freebsd-dev/sys/i386/isa/isa_compat.c
Peter Wemm 2398f0cd1d Hints overhaul:
- Replace some very poorly thought out API hacks that should have been
  fixed a long while ago.
- Provide some much more flexible search functions (resource_find_*())
- Use strings for storage instead of an outgrowth of the rather
  inconvenient temporary ioconf table from config().  We already had a
  fallback to using strings before malloc/vm was running anyway.
2001-06-12 09:40:04 +00:00

297 lines
7.7 KiB
C

/*-
* Copyright (c) 1998 Doug Rabson
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/vmparam.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pmap.h>
#include <machine/md_var.h>
#include <machine/resource.h>
#include <isa/isavar.h>
#include <i386/isa/isa_device.h>
struct isa_compat_resources {
struct resource *ports;
struct resource *memory;
struct resource *drq;
struct resource *irq;
};
static void
isa_compat_alloc_resources(device_t dev, struct isa_compat_resources *res)
{
int rid;
u_long start, count;
if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
&start, &count) == 0) {
rid = 0;
res->ports = bus_alloc_resource(dev, SYS_RES_IOPORT,
&rid, 0ul, ~0ul, 1,
RF_ACTIVE);
if (res->ports == NULL && bootverbose)
printf("isa_compat: didn't get ports for %s\n",
device_get_name(dev));
} else
res->ports = 0;
if (bus_get_resource(dev, SYS_RES_MEMORY, 0,
&start, &count) == 0
&& start != 0) {
rid = 0;
res->memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
&rid, 0ul, ~0ul, 1,
RF_ACTIVE);
if (res->memory == NULL && bootverbose)
printf("isa_compat: didn't get memory for %s\n",
device_get_name(dev));
} else
res->memory = 0;
if (bus_get_resource(dev, SYS_RES_DRQ, 0,
&start, &count) == 0) {
rid = 0;
res->drq = bus_alloc_resource(dev, SYS_RES_DRQ,
&rid, 0ul, ~0ul, 1,
RF_ACTIVE);
if (res->drq == NULL && bootverbose)
printf("isa_compat: didn't get drq for %s\n",
device_get_name(dev));
} else
res->drq = 0;
if (bus_get_resource(dev, SYS_RES_IRQ, 0,
&start, &count) == 0) {
rid = 0;
res->irq = bus_alloc_resource(dev, SYS_RES_IRQ,
&rid, 0ul, ~0ul, 1,
RF_SHAREABLE | RF_ACTIVE);
if (res->irq == NULL && bootverbose)
printf("isa_compat: didn't get irq for %s\n",
device_get_name(dev));
} else
res->irq = 0;
}
static void
isa_compat_release_resources(device_t dev, struct isa_compat_resources *res)
{
if (res->ports) {
bus_release_resource(dev, SYS_RES_IOPORT, 0, res->ports);
res->ports = 0;
}
if (res->memory) {
bus_release_resource(dev, SYS_RES_MEMORY, 0, res->memory);
res->memory = 0;
}
if (res->drq) {
bus_release_resource(dev, SYS_RES_DRQ, 0, res->drq);
res->drq = 0;
}
if (res->irq) {
bus_release_resource(dev, SYS_RES_IRQ, 0, res->irq);
res->irq = 0;
}
}
#define irqmask(x) ((x) < 0 ? 0 : (1 << (x)))
static int
isa_compat_probe(device_t dev)
{
struct isa_device *dvp = device_get_softc(dev);
struct isa_compat_resources res;
u_long start, count;
/* No pnp support */
if (isa_get_vendorid(dev))
return (ENXIO);
bzero(&res, sizeof(res));
/*
* Fill in the isa_device fields.
