if_ep_isa.c revision 54198
151673Smdodd/* 251673Smdodd * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> 351673Smdodd * All rights reserved. 451673Smdodd * 551673Smdodd * Redistribution and use in source and binary forms, with or without 651673Smdodd * modification, are permitted provided that the following conditions 751673Smdodd * are met: 851673Smdodd * 1. Redistributions of source code must retain the above copyright 951673Smdodd * notice, this list of conditions and the following disclaimer. 1051673Smdodd * 2. Redistributions in binary form must reproduce the above copyright 1151673Smdodd * notice, this list of conditions and the following disclaimer in the 1251673Smdodd * documentation and/or other materials provided with the distribution. 1351673Smdodd * 3. All advertising materials mentioning features or use of this software 1451673Smdodd * must display the following acknowledgement: 1551673Smdodd * This product includes software developed by Herb Peyerl. 1651673Smdodd * 4. The name of Herb Peyerl may not be used to endorse or promote products 1751673Smdodd * derived from this software without specific prior written permission. 1851673Smdodd * 1951673Smdodd * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 2051673Smdodd * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 2151673Smdodd * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 2251673Smdodd * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2351673Smdodd * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2451673Smdodd * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2551673Smdodd * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2651673Smdodd * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2751673Smdodd * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2851673Smdodd * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2951673Smdodd * 3051673Smdodd * $FreeBSD: head/sys/dev/ep/if_ep_isa.c 54198 1999-12-06 08:59:52Z mdodd $ 3151673Smdodd */ 3251673Smdodd 3351673Smdodd#include <sys/param.h> 3452549Smdodd#include <sys/systm.h> 3551673Smdodd#include <sys/kernel.h> 3651673Smdodd#include <sys/socket.h> 3751673Smdodd 3852549Smdodd#include <sys/module.h> 3952549Smdodd#include <sys/bus.h> 4052549Smdodd 4152549Smdodd#include <machine/bus.h> 4252549Smdodd#include <machine/resource.h> 4352549Smdodd#include <sys/rman.h> 4452549Smdodd 4551673Smdodd#include <net/if.h> 4652549Smdodd#include <net/if_arp.h> 4752549Smdodd#include <net/if_media.h> 4851673Smdodd 4951673Smdodd#include <machine/clock.h> 5051673Smdodd 5152549Smdodd#include <isa/isavar.h> 5252549Smdodd#include <isa/pnpvar.h> 5351673Smdodd 5451673Smdodd#include <dev/ep/if_epreg.h> 5551673Smdodd#include <dev/ep/if_epvar.h> 5651673Smdodd#include <i386/isa/elink.h> 5751673Smdodd 5852549Smdoddstatic int get_eeprom_data (int, int); 5951673Smdodd 6052549Smdoddstatic void ep_isa_identify (driver_t *, device_t); 6152549Smdoddstatic int ep_isa_probe (device_t); 6252549Smdoddstatic int ep_isa_attach (device_t); 6351673Smdodd 6452549Smdoddstruct isa_ident { 6552549Smdodd u_int32_t id; 6652549Smdodd char * name; 6751673Smdodd}; 6852549Smdoddconst char * ep_isa_match_id (u_int32_t, struct isa_ident *); 6951673Smdodd 7052549Smdodd#define ISA_ID_3C509_TP 0x506d5090 7152549Smdodd#define ISA_ID_3C509_BNC 0x506d5091 7252549Smdodd#define ISA_ID_3C509_COMBO 0x506d5094 7352549Smdodd#define ISA_ID_3C509_TPO 