if_ep_isa.c revision 67164
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 67164 2000-10-15 14:19:01Z phk $ 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 50#include <isa/isavar.h> 51 52#include <dev/ep/if_epreg.h> 53#include <dev/ep/if_epvar.h> 54#include <i386/isa/elink.h> 55 56static u_int16_t get_eeprom_data (int, int); 57 58static void ep_isa_identify (driver_t *, device_t); 59static int ep_isa_probe (device_t); 60static int ep_isa_attach (device_t); 61 62struct isa_ident { 63 u_int32_t id; 64 char * name; 65}; 66const char * ep_isa_match_id (u_int32_t, struct isa_ident *); 67 68#define ISA_ID_3C509_XXX 0x0506d509 69#define ISA_ID_3C509_TP 0x506d5090 70#define ISA_ID_3C509_BNC 0x506d5091 71#define ISA_ID_3C509_COMBO 0x506d5094 72#define ISA_ID_3C509_TPO 0x506d5095 73#define ISA_ID_3C509_TPC 0x506d5098 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 { ISA_ID_3C509_TPC, "3Com 3C509-TPC EtherLink III" }, 81 { 0, NULL }, 82}; 83 84static struct isa_pnp_id ep_ids[] = { 85 { 0x90506d50, "3Com 3C509B-TP EtherLink III (PnP)" }, /* TCM5090 */ 86 { 0x91506d50, "3Com 3C509B-BNC EtherLink III (PnP)" },/* TCM5091 */ 87 { 0x94506d50, "3Com 3C509B-Combo EtherLink III (PnP)" },/* TCM5094 */ 88 { 0x95506d50, "3Com 3C509B-TPO EtherLink III (PnP)" },/* TCM5095 */ 89 { 0x98506d50, "3Com 3C509B-TPC EtherLink III (PnP)" },/* TCM5098 */ 90 { 0xf780d041, NULL }, /* PNP80f7 */ 91 { 0, NULL }, 92}; 93 94/* 95 * We get eeprom data from the id_port given an offset into the eeprom. 96 * Basically; after the ID_sequence is sent to all of the cards; they enter 97 * the ID_CMD state where they will accept command requests. 0x80-0xbf loads 98 * the eeprom data. We then read the port 16 times and with every read; the 99 * cards check for contention (ie: if one card writes a 0 bit and another 100 * writes a 1 bit then the host sees a 0. At the end of the cycle; each card 101 * compares the data on the bus; if there is a difference then that card goes 102 * into ID_WAIT state again). In the meantime; one bit of data is returned in 103 * the AX register which is conveniently returned to us by inb(). Hence; we 104 * read 16 times getting one bit of data with each read. 105 */ 106 107static u_int16_t 108get_eeprom_data(id_port, offset) 109 int id_port; 110 int offset; 111{ 112 int i; 113 u_int16_t data = 0; 114 115 outb(id_port, EEPROM_CMD_RD|offset); 116 DELAY(BIT_DELAY_MULTIPLE * 1000); 117 for (i = 0; i < 16; i++) { 118 DELAY(50); 119 data = (data << 1) | (inw(id_port) & 1); 120 } 121 return (data); 122} 123 124const char * 125ep_isa_match_id (id, isa_devs) 126 u_int32_t id; 127 struct isa_ident * isa_devs; 128{ 129 struct isa_ident * i = isa_devs; 130 while(i->name != NULL) { 131 if (id == i->id) 132 return (i->name); 133 i++; 134 } 135 /* 136 * If we see a card that is likely to be a 3c509 137 * return something so that it will work; be annoying 138 * so that the user will tell us about it though. 139 */ 140 if ((id >> 4) == ISA_ID_3C509_XXX) { 141 return ("Unknown 3c509; notify maintainer!"); 142 } 143 return (NULL); 144} 145 146static void 147ep_isa_identify (driver_t *driver, device_t parent) 148{ 149 int tag = EP_LAST_TAG; 150 int found = 0; 151 int i; 152 int j; 153 const char * desc; 154 u_int16_t data; 155 u_int32_t irq; 156 u_int32_t ioport; 157 u_int32_t isa_id; 158 device_t child; 159 160 outb(ELINK_ID_PORT, 0); 161 outb(ELINK_ID_PORT, 0); 162 elink_idseq(ELINK_509_POLY); 163 elink_reset(); 164 165 DELAY(DELAY_MULTIPLE * 10000); 166 167 for (i = 0; i < EP_MAX_BOARDS; i++) { 168 169 outb(ELINK_ID_PORT, 0); 170 outb(ELINK_ID_PORT, 0); 171 elink_idseq(ELINK_509_POLY); 172 DELAY(400); 173 174 /* For the first probe, clear all 175 * board's tag registers. 176 * Otherwise kill off already-found 177 * boards. -- linux 3c509.c 178 */ 179 if (i == 0) { 180 outb(ELINK_ID_PORT, 0xd0); 181 } else { 182 outb(ELINK_ID_PORT, 0xd8); 183 } 184 185 /* Get out of loop if we're out of cards. */ 186 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 187 if (data != MFG_ID) { 188 break; 189 } 190 191 /* resolve contention using the Ethernet address */ 192 for (j = 0; j < 3; j++) { 193 (void)get_eeprom_data(ELINK_ID_PORT, j); 194 } 195 196 /* 197 * Construct an 'isa_id' in 'EISA' 198 * format. 