1677 lines
45 KiB
C
1677 lines
45 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 <linux/if_vlan.h>
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#include <net/ip.h>
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#include <linux/ipv6.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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static int port_mode = NETXEN_PORT_MODE_AUTO_NEG;
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/* Default to restricted 1G auto-neg mode */
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static int wol_port_mode = 5;
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static int use_msi = 1;
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static int use_msi_x = 1;
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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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/* PCI Device ID Table */
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#define ENTRY(device) \
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{PCI_DEVICE(PCI_VENDOR_ID_NETXEN, (device)), \
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.class = PCI_CLASS_NETWORK_ETHERNET << 8, .class_mask = ~0}
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static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
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ENTRY(PCI_DEVICE_ID_NX2031_10GXSR),
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ENTRY(PCI_DEVICE_ID_NX2031_10GCX4),
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ENTRY(PCI_DEVICE_ID_NX2031_4GCU),
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ENTRY(PCI_DEVICE_ID_NX2031_IMEZ),
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ENTRY(PCI_DEVICE_ID_NX2031_HMEZ),
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ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT),
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ENTRY(PCI_DEVICE_ID_NX2031_XG_MGMT2),
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ENTRY(PCI_DEVICE_ID_NX3031),
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
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/*
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* In netxen_nic_down(), we must wait for any pending callback requests into
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* netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
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* reenabled right after it is deleted in netxen_nic_down().
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* FLUSH_SCHEDULED_WORK() does this synchronization.
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*
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* Normally, schedule_work()/flush_scheduled_work() could have worked, but
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* netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
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* call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
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* subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
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* linkwatch_event() to be executed which also attempts to acquire the rtnl
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* lock thus causing a deadlock.
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*/
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static struct workqueue_struct *netxen_workq;
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#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
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#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
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static void netxen_watchdog(unsigned long);
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static uint32_t crb_cmd_producer[4] = {
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CRB_CMD_PRODUCER_OFFSET, CRB_CMD_PRODUCER_OFFSET_1,
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CRB_CMD_PRODUCER_OFFSET_2, CRB_CMD_PRODUCER_OFFSET_3
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};
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void
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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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adapter->pci_write_normalize(adapter,
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adapter->crb_addr_cmd_producer, crb_producer);
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}
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static uint32_t crb_cmd_consumer[4] = {
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CRB_CMD_CONSUMER_OFFSET, CRB_CMD_CONSUMER_OFFSET_1,
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CRB_CMD_CONSUMER_OFFSET_2, CRB_CMD_CONSUMER_OFFSET_3
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};
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static inline void
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netxen_nic_update_cmd_consumer(struct netxen_adapter *adapter,
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u32 crb_consumer)
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{
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adapter->pci_write_normalize(adapter,
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adapter->crb_addr_cmd_consumer, crb_consumer);
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}
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static uint32_t msi_tgt_status[8] = {
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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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ISR_INT_TARGET_STATUS_F4, ISR_INT_TARGET_STATUS_F5,
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ISR_INT_TARGET_STATUS_F6, ISR_INT_TARGET_STATUS_F7
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};
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static struct netxen_legacy_intr_set legacy_intr[] = NX_LEGACY_INTR_CONFIG;
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static inline void netxen_nic_disable_int(struct netxen_adapter *adapter)
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{
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adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0);
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}
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static inline void netxen_nic_enable_int(struct netxen_adapter *adapter)
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{
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adapter->pci_write_normalize(adapter, adapter->crb_intr_mask, 0x1);
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if (!NETXEN_IS_MSI_FAMILY(adapter))
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adapter->pci_write_immediate(adapter,
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adapter->legacy_intr.tgt_mask_reg, 0xfbff);
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}
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static int nx_set_dma_mask(struct netxen_adapter *adapter, uint8_t revision_id)
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{
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struct pci_dev *pdev = adapter->pdev;
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int err;
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uint64_t mask;
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#ifdef CONFIG_IA64
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adapter->dma_mask = DMA_32BIT_MASK;
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#else
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if (revision_id >= NX_P3_B0) {
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/* should go to DMA_64BIT_MASK */
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adapter->dma_mask = DMA_39BIT_MASK;
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mask = DMA_39BIT_MASK;
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} else if (revision_id == NX_P3_A2) {
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adapter->dma_mask = DMA_39BIT_MASK;
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mask = DMA_39BIT_MASK;
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} else if (revision_id == NX_P2_C1) {
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adapter->dma_mask = DMA_35BIT_MASK;
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mask = DMA_35BIT_MASK;
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} else {
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adapter->dma_mask = DMA_32BIT_MASK;
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mask = DMA_32BIT_MASK;
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goto set_32_bit_mask;
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}
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/*
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* Consistent DMA mask is set to 32 bit because it cannot be set to
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* 35 bits. For P3 also leave it at 32 bits for now. Only the rings
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* come off this pool.
