filename | src/drivers/serial_unix.c |
changeset | 1081:ef31ae97bb8b |
prev | 1079:691f9f621c5a |
author | nkeynes |
date | Mon Mar 05 11:41:03 2012 +1000 (12 years ago) |
permissions | -rw-r--r-- |
last change | Small cleanups: Refactor the post-windowing setup into gl_init_driver() in video_gl.c Move gl_sl.c into src/drivers and tidy up a bit. Fix OS X compiling plugins with -mdynamic-no-pic |
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nkeynes@1077 | 1 | /** |
nkeynes@1077 | 2 | * $Id$ |
nkeynes@1077 | 3 | * |
nkeynes@1077 | 4 | * Host driver for a serial port attachment, that can be hooked to a character |
nkeynes@1077 | 5 | * device, fifo or named pipe. |
nkeynes@1077 | 6 | * |
nkeynes@1077 | 7 | * Copyright (c) 2009 Nathan Keynes. |
nkeynes@1077 | 8 | * |
nkeynes@1077 | 9 | * This program is free software; you can redistribute it and/or modify |
nkeynes@1077 | 10 | * it under the terms of the GNU General Public License as published by |
nkeynes@1077 | 11 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@1077 | 12 | * (at your option) any later version. |
nkeynes@1077 | 13 | * |
nkeynes@1077 | 14 | * This program is distributed in the hope that it will be useful, |
nkeynes@1077 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@1077 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@1077 | 17 | * GNU General Public License for more details. |
nkeynes@1077 | 18 | */ |
nkeynes@1077 | 19 | |
nkeynes@1077 | 20 | #include <stdio.h> |
nkeynes@1077 | 21 | #include <stdlib.h> |
nkeynes@1077 | 22 | #include <fcntl.h> |
nkeynes@1077 | 23 | #include <sys/stat.h> |
nkeynes@1077 | 24 | |
nkeynes@1077 | 25 | #include "lxdream.h" |
nkeynes@1077 | 26 | #include "config.h" |
nkeynes@1077 | 27 | #include "ioutil.h" |
nkeynes@1077 | 28 | #include "serial.h" |
nkeynes@1077 | 29 | |
nkeynes@1077 | 30 | |
nkeynes@1077 | 31 | typedef struct serial_fd_device { |
nkeynes@1077 | 32 | struct serial_device dev; |
nkeynes@1077 | 33 | FILE *in; |
nkeynes@1077 | 34 | FILE *out; |
nkeynes@1077 | 35 | gboolean closeOnDestroy; |
nkeynes@1077 | 36 | io_listener_t listener; |
nkeynes@1077 | 37 | } *serial_fd_device_t; |
nkeynes@1077 | 38 | |
nkeynes@1077 | 39 | static void serial_fd_device_attach(serial_device_t dev); |
nkeynes@1077 | 40 | static void serial_fd_device_detach(serial_device_t dev); |
nkeynes@1077 | 41 | static void serial_fd_device_destroy(serial_device_t dev); |
nkeynes@1077 | 42 | static void serial_fd_device_set_line_speed(struct serial_device *dev, uint32_t bps); |
nkeynes@1077 | 43 | static void serial_fd_device_set_line_params(struct serial_device *dev, int flags); |
nkeynes@1077 | 44 | static void serial_fd_device_receive_data(struct serial_device *dev, uint8_t value); |
nkeynes@1077 | 45 | static gboolean serial_fd_device_transmit_data( int fd, void *dev); |
nkeynes@1077 | 46 | |
nkeynes@1077 | 47 | static gboolean serial_config_changed(void *data, struct lxdream_config_group *group, unsigned item, |
nkeynes@1077 | 48 | const gchar *oldval, const gchar *newval); |
nkeynes@1077 | 49 | |
nkeynes@1077 | 50 | struct lxdream_config_group serial_group = |
nkeynes@1077 | 51 | { "serial", serial_config_changed, NULL, NULL, |
nkeynes@1079 | 52 | {{ "device", N_("Serial device"), CONFIG_TYPE_FILE, "/dev/tty" }, |
