[mesa.git] / src / gallium / drivers / radeonsi / si_gfx_cs.c

/*
 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
 * Copyright 2018 Advanced Micro Devices, Inc.
 * All Rights Reserved.
 *
 * 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
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, 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 (including the next
 * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
 */

#include "si_build_pm4.h"
#include "si_pipe.h"
#include "sid.h"
#include "util/os_time.h"
#include "util/u_upload_mgr.h"

/* initialize */
void si_need_gfx_cs_space(struct si_context *ctx)
{
   struct radeon_cmdbuf *cs = ctx->gfx_cs;

   /* There is no need to flush the DMA IB here, because
    * si_need_dma_space always flushes the GFX IB if there is
    * a conflict, which means any unflushed DMA commands automatically
    * precede the GFX IB (= they had no dependency on the GFX IB when
    * they were submitted).
    */

   /* There are two memory usage counters in the winsys for all buffers
    * that have been added (cs_add_buffer) and two counters in the pipe
    * driver for those that haven't been added yet.
    */
   if (unlikely(!radeon_cs_memory_below_limit(ctx->screen, ctx->gfx_cs, ctx->vram, ctx->gtt))) {
      ctx->gtt = 0;
      ctx->vram = 0;
      si_flush_gfx_cs(ctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
      return;
   }
   ctx->gtt = 0;
   ctx->vram = 0;

   unsigned need_dwords = si_get_minimum_num_gfx_cs_dwords(ctx);
   if (!ctx->ws->cs_check_space(cs, need_dwords, false))
      si_flush_gfx_cs(ctx, RADEON_FLUSH_ASYNC_START_NEXT_GFX_IB_NOW, NULL);
}

void si_unref_sdma_uploads(struct si_context *sctx)
{
   for (unsigned i = 0; i < sctx->num_sdma_uploads; i++) {
      si_resource_reference(&sctx->sdma_uploads[i].dst, NULL);
      si_resource_reference(&sctx->sdma_uploads[i].src, NULL);
   }
   sctx->num_sdma_uploads = 0;
}

void si_flush_gfx_cs(struct si_context *ctx, unsigned flags, struct pipe_fence_handle **fence)
{
   struct radeon_cmdbuf *cs = ctx->gfx_cs;
   struct radeon_winsys *ws = ctx->ws;
   const unsigned wait_ps_cs = SI_CONTEXT_PS_PARTIAL_FLUSH | SI_CONTEXT_CS_PARTIAL_FLUSH;
   unsigned wait_flags = 0;

   if (ctx->gfx_flush_in_progress)
      return;

   /* The amdgpu kernel driver always synchronizes execution for shared DMABUFs
    * between processes, so we don't have to wait at the end of IBs to make sure
    * everything is idle.
    *
    * The amdgpu winsys synchronizes execution for buffers shared by different
    * contexts within the same process.
    *
    * Interop with AMDVLK, RADV, or OpenCL within the same process requires
    * explicit fences or glFinish.
    */
   if (ctx->screen->info.is_amdgpu)
      flags |= RADEON_FLUSH_START_NEXT_GFX_IB_NOW;

   if (!ctx->screen->info.kernel_flushes_tc_l2_after_ib) {
      wait_flags |= wait_ps_cs | SI_CONTEXT_INV_L2;
   } else if (ctx->chip_class == GFX6) {
      /* The kernel flushes L2 before shaders are finished. */
      wait_flags |= wait_ps_cs;
   } else if (!(flags & RADEON_FLUSH_START_NEXT_GFX_IB_NOW)) {
      wait_flags |= wait_ps_cs;
   }

   /* Drop this flush if it's a no-op. */
   if (!radeon_emitted(cs, ctx->initial_gfx_cs_size) && (!wait_flags || !ctx->gfx_last_ib_is_busy))
      return;

   if (ctx->b.get_device_reset_status(&ctx->b) != PIPE_NO_RESET)
      return;

   if (ctx->screen->debug_flags & DBG(CHECK_VM))
      flags &= ~PIPE_FLUSH_ASYNC;

   ctx->gfx_flush_in_progress = true;

   /* If the state tracker is flushing the GFX IB, si_flush_from_st is
    * responsible for flushing the DMA IB and merging the fences from both.
    * If the driver flushes the GFX IB internally, and it should never ask
    * for a fence handle.
    */
   assert(!radeon_emitted(ctx->sdma_cs, 0) || fence == NULL);

   /* Update the sdma_uploads list by flushing the uploader. */
   u_upload_unmap(ctx->b.const_uploader);

