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