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4f03b1fc DV |
1 | #ifndef __DRM_DRM_LEGACY_H__ |
2 | #define __DRM_DRM_LEGACY_H__ | |
4f03b1fc DV |
3 | /* |
4 | * Legacy driver interfaces for the Direct Rendering Manager | |
5 | * | |
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. | |
9 | * All rights reserved. | |
10 | * Copyright © 2014 Intel Corporation | |
11 | * Daniel Vetter <daniel.vetter@ffwll.ch> | |
12 | * | |
13 | * Author: Rickard E. (Rik) Faith <faith@valinux.com> | |
14 | * Author: Gareth Hughes <gareth@valinux.com> | |
15 | * | |
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: | |
22 | * | |
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 | |
25 | * Software. | |
26 | * | |
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. | |
34 | */ | |
35 | ||
04dfe19a TZ |
36 | #include <linux/agp_backend.h> |
37 | ||
cbe932a3 SR |
38 | #include <drm/drm.h> |
39 | #include <drm/drm_auth.h> | |
cbe932a3 SR |
40 | |
41 | struct drm_device; | |
1be9d5f0 | 42 | struct drm_driver; |
cbe932a3 | 43 | struct file; |
1be9d5f0 | 44 | struct pci_driver; |
4f03b1fc DV |
45 | |
46 | /* | |
47 | * Legacy Support for palateontologic DRM drivers | |
48 | * | |
49 | * If you add a new driver and it uses any of these functions or structures, | |
50 | * you're doing it terribly wrong. | |
51 | */ | |
52 | ||
a21800bc TZ |
53 | /* |
54 | * Hash-table Support | |
55 | */ | |
56 | ||
57 | struct drm_hash_item { | |
58 | struct hlist_node head; | |
59 | unsigned long key; | |
60 | }; | |
61 | ||
62 | struct drm_open_hash { | |
63 | struct hlist_head *table; | |
64 | u8 order; | |
65 | }; | |
66 | ||
ba8286fa DV |
67 | /** |
68 | * DMA buffer. | |
69 | */ | |
70 | struct drm_buf { | |
71 | int idx; /**< Index into master buflist */ | |
72 | int total; /**< Buffer size */ | |
73 | int order; /**< log-base-2(total) */ | |
74 | int used; /**< Amount of buffer in use (for DMA) */ | |
75 | unsigned long offset; /**< Byte offset (used internally) */ | |
76 | void *address; /**< Address of buffer */ | |
77 | unsigned long bus_address; /**< Bus address of buffer */ | |
78 | struct drm_buf *next; /**< Kernel-only: used for free list */ | |
79 | __volatile__ int waiting; /**< On kernel DMA queue */ | |
80 | __volatile__ int pending; /**< On hardware DMA queue */ | |
81 | struct drm_file *file_priv; /**< Private of holding file descr */ | |
82 | int context; /**< Kernel queue for this buffer */ | |
83 | int while_locked; /**< Dispatch this buffer while locked */ | |
84 | enum { | |
85 | DRM_LIST_NONE = 0, | |
86 | DRM_LIST_FREE = 1, | |
87 | DRM_LIST_WAIT = 2, | |
88 | DRM_LIST_PEND = 3, | |
89 | DRM_LIST_PRIO = 4, | |
90 | DRM_LIST_RECLAIM = 5 | |
91 | } list; /**< Which list we're on */ | |
92 | ||
93 | int dev_priv_size; /**< Size of buffer private storage */ | |
94 | void *dev_private; /**< Per-buffer private storage */ | |
95 | }; | |
96 | ||
97 | typedef struct drm_dma_handle { | |
98 | dma_addr_t busaddr; | |
99 | void *vaddr; | |
100 | size_t size; | |
101 | } drm_dma_handle_t; | |
102 | ||
103 | /** | |
104 | * Buffer entry. There is one of this for each buffer size order. | |
105 | */ | |
106 | struct drm_buf_entry { | |
107 | int buf_size; /**< size */ | |
108 | int buf_count; /**< number of buffers */ | |
109 | struct drm_buf *buflist; /**< buffer list */ | |
110 | int seg_count; | |
111 | int page_order; | |
112 | struct drm_dma_handle **seglist; | |
113 | ||
114 | int low_mark; /**< Low water mark */ | |
115 | int high_mark; /**< High water mark */ | |
116 | }; | |
117 | ||
118 | /** | |
119 | * DMA data. | |
120 | */ | |
121 | struct drm_device_dma { | |
122 | ||
123 | struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ | |
124 | int buf_count; /**< total number of buffers */ | |
