low level host parallel port access
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1611 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
2122c51a9c
commit
e57a8c0eef
@ -8,6 +8,7 @@ version 0.7.3:
|
||||
- ES1370 PCI audio device (malc)
|
||||
- Initial USB support
|
||||
- Linux host serial port access
|
||||
- Linux host low level parallel port access
|
||||
|
||||
version 0.7.2:
|
||||
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
/*
|
||||
* QEMU Parallel PORT emulation
|
||||
*
|
||||
* Copyright (c) 2003-2004 Fabrice Bellard
|
||||
* Copyright (c) 2003-2005 Fabrice Bellard
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
@ -50,6 +50,7 @@ struct ParallelState {
|
||||
int irq;
|
||||
int irq_pending;
|
||||
CharDriverState *chr;
|
||||
int hw_driver;
|
||||
};
|
||||
|
||||
static void parallel_update_irq(ParallelState *s)
|
||||
@ -70,10 +71,19 @@ static void parallel_ioport_write(void *opaque, uint32_t addr, uint32_t val)
|
||||
#endif
|
||||
switch(addr) {
|
||||
case 0:
|
||||
if (s->hw_driver) {
|
||||
s->data = val;
|
||||
qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_DATA, &s->data);
|
||||
} else {
|
||||
s->data = val;
|
||||
parallel_update_irq(s);
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
if (s->hw_driver) {
|
||||
s->control = val;
|
||||
qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_CONTROL, &s->control);
|
||||
} else {
|
||||
if ((val & PARA_CTR_INIT) == 0 ) {
|
||||
s->status = PARA_STS_BUSY;
|
||||
s->status |= PARA_STS_ACK;
|
||||
@ -93,6 +103,7 @@ static void parallel_ioport_write(void *opaque, uint32_t addr, uint32_t val)
|
||||
}
|
||||
parallel_update_irq(s);
|
||||
s->control = val;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -105,9 +116,16 @@ static uint32_t parallel_ioport_read(void *opaque, uint32_t addr)
|
||||
addr &= 7;
|
||||
switch(addr) {
|
||||
case 0:
|
||||
if (s->hw_driver) {
|
||||
qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_DATA, &s->data);
|
||||
}
|
||||
ret = s->data;
|
||||
break;
|
||||
case 1:
|
||||
if (s->hw_driver) {
|
||||
qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &s->status);
|
||||
ret = s->status;
|
||||
} else {
|
||||
ret = s->status;
|
||||
s->irq_pending = 0;
|
||||
if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) {
|
||||
@ -121,8 +139,12 @@ static uint32_t parallel_ioport_read(void *opaque, uint32_t addr)
|
||||
}
|
||||
}
|
||||
parallel_update_irq(s);
|
||||
}
|
||||
break;
|
||||
case 2:
|
||||
if (s->hw_driver) {
|
||||
qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_CONTROL, &s->control);
|
||||
}
|
||||
ret = s->control;
|
||||
break;
|
||||
}
|
||||
@ -153,18 +175,20 @@ static void parallel_receive1(void *opaque, const uint8_t *buf, int size)
|
||||
parallel_receive_byte(s, buf[0]);
|
||||
}
|
||||
|
||||
static void parallel_event(void *opaque, int event)
|
||||
{
|
||||
}
|
||||
|
||||
/* If fd is zero, it means that the parallel device uses the console */
|
||||
ParallelState *parallel_init(int base, int irq, CharDriverState *chr)
|
||||
{
|
||||
ParallelState *s;
|
||||
uint8_t dummy;
|
||||
|
||||
s = qemu_mallocz(sizeof(ParallelState));
|
||||
if (!s)
|
||||
return NULL;
|
||||
s->chr = chr;
|
||||
s->hw_driver = 0;
|
||||
if (qemu_chr_ioctl(chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0)
|
||||
s->hw_driver = 1;
|
||||
|
||||
s->irq = irq;
|
||||
s->data = 0;
|
||||
s->status = PARA_STS_BUSY;
|
||||
@ -176,8 +200,6 @@ ParallelState *parallel_init(int base, int irq, CharDriverState *chr)
|
||||
|
||||
register_ioport_write(base, 8, 1, parallel_ioport_write, s);
|
||||
register_ioport_read(base, 8, 1, parallel_ioport_read, s);
|
||||
s->chr = chr;
|
||||
qemu_chr_add_read_handler(chr, parallel_can_receive1, parallel_receive1, s);
|
||||
qemu_chr_add_event_handler(chr, parallel_event);
|
||||
return s;
|
||||
}
|
||||
|
||||
@ -366,6 +366,9 @@ void device
|
||||
@item /dev/XXX
|
||||
[Linux only] Use host tty, e.g. @file{/dev/ttyS0}. The host serial port
|
||||
parameters are set according to the emulated ones.
