2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
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.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 /* Driver for DM&P Electronics, Inc, Vortex86 RDC R6040 FastEthernet. */
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include <sys/param.h>
36 #include <sys/systm.h>
38 #include <sys/endian.h>
39 #include <sys/kernel.h>
41 #include <sys/malloc.h>
43 #include <sys/module.h>
44 #include <sys/mutex.h>
46 #include <sys/socket.h>
47 #include <sys/sockio.h>
48 #include <sys/sysctl.h>
52 #include <net/if_var.h>
53 #include <net/if_arp.h>
54 #include <net/ethernet.h>
55 #include <net/if_dl.h>
56 #include <net/if_llc.h>
57 #include <net/if_media.h>
58 #include <net/if_types.h>
59 #include <net/if_vlan_var.h>
61 #include <netinet/in.h>
62 #include <netinet/in_systm.h>
64 #include <dev/mii/mii.h>
65 #include <dev/mii/miivar.h>
67 #include <dev/pci/pcireg.h>
68 #include <dev/pci/pcivar.h>
70 #include <machine/bus.h>
72 #include <dev/vte/if_vtereg.h>
73 #include <dev/vte/if_vtevar.h>
75 /* "device miibus" required. See GENERIC if you get errors here. */
76 #include "miibus_if.h"
78 MODULE_DEPEND(vte, pci, 1, 1, 1);
79 MODULE_DEPEND(vte, ether, 1, 1, 1);
80 MODULE_DEPEND(vte, miibus, 1, 1, 1);
83 static int tx_deep_copy = 1;
84 TUNABLE_INT("hw.vte.tx_deep_copy", &tx_deep_copy);
87 * Devices supported by this driver.
89 static const struct vte_ident vte_ident_table[] = {
90 { VENDORID_RDC, DEVICEID_RDC_R6040, "RDC R6040 FastEthernet"},
94 static int vte_attach(device_t);
95 static int vte_detach(device_t);
96 static int vte_dma_alloc(struct vte_softc *);
97 static void vte_dma_free(struct vte_softc *);
98 static void vte_dmamap_cb(void *, bus_dma_segment_t *, int, int);
99 static struct vte_txdesc *
100 vte_encap(struct vte_softc *, struct mbuf **);
101 static const struct vte_ident *
102 vte_find_ident(device_t);
103 #ifndef __NO_STRICT_ALIGNMENT
105 vte_fixup_rx(struct ifnet *, struct mbuf *);
107 static void vte_get_macaddr(struct vte_softc *);
108 static void vte_init(void *);
109 static void vte_init_locked(struct vte_softc *);
110 static int vte_init_rx_ring(struct vte_softc *);
111 static int vte_init_tx_ring(struct vte_softc *);
112 static void vte_intr(void *);
113 static int vte_ioctl(struct ifnet *, u_long, caddr_t);
114 static uint64_t vte_get_counter(struct ifnet *, ift_counter);
115 static void vte_mac_config(struct vte_softc *);
116 static int vte_miibus_readreg(device_t, int, int);
117 static void vte_miibus_statchg(device_t);
118 static int vte_miibus_writereg(device_t, int, int, int);
119 static int vte_mediachange(struct ifnet *);
120 static int vte_mediachange_locked(struct ifnet *);
121 static void vte_mediastatus(struct ifnet *, struct ifmediareq *);
122 static int vte_newbuf(struct vte_softc *, struct vte_rxdesc *);
123 static int vte_probe(device_t);
124 static void vte_reset(struct vte_softc *);
125 static int vte_resume(device_t);
126 static void vte_rxeof(struct vte_softc *);
127 static void vte_rxfilter(struct vte_softc *);
128 static int vte_shutdown(device_t);
129 static void vte_start(struct ifnet *);
130 static void vte_start_locked(struct vte_softc *);
131 static void vte_start_mac(struct vte_softc *);
132 static void vte_stats_clear(struct vte_softc *);
133 static void vte_stats_update(struct vte_softc *);
134 static void vte_stop(struct vte_softc *);
135 static void vte_stop_mac(struct vte_softc *);
136 static int vte_suspend(device_t);
137 static void vte_sysctl_node(struct vte_softc *);
138 static void vte_tick(void *);
139 static void vte_txeof(struct vte_softc *);
140 static void vte_watchdog(struct vte_softc *);
141 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int);
142 static int sysctl_hw_vte_int_mod(SYSCTL_HANDLER_ARGS);
144 static device_method_t vte_methods[] = {
145 /* Device interface. */
146 DEVMETHOD(device_probe, vte_probe),
147 DEVMETHOD(device_attach, vte_attach),
148 DEVMETHOD(device_detach, vte_detach),
149 DEVMETHOD(device_shutdown, vte_shutdown),
150 DEVMETHOD(device_suspend, vte_suspend),
151 DEVMETHOD(device_resume, vte_resume),
154 DEVMETHOD(miibus_readreg, vte_miibus_readreg),
155 DEVMETHOD(miibus_writereg, vte_miibus_writereg),
156 DEVMETHOD(miibus_statchg, vte_miibus_statchg),
161 static driver_t vte_driver = {
164 sizeof(struct vte_softc)
167 static devclass_t vte_devclass;
169 DRIVER_MODULE(vte, pci, vte_driver, vte_devclass, 0, 0);
170 DRIVER_MODULE(miibus, vte, miibus_driver, miibus_devclass, 0, 0);
173 vte_miibus_readreg(device_t dev, int phy, int reg)
175 struct vte_softc *sc;
178 sc = device_get_softc(dev);
180 CSR_WRITE_2(sc, VTE_MMDIO, MMDIO_READ |
181 (phy << MMDIO_PHY_ADDR_SHIFT) | (reg << MMDIO_REG_ADDR_SHIFT));
182 for (i = VTE_PHY_TIMEOUT; i > 0; i--) {
184 if ((CSR_READ_2(sc, VTE_MMDIO) & MMDIO_READ) == 0)
189 device_printf(sc->vte_dev, "phy read timeout : %d\n", reg);
193 return (CSR_READ_2(sc, VTE_MMRD));
197 vte_miibus_writereg(device_t dev, int phy, int reg, int val)
199 struct vte_softc *sc;
202 sc = device_get_softc(dev);
204 CSR_WRITE_2(sc, VTE_MMWD, val);
205 CSR_WRITE_2(sc, VTE_MMDIO, MMDIO_WRITE |
206 (phy << MMDIO_PHY_ADDR_SHIFT) | (reg << MMDIO_REG_ADDR_SHIFT));
207 for (i = VTE_PHY_TIMEOUT; i > 0; i--) {
209 if ((CSR_READ_2(sc, VTE_MMDIO) & MMDIO_WRITE) == 0)
214 device_printf(sc->vte_dev, "phy write timeout : %d\n", reg);
220 vte_miibus_statchg(device_t dev)
222 struct vte_softc *sc;
223 struct mii_data *mii;
227 sc = device_get_softc(dev);
229 mii = device_get_softc(sc->vte_miibus);
231 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
234 sc->vte_flags &= ~VTE_FLAG_LINK;
235 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
236 (IFM_ACTIVE | IFM_AVALID)) {
237 switch (IFM_SUBTYPE(mii->mii_media_active)) {
240 sc->vte_flags |= VTE_FLAG_LINK;
247 /* Stop RX/TX MACs. */
249 /* Program MACs with resolved duplex and flow control. */
250 if ((sc->vte_flags & VTE_FLAG_LINK) != 0) {
252 * Timer waiting time : (63 + TIMER * 64) MII clock.
253 * MII clock : 25MHz(100Mbps) or 2.5MHz(10Mbps).
