1/*
2 * Copyright (C) 2010 NXP Semiconductors
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 * \file phOsalNfc.c
19 * \brief OSAL Implementation for linux
20 *
21 * Project: Trusted NFC Linux Light
22 *
23 * $Date: 03 aug 2009
24 * $Author: Jérémie Corbier
25 * $Revision: 1.0
26 *
27 */
28
29#include <stddef.h>
30#include <stdlib.h>
31#include <stdio.h>
32#include <signal.h>
33#include <unistd.h>
34
35#include <phOsalNfc.h>
36
37#ifdef ANDROID
38#define LOG_TAG "NFC-HCI"
39
40#include <utils/Log.h>
41
42phOsalNfc_Exception_t phOsalNfc_Exception;
43#endif
44
45#ifdef DEBUG
46#define MAX_PRINT_BUFSIZE (0x450U)
47char phOsalNfc_DbgTraceBuffer[MAX_PRINT_BUFSIZE];
48#endif
49
50void phLibNfc_Mgt_Recovery();
51
52/*!
53 * \brief Allocates memory.
54 *        This function attempts to allocate \a size bytes on the heap and
55 *        returns a pointer to the allocated block.
56 *
57 * \param size size of the memory block to be allocated on the heap.
58 *
59 * \return pointer to allocated memory block or NULL in case of error.
60 */
61void *phOsalNfc_GetMemory(uint32_t size)
62{
63   void *pMem = (void *)malloc(size);
64   return pMem;
65}
66
67/*!
68 * \brief Frees allocated memory block.
69 *        This function deallocates memory region pointed to by \a pMem.
70 *
71 * \param pMem pointer to memory block to be freed.
72 */
73void phOsalNfc_FreeMemory(void *pMem)
74{
75   if(NULL !=  pMem)
76      free(pMem);
77}
78
79void phOsalNfc_DbgString(const char *pString)
80{
81#ifdef DEBUG
82   if(pString != NULL)
83#ifndef ANDROID
84      printf(pString);
85#else
86      ALOGD("%s", pString);
87#endif
88#endif
89}
90
91void phOsalNfc_DbgTrace(uint8_t data[], uint32_t size)
92{
93#ifdef DEBUG
94   uint32_t i;
95#ifdef ANDROID
96   char buf[10];
97#endif
98
99   if(size == 0)
100      return;
101
102#ifndef ANDROID
103   for(i = 0; i < size; i++)
104   {
105      if((i % 10) == 0)
106         printf("\n\t\t\t");
107      printf("%02X ", data[i]);
108   }
109   printf("\n\tBlock size is: %d\n", size);
110#else
111   phOsalNfc_DbgTraceBuffer[0] = '\0';
112   for(i = 0; i < size; i++)
113   {
114      if((i % 10) == 0)
115      {
116         ALOGD("%s", phOsalNfc_DbgTraceBuffer);
117         phOsalNfc_DbgTraceBuffer[0] = '\0';
118      }
119
120      snprintf(buf, 10, "%02X ", data[i]);
121      strncat(phOsalNfc_DbgTraceBuffer, buf, 10);
122   }
123   ALOGD("%s", phOsalNfc_DbgTraceBuffer);
124   ALOGD("Block size is: %d", size);
125#endif
126#endif
127}
128
129/*!
130 * \brief Raises exception.
131 *        This function raises an exception of type \a eExceptionType with
132 *        reason \a reason to stack clients.
133 *
134 * \param eExceptionType exception type.
135 * \param reason reason for this exception.
136 *
137 * \note Clients willing to catch exceptions are to handle the SIGABRT signal.
138 *       On Linux, exception type and reason are passed to the signal handler as
139 *       a pointer to a phOsalNfc_Exception_t structure.
140 *       As sigqueue is not available in Android, exception information are
141 *       stored in the phOsalNfc_Exception global.
142 */
143void phOsalNfc_RaiseException(phOsalNfc_ExceptionType_t eExceptionType, uint16_t reason)
144{
145    if(eExceptionType == phOsalNfc_e_UnrecovFirmwareErr)
146    {
147        ALOGE("HCI Timeout - Exception raised - Force restart of NFC service");
148        phLibNfc_Mgt_Recovery();
149        abort();
150    } else {
151        ALOGD("phOsalNfc_RaiseException() called");
152    }
153}
154
155/*!
156 * \brief display data bytes.
157 *        This function displays data bytes for debug purpose
158 * \param[in] pString pointer to string to be displayed.
159 * \param[in] length number of bytes to be displayed.
160 * \param[in] pBuffer pointer to data bytes to be displayed.
161 *
162 */
163void phOsalNfc_PrintData(const char *pString, uint32_t length, uint8_t *pBuffer,
164        int verbosity)
165{
166    char print_buffer[length * 3 + 1];
167    unsigned int i;
168
169    if (pString == NULL) {
170        pString = "";
171    }
172    print_buffer[0] = '\0';
173    for (i = 0; i < length; i++) {
174        snprintf(&print_buffer[i*3], 4, " %02X", pBuffer[i]);
175    }
176
177    char llc[40] = "";
178
179    if (verbosity >= 2) {
180        uint8_t llc_header = 0;
181        if (!strcmp(pString, "SEND") && length >= 2) {
182            llc_header = pBuffer[1];
183        } else if (!strcmp(pString, "RECV") && length >= 2) {
184            llc_header = pBuffer[0];
185        }
186
187        if ((llc_header & 0xC0) == 0x80) {
188            // I
189            uint8_t ns = (llc_header & 0x38) >> 3;
190            uint8_t nr = llc_header & 0x07;
191            snprintf(&llc[0], sizeof(llc), "I %d (%d)", ns, nr);
192        } else if ((llc_header & 0xE0) == 0xC0) {
193            // S
194            uint8_t t = (llc_header & 0x18) >> 3;
195            uint8_t nr = llc_header & 0x07;
196            char *type;
197            switch (t) {
198            case 0x00: type = "RR "; break;
199            case 0x01: type = "REJ"; break;
200            case 0x02: type = "RNR"; break;
201            case 0x03: type = "SREJ"; break;
202            default: type = "???"; break;
203            }
204            snprintf(&llc[0], sizeof(llc), "S %s (%d)", type, nr);
205        } else if ((llc_header & 0xE0) == 0xE0) {
206            // U
207            snprintf(&llc[0], sizeof(llc), "U");
208        } else if (length > 1) {
209            snprintf(&llc[0], sizeof(llc), "???");
210        }
211    }
212
213    ALOGD("> %s:%s\t%s", pString, print_buffer, llc);
214}
215