1 /*-
2  * SPDX-License-Identifier: BSD-4-Clause
19  * 4. Neither the name of the author nor the names of any co-contributors
41  * The Level 1 chip is used on some D-Link, SMC and Addtron NICs.
42  * It's a 64-bit PCI part that supports TCP/IP checksum offload,
47  * of double buffer DMA where the packet data is copied to a
48  * pre-allocated DMA buffer who's physical address has been loaded
52  * for double buffering. This may be true in Windows NT and the like,
57  * Also, the VLAN tagging is done using a 16-entry table which allows
63  * - Jeff James at Intel, for arranging to have the LXT1001 manual
65  * - Beny Chen at D-Link, for actually sending it to me
66  * - Brad Short and Keith Alexis at SMC, for sending me sample
68  * - Paul Saab at Y!, for not killing me (though it remains to be seen
225 		device_printf(sc->lge_dev, "EEPROM read timed out\n");  in lge_eeprom_getword()
269 	 * If we have a non-PCS PHY, pretend that the internal  in lge_miibus_readreg()
273 	if (sc->lge_pcs == 0 && phy == 0)  in lge_miibus_readreg()
283 		device_printf(sc->lge_dev, "PHY read timed out\n");  in lge_miibus_readreg()
306 		device_printf(sc->lge_dev, "PHY write timed out\n");  in lge_miibus_writereg()
320 	mii = device_get_softc(sc->lge_miibus);  in lge_miibus_statchg()
323 	switch (IFM_SUBTYPE(mii->mii_media_active)) {  in lge_miibus_statchg()
344 	if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {  in lge_miibus_statchg()
362 		hashes[1] |= (1 << (h - 32));  in lge_hash_maddr()
372 	ifp = sc->lge_ifp;  in lge_setmulti()
410 		device_printf(sc->lge_dev, "reset never completed\n");  in lge_reset()
429 	while(t->lge_name != NULL) {  in lge_probe()
430 		if ((pci_get_vendor(dev) == t->lge_vid) &&  in lge_probe()
431 		    (pci_get_device(dev) == t->lge_did)) {  in lge_probe()
432 			device_set_desc(dev, t->lge_name);  in lge_probe()
454 	sc->lge_dev = dev;  in lge_attach()
456 	mtx_init(&sc->lge_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,  in lge_attach()
458 	callout_init_mtx(&sc->lge_stat_callout, &sc->lge_mtx, 0);  in lge_attach()
466 	sc->lge_res = bus_alloc_resource_any(dev, LGE_RES, &rid, RF_ACTIVE);  in lge_attach()
468 	if (sc->lge_res == NULL) {  in lge_attach()
474 	sc->lge_btag = rman_get_bustag(sc->lge_res);  in lge_attach()
475 	sc->lge_bhandle = rman_get_bushandle(sc->lge_res);  in lge_attach()
479 	sc->lge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,  in lge_attach()
482 	if (sc->lge_irq == NULL) {  in lge_attach()
498 	sc->lge_ldata = contigmalloc(sizeof(struct lge_list_data), M_DEVBUF,  in lge_attach()
501 	if (sc->lge_ldata == NULL) {  in lge_attach()
514 	ifp = sc->lge_ifp = if_alloc(IFT_ETHER);  in lge_attach()
521 	if_setsendqlen(ifp, LGE_TX_LIST_CNT - 1);  in lge_attach()
526 		sc->lge_pcs = 1;  in lge_attach()
528 		sc->lge_pcs = 0;  in lge_attach()
533 	error = mii_attach(dev, &sc->lge_miibus, ifp, lge_ifmedia_upd,  in lge_attach()
545 	error = bus_setup_intr(dev, sc->lge_irq, INTR_TYPE_NET | INTR_MPSAFE,  in lge_attach()
546 	    NULL, lge_intr, sc, &sc->lge_intrhand);  in lge_attach()
557 	if (sc->lge_ldata)  in lge_attach()
558 		free(sc->lge_ldata, M_DEVBUF);  in lge_attach()
561 	if (sc->lge_irq)  in lge_attach()
562 		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq);  in lge_attach()
563 	if (sc->lge_res)  in lge_attach()
