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d2e5427a0d
freebsd/sys/isa/isa_common.c
Marius Strobl acb8c14985 Make the ISAPNP code optional and only enable it on i386 and pc98 (used 
for CBUS-PNP cards there) by default, as there are no amd64 and sparc64
machines with ISA slots and which therefore could make use of this code
known to exist. For sparc64 this additionally allows to get rid of the
compat shims for in{b,w,l}()/out{b,w,l}() etc and the associated hacks.

OK'ed by:	imp, peter
2006-06-12 21:07:13 +00:00

1159 lines
27 KiB
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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.
*/
/*
* 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.
*/
/*
* Parts of the ISA bus implementation common to all architectures.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_isa.h"
#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>
#include <isa/isa_common.h>
static int isa_print_child(device_t bus, device_t dev);
static MALLOC_DEFINE(M_ISADEV, "isadev", "ISA device");
static int isa_running;
/*
* 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)
{
device_set_desc(dev, "ISA bus");
isa_init(dev); /* Allow machdep code to initialise */
return (0);
}
extern device_t isa_bus_device;
static int
isa_attach(device_t dev)
{
/*
* Arrange for isa_probe_children(dev) to be called later. XXX
*/
isa_bus_device = dev;
return (0);
}
/*
* Find a working set of memory regions for a child using the ranges
* in *config and return the regions in *result. Returns non-zero if
* a set of ranges was found.
*/
static int
isa_find_memory(device_t child, struct isa_config *config,
struct isa_config *result)
{
int success, i;
struct resource *res[ISA_NMEM];
/*
* First clear out any existing resource definitions.
*/
for (i = 0; i < ISA_NMEM; i++) {
bus_delete_resource(child, SYS_RES_MEMORY, i);
res[i] = NULL;
}
success = 1;
result->ic_nmem = config->ic_nmem;
for (i = 0; i < config->ic_nmem; i++) {
uint32_t start, end, size, align;
size = config->ic_mem[i].ir_size;
/* the PnP device may have a null resource as filler */
if (size == 0) {
result->ic_mem[i].ir_start = 0;
result->ic_mem[i].ir_end = 0;
result->ic_mem[i].ir_size = 0;
result->ic_mem[i].ir_align = 0;
continue;
}
for (start = config->ic_mem[i].ir_start,
end = config->ic_mem[i].ir_end,
align = config->ic_mem[i].ir_align;
start + size - 1 <= end && start + size > start;
start += align) {
bus_set_resource(child, SYS_RES_MEMORY, i,
start, size);
res[i] = bus_alloc_resource(child,
SYS_RES_MEMORY, &i, 0, ~0, 1,
rman_make_alignment_flags(align) /* !RF_ACTIVE */);
if (res[i]) {
result->ic_mem[i].ir_start = start;
result->ic_mem[i].ir_end = start + size - 1;
result->ic_mem[i].ir_size = size;
result->ic_mem[i].ir_align = align;
break;
}
}
/*
* If we didn't find a place for memory range i, then
* give up now.
*/
if (!res[i]) {
success = 0;
break;
}
}
for (i = 0; i < ISA_NMEM; i++) {
if (res[i])
bus_release_resource(child, SYS_RES_MEMORY,
i, res[i]);
}
return (success);
}
/*
* Find a working set of port regions for a child using the ranges
* in *config and return the regions in *result. Returns non-zero if
* a set of ranges was found.
*/
static int
isa_find_port(device_t child, struct isa_config *config,
struct isa_config *result)
{
int success, i;
struct resource *res[ISA_NPORT];
/*
* First clear out any existing resource definitions.
