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OpenCloudOS-Kernel
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Merge branch 'upstream' 

Conflicts:

	drivers/scsi/libata-core.c
	drivers/scsi/pdc_adma.c
	drivers/scsi/sata_mv.c
	drivers/scsi/sata_nv.c
	drivers/scsi/sata_promise.c
	drivers/scsi/sata_qstor.c
	drivers/scsi/sata_sx4.c
	drivers/scsi/sata_vsc.c
	include/linux/libata.h
This commit is contained in:
Jeff Garzik 2006-04-02 10:30:40 -04:00
parent 8e181c14f2 1ad8e7f9eb
commit 029f5468b5
14 changed files with 688 additions and 279 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/Makefile
View File

@ -165,7 +165,7 @@ ncr53c8xx-flags-$(CONFIG_SCSI_ZALON) \
CFLAGS_ncr53c8xx.o := $(ncr53c8xx-flags-y) $(ncr53c8xx-flags-m)
zalon7xx-objs := zalon.o ncr53c8xx.o
NCR_Q720_mod-objs := NCR_Q720.o ncr53c8xx.o
libata-objs := libata-core.o libata-scsi.o libata-bmdma.o
libata-objs := libata-core.o libata-scsi.o libata-bmdma.o libata-eh.o
oktagon_esp_mod-objs := oktagon_esp.o oktagon_io.o
# Files generated that shall be removed upon make clean

