2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #ifdef HAVE_KERNEL_OPTION_HEADERS
37 #include "opt_device_polling.h"
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/sockio.h>
44 #include <sys/malloc.h>
45 #include <sys/kernel.h>
46 #include <sys/module.h>
47 #include <sys/socket.h>
48 #include <sys/sysctl.h>
51 #include <net/if_arp.h>
52 #include <net/ethernet.h>
53 #include <net/if_dl.h>
54 #include <net/if_media.h>
55 #include <net/if_types.h>
56 #include <net/if_vlan_var.h>
60 #include <vm/vm.h> /* for vtophys */
61 #include <vm/pmap.h> /* for vtophys */
62 #include <machine/bus.h>
63 #include <machine/resource.h>
67 #include <dev/mii/mii.h>
68 #include <dev/mii/miivar.h>
70 #include <dev/pci/pcireg.h>
71 #include <dev/pci/pcivar.h>
73 /* "device miibus" required. See GENERIC if you get errors here. */
74 #include "miibus_if.h"
76 #define STE_USEIOSPACE
78 #include <dev/ste/if_stereg.h>
80 MODULE_DEPEND(ste, pci, 1, 1, 1);
81 MODULE_DEPEND(ste, ether, 1, 1, 1);
82 MODULE_DEPEND(ste, miibus, 1, 1, 1);
85 * Various supported device vendors/types and their names.
87 static struct ste_type ste_devs[] = {
88 { ST_VENDORID, ST_DEVICEID_ST201_1, "Sundance ST201 10/100BaseTX" },
89 { ST_VENDORID, ST_DEVICEID_ST201_2, "Sundance ST201 10/100BaseTX" },
90 { DL_VENDORID, DL_DEVICEID_DL10050, "D-Link DL10050 10/100BaseTX" },
94 static int ste_probe(device_t);
95 static int ste_attach(device_t);
96 static int ste_detach(device_t);
97 static void ste_init(void *);
98 static void ste_init_locked(struct ste_softc *);
99 static void ste_intr(void *);
100 static void ste_rxeoc(struct ste_softc *);
101 static int ste_rxeof(struct ste_softc *);
102 static void ste_txeoc(struct ste_softc *);
103 static void ste_txeof(struct ste_softc *);
104 static void ste_stats_update(void *);
105 static void ste_stop(struct ste_softc *);
106 static void ste_reset(struct ste_softc *);
107 static int ste_ioctl(struct ifnet *, u_long, caddr_t);
108 static int ste_encap(struct ste_softc *, struct ste_chain *, struct mbuf *);
109 static void ste_start(struct ifnet *);
110 static void ste_start_locked(struct ifnet *);
111 static void ste_watchdog(struct ifnet *);
112 static int ste_shutdown(device_t);
113 static int ste_newbuf(struct ste_softc *, struct ste_chain_onefrag *,
115 static int ste_ifmedia_upd(struct ifnet *);
116 static void ste_ifmedia_upd_locked(struct ifnet *);
117 static void ste_ifmedia_sts(struct ifnet *, struct ifmediareq *);
119 static void ste_mii_sync(struct ste_softc *);
120 static void ste_mii_send(struct ste_softc *, u_int32_t, int);
121 static int ste_mii_readreg(struct ste_softc *, struct ste_mii_frame *);
122 static int ste_mii_writereg(struct ste_softc *, struct ste_mii_frame *);
123 static int ste_miibus_readreg(device_t, int, int);
124 static int ste_miibus_writereg(device_t, int, int, int);
125 static void ste_miibus_statchg(device_t);
127 static int ste_eeprom_wait(struct ste_softc *);
128 static int ste_read_eeprom(struct ste_softc *, caddr_t, int, int, int);
129 static void ste_wait(struct ste_softc *);
130 static void ste_setmulti(struct ste_softc *);
131 static int ste_init_rx_list(struct ste_softc *);
132 static void ste_init_tx_list(struct ste_softc *);
134 #ifdef STE_USEIOSPACE
135 #define STE_RES SYS_RES_IOPORT
136 #define STE_RID STE_PCI_LOIO
138 #define STE_RES SYS_RES_MEMORY
139 #define STE_RID STE_PCI_LOMEM
142 static device_method_t ste_methods[] = {
143 /* Device interface */
144 DEVMETHOD(device_probe, ste_probe),
145 DEVMETHOD(device_attach, ste_attach),
146 DEVMETHOD(device_detach, ste_detach),
147 DEVMETHOD(device_shutdown, ste_shutdown),
150 DEVMETHOD(bus_print_child, bus_generic_print_child),
151 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
154 DEVMETHOD(miibus_readreg, ste_miibus_readreg),
155 DEVMETHOD(miibus_writereg, ste_miibus_writereg),
156 DEVMETHOD(miibus_statchg, ste_miibus_statchg),
161 static driver_t ste_driver = {
164 sizeof(struct ste_softc)
167 static devclass_t ste_devclass;
169 DRIVER_MODULE(ste, pci, ste_driver, ste_devclass, 0, 0);
170 DRIVER_MODULE(miibus, ste, miibus_driver, miibus_devclass, 0, 0);
172 SYSCTL_NODE(_hw, OID_AUTO, ste, CTLFLAG_RD, 0, "if_ste parameters");
174 static int ste_rxsyncs;
175 SYSCTL_INT(_hw_ste, OID_AUTO, rxsyncs, CTLFLAG_RW, &ste_rxsyncs, 0, "");
177 #define STE_SETBIT4(sc, reg, x) \
178 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
180 #define STE_CLRBIT4(sc, reg, x) \
181 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
183 #define STE_SETBIT2(sc, reg, x) \
184 CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) | (x))
186 #define STE_CLRBIT2(sc, reg, x) \
187 CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) & ~(x))
189 #define STE_SETBIT1(sc, reg, x) \
190 CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) | (x))
192 #define STE_CLRBIT1(sc, reg, x) \
193 CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) & ~(x))
196 #define MII_SET(x) STE_SETBIT1(sc, STE_PHYCTL, x)
197 #define MII_CLR(x) STE_CLRBIT1(sc, STE_PHYCTL, x)
200 * Sync the PHYs by setting data bit and strobing the clock 32 times.
