2 * Copyright (c) 2003 Stuart Walsh<stu@ipng.org.uk>
3 * and Duncan Barclay<dmlb@dmlb.org>
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS 'AS IS' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
34 #include <sys/endian.h>
35 #include <sys/kernel.h>
36 #include <sys/malloc.h>
38 #include <sys/module.h>
40 #include <sys/socket.h>
41 #include <sys/sockio.h>
42 #include <sys/sysctl.h>
46 #include <net/if_var.h>
47 #include <net/ethernet.h>
48 #include <net/if_dl.h>
49 #include <net/if_media.h>
50 #include <net/if_types.h>
51 #include <net/if_vlan_var.h>
53 #include <dev/mii/mii.h>
54 #include <dev/mii/miivar.h>
56 #include <dev/pci/pcireg.h>
57 #include <dev/pci/pcivar.h>
59 #include <machine/bus.h>
61 #include <dev/bfe/if_bfereg.h>
63 MODULE_DEPEND(bfe, pci, 1, 1, 1);
64 MODULE_DEPEND(bfe, ether, 1, 1, 1);
65 MODULE_DEPEND(bfe, miibus, 1, 1, 1);
67 /* "device miibus" required. See GENERIC if you get errors here. */
68 #include "miibus_if.h"
70 #define BFE_DEVDESC_MAX 64 /* Maximum device description length */
72 static struct bfe_type bfe_devs[] = {
73 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401,
74 "Broadcom BCM4401 Fast Ethernet" },
75 { BCOM_VENDORID, BCOM_DEVICEID_BCM4401B0,
76 "Broadcom BCM4401-B0 Fast Ethernet" },
80 static int bfe_probe (device_t);
81 static int bfe_attach (device_t);
82 static int bfe_detach (device_t);
83 static int bfe_suspend (device_t);
84 static int bfe_resume (device_t);
85 static void bfe_release_resources (struct bfe_softc *);
86 static void bfe_intr (void *);
87 static int bfe_encap (struct bfe_softc *, struct mbuf **);
88 static void bfe_start (struct ifnet *);
89 static void bfe_start_locked (struct ifnet *);
90 static int bfe_ioctl (struct ifnet *, u_long, caddr_t);
91 static void bfe_init (void *);
92 static void bfe_init_locked (void *);
93 static void bfe_stop (struct bfe_softc *);
94 static void bfe_watchdog (struct bfe_softc *);
95 static int bfe_shutdown (device_t);
96 static void bfe_tick (void *);
97 static void bfe_txeof (struct bfe_softc *);
98 static void bfe_rxeof (struct bfe_softc *);
99 static void bfe_set_rx_mode (struct bfe_softc *);
100 static int bfe_list_rx_init (struct bfe_softc *);
101 static void bfe_list_tx_init (struct bfe_softc *);
102 static void bfe_discard_buf (struct bfe_softc *, int);
103 static int bfe_list_newbuf (struct bfe_softc *, int);
104 static void bfe_rx_ring_free (struct bfe_softc *);
106 static void bfe_pci_setup (struct bfe_softc *, u_int32_t);
107 static int bfe_ifmedia_upd (struct ifnet *);
108 static void bfe_ifmedia_sts (struct ifnet *, struct ifmediareq *);
109 static int bfe_miibus_readreg (device_t, int, int);
110 static int bfe_miibus_writereg (device_t, int, int, int);
111 static void bfe_miibus_statchg (device_t);
112 static int bfe_wait_bit (struct bfe_softc *, u_int32_t, u_int32_t,
114 static void bfe_get_config (struct bfe_softc *sc);
115 static void bfe_read_eeprom (struct bfe_softc *, u_int8_t *);
116 static void bfe_stats_update (struct bfe_softc *);
117 static void bfe_clear_stats (struct bfe_softc *);
118 static int bfe_readphy (struct bfe_softc *, u_int32_t, u_int32_t*);
119 static int bfe_writephy (struct bfe_softc *, u_int32_t, u_int32_t);
120 static int bfe_resetphy (struct bfe_softc *);
121 static int bfe_setupphy (struct bfe_softc *);
122 static void bfe_chip_reset (struct bfe_softc *);
123 static void bfe_chip_halt (struct bfe_softc *);
124 static void bfe_core_reset (struct bfe_softc *);
125 static void bfe_core_disable (struct bfe_softc *);
126 static int bfe_dma_alloc (struct bfe_softc *);
127 static void bfe_dma_free (struct bfe_softc *sc);
128 static void bfe_dma_map (void *, bus_dma_segment_t *, int, int);
129 static void bfe_cam_write (struct bfe_softc *, u_char *, int);
130 static int sysctl_bfe_stats (SYSCTL_HANDLER_ARGS);
132 static device_method_t bfe_methods[] = {
133 /* Device interface */
134 DEVMETHOD(device_probe, bfe_probe),
135 DEVMETHOD(device_attach, bfe_attach),
136 DEVMETHOD(device_detach, bfe_detach),
137 DEVMETHOD(device_shutdown, bfe_shutdown),
138 DEVMETHOD(device_suspend, bfe_suspend),
139 DEVMETHOD(device_resume, bfe_resume),
142 DEVMETHOD(miibus_readreg, bfe_miibus_readreg),
143 DEVMETHOD(miibus_writereg, bfe_miibus_writereg),
144 DEVMETHOD(miibus_statchg, bfe_miibus_statchg),
149 static driver_t bfe_driver = {
152 sizeof(struct bfe_softc)
155 static devclass_t bfe_devclass;
157 DRIVER_MODULE(bfe, pci, bfe_driver, bfe_devclass, 0, 0);
158 DRIVER_MODULE(miibus, bfe, miibus_driver, miibus_devclass, 0, 0);
161 * Probe for a Broadcom 4401 chip.