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*/
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if (pci_set_dma_mask(pdev, mask) == 0 &&
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pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) == 0) {
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adapter->pci_using_dac = 1;
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return 0;
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}
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#endif /* CONFIG_IA64 */
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set_32_bit_mask:
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err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
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if (!err)
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err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
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if (err) {
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DPRINTK(ERR, "No usable DMA configuration, aborting:%d\n", err);
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return err;
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}
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adapter->pci_using_dac = 0;
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return 0;
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}
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static void netxen_check_options(struct netxen_adapter *adapter)
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{
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switch (adapter->ahw.boardcfg.board_type) {
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case NETXEN_BRDTYPE_P3_HMEZ:
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case NETXEN_BRDTYPE_P3_XG_LOM:
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case NETXEN_BRDTYPE_P3_10G_CX4:
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case NETXEN_BRDTYPE_P3_10G_CX4_LP:
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case NETXEN_BRDTYPE_P3_IMEZ:
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case NETXEN_BRDTYPE_P3_10G_SFP_PLUS:
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case NETXEN_BRDTYPE_P3_10G_SFP_QT:
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case NETXEN_BRDTYPE_P3_10G_SFP_CT:
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case NETXEN_BRDTYPE_P3_10G_XFP:
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case NETXEN_BRDTYPE_P3_10000_BASE_T:
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adapter->msix_supported = !!use_msi_x;
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
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break;
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case NETXEN_BRDTYPE_P2_SB31_10G:
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case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
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case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
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case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
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adapter->msix_supported = 0;
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
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break;
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case NETXEN_BRDTYPE_P3_REF_QG:
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case NETXEN_BRDTYPE_P3_4_GB:
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case NETXEN_BRDTYPE_P3_4_GB_MM:
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adapter->msix_supported = !!use_msi_x;
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
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break;
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case NETXEN_BRDTYPE_P2_SB35_4G:
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case NETXEN_BRDTYPE_P2_SB31_2G:
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adapter->msix_supported = 0;
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
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break;
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case NETXEN_BRDTYPE_P3_10G_TP:
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adapter->msix_supported = !!use_msi_x;
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if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_10G;
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else
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
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break;
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default:
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adapter->msix_supported = 0;
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adapter->max_rx_desc_count = MAX_RCV_DESCRIPTORS_1G;
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printk(KERN_WARNING "Unknown board type(0x%x)\n",
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adapter->ahw.boardcfg.board_type);
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break;
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}
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adapter->max_tx_desc_count = MAX_CMD_DESCRIPTORS_HOST;
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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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adapter->max_possible_rss_rings = 1;
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return;
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}
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static int
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netxen_check_hw_init(struct netxen_adapter *adapter, int first_boot)
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{
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u32 val, timeout;
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if (first_boot == 0x55555555) {
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/* This is the first boot after power up */
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adapter->pci_write_normalize(adapter,
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NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
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if (!NX_IS_REVISION_P2(adapter->ahw.revision_id))
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return 0;
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/* PCI bus master workaround */
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adapter->hw_read_wx(adapter,
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NETXEN_PCIE_REG(0x4), &first_boot, 4);
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if (!(first_boot & 0x4)) {
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first_boot |= 0x4;
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adapter->hw_write_wx(adapter,
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NETXEN_PCIE_REG(0x4), &first_boot, 4);
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adapter->hw_read_wx(adapter,
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NETXEN_PCIE_REG(0x4), &first_boot, 4);
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}
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/* This is the first boot after power up */
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adapter->hw_read_wx(adapter,
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NETXEN_ROMUSB_GLB_SW_RESET, &first_boot, 4);
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if (first_boot != 0x80000f) {
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/* clear the register for future unloads/loads */
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adapter->pci_write_normalize(adapter,
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NETXEN_CAM_RAM(0x1fc), 0);
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return -EIO;
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}
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/* Start P2 boot loader */
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val = adapter->pci_read_normalize(adapter,
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NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
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adapter->pci_write_normalize(adapter,
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NETXEN_ROMUSB_GLB_PEGTUNE_DONE, val | 0x1);
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timeout = 0;
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do {
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msleep(1);
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val = adapter->pci_read_normalize(adapter,
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NETXEN_CAM_RAM(0x1fc));
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if (++timeout > 5000)
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return -EIO;
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} while (val == NETXEN_BDINFO_MAGIC);
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}
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return 0;
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}
