![Andre Haupt](/assets/img/avatar_default.png)
This eliminates checkpatch.pl warnings, that struct file_operations is usually const. The structs me4000_ai_fops_array and me4000_ao_fops_array are not modified and thus also made const. Signed-off-by: Andre Haupt <andre@bitwigglers.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
6110 lines
173 KiB
C
6110 lines
173 KiB
C
/* Device driver for Meilhaus ME-4000 board family.
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* ================================================
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*
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* Copyright (C) 2003 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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* Author: Guenter Gebhardt <g.gebhardt@meilhaus.de>
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*/
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#include <linux/module.h>
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#include <linux/fs.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/mm.h>
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#include <linux/unistd.h>
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#include <linux/list.h>
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#include <linux/proc_fs.h>
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#include <linux/types.h>
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#include <linux/poll.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <asm/pgtable.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include <asm/system.h>
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/* Include-File for the Meilhaus ME-4000 I/O board */
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#include "me4000.h"
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#include "me4000_firmware.h"
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#include "me4610_firmware.h"
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/* Administrative stuff for modinfo */
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MODULE_AUTHOR("Guenter Gebhardt <g.gebhardt@meilhaus.de>");
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MODULE_DESCRIPTION
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("Device Driver Module for Meilhaus ME-4000 boards version 1.0.5");
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MODULE_SUPPORTED_DEVICE("Meilhaus ME-4000 Multi I/O boards");
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MODULE_LICENSE("GPL");
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/* Board specific data are kept in a global list */
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static LIST_HEAD(me4000_board_info_list);
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/* Major Device Numbers. 0 means to get it automatically from the System */
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static int me4000_ao_major_driver_no;
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static int me4000_ai_major_driver_no;
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static int me4000_dio_major_driver_no;
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static int me4000_cnt_major_driver_no;
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static int me4000_ext_int_major_driver_no;
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/* Let the user specify a custom major driver number */
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module_param(me4000_ao_major_driver_no, int, 0);
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MODULE_PARM_DESC(me4000_ao_major_driver_no,
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"Major driver number for analog output (default 0)");
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module_param(me4000_ai_major_driver_no, int, 0);
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MODULE_PARM_DESC(me4000_ai_major_driver_no,
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"Major driver number for analog input (default 0)");
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module_param(me4000_dio_major_driver_no, int, 0);
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MODULE_PARM_DESC(me4000_dio_major_driver_no,
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"Major driver number digital I/O (default 0)");
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module_param(me4000_cnt_major_driver_no, int, 0);
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MODULE_PARM_DESC(me4000_cnt_major_driver_no,
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"Major driver number for counter (default 0)");
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module_param(me4000_ext_int_major_driver_no, int, 0);
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MODULE_PARM_DESC(me4000_ext_int_major_driver_no,
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"Major driver number for external interrupt (default 0)");
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/*-----------------------------------------------------------------------------
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Board detection and initialization
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---------------------------------------------------------------------------*/
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static int me4000_probe(struct pci_dev *dev, const struct pci_device_id *id);
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static int me4000_xilinx_download(struct me4000_info *);
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static int me4000_reset_board(struct me4000_info *);
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static void clear_board_info_list(void);
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static void release_ao_contexts(struct me4000_info *board_info);
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/*-----------------------------------------------------------------------------
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Stuff used by all device parts
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---------------------------------------------------------------------------*/
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static int me4000_open(struct inode *, struct file *);
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static int me4000_release(struct inode *, struct file *);
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static int me4000_get_user_info(struct me4000_user_info *,
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struct me4000_info *board_info);
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static int me4000_read_procmem(char *, char **, off_t, int, int *, void *);
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/*-----------------------------------------------------------------------------
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Analog output stuff
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---------------------------------------------------------------------------*/
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static ssize_t me4000_ao_write_sing(struct file *, const char *, size_t,
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loff_t *);
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static ssize_t me4000_ao_write_wrap(struct file *, const char *, size_t,
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loff_t *);
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static ssize_t me4000_ao_write_cont(struct file *, const char *, size_t,
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loff_t *);
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static int me4000_ao_ioctl_sing(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_ao_ioctl_wrap(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_ao_ioctl_cont(struct inode *, struct file *, unsigned int,
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unsigned long);
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static unsigned int me4000_ao_poll_cont(struct file *, poll_table *);
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static int me4000_ao_fsync_cont(struct file *, struct dentry *, int);
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static int me4000_ao_start(unsigned long *, struct me4000_ao_context *);
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static int me4000_ao_stop(struct me4000_ao_context *);
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static int me4000_ao_immediate_stop(struct me4000_ao_context *);
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static int me4000_ao_timer_set_divisor(u32 *, struct me4000_ao_context *);
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static int me4000_ao_preload(struct me4000_ao_context *);
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static int me4000_ao_preload_update(struct me4000_ao_context *);
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static int me4000_ao_ex_trig_set_edge(int *, struct me4000_ao_context *);
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static int me4000_ao_ex_trig_enable(struct me4000_ao_context *);
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static int me4000_ao_ex_trig_disable(struct me4000_ao_context *);
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static int me4000_ao_prepare(struct me4000_ao_context *ao_info);
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static int me4000_ao_reset(struct me4000_ao_context *ao_info);
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static int me4000_ao_enable_do(struct me4000_ao_context *);
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static int me4000_ao_disable_do(struct me4000_ao_context *);
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static int me4000_ao_fsm_state(int *, struct me4000_ao_context *);
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static int me4000_ao_simultaneous_ex_trig(struct me4000_ao_context *ao_context);
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static int me4000_ao_simultaneous_sw(struct me4000_ao_context *ao_context);
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static int me4000_ao_simultaneous_disable(struct me4000_ao_context *ao_context);
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static int me4000_ao_simultaneous_update(
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struct me4000_ao_channel_list *channels,
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struct me4000_ao_context *ao_context);
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static int me4000_ao_synchronous_ex_trig(struct me4000_ao_context *ao_context);
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static int me4000_ao_synchronous_sw(struct me4000_ao_context *ao_context);
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static int me4000_ao_synchronous_disable(struct me4000_ao_context *ao_context);
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static int me4000_ao_ex_trig_timeout(unsigned long *arg,
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struct me4000_ao_context *ao_context);
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static int me4000_ao_get_free_buffer(unsigned long *arg,
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struct me4000_ao_context *ao_context);
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/*-----------------------------------------------------------------------------
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Analog input stuff
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---------------------------------------------------------------------------*/
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static int me4000_ai_single(struct me4000_ai_single *,
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struct me4000_ai_context *);
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static int me4000_ai_ioctl_sing(struct inode *, struct file *, unsigned int,
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unsigned long);
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static ssize_t me4000_ai_read(struct file *, char *, size_t, loff_t *);
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static int me4000_ai_ioctl_sw(struct inode *, struct file *, unsigned int,
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unsigned long);
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static unsigned int me4000_ai_poll(struct file *, poll_table *);
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static int me4000_ai_fasync(int fd, struct file *file_p, int mode);
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static int me4000_ai_ioctl_ext(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_ai_prepare(struct me4000_ai_context *ai_context);
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static int me4000_ai_reset(struct me4000_ai_context *ai_context);
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static int me4000_ai_config(struct me4000_ai_config *,
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struct me4000_ai_context *);
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static int me4000_ai_start(struct me4000_ai_context *);
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static int me4000_ai_start_ex(unsigned long *, struct me4000_ai_context *);
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static int me4000_ai_stop(struct me4000_ai_context *);
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static int me4000_ai_immediate_stop(struct me4000_ai_context *);
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static int me4000_ai_ex_trig_enable(struct me4000_ai_context *);
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static int me4000_ai_ex_trig_disable(struct me4000_ai_context *);
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static int me4000_ai_ex_trig_setup(struct me4000_ai_trigger *,
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struct me4000_ai_context *);
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static int me4000_ai_sc_setup(struct me4000_ai_sc *arg,
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struct me4000_ai_context *ai_context);
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static int me4000_ai_offset_enable(struct me4000_ai_context *ai_context);
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static int me4000_ai_offset_disable(struct me4000_ai_context *ai_context);
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static int me4000_ai_fullscale_enable(struct me4000_ai_context *ai_context);
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static int me4000_ai_fullscale_disable(struct me4000_ai_context *ai_context);
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static int me4000_ai_fsm_state(int *arg, struct me4000_ai_context *ai_context);
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static int me4000_ai_get_count_buffer(unsigned long *arg,
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struct me4000_ai_context *ai_context);
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/*-----------------------------------------------------------------------------
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EEPROM stuff
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---------------------------------------------------------------------------*/
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static int me4000_eeprom_read(struct me4000_eeprom *arg,
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struct me4000_ai_context *ai_context);
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static int me4000_eeprom_write(struct me4000_eeprom *arg,
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struct me4000_ai_context *ai_context);
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/*-----------------------------------------------------------------------------
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Digital I/O stuff
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---------------------------------------------------------------------------*/
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static int me4000_dio_ioctl(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_dio_config(struct me4000_dio_config *,
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struct me4000_dio_context *);
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static int me4000_dio_get_byte(struct me4000_dio_byte *,
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struct me4000_dio_context *);
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static int me4000_dio_set_byte(struct me4000_dio_byte *,
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struct me4000_dio_context *);
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static int me4000_dio_reset(struct me4000_dio_context *);
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/*-----------------------------------------------------------------------------
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Counter stuff
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---------------------------------------------------------------------------*/
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static int me4000_cnt_ioctl(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_cnt_config(struct me4000_cnt_config *,
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struct me4000_cnt_context *);
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static int me4000_cnt_read(struct me4000_cnt *, struct me4000_cnt_context *);
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static int me4000_cnt_write(struct me4000_cnt *, struct me4000_cnt_context *);
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static int me4000_cnt_reset(struct me4000_cnt_context *);
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/*-----------------------------------------------------------------------------
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External interrupt routines
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---------------------------------------------------------------------------*/
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static int me4000_ext_int_ioctl(struct inode *, struct file *, unsigned int,
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unsigned long);
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static int me4000_ext_int_enable(struct me4000_ext_int_context *);
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static int me4000_ext_int_disable(struct me4000_ext_int_context *);
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static int me4000_ext_int_count(unsigned long *arg,
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struct me4000_ext_int_context *ext_int_context);
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static int me4000_ext_int_fasync(int fd, struct file *file_ptr, int mode);
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/*-----------------------------------------------------------------------------
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The interrupt service routines
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---------------------------------------------------------------------------*/
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static irqreturn_t me4000_ao_isr(int, void *);
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static irqreturn_t me4000_ai_isr(int, void *);
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static irqreturn_t me4000_ext_int_isr(int, void *);
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/*-----------------------------------------------------------------------------
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Inline functions
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---------------------------------------------------------------------------*/
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static inline int me4000_buf_count(struct me4000_circ_buf buf, int size)
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{
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return (buf.head - buf.tail) & (size - 1);
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}
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static inline int me4000_buf_space(struct me4000_circ_buf buf, int size)
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{
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return (buf.tail - (buf.head + 1)) & (size - 1);
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}
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static inline int me4000_values_to_end(struct me4000_circ_buf buf, int size)
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{
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int end;
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int n;
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end = size - buf.tail;
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n = (buf.head + end) & (size - 1);
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return (n < end) ? n : end;
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}
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static inline int me4000_space_to_end(struct me4000_circ_buf buf, int size)
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{
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int end;
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int n;
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end = size - 1 - buf.head;
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n = (end + buf.tail) & (size - 1);
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return (n <= end) ? n : (end + 1);
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}
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static inline void me4000_outb(unsigned char value, unsigned long port)
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{
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PORT_PDEBUG("--> 0x%02X port 0x%04lX\n", value, port);
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outb(value, port);
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}
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static inline void me4000_outl(unsigned long value, unsigned long port)
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{
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PORT_PDEBUG("--> 0x%08lX port 0x%04lX\n", value, port);
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outl(value, port);
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}
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static inline unsigned long me4000_inl(unsigned long port)
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{
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unsigned long value;
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value = inl(port);
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PORT_PDEBUG("<-- 0x%08lX port 0x%04lX\n", value, port);
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return value;
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}
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static inline unsigned char me4000_inb(unsigned long port)
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{
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unsigned char value;
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value = inb(port);
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PORT_PDEBUG("<-- 0x%08X port 0x%04lX\n", value, port);
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return value;
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}
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static struct pci_driver me4000_driver = {
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.name = ME4000_NAME,
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.id_table = me4000_pci_table,
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.probe = me4000_probe
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};
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static const struct file_operations me4000_ao_fops_sing = {
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.owner = THIS_MODULE,
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.write = me4000_ao_write_sing,
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.ioctl = me4000_ao_ioctl_sing,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ao_fops_wrap = {
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.owner = THIS_MODULE,
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.write = me4000_ao_write_wrap,
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.ioctl = me4000_ao_ioctl_wrap,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ao_fops_cont = {
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.owner = THIS_MODULE,
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.write = me4000_ao_write_cont,
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.poll = me4000_ao_poll_cont,
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.ioctl = me4000_ao_ioctl_cont,
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.open = me4000_open,
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.release = me4000_release,
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.fsync = me4000_ao_fsync_cont,
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};
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static const struct file_operations me4000_ai_fops_sing = {
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.owner = THIS_MODULE,
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.ioctl = me4000_ai_ioctl_sing,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ai_fops_cont_sw = {
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.owner = THIS_MODULE,
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.read = me4000_ai_read,
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.poll = me4000_ai_poll,
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.ioctl = me4000_ai_ioctl_sw,
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.open = me4000_open,
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.release = me4000_release,
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.fasync = me4000_ai_fasync,
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};
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static const struct file_operations me4000_ai_fops_cont_et = {
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.owner = THIS_MODULE,
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.read = me4000_ai_read,
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.poll = me4000_ai_poll,
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.ioctl = me4000_ai_ioctl_ext,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ai_fops_cont_et_value = {
