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lib: Add helper kmstest_dumb_map_buffer

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Which basically just calls DRM_IOCTL_MODE_MAP_DUMB and is similar to
gem_mmap__gtt().

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Tomeu Vizoso 2016-03-07 16:37:36 +01:00 committed by Daniel Stone
parent dc84e7d6ad
commit fb66a5df93
2 changed files with 19 additions and 0 deletions
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16
lib/igt_kms.c
View File

@ -462,6 +462,22 @@ uint32_t kmstest_dumb_create(int fd, int width, int height, int bpp,
return create.handle; return create.handle;
} }
void *kmstest_dumb_map_buffer(int fd, uint32_t handle, uint64_t size,
unsigned prot)
{
struct drm_mode_map_dumb arg = {};
void *ptr;
arg.handle = handle;
do_ioctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
ptr = mmap(NULL, size, prot, MAP_SHARED, fd, arg.offset);
igt_assert(ptr != MAP_FAILED);
return ptr;
}
/* /*
* Returns: the previous mode, or KD_GRAPHICS if no /dev/tty0 was * Returns: the previous mode, or KD_GRAPHICS if no /dev/tty0 was
* found and nothing was done. * found and nothing was done.

3
lib/igt_kms.h
View File

@ -178,6 +178,9 @@ uint32_t kmstest_find_crtc_for_connector(int fd, drmModeRes *res,
uint32_t kmstest_dumb_create(int fd, int width, int height, int bpp, uint32_t kmstest_dumb_create(int fd, int width, int height, int bpp,
unsigned *stride, unsigned *size); unsigned *stride, unsigned *size);
void *kmstest_dumb_map_buffer(int fd, uint32_t handle, uint64_t size,
unsigned prot);
/* /*
* A small modeset API * A small modeset API
*/ */