204 struct ste_softc *sc;
208 MII_SET(STE_PHYCTL_MDIR|STE_PHYCTL_MDATA);
210 for (i = 0; i < 32; i++) {
211 MII_SET(STE_PHYCTL_MCLK);
213 MII_CLR(STE_PHYCTL_MCLK);
221 * Clock a series of bits through the MII.
224 ste_mii_send(sc, bits, cnt)
225 struct ste_softc *sc;
231 MII_CLR(STE_PHYCTL_MCLK);
233 for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
235 MII_SET(STE_PHYCTL_MDATA);
237 MII_CLR(STE_PHYCTL_MDATA);
240 MII_CLR(STE_PHYCTL_MCLK);
242 MII_SET(STE_PHYCTL_MCLK);
247 * Read an PHY register through the MII.
250 ste_mii_readreg(sc, frame)
251 struct ste_softc *sc;
252 struct ste_mii_frame *frame;
258 * Set up frame for RX.
260 frame->mii_stdelim = STE_MII_STARTDELIM;
261 frame->mii_opcode = STE_MII_READOP;
262 frame->mii_turnaround = 0;
265 CSR_WRITE_2(sc, STE_PHYCTL, 0);
269 MII_SET(STE_PHYCTL_MDIR);
274 * Send command/address info.
276 ste_mii_send(sc, frame->mii_stdelim, 2);
277 ste_mii_send(sc, frame->mii_opcode, 2);
278 ste_mii_send(sc, frame->mii_phyaddr, 5);
279 ste_mii_send(sc, frame->mii_regaddr, 5);
282 MII_CLR(STE_PHYCTL_MDIR);
285 MII_CLR((STE_PHYCTL_MCLK|STE_PHYCTL_MDATA));
287 MII_SET(STE_PHYCTL_MCLK);
291 MII_CLR(STE_PHYCTL_MCLK);
293 ack = CSR_READ_2(sc, STE_PHYCTL) & STE_PHYCTL_MDATA;
294 MII_SET(STE_PHYCTL_MCLK);
298 * Now try reading data bits. If the ack failed, we still
299 * need to clock through 16 cycles to keep the PHY(s) in sync.
302 for(i = 0; i < 16; i++) {
303 MII_CLR(STE_PHYCTL_MCLK);
305 MII_SET(STE_PHYCTL_MCLK);
311 for (i = 0x8000; i; i >>= 1) {
312 MII_CLR(STE_PHYCTL_MCLK);
315 if (CSR_READ_2(sc, STE_PHYCTL) & STE_PHYCTL_MDATA)
316 frame->mii_data |= i;
319 MII_SET(STE_PHYCTL_MCLK);
325 MII_CLR(STE_PHYCTL_MCLK);
327 MII_SET(STE_PHYCTL_MCLK);
336 * Write to a PHY register through the MII.
339 ste_mii_writereg(sc, frame)
340 struct ste_softc *sc;
341 struct ste_mii_frame *frame;
346 * Set up frame for TX.
349 frame->mii_stdelim = STE_MII_STARTDELIM;
350 frame->mii_opcode = STE_MII_WRITEOP;
351 frame->mii_turnaround = STE_MII_TURNAROUND;
354 * Turn on data output.
