projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 12 | #define VT_BUF_HAVE_RW | |
| 13 | #define VT_BUF_HAVE_MEMSETW | |
| 14 | #define VT_BUF_HAVE_MEMCPYW | |
| 15 | ||
| 16 | extern inline void scr_writew(u16 val, volatile u16 *addr) | |
| 17 | { | |
| 18 | if (__is_ioaddr(addr)) | |
| 19 | __raw_writew(val, (volatile u16 __iomem *) addr); | |
| 20 | else | |
| 21 | *addr = val; | |
| 22 | } | |
| 23 | ||
| 24 | extern inline u16 scr_readw(volatile const u16 *addr) | |
| 25 | { | |
| 26 | if (__is_ioaddr(addr)) | |
| 27 | return __raw_readw((volatile const u16 __iomem *) addr); | |
| 28 | else | |
| 29 | return *addr; | |
| 30 | } | |
| 31 | ||
| 32 | extern inline void scr_memsetw(u16 *s, u16 c, unsigned int count) | |
| 33 | { | |
| 34 | if (__is_ioaddr(s)) | |
| 35 | memsetw_io((u16 __iomem *) s, c, count); | |
| 36 | else | |
| 37 | memsetw(s, c, count); | |
| 38 | } | |
| 39 | ||
| 40 | /* Do not trust that the usage will be correct; analyze the arguments. */ | |
| 41 | extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count); | |
| 42 | ||
| 43 | /* ??? These are currently only used for downloading character sets. As | |
| 44 | such, they don't need memory barriers. Is this all they are intended | |
| 45 | to be used for? */ | |
| 46 | #define vga_readb(a) readb((u8 __iomem *)(a)) | |
| 47 | #define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a)) | |
| 48 | ||
| 025a2215 JE |
49 | #ifdef CONFIG_VGA_HOSE |
| 50 | #include <linux/ioport.h> | |
| 51 | #include <linux/pci.h> | |
| 52 | ||
| 53 | extern struct pci_controller *pci_vga_hose; | |
| 54 | ||
| 55 | # define __is_port_vga(a) \ | |
| 56 | (((a) >= 0x3b0) && ((a) < 0x3e0) && \ | |
| 57 | ((a) != 0x3b3) && ((a) != 0x3d3)) | |
| 58 | ||
| 59 | # define __is_mem_vga(a) \ | |
| 60 | (((a) >= 0xa0000) && ((a) <= 0xc0000)) | |
| 61 | ||
| 62 | # define FIXUP_IOADDR_VGA(a) do { \ | |
| 63 | if (pci_vga_hose && __is_port_vga(a)) \ | |
| 64 | (a) += pci_vga_hose->io_space->start; \ | |
| 65 | } while(0) | |
| 66 | ||
| 67 | # define FIXUP_MEMADDR_VGA(a) do { \ | |
| 68 | if (pci_vga_hose && __is_mem_vga(a)) \ | |
| 69 | (a) += pci_vga_hose->mem_space->start; \ | |
| 70 | } while(0) | |
| 71 | ||
| 72 | #else /* CONFIG_VGA_HOSE */ | |
| 73 | # define pci_vga_hose 0 | |
| 74 | # define __is_port_vga(a) 0 | |
| 75 | # define __is_mem_vga(a) 0 | |
| 76 | # define FIXUP_IOADDR_VGA(a) | |
| 77 | # define FIXUP_MEMADDR_VGA(a) | |
| 78 | #endif /* CONFIG_VGA_HOSE */ | |
| 79 | ||
| 4f1bcaf0 | 80 | #define VGA_MAP_MEM(x,s) ((unsigned long) ioremap(x, s)) |
| 1da177e4 LT |
81 | |
| 82 | #endif |