| David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me1000_dio.h |
| 3 | * |
| 4 | * @brief Meilhaus ME-1000 digital i/o implementation. |
| 5 | * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 6 | * @author Guenter Gebhardt |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 11 | * |
| 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. |
| 16 | * |
| 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. |
| 21 | * |
| 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. |
| 25 | */ |
| 26 | |
| 27 | #ifndef _ME1000_DIO_H_ |
| 28 | #define _ME1000_DIO_H_ |
| 29 | |
| 30 | #include "mesubdevice.h" |
| 31 | #include "meslock.h" |
| 32 | |
| 33 | #ifdef __KERNEL__ |
| 34 | |
| 35 | /** |
| 36 | * @brief The ME-1000 DIO subdevice class. |
| 37 | */ |
| 38 | typedef struct me1000_dio_subdevice { |
| 39 | /* Inheritance */ |
| 40 | me_subdevice_t base; /**< The subdevice base class. */ |
| 41 | |
| 42 | /* Attributes */ |
| 43 | // uint32_t magic; /**< The magic number unique for this structure. */ |
| 44 | |
| 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. */ |
| 48 | |
| 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; |
| 53 | #endif |
| 54 | } me1000_dio_subdevice_t; |
| 55 | |
| 56 | /** |
| 57 | * @brief The constructor to generate a ME-1000 DIO instance. |
| 58 | * |
| 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. |
| 62 | * |
| 63 | * @return Pointer to new instance on success.\n |
| 64 | * NULL on error. |
| 65 | */ |
| 66 | me1000_dio_subdevice_t *me1000_dio_constructor(uint32_t reg_base, |
| 67 | unsigned int dio_idx, |
| 68 | spinlock_t * ctrl_reg_lock); |
| 69 | |
| 70 | #endif |
| 71 | #endif |