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1 | /* | |
2 | * Copyright (c) 2009-2013, NVIDIA Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
17 | */ | |
18 | ||
19 | #ifndef __LINUX_HOST1X_H | |
20 | #define __LINUX_HOST1X_H | |
21 | ||
22 | #include <linux/device.h> | |
23 | #include <linux/types.h> | |
24 | ||
25 | enum host1x_class { | |
26 | HOST1X_CLASS_HOST1X = 0x1, | |
27 | HOST1X_CLASS_GR2D = 0x51, | |
28 | HOST1X_CLASS_GR2D_SB = 0x52, | |
29 | HOST1X_CLASS_GR3D = 0x60, | |
30 | }; | |
31 | ||
32 | struct host1x_client; | |
33 | ||
34 | struct host1x_client_ops { | |
35 | int (*init)(struct host1x_client *client); | |
36 | int (*exit)(struct host1x_client *client); | |
37 | }; | |
38 | ||
39 | struct host1x_client { | |
40 | struct list_head list; | |
41 | struct device *parent; | |
42 | struct device *dev; | |
43 | ||
44 | const struct host1x_client_ops *ops; | |
45 | ||
46 | enum host1x_class class; | |
47 | struct host1x_channel *channel; | |
48 | ||
49 | struct host1x_syncpt **syncpts; | |
50 | unsigned int num_syncpts; | |
51 | }; | |
52 | ||
53 | /* | |
54 | * host1x buffer objects | |
55 | */ | |
56 | ||
57 | struct host1x_bo; | |
58 | struct sg_table; | |
59 | ||
60 | struct host1x_bo_ops { | |
61 | struct host1x_bo *(*get)(struct host1x_bo *bo); | |
62 | void (*put)(struct host1x_bo *bo); | |
63 | dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt); | |
64 | void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt); | |
65 | void *(*mmap)(struct host1x_bo *bo); | |
66 | void (*munmap)(struct host1x_bo *bo, void *addr); | |
67 | void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum); | |
68 | void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr); | |
69 | }; | |
70 | ||
71 | struct host1x_bo { | |
72 | const struct host1x_bo_ops *ops; | |
73 | }; | |
74 | ||
75 | static inline void host1x_bo_init(struct host1x_bo *bo, | |
76 | const struct host1x_bo_ops *ops) | |
77 | { | |
78 | bo->ops = ops; | |
79 | } | |
80 | ||
81 | static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo) | |
82 | { | |
83 | return bo->ops->get(bo); | |
84 | } | |
85 | ||
86 | static inline void host1x_bo_put(struct host1x_bo *bo) | |
87 | { | |
88 | bo->ops->put(bo); | |
89 | } | |
90 | ||
91 | static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo, | |
92 | struct sg_table **sgt) | |
93 | { | |
94 | return bo->ops->pin(bo, sgt); | |
95 | } | |
96 | ||
97 | static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt) | |
98 | { | |
99 | bo->ops->unpin(bo, sgt); | |
100 | } | |
101 | ||
102 | static inline void *host1x_bo_mmap(struct host1x_bo *bo) | |
103 | { | |
104 | return bo->ops->mmap(bo); | |
105 | } | |
106 | ||
107 | static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr) | |
108 | { | |
109 | bo->ops->munmap(bo, addr); | |
110 | } | |
111 | ||
112 | static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum) | |
113 | { | |
114 | return bo->ops->kmap(bo, pagenum); | |
115 | } | |
116 | ||
117 | static inline void host1x_bo_kunmap(struct host1x_bo *bo, | |
118 | unsigned int pagenum, void *addr) | |
119 | { | |
120 | bo->ops->kunmap(bo, pagenum, addr); | |
121 | } | |
122 | ||
123 | /* | |
124 | * host1x syncpoints | |
125 | */ | |
126 | ||
127 | #define HOST1X_SYNCPT_CLIENT_MANAGED (1 << 0) | |
128 | #define HOST1X_SYNCPT_HAS_BASE (1 << 1) | |
129 | ||
130 | struct host1x_syncpt_base; | |
131 | struct host1x_syncpt; | |
132 | struct host1x; | |
133 | ||
134 | struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id); | |
135 | u32 host1x_syncpt_id(struct host1x_syncpt *sp); | |
136 | u32 host1x_syncpt_read_min(struct host1x_syncpt *sp); | |
137 | u32 host1x_syncpt_read_max(struct host1x_syncpt *sp); | |
138 | u32 host1x_syncpt_read(struct host1x_syncpt *sp); | |
139 | int host1x_syncpt_incr(struct host1x_syncpt *sp); | |
140 | u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs); | |
141 | int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, | |
142 | u32 *value); | |
143 | struct host1x_syncpt *host1x_syncpt_request(struct device *dev, | |
144 | unsigned long flags); | |
145 | void host1x_syncpt_free(struct host1x_syncpt *sp); | |
146 | ||
147 | struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp); | |
148 | u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base); | |
149 | ||
150 | /* | |
151 | * host1x channel | |
152 | */ | |
153 | ||
154 | struct host1x_channel; | |
155 | struct host1x_job; | |
156 | ||
157 | struct host1x_channel *host1x_channel_request(struct device *dev); | |
158 | void host1x_channel_free(struct host1x_channel *channel); | |
159 | struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); | |
160 | void host1x_channel_put(struct host1x_channel *channel); | |
161 | int host1x_job_submit(struct host1x_job *job); | |
162 | ||
163 | /* | |
