diff options
| author | Jeff Garzik <jeff@garzik.org> | 2007-03-09 10:54:42 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-04-28 14:15:59 -0400 |
| commit | 8cdfb29c0cd8018f92214c11c631d8926f4cb032 (patch) | |
| tree | d4a74d25c301e4c045ca21c45dbcbeadde234548 /drivers/ata/libata-sff.c | |
| parent | e424675f152572d8d2365e351b90bfd81686a150 (diff) | |
| download | linux-8cdfb29c0cd8018f92214c11c631d8926f4cb032.tar.bz2 | |
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/libata-sff.c')
| -rw-r--r-- | drivers/ata/libata-sff.c | 36 |
1 files changed, 6 insertions, 30 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 066689c5e509..0a194660fd21 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; |