+++ /dev/null
-/* Line printer stuff mostly follows the original Centronics printers. See
- IEEE Std.1284-1994 Standard Signaling Method for a Bi-directional Parallel
- Peripheral Interface for Personal Computers for 5 modes of data transfer. */
-
-/* Parallel port registers: data (0x3bc, 0x378, 0x278), status=data+1, control=data+2 */
-
-/* Parallel port status register (read only):
-bit 7: NBSY (1: ready, 0: busy or error or off-line)
-bit 6: NACK (if NBSY=1, then 1; if NBSY=0 then 1: sending data, 0: ready with data)
-bit 5: PAP (1: out-of-paper)
-bit 4: OFON (1: on-line)
-bit 3: NFEH (1: OK, 0: printer error)
-bits 2-0: 07
-
-On out-of-paper: PAP=1, OFON=0, NFEH=1.
-
-"When reading the busy status, read twice in a row and use the value
-obtained from the second read. This improves the reliability on some
-parallel ports when the busy line may not be connected and is floating."
-"On some Okidata printers when the busy signal switches from high to low,
-the printer sends a 50 ns glitch on the paper out signal line. Before
-declaring a paper out condition, check the status again."
-(The Undocumented PC, F. van Gilluwe, p. 711)
-*/
-
-/* Parallel port control register (read/write):
-bit 4: IRQ (1: we want an interrupt when NACK goes from 1 to 0)
-bit 3: DSL (1: activate printer)
-bit 2: NINI (0: initialise printer)
-bit 1: ALF (1: printer performs automatic linefeed after each line)
-bit 0: STR (0->1: generate a Strobe pulse: transport data to printer)
-*/
-
-/* Parallel port timing:
- 1. wait for NBSY=1
- 2. outb(data byte, data port)
- 3. wait for at least 0.5us
- 4. read control port, OR with STR=0x1, output to control port - purpose:
- generate strobe pulse; this will make the busy line go high
- 5. wait for at least 0.5us
- 6. read control port, AND with !STR, output to control port
- 7. wait for at least 0.5us
- 8. in a loop: read status register until NACK bit is 0 or NBSY=1
- (the printer will keep NACK=0 for at least 0.5us, then NACK=NBSY=1).
-*/
-
-
-/* lp ioctls */
-#define LPCHAR 0x0601 /* specify the number of times we ask for the status
- (waiting for ready) before giving up with a timeout
- The duration may mainly depend on the timing of an inb. */
-#define LPTIME 0x0602 /* time to sleep after each timeout (in units of 0.01 sec) */
-#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 /* #of loops to wait before taking strobe high */
-#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 */
-#define LPGETFLAGS 0x060e /* get status flags */
-
-#define LPSTRICT 0x060f /* enable/disable strict compliance (2.0.36) */
- /* Strict: wait until !READY before taking strobe low;
- this may be bad for the Epson Stylus 800.
- Not strict: wait a constant time as given by LPWAIT */
-#define LPTRUSTIRQ 0x060f /* set/unset the LP_TRUST_IRQ flag (2.1.131) */
-
-/*
- * 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 */
0..255, and as a list of active flags. When this option is specified, \-q
off, turning off the display of the current IRQ, is implied.
.TP
-\fB\-T\fR, \fB\-\-trust\-irq\fR \fI<on|off>\fR
-This option is obsolete. It was added in Linux 2.1.131, and removed again in
-Linux 2.3.10. The below is for these old kernels only.
-.IP
-This option tells the lp driver to trust or not the IRQ. This option makes
-sense only if you are using interrupts. If you tell the lp driver to trust
-the irq, then, when the lp driver will get an irq, it will send the next
-pending character to the printer unconditionally, even if the printer still
-claims to be BUSY. This is the only way to sleep on interrupt (and so the
-handle the irq printing efficiently) at least on Epson Stylus Color Printers.
-The lp driver automagically detects if you could get improved performance by
-setting this flag, and in such case it will warn you with a kernel message.
-.IP
-NOTE: Trusting the irq is reported to corrupt the printing on some hardware,
-you must try to know if your printer will work or not...
-.TP
\fB\-r\fR, \fB\-\-reset\fR
This option resets the port. It requires a Linux kernel version of 1.1.80 or
later.
.PP
.B \-C
requires a Linux version prior to 2.1.131.
-.PP
-.B \-T
-requires a Linux version of 2.1.131 or later.
-.SH BUGS
-By some unfortunate coincidence the ioctl LPSTRICT of 2.0.36 has the same
-number as the ioctl LPTRUSTIRQ introduced in 2.1.131. So, use of the \-T
-option on a 2.0.36 kernel with an tunelp compiled under 2.1.131 or later may
-have unexpected effects.
.SH FILES
.I /dev/lp?
.br
#include <sys/types.h>
#include <unistd.h>
-#include "lp.h"
+#include <linux/lp.h>
+
#include "nls.h"
#include "closestream.h"
#include "strutils.h"
fputs(_(" -o, --check-status <on|off> check printer status before printing\n"), out);
fputs(_(" -C, --careful <on|off> extra checking to status check\n"), out);
fputs(_(" -s, --status query printer status\n"), out);
- fputs(_(" -T, --trust-irq <on|off> make driver to trust irq\n"), out);
fputs(_(" -r, --reset reset the port\n"), out);
fputs(_(" -q, --print-irq <on|off> display current irq setting\n"), out);
fputs(USAGE_SEPARATOR, out);
cmds = cmds->next;
cmds->next = NULL;
break;
- case 'T':
- /* Note: this will do the wrong thing on
- * 2.0.36 when compiled under 2.2.x
- */
- cmds->op = LPTRUSTIRQ;
- cmds->val = parse_switch(optarg, _("argument error"), "on", "off", NULL);
- cmds->next = xmalloc(sizeof(struct command));
- cmds = cmds->next;
- cmds->next = NULL;
- break;
case 'v':
case 'V':
printf(UTIL_LINUX_VERSION);
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