1#ifndef __DRM_LEGACY_H__
  2#define __DRM_LEGACY_H__
  3
  4/*
  5 * Copyright (c) 2014 David Herrmann <dh.herrmann@gmail.com>
  6 *
  7 * Permission is hereby granted, free of charge, to any person obtaining a
  8 * copy of this software and associated documentation files (the "Software"),
  9 * to deal in the Software without restriction, including without limitation
 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 11 * and/or sell copies of the Software, and to permit persons to whom the
 12 * Software is furnished to do so, subject to the following conditions:
 13 *
 14 * The above copyright notice and this permission notice shall be included in
 15 * all copies or substantial portions of the Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 23 * OTHER DEALINGS IN THE SOFTWARE.
 24 */
 25
 26/*
 27 * This file contains legacy interfaces that modern drm drivers
 28 * should no longer be using. They cannot be removed as legacy
 29 * drivers use them, and removing them are API breaks.
 30 */
 31#include <linux/list.h>
 32
 33#include <drm/drm.h>
 34#include <drm/drm_device.h>
 35#include <drm/drm_legacy.h>
 36
 37struct agp_memory;
 38struct drm_device;
 39struct drm_file;
 40struct drm_buf_desc;
 41
 42/*
 43 * Generic DRM Contexts
 44 */
 45
 46#define DRM_KERNEL_CONTEXT		0
 47#define DRM_RESERVED_CONTEXTS		1
 48
 49#if IS_ENABLED(CONFIG_DRM_LEGACY)
 50void drm_legacy_ctxbitmap_init(struct drm_device *dev);
 51void drm_legacy_ctxbitmap_cleanup(struct drm_device *dev);
 52void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file);
 53#else
 54static inline void drm_legacy_ctxbitmap_init(struct drm_device *dev) {}
 55static inline void drm_legacy_ctxbitmap_cleanup(struct drm_device *dev) {}
 56static inline void drm_legacy_ctxbitmap_flush(struct drm_device *dev, struct drm_file *file) {}
 57#endif
 58
 59void drm_legacy_ctxbitmap_free(struct drm_device *dev, int ctx_handle);
 60
 61#if IS_ENABLED(CONFIG_DRM_LEGACY)
 62int drm_legacy_resctx(struct drm_device *d, void *v, struct drm_file *f);
 63int drm_legacy_addctx(struct drm_device *d, void *v, struct drm_file *f);
 64int drm_legacy_getctx(struct drm_device *d, void *v, struct drm_file *f);
 65int drm_legacy_switchctx(struct drm_device *d, void *v, struct drm_file *f);
 66int drm_legacy_newctx(struct drm_device *d, void *v, struct drm_file *f);
 67int drm_legacy_rmctx(struct drm_device *d, void *v, struct drm_file *f);
 68
 69int drm_legacy_setsareactx(struct drm_device *d, void *v, struct drm_file *f);
 70int drm_legacy_getsareactx(struct drm_device *d, void *v, struct drm_file *f);
 71#endif
 72
 73/*
 74 * Generic Buffer Management
 75 */
 76
 77#define DRM_MAP_HASH_OFFSET 0x10000000
 78
 79#if IS_ENABLED(CONFIG_DRM_LEGACY)
 80static inline int drm_legacy_create_map_hash(struct drm_device *dev)
 81{
 82	return drm_ht_create(&dev->map_hash, 12);
 83}
 84
 85static inline void drm_legacy_remove_map_hash(struct drm_device *dev)
 86{
 87	drm_ht_remove(&dev->map_hash);
 88}
 89#else
 90static inline int drm_legacy_create_map_hash(struct drm_device *dev)
 91{
 92	return 0;
 93}
 94
 95static inline void drm_legacy_remove_map_hash(struct drm_device *dev) {}
 96#endif
 97
 98
 99#if IS_ENABLED(CONFIG_DRM_LEGACY)
100int drm_legacy_getmap_ioctl(struct drm_device *dev, void *data,
101			    struct drm_file *file_priv);
102int drm_legacy_addmap_ioctl(struct drm_device *d, void *v, struct drm_file *f);
103int drm_legacy_rmmap_ioctl(struct drm_device *d, void *v, struct drm_file *f);
104
105int drm_legacy_addbufs(struct drm_device *d, void *v, struct drm_file *f);
106int drm_legacy_infobufs(struct drm_device *d, void *v, struct drm_file *f);
107int drm_legacy_markbufs(struct drm_device *d, void *v, struct drm_file *f);
