1262 lines
34 KiB
C
1262 lines
34 KiB
C
/*
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* Copyright (C) 2003 - 2006 NetXen, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.
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*
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* Contact Information:
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* info@netxen.com
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* NetXen,
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* 3965 Freedom Circle, Fourth floor,
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* Santa Clara, CA 95054
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*
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*
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* Main source file for NetXen NIC Driver on Linux
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*
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*/
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#include <linux/vmalloc.h>
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#include <linux/highmem.h>
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#include "netxen_nic_hw.h"
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#include "netxen_nic.h"
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#include "netxen_nic_phan_reg.h"
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#include <linux/dma-mapping.h>
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#include <net/ip.h>
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MODULE_DESCRIPTION("NetXen Multi port (1/10) Gigabit Network Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(NETXEN_NIC_LINUX_VERSIONID);
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char netxen_nic_driver_name[] = "netxen_nic";
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static char netxen_nic_driver_string[] = "NetXen Network Driver version "
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NETXEN_NIC_LINUX_VERSIONID;
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#define NETXEN_NETDEV_WEIGHT 120
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#define NETXEN_ADAPTER_UP_MAGIC 777
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#define NETXEN_NIC_PEG_TUNE 0
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/* Local functions to NetXen NIC driver */
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static int __devinit netxen_nic_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent);
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static void __devexit netxen_nic_remove(struct pci_dev *pdev);
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static int netxen_nic_open(struct net_device *netdev);
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static int netxen_nic_close(struct net_device *netdev);
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static int netxen_nic_xmit_frame(struct sk_buff *, struct net_device *);
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static void netxen_tx_timeout(struct net_device *netdev);
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static void netxen_tx_timeout_task(struct work_struct *work);
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static void netxen_watchdog(unsigned long);
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static int netxen_nic_poll(struct napi_struct *napi, int budget);
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#ifdef CONFIG_NET_POLL_CONTROLLER
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static void netxen_nic_poll_controller(struct net_device *netdev);
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#endif
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static irqreturn_t netxen_intr(int irq, void *data);
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static irqreturn_t netxen_msi_intr(int irq, void *data);
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int physical_port[] = {0, 1, 2, 3};
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/* PCI Device ID Table */
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static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
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{PCI_DEVICE(0x4040, 0x0001)},
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{PCI_DEVICE(0x4040, 0x0002)},
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{PCI_DEVICE(0x4040, 0x0003)},
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{PCI_DEVICE(0x4040, 0x0004)},
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{PCI_DEVICE(0x4040, 0x0005)},
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{PCI_DEVICE(0x4040, 0x0024)},
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{PCI_DEVICE(0x4040, 0x0025)},
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
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struct workqueue_struct *netxen_workq;
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static void netxen_watchdog(unsigned long);
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static void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
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uint32_t crb_producer)
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{
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switch (adapter->portnum) {
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case 0:
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writel(crb_producer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_PRODUCER_OFFSET));
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return;
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case 1:
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writel(crb_producer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_PRODUCER_OFFSET_1));
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return;
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case 2:
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writel(crb_producer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_PRODUCER_OFFSET_2));
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return;
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case 3:
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writel(crb_producer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_PRODUCER_OFFSET_3));
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return;
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default:
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printk(KERN_WARNING "We tried to update "
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"CRB_CMD_PRODUCER_OFFSET for invalid "
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"PCI function id %d\n",
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adapter->portnum);
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return;
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}
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}
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static void netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
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u32 crb_consumer)
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{
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switch (adapter->portnum) {
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case 0:
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writel(crb_consumer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_CONSUMER_OFFSET));
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return;
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case 1:
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writel(crb_consumer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_CONSUMER_OFFSET_1));
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return;
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case 2:
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writel(crb_consumer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_CONSUMER_OFFSET_2));
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return;
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case 3:
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writel(crb_consumer, NETXEN_CRB_NORMALIZE
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(adapter, CRB_CMD_CONSUMER_OFFSET_3));
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return;
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default:
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printk(KERN_WARNING "We tried to update "
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"CRB_CMD_PRODUCER_OFFSET for invalid "
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"PCI function id %d\n",
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adapter->portnum);
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return;
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}
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}
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#define ADAPTER_LIST_SIZE 12
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static uint32_t msi_tgt_status[4] = {
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ISR_INT_TARGET_STATUS, ISR_INT_TARGET_STATUS_F1,
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ISR_INT_TARGET_STATUS_F2, ISR_INT_TARGET_STATUS_F3
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};
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static uint32_t sw_int_mask[4] = {
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CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1,
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CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3
