1 /* 2 * Copyright (C) 2013 Red Hat 3 * Author: Rob Clark <robdclark@gmail.com> 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining a 6 * copy of this software and associated documentation files (the "Software"), 7 * to deal in the Software without restriction, including without limitation 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 9 * and/or sell copies of the Software, and to permit persons to whom the 10 * Software is furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the next 13 * paragraph) shall be included in all copies or substantial portions of the 14 * Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #ifndef __MSM_DRM_H__ 26 #define __MSM_DRM_H__ 27 28 #include "drm.h" 29 30 #if defined(__cplusplus) 31 extern "C" { 32 #endif 33 34 /* Please note that modifications to all structs defined here are 35 * subject to backwards-compatibility constraints: 36 * 1) Do not use pointers, use __u64 instead for 32 bit / 64 bit 37 * user/kernel compatibility 38 * 2) Keep fields aligned to their size 39 * 3) Because of how drm_ioctl() works, we can add new fields at 40 * the end of an ioctl if some care is taken: drm_ioctl() will 41 * zero out the new fields at the tail of the ioctl, so a zero 42 * value should have a backwards compatible meaning. And for 43 * output params, userspace won't see the newly added output 44 * fields.. so that has to be somehow ok. 45 */ 46 47 #define MSM_PIPE_NONE 0x00 48 #define MSM_PIPE_2D0 0x01 49 #define MSM_PIPE_2D1 0x02 50 #define MSM_PIPE_3D0 0x10 51 52 /* The pipe-id just uses the lower bits, so can be OR'd with flags in 53 * the upper 16 bits (which could be extended further, if needed, maybe 54 * we extend/overload the pipe-id some day to deal with multiple rings, 55 * but even then I don't think we need the full lower 16 bits). 56 */ 57 #define MSM_PIPE_ID_MASK 0xffff 58 #define MSM_PIPE_ID(x) ((x) & MSM_PIPE_ID_MASK) 59 #define MSM_PIPE_FLAGS(x) ((x) & ~MSM_PIPE_ID_MASK) 60 61 /* timeouts are specified in clock-monotonic absolute times (to simplify 62 * restarting interrupted ioctls). The following struct is logically the 63 * same as 'struct timespec' but 32/64b ABI safe. 64 */ 65 struct drm_msm_timespec { 66 __s64 tv_sec; /* seconds */ 67 __s64 tv_nsec; /* nanoseconds */ 68 }; 69 70 /* Below "RO" indicates a read-only param, "WO" indicates write-only, and 71 * "RW" indicates a param that can be both read (GET_PARAM) and written 72 * (SET_PARAM) 73 */ 74 #define MSM_PARAM_GPU_ID 0x01 /* RO */ 75 #define MSM_PARAM_GMEM_SIZE 0x02 /* RO */ 76 #define MSM_PARAM_CHIP_ID 0x03 /* RO */ 77 #define MSM_PARAM_MAX_FREQ 0x04 /* RO */ 78 #define MSM_PARAM_TIMESTAMP 0x05 /* RO */ 79 #define MSM_PARAM_GMEM_BASE 0x06 /* RO */ 80 #define MSM_PARAM_PRIORITIES 0x07 /* RO: The # of priority levels */ 81 #define MSM_PARAM_PP_PGTABLE 0x08 /* RO: Deprecated, always returns zero */ 82 #define MSM_PARAM_FAULTS 0x09 /* RO */ 83 #define MSM_PARAM_SUSPENDS 0x0a /* RO */ 84 #define MSM_PARAM_SYSPROF 0x0b /* WO: 1 preserves perfcntrs, 2 also disables suspend */ 85 #define MSM_PARAM_COMM 0x0c /* WO: override for task->comm */ 86 #define MSM_PARAM_CMDLINE 0x0d /* WO: override for task cmdline */ 87 #define MSM_PARAM_VA_START 0x0e /* RO: start of valid GPU iova range */ 88 #define MSM_PARAM_VA_SIZE 0x0f /* RO: size of valid GPU iova range (bytes) */ 89 #define MSM_PARAM_HIGHEST_BANK_BIT 0x10 /* RO */ 90 91 /* For backwards compat. The original support for preemption was based on 92 * a single ring per priority level so # of priority levels equals the # 93 * of rings. With drm/scheduler providing additional levels of priority, 94 * the number of priorities is greater than the # of rings. The param is 95 * renamed to better reflect this. 96 */ 97 #define MSM_PARAM_NR_RINGS MSM_PARAM_PRIORITIES 98 99 struct drm_msm_param { 100 __u32 pipe; /* in, MSM_PIPE_x */ 101 __u32 param; /* in, MSM_PARAM_x */ 102 __u64 value; /* out (get_param) or in (set_param) */ 103 __u32 len; /* zero for non-pointer params */ 104 __u32 pad; /* must be zero */ 105 }; 106 107 /* 108 * GEM buffers: 109 */ 110 111 #define MSM_BO_SCANOUT 0x00000001 /* scanout capable */ 112 #define MSM_BO_GPU_READONLY 0x00000002 113 #define MSM_BO_CACHE_MASK 0x000f0000 114 /* cache modes */ 115 #define MSM_BO_CACHED 0x00010000 116 #define MSM_BO_WC 0x00020000 117 #define MSM_BO_UNCACHED 0x00040000 /* deprecated, use MSM_BO_WC */ 118 #define MSM_BO_CACHED_COHERENT 0x080000 119 120 #define MSM_BO_FLAGS (MSM_BO_SCANOUT | \ 121 MSM_BO_GPU_READONLY | \ 122 MSM_BO_CACHE_MASK) 123 124 struct drm_msm_gem_new { 125 __u64 size; /* in */ 126 __u32 flags; /* in, mask of MSM_BO_x */ 127 __u32 handle; /* out */ 128 }; 129 130 /* Get or set GEM buffer info. The requested value can be passed 131 * directly in 'value', or for data larger than 64b 'value' is a 132 * pointer to userspace buffer, with 'len' specifying the number of 133 * bytes copied into that buffer. For info returned by pointer, 134 * calling the GEM_INFO ioctl with null 'value' will return the 135 * required buffer size in 'len' 136 */ 137 #define MSM_INFO_GET_OFFSET 0x00 /* get mmap() offset, returned by value */ 138 #define MSM_INFO_GET_IOVA 0x01 /* get iova, returned by value */ 139 #define MSM_INFO_SET_NAME 0x02 /* set the debug name (by pointer) */ 140 #define MSM_INFO_GET_NAME 0x03 /* get debug name, returned by pointer */ 141 #define MSM_INFO_SET_IOVA 0x04 /* set the iova, passed by value */ 142 #define MSM_INFO_GET_FLAGS 0x05 /* get the MSM_BO_x flags */ 143 #define MSM_INFO_SET_METADATA 0x06 /* set userspace metadata */ 144 #define MSM_INFO_GET_METADATA 0x07 /* get userspace metadata */ 145 146 struct drm_msm_gem_info { 147 __u32 handle; /* in */ 148 __u32 info; /* in - one of MSM_INFO_* */ 149 __u64 value; /* in or out */ 150 __u32 len; /* in or out */ 151 __u32 pad; 152 }; 153 154 #define MSM_PREP_READ 0x01 155 #define MSM_PREP_WRITE 0x02 156 #define MSM_PREP_NOSYNC 0x04 157 #define MSM_PREP_BOOST 0x08 158 159 #define MSM_PREP_FLAGS (MSM_PREP_READ | \ 160 MSM_PREP_WRITE | \ 161 MSM_PREP_NOSYNC | \ 162 MSM_PREP_BOOST | \ 163 0) 164 165 struct drm_msm_gem_cpu_prep { 166 __u32 handle; /* in */ 167 __u32 op; /* in, mask of MSM_PREP_x */ 168 struct drm_msm_timespec timeout; /* in */ 169 }; 170 171 struct drm_msm_gem_cpu_fini { 172 __u32 handle; /* in */ 173 }; 174 175 /* 176 * Cmdstream Submission: 177 */ 178 179 /* The value written into the cmdstream is logically: 180 * 181 * ((relocbuf->gpuaddr + reloc_offset) << shift) | or 182 * 183 * When we have GPU's w/ >32bit ptrs, it should be possible to deal 184 * with this by emit'ing two reloc entries with appropriate shift 185 * values. Or a new MSM_SUBMIT_CMD_x type would also be an option. 