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static void netxen_set_port_mode(struct netxen_adapter *adapter)
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{
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u32 val, data;
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val = adapter->ahw.boardcfg.board_type;
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if ((val == NETXEN_BRDTYPE_P3_HMEZ) ||
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(val == NETXEN_BRDTYPE_P3_XG_LOM)) {
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if (port_mode == NETXEN_PORT_MODE_802_3_AP) {
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data = NETXEN_PORT_MODE_802_3_AP;
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adapter->hw_write_wx(adapter,
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NETXEN_PORT_MODE_ADDR, &data, 4);
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} else if (port_mode == NETXEN_PORT_MODE_XG) {
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data = NETXEN_PORT_MODE_XG;
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adapter->hw_write_wx(adapter,
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NETXEN_PORT_MODE_ADDR, &data, 4);
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} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_1G) {
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data = NETXEN_PORT_MODE_AUTO_NEG_1G;
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adapter->hw_write_wx(adapter,
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NETXEN_PORT_MODE_ADDR, &data, 4);
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} else if (port_mode == NETXEN_PORT_MODE_AUTO_NEG_XG) {
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data = NETXEN_PORT_MODE_AUTO_NEG_XG;
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adapter->hw_write_wx(adapter,
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NETXEN_PORT_MODE_ADDR, &data, 4);
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} else {
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data = NETXEN_PORT_MODE_AUTO_NEG;
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adapter->hw_write_wx(adapter,
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NETXEN_PORT_MODE_ADDR, &data, 4);
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}
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if ((wol_port_mode != NETXEN_PORT_MODE_802_3_AP) &&
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(wol_port_mode != NETXEN_PORT_MODE_XG) &&
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(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_1G) &&
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(wol_port_mode != NETXEN_PORT_MODE_AUTO_NEG_XG)) {
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wol_port_mode = NETXEN_PORT_MODE_AUTO_NEG;
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}
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adapter->hw_write_wx(adapter, NETXEN_WOL_PORT_MODE,
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&wol_port_mode, 4);
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}
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}
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#define PCI_CAP_ID_GEN 0x10
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static void netxen_pcie_strap_init(struct netxen_adapter *adapter)
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{
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u32 pdevfuncsave;
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u32 c8c9value = 0;
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u32 chicken = 0;
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u32 control = 0;
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int i, pos;
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struct pci_dev *pdev;
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pdev = adapter->pdev;
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adapter->hw_read_wx(adapter,
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NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
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/* clear chicken3.25:24 */
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chicken &= 0xFCFFFFFF;
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/*
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* if gen1 and B0, set F1020 - if gen 2, do nothing
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* if gen2 set to F1000
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*/
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pos = pci_find_capability(pdev, PCI_CAP_ID_GEN);
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if (pos == 0xC0) {
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pci_read_config_dword(pdev, pos + 0x10, &control);
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if ((control & 0x000F0000) != 0x00020000) {
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/* set chicken3.24 if gen1 */
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chicken |= 0x01000000;
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}
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printk(KERN_INFO "%s Gen2 strapping detected\n",
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netxen_nic_driver_name);
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c8c9value = 0xF1000;
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} else {
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/* set chicken3.24 if gen1 */
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chicken |= 0x01000000;
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printk(KERN_INFO "%s Gen1 strapping detected\n",
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netxen_nic_driver_name);
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if (adapter->ahw.revision_id == NX_P3_B0)
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c8c9value = 0xF1020;
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else
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c8c9value = 0;
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}
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adapter->hw_write_wx(adapter,
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NETXEN_PCIE_REG(PCIE_CHICKEN3), &chicken, 4);
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if (!c8c9value)
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return;
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pdevfuncsave = pdev->devfn;
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if (pdevfuncsave & 0x07)
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return;
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for (i = 0; i < 8; i++) {
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pci_read_config_dword(pdev, pos + 8, &control);
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pci_read_config_dword(pdev, pos + 8, &control);
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pci_write_config_dword(pdev, pos + 8, c8c9value);
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pdev->devfn++;
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}
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pdev->devfn = pdevfuncsave;
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}
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static void netxen_set_msix_bit(struct pci_dev *pdev, int enable)
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{
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u32 control;
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int pos;
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pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
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if (pos) {
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pci_read_config_dword(pdev, pos, &control);
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if (enable)
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control |= PCI_MSIX_FLAGS_ENABLE;
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else
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control = 0;
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pci_write_config_dword(pdev, pos, control);
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}
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}
|
|
|
|
static void netxen_init_msix_entries(struct netxen_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MSIX_ENTRIES_PER_ADAPTER; i++)
|
|
adapter->msix_entries[i].entry = i;
|
|
}
|
|
|
|
static int
|
|
netxen_read_mac_addr(struct netxen_adapter *adapter)
|
|
{
|
|
int i;
|
|
unsigned char *p;
|
|
__le64 mac_addr;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
if (netxen_is_flash_supported(adapter) != 0)
|
|
return -EIO;
|
|
|
|
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
|
|
if (netxen_p3_get_mac_addr(adapter, &mac_addr) != 0)
|
|
return -EIO;
|
|
} else {
|
|
if (netxen_get_flash_mac_addr(adapter, &mac_addr) != 0)
|
|
return -EIO;
|
|
}
|
|
|
|
p = (unsigned char *)&mac_addr;
|
|
for (i = 0; i < 6; i++)
|
|
netdev->dev_addr[i] = *(p + 5 - i);
|
|
|
|
memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
|
|
|
|
/* set station address */
|
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr))