408
drivers/scsi/libata-core.c
View File

@ -65,7 +65,6 @@ static unsigned int ata_dev_init_params(struct ata_port *ap,
struct ata_device *dev,
u16 heads,
u16 sectors);
static int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
static unsigned int ata_dev_set_xfermode(struct ata_port *ap,
struct ata_device *dev);
static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev);
@ -409,7 +408,7 @@ static const char *sata_spd_string(unsigned int spd)
return spd_str[spd - 1];
}
static void ata_dev_disable(struct ata_port *ap, struct ata_device *dev)
void ata_dev_disable(struct ata_port *ap, struct ata_device *dev)
{
if (ata_dev_enabled(dev)) {
printk(KERN_WARNING "ata%u: dev %u disabled\n",
@ -961,6 +960,7 @@ void ata_qc_complete_internal(struct ata_queued_cmd *qc)
* @ap: Port to which the command is sent
* @dev: Device to which the command is sent
* @tf: Taskfile registers for the command and the result
* @cdb: CDB for packet command
* @dma_dir: Data tranfer direction of the command
* @buf: Data buffer of the command
* @buflen: Length of data buffer
@ -975,10 +975,9 @@ void ata_qc_complete_internal(struct ata_queued_cmd *qc)
* None. Should be called with kernel context, might sleep.
*/
static unsigned
ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
struct ata_taskfile *tf,
int dma_dir, void *buf, unsigned int buflen)
unsigned ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
struct ata_taskfile *tf, const u8 *cdb,
int dma_dir, void *buf, unsigned int buflen)
{
u8 command = tf->command;
struct ata_queued_cmd *qc;
@ -992,6 +991,8 @@ ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
BUG_ON(qc == NULL);
qc->tf = *tf;
if (cdb)
memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);
qc->dma_dir = dma_dir;
if (dma_dir != DMA_NONE) {
ata_sg_init_one(qc, buf, buflen);
@ -1042,7 +1043,7 @@ ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
*
* Kill the following code as soon as those drivers are fixed.
*/
if (ap->flags & ATA_FLAG_PORT_DISABLED) {
if (ap->flags & ATA_FLAG_DISABLED) {
err_mask |= AC_ERR_SYSTEM;
ata_port_probe(ap);
}
@ -1141,7 +1142,7 @@ static int ata_dev_read_id(struct ata_port *ap, struct ata_device *dev,
tf.protocol = ATA_PROT_PIO;
err_mask = ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,
err_mask = ata_exec_internal(ap, dev, &tf, NULL, DMA_FROM_DEVICE,
id, sizeof(id[0]) * ATA_ID_WORDS);
if (err_mask) {
rc = -EIO;
@ -1238,7 +1239,7 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev,
id[84], id[85], id[86], id[87], id[88]);
/* initialize to-be-configured parameters */
dev->flags = 0;
dev->flags &= ~ATA_DFLAG_CFG_MASK;
dev->max_sectors = 0;
dev->cdb_len = 0;
dev->n_sectors = 0;
@ -1381,11 +1382,18 @@ err_out_nosup:
static int ata_bus_probe(struct ata_port *ap)
{
unsigned int classes[ATA_MAX_DEVICES];
int i, rc, found = 0;
int tries[ATA_MAX_DEVICES];
int i, rc, down_xfermask;
struct ata_device *dev;
ata_port_probe(ap);
for (i = 0; i < ATA_MAX_DEVICES; i++)
tries[i] = ATA_PROBE_MAX_TRIES;
retry:
down_xfermask = 0;
/* reset and determine device classes */
for (i = 0; i < ATA_MAX_DEVICES; i++)
classes[i] = ATA_DEV_UNKNOWN;
@ -1399,7 +1407,7 @@ static int ata_bus_probe(struct ata_port *ap)
} else {
ap->ops->phy_reset(ap);
if (!(ap->flags & ATA_FLAG_PORT_DISABLED))
if (!(ap->flags & ATA_FLAG_DISABLED))
for (i = 0; i < ATA_MAX_DEVICES; i++)
classes[i] = ap->device[i].class;
@ -1415,21 +1423,23 @@ static int ata_bus_probe(struct ata_port *ap)
dev = &ap->device[i];
dev->class = classes[i];
if (!tries[i]) {
ata_down_xfermask_limit(ap, dev, 1);
ata_dev_disable(ap, dev);
}
if (!ata_dev_enabled(dev))
continue;
WARN_ON(dev->id != NULL);
if (ata_dev_read_id(ap, dev, &dev->class, 1, &dev->id)) {
dev->class = ATA_DEV_NONE;
continue;
}
kfree(dev->id);
dev->id = NULL;
rc = ata_dev_read_id(ap, dev, &dev->class, 1, &dev->id);
if (rc)
goto fail;
if (ata_dev_configure(ap, dev, 1)) {
ata_dev_disable(ap, dev);
continue;
}
found = 1;
rc = ata_dev_configure(ap, dev, 1);
if (rc)
goto fail;
}
/* configure transfer mode */
@ -1438,12 +1448,18 @@ static int ata_bus_probe(struct ata_port *ap)
* return error code and failing device on failure as
* ata_set_mode() does.
*/
if (found)
ap->ops->set_mode(ap);
for (i = 0; i < ATA_MAX_DEVICES; i++)
if (ata_dev_enabled(&ap->device[i])) {
ap->ops->set_mode(ap);
break;
}
rc = 0;
} else {
while (ata_set_mode(ap, &dev))
ata_dev_disable(ap, dev);
rc = ata_set_mode(ap, &dev);
if (rc) {
down_xfermask = 1;
goto fail;
}
}
for (i = 0; i < ATA_MAX_DEVICES; i++)
@ -1454,6 +1470,24 @@ static int ata_bus_probe(struct ata_port *ap)
ata_port_disable(ap);
ap->ops->port_disable(ap);
return -ENODEV;
fail:
switch (rc) {
case -EINVAL:
case -ENODEV:
tries[dev->devno] = 0;
break;
case -EIO:
ata_down_sata_spd_limit(ap);
/* fall through */
default:
tries[dev->devno]--;
if (down_xfermask &&
ata_down_xfermask_limit(ap, dev, tries[dev->devno] == 1))
tries[dev->devno] = 0;
}
goto retry;
}
/**
@ -1469,7 +1503,7 @@ static int ata_bus_probe(struct ata_port *ap)
void ata_port_probe(struct ata_port *ap)
{
ap->flags &= ~ATA_FLAG_PORT_DISABLED;
ap->flags &= ~ATA_FLAG_DISABLED;
}
/**
@ -1543,7 +1577,7 @@ void __sata_phy_reset(struct ata_port *ap)
else
ata_port_disable(ap);
if (ap->flags & ATA_FLAG_PORT_DISABLED)
if (ap->flags & ATA_FLAG_DISABLED)
return;
if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
@ -1568,7 +1602,7 @@ void __sata_phy_reset(struct ata_port *ap)
void sata_phy_reset(struct ata_port *ap)
{
__sata_phy_reset(ap);
if (ap->flags & ATA_FLAG_PORT_DISABLED)
if (ap->flags & ATA_FLAG_DISABLED)
return;
ata_bus_reset(ap);
}
@ -1607,7 +1641,121 @@ void ata_port_disable(struct ata_port *ap)
{
ap->device[0].class = ATA_DEV_NONE;
ap->device[1].class = ATA_DEV_NONE;
ap->flags |= ATA_FLAG_PORT_DISABLED;
ap->flags |= ATA_FLAG_DISABLED;
}
/**
* ata_down_sata_spd_limit - adjust SATA spd limit downward
* @ap: Port to adjust SATA spd limit for
*
* Adjust SATA spd limit of @ap downward. Note that this
* function only adjusts the limit. The change must be applied
* using ata_set_sata_spd().
*
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 0 on success, negative errno on failure
*/
int ata_down_sata_spd_limit(struct ata_port *ap)
{
u32 spd, mask;
int highbit;
if (ap->cbl != ATA_CBL_SATA || !ap->ops->scr_read)
