src/gallium/drivers/radeonsi/si_hw_context.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Jerome Glisse
  25  */
  26
  27 #include "si_pipe.h"
  28
  29 static unsigned si_descriptor_list_cs_space(unsigned count, unsigned element_size)
  30 {
  31         /* Ensure we have enough space to start a new range in a hole */
  32         assert(element_size >= 3);
  33
  34         /* 5 dwords for possible load to reinitialize when we have no preamble
  35          * IB + 5 dwords for write to L2 + 3 bytes for every range written to
  36          * CE RAM.
  37          */
  38         return 5 + 5 + 3 + count * element_size;
  39 }
  40
  41 static unsigned si_ce_needed_cs_space(void)
  42 {
  43         unsigned space = 0;
  44
  45         space += si_descriptor_list_cs_space(SI_NUM_CONST_BUFFERS, 4);
  46         space += si_descriptor_list_cs_space(SI_NUM_RW_BUFFERS, 4);
  47         space += si_descriptor_list_cs_space(SI_NUM_SHADER_BUFFERS, 4);
  48         space += si_descriptor_list_cs_space(SI_NUM_SAMPLERS, 16);
  49         space += si_descriptor_list_cs_space(SI_NUM_IMAGES, 8);
  50
  51         space *= SI_NUM_SHADERS;
  52
  53         /* Increment CE counter packet */
  54         space += 2;
  55
  56         return space;
  57 }
  58
  59 /* initialize */
  60 void si_need_cs_space(struct si_context *ctx)
  61 {
  62         struct radeon_winsys_cs *cs = ctx->b.gfx.cs;
  63         struct radeon_winsys_cs *ce_ib = ctx->ce_ib;
  64         struct radeon_winsys_cs *dma = ctx->b.dma.cs;
  65
  66         /* Flush the DMA IB if it's not empty. */
  67         if (dma && dma->cdw)
  68                 ctx->b.dma.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
  69
  70         /* There are two memory usage counters in the winsys for all buffers
  71          * that have been added (cs_add_buffer) and two counters in the pipe
  72          * driver for those that haven't been added yet.
  73          */
  74         if (unlikely(!ctx->b.ws->cs_memory_below_limit(ctx->b.gfx.cs,
  75                                                        ctx->b.vram, ctx->b.gtt))) {
  76                 ctx->b.gtt = 0;
  77                 ctx->b.vram = 0;
  78                 ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
  79                 return;
  80         }
  81         ctx->b.gtt = 0;
  82         ctx->b.vram = 0;
  83
  84         /* If the CS is sufficiently large, don't count the space needed
  85          * and just flush if there is not enough space left.
  86          */
  87         if (unlikely(cs->cdw > cs->max_dw - 2048 ||
  88                      (ce_ib && ce_ib->max_dw - ce_ib->cdw <
  89                       si_ce_needed_cs_space())))
  90                 ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
  91 }
  92
  93 void si_context_gfx_flush(void *context, unsigned flags,
  94                           struct pipe_fence_handle **fence)
  95 {
  96         struct si_context *ctx = context;
  97         struct radeon_winsys_cs *cs = ctx->b.gfx.cs;
  98         struct radeon_winsys *ws = ctx->b.ws;
  99
 100         if (ctx->gfx_flush_in_progress)
 101                 return;
 102
 103         ctx->gfx_flush_in_progress = true;
 104
 105         if (cs->cdw == ctx->b.initial_gfx_cs_size &&
 106             (!fence || ctx->last_gfx_fence)) {
 107                 if (fence)
 108                         ws->fence_reference(fence, ctx->last_gfx_fence);
 109                 if (!(flags & RADEON_FLUSH_ASYNC))
 110                         ws->cs_sync_flush(cs);
 111                 ctx->gfx_flush_in_progress = false;
 112                 return;
 113         }
 114
 115         r600_preflush_suspend_features(&ctx->b);
 116
 117         ctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER |
 118                         SI_CONTEXT_INV_VMEM_L1 |
 119                         SI_CONTEXT_INV_GLOBAL_L2 |
 120                         SI_CONTEXT_CS_PARTIAL_FLUSH |
 121                         /* this is probably not needed anymore */
 122                         SI_CONTEXT_PS_PARTIAL_FLUSH;
 123         si_emit_cache_flush(ctx, NULL);
 124
 125         /* force to keep tiling flags */
 126         flags |= RADEON_FLUSH_KEEP_TILING_FLAGS;
 127
 128         if (ctx->trace_buf)
 129                 si_trace_emit(ctx);
 130
 131         if (ctx->is_debug) {
 132                 unsigned i;
 133
 134                 /* Save the IB for debug contexts. */
 135                 free(ctx->last_ib);
 136                 ctx->last_ib_dw_size = cs->cdw;
 137                 ctx->last_ib = malloc(cs->cdw * 4);
 138                 memcpy(ctx->last_ib, cs->buf, cs->cdw * 4);
 139                 r600_resource_reference(&ctx->last_trace_buf, ctx->trace_buf);
 140                 r600_resource_reference(&ctx->trace_buf, NULL);
 141
 142                 /* Save the buffer list. */