*/
for (i = 0; i < ISA_NPORT; i++) {
bus_delete_resource(child, SYS_RES_IOPORT, i);
res[i] = NULL;
}
success = 1;
result->ic_nport = config->ic_nport;
for (i = 0; i < config->ic_nport; i++) {
uint32_t start, end, size, align;
size = config->ic_port[i].ir_size;
/* the PnP device may have a null resource as filler */
if (size == 0) {
result->ic_port[i].ir_start = 0;
result->ic_port[i].ir_end = 0;
result->ic_port[i].ir_size = 0;
result->ic_port[i].ir_align = 0;
continue;
}
for (start = config->ic_port[i].ir_start,
end = config->ic_port[i].ir_end,
align = config->ic_port[i].ir_align;
start + size - 1 <= end;
start += align) {
bus_set_resource(child, SYS_RES_IOPORT, i,
start, size);
res[i] = bus_alloc_resource(child,
SYS_RES_IOPORT, &i, 0, ~0, 1,
rman_make_alignment_flags(align) /* !RF_ACTIVE */);
if (res[i]) {
result->ic_port[i].ir_start = start;
result->ic_port[i].ir_end = start + size - 1;
result->ic_port[i].ir_size = size;
result->ic_port[i].ir_align = align;
break;
}
}
/*
* If we didn't find a place for port range i, then
* give up now.
*/
if (!res[i]) {
success = 0;
break;
}
}
for (i = 0; i < ISA_NPORT; i++) {
if (res[i])
bus_release_resource(child, SYS_RES_IOPORT,
i, res[i]);
}
return success;
}
/*
* Return the index of the first bit in the mask (or -1 if mask is empty.
*/
static int
find_first_bit(uint32_t mask)
{
return (ffs(mask) - 1);
}
/*
* Return the index of the next bit in the mask, or -1 if there are no more.
*/
static int
find_next_bit(uint32_t mask, int bit)
{
bit++;
while (bit < 32 && !(mask & (1 << bit)))
bit++;
if (bit != 32)
return (bit);
return (-1);
}
/*
* Find a working set of irqs for a child using the masks in *config
* and return the regions in *result. Returns non-zero if a set of
* irqs was found.
*/
static int
isa_find_irq(device_t child, struct isa_config *config,
struct isa_config *result)
{
int success, i;
struct resource *res[ISA_NIRQ];
/*
* First clear out any existing resource definitions.
*/
for (i = 0; i < ISA_NIRQ; i++) {
bus_delete_resource(child, SYS_RES_IRQ, i);
res[i] = NULL;
}
success = 1;
result->ic_nirq = config->ic_nirq;
for (i = 0; i < config->ic_nirq; i++) {
uint32_t mask = config->ic_irqmask[i];
int irq;
/* the PnP device may have a null resource as filler */
if (mask == 0) {
result->ic_irqmask[i] = 0;
continue;
}
for (irq = find_first_bit(mask);
irq != -1;
irq = find_next_bit(mask, irq)) {
bus_set_resource(child, SYS_RES_IRQ, i,
irq, 1);
res[i] = bus_alloc_resource_any(child,
SYS_RES_IRQ, &i,
0 /* !RF_ACTIVE */ );
if (res[i]) {
result->ic_irqmask[i] = (1 << irq);
break;
}
}
/*
* If we didn't find a place for irq range i, then
* give up now.
*/
if (!res[i]) {
success = 0;
break;
}
}
for (i = 0; i < ISA_NIRQ; i++) {
if (res[i])
bus_release_resource(child, SYS_RES_IRQ,
i, res[i]);
}
return (success);
}
/*
* Find a working set of drqs for a child using the masks in *config
* and return the regions in *result. Returns non-zero if a set of
* drqs was found.
*/
static int
isa_find_drq(device_t child, struct isa_config *config,
struct isa_config *result)
{
int success, i;
struct resource *res[ISA_NDRQ];
/*
* First clear out any existing resource definitions.
*/
for (i = 0; i < ISA_NDRQ; i++) {
bus_delete_resource(child, SYS_RES_DRQ, i);
res[i] = NULL;
}
success = 1;
result->ic_ndrq = config->ic_ndrq;
for (i = 0; i < config->ic_ndrq; i++) {
uint32_t mask = config->ic_drqmask[i];
int drq;
/* the PnP device may have a null resource as filler */
if (mask == 0) {
result->ic_drqmask[i] = 0;
continue;
}
for (drq = find_first_bit(mask);
drq != -1;
drq = find_next_bit(mask, drq)) {
bus_set_resource(child, SYS_RES_DRQ, i,
drq, 1);
res[i] = bus_alloc_resource_any(child,
SYS_RES_DRQ, &i,
0 /* !RF_ACTIVE */);
if (res[i]) {
result->ic_drqmask[i] = (1 << drq);
break;
}
}
/*
* If we didn't find a place for drq range i, then
* give up now.
