832316c704fe3d15ae6ca9a552ae80411d1bbbcd |
|
18-Sep-2014 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use drm generic mmap interface This patch removes DRM_EXYNOS_GEM_MMAP ictrl feature specific to Exynos drm and instead uses drm generic mmap. We had used the interface specific to Exynos drm to do mmap directly, not to use demand paging which maps each page with physical memory at page fault handler. We don't need the specific mmap interface because the drm generic mmap which uses vm offset manager stuff can also do mmap directly. This patch makes a userspace region to be mapped with whole physical memory region allocated by userspace request when mmap system call is requested. Changelog v2: - do not set VM_IO, VM_DONTEXPEND and VM_DONTDUMP. These flags were already set by drm_gem_mmap - do not include <linux/anon_inodes.h>, which isn't needed anymore. Signed-off-by: Inki Dae <inki.dae@samsung.com>
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d931589c01a20595d67192f075f9c84093c43c45 |
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17-Sep-2014 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: remove DRM_EXYNOS_GEM_MAP_OFFSET ioctl This interface and relevant codes aren't used anymore. Signed-off-by: Inki Dae <inki.dae@samsung.com>
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4a958d38277936427500e741d346ec784e1d23f1 |
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02-Jul-2014 |
Sachin Kamat <sachin.kamat@samsung.com> |
drm/exynos: Remove unused variable in exynos_drm_gem.c 'exynos_gem_obj' is not used in the function. Remove it. Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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122beea84bb90236b1ae545f08267af58591c21b |
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07-May-2014 |
Rahul Sharma <Rahul.Sharma@samsung.com> |
drm/exynos: allocate non-contigous buffers when iommu is enabled Allow to allocate non-contigous buffers when iommu is enabled. Currently, it tries to allocates contigous buffer which consistently fail for large buffers and then fall back to non contigous. Apart from being slow, this implementation is also very noisy and fills the screen with alloc fail logs. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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96f5421523dfdcfb67e66e0f51c4b64d2c12137c |
|
20-Dec-2013 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use a new anon file for exynos gem mmaper This patch resolves potential deadlock issue that can be incurred by changing file->f_op and filp->private_data to exynos specific mapper ops and gem object temporarily. To resolve this issue, this patch creates a new anon file dedicated to exynos specific mmaper, and making it used instead of existing one. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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c6b78bc8c884097fa7beadbfae2b5a8a7a46d4fe |
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24-Oct-2013 |
Masanari Iida <standby24x7@gmail.com> |
drm: fix typos in comment in /gpu/drm/exynos Correct spelling typo in drivers/gpu/drm/exynos Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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16eb5f4379b2097438a224381be3b4d9e56ac979 |
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02-Oct-2013 |
David Herrmann <dh.herrmann@gmail.com> |
drm: kill ->gem_init_object() and friends All drivers embed gem-objects into their own buffer objects. There is no reason to keep drm_gem_object_alloc(), gem->driver_private and ->gem_init_object() anymore. New drivers are highly encouraged to do the same. There is no benefit in allocating gem-objects separately. Cc: Dave Airlie <airlied@gmail.com> Cc: Alex Deucher <alexdeucher@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Inki Dae <inki.dae@samsung.com> Cc: Ben Skeggs <skeggsb@gmail.com> Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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3fec4532d112a4b8427ded6725a7f00d75023886 |
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22-Aug-2013 |
Vikas Sajjan <vikas.sajjan@linaro.org> |
drm/exynos: Consider fallback option to allocation fail To address the case where physically contiguous memory MAY NOT be a mandatory requirement for framebuffer for the application calling exynos_drm_gem_dumb_create, the patch adds a feature to get non physically contiguous memory for framebuffer, if physically contiguous memory allocation fails and if IOMMU is supported. Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org> Signed-off-by: Arun Kumar <arun.kk@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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38bb5253a95f2eb8cb765b7ab88aac686de6cb12 |
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19-Aug-2013 |
Sachin Kamat <sachin.kamat@linaro.org> |
drm/exynos: Remove redundant error messages kzalloc already has built-in error messages. Hence remove additional ones. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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a8e11d1c435f9d185c9f3b1981b9613a579b9999 |
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15-Aug-2013 |
Daniel Vetter <daniel.vetter@ffwll.ch> |
