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      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 
    145