2 * Copyright (C) 2001 Eduardo Horvath.
3 * Copyright (c) 2001-2003 Thomas Moestl
4 * Copyright (c) 2007-2009 Marius Strobl <marius@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, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * from: NetBSD: gem.c,v 1.21 2002/06/01 23:50:58 lukem Exp
29 * from: FreeBSD: if_gem.c 182060 2008-08-23 15:03:26Z marius
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
36 * driver for Sun Cassini/Cassini+ and National Semiconductor DP83065
37 * Saturn Gigabit Ethernet controllers
44 #include <sys/param.h>
45 #include <sys/systm.h>
47 #include <sys/callout.h>
48 #include <sys/endian.h>
50 #include <sys/malloc.h>
51 #include <sys/kernel.h>
53 #include <sys/module.h>
54 #include <sys/mutex.h>
55 #include <sys/refcount.h>
56 #include <sys/resource.h>
58 #include <sys/socket.h>
59 #include <sys/sockio.h>
60 #include <sys/taskqueue.h>
63 #include <net/ethernet.h>
65 #include <net/if_arp.h>
66 #include <net/if_dl.h>
67 #include <net/if_media.h>
68 #include <net/if_types.h>
69 #include <net/if_vlan_var.h>
71 #include <netinet/in.h>
72 #include <netinet/in_systm.h>
73 #include <netinet/ip.h>
74 #include <netinet/tcp.h>
75 #include <netinet/udp.h>
77 #include <machine/bus.h>
78 #if defined(__powerpc__) || defined(__sparc64__)
79 #include <dev/ofw/ofw_bus.h>
80 #include <dev/ofw/openfirm.h>
81 #include <machine/ofw_machdep.h>
83 #include <machine/resource.h>
85 #include <dev/mii/mii.h>
86 #include <dev/mii/miivar.h>
88 #include <dev/cas/if_casreg.h>
89 #include <dev/cas/if_casvar.h>
91 #include <dev/pci/pcireg.h>
92 #include <dev/pci/pcivar.h>
94 #include "miibus_if.h"
96 #define RINGASSERT(n , min, max) \
97 CTASSERT(powerof2(n) && (n) >= (min) && (n) <= (max))
99 RINGASSERT(CAS_NRXCOMP, 128, 32768);
100 RINGASSERT(CAS_NRXDESC, 32, 8192);
101 RINGASSERT(CAS_NRXDESC2, 32, 8192);
102 RINGASSERT(CAS_NTXDESC, 32, 8192);
106 #define CCDASSERT(m, a) \
107 CTASSERT((offsetof(struct cas_control_data, m) & ((a) - 1)) == 0)
109 CCDASSERT(ccd_rxcomps, CAS_RX_COMP_ALIGN);
110 CCDASSERT(ccd_rxdescs, CAS_RX_DESC_ALIGN);
111 CCDASSERT(ccd_rxdescs2, CAS_RX_DESC_ALIGN);
115 #define CAS_TRIES 10000
118 * According to documentation, the hardware has support for basic TCP
119 * checksum offloading only, in practice this can be also used for UDP
120 * however (i.e. the problem of previous Sun NICs that a checksum of 0x0
121 * is not converted to 0xffff no longer exists).
123 #define CAS_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
125 static inline void cas_add_rxdesc(struct cas_softc *sc, u_int idx);
126 static int cas_attach(struct cas_softc *sc);
127 static int cas_bitwait(struct cas_softc *sc, bus_addr_t r, uint32_t clr,
129 static void cas_cddma_callback(void *xsc, bus_dma_segment_t *segs,
130 int nsegs, int error);
131 static void cas_detach(struct cas_softc *sc);
132 static int cas_disable_rx(struct cas_softc *sc);
133 static int cas_disable_tx(struct cas_softc *sc);
134 static void cas_eint(struct cas_softc *sc, u_int status);
135 static void cas_free(void *arg1, void* arg2);
136 static void cas_init(void *xsc);
137 static void cas_init_locked(struct cas_softc *sc);
138 static void cas_init_regs(struct cas_softc *sc);
139 static int cas_intr(void *v);
140 static void cas_intr_task(void *arg, int pending __unused);
141 static int cas_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
142 static int cas_load_txmbuf(struct cas_softc *sc, struct mbuf **m_head);
143 static int cas_mediachange(struct ifnet *ifp);
144 static void cas_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr);
145 static void cas_meminit(struct cas_softc *sc);
146 static void cas_mifinit(struct cas_softc *sc);
147 static int cas_mii_readreg(device_t dev, int phy, int reg);
148 static void cas_mii_statchg(device_t dev);
149 static int cas_mii_writereg(device_t dev, int phy, int reg, int val);
150 static void cas_reset(struct cas_softc *sc);
151 static int cas_reset_rx(struct cas_softc *sc);
152 static int cas_reset_tx(struct cas_softc *sc);
153 static void cas_resume(struct cas_softc *sc);
154 static u_int cas_descsize(u_int sz);
155 static void cas_rint(struct cas_softc *sc);
156 static void cas_rint_timeout(void *arg);
157 static inline void cas_rxcksum(struct mbuf *m, uint16_t cksum);
158 static inline void cas_rxcompinit(struct cas_rx_comp *rxcomp);
159 static u_int cas_rxcompsize(u_int sz);
160 static void cas_rxdma_callback(void *xsc, bus_dma_segment_t *segs,
161 int nsegs, int error);
162 static void cas_setladrf(struct cas_softc *sc);
163 static void cas_start(struct ifnet *ifp);
164 static void cas_stop(struct ifnet *ifp);
165 static void cas_suspend(struct cas_softc *sc);
166 static void cas_tick(void *arg);
167 static void cas_tint(struct cas_softc *sc);
168 static void cas_tx_task(void *arg, int pending __unused);
169 static inline void cas_txkick(struct cas_softc *sc);
170 static void cas_watchdog(struct cas_softc *sc);
172 static devclass_t cas_devclass;
174 MODULE_DEPEND(cas, ether, 1, 1, 1);
175 MODULE_DEPEND(cas, miibus, 1, 1, 1);
179 #define KTR_CAS KTR_CT2
183 cas_attach(struct cas_softc *sc)
185 struct cas_txsoft *txs;
190 /* Set up ifnet structure. */
191 ifp = sc->sc_ifp = if_alloc(IFT_ETHER);
195 if_initname(ifp, device_get_name(sc->sc_dev),
196 device_get_unit(sc->sc_dev));
197 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
198 ifp->if_start = cas_start;
199 ifp->if_ioctl = cas_ioctl;
200 ifp->if_init = cas_init;
201 IFQ_SET_MAXLEN(&ifp->if_snd, CAS_TXQUEUELEN);
202 ifp->if_snd.ifq_drv_maxlen = CAS_TXQUEUELEN;
203 IFQ_SET_READY(&ifp->if_snd);
205 callout_init_mtx(&sc->sc_tick_ch, &sc->sc_mtx, 0);
206 callout_init(&sc->sc_rx_ch, 1);
207 /* Create local taskq. */
208 TASK_INIT(&sc->sc_intr_task, 0, cas_intr_task, sc);
209 TASK_INIT(&sc->sc_tx_task, 1, cas_tx_task, ifp);
210 sc->sc_tq = taskqueue_create_fast("cas_taskq", M_WAITOK,
211 taskqueue_thread_enqueue, &sc->sc_tq);
212 if (sc->sc_tq == NULL) {
213 device_printf(sc->sc_dev, "could not create taskqueue\n");
217 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
218 device_get_nameunit(sc->sc_dev));
220 /* Make sure the chip is stopped. */
223 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
224 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
225 BUS_SPACE_MAXSIZE, 0, BUS_SPACE_MAXSIZE, 0, NULL, NULL,
230 error = bus_dma_tag_create(sc->sc_pdmatag, 1, 0,
231 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
232 CAS_PAGE_SIZE, 1, CAS_PAGE_SIZE, 0, NULL, NULL, &sc->sc_rdmatag);
236 error = bus_dma_tag_create(sc->sc_pdmatag, 1, 0,
237 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
238 MCLBYTES * CAS_NTXSEGS, CAS_NTXSEGS, MCLBYTES,
239 BUS_DMA_ALLOCNOW, NULL, NULL, &sc->sc_tdmatag);
243 error = bus_dma_tag_create(sc->sc_pdmatag, CAS_TX_DESC_ALIGN, 0,
244 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
245 sizeof(struct cas_control_data), 1,
246 sizeof(struct cas_control_data), 0,
247 NULL, NULL, &sc->sc_cdmatag);
252 * Allocate the control data structures, create and load the
255 if ((error = bus_dmamem_alloc(sc->sc_cdmatag,
256 (void **)&sc->sc_control_data,
257 BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
258 &sc->sc_cddmamap)) != 0) {
259 device_printf(sc->sc_dev,
260 "unable to allocate control data, error = %d\n", error);
265 if ((error = bus_dmamap_load(sc->sc_cdmatag, sc->sc_cddmamap,
266 sc->sc_control_data, sizeof(struct cas_control_data),
267 cas_cddma_callback, sc, 0)) != 0 || sc->sc_cddma == 0) {
268 device_printf(sc->sc_dev,
269 "unable to load control data DMA map, error = %d\n",
275 * Initialize the transmit job descriptors.
277 STAILQ_INIT(&sc->sc_txfreeq);
278 STAILQ_INIT(&sc->sc_txdirtyq);
281 * Create the transmit buffer DMA maps.
284 for (i = 0; i < CAS_TXQUEUELEN; i++) {
285 txs = &sc->sc_txsoft[i];
286 txs->txs_mbuf = NULL;
288 if ((error = bus_dmamap_create(sc->sc_tdmatag, 0,
289 &txs->txs_dmamap)) != 0) {
290 device_printf(sc->sc_dev,
291 "unable to create TX DMA map %d, error = %d\n",
295 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
299 * Allocate the receive buffers, create and load the DMA maps
302 for (i = 0; i < CAS_NRXDESC; i++) {
303 if ((error = bus_dmamem_alloc(sc->sc_rdmatag,
304 &sc->sc_rxdsoft[i].rxds_buf, BUS_DMA_WAITOK,
305 &sc->sc_rxdsoft[i].rxds_dmamap)) != 0) {
306 device_printf(sc->sc_dev,
307 "unable to allocate RX buffer %d, error = %d\n",
313 sc->sc_rxdsoft[i].rxds_paddr = 0;
314 if ((error = bus_dmamap_load(sc->sc_rdmatag,
315 sc->sc_rxdsoft[i].rxds_dmamap, sc->sc_rxdsoft[i].rxds_buf,
316 CAS_PAGE_SIZE, cas_rxdma_callback, sc, 0)) != 0 ||
317 sc->sc_rxdsoft[i].rxds_paddr == 0) {
318 device_printf(sc->sc_dev,
319 "unable to load RX DMA map %d, error = %d\n",
325 if ((sc->sc_flags & CAS_SERDES) == 0) {
326 CAS_WRITE_4(sc, CAS_PCS_DATAPATH, CAS_PCS_DATAPATH_MII);
327 CAS_BARRIER(sc, CAS_PCS_DATAPATH, 4,
328 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
331 * Look for an external PHY.
334 v = CAS_READ_4(sc, CAS_MIF_CONF);
335 if ((v & CAS_MIF_CONF_MDI1) != 0) {
336 v |= CAS_MIF_CONF_PHY_SELECT;
337 CAS_WRITE_4(sc, CAS_MIF_CONF, v);
338 CAS_BARRIER(sc, CAS_MIF_CONF, 4,
339 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
340 /* Enable/unfreeze the GMII pins of Saturn. */
341 if (sc->sc_variant == CAS_SATURN) {
342 CAS_WRITE_4(sc, CAS_SATURN_PCFG, 0);
343 CAS_BARRIER(sc, CAS_SATURN_PCFG, 4,
344 BUS_SPACE_BARRIER_READ |
345 BUS_SPACE_BARRIER_WRITE);
347 switch (sc->sc_variant) {
352 error = mii_phy_probe(sc->sc_dev, &sc->sc_miibus,
353 cas_mediachange, cas_mediastatus);
356 * Fall back on an internal PHY if no external PHY was found.
358 if (error != 0 && (v & CAS_MIF_CONF_MDI0) != 0) {
359 v &= ~CAS_MIF_CONF_PHY_SELECT;
360 CAS_WRITE_4(sc, CAS_MIF_CONF, v);
361 CAS_BARRIER(sc, CAS_MIF_CONF, 4,
362 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
363 /* Freeze the GMII pins of Saturn for saving power. */
364 if (sc->sc_variant == CAS_SATURN) {
365 CAS_WRITE_4(sc, CAS_SATURN_PCFG,
366 CAS_SATURN_PCFG_FSI);
367 CAS_BARRIER(sc, CAS_SATURN_PCFG, 4,
368 BUS_SPACE_BARRIER_READ |
369 BUS_SPACE_BARRIER_WRITE);
371 switch (sc->sc_variant) {
376 error = mii_phy_probe(sc->sc_dev, &sc->sc_miibus,
377 cas_mediachange, cas_mediastatus);
381 * Use the external PCS SERDES.