drm/gem: fix up flink name create race This is the 2nd attempt, I've always been a bit dissatisified with the tricky nature of the first one: http://lists.freedesktop.org/archives/dri-devel/2012-July/025451.html The issue is that the flink ioctl can race with calling gem_close on the last gem handle. In that case we'll end up with a zero handle count, but an flink name (and it's corresponding reference). Which results in a neat space leak. In my first attempt I've solved this by rechecking the handle count. But fundamentally the issue is that ->handle_count isn't your usual refcount - it can be resurrected from 0 among other things. For those special beasts atomic_t often suggest way more ordering that it actually guarantees. To prevent being tricked by those hairy semantics take the easy way out and simply protect the handle with the existing dev->object_name_lock. With that change implemented it's dead easy to fix the flink vs. gem close reace: When we try to create the name we simply have to check whether there's still officially a gem handle around and if not refuse to create the flink name. Since the handle count decrement and flink name destruction is now also protected by that lock the reace is gone and we can't ever leak the flink reference again. Outside of the drm core only the exynos driver looks at the handle count, and tbh I have no idea why (it's just for debug dmesg output luckily). I've considered inlining the drm_gem_object_handle_free, but I plan to add more name-like things (like the exported dma_buf) to this scheme, so it's clearer to leave the handle freeing in its own function. This is exercised by the new gem_flink_race i-g-t testcase, which on my snb leaks gem objects at a rate of roughly 1k objects/s. v2: Fix up the error path handling in handle_create and make it more robust by simply calling object_handle_unreference. v3: Fix up the handle_unreference logic bug - atomic_dec_and_test retursn 1 for 0. Oops. v4: Squash in inlining of drm_gem_object_handle_reference as suggested by Dave Airlie and add a note that we now have a testcase. Cc: Dave Airlie <airlied@gmail.com> Cc: Inki Dae <inki.dae@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
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43387b37fa2d0f368142b8fa8c9440da92e5381b |
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16-Jul-2013 |
Daniel Vetter <daniel.vetter@ffwll.ch> |
drm/gem: create drm_gem_dumb_destroy All the gem based kms drivers really want the same function to destroy a dumb framebuffer backing storage object. So give it to them and roll it out in all drivers. This still leaves the option open for kms drivers which don't use GEM for backing storage, but it does decently simplify matters for gem drivers. Acked-by: Inki Dae <inki.dae@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org> Cc: Ben Skeggs <skeggsb@gmail.com> Reviwed-by: Rob Clark <robdclark@gmail.com> Cc: Alex Deucher <alexdeucher@gmail.com> Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
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0de23977cfeb5b357ec884ba15417ae118ff9e9b |
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24-Jul-2013 |
David Herrmann <dh.herrmann@gmail.com> |
drm/gem: convert to new unified vma manager Use the new vma manager instead of the old hashtable. Also convert all drivers to use the new convenience helpers. This drops all the (map_list.hash.key << PAGE_SHIFT) non-sense. Locking and access-management is exactly the same as before with an additional lock inside of the vma-manager, which strictly wouldn't be needed for gem. v2: - rebase on drm-next - init nodes via drm_vma_node_reset() in drm_gem.c v3: - fix tegra v4: - remove duplicate if (drm_vma_node_has_offset()) checks - inline now trivial drm_vma_node_offset_addr() calls v5: - skip node-reset on gem-init due to kzalloc() - do not allow mapping gem-objects with offsets (backwards compat) - remove unneccessary casts Cc: Inki Dae <inki.dae@samsung.com> Cc: Rob Clark <robdclark@gmail.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@gmail.com>
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c58c1599cd5c97977c44047272b56b4db455bbba |
|
01-Jul-2013 |
YoungJun Cho <yj44.cho@samsung.com> |
drm/exynos: fix not to remain exynos_gem_obj as a leak The exynos_drm_gem_create() only calls drm_gem_object_release() when exynos_drm_alloc_buf() is failed, and exynos_gem_obj remains as a leak, which is allocated in exynos_drm_gem_init(). So this patch fixes it not to remain as a leak. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> 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>
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23f340e0314eab461d33ae91250f9b47af23918f |
|
14-Jun-2013 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: make sure to handle an error case to vm_mmap call vm_mmap function returns unsigned long so addr type should be unsigned long. a pointer or address variable is required to use unsigned long or uint64_t type for 64bits address support. So this patch makes sure that addr has unsigned long type and also exynos_drm_gem_mmap_ioctl returns correct error type. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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bca34c9a40e503e9bc6bafa45819dd55c2fd3e20 |
|
12-Jun-2013 |
YoungJun Cho <yj44.cho@samsung.com> |
drm/exynos: Remove tracking log functions This patch removes tracking log functions which were used to debug in the early development stage and are not so important as were. So remove them for code clean up. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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69961d8f2d6f30733ac85b95542ce05e796eecd7 |
|
18-Apr-2013 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: do not use generic flags to dumb This patch removes the use of dumb flags from driver. As Dave pointed out, the dumb flags are not driver specific so this should be removed from driver. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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a4f19aaab3e69f9d15cc995e3378d27c8ef4f780 |
