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[Qemu-devel] [PATCH 3/3] sparc64: use direct interrupt mapping for PCI d
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From: |
Artyom Tarasenko |
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Subject: |
[Qemu-devel] [PATCH 3/3] sparc64: use direct interrupt mapping for PCI devices |
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Date: |
Sat, 27 Apr 2013 07:55:13 +0200 |
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 <address@hidden>
---
hw/pci-host/apb.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index 356853a..93ce46d 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -365,7 +365,7 @@ static int pci_pbm_map_irq(PCIDevice *pci_dev, int irq_num)
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)
--
1.7.1