[git patches] libata updates

Jeff Garzik
2008-05-19T22:57:51Z

sata_mv, sata_promise and PMP fixes

Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus

to receive the following updates:

drivers/ata/libata-acpi.c | 75 ++++++++++------
drivers/ata/libata-core.c | 40 +++++----
drivers/ata/libata-eh.c | 207 +++++++++++++++++++++++-------------------
drivers/ata/libata-pmp.c | 44 +++++-----
drivers/ata/libata-scsi.c | 6 --
drivers/ata/pata_ali.c | 10 +-
drivers/ata/pata_amd.c | 14 ++--
drivers/ata/pata_at32.c | 2 -
drivers/ata/pata_bf54x.c | 5 +-
drivers/ata/pata_cypress.c | 8 +-
drivers/ata/pata_legacy.c | 50 +++++-----
drivers/ata/pata_ns87410.c | 6 +-
drivers/ata/pata_ns87415.c | 4 +-
drivers/ata/pata_qdi.c | 16 ++--
drivers/ata/pata_sl82c105.c | 2 +-
drivers/ata/pata_via.c | 14 ++--
drivers/ata/pata_winbond.c | 6 +-
drivers/ata/sata_mv.c | 163 +++++++++++++++++++---------------
drivers/ata/sata_promise.c | 148 +++++++++++++++----------------
drivers/ata/sata_sil24.c | 11 +++
include/linux/libata.h | 6 +-
21 files changed, 453 insertions(+), 384 deletions(-)

Christophe Jaillet (1):
avr32/pata: avoid unnecessary memset (updated after comments)

Harvey Harrison (1):
ata: remove FIT() macro

Jeff Garzik (1):
drivers/ata: trim trailing whitespace

Mark Lord (10):
sata_mv: always do softreset
sata_mv: fis irq register fixes
sata_mv: group genIIe flags
sata_mv: async notify for genIIe only
sata_mv: don't blindly enable IRQs
sata_mv: consolidate main_irq_mask updates
sata_mv: fix pmp drives not found
sata_mv: disregard masked irqs
sata_mv: cache main_irq_mask register in hpriv
sata_mv: ensure empty request queue for FBS-NCQ EH

Matthew Garrett (1):
Fixups to ATA ACPI hotplug

Mikael Pettersson (3):
sata_promise: fix irq clearing buglets
sata_promise: mmio access cleanups
sata_promise: other cleanups

Sonic Zhang (1):
pata-bf54x: Set ATAPI HSM to control IDE device terminate sequence.

Tejun Heo (10):
libata: fix sata_link_hardreset() @online out parameter handling
libata: reorganize ata_eh_reset() no reset method path
libata: move reset freeze/thaw handling into ata_eh_reset()
libata: kill hotplug related race condition
libata: ignore recovered PHY errors
libata: increase PMP register access timeout to 3s
libata: make sure PMP notification is turned off during recovery
libata: don't schedule LPM action seperately during probing
sata_sil24: don't use NCQ if marvell 4140 PMP is attached
libata: ignore SIMG4726 config pseudo device

diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 70b77e0..dbf6ca7 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -118,8 +118,8 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
}

-static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
- u32 event)
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device
+ *dev, u32 event)
{
char event_string[12];
char *envp[] = { event_string, NULL };
@@ -127,6 +127,9 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
struct kobject *kobj = NULL;
int wait = 0;
unsigned long flags;
+ acpi_handle handle, tmphandle;
+ unsigned long sta;
+ acpi_status status;

if (!ap)
ap = dev->link->ap;
@@ -134,32 +137,57 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,

spin_lock_irqsave(ap->lock, flags);

+ if (dev)
+ handle = dev->acpi_handle;
+ else
+ handle = ap->acpi_handle;
+
+ status = acpi_get_handle(handle, "_EJ0", &tmphandle);
+ if (ACPI_FAILURE(status)) {
+ /* This device is not ejectable */
+ spin_unlock_irqrestore(ap->lock, flags);
+ return;
+ }
+
+ status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+ if (ACPI_FAILURE(status)) {
+ printk ("Unable to determine bay status\n");
+ spin_unlock_irqrestore(ap->lock, flags);
+ return;
+ }
+
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
ata_ehi_push_desc(ehi, "ACPI event");
- ata_ehi_hotplugged(ehi);
- ata_port_freeze(ap);
- break;
-
- case ACPI_NOTIFY_EJECT_REQUEST:
- ata_ehi_push_desc(ehi, "ACPI event");
- if (dev)
- dev->flags |= ATA_DFLAG_DETACH;
- else {
- struct ata_link *tlink;
- struct ata_device *tdev;
-
- ata_port_for_each_link(tlink, ap)
- ata_link_for_each_dev(tdev, tlink)
- tdev->flags |= ATA_DFLAG_DETACH;
+ if (!sta) {
+ /* Device has been unplugged */
+ if (dev)
+ dev->flags |= ATA_DFLAG_DETACH;
+ else {
+ struct ata_link *tlink;
+ struct ata_device *tdev;
+
+ ata_port_for_each_link(tlink, ap) {
+ ata_link_for_each_dev(tdev, tlink) {
+ tdev->flags |=
+ ATA_DFLAG_DETACH;
+ }
+ }
+ }
+ ata_port_schedule_eh(ap);
+ wait = 1;
+ } else {
+ ata_ehi_hotplugged(ehi);
+ ata_port_freeze(ap);
}
-
- ata_port_schedule_eh(ap);
- wait = 1;
- break;
}

+ spin_unlock_irqrestore(ap->lock, flags);
+
+ if (wait)
+ ata_port_wait_eh(ap);
+
if (dev) {
if (dev->sdev)
kobj = &dev->sdev->sdev_gendev.kobj;
@@ -170,11 +198,6 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
sprintf(event_string, "BAY_EVENT=%d", event);
kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
}
-
- spin_unlock_irqrestore(ap->lock, flags);
-
- if (wait)
- ata_port_wait_eh(ap);
}

static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 927b692..3c89f20 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -2126,6 +2126,13 @@ int ata_dev_configure(struct ata_device *dev)
dev->horkage |= ata_dev_blacklisted(dev);
ata_force_horkage(dev);

+ if (dev->horkage & ATA_HORKAGE_DISABLE) {
+ ata_dev_printk(dev, KERN_INFO,
+ "unsupported device, disabling\n");
+ ata_dev_disable(dev);
+ return 0;
+ }
+
/* let ACPI work its magic */
rc = ata_acpi_on_devcfg(dev);
if (rc)
@@ -3490,22 +3497,11 @@ int sata_link_resume(struct ata_link *link, const unsigned long *params,
if ((rc = sata_link_debounce(link, params, deadline)))
return rc;

- /* Clear SError. PMP and some host PHYs require this to
- * operate and clearing should be done before checking PHY
- * online status to avoid race condition (hotplugging between
- * link resume and status check).
- */
+ /* clear SError, some PHYs require this even for SRST to work */
if (!(rc = sata_scr_read(link, SCR_ERROR, &serror)))
rc = sata_scr_write(link, SCR_ERROR, serror);
- if (rc == 0 || rc == -EINVAL) {
- unsigned long flags;

- spin_lock_irqsave(link->ap->lock, flags);
- link->eh_info.serror = 0;
- spin_unlock_irqrestore(link->ap->lock, flags);
- rc = 0;
- }
- return rc;
+ return rc != -EINVAL ? rc : 0;
}

/**
@@ -3653,9 +3649,13 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
if (check_ready)
rc = ata_wait_ready(link, deadline, check_ready);
out:
- if (rc && rc != -EAGAIN)
+ if (rc && rc != -EAGAIN) {
+ /* online is set iff link is online && reset succeeded */
+ if (online)
+ *online = false;
ata_link_printk(link, KERN_ERR,
"COMRESET failed (errno=%d)\n", rc);
+ }
DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
@@ -3700,8 +3700,14 @@ int sata_std_hardreset(struct ata_link *link, unsigned int *class,
*/
void ata_std_postreset(struct ata_link *link, unsigned int *classes)
{
+ u32 serror;
+
DPRINTK("ENTER\n");

+ /* reset complete, clear SError */
+ if (!sata_scr_read(link, SCR_ERROR, &serror))
+ sata_scr_write(link, SCR_ERROR, serror);
+
/* print link status */
sata_print_link_status(link);

@@ -3894,8 +3900,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
{ "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA },
{ "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA },
/* Odd clown on sil3726/4726 PMPs */
- { "Config Disk", NULL, ATA_HORKAGE_NODMA |
- ATA_HORKAGE_SKIP_PM },
+ { "Config Disk", NULL, ATA_HORKAGE_DISABLE },

