uart_bus_puc.c revision 120452
1/*- 2 * Copyright (c) 2002 JF Hay. All rights reserved. 3 * Copyright (c) 2001 M. Warner Losh. 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_puc.c 120452 2003-09-26 05:14:56Z marcel $"); 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/bus.h> 32#include <sys/conf.h> 33#include <sys/kernel.h> 34#include <sys/module.h> 35#include <machine/bus.h> 36#include <sys/rman.h> 37#include <machine/resource.h> 38 39#include <dev/pci/pcivar.h> 40#include <dev/puc/pucvar.h> 41 42#include <dev/uart/uart.h> 43#include <dev/uart/uart_bus.h> 44 45static int uart_puc_probe(device_t dev); 46 47static device_method_t uart_puc_methods[] = { 48 /* Device interface */ 49 DEVMETHOD(device_probe, uart_puc_probe), 50 DEVMETHOD(device_attach, uart_bus_attach), 51 DEVMETHOD(device_detach, uart_bus_detach), 52 { 0, 0 } 53}; 54 55static driver_t uart_puc_driver = { 56 uart_driver_name, 57 uart_puc_methods, 58 sizeof(struct uart_softc), 59}; 60 61static int 62uart_puc_probe(device_t dev) 63{ 64 device_t parent; 65 struct uart_softc *sc; 66 uintptr_t port, rclk, regshft, type; 67 68 parent = device_get_parent(dev); 69 sc = device_get_softc(dev); 70 71 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_SUBTYPE, &type)) 72 return (ENXIO); 73 switch (type) { 74 case PUC_PORT_UART_NS8250: 75 sc->sc_class = &uart_ns8250_class; 76 port = 0; 77 break; 78 case PUC_PORT_UART_SAB82532: 79 sc->sc_class = &uart_sab82532_class; 80 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_PORT, &port)) 81 port = 0; 82 break; 83 case PUC_PORT_UART_Z8530: 84 sc->sc_class = &uart_z8530_class; 85 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_PORT, &port)) 86 port = 0; 87 break; 88 default: 89 return (ENXIO); 90 } 91 92 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_FREQ, &rclk)) 93 rclk = 0; 94 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_REGSHFT, ®shft)) 95 regshft = 0; 96 return (uart_bus_probe(dev, regshft, rclk, 0, port)); 97} 98 99DRIVER_MODULE(uart, puc, uart_puc_driver, uart_devclass, 0, 0); 100