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	typedef void (uart_intr_func_t)(void arg);			typedef void (uart_intr_func_t)(void arg);
	struct uart_softc *uart_init(uart_intr_func_t intr_assert,			struct uart_softc *uart_init(uart_intr_func_t intr_assert,
	uart_intr_func_t intr_deassert, void *arg);			uart_intr_func_t intr_deassert, void *arg);

	int uart_legacy_alloc(int unit, int ioaddr, int irq);			int uart_legacy_alloc(int unit, int ioaddr, int irq);
	uint8_t uart_read(struct uart_softc *sc, int offset);			uint8_t uart_read(struct uart_softc *sc, int offset);
	void uart_write(struct uart_softc *sc, int offset, uint8_t value);			void uart_write(struct uart_softc *sc, int offset, uint8_t value);
	int uart_set_backend(struct uart_softc sc, const char opt);			int uart_set_backend(struct uart_softc sc, const char device);
	#ifdef BHYVE_SNAPSHOT			#ifdef BHYVE_SNAPSHOT
	int uart_snapshot(struct uart_softc sc, struct vm_snapshot_meta meta);			int uart_snapshot(struct uart_softc sc, struct vm_snapshot_meta meta);
	#endif			#endif
	#endif			#endif