File: /usr/src/linux/drivers/cdrom/optcd.h
1 /* linux/include/linux/optcd.h - Optics Storage 8000 AT CDROM driver
2 $Id: optcd.h,v 1.2 1996/01/15 18:43:44 root Exp root $
3
4 Copyright (C) 1995 Leo Spiekman (spiekman@dutette.et.tudelft.nl)
5
6
7 Configuration file for linux/drivers/cdrom/optcd.c
8 */
9
10 #ifndef _LINUX_OPTCD_H
11 #define _LINUX_OPTCD_H
12
13
14 /* I/O base of drive. Drive uses base to base+2.
15 This setting can be overridden with the kernel or insmod command
16 line option 'optcd=<portbase>'. Use address of 0 to disable driver. */
17 #define OPTCD_PORTBASE 0x340
18
19
20 /* enable / disable parts of driver by define / undef */
21 #define MULTISESSION /* multisession support (ALPHA) */
22
23
24 /* Change 0 to 1 to debug various parts of the driver */
25 #define DEBUG_DRIVE_IF 0 /* Low level drive interface */
26 #define DEBUG_CONV 0 /* Address conversions */
27 #define DEBUG_BUFFERS 0 /* Buffering and block size conversion */
28 #define DEBUG_REQUEST 0 /* Request mechanism */
29 #define DEBUG_STATE 0 /* State machine */
30 #define DEBUG_TOC 0 /* Q-channel and Table of Contents */
31 #define DEBUG_MULTIS 0 /* Multisession code */
32 #define DEBUG_VFS 0 /* VFS interface */
33
34
35 /* Don't touch these unless you know what you're doing. */
36
37 /* Various timeout loop repetition counts. */
38 #define BUSY_TIMEOUT 10000000 /* for busy wait */
39 #define FAST_TIMEOUT 100000 /* ibid. for probing */
40 #define SLEEP_TIMEOUT 6000 /* for timer wait */
41 #define MULTI_SEEK_TIMEOUT 1000 /* for timer wait */
42 #define READ_TIMEOUT 6000 /* for poll wait */
43 #define STOP_TIMEOUT 2000 /* for poll wait */
44 #define RESET_WAIT 5000 /* busy wait at drive reset */
45
46 /* # of buffers for block size conversion. 6 is optimal for my setup (P75),
47 giving 280 kb/s, with 0.4% CPU usage. Experiment to find your optimal
48 setting */
49 #define N_BUFS 6
50
51
52 #endif /* _LINUX_OPTCD_H */
53