4355 lines
117 KiB
C
4355 lines
117 KiB
C
/*******************************************************************************
|
|
|
|
Intel(R) Gigabit Ethernet Linux driver
|
|
Copyright(c) 2007 Intel Corporation.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms and conditions of the GNU General Public License,
|
|
version 2, as published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
The full GNU General Public License is included in this distribution in
|
|
the file called "COPYING".
|
|
|
|
Contact Information:
|
|
e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
|
|
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/pagemap.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/ipv6.h>
|
|
#include <net/checksum.h>
|
|
#include <net/ip6_checksum.h>
|
|
#include <linux/mii.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/if_ether.h>
|
|
#ifdef CONFIG_DCA
|
|
#include <linux/dca.h>
|
|
#endif
|
|
#include "igb.h"
|
|
|
|
#define DRV_VERSION "1.2.45-k2"
|
|
char igb_driver_name[] = "igb";
|
|
char igb_driver_version[] = DRV_VERSION;
|
|
static const char igb_driver_string[] =
|
|
"Intel(R) Gigabit Ethernet Network Driver";
|
|
static const char igb_copyright[] = "Copyright (c) 2007 Intel Corporation.";
|
|
|
|
|
|
static const struct e1000_info *igb_info_tbl[] = {
|
|
[board_82575] = &e1000_82575_info,
|
|
};
|
|
|
|
static struct pci_device_id igb_pci_tbl[] = {
|
|
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 },
|
|
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 },
|
|
{ PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 },
|
|
/* required last entry */
|
|
{0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, igb_pci_tbl);
|
|
|
|
void igb_reset(struct igb_adapter *);
|
|
static int igb_setup_all_tx_resources(struct igb_adapter *);
|
|
static int igb_setup_all_rx_resources(struct igb_adapter *);
|
|
static void igb_free_all_tx_resources(struct igb_adapter *);
|
|
static void igb_free_all_rx_resources(struct igb_adapter *);
|
|
static void igb_free_tx_resources(struct igb_ring *);
|
|
static void igb_free_rx_resources(struct igb_ring *);
|
|
void igb_update_stats(struct igb_adapter *);
|
|
static int igb_probe(struct pci_dev *, const struct pci_device_id *);
|
|
static void __devexit igb_remove(struct pci_dev *pdev);
|
|
static int igb_sw_init(struct igb_adapter *);
|
|
static int igb_open(struct net_device *);
|
|
static int igb_close(struct net_device *);
|
|
static void igb_configure_tx(struct igb_adapter *);
|
|
static void igb_configure_rx(struct igb_adapter *);
|
|
static void igb_setup_rctl(struct igb_adapter *);
|
|
static void igb_clean_all_tx_rings(struct igb_adapter *);
|
|
static void igb_clean_all_rx_rings(struct igb_adapter *);
|
|
static void igb_clean_tx_ring(struct igb_ring *);
|
|
static void igb_clean_rx_ring(struct igb_ring *);
|
|
static void igb_set_multi(struct net_device *);
|
|
static void igb_update_phy_info(unsigned long);
|
|
static void igb_watchdog(unsigned long);
|
|
static void igb_watchdog_task(struct work_struct *);
|
|
static int igb_xmit_frame_ring_adv(struct sk_buff *, struct net_device *,
|
|
struct igb_ring *);
|
|
static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *);
|
|
static struct net_device_stats *igb_get_stats(struct net_device *);
|
|
static int igb_change_mtu(struct net_device *, int);
|
|
static int igb_set_mac(struct net_device *, void *);
|
|
static irqreturn_t igb_intr(int irq, void *);
|
|
static irqreturn_t igb_intr_msi(int irq, void *);
|
|
static irqreturn_t igb_msix_other(int irq, void *);
|
|
static irqreturn_t igb_msix_rx(int irq, void *);
|
|
static irqreturn_t igb_msix_tx(int irq, void *);
|
|
static int igb_clean_rx_ring_msix(struct napi_struct *, int);
|
|
#ifdef CONFIG_DCA
|
|
static void igb_update_rx_dca(struct igb_ring *);
|
|
static void igb_update_tx_dca(struct igb_ring *);
|
|
static void igb_setup_dca(struct igb_adapter *);
|
|
#endif /* CONFIG_DCA */
|
|
static bool igb_clean_tx_irq(struct igb_ring *);
|
|
static int igb_poll(struct napi_struct *, int);
|
|
static bool igb_clean_rx_irq_adv(struct igb_ring *, int *, int);
|
|
static void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
|
|
static int igb_ioctl(struct net_device *, struct ifreq *, int cmd);
|
|
static void igb_tx_timeout(struct net_device *);
|
|
static void igb_reset_task(struct work_struct *);
|
|
static void igb_vlan_rx_register(struct net_device *, struct vlan_group *);
|
|
static void igb_vlan_rx_add_vid(struct net_device *, u16);
|
|
static void igb_vlan_rx_kill_vid(struct net_device *, u16);
|
|
static void igb_restore_vlan(struct igb_adapter *);
|
|
|
|
static int igb_suspend(struct pci_dev *, pm_message_t);
|
|
#ifdef CONFIG_PM
|
|
static int igb_resume(struct pci_dev *);
|
|
#endif
|
|
static void igb_shutdown(struct pci_dev *);
|
|
#ifdef CONFIG_DCA
|
|
static int igb_notify_dca(struct notifier_block *, unsigned long, void *);
|
|
static struct notifier_block dca_notifier = {
|
|
.notifier_call = igb_notify_dca,
|
|
.next = NULL,
|
|
.priority = 0
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/* for netdump / net console */
|
|
static void igb_netpoll(struct net_device *);
|
|
#endif
|
|
|
|
static pci_ers_result_t igb_io_error_detected(struct pci_dev *,
|
|
pci_channel_state_t);
|
|
static pci_ers_result_t igb_io_slot_reset(struct pci_dev *);
|
|
static void igb_io_resume(struct pci_dev *);
|
|
|
|
static struct pci_error_handlers igb_err_handler = {
|
|
.error_detected = igb_io_error_detected,
|
|
.slot_reset = igb_io_slot_reset,
|
|
.resume = igb_io_resume,
|
|
};
|
|
|
|
|
|
static struct pci_driver igb_driver = {
|
|
.name = igb_driver_name,
|
|
.id_table = igb_pci_tbl,
|
|
.probe = igb_probe,
|
|
.remove = __devexit_p(igb_remove),
|
|
#ifdef CONFIG_PM
|
|
/* Power Managment Hooks */
|
|
.suspend = igb_suspend,
|
|
.resume = igb_resume,
|
|
#endif
|
|
.shutdown = igb_shutdown,
|
|
.err_handler = &igb_err_handler
|
|
};
|
|
|
|
MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
|
|
MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|
|
#ifdef DEBUG
|
|
/**
|
|
* igb_get_hw_dev_name - return device name string
|
|
* used by hardware layer to print debugging information
|
|
**/
|
|
char *igb_get_hw_dev_name(struct e1000_hw *hw)
|
|
{
|
|
struct igb_adapter *adapter = hw->back;
|
|
return adapter->netdev->name;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* igb_init_module - Driver Registration Routine
|
|
*
|
|
* igb_init_module is the first routine called when the driver is
|
|
* loaded. All it does is register with the PCI subsystem.
|
|
**/
|
|
static int __init igb_init_module(void)
|
|
{
|
|
int ret;
|
|
printk(KERN_INFO "%s - version %s\n",
|
|
igb_driver_string, igb_driver_version);
|
|
|
|
printk(KERN_INFO "%s\n", igb_copyright);
|
|
|
|
ret = pci_register_driver(&igb_driver);
|
|
#ifdef CONFIG_DCA
|
|
dca_register_notify(&dca_notifier);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
module_init(igb_init_module);
|
|
|
|
/**
|
|
* igb_exit_module - Driver Exit Cleanup Routine
|
|
*
|
|
* igb_exit_module is called just before the driver is removed
|
|
* from memory.
|
|
**/
|
|
static void __exit igb_exit_module(void)
|
|
{
|
|
#ifdef CONFIG_DCA
|
|
dca_unregister_notify(&dca_notifier);
|
|
#endif
|
|
pci_unregister_driver(&igb_driver);
|
|
}
|
|
|
|
module_exit(igb_exit_module);
|
|
|
|
/**
|
|
* igb_alloc_queues - Allocate memory for all rings
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* We allocate one ring per queue at run-time since we don't know the
|
|
* number of queues at compile-time.
|
|
**/
|
|
static int igb_alloc_queues(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
adapter->tx_ring = kcalloc(adapter->num_tx_queues,
|
|
sizeof(struct igb_ring), GFP_KERNEL);
|
|
if (!adapter->tx_ring)
|
|
return -ENOMEM;
|
|
|
|
adapter->rx_ring = kcalloc(adapter->num_rx_queues,
|
|
sizeof(struct igb_ring), GFP_KERNEL);
|
|
if (!adapter->rx_ring) {
|
|
kfree(adapter->tx_ring);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->tx_ring[i]);
|
|
ring->adapter = adapter;
|
|
ring->queue_index = i;
|
|
}
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->rx_ring[i]);
|
|
ring->adapter = adapter;
|
|
ring->queue_index = i;
|
|
ring->itr_register = E1000_ITR;
|
|
|
|
/* set a default napi handler for each rx_ring */
|
|
netif_napi_add(adapter->netdev, &ring->napi, igb_poll, 64);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define IGB_N0_QUEUE -1
|
|
static void igb_assign_vector(struct igb_adapter *adapter, int rx_queue,
|
|
int tx_queue, int msix_vector)
|
|
{
|
|
u32 msixbm = 0;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
/* The 82575 assigns vectors using a bitmask, which matches the
|
|
bitmask for the EICR/EIMS/EIMC registers. To assign one
|
|
or more queues to a vector, we write the appropriate bits
|
|
into the MSIXBM register for that vector. */
|
|
if (rx_queue > IGB_N0_QUEUE) {
|
|
msixbm = E1000_EICR_RX_QUEUE0 << rx_queue;
|
|
adapter->rx_ring[rx_queue].eims_value = msixbm;
|
|
}
|
|
if (tx_queue > IGB_N0_QUEUE) {
|
|
msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue;
|
|
adapter->tx_ring[tx_queue].eims_value =
|
|
E1000_EICR_TX_QUEUE0 << tx_queue;
|
|
}
|
|
array_wr32(E1000_MSIXBM(0), msix_vector, msixbm);
|
|
}
|
|
|
|
/**
|
|
* igb_configure_msix - Configure MSI-X hardware
|
|
*
|
|
* igb_configure_msix sets up the hardware to properly
|
|
* generate MSI-X interrupts.
|
|
**/
|
|
static void igb_configure_msix(struct igb_adapter *adapter)
|
|
{
|
|
u32 tmp;
|
|
int i, vector = 0;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
adapter->eims_enable_mask = 0;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct igb_ring *tx_ring = &adapter->tx_ring[i];
|
|
igb_assign_vector(adapter, IGB_N0_QUEUE, i, vector++);
|
|
adapter->eims_enable_mask |= tx_ring->eims_value;
|
|
if (tx_ring->itr_val)
|
|
writel(1000000000 / (tx_ring->itr_val * 256),
|
|
hw->hw_addr + tx_ring->itr_register);
|
|
else
|
|
writel(1, hw->hw_addr + tx_ring->itr_register);
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct igb_ring *rx_ring = &adapter->rx_ring[i];
|
|
igb_assign_vector(adapter, i, IGB_N0_QUEUE, vector++);
|
|
adapter->eims_enable_mask |= rx_ring->eims_value;
|
|
if (rx_ring->itr_val)
|
|
writel(1000000000 / (rx_ring->itr_val * 256),
|
|
hw->hw_addr + rx_ring->itr_register);
|
|
else
|
|
writel(1, hw->hw_addr + rx_ring->itr_register);
|
|
}
|
|
|
|
|
|
/* set vector for other causes, i.e. link changes */
|
|
array_wr32(E1000_MSIXBM(0), vector++,
|
|
E1000_EIMS_OTHER);
|
|
|
|
tmp = rd32(E1000_CTRL_EXT);
|
|
/* enable MSI-X PBA support*/
|
|
tmp |= E1000_CTRL_EXT_PBA_CLR;
|
|
|
|
/* Auto-Mask interrupts upon ICR read. */
|
|
tmp |= E1000_CTRL_EXT_EIAME;
|
|
tmp |= E1000_CTRL_EXT_IRCA;
|
|
|
|
wr32(E1000_CTRL_EXT, tmp);
|
|
adapter->eims_enable_mask |= E1000_EIMS_OTHER;
|
|
adapter->eims_other = E1000_EIMS_OTHER;
|
|
|
|
wrfl();
|
|
}
|
|
|
|
/**
|
|
* igb_request_msix - Initialize MSI-X interrupts
|
|
*
|
|
* igb_request_msix allocates MSI-X vectors and requests interrupts from the
|
|
* kernel.
|
|
**/
|
|
static int igb_request_msix(struct igb_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int i, err = 0, vector = 0;
|
|
|
|
vector = 0;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->tx_ring[i]);
|
|
sprintf(ring->name, "%s-tx%d", netdev->name, i);
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igb_msix_tx, 0, ring->name,
|
|
&(adapter->tx_ring[i]));
|
|
if (err)
|
|
goto out;
|
|
ring->itr_register = E1000_EITR(0) + (vector << 2);
|
|
ring->itr_val = adapter->itr;
|
|
vector++;
|
|
}
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->rx_ring[i]);
|
|
if (strlen(netdev->name) < (IFNAMSIZ - 5))
|
|
sprintf(ring->name, "%s-rx%d", netdev->name, i);
|
|
else
|
|
memcpy(ring->name, netdev->name, IFNAMSIZ);
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igb_msix_rx, 0, ring->name,
|
|
&(adapter->rx_ring[i]));
|
|
if (err)
|
|
goto out;
|
|
ring->itr_register = E1000_EITR(0) + (vector << 2);
|
|
ring->itr_val = adapter->itr;
|
|
/* overwrite the poll routine for MSIX, we've already done
|
|
* netif_napi_add */
|
|
ring->napi.poll = &igb_clean_rx_ring_msix;
|
|
vector++;
|
|
}
|
|
|
|
err = request_irq(adapter->msix_entries[vector].vector,
|
|
&igb_msix_other, 0, netdev->name, netdev);
|
|
if (err)
|
|
goto out;
|
|
|
|
igb_configure_msix(adapter);
|
|
return 0;
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static void igb_reset_interrupt_capability(struct igb_adapter *adapter)
|
|
{
|
|
if (adapter->msix_entries) {
|
|
pci_disable_msix(adapter->pdev);
|
|
kfree(adapter->msix_entries);
|
|
adapter->msix_entries = NULL;
|
|
} else if (adapter->msi_enabled)
|
|
pci_disable_msi(adapter->pdev);
|
|
return;
|
|
}
|
|
|
|
|
|
/**
|
|
* igb_set_interrupt_capability - set MSI or MSI-X if supported
|
|
*
|
|
* Attempt to configure interrupts using the best available
|
|
* capabilities of the hardware and kernel.
|
|
**/
|
|
static void igb_set_interrupt_capability(struct igb_adapter *adapter)
|
|
{
|
|
int err;
|
|
int numvecs, i;
|
|
|
|
numvecs = adapter->num_tx_queues + adapter->num_rx_queues + 1;
|
|
adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry),
|
|
GFP_KERNEL);
|
|
if (!adapter->msix_entries)
|
|
goto msi_only;
|
|
|
|
for (i = 0; i < numvecs; i++)
|
|
adapter->msix_entries[i].entry = i;
|
|
|
|
err = pci_enable_msix(adapter->pdev,
|
|
adapter->msix_entries,
|
|
numvecs);
|
|
if (err == 0)
|
|
return;
|
|
|
|
igb_reset_interrupt_capability(adapter);
|
|
|
|
/* If we can't do MSI-X, try MSI */
|
|
msi_only:
|
|
adapter->num_rx_queues = 1;
|
|
adapter->num_tx_queues = 1;
|
|
if (!pci_enable_msi(adapter->pdev))
|
|
adapter->msi_enabled = 1;
|
|
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
/* Notify the stack of the (possibly) reduced Tx Queue count. */
|
|
adapter->netdev->egress_subqueue_count = adapter->num_tx_queues;
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* igb_request_irq - initialize interrupts
|
|
*
|
|
* Attempts to configure interrupts using the best available
|
|
* capabilities of the hardware and kernel.
