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author <jgarzik@pretzel.yyz.us>2005-06-04 01:02:00 -0400
committerJeff Garzik <jgarzik@pobox.com>2005-06-04 01:02:00 -0400
commit70c85233814949184070ee35f8929dde64402dc9 (patch)
tree4a44a9a886be12b9477fd254d693f4fbb0297527 /drivers/scsi
parent31c94a6e987af162ac5ede83cddf49870cd1f2ed (diff)
parent73561695b2e77473e353a5ae63bab81ed5098d8e (diff)
downloadblackbird-op-linux-70c85233814949184070ee35f8929dde64402dc9.tar.gz
blackbird-op-linux-70c85233814949184070ee35f8929dde64402dc9.zip
Merge of /spare/repo/libata-dev branch bridge-detect
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/libata-core.c35
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 21d194c6ace3..84c4770e5bb4 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1295,6 +1295,37 @@ err_out:
DPRINTK("EXIT, err\n");
}
+
+static inline u8 ata_dev_knobble(struct ata_port *ap)
+{
+ return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(ap->device->id)));
+}
+
+/**
+ * ata_dev_config - Run device specific handlers and check for
+ * SATA->PATA bridges
+ * @ap: Bus
+ * @i: Device
+ *
+ * LOCKING:
+ */
+
+void ata_dev_config(struct ata_port *ap, unsigned int i)
+{
+ /* limit bridge transfers to udma5, 200 sectors */
+ if (ata_dev_knobble(ap)) {
+ printk(KERN_INFO "ata%u(%u): applying bridge limits\n",
+ ap->id, ap->device->devno);
+ ap->udma_mask &= ATA_UDMA5;
+ ap->host->max_sectors = ATA_MAX_SECTORS;
+ ap->host->hostt->max_sectors = ATA_MAX_SECTORS;
+ ap->device->flags |= ATA_DFLAG_LOCK_SECTORS;
+ }
+
+ if (ap->ops->dev_config)
+ ap->ops->dev_config(ap, &ap->device[i]);
+}
+
/**
* ata_bus_probe - Reset and probe ATA bus
* @ap: Bus to probe
@@ -1322,8 +1353,7 @@ static int ata_bus_probe(struct ata_port *ap)
ata_dev_identify(ap, i);
if (ata_dev_present(&ap->device[i])) {
found = 1;
- if (ap->ops->dev_config)
- ap->ops->dev_config(ap, &ap->device[i]);
+ ata_dev_config(ap,i);
}
}
@@ -4408,6 +4438,7 @@ EXPORT_SYMBOL_GPL(ata_scsi_release);
EXPORT_SYMBOL_GPL(ata_host_intr);
EXPORT_SYMBOL_GPL(ata_dev_classify);
EXPORT_SYMBOL_GPL(ata_dev_id_string);
+EXPORT_SYMBOL_GPL(ata_dev_config);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
#ifdef CONFIG_PCI
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