haraldwolff/qemu-patch-raspberry4
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sparc64: use direct interrupt mapping for PCI devices

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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>
This commit is contained in:
Artyom Tarasenko 2013-04-27 07:55:13 +02:00 committed by Blue Swirl
parent 9625036d14
commit 903ce9fefa
1 changed files with 1 additions and 1 deletions
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2
hw/pci-host/apb.c
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@ -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)