patch-1.3.94 linux/include/linux/lp_m68k.h

• Lines: 110
• Date: Thu Mar 14 22:38:20 1996
• Orig file: v1.3.93/linux/include/linux/lp_m68k.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.93/linux/include/linux/lp_m68k.h linux/include/linux/lp_m68k.h
@@ -0,0 +1,109 @@
+#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
+ */
+
+#include <linux/autoconf.h>
+#include <asm/bootinfo.h>
+
+/*
+ * 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*/
+
+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_my_interrupt)(int);
+	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 */
+	char lp_buffer[LP_BUFFER_SIZE];
+	int do_print;
+	unsigned long copy_size,bytes_written;
+};
+
+extern struct lp_struct lp_table[];
+
+extern int lp_init(void);
+
+#endif