sys/bus/isa/amd64/isa.c

   1 /*-
   2  * Copyright (c) 1998 Doug Rabson
   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 AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER 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  * $FreeBSD: src/sys/i386/isa/isa.c,v 1.132.2.5 2002/03/03 05:42:50 nyan Exp $
  27  * $DragonFly: src/sys/bus/isa/amd64/isa.c,v 1.1 2008/08/02 05:22:17 dillon Exp $
  28  */
  29
  30 /*
  31  * Modifications for Intel architecture by Garrett A. Wollman.
  32  * Copyright 1998 Massachusetts Institute of Technology
  33  *
  34  * Permission to use, copy, modify, and distribute this software and
  35  * its documentation for any purpose and without fee is hereby
  36  * granted, provided that both the above copyright notice and this
  37  * permission notice appear in all copies, that both the above
  38  * copyright notice and this permission notice appear in all
  39  * supporting documentation, and that the name of M.I.T. not be used
  40  * in advertising or publicity pertaining to distribution of the
  41  * software without specific, written prior permission.  M.I.T. makes
  42  * no representations about the suitability of this software for any
  43  * purpose.  It is provided "as is" without express or implied
  44  * warranty.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
  47  * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
  48  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  49  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
  50  * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  51  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  52  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  53  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  54  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  55  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  56  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  */
  59
  60 #include <sys/param.h>
  61 #include <sys/bus.h>
  62 #include <sys/malloc.h>
  63 #include <sys/rman.h>
  64
  65 #include "../isavar.h"
  66 #include "../isa_common.h"
  67
  68 #include "opt_compat_oldisa.h"
  69
  70 void
  71 isa_init(void)
  72 {
  73 #ifdef COMPAT_OLDISA
  74         isa_wrap_old_drivers();
  75 #endif
  76 }
  77
  78 /*
  79  * This implementation simply passes the request up to the parent
  80  * bus, which in our case is the special i386 nexus, substituting any
  81  * configured values if the caller defaulted.  We can get away with
  82  * this because there is no special mapping for ISA resources on an Intel
  83  * platform.  When porting this code to another architecture, it may be
  84  * necessary to interpose a mapping layer here.
  85  */
  86 struct resource *
  87 isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
  88                    u_long start, u_long end, u_long count, u_int flags)
  89 {
  90         /*
  91          * Consider adding a resource definition. We allow rid 0-1 for
  92          * irq and drq, 0-3 for memory and 0-7 for ports which is
  93          * sufficient for isapnp.
  94          */
  95         int passthrough = (device_get_parent(child) != bus);
  96         int isdefault = (start == 0UL && end == ~0UL);
  97         struct isa_device* idev = DEVTOISA(child);
  98         struct resource_list *rl = &idev->id_resources;
  99         struct resource_list_entry *rle;
 100
 101         if (!passthrough && !isdefault) {
 102                 rle = resource_list_find(rl, type, *rid);
 103                 if (!rle) {
 104                         if (*rid < 0)
 105                                 return 0;
 106                         switch (type) {
 107                         case SYS_RES_IRQ:
 108                                 if (*rid >= ISA_NIRQ)
 109                                         return 0;
 110                                 break;
 111                         case SYS_RES_DRQ:
 112                                 if (*rid >= ISA_NDRQ)
 113                                         return 0;
 114                                 break;
 115                         case SYS_RES_MEMORY:
 116                                 if (*rid >= ISA_NMEM)
 117                                         return 0;
 118                                 break;
 119                         case SYS_RES_IOPORT:
 120                                 if (*rid >= ISA_NPORT)
 121                                         return 0;
 122                                 break;
 123                         default:
 124                                 return 0;
 125                         }
 126                         resource_list_add(rl, type, *rid, start, end, count);
 127                 }
 128         }
 129
 130         return resource_list_alloc(rl, bus, child, type, rid,
 131                                    start, end, count, flags);
 132 }
 133
 134 int
 135 isa_release_resource(device_t bus, device_t child, int type, int rid,
 136                      struct resource *r)
 137 {
 138         struct isa_device* idev = DEVTOISA(child);
 139         struct resource_list *rl = &idev->id_resources;
 140
 141         return resource_list_release(rl, bus, child, type, rid, r);
 142 }
 143
 144 /*
 145  * We can't use the bus_generic_* versions of these methods because those
 146  * methods always pass the bus param as the requesting device, and we need
 147  * to pass the child (the i386 nexus knows about this and is prepared to
 148  * deal).
 149  */
 150 int
 151 isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
 152                void (*ihand)(void *), void *arg,
 153                void **cookiep, lwkt_serialize_t serializer)
 154 {
 155         return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
 156                                ihand, arg, cookiep, serializer));
 157 }
 158
 159 int
 160 isa_teardown_intr(device_t bus, device_t child, struct resource *r,
 161                   void *cookie)
 162 {
 163         return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
 164 }