xref: /linux/include/uapi/drm/msm_drm.h (revision 260f6f4fda93c8485c8037865c941b42b9cba5d2)
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 #define MSM_PARAM_RAYTRACING 0x11 /* RO */
91 #define MSM_PARAM_UBWC_SWIZZLE 0x12 /* RO */
92 #define MSM_PARAM_MACROTILE_MODE 0x13 /* RO */
93 #define MSM_PARAM_UCHE_TRAP_BASE 0x14 /* RO */
94 /* PRR (Partially Resident Region) is required for sparse residency: */
95 #define MSM_PARAM_HAS_PRR    0x15  /* RO */
96 /* MSM_PARAM_EN_VM_BIND is set to 1 to enable VM_BIND ops.
97  *
98  * With VM_BIND enabled, userspace is required to allocate iova and use the
99  * VM_BIND ops for map/unmap ioctls.  MSM_INFO_SET_IOVA and MSM_INFO_GET_IOVA
100  * will be rejected.  (The latter does not have a sensible meaning when a BO
101  * can have multiple and/or partial mappings.)
102  *
103  * With VM_BIND enabled, userspace does not include a submit_bo table in the
104  * SUBMIT ioctl (this will be rejected), the resident set is determined by
105  * the the VM_BIND ops.
106  *
107  * Enabling VM_BIND will fail on devices which do not have per-process pgtables.
108  * And it is not allowed to disable VM_BIND once it has been enabled.
109  *
110  * Enabling VM_BIND should be done (attempted) prior to allocating any BOs or
111  * submitqueues of type MSM_SUBMITQUEUE_VM_BIND.
112  *
113  * Relatedly, when VM_BIND mode is enabled, the kernel will not try to recover
114  * from GPU faults or failed async VM_BIND ops, in particular because it is
115  * difficult to communicate to userspace which op failed so that userspace
116  * could rewind and try again.  When the VM is marked unusable, the SUBMIT
117  * ioctl will throw -EPIPE.
118  */
119 #define MSM_PARAM_EN_VM_BIND 0x16  /* WO, once */
120 
121 /* For backwards compat.  The original support for preemption was based on
122  * a single ring per priority level so # of priority levels equals the #
123  * of rings.  With drm/scheduler providing additional levels of priority,
124  * the number of priorities is greater than the # of rings.  The param is
125  * renamed to better reflect this.
126  */
127 #define MSM_PARAM_NR_RINGS   MSM_PARAM_PRIORITIES
128 
129 struct drm_msm_param {
130 	__u32 pipe;           /* in, MSM_PIPE_x */
131 	__u32 param;          /* in, MSM_PARAM_x */
132 	__u64 value;          /* out (get_param) or in (set_param) */
133 	__u32 len;            /* zero for non-pointer params */
134 	__u32 pad;            /* must be zero */
135 };
136 
137 /*
138  * GEM buffers:
139  */
140 
141 #define MSM_BO_SCANOUT       0x00000001     /* scanout capable */
142 #define MSM_BO_GPU_READONLY  0x00000002
143 /* Private buffers do not need to be explicitly listed in the SUBMIT
144  * ioctl, unless referenced by a drm_msm_gem_submit_cmd.  Private
145  * buffers may NOT be imported/exported or used for scanout (or any
146  * other situation where buffers can be indefinitely pinned, but
147  * cases other than scanout are all kernel owned BOs which are not
148  * visible to userspace).
149  *
150  * In exchange for those constraints, all private BOs associated with
151  * a single context (drm_file) share a single dma_resv, and if there
152  * has been no eviction since the last submit, there are no per-BO
153  * bookeeping to do, significantly cutting the SUBMIT overhead.
