1 /*-
5  * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
32  * Chapter 17, Altera Cyclone V Device Handbook (CV-5V2 2014.07.22)
34  * EMAC is an instance of the Synopsys DesignWare 3504-0
82 	{ -1, 0 }
100 	mii = sc->mii_softc;  in dwc_media_status()
103 	ifmr->ifm_active = mii->mii_media_active;  in dwc_media_status()
104 	ifmr->ifm_status = mii->mii_media_status;  in dwc_media_status()
112 	return (mii_mediachg(sc->mii_softc));  in dwc_media_change_locked()
140 	if (!sc->link_is_up)  in dwc_txstart_locked()
143 	ifp = sc->ifp;  in dwc_txstart_locked()
164 	if_t ifp = sc->ifp;  in dwc_init_locked()
173 	 * to set up the remaining config registers based on current media.  in dwc_init_locked()
175 	mii_mediachg(sc->mii_softc);  in dwc_init_locked()
185 	callout_reset(&sc->dwc_callout, hz, dwc_tick, sc);  in dwc_init_locked()
205 	ifp = sc->ifp;  in dwc_stop_locked()
207 	sc->tx_watchdog_count = 0;  in dwc_stop_locked()
208 	sc->stats_harvest_count = 0;  in dwc_stop_locked()
210 	callout_stop(&sc->dwc_callout);  in dwc_stop_locked()
233 				flags = if_getflags(ifp) ^ sc->if_flags;  in dwc_ioctl()
237 				if (!sc->is_detaching)  in dwc_ioctl()
244 		sc->if_flags = if_getflags(ifp);  in dwc_ioctl()
257 		mii = sc->mii_softc;  in dwc_ioctl()
258 		error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);  in dwc_ioctl()
261 		mask = ifr->ifr_reqcap ^ if_getcapenable(ifp);  in dwc_ioctl()
306 		device_printf(sc->dev,  in dwc_intr()
325 	ifp = sc->ifp;  in dwc_tick()
335 	if (sc->tx_watchdog_count > 0) {  in dwc_tick()
336 		if (--sc->tx_watchdog_count == 0) {  in dwc_tick()
345 	link_was_up = sc->link_is_up;  in dwc_tick()
346 	mii_tick(sc->mii_softc);  in dwc_tick()
347 	if (sc->link_is_up && !link_was_up)  in dwc_tick()
351 	callout_reset(&sc->dwc_callout, hz, dwc_tick, sc);  in dwc_tick()
367 	 * present in the ethernet-phy node.  in dwc_reset_phy()
369 	if (OF_getencprop(sc->node, "snps,reset-gpio",  in dwc_reset_phy()
373 	if (OF_getencprop(sc->node, "snps,reset-delays-us",  in dwc_reset_phy()
375 		device_printf(sc->dev,  in dwc_reset_phy()
376 		    "Wrong property for snps,reset-delays-us");  in dwc_reset_phy()
382 		device_printf(sc->dev,  in dwc_reset_phy()
387 	if (GPIO_MAP_GPIOS(gpio, sc->node, gpio_node,  in dwc_reset_phy()
388 	    nitems(gpio_prop) - 1,  in dwc_reset_phy()
390 		device_printf(sc->dev, "Can't map gpio for phy reset\n");  in dwc_reset_phy()
395 	if (OF_hasprop(sc->node, "snps,reset-active-low"))  in dwc_reset_phy()
416 	rv = clk_get_by_ofw_name(sc->dev, 0, "stmmaceth", &sc->clk_stmmaceth);  in dwc_clock_init()
418 		device_printf(sc->dev, "Cannot get GMAC main clock\n");  in dwc_clock_init()
421 	if ((rv = clk_enable(sc->clk_stmmaceth)) != 0) {  in dwc_clock_init()
422 		device_printf(sc->dev, "could not enable main clock\n");  in dwc_clock_init()
427 	rv = clk_get_by_ofw_name(sc->dev, 0, "pclk", &sc->clk_pclk);  in dwc_clock_init()
430 	if ((rv = clk_enable(sc->clk_pclk)) != 0) {  in dwc_clock_init()
431 		device_printf(sc->dev, "could not enable peripheral clock\n");  in dwc_clock_init()
436 		clk_get_freq(sc->clk_stmmaceth, &freq);  in dwc_clock_init()
437 		device_printf(sc->dev, "MAC clock(%s) freq: %jd\n",  in dwc_clock_init()
438 		    clk_get_name(sc->clk_stmmaceth), (intmax_t)freq);  in dwc_clock_init()
450 	rv = hwreset_get_by_ofw_name(sc->dev, 0, "stmmaceth", &sc->rst_stmmaceth);  in dwc_reset_deassert()
452 		device_printf(sc->dev, "Cannot get GMAC reset\n");  in dwc_reset_deassert()
455 	rv = hwreset_deassert(sc->rst_stmmaceth);  in dwc_reset_deassert()
457 		device_printf(sc->dev, "could not de-assert GMAC reset\n");  in dwc_reset_deassert()
462 	rv = hwreset_get_by_ofw_name(sc->dev, 0, "ahb", &sc->rst_ahb);  in dwc_reset_deassert()
