/**
* @file me1600_device.c
*
* @brief ME-1600 device class implementation.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
* @author Krzysztof Gantzke (k.gantzke@meilhaus.de)
*/
/*
* 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 __KERNEL__
# define __KERNEL__
#endif
#ifndef MODULE
# define MODULE
#endif
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include "meids.h"
#include "meerror.h"
#include "mecommon.h"
#include "meinternal.h"
#include "medebug.h"
#include "medevice.h"
#include "mesubdevice.h"
#include "me1600_device.h"
static void me1600_set_registry(me1600_device_t *subdevice, uint32_t reg_base);
static void me1600_destructor(struct me_device *device);
/**
* @brief Global variable.
* This is working queue for runing a separate atask that will be responsible for work status (start, stop, timeouts).
*/
static struct workqueue_struct *me1600_workqueue;
me_device_t *me1600_pci_constructor(struct pci_dev *pci_device)
{
int err;
me1600_device_t *me1600_device;
me_subdevice_t *subdevice;
unsigned int chip_idx;
int i;
PDEBUG("executed.\n");
// Allocate structure for device instance.
me1600_device = kmalloc(sizeof(me1600_device_t), GFP_KERNEL);
if (!me1600_device) {
PERROR("Cannot get memory for device instance.\n");
return NULL;
}
memset(me1600_device, 0, sizeof(me1600_device_t));
// Initialize base class structure.
err = me_device_pci_init((me_device_t *) me1600_device, pci_device);
if (err) {
kfree(me1600_device);
PERROR("Cannot initialize device base class.\n");
return NULL;
}
// Initialize spin lock .
spin_lock_init(&me1600_device->config_regs_lock);
spin_lock_init(&me1600_device->ao_shadows_lock);
// Get the number of analog output subdevices.
chip_idx =
me1600_versions_get_device_index(me1600_device->base.info.pci.
device_id);
// Create shadow instance.
me1600_device->ao_regs_shadows.count =
me1600_versions[chip_idx].ao_chips;
me1600_device->ao_regs_shadows.registry =
kmalloc(me1600_versions[chip_idx].ao_chips * sizeof(unsigned long),
GFP_KERNEL);
me1600_set_registry(me1600_device,
me1600_device->base.info.pci.reg_bases[2]);
me1600_device->ao_regs_shadows.shadow =
kmalloc(me1600_versions[chip_idx].ao_chips * sizeof(uint16_t),
GFP_KERNEL);
me1600_device->ao_regs_shadows.mirror =
kmalloc(me1600_versions[chip_idx].ao_chips * sizeof(uint16_t),
GFP_KERNEL);
// Create subdevice instances.
for (i = 0; i < me1600_versions[chip_idx].ao_chips; i++) {
subdevice =
(me_subdevice_t *) me1600_ao_constructor(me1600_device->
base.info.pci.
reg_bases[2], i,
((me1600_versions
[chip_idx].curr >
i) ? 1 : 0),
&me1600_device->
config_regs_lock,
&me1600_device->
ao_shadows_lock,
&me1600_device->
ao_regs_shadows,
me1600_workqueue);
if (!subdevice) {
me_device_deinit((me_device_t *) me1600_device);
kfree(me1600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me1600_device->base.slist,
subdevice);
}
// Overwrite base class methods.
me1600_device->base.me_device_destructor = me1600_destructor;
return (me_device_t *) me1600_device;
}
EXPORT_SYMBOL(me1600_pci_constructor);
static void me1600_destructor(struct me_device *device)
{
me1600_device_t *me1600_device = (me1600_device_t *) device;
PDEBUG("executed.\n");
// Destroy shadow instance.
kfree(me1600_device->ao_regs_shadows.registry);
kfree(me1600_device->ao_regs_shadows.shadow);
kfree(me1600_device->ao_regs_shadows.mirror);
me_device_deinit((me_device_t *) me1600_device);
kfree(me1600_device);
}
static void me1600_set_registry(me1600_device_t *subdevice, uint32_t reg_base)
{ // Create shadow structure.