255 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
256 val = 18 << VTE_IM_TIMER_SHIFT;
258 val = 1 << VTE_IM_TIMER_SHIFT;
259 val |= sc->vte_int_rx_mod << VTE_IM_BUNDLE_SHIFT;
260 /* 48.6us for 100Mbps, 50.8us for 10Mbps */
261 CSR_WRITE_2(sc, VTE_MRICR, val);
263 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX)
264 val = 18 << VTE_IM_TIMER_SHIFT;
266 val = 1 << VTE_IM_TIMER_SHIFT;
267 val |= sc->vte_int_tx_mod << VTE_IM_BUNDLE_SHIFT;
268 /* 48.6us for 100Mbps, 50.8us for 10Mbps */
269 CSR_WRITE_2(sc, VTE_MTICR, val);
277 vte_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
279 struct vte_softc *sc;
280 struct mii_data *mii;
284 if ((ifp->if_flags & IFF_UP) == 0) {
288 mii = device_get_softc(sc->vte_miibus);
291 ifmr->ifm_status = mii->mii_media_status;
292 ifmr->ifm_active = mii->mii_media_active;
297 vte_mediachange(struct ifnet *ifp)
299 struct vte_softc *sc;
304 error = vte_mediachange_locked(ifp);
310 vte_mediachange_locked(struct ifnet *ifp)
312 struct vte_softc *sc;
313 struct mii_data *mii;
314 struct mii_softc *miisc;
318 mii = device_get_softc(sc->vte_miibus);
319 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
321 error = mii_mediachg(mii);
326 static const struct vte_ident *
327 vte_find_ident(device_t dev)
329 const struct vte_ident *ident;
330 uint16_t vendor, devid;
332 vendor = pci_get_vendor(dev);
333 devid = pci_get_device(dev);
334 for (ident = vte_ident_table; ident->name != NULL; ident++) {
335 if (vendor == ident->vendorid && devid == ident->deviceid)
343 vte_probe(device_t dev)
345 const struct vte_ident *ident;
347 ident = vte_find_ident(dev);
349 device_set_desc(dev, ident->name);
350 return (BUS_PROBE_DEFAULT);
357 vte_get_macaddr(struct vte_softc *sc)
362 * It seems there is no way to reload station address and
363 * it is supposed to be set by BIOS.
365 mid = CSR_READ_2(sc, VTE_MID0L);
366 sc->vte_eaddr[0] = (mid >> 0) & 0xFF;
367 sc->vte_eaddr[1] = (mid >> 8) & 0xFF;
368 mid = CSR_READ_2(sc, VTE_MID0M);
369 sc->vte_eaddr[2] = (mid >> 0) & 0xFF;
370 sc->vte_eaddr[3] = (mid >> 8) & 0xFF;
371 mid = CSR_READ_2(sc, VTE_MID0H);
372 sc->vte_eaddr[4] = (mid >> 0) & 0xFF;
373 sc->vte_eaddr[5] = (mid >> 8) & 0xFF;
377 vte_attach(device_t dev)
379 struct vte_softc *sc;
385 sc = device_get_softc(dev);
388 mtx_init(&sc->vte_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
390 callout_init_mtx(&sc->vte_tick_ch, &sc->vte_mtx, 0);
391 sc->vte_ident = vte_find_ident(dev);
393 /* Map the device. */
394 pci_enable_busmaster(dev);
395 sc->vte_res_id = PCIR_BAR(1);
396 sc->vte_res_type = SYS_RES_MEMORY;
397 sc->vte_res = bus_alloc_resource_any(dev, sc->vte_res_type,
398 &sc->vte_res_id, RF_ACTIVE);
399 if (sc->vte_res == NULL) {
400 sc->vte_res_id = PCIR_BAR(0);
401 sc->vte_res_type = SYS_RES_IOPORT;
402 sc->vte_res = bus_alloc_resource_any(dev, sc->vte_res_type,
403 &sc->vte_res_id, RF_ACTIVE);
404 if (sc->vte_res == NULL) {
405 device_printf(dev, "cannot map memory/ports.\n");
406 mtx_destroy(&sc->vte_mtx);
411 device_printf(dev, "using %s space register mapping\n",
412 sc->vte_res_type == SYS_RES_MEMORY ? "memory" : "I/O");
413 device_printf(dev, "MAC Identifier : 0x%04x\n",
414 CSR_READ_2(sc, VTE_MACID));
415 macid = CSR_READ_2(sc, VTE_MACID_REV);
416 device_printf(dev, "MAC Id. 0x%02x, Rev. 0x%02x\n",
417 (macid & VTE_MACID_MASK) >> VTE_MACID_SHIFT,
418 (macid & VTE_MACID_REV_MASK) >> VTE_MACID_REV_SHIFT);
422 sc->vte_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
423 RF_SHAREABLE | RF_ACTIVE);
424 if (sc->vte_irq == NULL) {
425 device_printf(dev, "cannot allocate IRQ resources.\n");
430 /* Reset the ethernet controller. */
433 if ((error = vte_dma_alloc(sc)) != 0)
436 /* Create device sysctl node. */
439 /* Load station address. */
442 ifp = sc->vte_ifp = if_alloc(IFT_ETHER);
444 device_printf(dev, "cannot allocate ifnet structure.\n");
450 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
451 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
452 ifp->if_ioctl = vte_ioctl;
453 ifp->if_start = vte_start;
454 ifp->if_init = vte_init;
455 ifp->if_get_counter = vte_get_counter;
456 ifp->if_snd.ifq_drv_maxlen = VTE_TX_RING_CNT - 1;
457 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
458 IFQ_SET_READY(&ifp->if_snd);
462 * BIOS would have initialized VTE_MPSCCR to catch PHY
463 * status changes so driver may be able to extract
464 * configured PHY address. Since it's common to see BIOS
465 * fails to initialize the register(including the sample
466 * board I have), let mii(4) probe it. This is more
467 * reliable than relying on BIOS's initialization.
469 * Advertising flow control capability to mii(4) was
470 * intentionally disabled due to severe problems in TX
471 * pause frame generation. See vte_rxeof() for more
474 error = mii_attach(dev, &sc->vte_miibus, ifp, vte_mediachange,
475 vte_mediastatus, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0);
477 device_printf(dev, "attaching PHYs failed\n");
481 ether_ifattach(ifp, sc->vte_eaddr);
483 /* VLAN capability setup. */
484 ifp->if_capabilities |= IFCAP_VLAN_MTU;
485 ifp->if_capenable = ifp->if_capabilities;
486 /* Tell the upper layer we support VLAN over-sized frames. */
487 ifp->if_hdrlen = sizeof(struct ether_vlan_header);
489 error = bus_setup_intr(dev, sc->vte_irq, INTR_TYPE_NET | INTR_MPSAFE,
490 NULL, vte_intr, sc, &sc->vte_intrhand);
492 device_printf(dev, "could not set up interrupt handler.\n");
505 vte_detach(device_t dev)
507 struct vte_softc *sc;
510 sc = device_get_softc(dev);
513 if (device_is_attached(dev)) {
517 callout_drain(&sc->vte_tick_ch);
521 if (sc->vte_miibus != NULL) {
522 device_delete_child(dev, sc->vte_miibus);
523 sc->vte_miibus = NULL;
525 bus_generic_detach(dev);
527 if (sc->vte_intrhand != NULL) {
528 bus_teardown_intr(dev, sc->vte_irq, sc->vte_intrhand);
529 sc->vte_intrhand = NULL;
531 if (sc->vte_irq != NULL) {
532 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vte_irq);
535 if (sc->vte_res != NULL) {
536 bus_release_resource(dev, sc->vte_res_type, sc->vte_res_id,
545 mtx_destroy(&sc->vte_mtx);
550 #define VTE_SYSCTL_STAT_ADD32(c, h, n, p, d) \
551 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
554 vte_sysctl_node(struct vte_softc *sc)
556 struct sysctl_ctx_list *ctx;
