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 "util/u_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_GART | 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, NV50TCL_SAMPLECNT_RESET, 1);
  81         OUT_RING  (chan, 1);
  82         BEGIN_RING(chan, tesla, NV50TCL_SAMPLECNT_ENABLE, 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         MARK_RING (chan, 5, 2); /* flush on lack of space or relocs */
  97         BEGIN_RING(chan, tesla, NV50TCL_QUERY_ADDRESS_HIGH, 4);
  98         OUT_RELOCh(chan, q->bo, 0, NOUVEAU_BO_GART | NOUVEAU_BO_WR);
  99         OUT_RELOCl(chan, q->bo, 0, NOUVEAU_BO_GART | NOUVEAU_BO_WR);
 100         OUT_RING  (chan, 0x00000000);
 101         OUT_RING  (chan, 0x0100f002);
 102
 103         BEGIN_RING(chan, tesla, NV50TCL_SAMPLECNT_ENABLE, 1);
 104         OUT_RING  (chan, 0);
 105 }
 106
 107 static boolean
 108 nv50_query_result(struct pipe_context *pipe, struct pipe_query *pq,
 109                   boolean wait, uint64_t *result)
 110 {
 111         struct nv50_query *q = nv50_query(pq);
 112         int ret;
 113
 114         if (!q->ready) {
 115                 ret = nouveau_bo_map(q->bo, NOUVEAU_BO_RD |
 116                                      (wait ? 0 : NOUVEAU_BO_NOWAIT));
 117                 if (ret)
 118                         return false;
 119                 q->result = ((uint32_t *)q->bo->map)[1];
 120                 q->ready = TRUE;
 121                 nouveau_bo_unmap(q->bo);
 122         }
 123
 124         *result = q->result;
 125         return q->ready;
 126 }
 127
 128 static void
 129 nv50_render_condition(struct pipe_context *pipe,
 130                       struct pipe_query *pq, uint mode)
 131 {
 132         struct nv50_context *nv50 = nv50_context(pipe);
 133         struct nouveau_channel *chan = nv50->screen->base.channel;
 134         struct nouveau_grobj *tesla = nv50->screen->tesla;
 135         struct nv50_query *q;
 136
 137         if (!pq) {
 138                 BEGIN_RING(chan, tesla, NV50TCL_COND_MODE, 1);
 139                 OUT_RING  (chan, NV50TCL_COND_MODE_ALWAYS);
 140                 return;
 141         }
 142         q = nv50_query(pq);
 143
 144         if (mode == PIPE_RENDER_COND_WAIT ||
 145             mode == PIPE_RENDER_COND_BY_REGION_WAIT) {
 146                 /* XXX: big fence, FIFO semaphore might be better */
 147                 BEGIN_RING(chan, tesla, 0x0110, 1);
 148                 OUT_RING  (chan, 0);
 149         }
 150
 151         BEGIN_RING(chan, tesla, NV50TCL_COND_ADDRESS_HIGH, 3);
 152         OUT_RELOCh(chan, q->bo, 0, NOUVEAU_BO_GART | NOUVEAU_BO_RD);
 153         OUT_RELOCl(chan, q->bo, 0, NOUVEAU_BO_GART | NOUVEAU_BO_RD);
 154         OUT_RING  (chan, NV50TCL_COND_MODE_RES);
 155 }
 156
 157 void
 158 nv50_init_query_functions(struct nv50_context *nv50)
 159 {
 160         nv50->pipe.create_query = nv50_query_create;
 161         nv50->pipe.destroy_query = nv50_query_destroy;
 162         nv50->pipe.begin_query = nv50_query_begin;
 163         nv50->pipe.end_query = nv50_query_end;
 164         nv50->pipe.get_query_result = nv50_query_result;
 165         nv50->pipe.render_condition = nv50_render_condition;
 166 }