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/**
* @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
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