include/asm-ppc/vga.h

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 1 /*
 2  * Access to VGA videoram
 3  *
 4  * (c) 1998 Martin Mares <mj@ucw.cz>
 5  */
 6
 7 #ifndef _LINUX_ASM_VGA_H_
 8 #define _LINUX_ASM_VGA_H_
 9
 10 #include <asm/io.h>
 11 #include <asm/processor.h>
 12
 13 #include <linux/config.h>
 14 #include <linux/console.h>
 15
 16 #define VT_BUF_HAVE_RW
 17
 18 extern inlinevoidscr_writew(u16 val, u16 *addr)
 19 {
 20 /* If using vgacon (not fbcon) byteswap the writes.
 21  * If non-vgacon assume fbcon and don't byteswap
 22  * just like include/linux/vt_buffer.h.
 23  * XXX: this is a performance loss so get rid of it
 24  * as soon as fbcon works on prep.
 25  * -- Cort
 26  */
 27 #ifdef CONFIG_FB
 28 if( conswitchp != &vga_con )
 29 (*(addr) = (val));
 30 else
 31 #endif/* CONFIG_FB */
 32 st_le16(addr, val);
 33 }
 34
 35 extern inline u16 scr_readw(const u16 *addr)
 36 {
 37 #ifdef CONFIG_FB
 38 if( conswitchp != &vga_con )
 39 return(*(addr));
 40 else
 41 #endif/* CONFIG_FB */
 42 returnld_le16((unsigned short*)addr);
 43 }
 44
 45 #define VT_BUF_HAVE_MEMCPYF
 46 #define scr_memcpyw_from memcpy
 47 #define scr_memcpyw_to memcpy
 48
 49 externunsigned long vgacon_remap_base;
 50 #define VGA_MAP_MEM(x) (x + vgacon_remap_base)
 51 #define vga_readb(x) (*(x))
 52 #define vga_writeb(x,y) (*(y) = (x))
 53
 54 #endif