src/gallium/winsys/svga/drm/vmw_query.c

   1 /**********************************************************
   2  * Copyright 2015 VMware, Inc.  All rights reserved.
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  **********************************************************/
  25
  26 #include "pipebuffer/pb_bufmgr.h"
  27 #include "util/u_memory.h"
  28
  29 #include "vmw_screen.h"
  30 #include "vmw_buffer.h"
  31 #include "vmw_query.h"
  32
  33
  34
  35 struct svga_winsys_gb_query *
  36 vmw_svga_winsys_query_create(struct svga_winsys_screen *sws,
  37                              uint32 queryResultLen)
  38 {
  39    struct vmw_winsys_screen *vws = vmw_winsys_screen(sws);
  40    struct pb_manager *provider = vws->pools.gmr;
  41    struct pb_desc desc = {0};
  42    struct pb_buffer *pb_buf;
  43    struct svga_winsys_gb_query *query;
  44
  45    query = CALLOC_STRUCT(svga_winsys_gb_query);
  46    if (!query)
  47       return NULL;
  48
  49    /* Allocate memory to hold queries for this context */
  50    desc.alignment = 4096;
  51    pb_buf = provider->create_buffer(provider, queryResultLen, &desc);
  52    query->buf = vmw_svga_winsys_buffer_wrap(pb_buf);
  53
  54    if (!query->buf) {
  55       debug_printf("Failed to allocate memory for queries\n");
  56       FREE(query);
  57       query = NULL;
  58    }
  59
  60    return query;
  61 }
  62
  63
  64
  65 void
  66 vmw_svga_winsys_query_destroy(struct svga_winsys_screen *sws,
  67                               struct svga_winsys_gb_query *query)
  68 {
  69    vmw_svga_winsys_buffer_destroy(sws, query->buf);
  70    FREE(query);
  71 }
  72
  73
  74
  75 int
  76 vmw_svga_winsys_query_init(struct svga_winsys_screen *sws,
  77                            struct svga_winsys_gb_query *query,
  78                            unsigned offset,
  79                            SVGA3dQueryState queryState)
  80 {
  81    SVGA3dQueryState *state;
  82
  83    state = (SVGA3dQueryState *) vmw_svga_winsys_buffer_map(sws,
  84                                        query->buf,
  85                                        PIPE_TRANSFER_WRITE);
  86    if (!state) {
  87       debug_printf("Failed to map query result memory for initialization\n");
  88       return -1;
  89    }
  90
  91    /* Initialize the query state for the specified query slot */
  92    state = (SVGA3dQueryState *)((char *)state + offset);
  93    *state = queryState;
  94
  95    vmw_svga_winsys_buffer_unmap(sws, query->buf);
  96
  97    return 0;
  98 }
  99
 100
 101
 102 void
 103 vmw_svga_winsys_query_get_result(struct svga_winsys_screen *sws,
 104                                  struct svga_winsys_gb_query *query,
 105                                  unsigned offset,
 106                                  SVGA3dQueryState *queryState,
 107                                  void *result, uint32 resultLen)
 108 {
 109    SVGA3dQueryState *state;
 110
 111    state = (SVGA3dQueryState *) vmw_svga_winsys_buffer_map(sws,
 112                                        query->buf,
 113                                        PIPE_TRANSFER_READ);
 114    if (!state) {
 115       debug_printf("Failed to lock query result memory\n");
 116
 117       if (queryState)
 118          *queryState = SVGA3D_QUERYSTATE_FAILED;
 119
 120       return;
 121    }
 122
 123    state = (SVGA3dQueryState *)((char *)state + offset);
 124
 125    if (queryState)
 126       *queryState = *state;
 127
 128    if (result) {
 129       memcpy(result, state + 1, resultLen);
 130    }
 131
 132    vmw_svga_winsys_buffer_unmap(sws, query->buf);
 133 }
 134
 135
 136 enum pipe_error
 137 vmw_swc_query_bind(struct svga_winsys_context *swc,
 138                    struct svga_winsys_gb_query *query,
 139                    unsigned flags)
 140 {
 141    /* no-op on Linux */
 142    return PIPE_OK;
 143 }
 144