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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
607ca46e DH |
2 | /* |
3 | * usr/include/linux/lp.h c.1991-1992 James Wiegand | |
4 | * many modifications copyright (C) 1992 Michael K. Johnson | |
5 | * Interrupt support added 1993 Nigel Gamble | |
6 | * Removed 8255 status defines from inside __KERNEL__ Marcelo Tosatti | |
7 | */ | |
8 | #ifndef _UAPI_LINUX_LP_H | |
9 | #define _UAPI_LINUX_LP_H | |
10 | ||
11 | ||
12 | /* | |
13 | * Per POSIX guidelines, this module reserves the LP and lp prefixes | |
14 | * These are the lp_table[minor].flags flags... | |
15 | */ | |
16 | #define LP_EXIST 0x0001 | |
17 | #define LP_SELEC 0x0002 | |
18 | #define LP_BUSY 0x0004 | |
19 | #define LP_BUSY_BIT_POS 2 | |
20 | #define LP_OFFL 0x0008 | |
21 | #define LP_NOPA 0x0010 | |
22 | #define LP_ERR 0x0020 | |
23 | #define LP_ABORT 0x0040 | |
24 | #define LP_CAREFUL 0x0080 /* obsoleted -arca */ | |
25 | #define LP_ABORTOPEN 0x0100 | |
26 | ||
27 | #define LP_TRUST_IRQ_ 0x0200 /* obsolete */ | |
28 | #define LP_NO_REVERSE 0x0400 /* No reverse mode available. */ | |
29 | #define LP_DATA_AVAIL 0x0800 /* Data is available. */ | |
30 | ||
31 | /* | |
32 | * bit defines for 8255 status port | |
33 | * base + 1 | |
34 | * accessed with LP_S(minor), which gets the byte... | |
35 | */ | |
36 | #define LP_PBUSY 0x80 /* inverted input, active high */ | |
37 | #define LP_PACK 0x40 /* unchanged input, active low */ | |
38 | #define LP_POUTPA 0x20 /* unchanged input, active high */ | |
39 | #define LP_PSELECD 0x10 /* unchanged input, active high */ | |
40 | #define LP_PERRORP 0x08 /* unchanged input, active low */ | |
41 | ||
42 | /* timeout for each character. This is relative to bus cycles -- it | |
43 | * is the count in a busy loop. THIS IS THE VALUE TO CHANGE if you | |
44 | * have extremely slow printing, or if the machine seems to slow down | |
45 | * a lot when you print. If you have slow printing, increase this | |
46 | * number and recompile, and if your system gets bogged down, decrease | |
47 | * this number. This can be changed with the tunelp(8) command as well. | |
48 | */ | |
49 | ||
50 | #define LP_INIT_CHAR 1000 | |
51 | ||
52 | /* The parallel port specs apparently say that there needs to be | |
53 | * a .5usec wait before and after the strobe. | |
54 | */ | |
55 | ||
56 | #define LP_INIT_WAIT 1 | |
57 | ||
58 | /* This is the amount of time that the driver waits for the printer to | |
59 | * catch up when the printer's buffer appears to be filled. If you | |
60 | * want to tune this and have a fast printer (i.e. HPIIIP), decrease | |
61 | * this number, and if you have a slow printer, increase this number. | |
62 | * This is in hundredths of a second, the default 2 being .05 second. | |
63 | * Or use the tunelp(8) command, which is especially nice if you want | |
64 | * change back and forth between character and graphics printing, which | |
65 | * are wildly different... | |
66 | */ | |
67 | ||
68 | #define LP_INIT_TIME 2 | |
69 | ||
70 | /* IOCTL numbers */ | |
71 | #define LPCHAR 0x0601 /* corresponds to LP_INIT_CHAR */ | |
72 | #define LPTIME 0x0602 /* corresponds to LP_INIT_TIME */ | |
73 | #define LPABORT 0x0604 /* call with TRUE arg to abort on error, | |
74 | FALSE to retry. Default is retry. */ | |
75 | #define LPSETIRQ 0x0605 /* call with new IRQ number, | |
76 | or 0 for polling (no IRQ) */ | |
77 | #define LPGETIRQ 0x0606 /* get the current IRQ number */ | |
78 | #define LPWAIT 0x0608 /* corresponds to LP_INIT_WAIT */ | |
79 | /* NOTE: LPCAREFUL is obsoleted and it' s always the default right now -arca */ | |
80 | #define LPCAREFUL 0x0609 /* call with TRUE arg to require out-of-paper, off- | |
81 | line, and error indicators good on all writes, | |
82 | FALSE to ignore them. Default is ignore. */ | |
83 | #define LPABORTOPEN 0x060a /* call with TRUE arg to abort open() on error, | |
84 | FALSE to ignore error. Default is ignore. */ | |
85 | #define LPGETSTATUS 0x060b /* return LP_S(minor) */ | |
86 | #define LPRESET 0x060c /* reset printer */ | |
87 | #ifdef LP_STATS | |
88 | #define LPGETSTATS 0x060d /* get statistics (struct lp_stats) */ | |
89 | #endif | |
90 | #define LPGETFLAGS 0x060e /* get status flags */ | |
91 | #define LPSETTIMEOUT 0x060f /* set parport timeout */ | |
92 | ||
93 | /* timeout for printk'ing a timeout, in jiffies (100ths of a second). | |
94 | This is also used for re-checking error conditions if LP_ABORT is | |
95 | not set. This is the default behavior. */ | |
96 | ||
97 | #define LP_TIMEOUT_INTERRUPT (60 * HZ) | |
98 | #define LP_TIMEOUT_POLLED (10 * HZ) | |
99 | ||
100 | ||
101 | #endif /* _UAPI_LINUX_LP_H */ |