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 1.7 2003/11/22 19:48:32 asmodai 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 <machine/bus.h>
  37 #include <sys/rman.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 <machine/resource.h>
  46 #include "../isavar.h"
  47 #include "isa_compat.h"
  48 #include "isa_device.h"
  49
  50 struct isa_compat_resources {
  51     struct resource *ports;
  52     struct resource *memory;
  53     struct resource *drq;
  54     struct resource *irq;
  55 };
  56
  57 int
  58 isa_compat_nextid(void)
  59 {
  60         static int id = 2;      /* id_id of -1, 0 and 1 are "used" */
  61
  62         return id++;
  63 }
  64
  65 static void
  66 isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
  67 {
  68         int rid;
  69         u_long start, count;
  70
  71         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
  72                              &start, &count) == 0) {
  73                 rid = 0;
  74                 res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
  75                                                 &rid, 0ul, ~0ul, 1,
  76                                                 RF_ACTIVE);
  77                 if (res->ports == NULL && bootverbose)
  78                         printf("isa_compat: didn't get ports for %s\n",
  79                                device_get_name(dev));
  80         } else
  81                 res->ports = 0;
  82
  83         if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
  84                              &start, &count) == 0
  85             && start != 0) {
  86                 rid = 0;
  87                 res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
  88                                                  &rid, 0ul, ~0ul, 1,
  89                                                  RF_ACTIVE);
  90                 if (res->memory == NULL && bootverbose)
  91                         printf("isa_compat: didn't get memory for %s\n",
  92                                device_get_name(dev));
  93         } else
  94                 res->memory = 0;
  95
  96         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
  97                              &start, &count) == 0) {
  98                 rid = 0;
  99                 res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
 100                                               &rid, 0ul, ~0ul, 1,
 101                                               RF_ACTIVE);
 102                 if (res->drq == NULL && bootverbose)
 103                         printf("isa_compat: didn't get drq for %s\n",
 104                                device_get_name(dev));
 105         } else
 106                 res->drq = 0;
 107
 108         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 109                              &start, &count) == 0) {
 110                 rid = 0;
 111                 res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
 112                                               &rid, 0ul, ~0ul, 1,
 113                                               RF_SHAREABLE | RF_ACTIVE);
 114                 if (res->irq == NULL && bootverbose)
 115                         printf("isa_compat: didn't get irq for %s\n",
 116                                device_get_name(dev));
 117         } else
 118                 res->irq = 0;
 119 }
 120
 121 static void
 122 isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
 123 {
 124         if (res->ports) {
 125                 bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
 126                 res->ports = 0;
 127         }
 128         if (res->memory) {
 129                 bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
 130                 res->memory = 0;
 131         }
 132         if (res->drq) {
 133                 bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
 134                 res->drq = 0;
 135         }
 136         if (res->irq) {
 137                 bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
 138                 res->irq = 0;
 139         }
 140 }
 141
 142 #define irqmask(x)      ((x) < 0 ? 0 : (1 << (x)))
 143
 144 static int
 145 isa_compat_probe(device_t dev)
 146 {
 147         struct isa_device *dvp = device_get_softc(dev);
 148         struct isa_compat_resources res;
 149         struct old_isa_driver *op;
 150         u_long start, count;
 151
 152         /* No pnp support */
 153         if (isa_get_vendorid(dev))
 154                 return (ENXIO);
 155
 156         bzero(&res, sizeof(res));
 157         /*
 158          * Fill in the isa_device fields.
 159          */
 160         op = device_get_driver(dev)->priv;
 161         dvp->id_id = isa_compat_nextid();
 162         dvp->id_driver = op->driver;
 163         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
 164                              &start, &count) == 0)
 165                 dvp->id_iobase = start;
 166         else
 167                 dvp->id_iobase = -1;
 168         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 169                              &start, &count) == 0)
 170                 dvp->id_irq = irqmask(start);
 171         else
 172                 dvp->id_irq = 0;
 173         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 174                              &start, &count) == 0)
 175                 dvp->id_drq = start;
 176         else
 177                 dvp->id_drq = -1;
 178         if (bus_get_resource(dev, SYS_RES_MEMORY,
 179                              0, &start, &count) == 0) {
 180                 dvp->id_maddr = (void *)(uintptr_t)start;
 181                 dvp->id_msize = count;
 182         } else {
 183                 dvp->id_maddr = NULL;
 184                 dvp->id_msize = 0;
 185         }
 186         dvp->id_unit = device_get_unit(dev);
 187         dvp->id_flags = device_get_flags(dev);
 188         dvp->id_enabled = device_is_enabled(dev);       /* XXX unused */
 189         dvp->id_device = dev;
 190
 191         /*
 192          * Do the wrapped probe.
