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1 | 87ecb68b | pbrook | #ifndef QEMU_CHAR_H
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2 | 87ecb68b | pbrook | #define QEMU_CHAR_H
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3 | 87ecb68b | pbrook | |
4 | 376253ec | aliguori | #include "qemu-common.h" |
5 | 1de7afc9 | Paolo Bonzini | #include "qemu/queue.h" |
6 | 1de7afc9 | Paolo Bonzini | #include "qemu/option.h" |
7 | 1de7afc9 | Paolo Bonzini | #include "qemu/config-file.h" |
8 | 737e150e | Paolo Bonzini | #include "block/aio.h" |
9 | 7b1b5d19 | Paolo Bonzini | #include "qapi/qmp/qobject.h" |
10 | 7b1b5d19 | Paolo Bonzini | #include "qapi/qmp/qstring.h" |
11 | 1de7afc9 | Paolo Bonzini | #include "qemu/main-loop.h" |
12 | 376253ec | aliguori | |
13 | 87ecb68b | pbrook | /* character device */
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14 | 87ecb68b | pbrook | |
15 | 2724b180 | aliguori | #define CHR_EVENT_BREAK 0 /* serial break char */ |
16 | 2724b180 | aliguori | #define CHR_EVENT_FOCUS 1 /* focus to this terminal (modal input needed) */ |
17 | b6b8df56 | Amit Shah | #define CHR_EVENT_OPENED 2 /* new connection established */ |
18 | 2724b180 | aliguori | #define CHR_EVENT_MUX_IN 3 /* mux-focus was set to this terminal */ |
19 | 2724b180 | aliguori | #define CHR_EVENT_MUX_OUT 4 /* mux-focus will move on */ |
20 | 793cbfb5 | Amit Shah | #define CHR_EVENT_CLOSED 5 /* connection closed */ |
21 | 87ecb68b | pbrook | |
22 | 87ecb68b | pbrook | |
23 | 87ecb68b | pbrook | #define CHR_IOCTL_SERIAL_SET_PARAMS 1 |
24 | 87ecb68b | pbrook | typedef struct { |
25 | 87ecb68b | pbrook | int speed;
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26 | 87ecb68b | pbrook | int parity;
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27 | 87ecb68b | pbrook | int data_bits;
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28 | 87ecb68b | pbrook | int stop_bits;
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29 | 87ecb68b | pbrook | } QEMUSerialSetParams; |
30 | 87ecb68b | pbrook | |
31 | 87ecb68b | pbrook | #define CHR_IOCTL_SERIAL_SET_BREAK 2 |
32 | 87ecb68b | pbrook | |
33 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_READ_DATA 3 |
34 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_WRITE_DATA 4 |
35 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_READ_CONTROL 5 |
36 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_WRITE_CONTROL 6 |
37 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_READ_STATUS 7 |
38 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_EPP_READ_ADDR 8 |
39 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_EPP_READ 9 |
40 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_EPP_WRITE_ADDR 10 |
41 | 87ecb68b | pbrook | #define CHR_IOCTL_PP_EPP_WRITE 11 |
42 | 563e3c6e | aurel32 | #define CHR_IOCTL_PP_DATA_DIR 12 |
43 | 87ecb68b | pbrook | |
44 | f0664048 | aurel32 | #define CHR_IOCTL_SERIAL_SET_TIOCM 13 |
45 | f0664048 | aurel32 | #define CHR_IOCTL_SERIAL_GET_TIOCM 14 |
46 | 81174dae | aliguori | |
47 | 81174dae | aliguori | #define CHR_TIOCM_CTS 0x020 |
48 | 81174dae | aliguori | #define CHR_TIOCM_CAR 0x040 |
49 | 81174dae | aliguori | #define CHR_TIOCM_DSR 0x100 |
50 | 81174dae | aliguori | #define CHR_TIOCM_RI 0x080 |
51 | 81174dae | aliguori | #define CHR_TIOCM_DTR 0x002 |
52 | 81174dae | aliguori | #define CHR_TIOCM_RTS 0x004 |
53 | 81174dae | aliguori | |
54 | 87ecb68b | pbrook | typedef void IOEventHandler(void *opaque, int event); |
55 | 87ecb68b | pbrook | |
56 | 87ecb68b | pbrook | struct CharDriverState {
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57 | ceecf1d1 | aurel32 | void (*init)(struct CharDriverState *s); |
58 | 87ecb68b | pbrook | int (*chr_write)(struct CharDriverState *s, const uint8_t *buf, int len); |
59 | 23673ca7 | Anthony Liguori | GSource *(*chr_add_watch)(struct CharDriverState *s, GIOCondition cond);