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};
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static void netxen_nic_disable_int(struct netxen_adapter *adapter)
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{
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u32 mask = 0x7ff;
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int retries = 32;
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int port = adapter->portnum;
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int pci_fn = adapter->ahw.pci_func;
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if (adapter->msi_mode != MSI_MODE_MULTIFUNC)
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writel(0x0, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port]));
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if (adapter->intr_scheme != -1 &&
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adapter->intr_scheme != INTR_SCHEME_PERPORT)
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writel(mask,PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
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if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
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do {
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writel(0xffffffff,
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PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_STATUS));
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mask = readl(pci_base_offset(adapter, ISR_INT_VECTOR));
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if (!(mask & 0x80))
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break;
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udelay(10);
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} while (--retries);
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if (!retries) {
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printk(KERN_NOTICE "%s: Failed to disable interrupt completely\n",
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netxen_nic_driver_name);
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}
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} else {
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if (adapter->msi_mode == MSI_MODE_MULTIFUNC) {
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writel(0xffffffff, PCI_OFFSET_SECOND_RANGE(adapter,
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msi_tgt_status[pci_fn]));
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}
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}
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}
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static void netxen_nic_enable_int(struct netxen_adapter *adapter)
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{
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u32 mask;
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int port = adapter->portnum;
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DPRINTK(1, INFO, "Entered ISR Enable \n");
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if (adapter->intr_scheme != -1 &&
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adapter->intr_scheme != INTR_SCHEME_PERPORT) {
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switch (adapter->ahw.board_type) {
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case NETXEN_NIC_GBE:
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mask = 0x77b;
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break;
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case NETXEN_NIC_XGBE:
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mask = 0x77f;
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break;
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default:
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mask = 0x7ff;
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break;
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}
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writel(mask, PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_MASK));
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}
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writel(0x1, NETXEN_CRB_NORMALIZE(adapter, sw_int_mask[port]));
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if (!(adapter->flags & NETXEN_NIC_MSI_ENABLED)) {
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mask = 0xbff;
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if (adapter->intr_scheme != -1 &&
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adapter->intr_scheme != INTR_SCHEME_PERPORT) {
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writel(0X0, NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
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}
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writel(mask,
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PCI_OFFSET_SECOND_RANGE(adapter, ISR_INT_TARGET_MASK));
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}
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DPRINTK(1, INFO, "Done with enable Int\n");
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}
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/*
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* netxen_nic_probe()
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*
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* The Linux system will invoke this after identifying the vendor ID and
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* device Id in the pci_tbl supported by this module.
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*
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* A quad port card has one operational PCI config space, (function 0),
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* which is used to access all four ports.
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*
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* This routine will initialize the adapter, and setup the global parameters
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* along with the port's specific structure.
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*/
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static int __devinit
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netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct net_device *netdev = NULL;
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struct netxen_adapter *adapter = NULL;
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void __iomem *mem_ptr0 = NULL;
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void __iomem *mem_ptr1 = NULL;
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void __iomem *mem_ptr2 = NULL;
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unsigned long first_page_group_end;
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unsigned long first_page_group_start;
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u8 __iomem *db_ptr = NULL;
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unsigned long mem_base, mem_len, db_base, db_len;
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int pci_using_dac, i = 0, err;
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int ring;
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struct netxen_recv_context *recv_ctx = NULL;
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struct netxen_rcv_desc_ctx *rcv_desc = NULL;
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struct netxen_cmd_buffer *cmd_buf_arr = NULL;
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__le64 mac_addr[FLASH_NUM_PORTS + 1];
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int valid_mac = 0;
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u32 val;
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int pci_func_id = PCI_FUNC(pdev->devfn);
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DECLARE_MAC_BUF(mac);
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printk(KERN_INFO "%s \n", netxen_nic_driver_string);
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if (pdev->class != 0x020000) {
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printk(KERN_ERR"NetXen function %d, class %x will not "
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"be enabled.\n",pci_func_id, pdev->class);
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return -ENODEV;
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}
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if ((err = pci_enable_device(pdev)))
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return err;
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if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
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err = -ENODEV;
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goto err_out_disable_pdev;
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}
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if ((err = pci_request_regions(pdev, netxen_nic_driver_name)))
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goto err_out_disable_pdev;
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pci_set_master(pdev);
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if (pdev->revision == NX_P2_C1 &&
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(pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
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(pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
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pci_using_dac = 1;
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} else {
