30  * @ks: The chip state
35 static void ks8851_lock(struct ks8851_net *ks, unsigned long *flags)  in ks8851_lock()  argument
37 	ks->lock(ks, flags);  in ks8851_lock()
42  * @ks: The chip state
47 static void ks8851_unlock(struct ks8851_net *ks, unsigned long *flags)  in ks8851_unlock()  argument
49 	ks->unlock(ks, flags);  in ks8851_unlock()
54  * @ks: The chip state
60 static void ks8851_wrreg16(struct ks8851_net *ks, unsigned int reg,  in ks8851_wrreg16()  argument
63 	ks->wrreg16(ks, reg, val);  in ks8851_wrreg16()
68  * @ks: The chip information
73 static unsigned int ks8851_rdreg16(struct ks8851_net *ks,  in ks8851_rdreg16()  argument
76 	return ks->rdreg16(ks, reg);  in ks8851_rdreg16()
81  * @ks: The device state.
92 static void ks8851_soft_reset(struct ks8851_net *ks, unsigned op)  in ks8851_soft_reset()  argument
94 	ks8851_wrreg16(ks, KS_GRR, op);  in ks8851_soft_reset()
96 	ks8851_wrreg16(ks, KS_GRR, 0);  in ks8851_soft_reset()
102  * @ks: The device state
107 static void ks8851_set_powermode(struct ks8851_net *ks, unsigned pwrmode)  in ks8851_set_powermode()  argument
111 	netif_dbg(ks, hw, ks->netdev, "setting power mode %d\n", pwrmode);  in ks8851_set_powermode()
113 	pmecr = ks8851_rdreg16(ks, KS_PMECR);  in ks8851_set_powermode()
117 	ks8851_wrreg16(ks, KS_PMECR, pmecr);  in ks8851_set_powermode()
131 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_write_mac_addr()  local
136 	ks8851_lock(ks, &flags);  in ks8851_write_mac_addr()
142 	ks8851_set_powermode(ks, PMECR_PM_NORMAL);  in ks8851_write_mac_addr()
146 		ks8851_wrreg16(ks, KS_MAR(i), val);  in ks8851_write_mac_addr()
150 		ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);  in ks8851_write_mac_addr()
152 	ks8851_unlock(ks, &flags);  in ks8851_write_mac_addr()
165 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_read_mac_addr()  local
171 	ks8851_lock(ks, &flags);  in ks8851_read_mac_addr()
174 		reg = ks8851_rdreg16(ks, KS_MAR(i));  in ks8851_read_mac_addr()
180 	ks8851_unlock(ks, &flags);  in ks8851_read_mac_addr()
185  * @ks: The device structure
194 static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np)  in ks8851_init_mac()  argument
196 	struct net_device *dev = ks->netdev;  in ks8851_init_mac()
205 	if (ks->rc_ccr & CCR_EEPROM) {  in ks8851_init_mac()
210 		netdev_err(ks->netdev, "invalid mac address read %pM\n",  in ks8851_init_mac()
220  * @ks: The device state
225 static void ks8851_dbg_dumpkkt(struct ks8851_net *ks, u8 *rxpkt)  in ks8851_dbg_dumpkkt()  argument
227 	netdev_dbg(ks->netdev,  in ks8851_dbg_dumpkkt()
236  * @ks: The device information.