186 * 187 * NOTE that reloc's must be sorted by order of increasing submit_offset, 188 * otherwise EINVAL. 189 */ 190 struct drm_msm_gem_submit_reloc { 191 __u32 submit_offset; /* in, offset from submit_bo */ 192 #ifdef __cplusplus 193 __u32 _or; /* in, value OR'd with result */ 194 #else 195 __u32 or; /* in, value OR'd with result */ 196 #endif 197 __s32 shift; /* in, amount of left shift (can be negative) */ 198 __u32 reloc_idx; /* in, index of reloc_bo buffer */ 199 __u64 reloc_offset; /* in, offset from start of reloc_bo */ 200 }; 201 202 /* submit-types: 203 * BUF - this cmd buffer is executed normally. 204 * IB_TARGET_BUF - this cmd buffer is an IB target. Reloc's are 205 * processed normally, but the kernel does not setup an IB to 206 * this buffer in the first-level ringbuffer 207 * CTX_RESTORE_BUF - only executed if there has been a GPU context 208 * switch since the last SUBMIT ioctl 209 */ 210 #define MSM_SUBMIT_CMD_BUF 0x0001 211 #define MSM_SUBMIT_CMD_IB_TARGET_BUF 0x0002 212 #define MSM_SUBMIT_CMD_CTX_RESTORE_BUF 0x0003 213 struct drm_msm_gem_submit_cmd { 214 __u32 type; /* in, one of MSM_SUBMIT_CMD_x */ 215 __u32 submit_idx; /* in, index of submit_bo cmdstream buffer */ 216 __u32 submit_offset; /* in, offset into submit_bo */ 217 __u32 size; /* in, cmdstream size */ 218 __u32 pad; 219 __u32 nr_relocs; /* in, number of submit_reloc's */ 220 __u64 relocs; /* in, ptr to array of submit_reloc's */ 221 }; 222 223 /* Each buffer referenced elsewhere in the cmdstream submit (ie. the 224 * cmdstream buffer(s) themselves or reloc entries) has one (and only 225 * one) entry in the submit->bos[] table. 226 * 227 * As a optimization, the current buffer (gpu virtual address) can be 228 * passed back through the 'presumed' field. If on a subsequent reloc, 229 * userspace passes back a 'presumed' address that is still valid, 230 * then patching the cmdstream for this entry is skipped. This can 231 * avoid kernel needing to map/access the cmdstream bo in the common 232 * case. 233 */ 234 #define MSM_SUBMIT_BO_READ 0x0001 235 #define MSM_SUBMIT_BO_WRITE 0x0002 236 #define MSM_SUBMIT_BO_DUMP 0x0004 237 #define MSM_SUBMIT_BO_NO_IMPLICIT 0x0008 238 239 #define MSM_SUBMIT_BO_FLAGS (MSM_SUBMIT_BO_READ | \ 240 MSM_SUBMIT_BO_WRITE | \ 241 MSM_SUBMIT_BO_DUMP | \ 242 MSM_SUBMIT_BO_NO_IMPLICIT) 243 244 struct drm_msm_gem_submit_bo { 245 __u32 flags; /* in, mask of MSM_SUBMIT_BO_x */ 246 __u32 handle; /* in, GEM handle */ 247 __u64 presumed; /* in/out, presumed buffer address */ 248 }; 249 250 /* Valid submit ioctl flags: */ 251 #define MSM_SUBMIT_NO_IMPLICIT 0x80000000 /* disable implicit sync */ 252 #define MSM_SUBMIT_FENCE_FD_IN 0x40000000 /* enable input fence_fd */ 253 #define MSM_SUBMIT_FENCE_FD_OUT 0x20000000 /* enable