[PATCH 2.6.18-rc7 1/9] NetXen: Makefile and driver main file

Amit S. Kale
2006-09-15T18:39:08Z

diff -Narup -X linux-2.6.18-rc7.orig/Documentation/dontdiff linux-2.6.18-rc7.orig/MAINTAINERS linux-2.6.18-rc7/MAINTAINERS
--- linux-2.6.18-rc7.orig/MAINTAINERS 2006-09-15 09:27:56.000000000 -0700
+++ linux-2.6.18-rc7/MAINTAINERS 2006-09-15 09:32:05.000000000 -0700
@@ -2060,6 +2060,13 @@ L: netdev@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/linville/wireless-2.6.git
S: Maintained

+NETXEN (1/10) GbE SUPPORT
+P: Amit S. Kale
+M: amitkale@netxen.com
+L: netdev@vger.kernel.org
+W: http://www.netxen.com
+S: Supported
+
IPVS
P: Wensong Zhang
M: wensong@linux-vs.org
diff -Narup -X linux-2.6.18-rc7.orig/Documentation/dontdiff linux-2.6.18-rc7.orig/drivers/net/Kconfig linux-2.6.18-rc7/drivers/net/Kconfig
--- linux-2.6.18-rc7.orig/drivers/net/Kconfig 2006-09-15 09:27:55.000000000 -0700
+++ linux-2.6.18-rc7/drivers/net/Kconfig 2006-09-15 09:33:43.000000000 -0700
@@ -2399,6 +2399,11 @@ config MYRI10GE
<file:Documentation/networking/net-modules.txt>. The module
will be called myri10ge.

+config NETXEN_NIC
+ tristate "NetXen Multi port (1/10) Gigabit Ethernet NIC"
+ help
+ This enables the support for NetXen's Gigabit Ethernet card.
+
endmenu

source "drivers/net/tokenring/Kconfig"
diff -Narup -X linux-2.6.18-rc7.orig/Documentation/dontdiff linux-2.6.18-rc7.orig/drivers/net/Makefile linux-2.6.18-rc7/drivers/net/Makefile
--- linux-2.6.18-rc7.orig/drivers/net/Makefile 2006-09-15 09:27:55.000000000 -0700
+++ linux-2.6.18-rc7/drivers/net/Makefile 2006-09-15 10:51:59.000000000 -0700
@@ -219,3 +219,4 @@ obj-$(CONFIG_NETCONSOLE) += netconsole.o

obj-$(CONFIG_FS_ENET) += fs_enet/

+obj-$(CONFIG_NETXEN_NIC) += netxen/
diff -Narup -X linux-2.6.18-rc7.orig/Documentation/dontdiff linux-2.6.18-rc7.orig/drivers/net/netxen/Makefile linux-2.6.18-rc7/drivers/net/netxen/Makefile
--- linux-2.6.18-rc7.orig/drivers/net/netxen/Makefile 1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.18-rc7/drivers/net/netxen/Makefile 2006-09-15 10:51:59.000000000 -0700
@@ -0,0 +1,35 @@
+# Copyright (C) 2003 - 2006 NetXen, Inc.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+# MA 02111-1307, USA.
+#
+# The full GNU General Public License is included in this distribution
+# in the file called LICENSE.
+#
+# Contact Information:
+# info@netxen.com
+# NetXen,
+# 3965 Freedom Circle, Fourth floor,
+# Santa Clara, CA 95054
+#
+# Makefile for the NetXen NIC Driver
+#
+
+
+obj-$(CONFIG_NETXEN_NIC) := netxen_nic.o
+
+netxen_nic-y := netxen_nic_hw.o netxen_nic_main.o netxen_nic_init.o \
+ netxen_nic_isr.o netxen_nic_ethtool.o netxen_nic_niu.o
diff -Narup -X linux-2.6.18-rc7.orig/Documentation/dontdiff linux-2.6.18-rc7.orig/drivers/net/netxen/netxen_nic_main.c linux-2.6.18-rc7/drivers/net/netxen/netxen_nic_main.c
--- linux-2.6.18-rc7.orig/drivers/net/netxen/netxen_nic_main.c 1969-12-31 16:00:00.000000000 -0800
+++ linux-2.6.18-rc7/drivers/net/netxen/netxen_nic_main.c 2006-09-15 10:51:59.000000000 -0700
@@ -0,0 +1,1116 @@
+/*
+ * Copyright (C) 2003 - 2006 NetXen, Inc.
+ * 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.
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.
