radeonsi: don't use CLEAR_STATE on SI

This fixes random hangs with Unigine Valley.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102201

Fixes: 064550238ef0 ("radeonsi: use CLEAR_STATE to initialize some registers")
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_hw_context.c b/src/gallium/drivers/radeonsi/si_hw_context.c
index 3582cd7..46e6073 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_hw_context.c
+++ b/src/gallium/drivers/radeonsi/si_hw_context.c
@@ -232,27 +232,33 @@ void si_begin_new_cs(struct si_context *ctx)
                ctx->prefetch_L2_mask |= SI_PREFETCH_VBO_DESCRIPTORS;
 
        /* CLEAR_STATE disables all colorbuffers, so only enable bound ones. */
-       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;
+       bool has_clear_state = ctx->screen->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->framebuffer.atom);
 
        si_mark_atom_dirty(ctx, &ctx->clip_regs);
        /* CLEAR_STATE sets zeros. */
-       if (ctx->clip_state.any_nonzeros)
+       if (!has_clear_state || ctx->clip_state.any_nonzeros)
                si_mark_atom_dirty(ctx, &ctx->clip_state.atom);
        ctx->msaa_sample_locs.nr_samples = 0;
        si_mark_atom_dirty(ctx, &ctx->msaa_sample_locs.atom);
        si_mark_atom_dirty(ctx, &ctx->msaa_config);
        /* CLEAR_STATE sets 0xffff. */
-       if (ctx->sample_mask.sample_mask != 0xffff)
+       if (!has_clear_state || ctx->sample_mask.sample_mask != 0xffff)
                si_mark_atom_dirty(ctx, &ctx->sample_mask.atom);
        si_mark_atom_dirty(ctx, &ctx->cb_render_state);
        /* CLEAR_STATE sets zeros. */
-       if (ctx->blend_color.any_nonzeros)
+       if (!has_clear_state || ctx->blend_color.any_nonzeros)
                si_mark_atom_dirty(ctx, &ctx->blend_color.atom);
        si_mark_atom_dirty(ctx, &ctx->db_render_state);
        si_mark_atom_dirty(ctx, &ctx->stencil_ref.atom);

diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c
index cac1d01..80a77a8 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -1067,6 +1067,10 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
        sscreen->tess_offchip_block_dw_size =
                sscreen->b.family == CHIP_HAWAII ? 4096 : 8192;
 
+       /* The mere presense of CLEAR_STATE in the IB causes random GPU hangs
+        * on SI. */
+       sscreen->has_clear_state = sscreen->b.chip_class >= CIK;
+
        sscreen->has_distributed_tess =
                sscreen->b.chip_class >= VI &&
                sscreen->b.info.max_se >= 2;

diff --git a/src/gallium/drivers/radeonsi/si_pipe.h b/src/gallium/drivers/radeonsi/si_pipe.h
index ee0ab1b..8d82287 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_pipe.h
+++ b/src/gallium/drivers/radeonsi/si_pipe.h
@@ -87,6 +87,7 @@ struct si_screen {
        struct r600_common_screen       b;
        unsigned                        gs_table_depth;
        unsigned                        tess_offchip_block_dw_size;
+       bool                            has_clear_state;
        bool                            has_distributed_tess;
        bool                            has_draw_indirect_multi;
        bool                            has_ds_bpermute;

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 2c413a4..8010df6 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -4424,8 +4424,12 @@ static void si_init_config(struct si_context *sctx)
        unsigned rb_mask = sctx->screen->b.info.enabled_rb_mask;
        unsigned raster_config, raster_config_1;
        uint64_t border_color_va = sctx->border_color_buffer->gpu_address;
+       bool has_clear_state = sscreen->has_clear_state;
        struct si_pm4_state *pm4 = CALLOC_STRUCT(si_pm4_state);
 
+       /* Only SI can disable CLEAR_STATE for now. */
+       assert(has_clear_state || sscreen->b.chip_class == SI);
+
        if (!pm4)
                return;
 
@@ -4434,11 +4438,15 @@ static void si_init_config(struct si_context *sctx)
        si_pm4_cmd_add(pm4, CONTEXT_CONTROL_SHADOW_ENABLE(1));
        si_pm4_cmd_end(pm4, false);
 
-       si_pm4_cmd_begin(pm4, PKT3_CLEAR_STATE);
-       si_pm4_cmd_add(pm4, 0);
-       si_pm4_cmd_end(pm4, false);
+       if (has_clear_state) {
+               si_pm4_cmd_begin(pm4, PKT3_CLEAR_STATE);
+               si_pm4_cmd_add(pm4, 0);
+               si_pm4_cmd_end(pm4, false);
+       }
 
        si_pm4_set_reg(pm4, R_028A18_VGT_HOS_MAX_TESS_LEVEL, fui(64));
+       if (!has_clear_state)
+               si_pm4_set_reg(pm4, R_028A1C_VGT_HOS_MIN_TESS_LEVEL, fui(0));
 
