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 1.4 2006/07/28 02:17:36 dillon 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__)
10 static int DRM(dma_mmap)(struct dev_mmap_args *ap)
11 #elif defined(__FreeBSD__)
12 static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
13 #elif defined(__NetBSD__)
14 static paddr_t DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
18 dev_t kdev = ap->a_head.a_dev;
19 vm_offset_t offset = ap->a_offset;
22 drm_device_dma_t *dma = dev->dma;
23 unsigned long physical;
26 if (!dma) return -1; /* Error */
27 if (!dma->pagelist) return -1; /* Nothing allocated */
29 page = offset >> PAGE_SHIFT;
30 physical = dma->pagelist[page];
32 DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", (long)offset, page, physical);
33 #if defined(__DragonFly__)
34 ap->a_result = physical;
36 #elif defined(__FreeBSD__) && __FreeBSD_version >= 500102
40 return atop(physical);
44 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
45 int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
47 #elif defined(__DragonFly__)
48 int DRM(mmap)(struct dev_mmap_args *ap)
49 #elif defined(__NetBSD__)
50 paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot)
53 dev_t kdev = ap->a_head.a_dev;
55 drm_local_map_t *map = NULL;
56 drm_map_list_entry_t *listentry=NULL;
59 priv = DRM(find_file_by_proc)(dev, DRM_CURPROC);
61 DRM_DEBUG("can't find authenticator\n");
65 if (!priv->authenticated)
66 return DRM_ERR(EACCES);
70 && ap->a_offset < ptoa(dev->dma->page_count))
71 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
72 return DRM(dma_mmap)(kdev, offset, paddr, prot);
73 #elif defined(__DragonFly__)
74 return DRM(dma_mmap)(ap);
76 return DRM(dma_mmap)(kdev, ap->a_offset, ap->a_nprot);
79 /* A sequential search of a linked list is
80 fine here because: 1) there will only be
81 about 5-10 entries in the list and, 2) a
82 DRI client only has to do this mapping
83 once, so it doesn't have to be optimized
84 for performance, even if the list was a
86 TAILQ_FOREACH(listentry, dev->maplist, link) {
88 /* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1);*/
89 if (ap->a_offset >= map->offset
90 && ap->a_offset < map->offset + map->size) break;
94 DRM_DEBUG("can't find map\n");
97 if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) {
98 DRM_DEBUG("restricted map\n");
103 case _DRM_FRAME_BUFFER:
106 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
107 *paddr = ap->a_offset;
109 #elif defined(__DragonFly__)
110 ap->a_result = atop(ap->a_offset);
113 return atop(ap->a_offset);
115 case _DRM_SCATTER_GATHER:
117 #if defined(__FreeBSD__) && __FreeBSD_version >= 500102
118 *paddr = vtophys(ap->a_offset);
120 #elif defined(__DragonFly__)
121 ap->a_result = vtophys(ap->a_offset);
124 return atop(vtophys(ap->a_offset));
127 return EINVAL; /* This should never happen. */
129 DRM_DEBUG("bailing out\n");