uart_bus_ebus.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
    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: releng/8.4/sys/dev/uart/uart_bus_ebus.c 202262 2010-01-13 21:21:29Z marius $");
   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);

Cache object: d012041530da2c4a8a2becd6694a0c26

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/dev/uart/uart_bus_ebus.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/uart/uart_bus_ebus.c