if_ep_isa.c revision 63379
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 63379 2000-07-18 06:37:08Z 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 5854200Smdoddstatic u_int16_t get_eeprom_data (int, int); 5951673Smdodd 6054200Smdoddstatic void ep_isa_identify (driver_t *, device_t); 6154200Smdoddstatic int ep_isa_probe (device_t); 6254200Smdoddstatic 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 7056428Smdodd#define ISA_ID_3C509_XXX 0x0506d509 7152549Smdodd#define ISA_ID_3C509_TP 0x506d5090 7252549Smdodd#define ISA_ID_3C509_BNC 0x506d5091 7352549Smdodd#define ISA_ID_3C509_COMBO 0x506d5094 7452549Smdodd#define ISA_ID_3C509_TPO 0x506d5095 7556428Smdodd#define ISA_ID_3C509_TPC 0x506d5098 7651673Smdodd 7752549Smdoddstatic struct isa_ident ep_isa_devs[] = { 7854197Smdodd { ISA_ID_3C509_TP, "3Com 3C509-TP EtherLink III" }, 7954197Smdodd { ISA_ID_3C509_BNC, "3Com 3C509-BNC EtherLink III" }, 8054197Smdodd { ISA_ID_3C509_COMBO, "3Com 3C509-Combo EtherLink III" }, 8154197Smdodd { ISA_ID_3C509_TPO, "3Com 3C509-TPO EtherLink III" }, 8256428Smdodd { ISA_ID_3C509_TPC, "3Com 3C509-TPC EtherLink III" }, 8352549Smdodd { 0, NULL }, 8452549Smdodd}; 8551673Smdodd 8652549Smdoddstatic struct isa_pnp_id ep_ids[] = { 8754197Smdodd { 0x90506d50, "3Com 3C509B-TP EtherLink III (PnP)" }, /* TCM5090 */ 8854197Smdodd { 0x91506d50, "3Com 3C509B-BNC EtherLink III (PnP)" },/* TCM5091 */ 8954197Smdodd { 0x94506d50, "3Com 3C509B-Combo EtherLink III (PnP)" },/* TCM5094 */ 9054197Smdodd { 0x95506d50, "3Com 3C509B-TPO EtherLink III (PnP)" },/* TCM5095 */ 9156428Smdodd { 0x98506d50, "3Com 3C509B-TPC EtherLink III (PnP)" },/* TCM5098 */ 9254197Smdodd { 0xf780d041, NULL }, /* PNP80f7 */ 9354197Smdodd { 0, NULL }, 9452549Smdodd}; 9551673Smdodd 9652549Smdodd/* 9752549Smdodd * We get eeprom data from the id_port given an offset into the eeprom. 9852549Smdodd * Basically; after the ID_sequence is sent to all of the cards; they enter 9952549Smdodd * the ID_CMD state where they will accept command requests. 0x80-0xbf loads 10052549Smdodd * the eeprom data. We then read the port 16 times and with every read; the 10152549Smdodd * cards check for contention (ie: if one card writes a 0 bit and another 10252549Smdodd * writes a 1 bit then the host sees a 0. At the end of the cycle; each card 10352549Smdodd * compares the data on the bus; if there is a difference then that card goes 10452549Smdodd * into ID_WAIT state again). In the meantime; one bit of data is returned in 10552549Smdodd * the AX register which is conveniently returned to us by inb(). Hence; we 10652549Smdodd * read 16 times getting one bit of data with each read. 10752549Smdodd */ 10851673Smdodd 10954198Smdoddstatic u_int16_t 11052549Smdoddget_eeprom_data(id_port, offset) 11154198Smdodd int id_port; 11254198Smdodd int offset; 11352549Smdodd{ 11454198Smdodd int i; 11554198Smdodd u_int16_t data = 0; 11654198Smdodd 11754198Smdodd outb(id_port, EEPROM_CMD_RD|offset); 11852549Smdodd DELAY(BIT_DELAY_MULTIPLE * 1000); 11954198Smdodd for (i = 0; i < 16; i++) { 12054198Smdodd DELAY(50); 12154198Smdodd data = (data << 1) | (inw(id_port) & 1); 12254198Smdodd } 12354198Smdodd return (data); 12452549Smdodd} 12551673Smdodd 12652549Smdoddconst char * 12752549Smdoddep_isa_match_id (id, isa_devs) 12852549Smdodd u_int32_t id; 12952549Smdodd struct isa_ident * isa_devs; 13052549Smdodd{ 13152549Smdodd struct isa_ident * i = isa_devs; 13252549Smdodd while(i->name != NULL) { 13352549Smdodd if (id == i->id) 13452549Smdodd return (i->name); 13552549Smdodd i++; 13652549Smdodd } 13756428Smdodd /* 13856428Smdodd * If we see a card that is likely to be a 3c509 13956428Smdodd * return something so that it will work; be annoying 14056428Smdodd * so that the user will tell us about it though. 