Christopher Ferris | ccfaccd | 2016-08-24 12:11:31 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2014-2015 Broadcom |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #ifndef _UAPI_VC4_DRM_H_ |
| 25 | #define _UAPI_VC4_DRM_H_ |
| 26 | |
| 27 | #include "drm.h" |
| 28 | |
| 29 | #if defined(__cplusplus) |
| 30 | extern "C" { |
| 31 | #endif |
| 32 | |
| 33 | #define DRM_VC4_SUBMIT_CL 0x00 |
| 34 | #define DRM_VC4_WAIT_SEQNO 0x01 |
| 35 | #define DRM_VC4_WAIT_BO 0x02 |
| 36 | #define DRM_VC4_CREATE_BO 0x03 |
| 37 | #define DRM_VC4_MMAP_BO 0x04 |
| 38 | #define DRM_VC4_CREATE_SHADER_BO 0x05 |
| 39 | #define DRM_VC4_GET_HANG_STATE 0x06 |
Christopher Ferris | 6e3550f | 2016-12-12 14:51:18 -0800 | [diff] [blame] | 40 | #define DRM_VC4_GET_PARAM 0x07 |
Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 41 | #define DRM_VC4_SET_TILING 0x08 |
| 42 | #define DRM_VC4_GET_TILING 0x09 |
| 43 | #define DRM_VC4_LABEL_BO 0x0a |
Christopher Ferris | ccfaccd | 2016-08-24 12:11:31 -0700 | [diff] [blame] | 44 | |
| 45 | #define DRM_IOCTL_VC4_SUBMIT_CL DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_SUBMIT_CL, struct drm_vc4_submit_cl) |
| 46 | #define DRM_IOCTL_VC4_WAIT_SEQNO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_WAIT_SEQNO, struct drm_vc4_wait_seqno) |
| 47 | #define DRM_IOCTL_VC4_WAIT_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_WAIT_BO, struct drm_vc4_wait_bo) |
| 48 | #define DRM_IOCTL_VC4_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_CREATE_BO, struct drm_vc4_create_bo) |
| 49 | #define DRM_IOCTL_VC4_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_MMAP_BO, struct drm_vc4_mmap_bo) |
| 50 | #define DRM_IOCTL_VC4_CREATE_SHADER_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_CREATE_SHADER_BO, struct drm_vc4_create_shader_bo) |
| 51 | #define DRM_IOCTL_VC4_GET_HANG_STATE DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_HANG_STATE, struct drm_vc4_get_hang_state) |
Christopher Ferris | 6e3550f | 2016-12-12 14:51:18 -0800 | [diff] [blame] | 52 | #define DRM_IOCTL_VC4_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_PARAM, struct drm_vc4_get_param) |
Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 53 | #define DRM_IOCTL_VC4_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_SET_TILING, struct drm_vc4_set_tiling) |
| 54 | #define DRM_IOCTL_VC4_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_GET_TILING, struct drm_vc4_get_tiling) |
| 55 | #define DRM_IOCTL_VC4_LABEL_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_VC4_LABEL_BO, struct drm_vc4_label_bo) |
Christopher Ferris | ccfaccd | 2016-08-24 12:11:31 -0700 | [diff] [blame] | 56 | |
| 57 | struct drm_vc4_submit_rcl_surface { |
| 58 | __u32 hindex; /* Handle index, or ~0 if not present. */ |
| 59 | __u32 offset; /* Offset to start of buffer. */ |
| 60 | /* |
| 61 | * Bits for either render config (color_write) or load/store packet. |
| 62 | * Bits should all be 0 for MSAA load/stores. |
| 63 | */ |
| 64 | __u16 bits; |
| 65 | |
| 66 | #define VC4_SUBMIT_RCL_SURFACE_READ_IS_FULL_RES (1 << 0) |
| 67 | __u16 flags; |
| 68 | }; |
| 69 | |
| 70 | /** |
| 71 | * struct drm_vc4_submit_cl - ioctl argument for submitting commands to the 3D |
| 72 | * engine. |
| 73 | * |
| 74 | * Drivers typically use GPU BOs to store batchbuffers / command lists and |
| 75 | * their associated state. However, because the VC4 lacks an MMU, we have to |