|
|
dev_warn(&pdev->dev, "Bad MAC address %pM.\n", netdev->dev_addr);
|
|
else
|
|
adapter->macaddr_set(adapter, netdev->dev_addr);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netxen_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct netxen_adapter *adapter = netdev_priv(dev);
|
|
|
|
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
|
|
netxen_p3_nic_set_multi(dev);
|
|
else
|
|
netxen_p2_nic_set_multi(dev);
|
|
}
|
|
|
|
static const struct net_device_ops netxen_netdev_ops = {
|
|
.ndo_open = netxen_nic_open,
|
|
.ndo_stop = netxen_nic_close,
|
|
.ndo_start_xmit = netxen_nic_xmit_frame,
|
|
.ndo_get_stats = netxen_nic_get_stats,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_set_multicast_list = netxen_set_multicast_list,
|
|
.ndo_set_mac_address = netxen_nic_set_mac,
|
|
.ndo_change_mtu = netxen_nic_change_mtu,
|
|
.ndo_tx_timeout = netxen_tx_timeout,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = netxen_nic_poll_controller,
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
void __iomem *mem_ptr0 = NULL;
|
|
void __iomem *mem_ptr1 = NULL;
|
|
void __iomem *mem_ptr2 = NULL;
|
|
unsigned long first_page_group_end;
|
|
unsigned long first_page_group_start;
|
|
|
|
|
|
u8 __iomem *db_ptr = NULL;
|
|
unsigned long mem_base, mem_len, db_base, db_len, pci_len0 = 0;
|
|
int i = 0, err;
|
|
int first_driver, first_boot;
|
|
u32 val;
|
|
int pci_func_id = PCI_FUNC(pdev->devfn);
|
|
struct netxen_legacy_intr_set *legacy_intrp;
|
|
uint8_t revision_id;
|
|
|
|
if (pci_func_id == 0)
|
|
printk(KERN_INFO "%s\n", netxen_nic_driver_string);
|
|
|
|
if (pdev->class != 0x020000) {
|
|
printk(KERN_DEBUG "NetXen function %d, class %x will not "
|
|
"be enabled.\n",pci_func_id, pdev->class);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (pdev->revision >= NX_P3_A0 && pdev->revision < NX_P3_B1) {
|
|
printk(KERN_WARNING "NetXen chip revisions between 0x%x-0x%x"
|
|
"will not be enabled.\n",
|
|
NX_P3_A0, NX_P3_B1);
|
|
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);
|
|
|
|
netdev = alloc_etherdev(sizeof(struct netxen_adapter));
|
|
if(!netdev) {
|
|
printk(KERN_ERR"%s: Failed to allocate memory for the "
|
|
"device block.Check system memory resource"
|
|
" usage.\n", netxen_nic_driver_name);
|
|
goto err_out_free_res;
|
|
}
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
adapter = netdev_priv(netdev);
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
adapter->ahw.pci_func = pci_func_id;
|
|
|
|
revision_id = pdev->revision;
|
|
adapter->ahw.revision_id = revision_id;
|
|
|
|
err = nx_set_dma_mask(adapter, revision_id);
|
|
if (err)
|
|
goto err_out_free_netdev;
|
|
|
|
rwlock_init(&adapter->adapter_lock);
|
|
adapter->ahw.qdr_sn_window = -1;
|
|
adapter->ahw.ddr_mn_window = -1;
|
|
|
|
/* remap phys address */
|
|
mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
|
|
mem_len = pci_resource_len(pdev, 0);
|
|
pci_len0 = 0;
|
|
|
|
adapter->hw_write_wx = netxen_nic_hw_write_wx_128M;
|
|
adapter->hw_read_wx = netxen_nic_hw_read_wx_128M;
|
|
adapter->pci_read_immediate = netxen_nic_pci_read_immediate_128M;
|
|
adapter->pci_write_immediate = netxen_nic_pci_write_immediate_128M;
|
|
adapter->pci_read_normalize = netxen_nic_pci_read_normalize_128M;
|
|
adapter->pci_write_normalize = netxen_nic_pci_write_normalize_128M;
|
|
adapter->pci_set_window = netxen_nic_pci_set_window_128M;
|
|
adapter->pci_mem_read = netxen_nic_pci_mem_read_128M;
|
|
adapter->pci_mem_write = netxen_nic_pci_mem_write_128M;
|
|
|
|
/* 128 Meg of memory */
|
|
if (mem_len == NETXEN_PCI_128MB_SIZE) {
|
|
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);
|
|
first_page_group_start = FIRST_PAGE_GROUP_START;
|
|
first_page_group_end = FIRST_PAGE_GROUP_END;
|
|
} else if (mem_len == NETXEN_PCI_32MB_SIZE) {
|
|
mem_ptr1 = ioremap(mem_base, SECOND_PAGE_GROUP_SIZE);
|
|
mem_ptr2 = ioremap(mem_base + THIRD_PAGE_GROUP_START -
|
|
SECOND_PAGE_GROUP_START, THIRD_PAGE_GROUP_SIZE);
|
|
first_page_group_start = 0;
|
|
first_page_group_end = 0;
|
|
} else if (mem_len == NETXEN_PCI_2MB_SIZE) {
|
|
adapter->hw_write_wx = netxen_nic_hw_write_wx_2M;
|
|
adapter->hw_read_wx = netxen_nic_hw_read_wx_2M;
|
|
adapter->pci_read_immediate = netxen_nic_pci_read_immediate_2M;
|
|
adapter->pci_write_immediate =
|
|
netxen_nic_pci_write_immediate_2M;
|
|
adapter->pci_read_normalize = netxen_nic_pci_read_normalize_2M;
|
|
adapter->pci_write_normalize =
|
|
netxen_nic_pci_write_normalize_2M;
|
|
adapter->pci_set_window = netxen_nic_pci_set_window_2M;
|
|
adapter->pci_mem_read = netxen_nic_pci_mem_read_2M;
|
|
adapter->pci_mem_write = netxen_nic_pci_mem_write_2M;
|
|
|
|
mem_ptr0 = ioremap(mem_base, mem_len);
|
|
pci_len0 = mem_len;
|
|
first_page_group_start = 0;
|
|
first_page_group_end = 0;
|
|
|
|
adapter->ahw.ddr_mn_window = 0;
|
|
adapter->ahw.qdr_sn_window = 0;
|
|
|
|
adapter->ahw.mn_win_crb = 0x100000 + PCIX_MN_WINDOW +
|
|
(pci_func_id * 0x20);
|
|
adapter->ahw.ms_win_crb = 0x100000 + PCIX_SN_WINDOW;
|
|
if (pci_func_id < 4)
|
|
adapter->ahw.ms_win_crb += (pci_func_id * 0x20);
|
|
else
|
|
adapter->ahw.ms_win_crb +=
|
|
0xA0 + ((pci_func_id - 4) * 0x10);
|
|
} else {
|
|
err = -EIO;
|
|
goto err_out_free_netdev;
|
|
}
|
|
|
|
dev_info(&pdev->dev, "%dMB memory map\n", (int)(mem_len>>20));
|
|
|
|
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) {
|
|
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);
|
|
|
|
adapter->ahw.pci_base0 = mem_ptr0;
|
|
adapter->ahw.pci_len0 = pci_len0;
|
|
adapter->ahw.first_page_group_start = first_page_group_start;
|
|
adapter->ahw.first_page_group_end = first_page_group_end;
|
|
adapter->ahw.pci_base1 = mem_ptr1;
|
|
adapter->ahw.pci_base2 = mem_ptr2;
|
|
adapter->ahw.db_base = db_ptr;
|
|
adapter->ahw.db_len = db_len;
|
|
|
|
netif_napi_add(netdev, &adapter->napi,
|
|
netxen_nic_poll, NETXEN_NETDEV_WEIGHT);
|
|
|
|
if (revision_id >= NX_P3_B0)
|
|
legacy_intrp = &legacy_intr[pci_func_id];
|
|
else
|
|
legacy_intrp = &legacy_intr[0];
|
|
|
|
adapter->legacy_intr.int_vec_bit = legacy_intrp->int_vec_bit;
|
|
adapter->legacy_intr.tgt_status_reg = legacy_intrp->tgt_status_reg;
|
|
adapter->legacy_intr.tgt_mask_reg = legacy_intrp->tgt_mask_reg;
|
|
adapter->legacy_intr.pci_int_reg = legacy_intrp->pci_int_reg;
|
|
|
|
/* this will be read from FW later */
|
|
adapter->intr_scheme = -1;
|
|
adapter->msi_mode = -1;
|
|
|
|
/* This will be reset for mezz cards */
|
|
adapter->portnum = pci_func_id;
|
|
adapter->status &= ~NETXEN_NETDEV_STATUS;
|
|
adapter->rx_csum = 1;
|
|
adapter->mc_enabled = 0;
|
|
if (NX_IS_REVISION_P3(revision_id))
|
|
adapter->max_mc_count = 38;
|
|
else
|
|
adapter->max_mc_count = 16;
|
|
|
|
netdev->netdev_ops = &netxen_netdev_ops;
|
|
netdev->watchdog_timeo = 2*HZ;
|
|
|
|
netxen_nic_change_mtu(netdev, netdev->mtu);
|
|
|
|
SET_ETHTOOL_OPS(netdev, &netxen_nic_ethtool_ops);
|
|
|
|
/* ScatterGather support */
|
|
netdev->features = NETIF_F_SG;
|
|
netdev->features |= NETIF_F_IP_CSUM;
|
|
netdev->features |= NETIF_F_TSO;
|
|
if (NX_IS_REVISION_P3(revision_id)) {
|
|
netdev->features |= NETIF_F_IPV6_CSUM;
|
|
netdev->features |= NETIF_F_TSO6;
|
|
}
|
|
|
|
if (adapter->pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
/*
|
|
* 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;
|
|
|
|
if (netxen_nic_get_board_info(adapter) != 0) {
|
|
printk("%s: Error getting board config info.\n",
|
|
netxen_nic_driver_name);
|
|
err = -EIO;
|
|
goto err_out_iounmap;
|
|
}
|
|
|
|
netxen_initialize_adapter_ops(adapter);
|
|
|
|
/* Mezz cards have PCI function 0,2,3 enabled */
|
|
switch (adapter->ahw.boardcfg.board_type) {
|
|
case NETXEN_BRDTYPE_P2_SB31_10G_IMEZ:
|
|
case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
|
|
if (pci_func_id >= 2)
|
|
adapter->portnum = pci_func_id - 2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* This call will setup various max rx/tx counts.
|
|
* It must be done before any buffer/ring allocations.
|
|
*/
|
|
netxen_check_options(adapter);
|
|
|
|
first_driver = 0;
|
|
if (NX_IS_REVISION_P3(revision_id)) {
|
|
if (adapter->ahw.pci_func == 0)
|
|
first_driver = 1;
|
|
} else {
|
|
if (adapter->portnum == 0)
|
|
first_driver = 1;
|
|
}
|
|
|
|
if (first_driver) {
|
|
first_boot = adapter->pci_read_normalize(adapter,
|
|
NETXEN_CAM_RAM(0x1fc));
|
|
|
|
err = netxen_check_hw_init(adapter, first_boot);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: error in init HW init sequence\n",
|
|
netxen_nic_driver_name);
|
|
goto err_out_iounmap;
|
|
}
|
|
|
|
if (NX_IS_REVISION_P3(revision_id))
|
|
netxen_set_port_mode(adapter);
|
|
|
|
if (first_boot != 0x55555555) {
|
|
adapter->pci_write_normalize(adapter,
|
|
CRB_CMDPEG_STATE, 0);
|
|
netxen_pinit_from_rom(adapter, 0);
|
|
msleep(1);
|
|
}
|
|
netxen_load_firmware(adapter);
|
|
|
|
if (NX_IS_REVISION_P3(revision_id))
|
|
netxen_pcie_strap_init(adapter);
|
|
|
|
if (NX_IS_REVISION_P2(revision_id)) {
|
|
|
|
/* Initialize multicast addr pool owners */
|
|
val = 0x7654;
|
|
if (adapter->ahw.board_type == NETXEN_NIC_XGBE)
|
|
val |= 0x0f000000;
|
|
netxen_crb_writelit_adapter(adapter,
|
|
NETXEN_MAC_ADDR_CNTL_REG, val);
|
|
|
|
}
|
|
|
|
err = netxen_initialize_adapter_offload(adapter);
|
|
if (err)
|
|
goto err_out_iounmap;
|
|
|
|
/*
|
|
* Tell the hardware our version number.