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60 | 87ecb68b | pbrook | void (*chr_update_read_handler)(struct CharDriverState *s); |
61 | 87ecb68b | pbrook | int (*chr_ioctl)(struct CharDriverState *s, int cmd, void *arg); |
62 | 7d174059 | Mark McLoughlin | int (*get_msgfd)(struct CharDriverState *s); |
63 | 13661089 | Daniel P. Berrange | int (*chr_add_client)(struct CharDriverState *chr, int fd); |
64 | 87ecb68b | pbrook | IOEventHandler *chr_event; |
65 | 7b27a769 | Juan Quintela | IOCanReadHandler *chr_can_read; |
66 | 87ecb68b | pbrook | IOReadHandler *chr_read; |
67 | 87ecb68b | pbrook | void *handler_opaque;
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68 | 87ecb68b | pbrook | void (*chr_close)(struct CharDriverState *chr); |
69 | bd9bdce6 | balrog | void (*chr_accept_input)(struct CharDriverState *chr); |
70 | c48855e1 | Paolo Bonzini | void (*chr_set_echo)(struct CharDriverState *chr, bool echo); |
71 | 574b711a | Hans de Goede | void (*chr_set_fe_open)(struct CharDriverState *chr, int fe_open); |
72 | 87ecb68b | pbrook | void *opaque;
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73 | 5ccfae10 | aliguori | char *label;
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74 | 5ccfae10 | aliguori | char *filename;
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75 | 16665b94 | Hans de Goede | int be_open;
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76 | c0c4bd2c | Hans de Goede | int fe_open;
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77 | 19083228 | Hans de Goede | int explicit_fe_open;
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78 | bd5c51ee | Michael Roth | int explicit_be_open;
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79 | d5b27167 | Kusanagi Kouichi | int avail_connections;
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80 | 7b7ab18d | Michael Roth | int is_mux;
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81 | 2274ae9d | Gerd Hoffmann | QemuOpts *opts; |
82 | 72cf2d4f | Blue Swirl | QTAILQ_ENTRY(CharDriverState) next; |
83 | 87ecb68b | pbrook | }; |
84 | 87ecb68b | pbrook | |
85 | 2011fe56 | Anthony Liguori | /**
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86 | 2011fe56 | Anthony Liguori | * @qemu_chr_new_from_opts:
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87 | 2011fe56 | Anthony Liguori | *
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88 | 2011fe56 | Anthony Liguori | * Create a new character backend from a QemuOpts list.
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89 | 2011fe56 | Anthony Liguori | *
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90 | 2011fe56 | Anthony Liguori | * @opts see qemu-config.c for a list of valid options
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91 | 2011fe56 | Anthony Liguori | * @init not sure..
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92 | 2011fe56 | Anthony Liguori | *
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93 | 2011fe56 | Anthony Liguori | * Returns: a new character backend
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94 | 2011fe56 | Anthony Liguori | */
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95 | f69554b9 | Anthony Liguori | CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, |
96 | bd2d80b2 | Gerd Hoffmann | void (*init)(struct CharDriverState *s), |
97 | bd2d80b2 | Gerd Hoffmann | Error **errp); |
98 | 2011fe56 | Anthony Liguori | |
99 | 2011fe56 | Anthony Liguori | /**
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100 | 2011fe56 | Anthony Liguori | * @qemu_chr_new:
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101 | 2011fe56 | Anthony Liguori | *
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102 | 2011fe56 | Anthony Liguori | * Create a new character backend from a URI.
