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/**
* @file me4600_device.c
*
* @brief ME-4600 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 "me4600_device.h"
#include "meplx_reg.h"
#include "mefirmware.h"
#include "mesubdevice.h"
#include "me4600_do.h"
#include "me4600_di.h"
#include "me4600_dio.h"
#include "me8254.h"
#include "me4600_ai.h"
#include "me4600_ao.h"
#include "me4600_ext_irq.h"
/**
* @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 *me4600_workqueue;
#ifdef BOSCH
me_device_t *me4600_pci_constructor(struct pci_dev *pci_device, int me_bosch_fw)
#else //~BOSCH
me_device_t *me4600_pci_constructor(struct pci_dev *pci_device)
#endif //BOSCH
{
me4600_device_t *me4600_device;
me_subdevice_t *subdevice;
unsigned int version_idx;
int err;
int i;
PDEBUG("executed.\n");
// Allocate structure for device instance.
me4600_device = kmalloc(sizeof(me4600_device_t), GFP_KERNEL);
if (!me4600_device) {
PERROR("Cannot get memory for ME-4600 device instance.\n");
return NULL;
}
memset(me4600_device, 0, sizeof(me4600_device_t));
// Initialize base class structure.
err = me_device_pci_init((me_device_t *) me4600_device, pci_device);
if (err) {
kfree(me4600_device);
PERROR("Cannot initialize device base class.\n");
return NULL;
}
// Download the xilinx firmware.
if (me4600_device->base.info.pci.device_id == PCI_DEVICE_ID_MEILHAUS_ME4610) { //Jekyll <=> me4610
err =
me_xilinx_download(me4600_device->base.info.pci.
reg_bases[1],
me4600_device->base.info.pci.
reg_bases[5], &pci_device->dev,
"me4610.bin");
} else { // General me4600 firmware
#ifdef BOSCH
err =
me_xilinx_download(me4600_device->base.info.pci.
reg_bases[1],
me4600_device->base.info.pci.
reg_bases[5], &pci_device->dev,
(me_bosch_fw) ? "me4600_bosch.bin" :
"me4600.bin");
#else //~BOSCH
err =
me_xilinx_download(me4600_device->base.info.pci.
reg_bases[1],
me4600_device->base.info.pci.
reg_bases[5], &pci_device->dev,
"me4600.bin");
#endif
}
if (err) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot download firmware.\n");
return NULL;
}
// Get the index in the device version information table.
version_idx =
me4600_versions_get_device_index(me4600_device->base.info.pci.
device_id);
// Initialize spin locks.
spin_lock_init(&me4600_device->preload_reg_lock);
me4600_device->preload_flags = 0;
spin_lock_init(&me4600_device->dio_lock);
spin_lock_init(&me4600_device->ai_ctrl_lock);
spin_lock_init(&me4600_device->ctr_ctrl_reg_lock);
spin_lock_init(&me4600_device->ctr_clk_src_reg_lock);
// Create digital input instances.
for (i = 0; i < me4600_versions[version_idx].di_subdevices; i++) {
subdevice =
(me_subdevice_t *) me4600_di_constructor(me4600_device->
base.info.pci.
reg_bases[2],
&me4600_device->
dio_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create digital output instances.
for (i = 0; i < me4600_versions[version_idx].do_subdevices; i++) {
subdevice =
(me_subdevice_t *) me4600_do_constructor(me4600_device->
base.info.pci.
reg_bases[2],
&me4600_device->
dio_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create digital input/output instances.
for (i = 0; i < me4600_versions[version_idx].dio_subdevices; i++) {
subdevice =
(me_subdevice_t *) me4600_dio_constructor(me4600_device->
base.info.pci.
reg_bases[2],
me4600_versions
[version_idx].
do_subdevices +
me4600_versions
[version_idx].
di_subdevices + i,
&me4600_device->
dio_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create analog input instances.
for (i = 0; i < me4600_versions[version_idx].ai_subdevices; i++) {
subdevice =
(me_subdevice_t *) me4600_ai_constructor(me4600_device->
base.info.pci.
reg_bases[2],
me4600_versions
[version_idx].
ai_channels,
me4600_versions
[version_idx].
ai_ranges,
me4600_versions
[version_idx].
ai_isolated,
me4600_versions
[version_idx].
ai_sh,
me4600_device->
base.irq,
&me4600_device->
ai_ctrl_lock,
me4600_workqueue);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create analog output instances.
for (i = 0; i < me4600_versions[version_idx].ao_subdevices; i++) {
#ifdef BOSCH
subdevice =
(me_subdevice_t *) me4600_ao_constructor(me4600_device->
base.info.pci.
reg_bases[2],
&me4600_device->
preload_reg_lock,
&me4600_device->
preload_flags, i,
me4600_versions
[version_idx].
ao_fifo,
me4600_device->
base.irq);
#else //~BOSCH
subdevice =
(me_subdevice_t *) me4600_ao_constructor(me4600_device->
base.info.pci.
reg_bases[2],
&me4600_device->
preload_reg_lock,
&me4600_device->
preload_flags, i,
me4600_versions
[version_idx].
ao_fifo,
me4600_device->
base.irq,
me4600_workqueue);
#endif
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create counter instances.
for (i = 0; i < me4600_versions[version_idx].ctr_subdevices; i++) {
subdevice =
(me_subdevice_t *) me8254_constructor(me4600_device->base.
info.pci.device_id,
me4600_device->base.
info.pci.reg_bases[3],
0, i,
&me4600_device->
ctr_ctrl_reg_lock,
&me4600_device->
ctr_clk_src_reg_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
// Create external interrupt instances.
for (i = 0; i < me4600_versions[version_idx].ext_irq_subdevices; i++) {
subdevice =
(me_subdevice_t *)
me4600_ext_irq_constructor(me4600_device->base.info.pci.
reg_bases[2],
me4600_device->base.irq,
&me4600_device->ai_ctrl_lock);
if (!subdevice) {
me_device_deinit((me_device_t *) me4600_device);
kfree(me4600_device);
PERROR("Cannot get memory for subdevice.\n");
return NULL;
}
me_slist_add_subdevice_tail(&me4600_device->base.slist,
subdevice);
}
return (me_device_t *) me4600_device;
}
EXPORT_SYMBOL(me4600_pci_constructor);
// Init and exit of module.
static int __init me4600_init(void)
{
PDEBUG("executed.\n");
#ifndef BOSCH
me4600_workqueue = create_singlethread_workqueue("me4600");
#endif
return 0;
}
static void __exit me4600_exit(void)
{
PDEBUG("executed.\n");
#ifndef BOSCH
flush_workqueue(me4600_workqueue);
destroy_workqueue(me4600_workqueue);
#endif
}
module_init(me4600_init);
module_exit(me4600_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-46xx Devices");
MODULE_SUPPORTED_DEVICE("Meilhaus ME-46xx Devices");
MODULE_LICENSE("GPL");
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