356 MII_SET(STE_PHYCTL_MDIR);
360 ste_mii_send(sc, frame->mii_stdelim, 2);
361 ste_mii_send(sc, frame->mii_opcode, 2);
362 ste_mii_send(sc, frame->mii_phyaddr, 5);
363 ste_mii_send(sc, frame->mii_regaddr, 5);
364 ste_mii_send(sc, frame->mii_turnaround, 2);
365 ste_mii_send(sc, frame->mii_data, 16);
368 MII_SET(STE_PHYCTL_MCLK);
370 MII_CLR(STE_PHYCTL_MCLK);
376 MII_CLR(STE_PHYCTL_MDIR);
382 ste_miibus_readreg(dev, phy, reg)
386 struct ste_softc *sc;
387 struct ste_mii_frame frame;
389 sc = device_get_softc(dev);
391 if ( sc->ste_one_phy && phy != 0 )
394 bzero((char *)&frame, sizeof(frame));
396 frame.mii_phyaddr = phy;
397 frame.mii_regaddr = reg;
398 ste_mii_readreg(sc, &frame);
400 return(frame.mii_data);
404 ste_miibus_writereg(dev, phy, reg, data)
408 struct ste_softc *sc;
409 struct ste_mii_frame frame;
411 sc = device_get_softc(dev);
412 bzero((char *)&frame, sizeof(frame));
414 frame.mii_phyaddr = phy;
415 frame.mii_regaddr = reg;
416 frame.mii_data = data;
418 ste_mii_writereg(sc, &frame);
424 ste_miibus_statchg(dev)
427 struct ste_softc *sc;
428 struct mii_data *mii;
430 sc = device_get_softc(dev);
432 mii = device_get_softc(sc->ste_miibus);
434 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
435 STE_SETBIT2(sc, STE_MACCTL0, STE_MACCTL0_FULLDUPLEX);
437 STE_CLRBIT2(sc, STE_MACCTL0, STE_MACCTL0_FULLDUPLEX);
447 struct ste_softc *sc;
451 ste_ifmedia_upd_locked(ifp);
458 ste_ifmedia_upd_locked(ifp)
461 struct ste_softc *sc;
462 struct mii_data *mii;
466 mii = device_get_softc(sc->ste_miibus);
468 if (mii->mii_instance) {
469 struct mii_softc *miisc;
470 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
471 mii_phy_reset(miisc);
477 ste_ifmedia_sts(ifp, ifmr)
479 struct ifmediareq *ifmr;
481 struct ste_softc *sc;
482 struct mii_data *mii;
485 mii = device_get_softc(sc->ste_miibus);
489 ifmr->ifm_active = mii->mii_media_active;
490 ifmr->ifm_status = mii->mii_media_status;
498 struct ste_softc *sc;
502 for (i = 0; i < STE_TIMEOUT; i++) {
503 if (!(CSR_READ_4(sc, STE_DMACTL) & STE_DMACTL_DMA_HALTINPROG))
507 if (i == STE_TIMEOUT)
508 device_printf(sc->ste_dev, "command never completed!\n");
514 * The EEPROM is slow: give it time to come ready after issuing
519 struct ste_softc *sc;
525 for (i = 0; i < 100; i++) {
526 if (CSR_READ_2(sc, STE_EEPROM_CTL) & STE_EECTL_BUSY)
533 device_printf(sc->ste_dev, "eeprom failed to come ready\n");
541 * Read a sequence of words from the EEPROM. Note that ethernet address
542 * data is stored in the EEPROM in network byte order.
545 ste_read_eeprom(sc, dest, off, cnt, swap)
546 struct ste_softc *sc;
553 u_int16_t word = 0, *ptr;
555 if (ste_eeprom_wait(sc))
558 for (i = 0; i < cnt; i++) {
559 CSR_WRITE_2(sc, STE_EEPROM_CTL, STE_EEOPCODE_READ | (off + i));
560 err = ste_eeprom_wait(sc);
563 word = CSR_READ_2(sc, STE_EEPROM_DATA);
564 ptr = (u_int16_t *)(dest + (i * 2));
576 struct ste_softc *sc;
580 u_int32_t hashes[2] = { 0, 0 };
581 struct ifmultiaddr *ifma;
584 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
585 STE_SETBIT1(sc, STE_RX_MODE, STE_RXMODE_ALLMULTI);
586 STE_CLRBIT1(sc, STE_RX_MODE, STE_RXMODE_MULTIHASH);
590 /* first, zot all the existing hash bits */
591 CSR_WRITE_2(sc, STE_MAR0, 0);
592 CSR_WRITE_2(sc, STE_MAR1, 0);
593 CSR_WRITE_2(sc, STE_MAR2, 0);
594 CSR_WRITE_2(sc, STE_MAR3, 0);
596 /* now program new ones */
598 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
599 if (ifma->ifma_addr->sa_family != AF_LINK)
601 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
602 ifma->ifma_addr), ETHER_ADDR_LEN) & 0x3F;
604 hashes[0] |= (1 << h);
606 hashes[1] |= (1 << (h - 32));
608 if_maddr_runlock(ifp);
610 CSR_WRITE_2(sc, STE_MAR0, hashes[0] & 0xFFFF);
611 CSR_WRITE_2(sc, STE_MAR1, (hashes[0] >> 16) & 0xFFFF);
612 CSR_WRITE_2(sc, STE_MAR2, hashes[1] & 0xFFFF);
613 CSR_WRITE_2(sc, STE_MAR3, (hashes[1] >> 16) & 0xFFFF);
614 STE_CLRBIT1(sc, STE_RX_MODE, STE_RXMODE_ALLMULTI);
615 STE_SETBIT1(sc, STE_RX_MODE, STE_RXMODE_MULTIHASH);
620 #ifdef DEVICE_POLLING
621 static poll_handler_t ste_poll, ste_poll_locked;
624 ste_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
626 struct ste_softc *sc = ifp->if_softc;
630 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
631 rx_npkts = ste_poll_locked(ifp, cmd, count);
637 ste_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
639 struct ste_softc *sc = ifp->if_softc;
644 sc->rxcycles = count;
645 if (cmd == POLL_AND_CHECK_STATUS)
647 rx_npkts = ste_rxeof(sc);
649 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
650 ste_start_locked(ifp);
652 if (cmd == POLL_AND_CHECK_STATUS) {
655 status = CSR_READ_2(sc, STE_ISR_ACK);
657 if (status & STE_ISR_TX_DONE)
660 if (status & STE_ISR_STATS_OFLOW) {
661 callout_stop(&sc->ste_stat_callout);
662 ste_stats_update(sc);
665 if (status & STE_ISR_LINKEVENT)
666 mii_pollstat(device_get_softc(sc->ste_miibus));
668 if (status & STE_ISR_HOSTERR) {
675 #endif /* DEVICE_POLLING */
681 struct ste_softc *sc;
689 #ifdef DEVICE_POLLING
