| 1 | /* |
| 2 | * arch/ubicom32/include/asm/vga.h |
| 3 | * Ubicom32 low level VGA/frame buffer definitions. |
| 4 | * |
| 5 | * (C) Copyright 2009, Ubicom, Inc. |
| 6 | * (c) 1998 Martin Mares <mj@ucw.cz> |
| 7 | * |
| 8 | * This file is part of the Ubicom32 Linux Kernel Port. |
| 9 | * |
| 10 | * The Ubicom32 Linux Kernel Port is free software: you can redistribute |
| 11 | * it and/or modify it under the terms of the GNU General Public License |
| 12 | * as published by the Free Software Foundation, either version 2 of the |
| 13 | * License, or (at your option) any later version. |
| 14 | * |
| 15 | * The Ubicom32 Linux Kernel Port is distributed in the hope that it |
| 16 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 17 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 18 | * the GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with the Ubicom32 Linux Kernel Port. If not, |
| 22 | * see <http://www.gnu.org/licenses/>. |
| 23 | * |
| 24 | * Ubicom32 implementation derived from (with many thanks): |
| 25 | * arch/m68knommu |
| 26 | * arch/blackfin |
| 27 | * arch/parisc |
| 28 | */ |
| 29 | |
| 30 | #ifndef _ASM_UBICOM32_VGA_H |
| 31 | #define _ASM_UBICOM32_VGA_H |
| 32 | |
| 33 | #include <asm/byteorder.h> |
| 34 | |
| 35 | /* |
| 36 | * On the PC, we can just recalculate addresses and then |
| 37 | * access the videoram directly without any black magic. |
| 38 | */ |
| 39 | |
| 40 | #define VGA_MAP_MEM(x, s) (0xb0000000L + (unsigned long)(x)) |
| 41 | |
| 42 | #define vga_readb(x) (*(x)) |
| 43 | #define vga_writeb(x, y) (*(y) = (x)) |
| 44 | |
| 45 | #define VT_BUF_HAVE_RW |
| 46 | /* |
| 47 | * These are only needed for supporting VGA or MDA text mode, which use little |
| 48 | * endian byte ordering. |
| 49 | * In other cases, we can optimize by using native byte ordering and |
| 50 | * <linux/vt_buffer.h> has already done the right job for us. |
| 51 | */ |
| 52 | |
| 53 | #undef scr_writew |
| 54 | #undef scr_readw |
| 55 | |
| 56 | static inline void scr_writew(u16 val, volatile u16 *addr) |
| 57 | { |
| 58 | *addr = cpu_to_le16(val); |
| 59 | } |
| 60 | |
| 61 | static inline u16 scr_readw(volatile const u16 *addr) |
| 62 | { |
| 63 | return le16_to_cpu(*addr); |
| 64 | } |
| 65 | |
| 66 | #define scr_memcpyw(d, s, c) memcpy(d, s, c) |
| 67 | #define scr_memmovew(d, s, c) memmove(d, s, c) |
| 68 | #define VT_BUF_HAVE_MEMCPYW |
| 69 | #define VT_BUF_HAVE_MEMMOVEW |
| 70 | |
| 71 | #endif /* _ASM_UBICOM32_VGA_H */ |
| 72 | |
