212 lines
6.6 KiB
C
212 lines
6.6 KiB
C
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/*
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* Written by Billie Alsup (balsup@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5)and OSF/1 operating
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* systems.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: eisaconf.c,v 1.1 1995/03/13 09:10:17 root Exp root $
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*/
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/*
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* Ported to run under FreeBSD by Julian Elischer (julian@tfs.com) Sept 1992
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*/
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#include <sys/param.h>
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#include <sys/systm.h> /* isn't it a joy */
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#include <sys/kernel.h> /* to have three of these */
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#include <sys/conf.h>
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#include "sys/types.h"
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#include "i386/isa/icu.h"
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#include "i386/isa/isa_device.h" /*we're a superset, so we need this */
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#include "eisaconf.h"
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struct isa_device eisaSlot[EISA_SLOTS];
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struct isa_device isa_devtab_eisa[EISA_SLOTS+1];
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int nexttab = 0;
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extern struct eisa_dev eisa_dev[];
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#define EISA_MAKEID(p) ((((p)[0]&0x1F)<<10)|(((p)[1]&0x1F)<<5)|(((p)[2]&0x1F)))
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#define EISA_ID0(i) ((((i)>>10)&0x1F)+0x40)
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#define EISA_ID1(i) ((((i)>>5)&0x1F)+0x40)
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#define EISA_ID2(i) (((i)&0x1F)+0x40)
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/*
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** probe for EISA devices
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*/
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void
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eisa_configure()
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{
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int i,j,slot,found,numports;
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unsigned int checkthese;
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struct eisa_dev *edev_p;
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int eisaBase = 0xC80;
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unsigned short productID, productType;
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unsigned char productRevision,controlBits;
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static char hexdigit[] = "0123456789ABCDEF";
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#define HEXDIGIT(i) hexdigit[(i)&0x0f]
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outb(eisaBase,0xFF);
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productID = inb(eisaBase);
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if (productID & 0x80) {
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printf("Warning: running EISA kernel on non-EISA system board\n");
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return;
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}
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printf("Probing for devices on EISA bus\n");
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productID = (productID<<8) | inb(eisaBase+1);
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productRevision = inb(eisaBase+2);
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printf("EISA0: %c%c%c v%d (System Board)\n"
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,EISA_ID0(productID)
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,EISA_ID1(productID)
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,EISA_ID2(productID)
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,(productRevision&7));
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for (slot=1; eisaBase += 0x1000, slot < EISA_SLOTS; slot++) {
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outb(eisaBase,0xFF);
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productID = inb(eisaBase);
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if (productID & 0x80) continue; /* no EISA card in slot */
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productID = (productID<<8) | inb(eisaBase+1);
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productType = inb(eisaBase+2);
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productRevision = inb(eisaBase+3);
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productType = (productType<<4) | (productRevision>>4);
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productRevision &= 15;
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controlBits = inb(eisaBase+4);
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printf("EISA%d: %c%c%c-%c%c%c.%x\n"
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,slot,EISA_ID0(productID),EISA_ID1(productID),EISA_ID2(productID)
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,HEXDIGIT(productType>>8)
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,HEXDIGIT(productType>>4)
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,HEXDIGIT(productType)
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,productRevision);
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if (!(controlBits & 1)) {
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printf("...Card is disabled\n");
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/* continue;*/
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}
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/*
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** See if we recognize this product
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*/
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for (edev_p = eisa_dev,found=0; edev_p->productID[0]; edev_p++) {
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struct isa_device *dev_p;
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struct isa_driver *drv_p;
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unsigned short configuredID;
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configuredID = EISA_MAKEID(edev_p->productID);
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if (configuredID != productID) continue;
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if (edev_p->productType != productType) continue;
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if (edev_p->productRevision > productRevision) continue;
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/*
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** we're assuming:
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** if different drivers for the same board exist
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** (due to some revision incompatibility), that the
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** drivers will be listed in descending revision
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** order. The revision in the eisaDevs structure
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** should indicate the lowest revision supported
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** by the code.
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**
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*/
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dev_p = &eisaSlot[slot];
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memcpy(dev_p,&edev_p->isa_dev,sizeof(edev_p->isa_dev));
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drv_p = dev_p->id_driver;
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dev_p->id_iobase = eisaBase; /* may get ammended by driver */
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#if defined(DEBUG)
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printf("eisaProbe: probing %s%d\n"
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,drv_p->driver_name, dev_p->id_unit);
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#endif /* defined(DEBUG) */
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if (!(numports = drv_p->probe(dev_p))) {
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continue; /* try another eisa device */
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}
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edev_p->isa_dev.id_unit++; /*dubious*/
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/** this should all be put in some common routine **/
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printf("%s%d", drv_p->name, dev_p->id_unit);
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if (numports != -1) {
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printf(" at 0x%x", dev_p->id_iobase);
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if ((dev_p->id_iobase + numports - 1) != dev_p->id_iobase) {
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printf("-0x%x", dev_p->id_iobase + numports - 1);
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}
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}
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if (dev_p->id_irq)
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printf(" irq %d", ffs(dev_p->id_irq) - 1);
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if (dev_p->id_drq != -1)
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printf(" drq %d", dev_p->id_drq);
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if (dev_p->id_maddr)
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printf(" maddr 0x%lx", kvtop(dev_p->id_maddr));
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if (dev_p->id_msize)
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printf(" msize %d", dev_p->id_msize);
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if (dev_p->id_flags)
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printf(" flags 0x%x", dev_p->id_flags);
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if (dev_p->id_iobase) {
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if (dev_p->id_iobase < 0x100) {
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printf(" on motherboard\n");
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} else {
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if (dev_p->id_iobase >= 0x1000) {
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printf (" on EISA\n");
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} else {
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printf (" on ISA emulation\n");
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}
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}
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}
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/*
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** Now look for any live devices with the same starting I/O port and
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** give up if we clash
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**
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** what i'd really like is to set is how many i/o ports are in use.
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** but that isn't in this structure...
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**
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*/
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checkthese = 0;
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if(dev_p->id_iobase ) checkthese |= CC_IOADDR;
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if(dev_p->id_drq != -1 ) checkthese |= CC_DRQ;
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if(dev_p->id_irq ) checkthese |= CC_IRQ;
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if(dev_p->id_maddr ) checkthese |= CC_MEMADDR;
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/* this may be stupid, it's probably too late if we clash here */
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if(haveseen_isadev( dev_p,checkthese))
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break; /* we can't proceed due to collision. bail */
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/* mark ourselves in existence and then put us in the eisa list */
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/* so that other things check against US for a clash */
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dev_p->id_alive = (numports == -1? 1 : numports);
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memcpy(&(isa_devtab_eisa[nexttab]),dev_p,sizeof(edev_p->isa_dev));
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drv_p->attach(dev_p);
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if (dev_p->id_irq) {
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if (edev_p->imask)
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INTRMASK(*(edev_p->imask), dev_p->id_irq);
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register_intr(ffs(dev_p->id_irq) - 1, dev_p->id_id,
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dev_p->id_ri_flags, dev_p->id_intr,
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edev_p->imask, dev_p->id_unit);
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INTREN(dev_p->id_irq);
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}
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found = 1;
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nexttab++;
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break; /* go look at next slot*/
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}/* end of loop on known devices */
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if (!found) {
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printf("...No driver installed for board\n");
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}
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}/* end of loop on slots */
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}/* end of routine */
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