1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17
18#include <dlfcn.h>
19#include <stdint.h>
20#include <stdio.h>
21#include <string.h>
22#include <unistd.h>
23
24#define LOG_TAG "ese-sh"
25#include <ese/ese.h>
26#include <ese/log.h>
27
28#include "hw.h"
29
30void print_supported_hardware(const struct SupportedHardware *supported) {
31  printf("Supported hardware:\n");
32  for (size_t i = 0; i < supported->len; ++i) {
33    printf("\t%s\t(%s / %s)\n", supported->hw[i].name, supported->hw[i].sym,
34           supported->hw[i].lib);
35  }
36}
37
38int find_supported_hardware(const struct SupportedHardware *supported,
39                            const char *name) {
40  for (size_t i = 0; i < supported->len; ++i) {
41    if (!strcmp(name, supported->hw[i].name)) {
42      return (int)i;
43    }
44  }
45  return -1;
46}
47
48/* This should be C++. */
49void release_hardware(const struct Hardware *hw) {
50  void *hw_handle = dlopen(hw->lib, RTLD_NOW);
51  /* Close for the above open and the original. */
52  dlclose(hw_handle);
53  dlclose(hw_handle);
54}
55
56bool initialize_hardware(struct EseInterface *ese, const struct Hardware *hw) {
57  void *hw_handle = dlopen(hw->lib, RTLD_NOW);
58  if (!hw_handle) {
59    fprintf(stderr, "Failed to open hardware implementation: %s\n", dlerror());
60    return false;
61  }
62  const struct EseOperations **hw_ops = dlsym(hw_handle, hw->sym);
63  if (!hw_ops) {
64    fprintf(stderr, "Failed to find hardware implementation: %s\n", dlerror());
65    return false;
66  }
67  /* N.b., ese_init appends _ops to the second argument. */
68  ese_init(ese, *hw);
69  return true;
70}
71