154  */
155 #define MSM_BO_NO_SHARE      0x00000004
156 #define MSM_BO_CACHE_MASK    0x000f0000
157 /* cache modes */
158 #define MSM_BO_CACHED        0x00010000
159 #define MSM_BO_WC            0x00020000
160 #define MSM_BO_UNCACHED      0x00040000 /* deprecated, use MSM_BO_WC */
161 #define MSM_BO_CACHED_COHERENT 0x080000
162 
163 #define MSM_BO_FLAGS         (MSM_BO_SCANOUT | \
164                               MSM_BO_GPU_READONLY | \
165                               MSM_BO_NO_SHARE | \
166                               MSM_BO_CACHE_MASK)
167 
168 struct drm_msm_gem_new {
169 	__u64 size;           /* in */
170 	__u32 flags;          /* in, mask of MSM_BO_x */
171 	__u32 handle;         /* out */
172 };
173 
174 /* Get or set GEM buffer info.  The requested value can be passed
175  * directly in 'value', or for data larger than 64b 'value' is a
176  * pointer to userspace buffer, with 'len' specifying the number of
177  * bytes copied into that buffer.  For info returned by pointer,
178  * calling the GEM_INFO ioctl with null 'value' will return the
179  * required buffer size in 'len'
180  */
181 #define MSM_INFO_GET_OFFSET	0x00   /* get mmap() offset, returned by value */
182 #define MSM_INFO_GET_IOVA	0x01   /* get iova, returned by value */
183 #define MSM_INFO_SET_NAME	0x02   /* set the debug name (by pointer) */
184 #define MSM_INFO_GET_NAME	0x03   /* get debug name, returned by pointer */
185 #define MSM_INFO_SET_IOVA	0x04   /* set the iova, passed by value */
186 #define MSM_INFO_GET_FLAGS	0x05   /* get the MSM_BO_x flags */
187 #define MSM_INFO_SET_METADATA	0x06   /* set userspace metadata */
188 #define MSM_INFO_GET_METADATA	0x07   /* get userspace metadata */
189 
190 struct drm_msm_gem_info {
191 	__u32 handle;         /* in */
192 	__u32 info;           /* in - one of MSM_INFO_* */
193 	__u64 value;          /* in or out */
194 	__u32 len;            /* in or out */
195 	__u32 pad;
196 };
197 
198 #define MSM_PREP_READ        0x01
199 #define MSM_PREP_WRITE       0x02
200 #define MSM_PREP_NOSYNC      0x04
201 #define MSM_PREP_BOOST       0x08
202 
203 #define MSM_PREP_FLAGS       (MSM_PREP_READ | \
204 			      MSM_PREP_WRITE | \
205 			      MSM_PREP_NOSYNC | \
206 			      MSM_PREP_BOOST | \
207 			      0)
208 
209 struct drm_msm_gem_cpu_prep {
210 	__u32 handle;         /* in */
211 	__u32 op;             /* in, mask of MSM_PREP_x */
212 	struct drm_msm_timespec timeout;   /* in */
213 };
214 
215 struct drm_msm_gem_cpu_fini {
216 	__u32 handle;         /* in */
217 };
218 
219 /*
220  * Cmdstream Submission:
221  */
222 
223 #define MSM_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */
224 #define MSM_SYNCOBJ_FLAGS ( \
225 		MSM_SYNCOBJ_RESET | \
226 		0)
227 
228 struct drm_msm_syncobj {
229 	__u32 handle;     /* in, syncobj handle. */
230 	__u32 flags;      /* in, from MSM_SUBMIT_SYNCOBJ_FLAGS */
231 	__u64 point;      /* in, timepoint for timeline syncobjs. */
232 };
233 
234 /* The value written into the cmdstream is logically:
235  *
236  *   ((relocbuf->gpuaddr + reloc_offset) << shift) | or
237  *
238  * When we have GPU's w/ >32bit ptrs, it should be possible to deal
239  * with this by emit'ing two reloc entries with appropriate shift
240  * values.  Or a new MSM_SUBMIT_CMD_x type would also be an option.
241  *
242  * NOTE that reloc's must be sorted by order of increasing submit_offset,
243  * otherwise EINVAL.
