lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix Maple PATA IRQ assignment.

Browse Source 
On the Maple board, the AMD8111 IDE is in legacy mode... except that it
appears on IRQ 20 instead of IRQ 15. For drivers/ide this was handled by
the architecture's "pci_get_legacy_ide_irq()" function, but in libata we
just hard-code the numbers 14 and 15.

This patch provides asm-powerpc/libata-portmap.h which maps the IRQ as
appropriate, having added a pci_dev argument to the
ATA_{PRIM,SECOND}ARY_IRQ macros.

There's probably a better way to do this -- especially if we observe
that the _only_ case in which this seemingly-generic
"pci_get_legacy_ide_irq()" function returns anything other than 14 and
15 for primary and secondary respectively is the case of the AMD8111 on
the Maple board -- couldn't we handle that with a special case in the
pata_amd driver, or perhaps with a PCI quirk for Maple to switch it into
native mode during early boot and assign resources properly?

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
David Woodhouse
2007-01-01 19:31:15 +00:00
committed by Jeff Garzik
parent dfd7a3db38
commit 8cdf92a98f
5 changed files with 22 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/asm-generic/libata-portmap.h
View File

@@ -3,10 +3,10 @@
#define ATA_PRIMARY_CMD 0x1F0
#define ATA_PRIMARY_CTL 0x3F6
#define ATA_PRIMARY_IRQ 14
#define ATA_PRIMARY_IRQ(dev) 14
#define ATA_SECONDARY_CMD 0x170
#define ATA_SECONDARY_CTL 0x376
#define ATA_SECONDARY_IRQ 15
#define ATA_SECONDARY_IRQ(dev) 15
#endif