+ *
+ * Contact Information:
+ * info@netxen.com
+ * NetXen,
+ * 3965 Freedom Circle, Fourth floor,
+ * Santa Clara, CA 95054
+ *
+ *
+ * Main source file for NetXen NIC Driver on Linux
+ *
+ */
+
+#include "netxen_nic_hw.h"
+
+#include "netxen_nic.h"
+#define DEFINE_GLOBAL_RECV_CRB
+#include "netxen_nic_phan_reg.h"
+#include "netxen_nic_ioctl.h"
+
+MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
+
+char netxen_nic_driver_name[] = "netxen";
+static char netxen_nic_driver_string[] = "NetXen Network Driver version "
+ NETXEN_NIC_LINUX_VERSIONID "-" NETXEN_NIC_BUILD_NO;
+
+#define NETXEN_NETDEV_WEIGHT 120
+#define NETXEN_ADAPTER_UP_MAGIC 777
+
+/* Local functions to NetXen NIC driver */
+static int __devinit netxen_nic_probe(struct pci_dev *pdev,
+ const struct pci_device_id *ent);
+static void __devexit netxen_nic_remove(struct pci_dev *pdev);
+static int netxen_nic_open(struct net_device *netdev);
+static int netxen_nic_close(struct net_device *netdev);
+static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
+static void netxen_tx_timeout(struct net_device *netdev);
+static void netxen_tx_timeout_task(struct net_device *netdev);
+static void netxen_watchdog(unsigned long);
+static int netxen_handle_int(struct netxen_adapter *, struct net_device *);
+static int netxen_nic_ioctl(struct net_device *netdev,
+ struct ifreq *ifr, int cmd);
+static int netxen_nic_poll(struct net_device *dev, int *budget);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void netxen_nic_poll_controller(struct net_device *netdev);
+#endif
+static irqreturn_t netxen_intr(int irq, void *data, struct pt_regs *regs);
+
+/* PCI Device ID Table */
+static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
+ {PCI_DEVICE(0x4040, 0x0001)},
+ {PCI_DEVICE(0x4040, 0x0002)},
+ {PCI_DEVICE(0x4040, 0x0003)},
+ {PCI_DEVICE(0x4040, 0x0004)},
+ {PCI_DEVICE(0x4040, 0x0005)},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
+
+/*
+ * netxen_nic_probe()
+ *
+ * The Linux system will invoke this after identifying the vendor ID and
+ * device Id in the pci_tbl supported by this module.
+ *
+ * A quad port card has one operational PCI config space, (function 0),
+ * which is used to access all four ports.
+ *
+ * This routine will initialize the adapter, and setup the global parameters
+ * along with the port's specific structure.
+ */
+static int __devinit
+netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct net_device *netdev = NULL;
+ struct netxen_adapter *adapter = NULL;
+ struct netxen_port *port = NULL;
+ u8 __iomem *mem_ptr = NULL;
+ unsigned long mem_base, mem_len;
+ int pci_using_dac, i, err;
+ int ring;
+ struct netxen_recv_context *recv_ctx = NULL;
+ struct netxen_rcv_desc_ctx *rcv_desc = NULL;
+ struct netxen_cmd_buffer *cmd_buf_arr = NULL;
+ u64 mac_addr[FLASH_NUM_PORTS + 1];
+ int valid_mac;
+
+ if ((err = pci_enable_device(pdev)))
+ return err;
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ err = -ENODEV;
+ goto err_out_disable_pdev;
+ }
+
+ if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
+ goto err_out_disable_pdev;
+
+ pci_set_master(pdev);
+ if ((pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) &&
+ (pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK) == 0))
+ pci_using_dac = 1;
+ else {
+ if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
+ (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
+ goto err_out_free_res;
+
+ pci_using_dac = 0;
+ }
+
+ /* remap phys address */
+ mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
+ mem_len = pci_resource_len(pdev, 0);
+
+ /* 128 Meg of memory */
+ mem_ptr = ioremap(mem_base, NETXEN_PCI_MAPSIZE_BYTES);
+ if (mem_ptr == 0UL) {
+ printk(KERN_ERR "%s: Cannot ioremap adapter memory aborting."
+ ":%p\n", netxen_nic_driver_name, mem_ptr);
+ err = -EIO;
+ goto err_out_free_res;
+ }
+
+/*
+ * Allocate a adapter structure which will manage all the initialization
+ * as well as the common resources for all ports...
+ * all the ports will have pointer to this adapter as well as Adapter
+ * will have pointers of all the ports structures.
+ */
+
+ /* One adapter structure for all 4 ports.... */
+ adapter = kzalloc(sizeof(struct netxen_adapter), GFP_KERNEL);
+ if (adapter == NULL) {
+ printk(KERN_ERR "%s: Could not allocate adapter memory:%d\n",
+ netxen_nic_driver_name,
+ (int)sizeof(struct netxen_adapter));
+ err = -ENOMEM;
+ goto err_out_iounmap;
+ }
+
+ adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS;
+ adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
+ adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
+
+ pci_set_drvdata(pdev, adapter);
+
+ cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
+ if (cmd_buf_arr == NULL) {
+ err = -ENOMEM;
+ goto err_out_free_adapter;
+ }
+ memset(cmd_buf_arr, 0, TX_RINGSIZE);
+
+ for (i = 0; i < MAX_RCV_CTX; ++i) {
+ recv_ctx = &adapter->recv_ctx[i];
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ rcv_desc = &recv_ctx->rcv_desc[ring];
+ switch (RCV_DESC_TYPE(ring)) {
+ case RCV_DESC_NORMAL:
+ rcv_desc->max_rx_desc_count =
+ adapter->max_rx_desc_count;
+ rcv_desc->flags = RCV_DESC_NORMAL;
+ rcv_desc->dma_size = RX_DMA_MAP_LEN;
+ rcv_desc->skb_size = MAX_RX_BUFFER_LENGTH;
+ break;
+
+ case RCV_DESC_JUMBO:
+ rcv_desc->max_rx_desc_count =
+ adapter->max_jumbo_rx_desc_count;
+ rcv_desc->flags = RCV_DESC_JUMBO;
+ rcv_desc->dma_size = RX_JUMBO_DMA_MAP_LEN;
+ rcv_desc->skb_size = MAX_RX_JUMBO_BUFFER_LENGTH;
+ break;
+
+ }
+ rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *)
+ vmalloc(RCV_BUFFSIZE);
+
+ if (rcv_desc->rx_buf_arr == NULL) {
+ err = -ENOMEM;
+ goto err_out_free_rx_buffer;
+ }
+ memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE);
+ }
+
+ }
+
+ adapter->ops = kzalloc(sizeof(struct netxen_drvops), GFP_KERNEL);
+ if (adapter->ops == NULL) {
+ printk(KERN_ERR
+ "%s: Could not allocate memory for adapter->ops:%d\n",
+ netxen_nic_driver_name,
+ (int)sizeof(struct netxen_adapter));
+ err = -ENOMEM;
+ goto err_out_free_rx_buffer;
+ }
+
+ adapter->cmd_buf_arr = cmd_buf_arr;
+ adapter->ahw.pci_base = mem_ptr;
+ spin_lock_init(&adapter->tx_lock);
+ spin_lock_init(&adapter->lock);
+ /* initialize the buffers in adapter */
+ netxen_initialize_adapter_sw(adapter);
+ /*
+ * Set the CRB window to invalid. If any register in window 0 is
+ * accessed it should set the window to 0 and then reset it to 1.
