1 // SPDX-License-Identifier: GPL-2.0+
19 #define ETH_PORT_STR			"brcm,enetsw-port"
150 	writel_be(0, priv->base + MII_SC_REG);  in bcm6368_mdio_read()
159 	writel_be(val, priv->base + MII_SC_REG);  in bcm6368_mdio_read()
162 	return readw_be(priv->base + MII_DAT_REG);  in bcm6368_mdio_read()
170 	writel_be(0, priv->base + MII_SC_REG);  in bcm6368_mdio_write()
181 	writel_be(val, priv->base + MII_SC_REG);  in bcm6368_mdio_write()
191 	return dma_prepare_rcv_buf(&priv->rx_dma, packet, len);  in bcm6368_eth_free_pkt()
198 	return dma_receive(&priv->rx_dma, (void**)packetp, NULL);  in bcm6368_eth_recv()
207 		memset(packet + length, 0, ETH_ZLEN - length);  in bcm6368_eth_send()
211 	return dma_send(&priv->tx_dma, packet, length, NULL);  in bcm6368_eth_send()
219 	for (i = 0; i < priv->num_ports; i++) {  in bcm6368_eth_adjust_link()
221 		int val, j, up, adv, lpa, speed, duplex, media;  in bcm6368_eth_adjust_link()  local
225 		port = &priv->used_ports[i];  in bcm6368_eth_adjust_link()
226 		if (!port->used)  in bcm6368_eth_adjust_link()
229 		if (port->bypass_link)  in bcm6368_eth_adjust_link()
235 						port->phy_id, MII_BMSR);  in bcm6368_eth_adjust_link()
241 		if (!(up ^ priv->sw_port_link[i]))  in bcm6368_eth_adjust_link()
244 		priv->sw_port_link[i] = up;  in bcm6368_eth_adjust_link()
248 			dev_info(&priv->pdev->dev, "link DOWN on %s\n",  in bcm6368_eth_adjust_link()
249 				 port->name);  in bcm6368_eth_adjust_link()
251 				  priv->base + ETH_PORTOV_REG(i));  in bcm6368_eth_adjust_link()
254 				  priv->base + ETH_PTCTRL_REG(i));  in bcm6368_eth_adjust_link()
259 					port->phy_id, MII_ADVERTISE);  in bcm6368_eth_adjust_link()
261 		lpa = bcm6368_mdio_read(priv, external_phy, port->phy_id,  in bcm6368_eth_adjust_link()
264 		/* figure out media and duplex from advertise and LPA values */  in bcm6368_eth_adjust_link()
265 		media = mii_nway_result(lpa & adv);  in bcm6368_eth_adjust_link()
275 						port->phy_id, MII_CTRL1000);  in bcm6368_eth_adjust_link()
277 			lpa = bcm6368_mdio_read(priv, external_phy,  in bcm6368_eth_adjust_link()
278 						port->phy_id, MII_STAT1000);  in bcm6368_eth_adjust_link()
281 			    (lpa & (LPA_1000FULL | LPA_1000HALF))) {  in bcm6368_eth_adjust_link()
283 				duplex = (lpa & LPA_1000FULL);  in bcm6368_eth_adjust_link()
287 		pr_alert("link UP on %s, %dMbps, %s-duplex\n",  in bcm6368_eth_adjust_link()
288 			 port->name, speed, duplex ? "full" : "half");  in bcm6368_eth_adjust_link()
300 		writeb_be(override, priv->base + ETH_PORTOV_REG(i));  in bcm6368_eth_adjust_link()
301 		writeb_be(0, priv->base + ETH_PTCTRL_REG(i));  in bcm6368_eth_adjust_link()
313 	for (i = 0; i < priv->num_ports; i++) {  in bcm6368_eth_start()
314 		setbits_8(priv->base + ETH_PORTOV_REG(i),  in bcm6368_eth_start()
316 		setbits_8(priv->base + ETH_PTCTRL_REG(i),  in bcm6368_eth_start()
318 		priv->sw_port_link[i] = 0;  in bcm6368_eth_start()
321 	/* enable external ports */  in bcm6368_eth_start()
322 	for (i = ETH_RGMII_PORT0; i < priv->num_ports; i++) {  in bcm6368_eth_start()
325 		if (!priv->used_ports[i].used)  in bcm6368_eth_start()
328 		if (priv->rgmii_override)  in bcm6368_eth_start()
330 		if (priv->rgmii_timing)  in bcm6368_eth_start()
333 		setbits_8(priv->base + ETH_RGMII_CTRL_REG(i), rgmii_ctrl);  in bcm6368_eth_start()
337 	setbits_8(priv->base + ETH_GMCR_REG, ETH_GMCR_RST_MIB_MASK);  in bcm6368_eth_start()
339 	clrbits_8(priv->base + ETH_GMCR_REG, ETH_GMCR_RST_MIB_MASK);  in bcm6368_eth_start()
343 	setbits_8(priv->base + ETH_IMPOV_REG,  in bcm6368_eth_start()
346 	/* enable switch forward engine */  in bcm6368_eth_start()
347 	setbits_8(priv->base + ETH_SWMODE_REG, ETH_SWMODE_FWD_EN_MASK);  in bcm6368_eth_start()
351 		int ret = dma_prepare_rcv_buf(&priv->rx_dma, net_rx_packets[i],  in bcm6368_eth_start()
357 	/* enable dma rx channel */  in bcm6368_eth_start()
358 	dma_enable(&priv->rx_dma);  in bcm6368_eth_start()
360 	/* enable dma tx channel */  in bcm6368_eth_start()
361 	dma_enable(&priv->tx_dma);  in bcm6368_eth_start()
