src/panfrost/pandecode/common.c

   1 /*
   2  * Copyright (C) 2019 Alyssa Rosenzweig
   3  * Copyright (C) 2017-2018 Lyude Paul
   4  * Copyright (C) 2019 Collabora, Ltd.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <assert.h>
  29 #include <stdint.h>
  30 #include <string.h>
  31
  32 #include "decode.h"
  33 #include "util/macros.h"
  34 #include "util/u_debug.h"
  35
  36 /* Memory handling */
  37
  38 static struct pandecode_mapped_memory mmaps;
  39
  40 struct pandecode_mapped_memory *
  41 pandecode_find_mapped_gpu_mem_containing(uint64_t addr)
  42 {
  43         list_for_each_entry(struct pandecode_mapped_memory, pos, &mmaps.node, node) {
  44                 if (addr >= pos->gpu_va && addr < pos->gpu_va + pos->length)
  45                         return pos;
  46         }
  47
  48         return NULL;
  49 }
  50
  51 static void
  52 pandecode_add_name(struct pandecode_mapped_memory *mem, uint64_t gpu_va, const char *name)
  53 {
  54         if (!name) {
  55                 /* If we don't have a name, assign one */
  56
  57                 snprintf(mem->name, ARRAY_SIZE(mem->name) - 1,
  58                          "memory_%" PRIx64, gpu_va);
  59         } else {
  60                 assert((strlen(name) + 1) < ARRAY_SIZE(mem->name));
  61                 memcpy(mem->name, name, strlen(name) + 1);
  62         }
  63 }
  64
  65 void
  66 pandecode_inject_mmap(uint64_t gpu_va, void *cpu, unsigned sz, const char *name)
  67 {
  68         /* First, search if we already mapped this and are just updating an address */
  69
  70         list_for_each_entry(struct pandecode_mapped_memory, pos, &mmaps.node, node) {
  71                 if (pos->gpu_va == gpu_va) {
  72                         /* TODO: Resizing weirdness. Only applies to tracing
  73                          * the legacy driver, not for native traces */
  74
  75                         pos->length = sz;
  76                         pos->addr = cpu;
  77                         pandecode_add_name(pos, gpu_va, name);
  78
  79                         return;
  80                 }
  81         }
  82
  83         /* Otherwise, add a fresh mapping */
  84         struct pandecode_mapped_memory *mapped_mem = NULL;
  85
  86         mapped_mem = malloc(sizeof(*mapped_mem));
  87         list_inithead(&mapped_mem->node);
  88
  89         mapped_mem->gpu_va = gpu_va;
  90         mapped_mem->length = sz;
  91         mapped_mem->addr = cpu;
  92         pandecode_add_name(mapped_mem, gpu_va, name);
  93
  94         list_add(&mapped_mem->node, &mmaps.node);
  95 }
  96
  97 char *
  98 pointer_as_memory_reference(uint64_t ptr)
  99 {
 100         struct pandecode_mapped_memory *mapped;
 101         char *out = malloc(128);
 102
 103         /* Try to find the corresponding mapped zone */
 104
 105         mapped = pandecode_find_mapped_gpu_mem_containing(ptr);
 106
 107         if (mapped) {
 108                 snprintf(out, 128, "%s + %d", mapped->name, (int) (ptr - mapped->gpu_va));
 109                 return out;
 110         }
 111
 112         /* Just use the raw address if other options are exhausted */
 113
 114         snprintf(out, 128, "0x%" PRIx64, ptr);
 115         return out;
 116
 117 }
 118
 119 static int pandecode_dump_frame_count = 0;
 120
 121 static void
 122 pandecode_dump_file_open(bool force_stderr)
 123 {
 124         if (pandecode_dump_stream)
 125                 return;
 126
 127         /* This does a getenv every frame, so it is possible to use
 128          * setenv to change the base at runtime.
 129          */
 130         const char *dump_file_base = debug_get_option("PANDECODE_DUMP_FILE", "pandecode.dump");
 131         if (force_stderr || !strcmp(dump_file_base, "stderr"))
 132                 pandecode_dump_stream = stderr;
 133         else {
 134                 char buffer[1024];
 135                 snprintf(buffer, sizeof(buffer), "%s.%04d", dump_file_base, pandecode_dump_frame_count);
 136                 printf("pandecode: dump command stream to file %s\n", buffer);
 137                 pandecode_dump_stream = fopen(buffer, "w");
 138                 if (!pandecode_dump_stream)
 139                         fprintf(stderr,
 140                                 "pandecode: failed to open command stream log file %s\n",
 141                                 buffer);
 142         }
 143 }
 144
 145 static void
 146 pandecode_dump_file_close(void)
 147 {
 148         if (pandecode_dump_stream && pandecode_dump_stream != stderr) {
 149                 fclose(pandecode_dump_stream);
 150                 pandecode_dump_stream = NULL;
 151         }
 152 }
 153
 154 void
 155 pandecode_initialize(bool to_stderr)
 156 {
 157         list_inithead(&mmaps.node);
 158         pandecode_dump_file_open(to_stderr);
 159 }
 160
 161 void
 162 pandecode_next_frame(void)
 163 {
 164         pandecode_dump_file_close();
 165         pandecode_dump_frame_count++;
 166         pandecode_dump_file_open(false);
 167 }
 168
 169 void
 170 pandecode_close(void)
 171 {
 172         pandecode_dump_file_close();
 173 }