|
|
**/
|
|
static int igb_request_irq(struct igb_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int err = 0;
|
|
|
|
if (adapter->msix_entries) {
|
|
err = igb_request_msix(adapter);
|
|
if (!err)
|
|
goto request_done;
|
|
/* fall back to MSI */
|
|
igb_reset_interrupt_capability(adapter);
|
|
if (!pci_enable_msi(adapter->pdev))
|
|
adapter->msi_enabled = 1;
|
|
igb_free_all_tx_resources(adapter);
|
|
igb_free_all_rx_resources(adapter);
|
|
adapter->num_rx_queues = 1;
|
|
igb_alloc_queues(adapter);
|
|
} else {
|
|
wr32(E1000_MSIXBM(0), (E1000_EICR_RX_QUEUE0 |
|
|
E1000_EIMS_OTHER));
|
|
}
|
|
|
|
if (adapter->msi_enabled) {
|
|
err = request_irq(adapter->pdev->irq, &igb_intr_msi, 0,
|
|
netdev->name, netdev);
|
|
if (!err)
|
|
goto request_done;
|
|
/* fall back to legacy interrupts */
|
|
igb_reset_interrupt_capability(adapter);
|
|
adapter->msi_enabled = 0;
|
|
}
|
|
|
|
err = request_irq(adapter->pdev->irq, &igb_intr, IRQF_SHARED,
|
|
netdev->name, netdev);
|
|
|
|
if (err)
|
|
dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n",
|
|
err);
|
|
|
|
request_done:
|
|
return err;
|
|
}
|
|
|
|
static void igb_free_irq(struct igb_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
if (adapter->msix_entries) {
|
|
int vector = 0, i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
free_irq(adapter->msix_entries[vector++].vector,
|
|
&(adapter->tx_ring[i]));
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
free_irq(adapter->msix_entries[vector++].vector,
|
|
&(adapter->rx_ring[i]));
|
|
|
|
free_irq(adapter->msix_entries[vector++].vector, netdev);
|
|
return;
|
|
}
|
|
|
|
free_irq(adapter->pdev->irq, netdev);
|
|
}
|
|
|
|
/**
|
|
* igb_irq_disable - Mask off interrupt generation on the NIC
|
|
* @adapter: board private structure
|
|
**/
|
|
static void igb_irq_disable(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (adapter->msix_entries) {
|
|
wr32(E1000_EIAM, 0);
|
|
wr32(E1000_EIMC, ~0);
|
|
wr32(E1000_EIAC, 0);
|
|
}
|
|
|
|
wr32(E1000_IAM, 0);
|
|
wr32(E1000_IMC, ~0);
|
|
wrfl();
|
|
synchronize_irq(adapter->pdev->irq);
|
|
}
|
|
|
|
/**
|
|
* igb_irq_enable - Enable default interrupt generation settings
|
|
* @adapter: board private structure
|
|
**/
|
|
static void igb_irq_enable(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (adapter->msix_entries) {
|
|
wr32(E1000_EIAC, adapter->eims_enable_mask);
|
|
wr32(E1000_EIAM, adapter->eims_enable_mask);
|
|
wr32(E1000_EIMS, adapter->eims_enable_mask);
|
|
wr32(E1000_IMS, E1000_IMS_LSC);
|
|
} else {
|
|
wr32(E1000_IMS, IMS_ENABLE_MASK);
|
|
wr32(E1000_IAM, IMS_ENABLE_MASK);
|
|
}
|
|
}
|
|
|
|
static void igb_update_mng_vlan(struct igb_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
u16 vid = adapter->hw.mng_cookie.vlan_id;
|
|
u16 old_vid = adapter->mng_vlan_id;
|
|
if (adapter->vlgrp) {
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid)) {
|
|
if (adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN) {
|
|
igb_vlan_rx_add_vid(netdev, vid);
|
|
adapter->mng_vlan_id = vid;
|
|
} else
|
|
adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
|
|
|
|
if ((old_vid != (u16)IGB_MNG_VLAN_NONE) &&
|
|
(vid != old_vid) &&
|
|
!vlan_group_get_device(adapter->vlgrp, old_vid))
|
|
igb_vlan_rx_kill_vid(netdev, old_vid);
|
|
} else
|
|
adapter->mng_vlan_id = vid;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igb_release_hw_control - release control of the h/w to f/w
|
|
* @adapter: address of board private structure
|
|
*
|
|
* igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit.
|
|
* For ASF and Pass Through versions of f/w this means that the
|
|
* driver is no longer loaded.
|
|
*
|
|
**/
|
|
static void igb_release_hw_control(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ctrl_ext;
|
|
|
|
/* Let firmware take over control of h/w */
|
|
ctrl_ext = rd32(E1000_CTRL_EXT);
|
|
wr32(E1000_CTRL_EXT,
|
|
ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
|
|
}
|
|
|
|
|
|
/**
|
|
* igb_get_hw_control - get control of the h/w from f/w
|
|
* @adapter: address of board private structure
|
|
*
|
|
* igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit.
|
|
* For ASF and Pass Through versions of f/w this means that
|
|
* the driver is loaded.
|
|
*
|
|
**/
|
|
static void igb_get_hw_control(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ctrl_ext;
|
|
|
|
/* Let firmware know the driver has taken over */
|
|
ctrl_ext = rd32(E1000_CTRL_EXT);
|
|
wr32(E1000_CTRL_EXT,
|
|
ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
|
|
}
|
|
|
|
static void igb_init_manageability(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (adapter->en_mng_pt) {
|
|
u32 manc2h = rd32(E1000_MANC2H);
|
|
u32 manc = rd32(E1000_MANC);
|
|
|
|
/* enable receiving management packets to the host */
|
|
/* this will probably generate destination unreachable messages
|
|
* from the host OS, but the packets will be handled on SMBUS */
|
|
manc |= E1000_MANC_EN_MNG2HOST;
|
|
#define E1000_MNG2HOST_PORT_623 (1 << 5)
|
|
#define E1000_MNG2HOST_PORT_664 (1 << 6)
|
|
manc2h |= E1000_MNG2HOST_PORT_623;
|
|
manc2h |= E1000_MNG2HOST_PORT_664;
|
|
wr32(E1000_MANC2H, manc2h);
|
|
|
|
wr32(E1000_MANC, manc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igb_configure - configure the hardware for RX and TX
|
|
* @adapter: private board structure
|
|
**/
|
|
static void igb_configure(struct igb_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int i;
|
|
|
|
igb_get_hw_control(adapter);
|
|
igb_set_multi(netdev);
|
|
|
|
igb_restore_vlan(adapter);
|
|
igb_init_manageability(adapter);
|
|
|
|
igb_configure_tx(adapter);
|
|
igb_setup_rctl(adapter);
|
|
igb_configure_rx(adapter);
|
|
|
|
igb_rx_fifo_flush_82575(&adapter->hw);
|
|
|
|
/* call IGB_DESC_UNUSED which always leaves
|
|
* at least 1 descriptor unused to make sure
|
|
* next_to_use != next_to_clean */
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct igb_ring *ring = &adapter->rx_ring[i];
|
|
igb_alloc_rx_buffers_adv(ring, IGB_DESC_UNUSED(ring));
|
|
}
|
|
|
|
|
|
adapter->tx_queue_len = netdev->tx_queue_len;
|
|
}
|
|
|
|
|
|
/**
|
|
* igb_up - Open the interface and prepare it to handle traffic
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
int igb_up(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int i;
|
|
|
|
/* hardware has been reset, we need to reload some things */
|
|
igb_configure(adapter);
|
|
|
|
clear_bit(__IGB_DOWN, &adapter->state);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
napi_enable(&adapter->rx_ring[i].napi);
|
|
if (adapter->msix_entries)
|
|
igb_configure_msix(adapter);
|
|
|
|
/* Clear any pending interrupts. */
|
|
rd32(E1000_ICR);
|
|
igb_irq_enable(adapter);
|
|
|
|
/* Fire a link change interrupt to start the watchdog. */
|
|
wr32(E1000_ICS, E1000_ICS_LSC);
|
|
return 0;
|
|
}
|
|
|
|
void igb_down(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
u32 tctl, rctl;
|
|
int i;
|
|
|
|
/* signal that we're down so the interrupt handler does not
|
|
* reschedule our watchdog timer */
|
|
set_bit(__IGB_DOWN, &adapter->state);
|
|
|
|
/* disable receives in the hardware */
|
|
rctl = rd32(E1000_RCTL);
|
|
wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
|
|
/* flush and sleep below */
|
|
|
|
netif_stop_queue(netdev);
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
netif_stop_subqueue(netdev, i);
|
|
#endif
|
|
|
|
/* disable transmits in the hardware */
|
|
tctl = rd32(E1000_TCTL);
|
|
tctl &= ~E1000_TCTL_EN;
|
|
wr32(E1000_TCTL, tctl);
|
|
/* flush both disables and wait for them to finish */
|
|
wrfl();
|
|
msleep(10);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
napi_disable(&adapter->rx_ring[i].napi);
|
|
|
|
igb_irq_disable(adapter);
|
|
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
del_timer_sync(&adapter->phy_info_timer);
|
|
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
netif_carrier_off(netdev);
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
|
|
if (!pci_channel_offline(adapter->pdev))
|
|
igb_reset(adapter);
|
|
igb_clean_all_tx_rings(adapter);
|
|
igb_clean_all_rx_rings(adapter);
|
|
}
|
|
|
|
void igb_reinit_locked(struct igb_adapter *adapter)
|
|
{
|
|
WARN_ON(in_interrupt());
|
|
while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
igb_down(adapter);
|
|
igb_up(adapter);
|
|
clear_bit(__IGB_RESETTING, &adapter->state);
|
|
}
|
|
|
|
void igb_reset(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct e1000_fc_info *fc = &adapter->hw.fc;
|
|
u32 pba = 0, tx_space, min_tx_space, min_rx_space;
|
|
u16 hwm;
|
|
|
|
/* Repartition Pba for greater than 9k mtu
|
|
* To take effect CTRL.RST is required.
|
|
*/
|
|
pba = E1000_PBA_34K;
|
|
|
|
if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) {
|
|
/* adjust PBA for jumbo frames */
|
|
wr32(E1000_PBA, pba);
|
|
|
|
/* To maintain wire speed transmits, the Tx FIFO should be
|
|
* large enough to accommodate two full transmit packets,
|
|
* rounded up to the next 1KB and expressed in KB. Likewise,
|
|
* the Rx FIFO should be large enough to accommodate at least
|
|
* one full receive packet and is similarly rounded up and
|
|
* expressed in KB. */
|
|
pba = rd32(E1000_PBA);
|
|
/* upper 16 bits has Tx packet buffer allocation size in KB */
|
|
tx_space = pba >> 16;
|
|
/* lower 16 bits has Rx packet buffer allocation size in KB */
|
|
pba &= 0xffff;
|
|
/* the tx fifo also stores 16 bytes of information about the tx
|
|
* but don't include ethernet FCS because hardware appends it */
|
|
min_tx_space = (adapter->max_frame_size +
|
|
sizeof(struct e1000_tx_desc) -
|
|
ETH_FCS_LEN) * 2;
|
|
min_tx_space = ALIGN(min_tx_space, 1024);
|
|
min_tx_space >>= 10;
|
|
/* software strips receive CRC, so leave room for it */
|
|
min_rx_space = adapter->max_frame_size;
|
|
min_rx_space = ALIGN(min_rx_space, 1024);
|
|
min_rx_space >>= 10;
|
|
|
|
/* If current Tx allocation is less than the min Tx FIFO size,
|
|
* and the min Tx FIFO size is less than the current Rx FIFO
|
|
* allocation, take space away from current Rx allocation */
|
|
if (tx_space < min_tx_space &&
|
|
((min_tx_space - tx_space) < pba)) {
|
|
pba = pba - (min_tx_space - tx_space);
|
|
|
|
/* if short on rx space, rx wins and must trump tx
|
|
* adjustment */
|
|
if (pba < min_rx_space)
|
|
pba = min_rx_space;
|
|
}
|
|
}
|
|
wr32(E1000_PBA, pba);
|
|
|
|
/* flow control settings */
|
|
/* The high water mark must be low enough to fit one full frame
|
|
* (or the size used for early receive) above it in the Rx FIFO.
|
|
* Set it to the lower of:
|
|
* - 90% of the Rx FIFO size, or
|
|
* - the full Rx FIFO size minus one full frame */
|
|
hwm = min(((pba << 10) * 9 / 10),
|
|
((pba << 10) - adapter->max_frame_size));
|
|
|
|
fc->high_water = hwm & 0xFFF8; /* 8-byte granularity */
|
|
fc->low_water = fc->high_water - 8;
|
|
fc->pause_time = 0xFFFF;
|
|
fc->send_xon = 1;
|
|
fc->type = fc->original_type;
|
|
|
|
/* Allow time for pending master requests to run */
|
|
adapter->hw.mac.ops.reset_hw(&adapter->hw);
|
|
wr32(E1000_WUC, 0);
|
|
|
|
if (adapter->hw.mac.ops.init_hw(&adapter->hw))
|
|
dev_err(&adapter->pdev->dev, "Hardware Error\n");
|
|
|
|
igb_update_mng_vlan(adapter);
|
|
|
|
/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
|
|
wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE);
|
|
|
|
igb_reset_adaptive(&adapter->hw);
|
|
if (adapter->hw.phy.ops.get_phy_info)
|
|
adapter->hw.phy.ops.get_phy_info(&adapter->hw);
|
|
}
|
|
|
|
/**
|
|
* igb_is_need_ioport - determine if an adapter needs ioport resources or not
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* Returns true if an adapter needs ioport resources
|
|
**/
|
|
static int igb_is_need_ioport(struct pci_dev *pdev)
|
|
{
|
|
switch (pdev->device) {
|
|
/* Currently there are no adapters that need ioport resources */
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igb_probe - Device Initialization Routine
|
|
* @pdev: PCI device information struct
|
|
* @ent: entry in igb_pci_tbl
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
*
|
|
* igb_probe initializes an adapter identified by a pci_dev structure.
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
* and a hardware reset occur.
