[POWERPC] cell: add RAS support

This is a first version of support for the Cell BE "Reliability,
Availability and Serviceability" features.

It doesn't yet handle some of the RAS interrupts (the ones described in
iic_is/iic_irr), I'm still working on a proper way to expose these. They
are essentially a cascaded controller by themselves (sic !) though I may
just handle them locally to the iic driver. I need also to sync with
David Erb on the way he hooked in the performance monitor interrupt.

So that's all for 2.6.17 and I'll do more work on that with my rework of
the powerpc interrupt layer that I'm hacking on at the moment.

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

1 files changed, 9 insertions, 28 deletions

diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 978be1c30c1..0a707bcabef 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -33,29 +33,10 @@
 #include <asm/ptrace.h>
 
 #include "interrupt.h"
-
-struct iic_pending_bits {
-	u32 data;
-	u8 flags;
-	u8 class;
-	u8 source;
-	u8 prio;
-};
-
-enum iic_pending_flags {
-	IIC_VALID = 0x80,
-	IIC_IPI   = 0x40,
-};
-
-struct iic_regs {
-	struct iic_pending_bits pending;
-	struct iic_pending_bits pending_destr;
-	u64 generate;
-	u64 prio;
-};
+#include "cbe_regs.h"
 
 struct iic {
-	struct iic_regs __iomem *regs;
+	struct cbe_iic_thread_regs __iomem *regs;
 	u8 target_id;
 };
 
@@ -115,7 +96,7 @@ static struct hw_interrupt_type iic_pic = {
 	.end = iic_end,
 };
 
-static int iic_external_get_irq(struct iic_pending_bits pending)
+static int iic_external_get_irq(struct cbe_iic_pending_bits pending)
 {
 	int irq;
 	unsigned char node, unit;
@@ -168,15 +149,15 @@ int iic_get_irq(struct pt_regs *regs)
 {
 	struct iic *iic;
 	int irq;
-	struct iic_pending_bits pending;
+	struct cbe_iic_pending_bits pending;
 
 	iic = &__get_cpu_var(iic);
 	*(unsigned long *) &pending = 
 		in_be64((unsigned long __iomem *) &iic->regs->pending_destr);
 
 	irq = -1;
-	if (pending.flags & IIC_VALID) {
-		if (pending.flags & IIC_IPI) {
+	if (pending.flags & CBE_IIC_IRQ_VALID) {
+		if (pending.flags & CBE_IIC_IRQ_IPI) {
 			irq = IIC_IPI_OFFSET + (pending.prio >> 4);
 /*
 			if (irq > 0x80)
@@ -226,7 +207,7 @@ static int setup_iic_hardcoded(void)
 			regs += 0x20;
 
 		printk(KERN_INFO "IIC for CPU %d at %lx\n", cpu, regs);
-		iic->regs = ioremap(regs, sizeof(struct iic_regs));
+		iic->regs = ioremap(regs, sizeof(struct cbe_iic_thread_regs));
 		iic->target_id = (nodeid << 4) + ((cpu & 1) ? 0xf : 0xe);
 	}
 
@@ -267,12 +248,12 @@ static int setup_iic(void)
 		}
 
  		iic = &per_cpu(iic, np[0]);
- 		iic->regs = ioremap(regs[0], sizeof(struct iic_regs));
+ 		iic->regs = ioremap(regs[0], sizeof(struct cbe_iic_thread_regs));
 		iic->target_id = ((np[0] & 2) << 3) + ((np[0] & 1) ? 0xf : 0xe);
  		printk("IIC for CPU %d at %lx mapped to %p\n", np[0], regs[0], iic->regs);
 
  		iic = &per_cpu(iic, np[1]);
- 		iic->regs = ioremap(regs[2], sizeof(struct iic_regs));
+ 		iic->regs = ioremap(regs[2], sizeof(struct cbe_iic_thread_regs));
 		iic->target_id = ((np[1] & 2) << 3) + ((np[1] & 1) ? 0xf : 0xe);
  		printk("IIC for CPU %d at %lx mapped to %p\n", np[1], regs[2], iic->regs);