199 */ 200 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID); 201 isa_id = (htons(data) << 16); 202 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID); 203 isa_id |= htons(data); 204 205 /* Find known ISA boards */ 206 desc = ep_isa_match_id(isa_id, ep_isa_devs); 207 if (!desc) { 208 if (bootverbose) { 209 device_printf(parent, "if_ep: unknown ID 0x%08x\n", 210 isa_id); 211 } 212 continue; 213 } 214 215 /* Retreive IRQ */ 216 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG); 217 irq = (data >> 12); 218 219 /* Retreive IOPORT */ 220 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG); 221#ifdef PC98 222 ioport = (((data & ADDR_CFG_MASK) * 0x100) + 0x40d0); 223#else 224 ioport = (((data & ADDR_CFG_MASK) << 4) + 0x200); 225#endif 226 227 if ((data & ADDR_CFG_MASK) == ADDR_CFG_EISA) { 228 device_printf(parent, "if_ep: <%s> at port 0x%03x in EISA mode!\n", 229 desc, ioport); 230 /* Set the adaptor tag so that the next card can be found. */ 231 outb(ELINK_ID_PORT, tag--); 232 continue; 233 } 234 235 /* Test for an adapter with PnP support. */ 236 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP); 237 if (data == CAP_ISA) { 238 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1); 239 if (data & ICW1_IAS_PNP) { 240 if (bootverbose) { 241 device_printf(parent, "if_ep: <%s> at 0x%03x in PnP mode!\n", 242 desc, ioport); 243 } 244 /* Set the adaptor tag so that the next card can be found. */ 245 outb(ELINK_ID_PORT, tag--); 246 continue; 247 } 248 } 249 250 /* Set the adaptor tag so that the next card can be found. */ 251 outb(ELINK_ID_PORT, tag--); 252 253 /* Activate the adaptor at the EEPROM location. */ 254 outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG); 255 256 /* Test for an adapter in TEST mode. */ 257 outw(ioport + EP_COMMAND, WINDOW_SELECT | 0); 258 data = inw(ioport + EP_W0_EEPROM_COMMAND); 259 if (data & EEPROM_TST_MODE) { 260 device_printf(parent, "if_ep: <%s> at port 0x%03x in TEST mode! Erase pencil mark.\n", 261 desc, ioport); 262 continue; 263 } 264 265 child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ep", -1); 266 device_set_desc_copy(child, desc); 267 device_set_driver(child, driver); 268 bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); 269 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE); 270 271 if (bootverbose) { 272 device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n", 273 desc, ioport, ioport + EP_IOSIZE, irq); 274 } 275 276 found++; 277 } 278 279 return; 280} 281 282static int 283ep_isa_probe (device_t dev) 284{ 285 int error = 0; 286 287 /* Check isapnp ids */ 288 error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids); 289 290 /* If the card had a PnP ID that didn't match any we know about */ 291 if (error == ENXIO) { 292 return (error); 293 } 294 295 /* If we had some other problem. */ 296 if (!(error == 0 || error == ENOENT)) { 297 return (error); 298 } 299 300 /* If we have the resources we need then we're good to go. */ 301 if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) && 302 (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) { 303 return (0); 304 } 305 306 return (ENXIO); 307} 308 309static int 310ep_isa_attach (device_t dev) 311{ 312 struct ep_softc * sc = device_get_softc(dev); 313 int error = 0; 314 315 if ((error = ep_alloc(dev))) { 316 device_printf(dev, "ep_alloc() failed! (%d)\n", error); 317 goto bad; 318 } 319 320 ep_get_media(sc); 321 322 GO_WINDOW(0); 323 SET_IRQ(BASE, rman_get_start(sc->irq)); 324 325 if ((error = ep_attach(sc))) { 326 device_printf(dev, "ep_attach() failed! (%d)\n", error); 327 goto bad; 328 } 329 330 if ((error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET, ep_intr, 331 sc, &sc->ep_intrhand))) { 332 device_printf(dev, "bus_setup_intr() failed! (%d)\n", error); 333 goto bad; 334 } 335 336 return (0); 337bad: 338 ep_free(dev); 339 return (error); 340} 341 342static device_method_t ep_isa_methods[] = { 343 /* Device interface */ 344 DEVMETHOD(device_identify, ep_isa_identify), 345 DEVMETHOD(device_probe, ep_isa_probe), 346 DEVMETHOD(device_attach, ep_isa_attach), 347 348 { 0, 0 } 349}; 350 351static driver_t ep_isa_driver = { 352 "ep", 353 ep_isa_methods, 354 sizeof(struct ep_softc), 355}; 356 357extern devclass_t ep_devclass; 358 359DRIVER_MODULE(ep, isa, ep_isa_driver, ep_devclass, 0, 0); 360