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/*

 * Copyright 2011 Nouveau Project

 *

 * 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: Christoph Bumiller

 */

#define NV50_PUSH_EXPLICIT_SPACE_CHECKING

#include "nv50_context.h"

#include "nouveau/nv_object.xml.h"

/* XXX: Nested queries, and simultaneous queries on multiple gallium contexts

 * (since we use only a single GPU channel per screen) will not work properly.

 *

 * The first is not that big of an issue because OpenGL does not allow nested

 * queries anyway.

 */

struct nv50_query {

   uint32_t *data;

   uint16_t type;

   uint16_t index;

   uint32_t sequence;

   struct nouveau_bo *bo;

   uint32_t base;

   uint32_t offset; /* base + i * 16 */

   boolean ready;

   boolean flushed;

   boolean is64bit;

   struct nouveau_mm_allocation *mm;

};

#define NV50_QUERY_ALLOC_SPACE 128

static INLINE struct nv50_query *

nv50_query(struct pipe_query *pipe)

{

   return (struct nv50_query *)pipe;

}

static boolean

nv50_query_allocate(struct nv50_context *nv50, struct nv50_query *q, int size)

{

   struct nv50_screen *screen = nv50->screen;

   int ret;

   if (q->bo) {

      nouveau_bo_ref(NULL, &q->bo);

      if (q->mm) {

         if (q->ready)

            nouveau_mm_free(q->mm);

         else

            nouveau_fence_work(screen->base.fence.current, nouveau_mm_free_work,

                               q->mm);

      }

   }

   if (size) {

      q->mm = nouveau_mm_allocate(screen->base.mm_GART, size, &q->bo, &q->base);

      if (!q->bo)

         return FALSE;

      q->offset = q->base;

      ret = nouveau_bo_map(q->bo, 0, screen->base.client);

      if (ret) {

         nv50_query_allocate(nv50, q, 0);

         return FALSE;

      }

      q->data = (uint32_t *)((uint8_t *)q->bo->map + q->base);

   }

   return TRUE;

}

static void

nv50_query_destroy(struct pipe_context *pipe, struct pipe_query *pq)

{

   nv50_query_allocate(nv50_context(pipe), nv50_query(pq), 0);

   FREE(nv50_query(pq));

}

static struct pipe_query *

nv50_query_create(struct pipe_context *pipe, unsigned type)

{

   struct nv50_context *nv50 = nv50_context(pipe);

   struct nv50_query *q;

   q = CALLOC_STRUCT(nv50_query);

   if (!q)

      return NULL;

   if (!nv50_query_allocate(nv50, q, NV50_QUERY_ALLOC_SPACE)) {

      FREE(q);

      return NULL;

   }

   q->is64bit = (type == PIPE_QUERY_PRIMITIVES_GENERATED ||

                 type == PIPE_QUERY_PRIMITIVES_EMITTED ||

                 type == PIPE_QUERY_SO_STATISTICS);

   q->type = type;

   if (q->type == PIPE_QUERY_OCCLUSION_COUNTER) {

      q->offset -= 16;

      q->data -= 16 / sizeof(*q->data); /* we advance before query_begin ! */

   }

   return (struct pipe_query *)q;

}

static void

nv50_query_get(struct nouveau_pushbuf *push, struct nv50_query *q,

               unsigned offset, uint32_t get)

{

   offset += q->offset;

   PUSH_SPACE(push, 5);

   PUSH_REFN (push, q->bo, NOUVEAU_BO_GART | NOUVEAU_BO_WR);

   BEGIN_NV04(push, NV50_3D(QUERY_ADDRESS_HIGH), 4);

   PUSH_DATAh(push, q->bo->offset + offset);

   PUSH_DATA (push, q->bo->offset + offset);

   PUSH_DATA (push, q->sequence);

   PUSH_DATA (push, get);

}

static void

nv50_query_begin(struct pipe_context *pipe, struct pipe_query *pq)

{

   struct nv50_context *nv50 = nv50_context(pipe);

   struct nouveau_pushbuf *push = nv50->base.pushbuf;

   struct nv50_query *q = nv50_query(pq);

   /* For occlusion queries we have to change the storage, because a previous

    * query might set the initial render conition to FALSE even *after* we re-

    * initialized it to TRUE.

    */

   if (q->type == PIPE_QUERY_OCCLUSION_COUNTER) {

      q->offset += 16;

      q->data += 16 / sizeof(*q->data);

      if (q->offset - q->base == NV50_QUERY_ALLOC_SPACE)

         nv50_query_allocate(nv50, q, NV50_QUERY_ALLOC_SPACE);

      /* XXX: can we do this with the GPU, and sync with respect to a previous

       *  query ?