/* Weird ATAPI devices */
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 },
@@ -5616,7 +5621,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
spin_lock_irqsave(ap->lock, flags);

ehi->probe_mask |= ATA_ALL_DEVICES;
- ehi->action |= ATA_EH_RESET;
+ ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;

ap->pflags &= ~ATA_PFLAG_INITIALIZING;
@@ -5649,7 +5654,6 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
struct ata_port *ap = host->ports[i];

ata_scsi_scan_host(ap, 1);
- ata_lpm_schedule(ap, ap->pm_policy);
}

return 0;
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 62e0331..7894d83 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1308,12 +1308,7 @@ static void ata_eh_analyze_serror(struct ata_link *link)
unsigned int err_mask = 0, action = 0;
u32 hotplug_mask;

- if (serror & SERR_PERSISTENT) {
- err_mask |= AC_ERR_ATA_BUS;
- action |= ATA_EH_RESET;
- }
- if (serror &
- (SERR_DATA_RECOVERED | SERR_COMM_RECOVERED | SERR_DATA)) {
+ if (serror & (SERR_PERSISTENT | SERR_DATA)) {
err_mask |= AC_ERR_ATA_BUS;
action |= ATA_EH_RESET;
}
@@ -2047,19 +2042,11 @@ static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset,
unsigned int *classes, unsigned long deadline)
{
struct ata_device *dev;
- int rc;

ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_UNKNOWN;

- rc = reset(link, classes, deadline);
-
- /* convert all ATA_DEV_UNKNOWN to ATA_DEV_NONE */
- ata_link_for_each_dev(dev, link)
- if (classes[dev->devno] == ATA_DEV_UNKNOWN)
- classes[dev->devno] = ATA_DEV_NONE;
-
- return rc;
+ return reset(link, classes, deadline);
}

static int ata_eh_followup_srst_needed(struct ata_link *link,
@@ -2096,9 +2083,11 @@ int ata_eh_reset(struct ata_link *link, int classify,
ata_reset_fn_t reset;
unsigned long flags;
u32 sstatus;
- int rc;
+ int nr_known, rc;

- /* about to reset */
+ /*
+ * Prepare to reset
+ */
spin_lock_irqsave(ap->lock, flags);
ap->pflags |= ATA_PFLAG_RESETTING;
spin_unlock_irqrestore(ap->lock, flags);
@@ -2124,16 +2113,8 @@ int ata_eh_reset(struct ata_link *link, int classify,
ap->ops->set_piomode(ap, dev);
}

- if (!softreset && !hardreset) {
- if (verbose)
- ata_link_printk(link, KERN_INFO, "no reset method "
- "available, skipping reset\n");
- if (!(lflags & ATA_LFLAG_ASSUME_CLASS))
- lflags |= ATA_LFLAG_ASSUME_ATA;
- goto done;
- }
-
/* prefer hardreset */
+ reset = NULL;
ehc->i.action &= ~ATA_EH_RESET;
if (hardreset) {
reset = hardreset;
@@ -2141,11 +2122,6 @@ int ata_eh_reset(struct ata_link *link, int classify,
} else if (softreset) {
reset = softreset;
ehc->i.action = ATA_EH_SOFTRESET;
- } else {
- ata_link_printk(link, KERN_ERR, "BUG: no reset method, "
- "please report to linux-ide@vger.kernel.org\n");
- dump_stack();
- return -EINVAL;
}

if (prereset) {
@@ -2165,55 +2141,71 @@ int ata_eh_reset(struct ata_link *link, int classify,
"prereset failed (errno=%d)\n", rc);
goto out;
}
- }

- /* prereset() might have cleared ATA_EH_RESET */
- if (!(ehc->i.action & ATA_EH_RESET)) {
- /* prereset told us not to reset, bang classes and return */
- ata_link_for_each_dev(dev, link)
- classes[dev->devno] = ATA_DEV_NONE;
- rc = 0;
- goto out;
+ /* prereset() might have cleared ATA_EH_RESET. If so,
+ * bang classes and return.
+ */
+ if (reset && !(ehc->i.action & ATA_EH_RESET)) {
+ ata_link_for_each_dev(dev, link)
+ classes[dev->devno] = ATA_DEV_NONE;
+ rc = 0;
+ goto out;
+ }
}

retry:
+ /*
+ * Perform reset
+ */
+ if (ata_is_host_link(link))
+ ata_eh_freeze_port(ap);
+
deadline = jiffies + ata_eh_reset_timeouts[try++];

- /* shut up during boot probing */
- if (verbose)
- ata_link_printk(link, KERN_INFO, "%s resetting link\n",
- reset == softreset ? "soft" : "hard");
+ if (reset) {
+ if (verbose)
+ ata_link_printk(link, KERN_INFO, "%s resetting link\n",
+ reset == softreset ? "soft" : "hard");

- /* mark that this EH session started with reset */
- if (reset == hardreset)
- ehc->i.flags |= ATA_EHI_DID_HARDRESET;
- else
- ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
+ /* mark that this EH session started with reset */
+ if (reset == hardreset)
+ ehc->i.flags |= ATA_EHI_DID_HARDRESET;
+ else
+ ehc->i.flags |= ATA_EHI_DID_SOFTRESET;

- rc = ata_do_reset(link, reset, classes, deadline);
+ rc = ata_do_reset(link, reset, classes, deadline);

- if (reset == hardreset &&
- ata_eh_followup_srst_needed(link, rc, classify, classes)) {
- /* okay, let's do follow-up softreset */
- reset = softreset;
+ if (reset == hardreset &&
+ ata_eh_followup_srst_needed(link, rc, classify, classes)) {
+ /* okay, let's do follow-up softreset */
+ reset = softreset;

- if (!reset) {
- ata_link_printk(link, KERN_ERR,
- "follow-up softreset required "
- "but no softreset avaliable\n");
- rc = -EINVAL;
- goto fail;
+ if (!reset) {
+ ata_link_printk(link, KERN_ERR,
+ "follow-up softreset required "
+ "but no softreset avaliable\n");
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
+ rc = ata_do_reset(link, reset, classes, deadline);
}

- ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
- rc = ata_do_reset(link, reset, classes, deadline);
+ /* -EAGAIN can happen if we skipped followup SRST */
+ if (rc && rc != -EAGAIN)
+ goto fail;
+ } else {
+ if (verbose)
+ ata_link_printk(link, KERN_INFO, "no reset method "
+ "available, skipping reset\n");
+ if (!(lflags & ATA_LFLAG_ASSUME_CLASS))
+ lflags |= ATA_LFLAG_ASSUME_ATA;
}

- /* -EAGAIN can happen if we skipped followup SRST */
- if (rc && rc != -EAGAIN)
- goto fail;
-
- done:
+ /*
+ * Post-reset processing
+ */
ata_link_for_each_dev(dev, link) {
/* After the reset, the device state is PIO 0 and the
* controller state is undefined. Reset also wakes up
@@ -2236,9 +2228,53 @@ int ata_eh_reset(struct ata_link *link, int classify,
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0)
link->sata_spd = (sstatus >> 4) & 0xf;

+ /* thaw the port */
+ if (ata_is_host_link(link))
+ ata_eh_thaw_port(ap);
+
+ /* postreset() should clear hardware SError. Although SError
+ * is cleared during link resume, clearing SError here is
+ * necessary as some PHYs raise hotplug events after SRST.
+ * This introduces race condition where hotplug occurs between
+ * reset and here. This race is mediated by cross checking
+ * link onlineness and classification result later.
+ */
if (postreset)
postreset(link, classes);

+ /* clear cached SError */
+ spin_lock_irqsave(link->ap->lock, flags);
+ link->eh_info.serror = 0;
+ spin_unlock_irqrestore(link->ap->lock, flags);
+
+ /* Make sure onlineness and classification result correspond.
+ * Hotplug could have happened during reset and some
+ * controllers fail to wait while a drive is spinning up after
+ * being hotplugged causing misdetection. By cross checking
+ * link onlineness and classification result, those conditions
+ * can be reliably detected and retried.
+ */
+ nr_known = 0;
+ ata_link_for_each_dev(dev, link) {
+ /* convert all ATA_DEV_UNKNOWN to ATA_DEV_NONE */
+ if (classes[dev->devno] == ATA_DEV_UNKNOWN)
+ classes[dev->devno] = ATA_DEV_NONE;
+ else
+ nr_known++;
+ }
+
+ if (classify && !nr_known && ata_link_online(link)) {
+ if (try < max_tries) {
+ ata_link_printk(link, KERN_WARNING, "link online but "
+ "device misclassified, retrying\n");
+ rc = -EAGAIN;
+ goto fail;
+ }
+ ata_link_printk(link, KERN_WARNING,
+ "link online but device misclassified, "
+ "device detection might fail\n");
+ }
+
/* reset successful, schedule revalidation */
ata_eh_done(link, NULL, ATA_EH_RESET);
ehc->i.action |= ATA_EH_REVALIDATE;
@@ -2587,7 +2623,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
struct ata_link *link;
struct ata_device *dev;
int nr_failed_devs, nr_disabled_devs;
- int reset, rc;
+ int rc;
unsigned long flags;