   /* Execute SDMA uploads. */
   ctx->sdma_uploads_in_progress = true;
   for (unsigned i = 0; i < ctx->num_sdma_uploads; i++) {
      struct si_sdma_upload *up = &ctx->sdma_uploads[i];

      assert(up->src_offset % 4 == 0 && up->dst_offset % 4 == 0 && up->size % 4 == 0);

      si_sdma_copy_buffer(ctx, &up->dst->b.b, &up->src->b.b, up->dst_offset, up->src_offset,
                          up->size);
   }
   ctx->sdma_uploads_in_progress = false;
   si_unref_sdma_uploads(ctx);

   /* Flush SDMA (preamble IB). */
   if (radeon_emitted(ctx->sdma_cs, 0))
      si_flush_dma_cs(ctx, flags, NULL);

   if (radeon_emitted(ctx->prim_discard_compute_cs, 0)) {
      struct radeon_cmdbuf *compute_cs = ctx->prim_discard_compute_cs;
      si_compute_signal_gfx(ctx);

      /* Make sure compute shaders are idle before leaving the IB, so that
       * the next IB doesn't overwrite GDS that might be in use. */
      radeon_emit(compute_cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
      radeon_emit(compute_cs, EVENT_TYPE(V_028A90_CS_PARTIAL_FLUSH) | EVENT_INDEX(4));

      /* Save the GDS prim restart counter if needed. */
      if (ctx->preserve_prim_restart_gds_at_flush) {
         si_cp_copy_data(ctx, compute_cs, COPY_DATA_DST_MEM, ctx->wait_mem_scratch, 4,
                         COPY_DATA_GDS, NULL, 4);
      }
   }

   if (ctx->has_graphics) {
      if (!list_is_empty(&ctx->active_queries))
         si_suspend_queries(ctx);

      ctx->streamout.suspended = false;
      if (ctx->streamout.begin_emitted) {
         si_emit_streamout_end(ctx);
         ctx->streamout.suspended = true;

         /* Since NGG streamout uses GDS, we need to make GDS
          * idle when we leave the IB, otherwise another process
          * might overwrite it while our shaders are busy.
          */
         if (ctx->screen->use_ngg_streamout)
            wait_flags |= SI_CONTEXT_PS_PARTIAL_FLUSH;
      }
   }

   /* Make sure CP DMA is idle at the end of IBs after L2 prefetches
    * because the kernel doesn't wait for it. */
   if (ctx->chip_class >= GFX7)
      si_cp_dma_wait_for_idle(ctx);

   /* Wait for draw calls to finish if needed. */
   if (wait_flags) {
      ctx->flags |= wait_flags;
      ctx->emit_cache_flush(ctx);
   }
   ctx->gfx_last_ib_is_busy = (wait_flags & wait_ps_cs) != wait_ps_cs;

   if (ctx->current_saved_cs) {
      si_trace_emit(ctx);

      /* Save the IB for debug contexts. */
      si_save_cs(ws, cs, &ctx->current_saved_cs->gfx, true);
      ctx->current_saved_cs->flushed = true;
      ctx->current_saved_cs->time_flush = os_time_get_nano();

      si_log_hw_flush(ctx);
   }

   if (si_compute_prim_discard_enabled(ctx)) {
      /* The compute IB can start after the previous gfx IB starts. */
      if (radeon_emitted(ctx->prim_discard_compute_cs, 0) && ctx->last_gfx_fence) {
         ctx->ws->cs_add_fence_dependency(
            ctx->gfx_cs, ctx->last_gfx_fence,
            RADEON_DEPENDENCY_PARALLEL_COMPUTE_ONLY | RADEON_DEPENDENCY_START_FENCE);
      }

      /* Remember the last execution barrier. It's in the IB.
       * It will signal the start of the next compute IB.
       */
      if (flags & RADEON_FLUSH_START_NEXT_GFX_IB_NOW && ctx->last_pkt3_write_data) {
         *ctx->last_pkt3_write_data = PKT3(PKT3_WRITE_DATA, 3, 0);
         ctx->last_pkt3_write_data = NULL;

         si_resource_reference(&ctx->last_ib_barrier_buf, ctx->barrier_buf);
         ctx->last_ib_barrier_buf_offset = ctx->barrier_buf_offset;
         si_resource_reference(&ctx->barrier_buf, NULL);

         ws->fence_reference(&ctx->last_ib_barrier_fence, NULL);
      }
   }

   /* Flush the CS. */
   ws->cs_flush(cs, flags, &ctx->last_gfx_fence);
   if (fence)
      ws->fence_reference(fence, ctx->last_gfx_fence);

   ctx->num_gfx_cs_flushes++;

   if (si_compute_prim_discard_enabled(ctx)) {
      /* Remember the last execution barrier, which is the last fence
       * in this case.
       */
      if (!(flags & RADEON_FLUSH_START_NEXT_GFX_IB_NOW)) {
         ctx->last_pkt3_write_data = NULL;
         si_resource_reference(&ctx->last_ib_barrier_buf, NULL);
         ws->fence_reference(&ctx->last_ib_barrier_fence, ctx->last_gfx_fence);
      }
   }