243 static void ks8851_rx_pkts(struct ks8851_net *ks, struct sk_buff_head *rxq)  in ks8851_rx_pkts()  argument
251 	rxfc = (ks8851_rdreg16(ks, KS_RXFCTR) >> 8) & 0xff;  in ks8851_rx_pkts()
253 	netif_dbg(ks, rx_status, ks->netdev,  in ks8851_rx_pkts()
267 		rxstat = ks8851_rdreg16(ks, KS_RXFHSR);  in ks8851_rx_pkts()
268 		rxlen = ks8851_rdreg16(ks, KS_RXFHBCR) & RXFHBCR_CNT_MASK;  in ks8851_rx_pkts()
270 		netif_dbg(ks, rx_status, ks->netdev,  in ks8851_rx_pkts()
276 		ks8851_wrreg16(ks, KS_RXFDPR, RXFDPR_RXFPAI | 0x00);  in ks8851_rx_pkts()
279 		ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_SDA);  in ks8851_rx_pkts()
286 			skb = netdev_alloc_skb_ip_align(ks->netdev, rxalign);  in ks8851_rx_pkts()
297 				ks->rdfifo(ks, rxpkt, rxalign + 8);  in ks8851_rx_pkts()
299 				if (netif_msg_pktdata(ks))  in ks8851_rx_pkts()
300 					ks8851_dbg_dumpkkt(ks, rxpkt);  in ks8851_rx_pkts()
302 				skb->protocol = eth_type_trans(skb, ks->netdev);  in ks8851_rx_pkts()
305 				ks->netdev->stats.rx_packets++;  in ks8851_rx_pkts()
306 				ks->netdev->stats.rx_bytes += rxlen;  in ks8851_rx_pkts()
311 		ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr | RXQCR_RRXEF);  in ks8851_rx_pkts()
329 	struct ks8851_net *ks = _ks;  in ks8851_irq()  local
335 	ks8851_lock(ks, &flags);  in ks8851_irq()
337 	status = ks8851_rdreg16(ks, KS_ISR);  in ks8851_irq()
338 	ks8851_wrreg16(ks, KS_ISR, status);  in ks8851_irq()
340 	netif_dbg(ks, intr, ks->netdev,  in ks8851_irq()
344 		u16 pmecr = ks8851_rdreg16(ks, KS_PMECR);  in ks8851_irq()
346 		ks8851_wrreg16(ks, KS_PMECR, pmecr | PMECR_WKEVT_LINK);  in ks8851_irq()
350 		unsigned short tx_space = ks8851_rdreg16(ks, KS_TXMIR);  in ks8851_irq()
352 		netif_dbg(ks, intr, ks->netdev,  in ks8851_irq()
355 		spin_lock_bh(&ks->statelock);  in ks8851_irq()
356 		ks->tx_space = tx_space;  in ks8851_irq()
357 		if (netif_queue_stopped(ks->netdev))  in ks8851_irq()
358 			netif_wake_queue(ks->netdev);  in ks8851_irq()
359 		spin_unlock_bh(&ks->statelock);  in ks8851_irq()
363 		netdev_err(ks->netdev, "%s: spi bus error\n", __func__);  in ks8851_irq()
373 		ks8851_rx_pkts(ks, &rxq);  in ks8851_irq()
380 		struct ks8851_rxctrl *rxc = &ks->rxctrl;  in ks8851_irq()
383 		ks8851_wrreg16(ks, KS_MAHTR0, rxc->mchash[0]);  in ks8851_irq()
384 		ks8851_wrreg16(ks, KS_MAHTR1, rxc->mchash[1]);  in ks8851_irq()
385 		ks8851_wrreg16(ks, KS_MAHTR2, rxc->mchash[2]);  in ks8851_irq()
386 		ks8851_wrreg16(ks, KS_MAHTR3, rxc->mchash[3]);  in ks8851_irq()
388 		ks8851_wrreg16(ks, KS_RXCR2, rxc->rxcr2);  in ks8851_irq()
389 		ks8851_wrreg16(ks, KS_RXCR1, rxc->rxcr1);  in ks8851_irq()
392 	ks8851_unlock(ks, &flags);  in ks8851_irq()
395 		mii_check_link(&ks->mii);  in ks8851_irq()
406  * @ks: The device state
408 static void ks8851_flush_tx_work(struct ks8851_net *ks)  in ks8851_flush_tx_work()  argument
410 	if (ks->flush_tx_work)  in ks8851_flush_tx_work()
