src/gallium/drivers/nv50/nv50_query.c

   1 /*
   2  * Copyright 2008 Ben Skeggs
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include "pipe/p_context.h"
  24 #include "pipe/p_inlines.h"
  25
  26 #include "nv50_context.h"
  27
  28 struct nv50_query {
  29         struct nouveau_bo *bo;
  30         unsigned type;
  31         boolean ready;
  32         uint64_t result;
  33 };
  34
  35 static INLINE struct nv50_query *
  36 nv50_query(struct pipe_query *pipe)
  37 {
  38         return (struct nv50_query *)pipe;
  39 }
  40
  41 static struct pipe_query *
  42 nv50_query_create(struct pipe_context *pipe, unsigned type)
  43 {
  44         struct nouveau_device *dev = nouveau_screen(pipe->screen)->device;
  45         struct nv50_query *q = CALLOC_STRUCT(nv50_query);
  46         int ret;
  47
  48         assert (q->type == PIPE_QUERY_OCCLUSION_COUNTER);
  49         q->type = type;
  50
  51         ret = nouveau_bo_new(dev, NOUVEAU_BO_VRAM | NOUVEAU_BO_MAP, 256,
  52                              16, &q->bo);
  53         if (ret) {
  54                 FREE(q);
  55                 return NULL;
  56         }
  57
  58         return (struct pipe_query *)q;
  59 }
  60
  61 static void
  62 nv50_query_destroy(struct pipe_context *pipe, struct pipe_query *pq)
  63 {
  64         struct nv50_query *q = nv50_query(pq);
  65
  66         if (q) {
  67                 nouveau_bo_ref(NULL, &q->bo);
  68                 FREE(q);
  69         }
  70 }
  71
  72 static void
  73 nv50_query_begin(struct pipe_context *pipe, struct pipe_query *pq)
  74 {
  75         struct nv50_context *nv50 = nv50_context(pipe);
  76         struct nouveau_channel *chan = nv50->screen->base.channel;
  77         struct nouveau_grobj *tesla = nv50->screen->tesla;
  78         struct nv50_query *q = nv50_query(pq);
  79
  80         BEGIN_RING(chan, tesla, 0x1530, 1);
  81         OUT_RING  (chan, 1);
  82         BEGIN_RING(chan, tesla, 0x1514, 1);
  83         OUT_RING  (chan, 1);
  84
  85         q->ready = FALSE;
  86 }
  87
  88 static void
  89 nv50_query_end(struct pipe_context *pipe, struct pipe_query *pq)
  90 {
  91         struct nv50_context *nv50 = nv50_context(pipe);
  92         struct nouveau_channel *chan = nv50->screen->base.channel;
  93         struct nouveau_grobj *tesla = nv50->screen->tesla;
  94         struct nv50_query *q = nv50_query(pq);
  95
  96         WAIT_RING (chan, 5);
  97         BEGIN_RING(chan, tesla, NV50TCL_QUERY_ADDRESS_HIGH, 4);
  98         OUT_RELOCh(chan, q->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
  99         OUT_RELOCl(chan, q->bo, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
 100         OUT_RING  (chan, 0x00000000);
 101         OUT_RING  (chan, 0x0100f002);
 102         FIRE_RING (chan);
 103 }
 104
 105 static boolean
 106 nv50_query_result(struct pipe_context *pipe, struct pipe_query *pq,
 107                   boolean wait, uint64_t *result)
 108 {
 109         struct nv50_query *q = nv50_query(pq);
 110         int ret;
 111
 112         if (!q->ready) {
 113                 ret = nouveau_bo_map(q->bo, NOUVEAU_BO_RD |
 114                                      wait ? 0 : NOUVEAU_BO_NOWAIT);
 115                 if (ret)
 116                         return false;
 117                 q->result = ((uint32_t *)q->bo->map)[1];
 118                 q->ready = TRUE;
 119                 nouveau_bo_unmap(q->bo);
 120         }
 121
 122         *result = q->result;
 123         return q->ready;
 124 }
 125
 126 void
 127 nv50_init_query_functions(struct nv50_context *nv50)
 128 {
 129         nv50->pipe.create_query = nv50_query_create;
 130         nv50->pipe.destroy_query = nv50_query_destroy;
 131         nv50->pipe.begin_query = nv50_query_begin;
 132         nv50->pipe.end_query = nv50_query_end;
 133         nv50->pipe.get_query_result = nv50_query_result;
 134 }