108int drm_legacy_freebufs(struct drm_device *d, void *v, struct drm_file *f);
109int drm_legacy_mapbufs(struct drm_device *d, void *v, struct drm_file *f);
110int drm_legacy_dma_ioctl(struct drm_device *d, void *v, struct drm_file *f);
111#endif
112
113int __drm_legacy_infobufs(struct drm_device *, void *, int *,
114			  int (*)(void *, int, struct drm_buf_entry *));
115int __drm_legacy_mapbufs(struct drm_device *, void *, int *,
116			  void __user **,
117			  int (*)(void *, int, unsigned long, struct drm_buf *),
118			  struct drm_file *);
119
120#if IS_ENABLED(CONFIG_DRM_LEGACY)
121void drm_legacy_master_rmmaps(struct drm_device *dev,
122			      struct drm_master *master);
123void drm_legacy_rmmaps(struct drm_device *dev);
124#else
125static inline void drm_legacy_master_rmmaps(struct drm_device *dev,
126					    struct drm_master *master) {}
127static inline void drm_legacy_rmmaps(struct drm_device *dev) {}
128#endif
129
130#if IS_ENABLED(CONFIG_DRM_VM) && IS_ENABLED(CONFIG_DRM_LEGACY)
131void drm_legacy_vma_flush(struct drm_device *d);
132#else
133static inline void drm_legacy_vma_flush(struct drm_device *d)
134{
135	/* do nothing */
136}
137#endif
138
139/*
140 * AGP Support
141 */
142
143struct drm_agp_mem {
144	unsigned long handle;
145	struct agp_memory *memory;
146	unsigned long bound;
147	int pages;
148	struct list_head head;
149};
150
151/* drm_lock.c */
152#if IS_ENABLED(CONFIG_DRM_LEGACY)
153int drm_legacy_lock(struct drm_device *d, void *v, struct drm_file *f);
154int drm_legacy_unlock(struct drm_device *d, void *v, struct drm_file *f);
155void drm_legacy_lock_release(struct drm_device *dev, struct file *filp);
156#else
157static inline void drm_legacy_lock_release(struct drm_device *dev, struct file *filp) {}
158#endif
159
160/* DMA support */
161#if IS_ENABLED(CONFIG_DRM_LEGACY)
162int drm_legacy_dma_setup(struct drm_device *dev);
163void drm_legacy_dma_takedown(struct drm_device *dev);
164#else
165static inline int drm_legacy_dma_setup(struct drm_device *dev)
166{
167	return 0;
168}
169#endif
170
171void drm_legacy_free_buffer(struct drm_device *dev,
172			    struct drm_buf * buf);
173#if IS_ENABLED(CONFIG_DRM_LEGACY)
174void drm_legacy_reclaim_buffers(struct drm_device *dev,
175				struct drm_file *filp);
176#else
177static inline void drm_legacy_reclaim_buffers(struct drm_device *dev,
178					      struct drm_file *filp) {}
179#endif
180
181/* Scatter Gather Support */
182#if IS_ENABLED(CONFIG_DRM_LEGACY)
183void drm_legacy_sg_cleanup(struct drm_device *dev);
184int drm_legacy_sg_alloc(struct drm_device *dev, void *data,
185			struct drm_file *file_priv);
186int drm_legacy_sg_free(struct drm_device *dev, void *data,
187		       struct drm_file *file_priv);
188#endif
189
190#if IS_ENABLED(CONFIG_DRM_LEGACY)
191void drm_legacy_init_members(struct drm_device *dev);
192void drm_legacy_destroy_members(struct drm_device *dev);
193void drm_legacy_dev_reinit(struct drm_device *dev);
194int drm_legacy_setup(struct drm_device * dev);
195#else
196static inline void drm_legacy_init_members(struct drm_device *dev) {}
197static inline void drm_legacy_destroy_members(struct drm_device *dev) {}
198static inline void drm_legacy_dev_reinit(struct drm_device *dev) {}
199static inline int drm_legacy_setup(struct drm_device * dev) { return 0; }
200#endif
201
202#if IS_ENABLED(CONFIG_DRM_LEGACY)
203void drm_legacy_lock_master_cleanup(struct drm_device *dev, struct drm_master *master);
204#else
205static inline void drm_legacy_lock_master_cleanup(struct drm_device *dev, struct drm_master *master) {}
206#endif
207
208#if IS_ENABLED(CONFIG_DRM_LEGACY)
209void drm_master_legacy_init(struct drm_master *master);
210#else
211static inline void drm_master_legacy_init(struct drm_master *master) {}
212#endif
213
214#endif /* __DRM_LEGACY_H__ */