164 | * host1x job | |
165 | */ | |
166 | ||
167 | struct host1x_reloc { | |
168 | struct { | |
169 | struct host1x_bo *bo; | |
170 | unsigned long offset; | |
171 | } cmdbuf; | |
172 | struct { | |
173 | struct host1x_bo *bo; | |
174 | unsigned long offset; | |
175 | } target; | |
176 | unsigned long shift; | |
177 | }; | |
178 | ||
179 | struct host1x_job { | |
180 | /* When refcount goes to zero, job can be freed */ | |
181 | struct kref ref; | |
182 | ||
183 | /* List entry */ | |
184 | struct list_head list; | |
185 | ||
186 | /* Channel where job is submitted to */ | |
187 | struct host1x_channel *channel; | |
188 | ||
189 | u32 client; | |
190 | ||
191 | /* Gathers and their memory */ | |
192 | struct host1x_job_gather *gathers; | |
193 | unsigned int num_gathers; | |
194 | ||
195 | /* Wait checks to be processed at submit time */ | |
196 | struct host1x_waitchk *waitchk; | |
197 | unsigned int num_waitchk; | |
198 | u32 waitchk_mask; | |
199 | ||
200 | /* Array of handles to be pinned & unpinned */ | |
201 | struct host1x_reloc *relocarray; | |
202 | unsigned int num_relocs; | |
203 | struct host1x_job_unpin_data *unpins; | |
204 | unsigned int num_unpins; | |
205 | ||
206 | dma_addr_t *addr_phys; | |
207 | dma_addr_t *gather_addr_phys; | |
208 | dma_addr_t *reloc_addr_phys; | |
209 | ||
210 | /* Sync point id, number of increments and end related to the submit */ | |
211 | u32 syncpt_id; | |
212 | u32 syncpt_incrs; | |
213 | u32 syncpt_end; | |
214 | ||
215 | /* Maximum time to wait for this job */ | |
216 | unsigned int timeout; | |
217 | ||
218 | /* Index and number of slots used in the push buffer */ | |
219 | unsigned int first_get; | |
220 | unsigned int num_slots; | |
221 | ||
222 | /* Copy of gathers */ | |
223 | size_t gather_copy_size; | |
224 | dma_addr_t gather_copy; | |
225 | u8 *gather_copy_mapped; | |
226 | ||
227 | /* Check if register is marked as an address reg */ | |
228 | int (*is_addr_reg)(struct device *dev, u32 reg, u32 class); | |
229 | ||
230 | /* Request a SETCLASS to this class */ | |
231 | u32 class; | |
232 | ||
233 | /* Add a channel wait for previous ops to complete */ | |
234 | bool serialize; | |
235 | }; | |
236 | ||
237 | struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, | |
238 | u32 num_cmdbufs, u32 num_relocs, | |
239 | u32 num_waitchks); | |
240 | void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id, | |
241 | u32 words, u32 offset); | |
242 | struct host1x_job *host1x_job_get(struct host1x_job *job); | |
243 | void host1x_job_put(struct host1x_job *job); | |
244 | int host1x_job_pin(struct host1x_job *job, struct device *dev); | |
245 | void host1x_job_unpin(struct host1x_job *job); | |
246 | ||
247 | /* | |
248 | * subdevice probe infrastructure | |
249 | */ | |
250 | ||
251 | struct host1x_device; | |
252 | ||
253 | struct host1x_driver { | |
254 | struct device_driver driver; | |
255 | ||
256 | const struct of_device_id *subdevs; | |
257 | struct list_head list; | |
258 | ||
259 | int (*probe)(struct host1x_device *device); | |
260 | int (*remove)(struct host1x_device *device); | |
261 | void (*shutdown)(struct host1x_device *device); | |
262 | }; | |
263 | ||
264 | static inline struct host1x_driver * | |
265 | to_host1x_driver(struct device_driver *driver) | |
266 | { | |
267 | return container_of(driver, struct host1x_driver, driver); | |
268 | } | |
269 | ||
270 | int host1x_driver_register_full(struct host1x_driver *driver, | |
271 | struct module *owner); | |
272 | void host1x_driver_unregister(struct host1x_driver *driver); | |
273 | ||
274 | #define host1x_driver_register(driver) \ | |
275 | host1x_driver_register_full(driver, THIS_MODULE) | |
276 | ||
277 | struct host1x_device { | |
278 | struct host1x_driver *driver; | |
279 | struct list_head list; | |
280 | struct device dev; | |
281 | ||
282 | struct mutex subdevs_lock; | |
283 | struct list_head subdevs; | |
284 | struct list_head active; | |
285 | ||
286 | struct mutex clients_lock; | |
287 | struct list_head clients; | |
288 | ||
289 | bool registered; | |
290 | }; | |
291 | ||
292 | static inline struct host1x_device *to_host1x_device(struct device *dev) | |
293 | { | |
294 | return container_of(dev, struct host1x_device, dev); | |
295 | } | |
296 | ||
297 | int host1x_device_init(struct host1x_device *device); | |
298 | int host1x_device_exit(struct host1x_device *device); | |
299 | ||
300 | int host1x_client_register(struct host1x_client *client); | |
301 | int host1x_client_unregister(struct host1x_client *client); | |
302 | ||
303 | struct tegra_mipi_device; | |
304 | ||
305 | struct tegra_mipi_device *tegra_mipi_request(struct device *device); | |
306 | void tegra_mipi_free(struct tegra_mipi_device *device); | |
307 | int tegra_mipi_calibrate(struct tegra_mipi_device *device); | |
308 | ||
309 | #endif |