commit 903ce9fefacd828bbcadd656ddaed8984139be29
author Artyom Tarasenko <atar4qemu@gmail.com> Sat Apr 27 07:55:13 2013 +0200
committer Blue Swirl <blauwirbel@gmail.com> Sat Apr 27 11:13:08 2013 +0000
tree 1b540208021396029f3abcaa18368585f581f1f0
parent 9625036d14bdcc908fa06cd45599115258452c46

sparc64: use direct interrupt mapping for PCI devices

Every PCI Slot in PBM has 4 directly mapped IRQ lines.
Use the IRQ routing schema 0bssnn (Bus, Slot, interrupt Number)
described in Section 19.3.3 of UltraSPARC™-IIi User's Manual.

Please note that this patch requires the OpenBIOS counterpart patch.

Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/pci-host/apb.c

diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index ccd38d0..e099655 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -365,7 +365,7 @@
         bus_offset = 16;
     else
         bus_offset = 0;
-    return bus_offset + irq_num;
+    return (bus_offset + (PCI_SLOT(pci_dev->devfn) << 2) + irq_num) & 0x1f;
 }
 
 static void pci_apb_set_irq(void *opaque, int irq_num, int level)