|
11-Mar-2013 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: Add a new function to get gem buffer size This patch adds a new function to get gem buffer size. And this funtion could be used for g2d driver or others can get gem buffer size to check if the buffer is valid or not. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <inki.dae@samsung.com>
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5af9f116e6a0e1de675da979a19f95a74ce2aa2e |
|
07-Feb-2013 |
YoungJun Cho <yj44.cho@samsung.com> |
drm/exynos: fix wrong pointer access at vm close. This patch fixes wrong pointer access issue to filp->f_op and filp->private_data. The exynos_drm_gem_mmap_ioctl() changes filp->f_op and filp->private_data temporarily and restore them to use original ones in exynos_drm_gem_mmap_buffer() but there was no lock between the changing and the restoring so wrong pointer access to filp->f_op and filp->private_data was induced by vm close callback. So this patch uses mutex lock properly to resolve this issue. Signed-off-by: YoungJun Cho <yj44.cho@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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d81aecb5e680311e1f3fd71e49e6a4072d2374d2 |
|
17-Dec-2012 |
Inki Dae <daeinki@gmail.com> |
drm/exynos: change file license to GPL 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>
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4744ad2414bd890d37a99df4726be733137aa3f7 |
|
07-Dec-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use DMA_ATTR_NO_KERNEL_MAPPING attribute Changelog v3: just code cleanup. Changelog v2: fix argument to dma_mmap_attr function. - use pages instead of kvaddr because kvaddr is 0 with DMA_ATTR_NO_KERNEL_MAPPING. Changelog v1: When gem allocation is requested, kernel space mapping isn't needed. But if need, such as console framebuffer, the physical pages would be mapped with kernel space though vmap function. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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465ed6606018b56d55219b6c58a7b98793d8cbcc |
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20-Nov-2012 |
Prathyush K <prathyush.k@samsung.com> |
drm/exynos: remove 'pages' and 'page_size' elements in exynos gem buffer 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>
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5b07c66059313fc998d28cf6775fd1a8bbb034aa |
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08-Nov-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: add vm_ops to specific gem mmaper Changelog v3: use drm_file's file object instead of gem object's - gem object's file represents the shmem storage so process-unique file object should be used instead. Changelog v2: call mutex_lock before drm_vm_open_locked is called. Changelog v1: This patch makes it takes a reference to gem object when specific gem mmap is requested. For this, it sets dev->driver->gem_vm_ops to vma->vm_ops. And this patch is based on exynos-drm-next-iommu branch of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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2a3098ff6c2109557868f9f230f4725312dcb882 |
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04-Nov-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: add userptr feature for g2d module This patch adds userptr feautre for G2D module. The userptr means user space address allocated by malloc(). And the purpose of this feature is to make G2D's dma able to access the user space region. To user this feature, user should flag G2D_BUF_USRPTR to offset variable of struct drm_exynos_g2d_cmd and fill struct drm_exynos_g2d_userptr with user space address and size for it and then should set a pointer to drm_exynos_g2d_userptr object to data variable of struct drm_exynos_g2d_cmd. The last bit of offset variable is used to check if the cmdlist's buffer type is userptr or not. If userptr, the g2d driver gets user space address and size and then gets pages through get_user_pages(). (another case is counted as gem handle) Below is sample codes: static void set_cmd(struct drm_exynos_g2d_cmd *cmd, unsigned long offset, unsigned long data) { cmd->offset = offset; cmd->data = data; } static int solid_fill_test(int x, int y, unsigned long userptr) { struct drm_exynos_g2d_cmd cmd_gem[5]; struct drm_exynos_g2d_userptr g2d_userptr; unsigned int gem_nr = 0; ... g2d_userptr.userptr = userptr; g2d_userptr.size = x * y * 4; set_cmd(&cmd_gem[gem_nr++], DST_BASE_ADDR_REG | G2D_BUF_USERPTR, (unsigned long)&g2d_userptr); ... } int main(int argc, char **argv) { unsigned long addr; ... addr = malloc(x * y * 4); ... solid_fill_test(x, y, addr); ... } And next, the pages are mapped with iommu table and the device address is set to cmdlist so that G2D's dma can access it. As you may know, the pages from get_user_pages() are pinned. In other words, they CAN NOT be migrated and also swapped out. So the dma access would be safe. But the use of userptr feature has performance overhead so this patch also has memory pool to the userptr feature. Please, assume that user sends cmdlist filled with userptr and size every time to g2d driver, and the get_user_pages funcion will be called every time. The memory pool has maximum 64MB size and the userptr that user had ever sent, is holded in the memory pool. This meaning is that if the userptr from user is same as one in the memory pool, device address to the userptr in the memory pool is set to cmdlist. And last, the pages from get_user_pages() will be freed once user calls free() and the dma access is completed. Actually, get_user_pages() takes 2 reference counts if the user process has never accessed user region allocated by malloc(). Then, if the user calls free(), the page reference count becomes 1 and becomes 0 with put_page() call. And the reverse holds as well. This means how the pages backed are used by dma and freed. This patch is based on "drm/exynos: add iommu support for g2d", https://patchwork.kernel.org/patch/1629481/ Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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4ddc404bc0b3750b015b021653a88943591f40f6 |
