[deliverable/linux.git] / drivers / gpu / drm / msm / msm_gem.h

/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * 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 __MSM_GEM_H__
#define __MSM_GEM_H__

#include <linux/reservation.h>
#include "msm_drv.h"

/* Additional internal-use only BO flags: */
#define MSM_BO_STOLEN        0x10000000    /* try to use stolen/splash memory */

struct msm_gem_object {
	struct drm_gem_object base;

	uint32_t flags;

	/* And object is either:
	 *  inactive - on priv->inactive_list
	 *  active   - on one one of the gpu's active_list..  well, at
	 *     least for now we don't have (I don't think) hw sync between
	 *     2d and 3d one devices which have both, meaning we need to
	 *     block on submit if a bo is already on other ring
	 *
	 */
	struct list_head mm_list;
	struct msm_gpu *gpu;     /* non-null if active */
	uint32_t read_fence, write_fence;

	/* Transiently in the process of submit ioctl, objects associated
	 * with the submit are on submit->bo_list.. this only lasts for
	 * the duration of the ioctl, so one bo can never be on multiple
	 * submit lists.
	 */
	struct list_head submit_entry;

	struct page **pages;
	struct sg_table *sgt;
	void *vaddr;

	struct {
		// XXX
		uint32_t iova;
	} domain[NUM_DOMAINS];

	/* normally (resv == &_resv) except for imported bo's */
	struct reservation_object *resv;
	struct reservation_object _resv;

	/* For physically contiguous buffers.  Used when we don't have
	 * an IOMMU.  Also used for stolen/splashscreen buffer.
	 */
	struct drm_mm_node *vram_node;
};
#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)

static inline bool is_active(struct msm_gem_object *msm_obj)
{
	return msm_obj->gpu != NULL;
}

static inline uint32_t msm_gem_fence(struct msm_gem_object *msm_obj,
		uint32_t op)
{
	uint32_t fence = 0;

	if (op & MSM_PREP_READ)
		fence = msm_obj->write_fence;
	if (op & MSM_PREP_WRITE)
		fence = max(fence, msm_obj->read_fence);

	return fence;
}

#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 msm_gem_submit {
	struct drm_device *dev;
	struct msm_gpu *gpu;
	struct list_head node;   /* node in gpu submit_list */
	struct list_head bo_list;
	struct ww_acquire_ctx ticket;
	uint32_t fence;
	bool valid;
	unsigned int nr_cmds;
	unsigned int nr_bos;
	struct {
		uint32_t type;
		uint32_t size;  /* in dwords */
		uint32_t iova;
		uint32_t idx;   /* cmdstream buffer idx in bos[] */
	} cmd[MAX_CMDS];
	struct {
		uint32_t flags;
		struct msm_gem_object *obj;
		uint32_t iova;
	} bos[0];
};

#endif /* __MSM_GEM_H__ */
Commit	Line	Data
c8afe684 RC	1	/*
	2	* Copyright (C) 2013 Red Hat
	3	* Author: Rob Clark <robdclark@gmail.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License version 2 as published by
	7	* the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program. If not, see <http://www.gnu.org/licenses/>.
	16	*/
	17
	18	#ifndef __MSM_GEM_H__
	19	#define __MSM_GEM_H__
	20
7198e6b0	21	#include <linux/reservation.h>
c8afe684 RC	22	#include "msm_drv.h"
c8afe684 RC	23
072f1f91 RC	24	/* Additional internal-use only BO flags: */
	25	#define MSM_BO_STOLEN 0x10000000 /* try to use stolen/splash memory */
	26
c8afe684 RC	27	struct msm_gem_object {
	28	struct drm_gem_object base;
	29
	30	uint32_t flags;
	31
7198e6b0 RC	32	/* And object is either:
	33	* inactive - on priv->inactive_list
	34	* active - on one one of the gpu's active_list.. well, at
	35	* least for now we don't have (I don't think) hw sync between
	36	* 2d and 3d one devices which have both, meaning we need to
	37	* block on submit if a bo is already on other ring
	38	*
	39	*/
c8afe684	40	struct list_head mm_list;
7198e6b0	41	struct msm_gpu gpu; / non-null if active */
bf6811f3	42	uint32_t read_fence, write_fence;
7198e6b0 RC	43
	44	/* Transiently in the process of submit ioctl, objects associated
	45	* with the submit are on submit->bo_list.. this only lasts for
	46	* the duration of the ioctl, so one bo can never be on multiple
	47	* submit lists.
	48	*/
	49	struct list_head submit_entry;
	50
c8afe684 RC	51	struct page **pages;
	52	struct sg_table *sgt;
	53	void *vaddr;
	54
	55	struct {
	56	// XXX
	57	uint32_t iova;
	58	} domain[NUM_DOMAINS];
7198e6b0 RC	59
	60	/* normally (resv == &_resv) except for imported bo's */
	61	struct reservation_object *resv;
	62	struct reservation_object _resv;
871d812a RC	63
871d812a RC	64	/* For physically contiguous buffers. Used when we don't have
072f1f91	65	* an IOMMU. Also used for stolen/splashscreen buffer.
871d812a RC	66	*/
871d812a RC	67	struct drm_mm_node *vram_node;
c8afe684 RC	68	};
	69	#define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
	70
7198e6b0 RC	71	static inline bool is_active(struct msm_gem_object *msm_obj)
	72	{
	73	return msm_obj->gpu != NULL;
	74	}
	75
69193e50 RC	76	static inline uint32_t msm_gem_fence(struct msm_gem_object *msm_obj,
	77	uint32_t op)
	78	{
	79	uint32_t fence = 0;
	80
	81	if (op & MSM_PREP_READ)
	82	fence = msm_obj->write_fence;
	83	if (op & MSM_PREP_WRITE)
	84	fence = max(fence, msm_obj->read_fence);
	85
	86	return fence;
	87	}
	88
7198e6b0 RC	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 msm_gem_submit {
	97	struct drm_device *dev;
	98	struct msm_gpu *gpu;
1a370be9	99	struct list_head node; /* node in gpu submit_list */
7198e6b0 RC	100	struct list_head bo_list;
	101	struct ww_acquire_ctx ticket;
	102	uint32_t fence;
	103	bool valid;
	104	unsigned int nr_cmds;
	105	unsigned int nr_bos;
	106	struct {
	107	uint32_t type;
	108	uint32_t size; /* in dwords */
	109	uint32_t iova;
a7d3c950	110	uint32_t idx; /* cmdstream buffer idx in bos[] */
7198e6b0 RC	111	} cmd[MAX_CMDS];
	112	struct {
	113	uint32_t flags;
	114	struct msm_gem_object *obj;
	115	uint32_t iova;
	116	} bos[0];
	117	};
	118
c8afe684	119	#endif /* __MSM_GEM_H__ */