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if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
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(err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)))
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goto err_out_free_res;
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pci_using_dac = 0;
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}
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netdev = alloc_etherdev(sizeof(struct netxen_adapter));
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if(!netdev) {
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printk(KERN_ERR"%s: Failed to allocate memory for the "
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"device block.Check system memory resource"
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" usage.\n", netxen_nic_driver_name);
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goto err_out_free_res;
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}
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SET_NETDEV_DEV(netdev, &pdev->dev);
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adapter = netdev->priv;
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adapter->ahw.pdev = pdev;
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adapter->ahw.pci_func = pci_func_id;
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/* remap phys address */
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mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
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mem_len = pci_resource_len(pdev, 0);
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/* 128 Meg of memory */
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if (mem_len == NETXEN_PCI_128MB_SIZE) {
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mem_ptr0 = ioremap(mem_base, FIRST_PAGE_GROUP_SIZE);
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mem_ptr1 = ioremap(mem_base + SECOND_PAGE_GROUP_START,
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SECOND_PAGE_GROUP_SIZE);
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mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START,
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THIRD_PAGE_GROUP_SIZE);
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first_page_group_start = FIRST_PAGE_GROUP_START;
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first_page_group_end = FIRST_PAGE_GROUP_END;
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} else if (mem_len == NETXEN_PCI_32MB_SIZE) {
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mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
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mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
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SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
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first_page_group_start = 0;
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first_page_group_end = 0;
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} else {
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err = -EIO;
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goto err_out_free_netdev;
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}
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if ((!mem_ptr0 && mem_len == NETXEN_PCI_128MB_SIZE) ||
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!mem_ptr1 || !mem_ptr2) {
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DPRINTK(ERR,
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"Cannot remap adapter memory aborting.:"
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"0 -> %p, 1 -> %p, 2 -> %p\n",
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mem_ptr0, mem_ptr1, mem_ptr2);
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err = -EIO;
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goto err_out_iounmap;
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}
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db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
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db_len = pci_resource_len(pdev, 4);
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if (db_len == 0) {
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printk(KERN_ERR "%s: doorbell is disabled\n",
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netxen_nic_driver_name);
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err = -EIO;
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goto err_out_iounmap;
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}
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DPRINTK(INFO, "doorbell ioremap from %lx a size of %lx\n", db_base,
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db_len);
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db_ptr = ioremap(db_base, NETXEN_DB_MAPSIZE_BYTES);
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if (!db_ptr) {
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printk(KERN_ERR "%s: Failed to allocate doorbell map.",
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netxen_nic_driver_name);
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err = -EIO;
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goto err_out_iounmap;
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}
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DPRINTK(INFO, "doorbell ioremaped at %p\n", db_ptr);
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adapter->ahw.pci_base0 = mem_ptr0;
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adapter->ahw.first_page_group_start = first_page_group_start;
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adapter->ahw.first_page_group_end = first_page_group_end;
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adapter->ahw.pci_base1 = mem_ptr1;
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adapter->ahw.pci_base2 = mem_ptr2;
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adapter->ahw.db_base = db_ptr;
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adapter->ahw.db_len = db_len;
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adapter->netdev = netdev;
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adapter->pdev = pdev;
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netif_napi_add(netdev, &adapter->napi,
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netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
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/* this will be read from FW later */
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adapter->intr_scheme = -1;
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adapter->msi_mode = -1;
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/* This will be reset for mezz cards */
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adapter->portnum = pci_func_id;
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adapter->status &= ~NETXEN_NETDEV_STATUS;
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adapter->rx_csum = 1;
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netdev->open = netxen_nic_open;
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netdev->stop = netxen_nic_close;
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netdev->hard_start_xmit = netxen_nic_xmit_frame;
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netdev->get_stats = netxen_nic_get_stats;
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netdev->set_multicast_list = netxen_nic_set_multi;
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netdev->set_mac_address = netxen_nic_set_mac;
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netdev->change_mtu = netxen_nic_change_mtu;
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netdev->tx_timeout = netxen_tx_timeout;
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netdev->watchdog_timeo = 2*HZ;
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netxen_nic_change_mtu(netdev, netdev->mtu);
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SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
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#ifdef CONFIG_NET_POLL_CONTROLLER
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netdev->poll_controller = netxen_nic_poll_controller;
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#endif
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/* ScatterGather support */
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netdev->features = NETIF_F_SG;
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netdev->features |= NETIF_F_IP_CSUM;
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netdev->features |= NETIF_F_TSO;
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if (pci_using_dac)
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netdev->features |= NETIF_F_HIGHDMA;
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if (pci_enable_msi(pdev))
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adapter->flags &= ~NETXEN_NIC_MSI_ENABLED;
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else
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adapter->flags |= NETXEN_NIC_MSI_ENABLED;
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netdev->irq = pdev->irq;
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INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
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/*
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* Set the CRB window to invalid. If any register in window 0 is
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* accessed it should set the window to 0 and then reset it to 1.