       */

      q->data[1] = 1; /* initial render condition = TRUE */

   }

   if (!q->is64bit)

      q->data[0] = q->sequence++; /* the previously used one */

   switch (q->type) {

   case PIPE_QUERY_OCCLUSION_COUNTER:

      PUSH_SPACE(push, 4);

      BEGIN_NV04(push, NV50_3D(COUNTER_RESET), 1);

      PUSH_DATA (push, NV50_3D_COUNTER_RESET_SAMPLECNT);

      BEGIN_NV04(push, NV50_3D(SAMPLECNT_ENABLE), 1);

      PUSH_DATA (push, 1);

      break;

   case PIPE_QUERY_PRIMITIVES_GENERATED:

      nv50_query_get(push, q, 0x10, 0x06805002);

      break;

   case PIPE_QUERY_PRIMITIVES_EMITTED:

      nv50_query_get(push, q, 0x10, 0x05805002);

      break;

   case PIPE_QUERY_SO_STATISTICS:

      nv50_query_get(push, q, 0x20, 0x05805002);

      nv50_query_get(push, q, 0x30, 0x06805002);

      break;

   case PIPE_QUERY_TIME_ELAPSED:

      nv50_query_get(push, q, 0x10, 0x00005002);

      break;

   default:

      break;

   }

   q->ready = FALSE;

}

static void

nv50_query_end(struct pipe_context *pipe, struct pipe_query *pq)

{

   struct nv50_context *nv50 = nv50_context(pipe);

   struct nouveau_pushbuf *push = nv50->base.pushbuf;

   struct nv50_query *q = nv50_query(pq);

   switch (q->type) {

   case PIPE_QUERY_OCCLUSION_COUNTER:

      nv50_query_get(push, q, 0, 0x0100f002);

      PUSH_SPACE(push, 2);

      BEGIN_NV04(push, NV50_3D(SAMPLECNT_ENABLE), 1);

      PUSH_DATA (push, 0);

      break;

   case PIPE_QUERY_PRIMITIVES_GENERATED:

      nv50_query_get(push, q, 0, 0x06805002);

      break;

   case PIPE_QUERY_PRIMITIVES_EMITTED:

      nv50_query_get(push, q, 0, 0x05805002);

      break;

   case PIPE_QUERY_SO_STATISTICS:

      nv50_query_get(push, q, 0x00, 0x05805002);

      nv50_query_get(push, q, 0x10, 0x06805002);

      break;

   case PIPE_QUERY_TIMESTAMP:

      q->sequence++;

      /* fall through */

   case PIPE_QUERY_TIME_ELAPSED:

      nv50_query_get(push, q, 0, 0x00005002);

      break;

   case PIPE_QUERY_GPU_FINISHED:

      q->sequence++;

      nv50_query_get(push, q, 0, 0x1000f010);

      break;

   case NVA0_QUERY_STREAM_OUTPUT_BUFFER_OFFSET:

      nv50_query_get(push, q, 0, 0x0d005002 | (q->index << 5));

      break;

   case PIPE_QUERY_TIMESTAMP_DISJOINT:

      break;

   default:

      assert(0);

      break;

   }

   q->ready = q->flushed = FALSE;

}

static INLINE boolean

nv50_query_ready(struct nv50_query *q)

{

   return q->ready || (!q->is64bit && (q->data[0] == q->sequence));

}

static boolean

nv50_query_result(struct pipe_context *pipe, struct pipe_query *pq,

                  boolean wait, union pipe_query_result *result)

{

   struct nv50_context *nv50 = nv50_context(pipe);

   struct nv50_query *q = nv50_query(pq);

   uint64_t *res64 = (uint64_t *)result;

   uint32_t *res32 = (uint32_t *)result;

   boolean *res8 = (boolean *)result;

   uint64_t *data64 = (uint64_t *)q->data;

   if (!q->ready) /* update ? */

      q->ready = nv50_query_ready(q);

   if (!q->ready) {

      if (!wait) {

         /* for broken apps that spin on GL_QUERY_RESULT_AVAILABLE */

         if (!q->flushed) {

            q->flushed = TRUE;

            PUSH_KICK(nv50->base.pushbuf);

         }

         return FALSE;

      }

      if (nouveau_bo_wait(q->bo, NOUVEAU_BO_RD, nv50->screen->base.client))

         return FALSE;

