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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 |