nkeynes@1077 | 53 | { NULL, CONFIG_TYPE_NONE }} }; |
nkeynes@1077 | 54 | |
nkeynes@1077 | 55 | void serial_init() |
nkeynes@1077 | 56 | { |
nkeynes@1077 | 57 | const gchar *name = serial_group.params[0].value; |
nkeynes@1077 | 58 | if( name != NULL ) { |
nkeynes@1077 | 59 | serial_device_t dev = serial_fd_device_new_filename(name); |
nkeynes@1077 | 60 | if( dev != NULL ) { |
nkeynes@1077 | 61 | serial_attach_device( dev ); |
nkeynes@1077 | 62 | } |
nkeynes@1077 | 63 | } |
nkeynes@1077 | 64 | } |
nkeynes@1077 | 65 | |
nkeynes@1077 | 66 | static gboolean serial_config_changed(void *data, struct lxdream_config_group *group, unsigned item, |
nkeynes@1077 | 67 | const gchar *oldval, const gchar *newval) |
nkeynes@1077 | 68 | { |
nkeynes@1077 | 69 | if( item == 0 ) { |
nkeynes@1077 | 70 | serial_destroy_device(serial_detach_device()); |
nkeynes@1077 | 71 | serial_device_t dev = serial_fd_device_new_filename(newval); |
nkeynes@1077 | 72 | if( dev != NULL ) { |
nkeynes@1077 | 73 | serial_attach_device( dev ); |
nkeynes@1077 | 74 | } |
nkeynes@1077 | 75 | } |
nkeynes@1081 | 76 | return TRUE; |
nkeynes@1077 | 77 | } |
nkeynes@1077 | 78 | |
nkeynes@1077 | 79 | |
nkeynes@1077 | 80 | |
nkeynes@1077 | 81 | serial_device_t serial_fd_device_new_filename( const gchar *filename ) |
nkeynes@1077 | 82 | { |
nkeynes@1077 | 83 | FILE *out = fopen( filename, "w+" ); |
nkeynes@1077 | 84 | FILE *in; |
nkeynes@1077 | 85 | struct stat st; |
nkeynes@1077 | 86 | |
nkeynes@1077 | 87 | if( out == NULL ) { |
nkeynes@1077 | 88 | return NULL; |
nkeynes@1077 | 89 | } |
nkeynes@1077 | 90 | |
nkeynes@1077 | 91 | if( fstat( fileno(out), &st ) != 0 ) { |
nkeynes@1077 | 92 | fclose(out); |
nkeynes@1077 | 93 | return NULL; |
nkeynes@1077 | 94 | } |
nkeynes@1077 | 95 | |
nkeynes@1077 | 96 | if( S_ISCHR(st.st_mode) || S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode) ) { |
nkeynes@1077 | 97 | in = out; |
nkeynes@1077 | 98 | } else { |
nkeynes@1077 | 99 | in = NULL; |
nkeynes@1077 | 100 | } |
nkeynes@1077 | 101 | |
nkeynes@1077 | 102 | return (serial_device_t)serial_fd_device_new_file(in, out, TRUE); |
nkeynes@1077 | 103 | } |
nkeynes@1077 | 104 | |
nkeynes@1077 | 105 | serial_device_t serial_fd_device_new_console() |
nkeynes@1077 | 106 | { |
nkeynes@1077 | 107 | return serial_fd_device_new_file( stdin, stdout, FALSE ); |
nkeynes@1077 | 108 | } |
nkeynes@1077 | 109 | |
nkeynes@1077 | 110 | serial_device_t serial_fd_device_new_file( FILE *in, FILE *out, gboolean closeOnDestroy ) |
nkeynes@1077 | 111 | { |
nkeynes@1077 | 112 | if( in != NULL ) |
nkeynes@1077 | 113 | fcntl( fileno(in), F_SETFL, O_NONBLOCK ); |
nkeynes@1077 | 114 | |
nkeynes@1077 | 115 | serial_fd_device_t dev = (serial_fd_device_t)malloc(sizeof(struct serial_fd_device)); |
nkeynes@1077 | 116 | if( dev == NULL ) { |
nkeynes@1077 | 117 | if( closeOnDestroy ) { |
nkeynes@1077 | 118 | if( in != NULL ) |
nkeynes@1077 | 119 | fclose(in); |
nkeynes@1077 | 120 | if( out != NULL && out != in ) |
nkeynes@1077 | 121 | fclose(out); |
nkeynes@1077 | 122 | } |
nkeynes@1077 | 123 | return NULL; |
nkeynes@1077 | 124 | } |
nkeynes@1077 | 125 | |
nkeynes@1077 | 126 | dev->dev.attach = serial_fd_device_attach; |