 193          */
 194         if (dvp->id_driver->probe) {
 195                 int portsize;
 196                 void *maddr;
 197                 struct isa_device old;
 198
 199                 isa_compat_alloc_resources(dev, &res);
 200                 if (res.memory)
 201                         maddr = rman_get_virtual(res.memory);
 202                 else
 203                         maddr = 0;
 204                 dvp->id_maddr = maddr;
 205                 old = *dvp;
 206                 portsize = dvp->id_driver->probe(dvp);
 207                 isa_compat_release_resources(dev, &res);
 208                 if (portsize != 0) {
 209                         if (portsize > 0 || dvp->id_iobase != old.id_iobase)
 210                                 bus_set_resource(dev, SYS_RES_IOPORT,
 211                                                  0, dvp->id_iobase, portsize);
 212                         if (dvp->id_irq != old.id_irq)
 213                                 bus_set_resource(dev, SYS_RES_IRQ, 0,
 214                                                  ffs(dvp->id_irq) - 1, 1);
 215                         if (dvp->id_drq != old.id_drq)
 216                                 bus_set_resource(dev, SYS_RES_DRQ, 0,
 217                                                  dvp->id_drq, 1);
 218                         if (dvp->id_maddr != old.id_maddr
 219                             || dvp->id_msize != old.id_msize) {
 220                                 maddr = dvp->id_maddr;
 221                                 if (maddr != NULL)
 222                                         bus_set_resource(dev,
 223                                                          SYS_RES_MEMORY,
 224                                                          0,
 225                                                          kvtop(maddr),
 226                                                          dvp->id_msize);
 227                                 else
 228                                         bus_delete_resource(dev,
 229                                                             SYS_RES_MEMORY,
 230                                                             0);
 231                         }
 232                         return 0;
 233                 }
 234         }
 235         return ENXIO;
 236 }
 237
 238 static int
 239 isa_compat_attach(device_t dev)
 240 {
 241         struct isa_device *dvp = device_get_softc(dev);
 242         struct isa_compat_resources res;
 243         int error;
 244
 245         bzero(&res, sizeof(res));
 246         isa_compat_alloc_resources(dev, &res);
 247         if (dvp->id_driver->attach)
 248                 dvp->id_driver->attach(dvp);
 249         if (res.irq && dvp->id_irq && dvp->id_intr) {
 250                 struct old_isa_driver *op;
 251                 void *ih;
 252
 253                 op = device_get_driver(dev)->priv;
 254                 error = BUS_SETUP_INTR(device_get_parent(dev), dev,
 255                                        res.irq, op->type,
 256                                        dvp->id_intr,
 257                                        (void *)(uintptr_t)dvp->id_unit,
 258                                        &ih);
 259                 if (error)
 260                         printf("isa_compat_attach: failed to setup intr: %d\n",
 261                                error);
 262         }
 263         device_printf(dev, "driver is using old-style compatibility shims\n");
 264         return 0;
 265 }
 266
 267 static device_method_t isa_compat_methods[] = {
 268         /* Device interface */
 269         DEVMETHOD(device_probe,         isa_compat_probe),
 270         DEVMETHOD(device_attach,        isa_compat_attach),
 271
 272         { 0, 0 }
 273 };
 274
 275 /*
 276  * Create a new style driver around each old isa driver.
 277  */
 278 void
 279 isa_wrap_old_drivers(void)
 280 {
 281         int i;
 282         struct old_isa_driver *op;
 283         devclass_t isa_devclass = devclass_find("isa");
 284
 285         for (i = 0, op = &old_drivers[0]; i < old_drivers_count; i++, op++) {
 286                 driver_t *driver;
 287                 driver = malloc(sizeof(driver_t), M_DEVBUF, M_NOWAIT | M_ZERO);
 288                 if (!driver)
 289                         continue;
 290                 driver->name = op->driver->name;
 291                 driver->methods = isa_compat_methods;
 292                 driver->size = sizeof(struct isa_device);
 293                 driver->priv = op;
 294                 if (op->driver->sensitive_hw)
 295                         resource_set_int(op->driver->name, -1, "sensitive", 1);
 296                 devclass_add_driver(isa_devclass, driver);
 297         }
 298 }