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PC parallel port support (Mark Jonckheere)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1221 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-01-15 12:02:56 +00:00
parent e5843bc816
commit 6508fe59e0
6 changed files with 244 additions and 1 deletions
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1
Changelog
View file

@ -12,6 +12,7 @@ version 0.6.2:
- initial x86_64 target support
- initial APIC support
- MMX/SSE/SSE2/PNI support
- PC parallel port support (Mark Jonckheere)
version 0.6.1:

2
Makefile.target
View file

@ -316,7 +316,7 @@ ifeq ($(TARGET_BASE_ARCH), i386)
# Hardware support
VL_OBJS+= ide.o ne2000.o pckbd.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pc.o
VL_OBJS+= cirrus_vga.o mixeng.o apic.o
VL_OBJS+= cirrus_vga.o mixeng.o apic.o parallel.o
endif
ifeq ($(TARGET_ARCH), ppc)
VL_OBJS+= ppc.o ide.o ne2000.o pckbd.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)

188
hw/parallel.c Normal file
View file

@ -0,0 +1,188 @@
/*
* QEMU Parallel PORT emulation
*
* Copyright (c) 2003-2004 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
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "vl.h"
//#define DEBUG_PARALLEL
/*
* These are the definitions for the Printer Status Register
*/
#define PARA_STS_BUSY 0x80 /* Busy complement */
#define PARA_STS_ACK 0x40 /* Acknowledge */
#define PARA_STS_PAPER 0x20 /* Out of paper */
#define PARA_STS_ONLINE 0x10 /* Online */
#define PARA_STS_ERROR 0x08 /* Error complement */
/*
* These are the definitions for the Printer Control Register
*/
#define PARA_CTR_INTEN 0x10 /* IRQ Enable */
#define PARA_CTR_SELECT 0x08 /* Select In complement */
#define PARA_CTR_INIT 0x04 /* Initialize Printer complement */
#define PARA_CTR_AUTOLF 0x02 /* Auto linefeed complement */
#define PARA_CTR_STROBE 0x01 /* Strobe complement */
struct ParallelState {
uint8_t data;
uint8_t status; /* read only register */
uint8_t control;
int irq;
int irq_pending;
CharDriverState *chr;
};
static void parallel_update_irq(ParallelState *s)
{
if (s->irq_pending)
pic_set_irq(s->irq, 1);
else
pic_set_irq(s->irq, 0);
}
static void parallel_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
ParallelState *s = opaque;
addr &= 7;
#ifdef DEBUG_PARALLEL
printf("parallel: write addr=0x%02x val=0x%02x\n", addr, val);
#endif
switch(addr) {
case 0:
s->data = val;
parallel_update_irq(s);
break;
case 2:
if ((val & PARA_CTR_INIT) == 0 ) {
s->status = PARA_STS_BUSY;
s->status |= PARA_STS_ACK;
s->status |= PARA_STS_ONLINE;
s->status |= PARA_STS_ERROR;
}
else if (val & PARA_CTR_SELECT) {
if (val & PARA_CTR_STROBE) {
s->status &= ~PARA_STS_BUSY;
if ((s->control & PARA_CTR_STROBE) == 0)
qemu_chr_write(s->chr, &s->data, 1);
} else {
if (s->control & PARA_CTR_INTEN) {
s->irq_pending = 1;
}
}
}
parallel_update_irq(s);
s->control = val;
break;
}
}
static uint32_t parallel_ioport_read(void *opaque, uint32_t addr)
{
ParallelState *s = opaque;
uint32_t ret = 0xff;
addr &= 7;
switch(addr) {
case 0:
ret = s->data;
break;
case 1:
ret = s->status;
s->irq_pending = 0;
if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) {
/* XXX Fixme: wait 5 microseconds */
if (s->status & PARA_STS_ACK)
s->status &= ~PARA_STS_ACK;
else {
/* XXX Fixme: wait 5 microseconds */
s->status |= PARA_STS_ACK;
s->status |= PARA_STS_BUSY;
}
}
parallel_update_irq(s);
break;
case 2:
ret = s->control;
break;
}
#ifdef DEBUG_PARALLEL
printf("parallel: read addr=0x%02x val=0x%02x\n", addr, ret);
#endif
return ret;
}
static int parallel_can_receive(ParallelState *s)
{
return 0;
}
static void parallel_receive_byte(ParallelState *s, int ch)
{
}
static void parallel_receive_break(ParallelState *s)
{
}
static int parallel_can_receive1(void *opaque)
{
ParallelState *s = opaque;
return parallel_can_receive(s);
}
static void parallel_receive1(void *opaque, const uint8_t *buf, int size)
{
ParallelState *s = opaque;
parallel_receive_byte(s, buf[0]);
}
static void parallel_event(void *opaque, int event)
{
ParallelState *s = opaque;
}
/* If fd is zero, it means that the parallel device uses the console */
ParallelState *parallel_init(int base, int irq, CharDriverState *chr)
{
ParallelState *s;
s = qemu_mallocz(sizeof(ParallelState));
if (!s)
return NULL;
s->irq = irq;
s->data = 0;
s->status = PARA_STS_BUSY;
s->status |= PARA_STS_ACK;
s->status |= PARA_STS_ONLINE;
s->status |= PARA_STS_ERROR;
s->control = PARA_CTR_SELECT;
s->control |= PARA_CTR_INIT;
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;
}