364 	for (i = 0; i < priv->num_ports; i++) {  in bcm6368_eth_start()
368 		port = &priv->used_ports[i];  in bcm6368_eth_start()
369 		if (!port->used)  in bcm6368_eth_start()
372 		if (!port->bypass_link)  in bcm6368_eth_start()
378 		switch (port->force_speed) {  in bcm6368_eth_start()
389 				__func__, port->name);  in bcm6368_eth_start()
393 		if (port->force_duplex_full)  in bcm6368_eth_start()
396 		writeb_be(override, priv->base + ETH_PORTOV_REG(i));  in bcm6368_eth_start()
397 		writeb_be(0, priv->base + ETH_PTCTRL_REG(i));  in bcm6368_eth_start()
411 	for (i = 0; i < priv->num_ports; i++) {  in bcm6368_eth_stop()
412 		setbits_8(priv->base + ETH_PORTOV_REG(i),  in bcm6368_eth_stop()
414 		setbits_8(priv->base + ETH_PTCTRL_REG(i),  in bcm6368_eth_stop()
419 	for (i = ETH_RGMII_PORT0; i < priv->num_ports; i++) {  in bcm6368_eth_stop()
420 		if (!priv->used_ports[i].used)  in bcm6368_eth_stop()
423 		clrbits_8(priv->base + ETH_RGMII_CTRL_REG(i),  in bcm6368_eth_stop()
428 	clrbits_8(priv->base + ETH_IMPOV_REG,  in bcm6368_eth_stop()
432 	clrbits_8(priv->base + ETH_SWMODE_REG, ETH_SWMODE_FWD_EN_MASK);  in bcm6368_eth_stop()
435 	dma_disable(&priv->rx_dma);  in bcm6368_eth_stop()
438 	dma_disable(&priv->tx_dma);  in bcm6368_eth_stop()
450 	{ .compatible = "brcm,bcm6368-enet", },
458 	for (i = 0; i < priv->num_ports; ++i) {  in bcm6368_phy_is_external()
459 		if (!priv->used_ports[i].used)  in bcm6368_phy_is_external()
461 		if (priv->used_ports[i].phy_id == phy_id)  in bcm6368_phy_is_external()
471 	struct bcm6368_eth_priv *priv = bus->priv;  in bcm6368_mii_mdio_read()
480 	struct bcm6368_eth_priv *priv = bus->priv;  in bcm6368_mii_mdio_write()
493 		return -ENOMEM;  in bcm6368_mdio_init()
496 	bus->read = bcm6368_mii_mdio_read;  in bcm6368_mdio_init()
497 	bus->write = bcm6368_mii_mdio_write;  in bcm6368_mdio_init()
498 	bus->priv = priv;  in bcm6368_mdio_init()
499 	snprintf(bus->name, sizeof(bus->name), "%s", name);  in bcm6368_mdio_init()
512 	priv->base = dev_remap_addr(dev);  in bcm6368_eth_probe()
513 	if (!priv->base)  in bcm6368_eth_probe()
514 		return -EINVAL;  in bcm6368_eth_probe()
515 	pdata->iobase = (phys_addr_t) priv->base;  in bcm6368_eth_probe()
518 	num_ports = dev_read_u32_default(dev, "brcm,num-ports", ETH_MAX_PORT);  in bcm6368_eth_probe()
520 		return -EINVAL;  in bcm6368_eth_probe()
523 	ret = dma_get_by_name(dev, "tx", &priv->tx_dma);  in bcm6368_eth_probe()
525 		return -EINVAL;  in bcm6368_eth_probe()
527 	ret = dma_get_by_name(dev, "rx", &priv->rx_dma);  in bcm6368_eth_probe()
529 		return -EINVAL;  in bcm6368_eth_probe()
531 	/* try to enable clocks */  in bcm6368_eth_probe()
576 	priv->num_ports = num_ports;  in bcm6368_eth_probe()
577 	if (dev_read_bool(dev, "brcm,rgmii-override"))  in bcm6368_eth_probe()
578 		priv->rgmii_override = true;  in bcm6368_eth_probe()
579 	if (dev_read_bool(dev, "brcm,rgmii-timing"))  in bcm6368_eth_probe()
580 		priv->rgmii_timing = true;  in bcm6368_eth_probe()
596 			return -EINVAL;  in bcm6368_eth_probe()
602 			return -EINVAL;  in bcm6368_eth_probe()
605 		phy_id = ofnode_read_u32_default(node, "brcm,phy-id", -1);  in bcm6368_eth_probe()
607 		priv->used_ports[p].used = true;  in bcm6368_eth_probe()
608 		priv->used_ports[p].name = label;  in bcm6368_eth_probe()
609 		priv->used_ports[p].phy_id = phy_id;  in bcm6368_eth_probe()
611 		if (ofnode_read_bool(node, "full-duplex"))  in bcm6368_eth_probe()
612 			priv->used_ports[p].force_duplex_full = true;  in bcm6368_eth_probe()
613 		if (ofnode_read_bool(node, "bypass-link"))  in bcm6368_eth_probe()
614 			priv->used_ports[p].bypass_link = true;  in bcm6368_eth_probe()
617 			priv->used_ports[p].force_speed = speed;  in bcm6368_eth_probe()
621 	ret = bcm6368_mdio_init(dev->name, priv);  in bcm6368_eth_probe()
625 	/* enable jumbo on all ports */  in bcm6368_eth_probe()
626 	writel_be(0x1ff, priv->base + ETH_JMBCTL_PORT_REG);  in bcm6368_eth_probe()
627 	writew_be(9728, priv->base + ETH_JMBCTL_MAXSIZE_REG);  in bcm6368_eth_probe()