alpha: more fixes for specific machine types
Ivan Kokshaysky [Tue, 17 Apr 2007 05:53:21 +0000 (22:53 -0700)]
arch/alpha/kernel/sys_sx164.c

Earlier firmware revisions need MVI fix as well.

arch/alpha/kernel/sys_nautilus.c

On UP1500 firmware reports wrong AGP IRQ (10 instead of 5).
This causes interrupt storm if there is a PCI device that
uses IRQ 5.

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>

arch/alpha/kernel/sys_nautilus.c
arch/alpha/kernel/sys_sx164.c

index e7594a7..920196b 100644 (file)
@@ -70,6 +70,12 @@ nautilus_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
        /* Preserve the IRQ set up by the console.  */
 
        u8 irq;
+       /* UP1500: AGP INTA is actually routed to IRQ 5, not IRQ 10 as
+          console reports. Check the device id of AGP bridge to distinguish
+          UP1500 from UP1000/1100. Note: 'pin' is 2 due to bridge swizzle. */
+       if (slot == 1 && pin == 2 &&
+           dev->bus->self && dev->bus->self->device == 0x700f)
+               return 5;
        pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
        return irq;
 }
index 94ad68b..41d4ad4 100644 (file)
@@ -132,7 +132,7 @@ sx164_init_arch(void)
 
        if (amask(AMASK_MAX) != 0
            && alpha_using_srm
-           && (cpu->pal_revision & 0xffff) == 0x117) {
+           && (cpu->pal_revision & 0xffff) <= 0x117) {
                __asm__ __volatile__(
                "lda    $16,8($31)\n"
                "call_pal 9\n"          /* Allow PALRES insns in kernel mode */