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  1. /*
  2.  * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
  3.  * Copyright 2010 Marek Olšák <maraeo@gmail.com>
  4.  *
  5.  * Permission is hereby granted, free of charge, to any person obtaining a
  6.  * copy of this software and associated documentation files (the "Software"),
  7.  * to deal in the Software without restriction, including without limitation
  8.  * on the rights to use, copy, modify, merge, publish, distribute, sub
  9.  * license, and/or sell copies of the Software, and to permit persons to whom
  10.  * the Software is furnished to do so, subject to the following conditions:
  11.  *
  12.  * The above copyright notice and this permission notice (including the next
  13.  * paragraph) shall be included in all copies or substantial portions of the
  14.  * Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19.  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22.  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
  23.  
  24. #include "draw/draw_context.h"
  25. #include "draw/draw_private.h"
  26.  
  27. #include "util/u_simple_list.h"
  28. #include "util/u_upload_mgr.h"
  29.  
  30. #include "os/os_time.h"
  31.  
  32. #include "r300_context.h"
  33. #include "r300_cs.h"
  34. #include "r300_emit.h"
  35.  
  36.  
  37. static void r300_flush_and_cleanup(struct r300_context *r300, unsigned flags)
  38. {
  39.     struct r300_atom *atom;
  40.  
  41.     r300_emit_hyperz_end(r300);
  42.     r300_emit_query_end(r300);
  43.     if (r300->screen->caps.is_r500)
  44.         r500_emit_index_bias(r300, 0);
  45.  
  46.     /* The DDX doesn't set these regs. */
  47.     if (r300->screen->info.drm_minor >= 6) {
  48.         CS_LOCALS(r300);
  49.         OUT_CS_REG_SEQ(R300_GB_MSPOS0, 2);
  50.         OUT_CS(0x66666666);
  51.         OUT_CS(0x6666666);
  52.     }
  53.  
  54.     r300->flush_counter++;
  55.     r300->rws->cs_flush(r300->cs, flags, 0);
  56.     r300->dirty_hw = 0;
  57.  
  58.     /* New kitchen sink, baby. */
  59.     foreach_atom(r300, atom) {
  60.         if (atom->state || atom->allow_null_state) {
  61.             r300_mark_atom_dirty(r300, atom);
  62.         }
  63.     }
  64.     r300->vertex_arrays_dirty = TRUE;
  65.  
  66.     /* Unmark HWTCL state for SWTCL. */
  67.     if (!r300->screen->caps.has_tcl) {
  68.         r300->vs_state.dirty = FALSE;
  69.         r300->vs_constants.dirty = FALSE;
  70.         r300->clip_state.dirty = FALSE;
  71.     }
  72. }
  73.  
  74. void r300_flush(struct pipe_context *pipe,
  75.                 unsigned flags,
  76.                 struct pipe_fence_handle **fence)
  77. {
  78.     struct r300_context *r300 = r300_context(pipe);
  79.     struct pb_buffer **rfence = (struct pb_buffer**)fence;
  80.  
  81.     if (r300->screen->info.drm_minor >= 12) {
  82.         flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
  83.     }
  84.  
  85.     if (rfence) {
  86.         /* Create a fence, which is a dummy BO. */
  87.         *rfence = r300->rws->buffer_create(r300->rws, 1, 1, TRUE,
  88.                                            RADEON_DOMAIN_GTT);
  89.         /* Add the fence as a dummy relocation. */
  90.         r300->rws->cs_add_reloc(r300->cs,
  91.                                 r300->rws->buffer_get_cs_handle(*rfence),
  92.                                 RADEON_USAGE_READWRITE, RADEON_DOMAIN_GTT);
  93.     }
  94.  
  95.     if (r300->dirty_hw) {
  96.         r300_flush_and_cleanup(r300, flags);
  97.     } else {
  98.         if (rfence) {
  99.             /* We have to create a fence object, but the command stream is empty
  100.              * and we cannot emit an empty CS. Let's write to some reg. */
  101.             CS_LOCALS(r300);
  102.             OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0);
  103.             r300->rws->cs_flush(r300->cs, flags, 0);
  104.         } else {
  105.             /* Even if hw is not dirty, we should at least reset the CS in case
  106.              * the space checking failed for the first draw operation. */
  107.             r300->rws->cs_flush(r300->cs, flags, 0);
  108.         }
  109.     }
  110.  
  111.     /* Update Hyper-Z status. */
  112.     if (r300->hyperz_enabled) {
  113.         /* If there was a Z clear, keep Hyper-Z access. */
  114.         if (r300->num_z_clears) {
  115.             r300->hyperz_time_of_last_flush = os_time_get();
  116.             r300->num_z_clears = 0;
  117.         } else if (r300->hyperz_time_of_last_flush - os_time_get() > 2000000) {
  118.             /* If there hasn't been a Z clear for 2 seconds, revoke Hyper-Z access. */
  119.             r300->hiz_in_use = FALSE;
  120.  
  121.             /* Decompress the Z buffer. */
  122.             if (r300->zmask_in_use) {
  123.                 if (r300->locked_zbuffer) {
  124.                     r300_decompress_zmask_locked(r300);
  125.                 } else {
  126.                     r300_decompress_zmask(r300);
  127.                 }
  128.  
  129.                 r300_flush_and_cleanup(r300, flags);
  130.             }
  131.  
  132.             /* Revoke Hyper-Z access, so that some other process can take it. */
  133.             r300->rws->cs_request_feature(r300->cs, RADEON_FID_R300_HYPERZ_ACCESS,
  134.                                           FALSE);
  135.             r300->hyperz_enabled = FALSE;
  136.         }
  137.     }
  138. }
  139.  
  140. static void r300_flush_wrapped(struct pipe_context *pipe,
  141.                                struct pipe_fence_handle **fence,
  142.                                unsigned flags)
  143. {
  144.     r300_flush(pipe,
  145.                flags & PIPE_FLUSH_END_OF_FRAME ? RADEON_FLUSH_END_OF_FRAME : 0,
  146.                fence);
  147. }
  148.  
  149. void r300_init_flush_functions(struct r300_context* r300)
  150. {
  151.     r300->context.flush = r300_flush_wrapped;
  152. }
  153.