if_ep_isa.c revision 54200
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 54200 1999-12-06 09:16:13Z 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 u_int16_t 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 3C509-TP EtherLink III" }, 77 { ISA_ID_3C509_BNC, "3Com 3C509-BNC EtherLink III" }, 78 { ISA_ID_3C509_COMBO, "3Com 3C509-Combo EtherLink III" }, 79 { ISA_ID_3C509_TPO, "3Com 3C509-TPO EtherLink III" }, 80 { 0, NULL }, 81}; 82 83static struct isa_pnp_id ep_ids[] = { 84 { 0x90506d50, "3Com 3C509B-TP EtherLink III (PnP)" }, /* TCM5090 */ 85 { 0x91506d50, "3Com 3C509B-BNC EtherLink III (PnP)" },/* TCM5091 */ 86 { 0x94506d50, "3Com 3C509B-Combo EtherLink III (PnP)" },/* TCM5094 */ 87 { 0x95506d50, "3Com 3C509B-TPO EtherLink III (PnP)" },/* 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 u_int16_t 106get_eeprom_data(id_port, offset) 107 int id_port; 108 int offset; 109{ 110 int i; 111 u_int16_t data = 0; 112 113 outb(id_port, EEPROM_CMD_RD|offset); 114 DELAY(BIT_DELAY_MULTIPLE * 1000); 115 for (i = 0; i < 16; i++) { 116 DELAY(50); 117 data = (data << 1) | (inw(id_port) & 1); 118 } 119 return (data); 120} 121 122const char * 123ep_isa_match_id (id, isa_devs) 124 u_int32_t id; 125 struct isa_ident * isa_devs; 126{ 127 struct isa_ident * i = isa_devs; 128 while(i->name != NULL) { 129 if (id == i->id) 130 return (i->name); 131 i++; 132 } 133 return (NULL); 134} 135 136static void 137ep_isa_identify (driver_t *driver, device_t parent) 138{ 139 int tag = EP_LAST_TAG; 140 int found = 0; 141 int i; 142 int j; 143 const char * desc; 144 u_int16_t data; 145 u_int32_t irq; 146 u_int32_t ioport; 147 u_int32_t isa_id; 148 device_t child; 149 150 outb(ELINK_ID_PORT, 0); 151 outb(ELINK_ID_PORT, 0); 152 elink_idseq(ELINK_509_POLY); 153 elink_reset(); 154 155 DELAY(DELAY_MULTIPLE * 10000); 156 157 for (i = 0; i < EP_MAX_BOARDS; i++) { 158 159 outb(ELINK_ID_PORT, 0); 160 outb(ELINK_ID_PORT, 0); 161 elink_idseq(ELINK_509_POLY); 162 DELAY(400); 163 164 /* For the first probe, clear all 165 * board's tag registers. 166 * Otherwise kill off already-found 167 * boards. -- linux 3c509.c 168 */ 169 if (i == 0) { 170 outb(ELINK_ID_PORT, 0xd0); 171 } else { 172 outb(ELINK_ID_PORT, 0xd8); 173 } 174 175 /* Get out of loop if we're out of cards. */ 176 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 177 if (data != MFG_ID) { 178 break; 179 } 180 181 /* resolve contention using the Ethernet address */ 182 for (j = 0; j < 3; j++) { 183 (void)get_eeprom_data(ELINK_ID_PORT, j); 184 } 185 186 /* 187 * Construct an 'isa_id' in 'EISA' 188 * format. 189 */ 190 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 191 isa_id = (htons(data) << 16); 192 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID); 193 isa_id |= htons(data); 194 195 /* Find known ISA boards */ 196 desc = ep_isa_match_id(isa_id, ep_isa_devs); 197 if (!desc) { 198 if (bootverbose) { 199 device_printf(parent, "if_ep: unknown ID 0x%08x\n", 200 isa_id); 201 } 202 break; 203 } 204 205 /* Retreive IRQ */ 206 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG); 207 irq = (data >> 12); 208 209 /* Retreive IOPORT */ 210 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG); 211#ifdef PC98 212 ioport = (((data & 0x1f) * 0x100) + 0x40d0); 213#else 214 ioport = (((data & 0x1f) << 4) + 0x200); 215#endif 216 217 /* Test for an adapter with PnP support. */ 218 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP); 219 if (data == CAP_ISA) { 220 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1); 221 if (data & ICW1_IAS_PNP) { 222 if (bootverbose) { 223 device_printf(parent, "if_ep: Adapter at 0x%03x in PnP mode!\n", 224 ioport); 225 } 226 /* Set the adaptor tag so that the next card can be found. */ 227 outb(ELINK_ID_PORT, tag--); 228 continue; 229 } 230 } 231 232 /* Set the adaptor tag so that the next card can be found. */ 233 outb(ELINK_ID_PORT, tag--); 234 235 /* Activate the adaptor at the EEPROM location. */ 236 outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG); 237 238 /* Test for an adapter in TEST mode. */ 239 outw(ioport + EP_COMMAND, WINDOW_SELECT | 0); 240 data = inw(ioport + EP_W0_EEPROM_COMMAND); 241 if (data & EEPROM_TST_MODE) { 242 device_printf(parent, "if_ep: Adapter at 0x%03x in TEST mode! Erase pencil mark.\n", 243 ioport); 244 continue; 245 } 246 247 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1); 248 device_set_desc_copy(child, desc); 249 device_set_driver(child, driver); 250 bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); 251 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE); 252 253 if (bootverbose) { 254 device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n", 255 desc, ioport, ioport + EP_IOSIZE, irq); 256 } 257 258 found++; 259 } 260 261 return; 262} 263 264static int 265ep_isa_probe (device_t dev) 266{ 267 int error = 0; 268 269 /* Check isapnp ids */ 270 error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids); 271 272 /* If the card had a PnP ID that didn't match any we know about */ 273 if (error == ENXIO) { 274 return (error); 275 } 276 277 /* If we had some other problem. */ 278 if (!(error == 0 || error == ENOENT)) { 279 return (error); 280 } 281 282 /* If we have the resources we need then we're good to go. */ 283 if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) && 284 (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) { 285 return (0); 286 } 287 288 return (ENXIO); 289} 290 291static int 292ep_isa_attach (device_t dev) 293{ 294 struct ep_softc * sc = device_get_softc(dev); 295 int error = 0; 296 297 if ((error = ep_alloc(dev))) { 298 device_printf(dev, "ep_alloc() failed! (%d)\n", error); 299 goto bad; 300 } 301 302 ep_get_media(sc); 303 304 GO_WINDOW(0); 305 SET_IRQ(BASE, rman_get_start(sc->irq)); 306 307 if ((error = ep_attach(sc))) { 308 device_printf(dev, "ep_attach() failed! (%d)\n", error); 309 goto bad; 310 } 311 312 if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr, 313 sc, &sc->ep_intrhand))) { 314 device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); 315 goto bad; 316 } 317 318 return (0); 319bad: 320 ep_free(dev); 321 return (error); 322} 323 324static device_method_t ep_isa_methods[] = { 325 /* Device interface */ 326 DEVMETHOD(device_identify, ep_isa_identify), 327 DEVMETHOD(device_probe, ep_isa_probe), 328 DEVMETHOD(device_attach, ep_isa_attach), 329 330 { 0, 0 } 331}; 332 333static driver_t ep_isa_driver = { 334 "ep", 335 ep_isa_methods, 336 sizeof(struct ep_softc), 337}; 338 339extern devclass_t ep_devclass; 340 341DRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0); 342