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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 | */ |