diff options
Diffstat (limited to 'drivers/net/netxen/netxen_nic_main.c')
| -rw-r--r-- | drivers/net/netxen/netxen_nic_main.c | 1210 |
1 files changed, 0 insertions, 1210 deletions
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c deleted file mode 100644 index 575b71b6720..00000000000 --- a/drivers/net/netxen/netxen_nic_main.c +++ /dev/null @@ -1,1210 +0,0 @@ -/* - * 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 <linux/vmalloc.h> -#include <linux/highmem.h> -#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" - -#include <linux/dma-mapping.h> -#include <linux/vmalloc.h> - -#define PHAN_VENDOR_ID 0x4040 - -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-nic"; -static char netxen_nic_driver_string[] = "NetXen Network Driver version " - NETXEN_NIC_LINUX_VERSIONID; - -struct netxen_adapter *g_adapter = NULL; - -#define NETXEN_NETDEV_WEIGHT 120 -#define NETXEN_ADAPTER_UP_MAGIC 777 -#define NETXEN_NIC_PEG_TUNE 0 - -u8 nx_p2_id = NX_P2_C0; - -#define DMA_32BIT_MASK 0x00000000ffffffffULL -#define DMA_35BIT_MASK 0x00000007ffffffffULL - -/* 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 work_struct *work); -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); - -/* 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); - -struct workqueue_struct *netxen_workq; -static void netxen_watchdog(unsigned long); - -/* - * 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; - void __iomem *mem_ptr0 = NULL; - void __iomem *mem_ptr1 = NULL; - void __iomem *mem_ptr2 = NULL; - - u8 *db_ptr = NULL; - unsigned long mem_base, mem_len, db_base, db_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 = 0; - static int netxen_cards_found = 0; - - printk(KERN_INFO "%s \n", netxen_nic_driver_string); - /* In current scheme, we use only PCI function 0 */ - if (PCI_FUNC(pdev->devfn) != 0) { - DPRINTK(ERR, "NetXen function %d will not be enabled.\n", - PCI_FUNC(pdev->devfn)); - return -ENODEV; - } - 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); - pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id); - if (nx_p2_id == NX_P2_C1 && - (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) && - (pci_set_consistent_dma_mask(pdev, DMA_35BIT_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_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE); - mem_ptr1 = - ioremap(mem_base + SECOND_PAGE_GROUP_START, SECOND_PAGE_GROUP_SIZE); - mem_ptr2 = - ioremap(mem_base + THIRD_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE); - - if ((mem_ptr0 == 0UL) || (mem_ptr1 == 0UL) || (mem_ptr2 == 0UL)) { - DPRINTK(ERR, - "Cannot remap adapter memory aborting.:" - "0 -> %p, 1 -> %p, 2 -> %p\n", - mem_ptr0, mem_ptr1, mem_ptr2); - - err = -EIO; - goto err_out_iounmap; - } - db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ - db_len = pci_resource_len(pdev, 4); - - if (db_len == 0) { - printk(KERN_ERR "%s: doorbell is disabled\n", - netxen_nic_driver_name); - err = -EIO; - goto err_out_iounmap; - } - DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base, - db_len); - - db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES); - if (db_ptr == 0UL) { - printk(KERN_ERR "%s: Failed to allocate doorbell map.", - netxen_nic_driver_name); - err = -EIO; - goto err_out_iounmap; - } - DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr); - -/* - * 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_dbunmap; - } - - if (netxen_cards_found == 0) { - g_adapter = adapter; - } - 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; - adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS; - - pci_set_drvdata(pdev, adapter); - - cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE); - if (cmd_buf_arr == NULL) { - printk(KERN_ERR - "%s: Could not allocate cmd_buf_arr memory:%d\n", - netxen_nic_driver_name, (int)TX_RINGSIZE); - 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; - - case RCV_RING_LRO: - rcv_desc->max_rx_desc_count = - adapter->max_lro_rx_desc_count; - rcv_desc->flags = RCV_DESC_LRO; - rcv_desc->dma_size = RX_LRO_DMA_MAP_LEN; - rcv_desc->skb_size = MAX_RX_LRO_BUFFER_LENGTH; - break; - - } - rcv_desc->rx_buf_arr = (struct netxen_rx_buffer *) - vmalloc(RCV_BUFFSIZE); - - if (rcv_desc->rx_buf_arr == NULL) { - printk(KERN_ERR "%s: Could not allocate" - "rcv_desc->rx_buf_arr memory:%d\n", - netxen_nic_driver_name, - (int)RCV_BUFFSIZE); - err = -ENOMEM; - goto err_out_free_rx_buffer; - } - memset(rcv_desc->rx_buf_arr, 0, RCV_BUFFSIZE); - } - - } - - adapter->cmd_buf_arr = cmd_buf_arr; - adapter->ahw.pci_base0 = mem_ptr0; - adapter->ahw.pci_base1 = mem_ptr1; - adapter->ahw.pci_base2 = mem_ptr2; - adapter->ahw.db_base = db_ptr; - adapter->ahw.db_len = db_len; - spin_lock_init(&adapter->tx_lock); - spin_lock_init(&adapter->lock); - netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */ -#ifdef CONFIG_IA64 - netxen_pinit_from_rom(adapter, 0); - udelay(500); - netxen_load_firmware(adapter); -#endif - - /* - * 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, netxen_watchdog_task); - adapter->ahw.pdev = pdev; - adapter->proc_cmd_buf_counter = 0; - adapter->ahw.revision_id = nx_p2_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 all the CRB registers here. - */ - 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)); - - /* do this before waking up pegs so that we have valid dummy dma addr */ - err = netxen_initialize_adapter_offload(adapter); - if (err) { - goto err_out_free_dev; - } - - /* Unlock the HW, prompting the boot sequence */ - writel(1, - NETXEN_CRB_NORMALIZE(adapter, NETXEN_ROMUSB_GLB_PEGTUNE_DONE)); - - /* Handshake with the card before we register the devices. */ - netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE); - - /* initialize the all the ports */ - adapter->active_ports = 0; - - 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); - SET_NETDEV_DEV(netdev, &pdev->dev); - - 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->macaddr_set) - adapter->macaddr_set(port, - netdev->dev_addr); - } - } - adapter->netdev = netdev; - INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task); - 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->port[i] = port; - } - - /* - * 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->number = netxen_cards_found; - 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); - } - } - - netxen_free_adapter_offload(adapter); - - 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); - - err_out_free_adapter: - pci_set_drvdata(pdev, NULL); - kfree(adapter); - - err_out_dbunmap: - if (db_ptr) - iounmap(db_ptr); - - err_out_iounmap: - if (mem_ptr0) - iounmap(mem_ptr0); - if (mem_ptr1) - iounmap(mem_ptr1); - if (mem_ptr2) - iounmap(mem_ptr2); - - 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_load_firmware(adapter); - netxen_free_adapter_offload(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.db_base); - iounmap(adapter->ahw.pci_base0); - iounmap(adapter->ahw.pci_base1); - iounmap(adapter->ahw.pci_base2); - - 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); -} - -/* - * 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; - 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); - if (adapter->init_niu) - adapter->init_niu(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->init_port - && adapter->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; - } - for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) { - for (ring = 0; ring < NUM_RCV_DESC_RINGS; ring++) - netxen_post_rx_buffers(adapter, ctx, ring); - } - adapter->irq = adapter->ahw.pdev->irq; - 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); - netxen_free_hw_resources(adapter); - return err; - } - - adapter->is_up = NETXEN_ADAPTER_UP_MAGIC; - } - adapter->active_ports++; - if (adapter->active_ports == 1) { - 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->macaddr_set) - adapter->macaddr_set(port, netdev->dev_addr); - netxen_nic_set_link_parameters(port); - - netxen_nic_set_multi(netdev); - if (adapter->set_mtu) - adapter->set_mtu(port, netdev->mtu); - - 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); - - 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++; - } - FLUSH_SCHEDULED_WORK(); - 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 *hwdesc; - int k; - struct netxen_cmd_buffer *pbuf = NULL; - 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 (netdev->features & NETIF_F_TSO) { - 