Current Path : /sys/dev/uart/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/uart/uart_bus_ebus.c |
/*- * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/uart/uart_bus_ebus.c 200926 2009-12-23 22:31:43Z marius $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.h> #include <dev/ofw/ofw_bus.h> #include <machine/bus.h> #include <sys/rman.h> #include <machine/resource.h> #include <machine/ver.h> #include <dev/uart/uart.h> #include <dev/uart/uart_bus.h> #include <dev/uart/uart_cpu.h> static int uart_ebus_probe(device_t dev); static device_method_t uart_ebus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, uart_ebus_probe), DEVMETHOD(device_attach, uart_bus_attach), DEVMETHOD(device_detach, uart_bus_detach), { 0, 0 } }; static driver_t uart_ebus_driver = { uart_driver_name, uart_ebus_methods, sizeof(struct uart_softc), }; static int uart_ebus_probe(device_t dev) { const char *nm, *cmpt; struct uart_softc *sc; struct uart_devinfo dummy; sc = device_get_softc(dev); sc->sc_class = NULL; nm = ofw_bus_get_name(dev); cmpt = ofw_bus_get_compat(dev); if (cmpt == NULL) cmpt = ""; if (!strcmp(nm, "lom-console") || !strcmp(nm, "su") || !strcmp(nm, "su_pnp") || !strcmp(cmpt, "rsc-console") || !strcmp(cmpt, "rsc-control") || !strcmp(cmpt, "su") || !strcmp(cmpt, "su16550") || !strcmp(cmpt, "su16552")) { /* * On AXi and AXmp boards the NS16550 (used to connect * keyboard/mouse) share their IRQ lines with the i8042. * Any IRQ activity (typically during attach) of the * NS16550 used to connect the keyboard when actually the * PS/2 keyboard is selected in OFW causes interaction * with the OBP i8042 driver resulting in a hang and vice * versa. As RS232 keyboards and mice obviously aren't * meant to be used in parallel with PS/2 ones on these * boards don't attach to the NS16550 in case the RS232 * keyboard isn't selected in order to prevent such hangs. */ if ((!strcmp(sparc64_model, "SUNW,UltraAX-MP") || !strcmp(sparc64_model, "SUNW,UltraSPARC-IIi-Engine")) && uart_cpu_getdev(UART_DEV_KEYBOARD, &dummy)) { device_disable(dev); return (ENXIO); } sc->sc_class = &uart_ns8250_class; return (uart_bus_probe(dev, 0, 0, 0, 0)); } return (ENXIO); } DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0);