bd95976572
This mistake seems to have been benign until very recently, probably until msmith's PCI code reshuffle which cleaned up a lot of things. Still, my AIC7770 doesn't work again, but it at least probes the EISA bus now.
626 lines
14 KiB
C
626 lines
14 KiB
C
/*
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* EISA bus probe and attach routines
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*
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* Copyright (c) 1995, 1996 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "opt_eisa.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/limits.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/eisa/eisaconf.h>
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typedef struct resvaddr {
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u_long addr; /* start address */
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u_long size; /* size of reserved area */
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int flags;
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struct resource *res; /* resource manager handle */
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LIST_ENTRY(resvaddr) links; /* List links */
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} resvaddr_t;
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LIST_HEAD(resvlist, resvaddr);
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struct irq_node {
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int irq_no;
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int irq_trigger;
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void *idesc;
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TAILQ_ENTRY(irq_node) links;
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};
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TAILQ_HEAD(irqlist, irq_node);
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struct eisa_ioconf {
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int slot;
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struct resvlist ioaddrs; /* list of reserved I/O ranges */
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struct resvlist maddrs; /* list of reserved memory ranges */
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struct irqlist irqs; /* list of reserved irqs */
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};
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/* To be replaced by the "super device" generic device structure... */
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struct eisa_device {
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eisa_id_t id;
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struct eisa_ioconf ioconf;
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};
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/* Global variable, so UserConfig can change it. */
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#define MAX_COL 79
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#ifndef EISA_SLOTS
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#define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */
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#endif
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int num_eisa_slots = EISA_SLOTS;
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static devclass_t eisa_devclass;
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static void eisa_reg_print (device_t, char *, char *, int *);
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static struct irq_node * eisa_find_irq(struct eisa_device *e_dev, int rid);
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static struct resvaddr * eisa_find_maddr(struct eisa_device *e_dev, int rid);
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static struct resvaddr * eisa_find_ioaddr(struct eisa_device *e_dev, int rid);
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static int
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mainboard_probe(device_t dev)
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{
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char *idstring;
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eisa_id_t id = eisa_get_id(dev);
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if (eisa_get_slot(dev) != 0)
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return (ENXIO);
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idstring = (char *)malloc(8 + sizeof(" (System Board)") + 1,
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M_DEVBUF, M_NOWAIT);
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if (idstring == NULL) {
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panic("Eisa probe unable to malloc");
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}
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sprintf(idstring, "%c%c%c%03x%01x (System Board)",
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EISA_MFCTR_CHAR0(id),
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EISA_MFCTR_CHAR1(id),
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EISA_MFCTR_CHAR2(id),
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EISA_PRODUCT_ID(id),
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EISA_REVISION_ID(id));
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device_set_desc(dev, idstring);
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return (0);
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}
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static int
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mainboard_attach(device_t dev)
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{
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return (0);
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}
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static device_method_t mainboard_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, mainboard_probe),
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DEVMETHOD(device_attach, mainboard_attach),
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{ 0, 0 }
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};
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static driver_t mainboard_driver = {
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"mainboard",
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mainboard_methods,
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1,
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};
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static devclass_t mainboard_devclass;
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DRIVER_MODULE(mainboard, eisa, mainboard_driver, mainboard_devclass, 0, 0);
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/*
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** probe for EISA devices
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*/
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static int
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eisa_probe(device_t dev)
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{
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int i,slot;
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struct eisa_device *e_dev;
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device_t child;
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int eisaBase = 0xc80;
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eisa_id_t eisa_id;
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int devices_found = 0;
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device_set_desc(dev, "EISA bus");
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for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) {
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int id_size = sizeof(eisa_id);
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eisa_id = 0;
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for( i = 0; i < id_size; i++ ) {
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outb(eisaBase,0x80 + i); /*Some cards require priming*/
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eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT);
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}
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if (eisa_id & 0x80000000)
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continue; /* no EISA card in slot */
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devices_found++;
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/* Prepare an eisa_device_node for this slot */
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e_dev = (struct eisa_device *)malloc(sizeof(*e_dev),
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M_DEVBUF, M_NOWAIT|M_ZERO);
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if (!e_dev) {
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device_printf(dev, "cannot malloc eisa_device");
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break; /* Try to attach what we have already */
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}
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e_dev->id = eisa_id;
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e_dev->ioconf.slot = slot;
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/* Initialize our lists of reserved addresses */
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LIST_INIT(&(e_dev->ioconf.ioaddrs));
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LIST_INIT(&(e_dev->ioconf.maddrs));
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TAILQ_INIT(&(e_dev->ioconf.irqs));
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child = device_add_child(dev, NULL, -1);
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device_set_ivars(child, e_dev);
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}
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/*
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* EISA busses themselves are not easily detectable, the easiest way
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* to tell if there is an eisa bus is if we found something - there
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* should be a motherboard "card" there somewhere.