557 struct sysctl_oid_list *child, *parent;
558 struct sysctl_oid *tree;
559 struct vte_hw_stats *stats;
562 stats = &sc->vte_stats;
563 ctx = device_get_sysctl_ctx(sc->vte_dev);
564 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->vte_dev));
566 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
567 CTLTYPE_INT | CTLFLAG_RW, &sc->vte_int_rx_mod, 0,
568 sysctl_hw_vte_int_mod, "I", "vte RX interrupt moderation");
569 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
570 CTLTYPE_INT | CTLFLAG_RW, &sc->vte_int_tx_mod, 0,
571 sysctl_hw_vte_int_mod, "I", "vte TX interrupt moderation");
572 /* Pull in device tunables. */
573 sc->vte_int_rx_mod = VTE_IM_RX_BUNDLE_DEFAULT;
574 error = resource_int_value(device_get_name(sc->vte_dev),
575 device_get_unit(sc->vte_dev), "int_rx_mod", &sc->vte_int_rx_mod);
577 if (sc->vte_int_rx_mod < VTE_IM_BUNDLE_MIN ||
578 sc->vte_int_rx_mod > VTE_IM_BUNDLE_MAX) {
579 device_printf(sc->vte_dev, "int_rx_mod value out of "
580 "range; using default: %d\n",
581 VTE_IM_RX_BUNDLE_DEFAULT);
582 sc->vte_int_rx_mod = VTE_IM_RX_BUNDLE_DEFAULT;
586 sc->vte_int_tx_mod = VTE_IM_TX_BUNDLE_DEFAULT;
587 error = resource_int_value(device_get_name(sc->vte_dev),
588 device_get_unit(sc->vte_dev), "int_tx_mod", &sc->vte_int_tx_mod);
590 if (sc->vte_int_tx_mod < VTE_IM_BUNDLE_MIN ||
591 sc->vte_int_tx_mod > VTE_IM_BUNDLE_MAX) {
592 device_printf(sc->vte_dev, "int_tx_mod value out of "
593 "range; using default: %d\n",
594 VTE_IM_TX_BUNDLE_DEFAULT);
595 sc->vte_int_tx_mod = VTE_IM_TX_BUNDLE_DEFAULT;
599 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
600 NULL, "VTE statistics");
601 parent = SYSCTL_CHILDREN(tree);
604 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
605 NULL, "RX MAC statistics");
606 child = SYSCTL_CHILDREN(tree);
607 VTE_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
608 &stats->rx_frames, "Good frames");
609 VTE_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
610 &stats->rx_bcast_frames, "Good broadcast frames");
611 VTE_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
612 &stats->rx_mcast_frames, "Good multicast frames");
613 VTE_SYSCTL_STAT_ADD32(ctx, child, "runt",
614 &stats->rx_runts, "Too short frames");
615 VTE_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
616 &stats->rx_crcerrs, "CRC errors");
617 VTE_SYSCTL_STAT_ADD32(ctx, child, "long_frames",
618 &stats->rx_long_frames,
619 "Frames that have longer length than maximum packet length");
620 VTE_SYSCTL_STAT_ADD32(ctx, child, "fifo_full",
621 &stats->rx_fifo_full, "FIFO full");
622 VTE_SYSCTL_STAT_ADD32(ctx, child, "desc_unavail",
623 &stats->rx_desc_unavail, "Descriptor unavailable frames");
624 VTE_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
625 &stats->rx_pause_frames, "Pause control frames");
628 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
629 NULL, "TX MAC statistics");
630 child = SYSCTL_CHILDREN(tree);
631 VTE_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
632 &stats->tx_frames, "Good frames");
633 VTE_SYSCTL_STAT_ADD32(ctx, child, "underruns",
634 &stats->tx_underruns, "FIFO underruns");
635 VTE_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
636 &stats->tx_late_colls, "Late collisions");
637 VTE_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
638 &stats->tx_pause_frames, "Pause control frames");
641 #undef VTE_SYSCTL_STAT_ADD32
643 struct vte_dmamap_arg {
644 bus_addr_t vte_busaddr;
648 vte_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
650 struct vte_dmamap_arg *ctx;
655 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
657 ctx = (struct vte_dmamap_arg *)arg;
658 ctx->vte_busaddr = segs[0].ds_addr;
662 vte_dma_alloc(struct vte_softc *sc)
664 struct vte_txdesc *txd;
665 struct vte_rxdesc *rxd;
666 struct vte_dmamap_arg ctx;
669 /* Create parent DMA tag. */
670 error = bus_dma_tag_create(
671 bus_get_dma_tag(sc->vte_dev), /* parent */
672 1, 0, /* alignment, boundary */
673 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
674 BUS_SPACE_MAXADDR, /* highaddr */
675 NULL, NULL, /* filter, filterarg */
676 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
678 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
680 NULL, NULL, /* lockfunc, lockarg */
681 &sc->vte_cdata.vte_parent_tag);
683 device_printf(sc->vte_dev,
684 "could not create parent DMA tag.\n");
688 /* Create DMA tag for TX descriptor ring. */
689 error = bus_dma_tag_create(
690 sc->vte_cdata.vte_parent_tag, /* parent */
691 VTE_TX_RING_ALIGN, 0, /* alignment, boundary */
692 BUS_SPACE_MAXADDR, /* lowaddr */
693 BUS_SPACE_MAXADDR, /* highaddr */
694 NULL, NULL, /* filter, filterarg */
695 VTE_TX_RING_SZ, /* maxsize */
697 VTE_TX_RING_SZ, /* maxsegsize */
699 NULL, NULL, /* lockfunc, lockarg */
700 &sc->vte_cdata.vte_tx_ring_tag);
702 device_printf(sc->vte_dev,
703 "could not create TX ring DMA tag.\n");
707 /* Create DMA tag for RX free descriptor ring. */
708 error = bus_dma_tag_create(
709 sc->vte_cdata.vte_parent_tag, /* parent */
710 VTE_RX_RING_ALIGN, 0, /* alignment, boundary */
711 BUS_SPACE_MAXADDR, /* lowaddr */
712 BUS_SPACE_MAXADDR, /* highaddr */
713 NULL, NULL, /* filter, filterarg */
714 VTE_RX_RING_SZ, /* maxsize */
716 VTE_RX_RING_SZ, /* maxsegsize */
718 NULL, NULL, /* lockfunc, lockarg */
719 &sc->vte_cdata.vte_rx_ring_tag);
721 device_printf(sc->vte_dev,
722 "could not create RX ring DMA tag.\n");
726 /* Allocate DMA'able memory and load the DMA map for TX ring. */
727 error = bus_dmamem_alloc(sc->vte_cdata.vte_tx_ring_tag,
728 (void **)&sc->vte_cdata.vte_tx_ring,
729 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
730 &sc->vte_cdata.vte_tx_ring_map);
732 device_printf(sc->vte_dev,
733 "could not allocate DMA'able memory for TX ring.\n");
737 error = bus_dmamap_load(sc->vte_cdata.vte_tx_ring_tag,
738 sc->vte_cdata.vte_tx_ring_map, sc->vte_cdata.vte_tx_ring,
739 VTE_TX_RING_SZ, vte_dmamap_cb, &ctx, 0);
740 if (error != 0 || ctx.vte_busaddr == 0) {
741 device_printf(sc->vte_dev,
742 "could not load DMA'able memory for TX ring.\n");
745 sc->vte_cdata.vte_tx_ring_paddr = ctx.vte_busaddr;
747 /* Allocate DMA'able memory and load the DMA map for RX ring. */
748 error = bus_dmamem_alloc(sc->vte_cdata.vte_rx_ring_tag,
749 (void **)&sc->vte_cdata.vte_rx_ring,
