6c2e3dde8c
instances to a parent bus. * Define a new method BUS_ADD_CHILD which can be called from DEVICE_IDENTIFY to add new instances. * Add a generic implementation of DEVICE_PROBE which calls DEVICE_IDENTIFY for each driver attached to the parent's devclass. * Move the hint-based isa probe from the isa driver to a new isahint driver which can be shared between i386 and alpha.
545 lines
15 KiB
C
545 lines
15 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.
|
|
*
|
|
* $Id: isa.c,v 1.125 1999/05/08 21:59:25 dfr Exp $
|
|
*/
|
|
|
|
/*
|
|
* Modifications for Intel architecture by Garrett A. Wollman.
|
|
* Copyright 1998 Massachusetts Institute of Technology
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and
|
|
* its documentation for any purpose and without fee is hereby
|
|
* granted, provided that both the above copyright notice and this
|
|
* permission notice appear in all copies, that both the above
|
|
* copyright notice and this permission notice appear in all
|
|
* supporting documentation, and that the name of M.I.T. not be used
|
|
* in advertising or publicity pertaining to distribution of the
|
|
* software without specific, written prior permission. M.I.T. makes
|
|
* no representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied
|
|
* warranty.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
|
|
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
|
|
* SHALL M.I.T. 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/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/resource.h>
|
|
|
|
#include <isa/isavar.h>
|
|
|
|
MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
|
|
|
|
/*
|
|
* The structure used to attach devices to the isa bus.
|
|
*/
|
|
struct isa_device {
|
|
int id_port[ISA_NPORT_IVARS];
|
|
u_short id_portsize[ISA_NPORT_IVARS];
|
|
vm_offset_t id_maddr[ISA_NMEM_IVARS];
|
|
vm_size_t id_msize[ISA_NMEM_IVARS];
|
|
int id_irq[ISA_NIRQ_IVARS];
|
|
int id_drq[ISA_NDRQ_IVARS];
|
|
int id_flags;
|
|
struct resource *id_portres[ISA_NPORT_IVARS];
|
|
struct resource *id_memres[ISA_NMEM_IVARS];
|
|
struct resource *id_irqres[ISA_NIRQ_IVARS];
|
|
struct resource *id_drqres[ISA_NDRQ_IVARS];
|
|
};
|
|
|
|
#define DEVTOISA(dev) ((struct isa_device *) device_get_ivars(dev))
|
|
|
|
static devclass_t isa_devclass;
|
|
|
|
/*
|
|
* At 'probe' time, we add all the devices which we know about to the
|
|
* bus. The generic attach routine will probe and attach them if they
|
|
* are alive.
|
|
*/
|
|
static int
|
|
isa_probe(device_t dev)
|
|
{
|
|
isa_wrap_old_drivers();
|
|
return bus_generic_probe(dev);
|
|
}
|
|
|
|
extern device_t isa_bus_device;
|
|
|
|
static int
|
|
isa_attach(device_t dev)
|
|
{
|
|
/*
|
|
* Arrange for bus_generic_attach(dev) to be called later.
|
|
*/
|
|
isa_bus_device = dev;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Add a new child with default ivars.
