12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */
21c248b7dSInki Dae /* exynos_drm_gem.h
31c248b7dSInki Dae *
41c248b7dSInki Dae * Copyright (c) 2011 Samsung Electronics Co., Ltd.
51c248b7dSInki Dae * Authoer: Inki Dae <inki.dae@samsung.com>
61c248b7dSInki Dae */
71c248b7dSInki Dae
81c248b7dSInki Dae #ifndef _EXYNOS_DRM_GEM_H_
91c248b7dSInki Dae #define _EXYNOS_DRM_GEM_H_
101c248b7dSInki Dae
11d9fc9413SDaniel Vetter #include <drm/drm_gem.h>
128a8d9b2cSSouptick Joarder #include <linux/mm_types.h>
13d9fc9413SDaniel Vetter
14813fd67bSJoonyoung Shim #define to_exynos_gem(x) container_of(x, struct exynos_drm_gem, base)
151c248b7dSInki Dae
16dcf9af82SInki Dae #define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG)
17dcf9af82SInki Dae
181c248b7dSInki Dae /*
191c248b7dSInki Dae * exynos drm buffer structure.
201c248b7dSInki Dae *
211c248b7dSInki Dae * @base: a gem object.
221c248b7dSInki Dae * - a new handle to this gem object would be created
231c248b7dSInki Dae * by drm_gem_handle_create().
242a8cb489SJoonyoung Shim * @flags: indicate memory type to allocated buffer and cache attruibute.
253c52b880SInki Dae * @size: size requested from user, in bytes and this size is aligned
263c52b880SInki Dae * in page unit.
272a8cb489SJoonyoung Shim * @cookie: cookie returned by dma_alloc_attrs
289940d9d9SMarek Szyprowski * @kvaddr: kernel virtual address to allocated memory region (for fbdev)
292a8cb489SJoonyoung Shim * @dma_addr: bus address(accessed by dma) to allocated memory region.
302a8cb489SJoonyoung Shim * - this address could be physical address without IOMMU and
312a8cb489SJoonyoung Shim * device address with IOMMU.
329940d9d9SMarek Szyprowski * @dma_attrs: attrs passed dma mapping framework
337c93537aSJoonyoung Shim * @sgt: Imported sg_table.
341c248b7dSInki Dae *
35c6b78bc8SMasanari Iida * P.S. this object would be transferred to user as kms_bo.handle so
361c248b7dSInki Dae * user can access the buffer through kms_bo.handle.
371c248b7dSInki Dae */
38813fd67bSJoonyoung Shim struct exynos_drm_gem {
391c248b7dSInki Dae struct drm_gem_object base;
402b35892eSInki Dae unsigned int flags;
412a8cb489SJoonyoung Shim unsigned long size;
422a8cb489SJoonyoung Shim void *cookie;
43*d4035d10SMarek Szyprowski void *kvaddr;
442a8cb489SJoonyoung Shim dma_addr_t dma_addr;
4500085f1eSKrzysztof Kozlowski unsigned long dma_attrs;
467c93537aSJoonyoung Shim struct sg_table *sgt;
471c248b7dSInki Dae };
481c248b7dSInki Dae
492364839aSJoonyoung Shim /* destroy a buffer with gem object */
50813fd67bSJoonyoung Shim void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem);
512364839aSJoonyoung Shim
522364839aSJoonyoung Shim /* create a new buffer with gem object */
53813fd67bSJoonyoung Shim struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev,
542b35892eSInki Dae unsigned int flags,
559940d9d9SMarek Szyprowski unsigned long size,
569940d9d9SMarek Szyprowski bool kvmap);
571c248b7dSInki Dae
581c248b7dSInki Dae /*
591c248b7dSInki Dae * request gem object creation and buffer allocation as the size
601c248b7dSInki Dae * that it is calculated with framebuffer information such as width,
611c248b7dSInki Dae * height and bpp.
621c248b7dSInki Dae */
631c248b7dSInki Dae int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
641c248b7dSInki Dae struct drm_file *file_priv);
651c248b7dSInki Dae
666564c65fSJoonyoung Shim /* get fake-offset of gem object that can be used with mmap. */
676564c65fSJoonyoung Shim int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data,
686564c65fSJoonyoung Shim struct drm_file *file_priv);
696564c65fSJoonyoung Shim
70f0b1bda7SInki Dae /*
713aa2a5c1SMarek Szyprowski * get exynos drm object from gem handle, this function could be used for
72f0b1bda7SInki Dae * other drivers such as 2d/3d acceleration drivers.
73f0b1bda7SInki Dae * with this function call, gem object reference count would be increased.
74f0b1bda7SInki Dae */
753aa2a5c1SMarek Szyprowski struct exynos_drm_gem *exynos_drm_gem_get(struct drm_file *filp,
763aa2a5c1SMarek Szyprowski unsigned int gem_handle);
77f0b1bda7SInki Dae
78f0b1bda7SInki Dae /*
793aa2a5c1SMarek Szyprowski * put exynos drm object acquired from exynos_drm_gem_get(),
803aa2a5c1SMarek Szyprowski * gem object reference count would be decreased.
81f0b1bda7SInki Dae */
exynos_drm_gem_put(struct exynos_drm_gem * exynos_gem)823aa2a5c1SMarek Szyprowski static inline void exynos_drm_gem_put(struct exynos_drm_gem *exynos_gem)
833aa2a5c1SMarek Szyprowski {
841138a5f6SEmil Velikov drm_gem_object_put(&exynos_gem->base);
853aa2a5c1SMarek Szyprowski }
86f0b1bda7SInki Dae
8740cd7e0cSInki Dae /* get buffer information to memory region allocated by gem. */
8840cd7e0cSInki Dae int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
8940cd7e0cSInki Dae struct drm_file *file_priv);
9040cd7e0cSInki Dae
911c248b7dSInki Dae /* free gem object. */
92813fd67bSJoonyoung Shim void exynos_drm_gem_free_object(struct drm_gem_object *obj);
931c248b7dSInki Dae
941c248b7dSInki Dae /* create memory region for drm framebuffer. */
951c248b7dSInki Dae int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
96ee5e770eSJoonyoung Shim struct drm_device *dev,
97ee5e770eSJoonyoung Shim struct drm_mode_create_dumb *args);
981c248b7dSInki Dae
9901ed50ddSJoonyoung Shim /* low-level interface prime helpers */
10089452d4aSMarek Szyprowski struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev,
10189452d4aSMarek Szyprowski struct dma_buf *dma_buf);
10201ed50ddSJoonyoung Shim struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj);
10301ed50ddSJoonyoung Shim struct drm_gem_object *
10401ed50ddSJoonyoung Shim exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
10501ed50ddSJoonyoung Shim struct dma_buf_attachment *attach,
10601ed50ddSJoonyoung Shim struct sg_table *sgt);
10701ed50ddSJoonyoung Shim
1081c248b7dSInki Dae #endif
109