* IN THE SOFTWARE.
*/
-#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
+#include <linux/vt.h>
#include <linux/serial.h>
#include <linux/major.h>
#include <linux/ptrace.h>
#include <linux/console.h>
#include <linux/bootmem.h>
#include <linux/sysrq.h>
+#include <linux/screen_info.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <xen/interface/event_channel.h>
#include <asm/hypervisor.h>
#include <xen/evtchn.h>
+#include <xen/xenbus.h>
#include <xen/xencons.h>
/*
* 'xencons=off' [XC_OFF]: Console is disabled.
* 'xencons=tty' [XC_TTY]: Console attached to '/dev/tty[0-9]+'.
* 'xencons=ttyS' [XC_SERIAL]: Console attached to '/dev/ttyS[0-9]+'.
+ * 'xencons=xvc' [XC_XVC]: Console attached to '/dev/xvc0'.
* [XC_DEFAULT]: DOM0 -> XC_SERIAL ; all others -> XC_TTY.
*
* NB. In mode XC_TTY, we create dummy consoles for tty2-63. This suppresses
* warnings from standard distro startup scripts.
*/
-static enum { XC_OFF, XC_DEFAULT, XC_TTY, XC_SERIAL } xc_mode = XC_DEFAULT;
+static enum {
+ XC_OFF, XC_DEFAULT, XC_TTY, XC_SERIAL, XC_XVC
+} xc_mode = XC_DEFAULT;
static int xc_num = -1;
+/* /dev/xvc0 device number allocated by lanana.org. */
+#define XEN_XVC_MAJOR 204
+#define XEN_XVC_MINOR 191
+
#ifdef CONFIG_MAGIC_SYSRQ
static unsigned long sysrq_requested;
-extern int sysrq_enabled;
#endif
static int __init xencons_setup(char *str)
char *q;
int n;
- if (!strncmp(str, "ttyS", 4))
+ if (!strncmp(str, "ttyS", 4)) {
xc_mode = XC_SERIAL;
- else if (!strncmp(str, "tty", 3))
+ str += 4;
+ } else if (!strncmp(str, "tty", 3)) {
xc_mode = XC_TTY;
- else if (!strncmp(str, "off", 3))
+ str += 3;
+ } else if (!strncmp(str, "xvc", 3)) {
+ xc_mode = XC_XVC;
+ str += 3;
+ } else if (!strncmp(str, "off", 3)) {
xc_mode = XC_OFF;
-
- switch (xc_mode) {
- case XC_SERIAL:
- n = simple_strtol(str+4, &q, 10);
- if (q > (str + 4))
- xc_num = n;
- break;
- case XC_TTY:
- n = simple_strtol(str+3, &q, 10);
- if (q > (str + 3))
- xc_num = n;
- break;
- default:
- break;
+ str += 3;
}
+ n = simple_strtol(str, &q, 10);
+ if (q != str)
+ xc_num = n;
+
return 1;
}
__setup("xencons=", xencons_setup);
.index = -1,
};
-#define __RETCODE 0
static int __init xen_console_init(void)
{
if (!is_running_on_xen())
- return __RETCODE;
+ goto out;
- if (xen_start_info->flags & SIF_INITDOMAIN) {
+ if (is_initial_xendomain()) {
if (xc_mode == XC_DEFAULT)
xc_mode = XC_SERIAL;
kcons_info.write = kcons_write_dom0;
} else {
+ if (!xen_start_info->console.domU.evtchn)
+ goto out;
if (xc_mode == XC_DEFAULT)
- xc_mode = XC_TTY;
+ xc_mode = XC_XVC;
kcons_info.write = kcons_write;
}
switch (xc_mode) {
+ case XC_XVC:
+ strcpy(kcons_info.name, "xvc");
+ if (xc_num == -1)
+ xc_num = 0;
+ break;
+
case XC_SERIAL:
strcpy(kcons_info.name, "ttyS");
if (xc_num == -1)
break;
default:
- return __RETCODE;
+ goto out;
}
wbuf = alloc_bootmem(wbuf_size);
register_console(&kcons_info);
- return __RETCODE;
+ out:
+ return 0;
}
console_initcall(xen_console_init);
int sz;
/* Emergency console is synchronous, so there's nothing to flush. */
- if (xen_start_info->flags & SIF_INITDOMAIN)
+ if (!is_running_on_xen() ||
+ is_initial_xendomain() ||
+ !xen_start_info->console.domU.evtchn)
return;
/* Spin until console data is flushed through to the daemon. */
}
+void dom0_init_screen_info(const struct dom0_vga_console_info *info)
+{
+ switch (info->video_type) {
+ case XEN_VGATYPE_TEXT_MODE_3:
+ screen_info.orig_video_mode = 3;
+ screen_info.orig_video_ega_bx = 3;
+ screen_info.orig_video_isVGA = 1;
+ screen_info.orig_video_lines = info->u.text_mode_3.rows;
+ screen_info.orig_video_cols = info->u.text_mode_3.columns;
+ screen_info.orig_x = info->u.text_mode_3.cursor_x;
+ screen_info.orig_y = info->u.text_mode_3.cursor_y;
+ screen_info.orig_video_points =
+ info->u.text_mode_3.font_height;
+ break;
+ case XEN_VGATYPE_VESA_LFB:
+ screen_info.orig_video_isVGA = VIDEO_TYPE_VLFB;
+ screen_info.lfb_width = info->u.vesa_lfb.width;
+ screen_info.lfb_height = info->u.vesa_lfb.height;
+ screen_info.lfb_depth = info->u.vesa_lfb.bits_per_pixel;
+ screen_info.lfb_base = info->u.vesa_lfb.lfb_base;