|
|
*/
|
|
i = (_NETXEN_NIC_LINUX_MAJOR << 16)
|
|
| ((_NETXEN_NIC_LINUX_MINOR << 8))
|
|
| (_NETXEN_NIC_LINUX_SUBVERSION);
|
|
adapter->pci_write_normalize(adapter, CRB_DRIVER_VERSION, i);
|
|
|
|
/* Handshake with the card before we register the devices. */
|
|
err = netxen_phantom_init(adapter, NETXEN_NIC_PEG_TUNE);
|
|
if (err)
|
|
goto err_out_free_offload;
|
|
|
|
} /* first_driver */
|
|
|
|
netxen_nic_flash_print(adapter);
|
|
|
|
if (NX_IS_REVISION_P3(revision_id)) {
|
|
adapter->hw_read_wx(adapter,
|
|
NETXEN_MIU_MN_CONTROL, &val, 4);
|
|
adapter->ahw.cut_through = (val & 0x4) ? 1 : 0;
|
|
dev_info(&pdev->dev, "firmware running in %s mode\n",
|
|
adapter->ahw.cut_through ? "cut through" : "legacy");
|
|
}
|
|
|
|
/*
|
|
* See if the firmware gave us a virtual-physical port mapping.
|
|
*/
|
|
adapter->physical_port = adapter->portnum;
|
|
i = adapter->pci_read_normalize(adapter, CRB_V2P(adapter->portnum));
|
|
if (i != 0x55555555)
|
|
adapter->physical_port = i;
|
|
|
|
adapter->flags &= ~(NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED);
|
|
|
|
netxen_set_msix_bit(pdev, 0);
|
|
|
|
if (NX_IS_REVISION_P3(revision_id)) {
|
|
if ((mem_len != NETXEN_PCI_128MB_SIZE) &&
|
|
mem_len != NETXEN_PCI_2MB_SIZE)
|
|
adapter->msix_supported = 0;
|
|
}
|
|
|
|
if (adapter->msix_supported) {
|
|
|
|
netxen_init_msix_entries(adapter);
|
|
|
|
if (pci_enable_msix(pdev, adapter->msix_entries,
|
|
MSIX_ENTRIES_PER_ADAPTER))
|
|
goto request_msi;
|
|
|
|
adapter->flags |= NETXEN_NIC_MSIX_ENABLED;
|
|
netxen_set_msix_bit(pdev, 1);
|
|
dev_info(&pdev->dev, "using msi-x interrupts\n");
|
|
|
|
} else {
|
|
request_msi:
|
|
if (use_msi && !pci_enable_msi(pdev)) {
|
|
adapter->flags |= NETXEN_NIC_MSI_ENABLED;
|
|
dev_info(&pdev->dev, "using msi interrupts\n");
|
|
} else
|
|
dev_info(&pdev->dev, "using legacy interrupts\n");
|
|
}
|
|
|
|
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
|
|
netdev->irq = adapter->msix_entries[0].vector;
|
|
else
|
|
netdev->irq = pdev->irq;
|
|
|
|
err = netxen_receive_peg_ready(adapter);
|
|
if (err)
|
|
goto err_out_disable_msi;
|
|
|
|
init_timer(&adapter->watchdog_timer);
|
|
adapter->watchdog_timer.function = &netxen_watchdog;
|
|
adapter->watchdog_timer.data = (unsigned long)adapter;
|
|
INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
|
|
INIT_WORK(&adapter->tx_timeout_task, netxen_tx_timeout_task);
|
|
|
|
err = netxen_read_mac_addr(adapter);
|
|
if (err)
|
|
dev_warn(&pdev->dev, "failed to read mac addr\n");
|
|
|
|
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_disable_msi;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, adapter);
|
|
|
|
switch (adapter->ahw.board_type) {
|
|
case NETXEN_NIC_GBE:
|
|
dev_info(&adapter->pdev->dev, "%s: GbE port initialized\n",
|
|
adapter->netdev->name);
|
|
break;
|
|
case NETXEN_NIC_XGBE:
|
|
dev_info(&adapter->pdev->dev, "%s: XGbE port initialized\n",
|
|
adapter->netdev->name);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_out_disable_msi:
|
|
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
|
|
pci_disable_msix(pdev);
|
|
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
|
pci_disable_msi(pdev);
|
|
|
|
err_out_free_offload:
|
|
if (first_driver)
|
|
netxen_free_adapter_offload(adapter);
|
|
|
|
err_out_iounmap:
|
|
if (db_ptr)
|
|
iounmap(db_ptr);
|
|
|
|
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_set_drvdata(pdev, NULL);
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
static void __devexit netxen_nic_remove(struct pci_dev *pdev)
|
|
{
|
|
struct netxen_adapter *adapter;
|
|
struct net_device *netdev;
|
|
|
|
adapter = pci_get_drvdata(pdev);
|
|
if (adapter == NULL)
|
|
return;
|
|
|
|
netdev = adapter->netdev;
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
|
|
netxen_free_hw_resources(adapter);
|
|
netxen_release_rx_buffers(adapter);
|
|
netxen_free_sw_resources(adapter);
|
|
|
|
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
|
|
netxen_p3_free_mac_list(adapter);
|
|
}
|
|
|
|
if (adapter->portnum == 0)
|
|
netxen_free_adapter_offload(adapter);
|
|
|
|
if (adapter->irq)
|
|
free_irq(adapter->irq, adapter);
|
|
|
|
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
|
|
pci_disable_msix(pdev);
|
|
if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
|
pci_disable_msi(pdev);
|
|
|
|
iounmap(adapter->ahw.db_base);
|
|
iounmap(adapter->ahw.pci_base0);
|
|
if (adapter->ahw.pci_base1 != NULL)
|
|
iounmap(adapter->ahw.pci_base1);
|
|
if (adapter->ahw.pci_base2 != NULL)
|
|
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 = netdev_priv(netdev);
|
|
int err = 0;
|
|
int ctx, ring;
|
|
irq_handler_t handler;
|
|
unsigned long flags = IRQF_SAMPLE_RANDOM;
|
|
|
|
if (adapter->driver_mismatch)
|
|
return -EIO;
|
|
|
|
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;
|
|
}
|
|
|
|
if (adapter->fw_major < 4)
|
|
adapter->max_rds_rings = 3;
|
|
else
|
|
adapter->max_rds_rings = 2;
|
|
|
|
err = netxen_alloc_sw_resources(adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Error in setting sw resources\n",
|
|
netdev->name);
|
|
return err;
|
|
}
|
|
|
|
netxen_nic_clear_stats(adapter);
|
|
|
|
err = netxen_alloc_hw_resources(adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Error in setting hw resources\n",
|
|
netdev->name);
|
|
goto err_out_free_sw;
|
|
}
|
