uart_bus_rc32434.c revision 182901
1/*- 2 * Copyright (c) 2007 Bruce M. Simpson. 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 * 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 AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * $Id$ 25 */ 26/* 27 * Skeleton of this file was based on respective code for ARM 28 * code written by Olivier Houchard. 29 */ 30 31/* 32 * XXXMIPS: This file is hacked from arm/... . XXXMIPS here means this file is 33 * experimental and was written for MIPS32 port. 34 */ 35#include "opt_uart.h" 36 37#include <sys/cdefs.h> 38__FBSDID("$FreeBSD: head/sys/mips/idt/uart_bus_rc32434.c 182901 2008-09-10 03:49:08Z gonzo $"); 39 40#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/bus.h> 43#include <sys/conf.h> 44#include <sys/kernel.h> 45#include <sys/module.h> 46#include <machine/bus.h> 47#include <sys/rman.h> 48#include <machine/resource.h> 49#include <mips/idt/idtreg.h> 50 51#include <dev/pci/pcivar.h> 52 53#include <dev/uart/uart.h> 54#include <dev/uart/uart_bus.h> 55#include <dev/uart/uart_cpu.h> 56 57#include <dev/ic/ns16550.h> 58 59#include "uart_if.h" 60 61static int uart_rc32434_probe(device_t dev); 62 63extern struct uart_class uart_rc32434_uart_class; 64 65static device_method_t uart_rc32434_methods[] = { 66 /* Device interface */ 67 DEVMETHOD(device_probe, uart_rc32434_probe), 68 DEVMETHOD(device_attach, uart_bus_attach), 69 DEVMETHOD(device_detach, uart_bus_detach), 70 { 0, 0 } 71}; 72 73static driver_t uart_rc32434_driver = { 74 uart_driver_name, 75 uart_rc32434_methods, 76 sizeof(struct uart_softc), 77}; 78 79extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs; 80 81static int 82uart_rc32434_probe(device_t dev) 83{ 84 struct uart_softc *sc; 85 86 sc = device_get_softc(dev); 87 sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs); 88 sc->sc_class = &uart_ns8250_class; 89 bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas)); 90 sc->sc_sysdev->bas.regshft = 2; 91 sc->sc_sysdev->bas.bst = 0; 92 sc->sc_sysdev->bas.bsh = MIPS_PHYS_TO_KSEG1(IDT_BASE_UART0); 93 sc->sc_bas.regshft = 2; 94 sc->sc_bas.bst = 0; 95 sc->sc_bas.bsh = MIPS_PHYS_TO_KSEG1(IDT_BASE_UART0); 96 97 return (uart_bus_probe(dev, 2, 330000000UL/2, 0, 0)); 98} 99 100DRIVER_MODULE(uart, obio, uart_rc32434_driver, uart_devclass, 0, 0); 101