0x506d5095 7451673Smdodd 7552549Smdoddstatic struct isa_ident ep_isa_devs[] = { 7654197Smdodd { ISA_ID_3C509_TP, "3Com 3C509-TP EtherLink III" }, 7754197Smdodd { ISA_ID_3C509_BNC, "3Com 3C509-BNC EtherLink III" }, 7854197Smdodd { ISA_ID_3C509_COMBO, "3Com 3C509-Combo EtherLink III" }, 7954197Smdodd { ISA_ID_3C509_TPO, "3Com 3C509-TPO EtherLink III" }, 8052549Smdodd { 0, NULL }, 8152549Smdodd}; 8251673Smdodd 8352549Smdoddstatic struct isa_pnp_id ep_ids[] = { 8454197Smdodd { 0x90506d50, "3Com 3C509B-TP EtherLink III (PnP)" }, /* TCM5090 */ 8554197Smdodd { 0x91506d50, "3Com 3C509B-BNC EtherLink III (PnP)" },/* TCM5091 */ 8654197Smdodd { 0x94506d50, "3Com 3C509B-Combo EtherLink III (PnP)" },/* TCM5094 */ 8754197Smdodd { 0x95506d50, "3Com 3C509B-TPO EtherLink III (PnP)" },/* TCM5095 */ 8854197Smdodd { 0xf780d041, NULL }, /* PNP80f7 */ 8954197Smdodd { 0, NULL }, 9052549Smdodd}; 9151673Smdodd 9252549Smdodd/* 9352549Smdodd * We get eeprom data from the id_port given an offset into the eeprom. 9452549Smdodd * Basically; after the ID_sequence is sent to all of the cards; they enter 9552549Smdodd * the ID_CMD state where they will accept command requests. 0x80-0xbf loads 9652549Smdodd * the eeprom data. We then read the port 16 times and with every read; the 9752549Smdodd * cards check for contention (ie: if one card writes a 0 bit and another 9852549Smdodd * writes a 1 bit then the host sees a 0. At the end of the cycle; each card 9952549Smdodd * compares the data on the bus; if there is a difference then that card goes 10052549Smdodd * into ID_WAIT state again). In the meantime; one bit of data is returned in 10152549Smdodd * the AX register which is conveniently returned to us by inb(). Hence; we 10252549Smdodd * read 16 times getting one bit of data with each read. 10352549Smdodd */ 10451673Smdodd 10554198Smdoddstatic u_int16_t 10652549Smdoddget_eeprom_data(id_port, offset) 10754198Smdodd int id_port; 10854198Smdodd int offset; 10952549Smdodd{ 11054198Smdodd int i; 11154198Smdodd u_int16_t data = 0; 11254198Smdodd 11354198Smdodd outb(id_port, EEPROM_CMD_RD|offset); 11452549Smdodd DELAY(BIT_DELAY_MULTIPLE * 1000); 11554198Smdodd for (i = 0; i < 16; i++) { 11654198Smdodd DELAY(50); 11754198Smdodd data = (data << 1) | (inw(id_port) & 1); 11854198Smdodd } 11954198Smdodd return (data); 12052549Smdodd} 12151673Smdodd 12252549Smdoddconst char * 12352549Smdoddep_isa_match_id (id, isa_devs) 12452549Smdodd u_int32_t id; 12552549Smdodd struct isa_ident * isa_devs; 12652549Smdodd{ 12752549Smdodd struct isa_ident * i = isa_devs; 12852549Smdodd while(i->name != NULL) { 12952549Smdodd if (id == i->id) 13052549Smdodd return (i->name); 13152549Smdodd i++; 13252549Smdodd } 13352549Smdodd return (NULL); 13452549Smdodd} 13551673Smdodd 13652549Smdoddstatic void 13752549Smdoddep_isa_identify (driver_t *driver, device_t parent) 13852549Smdodd{ 13952549Smdodd int tag = EP_LAST_TAG; 14052549Smdodd int found = 0; 14152549Smdodd int i; 14252549Smdodd int j; 14352549Smdodd const char * desc; 14454196Smdodd u_int16_t data; 14552549Smdodd u_int32_t irq; 14652549Smdodd u_int32_t ioport; 14752549Smdodd u_int32_t isa_id; 14852549Smdodd device_t child; 14951673Smdodd 15052549Smdodd outb(ELINK_ID_PORT, 0); 15152549Smdodd outb(ELINK_ID_PORT, 0); 15252549Smdodd elink_idseq(ELINK_509_POLY); 15352549Smdodd elink_reset(); 15451673Smdodd 15552549Smdodd DELAY(DELAY_MULTIPLE * 10000); 15651673Smdodd 15752549Smdodd for (i = 0; i < EP_MAX_BOARDS; i++) { 15851673Smdodd 15952549Smdodd outb(ELINK_ID_PORT, 0); 16052549Smdodd outb(ELINK_ID_PORT, 0); 16154196Smdodd elink_idseq(ELINK_509_POLY); 16254196Smdodd DELAY(400); 16351673Smdodd 16452549Smdodd /* For the first probe, clear all 16552549Smdodd * board's tag registers. 