750 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
751 &sc->vte_cdata.vte_rx_ring_map);
753 device_printf(sc->vte_dev,
754 "could not allocate DMA'able memory for RX ring.\n");
758 error = bus_dmamap_load(sc->vte_cdata.vte_rx_ring_tag,
759 sc->vte_cdata.vte_rx_ring_map, sc->vte_cdata.vte_rx_ring,
760 VTE_RX_RING_SZ, vte_dmamap_cb, &ctx, 0);
761 if (error != 0 || ctx.vte_busaddr == 0) {
762 device_printf(sc->vte_dev,
763 "could not load DMA'able memory for RX ring.\n");
766 sc->vte_cdata.vte_rx_ring_paddr = ctx.vte_busaddr;
768 /* Create TX buffer parent tag. */
769 error = bus_dma_tag_create(
770 bus_get_dma_tag(sc->vte_dev), /* parent */
771 1, 0, /* alignment, boundary */
772 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
773 BUS_SPACE_MAXADDR, /* highaddr */
774 NULL, NULL, /* filter, filterarg */
775 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
777 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
779 NULL, NULL, /* lockfunc, lockarg */
780 &sc->vte_cdata.vte_buffer_tag);
782 device_printf(sc->vte_dev,
783 "could not create parent buffer DMA tag.\n");
787 /* Create DMA tag for TX buffers. */
788 error = bus_dma_tag_create(
789 sc->vte_cdata.vte_buffer_tag, /* parent */
790 1, 0, /* alignment, boundary */
791 BUS_SPACE_MAXADDR, /* lowaddr */
792 BUS_SPACE_MAXADDR, /* highaddr */
793 NULL, NULL, /* filter, filterarg */
794 MCLBYTES, /* maxsize */
796 MCLBYTES, /* maxsegsize */
798 NULL, NULL, /* lockfunc, lockarg */
799 &sc->vte_cdata.vte_tx_tag);
801 device_printf(sc->vte_dev, "could not create TX DMA tag.\n");
805 /* Create DMA tag for RX buffers. */
806 error = bus_dma_tag_create(
807 sc->vte_cdata.vte_buffer_tag, /* parent */
808 VTE_RX_BUF_ALIGN, 0, /* alignment, boundary */
809 BUS_SPACE_MAXADDR, /* lowaddr */
810 BUS_SPACE_MAXADDR, /* highaddr */
811 NULL, NULL, /* filter, filterarg */
812 MCLBYTES, /* maxsize */
814 MCLBYTES, /* maxsegsize */
816 NULL, NULL, /* lockfunc, lockarg */
817 &sc->vte_cdata.vte_rx_tag);
819 device_printf(sc->vte_dev, "could not create RX DMA tag.\n");
822 /* Create DMA maps for TX buffers. */
823 for (i = 0; i < VTE_TX_RING_CNT; i++) {
824 txd = &sc->vte_cdata.vte_txdesc[i];
826 txd->tx_dmamap = NULL;
827 error = bus_dmamap_create(sc->vte_cdata.vte_tx_tag, 0,
830 device_printf(sc->vte_dev,
831 "could not create TX dmamap.\n");
835 /* Create DMA maps for RX buffers. */
836 if ((error = bus_dmamap_create(sc->vte_cdata.vte_rx_tag, 0,
837 &sc->vte_cdata.vte_rx_sparemap)) != 0) {
838 device_printf(sc->vte_dev,
839 "could not create spare RX dmamap.\n");
842 for (i = 0; i < VTE_RX_RING_CNT; i++) {
843 rxd = &sc->vte_cdata.vte_rxdesc[i];
845 rxd->rx_dmamap = NULL;
846 error = bus_dmamap_create(sc->vte_cdata.vte_rx_tag, 0,
849 device_printf(sc->vte_dev,
850 "could not create RX dmamap.\n");
860 vte_dma_free(struct vte_softc *sc)
862 struct vte_txdesc *txd;
863 struct vte_rxdesc *rxd;
867 if (sc->vte_cdata.vte_tx_tag != NULL) {
868 for (i = 0; i < VTE_TX_RING_CNT; i++) {
869 txd = &sc->vte_cdata.vte_txdesc[i];
870 if (txd->tx_dmamap != NULL) {
871 bus_dmamap_destroy(sc->vte_cdata.vte_tx_tag,
873 txd->tx_dmamap = NULL;
876 bus_dma_tag_destroy(sc->vte_cdata.vte_tx_tag);
877 sc->vte_cdata.vte_tx_tag = NULL;
880 if (sc->vte_cdata.vte_rx_tag != NULL) {
881 for (i = 0; i < VTE_RX_RING_CNT; i++) {
882 rxd = &sc->vte_cdata.vte_rxdesc[i];
883 if (rxd->rx_dmamap != NULL) {
884 bus_dmamap_destroy(sc->vte_cdata.vte_rx_tag,
886 rxd->rx_dmamap = NULL;
889 if (sc->vte_cdata.vte_rx_sparemap != NULL) {
890 bus_dmamap_destroy(sc->vte_cdata.vte_rx_tag,
891 sc->vte_cdata.vte_rx_sparemap);
892 sc->vte_cdata.vte_rx_sparemap = NULL;
894 bus_dma_tag_destroy(sc->vte_cdata.vte_rx_tag);
895 sc->vte_cdata.vte_rx_tag = NULL;
897 /* TX descriptor ring. */
898 if (sc->vte_cdata.vte_tx_ring_tag != NULL) {
899 if (sc->vte_cdata.vte_tx_ring_paddr != 0)
900 bus_dmamap_unload(sc->vte_cdata.vte_tx_ring_tag,
901 sc->vte_cdata.vte_tx_ring_map);
902 if (sc->vte_cdata.vte_tx_ring != NULL)
903 bus_dmamem_free(sc->vte_cdata.vte_tx_ring_tag,
904 sc->vte_cdata.vte_tx_ring,
905 sc->vte_cdata.vte_tx_ring_map);
906 sc->vte_cdata.vte_tx_ring = NULL;
907 sc->vte_cdata.vte_tx_ring_paddr = 0;
908 bus_dma_tag_destroy(sc->vte_cdata.vte_tx_ring_tag);
909 sc->vte_cdata.vte_tx_ring_tag = NULL;
912 if (sc->vte_cdata.vte_rx_ring_tag != NULL) {
913 if (sc->vte_cdata.vte_rx_ring_paddr != 0)
914 bus_dmamap_unload(sc->vte_cdata.vte_rx_ring_tag,
915 sc->vte_cdata.vte_rx_ring_map);
916 if (sc->vte_cdata.vte_rx_ring != NULL)
917 bus_dmamem_free(sc->vte_cdata.vte_rx_ring_tag,
918 sc->vte_cdata.vte_rx_ring,
919 sc->vte_cdata.vte_rx_ring_map);
920 sc->vte_cdata.vte_rx_ring = NULL;
921 sc->vte_cdata.vte_rx_ring_paddr = 0;
922 bus_dma_tag_destroy(sc->vte_cdata.vte_rx_ring_tag);
923 sc->vte_cdata.vte_rx_ring_tag = NULL;
925 if (sc->vte_cdata.vte_buffer_tag != NULL) {
926 bus_dma_tag_destroy(sc->vte_cdata.vte_buffer_tag);
927 sc->vte_cdata.vte_buffer_tag = NULL;
929 if (sc->vte_cdata.vte_parent_tag != NULL) {
930 bus_dma_tag_destroy(sc->vte_cdata.vte_parent_tag);
931 sc->vte_cdata.vte_parent_tag = NULL;
936 vte_shutdown(device_t dev)
939 return (vte_suspend(dev));
943 vte_suspend(device_t dev)
945 struct vte_softc *sc;
948 sc = device_get_softc(dev);
952 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
960 vte_resume(device_t dev)
962 struct vte_softc *sc;
965 sc = device_get_softc(dev);
969 if ((ifp->if_flags & IFF_UP) != 0) {
970 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
978 static struct vte_txdesc *
979 vte_encap(struct vte_softc *sc, struct mbuf **m_head)
981 struct vte_txdesc *txd;
983 bus_dma_segment_t txsegs[1];
984 int copy, error, nsegs, padlen;
988 M_ASSERTPKTHDR((*m_head));
990 txd = &sc->vte_cdata.vte_txdesc[sc->vte_cdata.vte_tx_prod];
993 * Controller doesn't auto-pad, so we have to make sure pad
994 * short frames out to the minimum frame length.
996 if (m->m_pkthdr.len < VTE_MIN_FRAMELEN)
997 padlen = VTE_MIN_FRAMELEN - m->m_pkthdr.len;
1002 * Controller does not support multi-fragmented TX buffers.
1003 * Controller spends most of its TX processing time in
1004 * de-fragmenting TX buffers. Either faster CPU or more
1005 * advanced controller DMA engine is required to speed up
1006 * TX path processing.
