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 000000000000..4186326d1b94
--- /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 */