FreeBSD-5.3/sys/dev/mca/mca_bus.c
/*-
* Copyright (c) 1999 Matthew N. Dodd <winter@jurai.net>
* 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: src/sys/dev/mca/mca_bus.c,v 1.13 2003/08/24 17:54:09 obrien Exp $");
/*
* References:
* The CMU Mach3 microkernel
* NetBSD MCA patches by Scott Telford
* Linux MCA code.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/mca/mca_busreg.h>
#include <dev/mca/mca_busvar.h>
#include <sys/interrupt.h>
#define MAX_COL 79
static void mca_reg_print (device_t, char *, char *, int *);
struct mca_device {
struct resource_list rl; /* Resources */
mca_id_t id;
u_int8_t slot;
u_int8_t enabled;
u_int8_t pos[8]; /* Programable Option Select Regs. */
};
/* Not supposed to use this function! */
void
mca_pos_set (dev, reg, data)
device_t dev;
u_int8_t reg;
u_int8_t data;
{
struct mca_device * m_dev = device_get_ivars(dev);
u_int8_t slot = mca_get_slot(dev);
if ((slot > MCA_MAX_ADAPTERS) || (reg > MCA_POS7))
return;
/* Disable motherboard setup */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
/* Select adapter setup regs */
outb(MCA_ADAP_SETUP_REG, ((slot & 0x0f) | MCA_ADAP_SET));
/* Write the register */
outb(MCA_POS_REG(reg), data);
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
/* Update the IVAR copy */
m_dev->pos[reg] = data;
return;
}
u_int8_t
mca_pos_get (dev, reg)
device_t dev;
u_int8_t reg;
{
u_int8_t slot = mca_get_slot(dev);
u_int8_t data = 0;
if ((slot > MCA_MAX_ADAPTERS) || (reg > MCA_POS7))
return (0);
/* Disable motherboard setup */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
switch (slot) {
case MCA_MB_SCSI_SLOT:
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
/* Select motherboard video setup regs */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_SCSI);
/* read the register */
data = inb(MCA_POS_REG(reg));
/* Disable motherboard setup */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
break;
case MCA_MB_VIDEO_SLOT:
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
/* Select motherboard scsi setup regs */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_VIDEO);
/* read the register */
data = inb(MCA_POS_REG(reg));
/* Disable motherboard setup */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
break;
default:
/* Select adapter setup regs */
outb(MCA_ADAP_SETUP_REG,
((slot & 0x0f) | MCA_ADAP_SET));
/* read the register */
data = inb(MCA_POS_REG(reg));
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
break;
}
return (data);
}
const char *
mca_match_id (id, mca_devs)
u_int16_t id;
struct mca_ident * mca_devs;
{
struct mca_ident * m = mca_devs;
while(m->name != NULL) {
if (id == m->id)
return (m->name);
m++;
}
return (NULL);
}
u_int8_t
mca_pos_read (dev, reg)
device_t dev;
u_int8_t reg;
{
struct mca_device * m_dev = device_get_ivars(dev);
if (reg > MCA_POS7)
return (0);
return (m_dev->pos[reg]);
}
void
mca_add_irq (dev, irq)
device_t dev;
int irq;
{
struct mca_device * m_dev = device_get_ivars(dev);
int rid = 0;
while (resource_list_find(&(m_dev->rl), SYS_RES_IRQ, rid)) rid++;
resource_list_add(&(m_dev->rl), SYS_RES_IRQ, rid, irq, irq, 1);
return;
}
void
mca_add_drq (dev, drq)
device_t dev;
int drq;
{
struct mca_device * m_dev = device_get_ivars(dev);
int rid = 0;
while (resource_list_find(&(m_dev->rl), SYS_RES_DRQ, rid)) rid++;
