radeonsi: cull primitives with async compute for large draw calls

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

/*
 * Copyright 2015 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_pipe.h"
#include "si_compute.h"
#include "sid.h"
#include "gfx9d.h"
#include "sid_tables.h"
#include "driver_ddebug/dd_util.h"
#include "util/u_dump.h"
#include "util/u_log.h"
#include "util/u_memory.h"
#include "util/u_string.h"
#include "ac_debug.h"

static void si_dump_bo_list(struct si_context *sctx,
                            const struct radeon_saved_cs *saved, FILE *f);

DEBUG_GET_ONCE_OPTION(replace_shaders, "RADEON_REPLACE_SHADERS", NULL)

/**
 * Store a linearized copy of all chunks of \p cs together with the buffer
 * list in \p saved.
 */
void si_save_cs(struct radeon_winsys *ws, struct radeon_cmdbuf *cs,
                struct radeon_saved_cs *saved, bool get_buffer_list)
{
        uint32_t *buf;
        unsigned i;

        /* Save the IB chunks. */
        saved->num_dw = cs->prev_dw + cs->current.cdw;
        saved->ib = MALLOC(4 * saved->num_dw);
        if (!saved->ib)
                goto oom;

        buf = saved->ib;
        for (i = 0; i < cs->num_prev; ++i) {
                memcpy(buf, cs->prev[i].buf, cs->prev[i].cdw * 4);
                buf += cs->prev[i].cdw;
        }
        memcpy(buf, cs->current.buf, cs->current.cdw * 4);

        if (!get_buffer_list)
                return;

        /* Save the buffer list. */
        saved->bo_count = ws->cs_get_buffer_list(cs, NULL);
        saved->bo_list = CALLOC(saved->bo_count,
                                sizeof(saved->bo_list[0]));
        if (!saved->bo_list) {
                FREE(saved->ib);
                goto oom;
        }
        ws->cs_get_buffer_list(cs, saved->bo_list);

        return;

oom:
        fprintf(stderr, "%s: out of memory\n", __func__);
        memset(saved, 0, sizeof(*saved));
}

void si_clear_saved_cs(struct radeon_saved_cs *saved)
{
        FREE(saved->ib);
        FREE(saved->bo_list);

        memset(saved, 0, sizeof(*saved));
}

void si_destroy_saved_cs(struct si_saved_cs *scs)
{
        si_clear_saved_cs(&scs->gfx);
        si_resource_reference(&scs->trace_buf, NULL);
        free(scs);
}

static void si_dump_shader(struct si_screen *sscreen,
                           enum pipe_shader_type processor,
                           const struct si_shader *shader, FILE *f)
{
        if (shader->shader_log)
                fwrite(shader->shader_log, shader->shader_log_size, 1, f);
        else
                si_shader_dump(sscreen, shader, NULL, processor, f, false);
}

struct si_log_chunk_shader {
        /* The shader destroy code assumes a current context for unlinking of
         * PM4 packets etc.
         *
         * While we should be able to destroy shaders without a context, doing
         * so would happen only very rarely and be therefore likely to fail
         * just when you're trying to debug something. Let's just remember the
         * current context in the chunk.
         */
        struct si_context *ctx;
        struct si_shader *shader;
        enum pipe_shader_type processor;

        /* For keep-alive reference counts */
        struct si_shader_selector *sel;
        struct si_compute *program;
};

static void
si_log_chunk_shader_destroy(void *data)
{
        struct si_log_chunk_shader *chunk = data;
        si_shader_selector_reference(chunk->ctx, &chunk->sel, NULL);
        si_compute_reference(&chunk->program, NULL);
        FREE(chunk);
}

static void
si_log_chunk_shader_print(void *data, FILE *f)
{
        struct si_log_chunk_shader *chunk = data;
        struct si_screen *sscreen = chunk->ctx->screen;
        si_dump_shader(sscreen, chunk->processor,
                       chunk->shader, f);
}

static struct u_log_chunk_type si_log_chunk_type_shader = {
        .destroy = si_log_chunk_shader_destroy,
        .print = si_log_chunk_shader_print,
};

static void si_dump_gfx_shader(struct si_context *ctx,
                               const struct si_shader_ctx_state *state,
                               struct u_log_context *log)
{
        struct si_shader *current = state->current;

        if (!state->cso || !current)
                return;

        struct si_log_chunk_shader *chunk = CALLOC_STRUCT(si_log_chunk_shader);
        chunk->ctx = ctx;
        chunk->processor = state->cso->info.processor;
        chunk->shader = current;
        si_shader_selector_reference(ctx, &chunk->sel, current->selector);
        u_log_chunk(log, &si_log_chunk_type_shader, chunk);
}

static void si_dump_compute_shader(struct si_context *ctx,
                                   struct u_log_context *log)
{
        const struct si_cs_shader_state *state = &ctx->cs_shader_state;

        if (!state->program)
                return;

        struct si_log_chunk_shader *chunk = CALLOC_STRUCT(si_log_chunk_shader);
        chunk->ctx = ctx;
        chunk->processor = PIPE_SHADER_COMPUTE;
        chunk->shader = &state->program->shader;
        si_compute_reference(&chunk->program, state->program);
        u_log_chunk(log, &si_log_chunk_type_shader, chunk);
}

