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intel/tools: Add the start of a generic batch decoder
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand
parent
4cb96fbd91
commit
be20043d00
2 changed files with 306 additions and 0 deletions
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@ -26,6 +26,7 @@
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include "common/gen_device_info.h"
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#include "util/hash_table.h"
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@ -183,6 +184,53 @@ void gen_print_group(FILE *out,
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uint64_t offset, const uint32_t *p, int p_bit,
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bool color);
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enum gen_batch_decode_flags {
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/** Print in color! */
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GEN_BATCH_DECODE_IN_COLOR = (1 << 0),
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/** Print everything, not just headers */
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GEN_BATCH_DECODE_FULL = (1 << 1),
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/** Print offsets along with the batch */
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GEN_BATCH_DECODE_OFFSETS = (1 << 2),
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};
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struct gen_batch_decode_bo {
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uint64_t addr;
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uint32_t size;
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const void *map;
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};
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struct gen_disasm *disasm;
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struct gen_batch_decode_ctx {
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struct gen_batch_decode_bo (*get_bo)(void *user_data,
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uint64_t base_address);
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void *user_data;
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FILE *fp;
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struct gen_spec *spec;
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enum gen_batch_decode_flags flags;
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struct gen_disasm *disasm;
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struct gen_batch_decode_bo surface_base;
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struct gen_batch_decode_bo dynamic_base;
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struct gen_batch_decode_bo instruction_base;
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};
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void gen_batch_decode_ctx_init(struct gen_batch_decode_ctx *ctx,
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const struct gen_device_info *devinfo,
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FILE *fp, enum gen_batch_decode_flags flags,
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const char *xml_path,
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struct gen_batch_decode_bo (*get_bo)(void *,
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uint64_t),
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void *user_data);
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void gen_batch_decode_ctx_finish(struct gen_batch_decode_ctx *ctx);
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void gen_print_batch(struct gen_batch_decode_ctx *ctx,
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const uint32_t *batch, uint32_t batch_size,
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uint64_t batch_addr);
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#ifdef __cplusplus
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}
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#endif
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258
src/intel/tools/gen_batch_decoder.c
Normal file
258
src/intel/tools/gen_batch_decoder.c
Normal file
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@ -0,0 +1,258 @@
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/*
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* Copyright © 2017 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "common/gen_decoder.h"
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#include "gen_disasm.h"
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#include <string.h>
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void
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gen_batch_decode_ctx_init(struct gen_batch_decode_ctx *ctx,
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const struct gen_device_info *devinfo,
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FILE *fp, enum gen_batch_decode_flags flags,
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const char *xml_path,
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struct gen_batch_decode_bo (*get_bo)(void *,
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uint64_t),
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void *user_data)
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{
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memset(ctx, 0, sizeof(*ctx));
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ctx->get_bo = get_bo;
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ctx->user_data = user_data;
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ctx->fp = fp;
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ctx->flags = flags;
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if (xml_path == NULL)
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ctx->spec = gen_spec_load(devinfo);
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else
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ctx->spec = gen_spec_load_from_path(devinfo, xml_path);
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ctx->disasm = gen_disasm_create(devinfo);
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}
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void
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gen_batch_decode_ctx_finish(struct gen_batch_decode_ctx *ctx)
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{
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gen_spec_destroy(ctx->spec);
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gen_disasm_destroy(ctx->disasm);
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}
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#define CSI "\e["
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#define BLUE_HEADER CSI "0;44m"
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#define GREEN_HEADER CSI "1;42m"
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#define NORMAL CSI "0m"
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#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
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static void
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ctx_print_group(struct gen_batch_decode_ctx *ctx,
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struct gen_group *group,
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uint64_t address, const void *map)
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{
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gen_print_group(ctx->fp, group, address, map, 0,
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(ctx->flags & GEN_BATCH_DECODE_IN_COLOR) != 0);
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}
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static struct gen_batch_decode_bo
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ctx_get_bo(struct gen_batch_decode_ctx *ctx, uint64_t addr)
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{
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if (gen_spec_get_gen(ctx->spec) >= gen_make_gen(8,0)) {
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/* On Broadwell and above, we have 48-bit addresses which consume two
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* dwords. Some packets require that these get stored in a "canonical
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* form" which means that bit 47 is sign-extended through the upper
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* bits. In order to correctly handle those aub dumps, we need to mask
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* off the top 16 bits.
