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[PATCH] libata: add ap->pflags and move core dynamic flags to it
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ap->flags is way too clamped.  Separate out core dynamic flags to
ap->pflags.  ATA_FLAG_DISABLED is a dynamic flag but left alone as
it's referenced by a lot of LLDs and it's gonna be removed once all
LLDs are converted to new EH.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@htejun
htejun authored and Jeff Garzik committed Jul 6, 2006
1 parent e6d902a commit b51e9e5
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Showing 6 changed files with 58 additions and 52 deletions.
2 changes: 1 addition & 1 deletion drivers/scsi/ahci.c
View file
Expand Up @@ -1052,7 +1052,7 @@ static void ahci_thaw(struct ata_port *ap)

static void ahci_error_handler(struct ata_port *ap)
{
if (!(ap->flags & ATA_FLAG_FROZEN)) {
if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
/* restart engine */
ahci_stop_engine(ap);
ahci_start_engine(ap);
Expand Down
24 changes: 12 additions & 12 deletions drivers/scsi/libata-core.c
View file
Expand Up @@ -907,7 +907,7 @@ void ata_port_queue_task(struct ata_port *ap, void (*fn)(void *), void *data,
{
int rc;

if (ap->flags & ATA_FLAG_FLUSH_PORT_TASK)
if (ap->pflags & ATA_PFLAG_FLUSH_PORT_TASK)
return;

PREPARE_WORK(&ap->port_task, fn, data);
Expand Down Expand Up @@ -938,7 +938,7 @@ void ata_port_flush_task(struct ata_port *ap)
DPRINTK("ENTER\n");

spin_lock_irqsave(ap->lock, flags);
ap->flags |= ATA_FLAG_FLUSH_PORT_TASK;
ap->pflags |= ATA_PFLAG_FLUSH_PORT_TASK;
spin_unlock_irqrestore(ap->lock, flags);

DPRINTK("flush #1\n");
Expand All @@ -957,7 +957,7 @@ void ata_port_flush_task(struct ata_port *ap)
}

spin_lock_irqsave(ap->lock, flags);
ap->flags &= ~ATA_FLAG_FLUSH_PORT_TASK;
ap->pflags &= ~ATA_PFLAG_FLUSH_PORT_TASK;
spin_unlock_irqrestore(ap->lock, flags);

if (ata_msg_ctl(ap))
Expand Down Expand Up @@ -1009,7 +1009,7 @@ unsigned ata_exec_internal(struct ata_device *dev,
spin_lock_irqsave(ap->lock, flags);

/* no internal command while frozen */
if (ap->flags & ATA_FLAG_FROZEN) {
if (ap->pflags & ATA_PFLAG_FROZEN) {
spin_unlock_irqrestore(ap->lock, flags);
return AC_ERR_SYSTEM;
}
Expand Down Expand Up @@ -2641,7 +2641,7 @@ int ata_std_prereset(struct ata_port *ap)

/* if SATA, resume phy */
if (ap->cbl == ATA_CBL_SATA) {
if (ap->flags & ATA_FLAG_LOADING)
if (ap->pflags & ATA_PFLAG_LOADING)
timing = sata_deb_timing_boot;
else
timing = sata_deb_timing_eh;
Expand Down Expand Up @@ -4294,7 +4294,7 @@ static struct ata_queued_cmd *ata_qc_new(struct ata_port *ap)
unsigned int i;

/* no command while frozen */
if (unlikely(ap->flags & ATA_FLAG_FROZEN))
if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
return NULL;

/* the last tag is reserved for internal command. */
Expand Down Expand Up @@ -4416,7 +4416,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
* taken care of.
*/
if (ap->ops->error_handler) {
WARN_ON(ap->flags & ATA_FLAG_FROZEN);
WARN_ON(ap->pflags & ATA_PFLAG_FROZEN);

if (unlikely(qc->err_mask))
qc->flags |= ATA_QCFLAG_FAILED;
Expand Down Expand Up @@ -5051,13 +5051,13 @@ int ata_device_resume(struct ata_device *dev)
{
struct ata_port *ap = dev->ap;

if (ap->flags & ATA_FLAG_SUSPENDED) {
if (ap->pflags & ATA_PFLAG_SUSPENDED) {
struct ata_device *failed_dev;

ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);

ap->flags &= ~ATA_FLAG_SUSPENDED;
ap->pflags &= ~ATA_PFLAG_SUSPENDED;
while (ata_set_mode(ap, &failed_dev))
ata_dev_disable(failed_dev);
}
Expand Down Expand Up @@ -5088,7 +5088,7 @@ int ata_device_suspend(struct ata_device *dev, pm_message_t state)

if (state.event != PM_EVENT_FREEZE)
ata_standby_drive(dev);
ap->flags |= ATA_FLAG_SUSPENDED;
ap->pflags |= ATA_PFLAG_SUSPENDED;
return 0;
}

Expand Down Expand Up @@ -5459,7 +5459,7 @@ int ata_device_add(const struct ata_probe_ent *ent)
ap->eh_info.probe_mask = (1 << ATA_MAX_DEVICES) - 1;
ap->eh_info.action |= ATA_EH_SOFTRESET;

ap->flags |= ATA_FLAG_LOADING;
ap->pflags |= ATA_PFLAG_LOADING;
ata_port_schedule_eh(ap);

spin_unlock_irqrestore(ap->lock, flags);
Expand Down Expand Up @@ -5527,7 +5527,7 @@ void ata_port_detach(struct ata_port *ap)

/* tell EH we're leaving & flush EH */
spin_lock_irqsave(ap->lock, flags);
ap->flags |= ATA_FLAG_UNLOADING;
ap->pflags |= ATA_PFLAG_UNLOADING;
spin_unlock_irqrestore(ap->lock, flags);

ata_port_wait_eh(ap);
Expand Down
50 changes: 25 additions & 25 deletions drivers/scsi/libata-eh.c
View file
Expand Up @@ -270,13 +270,13 @@ void ata_scsi_error(struct Scsi_Host *host)
ap->eh_context.i = ap->eh_info;
memset(&ap->eh_info, 0, sizeof(ap->eh_info));

ap->flags |= ATA_FLAG_EH_IN_PROGRESS;
ap->flags &= ~ATA_FLAG_EH_PENDING;
ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
ap->pflags &= ~ATA_PFLAG_EH_PENDING;

spin_unlock_irqrestore(ap_lock, flags);

/* invoke EH. if unloading, just finish failed qcs */
if (!(ap->flags & ATA_FLAG_UNLOADING))
if (!(ap->pflags & ATA_PFLAG_UNLOADING))
ap->ops->error_handler(ap);
else
ata_eh_finish(ap);
Expand All @@ -287,7 +287,7 @@ void ata_scsi_error(struct Scsi_Host *host)
*/
spin_lock_irqsave(ap_lock, flags);

if (ap->flags & ATA_FLAG_EH_PENDING) {
if (ap->pflags & ATA_PFLAG_EH_PENDING) {
if (--repeat_cnt) {
ata_port_printk(ap, KERN_INFO,
"EH pending after completion, "
Expand Down Expand Up @@ -323,19 +323,19 @@ void ata_scsi_error(struct Scsi_Host *host)
/* clean up */
spin_lock_irqsave(ap_lock, flags);

if (ap->flags & ATA_FLAG_LOADING) {
ap->flags &= ~ATA_FLAG_LOADING;
if (ap->pflags & ATA_PFLAG_LOADING) {
ap->pflags &= ~ATA_PFLAG_LOADING;
} else {
if (ap->flags & ATA_FLAG_SCSI_HOTPLUG)
if (ap->pflags & ATA_PFLAG_SCSI_HOTPLUG)
queue_work(ata_aux_wq, &ap->hotplug_task);
if (ap->flags & ATA_FLAG_RECOVERED)
if (ap->pflags & ATA_PFLAG_RECOVERED)
ata_port_printk(ap, KERN_INFO, "EH complete\n");
}

ap->flags &= ~(ATA_FLAG_SCSI_HOTPLUG | ATA_FLAG_RECOVERED);
ap->pflags &= ~(ATA_PFLAG_SCSI_HOTPLUG | ATA_PFLAG_RECOVERED);

/* tell wait_eh that we're done */
ap->flags &= ~ATA_FLAG_EH_IN_PROGRESS;
ap->pflags &= ~ATA_PFLAG_EH_IN_PROGRESS;
wake_up_all(&ap->eh_wait_q);

spin_unlock_irqrestore(ap_lock, flags);
Expand All @@ -360,7 +360,7 @@ void ata_port_wait_eh(struct ata_port *ap)
retry:
spin_lock_irqsave(ap->lock, flags);

while (ap->flags & (ATA_FLAG_EH_PENDING | ATA_FLAG_EH_IN_PROGRESS)) {
while (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) {
prepare_to_wait(&ap->eh_wait_q, &wait, TASK_UNINTERRUPTIBLE);
spin_unlock_irqrestore(ap->lock, flags);
schedule();
Expand Down Expand Up @@ -489,7 +489,7 @@ void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
WARN_ON(!ap->ops->error_handler);

qc->flags |= ATA_QCFLAG_FAILED;
qc->ap->flags |= ATA_FLAG_EH_PENDING;
qc->ap->pflags |= ATA_PFLAG_EH_PENDING;