/**
 * Shader compiles can be overridden with arbitrary ELF objects by setting
 * the environment variable RADEON_REPLACE_SHADERS=num1:filename1[;num2:filename2]
 */
bool si_replace_shader(unsigned num, struct ac_shader_binary *binary)
{
        const char *p = debug_get_option_replace_shaders();
        const char *semicolon;
        char *copy = NULL;
        FILE *f;
        long filesize, nread;
        char *buf = NULL;
        bool replaced = false;

        if (!p)
                return false;

        while (*p) {
                unsigned long i;
                char *endp;
                i = strtoul(p, &endp, 0);

                p = endp;
                if (*p != ':') {
                        fprintf(stderr, "RADEON_REPLACE_SHADERS formatted badly.\n");
                        exit(1);
                }
                ++p;

                if (i == num)
                        break;

                p = strchr(p, ';');
                if (!p)
                        return false;
                ++p;
        }
        if (!*p)
                return false;

        semicolon = strchr(p, ';');
        if (semicolon) {
                p = copy = strndup(p, semicolon - p);
                if (!copy) {
                        fprintf(stderr, "out of memory\n");
                        return false;
                }
        }

        fprintf(stderr, "radeonsi: replace shader %u by %s\n", num, p);

        f = fopen(p, "r");
        if (!f) {
                perror("radeonsi: failed to open file");
                goto out_free;
        }

        if (fseek(f, 0, SEEK_END) != 0)
                goto file_error;

        filesize = ftell(f);
        if (filesize < 0)
                goto file_error;

        if (fseek(f, 0, SEEK_SET) != 0)
                goto file_error;

        buf = MALLOC(filesize);
        if (!buf) {
                fprintf(stderr, "out of memory\n");
                goto out_close;
        }

        nread = fread(buf, 1, filesize, f);
        if (nread != filesize)
                goto file_error;

        ac_elf_read(buf, filesize, binary);
        replaced = true;

out_close:
        fclose(f);
out_free:
        FREE(buf);
        free(copy);
        return replaced;

file_error:
        perror("radeonsi: reading shader");
        goto out_close;
}

/* Parsed IBs are difficult to read without colors. Use "less -R file" to
 * read them, or use "aha -b -f file" to convert them to html.
 */
#define COLOR_RESET     "\033[0m"
#define COLOR_RED       "\033[31m"
#define COLOR_GREEN     "\033[1;32m"
#define COLOR_YELLOW    "\033[1;33m"
#define COLOR_CYAN      "\033[1;36m"

static void si_dump_mmapped_reg(struct si_context *sctx, FILE *f,
                                unsigned offset)
{
        struct radeon_winsys *ws = sctx->ws;
        uint32_t value;

        if (ws->read_registers(ws, offset, 1, &value))
                ac_dump_reg(f, sctx->chip_class, offset, value, ~0);
}

static void si_dump_debug_registers(struct si_context *sctx, FILE *f)
{
        if (!sctx->screen->info.has_read_registers_query)
                return;

        fprintf(f, "Memory-mapped registers:\n");
        si_dump_mmapped_reg(sctx, f, R_008010_GRBM_STATUS);

        /* No other registers can be read on DRM < 3.1.0. */
        if (sctx->screen->info.drm_major < 3 ||
            sctx->screen->info.drm_minor < 1) {
                fprintf(f, "\n");
                return;
        }

        si_dump_mmapped_reg(sctx, f, R_008008_GRBM_STATUS2);
        si_dump_mmapped_reg(sctx, f, R_008014_GRBM_STATUS_SE0);
        si_dump_mmapped_reg(sctx, f, R_008018_GRBM_STATUS_SE1);
        si_dump_mmapped_reg(sctx, f, R_008038_GRBM_STATUS_SE2);
        si_dump_mmapped_reg(sctx, f, R_00803C_GRBM_STATUS_SE3);
        si_dump_mmapped_reg(sctx, f, R_00D034_SDMA0_STATUS_REG);
        si_dump_mmapped_reg(sctx, f, R_00D834_SDMA1_STATUS_REG);
        if (sctx->chip_class <= GFX8) {
                si_dump_mmapped_reg(sctx, f, R_000E50_SRBM_STATUS);
                si_dump_mmapped_reg(sctx, f, R_000E4C_SRBM_STATUS2);
                si_dump_mmapped_reg(sctx, f, R_000E54_SRBM_STATUS3);
        }
        si_dump_mmapped_reg(sctx, f, R_008680_CP_STAT);
        si_dump_mmapped_reg(sctx, f, R_008674_CP_STALLED_STAT1);
        si_dump_mmapped_reg(sctx, f, R_008678_CP_STALLED_STAT2);
        si_dump_mmapped_reg(sctx, f, R_008670_CP_STALLED_STAT3);
        si_dump_mmapped_reg(sctx, f, R_008210_CP_CPC_STATUS);
        si_dump_mmapped_reg(sctx, f, R_008214_CP_CPC_BUSY_STAT);
        si_dump_mmapped_reg(sctx, f, R_008218_CP_CPC_STALLED_STAT1);
        si_dump_mmapped_reg(sctx, f, R_00821C_CP_CPF_STATUS);
        si_dump_mmapped_reg(sctx, f, R_008220_CP_CPF_BUSY_STAT);
        si_dump_mmapped_reg(sctx, f, R_008224_CP_CPF_STALLED_STAT1);
        fprintf(f, "\n");
}

struct si_log_chunk_cs {
        struct si_context *ctx;
        struct si_saved_cs *cs;
        bool dump_bo_list;
        unsigned gfx_begin, gfx_end;
        unsigned compute_begin, compute_end;
};

