The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/sentry5/obio.c

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    1 /*      $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $  */
    2 
    3 /*-
    4  * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 /*
   39  * On-board device autoconfiguration support for Broadcom Sentry5
   40  * based boards.
   41  * XXX This is totally bogus and is just enough to get the console hopefully
   42  * running on the sentry5.
   43  */
   44 
   45 #include <sys/cdefs.h>
   46 __FBSDID("$FreeBSD: stable/8/sys/mips/sentry5/obio.c 215938 2010-11-27 12:26:40Z jchandra $");
   47 
   48 #include <sys/param.h>
   49 #include <sys/systm.h>
   50 #include <sys/bus.h>
   51 #include <sys/kernel.h>
   52 #include <sys/module.h>
   53 #include <sys/rman.h>
   54 #include <sys/malloc.h>
   55 
   56 #include <machine/bus.h>
   57 
   58 #include <mips/sentry5/obiovar.h>
   59 #include <mips/sentry5/sentry5reg.h>
   60 
   61 int     obio_probe(device_t);
   62 int     obio_attach(device_t);
   63 
   64 /*
   65  * A bit tricky and hackish. Since we need OBIO to rely
   66  * on PCI we make it pseudo-pci device. But there should 
   67  * be only one such device, so we use this static flag 
   68  * to prevent false positives on every realPCI device probe. 
   69  */
   70 static int have_one = 0;
   71 
   72 int
   73 obio_probe(device_t dev)
   74 {
   75         if (!have_one) {
   76                 have_one = 1;
   77                 return 0;
   78         }
   79         return (ENXIO);
   80 }
   81 
   82 int
   83 obio_attach(device_t dev)
   84 {
   85         struct obio_softc *sc = device_get_softc(dev);
   86 
   87         sc->oba_st = MIPS_BUS_SPACE_IO;
   88         sc->oba_addr = MIPS_PHYS_TO_KSEG1(SENTRY5_UART1ADR);
   89         sc->oba_size = 0x03FFFFFF;      /* XXX sb pci bus 0 aperture size? */
   90         sc->oba_rman.rm_type = RMAN_ARRAY;
   91         sc->oba_rman.rm_descr = "OBIO I/O";
   92         if (rman_init(&sc->oba_rman) != 0 ||
   93             rman_manage_region(&sc->oba_rman,
   94             sc->oba_addr, sc->oba_addr + sc->oba_size) != 0)
   95                 panic("obio_attach: failed to set up I/O rman");
   96         sc->oba_irq_rman.rm_type = RMAN_ARRAY;
   97         sc->oba_irq_rman.rm_descr = "OBIO IRQ";
   98 
   99         /* 
  100          * This module is intended for UART purposes only and
  101          * it's IRQ is 4
  102          */
  103         if (rman_init(&sc->oba_irq_rman) != 0 ||
  104             rman_manage_region(&sc->oba_irq_rman, 4, 4) != 0)
  105                 panic("obio_attach: failed to set up IRQ rman");
  106 
  107         device_add_child(dev, "uart", 0);
  108         bus_generic_probe(dev);
  109         bus_generic_attach(dev);
  110 
  111         return (0);
  112 }
  113 
  114 static struct resource *
  115 obio_alloc_resource(device_t bus, device_t child, int type, int *rid,
  116     u_long start, u_long end, u_long count, u_int flags)
  117 {
  118         struct resource *rv;
  119         struct rman *rm;
  120         bus_space_handle_t bh = 0;
  121         struct obio_softc *sc = device_get_softc(bus);
  122 
  123         switch (type) {
  124         case SYS_RES_IRQ:
  125                 rm = &sc->oba_irq_rman;
  126                 break;
  127         case SYS_RES_MEMORY:
  128                 return (NULL);
  129         case SYS_RES_IOPORT:
  130                 rm = &sc->oba_rman;
  131                 bh = sc->oba_addr;
  132                 start = bh;
  133                 break;
  134         default:
  135                 return (NULL);
  136         }
  137 
  138 
  139         rv = rman_reserve_resource(rm, start, end, count, flags, child);
  140         if (rv == NULL) 
  141                 return (NULL);
  142         if (type == SYS_RES_IRQ)
  143                 return (rv);
  144         rman_set_rid(rv, *rid);
  145         rman_set_bustag(rv, mips_bus_space_generic);
  146         rman_set_bushandle(rv, bh);
  147         
  148         if (0) {
  149                 if (bus_activate_resource(child, type, *rid, rv)) {
  150                         rman_release_resource(rv);
  151                         return (NULL);
  152                 }
  153         }
  154         return (rv);
  155 
  156 }
  157 
  158 static int
  159 obio_activate_resource(device_t bus, device_t child, int type, int rid,
  160     struct resource *r)
  161 {
  162         return (0);
  163 }
  164 static device_method_t obio_methods[] = {
  165         DEVMETHOD(device_probe, obio_probe),
  166         DEVMETHOD(device_attach, obio_attach),
  167 
  168         DEVMETHOD(bus_alloc_resource, obio_alloc_resource),
  169         DEVMETHOD(bus_activate_resource, obio_activate_resource),
  170         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
  171         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  172 
  173         {0, 0},
  174 };
  175 
  176 static driver_t obio_driver = {
  177         "obio",
  178         obio_methods,
  179         sizeof(struct obio_softc),
  180 };
  181 static devclass_t obio_devclass;
  182 
  183 DRIVER_MODULE(obio, pci, obio_driver, obio_devclass, 0, 0);

Cache object: 23e4cc037c9814983a49589b9d2e4f4b


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