|
|
**/
|
|
static int __devinit igb_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct igb_adapter *adapter;
|
|
struct e1000_hw *hw;
|
|
const struct e1000_info *ei = igb_info_tbl[ent->driver_data];
|
|
unsigned long mmio_start, mmio_len;
|
|
int i, err, pci_using_dac;
|
|
u16 eeprom_data = 0;
|
|
u16 eeprom_apme_mask = IGB_EEPROM_APME;
|
|
u32 part_num;
|
|
int bars, need_ioport;
|
|
|
|
/* do not allocate ioport bars when not needed */
|
|
need_ioport = igb_is_need_ioport(pdev);
|
|
if (need_ioport) {
|
|
bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
|
|
err = pci_enable_device(pdev);
|
|
} else {
|
|
bars = pci_select_bars(pdev, IORESOURCE_MEM);
|
|
err = pci_enable_device_mem(pdev);
|
|
}
|
|
if (err)
|
|
return err;
|
|
|
|
pci_using_dac = 0;
|
|
err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (!err) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
|
|
if (!err)
|
|
pci_using_dac = 1;
|
|
} else {
|
|
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (err) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "No usable DMA "
|
|
"configuration, aborting\n");
|
|
goto err_dma;
|
|
}
|
|
}
|
|
}
|
|
|
|
err = pci_request_selected_regions(pdev, bars, igb_driver_name);
|
|
if (err)
|
|
goto err_pci_reg;
|
|
|
|
pci_set_master(pdev);
|
|
pci_save_state(pdev);
|
|
|
|
err = -ENOMEM;
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), IGB_MAX_TX_QUEUES);
|
|
#else
|
|
netdev = alloc_etherdev(sizeof(struct igb_adapter));
|
|
#endif /* CONFIG_NETDEVICES_MULTIQUEUE */
|
|
if (!netdev)
|
|
goto err_alloc_etherdev;
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
adapter = netdev_priv(netdev);
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
hw = &adapter->hw;
|
|
hw->back = adapter;
|
|
adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE;
|
|
adapter->bars = bars;
|
|
adapter->need_ioport = need_ioport;
|
|
|
|
mmio_start = pci_resource_start(pdev, 0);
|
|
mmio_len = pci_resource_len(pdev, 0);
|
|
|
|
err = -EIO;
|
|
adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
|
|
if (!adapter->hw.hw_addr)
|
|
goto err_ioremap;
|
|
|
|
netdev->open = &igb_open;
|
|
netdev->stop = &igb_close;
|
|
netdev->get_stats = &igb_get_stats;
|
|
netdev->set_multicast_list = &igb_set_multi;
|
|
netdev->set_mac_address = &igb_set_mac;
|
|
netdev->change_mtu = &igb_change_mtu;
|
|
netdev->do_ioctl = &igb_ioctl;
|
|
igb_set_ethtool_ops(netdev);
|
|
netdev->tx_timeout = &igb_tx_timeout;
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
netdev->vlan_rx_register = igb_vlan_rx_register;
|
|
netdev->vlan_rx_add_vid = igb_vlan_rx_add_vid;
|
|
netdev->vlan_rx_kill_vid = igb_vlan_rx_kill_vid;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
netdev->poll_controller = igb_netpoll;
|
|
#endif
|
|
netdev->hard_start_xmit = &igb_xmit_frame_adv;
|
|
|
|
strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
|
|
|
|
netdev->mem_start = mmio_start;
|
|
netdev->mem_end = mmio_start + mmio_len;
|
|
|
|
/* PCI config space info */
|
|
hw->vendor_id = pdev->vendor;
|
|
hw->device_id = pdev->device;
|
|
hw->revision_id = pdev->revision;
|
|
hw->subsystem_vendor_id = pdev->subsystem_vendor;
|
|
hw->subsystem_device_id = pdev->subsystem_device;
|
|
|
|
/* setup the private structure */
|
|
hw->back = adapter;
|
|
/* Copy the default MAC, PHY and NVM function pointers */
|
|
memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
|
|
memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
|
|
memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops));
|
|
/* Initialize skew-specific constants */
|
|
err = ei->get_invariants(hw);
|
|
if (err)
|
|
goto err_hw_init;
|
|
|
|
err = igb_sw_init(adapter);
|
|
if (err)
|
|
goto err_sw_init;
|
|
|
|
igb_get_bus_info_pcie(hw);
|
|
|
|
hw->phy.autoneg_wait_to_complete = false;
|
|
hw->mac.adaptive_ifs = true;
|
|
|
|
/* Copper options */
|
|
if (hw->phy.media_type == e1000_media_type_copper) {
|
|
hw->phy.mdix = AUTO_ALL_MODES;
|
|
hw->phy.disable_polarity_correction = false;
|
|
hw->phy.ms_type = e1000_ms_hw_default;
|
|
}
|
|
|
|
if (igb_check_reset_block(hw))
|
|
dev_info(&pdev->dev,
|
|
"PHY reset is blocked due to SOL/IDER session.\n");
|
|
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_HW_CSUM |
|
|
NETIF_F_HW_VLAN_TX |
|
|
NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_HW_VLAN_FILTER;
|
|
|
|
netdev->features |= NETIF_F_TSO;
|
|
netdev->features |= NETIF_F_TSO6;
|
|
|
|
netdev->vlan_features |= NETIF_F_TSO;
|
|
netdev->vlan_features |= NETIF_F_TSO6;
|
|
netdev->vlan_features |= NETIF_F_HW_CSUM;
|
|
netdev->vlan_features |= NETIF_F_SG;
|
|
|
|
if (pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
netdev->features |= NETIF_F_MULTI_QUEUE;
|
|
#endif
|
|
|
|
netdev->features |= NETIF_F_LLTX;
|
|
adapter->en_mng_pt = igb_enable_mng_pass_thru(&adapter->hw);
|
|
|
|
/* before reading the NVM, reset the controller to put the device in a
|
|
* known good starting state */
|
|
hw->mac.ops.reset_hw(hw);
|
|
|
|
/* make sure the NVM is good */
|
|
if (igb_validate_nvm_checksum(hw) < 0) {
|
|
dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n");
|
|
err = -EIO;
|
|
goto err_eeprom;
|
|
}
|
|
|
|
/* copy the MAC address out of the NVM */
|
|
if (hw->mac.ops.read_mac_addr(hw))
|
|
dev_err(&pdev->dev, "NVM Read Error\n");
|
|
|
|
memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len);
|
|
memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len);
|
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr)) {
|
|
dev_err(&pdev->dev, "Invalid MAC Address\n");
|
|
err = -EIO;
|
|
goto err_eeprom;
|
|
}
|
|
|
|
init_timer(&adapter->watchdog_timer);
|
|
adapter->watchdog_timer.function = &igb_watchdog;
|
|
adapter->watchdog_timer.data = (unsigned long) adapter;
|
|
|
|
init_timer(&adapter->phy_info_timer);
|
|
adapter->phy_info_timer.function = &igb_update_phy_info;
|
|
adapter->phy_info_timer.data = (unsigned long) adapter;
|
|
|
|
INIT_WORK(&adapter->reset_task, igb_reset_task);
|
|
INIT_WORK(&adapter->watchdog_task, igb_watchdog_task);
|
|
|
|
/* Initialize link & ring properties that are user-changeable */
|
|
adapter->tx_ring->count = 256;
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
adapter->tx_ring[i].count = adapter->tx_ring->count;
|
|
adapter->rx_ring->count = 256;
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
adapter->rx_ring[i].count = adapter->rx_ring->count;
|
|
|
|
adapter->fc_autoneg = true;
|
|
hw->mac.autoneg = true;
|
|
hw->phy.autoneg_advertised = 0x2f;
|
|
|
|
hw->fc.original_type = e1000_fc_default;
|
|
hw->fc.type = e1000_fc_default;
|
|
|
|
adapter->itr_setting = 3;
|
|
adapter->itr = IGB_START_ITR;
|
|
|
|
igb_validate_mdi_setting(hw);
|
|
|
|
adapter->rx_csum = 1;
|
|
|
|
/* Initial Wake on LAN setting If APM wake is enabled in the EEPROM,
|
|
* enable the ACPI Magic Packet filter
|
|
*/
|
|
|
|
if (hw->bus.func == 0 ||
|
|
hw->device_id == E1000_DEV_ID_82575EB_COPPER)
|
|
hw->nvm.ops.read_nvm(hw, NVM_INIT_CONTROL3_PORT_A, 1,
|
|
&eeprom_data);
|
|
|
|
if (eeprom_data & eeprom_apme_mask)
|
|
adapter->eeprom_wol |= E1000_WUFC_MAG;
|
|
|
|
/* now that we have the eeprom settings, apply the special cases where
|
|
* the eeprom may be wrong or the board simply won't support wake on
|
|
* lan on a particular port */
|
|
switch (pdev->device) {
|
|
case E1000_DEV_ID_82575GB_QUAD_COPPER:
|
|
adapter->eeprom_wol = 0;
|
|
break;
|
|
case E1000_DEV_ID_82575EB_FIBER_SERDES:
|
|
/* Wake events only supported on port A for dual fiber
|
|
* regardless of eeprom setting */
|
|
if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1)
|
|
adapter->eeprom_wol = 0;
|
|
break;
|
|
}
|
|
|
|
/* initialize the wol settings based on the eeprom settings */
|
|
adapter->wol = adapter->eeprom_wol;
|
|
|
|
/* reset the hardware with the new settings */
|
|
igb_reset(adapter);
|
|
|
|
/* let the f/w know that the h/w is now under the control of the
|
|
* driver. */
|
|
igb_get_hw_control(adapter);
|
|
|
|
/* tell the stack to leave us alone until igb_open() is called */
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
netif_stop_subqueue(netdev, i);
|
|
#endif
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
err = register_netdev(netdev);
|
|
if (err)
|
|
goto err_register;
|
|
|
|
#ifdef CONFIG_DCA
|
|
if (dca_add_requester(&pdev->dev) == 0) {
|
|
adapter->dca_enabled = true;
|
|
dev_info(&pdev->dev, "DCA enabled\n");
|
|
/* Always use CB2 mode, difference is masked
|
|
* in the CB driver. */
|
|
wr32(E1000_DCA_CTRL, 2);
|
|
igb_setup_dca(adapter);
|
|
}
|
|
#endif
|
|
|
|
dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n");
|
|
/* print bus type/speed/width info */
|
|
dev_info(&pdev->dev,
|
|
"%s: (PCIe:%s:%s) %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
netdev->name,
|
|
((hw->bus.speed == e1000_bus_speed_2500)
|
|
? "2.5Gb/s" : "unknown"),
|
|
((hw->bus.width == e1000_bus_width_pcie_x4)
|
|
? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x1)
|
|
? "Width x1" : "unknown"),
|
|
netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2],
|
|
netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]);
|
|
|
|
igb_read_part_num(hw, &part_num);
|
|
dev_info(&pdev->dev, "%s: PBA No: %06x-%03x\n", netdev->name,
|
|
(part_num >> 8), (part_num & 0xff));
|
|
|
|
dev_info(&pdev->dev,
|
|
"Using %s interrupts. %d rx queue(s), %d tx queue(s)\n",
|
|
adapter->msix_entries ? "MSI-X" :
|
|
adapter->msi_enabled ? "MSI" : "legacy",
|
|
adapter->num_rx_queues, adapter->num_tx_queues);
|
|
|
|
return 0;
|
|
|
|
err_register:
|
|
igb_release_hw_control(adapter);
|
|
err_eeprom:
|
|
if (!igb_check_reset_block(hw))
|
|
hw->phy.ops.reset_phy(hw);
|
|
|
|
if (hw->flash_address)
|
|
iounmap(hw->flash_address);
|
|
|
|
igb_remove_device(hw);
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
err_sw_init:
|
|
err_hw_init:
|
|
iounmap(hw->hw_addr);
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_selected_regions(pdev, bars);
|
|
err_pci_reg:
|
|
err_dma:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igb_remove - Device Removal Routine
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* igb_remove is called by the PCI subsystem to alert the driver
|
|
* that it should release a PCI device. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
**/
|
|
static void __devexit igb_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/* flush_scheduled work may reschedule our watchdog task, so
|
|
* explicitly disable watchdog tasks from being rescheduled */
|
|
set_bit(__IGB_DOWN, &adapter->state);
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
del_timer_sync(&adapter->phy_info_timer);
|
|
|
|
flush_scheduled_work();
|
|
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled) {
|
|
dev_info(&pdev->dev, "DCA disabled\n");
|
|
dca_remove_requester(&pdev->dev);
|
|
adapter->dca_enabled = false;
|
|
wr32(E1000_DCA_CTRL, 1);
|
|
}
|
|
#endif
|
|
|
|
/* Release control of h/w to f/w. If f/w is AMT enabled, this
|
|
* would have already happened in close and is redundant. */
|
|
igb_release_hw_control(adapter);
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
if (!igb_check_reset_block(&adapter->hw))
|
|
adapter->hw.phy.ops.reset_phy(&adapter->hw);
|
|
|
|
igb_remove_device(&adapter->hw);
|
|
igb_reset_interrupt_capability(adapter);
|
|
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
|
|
iounmap(adapter->hw.hw_addr);
|
|
if (adapter->hw.flash_address)
|
|
iounmap(adapter->hw.flash_address);
|
|
pci_release_selected_regions(pdev, adapter->bars);
|
|
|
|
free_netdev(netdev);
|
|
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/**
|
|
* igb_sw_init - Initialize general software structures (struct igb_adapter)
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* igb_sw_init initializes the Adapter private data structure.
|
|
* Fields are initialized based on PCI device information and
|
|
* OS network device settings (MTU size).
|
|
**/
|
|
static int __devinit igb_sw_init(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word);
|
|
|
|
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
adapter->rx_ps_hdr_size = 0; /* disable packet split */
|
|
adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
|
|
|
|
/* Number of supported queues. */
|
|
/* Having more queues than CPUs doesn't make sense. */
|
|
adapter->num_rx_queues = min((u32)IGB_MAX_RX_QUEUES, (u32)num_online_cpus());
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
adapter->num_tx_queues = min(IGB_MAX_TX_QUEUES, num_online_cpus());
|
|
#else
|
|
adapter->num_tx_queues = 1;
|
|
#endif /* CONFIG_NET_MULTI_QUEUE_DEVICE */
|
|
|
|
/* This call may decrease the number of queues depending on
|
|
* interrupt mode. */
|
|
igb_set_interrupt_capability(adapter);
|
|
|
|
if (igb_alloc_queues(adapter)) {
|
|
dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Explicitly disable IRQ since the NIC can be in any state. */
|
|
igb_irq_disable(adapter);
|
|
|
|
set_bit(__IGB_DOWN, &adapter->state);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igb_open - Called when a network interface is made active
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0 on success, negative value on failure
|
|
*
|
|
* The open entry point is called when a network interface is made
|
|
* active by the system (IFF_UP). At this point all resources needed
|
|
* for transmit and receive operations are allocated, the interrupt
|
|
* handler is registered with the OS, the watchdog timer is started,
|
|
* and the stack is notified that the interface is ready.
|
|
**/
|
|
static int igb_open(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int err;
|
|
int i;
|
|
|
|
/* disallow open during test */
|
|
if (test_bit(__IGB_TESTING, &adapter->state))
|
|
return -EBUSY;
|
|
|
|
/* allocate transmit descriptors */
|
|
err = igb_setup_all_tx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_tx;
|
|
|
|
/* allocate receive descriptors */
|
|
err = igb_setup_all_rx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_rx;
|
|
|
|
/* e1000_power_up_phy(adapter); */
|
|
|
|
adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN))
|
|
igb_update_mng_vlan(adapter);
|
|
|
|
/* before we allocate an interrupt, we must be ready to handle it.
|
|
* Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
|
|
* as soon as we call pci_request_irq, so we have to setup our
|
|
* clean_rx handler before we do so. */
|
|
igb_configure(adapter);
|
|
|
|
err = igb_request_irq(adapter);
|
|
if (err)
|
|
goto err_req_irq;
|
|
|
|
/* From here on the code is the same as igb_up() */
|
|
clear_bit(__IGB_DOWN, &adapter->state);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
napi_enable(&adapter->rx_ring[i].napi);
|
|
|
|
/* Clear any pending interrupts. */
|
|
rd32(E1000_ICR);
|
|
|
|
igb_irq_enable(adapter);
|
|
|
|
/* Fire a link status change interrupt to start the watchdog. */
|
|
wr32(E1000_ICS, E1000_ICS_LSC);
|
|
|
|
return 0;
|
|
|
|
err_req_irq:
|
|
igb_release_hw_control(adapter);
|
|
/* e1000_power_down_phy(adapter); */
|
|
igb_free_all_rx_resources(adapter);
|
|
err_setup_rx:
|
|
igb_free_all_tx_resources(adapter);
|
|
err_setup_tx:
|
|
igb_reset(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igb_close - Disables a network interface
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0, this is not allowed to fail
|
|
*
|
|
* The close entry point is called when an interface is de-activated
|
|
* by the OS. The hardware is still under the driver's control, but
|
|
* needs to be disabled. A global MAC reset is issued to stop the
|
|
* hardware, and all transmit and receive resources are freed.
|
|
**/
|
|
static int igb_close(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
|
|
WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
|
|
igb_down(adapter);
|
|
|
|
igb_free_irq(adapter);
|
|
|
|
igb_free_all_tx_resources(adapter);
|
|
igb_free_all_rx_resources(adapter);
|
|
|
|
/* kill manageability vlan ID if supported, but not if a vlan with
|
|
* the same ID is registered on the host OS (let 8021q kill it) */
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
|
|
!(adapter->vlgrp &&
|
|
vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id)))
|
|
igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igb_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
* @tx_ring: tx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
|
|
int igb_setup_tx_resources(struct igb_adapter *adapter,
|
|
struct igb_ring *tx_ring)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
int size;
|
|
|
|
size = sizeof(struct igb_buffer) * tx_ring->count;
|
|
tx_ring->buffer_info = vmalloc(size);
|
|
if (!tx_ring->buffer_info)
|
|
goto err;
|
|
memset(tx_ring->buffer_info, 0, size);
|
|
|
|
/* round up to nearest 4K */
|
|
tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc)
|
|
+ sizeof(u32);
|
|
tx_ring->size = ALIGN(tx_ring->size, 4096);
|
|
|
|
tx_ring->desc = pci_alloc_consistent(pdev, tx_ring->size,
|
|
&tx_ring->dma);
|
|
|
|
if (!tx_ring->desc)
|
|
goto err;
|
|
|
|
tx_ring->adapter = adapter;
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
return 0;
|
|
|
|
err:
|
|
vfree(tx_ring->buffer_info);
|
|
dev_err(&adapter->pdev->dev,
|
|
"Unable to allocate memory for the transmit descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* igb_setup_all_tx_resources - wrapper to allocate Tx resources
|
|
* (Descriptors) for all queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
static int igb_setup_all_tx_resources(struct igb_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
int r_idx;
|
|
#endif
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
err = igb_setup_tx_resources(adapter, &adapter->tx_ring[i]);
|
|
if (err) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"Allocation for Tx Queue %u failed\n", i);
|
|
for (i--; i >= 0; i--)
|
|
igb_free_tx_resources(&adapter->tx_ring[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
for (i = 0; i < IGB_MAX_TX_QUEUES; i++) {
|
|
r_idx = i % adapter->num_tx_queues;
|
|
adapter->multi_tx_table[i] = &adapter->tx_ring[r_idx];
|
|
}
|
|
#endif
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igb_configure_tx - Configure transmit Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Tx unit of the MAC after a reset.
|
|
**/
|
|
static void igb_configure_tx(struct igb_adapter *adapter)
|
|
{
|
|
u64 tdba, tdwba;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 tctl;
|
|
u32 txdctl, txctrl;
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->tx_ring[i]);
|
|
|
|
wr32(E1000_TDLEN(i),
|
|
ring->count * sizeof(struct e1000_tx_desc));
|
|
tdba = ring->dma;
|
|
wr32(E1000_TDBAL(i),
|
|
tdba & 0x00000000ffffffffULL);
|
|
wr32(E1000_TDBAH(i), tdba >> 32);
|
|
|
|
tdwba = ring->dma + ring->count * sizeof(struct e1000_tx_desc);
|
|
tdwba |= 1; /* enable head wb */
|
|
wr32(E1000_TDWBAL(i),
|
|
tdwba & 0x00000000ffffffffULL);
|
|
wr32(E1000_TDWBAH(i), tdwba >> 32);
|
|
|
|
ring->head = E1000_TDH(i);
|
|
ring->tail = E1000_TDT(i);
|
|
writel(0, hw->hw_addr + ring->tail);
|
|
writel(0, hw->hw_addr + ring->head);
|
|
txdctl = rd32(E1000_TXDCTL(i));
|
|
txdctl |= E1000_TXDCTL_QUEUE_ENABLE;
|
|
wr32(E1000_TXDCTL(i), txdctl);
|
|
|
|
/* Turn off Relaxed Ordering on head write-backs. The
|
|
* writebacks MUST be delivered in order or it will
|
|
* completely screw up our bookeeping.