DPRINTK("ENTER\n");
@@ -2630,7 +2666,6 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
rc = 0;
nr_failed_devs = 0;
nr_disabled_devs = 0;
- reset = 0;

/* if UNLOADING, finish immediately */
if (ap->pflags & ATA_PFLAG_UNLOADING)
@@ -2644,40 +2679,24 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
if (ata_eh_skip_recovery(link))
ehc->i.action = 0;

- /* do we need to reset? */
- if (ehc->i.action & ATA_EH_RESET)
- reset = 1;
-
ata_link_for_each_dev(dev, link)
ehc->classes[dev->devno] = ATA_DEV_UNKNOWN;
}

/* reset */
- if (reset) {
- /* if PMP is attached, this function only deals with
- * downstream links, port should stay thawed.
- */
- if (!sata_pmp_attached(ap))
- ata_eh_freeze_port(ap);
-
- ata_port_for_each_link(link, ap) {
- struct ata_eh_context *ehc = &link->eh_context;
+ ata_port_for_each_link(link, ap) {
+ struct ata_eh_context *ehc = &link->eh_context;

- if (!(ehc->i.action & ATA_EH_RESET))
- continue;
+ if (!(ehc->i.action & ATA_EH_RESET))
+ continue;

- rc = ata_eh_reset(link, ata_link_nr_vacant(link),
- prereset, softreset, hardreset,
- postreset);
- if (rc) {
- ata_link_printk(link, KERN_ERR,
- "reset failed, giving up\n");
- goto out;
- }
+ rc = ata_eh_reset(link, ata_link_nr_vacant(link),
+ prereset, softreset, hardreset, postreset);
+ if (rc) {
+ ata_link_printk(link, KERN_ERR,
+ "reset failed, giving up\n");
+ goto out;
}
-
- if (!sata_pmp_attached(ap))
- ata_eh_thaw_port(ap);
}

/* the rest */
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index ff1822a..0f9386d 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -48,7 +48,7 @@ static unsigned int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
tf.device = link->pmp;

err_mask = ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
- SATA_PMP_SCR_TIMEOUT);
+ SATA_PMP_RW_TIMEOUT);
if (err_mask)
return err_mask;

@@ -88,7 +88,7 @@ static unsigned int sata_pmp_write(struct ata_link *link, int reg, u32 val)
tf.lbah = (val >> 24) & 0xff;

return ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
- SATA_PMP_SCR_TIMEOUT);
+ SATA_PMP_RW_TIMEOUT);
}

/**
@@ -257,19 +257,6 @@ static int sata_pmp_configure(struct ata_device *dev, int print_info)
goto fail;
}

- /* turn off notification till fan-out ports are reset and configured */
- if (gscr[SATA_PMP_GSCR_FEAT_EN] & SATA_PMP_FEAT_NOTIFY) {
- gscr[SATA_PMP_GSCR_FEAT_EN] &= ~SATA_PMP_FEAT_NOTIFY;
-
- err_mask = sata_pmp_write(dev->link, SATA_PMP_GSCR_FEAT_EN,
- gscr[SATA_PMP_GSCR_FEAT_EN]);
- if (err_mask) {
- rc = -EIO;
- reason = "failed to write GSCR_FEAT_EN";
- goto fail;
- }
- }
-
if (print_info) {
ata_dev_printk(dev, KERN_INFO, "Port Multiplier %s, "
"0x%04x:0x%04x r%d, %d ports, feat 0x%x/0x%x\n",
@@ -700,8 +687,6 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
if (ehc->i.action & ATA_EH_RESET) {
struct ata_link *tlink;

- ata_eh_freeze_port(ap);
-
/* reset */
rc = ata_eh_reset(link, 0, prereset, softreset, hardreset,
postreset);
@@ -711,8 +696,6 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap,
goto fail;
}

- ata_eh_thaw_port(ap);
-
/* PMP is reset, SErrors cannot be trusted, scan all */
ata_port_for_each_link(tlink, ap) {
struct ata_eh_context *ehc = &tlink->eh_context;
@@ -864,6 +847,7 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
struct ata_link *pmp_link = &ap->link;
struct ata_device *pmp_dev = pmp_link->device;
struct ata_eh_context *pmp_ehc = &pmp_link->eh_context;
+ u32 *gscr = pmp_dev->gscr;
struct ata_link *link;
struct ata_device *dev;
unsigned int err_mask;
@@ -901,6 +885,22 @@ static int sata_pmp_eh_recover(struct ata_port *ap)
if (rc)
goto pmp_fail;

+ /* PHY event notification can disturb reset and other recovery
+ * operations. Turn it off.
+ */
+ if (gscr[SATA_PMP_GSCR_FEAT_EN] & SATA_PMP_FEAT_NOTIFY) {
+ gscr[SATA_PMP_GSCR_FEAT_EN] &= ~SATA_PMP_FEAT_NOTIFY;
+
+ err_mask = sata_pmp_write(pmp_link, SATA_PMP_GSCR_FEAT_EN,
+ gscr[SATA_PMP_GSCR_FEAT_EN]);
+ if (err_mask) {
+ ata_link_printk(pmp_link, KERN_WARNING,
+ "failed to disable NOTIFY (err_mask=0x%x)\n",
+ err_mask);
+ goto pmp_fail;
+ }
+ }
+
/* handle disabled links */
rc = sata_pmp_eh_handle_disabled_links(ap);
if (rc)
@@ -923,10 +923,10 @@ static int sata_pmp_eh_recover(struct ata_port *ap)

/* enable notification */
if (pmp_dev->flags & ATA_DFLAG_AN) {
- pmp_dev->gscr[SATA_PMP_GSCR_FEAT_EN] |= SATA_PMP_FEAT_NOTIFY;
+ gscr[SATA_PMP_GSCR_FEAT_EN] |= SATA_PMP_FEAT_NOTIFY;

- err_mask = sata_pmp_write(pmp_dev->link, SATA_PMP_GSCR_FEAT_EN,
- pmp_dev->gscr[SATA_PMP_GSCR_FEAT_EN]);
+ err_mask = sata_pmp_write(pmp_link, SATA_PMP_GSCR_FEAT_EN,
+ gscr[SATA_PMP_GSCR_FEAT_EN]);
if (err_mask) {
ata_dev_printk(pmp_dev, KERN_ERR, "failed to write "
"PMP_FEAT_EN (Emask=0x%x)\n", err_mask);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 3ce4392..aeb6e01 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1082,12 +1082,6 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
if (((cdb[4] >> 4) & 0xf) != 0)
goto invalid_fld; /* power conditions not supported */

- if (qc->dev->horkage & ATA_HORKAGE_SKIP_PM) {
- /* the device lacks PM support, finish without doing anything */
- scmd->result = SAM_STAT_GOOD;
- return 1;
- }
-
if (cdb[4] & 0x1) {
tf->nsect = 1; /* 1 sector, lba=0 */

diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index fcabe46..0f3e659 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -177,11 +177,11 @@ static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, stru
u8 udma;

if (t != NULL) {
- t->setup = FIT(t->setup, 1, 8) & 7;
- t->act8b = FIT(t->act8b, 1, 8) & 7;
- t->rec8b = FIT(t->rec8b, 1, 16) & 15;
- t->active = FIT(t->active, 1, 8) & 7;
- t->recover = FIT(t->recover, 1, 16) & 15;
+ t->setup = clamp_val(t->setup, 1, 8) & 7;
+ t->act8b = clamp_val(t->act8b, 1, 8) & 7;
+ t->rec8b = clamp_val(t->rec8b, 1, 16) & 15;
+ t->active = clamp_val(t->active, 1, 8) & 7;
+ t->recover = clamp_val(t->recover, 1, 16) & 15;

pci_write_config_byte(pdev, cas, t->setup);
pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b);
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index 26665c3..57dd00f 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -84,32 +84,32 @@ static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offse

/* Configure the address set up timing */
pci_read_config_byte(pdev, offset + 0x0C, &t);
- t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
+ t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
pci_write_config_byte(pdev, offset + 0x0C , t);

/* Configure the 8bit I/O timing */
pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
- ((FIT(at.act8b, 1, 16) - 1) << 4) | (FIT(at.rec8b, 1, 16) - 1));
+ ((clamp_val(at.act8b, 1, 16) - 1) << 4) | (clamp_val(at.rec8b, 1, 16) - 1));

