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/arm/xscale/i80321/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 Intel IQ80321
   40  * evaluation boards.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __FBSDID("$FreeBSD$");
   45 
   46 #include <sys/param.h>
   47 #include <sys/systm.h>
   48 #include <sys/bus.h>
   49 #include <sys/kernel.h>
   50 #include <sys/module.h>
   51 #define __RMAN_RESOURCE_VISIBLE
   52 #include <sys/rman.h>
   53 #include <sys/malloc.h>
   54 
   55 #include <machine/bus.h>
   56 
   57 #include <arm/xscale/i80321/i80321reg.h>
   58 
   59 #include <arm/xscale/i80321/iq80321reg.h>
   60 #include <arm/xscale/i80321/obiovar.h>
   61 
   62 int     obio_probe(device_t);
   63 int     obio_attach(device_t);
   64 
   65 int
   66 obio_probe(device_t dev)
   67 {
   68         return (0);
   69 }
   70 
   71 int
   72 obio_attach(device_t dev)
   73 {
   74         struct obio_softc *sc = device_get_softc(dev);
   75 
   76         sc->oba_st = &obio_bs_tag;
   77         sc->oba_addr = IQ80321_OBIO_BASE;
   78         sc->oba_size = IQ80321_OBIO_SIZE;
   79         sc->oba_rman.rm_type = RMAN_ARRAY;
   80         sc->oba_rman.rm_descr = "OBIO I/O";
   81         if (rman_init(&sc->oba_rman) != 0 ||
   82             rman_manage_region(&sc->oba_rman,
   83             sc->oba_addr, sc->oba_addr + sc->oba_size) != 0)
   84                 panic("obio_attach: failed to set up I/O rman");
   85         device_add_child(dev, "uart", 0);
   86         bus_generic_probe(dev);
   87         bus_generic_attach(dev);
   88         return (0);
   89 }
   90 
   91 static struct resource *
   92 obio_alloc_resource(device_t bus, device_t child, int type, int *rid,
   93     u_long start, u_long end, u_long count, u_int flags)
   94 {
   95         struct resource *rv;
   96         struct rman *rm;
   97         bus_space_tag_t bt;
   98         bus_space_handle_t bh;
   99         struct obio_softc *sc = device_get_softc(bus);
  100 
  101         if (type == SYS_RES_IRQ) {
  102                 rv = malloc(sizeof(*rv), M_DEVBUF, M_WAITOK);
  103                 rv->r_start = 28;
  104                 rv->r_end = 28;
  105                 rv->r_rid = *rid;
  106                 return (rv);
  107         }
  108         switch (type) {
  109         case SYS_RES_MEMORY:
  110                 return (NULL);
  111         case SYS_RES_IOPORT:
  112                 rm = &sc->oba_rman;
  113                 bt = sc->oba_st;
  114                 bh = sc->oba_addr;
  115                 break;
  116         default:
  117                 return (NULL);
  118         }
  119 
  120         start = bh;
  121 
  122         rv = rman_reserve_resource(rm, start, end, count, flags, child);
  123         if (rv == NULL) 
  124                 return (NULL);
  125         rman_set_rid(rv, *rid);
  126         rman_set_bustag(rv, bt);
  127         rman_set_bushandle(rv, bh);
  128         
  129         if (0) {
  130                 if (bus_activate_resource(child, type, *rid, rv)) {
  131                         rman_release_resource(rv);
  132                         return (NULL);
  133                 }
  134         }
  135         return (rv);
  136 
  137 }
  138 
  139 static int
  140 obio_activate_resource(device_t bus, device_t child, int type, int rid,
  141     struct resource *r)
  142 {
  143         return (0);
  144 }
  145 static device_method_t obio_methods[] = {
  146         DEVMETHOD(device_probe, obio_probe),
  147         DEVMETHOD(device_attach, obio_attach),
  148 
  149         DEVMETHOD(bus_alloc_resource, obio_alloc_resource),
  150         DEVMETHOD(bus_activate_resource, obio_activate_resource),
  151         DEVMETHOD(bus_setup_intr,       bus_generic_setup_intr),
  152         DEVMETHOD(bus_teardown_intr,    bus_generic_teardown_intr),
  153 
  154         {0, 0},
  155 };
  156 
  157 static driver_t obio_driver = {
  158         "obio",
  159         obio_methods,
  160         sizeof(struct obio_softc),
  161 };
  162 static devclass_t obio_devclass;
  163 
  164 DRIVER_MODULE(obio, iq, obio_driver, obio_devclass, 0, 0);

Cache object: af9faee9b3ce547cd66ce516d5c4b9a1


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