alpha: fixes for specific machine types

Files:

arch/alpha/kernel/core_mcpcia.c
arch/alpha/kernel/sys_rawhide.c
include/asm-alpha/core_mcpcia.h

	Determine correct hose configuration; RAWHIDE family can have
        2 or 4 hoses, so make sure non-existent hoses are ignored.

arch/alpha/kernel/err_titan.c

	Supply a needed #include <asm/irq_regs.h>

arch/alpha/kernel/module.c

	Add some useful output to the relocation overflow messages.

arch/alpha/kernel/sys_noritake.c

	Supply necessary noritake_end_irq() to correct interrupt handling.
	This fixes a problem first noted by hangs during boot probing with
	a DE500-BA TULIP NIC present.

arch/alpha/kernel/sys_sio.c

	Correct saving of original PIRQ register (PCI IRQ routing);
	change default PIRQ setting to leave PCI IRQs 9 and 14 free to
	be used for sound (Multia) and IDE (any), respectively.

include/asm-alpha/io.h

	Supply the "isa_virt_to_bus" routine.

Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
index 581d08c70b9..672cb2df53d 100644
--- a/arch/alpha/kernel/sys_rawhide.c
+++ b/arch/alpha/kernel/sys_rawhide.c
@@ -52,6 +52,9 @@ rawhide_update_irq_hw(int hose, int mask)
 	*(vuip)MCPCIA_INT_MASK0(MCPCIA_HOSE2MID(hose));
 }
 
+#define hose_exists(h) \
+  (((h) < MCPCIA_MAX_HOSES) && (cached_irq_masks[(h)] != 0))
+
 static inline void 
 rawhide_enable_irq(unsigned int irq)
 {
@@ -59,6 +62,9 @@ rawhide_enable_irq(unsigned int irq)
 
 	irq -= 16;
 	hose = irq / 24;
+	if (!hose_exists(hose)) /* if hose non-existent, exit */
+		return;
+
 	irq -= hose * 24;
 	mask = 1 << irq;
 
@@ -76,6 +82,9 @@ rawhide_disable_irq(unsigned int irq)
 
 	irq -= 16;
 	hose = irq / 24;
+	if (!hose_exists(hose)) /* if hose non-existent, exit */
+		return;
+
 	irq -= hose * 24;
 	mask = ~(1 << irq) | hose_irq_masks[hose];
 
@@ -93,6 +102,9 @@ rawhide_mask_and_ack_irq(unsigned int irq)
 
 	irq -= 16;
 	hose = irq / 24;
+	if (!hose_exists(hose)) /* if hose non-existent, exit */
+		return;
+
 	irq -= hose * 24;
 	mask1 = 1 << irq;
 	mask = ~mask1 | hose_irq_masks[hose];
@@ -169,6 +181,9 @@ rawhide_init_irq(void)
 
 	mcpcia_init_hoses();
 
+	/* Clear them all; only hoses that exist will be non-zero. */
+	for (i = 0; i < MCPCIA_MAX_HOSES; i++) cached_irq_masks[i] = 0;
+
 	for (hose = hose_head; hose; hose = hose->next) {
 		unsigned int h = hose->index;
 		unsigned int mask = hose_irq_masks[h];