/* Drive timing */
pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
- ((FIT(at.active, 1, 16) - 1) << 4) | (FIT(at.recover, 1, 16) - 1));
+ ((clamp_val(at.active, 1, 16) - 1) << 4) | (clamp_val(at.recover, 1, 16) - 1));

switch (clock) {
case 1:
- t = at.udma ? (0xc0 | (FIT(at.udma, 2, 5) - 2)) : 0x03;
+ t = at.udma ? (0xc0 | (clamp_val(at.udma, 2, 5) - 2)) : 0x03;
break;

case 2:
- t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 2, 10)]) : 0x03;
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 2, 10)]) : 0x03;
break;

case 3:
- t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 10)]) : 0x03;
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 10)]) : 0x03;
break;

case 4:
- t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 15)]) : 0x03;
+ t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 15)]) : 0x03;
break;

default:
diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c
index 5e10438..82fb6e2 100644
--- a/drivers/ata/pata_at32.c
+++ b/drivers/ata/pata_at32.c
@@ -291,8 +291,6 @@ static int __init pata_at32_probe(struct platform_device *pdev)
if (!info)
return -ENOMEM;

- memset(info, 0, sizeof(struct at32_ide_info));
-
info->irq = irq;
info->cs = board->cs;

diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c
index 9ab8973..5551610 100644
--- a/drivers/ata/pata_bf54x.c
+++ b/drivers/ata/pata_bf54x.c
@@ -911,7 +911,10 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc)
/* Reset all transfer count */
ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST);

- /* Set transfer length to buffer len */
+ /* Set ATAPI state machine contorl in terminate sequence */
+ ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | END_ON_TERM);
+
+ /* Set transfer length to buffer len */
for_each_sg(qc->sg, sg, qc->n_elem, si) {
ATAPI_SET_XFER_LEN(base, (sg_dma_len(sg) >> 1));
}
diff --git a/drivers/ata/pata_cypress.c b/drivers/ata/pata_cypress.c
index a9c3218..2ff6260 100644
--- a/drivers/ata/pata_cypress.c
+++ b/drivers/ata/pata_cypress.c
@@ -62,14 +62,14 @@ static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev)
return;
}

- time_16 = FIT(t.recover, 0, 15) | (FIT(t.active, 0, 15) << 4);
- time_8 = FIT(t.act8b, 0, 15) | (FIT(t.rec8b, 0, 15) << 4);
+ time_16 = clamp_val(t.recover, 0, 15) | (clamp_val(t.active, 0, 15) << 4);
+ time_8 = clamp_val(t.act8b, 0, 15) | (clamp_val(t.rec8b, 0, 15) << 4);

if (adev->devno == 0) {
pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);

addr &= ~0x0F; /* Mask bits */
- addr |= FIT(t.setup, 0, 15);
+ addr |= clamp_val(t.setup, 0, 15);

pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
pci_write_config_byte(pdev, CY82_IDE_MASTER_IOR, time_16);
@@ -79,7 +79,7 @@ static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev)
pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);

addr &= ~0xF0; /* Mask bits */
- addr |= (FIT(t.setup, 0, 15) << 4);
+ addr |= (clamp_val(t.setup, 0, 15) << 4);

pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
pci_write_config_byte(pdev, CY82_IDE_SLAVE_IOR, time_16);
diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 7af4b29..fe7cc8e 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -343,8 +343,8 @@ static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
/* Get the timing data in cycles. For now play safe at 50Mhz */
ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);

- active = FIT(t.active, 2, 15);
- recover = FIT(t.recover, 4, 15);
+ active = clamp_val(t.active, 2, 15);
+ recover = clamp_val(t.recover, 4, 15);

inb(0x3E6);
inb(0x3E6);
@@ -377,8 +377,8 @@ static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
/* Get the timing data in cycles. For now play safe at 50Mhz */
ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);

- active = FIT(t.active, 2, 15);
- recover = FIT(t.recover, 2, 16);
+ active = clamp_val(t.active, 2, 15);
+ recover = clamp_val(t.recover, 2, 16);
recover &= 0x15;

inb(0x3E6);
@@ -462,9 +462,9 @@ static void opti82c611a_set_piomode(struct ata_port *ap,
ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
}

- active = FIT(t.active, 2, 17) - 2;
- recover = FIT(t.recover, 1, 16) - 1;
- setup = FIT(t.setup, 1, 4) - 1;
+ active = clamp_val(t.active, 2, 17) - 2;
+ recover = clamp_val(t.recover, 1, 16) - 1;
+ setup = clamp_val(t.setup, 1, 4) - 1;

/* Select the right timing bank for write timing */
rc = ioread8(ap->ioaddr.lbal_addr);
@@ -541,9 +541,9 @@ static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP);
}

- active = FIT(t.active, 2, 17) - 2;
- recover = FIT(t.recover, 1, 16) - 1;
- setup = FIT(t.setup, 1, 4) - 1;
+ active = clamp_val(t.active, 2, 17) - 2;
+ recover = clamp_val(t.recover, 1, 16) - 1;
+ setup = clamp_val(t.setup, 1, 4) - 1;

/* Select the right timing bank for write timing */
rc = ioread8(ap->ioaddr.lbal_addr);
@@ -624,11 +624,11 @@ static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

if (ld_qdi->fast) {
- active = 8 - FIT(t.active, 1, 8);
- recovery = 18 - FIT(t.recover, 3, 18);
+ active = 8 - clamp_val(t.active, 1, 8);
+ recovery = 18 - clamp_val(t.recover, 3, 18);
} else {
- active = 9 - FIT(t.active, 2, 9);
- recovery = 15 - FIT(t.recover, 0, 15);
+ active = 9 - clamp_val(t.active, 2, 9);
+ recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;

@@ -658,11 +658,11 @@ static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

if (ld_qdi->fast) {
- active = 8 - FIT(t.active, 1, 8);
- recovery = 18 - FIT(t.recover, 3, 18);
+ active = 8 - clamp_val(t.active, 1, 8);
+ recovery = 18 - clamp_val(t.recover, 3, 18);
} else {
- active = 9 - FIT(t.active, 2, 9);
- recovery = 15 - FIT(t.recover, 0, 15);
+ active = 9 - clamp_val(t.active, 2, 9);
+ recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;

@@ -695,11 +695,11 @@ static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

if (ld_qdi->fast) {
- active = 8 - FIT(t.active, 1, 8);
- recovery = 18 - FIT(t.recover, 3, 18);
+ active = 8 - clamp_val(t.active, 1, 8);
+ recovery = 18 - clamp_val(t.recover, 3, 18);
} else {
- active = 9 - FIT(t.active, 2, 9);
- recovery = 15 - FIT(t.recover, 0, 15);
+ active = 9 - clamp_val(t.active, 2, 9);
+ recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;
ld_qdi->clock[adev->devno] = timing;
@@ -830,8 +830,8 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
else
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

- active = (FIT(t.active, 3, 17) - 1) & 0x0F;
- recovery = (FIT(t.recover, 1, 15) + 1) & 0x0F;
+ active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
+ recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
timing = (active << 4) | recovery;
winbond_writecfg(ld_winbond->timing, timing, reg);

@@ -842,7 +842,7 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
reg |= 0x08; /* FIFO off */
if (!ata_pio_need_iordy(adev))
reg |= 0x02; /* IORDY off */
- reg |= (FIT(t.setup, 0, 3) << 6);
+ reg |= (clamp_val(t.setup, 0, 3) << 6);
winbond_writecfg(ld_winbond->timing, timing + 1, reg);
}

diff --git a/drivers/ata/pata_ns87410.c b/drivers/ata/pata_ns87410.c
index 76d2455..be756b7 100644
--- a/drivers/ata/pata_ns87410.c
+++ b/drivers/ata/pata_ns87410.c
@@ -91,9 +91,9 @@ static void ns87410_set_piomode(struct ata_port *ap, struct ata_device *adev)
return;
}

- at.active = FIT(at.active, 2, 16) - 2;
- at.setup = FIT(at.setup, 1, 4) - 1;
- at.recover = FIT(at.recover, 1, 12) - 1;
+ at.active = clamp_val(at.active, 2, 16) - 2;
+ at.setup = clamp_val(at.setup, 1, 4) - 1;
+ at.recover = clamp_val(at.recover, 1, 12) - 1;

idetcr = (at.setup << 6) | (recoverbits[at.recover] << 3) | activebits[at.active];

diff --git a/drivers/ata/pata_ns87415.c b/drivers/ata/pata_ns87415.c
index ae92b00..e0aa7ea 100644
--- a/drivers/ata/pata_ns87415.c
+++ b/drivers/ata/pata_ns87415.c
@@ -66,8 +66,8 @@ static void ns87415_set_mode(struct ata_port *ap, struct ata_device *adev, u8 mo

ata_timing_compute(adev, adev->pio_mode, &t, T, 0);