   /* Check VM faults if needed. */
   if (ctx->screen->debug_flags & DBG(CHECK_VM)) {
      /* Use conservative timeout 800ms, after which we won't wait any
       * longer and assume the GPU is hung.
       */
      ctx->ws->fence_wait(ctx->ws, ctx->last_gfx_fence, 800 * 1000 * 1000);

      si_check_vm_faults(ctx, &ctx->current_saved_cs->gfx, RING_GFX);
   }

   if (ctx->current_saved_cs)
      si_saved_cs_reference(&ctx->current_saved_cs, NULL);

   si_begin_new_gfx_cs(ctx);
   ctx->gfx_flush_in_progress = false;
}

static void si_begin_gfx_cs_debug(struct si_context *ctx)
{
   static const uint32_t zeros[1];
   assert(!ctx->current_saved_cs);

   ctx->current_saved_cs = calloc(1, sizeof(*ctx->current_saved_cs));
   if (!ctx->current_saved_cs)
      return;

   pipe_reference_init(&ctx->current_saved_cs->reference, 1);

   ctx->current_saved_cs->trace_buf =
      si_resource(pipe_buffer_create(ctx->b.screen, 0, PIPE_USAGE_STAGING, 8));
   if (!ctx->current_saved_cs->trace_buf) {
      free(ctx->current_saved_cs);
      ctx->current_saved_cs = NULL;
      return;
   }

   pipe_buffer_write_nooverlap(&ctx->b, &ctx->current_saved_cs->trace_buf->b.b, 0, sizeof(zeros),
                               zeros);
   ctx->current_saved_cs->trace_id = 0;

   si_trace_emit(ctx);

   radeon_add_to_buffer_list(ctx, ctx->gfx_cs, ctx->current_saved_cs->trace_buf,
                             RADEON_USAGE_READWRITE, RADEON_PRIO_TRACE);
}

static void si_add_gds_to_buffer_list(struct si_context *sctx)
{
   if (sctx->gds) {
      sctx->ws->cs_add_buffer(sctx->gfx_cs, sctx->gds, RADEON_USAGE_READWRITE, 0, 0);
      if (sctx->gds_oa) {
         sctx->ws->cs_add_buffer(sctx->gfx_cs, sctx->gds_oa, RADEON_USAGE_READWRITE, 0, 0);
      }
   }
}

void si_allocate_gds(struct si_context *sctx)
{
   struct radeon_winsys *ws = sctx->ws;

   if (sctx->gds)
      return;

   assert(sctx->screen->use_ngg_streamout);

   /* 4 streamout GDS counters.
    * We need 256B (64 dw) of GDS, otherwise streamout hangs.
    */
   sctx->gds = ws->buffer_create(ws, 256, 4, RADEON_DOMAIN_GDS, 0);
   sctx->gds_oa = ws->buffer_create(ws, 4, 1, RADEON_DOMAIN_OA, 0);

   assert(sctx->gds && sctx->gds_oa);
   si_add_gds_to_buffer_list(sctx);
}

void si_begin_new_gfx_cs(struct si_context *ctx)
{
   if (ctx->is_debug)
      si_begin_gfx_cs_debug(ctx);

   si_add_gds_to_buffer_list(ctx);

   /* Always invalidate caches at the beginning of IBs, because external
    * users (e.g. BO evictions and SDMA/UVD/VCE IBs) can modify our
    * buffers.
    *
    * Note that the cache flush done by the kernel at the end of GFX IBs
    * isn't useful here, because that flush can finish after the following
    * IB starts drawing.
    *
    * TODO: Do we also need to invalidate CB & DB caches?
    */
   ctx->flags |= SI_CONTEXT_INV_ICACHE | SI_CONTEXT_INV_SCACHE | SI_CONTEXT_INV_VCACHE |
                 SI_CONTEXT_INV_L2 | SI_CONTEXT_START_PIPELINE_STATS;

   ctx->cs_shader_state.initialized = false;
   si_all_descriptors_begin_new_cs(ctx);

   if (!ctx->has_graphics) {
      ctx->initial_gfx_cs_size = ctx->gfx_cs->current.cdw;
      return;
   }

