81174dae3f
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
88 lines
2.8 KiB
C
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
|