acrn-hypervisor/hypervisor/include/debug/console.h

116 lines
3.5 KiB
C

/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CONSOLE_H
#define CONSOLE_H
#ifdef HV_DEBUG
/** Initializes the console module.
*
* @param cdev A pointer to the character device to use for the console.
*
* @return '0' on success. Any other value indicates an error.
*/
int console_init(void);
/** Writes a NUL terminated string to the console.
*
* @param str A pointer to the NUL terminated string to write.
*
* @return The number of characters written or -1 if an error occurred
* and no character was written.
*/
int console_puts(const char *str);
/** Writes a given number of characters to the console.
*
* @param str A pointer to character array to write.
* @param len The number of characters to write.
*
* @return The number of characters written or -1 if an error occurred
* and no character was written.
*/
int console_write(const char *str, size_t len);
/** Writes a single character to the console.
*
* @param ch The character to write.
*
* @preturn The number of characters written or -1 if an error
* occurred before any character was written.
*/
int console_putc(int ch);
/** Dumps an array to the console.
*
* This function dumps an array of bytes to the console
* in a hexadecimal format.
*
* @param p A pointer to the byte array to dump.
* @param len The number of bytes to dump.
*/
void console_dump_bytes(const void *p, unsigned int len);
void console_setup_timer(void);
uint32_t get_serial_handle(void);
#else
static inline int console_init(void)
{
return 0;
}
static inline int console_puts(__unused const char *str)
{
return 0;
}
static inline int console_write(__unused const char *str,
__unused size_t len)
{
return 0;
}
static inline int console_putc(__unused int ch)
{
return 0;
}
static inline void console_dump_bytes(__unused const void *p,
__unused unsigned int len)
{
}
static inline void console_setup_timer(void) {}
static inline uint32_t get_serial_handle(void) { return 0; }
#endif
#endif /* CONSOLE_H */