qemu/qemu-char.h
aliguori 81174dae3f Upgrade emulated UART to 16550A (Stefano Stabellini)
This patch upgrades the emulated UART to 16550A, the code comes from
xen-unstable. The main improvement was introduced with the following patch and
subsequent email thread:

http://lists.xensource.com/archives/html/xen-devel/2007-12/msg00129.html

The changes compared to previous version are:

- change clock_gettime to qemu_get_clock

- no token bucket anymore;

- fixed a small bug handling IRQs; this was the problem that prevented
kgdb to work over the serial (thanks to Jason Wessel for the help
spotting and reproducing this bug).

- many many style fixes;

- savevm version number increased;

- not including termios.h and sys/ioctl.h anymore, declaring static
constants in qemu-char.h instead;

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4993 c046a42c-6fe2-441c-8c8c-71466251a162
2008-08-11 14:17:04 +00:00

88 lines
2.8 KiB
C

#ifndef QEMU_CHAR_H
#define QEMU_CHAR_H
/* character device */
#define CHR_EVENT_BREAK 0 /* serial break char */
#define CHR_EVENT_FOCUS 1 /* focus to this terminal (modal input needed) */
#define CHR_EVENT_RESET 2 /* new connection established */
#define CHR_IOCTL_SERIAL_SET_PARAMS 1
typedef struct {
int speed;
int parity;
int data_bits;
int stop_bits;
} QEMUSerialSetParams;
#define CHR_IOCTL_SERIAL_SET_BREAK 2
#define CHR_IOCTL_PP_READ_DATA 3
#define CHR_IOCTL_PP_WRITE_DATA 4
#define CHR_IOCTL_PP_READ_CONTROL 5
#define CHR_IOCTL_PP_WRITE_CONTROL 6
#define CHR_IOCTL_PP_READ_STATUS 7
#define CHR_IOCTL_PP_EPP_READ_ADDR 8
#define CHR_IOCTL_PP_EPP_READ 9
#define CHR_IOCTL_PP_EPP_WRITE_ADDR 10
#define CHR_IOCTL_PP_EPP_WRITE 11
#define CHR_IOCTL_SERIAL_SET_TIOCM 12
#define CHR_IOCTL_SERIAL_GET_TIOCM 13
#define CHR_TIOCM_CTS 0x020
#define CHR_TIOCM_CAR 0x040
#define CHR_TIOCM_DSR 0x100
#define CHR_TIOCM_RI 0x080
#define CHR_TIOCM_DTR 0x002
#define CHR_TIOCM_RTS 0x004
typedef void IOEventHandler(void *opaque, int event);
struct CharDriverState {
int (*chr_write)(struct CharDriverState *s, const uint8_t *buf, int len);
void (*chr_update_read_handler)(struct CharDriverState *s);
int (*chr_ioctl)(struct CharDriverState *s, int cmd, void *arg);
IOEventHandler *chr_event;
IOCanRWHandler *chr_can_read;
IOReadHandler *chr_read;
void *handler_opaque;
void (*chr_send_event)(struct CharDriverState *chr, int event);
void (*chr_close)(struct CharDriverState *chr);
void (*chr_accept_input)(struct CharDriverState *chr);
void *opaque;
int focus;
QEMUBH *bh;
};
CharDriverState *qemu_chr_open(const char *filename);
void qemu_chr_close(CharDriverState *chr);
void qemu_chr_printf(CharDriverState *s, const char *fmt, ...);
int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len);
void qemu_chr_send_event(CharDriverState *s, int event);
void qemu_chr_add_handlers(CharDriverState *s,
IOCanRWHandler *fd_can_read,
IOReadHandler *fd_read,
IOEventHandler *fd_event,
void *opaque);
int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg);
void qemu_chr_reset(CharDriverState *s);
int qemu_chr_can_read(CharDriverState *s);
void qemu_chr_read(CharDriverState *s, uint8_t *buf, int len);
void qemu_chr_accept_input(CharDriverState *s);
/* async I/O support */
int qemu_set_fd_handler2(int fd,
IOCanRWHandler *fd_read_poll,
IOHandler *fd_read,
IOHandler *fd_write,
void *opaque);
int qemu_set_fd_handler(int fd,
IOHandler *fd_read,
IOHandler *fd_write,
void *opaque);
#endif