Eric Lee / smarc-fsl-linux-kernel

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include/asm-alpha/vga.h 1.96 KB
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1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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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
  
  extern inline void scr_writew(u16 val, volatile u16 *addr)
  {
  	if (__is_ioaddr(addr))
  		__raw_writew(val, (volatile u16 __iomem *) addr);
  	else
  		*addr = val;
  }
  
  extern inline u16 scr_readw(volatile const u16 *addr)
  {
  	if (__is_ioaddr(addr))
  		return __raw_readw((volatile const u16 __iomem *) addr);
  	else
  		return *addr;
  }
  
  extern 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))
025a22151   Jay Estabrook   ALPHA: support gr... 
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  #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 */
4f1bcaf09   Bjorn Helgaas   [PATCH] vgacon: m... 
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  #define VGA_MAP_MEM(x,s)	((unsigned long) ioremap(x, s))
1da177e4c   Linus Torvalds   Linux-2.6.12-rc2 
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  #endif