root/include/linux/host1x.h

INCLUDED FROM

DEFINITIONS

1. host1x_bo_init
2. host1x_bo_get
3. host1x_bo_put
4. host1x_bo_pin
5. host1x_bo_unpin
6. host1x_bo_mmap
7. host1x_bo_munmap
8. host1x_bo_kmap
9. host1x_bo_kunmap
10. to_host1x_driver
11. to_host1x_device

   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