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.owner = THIS_MODULE,
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.read = me4000_ai_read,
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.poll = me4000_ai_poll,
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.ioctl = me4000_ai_ioctl_ext,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ai_fops_cont_et_chanlist = {
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.owner = THIS_MODULE,
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.read = me4000_ai_read,
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.poll = me4000_ai_poll,
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.ioctl = me4000_ai_ioctl_ext,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_dio_fops = {
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.owner = THIS_MODULE,
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.ioctl = me4000_dio_ioctl,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_cnt_fops = {
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.owner = THIS_MODULE,
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.ioctl = me4000_cnt_ioctl,
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.open = me4000_open,
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.release = me4000_release,
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};
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static const struct file_operations me4000_ext_int_fops = {
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.owner = THIS_MODULE,
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.ioctl = me4000_ext_int_ioctl,
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.open = me4000_open,
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.release = me4000_release,
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.fasync = me4000_ext_int_fasync,
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};
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static const struct file_operations *me4000_ao_fops_array[] = {
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/* single operations */
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&me4000_ao_fops_sing,
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/* wraparound operations */
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&me4000_ao_fops_wrap,
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/* continuous operations */
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&me4000_ao_fops_cont,
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};
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static const struct file_operations *me4000_ai_fops_array[] = {
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/* single operations */
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&me4000_ai_fops_sing,
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/* continuous operations with software start */
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&me4000_ai_fops_cont_sw,
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/* continuous operations with external trigger */
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&me4000_ai_fops_cont_et,
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/* sample values by external trigger */
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&me4000_ai_fops_cont_et_value,
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/* work through one channel list by external trigger */
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&me4000_ai_fops_cont_et_chanlist,
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};
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static int __init me4000_init_module(void)
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{
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int result;
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CALL_PDEBUG("init_module() is executed\n");
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/* Register driver capabilities */
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result = pci_register_driver(&me4000_driver);
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PDEBUG("init_module():%d devices detected\n", result);
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if (result < 0) {
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printk(KERN_ERR "ME4000:init_module():Can't register driver\n");
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goto INIT_ERROR_1;
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}
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/* Allocate major number for analog output */
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result =
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register_chrdev(me4000_ao_major_driver_no, ME4000_AO_NAME,
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&me4000_ao_fops_sing);
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if (result < 0) {
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printk(KERN_ERR "ME4000:init_module():Can't get AO major no\n");
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goto INIT_ERROR_2;
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} else {
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me4000_ao_major_driver_no = result;
|
|
}
|
|
PDEBUG("init_module():Major driver number for AO = %ld\n",
|
|
me4000_ao_major_driver_no);
|
|
|
|
/* Allocate major number for analog input */
|
|
result =
|
|
register_chrdev(me4000_ai_major_driver_no, ME4000_AI_NAME,
|
|
&me4000_ai_fops_sing);
|
|
if (result < 0) {
|
|
printk(KERN_ERR "ME4000:init_module():Can't get AI major no\n");
|
|
goto INIT_ERROR_3;
|
|
} else {
|
|
me4000_ai_major_driver_no = result;
|
|
}
|
|
PDEBUG("init_module():Major driver number for AI = %ld\n",
|
|
me4000_ai_major_driver_no);
|
|
|
|
/* Allocate major number for digital I/O */
|
|
result =
|
|
register_chrdev(me4000_dio_major_driver_no, ME4000_DIO_NAME,
|
|
&me4000_dio_fops);
|
|
if (result < 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:init_module():Can't get DIO major no\n");
|
|
goto INIT_ERROR_4;
|
|
} else {
|
|
me4000_dio_major_driver_no = result;
|
|
}
|
|
PDEBUG("init_module():Major driver number for DIO = %ld\n",
|
|
me4000_dio_major_driver_no);
|
|
|
|
/* Allocate major number for counter */
|
|
result =
|
|
register_chrdev(me4000_cnt_major_driver_no, ME4000_CNT_NAME,
|
|
&me4000_cnt_fops);
|
|
if (result < 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:init_module():Can't get CNT major no\n");
|
|
goto INIT_ERROR_5;
|
|
} else {
|
|
me4000_cnt_major_driver_no = result;
|
|
}
|
|
PDEBUG("init_module():Major driver number for CNT = %ld\n",
|
|
me4000_cnt_major_driver_no);
|
|
|
|
/* Allocate major number for external interrupt */
|
|
result =
|
|
register_chrdev(me4000_ext_int_major_driver_no, ME4000_EXT_INT_NAME,
|
|
&me4000_ext_int_fops);
|
|
if (result < 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:init_module():Can't get major no for external interrupt\n");
|
|
goto INIT_ERROR_6;
|
|
} else {
|
|
me4000_ext_int_major_driver_no = result;
|
|
}
|
|
PDEBUG
|
|
("init_module():Major driver number for external interrupt = %ld\n",
|
|
me4000_ext_int_major_driver_no);
|
|
|
|
/* Create the /proc/me4000 entry */
|
|
if (!create_proc_read_entry
|
|
("me4000", 0, NULL, me4000_read_procmem, NULL)) {
|
|
result = -ENODEV;
|
|
printk(KERN_ERR
|
|
"ME4000:init_module():Can't create proc entry\n");
|
|
goto INIT_ERROR_7;
|
|
}
|
|
|
|
return 0;
|
|
|
|
INIT_ERROR_7:
|
|
unregister_chrdev(me4000_ext_int_major_driver_no, ME4000_EXT_INT_NAME);
|
|
|
|
INIT_ERROR_6:
|
|
unregister_chrdev(me4000_cnt_major_driver_no, ME4000_CNT_NAME);
|
|
|
|
INIT_ERROR_5:
|
|
unregister_chrdev(me4000_dio_major_driver_no, ME4000_DIO_NAME);
|
|
|
|
INIT_ERROR_4:
|
|
unregister_chrdev(me4000_ai_major_driver_no, ME4000_AI_NAME);
|
|
|
|
INIT_ERROR_3:
|
|
unregister_chrdev(me4000_ao_major_driver_no, ME4000_AO_NAME);
|
|
|
|
INIT_ERROR_2:
|
|
pci_unregister_driver(&me4000_driver);
|
|
clear_board_info_list();
|
|
|
|
INIT_ERROR_1:
|
|
return result;
|
|
}
|
|
|
|
module_init(me4000_init_module);
|
|
|
|
static void clear_board_info_list(void)
|
|
{
|
|
struct me4000_info *board_info, *board_info_safe;
|
|
struct me4000_ao_context *ao_context, *ao_context_safe;
|
|
|
|
/* Clear context lists */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
/* Clear analog output context list */
|
|
list_for_each_entry_safe(ao_context, ao_context_safe,
|
|
&board_info->ao_context_list, list) {
|
|
me4000_ao_reset(ao_context);
|
|
free_irq(ao_context->irq, ao_context);
|
|
kfree(ao_context->circ_buf.buf);
|
|
list_del(&ao_context->list);
|
|
kfree(ao_context);
|
|
}
|
|
|
|
/* Clear analog input context */
|
|
kfree(board_info->ai_context->circ_buf.buf);
|
|
kfree(board_info->ai_context);
|
|
|
|
/* Clear digital I/O context */
|
|
kfree(board_info->dio_context);
|
|
|
|
/* Clear counter context */
|
|
kfree(board_info->cnt_context);
|
|
|
|
/* Clear external interrupt context */
|
|
kfree(board_info->ext_int_context);
|
|
}
|
|
|
|
/* Clear the board info list */
|
|
list_for_each_entry_safe(board_info, board_info_safe,
|
|
&me4000_board_info_list, list) {
|
|
pci_release_regions(board_info->pci_dev_p);
|
|
list_del(&board_info->list);
|
|
kfree(board_info);
|
|
}
|
|
}
|
|
|
|
static int get_registers(struct pci_dev *dev, struct me4000_info *board_info)
|
|
{
|
|
|
|
/*--------------------------- plx regbase ---------------------------------*/
|
|
|
|
board_info->plx_regbase = pci_resource_start(dev, 1);
|
|
if (board_info->plx_regbase == 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:get_registers():PCI base address 1 is not available\n");
|
|
return -ENODEV;
|
|
}
|
|
board_info->plx_regbase_size = pci_resource_len(dev, 1);
|
|
|
|
PDEBUG
|
|
("get_registers():PLX configuration registers at address 0x%4lX [0x%4lX]\n",
|
|
board_info->plx_regbase, board_info->plx_regbase_size);
|
|
|
|
/*--------------------------- me4000 regbase ------------------------------*/
|
|
|
|
board_info->me4000_regbase = pci_resource_start(dev, 2);
|
|
if (board_info->me4000_regbase == 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:get_registers():PCI base address 2 is not available\n");
|
|
return -ENODEV;
|
|
}
|
|
board_info->me4000_regbase_size = pci_resource_len(dev, 2);
|
|
|
|
PDEBUG("get_registers():ME4000 registers at address 0x%4lX [0x%4lX]\n",
|
|
board_info->me4000_regbase, board_info->me4000_regbase_size);
|
|
|
|
/*--------------------------- timer regbase ------------------------------*/
|
|
|
|
board_info->timer_regbase = pci_resource_start(dev, 3);
|
|
if (board_info->timer_regbase == 0) {
|
|
printk(KERN_ERR
|
|
"ME4000:get_registers():PCI base address 3 is not available\n");
|
|
return -ENODEV;
|
|
}
|
|
board_info->timer_regbase_size = pci_resource_len(dev, 3);
|
|
|
|
PDEBUG("get_registers():Timer registers at address 0x%4lX [0x%4lX]\n",
|
|
board_info->timer_regbase, board_info->timer_regbase_size);
|
|
|
|
/*--------------------------- program regbase ------------------------------*/
|
|
|
|
board_info->program_regbase = pci_resource_start(dev, 5);
|
|
if (board_info->program_regbase == 0) {
|
|
printk(KERN_ERR
|
|
"get_registers():ME4000:PCI base address 5 is not available\n");
|
|
return -ENODEV;
|
|
}
|
|
board_info->program_regbase_size = pci_resource_len(dev, 5);
|
|
|
|
PDEBUG("get_registers():Program registers at address 0x%4lX [0x%4lX]\n",
|
|
board_info->program_regbase, board_info->program_regbase_size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int init_board_info(struct pci_dev *pci_dev_p,
|
|
struct me4000_info *board_info)
|
|
{
|
|
int i;
|
|
int result;
|
|
struct list_head *board_p;
|
|
board_info->pci_dev_p = pci_dev_p;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(me4000_boards); i++) {
|
|
if (me4000_boards[i].device_id == pci_dev_p->device) {
|
|
board_info->board_p = &me4000_boards[i];
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_SIZE(me4000_boards)) {
|
|
printk(KERN_ERR
|
|
"ME4000:init_board_info():Device ID not valid\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Get the index of the board in the global list */
|
|
i = 0;
|
|
list_for_each(board_p, &me4000_board_info_list) {
|
|
if (board_p == &board_info->list) {
|
|
board_info->board_count = i;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
if (board_p == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:init_board_info():Cannot get index of board\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Init list head for analog output contexts */
|
|
INIT_LIST_HEAD(&board_info->ao_context_list);
|
|
|
|
/* Init spin locks */
|
|
spin_lock_init(&board_info->preload_lock);
|
|
spin_lock_init(&board_info->ai_ctrl_lock);
|
|
|
|
/* Get the serial number */
|
|
result = pci_read_config_dword(pci_dev_p, 0x2C, &board_info->serial_no);
|
|
if (result != PCIBIOS_SUCCESSFUL) {
|
|
printk(KERN_WARNING
|
|
"ME4000:init_board_info: Can't get serial_no\n");
|
|
return result;
|
|
}
|
|
PDEBUG("init_board_info():serial_no = 0x%x\n", board_info->serial_no);
|
|
|
|
/* Get the hardware revision */
|
|
result =
|
|
pci_read_config_byte(pci_dev_p, 0x08, &board_info->hw_revision);
|
|
if (result != PCIBIOS_SUCCESSFUL) {
|
|
printk(KERN_WARNING
|
|
"ME4000:init_board_info():Can't get hw_revision\n");
|
|
return result;
|
|
}
|
|
PDEBUG("init_board_info():hw_revision = 0x%x\n",
|
|
board_info->hw_revision);
|
|
|
|
/* Get the vendor id */
|
|
board_info->vendor_id = pci_dev_p->vendor;
|
|
PDEBUG("init_board_info():vendor_id = 0x%x\n", board_info->vendor_id);
|
|
|
|
/* Get the device id */
|
|
board_info->device_id = pci_dev_p->device;
|
|
PDEBUG("init_board_info():device_id = 0x%x\n", board_info->device_id);
|
|
|
|
/* Get the pci device number */
|
|
board_info->pci_dev_no = PCI_FUNC(pci_dev_p->devfn);
|
|
PDEBUG("init_board_info():pci_func_no = 0x%x\n",
|
|
board_info->pci_func_no);
|
|
|
|
/* Get the pci slot number */
|
|
board_info->pci_dev_no = PCI_SLOT(pci_dev_p->devfn);
|
|
PDEBUG("init_board_info():pci_dev_no = 0x%x\n", board_info->pci_dev_no);
|
|
|
|
/* Get the pci bus number */
|
|
board_info->pci_bus_no = pci_dev_p->bus->number;
|
|
PDEBUG("init_board_info():pci_bus_no = 0x%x\n", board_info->pci_bus_no);
|
|
|
|
/* Get the irq assigned to the board */
|
|
board_info->irq = pci_dev_p->irq;
|
|
PDEBUG("init_board_info():irq = %d\n", board_info->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int alloc_ao_contexts(struct me4000_info *info)
|
|
{
|
|
int i;
|
|
int err;
|
|
struct me4000_ao_context *ao_context;
|
|
|
|
for (i = 0; i < info->board_p->ao.count; i++) {
|
|
ao_context = kzalloc(sizeof(struct me4000_ao_context),
|
|
GFP_KERNEL);
|
|
if (!ao_context) {
|
|
printk(KERN_ERR
|
|
"alloc_ao_contexts():Can't get memory for ao context\n");
|
|
release_ao_contexts(info);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
spin_lock_init(&ao_context->use_lock);
|
|
spin_lock_init(&ao_context->int_lock);
|
|
ao_context->irq = info->irq;
|
|
init_waitqueue_head(&ao_context->wait_queue);
|
|
ao_context->board_info = info;
|
|
|
|
if (info->board_p->ao.fifo_count) {
|
|
/* Allocate circular buffer */
|
|
ao_context->circ_buf.buf =
|
|
kzalloc(ME4000_AO_BUFFER_SIZE, GFP_KERNEL);
|
|
if (!ao_context->circ_buf.buf) {
|
|
printk(KERN_ERR
|
|
"alloc_ao_contexts():Can't get circular buffer\n");
|
|
release_ao_contexts(info);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Clear the circular buffer */
|
|
ao_context->circ_buf.head = 0;
|
|
ao_context->circ_buf.tail = 0;
|
|
}
|
|
|
|
switch (i) {
|
|
case 0:
|
|
ao_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AO_00_CTRL_REG;
|
|
ao_context->status_reg =
|
|
info->me4000_regbase + ME4000_AO_00_STATUS_REG;
|
|
ao_context->fifo_reg =
|
|
info->me4000_regbase + ME4000_AO_00_FIFO_REG;
|
|
ao_context->single_reg =
|
|
info->me4000_regbase + ME4000_AO_00_SINGLE_REG;
|
|
ao_context->timer_reg =
|
|
info->me4000_regbase + ME4000_AO_00_TIMER_REG;
|
|
ao_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
ao_context->preload_reg =
|
|
info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
|
|
break;
|
|
case 1:
|
|
ao_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AO_01_CTRL_REG;
|
|
ao_context->status_reg =
|
|
info->me4000_regbase + ME4000_AO_01_STATUS_REG;
|
|
ao_context->fifo_reg =
|
|
info->me4000_regbase + ME4000_AO_01_FIFO_REG;
|
|
ao_context->single_reg =
|
|
info->me4000_regbase + ME4000_AO_01_SINGLE_REG;
|
|
ao_context->timer_reg =
|
|
info->me4000_regbase + ME4000_AO_01_TIMER_REG;
|
|
ao_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
ao_context->preload_reg =
|
|
info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
|
|
break;
|
|
case 2:
|
|
ao_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AO_02_CTRL_REG;
|
|
ao_context->status_reg =
|
|
info->me4000_regbase + ME4000_AO_02_STATUS_REG;
|
|
ao_context->fifo_reg =
|
|
info->me4000_regbase + ME4000_AO_02_FIFO_REG;
|
|
ao_context->single_reg =
|
|
info->me4000_regbase + ME4000_AO_02_SINGLE_REG;
|
|
ao_context->timer_reg =
|
|
info->me4000_regbase + ME4000_AO_02_TIMER_REG;
|
|
ao_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
ao_context->preload_reg =
|
|
info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
|
|
break;
|
|
case 3:
|
|
ao_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AO_03_CTRL_REG;
|
|
ao_context->status_reg =
|
|
info->me4000_regbase + ME4000_AO_03_STATUS_REG;
|
|
ao_context->fifo_reg =
|
|
info->me4000_regbase + ME4000_AO_03_FIFO_REG;
|
|
ao_context->single_reg =
|
|
info->me4000_regbase + ME4000_AO_03_SINGLE_REG;
|
|
ao_context->timer_reg =
|
|
info->me4000_regbase + ME4000_AO_03_TIMER_REG;
|
|
ao_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
ao_context->preload_reg =
|
|
info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (info->board_p->ao.fifo_count) {
|
|
/* Request the interrupt line */
|
|
err =
|
|
request_irq(ao_context->irq, me4000_ao_isr,
|
|
IRQF_DISABLED | IRQF_SHARED,
|
|
ME4000_NAME, ao_context);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"%s:Can't get interrupt line", __func__);
|
|
kfree(ao_context->circ_buf.buf);
|
|
kfree(ao_context);
|
|
release_ao_contexts(info);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
list_add_tail(&ao_context->list, &info->ao_context_list);
|
|
ao_context->index = i;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void release_ao_contexts(struct me4000_info *board_info)
|
|
{
|
|
struct me4000_ao_context *ao_context, *ao_context_safe;
|
|
|
|
/* Clear analog output context list */
|
|
list_for_each_entry_safe(ao_context, ao_context_safe,
|
|
&board_info->ao_context_list, list) {
|
|
free_irq(ao_context->irq, ao_context);
|
|
kfree(ao_context->circ_buf.buf);
|
|
list_del(&ao_context->list);
|
|
kfree(ao_context);
|
|
}
|
|
}
|
|
|
|
static int alloc_ai_context(struct me4000_info *info)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
|
|
if (info->board_p->ai.count) {
|
|
ai_context = kzalloc(sizeof(struct me4000_ai_context),
|
|
GFP_KERNEL);
|
|
if (!ai_context) {
|
|
printk(KERN_ERR
|
|
"ME4000:alloc_ai_context():Can't get memory for ai context\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->ai_context = ai_context;
|
|
|
|
spin_lock_init(&ai_context->use_lock);
|
|
spin_lock_init(&ai_context->int_lock);
|
|
ai_context->number = 0;
|
|
ai_context->irq = info->irq;
|
|
init_waitqueue_head(&ai_context->wait_queue);
|
|
ai_context->board_info = info;
|
|
|
|
ai_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AI_CTRL_REG;
|
|
ai_context->status_reg =
|
|
info->me4000_regbase + ME4000_AI_STATUS_REG;
|
|
ai_context->channel_list_reg =
|
|
info->me4000_regbase + ME4000_AI_CHANNEL_LIST_REG;
|
|
ai_context->data_reg =
|
|
info->me4000_regbase + ME4000_AI_DATA_REG;
|
|
ai_context->chan_timer_reg =
|
|
info->me4000_regbase + ME4000_AI_CHAN_TIMER_REG;
|
|
ai_context->chan_pre_timer_reg =
|
|
info->me4000_regbase + ME4000_AI_CHAN_PRE_TIMER_REG;
|
|
ai_context->scan_timer_low_reg =
|
|
info->me4000_regbase + ME4000_AI_SCAN_TIMER_LOW_REG;
|
|
ai_context->scan_timer_high_reg =
|
|
info->me4000_regbase + ME4000_AI_SCAN_TIMER_HIGH_REG;
|
|
ai_context->scan_pre_timer_low_reg =
|
|
info->me4000_regbase + ME4000_AI_SCAN_PRE_TIMER_LOW_REG;
|
|
ai_context->scan_pre_timer_high_reg =
|
|
info->me4000_regbase + ME4000_AI_SCAN_PRE_TIMER_HIGH_REG;
|
|
ai_context->start_reg =
|
|
info->me4000_regbase + ME4000_AI_START_REG;
|
|
ai_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
ai_context->sample_counter_reg =
|
|
info->me4000_regbase + ME4000_AI_SAMPLE_COUNTER_REG;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int alloc_dio_context(struct me4000_info *info)
|
|
{
|
|
struct me4000_dio_context *dio_context;
|
|
|
|
if (info->board_p->dio.count) {
|
|
dio_context = kzalloc(sizeof(struct me4000_dio_context),
|
|
GFP_KERNEL);
|
|
if (!dio_context) {
|
|
printk(KERN_ERR
|
|
"ME4000:alloc_dio_context():Can't get memory for dio context\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->dio_context = dio_context;
|
|
|
|
spin_lock_init(&dio_context->use_lock);
|
|
dio_context->board_info = info;
|
|
|
|
dio_context->dio_count = info->board_p->dio.count;
|
|
|
|
dio_context->dir_reg =
|
|
info->me4000_regbase + ME4000_DIO_DIR_REG;
|
|
dio_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_DIO_CTRL_REG;
|
|
dio_context->port_0_reg =
|
|
info->me4000_regbase + ME4000_DIO_PORT_0_REG;
|
|
dio_context->port_1_reg =
|
|
info->me4000_regbase + ME4000_DIO_PORT_1_REG;
|
|
dio_context->port_2_reg =
|
|
info->me4000_regbase + ME4000_DIO_PORT_2_REG;
|
|
dio_context->port_3_reg =
|
|
info->me4000_regbase + ME4000_DIO_PORT_3_REG;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int alloc_cnt_context(struct me4000_info *info)
|
|
{
|
|
struct me4000_cnt_context *cnt_context;
|
|
|
|
if (info->board_p->cnt.count) {
|
|
cnt_context = kzalloc(sizeof(struct me4000_cnt_context),
|
|
GFP_KERNEL);
|
|
if (!cnt_context) {
|
|
printk(KERN_ERR
|
|
"ME4000:alloc_cnt_context():Can't get memory for cnt context\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->cnt_context = cnt_context;
|
|
|
|
spin_lock_init(&cnt_context->use_lock);
|
|
cnt_context->board_info = info;
|
|
|
|
cnt_context->ctrl_reg =
|
|
info->timer_regbase + ME4000_CNT_CTRL_REG;
|
|
cnt_context->counter_0_reg =
|
|
info->timer_regbase + ME4000_CNT_COUNTER_0_REG;
|
|
cnt_context->counter_1_reg =
|
|
info->timer_regbase + ME4000_CNT_COUNTER_1_REG;
|
|
cnt_context->counter_2_reg =
|
|
info->timer_regbase + ME4000_CNT_COUNTER_2_REG;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int alloc_ext_int_context(struct me4000_info *info)
|
|
{
|
|
struct me4000_ext_int_context *ext_int_context;
|
|
|
|
if (info->board_p->cnt.count) {
|
|
ext_int_context =
|
|
kzalloc(sizeof(struct me4000_ext_int_context), GFP_KERNEL);
|
|
if (!ext_int_context) {
|
|
printk(KERN_ERR
|
|
"ME4000:alloc_ext_int_context():Can't get memory for cnt context\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->ext_int_context = ext_int_context;
|
|
|
|
spin_lock_init(&ext_int_context->use_lock);
|
|
ext_int_context->board_info = info;
|
|
|
|
ext_int_context->fasync_ptr = NULL;
|
|
ext_int_context->irq = info->irq;
|
|
|
|
ext_int_context->ctrl_reg =
|
|
info->me4000_regbase + ME4000_AI_CTRL_REG;
|
|
ext_int_context->irq_status_reg =
|
|
info->me4000_regbase + ME4000_IRQ_STATUS_REG;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_probe(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
int result = 0;
|
|
struct me4000_info *board_info;
|
|
|
|
CALL_PDEBUG("me4000_probe() is executed\n");
|
|
|
|
/* Allocate structure for board context */
|
|
board_info = kzalloc(sizeof(struct me4000_info), GFP_KERNEL);
|
|
if (!board_info) {
|
|
printk(KERN_ERR
|
|
"ME4000:Can't get memory for board info structure\n");
|
|
result = -ENOMEM;
|
|
goto PROBE_ERROR_1;
|
|
}
|
|
|
|
/* Add to global linked list */
|
|
list_add_tail(&board_info->list, &me4000_board_info_list);
|
|
|
|
/* Get the PCI base registers */
|
|
result = get_registers(dev, board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot get registers\n", __func__);
|
|
goto PROBE_ERROR_2;
|
|
}
|
|
|
|
/* Enable the device */
|
|
result = pci_enable_device(dev);
|
|
if (result < 0) {
|
|
printk(KERN_ERR "%s:Cannot enable PCI device\n", __func__);
|
|
goto PROBE_ERROR_2;
|
|
}
|
|
|
|
/* Request the PCI register regions */
|
|
result = pci_request_regions(dev, ME4000_NAME);
|
|
if (result < 0) {
|
|
printk(KERN_ERR "%s:Cannot request I/O regions\n", __func__);
|
|
goto PROBE_ERROR_2;
|
|
}
|
|
|
|
/* Initialize board info */
|
|
result = init_board_info(dev, board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot init baord info\n", __func__);
|
|
goto PROBE_ERROR_3;
|
|
}
|
|
|
|
/* Download the xilinx firmware */
|
|
result = me4000_xilinx_download(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Can't download firmware\n", __func__);
|
|
goto PROBE_ERROR_3;
|
|
}
|
|
|
|
/* Make a hardware reset */
|
|
result = me4000_reset_board(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s :Can't reset board\n", __func__);
|
|
goto PROBE_ERROR_3;
|
|
}
|
|
|
|
/* Allocate analog output context structures */
|
|
result = alloc_ao_contexts(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot allocate ao contexts\n", __func__);
|
|
goto PROBE_ERROR_3;
|
|
}
|
|
|
|
/* Allocate analog input context */
|
|
result = alloc_ai_context(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot allocate ai context\n", __func__);
|
|
goto PROBE_ERROR_4;
|
|
}
|
|
|
|
/* Allocate digital I/O context */
|
|
result = alloc_dio_context(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot allocate dio context\n", __func__);
|
|
goto PROBE_ERROR_5;
|
|
}
|
|
|
|
/* Allocate counter context */
|
|
result = alloc_cnt_context(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR "%s:Cannot allocate cnt context\n", __func__);
|
|
goto PROBE_ERROR_6;
|
|
}
|
|
|
|
/* Allocate external interrupt context */
|
|
result = alloc_ext_int_context(board_info);
|
|
if (result) {
|
|
printk(KERN_ERR
|
|
"%s:Cannot allocate ext_int context\n", __func__);
|
|
goto PROBE_ERROR_7;
|
|
}
|
|
|
|
return 0;
|
|
|
|
PROBE_ERROR_7:
|
|
kfree(board_info->cnt_context);
|
|
|
|
PROBE_ERROR_6:
|
|
kfree(board_info->dio_context);
|
|
|
|
PROBE_ERROR_5:
|
|
kfree(board_info->ai_context);
|
|
|
|
PROBE_ERROR_4:
|
|
release_ao_contexts(board_info);
|
|
|
|
PROBE_ERROR_3:
|
|
pci_release_regions(dev);
|
|
|
|
PROBE_ERROR_2:
|
|
list_del(&board_info->list);
|
|
kfree(board_info);
|
|
|
|
PROBE_ERROR_1:
|
|
return result;
|
|
}
|
|
|
|
static int me4000_xilinx_download(struct me4000_info *info)
|
|
{
|
|
int size = 0;
|
|
u32 value = 0;
|
|
int idx = 0;
|
|
unsigned char *firm;
|
|
wait_queue_head_t queue;
|
|
|
|
CALL_PDEBUG("me4000_xilinx_download() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
firm = (info->device_id == 0x4610) ? xilinx_firm_4610 : xilinx_firm;
|
|
|
|
/*
|
|
* Set PLX local interrupt 2 polarity to high.
|
|
* Interrupt is thrown by init pin of xilinx.
