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_VIC = 0x5D, 30 HOST1X_CLASS_GR3D = 0x60, 31 }; 32 33 struct host1x_client; 34 35 struct host1x_client_ops { 36 int (*init)(struct host1x_client *client); 37 int (*exit)(struct host1x_client *client); 38 }; 39 40 struct host1x_client { 41 struct list_head list; 42 struct device *parent; 43 struct device *dev; 44 45 const struct host1x_client_ops *ops; 46 47 enum host1x_class class; 48 struct host1x_channel *channel; 49 50 struct host1x_syncpt **syncpts; 51 unsigned int num_syncpts; 52 }; 53 54 /* 55 * host1x buffer objects 56 */ 57 58 struct host1x_bo; 59 struct sg_table; 60 61 struct host1x_bo_ops { 62 struct host1x_bo *(*get)(struct host1x_bo *bo); 63 void (*put)(struct host1x_bo *bo); 64 dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt); 65 void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt); 66 void *(*mmap)(struct host1x_bo *bo); 67 void (*munmap)(struct host1x_bo *bo, void *addr); 68 void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum); 69 void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr); 70 }; 71 72 struct host1x_bo { 73 const struct host1x_bo_ops *ops; 74 }; 75 76 static inline void host1x_bo_init(struct host1x_bo *bo, 77 const struct host1x_bo_ops *ops) 78 { 79 bo->ops = ops; 80 } 81 82 static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo) 83 { 84 return bo->ops->get(bo); 85 } 86 87 static inline void host1x_bo_put(struct host1x_bo *bo) 88 { 89 bo->ops->put(bo); 90 } 91 92 static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo, 93 struct sg_table **sgt) 94 { 95 return bo->ops->pin(bo, sgt); 96 } 97 98 static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt) 99 { 100 bo->ops->unpin(bo, sgt); 101 } 102 103 static inline void *host1x_bo_mmap(struct host1x_bo *bo) 104 { 105 return bo->ops->mmap(bo); 106 } 107 108 static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr) 109 { 110 bo->ops->munmap(bo, addr); 111 } 112 113 static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum) 114 { 115 return bo->ops->kmap(bo, pagenum); 116 } 117 118 static inline void host1x_bo_kunmap(struct host1x_bo *bo, 119 unsigned int pagenum, void *addr) 120 { 121 bo->ops->kunmap(bo, pagenum, addr); 122 } 123 124 /* 125 * host1x syncpoints 126 */ 127 128 #define HOST1X_SYNCPT_CLIENT_MANAGED (1 << 0) 129 #define HOST1X_SYNCPT_HAS_BASE (1 << 1) 130 131 struct host1x_syncpt_base; 132 struct host1x_syncpt; 133 struct host1x; 134 135 struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id); 136 u32 host1x_syncpt_id(struct host1x_syncpt *sp); 137 u32 host1x_syncpt_read_min(struct host1x_syncpt *sp); 138 u32 host1x_syncpt_read_max(struct host1x_syncpt *sp); 139 u32 host1x_syncpt_read(struct host1x_syncpt *sp); 140 int host1x_syncpt_incr(struct host1x_syncpt *sp); 141 u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs); 142 int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, 143 u32 *value); 144 struct host1x_syncpt *host1x_syncpt_request(struct device *dev, 145 unsigned long flags); 146 void host1x_syncpt_free(struct host1x_syncpt *sp); 147 148 struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp); 149 u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base); 150 151 /* 152 * host1x channel 153 */ 154 155 struct host1x_channel; 156 struct host1x_job; 157 158 struct host1x_channel *host1x_channel_request(struct device *dev); 159 void host1x_channel_free(struct host1x_channel *channel); 160 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); 161 void host1x_channel_put(struct host1x_channel *channel); 162 int host1x_job_submit(struct host1x_job *job); 163 164 /* 165 * host1x job 166 */ 167 168 struct host1x_reloc { 169 struct { 170 struct host1x_bo *bo; 171 