2 * $FreeBSD: src/sys/dev/drm/drm_vm.h,v 1.6.2.1 2003/04/26 07:05:29 anholt Exp $
5 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
6 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
8 #elif defined(__FreeBSD__)
9 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
10 #elif defined(__NetBSD__)
11 static paddr_t DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
15 drm_device_dma_t *dma = dev->dma;
16 unsigned long physical;
19 if (!dma) return -1; /* Error */
20 if (!dma->pagelist) return -1; /* Nothing allocated */
22 page = offset >> PAGE_SHIFT;
23 physical = dma->pagelist[page];
25 DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", (long)offset, page, physical);
26 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
30 return atop(physical);
34 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
35 int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
37 #elif defined(__FreeBSD__)
38 int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
39 #elif defined(__NetBSD__)
40 paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot)
44 drm_local_map_t *map = NULL;
45 drm_map_list_entry_t *listentry=NULL;
48 priv = DRM(find_file_by_proc)(dev, DRM_CURPROC);
50 DRM_DEBUG("can't find authenticator\n");
54 if (!priv->authenticated)
55 return DRM_ERR(EACCES);
59 && offset < ptoa(dev->dma->page_count))
60 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
61 return DRM(dma_mmap)(kdev, offset, paddr, prot);
63 return DRM(dma_mmap)(kdev, offset, prot);
66 /* A sequential search of a linked list is
67 fine here because: 1) there will only be
68 about 5-10 entries in the list and, 2) a
69 DRI client only has to do this mapping
70 once, so it doesn't have to be optimized
71 for performance, even if the list was a
73 TAILQ_FOREACH(listentry, dev->maplist, link) {
75 /* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1);*/
76 if (offset >= map->offset
77 && offset < map->offset + map->size) break;
81 DRM_DEBUG("can't find map\n");
84 if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) {
85 DRM_DEBUG("restricted map\n");
90 case _DRM_FRAME_BUFFER:
93 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
99 case _DRM_SCATTER_GATHER:
101 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
102 *paddr = vtophys(offset);
105 return atop(vtophys(offset));
108 return -1; /* This should never happen. */
110 DRM_DEBUG("bailing out\n");