nkeynes@1077 | 127 | dev->dev.detach = serial_fd_device_detach; |
nkeynes@1077 | 128 | dev->dev.destroy = serial_fd_device_destroy; |
nkeynes@1077 | 129 | dev->dev.set_line_speed = serial_fd_device_set_line_speed; |
nkeynes@1077 | 130 | dev->dev.set_line_params = serial_fd_device_set_line_params; |
nkeynes@1077 | 131 | dev->dev.receive_data = serial_fd_device_receive_data; |
nkeynes@1077 | 132 | dev->in = in; |
nkeynes@1077 | 133 | dev->out = out; |
nkeynes@1077 | 134 | dev->closeOnDestroy = closeOnDestroy; |
nkeynes@1077 | 135 | return (serial_device_t)dev; |
nkeynes@1077 | 136 | } |
nkeynes@1077 | 137 | |
nkeynes@1077 | 138 | static void serial_fd_device_attach(serial_device_t dev) |
nkeynes@1077 | 139 | { |
nkeynes@1077 | 140 | serial_fd_device_t fddev = (serial_fd_device_t)dev; |
nkeynes@1077 | 141 | if( fddev->in != NULL ) |
nkeynes@1077 | 142 | fddev->listener = io_register_listener( fileno(fddev->in), serial_fd_device_transmit_data, fddev, NULL ); |
nkeynes@1077 | 143 | } |
nkeynes@1077 | 144 | |
nkeynes@1077 | 145 | static void serial_fd_device_detach(serial_device_t dev) |
nkeynes@1077 | 146 | { |
nkeynes@1077 | 147 | serial_fd_device_t fddev = (serial_fd_device_t)dev; |
nkeynes@1077 | 148 | if( fddev->in != NULL ) |
nkeynes@1077 | 149 | io_unregister_listener( fddev->listener ); |
nkeynes@1077 | 150 | } |
nkeynes@1077 | 151 | |
nkeynes@1077 | 152 | static void serial_fd_device_destroy(serial_device_t dev) |
nkeynes@1077 | 153 | { |
nkeynes@1077 | 154 | serial_fd_device_t fddev = (serial_fd_device_t)dev; |
nkeynes@1077 | 155 | if( fddev->closeOnDestroy ) { |
nkeynes@1077 | 156 | if( fddev->in != NULL ) |
nkeynes@1077 | 157 | fclose(fddev->in); |
nkeynes@1077 | 158 | if( fddev->out != NULL && fddev->out != fddev->in ) |
nkeynes@1077 | 159 | fclose(fddev->out); |
nkeynes@1077 | 160 | } |
nkeynes@1077 | 161 | fddev->in = NULL; |
nkeynes@1077 | 162 | fddev->out = NULL; |
nkeynes@1077 | 163 | free(fddev); |
nkeynes@1077 | 164 | } |
nkeynes@1077 | 165 | static void serial_fd_device_set_line_speed(struct serial_device *dev, uint32_t bps) |
nkeynes@1077 | 166 | { |
nkeynes@1077 | 167 | /* Do nothing for now */ |
nkeynes@1077 | 168 | } |
nkeynes@1077 | 169 | static void serial_fd_device_set_line_params(struct serial_device *dev, int flags) |
nkeynes@1077 | 170 | { |
nkeynes@1077 | 171 | /* Do nothing for now */ |
nkeynes@1077 | 172 | } |
nkeynes@1077 | 173 | static void serial_fd_device_receive_data(struct serial_device *dev, uint8_t value) |
nkeynes@1077 | 174 | { |
nkeynes@1077 | 175 | serial_fd_device_t fddev = (serial_fd_device_t)dev; |
nkeynes@1077 | 176 | if( fddev->out != NULL ) |
nkeynes@1077 | 177 | fputc( value, fddev->out ); |
nkeynes@1077 | 178 | } |
nkeynes@1077 | 179 | |
nkeynes@1077 | 180 | static gboolean serial_fd_device_transmit_data( int fd, void *dev ) |
nkeynes@1077 | 181 | { |
nkeynes@1077 | 182 | serial_fd_device_t fddev = (serial_fd_device_t)dev; |
nkeynes@1077 | 183 | char buf[4096]; |
nkeynes@1077 | 184 | size_t len = fread(buf, 1, sizeof(buf), fddev->in); |
nkeynes@1077 | 185 | if( len > 0 ) { |
nkeynes@1077 | 186 | serial_transmit_data(buf, len); |
nkeynes@1077 | 187 | } |
nkeynes@1077 | 188 | return TRUE; |
nkeynes@1077 | 189 | } |
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