unsigned long offset; 172 } cmdbuf; 173 struct { 174 struct host1x_bo *bo; 175 unsigned long offset; 176 } target; 177 unsigned long shift; 178 }; 179 180 struct host1x_job { 181 /* When refcount goes to zero, job can be freed */ 182 struct kref ref; 183 184 /* List entry */ 185 struct list_head list; 186 187 /* Channel where job is submitted to */ 188 struct host1x_channel *channel; 189 190 u32 client; 191 192 /* Gathers and their memory */ 193 struct host1x_job_gather *gathers; 194 unsigned int num_gathers; 195 196 /* Wait checks to be processed at submit time */ 197 struct host1x_waitchk *waitchk; 198 unsigned int num_waitchk; 199 u32 waitchk_mask; 200 201 /* Array of handles to be pinned & unpinned */ 202 struct host1x_reloc *relocarray; 203 unsigned int num_relocs; 204 struct host1x_job_unpin_data *unpins; 205 unsigned int num_unpins; 206 207 dma_addr_t *addr_phys; 208 dma_addr_t *gather_addr_phys; 209 dma_addr_t *reloc_addr_phys; 210 211 /* Sync point id, number of increments and end related to the submit */ 212 u32 syncpt_id; 213 u32 syncpt_incrs; 214 u32 syncpt_end; 215 216 /* Maximum time to wait for this job */ 217 unsigned int timeout; 218 219 /* Index and number of slots used in the push buffer */ 220 unsigned int first_get; 221 unsigned int num_slots; 222 223 /* Copy of gathers */ 224 size_t gather_copy_size; 225 dma_addr_t gather_copy; 226 u8 *gather_copy_mapped; 227 228 /* Check if register is marked as an address reg */ 229 int (*is_addr_reg)(struct device *dev, u32 reg, u32 class); 230 231 /* Request a SETCLASS to this class */ 232 u32 class; 233 234 /* Add a channel wait for previous ops to complete */ 235 bool serialize; 236 }; 237 238 struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, 239 u32 num_cmdbufs, u32 num_relocs, 240 u32 num_waitchks); 241 void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id, 242 u32 words, u32 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 struct host1x_driver { 255 struct device_driver driver; 256 257 const struct of_device_id *subdevs; 258 struct list_head list; 259 260 int (*probe)(struct host1x_device *device); 261 int (*remove)(struct host1x_device *device); 262 void (*shutdown)(struct host1x_device *device); 263 }; 264 265 static inline struct host1x_driver * 266 to_host1x_driver(struct device_driver *driver) 267 { 268 return container_of(driver, struct host1x_driver, driver); 269 } 270 271 int host1x_driver_register_full(struct host1x_driver *driver, 272 struct module *owner); 273 void host1x_driver_unregister(struct host1x_driver *driver); 274 275 #define host1x_driver_register(driver) \ 276 host1x_driver_register_full(driver, THIS_MODULE) 277 278 struct host1x_device { 279 struct host1x_driver *driver; 280 struct list_head list; 281 struct device dev; 282 283 struct mutex subdevs_lock; 284 struct list_head subdevs; 285 struct list_head active; 286 287 struct mutex clients_lock; 288 struct list_head clients; 289 290 bool registered; 291 }; 292 293 static inline struct host1x_device *to_host1x_device(struct device *dev) 294 { 295 return container_of(dev, struct host1x_device, dev); 296 } 297 298 int host1x_device_init(struct host1x_device *device); 299 int host1x_device_exit(struct host1x_device *device); 300 301 int host1x_client_register(struct host1x_client *client); 302 int host1x_client_unregister(struct host1x_client *client); 303 304 struct tegra_mipi_device; 305 306 struct tegra_mipi_device *tegra_mipi_request(struct device *device); 307 void tegra_mipi_free(struct tegra_mipi_device *device); 308 int tegra_mipi_enable(struct tegra_mipi_device *device); 309 int tegra_mipi_disable(struct tegra_mipi_device *device); 310 int tegra_mipi_calibrate(struct tegra_mipi_device *device); 311 312 #endif 313