1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* atlx.c -- common functions for Attansic network drivers
4  * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
5  * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
6  * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
10  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
13 /* Including this file like a header is a temporary hack, I promise. -- CHS */
17 #include <linux/device.h>
31 static s32 atlx_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data);
32 static u32 atlx_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr);
33 static void atlx_set_mac_addr(struct atl1_hw *hw);
50 		return -EOPNOTSUPP;  in atlx_ioctl()
55  * atlx_set_mac - Change the Ethernet Address of the NIC
56  * @netdev: network interface device structure
57  * @p: pointer to an address structure
67 		return -EBUSY;  in atlx_set_mac()
69 	if (!is_valid_ether_addr(addr->sa_data))  in atlx_set_mac()
70 		return -EADDRNOTAVAIL;  in atlx_set_mac()
72 	eth_hw_addr_set(netdev, addr->sa_data);  in atlx_set_mac()
73 	memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);  in atlx_set_mac()
75 	atlx_set_mac_addr(&adapter->hw);  in atlx_set_mac()
81 	struct net_device *netdev = adapter->netdev;  in atlx_check_for_link()
84 	spin_lock(&adapter->lock);  in atlx_check_for_link()
85 	adapter->phy_timer_pending = false;  in atlx_check_for_link()
86 	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);  in atlx_check_for_link()
87 	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);  in atlx_check_for_link()
88 	spin_unlock(&adapter->lock);  in atlx_check_for_link()
95 			dev_info(&adapter->pdev->dev, "%s link is down\n",  in atlx_check_for_link()
96 				netdev->name);  in atlx_check_for_link()
97 			adapter->link_speed = SPEED_0;  in atlx_check_for_link()
101 	schedule_work(&adapter->link_chg_task);  in atlx_check_for_link()
105  * atlx_set_multi - Multicast and Promiscuous mode set
106  * @netdev: network interface device structure
108  * The set_multi entry point is called whenever the multicast address
111  * promiscuous mode, and all-multi behavior.
116 	struct atlx_hw *hw = &adapter->hw;  in atlx_set_multi()  local
122 	rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);  in atlx_set_multi()
123 	if (netdev->flags & IFF_PROMISC)  in atlx_set_multi()
125 	else if (netdev->flags & IFF_ALLMULTI) {  in atlx_set_multi()
131 	iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);  in atlx_set_multi()
134 	iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);  in atlx_set_multi()
135 	iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));  in atlx_set_multi()
139 		hash_value = atlx_hash_mc_addr(hw, ha->addr);  in atlx_set_multi()
140 		atlx_hash_set(hw, hash_value);  in atlx_set_multi()
147 	iowrite32(imr, adapter->hw.hw_addr + REG_IMR);  in atlx_imr_set()
148 	ioread32(adapter->hw.hw_addr + REG_IMR);  in atlx_imr_set()
152  * atlx_irq_enable - Enable default interrupt generation settings
158 	adapter->int_enabled = true;  in atlx_irq_enable()
162  * atlx_irq_disable - Mask off interrupt generation on the NIC
167 	adapter->int_enabled = false;  in atlx_irq_disable()
169 	synchronize_irq(adapter->pdev->irq);  in atlx_irq_disable()
177 	spin_lock_irqsave(&adapter->lock, flags);  in atlx_clear_phy_int()
178 	atlx_read_phy_reg(&adapter->hw, 19, &phy_data);  in atlx_clear_phy_int()
179 	spin_unlock_irqrestore(&adapter->lock, flags);  in atlx_clear_phy_int()
183  * atlx_tx_timeout - Respond to a Tx Hang
184  * @netdev: network interface device structure
190 	schedule_work(&adapter->reset_dev_task);  in atlx_tx_timeout()
194  * atlx_link_chg_task - deal with link change event Out of interrupt context
203 	spin_lock_irqsave(&adapter->lock, flags);  in atlx_link_chg_task()
205 	spin_unlock_irqrestore(&adapter->lock, flags);  in atlx_link_chg_task()
226 	spin_lock_irqsave(&adapter->lock, flags);  in atlx_vlan_mode()
228 	ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);  in atlx_vlan_mode()
230 	iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);  in atlx_vlan_mode()
232 	spin_unlock_irqrestore(&adapter->lock, flags);  in atlx_vlan_mode()
237 	atlx_vlan_mode(adapter->netdev, adapter->netdev->features);  in atlx_restore_vlan()
258 	netdev_features_t changed = netdev->features ^ features;  in atlx_set_features()