/* The following will fail if timeout has already expired.
* ata_scsi_error() takes care of such scmds on EH entry.
Expand All @@ -513,7 +513,7 @@ void ata_port_schedule_eh(struct ata_port *ap)
{
WARN_ON(!ap->ops->error_handler);

ap->flags |= ATA_FLAG_EH_PENDING;
ap->pflags |= ATA_PFLAG_EH_PENDING;
scsi_schedule_eh(ap->host);

DPRINTK("port EH scheduled\n");
Expand Down Expand Up @@ -578,7 +578,7 @@ static void __ata_port_freeze(struct ata_port *ap)
if (ap->ops->freeze)
ap->ops->freeze(ap);

ap->flags |= ATA_FLAG_FROZEN;
ap->pflags |= ATA_PFLAG_FROZEN;

DPRINTK("ata%u port frozen\n", ap->id);
}
Expand Down Expand Up @@ -646,7 +646,7 @@ void ata_eh_thaw_port(struct ata_port *ap)

spin_lock_irqsave(ap->lock, flags);

ap->flags &= ~ATA_FLAG_FROZEN;
ap->pflags &= ~ATA_PFLAG_FROZEN;

if (ap->ops->thaw)
ap->ops->thaw(ap);
Expand Down Expand Up @@ -731,7 +731,7 @@ static void ata_eh_detach_dev(struct ata_device *dev)

if (ata_scsi_offline_dev(dev)) {
dev->flags |= ATA_DFLAG_DETACHED;
ap->flags |= ATA_FLAG_SCSI_HOTPLUG;
ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
}

/* clear per-dev EH actions */
Expand Down Expand Up @@ -761,7 +761,7 @@ static void ata_eh_about_to_do(struct ata_port *ap, struct ata_device *dev,

spin_lock_irqsave(ap->lock, flags);
ata_eh_clear_action(dev, &ap->eh_info, action);
ap->flags |= ATA_FLAG_RECOVERED;
ap->pflags |= ATA_PFLAG_RECOVERED;
spin_unlock_irqrestore(ap->lock, flags);
}

Expand Down Expand Up @@ -1027,7 +1027,7 @@ static void ata_eh_analyze_ncq_error(struct ata_port *ap)
int tag, rc;

/* if frozen, we can't do much */
if (ap->flags & ATA_FLAG_FROZEN)
if (ap->pflags & ATA_PFLAG_FROZEN)
return;

/* is it NCQ device error? */
Expand Down Expand Up @@ -1327,7 +1327,7 @@ static void ata_eh_autopsy(struct ata_port *ap)
}

/* enforce default EH actions */
if (ap->flags & ATA_FLAG_FROZEN ||
if (ap->pflags & ATA_PFLAG_FROZEN ||
all_err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT))
action |= ATA_EH_SOFTRESET;
else if (all_err_mask)
Expand Down Expand Up @@ -1385,7 +1385,7 @@ static void ata_eh_report(struct ata_port *ap)
return;

frozen = "";
if (ap->flags & ATA_FLAG_FROZEN)
if (ap->pflags & ATA_PFLAG_FROZEN)
frozen = " frozen";

if (ehc->i.dev) {
Expand Down Expand Up @@ -1465,7 +1465,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
struct ata_eh_context *ehc = &ap->eh_context;
unsigned int *classes = ehc->classes;
int tries = ATA_EH_RESET_TRIES;
int verbose = !(ap->flags & ATA_FLAG_LOADING);
int verbose = !(ap->pflags & ATA_PFLAG_LOADING);
unsigned int action;
ata_reset_fn_t reset;
int i, did_followup_srst, rc;
Expand Down Expand Up @@ -1636,7 +1636,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
}

spin_lock_irqsave(ap->lock, flags);
ap->flags |= ATA_FLAG_SCSI_HOTPLUG;
ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
spin_unlock_irqrestore(ap->lock, flags);
}
}
Expand Down Expand Up @@ -1673,7 +1673,7 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
struct ata_eh_context *ehc = &ap->eh_context;
int i;

if (ap->flags & ATA_FLAG_FROZEN || ata_port_nr_enabled(ap))
if (ap->pflags & ATA_PFLAG_FROZEN || ata_port_nr_enabled(ap))
return 0;

