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/*
****************************************************************************
* (C) 2006 - Grzegorz Milos - Cambridge University
****************************************************************************
*
* File: console.h
* Author: Grzegorz Milos
* Changes:
*
* Date: Mar 2006
*
* Environment: Xen Minimal OS
* Description: Console interface.
*
* Handles console I/O. Defines printk.
*
****************************************************************************
* 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.
*/
#ifndef _LIB_CONSOLE_H_
#define _LIB_CONSOLE_H_
#include <mini-os/os.h>
#include <mini-os/traps.h>
#include <mini-os/types.h>
#include <xen/grant_table.h>
#include <xenbus.h>
#include <xen/io/console.h>
#include <stdarg.h>
struct consfront_dev {
domid_t dom;
struct xencons_interface *ring;
grant_ref_t ring_ref;
evtchn_port_t evtchn;
char *nodename;
char *backend;
xenbus_event_queue events;
#ifdef HAVE_LIBC
int fd;
#endif
};
void print(int direct, const char *fmt, va_list args);
void printk(const char *fmt, ...);
void xprintk(const char *fmt, ...);
#define tprintk(_fmt, _args...) printk("[%s] " _fmt, current->name, ##_args)
void xencons_rx(char *buf, unsigned len, struct pt_regs *regs);
void xencons_tx(void);
void init_console(void);
void console_print(struct consfront_dev *dev, char *data, int length);
void fini_console(struct consfront_dev *dev);
/* Low level functions defined in xencons_ring.c */
extern struct wait_queue_head console_queue;
struct consfront_dev *xencons_ring_init(void);
struct consfront_dev *init_consfront(char *_nodename);
int xencons_ring_send(struct consfront_dev *dev, const char *data, unsigned len);
int xencons_ring_send_no_notify(struct consfront_dev *dev, const char *data, unsigned len);
int xencons_ring_avail(struct consfront_dev *dev);
int xencons_ring_recv(struct consfront_dev *dev, char *data, unsigned len);
void free_consfront(struct consfront_dev *dev);
#endif /* _LIB_CONSOLE_H_ */
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