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/*

 * Copyright 2012 Red Hat Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR

 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 *

 * Authors: Ben Skeggs

 *

 */

#include "nouveau/nv_object.xml.h"

#include "nv30-40_3d.xml.h"

#include "nv30_screen.h"

#include "nv30_context.h"

#define LIST_FIRST_ENTRY(__type, __item, __field) \

   LIST_ENTRY(__type, (__item)->next, __field)

struct nv30_query_object {

   struct list_head list;

   struct nouveau_heap *hw;

};

static volatile void *

nv30_ntfy(struct nv30_screen *screen, struct nv30_query_object *qo)

{

   struct nv04_notify *query = screen->query->data;

   struct nouveau_bo *notify = screen->notify;

   volatile void *ntfy = NULL;

   if (qo && qo->hw)

      ntfy = (char *)notify->map + query->offset + qo->hw->start;

   return ntfy;

}

static void

nv30_query_object_del(struct nv30_screen *screen, struct nv30_query_object **po)

{

   struct nv30_query_object *qo = *po; *po = NULL;

   if (qo) {

      volatile uint32_t *ntfy = nv30_ntfy(screen, qo);

      while (ntfy[3] & 0xff000000) {

      }

      nouveau_heap_free(&qo->hw);

      LIST_DEL(&qo->list);

      FREE(qo);

   }

}

static struct nv30_query_object *

nv30_query_object_new(struct nv30_screen *screen)

{

   struct nv30_query_object *oq, *qo = CALLOC_STRUCT(nv30_query_object);

   volatile uint32_t *ntfy;

   if (!qo)

      return NULL;

   /* allocate a new hw query object, if no hw objects left we need to

    * spin waiting for one to become free

    */

   while (nouveau_heap_alloc(screen->query_heap, 32, NULL, &qo->hw)) {

      oq = LIST_FIRST_ENTRY(struct nv30_query_object, &screen->queries, list);

      nv30_query_object_del(screen, &oq);

   }

   LIST_ADDTAIL(&qo->list, &screen->queries);

   ntfy = nv30_ntfy(screen, qo);

   ntfy[0] = 0x00000000;

   ntfy[1] = 0x00000000;

   ntfy[2] = 0x00000000;

   ntfy[3] = 0x01000000;

   return qo;

}

struct nv30_query {

   struct nv30_query_object *qo[2];

   unsigned type;

   uint32_t report;

   uint32_t enable;

   uint64_t result;

};

static INLINE struct nv30_query *

nv30_query(struct pipe_query *pipe)

{

   return (struct nv30_query *)pipe;

}

static struct pipe_query *

nv30_query_create(struct pipe_context *pipe, unsigned type)

{

   struct nv30_query *q = CALLOC_STRUCT(nv30_query);

   if (!q)

      return NULL;

   q->type = type;

   switch (q->type) {

   case PIPE_QUERY_TIMESTAMP:

   case PIPE_QUERY_TIME_ELAPSED:

      q->enable = 0x0000;

      q->report = 1;

      break;

   case PIPE_QUERY_OCCLUSION_COUNTER:

      q->enable = NV30_3D_QUERY_ENABLE;

      q->report = 1;

      break;

   case NV30_QUERY_ZCULL_0:

   case NV30_QUERY_ZCULL_1:

   case NV30_QUERY_ZCULL_2:

   case NV30_QUERY_ZCULL_3:

      q->enable = 0x1804;

      q->report = 2 + (q->type - NV30_QUERY_ZCULL_0);

      break;

   default:

      FREE(q);

      return NULL;

   }

   return (struct pipe_query *)q;

}

static void

nv30_query_destroy(struct pipe_context *pipe, struct pipe_query *pq)

{

   FREE(pq);

}

static void

nv30_query_begin(struct pipe_context *pipe, struct pipe_query *pq)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_query *q = nv30_query(pq);

   struct nouveau_pushbuf *push = nv30->base.pushbuf;

   switch (q->type) {

   case PIPE_QUERY_TIME_ELAPSED:

      q->qo[0] = nv30_query_object_new(nv30->screen);

      if (q->qo[0]) {

         BEGIN_NV04(push, NV30_3D(QUERY_GET), 1);