- clocking = 17 - FIT(t.active, 2, 17);
- clocking |= (16 - FIT(t.recover, 1, 16)) << 4;
+ clocking = 17 - clamp_val(t.active, 2, 17);
+ clocking |= (16 - clamp_val(t.recover, 1, 16)) << 4;
/* Use the same timing for read and write bytes */
clocking |= (clocking << 8);
pci_write_config_word(dev, timing, clocking);
diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c
index bf45cf0..97e5b09 100644
--- a/drivers/ata/pata_qdi.c
+++ b/drivers/ata/pata_qdi.c
@@ -60,11 +60,11 @@ static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

if (qdi->fast) {
- active = 8 - FIT(t.active, 1, 8);
- recovery = 18 - FIT(t.recover, 3, 18);
+ active = 8 - clamp_val(t.active, 1, 8);
+ recovery = 18 - clamp_val(t.recover, 3, 18);
} else {
- active = 9 - FIT(t.active, 2, 9);
- recovery = 15 - FIT(t.recover, 0, 15);
+ active = 9 - clamp_val(t.active, 2, 9);
+ recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;

@@ -84,11 +84,11 @@ static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

if (qdi->fast) {
- active = 8 - FIT(t.active, 1, 8);
- recovery = 18 - FIT(t.recover, 3, 18);
+ active = 8 - clamp_val(t.active, 1, 8);
+ recovery = 18 - clamp_val(t.recover, 3, 18);
} else {
- active = 9 - FIT(t.active, 2, 9);
- recovery = 15 - FIT(t.recover, 0, 15);
+ active = 9 - clamp_val(t.active, 2, 9);
+ recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;

diff --git a/drivers/ata/pata_sl82c105.c b/drivers/ata/pata_sl82c105.c
index 70d94fb..69877bd 100644
--- a/drivers/ata/pata_sl82c105.c
+++ b/drivers/ata/pata_sl82c105.c
@@ -216,7 +216,7 @@ static int sl82c105_qc_defer(struct ata_queued_cmd *qc)
struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];
int rc;

- /* First apply the usual rules */
+ /* First apply the usual rules */
rc = ata_std_qc_defer(qc);
if (rc != 0)
return rc;
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index 2fea6cb..708ed14 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -259,15 +259,15 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo

pci_read_config_byte(pdev, 0x4C, &setup);
setup &= ~(3 << shift);
- setup |= FIT(t.setup, 1, 4) << shift; /* 1,4 or 1,4 - 1 FIXME */
+ setup |= clamp_val(t.setup, 1, 4) << shift; /* 1,4 or 1,4 - 1 FIXME */
pci_write_config_byte(pdev, 0x4C, setup);
}

/* Load the PIO mode bits */
pci_write_config_byte(pdev, 0x4F - ap->port_no,
- ((FIT(t.act8b, 1, 16) - 1) << 4) | (FIT(t.rec8b, 1, 16) - 1));
+ ((clamp_val(t.act8b, 1, 16) - 1) << 4) | (clamp_val(t.rec8b, 1, 16) - 1));
pci_write_config_byte(pdev, 0x48 + offset,
- ((FIT(t.active, 1, 16) - 1) << 4) | (FIT(t.recover, 1, 16) - 1));
+ ((clamp_val(t.active, 1, 16) - 1) << 4) | (clamp_val(t.recover, 1, 16) - 1));

/* Load the UDMA bits according to type */
switch(udma_type) {
@@ -275,16 +275,16 @@ static void via_do_set_mode(struct ata_port *ap, struct ata_device *adev, int mo
/* BUG() ? */
/* fall through */
case 33:
- ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 5) - 2)) : 0x03;
+ ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 5) - 2)) : 0x03;
break;
case 66:
- ut = t.udma ? (0xe8 | (FIT(t.udma, 2, 9) - 2)) : 0x0f;
+ ut = t.udma ? (0xe8 | (clamp_val(t.udma, 2, 9) - 2)) : 0x0f;
break;
case 100:
- ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07;
+ ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07;
break;
case 133:
- ut = t.udma ? (0xe0 | (FIT(t.udma, 2, 9) - 2)) : 0x07;
+ ut = t.udma ? (0xe0 | (clamp_val(t.udma, 2, 9) - 2)) : 0x07;
break;
}

diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
index 6e52a35..474528f 100644
--- a/drivers/ata/pata_winbond.c
+++ b/drivers/ata/pata_winbond.c
@@ -75,8 +75,8 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
else
ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);

- active = (FIT(t.active, 3, 17) - 1) & 0x0F;
- recovery = (FIT(t.recover, 1, 15) + 1) & 0x0F;
+ active = (clamp_val(t.active, 3, 17) - 1) & 0x0F;
+ recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F;
timing = (active << 4) | recovery;
winbond_writecfg(winbond->config, timing, reg);

@@ -87,7 +87,7 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
reg |= 0x08; /* FIFO off */
if (!ata_pio_need_iordy(adev))
reg |= 0x02; /* IORDY off */
- reg |= (FIT(t.setup, 0, 3) << 6);
+ reg |= (clamp_val(t.setup, 0, 3) << 6);
winbond_writecfg(winbond->config, timing + 1, reg);
}

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index bb73b22..fb81f0c 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -72,7 +72,7 @@
#include <linux/libata.h>

#define DRV_NAME "sata_mv"
-#define DRV_VERSION "1.20"
+#define DRV_VERSION "1.21"

enum {
/* BAR's are enumerated in terms of pci_resource_start() terms */
@@ -128,8 +128,13 @@ enum {
MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI |
ATA_FLAG_PIO_POLLING,
+
MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,

+ MV_GENIIE_FLAGS = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
+ ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
+ ATA_FLAG_NCQ | ATA_FLAG_AN,
+
CRQB_FLAG_READ = (1 << 0),
CRQB_TAG_SHIFT = 1,
CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */
@@ -197,13 +202,6 @@ enum {
HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
- HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
- PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
- PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
- HC_MAIN_RSVD),
- HC_MAIN_MASKED_IRQS_5 = (PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
- HC_MAIN_RSVD_5),
- HC_MAIN_MASKED_IRQS_SOC = (PORTS_0_3_COAL_DONE | HC_MAIN_RSVD_SOC),

/* SATAHC registers */
HC_CFG_OFS = 0,
@@ -221,6 +219,7 @@ enum {
SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
SATA_ACTIVE_OFS = 0x350,
SATA_FIS_IRQ_CAUSE_OFS = 0x364,
+ SATA_FIS_IRQ_AN = (1 << 9), /* async notification */

LTMODE_OFS = 0x30c,
LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
@@ -459,6 +458,7 @@ struct mv_port_signal {

struct mv_host_priv {
u32 hp_flags;
+ u32 main_irq_mask;
struct mv_port_signal signal[8];
const struct mv_hw_ops *ops;
int n_ports;
@@ -640,25 +640,19 @@ static const struct ata_port_info mv_port_info[] = {
.port_ops = &mv6_ops,
},
{ /* chip_6042 */
- .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
- ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
- ATA_FLAG_NCQ,
+ .flags = MV_GENIIE_FLAGS,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
},
{ /* chip_7042 */
- .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
- ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
- ATA_FLAG_NCQ,
+ .flags = MV_GENIIE_FLAGS,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
},
{ /* chip_soc */
- .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
- ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
- ATA_FLAG_NCQ | MV_FLAG_SOC,
+ .flags = MV_GENIIE_FLAGS | MV_FLAG_SOC,
.pio_mask = 0x1f, /* pio0-4 */
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
@@ -844,6 +838,33 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
}

+static void mv_set_main_irq_mask(struct ata_host *host,
+ u32 disable_bits, u32 enable_bits)
+{
+ struct mv_host_priv *hpriv = host->private_data;
+ u32 old_mask, new_mask;
+
+ old_mask = hpriv->main_irq_mask;
+ new_mask = (old_mask & ~disable_bits) | enable_bits;
+ if (new_mask != old_mask) {
+ hpriv->main_irq_mask = new_mask;
+ writelfl(new_mask, hpriv->main_irq_mask_addr);
+ }
+}
+
+static void mv_enable_port_irqs(struct ata_port *ap,
+ unsigned int port_bits)
+{
+ unsigned int shift, hardport, port = ap->port_no;
+ u32 disable_bits, enable_bits;
+
+ MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
+
+ disable_bits = (DONE_IRQ | ERR_IRQ) << shift;
+ enable_bits = port_bits << shift;
+ mv_set_main_irq_mask(ap->host, disable_bits, enable_bits);
+}
+
/**
* mv_start_dma - Enable eDMA engine
* @base: port base address
@@ -886,9 +907,11 @@ static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
mv_edma_cfg(ap, want_ncq);

