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path: root/drivers/ata/libata-core.c
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Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c101
1 files changed, 75 insertions, 26 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 8e1039c8e159..3cc7096cfda7 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -774,7 +774,7 @@ int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev,
tf->lbam = (block >> 8) & 0xff;
tf->lbal = block & 0xff;
- tf->device = 1 << 6;
+ tf->device = ATA_LBA;
if (tf->flags & ATA_TFLAG_FUA)
tf->device |= 1 << 7;
} else if (dev->flags & ATA_DFLAG_LBA) {
@@ -2155,6 +2155,7 @@ int ata_dev_configure(struct ata_device *dev)
int print_info = ehc->i.flags & ATA_EHI_PRINTINFO;
const u16 *id = dev->id;
unsigned long xfer_mask;
+ unsigned int err_mask;
char revbuf[7]; /* XYZ-99\0 */
char fwrevbuf[ATA_ID_FW_REV_LEN+1];
char modelbuf[ATA_ID_PROD_LEN+1];
@@ -2323,6 +2324,26 @@ int ata_dev_configure(struct ata_device *dev)
}
}
+ /* check and mark DevSlp capability */
+ if (ata_id_has_devslp(dev->id))
+ dev->flags |= ATA_DFLAG_DEVSLP;
+
+ /* Obtain SATA Settings page from Identify Device Data Log,
+ * which contains DevSlp timing variables etc.
+ * Exclude old devices with ata_id_has_ncq()
+ */
+ if (ata_id_has_ncq(dev->id)) {
+ err_mask = ata_read_log_page(dev,
+ ATA_LOG_SATA_ID_DEV_DATA,
+ ATA_LOG_SATA_SETTINGS,
+ dev->sata_settings,
+ 1);
+ if (err_mask)
+ ata_dev_dbg(dev,
+ "failed to get Identify Device Data, Emask 0x%x\n",
+ err_mask);
+ }
+
dev->cdb_len = 16;
}
@@ -2351,8 +2372,6 @@ int ata_dev_configure(struct ata_device *dev)
(ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
(!sata_pmp_attached(ap) ||
sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
- unsigned int err_mask;
-
/* issue SET feature command to turn this on */
err_mask = ata_dev_set_feature(dev,
SETFEATURES_SATA_ENABLE, SATA_AN);
@@ -3598,7 +3617,7 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
switch (policy) {
case ATA_LPM_MAX_POWER:
/* disable all LPM transitions */
- scontrol |= (0x3 << 8);
+ scontrol |= (0x7 << 8);
/* initiate transition to active state */
if (spm_wakeup) {
scontrol |= (0x4 << 12);
@@ -3608,12 +3627,12 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
case ATA_LPM_MED_POWER:
/* allow LPM to PARTIAL */
scontrol &= ~(0x1 << 8);
- scontrol |= (0x2 << 8);
+ scontrol |= (0x6 << 8);
break;
case ATA_LPM_MIN_POWER:
if (ata_link_nr_enabled(link) > 0)
/* no restrictions on LPM transitions */
- scontrol &= ~(0x3 << 8);
+ scontrol &= ~(0x7 << 8);
else {
/* empty port, power off */
scontrol &= ~0xf;
@@ -4472,6 +4491,7 @@ unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature)
DPRINTK("EXIT, err_mask=%x\n", err_mask);
return err_mask;
}
+EXPORT_SYMBOL_GPL(ata_dev_set_feature);
/**
* ata_dev_init_params - Issue INIT DEV PARAMS command
@@ -5253,16 +5273,20 @@ bool ata_link_offline(struct ata_link *link)
#ifdef CONFIG_PM
static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
unsigned int action, unsigned int ehi_flags,
- int wait)
+ int *async)
{
struct ata_link *link;
unsigned long flags;
- int rc;
+ int rc = 0;
/* Previous resume operation might still be in
* progress. Wait for PM_PENDING to clear.