1007 * To mitigate the de-fragmenting issue, perform deep copy
1008 * from fragmented mbuf chains to a pre-allocated mbuf
1009 * cluster with extra cost of kernel memory. For frames
1010 * that is composed of single TX buffer, the deep copy is
1013 if (tx_deep_copy != 0) {
1015 if (m->m_next != NULL)
1017 if (padlen > 0 && (M_WRITABLE(m) == 0 ||
1018 padlen > M_TRAILINGSPACE(m)))
1021 /* Avoid expensive m_defrag(9) and do deep copy. */
1022 n = sc->vte_cdata.vte_txmbufs[sc->vte_cdata.vte_tx_prod];
1023 m_copydata(m, 0, m->m_pkthdr.len, mtod(n, char *));
1024 n->m_pkthdr.len = m->m_pkthdr.len;
1025 n->m_len = m->m_pkthdr.len;
1027 txd->tx_flags |= VTE_TXMBUF;
1031 /* Zero out the bytes in the pad area. */
1032 bzero(mtod(m, char *) + m->m_pkthdr.len, padlen);
1033 m->m_pkthdr.len += padlen;
1034 m->m_len = m->m_pkthdr.len;
1037 if (M_WRITABLE(m) == 0) {
1038 if (m->m_next != NULL || padlen > 0) {
1039 /* Get a writable copy. */
1040 m = m_dup(*m_head, M_NOWAIT);
1041 /* Release original mbuf chains. */
1051 if (m->m_next != NULL) {
1052 m = m_defrag(*m_head, M_NOWAIT);
1062 if (M_TRAILINGSPACE(m) < padlen) {
1063 m = m_defrag(*m_head, M_NOWAIT);
1071 /* Zero out the bytes in the pad area. */
1072 bzero(mtod(m, char *) + m->m_pkthdr.len, padlen);
1073 m->m_pkthdr.len += padlen;
1074 m->m_len = m->m_pkthdr.len;
1078 error = bus_dmamap_load_mbuf_sg(sc->vte_cdata.vte_tx_tag,
1079 txd->tx_dmamap, m, txsegs, &nsegs, 0);
1081 txd->tx_flags &= ~VTE_TXMBUF;
1084 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1085 bus_dmamap_sync(sc->vte_cdata.vte_tx_tag, txd->tx_dmamap,
1086 BUS_DMASYNC_PREWRITE);
1088 txd->tx_desc->dtlen = htole16(VTE_TX_LEN(txsegs[0].ds_len));
1089 txd->tx_desc->dtbp = htole32(txsegs[0].ds_addr);
1090 sc->vte_cdata.vte_tx_cnt++;
1091 /* Update producer index. */
1092 VTE_DESC_INC(sc->vte_cdata.vte_tx_prod, VTE_TX_RING_CNT);
1094 /* Finally hand over ownership to controller. */
1095 txd->tx_desc->dtst = htole16(VTE_DTST_TX_OWN);
1102 vte_start(struct ifnet *ifp)
1104 struct vte_softc *sc;
1108 vte_start_locked(sc);
1113 vte_start_locked(struct vte_softc *sc)
1116 struct vte_txdesc *txd;
1117 struct mbuf *m_head;
1122 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1123 IFF_DRV_RUNNING || (sc->vte_flags & VTE_FLAG_LINK) == 0)
1126 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) {
1127 /* Reserve one free TX descriptor. */
1128 if (sc->vte_cdata.vte_tx_cnt >= VTE_TX_RING_CNT - 1) {
1129 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1132 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
1136 * Pack the data into the transmit ring. If we
1137 * don't have room, set the OACTIVE flag and wait
1138 * for the NIC to drain the ring.
1140 if ((txd = vte_encap(sc, &m_head)) == NULL) {
1142 IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
1148 * If there's a BPF listener, bounce a copy of this frame
1151 ETHER_BPF_MTAP(ifp, m_head);
1152 /* Free consumed TX frame. */
1153 if ((txd->tx_flags & VTE_TXMBUF) != 0)
1158 bus_dmamap_sync(sc->vte_cdata.vte_tx_ring_tag,
1159 sc->vte_cdata.vte_tx_ring_map, BUS_DMASYNC_PREREAD |
1160 BUS_DMASYNC_PREWRITE);
1161 CSR_WRITE_2(sc, VTE_TX_POLL, TX_POLL_START);
1162 sc->vte_watchdog_timer = VTE_TX_TIMEOUT;
1167 vte_watchdog(struct vte_softc *sc)
1171 VTE_LOCK_ASSERT(sc);
1173 if (sc->vte_watchdog_timer == 0 || --sc->vte_watchdog_timer)
1177 if_printf(sc->vte_ifp, "watchdog timeout -- resetting\n");
1178 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1179 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1180 vte_init_locked(sc);
1181 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1182 vte_start_locked(sc);
1186 vte_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1188 struct vte_softc *sc;
1190 struct mii_data *mii;
1194 ifr = (struct ifreq *)data;
1199 if ((ifp->if_flags & IFF_UP) != 0) {
1200 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
1201 ((ifp->if_flags ^ sc->vte_if_flags) &
1202 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
1205 vte_init_locked(sc);
1206 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1208 sc->vte_if_flags = ifp->if_flags;
1214 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1220 mii = device_get_softc(sc->vte_miibus);
1221 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
1224 error = ether_ioctl(ifp, cmd, data);
1232 vte_mac_config(struct vte_softc *sc)
1234 struct mii_data *mii;
1237 VTE_LOCK_ASSERT(sc);
1239 mii = device_get_softc(sc->vte_miibus);
1240 mcr = CSR_READ_2(sc, VTE_MCR0);
1241 mcr &= ~(MCR0_FC_ENB | MCR0_FULL_DUPLEX);
1242 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
1243 mcr |= MCR0_FULL_DUPLEX;
1245 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
1248 * The data sheet is not clear whether the controller
1249 * honors received pause frames or not. The is no
1250 * separate control bit for RX pause frame so just
1251 * enable MCR0_FC_ENB bit.
1253 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
1257 CSR_WRITE_2(sc, VTE_MCR0, mcr);
1261 vte_stats_clear(struct vte_softc *sc)
1264 /* Reading counter registers clears its contents. */
1265 CSR_READ_2(sc, VTE_CNT_RX_DONE);
1266 CSR_READ_2(sc, VTE_CNT_MECNT0);
1267 CSR_READ_2(sc, VTE_CNT_MECNT1);
1268 CSR_READ_2(sc, VTE_CNT_MECNT2);
1269 CSR_READ_2(sc, VTE_CNT_MECNT3);
1270 CSR_READ_2(sc, VTE_CNT_TX_DONE);
1271 CSR_READ_2(sc, VTE_CNT_MECNT4);
1272 CSR_READ_2(sc, VTE_CNT_PAUSE);
1276 vte_stats_update(struct vte_softc *sc)
1278 struct vte_hw_stats *stat;
1281 VTE_LOCK_ASSERT(sc);
1283 stat = &sc->vte_stats;
1285 CSR_READ_2(sc, VTE_MECISR);
1287 stat->rx_frames += CSR_READ_2(sc, VTE_CNT_RX_DONE);
1288 value = CSR_READ_2(sc, VTE_CNT_MECNT0);
1289 stat->rx_bcast_frames += (value >> 8);
1290 stat->rx_mcast_frames += (value & 0xFF);
1291 value = CSR_READ_2(sc, VTE_CNT_MECNT1);
1292 stat->rx_runts += (value >> 8);
1293 stat->rx_crcerrs += (value & 0xFF);
1294 value = CSR_READ_2(sc, VTE_CNT_MECNT2);
1295 stat->rx_long_frames += (value & 0xFF);
1296 value = CSR_READ_2(sc, VTE_CNT_MECNT3);
1297 stat->rx_fifo_full += (value >> 8);
1298 stat->rx_desc_unavail += (value & 0xFF);
1301 stat->tx_frames += CSR_READ_2(sc, VTE_CNT_TX_DONE);
1302 value = CSR_READ_2(sc, VTE_CNT_MECNT4);
1303 stat->tx_underruns += (value >> 8);
1304 stat->tx_late_colls += (value & 0xFF);
1306 value = CSR_READ_2(sc, VTE_CNT_PAUSE);
1307 stat->tx_pause_frames += (value >> 8);
1308 stat->rx_pause_frames += (value & 0xFF);
1312 vte_get_counter(struct ifnet *ifp, ift_counter cnt)
1314 struct vte_softc *sc;
1315 struct vte_hw_stats *stat;
1317 sc = if_getsoftc(ifp);
1318 stat = &sc->vte_stats;
1321 case IFCOUNTER_OPACKETS:
1322 return (stat->tx_frames);
1323 case IFCOUNTER_COLLISIONS:
1324 return (stat->tx_late_colls);
1325 case IFCOUNTER_OERRORS:
1326 return (stat->tx_late_colls + stat->tx_underruns);
1327 case IFCOUNTER_IPACKETS:
1328 return (stat->rx_frames);
1329 case IFCOUNTER_IERRORS:
1330 return (stat->rx_crcerrs + stat->rx_runts +
1331 stat->rx_long_frames + stat->rx_fifo_full);
1333 return (if_get_counter_default(ifp, cnt));
1340 struct vte_softc *sc;
1345 sc = (struct vte_softc *)arg;
1349 /* Reading VTE_MISR acknowledges interrupts. */
1350 status = CSR_READ_2(sc, VTE_MISR);
1351 if ((status & VTE_INTRS) == 0) {
1357 /* Disable interrupts. */
1358 CSR_WRITE_2(sc, VTE_MIER, 0);
1359 for (n = 8; (status & VTE_INTRS) != 0;) {
1360 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1362 if ((status & (MISR_RX_DONE | MISR_RX_DESC_UNAVAIL |
1363 MISR_RX_FIFO_FULL)) != 0)
1365 if ((status & MISR_TX_DONE) != 0)
1367 if ((status & MISR_EVENT_CNT_OFLOW) != 0)
1368 vte_stats_update(sc);
1369 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1370 vte_start_locked(sc);
1372 status = CSR_READ_2(sc, VTE_MISR);
1377 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
1378 /* Re-enable interrupts. */
1379 CSR_WRITE_2(sc, VTE_MIER, VTE_INTRS);
1385 vte_txeof(struct vte_softc *sc)
1388 struct vte_txdesc *txd;
1392 VTE_LOCK_ASSERT(sc);
1396 if (sc->vte_cdata.vte_tx_cnt == 0)
1398 bus_dmamap_sync(sc->vte_cdata.vte_tx_ring_tag,
1399 sc->vte_cdata.vte_tx_ring_map, BUS_DMASYNC_POSTREAD |
1400 BUS_DMASYNC_POSTWRITE);
1401 cons = sc->vte_cdata.vte_tx_cons;
1403 * Go through our TX list and free mbufs for those
1404 * frames which have been transmitted.