|
05-Nov-2012 |
Rahul Sharma <rahul.sharma@samsung.com> |
drm: exynos: fix for mapping of dma buffers This patch fixes the problem of mapping contigous and non contigous dma buffers. Currently page struct is calculated from the buf->dma_addr which is not the physical address. It is replaced by buf->pages which points to the page struct of the first page of contigous memory chunk. This gives the correct page frame number for mapping. Non-contigous dma buffers are described using SG table and SG lists. Each valid SG List is pointing to a single page or group of pages which are physically contigous. Current implementation just maps the first page of each SG List and leave the other pages unmapped, leading to a crash. Given solution finds the page struct for the faulting page through parsing SG table and map it. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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ea6d66c3a797376d21b23dc8261733ce35970014 |
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02-Nov-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: remove EXYNOS_BO_NONCONTIG type checking. With iommu support, non-continuous buffer also is supported so this patch removes these checking from exynos_drm_gem_get/put_dma_addr funciton. This patch is based on the below patch set, "drm/exynos: add iommu support for -next". http://www.spinics.net/lists/dri-devel/msg29041.html Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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d87342c10de68d75ecd976556299c68a300c3834 |
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04-Nov-2012 |
Inki Dae <daeinki@gmail.com> |
drm/exynos: add iommu support for g2d Chagelog v2: removed unnecessary structure, struct g2d_gem_node. Chagelog v1: This patch adds iommu support for g2d driver. For this, it adds subdrv_probe/remove callback to enable or disable g2d iommu. And with this patch, in case of using g2d iommu, we can get or put device address to a gem handle from user through exynos_drm_gem_get/put_dma_addr(). Actually, these functions take a reference to a gem handle so that the gem object used by g2d dma is released properly. And runqueue_node has a pointer to drm_file object of current process to manage gem handles to owner. This patch is based on the below patch set, "drm/exynos: add iommu support for -next". http://www.spinics.net/lists/dri-devel/msg29041.html Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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0519f9a12d0113caab78980c48a7902d2bd40c2c |
|
20-Oct-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: add iommu support for exynos drm framework 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>
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314e51b9851b4f4e8ab302243ff5a6fc6147f379 |
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09-Oct-2012 |
Konstantin Khlebnikov <khlebnikov@openvz.org> |
mm: kill vma flag VM_RESERVED and mm->reserved_vm counter A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA, currently it lost original meaning but still has some effects: | effect | alternative flags -+------------------------+--------------------------------------------- 1| account as reserved_vm | VM_IO 2| skip in core dump | VM_IO, VM_DONTDUMP 3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP 4| do not mlock | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP This patch removes reserved_vm counter from mm_struct. Seems like nobody cares about it, it does not exported into userspace directly, it only reduces total_vm showed in proc. Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP. remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP. remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP. [akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup] Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Carsten Otte <cotte@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Eric Paris <eparis@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Morris <james.l.morris@oracle.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Venkatesh Pallipadi <venki@google.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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760285e7e7ab282c25b5e90816f7c47000557f4f |
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02-Oct-2012 |
David Howells <dhowells@redhat.com> |
UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 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>
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4126d5d61f8466be3f76c1bc4e16d46eb2c9641b |
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02-Oct-2012 |
David Howells <dhowells@redhat.com> |
UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/. 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>
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7da5907c84f8b092dc42b47b5c19684c1b3b4c98 |
