Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 279 insertions, 0 deletions

diff --git a/drivers/net/ethernet/atheros/atlx/atlx.c b/drivers/net/ethernet/atheros/atlx/atlx.c
new file mode 100644
index 000000000..46a622cce
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atlx/atlx.c
@@ -0,0 +1,279 @@
+/* atlx.c -- common functions for Attansic network drivers
+ *
+ * Copyright(c) 2005 - 2006 Attansic Corporation. All rights reserved.
+ * Copyright(c) 2006 - 2007 Chris Snook <csnook@redhat.com>
+ * Copyright(c) 2006 - 2008 Jay Cliburn <jcliburn@gmail.com>
+ * Copyright(c) 2007 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/* Including this file like a header is a temporary hack, I promise. -- CHS */
+#ifndef ATLX_C
+#define ATLX_C
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/workqueue.h>
+
+#include "atlx.h"
+
+static s32 atlx_read_phy_reg(struct atl1_hw *hw, u16 reg_addr, u16 *phy_data);
+static u32 atlx_hash_mc_addr(struct atl1_hw *hw, u8 *mc_addr);
+static void atlx_set_mac_addr(struct atl1_hw *hw);
+
+static struct atlx_spi_flash_dev flash_table[] = {
+/*	MFR_NAME  WRSR  READ  PRGM  WREN  WRDI  RDSR  RDID  SEC_ERS CHIP_ERS */
+	{"Atmel", 0x00, 0x03, 0x02, 0x06, 0x04, 0x05, 0x15, 0x52,   0x62},
+	{"SST",   0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0x90, 0x20,   0x60},
+	{"ST",    0x01, 0x03, 0x02, 0x06, 0x04, 0x05, 0xAB, 0xD8,   0xC7},
+};
+
+static int atlx_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	case SIOCGMIIPHY:
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		return atlx_mii_ioctl(netdev, ifr, cmd);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+/**
+ * atlx_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int atlx_set_mac(struct net_device *netdev, void *p)
+{
+	struct atlx_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+
+	if (netif_running(netdev))
+		return -EBUSY;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
+
+	atlx_set_mac_addr(&adapter->hw);
+	return 0;
+}
+
+static void atlx_check_for_link(struct atlx_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	u16 phy_data = 0;
+
+	spin_lock(&adapter->lock);
+	adapter->phy_timer_pending = false;
+	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+	atlx_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
+	spin_unlock(&adapter->lock);
+
+	/* notify upper layer link down ASAP */
+	if (!(phy_data & BMSR_LSTATUS)) {
+		/* Link Down */
+		if (netif_carrier_ok(netdev)) {
+			/* old link state: Up */
+			dev_info(&adapter->pdev->dev, "%s link is down\n",
+				netdev->name);
+			adapter->link_speed = SPEED_0;
+			netif_carrier_off(netdev);
+		}
+	}
+	schedule_work(&adapter->link_chg_task);
+}
+
+/**
+ * atlx_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated.  This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ */
+static void atlx_set_multi(struct net_device *netdev)
+{
+	struct atlx_adapter *adapter = netdev_priv(netdev);
+	struct atlx_hw *hw = &adapter->hw;
+	struct netdev_hw_addr *ha;
+	u32 rctl;
+	u32 hash_value;
+
+	/* Check for Promiscuous and All Multicast modes */
+	rctl = ioread32(hw->hw_addr + REG_MAC_CTRL);
+	if (netdev->flags & IFF_PROMISC)
+		rctl |= MAC_CTRL_PROMIS_EN;
+	else if (netdev->flags & IFF_ALLMULTI) {
+		rctl |= MAC_CTRL_MC_ALL_EN;
+		rctl &= ~MAC_CTRL_PROMIS_EN;
+	} else
+		rctl &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
+
+	iowrite32(rctl, hw->hw_addr + REG_MAC_CTRL);
+
+	/* clear the old settings from the multicast hash table */