1406 for (prog = 0; sc->vte_cdata.vte_tx_cnt > 0; prog++) {
1407 txd = &sc->vte_cdata.vte_txdesc[cons];
1408 status = le16toh(txd->tx_desc->dtst);
1409 if ((status & VTE_DTST_TX_OWN) != 0)
1411 sc->vte_cdata.vte_tx_cnt--;
1412 /* Reclaim transmitted mbufs. */
1413 bus_dmamap_sync(sc->vte_cdata.vte_tx_tag, txd->tx_dmamap,
1414 BUS_DMASYNC_POSTWRITE);
1415 bus_dmamap_unload(sc->vte_cdata.vte_tx_tag, txd->tx_dmamap);
1416 if ((txd->tx_flags & VTE_TXMBUF) == 0)
1418 txd->tx_flags &= ~VTE_TXMBUF;
1421 VTE_DESC_INC(cons, VTE_TX_RING_CNT);
1425 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1426 sc->vte_cdata.vte_tx_cons = cons;
1428 * Unarm watchdog timer only when there is no pending
1429 * frames in TX queue.
1431 if (sc->vte_cdata.vte_tx_cnt == 0)
1432 sc->vte_watchdog_timer = 0;
1437 vte_newbuf(struct vte_softc *sc, struct vte_rxdesc *rxd)
1440 bus_dma_segment_t segs[1];
1444 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1447 m->m_len = m->m_pkthdr.len = MCLBYTES;
1448 m_adj(m, sizeof(uint32_t));
1450 if (bus_dmamap_load_mbuf_sg(sc->vte_cdata.vte_rx_tag,
1451 sc->vte_cdata.vte_rx_sparemap, m, segs, &nsegs, 0) != 0) {
1455 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1457 if (rxd->rx_m != NULL) {
1458 bus_dmamap_sync(sc->vte_cdata.vte_rx_tag, rxd->rx_dmamap,
1459 BUS_DMASYNC_POSTREAD);
1460 bus_dmamap_unload(sc->vte_cdata.vte_rx_tag, rxd->rx_dmamap);
1462 map = rxd->rx_dmamap;
1463 rxd->rx_dmamap = sc->vte_cdata.vte_rx_sparemap;
1464 sc->vte_cdata.vte_rx_sparemap = map;
1465 bus_dmamap_sync(sc->vte_cdata.vte_rx_tag, rxd->rx_dmamap,
1466 BUS_DMASYNC_PREREAD);
1468 rxd->rx_desc->drbp = htole32(segs[0].ds_addr);
1469 rxd->rx_desc->drlen = htole16(VTE_RX_LEN(segs[0].ds_len));
1470 rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN);
1476 * It's not supposed to see this controller on strict-alignment
1477 * architectures but make it work for completeness.
1479 #ifndef __NO_STRICT_ALIGNMENT
1480 static struct mbuf *
1481 vte_fixup_rx(struct ifnet *ifp, struct mbuf *m)
1483 uint16_t *src, *dst;
1486 src = mtod(m, uint16_t *);
1489 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
1491 m->m_data -= ETHER_ALIGN;
1497 vte_rxeof(struct vte_softc *sc)
1500 struct vte_rxdesc *rxd;
1502 uint16_t status, total_len;
1505 bus_dmamap_sync(sc->vte_cdata.vte_rx_ring_tag,
1506 sc->vte_cdata.vte_rx_ring_map, BUS_DMASYNC_POSTREAD |
1507 BUS_DMASYNC_POSTWRITE);
1508 cons = sc->vte_cdata.vte_rx_cons;
1510 for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0; prog++,
1511 VTE_DESC_INC(cons, VTE_RX_RING_CNT)) {
1512 rxd = &sc->vte_cdata.vte_rxdesc[cons];
1513 status = le16toh(rxd->rx_desc->drst);
1514 if ((status & VTE_DRST_RX_OWN) != 0)
1516 total_len = VTE_RX_LEN(le16toh(rxd->rx_desc->drlen));
1518 if ((status & VTE_DRST_RX_OK) == 0) {
1519 /* Discard errored frame. */
1520 rxd->rx_desc->drlen =
1521 htole16(MCLBYTES - sizeof(uint32_t));
1522 rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN);
1525 if (vte_newbuf(sc, rxd) != 0) {
1526 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
1527 rxd->rx_desc->drlen =
1528 htole16(MCLBYTES - sizeof(uint32_t));
1529 rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN);
1534 * It seems there is no way to strip FCS bytes.
1536 m->m_pkthdr.len = m->m_len = total_len - ETHER_CRC_LEN;
1537 m->m_pkthdr.rcvif = ifp;
1538 #ifndef __NO_STRICT_ALIGNMENT
1539 vte_fixup_rx(ifp, m);
1542 (*ifp->if_input)(ifp, m);
1547 /* Update the consumer index. */
1548 sc->vte_cdata.vte_rx_cons = cons;
1550 * Sync updated RX descriptors such that controller see
1551 * modified RX buffer addresses.
1553 bus_dmamap_sync(sc->vte_cdata.vte_rx_ring_tag,
1554 sc->vte_cdata.vte_rx_ring_map,
1555 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1558 * Update residue counter. Controller does not
1559 * keep track of number of available RX descriptors
1560 * such that driver should have to update VTE_MRDCR
1561 * to make controller know how many free RX
1562 * descriptors were added to controller. This is
1563 * a similar mechanism used in VIA velocity
1564 * controllers and it indicates controller just
1565 * polls OWN bit of current RX descriptor pointer.
1566 * A couple of severe issues were seen on sample
1567 * board where the controller continuously emits TX
1568 * pause frames once RX pause threshold crossed.
1569 * Once triggered it never recovered form that
1570 * state, I couldn't find a way to make it back to
1571 * work at least. This issue effectively
1572 * disconnected the system from network. Also, the
1573 * controller used 00:00:00:00:00:00 as source
1574 * station address of TX pause frame. Probably this
1575 * is one of reason why vendor recommends not to
1576 * enable flow control on R6040 controller.
