1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
77 #include <dev/mii/mii.h>
78 #include <dev/mii/mii_bitbang.h>
79 #include <dev/mii/miivar.h>
83 #define	SMC_LOCK(sc)		mtx_lock(&(sc)->smc_mtx)
84 #define	SMC_UNLOCK(sc)		mtx_unlock(&(sc)->smc_mtx)
85 #define	SMC_ASSERT_LOCKED(sc)	mtx_assert(&(sc)->smc_mtx, MA_OWNED)
129  * MII bit-bang glue
150 	bus_barrier(sc->smc_reg, BSR, 2,  in smc_select_bank()
152 	bus_write_2(sc->smc_reg, BSR, bank & BSR_BANK_MASK);  in smc_select_bank()
153 	bus_barrier(sc->smc_reg, BSR, 2,  in smc_select_bank()
162 	KASSERT((bus_read_2(sc->smc_reg, BSR) &  in smc_mmu_wait()
164 	    device_get_nameunit(sc->smc_dev)));  in smc_mmu_wait()
165 	while (bus_read_2(sc->smc_reg, MMUCR) & MMUCR_BUSY)  in smc_mmu_wait()
173 	return (bus_read_1(sc->smc_reg, offset));  in smc_read_1()
180 	bus_write_1(sc->smc_reg, offset, val);  in smc_write_1()
187 	return (bus_read_2(sc->smc_reg, offset));  in smc_read_2()
194 	bus_write_2(sc->smc_reg, offset, val);  in smc_write_2()
202 	bus_read_multi_2(sc->smc_reg, offset, datap, count);  in smc_read_multi_2()
210 	bus_write_multi_2(sc->smc_reg, offset, datap, count);  in smc_write_multi_2()
218 	bus_barrier(sc->smc_reg, offset, length, flags);  in smc_barrier()
234 	if (sc->smc_usemem)  in smc_probe()
283 	/* Compare REV against known chip revisions. */  in smc_probe()
285 	val = bus_read_2(reg, REV);  in smc_probe()
313 	sc->smc_dev = dev;  in smc_attach()
315 	ifp = sc->smc_ifp = if_alloc(IFT_ETHER);  in smc_attach()
317 	mtx_init(&sc->smc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);  in smc_attach()
320 	callout_init_mtx(&sc->smc_watchdog, &sc->smc_mtx, 0);  in smc_attach()
323 	if (sc->smc_usemem)  in smc_attach()
326 	sc->smc_reg_rid = 0;  in smc_attach()
327 	sc->smc_reg = bus_alloc_resource_anywhere(dev, type, &sc->smc_reg_rid,  in smc_attach()
329 	if (sc->smc_reg == NULL) {  in smc_attach()
334 	sc->smc_irq = bus_alloc_resource_anywhere(dev, SYS_RES_IRQ,  in smc_attach()
335 	    &sc->smc_irq_rid, 1, RF_ACTIVE | RF_SHAREABLE);  in smc_attach()
336 	if (sc->smc_irq == NULL) {  in smc_attach()
346 	val = smc_read_2(sc, REV);  in smc_attach()
347 	sc->smc_chip = (val & REV_CHIP_MASK) >> REV_CHIP_SHIFT;  in smc_attach()
348 	sc->smc_rev = (val * REV_REV_MASK) >> REV_REV_SHIFT;  in smc_attach()
350 		device_printf(dev, "revision %x\n", sc->smc_rev);  in smc_attach()
352 	callout_init_mtx(&sc->smc_mii_tick_ch, &sc->smc_mtx,  in smc_attach()
354 	if (sc->smc_chip >= REV_CHIP_91110FD) {  in smc_attach()
355 		(void)mii_attach(dev, &sc->smc_miibus, ifp,  in smc_attach()
358 		if (sc->smc_miibus != NULL) {  in smc_attach()
359 			sc->smc_mii_tick = smc_mii_tick;  in smc_attach()
360 			sc->smc_mii_mediachg = smc_mii_mediachg;  in smc_attach()
361 			sc->smc_mii_mediaioctl = smc_mii_mediaioctl;  in smc_attach()
391 	TASK_INIT(&sc->smc_intr, SMC_INTR_PRIORITY, smc_task_intr, ifp);  in smc_attach()
392 	NET_TASK_INIT(&sc->smc_rx, SMC_RX_PRIORITY, smc_task_rx, ifp);  in smc_attach()
393 	TASK_INIT(&sc->smc_tx, SMC_TX_PRIORITY, smc_task_tx, ifp);  in smc_attach()
394 	sc->smc_tq = taskqueue_create_fast("smc_taskq", M_NOWAIT,  in smc_attach()
395 	    taskqueue_thread_enqueue, &sc->smc_tq);  in smc_attach()
396 	taskqueue_start_threads(&sc->smc_tq, 1, PI_NET, "%s taskq",  in smc_attach()
397 	    device_get_nameunit(sc->smc_dev));  in smc_attach()