383 CAS_WRITE_4(sc, CAS_PCS_DATAPATH, CAS_PCS_DATAPATH_SERDES);
384 CAS_BARRIER(sc, CAS_PCS_DATAPATH, 4, BUS_SPACE_BARRIER_WRITE);
385 /* Enable/unfreeze the SERDES pins of Saturn. */
386 if (sc->sc_variant == CAS_SATURN) {
387 CAS_WRITE_4(sc, CAS_SATURN_PCFG, 0);
388 CAS_BARRIER(sc, CAS_SATURN_PCFG, 4,
389 BUS_SPACE_BARRIER_WRITE);
391 CAS_WRITE_4(sc, CAS_PCS_SERDES_CTRL, CAS_PCS_SERDES_CTRL_ESD);
392 CAS_BARRIER(sc, CAS_PCS_SERDES_CTRL, 4,
393 BUS_SPACE_BARRIER_WRITE);
394 CAS_WRITE_4(sc, CAS_PCS_CONF, CAS_PCS_CONF_EN);
395 CAS_BARRIER(sc, CAS_PCS_CONF, 4,
396 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
397 sc->sc_phyad = CAS_PHYAD_EXTERNAL;
398 error = mii_phy_probe(sc->sc_dev, &sc->sc_miibus,
399 cas_mediachange, cas_mediastatus);
402 device_printf(sc->sc_dev, "PHY probe failed: %d\n", error);
405 sc->sc_mii = device_get_softc(sc->sc_miibus);
408 * From this point forward, the attachment cannot fail. A failure
409 * before this point releases all resources that may have been
413 /* Announce FIFO sizes. */
414 v = CAS_READ_4(sc, CAS_TX_FIFO_SIZE);
415 device_printf(sc->sc_dev, "%ukB RX FIFO, %ukB TX FIFO\n",
416 CAS_RX_FIFO_SIZE / 1024, v / 16);
418 /* Attach the interface. */
419 ether_ifattach(ifp, sc->sc_enaddr);
422 * Tell the upper layer(s) we support long frames/checksum offloads.
424 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
425 ifp->if_capabilities = IFCAP_VLAN_MTU;
426 if ((sc->sc_flags & CAS_NO_CSUM) == 0) {
427 ifp->if_capabilities |= IFCAP_HWCSUM;
428 ifp->if_hwassist = CAS_CSUM_FEATURES;
430 ifp->if_capenable = ifp->if_capabilities;
435 * Free any resources we've allocated during the failed attach
436 * attempt. Do this in reverse order and fall through.
439 for (i = 0; i < CAS_NRXDESC; i++)
440 if (sc->sc_rxdsoft[i].rxds_paddr != 0)
441 bus_dmamap_unload(sc->sc_rdmatag,
442 sc->sc_rxdsoft[i].rxds_dmamap);
444 for (i = 0; i < CAS_NRXDESC; i++)
445 if (sc->sc_rxdsoft[i].rxds_buf != NULL)
446 bus_dmamem_free(sc->sc_rdmatag,
447 sc->sc_rxdsoft[i].rxds_buf,
448 sc->sc_rxdsoft[i].rxds_dmamap);
450 for (i = 0; i < CAS_TXQUEUELEN; i++)
451 if (sc->sc_txsoft[i].txs_dmamap != NULL)
452 bus_dmamap_destroy(sc->sc_tdmatag,
453 sc->sc_txsoft[i].txs_dmamap);
454 bus_dmamap_unload(sc->sc_cdmatag, sc->sc_cddmamap);
456 bus_dmamem_free(sc->sc_cdmatag, sc->sc_control_data,
459 bus_dma_tag_destroy(sc->sc_cdmatag);
461 bus_dma_tag_destroy(sc->sc_tdmatag);
463 bus_dma_tag_destroy(sc->sc_rdmatag);
465 bus_dma_tag_destroy(sc->sc_pdmatag);
467 taskqueue_free(sc->sc_tq);
474 cas_detach(struct cas_softc *sc)
476 struct ifnet *ifp = sc->sc_ifp;
483 callout_drain(&sc->sc_tick_ch);
484 callout_drain(&sc->sc_rx_ch);
485 taskqueue_drain(sc->sc_tq, &sc->sc_intr_task);
486 taskqueue_drain(sc->sc_tq, &sc->sc_tx_task);
488 taskqueue_free(sc->sc_tq);
489 device_delete_child(sc->sc_dev, sc->sc_miibus);
491 for (i = 0; i < CAS_NRXDESC; i++)
492 if (sc->sc_rxdsoft[i].rxds_dmamap != NULL)
493 bus_dmamap_sync(sc->sc_rdmatag,
494 sc->sc_rxdsoft[i].rxds_dmamap,
495 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
496 for (i = 0; i < CAS_NRXDESC; i++)
497 if (sc->sc_rxdsoft[i].rxds_paddr != 0)
498 bus_dmamap_unload(sc->sc_rdmatag,
499 sc->sc_rxdsoft[i].rxds_dmamap);
500 for (i = 0; i < CAS_NRXDESC; i++)
501 if (sc->sc_rxdsoft[i].rxds_buf != NULL)
502 bus_dmamem_free(sc->sc_rdmatag,
503 sc->sc_rxdsoft[i].rxds_buf,
504 sc->sc_rxdsoft[i].rxds_dmamap);
505 for (i = 0; i < CAS_TXQUEUELEN; i++)
506 if (sc->sc_txsoft[i].txs_dmamap != NULL)
507 bus_dmamap_destroy(sc->sc_tdmatag,
508 sc->sc_txsoft[i].txs_dmamap);
509 CAS_CDSYNC(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
510 bus_dmamap_unload(sc->sc_cdmatag, sc->sc_cddmamap);
511 bus_dmamem_free(sc->sc_cdmatag, sc->sc_control_data,
513 bus_dma_tag_destroy(sc->sc_cdmatag);
514 bus_dma_tag_destroy(sc->sc_tdmatag);
515 bus_dma_tag_destroy(sc->sc_rdmatag);
516 bus_dma_tag_destroy(sc->sc_pdmatag);
520 cas_suspend(struct cas_softc *sc)
522 struct ifnet *ifp = sc->sc_ifp;
530 cas_resume(struct cas_softc *sc)
532 struct ifnet *ifp = sc->sc_ifp;
536 * On resume all registers have to be initialized again like
539 sc->sc_flags &= ~CAS_INITED;
540 if (ifp->if_flags & IFF_UP)
546 cas_rxcksum(struct mbuf *m, uint16_t cksum)
548 struct ether_header *eh;
552 int32_t hlen, len, pktlen;
555 pktlen = m->m_pkthdr.len;
556 if (pktlen < sizeof(struct ether_header) + sizeof(struct ip))
558 eh = mtod(m, struct ether_header *);
559 if (eh->ether_type != htons(ETHERTYPE_IP))
561 ip = (struct ip *)(eh + 1);
562 if (ip->ip_v != IPVERSION)
565 hlen = ip->ip_hl << 2;
566 pktlen -= sizeof(struct ether_header);
567 if (hlen < sizeof(struct ip))
569 if (ntohs(ip->ip_len) < hlen)
571 if (ntohs(ip->ip_len) != pktlen)
573 if (ip->ip_off & htons(IP_MF | IP_OFFMASK))
574 return; /* Cannot handle fragmented packet. */
578 if (pktlen < (hlen + sizeof(struct tcphdr)))
582 if (pktlen < (hlen + sizeof(struct udphdr)))
584 uh = (struct udphdr *)((uint8_t *)ip + hlen);
586 return; /* no checksum */
593 /* checksum fixup for IP options */
594 len = hlen - sizeof(struct ip);
596 opts = (uint16_t *)(ip + 1);
597 for (; len > 0; len -= sizeof(uint16_t), opts++) {
598 temp32 = cksum - *opts;
599 temp32 = (temp32 >> 16) + (temp32 & 65535);
600 cksum = temp32 & 65535;
603 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
604 m->m_pkthdr.csum_data = cksum;
608 cas_cddma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
610 struct cas_softc *sc = xsc;
615 panic("%s: bad control buffer segment count", __func__);
616 sc->sc_cddma = segs[0].ds_addr;
620 cas_rxdma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
622 struct cas_softc *sc = xsc;
627 panic("%s: bad RX buffer segment count", __func__);
628 sc->sc_rxdsoft[sc->sc_rxdptr].rxds_paddr = segs[0].ds_addr;
634 struct cas_softc *sc = arg;
635 struct ifnet *ifp = sc->sc_ifp;
638 CAS_LOCK_ASSERT(sc, MA_OWNED);
641 * Unload collision and error counters.
643 ifp->if_collisions +=
644 CAS_READ_4(sc, CAS_MAC_NORM_COLL_CNT) +
645 CAS_READ_4(sc, CAS_MAC_FIRST_COLL_CNT);
646 v = CAS_READ_4(sc, CAS_MAC_EXCESS_COLL_CNT) +
647 CAS_READ_4(sc, CAS_MAC_LATE_COLL_CNT);
648 ifp->if_collisions += v;
649 ifp->if_oerrors += v;
651 CAS_READ_4(sc, CAS_MAC_RX_LEN_ERR_CNT) +
652 CAS_READ_4(sc, CAS_MAC_RX_ALIGN_ERR) +
653 CAS_READ_4(sc, CAS_MAC_RX_CRC_ERR_CNT) +
654 CAS_READ_4(sc, CAS_MAC_RX_CODE_VIOL);
657 * Then clear the hardware counters.
659 CAS_WRITE_4(sc, CAS_MAC_NORM_COLL_CNT, 0);
660 CAS_WRITE_4(sc, CAS_MAC_FIRST_COLL_CNT, 0);
661 CAS_WRITE_4(sc, CAS_MAC_EXCESS_COLL_CNT, 0);
662 CAS_WRITE_4(sc, CAS_MAC_LATE_COLL_CNT, 0);
663 CAS_WRITE_4(sc, CAS_MAC_RX_LEN_ERR_CNT, 0);
664 CAS_WRITE_4(sc, CAS_MAC_RX_ALIGN_ERR, 0);
665 CAS_WRITE_4(sc, CAS_MAC_RX_CRC_ERR_CNT, 0);
666 CAS_WRITE_4(sc, CAS_MAC_RX_CODE_VIOL, 0);
668 mii_tick(sc->sc_mii);
670 if (sc->sc_txfree != CAS_MAXTXFREE)
675 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc);
679 cas_bitwait(struct cas_softc *sc, bus_addr_t r, uint32_t clr, uint32_t set)
684 for (i = CAS_TRIES; i--; DELAY(100)) {
685 reg = CAS_READ_4(sc, r);
686 if ((reg & clr) == 0 && (reg & set) == set)
693 cas_reset(struct cas_softc *sc)
697 CTR2(KTR_CAS, "%s: %s", device_get_name(sc->sc_dev), __func__);
699 /* Disable all interrupts in order to avoid spurious ones. */
700 CAS_WRITE_4(sc, CAS_INTMASK, 0xffffffff);
706 * Do a full reset modulo the result of the last auto-negotiation
707 * when using the SERDES.
709 CAS_WRITE_4(sc, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX |
710 ((sc->sc_flags & CAS_SERDES) != 0 ? CAS_RESET_PCS_DIS : 0));
711 CAS_BARRIER(sc, CAS_RESET, 4,
712 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
714 if (!cas_bitwait(sc, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0))
715 device_printf(sc->sc_dev, "cannot reset device\n");
719 cas_stop(struct ifnet *ifp)
721 struct cas_softc *sc = ifp->if_softc;
722 struct cas_txsoft *txs;
725 CTR2(KTR_CAS, "%s: %s", device_get_name(sc->sc_dev), __func__);
728 callout_stop(&sc->sc_tick_ch);
729 callout_stop(&sc->sc_rx_ch);
731 /* Disable all interrupts in order to avoid spurious ones. */
732 CAS_WRITE_4(sc, CAS_INTMASK, 0xffffffff);
738 * Release any queued transmit buffers.
740 while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
741 STAILQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q);
742 if (txs->txs_ndescs != 0) {
743 bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
744 BUS_DMASYNC_POSTWRITE);
745 bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
746 if (txs->txs_mbuf != NULL) {
747 m_freem(txs->txs_mbuf);
748 txs->txs_mbuf = NULL;
751 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
755 * Mark the interface down and cancel the watchdog timer.