164 bfe_probe(device_t dev)
170 while (t->bfe_name != NULL) {
171 if (pci_get_vendor(dev) == t->bfe_vid &&
172 pci_get_device(dev) == t->bfe_did) {
173 device_set_desc(dev, t->bfe_name);
174 return (BUS_PROBE_DEFAULT);
182 struct bfe_dmamap_arg {
183 bus_addr_t bfe_busaddr;
187 bfe_dma_alloc(struct bfe_softc *sc)
189 struct bfe_dmamap_arg ctx;
190 struct bfe_rx_data *rd;
191 struct bfe_tx_data *td;
195 * parent tag. Apparently the chip cannot handle any DMA address
198 error = bus_dma_tag_create(bus_get_dma_tag(sc->bfe_dev), /* parent */
199 1, 0, /* alignment, boundary */
200 BFE_DMA_MAXADDR, /* lowaddr */
201 BUS_SPACE_MAXADDR, /* highaddr */
202 NULL, NULL, /* filter, filterarg */
203 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
205 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
207 NULL, NULL, /* lockfunc, lockarg */
208 &sc->bfe_parent_tag);
210 device_printf(sc->bfe_dev, "cannot create parent DMA tag.\n");
214 /* Create tag for Tx ring. */
215 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */
216 BFE_TX_RING_ALIGN, 0, /* alignment, boundary */
217 BUS_SPACE_MAXADDR, /* lowaddr */
218 BUS_SPACE_MAXADDR, /* highaddr */
219 NULL, NULL, /* filter, filterarg */
220 BFE_TX_LIST_SIZE, /* maxsize */
222 BFE_TX_LIST_SIZE, /* maxsegsize */
224 NULL, NULL, /* lockfunc, lockarg */
227 device_printf(sc->bfe_dev, "cannot create Tx ring DMA tag.\n");
231 /* Create tag for Rx ring. */
232 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */
233 BFE_RX_RING_ALIGN, 0, /* alignment, boundary */
234 BUS_SPACE_MAXADDR, /* lowaddr */
235 BUS_SPACE_MAXADDR, /* highaddr */
236 NULL, NULL, /* filter, filterarg */
237 BFE_RX_LIST_SIZE, /* maxsize */
239 BFE_RX_LIST_SIZE, /* maxsegsize */
241 NULL, NULL, /* lockfunc, lockarg */
244 device_printf(sc->bfe_dev, "cannot create Rx ring DMA tag.\n");
248 /* Create tag for Tx buffers. */
249 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */
250 1, 0, /* alignment, boundary */
251 BUS_SPACE_MAXADDR, /* lowaddr */
252 BUS_SPACE_MAXADDR, /* highaddr */
253 NULL, NULL, /* filter, filterarg */
254 MCLBYTES * BFE_MAXTXSEGS, /* maxsize */
255 BFE_MAXTXSEGS, /* nsegments */
256 MCLBYTES, /* maxsegsize */
258 NULL, NULL, /* lockfunc, lockarg */
259 &sc->bfe_txmbuf_tag);
261 device_printf(sc->bfe_dev,
262 "cannot create Tx buffer DMA tag.\n");
266 /* Create tag for Rx buffers. */
267 error = bus_dma_tag_create(sc->bfe_parent_tag, /* parent */
268 1, 0, /* alignment, boundary */
269 BUS_SPACE_MAXADDR, /* lowaddr */
270 BUS_SPACE_MAXADDR, /* highaddr */
271 NULL, NULL, /* filter, filterarg */
272 MCLBYTES, /* maxsize */
274 MCLBYTES, /* maxsegsize */
276 NULL, NULL, /* lockfunc, lockarg */
277 &sc->bfe_rxmbuf_tag);
279 device_printf(sc->bfe_dev,
280 "cannot create Rx buffer DMA tag.\n");
284 /* Allocate DMA'able memory and load DMA map. */
285 error = bus_dmamem_alloc(sc->bfe_tx_tag, (void *)&sc->bfe_tx_list,
286 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_tx_map);
288 device_printf(sc->bfe_dev,
289 "cannot allocate DMA'able memory for Tx ring.\n");
293 error = bus_dmamap_load(sc->bfe_tx_tag, sc->bfe_tx_map,
294 sc->bfe_tx_list, BFE_TX_LIST_SIZE, bfe_dma_map, &ctx,
296 if (error != 0 || ctx.bfe_busaddr == 0) {
297 device_printf(sc->bfe_dev,
298 "cannot load DMA'able memory for Tx ring.\n");
301 sc->bfe_tx_dma = BFE_ADDR_LO(ctx.bfe_busaddr);
303 error = bus_dmamem_alloc(sc->bfe_rx_tag, (void *)&sc->bfe_rx_list,
304 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->bfe_rx_map);
306 device_printf(sc->bfe_dev,
307 "cannot allocate DMA'able memory for Rx ring.\n");
311 error = bus_dmamap_load(sc->bfe_rx_tag, sc->bfe_rx_map,
312 sc->bfe_rx_list, BFE_RX_LIST_SIZE, bfe_dma_map, &ctx,
314 if (error != 0 || ctx.bfe_busaddr == 0) {
315 device_printf(sc->bfe_dev,
316 "cannot load DMA'able memory for Rx ring.\n");
319 sc->bfe_rx_dma = BFE_ADDR_LO(ctx.bfe_busaddr);
321 /* Create DMA maps for Tx buffers. */
322 for (i = 0; i < BFE_TX_LIST_CNT; i++) {
323 td = &sc->bfe_tx_ring[i];
326 error = bus_dmamap_create(sc->bfe_txmbuf_tag, 0, &td->bfe_map);
328 device_printf(sc->bfe_dev,
329 "cannot create DMA map for Tx.\n");
334 /* Create spare DMA map for Rx buffers. */
335 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &sc->bfe_rx_sparemap);
337 device_printf(sc->bfe_dev, "cannot create spare DMA map for Rx.\n");
340 /* Create DMA maps for Rx buffers. */
341 for (i = 0; i < BFE_RX_LIST_CNT; i++) {
342 rd = &sc->bfe_rx_ring[i];
346 error = bus_dmamap_create(sc->bfe_rxmbuf_tag, 0, &rd->bfe_map);
348 device_printf(sc->bfe_dev,
349 "cannot create DMA map for Rx.\n");
359 bfe_dma_free(struct bfe_softc *sc)
361 struct bfe_tx_data *td;
362 struct bfe_rx_data *rd;
366 if (sc->bfe_tx_tag != NULL) {
367 if (sc->bfe_tx_dma != 0)
368 bus_dmamap_unload(sc->bfe_tx_tag, sc->bfe_tx_map);
369 if (sc->bfe_tx_list != NULL)
370 bus_dmamem_free(sc->bfe_tx_tag, sc->bfe_tx_list,
373 sc->bfe_tx_list = NULL;
374 bus_dma_tag_destroy(sc->bfe_tx_tag);
375 sc->bfe_tx_tag = NULL;
379 if (sc->bfe_rx_tag != NULL) {
380 if (sc->bfe_rx_dma != 0)
381 bus_dmamap_unload(sc->bfe_rx_tag, sc->bfe_rx_map);
382 if (sc->bfe_rx_list != NULL)
383 bus_dmamem_free(sc->bfe_rx_tag, sc->bfe_rx_list,
386 sc->bfe_rx_list = NULL;
387 bus_dma_tag_destroy(sc->bfe_rx_tag);
388 sc->bfe_rx_tag = NULL;
392 if (sc->bfe_txmbuf_tag != NULL) {
393 for (i = 0; i < BFE_TX_LIST_CNT; i++) {
394 td = &sc->bfe_tx_ring[i];
395 if (td->bfe_map != NULL) {
396 bus_dmamap_destroy(sc->bfe_txmbuf_tag,
401 bus_dma_tag_destroy(sc->bfe_txmbuf_tag);
402 sc->bfe_txmbuf_tag = NULL;
406 if (sc->bfe_rxmbuf_tag != NULL) {
407 for (i = 0; i < BFE_RX_LIST_CNT; i++) {
408 rd = &sc->bfe_rx_ring[i];
409 if (rd->bfe_map != NULL) {
410 bus_dmamap_destroy(sc->bfe_rxmbuf_tag,
415 if (sc->bfe_rx_sparemap != NULL) {
416 bus_dmamap_destroy(sc->bfe_rxmbuf_tag,
417 sc->bfe_rx_sparemap);
418 sc->bfe_rx_sparemap = NULL;
420 bus_dma_tag_destroy(sc->bfe_rxmbuf_tag);
421 sc->bfe_rxmbuf_tag = NULL;
424 if (sc->bfe_parent_tag != NULL) {
425 bus_dma_tag_destroy(sc->bfe_parent_tag);
426 sc->bfe_parent_tag = NULL;
431 bfe_attach(device_t dev)
433 struct ifnet *ifp = NULL;
434 struct bfe_softc *sc;
437 sc = device_get_softc(dev);
438 mtx_init(&sc->bfe_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
440 callout_init_mtx(&sc->bfe_stat_co, &sc->bfe_mtx, 0);
445 * Map control/status registers.
