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TOMOYO Linux Cross Reference
Linux/include/linux/host1x.h

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  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*
  3  * Copyright (c) 2009-2013, NVIDIA Corporation. All rights reserved.
  4  */
  5 
  6 #ifndef __LINUX_HOST1X_H
  7 #define __LINUX_HOST1X_H
  8 
  9 #include <linux/device.h>
 10 #include <linux/types.h>
 11 
 12 enum host1x_class {
 13         HOST1X_CLASS_HOST1X = 0x1,
 14         HOST1X_CLASS_GR2D = 0x51,
 15         HOST1X_CLASS_GR2D_SB = 0x52,
 16         HOST1X_CLASS_VIC = 0x5D,
 17         HOST1X_CLASS_GR3D = 0x60,
 18 };
 19 
 20 struct host1x_client;
 21 
 22 /**
 23  * struct host1x_client_ops - host1x client operations
 24  * @init: host1x client initialization code
 25  * @exit: host1x client tear down code
 26  */
 27 struct host1x_client_ops {
 28         int (*init)(struct host1x_client *client);
 29         int (*exit)(struct host1x_client *client);
 30 };
 31 
 32 /**
 33  * struct host1x_client - host1x client structure
 34  * @list: list node for the host1x client
 35  * @parent: pointer to struct device representing the host1x controller
 36  * @dev: pointer to struct device backing this host1x client
 37  * @ops: host1x client operations
 38  * @class: host1x class represented by this client
 39  * @channel: host1x channel associated with this client
 40  * @syncpts: array of syncpoints requested for this client
 41  * @num_syncpts: number of syncpoints requested for this client
 42  */
 43 struct host1x_client {
 44         struct list_head list;
 45         struct device *parent;
 46         struct device *dev;
 47 
 48         const struct host1x_client_ops *ops;
 49 
 50         enum host1x_class class;
 51         struct host1x_channel *channel;
 52 
 53         struct host1x_syncpt **syncpts;
 54         unsigned int num_syncpts;
 55 };
 56 
 57 /*
 58  * host1x buffer objects
 59  */
 60 
 61 struct host1x_bo;
 62 struct sg_table;
 63 
 64 struct host1x_bo_ops {
 65         struct host1x_bo *(*get)(struct host1x_bo *bo);
 66         void (*put)(struct host1x_bo *bo);
 67         dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt);
 68         void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
 69         void *(*mmap)(struct host1x_bo *bo);
 70         void (*munmap)(struct host1x_bo *bo, void *addr);
 71         void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
 72         void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
 73 };
 74 
 75 struct host1x_bo {
 76         const struct host1x_bo_ops *ops;
 77 };
 78 
 79 static inline void host1x_bo_init(struct host1x_bo *bo,
 80                                   const struct host1x_bo_ops *ops)
 81 {
 82         bo->ops = ops;
 83 }
 84 
 85 static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo)
 86 {
 87         return bo->ops->get(bo);
 88 }
 89 
 90 static inline void host1x_bo_put(struct host1x_bo *bo)
 91 {
 92         bo->ops->put(bo);
 93 }
 94 
 95 static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo,
 96                                        struct sg_table **sgt)
 97 {
 98         return bo->ops->pin(bo, sgt);
 99 }
100 
101 static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
102 {
103         bo->ops->unpin(bo, sgt);
104 }
105 
106 static inline void *host1x_bo_mmap(struct host1x_bo *bo)
107 {
108         return bo->ops->mmap(bo);
109 }
110 
111 static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
112 {
113         bo->ops->munmap(bo, addr);
114 }
115 
116 static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
117 {
118         return bo->ops->kmap(bo, pagenum);
119 }
120 
121 static inline void host1x_bo_kunmap(struct host1x_bo *bo,
122                                     unsigned int pagenum, void *addr)
123 {
124         bo->ops->kunmap(bo, pagenum, addr);
125 }
126 
127 /*
128  * host1x syncpoints
129  */
130 
131 #define HOST1X_SYNCPT_CLIENT_MANAGED    (1 << 0)
132 #define HOST1X_SYNCPT_HAS_BASE          (1 << 1)
133 
134 struct host1x_syncpt_base;
135 struct host1x_syncpt;
136 struct host1x;
137 
138 struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id);
139 u32 host1x_syncpt_id(struct host1x_syncpt *sp);
140 u32 host1x_syncpt_read_min(struct host1x_syncpt *sp);
141 u32 host1x_syncpt_read_max(struct host1x_syncpt *sp);
142 u32 host1x_syncpt_read(struct host1x_syncpt *sp);
143 int host1x_syncpt_incr(struct host1x_syncpt *sp);
144 u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs);
145 int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
146                        u32 *value);
147 struct host1x_syncpt *host1x_syncpt_request(struct host1x_client *client,
148                                             unsigned long flags);
149 void host1x_syncpt_free(struct host1x_syncpt *sp);
150 
151 struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp);
152 u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base);
153 
154 /*
155  * host1x channel
156  */
157 
158 struct host1x_channel;
159 struct host1x_job;
160 
161 struct host1x_channel *host1x_channel_request(struct device *dev);
162 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel);
163 void host1x_channel_put(struct host1x_channel *channel);
164 int host1x_job_submit(struct host1x_job *job);
165 