757 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
758 sc->sc_flags &= ~CAS_LINK;
759 sc->sc_wdog_timer = 0;
763 cas_reset_rx(struct cas_softc *sc)
767 * Resetting while DMA is in progress can cause a bus hang, so we
771 CAS_WRITE_4(sc, CAS_RX_CONF, 0);
772 CAS_BARRIER(sc, CAS_RX_CONF, 4,
773 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
774 if (!cas_bitwait(sc, CAS_RX_CONF, CAS_RX_CONF_RXDMA_EN, 0))
775 device_printf(sc->sc_dev, "cannot disable RX DMA\n");
777 /* Finally, reset the ERX. */
778 CAS_WRITE_4(sc, CAS_RESET, CAS_RESET_RX |
779 ((sc->sc_flags & CAS_SERDES) != 0 ? CAS_RESET_PCS_DIS : 0));
780 CAS_BARRIER(sc, CAS_RESET, 4,
781 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
782 if (!cas_bitwait(sc, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0)) {
783 device_printf(sc->sc_dev, "cannot reset receiver\n");
790 cas_reset_tx(struct cas_softc *sc)
794 * Resetting while DMA is in progress can cause a bus hang, so we
798 CAS_WRITE_4(sc, CAS_TX_CONF, 0);
799 CAS_BARRIER(sc, CAS_TX_CONF, 4,
800 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
801 if (!cas_bitwait(sc, CAS_TX_CONF, CAS_TX_CONF_TXDMA_EN, 0))
802 device_printf(sc->sc_dev, "cannot disable TX DMA\n");
804 /* Finally, reset the ETX. */
805 CAS_WRITE_4(sc, CAS_RESET, CAS_RESET_TX |
806 ((sc->sc_flags & CAS_SERDES) != 0 ? CAS_RESET_PCS_DIS : 0));
807 CAS_BARRIER(sc, CAS_RESET, 4,
808 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
809 if (!cas_bitwait(sc, CAS_RESET, CAS_RESET_RX | CAS_RESET_TX, 0)) {
810 device_printf(sc->sc_dev, "cannot reset transmitter\n");
817 cas_disable_rx(struct cas_softc *sc)
820 CAS_WRITE_4(sc, CAS_MAC_RX_CONF,
821 CAS_READ_4(sc, CAS_MAC_RX_CONF) & ~CAS_MAC_RX_CONF_EN);
822 CAS_BARRIER(sc, CAS_MAC_RX_CONF, 4,
823 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
824 return (cas_bitwait(sc, CAS_MAC_RX_CONF, CAS_MAC_RX_CONF_EN, 0));
828 cas_disable_tx(struct cas_softc *sc)
831 CAS_WRITE_4(sc, CAS_MAC_TX_CONF,
832 CAS_READ_4(sc, CAS_MAC_TX_CONF) & ~CAS_MAC_TX_CONF_EN);
833 CAS_BARRIER(sc, CAS_MAC_TX_CONF, 4,
834 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
835 return (cas_bitwait(sc, CAS_MAC_TX_CONF, CAS_MAC_TX_CONF_EN, 0));
839 cas_rxcompinit(struct cas_rx_comp *rxcomp)
842 rxcomp->crc_word1 = 0;
843 rxcomp->crc_word2 = 0;
845 htole64(CAS_SET(ETHER_HDR_LEN + sizeof(struct ip), CAS_RC3_CSO));
846 rxcomp->crc_word4 = htole64(CAS_RC4_ZERO);
850 cas_meminit(struct cas_softc *sc)
854 CAS_LOCK_ASSERT(sc, MA_OWNED);
857 * Initialize the transmit descriptor ring.
859 for (i = 0; i < CAS_NTXDESC; i++) {
860 sc->sc_txdescs[i].cd_flags = 0;
861 sc->sc_txdescs[i].cd_buf_ptr = 0;
863 sc->sc_txfree = CAS_MAXTXFREE;
868 * Initialize the receive completion ring.
870 for (i = 0; i < CAS_NRXCOMP; i++)
871 cas_rxcompinit(&sc->sc_rxcomps[i]);
875 * Initialize the first receive descriptor ring. We leave
876 * the second one zeroed as we don't actually use it.
878 for (i = 0; i < CAS_NRXDESC; i++)
879 CAS_INIT_RXDESC(sc, i, i);
882 CAS_CDSYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
886 cas_descsize(u_int sz)
891 return (CAS_DESC_32);
893 return (CAS_DESC_64);
895 return (CAS_DESC_128);
897 return (CAS_DESC_256);
899 return (CAS_DESC_512);
901 return (CAS_DESC_1K);
903 return (CAS_DESC_2K);
905 return (CAS_DESC_4K);
907 return (CAS_DESC_8K);
909 printf("%s: invalid descriptor ring size %d\n", __func__, sz);
910 return (CAS_DESC_32);
915 cas_rxcompsize(u_int sz)
920 return (CAS_RX_CONF_COMP_128);
922 return (CAS_RX_CONF_COMP_256);
924 return (CAS_RX_CONF_COMP_512);
926 return (CAS_RX_CONF_COMP_1K);
928 return (CAS_RX_CONF_COMP_2K);
930 return (CAS_RX_CONF_COMP_4K);
932 return (CAS_RX_CONF_COMP_8K);
934 return (CAS_RX_CONF_COMP_16K);
936 return (CAS_RX_CONF_COMP_32K);
938 printf("%s: invalid dcompletion ring size %d\n", __func__, sz);
939 return (CAS_RX_CONF_COMP_128);
946 struct cas_softc *sc = xsc;
954 * Initialization of interface; set up initialization block
955 * and transmit/receive descriptor rings.
958 cas_init_locked(struct cas_softc *sc)
960 struct ifnet *ifp = sc->sc_ifp;
963 CAS_LOCK_ASSERT(sc, MA_OWNED);
965 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
969 CTR2(KTR_CAS, "%s: %s: calling stop", device_get_name(sc->sc_dev),
973 * Initialization sequence. The numbered steps below correspond
974 * to the sequence outlined in section 6.3.5.1 in the Ethernet
975 * Channel Engine manual (part of the PCIO manual).
976 * See also the STP2002-STQ document from Sun Microsystems.
979 /* step 1 & 2. Reset the Ethernet Channel. */
983 CTR2(KTR_CAS, "%s: %s: restarting", device_get_name(sc->sc_dev),
987 if ((sc->sc_flags & CAS_SERDES) == 0)
988 /* Re-initialize the MIF. */
991 /* step 3. Setup data structures in host memory. */
994 /* step 4. TX MAC registers & counters */
997 /* step 5. RX MAC registers & counters */
1000 /* step 6 & 7. Program Ring Base Addresses. */
1001 CAS_WRITE_4(sc, CAS_TX_DESC3_BASE_HI,
1002 (((uint64_t)CAS_CDTXDADDR(sc, 0)) >> 32));
1003 CAS_WRITE_4(sc, CAS_TX_DESC3_BASE_LO,
1004 CAS_CDTXDADDR(sc, 0) & 0xffffffff);
1006 CAS_WRITE_4(sc, CAS_RX_COMP_BASE_HI,
1007 (((uint64_t)CAS_CDRXCADDR(sc, 0)) >> 32));
1008 CAS_WRITE_4(sc, CAS_RX_COMP_BASE_LO,
1009 CAS_CDRXCADDR(sc, 0) & 0xffffffff);
1011 CAS_WRITE_4(sc, CAS_RX_DESC_BASE_HI,
1012 (((uint64_t)CAS_CDRXDADDR(sc, 0)) >> 32));
1013 CAS_WRITE_4(sc, CAS_RX_DESC_BASE_LO,
1014 CAS_CDRXDADDR(sc, 0) & 0xffffffff);
1016 if ((sc->sc_flags & CAS_REG_PLUS) != 0) {
1017 CAS_WRITE_4(sc, CAS_RX_DESC2_BASE_HI,
1018 (((uint64_t)CAS_CDRXD2ADDR(sc, 0)) >> 32));
1019 CAS_WRITE_4(sc, CAS_RX_DESC2_BASE_LO,
1020 CAS_CDRXD2ADDR(sc, 0) & 0xffffffff);
1025 "loading TXDR %lx, RXCR %lx, RXDR %lx, RXD2R %lx, cddma %lx",
1026 CAS_CDTXDADDR(sc, 0), CAS_CDRXCADDR(sc, 0), CAS_CDRXDADDR(sc, 0),
1027 CAS_CDRXD2ADDR(sc, 0), sc->sc_cddma);
1030 /* step 8. Global Configuration & Interrupt Masks */
1032 /* Disable weighted round robin. */
1033 CAS_WRITE_4(sc, CAS_CAW, CAS_CAW_RR_DIS);
1036 * Enable infinite bursts for revisions without PCI issues if
1037 * applicable. Doing so greatly improves the TX performance on
1040 CAS_WRITE_4(sc, CAS_INF_BURST,
1041 #if !defined(__sparc64__)
1042 (sc->sc_flags & CAS_TABORT) == 0 ? CAS_INF_BURST_EN :
1046 /* Set up interrupts. */
1047 CAS_WRITE_4(sc, CAS_INTMASK,
1048 ~(CAS_INTR_TX_INT_ME | CAS_INTR_TX_TAG_ERR |
1049 CAS_INTR_RX_DONE | CAS_INTR_RX_BUF_NA | CAS_INTR_RX_TAG_ERR |
1050 CAS_INTR_RX_COMP_FULL | CAS_INTR_RX_BUF_AEMPTY |
1051 CAS_INTR_RX_COMP_AFULL | CAS_INTR_RX_LEN_MMATCH |
1052 CAS_INTR_PCI_ERROR_INT
1054 | CAS_INTR_PCS_INT | CAS_INTR_MIF
1057 /* Don't clear top level interrupts when CAS_STATUS_ALIAS is read. */
1058 CAS_WRITE_4(sc, CAS_CLEAR_ALIAS, 0);
1059 CAS_WRITE_4(sc, CAS_MAC_RX_MASK, ~CAS_MAC_RX_OVERFLOW);
1060 CAS_WRITE_4(sc, CAS_MAC_TX_MASK,
1061 ~(CAS_MAC_TX_UNDERRUN | CAS_MAC_TX_MAX_PKT_ERR));
1063 CAS_WRITE_4(sc, CAS_MAC_CTRL_MASK,
1064 ~(CAS_MAC_CTRL_PAUSE_RCVD | CAS_MAC_CTRL_PAUSE |
1065 CAS_MAC_CTRL_NON_PAUSE));
1067 CAS_WRITE_4(sc, CAS_MAC_CTRL_MASK,
1068 CAS_MAC_CTRL_PAUSE_RCVD | CAS_MAC_CTRL_PAUSE |
1069 CAS_MAC_CTRL_NON_PAUSE);
1072 /* Enable PCI error interrupts. */
1073 CAS_WRITE_4(sc, CAS_ERROR_MASK,
1074 ~(CAS_ERROR_DTRTO | CAS_ERROR_OTHER | CAS_ERROR_DMAW_ZERO |
1075 CAS_ERROR_DMAR_ZERO | CAS_ERROR_RTRTO));
1077 /* Enable PCI error interrupts in BIM configuration. */
1078 CAS_WRITE_4(sc, CAS_BIM_CONF,
1079 CAS_BIM_CONF_DPAR_EN | CAS_BIM_CONF_RMA_EN | CAS_BIM_CONF_RTA_EN);
1082 * step 9. ETX Configuration: encode receive descriptor ring size,
1083 * enable DMA and disable pre-interrupt writeback completion.
