1 /* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */
4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
9 * Simulation Facility, NASA Ames Research Center.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
34 * Copyright (c) 1992, 1993
35 * The Regents of the University of California. All rights reserved.
37 * This code is derived from software contributed to Berkeley by
38 * Ralph Campbell and Rick Macklem.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
43 * 1. Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * 2. Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in the
47 * documentation and/or other materials provided with the distribution.
48 * 3. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
67 #include <sys/cdefs.h>
68 __FBSDID("$FreeBSD$");
70 #include <sys/param.h>
71 #include <sys/systm.h>
73 #include <sys/endian.h>
74 #include <sys/kernel.h>
76 #include <sys/module.h>
77 #include <sys/mutex.h>
78 #include <sys/resource.h>
80 #include <sys/socket.h>
82 #include <net/ethernet.h>
84 #include <net/if_media.h>
86 #include <machine/bus.h>
87 #include <machine/resource.h>
89 #include <dev/pci/pcireg.h>
90 #include <dev/pci/pcivar.h>
92 #include <dev/le/lancereg.h>
93 #include <dev/le/lancevar.h>
94 #include <dev/le/am79900var.h>
96 #define AMD_VENDOR 0x1022
97 #define AMD_PCNET_PCI 0x2000
98 #define AMD_PCNET_HOME 0x2001
99 #define PCNET_MEMSIZE (32*1024)
100 #define PCNET_PCI_RDP 0x10
101 #define PCNET_PCI_RAP 0x12
102 #define PCNET_PCI_BDP 0x16
104 struct le_pci_softc {
105 struct am79900_softc sc_am79900; /* glue to MI code */
107 struct resource *sc_rres;
109 struct resource *sc_ires;
112 bus_dma_tag_t sc_pdmat;
113 bus_dma_tag_t sc_dmat;
114 bus_dmamap_t sc_dmam;
117 static device_probe_t le_pci_probe;
118 static device_attach_t le_pci_attach;
119 static device_detach_t le_pci_detach;
120 static device_resume_t le_pci_resume;
121 static device_suspend_t le_pci_suspend;
123 static device_method_t le_pci_methods[] = {
124 /* Device interface */
125 DEVMETHOD(device_probe, le_pci_probe),
126 DEVMETHOD(device_attach, le_pci_attach),
127 DEVMETHOD(device_detach, le_pci_detach),
128 /* We can just use the suspend method here. */
129 DEVMETHOD(device_shutdown, le_pci_suspend),
130 DEVMETHOD(device_suspend, le_pci_suspend),
131 DEVMETHOD(device_resume, le_pci_resume),
136 DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc));
137 DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0);
138 MODULE_DEPEND(le, ether, 1, 1, 1);
140 static const int le_home_supmedia[] = {
141 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0)
144 static const int le_pci_supmedia[] = {
145 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
146 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0),
147 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
148 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0),
149 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0),
150 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0)
153 static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t);
154 static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t);
155 static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t);
156 static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t);
157 static int le_pci_mediachange(struct lance_softc *);
158 static void le_pci_hwreset(struct lance_softc *);
159 static bus_dmamap_callback_t le_pci_dma_callback;
162 le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val)
164 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
166 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
167 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
168 bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val);
172 le_pci_rdbcr(struct lance_softc *sc, uint16_t port)
174 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
176 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
177 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
178 return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP));
182 le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
184 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
186 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
187 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
188 bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val);
192 le_pci_rdcsr(struct lance_softc *sc, uint16_t port)
194 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
196 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port);
197 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE);
198 return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP));
202 le_pci_mediachange(struct lance_softc *sc)
204 struct ifmedia *ifm = &sc->sc_media;
207 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
210 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
211 le_pci_wrbcr(sc, LE_BCR49,
212 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1);
213 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
214 le_pci_wrbcr(sc, LE_BCR2,
215 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL);
217 le_pci_wrbcr(sc, LE_BCR2,
218 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL);
220 reg = le_pci_rdcsr(sc, LE_CSR15);
221 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK);
222 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T)
223 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T);
225 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI);
226 le_pci_wrcsr(sc, LE_CSR15, reg);
229 reg = le_pci_rdbcr(sc, LE_BCR9);
230 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
233 * Allow FDX on AUI only if explicitly chosen,
234 * not in autoselect mode.
236 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5)
242 le_pci_wrbcr(sc, LE_BCR9, reg);
248 le_pci_hwreset(struct lance_softc *sc)
252 * Chip is stopped. Set software style to PCnet-PCI (32-bit).
253 * Actually, am79900.c implements ILACC support (hence its
254 * name) but unfortunately VMware does not. As far as this
255 * driver is concerned that should not make a difference
256 * though, as the settings used have the same meaning for
257 * both, ILACC and PCnet-PCI (note that there would be a
258 * difference for the ADD_FCS/NO_FCS bit if used).
