/*
* libieee1284 - IEEE 1284 library
* Copyright (C) 2001, 2002 Tim Waugh <twaugh@redhat.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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#if !(defined __MINGW32__ || defined _MSC_VER)
#include <sys/ioctl.h>
#else
#include <io.h> /* lseek(), read(), write(), open(), close() */
#include <sys/timeb.h>
#define O_NOCTTY 0
#endif
#include <sys/stat.h>
#ifndef _MSC_VER
#include <sys/time.h>
#endif
#include <sys/types.h>
#ifdef __unix__
#include <unistd.h>
#endif
#include "access.h"
#include "debug.h"
#include "default.h"
#include "delay.h"
#include "ieee1284.h"
#include "detect.h"
#include "parport.h"
#include "ppdev.h"
#ifdef HAVE_LINUX
#ifdef HAVE_SYS_IO_H
#include <sys/io.h>
#endif
#elif defined(HAVE_SOLARIS)
#define IOPREAD 1
#define IOPWRITE 2
struct iopbuf {
unsigned int port;
unsigned char port_value;
};
#elif defined(HAVE_CYGWIN_9X)
#include "io.h"
#elif defined(HAVE_FBSD_I386)
/* don't use machine/cpufunc.h here because it redefines inb and outb as
macros, which breaks our port->fn->inb calls */
#include "io.h"
#elif defined(HAVE_OBSD_I386)
#include "io.h"
/* for i386_get_ioperm and i386_set_ioperm */
#include <machine/sysarch.h>
/*
OpenBSD makes us modify our own bitmap, so this is copied from Linux
kernel-source-2.4.18/arch/i386/kernel/ioport.c
Set EXTENT bits starting at BASE in BITMAP to new_value.
0 = allowed
1 = denied
*/
static void
set_bitmap(unsigned long *bitmap, short base, short extent, int new_value)
{
int mask;
unsigned long *bitmap_base = bitmap + (base >> 5);
unsigned short low_index = base & 0x1f;
int length = low_index + extent;
if (low_index != 0) {
mask = (~0 << low_index);
if (length < 32)
mask &= ~(~0 << length);
if (new_value)
*bitmap_base++ |= mask;
else
*bitmap_base++ &= ~mask;
length -= 32;
}
mask = (new_value ? ~0 : 0);
while (length >= 32) {
*bitmap_base++ = mask;
length -= 32;
}
if (length > 0) {
mask = ~(~0 << length);
if (new_value)
*bitmap_base++ |= mask;
else
*bitmap_base++ &= ~mask;
}
}
#endif
static unsigned char
raw_inb (struct parport_internal *port, unsigned long addr)
{
#if (defined(HAVE_LINUX) && defined(HAVE_SYS_IO_H)) || defined(HAVE_CYGWIN_9X) \
|| defined(HAVE_OBSD_I386) || defined(HAVE_FBSD_I386)
return inb ((unsigned short)addr);
#elif defined(HAVE_SOLARIS)
struct iopbuf tmpbuf;
tmpbuf.port = addr;
if(ioctl(port->fd, IOPREAD, &tmpbuf))
debugprintf("IOP IOCTL failed on read\n");
return tmpbuf.port_value;
#else
return E1284_SYS; /* might not be the best error code to use */
#endif
}
static void
raw_outb (struct parport_internal *port, unsigned char val, unsigned long addr)
