[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [qemu-xen-unstable] passthrough: Correctly expose PCH ISA bridge for IGD passthrough
commit 73c4ad5a3d065267b878c8ae31ff0b4833f093e4 Author: G.R <firemeteor.guo@xxxxxxxxx> AuthorDate: Thu Jul 25 08:11:55 2013 +0000 Commit: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> CommitDate: Mon Aug 5 16:50:12 2013 +0100 passthrough: Correctly expose PCH ISA bridge for IGD passthrough The i915 driver probes chip version through PCH ISA bridge device / vendor ID. Previously, the PCH ISA bridge is exposed as PCI-PCI bridge in qemu-xen-trad, which breaks the assumption of the driver. This change fixes the issue by correctly exposing the ISA bridge to domU. Signed-off-by: Rui Guo <firemeteor@xxxxxxxxxxxxxxxxxxxxx> Tested-by: Rui Guo <firemeteor@xxxxxxxxxxxxxxxxxxxxx> Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Acked-by: Jan Beulich <JBeulich@xxxxxxxx> --- hw/pci.c | 10 ++++++++++ hw/pci.h | 3 +++ hw/pt-graphics.c | 9 ++++++--- 3 files changed, 19 insertions(+), 3 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index f051de1..c423285 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -938,6 +938,16 @@ PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did, return s->bus; } +PCIBus *pci_isa_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did, + uint8_t rid, pci_map_irq_fn map_irq, const char *name) +{ + PCIBus *s = pci_bridge_init(bus, devfn, vid, did, rid, map_irq, name); + + pci_config_set_class(s->parent_dev->config, PCI_CLASS_BRIDGE_ISA); + s->parent_dev->config[PCI_HEADER_TYPE] = 0x80; + return s; +} + int pt_chk_bar_overlap(PCIBus *bus, int devfn, uint32_t addr, uint32_t size, uint8_t type) { diff --git a/hw/pci.h b/hw/pci.h index edc58b6..cacbdd2 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -271,6 +271,9 @@ void pci_info(void); PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did, uint8_t rid, pci_map_irq_fn map_irq, const char *name); +PCIBus *pci_isa_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did, + uint8_t rid, pci_map_irq_fn map_irq, const char *name); + #define NR_PCI_FUNC 8 #define NR_PCI_DEV 32 #define NR_PCI_DEVFN (NR_PCI_FUNC * NR_PCI_DEV) diff --git a/hw/pt-graphics.c b/hw/pt-graphics.c index c6f8869..7302b25 100644 --- a/hw/pt-graphics.c +++ b/hw/pt-graphics.c @@ -3,6 +3,7 @@ */ #include "pass-through.h" +#include "pci.h" #include "pci/header.h" #include "pci/pci.h" @@ -40,9 +41,11 @@ void intel_pch_init(PCIBus *bus) did = pt_pci_host_read(pci_dev_1f, PCI_DEVICE_ID, 2); rid = pt_pci_host_read(pci_dev_1f, PCI_REVISION, 1); - if ( vid == PCI_VENDOR_ID_INTEL ) - pci_bridge_init(bus, PCI_DEVFN(0x1f, 0), vid, did, rid, - pch_map_irq, "intel_bridge_1f"); + if (vid == PCI_VENDOR_ID_INTEL) { + pci_isa_bridge_init(bus, PCI_DEVFN(0x1f, 0), vid, did, rid, + pch_map_irq, "intel_bridge_1f"); + + } } uint32_t igd_read_opregion(struct pt_dev *pci_dev) -- generated by git-patchbot for /home/xen/git/qemu-xen-unstable.git _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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