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 #include "radeon/r600_cs.h"
  29
  30 static unsigned si_descriptor_list_cs_space(unsigned count, unsigned element_size)
  31 {
  32         /* Ensure we have enough space to start a new range in a hole */
  33         assert(element_size >= 3);
  34
  35         /* 5 dwords for write to L2 + 3 bytes for the packet header of
  36          * every disjoint range written to CE RAM.
  37          */
  38         return 5 + (3 * count / 2) + 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_SHADER_BUFFERS +
  46                                              SI_NUM_CONST_BUFFERS, 4);
  47         /* two 8-byte images share one 16-byte slot */
  48         space += si_descriptor_list_cs_space(SI_NUM_IMAGES / 2 +
  49                                              SI_NUM_SAMPLERS, 16);
  50         space *= SI_NUM_SHADERS;
  51
  52         space += si_descriptor_list_cs_space(SI_NUM_RW_BUFFERS, 4);
  53
  54         /* Increment CE counter packet */
  55         space += 2;
  56
  57         return space;
  58 }
  59
  60 /* initialize */
  61 void si_need_cs_space(struct si_context *ctx)
  62 {
  63         struct radeon_winsys_cs *cs = ctx->b.gfx.cs;
  64         struct radeon_winsys_cs *ce_ib = ctx->ce_ib;
  65
  66         /* There is no need to flush the DMA IB here, because
  67          * r600_need_dma_space always flushes the GFX IB if there is
  68          * a conflict, which means any unflushed DMA commands automatically
  69          * precede the GFX IB (= they had no dependency on the GFX IB when
  70          * they were submitted).
  71          */
  72
  73         /* There are two memory usage counters in the winsys for all buffers
  74          * that have been added (cs_add_buffer) and two counters in the pipe
  75          * driver for those that haven't been added yet.
  76          */
  77         if (unlikely(!radeon_cs_memory_below_limit(ctx->b.screen, ctx->b.gfx.cs,
  78                                                    ctx->b.vram, ctx->b.gtt))) {
  79                 ctx->b.gtt = 0;
  80                 ctx->b.vram = 0;
  81                 ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
  82                 return;
  83         }
  84         ctx->b.gtt = 0;
  85         ctx->b.vram = 0;
  86
  87         /* If the CS is sufficiently large, don't count the space needed
  88          * and just flush if there is not enough space left.
  89          */
  90         if (!ctx->b.ws->cs_check_space(cs, 2048) ||
  91             (ce_ib && !ctx->b.ws->cs_check_space(ce_ib, si_ce_needed_cs_space())))
  92                 ctx->b.gfx.flush(ctx, RADEON_FLUSH_ASYNC, NULL);
  93 }
  94
  95 void si_context_gfx_flush(void *context, unsigned flags,
  96                           struct pipe_fence_handle **fence)
  97 {
  98         struct si_context *ctx = context;
  99         struct radeon_winsys_cs *cs = ctx->b.gfx.cs;
 100         struct radeon_winsys *ws = ctx->b.ws;
 101
 102         if (ctx->gfx_flush_in_progress)
 103                 return;
 104
 105         if (!radeon_emitted(cs, ctx->b.initial_gfx_cs_size))
 106                 return;
 107
 108         if (r600_check_device_reset(&ctx->b))
 109                 return;
 110
 111         if (ctx->screen->b.debug_flags & DBG_CHECK_VM)
 112                 flags &= ~RADEON_FLUSH_ASYNC;
 113
 114         /* If the state tracker is flushing the GFX IB, r600_flush_from_st is
 115          * responsible for flushing the DMA IB and merging the fences from both.
 116          * This code is only needed when the driver flushes the GFX IB
 117          * internally, and it never asks for a fence handle.
