((drive->dn & 1) == 0 || pair == NULL) {
ide_acpi_set_state(hwif, 1);
ide_acpi_push_timing(hwif);
}
ide_acpi_exec_tfs(drive);
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_RESUME;
rq->cmd_flags |= REQ_PREEMPT;
rq->special = &args;
rq->data = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
err = blk_execute_rq(drive->queue, NULL, rq, 1);
blk_put_request(rq);
if (err == 0 && dev->driver) {
ide_driver_t *drv = to_ide_driver(dev->driver);
if (drv->resume)
drv->resume(drive);
}
return err;
}
void ide_complete_power_step(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
printk(KERN_INFO "%s: complete_power_step(step: %d)\n",
drive->name, pm->pm_step);
#endif
if (drive->media != ide_disk)
return;
switch (pm->pm_step) {
case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (pm->pm_state == PM_EVENT_FREEZE)
pm->pm_step = IDE_PM_COMPLETED;
else
pm->pm_step = IDE_PM_STANDBY;
break;
case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
pm->pm_step = IDE_PM_COMPLETED;
break;
case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
pm->pm_step = IDE_PM_IDLE;
break;
case IDE_PM_IDLE: /* Resume step 2 (idle)*/
pm->pm_step = IDE_PM_RESTORE_DMA;
break;
}
}
ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
ide_task_t *args = rq->special;
memset(args, 0, sizeof(*args));
switch (pm->pm_step) {
case IDE_PM_FLUSH_CACHE: /* Suspend step 1 (flush cache) */
if (drive->media != ide_disk)
break;
/* Not supported? Switch to next step now. */
if (ata_id_flush_enabled(drive->id) == 0 ||
(drive->dev_flags & IDE_DFLAG_WCACHE) == 0) {
ide_complete_power_step(drive, rq);
return ide_stopped;
}
if (ata_id_flush_ext_enabled(drive->id))
args->tf.command = ATA_CMD_FLUSH_EXT;
else
args->tf.command = ATA_CMD_FLUSH;
goto out_do_tf;
case IDE_PM_STANDBY: /* Suspend step 2 (standby) */
args->tf.command = ATA_CMD_STANDBYNOW1;
goto out_do_tf;
case IDE_PM_RESTORE_PIO: /* Resume step 1 (restore PIO) */
ide_set_max_pio(drive);
/*
* skip IDE_PM_IDLE for ATAPI devices
*/
if (drive->media != ide_disk)
pm->pm_step = IDE_PM_RESTORE_DMA;
else
ide_complete_power_step(drive, rq);
return ide_stopped;
case IDE_PM_IDLE: /* Resume step 2 (idle) */
args->tf.command = ATA_CMD_IDLEIMMEDIATE;
goto out_do_tf;
case IDE_PM_RESTORE_DMA: /* Resume step 3 (restore DMA) */
/*
* Right now, all we do is call ide_set_dma(drive),
* we could be smarter and check for current xfer_speed
* in struct drive etc...
*/
if (drive->hwif->dma_ops == NULL)
break;
/*
* TODO: respect IDE_DFLAG_USING_DMA
*/
ide_set_dma(drive);
break;
}
pm->pm_step = IDE_PM_COMPLETED;
return ide_stopped;
out_do_tf:
args->tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
args->data_phase = TASKFILE_NO_DATA;
return do_rw_taskfile(drive, args);
}
/**
* ide_complete_pm_request - end the current Power Management request
* @drive: target drive
* @rq: request
*
* This function cleans up the current PM request and stops the queue
* if necessary.
*/
void ide_complete_pm_request(ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
unsigned long flags;
#ifdef DEBUG_PM
printk("%s: completing PM request, %s\n", drive->name,
blk_pm_suspend_request(rq) ? "suspend" : "resume");
#endif
spin_lock_irqsave(q->queue_lock, flags);
if (blk_pm_suspend_request(rq)) {
blk_stop_queue(q);
} else {
drive->dev_flags &= ~IDE_DFLAG_BLOCKED;
blk_start_queue(q);
}
spin_unlock_irqrestore(q->queue_lock, flags);
drive->hwif->hwgroup->rq = NULL;
if (blk_end_request(rq, 0, 0))
BUG();
}
void ide_check_pm_state(ide_drive_t *drive, struct request *rq)
{
struct request_pm_state *pm = rq->data;
if (blk_pm_suspend_request(rq) &&
pm->pm_step == IDE_PM_START_SUSPEND)
/* Mark drive blocked when starting the suspend sequence. */
drive->dev_flags |= IDE_DFLAG_BLOCKED;
else if (blk_pm_resume_request(rq) &&
pm->pm_step == IDE_PM_START_RESUME) {
/*
* The first thing we do on wakeup is to wait for BSY bit to
* go away (with a looong timeout) as a drive on this hwif may
* just be POSTing itself.
* We do that before even selecting as the "other" device on
* the bus may be broken enough to walk on our toes at this
* point.
*/
ide_hwif_t *hwif = drive->hwif;
int rc;
#ifdef DEBUG_PM
printk("%s: Wakeup request inited, waiting for !BSY...\n", drive->name);
#endif
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
printk(KERN_WARNING "%s: bus not ready on wakeup\n", drive->name);
SELECT_DRIVE(drive);
hwif->tp_ops->set_irq(hwif, 1);
rc = ide_wait_not_busy(hwif, 100000);
if (rc)
printk(KERN_WARNING "%s: drive not ready on wakeup\n", drive->name);
}
}

