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Diffstat (limited to 'sys/dev/drm/drm_vm.c')
-rw-r--r--sys/dev/drm/drm_vm.c133
1 files changed, 0 insertions, 133 deletions
diff --git a/sys/dev/drm/drm_vm.c b/sys/dev/drm/drm_vm.c
deleted file mode 100644
index 4810343b3a077..0000000000000
--- a/sys/dev/drm/drm_vm.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*-
- * Copyright 2003 Eric Anholt
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
- * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/** @file drm_vm.c
- * Support code for mmaping of DRM maps.
- */
-
-#include "dev/drm/drmP.h"
-#include "dev/drm/drm.h"
-
-int drm_mmap(struct cdev *kdev, vm_ooffset_t offset, vm_paddr_t *paddr,
- int prot, vm_memattr_t *memattr)
-{
- struct drm_device *dev = drm_get_device_from_kdev(kdev);
- struct drm_file *file_priv = NULL;
- drm_local_map_t *map;
- enum drm_map_type type;
- vm_paddr_t phys;
- int error;
-
- /* d_mmap gets called twice, we can only reference file_priv during
- * the first call. We need to assume that if error is EBADF the
- * call was successful and the client is authenticated.
- */
- error = devfs_get_cdevpriv((void **)&file_priv);
- if (error == ENOENT) {
- DRM_ERROR("Could not find authenticator!\n");
- return EINVAL;
- }
-
- if (file_priv && !file_priv->authenticated)
- return EACCES;
-
- DRM_DEBUG("called with offset %016jx\n", offset);
- if (dev->dma && offset < ptoa(dev->dma->page_count)) {
- drm_device_dma_t *dma = dev->dma;
-
- DRM_SPINLOCK(&dev->dma_lock);
-
- if (dma->pagelist != NULL) {
- unsigned long page = offset >> PAGE_SHIFT;
- unsigned long phys = dma->pagelist[page];
-
- DRM_SPINUNLOCK(&dev->dma_lock);
- *paddr = phys;
- return 0;
- } else {
- DRM_SPINUNLOCK(&dev->dma_lock);
- return -1;
- }
- }
-
- /* A sequential search of a linked list is
- fine here because: 1) there will only be
- about 5-10 entries in the list and, 2) a
- DRI client only has to do this mapping
- once, so it doesn't have to be optimized
- for performance, even if the list was a
- bit longer.
- */
- DRM_LOCK();
- TAILQ_FOREACH(map, &dev->maplist, link) {
- if (offset >> DRM_MAP_HANDLE_SHIFT ==
- (unsigned long)map->handle >> DRM_MAP_HANDLE_SHIFT)
- break;
- }
-
- if (map == NULL) {
- DRM_DEBUG("Can't find map, request offset = %016jx\n", offset);
- TAILQ_FOREACH(map, &dev->maplist, link) {
- DRM_DEBUG("map offset = %016lx, handle = %016lx\n",
- map->offset, (unsigned long)map->handle);
- }
- DRM_UNLOCK();
- return -1;
- }
- if (((map->flags & _DRM_RESTRICTED) && !DRM_SUSER(DRM_CURPROC))) {
- DRM_UNLOCK();
- DRM_DEBUG("restricted map\n");
- return -1;
- }
- type = map->type;
- DRM_UNLOCK();
-
- offset = offset & ((1ULL << DRM_MAP_HANDLE_SHIFT) - 1);
-
- switch (type) {
- case _DRM_FRAME_BUFFER:
- case _DRM_AGP:
- *memattr = VM_MEMATTR_WRITE_COMBINING;
- /* FALLTHROUGH */
- case _DRM_REGISTERS:
- phys = map->offset + offset;
- break;
- case _DRM_SCATTER_GATHER:
- *memattr = VM_MEMATTR_WRITE_COMBINING;
- /* FALLTHROUGH */
- case _DRM_CONSISTENT:
- case _DRM_SHM:
- phys = vtophys((char *)map->virtual + offset);
- break;
- default:
- DRM_ERROR("bad map type %d\n", type);
- return -1; /* This should never happen. */
- }
-
- *paddr = phys;
- return 0;
-}
-