| 1 | /* |
| 2 | * Copyright © 2010 NVIDIA Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | |
| 24 | #ifdef HAVE_DIX_CONFIG_H |
| 25 | #include <dix-config.h> |
| 26 | #endif |
| 27 | |
| 28 | #include "scrnintstr.h" |
| 29 | #include "misync.h" |
| 30 | #include "misyncstr.h" |
| 31 | |
| 32 | DevPrivateKeyRec miSyncScreenPrivateKey; |
| 33 | |
| 34 | /* Default implementations of the sync screen functions */ |
| 35 | void |
| 36 | miSyncScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence, |
| 37 | Bool initially_triggered) |
| 38 | { |
| 39 | (void) pScreen; |
| 40 | |
| 41 | pFence->triggered = initially_triggered; |
| 42 | } |
| 43 | |
| 44 | void |
| 45 | miSyncScreenDestroyFence(ScreenPtr pScreen, SyncFence * pFence) |
| 46 | { |
| 47 | (void) pScreen; |
| 48 | (void) pFence; |
| 49 | } |
| 50 | |
| 51 | /* Default implementations of the per-object functions */ |
| 52 | void |
| 53 | miSyncFenceSetTriggered(SyncFence * pFence) |
| 54 | { |
| 55 | pFence->triggered = TRUE; |
| 56 | } |
| 57 | |
| 58 | void |
| 59 | miSyncFenceReset(SyncFence * pFence) |
| 60 | { |
| 61 | pFence->triggered = FALSE; |
| 62 | } |
| 63 | |
| 64 | Bool |
| 65 | miSyncFenceCheckTriggered(SyncFence * pFence) |
| 66 | { |
| 67 | return pFence->triggered; |
| 68 | } |
| 69 | |
| 70 | void |
| 71 | miSyncFenceAddTrigger(SyncTrigger * pTrigger) |
| 72 | { |
| 73 | (void) pTrigger; |
| 74 | |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | void |
| 79 | miSyncFenceDeleteTrigger(SyncTrigger * pTrigger) |
| 80 | { |
| 81 | (void) pTrigger; |
| 82 | |
| 83 | return; |
| 84 | } |
| 85 | |
| 86 | /* Machine independent portion of the fence sync object implementation */ |
| 87 | void |
| 88 | miSyncInitFence(ScreenPtr pScreen, SyncFence * pFence, Bool initially_triggered) |
| 89 | { |
| 90 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); |
| 91 | |
| 92 | static const SyncFenceFuncsRec miSyncFenceFuncs = { |
| 93 | &miSyncFenceSetTriggered, |
| 94 | &miSyncFenceReset, |
| 95 | &miSyncFenceCheckTriggered, |
| 96 | &miSyncFenceAddTrigger, |
| 97 | &miSyncFenceDeleteTrigger |
| 98 | }; |
| 99 | |
| 100 | pFence->pScreen = pScreen; |
| 101 | pFence->funcs = miSyncFenceFuncs; |
| 102 | |
| 103 | pScreenPriv->funcs.CreateFence(pScreen, pFence, initially_triggered); |
| 104 | } |
| 105 | |
| 106 | void |
| 107 | miSyncDestroyFence(SyncFence * pFence) |
| 108 | { |
| 109 | ScreenPtr pScreen = pFence->pScreen; |
| 110 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); |
| 111 | SyncTriggerList *ptl, *pNext; |
| 112 | |
| 113 | pFence->sync.beingDestroyed = TRUE; |
| 114 | /* tell all the fence's triggers that the counter has been destroyed */ |
| 115 | for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) { |
| 116 | (*ptl->pTrigger->CounterDestroyed) (ptl->pTrigger); |
| 117 | pNext = ptl->next; |
| 118 | free(ptl); /* destroy the trigger list as we go */ |
| 119 | } |
| 120 | |
| 121 | pScreenPriv->funcs.DestroyFence(pScreen, pFence); |
| 122 | |
| 123 | dixFreeObjectWithPrivates(pFence, PRIVATE_SYNC_FENCE); |
| 124 | } |
| 125 | |
| 126 | void |
| 127 | miSyncTriggerFence(SyncFence * pFence) |
| 128 | { |
| 129 | SyncTriggerList *ptl, *pNext; |
| 130 | CARD64 unused; |
| 131 | |
| 132 | pFence->funcs.SetTriggered(pFence); |
| 133 | |
| 134 | XSyncIntToValue(&unused, 0L); |
| 135 | |
| 136 | /* run through triggers to see if any fired */ |
| 137 | for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) { |
| 138 | pNext = ptl->next; |
| 139 | if ((*ptl->pTrigger->CheckTrigger) (ptl->pTrigger, unused)) |
| 140 | (*ptl->pTrigger->TriggerFired) (ptl->pTrigger); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | SyncScreenFuncsPtr |
| 145 | miSyncGetScreenFuncs(ScreenPtr pScreen) |
| 146 | { |
| 147 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); |
| 148 | |
| 149 | return &pScreenPriv->funcs; |
| 150 | } |
| 151 | |
| 152 | static Bool |
| 153 | SyncCloseScreen(ScreenPtr pScreen) |
| 154 | { |
| 155 | SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen); |
| 156 | |
| 157 | pScreen->CloseScreen = pScreenPriv->CloseScreen; |
| 158 | |
| 159 | return (*pScreen->CloseScreen) (pScreen); |
| 160 | } |
| 161 | |
| 162 | Bool |
| 163 | miSyncSetup(ScreenPtr pScreen) |
| 164 | { |
| 165 | SyncScreenPrivPtr pScreenPriv; |
| 166 | |
| 167 | static const SyncScreenFuncsRec miSyncScreenFuncs = { |
| 168 | &miSyncScreenCreateFence, |
| 169 | &miSyncScreenDestroyFence |
| 170 | }; |
| 171 | |
| 172 | if (!dixPrivateKeyRegistered(&miSyncScreenPrivateKey)) { |
| 173 | if (!dixRegisterPrivateKey(&miSyncScreenPrivateKey, PRIVATE_SCREEN, |
| 174 | sizeof(SyncScreenPrivRec))) |
| 175 | return FALSE; |
| 176 | } |
| 177 | |
| 178 | pScreenPriv = SYNC_SCREEN_PRIV(pScreen); |
| 179 | |
| 180 | if (!pScreenPriv->funcs.CreateFence) { |
| 181 | pScreenPriv->funcs = miSyncScreenFuncs; |
| 182 | |
| 183 | /* Wrap CloseScreen to clean up */ |
| 184 | pScreenPriv->CloseScreen = pScreen->CloseScreen; |
| 185 | pScreen->CloseScreen = SyncCloseScreen; |
| 186 | } |
| 187 | |
| 188 | return TRUE; |
| 189 | } |