166
drivers/ide/ide-probe.c
View File

@ -110,20 +110,22 @@ static void ide_disk_init_mult_count(ide_drive_t *drive)
* read and parse the results. This function is run with
* interrupts disabled.
*/
static inline void do_identify (ide_drive_t *drive, u8 cmd)
static void do_identify(ide_drive_t *drive, u8 cmd)
{
ide_hwif_t *hwif = HWIF(drive);
u16 *id = drive->id;
char *m = (char *)&id[ATA_ID_PROD];
unsigned long flags;
int bswap = 1, is_cfa;
/* local CPU only; some systems need this */
local_irq_save(flags);
/* read 512 bytes of id info */
hwif->tp_ops->input_data(drive, NULL, id, SECTOR_SIZE);
local_irq_restore(flags);
drive->dev_flags |= IDE_DFLAG_ID_READ;
local_irq_enable();
#ifdef DEBUG
printk(KERN_INFO "%s: dumping identify data\n", drive->name);
ide_dump_identify((u8 *)id);
@ -306,17 +308,12 @@ static int actual_try_to_identify (ide_drive_t *drive, u8 cmd)
s = tp_ops->read_status(hwif);
if (OK_STAT(s, ATA_DRQ, BAD_R_STAT)) {
unsigned long flags;
/* local CPU only; some systems need this */
local_irq_save(flags);
/* drive returned ID */
do_identify(drive, cmd);
/* drive responded with ID */
rc = 0;
/* clear drive IRQ */
(void)tp_ops->read_status(hwif);
local_irq_restore(flags);
} else {
/* drive refused ID */
rc = 2;
@ -554,8 +551,8 @@ static void enable_nest (ide_drive_t *drive)
* 1 device was found
* (note: IDE_DFLAG_PRESENT might still be not set)
*/
static inline u8 probe_for_drive (ide_drive_t *drive)
static u8 probe_for_drive(ide_drive_t *drive)
{
char *m;
@ -642,7 +639,7 @@ static int ide_register_port(ide_hwif_t *hwif)
int ret;
/* register with global device tree */
strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
dev_set_name(&hwif->gendev, hwif->name);
hwif->gendev.driver_data = hwif;
if (hwif->gendev.parent == NULL) {
if (hwif->dev)
@ -863,31 +860,6 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
}
}
/*
* save_match() is used to simplify logic in init_irq() below.
*
* A loophole here is that we may not know about a particular
* hwif's irq until after that hwif is actually probed/initialized..
* This could be a problem for the case where an hwif is on a
* dual interface that requires serialization (eg. cmd640) and another
* hwif using one of the same irqs is initialized beforehand.
*
* This routine detects and reports such situations, but does not fix them.
*/
static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
{
ide_hwif_t *m = *match;
if (m && m->hwgroup && m->hwgroup != new->hwgroup) {
if (!new->hwgroup)
return;
printk(KERN_WARNING "%s: potential IRQ problem with %s and %s\n",
hwif->name, new->name, m->name);
}
if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */
*match = new;
}
/*
* init request queue
*/
@ -906,7 +878,8 @@ static int ide_init_queue(ide_drive_t *drive)
* do not.
*/
q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif));
q = blk_init_queue_node(do_ide_request, &hwif->hwgroup->lock,
hwif_to_node(hwif));
if (!q)
return 1;
@ -947,7 +920,7 @@ static void ide_add_drive_to_hwgroup(ide_drive_t *drive)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
if (!hwgroup->drive) {
/* first drive for hwgroup. */
drive->next = drive;
@ -957,7 +930,7 @@ static void ide_add_drive_to_hwgroup(ide_drive_t *drive)
drive->next = hwgroup->drive->next;
hwgroup->drive->next = drive;
}
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
}
/*
@ -1002,7 +975,7 @@ void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
ide_ports[hwif->index] = NULL;
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
/*
* Remove us from the hwgroup, and free
* the hwgroup if we were the only member
@ -1030,7 +1003,7 @@ void ide_remove_port_from_hwgroup(ide_hwif_t *hwif)
}
BUG_ON(hwgroup->hwif == hwif);
}
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
}
/*
@ -1051,27 +1024,13 @@ static int init_irq (ide_hwif_t *hwif)
mutex_lock(&ide_cfg_mtx);
hwif->hwgroup = NULL;
/*
* Group up with any other hwifs that share our irq(s).
*/
for (index = 0; index < MAX_HWIFS; index++) {
ide_hwif_t *h = ide_ports[index];
if (h && h->hwgroup) { /* scan only initialized ports */
if (hwif->irq == h->irq) {
hwif->sharing_irq = h->sharing_irq = 1;
if (hwif->chipset != ide_pci ||
h->chipset != ide_pci) {
save_match(hwif, h, &match);
}
}
if (hwif->serialized) {
