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Annotation of src/sys/arch/pc532/dev/lptreg.h, Revision 1.4

1.4     ! chs         1: /*     $NetBSD: lptreg.h,v 1.3 1995/05/16 07:30:35 phil Exp $  */
1.1       phil        2:
1.3       phil        3: /*
1.1       phil        4:  * Copyright (c) 1994 Matthias Pfaller.
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  * 3. All advertising materials mentioning features or use of this software
                     16:  *    must display the following acknowledgement:
                     17:  *     This product includes software developed by Matthias Pfaller.
1.3       phil       18:  * 4. The name of the author may not be used to endorse or promote products
                     19:  *    derived from this software without specific prior written permission
1.1       phil       20:  *
1.3       phil       21:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1.1       phil       22:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     23:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.3       phil       24:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
1.1       phil       25:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     26:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     27:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     28:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     29:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     30:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     31:  *
                     32:  *     lptreg.h: definitions for the lpt driver.
                     33:  *
                     34:  */
                     35:
                     36: struct i8255 {
                     37:        unsigned char port_a;           /* Port A data  (r/w) */
                     38:        unsigned char port_b;           /* Port B data  (r/w) */
                     39:        unsigned char port_c;           /* Port C data  (r/w) */
                     40:        unsigned char port_control;     /* Port control (-/w) */
                     41: };
                     42:
                     43: /* port_a */
                     44: #define LPA_ALF                0x01
                     45: #define LPA_SELECT     0x02
1.3       phil       46: #define LPA_NPRIME     0x04
1.1       phil       47: #define        LPA_ACKENABLE   0x08            /* Enable Ack interrupts */
                     48: #define LPA_ACTIVE     0x10            /* Device active led */
                     49:
                     50: /* port_c */
                     51: #define LPC_IRQ                0x01
                     52: #define LPC_NSTROBE    0x02
                     53: #define LPC_NBUSY      0x08            /* Negative logic! */
                     54: #define LPC_NERROR     0x10
1.3       phil       55: #define LPC_ONLINE     0x20
1.1       phil       56: #define LPC_NOPAPER    0x40
1.3       phil       57: #define LPC_NACK       0x80
1.1       phil       58:
                     59: /* port_control */
                     60: #define LPT_PROBE_MODE 0x8c
                     61: #define LPT_MODE       0x8d            /* Port A: Output, Mode 0 */
                     62:                                        /* Port B: Output, Mode 1 */
                     63:                                        /* Port C: Input */
                     64: #define LPT_IRQENABLE  0x05            /* Enable LPT interrupts */
                     65: #define LPT_IRQDISABLE 0x04            /* Disable LPT interrupts */
                     66:
                     67: #define LPT_PROBE_MASK 0x08
                     68: #define LPT_PROBE_SET  0x07
                     69: #define LPT_PROBE_CLR  0x06