resource_list_add(&(m_dev->rl), SYS_RES_DRQ, rid, drq, drq, 1);
return;
}
void
mca_add_mspace (dev, mbase, msize)
device_t dev;
u_long mbase;
u_long msize;
{
struct mca_device * m_dev = device_get_ivars(dev);
int rid = 0;
while (resource_list_find(&(m_dev->rl), SYS_RES_MEMORY, rid)) rid++;
resource_list_add(&(m_dev->rl), SYS_RES_MEMORY, rid,
mbase, (mbase + msize), msize);
return;
}
void
mca_add_iospace (dev, iobase, iosize)
device_t dev;
u_long iobase;
u_long iosize;
{
struct mca_device * m_dev = device_get_ivars(dev);
int rid = 0;
while (resource_list_find(&(m_dev->rl), SYS_RES_IOPORT, rid)) rid++;
resource_list_add(&(m_dev->rl), SYS_RES_IOPORT, rid,
iobase, (iobase + iosize), iosize);
return;
}
static int
mca_probe (device_t dev)
{
device_t child;
struct mca_device * m_dev = NULL;
int devices_found = 0;
u_int8_t slot;
u_int8_t reg;
device_set_desc(dev, "MCA bus");
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
/* Disable motherboard setup */
outb(MCA_MB_SETUP_REG, MCA_MB_SETUP_DIS);
if (bootverbose) {
printf("POS REG 00 01 02 03 04 05 06 07\n");
printf("-----------------------------------\n");
}
for (slot = 0; slot < MCA_MAX_SLOTS; slot++) {
if (!m_dev) {
m_dev = (struct mca_device *)malloc(sizeof(*m_dev),
M_DEVBUF, M_NOWAIT);
if (!m_dev) {
device_printf(dev, "cannot malloc mca_device");
break;
}
}
bzero(m_dev, sizeof(*m_dev));
/* Select adapter setup regs */
outb(MCA_ADAP_SETUP_REG, ((slot & 0x0f) | MCA_ADAP_SET));
/* Read the POS registers */
for (reg = MCA_POS0; reg <= MCA_POS7; reg++) {
m_dev->pos[reg] = inb(MCA_POS_REG(reg));
}
/* Disable adapter setup */
outb(MCA_ADAP_SETUP_REG, MCA_ADAP_SETUP_DIS);
if (bootverbose) {
printf("mca slot %d:", slot + 1);
for (reg = MCA_POS0; reg <= MCA_POS7; reg++) {
printf(" %02x", m_dev->pos[reg]);
}
printf("\n");
}
m_dev->id = (u_int16_t)m_dev->pos[MCA_POS0] |
((u_int16_t)m_dev->pos[MCA_POS1] << 8);
if (m_dev->id == 0xffff) {
continue;
}
devices_found++;
m_dev->enabled = (m_dev->pos[MCA_POS2] & MCA_POS2_ENABLE);
m_dev->slot = slot;
resource_list_init(&(m_dev->rl));
child = device_add_child(dev, NULL, -1);
device_set_ivars(child, m_dev);
m_dev = NULL;
}
if (m_dev) {
free(m_dev, M_DEVBUF);
}
return (devices_found ? 0 : ENXIO);
}
static void
mca_reg_print (dev, string, separator, column)
device_t dev;
char * string;
char * separator;
int * column;
{
int length = strlen(string);
length += (separator ? 2 : 1);
if (((*column) + length) >= MAX_COL) {
printf("\n");
(*column) = 0;
} else if ((*column) != 0) {
if (separator) {
printf("%c", *separator);
(*column)++;
}
printf(" ");
(*column)++;
}
if ((*column) == 0) {
(*column) += device_printf(dev, "%s", string);
} else {
(*column) += printf("%s", string);
}
return;
}
static int
mca_print_child (device_t dev, device_t child)
{
char buf[MAX_COL+1];
struct mca_device * m_dev = device_get_ivars(child);
int rid;
struct resource_list_entry * rle;
char separator = ',';
int column = 0;
int retval = 0;
if (device_get_desc(child)) {
snprintf(buf, sizeof(buf), "<%s>", device_get_desc(child));
mca_reg_print(child, buf, NULL, &column);
}
rid = 0;
while ((rle = resource_list_find(&(m_dev->rl), SYS_RES_IOPORT, rid++))) {
if (rle->count == 1) {
snprintf(buf, sizeof(buf), "%s%lx",
((rid == 1) ? "io 0x" : "0x"),
rle->start);
} else {
snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
((rid == 1) ? "io 0x" : "0x"),
