freebsd-skq/sys/dev/eisa/eisaconf.c
1998-05-14 19:47:38 +00:00

662 lines
16 KiB
C

/*
* 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.
*
* $Id: eisaconf.c,v 1.34 1998/02/09 06:08:09 eivind Exp $
*/
#include "opt_eisa.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <machine/limits.h>
#include <i386/eisa/eisaconf.h>
#include <sys/interrupt.h>
struct eisa_device_node{
struct eisa_device dev;
struct eisa_device_node *next;
};
/*
* This should probably be a list of "struct device" once it exists.
* A struct device will incorperate ioconf and driver entry point data
* regardless of how its attached to the system (via unions) as well
* as more generic information that all device types should support (unit
* number, if its installed, etc).
*/
static struct eisa_device_node *eisa_dev_list;
static struct eisa_device_node **eisa_dev_list_tail = &eisa_dev_list;
static u_long eisa_unit;
static struct eisa_driver mainboard_drv = {
"eisa",
NULL,
NULL,
NULL,
&eisa_unit
};
/*
* Add the mainboard_drv to the eisa driver linkerset so that it is
* defined even if no EISA drivers are linked into the kernel.
*/
DATA_SET (eisadriver_set, mainboard_drv);
/*
* Local function declarations and static variables
*/
static void eisa_reg_print __P((struct eisa_device *e_dev,
char *string, char *separator));
static int eisa_add_resvaddr __P((struct eisa_device *e_dev,
struct resvlist *head, u_long base,
u_long size, int flags));
static int eisa_reg_resvaddr __P((struct eisa_device *e_dev,
struct resvlist *head, resvaddr_t *resvaddr,
int *reg_count));
/*
* Keep some state about what we've printed so far
* to make probe output pretty.
*/
static struct {
int in_registration;/* reg_start has been called */
int num_interrupts;
int num_ioaddrs;
int num_maddrs;
int column; /* How much we have output so far. */
#define MAX_COL 80
} reg_state;
/* Global variable, so UserConfig can change it. */
#ifndef EISA_SLOTS
#define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */
#endif
int num_eisa_slots = EISA_SLOTS;
/*
** probe for EISA devices
*/
void
eisa_configure()
{
int i,slot;
struct eisa_device_node *dev_node;
struct eisa_driver **e_drvp;
struct eisa_driver *e_drv;
struct eisa_device *e_dev;
int eisaBase = 0xc80;
eisa_id_t eisa_id;
e_drvp = (struct eisa_driver**)eisadriver_set.ls_items;
for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) {
int id_size = sizeof(eisa_id);
eisa_id = 0;
for( i = 0; i < id_size; i++ ) {
outb(eisaBase,0x80 + i); /*Some cards require priming*/
eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT);
}
if (eisa_id & 0x80000000)
continue; /* no EISA card in slot */
/* Prepare an eisa_device_node for this slot */
dev_node = (struct eisa_device_node *)malloc(sizeof(*dev_node),
M_DEVBUF, M_NOWAIT);
if (!dev_node) {
printf("eisa0: cannot malloc eisa_device_node");
break; /* Try to attach what we have already */
}
bzero(dev_node, sizeof(*dev_node));
e_dev = &(dev_node->dev);
e_dev->id = eisa_id;
e_dev->full_name = "Unattached Device";
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));
*eisa_dev_list_tail = dev_node;
eisa_dev_list_tail = &dev_node->next;
}
dev_node = eisa_dev_list;
/*
* "Attach" the system board
*/
/* The first will be the motherboard in a true EISA system */
if (dev_node && (dev_node->dev.ioconf.slot == 0)) {
char *idstring;
e_dev = &dev_node->dev;
e_dev->driver = &mainboard_drv;
e_dev->unit = (*e_dev->driver->unit)++;
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%x%x (System Board)",
EISA_MFCTR_CHAR0(e_dev->id),
EISA_MFCTR_CHAR1(e_dev->id),
EISA_MFCTR_CHAR2(e_dev->id),
EISA_PRODUCT_ID(e_dev->id),
EISA_REVISION_ID(e_dev->id));
e_dev->full_name = idstring;
printf("%s%ld: <%s>\n",
e_dev->driver->name,
e_dev->unit,
e_dev->full_name);
/* Should set the iosize, but I don't have a spec handy */
printf("Probing for devices on the EISA bus\n");
dev_node = dev_node->next;
}
if (!eisa_dev_list) {
/*
* No devices.
*/
return;
}
/*
* See what devices we recognize.
*/
while((e_drv = *e_drvp++)) {
if (e_drv->probe)
(*e_drv->probe)();
}
/*
* Attach the devices we found in slot order
*/
for (; dev_node; dev_node=dev_node->next) {
e_dev = &dev_node->dev;
e_drv = e_dev->driver;
if (e_drv) {
/*
* Determine the proper unit number for this device.