244  */
245 struct drm_msm_gem_submit_reloc {
246 	__u32 submit_offset;  /* in, offset from submit_bo */
247 #ifdef __cplusplus
248 	__u32 _or;            /* in, value OR'd with result */
249 #else
250 	__u32 or;             /* in, value OR'd with result */
251 #endif
252 	__s32 shift;          /* in, amount of left shift (can be negative) */
253 	__u32 reloc_idx;      /* in, index of reloc_bo buffer */
254 	__u64 reloc_offset;   /* in, offset from start of reloc_bo */
255 };
256 
257 /* submit-types:
258  *   BUF - this cmd buffer is executed normally.
259  *   IB_TARGET_BUF - this cmd buffer is an IB target.  Reloc's are
260  *      processed normally, but the kernel does not setup an IB to
261  *      this buffer in the first-level ringbuffer
262  *   CTX_RESTORE_BUF - only executed if there has been a GPU context
263  *      switch since the last SUBMIT ioctl
264  */
265 #define MSM_SUBMIT_CMD_BUF             0x0001
266 #define MSM_SUBMIT_CMD_IB_TARGET_BUF   0x0002
267 #define MSM_SUBMIT_CMD_CTX_RESTORE_BUF 0x0003
268 struct drm_msm_gem_submit_cmd {
269 	__u32 type;           /* in, one of MSM_SUBMIT_CMD_x */
270 	__u32 submit_idx;     /* in, index of submit_bo cmdstream buffer */
271 	__u32 submit_offset;  /* in, offset into submit_bo */
272 	__u32 size;           /* in, cmdstream size */
273 	__u32 pad;
274 	__u32 nr_relocs;      /* in, number of submit_reloc's */
275 	union {
276 		__u64 relocs; /* in, ptr to array of submit_reloc's */
277 		__u64 iova;   /* cmdstream address (for VM_BIND contexts) */
278 	};
279 };
280 
281 /* Each buffer referenced elsewhere in the cmdstream submit (ie. the
282  * cmdstream buffer(s) themselves or reloc entries) has one (and only
283  * one) entry in the submit->bos[] table.
284  *
285  * As a optimization, the current buffer (gpu virtual address) can be
286  * passed back through the 'presumed' field.  If on a subsequent reloc,
287  * userspace passes back a 'presumed' address that is still valid,
288  * then patching the cmdstream for this entry is skipped.  This can
289  * avoid kernel needing to map/access the cmdstream bo in the common
290  * case.
291  */
292 #define MSM_SUBMIT_BO_READ             0x0001
293 #define MSM_SUBMIT_BO_WRITE            0x0002
294 #define MSM_SUBMIT_BO_DUMP             0x0004
295 #define MSM_SUBMIT_BO_NO_IMPLICIT      0x0008
296 
297 #define MSM_SUBMIT_BO_FLAGS            (MSM_SUBMIT_BO_READ | \
298 					MSM_SUBMIT_BO_WRITE | \
299 					MSM_SUBMIT_BO_DUMP | \
300 					MSM_SUBMIT_BO_NO_IMPLICIT)
301 
302 struct drm_msm_gem_submit_bo {
303 	__u32 flags;          /* in, mask of MSM_SUBMIT_BO_x */
304 	__u32 handle;         /* in, GEM handle */
305 	__u64 presumed;       /* in/out, presumed buffer address */
306 };
307 
308 /* Valid submit ioctl flags: */
309 #define MSM_SUBMIT_NO_IMPLICIT   0x80000000 /* disable implicit sync */
310 #define MSM_SUBMIT_FENCE_FD_IN   0x40000000 /* enable input fence_fd */
311 #define MSM_SUBMIT_FENCE_FD_OUT  0x20000000 /* enable output fence_fd */
312 #define MSM_SUBMIT_SUDO          0x10000000 /* run submitted cmds from RB */
313 #define MSM_SUBMIT_SYNCOBJ_IN    0x08000000 /* enable input syncobj */
314 #define MSM_SUBMIT_SYNCOBJ_OUT   0x04000000 /* enable output syncobj */
315 #define MSM_SUBMIT_FENCE_SN_IN   0x02000000 /* userspace passes in seqno fence */
316 #define MSM_SUBMIT_FLAGS                ( \
317 		MSM_SUBMIT_NO_IMPLICIT   | \
318 		MSM_SUBMIT_FENCE_FD_IN   | \
319 		MSM_SUBMIT_FENCE_FD_OUT  | \
320 		MSM_SUBMIT_SUDO          | \
321 		MSM_SUBMIT_SYNCOBJ_IN    | \
322 		MSM_SUBMIT_SYNCOBJ_OUT   | \
323 		MSM_SUBMIT_FENCE_SN_IN   | \
324 		0)
325 
326 /* Each cmdstream submit consists of a table of buffers involved, and
327  * one or more cmdstream buffers.  This allows for conditional execution
328  * (context-restore), and IB buffers needed for per tile/bin draw cmds.
