xref: /dragonfly/sys/dev/drm/drm_memory.c (revision 31524921)
1 /*-
2  *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
3  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
4  * Copyright (c) 2011 The FreeBSD Foundation
5  * All rights reserved.
6  *
7  * Portions of this software were developed by Konstantin Belousov
8  * under sponsorship from the FreeBSD Foundation.
9  *
10  * Permission is hereby granted, free of charge, to any person obtaining a
11  * copy of this software and associated documentation files (the "Software"),
12  * to deal in the Software without restriction, including without limitation
13  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14  * and/or sell copies of the Software, and to permit persons to whom the
15  * Software is furnished to do so, subject to the following conditions:
16  *
17  * The above copyright notice and this permission notice (including the next
18  * paragraph) shall be included in all copies or substantial portions of the
19  * Software.
20  *
21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
24  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27  * OTHER DEALINGS IN THE SOFTWARE.
28  *
29  * Authors:
30  *    Rickard E. (Rik) Faith <faith@valinux.com>
31  *    Gareth Hughes <gareth@valinux.com>
32  *
33  */
34 
35 /** @file drm_memory.c
36  * Wrappers for kernel memory allocation routines, and MTRR management support.
37  *
38  * This file previously implemented a memory consumption tracking system using
39  * the "area" argument for various different types of allocations, but that
40  * has been stripped out for now.
41  */
42 
43 #include <drm/drmP.h>
44 #include "drm_legacy.h"
45 
46 #ifdef HAVE_PAGE_AGP
47 # include <asm/agp.h>
48 #else
49 # ifdef __powerpc__
50 #  define PAGE_AGP	__pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
51 # else
52 #  define PAGE_AGP	PAGE_KERNEL
53 # endif
54 #endif
55 
56 MALLOC_DEFINE(M_DRM, "m_drm", "DRM memory allocations");
57 
58 void drm_mem_init(void)
59 {
60 }
61 
62 void drm_mem_uninit(void)
63 {
64 }
65 
66 void *drm_ioremap_wc(struct drm_device *dev, drm_local_map_t *map)
67 {
68 	return pmap_mapdev_attr(map->offset, map->size, VM_MEMATTR_WRITE_COMBINING);
69 }
70 
71 void *drm_ioremap(struct drm_device *dev, drm_local_map_t *map)
72 {
73 	return pmap_mapdev(map->offset, map->size);
74 }
75 
76 void drm_ioremapfree(drm_local_map_t *map)
77 {
78 	pmap_unmapdev((vm_offset_t) map->handle, map->size);
79 }
80 
81 int
82 drm_mtrr_add(unsigned long offset, size_t size, int flags)
83 {
84 	int act;
85 	struct mem_range_desc mrdesc;
86 
87 	mrdesc.mr_base = offset;
88 	mrdesc.mr_len = size;
89 	mrdesc.mr_flags = flags;
90 	act = MEMRANGE_SET_UPDATE;
91 	strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
92 	return mem_range_attr_set(&mrdesc, &act);
93 }
94 
95 int
96 drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags)
97 {
98 	int act;
99 	struct mem_range_desc mrdesc;
100 
101 	mrdesc.mr_base = offset;
102 	mrdesc.mr_len = size;
103 	mrdesc.mr_flags = flags;
104 	act = MEMRANGE_SET_REMOVE;
105 	strlcpy(mrdesc.mr_owner, "drm", sizeof(mrdesc.mr_owner));
106 	return mem_range_attr_set(&mrdesc, &act);
107 }
108 
109 void
110 drm_clflush_pages(vm_page_t *pages, unsigned long num_pages)
111 {
112 
113 	pmap_invalidate_cache_pages(pages, num_pages);
114 }
115