* Here we should look in the device table generated
* by config to see if this type of device is enabled
* either generically or for this particular address
* as well as determine if a reserved unit number
* should be used. We should also ensure that the
* "next availible unit number" skips over "wired" unit
* numbers. This will be done after config is fixed or
* some other configuration method is chosen.
*/
e_dev->unit = (*e_drv->unit)++;
if ((*e_drv->attach)(e_dev) < 0) {
/* Ensure registration has ended */
reg_state.in_registration = 0;
printf("\n%s0:%d <%s> attach failed\n",
mainboard_drv.name,
e_dev->ioconf.slot,
e_dev->full_name);
continue;
}
/* Ensure registration has ended */
reg_state.in_registration = 0;
}
else {
/* Announce unattached device */
printf("%s0:%d <%c%c%c%x%x=0x%x> unknown device\n",
mainboard_drv.name,
e_dev->ioconf.slot,
EISA_MFCTR_CHAR0(e_dev->id),
EISA_MFCTR_CHAR1(e_dev->id),
EISA_MFCTR_CHAR2(e_dev->id),
EISA_PRODUCT_ID(e_dev->id),
EISA_REVISION_ID(e_dev->id),
e_dev->id);
}
}
}
struct eisa_device *
eisa_match_dev(e_dev, match_func)
struct eisa_device *e_dev;
const char* (*match_func)(eisa_id_t);
{
struct eisa_device_node *e_node = eisa_dev_list;
if (e_dev) {
/* Start our search from the last successful match */
e_node = ((struct eisa_device_node *)e_dev)->next;
}
for(; e_node; e_node = e_node->next) {
const char *result;
if (e_node->dev.driver) {
/* Already claimed */
continue;
}
result = (*match_func)(e_node->dev.id);
if (result) {
e_node->dev.full_name = result;
return (&(e_node->dev));
}
}
return NULL;
}
/* Interrupt and I/O space registration facitlities */
void
eisa_reg_start(e_dev)
struct eisa_device *e_dev;
{
/*
* Announce the device.
*/
char *string;
reg_state.in_registration = 1;
reg_state.num_interrupts = 0;
reg_state.num_ioaddrs = 0;
reg_state.num_maddrs = 0;
reg_state.column = 0;
string = malloc(strlen(e_dev->full_name) + sizeof(" <>") + /*NULL*/1,
M_TEMP, M_NOWAIT);
if(!string) {
printf("eisa0: cannot malloc device description string\n");
return;
}
sprintf(string, " <%s>", e_dev->full_name);
eisa_reg_print(e_dev, string, /*separator=*/NULL);
free(string, M_TEMP);
}
/*
* Output registration information mindfull of screen wrap.
* Output an optional character separator before the string
* if the line does not wrap.
*/
static void
eisa_reg_print(e_dev, string, separator)
struct eisa_device *e_dev;
char *string;
char *separator;
{
int len = strlen(string);
if(separator)
len++;
if(reg_state.column + len > MAX_COL) {
printf("\n");
reg_state.column = 0;
}
else if(separator) {
printf("%c", *separator);
reg_state.column++;
}
if(reg_state.column == 0)
reg_state.column += printf("%s%ld:%s",
e_dev->driver->name,
e_dev->unit,
string);
else
reg_state.column += printf("%s", string);
}
/* Interrupt and I/O space registration facitlities */
void
eisa_reg_end(e_dev)
struct eisa_device *e_dev;
{
if( reg_state.in_registration )
{
char string[25];
sprintf(string, " on %s0 slot %d",
mainboard_drv.name,
e_dev->ioconf.slot);
eisa_reg_print(e_dev, string, NULL);
printf("\n");
reg_state.in_registration = 0;
}
else
printf("eisa_reg_end called outside of a "
"registration session\n");
}
int
eisa_add_intr(e_dev, irq)
struct eisa_device *e_dev;
int irq;
{
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->idesc = NULL;
TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links);
return 0;
}
int
eisa_reg_intr(e_dev, irq, func, arg, maskptr, shared)
struct eisa_device *e_dev;
int irq;
void (*func)(void *);
void *arg;
u_int *maskptr;
int shared;
{
char string[25];
char separator = ',';
#if NOT_YET
/*
* Punt on conflict detection for the moment.
* I want to develop a generic routine to do
* this for all device types.
*/
int checkthese = CC_IRQ;
if (haveseen_dev(dev, checkthese))
return 1;
#endif
if (reg_state.in_registration) {
/*
* Find the first instance of this irq that has a
* NULL idesc.