329  */
330 struct drm_msm_gem_submit {
331 	__u32 flags;          /* MSM_PIPE_x | MSM_SUBMIT_x */
332 	__u32 fence;          /* out (or in with MSM_SUBMIT_FENCE_SN_IN flag) */
333 	__u32 nr_bos;         /* in, number of submit_bo's */
334 	__u32 nr_cmds;        /* in, number of submit_cmd's */
335 	__u64 bos;            /* in, ptr to array of submit_bo's */
336 	__u64 cmds;           /* in, ptr to array of submit_cmd's */
337 	__s32 fence_fd;       /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN/OUT) */
338 	__u32 queueid;        /* in, submitqueue id */
339 	__u64 in_syncobjs;    /* in, ptr to array of drm_msm_syncobj */
340 	__u64 out_syncobjs;   /* in, ptr to array of drm_msm_syncobj */
341 	__u32 nr_in_syncobjs; /* in, number of entries in in_syncobj */
342 	__u32 nr_out_syncobjs; /* in, number of entries in out_syncobj. */
343 	__u32 syncobj_stride; /* in, stride of syncobj arrays. */
344 	__u32 pad;            /*in, reserved for future use, always 0. */
345 };
346 
347 #define MSM_VM_BIND_OP_UNMAP	0
348 #define MSM_VM_BIND_OP_MAP	1
349 #define MSM_VM_BIND_OP_MAP_NULL	2
350 
351 #define MSM_VM_BIND_OP_DUMP	1
352 #define MSM_VM_BIND_OP_FLAGS ( \
353 		MSM_VM_BIND_OP_DUMP | \
354 		0)
355 
356 /**
357  * struct drm_msm_vm_bind_op - bind/unbind op to run
358  */
359 struct drm_msm_vm_bind_op {
360 	/** @op: one of MSM_VM_BIND_OP_x */
361 	__u32 op;
362 	/** @handle: GEM object handle, MBZ for UNMAP or MAP_NULL */
363 	__u32 handle;
364 	/** @obj_offset: Offset into GEM object, MBZ for UNMAP or MAP_NULL */
365 	__u64 obj_offset;
366 	/** @iova: Address to operate on */
367 	__u64 iova;
368 	/** @range: Number of bites to to map/unmap */
369 	__u64 range;
370 	/** @flags: Bitmask of MSM_VM_BIND_OP_FLAG_x */
371 	__u32 flags;
372 	/** @pad: MBZ */
373 	__u32 pad;
374 };
375 
376 #define MSM_VM_BIND_FENCE_FD_IN		0x00000001
377 #define MSM_VM_BIND_FENCE_FD_OUT	0x00000002
378 #define MSM_VM_BIND_FLAGS ( \
379 		MSM_VM_BIND_FENCE_FD_IN | \
380 		MSM_VM_BIND_FENCE_FD_OUT | \
381 		0)
382 
383 /**
384  * struct drm_msm_vm_bind - Input of &DRM_IOCTL_MSM_VM_BIND
385  */
386 struct drm_msm_vm_bind {
387 	/** @flags: in, bitmask of MSM_VM_BIND_x */
388 	__u32 flags;
389 	/** @nr_ops: the number of bind ops in this ioctl */
390 	__u32 nr_ops;
391 	/** @fence_fd: in/out fence fd (see MSM_VM_BIND_FENCE_FD_IN/OUT) */
392 	__s32 fence_fd;
393 	/** @queue_id: in, submitqueue id */
394 	__u32 queue_id;
395 	/** @in_syncobjs: in, ptr to array of drm_msm_gem_syncobj */
396 	__u64 in_syncobjs;
397 	/** @out_syncobjs: in, ptr to array of drm_msm_gem_syncobj */
398 	__u64 out_syncobjs;
