1 #ifndef __DRM_DRM_LEGACY_H__
2 #define __DRM_DRM_LEGACY_H__
4 * Legacy driver interfaces for the Direct Rendering Manager
6 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
7 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
8 * Copyright (c) 2009-2010, Code Aurora Forum.
10 * Copyright © 2014 Intel Corporation
11 * Daniel Vetter <daniel.vetter@ffwll.ch>
13 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
14 * Author: Gareth Hughes <gareth@valinux.com>
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
23 * The above copyright notice and this permission notice (including the next
24 * paragraph) shall be included in all copies or substantial portions of the
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
33 * OTHER DEALINGS IN THE SOFTWARE.
36 #include <linux/agp_backend.h>
39 #include <drm/drm_auth.h>
40 #include <drm/drm_hashtab.h>
48 * Legacy Support for palateontologic DRM drivers
50 * If you add a new driver and it uses any of these functions or structures,
51 * you're doing it terribly wrong.
58 int idx; /**< Index into master buflist */
59 int total; /**< Buffer size */
60 int order; /**< log-base-2(total) */
61 int used; /**< Amount of buffer in use (for DMA) */
62 unsigned long offset; /**< Byte offset (used internally) */
63 void *address; /**< Address of buffer */
64 unsigned long bus_address; /**< Bus address of buffer */
65 struct drm_buf *next; /**< Kernel-only: used for free list */
66 __volatile__ int waiting; /**< On kernel DMA queue */
67 __volatile__ int pending; /**< On hardware DMA queue */
68 struct drm_file *file_priv; /**< Private of holding file descr */
69 int context; /**< Kernel queue for this buffer */
70 int while_locked; /**< Dispatch this buffer while locked */
78 } list; /**< Which list we're on */
80 int dev_priv_size; /**< Size of buffer private storage */
81 void *dev_private; /**< Per-buffer private storage */
84 typedef struct drm_dma_handle {
91 * Buffer entry. There is one of this for each buffer size order.
93 struct drm_buf_entry {
94 int buf_size; /**< size */
95 int buf_count; /**< number of buffers */
96 struct drm_buf *buflist; /**< buffer list */
99 struct drm_dma_handle **seglist;
101 int low_mark; /**< Low water mark */
102 int high_mark; /**< High water mark */
108 struct drm_device_dma {
110 struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
111 int buf_count; /**< total number of buffers */
112 struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
114 int page_count; /**< number of pages */
115 unsigned long *pagelist; /**< page list */
116 unsigned long byte_count;
118 _DRM_DMA_USE_AGP = 0x01,
119 _DRM_DMA_USE_SG = 0x02,
120 _DRM_DMA_USE_FB = 0x04,
121 _DRM_DMA_USE_PCI_RO = 0x08
127 * Scatter-gather memory.
130 unsigned long handle;
133 struct page **pagelist;
138 * Kernel side of a mapping
140 struct drm_local_map {
141 dma_addr_t offset; /**< Requested physical address (0 for SAREA)*/
142 unsigned long size; /**< Requested physical size (bytes) */
143 enum drm_map_type type; /**< Type of memory to map */
144 enum drm_map_flags flags; /**< Flags */
145 void *handle; /**< User-space: "Handle" to pass to mmap() */
146 /**< Kernel-space: kernel-virtual address */
147 int mtrr; /**< MTRR slot used */
150 typedef struct drm_local_map drm_local_map_t;
155 struct drm_map_list {
156 struct list_head head; /**< list head */
157 struct drm_hash_item hash;
158 struct drm_local_map *map; /**< mapping */
160 struct drm_master *master;
163 int drm_legacy_addmap(struct drm_device *d, resource_size_t offset,
164 unsigned int size, enum drm_map_type type,
165 enum drm_map_flags flags, struct drm_local_map **map_p);
166 struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, unsigned int token);
167 void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map);
168 int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map);
169 struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev);
170 int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma);
172 int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req);
173 int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req);
176 * Test that the hardware lock is held by the caller, returning otherwise.
178 * \param dev DRM device.
179 * \param filp file pointer of the caller.
181 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
183 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
184 _file_priv->master->lock.file_priv != _file_priv) { \
185 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
186 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
187 _file_priv->master->lock.file_priv, _file_priv); \
192 void drm_legacy_idlelock_take(struct drm_lock_data *lock);
193 void drm_legacy_idlelock_release(struct drm_lock_data *lock);
196 int drm_legacy_irq_uninstall(struct drm_device *dev);
202 int drm_legacy_pci_init(const struct drm_driver *driver,
203 struct pci_driver *pdriver);
204 void drm_legacy_pci_exit(const struct drm_driver *driver,
205 struct pci_driver *pdriver);
209 static inline struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev,
210 size_t size, size_t align)
215 static inline void drm_pci_free(struct drm_device *dev,
216 struct drm_dma_handle *dmah)
220 static inline int drm_legacy_pci_init(const struct drm_driver *driver,
221 struct pci_driver *pdriver)
226 static inline void drm_legacy_pci_exit(const struct drm_driver *driver,
227 struct pci_driver *pdriver)
237 struct drm_agp_head {
238 struct agp_kern_info agp_info;
239 struct list_head memory;
241 struct agp_bridge_data *bridge;
246 int cant_use_aperture;
247 unsigned long page_mask;
250 #if IS_ENABLED(CONFIG_DRM_LEGACY) && IS_ENABLED(CONFIG_AGP)
251 struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev);
252 int drm_legacy_agp_acquire(struct drm_device *dev);
253 int drm_legacy_agp_release(struct drm_device *dev);
254 int drm_legacy_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
255 int drm_legacy_agp_info(struct drm_device *dev, struct drm_agp_info *info);
256 int drm_legacy_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
257 int drm_legacy_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
258 int drm_legacy_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
259 int drm_legacy_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
261 static inline struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev)
266 static inline int drm_legacy_agp_acquire(struct drm_device *dev)
271 static inline int drm_legacy_agp_release(struct drm_device *dev)
276 static inline int drm_legacy_agp_enable(struct drm_device *dev,
277 struct drm_agp_mode mode)
282 static inline int drm_legacy_agp_info(struct drm_device *dev,
283 struct drm_agp_info *info)
288 static inline int drm_legacy_agp_alloc(struct drm_device *dev,
289 struct drm_agp_buffer *request)
294 static inline int drm_legacy_agp_free(struct drm_device *dev,
295 struct drm_agp_buffer *request)
300 static inline int drm_legacy_agp_unbind(struct drm_device *dev,
301 struct drm_agp_binding *request)
306 static inline int drm_legacy_agp_bind(struct drm_device *dev,
307 struct drm_agp_binding *request)
314 void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev);
315 void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
316 void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
318 #endif /* __DRM_DRM_LEGACY_H__ */