1085 v = cas_descsize(CAS_NTXDESC) << CAS_TX_CONF_DESC3_SHFT;
1086 CAS_WRITE_4(sc, CAS_TX_CONF, v | CAS_TX_CONF_TXDMA_EN |
1087 CAS_TX_CONF_RDPP_DIS | CAS_TX_CONF_PICWB_DIS);
1089 /* step 10. ERX Configuration */
1092 * Encode receive completion and descriptor ring sizes, set the
1095 v = cas_rxcompsize(CAS_NRXCOMP) << CAS_RX_CONF_COMP_SHFT;
1096 v |= cas_descsize(CAS_NRXDESC) << CAS_RX_CONF_DESC_SHFT;
1097 if ((sc->sc_flags & CAS_REG_PLUS) != 0)
1098 v |= cas_descsize(CAS_NRXDESC2) << CAS_RX_CONF_DESC2_SHFT;
1099 CAS_WRITE_4(sc, CAS_RX_CONF,
1100 v | (ETHER_ALIGN << CAS_RX_CONF_SOFF_SHFT));
1102 /* Set the PAUSE thresholds. We use the maximum OFF threshold. */
1103 CAS_WRITE_4(sc, CAS_RX_PTHRS,
1104 ((111 * 64) << CAS_RX_PTHRS_XOFF_SHFT) |
1105 ((15 * 64) << CAS_RX_PTHRS_XON_SHFT));
1108 CAS_WRITE_4(sc, CAS_RX_BLANK,
1109 (15 << CAS_RX_BLANK_TIME_SHFT) | (5 << CAS_RX_BLANK_PKTS_SHFT));
1111 /* Set RX_COMP_AFULL threshold to half of the RX completions. */
1112 CAS_WRITE_4(sc, CAS_RX_AEMPTY_THRS,
1113 (CAS_NRXCOMP / 2) << CAS_RX_AEMPTY_COMP_SHFT);
1115 /* Initialize the RX page size register as appropriate for 8k. */
1116 CAS_WRITE_4(sc, CAS_RX_PSZ,
1117 (CAS_RX_PSZ_8K << CAS_RX_PSZ_SHFT) |
1118 (4 << CAS_RX_PSZ_MB_CNT_SHFT) |
1119 (CAS_RX_PSZ_MB_STRD_2K << CAS_RX_PSZ_MB_STRD_SHFT) |
1120 (CAS_RX_PSZ_MB_OFF_64 << CAS_RX_PSZ_MB_OFF_SHFT));
1122 /* Disable RX random early detection. */
1123 CAS_WRITE_4(sc, CAS_RX_RED, 0);
1125 /* Zero the RX reassembly DMA table. */
1126 for (v = 0; v <= CAS_RX_REAS_DMA_ADDR_LC; v++) {
1127 CAS_WRITE_4(sc, CAS_RX_REAS_DMA_ADDR, v);
1128 CAS_WRITE_4(sc, CAS_RX_REAS_DMA_DATA_LO, 0);
1129 CAS_WRITE_4(sc, CAS_RX_REAS_DMA_DATA_MD, 0);
1130 CAS_WRITE_4(sc, CAS_RX_REAS_DMA_DATA_HI, 0);
1133 /* Ensure the RX control FIFO and RX IPP FIFO addresses are zero. */
1134 CAS_WRITE_4(sc, CAS_RX_CTRL_FIFO, 0);
1135 CAS_WRITE_4(sc, CAS_RX_IPP_ADDR, 0);
1137 /* Finally, enable RX DMA. */
1138 CAS_WRITE_4(sc, CAS_RX_CONF,
1139 CAS_READ_4(sc, CAS_RX_CONF) | CAS_RX_CONF_RXDMA_EN);
1141 /* step 11. Configure Media. */
1143 /* step 12. RX_MAC Configuration Register */
1144 v = CAS_READ_4(sc, CAS_MAC_RX_CONF) & ~CAS_MAC_RX_CONF_STRPPAD;
1145 v |= CAS_MAC_RX_CONF_EN | CAS_MAC_RX_CONF_STRPFCS;
1146 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, 0);
1147 CAS_BARRIER(sc, CAS_MAC_RX_CONF, 4,
1148 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
1149 if (!cas_bitwait(sc, CAS_MAC_RX_CONF, CAS_MAC_RX_CONF_EN, 0))
1150 device_printf(sc->sc_dev, "cannot configure RX MAC\n");
1151 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, v);
1153 /* step 13. TX_MAC Configuration Register */
1154 v = CAS_READ_4(sc, CAS_MAC_TX_CONF);
1155 v |= CAS_MAC_TX_CONF_EN;
1156 CAS_WRITE_4(sc, CAS_MAC_TX_CONF, 0);
1157 CAS_BARRIER(sc, CAS_MAC_TX_CONF, 4,
1158 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
1159 if (!cas_bitwait(sc, CAS_MAC_TX_CONF, CAS_MAC_TX_CONF_EN, 0))
1160 device_printf(sc->sc_dev, "cannot configure TX MAC\n");
1161 CAS_WRITE_4(sc, CAS_MAC_TX_CONF, v);
1163 /* step 14. Issue Transmit Pending command. */
1165 /* step 15. Give the reciever a swift kick. */
1166 CAS_WRITE_4(sc, CAS_RX_KICK, CAS_NRXDESC - 4);
1167 CAS_WRITE_4(sc, CAS_RX_COMP_TAIL, 0);
1168 if ((sc->sc_flags & CAS_REG_PLUS) != 0)
1169 CAS_WRITE_4(sc, CAS_RX_KICK2, CAS_NRXDESC2 - 4);
1171 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1172 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1174 mii_mediachg(sc->sc_mii);
1176 /* Start the one second timer. */
1177 sc->sc_wdog_timer = 0;
1178 callout_reset(&sc->sc_tick_ch, hz, cas_tick, sc);
1182 cas_load_txmbuf(struct cas_softc *sc, struct mbuf **m_head)
1184 bus_dma_segment_t txsegs[CAS_NTXSEGS];
1185 struct cas_txsoft *txs;
1189 int error, nexttx, nsegs, offset, seg;
1191 CAS_LOCK_ASSERT(sc, MA_OWNED);
1193 /* Get a work queue entry. */
1194 if ((txs = STAILQ_FIRST(&sc->sc_txfreeq)) == NULL) {
1195 /* Ran out of descriptors. */
1200 if (((*m_head)->m_pkthdr.csum_flags & CAS_CSUM_FEATURES) != 0) {
1201 if (M_WRITABLE(*m_head) == 0) {
1202 m = m_dup(*m_head, M_DONTWAIT);
1208 offset = sizeof(struct ether_header);
1209 m = m_pullup(*m_head, offset + sizeof(struct ip));
1214 ip = (struct ip *)(mtod(m, caddr_t) + offset);
1215 offset += (ip->ip_hl << 2);
1216 cflags = (offset << CAS_TD_CKSUM_START_SHFT) |
1217 ((offset + m->m_pkthdr.csum_data) <<
1218 CAS_TD_CKSUM_STUFF_SHFT) | CAS_TD_CKSUM_EN;
1222 error = bus_dmamap_load_mbuf_sg(sc->sc_tdmatag, txs->txs_dmamap,
1223 *m_head, txsegs, &nsegs, BUS_DMA_NOWAIT);
1224 if (error == EFBIG) {
1225 m = m_collapse(*m_head, M_DONTWAIT, CAS_NTXSEGS);
1232 error = bus_dmamap_load_mbuf_sg(sc->sc_tdmatag,
1233 txs->txs_dmamap, *m_head, txsegs, &nsegs,
1240 } else if (error != 0)
1242 /* If nsegs is wrong then the stack is corrupt. */
1243 KASSERT(nsegs <= CAS_NTXSEGS,
1244 ("%s: too many DMA segments (%d)", __func__, nsegs));
1252 * Ensure we have enough descriptors free to describe
1253 * the packet. Note, we always reserve one descriptor
1254 * at the end of the ring as a termination point, in
1255 * order to prevent wrap-around.
1257 if (nsegs > sc->sc_txfree - 1) {
1258 txs->txs_ndescs = 0;
1259 bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1263 txs->txs_ndescs = nsegs;
1264 txs->txs_firstdesc = sc->sc_txnext;
1265 nexttx = txs->txs_firstdesc;
1266 for (seg = 0; seg < nsegs; seg++, nexttx = CAS_NEXTTX(nexttx)) {
1269 "%s: mapping seg %d (txd %d), len %lx, addr %#lx (%#lx)",
1270 __func__, seg, nexttx, txsegs[seg].ds_len,
1271 txsegs[seg].ds_addr, htole64(txsegs[seg].ds_addr));
1273 sc->sc_txdescs[nexttx].cd_buf_ptr =
1274 htole64(txsegs[seg].ds_addr);
1275 KASSERT(txsegs[seg].ds_len <
1276 CAS_TD_BUF_LEN_MASK >> CAS_TD_BUF_LEN_SHFT,
1277 ("%s: segment size too large!", __func__));
1278 sc->sc_txdescs[nexttx].cd_flags =
1279 htole64(txsegs[seg].ds_len << CAS_TD_BUF_LEN_SHFT);
1280 txs->txs_lastdesc = nexttx;
1283 /* Set EOF on the last descriptor. */
1285 CTR3(KTR_CAS, "%s: end of frame at segment %d, TX %d",
1286 __func__, seg, nexttx);
1288 sc->sc_txdescs[txs->txs_lastdesc].cd_flags |=
1289 htole64(CAS_TD_END_OF_FRAME);
1291 /* Lastly set SOF on the first descriptor. */
1293 CTR3(KTR_CAS, "%s: start of frame at segment %d, TX %d",
1294 __func__, seg, nexttx);
1296 if (sc->sc_txwin += nsegs > CAS_MAXTXFREE * 2 / 3) {
1298 sc->sc_txdescs[txs->txs_firstdesc].cd_flags |=
1299 htole64(cflags | CAS_TD_START_OF_FRAME | CAS_TD_INT_ME);
1301 sc->sc_txdescs[txs->txs_firstdesc].cd_flags |=
1302 htole64(cflags | CAS_TD_START_OF_FRAME);
1304 /* Sync the DMA map. */
1305 bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1306 BUS_DMASYNC_PREWRITE);
1309 CTR4(KTR_CAS, "%s: setting firstdesc=%d, lastdesc=%d, ndescs=%d",
1310 __func__, txs->txs_firstdesc, txs->txs_lastdesc,
1313 STAILQ_REMOVE_HEAD(&sc->sc_txfreeq, txs_q);
1314 STAILQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q);
1315 txs->txs_mbuf = *m_head;
1317 sc->sc_txnext = CAS_NEXTTX(txs->txs_lastdesc);
1318 sc->sc_txfree -= txs->txs_ndescs;
1324 cas_init_regs(struct cas_softc *sc)
1327 const u_char *laddr = IF_LLADDR(sc->sc_ifp);
1329 CAS_LOCK_ASSERT(sc, MA_OWNED);
1331 /* These registers are not cleared on reset. */
1332 if ((sc->sc_flags & CAS_INITED) == 0) {
1334 CAS_WRITE_4(sc, CAS_MAC_IPG0, 0);
1335 CAS_WRITE_4(sc, CAS_MAC_IPG1, 8);
1336 CAS_WRITE_4(sc, CAS_MAC_IPG2, 4);
1338 /* min frame length */
1339 CAS_WRITE_4(sc, CAS_MAC_MIN_FRAME, ETHER_MIN_LEN);
1340 /* max frame length and max burst size */
1341 CAS_WRITE_4(sc, CAS_MAC_MAX_BF,
1342 ((ETHER_MAX_LEN_JUMBO + ETHER_VLAN_ENCAP_LEN) <<
1343 CAS_MAC_MAX_BF_FRM_SHFT) |
1344 (0x2000 << CAS_MAC_MAX_BF_BST_SHFT));
1346 /* more magic values */
1347 CAS_WRITE_4(sc, CAS_MAC_PREAMBLE_LEN, 0x7);
1348 CAS_WRITE_4(sc, CAS_MAC_JAM_SIZE, 0x4);
1349 CAS_WRITE_4(sc, CAS_MAC_ATTEMPT_LIMIT, 0x10);
1350 CAS_WRITE_4(sc, CAS_MAC_CTRL_TYPE, 0x8088);
1352 /* random number seed */
1353 CAS_WRITE_4(sc, CAS_MAC_RANDOM_SEED,
1354 ((laddr[5] << 8) | laddr[4]) & 0x3ff);
1356 /* secondary MAC addresses: 0:0:0:0:0:0 */
1357 for (i = CAS_MAC_ADDR3; i <= CAS_MAC_ADDR41;
1358 i += CAS_MAC_ADDR4 - CAS_MAC_ADDR3)
1359 CAS_WRITE_4(sc, i, 0);
1361 /* MAC control address: 01:80:c2:00:00:01 */
1362 CAS_WRITE_4(sc, CAS_MAC_ADDR42, 0x0001);
1363 CAS_WRITE_4(sc, CAS_MAC_ADDR43, 0xc200);
1364 CAS_WRITE_4(sc, CAS_MAC_ADDR44, 0x0180);
1366 /* MAC filter address: 0:0:0:0:0:0 */
1367 CAS_WRITE_4(sc, CAS_MAC_AFILTER0, 0);
1368 CAS_WRITE_4(sc, CAS_MAC_AFILTER1, 0);
1369 CAS_WRITE_4(sc, CAS_MAC_AFILTER2, 0);
1370 CAS_WRITE_4(sc, CAS_MAC_AFILTER_MASK1_2, 0);
1371 CAS_WRITE_4(sc, CAS_MAC_AFILTER_MASK0, 0);
1373 /* Zero the hash table. */
1374 for (i = CAS_MAC_HASH0; i <= CAS_MAC_HASH15;
1375 i += CAS_MAC_HASH1 - CAS_MAC_HASH0)
1376 CAS_WRITE_4(sc, i, 0);
1378 sc->sc_flags |= CAS_INITED;
1381 /* Counters need to be zeroed. */
1382 CAS_WRITE_4(sc, CAS_MAC_NORM_COLL_CNT, 0);
1383 CAS_WRITE_4(sc, CAS_MAC_FIRST_COLL_CNT, 0);
1384 CAS_WRITE_4(sc, CAS_MAC_EXCESS_COLL_CNT, 0);
1385 CAS_WRITE_4(sc, CAS_MAC_LATE_COLL_CNT, 0);
1386 CAS_WRITE_4(sc, CAS_MAC_DEFER_TMR_CNT, 0);
1387 CAS_WRITE_4(sc, CAS_MAC_PEAK_ATTEMPTS, 0);
1388 CAS_WRITE_4(sc, CAS_MAC_RX_FRAME_COUNT, 0);
1389 CAS_WRITE_4(sc, CAS_MAC_RX_LEN_ERR_CNT, 0);
1390 CAS_WRITE_4(sc, CAS_MAC_RX_ALIGN_ERR, 0);
1391 CAS_WRITE_4(sc, CAS_MAC_RX_CRC_ERR_CNT, 0);
1392 CAS_WRITE_4(sc, CAS_MAC_RX_CODE_VIOL, 0);
1394 /* Set XOFF PAUSE time. */
1395 CAS_WRITE_4(sc, CAS_MAC_SPC, 0x1BF0 << CAS_MAC_SPC_TIME_SHFT);
1397 /* Set the station address. */
1398 CAS_WRITE_4(sc, CAS_MAC_ADDR0, (laddr[4] << 8) | laddr[5]);
1399 CAS_WRITE_4(sc, CAS_MAC_ADDR1, (laddr[2] << 8) | laddr[3]);
1400 CAS_WRITE_4(sc, CAS_MAC_ADDR2, (laddr[0] << 8) | laddr[1]);
1402 /* Enable MII outputs. */
1403 CAS_WRITE_4(sc, CAS_MAC_XIF_CONF, CAS_MAC_XIF_CONF_TX_OE);
1407 cas_tx_task(void *arg, int pending __unused)
1411 ifp = (struct ifnet *)arg;
1416 cas_txkick(struct cas_softc *sc)
1420 * Update the TX kick register. This register has to point to the
1421 * descriptor after the last valid one and for optimum performance
1422 * should be incremented in multiples of 4 (the DMA engine fetches/
1423 * updates descriptors in batches of 4).