447 pci_enable_busmaster(dev);
450 sc->bfe_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
452 if (sc->bfe_res == NULL) {
453 device_printf(dev, "couldn't map memory\n");
458 /* Allocate interrupt */
461 sc->bfe_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
462 RF_SHAREABLE | RF_ACTIVE);
463 if (sc->bfe_irq == NULL) {
464 device_printf(dev, "couldn't map interrupt\n");
469 if (bfe_dma_alloc(sc) != 0) {
470 device_printf(dev, "failed to allocate DMA resources\n");
475 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
476 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
477 "stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0, sysctl_bfe_stats,
480 /* Set up ifnet structure */
481 ifp = sc->bfe_ifp = if_alloc(IFT_ETHER);
483 device_printf(dev, "failed to if_alloc()\n");
488 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
489 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
490 ifp->if_ioctl = bfe_ioctl;
491 ifp->if_start = bfe_start;
492 ifp->if_init = bfe_init;
493 IFQ_SET_MAXLEN(&ifp->if_snd, BFE_TX_QLEN);
494 ifp->if_snd.ifq_drv_maxlen = BFE_TX_QLEN;
495 IFQ_SET_READY(&ifp->if_snd);
499 /* Reset the chip and turn on the PHY */
504 error = mii_attach(dev, &sc->bfe_miibus, ifp, bfe_ifmedia_upd,
505 bfe_ifmedia_sts, BMSR_DEFCAPMASK, sc->bfe_phyaddr, MII_OFFSET_ANY,
508 device_printf(dev, "attaching PHYs failed\n");
512 ether_ifattach(ifp, sc->bfe_enaddr);
515 * Tell the upper layer(s) we support long frames.
517 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
518 ifp->if_capabilities |= IFCAP_VLAN_MTU;
519 ifp->if_capenable |= IFCAP_VLAN_MTU;
522 * Hook interrupt last to avoid having to lock softc
524 error = bus_setup_intr(dev, sc->bfe_irq, INTR_TYPE_NET | INTR_MPSAFE,
525 NULL, bfe_intr, sc, &sc->bfe_intrhand);
528 device_printf(dev, "couldn't set up irq\n");
538 bfe_detach(device_t dev)
540 struct bfe_softc *sc;
543 sc = device_get_softc(dev);
547 if (device_is_attached(dev)) {
549 sc->bfe_flags |= BFE_FLAG_DETACH;
552 callout_drain(&sc->bfe_stat_co);
561 bus_generic_detach(dev);
562 if (sc->bfe_miibus != NULL)
563 device_delete_child(dev, sc->bfe_miibus);
565 bfe_release_resources(sc);
567 mtx_destroy(&sc->bfe_mtx);
573 * Stop all chip I/O so that the kernel's probe routines don't
574 * get confused by errant DMAs when rebooting.
577 bfe_shutdown(device_t dev)
579 struct bfe_softc *sc;
581 sc = device_get_softc(dev);
591 bfe_suspend(device_t dev)
593 struct bfe_softc *sc;
595 sc = device_get_softc(dev);
604 bfe_resume(device_t dev)
606 struct bfe_softc *sc;
609 sc = device_get_softc(dev);
613 if (ifp->if_flags & IFF_UP) {
615 if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
616 !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
617 bfe_start_locked(ifp);
625 bfe_miibus_readreg(device_t dev, int phy, int reg)
627 struct bfe_softc *sc;
630 sc = device_get_softc(dev);
631 bfe_readphy(sc, reg, &ret);
637 bfe_miibus_writereg(device_t dev, int phy, int reg, int val)
639 struct bfe_softc *sc;
641 sc = device_get_softc(dev);
642 bfe_writephy(sc, reg, val);
648 bfe_miibus_statchg(device_t dev)
650 struct bfe_softc *sc;
651 struct mii_data *mii;
654 sc = device_get_softc(dev);
655 mii = device_get_softc(sc->bfe_miibus);
657 sc->bfe_flags &= ~BFE_FLAG_LINK;
658 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
659 (IFM_ACTIVE | IFM_AVALID)) {
660 switch (IFM_SUBTYPE(mii->mii_media_active)) {
663 sc->bfe_flags |= BFE_FLAG_LINK;
670 /* XXX Should stop Rx/Tx engine prior to touching MAC. */
671 val = CSR_READ_4(sc, BFE_TX_CTRL);
672 val &= ~BFE_TX_DUPLEX;
673 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
674 val |= BFE_TX_DUPLEX;
677 flow = CSR_READ_4(sc, BFE_RXCONF);
678 flow &= ~BFE_RXCONF_FLOW;
679 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) &
680 IFM_ETH_RXPAUSE) != 0)
681 flow |= BFE_RXCONF_FLOW;
682 CSR_WRITE_4(sc, BFE_RXCONF, flow);
684 * It seems that the hardware has Tx pause issues
685 * so enable only Rx pause.
687 flow = CSR_READ_4(sc, BFE_MAC_FLOW);
688 flow &= ~BFE_FLOW_PAUSE_ENAB;
689 CSR_WRITE_4(sc, BFE_MAC_FLOW, flow);
692 CSR_WRITE_4(sc, BFE_TX_CTRL, val);
696 bfe_tx_ring_free(struct bfe_softc *sc)
700 for(i = 0; i < BFE_TX_LIST_CNT; i++) {
701 if (sc->bfe_tx_ring[i].bfe_mbuf != NULL) {
702 bus_dmamap_sync(sc->bfe_txmbuf_tag,
703 sc->bfe_tx_ring[i].bfe_map, BUS_DMASYNC_POSTWRITE);
704 bus_dmamap_unload(sc->bfe_txmbuf_tag,
705 sc->bfe_tx_ring[i].bfe_map);
706 m_freem(sc->bfe_tx_ring[i].bfe_mbuf);
707 sc->bfe_tx_ring[i].bfe_mbuf = NULL;
710 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE);
711 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map,
712 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
716 bfe_rx_ring_free(struct bfe_softc *sc)
720 for (i = 0; i < BFE_RX_LIST_CNT; i++) {
721 if (sc->bfe_rx_ring[i].bfe_mbuf != NULL) {
722 bus_dmamap_sync(sc->bfe_rxmbuf_tag,
723 sc->bfe_rx_ring[i].bfe_map, BUS_DMASYNC_POSTREAD);
724 bus_dmamap_unload(sc->bfe_rxmbuf_tag,
725 sc->bfe_rx_ring[i].bfe_map);
726 m_freem(sc->bfe_rx_ring[i].bfe_mbuf);
727 sc->bfe_rx_ring[i].bfe_mbuf = NULL;
730 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE);
731 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map,
732 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
736 bfe_list_rx_init(struct bfe_softc *sc)
738 struct bfe_rx_data *rd;
741 sc->bfe_rx_prod = sc->bfe_rx_cons = 0;
742 bzero(sc->bfe_rx_list, BFE_RX_LIST_SIZE);
743 for (i = 0; i < BFE_RX_LIST_CNT; i++) {
744 rd = &sc->bfe_rx_ring[i];
747 if (bfe_list_newbuf(sc, i) != 0)
751 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map,
752 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
753 CSR_WRITE_4(sc, BFE_DMARX_PTR, (i * sizeof(struct bfe_desc)));
759 bfe_list_tx_init(struct bfe_softc *sc)
763 sc->bfe_tx_cnt = sc->bfe_tx_prod = sc->bfe_tx_cons = 0;
764 bzero(sc->bfe_tx_list, BFE_TX_LIST_SIZE);