if (hwif->mate && hwif->mate->irq == h->irq)
save_match(hwif, h, &match);
}
if (h->serialized) {
if (h->mate && hwif->irq == h->mate->irq)
save_match(hwif, h, &match);
if (hwif->host->host_flags & IDE_HFLAG_SERIALIZE) {
if (hwif->host == h->host)
match = h;
}
}
}
@ -1092,17 +1051,19 @@ static int init_irq (ide_hwif_t *hwif)
* linked list, the first entry is the hwif that owns
* hwgroup->handler - do not change that.
*/
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
hwif->next = hwgroup->hwif->next;
hwgroup->hwif->next = hwif;
BUG_ON(hwif->next == hwif);
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
} else {
hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO,
hwif_to_node(hwif));
if (hwgroup == NULL)
goto out_up;
spin_lock_init(&hwgroup->lock);
hwif->hwgroup = hwgroup;
hwgroup->hwif = hwif->next = hwif;
@ -1122,8 +1083,7 @@ static int init_irq (ide_hwif_t *hwif)
sa = IRQF_SHARED;
#endif /* __mc68000__ */
if (hwif->chipset == ide_pci || hwif->chipset == ide_cmd646 ||
hwif->chipset == ide_ali14xx)
if (hwif->chipset == ide_pci)
sa = IRQF_SHARED;
if (io_ports->ctl_addr)
@ -1150,8 +1110,7 @@ static int init_irq (ide_hwif_t *hwif)
io_ports->data_addr, hwif->irq);
#endif /* __mc68000__ */
if (match)
printk(KERN_CONT " (%sed with %s)",
hwif->sharing_irq ? "shar" : "serializ", match->name);
printk(KERN_CONT " (serialized with %s)", match->name);
printk(KERN_CONT "\n");
mutex_unlock(&ide_cfg_mtx);
@ -1263,20 +1222,21 @@ static void ide_remove_drive_from_hwgroup(ide_drive_t *drive)
static void drive_release_dev (struct device *dev)
{
ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
ide_proc_unregister_device(drive);
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
ide_remove_drive_from_hwgroup(drive);
kfree(drive->id);
drive->id = NULL;
drive->dev_flags &= ~IDE_DFLAG_PRESENT;
/* Messed up locking ... */
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
blk_cleanup_queue(drive->queue);
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
drive->queue = NULL;
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
complete(&drive->gendev_rel_comp);
}
@ -1352,7 +1312,7 @@ static void hwif_register_devices(ide_hwif_t *hwif)
if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
continue;
snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i);
dev_set_name(dev, "%u.%u", hwif->index, i);
dev->parent = &hwif->gendev;
dev->bus = &ide_bus_type;
dev->driver_data = drive;
@ -1436,13 +1396,11 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
}
if ((d->host_flags & IDE_HFLAG_SERIALIZE) ||
((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) {
if (hwif->mate)
hwif->mate->serialized = hwif->serialized = 1;
}
((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base))
hwif->host->host_flags |= IDE_HFLAG_SERIALIZE;
if (d->host_flags & IDE_HFLAG_RQSIZE_256)
hwif->rqsize = 256;
if (d->max_sectors)
hwif->rqsize = d->max_sectors;
/* call chipset specific routine for each enabled port */
if (d->init_hwif)
@ -1794,59 +1752,3 @@ void ide_port_scan(ide_hwif_t *hwif)
ide_proc_port_register_devices(hwif);
}
EXPORT_SYMBOL_GPL(ide_port_scan);
static void ide_legacy_init_one(hw_regs_t **hws, hw_regs_t *hw,
u8 port_no, const struct ide_port_info *d,
unsigned long config)
{
unsigned long base, ctl;
int irq;
if (port_no == 0) {
base = 0x1f0;
ctl = 0x3f6;
irq = 14;
} else {
base = 0x170;
ctl = 0x376;
irq = 15;
}
if (!request_region(base, 8, d->name)) {
printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
d->name, base, base + 7);
return;
}
if (!request_region(ctl, 1, d->name)) {
printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
d->name, ctl);
release_region(base, 8);
return;
}
ide_std_init_ports(hw, base, ctl);
hw->irq = irq;
hw->chipset = d->chipset;
hw->config = config;
hws[port_no] = hw;
}
int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
{
hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
memset(&hw, 0, sizeof(hw));
if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
ide_legacy_init_one(hws, &hw[0], 0, d, config);
ide_legacy_init_one(hws, &hw[1], 1, d, config);
if (hws[0] == NULL && hws[1] == NULL &&
(d->host_flags & IDE_HFLAG_SINGLE))
return -ENOENT;
return ide_host_add(d, hws, NULL);
}
EXPORT_SYMBOL_GPL(ide_legacy_device_add);