| 76 | * do validation of memory accesses by the GPU commands. If we were to store |
| 77 | * our commands in BOs, we'd need to do uncached readback from them to do the |
| 78 | * validation process, which is too expensive. Instead, userspace accumulates |
| 79 | * commands and associated state in plain memory, then the kernel copies the |
| 80 | * data to its own address space, and then validates and stores it in a GPU |
| 81 | * BO. |
| 82 | */ |
| 83 | struct drm_vc4_submit_cl { |
| 84 | /* Pointer to the binner command list. |
| 85 | * |
| 86 | * This is the first set of commands executed, which runs the |
| 87 | * coordinate shader to determine where primitives land on the screen, |
| 88 | * then writes out the state updates and draw calls necessary per tile |
| 89 | * to the tile allocation BO. |
| 90 | */ |
| 91 | __u64 bin_cl; |
| 92 | |
| 93 | /* Pointer to the shader records. |
| 94 | * |
| 95 | * Shader records are the structures read by the hardware that contain |
| 96 | * pointers to uniforms, shaders, and vertex attributes. The |
| 97 | * reference to the shader record has enough information to determine |
| 98 | * how many pointers are necessary (fixed number for shaders/uniforms, |
| 99 | * and an attribute count), so those BO indices into bo_handles are |
| 100 | * just stored as __u32s before each shader record passed in. |
| 101 | */ |
| 102 | __u64 shader_rec; |
| 103 | |
| 104 | /* Pointer to uniform data and texture handles for the textures |
| 105 | * referenced by the shader. |
| 106 | * |
| 107 | * For each shader state record, there is a set of uniform data in the |
| 108 | * order referenced by the record (FS, VS, then CS). Each set of |
| 109 | * uniform data has a __u32 index into bo_handles per texture |
| 110 | * sample operation, in the order the QPU_W_TMUn_S writes appear in |
| 111 | * the program. Following the texture BO handle indices is the actual |
| 112 | * uniform data. |
| 113 | * |
| 114 | * The individual uniform state blocks don't have sizes passed in, |
| 115 | * because the kernel has to determine the sizes anyway during shader |
| 116 | * code validation. |
| 117 | */ |
| 118 | __u64 uniforms; |
| 119 | __u64 bo_handles; |
| 120 | |
| 121 | /* Size in bytes of the binner command list. */ |
| 122 | __u32 bin_cl_size; |
| 123 | /* Size in bytes of the set of shader records. */ |
| 124 | __u32 shader_rec_size; |
| 125 | /* Number of shader records. |
| 126 | * |
| 127 | * This could just be computed from the contents of shader_records and |
| 128 | * the address bits of references to them from the bin CL, but it |
| 129 | * keeps the kernel from having to resize some allocations it makes. |
| 130 | */ |
| 131 | __u32 shader_rec_count; |
| 132 | /* Size in bytes of the uniform state. */ |
| 133 | __u32 uniforms_size; |
| 134 | |
| 135 | /* Number of BO handles passed in (size is that times 4). */ |
| 136 | __u32 bo_handle_count; |
| 137 | |
| 138 | /* RCL setup: */ |
| 139 | __u16 width; |
| 140 | __u16 height; |
| 141 | __u8 min_x_tile; |
| 142 | __u8 min_y_tile; |
| 143 | __u8 max_x_tile; |
| 144 | __u8 max_y_tile; |
| 145 | struct drm_vc4_submit_rcl_surface color_read; |
| 146 | struct drm_vc4_submit_rcl_surface color_write; |
| 147 | struct drm_vc4_submit_rcl_surface zs_read; |
| 148 | struct drm_vc4_submit_rcl_surface zs_write; |
