4 * @brief Meilhaus ME-1000 digital i/o implementation.
5 * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
6 * @author Guenter Gebhardt
10 * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
12 * This file is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #ifndef _ME1000_DIO_H_
28 #define _ME1000_DIO_H_
30 #include "mesubdevice.h"
36 * @brief The ME-1000 DIO subdevice class.
38 typedef struct me1000_dio_subdevice {
40 me_subdevice_t base; /**< The subdevice base class. */
43 // uint32_t magic; /**< The magic number unique for this structure. */
45 spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */
46 spinlock_t *ctrl_reg_lock; /**< Spin lock to protect #ctrl_reg and #ctrl_reg_mirror from concurrent access. */
47 int dio_idx; /**< The index of the DIO port on the device. */
49 unsigned long port_reg; /**< Register to read or write a value from or to the port respectively. */
50 unsigned long ctrl_reg; /**< Register to configure the DIO modes. */
51 #ifdef MEDEBUG_DEBUG_REG
52 unsigned long reg_base;
54 } me1000_dio_subdevice_t;
57 * @brief The constructor to generate a ME-1000 DIO instance.
59 * @param reg_base The register base address of the device as returned by the PCI BIOS.
60 * @param dio_idx The index of the DIO on the device.
61 * @param ctrl_reg_lock Pointer to spin lock protecting the control register and from concurrent access.
63 * @return Pointer to new instance on success.\n
66 me1000_dio_subdevice_t *me1000_dio_constructor(uint32_t reg_base,
68 spinlock_t * ctrl_reg_lock);