36 static inline int arc_emac_tx_avail(struct arc_emac_priv *priv)  in arc_emac_tx_avail()  argument
38 	return (priv->txbd_dirty + TX_BD_NUM - priv->txbd_curr - 1) % TX_BD_NUM;  in arc_emac_tx_avail()
50 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_adjust_link()  local
51 	struct phy_device *phy_dev = priv->phy_dev;  in arc_emac_adjust_link()
54 	if (priv->link != phy_dev->link) {  in arc_emac_adjust_link()
55 		priv->link = phy_dev->link;  in arc_emac_adjust_link()
59 	if (priv->speed != phy_dev->speed) {  in arc_emac_adjust_link()
60 		priv->speed = phy_dev->speed;  in arc_emac_adjust_link()
62 		if (priv->set_mac_speed)  in arc_emac_adjust_link()
63 			priv->set_mac_speed(priv, priv->speed);  in arc_emac_adjust_link()
66 	if (priv->duplex != phy_dev->duplex) {  in arc_emac_adjust_link()
67 		reg = arc_reg_get(priv, R_CTRL);  in arc_emac_adjust_link()
74 		arc_reg_set(priv, R_CTRL, reg);  in arc_emac_adjust_link()
75 		priv->duplex = phy_dev->duplex;  in arc_emac_adjust_link()
96 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_get_settings()  local
98 	return phy_ethtool_gset(priv->phy_dev, cmd);  in arc_emac_get_settings()
115 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_set_settings()  local
120 	return phy_ethtool_sset(priv->phy_dev, cmd);  in arc_emac_set_settings()
134 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_get_drvinfo()  local
136 	strlcpy(info->driver, priv->drv_name, sizeof(info->driver));  in arc_emac_get_drvinfo()
137 	strlcpy(info->version, priv->drv_version, sizeof(info->version));  in arc_emac_get_drvinfo()
155 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_tx_clean()  local
160 		unsigned int *txbd_dirty = &priv->txbd_dirty;  in arc_emac_tx_clean()
161 		struct arc_emac_bd *txbd = &priv->txbd[*txbd_dirty];  in arc_emac_tx_clean()
162 		struct buffer_state *tx_buff = &priv->tx_buff[*txbd_dirty];  in arc_emac_tx_clean()
203 	if (netif_queue_stopped(ndev) && arc_emac_tx_avail(priv))  in arc_emac_tx_clean()
218 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_rx()  local
222 		unsigned int *last_rx_bd = &priv->last_rx_bd;  in arc_emac_rx()
224 		struct buffer_state *rx_buff = &priv->rx_buff[*last_rx_bd];  in arc_emac_rx()
225 		struct arc_emac_bd *rxbd = &priv->rxbd[*last_rx_bd];  in arc_emac_rx()
311 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_poll()  local
319 		arc_reg_or(priv, R_ENABLE, RXINT_MASK | TXINT_MASK);  in arc_emac_poll()
338 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_intr()  local
342 	status = arc_reg_get(priv, R_STATUS);  in arc_emac_intr()
346 	arc_reg_set(priv, R_STATUS, status);  in arc_emac_intr()
349 		if (likely(napi_schedule_prep(&priv->napi))) {  in arc_emac_intr()
350 			arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK);  in arc_emac_intr()
351 			__napi_schedule(&priv->napi);  in arc_emac_intr()
405 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_open()  local
406 	struct phy_device *phy_dev = priv->phy_dev;  in arc_emac_open()
414 	priv->last_rx_bd = 0;  in arc_emac_open()
419 		unsigned int *last_rx_bd = &priv->last_rx_bd;  in arc_emac_open()
420 		struct arc_emac_bd *rxbd = &priv->rxbd[*last_rx_bd];  in arc_emac_open()
421 		struct buffer_state *rx_buff = &priv->rx_buff[*last_rx_bd];  in arc_emac_open()
450 	memset(priv->txbd, 0, TX_RING_SZ);  in arc_emac_open()
453 	arc_reg_set(priv, R_LAFL, 0);  in arc_emac_open()
454 	arc_reg_set(priv, R_LAFH, 0);  in arc_emac_open()
457 	arc_reg_set(priv, R_RX_RING, (unsigned int)priv->rxbd_dma);  in arc_emac_open()
458 	arc_reg_set(priv, R_TX_RING, (unsigned int)priv->txbd_dma);  in arc_emac_open()
461 	arc_reg_set(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);  in arc_emac_open()
464 	arc_reg_set(priv, R_CTRL,  in arc_emac_open()
469 	napi_enable(&priv->napi);  in arc_emac_open()
472 	arc_reg_or(priv, R_CTRL, EN_MASK);  in arc_emac_open()
474 	phy_start_aneg(priv->phy_dev);  in arc_emac_open()
490 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_set_rx_mode()  local
493 		arc_reg_or(priv, R_CTRL, PROM_MASK);  in arc_emac_set_rx_mode()
