274 lines
7.3 KiB
C
274 lines
7.3 KiB
C
/* $NetBSD: if_lc_isa.c,v 1.1 1997/07/31 21:58:19 matt Exp $ */
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/*-
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* Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
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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, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* DEC EtherWORKS 3 Ethernet Controllers
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*
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* Written by Matt Thomas
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*
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* This driver supports the LEMAC (DE203, DE204, and DE205) cards.
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*/
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/syslog.h>
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#include <sys/select.h>
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#include <sys/device.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <netinet/if_inarp.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#endif
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/ic/lemacreg.h>
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#include <dev/ic/lemacvar.h>
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#include <dev/isa/isavar.h>
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/*
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* This keeps track of which ISAs have been through a lc probe sequence.
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* A simple static variable isn't enough, since it's conceivable that
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* a system might have more than one ISA bus.
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*
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* The "isa_bus" member is a pointer to the parent ISA bus device struct
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* which will unique per ISA bus.
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*/
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#define MAXCARDS_PER_ISABUS 4 /* if you have more than 4, you lose */
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#define MAXSLOTS_PER_BUS 16 /* 0x200-0x3FF in 0x20 incr. */
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struct lemac_isabus {
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LIST_ENTRY(lemac_isabus) isa_link;
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struct device *isa_bus;
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struct lemac_card {
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bus_addr_t iobase;
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bus_addr_t maddr;
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bus_size_t msize;
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int irq;
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int available;
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} isa_cards[MAXCARDS_PER_ISABUS];
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};
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static LIST_HEAD(, lemac_isabus) lemac_isa_buses;
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static int lemac_isa_buses_inited;
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static void
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lemac_isa_card_add(
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struct lemac_isabus *bus,
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bus_addr_t iobase,
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bus_addr_t maddr,
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bus_size_t msize,
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int irq)
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{
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int idx;
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for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) {
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if (bus->isa_cards[idx].available == 0) {
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bus->isa_cards[idx].iobase = iobase;
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bus->isa_cards[idx].maddr = maddr;
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bus->isa_cards[idx].msize = msize;
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bus->isa_cards[idx].irq = irq;
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bus->isa_cards[idx].available = 1;
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break;
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}
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}
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}
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/*
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* We'd like like to allow the irq, maddr, and iobase addresses to be
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* wildcarded. So, we probe all the cards the first time lemac_isa_probe()
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* is called. On subsequent calls we look for matching cards.
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*/
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static int
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lemac_isa_probe(
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struct device *parent,
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#ifdef __BROKEN_INDIRECT_CONFIG
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void *match,
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#else
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struct cfdata *match,
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#endif
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void *aux)
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{
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struct isa_attach_args * const ia = aux;
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struct lemac_isabus *bus;
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int idx;
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if (lemac_isa_buses_inited == 0) {
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LIST_INIT(&lemac_isa_buses);
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lemac_isa_buses_inited = 1;
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}
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/*
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* Probe this bus if we haven't done so already.
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*/
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for (bus = lemac_isa_buses.lh_first; bus != NULL;
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bus = bus->isa_link.le_next) {
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if (bus->isa_bus == parent)
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break;
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}
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if (bus == NULL) {
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bus_addr_t iobase;
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/*
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* Mark this bus so we don't probe it again.
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*/
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bus = (struct lemac_isabus *)
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malloc(sizeof(struct lemac_isabus), M_DEVBUF, M_NOWAIT);
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if (bus == NULL)
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panic("lemac_isa_probe: can't allocate state storage for %s",
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parent->dv_xname);
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bus->isa_bus = parent;
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LIST_INSERT_HEAD(&lemac_isa_buses, bus, isa_link);
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for (iobase = LEMAC_IOBASE_LOW; iobase < LEMAC_IOBASE_HIGH;
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iobase += LEMAC_IOSIZE) {
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bus_space_handle_t ioh;
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/*
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* Map the LEMACs port-space for the probe sequence.
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*/
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if (bus_space_map(ia->ia_iot, iobase, LEMAC_IOSIZE, 0, &ioh))
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continue;
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/*
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* Read the Ethernet address from the EEPROM.
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* It must start with on the DEC OUIs and pass the
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* DEC ethernet checksum test.
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*/
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if (lemac_port_check(ia->ia_iot, ioh)) {
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int irq;
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bus_addr_t maddr;
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bus_addr_t msize;
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bus_space_handle_t memh;
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lemac_info_get(ia->ia_iot, ioh, &maddr, &msize, &irq);
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if (!bus_space_map(ia->ia_memt, maddr, msize, 0, &memh)) {
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lemac_isa_card_add(bus, iobase, maddr, msize, irq);
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bus_space_unmap(ia->ia_memt, memh, msize);
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}
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}
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bus_space_unmap(ia->ia_iot, ioh, LEMAC_IOSIZE);
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}
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}
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for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) {
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if (bus->isa_cards[idx].available != 1)
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continue;
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if (ia->ia_iobase != IOBASEUNK
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&& ia->ia_iobase != bus->isa_cards[idx].iobase)
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continue;
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if (ia->ia_maddr != MADDRUNK
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&& ia->ia_maddr != bus->isa_cards[idx].maddr)
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continue;
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if (ia->ia_irq != IRQUNK && ia->ia_irq != bus->isa_cards[idx].irq)
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continue;
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break;
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}
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if (idx == MAXCARDS_PER_ISABUS)
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return 0;
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bus->isa_cards[idx].available++;
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ia->ia_iobase = bus->isa_cards[idx].iobase;
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ia->ia_irq = bus->isa_cards[idx].irq;
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ia->ia_iosize = LEMAC_IOSIZE;
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ia->ia_maddr = bus->isa_cards[idx].maddr;
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ia->ia_msize = bus->isa_cards[idx].msize;
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return 1;
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}
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static void
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lemac_isa_attach(
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struct device *parent,
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struct device *self,
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void *aux)
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{
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lemac_softc_t *sc = (void *)self;
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struct isa_attach_args *ia = aux;
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/* Map i/o space. */
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sc->sc_iot = ia->ia_iot;
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if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, &sc->sc_ioh))
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panic("\n%s: can't map i/o space 0x%x-0x%x\n",
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sc->sc_dv.dv_xname,
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ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1);
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if (ia->ia_msize && ia->ia_maddr) {
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sc->sc_memt = ia->ia_memt;
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/* Map memory space. */
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if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 0, &sc->sc_memh))
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panic("\n%s: can't map iomem space 0x%x-0x%x\n",
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sc->sc_dv.dv_xname,
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ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1);
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}
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sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
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if (sc->sc_ats == NULL)
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printf("\n%s: warning: couldn't establish shutdown hook\n",
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sc->sc_dv.dv_xname);
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lemac_ifattach(sc);
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sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_NET, lemac_intr, sc);
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}
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struct cfattach lc_isa_ca = {
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sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach
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};
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