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*/
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adapter->curr_window = 255;
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/* initialize the adapter */
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netxen_initialize_adapter_hw(adapter);
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/*
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* Adapter in our case is quad port so initialize it before
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* initializing the ports
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*/
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netxen_initialize_adapter_ops(adapter);
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adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
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if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB35_4G) ||
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(adapter->ahw.boardcfg.board_type ==
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NETXEN_BRDTYPE_P2_SB31_2G))
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
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else
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS;
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adapter->max_jumbo_rx_desc_count = MAX_JUMBO_RCV_DESCRIPTORS;
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adapter->max_lro_rx_desc_count = MAX_LRO_RCV_DESCRIPTORS;
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cmd_buf_arr = (struct netxen_cmd_buffer *)vmalloc(TX_RINGSIZE);
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if (cmd_buf_arr == NULL) {
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printk(KERN_ERR
|
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"%s: Could not allocate cmd_buf_arr memory:%d\n",
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netxen_nic_driver_name, (int)TX_RINGSIZE);
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err = -ENOMEM;
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goto err_out_free_adapter;
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}
|
|
memset(cmd_buf_arr, 0, TX_RINGSIZE);
|
|
adapter->cmd_buf_arr = cmd_buf_arr;
|
|
|
|
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);
|
|
}
|
|
|
|
}
|
|
|
|
netxen_initialize_adapter_sw(adapter); /* initialize the buffers in adapter */
|
|
|
|
/* Mezz cards have PCI function 0,2,3 enabled */
|
|
if ((adapter->ahw.boardcfg.board_type == NETXEN_BRDTYPE_P2_SB31_10G_IMEZ)
|
|
&& (pci_func_id >= 2))
|
|
adapter->portnum = pci_func_id - 2;
|
|
|
|
#ifdef CONFIG_IA64
|
|
if(adapter->portnum == 0) {
|
|
netxen_pinit_from_rom(adapter, 0);
|
|
udelay(500);
|
|
netxen_load_firmware(adapter);
|
|
}
|
|
#endif
|
|
|
|
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->ahw.revision_id = pdev->revision;
|
|
|
|
/* make sure Window == 1 */
|
|
netxen_nic_pci_change_crbwindow(adapter, 1);
|
|
|
|
netxen_nic_update_cmd_producer(adapter, 0);
|
|
netxen_nic_update_cmd_consumer(adapter, 0);
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_HOST_CMD_ADDR_LO));
|
|
|
|
if (netxen_is_flash_supported(adapter) == 0 &&
|
|
netxen_get_flash_mac_addr(adapter, mac_addr) == 0)
|
|
valid_mac = 1;
|
|
else
|
|
valid_mac = 0;
|
|
|
|
if (valid_mac) {
|
|
unsigned char *p = (unsigned char *)&mac_addr[adapter->portnum];
|
|
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 %s.\n",
|
|
netxen_nic_driver_name,
|
|
print_mac(mac, netdev->dev_addr));
|
|
} else {
|
|
if (adapter->macaddr_set)
|
|
adapter->macaddr_set(adapter,
|
|
netdev->dev_addr);
|
|
}
|
|
}
|
|
|
|
if (adapter->portnum == 0) {
|
|
err = netxen_initialize_adapter_offload(adapter);
|
|
if (err)
|
|
goto err_out_free_rx_buffer;
|
|
val = readl(NETXEN_CRB_NORMALIZE(adapter,
|
|
NETXEN_CAM_RAM(0x1fc)));
|
|
if (val == 0x55555555) {
|
|
/* This is the first boot after power up */
|
|
netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
|
|
if (!(val & 0x4)) {
|
|
val |= 0x4;
|
|
netxen_nic_write_w0(adapter, NETXEN_PCIE_REG(0x4), val);
|
|
netxen_nic_read_w0(adapter, NETXEN_PCIE_REG(0x4), &val);
|
|
if (!(val & 0x4))
|
|
printk(KERN_ERR "%s: failed to set MSI bit in PCI-e reg\n",
|
|
netxen_nic_driver_name);
|
|
}
|
|
val = readl(NETXEN_CRB_NORMALIZE(adapter,
|
|
NETXEN_ROMUSB_GLB_SW_RESET));
|
|
printk(KERN_INFO"NetXen: read 0x%08x for reset reg.\n",val);
|
|
if (val != 0x80000f) {
|
|
/* clear the register for future unloads/loads */
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter,
|
|
NETXEN_CAM_RAM(0x1fc)));
|
|
printk(KERN_ERR "ERROR in NetXen HW init sequence.\n");
|
|
err = -ENODEV;
|
|
goto err_out_free_dev;
|
|
}
|
|
}
|
|
|
|
/* clear the register for future unloads/loads */
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
|
|
printk(KERN_INFO "State: 0x%0x\n",
|
|
readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
|
|
|
|
/*
|
|
* Tell the hardware our version number.