| 149 | struct drm_vc4_submit_rcl_surface msaa_color_write; |
| 150 | struct drm_vc4_submit_rcl_surface msaa_zs_write; |
| 151 | __u32 clear_color[2]; |
| 152 | __u32 clear_z; |
| 153 | __u8 clear_s; |
| 154 | |
| 155 | __u32 pad:24; |
| 156 | |
| 157 | #define VC4_SUBMIT_CL_USE_CLEAR_COLOR (1 << 0) |
Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 158 | /* By default, the kernel gets to choose the order that the tiles are |
| 159 | * rendered in. If this is set, then the tiles will be rendered in a |
| 160 | * raster order, with the right-to-left vs left-to-right and |
| 161 | * top-to-bottom vs bottom-to-top dictated by |
| 162 | * VC4_SUBMIT_CL_RCL_ORDER_INCREASING_*. This allows overlapping |
| 163 | * blits to be implemented using the 3D engine. |
| 164 | */ |
| 165 | #define VC4_SUBMIT_CL_FIXED_RCL_ORDER (1 << 1) |
| 166 | #define VC4_SUBMIT_CL_RCL_ORDER_INCREASING_X (1 << 2) |
| 167 | #define VC4_SUBMIT_CL_RCL_ORDER_INCREASING_Y (1 << 3) |
Christopher Ferris | ccfaccd | 2016-08-24 12:11:31 -0700 | [diff] [blame] | 168 | __u32 flags; |
| 169 | |
| 170 | /* Returned value of the seqno of this render job (for the |
| 171 | * wait ioctl). |
| 172 | */ |
| 173 | __u64 seqno; |
| 174 | }; |
| 175 | |
| 176 | /** |
| 177 | * struct drm_vc4_wait_seqno - ioctl argument for waiting for |
| 178 | * DRM_VC4_SUBMIT_CL completion using its returned seqno. |
| 179 | * |
| 180 | * timeout_ns is the timeout in nanoseconds, where "0" means "don't |
| 181 | * block, just return the status." |
| 182 | */ |
| 183 | struct drm_vc4_wait_seqno { |
| 184 | __u64 seqno; |
| 185 | __u64 timeout_ns; |
| 186 | }; |
| 187 | |
| 188 | /** |
| 189 | * struct drm_vc4_wait_bo - ioctl argument for waiting for |
| 190 | * completion of the last DRM_VC4_SUBMIT_CL on a BO. |
| 191 | * |
| 192 | * This is useful for cases where multiple processes might be |
| 193 | * rendering to a BO and you want to wait for all rendering to be |
| 194 | * completed. |
| 195 | */ |
| 196 | struct drm_vc4_wait_bo { |
| 197 | __u32 handle; |
| 198 | __u32 pad; |
| 199 | __u64 timeout_ns; |
| 200 | }; |
| 201 | |
| 202 | /** |
| 203 | * struct drm_vc4_create_bo - ioctl argument for creating VC4 BOs. |
| 204 | * |
| 205 | * There are currently no values for the flags argument, but it may be |
| 206 | * used in a future extension. |
| 207 | */ |
| 208 | struct drm_vc4_create_bo { |
| 209 | __u32 size; |
| 210 | __u32 flags; |
| 211 | /** Returned GEM handle for the BO. */ |
| 212 | __u32 handle; |
| 213 | __u32 pad; |
| 214 | }; |
| 215 | |
| 216 | /** |
| 217 | * struct drm_vc4_mmap_bo - ioctl argument for mapping VC4 BOs. |
| 218 | * |
| 219 | * This doesn't actually perform an mmap. Instead, it returns the |
| 220 | * offset you need to use in an mmap on the DRM device node. This |
| 221 | * means that tools like valgrind end up knowing about the mapped |
| 222 | * memory. |
| 223 | * |
| 224 | * There are currently no values for the flags argument, but it may be |
| 225 | * used in a future extension. |
| 226 | */ |
| 227 | struct drm_vc4_mmap_bo { |
| 228 | /** Handle for the object being mapped. */ |
| 229 | __u32 handle; |
| 230 | __u32 flags; |
| 231 | /** offset into the drm node to use for subsequent mmap call. */ |
| 232 | __u64 offset; |
| 233 | }; |
| 234 | |
| 235 | /** |
| 236 | * struct drm_vc4_create_shader_bo - ioctl argument for creating VC4 |