399 	/** @nr_in_syncobjs: in, number of entries in in_syncobj */
400 	__u32 nr_in_syncobjs;
401 	/** @nr_out_syncobjs: in, number of entries in out_syncobj */
402 	__u32 nr_out_syncobjs;
403 	/** @syncobj_stride: in, stride of syncobj arrays */
404 	__u32 syncobj_stride;
405 	/** @op_stride: sizeof each struct drm_msm_vm_bind_op in @ops */
406 	__u32 op_stride;
407 	union {
408 		/** @op: used if num_ops == 1 */
409 		struct drm_msm_vm_bind_op op;
410 		/** @ops: userptr to array of drm_msm_vm_bind_op if num_ops > 1 */
411 		__u64 ops;
412 	};
413 };
414 
415 #define MSM_WAIT_FENCE_BOOST	0x00000001
416 #define MSM_WAIT_FENCE_FLAGS	( \
417 		MSM_WAIT_FENCE_BOOST | \
418 		0)
419 
420 /* The normal way to synchronize with the GPU is just to CPU_PREP on
421  * a buffer if you need to access it from the CPU (other cmdstream
422  * submission from same or other contexts, PAGE_FLIP ioctl, etc, all
423  * handle the required synchronization under the hood).  This ioctl
424  * mainly just exists as a way to implement the gallium pipe_fence
425  * APIs without requiring a dummy bo to synchronize on.
426  */
427 struct drm_msm_wait_fence {
428 	__u32 fence;          /* in */
429 	__u32 flags;          /* in, bitmask of MSM_WAIT_FENCE_x */
430 	struct drm_msm_timespec timeout;   /* in */
431 	__u32 queueid;         /* in, submitqueue id */
432 };
433 
434 /* madvise provides a way to tell the kernel in case a buffers contents
435  * can be discarded under memory pressure, which is useful for userspace
436  * bo cache where we want to optimistically hold on to buffer allocate
437  * and potential mmap, but allow the pages to be discarded under memory
438  * pressure.
439  *
440  * Typical usage would involve madvise(DONTNEED) when buffer enters BO
441  * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache.
442  * In the WILLNEED case, 'retained' indicates to userspace whether the
443  * backing pages still exist.
444  */
445 #define MSM_MADV_WILLNEED 0       /* backing pages are needed, status returned in 'retained' */
446 #define MSM_MADV_DONTNEED 1       /* backing pages not needed */
447 #define __MSM_MADV_PURGED 2       /* internal state */
448 
449 struct drm_msm_gem_madvise {
450 	__u32 handle;         /* in, GEM handle */
451 	__u32 madv;           /* in, MSM_MADV_x */
452 	__u32 retained;       /* out, whether backing store still exists */
453 };
454 
455 /*
456  * Draw queues allow the user to set specific submission parameter. Command
457  * submissions specify a specific submitqueue to use.  ID 0 is reserved for
458  * backwards compatibility as a "default" submitqueue.