static void si_log_chunk_type_cs_destroy(void *data)
{
        struct si_log_chunk_cs *chunk = data;
        si_saved_cs_reference(&chunk->cs, NULL);
        free(chunk);
}

static void si_parse_current_ib(FILE *f, struct radeon_cmdbuf *cs,
                                unsigned begin, unsigned end,
                                int *last_trace_id, unsigned trace_id_count,
                                const char *name, enum chip_class chip_class)
{
        unsigned orig_end = end;

        assert(begin <= end);

        fprintf(f, "------------------ %s begin (dw = %u) ------------------\n",
                name, begin);

        for (unsigned prev_idx = 0; prev_idx < cs->num_prev; ++prev_idx) {
                struct radeon_cmdbuf_chunk *chunk = &cs->prev[prev_idx];

                if (begin < chunk->cdw) {
                        ac_parse_ib_chunk(f, chunk->buf + begin,
                                          MIN2(end, chunk->cdw) - begin,
                                          last_trace_id, trace_id_count,
                                          chip_class, NULL, NULL);
                }

                if (end <= chunk->cdw)
                        return;

                if (begin < chunk->cdw)
                        fprintf(f, "\n---------- Next %s Chunk ----------\n\n",
                                name);

                begin -= MIN2(begin, chunk->cdw);
                end -= chunk->cdw;
        }

        assert(end <= cs->current.cdw);

        ac_parse_ib_chunk(f, cs->current.buf + begin, end - begin, last_trace_id,
                          trace_id_count, chip_class, NULL, NULL);

        fprintf(f, "------------------- %s end (dw = %u) -------------------\n\n",
                name, orig_end);
}

static void si_log_chunk_type_cs_print(void *data, FILE *f)
{
        struct si_log_chunk_cs *chunk = data;
        struct si_context *ctx = chunk->ctx;
        struct si_saved_cs *scs = chunk->cs;
        int last_trace_id = -1;
        int last_compute_trace_id = -1;

        /* We are expecting that the ddebug pipe has already
         * waited for the context, so this buffer should be idle.
         * If the GPU is hung, there is no point in waiting for it.
         */
        uint32_t *map = ctx->ws->buffer_map(scs->trace_buf->buf,
                                              NULL,
                                              PIPE_TRANSFER_UNSYNCHRONIZED |
                                              PIPE_TRANSFER_READ);
        if (map) {
                last_trace_id = map[0];
                last_compute_trace_id = map[1];
        }

        if (chunk->gfx_end != chunk->gfx_begin) {
                if (chunk->gfx_begin == 0) {
                        if (ctx->init_config)
                                ac_parse_ib(f, ctx->init_config->pm4, ctx->init_config->ndw,
                                            NULL, 0, "IB2: Init config", ctx->chip_class,
                                            NULL, NULL);

                        if (ctx->init_config_gs_rings)
                                ac_parse_ib(f, ctx->init_config_gs_rings->pm4,
                                            ctx->init_config_gs_rings->ndw,
                                            NULL, 0, "IB2: Init GS rings", ctx->chip_class,
                                            NULL, NULL);
                }

                if (scs->flushed) {
                        ac_parse_ib(f, scs->gfx.ib + chunk->gfx_begin,
                                    chunk->gfx_end - chunk->gfx_begin,
                                    &last_trace_id, map ? 1 : 0, "IB", ctx->chip_class,
                                    NULL, NULL);
                } else {
                        si_parse_current_ib(f, ctx->gfx_cs, chunk->gfx_begin,
                                            chunk->gfx_end, &last_trace_id, map ? 1 : 0,
                                            "IB", ctx->chip_class);
                }
        }

        if (chunk->compute_end != chunk->compute_begin) {
                assert(ctx->prim_discard_compute_cs);

                if (scs->flushed) {
                        ac_parse_ib(f, scs->compute.ib + chunk->compute_begin,
                                    chunk->compute_end - chunk->compute_begin,
                                    &last_compute_trace_id, map ? 1 : 0, "Compute IB", ctx->chip_class,
                                    NULL, NULL);
                } else {
                        si_parse_current_ib(f, ctx->prim_discard_compute_cs, chunk->compute_begin,
                                            chunk->compute_end, &last_compute_trace_id,
                                            map ? 1 : 0, "Compute IB", ctx->chip_class);
                }
        }

        if (chunk->dump_bo_list) {
                fprintf(f, "Flushing. Time: ");
                util_dump_ns(f, scs->time_flush);
                fprintf(f, "\n\n");
                si_dump_bo_list(ctx, &scs->gfx, f);
        }
}

static const struct u_log_chunk_type si_log_chunk_type_cs = {
        .destroy = si_log_chunk_type_cs_destroy,
        .print = si_log_chunk_type_cs_print,
};

static void si_log_cs(struct si_context *ctx, struct u_log_context *log,
                      bool dump_bo_list)
{
        assert(ctx->current_saved_cs);

        struct si_saved_cs *scs = ctx->current_saved_cs;
        unsigned gfx_cur = ctx->gfx_cs->prev_dw + ctx->gfx_cs->current.cdw;
        unsigned compute_cur = 0;

        if (ctx->prim_discard_compute_cs)
                compute_cur = ctx->prim_discard_compute_cs->prev_dw + ctx->prim_discard_compute_cs->current.cdw;

        if (!dump_bo_list &&
            gfx_cur == scs->gfx_last_dw &&
            compute_cur == scs->compute_last_dw)
                return;

        struct si_log_chunk_cs *chunk = calloc(1, sizeof(*chunk));