765 for (i = 0; i < BFE_TX_LIST_CNT; i++)
766 sc->bfe_tx_ring[i].bfe_mbuf = NULL;
768 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map,
769 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
773 bfe_discard_buf(struct bfe_softc *sc, int c)
775 struct bfe_rx_data *r;
778 r = &sc->bfe_rx_ring[c];
779 d = &sc->bfe_rx_list[c];
780 d->bfe_ctrl = htole32(r->bfe_ctrl);
784 bfe_list_newbuf(struct bfe_softc *sc, int c)
786 struct bfe_rxheader *rx_header;
788 struct bfe_rx_data *r;
790 bus_dma_segment_t segs[1];
795 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
796 m->m_len = m->m_pkthdr.len = MCLBYTES;
798 if (bus_dmamap_load_mbuf_sg(sc->bfe_rxmbuf_tag, sc->bfe_rx_sparemap,
799 m, segs, &nsegs, 0) != 0) {
804 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
805 r = &sc->bfe_rx_ring[c];
806 if (r->bfe_mbuf != NULL) {
807 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map,
808 BUS_DMASYNC_POSTREAD);
809 bus_dmamap_unload(sc->bfe_rxmbuf_tag, r->bfe_map);
812 r->bfe_map = sc->bfe_rx_sparemap;
813 sc->bfe_rx_sparemap = map;
816 rx_header = mtod(m, struct bfe_rxheader *);
818 rx_header->flags = 0;
819 bus_dmamap_sync(sc->bfe_rxmbuf_tag, r->bfe_map, BUS_DMASYNC_PREREAD);
821 ctrl = segs[0].ds_len & BFE_DESC_LEN;
822 KASSERT(ctrl > ETHER_MAX_LEN + 32, ("%s: buffer size too small(%d)!",
824 if (c == BFE_RX_LIST_CNT - 1)
825 ctrl |= BFE_DESC_EOT;
828 d = &sc->bfe_rx_list[c];
829 d->bfe_ctrl = htole32(ctrl);
830 /* The chip needs all addresses to be added to BFE_PCI_DMA. */
831 d->bfe_addr = htole32(BFE_ADDR_LO(segs[0].ds_addr) + BFE_PCI_DMA);
837 bfe_get_config(struct bfe_softc *sc)
839 u_int8_t eeprom[128];
841 bfe_read_eeprom(sc, eeprom);
843 sc->bfe_enaddr[0] = eeprom[79];
844 sc->bfe_enaddr[1] = eeprom[78];
845 sc->bfe_enaddr[2] = eeprom[81];
846 sc->bfe_enaddr[3] = eeprom[80];
847 sc->bfe_enaddr[4] = eeprom[83];
848 sc->bfe_enaddr[5] = eeprom[82];
850 sc->bfe_phyaddr = eeprom[90] & 0x1f;
851 sc->bfe_mdc_port = (eeprom[90] >> 14) & 0x1;
853 sc->bfe_core_unit = 0;
854 sc->bfe_dma_offset = BFE_PCI_DMA;
858 bfe_pci_setup(struct bfe_softc *sc, u_int32_t cores)
860 u_int32_t bar_orig, pci_rev, val;
862 bar_orig = pci_read_config(sc->bfe_dev, BFE_BAR0_WIN, 4);
863 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, BFE_REG_PCI, 4);
864 pci_rev = CSR_READ_4(sc, BFE_SBIDHIGH) & BFE_RC_MASK;
866 val = CSR_READ_4(sc, BFE_SBINTVEC);
868 CSR_WRITE_4(sc, BFE_SBINTVEC, val);
870 val = CSR_READ_4(sc, BFE_SSB_PCI_TRANS_2);
871 val |= BFE_SSB_PCI_PREF | BFE_SSB_PCI_BURST;
872 CSR_WRITE_4(sc, BFE_SSB_PCI_TRANS_2, val);
874 pci_write_config(sc->bfe_dev, BFE_BAR0_WIN, bar_orig, 4);
878 bfe_clear_stats(struct bfe_softc *sc)
884 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ);
885 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4)
887 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4)
892 bfe_resetphy(struct bfe_softc *sc)
896 bfe_writephy(sc, 0, BMCR_RESET);
898 bfe_readphy(sc, 0, &val);
899 if (val & BMCR_RESET) {
900 device_printf(sc->bfe_dev, "PHY Reset would not complete.\n");
907 bfe_chip_halt(struct bfe_softc *sc)
910 /* disable interrupts - not that it actually does..*/
911 CSR_WRITE_4(sc, BFE_IMASK, 0);
912 CSR_READ_4(sc, BFE_IMASK);
914 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE);
915 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 200, 1);
917 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0);
918 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0);
923 bfe_chip_reset(struct bfe_softc *sc)
929 /* Set the interrupt vector for the enet core */
930 bfe_pci_setup(sc, BFE_INTVEC_ENET0);
933 val = CSR_READ_4(sc, BFE_SBTMSLOW) &
934 (BFE_RESET | BFE_REJECT | BFE_CLOCK);
935 if (val == BFE_CLOCK) {
936 /* It is, so shut it down */
937 CSR_WRITE_4(sc, BFE_RCV_LAZY, 0);
938 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE);
939 bfe_wait_bit(sc, BFE_ENET_CTRL, BFE_ENET_DISABLE, 100, 1);
940 CSR_WRITE_4(sc, BFE_DMATX_CTRL, 0);
941 if (CSR_READ_4(sc, BFE_DMARX_STAT) & BFE_STAT_EMASK)
942 bfe_wait_bit(sc, BFE_DMARX_STAT, BFE_STAT_SIDLE,
944 CSR_WRITE_4(sc, BFE_DMARX_CTRL, 0);
951 * We want the phy registers to be accessible even when
952 * the driver is "downed" so initialize MDC preamble, frequency,
953 * and whether internal or external phy here.
956 /* 4402 has 62.5Mhz SB clock and internal phy */
957 CSR_WRITE_4(sc, BFE_MDIO_CTRL, 0x8d);
959 /* Internal or external PHY? */
960 val = CSR_READ_4(sc, BFE_DEVCTRL);
961 if (!(val & BFE_IPP))
962 CSR_WRITE_4(sc, BFE_ENET_CTRL, BFE_ENET_EPSEL);
963 else if (CSR_READ_4(sc, BFE_DEVCTRL) & BFE_EPR) {
964 BFE_AND(sc, BFE_DEVCTRL, ~BFE_EPR);
968 /* Enable CRC32 generation and set proper LED modes */
969 BFE_OR(sc, BFE_MAC_CTRL, BFE_CTRL_CRC32_ENAB | BFE_CTRL_LED);
971 /* Reset or clear powerdown control bit */
972 BFE_AND(sc, BFE_MAC_CTRL, ~BFE_CTRL_PDOWN);
974 CSR_WRITE_4(sc, BFE_RCV_LAZY, ((1 << BFE_LAZY_FC_SHIFT) &
978 * We don't want lazy interrupts, so just send them at
979 * the end of a frame, please
981 BFE_OR(sc, BFE_RCV_LAZY, 0);
983 /* Set max lengths, accounting for VLAN tags */
984 CSR_WRITE_4(sc, BFE_RXMAXLEN, ETHER_MAX_LEN+32);
985 CSR_WRITE_4(sc, BFE_TXMAXLEN, ETHER_MAX_LEN+32);
987 /* Set watermark XXX - magic */
988 CSR_WRITE_4(sc, BFE_TX_WMARK, 56);
991 * Initialise DMA channels
992 * - not forgetting dma addresses need to be added to BFE_PCI_DMA
994 CSR_WRITE_4(sc, BFE_DMATX_CTRL, BFE_TX_CTRL_ENABLE);
995 CSR_WRITE_4(sc, BFE_DMATX_ADDR, sc->bfe_tx_dma + BFE_PCI_DMA);
997 CSR_WRITE_4(sc, BFE_DMARX_CTRL, (BFE_RX_OFFSET << BFE_RX_CTRL_ROSHIFT) |
999 CSR_WRITE_4(sc, BFE_DMARX_ADDR, sc->bfe_rx_dma + BFE_PCI_DMA);
1006 bfe_core_disable(struct bfe_softc *sc)
1008 if ((CSR_READ_4(sc, BFE_SBTMSLOW)) & BFE_RESET)
1012 * Set reject, wait for it set, then wait for the core to stop
1013 * being busy, then set reset and reject and enable the clocks.