564 		bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res);  in lge_attach()
565 	mtx_destroy(&sc->lge_mtx);  in lge_attach()
576 	ifp = sc->lge_ifp;  in lge_detach()
582 	callout_drain(&sc->lge_stat_callout);  in lge_detach()
587 	bus_teardown_intr(dev, sc->lge_irq, sc->lge_intrhand);  in lge_detach()
588 	bus_release_resource(dev, SYS_RES_IRQ, 0, sc->lge_irq);  in lge_detach()
589 	bus_release_resource(dev, LGE_RES, LGE_RID, sc->lge_res);  in lge_detach()
591 	free(sc->lge_ldata, M_DEVBUF);  in lge_detach()
594 	mtx_destroy(&sc->lge_mtx);  in lge_detach()
609 	cd = &sc->lge_cdata;  in lge_list_tx_init()
610 	ld = sc->lge_ldata;  in lge_list_tx_init()
612 		ld->lge_tx_list[i].lge_mbuf = NULL;  in lge_list_tx_init()
613 		ld->lge_tx_list[i].lge_ctl = 0;  in lge_list_tx_init()
616 	cd->lge_tx_prod = cd->lge_tx_cons = 0;  in lge_list_tx_init()
634 	ld = sc->lge_ldata;  in lge_list_rx_init()
635 	cd = &sc->lge_cdata;  in lge_list_rx_init()
637 	cd->lge_rx_prod = cd->lge_rx_cons = 0;  in lge_list_rx_init()
644 		if (lge_newbuf(sc, &ld->lge_rx_list[i], NULL) == ENOBUFS)  in lge_list_rx_init()
666 			device_printf(sc->lge_dev, "no memory for rx list "  in lge_newbuf()
667 			    "-- packet dropped!\n");  in lge_newbuf()
675 			device_printf(sc->lge_dev, "jumbo allocation failed "  in lge_newbuf()
676 			    "-- packet dropped!\n");  in lge_newbuf()
682 		m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN;  in lge_newbuf()
687 		m_new->m_len = m_new->m_pkthdr.len = LGE_JUMBO_FRAMELEN;  in lge_newbuf()
688 		m_new->m_data = m_new->m_ext.ext_buf;  in lge_newbuf()
698 	c->lge_mbuf = m_new;  in lge_newbuf()
699 	c->lge_fragptr_hi = 0;  in lge_newbuf()
700 	c->lge_fragptr_lo = vtophys(mtod(m_new, caddr_t));  in lge_newbuf()
701 	c->lge_fraglen = m_new->m_len;  in lge_newbuf()
702 	c->lge_ctl = m_new->m_len | LGE_RXCTL_WANTINTR | LGE_FRAGCNT(1);  in lge_newbuf()
703 	c->lge_sts = 0;  in lge_newbuf()
710 	 * DWORD, which lets us specify a 64-bit address if  in lge_newbuf()
711 	 * desired. We only use a 32-bit address for now.  in lge_newbuf()
717 	LGE_INC(sc->lge_cdata.lge_rx_prod, LGE_RX_LIST_CNT);  in lge_newbuf()
730 	sc->lge_cdata.lge_jumbo_buf = contigmalloc(LGE_JMEM, M_DEVBUF,  in lge_alloc_jumbo_mem()
733 	if (sc->lge_cdata.lge_jumbo_buf == NULL) {  in lge_alloc_jumbo_mem()
734 		device_printf(sc->lge_dev, "no memory for jumbo buffers!\n");  in lge_alloc_jumbo_mem()
738 	SLIST_INIT(&sc->lge_jfree_listhead);  in lge_alloc_jumbo_mem()
739 	SLIST_INIT(&sc->lge_jinuse_listhead);  in lge_alloc_jumbo_mem()
745 	ptr = sc->lge_cdata.lge_jumbo_buf;  in lge_alloc_jumbo_mem()
747 		sc->lge_cdata.lge_jslots[i] = ptr;  in lge_alloc_jumbo_mem()
752 			device_printf(sc->lge_dev, "no memory for jumbo "  in lge_alloc_jumbo_mem()
756 		entry->slot = i;  in lge_alloc_jumbo_mem()
757 		SLIST_INSERT_HEAD(&sc->lge_jfree_listhead,  in lge_alloc_jumbo_mem()
769 	if (sc->lge_cdata.lge_jumbo_buf == NULL)  in lge_free_jumbo_mem()
772 	while ((entry = SLIST_FIRST(&sc->lge_jinuse_listhead))) {  in lge_free_jumbo_mem()
773 		device_printf(sc->lge_dev,  in lge_free_jumbo_mem()
775 		SLIST_REMOVE_HEAD(&sc->lge_jinuse_listhead, jpool_entries);  in lge_free_jumbo_mem()
776 		SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, entry,  in lge_free_jumbo_mem()
779 	while (!SLIST_EMPTY(&sc->lge_jfree_listhead)) {  in lge_free_jumbo_mem()
