Convert ata_piix to new probing mechanism. Automatic hotplug is not
supported due to hardware limitation (no PHY event interrupt), but
warm plugging works.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/ata_piix.c | 87 +++++++++++++++++------------------------------
1 files changed, 32 insertions(+), 55 deletions(-)
ccc4672aff1861a9c80ed9e8ec11dc304b31d307
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 54c2e52..521b718 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -146,11 +146,10 @@ struct piix_map_db {
static int piix_init_one (struct pci_dev *pdev,
const struct pci_device_id *ent);
-
-static int piix_pata_probe_reset(struct ata_port *ap, unsigned int *classes);
-static int piix_sata_probe_reset(struct ata_port *ap, unsigned int *classes);
static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev);
static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev);
+static void piix_pata_error_handler(struct ata_port *ap);
+static void piix_sata_error_handler(struct ata_port *ap);
static unsigned int in_module_init = 1;
@@ -237,8 +236,6 @@ static const struct ata_port_operations
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .probe_reset = piix_pata_probe_reset,
-
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
.bmdma_stop = ata_bmdma_stop,
@@ -249,7 +246,7 @@ static const struct ata_port_operations
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
- .error_handler = ata_bmdma_error_handler,
+ .error_handler = piix_pata_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
@@ -269,8 +266,6 @@ static const struct ata_port_operations
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .probe_reset = piix_sata_probe_reset,
-
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
.bmdma_stop = ata_bmdma_stop,
@@ -281,7 +276,7 @@ static const struct ata_port_operations
.freeze = ata_bmdma_freeze,
.thaw = ata_bmdma_thaw,
- .error_handler = ata_bmdma_error_handler,
+ .error_handler = piix_sata_error_handler,
.post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
@@ -466,59 +461,51 @@ cbl40:
}
/**
- * piix_pata_probeinit - probeinit for PATA host controller
+ * piix_pata_prereset - prereset for PATA host controller
* @ap: Target port
*
- * Probeinit including cable detection.
- *
- * LOCKING:
- * None (inherited from caller).
- */
-static void piix_pata_probeinit(struct ata_port *ap)
-{
- piix_pata_cbl_detect(ap);
- ata_std_probeinit(ap);
-}
-
-/**
- * piix_pata_probe_reset - Perform reset on PATA port and classify
- * @ap: Port to reset
- * @classes: Resulting classes of attached devices
- *
- * Reset PATA phy and classify attached devices.
+ * Prereset including cable detection.
*
* LOCKING:
* None (inherited from caller).
*/
-static int piix_pata_probe_reset(struct ata_port *ap, unsigned int *classes)
+static int piix_pata_prereset(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->hard_port_no])) {
ata_port_printk(ap, KERN_INFO, "port disabled. ignoring.\n");
+ ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
return 0;
}
- return ata_drive_probe_reset(ap, piix_pata_probeinit,
- ata_std_softreset, NULL,
- ata_std_postreset, classes);
+ piix_pata_cbl_detect(ap);
+
+ return ata_std_prereset(ap);
+}
+
+static void piix_pata_error_handler(struct ata_port *ap)
+{
+ ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL,
+ ata_std_postreset);
}
/**
- * piix_sata_probe - Probe PCI device for present SATA devices
- * @ap: Port associated with the PCI device we wish to probe
+ * piix_sata_prereset - prereset for SATA host controller
+ * @ap: Target port
*
* Reads and configures SATA PCI device's PCI config register
* Port Configuration and Status (PCS) to determine port and
- * device availability.
+ * device availability. Return -ENODEV to skip reset if no
+ * device is present.
*
* LOCKING:
* None (inherited from caller).
*
* RETURNS:
- * Mask of avaliable devices on the port.
+ * 0 if device is present, -ENODEV otherwise.
*/
-static unsigned int piix_sata_probe (struct ata_port *ap)
+static int piix_sata_prereset(struct ata_port *ap)
{
struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
const unsigned int *map = ap->host_set->private_data;
@@ -560,29 +547,19 @@ static unsigned int piix_sata_probe (str
DPRINTK("ata%u: LEAVE, pcs=0x%x present_mask=0x%x\n",
ap->id, pcs, present_mask);
- return present_mask;
-}
-
-/**
- * piix_sata_probe_reset - Perform reset on SATA port and classify
- * @ap: Port to reset
- * @classes: Resulting classes of attached devices
- *
- * Reset SATA phy and classify attached devices.
- *
- * LOCKING:
- * None (inherited from caller).
- */
-static int piix_sata_probe_reset(struct ata_port *ap, unsigned int *classes)
-{
- if (!piix_sata_probe(ap)) {
+ if (!present_mask) {
ata_port_printk(ap, KERN_INFO, "SATA port has no device.\n");
+ ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
return 0;
}
- return ata_drive_probe_reset(ap, ata_std_probeinit,
- ata_std_softreset, NULL,
- ata_std_postreset, classes);
+ return ata_std_prereset(ap);
+}
+
+static void piix_sata_error_handler(struct ata_port *ap)
+{
+ ata_bmdma_drive_eh(ap, piix_sata_prereset, ata_std_softreset, NULL,
+ ata_std_postreset);
}
/**
--
1.3.2
-
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