if_ep_isa.c revision 54196
1/* 2 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Herb Peyerl. 16 * 4. The name of Herb Peyerl may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD: head/sys/dev/ep/if_ep_isa.c 54196 1999-12-06 08:31:47Z mdodd $ 31 */ 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/socket.h> 37 38#include <sys/module.h> 39#include <sys/bus.h> 40 41#include <machine/bus.h> 42#include <machine/resource.h> 43#include <sys/rman.h> 44 45#include <net/if.h> 46#include <net/if_arp.h> 47#include <net/if_media.h> 48 49#include <machine/clock.h> 50 51#include <isa/isavar.h> 52#include <isa/pnpvar.h> 53 54#include <dev/ep/if_epreg.h> 55#include <dev/ep/if_epvar.h> 56#include <i386/isa/elink.h> 57 58static int get_eeprom_data (int, int); 59 60static void ep_isa_identify (driver_t *, device_t); 61static int ep_isa_probe (device_t); 62static int ep_isa_attach (device_t); 63 64struct isa_ident { 65 u_int32_t id; 66 char * name; 67}; 68const char * ep_isa_match_id (u_int32_t, struct isa_ident *); 69 70#define ISA_ID_3C509_TP 0x506d5090 71#define ISA_ID_3C509_BNC 0x506d5091 72#define ISA_ID_3C509_COMBO 0x506d5094 73#define ISA_ID_3C509_TPO 0x506d5095 74 75static struct isa_ident ep_isa_devs[] = { 76 { ISA_ID_3C509_TP, "3Com EtherLink III (3c509-TP)" }, 77 { ISA_ID_3C509_BNC, "3Com EtherLink III (3c509-BNC)" }, 78 { ISA_ID_3C509_COMBO, "3Com EtherLink III (3c509-Combo)" }, 79 { ISA_ID_3C509_TPO, "3Com EtherLink III (3c509-TPO)" }, 80 { 0, NULL }, 81}; 82 83static struct isa_pnp_id ep_ids[] = { 84 { 0x90506d50, NULL }, /* TCM5090 */ 85 { 0x91506d50, NULL }, /* TCM5091 */ 86 { 0x94506d50, NULL }, /* TCM5094 */ 87 { 0x95506d50, NULL }, /* TCM5095 */ 88 { 0xf780d041, NULL }, /* PNP80f7 */ 89 { 0, NULL }, 90}; 91 92/* 93 * We get eeprom data from the id_port given an offset into the eeprom. 94 * Basically; after the ID_sequence is sent to all of the cards; they enter 95 * the ID_CMD state where they will accept command requests. 0x80-0xbf loads 96 * the eeprom data. We then read the port 16 times and with every read; the 97 * cards check for contention (ie: if one card writes a 0 bit and another 98 * writes a 1 bit then the host sees a 0. At the end of the cycle; each card 99 * compares the data on the bus; if there is a difference then that card goes 100 * into ID_WAIT state again). In the meantime; one bit of data is returned in 101 * the AX register which is conveniently returned to us by inb(). Hence; we 102 * read 16 times getting one bit of data with each read. 103 */ 104 105static int 106get_eeprom_data(id_port, offset) 107 int id_port; 108 int offset; 109{ 110 int i, data = 0; 111 outb(id_port, 0x80 + offset); 112 for (i = 0; i < 16; i++) { 113 DELAY(BIT_DELAY_MULTIPLE * 1000); 114 data = (data << 1) | (inw(id_port) & 1); 115 } 116 return (data); 117} 118 119const char * 120ep_isa_match_id (id, isa_devs) 121 u_int32_t id; 122 struct isa_ident * isa_devs; 123{ 124 struct isa_ident * i = isa_devs; 125 while(i->name != NULL) { 126 if (id == i->id) 127 return (i->name); 128 i++; 129 } 130 return (NULL); 131} 132 133static void 134ep_isa_identify (driver_t *driver, device_t parent) 135{ 136 int tag = EP_LAST_TAG; 137 int found = 0; 138 int i; 139 int j; 140 const char * desc; 141 u_int16_t data; 142 u_int32_t irq; 143 u_int32_t ioport; 144 u_int32_t isa_id; 145 device_t child; 146 147 outb(ELINK_ID_PORT, 0); 148 outb(ELINK_ID_PORT, 0); 149 elink_idseq(ELINK_509_POLY); 150 elink_reset(); 151 152 DELAY(DELAY_MULTIPLE * 10000); 153 154 for (i = 0; i < EP_MAX_BOARDS; i++) { 155 156 outb(ELINK_ID_PORT, 0); 157 outb(ELINK_ID_PORT, 0); 158 elink_idseq(ELINK_509_POLY); 159 DELAY(400); 160 161 /* For the first probe, clear all 162 * board's tag registers. 163 * Otherwise kill off already-found 164 * boards. -- linux 3c509.c 165 */ 166 if (i == 0) { 167 outb(ELINK_ID_PORT, 0xd0); 168 } else { 169 outb(ELINK_ID_PORT, 0xd8); 170 } 171 172 /* Get out of loop if we're out of cards. */ 173 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 174 if (data != MFG_ID) { 175 break; 176 } 177 178 /* resolve contention using the Ethernet address */ 179 for (j = 0; j < 3; j++) { 180 (void)get_eeprom_data(ELINK_ID_PORT, j); 181 } 182 183 /* 184 * Construct an 'isa_id' in 'EISA' 185 * format. 