*/
if (!res[i]) {
success = 0;
break;
}
}
for (i = 0; i < ISA_NDRQ; i++) {
if (res[i])
bus_release_resource(child, SYS_RES_DRQ,
i, res[i]);
}
return (success);
}
/*
* Attempt to find a working set of resources for a device. Return
* non-zero if a working configuration is found.
*/
static int
isa_assign_resources(device_t child)
{
struct isa_device *idev = DEVTOISA(child);
struct isa_config_entry *ice;
struct isa_config *cfg;
const char *reason;
reason = "Empty ISA id_configs";
cfg = malloc(sizeof(struct isa_config), M_TEMP, M_NOWAIT|M_ZERO);
if (cfg == NULL)
return(0);
TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
reason = "memory";
if (!isa_find_memory(child, &ice->ice_config, cfg))
continue;
reason = "port";
if (!isa_find_port(child, &ice->ice_config, cfg))
continue;
reason = "irq";
if (!isa_find_irq(child, &ice->ice_config, cfg))
continue;
reason = "drq";
if (!isa_find_drq(child, &ice->ice_config, cfg))
continue;
/*
* A working configuration was found enable the device
* with this configuration.
*/
reason = "no callback";
if (idev->id_config_cb) {
idev->id_config_cb(idev->id_config_arg,
cfg, 1);
free(cfg, M_TEMP);
return (1);
}
}
/*
* Disable the device.
*/
bus_print_child_header(device_get_parent(child), child);
printf(" can't assign resources (%s)\n", reason);
if (bootverbose)
isa_print_child(device_get_parent(child), child);
bzero(cfg, sizeof (*cfg));
if (idev->id_config_cb)
idev->id_config_cb(idev->id_config_arg, cfg, 0);
device_disable(child);
free(cfg, M_TEMP);
return (0);
}
/*
* Return non-zero if the device has a single configuration, that is,
* a fixed set of resoruces.
*/
static int
isa_has_single_config(device_t dev)
{
struct isa_device *idev = DEVTOISA(dev);
struct isa_config_entry *ice;
uint32_t mask;
int i;
ice = TAILQ_FIRST(&idev->id_configs);
if (TAILQ_NEXT(ice, ice_link))
return (0);
for (i = 0; i < ice->ice_config.ic_nmem; ++i) {
if (ice->ice_config.ic_mem[i].ir_size == 0)
continue;
if (ice->ice_config.ic_mem[i].ir_end !=
ice->ice_config.ic_mem[i].ir_start +
ice->ice_config.ic_mem[i].ir_size - 1)
return (0);
}
for (i = 0; i < ice->ice_config.ic_nport; ++i) {
if (ice->ice_config.ic_port[i].ir_size == 0)
continue;
if (ice->ice_config.ic_port[i].ir_end !=
ice->ice_config.ic_port[i].ir_start +
ice->ice_config.ic_port[i].ir_size - 1)
return (0);
}
for (i = 0; i < ice->ice_config.ic_nirq; ++i) {
mask = ice->ice_config.ic_irqmask[i];
if (mask == 0)
continue;
if (find_next_bit(mask, find_first_bit(mask)) != -1)
return (0);
}
for (i = 0; i < ice->ice_config.ic_ndrq; ++i) {
mask = ice->ice_config.ic_drqmask[i];
if (mask == 0)
continue;
if (find_next_bit(mask, find_first_bit(mask)) != -1)
return (0);
}
return (1);
}
/*
* Called after other devices have initialised to probe for isa devices.
*/
void
isa_probe_children(device_t dev)
{
device_t *children;
struct isa_config *cfg;
int nchildren, i;
/*
* Create all the children by calling driver's identify methods.
*/
bus_generic_probe(dev);
if (device_get_children(dev, &children, &nchildren))
return;
/*
* First disable all pnp devices so that they don't get
* matched by legacy probes.
*/
if (bootverbose)
printf("isa_probe_children: disabling PnP devices\n");
cfg = malloc(sizeof(*cfg), M_TEMP, M_NOWAIT|M_ZERO);
if (cfg == NULL) {
free(children, M_TEMP);
return;
}
for (i = 0; i < nchildren; i++) {
device_t child = children[i];
struct isa_device *idev = DEVTOISA(child);
bzero(cfg, sizeof(*cfg));
if (idev->id_config_cb)
idev->id_config_cb(idev->id_config_arg, cfg, 0);
}
free(cfg, M_TEMP);
/*
* Next probe all non-pnp devices so that they claim their
* resources first.