780 		entry = SLIST_FIRST(&sc->lge_jfree_listhead);  in lge_free_jumbo_mem()
781 		SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries);  in lge_free_jumbo_mem()
785 	free(sc->lge_cdata.lge_jumbo_buf, M_DEVBUF);  in lge_free_jumbo_mem()
798 	entry = SLIST_FIRST(&sc->lge_jfree_listhead);  in lge_jalloc()
802 		device_printf(sc->lge_dev, "no free jumbo buffers\n");  in lge_jalloc()
807 	SLIST_REMOVE_HEAD(&sc->lge_jfree_listhead, jpool_entries);  in lge_jalloc()
808 	SLIST_INSERT_HEAD(&sc->lge_jinuse_listhead, entry, jpool_entries);  in lge_jalloc()
809 	return(sc->lge_cdata.lge_jslots[entry->slot]);  in lge_jalloc()
823 	sc = m->m_ext.ext_arg1;  in lge_jfree()
829 	i = ((vm_offset_t)m->m_ext.ext_buf  in lge_jfree()
830 	     - (vm_offset_t)sc->lge_cdata.lge_jumbo_buf) / LGE_JLEN;  in lge_jfree()
835 	entry = SLIST_FIRST(&sc->lge_jinuse_listhead);  in lge_jfree()
838 	entry->slot = i;  in lge_jfree()
839 	SLIST_REMOVE_HEAD(&sc->lge_jinuse_listhead, jpool_entries);  in lge_jfree()
840 	SLIST_INSERT_HEAD(&sc->lge_jfree_listhead, entry, jpool_entries);  in lge_jfree()
856 	ifp = sc->lge_ifp;  in lge_rxeof()
860 	i = sc->lge_cdata.lge_rx_cons;  in lge_rxeof()
866 		cur_rx = &sc->lge_ldata->lge_rx_list[i];  in lge_rxeof()
867 		rxctl = cur_rx->lge_ctl;  in lge_rxeof()
868 		rxsts = cur_rx->lge_sts;  in lge_rxeof()
869 		m = cur_rx->lge_mbuf;  in lge_rxeof()
870 		cur_rx->lge_mbuf = NULL;  in lge_rxeof()
873 		c--;  in lge_rxeof()
878 		 * it should simply get re-used next time this descriptor  in lge_rxeof()
892 				device_printf(sc->lge_dev, "no receive buffers "  in lge_rxeof()
893 				    "available -- packet dropped!\n");  in lge_rxeof()
899 			m->m_pkthdr.rcvif = ifp;  in lge_rxeof()
900 			m->m_pkthdr.len = m->m_len = total_len;  in lge_rxeof()
907 			m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;  in lge_rxeof()
909 			m->m_pkthdr.csum_flags |= CSUM_IP_VALID;  in lge_rxeof()
914 			m->m_pkthdr.csum_flags |=  in lge_rxeof()
916 			m->m_pkthdr.csum_data = 0xffff;  in lge_rxeof()
924 	sc->lge_cdata.lge_rx_cons = i;  in lge_rxeof()
934 	ifp = sc->lge_ifp;  in lge_rxeoc()
952 	ifp = sc->lge_ifp;  in lge_txeof()
955 	sc->lge_timer = 0;  in lge_txeof()
961 	idx = sc->lge_cdata.lge_tx_cons;  in lge_txeof()
964 	while (idx != sc->lge_cdata.lge_tx_prod && txdone) {  in lge_txeof()
965 		cur_tx = &sc->lge_ldata->lge_tx_list[idx];  in lge_txeof()
968 		if (cur_tx->lge_mbuf != NULL) {  in lge_txeof()
969 			m_freem(cur_tx->lge_mbuf);  in lge_txeof()
970 			cur_tx->lge_mbuf = NULL;  in lge_txeof()
972 		cur_tx->lge_ctl = 0;  in lge_txeof()
974 		txdone--;  in lge_txeof()
976 		sc->lge_timer = 0;  in lge_txeof()
979 	sc->lge_cdata.lge_tx_cons = idx;  in lge_txeof()
995 	ifp = sc->lge_ifp;  in lge_tick()
1003 	if (!sc->lge_link) {  in lge_tick()
1004 		mii = device_get_softc(sc->lge_miibus);  in lge_tick()
1006 		if (mii->mii_media_status & IFM_ACTIVE &&  in lge_tick()
1007 		    IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {  in lge_tick()
1008 			sc->lge_link++;  in lge_tick()
1010 		  	    (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX||  in lge_tick()
1011 			    IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T))  in lge_tick()
1012 				device_printf(sc->lge_dev, "gigabit link up\n");  in lge_tick()
1018 	if (sc->lge_timer != 0 && --sc->lge_timer == 0)  in lge_tick()