+	iowrite32(0, hw->hw_addr + REG_RX_HASH_TABLE);
+	iowrite32(0, (hw->hw_addr + REG_RX_HASH_TABLE) + (1 << 2));
+
+	/* compute mc addresses' hash value ,and put it into hash table */
+	netdev_for_each_mc_addr(ha, netdev) {
+		hash_value = atlx_hash_mc_addr(hw, ha->addr);
+		atlx_hash_set(hw, hash_value);
+	}
+}
+
+static inline void atlx_imr_set(struct atlx_adapter *adapter,
+				unsigned int imr)
+{
+	iowrite32(imr, adapter->hw.hw_addr + REG_IMR);
+	ioread32(adapter->hw.hw_addr + REG_IMR);
+}
+
+/**
+ * atlx_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ */
+static void atlx_irq_enable(struct atlx_adapter *adapter)
+{
+	atlx_imr_set(adapter, IMR_NORMAL_MASK);
+	adapter->int_enabled = true;
+}
+
+/**
+ * atlx_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ */
+static void atlx_irq_disable(struct atlx_adapter *adapter)
+{
+	adapter->int_enabled = false;
+	atlx_imr_set(adapter, 0);
+	synchronize_irq(adapter->pdev->irq);
+}
+
+static void atlx_clear_phy_int(struct atlx_adapter *adapter)
+{
+	u16 phy_data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->lock, flags);
+	atlx_read_phy_reg(&adapter->hw, 19, &phy_data);
+	spin_unlock_irqrestore(&adapter->lock, flags);
+}
+
+/**
+ * atlx_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ */
+static void atlx_tx_timeout(struct net_device *netdev)
+{
+	struct atlx_adapter *adapter = netdev_priv(netdev);
+	/* Do the reset outside of interrupt context */
+	schedule_work(&adapter->reset_dev_task);
+}
+
+/*
+ * atlx_link_chg_task - deal with link change event Out of interrupt context
+ */
+static void atlx_link_chg_task(struct work_struct *work)
+{
+	struct atlx_adapter *adapter;
+	unsigned long flags;
+
+	adapter = container_of(work, struct atlx_adapter, link_chg_task);
+
+	spin_lock_irqsave(&adapter->lock, flags);
+	atlx_check_link(adapter);
+	spin_unlock_irqrestore(&adapter->lock, flags);
+}
+
+static void __atlx_vlan_mode(netdev_features_t features, u32 *ctrl)
+{
+	if (features & NETIF_F_HW_VLAN_CTAG_RX) {
+		/* enable VLAN tag insert/strip */
+		*ctrl |= MAC_CTRL_RMV_VLAN;
+	} else {
+		/* disable VLAN tag insert/strip */
+		*ctrl &= ~MAC_CTRL_RMV_VLAN;
+	}
+}
+
+static void atlx_vlan_mode(struct net_device *netdev,
+	netdev_features_t features)
+{
+	struct atlx_adapter *adapter = netdev_priv(netdev);
+	unsigned long flags;
+	u32 ctrl;
+
+	spin_lock_irqsave(&adapter->lock, flags);
+	/* atlx_irq_disable(adapter); FIXME: confirm/remove */
+	ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
+	__atlx_vlan_mode(features, &ctrl);
+	iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
+	/* atlx_irq_enable(adapter); FIXME */
+	spin_unlock_irqrestore(&adapter->lock, flags);
+}
+
+static void atlx_restore_vlan(struct atlx_adapter *adapter)
+{
+	atlx_vlan_mode(adapter->netdev, adapter->netdev->features);
+}
+
+static netdev_features_t atlx_fix_features(struct net_device *netdev,
+	netdev_features_t features)
+{
+	/*
+	 * Since there is no support for separate rx/tx vlan accel
+	 * enable/disable make sure tx flag is always in same state as rx.
+	 */
+	if (features & NETIF_F_HW_VLAN_CTAG_RX)
+		features |= NETIF_F_HW_VLAN_CTAG_TX;
+	else
+		features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+
+	return features;
+}
+
+static int atlx_set_features(struct net_device *netdev,
+	netdev_features_t features)
+{
+	netdev_features_t changed = netdev->features ^ features;
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
+		atlx_vlan_mode(netdev, features);
+
+	return 0;
+}
+
+#endif /* ATLX_C */