|
|
*/
|
|
i = (_NETXEN_NIC_LINUX_MAJOR << 16)
|
|
| ((_NETXEN_NIC_LINUX_MINOR << 8))
|
|
| (_NETXEN_NIC_LINUX_SUBVERSION);
|
|
writel(i, NETXEN_CRB_NORMALIZE(adapter, CRB_DRIVER_VERSION));
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/*
|
|
* See if the firmware gave us a virtual-physical port mapping.
|
|
*/
|
|
i = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_V2P(adapter->portnum)));
|
|
if (i != 0x55555555)
|
|
physical_port[adapter->portnum] = i;
|
|
|
|
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,
|
|
adapter->portnum);
|
|
err = -EIO;
|
|
goto err_out_free_dev;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, adapter);
|
|
|
|
switch (adapter->ahw.board_type) {
|
|
case NETXEN_NIC_GBE:
|
|
printk(KERN_INFO "%s: QUAD GbE board initialized\n",
|
|
netxen_nic_driver_name);
|
|
break;
|
|
|
|
case NETXEN_NIC_XGBE:
|
|
printk(KERN_INFO "%s: XGbE board initialized\n",
|
|
netxen_nic_driver_name);
|
|
break;
|
|
}
|
|
|
|
adapter->driver_mismatch = 0;
|
|
|
|
return 0;
|
|
|
|
err_out_free_dev:
|
|
if (adapter->portnum == 0)
|
|
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:
|
|
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
|
pci_disable_msi(pdev);
|
|
|
|
pci_set_drvdata(pdev, NULL);
|
|
|
|
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_netdev:
|
|
free_netdev(netdev);
|
|
|
|
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 net_device *netdev;
|
|
struct netxen_rx_buffer *buffer;
|
|
struct netxen_recv_context *recv_ctx;
|
|
struct netxen_rcv_desc_ctx *rcv_desc;
|
|
int i, ctxid, ring;
|
|
static int init_firmware_done = 0;
|
|
|
|
adapter = pci_get_drvdata(pdev);
|
|
if (adapter == NULL)
|
|
return;
|
|
|
|
netdev = adapter->netdev;
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
|
|
init_firmware_done++;
|
|
netxen_free_hw_resources(adapter);
|
|
}
|
|
|
|
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);
|
|
|
|
if (adapter->portnum == 0) {
|
|
if (init_firmware_done) {
|
|
i = 100;
|
|
do {
|
|
if (dma_watchdog_shutdown_request(adapter) == 1)
|
|
break;
|
|
msleep(100);
|
|
if (dma_watchdog_shutdown_poll_result(adapter) == 1)
|
|
break;
|
|
} while (--i);
|
|
|
|
if (i == 0)
|
|
printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
|
|
netdev->name);
|
|
|
|
/* clear the register for future unloads/loads */
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
|
|
printk(KERN_INFO "State: 0x%0x\n",
|
|
readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
|
|
|
|
/* leave the hw in the same state as reboot */
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE));
|
|
netxen_pinit_from_rom(adapter, 0);
|
|
msleep(1);
|
|
netxen_load_firmware(adapter);
|
|
netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
|
|
}
|
|
|
|
/* clear the register for future unloads/loads */
|
|
writel(0, NETXEN_CRB_NORMALIZE(adapter, NETXEN_CAM_RAM(0x1fc)));
|
|
printk(KERN_INFO "State: 0x%0x\n",
|
|
readl(NETXEN_CRB_NORMALIZE(adapter, CRB_CMDPEG_STATE)));
|
|
|
|
i = 100;
|
|
do {
|
|
if (dma_watchdog_shutdown_request(adapter) == 1)
|
|
break;
|
|
msleep(100);
|
|
if (dma_watchdog_shutdown_poll_result(adapter) == 1)
|
|
break;
|
|
} while (--i);
|
|
|
|
if (i) {
|
|
netxen_free_adapter_offload(adapter);
|
|
} else {
|
|
printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
|
|
netdev->name);
|
|
}
|
|
}
|
|
|
|
if (adapter->irq)
|
|
free_irq(adapter->irq, adapter);
|
|
|
|
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
|
pci_disable_msi(pdev);
|
|
|
|
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);
|
|
pci_set_drvdata(pdev, NULL);
|
|
|
|
free_netdev(netdev);
|
|
}
|
|
|
|
/*
|
|
* 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_adapter *adapter = (struct netxen_adapter *)netdev->priv;
|
|
int err = 0;
|
|
int ctx, ring;
|
|
irq_handler_t handler;
|
|
unsigned long flags = IRQF_SAMPLE_RANDOM;
|
|
|
|
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;
|
|
}
|
|
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;
|
|
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
|
handler = netxen_msi_intr;
|
|
else {
|
|
flags |= IRQF_SHARED;
|
|
handler = netxen_intr;
|
|
}
|
|
err = request_irq(adapter->irq, handler,
|
|
flags, 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;
|
|
}
|
|
/* Done here again so that even if phantom sw overwrote it,
|
|
* we set it */
|
|
if (adapter->init_port
|
|
&& adapter->init_port(adapter, adapter->portnum) != 0) {
|
|
printk(KERN_ERR "%s: Failed to initialize port %d\n",
|
|
netxen_nic_driver_name, adapter->portnum);
|
|
return -EIO;
|
|
}
|
|
if (adapter->macaddr_set)
|
|
adapter->macaddr_set(adapter, netdev->dev_addr);
|
|
|
|
netxen_nic_set_link_parameters(adapter);
|
|
|
|
netxen_nic_set_multi(netdev);
|
|
if (adapter->set_mtu)
|
|
adapter->set_mtu(adapter, netdev->mtu);
|
|
|
|
if (!adapter->driver_mismatch)
|
|
mod_timer(&adapter->watchdog_timer, jiffies);
|
|
|
|
napi_enable(&adapter->napi);
|
|
netxen_nic_enable_int(adapter);
|
|
|
|
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_adapter *adapter = netdev_priv(netdev);
|
|
int i, j;
|
|
struct netxen_cmd_buffer *cmd_buff;
|
|
struct netxen_skb_frag *buffrag;
|
|
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
napi_disable(&adapter->napi);
|
|
|
|
if (adapter->stop_port)
|
|
adapter->stop_port(adapter);
|
|
|
|
netxen_nic_disable_int(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(adapter->pdev, buffrag->dma,
|
|
buffrag->length, PCI_DMA_TODEVICE);
|
|
buffrag->dma = 0ULL;
|
|
}
|
|
for (j = 0; j < cmd_buff->frag_count; j++) {
|
|
buffrag++;
|
|
if (buffrag->dma) {
|
|
pci_unmap_page(adapter->pdev, buffrag->dma,
|
|
buffrag->length,
|
|
PCI_DMA_TODEVICE);
|
|
buffrag->dma = 0ULL;
|
|
}
|
|
}
|
|
/* 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++;
|
|
}
|
|
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
|
|
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)
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{
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struct netxen_adapter *adapter = netdev_priv(netdev);
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struct netxen_hardware_context *hw = &adapter->ahw;
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unsigned int first_seg_len = skb->len - skb->data_len;
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struct netxen_skb_frag *buffrag;
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unsigned int i;
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u32 producer, consumer;
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u32 saved_producer = 0;
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struct cmd_desc_type0 *hwdesc;
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int k;
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struct netxen_cmd_buffer *pbuf = NULL;
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int frag_count;
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int no_of_desc;
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u32 num_txd = adapter->max_tx_desc_count;