*/
dvp->id_driver = device_get_driver(dev)->priv;
if (bus_get_resource(dev, SYS_RES_IOPORT, 0,
&start, &count) == 0)
dvp->id_iobase = start;
else
dvp->id_iobase = -1;
if (bus_get_resource(dev, SYS_RES_IRQ, 0,
&start, &count) == 0)
dvp->id_irq = irqmask(start);
else
dvp->id_irq = 0;
if (bus_get_resource(dev, SYS_RES_DRQ, 0,
&start, &count) == 0)
dvp->id_drq = start;
else
dvp->id_drq = -1;
if (bus_get_resource(dev, SYS_RES_MEMORY,
0, &start, &count) == 0) {
dvp->id_maddr = (void *)(uintptr_t)start;
dvp->id_msize = count;
} else {
dvp->id_maddr = NULL;
dvp->id_msize = 0;
}
dvp->id_unit = device_get_unit(dev);
dvp->id_flags = device_get_flags(dev);
dvp->id_enabled = device_is_enabled(dev); /* XXX unused */
dvp->id_device = dev;
/*
* Do the wrapped probe.
*/
if (dvp->id_driver->probe) {
int portsize;
void *maddr;
struct isa_device old;
isa_compat_alloc_resources(dev, &res);
if (res.memory)
maddr = rman_get_virtual(res.memory);
else
maddr = 0;
dvp->id_maddr = maddr;
old = *dvp;
portsize = dvp->id_driver->probe(dvp);
isa_compat_release_resources(dev, &res);
if (portsize != 0) {
if (portsize > 0 || dvp->id_iobase != old.id_iobase)
bus_set_resource(dev, SYS_RES_IOPORT,
0, dvp->id_iobase, portsize);
if (dvp->id_irq != old.id_irq)
bus_set_resource(dev, SYS_RES_IRQ, 0,
ffs(dvp->id_irq) - 1, 1);
if (dvp->id_drq != old.id_drq)
bus_set_resource(dev, SYS_RES_DRQ, 0,
dvp->id_drq, 1);
if (dvp->id_maddr != old.id_maddr
|| dvp->id_msize != old.id_msize) {
maddr = dvp->id_maddr;
if (maddr != NULL)
bus_set_resource(dev,
SYS_RES_MEMORY,
0,
kvtop(maddr),
dvp->id_msize);
else
bus_delete_resource(dev,
SYS_RES_MEMORY,
0);
}
return 0;
}
}
return ENXIO;
}
static int
isa_compat_attach(device_t dev)
{
struct isa_device *dvp = device_get_softc(dev);
struct isa_compat_resources res;
int error;
bzero(&res, sizeof(res));
isa_compat_alloc_resources(dev, &res);
if (dvp->id_driver->attach)
dvp->id_driver->attach(dvp);
if (res.irq && dvp->id_irq && dvp->id_intr) {
void *ih;
error = BUS_SETUP_INTR(device_get_parent(dev), dev,
res.irq, dvp->id_driver->intrflags,
dvp->id_intr,
(void *)(uintptr_t)dvp->id_unit,
&ih);
if (error)
printf("isa_compat_attach: failed to setup intr: %d\n",
error);
}
device_printf(dev, "driver is using old-style compatibility shims\n");
return 0;
}
static device_method_t isa_compat_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, isa_compat_probe),
DEVMETHOD(device_attach, isa_compat_attach),
{ 0, 0 }
};
/*
* Create a new style driver around each old isa driver.
*/
int
compat_isa_handler(module_t mod, int type, void *data)
{
struct isa_driver *id = (struct isa_driver *)data;
driver_t *driver;
devclass_t isa_devclass = devclass_find("isa");
switch (type) {
case MOD_LOAD:
driver = malloc(sizeof(driver_t), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!driver)
return ENOMEM;
driver->name = id->name;
driver->methods = isa_compat_methods;
driver->size = sizeof(struct isa_device);
driver->priv = id;
if (id->sensitive_hw) {
#if 0
resource_set_int(id->name, -1, "sensitive", 1);
#else
printf("WARNING: isa driver %s is sensitive, but cannot set it!\n",
driver->name);
#endif
}
devclass_add_driver(isa_devclass, driver);
break;
case MOD_UNLOAD:
printf("%s: module unload not supported!\n", id->name);
return EOPNOTSUPP;
default:
break;
}
return 0;
}