|
||||
@item /dev/parportN
|
||||
[Linux only, parallel port only] Use host parallel port
|
||||
@var{N}. Currently only SPP parallel port features can be used.
|
||||
@item file:filename
|
||||
Write output to filename. No character can be read.
|
||||
@item stdio
|
||||
@ -379,6 +382,15 @@ non graphical mode.
|
||||
This option can be used several times to simulate up to 4 serials
|
||||
ports.
|
||||
|
||||
@item -parallel dev
|
||||
Redirect the virtual parallel port to host device @var{dev} (same
|
||||
devices as the serial port). On Linux hosts, @file{/dev/parportN} can
|
||||
be used to use hardware devices connected on the corresponding host
|
||||
parallel port.
|
||||
|
||||
This option can be used several times to simulate up to 3 parallel
|
||||
ports.
|
||||
|
||||
@item -monitor dev
|
||||
Redirect the monitor to host device @var{dev} (same devices as the
|
||||
serial port).
|
||||
|
||||
119
vl.c
119
vl.c
@ -51,6 +51,7 @@
|
||||
#include <pty.h>
|
||||
#include <malloc.h>
|
||||
#include <linux/rtc.h>
|
||||
#include <linux/ppdev.h>
|
||||
#endif
|
||||
#endif
|
||||
|
||||
@ -1013,21 +1014,13 @@ int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
|
||||
return s->chr_write(s, buf, len);
|
||||
}
|
||||
|
||||
void qemu_chr_set_serial_parameters(CharDriverState *s,
|
||||
int speed, int parity,
|
||||
int data_bits, int stop_bits)
|
||||
int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
|
||||
{
|
||||
if (s->chr_set_serial_parameters)
|
||||
s->chr_set_serial_parameters(s, speed, parity, data_bits, stop_bits);
|
||||
if (!s->chr_ioctl)
|
||||
return -ENOTSUP;
|
||||
return s->chr_ioctl(s, cmd, arg);
|
||||
}
|
||||
|
||||
void qemu_chr_set_serial_break(CharDriverState *s, int enable)
|
||||
{
|
||||
if (s->chr_set_serial_break)
|
||||
s->chr_set_serial_break(s, enable);
|
||||
}
|
||||
|
||||
|
||||
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
|
||||
{
|
||||
char buf[4096];
|
||||
@ -1379,7 +1372,11 @@ static void tty_serial_init(int fd, int speed,
|
||||
struct termios tty;
|
||||
speed_t spd;
|
||||
|
||||
tcgetattr (0, &tty);
|
||||
#if 0
|
||||
printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
|
||||
speed, parity, data_bits, stop_bits);
|
||||
#endif
|
||||
tcgetattr (fd, &tty);
|
||||
|
||||
switch(speed) {
|
||||
case 50:
|
||||
@ -1459,28 +1456,37 @@ static void tty_serial_init(int fd, int speed,
|
||||
tcsetattr (fd, TCSANOW, &tty);
|
||||
}
|
||||
|
||||
static void tty_set_serial_parameters(CharDriverState *chr,
|
||||
int speed, int parity,
|
||||
int data_bits, int stop_bits)
|
||||
static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
|
||||
{
|
||||
FDCharDriver *s = chr->opaque;
|
||||
tty_serial_init(s->fd_in, speed, parity, data_bits, stop_bits);
|
||||
}
|
||||
|
||||
static void tty_set_serial_break(CharDriverState *chr, int enable)
|
||||
switch(cmd) {
|
||||
case CHR_IOCTL_SERIAL_SET_PARAMS:
|
||||
{
|
||||
FDCharDriver *s = chr->opaque;
|
||||
/* XXX: find a better solution */
|
||||