|
|
*/
|
|
txctrl = rd32(E1000_DCA_TXCTRL(i));
|
|
txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN;
|
|
wr32(E1000_DCA_TXCTRL(i), txctrl);
|
|
}
|
|
|
|
|
|
|
|
/* Use the default values for the Tx Inter Packet Gap (IPG) timer */
|
|
|
|
/* Program the Transmit Control Register */
|
|
|
|
tctl = rd32(E1000_TCTL);
|
|
tctl &= ~E1000_TCTL_CT;
|
|
tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
|
|
(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
|
|
|
|
igb_config_collision_dist(hw);
|
|
|
|
/* Setup Transmit Descriptor Settings for eop descriptor */
|
|
adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS;
|
|
|
|
/* Enable transmits */
|
|
tctl |= E1000_TCTL_EN;
|
|
|
|
wr32(E1000_TCTL, tctl);
|
|
}
|
|
|
|
/**
|
|
* igb_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
* @rx_ring: rx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
|
|
int igb_setup_rx_resources(struct igb_adapter *adapter,
|
|
struct igb_ring *rx_ring)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
int size, desc_len;
|
|
|
|
size = sizeof(struct igb_buffer) * rx_ring->count;
|
|
rx_ring->buffer_info = vmalloc(size);
|
|
if (!rx_ring->buffer_info)
|
|
goto err;
|
|
memset(rx_ring->buffer_info, 0, size);
|
|
|
|
desc_len = sizeof(union e1000_adv_rx_desc);
|
|
|
|
/* Round up to nearest 4K */
|
|
rx_ring->size = rx_ring->count * desc_len;
|
|
rx_ring->size = ALIGN(rx_ring->size, 4096);
|
|
|
|
rx_ring->desc = pci_alloc_consistent(pdev, rx_ring->size,
|
|
&rx_ring->dma);
|
|
|
|
if (!rx_ring->desc)
|
|
goto err;
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
rx_ring->pending_skb = NULL;
|
|
|
|
rx_ring->adapter = adapter;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
vfree(rx_ring->buffer_info);
|
|
dev_err(&adapter->pdev->dev, "Unable to allocate memory for "
|
|
"the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/**
|
|
* igb_setup_all_rx_resources - wrapper to allocate Rx resources
|
|
* (Descriptors) for all queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
static int igb_setup_all_rx_resources(struct igb_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
err = igb_setup_rx_resources(adapter, &adapter->rx_ring[i]);
|
|
if (err) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"Allocation for Rx Queue %u failed\n", i);
|
|
for (i--; i >= 0; i--)
|
|
igb_free_rx_resources(&adapter->rx_ring[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* igb_setup_rctl - configure the receive control registers
|
|
* @adapter: Board private structure
|
|
**/
|
|
static void igb_setup_rctl(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 rctl;
|
|
u32 srrctl = 0;
|
|
int i;
|
|
|
|
rctl = rd32(E1000_RCTL);
|
|
|
|
rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
|
|
|
|
rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
|
|
E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
|
|
(adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
|
|
|
|
/*
|
|
* enable stripping of CRC. It's unlikely this will break BMC
|
|
* redirection as it did with e1000. Newer features require
|
|
* that the HW strips the CRC.
|
|
*/
|
|
rctl |= E1000_RCTL_SECRC;
|
|
|
|
rctl &= ~E1000_RCTL_SBP;
|
|
|
|
if (adapter->netdev->mtu <= ETH_DATA_LEN)
|
|
rctl &= ~E1000_RCTL_LPE;
|
|
else
|
|
rctl |= E1000_RCTL_LPE;
|
|
if (adapter->rx_buffer_len <= IGB_RXBUFFER_2048) {
|
|
/* Setup buffer sizes */
|
|
rctl &= ~E1000_RCTL_SZ_4096;
|
|
rctl |= E1000_RCTL_BSEX;
|
|
switch (adapter->rx_buffer_len) {
|
|
case IGB_RXBUFFER_256:
|
|
rctl |= E1000_RCTL_SZ_256;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case IGB_RXBUFFER_512:
|
|
rctl |= E1000_RCTL_SZ_512;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case IGB_RXBUFFER_1024:
|
|
rctl |= E1000_RCTL_SZ_1024;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case IGB_RXBUFFER_2048:
|
|
default:
|
|
rctl |= E1000_RCTL_SZ_2048;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case IGB_RXBUFFER_4096:
|
|
rctl |= E1000_RCTL_SZ_4096;
|
|
break;
|
|
case IGB_RXBUFFER_8192:
|
|
rctl |= E1000_RCTL_SZ_8192;
|
|
break;
|
|
case IGB_RXBUFFER_16384:
|
|
rctl |= E1000_RCTL_SZ_16384;
|
|
break;
|
|
}
|
|
} else {
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
srrctl = adapter->rx_buffer_len >> E1000_SRRCTL_BSIZEPKT_SHIFT;
|
|
}
|
|
|
|
/* 82575 and greater support packet-split where the protocol
|
|
* header is placed in skb->data and the packet data is
|
|
* placed in pages hanging off of skb_shinfo(skb)->nr_frags.
|
|
* In the case of a non-split, skb->data is linearly filled,
|
|
* followed by the page buffers. Therefore, skb->data is
|
|
* sized to hold the largest protocol header.
|
|
*/
|
|
/* allocations using alloc_page take too long for regular MTU
|
|
* so only enable packet split for jumbo frames */
|
|
if (rctl & E1000_RCTL_LPE) {
|
|
adapter->rx_ps_hdr_size = IGB_RXBUFFER_128;
|
|
srrctl = adapter->rx_ps_hdr_size <<
|
|
E1000_SRRCTL_BSIZEHDRSIZE_SHIFT;
|
|
/* buffer size is ALWAYS one page */
|
|
srrctl |= PAGE_SIZE >> E1000_SRRCTL_BSIZEPKT_SHIFT;
|
|
srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS;
|
|
} else {
|
|
adapter->rx_ps_hdr_size = 0;
|
|
srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;
|
|
}
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
wr32(E1000_SRRCTL(i), srrctl);
|
|
|
|
wr32(E1000_RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* igb_configure_rx - Configure receive Unit after Reset
|
|
* @adapter: board private structure
|
|
*
|
|
* Configure the Rx unit of the MAC after a reset.
|
|
**/
|
|
static void igb_configure_rx(struct igb_adapter *adapter)
|
|
{
|
|
u64 rdba;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 rctl, rxcsum;
|
|
u32 rxdctl;
|
|
int i;
|
|
|
|
/* disable receives while setting up the descriptors */
|
|
rctl = rd32(E1000_RCTL);
|
|
wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
|
|
wrfl();
|
|
mdelay(10);
|
|
|
|
if (adapter->itr_setting > 3)
|
|
wr32(E1000_ITR,
|
|
1000000000 / (adapter->itr * 256));
|
|
|
|
/* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
* the Base and Length of the Rx Descriptor Ring */
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct igb_ring *ring = &(adapter->rx_ring[i]);
|
|
rdba = ring->dma;
|
|
wr32(E1000_RDBAL(i),
|
|
rdba & 0x00000000ffffffffULL);
|
|
wr32(E1000_RDBAH(i), rdba >> 32);
|
|
wr32(E1000_RDLEN(i),
|
|
ring->count * sizeof(union e1000_adv_rx_desc));
|
|
|
|
ring->head = E1000_RDH(i);
|
|
ring->tail = E1000_RDT(i);
|
|
writel(0, hw->hw_addr + ring->tail);
|
|
writel(0, hw->hw_addr + ring->head);
|
|
|
|
rxdctl = rd32(E1000_RXDCTL(i));
|
|
rxdctl |= E1000_RXDCTL_QUEUE_ENABLE;
|
|
rxdctl &= 0xFFF00000;
|
|
rxdctl |= IGB_RX_PTHRESH;
|
|
rxdctl |= IGB_RX_HTHRESH << 8;
|
|
rxdctl |= IGB_RX_WTHRESH << 16;
|
|
wr32(E1000_RXDCTL(i), rxdctl);
|
|
}
|
|
|
|
if (adapter->num_rx_queues > 1) {
|
|
u32 random[10];
|
|
u32 mrqc;
|
|
u32 j, shift;
|
|
union e1000_reta {
|
|
u32 dword;
|
|
u8 bytes[4];
|
|
} reta;
|
|
|
|
get_random_bytes(&random[0], 40);
|
|
|
|
shift = 6;
|
|
for (j = 0; j < (32 * 4); j++) {
|
|
reta.bytes[j & 3] =
|
|
(j % adapter->num_rx_queues) << shift;
|
|
if ((j & 3) == 3)
|
|
writel(reta.dword,
|
|
hw->hw_addr + E1000_RETA(0) + (j & ~3));
|
|
}
|
|
mrqc = E1000_MRQC_ENABLE_RSS_4Q;
|
|
|
|
/* Fill out hash function seeds */
|
|
for (j = 0; j < 10; j++)
|
|
array_wr32(E1000_RSSRK(0), j, random[j]);
|
|
|
|
mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
|
|
E1000_MRQC_RSS_FIELD_IPV4_TCP);
|
|
mrqc |= (E1000_MRQC_RSS_FIELD_IPV6 |
|
|
E1000_MRQC_RSS_FIELD_IPV6_TCP);
|
|
mrqc |= (E1000_MRQC_RSS_FIELD_IPV4_UDP |
|
|
E1000_MRQC_RSS_FIELD_IPV6_UDP);
|
|
mrqc |= (E1000_MRQC_RSS_FIELD_IPV6_UDP_EX |
|
|
E1000_MRQC_RSS_FIELD_IPV6_TCP_EX);
|
|
|
|
|
|
wr32(E1000_MRQC, mrqc);
|
|
|
|
/* Multiqueue and raw packet checksumming are mutually
|
|
* exclusive. Note that this not the same as TCP/IP
|
|
* checksumming, which works fine. */
|
|
rxcsum = rd32(E1000_RXCSUM);
|
|
rxcsum |= E1000_RXCSUM_PCSD;
|
|
wr32(E1000_RXCSUM, rxcsum);
|
|
} else {
|
|
/* Enable Receive Checksum Offload for TCP and UDP */
|
|
rxcsum = rd32(E1000_RXCSUM);
|
|
if (adapter->rx_csum) {
|
|
rxcsum |= E1000_RXCSUM_TUOFL;
|
|
|
|
/* Enable IPv4 payload checksum for UDP fragments
|
|
* Must be used in conjunction with packet-split. */
|
|
if (adapter->rx_ps_hdr_size)
|
|
rxcsum |= E1000_RXCSUM_IPPCSE;
|
|
} else {
|
|
rxcsum &= ~E1000_RXCSUM_TUOFL;
|
|
/* don't need to clear IPPCSE as it defaults to 0 */
|
|
}
|
|
wr32(E1000_RXCSUM, rxcsum);
|
|
}
|
|
|
|
if (adapter->vlgrp)
|
|
wr32(E1000_RLPML,
|
|
adapter->max_frame_size + VLAN_TAG_SIZE);
|
|
else
|
|
wr32(E1000_RLPML, adapter->max_frame_size);
|
|
|
|
/* Enable Receives */
|
|
wr32(E1000_RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* igb_free_tx_resources - Free Tx Resources per Queue
|
|
* @adapter: board private structure
|
|
* @tx_ring: Tx descriptor ring for a specific queue
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
static void igb_free_tx_resources(struct igb_ring *tx_ring)
|
|
{
|
|
struct pci_dev *pdev = tx_ring->adapter->pdev;
|
|
|
|
igb_clean_tx_ring(tx_ring);
|
|
|
|
vfree(tx_ring->buffer_info);
|
|
tx_ring->buffer_info = NULL;
|
|
|
|
pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
|
|
|
|
tx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* igb_free_all_tx_resources - Free Tx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
static void igb_free_all_tx_resources(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
igb_free_tx_resources(&adapter->tx_ring[i]);
|
|
}
|
|
|
|
static void igb_unmap_and_free_tx_resource(struct igb_adapter *adapter,
|
|
struct igb_buffer *buffer_info)
|
|
{
|
|
if (buffer_info->dma) {
|
|
pci_unmap_page(adapter->pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->dma = 0;
|
|
}
|
|
if (buffer_info->skb) {
|
|
dev_kfree_skb_any(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
buffer_info->time_stamp = 0;
|
|
/* buffer_info must be completely set up in the transmit path */
|
|
}
|
|
|
|
/**
|
|
* igb_clean_tx_ring - Free Tx Buffers
|
|
* @adapter: board private structure
|
|
* @tx_ring: ring to be cleaned
|
|
**/
|
|
static void igb_clean_tx_ring(struct igb_ring *tx_ring)
|
|
{
|
|
struct igb_adapter *adapter = tx_ring->adapter;
|
|
struct igb_buffer *buffer_info;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
if (!tx_ring->buffer_info)
|
|
return;
|
|
/* Free all the Tx ring sk_buffs */
|
|
|
|
for (i = 0; i < tx_ring->count; i++) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
igb_unmap_and_free_tx_resource(adapter, buffer_info);
|
|
}
|
|
|
|
size = sizeof(struct igb_buffer) * tx_ring->count;
|
|
memset(tx_ring->buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
|
|
memset(tx_ring->desc, 0, tx_ring->size);
|
|
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + tx_ring->head);
|
|
writel(0, adapter->hw.hw_addr + tx_ring->tail);
|
|
}
|
|
|
|
/**
|
|
* igb_clean_all_tx_rings - Free Tx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
static void igb_clean_all_tx_rings(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
igb_clean_tx_ring(&adapter->tx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* igb_free_rx_resources - Free Rx Resources
|
|
* @adapter: board private structure
|
|
* @rx_ring: ring to clean the resources from
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
static void igb_free_rx_resources(struct igb_ring *rx_ring)
|
|
{
|
|
struct pci_dev *pdev = rx_ring->adapter->pdev;
|
|
|
|
igb_clean_rx_ring(rx_ring);
|
|
|
|
vfree(rx_ring->buffer_info);
|
|
rx_ring->buffer_info = NULL;
|
|
|
|
pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
|
|
|
|
rx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* igb_free_all_rx_resources - Free Rx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
static void igb_free_all_rx_resources(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
igb_free_rx_resources(&adapter->rx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* igb_clean_rx_ring - Free Rx Buffers per Queue
|
|
* @adapter: board private structure
|
|
* @rx_ring: ring to free buffers from
|
|
**/
|
|
static void igb_clean_rx_ring(struct igb_ring *rx_ring)
|
|
{
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct igb_buffer *buffer_info;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
if (!rx_ring->buffer_info)
|
|
return;
|
|
/* Free all the Rx ring sk_buffs */
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
if (buffer_info->dma) {
|
|
if (adapter->rx_ps_hdr_size)
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_ps_hdr_size,
|
|
PCI_DMA_FROMDEVICE);
|
|
else
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
buffer_info->dma = 0;
|
|
}
|
|
|
|
if (buffer_info->skb) {
|
|
dev_kfree_skb(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
if (buffer_info->page) {
|
|
pci_unmap_page(pdev, buffer_info->page_dma,
|
|
PAGE_SIZE, PCI_DMA_FROMDEVICE);
|
|
put_page(buffer_info->page);
|
|
buffer_info->page = NULL;
|
|
buffer_info->page_dma = 0;
|
|
}
|
|
}
|
|
|
|
/* there also may be some cached data from a chained receive */
|
|
if (rx_ring->pending_skb) {
|
|
dev_kfree_skb(rx_ring->pending_skb);
|
|
rx_ring->pending_skb = NULL;
|
|
}
|
|
|
|
size = sizeof(struct igb_buffer) * rx_ring->count;
|
|
memset(rx_ring->buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
memset(rx_ring->desc, 0, rx_ring->size);
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + rx_ring->head);
|
|
writel(0, adapter->hw.hw_addr + rx_ring->tail);
|
|
}
|
|
|
|
/**
|
|
* igb_clean_all_rx_rings - Free Rx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
static void igb_clean_all_rx_rings(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
igb_clean_rx_ring(&adapter->rx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* igb_set_mac - Change the Ethernet Address of the NIC
|
|
* @netdev: network interface device structure
|
|
* @p: pointer to an address structure
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int igb_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct sockaddr *addr = p;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len);
|
|
|
|
adapter->hw.mac.ops.rar_set(&adapter->hw, adapter->hw.mac.addr, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igb_set_multi - Multicast and Promiscuous mode set
|
|
* @netdev: network interface device structure
|
|
*
|
|
* The set_multi entry point is called whenever the multicast address
|
|
* list or the network interface flags are updated. This routine is
|
|
* responsible for configuring the hardware for proper multicast,
|
|
* promiscuous mode, and all-multi behavior.
