radeonsi: enable preemption if the kernel enabled it
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5798>
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@ -502,6 +502,8 @@ bool ac_query_gpu_info(int fd, void *dev_p,
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info->has_2d_tiling = true;
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info->has_read_registers_query = true;
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info->has_scheduled_fence_dependency = info->drm_minor >= 28;
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info->mid_command_buffer_preemption_enabled =
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amdinfo->ids_flags & AMDGPU_IDS_FLAGS_PREEMPTION;
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info->pa_sc_tile_steering_override = device_info.pa_sc_tile_steering_override;
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info->num_render_backends = amdinfo->rb_pipes;
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@ -939,6 +941,7 @@ void ac_print_gpu_info(struct radeon_info *info)
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printf(" has_read_registers_query = %u\n", info->has_read_registers_query);
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printf(" has_gds_ordered_append = %u\n", info->has_gds_ordered_append);
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printf(" has_scheduled_fence_dependency = %u\n", info->has_scheduled_fence_dependency);
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printf(" mid_command_buffer_preemption_enabled = %u\n", info->mid_command_buffer_preemption_enabled);
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printf("Shader core info:\n");
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printf(" max_shader_clock = %i\n", info->max_shader_clock);
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@ -152,6 +152,8 @@ struct radeon_info {
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bool has_read_registers_query;
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bool has_gds_ordered_append;
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bool has_scheduled_fence_dependency;
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/* Whether SR-IOV is enabled or amdgpu.mcbp=1 was set on the kernel command line. */
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bool mid_command_buffer_preemption_enabled;
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/* Shader cores. */
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uint32_t cu_mask[4][2];
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@ -146,7 +146,8 @@ si_create_shadowing_ib_preamble(struct si_context *sctx)
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void si_init_cp_reg_shadowing(struct si_context *sctx)
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{
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if (sctx->screen->debug_flags & DBG(SHADOW_REGS)) {
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if (sctx->screen->info.mid_command_buffer_preemption_enabled ||
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sctx->screen->debug_flags & DBG(SHADOW_REGS)) {
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sctx->shadowed_regs =
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si_aligned_buffer_create(sctx->b.screen,
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SI_RESOURCE_FLAG_UNMAPPABLE,
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