465 	rv = hwreset_deassert(sc->rst_ahb);  in dwc_reset_deassert()
467 		device_printf(sc->dev, "could not de-assert AHB reset\n");  in dwc_reset_deassert()
502 	sc->dev = dev;  in dwc_attach()
503 	sc->rx_idx = 0;  in dwc_attach()
504 	sc->tx_desccount = TX_DESC_COUNT;  in dwc_attach()
505 	sc->tx_mapcount = 0;  in dwc_attach()
507 	sc->node = ofw_bus_get_node(dev);  in dwc_attach()
508 	sc->phy_mode = mii_fdt_get_contype(sc->node);  in dwc_attach()
509 	switch (sc->phy_mode) {  in dwc_attach()
522 	if (OF_getencprop(sc->node, "snps,pbl", &pbl, sizeof(uint32_t)) <= 0)  in dwc_attach()
524 	if (OF_getencprop(sc->node, "snps,txpbl", &sc->txpbl, sizeof(uint32_t)) <= 0)  in dwc_attach()
525 		sc->txpbl = pbl;  in dwc_attach()
526 	if (OF_getencprop(sc->node, "snps,rxpbl", &sc->rxpbl, sizeof(uint32_t)) <= 0)  in dwc_attach()
527 		sc->rxpbl = pbl;  in dwc_attach()
528 	if (OF_hasprop(sc->node, "snps,no-pbl-x8") == 1)  in dwc_attach()
529 		sc->nopblx8 = true;  in dwc_attach()
530 	if (OF_hasprop(sc->node, "snps,fixed-burst") == 1)  in dwc_attach()
531 		sc->fixed_burst = true;  in dwc_attach()
532 	if (OF_hasprop(sc->node, "snps,mixed-burst") == 1)  in dwc_attach()
533 		sc->mixed_burst = true;  in dwc_attach()
534 	if (OF_hasprop(sc->node, "snps,aal") == 1)  in dwc_attach()
535 		sc->aal = true;  in dwc_attach()
546 	/* De-assert main reset */  in dwc_attach()
553 	if ((sc->mii_clk = IF_DWC_MII_CLK(dev)) < 0) {  in dwc_attach()
554 		device_printf(dev, "Cannot get mii clock value %d\n", -sc->mii_clk);  in dwc_attach()
558 	if (bus_alloc_resources(dev, dwc_spec, sc->res)) {  in dwc_attach()
569 		bus_release_resources(dev, dwc_spec, sc->res);  in dwc_attach()
575 		device_printf(sc->dev, "Can't reset DMA controller.\n");  in dwc_attach()
576 		bus_release_resources(sc->dev, dwc_spec, sc->res);  in dwc_attach()
581 		bus_release_resources(dev, dwc_spec, sc->res);  in dwc_attach()
585 	mtx_init(&sc->mtx, device_get_nameunit(sc->dev),  in dwc_attach()
588 	callout_init_mtx(&sc->dwc_callout, &sc->mtx, 0);  in dwc_attach()
591 	error = bus_setup_intr(dev, sc->res[1], INTR_TYPE_NET | INTR_MPSAFE,  in dwc_attach()
592 	    NULL, dwc_intr, sc, &sc->intr_cookie);  in dwc_attach()
595 		bus_release_resources(dev, dwc_spec, sc->res);  in dwc_attach()
600 	sc->ifp = ifp = if_alloc(IFT_ETHER);  in dwc_attach()
604 	if_setflags(sc->ifp, IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST);  in dwc_attach()
608 	if_setsendqlen(ifp, TX_MAP_COUNT - 1);  in dwc_attach()
609 	if_setsendqready(sc->ifp);  in dwc_attach()
610 	if_sethwassist(sc->ifp, CSUM_IP | CSUM_UDP | CSUM_TCP);  in dwc_attach()
611 	if_setcapabilities(sc->ifp, IFCAP_VLAN_MTU | IFCAP_HWCSUM);  in dwc_attach()
612 	if_setcapenable(sc->ifp, if_getcapabilities(sc->ifp));  in dwc_attach()
615 	error = mii_attach(dev, &sc->miibus, ifp, dwc_media_change,  in dwc_attach()
621 		bus_teardown_intr(dev, sc->res[1], sc->intr_cookie);  in dwc_attach()
622 		bus_release_resources(dev, dwc_spec, sc->res);  in dwc_attach()
625 	sc->mii_softc = device_get_softc(sc->miibus);  in dwc_attach()
629 	sc->is_attached = true;  in dwc_attach()
646 	if (sc->intr_cookie != NULL) {  in dwc_detach()
647 		bus_teardown_intr(dev, sc->res[1], sc->intr_cookie);  in dwc_detach()
650 	if (sc->is_attached) {  in dwc_detach()
652 		sc->is_detaching = true;  in dwc_detach()
655 		callout_drain(&sc->dwc_callout);  in dwc_detach()
656 		ether_ifdetach(sc->ifp);  in dwc_detach()
664 	if (sc->ifp != NULL) {  in dwc_detach()
665 		if_free(sc->ifp);  in dwc_detach()
666 		sc->ifp = NULL;  in dwc_detach()
669 	bus_release_resources(dev, dwc_spec, sc->res);  in dwc_detach()
671 	mtx_destroy(&sc->mtx);  in dwc_detach()