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frag_count = skb_shinfo(skb)->nr_frags + 1;
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/* There 4 fragments per descriptor */
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no_of_desc = (frag_count + 3) >> 2;
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if (netdev->features & NETIF_F_TSO) {
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if (skb_shinfo(skb)->gso_size > 0) {
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no_of_desc++;
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if ((ip_hdrlen(skb) + tcp_hdrlen(skb) +
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sizeof(struct ethhdr)) >
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(sizeof(struct cmd_desc_type0) - 2)) {
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no_of_desc++;
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}
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}
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}
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producer = adapter->cmd_producer;
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smp_mb();
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consumer = adapter->last_cmd_consumer;
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if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
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netif_stop_queue(netdev);
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smp_mb();
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return NETDEV_TX_BUSY;
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}
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/* Copy the descriptors into the hardware */
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saved_producer = producer;
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hwdesc = &hw->cmd_desc_head[producer];
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memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
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/* Take skb->data itself */
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pbuf = &adapter->cmd_buf_arr[producer];
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if ((netdev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size > 0) {
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pbuf->mss = skb_shinfo(skb)->gso_size;
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hwdesc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
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} else {
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pbuf->mss = 0;
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hwdesc->mss = 0;
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}
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pbuf->total_length = skb->len;
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pbuf->skb = skb;
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pbuf->cmd = TX_ETHER_PKT;
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pbuf->frag_count = frag_count;
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pbuf->port = adapter->portnum;
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buffrag = &pbuf->frag_array[0];
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buffrag->dma = pci_map_single(adapter->pdev, skb->data, first_seg_len,
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PCI_DMA_TODEVICE);
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buffrag->length = first_seg_len;
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netxen_set_cmd_desc_totallength(hwdesc, skb->len);
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netxen_set_cmd_desc_num_of_buff(hwdesc, frag_count);
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netxen_set_cmd_desc_opcode(hwdesc, TX_ETHER_PKT);
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netxen_set_cmd_desc_port(hwdesc, adapter->portnum);
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netxen_set_cmd_desc_ctxid(hwdesc, adapter->portnum);
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hwdesc->buffer1_length = cpu_to_le16(first_seg_len);
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hwdesc->addr_buffer1 = cpu_to_le64(buffrag->dma);
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for (i = 1, k = 1; i < frag_count; i++, k++) {
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struct skb_frag_struct *frag;
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int len, temp_len;
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unsigned long offset;
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dma_addr_t temp_dma;
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/* move to next desc. if there is a need */
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if ((i & 0x3) == 0) {
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k = 0;
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producer = get_next_index(producer, num_txd);
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hwdesc = &hw->cmd_desc_head[producer];
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memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
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pbuf = &adapter->cmd_buf_arr[producer];
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pbuf->skb = NULL;
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}
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frag = &skb_shinfo(skb)->frags[i - 1];
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len = frag->size;
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offset = frag->page_offset;
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temp_len = len;
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temp_dma = pci_map_page(adapter->pdev, frag->page, offset,
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len, PCI_DMA_TODEVICE);
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buffrag++;
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buffrag->dma = temp_dma;
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buffrag->length = temp_len;
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switch (k) {
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case 0:
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hwdesc->buffer1_length = cpu_to_le16(temp_len);
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hwdesc->addr_buffer1 = cpu_to_le64(temp_dma);
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break;
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case 1:
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hwdesc->buffer2_length = cpu_to_le16(temp_len);
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hwdesc->addr_buffer2 = cpu_to_le64(temp_dma);
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break;
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case 2:
