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 1.8 2004/04/01 07:33:18 joerg 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 struct isa_compat_driver {
  58         driver_t driver;
  59         struct old_isa_driver *op;
  60 };
  61
  62 int
  63 isa_compat_nextid(void)
  64 {
  65         static int id = 2;      /* id_id of -1, 0 and 1 are "used" */
  66
  67         return id++;
  68 }
  69
  70 static void
  71 isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
  72 {
  73         int rid;
  74         u_long start, count;
  75
  76         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
  77                              &start, &count) == 0) {
  78                 rid = 0;
  79                 res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
  80                                                 &rid, 0ul, ~0ul, 1,
  81                                                 RF_ACTIVE);
  82                 if (res->ports == NULL && bootverbose)
  83                         printf("isa_compat: didn't get ports for %s\n",
  84                                device_get_name(dev));
  85         } else
  86                 res->ports = 0;
  87
  88         if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
  89                              &start, &count) == 0
  90             && start != 0) {
  91                 rid = 0;
  92                 res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
  93                                                  &rid, 0ul, ~0ul, 1,
  94                                                  RF_ACTIVE);
  95                 if (res->memory == NULL && bootverbose)
  96                         printf("isa_compat: didn't get memory for %s\n",
  97                                device_get_name(dev));
  98         } else
  99                 res->memory = 0;
 100
 101         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 102                              &start, &count) == 0) {
 103                 rid = 0;
 104                 res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
 105                                               &rid, 0ul, ~0ul, 1,
 106                                               RF_ACTIVE);
 107                 if (res->drq == NULL && bootverbose)
 108                         printf("isa_compat: didn't get drq for %s\n",
 109                                device_get_name(dev));
 110         } else
 111                 res->drq = 0;
 112
 113         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 114                              &start, &count) == 0) {
 115                 rid = 0;
 116                 res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
 117                                               &rid, 0ul, ~0ul, 1,
 118                                               RF_SHAREABLE | RF_ACTIVE);
 119                 if (res->irq == NULL && bootverbose)
 120                         printf("isa_compat: didn't get irq for %s\n",
 121                                device_get_name(dev));
 122         } else
 123                 res->irq = 0;
 124 }
 125
 126 static void
 127 isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
 128 {
 129         if (res->ports) {
 130                 bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
 131                 res->ports = 0;
 132         }
 133         if (res->memory) {
 134                 bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
 135                 res->memory = 0;
 136         }
 137         if (res->drq) {
 138                 bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
 139                 res->drq = 0;
 140         }
 141         if (res->irq) {
 142                 bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
 143                 res->irq = 0;
 144         }
 145 }
 146
 147 #define irqmask(x)      ((x) < 0 ? 0 : (1 << (x)))
 148
 149 static int
 150 isa_compat_probe(device_t dev)
 151 {
 152         struct isa_device *dvp = device_get_softc(dev);
 153         struct isa_compat_resources res;
 154         struct old_isa_driver *op;
 155         u_long start, count;
 156
 157         /* No pnp support */
 158         if (isa_get_vendorid(dev))
 159                 return (ENXIO);
 160
 161         bzero(&res, sizeof(res));
 162         /*
 163          * Fill in the isa_device fields.
 164          */
 165         op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 166         dvp->id_id = isa_compat_nextid();
 167         dvp->id_driver = op->driver;
 168         if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
 169                              &start, &count) == 0)
 170                 dvp->id_iobase = start;
 171         else
 172                 dvp->id_iobase = -1;
 173         if (bus_get_resource(dev, SYS_RES_IRQ, 0,
 174                              &start, &count) == 0)
 175                 dvp->id_irq = irqmask(start);
 176         else
 177                 dvp->id_irq = 0;
 178         if (bus_get_resource(dev, SYS_RES_DRQ, 0,
 179                              &start, &count) == 0)
 180                 dvp->id_drq = start;
 181         else
 182                 dvp->id_drq = -1;
 183         if (bus_get_resource(dev, SYS_RES_MEMORY,
 184                              0, &start, &count) == 0) {
 185                 dvp->id_maddr = (void *)(uintptr_t)start;
 186                 dvp->id_msize = count;
 187         } else {
 188                 dvp->id_maddr = NULL;
 189                 dvp->id_msize = 0;
 190         }
 191         dvp->id_unit = device_get_unit(dev);
 192         dvp->id_flags = device_get_flags(dev);
 193         dvp->id_enabled = device_is_enabled(dev);       /* XXX unused */
 194         dvp->id_device = dev;
 195
 196         /*
 197          * Do the wrapped probe.
