diff options
Diffstat (limited to 'arch/alpha/kernel/io.c')
| -rw-r--r-- | arch/alpha/kernel/io.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/alpha/kernel/io.c b/arch/alpha/kernel/io.c index eda09778268f..c28035d6d1e6 100644 --- a/arch/alpha/kernel/io.c +++ b/arch/alpha/kernel/io.c @@ -647,6 +647,10 @@ void _memset_c_io(volatile void __iomem *to, unsigned long c, long count) EXPORT_SYMBOL(_memset_c_io); +#if IS_ENABLED(CONFIG_VGA_CONSOLE) || IS_ENABLED(CONFIG_MDA_CONSOLE) + +#include <asm/vga.h> + /* A version of memcpy used by the vga console routines to move data around arbitrarily between screen and main memory. */ @@ -681,6 +685,21 @@ scr_memcpyw(u16 *d, const u16 *s, unsigned int count) EXPORT_SYMBOL(scr_memcpyw); +void scr_memmovew(u16 *d, const u16 *s, unsigned int count) +{ + if (d < s) + scr_memcpyw(d, s, count); + else { + count /= 2; + d += count; + s += count; + while (count--) + scr_writew(scr_readw(--s), --d); + } +} +EXPORT_SYMBOL(scr_memmovew); +#endif + void __iomem *ioport_map(unsigned long port, unsigned int size) { return IO_CONCAT(__IO_PREFIX,ioportmap) (port); |