output fence_fd */ 254 #define MSM_SUBMIT_SUDO 0x10000000 /* run submitted cmds from RB */ 255 #define MSM_SUBMIT_SYNCOBJ_IN 0x08000000 /* enable input syncobj */ 256 #define MSM_SUBMIT_SYNCOBJ_OUT 0x04000000 /* enable output syncobj */ 257 #define MSM_SUBMIT_FENCE_SN_IN 0x02000000 /* userspace passes in seqno fence */ 258 #define MSM_SUBMIT_FLAGS ( \ 259 MSM_SUBMIT_NO_IMPLICIT | \ 260 MSM_SUBMIT_FENCE_FD_IN | \ 261 MSM_SUBMIT_FENCE_FD_OUT | \ 262 MSM_SUBMIT_SUDO | \ 263 MSM_SUBMIT_SYNCOBJ_IN | \ 264 MSM_SUBMIT_SYNCOBJ_OUT | \ 265 MSM_SUBMIT_FENCE_SN_IN | \ 266 0) 267 268 #define MSM_SUBMIT_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */ 269 #define MSM_SUBMIT_SYNCOBJ_FLAGS ( \ 270 MSM_SUBMIT_SYNCOBJ_RESET | \ 271 0) 272 273 struct drm_msm_gem_submit_syncobj { 274 __u32 handle; /* in, syncobj handle. */ 275 __u32 flags; /* in, from MSM_SUBMIT_SYNCOBJ_FLAGS */ 276 __u64 point; /* in, timepoint for timeline syncobjs. */ 277 }; 278 279 /* Each cmdstream submit consists of a table of buffers involved, and 280 * one or more cmdstream buffers. This allows for conditional execution 281 * (context-restore), and IB buffers needed for per tile/bin draw cmds. 282 */ 283 struct drm_msm_gem_submit { 284 __u32 flags; /* MSM_PIPE_x | MSM_SUBMIT_x */ 285 __u32 fence; /* out (or in with MSM_SUBMIT_FENCE_SN_IN flag) */ 286 __u32 nr_bos; /* in, number of submit_bo's */ 287 __u32 nr_cmds; /* in, number of submit_cmd's */ 288 __u64 bos; /* in, ptr to array of submit_bo's */ 289 __u64 cmds; /* in, ptr to array of submit_cmd's */ 290 __s32 fence_fd; /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN/OUT) */ 291 __u32 queueid; /* in, submitqueue id */ 292 __u64 in_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ 293 __u64 out_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ 294 __u32 nr_in_syncobjs; /* in, number of entries in in_syncobj */ 295 __u32 nr_out_syncobjs; /* in, number of entries in out_syncobj. */ 296 __u32 syncobj_stride; /* in, stride of syncobj arrays. */ 297 __u32 pad; /*in, reserved for future use, always 0. */ 298 299 }; 300 301 #define MSM_WAIT_FENCE_BOOST 0x00000001 302 #define MSM_WAIT_FENCE_FLAGS ( \ 303 MSM_WAIT_FENCE_BOOST | \ 304 0) 305 306 /* The normal way to synchronize with the GPU is just to CPU_PREP on 307 * a buffer if you need to access it from the CPU (other cmdstream 308 * submission from same or other contexts, PAGE_FLIP ioctl, etc, all 309 * handle the required synchronization under the hood). This ioctl 310 * mainly just exists as a way to implement the gallium pipe_fence 311 * APIs without requiring a dummy bo to synchronize on. 312 */ 313 struct drm_msm_wait_fence { 314 __u32 fence; /* in */ 315 __u32 flags; /* in, bitmask of MSM_WAIT_FENCE_x */ 316 struct drm_msm_timespec timeout; /* in */ 317 __u32 queueid; /* in, submitqueue id */ 318 }; 319 320 /* madvise provides a way to tell the kernel in case a buffers contents 321 * can be discarded under memory pressure, which is useful for userspace 322 * bo cache where we want to optimistically hold on to buffer allocate 323 * and potential mmap, but allow the pages to be discarded under memory 324 * pressure. 