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 int host1x_syncpt_incr(struct host1x_syncpt *sp); 139 u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs); 140 int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout, 141 u32 *value); 142 struct host1x_syncpt *host1x_syncpt_request(struct device *dev, 143 unsigned long flags); 144 void host1x_syncpt_free(struct host1x_syncpt *sp); 145 146 struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp); 147 u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base); 148 149 /* 150 * host1x channel 151 */ 152 153 struct host1x_channel; 154 struct host1x_job; 155 156 struct host1x_channel *host1x_channel_request(struct device *dev); 157 void host1x_channel_free(struct host1x_channel *channel); 158 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel); 159 void host1x_channel_put(struct host1x_channel *channel); 160 int host1x_job_submit(struct host1x_job *job); 161 162 /* 163 * host1x job 164 */ 165 166 struct host1x_reloc { 167 struct { 168 struct host1x_bo *bo; 169 unsigned long offset; 170 } cmdbuf; 171 struct { 172 struct host1x_bo *bo; 173 unsigned long offset; 174 } target; 175 unsigned long shift; 176 }; 177 178 struct host1x_job { 179 /* When refcount goes to zero, job can be freed */ 180 struct kref ref; 181 182 /* List entry */ 183 struct list_head list; 184 185 /* Channel where job is submitted to */ 186 struct host1x_channel *channel; 187 188 u32 client; 189 190 /* Gathers and their memory */ 191 struct host1x_job_gather *gathers; 192 unsigned int num_gathers; 193 194 /* Wait checks to be processed at submit time */ 195 struct host1x_waitchk *waitchk; 196 unsigned int num_waitchk; 197 u32 waitchk_mask; 198 199 /* Array of handles to be pinned & unpinned */ 200 struct host1x_reloc *relocarray; 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 reg, u32 class); 228 229 /* Request a SETCLASS to this class */ 230 u32 class; 231 232 /* Add a channel wait for previous ops to complete */ 233 bool serialize; 234 }; 235 236 struct host1x_job *host1x_job_alloc(struct host1x_channel *ch, 237 u32 num_cmdbufs, u32 num_relocs, 238 u32 num_waitchks); 239 void host1x_job_add_gather(struct host1x_job *job, struct host1x_bo *mem_id, 240 u32 words, u32 offset); 241 struct host1x_job *host1x_job_get(struct host1x_job *job); 242 void host1x_job_put(struct host1x_job *job); 243 int host1x_job_pin(struct host1x_job *job, struct device *dev); 244 void host1x_job_unpin(struct host1x_job *job); 245 246 /* 247 * subdevice probe infrastructure 248 */ 249 250 struct host1x_device; 251 252 struct host1x_driver { 253 struct device_driver driver; 254 255 const struct of_device_id *subdevs; 256 struct list_head list; 257 258 int (*probe)(struct host1x_device *device); 259 int (*remove)(struct host1x_device *device); 260 void (*shutdown)(struct host1x_device *device); 261 }; 262 263 static inline struct host1x_driver * 264 to_host1x_driver(struct device_driver *driver) 265 { 266 return container_of(driver, struct host1x_driver, driver); 267 } 268 269 int host1x_driver_register_full(struct host1x_driver *driver, 270 struct module *owner); 271 void host1x_driver_unregister(struct host1x_driver *driver); 272 273 #define host1x_driver_register(driver) \ 274 host1x_driver_register_full(driver, THIS_MODULE) 275 276 struct host1x_device { 277 struct host1x_driver *driver; 278 struct list_head list; 279 struct device dev; 280 281 struct mutex subdevs_lock; 282 struct list_head subdevs; 283 struct list_head active; 284 285 struct mutex clients_lock; 286 struct list_head clients; 287 288 bool registered; 289 }; 290 291 static inline struct host1x_device *to_host1x_device(struct device *dev) 292 { 293 return container_of(dev, struct host1x_device, dev); 294 } 295 296 int host1x_device_init(struct host1x_device *device); 297 int host1x_device_exit(struct host1x_device *device); 298 299 int host1x_client_register(struct host1x_client *client); 300 int host1x_client_unregister(struct host1x_client *client); 301 302 struct tegra_mipi_device; 303 304 struct tegra_mipi_device *tegra_mipi_request(struct device *device); 305 void tegra_mipi_free(struct tegra_mipi_device *device); 306 int tegra_mipi_calibrate(struct tegra_mipi_device *device); 307 308 #endif 309