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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 4344 | svoboda | 2 | * Copyright (c) 2009 Jakub Jermar |
| 1 | jermar | 3 | * All rights reserved. |
| 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 | |||
| 1754 | jermar | 29 | /** @addtogroup genarch |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 1754 | jermar | 32 | /** |
| 1757 | jermar | 33 | * @file |
| 4344 | svoboda | 34 | * @brief Zilog 8530 serial port driver. |
| 1702 | cejka | 35 | */ |
| 36 | |||
| 1842 | jermar | 37 | #include <genarch/kbd/z8530.h> |
| 1843 | jermar | 38 | #include <genarch/kbd/key.h> |
| 1842 | jermar | 39 | #include <genarch/kbd/scanc.h> |
| 40 | #include <genarch/kbd/scanc_sun.h> |
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| 4344 | svoboda | 41 | #include <arch/drivers/kbd.h> |
| 42 | #include <console/console.h> |
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| 43 | #include <console/chardev.h> |
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| 1920 | jermar | 44 | #include <ddi/irq.h> |
| 1 | jermar | 45 | #include <arch/asm.h> |
| 4344 | svoboda | 46 | #include <mm/slab.h> |
| 1 | jermar | 47 | |
| 4344 | svoboda | 48 | static inline void z8530_write(ioport8_t *ctl, uint8_t reg, uint8_t val) |
| 49 | { |
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| 50 | /* |
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| 51 | * Registers 8-15 will automatically issue the Point High |
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| 52 | * command as their bit 3 is 1. |
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| 53 | */ |
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| 54 | pio_write_8(ctl, reg); /* select register */ |
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| 55 | pio_write_8(ctl, val); /* write value */ |
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| 56 | } |
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| 57 | |||
| 58 | static inline uint8_t z8530_read(ioport8_t *ctl, uint8_t reg) |
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| 59 | { |
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| 60 | /* |
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| 61 | * Registers 8-15 will automatically issue the Point High |
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| 62 | * command as their bit 3 is 1. |
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| 63 | */ |
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| 64 | pio_write_8(ctl, reg); /* select register */ |
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| 65 | return pio_read_8(ctl); |
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| 66 | } |
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| 67 | |||
| 670 | vana | 68 | /* |
| 1842 | jermar | 69 | * These codes read from z8530 data register are silently ignored. |
| 895 | jermar | 70 | */ |
| 1842 | jermar | 71 | #define IGNORE_CODE 0x7f /* all keys up */ |
| 895 | jermar | 72 | |
| 1842 | jermar | 73 | static void z8530_suspend(chardev_t *); |
| 74 | static void z8530_resume(chardev_t *); |
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| 511 | jermar | 75 | |
| 76 | static chardev_operations_t ops = { |
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| 1842 | jermar | 77 | .suspend = z8530_suspend, |
| 78 | .resume = z8530_resume, |
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| 511 | jermar | 79 | }; |
| 80 | |||
| 4344 | svoboda | 81 | /** Initialize z8530. */ |
| 82 | bool |
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| 83 | z8530_init(z8530_t *dev, devno_t devno, inr_t inr, cir_t cir, void *cir_arg) |
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| 1 | jermar | 84 | { |
| 4344 | svoboda | 85 | z8530_instance_t *instance; |
| 1944 | jermar | 86 | |
| 4344 | svoboda | 87 | chardev_initialize("z8530_kbd", &kbrd, &ops); |
| 88 | stdin = &kbrd; |
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| 1925 | jermar | 89 | |
| 4344 | svoboda | 90 | instance = malloc(sizeof(z8530_instance_t), FRAME_ATOMIC); |
| 91 | if (!instance) |
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| 92 | return false; |
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| 93 | |||
| 94 | instance->devno = devno; |
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| 95 | instance->z8530 = dev; |
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| 96 | |||
| 97 | irq_initialize(&instance->irq); |
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| 98 | instance->irq.devno = devno; |
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| 99 | instance->irq.inr = inr; |
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| 100 | instance->irq.claim = z8530_claim; |
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| 101 | instance->irq.handler = z8530_irq_handler; |
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| 102 | instance->irq.instance = instance; |
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| 103 | instance->irq.cir = cir; |
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| 104 | instance->irq.cir_arg = cir_arg; |
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| 105 | irq_register(&instance->irq); |
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| 106 | |||
| 107 | (void) z8530_read(&dev->ctl_a, RR8); |
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| 108 | |||
| 1925 | jermar | 109 | /* |
| 110 | * Clear any pending TX interrupts or we never manage |
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| 111 | * to set FHC UART interrupt state to idle. |
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| 112 | */ |
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| 4344 | svoboda | 113 | z8530_write(&dev->ctl_a, WR0, WR0_TX_IP_RST); |
| 1925 | jermar | 114 | |
| 3674 | svoboda | 115 | /* interrupt on all characters */ |
| 4344 | svoboda | 116 | z8530_write(&dev->ctl_a, WR1, WR1_IARCSC); |
| 1925 | jermar | 117 | |
| 118 | /* 8 bits per character and enable receiver */ |
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| 4344 | svoboda | 119 | z8530_write(&dev->ctl_a, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
| 1925 | jermar | 120 | |
| 3674 | svoboda | 121 | /* Master Interrupt Enable. */ |
| 4344 | svoboda | 122 | z8530_write(&dev->ctl_a, WR9, WR9_MIE); |
| 1849 | jermar | 123 | |
| 4344 | svoboda | 124 | return true; |
| 1474 | palkovsky | 125 | } |
| 670 | vana | 126 | |
| 511 | jermar | 127 | /* Called from getc(). */ |
| 1842 | jermar | 128 | void z8530_resume(chardev_t *d) |
| 511 | jermar | 129 | { |
| 130 | } |
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| 131 | |||
| 132 | /* Called from getc(). */ |
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| 1842 | jermar | 133 | void z8530_suspend(chardev_t *d) |
| 511 | jermar | 134 | { |
| 135 | } |
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| 878 | vana | 136 | |
| 4344 | svoboda | 137 | irq_ownership_t z8530_claim(irq_t *irq) |
| 878 | vana | 138 | { |
| 4344 | svoboda | 139 | z8530_instance_t *instance = irq->instance; |
| 140 | z8530_t *dev = instance->z8530; |
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| 878 | vana | 141 | |
| 4344 | svoboda | 142 | return (z8530_read(&dev->ctl_a, RR0) & RR0_RCA); |
| 878 | vana | 143 | } |
| 895 | jermar | 144 | |
| 4344 | svoboda | 145 | void z8530_irq_handler(irq_t *irq) |
| 895 | jermar | 146 | { |
| 4344 | svoboda | 147 | z8530_instance_t *instance = irq->instance; |
| 148 | z8530_t *dev = instance->z8530; |
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| 1780 | jermar | 149 | uint8_t x; |
| 895 | jermar | 150 | |
| 4344 | svoboda | 151 | if (z8530_read(&dev->ctl_a, RR0) & RR0_RCA) { |
| 152 | x = z8530_read(&dev->ctl_a, RR8); |
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| 895 | jermar | 153 | if (x != IGNORE_CODE) { |
| 154 | if (x & KEY_RELEASE) |
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| 155 | key_released(x ^ KEY_RELEASE); |
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| 156 | else |
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| 157 | key_pressed(x); |
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| 158 | } |
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| 159 | } |
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| 160 | } |
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| 1702 | cejka | 161 | |
| 1754 | jermar | 162 | /** @} |
| 1702 | cejka | 163 | */ |