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/*-
* EISA bus probe and attach routines
*
* Copyright (c) 1995, 1996 Justin T. Gibbs.
* 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 immediately at the beginning of the file, without modification,
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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: release/9.1.0/sys/dev/eisa/eisaconf.c 229093 2011-12-31 14:12:12Z hselasky $");
#include "opt_eisa.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <sys/limits.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/eisa/eisaconf.h>
typedef struct resvaddr {
u_long addr; /* start address */
u_long size; /* size of reserved area */
int flags;
struct resource *res; /* resource manager handle */
LIST_ENTRY(resvaddr) links; /* List links */
} resvaddr_t;
LIST_HEAD(resvlist, resvaddr);
struct irq_node {
int irq_no;
int irq_trigger;
void *idesc;
TAILQ_ENTRY(irq_node) links;
};
TAILQ_HEAD(irqlist, irq_node);
struct eisa_ioconf {
int slot;
struct resvlist ioaddrs; /* list of reserved I/O ranges */
struct resvlist maddrs; /* list of reserved memory ranges */
struct irqlist irqs; /* list of reserved irqs */
};
/* To be replaced by the "super device" generic device structure... */
struct eisa_device {
eisa_id_t id;
struct eisa_ioconf ioconf;
};
#define MAX_COL 79
#ifndef EISA_SLOTS
#define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */
#endif
int num_eisa_slots = EISA_SLOTS;
TUNABLE_INT("hw.eisa_slots", &num_eisa_slots);
static devclass_t eisa_devclass;
static int eisa_probe_slot(int slot, eisa_id_t *eisa_id);
static struct irq_node *eisa_find_irq(struct eisa_device *e_dev, int rid);
static struct resvaddr *eisa_find_maddr(struct eisa_device *e_dev, int rid);
static struct resvaddr *eisa_find_ioaddr(struct eisa_device *e_dev, int rid);
static int
mainboard_probe(device_t dev)
{
char *idstring;
eisa_id_t id = eisa_get_id(dev);
if (eisa_get_slot(dev) != 0)
return (ENXIO);
idstring = (char *)malloc(8 + sizeof(" (System Board)") + 1,
M_DEVBUF, M_NOWAIT);
if (idstring == NULL)
panic("Eisa probe unable to malloc");
sprintf(idstring, "%c%c%c%03x%01x (System Board)",
EISA_MFCTR_CHAR0(id), EISA_MFCTR_CHAR1(id), EISA_MFCTR_CHAR2(id),
EISA_PRODUCT_ID(id), EISA_REVISION_ID(id));
device_set_desc(dev, idstring);
return (0);
}
static int
mainboard_attach(device_t dev)
{
return (0);
}
static device_method_t mainboard_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mainboard_probe),
DEVMETHOD(device_attach, mainboard_attach),
{ 0, 0 }
};
static driver_t mainboard_driver = {
"mainboard",
mainboard_methods,
1,
};
static devclass_t mainboard_devclass;
DRIVER_MODULE(mainboard, eisa, mainboard_driver, mainboard_devclass, 0, 0);
/*
** probe for EISA devices
*/
static int
eisa_probe(device_t dev)
{
int devices_found, slot;
struct eisa_device *e_dev;
device_t child;
eisa_id_t eisa_id;
device_set_desc(dev, "EISA bus");
devices_found = 0;
for (slot = 0; slot < num_eisa_slots; slot++) {
eisa_id = 0;
if (eisa_probe_slot(slot, &eisa_id)) {
/*
* If there's no card in the first slot (the
* mainboard), then the system doesn't have EISA.
* We abort the probe early in this case since
* continuing on causes a hang on some systems.
* Interestingly enough, the inb has been seen to
* cause the hang.
*/
if (slot == 0)
break;
continue;
}
devices_found++;
/* Prepare an eisa_device_node for this slot */
e_dev = (struct eisa_device *)malloc(sizeof(*e_dev),
M_DEVBUF, M_NOWAIT|M_ZERO);
if (!e_dev) {
device_printf(dev, "cannot malloc eisa_device");
break; /* Try to attach what we have already */
}
e_dev->id = eisa_id;
e_dev->ioconf.slot = slot;
/* Initialize our lists of reserved addresses */
LIST_INIT(&(e_dev->ioconf.ioaddrs));
LIST_INIT(&(e_dev->ioconf.maddrs));
TAILQ_INIT(&(e_dev->ioconf.irqs));
child = device_add_child(dev, NULL, -1);
device_set_ivars(child, e_dev);
}
/*
* EISA busses themselves are not easily detectable, the easiest way
* to tell if there is an eisa bus is if we found something - there
* should be a motherboard "card" there somewhere.
