1 /*
2 * Copyright (C) 2008 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 #include <stdlib.h>
18 #include <fcntl.h>
19 #include <errno.h>
20 #include <string.h>
21 #include <sys/types.h>
22 #include <sys/socket.h>
23 #include <arpa/inet.h>
24
25 #include <cutils/properties.h>
26 #define LOG_TAG "TiwlanWifiController"
27 #include <cutils/log.h>
28
29 #include "PropertyManager.h"
30 #include "TiwlanWifiController.h"
31 #include "TiwlanEventListener.h"
32
33 #define DRIVER_PROP_NAME "wlan.driver.status"
34
35 extern "C" int sched_yield(void);
36
TiwlanWifiController(PropertyManager * propmngr,IControllerHandler * handlers,char * modpath,char * modname,char * modargs)37 TiwlanWifiController::TiwlanWifiController(PropertyManager *propmngr,
38 IControllerHandler *handlers,
39 char *modpath, char *modname,
40 char *modargs) :
41 WifiController(propmngr, handlers, modpath, modname,
42 modargs) {
43 mEventListener = NULL;
44 mListenerSock = -1;
45 }
46
powerUp()47 int TiwlanWifiController::powerUp() {
48 return 0; // Powerup is currently done when the driver is loaded
49 }
50
powerDown()51 int TiwlanWifiController::powerDown() {
52 if (mEventListener) {
53 delete mEventListener;
54 shutdown(mListenerSock, SHUT_RDWR);
55 close(mListenerSock);
56 mListenerSock = -1;
57 mEventListener = NULL;
58 }
59
60 return 0; // Powerdown is currently done when the driver is unloaded
61 }
62
isPoweredUp()63 bool TiwlanWifiController::isPoweredUp() {
64 return isKernelModuleLoaded(getModuleName());
65 }
66
loadFirmware()67 int TiwlanWifiController::loadFirmware() {
68 char driver_status[PROPERTY_VALUE_MAX];
69 int count = 100;
70
71 property_set("ctl.start", "wlan_loader");
72 sched_yield();
73
74 // Wait for driver to be ready
75 while (count-- > 0) {
76 if (property_get(DRIVER_PROP_NAME, driver_status, NULL)) {
77 if (!strcmp(driver_status, "ok")) {
78 LOGD("Firmware loaded OK");
79
80 if (startDriverEventListener()) {
81 LOGW("Failed to start driver event listener (%s)",
82 strerror(errno));
83 }
84
85 return 0;
86 } else if (!strcmp(DRIVER_PROP_NAME, "failed")) {
87 LOGE("Firmware load failed");
88 return -1;
89 }
90 }
91 usleep(200000);
92 }
93 property_set(DRIVER_PROP_NAME, "timeout");
94 LOGE("Firmware load timed out");
95 return -1;
96 }
97
startDriverEventListener()98 int TiwlanWifiController::startDriverEventListener() {
99 struct sockaddr_in addr;
100
101 if (mListenerSock != -1) {
102 LOGE("Listener already started!");
103 errno = EBUSY;
104 return -1;
105 }
106
107 if ((mListenerSock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
108 LOGE("socket failed (%s)", strerror(errno));
109 return -1;
110 }
111
112 memset(&addr, 0, sizeof(addr));
113 addr.sin_family = AF_INET;
114 addr.sin_addr.s_addr = htonl(INADDR_ANY);
115 addr.sin_port = htons(TI_DRIVER_MSG_PORT);
116
117 if (bind(mListenerSock,
118 (struct sockaddr *) &addr,
119 sizeof(addr)) < 0) {
120 LOGE("bind failed (%s)", strerror(errno));
121 goto out_err;
122 }
123
124 mEventListener = new TiwlanEventListener(mListenerSock);
125
126 if (mEventListener->startListener()) {
127 LOGE("Error starting driver listener (%s)", strerror(errno));
128 goto out_err;
129 }
130 return 0;
131 out_err:
132 if (mEventListener) {
133 delete mEventListener;
134 mEventListener = NULL;
135 }
136 if (mListenerSock != -1) {
137 shutdown(mListenerSock, SHUT_RDWR);
138 close(mListenerSock);
139 mListenerSock = -1;
140 }
141 return -1;
142 }
143
isFirmwareLoaded()144 bool TiwlanWifiController::isFirmwareLoaded() {
145 // Always load the firmware
146 return false;
147 }
148