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) - 2)) { - 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)) { - 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); - - 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)); - /* Take skb->data itself */ - pbuf = &adapter->cmd_buf_arr[producer]; - if ((netdev->features & NETIF_F_TSO) && 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->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; - netxen_set_cmd_desc_totallength(hwdesc, skb->len); - netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count); - netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT); - - netxen_set_cmd_desc_port(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)); - } - 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 (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer]) - == 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) - 2)) { - first_hdr_len = sizeof(struct cmd_desc_type0) - 2; - 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) + 2, - (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 += - netxen_get_cmd_desc_totallength(&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; - } - - 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; - if (adapter != g_adapter) { - printk("%s: ***BUG*** adapter[%p] != g_adapter[%p]\n", - __FUNCTION__, adapter, g_adapter); - return; - } - - SCHEDULE_WORK(&adapter->watchdog_task); -} - -static void netxen_tx_timeout(struct net_device *netdev) -{ - struct netxen_port *port = (struct netxen_port *)netdev_priv(netdev); - - SCHEDULE_WORK(&port->adapter->tx_timeout_task); -} - -static void netxen_tx_timeout_task(struct work_struct *work) -{ - struct netxen_adapter *adapter = - container_of(work, struct netxen_adapter, tx_timeout_task); - struct net_device *netdev = adapter->netdev; - unsigned long flags; - - printk(KERN_ERR "%s %s: transmit timeout, resetting.\n", - netxen_nic_driver_name, netdev->name); - - spin_lock_irqsave(&adapter->lock, flags); - netxen_nic_close(netdev); - netxen_nic_open(netdev); - spin_unlock_irqrestore(&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; - mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR)); - if ((mask & 0x80) == 0) { - /* not our interrupt */ - return ret; - } - netxen_nic_disable_int(adapter); - /* Window = 0 or 1 */ - do { - writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter, - ISR_INT_TARGET_STATUS)); - mask = readl(pci_base_offset(adapter, 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 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) */ - if (netif_running(netdev)) { - netxen_handle_int(adapter, netdev); - break; - } - } - - 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; - int work_done = 0; - - DPRINTK(INFO, "polling for %d descriptors\n", *budget); - port->stats.polled++; - - 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); - work_done += this_work_done; - } - - netdev->quota -= work_done; - *budget -= work_done; - - if (work_done >= work_to_do && netxen_nic_rx_has_work(adapter) != 0) - done = 0; - - if (netxen_process_cmd_ring((unsigned long)adapter) == 0) - done = 0; - - DPRINTK(INFO, "new work_done: %d work_to_do: %d\n", - work_done, work_to_do); - if (done) { - netif_rx_complete(netdev); - netxen_nic_enable_int(adapter); - } - - return !done; -} - -#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); - 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; - unsigned long nr_bytes = 0; - struct netxen_port *port = netdev_priv(netdev); - struct netxen_adapter *adapter = port->adapter; - char dev_name[NETXEN_NIC_NAME_LEN]; - - 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) { - sprintf(dev_name, "%s-%d", NETXEN_NIC_NAME_RSP, - port->portnum); - nr_bytes = - copy_to_user((char __user *)ifr->ifr_data, dev_name, - NETXEN_NIC_NAME_LEN); - if (nr_bytes) - err = -EIO; - - } - 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) -{ - if ((netxen_workq = create_singlethread_workqueue("netxen")) == 0) - return -ENOMEM; - - 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. - */ - destroy_workqueue(netxen_workq); - pci_unregister_driver(&netxen_driver); -} - -module_exit(netxen_exit_module); |