1 | /*
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2 | * Copyright (c) 2011 Jan Vesely
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3 | * All rights reserved.
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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 | /** @addtogroup drvkbd
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29 | * @{
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30 | */
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31 | /** @file
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32 | * @brief XT keyboard driver;
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33 | */
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34 |
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35 | #include <bool.h>
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36 | #include <errno.h>
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37 | #include <devman.h>
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38 | #include <device/char_dev.h>
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39 | #include <ddf/log.h>
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40 | #include <io/keycode.h>
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41 | #include <io/console.h>
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42 | #include <ipc/mouseev.h>
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43 | #include <abi/ipc/methods.h>
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44 |
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45 | #include "ps2mouse.h"
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46 |
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47 | #define PS2_MOUSE_OUT_INIT 0xf4
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48 | #define PS2_MOUSE_ACK 0xfa
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49 |
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50 | #define BUFSIZE 3
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51 |
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52 | #define X_SIGN (1 << 4)
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53 | #define Y_SIGN (1 << 5)
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54 | #define X_OVERFLOW (1 << 6)
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55 | #define Y_OVERFLOW (1 << 7)
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56 |
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57 | #define BUTTON_LEFT 0
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58 | #define BUTTON_RIGHT 1
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59 | #define BUTTON_MIDDLE 2
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60 | #define BUTTON_COUNT 3
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61 |
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62 | #define BUTTON_MASK(button) (1 << button)
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63 |
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64 | /*----------------------------------------------------------------------------*/
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65 | static int polling_ps2(void *);
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66 | static void default_connection_handler(ddf_fun_t *fun,
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67 | ipc_callid_t icallid, ipc_call_t *icall);
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68 | /*----------------------------------------------------------------------------*/
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69 | static ddf_dev_ops_t mouse_ops = {
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70 | .default_handler = default_connection_handler
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71 | };
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72 | /*----------------------------------------------------------------------------*/
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73 | int ps2_mouse_init(ps2_mouse_t *mouse, ddf_dev_t *dev)
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74 | {
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75 | assert(mouse);
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76 | assert(dev);
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77 | mouse->input_sess = NULL;
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78 | mouse->parent_sess = devman_parent_device_connect(EXCHANGE_SERIALIZE,
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79 | dev->handle, IPC_FLAG_BLOCKING);
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80 | if (!mouse->parent_sess)
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81 | return ENOMEM;
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82 |
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83 | mouse->mouse_fun = ddf_fun_create(dev, fun_exposed, "mouse");
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84 | if (!mouse->mouse_fun) {
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85 | async_hangup(mouse->parent_sess);
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86 | return ENOMEM;
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87 | }
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88 | mouse->mouse_fun->ops = &mouse_ops;
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89 | mouse->mouse_fun->driver_data = mouse;
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90 |
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91 | int ret = ddf_fun_bind(mouse->mouse_fun);
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92 | if (ret != EOK) {
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93 | async_hangup(mouse->parent_sess);
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94 | mouse->mouse_fun->driver_data = NULL;
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95 | ddf_fun_destroy(mouse->mouse_fun);
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96 | return ENOMEM;
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97 | }
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98 |
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99 | ret = ddf_fun_add_to_category(mouse->mouse_fun, "mouse");
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100 | if (ret != EOK) {
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101 | async_hangup(mouse->parent_sess);
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102 | ddf_fun_unbind(mouse->mouse_fun);
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103 | mouse->mouse_fun->driver_data = NULL;
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104 | ddf_fun_destroy(mouse->mouse_fun);
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105 | return ENOMEM;
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106 | }
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107 | /* Enable mouse data reporting. */
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108 | uint8_t report = PS2_MOUSE_OUT_INIT;
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109 | ssize_t size = char_dev_write(mouse->parent_sess, &report, 1);
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110 | if (size != 1) {
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111 | ddf_msg(LVL_ERROR, "Failed to write INIT.\n");
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112 | async_hangup(mouse->parent_sess);
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113 | ddf_fun_unbind(mouse->mouse_fun);
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114 | mouse->mouse_fun->driver_data = NULL;
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115 | ddf_fun_destroy(mouse->mouse_fun);
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116 | return EIO;
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117 | }
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118 | #if 0 /* Enable this when we can guarantee that the response won't be lost. */
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119 | size = char_dev_read(mouse->parent_sess, &report, 1);
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120 | if (size != 1 || report != PS2_MOUSE_ACK) {
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121 | ddf_msg(LVL_ERROR, "MOUSE FAILED TO ACK %hhx.\n", report);
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122 | async_hangup(mouse->parent_sess);
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123 | ddf_fun_unbind(mouse->mouse_fun);
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124 | mouse->mouse_fun->driver_data = NULL;
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125 | ddf_fun_destroy(mouse->mouse_fun);