29
drivers/ide/ide-proc.c
View File

@ -46,10 +46,6 @@ static int proc_ide_read_imodel
case ide_qd65xx: name = "qd65xx"; break;
case ide_umc8672: name = "umc8672"; break;
case ide_ht6560b: name = "ht6560b"; break;
case ide_rz1000: name = "rz1000"; break;
case ide_trm290: name = "trm290"; break;
case ide_cmd646: name = "cmd646"; break;
case ide_cy82c693: name = "cy82c693"; break;
case ide_4drives: name = "4drives"; break;
case ide_pmac: name = "mac-io"; break;
case ide_au1xxx: name = "au1xxx"; break;
@ -155,13 +151,8 @@ static int ide_read_setting(ide_drive_t *drive,
const struct ide_devset *ds = setting->setting;
int val = -EINVAL;
if (ds->get) {
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
if (ds->get)
val = ds->get(drive);
spin_unlock_irqrestore(&ide_lock, flags);
}
return val;
}
@ -583,31 +574,19 @@ EXPORT_SYMBOL(ide_proc_register_driver);
* Clean up the driver specific /proc files and IDE settings
* for a given drive.
*
* Takes ide_setting_mtx and ide_lock.
* Caller must hold none of the locks.
* Takes ide_setting_mtx.
*/
void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver)
{
unsigned long flags;
ide_remove_proc_entries(drive->proc, driver->proc_entries(drive));
mutex_lock(&ide_setting_mtx);
spin_lock_irqsave(&ide_lock, flags);
/*
* ide_setting_mtx protects the settings list
* ide_lock protects the use of settings
*
* so we need to hold both, ide_settings_sem because we want to
* modify the settings list, and ide_lock because we cannot take
* a setting out that is being used.
*
* OTOH both ide_{read,write}_setting are only ever used under
* ide_setting_mtx.
* ide_setting_mtx protects both the settings list and the use
* of settings (we cannot take a setting out that is being used).
*/
drive->settings = NULL;
spin_unlock_irqrestore(&ide_lock, flags);
mutex_unlock(&ide_setting_mtx);
}
EXPORT_SYMBOL(ide_proc_unregister_driver);

