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Rev | Author | Line No. | Line |
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4377 | svoboda | 1 | /* |
2 | * Copyright (c) 2006 Josef Cejka |
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3 | * Copyright (c) 2006 Jakub Vana |
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4 | * Copyright (c) 2008 Jiri Svoboda |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * |
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11 | * - Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * - Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * - The name of the author may not be used to endorse or promote products |
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17 | * derived from this software without specific prior written permission. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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20 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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21 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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22 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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24 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 | */ |
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30 | |||
31 | /** @addtogroup libc |
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32 | * @{ |
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33 | */ |
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34 | /** @file |
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35 | */ |
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36 | |||
37 | #include <libc.h> |
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38 | #include <async.h> |
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39 | #include <io/stream.h> |
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40 | #include <ipc/console.h> |
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41 | #include <ipc/services.h> |
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42 | #include <errno.h> |
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43 | #include <string.h> |
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44 | #include <console.h> |
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45 | |||
46 | static int console_phone = -1; |
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47 | |||
48 | /** Size of cbuffer. */ |
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49 | #define CBUFFER_SIZE 256 |
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50 | |||
51 | /** Buffer for writing characters to the console. */ |
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52 | static char cbuffer[CBUFFER_SIZE]; |
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53 | |||
54 | /** Pointer to end of cbuffer. */ |
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55 | static char *cbuffer_end = cbuffer + CBUFFER_SIZE; |
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56 | |||
57 | /** Pointer to first available field in cbuffer. */ |
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58 | static char *cbp = cbuffer; |
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59 | |||
60 | |||
61 | /** Write one character to the console via IPC. */ |
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62 | static void cons_putchar(wchar_t c) |
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63 | { |
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64 | console_wait(); |
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65 | async_msg_1(console_phone, CONSOLE_PUTCHAR, c); |
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66 | } |
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67 | |||
68 | /** Write characters to the console via IPC or to klog */ |
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69 | static ssize_t cons_write(const char *buf, size_t size) |
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70 | { |
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71 | console_open(false); |
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72 | |||
73 | if (console_phone >= 0) { |
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74 | async_serialize_start(); |
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75 | |||
76 | ipc_call_t answer; |
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77 | aid_t req = async_send_0(console_phone, CONSOLE_WRITE, &answer); |
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78 | ipcarg_t rc = ipc_data_write_start(console_phone, (void *) buf, size); |
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79 | |||
80 | if (rc != EOK) { |
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81 | async_wait_for(req, NULL); |
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82 | async_serialize_end(); |
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83 | return (ssize_t) rc; |
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84 | } |
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85 | |||
86 | async_wait_for(req, &rc); |
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87 | async_serialize_end(); |
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88 | |||
89 | if (rc == EOK) |
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90 | return (ssize_t) IPC_GET_ARG1(answer); |
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91 | else |
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92 | return -1; |
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93 | } else |
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94 | return __SYSCALL3(SYS_KLOG, 1, (sysarg_t) buf, size); |
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95 | } |
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96 | |||
97 | /** Write all data from output buffer to the console. */ |
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98 | static void cbuffer_flush(void) |
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99 | { |
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100 | size_t len = cbp - cbuffer; |
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101 | |||
102 | while (len > 0) { |
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103 | ssize_t rc = cons_write(cbuffer, cbp - cbuffer); |
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104 | if (rc < 0) |
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105 | return; |
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106 | |||
107 | len -= rc; |
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108 | } |
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109 | |||
110 | cbp = cbuffer; |
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111 | } |
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112 | |||
113 | /** Drop all data in console output buffer. */ |
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114 | static void cbuffer_drain(void) |
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115 | { |
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116 | cbp = cbuffer; |
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117 | } |
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118 | |||
119 | /** Write one character to the output buffer. */ |
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120 | static inline void cbuffer_putc(char c) |
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121 | { |
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122 | if (cbp == cbuffer_end) |
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123 | cbuffer_flush(); |
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124 | |||
125 | *cbp++ = c; |
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126 | |||
127 | if (c == '\n') |
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128 | cbuffer_flush(); |
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129 | } |
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130 | |||
131 | int console_open(bool blocking) |
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132 | { |
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133 | if (console_phone < 0) { |
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134 | int phone; |
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135 | |||
136 | if (blocking) |
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137 | phone = ipc_connect_me_to_blocking(PHONE_NS, |
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138 | SERVICE_CONSOLE, 0, 0); |
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139 | else |
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140 | phone = ipc_connect_me_to(PHONE_NS, |
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141 | SERVICE_CONSOLE, 0, 0); |
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142 | |||