1426 CTR3(KTR_CAS, "%s: %s: kicking TX %d",
1427 device_get_name(sc->sc_dev), __func__, sc->sc_txnext);
1429 CAS_CDSYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1430 CAS_WRITE_4(sc, CAS_TX_KICK3, sc->sc_txnext);
1434 cas_start(struct ifnet *ifp)
1436 struct cas_softc *sc = ifp->if_softc;
1442 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1443 IFF_DRV_RUNNING || (sc->sc_flags & CAS_LINK) == 0) {
1448 if (sc->sc_txfree < CAS_MAXTXFREE / 4)
1452 CTR4(KTR_CAS, "%s: %s: txfree %d, txnext %d",
1453 device_get_name(sc->sc_dev), __func__, sc->sc_txfree,
1458 for (; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && sc->sc_txfree > 1;) {
1459 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1462 if (cas_load_txmbuf(sc, &m) != 0) {
1465 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1466 IFQ_DRV_PREPEND(&ifp->if_snd, m);
1469 if ((sc->sc_txnext % 4) == 0) {
1482 CTR2(KTR_CAS, "%s: packets enqueued, OWN on %d",
1483 device_get_name(sc->sc_dev), sc->sc_txnext);
1486 /* Set a watchdog timer in case the chip flakes out. */
1487 sc->sc_wdog_timer = 5;
1489 CTR3(KTR_CAS, "%s: %s: watchdog %d",
1490 device_get_name(sc->sc_dev), __func__,
1499 cas_tint(struct cas_softc *sc)
1501 struct ifnet *ifp = sc->sc_ifp;
1502 struct cas_txsoft *txs;
1508 CAS_LOCK_ASSERT(sc, MA_OWNED);
1510 CTR2(KTR_CAS, "%s: %s", device_get_name(sc->sc_dev), __func__);
1514 * Go through our TX list and free mbufs for those
1515 * frames that have been transmitted.
1518 CAS_CDSYNC(sc, BUS_DMASYNC_POSTREAD);
1519 while ((txs = STAILQ_FIRST(&sc->sc_txdirtyq)) != NULL) {
1521 if ((ifp->if_flags & IFF_DEBUG) != 0) {
1522 printf(" txsoft %p transmit chain:\n", txs);
1523 for (i = txs->txs_firstdesc;; i = CAS_NEXTTX(i)) {
1524 printf("descriptor %d: ", i);
1525 printf("cd_flags: 0x%016llx\t",
1527 sc->sc_txdescs[i].cd_flags));
1528 printf("cd_buf_ptr: 0x%016llx\n",
1530 sc->sc_txdescs[i].cd_buf_ptr));
1531 if (i == txs->txs_lastdesc)
1538 * In theory, we could harvest some descriptors before
1539 * the ring is empty, but that's a bit complicated.
1541 * CAS_TX_COMPn points to the last descriptor
1544 txlast = CAS_READ_4(sc, CAS_TX_COMP3);
1546 CTR4(KTR_CAS, "%s: txs->txs_firstdesc = %d, "
1547 "txs->txs_lastdesc = %d, txlast = %d",
1548 __func__, txs->txs_firstdesc, txs->txs_lastdesc, txlast);
1550 if (txs->txs_firstdesc <= txs->txs_lastdesc) {
1551 if ((txlast >= txs->txs_firstdesc) &&
1552 (txlast <= txs->txs_lastdesc))
1555 /* Ick -- this command wraps. */
1556 if ((txlast >= txs->txs_firstdesc) ||
1557 (txlast <= txs->txs_lastdesc))
1562 CTR1(KTR_CAS, "%s: releasing a descriptor", __func__);
1564 STAILQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q);
1566 sc->sc_txfree += txs->txs_ndescs;
1568 bus_dmamap_sync(sc->sc_tdmatag, txs->txs_dmamap,
1569 BUS_DMASYNC_POSTWRITE);
1570 bus_dmamap_unload(sc->sc_tdmatag, txs->txs_dmamap);
1571 if (txs->txs_mbuf != NULL) {
1572 m_freem(txs->txs_mbuf);
1573 txs->txs_mbuf = NULL;
1576 STAILQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q);
1583 CTR4(KTR_CAS, "%s: CAS_TX_STATE_MACHINE %x CAS_TX_DESC_BASE %llx "
1585 __func__, CAS_READ_4(sc, CAS_TX_STATE_MACHINE),
1586 ((long long)CAS_READ_4(sc, CAS_TX_DESC_BASE_HI3) << 32) |
1587 CAS_READ_4(sc, CAS_TX_DESC_BASE_LO3),
1588 CAS_READ_4(sc, CAS_TX_COMP3));
1592 /* We freed some descriptors, so reset IFF_DRV_OACTIVE. */
1593 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1594 if (STAILQ_EMPTY(&sc->sc_txdirtyq))
1595 sc->sc_wdog_timer = 0;
1599 CTR3(KTR_CAS, "%s: %s: watchdog %d",
1600 device_get_name(sc->sc_dev), __func__, sc->sc_wdog_timer);
1605 cas_rint_timeout(void *arg)
1607 struct cas_softc *sc = arg;
1609 CAS_LOCK_ASSERT(sc, MA_NOTOWNED);
1615 cas_rint(struct cas_softc *sc)
1617 struct cas_rxdsoft *rxds, *rxds2;
1618 struct ifnet *ifp = sc->sc_ifp;
1619 struct mbuf *m, *m2;
1620 uint64_t word1, word2, word3, word4;
1622 u_int idx, idx2, len, off, skip;
1624 CAS_LOCK_ASSERT(sc, MA_NOTOWNED);
1626 callout_stop(&sc->sc_rx_ch);
1629 CTR2(KTR_CAS, "%s: %s", device_get_name(sc->sc_dev), __func__);
1632 #define PRINTWORD(n, delimiter) \
1633 printf("word ## n: 0x%016llx%c", (long long)word ## n, delimiter)
1635 #define SKIPASSERT(n) \
1636 KASSERT(sc->sc_rxcomps[sc->sc_rxcptr].crc_word ## n == 0, \
1637 ("%s: word ## n not 0", __func__))
1639 #define WORDTOH(n) \
1640 word ## n = le64toh(sc->sc_rxcomps[sc->sc_rxcptr].crc_word ## n)
1643 * Read the completion head register once. This limits
1644 * how long the following loop can execute.
1646 rxhead = CAS_READ_4(sc, CAS_RX_COMP_HEAD);
1648 CTR4(KTR_CAS, "%s: sc->sc_rxcptr %d, sc->sc_rxdptr %d, head %d",
1649 __func__, sc->rxcptr, sc->sc_rxdptr, rxhead);
1652 CAS_CDSYNC(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1653 for (; sc->sc_rxcptr != rxhead;
1654 sc->sc_rxcptr = CAS_NEXTRXCOMP(sc->sc_rxcptr)) {
1670 if ((ifp->if_flags & IFF_DEBUG) != 0) {
1671 printf(" completion %d: ", sc->sc_rxcptr);
1679 if (__predict_false(
1680 (word1 & CAS_RC1_TYPE_MASK) == CAS_RC1_TYPE_HW ||
1681 (word4 & CAS_RC4_ZERO) != 0)) {
1683 * The descriptor is still marked as owned, although
1684 * it is supposed to have completed. This has been
1685 * observed on some machines. Just exiting here
1686 * might leave the packet sitting around until another
1687 * one arrives to trigger a new interrupt, which is
1688 * generally undesirable, so set up a timeout.
1690 callout_reset(&sc->sc_rx_ch, CAS_RXOWN_TICKS,
1691 cas_rint_timeout, sc);
1695 if (__predict_false(
1696 (word4 & (CAS_RC4_BAD | CAS_RC4_LEN_MMATCH)) != 0)) {
1698 device_printf(sc->sc_dev,
1699 "receive error: CRC error\n");
1703 KASSERT(CAS_GET(word1, CAS_RC1_DATA_SIZE) == 0 ||
1704 CAS_GET(word2, CAS_RC2_HDR_SIZE) == 0,
1705 ("%s: data and header present", __func__));
1706 KASSERT((word1 & CAS_RC1_SPLIT_PKT) == 0 ||
1707 CAS_GET(word2, CAS_RC2_HDR_SIZE) == 0,
1708 ("%s: split and header present", __func__));
1709 KASSERT(CAS_GET(word1, CAS_RC1_DATA_SIZE) == 0 ||
1710 (word1 & CAS_RC1_RELEASE_HDR) == 0,
1711 ("%s: data present but header release", __func__));
1712 KASSERT(CAS_GET(word2, CAS_RC2_HDR_SIZE) == 0 ||
1713 (word1 & CAS_RC1_RELEASE_DATA) == 0,
1714 ("%s: header present but data release", __func__));
1716 if ((len = CAS_GET(word2, CAS_RC2_HDR_SIZE)) != 0) {
1717 idx = CAS_GET(word2, CAS_RC2_HDR_INDEX);
1718 off = CAS_GET(word2, CAS_RC2_HDR_OFF);
1720 CTR4(KTR_CAS, "%s: hdr at idx %d, off %d, len %d",
1721 __func__, idx, off, len);
1723 rxds = &sc->sc_rxdsoft[idx];
1724 MGETHDR(m, M_DONTWAIT, MT_DATA);
1726 refcount_acquire(&rxds->rxds_refcount);
1727 bus_dmamap_sync(sc->sc_rdmatag,
1728 rxds->rxds_dmamap, BUS_DMASYNC_POSTREAD);
1729 #if __FreeBSD_version < 800016
1730 MEXTADD(m, (caddr_t)rxds->rxds_buf +
1731 off * 256 + ETHER_ALIGN, len, cas_free,
1732 rxds, M_RDONLY, EXT_NET_DRV);
1734 MEXTADD(m, (caddr_t)rxds->rxds_buf +
1735 off * 256 + ETHER_ALIGN, len, cas_free,
1736 sc, (void *)(uintptr_t)idx,
1737 M_RDONLY, EXT_NET_DRV);
1739 if ((m->m_flags & M_EXT) == 0) {
1745 m->m_pkthdr.rcvif = ifp;
1746 m->m_pkthdr.len = m->m_len = len;
1748 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
1749 cas_rxcksum(m, CAS_GET(word4,
1752 (*ifp->if_input)(ifp, m);
1756 if ((word1 & CAS_RC1_RELEASE_HDR) != 0 &&
1757 refcount_release(&rxds->rxds_refcount) != 0)
1758 cas_add_rxdesc(sc, idx);
1759 } else if ((len = CAS_GET(word1, CAS_RC1_DATA_SIZE)) != 0) {
1760 idx = CAS_GET(word1, CAS_RC1_DATA_INDEX);
1761 off = CAS_GET(word1, CAS_RC1_DATA_OFF);
1763 CTR4(KTR_CAS, "%s: data at idx %d, off %d, len %d",
1764 __func__, idx, off, len);
1766 rxds = &sc->sc_rxdsoft[idx];
1767 MGETHDR(m, M_DONTWAIT, MT_DATA);
1769 refcount_acquire(&rxds->rxds_refcount);
1771 m->m_len = min(CAS_PAGE_SIZE - off, len);
1772 bus_dmamap_sync(sc->sc_rdmatag,
1773 rxds->rxds_dmamap, BUS_DMASYNC_POSTREAD);
1774 #if __FreeBSD_version < 800016
1775 MEXTADD(m, (caddr_t)rxds->rxds_buf + off,
1776 m->m_len, cas_free, rxds, M_RDONLY,
1779 MEXTADD(m, (caddr_t)rxds->rxds_buf + off,
1780 m->m_len, cas_free, sc,
1781 (void *)(uintptr_t)idx, M_RDONLY,
1784 if ((m->m_flags & M_EXT) == 0) {
1792 if ((word1 & CAS_RC1_SPLIT_PKT) != 0) {
1793 KASSERT((word1 & CAS_RC1_RELEASE_NEXT) != 0,
1794 ("%s: split but no release next",
1797 idx2 = CAS_GET(word2, CAS_RC2_NEXT_INDEX);
1799 CTR2(KTR_CAS, "%s: split at idx %d",
1802 rxds2 = &sc->sc_rxdsoft[idx2];
1804 MGET(m2, M_DONTWAIT, MT_DATA);
1807 &rxds2->rxds_refcount);
1808 m2->m_len = len - m->m_len;
1812 BUS_DMASYNC_POSTREAD);
1813 #if __FreeBSD_version < 800016
1815 (caddr_t)rxds2->rxds_buf,
1816 m2->m_len, cas_free,
1821 (caddr_t)rxds2->rxds_buf,
1822 m2->m_len, cas_free, sc,
1823 (void *)(uintptr_t)idx2,
1824 M_RDONLY, EXT_NET_DRV);
1826 if ((m2->m_flags & M_EXT) ==
1835 else if (m != NULL) {
1841 m->m_pkthdr.rcvif = ifp;
1842 m->m_pkthdr.len = len;
1844 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
1845 cas_rxcksum(m, CAS_GET(word4,
1848 (*ifp->if_input)(ifp, m);
1852 if ((word1 & CAS_RC1_RELEASE_DATA) != 0 &&
1853 refcount_release(&rxds->rxds_refcount) != 0)
1854 cas_add_rxdesc(sc, idx);
1855 if ((word1 & CAS_RC1_SPLIT_PKT) != 0 &&
1856 refcount_release(&rxds2->rxds_refcount) != 0)
1857 cas_add_rxdesc(sc, idx2);
1860 skip = CAS_GET(word1, CAS_RC1_SKIP);
1863 cas_rxcompinit(&sc->sc_rxcomps[sc->sc_rxcptr]);
1864 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1867 CAS_CDSYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1868 CAS_WRITE_4(sc, CAS_RX_COMP_TAIL, sc->sc_rxcptr);
1875 CTR4(KTR_CAS, "%s: done sc->sc_rxcptr %d, sc->sc_rxdptr %d, head %d",
1876 __func__, sc->rxcptr, sc->sc_rxdptr,
1877 CAS_READ_4(sc, CAS_RX_COMP_HEAD));
1882 cas_free(void *arg1, void *arg2)
1884 struct cas_rxdsoft *rxds;
1885 struct cas_softc *sc;
1888 #if __FreeBSD_version < 800016
1891 idx = rxds->rxds_idx;
1894 idx = (uintptr_t)arg2;
1895 rxds = &sc->sc_rxdsoft[idx];
1897 if (refcount_release(&rxds->rxds_refcount) == 0)
1901 * NB: this function can be called via m_freem(9) within
1905 cas_add_rxdesc(sc, idx);
1909 cas_add_rxdesc(struct cas_softc *sc, u_int idx)
1913 if ((locked = CAS_LOCK_OWNED(sc)) == 0)
1916 bus_dmamap_sync(sc->sc_rdmatag, sc->sc_rxdsoft[idx].rxds_dmamap,
1917 BUS_DMASYNC_PREREAD);
1918 CAS_UPDATE_RXDESC(sc, sc->sc_rxdptr, idx);
1919 sc->sc_rxdptr = CAS_NEXTRXDESC(sc->sc_rxdptr);
1922 * Update the RX kick register. This register has to point to the
1923 * descriptor after the last valid one (before the current batch)
1924 * and for optimum performance should be incremented in multiples
1925 * of 4 (the DMA engine fetches/updates descriptors in batches of 4).
