From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53223) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WGjvE-0000ve-85 for qemu-devel@nongnu.org; Fri, 21 Feb 2014 01:49:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WGjv5-0007cs-Sh for qemu-devel@nongnu.org; Fri, 21 Feb 2014 01:49:20 -0500 Received: from mga02.intel.com ([134.134.136.20]:48867) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WGjv5-0007cJ-No for qemu-devel@nongnu.org; Fri, 21 Feb 2014 01:49:11 -0500 From: Yang Zhang Date: Fri, 21 Feb 2014 14:44:11 +0800 Message-Id: <1392965053-1069-4-git-send-email-yang.z.zhang@intel.com> In-Reply-To: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> References: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> Subject: [Qemu-devel] [PATCH 3/5] xen, gfx passthrough: create intel isa bridge List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, xen-devel@lists.xensource.com, stefano.stabellini@eu.citrix.com, allen.m.kay@intel.com, weidong.han@intel.com, jean.guyader@eu.citrix.com, Yang Zhang , anthony@codemonkey.ws, anthony.perard@citrix.com From: Yang Zhang ISA bridge is needed since Intel gfx drive will probe it instead of Dev31:Fun0 to make graphics device passthrough work easy for VMM, that only need to expose ISA bridge to let driver know the real hardware underneath. The original patch is from Allen Kay [allen.m.kay@intel.com] Signed-off-by: Yang Zhang Cc: Allen Kay --- hw/xen/xen_pt_graphics.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 71 insertions(+), 0 deletions(-) diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c index 9ad8a74..54f16cf 100644 --- a/hw/xen/xen_pt_graphics.c +++ b/hw/xen/xen_pt_graphics.c @@ -162,3 +162,74 @@ out: free(bios); return rc; } + +static uint32_t isa_bridge_read_config(PCIDevice *d, uint32_t addr, int len) +{ + uint32_t v; + + v = pci_default_read_config(d, addr, len); + + return v; +} + +static void isa_bridge_write_config(PCIDevice *d, uint32_t addr, uint32_t v, + int len) +{ + pci_default_write_config(d, addr, v, len); + + return; +} + +static void isa_bridge_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->config_read = isa_bridge_read_config; + k->config_write = isa_bridge_write_config; + + return; +}; + +typedef struct { + PCIDevice dev; +} ISABridgeState; + +static TypeInfo isa_bridge_info = { + .name = "inte-pch-isa-bridge", + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(ISABridgeState), + .class_init = isa_bridge_class_init, +}; + +static void xen_pt_graphics_register_types(void) +{ + type_register_static(&isa_bridge_info); +} + +type_init(xen_pt_graphics_register_types) + +static int create_pch_isa_bridge(PCIBus *bus, XenHostPCIDevice *hdev) +{ + struct PCIDevice *dev; + + char rid; + + dev = pci_create(bus, PCI_DEVFN(0x1f, 0), "inte-pch-isa-bridge"); + if (!dev) { + XEN_PT_LOG(dev, "fail to create PCH ISA bridge.\n"); + return -1; + } + + qdev_init_nofail(&dev->qdev); + + pci_config_set_vendor_id(dev->config, hdev->vendor_id); + pci_config_set_device_id(dev->config, hdev->device_id); + + xen_host_pci_get_block(hdev, PCI_REVISION_ID, (uint8_t *)&rid, 1); + + pci_config_set_revision(dev->config, rid); + pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_ISA); + + XEN_PT_LOG(dev, "Intel PCH ISA bridge is created.\n"); + return 0; +} -- 1.7.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yang Zhang Subject: [PATCH 3/5] xen, gfx passthrough: create intel isa bridge Date: Fri, 21 Feb 2014 14:44:11 +0800 Message-ID: <1392965053-1069-4-git-send-email-yang.z.zhang@intel.com> References: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> Return-path: In-Reply-To: <1392965053-1069-1-git-send-email-yang.z.zhang@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, xen-devel@lists.xensource.com, stefano.stabellini@eu.citrix.com, allen.m.kay@intel.com, weidong.han@intel.com, jean.guyader@eu.citrix.com, Yang Zhang , anthony@codemonkey.ws, anthony.perard@citrix.com List-Id: xen-devel@lists.xenproject.org From: Yang Zhang ISA bridge is needed since Intel gfx drive will probe it instead of Dev31:Fun0 to make graphics device passthrough work easy for VMM, that only need to expose ISA bridge to let driver know the real hardware underneath. The original patch is from Allen Kay [allen.m.kay@intel.com] Signed-off-by: Yang Zhang Cc: Allen Kay --- hw/xen/xen_pt_graphics.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 71 insertions(+), 0 deletions(-) diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c index 9ad8a74..54f16cf 100644 --- a/hw/xen/xen_pt_graphics.c +++ b/hw/xen/xen_pt_graphics.c @@ -162,3 +162,74 @@ out: free(bios); return rc; } + +static uint32_t isa_bridge_read_config(PCIDevice *d, uint32_t addr, int len) +{ + uint32_t v; + + v = pci_default_read_config(d, addr, len); + + return v; +} + +static void isa_bridge_write_config(PCIDevice *d, uint32_t addr, uint32_t v, + int len) +{ + pci_default_write_config(d, addr, v, len); + + return; +} + +static void isa_bridge_class_init(ObjectClass *klass, void *data) +{ + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->config_read = isa_bridge_read_config; + k->config_write = isa_bridge_write_config; + + return; +}; + +typedef struct { + PCIDevice dev; +} ISABridgeState; + +static TypeInfo isa_bridge_info = { + .name = "inte-pch-isa-bridge", + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(ISABridgeState), + .class_init = isa_bridge_class_init, +}; + +static void xen_pt_graphics_register_types(void) +{ + type_register_static(&isa_bridge_info); +} + +type_init(xen_pt_graphics_register_types) + +static int create_pch_isa_bridge(PCIBus *bus, XenHostPCIDevice *hdev) +{ + struct PCIDevice *dev; + + char rid; + + dev = pci_create(bus, PCI_DEVFN(0x1f, 0), "inte-pch-isa-bridge"); + if (!dev) { + XEN_PT_LOG(dev, "fail to create PCH ISA bridge.\n"); + return -1; + } + + qdev_init_nofail(&dev->qdev); + + pci_config_set_vendor_id(dev->config, hdev->vendor_id); + pci_config_set_device_id(dev->config, hdev->device_id); + + xen_host_pci_get_block(hdev, PCI_REVISION_ID, (uint8_t *)&rid, 1); + + pci_config_set_revision(dev->config, rid); + pci_config_set_class(dev->config, PCI_CLASS_BRIDGE_ISA); + + XEN_PT_LOG(dev, "Intel PCH ISA bridge is created.\n"); + return 0; +} -- 1.7.1