Release 4.7 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 */

	/* 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;
}

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#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;
	
struct fence *fence;
	
struct pid *pid;    /* submitting process */
	
bool valid;         /* true if no cmdstream patching needed */
	
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__ */
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Directory: drivers/gpu/drm/msm

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