325 * 326 * Typical usage would involve madvise(DONTNEED) when buffer enters BO 327 * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache. 328 * In the WILLNEED case, 'retained' indicates to userspace whether the 329 * backing pages still exist. 330 */ 331 #define MSM_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */ 332 #define MSM_MADV_DONTNEED 1 /* backing pages not needed */ 333 #define __MSM_MADV_PURGED 2 /* internal state */ 334 335 struct drm_msm_gem_madvise { 336 __u32 handle; /* in, GEM handle */ 337 __u32 madv; /* in, MSM_MADV_x */ 338 __u32 retained; /* out, whether backing store still exists */ 339 }; 340 341 /* 342 * Draw queues allow the user to set specific submission parameter. Command 343 * submissions specify a specific submitqueue to use. ID 0 is reserved for 344 * backwards compatibility as a "default" submitqueue 345 */ 346 347 #define MSM_SUBMITQUEUE_FLAGS (0) 348 349 /* 350 * The submitqueue priority should be between 0 and MSM_PARAM_PRIORITIES-1, 351 * a lower numeric value is higher priority. 352 */ 353 struct drm_msm_submitqueue { 354 __u32 flags; /* in, MSM_SUBMITQUEUE_x */ 355 __u32 prio; /* in, Priority level */ 356 __u32 id; /* out, identifier */ 357 }; 358 359 #define MSM_SUBMITQUEUE_PARAM_FAULTS 0 360 361 struct drm_msm_submitqueue_query { 362 __u64 data; 363 __u32 id; 364 __u32 param; 365 __u32 len; 366 __u32 pad; 367 }; 368 369 #define DRM_MSM_GET_PARAM 0x00 370 #define DRM_MSM_SET_PARAM 0x01 371 #define DRM_MSM_GEM_NEW 0x02 372 #define DRM_MSM_GEM_INFO 0x03 373 #define DRM_MSM_GEM_CPU_PREP 0x04 374 #define DRM_MSM_GEM_CPU_FINI 0x05 375 #define DRM_MSM_GEM_SUBMIT 0x06 376 #define DRM_MSM_WAIT_FENCE 0x07 377 #define DRM_MSM_GEM_MADVISE 0x08 378 /* placeholder: 379 #define DRM_MSM_GEM_SVM_NEW 0x09 380 */ 381 #define DRM_MSM_SUBMITQUEUE_NEW 0x0A 382 #define DRM_MSM_SUBMITQUEUE_CLOSE 0x0B 383 #define DRM_MSM_SUBMITQUEUE_QUERY 0x0C 384 385 #define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) 386 #define DRM_IOCTL_MSM_SET_PARAM DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SET_PARAM, struct drm_msm_param) 387 #define DRM_IOCTL_MSM_GEM_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new) 388 #define DRM_IOCTL_MSM_GEM_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_INFO, struct drm_msm_gem_info) 389 #define DRM_IOCTL_MSM_GEM_CPU_PREP DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_PREP, struct drm_msm_gem_cpu_prep) 390 #define DRM_IOCTL_MSM_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini) 391 #define DRM_IOCTL_MSM_GEM_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit) 392 #define DRM_IOCTL_MSM_WAIT_FENCE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence) 393 #define DRM_IOCTL_MSM_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_MADVISE, struct drm_msm_gem_madvise) 394 #define DRM_IOCTL_MSM_SUBMITQUEUE_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_NEW, struct drm_msm_submitqueue) 395 #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32) 396 #define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query) 397 398 #if defined(__cplusplus) 399 } 400 #endif 401 402 #endif /* __MSM_DRM_H__ */ 403