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17-Aug-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: fixed page align bug. do not align in page unit at dumb creation. the align is done by exynos_drm_gem_create() to be called commonly. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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4fbd9a4539e4eda1e9588509eb31e9dc38ffd653 |
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07-Aug-2012 |
Thomas Meyer <thomas@m3y3r.de> |
drm/exynos: Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(.. [1] The semantic patch that makes this change is available in scripts/coccinelle/api/err_cast.cocci. More information about semantic patching is available at http://coccinelle.lip6.fr/ Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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cb364e342d8ac2bac694ab7e09e7090c72346c5e |
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09-Jul-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: fixed exception to page allocation failure this patch corrects to deallocate the pages allocated already at alloc_page failure. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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d73c1c995b916a08bfc2d3707afbd3fbf9747300 |
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09-Jul-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use __free_page() to deallocate memory this patch uses __free_page() to deallocate the pages allocated by alloc_page() and the pages doesn't need set_parge_dirty() and mark_page_accessed() because they aren't from page cache so removes them. this patch has a pair with previous patch below, http://www.spinics.net/lists/dri-devel/msg24382.html Changelog v2: remove unnecessary arguments. Changelog v3: fix npages type. - npages can have negative value. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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c374e7319249d61230dbbb190d05ce42898f4361 |
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12-Jun-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: do not release memory region from exporter. the region should be released by exporter once dmabuf's refcount becomes 0. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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c62bc752f2d8cbaaa1fd15fa1bcdf10fb90568c0 |
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07-Jun-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use alloc_page() to allocate pages. shmem_read_mapping_page_gfp() first tries to allocate pages from page cache so if pages are allocated from page cache then these pages could have valid cache line. after that cpu may read garbage data from cache once gpu operation is completed with allocated pages. so with this patch, Non-contiguous memory allocation request allocates pages from highmem through alloc_page() with GFP_HIGHUSER_MOVABLE. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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3fd6b69474efa77c386ac1c658d79dce5cfe1d19 |
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29-Jun-2012 |
Cooper Yuan <cooperyuan@gmail.com> |
drm/exynos: fix buffer pitch calculation Signed-off-by: Cooper Yuan <cooperyuan@gmail.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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6037bafa2e676162a86e4f4dee366e394565a0ee |
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16-May-2012 |
Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
drm/exynos: Don't cast GEM object to Exynos GEM object when not needed The exynos_drm_gem_dumb_map_offset() doesn't need to access any Exynos-specific GEM object fields, don't cast the GEM object. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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40cd7e0c02f37af4b44fc00531873832e45587e9 |
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04-May-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: added a feature to get gem buffer information. this patch adds a feature to get a gem buffer information and user application can get the gem buffer information simply in runtime through gem handle. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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b2df26c10b16afe2eed904f2b85a4d2047531d30 |
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23-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: added drm prime feature. 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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c01d73faad2f775036f0b37c753254479b79cbe6 |
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23-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: added cache attribute support for gem. with this patch, user application can set cache attribute(such as cachable, writecombime or non-cachable) of the memory region allocated by gem framework. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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818c4ea7c589c521912430ea54e0c0a0671b2c6d |
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23-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: added missed vm area region mapping type. with this patch, if the memory region is physically non-continuous then VM_MIXEDMAP is set to vm->vm_flags otherwise VM_PFNMAP. we had missed this flag setting. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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f6ead8dea518d0d02c576432eba4fa145e64b02a |
