![Alexander Beregalov](/assets/img/avatar_default.png)
Cc: David Kiliani <mail@davidkiliani.de> Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
210 lines
5.4 KiB
C
210 lines
5.4 KiB
C
/**
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* @file me6000_device.c
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*
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* @brief Device class template implementation.
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* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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* @author Guenter Gebhardt
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* @author Krzysztof Gantzke (k.gantzke@meilhaus.de)
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*/
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/*
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* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __KERNEL__
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# define __KERNEL__
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#endif
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#ifndef MODULE
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# define MODULE
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#endif
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include "meids.h"
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#include "meerror.h"
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#include "mecommon.h"
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#include "meinternal.h"
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#include "mefirmware.h"
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#include "mesubdevice.h"
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#include "medebug.h"
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#include "medevice.h"
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#include "me6000_reg.h"
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#include "me6000_device.h"
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#include "meplx_reg.h"
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#include "me6000_dio.h"
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#include "me6000_ao.h"
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/**
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* @brief Global variable.
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* This is working queue for runing a separate atask that will be responsible for work status (start, stop, timeouts).
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*/
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static struct workqueue_struct *me6000_workqueue;
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me_device_t *me6000_pci_constructor(struct pci_dev *pci_device)
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{
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me6000_device_t *me6000_device;
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me_subdevice_t *subdevice;
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unsigned int version_idx;
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int err;
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int i;
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int high_range = 0;
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int fifo;
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PDEBUG("executed.\n");
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// Allocate structure for device instance.
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me6000_device = kmalloc(sizeof(me6000_device_t), GFP_KERNEL);
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if (!me6000_device) {
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PERROR("Cannot get memory for device instance.\n");
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return NULL;
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}
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memset(me6000_device, 0, sizeof(me6000_device_t));
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// Initialize base class structure.
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err = me_device_pci_init((me_device_t *) me6000_device, pci_device);
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if (err) {
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kfree(me6000_device);
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PERROR("Cannot initialize device base class.\n");
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return NULL;
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}
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/* Download the xilinx firmware */
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err = me_xilinx_download(me6000_device->base.info.pci.reg_bases[1],
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me6000_device->base.info.pci.reg_bases[2],
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&pci_device->dev, "me6000.bin");
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if (err) {
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me_device_deinit((me_device_t *) me6000_device);
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kfree(me6000_device);
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PERROR("Can't download firmware.\n");
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return NULL;
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}
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/* Get the index in the device version information table. */
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version_idx =
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me6000_versions_get_device_index(me6000_device->base.info.pci.
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device_id);
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// Initialize spin lock .
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spin_lock_init(&me6000_device->preload_reg_lock);
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spin_lock_init(&me6000_device->dio_ctrl_reg_lock);
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/* Create digital input/output instances. */
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for (i = 0; i < me6000_versions[version_idx].dio_subdevices; i++) {
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subdevice =
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(me_subdevice_t *) me6000_dio_constructor(me6000_device->
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base.info.pci.
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reg_bases[3], i,
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&me6000_device->
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dio_ctrl_reg_lock);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me6000_device);
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kfree(me6000_device);
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PERROR("Cannot get memory for subdevice.\n");
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return NULL;
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}
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me_slist_add_subdevice_tail(&me6000_device->base.slist,
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subdevice);
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}
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/* Create analog output instances. */
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for (i = 0; i < me6000_versions[version_idx].ao_subdevices; i++) {
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high_range = ((i == 8)
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&&
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((me6000_device->base.info.pci.device_id ==
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PCI_DEVICE_ID_MEILHAUS_ME6359)
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|| (me6000_device->base.info.pci.device_id ==
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PCI_DEVICE_ID_MEILHAUS_ME6259)
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)
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)? 1 : 0;
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fifo =
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(i <
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me6000_versions[version_idx].
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ao_fifo) ? ME6000_AO_HAS_FIFO : 0x0;
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fifo |= (i < 4) ? ME6000_AO_EXTRA_HARDWARE : 0x0;
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subdevice =
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(me_subdevice_t *) me6000_ao_constructor(me6000_device->
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base.info.pci.
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reg_bases[2],
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&me6000_device->
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preload_reg_lock,
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&me6000_device->
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preload_flags,
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&me6000_device->
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triggering_flags,
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i, fifo,
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me6000_device->
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base.irq,
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high_range,
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me6000_workqueue);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me6000_device);
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kfree(me6000_device);
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PERROR("Cannot get memory for subdevice.\n");
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return NULL;
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}
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me_slist_add_subdevice_tail(&me6000_device->base.slist,
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subdevice);
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}
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return (me_device_t *) me6000_device;
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}
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EXPORT_SYMBOL(me6000_pci_constructor);
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// Init and exit of module.
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static int __init me6000_init(void)
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{
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PDEBUG("executed.\n");
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me6000_workqueue = create_singlethread_workqueue("me6000");
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return 0;
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}
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static void __exit me6000_exit(void)
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{
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PDEBUG("executed.\n");
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flush_workqueue(me6000_workqueue);
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destroy_workqueue(me6000_workqueue);
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}
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module_init(me6000_init);
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module_exit(me6000_exit);
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// Administrative stuff for modinfo.
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MODULE_AUTHOR
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("Guenter Gebhardt <g.gebhardt@meilhaus.de> & Krzysztof Gantzke <k.gantzke@meilhaus.de>");
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MODULE_DESCRIPTION("Device Driver Module for ME-6000 Device");
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MODULE_SUPPORTED_DEVICE("Meilhaus ME-6000 Devices");
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MODULE_LICENSE("GPL");
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