411 		ks->flush_tx_work(ks);  in ks8851_flush_tx_work()
423 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_net_open()  local
429 				   dev->name, ks);  in ks8851_net_open()
437 	ks8851_lock(ks, &flags);  in ks8851_net_open()
439 	netif_dbg(ks, ifup, ks->netdev, "opening\n");  in ks8851_net_open()
442 	ks8851_set_powermode(ks, PMECR_PM_NORMAL);  in ks8851_net_open()
446 	ks8851_soft_reset(ks, GRR_QMU);  in ks8851_net_open()
450 	ks8851_wrreg16(ks, KS_TXCR, (TXCR_TXE | /* enable transmit process */  in ks8851_net_open()
456 	ks8851_wrreg16(ks, KS_TXFDPR, TXFDPR_TXFPAI);  in ks8851_net_open()
460 	ks8851_wrreg16(ks, KS_RXCR1, (RXCR1_RXPAFMA | /*  from mac filter */  in ks8851_net_open()
467 	ks8851_wrreg16(ks, KS_RXCR2, RXCR2_SRDBL_FRAME);  in ks8851_net_open()
470 	ks8851_wrreg16(ks, KS_RXDTTR, 1000); /* 1ms after first frame to IRQ */  in ks8851_net_open()
471 	ks8851_wrreg16(ks, KS_RXDBCTR, 4096); /* >4Kbytes in buffer to IRQ */  in ks8851_net_open()
472 	ks8851_wrreg16(ks, KS_RXFCTR, 10);  /* 10 frames to IRQ */  in ks8851_net_open()
474 	ks->rc_rxqcr = (RXQCR_RXFCTE |  /* IRQ on frame count exceeded */  in ks8851_net_open()
478 	ks8851_wrreg16(ks, KS_RXQCR, ks->rc_rxqcr);  in ks8851_net_open()
481 	ks8851_wrreg16(ks, KS_ISR, ks->rc_ier);  in ks8851_net_open()
482 	ks8851_wrreg16(ks, KS_IER, ks->rc_ier);  in ks8851_net_open()
484 	ks->queued_len = 0;  in ks8851_net_open()
485 	ks->tx_space = ks8851_rdreg16(ks, KS_TXMIR);  in ks8851_net_open()
486 	netif_start_queue(ks->netdev);  in ks8851_net_open()
488 	netif_dbg(ks, ifup, ks->netdev, "network device up\n");  in ks8851_net_open()
490 	ks8851_unlock(ks, &flags);  in ks8851_net_open()
491 	mii_check_link(&ks->mii);  in ks8851_net_open()
505 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_net_stop()  local
508 	netif_info(ks, ifdown, dev, "shutting down\n");  in ks8851_net_stop()
512 	ks8851_lock(ks, &flags);  in ks8851_net_stop()
514 	ks8851_wrreg16(ks, KS_IER, 0x0000);  in ks8851_net_stop()
515 	ks8851_wrreg16(ks, KS_ISR, 0xffff);  in ks8851_net_stop()
516 	ks8851_unlock(ks, &flags);  in ks8851_net_stop()
519 	ks8851_flush_tx_work(ks);  in ks8851_net_stop()
520 	flush_work(&ks->rxctrl_work);  in ks8851_net_stop()
522 	ks8851_lock(ks, &flags);  in ks8851_net_stop()
524 	ks8851_wrreg16(ks, KS_RXCR1, 0x0000);  in ks8851_net_stop()
527 	ks8851_wrreg16(ks, KS_TXCR, 0x0000);  in ks8851_net_stop()
530 	ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN);  in ks8851_net_stop()
531 	ks8851_unlock(ks, &flags);  in ks8851_net_stop()
534 	while (!skb_queue_empty(&ks->txq)) {  in ks8851_net_stop()
535 		struct sk_buff *txb = skb_dequeue(&ks->txq);  in ks8851_net_stop()
537 		netif_dbg(ks, ifdown, ks->netdev,  in ks8851_net_stop()
543 	free_irq(dev->irq, ks);  in ks8851_net_stop()
564 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_start_xmit()  local
566 	return ks->start_xmit(skb, dev);  in ks8851_start_xmit()