|
|
*/
|
|
static device_t
|
|
isa_add_child(device_t dev, device_t place, const char *name, int unit)
|
|
{
|
|
struct isa_device *idev;
|
|
|
|
idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT);
|
|
if (!idev)
|
|
return 0;
|
|
bzero(idev, sizeof *idev);
|
|
|
|
idev->id_port[0] = -1;
|
|
idev->id_port[1] = -1;
|
|
idev->id_portsize[0] = 0;
|
|
idev->id_portsize[1] = 0;
|
|
idev->id_maddr[0] = 0;
|
|
idev->id_maddr[1] = 0;
|
|
idev->id_msize[0] = 0;
|
|
idev->id_msize[1] = 0;
|
|
idev->id_irq[0] = -1;
|
|
idev->id_irq[1] = -1;
|
|
idev->id_drq[0] = -1;
|
|
idev->id_drq[1] = -1;
|
|
idev->id_flags = 0;
|
|
|
|
if (place)
|
|
return device_add_child_after(dev, place, name, unit, idev);
|
|
else
|
|
return device_add_child(dev, name, unit, idev);
|
|
}
|
|
|
|
static void
|
|
isa_print_child(device_t bus, device_t dev)
|
|
{
|
|
struct isa_device *id = DEVTOISA(dev);
|
|
|
|
if (id->id_port[0] > 0 || id->id_port[1] > 0
|
|
|| id->id_maddr[0] > 0 || id->id_maddr[1] > 0
|
|
|| id->id_irq[0] >= 0 || id->id_irq[1] >= 0
|
|
|| id->id_drq[0] >= 0 || id->id_drq[1] >= 0)
|
|
printf(" at");
|
|
if (id->id_port[0] > 0 && id->id_port[1] > 0) {
|
|
printf(" ports %#x", (u_int)id->id_port[0]);
|
|
if (id->id_portsize[0] > 1)
|
|
printf("-%#x", (u_int)(id->id_port[0]
|
|
+ id->id_portsize[0] - 1));
|
|
printf(" and %#x", (u_int)id->id_port[1]);
|
|
if (id->id_portsize[1] > 1)
|
|
printf("-%#x", (u_int)(id->id_port[1]
|
|
+ id->id_portsize[1] - 1));
|
|
} else if (id->id_port[0] > 0) {
|
|
printf(" port %#x", (u_int)id->id_port[0]);
|
|
if (id->id_portsize[0] > 1)
|
|
printf("-%#x", (u_int)(id->id_port[0]
|
|
+ id->id_portsize[0] - 1));
|
|
} else if (id->id_port[1] > 0) {
|
|
printf(" port %#x", (u_int)id->id_port[1]);
|
|
if (id->id_portsize[1] > 1)
|
|
printf("-%#x", (u_int)(id->id_port[1]
|
|
+ id->id_portsize[1] - 1));
|
|
}
|
|
if (id->id_maddr[0] && id->id_maddr[1]) {
|
|
printf(" iomem %#x", (u_int)id->id_maddr[0]);
|
|
if (id->id_msize[0])
|
|
printf("-%#x", (u_int)(id->id_maddr[0]
|
|
+ id->id_msize[0] - 1));
|
|
printf(" and %#x", (u_int)id->id_maddr[1]);
|
|
if (id->id_msize[1])
|
|
printf("-%#x", (u_int)(id->id_maddr[1]
|
|
+ id->id_msize[1] - 1));
|
|
} else if (id->id_maddr[0]) {
|
|
printf(" iomem %#x", (u_int)id->id_maddr[0]);
|
|
if (id->id_msize[0])
|
|
printf("-%#x", (u_int)(id->id_maddr[0]
|
|
+ id->id_msize[0] - 1));
|
|
} else if (id->id_maddr[1]) {
|
|
printf(" iomem %#x", (u_int)id->id_maddr[1]);
|
|
if (id->id_msize[1])
|
|
printf("-%#x", (u_int)(id->id_maddr[1]
|
|
+ id->id_msize[1] - 1));
|
|
}
|
|
if (id->id_irq[0] >= 0 && id->id_irq[1] >= 0)
|
|
printf(" irqs %d and %d", id->id_irq[0], id->id_irq[1]);
|
|
else if (id->id_irq[0] >= 0)
|
|
printf(" irq %d", id->id_irq[0]);
|
|
else if (id->id_irq[1] >= 0)
|
|
printf(" irq %d", id->id_irq[1]);
|
|
if (id->id_drq[0] >= 0 && id->id_drq[1] >= 0)
|
|
printf(" drqs %d and %d", id->id_drq[0], id->id_drq[1]);
|
|
else if (id->id_drq[0] >= 0)
|
|
printf(" drq %d", id->id_drq[0]);
|
|
else if (id->id_drq[1] >= 0)
|
|
printf(" drq %d", id->id_drq[1]);
|
|
|
|
if (id->id_flags)
|
|
printf(" flags %#x", id->id_flags);
|
|
|
|
printf(" on %s%d",
|
|
device_get_name(bus), device_get_unit(bus));
|
|
}
|
|
|
|
static int
|
|
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(dev);
|
|
|
|
switch (index) {
|
|
case ISA_IVAR_PORT_0:
|
|
*result = idev->id_port[0];
|
|
break;
|
|
case ISA_IVAR_PORT_1:
|
|
*result = idev->id_port[1];
|
|
break;
|
|
case ISA_IVAR_PORTSIZE_0:
|
|
*result = idev->id_portsize[0];
|
|
break;
|
|
case ISA_IVAR_PORTSIZE_1:
|
|
*result = idev->id_portsize[1];
|
|
break;
|
|
case ISA_IVAR_MADDR_0:
|
|
*result = idev->id_maddr[0];
|
|
break;
|
|
case ISA_IVAR_MADDR_1:
|
|
*result = idev->id_maddr[1];
|
|
break;
|
|
case ISA_IVAR_MSIZE_0:
|
|
*result = idev->id_msize[0];
|
|
break;
|
|
case ISA_IVAR_MSIZE_1:
|
|
*result = idev->id_msize[1];
|
|
break;
|
|
case ISA_IVAR_IRQ_0:
|
|
*result = idev->id_irq[0];
|
|
break;
|
|
case ISA_IVAR_IRQ_1:
|
|
*result = idev->id_irq[1];
|
|
break;
|
|
case ISA_IVAR_DRQ_0:
|
|
*result = idev->id_drq[0];
|
|
break;
|
|
case ISA_IVAR_DRQ_1:
|
|
*result = idev->id_drq[1];
|
|
break;
|
|
case ISA_IVAR_FLAGS:
|
|
*result = idev->id_flags;
|
|
break;
|
|
}
|
|
return ENOENT;
|
|
}
|
|
|
|
/*
|
|
* XXX -- this interface is pretty much irrelevant in the presence of
|
|
* BUS_ALLOC_RESOURCE / BUS_RELEASE_RESOURCE (at least for the ivars which
|
|
* are defined at this point).