 118          */
 119         if (radeon_emitted(ctx->b.dma.cs, 0)) {
 120                 assert(fence == NULL); /* internal flushes only */
 121                 ctx->b.dma.flush(ctx, flags, NULL);
 122         }
 123
 124         ctx->gfx_flush_in_progress = true;
 125
 126         /* This CE dump should be done in parallel with the last draw. */
 127         if (ctx->ce_ib)
 128                 si_ce_save_all_descriptors_at_ib_end(ctx);
 129
 130         r600_preflush_suspend_features(&ctx->b);
 131
 132         /* DRM 3.1.0 doesn't flush TC for VI correctly. */
 133         if (ctx->b.chip_class == VI && ctx->b.screen->info.drm_minor <= 1) {
 134                 ctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH |
 135                                 SI_CONTEXT_CS_PARTIAL_FLUSH |
 136                                 SI_CONTEXT_INV_GLOBAL_L2 |
 137                                 SI_CONTEXT_INV_VMEM_L1;
 138         } else if (ctx->b.chip_class == SI) {
 139                 /* The kernel doesn't wait for idle before doing SURFACE_SYNC. */
 140                 ctx->b.flags |= SI_CONTEXT_PS_PARTIAL_FLUSH |
 141                                 SI_CONTEXT_CS_PARTIAL_FLUSH;
 142         }
 143
 144         si_emit_cache_flush(ctx);
 145
 146         if (ctx->trace_buf)
 147                 si_trace_emit(ctx);
 148
 149         if (ctx->is_debug) {
 150                 /* Save the IB for debug contexts. */
 151                 radeon_clear_saved_cs(&ctx->last_gfx);
 152                 radeon_save_cs(ws, cs, &ctx->last_gfx);
 153                 r600_resource_reference(&ctx->last_trace_buf, ctx->trace_buf);
 154                 r600_resource_reference(&ctx->trace_buf, NULL);
 155         }
 156
 157         /* Flush the CS. */
 158         ws->cs_flush(cs, flags, &ctx->b.last_gfx_fence);
 159         if (fence)
 160                 ws->fence_reference(fence, ctx->b.last_gfx_fence);
 161         ctx->b.num_gfx_cs_flushes++;
 162
 163         /* Check VM faults if needed. */
 164         if (ctx->screen->b.debug_flags & DBG_CHECK_VM) {
 165                 /* Use conservative timeout 800ms, after which we won't wait any
 166                  * longer and assume the GPU is hung.
 167                  */
 168                 ctx->b.ws->fence_wait(ctx->b.ws, ctx->b.last_gfx_fence, 800*1000*1000);
 169
 170                 si_check_vm_faults(&ctx->b, &ctx->last_gfx, RING_GFX);
 171         }
 172
 173         si_begin_new_cs(ctx);
 174         ctx->gfx_flush_in_progress = false;
 175 }
 176
 177 void si_begin_new_cs(struct si_context *ctx)
 178 {
 179         if (ctx->is_debug) {
 180                 uint32_t zero = 0;
 181
 182                 /* Create a buffer used for writing trace IDs and initialize it to 0. */
 183                 assert(!ctx->trace_buf);
 184                 ctx->trace_buf = (struct r600_resource*)
 185                                  pipe_buffer_create(ctx->b.b.screen, 0,
 186                                                     PIPE_USAGE_STAGING, 4);
 187                 if (ctx->trace_buf)
 188                         pipe_buffer_write_nooverlap(&ctx->b.b, &ctx->trace_buf->b.b,
 189                                                     0, sizeof(zero), &zero);
 190                 ctx->trace_id = 0;
 191         }
 192
 193         if (ctx->trace_buf)
 194                 si_trace_emit(ctx);
 195
 196         /* Flush read caches at the beginning of CS not flushed by the kernel. */
 197         if (ctx->b.chip_class >= CIK)
 198                 ctx->b.flags |= SI_CONTEXT_INV_SMEM_L1 |
 199                                 SI_CONTEXT_INV_ICACHE;
