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/*-
* Copyright (c) 1999 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <isa/isavar.h>
#include <isa/isa_common.h>
#include <machine/resource.h>
void
isa_hinted_child(device_t parent, const char *name, int unit)
{
device_t child;
int sensitive, start, count;
int order;
/* device-specific flag overrides any wildcard */
sensitive = 0;
if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
resource_int_value(name, -1, "sensitive", &sensitive);
if (sensitive)
order = ISA_ORDER_SENSITIVE;
else
order = ISA_ORDER_SPECULATIVE;
child = BUS_ADD_CHILD(parent, order, name, unit);
if (child == 0)
return;
start = 0;
count = 0;
resource_int_value(name, unit, "port", &start);
resource_int_value(name, unit, "portsize", &count);
if (start > 0 || count > 0)
bus_set_resource(child, SYS_RES_IOPORT, 0, start, count);
start = 0;
count = 0;
resource_int_value(name, unit, "maddr", &start);
resource_int_value(name, unit, "msize", &count);
if (start > 0 || count > 0)
bus_set_resource(child, SYS_RES_MEMORY, 0, start, count);
if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0)
bus_set_resource(child, SYS_RES_IRQ, 0, start, 1);
if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
bus_set_resource(child, SYS_RES_DRQ, 0, start, 1);
if (resource_disabled(name, unit))
device_disable(child);
isa_set_configattr(child, (isa_get_configattr(child)|ISACFGATTR_HINTS));
}
static int
isa_match_resource_hint(device_t dev, int type, long value)
{
struct isa_device* idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
STAILQ_FOREACH(rle, rl, link) {
if (rle->type != type)
continue;
if (rle->start <= value && rle->end >= value)
return (1);
}
return (0);
}
void
isa_hint_device_unit(device_t bus, device_t child, const char *name, int *unitp)
{
const char *s;
long value;
int line, matches, unit;
line = 0;
for (;;) {
if (resource_find_dev(&line, name, &unit, "at", NULL) != 0)
break;
/* Must have an "at" for isa. */
resource_string_value(name, unit, "at", &s);
if (!(strcmp(s, device_get_nameunit(bus)) == 0 ||
strcmp(s, device_get_name(bus)) == 0))
continue;
/*
* Check for matching resources. We must have at
* least one match. Since I/O and memory resources
* cannot be shared, if we get a match on either of
* those, ignore any mismatches in IRQs or DRQs.
*
* XXX: We may want to revisit this to be more lenient
* and wire as long as it gets one match.
*/
matches = 0;
if (resource_long_value(name, unit, "port", &value) == 0) {
/*
* Floppy drive controllers are notorious for
* having a wide variety of resources not all
* of which include the first port that is
* specified by the hint (typically 0x3f0)
* (see the comment above
* fdc_isa_alloc_resources() in fdc_isa.c).
* However, they do all seem to include port +
* 2 (e.g. 0x3f2) so for a floppy device, look
* for 'value + 2' in the port resources
* instead of the hint value.
*/
if (strcmp(name, "fdc") == 0)
value += 2;
if (isa_match_resource_hint(child, SYS_RES_IOPORT,
value))
matches++;
else
continue;
}
if (resource_long_value(name, unit, "maddr", &value) == 0) {
if (isa_match_resource_hint(child, SYS_RES_MEMORY,
value))
matches++;
else
continue;
}
if (matches > 0)
goto matched;
if (resource_long_value(name, unit, "irq", &value) == 0) {
if (isa_match_resource_hint(child, SYS_RES_IRQ, value))
matches++;
else
continue;
}
if (resource_long_value(name, unit, "drq", &value) == 0) {
if (isa_match_resource_hint(child, SYS_RES_DRQ, value))
matches++;
else
continue;
}
matched:
if (matches > 0) {
/* We have a winner! */
*unitp = unit;
break;
}
}
}
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