|
|
*/
|
|
outl(0x10, info->plx_regbase + PLX_INTCSR);
|
|
|
|
/* Set /CS and /WRITE of the Xilinx */
|
|
value = inl(info->plx_regbase + PLX_ICR);
|
|
value |= 0x100;
|
|
outl(value, info->plx_regbase + PLX_ICR);
|
|
|
|
/* Init Xilinx with CS1 */
|
|
inb(info->program_regbase + 0xC8);
|
|
|
|
/* Wait until /INIT pin is set */
|
|
udelay(20);
|
|
if (!(inl(info->plx_regbase + PLX_INTCSR) & 0x20)) {
|
|
printk(KERN_ERR "%s:Can't init Xilinx\n", __func__);
|
|
return -EIO;
|
|
}
|
|
|
|
/* Reset /CS and /WRITE of the Xilinx */
|
|
value = inl(info->plx_regbase + PLX_ICR);
|
|
value &= ~0x100;
|
|
outl(value, info->plx_regbase + PLX_ICR);
|
|
|
|
/* Download Xilinx firmware */
|
|
size = (firm[0] << 24) + (firm[1] << 16) + (firm[2] << 8) + firm[3];
|
|
udelay(10);
|
|
|
|
for (idx = 0; idx < size; idx++) {
|
|
outb(firm[16 + idx], info->program_regbase);
|
|
|
|
udelay(10);
|
|
|
|
/* Check if BUSY flag is low */
|
|
if (inl(info->plx_regbase + PLX_ICR) & 0x20) {
|
|
printk(KERN_ERR
|
|
"%s:Xilinx is still busy (idx = %d)\n", __func__,
|
|
idx);
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
PDEBUG("me4000_xilinx_download():%d bytes written\n", idx);
|
|
|
|
/* If done flag is high download was successful */
|
|
if (inl(info->plx_regbase + PLX_ICR) & 0x4) {
|
|
PDEBUG("me4000_xilinx_download():Done flag is set\n");
|
|
PDEBUG("me4000_xilinx_download():Download was successful\n");
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:%s:DONE flag is not set\n", __func__);
|
|
printk(KERN_ERR
|
|
"ME4000:%s:Download not succesful\n", __func__);
|
|
return -EIO;
|
|
}
|
|
|
|
/* Set /CS and /WRITE */
|
|
value = inl(info->plx_regbase + PLX_ICR);
|
|
value |= 0x100;
|
|
outl(value, info->plx_regbase + PLX_ICR);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_reset_board(struct me4000_info *info)
|
|
{
|
|
unsigned long icr;
|
|
|
|
CALL_PDEBUG("me4000_reset_board() is executed\n");
|
|
|
|
/* Make a hardware reset */
|
|
icr = me4000_inl(info->plx_regbase + PLX_ICR);
|
|
icr |= 0x40000000;
|
|
me4000_outl(icr, info->plx_regbase + PLX_ICR);
|
|
icr &= ~0x40000000;
|
|
me4000_outl(icr, info->plx_regbase + PLX_ICR);
|
|
|
|
/* Set both stop bits in the analog input control register */
|
|
me4000_outl(ME4000_AI_CTRL_BIT_IMMEDIATE_STOP | ME4000_AI_CTRL_BIT_STOP,
|
|
info->me4000_regbase + ME4000_AI_CTRL_REG);
|
|
|
|
/* Set both stop bits in the analog output control register */
|
|
me4000_outl(ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
|
|
info->me4000_regbase + ME4000_AO_00_CTRL_REG);
|
|
me4000_outl(ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
|
|
info->me4000_regbase + ME4000_AO_01_CTRL_REG);
|
|
me4000_outl(ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
|
|
info->me4000_regbase + ME4000_AO_02_CTRL_REG);
|
|
me4000_outl(ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
|
|
info->me4000_regbase + ME4000_AO_03_CTRL_REG);
|
|
|
|
/* 0x8000 to the DACs means an output voltage of 0V */
|
|
me4000_outl(0x8000, info->me4000_regbase + ME4000_AO_00_SINGLE_REG);
|
|
me4000_outl(0x8000, info->me4000_regbase + ME4000_AO_01_SINGLE_REG);
|
|
me4000_outl(0x8000, info->me4000_regbase + ME4000_AO_02_SINGLE_REG);
|
|
me4000_outl(0x8000, info->me4000_regbase + ME4000_AO_03_SINGLE_REG);
|
|
|
|
/* Enable interrupts on the PLX */
|
|
me4000_outl(0x43, info->plx_regbase + PLX_INTCSR);
|
|
|
|
/* Set the adustment register for AO demux */
|
|
me4000_outl(ME4000_AO_DEMUX_ADJUST_VALUE,
|
|
info->me4000_regbase + ME4000_AO_DEMUX_ADJUST_REG);
|
|
|
|
/* Set digital I/O direction for port 0 to output on isolated versions */
|
|
if (!(me4000_inl(info->me4000_regbase + ME4000_DIO_DIR_REG) & 0x1))
|
|
me4000_outl(0x1, info->me4000_regbase + ME4000_DIO_CTRL_REG);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_open(struct inode *inode_p, struct file *file_p)
|
|
{
|
|
int board, dev, mode;
|
|
int err = 0;
|
|
int i;
|
|
struct list_head *ptr;
|
|
struct me4000_info *board_info = NULL;
|
|
struct me4000_ao_context *ao_context = NULL;
|
|
struct me4000_ai_context *ai_context = NULL;
|
|
struct me4000_dio_context *dio_context = NULL;
|
|
struct me4000_cnt_context *cnt_context = NULL;
|
|
struct me4000_ext_int_context *ext_int_context = NULL;
|
|
|
|
CALL_PDEBUG("me4000_open() is executed\n");
|
|
|
|
/* Analog output */
|
|
if (MAJOR(inode_p->i_rdev) == me4000_ao_major_driver_no) {
|
|
board = AO_BOARD(inode_p->i_rdev);
|
|
dev = AO_PORT(inode_p->i_rdev);
|
|
mode = AO_MODE(inode_p->i_rdev);
|
|
|
|
PDEBUG("me4000_open():board = %d ao = %d mode = %d\n", board,
|
|
dev, mode);
|
|
|
|
/* Search for the board context */
|
|
i = 0;
|
|
list_for_each(ptr, &me4000_board_info_list) {
|
|
if (i == board)
|
|
break;
|
|
i++;
|
|
}
|
|
board_info = list_entry(ptr, struct me4000_info, list);
|
|
|
|
if (ptr == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Board %d not in device list\n",
|
|
board);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Search for the dac context */
|
|
i = 0;
|
|
list_for_each(ptr, &board_info->ao_context_list) {
|
|
if (i == dev)
|
|
break;
|
|
i++;
|
|
}
|
|
ao_context = list_entry(ptr, struct me4000_ao_context, list);
|
|
|
|
if (ptr == &board_info->ao_context_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Device %d not in device list\n",
|
|
dev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Check if mode is valid */
|
|
if (mode > 2) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Mode is not valid\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Check if mode is valid for this AO */
|
|
if ((mode != ME4000_AO_CONV_MODE_SINGLE)
|
|
&& (dev >= board_info->board_p->ao.fifo_count)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():AO %d only in single mode available\n",
|
|
dev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Check if already opened */
|
|
spin_lock(&ao_context->use_lock);
|
|
if (ao_context->dac_in_use) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():AO %d already in use\n",
|
|
dev);
|
|
spin_unlock(&ao_context->use_lock);
|
|
return -EBUSY;
|
|
}
|
|
ao_context->dac_in_use = 1;
|
|
spin_unlock(&ao_context->use_lock);
|
|
|
|
ao_context->mode = mode;
|
|
|
|
/* Hold the context in private data */
|
|
file_p->private_data = ao_context;
|
|
|
|
/* Set file operations pointer */
|
|
file_p->f_op = me4000_ao_fops_array[mode];
|
|
|
|
err = me4000_ao_prepare(ao_context);
|
|
if (err) {
|
|
ao_context->dac_in_use = 0;
|
|
return 1;
|
|
}
|
|
}
|
|
/* Analog input */
|
|
else if (MAJOR(inode_p->i_rdev) == me4000_ai_major_driver_no) {
|
|
board = AI_BOARD(inode_p->i_rdev);
|
|
mode = AI_MODE(inode_p->i_rdev);
|
|
|
|
PDEBUG("me4000_open():ai board = %d mode = %d\n", board, mode);
|
|
|
|
/* Search for the board context */
|
|
i = 0;
|
|
list_for_each(ptr, &me4000_board_info_list) {
|
|
if (i == board)
|
|
break;
|
|
i++;
|
|
}
|
|
board_info = list_entry(ptr, struct me4000_info, list);
|
|
|
|
if (ptr == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Board %d not in device list\n",
|
|
board);
|
|
return -ENODEV;
|
|
}
|
|
|
|
ai_context = board_info->ai_context;
|
|
|
|
/* Check if mode is valid */
|
|
if (mode > 5) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Mode is not valid\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check if already opened */
|
|
spin_lock(&ai_context->use_lock);
|
|
if (ai_context->in_use) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():AI already in use\n");
|
|
spin_unlock(&ai_context->use_lock);
|
|
return -EBUSY;
|
|
}
|
|
ai_context->in_use = 1;
|
|
spin_unlock(&ai_context->use_lock);
|
|
|
|
ai_context->mode = mode;
|
|
|
|
/* Hold the context in private data */
|
|
file_p->private_data = ai_context;
|
|
|
|
/* Set file operations pointer */
|
|
file_p->f_op = me4000_ai_fops_array[mode];
|
|
|
|
/* Prepare analog input */
|
|
me4000_ai_prepare(ai_context);
|
|
}
|
|
/* Digital I/O */
|
|
else if (MAJOR(inode_p->i_rdev) == me4000_dio_major_driver_no) {
|
|
board = DIO_BOARD(inode_p->i_rdev);
|
|
dev = 0;
|
|
mode = 0;
|
|
|
|
PDEBUG("me4000_open():board = %d\n", board);
|
|
|
|
/* Search for the board context */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
if (board_info->board_count == board)
|
|
break;
|
|
}
|
|
|
|
if (&board_info->list == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Board %d not in device list\n",
|
|
board);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Search for the dio context */
|
|
dio_context = board_info->dio_context;
|
|
|
|
/* Check if already opened */
|
|
spin_lock(&dio_context->use_lock);
|
|
if (dio_context->in_use) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():DIO already in use\n");
|
|
spin_unlock(&dio_context->use_lock);
|
|
return -EBUSY;
|
|
}
|
|
dio_context->in_use = 1;
|
|
spin_unlock(&dio_context->use_lock);
|
|
|
|
/* Hold the context in private data */
|
|
file_p->private_data = dio_context;
|
|
|
|
/* Set file operations pointer to single functions */
|
|
file_p->f_op = &me4000_dio_fops;
|
|
|
|
/* me4000_dio_reset(dio_context); */
|
|
}
|
|
/* Counters */
|
|
else if (MAJOR(inode_p->i_rdev) == me4000_cnt_major_driver_no) {
|
|
board = CNT_BOARD(inode_p->i_rdev);
|
|
dev = 0;
|
|
mode = 0;
|
|
|
|
PDEBUG("me4000_open():board = %d\n", board);
|
|
|
|
/* Search for the board context */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
if (board_info->board_count == board)
|
|
break;
|
|
}
|
|
|
|
if (&board_info->list == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Board %d not in device list\n",
|
|
board);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Get the cnt context */
|
|
cnt_context = board_info->cnt_context;
|
|
|
|
/* Check if already opened */
|
|
spin_lock(&cnt_context->use_lock);
|
|
if (cnt_context->in_use) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():CNT already in use\n");
|
|
spin_unlock(&cnt_context->use_lock);
|
|
return -EBUSY;
|
|
}
|
|
cnt_context->in_use = 1;
|
|
spin_unlock(&cnt_context->use_lock);
|
|
|
|
/* Hold the context in private data */
|
|
file_p->private_data = cnt_context;
|
|
|
|
/* Set file operations pointer to single functions */
|
|
file_p->f_op = &me4000_cnt_fops;
|
|
}
|
|
/* External Interrupt */
|
|
else if (MAJOR(inode_p->i_rdev) == me4000_ext_int_major_driver_no) {
|
|
board = EXT_INT_BOARD(inode_p->i_rdev);
|
|
dev = 0;
|
|
mode = 0;
|
|
|
|
PDEBUG("me4000_open():board = %d\n", board);
|
|
|
|
/* Search for the board context */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
if (board_info->board_count == board)
|
|
break;
|
|
}
|
|
|
|
if (&board_info->list == &me4000_board_info_list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Board %d not in device list\n",
|
|
board);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Get the external interrupt context */
|
|
ext_int_context = board_info->ext_int_context;
|
|
|
|
/* Check if already opened */
|
|
spin_lock(&cnt_context->use_lock);
|
|
if (ext_int_context->in_use) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():External interrupt already in use\n");
|
|
spin_unlock(&ext_int_context->use_lock);
|
|
return -EBUSY;
|
|
}
|
|
ext_int_context->in_use = 1;
|
|
spin_unlock(&ext_int_context->use_lock);
|
|
|
|
/* Hold the context in private data */
|
|
file_p->private_data = ext_int_context;
|
|
|
|
/* Set file operations pointer to single functions */
|
|
file_p->f_op = &me4000_ext_int_fops;
|
|
|
|
/* Request the interrupt line */
|
|
err =
|
|
request_irq(ext_int_context->irq, me4000_ext_int_isr,
|
|
IRQF_DISABLED | IRQF_SHARED, ME4000_NAME,
|
|
ext_int_context);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_open():Can't get interrupt line");
|
|
ext_int_context->in_use = 0;
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Reset the counter */
|
|
me4000_ext_int_disable(ext_int_context);
|
|
} else {
|
|
printk(KERN_ERR "ME4000:me4000_open():Major number unknown\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_release(struct inode *inode_p, struct file *file_p)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
struct me4000_ai_context *ai_context;
|
|
struct me4000_dio_context *dio_context;
|
|
struct me4000_cnt_context *cnt_context;
|
|
struct me4000_ext_int_context *ext_int_context;
|
|
|
|
CALL_PDEBUG("me4000_release() is executed\n");
|
|
|
|
if (MAJOR(inode_p->i_rdev) == me4000_ao_major_driver_no) {
|
|
ao_context = file_p->private_data;
|
|
|
|
/* Mark DAC as unused */
|
|
ao_context->dac_in_use = 0;
|
|
} else if (MAJOR(inode_p->i_rdev) == me4000_ai_major_driver_no) {
|
|
ai_context = file_p->private_data;
|
|
|
|
/* Reset the analog input */
|
|
me4000_ai_reset(ai_context);
|
|
|
|
/* Free the interrupt and the circular buffer */
|
|
if (ai_context->mode) {
|
|
free_irq(ai_context->irq, ai_context);
|
|
kfree(ai_context->circ_buf.buf);
|
|
ai_context->circ_buf.buf = NULL;
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
}
|
|
|
|
/* Mark AI as unused */
|
|
ai_context->in_use = 0;
|
|
} else if (MAJOR(inode_p->i_rdev) == me4000_dio_major_driver_no) {
|
|
dio_context = file_p->private_data;
|
|
|
|
/* Mark digital I/O as unused */
|
|
dio_context->in_use = 0;
|
|
} else if (MAJOR(inode_p->i_rdev) == me4000_cnt_major_driver_no) {
|
|
cnt_context = file_p->private_data;
|
|
|
|
/* Mark counters as unused */
|
|
cnt_context->in_use = 0;
|
|
} else if (MAJOR(inode_p->i_rdev) == me4000_ext_int_major_driver_no) {
|
|
ext_int_context = file_p->private_data;
|
|
|
|
/* Disable the externel interrupt */
|
|
me4000_ext_int_disable(ext_int_context);
|
|
|
|
free_irq(ext_int_context->irq, ext_int_context);
|
|
|
|
/* Mark as unused */
|
|
ext_int_context->in_use = 0;
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_release():Major number unknown\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------- Analog output stuff --------------------------------------*/
|
|
|
|
static int me4000_ao_prepare(struct me4000_ao_context *ao_context)
|
|
{
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_prepare() is executed\n");
|
|
|
|
if (ao_context->mode == ME4000_AO_CONV_MODE_CONTINUOUS) {
|
|
/* Only do anything if not already in the correct mode */
|
|
unsigned long mode = me4000_inl(ao_context->ctrl_reg);
|
|
if ((mode & ME4000_AO_CONV_MODE_CONTINUOUS)
|
|
&& (mode & ME4000_AO_CTRL_BIT_ENABLE_FIFO)) {
|
|
return 0;
|
|
}
|
|
|
|
/* Stop any conversion */
|
|
me4000_ao_immediate_stop(ao_context);
|
|
|
|
/* Set the control register to default state */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
me4000_outl(ME4000_AO_CONV_MODE_CONTINUOUS |
|
|
ME4000_AO_CTRL_BIT_ENABLE_FIFO |
|
|
ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP,
|
|
ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
/* Set to fastest sample rate */
|
|
me4000_outl(65, ao_context->timer_reg);
|
|
} else if (ao_context->mode == ME4000_AO_CONV_MODE_WRAPAROUND) {
|
|
/* Only do anything if not already in the correct mode */
|
|
unsigned long mode = me4000_inl(ao_context->ctrl_reg);
|
|
if ((mode & ME4000_AO_CONV_MODE_WRAPAROUND)
|
|
&& (mode & ME4000_AO_CTRL_BIT_ENABLE_FIFO)) {
|
|
return 0;
|
|
}
|
|
|
|
/* Stop any conversion */
|
|
me4000_ao_immediate_stop(ao_context);
|
|
|
|
/* Set the control register to default state */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
me4000_outl(ME4000_AO_CONV_MODE_WRAPAROUND |
|
|
ME4000_AO_CTRL_BIT_ENABLE_FIFO |
|
|
ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP,
|
|
ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
/* Set to fastest sample rate */
|
|
me4000_outl(65, ao_context->timer_reg);
|
|
} else if (ao_context->mode == ME4000_AO_CONV_MODE_SINGLE) {
|
|
/* Only do anything if not already in the correct mode */
|
|
unsigned long mode = me4000_inl(ao_context->ctrl_reg);
|
|
if (!
|
|
(mode &
|
|
(ME4000_AO_CONV_MODE_WRAPAROUND |
|
|
ME4000_AO_CONV_MODE_CONTINUOUS))) {
|
|
return 0;
|
|
}
|
|
|
|
/* Stop any conversion */
|
|
me4000_ao_immediate_stop(ao_context);
|
|
|
|
/* Clear the control register */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
me4000_outl(0x0, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
/* Set voltage to 0V */
|
|
me4000_outl(0x8000, ao_context->single_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_prepare():Invalid mode specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_reset(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_reset() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
if (ao_context->mode == ME4000_AO_CONV_MODE_WRAPAROUND) {
|
|
/*
|
|
* First stop conversion of the DAC before reconfigure.
|
|
* This is essantial, cause of the state machine.
|
|
* If not stopped before configuring mode, it could
|
|
* walk in a undefined state.
|
|
*/
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_IMMEDIATE_STOP;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
|
|
wait_event_timeout(queue,
|
|
(inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM) == 0,
|
|
1);
|
|
|
|
/* Set to transparent mode */
|
|
me4000_ao_simultaneous_disable(ao_context);
|
|
|
|
/* Set to single mode in order to set default voltage */
|
|
me4000_outl(0x0, ao_context->ctrl_reg);
|
|
|
|
/* Set voltage to 0V */
|
|
me4000_outl(0x8000, ao_context->single_reg);
|
|
|
|
/* Set to fastest sample rate */
|
|
me4000_outl(65, ao_context->timer_reg);
|
|
|
|
/* Set the original mode and enable FIFO */
|
|
me4000_outl(ME4000_AO_CONV_MODE_WRAPAROUND |
|
|
ME4000_AO_CTRL_BIT_ENABLE_FIFO |
|
|
ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP,
|
|
ao_context->ctrl_reg);
|
|
} else if (ao_context->mode == ME4000_AO_CONV_MODE_CONTINUOUS) {
|
|
/*
|
|
* First stop conversion of the DAC before reconfigure.
|
|
* This is essantial, cause of the state machine.
|
|
* If not stopped before configuring mode, it could
|
|
* walk in a undefined state.