        chunk->ctx = ctx;
        si_saved_cs_reference(&chunk->cs, scs);
        chunk->dump_bo_list = dump_bo_list;

        chunk->gfx_begin = scs->gfx_last_dw;
        chunk->gfx_end = gfx_cur;
        scs->gfx_last_dw = gfx_cur;

        chunk->compute_begin = scs->compute_last_dw;
        chunk->compute_end = compute_cur;
        scs->compute_last_dw = compute_cur;

        u_log_chunk(log, &si_log_chunk_type_cs, chunk);
}

void si_auto_log_cs(void *data, struct u_log_context *log)
{
        struct si_context *ctx = (struct si_context *)data;
        si_log_cs(ctx, log, false);
}

void si_log_hw_flush(struct si_context *sctx)
{
        if (!sctx->log)
                return;

        si_log_cs(sctx, sctx->log, true);

        if (&sctx->b == sctx->screen->aux_context) {
                /* The aux context isn't captured by the ddebug wrapper,
                 * so we dump it on a flush-by-flush basis here.
                 */
                FILE *f = dd_get_debug_file(false);
                if (!f) {
                        fprintf(stderr, "radeonsi: error opening aux context dump file.\n");
                } else {
                        dd_write_header(f, &sctx->screen->b, 0);

                        fprintf(f, "Aux context dump:\n\n");
                        u_log_new_page_print(sctx->log, f);

                        fclose(f);
                }
        }
}

static const char *priority_to_string(enum radeon_bo_priority priority)
{
#define ITEM(x) [RADEON_PRIO_##x] = #x
        static const char *table[64] = {
                ITEM(FENCE),
                ITEM(TRACE),
                ITEM(SO_FILLED_SIZE),
                ITEM(QUERY),
                ITEM(IB1),
                ITEM(IB2),
                ITEM(DRAW_INDIRECT),
                ITEM(INDEX_BUFFER),
                ITEM(CP_DMA),
                ITEM(CONST_BUFFER),
                ITEM(DESCRIPTORS),
                ITEM(BORDER_COLORS),
                ITEM(SAMPLER_BUFFER),
                ITEM(VERTEX_BUFFER),
                ITEM(SHADER_RW_BUFFER),
                ITEM(COMPUTE_GLOBAL),
                ITEM(SAMPLER_TEXTURE),
                ITEM(SHADER_RW_IMAGE),
                ITEM(SAMPLER_TEXTURE_MSAA),
                ITEM(COLOR_BUFFER),
                ITEM(DEPTH_BUFFER),
                ITEM(COLOR_BUFFER_MSAA),
                ITEM(DEPTH_BUFFER_MSAA),
                ITEM(SEPARATE_META),
                ITEM(SHADER_BINARY),
                ITEM(SHADER_RINGS),
                ITEM(SCRATCH_BUFFER),
        };
#undef ITEM

        assert(priority < ARRAY_SIZE(table));
        return table[priority];
}

static int bo_list_compare_va(const struct radeon_bo_list_item *a,
                                   const struct radeon_bo_list_item *b)
{
        return a->vm_address < b->vm_address ? -1 :
               a->vm_address > b->vm_address ? 1 : 0;
}

static void si_dump_bo_list(struct si_context *sctx,
                            const struct radeon_saved_cs *saved, FILE *f)
{
        unsigned i,j;

        if (!saved->bo_list)
                return;

        /* Sort the list according to VM adddresses first. */
        qsort(saved->bo_list, saved->bo_count,
              sizeof(saved->bo_list[0]), (void*)bo_list_compare_va);

        fprintf(f, "Buffer list (in units of pages = 4kB):\n"
                COLOR_YELLOW "        Size    VM start page         "
                "VM end page           Usage" COLOR_RESET "\n");

        for (i = 0; i < saved->bo_count; i++) {
                /* Note: Buffer sizes are expected to be aligned to 4k by the winsys. */
                const unsigned page_size = sctx->screen->info.gart_page_size;
                uint64_t va = saved->bo_list[i].vm_address;
                uint64_t size = saved->bo_list[i].bo_size;
                bool hit = false;

                /* If there's unused virtual memory between 2 buffers, print it. */
                if (i) {
                        uint64_t previous_va_end = saved->bo_list[i-1].vm_address +
                                                   saved->bo_list[i-1].bo_size;

                        if (va > previous_va_end) {
                                fprintf(f, "  %10"PRIu64"    -- hole --\n",
                                        (va - previous_va_end) / page_size);
                        }
                }

                /* Print the buffer. */
                fprintf(f, "  %10"PRIu64"    0x%013"PRIX64"       0x%013"PRIX64"       ",
                        size / page_size, va / page_size, (va + size) / page_size);

                /* Print the usage. */
                for (j = 0; j < 32; j++) {
                        if (!(saved->bo_list[i].priority_usage & (1u << j)))
                                continue;

