/** * @file me1400_device.c * * @brief ME-1400 device family instance. * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) * @author Guenter Gebhardt */ /* * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef _ME1400_DEVICE_H_ #define _ME1400_DEVICE_H_ #include "metypes.h" #include "medefines.h" #include "meinternal.h" #include "medevice.h" #ifdef __KERNEL__ /** * @brief Structure to store device capabilities. */ typedef struct me1400_version { uint16_t device_id; /**< The PCI device id of the device. */ unsigned int dio_chips; /**< The number of 8255 chips on the device. */ unsigned int ctr_chips; /**< The number of 8254 chips on the device. */ unsigned int ext_irq_subdevices; /**< The number of external interrupt inputs on the device. */ } me1400_version_t; /** * @brief Defines for each ME-1400 device version its capabilities. */ static me1400_version_t me1400_versions[] = { {PCI_DEVICE_ID_MEILHAUS_ME1400, 1, 0, 0}, {PCI_DEVICE_ID_MEILHAUS_ME140A, 1, 1, 1}, {PCI_DEVICE_ID_MEILHAUS_ME140B, 2, 2, 1}, {PCI_DEVICE_ID_MEILHAUS_ME14E0, 1, 0, 0}, {PCI_DEVICE_ID_MEILHAUS_ME14EA, 1, 1, 1}, {PCI_DEVICE_ID_MEILHAUS_ME14EB, 2, 2, 1}, {PCI_DEVICE_ID_MEILHAUS_ME140C, 1, 5, 1}, {PCI_DEVICE_ID_MEILHAUS_ME140D, 2, 10, 1}, {0} }; #define ME1400_DEVICE_VERSIONS (sizeof(me1400_versions) / sizeof(me1400_version_t) - 1) /**< Returns the number of entries in #me1400_versions. */ /** * @brief Returns the index of the device entry in #me1400_versions. * * @param device_id The PCI device id of the device to query. * @return The index of the device in #me1400_versions. */ static inline unsigned int me1400_versions_get_device_index(uint16_t device_id) { unsigned int i; for (i = 0; i < ME1400_DEVICE_VERSIONS; i++) if (me1400_versions[i].device_id == device_id) break; return i; } #define ME1400_MAX_8254 10 /**< The maximum number of 8254 counter subdevices available on any ME-1400 device. */ #define ME1400_MAX_8255 2 /**< The maximum number of 8255 digital i/o subdevices available on any ME-1400 device. */ /** * @brief The ME-1400 device class. */ typedef struct me1400_device { me_device_t base; /**< The Meilhaus device base class. */ spinlock_t clk_src_reg_lock; /**< Guards the 8254 clock source registers. */ spinlock_t ctr_ctrl_reg_lock[ME1400_MAX_8254]; /**< Guards the 8254 ctrl registers. */ int dio_current_mode[ME1400_MAX_8255]; /**< Saves the current mode setting of a single 8255 DIO chip. */ spinlock_t dio_ctrl_reg_lock[ME1400_MAX_8255]; /**< Guards the 8255 ctrl register and #dio_current_mode. */ } me1400_device_t; /** * @brief The ME-1400 device class constructor. * * @param pci_device The pci device structure given by the PCI subsystem. * * @return On succes a new ME-1400 device instance. \n * NULL on error. */ me_device_t *me1400_pci_constructor(struct pci_dev *pci_device) __attribute__ ((weak)); #endif #endif