/* clear FIS IRQ Cause */
- writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
+ if (IS_GEN_IIE(hpriv))
+ writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);

mv_set_edma_ptrs(port_mmio, hpriv, pp);
+ mv_enable_port_irqs(ap, DONE_IRQ|ERR_IRQ);

writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS);
pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
@@ -1341,6 +1364,7 @@ out_port_free_dma_mem:
static void mv_port_stop(struct ata_port *ap)
{
mv_stop_edma(ap);
+ mv_enable_port_irqs(ap, 0);
mv_port_free_dma_mem(ap);
}

@@ -1582,6 +1606,7 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
* shadow block, etc registers.
*/
mv_stop_edma(ap);
+ mv_enable_port_irqs(ap, ERR_IRQ);
mv_pmp_select(ap, qc->dev->link->pmp);
return ata_sff_qc_issue(qc);
}
@@ -1670,6 +1695,18 @@ static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
}
}

+static int mv_req_q_empty(struct ata_port *ap)
+{
+ void __iomem *port_mmio = mv_ap_base(ap);
+ u32 in_ptr, out_ptr;
+
+ in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS)
+ >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+ out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
+ >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+ return (in_ptr == out_ptr); /* 1 == queue_is_empty */
+}
+
static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
{
struct mv_port_priv *pp = ap->private_data;
@@ -1703,7 +1740,7 @@ static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
ap->qc_active, failed_links,
ap->nr_active_links);

- if (ap->nr_active_links <= failed_links) {
+ if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) {
mv_process_crpb_entries(ap, pp);
mv_stop_edma(ap);
mv_eh_freeze(ap);
@@ -1812,6 +1849,7 @@ static void mv_err_intr(struct ata_port *ap)
{
void __iomem *port_mmio = mv_ap_base(ap);
u32 edma_err_cause, eh_freeze_mask, serr = 0;
+ u32 fis_cause = 0;
struct mv_port_priv *pp = ap->private_data;
struct mv_host_priv *hpriv = ap->host->private_data;
unsigned int action = 0, err_mask = 0;
@@ -1821,16 +1859,19 @@ static void mv_err_intr(struct ata_port *ap)

/*
* Read and clear the SError and err_cause bits.
+ * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
+ * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
*/
sata_scr_read(&ap->link, SCR_ERROR, &serr);
sata_scr_write_flush(&ap->link, SCR_ERROR, serr);

edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
+ fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
+ writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
+ }
writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);

- ata_port_printk(ap, KERN_INFO, "%s: err_cause=%08x pp_flags=0x%x\n",
- __func__, edma_err_cause, pp->pp_flags);
-
if (edma_err_cause & EDMA_ERR_DEV) {
/*
* Device errors during FIS-based switching operation
@@ -1844,6 +1885,18 @@ static void mv_err_intr(struct ata_port *ap)
ata_ehi_clear_desc(ehi);
ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x",
edma_err_cause, pp->pp_flags);
+
+ if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
+ ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
+ if (fis_cause & SATA_FIS_IRQ_AN) {
+ u32 ec = edma_err_cause &
+ ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
+ sata_async_notification(ap);
+ if (!ec)
+ return; /* Just an AN; no need for the nukes */
+ ata_ehi_push_desc(ehi, "SDB notify");
+ }
+ }
/*
* All generations share these EDMA error cause bits:
*/
@@ -2162,20 +2215,20 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance)
struct ata_host *host = dev_instance;
struct mv_host_priv *hpriv = host->private_data;
unsigned int handled = 0;
- u32 main_irq_cause, main_irq_mask;
+ u32 main_irq_cause, pending_irqs;

spin_lock(&host->lock);
main_irq_cause = readl(hpriv->main_irq_cause_addr);
- main_irq_mask = readl(hpriv->main_irq_mask_addr);
+ pending_irqs = main_irq_cause & hpriv->main_irq_mask;
/*
* Deal with cases where we either have nothing pending, or have read
* a bogus register value which can indicate HW removal or PCI fault.
*/
- if ((main_irq_cause & main_irq_mask) && (main_irq_cause != 0xffffffffU)) {
- if (unlikely((main_irq_cause & PCI_ERR) && HAS_PCI(host)))
+ if (pending_irqs && main_irq_cause != 0xffffffffU) {
+ if (unlikely((pending_irqs & PCI_ERR) && HAS_PCI(host)))
handled = mv_pci_error(host, hpriv->base);
else
- handled = mv_host_intr(host, main_irq_cause);
+ handled = mv_host_intr(host, pending_irqs);
}
spin_unlock(&host->lock);
return IRQ_RETVAL(handled);
@@ -2373,7 +2426,6 @@ static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
ZERO(MV_PCI_DISC_TIMER);
ZERO(MV_PCI_MSI_TRIGGER);
writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS);
- ZERO(PCI_HC_MAIN_IRQ_MASK_OFS);
ZERO(MV_PCI_SERR_MASK);
ZERO(hpriv->irq_cause_ofs);
ZERO(hpriv->irq_mask_ofs);
@@ -2728,6 +2780,7 @@ static int mv_hardreset(struct ata_link *link, unsigned int *class,

rc = sata_link_hardreset(link, timing, deadline + extra,
&online, NULL);
+ rc = online ? -EAGAIN : rc;
if (rc)
return rc;
sata_scr_read(link, SCR_STATUS, &sstatus);
@@ -2744,32 +2797,18 @@ static int mv_hardreset(struct ata_link *link, unsigned int *class,

static void mv_eh_freeze(struct ata_port *ap)
{
- struct mv_host_priv *hpriv = ap->host->private_data;
- unsigned int shift, hardport, port = ap->port_no;
- u32 main_irq_mask;
-
- /* FIXME: handle coalescing completion events properly */
-
mv_stop_edma(ap);
- MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
-
- /* disable assertion of portN err, done events */
- main_irq_mask = readl(hpriv->main_irq_mask_addr);
- main_irq_mask &= ~((DONE_IRQ | ERR_IRQ) << shift);
- writelfl(main_irq_mask, hpriv->main_irq_mask_addr);
+ mv_enable_port_irqs(ap, 0);
}

static void mv_eh_thaw(struct ata_port *ap)
{
struct mv_host_priv *hpriv = ap->host->private_data;
- unsigned int shift, hardport, port = ap->port_no;
+ unsigned int port = ap->port_no;
+ unsigned int hardport = mv_hardport_from_port(port);
void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
void __iomem *port_mmio = mv_ap_base(ap);
- u32 main_irq_mask, hc_irq_cause;
-
- /* FIXME: handle coalescing completion events properly */
-
- MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
+ u32 hc_irq_cause;

/* clear EDMA errors on this port */
writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
@@ -2779,10 +2818,7 @@ static void mv_eh_thaw(struct ata_port *ap)
hc_irq_cause &= ~((DEV_IRQ | DMA_IRQ) << hardport);
writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);

- /* enable assertion of portN err, done events */
- main_irq_mask = readl(hpriv->main_irq_mask_addr);
- main_irq_mask |= ((DONE_IRQ | ERR_IRQ) << shift);
- writelfl(main_irq_mask, hpriv->main_irq_mask_addr);
+ mv_enable_port_irqs(ap, ERR_IRQ);
}

/**
@@ -3035,7 +3071,7 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
}

/* global interrupt mask: 0 == mask everything */
- writel(0, hpriv->main_irq_mask_addr);
+ mv_set_main_irq_mask(host, ~0, 0);

n_hc = mv_get_hc_count(host->ports[0]->flags);

@@ -3083,25 +3119,12 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)

/* and unmask interrupt generation for host regs */
writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs);
- if (IS_GEN_I(hpriv))
- writelfl(~HC_MAIN_MASKED_IRQS_5,
- hpriv->main_irq_mask_addr);
- else
- writelfl(~HC_MAIN_MASKED_IRQS,
- hpriv->main_irq_mask_addr);
-
- VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
- "PCI int cause/mask=0x%08x/0x%08x\n",
- readl(hpriv->main_irq_cause_addr),
- readl(hpriv->main_irq_mask_addr),
- readl(mmio + hpriv->irq_cause_ofs),
- readl(mmio + hpriv->irq_mask_ofs));
- } else {
- writelfl(~HC_MAIN_MASKED_IRQS_SOC,
- hpriv->main_irq_mask_addr);
- VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x\n",
- readl(hpriv->main_irq_cause_addr),
- readl(hpriv->main_irq_mask_addr));
+
+ /*
+ * enable only global host interrupts for now.
+ * The per-port interrupts get done later as ports are set up.
+ */
+ mv_set_main_irq_mask(host, 0, PCI_ERR);
}
done:
return rc;
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c
index 5a10dc5..030665b 100644
--- a/drivers/ata/sata_promise.c
+++ b/drivers/ata/sata_promise.c
@@ -53,7 +53,15 @@ enum {
PDC_MMIO_BAR = 3,
PDC_MAX_PRD = LIBATA_MAX_PRD - 1, /* -1 for ASIC PRD bug workaround */