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126 | return EIO;
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127 | }
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128 | #endif
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129 |
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130 | mouse->polling_fibril = fibril_create(polling_ps2, mouse);
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131 | if (!mouse->polling_fibril) {
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132 | async_hangup(mouse->parent_sess);
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133 | ddf_fun_unbind(mouse->mouse_fun);
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134 | mouse->mouse_fun->driver_data = NULL;
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135 | ddf_fun_destroy(mouse->mouse_fun);
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136 | return ENOMEM;
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137 | }
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138 | fibril_add_ready(mouse->polling_fibril);
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139 | return EOK;
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140 | }
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141 | /*----------------------------------------------------------------------------*/
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142 | int polling_ps2(void *arg)
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143 | {
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144 | assert(arg);
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145 | ps2_mouse_t *mouse = arg;
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146 |
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147 | assert(mouse->parent_sess);
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148 | bool buttons[BUTTON_COUNT] = {};
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149 | while (1) {
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150 |
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151 | uint8_t packet[BUFSIZE] = {};
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152 | const ssize_t size =
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153 | char_dev_read(mouse->parent_sess, packet, BUFSIZE);
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154 |
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155 | if (size != 3) {
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156 | ddf_msg(LVL_WARN, "Incorrect packet size: %zd.", size);
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157 | continue;
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158 | }
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159 | ddf_msg(LVL_DEBUG2, "Got packet: %hhx:%hhx:%hhx.",
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160 | packet[0], packet[1], packet[2]);
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161 |
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162 | async_exch_t *exch =
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163 | async_exchange_begin(mouse->input_sess);
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164 | if (!exch) {
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165 | ddf_msg(LVL_ERROR,
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166 | "Failed to create input exchange.");
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167 | continue;
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168 | }
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169 | /* Buttons */
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170 | for (unsigned i = 0; i < BUTTON_COUNT; ++i) {
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171 | if (buttons[i] != (bool)(packet[0] & BUTTON_MASK(i))) {
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172 | buttons[i] = !buttons[i];
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173 | async_msg_2(exch, MOUSEEV_BUTTON_EVENT, i + 1,
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174 | buttons[i]);
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175 | }
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176 | }
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177 |
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178 | const int move_x = packet[1] * ((packet[0] & X_SIGN) ? -1 : 1);
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179 | const int move_y = packet[2] * ((packet[0] & Y_SIGN) ? 1 : -1);
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180 | if (move_x != 0 || move_y != 0) {
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181 | async_msg_2(exch, MOUSEEV_MOVE_EVENT, move_x, move_y);
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182 | }
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183 | async_exchange_end(exch);
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184 | }
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185 | }
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186 | /*----------------------------------------------------------------------------*/
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187 | void default_connection_handler(ddf_fun_t *fun,
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188 | ipc_callid_t icallid, ipc_call_t *icall)
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189 | {
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190 | if (fun == NULL || fun->driver_data == NULL) {
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191 | ddf_msg(LVL_ERROR, "%s: Missing parameter.\n", __FUNCTION__);
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192 | async_answer_0(icallid, EINVAL);
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193 | return;
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194 | }
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195 |
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196 | const sysarg_t method = IPC_GET_IMETHOD(*icall);
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197 | ps2_mouse_t *mouse = fun->driver_data;
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198 |
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199 | switch (method) {
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200 | /* This might be ugly but async_callback_receive_start makes no
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201 | * difference for incorrect call and malloc failure. */
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202 | case IPC_M_CONNECT_TO_ME: {
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203 | async_sess_t *sess =
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204 | async_callback_receive_start(EXCHANGE_SERIALIZE, icall);
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205 | /* Probably ENOMEM error, try again. */
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206 | if (sess == NULL) {
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207 | ddf_msg(LVL_WARN,
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208 | "Failed to create start input session");
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209 | async_answer_0(icallid, EAGAIN);
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210 | break;
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211 | }
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212 | if (mouse->input_sess == NULL) {
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213 | mouse->input_sess = sess;
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214 | ddf_msg(LVL_DEBUG, "Set input session");
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215 | async_answer_0(icallid, EOK);
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216 | } else {
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217 | ddf_msg(LVL_ERROR, "Input session already set");
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218 | async_answer_0(icallid, ELIMIT);
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219 | }
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220 | break;
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221 | }
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222 | default:
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223 | ddf_msg(LVL_ERROR, "Unknown method: %d.\n", (int)method);
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224 | async_answer_0(icallid, EINVAL);
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225 | break;
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226 | }
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227 | }
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