1 /* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */
2 /* $FreeBSD: src/sys/dev/le/if_le_pci.c,v 1.4 2006/06/05 15:14:14 marius Exp $ */
6 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
11 * Simulation Facility, NASA Ames Research Center.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the NetBSD
24 * Foundation, Inc. and its contributors.
25 * 4. Neither the name of The NetBSD Foundation nor the names of its
26 * contributors may be used to endorse or promote products derived
27 * from this software without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGE.
43 * Copyright (c) 1992, 1993
44 * The Regents of the University of California. All rights reserved.
46 * This code is derived from software contributed to Berkeley by
47 * Ralph Campbell and Rick Macklem.
49 * Redistribution and use in source and binary forms, with or without
50 * modification, are permitted provided that the following conditions
52 * 1. Redistributions of source code must retain the above copyright
53 * notice, this list of conditions and the following disclaimer.
54 * 2. Redistributions in binary form must reproduce the above copyright
55 * notice, this list of conditions and the following disclaimer in the
56 * documentation and/or other materials provided with the distribution.
57 * 3. Neither the name of the University nor the names of its contributors
58 * may be used to endorse or promote products derived from this software
59 * without specific prior written permission.
61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
73 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
76 #include <sys/param.h>
77 #include <sys/systm.h>
79 #include <sys/endian.h>
80 #include <sys/kernel.h>
81 #include <sys/interrupt.h>
83 #include <sys/module.h>
84 #include <sys/resource.h>
86 #include <sys/socket.h>
88 #include <net/ethernet.h>
90 #include <net/if_media.h>
91 #include <net/if_arp.h>
93 #include <bus/pci/pcireg.h>
94 #include <bus/pci/pcivar.h>
96 #include <dev/netif/lnc/lancereg.h>
97 #include <dev/netif/lnc/lancevar.h>
98 #include <dev/netif/lnc/am79900var.h>
100 #define AMD_VENDOR 0x1022
101 #define AMD_PCNET_PCI 0x2000
102 #define AMD_PCNET_HOME 0x2001
103 #define PCNET_MEMSIZE (32*1024)
104 #define PCNET_PCI_RDP 0x10
105 #define PCNET_PCI_RAP 0x12
106 #define PCNET_PCI_BDP 0x16
108 #define LNC_PROBE_PRIORITY -100
110 struct le_pci_softc {
111 struct am79900_softc sc_am79900; /* glue to MI code */
114 struct resource *sc_rres;
115 bus_space_tag_t sc_regt;
116 bus_space_handle_t sc_regh;
119 struct resource *sc_ires;
122 bus_dma_tag_t sc_pdmat;
123 bus_dma_tag_t sc_dmat;
124 bus_dmamap_t sc_dmam;
127 static device_probe_t le_pci_probe;
128 static device_attach_t le_pci_attach;
129 static device_detach_t le_pci_detach;
130 static device_resume_t le_pci_resume;
131 static device_suspend_t le_pci_suspend;
133 static device_method_t le_pci_methods[] = {
134 /* Device interface */
135 DEVMETHOD(device_probe, le_pci_probe),
136 DEVMETHOD(device_attach, le_pci_attach),
137 DEVMETHOD(device_detach, le_pci_detach),
138 /* We can just use the suspend method here. */
139 DEVMETHOD(device_shutdown, le_pci_suspend),
140 DEVMETHOD(device_suspend, le_pci_suspend),
141 DEVMETHOD(device_resume, le_pci_resume),
146 DEFINE_CLASS_0(lnc, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc));
147 DRIVER_MODULE(lnc, pci, le_pci_driver, le_devclass, NULL, NULL);
148 MODULE_DEPEND(lnc, ether, 1, 1, 1);
150 static const int le_home_supmedia[] = {
151 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0)
154 static const int le_pci_supmedia[] = {
155 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
156 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0),
157 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
158 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0),
159 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0),
160 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0)
163 static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t);
164 static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t);
165 static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t);
166 static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t);
167 static int le_pci_mediachange(struct lance_softc *);
168 static void le_pci_hwreset(struct lance_softc *);
169 static bus_dmamap_callback_t le_pci_dma_callback;
172 le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val)
174 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
176 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port);
177 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2,