400 	sc->smc_mask = 0;  in smc_attach()
404 	error = bus_setup_intr(dev, sc->smc_irq,  in smc_attach()
405 	    INTR_TYPE_NET|INTR_MPSAFE, smc_intr, NULL, sc, &sc->smc_ih);  in smc_attach()
426 	if (sc->smc_ifp != NULL) {  in smc_detach()
427 		ether_ifdetach(sc->smc_ifp);  in smc_detach()
430 	callout_drain(&sc->smc_watchdog);  in smc_detach()
431 	callout_drain(&sc->smc_mii_tick_ch);  in smc_detach()
434 	if (sc->smc_if_getcapenable(ifp) & IFCAP_POLLING)  in smc_detach()
435 		ether_poll_deregister(sc->smc_ifp);  in smc_detach()
438 	if (sc->smc_ih != NULL)  in smc_detach()
439 		bus_teardown_intr(sc->smc_dev, sc->smc_irq, sc->smc_ih);  in smc_detach()
441 	if (sc->smc_tq != NULL) {  in smc_detach()
442 		taskqueue_drain(sc->smc_tq, &sc->smc_intr);  in smc_detach()
443 		taskqueue_drain(sc->smc_tq, &sc->smc_rx);  in smc_detach()
444 		taskqueue_drain(sc->smc_tq, &sc->smc_tx);  in smc_detach()
445 		taskqueue_free(sc->smc_tq);  in smc_detach()
446 		sc->smc_tq = NULL;  in smc_detach()
449 	if (sc->smc_ifp != NULL) {  in smc_detach()
450 		if_free(sc->smc_ifp);  in smc_detach()
453 	bus_generic_detach(sc->smc_dev);  in smc_detach()
455 	if (sc->smc_reg != NULL) {  in smc_detach()
457 		if (sc->smc_usemem)  in smc_detach()
460 		bus_release_resource(sc->smc_dev, type, sc->smc_reg_rid,  in smc_detach()
461 		    sc->smc_reg);  in smc_detach()
464 	if (sc->smc_irq != NULL)  in smc_detach()
465 		bus_release_resource(sc->smc_dev, SYS_RES_IRQ, sc->smc_irq_rid,  in smc_detach()
466 		   sc->smc_irq);  in smc_detach()
468 	if (mtx_initialized(&sc->smc_mtx))  in smc_detach()
469 		mtx_destroy(&sc->smc_mtx);  in smc_detach()
479 	/* MII interface */
526 	if (len > ETHER_MAX_LEN - ETHER_CRC_LEN) {  in smc_start_locked()
537 	sc->smc_pending = m;  in smc_start_locked()
563 	} while (--spin_count);  in smc_start_locked()
570 		sc->smc_mask |= ALLOC_INT;  in smc_start_locked()
572 			smc_write_1(sc, MSK, sc->smc_mask);  in smc_start_locked()
576 	taskqueue_enqueue(sc->smc_tq, &sc->smc_tx);  in smc_start_locked()
595 	if (sc->smc_pending == NULL) {  in smc_task_tx()
600 	m = m0 = sc->smc_pending;  in smc_task_tx()
601 	sc->smc_pending = NULL;  in smc_task_tx()
640 	for (; m != NULL; m = m->m_next) {  in smc_task_tx()
642 		smc_write_multi_2(sc, DATA0, (uint16_t *)data, m->m_len / 2);  in smc_task_tx()
643 		last_len = m->m_len;  in smc_task_tx()
650 		smc_write_2(sc, DATA0, (CTRL_ODD << 8) | data[last_len - 1]);  in smc_task_tx()
657 	sc->smc_mask |= TX_EMPTY_INT;  in smc_task_tx()
659 		smc_write_1(sc, MSK, sc->smc_mask);  in smc_task_tx()
666 	callout_reset(&sc->smc_watchdog, hz * 2, smc_watchdog, sc);  in smc_task_tx()
726 		len -= 6;  in smc_task_rx()
744 		m->m_pkthdr.rcvif = ifp;  in smc_task_rx()
745 		m->m_pkthdr.len = m->m_len = len + 2; /* XXX: Is this right? */  in smc_task_rx()
774 			m->m_next = NULL;  in smc_task_rx()
776 			mtail->m_next = m;  in smc_task_rx()
782 	sc->smc_mask |= RCV_INT;  in smc_task_rx()
784 		smc_write_1(sc, MSK, sc->smc_mask);  in smc_task_rx()
790 		mhead = mhead->m_next;  in smc_task_rx()
791 		m->m_next = NULL;  in smc_task_rx()
813 		taskqueue_enqueue(sc->smc_tq, &sc->smc_intr);  in smc_poll()
840 	taskqueue_enqueue(sc->smc_tq, &sc->smc_intr);  in smc_intr()
862 	status = smc_read_1(sc, IST) & sc->smc_mask;  in smc_task_intr()
869 		 * Kill off the packet if there is one and re-enable transmit.  in smc_task_intr()
