4f7758ffa1
Handle has some limits and can't be used as unique buffer ID on systems where display controller can scanout from CMA but GPU can work with both CMA and VRAM. Such systems have DRM/KMS and DRM/GPU drivers separated. GBM frontend is always expecting handle for DRM/KMS driver. In such system any attempt of importing the buffer with more than 1 contiguous chunk into DRM/KMS driver will fail. Using dma-buf inode as unique buffer ID is a common practice for a last several years starting from [this kernel patch][1]. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed63bb1d1f8469586006a9ca63c42344401aa2ab Change-Id: Ic3a69010d5da2f866a2252fc7e9eb29d67f8e1ed Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/*
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* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef DRV_HELPERS_H
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#define DRV_HELPERS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include "drv.h"
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#include "drv_array_helpers.h"
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#ifndef PAGE_SIZE
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#define PAGE_SIZE 0x1000
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#endif
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struct format_metadata;
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uint32_t drv_height_from_format(uint32_t format, uint32_t height, size_t plane);
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uint32_t drv_vertical_subsampling_from_format(uint32_t format, size_t plane);
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uint32_t drv_size_from_format(uint32_t format, uint32_t stride, uint32_t height, size_t plane);
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int drv_bo_from_format(struct bo *bo, uint32_t stride, uint32_t stride_align,
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uint32_t aligned_height, uint32_t format);
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int drv_bo_from_format_and_padding(struct bo *bo, uint32_t stride, uint32_t stride_align,
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uint32_t aligned_height, uint32_t format,
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uint32_t padding[DRV_MAX_PLANES]);
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int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
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uint64_t use_flags);
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int drv_dumb_bo_create_ex(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
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uint64_t use_flags, uint64_t quirks);
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int drv_dumb_bo_destroy(struct bo *bo);
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int drv_gem_close(struct driver *drv, uint32_t gem_handle);
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int drv_gem_bo_destroy(struct bo *bo);
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int drv_prime_bo_import(struct bo *bo, struct drv_import_fd_data *data);
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void *drv_dumb_bo_map(struct bo *bo, struct vma *vma, uint32_t map_flags);
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int drv_bo_munmap(struct bo *bo, struct vma *vma);
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int drv_get_prot(uint32_t map_flags);
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void drv_add_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
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uint64_t usage);
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void drv_add_combinations(struct driver *drv, const uint32_t *formats, uint32_t num_formats,
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struct format_metadata *metadata, uint64_t usage);
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void drv_modify_combination(struct driver *drv, uint32_t format, struct format_metadata *metadata,
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uint64_t usage);
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int drv_modify_linear_combinations(struct driver *drv);
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uint64_t drv_pick_modifier(const uint64_t *modifiers, uint32_t count,
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const uint64_t *modifier_order, uint32_t order_count);
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bool drv_has_modifier(const uint64_t *list, uint32_t count, uint64_t modifier);
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void drv_resolve_format_and_use_flags_helper(struct driver *drv, uint32_t format,
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uint64_t use_flags, uint32_t *out_format,
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uint64_t *out_use_flags);
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uint32_t drv_get_inode(int dmabuf_fd);
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/*
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* Get an option. Should return NULL if specified option is not set.
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*/
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const char *drv_get_os_option(const char *name);
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struct lru_entry {
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struct lru_entry *next;
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struct lru_entry *prev;
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};
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struct lru {
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struct lru_entry head;
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int count;
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int max;
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};
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struct lru_entry *lru_find(struct lru *lru, bool (*eq)(struct lru_entry *e, void *data),
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void *data);
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void lru_insert(struct lru *lru, struct lru_entry *entry);
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void lru_init(struct lru *lru, int max);
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#ifdef __cplusplus
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}
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#endif
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#endif
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