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chardev: add parallel chardev support to chardev-add (qmp)

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Also alias the old parport name to parallel for -chardev.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2013-01-10 14:20:58 +01:00
parent d59044ef74
commit 88a946d32d
3 changed files with 34 additions and 18 deletions
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3
qapi-schema.json
View File

@ -3042,7 +3042,8 @@
#
# Since: 1.4
##
{ 'enum': 'ChardevPortKind', 'data': [ 'serial' ] }
{ 'enum': 'ChardevPortKind', 'data': [ 'serial',
'parallel' ] }
{ 'type': 'ChardevPort', 'data': { 'device' : 'str',
'type' : 'ChardevPortKind'} }

44
qemu-char.c
View File

@ -1367,17 +1367,10 @@ static void pp_close(CharDriverState *chr)
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
static CharDriverState *qemu_chr_open_pp_fd(int fd)
{
const char *filename = qemu_opt_get(opts, "path");
CharDriverState *chr;
ParallelCharDriver *drv;
int fd;
TFR(fd = qemu_open(filename, O_RDWR));
if (fd < 0) {
return NULL;
}
if (ioctl(fd, PPCLAIM) < 0) {
close(fd);
@ -1441,16 +1434,9 @@ static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
return 0;
}
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
static CharDriverState *qemu_chr_open_pp_fd(int fd)
{
const char *filename = qemu_opt_get(opts, "path");
CharDriverState *chr;
int fd;
fd = qemu_open(filename, O_RDWR);
if (fd < 0) {
return NULL;
}
chr = g_malloc0(sizeof(CharDriverState));
chr->opaque = (void *)(intptr_t)fd;
@ -2750,6 +2736,22 @@ fail:
return NULL;
}
#ifdef HAVE_CHARDEV_PARPORT
static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
{
const char *filename = qemu_opt_get(opts, "path");
int fd;
fd = qemu_open(filename, O_RDWR);
if (fd < 0) {
return NULL;
}
return qemu_chr_open_pp_fd(fd);
}
#endif
static const struct {
const char *name;
CharDriverState *(*open)(QemuOpts *opts);
@ -2779,6 +2781,7 @@ static const struct {
{ .name = "pty", .open = qemu_chr_open_pty },
#endif
#ifdef HAVE_CHARDEV_PARPORT
{ .name = "parallel", .open = qemu_chr_open_pp },
{ .name = "parport", .open = qemu_chr_open_pp },
#endif
#ifdef CONFIG_SPICE
@ -3103,6 +3106,15 @@ static CharDriverState *qmp_chardev_open_port(ChardevPort *port, Error **errp)
}
socket_set_nonblock(fd);
return qemu_chr_open_tty_fd(fd);
#endif
#ifdef HAVE_CHARDEV_PARPORT
case CHARDEV_PORT_KIND_PARALLEL:
flags = O_RDWR;
fd = qmp_chardev_open_file_source(port->device, flags, errp);
if (error_is_set(errp)) {
return NULL;
}
return qemu_chr_open_pp_fd(fd);
#endif
default:
error_setg(errp, "unknown chardev port (%d)", port->type);

5
qemu-options.hx
View File

@ -1746,6 +1746,7 @@ DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
"-chardev tty,id=id,path=path[,mux=on|off]\n"
#endif
#if defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__)
"-chardev parallel,id=id,path=path[,mux=on|off]\n"
"-chardev parport,id=id,path=path[,mux=on|off]\n"
#endif
#if defined(CONFIG_SPICE)
@ -1776,6 +1777,7 @@ Backend is one of:
@option{stdio},
@option{braille},
@option{tty},
@option{parallel},
@option{parport},
@option{spicevmc}.
@option{spiceport}.
@ -1943,9 +1945,10 @@ DragonFlyBSD hosts. It is an alias for -serial.
@option{path} specifies the path to the tty. @option{path} is required.
@item -chardev parallel ,id=@var{id} ,path=@var{path}
@item -chardev parport ,id=@var{id} ,path=@var{path}
@option{parport} is only available on Linux, FreeBSD and DragonFlyBSD hosts.
@option{parallel} is only available on Linux, FreeBSD and DragonFlyBSD hosts.
Connect to a local parallel port.