89
drivers/ide/ide.c
View File

@ -74,9 +74,6 @@ static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
DEFINE_MUTEX(ide_cfg_mtx);
__cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
EXPORT_SYMBOL(ide_lock);
static void ide_port_init_devices_data(ide_hwif_t *);
/*
@ -130,7 +127,6 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
}
}
/* Called with ide_lock held. */
static void __ide_port_unregister_devices(ide_hwif_t *hwif)
{
int i;
@ -139,10 +135,8 @@ static void __ide_port_unregister_devices(ide_hwif_t *hwif)
ide_drive_t *drive = &hwif->drives[i];
if (drive->dev_flags & IDE_DFLAG_PRESENT) {
spin_unlock_irq(&ide_lock);
device_unregister(&drive->gendev);
wait_for_completion(&drive->gendev_rel_comp);
spin_lock_irq(&ide_lock);
}
}
}
@ -150,11 +144,9 @@ static void __ide_port_unregister_devices(ide_hwif_t *hwif)
void ide_port_unregister_devices(ide_hwif_t *hwif)
{
mutex_lock(&ide_cfg_mtx);
spin_lock_irq(&ide_lock);
__ide_port_unregister_devices(hwif);
hwif->present = 0;
ide_port_init_devices_data(hwif);
spin_unlock_irq(&ide_lock);
mutex_unlock(&ide_cfg_mtx);
}
EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
@ -192,12 +184,10 @@ void ide_unregister(ide_hwif_t *hwif)
mutex_lock(&ide_cfg_mtx);
spin_lock_irq(&ide_lock);
if (hwif->present) {
__ide_port_unregister_devices(hwif);
hwif->present = 0;
}
spin_unlock_irq(&ide_lock);
ide_proc_unregister_port(hwif);
@ -340,6 +330,7 @@ static int set_pio_mode_abuse(ide_hwif_t *hwif, u8 req_pio)
static int set_pio_mode(ide_drive_t *drive, int arg)
{
ide_hwif_t *hwif = drive->hwif;
ide_hwgroup_t *hwgroup = hwif->hwgroup;
const struct ide_port_ops *port_ops = hwif->port_ops;
if (arg < 0 || arg > 255)
@ -354,9 +345,9 @@ static int set_pio_mode(ide_drive_t *drive, int arg)
unsigned long flags;
/* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
spin_lock_irqsave(&ide_lock, flags);
spin_lock_irqsave(&hwgroup->lock, flags);
port_ops->set_pio_mode(drive, arg);
spin_unlock_irqrestore(&ide_lock, flags);
spin_unlock_irqrestore(&hwgroup->lock, flags);
} else
port_ops->set_pio_mode(drive, arg);
} else {
@ -397,80 +388,6 @@ ide_ext_devset_rw_sync(unmaskirq, unmaskirq);
ide_ext_devset_rw_sync(using_dma, using_dma);
__IDE_DEVSET(pio_mode, DS_SYNC, NULL, set_pio_mode);
static int generic_ide_suspend(struct device *dev, pm_message_t mesg)
{
ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int ret;
/* call ACPI _GTM only once */
if ((drive->dn & 1) == 0 || pair == NULL)
ide_acpi_get_timing(hwif);
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_SUSPEND;
rq->special = &args;
rq->data = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
if (mesg.event == PM_EVENT_PRETHAW)
mesg.event = PM_EVENT_FREEZE;
rqpm.pm_state = mesg.event;
ret = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
/* call ACPI _PS3 only after both devices are suspended */
if (ret == 0 && ((drive->dn & 1) || pair == NULL))
ide_acpi_set_state(hwif, 0);
return ret;
}
static int generic_ide_resume(struct device *dev)
{
ide_drive_t *drive = dev->driver_data, *pair = ide_get_pair_dev(drive);
ide_hwif_t *hwif = HWIF(drive);
struct request *rq;
struct request_pm_state rqpm;
ide_task_t args;
int err;
/* call ACPI _PS0 / _STM only once */
if ((drive->dn & 1) == 0 || pair == NULL) {
ide_acpi_set_state(hwif, 1);
ide_acpi_push_timing(hwif);
}
ide_acpi_exec_tfs(drive);
memset(&rqpm, 0, sizeof(rqpm));
memset(&args, 0, sizeof(args));
rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
rq->cmd_type = REQ_TYPE_PM_RESUME;
rq->cmd_flags |= REQ_PREEMPT;
rq->special = &args;
rq->data = &rqpm;
rqpm.pm_step = IDE_PM_START_RESUME;
rqpm.pm_state = PM_EVENT_ON;
err = blk_execute_rq(drive->queue, NULL, rq, 1);
blk_put_request(rq);
if (err == 0 && dev->driver) {
ide_driver_t *drv = to_ide_driver(dev->driver);
if (drv->resume)
drv->resume(drive);
}
return err;
}
/**
* ide_device_get - get an additional reference to a ide_drive_t
* @drive: device to get a reference to

9
drivers/ide/pdc202xx_old.c
View File

@ -350,16 +350,17 @@ static const struct ide_dma_ops pdc2026x_dma_ops = {
.dma_timeout = pdc202xx_dma_timeout,
};
#define DECLARE_PDC2026X_DEV(udma, extra_flags) \
#define DECLARE_PDC2026X_DEV(udma, sectors) \
{ \
.name = DRV_NAME, \
.init_chipset = init_chipset_pdc202xx, \
.port_ops = &pdc2026x_port_ops, \
.dma_ops = &pdc2026x_dma_ops, \
.host_flags = IDE_HFLAGS_PDC202XX | extra_flags, \
.host_flags = IDE_HFLAGS_PDC202XX, \
.pio_mask = ATA_PIO4, \
.mwdma_mask = ATA_MWDMA2, \
.udma_mask = udma, \
.max_sectors = sectors, \
}
static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
@ -376,8 +377,8 @@ static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
/* 1: PDC2026{2,3} */
DECLARE_PDC2026X_DEV(ATA_UDMA4, 0),
/* 2: PDC2026{5,7} */
DECLARE_PDC2026X_DEV(ATA_UDMA5, IDE_HFLAG_RQSIZE_256),
/* 2: PDC2026{5,7}: UDMA5, limit LBA48 requests to 256 sectors */
DECLARE_PDC2026X_DEV(ATA_UDMA5, 256),
};
/**

