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- #ifndef _LINUX_LP_H
- #define _LINUX_LP_H
-
- /*
- * split in two parts by Joerg Dorchain
- * usr/include/linux/lp.h modified for Amiga by Michael Rausch
- * modified for Atari by Andreas Schwab
- * bug fixed by Jes Sorensen 18/8-94:
- * It was not possible to compile the kernel only for Atari or Amiga.
- *
- * linux i386 version c.1991-1992 James Wiegand
- * many modifications copyright (C) 1992 Michael K. Johnson
- * Interrupt support added 1993 Nigel Gamble
- */
-
- /*
- * many many printers are we going to support? currently, this is the
- * hardcoded limit
- */
- #define MAX_LP 5
-
- /*
- * Per POSIX guidelines, this module reserves the LP and lp prefixes
- * These are the lp_table[minor].flags flags...
- */
- #define LP_EXIST 0x0001
- #define LP_BUSY 0x0004
- #define LP_ABORT 0x0040
- #define LP_CAREFUL 0x0080
- #define LP_ABORTOPEN 0x0100
-
- /* timeout for each character. This is relative to bus cycles -- it
- * is the count in a busy loop. THIS IS THE VALUE TO CHANGE if you
- * have extremely slow printing, or if the machine seems to slow down
- * a lot when you print. If you have slow printing, increase this
- * number and recompile, and if your system gets bogged down, decrease
- * this number. This can be changed with the tunelp(8) command as well.
- */
-
- #define LP_INIT_CHAR 1000
-
- /* The parallel port specs apparently say that there needs to be
- * a .5usec wait before and after the strobe. Since there are wildly
- * different computers running linux, I can't come up with a perfect
- * value, but since it worked well on most printers before without,
- * I'll initialize it to 0.
- */
-
- #define LP_INIT_WAIT 0
-
- /* This is the amount of time that the driver waits for the printer to
- * catch up when the printer's buffer appears to be filled. If you
- * want to tune this and have a fast printer (i.e. HPIIIP), decrease
- * this number, and if you have a slow printer, increase this number.
- * This is in hundredths of a second, the default 2 being .05 second.
- * Or use the tunelp(8) command, which is especially nice if you want
- * change back and forth between character and graphics printing, which
- * are wildly different...
- */
-
- #define LP_INIT_TIME 40
-
- /* IOCTL numbers */
- #define LPCHAR 0x0601 /* corresponds to LP_INIT_CHAR */
- #define LPTIME 0x0602 /* corresponds to LP_INIT_TIME */
- #define LPABORT 0x0604 /* call with TRUE arg to abort on error,
- FALSE to retry. Default is retry. */
- #define LPSETIRQ 0x0605 /* call with new IRQ number,
- or 0 for polling (no IRQ) */
- #define LPGETIRQ 0x0606 /* get the current IRQ number */
- #define LPWAIT 0x0608 /* corresponds to LP_INIT_WAIT */
- #define LPCAREFUL 0x0609 /* call with TRUE arg to require out-of-paper, off-
- line, and error indicators good on all writes,
- FALSE to ignore them. Default is ignore. */
- #define LPABORTOPEN 0x060a /* call with TRUE arg to abort open() on error,
- FALSE to ignore error. Default is ignore. */
- #define LPGETSTATUS 0x060b /* return LP_S(minor) */
- #define LPRESET 0x060c /* reset printer */
-
- /* timeout for printk'ing a timeout, in jiffies (100ths of a second).
- This is also used for re-checking error conditions if LP_ABORT is
- not set. This is the default behavior. */
-
- #define LP_TIMEOUT_INTERRUPT (60 * HZ)
- #define LP_TIMEOUT_POLLED (10 * HZ)
-
-
- #define LP_BUFFER_SIZE 1024 /*256*/
-
- enum lp_type {
- LP_UNKNOWN = 0,
- LP_AMIGA = 1,
- LP_ATARI = 2,
- LP_MFC = 3,
- LP_IOEXT = 4,
- LP_MVME167 = 5,
- LP_BVME6000 = 6
- };
-
- /*
- * warning: this structure is in kernel space and has to fit in one page,
- * i.e. must not be larger than 4k
- */
- struct lp_struct {
- char *name;
- unsigned int irq;
- void (*lp_out)(int,int); /*output char function*/
- int (*lp_is_busy)(int);
- int (*lp_has_pout)(int);
- int (*lp_is_online)(int);
- int (*lp_dummy)(int);
- int (*lp_ioctl)(int, unsigned int, unsigned long);
- int (*lp_open)(int); /* for module use counter */
- void (*lp_release)(int); /* for module use counter */
- int flags; /*for BUSY... */
- unsigned int chars; /*busy timeout */
- unsigned int time; /*wait time */
- unsigned int wait;
- struct wait_queue *lp_wait_q; /*strobe wait */
- void *base; /* hardware drivers internal use*/
- enum lp_type type;
- char lp_buffer[LP_BUFFER_SIZE];
- int do_print;
- unsigned long copy_size,bytes_written;
- };
-
- extern struct lp_struct *lp_table[MAX_LP];
- extern unsigned int lp_irq;
-
- void lp_interrupt(int dev);
- int lp_m68k_init(void);
- int register_parallel(struct lp_struct *, int);
- void unregister_parallel(int);
-
- #endif
-