0,0 → 1,179 |
/* |
* 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 = -1; |
|
/** Get phone to device mapper task. */ |
static int devmap_get_phone(unsigned int flags) |
{ |
int phone; |
|
if (devmap_phone >= 0) |
return devmap_phone; |
|
if (flags & IPC_FLAG_BLOCKING) { |
phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP, |
DEVMAP_CLIENT, 0); |
} else { |
phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, |
DEVMAP_CLIENT, 0); |
} |
|
if (phone < 0) |
return phone; |
|
devmap_phone = phone; |
return phone; |
} |
|
/** Register new driver with devmap. */ |
int devmap_driver_register(const char *name, async_client_conn_t conn) |
{ |
ipcarg_t retval; |
aid_t req; |
ipc_call_t answer; |
int phone; |
ipcarg_t callback_phonehash; |
|
phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP, |
DEVMAP_DRIVER, 0); |
|
if (phone < 0) { |
return phone; |
} |
|
req = async_send_2(phone, DEVMAP_DRIVER_REGISTER, 0, 0, &answer); |
retval = ipc_data_write_start(phone, name, str_size(name) + 1); |
|
if (retval != EOK) { |
async_wait_for(req, NULL); |
ipc_hangup(phone); |
return -1; |
} |
|
async_set_client_connection(conn); |
|
ipc_connect_to_me(phone, 0, 0, 0, &callback_phonehash); |
async_wait_for(req, &retval); |
|
return phone; |
} |
|
int devmap_device_get_handle(const char *name, dev_handle_t *handle, |
unsigned int flags) |
{ |
ipcarg_t retval; |
aid_t req; |
ipc_call_t answer; |
int phone; |
|
phone = devmap_get_phone(flags); |
if (phone < 0) |
return phone; |
|
req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, flags, 0, |
&answer); |
|
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 = (int) 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; |
} |
|
/** Register new device. |
* |
* @param driver_phone |
* @param name Device name. |
* @param handle Output: Handle to the created instance of device. |
*/ |
int devmap_device_register(int driver_phone, const char *name, int *handle) |
{ |
ipcarg_t retval; |
aid_t req; |
ipc_call_t answer; |
|
req = async_send_2(driver_phone, DEVMAP_DEVICE_REGISTER, 0, 0, |
&answer); |
|
retval = ipc_data_write_start(driver_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; |
} |
|
*handle = (int) IPC_GET_ARG1(answer); |
return retval; |
} |