/*
* Copyright 2003 Digi International (www.digi.com)
* Scott H Kilau <Scott_Kilau at digi dot com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
*
* This is shared code between Digi's CVS archive and the
* Linux Kernel sources.
* Changing the source just for reformatting needlessly breaks
* our CVS diff history.
*
* Send any bug fixes/changes to: Eng.Linux at digi dot com.
* Thank you.
*
*/
/************************************************************************
*
* This file implements the mgmt functionality for the
* Neo and ClassicBoard based product lines.
*
************************************************************************
*/
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/sched.h> /* For jiffies, task states */
#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
#include <linux/serial_reg.h>
#include <linux/termios.h>
#include <linux/uaccess.h> /* For copy_from_user/copy_to_user */
#include "dgnc_driver.h"
#include "dgnc_pci.h"
#include "dgnc_kcompat.h" /* Kernel 2.4/2.6 compat includes */
#include "dgnc_mgmt.h"
#include "dpacompat.h"
/* Our "in use" variables, to enforce 1 open only */
static int dgnc_mgmt_in_use[MAXMGMTDEVICES];
/*
* dgnc_mgmt_open()
*
* Open the mgmt/downld/dpa device
*/
int dgnc_mgmt_open(struct inode *inode, struct file *file)
{
unsigned long lock_flags;
unsigned int minor = iminor(inode);
DGNC_LOCK(dgnc_global_lock, lock_flags);
/* mgmt device */
if (minor < MAXMGMTDEVICES) {
/* Only allow 1 open at a time on mgmt device */
if (dgnc_mgmt_in_use[minor]) {
DGNC_UNLOCK(dgnc_global_lock, lock_flags);
return -EBUSY;
}
dgnc_mgmt_in_use[minor]++;
} else {
DGNC_UNLOCK(dgnc_global_lock, lock_flags);
return -ENXIO;
}
DGNC_UNLOCK(dgnc_global_lock, lock_flags);
return 0;
}
/*
* dgnc_mgmt_close()
*
* Open the mgmt/dpa device
*/
int dgnc_mgmt_close(struct inode *inode, struct file *file)
{
unsigned long lock_flags;
unsigned int minor = iminor(inode);
DGNC_LOCK(dgnc_global_lock, lock_flags);
/* mgmt device */
if (minor < MAXMGMTDEVICES) {
if (dgnc_mgmt_in_use[minor])
dgnc_mgmt_in_use[minor] = 0;
}
DGNC_UNLOCK(dgnc_global_lock, lock_flags);
return 0;
}
/*
* dgnc_mgmt_ioctl()
*
* ioctl the mgmt/dpa device
*/
long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
unsigned long lock_flags;
void __user *uarg = (void __user *) arg;
switch (cmd) {
case DIGI_GETDD:
{
/*
* This returns the total number of boards
* in the system, as well as driver version
* and has space for a reserved entry
*/
struct digi_dinfo ddi;
DGNC_LOCK(dgnc_global_lock, lock_flags);
ddi.dinfo_nboards = dgnc_NumBoards;
sprintf(ddi.dinfo_version, "%s", DG_PART);
DGNC_UNLOCK(dgnc_global_lock, lock_flags);
if (copy_to_user(uarg, &ddi, sizeof(ddi)))
return -EFAULT;
break;
}
case DIGI_GETBD:
{
int brd;
struct digi_info di;
if (copy_from_user(&brd, uarg, sizeof(int)))
return -EFAULT;
if ((brd < 0) || (brd > dgnc_NumBoards) ||
(dgnc_NumBoards == 0))
return -ENODEV;
memset(&di, 0, sizeof(di));
di.info_bdnum = brd;
DGNC_LOCK(dgnc_Board[brd]->bd_lock, lock_flags);
di.info_bdtype = dgnc_Board[brd]->dpatype;
di.info_bdstate = dgnc_Board[brd]->dpastatus;
di.info_ioport = 0;
di.info_physaddr = (ulong) dgnc_Board[brd]->membase;
di.info_physsize = (ulong) dgnc_Board[brd]->membase - dgnc_Board[brd]->membase_end;
if (dgnc_Board[brd]->state != BOARD_FAILED)
di.info_nports = dgnc_Board[brd]->nasync;
else
di.info_nports = 0;
DGNC_UNLOCK(dgnc_Board[brd]->bd_lock, lock_flags);
if (copy_to_user(uarg, &di, sizeof(di)))
return -EFAULT;
break;
}
case DIGI_GET_NI_INFO:
{
struct channel_t *ch;
struct ni_info ni;
uchar mstat = 0;
uint board = 0;
uint channel = 0;
if (copy_from_user(&ni, uarg, sizeof(ni)))
return -EFAULT;
board = ni.board;
channel = ni.channel;
/* Verify boundaries on board */
if ((board > dgnc_NumBoards) || (dgnc_NumBoards == 0))
return -ENODEV;
/* Verify boundaries on channel */
if ((channel < 0) || (channel > dgnc_Board[board]->nasync))
return -ENODEV;
ch = dgnc_Board[board]->channels[channel];
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
return -ENODEV;
memset(&ni, 0, sizeof(ni));
ni.board = board;
ni.channel = channel;
DGNC_LOCK(ch->ch_lock, lock_flags);
mstat = (ch->ch_mostat | ch->ch_mistat);
if (mstat & UART_MCR_DTR) {
ni.mstat |= TIOCM_DTR;
ni.dtr = TIOCM_DTR;
}
if (mstat & UART_MCR_RTS) {
ni.mstat |= TIOCM_RTS;
ni.rts = TIOCM_RTS;
}
if (mstat & UART_MSR_CTS) {
ni.mstat |= TIOCM_CTS;
ni.cts = TIOCM_CTS;
}
if (mstat & UART_MSR_RI) {
ni.mstat |= TIOCM_RI;
ni.ri = TIOCM_RI;
}
if (mstat & UART_MSR_DCD) {
ni.mstat |= TIOCM_CD;
ni.dcd = TIOCM_CD;
}
if (mstat & UART_MSR_DSR)
ni.mstat |= TIOCM_DSR;
ni.iflag = ch->ch_c_iflag;
ni.oflag = ch->ch_c_oflag;
ni.cflag = ch->ch_c_cflag;
ni.lflag = ch->ch_c_lflag;
if (ch->ch_digi.digi_flags & CTSPACE ||
ch->ch_c_cflag & CRTSCTS)
ni.hflow = 1;
else
ni.hflow = 0;
if ((ch->ch_flags & CH_STOPI) ||
(ch->ch_flags & CH_FORCED_STOPI))
ni.recv_stopped = 1;
else
ni.recv_stopped = 0;
if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_FORCED_STOP))
ni.xmit_stopped = 1;
else
ni.xmit_stopped = 0;
ni.curtx = ch->ch_txcount;
ni.currx = ch->ch_rxcount;
ni.baud = ch->ch_old_baud;
DGNC_UNLOCK(ch->ch_lock, lock_flags);
if (copy_to_user(uarg, &ni, sizeof(ni)))
return -EFAULT;
break;
}
}
return 0;
}
