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 #include "util/hash_table.h"
  36
  37 /* Memory handling */
  38
  39 static struct hash_table_u64 *mmap_table;
  40
  41 struct pandecode_mapped_memory *
  42 pandecode_find_mapped_gpu_mem_containing(uint64_t addr)
  43 {
  44         return _mesa_hash_table_u64_search(mmap_table, addr & ~(4096 - 1));
  45 }
  46
  47 static void
  48 pandecode_add_name(struct pandecode_mapped_memory *mem, uint64_t gpu_va, const char *name)
  49 {
  50         if (!name) {
  51                 /* If we don't have a name, assign one */
  52
  53                 snprintf(mem->name, ARRAY_SIZE(mem->name) - 1,
  54                          "memory_%" PRIx64, gpu_va);
  55         } else {
  56                 assert((strlen(name) + 1) < ARRAY_SIZE(mem->name));
  57                 memcpy(mem->name, name, strlen(name) + 1);
  58         }
  59 }
  60
  61 void
  62 pandecode_inject_mmap(uint64_t gpu_va, void *cpu, unsigned sz, const char *name)
  63 {
  64         /* First, search if we already mapped this and are just updating an address */
  65
  66         struct pandecode_mapped_memory *existing =
  67                 pandecode_find_mapped_gpu_mem_containing(gpu_va);
  68
  69         if (existing && existing->gpu_va == gpu_va) {
  70                 existing->length = sz;
  71                 existing->addr = cpu;
  72                 pandecode_add_name(existing, gpu_va, name);
  73                 return;
  74         }
  75
  76         /* Otherwise, add a fresh mapping */
  77         struct pandecode_mapped_memory *mapped_mem = NULL;
  78
  79         mapped_mem = malloc(sizeof(*mapped_mem));
  80         mapped_mem->gpu_va = gpu_va;
  81         mapped_mem->length = sz;
  82         mapped_mem->addr = cpu;
  83         pandecode_add_name(mapped_mem, gpu_va, name);
  84
  85         /* Add it to the table */
  86         assert((gpu_va & 4095) == 0);
  87
  88         for (unsigned i = 0; i < sz; i += 4096)
  89                 _mesa_hash_table_u64_insert(mmap_table, gpu_va + i, mapped_mem);
  90 }
  91
  92 char *
  93 pointer_as_memory_reference(uint64_t ptr)
  94 {
  95         struct pandecode_mapped_memory *mapped;
  96         char *out = malloc(128);
  97
  98         /* Try to find the corresponding mapped zone */
  99
 100         mapped = pandecode_find_mapped_gpu_mem_containing(ptr);
 101
 102         if (mapped) {
 103                 snprintf(out, 128, "%s + %d", mapped->name, (int) (ptr - mapped->gpu_va));
 104                 return out;
 105         }
 106
 107         /* Just use the raw address if other options are exhausted */
 108
 109         snprintf(out, 128, "0x%" PRIx64, ptr);
 110         return out;
 111
 112 }
 113
 114 static int pandecode_dump_frame_count = 0;
 115
 116 static void
 117 pandecode_dump_file_open(bool force_stderr)
 118 {
 119         if (pandecode_dump_stream)
 120                 return;
 121
 122         /* This does a getenv every frame, so it is possible to use
 123          * setenv to change the base at runtime.
 124          */
 125         const char *dump_file_base = debug_get_option("PANDECODE_DUMP_FILE", "pandecode.dump");
 126         if (force_stderr || !strcmp(dump_file_base, "stderr"))
 127                 pandecode_dump_stream = stderr;
 128         else {
 129                 char buffer[1024];
 130                 snprintf(buffer, sizeof(buffer), "%s.%04d", dump_file_base, pandecode_dump_frame_count);
 131                 printf("pandecode: dump command stream to file %s\n", buffer);
 132                 pandecode_dump_stream = fopen(buffer, "w");
 133                 if (!pandecode_dump_stream)
 134                         fprintf(stderr,
 135                                 "pandecode: failed to open command stream log file %s\n",
 136                                 buffer);
 137         }
 138 }
 139
 140 static void
 141 pandecode_dump_file_close(void)
 142 {
 143         if (pandecode_dump_stream && pandecode_dump_stream != stderr) {
 144                 fclose(pandecode_dump_stream);
 145                 pandecode_dump_stream = NULL;
 146         }
 147 }
 148
 149 void
 150 pandecode_initialize(bool to_stderr)
 151 {
 152         mmap_table = _mesa_hash_table_u64_create(NULL);
 153         pandecode_dump_file_open(to_stderr);
 154 }
 155
 156 void
 157 pandecode_next_frame(void)
 158 {
 159         pandecode_dump_file_close();
 160         pandecode_dump_frame_count++;
 161         pandecode_dump_file_open(false);
 162 }
 163
 164 void
 165 pandecode_close(void)
 166 {
 167         _mesa_hash_table_u64_destroy(mmap_table, NULL);
 168         pandecode_dump_file_close();
 169 }