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authorMichael Ellerman <michael@ellerman.id.au>2007-05-08 02:58:36 (GMT)
committerPaul Mackerras <paulus@samba.org>2007-05-08 03:43:48 (GMT)
commita7de7c74227edda719b257eb15aecd73790ff894 (patch)
treec5168a047e3b55b220a869c678a9fefb76ffbdfc /arch/powerpc/sysdev/mpic.c
parent812fd1fd63caf2d72906603ebb9c6049a19ef4d2 (diff)
downloadlinux-fsl-qoriq-a7de7c74227edda719b257eb15aecd73790ff894.tar.xz
[POWERPC] MPIC MSI allocator
To support MSI on MPIC we need a way to reserve and allocate hardware irq numbers, this patch implements an allocator for that purpose. New firmware platforms must define a "msi-available-ranges" property on their MPIC node for MSI to work. For U3/U4 we do a best-guess setup. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/sysdev/mpic.c')
-rw-r--r--arch/powerpc/sysdev/mpic.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 33ecf89..fc0428a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -36,6 +36,8 @@
#include <asm/mpic.h>
#include <asm/smp.h>
+#include "mpic.h"
+
#ifdef DEBUG
#define DBG(fmt...) printk(fmt)
#else
@@ -891,6 +893,8 @@ static int mpic_host_map(struct irq_host *h, unsigned int virq,
if (hw >= mpic->irq_count)
return -EINVAL;
+ mpic_msi_reserve_hwirq(mpic, hw);
+
/* Default chip */
chip = &mpic->hc_irq;