+ */
+ adapter->curr_window = 255;
+ /*
+ * Adapter in our case is quad port so initialize it before
+ * initializing the ports
+ */
+ netxen_initialize_adapter_hw(adapter); /* initialize the adapter */
+
+ netxen_initialize_adapter_ops(adapter);
+
+ init_timer(&adapter->watchdog_timer);
+ adapter->ahw.xg_linkup = 0;
+ adapter->watchdog_timer.function = &netxen_watchdog;
+ adapter->watchdog_timer.data = (unsigned long)adapter;
+ INIT_WORK(&adapter->watchdog_task,
+ (void (*)(void *))netxen_watchdog_task, adapter);
+ adapter->ahw.pdev = pdev;
+ adapter->proc_cmd_buf_counter = 0;
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &adapter->ahw.revision_id);
+
+ if (pci_enable_msi(pdev)) {
+ adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
+ printk(KERN_WARNING "%s: unable to allocate MSI interrupt"
+ " error\n", netxen_nic_driver_name);
+ } else
+ adapter->flags |= NETXEN_NIC_MSI_ENABLED;
+
+ if (netxen_is_flash_supported(adapter) == 0 &&
+ netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
+ valid_mac = 1;
+ else
+ valid_mac = 0;
+
+ /* initialize the all the ports */
+
+ for (i = 0; i < adapter->ahw.max_ports; i++) {
+ netdev = alloc_etherdev(sizeof(struct netxen_port));
+ if (!netdev) {
+ printk(KERN_ERR "%s: could not allocate netdev for port"
+ " %d\n", netxen_nic_driver_name, i + 1);
+ goto err_out_free_dev;
+ }
+
+ SET_MODULE_OWNER(netdev);
+
+ port = netdev_priv(netdev);
+ port->netdev = netdev;
+ port->pdev = pdev;
+ port->adapter = adapter;
+ port->portnum = i; /* Gigabit port number from 0-3 */
+
+ netdev->open = netxen_nic_open;
+ netdev->stop = netxen_nic_close;
+ netdev->hard_start_xmit = netxen_nic_xmit_frame;
+ netdev->get_stats = netxen_nic_get_stats;
+ netdev->set_multicast_list = netxen_nic_set_multi;
+ netdev->set_mac_address = netxen_nic_set_mac;
+ netdev->change_mtu = netxen_nic_change_mtu;
+ netdev->do_ioctl = netxen_nic_ioctl;
+ netdev->tx_timeout = netxen_tx_timeout;
+ netdev->watchdog_timeo = HZ;
+
+ SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
+ netdev->poll = netxen_nic_poll;
+ netdev->weight = NETXEN_NETDEV_WEIGHT;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ netdev->poll_controller = netxen_nic_poll_controller;
+#endif
+ /* ScatterGather support */
+ netdev->features = NETIF_F_SG;
+ netdev->features |= NETIF_F_IP_CSUM;
+ netdev->features |= NETIF_F_TSO;
+
+ if (pci_using_dac)
+ netdev->features |= NETIF_F_HIGHDMA;
+
+ if (valid_mac) {
+ unsigned char *p = (unsigned char *)&mac_addr[i];
+ netdev->dev_addr[0] = *(p + 5);
+ netdev->dev_addr[1] = *(p + 4);
+ netdev->dev_addr[2] = *(p + 3);
+ netdev->dev_addr[3] = *(p + 2);
+ netdev->dev_addr[4] = *(p + 1);
+ netdev->dev_addr[5] = *(p + 0);
+
+ memcpy(netdev->perm_addr, netdev->dev_addr,
+ netdev->addr_len);
+ if (!is_valid_ether_addr(netdev->perm_addr)) {
+ printk(KERN_ERR "%s: Bad MAC address "
+ "%02x:%02x:%02x:%02x:%02x:%02x.\n",
+ netxen_nic_driver_name,
+ netdev->dev_addr[0],
+ netdev->dev_addr[1],
+ netdev->dev_addr[2],
+ netdev->dev_addr[3],
+ netdev->dev_addr[4],
+ netdev->dev_addr[5]);
+ } else {
+ if (adapter->ops->macaddr_set)
+ adapter->ops->macaddr_set(port,
+ netdev->
+ dev_addr);
+ }
+ }
+ INIT_WORK(&adapter->tx_timeout_task,
+ (void (*)(void *))netxen_tx_timeout_task, netdev);
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ if ((err = register_netdev(netdev))) {
+ printk(KERN_ERR "%s: register_netdev failed port #%d"
+ " aborting\n", netxen_nic_driver_name, i + 1);
+ err = -EIO;
+ free_netdev(netdev);
+ goto err_out_free_dev;
+ }
+ adapter->port_count++;
+ adapter->active_ports = 0;
+ adapter->port[i] = port;
+ }
+
+ /*
+ * Initialize all the CRB registers here.
