+int sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data);
+int sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data);
+int sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data);
+int sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data);
+int sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand, u8 myor);
+int sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor);
+int sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand);
+
+int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data);
+int sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data);
+int sisusb_writew(struct sisusb_usb_data *sisusb, u32 adr, u16 data);
+int sisusb_readw(struct sisusb_usb_data *sisusb, u32 adr, u16 *data);
+int sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
+ u32 dest, int length, size_t *bytes_written);
+
+int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init);
+
+extern int SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo);
+extern int SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo);
+
+extern void sisusb_init_concode(void);
+extern int sisusb_console_init(struct sisusb_usb_data *sisusb, int first, int last);
+extern void sisusb_console_exit(struct sisusb_usb_data *sisusb);
+
+extern void sisusb_set_cursor(struct sisusb_usb_data *sisusb, unsigned int location);
+
+extern int sisusbcon_do_font_op(struct sisusb_usb_data *sisusb, int set, int slot,
+ u8 *arg, int cmapsz, int ch512, int dorecalc,
+ struct vc_data *c, int fh, int uplock);
+