|
|
*/
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_STOP;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
wait_event_timeout(queue,
|
|
(inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM) == 0,
|
|
1);
|
|
|
|
/* Clear the circular buffer */
|
|
ao_context->circ_buf.head = 0;
|
|
ao_context->circ_buf.tail = 0;
|
|
|
|
/* Set to transparent mode */
|
|
me4000_ao_simultaneous_disable(ao_context);
|
|
|
|
/* Set to single mode in order to set default voltage */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
me4000_outl(0x0, ao_context->ctrl_reg);
|
|
|
|
/* Set voltage to 0V */
|
|
me4000_outl(0x8000, ao_context->single_reg);
|
|
|
|
/* Set to fastest sample rate */
|
|
me4000_outl(65, ao_context->timer_reg);
|
|
|
|
/* Set the original mode and enable FIFO */
|
|
me4000_outl(ME4000_AO_CONV_MODE_CONTINUOUS |
|
|
ME4000_AO_CTRL_BIT_ENABLE_FIFO |
|
|
ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP,
|
|
ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
} else {
|
|
/* Set to transparent mode */
|
|
me4000_ao_simultaneous_disable(ao_context);
|
|
|
|
/* Set voltage to 0V */
|
|
me4000_outl(0x8000, ao_context->single_reg);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t me4000_ao_write_sing(struct file *filep, const char *buff,
|
|
size_t cnt, loff_t *offp)
|
|
{
|
|
struct me4000_ao_context *ao_context = filep->private_data;
|
|
u32 value;
|
|
const u16 *buffer = (const u16 *)buff;
|
|
|
|
CALL_PDEBUG("me4000_ao_write_sing() is executed\n");
|
|
|
|
if (cnt != 2) {
|
|
printk(KERN_ERR
|
|
"%s:Write count is not 2\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (get_user(value, buffer)) {
|
|
printk(KERN_ERR
|
|
"%s:Cannot copy data from user\n", __func__);
|
|
return -EFAULT;
|
|
}
|
|
|
|
me4000_outl(value, ao_context->single_reg);
|
|
|
|
return 2;
|
|
}
|
|
|
|
static ssize_t me4000_ao_write_wrap(struct file *filep, const char *buff,
|
|
size_t cnt, loff_t *offp)
|
|
{
|
|
struct me4000_ao_context *ao_context = filep->private_data;
|
|
size_t i;
|
|
u32 value;
|
|
u32 tmp;
|
|
const u16 *buffer = (const u16 *)buff;
|
|
size_t count = cnt / 2;
|
|
|
|
CALL_PDEBUG("me4000_ao_write_wrap() is executed\n");
|
|
|
|
/* Check if a conversion is already running */
|
|
if (inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"%s:There is already a conversion running\n", __func__);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (count > ME4000_AO_FIFO_COUNT) {
|
|
printk(KERN_ERR
|
|
"%s:Can't load more than %d values\n", __func__,
|
|
ME4000_AO_FIFO_COUNT);
|
|
return -ENOSPC;
|
|
}
|
|
|
|
/* Reset the FIFO */
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp &= ~ME4000_AO_CTRL_BIT_ENABLE_FIFO;
|
|
outl(tmp, ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_FIFO;
|
|
outl(tmp, ao_context->ctrl_reg);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (get_user(value, buffer + i)) {
|
|
printk(KERN_ERR
|
|
"%s:Cannot copy data from user\n", __func__);
|
|
return -EFAULT;
|
|
}
|
|
if (((ao_context->fifo_reg & 0xFF) == ME4000_AO_01_FIFO_REG)
|
|
|| ((ao_context->fifo_reg & 0xFF) == ME4000_AO_03_FIFO_REG))
|
|
value = value << 16;
|
|
outl(value, ao_context->fifo_reg);
|
|
}
|
|
CALL_PDEBUG("me4000_ao_write_wrap() is leaved with %d\n", i * 2);
|
|
|
|
return i * 2;
|
|
}
|
|
|
|
static ssize_t me4000_ao_write_cont(struct file *filep, const char *buff,
|
|
size_t cnt, loff_t *offp)
|
|
{
|
|
struct me4000_ao_context *ao_context = filep->private_data;
|
|
const u16 *buffer = (const u16 *)buff;
|
|
size_t count = cnt / 2;
|
|
unsigned long flags;
|
|
u32 tmp;
|
|
int c = 0;
|
|
int k = 0;
|
|
int ret = 0;
|
|
u16 svalue;
|
|
u32 lvalue;
|
|
int i;
|
|
wait_queue_head_t queue;
|
|
|
|
CALL_PDEBUG("me4000_ao_write_cont() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Check count */
|
|
if (count <= 0) {
|
|
PDEBUG("me4000_ao_write_cont():Count is 0\n");
|
|
return 0;
|
|
}
|
|
|
|
if (filep->f_flags & O_APPEND) {
|
|
PDEBUG("me4000_ao_write_cont():Append data to data stream\n");
|
|
while (count > 0) {
|
|
if (filep->f_flags & O_NONBLOCK) {
|
|
if (ao_context->pipe_flag) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_write_cont():Broken pipe in nonblocking write\n");
|
|
return -EPIPE;
|
|
}
|
|
c = me4000_space_to_end(ao_context->circ_buf,
|
|
ME4000_AO_BUFFER_COUNT);
|
|
if (!c) {
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Returning from nonblocking write\n");
|
|
break;
|
|
}
|
|
} else {
|
|
wait_event_interruptible(ao_context->wait_queue,
|
|
(c =
|
|
me4000_space_to_end
|
|
(ao_context->circ_buf,
|
|
ME4000_AO_BUFFER_COUNT)));
|
|
if (ao_context->pipe_flag) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_write_cont():Broken pipe in blocking write\n");
|
|
return -EPIPE;
|
|
}
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_write_cont():Wait for free buffer interrupted from signal\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
PDEBUG("me4000_ao_write_cont():Space to end = %d\n", c);
|
|
|
|
/* Only able to write size of free buffer or size of count */
|
|
if (count < c)
|
|
c = count;
|
|
|
|
k = 2 * c;
|
|
k -= copy_from_user(ao_context->circ_buf.buf +
|
|
ao_context->circ_buf.head, buffer,
|
|
k);
|
|
c = k / 2;
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Copy %d values from user space\n",
|
|
c);
|
|
|
|
if (!c)
|
|
return -EFAULT;
|
|
|
|
ao_context->circ_buf.head =
|
|
(ao_context->circ_buf.head +
|
|
c) & (ME4000_AO_BUFFER_COUNT - 1);
|
|
buffer += c;
|
|
count -= c;
|
|
ret += c;
|
|
|
|
/* Values are now available so enable interrupts */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
if (me4000_buf_count
|
|
(ao_context->circ_buf, ME4000_AO_BUFFER_COUNT)) {
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_IRQ;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
}
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
}
|
|
|
|
/* Wait until the state machine is stopped if O_SYNC is set */
|
|
if (filep->f_flags & O_SYNC) {
|
|
while (inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (ao_context->pipe_flag) {
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Broken pipe detected after sync\n");
|
|
return -EPIPE;
|
|
}
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_write_cont():Wait on state machine after sync interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
PDEBUG("me4000_ao_write_cont():Preload DAC FIFO\n");
|
|
if ((me4000_inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_write_cont():Can't Preload DAC FIFO while conversion is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Clear the FIFO */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AO_CTRL_BIT_ENABLE_FIFO |
|
|
ME4000_AO_CTRL_BIT_ENABLE_IRQ);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_FIFO;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
/* Clear the circular buffer */
|
|
ao_context->circ_buf.head = 0;
|
|
ao_context->circ_buf.tail = 0;
|
|
|
|
/* Reset the broken pipe flag */
|
|
ao_context->pipe_flag = 0;
|
|
|
|
/* Only able to write size of fifo or count */
|
|
c = ME4000_AO_FIFO_COUNT;
|
|
if (count < c)
|
|
c = count;
|
|
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Write %d values to DAC on 0x%lX\n",
|
|
c, ao_context->fifo_reg);
|
|
|
|
/* Write values to the fifo */
|
|
for (i = 0; i < c; i++) {
|
|
if (get_user(svalue, buffer))
|
|
return -EFAULT;
|
|
|
|
if (((ao_context->fifo_reg & 0xFF) ==
|
|
ME4000_AO_01_FIFO_REG)
|
|
|| ((ao_context->fifo_reg & 0xFF) ==
|
|
ME4000_AO_03_FIFO_REG)) {
|
|
lvalue = ((u32) svalue) << 16;
|
|
} else
|
|
lvalue = (u32) svalue;
|
|
|
|
outl(lvalue, ao_context->fifo_reg);
|
|
buffer++;
|
|
}
|
|
count -= c;
|
|
ret += c;
|
|
|
|
while (1) {
|
|
/* Get free buffer */
|
|
c = me4000_space_to_end(ao_context->circ_buf,
|
|
ME4000_AO_BUFFER_COUNT);
|
|
|
|
if (c == 0)
|
|
return 2 * ret;
|
|
|
|
/* Only able to write size of free buffer or size of count */
|
|
if (count < c)
|
|
c = count;
|
|
|
|
/* If count = 0 return to user */
|
|
if (c <= 0) {
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Count reached 0\n");
|
|
break;
|
|
}
|
|
|
|
k = 2 * c;
|
|
k -= copy_from_user(ao_context->circ_buf.buf +
|
|
ao_context->circ_buf.head, buffer,
|
|
k);
|
|
c = k / 2;
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Wrote %d values to buffer\n",
|
|
c);
|
|
|
|
if (!c)
|
|
return -EFAULT;
|
|
|
|
ao_context->circ_buf.head =
|
|
(ao_context->circ_buf.head +
|
|
c) & (ME4000_AO_BUFFER_COUNT - 1);
|
|
buffer += c;
|
|
count -= c;
|
|
ret += c;
|
|
|
|
/* If values in the buffer are available so enable interrupts */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
if (me4000_buf_count
|
|
(ao_context->circ_buf, ME4000_AO_BUFFER_COUNT)) {
|
|
PDEBUG
|
|
("me4000_ao_write_cont():Enable Interrupts\n");
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_IRQ;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
}
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
}
|
|
}
|
|
|
|
if (filep->f_flags & O_NONBLOCK)
|
|
return (ret == 0) ? -EAGAIN : 2 * ret;
|
|
|
|
return 2 * ret;
|
|
}
|
|
|
|
static unsigned int me4000_ao_poll_cont(struct file *file_p, poll_table *wait)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
unsigned long mask = 0;
|
|
|
|
CALL_PDEBUG("me4000_ao_poll_cont() is executed\n");
|
|
|
|
ao_context = file_p->private_data;
|
|
|
|
poll_wait(file_p, &ao_context->wait_queue, wait);
|
|
|
|
/* Get free buffer */
|
|
if (me4000_space_to_end(ao_context->circ_buf, ME4000_AO_BUFFER_COUNT))
|
|
mask |= POLLOUT | POLLWRNORM;
|
|
|
|
CALL_PDEBUG("me4000_ao_poll_cont():Return mask %lX\n", mask);
|
|
|
|
return mask;
|
|
}
|
|
|
|
static int me4000_ao_fsync_cont(struct file *file_p, struct dentry *dentry_p,
|
|
int datasync)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
wait_queue_head_t queue;
|
|
|
|
CALL_PDEBUG("me4000_ao_fsync_cont() is executed\n");
|
|
|
|
ao_context = file_p->private_data;
|
|
init_waitqueue_head(&queue);
|
|
|
|
while (inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
wait_event_interruptible_timeout(queue,
|
|
!(inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM),
|
|
1);
|
|
if (ao_context->pipe_flag) {
|
|
printk(KERN_ERR
|
|
"%s:Broken pipe detected\n", __func__);
|
|
return -EPIPE;
|
|
}
|
|
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"%s:Wait on state machine interrupted\n",
|
|
__func__);
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ioctl_sing(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
|
|
CALL_PDEBUG("me4000_ao_ioctl_sing() is executed\n");
|
|
|
|
ao_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
return -ENOTTY;
|
|
PDEBUG("me4000_ao_ioctl_sing():Wrong magic number\n");
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AO_EX_TRIG_SETUP:
|
|
return me4000_ao_ex_trig_set_edge((int *)arg, ao_context);
|
|
case ME4000_AO_EX_TRIG_ENABLE:
|
|
return me4000_ao_ex_trig_enable(ao_context);
|
|
case ME4000_AO_EX_TRIG_DISABLE:
|
|
return me4000_ao_ex_trig_disable(ao_context);
|
|
case ME4000_AO_PRELOAD:
|
|
return me4000_ao_preload(ao_context);
|
|
case ME4000_AO_PRELOAD_UPDATE:
|
|
return me4000_ao_preload_update(ao_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ao_context->board_info);
|
|
case ME4000_AO_SIMULTANEOUS_EX_TRIG:
|
|
return me4000_ao_simultaneous_ex_trig(ao_context);
|
|
case ME4000_AO_SIMULTANEOUS_SW:
|
|
return me4000_ao_simultaneous_sw(ao_context);
|
|
case ME4000_AO_SIMULTANEOUS_DISABLE:
|
|
return me4000_ao_simultaneous_disable(ao_context);
|
|
case ME4000_AO_SIMULTANEOUS_UPDATE:
|
|
return
|
|
me4000_ao_simultaneous_update(
|
|
(struct me4000_ao_channel_list *)arg,
|
|
ao_context);
|
|
case ME4000_AO_EX_TRIG_TIMEOUT:
|
|
return me4000_ao_ex_trig_timeout((unsigned long *)arg,
|
|
ao_context);
|
|
case ME4000_AO_DISABLE_DO:
|
|
return me4000_ao_disable_do(ao_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"me4000_ao_ioctl_sing():Service number invalid\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ioctl_wrap(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
|
|
CALL_PDEBUG("me4000_ao_ioctl_wrap() is executed\n");
|
|
|
|
ao_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
return -ENOTTY;
|
|
PDEBUG("me4000_ao_ioctl_wrap():Wrong magic number\n");
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AO_START:
|
|
return me4000_ao_start((unsigned long *)arg, ao_context);
|
|
case ME4000_AO_STOP:
|
|
return me4000_ao_stop(ao_context);
|
|
case ME4000_AO_IMMEDIATE_STOP:
|
|
return me4000_ao_immediate_stop(ao_context);
|
|
case ME4000_AO_RESET:
|
|
return me4000_ao_reset(ao_context);
|
|
case ME4000_AO_TIMER_SET_DIVISOR:
|
|
return me4000_ao_timer_set_divisor((u32 *) arg, ao_context);
|
|
case ME4000_AO_EX_TRIG_SETUP:
|
|
return me4000_ao_ex_trig_set_edge((int *)arg, ao_context);
|
|
case ME4000_AO_EX_TRIG_ENABLE:
|
|
return me4000_ao_ex_trig_enable(ao_context);
|
|
case ME4000_AO_EX_TRIG_DISABLE:
|
|
return me4000_ao_ex_trig_disable(ao_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ao_context->board_info);
|
|
case ME4000_AO_FSM_STATE:
|
|
return me4000_ao_fsm_state((int *)arg, ao_context);
|
|
case ME4000_AO_ENABLE_DO:
|
|
return me4000_ao_enable_do(ao_context);
|
|
case ME4000_AO_DISABLE_DO:
|
|
return me4000_ao_disable_do(ao_context);
|
|
case ME4000_AO_SYNCHRONOUS_EX_TRIG:
|
|
return me4000_ao_synchronous_ex_trig(ao_context);
|
|
case ME4000_AO_SYNCHRONOUS_SW:
|
|
return me4000_ao_synchronous_sw(ao_context);
|
|
case ME4000_AO_SYNCHRONOUS_DISABLE:
|
|
return me4000_ao_synchronous_disable(ao_context);
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ioctl_cont(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ao_context *ao_context;
|
|
|
|
CALL_PDEBUG("me4000_ao_ioctl_cont() is executed\n");
|
|
|
|
ao_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
return -ENOTTY;
|
|
PDEBUG("me4000_ao_ioctl_cont():Wrong magic number\n");
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AO_START:
|
|
return me4000_ao_start((unsigned long *)arg, ao_context);
|
|
case ME4000_AO_STOP:
|
|
return me4000_ao_stop(ao_context);
|
|
case ME4000_AO_IMMEDIATE_STOP:
|
|
return me4000_ao_immediate_stop(ao_context);
|
|
case ME4000_AO_RESET:
|
|
return me4000_ao_reset(ao_context);
|
|
case ME4000_AO_TIMER_SET_DIVISOR:
|
|
return me4000_ao_timer_set_divisor((u32 *) arg, ao_context);
|
|
case ME4000_AO_EX_TRIG_SETUP:
|
|
return me4000_ao_ex_trig_set_edge((int *)arg, ao_context);
|
|
case ME4000_AO_EX_TRIG_ENABLE:
|
|
return me4000_ao_ex_trig_enable(ao_context);
|
|
case ME4000_AO_EX_TRIG_DISABLE:
|
|
return me4000_ao_ex_trig_disable(ao_context);
|
|
case ME4000_AO_ENABLE_DO:
|
|
return me4000_ao_enable_do(ao_context);
|
|
case ME4000_AO_DISABLE_DO:
|
|
return me4000_ao_disable_do(ao_context);
|
|
case ME4000_AO_FSM_STATE:
|
|
return me4000_ao_fsm_state((int *)arg, ao_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ao_context->board_info);
|
|
case ME4000_AO_SYNCHRONOUS_EX_TRIG:
|
|
return me4000_ao_synchronous_ex_trig(ao_context);
|
|
case ME4000_AO_SYNCHRONOUS_SW:
|
|
return me4000_ao_synchronous_sw(ao_context);
|
|
case ME4000_AO_SYNCHRONOUS_DISABLE:
|
|
return me4000_ao_synchronous_disable(ao_context);
|
|
case ME4000_AO_GET_FREE_BUFFER:
|
|
return me4000_ao_get_free_buffer((unsigned long *)arg,
|
|
ao_context);
|
|
default:
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_start(unsigned long *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long ref;
|
|
unsigned long timeout;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_start() is executed\n");
|
|
|
|
if (get_user(timeout, arg)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_start():Cannot copy data from user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp &= ~(ME4000_AO_CTRL_BIT_STOP | ME4000_AO_CTRL_BIT_IMMEDIATE_STOP);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
if ((tmp & ME4000_AO_CTRL_BIT_ENABLE_EX_TRIG)) {
|
|
if (timeout) {
|
|
ref = jiffies;
|
|
while (!
|
|
(inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_start():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
/* kernel 2.6 has different definitions for HZ
|
|
* in user and kernel space */
|
|
if ((jiffies - ref) > (timeout * HZ / USER_HZ)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_start():Timeout reached\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
me4000_outl(0x8000, ao_context->single_reg);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_stop(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long flags;
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
CALL_PDEBUG("me4000_ao_stop() is executed\n");
|
|
|
|
/* Set the stop bit */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_STOP;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
while (inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_stop():Wait on state machine after stop interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
/* Clear the stop bit */
|
|
/* tmp &= ~ME4000_AO_CTRL_BIT_STOP; */
|
|
/* me4000_outl(tmp, ao_context->ctrl_reg); */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_immediate_stop(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long flags;
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
CALL_PDEBUG("me4000_ao_immediate_stop() is executed\n");
|
|
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_STOP | ME4000_AO_CTRL_BIT_IMMEDIATE_STOP;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
while (inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_immediate_stop():Wait on state machine after stop interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
/* Clear the stop bits */
|
|
/* tmp &= ~(ME4000_AO_CTRL_BIT_STOP | ME4000_AO_CTRL_BIT_IMMEDIATE_STOP); */
|
|
/* me4000_outl(tmp, ao_context->ctrl_reg); */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_timer_set_divisor(u32 *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 divisor;
|
|
u32 tmp;
|
|
|
|
CALL_PDEBUG("me4000_ao_timer set_divisor() is executed\n");
|
|
|
|
if (get_user(divisor, arg))
|
|
return -EFAULT;
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_timer_set_divisor():Can't set timer while DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
PDEBUG("me4000_ao_timer set_divisor():Divisor from user = %d\n",
|
|
divisor);
|
|
|
|
/* Check if the divisor is right. ME4000_AO_MIN_TICKS is the lowest */
|
|
if (divisor < ME4000_AO_MIN_TICKS) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_timer set_divisor():Divisor to low\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Fix bug in Firmware */
|
|
divisor -= 2;
|
|
|
|
PDEBUG("me4000_ao_timer set_divisor():Divisor to HW = %d\n", divisor);
|
|
|
|
/* Write the divisor */
|
|
me4000_outl(divisor, ao_context->timer_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ex_trig_set_edge(int *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
int mode;
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_ex_trig_set_edge() is executed\n");
|
|
|
|
if (get_user(mode, arg))
|
|
return -EFAULT;
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_ex_trig_set_edge():Can't set trigger while DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (mode == ME4000_AO_TRIGGER_EXT_EDGE_RISING) {
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AO_CTRL_BIT_EX_TRIG_EDGE |
|
|
ME4000_AO_CTRL_BIT_EX_TRIG_BOTH);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
} else if (mode == ME4000_AO_TRIGGER_EXT_EDGE_FALLING) {
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp &= ~ME4000_AO_CTRL_BIT_EX_TRIG_BOTH;
|
|
tmp |= ME4000_AO_CTRL_BIT_EX_TRIG_EDGE;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
} else if (mode == ME4000_AO_TRIGGER_EXT_EDGE_BOTH) {
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_AO_CTRL_BIT_EX_TRIG_EDGE |
|
|
ME4000_AO_CTRL_BIT_EX_TRIG_BOTH;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"me4000_ao_ex_trig_set_edge():Invalid trigger mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ex_trig_enable(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_ex_trig_enable() is executed\n");
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_ex_trig_enable():Can't enable trigger while DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_EX_TRIG;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ex_trig_disable(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_ex_trig_disable() is executed\n");
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_ex_trig_disable():Can't disable trigger while DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp &= ~ME4000_AO_CTRL_BIT_ENABLE_EX_TRIG;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_simultaneous_disable(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
|
|
CALL_PDEBUG("me4000_ao_simultaneous_disable() is executed\n");
|
|
|
|
/* Check if the state machine is stopped */
|
|
/* Be careful here because this function is called from
|
|
me4000_ao_synchronous disable */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_simultaneous_disable():Can't disable while DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
/* Disable preload bit */
|
|
tmp &= ~(0x1 << ao_context->index);
|
|
/* Disable hw simultaneous bit */
|
|
tmp &= ~(0x1 << (ao_context->index + 16));
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_simultaneous_ex_trig(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
|
|
CALL_PDEBUG("me4000_ao_simultaneous_ex_trig() is executed\n");
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
/* Enable preload bit */
|
|
tmp |= (0x1 << ao_context->index);
|
|
/* Enable hw simulatenous bit */
|
|
tmp |= (0x1 << (ao_context->index + 16));
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_simultaneous_sw(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
|
|
CALL_PDEBUG("me4000_ao_simultaneous_sw() is executed\n");
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
/* Enable preload bit */
|
|
tmp |= (0x1 << ao_context->index);
|
|
/* Enable hw simulatenous bit */
|
|
tmp &= ~(0x1 << (ao_context->index + 16));
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_preload(struct me4000_ao_context *ao_context)
|
|
{
|
|
CALL_PDEBUG("me4000_ao_preload() is executed\n");
|
|
return me4000_ao_simultaneous_sw(ao_context);
|
|
}
|
|
|
|
static int me4000_ao_preload_update(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
u32 ctrl;
|
|
struct list_head *entry;
|
|
|
|
CALL_PDEBUG("me4000_ao_preload_update() is executed\n");
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
list_for_each(entry, &ao_context->board_info->ao_context_list) {
|
|
/* The channels we update must be in the following state :
|
|
- Mode A
|
|
- Hardware trigger is disabled
|
|
- Corresponding simultaneous bit is reset
|
|
*/
|
|
ctrl = me4000_inl(ao_context->ctrl_reg);
|
|
if (!
|
|
(ctrl &
|
|
(ME4000_AO_CTRL_BIT_MODE_0 | ME4000_AO_CTRL_BIT_MODE_1 |
|
|
ME4000_AO_CTRL_BIT_ENABLE_EX_TRIG))) {
|
|
if (!