14156428Smdodd */ 14256429Smdodd if ((id >> 4) == ISA_ID_3C509_XXX) { 14356428Smdodd return ("Unknown 3c509; notify maintainer!"); 14456428Smdodd } 14552549Smdodd return (NULL); 14652549Smdodd} 14751673Smdodd 14852549Smdoddstatic void 14952549Smdoddep_isa_identify (driver_t *driver, device_t parent) 15052549Smdodd{ 15152549Smdodd int tag = EP_LAST_TAG; 15252549Smdodd int found = 0; 15352549Smdodd int i; 15452549Smdodd int j; 15552549Smdodd const char * desc; 15654196Smdodd u_int16_t data; 15752549Smdodd u_int32_t irq; 15852549Smdodd u_int32_t ioport; 15952549Smdodd u_int32_t isa_id; 16052549Smdodd device_t child; 16151673Smdodd 16252549Smdodd outb(ELINK_ID_PORT, 0); 16352549Smdodd outb(ELINK_ID_PORT, 0); 16452549Smdodd elink_idseq(ELINK_509_POLY); 16552549Smdodd elink_reset(); 16651673Smdodd 16752549Smdodd DELAY(DELAY_MULTIPLE * 10000); 16851673Smdodd 16952549Smdodd for (i = 0; i < EP_MAX_BOARDS; i++) { 17051673Smdodd 17152549Smdodd outb(ELINK_ID_PORT, 0); 17252549Smdodd outb(ELINK_ID_PORT, 0); 17354196Smdodd elink_idseq(ELINK_509_POLY); 17454196Smdodd DELAY(400); 17551673Smdodd 17652549Smdodd /* For the first probe, clear all 17752549Smdodd * board's tag registers. 17852549Smdodd * Otherwise kill off already-found 17952549Smdodd * boards. -- linux 3c509.c 18052549Smdodd */ 18152549Smdodd if (i == 0) { 18252549Smdodd outb(ELINK_ID_PORT, 0xd0); 18352549Smdodd } else { 18452549Smdodd outb(ELINK_ID_PORT, 0xd8); 18552549Smdodd } 18651673Smdodd 18754196Smdodd /* Get out of loop if we're out of cards. */ 18854196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 18954196Smdodd if (data != MFG_ID) { 19054196Smdodd break; 19154196Smdodd } 19254196Smdodd 19354196Smdodd /* resolve contention using the Ethernet address */ 19454196Smdodd for (j = 0; j < 3; j++) { 19554196Smdodd (void)get_eeprom_data(ELINK_ID_PORT, j); 19654196Smdodd } 19754196Smdodd 19852549Smdodd /* 19952549Smdodd * Construct an 'isa_id' in 'EISA' 20052549Smdodd * format. 20152549Smdodd */ 20252549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 20352549Smdodd isa_id = (htons(data) << 16); 20452549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID); 20552549Smdodd isa_id |= htons(data); 20651673Smdodd 20752549Smdodd /* Find known ISA boards */ 20852549Smdodd desc = ep_isa_match_id(isa_id, ep_isa_devs); 20952549Smdodd if (!desc) { 21052549Smdodd if (bootverbose) { 21152549Smdodd device_printf(parent, "if_ep: unknown ID 0x%08x\n", 21252549Smdodd isa_id); 21352549Smdodd } 21456429Smdodd continue; 21552549Smdodd } 21651673Smdodd 21752549Smdodd /* Retreive IRQ */ 21852549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG); 21952549Smdodd irq = (data >> 12); 22051673Smdodd 22152549Smdodd /* Retreive IOPORT */ 22252549Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG); 22352549Smdodd#ifdef PC98 22463379Smdodd ioport = (((data & ADDR_CFG_MASK) * 0x100) + 0x40d0); 22552549Smdodd#else 22663379Smdodd ioport = (((data & ADDR_CFG_MASK) << 4) + 0x200); 22752549Smdodd#endif 22851673Smdodd 22963379Smdodd if ((data & ADDR_CFG_MASK) == ADDR_CFG_EISA) { 23063379Smdodd device_printf(parent, "if_ep: <%s> at port 0x%03x in EISA mode!\n", 23163379Smdodd desc, ioport); 23263379Smdodd /* Set the adaptor tag so that the next card can be found. */ 23363379Smdodd outb(ELINK_ID_PORT, tag--); 23463379Smdodd continue; 23563379Smdodd } 23663379Smdodd 23754196Smdodd /* Test for an adapter with PnP support. */ 23854196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP); 23954196Smdodd if (data == CAP_ISA) { 24054196Smdodd data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1); 24154196Smdodd if (data & ICW1_IAS_PNP) { 24254196Smdodd if (bootverbose) { 24356429Smdodd device_printf(parent, "if_ep: <%s> at 0x%03x in PnP mode!