sys/bus/isa/x86_64/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  */
  28
  29 #include <sys/param.h>
  30 #include <sys/systm.h>
  31 #include <sys/kernel.h>
  32 #include <sys/bus.h>
  33 #include <sys/malloc.h>
  34 #include <sys/module.h>
  35 #include <sys/rman.h>
  36
  37 #include <machine/vmparam.h>
  38 #include <vm/vm.h>
  39 #include <vm/pmap.h>
  40 #include <machine/pmap.h>
  41 #include <machine/md_var.h>
  42
  43 #include "../isavar.h"
  44 #include "isa_compat.h"
  45 #include "isa_device.h"
  46
  47 struct isa_compat_resources {
  48     struct resource *ports;
  49     struct resource *memory;
  50     struct resource *drq;
  51     struct resource *irq;
  52 };
  53
  54 struct isa_compat_driver {
  55         driver_t driver;
  56         struct old_isa_driver *op;
  57 };
  58
  59 int
  60 isa_compat_nextid(void)
  61 {
  62         static int id = 2;      /* id_id of -1, 0 and 1 are "used" */
  63
  64         return id++;
  65 }
  66
  67 static void
  68 isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
  69 {
  70         int rid;
  71         u_long start, count;
  72
  73         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
  74                              &start, &count) == 0) {
  75                 rid = 0;
  76                 res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
  77                                                 &rid, 0ul, ~0ul, 1,
  78                                                 RF_ACTIVE);
  79                 if (res->ports == NULL && bootverbose)
  80                         kprintf("isa_compat: didn't get ports for %s\n",
  81                                device_get_name(dev));
  82         } else
  83                 res->ports = 0;
  84
  85         if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
  86                              &start, &count) == 0
  87             && start != 0) {
  88                 rid = 0;
  89                 res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
  90                                                  &rid, 0ul, ~0ul, 1,
  91                                                  RF_ACTIVE);
  92                 if (res->memory == NULL && bootverbose)
  93                         kprintf("isa_compat: didn't get memory for %s\n",
  94                                device_get_name(dev));
  95         } else
  96                 res->memory = 0;
  97
  98         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
  99                              &start, &count) == 0) {
 100                 rid = 0;
 101                 res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
 102                                               &rid, 0ul, ~0ul, 1,
 103                                               RF_ACTIVE);
 104                 if (res->drq == NULL && bootverbose)
 105                         kprintf("isa_compat: didn't get drq for %s\n",
 106                                device_get_name(dev));
 107         } else
 108                 res->drq = 0;
 109
 110         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 111                              &start, &count) == 0) {
 112                 rid = 0;
 113                 res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
 114                                               &rid, 0ul, ~0ul, 1,
 115                                               RF_SHAREABLE | RF_ACTIVE);
 116                 if (res->irq == NULL && bootverbose)
 117                         kprintf("isa_compat: didn't get irq for %s\n",
 118                                device_get_name(dev));
 119         } else
 120                 res->irq = 0;
 121 }
 122
 123 static void
 124 isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
 125 {
 126         if (res->ports) {
 127                 bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
 128                 res->ports = 0;
 129         }
 130         if (res->memory) {
 131                 bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
 132                 res->memory = 0;
 133         }
 134         if (res->drq) {
 135                 bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
 136                 res->drq = 0;
 137         }
 138         if (res->irq) {
 139                 bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
 140                 res->irq = 0;
 141         }
 142 }
 143
 144 #define irqmask(x)      ((x) < 0 ? 0 : (1 << (x)))
 145
 146 static int
 147 isa_compat_probe(device_t dev)
 148 {
 149         struct isa_device *dvp = device_get_softc(dev);
 150         struct isa_compat_resources res;
 151         struct old_isa_driver *op;
 152         u_long start, count;
 153
 154         /* No pnp support */
 155         if (isa_get_vendorid(dev))
 156                 return (ENXIO);
 157
 158         bzero(&res, sizeof(res));
 159         /*
 160          * Fill in the isa_device fields.
 161          */
 162         op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 163         dvp->id_id = isa_compat_nextid();
 164         dvp->id_driver = op->driver;
 165         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
 166                              &start, &count) == 0)
 167                 dvp->id_iobase = start;
 168         else
 169                 dvp->id_iobase = -1;
 170         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 171                              &start, &count) == 0)
 172                 dvp->id_irq = irqmask(start);
 173         else
 174                 dvp->id_irq = 0;
 175         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 176                              &start, &count) == 0)
 177                 dvp->id_drq = start;
 178         else
 179                 dvp->id_drq = -1;
 180         if (bus_get_resource(dev, SYS_RES_MEMORY,
 181                              0, &start, &count) == 0) {
 182                 dvp->id_maddr = (void *)(uintptr_t)start;
 183                 dvp->id_msize = count;
 184         } else {
 185                 dvp->id_maddr = NULL;
 186                 dvp->id_msize = 0;
 187         }
 188         dvp->id_unit = device_get_unit(dev);
 189         dvp->id_flags = device_get_flags(dev);
 190         dvp->id_enabled = device_is_enabled(dev);       /* XXX unused */
 191         dvp->id_device = dev;
 192
 193         /*
 194          * Do the wrapped probe.