1927 if ((sc->sc_rxdptr % 4) == 0) {
1928 CAS_CDSYNC(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1929 CAS_WRITE_4(sc, CAS_RX_KICK,
1930 (sc->sc_rxdptr + CAS_NRXDESC - 4) & CAS_NRXDESC_MASK);
1938 cas_eint(struct cas_softc *sc, u_int status)
1940 struct ifnet *ifp = sc->sc_ifp;
1942 CAS_LOCK_ASSERT(sc, MA_NOTOWNED);
1946 device_printf(sc->sc_dev, "%s: status 0x%x", __func__, status);
1947 if ((status & CAS_INTR_PCI_ERROR_INT) != 0) {
1948 status = CAS_READ_4(sc, CAS_ERROR_STATUS);
1949 printf(", PCI bus error 0x%x", status);
1950 if ((status & CAS_ERROR_OTHER) != 0) {
1951 status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
1952 printf(", PCI status 0x%x", status);
1953 pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
1958 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1960 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1961 taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
1967 struct cas_softc *sc = v;
1969 if (__predict_false((CAS_READ_4(sc, CAS_STATUS_ALIAS) &
1970 CAS_INTR_SUMMARY) == 0))
1971 return (FILTER_STRAY);
1973 /* Disable interrupts. */
1974 CAS_WRITE_4(sc, CAS_INTMASK, 0xffffffff);
1975 taskqueue_enqueue(sc->sc_tq, &sc->sc_intr_task);
1977 return (FILTER_HANDLED);
1981 cas_intr_task(void *arg, int pending __unused)
1983 struct cas_softc *sc = arg;
1984 struct ifnet *ifp = sc->sc_ifp;
1985 uint32_t status, status2;
1987 CAS_LOCK_ASSERT(sc, MA_NOTOWNED);
1989 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1992 status = CAS_READ_4(sc, CAS_STATUS);
1993 if (__predict_false((status & CAS_INTR_SUMMARY) == 0))
1997 CTR4(KTR_CAS, "%s: %s: cplt %x, status %x",
1998 device_get_name(sc->sc_dev), __func__,
1999 (status >> CAS_STATUS_TX_COMP3_SHIFT), (u_int)status);
2002 * PCS interrupts must be cleared, otherwise no traffic is passed!
2004 if ((status & CAS_INTR_PCS_INT) != 0) {
2006 CAS_READ_4(sc, CAS_PCS_INTR_STATUS) |
2007 CAS_READ_4(sc, CAS_PCS_INTR_STATUS);
2008 if ((status2 & CAS_PCS_INTR_LINK) != 0)
2009 device_printf(sc->sc_dev,
2010 "%s: PCS link status changed\n", __func__);
2012 if ((status & CAS_MAC_CTRL_STATUS) != 0) {
2013 status2 = CAS_READ_4(sc, CAS_MAC_CTRL_STATUS);
2014 if ((status2 & CAS_MAC_CTRL_PAUSE) != 0)
2015 device_printf(sc->sc_dev,
2016 "%s: PAUSE received (PAUSE time %d slots)\n",
2018 (status2 & CAS_MAC_CTRL_STATUS_PT_MASK) >>
2019 CAS_MAC_CTRL_STATUS_PT_SHFT);
2020 if ((status2 & CAS_MAC_CTRL_PAUSE) != 0)
2021 device_printf(sc->sc_dev,
2022 "%s: transited to PAUSE state\n", __func__);
2023 if ((status2 & CAS_MAC_CTRL_NON_PAUSE) != 0)
2024 device_printf(sc->sc_dev,
2025 "%s: transited to non-PAUSE state\n", __func__);
2027 if ((status & CAS_INTR_MIF) != 0)
2028 device_printf(sc->sc_dev, "%s: MIF interrupt\n", __func__);
2031 if (__predict_false((status &
2032 (CAS_INTR_TX_TAG_ERR | CAS_INTR_RX_TAG_ERR |
2033 CAS_INTR_RX_LEN_MMATCH | CAS_INTR_PCI_ERROR_INT)) != 0)) {
2034 cas_eint(sc, status);
2038 if (__predict_false(status & CAS_INTR_TX_MAC_INT)) {
2039 status2 = CAS_READ_4(sc, CAS_MAC_TX_STATUS);
2041 (CAS_MAC_TX_UNDERRUN | CAS_MAC_TX_MAX_PKT_ERR)) != 0)
2042 sc->sc_ifp->if_oerrors++;
2043 else if ((status2 & ~CAS_MAC_TX_FRAME_XMTD) != 0)
2044 device_printf(sc->sc_dev,
2045 "MAC TX fault, status %x\n", status2);
2048 if (__predict_false(status & CAS_INTR_RX_MAC_INT)) {
2049 status2 = CAS_READ_4(sc, CAS_MAC_RX_STATUS);
2050 if ((status2 & CAS_MAC_RX_OVERFLOW) != 0)
2051 sc->sc_ifp->if_ierrors++;
2052 else if ((status2 & ~CAS_MAC_RX_FRAME_RCVD) != 0)
2053 device_printf(sc->sc_dev,
2054 "MAC RX fault, status %x\n", status2);
2058 (CAS_INTR_RX_DONE | CAS_INTR_RX_BUF_NA | CAS_INTR_RX_COMP_FULL |
2059 CAS_INTR_RX_BUF_AEMPTY | CAS_INTR_RX_COMP_AFULL)) != 0) {
2062 if (__predict_false((status &
2063 (CAS_INTR_RX_BUF_NA | CAS_INTR_RX_COMP_FULL |
2064 CAS_INTR_RX_BUF_AEMPTY | CAS_INTR_RX_COMP_AFULL)) != 0))
2065 device_printf(sc->sc_dev,
2066 "RX fault, status %x\n", status);
2071 (CAS_INTR_TX_INT_ME | CAS_INTR_TX_ALL | CAS_INTR_TX_DONE)) != 0) {
2077 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
2079 else if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
2080 taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
2082 status = CAS_READ_4(sc, CAS_STATUS_ALIAS);
2083 if (__predict_false((status & CAS_INTR_SUMMARY) != 0)) {
2084 taskqueue_enqueue(sc->sc_tq, &sc->sc_intr_task);
2089 /* Re-enable interrupts. */
2090 CAS_WRITE_4(sc, CAS_INTMASK,
2091 ~(CAS_INTR_TX_INT_ME | CAS_INTR_TX_TAG_ERR |
2092 CAS_INTR_RX_DONE | CAS_INTR_RX_BUF_NA | CAS_INTR_RX_TAG_ERR |
2093 CAS_INTR_RX_COMP_FULL | CAS_INTR_RX_BUF_AEMPTY |
2094 CAS_INTR_RX_COMP_AFULL | CAS_INTR_RX_LEN_MMATCH |
2095 CAS_INTR_PCI_ERROR_INT
2097 | CAS_INTR_PCS_INT | CAS_INTR_MIF
2103 cas_watchdog(struct cas_softc *sc)
2105 struct ifnet *ifp = sc->sc_ifp;
2107 CAS_LOCK_ASSERT(sc, MA_OWNED);
2111 "%s: CAS_RX_CONFIG %x CAS_MAC_RX_STATUS %x CAS_MAC_RX_CONFIG %x",
2112 __func__, CAS_READ_4(sc, CAS_RX_CONFIG),
2113 CAS_READ_4(sc, CAS_MAC_RX_STATUS),
2114 CAS_READ_4(sc, CAS_MAC_RX_CONFIG));
2116 "%s: CAS_TX_CONFIG %x CAS_MAC_TX_STATUS %x CAS_MAC_TX_CONFIG %x",
2117 __func__, CAS_READ_4(sc, CAS_TX_CONFIG),
2118 CAS_READ_4(sc, CAS_MAC_TX_STATUS),
2119 CAS_READ_4(sc, CAS_MAC_TX_CONFIG));
2122 if (sc->sc_wdog_timer == 0 || --sc->sc_wdog_timer != 0)
2125 if ((sc->sc_flags & CAS_LINK) != 0)
2126 device_printf(sc->sc_dev, "device timeout\n");
2127 else if (bootverbose)
2128 device_printf(sc->sc_dev, "device timeout (no link)\n");
2131 /* Try to get more packets going. */
2132 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2133 cas_init_locked(sc);
2134 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
2135 taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
2139 cas_mifinit(struct cas_softc *sc)
2142 /* Configure the MIF in frame mode. */
2143 CAS_WRITE_4(sc, CAS_MIF_CONF,
2144 CAS_READ_4(sc, CAS_MIF_CONF) & ~CAS_MIF_CONF_BB_MODE);
2145 CAS_BARRIER(sc, CAS_MIF_CONF, 4,
2146 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2152 * The MII interface supports at least three different operating modes:
2154 * Bitbang mode is implemented using data, clock and output enable registers.
2156 * Frame mode is implemented by loading a complete frame into the frame
2157 * register and polling the valid bit for completion.