+ screen_info.lfb_size = info->u.vesa_lfb.lfb_size;
+ screen_info.lfb_linelength = info->u.vesa_lfb.bytes_per_line;
+ screen_info.red_size = info->u.vesa_lfb.red_size;
+ screen_info.red_pos = info->u.vesa_lfb.red_pos;
+ screen_info.green_size = info->u.vesa_lfb.green_size;
+ screen_info.green_pos = info->u.vesa_lfb.green_pos;
+ screen_info.blue_size = info->u.vesa_lfb.blue_size;
+ screen_info.blue_pos = info->u.vesa_lfb.blue_pos;
+ screen_info.rsvd_size = info->u.vesa_lfb.rsvd_size;
+ screen_info.rsvd_pos = info->u.vesa_lfb.rsvd_pos;
+ break;
+ }
+}
+
+
/******************** User-space console driver (/dev/console) ************/
#define DRV(_d) (_d)
-#define DUMMY_TTY(_tty) ((xc_mode != XC_SERIAL) && \
+#define DUMMY_TTY(_tty) ((xc_mode == XC_TTY) && \
((_tty)->index != (xc_num - 1)))
-static struct termios *xencons_termios[MAX_NR_CONSOLES];
-static struct termios *xencons_termios_locked[MAX_NR_CONSOLES];
+static struct ktermios *xencons_termios[MAX_NR_CONSOLES];
+static struct ktermios *xencons_termios_locked[MAX_NR_CONSOLES];
static struct tty_struct *xencons_tty;
static int xencons_priv_irq;
static char x_char;
-void xencons_rx(char *buf, unsigned len, struct pt_regs *regs)
+void xencons_rx(char *buf, unsigned len)
{
int i;
unsigned long flags;
for (i = 0; i < len; i++) {
#ifdef CONFIG_MAGIC_SYSRQ
- if (sysrq_enabled) {
+ if (sysrq_on()) {
if (buf[i] == '\x0f') { /* ^O */
sysrq_requested = jiffies;
continue; /* don't print the sysrq key */
spin_unlock_irqrestore(
&xencons_lock, flags);
handle_sysrq(
- buf[i], regs, xencons_tty);
+ buf[i], xencons_tty);
spin_lock_irqsave(
&xencons_lock, flags);
continue;
int sent, sz, work_done = 0;
if (x_char) {
- if (xen_start_info->flags & SIF_INITDOMAIN)
+ if (is_initial_xendomain())
kcons_write_dom0(NULL, &x_char, 1);
else
while (x_char)
sz = wp - wc;
if (sz > (wbuf_size - WBUF_MASK(wc)))
sz = wbuf_size - WBUF_MASK(wc);
- if (xen_start_info->flags & SIF_INITDOMAIN) {
+ if (is_initial_xendomain()) {
kcons_write_dom0(NULL, &wbuf[WBUF_MASK(wc)], sz);
wc += sz;
} else {
}
/* Privileged receive callback and transmit kicker. */
-static irqreturn_t xencons_priv_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
+static irqreturn_t xencons_priv_interrupt(int irq, void *dev_id)
{
static char rbuf[16];
int l;
while ((l = HYPERVISOR_console_io(CONSOLEIO_read, 16, rbuf)) > 0)
- xencons_rx(rbuf, l, regs);
+ xencons_rx(rbuf, l);
xencons_tx();
if (xc_mode == XC_OFF)
return 0;
- xencons_ring_init();
+ if (!is_initial_xendomain()) {
+ rc = xencons_ring_init();
+ if (rc)
+ return rc;
+ }
- xencons_driver = alloc_tty_driver((xc_mode == XC_SERIAL) ?
- 1 : MAX_NR_CONSOLES);
+ xencons_driver = alloc_tty_driver((xc_mode == XC_TTY) ?
+ MAX_NR_CONSOLES : 1);
if (xencons_driver == NULL)
return -ENOMEM;
DRV(xencons_driver)->termios = xencons_termios;
DRV(xencons_driver)->termios_locked = xencons_termios_locked;
- if (xc_mode == XC_SERIAL) {
+ switch (xc_mode) {
+ case XC_XVC:
+ DRV(xencons_driver)->name = "xvc";
+ DRV(xencons_driver)->major = XEN_XVC_MAJOR;
+ DRV(xencons_driver)->minor_start = XEN_XVC_MINOR;
+ DRV(xencons_driver)->name_base = xc_num;
+ break;
+ case XC_SERIAL:
DRV(xencons_driver)->name = "ttyS";
DRV(xencons_driver)->minor_start = 64 + xc_num;
- DRV(xencons_driver)->name_base = 0 + xc_num;
- } else {
+ DRV(xencons_driver)->name_base = xc_num;
+ break;
+ default:
DRV(xencons_driver)->name = "tty";
DRV(xencons_driver)->minor_start = 1;
DRV(xencons_driver)->name_base = 1;
+ break;
}
tty_set_operations(xencons_driver, &xencons_ops);
return rc;
}
- if (xen_start_info->flags & SIF_INITDOMAIN) {
+ if (is_initial_xendomain()) {
xencons_priv_irq = bind_virq_to_irqhandler(
VIRQ_CONSOLE,
0,
printk("Xen virtual console successfully installed as %s%d\n",
DRV(xencons_driver)->name, xc_num);
+ /* Check about framebuffer messing up the console */
+ if (!is_initial_xendomain() &&
+ !xenbus_exists(XBT_NIL, "device", "vfb")) {
+ /* FIXME: this is ugly */
+ unregister_console(&kcons_info);
+ kcons_info.flags |= CON_CONSDEV;
+ register_console(&kcons_info);
+ }
+
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff