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617d5b34f2
Allow TTM know if vendor set new ttm mananger out of bounds by adding build_bug_on. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210913080950.180752-1-xinhui.pan@amd.com Signed-off-by: Christian König <christian.koenig@amd.com>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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#ifndef _TTM_RANGE_MANAGER_H_
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#define _TTM_RANGE_MANAGER_H_
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#include <drm/ttm/ttm_resource.h>
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#include <drm/ttm/ttm_device.h>
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#include <drm/drm_mm.h>
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/**
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* struct ttm_range_mgr_node
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*
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* @base: base clase we extend
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* @mm_nodes: MM nodes, usually 1
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*
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* Extending the ttm_resource object to manage an address space allocation with
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* one or more drm_mm_nodes.
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*/
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struct ttm_range_mgr_node {
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struct ttm_resource base;
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struct drm_mm_node mm_nodes[];
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};
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/**
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* to_ttm_range_mgr_node
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*
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* @res: the resource to upcast
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*
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* Upcast the ttm_resource object into a ttm_range_mgr_node object.
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*/
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static inline struct ttm_range_mgr_node *
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to_ttm_range_mgr_node(struct ttm_resource *res)
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{
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return container_of(res, struct ttm_range_mgr_node, base);
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}
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int ttm_range_man_init_nocheck(struct ttm_device *bdev,
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unsigned type, bool use_tt,
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unsigned long p_size);
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int ttm_range_man_fini_nocheck(struct ttm_device *bdev,
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unsigned type);
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static __always_inline int ttm_range_man_init(struct ttm_device *bdev,
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unsigned int type, bool use_tt,
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unsigned long p_size)
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{
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BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
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return ttm_range_man_init_nocheck(bdev, type, use_tt, p_size);
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}
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static __always_inline int ttm_range_man_fini(struct ttm_device *bdev,
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unsigned int type)
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{
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BUILD_BUG_ON(__builtin_constant_p(type) && type >= TTM_NUM_MEM_TYPES);
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return ttm_range_man_fini_nocheck(bdev, type);
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}
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#endif
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