sys/arch/i386/eisa/eisa_machdep.c

   1 /*      $NetBSD: eisa_machdep.c,v 1.33 2009/11/17 23:46:27 dyoung Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by Christopher G. Demetriou
  47  *      for the NetBSD Project.
  48  * 4. The name of the author may not be used to endorse or promote products
  49  *    derived from this software without specific prior written permission
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  52  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  53  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  54  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  55  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  56  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  60  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 /*
  64  * Machine-specific functions for EISA autoconfiguration.
  65  */
  66
  67 #include <sys/cdefs.h>
  68 __KERNEL_RCSID(0, "$NetBSD: eisa_machdep.c,v 1.33 2009/11/17 23:46:27 dyoung Exp $");
  69
  70 #include "ioapic.h"
  71
  72 #include <sys/types.h>
  73 #include <sys/param.h>
  74 #include <sys/time.h>
  75 #include <sys/systm.h>
  76 #include <sys/errno.h>
  77 #include <sys/device.h>
  78
  79 #include <machine/bus.h>
  80 #include <machine/bus_private.h>
  81
  82 #include <dev/isa/isareg.h>
  83 #include <dev/isa/isavar.h>
  84 #include <dev/eisa/eisavar.h>
  85
  86 #if NIOAPIC > 0
  87 #include <machine/i82093var.h>
  88 #include <machine/mpbiosvar.h>
  89 #endif
  90
  91 /*
  92  * EISA doesn't have any special needs; just use the generic versions
  93  * of these funcions.
  94  */
  95 struct x86_bus_dma_tag eisa_bus_dma_tag = {
  96         0,                      /* _tag_needs_free */
  97         0,                      /* _bounce_thresh */
  98         0,                      /* _bounce_alloc_lo */
  99         0,                      /* _bounce_alloc_hi */
 100         NULL,                   /* _may_bounce */
 101         _bus_dmamap_create,
 102         _bus_dmamap_destroy,
 103         _bus_dmamap_load,
 104         _bus_dmamap_load_mbuf,
 105         _bus_dmamap_load_uio,
 106         _bus_dmamap_load_raw,
 107         _bus_dmamap_unload,
 108         NULL,                   /* _dmamap_sync */
 109         _bus_dmamem_alloc,
 110         _bus_dmamem_free,
 111         _bus_dmamem_map,
 112         _bus_dmamem_unmap,
 113         _bus_dmamem_mmap,
 114         _bus_dmatag_subregion,
 115         _bus_dmatag_destroy,
 116 };
 117
 118 void
 119 eisa_attach_hook(device_t parent, device_t self,
 120     struct eisabus_attach_args *eba)
 121 {
 122         extern int eisa_has_been_seen;
 123
 124         /*
 125          * Notify others that might need to know that the EISA bus
 126          * has now been attached.
 127          */
 128         if (eisa_has_been_seen)
 129                 panic("eisaattach: EISA bus already seen!");
 130         eisa_has_been_seen = 1;
 131 }
 132
 133 int
 134 eisa_maxslots(eisa_chipset_tag_t ec)
 135 {
 136
 137         /*
 138          * Always try 16 slots.