16652549Smdodd * Otherwise kill off already-found 16752549Smdodd * boards. -- linux 3c509.c 16852549Smdodd */ 16952549Smdodd if (i == 0) { 17052549Smdodd outb(ELINK_ID_PORT, 0xd0); 17152549Smdodd } else { 17252549Smdodd outb(ELINK_ID_PORT, 0xd8); 17352549Smdodd } 17451673Smdodd 17554196Smdodd /* Get out of loop if we're out of cards. */ 17654196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 17754196Smdodd if (data != MFG_ID) { 17854196Smdodd break; 17954196Smdodd } 18054196Smdodd 18154196Smdodd /* resolve contention using the Ethernet address */ 18254196Smdodd for (j = 0; j < 3; j++) { 18354196Smdodd (void)get_eeprom_data(ELINK_ID_PORT, j); 18454196Smdodd } 18554196Smdodd 18652549Smdodd /* 18752549Smdodd * Construct an 'isa_id' in 'EISA' 18852549Smdodd * format. 18952549Smdodd */ 19052549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 19152549Smdodd isa_id = (htons(data) << 16); 19252549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID); 19352549Smdodd isa_id |= htons(data); 19451673Smdodd 19552549Smdodd /* Find known ISA boards */ 19652549Smdodd desc = ep_isa_match_id(isa_id, ep_isa_devs); 19752549Smdodd if (!desc) { 19852549Smdodd if (bootverbose) { 19952549Smdodd device_printf(parent, "if_ep: unknown ID 0x%08x\n", 20052549Smdodd isa_id); 20152549Smdodd } 20252549Smdodd break; 20352549Smdodd } 20451673Smdodd 20552549Smdodd /* Retreive IRQ */ 20652549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG); 20752549Smdodd irq = (data >> 12); 20851673Smdodd 20952549Smdodd /* Retreive IOPORT */ 21052549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG); 21152549Smdodd#ifdef PC98 21254196Smdodd ioport = (((data & 0x1f) * 0x100) + 0x40d0); 21352549Smdodd#else 21454196Smdodd ioport = (((data & 0x1f) << 4) + 0x200); 21552549Smdodd#endif 21651673Smdodd 21754196Smdodd /* Test for an adapter with PnP support. */ 21854196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP); 21954196Smdodd if (data == CAP_ISA) { 22054196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1); 22154196Smdodd if (data & ICW1_IAS_PNP) { 22254196Smdodd if (bootverbose) { 22354196Smdodd device_printf(parent, "if_ep: Adapter at 0x%03x in PnP mode!\n", 22454196Smdodd ioport); 22554196Smdodd } 22654196Smdodd /* Set the adaptor tag so that the next card can be found. */ 22754196Smdodd outb(ELINK_ID_PORT, tag--); 22854196Smdodd continue; 22954196Smdodd } 23054196Smdodd } 23154196Smdodd 23252549Smdodd /* Set the adaptor tag so that the next card can be found. */ 23352549Smdodd outb(ELINK_ID_PORT, tag--); 23451673Smdodd 23552549Smdodd /* Activate the adaptor at the EEPROM location. */ 23654196Smdodd outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG); 23751673Smdodd 23854196Smdodd /* Test for an adapter in TEST mode. */ 23954196Smdodd outw(ioport + EP_COMMAND, WINDOW_SELECT | 0); 24052549Smdodd data = inw(ioport + EP_W0_EEPROM_COMMAND); 24152549Smdodd if (data & EEPROM_TST_MODE) { 24254196Smdodd device_printf(parent, "if_ep: Adapter at 0x%03x in TEST mode! Erase pencil mark.