+ */
+ /* Window = 1 */
+ writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET));
+ writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_CONSUMER_OFFSET));
+ writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
+
+ netxen_phantom_init(adapter);
+ /*
+ * delay a while to ensure that the Pegs are up & running.
+ * Otherwise, we might see some flaky behaviour.
+ */
+ udelay(100);
+
+ switch (adapter->ahw.board_type) {
+ case NETXEN_NIC_GBE:
+ printk("%s: QUAD GbE board initialized\n",
+ netxen_nic_driver_name);
+ break;
+
+ case NETXEN_NIC_XGBE:
+ printk("%s: XGbE board initialized\n", netxen_nic_driver_name);
+ break;
+ }
+
+ adapter->driver_mismatch = 0;
+
+ return 0;
+
+ err_out_free_dev:
+ if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
+ pci_disable_msi(pdev);
+ for (i = 0; i < adapter->port_count; i++) {
+ port = adapter->port[i];
+ if ((port) && (port->netdev)) {
+ unregister_netdev(port->netdev);
+ free_netdev(port->netdev);
+ }
+ }
+ kfree(adapter->ops);
+
+ err_out_free_rx_buffer:
+ for (i = 0; i < MAX_RCV_CTX; ++i) {
+ recv_ctx = &adapter->recv_ctx[i];
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ rcv_desc = &recv_ctx->rcv_desc[ring];
+ if (rcv_desc->rx_buf_arr != NULL) {
+ vfree(rcv_desc->rx_buf_arr);
+ rcv_desc->rx_buf_arr = NULL;
+ }
+ }
+ }
+
+ vfree(cmd_buf_arr);
+
+ kfree(adapter->port);
+
+ err_out_free_adapter:
+ pci_set_drvdata(pdev, NULL);
+ kfree(adapter);
+
+ err_out_iounmap:
+ iounmap(mem_ptr);
+ err_out_free_res:
+ pci_release_regions(pdev);
+ err_out_disable_pdev:
+ pci_disable_device(pdev);
+ return err;
+}
+
+static void __devexit netxen_nic_remove(struct pci_dev *pdev)
+{
+ struct netxen_adapter *adapter;
+ struct netxen_port *port;
+ struct netxen_rx_buffer *buffer;
+ struct netxen_recv_context *recv_ctx;
+ struct netxen_rcv_desc_ctx *rcv_desc;
+ int i;
+ int ctxid, ring;
+
+ adapter = pci_get_drvdata(pdev);
+ if (adapter == NULL)
+ return;
+
+ netxen_nic_stop_all_ports(adapter);
+ /* leave the hw in the same state as reboot */
+ netxen_pinit_from_rom(adapter, 0);
+ udelay(500);
+ netxen_load_firmware(adapter);
+
+ if ((adapter->flags & NETXEN_NIC_MSI_ENABLED))
+ netxen_nic_disable_int(adapter);
+
+ udelay(500); /* Delay for a while to drain the DMA engines */
+ for (i = 0; i < adapter->port_count; i++) {
+ port = adapter->port[i];
+ if ((port) && (port->netdev)) {
+ unregister_netdev(port->netdev);
+ free_netdev(port->netdev);
+ }
+ }
+
+ if ((adapter->flags & NETXEN_NIC_MSI_ENABLED))
+ pci_disable_msi(pdev);
+ pci_set_drvdata(pdev, NULL);
+ if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC)
+ netxen_free_hw_resources(adapter);
+
+ iounmap(adapter->ahw.pci_base);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+
+ for (ctxid = 0; ctxid < MAX_RCV_CTX; ++ctxid) {
+ recv_ctx = &adapter->recv_ctx[ctxid];
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ rcv_desc = &recv_ctx->rcv_desc[ring];
+ for (i = 0; i < rcv_desc->max_rx_desc_count; ++i) {
+ buffer = &(rcv_desc->rx_buf_arr[i]);
+ if (buffer->state == NETXEN_BUFFER_FREE)
+ continue;
+ pci_unmap_single(pdev, buffer->dma,
+ rcv_desc->dma_size,
+ PCI_DMA_FROMDEVICE);
+ if (buffer->skb != NULL)
+ dev_kfree_skb_any(buffer->skb);
+ }
+ vfree(rcv_desc->rx_buf_arr);
+ }
+ }
+
+ vfree(adapter->cmd_buf_arr);
+ kfree(adapter->ops);
+ kfree(adapter);
+}
+
+/*
+ * Called when a network interface is made active
+ * @returns 0 on success, negative value on failure
+ */
+static int netxen_nic_open(struct net_device *netdev)
+{
+ struct netxen_port *port = netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+ struct netxen_rcv_desc_ctx *rcv_desc;
+ int err = 0;
+ int ctx, ring;
+
+ if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
+ err = netxen_init_firmware(adapter);
+ if (err != 0) {
+ printk(KERN_ERR "Failed to init firmware\n");
+ return -EIO;
+ }
+ netxen_nic_flash_print(adapter);
+
+ /* setup all the resources for the Phantom... */
+ /* this include the descriptors for rcv, tx, and status */
+ netxen_nic_clear_stats(adapter);
+ err = netxen_nic_hw_resources(adapter);
+ if (err) {