 195          */
 196         if (dvp->id_driver->probe) {
 197                 int portsize;
 198                 void *maddr;
 199                 struct isa_device old;
 200
 201                 isa_compat_alloc_resources(dev, &res);
 202                 if (res.memory)
 203                         maddr = rman_get_virtual(res.memory);
 204                 else
 205                         maddr = 0;
 206                 dvp->id_maddr = maddr;
 207                 old = *dvp;
 208                 portsize = dvp->id_driver->probe(dvp);
 209                 isa_compat_release_resources(dev, &res);
 210                 if (portsize != 0) {
 211                         if (portsize > 0 || dvp->id_iobase != old.id_iobase)
 212                                 bus_set_resource(dev, SYS_RES_IOPORT,
 213                                                  0, dvp->id_iobase, portsize);
 214                         if (dvp->id_irq != old.id_irq)
 215                                 bus_set_resource(dev, SYS_RES_IRQ, 0,
 216                                                  ffs(dvp->id_irq) - 1, 1);
 217                         if (dvp->id_drq != old.id_drq)
 218                                 bus_set_resource(dev, SYS_RES_DRQ, 0,
 219                                                  dvp->id_drq, 1);
 220                         if (dvp->id_maddr != old.id_maddr
 221                             || dvp->id_msize != old.id_msize) {
 222                                 maddr = dvp->id_maddr;
 223                                 if (maddr != NULL)
 224                                         bus_set_resource(dev,
 225                                                          SYS_RES_MEMORY,
 226                                                          0,
 227                                                          kvtop(maddr),
 228                                                          dvp->id_msize);
 229                                 else
 230                                         bus_delete_resource(dev,
 231                                                             SYS_RES_MEMORY,
 232                                                             0);
 233                         }
 234                         return 0;
 235                 }
 236         }
 237         return ENXIO;
 238 }
 239
 240 static int
 241 isa_compat_attach(device_t dev)
 242 {
 243         struct isa_device *dvp = device_get_softc(dev);
 244         struct isa_compat_resources res;
 245         int error;
 246
 247         bzero(&res, sizeof(res));
 248         isa_compat_alloc_resources(dev, &res);
 249         if (dvp->id_driver->attach)
 250                 dvp->id_driver->attach(dvp);
 251         if (res.irq && dvp->id_irq && dvp->id_intr) {
 252                 struct old_isa_driver *op;
 253                 void *ih;
 254
 255                 op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 256                 error = BUS_SETUP_INTR(device_get_parent(dev), dev,
 257                                        res.irq, op->type,
 258                                        dvp->id_intr,
 259                                        (void *)(uintptr_t)dvp->id_unit,
 260                                        &ih, NULL);
 261                 if (error)
 262                         kprintf("isa_compat_attach: failed to setup intr: %d\n",
 263                                error);
 264         }
 265         device_printf(dev, "driver is using old-style compatibility shims\n");
 266         return 0;
 267 }
 268
 269 static device_method_t isa_compat_methods[] = {
 270         /* Device interface */
 271         DEVMETHOD(device_probe,         isa_compat_probe),
 272         DEVMETHOD(device_attach,        isa_compat_attach),
 273
 274         { 0, 0 }
 275 };
 276
 277 /*
 278  * Create a new style driver around each old isa driver.
 279  */
 280 void
 281 isa_wrap_old_drivers(void)
 282 {
 283         int i;
 284         struct old_isa_driver *op;
 285         devclass_t isa_devclass = devclass_find("isa");
 286         struct isa_compat_driver *driver;
 287
 288         for (i = 0, op = &old_drivers[0]; i < old_drivers_count; i++, op++) {
 289                 driver = kmalloc(sizeof(struct isa_compat_driver), M_DEVBUF, M_WAITOK | M_ZERO);
 290                 driver->driver.name = op->driver->name;
 291                 driver->driver.methods = isa_compat_methods;
 292                 driver->driver.size = sizeof(struct isa_device);
 293                 driver->op = op;
 294                 if (op->driver->sensitive_hw)
 295                         resource_set_int(op->driver->name, -1, "sensitive", 1);
 296                 devclass_add_driver(isa_devclass, (driver_t *)driver);
 297         }
 298 }