\n", 24354196Smdodd ioport); 24452549Smdodd continue; 24552549Smdodd } 24651673Smdodd 24752549Smdodd child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1); 24852549Smdodd device_set_desc_copy(child, desc); 24952549Smdodd device_set_driver(child, driver); 25052549Smdodd bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); 25152549Smdodd bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE); 25251673Smdodd 25352549Smdodd if (bootverbose) { 25452549Smdodd device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n", 25552549Smdodd desc, ioport, ioport + EP_IOSIZE, irq); 25652549Smdodd } 25751673Smdodd 25852549Smdodd found++; 25952549Smdodd } 26051673Smdodd 26152549Smdodd return; 26252549Smdodd} 26351673Smdodd 26452549Smdoddstatic int 26552549Smdoddep_isa_probe (device_t dev) 26652549Smdodd{ 26752549Smdodd int error = 0; 26851673Smdodd 26952549Smdodd /* Check isapnp ids */ 27052549Smdodd error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids); 27151673Smdodd 27252549Smdodd /* If the card had a PnP ID that didn't match any we know about */ 27352549Smdodd if (error == ENXIO) { 27452549Smdodd return (error); 27552549Smdodd } 27651673Smdodd 27752549Smdodd /* If we had some other problem. */ 27852549Smdodd if (!(error == 0 || error == ENOENT)) { 27952549Smdodd return (error); 28052549Smdodd } 28151673Smdodd 28252549Smdodd /* If we have the resources we need then we're good to go. */ 28352549Smdodd if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) && 28452549Smdodd (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) { 28552549Smdodd return (0); 28652549Smdodd } 28751673Smdodd 28852549Smdodd return (ENXIO); 28952549Smdodd} 29051673Smdodd 29152549Smdoddstatic int 29252549Smdoddep_isa_attach (device_t dev) 29352549Smdodd{ 29452549Smdodd struct ep_softc * sc = device_get_softc(dev); 29552549Smdodd int error = 0; 29651673Smdodd 29752549Smdodd if ((error = ep_alloc(dev))) { 29852549Smdodd device_printf(dev, "ep_alloc() failed! (%d)\n", error); 29952549Smdodd goto bad; 30052549Smdodd } 30151673Smdodd 30252549Smdodd ep_get_media(sc); 30351673Smdodd 30452549Smdodd GO_WINDOW(0); 30552549Smdodd SET_IRQ(BASE, rman_get_start(sc->irq)); 30651673Smdodd 30752549Smdodd if ((error = ep_attach(sc))) { 30852549Smdodd device_printf(dev, "ep_attach() failed! (%d)\n", error); 30952549Smdodd goto bad; 31052549Smdodd } 31151673Smdodd 31252549Smdodd if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr, 31352549Smdodd sc, &sc->ep_intrhand))) { 31452549Smdodd device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); 31552549Smdodd goto bad; 31652549Smdodd } 31751673Smdodd 31852549Smdodd return (0); 31952549Smdoddbad: 32052549Smdodd ep_free(dev); 32152549Smdodd return (error); 32251673Smdodd} 32351673Smdodd 32452549Smdoddstatic device_method_t ep_isa_methods[] = { 32552549Smdodd /* Device interface */ 32652549Smdodd DEVMETHOD(device_identify, ep_isa_identify), 32752549Smdodd DEVMETHOD(device_probe, ep_isa_probe), 32852549Smdodd DEVMETHOD(device_attach, ep_isa_attach), 32951673Smdodd 33052549Smdodd { 0, 0 } 33152549Smdodd}; 33251673Smdodd 33352549Smdoddstatic driver_t ep_isa_driver = { 33452549Smdodd "ep", 33552549Smdodd ep_isa_methods, 33652549Smdodd sizeof(struct ep_softc), 33752549Smdodd}; 33851673Smdodd 33952549Smdoddextern devclass_t ep_devclass; 34051673Smdodd 34152549SmdoddDRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0); 342