584 	struct ks8851_net *ks = container_of(work, struct ks8851_net, rxctrl_work);  in ks8851_rxctrl_work()  local
587 	ks8851_lock(ks, &flags);  in ks8851_rxctrl_work()
590 	ks8851_wrreg16(ks, KS_RXCR1, 0x00);  in ks8851_rxctrl_work()
592 	ks8851_unlock(ks, &flags);  in ks8851_rxctrl_work()
597 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_set_rx_mode()  local
639 	spin_lock_bh(&ks->statelock);  in ks8851_set_rx_mode()
641 	if (memcmp(&rxctrl, &ks->rxctrl, sizeof(rxctrl)) != 0) {  in ks8851_set_rx_mode()
642 		memcpy(&ks->rxctrl, &rxctrl, sizeof(ks->rxctrl));  in ks8851_set_rx_mode()
643 		schedule_work(&ks->rxctrl_work);  in ks8851_set_rx_mode()
646 	spin_unlock_bh(&ks->statelock);  in ks8851_set_rx_mode()
665 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_net_ioctl()  local
670 	return generic_mii_ioctl(&ks->mii, if_mii(req), cmd, NULL);  in ks8851_net_ioctl()
695 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_get_msglevel()  local
696 	return ks->msg_enable;  in ks8851_get_msglevel()
701 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_set_msglevel()  local
702 	ks->msg_enable = to;  in ks8851_set_msglevel()
708 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_get_link_ksettings()  local
710 	mii_ethtool_get_link_ksettings(&ks->mii, cmd);  in ks8851_get_link_ksettings()
718 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_set_link_ksettings()  local
719 	return mii_ethtool_set_link_ksettings(&ks->mii, cmd);  in ks8851_set_link_ksettings()
724 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_get_link()  local
725 	return mii_link_ok(&ks->mii);  in ks8851_get_link()
730 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_nway_reset()  local
731 	return mii_nway_restart(&ks->mii);  in ks8851_nway_reset()
738 	struct ks8851_net *ks = ee->data;  in ks8851_eeprom_regread()  local
741 	val = ks8851_rdreg16(ks, KS_EEPCR);  in ks8851_eeprom_regread()
750 	struct ks8851_net *ks = ee->data;  in ks8851_eeprom_regwrite()  local
762 	ks8851_wrreg16(ks, KS_EEPCR, val);  in ks8851_eeprom_regwrite()
767  * @ks: The network device state.
772 static int ks8851_eeprom_claim(struct ks8851_net *ks)  in ks8851_eeprom_claim()  argument
775 	ks8851_wrreg16(ks, KS_EEPCR, EEPCR_EESA | EEPCR_EECS);  in ks8851_eeprom_claim()
781  * @ks: The device state
785 static void ks8851_eeprom_release(struct ks8851_net *ks)  in ks8851_eeprom_release()  argument
787 	unsigned val = ks8851_rdreg16(ks, KS_EEPCR);  in ks8851_eeprom_release()
789 	ks8851_wrreg16(ks, KS_EEPCR, val & ~EEPCR_EESA);  in ks8851_eeprom_release()
797 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_set_eeprom()  local
810 	if (!(ks->rc_ccr & CCR_EEPROM))  in ks8851_set_eeprom()
813 	ks8851_lock(ks, &flags);  in ks8851_set_eeprom()
815 	ks8851_eeprom_claim(ks);  in ks8851_set_eeprom()
817 	eeprom_93cx6_wren(&ks->eeprom, true);  in ks8851_set_eeprom()
822 	eeprom_93cx6_read(&ks->eeprom, offset/2, &tmp);  in ks8851_set_eeprom()