*/
if (bootverbose)
printf("isa_probe_children: probing non-PnP devices\n");
for (i = 0; i < nchildren; i++) {
device_t child = children[i];
struct isa_device *idev = DEVTOISA(child);
if (TAILQ_FIRST(&idev->id_configs))
continue;
device_probe_and_attach(child);
}
/*
* Finally assign resource to pnp devices and probe them.
*/
if (bootverbose)
printf("isa_probe_children: probing PnP devices\n");
for (i = 0; i < nchildren; i++) {
device_t child = children[i];
struct isa_device* idev = DEVTOISA(child);
if (!TAILQ_FIRST(&idev->id_configs))
continue;
if (isa_assign_resources(child)) {
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
device_probe_and_attach(child);
/*
* Claim any unallocated resources to keep other
* devices from using them.
*/
STAILQ_FOREACH(rle, rl, link) {
if (!rle->res) {
int rid = rle->rid;
resource_list_alloc(rl, dev, child,
rle->type,
&rid,
0, ~0, 1, 0);
}
}
}
}
free(children, M_TEMP);
isa_running = 1;
}
/*
* Add a new child with default ivars.
*/
static device_t
isa_add_child(device_t dev, int order, const char *name, int unit)
{
device_t child;
struct isa_device *idev;
child = device_add_child_ordered(dev, order, name, unit);
if (child == NULL)
return (child);
idev = malloc(sizeof(struct isa_device), M_ISADEV, M_NOWAIT | M_ZERO);
if (!idev)
return (0);
resource_list_init(&idev->id_resources);
TAILQ_INIT(&idev->id_configs);
device_set_ivars(child, idev);
return (child);
}
static int
isa_print_all_resources(device_t dev)
{
struct isa_device *idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
int retval = 0;
if (STAILQ_FIRST(rl) || device_get_flags(dev))
retval += printf(" at");
retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
if (device_get_flags(dev))
retval += printf(" flags %#x", device_get_flags(dev));
#ifdef ISAPNP
if (idev->id_vendorid)
retval += printf(" pnpid %s", pnp_eisaformat(idev->id_vendorid));
#endif
return (retval);
}
static int
isa_print_child(device_t bus, device_t dev)
{
int retval = 0;
retval += bus_print_child_header(bus, dev);
retval += isa_print_all_resources(dev);
retval += bus_print_child_footer(bus, dev);
return (retval);
}
static void
isa_probe_nomatch(device_t dev, device_t child)
{
if (bootverbose) {
bus_print_child_header(dev, child);
printf(" failed to probe");
isa_print_all_resources(child);
bus_print_child_footer(dev, child);
}
return;
}
static int
isa_read_ivar(device_t bus, device_t dev, int index, uintptr_t * result)
{
struct isa_device* idev = DEVTOISA(dev);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
switch (index) {
case ISA_IVAR_PORT_0:
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_PORT_1:
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_PORTSIZE_0:
rle = resource_list_find(rl, SYS_RES_IOPORT, 0);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_PORTSIZE_1:
rle = resource_list_find(rl, SYS_RES_IOPORT, 1);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_MADDR_0:
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_MADDR_1:
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_MEMSIZE_0:
rle = resource_list_find(rl, SYS_RES_MEMORY, 0);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_MEMSIZE_1:
