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Message-ID: <20070516053628.GA17870@havoc.gtf.org>
Date: Wed, 16 May 2007 01:36:28 -0400
From: Jeff Garzik <jeff@...zik.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-ide@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: [git patches] libata fixes
All bug fixes. The two things that do not seem like bugfixes ("separate
out..." and "add ATA_FLAG_ACPI_SATA") are not as they seem. The former
is a prep patch for a fix, and the latter fixes what ACPI considers a
legacy IDE interface.
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/ahci.c | 3 +-
drivers/ata/libata-acpi.c | 10 +++---
drivers/ata/libata-core.c | 80 +++++++++++++++++++++++++++-----------------
drivers/ata/libata-scsi.c | 44 ++++++++++++++++++++----
drivers/ata/libata.h | 3 +-
drivers/ata/pata_scc.c | 4 +-
drivers/ata/sata_sil24.c | 3 +-
include/linux/libata.h | 3 +-
8 files changed, 100 insertions(+), 50 deletions(-)
Al Viro (1):
pata_scc had been missed by ata_std_prereset() switch
Tejun Heo (5):
libata: separate out ata_dev_reread_id()
libata: during revalidation, check n_sectors after device is configured
libata-acpi: add ATA_FLAG_ACPI_SATA port flag
libata: fix shutdown warning message printing
libata: track spindown status and skip spindown_compat if possible
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 1ae443d..e00e1b9 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -173,7 +173,8 @@ enum {
AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
- ATA_FLAG_SKIP_D2H_BSY,
+ ATA_FLAG_SKIP_D2H_BSY |
+ ATA_FLAG_ACPI_SATA,
};
struct ahci_cmd_hdr {
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index ed4138e..0223673 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -321,7 +321,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length,
/* Don't continue if device has no _ADR method.
* _GTF is intended for known motherboard devices. */
- if (!(ap->cbl == ATA_CBL_SATA)) {
+ if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn);
if (err < 0) {
if (ata_msg_probe(ap))
@@ -343,7 +343,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length,
/* Get this drive's _ADR info. if not already known. */
if (!dev->obj_handle) {
- if (!(ap->cbl == ATA_CBL_SATA)) {
+ if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
/* get child objects of dev_handle == channel objects,
* + _their_ children == drive objects */
/* channel is ap->port_no */
@@ -528,7 +528,7 @@ static int do_drive_set_taskfiles(struct ata_device *dev,
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
__FUNCTION__, ap->port_no);
- if (libata_noacpi || !(ap->cbl == ATA_CBL_SATA))
+ if (libata_noacpi || !(ap->flags & ATA_FLAG_ACPI_SATA))
return 0;
if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED))
@@ -578,7 +578,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
* we should not run GTF on PATA devices since some
* PATA require execution of GTM/STM before GTF.
*/
- if (!(ap->cbl == ATA_CBL_SATA))
+ if (!(ap->flags & ATA_FLAG_ACPI_SATA))
return 0;
for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
@@ -641,7 +641,7 @@ int ata_acpi_push_id(struct ata_device *dev)
__FUNCTION__, dev->devno, ap->port_no);
/* Don't continue if not a SATA device. */
- if (!(ap->cbl == ATA_CBL_SATA)) {
+ if (!(ap->flags & ATA_FLAG_ACPI_SATA)) {
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG,
"%s: Not a SATA device\n", __FUNCTION__);
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4166407..d5939e6 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1919,7 +1919,6 @@ int ata_dev_configure(struct ata_device *dev)
snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id));
dev->n_sectors = ata_id_n_sectors(id);
- dev->n_sectors_boot = dev->n_sectors;
/* SCSI only uses 4-char revisions, dump full 8 chars from ATA */
ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV,
@@ -3632,7 +3631,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
const u16 *old_id = dev->id;
unsigned char model[2][ATA_ID_PROD_LEN + 1];
unsigned char serial[2][ATA_ID_SERNO_LEN + 1];
- u64 new_n_sectors;
if (dev->class != new_class) {
ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n",
@@ -3644,7 +3642,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1]));
ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0]));
ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1]));
- new_n_sectors = ata_id_n_sectors(new_id);
if (strcmp(model[0], model[1])) {
ata_dev_printk(dev, KERN_INFO, "model number mismatch "
@@ -3658,25 +3655,12 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
return 0;
}
- if (dev->class == ATA_DEV_ATA && dev->n_sectors != new_n_sectors) {
- ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
- "%llu != %llu\n",
- (unsigned long long)dev->n_sectors,
- (unsigned long long)new_n_sectors);
- /* Are we the boot time size - if so we appear to be the
- same disk at this point and our HPA got reapplied */
- if (ata_ignore_hpa && dev->n_sectors_boot == new_n_sectors
- && ata_id_hpa_enabled(new_id))
- return 1;
- return 0;
- }
-
return 1;
}
/**
- * ata_dev_revalidate - Revalidate ATA device
- * @dev: device to revalidate
+ * ata_dev_reread_id - Re-read IDENTIFY data
+ * @adev: target ATA device
* @readid_flags: read ID flags
*
* Re-read IDENTIFY page and make sure @dev is still attached to
@@ -3688,34 +3672,68 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class,
* RETURNS:
* 0 on success, negative errno otherwise
*/
-int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
+int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags)
{
unsigned int class = dev->class;
u16 *id = (void *)dev->ap->sector_buf;
int rc;
- if (!ata_dev_enabled(dev)) {
- rc = -ENODEV;
- goto fail;
- }
-
/* read ID data */
rc = ata_dev_read_id(dev, &class, readid_flags, id);
if (rc)
- goto fail;
+ return rc;
/* is the device still there? */
- if (!ata_dev_same_device(dev, class, id)) {
- rc = -ENODEV;
- goto fail;
- }
+ if (!ata_dev_same_device(dev, class, id))
+ return -ENODEV;
memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS);
+ return 0;
+}
+
+/**
+ * ata_dev_revalidate - Revalidate ATA device
+ * @dev: device to revalidate
+ * @readid_flags: read ID flags
+ *
+ * Re-read IDENTIFY page, make sure @dev is still attached to the
+ * port and reconfigure it according to the new IDENTIFY page.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 on success, negative errno otherwise
+ */
+int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags)
+{
+ u64 n_sectors = dev->n_sectors;
+ int rc;
+
+ if (!ata_dev_enabled(dev))
+ return -ENODEV;
+
+ /* re-read ID */
+ rc = ata_dev_reread_id(dev, readid_flags);
+ if (rc)
+ goto fail;
/* configure device according to the new ID */
rc = ata_dev_configure(dev);
- if (rc == 0)
- return 0;
+ if (rc)
+ goto fail;
+
+ /* verify n_sectors hasn't changed */
+ if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) {
+ ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
+ "%llu != %llu\n",
+ (unsigned long long)n_sectors,
+ (unsigned long long)dev->n_sectors);
+ rc = -ENODEV;
+ goto fail;
+ }
+
+ return 0;
fail:
ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index dd81fa7..b6a1de8 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -893,6 +893,23 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
return queue_depth;
}
+/* XXX: for ata_spindown_compat */
+static void ata_delayed_done_timerfn(unsigned long arg)
+{
+ struct scsi_cmnd *scmd = (void *)arg;
+
+ scmd->scsi_done(scmd);
+}
+
+/* XXX: for ata_spindown_compat */
+static void ata_delayed_done(struct scsi_cmnd *scmd)
+{
+ static struct timer_list timer;
+
+ setup_timer(&timer, ata_delayed_done_timerfn, (unsigned long)scmd);
+ mod_timer(&timer, jiffies + 5 * HZ);
+}
+
/**
* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
* @qc: Storage for translated ATA taskfile
@@ -950,21 +967,24 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc)
* for more info.
*/
if (ata_spindown_compat &&
+ (qc->dev->flags & ATA_DFLAG_SPUNDOWN) &&
(system_state == SYSTEM_HALT ||
system_state == SYSTEM_POWER_OFF)) {
- static int warned = 0;
+ static unsigned long warned = 0;
- if (!warned) {
- spin_unlock_irq(qc->ap->lock);
+ if (!test_and_set_bit(0, &warned)) {
ata_dev_printk(qc->dev, KERN_WARNING,
"DISK MIGHT NOT BE SPUN DOWN PROPERLY. "
"UPDATE SHUTDOWN UTILITY\n");
ata_dev_printk(qc->dev, KERN_WARNING,
"For more info, visit "
"http://linux-ata.org/shutdown.html\n");
- warned = 1;
- ssleep(5);
- spin_lock_irq(qc->ap->lock);
+
+ /* ->scsi_done is not used, use it for
+ * delayed completion.
