/*******************************************************************************
-
- Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ Intel PRO/10GbE Linux driver
+ Copyright(c) 1999 - 2006 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., 59
- Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The full GNU General Public License is included in this distribution in the
- file called LICENSE.
-
+ 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:
Linux NICS <linux.nics@intel.com>
+ e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/
#include "ixgb.h"
-/* Change Log
- * 1.0.84 10/26/04
- * - reset buffer_info->dma in Tx resource cleanup logic
- * 1.0.83 10/12/04
- * - sparse cleanup - shemminger@osdl.org
- * - fix tx resource cleanup logic
- */
-
char ixgb_driver_name[] = "ixgb";
-char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
+static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
+
#ifndef CONFIG_IXGB_NAPI
#define DRIVERNAPI
#else
#define DRIVERNAPI "-NAPI"
#endif
-char ixgb_driver_version[] = "1.0.87-k2"DRIVERNAPI;
-char ixgb_copyright[] = "Copyright (c) 1999-2004 Intel Corporation.";
+#define DRV_VERSION "1.0.126-k2"DRIVERNAPI
+char ixgb_driver_version[] = DRV_VERSION;
+static char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
/* ixgb_pci_tbl - PCI Device ID Table
*
static struct pci_device_id ixgb_pci_tbl[] = {
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR,
static struct net_device_stats *ixgb_get_stats(struct net_device *netdev);
static int ixgb_change_mtu(struct net_device *netdev, int new_mtu);
static int ixgb_set_mac(struct net_device *netdev, void *p);
-static irqreturn_t ixgb_intr(int irq, void *data, struct pt_regs *regs);
+static irqreturn_t ixgb_intr(int irq, void *data);
static boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
+
#ifdef CONFIG_IXGB_NAPI
static int ixgb_clean(struct net_device *netdev, int *budget);
static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter,
static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter);
void ixgb_set_ethtool_ops(struct net_device *netdev);
static void ixgb_tx_timeout(struct net_device *dev);
-static void ixgb_tx_timeout_task(struct net_device *dev);
+static void ixgb_tx_timeout_task(struct work_struct *work);
static void ixgb_vlan_rx_register(struct net_device *netdev,
struct vlan_group *grp);
static void ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
static void ixgb_restore_vlan(struct ixgb_adapter *adapter);
-static int ixgb_notify_reboot(struct notifier_block *, unsigned long event,
- void *ptr);
-static int ixgb_suspend(struct pci_dev *pdev, uint32_t state);
-
#ifdef CONFIG_NET_POLL_CONTROLLER
/* for netdump / net console */
static void ixgb_netpoll(struct net_device *dev);
#endif
-struct notifier_block ixgb_notifier_reboot = {
- .notifier_call = ixgb_notify_reboot,
- .next = NULL,
- .priority = 0
-};
+static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev,
+ enum pci_channel_state state);
+static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev);
+static void ixgb_io_resume (struct pci_dev *pdev);
/* Exported from other modules */
-
extern void ixgb_check_options(struct ixgb_adapter *adapter);
+static struct pci_error_handlers ixgb_err_handler = {
+ .error_detected = ixgb_io_error_detected,
+ .slot_reset = ixgb_io_slot_reset,
+ .resume = ixgb_io_resume,
+};
+
static struct pci_driver ixgb_driver = {
- .name = ixgb_driver_name,
+ .name = ixgb_driver_name,
.id_table = ixgb_pci_tbl,
- .probe = ixgb_probe,
- .remove = __devexit_p(ixgb_remove),
- /* Power Managment Hooks */
- .suspend = NULL,
- .resume = NULL
+ .probe = ixgb_probe,
+ .remove = __devexit_p(ixgb_remove),
+ .err_handler = &ixgb_err_handler
};
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver");
MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+
+#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+static int debug = DEFAULT_DEBUG_LEVEL_SHIFT;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
/* some defines for controlling descriptor fetches in h/w */
-#define RXDCTL_PTHRESH_DEFAULT 128 /* chip considers prefech below this */