                        fprintf(f, "%s%s", !hit ? "" : ", ", priority_to_string(j));
                        hit = true;
                }
                fprintf(f, "\n");
        }
        fprintf(f, "\nNote: The holes represent memory not used by the IB.\n"
                   "      Other buffers can still be allocated there.\n\n");
}

static void si_dump_framebuffer(struct si_context *sctx, struct u_log_context *log)
{
        struct pipe_framebuffer_state *state = &sctx->framebuffer.state;
        struct si_texture *tex;
        int i;

        for (i = 0; i < state->nr_cbufs; i++) {
                if (!state->cbufs[i])
                        continue;

                tex = (struct si_texture*)state->cbufs[i]->texture;
                u_log_printf(log, COLOR_YELLOW "Color buffer %i:" COLOR_RESET "\n", i);
                si_print_texture_info(sctx->screen, tex, log);
                u_log_printf(log, "\n");
        }

        if (state->zsbuf) {
                tex = (struct si_texture*)state->zsbuf->texture;
                u_log_printf(log, COLOR_YELLOW "Depth-stencil buffer:" COLOR_RESET "\n");
                si_print_texture_info(sctx->screen, tex, log);
                u_log_printf(log, "\n");
        }
}

typedef unsigned (*slot_remap_func)(unsigned);

struct si_log_chunk_desc_list {
        /** Pointer to memory map of buffer where the list is uploader */
        uint32_t *gpu_list;
        /** Reference of buffer where the list is uploaded, so that gpu_list
         * is kept live. */
        struct si_resource *buf;

        const char *shader_name;
        const char *elem_name;
        slot_remap_func slot_remap;
        enum chip_class chip_class;
        unsigned element_dw_size;
        unsigned num_elements;

        uint32_t list[0];
};

static void
si_log_chunk_desc_list_destroy(void *data)
{
        struct si_log_chunk_desc_list *chunk = data;
        si_resource_reference(&chunk->buf, NULL);
        FREE(chunk);
}

static void
si_log_chunk_desc_list_print(void *data, FILE *f)
{
        struct si_log_chunk_desc_list *chunk = data;

        for (unsigned i = 0; i < chunk->num_elements; i++) {
                unsigned cpu_dw_offset = i * chunk->element_dw_size;
                unsigned gpu_dw_offset = chunk->slot_remap(i) * chunk->element_dw_size;
                const char *list_note = chunk->gpu_list ? "GPU list" : "CPU list";
                uint32_t *cpu_list = chunk->list + cpu_dw_offset;
                uint32_t *gpu_list = chunk->gpu_list ? chunk->gpu_list + gpu_dw_offset : cpu_list;

                fprintf(f, COLOR_GREEN "%s%s slot %u (%s):" COLOR_RESET "\n",
                        chunk->shader_name, chunk->elem_name, i, list_note);

                switch (chunk->element_dw_size) {
                case 4:
                        for (unsigned j = 0; j < 4; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F00_SQ_BUF_RSRC_WORD0 + j*4,
                                            gpu_list[j], 0xffffffff);
                        break;
                case 8:
                        for (unsigned j = 0; j < 8; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F10_SQ_IMG_RSRC_WORD0 + j*4,
                                            gpu_list[j], 0xffffffff);

                        fprintf(f, COLOR_CYAN "    Buffer:" COLOR_RESET "\n");
                        for (unsigned j = 0; j < 4; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F00_SQ_BUF_RSRC_WORD0 + j*4,
                                            gpu_list[4+j], 0xffffffff);
                        break;
                case 16:
                        for (unsigned j = 0; j < 8; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F10_SQ_IMG_RSRC_WORD0 + j*4,
                                            gpu_list[j], 0xffffffff);

                        fprintf(f, COLOR_CYAN "    Buffer:" COLOR_RESET "\n");
                        for (unsigned j = 0; j < 4; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F00_SQ_BUF_RSRC_WORD0 + j*4,
                                            gpu_list[4+j], 0xffffffff);

                        fprintf(f, COLOR_CYAN "    FMASK:" COLOR_RESET "\n");
                        for (unsigned j = 0; j < 8; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F10_SQ_IMG_RSRC_WORD0 + j*4,
                                            gpu_list[8+j], 0xffffffff);

                        fprintf(f, COLOR_CYAN "    Sampler state:" COLOR_RESET "\n");
                        for (unsigned j = 0; j < 4; j++)
                                ac_dump_reg(f, chunk->chip_class,
                                            R_008F30_SQ_IMG_SAMP_WORD0 + j*4,
                                            gpu_list[12+j], 0xffffffff);
                        break;
                }

                if (memcmp(gpu_list, cpu_list, chunk->element_dw_size * 4) != 0) {
                        fprintf(f, COLOR_RED "!!!!! This slot was corrupted in GPU memory !!!!!"
                                COLOR_RESET "\n");
                }

                fprintf(f, "\n");
        }

}

static const struct u_log_chunk_type si_log_chunk_type_descriptor_list = {
        .destroy = si_log_chunk_desc_list_destroy,
        .print = si_log_chunk_desc_list_print,
};

static void si_dump_descriptor_list(struct si_screen *screen,
                                    struct si_descriptors *desc,
                                    const char *shader_name,
                                    const char *elem_name,
                                    unsigned element_dw_size,
                                    unsigned num_elements,
                                    slot_remap_func slot_remap,
                                    struct u_log_context *log)
{
        if (!desc->list)
                return;

