| 1 | /*
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| 2 | * Copyright (c) 2018 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup uspace_drv_pc_lpt
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef PC_LPT_HW_H
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| 36 | #define PC_LPT_HW_H
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| 37 |
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| 38 | #include <ddi.h>
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| 39 |
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| 40 | /** PC parallel port registers */
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| 41 | typedef struct {
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| 42 | /** Data out register */
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| 43 | ioport8_t data;
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| 44 | /** Status register */
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| 45 | ioport8_t status;
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| 46 | /** Control register */
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| 47 | ioport8_t control;
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| 48 | } pc_lpt_regs_t;
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| 49 |
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| 50 | /** Printer control register bits */
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| 51 | typedef enum {
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| 52 | /** Strobe */
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| 53 | ctl_strobe = 0,
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| 54 | /** Auto linefeed */
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| 55 | ctl_autofd = 1,
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| 56 | /** -Init */
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| 57 | ctl_ninit = 2,
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| 58 | /** Select */
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| 59 | ctl_select = 3,
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| 60 | /** IRQ Enable */
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| 61 | ctl_irq_enable = 4
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| 62 | } pc_lpt_ctl_bits_t;
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| 63 |
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| 64 | /** Printer status register bits */
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| 65 | typedef enum {
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| 66 | /** -Error */
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| 67 | sts_nerror = 3,
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| 68 | /** Select */
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| 69 | sts_select = 4,
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| 70 | /** Init */
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| 71 | sts_paper_end = 5,
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| 72 | /** -Ack */
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| 73 | sts_nack = 6,
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| 74 | /** -Busy */
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| 75 | sts_nbusy = 7
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| 76 | } pc_lpt_sts_bits_t;
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| 77 |
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| 78 | #endif
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| 79 |
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| 80 | /** @}
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| 81 | */
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