-#define RXDCTL_HTHRESH_DEFAULT 16 /* chip will only prefetch if tail is
- pushed this many descriptors from head */
-#define RXDCTL_WTHRESH_DEFAULT 16 /* chip writes back at this many or RXT0 */
+#define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */
+#define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below
+ * this */
+#define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail
+ * is pushed this many descriptors
+ * from head */
/**
* ixgb_init_module - Driver Registration Routine
static int __init
ixgb_init_module(void)
{
- int ret;
printk(KERN_INFO "%s - version %s\n",
ixgb_driver_string, ixgb_driver_version);
printk(KERN_INFO "%s\n", ixgb_copyright);
- ret = pci_module_init(&ixgb_driver);
- if(ret >= 0) {
- register_reboot_notifier(&ixgb_notifier_reboot);
- }
- return ret;
+ return pci_register_driver(&ixgb_driver);
}
module_init(ixgb_init_module);
static void __exit
ixgb_exit_module(void)
{
- unregister_reboot_notifier(&ixgb_notifier_reboot);
pci_unregister_driver(&ixgb_driver);
}
* @adapter: board private structure
**/
-static inline void
+static void
ixgb_irq_disable(struct ixgb_adapter *adapter)
{
atomic_inc(&adapter->irq_sem);
* @adapter: board private structure
**/
-static inline void
+static void
ixgb_irq_enable(struct ixgb_adapter *adapter)
{
if(atomic_dec_and_test(&adapter->irq_sem)) {
IXGB_WRITE_REG(&adapter->hw, IMS,
- IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW |
- IXGB_INT_RXO | IXGB_INT_LSC);
+ IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW |
+ IXGB_INT_LSC);
IXGB_WRITE_FLUSH(&adapter->hw);
}
}
/* hardware has been reset, we need to reload some things */
+ ixgb_rar_set(hw, netdev->dev_addr, 0);
ixgb_set_multi(netdev);
ixgb_restore_vlan(adapter);
ixgb_configure_rx(adapter);
ixgb_alloc_rx_buffers(adapter);
+ /* disable interrupts and get the hardware into a known state */
+ IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff);
+
#ifdef CONFIG_PCI_MSI
{
boolean_t pcix = (IXGB_READ_REG(&adapter->hw, STATUS) &
if (!pcix)
adapter->have_msi = FALSE;
else if((err = pci_enable_msi(adapter->pdev))) {
- printk (KERN_ERR
+ DPRINTK(PROBE, ERR,
"Unable to allocate MSI interrupt Error: %d\n", err);
adapter->have_msi = FALSE;
/* proceed to try to request regular interrupt */
#endif
if((err = request_irq(adapter->pdev->irq, &ixgb_intr,
- SA_SHIRQ | SA_SAMPLE_RANDOM,
- netdev->name, netdev)))
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+ netdev->name, netdev))) {
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate interrupt Error: %d\n", err);
return err;
-
- /* disable interrupts and get the hardware into a known state */
- IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff);
+ }
if((hw->max_frame_size != max_frame) ||
(hw->max_frame_size !=
}
mod_timer(&adapter->watchdog_timer, jiffies);
+
+#ifdef CONFIG_IXGB_NAPI
+ netif_poll_enable(netdev);
+#endif
ixgb_irq_enable(adapter);
return 0;
#endif
if(kill_watchdog)
del_timer_sync(&adapter->watchdog_timer);
+#ifdef CONFIG_IXGB_NAPI
+ netif_poll_disable(netdev);
+#endif
adapter->link_speed = 0;
adapter->link_duplex = 0;
netif_carrier_off(netdev);
ixgb_adapter_stop(&adapter->hw);
if(!ixgb_init_hw(&adapter->hw))
- IXGB_DBG("ixgb_init_hw failed.\n");
+ DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n");
}
/**
if((err = pci_enable_device(pdev)))
return err;
- if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
+ if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
+ !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
pci_using_dac = 1;
} else {
- if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
- IXGB_ERR("No usable DMA configuration, aborting\n");
- return err;
+ if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
+ (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
+ printk(KERN_ERR
+ "ixgb: No usable DMA configuration, aborting\n");
+ goto err_dma_mask;
}
pci_using_dac = 0;
}
if((err = pci_request_regions(pdev, ixgb_driver_name)))
- return err;
+ goto err_request_regions;
pci_set_master(pdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
- adapter = netdev->priv;
+ adapter = netdev_priv(netdev);