690 if (ifp->if_capenable & IFCAP_POLLING) {
696 /* See if this is really our interrupt. */
697 if (!(CSR_READ_2(sc, STE_ISR) & STE_ISR_INTLATCH)) {
703 status = CSR_READ_2(sc, STE_ISR_ACK);
705 if (!(status & STE_INTRS))
708 if (status & STE_ISR_RX_DMADONE) {
713 if (status & STE_ISR_TX_DMADONE)
716 if (status & STE_ISR_TX_DONE)
719 if (status & STE_ISR_STATS_OFLOW) {
720 callout_stop(&sc->ste_stat_callout);
721 ste_stats_update(sc);
724 if (status & STE_ISR_LINKEVENT)
725 mii_pollstat(device_get_softc(sc->ste_miibus));
728 if (status & STE_ISR_HOSTERR) {
734 /* Re-enable interrupts */
735 CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
737 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
738 ste_start_locked(ifp);
746 ste_rxeoc(struct ste_softc *sc)
748 struct ste_chain_onefrag *cur_rx;
752 if (sc->ste_cdata.ste_rx_head->ste_ptr->ste_status == 0) {
753 cur_rx = sc->ste_cdata.ste_rx_head;
755 cur_rx = cur_rx->ste_next;
756 /* If the ring is empty, just return. */
757 if (cur_rx == sc->ste_cdata.ste_rx_head)
759 } while (cur_rx->ste_ptr->ste_status == 0);
760 if (sc->ste_cdata.ste_rx_head->ste_ptr->ste_status == 0) {
761 /* We've fallen behind the chip: catch it. */
762 sc->ste_cdata.ste_rx_head = cur_rx;
769 * A frame has been uploaded: pass the resulting mbuf chain up to
770 * the higher level protocols.
774 struct ste_softc *sc;
778 struct ste_chain_onefrag *cur_rx;
779 int total_len = 0, count=0, rx_npkts = 0;
786 while((rxstat = sc->ste_cdata.ste_rx_head->ste_ptr->ste_status)
787 & STE_RXSTAT_DMADONE) {
788 #ifdef DEVICE_POLLING
789 if (ifp->if_capenable & IFCAP_POLLING) {
790 if (sc->rxcycles <= 0)
795 if ((STE_RX_LIST_CNT - count) < 3) {
799 cur_rx = sc->ste_cdata.ste_rx_head;
800 sc->ste_cdata.ste_rx_head = cur_rx->ste_next;
803 * If an error occurs, update stats, clear the
804 * status word and leave the mbuf cluster in place:
805 * it should simply get re-used next time this descriptor
806 * comes up in the ring.
808 if (rxstat & STE_RXSTAT_FRAME_ERR) {
810 cur_rx->ste_ptr->ste_status = 0;
815 * If there error bit was not set, the upload complete
816 * bit should be set which means we have a valid packet.
817 * If not, something truly strange has happened.
819 if (!(rxstat & STE_RXSTAT_DMADONE)) {
820 device_printf(sc->ste_dev,
821 "bad receive status -- packet dropped\n");
823 cur_rx->ste_ptr->ste_status = 0;
827 /* No errors; receive the packet. */
828 m = cur_rx->ste_mbuf;
829 total_len = cur_rx->ste_ptr->ste_status & STE_RXSTAT_FRAMELEN;
832 * Try to conjure up a new mbuf cluster. If that
833 * fails, it means we have an out of memory condition and
834 * should leave the buffer in place and continue. This will
835 * result in a lost packet, but there's little else we
836 * can do in this situation.
838 if (ste_newbuf(sc, cur_rx, NULL) == ENOBUFS) {
840 cur_rx->ste_ptr->ste_status = 0;
844 m->m_pkthdr.rcvif = ifp;
845 m->m_pkthdr.len = m->m_len = total_len;
849 (*ifp->if_input)(ifp, m);
852 cur_rx->ste_ptr->ste_status = 0;
862 struct ste_softc *sc;
869 while ((txstat = CSR_READ_1(sc, STE_TX_STATUS)) &
870 STE_TXSTATUS_TXDONE) {
871 if (txstat & STE_TXSTATUS_UNDERRUN ||
872 txstat & STE_TXSTATUS_EXCESSCOLLS ||
873 txstat & STE_TXSTATUS_RECLAIMERR) {
875 device_printf(sc->ste_dev,
876 "transmission error: %x\n", txstat);
881 if (txstat & STE_TXSTATUS_UNDERRUN &&
882 sc->ste_tx_thresh < STE_PACKET_SIZE) {
883 sc->ste_tx_thresh += STE_MIN_FRAMELEN;
884 device_printf(sc->ste_dev,
885 "tx underrun, increasing tx"
886 " start threshold to %d bytes\n",
889 CSR_WRITE_2(sc, STE_TX_STARTTHRESH, sc->ste_tx_thresh);
890 CSR_WRITE_2(sc, STE_TX_RECLAIM_THRESH,
891 (STE_PACKET_SIZE >> 4));
894 CSR_WRITE_2(sc, STE_TX_STATUS, txstat);
902 struct ste_softc *sc;
904 struct ste_chain *cur_tx;
910 idx = sc->ste_cdata.ste_tx_cons;
911 while(idx != sc->ste_cdata.ste_tx_prod) {
912 cur_tx = &sc->ste_cdata.ste_tx_chain[idx];
914 if (!(cur_tx->ste_ptr->ste_ctl & STE_TXCTL_DMADONE))
917 m_freem(cur_tx->ste_mbuf);
918 cur_tx->ste_mbuf = NULL;
919 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
922 STE_INC(idx, STE_TX_LIST_CNT);
925 sc->ste_cdata.ste_tx_cons = idx;
926 if (idx == sc->ste_cdata.ste_tx_prod)
931 ste_stats_update(xsc)
934 struct ste_softc *sc;
936 struct mii_data *mii;
942 mii = device_get_softc(sc->ste_miibus);
944 ifp->if_collisions += CSR_READ_1(sc, STE_LATE_COLLS)
945 + CSR_READ_1(sc, STE_MULTI_COLLS)
946 + CSR_READ_1(sc, STE_SINGLE_COLLS);
950 if (mii->mii_media_status & IFM_ACTIVE &&
951 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
954 * we don't get a call-back on re-init so do it
955 * otherwise we get stuck in the wrong link state
957 ste_miibus_statchg(sc->ste_dev);
958 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
959 ste_start_locked(ifp);
963 callout_reset(&sc->ste_stat_callout, hz, ste_stats_update, sc);
970 * Probe for a Sundance ST201 chip. Check the PCI vendor and device
971 * IDs against our list and return a device name if we find a match.