return -EOPNOTSUPP;
mask = ap->sata_spd_limit;
if (mask <= 1)
return -EINVAL;
highbit = fls(mask) - 1;
mask &= ~(1 << highbit);
spd = (scr_read(ap, SCR_STATUS) >> 4) & 0xf;
if (spd <= 1)
return -EINVAL;
spd--;
mask &= (1 << spd) - 1;
if (!mask)
return -EINVAL;
ap->sata_spd_limit = mask;
printk(KERN_WARNING "ata%u: limiting SATA link speed to %s\n",
ap->id, sata_spd_string(fls(mask)));
return 0;
}
static int __ata_set_sata_spd_needed(struct ata_port *ap, u32 *scontrol)
{
u32 spd, limit;
if (ap->sata_spd_limit == UINT_MAX)
limit = 0;
else
limit = fls(ap->sata_spd_limit);
spd = (*scontrol >> 4) & 0xf;
*scontrol = (*scontrol & ~0xf0) | ((limit & 0xf) << 4);
return spd != limit;
}
/**
* ata_set_sata_spd_needed - is SATA spd configuration needed
* @ap: Port in question
*
* Test whether the spd limit in SControl matches
* @ap->sata_spd_limit. This function is used to determine
* whether hardreset is necessary to apply SATA spd
* configuration.
*
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
int ata_set_sata_spd_needed(struct ata_port *ap)
{
u32 scontrol;
if (ap->cbl != ATA_CBL_SATA || !ap->ops->scr_read)
return 0;
scontrol = scr_read(ap, SCR_CONTROL);
return __ata_set_sata_spd_needed(ap, &scontrol);
}
/**
* ata_set_sata_spd - set SATA spd according to spd limit
* @ap: Port to set SATA spd for
*
* Set SATA spd of @ap according to sata_spd_limit.
*
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 0 if spd doesn't need to be changed, 1 if spd has been
* changed. -EOPNOTSUPP if SCR registers are inaccessible.
*/
static int ata_set_sata_spd(struct ata_port *ap)
{
u32 scontrol;
if (ap->cbl != ATA_CBL_SATA || !ap->ops->scr_read)
return -EOPNOTSUPP;
scontrol = scr_read(ap, SCR_CONTROL);
if (!__ata_set_sata_spd_needed(ap, &scontrol))
return 0;
scr_write(ap, SCR_CONTROL, scontrol);
return 1;
}
/*
@ -1758,11 +1906,62 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed,
return 0;
}
/**
* ata_down_xfermask_limit - adjust dev xfer masks downward
* @ap: Port associated with device @dev
* @dev: Device to adjust xfer masks
* @force_pio0: Force PIO0
*
* Adjust xfer masks of @dev downward. Note that this function
* does not apply the change. Invoking ata_set_mode() afterwards
* will apply the limit.
*
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 0 on success, negative errno on failure
*/
int ata_down_xfermask_limit(struct ata_port *ap, struct ata_device *dev,
int force_pio0)
{
unsigned long xfer_mask;
int highbit;
xfer_mask = ata_pack_xfermask(dev->pio_mask, dev->mwdma_mask,
dev->udma_mask);
if (!xfer_mask)
goto fail;
/* don't gear down to MWDMA from UDMA, go directly to PIO */
if (xfer_mask & ATA_MASK_UDMA)
xfer_mask &= ~ATA_MASK_MWDMA;
highbit = fls(xfer_mask) - 1;
xfer_mask &= ~(1 << highbit);
if (force_pio0)
xfer_mask &= 1 << ATA_SHIFT_PIO;
if (!xfer_mask)
goto fail;
ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask,
&dev->udma_mask);
printk(KERN_WARNING "ata%u: dev %u limiting speed to %s\n",
ap->id, dev->devno, ata_mode_string(xfer_mask));
return 0;
fail:
return -EINVAL;
}
static int ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
{
unsigned int err_mask;
int rc;
dev->flags &= ~ATA_DFLAG_PIO;
if (dev->xfer_shift == ATA_SHIFT_PIO)
dev->flags |= ATA_DFLAG_PIO;
@ -1775,12 +1974,8 @@ static int ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
}
rc = ata_dev_revalidate(ap, dev, 0);
if (rc) {
printk(KERN_ERR
"ata%u: failed to revalidate after set xfermode\n",
ap->id);
if (rc)
return rc;
}
DPRINTK("xfer_shift=%u, xfer_mode=0x%x\n",
dev->xfer_shift, (int)dev->xfer_mode);
@ -1806,7 +2001,7 @@ static int ata_dev_set_mode(struct ata_port *ap, struct ata_device *dev)
* RETURNS:
* 0 on success, negative errno otherwise
*/
static int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev)
{
struct ata_device *dev;
int i, rc = 0, used_dma = 0, found = 0;
@ -2069,7 +2264,7 @@ static unsigned int ata_bus_softreset(struct ata_port *ap,
* Obtains host_set lock.
*
* SIDE EFFECTS:
* Sets ATA_FLAG_PORT_DISABLED if bus reset fails.
* Sets ATA_FLAG_DISABLED if bus reset fails.
*/
void ata_bus_reset(struct ata_port *ap)
@ -2179,7 +2374,14 @@ static int sata_phy_resume(struct ata_port *ap)
void ata_std_probeinit(struct ata_port *ap)
{
if ((ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read) {
u32 spd;
sata_phy_resume(ap);
spd = (scr_read(ap, SCR_CONTROL) & 0xf0) >> 4;
if (spd)
ap->sata_spd_limit &= (1 << spd) - 1;
if (sata_dev_present(ap))
ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
}
@ -2267,18 +2469,30 @@ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
DPRINTK("ENTER\n");
/* Issue phy wake/reset */
if (ata_set_sata_spd_needed(ap)) {
/* SATA spec says nothing about how to reconfigure
* spd. To be on the safe side, turn off phy during
* reconfiguration. This works for at least ICH7 AHCI
* and Sil3124.
*/
scontrol = scr_read(ap, SCR_CONTROL);
scontrol = (scontrol & 0x0f0) | 0x302;
scr_write_flush(ap, SCR_CONTROL, scontrol);
ata_set_sata_spd(ap);
}
/* issue phy wake/reset */
scontrol = scr_read(ap, SCR_CONTROL);
scontrol = (scontrol & 0x0f0) | 0x301;
scr_write_flush(ap, SCR_CONTROL, scontrol);
/*
* Couldn't find anything in SATA I/II specs, but AHCI-1.1
/* Couldn't find anything in SATA I/II specs, but AHCI-1.1
* 10.4.2 says at least 1 ms.
*/
msleep(1);
/* Bring phy back */
/* bring phy back */
sata_phy_resume(ap);
/* TODO: phy layer with polling, timeouts, etc. */
@ -2385,9 +2599,9 @@ int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes)
ata_std_postreset, classes);
}
static int ata_do_reset(struct ata_port *ap,
ata_reset_fn_t reset, ata_postreset_fn_t postreset,
int verbose, unsigned int *classes)
int ata_do_reset(struct ata_port *ap,
ata_reset_fn_t reset, ata_postreset_fn_t postreset,
int verbose, unsigned int *classes)
{
int i, rc;
@ -2458,21 +2672,42 @@ int ata_drive_probe_reset(struct ata_port *ap, ata_probeinit_fn_t probeinit,
if (probeinit)
probeinit(ap);
if (softreset) {
if (softreset && !ata_set_sata_spd_needed(ap)) {
rc = ata_do_reset(ap, softreset, postreset, 0, classes);
if (rc == 0 && classes[0] != ATA_DEV_UNKNOWN)
goto done;
printk(KERN_INFO "ata%u: softreset failed, will try "
"hardreset in 5 secs\n", ap->id);
ssleep(5);
}
if (!hardreset)
goto done;