36
drivers/ide/rz1000.c
View File

@ -22,34 +22,48 @@
#define DRV_NAME "rz1000"
static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif)
static int __devinit rz1000_disable_readahead(struct pci_dev *dev)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
u16 reg;
if (!pci_read_config_word (dev, 0x40, &reg) &&
!pci_write_config_word(dev, 0x40, reg & 0xdfff)) {
printk(KERN_INFO "%s: disabled chipset read-ahead "
"(buggy RZ1000/RZ1001)\n", hwif->name);
"(buggy RZ1000/RZ1001)\n", pci_name(dev));
return 0;
} else {
if (hwif->mate)
hwif->mate->serialized = hwif->serialized = 1;
hwif->host_flags |= IDE_HFLAG_NO_UNMASK_IRQS;
printk(KERN_INFO "%s: serialized, disabled unmasking "
"(buggy RZ1000/RZ1001)\n", hwif->name);
"(buggy RZ1000/RZ1001)\n", pci_name(dev));
return 1;
}
}
static const struct ide_port_info rz1000_chipset __devinitdata = {
.name = DRV_NAME,
.init_hwif = init_hwif_rz1000,
.chipset = ide_rz1000,
.host_flags = IDE_HFLAG_NO_DMA,
};
static int __devinit rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
return ide_pci_init_one(dev, &rz1000_chipset, NULL);
struct ide_port_info d = rz1000_chipset;
int rc;
rc = pci_enable_device(dev);
if (rc)
return rc;
if (rz1000_disable_readahead(dev)) {
d.host_flags |= IDE_HFLAG_SERIALIZE;
d.host_flags |= IDE_HFLAG_NO_UNMASK_IRQS;
}
return ide_pci_init_one(dev, &d, NULL);
}
static void rz1000_remove(struct pci_dev *dev)
{
ide_pci_remove(dev);
pci_disable_device(dev);
}
static const struct pci_device_id rz1000_pci_tbl[] = {
@ -63,7 +77,7 @@ static struct pci_driver rz1000_pci_driver = {
.name = "RZ1000_IDE",
.id_table = rz1000_pci_tbl,
.probe = rz1000_init_one,
.remove = ide_pci_remove,
.remove = rz1000_remove,
};
static int __init rz1000_ide_init(void)

4
drivers/ide/trm290.c
View File

@ -328,10 +328,10 @@ static struct ide_dma_ops trm290_dma_ops = {
static const struct ide_port_info trm290_chipset __devinitdata = {
.name = DRV_NAME,
.init_hwif = init_hwif_trm290,
.chipset = ide_trm290,
.port_ops = &trm290_port_ops,
.dma_ops = &trm290_dma_ops,
.host_flags = IDE_HFLAG_NO_ATAPI_DMA |
.host_flags = IDE_HFLAG_TRM290 |
IDE_HFLAG_NO_ATAPI_DMA |
#if 0 /* play it safe for now */
IDE_HFLAG_TRUST_BIOS_FOR_DMA |
#endif

4
drivers/ide/tx4938ide.c
View File

@ -181,7 +181,7 @@ static void tx4938ide_input_data_swap(ide_drive_t *drive, struct request *rq,
while (count--)
*ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));
__ide_flush_dcache_range((unsigned long)buf, count * 2);
__ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
static void tx4938ide_output_data_swap(ide_drive_t *drive, struct request *rq,
@ -195,7 +195,7 @@ static void tx4938ide_output_data_swap(ide_drive_t *drive, struct request *rq,
__raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);
ptr++;
}
__ide_flush_dcache_range((unsigned long)buf, count * 2);
__ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
static const struct ide_tp_ops tx4938ide_tp_ops = {