+ */
+ scmd->scsi_done = qc->scsidone;
+ qc->scsidone = ata_delayed_done;
}
scmd->result = SAM_STAT_GOOD;
return 1;
@@ -1375,6 +1395,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc)
}
}
+ /* XXX: track spindown state for spindown_compat */
+ if (unlikely(qc->tf.command == ATA_CMD_STANDBY ||
+ qc->tf.command == ATA_CMD_STANDBYNOW1))
+ qc->dev->flags |= ATA_DFLAG_SPUNDOWN;
+ else if (likely(system_state != SYSTEM_HALT &&
+ system_state != SYSTEM_POWER_OFF))
+ qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN;
+
if (need_sense && !ap->ops->error_handler)
ata_dump_status(ap->print_id, &qc->result_tf);
@@ -1488,14 +1516,14 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd,
early_finish:
ata_qc_free(qc);
- done(cmd);
+ qc->scsidone(cmd);
DPRINTK("EXIT - early finish (good or error)\n");
return 0;
err_did:
ata_qc_free(qc);
cmd->result = (DID_ERROR << 16);
- done(cmd);
+ qc->scsidone(cmd);
err_mem:
DPRINTK("EXIT - internal\n");
return 0;
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 8b71b73..13cb0c9 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -76,7 +76,8 @@ extern unsigned ata_exec_internal_sg(struct ata_device *dev,
extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd);
extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
unsigned int flags, u16 *id);
-extern int ata_dev_revalidate(struct ata_device *dev, unsigned int flags);
+extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
+extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags);
extern int ata_dev_configure(struct ata_device *dev);
extern int sata_down_spd_limit(struct ata_port *ap);
extern int sata_set_spd_needed(struct ata_port *ap);
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index cca3aa2..844e53b 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -864,10 +864,10 @@ static void scc_bmdma_freeze (struct ata_port *ap)
* @ap: ATA port to be reset
*/
-static int scc_pata_prereset (struct ata_port *ap)
+static int scc_pata_prereset (struct ata_port *ap, unsigned long deadline)
{
ap->cbl = ATA_CBL_PATA80;
- return ata_std_prereset(ap);
+ return ata_std_prereset(ap, deadline);
}
/**
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index a69d78c..0cb6618 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -237,7 +237,8 @@ enum {
/* host flags */
SIL24_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
- ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY,
+ ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY |
+ ATA_FLAG_ACPI_SATA,
SIL24_FLAG_PCIX_IRQ_WOC = (1 << 24), /* IRQ loss errata on PCI-X */
IRQ_STAT_4PORTS = 0xf,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 27d9362..666592e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -140,6 +140,7 @@ enum {
ATA_DFLAG_PIO = (1 << 8), /* device limited to PIO mode */
ATA_DFLAG_NCQ_OFF = (1 << 9), /* device limited to non-NCQ mode */
+ ATA_DFLAG_SPUNDOWN = (1 << 10), /* XXX: for spindown_compat */
ATA_DFLAG_INIT_MASK = (1 << 16) - 1,
ATA_DFLAG_DETACH = (1 << 16),
@@ -173,6 +174,7 @@ enum {
ATA_FLAG_SETXFER_POLLING= (1 << 14), /* use polling for SETXFER */
ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */
ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */
+ ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
/* The following flag belongs to ap->pflags but is kept in
* ap->flags because it's referenced in many LLDs and will be
@@ -431,7 +433,6 @@ struct ata_device {
struct scsi_device *sdev; /* attached SCSI device */
/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
u64 n_sectors; /* size of device, if ATA */
- u64 n_sectors_boot; /* size of ATA device at startup */
unsigned int class; /* ATA_DEV_xxx */
u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
u8 pio_mode;
-
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