1015 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_CLOCK));
1016 bfe_wait_bit(sc, BFE_SBTMSLOW, BFE_REJECT, 1000, 0);
1017 bfe_wait_bit(sc, BFE_SBTMSHIGH, BFE_BUSY, 1000, 1);
1018 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_FGC | BFE_CLOCK | BFE_REJECT |
1020 CSR_READ_4(sc, BFE_SBTMSLOW);
1022 /* Leave reset and reject set */
1023 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_REJECT | BFE_RESET));
1028 bfe_core_reset(struct bfe_softc *sc)
1032 /* Disable the core */
1033 bfe_core_disable(sc);
1035 /* and bring it back up */
1036 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_RESET | BFE_CLOCK | BFE_FGC));
1037 CSR_READ_4(sc, BFE_SBTMSLOW);
1040 /* Chip bug, clear SERR, IB and TO if they are set. */
1041 if (CSR_READ_4(sc, BFE_SBTMSHIGH) & BFE_SERR)
1042 CSR_WRITE_4(sc, BFE_SBTMSHIGH, 0);
1043 val = CSR_READ_4(sc, BFE_SBIMSTATE);
1044 if (val & (BFE_IBE | BFE_TO))
1045 CSR_WRITE_4(sc, BFE_SBIMSTATE, val & ~(BFE_IBE | BFE_TO));
1047 /* Clear reset and allow it to move through the core */
1048 CSR_WRITE_4(sc, BFE_SBTMSLOW, (BFE_CLOCK | BFE_FGC));
1049 CSR_READ_4(sc, BFE_SBTMSLOW);
1052 /* Leave the clock set */
1053 CSR_WRITE_4(sc, BFE_SBTMSLOW, BFE_CLOCK);
1054 CSR_READ_4(sc, BFE_SBTMSLOW);
1059 bfe_cam_write(struct bfe_softc *sc, u_char *data, int index)
1063 val = ((u_int32_t) data[2]) << 24;
1064 val |= ((u_int32_t) data[3]) << 16;
1065 val |= ((u_int32_t) data[4]) << 8;
1066 val |= ((u_int32_t) data[5]);
1067 CSR_WRITE_4(sc, BFE_CAM_DATA_LO, val);
1068 val = (BFE_CAM_HI_VALID |
1069 (((u_int32_t) data[0]) << 8) |
1070 (((u_int32_t) data[1])));
1071 CSR_WRITE_4(sc, BFE_CAM_DATA_HI, val);
1072 CSR_WRITE_4(sc, BFE_CAM_CTRL, (BFE_CAM_WRITE |
1073 ((u_int32_t) index << BFE_CAM_INDEX_SHIFT)));
1074 bfe_wait_bit(sc, BFE_CAM_CTRL, BFE_CAM_BUSY, 10000, 1);
1078 bfe_set_rx_mode(struct bfe_softc *sc)
1080 struct ifnet *ifp = sc->bfe_ifp;
1081 struct ifmultiaddr *ifma;
1085 BFE_LOCK_ASSERT(sc);
1087 val = CSR_READ_4(sc, BFE_RXCONF);
1089 if (ifp->if_flags & IFF_PROMISC)
1090 val |= BFE_RXCONF_PROMISC;
1092 val &= ~BFE_RXCONF_PROMISC;
1094 if (ifp->if_flags & IFF_BROADCAST)
1095 val &= ~BFE_RXCONF_DBCAST;
1097 val |= BFE_RXCONF_DBCAST;
1100 CSR_WRITE_4(sc, BFE_CAM_CTRL, 0);
1101 bfe_cam_write(sc, IF_LLADDR(sc->bfe_ifp), i++);
1103 if (ifp->if_flags & IFF_ALLMULTI)
1104 val |= BFE_RXCONF_ALLMULTI;
1106 val &= ~BFE_RXCONF_ALLMULTI;
1107 if_maddr_rlock(ifp);
1108 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1109 if (ifma->ifma_addr->sa_family != AF_LINK)
1112 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), i++);
1114 if_maddr_runlock(ifp);
1117 CSR_WRITE_4(sc, BFE_RXCONF, val);
1118 BFE_OR(sc, BFE_CAM_CTRL, BFE_CAM_ENABLE);
1122 bfe_dma_map(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1124 struct bfe_dmamap_arg *ctx;
1129 KASSERT(nseg == 1, ("%s : %d segments returned!", __func__, nseg));
1131 ctx = (struct bfe_dmamap_arg *)arg;
1132 ctx->bfe_busaddr = segs[0].ds_addr;
1136 bfe_release_resources(struct bfe_softc *sc)
1139 if (sc->bfe_intrhand != NULL)
1140 bus_teardown_intr(sc->bfe_dev, sc->bfe_irq, sc->bfe_intrhand);
1142 if (sc->bfe_irq != NULL)
1143 bus_release_resource(sc->bfe_dev, SYS_RES_IRQ, 0, sc->bfe_irq);
1145 if (sc->bfe_res != NULL)
1146 bus_release_resource(sc->bfe_dev, SYS_RES_MEMORY, PCIR_BAR(0),
1149 if (sc->bfe_ifp != NULL)
1150 if_free(sc->bfe_ifp);
1154 bfe_read_eeprom(struct bfe_softc *sc, u_int8_t *data)
1157 u_int16_t *ptr = (u_int16_t *)data;
1159 for(i = 0; i < 128; i += 2)
1160 ptr[i/2] = CSR_READ_4(sc, 4096 + i);
1164 bfe_wait_bit(struct bfe_softc *sc, u_int32_t reg, u_int32_t bit,
1165 u_long timeout, const int clear)
1169 for (i = 0; i < timeout; i++) {
1170 u_int32_t val = CSR_READ_4(sc, reg);
1172 if (clear && !(val & bit))
1174 if (!clear && (val & bit))
1179 device_printf(sc->bfe_dev,
1180 "BUG! Timeout waiting for bit %08x of register "
1181 "%x to %s.\n", bit, reg, (clear ? "clear" : "set"));
1188 bfe_readphy(struct bfe_softc *sc, u_int32_t reg, u_int32_t *val)
1193 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII);
1194 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START |
1195 (BFE_MDIO_OP_READ << BFE_MDIO_OP_SHIFT) |
1196 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) |
1197 (reg << BFE_MDIO_RA_SHIFT) |
1198 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT)));
1199 err = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0);
1200 *val = CSR_READ_4(sc, BFE_MDIO_DATA) & BFE_MDIO_DATA_DATA;
1206 bfe_writephy(struct bfe_softc *sc, u_int32_t reg, u_int32_t val)
1210 CSR_WRITE_4(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII);
1211 CSR_WRITE_4(sc, BFE_MDIO_DATA, (BFE_MDIO_SB_START |
1212 (BFE_MDIO_OP_WRITE << BFE_MDIO_OP_SHIFT) |
1213 (sc->bfe_phyaddr << BFE_MDIO_PMD_SHIFT) |
1214 (reg << BFE_MDIO_RA_SHIFT) |
1215 (BFE_MDIO_TA_VALID << BFE_MDIO_TA_SHIFT) |
1216 (val & BFE_MDIO_DATA_DATA)));
1217 status = bfe_wait_bit(sc, BFE_EMAC_ISTAT, BFE_EMAC_INT_MII, 100, 0);
1223 * XXX - I think this is handled by the PHY driver, but it can't hurt to do it
1227 bfe_setupphy(struct bfe_softc *sc)
1231 /* Enable activity LED */
1232 bfe_readphy(sc, 26, &val);
