virtio_rng.0 
     €ДГ„DяВБА ?ч     /*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __MSM_DRM_H__
#define __MSM_DRM_H__

#include "drm.h"

#if defined(__cplusplus)
extern "C" {
#endif

/* Please note that modifications to all structs defined here are
 * subject to backwards-compatibility constraints:
 *  1) Do not use pointers, use __u64 instead for 32 bit / 64 bit
 *     user/kernel compatibility
 *  2) Keep fields aligned to their size
 *  3) Because of how drm_ioctl() works, we can add new fields at
 *     the end of an ioctl if some care is taken: drm_ioctl() will
 *     zero out the new fields at the tail of the ioctl, so a zero
 *     value should have a backwards compatible meaning.  And for
 *     output params, userspace won't see the newly added output
 *     fields.. so that has to be somehow ok.
 */

#define MSM_PIPE_NONE        0x00
#define MSM_PIPE_2D0         0x01
#define MSM_PIPE_2D1         0x02
#define MSM_PIPE_3D0         0x10

/* The pipe-id just uses the lower bits, so can be OR'd with flags in
 * the upper 16 bits (which could be extended further, if needed, maybe
 * we extend/overload the pipe-id some day to deal with multiple rings,
 * but even then I don't think we need the full lower 16 bits).
 */
#define MSM_PIPE_ID_MASK     0xffff
#define MSM_PIPE_ID(x)       ((x) & MSM_PIPE_ID_MASK)
#define MSM_PIPE_FLAGS(x)    ((x) & ~MSM_PIPE_ID_MASK)

/* timeouts are specified in clock-monotonic absolute times (to simplify
 * restarting interrupted ioctls).  The following struct is logically the
 * same as 'struct timespec' but 32/64b ABI safe.
 */
struct drm_msm_timespec {
	__s64 tv_sec;          /* seconds */
	__s64 tv_nsec;         /* nanoseconds */
};

/* Below "RO" indicates a read-only param, "WO" indicates write-only, and
 * "RW" indicates a param that can be both read (GET_PARAM) and written
 * (SET_PARAM)
 */
#define MSM_PARAM_GPU_ID     0x01  /* RO */
#define MSM_PARAM_GMEM_SIZE  0x02  /* RO */
#define MSM_PARAM_CHIP_ID    0x03  /* RO */
#define MSM_PARAM_MAX_FREQ   0x04  /* RO */
#define MSM_PARAM_TIMESTAMP  0x05  /* RO */
#define MSM_PARAM_GMEM_BASE  0x06  /* RO */
#define MSM_PARAM_PRIORITIES 0x07  /* RO: The # of priority levels */
#define MSM_PARAM_PP_PGTABLE 0x08  /* RO: Deprecated, always returns zero */
#define MSM_PARAM_FAULTS     0x09  /* RO */
#define MSM_PARAM_SUSPENDS   0x0a  /* RO */
#define MSM_PARAM_SYSPROF    0x0b  /* WO: 1 preserves perfcntrs, 2 also disables suspend */
#define MSM_PARAM_COMM       0x0c  /* WO: override for task->comm */
#define MSM_PARAM_CMDLINE    0x0d  /* WO: override for task cmdline */
#define MSM_PARAM_VA_START   0x0e  /* RO: start of valid GPU iova range */
#define MSM_PARAM_VA_SIZE    0x0f  /* RO: size of valid GPU iova range (bytes) */
#define MSM_PARAM_HIGHEST_BANK_BIT 0x10 /* RO */
#define MSM_PARAM_RAYTRACING 0x11 /* RO */
#define MSM_PARAM_UBWC_SWIZZLE 0x12 /* RO */
#define MSM_PARAM_MACROTILE_MODE 0x13 /* RO */