kernel/drivers/gpu/drm/tegra/gem.c, branch linux-4.17.y

drm/tegra: prime: Implement ->{begin,end}_cpu_access()

2018-03-16T23:04:20Z

These callbacks allow the exporter to swap in and pin the backing storage for buffers as well as invalidate the cache in preparation for accessing the buffer from the CPU, and flush the cache and unpin the backing storage when the CPU is done modifying the buffer. Signed-off-by: Thierry Reding

drm/tegra: gem: Map pages via the DMA API

2018-03-16T23:03:54Z

When allocating pages, map them with the DMA API in order to invalidate caches. This is the correct usage of the API and works just as well as faking up the SG table and using the dma_sync_sg_for_device() function. Signed-off-by: Thierry Reding

drm/tegra: gem: Make __tegra_gem_mmap() available more widely

2018-03-08T13:38:30Z

This function allows mapping a GEM object into a virtual memory address space, which makes it useful outside of the GEM code. While at it, rename the function so it doesn't clash with the function that implements the DRM_TEGRA_GEM_MMAP IOCTL. Signed-off-by: Thierry Reding

drm/tegra: gem: Correct iommu_map_sg() error checking

2017-12-21T13:52:39Z

iommu_map_sg() doesn't return a error value, but a size of the requested IOMMU mapping or zero in case of error. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

Merge tag 'drm/tegra/for-4.14-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

2017-08-21T07:37:33Z

drm/tegra: Changes for v4.14-rc1 This contains a couple of fixes and improvements for host1x, with some preparatory work for Tegra186 support. The remainder is cleanup and minor bugfixes for Tegra DRM along with enhancements to debuggability. There have also been some enhancements to the kernel interfaces for host1x job submissions and support for mmap'ing PRIME buffers directly, all of which get the interfaces very close to ready for serious work. * tag 'drm/tegra/for-4.14-rc1' of git://anongit.freedesktop.org/tegra/linux: (21 commits) drm/tegra: Prevent BOs from being freed during job submission drm/tegra: gem: Implement mmap() for PRIME buffers drm/tegra: Support render node drm/tegra: sor: Trace register accesses drm/tegra: dpaux: Trace register accesses drm/tegra: dsi: Trace register accesses drm/tegra: hdmi: Trace register accesses drm/tegra: dc: Trace register accesses drm/tegra: sor: Use unsigned int for register offsets drm/tegra: hdmi: Use unsigned int for register offsets drm/tegra: dsi: Use unsigned int for register offsets drm/tegra: dpaux: Use unsigned int for register offsets drm/tegra: dc: Use unsigned int for register offsets drm/tegra: Fix NULL deref in debugfs/iova drm/tegra: switch to drm_*_get(), drm_*_put() helpers drm/tegra: Set MODULE_FIRMWARE for the VIC drm/tegra: Add CONFIG_OF dependency gpu: host1x: Support sub-devices recursively gpu: host1x: fix error return code in host1x_probe() gpu: host1x: Fix bitshift/mask multipliers ...

drm/tegra: gem: Implement mmap() for PRIME buffers

2017-08-17T15:57:18Z

The mapping of PRIME buffers can reuse much of the GEM mapping code, so extract the common bits into a new tegra_gem_mmap() helper. Reviewed-by: Chris Wilson Signed-off-by: Thierry Reding

drm/tegra: switch to drm__get(), drm__put() helpers

2017-08-17T15:57:09Z

Use drm_*_get() and drm_*_put() helpers instead of drm_*_reference() and drm_*_unreference() helpers. drm_*_reference() and drm_*_unreference() functions are just compatibility alias for drm_*_get() and drm_*_put() and should not be used by new code. So convert all users of compatibility functions to use the new APIs. Generated by: scripts/coccinelle/api/drm-get-put.cocci Signed-off-by: Cihangir Akturk Signed-off-by: Thierry Reding

drm/tegra: Use .dumb_map_offset and .dumb_destroy defaults

2017-08-16T18:13:48Z

This driver can use the drm_driver.dumb_destroy and drm_driver.dumb_map_offset defaults, so no need to set them. Cc: Thierry Reding Signed-off-by: Noralf Trønnes Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/1502034068-51384-7-git-send-email-noralf@tronnes.org

drm/tegra: Check for malformed offsets and sizes in the 'submit' IOCTL

2017-06-15T12:16:07Z

If commands buffer claims a number of words that is higher than its BO can fit, a kernel OOPS will be fired on the out-of-bounds BO access. This was triggered by an opentegra Xorg driver that erroneously pushed too many commands to the pushbuf. The CDMA commands buffer address is 4 bytes aligned, so check its alignment. The maximum number of the CDMA gather fetches is 16383, add a check for it. Add a sanity check for the relocations in a same way. [ 46.829393] Unable to handle kernel paging request at virtual address f09b2000 ... [] (host1x_job_pin) from [] (tegra_drm_submit+0x474/0x510) [] (tegra_drm_submit) from [] (tegra_submit+0x50/0x6c) [] (tegra_submit) from [] (drm_ioctl+0x1e4/0x3ec) [] (drm_ioctl) from [] (do_vfs_ioctl+0x9c/0x8e4) [] (do_vfs_ioctl) from [] (SyS_ioctl+0x34/0x5c) [] (SyS_ioctl) from [] (ret_fast_syscall+0x0/0x3c) Signed-off-by: Dmitry Osipenko Reviewed-by: Erik Faye-Lund Reviewed-by: Mikko Perttunen Signed-off-by: Thierry Reding

Merge tag 'drm/tegra/for-4.12-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

2017-05-05T01:47:01Z

drm/tegra: Changes for v4.12-rc1 This contains various fixes to the host1x driver as well as a plug for a leak of kernel pointers to userspace. A fairly big addition this time around is the Video Image Composer (VIC) support that can be used to accelerate some 2D and image compositing operations. Furthermore the driver now supports FB modifiers, so we no longer rely on a custom IOCTL to set those. Finally this contains a few preparatory patches for Tegra186 support which unfortunately didn't quite make it this time, but will hopefully be ready for v4.13. * tag 'drm/tegra/for-4.12-rc1' of git://anongit.freedesktop.org/tegra/linux: gpu: host1x: Fix host1x driver shutdown gpu: host1x: Support module reset gpu: host1x: Sort includes alphabetically drm/tegra: Add VIC support dt-bindings: Add bindings for the Tegra VIC drm/tegra: Add falcon helper library drm/tegra: Add Tegra DRM allocation API drm/tegra: Add tiling FB modifiers drm/tegra: Don't leak kernel pointer to userspace drm/tegra: Protect IOMMU operations by mutex drm/tegra: Enable IOVA API when IOMMU support is enabled gpu: host1x: Add IOMMU support gpu: host1x: Fix potential out-of-bounds access iommu/iova: Fix compile error with CONFIG_IOMMU_IOVA=m iommu: Add dummy implementations for !IOMMU_IOVA MAINTAINERS: Add related headers to IOMMU section iommu/iova: Consolidate code for adding new node to iovad domain rbtree