10
drivers/ide/tx4939ide.c
View File

@ -259,6 +259,12 @@ static int tx4939ide_build_dmatable(ide_drive_t *drive, struct request *rq)
bcount = 0x10000 - (cur_addr & 0xffff);
if (bcount > cur_len)
bcount = cur_len;
/*
* This workaround for zero count seems required.
* (standard ide_build_dmatable do it too)
*/
if ((bcount & 0xffff) == 0x0000)
bcount = 0x8000;
*table++ = bcount & 0xffff;
*table++ = cur_addr;
cur_addr += bcount;
@ -558,7 +564,7 @@ static void tx4939ide_input_data_swap(ide_drive_t *drive, struct request *rq,
while (count--)
*ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));
__ide_flush_dcache_range((unsigned long)buf, count * 2);
__ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
static void tx4939ide_output_data_swap(ide_drive_t *drive, struct request *rq,
@ -572,7 +578,7 @@ static void tx4939ide_output_data_swap(ide_drive_t *drive, struct request *rq,
__raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);
ptr++;
}
__ide_flush_dcache_range((unsigned long)buf, count * 2);
__ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
}
static const struct ide_tp_ops tx4939ide_tp_ops = {

11
drivers/ide/umc8672.c
View File

@ -107,18 +107,21 @@ static void umc_set_speeds(u8 speeds[])
static void umc_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide_hwif_t *hwif = drive->hwif;
unsigned long flags;
ide_hwgroup_t *mate_hwgroup = hwif->mate ? hwif->mate->hwgroup : NULL;
unsigned long uninitialized_var(flags);
printk("%s: setting umc8672 to PIO mode%d (speed %d)\n",
drive->name, pio, pio_to_umc[pio]);
spin_lock_irqsave(&ide_lock, flags);
if (hwif->mate && hwif->mate->hwgroup->handler) {
if (mate_hwgroup)
spin_lock_irqsave(&mate_hwgroup->lock, flags);
if (mate_hwgroup && mate_hwgroup->handler) {
printk(KERN_ERR "umc8672: other interface is busy: exiting tune_umc()\n");
} else {
current_speeds[drive->name[2] - 'a'] = pio_to_umc[pio];
umc_set_speeds(current_speeds);
}
spin_unlock_irqrestore(&ide_lock, flags);
if (mate_hwgroup)
spin_unlock_irqrestore(&mate_hwgroup->lock, flags);
}
static const struct ide_port_ops umc8672_port_ops = {

32
drivers/scsi/ide-scsi.c
View File

@ -578,6 +578,8 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
{
idescsi_scsi_t *scsi = scsihost_to_idescsi(cmd->device->host);
ide_drive_t *drive = scsi->drive;
ide_hwif_t *hwif;
ide_hwgroup_t *hwgroup;
int busy;
int ret = FAILED;
@ -594,13 +596,16 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
goto no_drive;
}
/* First give it some more time, how much is "right" is hard to say :-( */
hwif = drive->hwif;
hwgroup = hwif->hwgroup;
busy = ide_wait_not_busy(HWIF(drive), 100); /* FIXME - uses mdelay which causes latency? */
/* First give it some more time, how much is "right" is hard to say :-(
FIXME - uses mdelay which causes latency? */
busy = ide_wait_not_busy(hwif, 100);
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
printk (KERN_WARNING "ide-scsi: drive did%s become ready\n", busy?" not":"");
spin_lock_irq(&ide_lock);
spin_lock_irq(&hwgroup->lock);
/* If there is no pc running we're done (our interrupt took care of it) */
pc = drive->pc;
@ -629,7 +634,7 @@ static int idescsi_eh_abort (struct scsi_cmnd *cmd)
}
ide_unlock:
spin_unlock_irq(&ide_lock);
spin_unlock_irq(&hwgroup->lock);
no_drive:
if (test_bit(IDESCSI_LOG_CMD, &scsi->log))
printk (KERN_WARNING "ide-scsi: abort returns %s\n", ret == SUCCESS?"success":"failed");
@ -642,6 +647,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
struct request *req;
idescsi_scsi_t *scsi = scsihost_to_idescsi(cmd->device->host);
ide_drive_t *drive = scsi->drive;
ide_hwgroup_t *hwgroup;
int ready = 0;
int ret = SUCCESS;
@ -658,14 +664,18 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
return FAILED;
}
hwgroup = drive->hwif->hwgroup;
spin_lock_irq(cmd->device->host->host_lock);
spin_lock(&ide_lock);
spin_lock(&hwgroup->lock);
pc = drive->pc;
if (pc)
req = pc->rq;
if (pc == NULL || (req = pc->rq) != HWGROUP(drive)->rq || !HWGROUP(drive)->handler) {
if (pc == NULL || req != hwgroup->rq || hwgroup->handler == NULL) {
printk (KERN_WARNING "ide-scsi: No active request in idescsi_eh_reset\n");
spin_unlock(&ide_lock);
spin_unlock(&hwgroup->lock);
spin_unlock_irq(cmd->device->host->host_lock);
return FAILED;
}
@ -685,10 +695,10 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd)
BUG();
}
HWGROUP(drive)->rq = NULL;
HWGROUP(drive)->handler = NULL;
HWGROUP(drive)->busy = 1; /* will set this to zero when ide reset finished */
spin_unlock(&ide_lock);
hwgroup->rq = NULL;
hwgroup->handler = NULL;
hwgroup->busy = 1; /* will set this to zero when ide reset finished */
spin_unlock(&hwgroup->lock);
ide_do_reset(drive);