        /* In some cases, the caller doesn't know how many elements are really
         * uploaded. Reduce num_elements to fit in the range of active slots. */
        unsigned active_range_dw_begin =
                desc->first_active_slot * desc->element_dw_size;
        unsigned active_range_dw_end =
                active_range_dw_begin + desc->num_active_slots * desc->element_dw_size;

        while (num_elements > 0) {
                int i = slot_remap(num_elements - 1);
                unsigned dw_begin = i * element_dw_size;
                unsigned dw_end = dw_begin + element_dw_size;

                if (dw_begin >= active_range_dw_begin && dw_end <= active_range_dw_end)
                        break;

                num_elements--;
        }

        struct si_log_chunk_desc_list *chunk =
                CALLOC_VARIANT_LENGTH_STRUCT(si_log_chunk_desc_list,
                                             4 * element_dw_size * num_elements);
        chunk->shader_name = shader_name;
        chunk->elem_name = elem_name;
        chunk->element_dw_size = element_dw_size;
        chunk->num_elements = num_elements;
        chunk->slot_remap = slot_remap;
        chunk->chip_class = screen->info.chip_class;

        si_resource_reference(&chunk->buf, desc->buffer);
        chunk->gpu_list = desc->gpu_list;

        for (unsigned i = 0; i < num_elements; ++i) {
                memcpy(&chunk->list[i * element_dw_size],
                       &desc->list[slot_remap(i) * element_dw_size],
                       4 * element_dw_size);
        }

        u_log_chunk(log, &si_log_chunk_type_descriptor_list, chunk);
}

static unsigned si_identity(unsigned slot)
{
        return slot;
}

static void si_dump_descriptors(struct si_context *sctx,
                                enum pipe_shader_type processor,
                                const struct tgsi_shader_info *info,
                                struct u_log_context *log)
{
        struct si_descriptors *descs =
                &sctx->descriptors[SI_DESCS_FIRST_SHADER +
                                   processor * SI_NUM_SHADER_DESCS];
        static const char *shader_name[] = {"VS", "PS", "GS", "TCS", "TES", "CS"};
        const char *name = shader_name[processor];
        unsigned enabled_constbuf, enabled_shaderbuf, enabled_samplers;
        unsigned enabled_images;

        if (info) {
                enabled_constbuf = info->const_buffers_declared;
                enabled_shaderbuf = info->shader_buffers_declared;
                enabled_samplers = info->samplers_declared;
                enabled_images = info->images_declared;
        } else {
                enabled_constbuf = sctx->const_and_shader_buffers[processor].enabled_mask >>
                                   SI_NUM_SHADER_BUFFERS;
                enabled_shaderbuf = sctx->const_and_shader_buffers[processor].enabled_mask &
                                    u_bit_consecutive(0, SI_NUM_SHADER_BUFFERS);
                enabled_shaderbuf = util_bitreverse(enabled_shaderbuf) >>
                                    (32 - SI_NUM_SHADER_BUFFERS);
                enabled_samplers = sctx->samplers[processor].enabled_mask;
                enabled_images = sctx->images[processor].enabled_mask;
        }

        if (processor == PIPE_SHADER_VERTEX &&
            sctx->vb_descriptors_buffer &&
            sctx->vb_descriptors_gpu_list &&
            sctx->vertex_elements) {
                assert(info); /* only CS may not have an info struct */
                struct si_descriptors desc = {};

                desc.buffer = sctx->vb_descriptors_buffer;
                desc.list = sctx->vb_descriptors_gpu_list;
                desc.gpu_list = sctx->vb_descriptors_gpu_list;
                desc.element_dw_size = 4;
                desc.num_active_slots = sctx->vertex_elements->desc_list_byte_size / 16;

                si_dump_descriptor_list(sctx->screen, &desc, name,
                                        " - Vertex buffer", 4, info->num_inputs,
                                        si_identity, log);
        }

        si_dump_descriptor_list(sctx->screen,
                                &descs[SI_SHADER_DESCS_CONST_AND_SHADER_BUFFERS],
                                name, " - Constant buffer", 4,
                                util_last_bit(enabled_constbuf),
                                si_get_constbuf_slot, log);
        si_dump_descriptor_list(sctx->screen,
                                &descs[SI_SHADER_DESCS_CONST_AND_SHADER_BUFFERS],
                                name, " - Shader buffer", 4,
                                util_last_bit(enabled_shaderbuf),
                                si_get_shaderbuf_slot, log);
        si_dump_descriptor_list(sctx->screen,
                                &descs[SI_SHADER_DESCS_SAMPLERS_AND_IMAGES],
                                name, " - Sampler", 16,
                                util_last_bit(enabled_samplers),
                                si_get_sampler_slot, log);
        si_dump_descriptor_list(sctx->screen,
                                &descs[SI_SHADER_DESCS_SAMPLERS_AND_IMAGES],
                                name, " - Image", 8,
                                util_last_bit(enabled_images),
                                si_get_image_slot, log);
}

static void si_dump_gfx_descriptors(struct si_context *sctx,
                                    const struct si_shader_ctx_state *state,
                                    struct u_log_context *log)
{
        if (!state->cso || !state->current)
                return;

        si_dump_descriptors(sctx, state->cso->type, &state->cso->info, log);
}

static void si_dump_compute_descriptors(struct si_context *sctx,
                                        struct u_log_context *log)
{
        if (!sctx->cs_shader_state.program)
                return;

        si_dump_descriptors(sctx, PIPE_SHADER_COMPUTE, NULL, log);
}

struct si_shader_inst {
        const char *text; /* start of disassembly for this instruction */
        unsigned textlen;
        unsigned size;   /* instruction size = 4 or 8 */
        uint64_t addr; /* instruction address */
};