459  *
460  * Because VM_BIND async updates happen on the CPU, they must run on a
461  * virtual queue created with the flag MSM_SUBMITQUEUE_VM_BIND.  If we had
462  * a way to do pgtable updates on the GPU, we could drop this restriction.
463  */
464 
465 #define MSM_SUBMITQUEUE_ALLOW_PREEMPT	0x00000001
466 #define MSM_SUBMITQUEUE_VM_BIND	0x00000002  /* virtual queue for VM_BIND ops */
467 
468 #define MSM_SUBMITQUEUE_FLAGS		    ( \
469 		MSM_SUBMITQUEUE_ALLOW_PREEMPT | \
470 		MSM_SUBMITQUEUE_VM_BIND | \
471 		0)
472 
473 /*
474  * The submitqueue priority should be between 0 and MSM_PARAM_PRIORITIES-1,
475  * a lower numeric value is higher priority.
476  */
477 struct drm_msm_submitqueue {
478 	__u32 flags;   /* in, MSM_SUBMITQUEUE_x */
479 	__u32 prio;    /* in, Priority level */
480 	__u32 id;      /* out, identifier */
481 };
482 
483 #define MSM_SUBMITQUEUE_PARAM_FAULTS   0
484 
485 struct drm_msm_submitqueue_query {
486 	__u64 data;
487 	__u32 id;
488 	__u32 param;
489 	__u32 len;
490 	__u32 pad;
491 };
492 
493 #define DRM_MSM_GET_PARAM              0x00
494 #define DRM_MSM_SET_PARAM              0x01
495 #define DRM_MSM_GEM_NEW                0x02
496 #define DRM_MSM_GEM_INFO               0x03
497 #define DRM_MSM_GEM_CPU_PREP           0x04
498 #define DRM_MSM_GEM_CPU_FINI           0x05
499 #define DRM_MSM_GEM_SUBMIT             0x06
500 #define DRM_MSM_WAIT_FENCE             0x07
501 #define DRM_MSM_GEM_MADVISE            0x08
502 /* placeholder:
503 #define DRM_MSM_GEM_SVM_NEW            0x09
504  */
505 #define DRM_MSM_SUBMITQUEUE_NEW        0x0A
506 #define DRM_MSM_SUBMITQUEUE_CLOSE      0x0B
507 #define DRM_MSM_SUBMITQUEUE_QUERY      0x0C
508 #define DRM_MSM_VM_BIND                0x0D
509 
510 #define DRM_IOCTL_MSM_GET_PARAM        DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param)
511 #define DRM_IOCTL_MSM_SET_PARAM        DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SET_PARAM, struct drm_msm_param)
512 #define DRM_IOCTL_MSM_GEM_NEW          DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new)
513 #define DRM_IOCTL_MSM_GEM_INFO         DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_INFO, struct drm_msm_gem_info)
514 #define DRM_IOCTL_MSM_GEM_CPU_PREP     DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_PREP, struct drm_msm_gem_cpu_prep)
515 #define DRM_IOCTL_MSM_GEM_CPU_FINI     DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_GEM_CPU_FINI, struct drm_msm_gem_cpu_fini)
516 #define DRM_IOCTL_MSM_GEM_SUBMIT       DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_SUBMIT, struct drm_msm_gem_submit)
517 #define DRM_IOCTL_MSM_WAIT_FENCE       DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_WAIT_FENCE, struct drm_msm_wait_fence)
518 #define DRM_IOCTL_MSM_GEM_MADVISE      DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_MADVISE, struct drm_msm_gem_madvise)
519 #define DRM_IOCTL_MSM_SUBMITQUEUE_NEW    DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_NEW, struct drm_msm_submitqueue)
520 #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE  DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32)
521 #define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY  DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query)
522 #define DRM_IOCTL_MSM_VM_BIND          DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_VM_BIND, struct drm_msm_vm_bind)
523 
524 #if defined(__cplusplus)
525 }
526 #endif
527 
528 #endif /* __MSM_DRM_H__ */
529