|
|
(tmp &
|
|
(0x1 <<
|
|
(((struct me4000_ao_context *)entry)->index
|
|
+ 16)))) {
|
|
tmp &=
|
|
~(0x1 <<
|
|
(((struct me4000_ao_context *)entry)->
|
|
index));
|
|
}
|
|
}
|
|
}
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_simultaneous_update(struct me4000_ao_channel_list *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
int err;
|
|
int i;
|
|
u32 tmp;
|
|
struct me4000_ao_channel_list channels;
|
|
|
|
CALL_PDEBUG("me4000_ao_simultaneous_update() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&channels, arg,
|
|
sizeof(struct me4000_ao_channel_list));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_simultaneous_update():Can't copy command\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
channels.list =
|
|
kzalloc(sizeof(unsigned long) * channels.count, GFP_KERNEL);
|
|
if (!channels.list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_simultaneous_update():Can't get buffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Copy channel list from user */
|
|
err =
|
|
copy_from_user(channels.list, arg->list,
|
|
sizeof(unsigned long) * channels.count);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_simultaneous_update():Can't copy list\n");
|
|
kfree(channels.list);
|
|
return -EFAULT;
|
|
}
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
for (i = 0; i < channels.count; i++) {
|
|
if (channels.list[i] >
|
|
ao_context->board_info->board_p->ao.count) {
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
kfree(channels.list);
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_simultaneous_update():Invalid board number specified\n");
|
|
return -EFAULT;
|
|
}
|
|
/* Clear the preload bit */
|
|
tmp &= ~(0x1 << channels.list[i]);
|
|
/* Clear the hw simultaneous bit */
|
|
tmp &= ~(0x1 << (channels.list[i] + 16));
|
|
}
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
kfree(channels.list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_synchronous_ex_trig(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_synchronous_ex_trig() is executed\n");
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_synchronous_ex_trig(): DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
/* Disable synchronous sw bit */
|
|
tmp &= ~(0x1 << ao_context->index);
|
|
/* Enable synchronous hw bit */
|
|
tmp |= 0x1 << (ao_context->index + 16);
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
/* Make runnable */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
if (tmp & (ME4000_AO_CTRL_BIT_MODE_0 | ME4000_AO_CTRL_BIT_MODE_1)) {
|
|
tmp &=
|
|
~(ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
}
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_synchronous_sw(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_synchronous_sw() is executed\n");
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR "me4000_ao_synchronous_sw(): DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock(&ao_context->board_info->preload_lock);
|
|
tmp = me4000_inl(ao_context->preload_reg);
|
|
/* Enable synchronous sw bit */
|
|
tmp |= 0x1 << ao_context->index;
|
|
/* Disable synchronous hw bit */
|
|
tmp &= ~(0x1 << (ao_context->index + 16));
|
|
me4000_outl(tmp, ao_context->preload_reg);
|
|
spin_unlock(&ao_context->board_info->preload_lock);
|
|
|
|
/* Make runnable */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
if (tmp & (ME4000_AO_CTRL_BIT_MODE_0 | ME4000_AO_CTRL_BIT_MODE_1)) {
|
|
tmp &=
|
|
~(ME4000_AO_CTRL_BIT_STOP |
|
|
ME4000_AO_CTRL_BIT_IMMEDIATE_STOP);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
}
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_synchronous_disable(struct me4000_ao_context *ao_context)
|
|
{
|
|
return me4000_ao_simultaneous_disable(ao_context);
|
|
}
|
|
|
|
static int me4000_ao_get_free_buffer(unsigned long *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
unsigned long c;
|
|
int err;
|
|
|
|
c = me4000_buf_space(ao_context->circ_buf, ME4000_AO_BUFFER_COUNT);
|
|
|
|
err = copy_to_user(arg, &c, sizeof(unsigned long));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"%s:Can't copy to user space\n", __func__);
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_ex_trig_timeout(unsigned long *arg,
|
|
struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long ref;
|
|
unsigned long timeout;
|
|
|
|
CALL_PDEBUG("me4000_ao_ex_trig_timeout() is executed\n");
|
|
|
|
if (get_user(timeout, arg)) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_ex_trig_timeout():Cannot copy data from user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
|
|
if ((tmp & ME4000_AO_CTRL_BIT_ENABLE_EX_TRIG)) {
|
|
if (timeout) {
|
|
ref = jiffies;
|
|
while ((inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_ex_trig_timeout():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
/* kernel 2.6 has different definitions for HZ
|
|
* in user and kernel space */
|
|
if ((jiffies - ref) > (timeout * HZ / USER_HZ)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_ex_trig_timeout():Timeout reached\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
} else {
|
|
while ((inl(ao_context->status_reg) &
|
|
ME4000_AO_STATUS_BIT_FSM)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_ex_trig_timeout():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ao_ex_trig_timeout():External Trigger is not enabled\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_enable_do(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_enable_do() is executed\n");
|
|
|
|
/* Only available for analog output 3 */
|
|
if (ao_context->index != 3) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_enable_do():Only available for analog output 3\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR "me4000_ao_enable_do(): DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Set the stop bit */
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_ENABLE_DO;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_disable_do(struct me4000_ao_context *ao_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ao_disable_do() is executed\n");
|
|
|
|
/* Only available for analog output 3 */
|
|
if (ao_context->index != 3) {
|
|
printk(KERN_ERR
|
|
"me4000_ao_disable():Only available for analog output 3\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
/* Check if the state machine is stopped */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
if (tmp & ME4000_AO_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR "me4000_ao_disable_do(): DAC is running\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
spin_lock_irqsave(&ao_context->int_lock, flags);
|
|
tmp = inl(ao_context->ctrl_reg);
|
|
tmp &= ~(ME4000_AO_CTRL_BIT_ENABLE_DO);
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ao_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ao_fsm_state(int *arg, struct me4000_ao_context *ao_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ao_fsm_state() is executed\n");
|
|
|
|
tmp =
|
|
(me4000_inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM) ? 1
|
|
: 0;
|
|
|
|
if (ao_context->pipe_flag) {
|
|
printk(KERN_ERR "me4000_ao_fsm_state():Broken pipe detected\n");
|
|
return -EPIPE;
|
|
}
|
|
|
|
if (put_user(tmp, arg)) {
|
|
printk(KERN_ERR "me4000_ao_fsm_state():Cannot copy to user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------- Analog input stuff -------------------------------*/
|
|
|
|
static int me4000_ai_prepare(struct me4000_ai_context *ai_context)
|
|
{
|
|
wait_queue_head_t queue;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_ai_prepare() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Set the new mode and stop bits */
|
|
me4000_outl(ai_context->
|
|
mode | ME4000_AI_CTRL_BIT_STOP |
|
|
ME4000_AI_CTRL_BIT_IMMEDIATE_STOP, ai_context->ctrl_reg);
|
|
|
|
/* Set the timer registers */
|
|
ai_context->chan_timer = 66;
|
|
ai_context->chan_pre_timer = 66;
|
|
ai_context->scan_timer_low = 0;
|
|
ai_context->scan_timer_high = 0;
|
|
|
|
me4000_outl(65, ai_context->chan_timer_reg);
|
|
me4000_outl(65, ai_context->chan_pre_timer_reg);
|
|
me4000_outl(0, ai_context->scan_timer_low_reg);
|
|
me4000_outl(0, ai_context->scan_timer_high_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_low_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_high_reg);
|
|
|
|
ai_context->channel_list_count = 0;
|
|
|
|
if (ai_context->mode) {
|
|
/* Request the interrupt line */
|
|
err =
|
|
request_irq(ai_context->irq, me4000_ai_isr,
|
|
IRQF_DISABLED | IRQF_SHARED, ME4000_NAME,
|
|
ai_context);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_prepare():Can't get interrupt line");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Allocate circular buffer */
|
|
ai_context->circ_buf.buf =
|
|
kzalloc(ME4000_AI_BUFFER_SIZE, GFP_KERNEL);
|
|
if (!ai_context->circ_buf.buf) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_prepare():Can't get circular buffer\n");
|
|
free_irq(ai_context->irq, ai_context);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Clear the circular buffer */
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_reset(struct me4000_ai_context *ai_context)
|
|
{
|
|
wait_queue_head_t queue;
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_reset() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/*
|
|
* First stop conversion of the state machine before reconfigure.
|
|
* If not stopped before configuring mode, it could
|
|
* walk in a undefined state.
|
|
*/
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
while (inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_reset():Wait on state machine after stop interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
/* Clear the control register and set the stop bits */
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
me4000_outl(ME4000_AI_CTRL_BIT_IMMEDIATE_STOP | ME4000_AI_CTRL_BIT_STOP,
|
|
ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
/* Reset timer registers */
|
|
ai_context->chan_timer = 66;
|
|
ai_context->chan_pre_timer = 66;
|
|
ai_context->scan_timer_low = 0;
|
|
ai_context->scan_timer_high = 0;
|
|
ai_context->sample_counter = 0;
|
|
ai_context->sample_counter_reload = 0;
|
|
|
|
me4000_outl(65, ai_context->chan_timer_reg);
|
|
me4000_outl(65, ai_context->chan_pre_timer_reg);
|
|
me4000_outl(0, ai_context->scan_timer_low_reg);
|
|
me4000_outl(0, ai_context->scan_timer_high_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_low_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_high_reg);
|
|
me4000_outl(0, ai_context->sample_counter_reg);
|
|
|
|
ai_context->channel_list_count = 0;
|
|
|
|
/* Clear the circular buffer */
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ioctl_sing(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
|
|
CALL_PDEBUG("me4000_ai_ioctl_sing() is executed\n");
|
|
|
|
ai_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_ai_ioctl_sing():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_ioctl_sing():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AI_SINGLE:
|
|
return me4000_ai_single((struct me4000_ai_single *)arg,
|
|
ai_context);
|
|
case ME4000_AI_EX_TRIG_ENABLE:
|
|
return me4000_ai_ex_trig_enable(ai_context);
|
|
case ME4000_AI_EX_TRIG_DISABLE:
|
|
return me4000_ai_ex_trig_disable(ai_context);
|
|
case ME4000_AI_EX_TRIG_SETUP:
|
|
return me4000_ai_ex_trig_setup((struct me4000_ai_trigger *)arg,
|
|
ai_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ai_context->board_info);
|
|
case ME4000_AI_OFFSET_ENABLE:
|
|
return me4000_ai_offset_enable(ai_context);
|
|
case ME4000_AI_OFFSET_DISABLE:
|
|
return me4000_ai_offset_disable(ai_context);
|
|
case ME4000_AI_FULLSCALE_ENABLE:
|
|
return me4000_ai_fullscale_enable(ai_context);
|
|
case ME4000_AI_FULLSCALE_DISABLE:
|
|
return me4000_ai_fullscale_disable(ai_context);
|
|
case ME4000_AI_EEPROM_READ:
|
|
return me4000_eeprom_read((struct me4000_eeprom *)arg,
|
|
ai_context);
|
|
case ME4000_AI_EEPROM_WRITE:
|
|
return me4000_eeprom_write((struct me4000_eeprom *)arg,
|
|
ai_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"me4000_ai_ioctl_sing():Invalid service number\n");
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_single(struct me4000_ai_single *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
struct me4000_ai_single cmd;
|
|
int err;
|
|
u32 tmp;
|
|
wait_queue_head_t queue;
|
|
unsigned long jiffy;
|
|
|
|
CALL_PDEBUG("me4000_ai_single() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_ai_single));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Check range parameter */
|
|
switch (cmd.range) {
|
|
case ME4000_AI_LIST_RANGE_BIPOLAR_10:
|
|
case ME4000_AI_LIST_RANGE_BIPOLAR_2_5:
|
|
case ME4000_AI_LIST_RANGE_UNIPOLAR_10:
|
|
case ME4000_AI_LIST_RANGE_UNIPOLAR_2_5:
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Invalid range specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check mode and channel number */
|
|
switch (cmd.mode) {
|
|
case ME4000_AI_LIST_INPUT_SINGLE_ENDED:
|
|
if (cmd.channel >= ai_context->board_info->board_p->ai.count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Analog input is not available\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case ME4000_AI_LIST_INPUT_DIFFERENTIAL:
|
|
if (cmd.channel >=
|
|
ai_context->board_info->board_p->ai.diff_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Analog input is not available in differential mode\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Invalid mode specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Clear channel list, data fifo and both stop bits */
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_DATA_FIFO |
|
|
ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP);
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
/* Enable channel list and data fifo */
|
|
tmp |= ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_DATA_FIFO;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
/* Generate channel list entry */
|
|
me4000_outl(cmd.channel | cmd.range | cmd.
|
|
mode | ME4000_AI_LIST_LAST_ENTRY,
|
|
ai_context->channel_list_reg);
|
|
|
|
/* Set the timer to maximum */
|
|
me4000_outl(66, ai_context->chan_timer_reg);
|
|
me4000_outl(66, ai_context->chan_pre_timer_reg);
|
|
|
|
if (tmp & ME4000_AI_CTRL_BIT_EX_TRIG) {
|
|
jiffy = jiffies;
|
|
while (!
|
|
(me4000_inl(ai_context->status_reg) &
|
|
ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
/* 2.6 has different definitions for HZ in user and kernel space */
|
|
if (((jiffies - jiffy) > (cmd.timeout * HZ / USER_HZ)) && cmd.timeout) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Timeout reached\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
} else {
|
|
/* Start conversion */
|
|
me4000_inl(ai_context->start_reg);
|
|
|
|
/* Wait until ready */
|
|
udelay(10);
|
|
if (!
|
|
(me4000_inl(ai_context->status_reg) &
|
|
ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Value not available after wait\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
/* Read value from data fifo */
|
|
cmd.value = me4000_inl(ai_context->data_reg) & 0xFFFF;
|
|
|
|
/* Copy result back to user */
|
|
err = copy_to_user(arg, &cmd, sizeof(struct me4000_ai_single));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_single():Can't copy to user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ioctl_sw(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
|
|
CALL_PDEBUG("me4000_ai_ioctl_sw() is executed\n");
|
|
|
|
ai_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_ai_ioctl_sw():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_ioctl_sw():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AI_SC_SETUP:
|
|
return me4000_ai_sc_setup((struct me4000_ai_sc *)arg,
|
|
ai_context);
|
|
case ME4000_AI_CONFIG:
|
|
return me4000_ai_config((struct me4000_ai_config *)arg,
|
|
ai_context);
|
|
case ME4000_AI_START:
|
|
return me4000_ai_start(ai_context);
|
|
case ME4000_AI_STOP:
|
|
return me4000_ai_stop(ai_context);
|
|
case ME4000_AI_IMMEDIATE_STOP:
|
|
return me4000_ai_immediate_stop(ai_context);
|
|
case ME4000_AI_FSM_STATE:
|
|
return me4000_ai_fsm_state((int *)arg, ai_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ai_context->board_info);
|
|
case ME4000_AI_EEPROM_READ:
|
|
return me4000_eeprom_read((struct me4000_eeprom *)arg,
|
|
ai_context);
|
|
case ME4000_AI_EEPROM_WRITE:
|
|
return me4000_eeprom_write((struct me4000_eeprom *)arg,
|
|
ai_context);
|
|
case ME4000_AI_GET_COUNT_BUFFER:
|
|
return me4000_ai_get_count_buffer((unsigned long *)arg,
|
|
ai_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"%s:Invalid service number %d\n", __func__, service);
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ioctl_ext(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
|
|
CALL_PDEBUG("me4000_ai_ioctl_ext() is executed\n");
|
|
|
|
ai_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_ai_ioctl_ext():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_ioctl_ext():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_AI_SC_SETUP:
|
|
return me4000_ai_sc_setup((struct me4000_ai_sc *)arg,
|
|
ai_context);
|
|
case ME4000_AI_CONFIG:
|
|
return me4000_ai_config((struct me4000_ai_config *)arg,
|
|
ai_context);
|
|
case ME4000_AI_START:
|
|
return me4000_ai_start_ex((unsigned long *)arg, ai_context);
|
|
case ME4000_AI_STOP:
|
|
return me4000_ai_stop(ai_context);
|
|
case ME4000_AI_IMMEDIATE_STOP:
|
|
return me4000_ai_immediate_stop(ai_context);
|
|
case ME4000_AI_EX_TRIG_ENABLE:
|
|
return me4000_ai_ex_trig_enable(ai_context);
|
|
case ME4000_AI_EX_TRIG_DISABLE:
|
|
return me4000_ai_ex_trig_disable(ai_context);
|
|
case ME4000_AI_EX_TRIG_SETUP:
|
|
return me4000_ai_ex_trig_setup((struct me4000_ai_trigger *)arg,
|
|
ai_context);
|
|
case ME4000_AI_FSM_STATE:
|
|
return me4000_ai_fsm_state((int *)arg, ai_context);
|
|
case ME4000_GET_USER_INFO:
|
|
return me4000_get_user_info((struct me4000_user_info *)arg,
|
|
ai_context->board_info);
|
|
case ME4000_AI_GET_COUNT_BUFFER:
|
|
return me4000_ai_get_count_buffer((unsigned long *)arg,
|
|
ai_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"%s:Invalid service number %d\n", __func__ , service);
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_fasync(int fd, struct file *file_p, int mode)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
|
|
CALL_PDEBUG("me4000_ao_fasync_cont() is executed\n");
|
|
|
|
ai_context = file_p->private_data;
|
|
return fasync_helper(fd, file_p, mode, &ai_context->fasync_p);
|
|
}
|
|
|
|
static int me4000_ai_config(struct me4000_ai_config *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
struct me4000_ai_config cmd;
|
|
u32 *list = NULL;
|
|
u32 mode;
|
|
int i;
|
|
int err;
|
|
wait_queue_head_t queue;
|
|
u64 scan;
|
|
u32 tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_config() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Check if conversion is stopped */
|
|
if (inl(ai_context->ctrl_reg) & ME4000_AI_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Conversion is not stopped\n");
|
|
err = -EBUSY;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_ai_config));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Can't copy from user space\n");
|
|
err = -EFAULT;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
PDEBUG
|
|
("me4000_ai_config():chan = %ld, pre_chan = %ld, scan_low = %ld, scan_high = %ld, count = %ld\n",
|
|
cmd.timer.chan, cmd.timer.pre_chan, cmd.timer.scan_low,
|
|
cmd.timer.scan_high, cmd.channel_list.count);
|
|
|
|
/* Check whether sample and hold is available for this board */
|
|
if (cmd.sh) {
|
|
if (!ai_context->board_info->board_p->ai.sh_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Sample and Hold is not available for this board\n");
|
|
err = -ENODEV;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
|
|
/* Check the channel list size */
|
|
if (cmd.channel_list.count > ME4000_AI_CHANNEL_LIST_COUNT) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_config():Channel list is to large\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Copy channel list from user */
|
|
list = kmalloc(sizeof(u32) * cmd.channel_list.count, GFP_KERNEL);
|
|
if (!list) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Can't get memory for channel list\n");
|
|
err = -ENOMEM;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
err =
|
|
copy_from_user(list, cmd.channel_list.list,
|
|
sizeof(u32) * cmd.channel_list.count);
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Can't copy from user space\n");
|
|
err = -EFAULT;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Check if last entry bit is set */
|
|
if (!(list[cmd.channel_list.count - 1] & ME4000_AI_LIST_LAST_ENTRY)) {
|
|
printk(KERN_WARNING
|
|
"me4000_ai_config():Last entry bit is not set\n");
|
|
list[cmd.channel_list.count - 1] |= ME4000_AI_LIST_LAST_ENTRY;
|
|
}
|
|
|
|
/* Check whether mode is equal for all entries */
|
|
mode = list[0] & 0x20;
|
|
for (i = 0; i < cmd.channel_list.count; i++) {
|
|
if ((list[i] & 0x20) != mode) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Mode is not equal for all entries\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
|
|
/* Check whether channels are available for this mode */
|
|
if (mode == ME4000_AI_LIST_INPUT_SINGLE_ENDED) {
|
|
for (i = 0; i < cmd.channel_list.count; i++) {
|
|
if ((list[i] & 0x1F) >=
|
|
ai_context->board_info->board_p->ai.count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Channel is not available for single ended\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
} else if (mode == ME4000_AI_LIST_INPUT_DIFFERENTIAL) {
|
|
for (i = 0; i < cmd.channel_list.count; i++) {
|
|
if ((list[i] & 0x1F) >=
|
|
ai_context->board_info->board_p->ai.diff_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Channel is not available for differential\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Check if bipolar is set for all entries when in differential mode */
|
|
if (mode == ME4000_AI_LIST_INPUT_DIFFERENTIAL) {
|
|
for (i = 0; i < cmd.channel_list.count; i++) {
|
|
if ((list[i] & 0xC0) != ME4000_AI_LIST_RANGE_BIPOLAR_10
|
|
&& (list[i] & 0xC0) !=
|
|
ME4000_AI_LIST_RANGE_BIPOLAR_2_5) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Bipolar is not selected in differential mode\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ai_context->mode != ME4000_AI_ACQ_MODE_EXT_SINGLE_VALUE) {
|
|
/* Check for minimum channel divisor */
|
|
if (cmd.timer.chan < ME4000_AI_MIN_TICKS) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Channel timer divisor is to low\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Check if minimum channel divisor is adjusted when sample and hold is activated */
|
|
if ((cmd.sh) && (cmd.timer.chan != ME4000_AI_MIN_TICKS)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Channel timer divisor must be at minimum when sample and hold is activated\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Check for minimum channel pre divisor */
|
|
if (cmd.timer.pre_chan < ME4000_AI_MIN_TICKS) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Channel pre timer divisor is to low\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
|
|
/* Write the channel timers */
|
|
me4000_outl(cmd.timer.chan - 1, ai_context->chan_timer_reg);
|
|
me4000_outl(cmd.timer.pre_chan - 1,
|
|
ai_context->chan_pre_timer_reg);
|
|
|
|
/* Save the timer values in the board context */
|
|
ai_context->chan_timer = cmd.timer.chan;
|
|
ai_context->chan_pre_timer = cmd.timer.pre_chan;
|
|
|
|
if (ai_context->mode != ME4000_AI_ACQ_MODE_EXT_SINGLE_CHANLIST) {
|
|
/* Check for scan timer divisor */
|
|
scan =
|
|
(u64) cmd.timer.scan_low | ((u64) cmd.timer.