*/
if (ap->pflags & ATA_PFLAG_PM_PENDING) {
+ if (async) {
+ *async = -EAGAIN;
+ return 0;
+ }
ata_port_wait_eh(ap);
WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING);
}
@@ -5271,10 +5295,10 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
spin_lock_irqsave(ap->lock, flags);
ap->pm_mesg = mesg;
- if (wait) {
- rc = 0;
+ if (async)
+ ap->pm_result = async;
+ else
ap->pm_result = &rc;
- }
ap->pflags |= ATA_PFLAG_PM_PENDING;
ata_for_each_link(link, ap, HOST_FIRST) {
@@ -5287,7 +5311,7 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
spin_unlock_irqrestore(ap->lock, flags);
/* wait and check result */
- if (wait) {
+ if (!async) {
ata_port_wait_eh(ap);
WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING);
}
@@ -5295,9 +5319,8 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg,
return rc;
}
-static int ata_port_suspend_common(struct device *dev, pm_message_t mesg)
+static int __ata_port_suspend_common(struct ata_port *ap, pm_message_t mesg, int *async)
{
- struct ata_port *ap = to_ata_port(dev);
unsigned int ehi_flags = ATA_EHI_QUIET;
int rc;
@@ -5312,10 +5335,17 @@ static int ata_port_suspend_common(struct device *dev, pm_message_t mesg)
if (mesg.event == PM_EVENT_SUSPEND)
ehi_flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_NO_RECOVERY;
- rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, 1);
+ rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, async);
return rc;
}
+static int ata_port_suspend_common(struct device *dev, pm_message_t mesg)
+{
+ struct ata_port *ap = to_ata_port(dev);
+
+ return __ata_port_suspend_common(ap, mesg, NULL);
+}
+
static int ata_port_suspend(struct device *dev)
{
if (pm_runtime_suspended(dev))
@@ -5340,16 +5370,22 @@ static int ata_port_poweroff(struct device *dev)
return ata_port_suspend_common(dev, PMSG_HIBERNATE);
}
-static int ata_port_resume_common(struct device *dev)
+static int __ata_port_resume_common(struct ata_port *ap, int *async)
{
- struct ata_port *ap = to_ata_port(dev);
int rc;
rc = ata_port_request_pm(ap, PMSG_ON, ATA_EH_RESET,
- ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 1);
+ ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, async);
return rc;
}
+static int ata_port_resume_common(struct device *dev)
+{
+ struct ata_port *ap = to_ata_port(dev);
+
+ return __ata_port_resume_common(ap, NULL);
+}
+
static int ata_port_resume(struct device *dev)
{
int rc;
@@ -5382,6 +5418,24 @@ static const struct dev_pm_ops ata_port_pm_ops = {
.runtime_idle = ata_port_runtime_idle,
};
+/* sas ports don't participate in pm runtime management of ata_ports,
+ * and need to resume ata devices at the domain level, not the per-port
+ * level. sas suspend/resume is async to allow parallel port recovery
+ * since sas has multiple ata_port instances per Scsi_Host.
+ */
+int ata_sas_port_async_suspend(struct ata_port *ap, int *async)
+{
+ return __ata_port_suspend_common(ap, PMSG_SUSPEND, async);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_async_suspend);
+
+int ata_sas_port_async_resume(struct ata_port *ap, int *async)
+{
+ return __ata_port_resume_common(ap, async);
+}
+EXPORT_SYMBOL_GPL(ata_sas_port_async_resume);
+
+
/**
* ata_host_suspend - suspend host
* @host: host to suspend
@@ -5927,24 +5981,18 @@ int ata_host_start(struct ata_host *host)
}
/**
- * ata_sas_host_init - Initialize a host struct
+ * ata_sas_host_init - Initialize a host struct for sas (ipr, libsas)
* @host: host to initialize
* @dev: device host is attached to
- * @flags: host flags
* @ops: port_ops
*
- * LOCKING:
- * PCI/etc. bus probe sem.
- *
*/
-/* KILLME - the only user left is ipr */
void ata_host_init(struct ata_host *host, struct device *dev,
- unsigned long flags, struct ata_port_operations *ops)
+ struct ata_port_operations *ops)
{
spin_lock_init(&host->lock);
mutex_init(&host->eh_mutex);
host->dev = dev;
- host->flags = flags;
host->ops = ops;
}
@@ -6388,6 +6436,7 @@ static int __init ata_parse_force_one(char **cur,
{ "nohrst", .lflags = ATA_LFLAG_NO_HRST },
{ "nosrst", .lflags = ATA_LFLAG_NO_SRST },
{ "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
+ { "rstonce", .lflags = ATA_LFLAG_RST_ONCE },
};
char *start = *cur, *p = *cur;
char *id, *val, *endp;
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-18 21:11:30 +0300