- /* register offsets */
+ /* host register offsets (from host->iomap[PDC_MMIO_BAR]) */
+ PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
+ PDC_FLASH_CTL = 0x44, /* Flash control register */
+ PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
+ PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
+ PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
+ PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
+
+ /* per-port ATA register offsets (from ap->ioaddr.cmd_addr) */
PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */
PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */
PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */
@@ -63,14 +71,11 @@ enum {
PDC_COMMAND = 0x1C, /* Command/status reg (per port) */
PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */
PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
- PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
- PDC_FLASH_CTL = 0x44, /* Flash control register */
PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
- PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
- PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
- PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
- PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
+
+ /* per-port SATA register offsets (from ap->ioaddr.scr_addr) */
+ PDC_PHYMODE4 = 0x14,

/* PDC_GLOBAL_CTL bit definitions */
PDC_PH_ERR = (1 << 8), /* PCI error while loading packet */
@@ -134,7 +139,7 @@ struct pdc_port_priv {

static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
-static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
+static int pdc_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int pdc_common_port_start(struct ata_port *ap);
static int pdc_sata_port_start(struct ata_port *ap);
static void pdc_qc_prep(struct ata_queued_cmd *qc);
@@ -332,12 +337,12 @@ static int pdc_sata_port_start(struct ata_port *ap)

/* fix up PHYMODE4 align timing */
if (ap->flags & PDC_FLAG_GEN_II) {
- void __iomem *mmio = ap->ioaddr.scr_addr;
+ void __iomem *sata_mmio = ap->ioaddr.scr_addr;
unsigned int tmp;

- tmp = readl(mmio + 0x014);
+ tmp = readl(sata_mmio + PDC_PHYMODE4);
tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
- writel(tmp, mmio + 0x014);
+ writel(tmp, sata_mmio + PDC_PHYMODE4);
}

return 0;
@@ -345,32 +350,32 @@ static int pdc_sata_port_start(struct ata_port *ap)

static void pdc_reset_port(struct ata_port *ap)
{
- void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
+ void __iomem *ata_ctlstat_mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
unsigned int i;
u32 tmp;

for (i = 11; i > 0; i--) {
- tmp = readl(mmio);
+ tmp = readl(ata_ctlstat_mmio);
if (tmp & PDC_RESET)
break;

udelay(100);

tmp |= PDC_RESET;
- writel(tmp, mmio);
+ writel(tmp, ata_ctlstat_mmio);
}

tmp &= ~PDC_RESET;
- writel(tmp, mmio);
- readl(mmio); /* flush */
+ writel(tmp, ata_ctlstat_mmio);
+ readl(ata_ctlstat_mmio); /* flush */
}

static int pdc_pata_cable_detect(struct ata_port *ap)
{
u8 tmp;
- void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;

- tmp = readb(mmio);
+ tmp = readb(ata_mmio + PDC_CTLSTAT + 3);
if (tmp & 0x01)
return ATA_CBL_PATA40;
return ATA_CBL_PATA80;
@@ -557,31 +562,25 @@ static void pdc_qc_prep(struct ata_queued_cmd *qc)
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
pdc_fill_sg(qc);
- /* fall through */
-
+ /*FALLTHROUGH*/
case ATA_PROT_NODATA:
i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
qc->dev->devno, pp->pkt);
-
if (qc->tf.flags & ATA_TFLAG_LBA48)
i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
else
i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
-
pdc_pkt_footer(&qc->tf, pp->pkt, i);
break;
-
case ATAPI_PROT_PIO:
pdc_fill_sg(qc);
break;
-
case ATAPI_PROT_DMA:
pdc_fill_sg(qc);
/*FALLTHROUGH*/
case ATAPI_PROT_NODATA:
pdc_atapi_pkt(qc);
break;
-
default:
break;
}
@@ -611,7 +610,7 @@ static unsigned int pdc_sata_ata_port_to_ata_no(const struct ata_port *ap)
unsigned int nr_ports = pdc_sata_nr_ports(ap);
unsigned int i;

- for(i = 0; i < nr_ports && host->ports[i] != ap; ++i)
+ for (i = 0; i < nr_ports && host->ports[i] != ap; ++i)
;
BUG_ON(i >= nr_ports);
return pdc_port_no_to_ata_no(i, pdc_is_sataii_tx4(ap->flags));
@@ -624,14 +623,14 @@ static unsigned int pdc_sata_hotplug_offset(const struct ata_port *ap)

static void pdc_freeze(struct ata_port *ap)
{
- void __iomem *mmio = ap->ioaddr.cmd_addr;
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
u32 tmp;

- tmp = readl(mmio + PDC_CTLSTAT);
+ tmp = readl(ata_mmio + PDC_CTLSTAT);
tmp |= PDC_IRQ_DISABLE;
tmp &= ~PDC_DMA_ENABLE;
- writel(tmp, mmio + PDC_CTLSTAT);
- readl(mmio + PDC_CTLSTAT); /* flush */
+ writel(tmp, ata_mmio + PDC_CTLSTAT);
+ readl(ata_mmio + PDC_CTLSTAT); /* flush */
}

static void pdc_sata_freeze(struct ata_port *ap)
@@ -659,17 +658,17 @@ static void pdc_sata_freeze(struct ata_port *ap)

static void pdc_thaw(struct ata_port *ap)
{
- void __iomem *mmio = ap->ioaddr.cmd_addr;
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
u32 tmp;

/* clear IRQ */
- readl(mmio + PDC_INT_SEQMASK);
+ readl(ata_mmio + PDC_COMMAND);

/* turn IRQ back on */
- tmp = readl(mmio + PDC_CTLSTAT);
+ tmp = readl(ata_mmio + PDC_CTLSTAT);
tmp &= ~PDC_IRQ_DISABLE;
- writel(tmp, mmio + PDC_CTLSTAT);
- readl(mmio + PDC_CTLSTAT); /* flush */
+ writel(tmp, ata_mmio + PDC_CTLSTAT);
+ readl(ata_mmio + PDC_CTLSTAT); /* flush */
}

static void pdc_sata_thaw(struct ata_port *ap)
@@ -743,11 +742,11 @@ static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
ata_port_abort(ap);
}

-static inline unsigned int pdc_host_intr(struct ata_port *ap,
- struct ata_queued_cmd *qc)
+static unsigned int pdc_host_intr(struct ata_port *ap,
+ struct ata_queued_cmd *qc)
{
unsigned int handled = 0;
- void __iomem *port_mmio = ap->ioaddr.cmd_addr;
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
u32 port_status, err_mask;

err_mask = PDC_ERR_MASK;
@@ -755,7 +754,7 @@ static inline unsigned int pdc_host_intr(struct ata_port *ap,
err_mask &= ~PDC1_ERR_MASK;
else
err_mask &= ~PDC2_ERR_MASK;
- port_status = readl(port_mmio + PDC_GLOBAL_CTL);
+ port_status = readl(ata_mmio + PDC_GLOBAL_CTL);
if (unlikely(port_status & err_mask)) {
pdc_error_intr(ap, qc, port_status, err_mask);
return 1;
@@ -770,7 +769,6 @@ static inline unsigned int pdc_host_intr(struct ata_port *ap,
ata_qc_complete(qc);
handled = 1;
break;
-
default:
ap->stats.idle_irq++;
break;
@@ -781,10 +779,9 @@ static inline unsigned int pdc_host_intr(struct ata_port *ap,

static void pdc_irq_clear(struct ata_port *ap)
{
- struct ata_host *host = ap->host;
- void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;

- readl(mmio + PDC_INT_SEQMASK);
+ readl(ata_mmio + PDC_COMMAND);
}

static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
@@ -794,7 +791,7 @@ static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
u32 mask = 0;
unsigned int i, tmp;
unsigned int handled = 0;
- void __iomem *mmio_base;
+ void __iomem *host_mmio;
unsigned int hotplug_offset, ata_no;
u32 hotplug_status;
int is_sataii_tx4;
@@ -806,7 +803,7 @@ static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
return IRQ_NONE;
}

- mmio_base = host->iomap[PDC_MMIO_BAR];
+ host_mmio = host->iomap[PDC_MMIO_BAR];

spin_lock(&host->lock);