|
|
**/
|
|
static void igb_set_multi(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct e1000_mac_info *mac = &hw->mac;
|
|
struct dev_mc_list *mc_ptr;
|
|
u8 *mta_list;
|
|
u32 rctl;
|
|
int i;
|
|
|
|
/* Check for Promiscuous and All Multicast modes */
|
|
|
|
rctl = rd32(E1000_RCTL);
|
|
|
|
if (netdev->flags & IFF_PROMISC)
|
|
rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
|
|
else if (netdev->flags & IFF_ALLMULTI) {
|
|
rctl |= E1000_RCTL_MPE;
|
|
rctl &= ~E1000_RCTL_UPE;
|
|
} else
|
|
rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
|
|
|
|
wr32(E1000_RCTL, rctl);
|
|
|
|
if (!netdev->mc_count) {
|
|
/* nothing to program, so clear mc list */
|
|
igb_update_mc_addr_list(hw, NULL, 0, 1,
|
|
mac->rar_entry_count);
|
|
return;
|
|
}
|
|
|
|
mta_list = kzalloc(netdev->mc_count * 6, GFP_ATOMIC);
|
|
if (!mta_list)
|
|
return;
|
|
|
|
/* The shared function expects a packed array of only addresses. */
|
|
mc_ptr = netdev->mc_list;
|
|
|
|
for (i = 0; i < netdev->mc_count; i++) {
|
|
if (!mc_ptr)
|
|
break;
|
|
memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, ETH_ALEN);
|
|
mc_ptr = mc_ptr->next;
|
|
}
|
|
igb_update_mc_addr_list(hw, mta_list, i, 1, mac->rar_entry_count);
|
|
kfree(mta_list);
|
|
}
|
|
|
|
/* Need to wait a few seconds after link up to get diagnostic information from
|
|
* the phy */
|
|
static void igb_update_phy_info(unsigned long data)
|
|
{
|
|
struct igb_adapter *adapter = (struct igb_adapter *) data;
|
|
if (adapter->hw.phy.ops.get_phy_info)
|
|
adapter->hw.phy.ops.get_phy_info(&adapter->hw);
|
|
}
|
|
|
|
/**
|
|
* igb_watchdog - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
static void igb_watchdog(unsigned long data)
|
|
{
|
|
struct igb_adapter *adapter = (struct igb_adapter *)data;
|
|
/* Do the rest outside of interrupt context */
|
|
schedule_work(&adapter->watchdog_task);
|
|
}
|
|
|
|
static void igb_watchdog_task(struct work_struct *work)
|
|
{
|
|
struct igb_adapter *adapter = container_of(work,
|
|
struct igb_adapter, watchdog_task);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct igb_ring *tx_ring = adapter->tx_ring;
|
|
struct e1000_mac_info *mac = &adapter->hw.mac;
|
|
u32 link;
|
|
s32 ret_val;
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
int i;
|
|
#endif
|
|
|
|
if ((netif_carrier_ok(netdev)) &&
|
|
(rd32(E1000_STATUS) & E1000_STATUS_LU))
|
|
goto link_up;
|
|
|
|
ret_val = hw->mac.ops.check_for_link(&adapter->hw);
|
|
if ((ret_val == E1000_ERR_PHY) &&
|
|
(hw->phy.type == e1000_phy_igp_3) &&
|
|
(rd32(E1000_CTRL) &
|
|
E1000_PHY_CTRL_GBE_DISABLE))
|
|
dev_info(&adapter->pdev->dev,
|
|
"Gigabit has been disabled, downgrading speed\n");
|
|
|
|
if ((hw->phy.media_type == e1000_media_type_internal_serdes) &&
|
|
!(rd32(E1000_TXCW) & E1000_TXCW_ANE))
|
|
link = mac->serdes_has_link;
|
|
else
|
|
link = rd32(E1000_STATUS) &
|
|
E1000_STATUS_LU;
|
|
|
|
if (link) {
|
|
if (!netif_carrier_ok(netdev)) {
|
|
u32 ctrl;
|
|
hw->mac.ops.get_speed_and_duplex(&adapter->hw,
|
|
&adapter->link_speed,
|
|
&adapter->link_duplex);
|
|
|
|
ctrl = rd32(E1000_CTRL);
|
|
dev_info(&adapter->pdev->dev,
|
|
"NIC Link is Up %d Mbps %s, "
|
|
"Flow Control: %s\n",
|
|
adapter->link_speed,
|
|
adapter->link_duplex == FULL_DUPLEX ?
|
|
"Full Duplex" : "Half Duplex",
|
|
((ctrl & E1000_CTRL_TFCE) && (ctrl &
|
|
E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
|
|
E1000_CTRL_RFCE) ? "RX" : ((ctrl &
|
|
E1000_CTRL_TFCE) ? "TX" : "None")));
|
|
|
|
/* tweak tx_queue_len according to speed/duplex and
|
|
* adjust the timeout factor */
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->tx_timeout_factor = 1;
|
|
switch (adapter->link_speed) {
|
|
case SPEED_10:
|
|
netdev->tx_queue_len = 10;
|
|
adapter->tx_timeout_factor = 14;
|
|
break;
|
|
case SPEED_100:
|
|
netdev->tx_queue_len = 100;
|
|
/* maybe add some timeout factor ? */
|
|
break;
|
|
}
|
|
|
|
netif_carrier_on(netdev);
|
|
netif_wake_queue(netdev);
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
netif_wake_subqueue(netdev, i);
|
|
#endif
|
|
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->phy_info_timer,
|
|
round_jiffies(jiffies + 2 * HZ));
|
|
}
|
|
} else {
|
|
if (netif_carrier_ok(netdev)) {
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
dev_info(&adapter->pdev->dev, "NIC Link is Down\n");
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
netif_stop_subqueue(netdev, i);
|
|
#endif
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->phy_info_timer,
|
|
round_jiffies(jiffies + 2 * HZ));
|
|
}
|
|
}
|
|
|
|
link_up:
|
|
igb_update_stats(adapter);
|
|
|
|
mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
|
|
adapter->tpt_old = adapter->stats.tpt;
|
|
mac->collision_delta = adapter->stats.colc - adapter->colc_old;
|
|
adapter->colc_old = adapter->stats.colc;
|
|
|
|
adapter->gorc = adapter->stats.gorc - adapter->gorc_old;
|
|
adapter->gorc_old = adapter->stats.gorc;
|
|
adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
|
|
adapter->gotc_old = adapter->stats.gotc;
|
|
|
|
igb_update_adaptive(&adapter->hw);
|
|
|
|
if (!netif_carrier_ok(netdev)) {
|
|
if (IGB_DESC_UNUSED(tx_ring) + 1 < tx_ring->count) {
|
|
/* We've lost link, so the controller stops DMA,
|
|
* but we've got queued Tx work that's never going
|
|
* to get done, so reset controller to flush Tx.
|
|
* (Do the reset outside of interrupt context). */
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
}
|
|
|
|
/* Cause software interrupt to ensure rx ring is cleaned */
|
|
wr32(E1000_ICS, E1000_ICS_RXDMT0);
|
|
|
|
/* Force detection of hung controller every watchdog period */
|
|
tx_ring->detect_tx_hung = true;
|
|
|
|
/* Reset the timer */
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer,
|
|
round_jiffies(jiffies + 2 * HZ));
|
|
}
|
|
|
|
enum latency_range {
|
|
lowest_latency = 0,
|
|
low_latency = 1,
|
|
bulk_latency = 2,
|
|
latency_invalid = 255
|
|
};
|
|
|
|
|
|
static void igb_lower_rx_eitr(struct igb_adapter *adapter,
|
|
struct igb_ring *rx_ring)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int new_val;
|
|
|
|
new_val = rx_ring->itr_val / 2;
|
|
if (new_val < IGB_MIN_DYN_ITR)
|
|
new_val = IGB_MIN_DYN_ITR;
|
|
|
|
if (new_val != rx_ring->itr_val) {
|
|
rx_ring->itr_val = new_val;
|
|
wr32(rx_ring->itr_register,
|
|
1000000000 / (new_val * 256));
|
|
}
|
|
}
|
|
|
|
static void igb_raise_rx_eitr(struct igb_adapter *adapter,
|
|
struct igb_ring *rx_ring)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int new_val;
|
|
|
|
new_val = rx_ring->itr_val * 2;
|
|
if (new_val > IGB_MAX_DYN_ITR)
|
|
new_val = IGB_MAX_DYN_ITR;
|
|
|
|
if (new_val != rx_ring->itr_val) {
|
|
rx_ring->itr_val = new_val;
|
|
wr32(rx_ring->itr_register,
|
|
1000000000 / (new_val * 256));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igb_update_itr - update the dynamic ITR value based on statistics
|
|
* Stores a new ITR value based on packets and byte
|
|
* counts during the last interrupt. The advantage of per interrupt
|
|
* computation is faster updates and more accurate ITR for the current
|
|
* traffic pattern. Constants in this function were computed
|
|
* based on theoretical maximum wire speed and thresholds were set based
|
|
* on testing data as well as attempting to minimize response time
|
|
* while increasing bulk throughput.
|
|
* this functionality is controlled by the InterruptThrottleRate module
|
|
* parameter (see igb_param.c)
|
|
* NOTE: These calculations are only valid when operating in a single-
|
|
* queue environment.
|
|
* @adapter: pointer to adapter
|
|
* @itr_setting: current adapter->itr
|
|
* @packets: the number of packets during this measurement interval
|
|
* @bytes: the number of bytes during this measurement interval
|
|
**/
|
|
static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting,
|
|
int packets, int bytes)
|
|
{
|
|
unsigned int retval = itr_setting;
|
|
|
|
if (packets == 0)
|
|
goto update_itr_done;
|
|
|
|
switch (itr_setting) {
|
|
case lowest_latency:
|
|
/* handle TSO and jumbo frames */
|
|
if (bytes/packets > 8000)
|
|
retval = bulk_latency;
|
|
else if ((packets < 5) && (bytes > 512))
|
|
retval = low_latency;
|
|
break;
|
|
case low_latency: /* 50 usec aka 20000 ints/s */
|
|
if (bytes > 10000) {
|
|
/* this if handles the TSO accounting */
|
|
if (bytes/packets > 8000) {
|
|
retval = bulk_latency;
|
|
} else if ((packets < 10) || ((bytes/packets) > 1200)) {
|
|
retval = bulk_latency;
|
|
} else if ((packets > 35)) {
|
|
retval = lowest_latency;
|
|
}
|
|
} else if (bytes/packets > 2000) {
|
|
retval = bulk_latency;
|
|
} else if (packets <= 2 && bytes < 512) {
|
|
retval = lowest_latency;
|
|
}
|
|
break;
|
|
case bulk_latency: /* 250 usec aka 4000 ints/s */
|
|
if (bytes > 25000) {
|
|
if (packets > 35)
|
|
retval = low_latency;
|
|
} else if (bytes < 6000) {
|
|
retval = low_latency;
|
|
}
|
|
break;
|
|
}
|
|
|
|
update_itr_done:
|
|
return retval;
|
|
}
|
|
|
|
static void igb_set_itr(struct igb_adapter *adapter, u16 itr_register,
|
|
int rx_only)
|
|
{
|
|
u16 current_itr;
|
|
u32 new_itr = adapter->itr;
|
|
|
|
/* for non-gigabit speeds, just fix the interrupt rate at 4000 */
|
|
if (adapter->link_speed != SPEED_1000) {
|
|
current_itr = 0;
|
|
new_itr = 4000;
|
|
goto set_itr_now;
|
|
}
|
|
|
|
adapter->rx_itr = igb_update_itr(adapter,
|
|
adapter->rx_itr,
|
|
adapter->rx_ring->total_packets,
|
|
adapter->rx_ring->total_bytes);
|
|
/* conservative mode (itr 3) eliminates the lowest_latency setting */
|
|
if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
|
|
adapter->rx_itr = low_latency;
|
|
|
|
if (!rx_only) {
|
|
adapter->tx_itr = igb_update_itr(adapter,
|
|
adapter->tx_itr,
|
|
adapter->tx_ring->total_packets,
|
|
adapter->tx_ring->total_bytes);
|
|
/* conservative mode (itr 3) eliminates the
|
|
* lowest_latency setting */
|
|
if (adapter->itr_setting == 3 &&
|
|
adapter->tx_itr == lowest_latency)
|
|
adapter->tx_itr = low_latency;
|
|
|
|
current_itr = max(adapter->rx_itr, adapter->tx_itr);
|
|
} else {
|
|
current_itr = adapter->rx_itr;
|
|
}
|
|
|
|
switch (current_itr) {
|
|
/* counts and packets in update_itr are dependent on these numbers */
|
|
case lowest_latency:
|
|
new_itr = 70000;
|
|
break;
|
|
case low_latency:
|
|
new_itr = 20000; /* aka hwitr = ~200 */
|
|
break;
|
|
case bulk_latency:
|
|
new_itr = 4000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
set_itr_now:
|
|
if (new_itr != adapter->itr) {
|
|
/* this attempts to bias the interrupt rate towards Bulk
|
|
* by adding intermediate steps when interrupt rate is
|
|
* increasing */
|
|
new_itr = new_itr > adapter->itr ?
|
|
min(adapter->itr + (new_itr >> 2), new_itr) :
|
|
new_itr;
|
|
/* Don't write the value here; it resets the adapter's
|
|
* internal timer, and causes us to delay far longer than
|
|
* we should between interrupts. Instead, we write the ITR
|
|
* value at the beginning of the next interrupt so the timing
|
|
* ends up being correct.
|
|
*/
|
|
adapter->itr = new_itr;
|
|
adapter->set_itr = 1;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
#define IGB_TX_FLAGS_CSUM 0x00000001
|
|
#define IGB_TX_FLAGS_VLAN 0x00000002
|
|
#define IGB_TX_FLAGS_TSO 0x00000004
|
|
#define IGB_TX_FLAGS_IPV4 0x00000008
|
|
#define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
|
|
#define IGB_TX_FLAGS_VLAN_SHIFT 16
|
|
|
|
static inline int igb_tso_adv(struct igb_adapter *adapter,
|
|
struct igb_ring *tx_ring,
|
|
struct sk_buff *skb, u32 tx_flags, u8 *hdr_len)
|
|
{
|
|
struct e1000_adv_tx_context_desc *context_desc;
|
|
unsigned int i;
|
|
int err;
|
|
struct igb_buffer *buffer_info;
|
|
u32 info = 0, tu_cmd = 0;
|
|
u32 mss_l4len_idx, l4len;
|
|
*hdr_len = 0;
|
|
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
l4len = tcp_hdrlen(skb);
|
|
*hdr_len += l4len;
|
|
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
struct iphdr *iph = ip_hdr(skb);
|
|
iph->tot_len = 0;
|
|
iph->check = 0;
|
|
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
|
|
iph->daddr, 0,
|
|
IPPROTO_TCP,
|
|
0);
|
|
} else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) {
|
|
ipv6_hdr(skb)->payload_len = 0;
|
|
tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
|
|
&ipv6_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
}
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
/* VLAN MACLEN IPLEN */
|
|
if (tx_flags & IGB_TX_FLAGS_VLAN)
|
|
info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
|
|
info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
|
|
*hdr_len += skb_network_offset(skb);
|
|
info |= skb_network_header_len(skb);
|
|
*hdr_len += skb_network_header_len(skb);
|
|
context_desc->vlan_macip_lens = cpu_to_le32(info);
|
|
|
|
/* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
|
|
tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
|
|
|
|
/* MSS L4LEN IDX */
|
|
mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT);
|
|
mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT);
|
|
|
|
/* Context index must be unique per ring. Luckily, so is the interrupt
|
|
* mask value. */
|
|
mss_l4len_idx |= tx_ring->eims_value >> 4;
|
|
|
|
context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx);
|
|
context_desc->seqnum_seed = 0;
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->dma = 0;
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
|
|
static inline bool igb_tx_csum_adv(struct igb_adapter *adapter,
|
|
struct igb_ring *tx_ring,
|
|
struct sk_buff *skb, u32 tx_flags)
|
|
{
|
|
struct e1000_adv_tx_context_desc *context_desc;
|
|
unsigned int i;
|
|
struct igb_buffer *buffer_info;
|
|
u32 info = 0, tu_cmd = 0;
|
|
|
|
if ((skb->ip_summed == CHECKSUM_PARTIAL) ||
|
|
(tx_flags & IGB_TX_FLAGS_VLAN)) {
|
|
i = tx_ring->next_to_use;
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i);
|
|
|
|
if (tx_flags & IGB_TX_FLAGS_VLAN)
|
|
info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK);
|
|
info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT);
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
info |= skb_network_header_len(skb);
|
|
|
|
context_desc->vlan_macip_lens = cpu_to_le32(info);
|
|
|
|
tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT);
|
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) {
|
|
switch (skb->protocol) {
|
|
case __constant_htons(ETH_P_IP):
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_IPV4;
|
|
if (ip_hdr(skb)->protocol == IPPROTO_TCP)
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
break;
|
|
case __constant_htons(ETH_P_IPV6):
|
|
/* XXX what about other V6 headers?? */
|
|
if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
|
|
tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP;
|
|
break;
|
|
default:
|
|
if (unlikely(net_ratelimit()))
|
|
dev_warn(&adapter->pdev->dev,
|
|
"partial checksum but proto=%x!\n",
|
|
skb->protocol);
|
|
break;
|
|
}
|
|
}
|
|
|
|
context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd);
|
|
context_desc->seqnum_seed = 0;
|
|
context_desc->mss_l4len_idx =
|
|
cpu_to_le32(tx_ring->queue_index << 4);
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->dma = 0;
|
|
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
return false;
|
|
}
|
|
|
|
#define IGB_MAX_TXD_PWR 16
|
|
#define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR)
|
|
|
|
static inline int igb_tx_map_adv(struct igb_adapter *adapter,
|
|
struct igb_ring *tx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct igb_buffer *buffer_info;
|
|
unsigned int len = skb_headlen(skb);
|
|
unsigned int count = 0, i;
|
|
unsigned int f;
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
|
|
buffer_info->length = len;
|
|
/* set time_stamp *before* dma to help avoid a possible race */
