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default devices: parallel port. 

Qemu creates a default parallel port for you in case you didn't specify
one on the command line.  Right now this is tied to the '-parallel
<chardev>' command line switch, which in turn causes trouble if you are
creating your parallel port via '-device isa-parallel,<props>'.

This patch adds a variable default_parallel which says whenever a default
parallel port should be added.  It is enabled by default.  It is cleared
when qemu finds '-parallel' or '-device isa-parallel' on the command line.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-12-08 13:11:42 +01:00 committed by Anthony Liguori
parent 998bbd74b9
commit 6a5e8b0e31
1 changed files with 34 additions and 30 deletions
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64
vl.c
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@ -272,12 +272,14 @@ static QEMUBootSetHandler *boot_set_handler;
static void *boot_set_opaque;
static int default_serial = 1;
static int default_parallel = 1;
static struct {
const char *driver;
int *flag;
} default_list[] = {
{ .driver = "isa-serial", .flag = &default_serial },
{ .driver = "isa-serial", .flag = &default_serial },
{ .driver = "isa-parallel", .flag = &default_parallel },
};
static int default_driver_check(QemuOpts *opts, void *opaque)
@ -4625,6 +4627,7 @@ struct device_config {
DEV_USB, /* -usbdevice */
DEV_BT, /* -bt */
DEV_SERIAL, /* -serial */
DEV_PARALLEL, /* -parallel */
} type;
const char *cmdline;
QTAILQ_ENTRY(device_config) next;
@ -4700,6 +4703,28 @@ static int serial_parse(const char *devname)
return 0;
}
static int parallel_parse(const char *devname)
{
static int index = 0;
char label[32];
if (strcmp(devname, "none") == 0)
return 0;
if (index == MAX_PARALLEL_PORTS) {
fprintf(stderr, "qemu: too many parallel ports\n");
exit(1);
}
snprintf(label, sizeof(label), "parallel%d", index);
parallel_hds[index] = qemu_chr_open(label, devname, NULL);
if (!parallel_hds[index]) {
fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
devname, strerror(errno));
return -1;
}
index++;
return 0;
}
int main(int argc, char **argv, char **envp)
{
const char *gdbstub_dev = NULL;
@ -4718,8 +4743,6 @@ int main(int argc, char **argv, char **envp)
CharDriverState *monitor_hds[MAX_MONITOR_DEVICES];
const char *monitor_devices[MAX_MONITOR_DEVICES];
int monitor_device_index;
const char *parallel_devices[MAX_PARALLEL_PORTS];
int parallel_device_index;
const char *virtio_consoles[MAX_VIRTIO_CONSOLES];
int virtio_console_index;
const char *loadvm = NULL;
@ -4787,11 +4810,6 @@ int main(int argc, char **argv, char **envp)
cyls = heads = secs = 0;
translation = BIOS_ATA_TRANSLATION_AUTO;
parallel_devices[0] = "vc:80Cx24C";
for(i = 1; i < MAX_PARALLEL_PORTS; i++)
parallel_devices[i] = NULL;
parallel_device_index = 0;
for(i = 0; i < MAX_VIRTIO_CONSOLES; i++)
virtio_consoles[i] = NULL;
virtio_console_index = 0;
@ -5260,12 +5278,8 @@ int main(int argc, char **argv, char **envp)
virtio_console_index++;
break;
case QEMU_OPTION_parallel:
if (parallel_device_index >= MAX_PARALLEL_PORTS) {
fprintf(stderr, "qemu: too many parallel ports\n");
exit(1);
}
parallel_devices[parallel_device_index] = optarg;
parallel_device_index++;
add_device_config(DEV_PARALLEL, optarg);
default_parallel = 0;
break;
case QEMU_OPTION_loadvm:
loadvm = optarg;
@ -5541,14 +5555,16 @@ int main(int argc, char **argv, char **envp)
if (display_type == DT_NOGRAPHIC) {
if (default_serial)
add_device_config(DEV_SERIAL, "stdio");
if (parallel_device_index == 0)
parallel_devices[0] = "null";
if (default_parallel)
add_device_config(DEV_PARALLEL, "null");
if (strncmp(monitor_devices[0], "vc", 2) == 0) {
monitor_devices[0] = "stdio";
}
} else {
if (default_serial)
add_device_config(DEV_SERIAL, "vc:80Cx24C");
if (default_parallel)
add_device_config(DEV_PARALLEL, "vc:80Cx24C");
}
if (qemu_opts_foreach(&qemu_chardev_opts, chardev_init_func, NULL, 1) != 0)
@ -5764,20 +5780,8 @@ int main(int argc, char **argv, char **envp)
if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
exit(1);
for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
const char *devname = parallel_devices[i];
if (devname && strcmp(devname, "none")) {
char label[32];
snprintf(label, sizeof(label), "parallel%d", i);
parallel_hds[i] = qemu_chr_open(label, devname, NULL);
if (!parallel_hds[i]) {
fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
devname, strerror(errno));
exit(1);
}
}
}
if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
exit(1);
for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
const char *devname = virtio_consoles[i];