search for: drm_gem_vram_kmap

The mgag200 driver establishes several memory mappings for frame buffers and cursors. This patch converts the driver to use the equivalent drm_gem_vram_kmap() functions. It removes the dependencies on TTM and cleans up the code. --- drivers/gpu/drm/mgag200/mgag200_cursor.c | 35 +++++++++++------------- drivers/gpu/drm/mgag200/mgag200_drv.h | 1 - drivers/gpu/drm/mgag200/mgag200_fb.c | 22 +++++++++------ drivers/gpu/drm/mgag200/mgag200_mode.c...

...n future updates. v4: * cleanups from checkpatch.pl * removed several fixed-size types from interfaces * DRM_VRAM_HELPER now selects DRM_TTM * remove separate config option for GEM VRAM v2: * rename to |struct drm_gem_vram_object| * move drm_is_gem_ttm() to a later patch in the series * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * documentation fixes Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- Documentation/gpu/drm-mm.rst | 15 + drivers/gpu/drm/Kconfig | 7 + drivers/g...

...tion from each other; except for the names of several data types. The helpers are currently build with TTM, but this is considered an implementation detail and may change in future updates. v2: * rename to |struct drm_gem_vram_object| * move drm_is_gem_ttm() to a later patch in the series * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * documentation fixes Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- Documentation/gpu/drm-mm.rst | 12 + drivers/gpu/drm/Kconfig | 13 + drivers/g...

...; - mfbdev->x2 = x2; - mfbdev->y1 = y; - mfbdev->y2 = y2; - spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); - return; - } - - mfbdev->x1 = mfbdev->y1 = INT_MAX; - mfbdev->x2 = mfbdev->y2 = 0; - spin_unlock_irqrestore(&mfbdev->dirty_lock, flags); - - dst = drm_gem_vram_kmap(gbo, false, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } else if (!dst) { - dst = drm_gem_vram_kmap(gbo, true, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } - unmap = true; - } - - for...

...e names of several data types. The helpers are > currently build with TTM, but this is considered an implementation > detail and may change in future updates. > > v2: > * rename to |struct drm_gem_vram_object| > * move drm_is_gem_ttm() to a later patch in the series > * add drm_gem_vram_kmap_at() > * return is_iomem from kmap functions > * redefine TTM placement flags for public interface > * documentation fixes > > Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> > --- > Documentation/gpu/drm-mm.rst | 12 + > drivers/gpu/drm/Kco...

...e names of several data types. The helpers are > currently build with TTM, but this is considered an implementation > detail and may change in future updates. > > v2: > * rename to |struct drm_gem_vram_object| > * move drm_is_gem_ttm() to a later patch in the series > * add drm_gem_vram_kmap_at() > * return is_iomem from kmap functions > * redefine TTM placement flags for public interface > * documentation fixes > > Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> > --- > Documentation/gpu/drm-mm.rst | 12 + > drivers/gpu/drm/Kco...

...; - afbdev->x2 = x2; - afbdev->y1 = y; - afbdev->y2 = y2; - spin_unlock_irqrestore(&afbdev->dirty_lock, flags); - return; - } - - afbdev->x1 = afbdev->y1 = INT_MAX; - afbdev->x2 = afbdev->y2 = 0; - spin_unlock_irqrestore(&afbdev->dirty_lock, flags); - - dst = drm_gem_vram_kmap(gbo, false, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } else if (!dst) { - dst = drm_gem_vram_kmap(gbo, true, NULL); - if (IS_ERR(dst)) { - DRM_ERROR("failed to kmap fb updates\n"); - goto out; - } - unmap = true; - } - - for...

.... v3: * share VRAM MM callback structure among drivers * move VRAM MM instances to drm_device and share rsp. code v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (19): drm: Add |struct drm_gem_vram_object| and helpers d...

DRM client buffers are permanently mapped throughout their lifetime. This prevents us from using generic framebuffer emulation for devices with small dedicated video memory, such as ast or mgag200. With fb buffers permanently mapped, such devices often won't have enougth space left to display other content (e.g., X11). This patch set introduces unmappable DRM client buffers for framebuffer

DRM client buffers are permanently mapped throughout their lifetime. This prevents us from using generic framebuffer emulation for devices with small dedicated video memory, such as ast or mgag200. With fb buffers permanently mapped, such devices often won't have enougth space left to display other content (e.g., X11). This patch set introduces unmappable DRM client buffers for framebuffer

DRM client buffers are permanently mapped throughout their lifetime. This prevents us from using generic framebuffer emulation for devices with small dedicated video memory, such as ast or mgag200. With fb buffers permanently mapped, such devices often won't have enough space left to display other content (e.g., X11). This patch set introduces unmappable DRM client buffers for framebuffer

DRM client buffers are permanently mapped throughout their lifetime. This prevents us from using generic framebuffer emulation for devices with small dedicated video memory, such as ast or mgag200. With fb buffers permanently mapped, such devices often won't have enough space left to display other content (e.g., X11). This patch set introduces unmappable DRM client buffers for framebuffer

...ER v3: * share VRAM MM callback structure among drivers * move VRAM MM instances to drm_device and share rsp. code v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (19): drm: Add |struct drm_gem_vram_object| and helpers d...

...ER v3: * share VRAM MM callback structure among drivers * move VRAM MM instances to drm_device and share rsp. code v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (19): drm: Add |struct drm_gem_vram_object| and helpers d...

...ER v3: * share VRAM MM callback structure among drivers * move VRAM MM instances to drm_device and share rsp. code v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (20): drm: Add |struct drm_gem_vram_object| and helpers d...

...ER v3: * share VRAM MM callback structure among drivers * move VRAM MM instances to drm_device and share rsp. code v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (20): drm: Add |struct drm_gem_vram_object| and helpers d...

...implement PRIME helpers, which would allow for using the generic fbcon. The patch set is against a recent drm-tip. v2: * rename |struct drm_gem_ttm_object| to |struct drm_gem_vram_object| * rename |struct drm_simple_ttm| to |struct drm_vram_mm| * make drm_is_gem_ttm() an internal helper * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * add drm_vram_mm_mmap() helper * replace almost all of driver's TTM code with these helpers * documentation fixes Thomas Zimmermann (17): drm: Add |struct drm_gem_vram_object| and helpers d...

A kernel test bot reported a problem with the locktorture testcase that was triggered by the GEM VRAM helpers. ... [ 10.004734] RIP: 0010:ttm_bo_validate+0x41/0x141 [ttm] ... [ 10.015669] ? kvm_sched_clock_read+0x5/0xd [ 10.016157] ? get_lock_stats+0x11/0x3f [ 10.016607] drm_gem_vram_pin+0x77/0xa2 [drm_vram_helper] [ 10.017229]

A kernel test bot reported a problem with the locktorture testcase that was triggered by the GEM VRAM helpers. ... [ 10.004734] RIP: 0010:ttm_bo_validate+0x41/0x141 [ttm] ... [ 10.015669] ? kvm_sched_clock_read+0x5/0xd [ 10.016157] ? get_lock_stats+0x11/0x3f [ 10.016607] drm_gem_vram_pin+0x77/0xa2 [drm_vram_helper] [ 10.017229]