+ printk(KERN_ERR "Error in setting hw resources:%d\n",
+ err);
+ return err;
+ }
+ if (adapter->ops->init_port
+ && adapter->ops->init_port(adapter, port->portnum) != 0) {
+ printk(KERN_ERR "%s: Failed to initialize port %d\n",
+ netxen_nic_driver_name, port->portnum);
+ netxen_free_hw_resources(adapter);
+ return -EIO;
+ }
+ if (adapter->ops->init_niu)
+ adapter->ops->init_niu(adapter);
+ for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+ for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) {
+ rcv_desc =
+ &adapter->recv_ctx[ctx].rcv_desc[ring];
+ netxen_post_rx_buffers(adapter, ctx, ring);
+ }
+ }
+ adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
+ }
+ adapter->active_ports++;
+ if (adapter->active_ports == 1) {
+ err = request_irq(adapter->ahw.pdev->irq, &netxen_intr,
+ SA_SHIRQ | SA_SAMPLE_RANDOM, netdev->name,
+ adapter);
+ if (err) {
+ printk(KERN_ERR "request_irq failed with: %d\n", err);
+ adapter->active_ports--;
+ return err;
+ }
+ adapter->irq = adapter->ahw.pdev->irq;
+ if (!adapter->driver_mismatch)
+ mod_timer(&adapter->watchdog_timer, jiffies);
+
+ netxen_nic_enable_int(adapter);
+ }
+
+ /* Done here again so that even if phantom sw overwrote it,
+ * we set it */
+ if (adapter->ops->macaddr_set)
+ adapter->ops->macaddr_set(port, netdev->dev_addr);
+ netxen_nic_set_link_parameters(port);
+
+ netxen_nic_set_multi(netdev);
+ if (!adapter->driver_mismatch)
+ netif_start_queue(netdev);
+
+ return 0;
+}
+
+/**
+ * netxen_nic_close - Disables a network interface entry point
+ **/
+static int netxen_nic_close(struct net_device *netdev)
+{
+ struct netxen_port *port = netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+ int i, j;
+ struct netxen_cmd_buffer *cmd_buff;
+ struct netxen_skb_frag *buffrag;
+
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+
+ /* disable phy_ints */
+ if (adapter->ops->disable_phy_interrupts)
+ adapter->ops->disable_phy_interrupts(adapter, port->portnum);
+
+ adapter->active_ports--;
+
+ if (!adapter->active_ports) {
+ netxen_nic_disable_int(adapter);
+ if (adapter->irq)
+ free_irq(adapter->irq, adapter);
+ cmd_buff = adapter->cmd_buf_arr;
+ for (i = 0; i < adapter->max_tx_desc_count; i++) {
+ buffrag = cmd_buff->frag_array;
+ if (buffrag->dma) {
+ pci_unmap_single(port->pdev, buffrag->dma,
+ buffrag->length,
+ PCI_DMA_TODEVICE);
+ buffrag->dma = (u64) NULL;
+ }
+ for (j = 0; j < cmd_buff->frag_count; j++) {
+ buffrag++;
+ if (buffrag->dma) {
+ pci_unmap_page(port->pdev,
+ buffrag->dma,
+ buffrag->length,
+ PCI_DMA_TODEVICE);
+ buffrag->dma = (u64) NULL;
+ }
+ }
+ /* Free the skb we received in netxen_nic_xmit_frame */
+ if (cmd_buff->skb) {
+ dev_kfree_skb_any(cmd_buff->skb);
+ cmd_buff->skb = NULL;
+ }
+ cmd_buff++;
+ }
+ del_timer_sync(&adapter->watchdog_timer);
+ }
+
+ return 0;
+}
+
+static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct netxen_port *port = netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+ struct netxen_hardware_context *hw = &adapter->ahw;
+ unsigned int first_seg_len = skb->len - skb->data_len;
+ struct netxen_skb_frag *buffrag;
+ unsigned int i;
+
+ u32 producer = 0;
+ u32 saved_producer = 0;
+ struct cmd_desc_type0_t *hwdesc;
+ int k;
+ struct netxen_cmd_buffer *pbuf = NULL;
+ unsigned int tries = 0;
+ static int dropped_packet = 0;
+ int frag_count;
+ u32 local_producer = 0;
+ u32 max_tx_desc_count = 0;
+ u32 last_cmd_consumer = 0;
+ int no_of_desc;
+
+ port->stats.xmitcalled++;
+ frag_count = skb_shinfo(skb)->nr_frags + 1;
+
+ if (unlikely(skb->len <= 0)) {
+ dev_kfree_skb_any(skb);
+ port->stats.badskblen++;
+ return NETDEV_TX_OK;
+ }
+
+ if (frag_count > MAX_BUFFERS_PER_CMD) {
+ printk("%s: %s netxen_nic_xmit_frame: frag_count (%d)"
+ "too large, can handle only %d frags\n",
+ netxen_nic_driver_name, netdev->name,
+ frag_count, MAX_BUFFERS_PER_CMD);
+ port->stats.txdropped++;
+ if ((++dropped_packet & 0xff) == 0xff)
+ printk("%s: %s droppped packets = %d\n",
+ netxen_nic_driver_name, netdev->name,
+ dropped_packet);
+
+ return NETDEV_TX_OK;
+ }
+
+ /*
+ * Everything is set up. Now, we just need to transmit it out.