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->dma = pci_map_single(adapter->pdev, skb->data, len,
|
|
PCI_DMA_TODEVICE);
|
|
count++;
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) {
|
|
struct skb_frag_struct *frag;
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
len = frag->size;
|
|
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
BUG_ON(len >= IGB_MAX_DATA_PER_TXD);
|
|
buffer_info->length = len;
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->dma = pci_map_page(adapter->pdev,
|
|
frag->page,
|
|
frag->page_offset,
|
|
len,
|
|
PCI_DMA_TODEVICE);
|
|
|
|
count++;
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
}
|
|
|
|
i = (i == 0) ? tx_ring->count - 1 : i - 1;
|
|
tx_ring->buffer_info[i].skb = skb;
|
|
|
|
return count;
|
|
}
|
|
|
|
static inline void igb_tx_queue_adv(struct igb_adapter *adapter,
|
|
struct igb_ring *tx_ring,
|
|
int tx_flags, int count, u32 paylen,
|
|
u8 hdr_len)
|
|
{
|
|
union e1000_adv_tx_desc *tx_desc = NULL;
|
|
struct igb_buffer *buffer_info;
|
|
u32 olinfo_status = 0, cmd_type_len;
|
|
unsigned int i;
|
|
|
|
cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS |
|
|
E1000_ADVTXD_DCMD_DEXT);
|
|
|
|
if (tx_flags & IGB_TX_FLAGS_VLAN)
|
|
cmd_type_len |= E1000_ADVTXD_DCMD_VLE;
|
|
|
|
if (tx_flags & IGB_TX_FLAGS_TSO) {
|
|
cmd_type_len |= E1000_ADVTXD_DCMD_TSE;
|
|
|
|
/* insert tcp checksum */
|
|
olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
|
|
|
|
/* insert ip checksum */
|
|
if (tx_flags & IGB_TX_FLAGS_IPV4)
|
|
olinfo_status |= E1000_TXD_POPTS_IXSM << 8;
|
|
|
|
} else if (tx_flags & IGB_TX_FLAGS_CSUM) {
|
|
olinfo_status |= E1000_TXD_POPTS_TXSM << 8;
|
|
}
|
|
|
|
if (tx_flags & (IGB_TX_FLAGS_CSUM | IGB_TX_FLAGS_TSO |
|
|
IGB_TX_FLAGS_VLAN))
|
|
olinfo_status |= tx_ring->queue_index << 4;
|
|
|
|
olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT);
|
|
|
|
i = tx_ring->next_to_use;
|
|
while (count--) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
tx_desc = E1000_TX_DESC_ADV(*tx_ring, i);
|
|
tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
|
|
tx_desc->read.cmd_type_len =
|
|
cpu_to_le32(cmd_type_len | buffer_info->length);
|
|
tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
}
|
|
|
|
tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd);
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
|
|
tx_ring->next_to_use = i;
|
|
writel(i, adapter->hw.hw_addr + tx_ring->tail);
|
|
/* we need this if more than one processor can write to our tail
|
|
* at a time, it syncronizes IO on IA64/Altix systems */
|
|
mmiowb();
|
|
}
|
|
|
|
static int __igb_maybe_stop_tx(struct net_device *netdev,
|
|
struct igb_ring *tx_ring, int size)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
netif_stop_subqueue(netdev, tx_ring->queue_index);
|
|
#else
|
|
netif_stop_queue(netdev);
|
|
#endif
|
|
|
|
/* Herbert's original patch had:
|
|
* smp_mb__after_netif_stop_queue();
|
|
* but since that doesn't exist yet, just open code it. */
|
|
smp_mb();
|
|
|
|
/* We need to check again in a case another CPU has just
|
|
* made room available. */
|
|
if (IGB_DESC_UNUSED(tx_ring) < size)
|
|
return -EBUSY;
|
|
|
|
/* A reprieve! */
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
netif_wake_subqueue(netdev, tx_ring->queue_index);
|
|
#else
|
|
netif_wake_queue(netdev);
|
|
#endif
|
|
++adapter->restart_queue;
|
|
return 0;
|
|
}
|
|
|
|
static int igb_maybe_stop_tx(struct net_device *netdev,
|
|
struct igb_ring *tx_ring, int size)
|
|
{
|
|
if (IGB_DESC_UNUSED(tx_ring) >= size)
|
|
return 0;
|
|
return __igb_maybe_stop_tx(netdev, tx_ring, size);
|
|
}
|
|
|
|
#define TXD_USE_COUNT(S) (((S) >> (IGB_MAX_TXD_PWR)) + 1)
|
|
|
|
static int igb_xmit_frame_ring_adv(struct sk_buff *skb,
|
|
struct net_device *netdev,
|
|
struct igb_ring *tx_ring)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
unsigned int tx_flags = 0;
|
|
unsigned int len;
|
|
u8 hdr_len = 0;
|
|
int tso = 0;
|
|
|
|
len = skb_headlen(skb);
|
|
|
|
if (test_bit(__IGB_DOWN, &adapter->state)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (skb->len <= 0) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* need: 1 descriptor per page,
|
|
* + 2 desc gap to keep tail from touching head,
|
|
* + 1 desc for skb->data,
|
|
* + 1 desc for context descriptor,
|
|
* otherwise try next time */
|
|
if (igb_maybe_stop_tx(netdev, tx_ring, skb_shinfo(skb)->nr_frags + 4)) {
|
|
/* this is a hard error */
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if (adapter->vlgrp && vlan_tx_tag_present(skb)) {
|
|
tx_flags |= IGB_TX_FLAGS_VLAN;
|
|
tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT);
|
|
}
|
|
|
|
if (skb->protocol == htons(ETH_P_IP))
|
|
tx_flags |= IGB_TX_FLAGS_IPV4;
|
|
|
|
tso = skb_is_gso(skb) ? igb_tso_adv(adapter, tx_ring, skb, tx_flags,
|
|
&hdr_len) : 0;
|
|
|
|
if (tso < 0) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (tso)
|
|
tx_flags |= IGB_TX_FLAGS_TSO;
|
|
else if (igb_tx_csum_adv(adapter, tx_ring, skb, tx_flags))
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL)
|
|
tx_flags |= IGB_TX_FLAGS_CSUM;
|
|
|
|
igb_tx_queue_adv(adapter, tx_ring, tx_flags,
|
|
igb_tx_map_adv(adapter, tx_ring, skb),
|
|
skb->len, hdr_len);
|
|
|
|
netdev->trans_start = jiffies;
|
|
|
|
/* Make sure there is space in the ring for the next send. */
|
|
igb_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 4);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
static int igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct igb_ring *tx_ring;
|
|
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
int r_idx = 0;
|
|
r_idx = skb->queue_mapping & (IGB_MAX_TX_QUEUES - 1);
|
|
tx_ring = adapter->multi_tx_table[r_idx];
|
|
#else
|
|
tx_ring = &adapter->tx_ring[0];
|
|
#endif
|
|
|
|
|
|
/* This goes back to the question of how to logically map a tx queue
|
|
* to a flow. Right now, performance is impacted slightly negatively
|
|
* if using multiple tx queues. If the stack breaks away from a
|
|
* single qdisc implementation, we can look at this again. */
|
|
return (igb_xmit_frame_ring_adv(skb, netdev, tx_ring));
|
|
}
|
|
|
|
/**
|
|
* igb_tx_timeout - Respond to a Tx Hang
|
|
* @netdev: network interface device structure
|
|
**/
|
|
static void igb_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
wr32(E1000_EICS, adapter->eims_enable_mask &
|
|
~(E1000_EIMS_TCP_TIMER | E1000_EIMS_OTHER));
|
|
}
|
|
|
|
static void igb_reset_task(struct work_struct *work)
|
|
{
|
|
struct igb_adapter *adapter;
|
|
adapter = container_of(work, struct igb_adapter, reset_task);
|
|
|
|
igb_reinit_locked(adapter);
|
|
}
|
|
|
|
/**
|
|
* igb_get_stats - Get System Network Statistics
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns the address of the device statistics structure.
|
|
* The statistics are actually updated from the timer callback.
|
|
**/
|
|
static struct net_device_stats *
|
|
igb_get_stats(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* only return the current stats */
|
|
return &adapter->net_stats;
|
|
}
|
|
|
|
/**
|
|
* igb_change_mtu - Change the Maximum Transfer Unit
|
|
* @netdev: network interface device structure
|
|
* @new_mtu: new value for maximum frame size
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
static int igb_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN;
|
|
|
|
if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) ||
|
|
(max_frame > MAX_JUMBO_FRAME_SIZE)) {
|
|
dev_err(&adapter->pdev->dev, "Invalid MTU setting\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
#define MAX_STD_JUMBO_FRAME_SIZE 9234
|
|
if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
|
|
dev_err(&adapter->pdev->dev, "MTU > 9216 not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
|
|
msleep(1);
|
|
/* igb_down has a dependency on max_frame_size */
|
|
adapter->max_frame_size = max_frame;
|
|
if (netif_running(netdev))
|
|
igb_down(adapter);
|
|
|
|
/* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
|
|
* means we reserve 2 more, this pushes us to allocate from the next
|
|
* larger slab size.
|
|
* i.e. RXBUFFER_2048 --> size-4096 slab
|
|
*/
|
|
|
|
if (max_frame <= IGB_RXBUFFER_256)
|
|
adapter->rx_buffer_len = IGB_RXBUFFER_256;
|
|
else if (max_frame <= IGB_RXBUFFER_512)
|
|
adapter->rx_buffer_len = IGB_RXBUFFER_512;
|
|
else if (max_frame <= IGB_RXBUFFER_1024)
|
|
adapter->rx_buffer_len = IGB_RXBUFFER_1024;
|
|
else if (max_frame <= IGB_RXBUFFER_2048)
|
|
adapter->rx_buffer_len = IGB_RXBUFFER_2048;
|
|
else
|
|
adapter->rx_buffer_len = IGB_RXBUFFER_4096;
|
|
/* adjust allocation if LPE protects us, and we aren't using SBP */
|
|
if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) ||
|
|
(max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))
|
|
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
|
|
dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n",
|
|
netdev->mtu, new_mtu);
|
|
netdev->mtu = new_mtu;
|
|
|
|
if (netif_running(netdev))
|
|
igb_up(adapter);
|
|
else
|
|
igb_reset(adapter);
|
|
|
|
clear_bit(__IGB_RESETTING, &adapter->state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igb_update_stats - Update the board statistics counters
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
void igb_update_stats(struct igb_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
u16 phy_tmp;
|
|
|
|
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
|
|
|
|
/*
|
|
* Prevent stats update while adapter is being reset, or if the pci
|
|
* connection is down.
|
|
*/
|
|
if (adapter->link_speed == 0)
|
|
return;
|
|
if (pci_channel_offline(pdev))
|
|
return;
|
|
|
|
adapter->stats.crcerrs += rd32(E1000_CRCERRS);
|
|
adapter->stats.gprc += rd32(E1000_GPRC);
|
|
adapter->stats.gorc += rd32(E1000_GORCL);
|
|
rd32(E1000_GORCH); /* clear GORCL */
|
|
adapter->stats.bprc += rd32(E1000_BPRC);
|
|
adapter->stats.mprc += rd32(E1000_MPRC);
|
|
adapter->stats.roc += rd32(E1000_ROC);
|
|
|
|
adapter->stats.prc64 += rd32(E1000_PRC64);
|
|
adapter->stats.prc127 += rd32(E1000_PRC127);
|
|
adapter->stats.prc255 += rd32(E1000_PRC255);
|
|
adapter->stats.prc511 += rd32(E1000_PRC511);
|
|
adapter->stats.prc1023 += rd32(E1000_PRC1023);
|
|
adapter->stats.prc1522 += rd32(E1000_PRC1522);
|
|
adapter->stats.symerrs += rd32(E1000_SYMERRS);
|
|
adapter->stats.sec += rd32(E1000_SEC);
|
|
|
|
adapter->stats.mpc += rd32(E1000_MPC);
|
|
adapter->stats.scc += rd32(E1000_SCC);
|
|
adapter->stats.ecol += rd32(E1000_ECOL);
|
|
adapter->stats.mcc += rd32(E1000_MCC);
|
|
adapter->stats.latecol += rd32(E1000_LATECOL);
|
|
adapter->stats.dc += rd32(E1000_DC);
|
|
adapter->stats.rlec += rd32(E1000_RLEC);
|
|
adapter->stats.xonrxc += rd32(E1000_XONRXC);
|
|
adapter->stats.xontxc += rd32(E1000_XONTXC);
|
|
adapter->stats.xoffrxc += rd32(E1000_XOFFRXC);
|
|
adapter->stats.xofftxc += rd32(E1000_XOFFTXC);
|
|
adapter->stats.fcruc += rd32(E1000_FCRUC);
|
|
adapter->stats.gptc += rd32(E1000_GPTC);
|
|
adapter->stats.gotc += rd32(E1000_GOTCL);
|
|
rd32(E1000_GOTCH); /* clear GOTCL */
|
|
adapter->stats.rnbc += rd32(E1000_RNBC);
|
|
adapter->stats.ruc += rd32(E1000_RUC);
|
|
adapter->stats.rfc += rd32(E1000_RFC);
|
|
adapter->stats.rjc += rd32(E1000_RJC);
|
|
adapter->stats.tor += rd32(E1000_TORH);
|
|
adapter->stats.tot += rd32(E1000_TOTH);
|
|
adapter->stats.tpr += rd32(E1000_TPR);
|
|
|
|
adapter->stats.ptc64 += rd32(E1000_PTC64);
|
|
adapter->stats.ptc127 += rd32(E1000_PTC127);
|
|
adapter->stats.ptc255 += rd32(E1000_PTC255);
|
|
adapter->stats.ptc511 += rd32(E1000_PTC511);
|
|
adapter->stats.ptc1023 += rd32(E1000_PTC1023);
|
|
adapter->stats.ptc1522 += rd32(E1000_PTC1522);
|
|
|
|
adapter->stats.mptc += rd32(E1000_MPTC);
|
|
adapter->stats.bptc += rd32(E1000_BPTC);
|
|
|
|
/* used for adaptive IFS */
|
|
|
|
hw->mac.tx_packet_delta = rd32(E1000_TPT);
|
|
adapter->stats.tpt += hw->mac.tx_packet_delta;
|
|
hw->mac.collision_delta = rd32(E1000_COLC);
|
|
adapter->stats.colc += hw->mac.collision_delta;
|
|
|
|
adapter->stats.algnerrc += rd32(E1000_ALGNERRC);
|
|
adapter->stats.rxerrc += rd32(E1000_RXERRC);
|
|
adapter->stats.tncrs += rd32(E1000_TNCRS);
|
|
adapter->stats.tsctc += rd32(E1000_TSCTC);
|
|
adapter->stats.tsctfc += rd32(E1000_TSCTFC);
|
|
|
|
adapter->stats.iac += rd32(E1000_IAC);
|
|
adapter->stats.icrxoc += rd32(E1000_ICRXOC);
|
|
adapter->stats.icrxptc += rd32(E1000_ICRXPTC);
|
|
adapter->stats.icrxatc += rd32(E1000_ICRXATC);
|
|
adapter->stats.ictxptc += rd32(E1000_ICTXPTC);
|
|
adapter->stats.ictxatc += rd32(E1000_ICTXATC);
|
|
adapter->stats.ictxqec += rd32(E1000_ICTXQEC);
|
|
adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC);
|
|
adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC);
|
|
|
|
/* Fill out the OS statistics structure */
|
|
adapter->net_stats.multicast = adapter->stats.mprc;
|
|
adapter->net_stats.collisions = adapter->stats.colc;
|
|
|
|
/* Rx Errors */
|
|
|
|
/* RLEC on some newer hardware can be incorrect so build
|
|
* our own version based on RUC and ROC */
|
|
adapter->net_stats.rx_errors = adapter->stats.rxerrc +
|
|
adapter->stats.crcerrs + adapter->stats.algnerrc +
|
|
adapter->stats.ruc + adapter->stats.roc +
|
|
adapter->stats.cexterr;
|
|
adapter->net_stats.rx_length_errors = adapter->stats.ruc +
|
|
adapter->stats.roc;
|
|
adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
|
|
adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
|
|
adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
|
|
|
|
/* Tx Errors */
|
|
adapter->net_stats.tx_errors = adapter->stats.ecol +
|
|
adapter->stats.latecol;
|
|
adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
|
|
adapter->net_stats.tx_window_errors = adapter->stats.latecol;
|
|
adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
|
|
|
|
/* Tx Dropped needs to be maintained elsewhere */
|
|
|
|
/* Phy Stats */
|
|
if (hw->phy.media_type == e1000_media_type_copper) {
|
|
if ((adapter->link_speed == SPEED_1000) &&
|
|
(!hw->phy.ops.read_phy_reg(hw, PHY_1000T_STATUS,
|
|
&phy_tmp))) {
|
|
phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
|
|
adapter->phy_stats.idle_errors += phy_tmp;
|
|
}
|
|
}
|
|
|
|
/* Management Stats */
|
|
adapter->stats.mgptc += rd32(E1000_MGTPTC);
|
|
adapter->stats.mgprc += rd32(E1000_MGTPRC);
|
|
adapter->stats.mgpdc += rd32(E1000_MGTPDC);
|
|
}
|
|
|
|
|
|
static irqreturn_t igb_msix_other(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 icr = rd32(E1000_ICR);
|
|
|
|
/* reading ICR causes bit 31 of EICR to be cleared */
|
|
if (!(icr & E1000_ICR_LSC))
|
|
goto no_link_interrupt;
|
|
hw->mac.get_link_status = 1;
|
|
/* guard against interrupt when we're going down */
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
|
|
no_link_interrupt:
|
|
wr32(E1000_IMS, E1000_IMS_LSC);
|
|
wr32(E1000_EIMS, adapter->eims_other);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t igb_msix_tx(int irq, void *data)
|
|
{
|
|
struct igb_ring *tx_ring = data;
|
|
struct igb_adapter *adapter = tx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (!tx_ring->itr_val)
|
|
wr32(E1000_EIMC, tx_ring->eims_value);
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled)
|
|
igb_update_tx_dca(tx_ring);
|
|
#endif
|
|
tx_ring->total_bytes = 0;
|
|
tx_ring->total_packets = 0;
|
|
|
|
/* auto mask will automatically reenable the interrupt when we write
|
|
* EICS */
|
|
if (!igb_clean_tx_irq(tx_ring))
|
|
/* Ring was not completely cleaned, so fire another interrupt */
|
|
wr32(E1000_EICS, tx_ring->eims_value);
|
|
else
|
|
wr32(E1000_EIMS, tx_ring->eims_value);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t igb_msix_rx(int irq, void *data)
|
|
{
|
|
struct igb_ring *rx_ring = data;
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
/* Write the ITR value calculated at the end of the
|
|
* previous interrupt.