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*/
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return devices_found ? 0 : ENXIO;
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}
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static void
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eisa_probe_nomatch(device_t dev, device_t child)
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{
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u_int32_t eisa_id = eisa_get_id(child);
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u_int8_t slot = eisa_get_slot(child);
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device_printf(dev, "unknown card %c%c%c%03x%01x (0x%08x) at slot %d\n",
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EISA_MFCTR_CHAR0(eisa_id),
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EISA_MFCTR_CHAR1(eisa_id),
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EISA_MFCTR_CHAR2(eisa_id),
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EISA_PRODUCT_ID(eisa_id),
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EISA_REVISION_ID(eisa_id),
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eisa_id,
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slot);
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return;
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}
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static void
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eisa_reg_print (dev, string, separator, column)
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device_t dev;
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char * string;
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char * separator;
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int * column;
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{
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int length = strlen(string);
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length += (separator ? 2 : 1);
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if (((*column) + length) >= MAX_COL) {
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printf("\n");
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(*column) = 0;
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} else if ((*column) != 0) {
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if (separator) {
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printf("%c", *separator);
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(*column)++;
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}
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printf(" ");
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(*column)++;
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}
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if ((*column) == 0) {
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(*column) += device_printf(dev, "%s", string);
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} else {
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(*column) += printf("%s", string);
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}
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return;
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}
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static int
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eisa_print_child(device_t dev, device_t child)
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{
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char buf[81];
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struct eisa_device * e_dev = device_get_ivars(child);
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int rid;
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struct irq_node * irq;
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struct resvaddr * resv;
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char separator = ',';
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int column = 0;
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int retval = 0;
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if (device_get_desc(child)) {
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snprintf(buf, sizeof(buf), "<%s>", device_get_desc(child));
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eisa_reg_print(child, buf, NULL, &column);
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}
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rid = 0;
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while ((resv = eisa_find_ioaddr(e_dev, rid++))) {
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if ((resv->size == 1) ||
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(resv->flags & RESVADDR_BITMASK)) {
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snprintf(buf, sizeof(buf), "%s%lx",
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((rid == 1) ? "at 0x" : "0x"),
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resv->addr);
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} else {
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snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
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((rid == 1) ? "at 0x" : "0x"),
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resv->addr,
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(resv->addr + (resv->size - 1)));
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}
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eisa_reg_print(child, buf,
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((rid == 2) ? &separator : NULL), &column);
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}
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rid = 0;
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while ((resv = eisa_find_maddr(e_dev, rid++))) {
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if ((resv->size == 1) ||
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(resv->flags & RESVADDR_BITMASK)) {
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snprintf(buf, sizeof(buf), "%s%lx",
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((rid == 1) ? "at 0x" : "0x"),
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resv->addr);
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} else {
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snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
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((rid == 1) ? "at 0x" : "0x"),
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resv->addr,
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(resv->addr + (resv->size - 1)));
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}
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eisa_reg_print(child, buf,
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((rid == 2) ? &separator : NULL), &column);
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}
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rid = 0;
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while ((irq = eisa_find_irq(e_dev, rid++)) != NULL) {
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snprintf(buf, sizeof(buf), "irq %d (%s)", irq->irq_no,
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(irq->irq_trigger ? "level" : "edge"));
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eisa_reg_print(child, buf,
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((rid == 1) ? &separator : NULL), &column);
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}
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snprintf(buf, sizeof(buf), "on %s slot %d\n",
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device_get_nameunit(dev), eisa_get_slot(child));
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eisa_reg_print(child, buf, NULL, &column);
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return (retval);
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}
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static struct irq_node *
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eisa_find_irq(struct eisa_device *e_dev, int rid)
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{
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int i;
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struct irq_node *irq;
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for (i = 0, irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
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i < rid && irq;
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i++, irq = TAILQ_NEXT(irq, links))
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;
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if (irq)
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return (irq);
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else
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return (NULL);
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}
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static struct resvaddr *
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eisa_find_maddr(struct eisa_device *e_dev, int rid)
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{
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int i;
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struct resvaddr *resv;
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for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.maddrs);
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i < rid && resv;
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i++, resv = LIST_NEXT(resv, links))
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;
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return resv;
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}
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static struct resvaddr *
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eisa_find_ioaddr(struct eisa_device *e_dev, int rid)
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{
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int i;
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struct resvaddr *resv;
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for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.ioaddrs);
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i < rid && resv;
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i++, resv = LIST_NEXT(resv, links))
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;
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return resv;
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}
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static int