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23-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: fixed exynos_drm_gem_map_pages bug. this patch fixes the problem that the physical memory region to be mapped to user space could be exceeded. if page fault address was placed at between buffer start and end then memory region to be mapped would be exceeded. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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887ea3db26ec8a43b650ada273e1159492939c10 |
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23-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: fixed duplicatd memory allocation bug. the gem was already allocated at gem allocation time but is allocated at page fault handler so this patch fixes the problem that gem was allocated one more time. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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6be5ceb02e98eaf6cfc4f8b12a896d04023f340d |
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21-Apr-2012 |
Linus Torvalds <torvalds@linux-foundation.org> |
VM: add "vm_mmap()" helper function This continues the theme started with vm_brk() and vm_munmap(): vm_mmap() does the same thing as do_mmap(), but additionally does the required VM locking. This uninlines (and rewrites it to be clearer) do_mmap(), which sadly duplicates it in mm/mmap.c and mm/nommu.c. But that way we don't have to export our internal do_mmap_pgoff() function. Some day we hopefully don't have to export do_mmap() either, if all modular users can become the simpler vm_mmap() instead. We're actually very close to that already, with the notable exception of the (broken) use in i810, and a couple of stragglers in binfmt_elf. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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dcf9af822803bcc2cd9e8009648547e6060b59a0 |
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03-Apr-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: fixed page align and code clean. 1M section, 64k page count also should be rounded up so this patch rounds up them and caculates page count of them properly and also checks memory flags from user. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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132a5b915f41f88356662c14c6866550ce2a08b6 |
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16-Mar-2012 |
Joonyoung Shim <jy0922.shim@samsung.com> |
drm/exynos: remove module of exynos drm subdrv The exynos drm driver has several subdrv. They each can be module but it causes unfixed probe order of exynodr drm driver and each subdrv. It also needs some weird codes such as exynos_drm_fbdev_reinit and exynos_drm_mode_group_reinit. This patch can remove weird codes and clear codes through we doesn't modularity each subdrv. Also this removes unnecessary codes related module. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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f0b1bda725c1c49620d2e7ae7405a247098cdb8e |
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16-Mar-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: added new funtion to get/put dma address. this function would be used for drm based 2d acceleration driver to get/put dma address through gem handle. when exynos_drm_get_dma_address is called reference count of gem object would be increased not to be released by gem close and when exynos_drm_put_dma_address is called the reference count of this gem object would be decreased to be released. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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2b35892e9da672df40ce890bffc4f9f6119c57e0 |
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16-Mar-2012 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: update gem and buffer framework. with this patch, we can allocate physically continuous or non-continuous memory and also it creates scatterlist for iommu support so allocated memory region can be mapped to iommu page table using scatterlist. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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966e0cdd504657333415f43de6a219197511ebff |
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23-Feb-2012 |
Dave Airlie <airlied@redhat.com> |
drm: drop setting vm_file to filp Talking to Al Viro on irc, we can see no possible reason for doing this, the upper mmap code does it. The code has been there since first import into drm tree I can find. Al tracked down this as a requirement pre 2.3.51 hasn't been needed since. Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
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2364839a1aca677842b0dfd7ed0449acda3c3175 |
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13-Dec-2011 |
Joonyoung Shim <jy0922.shim@samsung.com> |
drm/exynos: Split creation of gem object and gem handle exynos_drm_gem_create function created gem object with gem handle but it can be called externally without gem handle creation through this patch. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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2d91cf17b58b4d8228190103bef507bc73094bef |
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13-Dec-2011 |
Joonyoung Shim <jy0922.shim@samsung.com> |
drm/exynos: Fix a fake mmap offset creation Make a fake mmap offset only when it needs. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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ee5e770ef4eedf3abb12d05703d6a722b0e40779 |
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13-Dec-2011 |
Joonyoung Shim <jy0922.shim@samsung.com> |
