debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/gpu/drm/exynos/exynos_drm_gem.h
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@@ -1,12 +1,8 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /* exynos_drm_gem.h
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  *
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  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
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  * Authoer: Inki Dae <inki.dae@samsung.com>
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- *
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- * This program is free software; you can redistribute  it and/or modify it
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- * under  the terms of  the GNU General  Public License as published by the
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- * Free Software Foundation;  either version 2 of the  License, or (at your
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- * option) any later version.
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  */
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 #ifndef _EXYNOS_DRM_GEM_H_
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@@ -25,20 +21,15 @@
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  * @base: a gem object.
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  *	- a new handle to this gem object would be created
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  *	by drm_gem_handle_create().
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- * @buffer: a pointer to exynos_drm_gem_buffer object.
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- *	- contain the information to memory region allocated
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- *	by user request or at framebuffer creation.
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- *	continuous memory region allocated by user request
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- *	or at framebuffer creation.
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  * @flags: indicate memory type to allocated buffer and cache attruibute.
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  * @size: size requested from user, in bytes and this size is aligned
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  *	in page unit.
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  * @cookie: cookie returned by dma_alloc_attrs
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- * @kvaddr: kernel virtual address to allocated memory region.
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+ * @kvaddr: kernel virtual address to allocated memory region (for fbdev)
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  * @dma_addr: bus address(accessed by dma) to allocated memory region.
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  *	- this address could be physical address without IOMMU and
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  *	device address with IOMMU.
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- * @pages: Array of backing pages.
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+ * @dma_attrs: attrs passed dma mapping framework
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  * @sgt: Imported sg_table.
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  *
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  * P.S. this object would be transferred to user as kms_bo.handle so
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@@ -49,10 +40,9 @@
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 	unsigned int		flags;
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 	unsigned long		size;
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 	void			*cookie;
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-	void __iomem		*kvaddr;
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+	void			*kvaddr;
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 	dma_addr_t		dma_addr;
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 	unsigned long		dma_attrs;
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-	struct page		**pages;
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 	struct sg_table		*sgt;
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 };
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@@ -62,7 +52,8 @@
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 /* create a new buffer with gem object */
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 struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev,
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 					     unsigned int flags,
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-					     unsigned long size);
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+					     unsigned long size,
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+					     bool kvmap);
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 /*
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  * request gem object creation and buffer allocation as the size
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@@ -90,7 +81,7 @@
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  */
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 static inline void exynos_drm_gem_put(struct exynos_drm_gem *exynos_gem)
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 {
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-	drm_gem_object_put_unlocked(&exynos_gem->base);
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+	drm_gem_object_put(&exynos_gem->base);
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 }
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 /* get buffer information to memory region allocated by gem. */
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@@ -104,9 +95,6 @@
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 int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
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 			       struct drm_device *dev,
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 			       struct drm_mode_create_dumb *args);
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-
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-/* page fault handler and mmap fault address(virtual) to physical memory. */
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-vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf);
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 /* set vm_flags and we can change the vm attribute to other one at here. */
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 int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);