2159 * Polling mode uses the frame register but completion is indicated by
2164 cas_mii_readreg(device_t dev, int phy, int reg)
2166 struct cas_softc *sc;
2170 #ifdef CAS_DEBUG_PHY
2171 printf("%s: phy %d reg %d\n", __func__, phy, reg);
2174 sc = device_get_softc(dev);
2175 if (sc->sc_phyad != -1 && phy != sc->sc_phyad)
2178 if ((sc->sc_flags & CAS_SERDES) != 0) {
2184 reg = CAS_PCS_STATUS;
2193 reg = CAS_PCS_ANLPAR;
2196 return (EXTSR_1000XFDX | EXTSR_1000XHDX);
2198 device_printf(sc->sc_dev,
2199 "%s: unhandled register %d\n", __func__, reg);
2202 return (CAS_READ_4(sc, reg));
2205 /* Construct the frame command. */
2206 v = CAS_MIF_FRAME_READ |
2207 (phy << CAS_MIF_FRAME_PHY_SHFT) |
2208 (reg << CAS_MIF_FRAME_REG_SHFT);
2210 CAS_WRITE_4(sc, CAS_MIF_FRAME, v);
2211 CAS_BARRIER(sc, CAS_MIF_FRAME, 4,
2212 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2213 for (n = 0; n < 100; n++) {
2215 v = CAS_READ_4(sc, CAS_MIF_FRAME);
2216 if (v & CAS_MIF_FRAME_TA_LSB)
2217 return (v & CAS_MIF_FRAME_DATA);
2220 device_printf(sc->sc_dev, "%s: timed out\n", __func__);
2225 cas_mii_writereg(device_t dev, int phy, int reg, int val)
2227 struct cas_softc *sc;
2231 #ifdef CAS_DEBUG_PHY
2232 printf("%s: phy %d reg %d val %x\n", phy, reg, val, __func__);
2235 sc = device_get_softc(dev);
2236 if (sc->sc_phyad != -1 && phy != sc->sc_phyad)
2239 if ((sc->sc_flags & CAS_SERDES) != 0) {
2242 reg = CAS_PCS_STATUS;
2246 if ((val & CAS_PCS_CTRL_RESET) == 0)
2248 CAS_WRITE_4(sc, CAS_PCS_CTRL, val);
2249 CAS_BARRIER(sc, CAS_PCS_CTRL, 4,
2250 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2251 if (!cas_bitwait(sc, CAS_PCS_CTRL,
2252 CAS_PCS_CTRL_RESET, 0))
2253 device_printf(sc->sc_dev,
2254 "cannot reset PCS\n");
2257 CAS_WRITE_4(sc, CAS_PCS_CONF, 0);
2258 CAS_BARRIER(sc, CAS_PCS_CONF, 4,
2259 BUS_SPACE_BARRIER_WRITE);
2260 CAS_WRITE_4(sc, CAS_PCS_ANAR, val);
2261 CAS_BARRIER(sc, CAS_PCS_ANAR, 4,
2262 BUS_SPACE_BARRIER_WRITE);
2263 CAS_WRITE_4(sc, CAS_PCS_SERDES_CTRL,
2264 CAS_PCS_SERDES_CTRL_ESD);
2265 CAS_BARRIER(sc, CAS_PCS_CONF, 4,
2266 BUS_SPACE_BARRIER_WRITE);
2267 CAS_WRITE_4(sc, CAS_PCS_CONF,
2269 CAS_BARRIER(sc, CAS_PCS_CONF, 4,
2270 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2273 reg = CAS_PCS_ANLPAR;
2276 device_printf(sc->sc_dev,
2277 "%s: unhandled register %d\n", __func__, reg);
2280 CAS_WRITE_4(sc, reg, val);
2281 CAS_BARRIER(sc, reg, 4,
2282 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2286 /* Construct the frame command. */
2287 v = CAS_MIF_FRAME_WRITE |
2288 (phy << CAS_MIF_FRAME_PHY_SHFT) |
2289 (reg << CAS_MIF_FRAME_REG_SHFT) |
2290 (val & CAS_MIF_FRAME_DATA);
2292 CAS_WRITE_4(sc, CAS_MIF_FRAME, v);
2293 CAS_BARRIER(sc, CAS_MIF_FRAME, 4,
2294 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2295 for (n = 0; n < 100; n++) {
2297 v = CAS_READ_4(sc, CAS_MIF_FRAME);
2298 if (v & CAS_MIF_FRAME_TA_LSB)
2302 device_printf(sc->sc_dev, "%s: timed out\n", __func__);
2307 cas_mii_statchg(device_t dev)
2309 struct cas_softc *sc;
2312 uint32_t rxcfg, txcfg, v;
2314 sc = device_get_softc(dev);
2317 CAS_LOCK_ASSERT(sc, MA_OWNED);
2320 if ((ifp->if_flags & IFF_DEBUG) != 0)
2321 device_printf(sc->sc_dev, "%s: status change: PHY = %d\n",
2322 __func__, sc->sc_phyad);
2325 if ((sc->sc_mii->mii_media_status & IFM_ACTIVE) != 0 &&
2326 IFM_SUBTYPE(sc->sc_mii->mii_media_active) != IFM_NONE)
2327 sc->sc_flags |= CAS_LINK;
2329 sc->sc_flags &= ~CAS_LINK;
2331 switch (IFM_SUBTYPE(sc->sc_mii->mii_media_active)) {
2343 * The configuration done here corresponds to the steps F) and
2344 * G) and as far as enabling of RX and TX MAC goes also step H)
2345 * of the initialization sequence outlined in section 11.2.1 of
2346 * the Cassini+ ASIC Specification.
2349 rxcfg = CAS_READ_4(sc, CAS_MAC_RX_CONF);
2350 rxcfg &= ~(CAS_MAC_RX_CONF_EN | CAS_MAC_RX_CONF_CARR);
2351 txcfg = CAS_MAC_TX_CONF_EN_IPG0 | CAS_MAC_TX_CONF_NGU |
2352 CAS_MAC_TX_CONF_NGUL;
2353 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) != 0)
2354 txcfg |= CAS_MAC_TX_CONF_ICARR | CAS_MAC_TX_CONF_ICOLLIS;
2355 else if (gigabit != 0) {
2356 rxcfg |= CAS_MAC_RX_CONF_CARR;
2357 txcfg |= CAS_MAC_TX_CONF_CARR;
2359 CAS_WRITE_4(sc, CAS_MAC_TX_CONF, 0);
2360 CAS_BARRIER(sc, CAS_MAC_TX_CONF, 4,
2361 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2362 if (!cas_bitwait(sc, CAS_MAC_TX_CONF, CAS_MAC_TX_CONF_EN, 0))
2363 device_printf(sc->sc_dev, "cannot disable TX MAC\n");
2364 CAS_WRITE_4(sc, CAS_MAC_TX_CONF, txcfg);
2365 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, 0);
2366 CAS_BARRIER(sc, CAS_MAC_RX_CONF, 4,
2367 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2368 if (!cas_bitwait(sc, CAS_MAC_RX_CONF, CAS_MAC_RX_CONF_EN, 0))
2369 device_printf(sc->sc_dev, "cannot disable RX MAC\n");
2370 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, rxcfg);
2372 v = CAS_READ_4(sc, CAS_MAC_CTRL_CONF) &
2373 ~(CAS_MAC_CTRL_CONF_TXP | CAS_MAC_CTRL_CONF_RXP);
2375 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) &
2376 IFM_ETH_RXPAUSE) != 0)
2377 v |= CAS_MAC_CTRL_CONF_RXP;
2378 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) &
2379 IFM_ETH_TXPAUSE) != 0)
2380 v |= CAS_MAC_CTRL_CONF_TXP;
2382 CAS_WRITE_4(sc, CAS_MAC_CTRL_CONF, v);
2385 * All supported chips have a bug causing incorrect checksum
2386 * to be calculated when letting them strip the FCS in half-
2387 * duplex mode. In theory we could disable FCS stripping and
2388 * manually adjust the checksum accordingly. It seems to make
2389 * more sense to optimze for the common case and just disable
2390 * hardware checksumming in half-duplex mode though.
2392 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) == 0) {
2393 ifp->if_capenable &= ~IFCAP_HWCSUM;
2394 ifp->if_hwassist = 0;
2395 } else if ((sc->sc_flags & CAS_NO_CSUM) == 0) {
2396 ifp->if_capenable = ifp->if_capabilities;
2397 ifp->if_hwassist = CAS_CSUM_FEATURES;
2400 if (sc->sc_variant == CAS_SATURN) {
2401 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) == 0)
2402 /* silicon bug workaround */
2403 CAS_WRITE_4(sc, CAS_MAC_PREAMBLE_LEN, 0x41);
2405 CAS_WRITE_4(sc, CAS_MAC_PREAMBLE_LEN, 0x7);
2408 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) == 0 &&
2410 CAS_WRITE_4(sc, CAS_MAC_SLOT_TIME,
2411 CAS_MAC_SLOT_TIME_CARR);
2413 CAS_WRITE_4(sc, CAS_MAC_SLOT_TIME,
2414 CAS_MAC_SLOT_TIME_NORM);
2416 /* XIF Configuration */
2417 v = CAS_MAC_XIF_CONF_TX_OE | CAS_MAC_XIF_CONF_LNKLED;
2418 if ((sc->sc_flags & CAS_SERDES) == 0) {
2419 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) == 0)
2420 v |= CAS_MAC_XIF_CONF_NOECHO;
2421 v |= CAS_MAC_XIF_CONF_BUF_OE;
2424 v |= CAS_MAC_XIF_CONF_GMII;
2425 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & IFM_FDX) != 0)
2426 v |= CAS_MAC_XIF_CONF_FDXLED;
2427 CAS_WRITE_4(sc, CAS_MAC_XIF_CONF, v);
2429 if ((sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
2430 (sc->sc_flags & CAS_LINK) != 0) {
2431 CAS_WRITE_4(sc, CAS_MAC_TX_CONF,
2432 txcfg | CAS_MAC_TX_CONF_EN);
2433 CAS_WRITE_4(sc, CAS_MAC_RX_CONF,
2434 rxcfg | CAS_MAC_RX_CONF_EN);
2439 cas_mediachange(struct ifnet *ifp)
2441 struct cas_softc *sc = ifp->if_softc;
2444 /* XXX add support for serial media. */
2447 error = mii_mediachg(sc->sc_mii);
2453 cas_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
2455 struct cas_softc *sc = ifp->if_softc;
2458 if ((ifp->if_flags & IFF_UP) == 0) {
2463 mii_pollstat(sc->sc_mii);
2464 ifmr->ifm_active = sc->sc_mii->mii_media_active;
2465 ifmr->ifm_status = sc->sc_mii->mii_media_status;
2470 cas_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2472 struct cas_softc *sc = ifp->if_softc;
2473 struct ifreq *ifr = (struct ifreq *)data;
2480 if ((ifp->if_flags & IFF_UP) != 0) {
2481 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 &&
2482 ((ifp->if_flags ^ sc->sc_ifflags) &
2483 (IFF_ALLMULTI | IFF_PROMISC)) != 0)
2486 cas_init_locked(sc);
2487 } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
2489 sc->sc_ifflags = ifp->if_flags;
2494 if ((sc->sc_flags & CAS_NO_CSUM) != 0) {
2499 ifp->if_capenable = ifr->ifr_reqcap;
2500 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
2501 ifp->if_hwassist = CAS_CSUM_FEATURES;
2503 ifp->if_hwassist = 0;
2509 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
2514 if ((ifr->ifr_mtu < ETHERMIN) ||
2515 (ifr->ifr_mtu > ETHERMTU_JUMBO))
2518 ifp->if_mtu = ifr->ifr_mtu;
2522 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii->mii_media, cmd);
2525 error = ether_ioctl(ifp, cmd, data);
2533 cas_setladrf(struct cas_softc *sc)
2535 struct ifnet *ifp = sc->sc_ifp;
2536 struct ifmultiaddr *inm;
2541 CAS_LOCK_ASSERT(sc, MA_OWNED);
2543 /* Get the current RX configuration. */
2544 v = CAS_READ_4(sc, CAS_MAC_RX_CONF);
2547 * Turn off promiscuous mode, promiscuous group mode (all multicast),
2548 * and hash filter. Depending on the case, the right bit will be
2551 v &= ~(CAS_MAC_RX_CONF_PROMISC | CAS_MAC_RX_CONF_HFILTER |
2552 CAS_MAC_RX_CONF_PGRP);
2554 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, v);
2555 CAS_BARRIER(sc, CAS_MAC_RX_CONF, 4,
2556 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
2557 if (!cas_bitwait(sc, CAS_MAC_RX_CONF, CAS_MAC_RX_CONF_HFILTER, 0))
2558 device_printf(sc->sc_dev, "cannot disable RX hash filter\n");
2560 if ((ifp->if_flags & IFF_PROMISC) != 0) {
2561 v |= CAS_MAC_RX_CONF_PROMISC;
2564 if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
2565 v |= CAS_MAC_RX_CONF_PGRP;
2570 * Set up multicast address filter by passing all multicast
2571 * addresses through a crc generator, and then using the high
2572 * order 8 bits as an index into the 256 bit logical address
2573 * filter. The high order 4 bits selects the word, while the
2574 * other 4 bits select the bit within the word (where bit 0
2578 /* Clear the hash table. */
2579 memset(hash, 0, sizeof(hash));
2581 if_maddr_rlock(ifp);
2582 TAILQ_FOREACH(inm, &ifp->if_multiaddrs, ifma_link) {
2583 if (inm->ifma_addr->sa_family != AF_LINK)
2585 crc = ether_crc32_le(LLADDR((struct sockaddr_dl *)
