projects / mirror_ubuntu-kernels.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | /* |
| 3 | * Access to VGA videoram | |
| 4 | * | |
| 5 | * (c) 1998 Martin Mares <mj@ucw.cz> | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _LINUX_ASM_VGA_H_ | |
| 9 | #define _LINUX_ASM_VGA_H_ | |
| 10 | ||
| 11 | #include <asm/io.h> | |
| 12 | ||
| 13 | #define VT_BUF_HAVE_RW | |
| 14 | #define VT_BUF_HAVE_MEMSETW | |
| 15 | #define VT_BUF_HAVE_MEMCPYW | |
| 16 | ||
| d559d4a2 | 17 | static inline void scr_writew(u16 val, volatile u16 *addr) |
| 1da177e4 LT |
18 | { |
| 19 | if (__is_ioaddr(addr)) | |
| 20 | __raw_writew(val, (volatile u16 __iomem *) addr); | |
| 21 | else | |
| 22 | *addr = val; | |
| 23 | } | |
| 24 | ||
| d559d4a2 | 25 | static inline u16 scr_readw(volatile const u16 *addr) |
| 1da177e4 LT |
26 | { |
| 27 | if (__is_ioaddr(addr)) | |
| 28 | return __raw_readw((volatile const u16 __iomem *) addr); | |
| 29 | else | |
| 30 | return *addr; | |
| 31 | } | |
| 32 | ||
| d559d4a2 | 33 | static inline void scr_memsetw(u16 *s, u16 c, unsigned int count) |
| 1da177e4 LT |
34 | { |
| 35 | if (__is_ioaddr(s)) | |
| 36 | memsetw_io((u16 __iomem *) s, c, count); | |
| 37 | else | |
| 92ce4c3e | 38 | memset16(s, c, count / 2); |
| 1da177e4 LT |
39 | } |
| 40 | ||
| 41 | /* Do not trust that the usage will be correct; analyze the arguments. */ | |
| 42 | extern void scr_memcpyw(u16 *d, const u16 *s, unsigned int count); | |
| 43 | ||
| 44 | /* ??? These are currently only used for downloading character sets. As | |
| 45 | such, they don't need memory barriers. Is this all they are intended | |
| 46 | to be used for? */ | |
| 47 | #define vga_readb(a) readb((u8 __iomem *)(a)) | |
| 48 | #define vga_writeb(v,a) writeb(v, (u8 __iomem *)(a)) | |
| 49 | ||
| 025a2215 JE |
50 | #ifdef CONFIG_VGA_HOSE |
| 51 | #include <linux/ioport.h> | |
| 52 | #include <linux/pci.h> | |
| 53 | ||
| 54 | extern struct pci_controller *pci_vga_hose; | |
| 55 | ||
| 56 | # define __is_port_vga(a) \ | |
| 57 | (((a) >= 0x3b0) && ((a) < 0x3e0) && \ | |
| 58 | ((a) != 0x3b3) && ((a) != 0x3d3)) | |
| 59 | ||
| 60 | # define __is_mem_vga(a) \ | |
| 61 | (((a) >= 0xa0000) && ((a) <= 0xc0000)) | |
| 62 | ||
| 63 | # define FIXUP_IOADDR_VGA(a) do { \ | |
| 64 | if (pci_vga_hose && __is_port_vga(a)) \ | |
| 65 | (a) += pci_vga_hose->io_space->start; \ | |
| 66 | } while(0) | |
| 67 | ||
| 68 | # define FIXUP_MEMADDR_VGA(a) do { \ | |
| 69 | if (pci_vga_hose && __is_mem_vga(a)) \ | |
| 70 | (a) += pci_vga_hose->mem_space->start; \ | |
| 71 | } while(0) | |
| 72 | ||
| 73 | #else /* CONFIG_VGA_HOSE */ | |
| 74 | # define pci_vga_hose 0 | |
| 75 | # define __is_port_vga(a) 0 | |
| 76 | # define __is_mem_vga(a) 0 | |
| 77 | # define FIXUP_IOADDR_VGA(a) | |
| 78 | # define FIXUP_MEMADDR_VGA(a) | |
| 79 | #endif /* CONFIG_VGA_HOSE */ | |
| 80 | ||
| 4f1bcaf0 | 81 | #define VGA_MAP_MEM(x,s) ((unsigned long) ioremap(x, s)) |
| 1da177e4 LT |
82 | |
| 83 | #endif |