+ * Note that we have to copy the contents of buffer over to
+ * right place. Later on, this can be optimized out by de-coupling the
+ * producer index from the buffer index.
+ */
+ retry_getting_window:
+ spin_lock_bh(&adapter->tx_lock);
+ if (adapter->total_threads == MAX_XMIT_PRODUCERS) {
+ spin_unlock_bh(&adapter->tx_lock);
+ /*
+ * Yield CPU
+ */
+ if (!in_atomic())
+ schedule();
+ else {
+ for (i = 0; i < 20; i++)
+ cpu_relax(); /*This a nop instr on i386 */
+ }
+ goto retry_getting_window;
+ }
+ local_producer = adapter->cmd_producer;
+ /* There 4 fragments per descriptor */
+ no_of_desc = (frag_count + 3) >> 2;
+ if (skb_shinfo(skb)->gso_size > 0) {
+ no_of_desc++;
+ if (((skb->nh.iph)->ihl * sizeof(u32)) +
+ ((skb->h.th)->doff * sizeof(u32)) +
+ sizeof(struct ethhdr) >
+ (sizeof(struct cmd_desc_type0_t) - NET_IP_ALIGN)) {
+ no_of_desc++;
+ }
+ }
+ k = adapter->cmd_producer;
+ max_tx_desc_count = adapter->max_tx_desc_count;
+ last_cmd_consumer = adapter->last_cmd_consumer;
+ if ((k + no_of_desc) >=
+ ((last_cmd_consumer <= k) ? last_cmd_consumer + max_tx_desc_count :
+ last_cmd_consumer)) {
+ spin_unlock_bh(&adapter->tx_lock);
+ if (tries == 0) {
+ local_bh_disable();
+ netxen_process_cmd_ring((unsigned long)adapter);
+ local_bh_enable();
+ ++tries;
+ goto retry_getting_window;
+ } else {
+ port->stats.nocmddescriptor++;
+ DPRINTK(ERR, "No command descriptors available,"
+ " producer = %d, consumer = %d count=%llu,"
+ " dropping packet\n", producer,
+ adapter->last_cmd_consumer,
+ port->stats.nocmddescriptor);
+
+ spin_lock_bh(&adapter->tx_lock);
+ netif_stop_queue(netdev);
+ port->flags |= NETXEN_NETDEV_STATUS;
+ spin_unlock_bh(&adapter->tx_lock);
+ return NETDEV_TX_BUSY;
+ }
+ }
+ k = get_index_range(k, max_tx_desc_count, no_of_desc);
+ adapter->cmd_producer = k;
+ adapter->total_threads++;
+ adapter->num_threads++;
+
+ spin_unlock_bh(&adapter->tx_lock);
+ /* Copy the descriptors into the hardware */
+ producer = local_producer;
+ saved_producer = producer;
+ hwdesc = &hw->cmd_desc_head[producer];
+ memset(hwdesc, 0, sizeof(struct cmd_desc_type0_t));
+ /* Take skb->data itself */
+ pbuf = &adapter->cmd_buf_arr[producer];
+ if (skb_shinfo(skb)->gso_size > 0) {
+ pbuf->mss = skb_shinfo(skb)->gso_size;
+ hwdesc->mss = skb_shinfo(skb)->gso_size;
+ } else {
+ pbuf->mss = 0;
+ hwdesc->mss = 0;
+ }
+ pbuf->no_of_descriptors = no_of_desc;
+ pbuf->total_length = skb->len;
+ pbuf->skb = skb;
+ pbuf->cmd = TX_ETHER_PKT;
+ pbuf->frag_count = frag_count;
+ pbuf->port = port->portnum;
+ buffrag = &pbuf->frag_array[0];
+ buffrag->dma = pci_map_single(port->pdev, skb->data, first_seg_len,
+ PCI_DMA_TODEVICE);
+ buffrag->length = first_seg_len;
+ CMD_DESC_TOTAL_LENGTH_WRT(hwdesc, skb->len);
+ hwdesc->num_of_buffers = frag_count;
+ hwdesc->opcode = TX_ETHER_PKT;
+
+ CMD_DESC_PORT_WRT(hwdesc, port->portnum);
+ hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
+ hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
+
+ for (i = 1, k = 1; i < frag_count; i++, k++) {
+ struct skb_frag_struct *frag;
+ int len, temp_len;
+ unsigned long offset;
+ dma_addr_t temp_dma;
+
+ /* move to next desc. if there is a need */
+ if ((i & 0x3) == 0) {
+ k = 0;
+ producer = get_next_index(producer,
+ adapter->max_tx_desc_count);
+ hwdesc = &hw->cmd_desc_head[producer];
+ memset(hwdesc, 0, sizeof(struct cmd_desc_type0_t));
+ }
+ frag = &skb_shinfo(skb)->frags[i - 1];
+ len = frag->size;
+ offset = frag->page_offset;
+
+ temp_len = len;
+ temp_dma = pci_map_page(port->pdev, frag->page, offset,
+ len, PCI_DMA_TODEVICE);
+
+ buffrag++;
+ buffrag->dma = temp_dma;
+ buffrag->length = temp_len;
+
+ DPRINTK(INFO, "for loop. i=%d k=%d\n", i, k);
+ switch (k) {
+ case 0:
+ hwdesc->buffer1_length = cpu_to_le16(temp_len);
+ hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
+ break;
+ case 1:
+ hwdesc->buffer2_length = cpu_to_le16(temp_len);
+ hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
+ break;
+ case 2:
+ hwdesc->buffer3_length = cpu_to_le16(temp_len);
+ hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
