sys/arch/evbarm/tsarm/isa/isa_machdep.c

   1 /*      $NetBSD: isa_machdep.c,v 1.9 2009/08/18 17:02:00 dyoung Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1996-1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jesse Off
   9  *
  10  * This code is derived from software contributed to The NetBSD Foundation
  11  * by Mark Brinicombe, Charles M. Hannum and by Jason R. Thorpe of the
  12  * Numerical Aerospace Simulation Facility, NASA Ames Research Center.
  13  *
  14  * Redistribution and use in source and binary forms, with or without
  15  * modification, are permitted provided that the following conditions
  16  * are met:
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in the
  21  *    documentation and/or other materials provided with the distribution.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /*-
  37  * Copyright (c) 1991 The Regents of the University of California.
  38  * All rights reserved.
  39  *
  40  * This code is derived from software contributed to Berkeley by
  41  * William Jolitz.
  42  *
  43  * Redistribution and use in source and binary forms, with or without
  44  * modification, are permitted provided that the following conditions
  45  * are met:
  46  * 1. Redistributions of source code must retain the above copyright
  47  *    notice, this list of conditions and the following disclaimer.
  48  * 2. Redistributions in binary form must reproduce the above copyright
  49  *    notice, this list of conditions and the following disclaimer in the
  50  *    documentation and/or other materials provided with the distribution.
  51  * 3. Neither the name of the University nor the names of its contributors
  52  *    may be used to endorse or promote products derived from this software
  53  *    without specific prior written permission.
  54  *
  55  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  56  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  57  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  58  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  59  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  60  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  61  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  62  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  63  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  64  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  65  * SUCH DAMAGE.
  66  *
  67  *      @(#)isa.c       7.2 (Berkeley) 5/13/91
  68  */
  69
  70 #include <sys/cdefs.h>
  71 __KERNEL_RCSID(0, "$NetBSD: isa_machdep.c,v 1.9 2009/08/18 17:02:00 dyoung Exp $");
  72
  73 #include "opt_irqstats.h"
  74
  75 #include <sys/param.h>
  76 #include <sys/systm.h>
  77 #include <sys/kernel.h>
  78 #include <sys/syslog.h>
  79 #include <sys/device.h>
  80 #include <sys/malloc.h>
  81 #include <sys/proc.h>
  82
  83 #include <machine/bus.h>
  84
  85 #include <machine/intr.h>
  86 #include <machine/pio.h>
  87 #include <machine/bootconfig.h>
  88 #include <machine/isa_machdep.h>
  89
  90 #include <dev/isa/isareg.h>
  91 #include <dev/isa/isavar.h>
  92
  93 #include <arm/ep93xx/ep93xxvar.h>
  94 #include <uvm/uvm_extern.h>
  95
  96 /* prototypes */
  97 void isa_tsarm_init(u_int, u_int);
  98 struct arm32_isa_chipset isa_chipset_tag;
  99
 100 static unsigned int ep93xxirq[3] = { 20, 33, 40 };
 101 /* only have 3 irqs connected to real lines on TS-7xxx */
 102 static unsigned int isairq[3] = { 5, 6, 7 };
 103 static unsigned int isairq_nhandlers[3] = { 0, 0, 0 };
 104
 105 int
 106 isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq)
 107 {
 108         int i, bestirq, count;
 109
 110         if (type == IST_NONE)
 111                 panic("intr_alloc: bogus type");
 112
 113         bestirq = -1;
 114         count = -1;
 115
 116         /* some interrupts should never be dynamically allocated */
 117         mask &= 0x00e0;
 118
 119         for (i = 0; i < sizeof(isairq); i++) {
 120                 if ((mask & (1<<isairq[i])) == 0)
 121                         continue;
 122                 if (isairq_nhandlers[i] < count || count == -1) {
 123                         bestirq = isairq[i];
 124                         count = isairq_nhandlers[i];
 125                 }
 126         }
 127
 128         if (bestirq == -1)
 129                 return (1);
 130
 131         *irq = bestirq;
 132
 133         return (0);
 134 }
 135
 136 const struct evcnt *
 137 isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
 138 {
 139         return NULL;
 140 }
 141
 142 /*
 143  * Set up an interrupt handler to start being called.
 144  */
 145 void *
 146 isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, int level, int (*ih_fun)(void *), void *ih_arg)
 147 {
 148         int epirq = -1, i;
 149         /* Find real EP93XX irq number */
 150         for(i = 0; i < sizeof(isairq); i++) {
 151                 if (irq == isairq[i]) epirq = ep93xxirq[i];
 152         }
 153
 154         if (epirq == -1)
 155                 return NULL;
 156         else
 157                 return (ep93xx_intr_establish(epirq, level, ih_fun, ih_arg));
 158 }
 159
 160 /*
 161  * Deregister an interrupt handler.
 162  */
 163 void
 164 isa_intr_disestablish(isa_chipset_tag_t ic, void *arg)
 165 {
 166         ep93xx_intr_disestablish(arg);
 167 }
 168
 169 void
 170 isa_tsarm_init(u_int iobase16, u_int membase16)
 171 {
 172         isa_io_init(iobase16, membase16);
 173 }
 174
 175
 176 /*
 177  * isa_intr_init()
 178  *
 179  * TODO: Set up ISA IRQ 5 on GPIO pin
 180  */
 181 void
 182 isa_intr_init(void)
 183 {
 184 }
 185
 186 void
 187 isa_attach_hook(struct device *parent, struct device *self, struct isabus_attach_args *iba)
 188 {
 189         /*
 190          * Since we can only have one ISA bus, we just use a single
 191          * statically allocated ISA chipset structure.  Pass it up
 192          * now.
 193          */
 194         iba->iba_ic = &isa_chipset_tag;
 195         printf(": PC/104 expansion bus");
 196 }
 197
 198 void
 199 isa_detach_hook(isa_chipset_tag_t ic, device_t self)
 200 {
 201 }