125 | struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ | |
126 | int seg_count; | |
127 | int page_count; /**< number of pages */ | |
128 | unsigned long *pagelist; /**< page list */ | |
129 | unsigned long byte_count; | |
130 | enum { | |
131 | _DRM_DMA_USE_AGP = 0x01, | |
132 | _DRM_DMA_USE_SG = 0x02, | |
133 | _DRM_DMA_USE_FB = 0x04, | |
134 | _DRM_DMA_USE_PCI_RO = 0x08 | |
135 | } flags; | |
136 | ||
137 | }; | |
138 | ||
139 | /** | |
140 | * Scatter-gather memory. | |
141 | */ | |
142 | struct drm_sg_mem { | |
143 | unsigned long handle; | |
144 | void *virtual; | |
145 | int pages; | |
146 | struct page **pagelist; | |
147 | dma_addr_t *busaddr; | |
148 | }; | |
149 | ||
150 | /** | |
151 | * Kernel side of a mapping | |
152 | */ | |
153 | struct drm_local_map { | |
b2ecb89c | 154 | dma_addr_t offset; /**< Requested physical address (0 for SAREA)*/ |
ba8286fa DV |
155 | unsigned long size; /**< Requested physical size (bytes) */ |
156 | enum drm_map_type type; /**< Type of memory to map */ | |
157 | enum drm_map_flags flags; /**< Flags */ | |
158 | void *handle; /**< User-space: "Handle" to pass to mmap() */ | |
159 | /**< Kernel-space: kernel-virtual address */ | |
160 | int mtrr; /**< MTRR slot used */ | |
161 | }; | |
162 | ||
163 | typedef struct drm_local_map drm_local_map_t; | |
164 | ||
165 | /** | |
166 | * Mappings list | |
167 | */ | |
168 | struct drm_map_list { | |
169 | struct list_head head; /**< list head */ | |
170 | struct drm_hash_item hash; | |
171 | struct drm_local_map *map; /**< mapping */ | |
172 | uint64_t user_token; | |
173 | struct drm_master *master; | |
174 | }; | |
175 | ||
4f03b1fc DV |
176 | int drm_legacy_addmap(struct drm_device *d, resource_size_t offset, |
177 | unsigned int size, enum drm_map_type type, | |
178 | enum drm_map_flags flags, struct drm_local_map **map_p); | |
c7642688 | 179 | struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, unsigned int token); |
40647e45 | 180 | void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map); |
4f03b1fc DV |
181 | int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map); |
182 | struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev); | |
bfbf3c85 | 183 | int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma); |
4f03b1fc DV |
184 | |
185 | int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req); | |
186 | int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req); | |
187 | ||
8f1a2c8d DV |
188 | /** |
189 | * Test that the hardware lock is held by the caller, returning otherwise. | |
190 | * | |
191 | * \param dev DRM device. | |
192 | * \param filp file pointer of the caller. | |
193 | */ | |
194 | #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ | |
195 | do { \ | |
196 | if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ | |
197 | _file_priv->master->lock.file_priv != _file_priv) { \ | |
198 | DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ | |
199 | __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ | |
200 | _file_priv->master->lock.file_priv, _file_priv); \ | |
201 | return -EINVAL; \ | |
202 | } \ | |
203 | } while (0) | |
204 | ||
4f03b1fc DV |
205 | void drm_legacy_idlelock_take(struct drm_lock_data *lock); |
206 | void drm_legacy_idlelock_release(struct drm_lock_data *lock); | |
207 | ||
c1736b90 TZ |
208 | /* drm_irq.c */ |
209 | int drm_legacy_irq_uninstall(struct drm_device *dev); | |
210 | ||
1be9d5f0 TZ |
211 | /* drm_pci.c */ |
212 | ||
213 | #ifdef CONFIG_PCI | |
214 | ||
b1dda997 LP |
215 | int drm_legacy_pci_init(const struct drm_driver *driver, |
216 | struct pci_driver *pdriver); | |
217 | void drm_legacy_pci_exit(const struct drm_driver *driver, | |
218 | struct pci_driver *pdriver); | |
1be9d5f0 TZ |
219 | |
220 | #else | |
221 | ||