1233 bfe_writephy(sc, 26, val & 0x7fff);
1234 bfe_readphy(sc, 26, &val);
1236 /* Enable traffic meter LED mode */
1237 bfe_readphy(sc, 27, &val);
1238 bfe_writephy(sc, 27, val | (1 << 6));
1244 bfe_stats_update(struct bfe_softc *sc)
1246 struct bfe_hw_stats *stats;
1248 uint32_t mib[BFE_MIB_CNT];
1251 BFE_LOCK_ASSERT(sc);
1254 CSR_WRITE_4(sc, BFE_MIB_CTRL, BFE_MIB_CLR_ON_READ);
1255 for (reg = BFE_TX_GOOD_O; reg <= BFE_TX_PAUSE; reg += 4)
1256 *val++ = CSR_READ_4(sc, reg);
1257 for (reg = BFE_RX_GOOD_O; reg <= BFE_RX_NPAUSE; reg += 4)
1258 *val++ = CSR_READ_4(sc, reg);
1261 stats = &sc->bfe_stats;
1263 stats->tx_good_octets += mib[MIB_TX_GOOD_O];
1264 stats->tx_good_frames += mib[MIB_TX_GOOD_P];
1265 stats->tx_octets += mib[MIB_TX_O];
1266 stats->tx_frames += mib[MIB_TX_P];
1267 stats->tx_bcast_frames += mib[MIB_TX_BCAST];
1268 stats->tx_mcast_frames += mib[MIB_TX_MCAST];
1269 stats->tx_pkts_64 += mib[MIB_TX_64];
1270 stats->tx_pkts_65_127 += mib[MIB_TX_65_127];
1271 stats->tx_pkts_128_255 += mib[MIB_TX_128_255];
1272 stats->tx_pkts_256_511 += mib[MIB_TX_256_511];
1273 stats->tx_pkts_512_1023 += mib[MIB_TX_512_1023];
1274 stats->tx_pkts_1024_max += mib[MIB_TX_1024_MAX];
1275 stats->tx_jabbers += mib[MIB_TX_JABBER];
1276 stats->tx_oversize_frames += mib[MIB_TX_OSIZE];
1277 stats->tx_frag_frames += mib[MIB_TX_FRAG];
1278 stats->tx_underruns += mib[MIB_TX_URUNS];
1279 stats->tx_colls += mib[MIB_TX_TCOLS];
1280 stats->tx_single_colls += mib[MIB_TX_SCOLS];
1281 stats->tx_multi_colls += mib[MIB_TX_MCOLS];
1282 stats->tx_excess_colls += mib[MIB_TX_ECOLS];
1283 stats->tx_late_colls += mib[MIB_TX_LCOLS];
1284 stats->tx_deferrals += mib[MIB_TX_DEFERED];
1285 stats->tx_carrier_losts += mib[MIB_TX_CLOST];
1286 stats->tx_pause_frames += mib[MIB_TX_PAUSE];
1288 stats->rx_good_octets += mib[MIB_RX_GOOD_O];
1289 stats->rx_good_frames += mib[MIB_RX_GOOD_P];
1290 stats->rx_octets += mib[MIB_RX_O];
1291 stats->rx_frames += mib[MIB_RX_P];
1292 stats->rx_bcast_frames += mib[MIB_RX_BCAST];
1293 stats->rx_mcast_frames += mib[MIB_RX_MCAST];
1294 stats->rx_pkts_64 += mib[MIB_RX_64];
1295 stats->rx_pkts_65_127 += mib[MIB_RX_65_127];
1296 stats->rx_pkts_128_255 += mib[MIB_RX_128_255];
1297 stats->rx_pkts_256_511 += mib[MIB_RX_256_511];
1298 stats->rx_pkts_512_1023 += mib[MIB_RX_512_1023];
1299 stats->rx_pkts_1024_max += mib[MIB_RX_1024_MAX];
1300 stats->rx_jabbers += mib[MIB_RX_JABBER];
1301 stats->rx_oversize_frames += mib[MIB_RX_OSIZE];
1302 stats->rx_frag_frames += mib[MIB_RX_FRAG];
1303 stats->rx_missed_frames += mib[MIB_RX_MISS];
1304 stats->rx_crc_align_errs += mib[MIB_RX_CRCA];
1305 stats->rx_runts += mib[MIB_RX_USIZE];
1306 stats->rx_crc_errs += mib[MIB_RX_CRC];
1307 stats->rx_align_errs += mib[MIB_RX_ALIGN];
1308 stats->rx_symbol_errs += mib[MIB_RX_SYM];
1309 stats->rx_pause_frames += mib[MIB_RX_PAUSE];
1310 stats->rx_control_frames += mib[MIB_RX_NPAUSE];
1312 /* Update counters in ifnet. */
1313 if_inc_counter(ifp, IFCOUNTER_OPACKETS, (u_long)mib[MIB_TX_GOOD_P]);
1314 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, (u_long)mib[MIB_TX_TCOLS]);
1315 if_inc_counter(ifp, IFCOUNTER_OERRORS, (u_long)mib[MIB_TX_URUNS] +
1316 (u_long)mib[MIB_TX_ECOLS] +
1317 (u_long)mib[MIB_TX_DEFERED] +
1318 (u_long)mib[MIB_TX_CLOST]);
1320 if_inc_counter(ifp, IFCOUNTER_IPACKETS, (u_long)mib[MIB_RX_GOOD_P]);
1322 if_inc_counter(ifp, IFCOUNTER_IERRORS, mib[MIB_RX_JABBER] +
1332 bfe_txeof(struct bfe_softc *sc)
1334 struct bfe_tx_data *r;
1338 BFE_LOCK_ASSERT(sc);
1342 chipidx = CSR_READ_4(sc, BFE_DMATX_STAT) & BFE_STAT_CDMASK;
1343 chipidx /= sizeof(struct bfe_desc);
1345 i = sc->bfe_tx_cons;
1348 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map,
1349 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1350 /* Go through the mbufs and free those that have been transmitted */
1351 for (; i != chipidx; BFE_INC(i, BFE_TX_LIST_CNT)) {
1352 r = &sc->bfe_tx_ring[i];
1354 if (r->bfe_mbuf == NULL)
1356 bus_dmamap_sync(sc->bfe_txmbuf_tag, r->bfe_map,
1357 BUS_DMASYNC_POSTWRITE);
1358 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map);
1360 m_freem(r->bfe_mbuf);
1364 if (i != sc->bfe_tx_cons) {
1365 /* we freed up some mbufs */
1366 sc->bfe_tx_cons = i;
1367 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1370 if (sc->bfe_tx_cnt == 0)
1371 sc->bfe_watchdog_timer = 0;
1374 /* Pass a received packet up the stack */
1376 bfe_rxeof(struct bfe_softc *sc)
1380 struct bfe_rxheader *rxheader;
1381 struct bfe_rx_data *r;
1383 u_int32_t status, current, len, flags;
1385 BFE_LOCK_ASSERT(sc);
1386 cons = sc->bfe_rx_cons;
1387 status = CSR_READ_4(sc, BFE_DMARX_STAT);
1388 current = (status & BFE_STAT_CDMASK) / sizeof(struct bfe_desc);
1392 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map,
1393 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1395 for (prog = 0; current != cons; prog++,
1396 BFE_INC(cons, BFE_RX_LIST_CNT)) {
1397 r = &sc->bfe_rx_ring[cons];
1400 * Rx status should be read from mbuf such that we can't
1401 * delay bus_dmamap_sync(9). This hardware limiation
1402 * results in inefficent mbuf usage as bfe(4) couldn't
1403 * reuse mapped buffer from errored frame.
