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94d49d9a35
We now correctly skip boards that have PnP support enabled, or are in test mode. The 3c509s support a number of combinations of device probing, as per the databook. - ISA only - PnP only - ISA or PnP We will allow cards that can be dealt with by PnP to be attached by the PnP enumerator. This fixes the bogus detection of boards at weird ioports.
339 lines
8.9 KiB
C
339 lines
8.9 KiB
C
/*
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* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
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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. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Herb Peyerl.
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* 4. The name of Herb Peyerl 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 ``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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/module.h>
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#include <sys/bus.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 <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_media.h>
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#include <machine/clock.h>
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#include <isa/isavar.h>
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#include <isa/pnpvar.h>
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#include <dev/ep/if_epreg.h>
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#include <dev/ep/if_epvar.h>
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#include <i386/isa/elink.h>
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static int get_eeprom_data (int, int);
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static void ep_isa_identify (driver_t *, device_t);
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static int ep_isa_probe (device_t);
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static int ep_isa_attach (device_t);
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struct isa_ident {
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u_int32_t id;
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char * name;
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};
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const char * ep_isa_match_id (u_int32_t, struct isa_ident *);
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#define ISA_ID_3C509_TP 0x506d5090
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#define ISA_ID_3C509_BNC 0x506d5091
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#define ISA_ID_3C509_COMBO 0x506d5094
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#define ISA_ID_3C509_TPO 0x506d5095
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static struct isa_ident ep_isa_devs[] = {
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{ ISA_ID_3C509_TP, "3Com EtherLink III (3c509-TP)" },
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{ ISA_ID_3C509_BNC, "3Com EtherLink III (3c509-BNC)" },
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{ ISA_ID_3C509_COMBO, "3Com EtherLink III (3c509-Combo)" },
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{ ISA_ID_3C509_TPO, "3Com EtherLink III (3c509-TPO)" },
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{ 0, NULL },
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};
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static struct isa_pnp_id ep_ids[] = {
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{ 0x90506d50, NULL }, /* TCM5090 */
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{ 0x91506d50, NULL }, /* TCM5091 */
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{ 0x94506d50, NULL }, /* TCM5094 */
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{ 0x95506d50, NULL }, /* TCM5095 */
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{ 0xf780d041, NULL }, /* PNP80f7 */
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{ 0, NULL },
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};
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/*
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* We get eeprom data from the id_port given an offset into the eeprom.
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* Basically; after the ID_sequence is sent to all of the cards; they enter
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* the ID_CMD state where they will accept command requests. 0x80-0xbf loads
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* the eeprom data. We then read the port 16 times and with every read; the
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* cards check for contention (ie: if one card writes a 0 bit and another
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* writes a 1 bit then the host sees a 0. At the end of the cycle; each card
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* compares the data on the bus; if there is a difference then that card goes
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* into ID_WAIT state again). In the meantime; one bit of data is returned in
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* the AX register which is conveniently returned to us by inb(). Hence; we
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* read 16 times getting one bit of data with each read.
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*/
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static int
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get_eeprom_data(id_port, offset)
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int id_port;
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int offset;
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{
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int i, data = 0;
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outb(id_port, 0x80 + offset);
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for (i = 0; i < 16; i++) {
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DELAY(BIT_DELAY_MULTIPLE * 1000);
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data = (data << 1) | (inw(id_port) & 1);
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}
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return (data);
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}
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const char *
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ep_isa_match_id (id, isa_devs)
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u_int32_t id;
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struct isa_ident * isa_devs;
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{
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struct isa_ident * i = isa_devs;
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while(i->name != NULL) {
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if (id == i->id)
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return (i->name);
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i++;
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}
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return (NULL);
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}
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static void
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ep_isa_identify (driver_t *driver, device_t parent)
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{
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int tag = EP_LAST_TAG;
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int found = 0;
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int i;
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int j;
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const char * desc;
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u_int16_t data;
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u_int32_t irq;
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u_int32_t ioport;
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u_int32_t isa_id;
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device_t child;
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outb(ELINK_ID_PORT, 0);
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outb(ELINK_ID_PORT, 0);
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elink_idseq(ELINK_509_POLY);
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elink_reset();
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DELAY(DELAY_MULTIPLE * 10000);
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for (i = 0; i < EP_MAX_BOARDS; i++) {
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outb(ELINK_ID_PORT, 0);
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outb(ELINK_ID_PORT, 0);
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elink_idseq(ELINK_509_POLY);
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DELAY(400);
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/* For the first probe, clear all
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* board's tag registers.