260 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2);
264 le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
266 struct lance_softc *sc = (struct lance_softc *)xsc;
270 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
271 sc->sc_addr = segs[0].ds_addr;
275 le_pci_probe(device_t dev)
278 if (pci_get_vendor(dev) != AMD_VENDOR)
281 switch (pci_get_device(dev)) {
283 device_set_desc(dev, "AMD PCnet-PCI");
284 /* Let pcn(4) win. */
285 return (BUS_PROBE_LOW_PRIORITY);
287 device_set_desc(dev, "AMD PCnet-Home");
288 /* Let pcn(4) win. */
289 return (BUS_PROBE_LOW_PRIORITY);
296 le_pci_attach(device_t dev)
298 struct le_pci_softc *lesc;
299 struct lance_softc *sc;
302 lesc = device_get_softc(dev);
303 sc = &lesc->sc_am79900.lsc;
305 LE_LOCK_INIT(sc, device_get_nameunit(dev));
307 pci_enable_busmaster(dev);
310 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
312 if (lesc->sc_rres == NULL) {
313 device_printf(dev, "cannot allocate registers\n");
319 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
320 &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
321 device_printf(dev, "cannot allocate interrupt\n");
326 error = bus_dma_tag_create(
327 bus_get_dma_tag(dev), /* parent */
328 1, 0, /* alignment, boundary */
329 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
330 BUS_SPACE_MAXADDR, /* highaddr */
331 NULL, NULL, /* filter, filterarg */
332 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
334 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
336 NULL, NULL, /* lockfunc, lockarg */
339 device_printf(dev, "cannot allocate parent DMA tag\n");
343 sc->sc_memsize = PCNET_MEMSIZE;
345 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte
346 * aligned and the ring descriptors must be 16-byte aligned when using
347 * a 32-bit software style.
349 error = bus_dma_tag_create(
350 lesc->sc_pdmat, /* parent */
351 16, 0, /* alignment, boundary */
352 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
353 BUS_SPACE_MAXADDR, /* highaddr */
354 NULL, NULL, /* filter, filterarg */
355 sc->sc_memsize, /* maxsize */
357 sc->sc_memsize, /* maxsegsize */
359 NULL, NULL, /* lockfunc, lockarg */
362 device_printf(dev, "cannot allocate buffer DMA tag\n");
366 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
367 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
369 device_printf(dev, "cannot allocate DMA buffer memory\n");
374 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
375 sc->sc_memsize, le_pci_dma_callback, sc, 0);
376 if (error != 0 || sc->sc_addr == 0) {
377 device_printf(dev, "cannot load DMA buffer map\n");
381 sc->sc_flags = LE_BSWAP;
384 sc->sc_mediastatus = NULL;
385 switch (pci_get_device(dev)) {
387 sc->sc_mediachange = le_pci_mediachange;
388 sc->sc_supmedia = le_home_supmedia;
389 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int);
390 sc->sc_defaultmedia = le_home_supmedia[0];
393 sc->sc_mediachange = le_pci_mediachange;
394 sc->sc_supmedia = le_pci_supmedia;
395 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int);
396 sc->sc_defaultmedia = le_pci_supmedia[0];
400 * Extract the physical MAC address from the ROM.
402 bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr,
403 sizeof(sc->sc_enaddr));
405 sc->sc_copytodesc = lance_copytobuf_contig;
406 sc->sc_copyfromdesc = lance_copyfrombuf_contig;
407 sc->sc_copytobuf = lance_copytobuf_contig;
408 sc->sc_copyfrombuf = lance_copyfrombuf_contig;
409 sc->sc_zerobuf = lance_zerobuf_contig;
411 sc->sc_rdcsr = le_pci_rdcsr;
412 sc->sc_wrcsr = le_pci_wrcsr;
413 sc->sc_hwreset = le_pci_hwreset;
414 sc->sc_hwinit = NULL;
415 sc->sc_hwintr = NULL;
416 sc->sc_nocarrier = NULL;
418 error = am79900_config(&lesc->sc_am79900, device_get_name(dev),
419 device_get_unit(dev));
421 device_printf(dev, "cannot attach Am79900\n");
425 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE,
426 NULL, am79900_intr, sc, &lesc->sc_ih);
428 device_printf(dev, "cannot set up interrupt\n");
435 am79900_detach(&lesc->sc_am79900);
437 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
439 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
441 bus_dma_tag_destroy(lesc->sc_dmat);
443 bus_dma_tag_destroy(lesc->sc_pdmat);
445 bus_release_resource(dev, SYS_RES_IRQ,
446 rman_get_rid(lesc->sc_ires), lesc->sc_ires);
448 bus_release_resource(dev, SYS_RES_IOPORT,
449 rman_get_rid(lesc->sc_rres), lesc->sc_rres);
456 le_pci_detach(device_t dev)
458 struct le_pci_softc *lesc;
459 struct lance_softc *sc;
461 lesc = device_get_softc(dev);
462 sc = &lesc->sc_am79900.lsc;
464 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih);
465 am79900_detach(&lesc->sc_am79900);
466 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
467 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
468 bus_dma_tag_destroy(lesc->sc_dmat);
469 bus_dma_tag_destroy(lesc->sc_pdmat);
470 bus_release_resource(dev, SYS_RES_IRQ,
471 rman_get_rid(lesc->sc_ires), lesc->sc_ires);
472 bus_release_resource(dev, SYS_RES_IOPORT,
473 rman_get_rid(lesc->sc_rres), lesc->sc_rres);
480 le_pci_suspend(device_t dev)
482 struct le_pci_softc *lesc;
484 lesc = device_get_softc(dev);
486 lance_suspend(&lesc->sc_am79900.lsc);
492 le_pci_resume(device_t dev)
494 struct le_pci_softc *lesc;
496 lesc = device_get_softc(dev);
498 lance_resume(&lesc->sc_am79900.lsc);