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| 1 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2001-2004 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 | |||
| 1838 | jermar | 29 | /** @addtogroup genarch |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 1841 | jermar | 32 | /** |
| 33 | * @file |
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| 34 | * @brief Headers for Zilog 8530 serial port / keyboard driver. |
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| 1702 | cejka | 35 | */ |
| 36 | |||
| 1841 | jermar | 37 | #ifndef KERN_Z8530_H_ |
| 38 | #define KERN_Z8530_H_ |
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| 1 | jermar | 39 | |
| 3674 | svoboda | 40 | #include <ddi/irq.h> |
| 4344 | svoboda | 41 | #include <arch/types.h> |
| 1875 | jermar | 42 | |
| 4344 | svoboda | 43 | #define WR0 0 |
| 44 | #define WR1 1 |
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| 45 | #define WR2 2 |
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| 46 | #define WR3 3 |
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| 47 | #define WR4 4 |
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| 48 | #define WR5 5 |
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| 49 | #define WR6 6 |
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| 50 | #define WR7 7 |
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| 51 | #define WR8 8 |
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| 52 | #define WR9 9 |
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| 53 | #define WR10 10 |
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| 54 | #define WR11 11 |
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| 55 | #define WR12 12 |
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| 56 | #define WR13 13 |
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| 57 | #define WR14 14 |
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| 58 | #define WR15 15 |
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| 1875 | jermar | 59 | |
| 4344 | svoboda | 60 | #define RR0 0 |
| 61 | #define RR1 1 |
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| 62 | #define RR2 2 |
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| 63 | #define RR3 3 |
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| 64 | #define RR8 8 |
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| 65 | #define RR10 10 |
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| 66 | #define RR12 12 |
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| 67 | #define RR13 13 |
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| 68 | #define RR14 14 |
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| 69 | #define RR15 15 |
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| 70 | |||
| 71 | /** Reset pending TX interrupt. */ |
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| 72 | #define WR0_TX_IP_RST (0x5 << 3) |
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| 73 | #define WR0_ERR_RST (0x6 << 3) |
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| 74 | |||
| 75 | /** Receive Interrupts Disabled. */ |
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| 76 | #define WR1_RID (0x0 << 3) |
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| 77 | /** Receive Interrupt on First Character or Special Condition. */ |
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| 78 | #define WR1_RIFCSC (0x1 << 3) |
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| 79 | /** Interrupt on All Receive Characters or Special Conditions. */ |
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| 80 | #define WR1_IARCSC (0x2 << 3) |
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| 81 | /** Receive Interrupt on Special Condition. */ |
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| 82 | #define WR1_RISC (0x3 << 3) |
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| 83 | /** Parity Is Special Condition. */ |
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| 84 | #define WR1_PISC (0x1 << 2) |
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| 85 | |||
| 86 | /** Rx Enable. */ |
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| 87 | #define WR3_RX_ENABLE (0x1 << 0) |
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| 88 | /** 8-bits per character. */ |
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| 89 | #define WR3_RX8BITSCH (0x3 << 6) |
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| 90 | |||
| 91 | /** Master Interrupt Enable. */ |
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| 92 | #define WR9_MIE (0x1 << 3) |
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| 93 | |||
| 94 | /** Receive Character Available. */ |
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| 95 | #define RR0_RCA (0x1 << 0) |
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| 96 | |||
| 97 | /** z8530's registers. */ |
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| 98 | struct z8530 { |
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| 99 | union { |
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| 100 | ioport8_t ctl_b; |
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| 101 | ioport8_t status_b; |
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| 102 | } __attribute__ ((packed)); |
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| 103 | uint8_t pad1; |
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| 104 | ioport8_t data_b; |
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| 105 | uint8_t pad2; |
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| 106 | union { |
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| 107 | ioport8_t ctl_a; |
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| 108 | ioport8_t status_a; |
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| 109 | } __attribute__ ((packed)); |
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| 110 | uint8_t pad3; |
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| 111 | ioport8_t data_a; |
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| 112 | } __attribute__ ((packed)); |
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| 113 | typedef struct z8530 z8530_t; |
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| 114 | |||
| 115 | /** Structure representing the z8530 device. */ |
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| 116 | typedef struct { |
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| 117 | devno_t devno; |
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| 118 | irq_t irq; |
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| 119 | z8530_t *z8530; |
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| 120 | } z8530_instance_t; |
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| 121 | |||
| 122 | extern bool z8530_init(z8530_t *, devno_t, inr_t, cir_t, void *); |
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| 123 | extern irq_ownership_t z8530_claim(irq_t *); |
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| 4343 | svoboda | 124 | extern void z8530_irq_handler(irq_t *); |
| 1 | jermar | 125 | |
| 126 | #endif |
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| 1702 | cejka | 127 | |
| 1838 | jermar | 128 | /** @} |
| 1702 | cejka | 129 | */ |