qemu-char.h

   1 #ifndef QEMU_CHAR_H
   2 #define QEMU_CHAR_H
   3
   4 #include "qemu-common.h"
   5 #include "qemu-queue.h"
   6 #include "qemu-option.h"
   7 #include "qemu-config.h"
   8 #include "qobject.h"
   9
  10 /* character device */
  11
  12 #define CHR_EVENT_BREAK   0 /* serial break char */
  13 #define CHR_EVENT_FOCUS   1 /* focus to this terminal (modal input needed) */
  14 #define CHR_EVENT_OPENED  2 /* new connection established */
  15 #define CHR_EVENT_MUX_IN  3 /* mux-focus was set to this terminal */
  16 #define CHR_EVENT_MUX_OUT 4 /* mux-focus will move on */
  17 #define CHR_EVENT_CLOSED  5 /* connection closed */
  18
  19
  20 #define CHR_IOCTL_SERIAL_SET_PARAMS   1
  21 typedef struct {
  22     int speed;
  23     int parity;
  24     int data_bits;
  25     int stop_bits;
  26 } QEMUSerialSetParams;
  27
  28 #define CHR_IOCTL_SERIAL_SET_BREAK    2
  29
  30 #define CHR_IOCTL_PP_READ_DATA        3
  31 #define CHR_IOCTL_PP_WRITE_DATA       4
  32 #define CHR_IOCTL_PP_READ_CONTROL     5
  33 #define CHR_IOCTL_PP_WRITE_CONTROL    6
  34 #define CHR_IOCTL_PP_READ_STATUS      7
  35 #define CHR_IOCTL_PP_EPP_READ_ADDR    8
  36 #define CHR_IOCTL_PP_EPP_READ         9
  37 #define CHR_IOCTL_PP_EPP_WRITE_ADDR  10
  38 #define CHR_IOCTL_PP_EPP_WRITE       11
  39 #define CHR_IOCTL_PP_DATA_DIR        12
  40
  41 #define CHR_IOCTL_SERIAL_SET_TIOCM   13
  42 #define CHR_IOCTL_SERIAL_GET_TIOCM   14
  43
  44 #define CHR_TIOCM_CTS   0x020
  45 #define CHR_TIOCM_CAR   0x040
  46 #define CHR_TIOCM_DSR   0x100
  47 #define CHR_TIOCM_RI    0x080
  48 #define CHR_TIOCM_DTR   0x002
  49 #define CHR_TIOCM_RTS   0x004
  50
  51 typedef void IOEventHandler(void *opaque, int event);
  52
  53 struct CharDriverState {
  54     void (*init)(struct CharDriverState *s);
  55     int (*chr_write)(struct CharDriverState *s, const uint8_t *buf, int len);
  56     void (*chr_update_read_handler)(struct CharDriverState *s);
  57     int (*chr_ioctl)(struct CharDriverState *s, int cmd, void *arg);
  58     int (*get_msgfd)(struct CharDriverState *s);
  59     IOEventHandler *chr_event;
  60     IOCanReadHandler *chr_can_read;
  61     IOReadHandler *chr_read;
  62     void *handler_opaque;
  63     void (*chr_send_event)(struct CharDriverState *chr, int event);
  64     void (*chr_close)(struct CharDriverState *chr);
  65     void (*chr_accept_input)(struct CharDriverState *chr);
  66     void *opaque;
  67     QEMUBH *bh;
  68     char *label;
  69     char *filename;
  70     int opened;
  71     QTAILQ_ENTRY(CharDriverState) next;
  72 };
  73
  74 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
  75 CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
  76                                     void (*init)(struct CharDriverState *s));
  77 CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s));
  78 void qemu_chr_close(CharDriverState *chr);
  79 void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
  80     GCC_FMT_ATTR(2, 3);
  81 int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len);
  82 void qemu_chr_send_event(CharDriverState *s, int event);
  83 void qemu_chr_add_handlers(CharDriverState *s,
  84                            IOCanReadHandler *fd_can_read,
  85                            IOReadHandler *fd_read,
  86                            IOEventHandler *fd_event,
  87                            void *opaque);
  88 int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg);
  89 void qemu_chr_generic_open(CharDriverState *s);
  90 int qemu_chr_can_read(CharDriverState *s);
  91 void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len);
  92 int qemu_chr_get_msgfd(CharDriverState *s);
  93 void qemu_chr_accept_input(CharDriverState *s);
  94 void qemu_chr_info_print(Monitor *mon, const QObject *ret_data);
  95 void qemu_chr_info(Monitor *mon, QObject **ret_data);
  96 CharDriverState *qemu_chr_find(const char *name);
  97
  98 /* add an eventfd to the qemu devices that are polled */
  99 CharDriverState *qemu_chr_open_eventfd(int eventfd);
 100
 101 extern int term_escape_char;
 102
 103 /* async I/O support */
 104
 105 int qemu_set_fd_handler2(int fd,
 106                          IOCanReadHandler *fd_read_poll,
 107                          IOHandler *fd_read,
 108                          IOHandler *fd_write,
 109                          void *opaque);
 110 int qemu_set_fd_handler(int fd,
 111                         IOHandler *fd_read,
 112                         IOHandler *fd_write,
 113                         void *opaque);
 114 #endif