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103 | 2011fe56 | Anthony Liguori | *
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104 | 2011fe56 | Anthony Liguori | * @label the name of the backend
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105 | 2011fe56 | Anthony Liguori | * @filename the URI
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106 | 2011fe56 | Anthony Liguori | * @init not sure..
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107 | 2011fe56 | Anthony Liguori | *
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108 | 2011fe56 | Anthony Liguori | * Returns: a new character backend
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109 | 2011fe56 | Anthony Liguori | */
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110 | 2011fe56 | Anthony Liguori | CharDriverState *qemu_chr_new(const char *label, const char *filename, |
111 | 2011fe56 | Anthony Liguori | void (*init)(struct CharDriverState *s)); |
112 | 2011fe56 | Anthony Liguori | |
113 | 2011fe56 | Anthony Liguori | /**
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114 | 2011fe56 | Anthony Liguori | * @qemu_chr_delete:
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115 | 2011fe56 | Anthony Liguori | *
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116 | 2011fe56 | Anthony Liguori | * Destroy a character backend.
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117 | 2011fe56 | Anthony Liguori | */
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118 | 2011fe56 | Anthony Liguori | void qemu_chr_delete(CharDriverState *chr);
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119 | 2011fe56 | Anthony Liguori | |
120 | 2011fe56 | Anthony Liguori | /**
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121 | 2011fe56 | Anthony Liguori | * @qemu_chr_fe_set_echo:
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122 | 2011fe56 | Anthony Liguori | *
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123 | 2011fe56 | Anthony Liguori | * Ask the backend to override its normal echo setting. This only really
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124 | 2011fe56 | Anthony Liguori | * applies to the stdio backend and is used by the QMP server such that you
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125 | 2011fe56 | Anthony Liguori | * can see what you type if you try to type QMP commands.
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126 | 2011fe56 | Anthony Liguori | *
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127 | 2011fe56 | Anthony Liguori | * @echo true to enable echo, false to disable echo
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128 | 2011fe56 | Anthony Liguori | */
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129 | 15f31519 | Anthony Liguori | void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo); |
130 | 2011fe56 | Anthony Liguori | |
131 | 2011fe56 | Anthony Liguori | /**
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132 | 8e25daa8 | Hans de Goede | * @qemu_chr_fe_set_open:
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133 | 2011fe56 | Anthony Liguori | *
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134 | 8e25daa8 | Hans de Goede | * Set character frontend open status. This is an indication that the
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135 | 8e25daa8 | Hans de Goede | * front end is ready (or not) to begin doing I/O.
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136 | 2011fe56 | Anthony Liguori | */
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137 | 8e25daa8 | Hans de Goede | void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open); |
138 | 2011fe56 | Anthony Liguori | |
139 | 2011fe56 | Anthony Liguori | /**
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140 | 2011fe56 | Anthony Liguori | * @qemu_chr_fe_printf:
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141 | 2011fe56 | Anthony Liguori | *
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142 | 2011fe56 | Anthony Liguori | * Write to a character backend using a printf style interface.
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143 | 2011fe56 | Anthony Liguori | *
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144 | 2011fe56 | Anthony Liguori | * @fmt see #printf
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145 | 2011fe56 | Anthony Liguori | */
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146 | e7e71b0e | Anthony Liguori | void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...) |
147 | 8b7968f7 | Stefan Weil | GCC_FMT_ATTR(2, 3); |
148 | 2011fe56 | Anthony Liguori | |
149 | 2c8a5942 | Kevin Wolf | int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
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150 | 2c8a5942 | Kevin Wolf | GIOFunc func, void *user_data);
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151 | 23673ca7 | Anthony Liguori | |
152 | 2011fe56 | Anthony Liguori | /**
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153 | 2011fe56 | Anthony Liguori | * @qemu_chr_fe_write:
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154 | 2011fe56 | Anthony Liguori | *
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155 | 2011fe56 | Anthony Liguori | * Write data to a character backend from the front end. This function will
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156 | 2011fe56 | Anthony Liguori | * send data from the front end to the back end.