 200
 201         ctx->b.flags |= R600_CONTEXT_START_PIPELINE_STATS;
 202
 203         /* set all valid group as dirty so they get reemited on
 204          * next draw command
 205          */
 206         si_pm4_reset_emitted(ctx);
 207
 208         /* The CS initialization should be emitted before everything else. */
 209         si_pm4_emit(ctx, ctx->init_config);
 210         if (ctx->init_config_gs_rings)
 211                 si_pm4_emit(ctx, ctx->init_config_gs_rings);
 212
 213         if (ctx->ce_preamble_ib)
 214                 si_ce_enable_loads(ctx->ce_preamble_ib);
 215         else if (ctx->ce_ib)
 216                 si_ce_enable_loads(ctx->ce_ib);
 217
 218         if (ctx->ce_ib)
 219                 si_ce_restore_all_descriptors_at_ib_start(ctx);
 220
 221         if (ctx->b.chip_class >= CIK)
 222                 si_mark_atom_dirty(ctx, &ctx->prefetch_L2);
 223
 224         ctx->framebuffer.dirty_cbufs = (1 << 8) - 1;
 225         ctx->framebuffer.dirty_zsbuf = true;
 226         si_mark_atom_dirty(ctx, &ctx->framebuffer.atom);
 227
 228         si_mark_atom_dirty(ctx, &ctx->clip_regs);
 229         si_mark_atom_dirty(ctx, &ctx->clip_state.atom);
 230         ctx->msaa_sample_locs.nr_samples = 0;
 231         si_mark_atom_dirty(ctx, &ctx->msaa_sample_locs.atom);
 232         si_mark_atom_dirty(ctx, &ctx->msaa_config);
 233         si_mark_atom_dirty(ctx, &ctx->sample_mask.atom);
 234         si_mark_atom_dirty(ctx, &ctx->cb_render_state);
 235         si_mark_atom_dirty(ctx, &ctx->blend_color.atom);
 236         si_mark_atom_dirty(ctx, &ctx->db_render_state);
 237         si_mark_atom_dirty(ctx, &ctx->stencil_ref.atom);
 238         si_mark_atom_dirty(ctx, &ctx->spi_map);
 239         si_mark_atom_dirty(ctx, &ctx->b.streamout.enable_atom);
 240         si_mark_atom_dirty(ctx, &ctx->b.render_cond_atom);
 241         si_all_descriptors_begin_new_cs(ctx);
 242         si_all_resident_buffers_begin_new_cs(ctx);
 243
 244         ctx->b.scissors.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
 245         ctx->b.viewports.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
 246         ctx->b.viewports.depth_range_dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1;
 247         si_mark_atom_dirty(ctx, &ctx->b.scissors.atom);
 248         si_mark_atom_dirty(ctx, &ctx->b.viewports.atom);
 249
 250         si_mark_atom_dirty(ctx, &ctx->scratch_state);
 251         if (ctx->scratch_buffer) {
 252                 r600_context_add_resource_size(&ctx->b.b,
 253                                                &ctx->scratch_buffer->b.b);
 254         }
 255
 256         r600_postflush_resume_features(&ctx->b);
 257
 258         assert(!ctx->b.gfx.cs->prev_dw);
 259         ctx->b.initial_gfx_cs_size = ctx->b.gfx.cs->current.cdw;
 260
 261         /* Invalidate various draw states so that they are emitted before
 262          * the first draw call. */
 263         si_invalidate_draw_sh_constants(ctx);
 264         ctx->last_index_size = -1;
 265         ctx->last_primitive_restart_en = -1;
 266         ctx->last_restart_index = SI_RESTART_INDEX_UNKNOWN;
 267         ctx->last_gs_out_prim = -1;
 268         ctx->last_prim = -1;
 269         ctx->last_multi_vgt_param = -1;
 270         ctx->last_rast_prim = -1;
 271         ctx->last_sc_line_stipple = ~0;
 272         ctx->last_vs_state = ~0;
 273         ctx->last_ls = NULL;
 274         ctx->last_tcs = NULL;
 275         ctx->last_tes_sh_base = -1;
 276         ctx->last_num_tcs_input_cp = -1;
 277
 278         ctx->cs_shader_state.initialized = false;
 279 }