diff options
Diffstat (limited to 'sys/dev/uart/uart_cpu.h')
| -rw-r--r-- | sys/dev/uart/uart_cpu.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sys/dev/uart/uart_cpu.h b/sys/dev/uart/uart_cpu.h new file mode 100644 index 0000000..f124aa7 --- /dev/null +++ b/sys/dev/uart/uart_cpu.h @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2003 Marcel Moolenaar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _DEV_UART_CPU_H_ +#define _DEV_UART_CPU_H_ + +/* + * Low-level operations for use by console and/or debug port support. + */ +struct uart_ops { + int (*probe)(struct uart_bas *); + void (*init)(struct uart_bas *, int, int, int, int); + void (*term)(struct uart_bas *); + void (*putc)(struct uart_bas *, int); + int (*poll)(struct uart_bas *); + int (*getc)(struct uart_bas *); +}; + +extern struct uart_ops uart_i8251_ops; +extern struct uart_ops uart_ns8250_ops; +extern struct uart_ops uart_sab82532_ops; +extern struct uart_ops uart_z8530_ops; + +/* + * Console and debug port device info. + */ +struct uart_softc; +struct uart_devinfo { + SLIST_ENTRY(uart_devinfo) next; + struct uart_ops ops; + struct uart_bas bas; + int baudrate; + int databits; + int stopbits; + int parity; + int type; +#define UART_DEV_CONSOLE 0 +#define UART_DEV_DBGPORT 1 +#define UART_DEV_KEYBOARD 2 + int (*attach)(struct uart_softc*); + int (*detach)(struct uart_softc*); + void *cookie; /* Type dependent use. */ +}; + +int uart_cpu_eqres(struct uart_bas *, struct uart_bas *); +int uart_cpu_getdev(int, struct uart_devinfo *); + +void uart_add_sysdev(struct uart_devinfo*); + +/* + * Operations for low-level access to the UART. Primarily for use + * by console and debug port logic. + */ +static __inline int +uart_probe(struct uart_devinfo *di) +{ + return (di->ops.probe(&di->bas)); +} + +static __inline void +uart_init(struct uart_devinfo *di) +{ + di->ops.init(&di->bas, di->baudrate, di->databits, di->stopbits, + di->parity); +} + +static __inline void +uart_term(struct uart_devinfo *di) +{ + di->ops.term(&di->bas); +} + +static __inline void +uart_putc(struct uart_devinfo *di, int c) +{ + di->ops.putc(&di->bas, c); +} + +static __inline int +uart_poll(struct uart_devinfo *di) +{ + return (di->ops.poll(&di->bas)); +} + +static __inline int +uart_getc(struct uart_devinfo *di) +{ + return (di->ops.getc(&di->bas)); +} + +#endif /* _DEV_UART_CPU_H_ */ |
