1 /* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */
5 * Copyright (c) 1996 Charles D. Cranor and Washington University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Charles D. Cranor and
19 * Washington University.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 * $FreeBSD: src/sys/pci/if_en_pci.c,v 1.12 1999/08/21 22:10:49 msmith Exp $
39 * i f _ e n _ p c i . c
41 * author: Chuck Cranor <chuck@ccrc.wustl.edu>
42 * started: spring, 1996.
44 * FreeBSD PCI glue for the eni155p card.
45 * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs.
50 #include <sys/param.h>
51 #include <sys/kernel.h>
52 #include <sys/systm.h>
53 #if defined(__DragonFly__) || defined(__FreeBSD__)
54 #include <sys/eventhandler.h>
56 #include <sys/malloc.h>
57 #include <sys/socket.h>
59 #include <machine/clock.h> /* for DELAY */
63 #include <bus/pci/pcidevs.h>
64 #include <bus/pci/pcivar.h>
65 #include <bus/pci/pcireg.h>
67 #include <dev/atm/en/midwayreg.h>
68 #include <dev/atm/en/midwayvar.h>
75 static void en_pci_attach (pcici_t, int);
76 static const char *en_pci_probe (pcici_t, pcidi_t);
77 static void en_pci_shutdown (void *, int);
84 /* bus independent stuff */
85 struct en_softc esc; /* includes "device" structure */
88 void *sc_ih; /* interrupt handle */
89 pci_chipset_tag_t en_pc; /* for PCI calls */
90 pcici_t en_confid; /* config id */
93 #if !defined(MIDWAY_ENIONLY)
94 static void eni_get_macaddr (struct en_pci_softc *);
96 #if !defined(MIDWAY_ADPONLY)
97 static void adp_get_macaddr (struct en_pci_softc *);
101 * pointers to softcs (we alloc)
104 static struct en_pci_softc *enpcis[NEN] = {0};
105 extern struct cfdriver en_cd;
108 * autoconfig structures
111 static u_long en_pci_count;
113 static struct pci_device endevice = {
121 COMPAT_PCI_DRIVER (if_en, endevice);
124 * local defines (PCI specific stuff)
128 * address of config base memory address register in PCI config space
129 * (this is card specific)
132 #define PCI_CBMA 0x10
135 * tonga (pci bridge). ENI cards only!
138 #define EN_TONGA 0x60 /* PCI config addr of tonga reg */
140 #define TONGA_SWAP_DMA 0x80 /* endian swap control */
141 #define TONGA_SWAP_BYTE 0x40
142 #define TONGA_SWAP_WORD 0x20
145 * adaptec pci bridge. ADP cards only!
148 #define ADP_PCIREG 0x050040 /* PCI control register */
150 #define ADP_PCIREG_RESET 0x1 /* reset card */
151 #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */
152 #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */
153 #define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */
155 #define PCI_VENDOR(x) ((x) & 0xFFFF)
156 #define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
158 #if !defined(MIDWAY_ENIONLY)
160 static void adp_busreset (void *);
163 * bus specific reset function [ADP only!]
167 adp_busreset(void *v)
169 struct en_softc *sc = (struct en_softc *) v;
172 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, ADP_PCIREG_RESET);
173 DELAY(1000); /* let it reset */
174 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
175 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG,
176 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA|ADP_PCIREG_IENABLE));
177 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG);
178 if ((dummy & (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA)) !=
179 (ADP_PCIREG_SWAP_WORD|ADP_PCIREG_SWAP_DMA))
180 kprintf("adp_busreset: Adaptec ATM did NOT reset!\n");
184 /***********************************************************************/
191 en_pci_probe(pcici_t config_id, pcidi_t device_id)
193 #if !defined(MIDWAY_ADPONLY)
194 if (PCI_VENDOR(device_id) == PCI_VENDOR_EFFICIENTNETS &&
195 (PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PF ||
196 PCI_CHIPID(device_id) == PCI_PRODUCT_EFFICIENTNETS_ENI155PA))
197 return "Efficient Networks ENI-155p";
200 #if !defined(MIDWAY_ENIONLY)
201 if (PCI_VENDOR(device_id) == PCI_VENDOR_ADP &&
202 (PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5900 ||
203 PCI_CHIPID(device_id) == PCI_PRODUCT_ADP_AIC5905))
204 return "Adaptec 155 ATM";
211 en_pci_attach(pcici_t config_id, int unit)
214 struct en_pci_softc *scp;
220 kprintf("en%d: not configured; kernel is built for only %d device%s.\n",
221 unit, NEN, NEN == 1 ? "" : "s");
225 scp = kmalloc(sizeof(*scp), M_DEVBUF, M_WAITOK | M_ZERO);
228 retval = pci_map_mem(config_id, PCI_CBMA, (vm_offset_t *) &sc->en_base, &pa);
231 kfree((caddr_t) scp, M_DEVBUF);
234 enpcis[unit] = scp; /* lock it in */
235 en_cd.cd_devs[unit] = sc; /* fake a cfdriver structure */
236 en_cd.cd_ndevs = NEN;
237 if_initname(&(sc->enif), "en", unit);
238 ksnprintf(sc->sc_dev.dv_xname, sizeof(sc->sc_dev.dv_xname), "%s",
240 scp->en_confid = config_id;
243 * figure out if we are an adaptec card or not.