        /* FIXME calculate these values somehow ??? */
        if (sctx->b.chip_class <= VI) {
@@ -4446,7 +4454,15 @@ static void si_init_config(struct si_context *sctx)
                si_pm4_set_reg(pm4, R_028A58_VGT_ES_PER_GS, 0x40);
        }
 
+       if (!has_clear_state) {
+               si_pm4_set_reg(pm4, R_028A5C_VGT_GS_PER_VS, 0x2);
+               si_pm4_set_reg(pm4, R_028A8C_VGT_PRIMITIVEID_RESET, 0x0);
+               si_pm4_set_reg(pm4, R_028B98_VGT_STRMOUT_BUFFER_CONFIG, 0x0);
+       }
+
        si_pm4_set_reg(pm4, R_028AA0_VGT_INSTANCE_STEP_RATE_0, 1);
+       if (!has_clear_state)
+               si_pm4_set_reg(pm4, R_028AB8_VGT_VTX_CNT_EN, 0x0);
        if (sctx->b.chip_class < CIK)
                si_pm4_set_reg(pm4, R_008A14_PA_CL_ENHANCE, S_008A14_NUM_CLIP_SEQ(3) |
                               S_008A14_CLIP_VTX_REORDER_ENA(1));
@@ -4454,6 +4470,9 @@ static void si_init_config(struct si_context *sctx)
        si_pm4_set_reg(pm4, R_028BD4_PA_SC_CENTROID_PRIORITY_0, 0x76543210);
        si_pm4_set_reg(pm4, R_028BD8_PA_SC_CENTROID_PRIORITY_1, 0xfedcba98);
 
+       if (!has_clear_state)
+               si_pm4_set_reg(pm4, R_02882C_PA_SU_PRIM_FILTER_CNTL, 0);
+
        switch (sctx->screen->b.family) {
        case CHIP_TAHITI:
        case CHIP_PITCAIRN:
@@ -4564,6 +4583,26 @@ static void si_init_config(struct si_context *sctx)
                               S_028034_BR_X(16384) | S_028034_BR_Y(16384));
        }
 
+       if (!has_clear_state) {
+               si_pm4_set_reg(pm4, R_02820C_PA_SC_CLIPRECT_RULE, 0xFFFF);
+               si_pm4_set_reg(pm4, R_028230_PA_SC_EDGERULE,
+                              S_028230_ER_TRI(0xA) |
+                              S_028230_ER_POINT(0xA) |
+                              S_028230_ER_RECT(0xA) |
+                              /* Required by DX10_DIAMOND_TEST_ENA: */
+                              S_028230_ER_LINE_LR(0x1A) |
+                              S_028230_ER_LINE_RL(0x26) |
+                              S_028230_ER_LINE_TB(0xA) |
+                              S_028230_ER_LINE_BT(0xA));
+               /* PA_SU_HARDWARE_SCREEN_OFFSET must be 0 due to hw bug on SI */
+               si_pm4_set_reg(pm4, R_028234_PA_SU_HARDWARE_SCREEN_OFFSET, 0);
+               si_pm4_set_reg(pm4, R_028820_PA_CL_NANINF_CNTL, 0);
+               si_pm4_set_reg(pm4, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 0x0);
+               si_pm4_set_reg(pm4, R_028AC4_DB_SRESULTS_COMPARE_STATE1, 0x0);
+               si_pm4_set_reg(pm4, R_028AC8_DB_PRELOAD_CONTROL, 0x0);
+               si_pm4_set_reg(pm4, R_02800C_DB_RENDER_OVERRIDE, 0);
+       }
+
        if (sctx->b.chip_class >= GFX9) {
                si_pm4_set_reg(pm4, R_030920_VGT_MAX_VTX_INDX, ~0);
                si_pm4_set_reg(pm4, R_030924_VGT_MIN_VTX_INDX, 0);
@@ -4640,6 +4679,9 @@ static void si_init_config(struct si_context *sctx)
                        vgt_tess_distribution |= S_028B50_TRAP_SPLIT(3);
 
                si_pm4_set_reg(pm4, R_028B50_VGT_TESS_DISTRIBUTION, vgt_tess_distribution);
+       } else if (!has_clear_state) {
+               si_pm4_set_reg(pm4, R_028C58_VGT_VERTEX_REUSE_BLOCK_CNTL, 14);
+               si_pm4_set_reg(pm4, R_028C5C_VGT_OUT_DEALLOC_CNTL, 16);
        }
 
        si_pm4_set_reg(pm4, R_028080_TA_BC_BASE_ADDR, border_color_va >> 8);