rc = ata_do_reset(ap, hardreset, postreset, 0, classes);
if (rc || classes[0] != ATA_DEV_UNKNOWN)
goto done;
while (1) {
rc = ata_do_reset(ap, hardreset, postreset, 0, classes);
if (rc == 0) {
if (classes[0] != ATA_DEV_UNKNOWN)
goto done;
break;
}
if (ata_down_sata_spd_limit(ap))
goto done;
printk(KERN_INFO "ata%u: hardreset failed, will retry "
"in 5 secs\n", ap->id);
ssleep(5);
}
if (softreset) {
printk(KERN_INFO "ata%u: hardreset succeeded without "
"classification, will retry softreset in 5 secs\n",
ap->id);
ssleep(5);
if (softreset)
rc = ata_do_reset(ap, softreset, postreset, 0, classes);
}
done:
if (rc == 0 && classes[0] == ATA_DEV_UNKNOWN)
@ -2560,15 +2795,14 @@ static int ata_dev_same_device(struct ata_port *ap, struct ata_device *dev,
int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev,
int post_reset)
{
unsigned int class;
u16 *id;
unsigned int class = dev->class;
u16 *id = NULL;
int rc;
if (!ata_dev_enabled(dev))
return -ENODEV;
class = dev->class;
id = NULL;
if (!ata_dev_enabled(dev)) {
rc = -ENODEV;
goto fail;
}
/* allocate & read ID data */
rc = ata_dev_read_id(ap, dev, &class, post_reset, &id);
@ -2585,7 +2819,9 @@ int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev,
dev->id = id;
/* configure device according to the new ID */
return ata_dev_configure(ap, dev, 0);
rc = ata_dev_configure(ap, dev, 0);
if (rc == 0)
return 0;
fail:
printk(KERN_ERR "ata%u: dev %u revalidation failed (errno=%d)\n",
@ -2687,23 +2923,34 @@ static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev)
unsigned long xfer_mask;
int i;
xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
ap->udma_mask);
xfer_mask = ata_pack_xfermask(ap->pio_mask,
ap->mwdma_mask, ap->udma_mask);
/* Apply cable rule here. Don't apply it early because when
* we handle hot plug the cable type can itself change.
*/
if (ap->cbl == ATA_CBL_PATA40)
xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
/* FIXME: Use port-wide xfermask for now */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
struct ata_device *d = &ap->device[i];
if (!ata_dev_enabled(d))
if (ata_dev_absent(d))
continue;
xfer_mask &= ata_pack_xfermask(d->pio_mask, d->mwdma_mask,
d->udma_mask);
if (ata_dev_disabled(d)) {
/* to avoid violating device selection timing */
xfer_mask &= ata_pack_xfermask(d->pio_mask,
UINT_MAX, UINT_MAX);
continue;
}
xfer_mask &= ata_pack_xfermask(d->pio_mask,
d->mwdma_mask, d->udma_mask);
xfer_mask &= ata_id_xfermask(d->id);
if (ata_dma_blacklisted(d))
xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
/* Apply cable rule here. Don't apply it early because when
we handle hot plug the cable type can itself change */
if (ap->cbl == ATA_CBL_PATA40)
xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA);
}
if (ata_dma_blacklisted(dev))
@ -2714,11 +2961,12 @@ static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev)
if (hs->simplex_claimed)
xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
}
if (ap->ops->mode_filter)
xfer_mask = ap->ops->mode_filter(ap, dev, xfer_mask);
ata_unpack_xfermask(xfer_mask, &dev->pio_mask, &dev->mwdma_mask,
&dev->udma_mask);
ata_unpack_xfermask(xfer_mask, &dev->pio_mask,
&dev->mwdma_mask, &dev->udma_mask);
}
/**
@ -2752,7 +3000,7 @@ static unsigned int ata_dev_set_xfermode(struct ata_port *ap,
tf.protocol = ATA_PROT_NODATA;
tf.nsect = dev->xfer_mode;
err_mask = ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0);
err_mask = ata_exec_internal(ap, dev, &tf, NULL, DMA_NONE, NULL, 0);
DPRINTK("EXIT, err_mask=%x\n", err_mask);
return err_mask;
@ -2792,7 +3040,7 @@ static unsigned int ata_dev_init_params(struct ata_port *ap,
tf.nsect = sectors;
tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
err_mask = ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0);
err_mask = ata_exec_internal(ap, dev, &tf, NULL, DMA_NONE, NULL, 0);
DPRINTK("EXIT, err_mask=%x\n", err_mask);
return err_mask;
@ -3838,8 +4086,8 @@ fsm_start:
static void ata_pio_task(void *_data)
{
struct ata_port *ap = _data;
struct ata_queued_cmd *qc;
struct ata_queued_cmd *qc = _data;
struct ata_port *ap = qc->ap;
u8 status;
int poll_next;
@ -4392,7 +4640,7 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
ap = host_set->ports[i];
if (ap &&
!(ap->flags & ATA_FLAG_PORT_DISABLED)) {
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);
@ -4424,7 +4672,7 @@ static int ata_do_simple_cmd(struct ata_port *ap, struct ata_device *dev,
tf.flags |= ATA_TFLAG_DEVICE;
tf.protocol = ATA_PROT_NODATA;
err = ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0);
err = ata_exec_internal(ap, dev, &tf, NULL, DMA_NONE, NULL, 0);
if (err)
printk(KERN_ERR "%s: ata command failed: %d\n",
__FUNCTION__, err);
@ -4613,7 +4861,7 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
host->unique_id = ata_unique_id++;
host->max_cmd_len = 12;
ap->flags = ATA_FLAG_PORT_DISABLED;
ap->flags = ATA_FLAG_DISABLED;
ap->id = host->unique_id;
ap->host = host;
ap->ctl = ATA_DEVCTL_OBS;
@ -4628,6 +4876,7 @@ static void ata_host_init(struct ata_port *ap, struct Scsi_Host *host,
ap->flags |= ent->host_flags;
ap->ops = ent->port_ops;
ap->cbl = ATA_CBL_NONE;
ap->sata_spd_limit = UINT_MAX;
ap->active_tag = ATA_TAG_POISON;
ap->last_ctl = 0xFF;
@ -5083,7 +5332,6 @@ EXPORT_SYMBOL_GPL(ata_sg_init);
EXPORT_SYMBOL_GPL(ata_sg_init_one);
EXPORT_SYMBOL_GPL(__ata_qc_complete);
EXPORT_SYMBOL_GPL(ata_qc_issue_prot);
EXPORT_SYMBOL_GPL(ata_eng_timeout);
EXPORT_SYMBOL_GPL(ata_tf_load);
EXPORT_SYMBOL_GPL(ata_tf_read);
EXPORT_SYMBOL_GPL(ata_noop_dev_select);
@ -5123,15 +5371,12 @@ EXPORT_SYMBOL_GPL(ata_busy_sleep);
EXPORT_SYMBOL_GPL(ata_port_queue_task);
EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
EXPORT_SYMBOL_GPL(ata_scsi_error);
EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
EXPORT_SYMBOL_GPL(ata_scsi_release);
EXPORT_SYMBOL_GPL(ata_host_intr);
EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
EXPORT_SYMBOL_GPL(ata_timing_compute);
@ -5153,3 +5398,8 @@ EXPORT_SYMBOL_GPL(ata_device_suspend);
EXPORT_SYMBOL_GPL(ata_device_resume);
EXPORT_SYMBOL_GPL(ata_scsi_device_suspend);
EXPORT_SYMBOL_GPL(ata_scsi_device_resume);
EXPORT_SYMBOL_GPL(ata_scsi_error);
EXPORT_SYMBOL_GPL(ata_eng_timeout);
EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
EXPORT_SYMBOL_GPL(ata_eh_qc_retry);

