2 * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
30 * $FreeBSD: src/sys/dev/ep/if_ep_isa.c,v 1.8.2.1 2000/12/16 03:47:57 nyan Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/socket.h>
37 #include <sys/module.h>
38 #include <sys/interrupt.h>
41 #include <sys/machintr.h>
44 #include <net/if_arp.h>
45 #include <net/if_media.h>
47 #include <machine/clock.h>
49 #include <bus/isa/isavar.h>
50 #include <bus/isa/pnpvar.h>
54 #include "../elink_layer/elink.h"
56 static u_int16_t get_eeprom_data (int, int);
58 static int ep_isa_identify (driver_t *, device_t);
59 static int ep_isa_probe (device_t);
60 static int ep_isa_attach (device_t);
66 const char * ep_isa_match_id (u_int32_t, struct isa_ident *);
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
75 static 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" },
84 static 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 */
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.
108 get_eeprom_data(int id_port, int offset)
113 outb(id_port, EEPROM_CMD_RD|offset);
114 DELAY(BIT_DELAY_MULTIPLE * 1000);
115 for (i = 0; i < 16; i++) {
117 data = (data << 1) | (inw(id_port) & 1);
123 ep_isa_match_id(u_int32_t id, struct isa_ident *isa_devs)
125 struct isa_ident * i = isa_devs;
127 while(i->name != NULL) {
133 * If we see a card that is likely to be a 3c509
134 * return something so that it will work; be annoying
135 * so that the user will tell us about it though.
137 if ((id >> 4) == ISA_ID_3C509_XXX) {
138 return ("Unknown 3c509; notify maintainer!");
144 ep_isa_identify(driver_t *driver, device_t parent)
146 int tag = EP_LAST_TAG;
158 * Rescans not currently supported.
160 if (device_get_state(parent) == DS_ATTACHED)
164 * Check for the existance of the EISA bus.
166 outb(ELINK_ID_PORT, 0);
167 outb(ELINK_ID_PORT, 0);
168 elink_idseq(ELINK_509_POLY);
171 DELAY(DELAY_MULTIPLE * 10000);
173 for (i = 0; i < EP_MAX_BOARDS; i++) {
175 outb(ELINK_ID_PORT, 0);
176 outb(ELINK_ID_PORT, 0);
177 elink_idseq(ELINK_509_POLY);
180 /* For the first probe, clear all
181 * board's tag registers.
182 * Otherwise kill off already-found
183 * boards. -- linux 3c509.c
186 outb(ELINK_ID_PORT, 0xd0);
188 outb(ELINK_ID_PORT, 0xd8);
191 /* Get out of loop if we're out of cards. */
192 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID);
193 if (data != MFG_ID) {
197 /* resolve contention using the Ethernet address */
198 for (j = 0; j < 3; j++) {
199 get_eeprom_data(ELINK_ID_PORT, j);
203 * Construct an 'isa_id' in 'EISA'
206 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_MFG_ID);
207 isa_id = (htons(data) << 16);
208 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_PROD_ID);
209 isa_id |= htons(data);
211 /* Find known ISA boards */
212 desc = ep_isa_match_id(isa_id, ep_isa_devs);
215 device_printf(parent, "if_ep: unknown ID 0x%08x\n",
222 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_RESOURCE_CFG);
225 /* Retreive IOPORT */
226 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_ADDR_CFG);
227 ioport = (((data & 0x1f) << 4) + 0x200);
229 /* Test for an adapter with PnP support. */
230 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_CAP);
231 if (data == CAP_ISA) {
232 data = get_eeprom_data(ELINK_ID_PORT, EEPROM_INT_CONFIG_1);
233 if (data & ICW1_IAS_PNP) {
235 device_printf(parent, "if_ep: <%s> at 0x%03x in PnP mode!\n",
238 /* Set the adaptor tag so that the next card can be found. */
239 outb(ELINK_ID_PORT, tag--);
244 /* Set the adaptor tag so that the next card can be found. */
245 outb(ELINK_ID_PORT, tag--);
247 /* Activate the adaptor at the EEPROM location. */
248 outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG);
250 /* Test for an adapter in TEST mode. */
251 outw(ioport + EP_COMMAND, WINDOW_SELECT | 0);
252 data = inw(ioport + EP_W0_EEPROM_COMMAND);
253 if (data & EEPROM_TST_MODE) {
254 device_printf(parent, "if_ep: <%s> at port 0x%03x in TEST mode! Erase pencil mark.\n",
259 child = BUS_ADD_CHILD(parent, parent,
260 ISA_ORDER_SPECULATIVE, "ep", -1);
261 device_set_desc_copy(child, desc);
262 device_set_driver(child, driver);
263 bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1,
264 machintr_intr_cpuid(irq));
265 bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EP_IOSIZE, -1);
268 device_printf(parent, "if_ep: <%s> at port 0x%03x-0x%03x irq %d\n",
269 desc, ioport, ioport + EP_IOSIZE, irq);
274 return (found ? 0 : ENXIO);
278 ep_isa_probe(device_t dev)
282 /* Check isapnp ids */
283 error = ISA_PNP_PROBE(device_get_parent(dev), dev, ep_ids);
285 /* If the card had a PnP ID that didn't match any we know about */
286 if (error == ENXIO) {
290 /* If we had some other problem. */
291 if (!(error == 0 || error == ENOENT)) {
295 /* If we have the resources we need then we're good to go. */
296 if ((bus_get_resource_start(dev, SYS_RES_IOPORT, 0) != 0) &&
297 (bus_get_resource_start(dev, SYS_RES_IRQ, 0) != 0)) {
305 ep_isa_attach(device_t dev)
307 struct ep_softc * sc = device_get_softc(dev);
308 struct ifnet * ifp = &sc->arpcom.ac_if;
311 if ((error = ep_alloc(dev))) {
312 device_printf(dev, "ep_alloc() failed! (%d)\n", error);
319 SET_IRQ(BASE, rman_get_start(sc->irq));
321 if ((error = ep_attach(sc))) {
322 device_printf(dev, "ep_attach() failed! (%d)\n", error);
326 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE, ep_intr,
327 sc, &sc->ep_intrhand, ifp->if_serializer);
329 device_printf(dev, "bus_setup_intr() failed! (%d)\n", error);
333 ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->irq));
334 KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
342 static 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),
351 static driver_t ep_isa_driver = {
354 sizeof(struct ep_softc),
357 extern devclass_t ep_devclass;
359 DRIVER_MODULE(if_ep, isa, ep_isa_driver, ep_devclass, NULL, NULL);