|
|
*/
|
|
|
|
if (adapter->set_itr) {
|
|
wr32(rx_ring->itr_register,
|
|
1000000000 / (rx_ring->itr_val * 256));
|
|
adapter->set_itr = 0;
|
|
}
|
|
|
|
if (netif_rx_schedule_prep(adapter->netdev, &rx_ring->napi))
|
|
__netif_rx_schedule(adapter->netdev, &rx_ring->napi);
|
|
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled)
|
|
igb_update_rx_dca(rx_ring);
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_DCA
|
|
static void igb_update_rx_dca(struct igb_ring *rx_ring)
|
|
{
|
|
u32 dca_rxctrl;
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int cpu = get_cpu();
|
|
int q = rx_ring - adapter->rx_ring;
|
|
|
|
if (rx_ring->cpu != cpu) {
|
|
dca_rxctrl = rd32(E1000_DCA_RXCTRL(q));
|
|
dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK;
|
|
dca_rxctrl |= dca_get_tag(cpu);
|
|
dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN;
|
|
dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN;
|
|
dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN;
|
|
wr32(E1000_DCA_RXCTRL(q), dca_rxctrl);
|
|
rx_ring->cpu = cpu;
|
|
}
|
|
put_cpu();
|
|
}
|
|
|
|
static void igb_update_tx_dca(struct igb_ring *tx_ring)
|
|
{
|
|
u32 dca_txctrl;
|
|
struct igb_adapter *adapter = tx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int cpu = get_cpu();
|
|
int q = tx_ring - adapter->tx_ring;
|
|
|
|
if (tx_ring->cpu != cpu) {
|
|
dca_txctrl = rd32(E1000_DCA_TXCTRL(q));
|
|
dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK;
|
|
dca_txctrl |= dca_get_tag(cpu);
|
|
dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN;
|
|
wr32(E1000_DCA_TXCTRL(q), dca_txctrl);
|
|
tx_ring->cpu = cpu;
|
|
}
|
|
put_cpu();
|
|
}
|
|
|
|
static void igb_setup_dca(struct igb_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
if (!(adapter->dca_enabled))
|
|
return;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
adapter->tx_ring[i].cpu = -1;
|
|
igb_update_tx_dca(&adapter->tx_ring[i]);
|
|
}
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
adapter->rx_ring[i].cpu = -1;
|
|
igb_update_rx_dca(&adapter->rx_ring[i]);
|
|
}
|
|
}
|
|
|
|
static int __igb_notify_dca(struct device *dev, void *data)
|
|
{
|
|
struct net_device *netdev = dev_get_drvdata(dev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
unsigned long event = *(unsigned long *)data;
|
|
|
|
switch (event) {
|
|
case DCA_PROVIDER_ADD:
|
|
/* if already enabled, don't do it again */
|
|
if (adapter->dca_enabled)
|
|
break;
|
|
adapter->dca_enabled = true;
|
|
/* Always use CB2 mode, difference is masked
|
|
* in the CB driver. */
|
|
wr32(E1000_DCA_CTRL, 2);
|
|
if (dca_add_requester(dev) == 0) {
|
|
dev_info(&adapter->pdev->dev, "DCA enabled\n");
|
|
igb_setup_dca(adapter);
|
|
break;
|
|
}
|
|
/* Fall Through since DCA is disabled. */
|
|
case DCA_PROVIDER_REMOVE:
|
|
if (adapter->dca_enabled) {
|
|
/* without this a class_device is left
|
|
* hanging around in the sysfs model */
|
|
dca_remove_requester(dev);
|
|
dev_info(&adapter->pdev->dev, "DCA disabled\n");
|
|
adapter->dca_enabled = false;
|
|
wr32(E1000_DCA_CTRL, 1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int igb_notify_dca(struct notifier_block *nb, unsigned long event,
|
|
void *p)
|
|
{
|
|
int ret_val;
|
|
|
|
ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event,
|
|
__igb_notify_dca);
|
|
|
|
return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
|
|
}
|
|
#endif /* CONFIG_DCA */
|
|
|
|
/**
|
|
* igb_intr_msi - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
**/
|
|
static irqreturn_t igb_intr_msi(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
/* read ICR disables interrupts using IAM */
|
|
u32 icr = rd32(E1000_ICR);
|
|
|
|
/* Write the ITR value calculated at the end of the
|
|
* previous interrupt.
|
|
*/
|
|
if (adapter->set_itr) {
|
|
wr32(E1000_ITR, 1000000000 / (adapter->itr * 256));
|
|
adapter->set_itr = 0;
|
|
}
|
|
|
|
if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
|
|
hw->mac.get_link_status = 1;
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
}
|
|
|
|
netif_rx_schedule(netdev, &adapter->rx_ring[0].napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* igb_intr - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
**/
|
|
static irqreturn_t igb_intr(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
/* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
|
|
* need for the IMC write */
|
|
u32 icr = rd32(E1000_ICR);
|
|
u32 eicr = 0;
|
|
if (!icr)
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
|
|
/* Write the ITR value calculated at the end of the
|
|
* previous interrupt.
|
|
*/
|
|
if (adapter->set_itr) {
|
|
wr32(E1000_ITR, 1000000000 / (adapter->itr * 256));
|
|
adapter->set_itr = 0;
|
|
}
|
|
|
|
/* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
|
|
* not set, then the adapter didn't send an interrupt */
|
|
if (!(icr & E1000_ICR_INT_ASSERTED))
|
|
return IRQ_NONE;
|
|
|
|
eicr = rd32(E1000_EICR);
|
|
|
|
if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
|
|
hw->mac.get_link_status = 1;
|
|
/* guard against interrupt when we're going down */
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
}
|
|
|
|
netif_rx_schedule(netdev, &adapter->rx_ring[0].napi);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* igb_poll - NAPI Rx polling callback
|
|
* @napi: napi polling structure
|
|
* @budget: count of how many packets we should handle
|
|
**/
|
|
static int igb_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi);
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct net_device *netdev = adapter->netdev;
|
|
int tx_clean_complete, work_done = 0;
|
|
|
|
/* this poll routine only supports one tx and one rx queue */
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled)
|
|
igb_update_tx_dca(&adapter->tx_ring[0]);
|
|
#endif
|
|
tx_clean_complete = igb_clean_tx_irq(&adapter->tx_ring[0]);
|
|
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled)
|
|
igb_update_rx_dca(&adapter->rx_ring[0]);
|
|
#endif
|
|
igb_clean_rx_irq_adv(&adapter->rx_ring[0], &work_done, budget);
|
|
|
|
/* If no Tx and not enough Rx work done, exit the polling mode */
|
|
if ((tx_clean_complete && (work_done < budget)) ||
|
|
!netif_running(netdev)) {
|
|
if (adapter->itr_setting & 3)
|
|
igb_set_itr(adapter, E1000_ITR, false);
|
|
netif_rx_complete(netdev, napi);
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
igb_irq_enable(adapter);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int igb_clean_rx_ring_msix(struct napi_struct *napi, int budget)
|
|
{
|
|
struct igb_ring *rx_ring = container_of(napi, struct igb_ring, napi);
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
int work_done = 0;
|
|
|
|
/* Keep link state information with original netdev */
|
|
if (!netif_carrier_ok(netdev))
|
|
goto quit_polling;
|
|
|
|
#ifdef CONFIG_DCA
|
|
if (adapter->dca_enabled)
|
|
igb_update_rx_dca(rx_ring);
|
|
#endif
|
|
igb_clean_rx_irq_adv(rx_ring, &work_done, budget);
|
|
|
|
|
|
/* If not enough Rx work done, exit the polling mode */
|
|
if ((work_done == 0) || !netif_running(netdev)) {
|
|
quit_polling:
|
|
netif_rx_complete(netdev, napi);
|
|
|
|
wr32(E1000_EIMS, rx_ring->eims_value);
|
|
if ((adapter->itr_setting & 3) && !rx_ring->no_itr_adjust &&
|
|
(rx_ring->total_packets > IGB_DYN_ITR_PACKET_THRESHOLD)) {
|
|
int mean_size = rx_ring->total_bytes /
|
|
rx_ring->total_packets;
|
|
if (mean_size < IGB_DYN_ITR_LENGTH_LOW)
|
|
igb_raise_rx_eitr(adapter, rx_ring);
|
|
else if (mean_size > IGB_DYN_ITR_LENGTH_HIGH)
|
|
igb_lower_rx_eitr(adapter, rx_ring);
|
|
}
|
|
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
wr32(E1000_EIMS, rx_ring->eims_value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline u32 get_head(struct igb_ring *tx_ring)
|
|
{
|
|
void *end = (struct e1000_tx_desc *)tx_ring->desc + tx_ring->count;
|
|
return le32_to_cpu(*(volatile __le32 *)end);
|
|
}
|
|
|
|
/**
|
|
* igb_clean_tx_irq - Reclaim resources after transmit completes
|
|
* @adapter: board private structure
|
|
* returns true if ring is completely cleaned
|
|
**/
|
|
static bool igb_clean_tx_irq(struct igb_ring *tx_ring)
|
|
{
|
|
struct igb_adapter *adapter = tx_ring->adapter;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_tx_desc *tx_desc;
|
|
struct igb_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
unsigned int i;
|
|
u32 head, oldhead;
|
|
unsigned int count = 0;
|
|
bool cleaned = false;
|
|
bool retval = true;
|
|
unsigned int total_bytes = 0, total_packets = 0;
|
|
|
|
rmb();
|
|
head = get_head(tx_ring);
|
|
i = tx_ring->next_to_clean;
|
|
while (1) {
|
|
while (i != head) {
|
|
cleaned = true;
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
skb = buffer_info->skb;
|
|
|
|
if (skb) {
|
|
unsigned int segs, bytecount;
|
|
/* gso_segs is currently only valid for tcp */
|
|
segs = skb_shinfo(skb)->gso_segs ?: 1;
|
|
/* multiply data chunks by size of headers */
|
|
bytecount = ((segs - 1) * skb_headlen(skb)) +
|
|
skb->len;
|
|
total_packets += segs;
|
|
total_bytes += bytecount;
|
|
}
|
|
|
|
igb_unmap_and_free_tx_resource(adapter, buffer_info);
|
|
tx_desc->upper.data = 0;
|
|
|
|
i++;
|
|
if (i == tx_ring->count)
|
|
i = 0;
|
|
|
|
count++;
|
|
if (count == IGB_MAX_TX_CLEAN) {
|
|
retval = false;
|
|
goto done_cleaning;
|
|
}
|
|
}
|
|
oldhead = head;
|
|
rmb();
|
|
head = get_head(tx_ring);
|
|
if (head == oldhead)
|
|
goto done_cleaning;
|
|
} /* while (1) */
|
|
|
|
done_cleaning:
|
|
tx_ring->next_to_clean = i;
|
|
|
|
if (unlikely(cleaned &&
|
|
netif_carrier_ok(netdev) &&
|
|
IGB_DESC_UNUSED(tx_ring) >= IGB_TX_QUEUE_WAKE)) {
|
|
/* Make sure that anybody stopping the queue after this
|
|
* sees the new next_to_clean.
|
|
*/
|
|
smp_mb();
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) &&
|
|
!(test_bit(__IGB_DOWN, &adapter->state))) {
|
|
netif_wake_subqueue(netdev, tx_ring->queue_index);
|
|
++adapter->restart_queue;
|
|
}
|
|
#else
|
|
if (netif_queue_stopped(netdev) &&
|
|
!(test_bit(__IGB_DOWN, &adapter->state))) {
|
|
netif_wake_queue(netdev);
|
|
++adapter->restart_queue;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (tx_ring->detect_tx_hung) {
|
|
/* Detect a transmit hang in hardware, this serializes the
|
|
* check with the clearing of time_stamp and movement of i */
|
|
tx_ring->detect_tx_hung = false;
|
|
if (tx_ring->buffer_info[i].time_stamp &&
|
|
time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
|
|
(adapter->tx_timeout_factor * HZ))
|
|
&& !(rd32(E1000_STATUS) &
|
|
E1000_STATUS_TXOFF)) {
|
|
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
/* detected Tx unit hang */
|
|
dev_err(&adapter->pdev->dev,
|
|
"Detected Tx Unit Hang\n"
|
|
" Tx Queue <%lu>\n"
|
|
" TDH <%x>\n"
|
|
" TDT <%x>\n"
|
|
" next_to_use <%x>\n"
|
|
" next_to_clean <%x>\n"
|
|
" head (WB) <%x>\n"
|
|
"buffer_info[next_to_clean]\n"
|
|
" time_stamp <%lx>\n"
|
|
" jiffies <%lx>\n"
|
|
" desc.status <%x>\n",
|
|
(unsigned long)((tx_ring - adapter->tx_ring) /
|
|
sizeof(struct igb_ring)),
|
|
readl(adapter->hw.hw_addr + tx_ring->head),
|
|
readl(adapter->hw.hw_addr + tx_ring->tail),
|
|
tx_ring->next_to_use,
|
|
tx_ring->next_to_clean,
|
|
head,
|
|
tx_ring->buffer_info[i].time_stamp,
|
|
jiffies,
|
|
tx_desc->upper.fields.status);
|
|
#ifdef CONFIG_NETDEVICES_MULTIQUEUE
|
|
netif_stop_subqueue(netdev, tx_ring->queue_index);
|
|
#else
|
|
netif_stop_queue(netdev);
|
|
#endif
|
|
}
|
|
}
|
|
tx_ring->total_bytes += total_bytes;
|
|
tx_ring->total_packets += total_packets;
|
|
tx_ring->tx_stats.bytes += total_bytes;
|
|
tx_ring->tx_stats.packets += total_packets;
|
|
adapter->net_stats.tx_bytes += total_bytes;
|
|
adapter->net_stats.tx_packets += total_packets;
|
|
return retval;
|
|
}
|
|
|
|
|
|
/**
|
|
* igb_receive_skb - helper function to handle rx indications
|
|
* @adapter: board private structure
|
|
* @status: descriptor status field as written by hardware
|
|
* @vlan: descriptor vlan field as written by hardware (no le/be conversion)
|
|
* @skb: pointer to sk_buff to be indicated to stack
|
|
**/
|
|
static void igb_receive_skb(struct igb_adapter *adapter, u8 status, __le16 vlan,
|
|
struct sk_buff *skb)
|
|
{
|
|
if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
le16_to_cpu(vlan));
|
|
else
|
|
netif_receive_skb(skb);
|
|
}
|
|
|
|
|
|
static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
|
|
u32 status_err, struct sk_buff *skb)
|
|
{
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
/* Ignore Checksum bit is set or checksum is disabled through ethtool */
|
|
if ((status_err & E1000_RXD_STAT_IXSM) || !adapter->rx_csum)
|
|
return;
|
|
/* TCP/UDP checksum error bit is set */
|
|
if (status_err &
|
|
(E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) {
|
|
/* let the stack verify checksum errors */
|
|
adapter->hw_csum_err++;
|
|
return;
|
|
}
|
|
/* It must be a TCP or UDP packet with a valid checksum */
|
|
if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
|
|
adapter->hw_csum_good++;
|
|
}
|
|
|
|
static bool igb_clean_rx_irq_adv(struct igb_ring *rx_ring,
|
|
int *work_done, int budget)
|
|
{
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
union e1000_adv_rx_desc *rx_desc , *next_rxd;
|
|
struct igb_buffer *buffer_info , *next_buffer;
|
|
struct sk_buff *skb;
|
|
unsigned int i, j;
|
|
u32 length, hlen, staterr;
|
|
bool cleaned = false;
|
|
int cleaned_count = 0;
|
|
unsigned int total_bytes = 0, total_packets = 0;
|
|
|
|
i = rx_ring->next_to_clean;
|
|
rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
|
|
while (staterr & E1000_RXD_STAT_DD) {
|
|
if (*work_done >= budget)
|
|
break;
|
|
(*work_done)++;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
/* HW will not DMA in data larger than the given buffer, even
|
|
* if it parses the (NFS, of course) header to be larger. In
|
|
* that case, it fills the header buffer and spills the rest
|
|
* into the page.