1578 CSR_WRITE_2(sc, VTE_MRDCR, prog |
1579 (((VTE_RX_RING_CNT * 2) / 10) <<
1580 VTE_MRDCR_RX_PAUSE_THRESH_SHIFT));
1588 struct vte_softc *sc;
1589 struct mii_data *mii;
1591 sc = (struct vte_softc *)arg;
1593 VTE_LOCK_ASSERT(sc);
1595 mii = device_get_softc(sc->vte_miibus);
1597 vte_stats_update(sc);
1600 callout_reset(&sc->vte_tick_ch, hz, vte_tick, sc);
1604 vte_reset(struct vte_softc *sc)
1609 mcr = CSR_READ_2(sc, VTE_MCR1);
1610 CSR_WRITE_2(sc, VTE_MCR1, mcr | MCR1_MAC_RESET);
1611 for (i = VTE_RESET_TIMEOUT; i > 0; i--) {
1613 if ((CSR_READ_2(sc, VTE_MCR1) & MCR1_MAC_RESET) == 0)
1617 device_printf(sc->vte_dev, "reset timeout(0x%04x)!\n", mcr);
1619 * Follow the guide of vendor recommended way to reset MAC.
1620 * Vendor confirms relying on MCR1_MAC_RESET of VTE_MCR1 is
1621 * not reliable so manually reset internal state machine.
1623 CSR_WRITE_2(sc, VTE_MACSM, 0x0002);
1624 CSR_WRITE_2(sc, VTE_MACSM, 0);
1631 struct vte_softc *sc;
1633 sc = (struct vte_softc *)xsc;
1635 vte_init_locked(sc);
1640 vte_init_locked(struct vte_softc *sc)
1646 VTE_LOCK_ASSERT(sc);
1650 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
1653 * Cancel any pending I/O.
1657 * Reset the chip to a known state.
1661 /* Initialize RX descriptors. */
1662 if (vte_init_rx_ring(sc) != 0) {
1663 device_printf(sc->vte_dev, "no memory for RX buffers.\n");
1667 if (vte_init_tx_ring(sc) != 0) {
1668 device_printf(sc->vte_dev, "no memory for TX buffers.\n");
1674 * Reprogram the station address. Controller supports up
1675 * to 4 different station addresses so driver programs the
1676 * first station address as its own ethernet address and
1677 * configure the remaining three addresses as perfect
1678 * multicast addresses.
1680 eaddr = IF_LLADDR(sc->vte_ifp);
1681 CSR_WRITE_2(sc, VTE_MID0L, eaddr[1] << 8 | eaddr[0]);
1682 CSR_WRITE_2(sc, VTE_MID0M, eaddr[3] << 8 | eaddr[2]);
1683 CSR_WRITE_2(sc, VTE_MID0H, eaddr[5] << 8 | eaddr[4]);
1685 /* Set TX descriptor base addresses. */
1686 paddr = sc->vte_cdata.vte_tx_ring_paddr;
1687 CSR_WRITE_2(sc, VTE_MTDSA1, paddr >> 16);
1688 CSR_WRITE_2(sc, VTE_MTDSA0, paddr & 0xFFFF);
1689 /* Set RX descriptor base addresses. */
1690 paddr = sc->vte_cdata.vte_rx_ring_paddr;
1691 CSR_WRITE_2(sc, VTE_MRDSA1, paddr >> 16);
1692 CSR_WRITE_2(sc, VTE_MRDSA0, paddr & 0xFFFF);
1694 * Initialize RX descriptor residue counter and set RX
1695 * pause threshold to 20% of available RX descriptors.
1696 * See comments on vte_rxeof() for details on flow control
1699 CSR_WRITE_2(sc, VTE_MRDCR, (VTE_RX_RING_CNT & VTE_MRDCR_RESIDUE_MASK) |
1700 (((VTE_RX_RING_CNT * 2) / 10) << VTE_MRDCR_RX_PAUSE_THRESH_SHIFT));
1703 * Always use maximum frame size that controller can
1704 * support. Otherwise received frames that has longer
1705 * frame length than vte(4) MTU would be silently dropped
1706 * in controller. This would break path-MTU discovery as
1707 * sender wouldn't get any responses from receiver. The
1708 * RX buffer size should be multiple of 4.
1709 * Note, jumbo frames are silently ignored by controller
1710 * and even MAC counters do not detect them.
1712 CSR_WRITE_2(sc, VTE_MRBSR, VTE_RX_BUF_SIZE_MAX);
1714 /* Configure FIFO. */
1715 CSR_WRITE_2(sc, VTE_MBCR, MBCR_FIFO_XFER_LENGTH_16 |
1716 MBCR_TX_FIFO_THRESH_64 | MBCR_RX_FIFO_THRESH_16 |
1717 MBCR_SDRAM_BUS_REQ_TIMER_DEFAULT);
1720 * Configure TX/RX MACs. Actual resolved duplex and flow
1721 * control configuration is done after detecting a valid
1722 * link. Note, we don't generate early interrupt here
1723 * as well since FreeBSD does not have interrupt latency
1724 * problems like Windows.
1726 CSR_WRITE_2(sc, VTE_MCR0, MCR0_ACCPT_LONG_PKT);
1728 * We manually keep track of PHY status changes to
1729 * configure resolved duplex and flow control since only
1730 * duplex configuration can be automatically reflected to
1733 CSR_WRITE_2(sc, VTE_MCR1, MCR1_PKT_LENGTH_1537 |
1734 MCR1_EXCESS_COL_RETRY_16);
1736 /* Initialize RX filter. */
1739 /* Disable TX/RX interrupt moderation control. */
1740 CSR_WRITE_2(sc, VTE_MRICR, 0);
1741 CSR_WRITE_2(sc, VTE_MTICR, 0);
1743 /* Enable MAC event counter interrupts. */
1744 CSR_WRITE_2(sc, VTE_MECIER, VTE_MECIER_INTRS);
1745 /* Clear MAC statistics. */
1746 vte_stats_clear(sc);
1748 /* Acknowledge all pending interrupts and clear it. */
1749 CSR_WRITE_2(sc, VTE_MIER, VTE_INTRS);
1750 CSR_WRITE_2(sc, VTE_MISR, 0);
1752 sc->vte_flags &= ~VTE_FLAG_LINK;
1753 /* Switch to the current media. */
1754 vte_mediachange_locked(ifp);
1756 callout_reset(&sc->vte_tick_ch, hz, vte_tick, sc);
1758 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1759 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1763 vte_stop(struct vte_softc *sc)
1766 struct vte_txdesc *txd;
1767 struct vte_rxdesc *rxd;
1770 VTE_LOCK_ASSERT(sc);
1772 * Mark the interface down and cancel the watchdog timer.
1775 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1776 sc->vte_flags &= ~VTE_FLAG_LINK;
1777 callout_stop(&sc->vte_tick_ch);
1778 sc->vte_watchdog_timer = 0;
1779 vte_stats_update(sc);
1780 /* Disable interrupts. */
1781 CSR_WRITE_2(sc, VTE_MIER, 0);
1782 CSR_WRITE_2(sc, VTE_MECIER, 0);
1783 /* Stop RX/TX MACs. */
1785 /* Clear interrupts. */
1786 CSR_READ_2(sc, VTE_MISR);
1788 * Free TX/RX mbufs still in the queues.
