409 lines
11 KiB
C
409 lines
11 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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 <isa/isavar.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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#ifdef __i386__
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#include <i386/isa/elink.h>
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#endif
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#ifdef __i386__
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static uint16_t get_eeprom_data(int, int);
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static void ep_isa_identify(driver_t *, device_t);
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#endif
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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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static int ep_eeprom_cksum(struct ep_softc *);
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struct isa_ident {
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uint32_t id;
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char *name;
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};
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const char *ep_isa_match_id(uint32_t, struct isa_ident *);
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#define ISA_ID_3C509_XXX 0x0506d509
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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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#define ISA_ID_3C509_TPC 0x506d5098
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#ifdef PC98
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#define ISA_ID_3C569B_COMBO 0x506d5694
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#define ISA_ID_3C569B_TPO 0x506d5695
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#endif
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#ifdef __i386__
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static struct isa_ident ep_isa_devs[] = {
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{ISA_ID_3C509_TP, "3Com 3C509-TP EtherLink III"},
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{ISA_ID_3C509_BNC, "3Com 3C509-BNC EtherLink III"},
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{ISA_ID_3C509_COMBO, "3Com 3C509-Combo EtherLink III"},
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{ISA_ID_3C509_TPO, "3Com 3C509-TPO EtherLink III"},
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{ISA_ID_3C509_TPC, "3Com 3C509-TPC EtherLink III"},
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#ifdef PC98
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{ISA_ID_3C569B_COMBO, "3Com 3C569B-J-Combo EtherLink III"},
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{ISA_ID_3C569B_TPO, "3Com 3C569B-J-TPO EtherLink III"},
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#endif
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{0, NULL},
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};
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#endif
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static struct isa_pnp_id ep_ids[] = {
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{0x90506d50, "3Com 3C509B-TP EtherLink III (PnP)"}, /* TCM5090 */
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{0x91506d50, "3Com 3C509B-BNC EtherLink III (PnP)"}, /* TCM5091 */
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{0x94506d50, "3Com 3C509B-Combo EtherLink III (PnP)"}, /* TCM5094 */
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{0x95506d50, "3Com 3C509B-TPO EtherLink III (PnP)"}, /* TCM5095 */
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{0x98506d50, "3Com 3C509B-TPC EtherLink III (PnP)"}, /* TCM5098 */
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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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#ifdef __i386__
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static uint16_t
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get_eeprom_data(int id_port, int offset)
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{
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int i;
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uint16_t data = 0;
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outb(id_port, EEPROM_CMD_RD | offset);
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DELAY(BIT_DELAY_MULTIPLE * 1000);
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for (i = 0; i < 16; i++) {
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DELAY(50);
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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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#endif
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const char *
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ep_isa_match_id(uint32_t id, 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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/*
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* If we see a card that is likely to be a 3c509
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* return something so that it will work; be annoying
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* so that the user will tell us about it though.
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*/
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if ((id >> 4) == ISA_ID_3C509_XXX)
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return ("Unknown 3c509; notify maintainer!");
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return (NULL);
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}
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#ifdef __i386__
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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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uint16_t data;
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uint32_t irq;
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uint32_t ioport;
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uint32_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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/*
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* For the first probe, clear all board's tag registers.
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* Otherwise kill off already-found 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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/* 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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/* 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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* 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,
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"unknown ID 0x%08x\n", isa_id);
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continue;
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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 & ADDR_CFG_MASK) * 0x100) + 0x40d0);
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#else
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ioport = (((data & ADDR_CFG_MASK) << 4) + 0x200);
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#endif
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if ((data & ADDR_CFG_MASK) == ADDR_CFG_EISA) {
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device_printf(parent,
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"<%s> at port 0x%03x in EISA mode!\n",
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desc, ioport);
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/*
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* Set the adaptor tag so that the next card can be
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* found.
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*/
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outb(ELINK_ID_PORT, tag--);
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continue;
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}
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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,
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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,
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"<%s> at 0x%03x "
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"in PnP mode!\n",
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desc, ioport);
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/*
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* Set the adaptor tag so that the next card
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* can be found.
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*/
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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,
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"<%s> at port 0x%03x in TEST mode!"
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" Erase pencil mark.\n",
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desc, 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,
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"<%s>"
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" at port 0x%03x-0x%03x irq %d\n",
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desc, ioport, ioport + EP_IOSIZE, irq);
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found++;
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}
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}
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#endif
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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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/* 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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/* 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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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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goto bad;
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ep_get_media(sc);
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GO_WINDOW(sc, 0);
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SET_IRQ(sc, rman_get_start(sc->irq));
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if ((error = ep_attach(sc)))
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goto bad;
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error = ep_eeprom_cksum(sc);
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if (error) {
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device_printf(sc->dev, "Invalid EEPROM checksum!\n");
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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 | INTR_MPSAFE,
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NULL, ep_intr, 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 int
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ep_eeprom_cksum(struct ep_softc *sc)
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{
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int i;
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int error;
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uint16_t val;
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uint16_t cksum;
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uint8_t cksum_high = 0;
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uint8_t cksum_low = 0;
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error = ep_get_e(sc, 0x0f, &val);
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if (error)
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return (ENXIO);
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cksum = val;
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for (i = 0; i < 0x0f; i++) {
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error = ep_get_e(sc, i, &val);
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if (error)
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return (ENXIO);
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switch (i) {
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case 0x08:
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case 0x09:
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case 0x0d:
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cksum_low ^= (uint8_t) (val & 0x00ff) ^
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(uint8_t)((val & 0xff00) >> 8);
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break;
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default:
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cksum_high ^= (uint8_t) (val & 0x00ff) ^
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(uint8_t)((val & 0xff00) >> 8);
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break;
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}
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}
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return (cksum != ((uint16_t)cksum_low | (uint16_t)(cksum_high << 8)));
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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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#ifdef __i386__
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DEVMETHOD(device_identify, ep_isa_identify),
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#endif
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DEVMETHOD(device_probe, ep_isa_probe),
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DEVMETHOD(device_attach, ep_isa_attach),
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DEVMETHOD(device_detach, ep_detach),
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DEVMETHOD_END
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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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#ifdef __i386__
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MODULE_DEPEND(ep, elink, 1, 1, 1);
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#endif
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