264
drivers/scsi/libata-eh.c Normal file
View File

@ -0,0 +1,264 @@
/*
* libata-eh.c - libata error handling
*
* Maintained by: Jeff Garzik <jgarzik@pobox.com>
* Please ALWAYS copy linux-ide@vger.kernel.org
* on emails.
*
* Copyright 2006 Tejun Heo <htejun@gmail.com>
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139,
* USA.
*
*
* libata documentation is available via 'make {ps|pdf}docs',
* as Documentation/DocBook/libata.*
*
* Hardware documentation available from http://www.t13.org/ and
* http://www.sata-io.org/
*
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_cmnd.h>
#include <linux/libata.h>
#include "libata.h"
/**
* ata_scsi_timed_out - SCSI layer time out callback
* @cmd: timed out SCSI command
*
* Handles SCSI layer timeout. We race with normal completion of
* the qc for @cmd. If the qc is already gone, we lose and let
* the scsi command finish (EH_HANDLED). Otherwise, the qc has
* timed out and EH should be invoked. Prevent ata_qc_complete()
* from finishing it by setting EH_SCHEDULED and return
* EH_NOT_HANDLED.
*
* LOCKING:
* Called from timer context
*
* RETURNS:
* EH_HANDLED or EH_NOT_HANDLED
*/
enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
{
struct Scsi_Host *host = cmd->device->host;
struct ata_port *ap = (struct ata_port *) &host->hostdata[0];
unsigned long flags;
struct ata_queued_cmd *qc;
enum scsi_eh_timer_return ret = EH_HANDLED;
DPRINTK("ENTER\n");
spin_lock_irqsave(&ap->host_set->lock, flags);
qc = ata_qc_from_tag(ap, ap->active_tag);
if (qc) {
WARN_ON(qc->scsicmd != cmd);
qc->flags |= ATA_QCFLAG_EH_SCHEDULED;
qc->err_mask |= AC_ERR_TIMEOUT;
ret = EH_NOT_HANDLED;
}
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("EXIT, ret=%d\n", ret);
return ret;
}
/**
* ata_scsi_error - SCSI layer error handler callback
* @host: SCSI host on which error occurred
*
* Handles SCSI-layer-thrown error events.
*
* LOCKING:
* Inherited from SCSI layer (none, can sleep)
*
* RETURNS:
* Zero.
*/
int ata_scsi_error(struct Scsi_Host *host)
{
struct ata_port *ap = (struct ata_port *)&host->hostdata[0];
DPRINTK("ENTER\n");
/* synchronize with IRQ handler and port task */
spin_unlock_wait(&ap->host_set->lock);
ata_port_flush_task(ap);
WARN_ON(ata_qc_from_tag(ap, ap->active_tag) == NULL);
ap->ops->eng_timeout(ap);
WARN_ON(host->host_failed || !list_empty(&host->eh_cmd_q));
scsi_eh_flush_done_q(&ap->eh_done_q);
DPRINTK("EXIT\n");
return 0;
}
/**
* ata_qc_timeout - Handle timeout of queued command
* @qc: Command that timed out
*
* Some part of the kernel (currently, only the SCSI layer)
* has noticed that the active command on port @ap has not
* completed after a specified length of time. Handle this
* condition by disabling DMA (if necessary) and completing
* transactions, with error if necessary.
*
* This also handles the case of the "lost interrupt", where
* for some reason (possibly hardware bug, possibly driver bug)
* an interrupt was not delivered to the driver, even though the
* transaction completed successfully.
*
* LOCKING:
* Inherited from SCSI layer (none, can sleep)
*/
static void ata_qc_timeout(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_host_set *host_set = ap->host_set;
u8 host_stat = 0, drv_stat;
unsigned long flags;
DPRINTK("ENTER\n");
ap->hsm_task_state = HSM_ST_IDLE;
spin_lock_irqsave(&host_set->lock, flags);
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
case ATA_PROT_ATAPI_DMA:
host_stat = ap->ops->bmdma_status(ap);
/* before we do anything else, clear DMA-Start bit */
ap->ops->bmdma_stop(qc);
/* fall through */
default:
ata_altstatus(ap);
drv_stat = ata_chk_status(ap);
/* ack bmdma irq events */
ap->ops->irq_clear(ap);
printk(KERN_ERR "ata%u: command 0x%x timeout, stat 0x%x host_stat 0x%x\n",
ap->id, qc->tf.command, drv_stat, host_stat);
/* complete taskfile transaction */
qc->err_mask |= ac_err_mask(drv_stat);
break;
}
spin_unlock_irqrestore(&host_set->lock, flags);
ata_eh_qc_complete(qc);
DPRINTK("EXIT\n");
}
/**
* ata_eng_timeout - Handle timeout of queued command
* @ap: Port on which timed-out command is active
*
* Some part of the kernel (currently, only the SCSI layer)
* has noticed that the active command on port @ap has not
* completed after a specified length of time. Handle this
* condition by disabling DMA (if necessary) and completing
* transactions, with error if necessary.
*
* This also handles the case of the "lost interrupt", where
* for some reason (possibly hardware bug, possibly driver bug)
* an interrupt was not delivered to the driver, even though the
* transaction completed successfully.
*
* LOCKING:
* Inherited from SCSI layer (none, can sleep)
*/
void ata_eng_timeout(struct ata_port *ap)
{
DPRINTK("ENTER\n");
ata_qc_timeout(ata_qc_from_tag(ap, ap->active_tag));
DPRINTK("EXIT\n");
}
static void ata_eh_scsidone(struct scsi_cmnd *scmd)
{
/* nada */
}
static void __ata_eh_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct scsi_cmnd *scmd = qc->scsicmd;
unsigned long flags;
spin_lock_irqsave(&ap->host_set->lock, flags);
qc->scsidone = ata_eh_scsidone;
__ata_qc_complete(qc);
WARN_ON(ata_tag_valid(qc->tag));
spin_unlock_irqrestore(&ap->host_set->lock, flags);
scsi_eh_finish_cmd(scmd, &ap->eh_done_q);
}
/**
* ata_eh_qc_complete - Complete an active ATA command from EH
* @qc: Command to complete
*
* Indicate to the mid and upper layers that an ATA command has
* completed. To be used from EH.
*/
void ata_eh_qc_complete(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *scmd = qc->scsicmd;
scmd->retries = scmd->allowed;
__ata_eh_qc_complete(qc);
}
/**
* ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH
* @qc: Command to retry
*
* Indicate to the mid and upper layers that an ATA command
* should be retried. To be used from EH.
*
* SCSI midlayer limits the number of retries to scmd->allowed.
* scmd->retries is decremented for commands which get retried
* due to unrelated failures (qc->err_mask is zero).
*/
void ata_eh_qc_retry(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *scmd = qc->scsicmd;
if (!qc->err_mask && scmd->retries)
scmd->retries--;
__ata_eh_qc_complete(qc);
}