981 while(t->ste_name != NULL) {
982 if ((pci_get_vendor(dev) == t->ste_vid) &&
983 (pci_get_device(dev) == t->ste_did)) {
984 device_set_desc(dev, t->ste_name);
985 return (BUS_PROBE_DEFAULT);
994 * Attach the interface. Allocate softc structures, do ifmedia
995 * setup and ethernet/BPF attach.
1001 struct ste_softc *sc;
1006 sc = device_get_softc(dev);
1010 * Only use one PHY since this chip reports multiple
1011 * Note on the DFE-550 the PHY is at 1 on the DFE-580
1012 * it is at 0 & 1. It is rev 0x12.
1014 if (pci_get_vendor(dev) == DL_VENDORID &&
1015 pci_get_device(dev) == DL_DEVICEID_DL10050 &&
1016 pci_get_revid(dev) == 0x12 )
1017 sc->ste_one_phy = 1;
1019 mtx_init(&sc->ste_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
1022 * Map control/status registers.
1024 pci_enable_busmaster(dev);
1027 sc->ste_res = bus_alloc_resource_any(dev, STE_RES, &rid, RF_ACTIVE);
1029 if (sc->ste_res == NULL) {
1030 device_printf(dev, "couldn't map ports/memory\n");
1035 sc->ste_btag = rman_get_bustag(sc->ste_res);
1036 sc->ste_bhandle = rman_get_bushandle(sc->ste_res);
1038 /* Allocate interrupt */
1040 sc->ste_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1041 RF_SHAREABLE | RF_ACTIVE);
1043 if (sc->ste_irq == NULL) {
1044 device_printf(dev, "couldn't map interrupt\n");
1049 callout_init_mtx(&sc->ste_stat_callout, &sc->ste_mtx, 0);
1051 /* Reset the adapter. */
1055 * Get station address from the EEPROM.
1057 if (ste_read_eeprom(sc, eaddr,
1058 STE_EEADDR_NODE0, 3, 0)) {
1059 device_printf(dev, "failed to read station address\n");
1064 /* Allocate the descriptor queues. */
1065 sc->ste_ldata = contigmalloc(sizeof(struct ste_list_data), M_DEVBUF,
1066 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
1068 if (sc->ste_ldata == NULL) {
1069 device_printf(dev, "no memory for list buffers!\n");
1074 bzero(sc->ste_ldata, sizeof(struct ste_list_data));
1076 ifp = sc->ste_ifp = if_alloc(IFT_ETHER);
1078 device_printf(dev, "can not if_alloc()\n");
1084 if (mii_phy_probe(dev, &sc->ste_miibus,
1085 ste_ifmedia_upd, ste_ifmedia_sts)) {
1086 device_printf(dev, "MII without any phy!\n");
1092 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1093 ifp->if_mtu = ETHERMTU;
1094 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1095 ifp->if_ioctl = ste_ioctl;
1096 ifp->if_start = ste_start;
1097 ifp->if_watchdog = ste_watchdog;
1098 ifp->if_init = ste_init;
1099 IFQ_SET_MAXLEN(&ifp->if_snd, STE_TX_LIST_CNT - 1);
1100 ifp->if_snd.ifq_drv_maxlen = STE_TX_LIST_CNT - 1;
1101 IFQ_SET_READY(&ifp->if_snd);
1103 sc->ste_tx_thresh = STE_TXSTART_THRESH;
1106 * Call MI attach routine.
1108 ether_ifattach(ifp, eaddr);
1111 * Tell the upper layer(s) we support long frames.