37
include/linux/ide.h
View File

@ -122,8 +122,6 @@ struct ide_io_ports {
#define MAX_DRIVES 2 /* per interface; 2 assumed by lots of code */
#define SECTOR_SIZE 512
#define IDE_LARGE_SEEK(b1,b2,t) (((b1) > (b2) + (t)) || ((b2) > (b1) + (t)))
/*
* Timeouts for various operations:
*/
@ -172,9 +170,7 @@ typedef int (ide_ack_intr_t)(struct hwif_s *);
enum { ide_unknown, ide_generic, ide_pci,
ide_cmd640, ide_dtc2278, ide_ali14xx,
ide_qd65xx, ide_umc8672, ide_ht6560b,
ide_rz1000, ide_trm290,
ide_cmd646, ide_cy82c693, ide_4drives,
ide_pmac, ide_acorn,
ide_4drives, ide_pmac, ide_acorn,
ide_au1xxx, ide_palm3710
};
@ -496,8 +492,6 @@ enum {
* when more than one interrupt is needed.
*/
IDE_AFLAG_LIMIT_NFRAMES = (1 << 7),
/* Seeking in progress. */
IDE_AFLAG_SEEKING = (1 << 8),
/* Saved TOC information is current. */
IDE_AFLAG_TOC_VALID = (1 << 9),
/* We think that the drive door is locked. */
@ -845,8 +839,6 @@ typedef struct hwif_s {
unsigned extra_ports; /* number of extra dma ports */
unsigned present : 1; /* this interface exists */
unsigned serialized : 1; /* serialized all channel operation */
unsigned sharing_irq: 1; /* 1 = sharing irq with another hwif */
unsigned sg_mapped : 1; /* sg_table and sg_nents are ready */
struct device gendev;
@ -909,6 +901,8 @@ typedef struct hwgroup_s {
int req_gen;
int req_gen_timer;
spinlock_t lock;
} ide_hwgroup_t;
typedef struct ide_driver_s ide_driver_t;
@ -1122,6 +1116,14 @@ enum {
IDE_PM_COMPLETED,
};
int generic_ide_suspend(struct device *, pm_message_t);
int generic_ide_resume(struct device *);
void ide_complete_power_step(ide_drive_t *, struct request *);
ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
void ide_complete_pm_request(ide_drive_t *, struct request *);
void ide_check_pm_state(ide_drive_t *, struct request *);
/*
* Subdrivers support.
*
@ -1376,8 +1378,8 @@ enum {
IDE_HFLAG_LEGACY_IRQS = (1 << 21),
/* force use of legacy IRQs */
IDE_HFLAG_FORCE_LEGACY_IRQS = (1 << 22),
/* limit LBA48 requests to 256 sectors */
IDE_HFLAG_RQSIZE_256 = (1 << 23),
/* host is TRM290 */
IDE_HFLAG_TRM290 = (1 << 23),
/* use 32-bit I/O ops */
IDE_HFLAG_IO_32BIT = (1 << 24),
/* unmask IRQs */
@ -1415,6 +1417,9 @@ struct ide_port_info {
ide_pci_enablebit_t enablebits[2];
hwif_chipset_t chipset;
u16 max_sectors; /* if < than the default one */
u32 host_flags;
u8 pio_mask;
u8 swdma_mask;
@ -1610,13 +1615,13 @@ extern struct mutex ide_cfg_mtx;
/*
* Structure locking:
*
* ide_cfg_mtx and ide_lock together protect changes to
* ide_hwif_t->{next,hwgroup}
* ide_cfg_mtx and hwgroup->lock together protect changes to
* ide_hwif_t->next
* ide_drive_t->next
*
* ide_hwgroup_t->busy: ide_lock
* ide_hwgroup_t->hwif: ide_lock
* ide_hwif_t->mate: constant, no locking
* ide_hwgroup_t->busy: hwgroup->lock
* ide_hwgroup_t->hwif: hwgroup->lock
* ide_hwif_t->{hwgroup,mate}: constant, no locking
* ide_drive_t->hwif: constant, no locking
*/