|
|
*/
|
|
static int
|
|
isa_write_ivar(device_t bus, device_t dev,
|
|
int index, uintptr_t value)
|
|
{
|
|
struct isa_device* idev = DEVTOISA(dev);
|
|
|
|
switch (index) {
|
|
case ISA_IVAR_PORT_0:
|
|
idev->id_port[0] = value;
|
|
break;
|
|
case ISA_IVAR_PORT_1:
|
|
idev->id_port[1] = value;
|
|
break;
|
|
case ISA_IVAR_PORTSIZE_0:
|
|
idev->id_portsize[0] = value;
|
|
break;
|
|
case ISA_IVAR_PORTSIZE_1:
|
|
idev->id_portsize[1] = value;
|
|
break;
|
|
case ISA_IVAR_MADDR_0:
|
|
idev->id_maddr[0] = value;
|
|
break;
|
|
case ISA_IVAR_MADDR_1:
|
|
idev->id_maddr[1] = value;
|
|
break;
|
|
case ISA_IVAR_MSIZE_0:
|
|
idev->id_msize[0] = value;
|
|
break;
|
|
case ISA_IVAR_MSIZE_1:
|
|
idev->id_msize[1] = value;
|
|
break;
|
|
case ISA_IVAR_IRQ_0:
|
|
idev->id_irq[0] = value;
|
|
break;
|
|
case ISA_IVAR_IRQ_1:
|
|
idev->id_irq[1] = value;
|
|
break;
|
|
case ISA_IVAR_DRQ_0:
|
|
idev->id_drq[0] = value;
|
|
break;
|
|
case ISA_IVAR_DRQ_1:
|
|
idev->id_drq[1] = value;
|
|
break;
|
|
case ISA_IVAR_FLAGS:
|
|
idev->id_flags = value;
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* This implementation simply passes the request up to the parent
|
|
* bus, which in our case is the special i386 nexus, substituting any
|
|
* configured values if the caller defaulted. We can get away with
|
|
* this because there is no special mapping for ISA resources on an Intel
|
|
* platform. When porting this code to another architecture, it may be
|
|
* necessary to interpose a mapping layer here.
|
|
*/
|
|
static struct resource *
|
|
isa_alloc_resource(device_t bus, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
int isdefault;
|
|
struct resource *rv, **rvp = 0;
|
|
struct isa_device *id = DEVTOISA(child);
|
|
|
|
if (child) {
|
|
/*
|
|
* If this is our child, then use the isa_device to find
|
|
* defaults and to record results.