|
|
|
if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
|
|
(adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
|
|
printk(KERN_ERR "%s: Firmware interrupt scheme is "
|
|
"incompatible with driver\n",
|
|
netdev->name);
|
|
adapter->driver_mismatch = 1;
|
|
goto err_out_free_hw;
|
|
}
|
|
|
|
if (adapter->fw_major < 4) {
|
|
adapter->crb_addr_cmd_producer =
|
|
crb_cmd_producer[adapter->portnum];
|
|
adapter->crb_addr_cmd_consumer =
|
|
crb_cmd_consumer[adapter->portnum];
|
|
|
|
netxen_nic_update_cmd_producer(adapter, 0);
|
|
netxen_nic_update_cmd_consumer(adapter, 0);
|
|
}
|
|
|
|
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
|
|
for (ring = 0; ring < adapter->max_rds_rings; ring++)
|
|
netxen_post_rx_buffers(adapter, ctx, ring);
|
|
}
|
|
if (NETXEN_IS_MSI_FAMILY(adapter))
|
|
handler = netxen_msi_intr;
|
|
else {
|
|
flags |= IRQF_SHARED;
|
|
handler = netxen_intr;
|
|
}
|
|
adapter->irq = netdev->irq;
|
|
err = request_irq(adapter->irq, handler,
|
|
flags, netdev->name, adapter);
|
|
if (err) {
|
|
printk(KERN_ERR "request_irq failed with: %d\n", err);
|
|
goto err_out_free_rxbuf;
|
|
}
|
|
|
|
adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
|
|
}
|
|
|
|
/* Done here again so that even if phantom sw overwrote it,
|
|
* we set it */
|
|
err = adapter->init_port(adapter, adapter->physical_port);
|
|
if (err) {
|
|
printk(KERN_ERR "%s: Failed to initialize port %d\n",
|
|
netxen_nic_driver_name, adapter->portnum);
|
|
goto err_out_free_irq;
|
|
}
|
|
adapter->macaddr_set(adapter, netdev->dev_addr);
|
|
|
|
netxen_nic_set_link_parameters(adapter);
|
|
|
|
netxen_set_multicast_list(netdev);
|
|
if (adapter->set_mtu)
|
|
adapter->set_mtu(adapter, netdev->mtu);
|
|
|
|
adapter->ahw.linkup = 0;
|
|
mod_timer(&adapter->watchdog_timer, jiffies);
|
|
|
|
napi_enable(&adapter->napi);
|
|
netxen_nic_enable_int(adapter);
|
|
|
|
netif_start_queue(netdev);
|
|
|
|
return 0;
|
|
|
|
err_out_free_irq:
|
|
free_irq(adapter->irq, adapter);
|
|
err_out_free_rxbuf:
|
|
netxen_release_rx_buffers(adapter);
|
|
err_out_free_hw:
|
|
netxen_free_hw_resources(adapter);
|
|
err_out_free_sw:
|
|
netxen_free_sw_resources(adapter);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
|
|
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);
|
|
|
|
netxen_release_tx_buffers(adapter);
|
|
|
|
FLUSH_SCHEDULED_WORK();
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bool netxen_tso_check(struct net_device *netdev,
|
|
struct cmd_desc_type0 *desc, struct sk_buff *skb)
|
|
{
|
|
bool tso = false;
|
|
u8 opcode = TX_ETHER_PKT;
|
|
|
|
if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) &&
|
|
skb_shinfo(skb)->gso_size > 0) {
|
|
|
|
desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size);
|
|
desc->total_hdr_length =
|
|
skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
|
|
opcode = (skb->protocol == htons(ETH_P_IPV6)) ?
|
|
TX_TCP_LSO6 : TX_TCP_LSO;
|
|
tso = true;
|
|
|
|
} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
u8 l4proto;
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
l4proto = ip_hdr(skb)->protocol;
|
|
|
|
if (l4proto == IPPROTO_TCP)
|
|
opcode = TX_TCP_PKT;
|
|
else if(l4proto == IPPROTO_UDP)
|
|
opcode = TX_UDP_PKT;
|
|
} else if (skb->protocol == htons(ETH_P_IPV6)) {
|
|
l4proto = ipv6_hdr(skb)->nexthdr;
|
|
|
|
if (l4proto == IPPROTO_TCP)
|
|
opcode = TX_TCPV6_PKT;
|
|
else if(l4proto == IPPROTO_UDP)
|
|
opcode = TX_UDPV6_PKT;
|
|
}
|
|
}
|
|
desc->tcp_hdr_offset = skb_transport_offset(skb);
|
|
desc->ip_hdr_offset = skb_network_offset(skb);
|
|
netxen_set_tx_flags_opcode(desc, 0, opcode);
|
|
return tso;
|
|
}
|
|
|
|
static void
|
|
netxen_clean_tx_dma_mapping(struct pci_dev *pdev,
|
|
struct netxen_cmd_buffer *pbuf, int last)
|
|
{
|
|
int k;
|
|
struct netxen_skb_frag *buffrag;
|
|
|
|
buffrag = &pbuf->frag_array[0];
|
|
pci_unmap_single(pdev, buffrag->dma,
|
|
buffrag->length, PCI_DMA_TODEVICE);
|
|
|
|
for (k = 1; k < last; k++) {
|
|
buffrag = &pbuf->frag_array[k];
|
|
pci_unmap_page(pdev, buffrag->dma,
|
|
buffrag->length, PCI_DMA_TODEVICE);
|
|
}
|
|
}
|
|
|
|
static int netxen_nic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct netxen_adapter *adapter = netdev_priv(netdev);
|
|
struct netxen_hardware_context *hw = &adapter->ahw;
|
|
unsigned int first_seg_len = skb->len - skb->data_len;
|
|
struct netxen_cmd_buffer *pbuf;
|
|
struct netxen_skb_frag *buffrag;
|
|
struct cmd_desc_type0 *hwdesc;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
dma_addr_t temp_dma;
|
|
int i, k;
|
|
|
|
u32 producer, consumer;
|
|
int frag_count, no_of_desc;
|
|
u32 num_txd = adapter->max_tx_desc_count;
|
|
bool is_tso = false;
|
|
|
|
frag_count = skb_shinfo(skb)->nr_frags + 1;
|
|
|
|
/* There 4 fragments per descriptor */
|
|
no_of_desc = (frag_count + 3) >> 2;
|
|
|
|
producer = adapter->cmd_producer;
|
|
smp_mb();
|
|
consumer = adapter->last_cmd_consumer;
|
|
if ((no_of_desc+2) > find_diff_among(producer, consumer, num_txd)) {
|
|
netif_stop_queue(netdev);
|
|
smp_mb();
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
/* Copy the descriptors into the hardware */
|
|
hwdesc = &hw->cmd_desc_head[producer];
|
|
memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
|
|
/* Take skb->data itself */
|
|
pbuf = &adapter->cmd_buf_arr[producer];
|
|
|
|
