/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- */ /************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * **************************************************************************/ #include "i915.h" #include "drmP.h" #include "drm.h" #include "i915_drm.h" #include "i915_drv.h" #include "drm_core.h" Git repository'/>
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/**************************************************************************
 *
 * Copyright © 2007 Red Hat Inc.
 * Copyright © 2007 Intel Corporation
 * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 *
 **************************************************************************/
/*
 * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 *          Keith Whitwell <keithw-at-tungstengraphics-dot-com>
 *	    Eric Anholt <eric@anholt.net>
 *	    Dave Airlie <airlied@linux.ie>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <xf86drm.h>
#include <xf86atomic.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <pthread.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <stdbool.h>

#include "errno.h"
#include "libdrm_lists.h"
#include "intel_bufmgr.h"
#include "intel_bufmgr_priv.h"
#include "intel_chipset.h"
#include "string.h"

#include "i915_drm.h"

#define DBG(...) do {					\
	if (bufmgr_gem->bufmgr.debug)			\
		fprintf(stderr, __VA_ARGS__);		\
} while (0)

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

typedef struct _drm_intel_bo_gem drm_intel_bo_gem;

struct drm_intel_gem_bo_bucket {
	drmMMListHead head;
	unsigned long size;
};

typedef struct _drm_intel_bufmgr_gem {
	drm_intel_bufmgr bufmgr;

	int fd;

	int max_relocs;

	pthread_mutex_t lock;

	struct drm_i915_gem_exec_object *exec_objects;
	struct drm_i915_gem_exec_object2 *exec2_objects;
	drm_intel_bo **exec_bos;
	int exec_size;
	int exec_count;

	/** Array of lists of cached gem objects of power-of-two sizes */
	struct drm_intel_gem_bo_bucket cache_bucket[14 * 4];
	int num_buckets;
	time_t time;

	drmMMListHead named;
	drmMMListHead vma_cache;
	int vma_count, vma_open, vma_max;

	uint64_t gtt_size;
	int available_fences;
	int pci_device;
	int gen;
	unsigned int has_bsd : 1;
	unsigned int has_blt : 1;
	unsigned int has_relaxed_fencing : 1;
	unsigned int has_llc : 1;
	unsigned int bo_reuse : 1;
	bool fenced_relocs;
} drm_intel_bufmgr_gem;

#define DRM_INTEL_RELOC_FENCE (1<<0)

typedef struct _drm_intel_reloc_target_info {
	drm_intel_bo *bo;
	int flags;
} drm_intel_reloc_target;

struct _drm_intel_bo_gem {
	drm_intel_bo bo;

	atomic_t refcount;
	uint32_t gem_handle;
	const char *name;

	/**
	 * Kenel-assigned global name for this object
	 */
	unsigned int global_name;
	drmMMListHead name_list;

	/**
	 * Index of the buffer within the validation list while preparing a
	 * batchbuffer execution.
	 */
	int validate_index;

	/**
	 * Current tiling mode
	 */
	uint32_t tiling_mode;
	uint32_t swizzle_mode;
	unsigned long stride;

	time_t free_time;

	/** Array passed to the DRM containing relocation information. */
	struct drm_i915_gem_relocation_entry *relocs;
	/**
	 * Array of info structs corresponding to relocs[i].target_handle etc
	 */
	drm_intel_reloc_target *reloc_target_info;
	/** Number of entries in relocs */
	int reloc_count;
	/** Mapped address for the buffer, saved across map/unmap cycles */
	void *mem_virtual;
	/** GTT virtual address for the buffer, saved across map/unmap cycles */
	void *gtt_virtual;
	int map_count;
	drmMMListHead vma_list;

	/** BO cache list */
	drmMMListHead head;

	/**
	 * Boolean of whether this BO and its children have been included in
	 * the current drm_intel_bufmgr_check_aperture_space() total.
	 */
	bool included_in_check_aperture;

	/**
	 * Boolean of whether this buffer has been used as a relocation
	 * target and had its size accounted for, and thus can't have any