QEMUSerialSetParams *ssp = arg;
|
||||
tty_serial_init(s->fd_in, ssp->speed, ssp->parity,
|
||||
ssp->data_bits, ssp->stop_bits);
|
||||
}
|
||||
break;
|
||||
case CHR_IOCTL_SERIAL_SET_BREAK:
|
||||
{
|
||||
int enable = *(int *)arg;
|
||||
if (enable)
|
||||
tcsendbreak(s->fd_in, 1);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return -ENOTSUP;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
CharDriverState *qemu_chr_open_tty(const char *filename)
|
||||
{
|
||||
CharDriverState *chr;
|
||||
int fd;
|
||||
|
||||
fd = open(filename, O_RDWR);
|
||||
fd = open(filename, O_RDWR | O_NONBLOCK);
|
||||
if (fd < 0)
|
||||
return NULL;
|
||||
fcntl(fd, F_SETFL, O_NONBLOCK);
|
||||
@ -1488,8 +1494,70 @@ CharDriverState *qemu_chr_open_tty(const char *filename)
|
||||
chr = qemu_chr_open_fd(fd, fd);
|
||||
if (!chr)
|
||||
return NULL;
|
||||
chr->chr_set_serial_parameters = tty_set_serial_parameters;
|
||||
chr->chr_set_serial_break = tty_set_serial_break;
|
||||
chr->chr_ioctl = tty_serial_ioctl;
|
||||
return chr;
|
||||
}
|
||||
|
||||
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
|
||||
{
|
||||
int fd = (int)chr->opaque;
|
||||
uint8_t b;
|
||||
|
||||
switch(cmd) {
|
||||
case CHR_IOCTL_PP_READ_DATA:
|
||||
if (ioctl(fd, PPRDATA, &b) < 0)
|
||||
return -ENOTSUP;
|
||||
*(uint8_t *)arg = b;
|
||||
break;
|
||||
case CHR_IOCTL_PP_WRITE_DATA:
|
||||
b = *(uint8_t *)arg;
|
||||
if (ioctl(fd, PPWDATA, &b) < 0)
|
||||
return -ENOTSUP;
|
||||
break;
|
||||
case CHR_IOCTL_PP_READ_CONTROL:
|
||||
if (ioctl(fd, PPRCONTROL, &b) < 0)
|
||||
return -ENOTSUP;
|
||||
*(uint8_t *)arg = b;
|
||||
break;
|
||||
case CHR_IOCTL_PP_WRITE_CONTROL:
|
||||
b = *(uint8_t *)arg;
|
||||
if (ioctl(fd, PPWCONTROL, &b) < 0)
|
||||
return -ENOTSUP;
|
||||
break;
|
||||
case CHR_IOCTL_PP_READ_STATUS:
|
||||
if (ioctl(fd, PPRSTATUS, &b) < 0)
|
||||
return -ENOTSUP;
|
||||
*(uint8_t *)arg = b;
|
||||
break;
|
||||
default:
|
||||
return -ENOTSUP;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
CharDriverState *qemu_chr_open_pp(const char *filename)
|
||||
{
|
||||
CharDriverState *chr;
|
||||
int fd;
|
||||
|
||||
fd = open(filename, O_RDWR);
|
||||
if (fd < 0)
|
||||
return NULL;
|
||||
|
||||
if (ioctl(fd, PPCLAIM) < 0) {
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
chr = qemu_mallocz(sizeof(CharDriverState));
|
||||
if (!chr) {
|
||||
close(fd);
|
||||
return NULL;
|
||||
}
|
||||
chr->opaque = (void *)fd;
|
||||
chr->chr_write = null_chr_write;
|
||||
chr->chr_add_read_handler = null_chr_add_read_handler;
|
||||
chr->chr_ioctl = pp_ioctl;
|
||||
return chr;
|
||||
}
|
||||
|
||||
@ -1522,6 +1590,9 @@ CharDriverState *qemu_chr_open(const char *filename)
|
||||
} else
|
||||
#endif
|
||||
#if defined(__linux__)
|
||||
if (strstart(filename, "/dev/parport", NULL)) {
|
||||
return qemu_chr_open_pp(filename);
|
||||
} else
|
||||
if (strstart(filename, "/dev/", NULL)) {
|
||||
return qemu_chr_open_tty(filename);
|
||||
} else
|
||||
|
||||
Loading…
Reference in New Issue
Block a user