@@ -815,26 +812,26 @@ static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
hotplug_offset = PDC2_SATA_PLUG_CSR;
else
hotplug_offset = PDC_SATA_PLUG_CSR;
- hotplug_status = readl(mmio_base + hotplug_offset);
+ hotplug_status = readl(host_mmio + hotplug_offset);
if (hotplug_status & 0xff)
- writel(hotplug_status | 0xff, mmio_base + hotplug_offset);
+ writel(hotplug_status | 0xff, host_mmio + hotplug_offset);
hotplug_status &= 0xff; /* clear uninteresting bits */

/* reading should also clear interrupts */
- mask = readl(mmio_base + PDC_INT_SEQMASK);
+ mask = readl(host_mmio + PDC_INT_SEQMASK);

if (mask == 0xffffffff && hotplug_status == 0) {
VPRINTK("QUICK EXIT 2\n");
goto done_irq;
}

- mask &= 0xffff; /* only 16 tags possible */
+ mask &= 0xffff; /* only 16 SEQIDs possible */
if (mask == 0 && hotplug_status == 0) {
VPRINTK("QUICK EXIT 3\n");
goto done_irq;
}

- writel(mask, mmio_base + PDC_INT_SEQMASK);
+ writel(mask, host_mmio + PDC_INT_SEQMASK);

is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags);

@@ -875,23 +872,24 @@ done_irq:
return IRQ_RETVAL(handled);
}

-static inline void pdc_packet_start(struct ata_queued_cmd *qc)
+static void pdc_packet_start(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct pdc_port_priv *pp = ap->private_data;
- void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
+ void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
+ void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
unsigned int port_no = ap->port_no;
u8 seq = (u8) (port_no + 1);

VPRINTK("ENTER, ap %p\n", ap);

- writel(0x00000001, mmio + (seq * 4));
- readl(mmio + (seq * 4)); /* flush */
+ writel(0x00000001, host_mmio + (seq * 4));
+ readl(host_mmio + (seq * 4)); /* flush */

pp->pkt[2] = seq;
wmb(); /* flush PRD, pkt writes */
- writel(pp->pkt_dma, ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
- readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */
+ writel(pp->pkt_dma, ata_mmio + PDC_PKT_SUBMIT);
+ readl(ata_mmio + PDC_PKT_SUBMIT); /* flush */
}

static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc)
@@ -909,11 +907,9 @@ static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc)
case ATA_PROT_DMA:
pdc_packet_start(qc);
return 0;
-
default:
break;
}
-
return ata_sff_qc_issue(qc);
}

@@ -987,7 +983,7 @@ static void pdc_ata_setup_port(struct ata_port *ap,

static void pdc_host_init(struct ata_host *host)
{
- void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
+ void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II;
int hotplug_offset;
u32 tmp;
@@ -1004,38 +1000,38 @@ static void pdc_host_init(struct ata_host *host)
*/

/* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
- tmp = readl(mmio + PDC_FLASH_CTL);
+ tmp = readl(host_mmio + PDC_FLASH_CTL);
tmp |= 0x02000; /* bit 13 (enable bmr burst) */
if (!is_gen2)
tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
- writel(tmp, mmio + PDC_FLASH_CTL);
+ writel(tmp, host_mmio + PDC_FLASH_CTL);

/* clear plug/unplug flags for all ports */
- tmp = readl(mmio + hotplug_offset);
- writel(tmp | 0xff, mmio + hotplug_offset);
+ tmp = readl(host_mmio + hotplug_offset);
+ writel(tmp | 0xff, host_mmio + hotplug_offset);

/* unmask plug/unplug ints */
- tmp = readl(mmio + hotplug_offset);
- writel(tmp & ~0xff0000, mmio + hotplug_offset);
+ tmp = readl(host_mmio + hotplug_offset);
+ writel(tmp & ~0xff0000, host_mmio + hotplug_offset);

/* don't initialise TBG or SLEW on 2nd generation chips */
if (is_gen2)
return;

/* reduce TBG clock to 133 Mhz. */
- tmp = readl(mmio + PDC_TBG_MODE);
+ tmp = readl(host_mmio + PDC_TBG_MODE);
tmp &= ~0x30000; /* clear bit 17, 16*/
tmp |= 0x10000; /* set bit 17:16 = 0:1 */
- writel(tmp, mmio + PDC_TBG_MODE);
+ writel(tmp, host_mmio + PDC_TBG_MODE);

- readl(mmio + PDC_TBG_MODE); /* flush */
+ readl(host_mmio + PDC_TBG_MODE); /* flush */
msleep(10);

/* adjust slew rate control register. */
- tmp = readl(mmio + PDC_SLEW_CTL);
+ tmp = readl(host_mmio + PDC_SLEW_CTL);
tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
- writel(tmp, mmio + PDC_SLEW_CTL);
+ writel(tmp, host_mmio + PDC_SLEW_CTL);
}

static int pdc_ata_init_one(struct pci_dev *pdev,
@@ -1045,7 +1041,7 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
const struct ata_port_info *ppi[PDC_MAX_PORTS];
struct ata_host *host;
- void __iomem *base;
+ void __iomem *host_mmio;
int n_ports, i, rc;
int is_sataii_tx4;

@@ -1062,7 +1058,7 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
pcim_pin_device(pdev);
if (rc)
return rc;
- base = pcim_iomap_table(pdev)[PDC_MMIO_BAR];
+ host_mmio = pcim_iomap_table(pdev)[PDC_MMIO_BAR];

/* determine port configuration and setup host */
n_ports = 2;
@@ -1072,7 +1068,7 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
ppi[i] = pi;

if (pi->flags & PDC_FLAG_SATA_PATA) {
- u8 tmp = readb(base + PDC_FLASH_CTL+1);
+ u8 tmp = readb(host_mmio + PDC_FLASH_CTL + 1);
if (!(tmp & 0x80))
ppi[n_ports++] = pi + 1;
}
@@ -1088,13 +1084,13 @@ static int pdc_ata_init_one(struct pci_dev *pdev,
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
- unsigned int port_offset = 0x200 + ata_no * 0x80;
+ unsigned int ata_offset = 0x200 + ata_no * 0x80;
unsigned int scr_offset = 0x400 + ata_no * 0x100;

- pdc_ata_setup_port(ap, base + port_offset, base + scr_offset);
+ pdc_ata_setup_port(ap, host_mmio + ata_offset, host_mmio + scr_offset);

ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
- ata_port_pbar_desc(ap, PDC_MMIO_BAR, port_offset, "port");
+ ata_port_pbar_desc(ap, PDC_MMIO_BAR, ata_offset, "ata");
}

/* initialize adapter */
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 27a1101..8ee6b5b 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -899,14 +899,25 @@ static bool sil24_qc_fill_rtf(struct ata_queued_cmd *qc)

static void sil24_pmp_attach(struct ata_port *ap)
{
+ u32 *gscr = ap->link.device->gscr;
+
sil24_config_pmp(ap, 1);
sil24_init_port(ap);
+
+ if (sata_pmp_gscr_vendor(gscr) == 0x11ab &&
+ sata_pmp_gscr_devid(gscr) == 0x4140) {
+ ata_port_printk(ap, KERN_INFO,
+ "disabling NCQ support due to sil24-mv4140 quirk\n");
+ ap->flags &= ~ATA_FLAG_NCQ;
+ }
}

static void sil24_pmp_detach(struct ata_port *ap)
{
sil24_init_port(ap);
sil24_config_pmp(ap, 0);
+
+ ap->flags |= ATA_FLAG_NCQ;
}

static int sil24_pmp_hardreset(struct ata_link *link, unsigned int *class,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 0f17643..4a92fba 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -341,7 +341,7 @@ enum {
ATA_EH_PMP_TRIES = 5,
ATA_EH_PMP_LINK_TRIES = 3,

- SATA_PMP_SCR_TIMEOUT = 250,
+ SATA_PMP_RW_TIMEOUT = 3000, /* PMP read/write timeout */

/* Horkage types. May be set by libata or controller on drives
(some horkage may be drive/controller pair dependant */
@@ -351,7 +351,7 @@ enum {
ATA_HORKAGE_NONCQ = (1 << 2), /* Don't use NCQ */
ATA_HORKAGE_MAX_SEC_128 = (1 << 3), /* Limit max sects to 128 */
ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */
- ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */
+ ATA_HORKAGE_DISABLE = (1 << 5), /* Disable it */
ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */
ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */
ATA_HORKAGE_IVB = (1 << 8), /* cbl det validity bit bugs */
@@ -821,8 +821,6 @@ struct ata_timing {
unsigned short udma; /* t2CYCTYP/2 */
};

-#define FIT(v, vmin, vmax) max_t(short, min_t(short, v, vmax), vmin)
-
/*
* Core layer - drivers/ata/libata-core.c
*/