src/mesa/drivers/dri/nouveau/nouveau_sync.c

   1 /*
   2  * Copyright (C) 2007 Ben Skeggs.
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sublicense, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #include "vblank.h" /* for DO_USLEEP */
  29
  30 #include "nouveau_context.h"
  31 #include "nouveau_fifo.h"
  32 #include "nouveau_mem.h"
  33 #include "nouveau_msg.h"
  34 #include "nouveau_object.h"
  35 #include "nouveau_reg.h"
  36 #include "nouveau_sync.h"
  37
  38 #define NOTIFIER(__v) \
  39         nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx); \
  40         volatile uint32_t *__v = (void*)nmesa->notifier_block + notifier->offset
  41
  42 struct drm_nouveau_notifierobj_alloc *
  43 nouveau_notifier_new(GLcontext *ctx, GLuint handle, GLuint count)
  44 {
  45         nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
  46         struct drm_nouveau_notifierobj_alloc *notifier;
  47         int ret;
  48
  49 #ifdef NOUVEAU_RING_DEBUG
  50         return NULL;
  51 #endif
  52         notifier = CALLOC_STRUCT(drm_nouveau_notifierobj_alloc);
  53         if (!notifier)
  54                 return NULL;
  55
  56         notifier->channel = nmesa->fifo.channel;
  57         notifier->handle  = handle;
  58         notifier->count   = count;
  59         ret = drmCommandWriteRead(nmesa->driFd, DRM_NOUVEAU_NOTIFIEROBJ_ALLOC,
  60                                   notifier, sizeof(*notifier));
  61         if (ret) {
  62                 MESSAGE("Failed to create notifier 0x%08x: %d\n", handle, ret);
  63                 FREE(notifier);
  64                 return NULL;
  65         }
  66
  67         return notifier;
  68 }
  69
  70 void
  71 nouveau_notifier_destroy(GLcontext *ctx,
  72                          struct drm_nouveau_notifierobj_alloc *notifier)
  73 {
  74         /*XXX: free notifier object.. */
  75         FREE(notifier);
  76 }
  77
  78 void
  79 nouveau_notifier_reset(GLcontext *ctx,
  80                        struct drm_nouveau_notifierobj_alloc *notifier,
  81                        GLuint id)
  82 {
  83         NOTIFIER(n);
  84
  85 #ifdef NOUVEAU_RING_DEBUG
  86         return;
  87 #endif
  88
  89         n[NV_NOTIFY_TIME_0      /4] = 0x00000000;
  90         n[NV_NOTIFY_TIME_1      /4] = 0x00000000;
  91         n[NV_NOTIFY_RETURN_VALUE/4] = 0x00000000;
  92         n[NV_NOTIFY_STATE       /4] = (NV_NOTIFY_STATE_STATUS_IN_PROCESS <<
  93                                        NV_NOTIFY_STATE_STATUS_SHIFT);
  94 }
  95
  96 GLuint
  97 nouveau_notifier_status(GLcontext *ctx,
  98                         struct drm_nouveau_notifierobj_alloc *notifier,
  99                         GLuint id)
 100 {
 101         NOTIFIER(n);
 102
 103         return n[NV_NOTIFY_STATE/4] >> NV_NOTIFY_STATE_STATUS_SHIFT;
 104 }
 105
 106 GLuint
 107 nouveau_notifier_return_val(GLcontext *ctx,
 108                             struct drm_nouveau_notifierobj_alloc *notifier,
 109                             GLuint id)
 110 {
 111         NOTIFIER(n);
 112
 113         return n[NV_NOTIFY_RETURN_VALUE/4];
 114 }
 115
 116 GLboolean
 117 nouveau_notifier_wait_status(GLcontext *ctx,
 118                              struct drm_nouveau_notifierobj_alloc *notifier,
 119                              GLuint id, GLuint status, GLuint timeout)
 120 {
 121         NOTIFIER(n);
 122         unsigned int time = 0;
 123
 124 #ifdef NOUVEAU_RING_DEBUG
 125         return GL_TRUE;
 126 #endif
 127
 128         while (time <= timeout) {
 129                 if (n[NV_NOTIFY_STATE/4] & NV_NOTIFY_STATE_ERROR_CODE_MASK) {
 130                         MESSAGE("Notifier returned error: 0x%04x\n",
 131                                         n[NV_NOTIFY_STATE/4] &
 132                                         NV_NOTIFY_STATE_ERROR_CODE_MASK);
 133                         return GL_FALSE;
 134                 }
 135
 136                 if (((n[NV_NOTIFY_STATE/4] & NV_NOTIFY_STATE_STATUS_MASK) >>
 137                                 NV_NOTIFY_STATE_STATUS_SHIFT) == status)
 138                         return GL_TRUE;
 139
 140                 if (timeout) {
 141                         DO_USLEEP(1);
 142                         time++;
 143                 }
 144         }
 145
 146         MESSAGE("Notifier timed out\n");
 147         return GL_FALSE;
 148 }
 149
 150 void
 151 nouveau_notifier_wait_nop(GLcontext *ctx,
 152                           struct drm_nouveau_notifierobj_alloc *notifier,
 153                           GLuint subc)
 154 {
 155         NOTIFIER(n);
 156         GLboolean ret;
 157
 158         nouveau_notifier_reset(ctx, notifier, 0);
 159
 160         BEGIN_RING_SIZE(subc, NV_NOTIFY, 1);
 161         OUT_RING       (NV_NOTIFY_STYLE_WRITE_ONLY);
 162         BEGIN_RING_SIZE(subc, NV_NOP, 1);
 163         OUT_RING       (0);
 164         FIRE_RING();
 165
 166         ret = nouveau_notifier_wait_status(ctx, notifier, 0,
 167                                            NV_NOTIFY_STATE_STATUS_COMPLETED,
 168                                            0 /* no timeout */);
 169         if (ret == GL_FALSE) MESSAGE("wait on notifier failed\n");
 170 }
 171
 172 GLboolean nouveauSyncInitFuncs(GLcontext *ctx)
 173 {
 174         nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
 175
 176 #ifdef NOUVEAU_RING_DEBUG
 177         return GL_TRUE;
 178 #endif
 179
 180         nmesa->syncNotifier = nouveau_notifier_new(ctx, NvSyncNotify, 1);
 181         if (!nmesa->syncNotifier) {
 182                 MESSAGE("Failed to create channel sync notifier\n");
 183                 return GL_FALSE;
 184         }
 185
 186         /* 0x180 is SET_DMA_NOTIFY, should be correct for all supported 3D
 187          * object classes
 188          */
 189         BEGIN_RING_CACHE(NvSub3D, 0x180, 1);
 190         OUT_RING_CACHE  (NvSyncNotify);
 191         BEGIN_RING_SIZE(NvSubMemFormat,
 192                         NV_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY, 1);
 193         OUT_RING       (NvSyncNotify);
 194
 195         return GL_TRUE;
 196 }
 197