*/
return (devices_found ? 0 : ENXIO);
}
static int
eisa_probe_slot(int slot, eisa_id_t *eisa_id)
{
eisa_id_t probe_id;
int base, i, id_size;
probe_id = 0;
id_size = sizeof(probe_id);
base = 0x0c80 + (slot * 0x1000);
for (i = 0; i < id_size; i++)
probe_id |= inb(base + i) << ((id_size - i - 1) * CHAR_BIT);
/* If we found a card, return its EISA id. */
if ((probe_id & 0x80000000) == 0) {
*eisa_id = probe_id;
return (0);
}
return (ENXIO);
}
static void
eisa_probe_nomatch(device_t dev, device_t child)
{
u_int32_t eisa_id = eisa_get_id(child);
u_int8_t slot = eisa_get_slot(child);
device_printf(dev, "%c%c%c%03x%01x (0x%08x) at slot %d (no driver attached)\n",
EISA_MFCTR_CHAR0(eisa_id), EISA_MFCTR_CHAR1(eisa_id),
EISA_MFCTR_CHAR2(eisa_id), EISA_PRODUCT_ID(eisa_id),
EISA_REVISION_ID(eisa_id), eisa_id, slot);
return;
}
static int
eisa_print_child(device_t dev, device_t child)
{
struct eisa_device * e_dev = device_get_ivars(child);
int rid;
struct irq_node * irq;
struct resvaddr * resv;
int retval = 0;
retval += bus_print_child_header(dev, child);
rid = 0;
while ((resv = eisa_find_ioaddr(e_dev, rid++))) {
if (resv->size == 1 || (resv->flags & RESVADDR_BITMASK))
retval += printf("%s%lx", rid == 1 ? " port 0x" : ",0x",
resv->addr);
else
retval += printf("%s%lx-0x%lx", rid == 1 ? " port 0x" :
",0x", resv->addr, resv->addr + resv->size - 1);
}
rid = 0;
while ((resv = eisa_find_maddr(e_dev, rid++))) {
if (resv->size == 1 || (resv->flags & RESVADDR_BITMASK))
retval += printf("%s%lx", rid == 1 ? " mem 0x" : ",0x",
resv->addr);
else
retval += printf("%s%lx-0x%lx", rid == 1 ? " mem 0x" :
",0x", resv->addr, resv->addr + resv->size - 1);
}
rid = 0;
while ((irq = eisa_find_irq(e_dev, rid++)) != NULL)
retval += printf(" irq %d (%s)", irq->irq_no,
irq->irq_trigger ? "level" : "edge");
retval += printf(" at slot %d on %s\n", eisa_get_slot(child),
device_get_nameunit(dev));
return (retval);
}
static struct irq_node *
eisa_find_irq(struct eisa_device *e_dev, int rid)
{
int i;
struct irq_node *irq;
for (i = 0, irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
i < rid && irq != NULL; i++, irq = TAILQ_NEXT(irq, links))
continue;
return (irq);
}
static struct resvaddr *
eisa_find_maddr(struct eisa_device *e_dev, int rid)
{
int i;
struct resvaddr *resv;
for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.maddrs);
i < rid && resv != NULL; i++, resv = LIST_NEXT(resv, links))
continue;
return (resv);
}
static struct resvaddr *
eisa_find_ioaddr(struct eisa_device *e_dev, int rid)
{
int i;
struct resvaddr *resv;
for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.ioaddrs);
i < rid && resv != NULL; i++, resv = LIST_NEXT(resv, links))
continue;
return (resv);
}
static int
eisa_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct eisa_device *e_dev = device_get_ivars(child);
struct irq_node *irq;
switch (which) {
case EISA_IVAR_SLOT:
*result = e_dev->ioconf.slot;
break;
case EISA_IVAR_ID:
*result = e_dev->id;
break;
case EISA_IVAR_IRQ:
/* XXX only first irq */
if ((irq = eisa_find_irq(e_dev, 0)) != NULL)
*result = irq->irq_no;
else
*result = -1;
break;
default:
return (ENOENT);
}
return (0);
}
static int
eisa_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
return (EINVAL);
}
static struct resource *
eisa_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
int isdefault;
struct eisa_device *e_dev = device_get_ivars(child);
struct resource *rv, **rvp = 0;
isdefault = (device_get_parent(child) == dev &&
start == 0UL && end == ~0UL && count == 1);
switch (type) {
case SYS_RES_IRQ:
if (isdefault) {
struct irq_node * irq = eisa_find_irq(e_dev, *rid);
if (irq == NULL)
return (NULL);
start = end = irq->irq_no;
count = 1;
if (irq->irq_trigger == EISA_TRIGGER_LEVEL)
flags |= RF_SHAREABLE;
else
flags &= ~RF_SHAREABLE;
}
break;
case SYS_RES_MEMORY:
if (isdefault) {