873 			callout_stop(&sc->smc_watchdog);  in smc_task_intr()
882 				device_printf(sc->smc_dev,  in smc_task_intr()
894 			taskqueue_enqueue(sc->smc_tq, &sc->smc_tx);  in smc_task_intr()
908 		sc->smc_mask &= ~RCV_INT;  in smc_task_intr()
909 		taskqueue_enqueue(sc->smc_tq, &sc->smc_rx);  in smc_task_intr()
917 		sc->smc_mask &= ~ALLOC_INT;  in smc_task_intr()
918 		taskqueue_enqueue(sc->smc_tq, &sc->smc_tx);  in smc_task_intr()
934 		sc->smc_mask &= ~TX_EMPTY_INT;  in smc_task_intr()
935 		callout_stop(&sc->smc_watchdog);  in smc_task_intr()
950 		taskqueue_enqueue(sc->smc_tq, &sc->smc_tx);  in smc_task_intr()
958 		smc_write_1(sc, MSK, sc->smc_mask);  in smc_task_intr()
974 	    device_get_nameunit(sc->smc_dev),  in smc_mii_bitbang_read()
994 	    device_get_nameunit(sc->smc_dev),  in smc_mii_bitbang_write()
1041 	struct mii_data		*mii;  in smc_miibus_statchg()  local
1045 	mii = device_get_softc(sc->smc_miibus);  in smc_miibus_statchg()
1052 	if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)  in smc_miibus_statchg()
1066 	struct mii_data		*mii;  in smc_mii_ifmedia_upd()  local
1069 	if (sc->smc_miibus == NULL)  in smc_mii_ifmedia_upd()
1072 	mii = device_get_softc(sc->smc_miibus);  in smc_mii_ifmedia_upd()
1073 	return (mii_mediachg(mii));  in smc_mii_ifmedia_upd()
1080 	struct mii_data		*mii;  in smc_mii_ifmedia_sts()  local
1083 	if (sc->smc_miibus == NULL)  in smc_mii_ifmedia_sts()
1086 	mii = device_get_softc(sc->smc_miibus);  in smc_mii_ifmedia_sts()
1087 	mii_pollstat(mii);  in smc_mii_ifmedia_sts()
1088 	ifmr->ifm_active = mii->mii_media_active;  in smc_mii_ifmedia_sts()
1089 	ifmr->ifm_status = mii->mii_media_status;  in smc_mii_ifmedia_sts()
1099 	if (sc->smc_miibus == NULL)  in smc_mii_tick()
1104 	mii_tick(device_get_softc(sc->smc_miibus));  in smc_mii_tick()
1105 	callout_reset(&sc->smc_mii_tick_ch, hz, smc_mii_tick, sc);  in smc_mii_tick()
1112 	if (sc->smc_miibus == NULL)  in smc_mii_mediachg()
1114 	mii_mediachg(device_get_softc(sc->smc_miibus));  in smc_mii_mediachg()
1120 	struct mii_data	*mii;  in smc_mii_mediaioctl()  local
1122 	if (sc->smc_miibus == NULL)  in smc_mii_mediaioctl()
1125 	mii = device_get_softc(sc->smc_miibus);  in smc_mii_mediaioctl()
1126 	return (ifmedia_ioctl(sc->smc_ifp, ifr, &mii->mii_media, command));  in smc_mii_mediaioctl()
1185 	ifp = sc->smc_ifp;  in smc_enable()
1204 	sc->smc_mask = EPH_INT | RX_OVRN_INT | RCV_INT | TX_INT;  in smc_enable()
1206 		smc_write_1(sc, MSK, sc->smc_mask);  in smc_enable()
1218 	callout_stop(&sc->smc_watchdog);  in smc_stop()
1219 	callout_stop(&sc->smc_mii_tick_ch);  in smc_stop()
1225 	sc->smc_mask = 0;  in smc_stop()
1228 	ether_poll_deregister(sc->smc_ifp);  in smc_stop()
1239 	if_setdrvflagbits(sc->smc_ifp, 0, IFF_DRV_RUNNING);  in smc_stop()
1248 	device_printf(sc->smc_dev, "watchdog timeout\n");  in smc_watchdog()
1249 	taskqueue_enqueue(sc->smc_tq, &sc->smc_intr);  in smc_watchdog()
1269 	ifp = sc->smc_ifp;  in smc_init_locked()
1281 	if (sc->smc_mii_tick != NULL)  in smc_init_locked()
1282 		callout_reset(&sc->smc_mii_tick_ch, hz, sc->smc_mii_tick, sc);  in smc_init_locked()
1310 			if (sc->smc_mii_mediachg != NULL)  in smc_ioctl()
1311 				sc->smc_mii_mediachg(sc);  in smc_ioctl()
1327 		if (sc->smc_mii_mediaioctl == NULL) {  in smc_ioctl()
1331 		sc->smc_mii_mediaioctl(sc, (struct ifreq *)data, cmd);  in smc_ioctl()