include/linux/pc_keyb.h

   1 /*
   2  *      include/linux/pc_keyb.h
   3  *
   4  *      PC Keyboard And Keyboard Controller
   5  *
   6  *      (c) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
   7  */
   8
   9 /*
  10  *      Configuration Switches
  11  */
  12
  13 #undef KBD_REPORT_ERR                   /* Report keyboard errors */
  14 #define KBD_REPORT_UNKN                 /* Report unknown scan codes */
  15 #define KBD_REPORT_TIMEOUTS             /* Report keyboard timeouts */
  16 #undef KBD_IS_FOCUS_9000                /* We have the brain-damaged FOCUS-9000 keyboard */
  17 #undef INITIALIZE_MOUSE                 /* Define if your PS/2 mouse needs initialization. */
  18
  19
  20
  21 #define KBD_INIT_TIMEOUT 1000           /* Timeout in ms for initializing the keyboard */
  22 #define KBC_TIMEOUT 250                 /* Timeout in ms for sending to keyboard controller */
  23 #define KBD_TIMEOUT 1000                /* Timeout in ms for keyboard command acknowledge */
  24
  25 /*
  26  *      Internal variables of the driver
  27  */
  28
  29 extern unsigned char pckbd_read_mask;
  30 extern unsigned char aux_device_present;
  31
  32 /*
  33  *      Keyboard Controller Registers on normal PCs.
  34  */
  35
  36 #define KBD_STATUS_REG          0x64    /* Status register (R) */
  37 #define KBD_CNTL_REG            0x64    /* Controller command register (W) */
  38 #define KBD_DATA_REG            0x60    /* Keyboard data register (R/W) */
  39
  40 /*
  41  *      Keyboard Controller Commands
  42  */
  43
  44 #define KBD_CCMD_READ_MODE      0x20    /* Read mode bits */
  45 #define KBD_CCMD_WRITE_MODE     0x60    /* Write mode bits */
  46 #define KBD_CCMD_GET_VERSION    0xA1    /* Get controller version */
  47 #define KBD_CCMD_MOUSE_DISABLE  0xA7    /* Disable mouse interface */
  48 #define KBD_CCMD_MOUSE_ENABLE   0xA8    /* Enable mouse interface */
  49 #define KBD_CCMD_TEST_MOUSE     0xA9    /* Mouse interface test */
  50 #define KBD_CCMD_SELF_TEST      0xAA    /* Controller self test */
  51 #define KBD_CCMD_KBD_TEST       0xAB    /* Keyboard interface test */
  52 #define KBD_CCMD_KBD_DISABLE    0xAD    /* Keyboard interface disable */
  53 #define KBD_CCMD_KBD_ENABLE     0xAE    /* Keyboard interface enable */
  54 #define KBD_CCMD_WRITE_AUX_OBUF 0xD3    /* Write to output buffer as if
  55                                            initiated by the auxiliary device */
  56 #define KBD_CCMD_WRITE_MOUSE    0xD4    /* Write the following byte to the mouse */
  57
  58 /*
  59  *      Keyboard Commands
  60  */
  61
  62 #define KBD_CMD_SET_LEDS        0xED    /* Set keyboard leds */
  63 #define KBD_CMD_SET_RATE        0xF3    /* Set typematic rate */
  64 #define KBD_CMD_ENABLE          0xF4    /* Enable scanning */
  65 #define KBD_CMD_DISABLE         0xF5    /* Disable scanning */
  66 #define KBD_CMD_RESET           0xFF    /* Reset */
  67
  68 /*
  69  *      Keyboard Replies
  70  */
  71
  72 #define KBD_REPLY_POR           0xAA    /* Power on reset */
  73 #define KBD_REPLY_ACK           0xFA    /* Command ACK */
  74 #define KBD_REPLY_RESEND        0xFE    /* Command NACK, send the cmd again */
  75
  76 /*
  77  *      Status Register Bits
  78  */
  79
  80 #define KBD_STAT_OBF            0x01    /* Keyboard output buffer full */
  81 #define KBD_STAT_IBF            0x02    /* Keyboard input buffer full */
  82 #define KBD_STAT_SELFTEST       0x04    /* Self test successful */
  83 #define KBD_STAT_CMD            0x08    /* Last write was a command write (0=data) */
  84 #define KBD_STAT_UNLOCKED       0x10    /* Zero if keyboard locked */
  85 #define KBD_STAT_MOUSE_OBF      0x20    /* Mouse output buffer full */
  86 #define KBD_STAT_GTO            0x40    /* General receive/xmit timeout */
  87 #define KBD_STAT_PERR           0x80    /* Parity error */
  88
  89 #define AUX_STAT_OBF (KBD_STAT_OBF | KBD_STAT_MOUSE_OBF)
  90
  91 /*
  92  *      Controller Mode Register Bits
  93  */
  94
  95 #define KBD_MODE_KBD_INT        0x01    /* Keyboard data generate IRQ1 */
  96 #define KBD_MODE_MOUSE_INT      0x02    /* Mouse data generate IRQ12 */
  97 #define KBD_MODE_SYS            0x04    /* The system flag (?) */
  98 #define KBD_MODE_NO_KEYLOCK     0x08    /* The keylock doesn't affect the keyboard if set */
  99 #define KBD_MODE_DISABLE_KBD    0x10    /* Disable keyboard interface */
 100 #define KBD_MODE_DISABLE_MOUSE  0x20    /* Disable mouse interface */
 101 #define KBD_MODE_KCC            0x40    /* Scan code conversion to PC format */
 102 #define KBD_MODE_RFU            0x80
 103
 104 /*
 105  *      Mouse Commands
 106  */
 107
 108 #define AUX_SET_RES             0xE8    /* Set resolution */
 109 #define AUX_SET_SCALE11         0xE6    /* Set 1:1 scaling */
 110 #define AUX_SET_SCALE21         0xE7    /* Set 2:1 scaling */
 111 #define AUX_GET_SCALE           0xE9    /* Get scaling factor */
 112 #define AUX_SET_STREAM          0xEA    /* Set stream mode */
 113 #define AUX_SET_SAMPLE          0xF3    /* Set sample rate */
 114 #define AUX_ENABLE_DEV          0xF4    /* Enable aux device */
 115 #define AUX_DISABLE_DEV         0xF5    /* Disable aux device */
 116 #define AUX_RESET               0xFF    /* Reset aux device */
 117 #define AUX_ACK                 0xFA    /* Command byte ACK. */
 118
 119 #define AUX_BUF_SIZE            2048    /* This might be better divisible by
 120                                            three to make overruns stay in sync
 121                                            but then the read function would need
 122                                            a lock etc - ick */
 123
 124 struct aux_queue {
 125         unsigned long head;
 126         unsigned long tail;
 127         wait_queue_head_t proc_list;
 128         struct fasync_struct *fasync;
 129         unsigned char buf[AUX_BUF_SIZE];
 130 };