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authorJeff Garzik <jeff@garzik.org>2007-03-09 10:54:42 -0500
committerJeff Garzik <jeff@garzik.org>2007-04-28 14:15:59 -0400
commit8cdfb29c0cd8018f92214c11c631d8926f4cb032 (patch)
treed4a74d25c301e4c045ca21c45dbcbeadde234548 /drivers/ata
parente424675f152572d8d2365e351b90bfd81686a150 (diff)
downloadop-kernel-dev-8cdfb29c0cd8018f92214c11c631d8926f4cb032.zip
op-kernel-dev-8cdfb29c0cd8018f92214c11c631d8926f4cb032.tar.gz
libata/IDE: remove combined mode quirk
Both old-IDE and libata should be able handle all controllers and devices found using normal resource reservation methods. This eliminates the awful, low-performing split-driver configuration where old-IDE drove the PATA portion of a PCI device, in PIO-only mode, and libata drove the SATA portion of the /same/ PCI device, in DMA mode. Typically vendors would ship SATA hard drive / PATA optical configuration, which would lend itself to slow (PIO-only) CD-ROM performance. For Intel users running in combined mode, it is now wholly dependent on your driver choice (potentially link order, if you compile both drivers in) whether old-IDE or libata will drive your hardware. In either case, you will get full performance from both SATA and PATA ports now, without having to pass a kernel command line parameter. Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/Kconfig5
-rw-r--r--drivers/ata/libata-sff.c36
2 files changed, 6 insertions, 35 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index c679bba..365c306 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -156,11 +156,6 @@ config SATA_INIC162X
help
This option enables support for Initio 162x Serial ATA.
-config SATA_INTEL_COMBINED
- bool
- depends on IDE=y && !BLK_DEV_IDE_SATA && (SATA_AHCI || ATA_PIIX)
- default y
-
config SATA_ACPI
bool
depends on ACPI && PCI
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 066689c..0a19466 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -779,40 +779,16 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
/* Deal with combined mode hack. This side of the logic all
goes away once the combined mode hack is killed in 2.6.21 */
if (!devm_request_region(dev, ATA_PRIMARY_CMD, 8, "libata")) {
- struct resource *conflict, res;
- res.start = ATA_PRIMARY_CMD;
- res.end = ATA_PRIMARY_CMD + 8 - 1;
- conflict = ____request_resource(&ioport_resource, &res);
- while (conflict->child)
- conflict = ____request_resource(conflict, &res);
- if (!strcmp(conflict->name, "libata"))
- legacy_mode |= ATA_PORT_PRIMARY;
- else {
- pcim_pin_device(pdev);
- printk(KERN_WARNING "ata: 0x%0X IDE port busy\n" \
- "ata: conflict with %s\n",
- ATA_PRIMARY_CMD,
- conflict->name);
- }
+ pcim_pin_device(pdev);
+ printk(KERN_WARNING "ata: 0x%0X IDE port busy\n",
+ ATA_PRIMARY_CMD);
} else
legacy_mode |= ATA_PORT_PRIMARY;
if (!devm_request_region(dev, ATA_SECONDARY_CMD, 8, "libata")) {
- struct resource *conflict, res;
- res.start = ATA_SECONDARY_CMD;
- res.end = ATA_SECONDARY_CMD + 8 - 1;
- conflict = ____request_resource(&ioport_resource, &res);
- while (conflict->child)
- conflict = ____request_resource(conflict, &res);
- if (!strcmp(conflict->name, "libata"))
- legacy_mode |= ATA_PORT_SECONDARY;
- else {
- pcim_pin_device(pdev);
- printk(KERN_WARNING "ata: 0x%X IDE port busy\n" \
- "ata: conflict with %s\n",
- ATA_SECONDARY_CMD,
- conflict->name);
- }
+ pcim_pin_device(pdev);
+ printk(KERN_WARNING "ata: 0x%X IDE port busy\n",
+ ATA_SECONDARY_CMD);
} else
legacy_mode |= ATA_PORT_SECONDARY;
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