| 237 | * shader BOs. |
| 238 | * |
| 239 | * Since allowing a shader to be overwritten while it's also being |
| 240 | * executed from would allow privlege escalation, shaders must be |
| 241 | * created using this ioctl, and they can't be mmapped later. |
| 242 | */ |
| 243 | struct drm_vc4_create_shader_bo { |
| 244 | /* Size of the data argument. */ |
| 245 | __u32 size; |
| 246 | /* Flags, currently must be 0. */ |
| 247 | __u32 flags; |
| 248 | |
| 249 | /* Pointer to the data. */ |
| 250 | __u64 data; |
| 251 | |
| 252 | /** Returned GEM handle for the BO. */ |
| 253 | __u32 handle; |
| 254 | /* Pad, must be 0. */ |
| 255 | __u32 pad; |
| 256 | }; |
| 257 | |
| 258 | struct drm_vc4_get_hang_state_bo { |
| 259 | __u32 handle; |
| 260 | __u32 paddr; |
| 261 | __u32 size; |
| 262 | __u32 pad; |
| 263 | }; |
| 264 | |
| 265 | /** |
| 266 | * struct drm_vc4_hang_state - ioctl argument for collecting state |
| 267 | * from a GPU hang for analysis. |
| 268 | */ |
| 269 | struct drm_vc4_get_hang_state { |
| 270 | /** Pointer to array of struct drm_vc4_get_hang_state_bo. */ |
| 271 | __u64 bo; |
| 272 | /** |
| 273 | * On input, the size of the bo array. Output is the number |
| 274 | * of bos to be returned. |
| 275 | */ |
| 276 | __u32 bo_count; |
| 277 | |
| 278 | __u32 start_bin, start_render; |
| 279 | |
| 280 | __u32 ct0ca, ct0ea; |
| 281 | __u32 ct1ca, ct1ea; |
| 282 | __u32 ct0cs, ct1cs; |
| 283 | __u32 ct0ra0, ct1ra0; |
| 284 | |
| 285 | __u32 bpca, bpcs; |
| 286 | __u32 bpoa, bpos; |
| 287 | |
| 288 | __u32 vpmbase; |
| 289 | |
| 290 | __u32 dbge; |
| 291 | __u32 fdbgo; |
| 292 | __u32 fdbgb; |
| 293 | __u32 fdbgr; |
| 294 | __u32 fdbgs; |
| 295 | __u32 errstat; |
| 296 | |
| 297 | /* Pad that we may save more registers into in the future. */ |
| 298 | __u32 pad[16]; |
| 299 | }; |
| 300 | |
Christopher Ferris | 6e3550f | 2016-12-12 14:51:18 -0800 | [diff] [blame] | 301 | #define DRM_VC4_PARAM_V3D_IDENT0 0 |
| 302 | #define DRM_VC4_PARAM_V3D_IDENT1 1 |
| 303 | #define DRM_VC4_PARAM_V3D_IDENT2 2 |
| 304 | #define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3 |
Christopher Ferris | 2fd4b3c | 2017-02-21 12:32:08 -0800 | [diff] [blame] | 305 | #define DRM_VC4_PARAM_SUPPORTS_ETC1 4 |
| 306 | #define DRM_VC4_PARAM_SUPPORTS_THREADED_FS 5 |
Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 307 | #define DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER 6 |
Christopher Ferris | 6e3550f | 2016-12-12 14:51:18 -0800 | [diff] [blame] | 308 | |
| 309 | struct drm_vc4_get_param { |
| 310 | __u32 param; |
| 311 | __u32 pad; |
| 312 | __u64 value; |
| 313 | }; |
| 314 | |
Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame] | 315 | struct drm_vc4_get_tiling { |
| 316 | __u32 handle; |
| 317 | __u32 flags; |
| 318 | __u64 modifier; |
| 319 | }; |
| 320 | |
| 321 | struct drm_vc4_set_tiling { |
| 322 | __u32 handle; |
| 323 | __u32 flags; |
| 324 | __u64 modifier; |
| 325 | }; |
| 326 | |
| 327 | /** |
| 328 | * struct drm_vc4_label_bo - Attach a name to a BO for debug purposes. |
| 329 | */ |
| 330 | struct drm_vc4_label_bo { |
| 331 | __u32 handle; |
| 332 | __u32 len; |
| 333 | __u64 name; |
| 334 | }; |
| 335 | |
Christopher Ferris | ccfaccd | 2016-08-24 12:11:31 -0700 | [diff] [blame] | 336 | #if defined(__cplusplus) |
| 337 | } |
| 338 | #endif |
| 339 | |
| 340 | #endif /* _UAPI_VC4_DRM_H_ */ |