/* skip if class codes for all vacant slots are ATA_DEV_NONE */
Expand Down Expand Up @@ -1744,7 +1744,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
rc = 0;

/* if UNLOADING, finish immediately */
if (ap->flags & ATA_FLAG_UNLOADING)
if (ap->pflags & ATA_PFLAG_UNLOADING)
goto out;

/* skip EH if possible. */
Expand Down Expand Up @@ -1908,7 +1908,7 @@ void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset)
{
if (!(ap->flags & ATA_FLAG_LOADING)) {
if (!(ap->pflags & ATA_PFLAG_LOADING)) {
ata_eh_autopsy(ap);
ata_eh_report(ap);
}
Expand Down
2 changes: 1 addition & 1 deletion drivers/scsi/libata-scsi.c
View file
Expand Up @@ -2930,7 +2930,7 @@ void ata_scsi_hotplug(void *data)
struct ata_port *ap = data;
int i;

if (ap->flags & ATA_FLAG_UNLOADING) {
if (ap->pflags & ATA_PFLAG_UNLOADING) {
DPRINTK("ENTER/EXIT - unloading\n");
return;
}
Expand Down
2 changes: 1 addition & 1 deletion drivers/scsi/sata_sil.c
View file
Expand Up @@ -370,7 +370,7 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
* during hardreset makes controllers with broken SIEN
* repeat probing needlessly.
*/
if (!(ap->flags & ATA_FLAG_FROZEN)) {
if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
ata_ehi_hotplugged(&ap->eh_info);
ap->eh_info.serror |= serror;
}
Expand Down
30 changes: 18 additions & 12 deletions include/linux/libata.h
View file
Expand Up @@ -160,22 +160,27 @@ enum {
ATA_FLAG_HRST_TO_RESUME = (1 << 11), /* hardreset to resume phy */
ATA_FLAG_SKIP_D2H_BSY = (1 << 12), /* can't wait for the first D2H
* Register FIS clearing BSY */

ATA_FLAG_DEBUGMSG = (1 << 13),
ATA_FLAG_FLUSH_PORT_TASK = (1 << 14), /* flush port task */

ATA_FLAG_EH_PENDING = (1 << 15), /* EH pending */
ATA_FLAG_EH_IN_PROGRESS = (1 << 16), /* EH in progress */
ATA_FLAG_FROZEN = (1 << 17), /* port is frozen */
ATA_FLAG_RECOVERED = (1 << 18), /* recovery action performed */
ATA_FLAG_LOADING = (1 << 19), /* boot/loading probe */
ATA_FLAG_UNLOADING = (1 << 20), /* module is unloading */
ATA_FLAG_SCSI_HOTPLUG = (1 << 21), /* SCSI hotplug scheduled */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
* removed in not-too-distant future.
*/
ATA_FLAG_DISABLED = (1 << 23), /* port is disabled, ignore it */

/* bits 24:31 of ap->flags are reserved for LLD specific flags */

ATA_FLAG_DISABLED = (1 << 22), /* port is disabled, ignore it */
ATA_FLAG_SUSPENDED = (1 << 23), /* port is suspended (power) */
/* struct ata_port pflags */
ATA_PFLAG_EH_PENDING = (1 << 0), /* EH pending */
ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
ATA_PFLAG_FROZEN = (1 << 2), /* port is frozen */
ATA_PFLAG_RECOVERED = (1 << 3), /* recovery action performed */
ATA_PFLAG_LOADING = (1 << 4), /* boot/loading probe */
ATA_PFLAG_UNLOADING = (1 << 5), /* module is unloading */
ATA_PFLAG_SCSI_HOTPLUG = (1 << 6), /* SCSI hotplug scheduled */

/* bits 24:31 of ap->flags are reserved for LLDD specific flags */
ATA_PFLAG_FLUSH_PORT_TASK = (1 << 16), /* flush port task */
ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */

/* struct ata_queued_cmd flags */
ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */
Expand Down Expand Up @@ -486,6 +491,7 @@ struct ata_port {
const struct ata_port_operations *ops;
spinlock_t *lock;
unsigned long flags; /* ATA_FLAG_xxx */
unsigned int pflags; /* ATA_PFLAG_xxx */
unsigned int id; /* unique id req'd by scsi midlyr */
unsigned int port_no; /* unique port #; from zero */
unsigned int hard_port_no; /* hardware port #; from zero */
Expand Down

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