172
drivers/scsi/libata-scsi.c
View File

@ -53,7 +53,6 @@
typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
static struct ata_device *
ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev);
enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
#define RW_RECOVERY_MPAGE 0x1
#define RW_RECOVERY_MPAGE_LEN 12
@ -545,17 +544,12 @@ void ata_gen_ata_desc_sense(struct ata_queued_cmd *qc)
cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
/*
* Read the controller registers.
*/
WARN_ON(qc->ap->ops->tf_read == NULL);
qc->ap->ops->tf_read(qc->ap, tf);
/*
* Use ata_to_sense_error() to map status register bits
* onto sense key, asc & ascq.
*/
if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
if (qc->err_mask ||
tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
&sb[1], &sb[2], &sb[3]);
sb[1] &= 0x0f;
@ -620,17 +614,12 @@ void ata_gen_fixed_sense(struct ata_queued_cmd *qc)
cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
/*
* Read the controller registers.
*/
WARN_ON(qc->ap->ops->tf_read == NULL);
qc->ap->ops->tf_read(qc->ap, tf);
/*
* Use ata_to_sense_error() to map status register bits
* onto sense key, asc & ascq.
*/
if (tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
if (qc->err_mask ||
tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) {
ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
&sb[2], &sb[12], &sb[13]);
sb[2] &= 0x0f;
@ -723,141 +712,6 @@ int ata_scsi_slave_config(struct scsi_device *sdev)
return 0; /* scsi layer doesn't check return value, sigh */
}
/**
* ata_scsi_timed_out - SCSI layer time out callback
* @cmd: timed out SCSI command
*
* Handles SCSI layer timeout. We race with normal completion of
* the qc for @cmd. If the qc is already gone, we lose and let
* the scsi command finish (EH_HANDLED). Otherwise, the qc has
* timed out and EH should be invoked. Prevent ata_qc_complete()
* from finishing it by setting EH_SCHEDULED and return
* EH_NOT_HANDLED.
*
* LOCKING:
* Called from timer context
*
* RETURNS:
* EH_HANDLED or EH_NOT_HANDLED
*/
enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd)
{
struct Scsi_Host *host = cmd->device->host;
struct ata_port *ap = (struct ata_port *) &host->hostdata[0];
unsigned long flags;
struct ata_queued_cmd *qc;
enum scsi_eh_timer_return ret = EH_HANDLED;
DPRINTK("ENTER\n");
spin_lock_irqsave(&ap->host_set->lock, flags);
qc = ata_qc_from_tag(ap, ap->active_tag);
if (qc) {
WARN_ON(qc->scsicmd != cmd);
qc->flags |= ATA_QCFLAG_EH_SCHEDULED;
qc->err_mask |= AC_ERR_TIMEOUT;
ret = EH_NOT_HANDLED;
}
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("EXIT, ret=%d\n", ret);
return ret;
}
/**
* ata_scsi_error - SCSI layer error handler callback
* @host: SCSI host on which error occurred
*
* Handles SCSI-layer-thrown error events.
*
* LOCKING:
* Inherited from SCSI layer (none, can sleep)
*
* RETURNS:
* Zero.
*/
int ata_scsi_error(struct Scsi_Host *host)
{
struct ata_port *ap;
unsigned long flags;
DPRINTK("ENTER\n");
ap = (struct ata_port *) &host->hostdata[0];
spin_lock_irqsave(&ap->host_set->lock, flags);
WARN_ON(ap->flags & ATA_FLAG_IN_EH);
ap->flags |= ATA_FLAG_IN_EH;
WARN_ON(ata_qc_from_tag(ap, ap->active_tag) == NULL);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
ata_port_flush_task(ap);
ap->ops->eng_timeout(ap);
WARN_ON(host->host_failed || !list_empty(&host->eh_cmd_q));
scsi_eh_flush_done_q(&ap->eh_done_q);
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_IN_EH;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
DPRINTK("EXIT\n");
return 0;
}
static void ata_eh_scsidone(struct scsi_cmnd *scmd)
{
/* nada */
}
static void __ata_eh_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct scsi_cmnd *scmd = qc->scsicmd;
unsigned long flags;
spin_lock_irqsave(&ap->host_set->lock, flags);
qc->scsidone = ata_eh_scsidone;
__ata_qc_complete(qc);
WARN_ON(ata_tag_valid(qc->tag));
spin_unlock_irqrestore(&ap->host_set->lock, flags);
scsi_eh_finish_cmd(scmd, &ap->eh_done_q);
}
/**
* ata_eh_qc_complete - Complete an active ATA command from EH
* @qc: Command to complete
*
* Indicate to the mid and upper layers that an ATA command has
* completed. To be used from EH.
*/
void ata_eh_qc_complete(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *scmd = qc->scsicmd;
scmd->retries = scmd->allowed;
__ata_eh_qc_complete(qc);
}
/**
* ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH
* @qc: Command to retry
*
* Indicate to the mid and upper layers that an ATA command
* should be retried. To be used from EH.
*
* SCSI midlayer limits the number of retries to scmd->allowed.
* This function might need to adjust scmd->retries for commands
* which get retried due to unrelated NCQ failures.
*/
void ata_eh_qc_retry(struct ata_queued_cmd *qc)
{
__ata_eh_qc_complete(qc);
}
/**
* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
* @qc: Storage for translated ATA taskfile
@ -1197,6 +1051,7 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
u64 block;
u32 n_block;
qc->flags |= ATA_QCFLAG_IO;
tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||
@ -1343,11 +1198,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
*/
if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
((cdb[2] & 0x20) || need_sense)) {
qc->ap->ops->tf_read(qc->ap, &qc->tf);
ata_gen_ata_desc_sense(qc);
} else {
if (!need_sense) {
cmd->result = SAM_STAT_GOOD;
} else {
qc->ap->ops->tf_read(qc->ap, &qc->tf);
/* TODO: decide which descriptor format to use
* for 48b LBA devices and call that here
* instead of the fixed desc, which is only
@ -2139,13 +1997,15 @@ void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8
static void atapi_sense_complete(struct ata_queued_cmd *qc)
{
if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0))
if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) {
/* FIXME: not quite right; we don't want the
* translation of taskfile registers into
* a sense descriptors, since that's only
* correct for ATA, not ATAPI
*/
qc->ap->ops->tf_read(qc->ap, &qc->tf);
ata_gen_ata_desc_sense(qc);
}
qc->scsidone(qc->scsicmd);
ata_qc_free(qc);
@ -2213,17 +2073,15 @@ static void atapi_qc_complete(struct ata_queued_cmd *qc)
cmd->result = SAM_STAT_CHECK_CONDITION;
atapi_request_sense(qc);
return;
}
else if (unlikely(err_mask))
} else if (unlikely(err_mask)) {
/* FIXME: not quite right; we don't want the
* translation of taskfile registers into
* a sense descriptors, since that's only
* correct for ATA, not ATAPI
*/
qc->ap->ops->tf_read(qc->ap, &qc->tf);
ata_gen_ata_desc_sense(qc);
else {
} else {
u8 *scsicmd = cmd->cmnd;
if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) {
@ -2737,7 +2595,7 @@ void ata_scsi_scan_host(struct ata_port *ap)
struct ata_device *dev;
unsigned int i;
if (ap->flags & ATA_FLAG_PORT_DISABLED)
if (ap->flags & ATA_FLAG_DISABLED)
return;
for (i = 0; i < ATA_MAX_DEVICES; i++) {