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hwdesc->buffer3_length = cpu_to_le16(temp_len);
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hwdesc->addr_buffer3 = cpu_to_le64(temp_dma);
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break;
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case 3:
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hwdesc->buffer4_length = cpu_to_le16(temp_len);
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hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
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break;
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}
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frag++;
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}
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producer = get_next_index(producer, num_txd);
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/* might change opcode to TX_TCP_LSO */
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netxen_tso_check(adapter, &hw->cmd_desc_head[saved_producer], skb);
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/* For LSO, we need to copy the MAC/IP/TCP headers into
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* the descriptor ring
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*/
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if (netxen_get_cmd_desc_opcode(&hw->cmd_desc_head[saved_producer])
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== TX_TCP_LSO) {
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int hdr_len, first_hdr_len, more_hdr;
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hdr_len = hw->cmd_desc_head[saved_producer].total_hdr_length;
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if (hdr_len > (sizeof(struct cmd_desc_type0) - 2)) {
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first_hdr_len = sizeof(struct cmd_desc_type0) - 2;
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more_hdr = 1;
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} else {
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first_hdr_len = hdr_len;
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more_hdr = 0;
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}
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/* copy the MAC/IP/TCP headers to the cmd descriptor list */
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hwdesc = &hw->cmd_desc_head[producer];
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pbuf = &adapter->cmd_buf_arr[producer];
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pbuf->skb = NULL;
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/* copy the first 64 bytes */
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memcpy(((void *)hwdesc) + 2,
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(void *)(skb->data), first_hdr_len);
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producer = get_next_index(producer, num_txd);
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if (more_hdr) {
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hwdesc = &hw->cmd_desc_head[producer];
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pbuf = &adapter->cmd_buf_arr[producer];
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pbuf->skb = NULL;
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/* copy the next 64 bytes - should be enough except
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* for pathological case
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*/
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skb_copy_from_linear_data_offset(skb, first_hdr_len,
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hwdesc,
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(hdr_len -
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first_hdr_len));
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producer = get_next_index(producer, num_txd);
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}
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}
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adapter->cmd_producer = producer;
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adapter->stats.txbytes += skb->len;
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netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
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adapter->stats.xmitcalled++;
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netdev->trans_start = jiffies;
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return NETDEV_TX_OK;
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}
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static void netxen_watchdog(unsigned long v)
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{
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struct netxen_adapter *adapter = (struct netxen_adapter *)v;
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SCHEDULE_WORK(&adapter->watchdog_task);
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}
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static void netxen_tx_timeout(struct net_device *netdev)
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{
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struct netxen_adapter *adapter = (struct netxen_adapter *)
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netdev_priv(netdev);
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SCHEDULE_WORK(&adapter->tx_timeout_task);
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}
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static void netxen_tx_timeout_task(struct work_struct *work)
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{
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struct netxen_adapter *adapter =
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container_of(work, struct netxen_adapter, tx_timeout_task);
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printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
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netxen_nic_driver_name, adapter->netdev->name);
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netxen_nic_disable_int(adapter);
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napi_disable(&adapter->napi);
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adapter->netdev->trans_start = jiffies;
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napi_enable(&adapter->napi);
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netxen_nic_enable_int(adapter);
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netif_wake_queue(adapter->netdev);
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}
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static inline void
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netxen_handle_int(struct netxen_adapter *adapter)
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{
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netxen_nic_disable_int(adapter);