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*/
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addr &= (~0ull >> 16);
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}
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struct gen_batch_decode_bo bo = ctx->get_bo(ctx->user_data, addr);
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if (gen_spec_get_gen(ctx->spec) >= gen_make_gen(8,0))
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bo.addr &= (~0ull >> 16);
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/* We may actually have an offset into the bo */
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if (bo.map != NULL) {
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assert(bo.addr <= addr);
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uint64_t offset = addr - bo.addr;
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bo.map += offset;
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bo.addr += offset;
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bo.size -= offset;
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}
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return bo;
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}
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static void
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handle_state_base_address(struct gen_batch_decode_ctx *ctx, const uint32_t *p)
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{
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struct gen_group *inst = gen_spec_find_instruction(ctx->spec, p);
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struct gen_field_iterator iter;
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gen_field_iterator_init(&iter, inst, p, 0, false);
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do {
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if (strcmp(iter.name, "Surface State Base Address") == 0) {
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ctx->surface_base = ctx_get_bo(ctx, iter.raw_value);
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} else if (strcmp(iter.name, "Dynamic State Base Address") == 0) {
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ctx->dynamic_base = ctx_get_bo(ctx, iter.raw_value);
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} else if (strcmp(iter.name, "Instruction Base Address") == 0) {
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ctx->instruction_base = ctx_get_bo(ctx, iter.raw_value);
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}
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} while (gen_field_iterator_next(&iter));
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}
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struct custom_decoder {
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const char *cmd_name;
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void (*decode)(struct gen_batch_decode_ctx *ctx, const uint32_t *p);
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} custom_decoders[] = {
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{ "STATE_BASE_ADDRESS", handle_state_base_address },
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};
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static inline uint64_t
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get_address(struct gen_spec *spec, const uint32_t *p)
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{
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/* Addresses are always guaranteed to be page-aligned and sometimes
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* hardware packets have extra stuff stuffed in the bottom 12 bits.
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*/
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uint64_t addr = p[0] & ~0xfffu;
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if (gen_spec_get_gen(spec) >= gen_make_gen(8,0)) {
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/* On Broadwell and above, we have 48-bit addresses which consume two
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* dwords. Some packets require that these get stored in a "canonical
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* form" which means that bit 47 is sign-extended through the upper
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* bits. In order to correctly handle those aub dumps, we need to mask
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* off the top 16 bits.
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*/
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addr |= ((uint64_t)p[1] & 0xffff) << 32;
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}
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return addr;
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}
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void
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gen_print_batch(struct gen_batch_decode_ctx *ctx,
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const uint32_t *batch, uint32_t batch_size,
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uint64_t batch_addr)
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{
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const uint32_t *p, *end = batch + batch_size;
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int length;
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struct gen_group *inst;
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for (p = batch; p < end; p += length) {
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inst = gen_spec_find_instruction(ctx->spec, p);
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length = gen_group_get_length(inst, p);
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assert(inst == NULL || length > 0);
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length = MAX2(1, length);
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if (inst == NULL) {
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fprintf(ctx->fp, "unknown instruction %08x\n", p[0]);
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continue;
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}
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const char *color, *reset_color;
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uint64_t offset;
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const char *inst_name = gen_group_get_name(inst);
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if (ctx->flags & GEN_BATCH_DECODE_IN_COLOR) {
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reset_color = NORMAL;
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if (ctx->flags & GEN_BATCH_DECODE_FULL) {
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if (strcmp(inst_name, "MI_BATCH_BUFFER_START") == 0 ||
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strcmp(inst_name, "MI_BATCH_BUFFER_END") == 0)
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color = GREEN_HEADER;
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else
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color = BLUE_HEADER;
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} else {
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color = NORMAL;
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}
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} else {
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color = "";
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reset_color = "";
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}
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if (ctx->flags & GEN_BATCH_DECODE_OFFSETS)
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offset = batch_addr + ((char *)p - (char *)batch);
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else
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offset = 0;
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fprintf(ctx->fp, "%s0x%08"PRIx64": 0x%08x: %-80s%s\n",
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color, offset, p[0], inst_name, reset_color);
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if (ctx->flags & GEN_BATCH_DECODE_FULL) {
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ctx_print_group(ctx, inst, offset, p);
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for (int i = 0; i < ARRAY_LENGTH(custom_decoders); i++) {
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if (strcmp(inst_name, custom_decoders[i].cmd_name) == 0) {
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custom_decoders[i].decode(ctx, p);
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break;
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}
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}
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}
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if (strcmp(inst_name, "MI_BATCH_BUFFER_START") == 0) {
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struct gen_batch_decode_bo next_batch;
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bool second_level;
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struct gen_field_iterator iter;
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gen_field_iterator_init(&iter, inst, p, 0, false);
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do {
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if (strcmp(iter.name, "Batch Buffer Start Address") == 0) {
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next_batch = ctx_get_bo(ctx, iter.raw_value);
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} else if (strcmp(iter.name, "Second Level Batch Buffer") == 0) {
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second_level = iter.raw_value;
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}
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} while (gen_field_iterator_next(&iter));
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if (next_batch.map == NULL) {
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fprintf(ctx->fp, "Secondary batch at 0x%08"PRIx64" unavailable",
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next_batch.addr);
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}
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if (second_level) {
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/* MI_BATCH_BUFFER_START with "2nd Level Batch Buffer" set acts
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* like a subroutine call. Commands that come afterwards get
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* processed once the 2nd level batch buffer returns with
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* MI_BATCH_BUFFER_END.
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*/
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if (next_batch.map) {
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gen_print_batch(ctx, next_batch.map, next_batch.size,
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next_batch.addr);
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}
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} else {
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/* MI_BATCH_BUFFER_START with "2nd Level Batch Buffer" unset acts
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* like a goto. Nothing after it will ever get processed. In
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* order to prevent the recursion from growing, we just reset the
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* loop and continue;
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*/
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if (next_batch.map) {
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p = next_batch.map;
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end = next_batch.map + next_batch.size;
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length = 0;
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continue;
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} else {
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/* Nothing we can do */
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break;
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}
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}
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} else if (strcmp(inst_name, "MI_BATCH_BUFFER_END") == 0) {
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break;
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}
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}
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}
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