Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
||
| 3 | * Date: 1.6.2000 |
||
| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
||
| 5 | * |
||
| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
||
| 7 | * low-level infrastructure for developing OS kernels and Embedded |
||
| 8 | * Applications; it partially derives from the HARTIK project but it |
||
| 9 | * currently is independently developed. |
||
| 10 | * |
||
| 11 | * OSLib is distributed under GPL License, and some of its code has |
||
| 12 | * been derived from the Linux kernel source; also some important |
||
| 13 | * ideas come from studying the DJGPP go32 extender. |
||
| 14 | * |
||
| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
||
| 16 | * D.J. Delorie and all the other developers who believe in the |
||
| 17 | * freedom of software and ideas. |
||
| 18 | * |
||
| 19 | * For legalese, check out the included GPL license. |
||
| 20 | */ |
||
| 21 | |||
| 22 | /* The hw I/O instructions |
||
| 23 | Never include this file!!! Include hw-instr.h instead!!! */ |
||
| 24 | #ifndef __LL_I386_HW_IO_H__ |
||
| 25 | #define __LL_I386_HW_IO_H__ |
||
| 26 | |||
| 27 | #include <ll/i386/defs.h> |
||
| 28 | BEGIN_DEF |
||
| 29 | |||
| 30 | |||
| 31 | /* |
||
| 32 | The code for inp, outp, inpw, outpw, inpd & outpd is from |
||
| 33 | standard GNU C distribution! |
||
| 34 | The full source code for the GNU-C distribution is available |
||
| 35 | from www.delorie.com |
||
| 36 | |||
| 37 | The following code is ... |
||
| 38 | copyright (C) 1995 DJ Delorie, see COPYING.DJ for details |
||
| 39 | */ |
||
| 40 | |||
| 41 | INLINE_OP unsigned char inp(unsigned short _port) |
||
| 42 | { |
||
| 43 | unsigned char rv; |
||
| 44 | __asm__ __volatile__ ("inb %1, %0" |
||
| 45 | : "=a" (rv) |
||
| 46 | : "d" (_port)); |
||
| 47 | return(rv); |
||
| 48 | } |
||
| 49 | |||
| 50 | INLINE_OP unsigned short inpw (unsigned short _port) |
||
| 51 | { |
||
| 52 | unsigned short rv; |
||
| 53 | __asm__ __volatile__ ("inw %1, %0" |
||
| 54 | : "=a" (rv) |
||
| 55 | : "d" (_port)); |
||
| 56 | return(rv); |
||
| 57 | } |
||
| 58 | |||
| 59 | INLINE_OP unsigned long inpd(unsigned short _port) |
||
| 60 | { |
||
| 61 | unsigned long rv; |
||
| 62 | __asm__ __volatile__ ("inl %1, %0" |
||
| 63 | : "=a" (rv) |
||
| 64 | : "d" (_port)); |
||
| 65 | return(rv); |
||
| 66 | } |
||
| 67 | |||
| 68 | INLINE_OP void outp(unsigned short _port, unsigned char _data) |
||
| 69 | { |
||
| 70 | __asm__ __volatile__ ("outb %1, %0" |
||
| 71 | : |
||
| 72 | : "d" (_port), |
||
| 73 | "a" (_data)); |
||
| 74 | } |
||
| 75 | |||
| 76 | INLINE_OP void outpw(unsigned short _port, unsigned short _data) |
||
| 77 | { |
||
| 78 | __asm__ __volatile__ ("outw %1, %0" |
||
| 79 | : |
||
| 80 | : "d" (_port), |
||
| 81 | "a" (_data)); |
||
| 82 | } |
||
| 83 | |||
| 84 | INLINE_OP void outpd(unsigned short _port, unsigned long _data) |
||
| 85 | { |
||
| 86 | __asm__ __volatile__ ("outl %1, %0" |
||
| 87 | : |
||
| 88 | : "d" (_port), |
||
| 89 | "a" (_data)); |
||
| 90 | } |
||
| 91 | |||
| 92 | END_DEF |
||
| 93 | |||
| 94 | #endif |