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add virtio-console support (Christian Ehrhardt)

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This patch adds the virtio console to qemu. This console can be found after the
serial and parallel outputs as another virtual console. In the -nographic case
it is redirected to the null output by default.

Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6315 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2009-01-15 20:05:25 +00:00
parent c76ee25de4
commit 9ede2fde19
3 changed files with 33 additions and 1 deletions
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2
Makefile.target
View file

@ -554,7 +554,7 @@ ifndef CONFIG_USER_ONLY
OBJS=vl.o osdep.o monitor.o pci.o loader.o isa_mmio.o machine.o
# virtio has to be here due to weird dependency between PCI and virtio-net.
# need to fix this properly
OBJS+=virtio.o virtio-blk.o virtio-balloon.o virtio-net.o
OBJS+=virtio.o virtio-blk.o virtio-balloon.o virtio-net.o virtio-console.o
OBJS+=fw_cfg.o
ifdef CONFIG_KVM
OBJS+=kvm.o kvm-all.o

6
sysemu.h
View file

@ -158,6 +158,12 @@ extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/* virtio consoles */
#define MAX_VIRTIO_CONSOLES 1
extern CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
#ifdef NEED_CPU_H

26
vl.c
View file

@ -209,6 +209,7 @@ static int no_frame = 0;
int no_quit = 0;
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
#ifdef TARGET_I386
int win2k_install_hack = 0;
#endif
@ -4502,6 +4503,8 @@ int main(int argc, char **argv, char **envp)
int serial_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;
QEMUMachine *machine;
const char *cpu_model;
@ -4575,6 +4578,11 @@ int main(int argc, char **argv, char **envp)
parallel_devices[i] = NULL;
parallel_device_index = 0;
virtio_consoles[0] = "vc:80Cx24C";
for(i = 1; i < MAX_VIRTIO_CONSOLES; i++)
virtio_consoles[i] = NULL;
virtio_console_index = 0;
usb_devices_index = 0;
nb_net_clients = 0;
@ -5170,6 +5178,8 @@ int main(int argc, char **argv, char **envp)
parallel_devices[0] = "null";
if (strncmp(monitor_device, "vc", 2) == 0)
monitor_device = "stdio";
if (virtio_console_index == 0)
virtio_consoles[0] = "null";
}
#ifndef _WIN32
@ -5464,6 +5474,22 @@ int main(int argc, char **argv, char **envp)
}
}
for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
const char *devname = virtio_consoles[i];
if (devname && strcmp(devname, "none")) {
char label[32];
snprintf(label, sizeof(label), "virtcon%d", i);
virtcon_hds[i] = qemu_chr_open(label, devname);
if (!virtcon_hds[i]) {
fprintf(stderr, "qemu: could not open virtio console '%s'\n",
devname);
exit(1);
}
if (strstart(devname, "vc", 0))
qemu_chr_printf(virtcon_hds[i], "virtio console%d\r\n", i);
}
}
if (kvm_enabled()) {
int ret;