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157 | 2011fe56 | Anthony Liguori | *
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158 | 2011fe56 | Anthony Liguori | * @buf the data
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159 | 2011fe56 | Anthony Liguori | * @len the number of bytes to send
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160 | 2011fe56 | Anthony Liguori | *
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161 | 2011fe56 | Anthony Liguori | * Returns: the number of bytes consumed
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162 | 2011fe56 | Anthony Liguori | */
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163 | 2cc6e0a1 | Anthony Liguori | int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len); |
164 | 2011fe56 | Anthony Liguori | |
165 | 2011fe56 | Anthony Liguori | /**
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166 | cd18720a | Anthony Liguori | * @qemu_chr_fe_write_all:
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167 | cd18720a | Anthony Liguori | *
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168 | cd18720a | Anthony Liguori | * Write data to a character backend from the front end. This function will
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169 | cd18720a | Anthony Liguori | * send data from the front end to the back end. Unlike @qemu_chr_fe_write,
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170 | cd18720a | Anthony Liguori | * this function will block if the back end cannot consume all of the data
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171 | cd18720a | Anthony Liguori | * attempted to be written.
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172 | cd18720a | Anthony Liguori | *
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173 | cd18720a | Anthony Liguori | * @buf the data
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174 | cd18720a | Anthony Liguori | * @len the number of bytes to send
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175 | cd18720a | Anthony Liguori | *
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176 | cd18720a | Anthony Liguori | * Returns: the number of bytes consumed
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177 | cd18720a | Anthony Liguori | */
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178 | cd18720a | Anthony Liguori | int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len); |
179 | cd18720a | Anthony Liguori | |
180 | cd18720a | Anthony Liguori | /**
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181 | 2011fe56 | Anthony Liguori | * @qemu_chr_fe_ioctl:
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182 | 2011fe56 | Anthony Liguori | *
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183 | 2011fe56 | Anthony Liguori | * Issue a device specific ioctl to a backend.
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184 | 2011fe56 | Anthony Liguori | *
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185 | 2011fe56 | Anthony Liguori | * @cmd see CHR_IOCTL_*
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186 | 2011fe56 | Anthony Liguori | * @arg the data associated with @cmd
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187 | 2011fe56 | Anthony Liguori | *
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188 | 2011fe56 | Anthony Liguori | * Returns: if @cmd is not supported by the backend, -ENOTSUP, otherwise the
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189 | 2011fe56 | Anthony Liguori | * return value depends on the semantics of @cmd
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190 | 2011fe56 | Anthony Liguori | */
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191 | 2011fe56 | Anthony Liguori | int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg); |
192 | 2011fe56 | Anthony Liguori | |
193 | 2011fe56 | Anthony Liguori | /**
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194 | 2011fe56 | Anthony Liguori | * @qemu_chr_fe_get_msgfd:
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195 | 2011fe56 | Anthony Liguori | *
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196 | 2011fe56 | Anthony Liguori | * For backends capable of fd passing, return the latest file descriptor passed
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197 | 2011fe56 | Anthony Liguori | * by a client.
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198 | 2011fe56 | Anthony Liguori | *
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199 | 2011fe56 | Anthony Liguori | * Returns: -1 if fd passing isn't supported or there is no pending file
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200 | 2011fe56 | Anthony Liguori | * descriptor. If a file descriptor is returned, subsequent calls to
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201 | 2011fe56 | Anthony Liguori | * this function will return -1 until a client sends a new file
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202 | 2011fe56 | Anthony Liguori | * descriptor.
