summaryrefslogtreecommitdiffstats
path: root/drivers/net/atlx/atlx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/atlx/atlx.c')
-rw-r--r--drivers/net/atlx/atlx.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/drivers/net/atlx/atlx.c b/drivers/net/atlx/atlx.c
new file mode 100644
index 0000000..4186326
--- /dev/null
+++ b/drivers/net/atlx/atlx.c
@@ -0,0 +1,433 @@
+/* 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 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 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);
+ netif_stop_queue(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 dev_mc_list *mc_ptr;
+ 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 */
+ for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
+ hash_value = atlx_hash_mc_addr(hw, mc_ptr->dmi_addr);
+ atlx_hash_set(hw, hash_value);
+ }
+}
+
+/*
+ * atlx_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ */
+static void atlx_irq_enable(struct atlx_adapter *adapter)
+{
+ iowrite32(IMR_NORMAL_MASK, adapter->hw.hw_addr + REG_IMR);
+ ioread32(adapter->hw.hw_addr + REG_IMR);
+}
+
+/*
+ * atlx_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ */
+static void atlx_irq_disable(struct atlx_adapter *adapter)
+{
+ iowrite32(0, adapter->hw.hw_addr + REG_IMR);
+ ioread32(adapter->hw.hw_addr + REG_IMR);
+ 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_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ *
+ * Returns the address of the device statistics structure.
+ * The statistics are actually updated from the timer callback.
+ */
+static struct net_device_stats *atlx_get_stats(struct net_device *netdev)
+{
+ struct atlx_adapter *adapter = netdev_priv(netdev);
+ return &adapter->net_stats;
+}
+
+/*
+ * 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->tx_timeout_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_rx_register(struct net_device *netdev,
+ struct vlan_group *grp)
+{
+ 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 */
+ adapter->vlgrp = grp;
+
+ if (grp) {
+ /* enable VLAN tag insert/strip */
+ ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
+ ctrl |= MAC_CTRL_RMV_VLAN;
+ iowrite32(ctrl, adapter->hw.hw_addr + REG_MAC_CTRL);
+ } else {
+ /* disable VLAN tag insert/strip */
+ ctrl = ioread32(adapter->hw.hw_addr + REG_MAC_CTRL);
+ ctrl &= ~MAC_CTRL_RMV_VLAN;
+ 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_rx_register(adapter->netdev, adapter->vlgrp);
+}
+
+/*
+ * This is the only thing that needs to be changed to adjust the
+ * maximum number of ports that the driver can manage.
+ */
+#define ATL1_MAX_NIC 4
+
+#define OPTION_UNSET -1
+#define OPTION_DISABLED 0
+#define OPTION_ENABLED 1
+
+#define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
+
+/*
+ * Interrupt Moderate Timer in units of 2 us
+ *
+ * Valid Range: 10-65535
+ *
+ * Default Value: 100 (200us)
+ */
+static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
+static int num_int_mod_timer;
+module_param_array_named(int_mod_timer, int_mod_timer, int,
+ &num_int_mod_timer, 0);
+MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
+
+/*
+ * flash_vendor
+ *
+ * Valid Range: 0-2
+ *
+ * 0 - Atmel
+ * 1 - SST
+ * 2 - ST
+ *
+ * Default Value: 0
+ */
+static int __devinitdata flash_vendor[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
+static int num_flash_vendor;
+module_param_array_named(flash_vendor, flash_vendor, int, &num_flash_vendor, 0);
+MODULE_PARM_DESC(flash_vendor, "SPI flash vendor");
+
+#define DEFAULT_INT_MOD_CNT 100 /* 200us */
+#define MAX_INT_MOD_CNT 65000
+#define MIN_INT_MOD_CNT 50
+
+#define FLASH_VENDOR_DEFAULT 0
+#define FLASH_VENDOR_MIN 0
+#define FLASH_VENDOR_MAX 2
+
+struct atl1_option {
+ enum { enable_option, range_option, list_option } type;
+ char *name;
+ char *err;
+ int def;
+ union {
+ struct { /* range_option info */
+ int min;
+ int max;
+ } r;
+ struct { /* list_option info */
+ int nr;
+ struct atl1_opt_list {
+ int i;
+ char *str;
+ } *p;
+ } l;
+ } arg;
+};
+
+static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
+ struct pci_dev *pdev)
+{
+ if (*value == OPTION_UNSET) {
+ *value = opt->def;
+ return 0;
+ }
+
+ switch (opt->type) {
+ case enable_option:
+ switch (*value) {
+ case OPTION_ENABLED:
+ dev_info(&pdev->dev, "%s enabled\n", opt->name);
+ return 0;
+ case OPTION_DISABLED:
+ dev_info(&pdev->dev, "%s disabled\n", opt->name);
+ return 0;
+ }
+ break;
+ case range_option:
+ if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
+ dev_info(&pdev->dev, "%s set to %i\n", opt->name,
+ *value);
+ return 0;
+ }
+ break;
+ case list_option:{
+ int i;
+ struct atl1_opt_list *ent;
+
+ for (i = 0; i < opt->arg.l.nr; i++) {
+ ent = &opt->arg.l.p[i];
+ if (*value == ent->i) {
+ if (ent->str[0] != '\0')
+ dev_info(&pdev->dev, "%s\n",
+ ent->str);
+ return 0;
+ }
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
+ opt->name, *value, opt->err);
+ *value = opt->def;
+ return -1;
+}
+
+/*
+ * atl1_check_options - Range Checking for Command Line Parameters
+ * @adapter: board private structure
+ *
+ * This routine checks all command line parameters for valid user
+ * input. If an invalid value is given, or if no user specified
+ * value exists, a default value is used. The final value is stored
+ * in a variable in the adapter structure.
+ */
+void __devinit atl1_check_options(struct atl1_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int bd = adapter->bd_number;
+ if (bd >= ATL1_MAX_NIC) {
+ dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
+ dev_notice(&pdev->dev, "using defaults for all values\n");
+ }
+ { /* Interrupt Moderate Timer */
+ struct atl1_option opt = {
+ .type = range_option,
+ .name = "Interrupt Moderator Timer",
+ .err = "using default of "
+ __MODULE_STRING(DEFAULT_INT_MOD_CNT),
+ .def = DEFAULT_INT_MOD_CNT,
+ .arg = {.r = {.min = MIN_INT_MOD_CNT,
+ .max = MAX_INT_MOD_CNT} }
+ };
+ int val;
+ if (num_int_mod_timer > bd) {
+ val = int_mod_timer[bd];
+ atl1_validate_option(&val, &opt, pdev);
+ adapter->imt = (u16) val;
+ } else
+ adapter->imt = (u16) (opt.def);
+ }
+
+ { /* Flash Vendor */
+ struct atl1_option opt = {
+ .type = range_option,
+ .name = "SPI Flash Vendor",
+ .err = "using default of "
+ __MODULE_STRING(FLASH_VENDOR_DEFAULT),
+ .def = DEFAULT_INT_MOD_CNT,
+ .arg = {.r = {.min = FLASH_VENDOR_MIN,
+ .max = FLASH_VENDOR_MAX} }
+ };
+ int val;
+ if (num_flash_vendor > bd) {
+ val = flash_vendor[bd];
+ atl1_validate_option(&val, &opt, pdev);
+ adapter->hw.flash_vendor = (u8) val;
+ } else
+ adapter->hw.flash_vendor = (u8) (opt.def);
+ }
+}
+
+#endif /* ATLX_C */
OpenPOWER on IntegriCloud