is_tso = netxen_tso_check(netdev, hwdesc, skb);
|
|
|
|
pbuf->skb = skb;
|
|
pbuf->frag_count = frag_count;
|
|
buffrag = &pbuf->frag_array[0];
|
|
temp_dma = pci_map_single(pdev, skb->data, first_seg_len,
|
|
PCI_DMA_TODEVICE);
|
|
if (pci_dma_mapping_error(pdev, temp_dma))
|
|
goto drop_packet;
|
|
|
|
buffrag->dma = temp_dma;
|
|
buffrag->length = first_seg_len;
|
|
netxen_set_tx_frags_len(hwdesc, frag_count, skb->len);
|
|
netxen_set_tx_port(hwdesc, adapter->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;
|
|
|
|
/* move to next desc. if there is a need */
|
|
if ((i & 0x3) == 0) {
|
|
k = 0;
|
|
producer = get_next_index(producer, num_txd);
|
|
hwdesc = &hw->cmd_desc_head[producer];
|
|
memset(hwdesc, 0, sizeof(struct cmd_desc_type0));
|
|
pbuf = &adapter->cmd_buf_arr[producer];
|
|
pbuf->skb = NULL;
|
|
}
|
|
frag = &skb_shinfo(skb)->frags[i - 1];
|
|
len = frag->size;
|
|
offset = frag->page_offset;
|
|
|
|
temp_len = len;
|
|
temp_dma = pci_map_page(pdev, frag->page, offset,
|
|
len, PCI_DMA_TODEVICE);
|
|
if (pci_dma_mapping_error(pdev, temp_dma)) {
|
|
netxen_clean_tx_dma_mapping(pdev, pbuf, i);
|
|
goto drop_packet;
|
|
}
|
|
|
|
buffrag++;
|
|
buffrag->dma = temp_dma;
|
|
buffrag->length = temp_len;
|
|
|
|
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 = cpu_to_le16(temp_len);
|
|
hwdesc->addr_buffer4 = cpu_to_le64(temp_dma);
|
|
break;
|
|
}
|
|
frag++;
|
|
}
|
|
producer = get_next_index(producer, num_txd);
|
|
|
|
/* For LSO, we need to copy the MAC/IP/TCP headers into
|
|
* the descriptor ring
|
|
*/
|
|
if (is_tso) {
|
|
int hdr_len, first_hdr_len, more_hdr;
|
|
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
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];
|
|
pbuf = &adapter->cmd_buf_arr[producer];
|
|
pbuf->skb = NULL;
|
|
|
|
/* copy the first 64 bytes */
|
|
memcpy(((void *)hwdesc) + 2,
|
|
(void *)(skb->data), first_hdr_len);
|
|
producer = get_next_index(producer, num_txd);
|
|
|
|
if (more_hdr) {
|
|
hwdesc = &hw->cmd_desc_head[producer];
|
|
pbuf = &adapter->cmd_buf_arr[producer];
|
|
pbuf->skb = NULL;
|
|
/* copy the next 64 bytes - should be enough except
|
|
* for pathological case
|
|
*/
|
|
skb_copy_from_linear_data_offset(skb, first_hdr_len,
|
|
hwdesc,
|
|
(hdr_len -
|
|
first_hdr_len));
|
|
producer = get_next_index(producer, num_txd);
|
|
}
|
|
}
|
|
|
|
adapter->cmd_producer = producer;
|
|
adapter->stats.txbytes += skb->len;
|
|
|
|
netxen_nic_update_cmd_producer(adapter, adapter->cmd_producer);
|
|
|
|
adapter->stats.xmitcalled++;
|
|
netdev->trans_start = jiffies;
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
drop_packet:
|
|
adapter->stats.txdropped++;
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int netxen_nic_check_temp(struct netxen_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
uint32_t temp, temp_state, temp_val;
|
|
int rv = 0;
|
|
|
|
temp = adapter->pci_read_normalize(adapter, CRB_TEMP_STATE);
|
|
|
|
temp_state = nx_get_temp_state(temp);
|
|
temp_val = nx_get_temp_val(temp);
|
|
|
|
if (temp_state == NX_TEMP_PANIC) {
|
|
printk(KERN_ALERT
|
|
"%s: Device temperature %d degrees C exceeds"
|
|
" maximum allowed. Hardware has been shut down.\n",
|
|
netxen_nic_driver_name, temp_val);
|
|
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
rv = 1;
|
|
} else if (temp_state == NX_TEMP_WARN) {
|
|
if (adapter->temp == NX_TEMP_NORMAL) {
|
|
printk(KERN_ALERT
|
|
"%s: Device temperature %d degrees C "
|
|
"exceeds operating range."
|
|
" Immediate action needed.\n",
|
|
netxen_nic_driver_name, temp_val);
|
|
}
|
|
} else {
|
|
if (adapter->temp == NX_TEMP_WARN) {
|
|
printk(KERN_INFO
|
|
"%s: Device temperature is now %d degrees C"
|
|
" in normal range.\n", netxen_nic_driver_name,
|
|
temp_val);
|
|
}
|
|
}
|
|
adapter->temp = temp_state;
|
|
return rv;
|
|
}
|
|
|
|
static void netxen_nic_handle_phy_intr(struct netxen_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
u32 val, port, linkup;
|
|
|
|
port = adapter->physical_port;
|
|
|
|
if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
|
|
val = adapter->pci_read_normalize(adapter, CRB_XG_STATE_P3);
|
|
val = XG_LINK_STATE_P3(adapter->ahw.pci_func, val);
|
|
linkup = (val == XG_LINK_UP_P3);
|
|
} else {
|
|
val = adapter->pci_read_normalize(adapter, CRB_XG_STATE);
|
|
if (adapter->ahw.board_type == NETXEN_NIC_GBE)
|
|
linkup = (val >> port) & 1;
|
|
else {
|
|
val = (val >> port*8) & 0xff;
|
|
linkup = (val == XG_LINK_UP);
|
|
}
|
|
}
|
|
|
|
if (adapter->ahw.linkup && !linkup) {
|
|
printk(KERN_INFO "%s: %s NIC Link is down\n",
|
|
netxen_nic_driver_name, netdev->name);
|
|
adapter->ahw.linkup = 0;
|
|
if (netif_running(netdev)) {
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
}
|
|
|
|
netxen_nic_set_link_parameters(adapter);
|
|
} else if (!adapter->ahw.linkup && linkup) {
|
|
printk(KERN_INFO "%s: %s NIC Link is up\n",
|
|
netxen_nic_driver_name, netdev->name);
|
|
adapter->ahw.linkup = 1;
|
|
if (netif_running(netdev)) {
|
|
netif_carrier_on(netdev);
|
|
netif_wake_queue(netdev);
|
|
}
|
|
|
|
netxen_nic_set_link_parameters(adapter);
|
|
}
|
|
}
|
|
|
|
static void netxen_watchdog(unsigned long v)
|
|
{
|
|
struct netxen_adapter *adapter = (struct netxen_adapter *)v;
|
|
|
|
SCHEDULE_WORK(&adapter->watchdog_task);
|
|
}
|
|
|
|
void netxen_watchdog_task(struct work_struct *work)