1113 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1114 ifp->if_capabilities |= IFCAP_VLAN_MTU;
1115 ifp->if_capenable = ifp->if_capabilities;
1116 #ifdef DEVICE_POLLING
1117 ifp->if_capabilities |= IFCAP_POLLING;
1120 /* Hook interrupt last to avoid having to lock softc */
1121 error = bus_setup_intr(dev, sc->ste_irq, INTR_TYPE_NET | INTR_MPSAFE,
1122 NULL, ste_intr, sc, &sc->ste_intrhand);
1125 device_printf(dev, "couldn't set up irq\n");
1126 ether_ifdetach(ifp);
1138 * Shutdown hardware and free up resources. This can be called any
1139 * time after the mutex has been initialized. It is called in both
1140 * the error case in attach and the normal detach case so it needs
1141 * to be careful about only freeing resources that have actually been
1148 struct ste_softc *sc;
1151 sc = device_get_softc(dev);
1152 KASSERT(mtx_initialized(&sc->ste_mtx), ("ste mutex not initialized"));
1155 #ifdef DEVICE_POLLING
1156 if (ifp->if_capenable & IFCAP_POLLING)
1157 ether_poll_deregister(ifp);
1160 /* These should only be active if attach succeeded */
1161 if (device_is_attached(dev)) {
1165 callout_drain(&sc->ste_stat_callout);
1166 ether_ifdetach(ifp);
1169 device_delete_child(dev, sc->ste_miibus);
1170 bus_generic_detach(dev);
1172 if (sc->ste_intrhand)
1173 bus_teardown_intr(dev, sc->ste_irq, sc->ste_intrhand);
1175 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->ste_irq);
1177 bus_release_resource(dev, STE_RES, STE_RID, sc->ste_res);
1182 if (sc->ste_ldata) {
1183 contigfree(sc->ste_ldata, sizeof(struct ste_list_data),
1187 mtx_destroy(&sc->ste_mtx);
1193 ste_newbuf(sc, c, m)
1194 struct ste_softc *sc;
1195 struct ste_chain_onefrag *c;
1198 struct mbuf *m_new = NULL;
1201 MGETHDR(m_new, M_DONTWAIT, MT_DATA);
1204 MCLGET(m_new, M_DONTWAIT);
1205 if (!(m_new->m_flags & M_EXT)) {
1209 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
1212 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
1213 m_new->m_data = m_new->m_ext.ext_buf;
1216 m_adj(m_new, ETHER_ALIGN);
1218 c->ste_mbuf = m_new;
1219 c->ste_ptr->ste_status = 0;
1220 c->ste_ptr->ste_frag.ste_addr = vtophys(mtod(m_new, caddr_t));
1221 c->ste_ptr->ste_frag.ste_len = (1536 + ETHER_VLAN_ENCAP_LEN) | STE_FRAG_LAST;
1227 ste_init_rx_list(sc)
1228 struct ste_softc *sc;
1230 struct ste_chain_data *cd;
1231 struct ste_list_data *ld;
1234 cd = &sc->ste_cdata;
1237 for (i = 0; i < STE_RX_LIST_CNT; i++) {
1238 cd->ste_rx_chain[i].ste_ptr = &ld->ste_rx_list[i];
1239 if (ste_newbuf(sc, &cd->ste_rx_chain[i], NULL) == ENOBUFS)
1241 if (i == (STE_RX_LIST_CNT - 1)) {
1242 cd->ste_rx_chain[i].ste_next =
1243 &cd->ste_rx_chain[0];
1244 ld->ste_rx_list[i].ste_next =
1245 vtophys(&ld->ste_rx_list[0]);
1247 cd->ste_rx_chain[i].ste_next =
1248 &cd->ste_rx_chain[i + 1];
1249 ld->ste_rx_list[i].ste_next =
1250 vtophys(&ld->ste_rx_list[i + 1]);
1252 ld->ste_rx_list[i].ste_status = 0;
1255 cd->ste_rx_head = &cd->ste_rx_chain[0];
1261 ste_init_tx_list(sc)
1262 struct ste_softc *sc;
1264 struct ste_chain_data *cd;
1265 struct ste_list_data *ld;
1268 cd = &sc->ste_cdata;
1270 for (i = 0; i < STE_TX_LIST_CNT; i++) {
1271 cd->ste_tx_chain[i].ste_ptr = &ld->ste_tx_list[i];
1272 cd->ste_tx_chain[i].ste_ptr->ste_next = 0;
1273 cd->ste_tx_chain[i].ste_ptr->ste_ctl = 0;
1274 cd->ste_tx_chain[i].ste_phys = vtophys(&ld->ste_tx_list[i]);
1275 if (i == (STE_TX_LIST_CNT - 1))
1276 cd->ste_tx_chain[i].ste_next =
1277 &cd->ste_tx_chain[0];
1279 cd->ste_tx_chain[i].ste_next =
1280 &cd->ste_tx_chain[i + 1];
1283 cd->ste_tx_prod = 0;
1284 cd->ste_tx_cons = 0;
1293 struct ste_softc *sc;
1297 ste_init_locked(sc);
1303 struct ste_softc *sc;
1308 STE_LOCK_ASSERT(sc);
1313 /* Init our MAC address */