1020 	callout_reset(&sc->lge_stat_callout, hz, lge_tick, sc);  in lge_tick()
1033 	ifp = sc->lge_ifp;  in lge_intr()
1064 			sc->lge_link = 0;  in lge_intr()
1065 			callout_stop(&sc->lge_stat_callout);  in lge_intr()
1070 	/* Re-enable interrupts. */  in lge_intr()
1098 	cur_tx = &sc->lge_ldata->lge_tx_list[*txidx];  in lge_encap()
1101 	for (m = m_head; m != NULL; m = m->m_next) {  in lge_encap()
1102 		if (m->m_len != 0) {  in lge_encap()
1103 			tot_len += m->m_len;  in lge_encap()
1104 			f = &cur_tx->lge_frags[frag];  in lge_encap()
1105 			f->lge_fraglen = m->m_len;  in lge_encap()
1106 			f->lge_fragptr_lo = vtophys(mtod(m, vm_offset_t));  in lge_encap()
1107 			f->lge_fragptr_hi = 0;  in lge_encap()
1115 	cur_tx->lge_mbuf = m_head;  in lge_encap()
1116 	cur_tx->lge_ctl = LGE_TXCTL_WANTINTR|LGE_FRAGCNT(frag)|tot_len;  in lge_encap()
1152 	if (!sc->lge_link)  in lge_start_locked()
1155 	idx = sc->lge_cdata.lge_tx_prod;  in lge_start_locked()
1160 	while(sc->lge_ldata->lge_tx_list[idx].lge_mbuf == NULL) {  in lge_start_locked()
1181 	sc->lge_cdata.lge_tx_prod = idx;  in lge_start_locked()
1186 	sc->lge_timer = 5;  in lge_start_locked()
1204 	if_t			ifp = sc->lge_ifp;  in lge_init_locked()
1217 	CSR_WRITE_4(sc, LGE_PAR0, *(u_int32_t *)(&if_getlladdr(sc->lge_ifp)[0]));  in lge_init_locked()
1218 	CSR_WRITE_4(sc, LGE_PAR1, *(u_int32_t *)(&if_getlladdr(sc->lge_ifp)[4]));  in lge_init_locked()
1222 		device_printf(sc->lge_dev, "initialization failed: no "  in lge_init_locked()
1321 	callout_reset(&sc->lge_stat_callout, hz, lge_tick, sc);  in lge_init_locked()
1352 	mii = device_get_softc(sc->lge_miibus);  in lge_ifmedia_upd_locked()
1353 	sc->lge_link = 0;  in lge_ifmedia_upd_locked()
1354 	LIST_FOREACH(miisc, &mii->mii_phys, mii_list)  in lge_ifmedia_upd_locked()
1371 	mii = device_get_softc(sc->lge_miibus);  in lge_ifmedia_sts()
1373 	ifmr->ifm_active = mii->mii_media_active;  in lge_ifmedia_sts()
1374 	ifmr->ifm_status = mii->mii_media_status;  in lge_ifmedia_sts()
1391 		if (ifr->ifr_mtu > LGE_JUMBO_MTU)  in lge_ioctl()
1394 			if_setmtu(ifp, ifr->ifr_mtu);  in lge_ioctl()
1402 			    !(sc->lge_if_flags & IFF_PROMISC)) {  in lge_ioctl()
1408 			    sc->lge_if_flags & IFF_PROMISC) {  in lge_ioctl()
1419 		sc->lge_if_flags = if_getflags(ifp);  in lge_ioctl()
1432 		mii = device_get_softc(sc->lge_miibus);  in lge_ioctl()
1433 		error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);  in lge_ioctl()
1449 	ifp = sc->lge_ifp;  in lge_watchdog()
1474 	ifp = sc->lge_ifp;  in lge_stop()
1475 	sc->lge_timer = 0;  in lge_stop()
1476 	callout_stop(&sc->lge_stat_callout);  in lge_stop()
1481 	sc->lge_link = 0;  in lge_stop()
1487 		if (sc->lge_ldata->lge_rx_list[i].lge_mbuf != NULL) {  in lge_stop()
1488 			m_freem(sc->lge_ldata->lge_rx_list[i].lge_mbuf);  in lge_stop()
1489 			sc->lge_ldata->lge_rx_list[i].lge_mbuf = NULL;  in lge_stop()
1492 	bzero((char *)&sc->lge_ldata->lge_rx_list,  in lge_stop()
1493 		sizeof(sc->lge_ldata->lge_rx_list));  in lge_stop()
1499 		if (sc->lge_ldata->lge_tx_list[i].lge_mbuf != NULL) {  in lge_stop()
1500 			m_freem(sc->lge_ldata->lge_tx_list[i].lge_mbuf);  in lge_stop()
1501 			sc->lge_ldata->lge_tx_list[i].lge_mbuf = NULL;  in lge_stop()
1505 	bzero((char *)&sc->lge_ldata->lge_tx_list,  in lge_stop()
1506 		sizeof(sc->lge_ldata->lge_tx_list));  in lge_stop()