 198          */
 199         if (dvp->id_driver->probe) {
 200                 int portsize;
 201                 void *maddr;
 202                 struct isa_device old;
 203
 204                 isa_compat_alloc_resources(dev, &res);
 205                 if (res.memory)
 206                         maddr = rman_get_virtual(res.memory);
 207                 else
 208                         maddr = 0;
 209                 dvp->id_maddr = maddr;
 210                 old = *dvp;
 211                 portsize = dvp->id_driver->probe(dvp);
 212                 isa_compat_release_resources(dev, &res);
 213                 if (portsize != 0) {
 214                         if (portsize > 0 || dvp->id_iobase != old.id_iobase)
 215                                 bus_set_resource(dev, SYS_RES_IOPORT,
 216                                                  0, dvp->id_iobase, portsize);
 217                         if (dvp->id_irq != old.id_irq)
 218                                 bus_set_resource(dev, SYS_RES_IRQ, 0,
 219                                                  ffs(dvp->id_irq) - 1, 1);
 220                         if (dvp->id_drq != old.id_drq)
 221                                 bus_set_resource(dev, SYS_RES_DRQ, 0,
 222                                                  dvp->id_drq, 1);
 223                         if (dvp->id_maddr != old.id_maddr
 224                             || dvp->id_msize != old.id_msize) {
 225                                 maddr = dvp->id_maddr;
 226                                 if (maddr != NULL)
 227                                         bus_set_resource(dev,
 228                                                          SYS_RES_MEMORY,
 229                                                          0,
 230                                                          kvtop(maddr),
 231                                                          dvp->id_msize);
 232                                 else
 233                                         bus_delete_resource(dev,
 234                                                             SYS_RES_MEMORY,
 235                                                             0);
 236                         }
 237                         return 0;
 238                 }
 239         }
 240         return ENXIO;
 241 }
 242
 243 static int
 244 isa_compat_attach(device_t dev)
 245 {
 246         struct isa_device *dvp = device_get_softc(dev);
 247         struct isa_compat_resources res;
 248         int error;
 249
 250         bzero(&res, sizeof(res));
 251         isa_compat_alloc_resources(dev, &res);
 252         if (dvp->id_driver->attach)
 253                 dvp->id_driver->attach(dvp);
 254         if (res.irq && dvp->id_irq && dvp->id_intr) {
 255                 struct old_isa_driver *op;
 256                 void *ih;
 257
 258                 op = ((struct isa_compat_driver *)device_get_driver(dev))->op;
 259                 error = BUS_SETUP_INTR(device_get_parent(dev), dev,
 260                                        res.irq, op->type,
 261                                        dvp->id_intr,
 262                                        (void *)(uintptr_t)dvp->id_unit,
 263                                        &ih);
 264                 if (error)
 265                         printf("isa_compat_attach: failed to setup intr: %d\n",
 266                                error);
 267         }
 268         device_printf(dev, "driver is using old-style compatibility shims\n");
 269         return 0;
 270 }
 271
 272 static device_method_t isa_compat_methods[] = {
 273         /* Device interface */
 274         DEVMETHOD(device_probe,         isa_compat_probe),
 275         DEVMETHOD(device_attach,        isa_compat_attach),
 276
 277         { 0, 0 }
 278 };
 279
 280 /*
 281  * Create a new style driver around each old isa driver.
 282  */
 283 void
 284 isa_wrap_old_drivers(void)
 285 {
 286         int i;
 287         struct old_isa_driver *op;
 288         devclass_t isa_devclass = devclass_find("isa");
 289         struct isa_compat_driver *driver;
 290
 291         for (i = 0, op = &old_drivers[0]; i < old_drivers_count; i++, op++) {
 292                 driver = malloc(sizeof(struct isa_compat_driver), M_DEVBUF, M_WAITOK | M_ZERO);
 293                 driver->driver.name = op->driver->name;
 294                 driver->driver.methods = isa_compat_methods;
 295                 driver->driver.size = sizeof(struct isa_device);
 296                 driver->op = op;
 297                 if (op->driver->sensitive_hw)
 298                         resource_set_int(op->driver->name, -1, "sensitive", 1);
 299                 devclass_add_driver(isa_devclass, (driver_t *)driver);
 300         }
 301 }