| drm_vm.c (182080) | drm_vm.c (183573) |
|---|---|
| 1/*- 2 * Copyright 2003 Eric Anholt 3 * All Rights Reserved. 4 * 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, --- 8 unchanged lines hidden (view full) --- 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24#include <sys/cdefs.h> | 1/*- 2 * Copyright 2003 Eric Anholt 3 * All Rights Reserved. 4 * 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, --- 8 unchanged lines hidden (view full) --- 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24#include <sys/cdefs.h> |
| 25__FBSDID("$FreeBSD: head/sys/dev/drm/drm_vm.c 182080 2008-08-23 20:59:12Z rnoland $"); | 25__FBSDID("$FreeBSD: head/sys/dev/drm/drm_vm.c 183573 2008-10-03 16:59:11Z rnoland $"); |
| 26 27/** @file drm_vm.c 28 * Support code for mmaping of DRM maps. 29 */ 30 31#include "dev/drm/drmP.h" 32#include "dev/drm/drm.h" 33 | 26 27/** @file drm_vm.c 28 * Support code for mmaping of DRM maps. 29 */ 30 31#include "dev/drm/drmP.h" 32#include "dev/drm/drm.h" 33 |
| 34#if defined(__FreeBSD__) && __FreeBSD_version >= 500102 | |
| 35int drm_mmap(struct cdev *kdev, vm_offset_t offset, vm_paddr_t *paddr, 36 int prot) | 34int drm_mmap(struct cdev *kdev, vm_offset_t offset, vm_paddr_t *paddr, 35 int prot) |
| 37#elif defined(__FreeBSD__) 38int drm_mmap(dev_t kdev, vm_offset_t offset, int prot) 39#elif defined(__NetBSD__) || defined(__OpenBSD__) 40paddr_t drm_mmap(dev_t kdev, off_t offset, int prot) 41#endif | |
| 42{ 43 struct drm_device *dev = drm_get_device_from_kdev(kdev); | 36{ 37 struct drm_device *dev = drm_get_device_from_kdev(kdev); |
| 38 struct drm_file *file_priv = NULL; |
|
| 44 drm_local_map_t *map; | 39 drm_local_map_t *map; |
| 45 drm_file_t *priv; 46 drm_map_type_t type; 47#ifdef __FreeBSD__ | 40 enum drm_map_type type; |
| 48 vm_paddr_t phys; | 41 vm_paddr_t phys; |
| 49#else 50 paddr_t phys; 51#endif | 42 int error; |
| 52 | 43 |
| 53 DRM_LOCK(); 54 priv = drm_find_file_by_proc(dev, DRM_CURPROC); 55 DRM_UNLOCK(); 56 if (priv == NULL) { 57 DRM_ERROR("can't find authenticator\n"); | 44 /* d_mmap gets called twice, we can only reference file_priv during 45 * the first call. We need to assume that if error is EBADF the 46 * call was succesful and the client is authenticated. 47 */ 48 error = devfs_get_cdevpriv((void **)&file_priv); 49 if (error == ENOENT) { 50 DRM_ERROR("Could not find authenticator!\n"); |
| 58 return EINVAL; 59 } 60 | 51 return EINVAL; 52 } 53 |
| 61 if (!priv->authenticated) | 54 if (file_priv && !file_priv->authenticated) |
| 62 return EACCES; 63 64 if (dev->dma && offset >= 0 && offset < ptoa(dev->dma->page_count)) { 65 drm_device_dma_t *dma = dev->dma; 66 67 DRM_SPINLOCK(&dev->dma_lock); 68 69 if (dma->pagelist != NULL) { 70 unsigned long page = offset >> PAGE_SHIFT; 71 unsigned long phys = dma->pagelist[page]; 72 73 DRM_SPINUNLOCK(&dev->dma_lock); | 55 return EACCES; 56 57 if (dev->dma && offset >= 0 && offset < ptoa(dev->dma->page_count)) { 58 drm_device_dma_t *dma = dev->dma; 59 60 DRM_SPINLOCK(&dev->dma_lock); 61 62 if (dma->pagelist != NULL) { 63 unsigned long page = offset >> PAGE_SHIFT; 64 unsigned long phys = dma->pagelist[page]; 65 66 DRM_SPINUNLOCK(&dev->dma_lock); |
| 74#if defined(__FreeBSD__) && __FreeBSD_version >= 500102 | |
| 75 *paddr = phys; 76 return 0; | 67 *paddr = phys; 68 return 0; |
| 77#else 78 return atop(phys); 79#endif | |
| 80 } else { 81 DRM_SPINUNLOCK(&dev->dma_lock); 82 return -1; 83 } 84 } 85 86 /* A sequential search of a linked list is 87 fine here because: 1) there will only be --- 34 unchanged lines hidden (view full) --- 122 case _DRM_SHM: 123 phys = vtophys(offset); 124 break; 125 default: 126 DRM_ERROR("bad map type %d\n", type); 127 return -1; /* This should never happen. */ 128 } 129 | 69 } else { 70 DRM_SPINUNLOCK(&dev->dma_lock); 71 return -1; 72 } 73 } 74 75 /* A sequential search of a linked list is 76 fine here because: 1) there will only be --- 34 unchanged lines hidden (view full) --- 111 case _DRM_SHM: 112 phys = vtophys(offset); 113 break; 114 default: 115 DRM_ERROR("bad map type %d\n", type); 116 return -1; /* This should never happen. */ 117 } 118 |
| 130#if defined(__FreeBSD__) && __FreeBSD_version >= 500102 | |
| 131 *paddr = phys; 132 return 0; | 119 *paddr = phys; 120 return 0; |
| 133#else 134 return atop(phys); 135#endif | |
| 136} 137 | 121} 122 |