   /* set all valid group as dirty so they get reemited on
    * next draw command
    */
   si_pm4_reset_emitted(ctx);

   /* The CS initialization should be emitted before everything else. */
   si_pm4_emit(ctx, ctx->init_config);
   if (ctx->init_config_gs_rings)
      si_pm4_emit(ctx, ctx->init_config_gs_rings);

   if (ctx->queued.named.ls)
      ctx->prefetch_L2_mask |= SI_PREFETCH_LS;
   if (ctx->queued.named.hs)
      ctx->prefetch_L2_mask |= SI_PREFETCH_HS;
   if (ctx->queued.named.es)
      ctx->prefetch_L2_mask |= SI_PREFETCH_ES;
   if (ctx->queued.named.gs)
      ctx->prefetch_L2_mask |= SI_PREFETCH_GS;
   if (ctx->queued.named.vs)
      ctx->prefetch_L2_mask |= SI_PREFETCH_VS;
   if (ctx->queued.named.ps)
      ctx->prefetch_L2_mask |= SI_PREFETCH_PS;
   if (ctx->vb_descriptors_buffer && ctx->vertex_elements)
      ctx->prefetch_L2_mask |= SI_PREFETCH_VBO_DESCRIPTORS;

   /* CLEAR_STATE disables all colorbuffers, so only enable bound ones. */
   bool has_clear_state = ctx->screen->info.has_clear_state;
   if (has_clear_state) {
      ctx->framebuffer.dirty_cbufs = u_bit_consecutive(0, ctx->framebuffer.state.nr_cbufs);
      /* CLEAR_STATE disables the zbuffer, so only enable it if it's bound. */
      ctx->framebuffer.dirty_zsbuf = ctx->framebuffer.state.zsbuf != NULL;
   } else {
      ctx->framebuffer.dirty_cbufs = u_bit_consecutive(0, 8);
      ctx->framebuffer.dirty_zsbuf = true;
   }
   /* This should always be marked as dirty to set the framebuffer scissor
    * at least. */
   si_mark_atom_dirty(ctx, &ctx->atoms.s.framebuffer);

   si_mark_atom_dirty(ctx, &ctx->atoms.s.clip_regs);
   /* CLEAR_STATE sets zeros. */
   if (!has_clear_state || ctx->clip_state.any_nonzeros)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.clip_state);
   ctx->sample_locs_num_samples = 0;
   si_mark_atom_dirty(ctx, &ctx->atoms.s.msaa_sample_locs);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.msaa_config);
   /* CLEAR_STATE sets 0xffff. */
   if (!has_clear_state || ctx->sample_mask != 0xffff)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.sample_mask);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.cb_render_state);
   /* CLEAR_STATE sets zeros. */
   if (!has_clear_state || ctx->blend_color.any_nonzeros)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.blend_color);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.db_render_state);
   if (ctx->chip_class >= GFX9)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.dpbb_state);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.stencil_ref);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.spi_map);
   if (!ctx->screen->use_ngg_streamout)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.streamout_enable);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.render_cond);
   /* CLEAR_STATE disables all window rectangles. */
   if (!has_clear_state || ctx->num_window_rectangles > 0)
      si_mark_atom_dirty(ctx, &ctx->atoms.s.window_rectangles);

   si_mark_atom_dirty(ctx, &ctx->atoms.s.guardband);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.scissors);
   si_mark_atom_dirty(ctx, &ctx->atoms.s.viewports);

   si_mark_atom_dirty(ctx, &ctx->atoms.s.scratch_state);
   if (ctx->scratch_buffer) {
      si_context_add_resource_size(ctx, &ctx->scratch_buffer->b.b);
   }

   if (ctx->streamout.suspended) {
      ctx->streamout.append_bitmask = ctx->streamout.enabled_mask;
      si_streamout_buffers_dirty(ctx);
   }

   if (!list_is_empty(&ctx->active_queries))
      si_resume_queries(ctx);

   assert(!ctx->gfx_cs->prev_dw);
   ctx->initial_gfx_cs_size = ctx->gfx_cs->current.cdw;