\n", 24456429Smdodd desc, ioport); 24554196Smdodd } 24654196Smdodd /* Set the adaptor tag so that the next card can be found. */ 24754196Smdodd outb(ELINK_ID_PORT, tag--); 24854196Smdodd continue; 24954196Smdodd } 25054196Smdodd } 25154196Smdodd 25252549Smdodd /* Set the adaptor tag so that the next card can be found. */ 25352549Smdodd outb(ELINK_ID_PORT, tag--); 25451673Smdodd 25552549Smdodd /* Activate the adaptor at the EEPROM location. */ 25654196Smdodd outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG); 25751673Smdodd 25854196Smdodd /* Test for an adapter in TEST mode. */ 25954196Smdodd outw(ioport + EP_COMMAND, WINDOW_SELECT | 0); 26052549Smdodd data = inw(ioport + EP_W0_EEPROM_COMMAND); 26152549Smdodd if (data & EEPROM_TST_MODE) { 26256429Smdodd device_printf(parent, "if_ep: <%s> at port 0x%03x in TEST mode! Erase pencil mark.\n", 26356429Smdodd desc, ioport); 26452549Smdodd continue; 26552549Smdodd } 26651673Smdodd 26752549Smdodd child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1); 26852549Smdodd device_set_desc_copy(child, desc); 26952549Smdodd device_set_driver(child, driver); 27052549Smdodd bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); 27152549Smdodd bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE); 27251673Smdodd 27352549Smdodd if (bootverbose) { 27452549Smdodd device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n", 27552549Smdodd desc, ioport, ioport + EP_IOSIZE, irq); 27652549Smdodd } 27751673Smdodd 27852549Smdodd found++; 27952549Smdodd } 28051673Smdodd 28152549Smdodd return; 28252549Smdodd} 28351673Smdodd 28452549Smdoddstatic int 28552549Smdoddep_isa_probe (device_t dev) 28652549Smdodd{ 28752549Smdodd int error = 0; 28851673Smdodd 28952549Smdodd /* Check isapnp ids */ 29052549Smdodd error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids); 29151673Smdodd 29252549Smdodd /* If the card had a PnP ID that didn't match any we know about */ 29352549Smdodd if (error == ENXIO) { 29452549Smdodd return (error); 29552549Smdodd } 29651673Smdodd 29752549Smdodd /* If we had some other problem. */ 29852549Smdodd if (!(error == 0 || error == ENOENT)) { 29952549Smdodd return (error); 30052549Smdodd } 30151673Smdodd 30252549Smdodd /* If we have the resources we need then we're good to go. */ 30352549Smdodd if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) && 30452549Smdodd (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) { 30552549Smdodd return (0); 30652549Smdodd } 30751673Smdodd 30852549Smdodd return (ENXIO); 30952549Smdodd} 31051673Smdodd 31152549Smdoddstatic int 31252549Smdoddep_isa_attach (device_t dev) 31352549Smdodd{ 31452549Smdodd struct ep_softc * sc = device_get_softc(dev); 31552549Smdodd int error = 0; 31651673Smdodd 31752549Smdodd if ((error = ep_alloc(dev))) { 31852549Smdodd device_printf(dev, "ep_alloc() failed! (%d)\n", error); 31952549Smdodd goto bad; 32052549Smdodd } 32151673Smdodd 32252549Smdodd ep_get_media(sc); 32351673Smdodd 32452549Smdodd GO_WINDOW(0); 32552549Smdodd SET_IRQ(BASE, rman_get_start(sc->irq)); 32651673Smdodd 32752549Smdodd if ((error = ep_attach(sc))) { 32852549Smdodd device_printf(dev, "ep_attach() failed! (%d)\n", error); 32952549Smdodd goto bad; 33052549Smdodd } 33151673Smdodd 33252549Smdodd if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr, 33352549Smdodd sc, &sc->ep_intrhand))) { 33452549Smdodd device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); 33552549Smdodd goto bad; 33652549Smdodd } 33751673Smdodd 33852549Smdodd return (0); 33952549Smdoddbad: 34052549Smdodd ep_free(dev); 34152549Smdodd return (error); 34251673Smdodd} 34351673Smdodd 34452549Smdoddstatic device_method_t ep_isa_methods[] = { 34552549Smdodd /* Device interface */ 34652549Smdodd DEVMETHOD(device_identify, ep_isa_identify), 34752549Smdodd DEVMETHOD(device_probe, ep_isa_probe), 34852549Smdodd DEVMETHOD(device_attach, ep_isa_attach), 34951673Smdodd 35052549Smdodd { 0, 0 } 35152549Smdodd}; 35251673Smdodd 35352549Smdoddstatic driver_t ep_isa_driver = { 35452549Smdodd "ep", 35552549Smdodd ep_isa_methods, 35652549Smdodd sizeof(struct ep_softc), 35752549Smdodd}; 35851673Smdodd 35952549Smdoddextern devclass_t ep_devclass; 36051673Smdodd 36152549SmdoddDRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0); 362