struct resvaddr *resv;
resv = eisa_find_maddr(e_dev, *rid);
if (resv == NULL)
return (NULL);
start = resv->addr;
end = resv->addr + (resv->size - 1);
count = resv->size;
rvp = &resv->res;
}
break;
case SYS_RES_IOPORT:
if (isdefault) {
struct resvaddr *resv;
resv = eisa_find_ioaddr(e_dev, *rid);
if (resv == NULL)
return (NULL);
start = resv->addr;
end = resv->addr + (resv->size - 1);
count = resv->size;
rvp = &resv->res;
}
break;
default:
return 0;
}
rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
type, rid, start, end, count, flags);
if (rvp)
*rvp = rv;
return (rv);
}
static int
eisa_release_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
int rv;
struct eisa_device *e_dev = device_get_ivars(child);
struct resvaddr *resv = 0;
switch (type) {
case SYS_RES_IRQ:
if (eisa_find_irq(e_dev, rid) == NULL)
return (EINVAL);
break;
case SYS_RES_MEMORY:
if (device_get_parent(child) == dev)
resv = eisa_find_maddr(e_dev, rid);
break;
case SYS_RES_IOPORT:
if (device_get_parent(child) == dev)
resv = eisa_find_ioaddr(e_dev, rid);
break;
default:
return (ENOENT);
}
rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r);
if (rv == 0) {
if (resv != NULL)
resv->res = 0;
}
return (rv);
}
static int
eisa_add_intr_m(device_t eisa, device_t dev, int irq, int trigger)
{
struct eisa_device *e_dev = device_get_ivars(dev);
struct irq_node *irq_info;
irq_info = (struct irq_node *)malloc(sizeof(*irq_info), M_DEVBUF,
M_NOWAIT);
if (irq_info == NULL)
return (1);
irq_info->irq_no = irq;
irq_info->irq_trigger = trigger;
irq_info->idesc = NULL;
TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links);
return (0);
}
static int
eisa_add_resvaddr(struct eisa_device *e_dev, struct resvlist *head, u_long base,
u_long size, int flags)
{
resvaddr_t *reservation;
reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t),
M_DEVBUF, M_NOWAIT);
if(!reservation)
return (ENOMEM);
reservation->addr = base;
reservation->size = size;
reservation->flags = flags;
if (!LIST_FIRST(head)) {
LIST_INSERT_HEAD(head, reservation, links);
}
else {
resvaddr_t *node;
LIST_FOREACH(node, head, links) {
if (node->addr > reservation->addr) {
/*
* List is sorted in increasing
* address order.
*/
LIST_INSERT_BEFORE(node, reservation, links);
break;
}
if (node->addr == reservation->addr) {
/*
* If the entry we want to add
* matches any already in here,
* fail.
*/
free(reservation, M_DEVBUF);
return (EEXIST);
}
if (!LIST_NEXT(node, links)) {
LIST_INSERT_AFTER(node, reservation, links);
break;
}
}
}
return (0);
}
static int
eisa_add_mspace_m(device_t eisa, device_t dev, u_long mbase, u_long msize,
int flags)
{
struct eisa_device *e_dev = device_get_ivars(dev);
return (eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize,
flags));
}
static int
eisa_add_iospace_m(device_t eisa, device_t dev, u_long iobase, u_long iosize,
int flags)
{
struct eisa_device *e_dev = device_get_ivars(dev);
return (eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase,
iosize, flags));
}
static device_method_t eisa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, eisa_probe),
DEVMETHOD(device_attach, bus_generic_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, eisa_print_child),
DEVMETHOD(bus_probe_nomatch, eisa_probe_nomatch),
DEVMETHOD(bus_read_ivar, eisa_read_ivar),
DEVMETHOD(bus_write_ivar, eisa_write_ivar),
DEVMETHOD(bus_alloc_resource, eisa_alloc_resource),
DEVMETHOD(bus_release_resource, eisa_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* EISA interface */
DEVMETHOD(eisa_add_intr, eisa_add_intr_m),
DEVMETHOD(eisa_add_iospace, eisa_add_iospace_m),
DEVMETHOD(eisa_add_mspace, eisa_add_mspace_m),
DEVMETHOD_END
};
static driver_t eisa_driver = {
"eisa",
eisa_methods,
1, /* no softc */
};
DRIVER_MODULE(eisa, eisab, eisa_driver, eisa_devclass, 0, 0);
DRIVER_MODULE(eisa, legacy, eisa_driver, eisa_devclass, 0, 0);