drm/exynos: gem code cleanup This cleans codes of exynos gem - indents and order function and so on. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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ca22e3cc25f180859561f36d51bf21278db5ae11 |
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15-Nov-2011 |
Seung-Woo Kim <sw0312.kim@samsung.com> |
drm/exynos: fixed wrong err ptr usage and destroy call in exeception - exynos_drm_buf_create() returns err pointer so NULL check is wrong. - Case that exynos_gem_obj is not created, destroy call in exception handle lable uses this pointer. so instead buffer is directly used. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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2c871127e994a678b82104a4110eb7fcc87f05ad |
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12-Nov-2011 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: changed buffer structure. the purpose of this patch is to consider IOMMU support in the future. EXYNOS4 SoC supports IOMMU also so the address for DMA could be physical address with IOMMU or device address with IOMMU. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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f088d5a9c5dd22b6559fa3f3939973bc374c977b |
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12-Nov-2011 |
Inki Dae <inki.dae@samsung.com> |
drm/exynos: use gem create function generically this patch addes exynos_drm_gem_init() creating and initialzing a gem. allocation functions could use this function to create new gem and it changes size type of exynos_drm_gem_create structure to 64bit and also corrects comments to exynos_drm_gem_create structure. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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1c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3c |
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04-Oct-2011 |
Inki Dae <inki.dae@samsung.com> |
DRM: add DRM Driver for Samsung SoC EXYNOS4210. This patch is a DRM Driver for Samsung SoC Exynos4210 and now enables only FIMD yet but we will add HDMI support also in the future. this patch is based on git repository below: git://people.freedesktop.org/~airlied/linux.git branch name: drm-next commit-id: 88ef4e3f4f616462b78a7838eb3ffc3818d30f67 you can refer to our working repository below: http://git.infradead.org/users/kmpark/linux-2.6-samsung branch name: samsung-drm We tried to re-use lowlevel codes of the FIMD driver(s3c-fb.c based on Linux framebuffer) but couldn't so because lowlevel codes of s3c-fb.c are included internally and so FIMD module of this driver has its own lowlevel codes. We used GEM framework for buffer management and DMA APIs(dma_alloc_*) for buffer allocation so we can allocate physically continuous memory for DMA through it and also we could use CMA later if CMA is applied to mainline. Refer to this link for CMA(Continuous Memory Allocator): http://lkml.org/lkml/2011/7/20/45 this driver supports only physically continuous memory(non-iommu). Links to previous versions of the patchset: v1: < https://lwn.net/Articles/454380/ > v2: < http://www.spinics.net/lists/kernel/msg1224275.html > v3: < http://www.spinics.net/lists/dri-devel/msg13755.html > v4: < http://permalink.gmane.org/gmane.comp.video.dri.devel/60439 > v5: < http://comments.gmane.org/gmane.comp.video.dri.devel/60802 > Changelog v2: DRM: add DRM_IOCTL_SAMSUNG_GEM_MMAP ioctl command. this feature maps user address space to physical memory region once user application requests DRM_IOCTL_SAMSUNG_GEM_MMAP ioctl. DRM: code clean and add exception codes. Changelog v3: DRM: Support multiple irq. FIMD and HDMI have their own irq handler but DRM Framework can regiter only one irq handler this patch supports mutiple irq for Samsung SoC. DRM: Consider modularization. each DRM, FIMD could be built as a module. DRM: Have indenpendent crtc object. crtc isn't specific to SoC Platform so this patch gets a crtc to be used as common object. created crtc could be attached to any encoder object. DRM: code clean and add exception codes. Changelog v4: DRM: remove is_defult from samsung_fb. is_default isn't used for default framebuffer. DRM: code refactoring to fimd module. this patch is be considered with multiple display objects and would use its own request_irq() to register a irq handler instead of drm framework's one. DRM: remove find_samsung_drm_gem_object() DRM: move kernel private data structures and definitions to driver folder. samsung_drm.h would contain only public information for userspace ioctl interface. DRM: code refactoring to gem modules. buffer module isn't dependent of gem module anymore. DRM: fixed security issue. DRM: remove encoder porinter from specific connector. samsung connector doesn't need to have generic encoder. DRM: code clean and add exception codes. Changelog v5: DRM: updated fimd(display controller) driver. added various pixel formats, color key and pixel blending features. DRM: removed end_buf_off from samsung_drm_overlay structure. this variable isn't used and end buffer address would be calculated by each sub driver. DRM: use generic function for mmap_offset. replaced samsung_drm_gem_create_mmap_offset() and samsung_drm_free_mmap_offset() with generic ones applied to mainline recentrly. DRM: removed unnecessary codes and added exception codes. DRM: added comments and code clean. Changelog v6: DRM: added default config options. DRM: added padding for 64-bit align. DRM: changed prefix 'samsung' to 'exynos' Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
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