1314 for (i = 0; i < ETHER_ADDR_LEN; i += 2) {
1315 CSR_WRITE_2(sc, STE_PAR0 + i,
1316 ((IF_LLADDR(sc->ste_ifp)[i] & 0xff) |
1317 IF_LLADDR(sc->ste_ifp)[i + 1] << 8));
1321 if (ste_init_rx_list(sc) == ENOBUFS) {
1322 device_printf(sc->ste_dev,
1323 "initialization failed: no memory for RX buffers\n");
1328 /* Set RX polling interval */
1329 CSR_WRITE_1(sc, STE_RX_DMAPOLL_PERIOD, 64);
1331 /* Init TX descriptors */
1332 ste_init_tx_list(sc);
1334 /* Set the TX freethresh value */
1335 CSR_WRITE_1(sc, STE_TX_DMABURST_THRESH, STE_PACKET_SIZE >> 8);
1337 /* Set the TX start threshold for best performance. */
1338 CSR_WRITE_2(sc, STE_TX_STARTTHRESH, sc->ste_tx_thresh);
1340 /* Set the TX reclaim threshold. */
1341 CSR_WRITE_1(sc, STE_TX_RECLAIM_THRESH, (STE_PACKET_SIZE >> 4));
1343 /* Set up the RX filter. */
1344 CSR_WRITE_1(sc, STE_RX_MODE, STE_RXMODE_UNICAST);
1346 /* If we want promiscuous mode, set the allframes bit. */
1347 if (ifp->if_flags & IFF_PROMISC) {
1348 STE_SETBIT1(sc, STE_RX_MODE, STE_RXMODE_PROMISC);
1350 STE_CLRBIT1(sc, STE_RX_MODE, STE_RXMODE_PROMISC);
1353 /* Set capture broadcast bit to accept broadcast frames. */
1354 if (ifp->if_flags & IFF_BROADCAST) {
1355 STE_SETBIT1(sc, STE_RX_MODE, STE_RXMODE_BROADCAST);
1357 STE_CLRBIT1(sc, STE_RX_MODE, STE_RXMODE_BROADCAST);
1362 /* Load the address of the RX list. */
1363 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_STALL);
1365 CSR_WRITE_4(sc, STE_RX_DMALIST_PTR,
1366 vtophys(&sc->ste_ldata->ste_rx_list[0]));
1367 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_UNSTALL);
1368 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_UNSTALL);
1370 /* Set TX polling interval (defer until we TX first packet */
1371 CSR_WRITE_1(sc, STE_TX_DMAPOLL_PERIOD, 0);
1373 /* Load address of the TX list */
1374 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
1376 CSR_WRITE_4(sc, STE_TX_DMALIST_PTR, 0);
1377 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
1378 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
1380 sc->ste_tx_prev = NULL;
1382 /* Enable receiver and transmitter */
1383 CSR_WRITE_2(sc, STE_MACCTL0, 0);
1384 CSR_WRITE_2(sc, STE_MACCTL1, 0);
1385 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_TX_ENABLE);
1386 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_RX_ENABLE);
1388 /* Enable stats counters. */
1389 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_STATS_ENABLE);
1391 CSR_WRITE_2(sc, STE_ISR, 0xFFFF);
1392 #ifdef DEVICE_POLLING
1393 /* Disable interrupts if we are polling. */
1394 if (ifp->if_capenable & IFCAP_POLLING)
1395 CSR_WRITE_2(sc, STE_IMR, 0);
1398 /* Enable interrupts. */
1399 CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
1401 /* Accept VLAN length packets */
1402 CSR_WRITE_2(sc, STE_MAX_FRAMELEN, ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN);
1404 ste_ifmedia_upd_locked(ifp);
1406 ifp->if_drv_flags |= IFF_DRV_RUNNING;
1407 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1409 callout_reset(&sc->ste_stat_callout, hz, ste_stats_update, sc);
1416 struct ste_softc *sc;
1421 STE_LOCK_ASSERT(sc);
1424 callout_stop(&sc->ste_stat_callout);
1425 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING|IFF_DRV_OACTIVE);
1427 CSR_WRITE_2(sc, STE_IMR, 0);
1428 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_TX_DISABLE);
1429 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_RX_DISABLE);
1430 STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_STATS_DISABLE);
1431 STE_SETBIT2(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
1432 STE_SETBIT2(sc, STE_DMACTL, STE_DMACTL_RXDMA_STALL);
1435 * Try really hard to stop the RX engine or under heavy RX
1436 * data chip will write into de-allocated memory.