1405 if (bfe_list_newbuf(sc, cons) != 0) {
1406 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
1407 bfe_discard_buf(sc, cons);
1410 rxheader = mtod(m, struct bfe_rxheader*);
1411 len = le16toh(rxheader->len);
1412 flags = le16toh(rxheader->flags);
1414 /* Remove CRC bytes. */
1415 len -= ETHER_CRC_LEN;
1417 /* flag an error and try again */
1418 if ((len > ETHER_MAX_LEN+32) || (flags & BFE_RX_FLAG_ERRORS)) {
1423 /* Make sure to skip header bytes written by hardware. */
1424 m_adj(m, BFE_RX_OFFSET);
1425 m->m_len = m->m_pkthdr.len = len;
1427 m->m_pkthdr.rcvif = ifp;
1429 (*ifp->if_input)(ifp, m);
1434 sc->bfe_rx_cons = cons;
1435 bus_dmamap_sync(sc->bfe_rx_tag, sc->bfe_rx_map,
1436 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1443 struct bfe_softc *sc = xsc;
1451 istat = CSR_READ_4(sc, BFE_ISTAT);
1454 * Defer unsolicited interrupts - This is necessary because setting the
1455 * chips interrupt mask register to 0 doesn't actually stop the
1458 istat &= BFE_IMASK_DEF;
1459 CSR_WRITE_4(sc, BFE_ISTAT, istat);
1460 CSR_READ_4(sc, BFE_ISTAT);
1462 /* not expecting this interrupt, disregard it */
1463 if (istat == 0 || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1468 /* A packet was received */
1469 if (istat & BFE_ISTAT_RX)
1472 /* A packet was sent */
1473 if (istat & BFE_ISTAT_TX)
1476 if (istat & BFE_ISTAT_ERRORS) {
1478 if (istat & BFE_ISTAT_DSCE) {
1479 device_printf(sc->bfe_dev, "Descriptor Error\n");
1485 if (istat & BFE_ISTAT_DPE) {
1486 device_printf(sc->bfe_dev,
1487 "Descriptor Protocol Error\n");
1492 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1493 bfe_init_locked(sc);
1496 /* We have packets pending, fire them out */
1497 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1498 bfe_start_locked(ifp);
1504 bfe_encap(struct bfe_softc *sc, struct mbuf **m_head)
1507 struct bfe_tx_data *r, *r1;
1510 bus_dma_segment_t txsegs[BFE_MAXTXSEGS];
1512 int error, i, nsegs;
1514 BFE_LOCK_ASSERT(sc);
1516 M_ASSERTPKTHDR((*m_head));
1518 si = cur = sc->bfe_tx_prod;
1519 r = &sc->bfe_tx_ring[cur];
1520 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map, *m_head,
1522 if (error == EFBIG) {
1523 m = m_collapse(*m_head, M_NOWAIT, BFE_MAXTXSEGS);
1530 error = bus_dmamap_load_mbuf_sg(sc->bfe_txmbuf_tag, r->bfe_map,
1531 *m_head, txsegs, &nsegs, 0);
1537 } else if (error != 0)
1545 if (sc->bfe_tx_cnt + nsegs > BFE_TX_LIST_CNT - 1) {
1546 bus_dmamap_unload(sc->bfe_txmbuf_tag, r->bfe_map);
1550 for (i = 0; i < nsegs; i++) {
1551 d = &sc->bfe_tx_list[cur];
1552 d->bfe_ctrl = htole32(txsegs[i].ds_len & BFE_DESC_LEN);
1553 d->bfe_ctrl |= htole32(BFE_DESC_IOC);
1554 if (cur == BFE_TX_LIST_CNT - 1)
1556 * Tell the chip to wrap to the start of
1557 * the descriptor list.
1559 d->bfe_ctrl |= htole32(BFE_DESC_EOT);
1560 /* The chip needs all addresses to be added to BFE_PCI_DMA. */
1561 d->bfe_addr = htole32(BFE_ADDR_LO(txsegs[i].ds_addr) +
1563 BFE_INC(cur, BFE_TX_LIST_CNT);
1566 /* Update producer index. */
1567 sc->bfe_tx_prod = cur;
1569 /* Set EOF on the last descriptor. */
1570 cur = (cur + BFE_TX_LIST_CNT - 1) % BFE_TX_LIST_CNT;
1571 d = &sc->bfe_tx_list[cur];
1572 d->bfe_ctrl |= htole32(BFE_DESC_EOF);
1574 /* Lastly set SOF on the first descriptor to avoid races. */
1575 d = &sc->bfe_tx_list[si];
1576 d->bfe_ctrl |= htole32(BFE_DESC_SOF);
1578 r1 = &sc->bfe_tx_ring[cur];
1580 r->bfe_map = r1->bfe_map;
1582 r1->bfe_mbuf = *m_head;
1583 sc->bfe_tx_cnt += nsegs;
1585 bus_dmamap_sync(sc->bfe_txmbuf_tag, map, BUS_DMASYNC_PREWRITE);
1591 * Set up to transmit a packet.
1594 bfe_start(struct ifnet *ifp)
1596 BFE_LOCK((struct bfe_softc *)ifp->if_softc);
1597 bfe_start_locked(ifp);
1598 BFE_UNLOCK((struct bfe_softc *)ifp->if_softc);
1602 * Set up to transmit a packet. The softc is already locked.
1605 bfe_start_locked(struct ifnet *ifp)
1607 struct bfe_softc *sc;
1608 struct mbuf *m_head;
1613 BFE_LOCK_ASSERT(sc);
1616 * Not much point trying to send if the link is down
1617 * or we have nothing to send.
1619 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1620 IFF_DRV_RUNNING || (sc->bfe_flags & BFE_FLAG_LINK) == 0)
1623 for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) &&
1624 sc->bfe_tx_cnt < BFE_TX_LIST_CNT - 1;) {
1625 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
1630 * Pack the data into the tx ring. If we dont have
1631 * enough room, let the chip drain the ring.
1633 if (bfe_encap(sc, &m_head)) {
1636 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
1637 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1644 * If there's a BPF listener, bounce a copy of this frame
1647 BPF_MTAP(ifp, m_head);
1651 bus_dmamap_sync(sc->bfe_tx_tag, sc->bfe_tx_map,
1652 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1653 /* Transmit - twice due to apparent hardware bug */
1654 CSR_WRITE_4(sc, BFE_DMATX_PTR,
1655 sc->bfe_tx_prod * sizeof(struct bfe_desc));
1657 * XXX It seems the following write is not necessary
1658 * to kick Tx command. What might be required would be
1659 * a way flushing PCI posted write. Reading the register
1660 * back ensures the flush operation. In addition,
1661 * hardware will execute PCI posted write in the long
1662 * run and watchdog timer for the kick command was set
1663 * to 5 seconds. Therefore I think the second write
1664 * access is not necessary or could be replaced with
1667 CSR_WRITE_4(sc, BFE_DMATX_PTR,
1668 sc->bfe_tx_prod * sizeof(struct bfe_desc));
1671 * Set a timeout in case the chip goes out to lunch.
1673 sc->bfe_watchdog_timer = 5;
1680 BFE_LOCK((struct bfe_softc *)xsc);
1681 bfe_init_locked(xsc);
1682 BFE_UNLOCK((struct bfe_softc *)xsc);
1686 bfe_init_locked(void *xsc)
1688 struct bfe_softc *sc = (struct bfe_softc*)xsc;
1689 struct ifnet *ifp = sc->bfe_ifp;
1690 struct mii_data *mii;
1692 BFE_LOCK_ASSERT(sc);
1694 mii = device_get_softc(sc->bfe_miibus);
1696 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1702 if (bfe_list_rx_init(sc) == ENOBUFS) {
1703 device_printf(sc->bfe_dev,
1704 "%s: Not enough memory for list buffers\n", __func__);
1708 bfe_list_tx_init(sc);
1710 bfe_set_rx_mode(sc);
1712 /* Enable the chip and core */
1713 BFE_OR(sc, BFE_ENET_CTRL, BFE_ENET_ENABLE);
1714 /* Enable interrupts */
1715 CSR_WRITE_4(sc, BFE_IMASK, BFE_IMASK_DEF);
1717 /* Clear link state and change media. */
1718 sc->bfe_flags &= ~BFE_FLAG_LINK;
1721 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1722 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1724 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc);
1728 * Set media options.
