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/*
* Written by Billie Alsup (balsup@tfs.com)
* for TRW Financial Systems for use under the MACH(2.5)and OSF/1 operating
* systems.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* $Id: eisaconf.c,v 1.1 1995/04/23 08:55:41 julian Exp $
*/
/*
* Ported to run under FreeBSD by Julian Elischer (julian@tfs.com) Sept 1992
*/
#include <sys/param.h>
#include <sys/systm.h> /* isn't it a joy */
#include <sys/kernel.h> /* to have three of these */
#include <sys/conf.h>
#include "sys/types.h"
#include "i386/isa/icu.h"
#include "i386/isa/isa_device.h" /*we're a superset, so we need this */
#include "eisaconf.h"
struct isa_device eisaSlot[EISA_SLOTS];
struct isa_device isa_devtab_eisa[EISA_SLOTS+1];
int nexttab = 0;
extern struct eisa_dev eisa_dev[];
#define EISA_MAKEID(p) ((((p)[0]&0x1F)<<10)|(((p)[1]&0x1F)<<5)|(((p)[2]&0x1F)))
#define EISA_ID0(i) ((((i)>>10)&0x1F)+0x40)
#define EISA_ID1(i) ((((i)>>5)&0x1F)+0x40)
#define EISA_ID2(i) (((i)&0x1F)+0x40)
/*
** probe for EISA devices
*/
void
eisa_configure()
{
int i,j,slot,found,numports;
unsigned int checkthese;
struct eisa_dev *edev_p;
int eisaBase = 0xC80;
unsigned short productID, productType;
unsigned char productRevision,controlBits;
static char hexdigit[] = "0123456789ABCDEF";
#define HEXDIGIT(i) hexdigit[(i)&0x0f]
outb(eisaBase,0xFF);
productID = inb(eisaBase);
if (productID & 0x80) {
printf("Warning: running EISA kernel on non-EISA system board\n");
return;
}
printf("Probing for devices on EISA bus\n");
productID = (productID<<8) | inb(eisaBase+1);
productRevision = inb(eisaBase+2);
printf("EISA0: %c%c%c v%d (System Board)\n"
,EISA_ID0(productID)
,EISA_ID1(productID)
,EISA_ID2(productID)
,(productRevision&7));
for (slot=1; eisaBase += 0x1000, slot < EISA_SLOTS; slot++) {
outb(eisaBase,0xFF);
productID = inb(eisaBase);
if (productID & 0x80) continue; /* no EISA card in slot */
productID = (productID<<8) | inb(eisaBase+1);
productType = inb(eisaBase+2);
productRevision = inb(eisaBase+3);
productType = (productType<<4) | (productRevision>>4);
productRevision &= 15;
controlBits = inb(eisaBase+4);
printf("EISA%d: %c%c%c-%c%c%c.%x\n"
,slot,EISA_ID0(productID),EISA_ID1(productID),EISA_ID2(productID)
,HEXDIGIT(productType>>8)
,HEXDIGIT(productType>>4)
,HEXDIGIT(productType)
,productRevision);
if (!(controlBits & 1)) {
printf("...Card is disabled\n");
/* continue;*/
}
/*
** See if we recognize this product
*/
for (edev_p = eisa_dev,found=0; edev_p->productID[0]; edev_p++) {
struct isa_device *dev_p;
struct isa_driver *drv_p;
unsigned short configuredID;
configuredID = EISA_MAKEID(edev_p->productID);
if (configuredID != productID) continue;
if (edev_p->productType != productType) continue;
if (edev_p->productRevision > productRevision) continue;
/*
** we're assuming:
** if different drivers for the same board exist
** (due to some revision incompatibility), that the
** drivers will be listed in descending revision
** order. The revision in the eisaDevs structure
** should indicate the lowest revision supported
** by the code.
**
*/
dev_p = &eisaSlot[slot];
memcpy(dev_p,&edev_p->isa_dev,sizeof(edev_p->isa_dev));
drv_p = dev_p->id_driver;
dev_p->id_iobase = eisaBase; /* may get ammended by driver */
#if defined(DEBUG)
printf("eisaProbe: probing %s%d\n"
,drv_p->driver_name, dev_p->id_unit);
#endif /* defined(DEBUG) */
if (!(numports = drv_p->probe(dev_p))) {
continue; /* try another eisa device */
}
edev_p->isa_dev.id_unit++; /*dubious*/
/** this should all be put in some common routine **/
printf("%s%d", drv_p->name, dev_p->id_unit);
if (numports != -1) {
printf(" at 0x%x", dev_p->id_iobase);
if ((dev_p->id_iobase + numports - 1) != dev_p->id_iobase) {
printf("-0x%x", dev_p->id_iobase + numports - 1);
}
}
if (dev_p->id_irq)
printf(" irq %d", ffs(dev_p->id_irq) - 1);
if (dev_p->id_drq != -1)
printf(" drq %d", dev_p->id_drq);
if (dev_p->id_maddr)
printf(" maddr 0x%lx", kvtop(dev_p->id_maddr));
if (dev_p->id_msize)
printf(" msize %d", dev_p->id_msize);
if (dev_p->id_flags)
printf(" flags 0x%x", dev_p->id_flags);
if (dev_p->id_iobase) {
if (dev_p->id_iobase < 0x100) {
printf(" on motherboard\n");
} else {
if (dev_p->id_iobase >= 0x1000) {
printf (" on EISA\n");
} else {
printf (" on ISA emulation\n");
}
}
}
/*
** Now look for any live devices with the same starting I/O port and
** give up if we clash
**
** what i'd really like is to set is how many i/o ports are in use.
** but that isn't in this structure...
**
*/
checkthese = 0;
if(dev_p->id_iobase ) checkthese |= CC_IOADDR;
if(dev_p->id_drq != -1 ) checkthese |= CC_DRQ;
if(dev_p->id_irq ) checkthese |= CC_IRQ;
if(dev_p->id_maddr ) checkthese |= CC_MEMADDR;
/* this may be stupid, it's probably too late if we clash here */
if(haveseen_isadev( dev_p,checkthese))
break; /* we can't proceed due to collision. bail */
/* mark ourselves in existence and then put us in the eisa list */
/* so that other things check against US for a clash */
dev_p->id_alive = (numports == -1? 1 : numports);
memcpy(&(isa_devtab_eisa[nexttab]),dev_p,sizeof(edev_p->isa_dev));
drv_p->attach(dev_p);
if (dev_p->id_irq) {
if (edev_p->imask)
INTRMASK(*(edev_p->imask), dev_p->id_irq);
register_intr(ffs(dev_p->id_irq) - 1, dev_p->id_id,
dev_p->id_ri_flags, dev_p->id_intr,
edev_p->imask, dev_p->id_unit);
INTREN(dev_p->id_irq);
}
found = 1;
nexttab++;
break; /* go look at next slot*/
}/* end of loop on known devices */
if (!found) {
printf("...No driver installed for board\n");
}
}/* end of loop on slots */
}/* end of routine */
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