redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

[POWERPC] pasemi: Configure DMA controller interrupts

Browse source 
The DMA controller on PWRficient is somewhat special -- has a PCI header
so it looks like it's on the root PCI (-Express) root bus, but it uses
more than the default number of interrupts (and they are hardwired).

We need to wire up all interrupts for the DMA controller. The generic
IRQ code will only map the primary interrupt from the PCI header (128),
so add 129->211 by hand.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Olof Johansson 2007-02-04 16:36:54 -06:00 committed by Paul Mackerras
parent c388cfebbf
commit f9fba5b72d
3 changed files with 15 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
arch/powerpc/platforms/pasemi/pasemi.h
View file

@ -3,6 +3,7 @@
extern unsigned long pas_get_boot_time(void);
extern void pas_pci_init(void);
extern void __devinit pas_pci_irq_fixup(struct pci_dev *dev);
extern void __init pasemi_idle_init(void);

13
arch/powerpc/platforms/pasemi/pci.c
View file

@ -163,6 +163,19 @@ static void __init pas_fixup_phb_resources(void)
}
void __devinit pas_pci_irq_fixup(struct pci_dev *dev)
{
/* DMA is special, 84 interrupts (128 -> 211), all but 128
* need to be mapped by hand here.
*/
if (dev->vendor == 0x1959 && dev->device == 0xa007) {
int i;
for (i = 129; i < 212; i++)
irq_create_mapping(NULL, i);
}
}
void __init pas_pci_init(void)
{
struct device_node *np, *root;

1
arch/powerpc/platforms/pasemi/setup.c
View file

@ -235,4 +235,5 @@ define_machine(pas) {
.check_legacy_ioport = pas_check_legacy_ioport,
.progress = pas_progress,
.machine_check_exception = pas_machine_check_handler,
.pci_irq_fixup = pas_pci_irq_fixup,
};