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