1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Marcel Moolenaar. All rights reserved. 5 * Copyright (c) 2002 JF Hay. All rights reserved. 6 * Copyright (c) 2001 M. Warner Losh. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 39 #include <machine/bus.h> 40 #include <sys/rman.h> 41 #include <machine/resource.h> 42 43 #include <dev/puc/puc_bus.h> 44 45 #include <dev/uart/uart.h> 46 #include <dev/uart/uart_bus.h> 47 48 static int uart_puc_probe(device_t dev); 49 50 static device_method_t uart_puc_methods[] = { 51 /* Device interface */ 52 DEVMETHOD(device_probe, uart_puc_probe), 53 DEVMETHOD(device_attach, uart_bus_attach), 54 DEVMETHOD(device_detach, uart_bus_detach), 55 /* Serdev interface */ 56 DEVMETHOD(serdev_ihand, uart_bus_ihand), 57 DEVMETHOD(serdev_ipend, uart_bus_ipend), 58 { 0, 0 } 59 }; 60 61 static driver_t uart_puc_driver = { 62 uart_driver_name, 63 uart_puc_methods, 64 sizeof(struct uart_softc), 65 }; 66 67 static int 68 uart_puc_probe(device_t dev) 69 { 70 device_t parent; 71 struct uart_softc *sc; 72 uintptr_t rclk, type; 73 74 parent = device_get_parent(dev); 75 sc = device_get_softc(dev); 76 77 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type)) 78 return (ENXIO); 79 if (type != PUC_TYPE_SERIAL) 80 return (ENXIO); 81 82 sc->sc_class = &uart_ns8250_class; 83 84 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk)) 85 rclk = 0; 86 return (uart_bus_probe(dev, 0, 0, rclk, 0, 0, 0)); 87 } 88 89 DRIVER_MODULE(uart, puc, uart_puc_driver, uart_devclass, 0, 0); 90