| 1 | /*
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| 2 | * Copyright (c) 2006 Josef Cejka
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| 3 | * Copyright (c) 2011 Jan Vesely
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| 4 | * Copyright (c) 2017 Jiri Svoboda
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | *
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| 11 | * - Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | * - Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | * - The name of the author may not be used to endorse or promote products
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| 17 | * derived from this software without specific prior written permission.
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| 18 | *
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 29 | */
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| 30 |
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| 31 | /** @addtogroup i8042
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| 32 | * @{
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| 33 | */
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| 34 |
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| 35 | /** @file
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| 36 | * @brief i8042 port driver.
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| 37 | */
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| 38 |
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| 39 | #ifndef i8042_H_
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| 40 | #define i8042_H_
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| 41 |
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| 42 | #include <adt/circ_buf.h>
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| 43 | #include <io/chardev_srv.h>
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| 44 | #include <ddi.h>
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| 45 | #include <fibril_synch.h>
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| 46 | #include <ddf/driver.h>
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| 47 |
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| 48 | #define NAME "i8042"
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| 49 |
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| 50 | #define BUFFER_SIZE 12
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| 51 |
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| 52 | /** i8042 HW I/O interface */
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| 53 | typedef struct {
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| 54 | ioport8_t data;
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| 55 | uint8_t pad[3];
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| 56 | ioport8_t status;
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| 57 | } __attribute__((packed)) i8042_regs_t;
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| 58 |
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| 59 | /** i8042 Port. */
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| 60 | typedef struct {
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| 61 | /** Controller */
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| 62 | struct i8042 *ctl;
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| 63 | /** Device function */
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| 64 | ddf_fun_t *fun;
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| 65 | /** Character device server data */
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| 66 | chardev_srvs_t cds;
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| 67 | /** Circular buffer */
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| 68 | circ_buf_t cbuf;
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| 69 | /** Buffer data space */
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| 70 | uint8_t buf_data[BUFFER_SIZE];
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| 71 | /** Protect buffer */
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| 72 | fibril_mutex_t buf_lock;
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| 73 | /** Signal new data in buffer */
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| 74 | fibril_condvar_t buf_cv;
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| 75 | } i8042_port_t;
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| 76 |
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| 77 | /** i8042 Controller. */
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| 78 | typedef struct i8042 {
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| 79 | /**< I/O registers. */
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| 80 | i8042_regs_t *regs;
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| 81 | /** Keyboard port */
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| 82 | i8042_port_t *kbd;
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| 83 | /** AUX port */
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| 84 | i8042_port_t *aux;
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| 85 | /** Prevents simultanous port writes.*/
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| 86 | fibril_mutex_t write_guard;
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| 87 | } i8042_t;
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| 88 |
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| 89 | extern errno_t i8042_init(i8042_t *, addr_range_t *, int, int, ddf_dev_t *);
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| 90 |
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| 91 | #endif
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| 92 |
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| 93 | /**
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| 94 | * @}
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| 95 | */
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