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Re: [Qemu-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specifi
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough |
Date: |
Fri, 22 Aug 2014 20:23:27 +0200 |
On Thu, Aug 21, 2014 at 09:28:28AM +0800, Tiejun Chen wrote:
> Currenjly this ISA bridge should be fixed at 1f.0, and pass the
> real vendor/device ids as the driver expect.
>
> Signed-off-by: Tiejun Chen <address@hidden>
> ---
> hw/i386/pc_piix.c | 24 +++++++++++++++++++++++-
> 1 file changed, 23 insertions(+), 1 deletion(-)
>
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 7710724..b131fa3 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -50,7 +50,8 @@
> #include "cpu.h"
> #include "qemu/error-report.h"
> #ifdef CONFIG_XEN
> -# include <xen/hvm/hvm_info_table.h>
> +#include <xen/hvm/hvm_info_table.h>
> +#include <hw/xen/xen-host-pci-device.h>
> #endif
>
> #define MAX_IDE_BUS 2
> @@ -463,6 +464,26 @@ static void pc_xen_hvm_init(MachineState *machine)
> }
> }
>
> +static void xen_igd_passthrough_isa_bridge_create(PCIBus *bus)
> +{
> + struct PCIDevice *dev;
> + XenHostPCIDevice hdev;
> + int r = 0;
> +
> + /* This shoudl be fixed at 1f.0 then pass vendor/device ids.
> + */
> + dev = pci_create_simple(bus, PCI_DEVFN(0x1f, 0),
> + "xen-igd-passthrough-isa-bridge");
> + if (dev) {
> + r = xen_host_pci_device_get(&hdev, 0, 0, PCI_DEVFN(0x1f, 0), 0);
> + if (!r) {
> + pci_config_set_vendor_id(dev->config, hdev.vendor_id);
No need to override vendor ID, it's intel anyway.
> + pci_config_set_device_id(dev->config, hdev.device_id);
Please don't do this directly.
Instead, add a property specifying device ID.
Xen can then set this property in Xen code.
> + } else
> + fprintf(stderr, "xen set xen-igd-passthrough-isa-bridge
> failed\n");
> + }
> +}
> +
> static void xen_igd_passthrough_pc_hvm_init(MachineState *machine)
> {
> PCIBus *bus;
> @@ -472,6 +493,7 @@ static void xen_igd_passthrough_pc_hvm_init(MachineState
> *machine)
> bus = pci_find_primary_bus();
> if (bus != NULL) {
> pci_create_simple(bus, -1, "xen-platform");
> + xen_igd_passthrough_isa_bridge_create(bus);
> }
> }
> #endif
> --
> 1.9.1
- [Qemu-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, (continued)
- [Qemu-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Tiejun Chen, 2014/08/20
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Konrad Rzeszutek Wilk, 2014/08/21
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/21
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Michael S. Tsirkin, 2014/08/24
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/25
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/25
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/27
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/28
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Michael S. Tsirkin, 2014/08/31
- Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough, Chen, Tiejun, 2014/08/31
Re: [Qemu-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough,
Michael S. Tsirkin <=