244 * XXX: why do we have to re-read PC_ID_REG when en_pci_probe already
248 device_id = pci_conf_read(config_id, PCI_ID_REG);
249 sc->is_adaptec = (PCI_VENDOR(device_id) == PCI_VENDOR_ADP) ? 1 : 0;
252 * Add shutdown hook so that DMA is disabled prior to reboot. Not
253 * doing so could allow DMA to corrupt kernel memory during the
254 * reboot before the driver initializes.
256 EVENTHANDLER_REGISTER(shutdown_post_sync, en_pci_shutdown, scp,
257 SHUTDOWN_PRI_DRIVER);
259 if (!pci_map_int(config_id, en_intr, (void *) sc)) {
260 kprintf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname);
263 sc->ipl = 1; /* XXX */
269 #if !defined(MIDWAY_ENIONLY)
270 if (sc->is_adaptec) {
271 adp_get_macaddr(scp);
272 sc->en_busreset = adp_busreset;
277 #if !defined(MIDWAY_ADPONLY)
278 if (!sc->is_adaptec) {
279 eni_get_macaddr(scp);
280 sc->en_busreset = NULL;
281 pci_conf_write(config_id, EN_TONGA, (TONGA_SWAP_DMA|TONGA_SWAP_WORD));
286 * done PCI specific stuff
294 en_pci_shutdown(void *sc, int howto)
296 struct en_pci_softc *psc = (struct en_pci_softc *)sc;
302 #if !defined(MIDWAY_ENIONLY)
304 #if defined(__DragonFly__) || defined(sparc) || defined(__FreeBSD__)
305 #define bus_space_read_1(t, h, o) \
306 ((void)t, (*(volatile u_int8_t *)((h) + (o))))
310 adp_get_macaddr(struct en_pci_softc *scp)
312 struct en_softc * sc = (struct en_softc *)scp;
315 for (lcv = 0; lcv < sizeof(sc->macaddr); lcv++)
316 sc->macaddr[lcv] = bus_space_read_1(sc->en_memt, sc->en_base,
317 MID_ADPMACOFF + lcv);
320 #endif /* MIDWAY_ENIONLY */
322 #if !defined(MIDWAY_ADPONLY)
325 * Read station (MAC) address from serial EEPROM.
326 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC.
328 #define EN_PROM_MAGIC 0x0c
329 #define EN_PROM_DATA 0x02
330 #define EN_PROM_CLK 0x01
334 eni_get_macaddr(struct en_pci_softc *scp)
336 struct en_softc * sc = (struct en_softc *)scp;
337 pcici_t id = scp->en_confid;
339 u_int32_t data, t_data;
342 t_data = pci_conf_read(id, EN_TONGA) & 0xffffff00;
344 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK;
345 pci_conf_write(id, EN_TONGA, data);
347 for (i = 0; i < sizeof(sc->macaddr); i ++){
348 /* start operation */
349 data |= EN_PROM_DATA ;
350 pci_conf_write(id, EN_TONGA, data);
351 data |= EN_PROM_CLK ;
352 pci_conf_write(id, EN_TONGA, data);
353 data &= ~EN_PROM_DATA ;
354 pci_conf_write(id, EN_TONGA, data);
355 data &= ~EN_PROM_CLK ;
356 pci_conf_write(id, EN_TONGA, data);
357 /* send address with serial line */
358 address = ((i + EN_ESI) << 1) + 1;
359 for ( j = 7 ; j >= 0 ; j --){
360 data = (address >> j) & 1 ? data | EN_PROM_DATA :
361 data & ~EN_PROM_DATA;
362 pci_conf_write(id, EN_TONGA, data);
363 data |= EN_PROM_CLK ;
364 pci_conf_write(id, EN_TONGA, data);
365 data &= ~EN_PROM_CLK ;
366 pci_conf_write(id, EN_TONGA, data);
369 data |= EN_PROM_DATA ;
370 pci_conf_write(id, EN_TONGA, data);
371 data |= EN_PROM_CLK ;
372 pci_conf_write(id, EN_TONGA, data);
373 data = pci_conf_read(id, EN_TONGA);
374 data &= ~EN_PROM_CLK ;
375 pci_conf_write(id, EN_TONGA, data);
376 data |= EN_PROM_DATA ;
377 pci_conf_write(id, EN_TONGA, data);
381 for ( j = 7 ; j >= 0 ; j --){
383 data |= EN_PROM_DATA ;
384 pci_conf_write(id, EN_TONGA, data);
385 data |= EN_PROM_CLK ;
386 pci_conf_write(id, EN_TONGA, data);
387 data = pci_conf_read(id, EN_TONGA);
388 if(data & EN_PROM_DATA) tmp |= 1;
389 data &= ~EN_PROM_CLK ;
390 pci_conf_write(id, EN_TONGA, data);
391 data |= EN_PROM_DATA ;
392 pci_conf_write(id, EN_TONGA, data);
395 data |= EN_PROM_DATA ;
396 pci_conf_write(id, EN_TONGA, data);
397 data |= EN_PROM_CLK ;
398 pci_conf_write(id, EN_TONGA, data);
399 data = pci_conf_read(id, EN_TONGA);
400 data &= ~EN_PROM_CLK ;
401 pci_conf_write(id, EN_TONGA, data);
402 data |= EN_PROM_DATA ;
403 pci_conf_write(id, EN_TONGA, data);
405 sc->macaddr[i] = tmp;
408 data &= ~EN_PROM_DATA;
409 pci_conf_write(id, EN_TONGA, data);
411 pci_conf_write(id, EN_TONGA, data);
412 data |= EN_PROM_DATA;
413 pci_conf_write(id, EN_TONGA, data);
414 pci_conf_write(id, EN_TONGA, t_data);
417 #endif /* !MIDWAY_ADPONLY */