|
|
*/
|
|
hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) &
|
|
E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT;
|
|
if (hlen > adapter->rx_ps_hdr_size)
|
|
hlen = adapter->rx_ps_hdr_size;
|
|
|
|
length = le16_to_cpu(rx_desc->wb.upper.length);
|
|
cleaned = true;
|
|
cleaned_count++;
|
|
|
|
if (rx_ring->pending_skb != NULL) {
|
|
skb = rx_ring->pending_skb;
|
|
rx_ring->pending_skb = NULL;
|
|
j = rx_ring->pending_skb_page;
|
|
} else {
|
|
skb = buffer_info->skb;
|
|
prefetch(skb->data - NET_IP_ALIGN);
|
|
buffer_info->skb = NULL;
|
|
if (hlen) {
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_ps_hdr_size +
|
|
NET_IP_ALIGN,
|
|
PCI_DMA_FROMDEVICE);
|
|
skb_put(skb, hlen);
|
|
} else {
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_buffer_len +
|
|
NET_IP_ALIGN,
|
|
PCI_DMA_FROMDEVICE);
|
|
skb_put(skb, length);
|
|
goto send_up;
|
|
}
|
|
j = 0;
|
|
}
|
|
|
|
while (length) {
|
|
pci_unmap_page(pdev, buffer_info->page_dma,
|
|
PAGE_SIZE, PCI_DMA_FROMDEVICE);
|
|
buffer_info->page_dma = 0;
|
|
skb_fill_page_desc(skb, j, buffer_info->page,
|
|
0, length);
|
|
buffer_info->page = NULL;
|
|
|
|
skb->len += length;
|
|
skb->data_len += length;
|
|
skb->truesize += length;
|
|
rx_desc->wb.upper.status_error = 0;
|
|
if (staterr & E1000_RXD_STAT_EOP)
|
|
break;
|
|
|
|
j++;
|
|
cleaned_count++;
|
|
i++;
|
|
if (i == rx_ring->count)
|
|
i = 0;
|
|
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
length = le16_to_cpu(rx_desc->wb.upper.length);
|
|
if (!(staterr & E1000_RXD_STAT_DD)) {
|
|
rx_ring->pending_skb = skb;
|
|
rx_ring->pending_skb_page = j;
|
|
goto out;
|
|
}
|
|
}
|
|
send_up:
|
|
i++;
|
|
if (i == rx_ring->count)
|
|
i = 0;
|
|
next_rxd = E1000_RX_DESC_ADV(*rx_ring, i);
|
|
prefetch(next_rxd);
|
|
next_buffer = &rx_ring->buffer_info[i];
|
|
|
|
if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
rx_ring->no_itr_adjust |= (staterr & E1000_RXD_STAT_DYNINT);
|
|
|
|
total_bytes += skb->len;
|
|
total_packets++;
|
|
|
|
igb_rx_checksum_adv(adapter, staterr, skb);
|
|
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
igb_receive_skb(adapter, staterr, rx_desc->wb.upper.vlan, skb);
|
|
|
|
netdev->last_rx = jiffies;
|
|
|
|
next_desc:
|
|
rx_desc->wb.upper.status_error = 0;
|
|
|
|
/* return some buffers to hardware, one at a time is too slow */
|
|
if (cleaned_count >= IGB_RX_BUFFER_WRITE) {
|
|
igb_alloc_rx_buffers_adv(rx_ring, cleaned_count);
|
|
cleaned_count = 0;
|
|
}
|
|
|
|
/* use prefetched values */
|
|
rx_desc = next_rxd;
|
|
buffer_info = next_buffer;
|
|
|
|
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
|
|
}
|
|
out:
|
|
rx_ring->next_to_clean = i;
|
|
cleaned_count = IGB_DESC_UNUSED(rx_ring);
|
|
|
|
if (cleaned_count)
|
|
igb_alloc_rx_buffers_adv(rx_ring, cleaned_count);
|
|
|
|
rx_ring->total_packets += total_packets;
|
|
rx_ring->total_bytes += total_bytes;
|
|
rx_ring->rx_stats.packets += total_packets;
|
|
rx_ring->rx_stats.bytes += total_bytes;
|
|
adapter->net_stats.rx_bytes += total_bytes;
|
|
adapter->net_stats.rx_packets += total_packets;
|
|
return cleaned;
|
|
}
|
|
|
|
|
|
/**
|
|
* igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split
|
|
* @adapter: address of board private structure
|
|
**/
|
|
static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring,
|
|
int cleaned_count)
|
|
{
|
|
struct igb_adapter *adapter = rx_ring->adapter;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
union e1000_adv_rx_desc *rx_desc;
|
|
struct igb_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
unsigned int i;
|
|
|
|
i = rx_ring->next_to_use;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while (cleaned_count--) {
|
|
rx_desc = E1000_RX_DESC_ADV(*rx_ring, i);
|
|
|
|
if (adapter->rx_ps_hdr_size && !buffer_info->page) {
|
|
buffer_info->page = alloc_page(GFP_ATOMIC);
|
|
if (!buffer_info->page) {
|
|
adapter->alloc_rx_buff_failed++;
|
|
goto no_buffers;
|
|
}
|
|
buffer_info->page_dma =
|
|
pci_map_page(pdev,
|
|
buffer_info->page,
|
|
0, PAGE_SIZE,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
|
|
if (!buffer_info->skb) {
|
|
int bufsz;
|
|
|
|
if (adapter->rx_ps_hdr_size)
|
|
bufsz = adapter->rx_ps_hdr_size;
|
|
else
|
|
bufsz = adapter->rx_buffer_len;
|
|
bufsz += NET_IP_ALIGN;
|
|
skb = netdev_alloc_skb(netdev, bufsz);
|
|
|
|
if (!skb) {
|
|
adapter->alloc_rx_buff_failed++;
|
|
goto no_buffers;
|
|
}
|
|
|
|
/* Make buffer alignment 2 beyond a 16 byte boundary
|
|
* this will result in a 16 byte aligned IP header after
|
|
* the 14 byte MAC header is removed
|
|
*/
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
buffer_info->skb = skb;
|
|
buffer_info->dma = pci_map_single(pdev, skb->data,
|
|
bufsz,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
}
|
|
/* Refresh the desc even if buffer_addrs didn't change because
|
|
* each write-back erases this info. */
|
|
if (adapter->rx_ps_hdr_size) {
|
|
rx_desc->read.pkt_addr =
|
|
cpu_to_le64(buffer_info->page_dma);
|
|
rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma);
|
|
} else {
|
|
rx_desc->read.pkt_addr =
|
|
cpu_to_le64(buffer_info->dma);
|
|
rx_desc->read.hdr_addr = 0;
|
|
}
|
|
|
|
i++;
|
|
if (i == rx_ring->count)
|
|
i = 0;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
}
|
|
|
|
no_buffers:
|
|
if (rx_ring->next_to_use != i) {
|
|
rx_ring->next_to_use = i;
|
|
if (i == 0)
|
|
i = (rx_ring->count - 1);
|
|
else
|
|
i--;
|
|
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
writel(i, adapter->hw.hw_addr + rx_ring->tail);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* igb_mii_ioctl -
|
|
* @netdev:
|
|
* @ifreq:
|
|
* @cmd:
|
|
**/
|
|
static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct mii_ioctl_data *data = if_mii(ifr);
|
|
|
|
if (adapter->hw.phy.media_type != e1000_media_type_copper)
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
data->phy_id = adapter->hw.phy.addr;
|
|
break;
|
|
case SIOCGMIIREG:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (adapter->hw.phy.ops.read_phy_reg(&adapter->hw,
|
|
data->reg_num
|
|
& 0x1F, &data->val_out))
|
|
return -EIO;
|
|
break;
|
|
case SIOCSMIIREG:
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* igb_ioctl -
|
|
* @netdev:
|
|
* @ifreq:
|
|
* @cmd:
|
|
**/
|
|
static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
case SIOCGMIIREG:
|
|
case SIOCSMIIREG:
|
|
return igb_mii_ioctl(netdev, ifr, cmd);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
static void igb_vlan_rx_register(struct net_device *netdev,
|
|
struct vlan_group *grp)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ctrl, rctl;
|
|
|
|
igb_irq_disable(adapter);
|
|
adapter->vlgrp = grp;
|
|
|
|
if (grp) {
|
|
/* enable VLAN tag insert/strip */
|
|
ctrl = rd32(E1000_CTRL);
|
|
ctrl |= E1000_CTRL_VME;
|
|
wr32(E1000_CTRL, ctrl);
|
|
|
|
/* enable VLAN receive filtering */
|
|
rctl = rd32(E1000_RCTL);
|
|
rctl |= E1000_RCTL_VFE;
|
|
rctl &= ~E1000_RCTL_CFIEN;
|
|
wr32(E1000_RCTL, rctl);
|
|
igb_update_mng_vlan(adapter);
|
|
wr32(E1000_RLPML,
|
|
adapter->max_frame_size + VLAN_TAG_SIZE);
|
|
} else {
|
|
/* disable VLAN tag insert/strip */
|
|
ctrl = rd32(E1000_CTRL);
|
|
ctrl &= ~E1000_CTRL_VME;
|
|
wr32(E1000_CTRL, ctrl);
|
|
|
|
/* disable VLAN filtering */
|
|
rctl = rd32(E1000_RCTL);
|
|
rctl &= ~E1000_RCTL_VFE;
|
|
wr32(E1000_RCTL, rctl);
|
|
if (adapter->mng_vlan_id != (u16)IGB_MNG_VLAN_NONE) {
|
|
igb_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
|
|
adapter->mng_vlan_id = IGB_MNG_VLAN_NONE;
|
|
}
|
|
wr32(E1000_RLPML,
|
|
adapter->max_frame_size);
|
|
}
|
|
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
igb_irq_enable(adapter);
|
|
}
|
|
|
|
static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 vfta, index;
|
|
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
|
|
(vid == adapter->mng_vlan_id))
|
|
return;
|
|
/* add VID to filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = array_rd32(E1000_VFTA, index);
|
|
vfta |= (1 << (vid & 0x1F));
|
|
igb_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 vfta, index;
|
|
|
|
igb_irq_disable(adapter);
|
|
vlan_group_set_device(adapter->vlgrp, vid, NULL);
|
|
|
|
if (!test_bit(__IGB_DOWN, &adapter->state))
|
|
igb_irq_enable(adapter);
|
|
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
|
|
(vid == adapter->mng_vlan_id)) {
|
|
/* release control to f/w */
|
|
igb_release_hw_control(adapter);
|
|
return;
|
|
}
|
|
|
|
/* remove VID from filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = array_rd32(E1000_VFTA, index);
|
|
vfta &= ~(1 << (vid & 0x1F));
|
|
igb_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void igb_restore_vlan(struct igb_adapter *adapter)
|
|
{
|
|
igb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
|
|
if (adapter->vlgrp) {
|
|
u16 vid;
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid))
|
|
continue;
|
|
igb_vlan_rx_add_vid(adapter->netdev, vid);
|
|
}
|
|
}
|
|
}
|
|
|
|
int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
|
|
{
|
|
struct e1000_mac_info *mac = &adapter->hw.mac;
|
|
|
|
mac->autoneg = 0;
|
|
|
|
/* Fiber NICs only allow 1000 gbps Full duplex */
|
|
if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
|
|
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
|
|
dev_err(&adapter->pdev->dev,
|
|
"Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (spddplx) {
|
|
case SPEED_10 + DUPLEX_HALF:
|
|
mac->forced_speed_duplex = ADVERTISE_10_HALF;
|
|
break;
|
|
case SPEED_10 + DUPLEX_FULL:
|
|
mac->forced_speed_duplex = ADVERTISE_10_FULL;
|
|
break;
|
|
case SPEED_100 + DUPLEX_HALF:
|
|
mac->forced_speed_duplex = ADVERTISE_100_HALF;
|
|
break;
|
|
case SPEED_100 + DUPLEX_FULL:
|
|
mac->forced_speed_duplex = ADVERTISE_100_FULL;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_FULL:
|
|
mac->autoneg = 1;
|
|
adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_HALF: /* not supported */
|
|
default:
|
|
dev_err(&adapter->pdev->dev,
|
|
"Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int igb_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 ctrl, ctrl_ext, rctl, status;
|
|
u32 wufc = adapter->wol;
|
|
#ifdef CONFIG_PM
|
|
int retval = 0;
|
|
#endif
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
WARN_ON(test_bit(__IGB_RESETTING, &adapter->state));
|
|
igb_down(adapter);
|
|
igb_free_irq(adapter);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
retval = pci_save_state(pdev);
|
|
if (retval)
|
|
return retval;
|
|
#endif
|
|
|
|
status = rd32(E1000_STATUS);
|
|
if (status & E1000_STATUS_LU)
|
|
wufc &= ~E1000_WUFC_LNKC;
|
|
|
|
if (wufc) {
|
|
igb_setup_rctl(adapter);
|
|
igb_set_multi(netdev);
|
|
|
|
/* turn on all-multi mode if wake on multicast is enabled */
|
|
if (wufc & E1000_WUFC_MC) {
|
|
rctl = rd32(E1000_RCTL);
|
|
rctl |= E1000_RCTL_MPE;
|
|
wr32(E1000_RCTL, rctl);
|
|
}
|
|
|
|
ctrl = rd32(E1000_CTRL);
|
|
/* advertise wake from D3Cold */
|
|
#define E1000_CTRL_ADVD3WUC 0x00100000
|
|
/* phy power management enable */
|
|
#define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
|
|
ctrl |= E1000_CTRL_ADVD3WUC;
|
|
wr32(E1000_CTRL, ctrl);
|
|
|
|
if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
|
|
adapter->hw.phy.media_type ==
|
|
e1000_media_type_internal_serdes) {
|
|
/* keep the laser running in D3 */
|
|
ctrl_ext = rd32(E1000_CTRL_EXT);
|
|
ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
|
|
wr32(E1000_CTRL_EXT, ctrl_ext);
|
|
}
|
|
|
|
/* Allow time for pending master requests to run */
|
|
igb_disable_pcie_master(&adapter->hw);
|
|
|
|
wr32(E1000_WUC, E1000_WUC_PME_EN);
|
|
wr32(E1000_WUFC, wufc);
|
|
pci_enable_wake(pdev, PCI_D3hot, 1);
|
|
pci_enable_wake(pdev, PCI_D3cold, 1);
|
|
} else {
|
|
wr32(E1000_WUC, 0);
|
|
wr32(E1000_WUFC, 0);
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
}
|
|
|
|
/* make sure adapter isn't asleep if manageability is enabled */
|
|
if (adapter->en_mng_pt) {
|
|
pci_enable_wake(pdev, PCI_D3hot, 1);
|
|
pci_enable_wake(pdev, PCI_D3cold, 1);
|
|
}
|
|
|
|
/* Release control of h/w to f/w. If f/w is AMT enabled, this
|
|
* would have already happened in close and is redundant. */
|
|
igb_release_hw_control(adapter);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int igb_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
u32 err;
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_restore_state(pdev);
|
|
|
|
if (adapter->need_ioport)
|
|
err = pci_enable_device(pdev);
|
|
else
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev,
|
|
"igb: Cannot enable PCI device from suspend\n");
|
|
return err;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
if (netif_running(netdev)) {
|
|
err = igb_request_irq(adapter);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/* e1000_power_up_phy(adapter); */
|
|
|
|
igb_reset(adapter);
|
|
wr32(E1000_WUS, ~0);
|
|
|
|
igb_init_manageability(adapter);
|
|
|
|
if (netif_running(netdev))
|
|
igb_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
/* let the f/w know that the h/w is now under the control of the
|
|
* driver. */
|
|
igb_get_hw_control(adapter);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void igb_shutdown(struct pci_dev *pdev)
|
|
{
|
|
igb_suspend(pdev, PMSG_SUSPEND);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
* without having to re-enable interrupts. It's not called while
|
|
* the interrupt routine is executing.
|
|
*/
|
|
static void igb_netpoll(struct net_device *netdev)
|
|
{
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
int i;
|
|
int work_done = 0;
|
|
|
|
igb_irq_disable(adapter);
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
igb_clean_tx_irq(&adapter->tx_ring[i]);
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
igb_clean_rx_irq_adv(&adapter->rx_ring[i],
|
|
&work_done,
|
|
adapter->rx_ring[i].napi.weight);
|
|
|
|
igb_irq_enable(adapter);
|
|
}
|
|
#endif /* CONFIG_NET_POLL_CONTROLLER */
|
|
|
|
/**
|
|
* igb_io_error_detected - called when PCI error is detected
|
|
* @pdev: Pointer to PCI device
|
|
* @state: The current pci connection state
|
|
*
|
|
* This function is called after a PCI bus error affecting
|
|
* this device has been detected.
|
|
*/
|
|
static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev,
|
|
pci_channel_state_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev))
|
|
igb_down(adapter);
|
|
pci_disable_device(pdev);
|
|
|
|
/* Request a slot slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* igb_io_slot_reset - called after the pci bus has been reset.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* Restart the card from scratch, as if from a cold-boot. Implementation
|
|
* resembles the first-half of the igb_resume routine.
|
|
*/
|
|
static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
int err;
|
|
|
|
if (adapter->need_ioport)
|
|
err = pci_enable_device(pdev);
|
|
else
|
|
err = pci_enable_device_mem(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev,
|
|
"Cannot re-enable PCI device after reset.\n");
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
pci_set_master(pdev);
|
|
pci_restore_state(pdev);
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
igb_reset(adapter);
|
|
wr32(E1000_WUS, ~0);
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
/**
|
|
* igb_io_resume - called when traffic can start flowing again.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* This callback is called when the error recovery driver tells us that
|
|
* its OK to resume normal operation. Implementation resembles the
|
|
* second-half of the igb_resume routine.
|
|
*/
|
|
static void igb_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct igb_adapter *adapter = netdev_priv(netdev);
|
|
|
|
igb_init_manageability(adapter);
|
|
|
|
if (netif_running(netdev)) {
|
|
if (igb_up(adapter)) {
|
|
dev_err(&pdev->dev, "igb_up failed after reset\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
/* let the f/w know that the h/w is now under the control of the
|
|
* driver. */
|
|
igb_get_hw_control(adapter);
|
|
|
|
}
|
|
|
|
/* igb_main.c */
|