{
#if (defined(HAVE_LINUX) && defined(HAVE_SYS_IO_H)) || defined(HAVE_CYGWIN_9X) \
|| defined(HAVE_OBSD_I386) || defined(HAVE_FBSD_I386)
#if defined(__i386__) || defined(__x86_64__) || defined(_MSC_VER)
outb_p (val, (unsigned short)addr);
#else
outb (val, addr);
#endif
#elif defined(HAVE_SOLARIS)
struct iopbuf tmpbuf;
tmpbuf.port = addr;
tmpbuf.port_value = val;
if(ioctl(port->fd, IOPWRITE, &tmpbuf))
debugprintf("IOP IOCTL failed on write\n");
#endif
}
static unsigned char
port_inb (struct parport_internal *port, unsigned long addr)
{
unsigned char byte = 0xff;
if (lseek (port->fd, addr, SEEK_SET) != (off_t)-1)
read (port->fd, &byte, 1);
return byte;
}
static void
port_outb (struct parport_internal *port, unsigned char val,
unsigned long addr)
{
if (lseek (port->fd, addr, SEEK_SET) != (off_t)-1)
write (port->fd, &val, 1);
}
static int
init (struct parport *pport, int flags, int *capabilities)
{
struct parport_internal *port = pport->priv;
#ifdef HAVE_SOLARIS
struct iopbuf tmpbuf;
#elif defined(HAVE_OBSD_I386)
u_long *iomap;
#endif
if (flags)
return E1284_NOTAVAIL;
/* TODO: To support F1284_EXCL here we need to open the relevant
* /dev/lp device. */
switch (port->type)
{
case IO_CAPABLE:
#ifdef HAVE_LINUX
#ifdef HAVE_SYS_IO_H
if (ioperm (port->base, 3, 1) || ioperm (0x80, 1, 1))
return E1284_INIT;
#else
return E1284_SYS; /* might not be the best error code to use */
#endif /* HAVE_SYS_IO_H */
#elif defined(HAVE_FBSD_I386)
/* open the special io device which does the ioperm change for us */
if ((port->fd = open("/dev/io", O_RDONLY)) < 0)
{
debugprintf("Open on /dev/io failed\n");
return E1284_INIT;
}
#elif defined(HAVE_OBSD_I386)
if ((iomap = malloc(1024 / 8)) == NULL)
return E1284_NOMEM;
if (i386_get_ioperm(iomap))
{
free(iomap);
return E1284_INIT;
}
/* set access on port 80 and ports base...base+3 */
set_bitmap(iomap, port->base, 3, 0);
set_bitmap(iomap, 0x80, 1, 0);
if (i386_set_ioperm(iomap))
{
free(iomap);
return E1284_INIT;
}
free(iomap);
#elif defined(HAVE_SOLARIS)
if((port->fd=open("/devices/pseudo/iop@0:iop", O_RDWR)) < 0)
{
debugprintf("IOP Device open failed\n");
return E1284_INIT;
} else {
tmpbuf.port = 0x80;
tmpbuf.port_value = 0xFF;
if(ioctl(port->fd, IOPREAD, &tmpbuf))
{
debugprintf("IOP IOCTL failed on read\n");
return E1284_INIT;
}
}
#endif
break;
case DEV_PORT_CAPABLE:
port->fd = open ("/dev/port", O_RDWR | O_NOCTTY);
if (port->fd < 0)
return E1284_INIT;
port->fn->do_inb = port_inb;
port->fn->do_outb = port_outb;
break;
}
if (capabilities)
*capabilities |= CAP1284_RAW;
/* Need to write this.