   /* Invalidate various draw states so that they are emitted before
    * the first draw call. */
   si_invalidate_draw_sh_constants(ctx);
   ctx->last_index_size = -1;
   ctx->last_primitive_restart_en = -1;
   ctx->last_restart_index = SI_RESTART_INDEX_UNKNOWN;
   ctx->last_prim = -1;
   ctx->last_multi_vgt_param = -1;
   ctx->last_vs_state = ~0;
   ctx->last_ls = NULL;
   ctx->last_tcs = NULL;
   ctx->last_tes_sh_base = -1;
   ctx->last_num_tcs_input_cp = -1;
   ctx->last_ls_hs_config = -1; /* impossible value */
   ctx->last_binning_enabled = -1;
   ctx->small_prim_cull_info_dirty = ctx->small_prim_cull_info_buf != NULL;

   ctx->prim_discard_compute_ib_initialized = false;

   /* Compute-based primitive discard:
    *   The index ring is divided into 2 halves. Switch between the halves
    *   in the same fashion as doublebuffering.
    */
   if (ctx->index_ring_base)
      ctx->index_ring_base = 0;
   else
      ctx->index_ring_base = ctx->index_ring_size_per_ib;

   ctx->index_ring_offset = 0;

   STATIC_ASSERT(SI_NUM_TRACKED_REGS <= sizeof(ctx->tracked_regs.reg_saved) * 8);

   if (has_clear_state) {
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_RENDER_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_COUNT_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_RENDER_OVERRIDE2] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_SHADER_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_CB_TARGET_MASK] = 0xffffffff;
      ctx->tracked_regs.reg_value[SI_TRACKED_CB_DCC_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SX_PS_DOWNCONVERT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SX_BLEND_OPT_EPSILON] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SX_BLEND_OPT_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_LINE_CNTL] = 0x00001000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_AA_CONFIG] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_EQAA] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_MODE_CNTL_1] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SU_PRIM_FILTER_CNTL] = 0;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SU_SMALL_PRIM_FILTER_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_VS_OUT_CNTL__VS] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_VS_OUT_CNTL__CL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_CLIP_CNTL] = 0x00090000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_BINNER_CNTL_0] = 0x00000003;
      ctx->tracked_regs.reg_value[SI_TRACKED_DB_DFSM_CONTROL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_GB_VERT_CLIP_ADJ] = 0x3f800000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_GB_VERT_DISC_ADJ] = 0x3f800000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_GB_HORZ_CLIP_ADJ] = 0x3f800000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_GB_HORZ_DISC_ADJ] = 0x3f800000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SU_HARDWARE_SCREEN_OFFSET] = 0;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SU_VTX_CNTL] = 0x00000005;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_CLIPRECT_RULE] = 0xffff;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_SC_LINE_STIPPLE] = 0;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_ESGS_RING_ITEMSIZE] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GSVS_RING_OFFSET_1] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GSVS_RING_OFFSET_2] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GSVS_RING_OFFSET_3] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GSVS_RING_ITEMSIZE] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_MAX_VERT_OUT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_VERT_ITEMSIZE] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_VERT_ITEMSIZE_1] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_VERT_ITEMSIZE_2] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_VERT_ITEMSIZE_3] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_INSTANCE_CNT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_ONCHIP_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_MAX_PRIMS_PER_SUBGROUP] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_GS_MODE] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_PRIMITIVEID_EN] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_REUSE_OFF] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_VS_OUT_CONFIG] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_GE_MAX_OUTPUT_PER_SUBGROUP] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_GE_NGG_SUBGRP_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_SHADER_IDX_FORMAT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_SHADER_POS_FORMAT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_VTE_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_PA_CL_NGG_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_PS_INPUT_ENA] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_PS_INPUT_ADDR] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_BARYC_CNTL] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_PS_IN_CONTROL] = 0x00000002;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_SHADER_Z_FORMAT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_SPI_SHADER_COL_FORMAT] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_CB_SHADER_MASK] = 0xffffffff;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_TF_PARAM] = 0x00000000;
      ctx->tracked_regs.reg_value[SI_TRACKED_VGT_VERTEX_REUSE_BLOCK_CNTL] =
         0x0000001e; /* From GFX8 */

      /* Set all cleared context registers to saved. */
      ctx->tracked_regs.reg_saved = ~(1ull << SI_TRACKED_GE_PC_ALLOC); /* uconfig reg */
      ctx->last_gs_out_prim = 0;                                       /* cleared by CLEAR_STATE */
   } else {
      /* Set all register values to unknown. */
      ctx->tracked_regs.reg_saved = 0;
      ctx->last_gs_out_prim = -1; /* unknown */
   }

   /* 0xffffffff is a impossible value to register SPI_PS_INPUT_CNTL_n */
   memset(ctx->tracked_regs.spi_ps_input_cntl, 0xff, sizeof(uint32_t) * 32);
}