rle->start,
(rle->start + rle->count));
}
mca_reg_print(child, buf,
((rid == 2) ? &separator : NULL), &column);
}
rid = 0;
while ((rle = resource_list_find(&(m_dev->rl), SYS_RES_MEMORY, rid++))) {
if (rle->count == 1) {
snprintf(buf, sizeof(buf), "%s%lx",
((rid == 1) ? "mem 0x" : "0x"),
rle->start);
} else {
snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
((rid == 1) ? "mem 0x" : "0x"),
rle->start,
(rle->start + rle->count));
}
mca_reg_print(child, buf,
((rid == 2) ? &separator : NULL), &column);
}
rid = 0;
while ((rle = resource_list_find(&(m_dev->rl), SYS_RES_IRQ, rid++))) {
snprintf(buf, sizeof(buf), "irq %ld", rle->start);
mca_reg_print(child, buf,
((rid == 1) ? &separator : NULL), &column);
}
rid = 0;
while ((rle = resource_list_find(&(m_dev->rl), SYS_RES_DRQ, rid++))) {
snprintf(buf, sizeof(buf), "drq %lx", rle->start);
mca_reg_print(child, buf,
((rid == 1) ? &separator : NULL), &column);
}
snprintf(buf, sizeof(buf), "on %s id %04x slot %d\n",
device_get_nameunit(dev),
mca_get_id(child), mca_get_slot(child)+1);
mca_reg_print(child, buf, NULL, &column);
return (retval);
}
static void
mca_probe_nomatch (device_t dev, device_t child)
{
mca_id_t mca_id = mca_get_id(child);
u_int8_t slot = mca_get_slot(child);
u_int8_t enabled = mca_get_enabled(child);
device_printf(dev, "unknown card (id 0x%04x, %s) at slot %d\n",
mca_id,
(enabled ? "enabled" : "disabled"),
slot + 1);
return;
}
static int
mca_read_ivar (device_t dev, device_t child, int which, u_long * result)
{
struct mca_device * m_dev = device_get_ivars(child);
switch (which) {
case MCA_IVAR_SLOT:
*result = m_dev->slot;
break;
case MCA_IVAR_ID:
*result = m_dev->id;
break;
case MCA_IVAR_ENABLED:
*result = m_dev->enabled;
break;
default:
return (ENOENT);
break;
}
return (0);
}
static struct resource *
mca_alloc_resource (device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct mca_device * m_dev = device_get_ivars(child);
struct resource_list_entry * rle;
int isdefault;
int passthrough;
isdefault = (start == 0UL && end == ~0UL);
passthrough = (device_get_parent(child) != dev);
if (!passthrough && !isdefault) {
rle = resource_list_find(&(m_dev->rl), type, *rid);
if (!rle) {
resource_list_add(&(m_dev->rl), type, *rid,
start, end, count);
}
}
if (type == SYS_RES_IRQ) {
flags |= RF_SHAREABLE;
}
return (resource_list_alloc(&(m_dev->rl), dev, child, type, rid,
start, end, count, flags));
}
static struct resource_list *
mca_get_resource_list (device_t dev, device_t child)
{
struct mca_device * m_dev = device_get_ivars(child);
struct resource_list * rl = &m_dev->rl;
if (!rl)
return (NULL);
return (rl);
}
static device_method_t mca_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mca_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, mca_print_child),
DEVMETHOD(bus_probe_nomatch, mca_probe_nomatch),
DEVMETHOD(bus_read_ivar, mca_read_ivar),
DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_get_resource_list,mca_get_resource_list),
DEVMETHOD(bus_alloc_resource, mca_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_set_resource, bus_generic_rl_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),
{ 0, 0 }
};
static driver_t mca_driver = {
"mca",
mca_methods,
1, /* no softc */
};
static devclass_t mca_devclass;
DRIVER_MODULE(mca, legacy, mca_driver, mca_devclass, 0, 0);