1731 bfe_ifmedia_upd(struct ifnet *ifp)
1733 struct bfe_softc *sc;
1734 struct mii_data *mii;
1735 struct mii_softc *miisc;
1741 mii = device_get_softc(sc->bfe_miibus);
1742 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
1744 error = mii_mediachg(mii);
1751 * Report current media status.
1754 bfe_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1756 struct bfe_softc *sc = ifp->if_softc;
1757 struct mii_data *mii;
1760 mii = device_get_softc(sc->bfe_miibus);
1762 ifmr->ifm_active = mii->mii_media_active;
1763 ifmr->ifm_status = mii->mii_media_status;
1768 bfe_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
1770 struct bfe_softc *sc = ifp->if_softc;
1771 struct ifreq *ifr = (struct ifreq *) data;
1772 struct mii_data *mii;
1778 if (ifp->if_flags & IFF_UP) {
1779 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1780 bfe_set_rx_mode(sc);
1781 else if ((sc->bfe_flags & BFE_FLAG_DETACH) == 0)
1782 bfe_init_locked(sc);
1783 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1790 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1791 bfe_set_rx_mode(sc);
1796 mii = device_get_softc(sc->bfe_miibus);
1797 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
1800 error = ether_ioctl(ifp, command, data);
1808 bfe_watchdog(struct bfe_softc *sc)
1812 BFE_LOCK_ASSERT(sc);
1814 if (sc->bfe_watchdog_timer == 0 || --sc->bfe_watchdog_timer)
1819 device_printf(sc->bfe_dev, "watchdog timeout -- resetting\n");
1821 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1822 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1823 bfe_init_locked(sc);
1825 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1826 bfe_start_locked(ifp);
1832 struct bfe_softc *sc = xsc;
1833 struct mii_data *mii;
1835 BFE_LOCK_ASSERT(sc);
1837 mii = device_get_softc(sc->bfe_miibus);
1839 bfe_stats_update(sc);
1841 callout_reset(&sc->bfe_stat_co, hz, bfe_tick, sc);
1845 * Stop the adapter and free any mbufs allocated to the
1849 bfe_stop(struct bfe_softc *sc)
1853 BFE_LOCK_ASSERT(sc);
1856 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1857 sc->bfe_flags &= ~BFE_FLAG_LINK;
1858 callout_stop(&sc->bfe_stat_co);
1859 sc->bfe_watchdog_timer = 0;
1862 bfe_tx_ring_free(sc);
1863 bfe_rx_ring_free(sc);
1867 sysctl_bfe_stats(SYSCTL_HANDLER_ARGS)
1869 struct bfe_softc *sc;
1870 struct bfe_hw_stats *stats;
1874 error = sysctl_handle_int(oidp, &result, 0, req);
1876 if (error != 0 || req->newptr == NULL)
1882 sc = (struct bfe_softc *)arg1;
1883 stats = &sc->bfe_stats;
1885 printf("%s statistics:\n", device_get_nameunit(sc->bfe_dev));
1886 printf("Transmit good octets : %ju\n",
1887 (uintmax_t)stats->tx_good_octets);
1888 printf("Transmit good frames : %ju\n",
1889 (uintmax_t)stats->tx_good_frames);
1890 printf("Transmit octets : %ju\n",
1891 (uintmax_t)stats->tx_octets);
1892 printf("Transmit frames : %ju\n",
1893 (uintmax_t)stats->tx_frames);
1894 printf("Transmit broadcast frames : %ju\n",
1895 (uintmax_t)stats->tx_bcast_frames);
1896 printf("Transmit multicast frames : %ju\n",
1897 (uintmax_t)stats->tx_mcast_frames);
1898 printf("Transmit frames 64 bytes : %ju\n",
1899 (uint64_t)stats->tx_pkts_64);
1900 printf("Transmit frames 65 to 127 bytes : %ju\n",
1901 (uint64_t)stats->tx_pkts_65_127);
1902 printf("Transmit frames 128 to 255 bytes : %ju\n",
1903 (uint64_t)stats->tx_pkts_128_255);
1904 printf("Transmit frames 256 to 511 bytes : %ju\n",
1905 (uint64_t)stats->tx_pkts_256_511);
1906 printf("Transmit frames 512 to 1023 bytes : %ju\n",
1907 (uint64_t)stats->tx_pkts_512_1023);
1908 printf("Transmit frames 1024 to max bytes : %ju\n",
1909 (uint64_t)stats->tx_pkts_1024_max);
1910 printf("Transmit jabber errors : %u\n", stats->tx_jabbers);
1911 printf("Transmit oversized frames : %ju\n",
1912 (uint64_t)stats->tx_oversize_frames);
1913 printf("Transmit fragmented frames : %ju\n",
1914 (uint64_t)stats->tx_frag_frames);
1915 printf("Transmit underruns : %u\n", stats->tx_colls);
1916 printf("Transmit total collisions : %u\n", stats->tx_single_colls);
1917 printf("Transmit single collisions : %u\n", stats->tx_single_colls);
1918 printf("Transmit multiple collisions : %u\n", stats->tx_multi_colls);
1919 printf("Transmit excess collisions : %u\n", stats->tx_excess_colls);
1920 printf("Transmit late collisions : %u\n", stats->tx_late_colls);
1921 printf("Transmit deferrals : %u\n", stats->tx_deferrals);
1922 printf("Transmit carrier losts : %u\n", stats->tx_carrier_losts);
1923 printf("Transmit pause frames : %u\n", stats->tx_pause_frames);
1925 printf("Receive good octets : %ju\n",
1926 (uintmax_t)stats->rx_good_octets);
1927 printf("Receive good frames : %ju\n",
1928 (uintmax_t)stats->rx_good_frames);
1929 printf("Receive octets : %ju\n",
1930 (uintmax_t)stats->rx_octets);
1931 printf("Receive frames : %ju\n",
1932 (uintmax_t)stats->rx_frames);
1933 printf("Receive broadcast frames : %ju\n",
1934 (uintmax_t)stats->rx_bcast_frames);
1935 printf("Receive multicast frames : %ju\n",
1936 (uintmax_t)stats->rx_mcast_frames);
1937 printf("Receive frames 64 bytes : %ju\n",
1938 (uint64_t)stats->rx_pkts_64);
1939 printf("Receive frames 65 to 127 bytes : %ju\n",
1940 (uint64_t)stats->rx_pkts_65_127);
1941 printf("Receive frames 128 to 255 bytes : %ju\n",
1942 (uint64_t)stats->rx_pkts_128_255);
1943 printf("Receive frames 256 to 511 bytes : %ju\n",
1944 (uint64_t)stats->rx_pkts_256_511);
1945 printf("Receive frames 512 to 1023 bytes : %ju\n",
1946 (uint64_t)stats->rx_pkts_512_1023);
1947 printf("Receive frames 1024 to max bytes : %ju\n",
1948 (uint64_t)stats->rx_pkts_1024_max);
1949 printf("Receive jabber errors : %u\n", stats->rx_jabbers);
1950 printf("Receive oversized frames : %ju\n",
1951 (uint64_t)stats->rx_oversize_frames);
1952 printf("Receive fragmented frames : %ju\n",
1953 (uint64_t)stats->rx_frag_frames);
1954 printf("Receive missed frames : %u\n", stats->rx_missed_frames);
1955 printf("Receive CRC align errors : %u\n", stats->rx_crc_align_errs);
1956 printf("Receive undersized frames : %u\n", stats->rx_runts);
1957 printf("Receive CRC errors : %u\n", stats->rx_crc_errs);
1958 printf("Receive align errors : %u\n", stats->rx_align_errs);
1959 printf("Receive symbol errors : %u\n", stats->rx_symbol_errs);
1960 printf("Receive pause frames : %u\n", stats->rx_pause_frames);
1961 printf("Receive control frames : %u\n", stats->rx_control_frames);