rle = resource_list_find(rl, SYS_RES_MEMORY, 1);
if (rle)
*result = rle->count;
else
*result = 0;
break;
case ISA_IVAR_IRQ_0:
rle = resource_list_find(rl, SYS_RES_IRQ, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_IRQ_1:
rle = resource_list_find(rl, SYS_RES_IRQ, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_DRQ_0:
rle = resource_list_find(rl, SYS_RES_DRQ, 0);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_DRQ_1:
rle = resource_list_find(rl, SYS_RES_DRQ, 1);
if (rle)
*result = rle->start;
else
*result = -1;
break;
case ISA_IVAR_VENDORID:
*result = idev->id_vendorid;
break;
case ISA_IVAR_SERIAL:
*result = idev->id_serial;
break;
case ISA_IVAR_LOGICALID:
*result = idev->id_logicalid;
break;
case ISA_IVAR_COMPATID:
*result = idev->id_compatid;
break;
case ISA_IVAR_CONFIGATTR:
*result = idev->id_config_attr;
break;
default:
return (ENOENT);
}
return (0);
}
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:
case ISA_IVAR_PORT_1:
case ISA_IVAR_PORTSIZE_0:
case ISA_IVAR_PORTSIZE_1:
case ISA_IVAR_MADDR_0:
case ISA_IVAR_MADDR_1:
case ISA_IVAR_MEMSIZE_0:
case ISA_IVAR_MEMSIZE_1:
case ISA_IVAR_IRQ_0:
case ISA_IVAR_IRQ_1:
case ISA_IVAR_DRQ_0:
case ISA_IVAR_DRQ_1:
return (EINVAL);
case ISA_IVAR_VENDORID:
idev->id_vendorid = value;
break;
case ISA_IVAR_SERIAL:
idev->id_serial = value;
break;
case ISA_IVAR_LOGICALID:
idev->id_logicalid = value;
break;
case ISA_IVAR_COMPATID:
idev->id_compatid = value;
break;
case ISA_IVAR_CONFIGATTR:
idev->id_config_attr = value;
break;
default:
return (ENOENT);
}
return (0);
}
/*
* Free any resources which the driver missed or which we were holding for
* it (see isa_probe_children).
*/
static void
isa_child_detached(device_t dev, device_t child)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
if (TAILQ_FIRST(&idev->id_configs)) {
/*
* Claim any unallocated resources to keep other
* devices from using them.
*/
STAILQ_FOREACH(rle, rl, link) {
if (!rle->res) {
int rid = rle->rid;
resource_list_alloc(rl, dev, child,
rle->type,
&rid, 0, ~0, 1, 0);
}
}
}
}
static void
isa_driver_added(device_t dev, driver_t *driver)
{
device_t *children;
int nchildren, i;
/*
* Don't do anything if drivers are dynamically
* added during autoconfiguration (cf. ymf724).
* since that would end up calling identify
* twice.
*/
if (!isa_running)
return;
DEVICE_IDENTIFY(driver, dev);
if (device_get_children(dev, &children, &nchildren))
return;
for (i = 0; i < nchildren; i++) {
device_t child = children[i];
struct isa_device *idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
struct resource_list_entry *rle;
if (device_get_state(child) != DS_NOTPRESENT)
continue;
if (!device_is_enabled(child))
continue;
/*
* Free resources which we were holding on behalf of
* the device.
*/
STAILQ_FOREACH(rle, &idev->id_resources, link) {
if (rle->res)
resource_list_release(rl, dev, child,
rle->type,
rle->rid,
rle->res);
}
if (TAILQ_FIRST(&idev->id_configs))
if (!isa_assign_resources(child))
continue;
device_probe_and_attach(child);
if (TAILQ_FIRST(&idev->id_configs)) {
/*
* Claim any unallocated resources to keep other
* devices from using them.