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203 | 2011fe56 | Anthony Liguori | */
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204 | 2011fe56 | Anthony Liguori | int qemu_chr_fe_get_msgfd(CharDriverState *s);
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205 | 2011fe56 | Anthony Liguori | |
206 | 2011fe56 | Anthony Liguori | /**
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207 | 44c473de | Hans de Goede | * @qemu_chr_fe_claim:
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208 | 44c473de | Hans de Goede | *
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209 | 44c473de | Hans de Goede | * Claim a backend before using it, should be called before calling
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210 | 44c473de | Hans de Goede | * qemu_chr_add_handlers().
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211 | 44c473de | Hans de Goede | *
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212 | 44c473de | Hans de Goede | * Returns: -1 if the backend is already in use by another frontend, 0 on
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213 | 44c473de | Hans de Goede | * success.
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214 | 44c473de | Hans de Goede | */
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215 | 44c473de | Hans de Goede | int qemu_chr_fe_claim(CharDriverState *s);
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216 | 44c473de | Hans de Goede | |
217 | 44c473de | Hans de Goede | /**
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218 | 44c473de | Hans de Goede | * @qemu_chr_fe_claim_no_fail:
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219 | 44c473de | Hans de Goede | *
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220 | 44c473de | Hans de Goede | * Like qemu_chr_fe_claim, but will exit qemu with an error when the
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221 | 44c473de | Hans de Goede | * backend is already in use.
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222 | 44c473de | Hans de Goede | */
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223 | 44c473de | Hans de Goede | void qemu_chr_fe_claim_no_fail(CharDriverState *s);
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224 | 44c473de | Hans de Goede | |
225 | 44c473de | Hans de Goede | /**
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226 | 44c473de | Hans de Goede | * @qemu_chr_fe_claim:
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227 | 44c473de | Hans de Goede | *
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228 | 44c473de | Hans de Goede | * Release a backend for use by another frontend.
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229 | 44c473de | Hans de Goede | *
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230 | 44c473de | Hans de Goede | * Returns: -1 if the backend is already in use by another frontend, 0 on
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231 | 44c473de | Hans de Goede | * success.
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232 | 44c473de | Hans de Goede | */
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233 | 44c473de | Hans de Goede | void qemu_chr_fe_release(CharDriverState *s);
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234 | 44c473de | Hans de Goede | |
235 | 44c473de | Hans de Goede | /**
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236 | 2011fe56 | Anthony Liguori | * @qemu_chr_be_can_write:
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237 | 2011fe56 | Anthony Liguori | *
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238 | 2011fe56 | Anthony Liguori | * Determine how much data the front end can currently accept. This function
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239 | 2011fe56 | Anthony Liguori | * returns the number of bytes the front end can accept. If it returns 0, the
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240 | 2011fe56 | Anthony Liguori | * front end cannot receive data at the moment. The function must be polled
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241 | 2011fe56 | Anthony Liguori | * to determine when data can be received.
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242 | 2011fe56 | Anthony Liguori | *
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243 | 2011fe56 | Anthony Liguori | * Returns: the number of bytes the front end can receive via @qemu_chr_be_write
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244 | 2011fe56 | Anthony Liguori | */
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245 | 2011fe56 | Anthony Liguori | int qemu_chr_be_can_write(CharDriverState *s);
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246 | 2011fe56 | Anthony Liguori | |
247 | 2011fe56 | Anthony Liguori | /**
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248 | 2011fe56 | Anthony Liguori | * @qemu_chr_be_write:
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249 | 2011fe56 | Anthony Liguori | *
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250 | 2011fe56 | Anthony Liguori | * Write data from the back end to the front end. Before issuing this call,
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251 | 2011fe56 | Anthony Liguori | * the caller should call @qemu_chr_be_can_write to determine how much data
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252 | 2011fe56 | Anthony Liguori | * the front end can currently accept.