143 | if (phone >= 0) |
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144 | console_phone = phone; |
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145 | } |
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146 | |||
147 | return console_phone; |
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148 | } |
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149 | |||
150 | void console_close(void) |
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151 | { |
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152 | if (console_phone >= 0) { |
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153 | if (ipc_hangup(console_phone) == 0) |
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154 | console_phone = -1; |
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155 | } |
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156 | } |
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157 | |||
158 | void console_wait(void) |
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159 | { |
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160 | while (console_phone < 0) |
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161 | console_open(true); |
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162 | } |
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163 | |||
164 | void console_clear(void) |
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165 | { |
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166 | console_wait(); |
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167 | cbuffer_drain(); |
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168 | async_msg_0(console_phone, CONSOLE_CLEAR); |
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169 | } |
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170 | |||
171 | int console_get_size(int *rows, int *cols) |
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172 | { |
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173 | console_wait(); |
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174 | |||
175 | ipcarg_t r; |
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176 | ipcarg_t c; |
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177 | int rc = async_req_0_2(console_phone, CONSOLE_GETSIZE, &r, &c); |
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178 | |||
179 | *rows = (int) r; |
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180 | *cols = (int) c; |
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181 | |||
182 | return rc; |
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183 | } |
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184 | |||
185 | void console_set_style(int style) |
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186 | { |
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187 | console_wait(); |
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188 | cbuffer_flush(); |
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189 | async_msg_1(console_phone, CONSOLE_SET_STYLE, style); |
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190 | } |
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191 | |||
192 | void console_set_color(int fg_color, int bg_color, int flags) |
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193 | { |
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194 | console_wait(); |
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195 | cbuffer_flush(); |
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196 | async_msg_3(console_phone, CONSOLE_SET_COLOR, fg_color, bg_color, flags); |
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197 | } |
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198 | |||
199 | void console_set_rgb_color(int fg_color, int bg_color) |
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200 | { |
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201 | console_wait(); |
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202 | cbuffer_flush(); |
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203 | async_msg_2(console_phone, CONSOLE_SET_RGB_COLOR, fg_color, bg_color); |
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204 | } |
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205 | |||
206 | void console_cursor_visibility(int show) |
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207 | { |
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208 | console_wait(); |
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209 | cbuffer_flush(); |
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210 | async_msg_1(console_phone, CONSOLE_CURSOR_VISIBILITY, show != 0); |
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211 | } |
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212 | |||
213 | void console_kcon_enable(void) |
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214 | { |
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215 | console_wait(); |
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216 | cbuffer_flush(); |
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217 | async_msg_0(console_phone, CONSOLE_KCON_ENABLE); |
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218 | } |
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219 | |||
220 | void console_goto(int row, int col) |
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221 | { |
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222 | console_wait(); |
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223 | cbuffer_flush(); |
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224 | async_msg_2(console_phone, CONSOLE_GOTO, row, col); |
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225 | } |
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226 | |||
227 | void console_putchar(wchar_t c) |
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228 | { |
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229 | console_wait(); |
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230 | cbuffer_flush(); |
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231 | cons_putchar(c); |
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232 | } |
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233 | |||
234 | /** Write characters to the console. */ |
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235 | ssize_t console_write(const char *buf, size_t size) |
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236 | { |
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237 | size_t left = size; |
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238 | |||
239 | while (left > 0) { |
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240 | cbuffer_putc(*buf++); |
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241 | left--; |
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242 | } |
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243 | |||
244 | return size; |
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245 | } |
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246 | |||
247 | /** Write a NULL-terminated string to the console. */ |
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248 | void console_putstr(const char *str) |
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249 | { |
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250 | size_t left = str_size(str); |
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251 | |||
252 | while (left > 0) { |
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253 | ssize_t rc = console_write(str, left); |
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254 | |||
255 | if (rc < 0) { |
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256 | /* Error */ |
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257 | return; |
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258 | } |
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259 | |||
260 | str += rc; |
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261 | left -= rc; |
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262 | } |
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263 | } |
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264 | |||
265 | /** Flush all output to the console or klog. */ |
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266 | void console_flush(void) |
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267 | { |
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268 | cbuffer_flush(); |
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269 | if (console_phone >= 0) |
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270 | async_msg_0(console_phone, CONSOLE_FLUSH); |
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271 | } |
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272 | |||
273 | /** @} |
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274 | */ |