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