166 /*
167  * host1x job
168  */
169 
170 struct host1x_reloc {
171         struct {
172                 struct host1x_bo *bo;
173                 unsigned long offset;
174         } cmdbuf;
175         struct {
176                 struct host1x_bo *bo;
177                 unsigned long offset;
178         } target;
179         unsigned long shift;
180 };
181 
182 struct host1x_job {
183         /* When refcount goes to zero, job can be freed */
184         struct kref ref;
185 
186         /* List entry */
187         struct list_head list;
188 
189         /* Channel where job is submitted to */
190         struct host1x_channel *channel;
191 
192         /* client where the job originated */
193         struct host1x_client *client;
194 
195         /* Gathers and their memory */
196         struct host1x_job_gather *gathers;
197         unsigned int num_gathers;
198 
199         /* Array of handles to be pinned & unpinned */
200         struct host1x_reloc *relocs;
201         unsigned int num_relocs;
202         struct host1x_job_unpin_data *unpins;
203         unsigned int num_unpins;
204 
205         dma_addr_t *addr_phys;
206         dma_addr_t *gather_addr_phys;
207         dma_addr_t *reloc_addr_phys;
208 
209         /* Sync point id, number of increments and end related to the submit */
210         u32 syncpt_id;
211         u32 syncpt_incrs;
212         u32 syncpt_end;
213 
214         /* Maximum time to wait for this job */
215         unsigned int timeout;
216 
217         /* Index and number of slots used in the push buffer */
218         unsigned int first_get;
219         unsigned int num_slots;
220 
221         /* Copy of gathers */
222         size_t gather_copy_size;
223         dma_addr_t gather_copy;
224         u8 *gather_copy_mapped;
225 
226         /* Check if register is marked as an address reg */
227         int (*is_addr_reg)(struct device *dev, u32 class, u32 reg);
228 
229         /* Check if class belongs to the unit */
230         int (*is_valid_class)(u32 class);
231 
232         /* Request a SETCLASS to this class */
233         u32 class;
234 
235         /* Add a channel wait for previous ops to complete */
236         bool serialize;
237 };
238 
239 struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
240                                     u32 num_cmdbufs, u32 num_relocs);
241 void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *bo,
242                            unsigned int words, unsigned int offset);
243 struct host1x_job *host1x_job_get(struct host1x_job *job);
244 void host1x_job_put(struct host1x_job *job);
245 int host1x_job_pin(struct host1x_job *job, struct device *dev);
246 void host1x_job_unpin(struct host1x_job *job);
247 
248 /*
249  * subdevice probe infrastructure
250  */
251 
252 struct host1x_device;
253 
254 /**
255  * struct host1x_driver - host1x logical device driver
256  * @driver: core driver
257  * @subdevs: table of OF device IDs matching subdevices for this driver
258  * @list: list node for the driver
259  * @probe: called when the host1x logical device is probed
260  * @remove: called when the host1x logical device is removed
261  * @shutdown: called when the host1x logical device is shut down
262  */
263 struct host1x_driver {
264         struct device_driver driver;
265 
266         const struct of_device_id *subdevs;
267         struct list_head list;
268 
269         int (*probe)(struct host1x_device *device);
270         int (*remove)(struct host1x_device *device);
271         void (*shutdown)(struct host1x_device *device);
272 };
273 
274 static inline struct host1x_driver *
275 to_host1x_driver(struct device_driver *driver)
276 {
277         return container_of(driver, struct host1x_driver, driver);
278 }
279 
280 int host1x_driver_register_full(struct host1x_driver *driver,
281                                 struct module *owner);
282 void host1x_driver_unregister(struct host1x_driver *driver);
283 
284 #define host1x_driver_register(driver) \
285         host1x_driver_register_full(driver, THIS_MODULE)
286 
287 struct host1x_device {
288         struct host1x_driver *driver;
289         struct list_head list;
290         struct device dev;
291 
292         struct mutex subdevs_lock;
293         struct list_head subdevs;
294         struct list_head active;
295 
296         struct mutex clients_lock;
297         struct list_head clients;
298 
299         bool registered;
300 
301         struct device_dma_parameters dma_parms;
302 };
303 
304 static inline struct host1x_device *to_host1x_device(struct device *dev)
305 {
306         return container_of(dev, struct host1x_device, dev);
307 }
308 
309 int host1x_device_init(struct host1x_device *device);
310 int host1x_device_exit(struct host1x_device *device);
311 
312 int host1x_client_register(struct host1x_client *client);
313 int host1x_client_unregister(struct host1x_client *client);
314 
315 struct tegra_mipi_device;
316 
317 struct tegra_mipi_device *tegra_mipi_request(struct device *device);
318 void tegra_mipi_free(struct tegra_mipi_device *device);
319 int tegra_mipi_enable(struct tegra_mipi_device *device);
320 int tegra_mipi_disable(struct tegra_mipi_device *device);
321 int tegra_mipi_calibrate(struct tegra_mipi_device *device);
322 
323 #endif
324 

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