Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/linux/lp.h b/include/linux/lp.h
new file mode 100644
index 0000000..7059b6b
--- /dev/null
+++ b/include/linux/lp.h
@@ -0,0 +1,191 @@
+#ifndef _LINUX_LP_H
+#define _LINUX_LP_H
+
+/*
+ * usr/include/linux/lp.h c.1991-1992 James Wiegand
+ * many modifications copyright (C) 1992 Michael K. Johnson
+ * Interrupt support added 1993 Nigel Gamble
+ * Removed 8255 status defines from inside __KERNEL__ Marcelo Tosatti
+ */
+
+/*
+ * 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_BUSY_BIT_POS 2
+#define LP_OFFL 0x0008
+#define LP_NOPA 0x0010
+#define LP_ERR 0x0020
+#define LP_ABORT 0x0040
+#define LP_CAREFUL 0x0080 /* obsoleted -arca */
+#define LP_ABORTOPEN 0x0100
+
+#define LP_TRUST_IRQ_ 0x0200 /* obsolete */
+#define LP_NO_REVERSE 0x0400 /* No reverse mode available. */
+#define LP_DATA_AVAIL 0x0800 /* Data is available. */
+
+/*
+ * bit defines for 8255 status port
+ * base + 1
+ * accessed with LP_S(minor), which gets the byte...
+ */
+#define LP_PBUSY 0x80 /* inverted input, active high */
+#define LP_PACK 0x40 /* unchanged input, active low */
+#define LP_POUTPA 0x20 /* unchanged input, active high */
+#define LP_PSELECD 0x10 /* unchanged input, active high */
+#define LP_PERRORP 0x08 /* unchanged input, active low */
+
+/* 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.
+ */
+
+#define LP_INIT_WAIT 1
+
+/* 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 2
+
+/* 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 */
+/* NOTE: LPCAREFUL is obsoleted and it' s always the default right now -arca */
+#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 */
+#ifdef LP_STATS
+#define LPGETSTATS 0x060d /* get statistics (struct lp_stats) */
+#endif
+#define LPGETFLAGS 0x060e /* get status flags */
+#define LPSETTIMEOUT 0x060f /* set parport timeout */
+
+/* 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)
+
+#ifdef __KERNEL__
+
+#include <linux/wait.h>
+#include <asm/semaphore.h>
+
+/* Magic numbers for defining port-device mappings */
+#define LP_PARPORT_UNSPEC -4
+#define LP_PARPORT_AUTO -3
+#define LP_PARPORT_OFF -2
+#define LP_PARPORT_NONE -1
+
+#define LP_F(minor) lp_table[(minor)].flags /* flags for busy, etc. */
+#define LP_CHAR(minor) lp_table[(minor)].chars /* busy timeout */
+#define LP_TIME(minor) lp_table[(minor)].time /* wait time */
+#define LP_WAIT(minor) lp_table[(minor)].wait /* strobe wait */
+#define LP_IRQ(minor) lp_table[(minor)].dev->port->irq /* interrupt # */
+ /* PARPORT_IRQ_NONE means polled */
+#ifdef LP_STATS
+#define LP_STAT(minor) lp_table[(minor)].stats /* statistics area */
+#endif
+#define LP_BUFFER_SIZE PAGE_SIZE
+
+#define LP_BASE(x) lp_table[(x)].dev->port->base
+
+#ifdef LP_STATS
+struct lp_stats {
+ unsigned long chars;
+ unsigned long sleeps;
+ unsigned int maxrun;
+ unsigned int maxwait;
+ unsigned int meanwait;
+ unsigned int mdev;
+};
+#endif
+
+struct lp_struct {
+ struct pardevice *dev;
+ unsigned long flags;
+ unsigned int chars;
+ unsigned int time;
+ unsigned int wait;
+ char *lp_buffer;
+#ifdef LP_STATS
+ unsigned int lastcall;
+ unsigned int runchars;
+ struct lp_stats stats;
+#endif
+ wait_queue_head_t waitq;
+ unsigned int last_error;
+ struct semaphore port_mutex;
+ wait_queue_head_t dataq;
+ long timeout;
+ unsigned int best_mode;
+ unsigned int current_mode;
+ unsigned long bits;
+};
+
+/*
+ * The following constants describe the various signals of the printer port
+ * hardware. Note that the hardware inverts some signals and that some
+ * signals are active low. An example is LP_STROBE, which must be programmed
+ * with 1 for being active and 0 for being inactive, because the strobe signal
+ * gets inverted, but it is also active low.
+ */
+
+
+/*
+ * defines for 8255 control port
+ * base + 2
+ * accessed with LP_C(minor)
+ */
+#define LP_PINTEN 0x10 /* high to read data in or-ed with data out */
+#define LP_PSELECP 0x08 /* inverted output, active low */
+#define LP_PINITP 0x04 /* unchanged output, active low */
+#define LP_PAUTOLF 0x02 /* inverted output, active low */
+#define LP_PSTROBE 0x01 /* short high output on raising edge */
+
+/*
+ * 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, in microseconds.
+ * It is used only in the lp_init() and lp_reset() routine.
+ */
+#define LP_DELAY 50
+
+#endif
+
+#endif