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napi_schedule(&adapter->napi);
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}
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irqreturn_t netxen_intr(int irq, void *data)
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{
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struct netxen_adapter *adapter = data;
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u32 our_int = 0;
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our_int = readl(NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
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/* not our interrupt */
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if ((our_int & (0x80 << adapter->portnum)) == 0)
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return IRQ_NONE;
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if (adapter->intr_scheme == INTR_SCHEME_PERPORT) {
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/* claim interrupt */
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writel(our_int & ~((u32)(0x80 << adapter->portnum)),
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NETXEN_CRB_NORMALIZE(adapter, CRB_INT_VECTOR));
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}
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netxen_handle_int(adapter);
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return IRQ_HANDLED;
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}
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irqreturn_t netxen_msi_intr(int irq, void *data)
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{
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struct netxen_adapter *adapter = data;
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netxen_handle_int(adapter);
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return IRQ_HANDLED;
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}
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static int netxen_nic_poll(struct napi_struct *napi, int budget)
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{
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struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
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int tx_complete;
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int ctx;
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int work_done;
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tx_complete = netxen_process_cmd_ring(adapter);
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work_done = 0;
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for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
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/*
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* Fairness issue. This will give undue weight to the
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* receive context 0.
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*/
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/*
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* To avoid starvation, we give each of our receivers,
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* a fraction of the quota. Sometimes, it might happen that we
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* have enough quota to process every packet, but since all the
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* packets are on one context, it gets only half of the quota,
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* and ends up not processing it.
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*/
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work_done += netxen_process_rcv_ring(adapter, ctx,
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budget / MAX_RCV_CTX);
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}
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if ((work_done < budget) && tx_complete) {
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netif_rx_complete(adapter->netdev, &adapter->napi);
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netxen_nic_enable_int(adapter);
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}
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return work_done;
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}
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#ifdef CONFIG_NET_POLL_CONTROLLER
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static void netxen_nic_poll_controller(struct net_device *netdev)
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{
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struct netxen_adapter *adapter = netdev_priv(netdev);
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disable_irq(adapter->irq);
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netxen_intr(adapter->irq, adapter);
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enable_irq(adapter->irq);
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}
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#endif
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static struct pci_driver netxen_driver = {
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.name = netxen_nic_driver_name,
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.id_table = netxen_pci_tbl,
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.probe = netxen_nic_probe,
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.remove = __devexit_p(netxen_nic_remove)
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};
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/* Driver Registration on NetXen card */
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static int __init netxen_init_module(void)
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{
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if ((netxen_workq = create_singlethread_workqueue("netxen")) == NULL)
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return -ENOMEM;
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return pci_register_driver(&netxen_driver);
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}
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module_init(netxen_init_module);
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static void __exit netxen_exit_module(void)
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{
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/*
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* Wait for some time to allow the dma to drain, if any.
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*/
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msleep(100);
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pci_unregister_driver(&netxen_driver);
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destroy_workqueue(netxen_workq);
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}
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module_exit(netxen_exit_module);
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