178 BUS_SPACE_BARRIER_WRITE);
179 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_BDP, val);
183 le_pci_rdbcr(struct lance_softc *sc, uint16_t port)
185 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
187 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port);
188 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2,
189 BUS_SPACE_BARRIER_WRITE);
190 return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_BDP));
194 le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
196 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
198 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port);
199 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2,
200 BUS_SPACE_BARRIER_WRITE);
201 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RDP, val);
205 le_pci_rdcsr(struct lance_softc *sc, uint16_t port)
207 struct le_pci_softc *lesc = (struct le_pci_softc *)sc;
209 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port);
210 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2,
211 BUS_SPACE_BARRIER_WRITE);
212 return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RDP));
216 le_pci_mediachange(struct lance_softc *sc)
218 struct ifmedia *ifm = &sc->sc_media;
221 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
224 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1)
225 le_pci_wrbcr(sc, LE_BCR49,
226 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1);
227 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
228 le_pci_wrbcr(sc, LE_BCR2,
229 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL);
231 le_pci_wrbcr(sc, LE_BCR2,
232 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL);
234 reg = le_pci_rdcsr(sc, LE_CSR15);
235 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK);
236 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T)
237 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T);
239 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI);
240 le_pci_wrcsr(sc, LE_CSR15, reg);
243 reg = le_pci_rdbcr(sc, LE_BCR9);
244 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) {
247 * Allow FDX on AUI only if explicitly chosen,
248 * not in autoselect mode.
250 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5)
256 le_pci_wrbcr(sc, LE_BCR9, reg);
262 le_pci_hwreset(struct lance_softc *sc)
266 * Chip is stopped. Set software style to PCnet-PCI (32-bit).
267 * Actually, am79900.c implements ILACC support (hence its
268 * name) but unfortunately VMware does not. As far as this
269 * driver is concerned that should not make a difference
270 * though, as the settings used have the same meaning for
271 * both, ILACC and PCnet-PCI (note that there would be a
272 * difference for the ADD_FCS/NO_FCS bit if used).
274 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2);
278 le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
280 struct lance_softc *sc = (struct lance_softc *)xsc;
284 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
285 sc->sc_addr = segs[0].ds_addr;
289 le_pci_probe(device_t dev)
292 if (pci_get_vendor(dev) != AMD_VENDOR)
295 switch (pci_get_device(dev)) {
297 device_set_desc(dev, "AMD PCnet-PCI");
298 /* Let pcn(4) win. */
299 return (LNC_PROBE_PRIORITY);
301 device_set_desc(dev, "AMD PCnet-Home");
302 /* Let pcn(4) win. */
303 return (LNC_PROBE_PRIORITY);
310 le_pci_attach(device_t dev)
312 struct le_pci_softc *lesc;
313 struct lance_softc *sc;
316 lesc = device_get_softc(dev);
317 sc = &lesc->sc_am79900.lsc;
319 pci_enable_busmaster(dev);
320 pci_enable_io(dev, PCIM_CMD_PORTEN);
322 lesc->sc_rrid = PCIR_BAR(0);
323 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
324 &lesc->sc_rrid, RF_ACTIVE);
325 if (lesc->sc_rres == NULL) {
326 device_printf(dev, "cannot allocate registers\n");
330 lesc->sc_regt = rman_get_bustag(lesc->sc_rres);
331 lesc->sc_regh = rman_get_bushandle(lesc->sc_rres);
334 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
335 &lesc->sc_irid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
336 device_printf(dev, "cannot allocate interrupt\n");
341 error = bus_dma_tag_create(
343 1, 0, /* alignment, boundary */
344 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
345 BUS_SPACE_MAXADDR, /* highaddr */
346 NULL, NULL, /* filter, filterarg */
347 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
349 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
350 BUS_DMA_WAITOK, /* flags */
353 device_printf(dev, "cannot allocate parent DMA tag\n");
357 sc->sc_memsize = PCNET_MEMSIZE;
359 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte
360 * aligned and the ring descriptors must be 16-byte aligned when using
361 * a 32-bit software style.