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253 | 2011fe56 | Anthony Liguori | *
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254 | 2011fe56 | Anthony Liguori | * @buf a buffer to receive data from the front end
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255 | 2011fe56 | Anthony Liguori | * @len the number of bytes to receive from the front end
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256 | 2011fe56 | Anthony Liguori | */
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257 | 2011fe56 | Anthony Liguori | void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len); |
258 | 2011fe56 | Anthony Liguori | |
259 | a425d23f | Hans de Goede | |
260 | a425d23f | Hans de Goede | /**
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261 | a425d23f | Hans de Goede | * @qemu_chr_be_event:
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262 | a425d23f | Hans de Goede | *
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263 | a425d23f | Hans de Goede | * Send an event from the back end to the front end.
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264 | a425d23f | Hans de Goede | *
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265 | a425d23f | Hans de Goede | * @event the event to send
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266 | a425d23f | Hans de Goede | */
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267 | a425d23f | Hans de Goede | void qemu_chr_be_event(CharDriverState *s, int event); |
268 | a425d23f | Hans de Goede | |
269 | 87ecb68b | pbrook | void qemu_chr_add_handlers(CharDriverState *s,
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270 | 7b27a769 | Juan Quintela | IOCanReadHandler *fd_can_read, |
271 | 87ecb68b | pbrook | IOReadHandler *fd_read, |
272 | 87ecb68b | pbrook | IOEventHandler *fd_event, |
273 | 87ecb68b | pbrook | void *opaque);
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274 | 2011fe56 | Anthony Liguori | |
275 | fee204fd | Hans de Goede | void qemu_chr_be_generic_open(CharDriverState *s);
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276 | bd9bdce6 | balrog | void qemu_chr_accept_input(CharDriverState *s);
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277 | 13661089 | Daniel P. Berrange | int qemu_chr_add_client(CharDriverState *s, int fd); |
278 | 588b3832 | Luiz Capitulino | void qemu_chr_info_print(Monitor *mon, const QObject *ret_data); |
279 | 588b3832 | Luiz Capitulino | void qemu_chr_info(Monitor *mon, QObject **ret_data);
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280 | c845f401 | Gerd Hoffmann | CharDriverState *qemu_chr_find(const char *name); |
281 | 87ecb68b | pbrook | |
282 | 2011fe56 | Anthony Liguori | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename); |
283 | 2011fe56 | Anthony Liguori | |
284 | d654f34e | Anthony Liguori | void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *)); |
285 | 99aec012 | Gerd Hoffmann | void register_char_driver_qapi(const char *name, ChardevBackendKind kind, |
286 | 2c5f4882 | Gerd Hoffmann | void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp));
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287 | d654f34e | Anthony Liguori | |
288 | 6cbf4c8c | Cam Macdonell | /* add an eventfd to the qemu devices that are polled */
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289 | 6cbf4c8c | Cam Macdonell | CharDriverState *qemu_chr_open_eventfd(int eventfd);
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290 | 6cbf4c8c | Cam Macdonell | |
291 | 0e82f34d | aliguori | extern int term_escape_char; |
292 | 0e82f34d | aliguori | |
293 | 0beb4942 | Anthony Liguori | CharDriverState *qemu_char_get_next_serial(void);
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294 | 0beb4942 | Anthony Liguori | |
295 | f5a51cab | Gerd Hoffmann | /* msmouse */
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296 | f5a51cab | Gerd Hoffmann | CharDriverState *qemu_chr_open_msmouse(void);
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297 | f5a51cab | Gerd Hoffmann | |
298 | 2d57286d | Gerd Hoffmann | /* baum.c */
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299 | 2d57286d | Gerd Hoffmann | CharDriverState *chr_baum_init(void);
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300 | 2d57286d | Gerd Hoffmann | |
301 | 87ecb68b | pbrook | #endif |