|
|
scan_high << 32);
|
|
if (scan != 0) {
|
|
if (scan <
|
|
cmd.channel_list.count * cmd.timer.chan +
|
|
1) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_config():Scan timer divisor is to low\n");
|
|
err = -EINVAL;
|
|
goto AI_CONFIG_ERR;
|
|
}
|
|
}
|
|
|
|
/* Write the scan timers */
|
|
if (scan != 0) {
|
|
scan--;
|
|
tmp = (u32) (scan & 0xFFFFFFFF);
|
|
me4000_outl(tmp,
|
|
ai_context->scan_timer_low_reg);
|
|
tmp = (u32) ((scan >> 32) & 0xFFFFFFFF);
|
|
me4000_outl(tmp,
|
|
ai_context->scan_timer_high_reg);
|
|
|
|
scan =
|
|
scan - (cmd.timer.chan - 1) +
|
|
(cmd.timer.pre_chan - 1);
|
|
tmp = (u32) (scan & 0xFFFFFFFF);
|
|
me4000_outl(tmp,
|
|
ai_context->scan_pre_timer_low_reg);
|
|
tmp = (u32) ((scan >> 32) & 0xFFFFFFFF);
|
|
me4000_outl(tmp,
|
|
ai_context->
|
|
scan_pre_timer_high_reg);
|
|
} else {
|
|
me4000_outl(0x0,
|
|
ai_context->scan_timer_low_reg);
|
|
me4000_outl(0x0,
|
|
ai_context->scan_timer_high_reg);
|
|
|
|
me4000_outl(0x0,
|
|
ai_context->scan_pre_timer_low_reg);
|
|
me4000_outl(0x0,
|
|
ai_context->
|
|
scan_pre_timer_high_reg);
|
|
}
|
|
|
|
ai_context->scan_timer_low = cmd.timer.scan_low;
|
|
ai_context->scan_timer_high = cmd.timer.scan_high;
|
|
}
|
|
}
|
|
|
|
/* Clear the channel list */
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_CHANNEL_FIFO;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_CHANNEL_FIFO;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
/* Write the channel list */
|
|
for (i = 0; i < cmd.channel_list.count; i++)
|
|
me4000_outl(list[i], ai_context->channel_list_reg);
|
|
|
|
/* Setup sample and hold */
|
|
if (cmd.sh) {
|
|
tmp |= ME4000_AI_CTRL_BIT_SAMPLE_HOLD;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
} else {
|
|
tmp &= ~ME4000_AI_CTRL_BIT_SAMPLE_HOLD;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
}
|
|
|
|
/* Save the channel list size in the board context */
|
|
ai_context->channel_list_count = cmd.channel_list.count;
|
|
|
|
kfree(list);
|
|
|
|
return 0;
|
|
|
|
AI_CONFIG_ERR:
|
|
|
|
/* Reset the timers */
|
|
ai_context->chan_timer = 66;
|
|
ai_context->chan_pre_timer = 66;
|
|
ai_context->scan_timer_low = 0;
|
|
ai_context->scan_timer_high = 0;
|
|
|
|
me4000_outl(65, ai_context->chan_timer_reg);
|
|
me4000_outl(65, ai_context->chan_pre_timer_reg);
|
|
me4000_outl(0, ai_context->scan_timer_high_reg);
|
|
me4000_outl(0, ai_context->scan_timer_low_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_high_reg);
|
|
me4000_outl(0, ai_context->scan_pre_timer_low_reg);
|
|
|
|
ai_context->channel_list_count = 0;
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_SAMPLE_HOLD);
|
|
|
|
kfree(list);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
static int ai_common_start(struct me4000_ai_context *ai_context)
|
|
{
|
|
u32 tmp;
|
|
CALL_PDEBUG("ai_common_start() is executed\n");
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
/* Check if conversion is stopped */
|
|
if (tmp & ME4000_AI_STATUS_BIT_FSM) {
|
|
printk(KERN_ERR
|
|
"ME4000:ai_common_start():Conversion is not stopped\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Clear data fifo, disable all interrupts, clear sample counter reload */
|
|
tmp &= ~(ME4000_AI_CTRL_BIT_DATA_FIFO | ME4000_AI_CTRL_BIT_LE_IRQ |
|
|
ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_SC_RELOAD);
|
|
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
/* Clear circular buffer */
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
|
|
/* Enable data fifo */
|
|
tmp |= ME4000_AI_CTRL_BIT_DATA_FIFO;
|
|
|
|
/* Determine interrupt setup */
|
|
if (ai_context->sample_counter && !ai_context->sample_counter_reload) {
|
|
/* Enable Half Full Interrupt and Sample Counter Interrupt */
|
|
tmp |= ME4000_AI_CTRL_BIT_SC_IRQ | ME4000_AI_CTRL_BIT_HF_IRQ;
|
|
} else if (ai_context->sample_counter
|
|
&& ai_context->sample_counter_reload) {
|
|
if (ai_context->sample_counter <= ME4000_AI_FIFO_COUNT / 2) {
|
|
/* Enable only Sample Counter Interrupt */
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_SC_RELOAD;
|
|
} else {
|
|
/* Enable Half Full Interrupt and Sample Counter Interrupt */
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_HF_IRQ |
|
|
ME4000_AI_CTRL_BIT_SC_RELOAD;
|
|
}
|
|
} else {
|
|
/* Enable only Half Full Interrupt */
|
|
tmp |= ME4000_AI_CTRL_BIT_HF_IRQ;
|
|
}
|
|
|
|
/* Clear the stop bits */
|
|
tmp &= ~(ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP);
|
|
|
|
/* Write setup to hardware */
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
/* Write sample counter */
|
|
me4000_outl(ai_context->sample_counter, ai_context->sample_counter_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_start(struct me4000_ai_context *ai_context)
|
|
{
|
|
int err;
|
|
CALL_PDEBUG("me4000_ai_start() is executed\n");
|
|
|
|
/* Prepare Hardware */
|
|
err = ai_common_start(ai_context);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Start conversion by dummy read */
|
|
me4000_inl(ai_context->start_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_start_ex(unsigned long *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
int err;
|
|
wait_queue_head_t queue;
|
|
unsigned long ref;
|
|
unsigned long timeout;
|
|
|
|
CALL_PDEBUG("me4000_ai_start_ex() is executed\n");
|
|
|
|
if (get_user(timeout, arg)) {
|
|
printk(KERN_ERR
|
|
"me4000_ai_start_ex():Cannot copy data from user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Prepare Hardware */
|
|
err = ai_common_start(ai_context);
|
|
if (err)
|
|
return err;
|
|
|
|
if (timeout) {
|
|
ref = jiffies;
|
|
while (!(inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_start_ex():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
/* 2.6 has different definitions for HZ in user and kernel space */
|
|
if ((jiffies - ref) > (timeout * HZ / USER_HZ)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_start_ex():Timeout reached\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
} else {
|
|
while (!(inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM)) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_start_ex():Wait on start of state machine interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_stop(struct me4000_ai_context *ai_context)
|
|
{
|
|
wait_queue_head_t queue;
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_stop() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Disable irqs and clear data fifo */
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_DATA_FIFO);
|
|
/* Stop conversion of the state machine */
|
|
tmp |= ME4000_AI_CTRL_BIT_STOP;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
/* Clear circular buffer */
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
|
|
while (inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_stop():Wait on state machine after stop interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_immediate_stop(struct me4000_ai_context *ai_context)
|
|
{
|
|
wait_queue_head_t queue;
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_stop() is executed\n");
|
|
|
|
init_waitqueue_head(&queue);
|
|
|
|
/* Disable irqs and clear data fifo */
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_DATA_FIFO);
|
|
/* Stop conversion of the state machine */
|
|
tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
/* Clear circular buffer */
|
|
ai_context->circ_buf.head = 0;
|
|
ai_context->circ_buf.tail = 0;
|
|
|
|
while (inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM) {
|
|
interruptible_sleep_on_timeout(&queue, 1);
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_stop():Wait on state machine after stop interrupted\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ex_trig_enable(struct me4000_ai_context *ai_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_ex_trig_enable() is executed\n");
|
|
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_EX_TRIG;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ex_trig_disable(struct me4000_ai_context *ai_context)
|
|
{
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_ex_trig_disable() is executed\n");
|
|
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_EX_TRIG;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_ex_trig_setup(struct me4000_ai_trigger *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
struct me4000_ai_trigger cmd;
|
|
int err;
|
|
u32 tmp;
|
|
unsigned long flags;
|
|
|
|
CALL_PDEBUG("me4000_ai_ex_trig_setup() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_ai_trigger));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_ex_trig_setup():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
if (cmd.mode == ME4000_AI_TRIGGER_EXT_DIGITAL) {
|
|
tmp &= ~ME4000_AI_CTRL_BIT_EX_TRIG_ANALOG;
|
|
} else if (cmd.mode == ME4000_AI_TRIGGER_EXT_ANALOG) {
|
|
if (!ai_context->board_info->board_p->ai.ex_trig_analog) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_ex_trig_setup():No analog trigger available\n");
|
|
return -EINVAL;
|
|
}
|
|
tmp |= ME4000_AI_CTRL_BIT_EX_TRIG_ANALOG;
|
|
} else {
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_ex_trig_setup():Invalid trigger mode specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cmd.edge == ME4000_AI_TRIGGER_EXT_EDGE_RISING) {
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_EX_TRIG_BOTH |
|
|
ME4000_AI_CTRL_BIT_EX_TRIG_FALLING);
|
|
} else if (cmd.edge == ME4000_AI_TRIGGER_EXT_EDGE_FALLING) {
|
|
tmp |= ME4000_AI_CTRL_BIT_EX_TRIG_FALLING;
|
|
tmp &= ~ME4000_AI_CTRL_BIT_EX_TRIG_BOTH;
|
|
} else if (cmd.edge == ME4000_AI_TRIGGER_EXT_EDGE_BOTH) {
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_EX_TRIG_BOTH |
|
|
ME4000_AI_CTRL_BIT_EX_TRIG_FALLING;
|
|
} else {
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_ex_trig_setup():Invalid trigger edge specified\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_sc_setup(struct me4000_ai_sc *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
struct me4000_ai_sc cmd;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_ai_sc_setup() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_ai_sc));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_sc_setup():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
ai_context->sample_counter = cmd.value;
|
|
ai_context->sample_counter_reload = cmd.reload;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t me4000_ai_read(struct file *filep, char *buff, size_t cnt,
|
|
loff_t *offp)
|
|
{
|
|
struct me4000_ai_context *ai_context = filep->private_data;
|
|
s16 *buffer = (s16 *) buff;
|
|
size_t count = cnt / 2;
|
|
unsigned long flags;
|
|
int tmp;
|
|
int c = 0;
|
|
int k = 0;
|
|
int ret = 0;
|
|
wait_queue_t wait;
|
|
|
|
CALL_PDEBUG("me4000_ai_read() is executed\n");
|
|
|
|
init_waitqueue_entry(&wait, current);
|
|
|
|
/* Check count */
|
|
if (count <= 0) {
|
|
PDEBUG("me4000_ai_read():Count is 0\n");
|
|
return 0;
|
|
}
|
|
|
|
while (count > 0) {
|
|
if (filep->f_flags & O_NONBLOCK) {
|
|
c = me4000_values_to_end(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
if (!c) {
|
|
PDEBUG
|
|
("me4000_ai_read():Returning from nonblocking read\n");
|
|
break;
|
|
}
|
|
} else {
|
|
/* Check if conversion is still running */
|
|
if (!
|
|
(me4000_inl(ai_context->status_reg) &
|
|
ME4000_AI_STATUS_BIT_FSM)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_read():Conversion interrupted\n");
|
|
return -EPIPE;
|
|
}
|
|
|
|
wait_event_interruptible(ai_context->wait_queue,
|
|
(me4000_values_to_end
|
|
(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT)));
|
|
if (signal_pending(current)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_read():Wait on values interrupted from signal\n");
|
|
return -EINTR;
|
|
}
|
|
}
|
|
|
|
/* Only read count values or as much as available */
|
|
c = me4000_values_to_end(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
PDEBUG("me4000_ai_read():%d values to end\n", c);
|
|
if (count < c)
|
|
c = count;
|
|
|
|
PDEBUG("me4000_ai_read():Copy %d values to user space\n", c);
|
|
k = 2 * c;
|
|
k -= copy_to_user(buffer,
|
|
ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.tail, k);
|
|
c = k / 2;
|
|
if (!c) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_read():Cannot copy new values to user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
ai_context->circ_buf.tail =
|
|
(ai_context->circ_buf.tail + c) & (ME4000_AI_BUFFER_COUNT -
|
|
1);
|
|
buffer += c;
|
|
count -= c;
|
|
ret += c;
|
|
|
|
spin_lock_irqsave(&ai_context->int_lock, flags);
|
|
if (me4000_buf_space
|
|
(ai_context->circ_buf, ME4000_AI_BUFFER_COUNT)) {
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
/* Determine interrupt setup */
|
|
if (ai_context->sample_counter
|
|
&& !ai_context->sample_counter_reload) {
|
|
/* Enable Half Full Interrupt and Sample Counter Interrupt */
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_HF_IRQ;
|
|
} else if (ai_context->sample_counter
|
|
&& ai_context->sample_counter_reload) {
|
|
if (ai_context->sample_counter <
|
|
ME4000_AI_FIFO_COUNT / 2) {
|
|
/* Enable only Sample Counter Interrupt */
|
|
tmp |= ME4000_AI_CTRL_BIT_SC_IRQ;
|
|
} else {
|
|
/* Enable Half Full Interrupt and Sample Counter Interrupt */
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_SC_IRQ |
|
|
ME4000_AI_CTRL_BIT_HF_IRQ;
|
|
}
|
|
} else {
|
|
/* Enable only Half Full Interrupt */
|
|
tmp |= ME4000_AI_CTRL_BIT_HF_IRQ;
|
|
}
|
|
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
}
|
|
spin_unlock_irqrestore(&ai_context->int_lock, flags);
|
|
}
|
|
|
|
/* Check if conversion is still running */
|
|
if (!(me4000_inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ai_read():Conversion not running after complete read\n");
|
|
return -EPIPE;
|
|
}
|
|
|
|
if (filep->f_flags & O_NONBLOCK)
|
|
return (k == 0) ? -EAGAIN : 2 * ret;
|
|
|
|
CALL_PDEBUG("me4000_ai_read() is leaved\n");
|
|
return ret * 2;
|
|
}
|
|
|
|
static unsigned int me4000_ai_poll(struct file *file_p, poll_table *wait)
|
|
{
|
|
struct me4000_ai_context *ai_context;
|
|
unsigned long mask = 0;
|
|
|
|
CALL_PDEBUG("me4000_ai_poll() is executed\n");
|
|
|
|
ai_context = file_p->private_data;
|
|
|
|
/* Register wait queue */
|
|
poll_wait(file_p, &ai_context->wait_queue, wait);
|
|
|
|
/* Get available values */
|
|
if (me4000_values_to_end(ai_context->circ_buf, ME4000_AI_BUFFER_COUNT))
|
|
mask |= POLLIN | POLLRDNORM;
|
|
|
|
PDEBUG("me4000_ai_poll():Return mask %lX\n", mask);
|
|
|
|
return mask;
|
|
}
|
|
|
|
static int me4000_ai_offset_enable(struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_offset_enable() is executed\n");
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_OFFSET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_offset_disable(struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_offset_disable() is executed\n");
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_OFFSET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_fullscale_enable(struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_fullscale_enable() is executed\n");
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_FULLSCALE;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_fullscale_disable(struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_fullscale_disable() is executed\n");
|
|
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_FULLSCALE;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_fsm_state(int *arg, struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ai_fsm_state() is executed\n");
|
|
|
|
tmp =
|
|
(me4000_inl(ai_context->status_reg) & ME4000_AI_STATUS_BIT_FSM) ? 1
|
|
: 0;
|
|
|
|
if (put_user(tmp, arg)) {
|
|
printk(KERN_ERR "me4000_ai_fsm_state():Cannot copy to user\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ai_get_count_buffer(unsigned long *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
unsigned long c;
|
|
int err;
|
|
|
|
c = me4000_buf_count(ai_context->circ_buf, ME4000_AI_BUFFER_COUNT);
|
|
|
|
err = copy_to_user(arg, &c, sizeof(unsigned long));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"%s:Can't copy to user space\n", __func__);
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*---------------------------------- EEPROM stuff ---------------------------*/
|
|
|
|
static int eeprom_write_cmd(struct me4000_ai_context *ai_context, unsigned long cmd,
|
|
int length)
|
|
{
|
|
int i;
|
|
unsigned long value;
|
|
|
|
CALL_PDEBUG("eeprom_write_cmd() is executed\n");
|
|
|
|
PDEBUG("eeprom_write_cmd():Write command 0x%08lX with length = %d\n",
|
|
cmd, length);
|
|
|
|
/* Get the ICR register and clear the related bits */
|
|
value = me4000_inl(ai_context->board_info->plx_regbase + PLX_ICR);
|
|
value &= ~(PLX_ICR_MASK_EEPROM);
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
|
|
/* Raise the chip select */
|
|
value |= PLX_ICR_BIT_EEPROM_CHIP_SELECT;
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
for (i = 0; i < length; i++) {
|
|
if (cmd & ((0x1 << (length - 1)) >> i))
|
|
value |= PLX_ICR_BIT_EEPROM_WRITE;
|
|
else
|
|
value &= ~PLX_ICR_BIT_EEPROM_WRITE;
|
|
|
|
/* Write to EEPROM */
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Raising edge of the clock */
|
|
value |= PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Falling edge of the clock */
|
|
value &= ~PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
}
|
|
|
|
/* Clear the chip select */
|
|
value &= ~PLX_ICR_BIT_EEPROM_CHIP_SELECT;
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Wait until hardware is ready for sure */
|
|
mdelay(10);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned short eeprom_read_cmd(struct me4000_ai_context *ai_context,
|
|
unsigned long cmd, int length)
|
|
{
|
|
int i;
|
|
unsigned long value;
|
|
unsigned short id = 0;
|
|
|
|
CALL_PDEBUG("eeprom_read_cmd() is executed\n");
|
|
|
|
PDEBUG("eeprom_read_cmd():Read command 0x%08lX with length = %d\n", cmd,
|
|
length);
|
|
|
|
/* Get the ICR register and clear the related bits */
|
|
value = me4000_inl(ai_context->board_info->plx_regbase + PLX_ICR);
|
|
value &= ~(PLX_ICR_MASK_EEPROM);
|
|
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
|
|
/* Raise the chip select */
|
|
value |= PLX_ICR_BIT_EEPROM_CHIP_SELECT;
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Write the read command to the eeprom */
|
|
for (i = 0; i < length; i++) {
|
|
if (cmd & ((0x1 << (length - 1)) >> i))
|
|
value |= PLX_ICR_BIT_EEPROM_WRITE;
|
|
else
|
|
value &= ~PLX_ICR_BIT_EEPROM_WRITE;
|
|
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Raising edge of the clock */
|
|
value |= PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
/* Falling edge of the clock */
|
|
value &= ~PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
}
|
|
|
|
/* Read the value from the eeprom */
|
|
for (i = 0; i < 16; i++) {
|
|
/* Raising edge of the clock */
|
|
value |= PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
if (me4000_inl(ai_context->board_info->plx_regbase + PLX_ICR) &
|
|
PLX_ICR_BIT_EEPROM_READ) {
|
|
id |= (0x8000 >> i);
|
|
PDEBUG("eeprom_read_cmd():OR with 0x%04X\n",
|
|
(0x8000 >> i));
|
|
} else {
|
|
PDEBUG("eeprom_read_cmd():Dont't OR\n");
|
|
}
|
|
|
|
/* Falling edge of the clock */
|
|
value &= ~PLX_ICR_BIT_EEPROM_CLOCK_SET;
|
|
me4000_outl(value,
|
|
ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
}
|
|
|
|
/* Clear the chip select */
|
|
value &= ~PLX_ICR_BIT_EEPROM_CHIP_SELECT;
|
|
me4000_outl(value, ai_context->board_info->plx_regbase + PLX_ICR);
|
|
udelay(EEPROM_DELAY);
|
|
|
|
return id;
|
|
}
|
|
|
|
static int me4000_eeprom_write(struct me4000_eeprom *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
int err;
|
|
struct me4000_eeprom setup;
|
|
unsigned long cmd;
|
|
unsigned long date_high;
|
|
unsigned long date_low;
|
|
|
|
CALL_PDEBUG("me4000_eeprom_write() is executed\n");
|
|
|
|
err = copy_from_user(&setup, arg, sizeof(setup));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_eeprom_write():Cannot copy from user\n");
|
|
return err;
|
|
}
|
|
|
|
/* Enable writing */
|
|
eeprom_write_cmd(ai_context, ME4000_EEPROM_CMD_WRITE_ENABLE,
|
|
ME4000_EEPROM_CMD_LENGTH_WRITE_ENABLE);
|
|
|
|
/* Command for date */
|
|
date_high = (setup.date & 0xFFFF0000) >> 16;
|
|
date_low = (setup.date & 0x0000FFFF);
|
|
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_DATE_HIGH <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
date_high);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_DATE_LOW <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
date_low);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for unipolar 10V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_UNI_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
uni_10_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for unipolar 10V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_UNI_FULLSCALE <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
uni_10_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for unipolar 2,5V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_UNI_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
uni_2_5_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for unipolar 2,5V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_UNI_FULLSCALE <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
uni_2_5_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for bipolar 10V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_BI_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
bi_10_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for bipolar 10V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_BI_FULLSCALE <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
bi_10_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for bipolar 2,5V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_BI_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
bi_2_5_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for bipolar 2,5V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_BI_FULLSCALE <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
bi_2_5_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for differential 10V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_DIFF_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
diff_10_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for differential 10V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_1_DIFF_FULLSCALE
|
|
<< ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
diff_10_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for differential 2,5V offset */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_DIFF_OFFSET <<
|
|
ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
diff_2_5_offset);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Command for differential 2,5V fullscale */
|
|
cmd =
|
|
ME4000_EEPROM_CMD_WRITE | (ME4000_EEPROM_ADR_GAIN_4_DIFF_FULLSCALE
|
|
<< ME4000_EEPROM_DATA_LENGTH) | (0xFFFF &
|
|
(unsigned
|
|
long)
|
|
setup.
