1 /*- 2 * Copyright (c) 2001 by Thomas Moestl <[email protected]>. 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 ``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 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 21 * 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 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/bus.h> 33 #include <sys/kernel.h> 34 #include <sys/module.h> 35 36 #include <dev/ofw/ofw_bus.h> 37 38 #include <machine/bus.h> 39 #include <sys/rman.h> 40 #include <machine/resource.h> 41 #include <machine/ver.h> 42 43 #include <dev/uart/uart.h> 44 #include <dev/uart/uart_bus.h> 45 #include <dev/uart/uart_cpu.h> 46 47 static int uart_ebus_probe(device_t dev); 48 49 static device_method_t uart_ebus_methods[] = { 50 /* Device interface */ 51 DEVMETHOD(device_probe, uart_ebus_probe), 52 DEVMETHOD(device_attach, uart_bus_attach), 53 DEVMETHOD(device_detach, uart_bus_detach), 54 { 0, 0 } 55 }; 56 57 static driver_t uart_ebus_driver = { 58 uart_driver_name, 59 uart_ebus_methods, 60 sizeof(struct uart_softc), 61 }; 62 63 static int 64 uart_ebus_probe(device_t dev) 65 { 66 const char *nm, *cmpt; 67 struct uart_softc *sc; 68 struct uart_devinfo dummy; 69 70 sc = device_get_softc(dev); 71 sc->sc_class = NULL; 72 73 nm = ofw_bus_get_name(dev); 74 cmpt = ofw_bus_get_compat(dev); 75 if (cmpt == NULL) 76 cmpt = ""; 77 if (!strcmp(nm, "lom-console") || !strcmp(nm, "su") || 78 !strcmp(nm, "su_pnp") || !strcmp(cmpt, "rsc-console") || 79 !strcmp(cmpt, "rsc-control") || !strcmp(cmpt, "su") || 80 !strcmp(cmpt, "su16550") || !strcmp(cmpt, "su16552")) { 81 /* 82 * On AXi and AXmp boards the NS16550 (used to connect 83 * keyboard/mouse) share their IRQ lines with the i8042. 84 * Any IRQ activity (typically during attach) of the 85 * NS16550 used to connect the keyboard when actually the 86 * PS/2 keyboard is selected in OFW causes interaction 87 * with the OBP i8042 driver resulting in a hang and vice 88 * versa. As RS232 keyboards and mice obviously aren't 89 * meant to be used in parallel with PS/2 ones on these 90 * boards don't attach to the NS16550 in case the RS232 91 * keyboard isn't selected in order to prevent such hangs. 92 */ 93 if ((!strcmp(sparc64_model, "SUNW,UltraAX-MP") || 94 !strcmp(sparc64_model, "SUNW,UltraSPARC-IIi-Engine")) && 95 uart_cpu_getdev(UART_DEV_KEYBOARD, &dummy)) { 96 device_disable(dev); 97 return (ENXIO); 98 } 99 sc->sc_class = &uart_ns8250_class; 100 return (uart_bus_probe(dev, 0, 0, 0, 0)); 101 } 102 103 return (ENXIO); 104 } 105 106 DRIVER_MODULE(uart, ebus, uart_ebus_driver, uart_devclass, 0, 0); 107