17
drivers/scsi/libata.h
View File

@ -45,7 +45,20 @@ extern int libata_fua;
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
struct ata_device *dev);
extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc);
extern void ata_dev_disable(struct ata_port *ap, struct ata_device *dev);
extern void ata_port_flush_task(struct ata_port *ap);
extern unsigned ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
struct ata_taskfile *tf, const u8 *cdb,
int dma_dir, void *buf, unsigned int buflen);
extern int ata_down_sata_spd_limit(struct ata_port *ap);
extern int ata_set_sata_spd_needed(struct ata_port *ap);
extern int ata_down_xfermask_limit(struct ata_port *ap, struct ata_device *dev,
int force_pio0);
extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
extern int ata_do_reset(struct ata_port *ap,
ata_reset_fn_t reset,
ata_postreset_fn_t postreset,
int verbose, unsigned int *classes);
extern void ata_qc_free(struct ata_queued_cmd *qc);
extern void ata_qc_issue(struct ata_queued_cmd *qc);
extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
@ -60,7 +73,6 @@ extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
extern struct scsi_transport_template ata_scsi_transport_template;
extern void ata_scsi_scan_host(struct ata_port *ap);
extern int ata_scsi_error(struct Scsi_Host *host);
extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
unsigned int buflen);
@ -90,4 +102,7 @@ extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
unsigned int (*actor) (struct ata_scsi_args *args,
u8 *rbuf, unsigned int buflen));
/* libata-eh.c */
extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);
#endif /* __LIBATA_H__ */

4
drivers/scsi/pdc_adma.c
View File

@ -456,7 +456,7 @@ static inline unsigned int adma_intr_pkt(struct ata_host_set *host_set)
continue;
handled = 1;
adma_enter_reg_mode(ap);
if (ap->flags & ATA_FLAG_PORT_DISABLED)
if (ap->flags & ATA_FLAG_DISABLED)
continue;
pp = ap->private_data;
if (!pp || pp->state != adma_state_pkt)
@ -481,7 +481,7 @@ static inline unsigned int adma_intr_mmio(struct ata_host_set *host_set)
for (port_no = 0; port_no < host_set->n_ports; ++port_no) {
struct ata_port *ap;
ap = host_set->ports[port_no];
if (ap && (!(ap->flags & ATA_FLAG_PORT_DISABLED))) {
if (ap && (!(ap->flags & ATA_FLAG_DISABLED))) {
struct ata_queued_cmd *qc;
struct adma_port_priv *pp = ap->private_data;
if (!pp || pp->state != adma_state_mmio)

2
drivers/scsi/sata_mv.c
View File

@ -1397,7 +1397,7 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
}
}
if (ap && (ap->flags & ATA_FLAG_PORT_DISABLED))
if (ap && (ap->flags & ATA_FLAG_DISABLED))
continue;
err_mask = ac_err_mask(ata_status);

2
drivers/scsi/sata_nv.c
View File

@ -280,7 +280,7 @@ static irqreturn_t nv_interrupt (int irq, void *dev_instance,
ap = host_set->ports[i];
if (ap &&
!(ap->flags & ATA_FLAG_PORT_DISABLED)) {
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);

2
drivers/scsi/sata_promise.c
View File

@ -535,7 +535,7 @@ static irqreturn_t pdc_interrupt (int irq, void *dev_instance, struct pt_regs *r
ap = host_set->ports[i];
tmp = mask & (1 << (i + 1));
if (tmp && ap &&
!(ap->flags & ATA_FLAG_PORT_DISABLED)) {
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);

4
drivers/scsi/sata_qstor.c
View File

@ -395,7 +395,7 @@ static inline unsigned int qs_intr_pkt(struct ata_host_set *host_set)
DPRINTK("SFF=%08x%08x: sCHAN=%u sHST=%d sDST=%02x\n",
sff1, sff0, port_no, sHST, sDST);
handled = 1;
if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
struct qs_port_priv *pp = ap->private_data;
if (!pp || pp->state != qs_state_pkt)
@ -428,7 +428,7 @@ static inline unsigned int qs_intr_mmio(struct ata_host_set *host_set)
struct ata_port *ap;
ap = host_set->ports[port_no];
if (ap &&
!(ap->flags & ATA_FLAG_PORT_DISABLED)) {
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
struct qs_port_priv *pp = ap->private_data;
if (!pp || pp->state != qs_state_mmio)

2
drivers/scsi/sata_sil24.c
View File

@ -770,7 +770,7 @@ static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *
for (i = 0; i < host_set->n_ports; i++)
if (status & (1 << i)) {
struct ata_port *ap = host_set->ports[i];
if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
sil24_host_intr(host_set->ports[i]);
handled++;
} else

2
drivers/scsi/sata_sx4.c
View File

@ -834,7 +834,7 @@ static irqreturn_t pdc20621_interrupt (int irq, void *dev_instance, struct pt_re
tmp = mask & (1 << i);
VPRINTK("seq %u, port_no %u, ap %p, tmp %x\n", i, port_no, ap, tmp);
if (tmp && ap &&
!(ap->flags & ATA_FLAG_PORT_DISABLED)) {
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);

