/*
* Copyright (c) 2007 Josef Cejka
* Copyright (c) 2009 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include <ipc/ipc.h>
#include <ipc/services.h>
#include <ipc/devmap.h>
#include <devmap.h>
#include <async.h>
#include <errno.h>
static int devmap_phone_driver = -1;
static int devmap_phone_client = -1;
/** Get phone to device mapper task. */
int devmap_get_phone(devmap_interface_t iface, unsigned int flags)
{
switch (iface) {
case DEVMAP_DRIVER:
if (devmap_phone_driver >= 0)
return devmap_phone_driver;
if (flags & IPC_FLAG_BLOCKING)
devmap_phone_driver = ipc_connect_me_to_blocking(PHONE_NS,
SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
else
devmap_phone_driver = ipc_connect_me_to(PHONE_NS,
SERVICE_DEVMAP, DEVMAP_DRIVER, 0);
return devmap_phone_driver;
case DEVMAP_CLIENT:
if (devmap_phone_client >= 0)
return devmap_phone_client;
if (flags & IPC_FLAG_BLOCKING)
devmap_phone_client = ipc_connect_me_to_blocking(PHONE_NS,
SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
else
devmap_phone_client = ipc_connect_me_to(PHONE_NS,
SERVICE_DEVMAP, DEVMAP_CLIENT, 0);
return devmap_phone_client;
default:
return -1;
}
}
void devmap_hangup_phone(devmap_interface_t iface)
{
switch (iface) {
case DEVMAP_DRIVER:
if (devmap_phone_driver >= 0) {
ipc_hangup(devmap_phone_driver);
devmap_phone_driver = -1;
}
break;
case DEVMAP_CLIENT:
if (devmap_phone_client >= 0) {
ipc_hangup(devmap_phone_client);
devmap_phone_client = -1;
}
break;
default:
break;
}
}
/** Register new driver with devmap. */
int devmap_driver_register(const char *name, async_client_conn_t conn)
{
int phone = devmap_get_phone(DEVMAP_DRIVER, IPC_FLAG_BLOCKING);
if (phone < 0)
return phone;
ipc_call_t answer;
aid_t req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer);
ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
if (retval != EOK) {
async_wait_for(req, NULL);
return -1;
}
async_set_client_connection(conn);
ipcarg_t callback_phonehash;
ipc_connect_to_me(phone, 0, 0, 0, &callback_phonehash);
async_wait_for(req, &retval);
return retval;
}
/** Register new device.
*
* @param name Device name.
* @param handle Output: Handle to the created instance of device.
*
*/
int devmap_device_register(const char *name, dev_handle_t *handle)
{
int phone = devmap_get_phone(DEVMAP_DRIVER, IPC_FLAG_BLOCKING);
if (phone < 0)
return phone;
ipc_call_t answer;
aid_t req = async_send_2(phone, DEVMAP_DEVICE_REGISTER, 0, 0,
&answer);
ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
if (retval != EOK) {
async_wait_for(req, NULL);
return retval;
}
async_wait_for(req, &retval);
if (retval != EOK) {
if (handle != NULL)
*handle = -1;
return retval;
}
if (handle != NULL)
*handle = (dev_handle_t) IPC_GET_ARG1(answer);
return retval;
}
int devmap_device_get_handle(const char *name, dev_handle_t *handle, unsigned int flags)
{
int phone = devmap_get_phone(DEVMAP_CLIENT, flags);
if (phone < 0)
return phone;
ipc_call_t answer;
aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, flags, 0,
&answer);
ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1);
if (retval != EOK) {
async_wait_for(req, NULL);
return retval;
}
async_wait_for(req, &retval);
if (retval != EOK) {
if (handle != NULL)
*handle = -1;
return retval;
}
if (handle != NULL)
*handle = (dev_handle_t) IPC_GET_ARG1(answer);
return retval;
}
int devmap_device_connect(dev_handle_t handle, unsigned int flags)
{
int phone;
if (flags & IPC_FLAG_BLOCKING) {
phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP,
DEVMAP_CONNECT_TO_DEVICE, handle);
} else {
phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP,
DEVMAP_CONNECT_TO_DEVICE, handle);
}
return phone;
}
ipcarg_t devmap_device_get_count(void)
{
int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
if (phone < 0)
return 0;
ipcarg_t count;
int retval = ipc_call_sync_0_1(phone, DEVMAP_DEVICE_GET_COUNT, &count);
if (retval != EOK)
return 0;
return count;
}
ipcarg_t devmap_device_get_devices(ipcarg_t count, dev_desc_t *data)
{
int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
if (phone < 0)
return 0;
ipc_call_t answer;
aid_t req = async_send_0(phone, DEVMAP_DEVICE_GET_DEVICES, &answer);
ipcarg_t retval = ipc_data_read_start(phone, data, count * sizeof(dev_desc_t));
if (retval != EOK) {
async_wait_for(req, NULL);
return 0;
}
async_wait_for(req, &retval);
if (retval != EOK)
return 0;
return IPC_GET_ARG1(answer);
}