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  1. /*
  2.  * Copyright (c) 2009 Vineeth Pillai
  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. /** @file
  33.  * @brief   Describes the pl050 keyboard/mouse controller
  34.  */
  35.  
  36. /**
  37.  * This file implements pl050 specific functions for keyboard and mouse
  38.  */
  39.  
  40. #ifndef KERN_genarch_PL050_H
  41. #define KERN_genarch_PL050_H
  42.  
  43. #include <ddi/irq.h>
  44. #include <arch/types.h>
  45. #include <console/chardev.h>
  46. #include <typedefs.h>
  47.  
  48.  
  49. /*
  50.  * pl050 register offsets from the base address
  51.  */
  52. #define PL050_CR    0x00
  53. #define PL050_STAT  0x04
  54. #define PL050_DATA  0x08
  55. #define PL050_CLOCKDIV  0x0C
  56. #define PL050_INTRSTAT  0x10
  57.  
  58. /*
  59.  * Control Register Bits
  60.  */
  61. #define PL050_CR_TYPE   (1 << 5)    /* Type 0: PS2/AT mode, 1: No Line control bit mode */
  62. #define PL050_CR_RXINTR (1 << 4)    /* Recieve Interrupt Enable */
  63. #define PL050_CR_TXINTR (1 << 3)    /* Transmit Interrupt Enable */
  64. #define PL050_CR_INTR   (1 << 2)    /* Interrupt Enable */
  65. #define PL050_CR_FKMID  (1 << 1)    /* Force KMI Data Low */
  66. #define PL050_CR_FKMIC  1       /* Force KMI Clock Low */
  67.  
  68. /*
  69.  * Status register bits
  70.  */
  71. #define PL050_STAT_TXEMPTY  (1 << 6)    /* 1: Transmit register empty */
  72. #define PL050_STAT_TXBUSY   (1 << 5)    /* 1: Busy, sending data */
  73. #define PL050_STAT_RXFULL   (1 << 4)    /* 1: register Full */
  74. #define PL050_STAT_RXBUSY   (1 << 3)    /* 1: Busy, recieving Data */
  75. #define PL050_STAT_RXPARITY (1 << 2)    /* odd parity of the last bit recieved */
  76. #define PL050_STAT_KMIC     (1 << 1)    /* status of KMICLKIN */
  77. #define PL050_STAT_KMID     1       /* status of KMIDATAIN */
  78.  
  79. /*
  80.  * Interrupt status register bits.
  81.  */
  82. #define PL050_TX_INTRSTAT   (1 << 1)    /* Transmit intr asserted */
  83. #define PL050_RX_INTRSTAT   1       /* Recieve intr asserted */
  84.  
  85. typedef struct {
  86.     ioport8_t *base;
  87.     ioport8_t *data;
  88.     ioport8_t *status;
  89.     ioport8_t *ctrl;
  90. } pl050_t;
  91.  
  92. typedef struct {
  93.     irq_t   irq;
  94.     pl050_t *pl050;
  95.     indev_t *kbrdin;
  96. } pl050_instance_t;
  97.  
  98. extern pl050_instance_t *pl050_init(pl050_t *, inr_t);
  99. extern void pl050_wire(pl050_instance_t *, indev_t *);
  100.  
  101.  
  102. #endif
  103.  
  104. /** @}
  105.  */
  106.