2
drivers/scsi/sata_vsc.c
View File

@ -229,7 +229,7 @@ static irqreturn_t vsc_sata_interrupt (int irq, void *dev_instance,
handled++;
}
if (ap && !(ap->flags & ATA_FLAG_PORT_DISABLED)) {
if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);

84
include/linux/libata.h
View File

@ -120,10 +120,12 @@ enum {
ATA_SHT_USE_CLUSTERING = 1,
/* struct ata_device stuff */
ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */
ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */
ATA_DFLAG_LBA = (1 << 2), /* device supports LBA */
ATA_DFLAG_CDB_INTR = (1 << 3), /* device asserts INTRQ when ready for CDB */
ATA_DFLAG_LBA = (1 << 0), /* device supports LBA */
ATA_DFLAG_LBA48 = (1 << 1), /* device supports LBA48 */
ATA_DFLAG_CDB_INTR = (1 << 2), /* device asserts INTRQ when ready for CDB */
ATA_DFLAG_CFG_MASK = (1 << 8) - 1,
ATA_DFLAG_PIO = (1 << 8), /* device currently in PIO mode */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
@ -133,33 +135,35 @@ enum {
ATA_DEV_NONE = 5, /* no device */
/* struct ata_port flags */
ATA_FLAG_SLAVE_POSS = (1 << 1), /* host supports slave dev */
ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */
/* (doesn't imply presence) */
ATA_FLAG_PORT_DISABLED = (1 << 2), /* port is disabled, ignore it */
ATA_FLAG_SATA = (1 << 3),
ATA_FLAG_NO_LEGACY = (1 << 4), /* no legacy mode check */
ATA_FLAG_SRST = (1 << 5), /* (obsolete) use ATA SRST, not E.D.D. */
ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */
ATA_FLAG_SATA_RESET = (1 << 7), /* (obsolete) use COMRESET */
ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */
ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD
* doesn't handle PIO interrupts */
ATA_FLAG_DEBUGMSG = (1 << 10),
ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */
ATA_FLAG_SATA = (1 << 1),
ATA_FLAG_NO_LEGACY = (1 << 2), /* no legacy mode check */
ATA_FLAG_MMIO = (1 << 3), /* use MMIO, not PIO */
ATA_FLAG_SRST = (1 << 4), /* (obsolete) use ATA SRST, not E.D.D. */
ATA_FLAG_SATA_RESET = (1 << 5), /* (obsolete) use COMRESET */
ATA_FLAG_NO_ATAPI = (1 << 6), /* No ATAPI support */
ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */
ATA_FLAG_PIO_LBA48 = (1 << 8), /* Host DMA engine is LBA28 only */
ATA_FLAG_IRQ_MASK = (1 << 9), /* Mask IRQ in PIO xfers */
ATA_FLAG_PIO_POLLING = (1 << 10), /* use polling PIO if LLD
* doesn't handle PIO interrupts */
ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */
ATA_FLAG_DEBUGMSG = (1 << 17),
ATA_FLAG_FLUSH_PORT_TASK = (1 << 18), /* flush port task */
ATA_FLAG_PIO_LBA48 = (1 << 13), /* Host DMA engine is LBA28 only */
ATA_FLAG_IRQ_MASK = (1 << 14), /* Mask IRQ in PIO xfers */
ATA_FLAG_DISABLED = (1 << 19), /* port is disabled, ignore it */
ATA_FLAG_SUSPENDED = (1 << 20), /* port is suspended */
ATA_FLAG_FLUSH_PORT_TASK = (1 << 15), /* Flush port task */
ATA_FLAG_IN_EH = (1 << 16), /* EH in progress */
/* bits 24:31 of ap->flags are reserved for LLDD specific flags */
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */
/* struct ata_queued_cmd flags */
ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */
ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
ATA_QCFLAG_EH_SCHEDULED = (1 << 5), /* EH scheduled */
ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
ATA_QCFLAG_EH_SCHEDULED = (1 << 4), /* EH scheduled */
/* host set flags */
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */
@ -205,10 +209,13 @@ enum {
/* size of buffer to pad xfers ending on unaligned boundaries */
ATA_DMA_PAD_SZ = 4,
ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE,
/* Masks for port functions */
/* masks for port functions */
ATA_PORT_PRIMARY = (1 << 0),
ATA_PORT_SECONDARY = (1 << 1),
/* how hard are we gonna try to probe/recover devices */
ATA_PROBE_MAX_TRIES = 3,
};
enum hsm_task_states {
@ -394,6 +401,7 @@ struct ata_port {
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
unsigned int sata_spd_limit; /* SATA PHY speed limit */
struct ata_device device[ATA_MAX_DEVICES];
@ -519,9 +527,6 @@ extern void ata_host_set_remove(struct ata_host_set *host_set);
extern int ata_scsi_detect(struct scsi_host_template *sht);
extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *));
extern int ata_scsi_error(struct Scsi_Host *host);
extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
extern int ata_scsi_release(struct Scsi_Host *host);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
extern int ata_scsi_device_resume(struct scsi_device *);
@ -570,7 +575,6 @@ extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
extern void __ata_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eng_timeout(struct ata_port *ap);
extern void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev,
struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *));
@ -625,6 +629,14 @@ extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bit
extern unsigned long ata_pci_default_filter(const struct ata_port *, struct ata_device *, unsigned long);
#endif /* CONFIG_PCI */
/*
* EH
*/
extern int ata_scsi_error(struct Scsi_Host *host);
extern void ata_eng_timeout(struct ata_port *ap);
extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
static inline int
ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc)
@ -678,6 +690,11 @@ static inline unsigned int ata_class_disabled(unsigned int class)
return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP;
}
static inline unsigned int ata_class_absent(unsigned int class)
{
return !ata_class_enabled(class) && !ata_class_disabled(class);
}
static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
{
return ata_class_enabled(dev->class);
@ -688,6 +705,11 @@ static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
return ata_class_disabled(dev->class);
}
static inline unsigned int ata_dev_absent(const struct ata_device *dev)
{
return ata_class_absent(dev->class);
}
static inline u8 ata_chk_status(struct ata_port *ap)
{
return ap->ops->check_status(ap);