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| author | Rob Clark <robdclark@gmail.com> | 2015-03-03 15:04:25 -0500 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2015-04-01 19:29:33 -0400 |
| commit | 072f1f9168ed67d6ddc94bb76b1dfc04795062b4 (patch) | |
| tree | b817aa6b4980b0fedc19e34007429a7b340cbc72 /drivers/gpu/drm/msm/msm_gem.h | |
| parent | 5bf9c0b614542d69fb9a8681a0411715cc3e8ba8 (diff) | |
| download | lwn-072f1f9168ed67d6ddc94bb76b1dfc04795062b4.tar.gz lwn-072f1f9168ed67d6ddc94bb76b1dfc04795062b4.zip | |
drm/msm: add support for "stolen" mem
Add support to use the VRAM carveout (if specified in dtb) for fbdev
scanout buffer. This allows drm/msm to take over a bootloader splash-
screen, and avoids corruption on screen that results if the kernel uses
memory that is still being scanned out for itself.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 8fbbd0594c46..85d481e29276 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -21,6 +21,9 @@ #include <linux/reservation.h> #include "msm_drv.h" +/* Additional internal-use only BO flags: */ +#define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */ + struct msm_gem_object { struct drm_gem_object base; @@ -59,7 +62,7 @@ struct msm_gem_object { struct reservation_object _resv; /* For physically contiguous buffers. Used when we don't have - * an IOMMU. + * an IOMMU. Also used for stolen/splashscreen buffer. */ struct drm_mm_node *vram_node; }; |