On 09/22/14 00:10, Gabriel L. Somlo wrote: > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKE] (IRQs 5 *10 11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKF] (IRQs 5 *10 11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKG] (IRQs 5 10 *11) > dmsg_bios.log: ACPI: PCI Interrupt Link [LNKH] (IRQs 5 10 *11) > > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKA] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKB] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKE] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKF] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKG] (IRQs 5 10 11) *0, disabled. > dmsg_ovmf.log: ACPI: PCI Interrupt Link [LNKH] (IRQs 5 10 11) *0, disabled.
I mentioned earlier that grepping OvmfPkg for PCI_LIB_ADDRESS would be necessary. See PciInitialization() in "OvmfPkg/Library/PlatformBdsLib/BdsPlatform.c". // // Bus 0, Device 1, Function 0 - PCI to ISA Bridge // PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x3c), 0x00); PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x60), 0x0b); // LNKA routing target PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x61), 0x0b); // LNKB routing target PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x62), 0x0a); // LNKC routing target PciWrite8 (PCI_LIB_ADDRESS (0, 1, 0, 0x63), 0x0a); // LNKD routing target This is not appropriate for q35. See "ICH9 PCI to ISA irq remapping" in qemu's "q35-acpi-dsdt.dsl" file, vs. "PIIX PCI to ISA irq remapping" in "acpi-dsdt.dsl". The above was added in 05c89c7f. Thanks Laszlo