2586 inm->ifma_addr), ETHER_ADDR_LEN);
2588 /* We just want the 8 most significant bits. */
2591 /* Set the corresponding bit in the filter. */
2592 hash[crc >> 4] |= 1 << (15 - (crc & 15));
2594 if_maddr_runlock(ifp);
2596 v |= CAS_MAC_RX_CONF_HFILTER;
2598 /* Now load the hash table into the chip (if we are using it). */
2599 for (i = 0; i < 16; i++)
2601 CAS_MAC_HASH0 + i * (CAS_MAC_HASH1 - CAS_MAC_HASH0),
2605 CAS_WRITE_4(sc, CAS_MAC_RX_CONF, v);
2608 static int cas_pci_attach(device_t dev);
2609 static int cas_pci_detach(device_t dev);
2610 static int cas_pci_probe(device_t dev);
2611 static int cas_pci_resume(device_t dev);
2612 static int cas_pci_suspend(device_t dev);
2614 static device_method_t cas_pci_methods[] = {
2615 /* Device interface */
2616 DEVMETHOD(device_probe, cas_pci_probe),
2617 DEVMETHOD(device_attach, cas_pci_attach),
2618 DEVMETHOD(device_detach, cas_pci_detach),
2619 DEVMETHOD(device_suspend, cas_pci_suspend),
2620 DEVMETHOD(device_resume, cas_pci_resume),
2621 /* Use the suspend handler here, it is all that is required. */
2622 DEVMETHOD(device_shutdown, cas_pci_suspend),
2625 DEVMETHOD(bus_print_child, bus_generic_print_child),
2626 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
2629 DEVMETHOD(miibus_readreg, cas_mii_readreg),
2630 DEVMETHOD(miibus_writereg, cas_mii_writereg),
2631 DEVMETHOD(miibus_statchg, cas_mii_statchg),
2636 static driver_t cas_pci_driver = {
2639 sizeof(struct cas_softc)
2642 DRIVER_MODULE(cas, pci, cas_pci_driver, cas_devclass, 0, 0);
2643 DRIVER_MODULE(miibus, cas, miibus_driver, miibus_devclass, 0, 0);
2644 MODULE_DEPEND(cas, pci, 1, 1, 1);
2646 static const struct cas_pci_dev {
2650 const char *cpd_desc;
2651 } const cas_pci_devlist[] = {
2652 { 0x0035100b, 0x0, CAS_SATURN, "NS DP83065 Saturn Gigabit Ethernet" },
2653 { 0xabba108e, 0x10, CAS_CASPLUS, "Sun Cassini+ Gigabit Ethernet" },
2654 { 0xabba108e, 0x0, CAS_CAS, "Sun Cassini Gigabit Ethernet" },
2659 cas_pci_probe(device_t dev)
2663 for (i = 0; cas_pci_devlist[i].cpd_desc != NULL; i++) {
2664 if (pci_get_devid(dev) == cas_pci_devlist[i].cpd_devid &&
2665 pci_get_revid(dev) >= cas_pci_devlist[i].cpd_revid) {
2666 device_set_desc(dev, cas_pci_devlist[i].cpd_desc);
2667 return (BUS_PROBE_DEFAULT);
2674 static struct resource_spec cas_pci_res_spec[] = {
2675 { SYS_RES_IRQ, 0, RF_SHAREABLE | RF_ACTIVE }, /* CAS_RES_INTR */
2676 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, /* CAS_RES_MEM */
2680 #define CAS_LOCAL_MAC_ADDRESS "local-mac-address"
2681 #define CAS_PHY_INTERFACE "phy-interface"
2682 #define CAS_PHY_TYPE "phy-type"
2683 #define CAS_PHY_TYPE_PCS "pcs"
2686 cas_pci_attach(device_t dev)
2688 char buf[sizeof(CAS_LOCAL_MAC_ADDRESS)];
2689 struct cas_softc *sc;
2691 #if !(defined(__powerpc__) || defined(__sparc64__))
2692 u_char enaddr[4][ETHER_ADDR_LEN];
2693 u_int j, k, lma, pcs[4], phy;
2696 sc = device_get_softc(dev);
2697 sc->sc_variant = CAS_UNKNOWN;
2698 for (i = 0; cas_pci_devlist[i].cpd_desc != NULL; i++) {
2699 if (pci_get_devid(dev) == cas_pci_devlist[i].cpd_devid &&
2700 pci_get_revid(dev) >= cas_pci_devlist[i].cpd_revid) {
2701 sc->sc_variant = cas_pci_devlist[i].cpd_variant;
2705 if (sc->sc_variant == CAS_UNKNOWN) {
2706 device_printf(dev, "unknown adaptor\n");
2710 pci_enable_busmaster(dev);
2713 if (sc->sc_variant == CAS_CAS && pci_get_devid(dev) < 0x02)
2714 /* Hardware checksumming may hang TX. */
2715 sc->sc_flags |= CAS_NO_CSUM;
2716 if (sc->sc_variant == CAS_CASPLUS || sc->sc_variant == CAS_SATURN)
2717 sc->sc_flags |= CAS_REG_PLUS;
2718 if (sc->sc_variant == CAS_CAS ||
2719 (sc->sc_variant == CAS_CASPLUS && pci_get_revid(dev) < 0x11))
2720 sc->sc_flags |= CAS_TABORT;
2722 device_printf(dev, "flags=0x%x\n", sc->sc_flags);
2724 if (bus_alloc_resources(dev, cas_pci_res_spec, sc->sc_res)) {
2725 device_printf(dev, "failed to allocate resources\n");
2726 bus_release_resources(dev, cas_pci_res_spec, sc->sc_res);
2730 CAS_LOCK_INIT(sc, device_get_nameunit(dev));
2732 #if defined(__powerpc__) || defined(__sparc64__)
2733 OF_getetheraddr(dev, sc->sc_enaddr);
2734 if (OF_getprop(ofw_bus_get_node(dev), CAS_PHY_INTERFACE, buf,
2735 sizeof(buf)) > 0 || OF_getprop(ofw_bus_get_node(dev),
2736 CAS_PHY_TYPE, buf, sizeof(buf)) > 0) {
2737 buf[sizeof(buf) - 1] = '\0';
2738 if (strcmp(buf, CAS_PHY_TYPE_PCS) == 0)
2739 sc->sc_flags |= CAS_SERDES;
2743 * Dig out VPD (vital product data) and read the MAC address as well
2744 * as the PHY type. The VPD resides in the PCI Expansion ROM (PCI
2745 * FCode) and can't be accessed via the PCI capability pointer.
2746 * SUNW,pci-ce and SUNW,pci-qge use the Enhanced VPD format described
2747 * in the free US Patent 7149820.
2750 #define PCI_ROMHDR_SIZE 0x1c
2751 #define PCI_ROMHDR_SIG 0x00
2752 #define PCI_ROMHDR_SIG_MAGIC 0xaa55 /* little endian */
2753 #define PCI_ROMHDR_PTR_DATA 0x18
2754 #define PCI_ROM_SIZE 0x18
2755 #define PCI_ROM_SIG 0x00
2756 #define PCI_ROM_SIG_MAGIC 0x52494350 /* "PCIR", endian */
2758 #define PCI_ROM_VENDOR 0x04
2759 #define PCI_ROM_DEVICE 0x06
2760 #define PCI_ROM_PTR_VPD 0x08
2761 #define PCI_VPDRES_BYTE0 0x00
2762 #define PCI_VPDRES_ISLARGE(x) ((x) & 0x80)
2763 #define PCI_VPDRES_LARGE_NAME(x) ((x) & 0x7f)
2764 #define PCI_VPDRES_LARGE_LEN_LSB 0x01
2765 #define PCI_VPDRES_LARGE_LEN_MSB 0x02
2766 #define PCI_VPDRES_LARGE_SIZE 0x03
2767 #define PCI_VPDRES_TYPE_ID_STRING 0x02 /* large */
2768 #define PCI_VPDRES_TYPE_VPD 0x10 /* large */
2769 #define PCI_VPD_KEY0 0x00
2770 #define PCI_VPD_KEY1 0x01
2771 #define PCI_VPD_LEN 0x02
2772 #define PCI_VPD_SIZE 0x03
2774 #define CAS_ROM_READ_1(sc, offs) \
2775 CAS_READ_1((sc), CAS_PCI_ROM_OFFSET + (offs))
2776 #define CAS_ROM_READ_2(sc, offs) \
2777 CAS_READ_2((sc), CAS_PCI_ROM_OFFSET + (offs))
2778 #define CAS_ROM_READ_4(sc, offs) \
2779 CAS_READ_4((sc), CAS_PCI_ROM_OFFSET + (offs))
2782 memset(enaddr, 0, sizeof(enaddr));
2783 memset(pcs, 0, sizeof(pcs));
2785 /* Enable PCI Expansion ROM access. */
2786 CAS_WRITE_4(sc, CAS_BIM_LDEV_OEN,
2787 CAS_BIM_LDEV_OEN_PAD | CAS_BIM_LDEV_OEN_PROM);
2789 /* Read PCI Expansion ROM header. */
2790 if (CAS_ROM_READ_2(sc, PCI_ROMHDR_SIG) != PCI_ROMHDR_SIG_MAGIC ||
2791 (i = CAS_ROM_READ_2(sc, PCI_ROMHDR_PTR_DATA)) <
2793 device_printf(dev, "unexpected PCI Expansion ROM header\n");
2797 /* Read PCI Expansion ROM data. */
2798 if (CAS_ROM_READ_4(sc, i + PCI_ROM_SIG) != PCI_ROM_SIG_MAGIC ||
2799 CAS_ROM_READ_2(sc, i + PCI_ROM_VENDOR) != pci_get_vendor(dev) ||
2800 CAS_ROM_READ_2(sc, i + PCI_ROM_DEVICE) != pci_get_device(dev) ||
2801 (j = CAS_ROM_READ_2(sc, i + PCI_ROM_PTR_VPD)) <
2803 device_printf(dev, "unexpected PCI Expansion ROM data\n");
2809 if (PCI_VPDRES_ISLARGE(CAS_ROM_READ_1(sc,
2810 j + PCI_VPDRES_BYTE0)) == 0) {
2811 device_printf(dev, "no large PCI VPD\n");
2815 i = (CAS_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_MSB) << 8) |
2816 CAS_ROM_READ_1(sc, j + PCI_VPDRES_LARGE_LEN_LSB);
2817 switch (PCI_VPDRES_LARGE_NAME(CAS_ROM_READ_1(sc,
2818 j + PCI_VPDRES_BYTE0))) {
2819 case PCI_VPDRES_TYPE_ID_STRING:
2820 /* Skip identifier string. */
2821 j += PCI_VPDRES_LARGE_SIZE + i;
2823 case PCI_VPDRES_TYPE_VPD:
2824 for (j += PCI_VPDRES_LARGE_SIZE; i > 0;
2825 i -= PCI_VPD_SIZE + CAS_ROM_READ_1(sc, j + PCI_VPD_LEN),
2826 j += PCI_VPD_SIZE + CAS_ROM_READ_1(sc, j + PCI_VPD_LEN)) {
2827 if (CAS_ROM_READ_1(sc, j + PCI_VPD_KEY0) != 'Z')
2828 /* no Enhanced VPD */
2830 if (CAS_ROM_READ_1(sc, j + PCI_VPD_SIZE) != 'I')
2831 /* no instance property */
2833 if (CAS_ROM_READ_1(sc, j + PCI_VPD_SIZE + 3) == 'B') {
2835 if (CAS_ROM_READ_1(sc,
2836 j + PCI_VPD_SIZE + 4) != ETHER_ADDR_LEN)
2838 bus_read_region_1(sc->sc_res[CAS_RES_MEM],
2839 CAS_PCI_ROM_OFFSET + j + PCI_VPD_SIZE + 5,
2841 buf[sizeof(buf) - 1] = '\0';
2842 if (strcmp(buf, CAS_LOCAL_MAC_ADDRESS) != 0)
2844 bus_read_region_1(sc->sc_res[CAS_RES_MEM],
2845 CAS_PCI_ROM_OFFSET + j + PCI_VPD_SIZE +
2846 5 + sizeof(CAS_LOCAL_MAC_ADDRESS),
2847 enaddr[lma], sizeof(enaddr[lma]));
2849 if (lma == 4 && phy == 4)
2851 } else if (CAS_ROM_READ_1(sc, j + PCI_VPD_SIZE + 3) ==
2854 if (CAS_ROM_READ_1(sc,
2855 j + PCI_VPD_SIZE + 4) !=
2856 sizeof(CAS_PHY_TYPE_PCS))
2858 bus_read_region_1(sc->sc_res[CAS_RES_MEM],
2859 CAS_PCI_ROM_OFFSET + j + PCI_VPD_SIZE + 5,
2861 buf[sizeof(buf) - 1] = '\0';
2862 if (strcmp(buf, CAS_PHY_INTERFACE) == 0)
2863 k = sizeof(CAS_PHY_INTERFACE);
2864 else if (strcmp(buf, CAS_PHY_TYPE) == 0)
2865 k = sizeof(CAS_PHY_TYPE);
2868 bus_read_region_1(sc->sc_res[CAS_RES_MEM],
2869 CAS_PCI_ROM_OFFSET + j + PCI_VPD_SIZE +
2870 5 + k, buf, sizeof(buf));
2871 buf[sizeof(buf) - 1] = '\0';
2872 if (strcmp(buf, CAS_PHY_TYPE_PCS) == 0)
2875 if (lma == 4 && phy == 4)
2881 device_printf(dev, "unexpected PCI VPD\n");
2886 CAS_WRITE_4(sc, CAS_BIM_LDEV_OEN, 0);
2889 device_printf(dev, "could not determine Ethernet address\n");
2893 if (lma > 1 && pci_get_slot(dev) < sizeof(enaddr) / sizeof(*enaddr))
2894 i = pci_get_slot(dev);
2895 memcpy(sc->sc_enaddr, enaddr[i], ETHER_ADDR_LEN);
2898 device_printf(dev, "could not determine PHY type\n");
2902 if (phy > 1 && pci_get_slot(dev) < sizeof(pcs) / sizeof(*pcs))
2903 i = pci_get_slot(dev);
2905 sc->sc_flags |= CAS_SERDES;
2908 if (cas_attach(sc) != 0) {
2909 device_printf(dev, "could not be attached\n");
2913 if (bus_setup_intr(dev, sc->sc_res[CAS_RES_INTR], INTR_TYPE_NET |
2914 INTR_MPSAFE, cas_intr, NULL, sc, &sc->sc_ih) != 0) {
2915 device_printf(dev, "failed to set up interrupt\n");
2922 CAS_LOCK_DESTROY(sc);
2923 bus_release_resources(dev, cas_pci_res_spec, sc->sc_res);
2928 cas_pci_detach(device_t dev)
2930 struct cas_softc *sc;
2932 sc = device_get_softc(dev);
2933 bus_teardown_intr(dev, sc->sc_res[CAS_RES_INTR], sc->sc_ih);
2935 CAS_LOCK_DESTROY(sc);
2936 bus_release_resources(dev, cas_pci_res_spec, sc->sc_res);
2941 cas_pci_suspend(device_t dev)
2944 cas_suspend(device_get_softc(dev));
2949 cas_pci_resume(device_t dev)
2952 cas_resume(device_get_softc(dev));