| 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; |
| } |