1 /* 2 * Copyright (c) 2003 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _DEV_UART_CPU_H_ 30 #define _DEV_UART_CPU_H_ 31 32 /* 33 * Low-level operations for use by console and/or debug port support. 34 */ 35 struct uart_ops { 36 int (*probe)(struct uart_bas *); 37 void (*init)(struct uart_bas *, int, int, int, int); 38 void (*term)(struct uart_bas *); 39 void (*putc)(struct uart_bas *, int); 40 int (*poll)(struct uart_bas *); 41 int (*getc)(struct uart_bas *); 42 }; 43 44 extern struct uart_ops uart_i8251_ops; 45 extern struct uart_ops uart_ns8250_ops; 46 extern struct uart_ops uart_sab82532_ops; 47 extern struct uart_ops uart_z8530_ops; 48 49 /* 50 * Console and debug port device info. 51 */ 52 struct uart_softc; 53 struct uart_devinfo { 54 SLIST_ENTRY(uart_devinfo) next; 55 struct uart_ops ops; 56 struct uart_bas bas; 57 int baudrate; 58 int databits; 59 int stopbits; 60 int parity; 61 int type; 62 #define UART_DEV_CONSOLE 0 63 #define UART_DEV_DBGPORT 1 64 #define UART_DEV_KEYBOARD 2 65 int (*attach)(struct uart_softc*); 66 int (*detach)(struct uart_softc*); 67 void *cookie; /* Type dependent use. */ 68 }; 69 70 int uart_cpu_eqres(struct uart_bas *, struct uart_bas *); 71 int uart_cpu_getdev(int, struct uart_devinfo *); 72 73 void uart_add_sysdev(struct uart_devinfo*); 74 75 /* 76 * Operations for low-level access to the UART. Primarily for use 77 * by console and debug port logic. 78 */ 79 static __inline int 80 uart_probe(struct uart_devinfo *di) 81 { 82 return (di->ops.probe(&di->bas)); 83 } 84 85 static __inline void 86 uart_init(struct uart_devinfo *di) 87 { 88 di->ops.init(&di->bas, di->baudrate, di->databits, di->stopbits, 89 di->parity); 90 } 91 92 static __inline void 93 uart_term(struct uart_devinfo *di) 94 { 95 di->ops.term(&di->bas); 96 } 97 98 static __inline void 99 uart_putc(struct uart_devinfo *di, int c) 100 { 101 di->ops.putc(&di->bas, c); 102 } 103 104 static __inline int 105 uart_poll(struct uart_devinfo *di) 106 { 107 return (di->ops.poll(&di->bas)); 108 } 109 110 static __inline int 111 uart_getc(struct uart_devinfo *di) 112 { 113 return (di->ops.getc(&di->bas)); 114 } 115 116 #endif /* _DEV_UART_CPU_H_ */ 117