+ break;
+ case 3:
+ hwdesc->buffer4_length = temp_len;
+ hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
+ break;
+ }
+ frag++;
+ }
+ producer = get_next_index(producer, adapter->max_tx_desc_count);
+
+ /* might change opcode to TX_TCP_LSO */
+ netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
+
+ /* For LSO, we need to copy the MAC/IP/TCP headers into
+ * the descriptor ring
+ */
+ if (hw->cmd_desc_head[saved_producer].opcode == TX_TCP_LSO) {
+ int hdr_len, first_hdr_len, more_hdr;
+ hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
+ if (hdr_len > (sizeof(struct cmd_desc_type0_t) - NET_IP_ALIGN)) {
+ first_hdr_len =
+ sizeof(struct cmd_desc_type0_t) - NET_IP_ALIGN;
+ more_hdr = 1;
+ } else {
+ first_hdr_len = hdr_len;
+ more_hdr = 0;
+ }
+ /* copy the MAC/IP/TCP headers to the cmd descriptor list */
+ hwdesc = &hw->cmd_desc_head[producer];
+
+ /* copy the first 64 bytes */
+ memcpy(((void *)hwdesc) + NET_IP_ALIGN,
+ (void *)(skb->data), first_hdr_len);
+ producer = get_next_index(producer, max_tx_desc_count);
+
+ if (more_hdr) {
+ hwdesc = &hw->cmd_desc_head[producer];
+ /* copy the next 64 bytes - should be enough except
+ * for pathological case
+ */
+ memcpy((void *)hwdesc, (void *)(skb->data) +
+ first_hdr_len, hdr_len - first_hdr_len);
+ producer = get_next_index(producer, max_tx_desc_count);
+ }
+ }
+ spin_lock_bh(&adapter->tx_lock);
+ port->stats.txbytes +=
+ CMD_DESC_TOTAL_LENGTH(&hw->cmd_desc_head[saved_producer]);
+ /* Code to update the adapter considering how many producer threads
+ are currently working */
+ if ((--adapter->num_threads) == 0) {
+ /* This is the last thread */
+ u32 crb_producer = adapter->cmd_producer;
+ writel(crb_producer,
+ NETXEN_CRB_NORMALIZE(adapter, CRB_CMD_PRODUCER_OFFSET));
+ wmb();
+ adapter->total_threads = 0;
+ } else {
+ u32 crb_producer = 0;
+ crb_producer =
+ readl(NETXEN_CRB_NORMALIZE
+ (adapter, CRB_CMD_PRODUCER_OFFSET));
+ if (crb_producer == local_producer) {
+ crb_producer = get_index_range(crb_producer,
+ max_tx_desc_count,
+ no_of_desc);
+ writel(crb_producer,
+ NETXEN_CRB_NORMALIZE(adapter,
+ CRB_CMD_PRODUCER_OFFSET));
+ wmb();
+ }
+ }
+
+ port->stats.xmitfinished++;
+ spin_unlock_bh(&adapter->tx_lock);
+
+ netdev->trans_start = jiffies;
+
+ DPRINTK(INFO, "wrote CMD producer %x to phantom\n", producer);
+
+ DPRINTK(INFO, "Done. Send\n");
+ return NETDEV_TX_OK;
+}
+
+static void netxen_watchdog(unsigned long v)
+{
+ struct netxen_adapter *adapter = (struct netxen_adapter *)v;
+ schedule_work(&adapter->watchdog_task);
+}
+
+static void netxen_tx_timeout(struct net_device *netdev)
+{
+ struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+
+ schedule_work(&adapter->tx_timeout_task);
+}
+
+static void netxen_tx_timeout_task(struct net_device *netdev)
+{
+ struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev);
+ unsigned long flags;
+
+ printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
+ netxen_nic_driver_name, netdev->name);
+
+ spin_lock_irqsave(&port->adapter->lock, flags);
+ netxen_nic_close(netdev);
+ netxen_nic_open(netdev);
+ spin_unlock_irqrestore(&port->adapter->lock, flags);
+ netdev->trans_start = jiffies;
+ netif_wake_queue(netdev);
+}
+
+static int
+netxen_handle_int(struct netxen_adapter *adapter, struct net_device *netdev)
+{
+ u32 ret = 0;
+
+ DPRINTK(INFO, "Entered handle ISR\n");
+
+ adapter->stats.ints++;
+
+ if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
+ int count = 0;
+ u32 mask;
+ netxen_nic_disable_int(adapter);
+ /* Window = 0 or 1 */
+ do {
+ writel(0xffffffff, (void __iomem *)
+ (adapter->ahw.pci_base + ISR_INT_TARGET_STATUS));
+ mask = readl((void __iomem *)
+ (adapter->ahw.pci_base + ISR_INT_VECTOR));
+ } while (((mask & 0x80) != 0) && (++count < 32));
+ if ((mask & 0x80) != 0)
+ printk("Could not disable interrupt completely\n");
+
+ }
+ adapter->stats.hostints++;
+
+ if (netxen_nic_rx_has_work(adapter) || netxen_nic_tx_has_work(adapter)) {
+ if (netif_rx_schedule_prep(netdev)) {
+ /*
+ * Interrupts are already disabled.