|
|
*/
|
|
if (device_get_devclass(device_get_parent(child)) == isa_devclass)
|
|
id = DEVTOISA(child);
|
|
else
|
|
id = NULL;
|
|
} else
|
|
id = NULL;
|
|
isdefault = (id != NULL && start == 0UL && end == ~0UL && *rid == 0);
|
|
if (*rid > 1)
|
|
return 0;
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
if (isdefault && id->id_irq[0] >= 0) {
|
|
start = id->id_irq[0];
|
|
end = id->id_irq[0];
|
|
count = 1;
|
|
}
|
|
if (id)
|
|
rvp = &id->id_irqres[*rid];
|
|
break;
|
|
|
|
case SYS_RES_DRQ:
|
|
if (isdefault && id->id_drq[0] >= 0) {
|
|
start = id->id_drq[0];
|
|
end = id->id_drq[0];
|
|
count = 1;
|
|
}
|
|
if (id)
|
|
rvp = &id->id_drqres[*rid];
|
|
break;
|
|
|
|
case SYS_RES_MEMORY:
|
|
if (isdefault && id->id_maddr[0]) {
|
|
start = id->id_maddr[0];
|
|
count = max(count, (u_long)id->id_msize[0]);
|
|
end = id->id_maddr[0] + count;
|
|
}
|
|
if (id)
|
|
rvp = &id->id_memres[*rid];
|
|
break;
|
|
|
|
case SYS_RES_IOPORT:
|
|
if (isdefault && id->id_port[0]) {
|
|
start = id->id_port[0];
|
|
count = max(count, (u_long)id->id_portsize[0]);
|
|
end = id->id_port[0] + count;
|
|
}
|
|
if (id)
|
|
rvp = &id->id_portres[*rid];
|
|
break;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If the client attempts to reallocate a resource without
|
|
* releasing what was there previously, die horribly so that
|
|
* he knows how he !@#$ed up.
|
|
*/
|
|
if (rvp && *rvp != 0)
|
|
panic("%s%d: (%d, %d) not free for %s%d\n",
|
|
device_get_name(bus), device_get_unit(bus),
|
|
type, *rid,
|
|
device_get_name(child), device_get_unit(child));
|
|
|
|
/*
|
|
* nexus_alloc_resource had better not change *rid...
|
|
*/
|
|
rv = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
|
|
start, end, count, flags);
|
|
if (rvp && (*rvp = rv) != 0) {
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
id->id_maddr[*rid] = rv->r_start;
|
|
id->id_msize[*rid] = count;
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
id->id_port[*rid] = rv->r_start;
|
|
id->id_portsize[*rid] = count;
|
|
break;
|
|
case SYS_RES_IRQ:
|
|
id->id_irq[*rid] = rv->r_start;
|
|
break;
|
|
case SYS_RES_DRQ:
|
|
id->id_drq[*rid] = rv->r_start;
|
|
break;
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static int
|
|
isa_release_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *r)
|
|
{
|
|
int rv;
|
|
struct isa_device *id = DEVTOISA(child);
|
|
|
|
if (rid > 1)
|
|
return EINVAL;
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
case SYS_RES_DRQ:
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
rv = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
|
|
|
|
if (rv == 0) {
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
id->id_irqres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_DRQ:
|
|
id->id_drqres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_MEMORY:
|
|
id->id_memres[rid] = 0;
|
|
break;
|
|
|
|
case SYS_RES_IOPORT:
|
|
id->id_portres[rid] = 0;
|
|
break;
|
|
|
|
default:
|
|
return ENOENT;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* We can't use the bus_generic_* versions of these methods because those
|
|
* methods always pass the bus param as the requesting device, and we need
|
|
* to pass the child (the i386 nexus knows about this and is prepared to
|
|
* deal).
|
|
*/
|
|
static int
|
|
isa_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
|
|
void (*ihand)(void *), void *arg, void **cookiep)
|
|
{
|
|
return (BUS_SETUP_INTR(device_get_parent(bus), child, r, flags,
|
|
ihand, arg, cookiep));
|
|
}
|
|
|
|
static int
|
|
isa_teardown_intr(device_t bus, device_t child, struct resource *r,
|
|
void *cookie)
|
|
{
|
|
return (BUS_TEARDOWN_INTR(device_get_parent(bus), child, r, cookie));
|
|
}
|
|
|
|
static device_method_t isa_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, isa_probe),
|
|
DEVMETHOD(device_attach, isa_attach),
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_add_child, isa_add_child),
|
|
DEVMETHOD(bus_print_child, isa_print_child),
|
|
DEVMETHOD(bus_read_ivar, isa_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, isa_write_ivar),
|
|
DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, isa_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, isa_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t isa_driver = {
|
|
"isa",
|
|
isa_methods,
|
|
1, /* no softc */
|
|
};
|
|
|
|
/*
|
|
* ISA can be attached to a PCI-ISA bridge or directly to the nexus.
|
|
*/
|
|
DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
|
|
DRIVER_MODULE(isa, nexus, isa_driver, isa_devclass, 0, 0);
|