9
hw/pc.c
View file

@ -376,6 +376,9 @@ static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
/* PC hardware initialisation */
void pc_init(int ram_size, int vga_ram_size, int boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
@ -538,6 +541,12 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
}
}
for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
if (parallel_hds[i]) {
parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]);
}
}
if (pci_enabled) {
for(i = 0; i < nb_nics; i++) {
pci_ne2000_init(pci_bus, &nd_table[i]);

34
vl.c
View file

@ -136,6 +136,7 @@ int graphic_depth = 15;
int full_screen = 0;
TextConsole *vga_console;
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/***********************************************************/
/* x86 ISA bus support */
@ -2750,6 +2751,7 @@ void help(void)
"Debug/Expert options:\n"
"-monitor dev redirect the monitor to char device 'dev'\n"
"-serial dev redirect the serial port to char device 'dev'\n"
"-parallel dev redirect the parallel port to char device 'dev'\n"
"-pidfile file Write PID to 'file'\n"
"-S freeze CPU at startup (use 'c' to start execution)\n"
"-s wait gdb connection to port %d\n"
@ -2842,6 +2844,7 @@ enum {
QEMU_OPTION_std_vga,
QEMU_OPTION_monitor,
QEMU_OPTION_serial,
QEMU_OPTION_parallel,
QEMU_OPTION_loadvm,
QEMU_OPTION_full_screen,
QEMU_OPTION_pidfile,
@ -2904,6 +2907,7 @@ const QEMUOption qemu_options[] = {
{ "std-vga", 0, QEMU_OPTION_std_vga },
{ "monitor", 1, QEMU_OPTION_monitor },
{ "serial", 1, QEMU_OPTION_serial },
{ "parallel", 1, QEMU_OPTION_parallel },
{ "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
{ "full-screen", 0, QEMU_OPTION_full_screen },
{ "pidfile", HAS_ARG, QEMU_OPTION_pidfile },
@ -2986,6 +2990,8 @@ int main(int argc, char **argv)
char monitor_device[128];
char serial_devices[MAX_SERIAL_PORTS][128];
int serial_device_index;
char parallel_devices[MAX_PARALLEL_PORTS][128];
int parallel_device_index;
const char *loadvm = NULL;
#if !defined(CONFIG_SOFTMMU)
@ -3019,6 +3025,11 @@ int main(int argc, char **argv)
serial_devices[i][0] = '\0';
serial_device_index = 0;
pstrcpy(parallel_devices[0], sizeof(parallel_devices[0]), "vc");
for(i = 1; i < MAX_PARALLEL_PORTS; i++)
parallel_devices[i][0] = '\0';
parallel_device_index = 0;
nb_tun_fds = 0;
net_if_type = -1;
nb_nics = 1;
@ -3115,6 +3126,7 @@ int main(int argc, char **argv)
case QEMU_OPTION_nographic:
pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
pstrcpy(parallel_devices[0], sizeof(parallel_devices[0]), "stdio");
nographic = 1;
break;
case QEMU_OPTION_kernel:
@ -3329,6 +3341,15 @@ int main(int argc, char **argv)
sizeof(serial_devices[0]), optarg);
serial_device_index++;
break;
case QEMU_OPTION_parallel:
if (parallel_device_index >= MAX_PARALLEL_PORTS) {
fprintf(stderr, "qemu: too many parallel ports\n");
exit(1);
}
pstrcpy(parallel_devices[parallel_device_index],
sizeof(parallel_devices[0]), optarg);
parallel_device_index++;
break;
case QEMU_OPTION_loadvm:
loadvm = optarg;
break;
@ -3552,6 +3573,19 @@ int main(int argc, char **argv)
}
}
for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
if (parallel_devices[i][0] != '\0') {
parallel_hds[i] = qemu_chr_open(parallel_devices[i]);
if (!parallel_hds[i]) {
fprintf(stderr, "qemu: could not open parallel device '%s'\n",
parallel_devices[i]);
exit(1);
}
if (!strcmp(parallel_devices[i], "vc"))
qemu_chr_printf(parallel_hds[i], "parallel%d console\n", i);
}
}
/* setup cpu signal handlers for MMU / self modifying code handling */
#if !defined(CONFIG_SOFTMMU)

11
vl.h
View file

@ -224,6 +224,12 @@ void console_select(unsigned int index);
extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
/* parallel ports */
#define MAX_PARALLEL_PORTS 3
extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/* network redirectors support */
#define MAX_NICS 8
@ -632,6 +638,11 @@ void rtc_set_date(RTCState *s, const struct tm *tm);
typedef struct SerialState SerialState;
SerialState *serial_init(int base, int irq, CharDriverState *chr);
/* parallel.c */
typedef struct ParallelState ParallelState;
ParallelState *parallel_init(int base, int irq, CharDriverState *chr);
/* i8259.c */
void pic_set_irq(int irq, int level);