[PATCH] ppc64: Add driver for BPA interrupt controllers

Add support for the integrated interrupt controller on BPA
CPUs. There is one of those for each SMT thread.

The mapping of interrupt numbers to HW interrupt sources
is described in arch/ppc64/kernel/bpa_iic.h.

This version hardcodes the 'Spider' chip as the secondary
interrupt controller. That is not really generic for the
architecture, but at the moment it is the only secondary
PIC that exists.

A little more work will be needed on this as soon as
we have boards with multiple external interrupt controllers.

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/ppc64/kernel/bpa_setup.c b/arch/ppc64/kernel/bpa_setup.c
index d1992dd2d61b..0a43d8a93d76 100644
--- a/arch/ppc64/kernel/bpa_setup.c
+++ b/arch/ppc64/kernel/bpa_setup.c
@@ -45,6 +45,7 @@
 #include <asm/cputable.h>
 
 #include "pci.h"
+#include "bpa_iic.h"
 
 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
@@ -71,6 +72,9 @@ static void bpa_progress(char *s, unsigned short hex)
 
 static void __init bpa_setup_arch(void)
 {
+        ppc_md.init_IRQ       = iic_init_IRQ;
+        ppc_md.get_irq        = iic_get_irq;
+
 #ifdef CONFIG_SMP
         smp_init_pSeries();
 #endif
@@ -86,7 +90,7 @@ static void __init bpa_setup_arch(void)
         /* Find and initialize PCI host bridges */
         init_pci_config_tokens();
         find_and_init_phbs();
-
+        spider_init_IRQ();
 #ifdef CONFIG_DUMMY_CONSOLE
         conswitchp = &dummy_con;
 #endif