933d52b173
still relevant (ISA cards can still be in EISA mode, and we're still ignoring those in the identify routine). Notes about cards in EISA mode have been left in the manual since they aren't relevant to EISA support, but instruct how to properly configure an ISA card in a mode when it is in a ISA bus slot.
396 lines
10 KiB
C
396 lines
10 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 __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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{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' 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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ioport = (((data & ADDR_CFG_MASK) << 4) + 0x200);
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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, ignoring!\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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