[POWERPC] pasemi: Configure DMA controller interrupts

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>

3 files changed, 15 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
index 94fd00cc6a10..8391e31d4733 100644
--- a/arch/powerpc/platforms/pasemi/pasemi.h
+++ b/arch/powerpc/platforms/pasemi/pasemi.h
@@ -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);
 
diff --git a/arch/powerpc/platforms/pasemi/pci.c b/arch/powerpc/platforms/pasemi/pci.c
index faa618e04047..7ecb2ba24db9 100644
--- a/arch/powerpc/platforms/pasemi/pci.c
+++ b/arch/powerpc/platforms/pasemi/pci.c
@@ -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;
diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c
index 2d9652b6acb3..9096aac1c622 100644
--- a/arch/powerpc/platforms/pasemi/setup.c
+++ b/arch/powerpc/platforms/pasemi/setup.c
@@ -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,
 };