File:  [Qemu by Fabrice Bellard] / qemu / qemu-char.h
Revision 1.1.1.8 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:55:54 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu1000, qemu0151, HEAD
qemu 0.15.1

    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:     int (*chr_add_client)(struct CharDriverState *chr, int fd);
   61:     IOEventHandler *chr_event;
   62:     IOCanReadHandler *chr_can_read;
   63:     IOReadHandler *chr_read;
   64:     void *handler_opaque;
   65:     void (*chr_send_event)(struct CharDriverState *chr, int event);
   66:     void (*chr_close)(struct CharDriverState *chr);
   67:     void (*chr_accept_input)(struct CharDriverState *chr);
   68:     void (*chr_set_echo)(struct CharDriverState *chr, bool echo);
   69:     void (*chr_guest_open)(struct CharDriverState *chr);
   70:     void (*chr_guest_close)(struct CharDriverState *chr);
   71:     void *opaque;
   72:     QEMUBH *bh;
   73:     char *label;
   74:     char *filename;
   75:     int opened;
   76:     int avail_connections;
   77:     QTAILQ_ENTRY(CharDriverState) next;
   78: };
   79: 
   80: QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename);
   81: CharDriverState *qemu_chr_open_opts(QemuOpts *opts,
   82:                                     void (*init)(struct CharDriverState *s));
   83: CharDriverState *qemu_chr_open(const char *label, const char *filename, void (*init)(struct CharDriverState *s));
   84: void qemu_chr_set_echo(struct CharDriverState *chr, bool echo);
   85: void qemu_chr_guest_open(struct CharDriverState *chr);
   86: void qemu_chr_guest_close(struct CharDriverState *chr);
   87: void qemu_chr_close(CharDriverState *chr);
   88: void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
   89:     GCC_FMT_ATTR(2, 3);
   90: int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len);
   91: void qemu_chr_send_event(CharDriverState *s, int event);
   92: void qemu_chr_add_handlers(CharDriverState *s,
   93:                            IOCanReadHandler *fd_can_read,
   94:                            IOReadHandler *fd_read,
   95:                            IOEventHandler *fd_event,
   96:                            void *opaque);
   97: int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg);
   98: void qemu_chr_generic_open(CharDriverState *s);
   99: int qemu_chr_can_read(CharDriverState *s);
  100: void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len);
  101: int qemu_chr_get_msgfd(CharDriverState *s);
  102: void qemu_chr_accept_input(CharDriverState *s);
  103: int qemu_chr_add_client(CharDriverState *s, int fd);
  104: void qemu_chr_info_print(Monitor *mon, const QObject *ret_data);
  105: void qemu_chr_info(Monitor *mon, QObject **ret_data);
  106: CharDriverState *qemu_chr_find(const char *name);
  107: 
  108: /* add an eventfd to the qemu devices that are polled */
  109: CharDriverState *qemu_chr_open_eventfd(int eventfd);
  110: 
  111: extern int term_escape_char;
  112: 
  113: /* memory chardev */
  114: void qemu_chr_init_mem(CharDriverState *chr);
  115: void qemu_chr_close_mem(CharDriverState *chr);
  116: QString *qemu_chr_mem_to_qs(CharDriverState *chr);
  117: size_t qemu_chr_mem_osize(const CharDriverState *chr);
  118: 
  119: /* async I/O support */
  120: 
  121: int qemu_set_fd_handler2(int fd,
  122:                          IOCanReadHandler *fd_read_poll,
  123:                          IOHandler *fd_read,
  124:                          IOHandler *fd_write,
  125:                          void *opaque);
  126: int qemu_set_fd_handler(int fd,
  127:                         IOHandler *fd_read,
  128:                         IOHandler *fd_write,
  129:                         void *opaque);
  130: #endif

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