uart_bus_puc.c revision 256281
1/*- 2 * Copyright (c) 2006 Marcel Moolenaar. All rights reserved. 3 * Copyright (c) 2002 JF Hay. All rights reserved. 4 * Copyright (c) 2001 M. Warner Losh. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 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 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: stable/10/sys/dev/uart/uart_bus_puc.c 158124 2006-04-28 21:21:53Z marcel $"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/conf.h> 34#include <sys/kernel.h> 35#include <sys/module.h> 36 37#include <machine/bus.h> 38#include <sys/rman.h> 39#include <machine/resource.h> 40 41#include <dev/puc/puc_bus.h> 42 43#include <dev/uart/uart.h> 44#include <dev/uart/uart_bus.h> 45 46static int uart_puc_probe(device_t dev); 47 48static device_method_t uart_puc_methods[] = { 49 /* Device interface */ 50 DEVMETHOD(device_probe, uart_puc_probe), 51 DEVMETHOD(device_attach, uart_bus_attach), 52 DEVMETHOD(device_detach, uart_bus_detach), 53 /* Serdev interface */ 54 DEVMETHOD(serdev_ihand, uart_bus_ihand), 55 DEVMETHOD(serdev_ipend, uart_bus_ipend), 56 { 0, 0 } 57}; 58 59static driver_t uart_puc_driver = { 60 uart_driver_name, 61 uart_puc_methods, 62 sizeof(struct uart_softc), 63}; 64 65static int 66uart_puc_probe(device_t dev) 67{ 68 device_t parent; 69 struct uart_softc *sc; 70 uintptr_t rclk, type; 71 72 parent = device_get_parent(dev); 73 sc = device_get_softc(dev); 74 75 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type)) 76 return (ENXIO); 77 if (type != PUC_TYPE_SERIAL) 78 return (ENXIO); 79 80 sc->sc_class = &uart_ns8250_class; 81 82 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk)) 83 rclk = 0; 84 return (uart_bus_probe(dev, 0, rclk, 0, 0)); 85} 86 87DRIVER_MODULE(uart, puc, uart_puc_driver, uart_devclass, 0, 0); 88