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      1 /****************************************************************************
      2  * Copyright (C) 2016 Intel Corporation.   All Rights Reserved.
      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 DEALINGS
     21  * IN THE SOFTWARE.
     22  ***************************************************************************/
     23 
     24 #include "swr_context.h"
     25 #include "swr_fence.h"
     26 
     27 #include "util/u_inlines.h"
     28 #include "util/u_memory.h"
     29 
     30 /*
     31  * Called by swr_fence_cb to complete the work queue
     32  */
     33 void
     34 swr_fence_do_work(struct swr_fence *fence)
     35 {
     36    struct swr_fence_work *work, *tmp;
     37 
     38    if (fence->work.head.next) {
     39       work = fence->work.head.next;
     40       /* Immediately clear the head so any new work gets added to a new work
     41        * queue */
     42       p_atomic_set(&fence->work.head.next, 0);
     43       p_atomic_set(&fence->work.tail, &fence->work.head);
     44       p_atomic_set(&fence->work.count, 0);
     45 
     46       do {
     47          tmp = work->next;
     48          work->callback(work);
     49          FREE(work);
     50          work = tmp;
     51       } while(work);
     52    }
     53 }
     54 
     55 
     56 /*
     57  * Called by one of the specialized work routines below
     58  */
     59 static inline void
     60 swr_add_fence_work(struct pipe_fence_handle *fh,
     61                    struct swr_fence_work *work)
     62 {
     63    /* If no fence, just do the work now */
     64    if (!fh) {
     65       work->callback(work);
     66       FREE(work);
     67       return;
     68    }
     69 
     70    struct swr_fence *fence  = swr_fence(fh);
     71    p_atomic_set(&fence->work.tail->next, work);
     72    p_atomic_set(&fence->work.tail, work);
     73    p_atomic_inc(&fence->work.count);
     74 }
     75 
     76 
     77 /*
     78  * Generic free/free_aligned, and delete vs/fs
     79  */
     80 template<bool aligned_free>
     81 static void
     82 swr_free_cb(struct swr_fence_work *work)
     83 {
     84    if (aligned_free)
     85       AlignedFree(work->free.data);
     86    else
     87       FREE(work->free.data);
     88 }
     89 
     90 static void
     91 swr_delete_vs_cb(struct swr_fence_work *work)
     92 {
     93    delete work->free.swr_vs;
     94 }
     95 
     96 static void
     97 swr_delete_fs_cb(struct swr_fence_work *work)
     98 {
     99    delete work->free.swr_fs;
    100 }
    101 
    102 bool
    103 swr_fence_work_free(struct pipe_fence_handle *fence, void *data,
    104                     bool aligned_free)
    105 {
    106    struct swr_fence_work *work = CALLOC_STRUCT(swr_fence_work);
    107    if (!work)
    108       return false;
    109    if (aligned_free)
    110       work->callback = swr_free_cb<true>;
    111    else
    112       work->callback = swr_free_cb<false>;
    113    work->free.data = data;
    114 
    115    swr_add_fence_work(fence, work);
    116 
    117    return true;
    118 }
    119 
    120 bool
    121 swr_fence_work_delete_vs(struct pipe_fence_handle *fence,
    122                          struct swr_vertex_shader *swr_vs)
    123 {
    124    struct swr_fence_work *work = CALLOC_STRUCT(swr_fence_work);
    125    if (!work)
    126       return false;
    127    work->callback = swr_delete_vs_cb;
    128    work->free.swr_vs = swr_vs;
    129 
    130    swr_add_fence_work(fence, work);
    131 
    132    return true;
    133 }
    134 
    135 bool
    136 swr_fence_work_delete_fs(struct pipe_fence_handle *fence,
    137                          struct swr_fragment_shader *swr_fs)
    138 {
    139    struct swr_fence_work *work = CALLOC_STRUCT(swr_fence_work);
    140    if (!work)
    141       return false;
    142    work->callback = swr_delete_fs_cb;
    143    work->free.swr_fs = swr_fs;
    144 
    145    swr_add_fence_work(fence, work);
    146 
    147    return true;
    148 }
    149