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  1. /*
  2.  * Copyright (c) 2009 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup genarch
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief Headers for Zilog 8530 serial controller.
  35.  */
  36.  
  37. #ifndef KERN_Z8530_H_
  38. #define KERN_Z8530_H_
  39.  
  40. #include <ddi/irq.h>
  41. #include <arch/types.h>
  42. #include <console/chardev.h>
  43.  
  44. #define WR0   0
  45. #define WR1   1
  46. #define WR2   2
  47. #define WR3   3
  48. #define WR4   4
  49. #define WR5   5
  50. #define WR6   6
  51. #define WR7   7
  52. #define WR8   8
  53. #define WR9   9
  54. #define WR10  10
  55. #define WR11  11
  56. #define WR12  12
  57. #define WR13  13
  58. #define WR14  14
  59. #define WR15  15
  60.  
  61. #define RR0   0
  62. #define RR1   1
  63. #define RR2   2
  64. #define RR3   3
  65. #define RR8   8
  66. #define RR10  10
  67. #define RR12  12
  68. #define RR13  13
  69. #define RR14  14
  70. #define RR15  15
  71.  
  72. /** Reset pending TX interrupt. */
  73. #define WR0_TX_IP_RST  (0x5 << 3)
  74. #define WR0_ERR_RST    (0x6 << 3)
  75.  
  76. /** Receive Interrupts Disabled. */
  77. #define WR1_RID     (0x0 << 3)
  78. /** Receive Interrupt on First Character or Special Condition. */
  79. #define WR1_RIFCSC  (0x1 << 3)
  80. /** Interrupt on All Receive Characters or Special Conditions. */
  81. #define WR1_IARCSC  (0x2 << 3)
  82. /** Receive Interrupt on Special Condition. */
  83. #define WR1_RISC    (0x3 << 3)
  84. /** Parity Is Special Condition. */
  85. #define WR1_PISC    (0x1 << 2)
  86.  
  87. /** Rx Enable. */
  88. #define WR3_RX_ENABLE  (0x1 << 0)
  89. /** 8-bits per character. */
  90. #define WR3_RX8BITSCH  (0x3 << 6)
  91.  
  92. /** Master Interrupt Enable. */
  93. #define WR9_MIE  (0x1 << 3)
  94.  
  95. /** Receive Character Available. */
  96. #define RR0_RCA  (0x1 << 0)
  97.  
  98. /** z8530's registers. */
  99. typedef struct {
  100.     union {
  101.         ioport8_t ctl_b;
  102.         ioport8_t status_b;
  103.     } __attribute__ ((packed));
  104.     uint8_t pad1;
  105.     ioport8_t data_b;
  106.     uint8_t pad2;
  107.     union {
  108.         ioport8_t ctl_a;
  109.         ioport8_t status_a;
  110.     } __attribute__ ((packed));
  111.     uint8_t pad3;
  112.     ioport8_t data_a;
  113. } __attribute__ ((packed)) z8530_t;
  114.  
  115. /** Structure representing the z8530 device. */
  116. typedef struct {
  117.     devno_t devno;
  118.     irq_t irq;
  119.     z8530_t *z8530;
  120.     indev_t kbrdin;
  121. } z8530_instance_t;
  122.  
  123. extern devin_t *z8530_init(z8530_t *, devno_t, inr_t, cir_t, void *);
  124.  
  125. #endif
  126.  
  127. /** @}
  128.  */
  129.