if (subdevice->ao_regs_shadows.count >= 1) {
subdevice->ao_regs_shadows.registry[0] =
(unsigned long)(reg_base + ME1600_CHANNEL_0_REG);
}
if (subdevice->ao_regs_shadows.count >= 2) {
subdevice->ao_regs_shadows.registry[1] =
(unsigned long)(reg_base + ME1600_CHANNEL_1_REG);
}
if (subdevice->ao_regs_shadows.count >= 3) {
subdevice->ao_regs_shadows.registry[2] =
(unsigned long)(reg_base + ME1600_CHANNEL_2_REG);
}
if (subdevice->ao_regs_shadows.count >= 4) {
subdevice->ao_regs_shadows.registry[3] =
(unsigned long)(reg_base + ME1600_CHANNEL_3_REG);
}
if (subdevice->ao_regs_shadows.count >= 5) {
subdevice->ao_regs_shadows.registry[4] =
(unsigned long)(reg_base + ME1600_CHANNEL_4_REG);
}
if (subdevice->ao_regs_shadows.count >= 6) {
subdevice->ao_regs_shadows.registry[5] =
(unsigned long)(reg_base + ME1600_CHANNEL_5_REG);
}
if (subdevice->ao_regs_shadows.count >= 7) {
subdevice->ao_regs_shadows.registry[6] =
(unsigned long)(reg_base + ME1600_CHANNEL_6_REG);
}
if (subdevice->ao_regs_shadows.count >= 8) {
subdevice->ao_regs_shadows.registry[7] =
(unsigned long)(reg_base + ME1600_CHANNEL_7_REG);
}
if (subdevice->ao_regs_shadows.count >= 9) {
subdevice->ao_regs_shadows.registry[8] =
(unsigned long)(reg_base + ME1600_CHANNEL_8_REG);
}
if (subdevice->ao_regs_shadows.count >= 10) {
subdevice->ao_regs_shadows.registry[9] =
(unsigned long)(reg_base + ME1600_CHANNEL_9_REG);
}
if (subdevice->ao_regs_shadows.count >= 11) {
subdevice->ao_regs_shadows.registry[10] =
(unsigned long)(reg_base + ME1600_CHANNEL_10_REG);
}
if (subdevice->ao_regs_shadows.count >= 12) {
subdevice->ao_regs_shadows.registry[11] =
(unsigned long)(reg_base + ME1600_CHANNEL_11_REG);
}
if (subdevice->ao_regs_shadows.count >= 13) {
subdevice->ao_regs_shadows.registry[12] =
(unsigned long)(reg_base + ME1600_CHANNEL_12_REG);
}
if (subdevice->ao_regs_shadows.count >= 14) {
subdevice->ao_regs_shadows.registry[13] =
(unsigned long)(reg_base + ME1600_CHANNEL_13_REG);
}
if (subdevice->ao_regs_shadows.count >= 15) {
subdevice->ao_regs_shadows.registry[14] =
(unsigned long)(reg_base + ME1600_CHANNEL_14_REG);
}
if (subdevice->ao_regs_shadows.count >= 16) {
subdevice->ao_regs_shadows.registry[15] =
(unsigned long)(reg_base + ME1600_CHANNEL_15_REG);
}
if (subdevice->ao_regs_shadows.count > 16) {
PERROR("More than 16 outputs! (%d)\n",
subdevice->ao_regs_shadows.count);
}
}
// Init and exit of module.
static int __init me1600_init(void)
{
PDEBUG("executed\n.");
me1600_workqueue = create_singlethread_workqueue("me1600");
return 0;
}
static void __exit me1600_exit(void)
{
PDEBUG("executed\n.");
flush_workqueue(me1600_workqueue);
destroy_workqueue(me1600_workqueue);
}
module_init(me1600_init);
module_exit(me1600_exit);
// Administrative stuff for modinfo.
MODULE_AUTHOR
("Guenter Gebhardt <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>");
MODULE_DESCRIPTION("Device Driver Module for ME-1600 Device");
MODULE_SUPPORTED_DEVICE("Meilhaus ME-1600 Devices");
MODULE_LICENSE("GPL");
