sys/bus/isa/i386/isa_compat.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_compat.c,v 1.18.2.1 2001/05/17 23:05:06 imp Exp $
  27  * $DragonFly: src/sys/bus/isa/i386/isa_compat.c,v 1.12 2006/12/22 23:12:16 swildner Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/bus.h>
  34 #include <sys/malloc.h>
  35 #include <sys/module.h>
  36 #include <sys/rman.h>
  37 #include <sys/machintr.h>
  38
  39 #include <machine/vmparam.h>
  40 #include <vm/vm.h>
  41 #include <vm/pmap.h>
  42 #include <machine/pmap.h>
  43 #include <machine/md_var.h>
  44
  45 #include "../isavar.h"
  46 #include "isa_compat.h"
  47 #include "isa_device.h"
  48
  49 struct isa_compat_resources {
  50     struct resource *ports;
  51     struct resource *memory;
  52     struct resource *drq;
  53     struct resource *irq;
  54 };
  55
  56 struct isa_compat_driver {
  57         driver_t driver;
  58         struct old_isa_driver *op;
  59 };
  60
  61 int
  62 isa_compat_nextid(void)
  63 {
  64         static int id = 2;      /* id_id of -1, 0 and 1 are "used" */
  65
  66         return id++;
  67 }
  68
  69 static void
  70 isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
  71 {
  72         int rid;
  73         u_long start, count;
  74
  75         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
  76                              &start, &count) == 0) {
  77                 rid = 0;
  78                 res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
  79                                                 &rid, 0ul, ~0ul, 1,
  80                                                 RF_ACTIVE);
  81                 if (res->ports == NULL && bootverbose)
  82                         kprintf("isa_compat: didn't get ports for %s\n",
  83                                device_get_name(dev));
  84         } else
  85                 res->ports = 0;
  86
  87         if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
  88                              &start, &count) == 0
  89             && start != 0) {
  90                 rid = 0;
  91                 res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
  92                                                  &rid, 0ul, ~0ul, 1,
  93                                                  RF_ACTIVE);
  94                 if (res->memory == NULL && bootverbose)
  95                         kprintf("isa_compat: didn't get memory for %s\n",
  96                                device_get_name(dev));
  97         } else
  98                 res->memory = 0;
  99
 100         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 101                              &start, &count) == 0) {
 102                 rid = 0;
 103                 res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
 104                                               &rid, 0ul, ~0ul, 1,
 105                                               RF_ACTIVE);
 106                 if (res->drq == NULL && bootverbose)
 107                         kprintf("isa_compat: didn't get drq for %s\n",
 108                                device_get_name(dev));
 109         } else
 110                 res->drq = 0;
 111
 112         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 113                              &start, &count) == 0) {
 114                 rid = 0;
 115                 res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
 116                                               &rid, 0ul, ~0ul, 1,
 117                                               RF_SHAREABLE | RF_ACTIVE);
 118                 if (res->irq == NULL && bootverbose)
 119                         kprintf("isa_compat: didn't get irq for %s\n",
 120                                device_get_name(dev));
 121         } else
 122                 res->irq = 0;
 123 }
 124
 125 static void
 126 isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
 127 {
 128         if (res->ports) {
 129                 bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
 130                 res->ports = 0;
 131         }
 132         if (res->memory) {
 133                 bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
 134                 res->memory = 0;
 135         }
 136         if (res->drq) {
 137                 bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
 138                 res->drq = 0;
 139         }
 140         if (res->irq) {
 141                 bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
 142                 res->irq = 0;
 143         }
 144 }
 145
 146 #define irqmask(x)      ((x) < 0 ? 0 : (1 << (x)))
 147
 148 static int
 149 isa_compat_probe(device_t dev)
 150 {
 151         struct isa_device *dvp = device_get_softc(dev);
 152         struct isa_compat_resources res;
 153         struct old_isa_driver *op;
 154         u_long start, count;
 155
 156         /* No pnp support */
 157         if (isa_get_vendorid(dev))
 158                 return (ENXIO);
 159
 160         bzero(&res, sizeof(res));
 161         /*
 162          * Fill in the isa_device fields.
 163          */
 164         op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 165         dvp->id_id = isa_compat_nextid();
 166         dvp->id_driver = op->driver;
 167         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
 168                              &start, &count) == 0)
 169                 dvp->id_iobase = start;
 170         else
 171                 dvp->id_iobase = -1;
 172         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 173                              &start, &count) == 0)
 174                 dvp->id_irq = irqmask(start);
 175         else
 176                 dvp->id_irq = 0;
 177         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 178                              &start, &count) == 0)
 179                 dvp->id_drq = start;
 180         else
 181                 dvp->id_drq = -1;
 182         if (bus_get_resource(dev, SYS_RES_MEMORY,
 183                              0, &start, &count) == 0) {
 184                 dvp->id_maddr = (void *)(uintptr_t)start;
 185                 dvp->id_msize = count;
 186         } else {
 187                 dvp->id_maddr = NULL;
 188                 dvp->id_msize = 0;
 189         }
 190         dvp->id_unit = device_get_unit(dev);
 191         dvp->id_flags = device_get_flags(dev);
 192         dvp->id_enabled = device_is_enabled(dev);       /* XXX unused */
 193         dvp->id_device = dev;
 194
 195         /*
 196          * Do the wrapped probe.
