proto_bus_isa.c

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    1 /*-
    2  * Copyright (c) 2015 Marcel Moolenaar
    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 BE LIABLE FOR ANY DIRECT, INDIRECT,
   18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   24  */
   25 
   26 #include <sys/cdefs.h>
   27 __FBSDID("$FreeBSD$");
   28 
   29 #include <sys/param.h>
   30 #include <sys/systm.h>
   31 #include <sys/bus.h>
   32 #include <sys/conf.h>
   33 #include <sys/kernel.h>
   34 #include <sys/module.h>
   35 #include <machine/bus.h>
   36 #include <sys/rman.h>
   37 #include <machine/resource.h>
   38 #include <sys/sbuf.h>
   39 
   40 #include <isa/isavar.h>
   41 #include <isa/pnpvar.h>
   42 
   43 #include <dev/proto/proto.h>
   44 
   45 static int proto_isa_probe(device_t dev);
   46 static int proto_isa_attach(device_t dev);
   47 
   48 static device_method_t proto_isa_methods[] = {
   49         /* Device interface */
   50         DEVMETHOD(device_probe,         proto_isa_probe),
   51         DEVMETHOD(device_attach,        proto_isa_attach),
   52         DEVMETHOD(device_detach,        proto_detach),
   53         DEVMETHOD_END
   54 };
   55 
   56 static driver_t proto_isa_driver = {
   57         proto_driver_name,
   58         proto_isa_methods,
   59         sizeof(struct proto_softc),
   60 };
   61 
   62 static char proto_isa_prefix[] = "isa";
   63 static char **proto_isa_devnames;
   64 
   65 static int
   66 proto_isa_probe(device_t dev)
   67 {
   68         struct sbuf *sb;
   69         struct resource *res;
   70         int rid, type;
   71 
   72         rid = 0;
   73         type = SYS_RES_IOPORT;
   74         res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
   75         if (res == NULL) {
   76                 type = SYS_RES_MEMORY;
   77                 res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
   78         }
   79         if (res == NULL)
   80                 return (ENODEV);
   81 
   82         sb = sbuf_new_auto();
   83         sbuf_printf(sb, "%s:%#jx", proto_isa_prefix, rman_get_start(res));
   84         sbuf_finish(sb);
   85         device_set_desc_copy(dev, sbuf_data(sb));
   86         sbuf_delete(sb);
   87         bus_release_resource(dev, type, rid, res);
   88         return (proto_probe(dev, proto_isa_prefix, &proto_isa_devnames));
   89 }
   90 
   91 static int
   92 proto_isa_alloc(device_t dev, int type, int nrids)
   93 {
   94         struct resource *res;
   95         struct proto_softc *sc;
   96         int count, rid;
   97 
   98         sc = device_get_softc(dev);
   99         count = 0;
  100         for (rid = 0; rid < nrids; rid++) {
  101                 res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
  102                 if (res == NULL)
  103                         break;
  104                 proto_add_resource(sc, type, rid, res);
  105                 count++;
  106         }
  107         if (type == SYS_RES_DRQ && count > 0)
  108                 proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL);
  109         return (count);
  110 }
  111 
  112 static int
  113 proto_isa_attach(device_t dev)
  114 {
  115 
  116         proto_isa_alloc(dev, SYS_RES_IRQ, ISA_NIRQ);
  117         proto_isa_alloc(dev, SYS_RES_DRQ, ISA_NDRQ);
  118         proto_isa_alloc(dev, SYS_RES_IOPORT, ISA_NPORT);
  119         proto_isa_alloc(dev, SYS_RES_MEMORY, ISA_NMEM);
  120         return (proto_attach(dev));
  121 }
  122 
  123 DRIVER_MODULE(proto, acpi, proto_isa_driver, NULL, NULL);
  124 DRIVER_MODULE(proto, isa, proto_isa_driver, NULL, NULL);

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FreeBSD/Linux Kernel Cross Reference sys/dev/proto/proto_bus_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/proto/proto_bus_isa.c