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/*
* This file is part of Samsung-RIL.
*
* Copyright (C) 2011-2013 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 the 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
*/
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);
}
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