         PUSH_DATA (push, (q->report << 24) | q->qo[0]->hw->start);

      }

      break;

   case PIPE_QUERY_TIMESTAMP:

      return;

   default:

      BEGIN_NV04(push, NV30_3D(QUERY_RESET), 1);

      PUSH_DATA (push, q->report);

      break;

   }

   if (q->enable) {

      BEGIN_NV04(push, SUBC_3D(q->enable), 1);

      PUSH_DATA (push, 1);

   }

}

static void

nv30_query_end(struct pipe_context *pipe, struct pipe_query *pq)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_screen *screen = nv30->screen;

   struct nv30_query *q = nv30_query(pq);

   struct nouveau_pushbuf *push = nv30->base.pushbuf;

   q->qo[1] = nv30_query_object_new(screen);

   if (q->qo[1]) {

      BEGIN_NV04(push, NV30_3D(QUERY_GET), 1);

      PUSH_DATA (push, (q->report << 24) | q->qo[1]->hw->start);

   }

   if (q->enable) {

      BEGIN_NV04(push, SUBC_3D(q->enable), 1);

      PUSH_DATA (push, 0);

   }

   PUSH_KICK (push);

}

static boolean

nv30_query_result(struct pipe_context *pipe, struct pipe_query *pq,

                  boolean wait, union pipe_query_result *result)

{

   struct nv30_screen *screen = nv30_screen(pipe->screen);

   struct nv30_query *q = nv30_query(pq);

   volatile uint32_t *ntfy0 = nv30_ntfy(screen, q->qo[0]);

   volatile uint32_t *ntfy1 = nv30_ntfy(screen, q->qo[1]);

   uint64_t *res64 = &result->u64;

   if (ntfy1) {

      while (ntfy1[3] & 0xff000000) {

         if (!wait)

            return FALSE;

      }

      switch (q->type) {

      case PIPE_QUERY_TIMESTAMP:

         q->result = *(uint64_t *)&ntfy1[0];

         break;

      case PIPE_QUERY_TIME_ELAPSED:

         q->result = *(uint64_t *)&ntfy1[0] - *(uint64_t *)&ntfy0[0];

         break;

      default:

         q->result = ntfy1[2];

         break;

      }

      nv30_query_object_del(screen, &q->qo[0]);

      nv30_query_object_del(screen, &q->qo[1]);

   }

   *res64 = q->result;

   return TRUE;

}

static void

nv40_query_render_condition(struct pipe_context *pipe,

                            struct pipe_query *pq,

                            boolean condition, uint mode)

{

   struct nv30_context *nv30 = nv30_context(pipe);

   struct nv30_query *q = nv30_query(pq);

   struct nouveau_pushbuf *push = nv30->base.pushbuf;

   nv30->render_cond_query = pq;

   nv30->render_cond_mode = mode;

   nv30->render_cond_cond = condition;

   if (!pq) {

      BEGIN_NV04(push, SUBC_3D(0x1e98), 1);

      PUSH_DATA (push, 0x01000000);

      return;

   }

   if (mode == PIPE_RENDER_COND_WAIT ||

       mode == PIPE_RENDER_COND_BY_REGION_WAIT) {

      BEGIN_NV04(push, SUBC_3D(0x0110), 1);

      PUSH_DATA (push, 0);

   }

   BEGIN_NV04(push, SUBC_3D(0x1e98), 1);

   PUSH_DATA (push, 0x02000000 | q->qo[1]->hw->start);

}

void

nv30_query_init(struct pipe_context *pipe)

{

   struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;

   pipe->create_query = nv30_query_create;

   pipe->destroy_query = nv30_query_destroy;

   pipe->begin_query = nv30_query_begin;

   pipe->end_query = nv30_query_end;

   pipe->get_query_result = nv30_query_result;

   if (eng3d->oclass >= NV40_3D_CLASS)

      pipe->render_condition = nv40_query_render_condition;

}