33775336 DV |
222 | static inline struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, |
223 | size_t size, size_t align) | |
224 | { | |
225 | return NULL; | |
226 | } | |
227 | ||
228 | static inline void drm_pci_free(struct drm_device *dev, | |
229 | struct drm_dma_handle *dmah) | |
230 | { | |
231 | } | |
232 | ||
b1dda997 | 233 | static inline int drm_legacy_pci_init(const struct drm_driver *driver, |
1be9d5f0 TZ |
234 | struct pci_driver *pdriver) |
235 | { | |
236 | return -EINVAL; | |
237 | } | |
238 | ||
b1dda997 | 239 | static inline void drm_legacy_pci_exit(const struct drm_driver *driver, |
1be9d5f0 TZ |
240 | struct pci_driver *pdriver) |
241 | { | |
242 | } | |
243 | ||
244 | #endif | |
1c96e84e | 245 | |
04dfe19a TZ |
246 | /* |
247 | * AGP Support | |
248 | */ | |
249 | ||
250 | struct drm_agp_head { | |
251 | struct agp_kern_info agp_info; | |
252 | struct list_head memory; | |
253 | unsigned long mode; | |
254 | struct agp_bridge_data *bridge; | |
255 | int enabled; | |
256 | int acquired; | |
257 | unsigned long base; | |
258 | int agp_mtrr; | |
259 | int cant_use_aperture; | |
260 | unsigned long page_mask; | |
261 | }; | |
262 | ||
263 | #if IS_ENABLED(CONFIG_DRM_LEGACY) && IS_ENABLED(CONFIG_AGP) | |
264 | struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev); | |
265 | int drm_legacy_agp_acquire(struct drm_device *dev); | |
266 | int drm_legacy_agp_release(struct drm_device *dev); | |
267 | int drm_legacy_agp_enable(struct drm_device *dev, struct drm_agp_mode mode); | |
268 | int drm_legacy_agp_info(struct drm_device *dev, struct drm_agp_info *info); | |
269 | int drm_legacy_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request); | |
270 | int drm_legacy_agp_free(struct drm_device *dev, struct drm_agp_buffer *request); | |
271 | int drm_legacy_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request); | |
272 | int drm_legacy_agp_bind(struct drm_device *dev, struct drm_agp_binding *request); | |
273 | #else | |
274 | static inline struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev) | |
275 | { | |
276 | return NULL; | |
277 | } | |
278 | ||
279 | static inline int drm_legacy_agp_acquire(struct drm_device *dev) | |
280 | { | |
281 | return -ENODEV; | |
282 | } | |
283 | ||
284 | static inline int drm_legacy_agp_release(struct drm_device *dev) | |
285 | { | |
286 | return -ENODEV; | |
287 | } | |
288 | ||
289 | static inline int drm_legacy_agp_enable(struct drm_device *dev, | |
290 | struct drm_agp_mode mode) | |
291 | { | |
292 | return -ENODEV; | |
293 | } | |
294 | ||
295 | static inline int drm_legacy_agp_info(struct drm_device *dev, | |
296 | struct drm_agp_info *info) | |
297 | { | |
298 | return -ENODEV; | |
299 | } | |
300 | ||
301 | static inline int drm_legacy_agp_alloc(struct drm_device *dev, | |
302 | struct drm_agp_buffer *request) | |
303 | { | |
304 | return -ENODEV; | |
305 | } | |
306 | ||
307 | static inline int drm_legacy_agp_free(struct drm_device *dev, | |
308 | struct drm_agp_buffer *request) | |
309 | { | |
310 | return -ENODEV; | |
311 | } | |
312 | ||
313 | static inline int drm_legacy_agp_unbind(struct drm_device *dev, | |
314 | struct drm_agp_binding *request) | |
315 | { | |
316 | return -ENODEV; | |
317 | } | |
318 | ||
319 | static inline int drm_legacy_agp_bind(struct drm_device *dev, | |
320 | struct drm_agp_binding *request) | |
321 | { | |
322 | return -ENODEV; | |
323 | } | |
324 | #endif | |
325 | ||
86c1fbd5 DV |
326 | /* drm_memory.c */ |
327 | void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev); | |
328 | void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev); | |
329 | void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev); | |
330 | ||
4f03b1fc | 331 | #endif /* __DRM_DRM_LEGACY_H__ */ |