[OpenBIOS] [PATCH 10/13] pci: rename SUN4U_INTERRUPT to SUN4U_PCIAINTERRUPT

[Mark Cave-Ayland]

The current interrupt mapping is only correct for PCI bus A (QEMU
currently alters its PCI mappings to handle that PCI devices are
plugged into the PCI root bus and not behind a Simba bridge).

Add a comment to point out that the existing mapping is deprecated
and should be removed once the QEMU PCI topology has been updated.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
---
 drivers/pci.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pci.c b/drivers/pci.c
index e3b2181..8467978 100644
--- a/drivers/pci.c
+++ b/drivers/pci.c
@@ -1703,7 +1703,7 @@ static void ob_pci_host_bus_interrupt(ucell dnode, u32 *props, int *ncells, u32
 #elif defined(CONFIG_SPARC64)
 
 /* Convert device/irq pin to interrupt property */
-#define SUN4U_INTERRUPT(dev, irq_pin) \
+#define SUN4U_PCIAINTERRUPT(dev, irq_pin) \
             ((((dev >> 11) << 2) + irq_pin - 1) & 0x1f)
             
 static phandle_t ob_pci_host_set_interrupt_map(phandle_t host)
@@ -1713,10 +1713,13 @@ static phandle_t ob_pci_host_set_interrupt_map(phandle_t host)
            
 static void ob_pci_host_bus_interrupt(ucell dnode, u32 *props, int *ncells, u32 addr, u32 intno)
 {
+    /* Note: this can be removed when the Simba bridges are in place
+       as it is impossible to physically plug hardware into the PCI
+       root bus */
     *ncells += pci_encode_phys_addr(props + *ncells, 0, 0, addr, 0, 0);
     props[(*ncells)++] = intno;
     props[(*ncells)++] = dnode;
-    props[(*ncells)++] = SUN4U_INTERRUPT(addr, intno);
+    props[(*ncells)++] = SUN4U_PCIAINTERRUPT(addr, intno);
 }
 
 #else
-- 
1.7.10.4