![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>
255 lines
7 KiB
C
255 lines
7 KiB
C
/**
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* @file me1400_device.c
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*
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* @brief ME-1400 device instance.
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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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/*
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* User application could also include the kernel header files. But the
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* real kernel functions are protected by #ifdef __KERNEL__.
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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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/*
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* This must be defined before module.h is included. Not needed, when
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* it is a built in driver.
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*/
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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 <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/version.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 "medebug.h"
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#include "me1400_device.h"
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#include "me8254.h"
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#include "me8254_reg.h"
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#include "me8255.h"
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#include "me1400_ext_irq.h"
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me_device_t *me1400_pci_constructor(struct pci_dev *pci_device)
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{
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int err;
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me1400_device_t *me1400_device;
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me_subdevice_t *subdevice;
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unsigned int version_idx;
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unsigned int me8255_idx;
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unsigned int dio_idx;
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unsigned int me8254_idx;
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unsigned int ctr_idx;
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unsigned int ext_irq_idx;
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PDEBUG("executed.\n");
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// Allocate structure for device instance.
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me1400_device = kmalloc(sizeof(me1400_device_t), GFP_KERNEL);
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if (!me1400_device) {
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PERROR("Cannot get memory for 1400ate device instance.\n");
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return NULL;
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}
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memset(me1400_device, 0, sizeof(me1400_device_t));
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// Initialize base class structure.
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err = me_device_pci_init((me_device_t *) me1400_device, pci_device);
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if (err) {
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kfree(me1400_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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/* Check for ME1400 extension device. If detected we fake a ME-1400 D device id. */
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if (me1400_device->base.info.pci.device_id ==
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PCI_DEVICE_ID_MEILHAUS_ME140C) {
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uint8_t ctrl;
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ctrl =
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inb(me1400_device->base.info.pci.reg_bases[2] +
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ME1400D_CLK_SRC_2_REG);
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PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n",
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me1400_device->base.info.pci.reg_bases[2],
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ME1400D_CLK_SRC_2_REG, ctrl);
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outb(ctrl | 0xF0,
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me1400_device->base.info.pci.reg_bases[2] +
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ME1400D_CLK_SRC_2_REG);
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PDEBUG_REG("xxx_reg outb(0x%X+0x%X)=0x%x\n",
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me1400_device->base.info.pci.reg_bases[2],
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ME1400D_CLK_SRC_2_REG, ctrl | 0xF0);
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ctrl =
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inb(me1400_device->base.info.pci.reg_bases[2] +
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ME1400D_CLK_SRC_2_REG);
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PDEBUG_REG("xxx_reg inb(0x%X+0x%X)=0x%x\n",
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me1400_device->base.info.pci.reg_bases[2],
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ME1400D_CLK_SRC_2_REG, ctrl);
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if ((ctrl & 0xF0) == 0xF0) {
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PINFO("ME1400 D detected.\n");
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me1400_device->base.info.pci.device_id =
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PCI_DEVICE_ID_MEILHAUS_ME140D;
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}
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}
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/* Initialize global stuff of digital i/o subdevices. */
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for (me8255_idx = 0; me8255_idx < ME1400_MAX_8255; me8255_idx++) {
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me1400_device->dio_current_mode[me8255_idx] = 0;
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spin_lock_init(&me1400_device->dio_ctrl_reg_lock[me8255_idx]);
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}
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/* Initialize global stuff of counter subdevices. */
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spin_lock_init(&me1400_device->clk_src_reg_lock);
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for (me8254_idx = 0; me8254_idx < ME1400_MAX_8254; me8254_idx++)
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spin_lock_init(&me1400_device->ctr_ctrl_reg_lock[me8254_idx]);
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/* Get the index in the device version information table. */
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version_idx =
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me1400_versions_get_device_index(me1400_device->base.info.pci.
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device_id);
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/* Generate DIO subdevice instances. */
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for (me8255_idx = 0;
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me8255_idx < me1400_versions[version_idx].dio_chips;
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me8255_idx++) {
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for (dio_idx = 0; dio_idx < 3; dio_idx++) {
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subdevice =
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(me_subdevice_t *)
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me8255_constructor(me1400_versions[version_idx].
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device_id,
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me1400_device->base.info.pci.
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reg_bases[2], me8255_idx,
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dio_idx,
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&me1400_device->
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dio_current_mode[me8255_idx],
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&me1400_device->
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dio_ctrl_reg_lock[me8255_idx]);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me1400_device);
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kfree(me1400_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(&me1400_device->base.slist,
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subdevice);
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}
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}
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/* Generate counter subdevice instances. */
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for (me8254_idx = 0;
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me8254_idx < me1400_versions[version_idx].ctr_chips;
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me8254_idx++) {
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for (ctr_idx = 0; ctr_idx < 3; ctr_idx++) {
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subdevice =
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(me_subdevice_t *)
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me8254_constructor(me1400_device->base.info.pci.
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device_id,
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me1400_device->base.info.pci.
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reg_bases[2], me8254_idx,
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ctr_idx,
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&me1400_device->
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ctr_ctrl_reg_lock[me8254_idx],
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&me1400_device->
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clk_src_reg_lock);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me1400_device);
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kfree(me1400_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(&me1400_device->base.slist,
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subdevice);
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}
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}
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/* Generate external interrupt subdevice instances. */
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for (ext_irq_idx = 0;
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ext_irq_idx < me1400_versions[version_idx].ext_irq_subdevices;
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ext_irq_idx++) {
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subdevice =
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(me_subdevice_t *)
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me1400_ext_irq_constructor(me1400_device->base.info.pci.
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device_id,
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me1400_device->base.info.pci.
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reg_bases[1],
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me1400_device->base.info.pci.
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reg_bases[2],
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&me1400_device->clk_src_reg_lock,
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me1400_device->base.irq);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me1400_device);
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kfree(me1400_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(&me1400_device->base.slist,
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subdevice);
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}
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return (me_device_t *) me1400_device;
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}
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EXPORT_SYMBOL(me1400_pci_constructor);
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// Init and exit of module.
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static int __init me1400_init(void)
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{
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PDEBUG("executed.\n");
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return 0;
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}
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static void __exit me1400_exit(void)
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{
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PDEBUG("executed.\n");
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}
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module_init(me1400_init);
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module_exit(me1400_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 Meilhaus ME-14xx devices");
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MODULE_SUPPORTED_DEVICE("Meilhaus ME-14xx MIO devices");
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MODULE_LICENSE("GPL");
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