|
|
diff_2_5_fullscale);
|
|
err = eeprom_write_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_WRITE);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Disable writing */
|
|
eeprom_write_cmd(ai_context, ME4000_EEPROM_CMD_WRITE_DISABLE,
|
|
ME4000_EEPROM_CMD_LENGTH_WRITE_DISABLE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_eeprom_read(struct me4000_eeprom *arg,
|
|
struct me4000_ai_context *ai_context)
|
|
{
|
|
int err;
|
|
unsigned long cmd;
|
|
struct me4000_eeprom setup;
|
|
|
|
CALL_PDEBUG("me4000_eeprom_read() is executed\n");
|
|
|
|
/* Command for date */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_DATE_HIGH;
|
|
setup.date =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
setup.date <<= 16;
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_DATE_LOW;
|
|
setup.date |=
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for unipolar 10V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_UNI_OFFSET;
|
|
setup.uni_10_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for unipolar 10V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_UNI_FULLSCALE;
|
|
setup.uni_10_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for unipolar 2,5V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_UNI_OFFSET;
|
|
setup.uni_2_5_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for unipolar 2,5V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_UNI_FULLSCALE;
|
|
setup.uni_2_5_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for bipolar 10V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_BI_OFFSET;
|
|
setup.bi_10_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for bipolar 10V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_BI_FULLSCALE;
|
|
setup.bi_10_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for bipolar 2,5V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_BI_OFFSET;
|
|
setup.bi_2_5_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for bipolar 2,5V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_BI_FULLSCALE;
|
|
setup.bi_2_5_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for differntial 10V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_DIFF_OFFSET;
|
|
setup.diff_10_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for differential 10V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_1_DIFF_FULLSCALE;
|
|
setup.diff_10_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for differntial 2,5V offset */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_DIFF_OFFSET;
|
|
setup.diff_2_5_offset =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
/* Command for differential 2,5V fullscale */
|
|
cmd = ME4000_EEPROM_CMD_READ | ME4000_EEPROM_ADR_GAIN_4_DIFF_FULLSCALE;
|
|
setup.diff_2_5_fullscale =
|
|
eeprom_read_cmd(ai_context, cmd, ME4000_EEPROM_CMD_LENGTH_READ);
|
|
|
|
err = copy_to_user(arg, &setup, sizeof(setup));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_eeprom_read():Cannot copy to user\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------------ DIO stuff ----------------------------------------------*/
|
|
|
|
static int me4000_dio_ioctl(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_dio_context *dio_context;
|
|
|
|
CALL_PDEBUG("me4000_dio_ioctl() is executed\n");
|
|
|
|
dio_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_dio_ioctl():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR "me4000_dio_ioctl():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_DIO_CONFIG:
|
|
return me4000_dio_config((struct me4000_dio_config *)arg,
|
|
dio_context);
|
|
case ME4000_DIO_SET_BYTE:
|
|
return me4000_dio_set_byte((struct me4000_dio_byte *)arg,
|
|
dio_context);
|
|
case ME4000_DIO_GET_BYTE:
|
|
return me4000_dio_get_byte((struct me4000_dio_byte *)arg,
|
|
dio_context);
|
|
case ME4000_DIO_RESET:
|
|
return me4000_dio_reset(dio_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_ioctl():Invalid service number %d\n",
|
|
service);
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_dio_config(struct me4000_dio_config *arg,
|
|
struct me4000_dio_context *dio_context)
|
|
{
|
|
struct me4000_dio_config cmd;
|
|
u32 tmp;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_dio_config() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_dio_config));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Check port parameter */
|
|
if (cmd.port >= dio_context->dio_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
PDEBUG("me4000_dio_config(): port %d, mode %d, function %d\n", cmd.port,
|
|
cmd.mode, cmd.function);
|
|
|
|
if (cmd.port == ME4000_DIO_PORT_A) {
|
|
if (cmd.mode == ME4000_DIO_PORT_INPUT) {
|
|
/* Check if opto isolated version */
|
|
if (!(me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Cannot set to input on opto isolated versions\n");
|
|
return -EIO;
|
|
}
|
|
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_0 |
|
|
ME4000_DIO_CTRL_BIT_MODE_1);
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_PORT_OUTPUT) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_0 |
|
|
ME4000_DIO_CTRL_BIT_MODE_1);
|
|
tmp |= ME4000_DIO_CTRL_BIT_MODE_0;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_LOW) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_0 |
|
|
ME4000_DIO_CTRL_BIT_MODE_1 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_0);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_0 |
|
|
ME4000_DIO_CTRL_BIT_MODE_1;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_HIGH) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_0 |
|
|
ME4000_DIO_CTRL_BIT_MODE_1 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_0;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Mode %d is not available\n",
|
|
cmd.mode);
|
|
return -EINVAL;
|
|
}
|
|
} else if (cmd.port == ME4000_DIO_PORT_B) {
|
|
if (cmd.mode == ME4000_DIO_PORT_INPUT) {
|
|
/* Only do anything when TTL version is installed */
|
|
if ((me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_2 |
|
|
ME4000_DIO_CTRL_BIT_MODE_3);
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
}
|
|
} else if (cmd.mode == ME4000_DIO_PORT_OUTPUT) {
|
|
/* Check if opto isolated version */
|
|
if (!(me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Cannot set to output on opto isolated versions\n");
|
|
return -EIO;
|
|
}
|
|
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_2 |
|
|
ME4000_DIO_CTRL_BIT_MODE_3);
|
|
tmp |= ME4000_DIO_CTRL_BIT_MODE_2;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_LOW) {
|
|
/* Check if opto isolated version */
|
|
if (!(me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Cannot set to FIFO low output on opto isolated versions\n");
|
|
return -EIO;
|
|
}
|
|
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_2 |
|
|
ME4000_DIO_CTRL_BIT_MODE_3 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_1);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_2 |
|
|
ME4000_DIO_CTRL_BIT_MODE_3;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_HIGH) {
|
|
/* Check if opto isolated version */
|
|
if (!(me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Cannot set to FIFO high output on opto isolated versions\n");
|
|
return -EIO;
|
|
}
|
|
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_2 |
|
|
ME4000_DIO_CTRL_BIT_MODE_3 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_1;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Mode %d is not available\n",
|
|
cmd.mode);
|
|
return -EINVAL;
|
|
}
|
|
} else if (cmd.port == ME4000_DIO_PORT_C) {
|
|
if (cmd.mode == ME4000_DIO_PORT_INPUT) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_4 |
|
|
ME4000_DIO_CTRL_BIT_MODE_5);
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_PORT_OUTPUT) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_4 |
|
|
ME4000_DIO_CTRL_BIT_MODE_5);
|
|
tmp |= ME4000_DIO_CTRL_BIT_MODE_4;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_LOW) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_4 |
|
|
ME4000_DIO_CTRL_BIT_MODE_5 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_2);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_4 |
|
|
ME4000_DIO_CTRL_BIT_MODE_5;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_HIGH) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_4 |
|
|
ME4000_DIO_CTRL_BIT_MODE_5 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_2;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Mode %d is not available\n",
|
|
cmd.mode);
|
|
return -EINVAL;
|
|
}
|
|
} else if (cmd.port == ME4000_DIO_PORT_D) {
|
|
if (cmd.mode == ME4000_DIO_PORT_INPUT) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_6 |
|
|
ME4000_DIO_CTRL_BIT_MODE_7);
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_PORT_OUTPUT) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_6 |
|
|
ME4000_DIO_CTRL_BIT_MODE_7);
|
|
tmp |= ME4000_DIO_CTRL_BIT_MODE_6;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_LOW) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_MODE_6 |
|
|
ME4000_DIO_CTRL_BIT_MODE_7 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_3);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_6 |
|
|
ME4000_DIO_CTRL_BIT_MODE_7;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.mode == ME4000_DIO_FIFO_HIGH) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_DIO_CTRL_BIT_MODE_6 |
|
|
ME4000_DIO_CTRL_BIT_MODE_7 |
|
|
ME4000_DIO_CTRL_BIT_FIFO_HIGH_3;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Mode %d is not available\n",
|
|
cmd.mode);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
PDEBUG("me4000_dio_config(): port %d, mode %d, function %d\n", cmd.port,
|
|
cmd.mode, cmd.function);
|
|
|
|
if ((cmd.mode == ME4000_DIO_FIFO_HIGH)
|
|
|| (cmd.mode == ME4000_DIO_FIFO_LOW)) {
|
|
tmp = me4000_inl(dio_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_DIO_CTRL_BIT_FUNCTION_0 |
|
|
ME4000_DIO_CTRL_BIT_FUNCTION_1);
|
|
if (cmd.function == ME4000_DIO_FUNCTION_PATTERN) {
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.function == ME4000_DIO_FUNCTION_DEMUX) {
|
|
tmp |= ME4000_DIO_CTRL_BIT_FUNCTION_0;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else if (cmd.function == ME4000_DIO_FUNCTION_MUX) {
|
|
tmp |= ME4000_DIO_CTRL_BIT_FUNCTION_1;
|
|
me4000_outl(tmp, dio_context->ctrl_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_config():Invalid port function specified\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_dio_set_byte(struct me4000_dio_byte *arg,
|
|
struct me4000_dio_context *dio_context)
|
|
{
|
|
struct me4000_dio_byte cmd;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_dio_set_byte() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_dio_byte));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Check port parameter */
|
|
if (cmd.port >= dio_context->dio_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cmd.port == ME4000_DIO_PORT_A) {
|
|
if ((me4000_inl(dio_context->ctrl_reg) & 0x3) != 0x1) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not in output mode\n",
|
|
cmd.port);
|
|
return -EIO;
|
|
}
|
|
me4000_outl(cmd.byte, dio_context->port_0_reg);
|
|
} else if (cmd.port == ME4000_DIO_PORT_B) {
|
|
if ((me4000_inl(dio_context->ctrl_reg) & 0xC) != 0x4) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not in output mode\n",
|
|
cmd.port);
|
|
return -EIO;
|
|
}
|
|
me4000_outl(cmd.byte, dio_context->port_1_reg);
|
|
} else if (cmd.port == ME4000_DIO_PORT_C) {
|
|
if ((me4000_inl(dio_context->ctrl_reg) & 0x30) != 0x10) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not in output mode\n",
|
|
cmd.port);
|
|
return -EIO;
|
|
}
|
|
me4000_outl(cmd.byte, dio_context->port_2_reg);
|
|
} else if (cmd.port == ME4000_DIO_PORT_D) {
|
|
if ((me4000_inl(dio_context->ctrl_reg) & 0xC0) != 0x40) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not in output mode\n",
|
|
cmd.port);
|
|
return -EIO;
|
|
}
|
|
me4000_outl(cmd.byte, dio_context->port_3_reg);
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_set_byte():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_dio_get_byte(struct me4000_dio_byte *arg,
|
|
struct me4000_dio_context *dio_context)
|
|
{
|
|
struct me4000_dio_byte cmd;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_dio_get_byte() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_dio_byte));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_get_byte():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Check port parameter */
|
|
if (cmd.port >= dio_context->dio_count) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_get_byte():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cmd.port == ME4000_DIO_PORT_A) {
|
|
cmd.byte = me4000_inl(dio_context->port_0_reg) & 0xFF;
|
|
} else if (cmd.port == ME4000_DIO_PORT_B) {
|
|
cmd.byte = me4000_inl(dio_context->port_1_reg) & 0xFF;
|
|
} else if (cmd.port == ME4000_DIO_PORT_C) {
|
|
cmd.byte = me4000_inl(dio_context->port_2_reg) & 0xFF;
|
|
} else if (cmd.port == ME4000_DIO_PORT_D) {
|
|
cmd.byte = me4000_inl(dio_context->port_3_reg) & 0xFF;
|
|
} else {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_get_byte():Port %d is not available\n",
|
|
cmd.port);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Copy result back to user */
|
|
err = copy_to_user(arg, &cmd, sizeof(struct me4000_dio_byte));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_get_byte():Can't copy to user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_dio_reset(struct me4000_dio_context *dio_context)
|
|
{
|
|
CALL_PDEBUG("me4000_dio_reset() is executed\n");
|
|
|
|
/* Clear the control register */
|
|
me4000_outl(0, dio_context->ctrl_reg);
|
|
|
|
/* Check for opto isolated version */
|
|
if (!(me4000_inl(dio_context->dir_reg) & 0x1)) {
|
|
me4000_outl(0x1, dio_context->ctrl_reg);
|
|
me4000_outl(0x0, dio_context->port_0_reg);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------------ COUNTER STUFF ------------------------------------*/
|
|
|
|
static int me4000_cnt_ioctl(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_cnt_context *cnt_context;
|
|
|
|
CALL_PDEBUG("me4000_cnt_ioctl() is executed\n");
|
|
|
|
cnt_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_dio_ioctl():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR "me4000_dio_ioctl():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_CNT_READ:
|
|
return me4000_cnt_read((struct me4000_cnt *)arg, cnt_context);
|
|
case ME4000_CNT_WRITE:
|
|
return me4000_cnt_write((struct me4000_cnt *)arg, cnt_context);
|
|
case ME4000_CNT_CONFIG:
|
|
return me4000_cnt_config((struct me4000_cnt_config *)arg,
|
|
cnt_context);
|
|
case ME4000_CNT_RESET:
|
|
return me4000_cnt_reset(cnt_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_dio_ioctl():Invalid service number %d\n",
|
|
service);
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_cnt_config(struct me4000_cnt_config *arg,
|
|
struct me4000_cnt_context *cnt_context)
|
|
{
|
|
struct me4000_cnt_config cmd;
|
|
u8 counter;
|
|
u8 mode;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_cnt_config() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_cnt_config));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_config():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Check counter parameter */
|
|
switch (cmd.counter) {
|
|
case ME4000_CNT_COUNTER_0:
|
|
counter = ME4000_CNT_CTRL_BIT_COUNTER_0;
|
|
break;
|
|
case ME4000_CNT_COUNTER_1:
|
|
counter = ME4000_CNT_CTRL_BIT_COUNTER_1;
|
|
break;
|
|
case ME4000_CNT_COUNTER_2:
|
|
counter = ME4000_CNT_CTRL_BIT_COUNTER_2;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_config():Counter %d is not available\n",
|
|
cmd.counter);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check mode parameter */
|
|
switch (cmd.mode) {
|
|
case ME4000_CNT_MODE_0:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_0;
|
|
break;
|
|
case ME4000_CNT_MODE_1:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_1;
|
|
break;
|
|
case ME4000_CNT_MODE_2:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_2;
|
|
break;
|
|
case ME4000_CNT_MODE_3:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_3;
|
|
break;
|
|
case ME4000_CNT_MODE_4:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_4;
|
|
break;
|
|
case ME4000_CNT_MODE_5:
|
|
mode = ME4000_CNT_CTRL_BIT_MODE_5;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_config():Mode %d is not available\n",
|
|
cmd.mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Write the control word */
|
|
me4000_outb((counter | mode | 0x30), cnt_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_cnt_read(struct me4000_cnt *arg,
|
|
struct me4000_cnt_context *cnt_context)
|
|
{
|
|
struct me4000_cnt cmd;
|
|
u8 tmp;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_cnt_read() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_cnt));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_read():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Read counter */
|
|
switch (cmd.counter) {
|
|
case ME4000_CNT_COUNTER_0:
|
|
tmp = me4000_inb(cnt_context->counter_0_reg);
|
|
cmd.value = tmp;
|
|
tmp = me4000_inb(cnt_context->counter_0_reg);
|
|
cmd.value |= ((u16) tmp) << 8;
|
|
break;
|
|
case ME4000_CNT_COUNTER_1:
|
|
tmp = me4000_inb(cnt_context->counter_1_reg);
|
|
cmd.value = tmp;
|
|
tmp = me4000_inb(cnt_context->counter_1_reg);
|
|
cmd.value |= ((u16) tmp) << 8;
|
|
break;
|
|
case ME4000_CNT_COUNTER_2:
|
|
tmp = me4000_inb(cnt_context->counter_2_reg);
|
|
cmd.value = tmp;
|
|
tmp = me4000_inb(cnt_context->counter_2_reg);
|
|
cmd.value |= ((u16) tmp) << 8;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_read():Counter %d is not available\n",
|
|
cmd.counter);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Copy result back to user */
|
|
err = copy_to_user(arg, &cmd, sizeof(struct me4000_cnt));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_read():Can't copy to user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_cnt_write(struct me4000_cnt *arg,
|
|
struct me4000_cnt_context *cnt_context)
|
|
{
|
|
struct me4000_cnt cmd;
|
|
u8 tmp;
|
|
int err;
|
|
|
|
CALL_PDEBUG("me4000_cnt_write() is executed\n");
|
|
|
|
/* Copy data from user */
|
|
err = copy_from_user(&cmd, arg, sizeof(struct me4000_cnt));
|
|
if (err) {
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_write():Can't copy from user space\n");
|
|
return -EFAULT;
|
|
}
|
|
|
|
/* Write counter */
|
|
switch (cmd.counter) {
|
|
case ME4000_CNT_COUNTER_0:
|
|
tmp = cmd.value & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_0_reg);
|
|
tmp = (cmd.value >> 8) & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_0_reg);
|
|
break;
|
|
case ME4000_CNT_COUNTER_1:
|
|
tmp = cmd.value & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_1_reg);
|
|
tmp = (cmd.value >> 8) & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_1_reg);
|
|
break;
|
|
case ME4000_CNT_COUNTER_2:
|
|
tmp = cmd.value & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_2_reg);
|
|
tmp = (cmd.value >> 8) & 0xFF;
|
|
me4000_outb(tmp, cnt_context->counter_2_reg);
|
|
break;
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_cnt_write():Counter %d is not available\n",
|
|
cmd.counter);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_cnt_reset(struct me4000_cnt_context *cnt_context)
|
|
{
|
|
CALL_PDEBUG("me4000_cnt_reset() is executed\n");
|
|
|
|
/* Set the mode and value for counter 0 */
|
|
me4000_outb(0x30, cnt_context->ctrl_reg);
|
|
me4000_outb(0x00, cnt_context->counter_0_reg);
|
|
me4000_outb(0x00, cnt_context->counter_0_reg);
|
|
|
|
/* Set the mode and value for counter 1 */
|
|
me4000_outb(0x70, cnt_context->ctrl_reg);
|
|
me4000_outb(0x00, cnt_context->counter_1_reg);
|
|
me4000_outb(0x00, cnt_context->counter_1_reg);
|
|
|
|
/* Set the mode and value for counter 2 */
|
|
me4000_outb(0xB0, cnt_context->ctrl_reg);
|
|
me4000_outb(0x00, cnt_context->counter_2_reg);
|
|
me4000_outb(0x00, cnt_context->counter_2_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------------ External Interrupt stuff ------------------------------------*/
|
|
|
|
static int me4000_ext_int_ioctl(struct inode *inode_p, struct file *file_p,
|
|
unsigned int service, unsigned long arg)
|
|
{
|
|
struct me4000_ext_int_context *ext_int_context;
|
|
|
|
CALL_PDEBUG("me4000_ext_int_ioctl() is executed\n");
|
|
|
|
ext_int_context = file_p->private_data;
|
|
|
|
if (_IOC_TYPE(service) != ME4000_MAGIC) {
|
|
printk(KERN_ERR "me4000_ext_int_ioctl():Wrong magic number\n");
|
|
return -ENOTTY;
|
|
}
|
|
if (_IOC_NR(service) > ME4000_IOCTL_MAXNR) {
|
|
printk(KERN_ERR
|
|
"me4000_ext_int_ioctl():Service number to high\n");
|
|
return -ENOTTY;
|
|
}
|
|
|
|
switch (service) {
|
|
case ME4000_EXT_INT_ENABLE:
|
|
return me4000_ext_int_enable(ext_int_context);
|
|
case ME4000_EXT_INT_DISABLE:
|
|
return me4000_ext_int_disable(ext_int_context);
|
|
case ME4000_EXT_INT_COUNT:
|
|
return me4000_ext_int_count((unsigned long *)arg,
|
|
ext_int_context);
|
|
default:
|
|
printk(KERN_ERR
|
|
"ME4000:me4000_ext_int_ioctl():Invalid service number %d\n",
|
|
service);
|
|
return -ENOTTY;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ext_int_enable(struct me4000_ext_int_context *ext_int_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ext_int_enable() is executed\n");
|
|
|
|
tmp = me4000_inl(ext_int_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_EX_IRQ;
|
|
me4000_outl(tmp, ext_int_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ext_int_disable(struct me4000_ext_int_context *ext_int_context)
|
|
{
|
|
unsigned long tmp;
|
|
|
|
CALL_PDEBUG("me4000_ext_int_disable() is executed\n");
|
|
|
|
tmp = me4000_inl(ext_int_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_EX_IRQ;
|
|
me4000_outl(tmp, ext_int_context->ctrl_reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int me4000_ext_int_count(unsigned long *arg,
|
|
struct me4000_ext_int_context *ext_int_context)
|
|
{
|
|
|
|
CALL_PDEBUG("me4000_ext_int_count() is executed\n");
|
|
|
|
put_user(ext_int_context->int_count, arg);
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------------ General stuff ------------------------------------*/
|
|
|
|
static int me4000_get_user_info(struct me4000_user_info *arg,
|
|
struct me4000_info *board_info)
|
|
{
|
|
struct me4000_user_info user_info;
|
|
|
|
CALL_PDEBUG("me4000_get_user_info() is executed\n");
|
|
|
|
user_info.board_count = board_info->board_count;
|
|
user_info.plx_regbase = board_info->plx_regbase;
|
|
user_info.plx_regbase_size = board_info->plx_regbase_size;
|
|
user_info.me4000_regbase = board_info->me4000_regbase;
|
|
user_info.me4000_regbase_size = board_info->me4000_regbase_size;
|
|
user_info.serial_no = board_info->serial_no;
|
|
user_info.hw_revision = board_info->hw_revision;
|
|
user_info.vendor_id = board_info->vendor_id;
|
|
user_info.device_id = board_info->device_id;
|
|
user_info.pci_bus_no = board_info->pci_bus_no;
|
|
user_info.pci_dev_no = board_info->pci_dev_no;
|
|
user_info.pci_func_no = board_info->pci_func_no;
|
|
user_info.irq = board_info->irq;
|
|
user_info.irq_count = board_info->irq_count;
|
|
user_info.driver_version = ME4000_DRIVER_VERSION;
|
|
user_info.ao_count = board_info->board_p->ao.count;
|
|
user_info.ao_fifo_count = board_info->board_p->ao.fifo_count;
|
|
|
|
user_info.ai_count = board_info->board_p->ai.count;
|
|
user_info.ai_sh_count = board_info->board_p->ai.sh_count;
|
|
user_info.ai_ex_trig_analog = board_info->board_p->ai.ex_trig_analog;
|
|
|
|
user_info.dio_count = board_info->board_p->dio.count;
|
|
|
|
user_info.cnt_count = board_info->board_p->cnt.count;
|
|
|
|
if (copy_to_user(arg, &user_info, sizeof(struct me4000_user_info)))
|
|
return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*------------------------------------ ISR STUFF ------------------------------------*/
|
|
|
|
static int me4000_ext_int_fasync(int fd, struct file *file_ptr, int mode)
|
|
{
|
|
int result = 0;
|
|
struct me4000_ext_int_context *ext_int_context;
|
|
|
|
CALL_PDEBUG("me4000_ext_int_fasync() is executed\n");
|
|
|
|
ext_int_context = file_ptr->private_data;
|
|
|
|
result =
|
|
fasync_helper(fd, file_ptr, mode, &ext_int_context->fasync_ptr);
|
|
|
|
CALL_PDEBUG("me4000_ext_int_fasync() is leaved\n");
|
|
return result;
|
|
}
|
|
|
|
static irqreturn_t me4000_ao_isr(int irq, void *dev_id)
|
|
{
|
|
u32 tmp;
|
|
u32 value;
|
|
struct me4000_ao_context *ao_context;
|
|
int i;
|
|
int c = 0;
|
|
int c1 = 0;
|
|
|
|
ISR_PDEBUG("me4000_ao_isr() is executed\n");
|
|
|
|
ao_context = dev_id;
|
|
|
|
/* Check if irq number is right */
|
|
if (irq != ao_context->irq) {
|
|
ISR_PDEBUG("me4000_ao_isr():incorrect interrupt num: %d\n",
|
|
irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* Check if this DAC rised an interrupt */
|
|
if (!
