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/*
* arch/ubicom32/include/asm/vga.h
* Ubicom32 low level VGA/frame buffer definitions.
*
* (C) Copyright 2009, Ubicom, Inc.
* (c) 1998 Martin Mares <mj@ucw.cz>
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port 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.
*
* The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_VGA_H
#define _ASM_UBICOM32_VGA_H
#include <asm/byteorder.h>
/*
* On the PC, we can just recalculate addresses and then
* access the videoram directly without any black magic.
*/
#define VGA_MAP_MEM(x, s) (0xb0000000L + (unsigned long)(x))
#define vga_readb(x) (*(x))
#define vga_writeb(x, y) (*(y) = (x))
#define VT_BUF_HAVE_RW
/*
* These are only needed for supporting VGA or MDA text mode, which use little
* endian byte ordering.
* In other cases, we can optimize by using native byte ordering and
* <linux/vt_buffer.h> has already done the right job for us.
*/
#undef scr_writew
#undef scr_readw
static inline void scr_writew(u16 val, volatile u16 *addr)
{
*addr = cpu_to_le16(val);
}
static inline u16 scr_readw(volatile const u16 *addr)
{
return le16_to_cpu(*addr);
}
#define scr_memcpyw(d, s, c) memcpy(d, s, c)
#define scr_memmovew(d, s, c) memmove(d, s, c)
#define VT_BUF_HAVE_MEMCPYW
#define VT_BUF_HAVE_MEMMOVEW
#endif /* _ASM_UBICOM32_VGA_H */
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