add directory Linux-0.98

Linux-0.98/Yggdrasil-0.98.3/usr/include/linux/lp.h

@@ -0,0 +1,138 @@
+#ifndef _LINUX_LP_H
+#define _LINUX_LP_H
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/io.h>
+#include <asm/segment.h>
+
+/*
+ * usr/include/linux/lp.h c.1991-1992 James Wiegand
+ * many modifications copyright (C) 1992 Michael K. Johnson
+ */
+
+/*
+ * caveat: my machine only has 1 printer @ lpt2 so lpt1 & lpt3 are 
+ * implemented but UNTESTED
+ *
+ * My machine (Michael K. Johnson) has only lpt1...  dupla caveat...
+ */
+
+/*
+ * 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_SELEC 0x0002
+#define LP_BUSY	 0x0004
+#define LP_OFFL	 0x0008
+#define LP_NOPA  0x0010
+#define LP_ERR   0x0020
+
+/* timeout for each character  (This is a good case 50 Mhz computer
+   at a poor case 10 KBS xfer rate to the printer, as best as I can
+   tell.)  This is in instruction cycles, kinda -- 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.*/
+#define LP_TIME_CHAR 5000
+
+/* timeout for printk'ing a timeout, in jiffies (100ths of a second).
+   If your printer isn't printing at least one character every five seconds,
+   you have worse problems than a slow printer driver and lp_timeout printed
+   every five seconds while trying to print. */
+#define LP_TIMEOUT 5000
+
+#define LP_B(minor)	lp_table[(minor)].base		/* IO address */
+#define LP_F(minor)	lp_table[(minor)].flags		/* flags for busy, etc. */
+#define LP_S(minor)	inb(LP_B((minor)) + 1)		/* status port */
+#define LP_C(minor)	(lp_table[(minor)].base + 2)	/* control port */
+#define LP_COUNT(minor)	lp_table[(minor)].count		/* last count */
+#define LP_TIME(minor)	lp_table[(minor)].time		/* last time */
+
+/* 
+since we are dealing with a horribly slow device
+I don't see the need for a queue
+*/
+struct lp_struct {
+	int base;
+	int flags;
+	int count;
+	int time;
+};
+
+/* This is the starting value for the heuristic algorithm.  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 not stricly necessary, as the algorithm should be able to
+ * adapt to your printer relatively quickly.
+ * this is in hundredths of a second, the default 50 being .5 seconds.
+ */
+
+#define LP_INIT_TIME 50
+
+/* This is our first guess at the size of the buffer on the printer,
+ * in characters.  I am assuming a 4K buffer because most newer printers
+ * have larger ones, which will be adapted to.  At this time, it really
+ * doesn't matter, as this value isn't used.
+ */
+
+#define LP_INIT_COUNT 4096
+
+/* the BIOS manuals say there can be up to 4 lpt devices
+ * but I have not seen a board where the 4th address is listed
+ * if you have different hardware change the table below 
+ * please let me know if you have different equipment
+ * if you have more than 3 printers, remember to increase LP_NO
+ */
+struct lp_struct lp_table[] = {
+	{ 0x3bc, 0, LP_INIT_COUNT, LP_INIT_TIME, },
+	{ 0x378, 0, LP_INIT_COUNT, LP_INIT_TIME, },
+	{ 0x278, 0, LP_INIT_COUNT, LP_INIT_TIME, }
+}; 
+#define LP_NO 3
+
+/* 
+ * bit defines for 8255 status port
+ * base + 1
+ * accessed with LP_S(minor), which gets the byte...
+ */
+#define LP_PBUSY	0x80 /* active low */
+#define LP_PACK		0x40 /* active low */
+#define LP_POUTPA	0x20
+#define LP_PSELECD	0x10
+#define LP_PERRORP	0x08 /* active low*/
+
+/* 
+ * defines for 8255 control port
+ * base + 2 
+ * accessed with LP_C(minor)
+ */
+#define LP_PSELECP	0x08
+#define LP_PINITP	0x04  /* active low */
+#define LP_PAUTOLF	0x02
+#define LP_PSTROBE	0x01
+
+/* 
+ * the value written to ports to test existence. PC-style ports will 
+ * return the value written. AT-style ports will return 0. so why not
+ * make them the same ? 
+ */
+#define LP_DUMMY	0x00
+
+/*
+ * This is the port delay time.  Your mileage may vary.
+ * It is used only in the lp_init() routine.
+ */
+#define LP_DELAY 	150000
+
+/*
+ * function prototypes
+ */
+
+extern long lp_init(long);
+
+#endif