832 	eeprom_93cx6_write(&ks->eeprom, offset/2, tmp);  in ks8851_set_eeprom()
833 	eeprom_93cx6_wren(&ks->eeprom, false);  in ks8851_set_eeprom()
835 	ks8851_eeprom_release(ks);  in ks8851_set_eeprom()
836 	ks8851_unlock(ks, &flags);  in ks8851_set_eeprom()
844 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_get_eeprom()  local
853 	if (!(ks->rc_ccr & CCR_EEPROM))  in ks8851_get_eeprom()
856 	ks8851_lock(ks, &flags);  in ks8851_get_eeprom()
858 	ks8851_eeprom_claim(ks);  in ks8851_get_eeprom()
862 	eeprom_93cx6_multiread(&ks->eeprom, offset/2, (__le16 *)data, len/2);  in ks8851_get_eeprom()
863 	ks8851_eeprom_release(ks);  in ks8851_get_eeprom()
864 	ks8851_unlock(ks, &flags);  in ks8851_get_eeprom()
871 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_get_eeprom_len()  local
874 	return ks->rc_ccr & CCR_EEPROM ? 128 : 0;  in ks8851_get_eeprom_len()
922 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_phy_read_common()  local
931 	ks8851_lock(ks, &flags);  in ks8851_phy_read_common()
932 	result = ks8851_rdreg16(ks, ksreg);  in ks8851_phy_read_common()
933 	ks8851_unlock(ks, &flags);  in ks8851_phy_read_common()
967 	struct ks8851_net *ks = netdev_priv(dev);  in ks8851_phy_write()  local
973 		ks8851_lock(ks, &flags);  in ks8851_phy_write()
974 		ks8851_wrreg16(ks, ksreg, value);  in ks8851_phy_write()
975 		ks8851_unlock(ks, &flags);  in ks8851_phy_write()
981 	struct ks8851_net *ks = bus->priv;  in ks8851_mdio_read()  local
992 	return ks8851_phy_read_common(ks->netdev, phy_id, reg);  in ks8851_mdio_read()
997 	struct ks8851_net *ks = bus->priv;  in ks8851_mdio_write()  local
999 	ks8851_phy_write(ks->netdev, phy_id, reg, val);  in ks8851_mdio_write()
1005  * @ks: The device state
1009 static void ks8851_read_selftest(struct ks8851_net *ks)  in ks8851_read_selftest()  argument
1014 	rd = ks8851_rdreg16(ks, KS_MBIR);  in ks8851_read_selftest()
1017 		netdev_warn(ks->netdev, "Memory selftest not finished\n");  in ks8851_read_selftest()
1022 		netdev_err(ks->netdev, "TX memory selftest fail\n");  in ks8851_read_selftest()
1025 		netdev_err(ks->netdev, "RX memory selftest fail\n");  in ks8851_read_selftest()
1034 	struct ks8851_net *ks = dev_get_drvdata(dev);  in ks8851_suspend()  local
1035 	struct net_device *netdev = ks->netdev;  in ks8851_suspend()
1048 	struct ks8851_net *ks = dev_get_drvdata(dev);  in ks8851_resume()  local
1049 	struct net_device *netdev = ks->netdev;  in ks8851_resume()
1061 static int ks8851_register_mdiobus(struct ks8851_net *ks, struct device *dev)  in ks8851_register_mdiobus()  argument
1073 	mii_bus->priv = ks;  in ks8851_register_mdiobus()
1082 	ks->mii_bus = mii_bus;  in ks8851_register_mdiobus()
1091 static void ks8851_unregister_mdiobus(struct ks8851_net *ks)  in ks8851_unregister_mdiobus()  argument
1093 	mdiobus_unregister(ks->mii_bus);  in ks8851_unregister_mdiobus()
1094 	mdiobus_free(ks->mii_bus);  in ks8851_unregister_mdiobus()
1100 	struct ks8851_net *ks = netdev_priv(netdev);  in ks8851_probe_common()  local
1104 	ks->netdev = netdev;  in ks8851_probe_common()
1106 	ks->gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in ks8851_probe_common()
1107 	ret = PTR_ERR_OR_ZERO(ks->gpio);  in ks8851_probe_common()
1114 	ret = gpiod_set_consumer_name(ks->gpio, "ks8851_rst_n");  in ks8851_probe_common()
1120 	ks->vdd_io = devm_regulator_get(dev, "vdd-io");  in ks8851_probe_common()
1121 	if (IS_ERR(ks->vdd_io)) {  in ks8851_probe_common()
1122 		ret = PTR_ERR(ks->vdd_io);  in ks8851_probe_common()
1126 	ret = regulator_enable(ks->vdd_io);  in ks8851_probe_common()
1132 	ks->vdd_reg = devm_regulator_get(dev, "vdd");  in ks8851_probe_common()
1133 	if (IS_ERR(ks->vdd_reg)) {  in ks8851_probe_common()
1134 		ret = PTR_ERR(ks->vdd_reg);  in ks8851_probe_common()
1138 	ret = regulator_enable(ks->vdd_reg);  in ks8851_probe_common()
1144 	if (ks->gpio) {  in ks8851_probe_common()
1146 		gpiod_set_value_cansleep(ks->gpio, 0);  in ks8851_probe_common()
1149 	spin_lock_init(&ks->statelock);  in ks8851_probe_common()
1151 	INIT_WORK(&ks->rxctrl_work, ks8851_rxctrl_work);  in ks8851_probe_common()
1156 	ks->eeprom.data = ks;  in ks8851_probe_common()
1157 	ks->eeprom.width = PCI_EEPROM_WIDTH_93C46;  in ks8851_probe_common()
1158 	ks->eeprom.register_read = ks8851_eeprom_regread;  in ks8851_probe_common()
1159 	ks->eeprom.register_write = ks8851_eeprom_regwrite;  in ks8851_probe_common()
1162 	ks->mii.dev		= netdev;  in ks8851_probe_common()
1163 	ks->mii.phy_id		= 1;  in ks8851_probe_common()
1164 	ks->mii.phy_id_mask	= 1;  in ks8851_probe_common()
1165 	ks->mii.reg_num_mask	= 0xf;  in ks8851_probe_common()
1166 	ks->mii.mdio_read	= ks8851_phy_read;  in ks8851_probe_common()
1167 	ks->mii.mdio_write	= ks8851_phy_write;  in ks8851_probe_common()
1171 	ret = ks8851_register_mdiobus(ks, dev);  in ks8851_probe_common()
1176 	ks->msg_enable = netif_msg_init(msg_en, NETIF_MSG_DRV |  in ks8851_probe_common()
1180 	skb_queue_head_init(&ks->txq);  in ks8851_probe_common()
1184 	dev_set_drvdata(dev, ks);  in ks8851_probe_common()
1186 	netif_carrier_off(ks->netdev);  in ks8851_probe_common()
1191 	ks8851_soft_reset(ks, GRR_GSR);  in ks8851_probe_common()
1194 	cider = ks8851_rdreg16(ks, KS_CIDER);  in ks8851_probe_common()
1202 	ks->rc_ccr = ks8851_rdreg16(ks, KS_CCR);  in ks8851_probe_common()
1204 	ks8851_read_selftest(ks);  in ks8851_probe_common()
1205 	ks8851_init_mac(ks, dev->of_node);  in ks8851_probe_common()
1215 		    ks->rc_ccr & CCR_EEPROM ? "has" : "no");  in ks8851_probe_common()
1220 	ks8851_unregister_mdiobus(ks);  in ks8851_probe_common()
1222 	if (ks->gpio)  in ks8851_probe_common()
1223 		gpiod_set_value_cansleep(ks->gpio, 1);  in ks8851_probe_common()
1224 	regulator_disable(ks->vdd_reg);  in ks8851_probe_common()
1226 	regulator_disable(ks->vdd_io);  in ks8851_probe_common()