mirror of https://gitee.com/openkylin/linux.git
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/*
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* Copyright (C) 2015 Etnaviv Project
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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 version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ETNAVIV_GEM_H__
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#define __ETNAVIV_GEM_H__
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#include <linux/reservation.h>
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#include "etnaviv_drv.h"
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struct dma_fence;
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struct etnaviv_gem_ops;
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struct etnaviv_gem_object;
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struct etnaviv_gem_userptr {
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uintptr_t ptr;
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struct task_struct *task;
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struct work_struct *work;
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bool ro;
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};
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struct etnaviv_vram_mapping {
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struct list_head obj_node;
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struct list_head scan_node;
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struct list_head mmu_node;
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struct etnaviv_gem_object *object;
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struct etnaviv_iommu *mmu;
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struct drm_mm_node vram_node;
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unsigned int use;
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u32 iova;
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};
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struct etnaviv_gem_object {
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struct drm_gem_object base;
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const struct etnaviv_gem_ops *ops;
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struct mutex lock;
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u32 flags;
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struct list_head gem_node;
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struct etnaviv_gpu *gpu; /* non-null if active */
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atomic_t gpu_active;
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u32 access;
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struct page **pages;
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struct sg_table *sgt;
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void *vaddr;
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/* normally (resv == &_resv) except for imported bo's */
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struct reservation_object *resv;
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struct reservation_object _resv;
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struct list_head vram_list;
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/* cache maintenance */
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u32 last_cpu_prep_op;
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struct etnaviv_gem_userptr userptr;
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};
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static inline
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struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
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{
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return container_of(obj, struct etnaviv_gem_object, base);
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}
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struct etnaviv_gem_ops {
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int (*get_pages)(struct etnaviv_gem_object *);
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void (*release)(struct etnaviv_gem_object *);
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void *(*vmap)(struct etnaviv_gem_object *);
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int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
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};
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static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
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{
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return atomic_read(&etnaviv_obj->gpu_active) != 0;
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}
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#define MAX_CMDS 4
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struct etnaviv_gem_submit_bo {
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u32 flags;
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struct etnaviv_gem_object *obj;
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struct etnaviv_vram_mapping *mapping;
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};
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/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
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* associated with the cmdstream submission for synchronization (and
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* make it easier to unwind when things go wrong, etc). This only
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* lasts for the duration of the submit-ioctl.
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*/
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struct etnaviv_gem_submit {
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struct drm_device *dev;
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struct etnaviv_gpu *gpu;
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struct ww_acquire_ctx ticket;
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struct dma_fence *fence;
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unsigned int nr_bos;
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struct etnaviv_gem_submit_bo bos[0];
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u32 flags;
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};
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int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
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struct timespec *timeout);
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int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
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struct reservation_object *robj, const struct etnaviv_gem_ops *ops,
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struct etnaviv_gem_object **res);
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int etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
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struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
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void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
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struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
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struct drm_gem_object *obj, struct etnaviv_gpu *gpu);
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void etnaviv_gem_mapping_reference(struct etnaviv_vram_mapping *mapping);
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void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
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#endif /* __ETNAVIV_GEM_H__ */
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