 197          */
 198         if (dvp->id_driver->probe) {
 199                 int portsize;
 200                 void *maddr;
 201                 struct isa_device old;
 202
 203                 isa_compat_alloc_resources(dev, &res);
 204                 if (res.memory)
 205                         maddr = rman_get_virtual(res.memory);
 206                 else
 207                         maddr = 0;
 208                 dvp->id_maddr = maddr;
 209                 old = *dvp;
 210                 portsize = dvp->id_driver->probe(dvp);
 211                 isa_compat_release_resources(dev, &res);
 212                 if (portsize != 0) {
 213                         if (portsize > 0 || dvp->id_iobase != old.id_iobase) {
 214                                 bus_set_resource(dev, SYS_RES_IOPORT, 0,
 215                                     dvp->id_iobase, portsize, -1);
 216                         }
 217                         if (dvp->id_irq != old.id_irq) {
 218                                 int intr = ffs(dvp->id_irq) - 1;
 219
 220                                 bus_set_resource(dev, SYS_RES_IRQ, 0, intr, 1,
 221                                     machintr_intr_cpuid(intr));
 222                         }
 223                         if (dvp->id_drq != old.id_drq) {
 224                                 bus_set_resource(dev, SYS_RES_DRQ, 0,
 225                                     dvp->id_drq, 1, -1);
 226                         }
 227                         if (dvp->id_maddr != old.id_maddr
 228                             || dvp->id_msize != old.id_msize) {
 229                                 maddr = dvp->id_maddr;
 230                                 if (maddr != NULL) {
 231                                         bus_set_resource(dev, SYS_RES_MEMORY, 0,
 232                                             kvtop(maddr), dvp->id_msize, -1);
 233                                 } else {
 234                                         bus_delete_resource(dev,
 235                                             SYS_RES_MEMORY, 0);
 236                                 }
 237                         }
 238                         return 0;
 239                 }
 240         }
 241         return ENXIO;
 242 }
 243
 244 static int
 245 isa_compat_attach(device_t dev)
 246 {
 247         struct isa_device *dvp = device_get_softc(dev);
 248         struct isa_compat_resources res;
 249         int error;
 250
 251         bzero(&res, sizeof(res));
 252         isa_compat_alloc_resources(dev, &res);
 253         if (dvp->id_driver->attach)
 254                 dvp->id_driver->attach(dvp);
 255         if (res.irq && dvp->id_irq && dvp->id_intr) {
 256                 struct old_isa_driver *op;
 257                 void *ih;
 258
 259                 op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 260                 error = BUS_SETUP_INTR(device_get_parent(dev), dev,
 261                                        res.irq, op->type,
 262                                        dvp->id_intr,
 263                                        (void *)(uintptr_t)dvp->id_unit,
 264                                        &ih, NULL);
 265                 if (error)
 266                         kprintf("isa_compat_attach: failed to setup intr: %d\n",
 267                                error);
 268         }
 269         device_printf(dev, "driver is using old-style compatibility shims\n");
 270         return 0;
 271 }
 272
 273 static device_method_t isa_compat_methods[] = {
 274         /* Device interface */
 275         DEVMETHOD(device_probe,         isa_compat_probe),
 276         DEVMETHOD(device_attach,        isa_compat_attach),
 277
 278         { 0, 0 }
 279 };
 280
 281 /*
 282  * Create a new style driver around each old isa driver.
 283  */
 284 void
 285 isa_wrap_old_drivers(void)
 286 {
 287         int i;
 288         struct old_isa_driver *op;
 289         devclass_t isa_devclass = devclass_find("isa");
 290         struct isa_compat_driver *driver;
 291
 292         for (i = 0, op = &old_drivers[0]; i < old_drivers_count; i++, op++) {
 293                 driver = kmalloc(sizeof(struct isa_compat_driver), M_DEVBUF, M_WAITOK | M_ZERO);
 294                 driver->driver.name = op->driver->name;
 295                 driver->driver.methods = isa_compat_methods;
 296                 driver->driver.size = sizeof(struct isa_device);
 297                 driver->op = op;
 298                 if (op->driver->sensitive_hw)
 299                         resource_set_int(op->driver->name, -1, "sensitive", 1);
 300                 devclass_add_driver(isa_devclass, (driver_t *)driver);
 301         }
 302 }