495 		arc_reg_clr(priv, R_CTRL, PROM_MASK);  in arc_emac_set_rx_mode()
498 			arc_reg_set(priv, R_LAFL, ~0);  in arc_emac_set_rx_mode()
499 			arc_reg_set(priv, R_LAFH, ~0);  in arc_emac_set_rx_mode()
510 			arc_reg_set(priv, R_LAFL, filter[0]);  in arc_emac_set_rx_mode()
511 			arc_reg_set(priv, R_LAFH, filter[1]);  in arc_emac_set_rx_mode()
526 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_stop()  local
528 	napi_disable(&priv->napi);  in arc_emac_stop()
532 	arc_reg_clr(priv, R_ENABLE, RXINT_MASK | TXINT_MASK | ERR_MASK);  in arc_emac_stop()
535 	arc_reg_clr(priv, R_CTRL, EN_MASK);  in arc_emac_stop()
549 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_stats()  local
554 	rxerr = arc_reg_get(priv, R_RXERR);  in arc_emac_stats()
555 	miss = arc_reg_get(priv, R_MISS);  in arc_emac_stats()
584 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_tx()  local
585 	unsigned int len, *txbd_curr = &priv->txbd_curr;  in arc_emac_tx()
587 	__le32 *info = &priv->txbd[*txbd_curr].info;  in arc_emac_tx()
595 	if (unlikely(!arc_emac_tx_avail(priv))) {  in arc_emac_tx()
610 	dma_unmap_addr_set(&priv->tx_buff[*txbd_curr], addr, addr);  in arc_emac_tx()
611 	dma_unmap_len_set(&priv->tx_buff[*txbd_curr], len, len);  in arc_emac_tx()
613 	priv->tx_buff[*txbd_curr].skb = skb;  in arc_emac_tx()
614 	priv->txbd[*txbd_curr].data = cpu_to_le32(addr);  in arc_emac_tx()
632 	if (!arc_emac_tx_avail(priv)) {  in arc_emac_tx()
636 		if (arc_emac_tx_avail(priv))  in arc_emac_tx()
640 	arc_reg_set(priv, R_STATUS, TXPL_MASK);  in arc_emac_tx()
647 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_set_address_internal()  local
653 	arc_reg_set(priv, R_ADDRL, addr_low);  in arc_emac_set_address_internal()
654 	arc_reg_set(priv, R_ADDRH, addr_hi);  in arc_emac_set_address_internal()
702 	struct arc_emac_priv *priv;  in arc_emac_probe()  local
736 	priv = netdev_priv(ndev);  in arc_emac_probe()
737 	priv->dev = dev;  in arc_emac_probe()
739 	priv->regs = devm_ioremap_resource(dev, &res_regs);  in arc_emac_probe()
740 	if (IS_ERR(priv->regs)) {  in arc_emac_probe()
741 		return PTR_ERR(priv->regs);  in arc_emac_probe()
743 	dev_dbg(dev, "Registers base address is 0x%p\n", priv->regs);  in arc_emac_probe()
745 	if (priv->clk) {  in arc_emac_probe()
746 		err = clk_prepare_enable(priv->clk);  in arc_emac_probe()
752 		clock_frequency = clk_get_rate(priv->clk);  in arc_emac_probe()
762 	id = arc_reg_get(priv, R_ID);  in arc_emac_probe()
773 	arc_reg_set(priv, R_POLLRATE, clock_frequency / 1000000);  in arc_emac_probe()
798 	priv->rxbd = dmam_alloc_coherent(dev, RX_RING_SZ + TX_RING_SZ,  in arc_emac_probe()
799 					 &priv->rxbd_dma, GFP_KERNEL);  in arc_emac_probe()
801 	if (!priv->rxbd) {  in arc_emac_probe()
807 	priv->txbd = priv->rxbd + RX_BD_NUM;  in arc_emac_probe()
809 	priv->txbd_dma = priv->rxbd_dma + RX_RING_SZ;  in arc_emac_probe()
811 		(unsigned int)priv->rxbd_dma, (unsigned int)priv->txbd_dma);  in arc_emac_probe()
813 	err = arc_mdio_probe(priv);  in arc_emac_probe()
819 	priv->phy_dev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0,  in arc_emac_probe()
821 	if (!priv->phy_dev) {  in arc_emac_probe()
828 		 priv->phy_dev->drv->name, priv->phy_dev->phy_id);  in arc_emac_probe()
830 	netif_napi_add(ndev, &priv->napi, arc_emac_poll, ARC_EMAC_NAPI_WEIGHT);  in arc_emac_probe()
841 	netif_napi_del(&priv->napi);  in arc_emac_probe()
842 	phy_disconnect(priv->phy_dev);  in arc_emac_probe()
843 	priv->phy_dev = NULL;  in arc_emac_probe()
845 	arc_mdio_remove(priv);  in arc_emac_probe()
847 	if (priv->clk)  in arc_emac_probe()
848 		clk_disable_unprepare(priv->clk);  in arc_emac_probe()
855 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_remove()  local
857 	phy_disconnect(priv->phy_dev);  in arc_emac_remove()
858 	priv->phy_dev = NULL;  in arc_emac_remove()
859 	arc_mdio_remove(priv);  in arc_emac_remove()
861 	netif_napi_del(&priv->napi);  in arc_emac_remove()
863 	if (!IS_ERR(priv->clk)) {  in arc_emac_remove()
864 		clk_disable_unprepare(priv->clk);  in arc_emac_remove()