1442 for (i = 0; i < STE_RX_LIST_CNT; i++) {
1443 if (sc->ste_cdata.ste_rx_chain[i].ste_mbuf != NULL) {
1444 m_freem(sc->ste_cdata.ste_rx_chain[i].ste_mbuf);
1445 sc->ste_cdata.ste_rx_chain[i].ste_mbuf = NULL;
1449 for (i = 0; i < STE_TX_LIST_CNT; i++) {
1450 if (sc->ste_cdata.ste_tx_chain[i].ste_mbuf != NULL) {
1451 m_freem(sc->ste_cdata.ste_tx_chain[i].ste_mbuf);
1452 sc->ste_cdata.ste_tx_chain[i].ste_mbuf = NULL;
1456 bzero(sc->ste_ldata, sizeof(struct ste_list_data));
1463 struct ste_softc *sc;
1467 STE_SETBIT4(sc, STE_ASICCTL,
1468 STE_ASICCTL_GLOBAL_RESET|STE_ASICCTL_RX_RESET|
1469 STE_ASICCTL_TX_RESET|STE_ASICCTL_DMA_RESET|
1470 STE_ASICCTL_FIFO_RESET|STE_ASICCTL_NETWORK_RESET|
1471 STE_ASICCTL_AUTOINIT_RESET|STE_ASICCTL_HOST_RESET|
1472 STE_ASICCTL_EXTRESET_RESET);
1476 for (i = 0; i < STE_TIMEOUT; i++) {
1477 if (!(CSR_READ_4(sc, STE_ASICCTL) & STE_ASICCTL_RESET_BUSY))
1481 if (i == STE_TIMEOUT)
1482 device_printf(sc->ste_dev, "global reset never completed\n");
1488 ste_ioctl(ifp, command, data)
1493 struct ste_softc *sc;
1495 struct mii_data *mii;
1499 ifr = (struct ifreq *)data;
1504 if (ifp->if_flags & IFF_UP) {
1505 if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
1506 ifp->if_flags & IFF_PROMISC &&
1507 !(sc->ste_if_flags & IFF_PROMISC)) {
1508 STE_SETBIT1(sc, STE_RX_MODE,
1509 STE_RXMODE_PROMISC);
1510 } else if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
1511 !(ifp->if_flags & IFF_PROMISC) &&
1512 sc->ste_if_flags & IFF_PROMISC) {
1513 STE_CLRBIT1(sc, STE_RX_MODE,
1514 STE_RXMODE_PROMISC);
1516 if (ifp->if_drv_flags & IFF_DRV_RUNNING &&
1517 (ifp->if_flags ^ sc->ste_if_flags) & IFF_ALLMULTI)
1519 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1520 sc->ste_tx_thresh = STE_TXSTART_THRESH;
1521 ste_init_locked(sc);
1524 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1527 sc->ste_if_flags = ifp->if_flags;
1540 mii = device_get_softc(sc->ste_miibus);
1541 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
1544 #ifdef DEVICE_POLLING
1545 if (ifr->ifr_reqcap & IFCAP_POLLING &&
1546 !(ifp->if_capenable & IFCAP_POLLING)) {
1547 error = ether_poll_register(ste_poll, ifp);
1551 /* Disable interrupts */
1552 CSR_WRITE_2(sc, STE_IMR, 0);
1553 ifp->if_capenable |= IFCAP_POLLING;
1558 if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
1559 ifp->if_capenable & IFCAP_POLLING) {
1560 error = ether_poll_deregister(ifp);
1561 /* Enable interrupts. */
1563 CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
1564 ifp->if_capenable &= ~IFCAP_POLLING;
1568 #endif /* DEVICE_POLLING */
1571 error = ether_ioctl(ifp, command, data);
1579 ste_encap(sc, c, m_head)
1580 struct ste_softc *sc;
1581 struct ste_chain *c;
1582 struct mbuf *m_head;
1585 struct ste_frag *f = NULL;
1593 for (m = m_head, frag = 0; m != NULL; m = m->m_next) {
1594 if (m->m_len != 0) {
1595 if (frag == STE_MAXFRAGS)
1597 f = &d->ste_frags[frag];
1598 f->ste_addr = vtophys(mtod(m, vm_offset_t));
1599 f->ste_len = m->m_len;
1608 * We ran out of segments. We have to recopy this
1609 * mbuf chain first. Bail out if we can't get the
1612 mn = m_defrag(m_head, M_DONTWAIT);
1621 c->ste_mbuf = m_head;
1622 d->ste_frags[frag - 1].ste_len |= STE_FRAG_LAST;
1632 struct ste_softc *sc;
1636 ste_start_locked(ifp);
1641 ste_start_locked(ifp)
1644 struct ste_softc *sc;
1645 struct mbuf *m_head = NULL;
1646 struct ste_chain *cur_tx;
1650 STE_LOCK_ASSERT(sc);
1655 if (ifp->if_drv_flags & IFF_DRV_OACTIVE)
1658 idx = sc->ste_cdata.ste_tx_prod;
1660 while(sc->ste_cdata.ste_tx_chain[idx].ste_mbuf == NULL) {
1662 * We cannot re-use the last (free) descriptor;
1663 * the chip may not have read its ste_next yet.
1665 if (STE_NEXT(idx, STE_TX_LIST_CNT) ==
1666 sc->ste_cdata.ste_tx_cons) {
1667 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1671 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
1675 cur_tx = &sc->ste_cdata.ste_tx_chain[idx];
1677 if (ste_encap(sc, cur_tx, m_head) != 0)
1680 cur_tx->ste_ptr->ste_next = 0;
1682 if (sc->ste_tx_prev == NULL) {
1683 cur_tx->ste_ptr->ste_ctl = STE_TXCTL_DMAINTR | 1;
1684 /* Load address of the TX list */
1685 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
1688 CSR_WRITE_4(sc, STE_TX_DMALIST_PTR,
1689 vtophys(&sc->ste_ldata->ste_tx_list[0]));
1691 /* Set TX polling interval to start TX engine */
1692 CSR_WRITE_1(sc, STE_TX_DMAPOLL_PERIOD, 64);
1694 STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
1697 cur_tx->ste_ptr->ste_ctl = STE_TXCTL_DMAINTR | 1;
1698 sc->ste_tx_prev->ste_ptr->ste_next
1702 sc->ste_tx_prev = cur_tx;
1705 * If there's a BPF listener, bounce a copy of this frame
1708 BPF_MTAP(ifp, cur_tx->ste_mbuf);
1710 STE_INC(idx, STE_TX_LIST_CNT);
1713 sc->ste_cdata.ste_tx_prod = idx;
1722 struct ste_softc *sc;
1728 if_printf(ifp, "watchdog timeout\n");
1735 ste_init_locked(sc);
1737 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1738 ste_start_locked(ifp);
1748 struct ste_softc *sc;
1750 sc = device_get_softc(dev);