*/
struct irq_node *cur_irq;
cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
while (cur_irq != NULL) {
if (cur_irq->irq_no == irq
&& cur_irq->idesc == NULL) {
/* XXX use cfg->devdata */
void *dev_instance = (void *)-1;
cur_irq->idesc = intr_create(dev_instance,
irq,
func,
arg,
maskptr, 0);
break;
}
cur_irq = TAILQ_NEXT(cur_irq, links);
}
if (cur_irq == NULL || cur_irq->idesc == NULL)
return (-1);
} else {
return EPERM;
}
sprintf(string, " irq %d", irq);
eisa_reg_print(e_dev, string, reg_state.num_interrupts ?
&separator : NULL);
reg_state.num_interrupts++;
return (0);
}
int
eisa_release_intr(e_dev, irq, func)
struct eisa_device *e_dev;
int irq;
void (*func)(void *);
{
int result;
struct irq_node *cur_irq;
result = -1;
cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
while (cur_irq != NULL) {
if (cur_irq->irq_no == irq) {
struct irq_node *next_irq;
next_irq = TAILQ_NEXT(cur_irq, links);
if (cur_irq->idesc != NULL)
intr_destroy(cur_irq->idesc);
TAILQ_REMOVE(&e_dev->ioconf.irqs, cur_irq, links);
free(cur_irq, M_DEVBUF);
cur_irq = next_irq;
result = 0;
} else {
cur_irq = TAILQ_NEXT(cur_irq, links);
}
}
if (result != 0) {
printf("%s%ld: Attempted to release an interrupt (%d) "
"it doesn't own\n", e_dev->driver->name,
e_dev->unit, irq);
}
return (result);
}
int
eisa_enable_intr(e_dev, irq)
struct eisa_device *e_dev;
int irq;
{
struct irq_node *cur_irq;
int result;
result = -1;
cur_irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
while (cur_irq != NULL) {
if (cur_irq->irq_no == irq
&& cur_irq->idesc != NULL) {
result = intr_connect(cur_irq->idesc);
}
cur_irq = TAILQ_NEXT(cur_irq, links);
}
return (result);
}
static int
eisa_add_resvaddr(e_dev, head, base, size, flags)
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 (!head->lh_first) {
LIST_INSERT_HEAD(head, reservation, links);
}
else {
resvaddr_t *node;
for(node = head->lh_first; node; node = node->links.le_next) {
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 (!node->links.le_next) {
LIST_INSERT_AFTER(node, reservation, links);
break;
}
}
}
return (0);
}
int
eisa_add_mspace(e_dev, mbase, msize, flags)
struct eisa_device *e_dev;
u_long mbase;
u_long msize;
int flags;
{
return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize,
flags);
}
int
eisa_add_iospace(e_dev, iobase, iosize, flags)
struct eisa_device *e_dev;
u_long iobase;
u_long iosize;
int flags;
{
return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase,
iosize, flags);
}
static int
eisa_reg_resvaddr(e_dev, head, resvaddr, reg_count)
struct eisa_device *e_dev;
struct resvlist *head;
resvaddr_t *resvaddr;
int *reg_count;
{
if (reg_state.in_registration) {
resvaddr_t *node;
/*
* Ensure that this resvaddr is actually in the devices'
* reservation list.
*/
for(node = head->lh_first; node;
node = node->links.le_next) {
if (node == resvaddr) {
char buf[35];
char separator = ',';
char *string = buf;
if (*reg_count == 0) {
/* First time */
string += sprintf(string, " at");
}
if (node->size == 1
|| (node->flags & RESVADDR_BITMASK))
sprintf(string, " 0x%lx", node->addr);
else
sprintf(string, " 0x%lx-0x%lx",
node->addr,
node->addr + node->size - 1);
eisa_reg_print(e_dev, buf,
*reg_count ? &separator : NULL);
(*reg_count)++;
return (0);
}
}
return (ENOENT);
}
return EPERM;
}
int
eisa_reg_mspace(e_dev, resvaddr)
struct eisa_device *e_dev;
resvaddr_t *resvaddr;
{
#ifdef NOT_YET
/*
* Punt on conflict detection for the moment.
* I want to develop a generic routine to do
* this for all device types.
*/
int checkthese = CC_MADDR;
if (haveseen_dev(dev, checkthese))
return -1;
#endif
return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.maddrs), resvaddr,
&(reg_state.num_maddrs)));
}
int
eisa_reg_iospace(e_dev, resvaddr)
struct eisa_device *e_dev;
resvaddr_t *resvaddr;
{
#ifdef NOT_YET
/*
* Punt on conflict detection for the moment.
* I want to develop a generic routine to do
* this for all device types.
*/
int checkthese = CC_IOADDR;
if (haveseen_dev(dev, checkthese))
return -1;
#endif
return (eisa_reg_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), resvaddr,
&(reg_state.num_ioaddrs)));
}
int
eisa_registerdev(e_dev, driver)
struct eisa_device *e_dev;
struct eisa_driver *driver;
{
e_dev->driver = driver; /* Driver now owns this device */
return (0);
}