 143                 if (ctx->last_bo_list) {
 144                         for (i = 0; i < ctx->last_bo_count; i++)
 145                                 pb_reference(&ctx->last_bo_list[i].buf, NULL);
 146                         free(ctx->last_bo_list);
 147                 }
 148                 ctx->last_bo_count = ws->cs_get_buffer_list(cs, NULL);
 149                 ctx->last_bo_list = calloc(ctx->last_bo_count,
 150                                            sizeof(ctx->last_bo_list[0]));
 151                 ws->cs_get_buffer_list(cs, ctx->last_bo_list);
 152         }
 153
 154         /* Flush the CS. */
 155         ws->cs_flush(cs, flags, &ctx->last_gfx_fence);
 156
 157         if (fence)
 158                 ws->fence_reference(fence, ctx->last_gfx_fence);
 159
 160         /* Check VM faults if needed. */
 161         if (ctx->screen->b.debug_flags & DBG_CHECK_VM)
 162                 si_check_vm_faults(ctx);
 163
 164         si_begin_new_cs(ctx);
 165         ctx->gfx_flush_in_progress = false;
 166 }
 167
 168 void si_begin_new_cs(struct si_context *ctx)
 169 {
 170         if (ctx->is_debug) {
 171                 uint32_t zero = 0;
 172
 173                 /* Create a buffer used for writing trace IDs and initialize it to 0. */
 174                 assert(!ctx->trace_buf);
 175                 ctx->trace_buf = (struct r600_resource*)
 176                                  pipe_buffer_create(ctx->b.b.screen, PIPE_BIND_CUSTOM,
 177                                                     PIPE_USAGE_STAGING, 4);
 178                 if (ctx->trace_buf)
 179                         pipe_buffer_write_nooverlap(&ctx->b.b, &ctx->trace_buf->b.b,
 180                                                     0, sizeof(zero), &zero);
 181                 ctx->trace_id = 0;
 182         }
 183
 184         if (ctx->trace_buf)
 185                 si_trace_emit(ctx);
 186
 187         /* Flush read caches at the beginning of CS. */
 188         ctx->b.flags |= SI_CONTEXT_FLUSH_AND_INV_FRAMEBUFFER |
 189                         SI_CONTEXT_INV_VMEM_L1 |
 190                         SI_CONTEXT_INV_GLOBAL_L2 |
 191                         SI_CONTEXT_INV_SMEM_L1 |
 192                         SI_CONTEXT_INV_ICACHE |
 193                         R600_CONTEXT_START_PIPELINE_STATS;
 194
 195         /* set all valid group as dirty so they get reemited on
 196          * next draw command
 197          */
 198         si_pm4_reset_emitted(ctx);
 199
 200         /* The CS initialization should be emitted before everything else. */
 201         si_pm4_emit(ctx, ctx->init_config);
 202         if (ctx->init_config_gs_rings)
 203                 si_pm4_emit(ctx, ctx->init_config_gs_rings);
 204
 205         ctx->framebuffer.dirty_cbufs = (1 << 8) - 1;
 206         ctx->framebuffer.dirty_zsbuf = true;
 207         si_mark_atom_dirty(ctx, &ctx->framebuffer.atom);
 208
 209         si_mark_atom_dirty(ctx, &ctx->clip_regs);
 210         si_mark_atom_dirty(ctx, &ctx->clip_state.atom);
 211         si_mark_atom_dirty(ctx, &ctx->msaa_sample_locs);
 212         si_mark_atom_dirty(ctx, &ctx->msaa_config);
 213         si_mark_atom_dirty(ctx, &ctx->sample_mask.atom);
 214         si_mark_atom_dirty(ctx, &ctx->cb_render_state);
 215         si_mark_atom_dirty(ctx, &ctx->blend_color.atom);
 216         si_mark_atom_dirty(ctx, &ctx->db_render_state);
 217         si_mark_atom_dirty(ctx, &ctx->stencil_ref.atom);
 218         si_mark_atom_dirty(ctx, &ctx->spi_map);
 219         si_mark_atom_dirty(ctx, &ctx->b.streamout.enable_atom);
 220         si_mark_atom_dirty(ctx, &ctx->b.render_cond_atom);
 221         si_all_descriptors_begin_new_cs(ctx);
 222
 223         ctx->b.scissors.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
 224         ctx->b.viewports.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
 225         si_mark_atom_dirty(ctx, &ctx->b.scissors.atom);
 226         si_mark_atom_dirty(ctx, &ctx->b.viewports.atom);
 227
 228         r600_postflush_resume_features(&ctx->b);
 229
 230         ctx->b.initial_gfx_cs_size = ctx->b.gfx.cs->cdw;
 231
 232         /* Invalidate various draw states so that they are emitted before
 233          * the first draw call. */
 234         si_invalidate_draw_sh_constants(ctx);
 235         ctx->last_primitive_restart_en = -1;
 236         ctx->last_restart_index = SI_RESTART_INDEX_UNKNOWN;
 237         ctx->last_gs_out_prim = -1;
 238         ctx->last_prim = -1;
 239         ctx->last_multi_vgt_param = -1;
 240         ctx->last_ls_hs_config = -1;
 241         ctx->last_rast_prim = -1;
 242         ctx->last_sc_line_stipple = ~0;
 243         ctx->emit_scratch_reloc = true;
 244         ctx->last_ls = NULL;
 245         ctx->last_tcs = NULL;
 246         ctx->last_tes_sh_base = -1;
 247         ctx->last_num_tcs_input_cp = -1;
 248
 249         ctx->cs_shader_state.initialized = false;
 250 }