122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/*-
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*Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rickard E. (Rik) Faith <faith@valinux.com>
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* Gareth Hughes <gareth@valinux.com>
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*
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*/
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/** @file drm_memory.c
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* Wrappers for kernel memory allocation routines, and MTRR management support.
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*
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* This file previously implemented a memory consumption tracking system using
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* the "area" argument for various different types of allocations, but that
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* has been stripped out for now.
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*/
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#include "drmP.h"
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MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures");
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void drm_mem_init(void)
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{
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}
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void drm_mem_uninit(void)
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{
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}
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void *drm_alloc(size_t size, int area)
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{
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return malloc(size, M_DRM, M_NOWAIT);
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}
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void *drm_calloc(size_t nmemb, size_t size, int area)
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{
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return malloc(size * nmemb, M_DRM, M_NOWAIT | M_ZERO);
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}
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void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
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{
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void *pt;
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pt = malloc(size, M_DRM, M_NOWAIT);
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if (pt == NULL)
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return NULL;
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if (oldpt && oldsize) {
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memcpy(pt, oldpt, DRM_MIN(oldsize,size));
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free(oldpt, M_DRM);
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}
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return pt;
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}
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void drm_free(void *pt, size_t size, int area)
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{
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free(pt, M_DRM);
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}
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void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map)
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{
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return pmap_mapdev_attr(map->offset, map->size, PAT_WRITE_COMBINING);
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}
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void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map)
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{
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return pmap_mapdev(map->offset, map->size);
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}
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void drm_ioremapfree(drm_local_map_t *map)
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{
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pmap_unmapdev((vm_offset_t) map->handle, map->size);
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}
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int
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drm_mtrr_add(unsigned long offset, size_t size, int flags)
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{
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int act;
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struct mem_range_desc mrdesc;
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mrdesc.mr_base = offset;
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mrdesc.mr_len = size;
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mrdesc.mr_flags = flags;
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act = MEMRANGE_SET_UPDATE;
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strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
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return mem_range_attr_set(&mrdesc, &act);
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}
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int
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drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags)
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{
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int act;
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struct mem_range_desc mrdesc;
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mrdesc.mr_base = offset;
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mrdesc.mr_len = size;
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mrdesc.mr_flags = flags;
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act = MEMRANGE_SET_REMOVE;
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strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
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return mem_range_attr_set(&mrdesc, &act);
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}
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