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* Otherwise kill off already-found
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* boards. -- linux 3c509.c
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*/
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if (i == 0) {
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outb(ELINK_ID_PORT, 0xd0);
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} else {
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outb(ELINK_ID_PORT, 0xd8);
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}
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/* Get out of loop if we're out of cards. */
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID);
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if (data != MFG_ID) {
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break;
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}
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/* resolve contention using the Ethernet address */
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for (j = 0; j < 3; j++) {
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(void)get_eeprom_data(ELINK_ID_PORT, j);
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}
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/*
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* Construct an 'isa_id' in 'EISA'
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* format.
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*/
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID);
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isa_id = (htons(data) << 16);
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID);
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isa_id |= htons(data);
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/* Find known ISA boards */
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desc = ep_isa_match_id(isa_id, ep_isa_devs);
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if (!desc) {
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if (bootverbose) {
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device_printf(parent, "if_ep: unknown ID 0x%08x\n",
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isa_id);
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}
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break;
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}
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/* Retreive IRQ */
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG);
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irq = (data >> 12);
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/* Retreive IOPORT */
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG);
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#ifdef PC98
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ioport = (((data & 0x1f) * 0x100) + 0x40d0);
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#else
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ioport = (((data & 0x1f) << 4) + 0x200);
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#endif
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/* Test for an adapter with PnP support. */
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP);
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if (data == CAP_ISA) {
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data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1);
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if (data & ICW1_IAS_PNP) {
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if (bootverbose) {
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device_printf(parent, "if_ep: Adapter at 0x%03x in PnP mode!\n",
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ioport);
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}
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/* Set the adaptor tag so that the next card can be found. */
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outb(ELINK_ID_PORT, tag--);
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continue;
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}
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}
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/* Set the adaptor tag so that the next card can be found. */
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outb(ELINK_ID_PORT, tag--);
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/* Activate the adaptor at the EEPROM location. */
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outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG);
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/* Test for an adapter in TEST mode. */
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outw(ioport + EP_COMMAND, WINDOW_SELECT | 0);
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data = inw(ioport + EP_W0_EEPROM_COMMAND);
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if (data & EEPROM_TST_MODE) {
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device_printf(parent, "if_ep: Adapter at 0x%03x in TEST mode! Erase pencil mark.\n",
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ioport);
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continue;
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}
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child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1);
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device_set_desc_copy(child, desc);
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device_set_driver(child, driver);
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bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
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bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE);
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if (bootverbose) {
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device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n",
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desc, ioport, ioport + EP_IOSIZE, irq);
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}
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found++;
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}
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return;
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}
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static int
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ep_isa_probe (device_t dev)
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{
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int error = 0;
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/* Check isapnp ids */
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error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids);
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/* If the card had a PnP ID that didn't match any we know about */
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if (error == ENXIO) {
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return (error);
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}
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/* If we had some other problem. */
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if (!(error == 0 || error == ENOENT)) {
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return (error);
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}
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/* If we have the resources we need then we're good to go. */
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if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) &&
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(bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) {
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return (0);
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}
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return (ENXIO);
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}
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static int
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ep_isa_attach (device_t dev)
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{
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struct ep_softc * sc = device_get_softc(dev);
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int error = 0;
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if ((error = ep_alloc(dev))) {
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device_printf(dev, "ep_alloc() failed! (%d)\n", error);
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goto bad;
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}
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ep_get_media(sc);
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GO_WINDOW(0);
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SET_IRQ(BASE, rman_get_start(sc->irq));
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if ((error = ep_attach(sc))) {
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device_printf(dev, "ep_attach() failed! (%d)\n", error);
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goto bad;
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}
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if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr,
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sc, &sc->ep_intrhand))) {
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device_printf(dev, "bus_setup_intr() failed! (%d)\n", error);
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goto bad;
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}
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return (0);
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bad:
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ep_free(dev);
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return (error);
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}
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static device_method_t ep_isa_methods[] = {
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/* Device interface */
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DEVMETHOD(device_identify, ep_isa_identify),
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DEVMETHOD(device_probe, ep_isa_probe),
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DEVMETHOD(device_attach, ep_isa_attach),
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{ 0, 0 }
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};
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static driver_t ep_isa_driver = {
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"ep",
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ep_isa_methods,
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sizeof(struct ep_softc),
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};
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extern devclass_t ep_devclass;
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DRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0);
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