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Add the ISA inteface for the lc (LEMAC, EtherWORKS III) driver.

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This commit is contained in:
matt 1997-07-31 21:58:19 +00:00
parent 16b1eea874
commit aef82b4aed
2 changed files with 278 additions and 1 deletions
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6
sys/dev/isa/files.isa
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@ -1,4 +1,4 @@
# $NetBSD: files.isa,v 1.33 1997/07/20 20:30:46 pk Exp $
# $NetBSD: files.isa,v 1.34 1997/07/31 21:58:20 matt Exp $
#
# Config file and device description for machine-independent ISA code.
# Included by ports that need it. Requires that the SCSI files be
@ -193,6 +193,10 @@ file dev/isa/if_iy.c iy
attach le at isa with le_isa: isadma
file dev/isa/if_le_isa.c le_isa
# DEC EtherWORKS III (LEMAC-based: DE203, DE204, DE205) cards
attach lc at isa with lc_isa
file dev/isa/if_lc_isa.c lc
#
# ISA Sound hardware
#

273
sys/dev/isa/if_lc_isa.c Normal file
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@ -0,0 +1,273 @@
/* $NetBSD: if_lc_isa.c,v 1.1 1997/07/31 21:58:19 matt Exp $ */
/*-
* Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
* 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, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* DEC EtherWORKS 3 Ethernet Controllers
*
* Written by Matt Thomas
*
* This driver supports the LEMAC (DE203, DE204, and DE205) cards.
*/
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/ic/lemacreg.h>
#include <dev/ic/lemacvar.h>
#include <dev/isa/isavar.h>
/*
* This keeps track of which ISAs have been through a lc probe sequence.
* A simple static variable isn't enough, since it's conceivable that
* a system might have more than one ISA bus.
*
* The "isa_bus" member is a pointer to the parent ISA bus device struct
* which will unique per ISA bus.
*/
#define MAXCARDS_PER_ISABUS 4 /* if you have more than 4, you lose */
#define MAXSLOTS_PER_BUS 16 /* 0x200-0x3FF in 0x20 incr. */
struct lemac_isabus {
LIST_ENTRY(lemac_isabus) isa_link;
struct device *isa_bus;
struct lemac_card {
bus_addr_t iobase;
bus_addr_t maddr;
bus_size_t msize;
int irq;
int available;
} isa_cards[MAXCARDS_PER_ISABUS];
};
static LIST_HEAD(, lemac_isabus) lemac_isa_buses;
static int lemac_isa_buses_inited;
static void
lemac_isa_card_add(
struct lemac_isabus *bus,
bus_addr_t iobase,
bus_addr_t maddr,
bus_size_t msize,
int irq)
{
int idx;
for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) {
if (bus->isa_cards[idx].available == 0) {
bus->isa_cards[idx].iobase = iobase;
bus->isa_cards[idx].maddr = maddr;
bus->isa_cards[idx].msize = msize;
bus->isa_cards[idx].irq = irq;
bus->isa_cards[idx].available = 1;
break;
}
}
}
/*
* We'd like like to allow the irq, maddr, and iobase addresses to be
* wildcarded. So, we probe all the cards the first time lemac_isa_probe()
* is called. On subsequent calls we look for matching cards.
*/
static int
lemac_isa_probe(
struct device *parent,
#ifdef __BROKEN_INDIRECT_CONFIG
void *match,
#else
struct cfdata *match,
#endif
void *aux)
{
struct isa_attach_args * const ia = aux;
struct lemac_isabus *bus;
int idx;
if (lemac_isa_buses_inited == 0) {
LIST_INIT(&lemac_isa_buses);
lemac_isa_buses_inited = 1;
}
/*
* Probe this bus if we haven't done so already.
*/
for (bus = lemac_isa_buses.lh_first; bus != NULL;
bus = bus->isa_link.le_next) {
if (bus->isa_bus == parent)
break;
}
if (bus == NULL) {
bus_addr_t iobase;
/*
* Mark this bus so we don't probe it again.
*/
bus = (struct lemac_isabus *)
malloc(sizeof(struct lemac_isabus), M_DEVBUF, M_NOWAIT);
if (bus == NULL)
panic("lemac_isa_probe: can't allocate state storage for %s",
parent->dv_xname);
bus->isa_bus = parent;
LIST_INSERT_HEAD(&lemac_isa_buses, bus, isa_link);
for (iobase = LEMAC_IOBASE_LOW; iobase < LEMAC_IOBASE_HIGH;
iobase += LEMAC_IOSIZE) {
bus_space_handle_t ioh;
/*
* Map the LEMACs port-space for the probe sequence.
*/
if (bus_space_map(ia->ia_iot, iobase, LEMAC_IOSIZE, 0, &ioh))
continue;
/*
* Read the Ethernet address from the EEPROM.
* It must start with on the DEC OUIs and pass the
* DEC ethernet checksum test.
*/
if (lemac_port_check(ia->ia_iot, ioh)) {
int irq;
bus_addr_t maddr;
bus_addr_t msize;
bus_space_handle_t memh;
lemac_info_get(ia->ia_iot, ioh, &maddr, &msize, &irq);
if (!bus_space_map(ia->ia_memt, maddr, msize, 0, &memh)) {
lemac_isa_card_add(bus, iobase, maddr, msize, irq);
bus_space_unmap(ia->ia_memt, memh, msize);
}
}
bus_space_unmap(ia->ia_iot, ioh, LEMAC_IOSIZE);
}
}
for (idx = 0; idx < MAXCARDS_PER_ISABUS; idx++) {
if (bus->isa_cards[idx].available != 1)
continue;
if (ia->ia_iobase != IOBASEUNK
&& ia->ia_iobase != bus->isa_cards[idx].iobase)
continue;
if (ia->ia_maddr != MADDRUNK
&& ia->ia_maddr != bus->isa_cards[idx].maddr)
continue;
if (ia->ia_irq != IRQUNK && ia->ia_irq != bus->isa_cards[idx].irq)
continue;
break;
}
if (idx == MAXCARDS_PER_ISABUS)
return 0;
bus->isa_cards[idx].available++;
ia->ia_iobase = bus->isa_cards[idx].iobase;
ia->ia_irq = bus->isa_cards[idx].irq;
ia->ia_iosize = LEMAC_IOSIZE;
ia->ia_maddr = bus->isa_cards[idx].maddr;
ia->ia_msize = bus->isa_cards[idx].msize;
return 1;
}
static void
lemac_isa_attach(
struct device *parent,
struct device *self,
void *aux)
{
lemac_softc_t *sc = (void *)self;
struct isa_attach_args *ia = aux;
/* Map i/o space. */
sc->sc_iot = ia->ia_iot;
if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, &sc->sc_ioh))
panic("\n%s: can't map i/o space 0x%x-0x%x\n",
sc->sc_dv.dv_xname,
ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1);
if (ia->ia_msize && ia->ia_maddr) {
sc->sc_memt = ia->ia_memt;
/* Map memory space. */
if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 0, &sc->sc_memh))
panic("\n%s: can't map iomem space 0x%x-0x%x\n",
sc->sc_dv.dv_xname,
ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1);
}
sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
if (sc->sc_ats == NULL)
printf("\n%s: warning: couldn't establish shutdown hook\n",
sc->sc_dv.dv_xname);
lemac_ifattach(sc);
sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
IPL_NET, lemac_intr, sc);
}
struct cfattach lc_isa_ca = {
sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach
};