2 * $FreeBSD: src/sys/dev/drm/drm_vm.h,v 1.6.2.1 2003/04/26 07:05:29 anholt Exp $
3 * $DragonFly: src/sys/dev/drm/Attic/drm_vm.h,v 1.3 2004/02/13 01:23:57 joerg Exp $
6 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
7 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
9 #elif defined(__DragonFly__) || defined(__FreeBSD__)
10 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
11 #elif defined(__NetBSD__)
12 static paddr_t DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
16 drm_device_dma_t *dma = dev->dma;
17 unsigned long physical;
20 if (!dma) return -1; /* Error */
21 if (!dma->pagelist) return -1; /* Nothing allocated */
23 page = offset >> PAGE_SHIFT;
24 physical = dma->pagelist[page];
26 DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", (long)offset, page, physical);
27 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
31 return atop(physical);
35 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
36 int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
38 #elif defined(__DragonFly__) || defined(__FreeBSD__)
39 int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
40 #elif defined(__NetBSD__)
41 paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot)
45 drm_local_map_t *map = NULL;
46 drm_map_list_entry_t *listentry=NULL;
49 priv = DRM(find_file_by_proc)(dev, DRM_CURPROC);
51 DRM_DEBUG("can't find authenticator\n");
55 if (!priv->authenticated)
56 return DRM_ERR(EACCES);
60 && offset < ptoa(dev->dma->page_count))
61 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
62 return DRM(dma_mmap)(kdev, offset, paddr, prot);
64 return DRM(dma_mmap)(kdev, offset, prot);
67 /* A sequential search of a linked list is
68 fine here because: 1) there will only be
69 about 5-10 entries in the list and, 2) a
70 DRI client only has to do this mapping
71 once, so it doesn't have to be optimized
72 for performance, even if the list was a
74 TAILQ_FOREACH(listentry, dev->maplist, link) {
76 /* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1);*/
77 if (offset >= map->offset
78 && offset < map->offset + map->size) break;
82 DRM_DEBUG("can't find map\n");
85 if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) {
86 DRM_DEBUG("restricted map\n");
91 case _DRM_FRAME_BUFFER:
94 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
100 case _DRM_SCATTER_GATHER:
102 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
103 *paddr = vtophys(offset);
106 return atop(vtophys(offset));
109 return -1; /* This should never happen. */
111 DRM_DEBUG("bailing out\n");