drivers/staging/gma500/psb_ttm_fence_user.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
   4  * All Rights Reserved.
   5  * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA
   6  * All Rights Reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms and conditions of the GNU General Public License,
  10  * version 2, as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  **************************************************************************/
  22 /*
  23  * Authors
  24  * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
  25  */
  26
  27 #ifndef TTM_FENCE_USER_H
  28 #define TTM_FENCE_USER_H
  29
  30 #if !defined(__KERNEL__) && !defined(_KERNEL)
  31 #include <stdint.h>
  32 #endif
  33
  34 #define TTM_FENCE_MAJOR 0
  35 #define TTM_FENCE_MINOR 1
  36 #define TTM_FENCE_PL    0
  37 #define TTM_FENCE_DATE  "080819"
  38
  39 /**
  40  * struct ttm_fence_signaled_req
  41  *
  42  * @handle: Handle to the fence object. Input.
  43  *
  44  * @fence_type: Fence types we want to flush. Input.
  45  *
  46  * @flush: Boolean. Flush the indicated fence_types. Input.
  47  *
  48  * Argument to the TTM_FENCE_SIGNALED ioctl.
  49  */
  50
  51 struct ttm_fence_signaled_req {
  52         uint32_t handle;
  53         uint32_t fence_type;
  54         int32_t flush;
  55         uint32_t pad64;
  56 };
  57
  58 /**
  59  * struct ttm_fence_rep
  60  *
  61  * @signaled_types: Fence type that has signaled.
  62  *
  63  * @fence_error: Command execution error.
  64  * Hardware errors that are consequences of the execution
  65  * of the command stream preceding the fence are reported
  66  * here.
  67  *
  68  * Output argument to the TTM_FENCE_SIGNALED and
  69  * TTM_FENCE_FINISH ioctls.
  70  */
  71
  72 struct ttm_fence_rep {
  73         uint32_t signaled_types;
  74         uint32_t fence_error;
  75 };
  76
  77 union ttm_fence_signaled_arg {
  78         struct ttm_fence_signaled_req req;
  79         struct ttm_fence_rep rep;
  80 };
  81
  82 /*
  83  * Waiting mode flags for the TTM_FENCE_FINISH ioctl.
  84  *
  85  * TTM_FENCE_FINISH_MODE_LAZY: Allow for sleeps during polling
  86  * wait.
  87  *
  88  * TTM_FENCE_FINISH_MODE_NO_BLOCK: Don't block waiting for GPU,
  89  * but return -EBUSY if the buffer is busy.
  90  */
  91
  92 #define TTM_FENCE_FINISH_MODE_LAZY     (1 << 0)
  93 #define TTM_FENCE_FINISH_MODE_NO_BLOCK (1 << 1)
  94
  95 /**
  96  * struct ttm_fence_finish_req
  97  *
  98  * @handle: Handle to the fence object. Input.
  99  *
 100  * @fence_type: Fence types we want to finish.
 101  *
 102  * @mode: Wait mode.
 103  *
 104  * Input to the TTM_FENCE_FINISH ioctl.
 105  */
 106
 107 struct ttm_fence_finish_req {
 108         uint32_t handle;
 109         uint32_t fence_type;
 110         uint32_t mode;
 111         uint32_t pad64;
 112 };
 113
 114 union ttm_fence_finish_arg {
 115         struct ttm_fence_finish_req req;
 116         struct ttm_fence_rep rep;
 117 };
 118
 119 /**
 120  * struct ttm_fence_unref_arg
 121  *
 122  * @handle: Handle to the fence object.
 123  *
 124  * Argument to the TTM_FENCE_UNREF ioctl.
 125  */
 126
 127 struct ttm_fence_unref_arg {
 128         uint32_t handle;
 129         uint32_t pad64;
 130 };
 131
 132 /*
 133  * Ioctl offsets frome extenstion start.
 134  */
 135
 136 #define TTM_FENCE_SIGNALED 0x01
 137 #define TTM_FENCE_FINISH   0x02
 138 #define TTM_FENCE_UNREF    0x03
 139
 140 #endif