186 */ 187 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 188 isa_id = (htons(data) << 16); 189 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID); 190 isa_id |= htons(data); 191 192 /* Find known ISA boards */ 193 desc = ep_isa_match_id(isa_id, ep_isa_devs); 194 if (!desc) { 195 if (bootverbose) { 196 device_printf(parent, "if_ep: unknown ID 0x%08x\n", 197 isa_id); 198 } 199 break; 200 } 201 202 /* Retreive IRQ */ 203 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG); 204 irq = (data >> 12); 205 206 /* Retreive IOPORT */ 207 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG); 208#ifdef PC98 209 ioport = (((data & 0x1f) * 0x100) + 0x40d0); 210#else 211 ioport = (((data & 0x1f) << 4) + 0x200); 212#endif 213 214 /* Test for an adapter with PnP support. */ 215 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP); 216 if (data == CAP_ISA) { 217 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1); 218 if (data & ICW1_IAS_PNP) { 219 if (bootverbose) { 220 device_printf(parent, "if_ep: Adapter at 0x%03x in PnP mode!\n", 221 ioport); 222 } 223 /* Set the adaptor tag so that the next card can be found. */ 224 outb(ELINK_ID_PORT, tag--); 225 continue; 226 } 227 } 228 229 /* Set the adaptor tag so that the next card can be found. */ 230 outb(ELINK_ID_PORT, tag--); 231 232 /* Activate the adaptor at the EEPROM location. */ 233 outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG); 234 235 /* Test for an adapter in TEST mode. */ 236 outw(ioport + EP_COMMAND, WINDOW_SELECT | 0); 237 data = inw(ioport + EP_W0_EEPROM_COMMAND); 238 if (data & EEPROM_TST_MODE) { 239 device_printf(parent, "if_ep: Adapter at 0x%03x in TEST mode! Erase pencil mark.\n", 240 ioport); 241 continue; 242 } 243 244 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1); 245 device_set_desc_copy(child, desc); 246 device_set_driver(child, driver); 247 bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); 248 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE); 249 250 if (bootverbose) { 251 device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n", 252 desc, ioport, ioport + EP_IOSIZE, irq); 253 } 254 255 found++; 256 } 257 258 return; 259} 260 261static int 262ep_isa_probe (device_t dev) 263{ 264 int error = 0; 265 266 /* Check isapnp ids */ 267 error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids); 268 269 /* If the card had a PnP ID that didn't match any we know about */ 270 if (error == ENXIO) { 271 return (error); 272 } 273 274 /* If we had some other problem. */ 275 if (!(error == 0 || error == ENOENT)) { 276 return (error); 277 } 278 279 /* If we have the resources we need then we're good to go. */ 280 if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) && 281 (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) { 282 return (0); 283 } 284 285 return (ENXIO); 286} 287 288static int 289ep_isa_attach (device_t dev) 290{ 291 struct ep_softc * sc = device_get_softc(dev); 292 int error = 0; 293 294 if ((error = ep_alloc(dev))) { 295 device_printf(dev, "ep_alloc() failed! (%d)\n", error); 296 goto bad; 297 } 298 299 ep_get_media(sc); 300 301 GO_WINDOW(0); 302 SET_IRQ(BASE, rman_get_start(sc->irq)); 303 304 if ((error = ep_attach(sc))) { 305 device_printf(dev, "ep_attach() failed! (%d)\n", error); 306 goto bad; 307 } 308 309 if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr, 310 sc, &sc->ep_intrhand))) { 311 device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); 312 goto bad; 313 } 314 315 return (0); 316bad: 317 ep_free(dev); 318 return (error); 319} 320 321static device_method_t ep_isa_methods[] = { 322 /* Device interface */ 323 DEVMETHOD(device_identify, ep_isa_identify), 324 DEVMETHOD(device_probe, ep_isa_probe), 325 DEVMETHOD(device_attach, ep_isa_attach), 326 327 { 0, 0 } 328}; 329 330static driver_t ep_isa_driver = { 331 "ep", 332 ep_isa_methods, 333 sizeof(struct ep_softc), 334}; 335 336extern devclass_t ep_devclass; 337 338DRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0); 339