 139          */
 140         return (16);
 141 }
 142
 143 int
 144 eisa_intr_map(eisa_chipset_tag_t ec, u_int irq,
 145     eisa_intr_handle_t *ihp)
 146 {
 147         if (irq >= NUM_LEGACY_IRQS) {
 148                 aprint_error("eisa_intr_map: bad IRQ %d\n", irq);
 149                 *ihp = -1;
 150                 return 1;
 151         }
 152         if (irq == 2) {
 153                 aprint_verbose("eisa_intr_map: changed IRQ 2 to IRQ 9\n");
 154                 irq = 9;
 155         }
 156
 157 #if NIOAPIC > 0
 158         if (mp_busses != NULL) {
 159                 if (intr_find_mpmapping(mp_eisa_bus, irq, ihp) == 0 ||
 160                     intr_find_mpmapping(mp_isa_bus, irq, ihp) == 0) {
 161                         *ihp |= irq;
 162                         return 0;
 163                 } else
 164                         aprint_verbose("eisa_intr_map: no MP mapping found\n");
 165         }
 166 #endif
 167
 168         *ihp = irq;
 169         return 0;
 170 }
 171
 172 const char *
 173 eisa_intr_string(eisa_chipset_tag_t ec, eisa_intr_handle_t ih)
 174 {
 175         static char irqstr[8];          /* 4 + 2 + NULL + sanity */
 176
 177         if (ih == 0 || (ih & 0xff) >= NUM_LEGACY_IRQS || ih == 2)
 178                 panic("eisa_intr_string: bogus handle 0x%x", ih);
 179
 180 #if NIOAPIC > 0
 181         if (ih & APIC_INT_VIA_APIC)
 182                 snprintf(irqstr, sizeof(irqstr), "apic %d int %d (irq %d)",
 183                     APIC_IRQ_APIC(ih),
 184                     APIC_IRQ_PIN(ih),
 185                     ih&0xff);
 186         else
 187                 snprintf(irqstr, sizeof(irqstr), "irq %d", ih&0xff);
 188 #else
 189         snprintf(irqstr, sizeof(irqstr), "irq %d", ih);
 190 #endif
 191         return (irqstr);
 192
 193 }
 194
 195 const struct evcnt *
 196 eisa_intr_evcnt(eisa_chipset_tag_t ec, eisa_intr_handle_t ih)
 197 {
 198
 199         /* XXX for now, no evcnt parent reported */
 200         return NULL;
 201 }
 202
 203 void *
 204 eisa_intr_establish(eisa_chipset_tag_t ec, eisa_intr_handle_t ih,
 205     int type, int level, int (*func)(void *), void *arg)
 206 {
 207         int pin, irq;
 208         struct pic *pic;
 209
 210         pic = &i8259_pic;
 211         pin = irq = ih;
 212
 213 #if NIOAPIC > 0
 214         if (ih & APIC_INT_VIA_APIC) {
 215                 pic = (struct pic *)ioapic_find(APIC_IRQ_APIC(ih));
 216                 if (pic == NULL) {
 217                         aprint_error("eisa_intr_establish: bad ioapic %d\n",
 218                             APIC_IRQ_APIC(ih));
 219                         return NULL;
 220                 }
 221                 pin = APIC_IRQ_PIN(ih);
 222                 irq = APIC_IRQ_LEGACY_IRQ(ih);
 223                 if (irq < 0 || irq >= NUM_LEGACY_IRQS)
 224                         irq = -1;
 225         }
 226 #endif
 227
 228         return intr_establish(irq, pic, pin, type, level, func, arg, false);
 229 }
 230
 231 void
 232 eisa_intr_disestablish(eisa_chipset_tag_t ec, void *cookie)
 233 {
 234
 235         intr_disestablish(cookie);
 236 }
 237
 238 int
 239 eisa_conf_read_mem(eisa_chipset_tag_t ec, int slot,
 240     int func, int entry, struct eisa_cfg_mem *ecm)
 241 {
 242
 243         /* XXX XXX XXX */
 244         return (ENOENT);
 245 }
 246
 247 int
 248 eisa_conf_read_irq(eisa_chipset_tag_t ec, int slot,
 249     int func, int entry, struct eisa_cfg_irq *eci)
 250 {
 251
 252         /* XXX XXX XXX */
 253         return (ENOENT);
 254 }
 255
 256 int
 257 eisa_conf_read_dma(eisa_chipset_tag_t ec, int slot,
 258     int func, int entry, struct eisa_cfg_dma *ecd)
 259 {
 260
 261         /* XXX XXX XXX */
 262         return (ENOENT);
 263 }
 264
 265 int
 266 eisa_conf_read_io(eisa_chipset_tag_t ec, int slot,
 267     int func, int entry, struct eisa_cfg_io *ecio)
 268 {
 269
 270         /* XXX XXX XXX */
 271         return (ENOENT);
 272 }