+ */
+ __netif_rx_schedule(netdev);
+ } else {
+ static unsigned int intcount = 0;
+ if ((++intcount & 0xfff) == 0xfff)
+ printk(KERN_ERR
+ "%s: %s interrupt %d while in poll\n",
+ netxen_nic_driver_name, netdev->name,
+ intcount);
+ }
+ ret = 1;
+ }
+
+ if (ret == 0) {
+ netxen_nic_enable_int(adapter);
+ }
+
+ return ret;
+}
+
+/**
+ * netxen_intr - Interrupt Handler
+ * @irq: interrupt number
+ * data points to adapter stucture (which may be handling more than 1 port
+ **/
+irqreturn_t netxen_intr(int irq, void *data, struct pt_regs * regs)
+{
+ struct netxen_adapter *adapter;
+ struct netxen_port *port;
+ struct net_device *netdev;
+ int i;
+
+ if (unlikely(!irq)) {
+ return IRQ_NONE; /* Not our interrupt */
+ }
+
+ adapter = (struct netxen_adapter *)data;
+ for (i = 0; i < adapter->ahw.max_ports; i++) {
+ port = adapter->port[i];
+ netdev = port->netdev;
+
+ /* process our status queue (for all 4 ports) */
+ netxen_handle_int(adapter, netdev);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int netxen_nic_poll(struct net_device *netdev, int *budget)
+{
+ struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+ int work_to_do = min(*budget, netdev->quota);
+ int done = 1;
+ int ctx;
+ int this_work_done;
+
+ DPRINTK(INFO, "polling for %d descriptors\n", *budget);
+ port->stats.polled++;
+
+ adapter->work_done = 0;
+ for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
+ /*
+ * Fairness issue. This will give undue weight to the
+ * receive context 0.
+ */
+
+ /*
+ * To avoid starvation, we give each of our receivers,
+ * a fraction of the quota. Sometimes, it might happen that we
+ * have enough quota to process every packet, but since all the
+ * packets are on one context, it gets only half of the quota,
+ * and ends up not processing it.
+ */
+ this_work_done = netxen_process_rcv_ring(adapter, ctx,
+ work_to_do /
+ MAX_RCV_CTX);
+ adapter->work_done += this_work_done;
+ }
+
+ netdev->quota -= adapter->work_done;
+ *budget -= adapter->work_done;
+
+ if (adapter->work_done >= work_to_do
+ && netxen_nic_rx_has_work(adapter) != 0)
+ done = 0;
+
+ netxen_process_cmd_ring((unsigned long)adapter);
+
+ DPRINTK(INFO, "new work_done: %d work_to_do: %d\n",
+ adapter->work_done, work_to_do);
+ if (done) {
+ netif_rx_complete(netdev);
+ netxen_nic_enable_int(adapter);
+ }
+
+ return (done ? 0 : 1);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void netxen_nic_poll_controller(struct net_device *netdev)
+{
+ struct netxen_port *port = netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+ disable_irq(adapter->irq);
+ netxen_intr(adapter->irq, adapter, NULL);
+ enable_irq(adapter->irq);
+}
+#endif
+/*
+ * netxen_nic_ioctl () We provide the tcl/phanmon support through these
+ * ioctls.
+ */
+static int
+netxen_nic_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+ int err = 0;
+ struct netxen_port *port = netdev_priv(netdev);
+ struct netxen_adapter *adapter = port->adapter;
+
+ DPRINTK(INFO, "doing ioctl for %s\n", netdev->name);
+ switch (cmd) {
+ case NETXEN_NIC_CMD:
+ err = netxen_nic_do_ioctl(adapter, (void *)ifr->ifr_data, port);
+ break;
+
+ case NETXEN_NIC_NAME:
+ DPRINTK(INFO, "ioctl cmd for NetXen\n");
+ if (ifr->ifr_data) {
+ put_user(port->portnum, (u16 __user *) ifr->ifr_data);
+ }
+ break;
+
+ default:
+ DPRINTK(INFO, "ioctl cmd %x not supported\n", cmd);
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ return err;
+}
+
+static struct pci_driver netxen_driver = {
+ .name = netxen_nic_driver_name,
+ .id_table = netxen_pci_tbl,
+ .probe = netxen_nic_probe,
+ .remove = __devexit_p(netxen_nic_remove)
+};
+
+/* Driver Registration on NetXen card */
+
+static int __init netxen_init_module(void)
+{
+ printk(KERN_INFO "%s \n", netxen_nic_driver_string);
+
+ return pci_module_init(&netxen_driver);
+}
+
+module_init(netxen_init_module);
+
+static void __exit netxen_exit_module(void)
+{
+ /*
+ * Wait for some time to allow the dma to drain, if any.
+ */
+ mdelay(5);
+ pci_unregister_driver(&netxen_driver);
+}
+
+module_exit(netxen_exit_module);