1790 for (i = 0; i < VTE_RX_RING_CNT; i++) {
1791 rxd = &sc->vte_cdata.vte_rxdesc[i];
1792 if (rxd->rx_m != NULL) {
1793 bus_dmamap_sync(sc->vte_cdata.vte_rx_tag,
1794 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
1795 bus_dmamap_unload(sc->vte_cdata.vte_rx_tag,
1801 for (i = 0; i < VTE_TX_RING_CNT; i++) {
1802 txd = &sc->vte_cdata.vte_txdesc[i];
1803 if (txd->tx_m != NULL) {
1804 bus_dmamap_sync(sc->vte_cdata.vte_tx_tag,
1805 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
1806 bus_dmamap_unload(sc->vte_cdata.vte_tx_tag,
1808 if ((txd->tx_flags & VTE_TXMBUF) == 0)
1811 txd->tx_flags &= ~VTE_TXMBUF;
1814 /* Free TX mbuf pools used for deep copy. */
1815 for (i = 0; i < VTE_TX_RING_CNT; i++) {
1816 if (sc->vte_cdata.vte_txmbufs[i] != NULL) {
1817 m_freem(sc->vte_cdata.vte_txmbufs[i]);
1818 sc->vte_cdata.vte_txmbufs[i] = NULL;
1824 vte_start_mac(struct vte_softc *sc)
1829 VTE_LOCK_ASSERT(sc);
1831 /* Enable RX/TX MACs. */
1832 mcr = CSR_READ_2(sc, VTE_MCR0);
1833 if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) !=
1834 (MCR0_RX_ENB | MCR0_TX_ENB)) {
1835 mcr |= MCR0_RX_ENB | MCR0_TX_ENB;
1836 CSR_WRITE_2(sc, VTE_MCR0, mcr);
1837 for (i = VTE_TIMEOUT; i > 0; i--) {
1838 mcr = CSR_READ_2(sc, VTE_MCR0);
1839 if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) ==
1840 (MCR0_RX_ENB | MCR0_TX_ENB))
1845 device_printf(sc->vte_dev,
1846 "could not enable RX/TX MAC(0x%04x)!\n", mcr);
1851 vte_stop_mac(struct vte_softc *sc)
1856 VTE_LOCK_ASSERT(sc);
1858 /* Disable RX/TX MACs. */
1859 mcr = CSR_READ_2(sc, VTE_MCR0);
1860 if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) != 0) {
1861 mcr &= ~(MCR0_RX_ENB | MCR0_TX_ENB);
1862 CSR_WRITE_2(sc, VTE_MCR0, mcr);
1863 for (i = VTE_TIMEOUT; i > 0; i--) {
1864 mcr = CSR_READ_2(sc, VTE_MCR0);
1865 if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) == 0)
1870 device_printf(sc->vte_dev,
1871 "could not disable RX/TX MAC(0x%04x)!\n", mcr);
1876 vte_init_tx_ring(struct vte_softc *sc)
1878 struct vte_tx_desc *desc;
1879 struct vte_txdesc *txd;
1883 VTE_LOCK_ASSERT(sc);
1885 sc->vte_cdata.vte_tx_prod = 0;
1886 sc->vte_cdata.vte_tx_cons = 0;
1887 sc->vte_cdata.vte_tx_cnt = 0;
1889 /* Pre-allocate TX mbufs for deep copy. */
1890 if (tx_deep_copy != 0) {
1891 for (i = 0; i < VTE_TX_RING_CNT; i++) {
1892 sc->vte_cdata.vte_txmbufs[i] = m_getcl(M_NOWAIT,
1894 if (sc->vte_cdata.vte_txmbufs[i] == NULL)
1896 sc->vte_cdata.vte_txmbufs[i]->m_pkthdr.len = MCLBYTES;
1897 sc->vte_cdata.vte_txmbufs[i]->m_len = MCLBYTES;
1900 desc = sc->vte_cdata.vte_tx_ring;
1901 bzero(desc, VTE_TX_RING_SZ);
1902 for (i = 0; i < VTE_TX_RING_CNT; i++) {
1903 txd = &sc->vte_cdata.vte_txdesc[i];
1905 if (i != VTE_TX_RING_CNT - 1)
1906 addr = sc->vte_cdata.vte_tx_ring_paddr +
1907 sizeof(struct vte_tx_desc) * (i + 1);
1909 addr = sc->vte_cdata.vte_tx_ring_paddr +
1910 sizeof(struct vte_tx_desc) * 0;
1911 desc = &sc->vte_cdata.vte_tx_ring[i];
1912 desc->dtnp = htole32(addr);
1913 txd->tx_desc = desc;
1916 bus_dmamap_sync(sc->vte_cdata.vte_tx_ring_tag,
1917 sc->vte_cdata.vte_tx_ring_map, BUS_DMASYNC_PREREAD |
1918 BUS_DMASYNC_PREWRITE);
1923 vte_init_rx_ring(struct vte_softc *sc)
1925 struct vte_rx_desc *desc;
1926 struct vte_rxdesc *rxd;
1930 VTE_LOCK_ASSERT(sc);
1932 sc->vte_cdata.vte_rx_cons = 0;
1933 desc = sc->vte_cdata.vte_rx_ring;
1934 bzero(desc, VTE_RX_RING_SZ);
1935 for (i = 0; i < VTE_RX_RING_CNT; i++) {
1936 rxd = &sc->vte_cdata.vte_rxdesc[i];
1938 if (i != VTE_RX_RING_CNT - 1)
1939 addr = sc->vte_cdata.vte_rx_ring_paddr +
1940 sizeof(struct vte_rx_desc) * (i + 1);
1942 addr = sc->vte_cdata.vte_rx_ring_paddr +
1943 sizeof(struct vte_rx_desc) * 0;
1944 desc = &sc->vte_cdata.vte_rx_ring[i];
1945 desc->drnp = htole32(addr);
1946 rxd->rx_desc = desc;
1947 if (vte_newbuf(sc, rxd) != 0)
1951 bus_dmamap_sync(sc->vte_cdata.vte_rx_ring_tag,
1952 sc->vte_cdata.vte_rx_ring_map, BUS_DMASYNC_PREREAD |
1953 BUS_DMASYNC_PREWRITE);
1959 vte_rxfilter(struct vte_softc *sc)
1962 struct ifmultiaddr *ifma;
1965 uint16_t rxfilt_perf[VTE_RXFILT_PERFECT_CNT][3];
1966 uint16_t mchash[4], mcr;
1969 VTE_LOCK_ASSERT(sc);
1973 bzero(mchash, sizeof(mchash));
1974 for (i = 0; i < VTE_RXFILT_PERFECT_CNT; i++) {
1975 rxfilt_perf[i][0] = 0xFFFF;
1976 rxfilt_perf[i][1] = 0xFFFF;
1977 rxfilt_perf[i][2] = 0xFFFF;
1980 mcr = CSR_READ_2(sc, VTE_MCR0);
1981 mcr &= ~(MCR0_PROMISC | MCR0_MULTICAST);
1982 mcr |= MCR0_BROADCAST_DIS;
1983 if ((ifp->if_flags & IFF_BROADCAST) != 0)
1984 mcr &= ~MCR0_BROADCAST_DIS;
1985 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
1986 if ((ifp->if_flags & IFF_PROMISC) != 0)
1987 mcr |= MCR0_PROMISC;
1988 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
1989 mcr |= MCR0_MULTICAST;
1998 if_maddr_rlock(ifp);
1999 TAILQ_FOREACH(ifma, &sc->vte_ifp->if_multiaddrs, ifma_link) {
2000 if (ifma->ifma_addr->sa_family != AF_LINK)
2003 * Program the first 3 multicast groups into
2004 * the perfect filter. For all others, use the
2007 if (nperf < VTE_RXFILT_PERFECT_CNT) {
2008 eaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
2009 rxfilt_perf[nperf][0] = eaddr[1] << 8 | eaddr[0];
2010 rxfilt_perf[nperf][1] = eaddr[3] << 8 | eaddr[2];
2011 rxfilt_perf[nperf][2] = eaddr[5] << 8 | eaddr[4];
2015 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
2016 ifma->ifma_addr), ETHER_ADDR_LEN);
2017 mchash[crc >> 30] |= 1 << ((crc >> 26) & 0x0F);
2019 if_maddr_runlock(ifp);
2020 if (mchash[0] != 0 || mchash[1] != 0 || mchash[2] != 0 ||
2022 mcr |= MCR0_MULTICAST;
2025 /* Program multicast hash table. */
2026 CSR_WRITE_2(sc, VTE_MAR0, mchash[0]);
2027 CSR_WRITE_2(sc, VTE_MAR1, mchash[1]);
2028 CSR_WRITE_2(sc, VTE_MAR2, mchash[2]);
2029 CSR_WRITE_2(sc, VTE_MAR3, mchash[3]);
2030 /* Program perfect filter table. */
2031 for (i = 0; i < VTE_RXFILT_PERFECT_CNT; i++) {
2032 CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 0,
2034 CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 2,
2036 CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 4,
2039 CSR_WRITE_2(sc, VTE_MCR0, mcr);
2040 CSR_READ_2(sc, VTE_MCR0);
2044 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
2050 value = *(int *)arg1;
2051 error = sysctl_handle_int(oidp, &value, 0, req);
2052 if (error || req->newptr == NULL)
2054 if (value < low || value > high)
2056 *(int *)arg1 = value;
2062 sysctl_hw_vte_int_mod(SYSCTL_HANDLER_ARGS)
2065 return (sysctl_int_range(oidp, arg1, arg2, req,
2066 VTE_IM_BUNDLE_MIN, VTE_IM_BUNDLE_MAX));