|
|
((0x1 << (ao_context->index + 3)) &
|
|
me4000_inl(ao_context->irq_status_reg))) {
|
|
ISR_PDEBUG("me4000_ao_isr():Not this DAC\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/* Read status register to find out what happened */
|
|
tmp = me4000_inl(ao_context->status_reg);
|
|
|
|
if (!(tmp & ME4000_AO_STATUS_BIT_EF) && (tmp & ME4000_AO_STATUS_BIT_HF)
|
|
&& (tmp & ME4000_AO_STATUS_BIT_HF)) {
|
|
c = ME4000_AO_FIFO_COUNT;
|
|
ISR_PDEBUG("me4000_ao_isr():Fifo empty\n");
|
|
} else if ((tmp & ME4000_AO_STATUS_BIT_EF)
|
|
&& (tmp & ME4000_AO_STATUS_BIT_HF)
|
|
&& (tmp & ME4000_AO_STATUS_BIT_HF)) {
|
|
c = ME4000_AO_FIFO_COUNT / 2;
|
|
ISR_PDEBUG("me4000_ao_isr():Fifo under half full\n");
|
|
} else {
|
|
c = 0;
|
|
ISR_PDEBUG("me4000_ao_isr():Fifo full\n");
|
|
}
|
|
|
|
ISR_PDEBUG("me4000_ao_isr():Try to write 0x%04X values\n", c);
|
|
|
|
while (1) {
|
|
c1 = me4000_values_to_end(ao_context->circ_buf,
|
|
ME4000_AO_BUFFER_COUNT);
|
|
ISR_PDEBUG("me4000_ao_isr():Values to end = %d\n", c1);
|
|
if (c1 > c)
|
|
c1 = c;
|
|
|
|
if (c1 <= 0) {
|
|
ISR_PDEBUG
|
|
("me4000_ao_isr():Work done or buffer empty\n");
|
|
break;
|
|
}
|
|
if (((ao_context->fifo_reg & 0xFF) == ME4000_AO_01_FIFO_REG) ||
|
|
((ao_context->fifo_reg & 0xFF) == ME4000_AO_03_FIFO_REG)) {
|
|
for (i = 0; i < c1; i++) {
|
|
value =
|
|
((u32)
|
|
(*
|
|
(ao_context->circ_buf.buf +
|
|
ao_context->circ_buf.tail + i))) << 16;
|
|
outl(value, ao_context->fifo_reg);
|
|
}
|
|
} else
|
|
outsw(ao_context->fifo_reg,
|
|
ao_context->circ_buf.buf +
|
|
ao_context->circ_buf.tail, c1);
|
|
|
|
|
|
ao_context->circ_buf.tail =
|
|
(ao_context->circ_buf.tail + c1) & (ME4000_AO_BUFFER_COUNT -
|
|
1);
|
|
ISR_PDEBUG("me4000_ao_isr():%d values wrote to port 0x%04X\n",
|
|
c1, ao_context->fifo_reg);
|
|
c -= c1;
|
|
}
|
|
|
|
/* If there are no values left in the buffer, disable interrupts */
|
|
spin_lock(&ao_context->int_lock);
|
|
if (!me4000_buf_count(ao_context->circ_buf, ME4000_AO_BUFFER_COUNT)) {
|
|
ISR_PDEBUG
|
|
("me4000_ao_isr():Disable Interrupt because no values left in buffer\n");
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp &= ~ME4000_AO_CTRL_BIT_ENABLE_IRQ;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
}
|
|
spin_unlock(&ao_context->int_lock);
|
|
|
|
/* Reset the interrupt */
|
|
spin_lock(&ao_context->int_lock);
|
|
tmp = me4000_inl(ao_context->ctrl_reg);
|
|
tmp |= ME4000_AO_CTRL_BIT_RESET_IRQ;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
tmp &= ~ME4000_AO_CTRL_BIT_RESET_IRQ;
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
|
|
/* If state machine is stopped, flow was interrupted */
|
|
if (!(me4000_inl(ao_context->status_reg) & ME4000_AO_STATUS_BIT_FSM)) {
|
|
printk(KERN_ERR "ME4000:me4000_ao_isr():Broken pipe\n");
|
|
/* Set flag in order to inform write routine */
|
|
ao_context->pipe_flag = 1;
|
|
/* Disable interrupt */
|
|
tmp &= ~ME4000_AO_CTRL_BIT_ENABLE_IRQ;
|
|
}
|
|
me4000_outl(tmp, ao_context->ctrl_reg);
|
|
spin_unlock(&ao_context->int_lock);
|
|
|
|
/* Wake up waiting process */
|
|
wake_up_interruptible(&(ao_context->wait_queue));
|
|
|
|
/* Count the interrupt */
|
|
ao_context->board_info->irq_count++;
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t me4000_ai_isr(int irq, void *dev_id)
|
|
{
|
|
u32 tmp;
|
|
struct me4000_ai_context *ai_context;
|
|
int i;
|
|
int c = 0;
|
|
int c1 = 0;
|
|
#ifdef ME4000_ISR_DEBUG
|
|
unsigned long before;
|
|
unsigned long after;
|
|
#endif
|
|
|
|
ISR_PDEBUG("me4000_ai_isr() is executed\n");
|
|
|
|
#ifdef ME4000_ISR_DEBUG
|
|
rdtscl(before);
|
|
#endif
|
|
|
|
ai_context = dev_id;
|
|
|
|
/* Check if irq number is right */
|
|
if (irq != ai_context->irq) {
|
|
ISR_PDEBUG("me4000_ai_isr():incorrect interrupt num: %d\n",
|
|
irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (me4000_inl(ai_context->irq_status_reg) &
|
|
ME4000_IRQ_STATUS_BIT_AI_HF) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Fifo half full interrupt occured\n");
|
|
|
|
/* Read status register to find out what happened */
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
if (!(tmp & ME4000_AI_STATUS_BIT_FF_DATA) &&
|
|
!(tmp & ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG("me4000_ai_isr():Fifo full\n");
|
|
c = ME4000_AI_FIFO_COUNT;
|
|
|
|
/* FIFO overflow, so stop conversion and disable all interrupts */
|
|
spin_lock(&ai_context->int_lock);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_HF_IRQ |
|
|
ME4000_AI_CTRL_BIT_SC_IRQ);
|
|
outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock(&ai_context->int_lock);
|
|
} else if ((tmp & ME4000_AI_STATUS_BIT_FF_DATA) &&
|
|
!(tmp & ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG("me4000_ai_isr():Fifo half full\n");
|
|
c = ME4000_AI_FIFO_COUNT / 2;
|
|
} else {
|
|
c = 0;
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Can't determine state of fifo\n");
|
|
}
|
|
|
|
ISR_PDEBUG("me4000_ai_isr():Try to read %d values\n", c);
|
|
|
|
while (1) {
|
|
c1 = me4000_space_to_end(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
ISR_PDEBUG("me4000_ai_isr():Space to end = %d\n", c1);
|
|
if (c1 > c)
|
|
c1 = c;
|
|
|
|
if (c1 <= 0) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Work done or buffer full\n");
|
|
break;
|
|
}
|
|
|
|
insw(ai_context->data_reg,
|
|
ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.head, c1);
|
|
ai_context->circ_buf.head =
|
|
(ai_context->circ_buf.head +
|
|
c1) & (ME4000_AI_BUFFER_COUNT - 1);
|
|
c -= c1;
|
|
}
|
|
|
|
/* Work is done, so reset the interrupt */
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():reset interrupt fifo half full interrupt\n");
|
|
spin_lock(&ai_context->int_lock);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_HF_IRQ_RESET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_HF_IRQ_RESET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock(&ai_context->int_lock);
|
|
}
|
|
|
|
if (me4000_inl(ai_context->irq_status_reg) & ME4000_IRQ_STATUS_BIT_SC) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Sample counter interrupt occured\n");
|
|
|
|
if (!ai_context->sample_counter_reload) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Single data block available\n");
|
|
|
|
/* Poll data until fifo empty */
|
|
for (i = 0;
|
|
(i < ME4000_AI_FIFO_COUNT / 2)
|
|
&& (inl(ai_context->ctrl_reg) &
|
|
ME4000_AI_STATUS_BIT_EF_DATA); i++) {
|
|
if (me4000_space_to_end
|
|
(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT)) {
|
|
*(ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.head) =
|
|
inw(ai_context->data_reg);
|
|
ai_context->circ_buf.head =
|
|
(ai_context->circ_buf.head +
|
|
1) & (ME4000_AI_BUFFER_COUNT - 1);
|
|
} else
|
|
break;
|
|
}
|
|
ISR_PDEBUG("me4000_ai_isr():%d values read\n", i);
|
|
} else {
|
|
if (ai_context->sample_counter <=
|
|
ME4000_AI_FIFO_COUNT / 2) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Interrupt from adjustable half full threshold\n");
|
|
|
|
/* Read status register to find out what happened */
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
if (!(tmp & ME4000_AI_STATUS_BIT_FF_DATA) &&
|
|
!(tmp & ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Fifo full\n");
|
|
c = ME4000_AI_FIFO_COUNT;
|
|
|
|
/* FIFO overflow, so stop conversion */
|
|
spin_lock(&ai_context->int_lock);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
|
|
outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock(&ai_context->int_lock);
|
|
} else if ((tmp & ME4000_AI_STATUS_BIT_FF_DATA)
|
|
&& !(tmp &
|
|
ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp &
|
|
ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Fifo half full\n");
|
|
c = ME4000_AI_FIFO_COUNT / 2;
|
|
} else {
|
|
c = ai_context->sample_counter;
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Sample count values\n");
|
|
}
|
|
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Try to read %d values\n",
|
|
c);
|
|
|
|
while (1) {
|
|
c1 = me4000_space_to_end(ai_context->
|
|
circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Space to end = %d\n",
|
|
c1);
|
|
if (c1 > c)
|
|
c1 = c;
|
|
|
|
if (c1 <= 0) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Work done or buffer full\n");
|
|
break;
|
|
}
|
|
|
|
insw(ai_context->data_reg,
|
|
ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.head, c1);
|
|
ai_context->circ_buf.head =
|
|
(ai_context->circ_buf.head +
|
|
c1) & (ME4000_AI_BUFFER_COUNT - 1);
|
|
c -= c1;
|
|
}
|
|
} else {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Multiple data block available\n");
|
|
|
|
/* Read status register to find out what happened */
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
|
|
if (!(tmp & ME4000_AI_STATUS_BIT_FF_DATA) &&
|
|
!(tmp & ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Fifo full\n");
|
|
c = ME4000_AI_FIFO_COUNT;
|
|
|
|
/* FIFO overflow, so stop conversion */
|
|
spin_lock(&ai_context->int_lock);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |=
|
|
ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
|
|
outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock(&ai_context->int_lock);
|
|
|
|
while (1) {
|
|
c1 = me4000_space_to_end
|
|
(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Space to end = %d\n",
|
|
c1);
|
|
if (c1 > c)
|
|
c1 = c;
|
|
|
|
if (c1 <= 0) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Work done or buffer full\n");
|
|
break;
|
|
}
|
|
|
|
insw(ai_context->data_reg,
|
|
ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.head,
|
|
c1);
|
|
ai_context->circ_buf.head =
|
|
(ai_context->circ_buf.head +
|
|
c1) &
|
|
(ME4000_AI_BUFFER_COUNT -
|
|
1);
|
|
c -= c1;
|
|
}
|
|
} else if ((tmp & ME4000_AI_STATUS_BIT_FF_DATA)
|
|
&& !(tmp &
|
|
ME4000_AI_STATUS_BIT_HF_DATA)
|
|
&& (tmp &
|
|
ME4000_AI_STATUS_BIT_EF_DATA)) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Fifo half full\n");
|
|
c = ME4000_AI_FIFO_COUNT / 2;
|
|
|
|
while (1) {
|
|
c1 = me4000_space_to_end
|
|
(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT);
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Space to end = %d\n",
|
|
c1);
|
|
if (c1 > c)
|
|
c1 = c;
|
|
|
|
if (c1 <= 0) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Work done or buffer full\n");
|
|
break;
|
|
}
|
|
|
|
insw(ai_context->data_reg,
|
|
ai_context->circ_buf.buf +
|
|
ai_context->circ_buf.head,
|
|
c1);
|
|
ai_context->circ_buf.head =
|
|
(ai_context->circ_buf.head +
|
|
c1) &
|
|
(ME4000_AI_BUFFER_COUNT -
|
|
1);
|
|
c -= c1;
|
|
}
|
|
} else {
|
|
/* Poll data until fifo empty */
|
|
for (i = 0;
|
|
(i < ME4000_AI_FIFO_COUNT / 2)
|
|
&& (inl(ai_context->ctrl_reg) &
|
|
ME4000_AI_STATUS_BIT_EF_DATA);
|
|
i++) {
|
|
if (me4000_space_to_end
|
|
(ai_context->circ_buf,
|
|
ME4000_AI_BUFFER_COUNT)) {
|
|
*(ai_context->circ_buf.
|
|
buf +
|
|
ai_context->circ_buf.
|
|
head) =
|
|
inw(ai_context->data_reg);
|
|
ai_context->circ_buf.
|
|
head =
|
|
(ai_context->
|
|
circ_buf.head +
|
|
1) &
|
|
(ME4000_AI_BUFFER_COUNT
|
|
- 1);
|
|
} else
|
|
break;
|
|
}
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():%d values read\n",
|
|
i);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Work is done, so reset the interrupt */
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():reset interrupt from sample counter\n");
|
|
spin_lock(&ai_context->int_lock);
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_SC_IRQ_RESET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_SC_IRQ_RESET;
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
spin_unlock(&ai_context->int_lock);
|
|
}
|
|
|
|
/* Values are now available, so wake up waiting process */
|
|
if (me4000_buf_count(ai_context->circ_buf, ME4000_AI_BUFFER_COUNT)) {
|
|
ISR_PDEBUG("me4000_ai_isr():Wake up waiting process\n");
|
|
wake_up_interruptible(&(ai_context->wait_queue));
|
|
}
|
|
|
|
/* If there is no space left in the buffer, disable interrupts */
|
|
spin_lock(&ai_context->int_lock);
|
|
if (!me4000_buf_space(ai_context->circ_buf, ME4000_AI_BUFFER_COUNT)) {
|
|
ISR_PDEBUG
|
|
("me4000_ai_isr():Disable Interrupt because no space left in buffer\n");
|
|
tmp = me4000_inl(ai_context->ctrl_reg);
|
|
tmp &=
|
|
~(ME4000_AI_CTRL_BIT_SC_IRQ | ME4000_AI_CTRL_BIT_HF_IRQ |
|
|
ME4000_AI_CTRL_BIT_LE_IRQ);
|
|
me4000_outl(tmp, ai_context->ctrl_reg);
|
|
}
|
|
spin_unlock(&ai_context->int_lock);
|
|
|
|
#ifdef ME4000_ISR_DEBUG
|
|
rdtscl(after);
|
|
printk(KERN_ERR "ME4000:me4000_ai_isr():Time lapse = %lu\n",
|
|
after - before);
|
|
#endif
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t me4000_ext_int_isr(int irq, void *dev_id)
|
|
{
|
|
struct me4000_ext_int_context *ext_int_context;
|
|
unsigned long tmp;
|
|
|
|
ISR_PDEBUG("me4000_ext_int_isr() is executed\n");
|
|
|
|
ext_int_context = dev_id;
|
|
|
|
/* Check if irq number is right */
|
|
if (irq != ext_int_context->irq) {
|
|
ISR_PDEBUG("me4000_ext_int_isr():incorrect interrupt num: %d\n",
|
|
irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (me4000_inl(ext_int_context->irq_status_reg) &
|
|
ME4000_IRQ_STATUS_BIT_EX) {
|
|
ISR_PDEBUG("me4000_ext_int_isr():External interrupt occured\n");
|
|
tmp = me4000_inl(ext_int_context->ctrl_reg);
|
|
tmp |= ME4000_AI_CTRL_BIT_EX_IRQ_RESET;
|
|
me4000_outl(tmp, ext_int_context->ctrl_reg);
|
|
tmp &= ~ME4000_AI_CTRL_BIT_EX_IRQ_RESET;
|
|
me4000_outl(tmp, ext_int_context->ctrl_reg);
|
|
|
|
ext_int_context->int_count++;
|
|
|
|
if (ext_int_context->fasync_ptr) {
|
|
ISR_PDEBUG
|
|
("me2600_ext_int_isr():Send signal to process\n");
|
|
kill_fasync(&ext_int_context->fasync_ptr, SIGIO,
|
|
POLL_IN);
|
|
}
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void __exit me4000_module_exit(void)
|
|
{
|
|
struct me4000_info *board_info;
|
|
|
|
CALL_PDEBUG("cleanup_module() is executed\n");
|
|
|
|
unregister_chrdev(me4000_ext_int_major_driver_no, ME4000_EXT_INT_NAME);
|
|
|
|
unregister_chrdev(me4000_cnt_major_driver_no, ME4000_CNT_NAME);
|
|
|
|
unregister_chrdev(me4000_dio_major_driver_no, ME4000_DIO_NAME);
|
|
|
|
unregister_chrdev(me4000_ai_major_driver_no, ME4000_AI_NAME);
|
|
|
|
unregister_chrdev(me4000_ao_major_driver_no, ME4000_AO_NAME);
|
|
|
|
remove_proc_entry("me4000", NULL);
|
|
|
|
pci_unregister_driver(&me4000_driver);
|
|
|
|
/* Reset the boards */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
me4000_reset_board(board_info);
|
|
}
|
|
|
|
clear_board_info_list();
|
|
}
|
|
|
|
module_exit(me4000_module_exit);
|
|
|
|
static int me4000_read_procmem(char *buf, char **start, off_t offset, int count,
|
|
int *eof, void *data)
|
|
{
|
|
int len = 0;
|
|
int limit = count - 1000;
|
|
struct me4000_info *board_info;
|
|
|
|
len += sprintf(buf + len, "\nME4000 DRIVER VERSION %X.%X.%X\n\n",
|
|
(ME4000_DRIVER_VERSION & 0xFF0000) >> 16,
|
|
(ME4000_DRIVER_VERSION & 0xFF00) >> 8,
|
|
(ME4000_DRIVER_VERSION & 0xFF));
|
|
|
|
/* Search for the board context */
|
|
list_for_each_entry(board_info, &me4000_board_info_list, list) {
|
|
len +=
|
|
sprintf(buf + len, "Board number %d:\n",
|
|
board_info->board_count);
|
|
len += sprintf(buf + len, "---------------\n");
|
|
len +=
|
|
sprintf(buf + len, "PLX base register = 0x%lX\n",
|
|
board_info->plx_regbase);
|
|
len +=
|
|
sprintf(buf + len, "PLX base register size = 0x%X\n",
|
|
(unsigned int)board_info->plx_regbase_size);
|
|
len +=
|
|
sprintf(buf + len, "ME4000 base register = 0x%X\n",
|
|
(unsigned int)board_info->me4000_regbase);
|
|
len +=
|
|
sprintf(buf + len, "ME4000 base register size = 0x%X\n",
|
|
(unsigned int)board_info->me4000_regbase_size);
|
|
len +=
|
|
sprintf(buf + len, "Serial number = 0x%X\n",
|
|
board_info->serial_no);
|
|
len +=
|
|
sprintf(buf + len, "Hardware revision = 0x%X\n",
|
|
board_info->hw_revision);
|
|
len +=
|
|
sprintf(buf + len, "Vendor id = 0x%X\n",
|
|
board_info->vendor_id);
|
|
len +=
|
|
sprintf(buf + len, "Device id = 0x%X\n",
|
|
board_info->device_id);
|
|
len +=
|
|
sprintf(buf + len, "PCI bus number = %d\n",
|
|
board_info->pci_bus_no);
|
|
len +=
|
|
sprintf(buf + len, "PCI device number = %d\n",
|
|
board_info->pci_dev_no);
|
|
len +=
|
|
sprintf(buf + len, "PCI function number = %d\n",
|
|
board_info->pci_func_no);
|
|
len += sprintf(buf + len, "IRQ = %u\n", board_info->irq);
|
|
len +=
|
|
sprintf(buf + len,
|
|
"Count of interrupts since module was loaded = %d\n",
|
|
board_info->irq_count);
|
|
|
|
len +=
|
|
sprintf(buf + len, "Count of analog outputs = %d\n",
|
|
board_info->board_p->ao.count);
|
|
len +=
|
|
sprintf(buf + len, "Count of analog output fifos = %d\n",
|
|
board_info->board_p->ao.fifo_count);
|
|
|
|
len +=
|
|
sprintf(buf + len, "Count of analog inputs = %d\n",
|
|
board_info->board_p->ai.count);
|
|
len +=
|
|
sprintf(buf + len,
|
|
"Count of sample and hold devices for analog input = %d\n",
|
|
board_info->board_p->ai.sh_count);
|
|
len +=
|
|
sprintf(buf + len,
|
|
"Analog external trigger available for analog input = %d\n",
|
|
board_info->board_p->ai.ex_trig_analog);
|
|
|
|
len +=
|
|
sprintf(buf + len, "Count of digital ports = %d\n",
|
|
board_info->board_p->dio.count);
|
|
|
|
len +=
|
|
sprintf(buf + len, "Count of counter devices = %d\n",
|
|
board_info->board_p->cnt.count);
|
|
len +=
|
|
sprintf(buf + len, "AI control register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AI_CTRL_REG));
|
|
|
|
len += sprintf(buf + len, "AO 0 control register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_00_CTRL_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 0 status register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_00_STATUS_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 1 control register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_01_CTRL_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 1 status register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_01_STATUS_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 2 control register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_02_CTRL_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 2 status register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_02_STATUS_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 3 control register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_03_CTRL_REG));
|
|
len +=
|
|
sprintf(buf + len, "AO 3 status register = 0x%08X\n",
|
|
inl(board_info->me4000_regbase +
|
|
ME4000_AO_03_STATUS_REG));
|
|
if (len >= limit)
|
|
break;
|
|
}
|
|
|
|
*eof = 1;
|
|
return len;
|
|
}
|