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
  35 /* Memory handling */
  36
  37 static struct pandecode_mapped_memory mmaps;
  38
  39 struct pandecode_mapped_memory *
  40 pandecode_find_mapped_gpu_mem_containing(uint64_t addr)
  41 {
  42         list_for_each_entry(struct pandecode_mapped_memory, pos, &mmaps.node, node) {
  43                 if (addr >= pos->gpu_va && addr < pos->gpu_va + pos->length)
  44                         return pos;
  45         }
  46
  47         return NULL;
  48 }
  49
  50 static void
  51 pandecode_add_name(struct pandecode_mapped_memory *mem, uint64_t gpu_va, const char *name)
  52 {
  53         if (!name) {
  54                 /* If we don't have a name, assign one */
  55
  56                 snprintf(mem->name, ARRAY_SIZE(mem->name) - 1,
  57                          "memory_%" PRIx64, gpu_va);
  58         } else {
  59                 assert((strlen(name) + 1) < ARRAY_SIZE(mem->name));
  60                 memcpy(mem->name, name, strlen(name) + 1);
  61         }
  62 }
  63
  64 void
  65 pandecode_inject_mmap(uint64_t gpu_va, void *cpu, unsigned sz, const char *name)
  66 {
  67         /* First, search if we already mapped this and are just updating an address */
  68
  69         list_for_each_entry(struct pandecode_mapped_memory, pos, &mmaps.node, node) {
  70                 if (pos->gpu_va == gpu_va) {
  71                         /* TODO: Resizing weirdness. Only applies to tracing
  72                          * the legacy driver, not for native traces */
  73
  74                         pos->length = sz;
  75                         pos->addr = cpu;
  76                         pandecode_add_name(pos, gpu_va, name);
  77
  78                         return;
  79                 }
  80         }
  81
  82         /* Otherwise, add a fresh mapping */
  83         struct pandecode_mapped_memory *mapped_mem = NULL;
  84
  85         mapped_mem = malloc(sizeof(*mapped_mem));
  86         list_inithead(&mapped_mem->node);
  87
  88         mapped_mem->gpu_va = gpu_va;
  89         mapped_mem->length = sz;
  90         mapped_mem->addr = cpu;
  91         pandecode_add_name(mapped_mem, gpu_va, name);
  92
  93         list_add(&mapped_mem->node, &mmaps.node);
  94 }
  95
  96 char *
  97 pointer_as_memory_reference(uint64_t ptr)
  98 {
  99         struct pandecode_mapped_memory *mapped;
 100         char *out = malloc(128);
 101
 102         /* Try to find the corresponding mapped zone */
 103
 104         mapped = pandecode_find_mapped_gpu_mem_containing(ptr);
 105
 106         if (mapped) {
 107                 snprintf(out, 128, "%s + %d", mapped->name, (int) (ptr - mapped->gpu_va));
 108                 return out;
 109         }
 110
 111         /* Just use the raw address if other options are exhausted */
 112
 113         snprintf(out, 128, "0x%" PRIx64, ptr);
 114         return out;
 115
 116 }
 117
 118 void
 119 pandecode_initialize(void)
 120 {
 121         list_inithead(&mmaps.node);
 122
 123 }