/**
 * Split a disassembly string into instructions and add them to the array
 * pointed to by \p instructions.
 *
 * Labels are considered to be part of the following instruction.
 */
static void si_add_split_disasm(const char *disasm,
                                uint64_t *addr,
                                unsigned *num,
                                struct si_shader_inst *instructions)
{
        const char *semicolon;

        while ((semicolon = strchr(disasm, ';'))) {
                struct si_shader_inst *inst = &instructions[(*num)++];
                const char *end = util_strchrnul(semicolon, '\n');

                inst->text = disasm;
                inst->textlen = end - disasm;

                inst->addr = *addr;
                /* More than 16 chars after ";" means the instruction is 8 bytes long. */
                inst->size = end - semicolon > 16 ? 8 : 4;
                *addr += inst->size;

                if (!(*end))
                        break;
                disasm = end + 1;
        }
}

/* If the shader is being executed, print its asm instructions, and annotate
 * those that are being executed right now with information about waves that
 * execute them. This is most useful during a GPU hang.
 */
static void si_print_annotated_shader(struct si_shader *shader,
                                      struct ac_wave_info *waves,
                                      unsigned num_waves,
                                      FILE *f)
{
        if (!shader || !shader->binary.disasm_string)
                return;

        uint64_t start_addr = shader->bo->gpu_address;
        uint64_t end_addr = start_addr + shader->bo->b.b.width0;
        unsigned i;

        /* See if any wave executes the shader. */
        for (i = 0; i < num_waves; i++) {
                if (start_addr <= waves[i].pc && waves[i].pc <= end_addr)
                        break;
        }
        if (i == num_waves)
                return; /* the shader is not being executed */

        /* Remember the first found wave. The waves are sorted according to PC. */
        waves = &waves[i];
        num_waves -= i;

        /* Get the list of instructions.
         * Buffer size / 4 is the upper bound of the instruction count.
         */
        unsigned num_inst = 0;
        uint64_t inst_addr = start_addr;
        struct si_shader_inst *instructions =
                calloc(shader->bo->b.b.width0 / 4, sizeof(struct si_shader_inst));

        if (shader->prolog) {
                si_add_split_disasm(shader->prolog->binary.disasm_string,
                                    &inst_addr, &num_inst, instructions);
        }
        if (shader->previous_stage) {
                si_add_split_disasm(shader->previous_stage->binary.disasm_string,
                                    &inst_addr, &num_inst, instructions);
        }
        if (shader->prolog2) {
                si_add_split_disasm(shader->prolog2->binary.disasm_string,
                                    &inst_addr, &num_inst, instructions);
        }
        si_add_split_disasm(shader->binary.disasm_string,
                            &inst_addr, &num_inst, instructions);
        if (shader->epilog) {
                si_add_split_disasm(shader->epilog->binary.disasm_string,
                                    &inst_addr, &num_inst, instructions);
        }

        fprintf(f, COLOR_YELLOW "%s - annotated disassembly:" COLOR_RESET "\n",
                si_get_shader_name(shader, shader->selector->type));

        /* Print instructions with annotations. */
        for (i = 0; i < num_inst; i++) {
                struct si_shader_inst *inst = &instructions[i];

                fprintf(f, "%.*s [PC=0x%"PRIx64", size=%u]\n",
                        inst->textlen, inst->text, inst->addr, inst->size);

                /* Print which waves execute the instruction right now. */
                while (num_waves && inst->addr == waves->pc) {
                        fprintf(f,
                                "          " COLOR_GREEN "^ SE%u SH%u CU%u "
                                "SIMD%u WAVE%u  EXEC=%016"PRIx64 "  ",
                                waves->se, waves->sh, waves->cu, waves->simd,
                                waves->wave, waves->exec);

                        if (inst->size == 4) {
                                fprintf(f, "INST32=%08X" COLOR_RESET "\n",
                                        waves->inst_dw0);
                        } else {
                                fprintf(f, "INST64=%08X %08X" COLOR_RESET "\n",
                                        waves->inst_dw0, waves->inst_dw1);
                        }

                        waves->matched = true;
                        waves = &waves[1];
                        num_waves--;
                }
        }

        fprintf(f, "\n\n");
        free(instructions);
}

static void si_dump_annotated_shaders(struct si_context *sctx, FILE *f)
{
        struct ac_wave_info waves[AC_MAX_WAVES_PER_CHIP];
        unsigned num_waves = ac_get_wave_info(waves);

        fprintf(f, COLOR_CYAN "The number of active waves = %u" COLOR_RESET
                "\n\n", num_waves);

        si_print_annotated_shader(sctx->vs_shader.current, waves, num_waves, f);
        si_print_annotated_shader(sctx->tcs_shader.current, waves, num_waves, f);
        si_print_annotated_shader(sctx->tes_shader.current, waves, num_waves, f);
        si_print_annotated_shader(sctx->gs_shader.current, waves, num_waves, f);
        si_print_annotated_shader(sctx->ps_shader.current, waves, num_waves, f);

        /* Print waves executing shaders that are not currently bound. */
        unsigned i;
        bool found = false;
        for (i = 0; i < num_waves; i++) {
                if (waves[i].matched)
                        continue;

                if (!found) {
                        fprintf(f, COLOR_CYAN
                                "Waves not executing currently-bound shaders:"
                                COLOR_RESET "\n");
                        found = true;
                }
                fprintf(f, "    SE%u SH%u CU%u SIMD%u WAVE%u  EXEC=%016"PRIx64
                        "  INST=%08X %08X  PC=%"PRIx64"\n",
                        waves[i].se, waves[i].sh, waves[i].cu, waves[i].simd,
                        waves[i].wave, waves[i].exec, waves[i].inst_dw0,
                        waves[i].inst_dw1, waves[i].pc);
        }
        if (found)
                fprintf(f, "\n\n");
}

static void si_dump_command(const char *title, const char *command, FILE *f)
{
        char line[2000];

