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path: root/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
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* drm/exynos: change file license to GPLInki Dae2013-01-041-18/+4
| | | | | | | | | | | This patch changes file license to GPL Most of exynos files had been copied from some random file and not updated correctly. So this patch corrects the file license. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: fix flags in dma buf exportingSeung-Woo Kim2013-01-041-1/+1
| | | | | | | | This patch fixes flags passed to dma buf exporting. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Kyungmin.park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
* drm/exynos: add dmabuf attach/detach callbacks.Inki Dae2012-12-131-31/+73
| | | | | | | | | | | | | | | | With this patch, When dma_buf_unmap_attachment is called, the pages of sgt aren't unmapped from iommu table. Instead, when dma_buf_detach is called, that would be done. And also removes exynos_get_sgt function used to get clone sgt and uses attachment's sgt instead. This patch would resolve performance deterioration issue when v4l2-based driver is using the buffer imported from gem. This change is derived from videobuf2-dma-contig.c Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: remove 'pages' and 'page_size' elements in exynos gem bufferPrathyush K2012-12-051-2/+1
| | | | | | | | | | | | | | | | | | | | Changelog v2: Removed redundant check for invalid sgl. Added check for valid page_offset in the beginning of exynos_drm_gem_map_buf. Changelog v1: The 'pages' structure is not required since we can use the 'sgt'. Even for CONTIG buffers, a SGT is created (which will have just one sgl). This SGT can be used during mmap instead of 'pages'. The 'page_size' element of the structure is also not used anywhere and is removed. This patch also fixes a memory leak where the 'pages' structure was being allocated during gem buffer allocation but not being freed during deallocate. Signed-off-by: Prathyush K <prathyush.k@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: remove unnecessary sg_alloc_table callPrathyush K2012-12-041-7/+1
| | | | | | | | | | The function dma_get_sgtable will allocate a sg table internally so it is not necessary to allocate a sg table before it. The unnecessary 'sg_alloc_table' call is removed. Signed-off-by: Prathyush K <prathyush.k@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: add iommu support for exynos drm frameworkInki Dae2012-11-291-50/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changelog v4: - fix condition to drm_iommu_detach_device funtion. Changelog v3: - add dma_parms->max_segment_size setting of drm_device->dev. - use devm_kzalloc instead of kzalloc. Changelog v2: - fix iommu attach condition. . check archdata.dma_ops of drm device instead of subdrv device's one. - code clean to exynos_drm_iommu.c file. . remove '#ifdef CONFIG_ARM_DMA_USE_IOMMU' from exynos_drm_iommu.c and add it to driver/gpu/drm/exynos/Kconfig. Changelog v1: This patch adds iommu support for exynos drm framework with dma mapping api. In this patch, we used dma mapping api to allocate physical memory and maps it with iommu table and removed some existing codes and added new some codes for iommu support. GEM allocation requires one device object to use dma mapping api so this patch uses one iommu mapping for all sub drivers. In other words, all sub drivers have same iommu mapping. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/David Howells2012-10-021-2/+2
| | | | | | | | | | | Convert #include "..." to #include <path/...> in drivers/gpu/. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
* UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.David Howells2012-10-021-1/+0
| | | | | | | | | | | | | | | | | | | | | Remove redundant DRM UAPI header #inclusions from drivers/gpu/. Remove redundant #inclusions of core DRM UAPI headers (drm.h, drm_mode.h and drm_sarea.h). They are now #included via drmP.h and drm_crtc.h via a preceding patch. Without this patch and the patch to make include the UAPI headers from the core headers, after the UAPI split, the DRM C sources cannot find these UAPI headers because the DRM code relies on specific -I flags to make #include "..." work on headers in include/drm/ - but that does not work after the UAPI split without adding more -I flags. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
* drm/exynos: add dummy support for dmabuf-mmapTomasz Stanislawski2012-09-131-0/+7
| | | | | | | | | This patch adds a stub function for DMABUF mmap. This allows to export a DMABUF. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
* drm/exynos: set buffer type from exporter.Inki Dae2012-07-271-7/+20
| | | | | | | | | when fd is imported to gem, whether the memory type from exporter is contigous or not should be set to gem flag so that drm-based driver can aware of the memory type. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: check for null in return value of dma_buf_map_attachment()Subash Patel2012-07-271-1/+1
| | | | | | | | | | dma_buf_map_attachment() can return NULL and valid sg as return value. Hence the check for the returned scatter-gather must be using the inline function IS_ERR_OR_NULL() in place of IS_ERR() Signed-off-by: Subash Patel <subash.ramaswamy@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: return NULL if exynos_pages_to_sg failsSubash Patel2012-07-271-0/+4
| | | | | | | | | | | exynos_pages_to_sg() internally calls sg_kmalloc() which can return no pages when the system is under high memory crunch. One such instance is chromeos-install in the chromeos. This patch adds check for the return value of the function in subject to return NULL on failure. Signed-off-by: Subash Patel <subash.ramaswamy@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
* drm/exynos: added drm prime feature.Inki Dae2012-05-081-0/+272
this patch adds exynos specific codes for DRM Prime feature. with this patch, user application can get file descriptor from gem handle through DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl command(export) and also gem handle from file descriptor through DRM_IOCTL_PRIME_FD_TO_HANLDE(import) ioctl command. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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