363 error = bus_dma_tag_create(
364 lesc->sc_pdmat, /* parent */
365 16, 0, /* alignment, boundary */
366 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
367 BUS_SPACE_MAXADDR, /* highaddr */
368 NULL, NULL, /* filter, filterarg */
369 sc->sc_memsize, /* maxsize */
371 sc->sc_memsize, /* maxsegsize */
372 BUS_DMA_WAITOK, /* flags */
375 device_printf(dev, "cannot allocate buffer DMA tag\n");
379 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
380 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
382 device_printf(dev, "cannot allocate DMA buffer memory\n");
387 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
388 sc->sc_memsize, le_pci_dma_callback, sc, 0);
389 if (error != 0 || sc->sc_addr == 0) {
390 device_printf(dev, "cannot load DMA buffer map\n");
394 sc->sc_flags = LE_BSWAP;
397 sc->sc_mediastatus = NULL;
398 switch (pci_get_device(dev)) {
400 sc->sc_mediachange = le_pci_mediachange;
401 sc->sc_supmedia = le_home_supmedia;
402 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int);
403 sc->sc_defaultmedia = le_home_supmedia[0];
406 sc->sc_mediachange = le_pci_mediachange;
407 sc->sc_supmedia = le_pci_supmedia;
408 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int);
409 sc->sc_defaultmedia = le_pci_supmedia[0];
413 * Extract the physical MAC address from the ROM.
415 for (i = 0; i < sizeof(sc->sc_enaddr); i++)
417 bus_space_read_1(lesc->sc_regt, lesc->sc_regh, i);
419 sc->sc_copytodesc = lance_copytobuf_contig;
420 sc->sc_copyfromdesc = lance_copyfrombuf_contig;
421 sc->sc_copytobuf = lance_copytobuf_contig;
422 sc->sc_copyfrombuf = lance_copyfrombuf_contig;
423 sc->sc_zerobuf = lance_zerobuf_contig;
425 sc->sc_rdcsr = le_pci_rdcsr;
426 sc->sc_wrcsr = le_pci_wrcsr;
427 sc->sc_hwreset = le_pci_hwreset;
428 sc->sc_hwinit = NULL;
429 sc->sc_hwintr = NULL;
430 sc->sc_nocarrier = NULL;
432 error = am79900_config(&lesc->sc_am79900, device_get_name(dev),
433 device_get_unit(dev));
435 device_printf(dev, "cannot attach Am79900\n");
439 error = bus_setup_intr(dev, lesc->sc_ires, INTR_MPSAFE,
440 am79900_intr, sc, &lesc->sc_ih, sc->ifp->if_serializer);
442 device_printf(dev, "cannot set up interrupt\n");
446 sc->ifp->if_cpuid = rman_get_cpuid(lesc->sc_ires);
447 KKASSERT(sc->ifp->if_cpuid >= 0 && sc->ifp->if_cpuid < ncpus);
452 am79900_detach(&lesc->sc_am79900);
454 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
456 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
458 bus_dma_tag_destroy(lesc->sc_dmat);
460 bus_dma_tag_destroy(lesc->sc_pdmat);
462 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires);
464 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres);
470 le_pci_detach(device_t dev)
472 struct le_pci_softc *lesc;
473 struct lance_softc *sc;
475 lesc = device_get_softc(dev);
476 sc = &lesc->sc_am79900.lsc;
478 if (device_is_attached(dev)) {
479 lwkt_serialize_enter(sc->ifp->if_serializer);
481 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih);
482 lwkt_serialize_exit(sc->ifp->if_serializer);
484 am79900_detach(&lesc->sc_am79900);
488 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires);
490 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres);
492 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
493 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
496 bus_dma_tag_destroy(lesc->sc_dmat);
498 bus_dma_tag_destroy(lesc->sc_pdmat);
504 le_pci_suspend(device_t dev)
506 struct le_pci_softc *lesc;
508 lesc = device_get_softc(dev);
510 lance_suspend(&lesc->sc_am79900.lsc);
516 le_pci_resume(device_t dev)
518 struct le_pci_softc *lesc;
520 lesc = device_get_softc(dev);
522 lance_resume(&lesc->sc_am79900.lsc);