        FILE *p = popen(command, "r");
        if (!p)
                return;

        fprintf(f, COLOR_YELLOW "%s: " COLOR_RESET "\n", title);
        while (fgets(line, sizeof(line), p))
                fputs(line, f);
        fprintf(f, "\n\n");
        pclose(p);
}

static void si_dump_debug_state(struct pipe_context *ctx, FILE *f,
                                unsigned flags)
{
        struct si_context *sctx = (struct si_context*)ctx;

        if (sctx->log)
                u_log_flush(sctx->log);

        if (flags & PIPE_DUMP_DEVICE_STATUS_REGISTERS) {
                si_dump_debug_registers(sctx, f);

                si_dump_annotated_shaders(sctx, f);
                si_dump_command("Active waves (raw data)", "umr -O halt_waves -wa | column -t", f);
                si_dump_command("Wave information", "umr -O halt_waves,bits -wa", f);
        }
}

void si_log_draw_state(struct si_context *sctx, struct u_log_context *log)
{
        struct si_shader_ctx_state *tcs_shader;

        if (!log)
                return;

        tcs_shader = &sctx->tcs_shader;
        if (sctx->tes_shader.cso && !sctx->tcs_shader.cso)
                tcs_shader = &sctx->fixed_func_tcs_shader;

        si_dump_framebuffer(sctx, log);

        si_dump_gfx_shader(sctx, &sctx->vs_shader, log);
        si_dump_gfx_shader(sctx, tcs_shader, log);
        si_dump_gfx_shader(sctx, &sctx->tes_shader, log);
        si_dump_gfx_shader(sctx, &sctx->gs_shader, log);
        si_dump_gfx_shader(sctx, &sctx->ps_shader, log);

        si_dump_descriptor_list(sctx->screen,
                                &sctx->descriptors[SI_DESCS_RW_BUFFERS],
                                "", "RW buffers", 4,
                                sctx->descriptors[SI_DESCS_RW_BUFFERS].num_active_slots,
                                si_identity, log);
        si_dump_gfx_descriptors(sctx, &sctx->vs_shader, log);
        si_dump_gfx_descriptors(sctx, tcs_shader, log);
        si_dump_gfx_descriptors(sctx, &sctx->tes_shader, log);
        si_dump_gfx_descriptors(sctx, &sctx->gs_shader, log);
        si_dump_gfx_descriptors(sctx, &sctx->ps_shader, log);
}

void si_log_compute_state(struct si_context *sctx, struct u_log_context *log)
{
        if (!log)
                return;

        si_dump_compute_shader(sctx, log);
        si_dump_compute_descriptors(sctx, log);
}

static void si_dump_dma(struct si_context *sctx,
                        struct radeon_saved_cs *saved, FILE *f)
{
        static const char ib_name[] = "sDMA IB";
        unsigned i;

        si_dump_bo_list(sctx, saved, f);

        fprintf(f, "------------------ %s begin ------------------\n", ib_name);

        for (i = 0; i < saved->num_dw; ++i) {
                fprintf(f, " %08x\n", saved->ib[i]);
        }

        fprintf(f, "------------------- %s end -------------------\n", ib_name);
        fprintf(f, "\n");

        fprintf(f, "SDMA Dump Done.\n");
}

void si_check_vm_faults(struct si_context *sctx,
                        struct radeon_saved_cs *saved, enum ring_type ring)
{
        struct pipe_screen *screen = sctx->b.screen;
        FILE *f;
        uint64_t addr;
        char cmd_line[4096];

        if (!ac_vm_fault_occured(sctx->chip_class,
                                 &sctx->dmesg_timestamp, &addr))
                return;

        f = dd_get_debug_file(false);
        if (!f)
                return;

        fprintf(f, "VM fault report.\n\n");
        if (os_get_command_line(cmd_line, sizeof(cmd_line)))
                fprintf(f, "Command: %s\n", cmd_line);
        fprintf(f, "Driver vendor: %s\n", screen->get_vendor(screen));
        fprintf(f, "Device vendor: %s\n", screen->get_device_vendor(screen));
        fprintf(f, "Device name: %s\n\n", screen->get_name(screen));
        fprintf(f, "Failing VM page: 0x%08"PRIx64"\n\n", addr);

        if (sctx->apitrace_call_number)
                fprintf(f, "Last apitrace call: %u\n\n",
                        sctx->apitrace_call_number);

        switch (ring) {
        case RING_GFX: {
                struct u_log_context log;
                u_log_context_init(&log);

                si_log_draw_state(sctx, &log);
                si_log_compute_state(sctx, &log);
                si_log_cs(sctx, &log, true);

                u_log_new_page_print(&log, f);
                u_log_context_destroy(&log);
                break;
        }
        case RING_DMA:
                si_dump_dma(sctx, saved, f);
                break;

        default:
                break;
        }

        fclose(f);

        fprintf(stderr, "Detected a VM fault, exiting...\n");
        exit(0);
}

void si_init_debug_functions(struct si_context *sctx)
{
        sctx->b.dump_debug_state = si_dump_debug_state;

        /* Set the initial dmesg timestamp for this context, so that
         * only new messages will be checked for VM faults.
         */
        if (sctx->screen->debug_flags & DBG(CHECK_VM))
                ac_vm_fault_occured(sctx->chip_class,
                                    &sctx->dmesg_timestamp, NULL);
}