kernel-ark/include/asm-powerpc/hvconsole.h
Ryan S. Arnold 45d607ed92 [PATCH] powerpc: hvc_console updates
These are some updates from both Ryan and Arnd for the hvc_console
driver:

The main point is to enable the inclusion of a console driver
for rtas, which is currrently needed for the cell platform.

Also shuffle around some data-type declarations and moves some
functions out of include/asm-ppc64/hvconsole.h and into a new
drivers/char/hvc_console.h file.

Signed-off-by: "Ryan S. Arnold" <rsa@us.ibm.com>
Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-03-28 16:45:26 +11:00

42 lines
1.4 KiB
C

/*
* hvconsole.h
* Copyright (C) 2004 Ryan S Arnold, IBM Corporation
*
* LPAR console support.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _PPC64_HVCONSOLE_H
#define _PPC64_HVCONSOLE_H
#ifdef __KERNEL__
/*
* PSeries firmware will only send/recv up to 16 bytes of character data per
* hcall.
*/
#define MAX_VIO_PUT_CHARS 16
#define SIZE_VIO_GET_CHARS 16
/*
* Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count'
* parm is included to conform to put_chars() function pointer template
*/
extern int hvc_get_chars(uint32_t vtermno, char *buf, int count);
extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count);
#endif /* __KERNEL__ */
#endif /* _PPC64_HVCONSOLE_H */