1 /* atlx.c -- common functions for Attansic network drivers
3 * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
4 * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
5 * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
6 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
8 * Derived from Intel e1000 driver
9 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
16 * This program is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
21 * You should have received a copy of the GNU General Public License along with
22 * this program; if not, write to the Free Software Foundation, Inc., 59
23 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 /* Including this file like a header is a temporary hack, I promise. -- CHS */
30 #include <linux/device.h>
31 #include <linux/errno.h>
32 #include <linux/etherdevice.h>
34 #include <linux/netdevice.h>
35 #include <linux/socket.h>
36 #include <linux/sockios.h>
37 #include <linux/spinlock.h>
38 #include <linux/string.h>
39 #include <linux/types.h>
40 #include <linux/workqueue.h>
44 static struct atlx_spi_flash_dev flash_table[] = {
45 /* MFR_NAME WRSR READ PRGM WREN WRDI RDSR RDID SEC_ERS CHIP_ERS */
46 {"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52, 0x62},
47 {"SST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20, 0x60},
48 {"ST", 0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8, 0xC7},
51 static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
57 return atlx_mii_ioctl(netdev, ifr, cmd);
64 * atlx_set_mac - Change the Ethernet Address of the NIC
65 * @netdev: network interface device structure
66 * @p: pointer to an address structure
68 * Returns 0 on success, negative on failure
70 static int atlx_set_mac(struct net_device *netdev, void *p)
72 struct atlx_adapter *adapter = netdev_priv(netdev);
73 struct sockaddr *addr = p;
75 if (netif_running(netdev))
78 if (!is_valid_ether_addr(addr->sa_data))
79 return -EADDRNOTAVAIL;
81 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
82 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
84 atlx_set_mac_addr(&adapter->hw);
88 static void atlx_check_for_link(struct atlx_adapter *adapter)
90 struct net_device *netdev = adapter->netdev;
93 spin_lock(&adapter->lock);
94 adapter->phy_timer_pending = false;
95 atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
96 atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
97 spin_unlock(&adapter->lock);
99 /* notify upper layer link down ASAP */
100 if (!(phy_data & BMSR_LSTATUS)) {
102 if (netif_carrier_ok(netdev)) {
103 /* old link state: Up */
104 dev_info(&adapter->pdev->dev, "%s link is down\n",
106 adapter->link_speed = SPEED_0;
107 netif_carrier_off(netdev);
110 schedule_work(&adapter->link_chg_task);
114 * atlx_set_multi - Multicast and Promiscuous mode set
115 * @netdev: network interface device structure
117 * The set_multi entry point is called whenever the multicast address
118 * list or the network interface flags are updated. This routine is
119 * responsible for configuring the hardware for proper multicast,
120 * promiscuous mode, and all-multi behavior.
122 static void atlx_set_multi(struct net_device *netdev)
124 struct atlx_adapter *adapter = netdev_priv(netdev);
125 struct atlx_hw *hw = &adapter->hw;
126 struct dev_mc_list *mc_ptr;
130 /* Check for Promiscuous and All Multicast modes */
131 rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
132 if (netdev->flags & IFF_PROMISC)
133 rctl |= MAC_CTRL_PROMIS_EN;
134 else if (netdev->flags & IFF_ALLMULTI) {
135 rctl |= MAC_CTRL_MC_ALL_EN;
136 rctl &= ~MAC_CTRL_PROMIS_EN;
138 rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
140 iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
142 /* clear the old settings from the multicast hash table */
143 iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
144 iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
146 /* compute mc addresses' hash value ,and put it into hash table */
147 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
148 hash_value = atlx_hash_mc_addr(hw, mc_ptr->dmi_addr);
149 atlx_hash_set(hw, hash_value);
154 * atlx_irq_enable - Enable default interrupt generation settings
155 * @adapter: board private structure
157 static void atlx_irq_enable(struct atlx_adapter *adapter)
159 iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
160 ioread32(adapter->hw.hw_addr + REG_IMR);
164 * atlx_irq_disable - Mask off interrupt generation on the NIC
165 * @adapter: board private structure
167 static void atlx_irq_disable(struct atlx_adapter *adapter)
169 iowrite32(0, adapter->hw.hw_addr + REG_IMR);
170 ioread32(adapter->hw.hw_addr + REG_IMR);
171 synchronize_irq(adapter->pdev->irq);
174 static void atlx_clear_phy_int(struct atlx_adapter *adapter)
179 spin_lock_irqsave(&adapter->lock, flags);
180 atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
181 spin_unlock_irqrestore(&adapter->lock, flags);
185 * atlx_get_stats - Get System Network Statistics
186 * @netdev: network interface device structure
188 * Returns the address of the device statistics structure.
189 * The statistics are actually updated from the timer callback.
191 static struct net_device_stats *atlx_get_stats(struct net_device *netdev)
193 struct atlx_adapter *adapter = netdev_priv(netdev);
194 return &adapter->net_stats;
198 * atlx_tx_timeout - Respond to a Tx Hang
199 * @netdev: network interface device structure
201 static void atlx_tx_timeout(struct net_device *netdev)
203 struct atlx_adapter *adapter = netdev_priv(netdev);
204 /* Do the reset outside of interrupt context */
205 schedule_work(&adapter->tx_timeout_task);
209 * atlx_link_chg_task - deal with link change event Out of interrupt context
211 static void atlx_link_chg_task(struct work_struct *work)
213 struct atlx_adapter *adapter;
216 adapter = container_of(work, struct atlx_adapter, link_chg_task);
218 spin_lock_irqsave(&adapter->lock, flags);
219 atlx_check_link(adapter);
220 spin_unlock_irqrestore(&adapter->lock, flags);
223 static void atlx_vlan_rx_register(struct net_device *netdev,
224 struct vlan_group *grp)
226 struct atlx_adapter *adapter = netdev_priv(netdev);
230 spin_lock_irqsave(&adapter->lock, flags);
231 /* atlx_irq_disable(adapter); FIXME: confirm/remove */
232 adapter->vlgrp = grp;
235 /* enable VLAN tag insert/strip */
236 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
237 ctrl |= MAC_CTRL_RMV_VLAN;
238 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
240 /* disable VLAN tag insert/strip */
241 ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
242 ctrl &= ~MAC_CTRL_RMV_VLAN;
243 iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
246 /* atlx_irq_enable(adapter); FIXME */
247 spin_unlock_irqrestore(&adapter->lock, flags);
250 static void atlx_restore_vlan(struct atlx_adapter *adapter)
252 atlx_vlan_rx_register(adapter->netdev, adapter->vlgrp);