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/*
* Access to VGA videoram
*
* (c) 1998 Martin Mares <mj@ucw.cz>
*/
#ifndef _LINUX_ASM_VGA_H_
#define _LINUX_ASM_VGA_H_
#include <asm/io.h>
#define VT_BUF_HAVE_RW
#define VT_BUF_HAVE_MEMSETW
#define VT_BUF_HAVE_MEMCPYW
static inline void scr_writew(u16 val, volatile u16 *addr)
{
if (__is_ioaddr(addr))
__raw_writew(val, (volatile u16 __iomem *) addr);
else
*addr = val;
}
static inline u16 scr_readw(volatile const u16 *addr)
{
if (__is_ioaddr(addr))
return __raw_readw((volatile const u16 __iomem *) addr);
else
return *addr;
}
static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
{
if (__is_ioaddr(s))
memsetw_io((u16 __iomem *) s, c, count);
else
memsetw(s, c, count);
}
/* Do not trust that the usage will be correct; analyze the arguments. */
extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count);
/* ??? These are currently only used for downloading character sets. As
such, they don't need memory barriers. Is this all they are intended
to be used for? */
#define vga_readb(a) readb((u8 __iomem *)(a))
#define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a))
#ifdef CONFIG_VGA_HOSE
#include <linux/ioport.h>
#include <linux/pci.h>
extern struct pci_controller *pci_vga_hose;
# define __is_port_vga(a) \
(((a) >= 0x3b0) && ((a) < 0x3e0) && \
((a) != 0x3b3) && ((a) != 0x3d3))
# define __is_mem_vga(a) \
(((a) >= 0xa0000) && ((a) <= 0xc0000))
# define FIXUP_IOADDR_VGA(a) do { \
if (pci_vga_hose && __is_port_vga(a)) \
(a) += pci_vga_hose->io_space->start; \
} while(0)
# define FIXUP_MEMADDR_VGA(a) do { \
if (pci_vga_hose && __is_mem_vga(a)) \
(a) += pci_vga_hose->mem_space->start; \
} while(0)
#else /* CONFIG_VGA_HOSE */
# define pci_vga_hose 0
# define __is_port_vga(a) 0
# define __is_mem_vga(a) 0
# define FIXUP_IOADDR_VGA(a)
# define FIXUP_MEMADDR_VGA(a)
#endif /* CONFIG_VGA_HOSE */
#define VGA_MAP_MEM(x,s) ((unsigned long) ioremap(x, s))
#endif