David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me1400_device.c |
| 3 | * |
| 4 | * @brief ME-1400 device family instance. |
| 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 _ME1400_DEVICE_H_ |
| 28 | #define _ME1400_DEVICE_H_ |
| 29 | |
| 30 | #include "metypes.h" |
| 31 | #include "medefines.h" |
| 32 | #include "meinternal.h" |
| 33 | |
| 34 | #include "medevice.h" |
| 35 | |
| 36 | #ifdef __KERNEL__ |
| 37 | |
| 38 | /** |
| 39 | * @brief Structure to store device capabilities. |
| 40 | */ |
| 41 | typedef struct me1400_version { |
| 42 | uint16_t device_id; /**< The PCI device id of the device. */ |
| 43 | unsigned int dio_chips; /**< The number of 8255 chips on the device. */ |
| 44 | unsigned int ctr_chips; /**< The number of 8254 chips on the device. */ |
| 45 | unsigned int ext_irq_subdevices; /**< The number of external interrupt inputs on the device. */ |
| 46 | } me1400_version_t; |
| 47 | |
| 48 | /** |
| 49 | * @brief Defines for each ME-1400 device version its capabilities. |
| 50 | */ |
| 51 | static me1400_version_t me1400_versions[] = { |
| 52 | {PCI_DEVICE_ID_MEILHAUS_ME1400, 1, 0, 0}, |
| 53 | {PCI_DEVICE_ID_MEILHAUS_ME140A, 1, 1, 1}, |
| 54 | {PCI_DEVICE_ID_MEILHAUS_ME140B, 2, 2, 1}, |
| 55 | {PCI_DEVICE_ID_MEILHAUS_ME14E0, 1, 0, 0}, |
| 56 | {PCI_DEVICE_ID_MEILHAUS_ME14EA, 1, 1, 1}, |
| 57 | {PCI_DEVICE_ID_MEILHAUS_ME14EB, 2, 2, 1}, |
| 58 | {PCI_DEVICE_ID_MEILHAUS_ME140C, 1, 5, 1}, |
| 59 | {PCI_DEVICE_ID_MEILHAUS_ME140D, 2, 10, 1}, |
| 60 | {0} |
| 61 | }; |
| 62 | |
| 63 | #define ME1400_DEVICE_VERSIONS (sizeof(me1400_versions) / sizeof(me1400_version_t) - 1) /**< Returns the number of entries in #me1400_versions. */ |
| 64 | |
| 65 | /** |
| 66 | * @brief Returns the index of the device entry in #me1400_versions. |
| 67 | * |
| 68 | * @param device_id The PCI device id of the device to query. |
| 69 | * @return The index of the device in #me1400_versions. |
| 70 | */ |
| 71 | static inline unsigned int me1400_versions_get_device_index(uint16_t device_id) |
| 72 | { |
| 73 | unsigned int i; |
| 74 | for (i = 0; i < ME1400_DEVICE_VERSIONS; i++) |
| 75 | if (me1400_versions[i].device_id == device_id) |
| 76 | break; |
| 77 | return i; |
| 78 | } |
| 79 | |
| 80 | #define ME1400_MAX_8254 10 /**< The maximum number of 8254 counter subdevices available on any ME-1400 device. */ |
| 81 | #define ME1400_MAX_8255 2 /**< The maximum number of 8255 digital i/o subdevices available on any ME-1400 device. */ |
| 82 | |
| 83 | /** |
| 84 | * @brief The ME-1400 device class. |
| 85 | */ |
| 86 | typedef struct me1400_device { |
| 87 | me_device_t base; /**< The Meilhaus device base class. */ |
| 88 | |
| 89 | spinlock_t clk_src_reg_lock; /**< Guards the 8254 clock source registers. */ |
| 90 | spinlock_t ctr_ctrl_reg_lock[ME1400_MAX_8254]; /**< Guards the 8254 ctrl registers. */ |
| 91 | |
| 92 | int dio_current_mode[ME1400_MAX_8255]; /**< Saves the current mode setting of a single 8255 DIO chip. */ |
| 93 | spinlock_t dio_ctrl_reg_lock[ME1400_MAX_8255]; /**< Guards the 8255 ctrl register and #dio_current_mode. */ |
| 94 | } me1400_device_t; |
| 95 | |
| 96 | /** |
| 97 | * @brief The ME-1400 device class constructor. |
| 98 | * |
| 99 | * @param pci_device The pci device structure given by the PCI subsystem. |
| 100 | * |
| 101 | * @return On succes a new ME-1400 device instance. \n |
| 102 | * NULL on error. |
| 103 | */ |
| 104 | me_device_t *me1400_pci_constructor(struct pci_dev *pci_device) |
| 105 | __attribute__ ((weak)); |
| 106 | |
| 107 | #endif |
| 108 | #endif |