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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * usr/include/linux/lp.h c.1991-1992 James Wiegand4 * many modifications copyright (C) 1992 Michael K. Johnson5 * Interrupt support added 1993 Nigel Gamble6 * Removed 8255 status defines from inside __KERNEL__ Marcelo Tosatti 7 */8#ifndef _UAPI_LINUX_LP_H9#define _UAPI_LINUX_LP_H10 11#include <linux/types.h>12#include <linux/ioctl.h>13 14/*15 * Per POSIX guidelines, this module reserves the LP and lp prefixes16 * These are the lp_table[minor].flags flags...17 */18#define LP_EXIST 0x000119#define LP_SELEC 0x000220#define LP_BUSY 0x000421#define LP_BUSY_BIT_POS 222#define LP_OFFL 0x000823#define LP_NOPA 0x001024#define LP_ERR 0x002025#define LP_ABORT 0x004026#define LP_CAREFUL 0x0080 /* obsoleted -arca */27#define LP_ABORTOPEN 0x010028 29#define LP_TRUST_IRQ_ 0x0200 /* obsolete */30#define LP_NO_REVERSE 0x0400 /* No reverse mode available. */31#define LP_DATA_AVAIL 0x0800 /* Data is available. */32 33/* 34 * bit defines for 8255 status port35 * base + 136 * accessed with LP_S(minor), which gets the byte...37 */38#define LP_PBUSY 0x80 /* inverted input, active high */39#define LP_PACK 0x40 /* unchanged input, active low */40#define LP_POUTPA 0x20 /* unchanged input, active high */41#define LP_PSELECD 0x10 /* unchanged input, active high */42#define LP_PERRORP 0x08 /* unchanged input, active low */43 44/* timeout for each character. This is relative to bus cycles -- it45 * is the count in a busy loop. THIS IS THE VALUE TO CHANGE if you46 * have extremely slow printing, or if the machine seems to slow down47 * a lot when you print. If you have slow printing, increase this48 * number and recompile, and if your system gets bogged down, decrease49 * this number. This can be changed with the tunelp(8) command as well.50 */51 52#define LP_INIT_CHAR 100053 54/* The parallel port specs apparently say that there needs to be55 * a .5usec wait before and after the strobe.56 */57 58#define LP_INIT_WAIT 159 60/* This is the amount of time that the driver waits for the printer to61 * catch up when the printer's buffer appears to be filled. If you62 * want to tune this and have a fast printer (i.e. HPIIIP), decrease63 * this number, and if you have a slow printer, increase this number.64 * This is in hundredths of a second, the default 2 being .05 second.65 * Or use the tunelp(8) command, which is especially nice if you want66 * change back and forth between character and graphics printing, which67 * are wildly different...68 */69 70#define LP_INIT_TIME 271 72/* IOCTL numbers */73#define LPCHAR 0x0601 /* corresponds to LP_INIT_CHAR */74#define LPTIME 0x0602 /* corresponds to LP_INIT_TIME */75#define LPABORT 0x0604 /* call with TRUE arg to abort on error,76 FALSE to retry. Default is retry. */77#define LPSETIRQ 0x0605 /* call with new IRQ number,78 or 0 for polling (no IRQ) */79#define LPGETIRQ 0x0606 /* get the current IRQ number */80#define LPWAIT 0x0608 /* corresponds to LP_INIT_WAIT */81/* NOTE: LPCAREFUL is obsoleted and it' s always the default right now -arca */82#define LPCAREFUL 0x0609 /* call with TRUE arg to require out-of-paper, off-83 line, and error indicators good on all writes,84 FALSE to ignore them. Default is ignore. */85#define LPABORTOPEN 0x060a /* call with TRUE arg to abort open() on error,86 FALSE to ignore error. Default is ignore. */87#define LPGETSTATUS 0x060b /* return LP_S(minor) */88#define LPRESET 0x060c /* reset printer */89#ifdef LP_STATS90#define LPGETSTATS 0x060d /* get statistics (struct lp_stats) */91#endif92#define LPGETFLAGS 0x060e /* get status flags */93#define LPSETTIMEOUT_OLD 0x060f /* set parport timeout */94#define LPSETTIMEOUT_NEW \95 _IOW(0x6, 0xf, __s64[2]) /* set parport timeout */96#if __BITS_PER_LONG == 6497#define LPSETTIMEOUT LPSETTIMEOUT_OLD98#else99#define LPSETTIMEOUT (sizeof(time_t) > sizeof(__kernel_long_t) ? \100 LPSETTIMEOUT_NEW : LPSETTIMEOUT_OLD)101#endif102 103/* timeout for printk'ing a timeout, in jiffies (100ths of a second).104 This is also used for re-checking error conditions if LP_ABORT is105 not set. This is the default behavior. */106 107#define LP_TIMEOUT_INTERRUPT (60 * HZ)108#define LP_TIMEOUT_POLLED (10 * HZ)109 110 111#endif /* _UAPI_LINUX_LP_H */112