source: buchla-68k/include/io.h@ dade7a0

Last change on this file since dade7a0 was 4a17aeb, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Prototypes for I/O dispatch pointers.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1/*
2 ============================================================================
3 io.h -- Buchla 700 I/O library definitions
4 Version 12 -- 1987-09-25 -- D.N. Lynx Crowe
5 ============================================================================
6*/
7
8#pragma once
9
10#include "fspars.h" /* file system parameters */
11#include "stdint.h"
12
13struct devtabl;
14struct channel;
15
16typedef int16_t (*chclo)(io_arg arg);
17typedef int16_t (*devop)(int8_t *name, int16_t flag, int16_t mode, struct channel *chp, struct devtabl *dp);
18
19struct channel { /* channel table entry */
20
21 int8_t c_read; /* read routine index */
22 int8_t c_write; /* write routine index */
23 int8_t c_ioctl; /* ioctl routine index */
24 int8_t c_seek; /* seek routine index */
25 chclo c_close; /* close function pointer */
26 io_arg c_arg; /* argument to channel driver */
27};
28
29struct device { /* device control structure */
30
31 int8_t d_read; /* read routine code */
32 int8_t d_write; /* write routine code */
33 int8_t d_ioctl; /* ioctl routine code */
34 int8_t d_seek; /* seek routine code */
35 devop d_open; /* special open function */
36};
37
38struct devtabl { /* device table entry */
39
40 int8_t *d_name; /* device name */
41 struct device *d_dev; /* pointer to device structure */
42 io_arg d_arg; /* argument to device driver */
43};
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