|
|
{
|
|
struct netxen_adapter *adapter =
|
|
container_of(work, struct netxen_adapter, watchdog_task);
|
|
|
|
if ((adapter->portnum == 0) && netxen_nic_check_temp(adapter))
|
|
return;
|
|
|
|
netxen_nic_handle_phy_intr(adapter);
|
|
|
|
if (netif_running(adapter->netdev))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
|
|
}
|
|
|
|
static void netxen_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct netxen_adapter *adapter = (struct netxen_adapter *)
|
|
netdev_priv(netdev);
|
|
SCHEDULE_WORK(&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);
|
|
|
|
printk(KERN_ERR "%s %s: transmit timeout, resetting.\n",
|
|
netxen_nic_driver_name, adapter->netdev->name);
|
|
|
|
netxen_nic_disable_int(adapter);
|
|
napi_disable(&adapter->napi);
|
|
|
|
adapter->netdev->trans_start = jiffies;
|
|
|
|
napi_enable(&adapter->napi);
|
|
netxen_nic_enable_int(adapter);
|
|
netif_wake_queue(adapter->netdev);
|
|
}
|
|
|
|
/*
|
|
* netxen_nic_get_stats - Get System Network Statistics
|
|
* @netdev: network interface device structure
|
|
*/
|
|
struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev)
|
|
{
|
|
struct netxen_adapter *adapter = netdev_priv(netdev);
|
|
struct net_device_stats *stats = &adapter->net_stats;
|
|
|
|
memset(stats, 0, sizeof(*stats));
|
|
|
|
/* total packets received */
|
|
stats->rx_packets = adapter->stats.no_rcv;
|
|
/* total packets transmitted */
|
|
stats->tx_packets = adapter->stats.xmitedframes +
|
|
adapter->stats.xmitfinished;
|
|
/* total bytes received */
|
|
stats->rx_bytes = adapter->stats.rxbytes;
|
|
/* total bytes transmitted */
|
|
stats->tx_bytes = adapter->stats.txbytes;
|
|
/* bad packets received */
|
|
stats->rx_errors = adapter->stats.rcvdbadskb;
|
|
/* packet transmit problems */
|
|
stats->tx_errors = adapter->stats.nocmddescriptor;
|
|
/* no space in linux buffers */
|
|
stats->rx_dropped = adapter->stats.rxdropped;
|
|
/* no space available in linux */
|
|
stats->tx_dropped = adapter->stats.txdropped;
|
|
|
|
return stats;
|
|
}
|
|
|
|
static irqreturn_t netxen_intr(int irq, void *data)
|
|
{
|
|
struct netxen_adapter *adapter = data;
|
|
u32 status = 0;
|
|
|
|
status = adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
|
|
|
|
if (!(status & adapter->legacy_intr.int_vec_bit))
|
|
return IRQ_NONE;
|
|
|
|
if (adapter->ahw.revision_id >= NX_P3_B1) {
|
|
/* check interrupt state machine, to be sure */
|
|
status = adapter->pci_read_immediate(adapter,
|
|
ISR_INT_STATE_REG);
|
|
if (!ISR_LEGACY_INT_TRIGGERED(status))
|
|
return IRQ_NONE;
|
|
|
|
} else {
|
|
unsigned long our_int = 0;
|
|
|
|
our_int = adapter->pci_read_normalize(adapter, CRB_INT_VECTOR);
|
|
|
|
/* not our interrupt */
|
|
if (!test_and_clear_bit((7 + adapter->portnum), &our_int))
|
|
return IRQ_NONE;
|
|
|
|
/* claim interrupt */
|
|
adapter->pci_write_normalize(adapter,
|
|
CRB_INT_VECTOR, (our_int & 0xffffffff));
|
|
}
|
|
|
|
/* clear interrupt */
|
|
if (adapter->fw_major < 4)
|
|
netxen_nic_disable_int(adapter);
|
|
|
|
adapter->pci_write_immediate(adapter,
|
|
adapter->legacy_intr.tgt_status_reg,
|
|
0xffffffff);
|
|
/* read twice to ensure write is flushed */
|
|
adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
|
|
adapter->pci_read_immediate(adapter, ISR_INT_VECTOR);
|
|
|
|
napi_schedule(&adapter->napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t netxen_msi_intr(int irq, void *data)
|
|
{
|
|
struct netxen_adapter *adapter = data;
|
|
|
|
/* clear interrupt */
|
|
adapter->pci_write_immediate(adapter,
|
|
msi_tgt_status[adapter->ahw.pci_func], 0xffffffff);
|
|
|
|
napi_schedule(&adapter->napi);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int netxen_nic_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct netxen_adapter *adapter = container_of(napi, struct netxen_adapter, napi);
|
|
int tx_complete;
|
|
int ctx;
|
|
int work_done;
|
|
|
|
tx_complete = netxen_process_cmd_ring(adapter);
|
|
|
|
work_done = 0;
|
|
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
|
|
/*
|
|
* Fairness issue. This will give undue weight to the
|
|
* receive context 0.
|
|
*/
|
|
|
|
/*
|
|
* To avoid starvation, we give each of our receivers,
|
|
* a fraction of the quota. Sometimes, it might happen that we
|
|
* have enough quota to process every packet, but since all the
|
|
* packets are on one context, it gets only half of the quota,
|
|
* and ends up not processing it.
|
|
*/
|
|
work_done += netxen_process_rcv_ring(adapter, ctx,
|
|
budget / MAX_RCV_CTX);
|
|
}
|
|
|
|
if ((work_done < budget) && tx_complete) {
|
|
netif_rx_complete(&adapter->napi);
|
|
netxen_nic_enable_int(adapter);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void netxen_nic_poll_controller(struct net_device *netdev)
|
|
{
|
|
struct netxen_adapter *adapter = netdev_priv(netdev);
|
|
disable_irq(adapter->irq);
|
|
netxen_intr(adapter->irq, adapter);
|
|
enable_irq(adapter->irq);
|
|
}
|
|
#endif
|
|
|
|
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")) == NULL)
|
|
return -ENOMEM;
|
|
|
|
return pci_register_driver(&netxen_driver);
|
|
}
|
|
|
|
module_init(netxen_init_module);
|
|
|
|
static void __exit netxen_exit_module(void)
|
|
{
|
|
pci_unregister_driver(&netxen_driver);
|
|
destroy_workqueue(netxen_workq);
|
|
}
|
|
|
|
module_exit(netxen_exit_module);
|