* If we find an ECP port, we can adjust some of the access function
* pointers in io_access_functions to point to functions that use
* hardware assistance. */
return E1284_OK;
}
static void
cleanup (struct parport_internal *port)
{
if (port->type != IO_CAPABLE && port->fd >= 0)
close (port->fd);
#if defined(HAVE_FBSD_I386) || defined (HAVE_SOLARIS)
if (port->fd >= 0)
close(port->fd);
#endif
}
static int
read_data (struct parport_internal *port)
{
return port->fn->do_inb (port, port->base);
}
static void
write_data (struct parport_internal *port, unsigned char reg)
{
port->fn->do_outb (port, reg, port->base);
}
static int
read_status (struct parport_internal *port)
{
return debug_display_status ((unsigned char)
(port->fn->do_inb (port, port->base + 1) ^ S1284_INVERTED));
}
static void
raw_frob_control (struct parport_internal *port,
unsigned char mask,
unsigned char val)
{
unsigned char ctr = port->ctr;
/* Deal with inversion issues. */
val ^= mask & C1284_INVERTED;
ctr = (ctr & ~mask) ^ val;
port->fn->do_outb (port, ctr, port->base + 2);
port->ctr = ctr;
debug_frob_control (mask, val);
}
static int
read_control (struct parport_internal *port)
{
const unsigned char rm = (C1284_NSTROBE |
C1284_NAUTOFD |
C1284_NINIT |
C1284_NSELECTIN);
return (port->ctr ^ C1284_INVERTED) & rm;
}
static int
data_dir (struct parport_internal *port, int reverse)
{
raw_frob_control (port, 0x20, (unsigned char)(reverse ? 0x20 : 0x00));
return E1284_OK;
}
static void
write_control (struct parport_internal *port, unsigned char reg)
{
const unsigned char wm = (C1284_NSTROBE |
C1284_NAUTOFD |
C1284_NINIT |
C1284_NSELECTIN);
if (reg & 0x20)
{
printf ("use ieee1284_data_dir to change data line direction!\n");
data_dir (port, 1);
}
raw_frob_control (port, wm, (unsigned char)(reg & wm));
}
static void
frob_control (struct parport_internal *port,
unsigned char mask,
unsigned char val)
{
const unsigned char wm = (C1284_NSTROBE |
C1284_NAUTOFD |
C1284_NINIT |
C1284_NSELECTIN);
if (mask & 0x20)
{
printf ("use ieee1284_data_dir to change data line direction!\n");
data_dir (port, val & 0x20);
}
mask &= wm;
val &= wm;
raw_frob_control (port, mask, val);
}
static int
wait_status (struct parport_internal *port,
unsigned char mask, unsigned char val,
struct timeval *timeout)
{
/* Simple-minded polling. TODO: Use David Paschal's method for this. */
#if !(defined __MINGW32__ || defined _MSC_VER)
struct timeval deadline, now;
gettimeofday (&deadline, NULL);
deadline.tv_sec += timeout->tv_sec;
deadline.tv_usec += timeout->tv_usec;
deadline.tv_sec += deadline.tv_usec / 1000000;
deadline.tv_usec %= 1000000;
#else
struct timeb tb;
int deadline, now;
ftime (&tb);
deadline = tb.time * 1000 + tb.millitm +
timeout->tv_sec * 1000 + timeout->tv_usec / 1000;
#endif
do
{
if ((debug_display_status ((unsigned char)(read_status (port))) & mask) == val)
return E1284_OK;
delay (IO_POLL_DELAY);
#if !(defined __MINGW32__ || defined _MSC_VER)
gettimeofday (&now, NULL);
}
while (now.tv_sec < deadline.tv_sec ||
(now.tv_sec == deadline.tv_sec &&
now.tv_usec < deadline.tv_usec));
#else
ftime (&tb);
now = tb.time * 1000 + tb.millitm;
}
while (now < deadline);
#endif
return E1284_TIMEDOUT;
}
const struct parport_access_methods io_access_methods =
{
init,
cleanup,
NULL, /* claim */
NULL, /* release */
raw_inb,
raw_outb,
NULL, /* get_irq_fd */
NULL, /* clear_irq */
read_data,
write_data,
default_wait_data,
data_dir,
read_status,
wait_status,
read_control,
write_control,
frob_control,
default_do_nack_handshake,
default_negotiate,
default_terminate,
default_ecp_fwd_to_rev,
default_ecp_rev_to_fwd,
default_nibble_read,
default_compat_write,
default_byte_read,
default_epp_read_data,
default_epp_write_data,
default_epp_read_addr,
default_epp_write_addr,
default_ecp_read_data,
default_ecp_write_data,
default_ecp_read_addr,
default_ecp_write_addr,
default_set_timeout
};
/*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/