*/
STAILQ_FOREACH(rle, rl, link) {
if (!rle->res) {
int rid = rle->rid;
resource_list_alloc(rl, dev, child,
rle->type,
&rid, 0, ~0, 1, 0);
}
}
}
}
free(children, M_TEMP);
}
static int
isa_set_resource(device_t dev, device_t child, int type, int rid,
u_long start, u_long count)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY
&& type != SYS_RES_IRQ && type != SYS_RES_DRQ)
return (EINVAL);
if (rid < 0)
return (EINVAL);
if (type == SYS_RES_IOPORT && rid >= ISA_NPORT)
return (EINVAL);
if (type == SYS_RES_MEMORY && rid >= ISA_NMEM)
return (EINVAL);
if (type == SYS_RES_IRQ && rid >= ISA_NIRQ)
return (EINVAL);
if (type == SYS_RES_DRQ && rid >= ISA_NDRQ)
return (EINVAL);
resource_list_add(rl, type, rid, start, start + count - 1, count);
return (0);
}
static struct resource_list *
isa_get_resource_list (device_t dev, device_t child)
{
struct isa_device* idev = DEVTOISA(child);
struct resource_list *rl = &idev->id_resources;
if (!rl)
return (NULL);
return (rl);
}
static int
isa_add_config(device_t dev, device_t child, int priority,
struct isa_config *config)
{
struct isa_device* idev = DEVTOISA(child);
struct isa_config_entry *newice, *ice;
newice = malloc(sizeof *ice, M_DEVBUF, M_NOWAIT);
if (!newice)
return (ENOMEM);
newice->ice_priority = priority;
newice->ice_config = *config;
TAILQ_FOREACH(ice, &idev->id_configs, ice_link) {
if (ice->ice_priority > priority)
break;
}
if (ice)
TAILQ_INSERT_BEFORE(ice, newice, ice_link);
else
TAILQ_INSERT_TAIL(&idev->id_configs, newice, ice_link);
if (isa_has_single_config(child))
idev->id_config_attr &= ~ISACFGATTR_MULTI;
else
idev->id_config_attr |= ISACFGATTR_MULTI;
return (0);
}
static void
isa_set_config_callback(device_t dev, device_t child, isa_config_cb *fn,
void *arg)
{
struct isa_device* idev = DEVTOISA(child);
idev->id_config_cb = fn;
idev->id_config_arg = arg;
}
static int
isa_pnp_probe(device_t dev, device_t child, struct isa_pnp_id *ids)
{
struct isa_device* idev = DEVTOISA(child);
if (!idev->id_vendorid)
return (ENOENT);
while (ids && ids->ip_id) {
/*
* Really ought to support >1 compat id per device.
*/
if (idev->id_logicalid == ids->ip_id
|| idev->id_compatid == ids->ip_id) {
if (ids->ip_desc)
device_set_desc(child, ids->ip_desc);
return (0);
}
ids++;
}
return (ENXIO);
}
static int
isa_child_pnpinfo_str(device_t bus, device_t child, char *buf,
size_t buflen)
{
#ifdef ISAPNP
struct isa_device *idev = DEVTOISA(child);
if (idev->id_vendorid)
snprintf(buf, buflen, "pnpid=%s",
pnp_eisaformat(idev->id_vendorid));
#endif
return (0);
}
static int
isa_child_location_str(device_t bus, device_t child, char *buf,
size_t buflen)
{
/* Nothing here yet */
*buf = '\0';
return (0);
}
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_probe_nomatch, isa_probe_nomatch),
DEVMETHOD(bus_read_ivar, isa_read_ivar),
DEVMETHOD(bus_write_ivar, isa_write_ivar),
DEVMETHOD(bus_child_detached, isa_child_detached),
DEVMETHOD(bus_driver_added, isa_driver_added),
DEVMETHOD(bus_setup_intr, isa_setup_intr),
DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
DEVMETHOD(bus_get_resource_list,isa_get_resource_list),
DEVMETHOD(bus_alloc_resource, isa_alloc_resource),
DEVMETHOD(bus_release_resource, isa_release_resource),
DEVMETHOD(bus_set_resource, isa_set_resource),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_child_pnpinfo_str, isa_child_pnpinfo_str),
DEVMETHOD(bus_child_location_str, isa_child_location_str),
/* ISA interface */
DEVMETHOD(isa_add_config, isa_add_config),
DEVMETHOD(isa_set_config_callback, isa_set_config_callback),
DEVMETHOD(isa_pnp_probe, isa_pnp_probe),
{ 0, 0 }
};
driver_t isa_driver = {
"isa",
isa_methods,
1, /* no softc */
};
devclass_t isa_devclass;
/*
* ISA can be attached to a PCI-ISA bridge, or other locations on some
* platforms.
*/
DRIVER_MODULE(isa, isab, isa_driver, isa_devclass, 0, 0);
DRIVER_MODULE(isa, eisab, isa_driver, isa_devclass, 0, 0);
MODULE_VERSION(isa, 1);
/*
* Code common to ISA bridges.
*/
devclass_t isab_devclass;
int
isab_attach(device_t dev)
{
device_t child;
child = device_add_child(dev, "isa", 0);
if (child != NULL)
return (bus_generic_attach(dev));
return (ENXIO);
}
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