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eisa_read_ivar(device_t dev, device_t child, int which, u_long *result)
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{
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struct eisa_device *e_dev = device_get_ivars(child);
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struct irq_node *irq;
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switch (which) {
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case EISA_IVAR_SLOT:
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*result = e_dev->ioconf.slot;
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break;
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case EISA_IVAR_ID:
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*result = e_dev->id;
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break;
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case EISA_IVAR_IRQ:
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/* XXX only first irq */
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if ((irq = eisa_find_irq(e_dev, 0)) != NULL) {
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*result = irq->irq_no;
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} else {
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*result = -1;
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}
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break;
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default:
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return (ENOENT);
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}
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return (0);
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}
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static int
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eisa_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
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{
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return (EINVAL);
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}
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static struct resource *
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eisa_alloc_resource(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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int isdefault;
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struct eisa_device *e_dev = device_get_ivars(child);
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struct resource *rv, **rvp = 0;
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isdefault = (device_get_parent(child) == dev
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&& start == 0UL && end == ~0UL && count == 1);
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switch (type) {
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case SYS_RES_IRQ:
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if (isdefault) {
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struct irq_node * irq = eisa_find_irq(e_dev, *rid);
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if (irq == NULL)
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return 0;
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start = end = irq->irq_no;
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count = 1;
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if (irq->irq_trigger == EISA_TRIGGER_LEVEL) {
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flags |= RF_SHAREABLE;
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} else {
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flags &= ~RF_SHAREABLE;
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}
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}
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break;
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case SYS_RES_MEMORY:
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if (isdefault) {
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struct resvaddr *resv;
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resv = eisa_find_maddr(e_dev, *rid);
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if (!resv)
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return 0;
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start = resv->addr;
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end = resv->addr + (resv->size - 1);
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count = resv->size;
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rvp = &resv->res;
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}
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break;
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case SYS_RES_IOPORT:
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if (isdefault) {
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struct resvaddr *resv;
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resv = eisa_find_ioaddr(e_dev, *rid);
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if (!resv)
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return 0;
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start = resv->addr;
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end = resv->addr + (resv->size - 1);
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count = resv->size;
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rvp = &resv->res;
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}
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break;
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default:
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return 0;
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}
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rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
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type, rid, start, end, count, flags);
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if (rvp)
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*rvp = rv;
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return rv;
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}
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static int
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eisa_release_resource(device_t dev, device_t child, int type, int rid,
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struct resource *r)
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{
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int rv;
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struct eisa_device *e_dev = device_get_ivars(child);
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struct resvaddr *resv = 0;
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switch (type) {
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case SYS_RES_IRQ:
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if (eisa_find_irq(e_dev, rid) == NULL)
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return EINVAL;
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break;
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case SYS_RES_MEMORY:
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if (device_get_parent(child) == dev)
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resv = eisa_find_maddr(e_dev, rid);
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break;
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case SYS_RES_IOPORT:
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if (device_get_parent(child) == dev)
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resv = eisa_find_ioaddr(e_dev, rid);
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break;
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default:
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return (ENOENT);
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}
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rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r);
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if (rv == 0) {
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if (resv)
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resv->res = 0;
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}
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return rv;
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}
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int
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eisa_add_intr(device_t dev, int irq, int trigger)
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{
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struct eisa_device *e_dev = device_get_ivars(dev);
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struct irq_node *irq_info;
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irq_info = (struct irq_node *)malloc(sizeof(*irq_info), M_DEVBUF,
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M_NOWAIT);
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if (irq_info == NULL)
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return (1);
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irq_info->irq_no = irq;
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irq_info->irq_trigger = trigger;
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irq_info->idesc = NULL;
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TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links);
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return 0;
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}
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static int
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eisa_add_resvaddr(struct eisa_device *e_dev, struct resvlist *head, u_long base,
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u_long size, int flags)
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{
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resvaddr_t *reservation;
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reservation = (resvaddr_t *)malloc(sizeof(resvaddr_t),
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M_DEVBUF, M_NOWAIT);
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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);
|
|
}
|
|
|
|
int
|
|
eisa_add_mspace(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);
|
|
}
|
|
|
|
int
|
|
eisa_add_iospace(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_driver_added, bus_generic_driver_added),
|
|
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),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t eisa_driver = {
|
|
"eisa",
|
|
eisa_methods,
|
|
1, /* no softc */
|
|
};
|
|
|
|
DRIVER_MODULE(eisa, eisab, eisa_driver, eisa_devclass, 0, 0);
|
|
DRIVER_MODULE(eisa, nexus, eisa_driver, eisa_devclass, 0, 0);
|