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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 | |
3655 | jermar | 40 | #include <ddi/irq.h> |
3961 | jermar | 41 | #include <arch/types.h> |
1875 | jermar | 42 | |
3961 | jermar | 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 | |
3961 | jermar | 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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3941 | jermar | 123 | extern irq_ownership_t z8530_claim(irq_t *); |
3906 | jermar | 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 | */ |