2 * Copyright 2003 Eric Anholt
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
26 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
28 #elif defined(__FreeBSD__)
29 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
30 #elif defined(__NetBSD__)
31 static paddr_t DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
35 drm_device_dma_t *dma = dev->dma;
36 unsigned long physical;
39 if (dma == NULL || dma->pagelist == NULL)
42 page = offset >> PAGE_SHIFT;
43 physical = dma->pagelist[page];
45 DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", (long)offset, page, physical);
46 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
50 return atop(physical);
54 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
55 int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
57 #elif defined(__FreeBSD__)
58 int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
59 #elif defined(__NetBSD__)
60 paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot)
64 drm_local_map_t *map = NULL;
65 drm_map_list_entry_t *listentry = NULL;
68 DRM_GET_PRIV_WITH_RETURN(priv, (DRMFILE)DRM_CURRENTPID);
70 if (!priv->authenticated)
71 return DRM_ERR(EACCES);
75 && offset < ptoa(dev->dma->page_count))
76 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
77 return DRM(dma_mmap)(kdev, offset, paddr, prot);
79 return DRM(dma_mmap)(kdev, offset, prot);
82 /* A sequential search of a linked list is
83 fine here because: 1) there will only be
84 about 5-10 entries in the list and, 2) a
85 DRI client only has to do this mapping
86 once, so it doesn't have to be optimized
87 for performance, even if the list was a
89 TAILQ_FOREACH(listentry, dev->maplist, link) {
91 /* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1);*/
92 if (offset >= map->offset
93 && offset < map->offset + map->size) break;
97 DRM_DEBUG("can't find map\n");
100 if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) {
101 DRM_DEBUG("restricted map\n");
106 case _DRM_FRAME_BUFFER:
109 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
115 case _DRM_SCATTER_GATHER:
117 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
118 *paddr = vtophys(offset);
121 return atop(vtophys(offset));
124 return -1; /* This should never happen. */
126 DRM_DEBUG("bailing out\n");