From eee326024e0e19a2bf0fddb2ebbf5bbdae282459 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Mon, 16 Mar 2015 19:57:06 +0000 Subject: ArmVirtualizationPkg/ArmVirtualizationQemu: include XHCI driver The "virt" machine type of qemu-system-(arm|aarch64) had no PCIe support prior to qemu commit 4ab29b82 arm: Add PCIe host bridge in virt machine With that commit, the "virt" board acquired the capability to expose an XHCI controller. Using a USB keyboard as example, the command line options were -device nec-usb-xhci -device usb-kbd However, due to a slight XHCI emulation bug in QEMU -- dating back to several years earlier -- edk2's XHCI driver would encounter a failed ASSERT(). This emulation problem has been fixed in QEMU commit aa685789 xhci: generate a Transfer Event for each Transfer TRB with the IOC bit set and now edk2's XHCI driver works well on QEMU's "nec-usb-xhci" device. Let's enable the driver in ArmVirtualizationQemu, as XHCI emulation is reportedly more virtualization-friendly than EHCI, consuming less CPU. (ArmVirtualizationXen is not modified because it includes no USB-related drivers at all.) This patch should not regress existing QEMU command lines (ie. expose the failed ASSERT()) because QEMU's "-device nec-usb-xhci" has never before resulted in USB devices that worked with edk2 firmware builds, hence users have never had a reason to add that option. Now that they learn about XHCI support in ArmVirtualizationQemu by reading this commit message, they (or their packagers) will also know to update qemu to aa685789 or later (in practice that means the upcoming 2.3 release), at least if they want to use '-device nec-usb-xhci' with edk2, for the first time ever. Cc: Leif Lindholm Cc: Ard Biesheuvel Cc: Alexander Graf Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek Reviewed-by: Ard Biesheuvel Reviewed-by: Leif Lindholm git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17053 6f19259b-4bc3-4df7-8a09-765794883524 --- ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc | 1 + ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.fdf | 1 + 2 files changed, 2 insertions(+) diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc index 0f064af1b5..07ae63ada7 100644 --- a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc +++ b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.dsc @@ -338,5 +338,6 @@ # MdeModulePkg/Bus/Pci/UhciDxe/UhciDxe.inf MdeModulePkg/Bus/Pci/EhciDxe/EhciDxe.inf + MdeModulePkg/Bus/Pci/XhciDxe/XhciDxe.inf MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBusDxe.inf MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf diff --git a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.fdf b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.fdf index 1f5d53073d..e0ec44bf3f 100644 --- a/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.fdf +++ b/ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationQemu.fdf @@ -215,6 +215,7 @@ READ_LOCK_STATUS = TRUE # INF MdeModulePkg/Bus/Pci/UhciDxe/UhciDxe.inf INF MdeModulePkg/Bus/Pci/EhciDxe/EhciDxe.inf + INF MdeModulePkg/Bus/Pci/XhciDxe/XhciDxe.inf INF MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBusDxe.inf INF MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf -- cgit v1.2.3