   }

   q->ready = TRUE;

   switch (q->type) {

   case PIPE_QUERY_GPU_FINISHED:

      res8[0] = TRUE;

      break;

   case PIPE_QUERY_OCCLUSION_COUNTER: /* u32 sequence, u32 count, u64 time */

      res64[0] = q->data[1];

      break;

   case PIPE_QUERY_PRIMITIVES_GENERATED: /* u64 count, u64 time */

   case PIPE_QUERY_PRIMITIVES_EMITTED: /* u64 count, u64 time */

      res64[0] = data64[0] - data64[2];

      break;

   case PIPE_QUERY_SO_STATISTICS:

      res64[0] = data64[0] - data64[4];

      res64[1] = data64[2] - data64[6];

      break;

   case PIPE_QUERY_TIMESTAMP:

      res64[0] = data64[1];

      break;

   case PIPE_QUERY_TIMESTAMP_DISJOINT:

      res64[0] = 1000000000;

      res8[8] = FALSE;

      break;

   case PIPE_QUERY_TIME_ELAPSED:

      res64[0] = data64[1] - data64[3];

      break;

   case NVA0_QUERY_STREAM_OUTPUT_BUFFER_OFFSET:

      res32[0] = q->data[1];

      break;

   default:

      return FALSE;

   }

   return TRUE;

}

void

nv84_query_fifo_wait(struct nouveau_pushbuf *push, struct pipe_query *pq)

{

   struct nv50_query *q = nv50_query(pq);

   unsigned offset = q->offset;

   PUSH_SPACE(push, 5);

   PUSH_REFN (push, q->bo, NOUVEAU_BO_GART | NOUVEAU_BO_RD);

   BEGIN_NV04(push, SUBC_3D(NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH), 4);

   PUSH_DATAh(push, q->bo->offset + offset);

   PUSH_DATA (push, q->bo->offset + offset);

   PUSH_DATA (push, q->sequence);

   PUSH_DATA (push, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL);

}

static void

nv50_render_condition(struct pipe_context *pipe,

                      struct pipe_query *pq,

                      boolean condition, uint mode)

{

   struct nv50_context *nv50 = nv50_context(pipe);

   struct nouveau_pushbuf *push = nv50->base.pushbuf;

   struct nv50_query *q;

   nv50->cond_query = pq;

   nv50->cond_cond = condition;

   nv50->cond_mode = mode;

   PUSH_SPACE(push, 6);

   if (!pq) {

      BEGIN_NV04(push, NV50_3D(COND_MODE), 1);

      PUSH_DATA (push, NV50_3D_COND_MODE_ALWAYS);

      return;

   }

   q = nv50_query(pq);

   if (mode == PIPE_RENDER_COND_WAIT ||

       mode == PIPE_RENDER_COND_BY_REGION_WAIT) {

      BEGIN_NV04(push, SUBC_3D(NV50_GRAPH_SERIALIZE), 1);

      PUSH_DATA (push, 0);

   }

   BEGIN_NV04(push, NV50_3D(COND_ADDRESS_HIGH), 3);

   PUSH_DATAh(push, q->bo->offset + q->offset);

   PUSH_DATA (push, q->bo->offset + q->offset);

   PUSH_DATA (push, NV50_3D_COND_MODE_RES_NON_ZERO);

}

void

nv50_query_pushbuf_submit(struct nouveau_pushbuf *push,

                          struct pipe_query *pq, unsigned result_offset)

{

   struct nv50_query *q = nv50_query(pq);

   /* XXX: does this exist ? */

#define NV50_IB_ENTRY_1_NO_PREFETCH (0 << (31 - 8))

   nouveau_pushbuf_space(push, 0, 0, 1);

   nouveau_pushbuf_data(push, q->bo, q->offset + result_offset, 4 |

                        NV50_IB_ENTRY_1_NO_PREFETCH);

}

void

nva0_so_target_save_offset(struct pipe_context *pipe,

                           struct pipe_stream_output_target *ptarg,

                           unsigned index, boolean serialize)

{

   struct nv50_so_target *targ = nv50_so_target(ptarg);

   if (serialize) {

      struct nouveau_pushbuf *push = nv50_context(pipe)->base.pushbuf;

      PUSH_SPACE(push, 2);

      BEGIN_NV04(push, SUBC_3D(NV50_GRAPH_SERIALIZE), 1);

      PUSH_DATA (push, 0);

   }

   nv50_query(targ->pq)->index = index;

   nv50_query_end(pipe, targ->pq);

}

void

nv50_init_query_functions(struct nv50_context *nv50)

{

   struct pipe_context *pipe = &nv50->base.pipe;

   pipe->create_query = nv50_query_create;

   pipe->destroy_query = nv50_query_destroy;

   pipe->begin_query = nv50_query_begin;

   pipe->end_query = nv50_query_end;

   pipe->get_query_result = nv50_query_result;

   pipe->render_condition = nv50_render_condition;

}