| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 */ |