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authorThomas Hellstrom <thomas-at-tungstengraphics-dot-com>2007-03-30 12:23:22 +0200
committerThomas Hellstrom <thomas-at-tungstengraphics-dot-com>2007-04-03 10:29:14 +0200
commitd85e243259259d7702db0d344ae1ff7d26598227 (patch)
treed20c87a040f752368b483ff983fe65180b80a760 /bsd-core/sis_drm.h
parent72d457fc1973a61f906a42d049c1c160cc7dee4e (diff)
Fix an oops when trying to clean a not yet initialized memory type.
Diffstat (limited to 'bsd-core/sis_drm.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-03 22:13:42 +0000
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/**************************************************************************
 *
 * 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 above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * 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.
 *
 *
 **************************************************************************/
/*
 * Simple memory MANager interface that keeps track on allocate regions on a
 * per "owner" basis. All regions associated with an "owner" can be released
 * with a simple call. Typically if the "owner" exists. The owner is any
 * "unsigned long" identifier. Can typically be a pointer to a file private
 * struct or a context identifier.
 *
 * Authors:
 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#ifndef DRM_SMAN_H
#define DRM_SMAN_H

#include "drmP.h"
#include "drm_hashtab.h"

/*
 * A class that is an abstration of a simple memory allocator.
 * The sman implementation provides a default such allocator
 * using the drm_mm.c implementation. But the user can replace it.
 * See the SiS implementation, which may use the SiS FB kernel module
 * for memory management.
 */

typedef struct drm_sman_mm {
	/* private info. If allocated, needs to be destroyed by the destroy
	   function */
	void *private;

	/* Allocate a memory block with given size and alignment.
	   Return an opaque reference to the memory block */

	void *(*allocate) (void *private, unsigned long size,
			   unsigned alignment);

	/* Free a memory block. "ref" is the opaque reference that we got from
	   the "alloc" function */

	void (*free) (void *private, void *ref);

	/* Free all resources associated with this allocator */

	void (*destroy) (void *private);

	/* Return a memory offset from the opaque reference returned from the
	   "alloc" function */

	unsigned long (*offset) (void *private, void *ref);
} drm_sman_mm_t;

typedef struct drm_memblock_item {
	struct list_head owner_list;
	drm_hash_item_t user_hash;
	void *mm_info;
	drm_sman_mm_t *mm;
	struct drm_sman *sman;
} drm_memblock_item_t;

typedef struct drm_sman {