github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-26 11:14:03 +00:00
Code Issues Projects Releases Wiki Activity

dm: virtio-gpu: VGA compability support

Browse Source 
Legacy VGA & VBE interface as a common interface is supported by
many legacy and modern OS. Many installer of OS distribution use
this interface to display the GUI of installer when setup a refresh
new installation on bare-metal. Besides, Windows OS always use this
interface to display it's BSOD, recovery mode & safe mode GUI. It
is need because Windows don't include virtio-gpu driver as their
in-box driver, VGA interface will be used before the virtio-gpu
driver been installed.
To be compatiable with the PCI bar layout of legacy VGA, the layout
is refined to meet with the requirement of legacy VGA and modern
virtio-gpu.

BAR0: VGA Framebuffer memory, 16 MB in size.
BAR2: MMIO Space
  [0x0000~0x03ff] EDID data blob
  [0x0400~0x041f] VGA ioports registers
  [0x0500~0x0516] bochs display interface registers
  [0x1000~0x17ff] Virtio common configuration registers
  [0x1800~0x1fff] Virtio ISR state registers
  [0x2000~0x2fff] Virtio device configuration registers
  [0x3000~0x3fff] Virtio notification registers
BAR4: MSI/MSI-X
BAR5: Virtio port io

Tracked-On: #7210
Signed-off-by: Sun Peng <peng.p.sun@linux.intel.com>
Reviewed-by: Zhao, yakui <yakui.zhao@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Sun, Peng
2022-02-25 23:04:58 +08:00
committed by acrnsi-robot
parent f2cfa761ae
commit 1ed96bfbf8
12 changed files with 2082 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
devicemodel/include/gc.h
View File

@@ -31,8 +31,6 @@
#include "types.h"
struct gfx_ctx;
struct gfx_ctx_image {
int vgamode;
int width;
@@ -40,6 +38,15 @@ struct gfx_ctx_image {
uint32_t *data;
};
struct gfx_ctx {
struct gfx_ctx_image *gc_image;
int raw;
};
struct gfx_ctx_image *gc_get_image(struct gfx_ctx *gc);
struct gfx_ctx *gc_init(int width, int height, void *fbaddr);
void gc_deinit(struct gfx_ctx *gc);
void gc_set_fbaddr(struct gfx_ctx *gc, void *fbaddr);
void gc_resize(struct gfx_ctx *gc, int width, int height);
#endif /* _GC_H_ */