1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/*
* This file is part of Samsung-RIL.
*
* Copyright (C) 2011-2012 Paul Kocialkowski <contact@paulk.fr>
*
* Samsung-RIL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Samsung-RIL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Samsung-RIL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#define LOG_TAG "RIL-GEN"
#include <utils/Log.h>
#include "samsung-ril.h"
#include "util.h"
/*
* IPC_GEN_PHONE_RES has shared aseq (in the header), group, index and type (in the data)
* with the original request it responds to.
* On this implementation, we just check aseq and command (group and index).
* aseq permits to identify the queued request and do what's wanted.
* It can be either call a function with the struct ipc_message_info,
* complete the request to RILJ (with or without an error),
* return to RILJ if there is an error in this response.
*
* It would have been possible to deal with group, index and type only and use
* callback functions. Though, what is currently being used is more a "standard"
* error catch system, that requires less code (no particular function), while
* it also permits using custom functions, when IPC_GEN_PHONE_RES code is
* request-specific.
*
* On a custom function, don't forget to get a clean new aseq if you're going to
* send some data to the modem, just liek this:
* aseq = ril_request_reg_id(ril_request_get_token(info->aseq));
*
* Please use GEN_PHONE_RES engine as often as possible!
*/
/*
* GEN expects functions
*/
int ipc_gen_phone_res_expect_register(unsigned char aseq, unsigned short command,
void (*func)(struct ipc_message_info *info), int complete, int abort)
{
struct ipc_gen_phone_res_expect_info *expect;
struct list_head *list_end;
struct list_head *list;
expect = calloc(1, sizeof(struct ipc_gen_phone_res_expect_info));
if (expect == NULL)
return -1;
expect->aseq = aseq;
expect->command = command;
expect->func = func;
expect->complete = complete;
expect->abort = abort;
list_end = ril_data.generic_responses;
while (list_end != NULL && list_end->next != NULL)
list_end = list_end->next;
list = list_head_alloc((void *) expect, list_end, NULL);
if (ril_data.generic_responses == NULL)
ril_data.generic_responses = list;
return 0;
}
void ipc_gen_phone_res_expect_unregister(struct ipc_gen_phone_res_expect_info *expect)
{
struct list_head *list;
if (expect == NULL)
return;
list = ril_data.generic_responses;
while (list != NULL) {
if (list->data == (void *) expect) {
memset(expect, 0, sizeof(struct ipc_gen_phone_res_expect_info));
free(expect);
if (list == ril_data.generic_responses)
ril_data.generic_responses = list->next;
list_head_free(list);
break;
}
list_continue:
list = list->next;
}
}
struct ipc_gen_phone_res_expect_info *ipc_gen_phone_res_expect_info_find_aseq(unsigned char aseq)
{
struct ipc_gen_phone_res_expect_info *expect;
struct list_head *list;
list = ril_data.generic_responses;
while (list != NULL) {
expect = (struct ipc_gen_phone_res_expect_info *) list->data;
if (expect == NULL)
goto list_continue;
if (expect->aseq == aseq)
return expect;
list_continue:
list = list->next;
}
return NULL;
}
int ipc_gen_phone_res_expect_to_func(unsigned char aseq, unsigned short command,
void (*func)(struct ipc_message_info *info))
{
return ipc_gen_phone_res_expect_register(aseq, command, func, 0, 0);
}
int ipc_gen_phone_res_expect_to_complete(unsigned char aseq, unsigned short command)
{
return ipc_gen_phone_res_expect_register(aseq, command, NULL, 1, 0);
}
int ipc_gen_phone_res_expect_to_abort(unsigned char aseq, unsigned short command)
{
return ipc_gen_phone_res_expect_register(aseq, command, NULL, 0, 1);
}
/*
* GEN dequeue function
*/
/*
* In: IPC_GEN_PHONE_RES
* Check the ipc_gen_phone_res_expects queue and act accordingly
*/
void ipc_gen_phone_res(struct ipc_message_info *info)
{
struct ipc_gen_phone_res_expect_info *expect;
struct ipc_gen_phone_res *phone_res;
RIL_Errno e;
int rc;
if (info->data == NULL || info->length < sizeof(struct ipc_gen_phone_res))
return;
phone_res = (struct ipc_gen_phone_res *) info->data;
expect = ipc_gen_phone_res_expect_info_find_aseq(info->aseq);
if (expect == NULL) {
LOGD("aseq: 0x%x not found in the IPC_GEN_PHONE_RES queue", info->aseq);
return;
}
LOGD("aseq: 0x%x found in the IPC_GEN_PHONE_RES queue!", info->aseq);
if (expect->command != IPC_COMMAND(phone_res)) {
LOGE("IPC_GEN_PHONE_RES aseq (0x%x) doesn't match the queued one with command (0x%x)",
expect->aseq, expect->command);
if (expect->func != NULL) {
LOGE("Not safe to run the custom function, reporting generic failure");
ril_request_complete(ril_request_get_token(expect->aseq), RIL_E_GENERIC_FAILURE, NULL, 0);
goto unregister;
}
}
if (expect->func != NULL) {
expect->func(info);
goto unregister;
}
rc = ipc_gen_phone_res_check(phone_res);
if (rc < 0)
e = RIL_E_GENERIC_FAILURE;
else
e = RIL_E_SUCCESS;
if (expect->complete || (expect->abort && e == RIL_E_GENERIC_FAILURE))
ril_request_complete(ril_request_get_token(expect->aseq), e, NULL, 0);
unregister:
ipc_gen_phone_res_expect_unregister(expect);
}
|
