Commit d61fc96f authored by Gerd Hoffmann's avatar Gerd Hoffmann Committed by Alex Williamson

sample: vfio mdev display - host device

Simple framebuffer display, demo-ing the vfio region display interface
(VFIO_GFX_PLANE_TYPE_REGION).
Signed-off-by: 's avatarGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: 's avatarAlex Williamson <alex.williamson@redhat.com>
parent 48d8476b
......@@ -115,6 +115,14 @@ config SAMPLE_VFIO_MDEV_MTTY
Build a virtual tty sample driver for use as a VFIO
mediated device
config SAMPLE_VFIO_MDEV_MDPY
tristate "Build VFIO mdpy example mediated device sample code -- loadable modules only"
depends on VFIO_MDEV_DEVICE && m
help
Build a virtual display sample driver for use as a VFIO
mediated device. It is a simple framebuffer and supports
the region display interface (VFIO_GFX_PLANE_TYPE_REGION).
config SAMPLE_STATX
bool "Build example extended-stat using code"
depends on BROKEN
......
obj-$(CONFIG_SAMPLE_VFIO_MDEV_MTTY) += mtty.o
obj-$(CONFIG_SAMPLE_VFIO_MDEV_MDPY) += mdpy.o
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Simple pci display device.
*
* Framebuffer memory is pci bar 0.
* Configuration (read-only) is in pci config space.
* Format field uses drm fourcc codes.
* ATM only DRM_FORMAT_XRGB8888 is supported.
*/
/* pci ids */
#define MDPY_PCI_VENDOR_ID 0x1b36 /* redhat */
#define MDPY_PCI_DEVICE_ID 0x000f
#define MDPY_PCI_SUBVENDOR_ID PCI_SUBVENDOR_ID_REDHAT_QUMRANET
#define MDPY_PCI_SUBDEVICE_ID PCI_SUBDEVICE_ID_QEMU
/* pci cfg space offsets for fb config (dword) */
#define MDPY_VENDORCAP_OFFSET 0x40
#define MDPY_VENDORCAP_SIZE 0x10
#define MDPY_FORMAT_OFFSET (MDPY_VENDORCAP_OFFSET + 0x04)
#define MDPY_WIDTH_OFFSET (MDPY_VENDORCAP_OFFSET + 0x08)
#define MDPY_HEIGHT_OFFSET (MDPY_VENDORCAP_OFFSET + 0x0c)
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