[linux-2.6-block.git] / drivers / gpu / drm / etnaviv / etnaviv_gem.h

/*
 * 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 *);
};

static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
{
	return atomic_read(&etnaviv_obj->gpu_active) != 0;
}

#define MAX_CMDS 4

/* 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 {
		u32 flags;
		struct etnaviv_gem_object *obj;
		u32 iova;
	} 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);

#endif /* __ETNAVIV_GEM_H__ */
Commit	Line	Data
a8c21a54 T	1	/*
	2	* Copyright (C) 2015 Etnaviv Project
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms of the GNU General Public License version 2 as published by
	6	* the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope that it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
	17	#ifndef __ETNAVIV_GEM_H__
	18	#define __ETNAVIV_GEM_H__
	19
	20	#include <linux/reservation.h>
	21	#include "etnaviv_drv.h"
	22
	23	struct etnaviv_gem_ops;
	24	struct etnaviv_gem_object;
	25
	26	struct etnaviv_gem_userptr {
	27	uintptr_t ptr;
	28	struct task_struct *task;
	29	struct work_struct *work;
	30	bool ro;
	31	};
	32
	33	struct etnaviv_vram_mapping {
	34	struct list_head obj_node;
	35	struct list_head scan_node;
	36	struct list_head mmu_node;
	37	struct etnaviv_gem_object *object;
	38	struct etnaviv_iommu *mmu;
	39	struct drm_mm_node vram_node;
	40	unsigned int use;
	41	u32 iova;
	42	};
	43
	44	struct etnaviv_gem_object {
	45	struct drm_gem_object base;
	46	const struct etnaviv_gem_ops *ops;
	47	struct mutex lock;
	48
	49	u32 flags;
	50
	51	struct list_head gem_node;
	52	struct etnaviv_gpu gpu; / non-null if active */
	53	atomic_t gpu_active;
	54	u32 access;
	55
	56	struct page **pages;
	57	struct sg_table *sgt;
	58	void *vaddr;
	59
	60	/* normally (resv == &_resv) except for imported bo's */
	61	struct reservation_object *resv;
	62	struct reservation_object _resv;
	63
	64	struct list_head vram_list;
65
66	/* cache maintenance */
67	u32 last_cpu_prep_op;
68
69	struct etnaviv_gem_userptr userptr;
70	};
71
72	static inline
73	struct etnaviv_gem_object to_etnaviv_bo(struct drm_gem_object obj)
74	{
75	return container_of(obj, struct etnaviv_gem_object, base);
76	}
77
78	struct etnaviv_gem_ops {
79	int (get_pages)(struct etnaviv_gem_object );
80	void (release)(struct etnaviv_gem_object );
a0a5ab3e	81	void (vmap)(struct etnaviv_gem_object *);
a8c21a54 T	82	};
	83
	84	static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
	85	{
	86	return atomic_read(&etnaviv_obj->gpu_active) != 0;
	87	}
	88
	89	#define MAX_CMDS 4
	90
	91	/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
	92	* associated with the cmdstream submission for synchronization (and
	93	* make it easier to unwind when things go wrong, etc). This only
	94	* lasts for the duration of the submit-ioctl.
	95	*/
	96	struct etnaviv_gem_submit {
	97	struct drm_device *dev;
	98	struct etnaviv_gpu *gpu;
	99	struct ww_acquire_ctx ticket;
	100	u32 fence;
	101	unsigned int nr_bos;
	102	struct {
	103	u32 flags;
	104	struct etnaviv_gem_object *obj;
	105	u32 iova;
	106	} bos[0];
	107	};
	108
	109	int etnaviv_gem_wait_bo(struct etnaviv_gpu gpu, struct drm_gem_object obj,
	110	struct timespec *timeout);
	111	int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
	112	struct reservation_object robj, const struct etnaviv_gem_ops ops,
	113	struct etnaviv_gem_object **res);
	114	int etnaviv_gem_obj_add(struct drm_device dev, struct drm_gem_object obj);
	115	struct page *etnaviv_gem_get_pages(struct etnaviv_gem_object obj);
	116	void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
	117
	118	#endif /* __ETNAVIV_GEM_H__ */