adapter->netdev = netdev;
adapter->pdev = pdev;
adapter->hw.back = adapter;
+ adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT);
mmio_start = pci_resource_start(pdev, BAR_0);
mmio_len = pci_resource_len(pdev, BAR_0);
netdev->change_mtu = &ixgb_change_mtu;
ixgb_set_ethtool_ops(netdev);
netdev->tx_timeout = &ixgb_tx_timeout;
- netdev->watchdog_timeo = HZ;
+ netdev->watchdog_timeo = 5 * HZ;
#ifdef CONFIG_IXGB_NAPI
netdev->poll = &ixgb_clean;
netdev->weight = 64;
netdev->poll_controller = ixgb_netpoll;
#endif
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
netdev->mem_start = mmio_start;
netdev->mem_end = mmio_start + mmio_len;
netdev->base_addr = adapter->hw.io_base;
#ifdef NETIF_F_TSO
netdev->features |= NETIF_F_TSO;
#endif
+#ifdef NETIF_F_LLTX
+ netdev->features |= NETIF_F_LLTX;
+#endif
if(pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;
/* make sure the EEPROM is good */
if(!ixgb_validate_eeprom_checksum(&adapter->hw)) {
- printk(KERN_ERR "The EEPROM Checksum Is Not Valid\n");
+ DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
err = -EIO;
goto err_eeprom;
}
ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr);
+ memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
- if(!is_valid_ether_addr(netdev->dev_addr)) {
+ if(!is_valid_ether_addr(netdev->perm_addr)) {
+ DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
err = -EIO;
goto err_eeprom;
}
adapter->watchdog_timer.function = &ixgb_watchdog;
adapter->watchdog_timer.data = (unsigned long)adapter;
- INIT_WORK(&adapter->tx_timeout_task,
- (void (*)(void *))ixgb_tx_timeout_task, netdev);
+ INIT_WORK(&adapter->tx_timeout_task, ixgb_tx_timeout_task);
+ strcpy(netdev->name, "eth%d");
if((err = register_netdev(netdev)))
goto err_register;
netif_carrier_off(netdev);
netif_stop_queue(netdev);
- printk(KERN_INFO "%s: Intel(R) PRO/10GbE Network Connection\n",
- netdev->name);
+ DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n");
ixgb_check_options(adapter);
/* reset the hardware with the new settings */
free_netdev(netdev);
err_alloc_etherdev:
pci_release_regions(pdev);
+err_request_regions:
+err_dma_mask:
+ pci_disable_device(pdev);
return err;
}
ixgb_remove(struct pci_dev *pdev)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
unregister_netdev(netdev);
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_id = pdev->subsystem_device;
- adapter->rx_buffer_len = IXGB_RXBUFFER_2048;
-
hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
+ adapter->rx_buffer_len = hw->max_frame_size;
if((hw->device_id == IXGB_DEVICE_ID_82597EX)
- ||(hw->device_id == IXGB_DEVICE_ID_82597EX_LR)
- ||(hw->device_id == IXGB_DEVICE_ID_82597EX_SR))
+ || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4)
+ || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR)
+ || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR))
hw->mac_type = ixgb_82597;
else {
/* should never have loaded on this device */
- printk(KERN_ERR "ixgb: unsupported device id\n");
+ DPRINTK(PROBE, ERR, "unsupported device id\n");
}
/* enable flow control to be programmed */
static int
ixgb_open(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
int err;
/* allocate transmit descriptors */
static int
ixgb_close(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
ixgb_down(adapter, TRUE);
size = sizeof(struct ixgb_buffer) * txdr->count;
txdr->buffer_info = vmalloc(size);
if(!txdr->buffer_info) {
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate transmit descriptor ring memory\n");
return -ENOMEM;
}
memset(txdr->buffer_info, 0, size);
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
if(!txdr->desc) {
vfree(txdr->buffer_info);
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate transmit descriptor memory\n");
return -ENOMEM;
}
memset(txdr->desc, 0, txdr->size);
IXGB_WRITE_REG(hw, TDH, 0);
IXGB_WRITE_REG(hw, TDT, 0);
- /* don't set up txdctl, it induces performance problems if
- * configured incorrectly
- txdctl = TXDCTL_PTHRESH_DEFAULT; // prefetch txds below this threshold
- txdctl |= (TXDCTL_HTHRESH_DEFAULT // only prefetch if there are this many ready
- << IXGB_TXDCTL_HTHRESH_SHIFT);
- IXGB_WRITE_REG (hw, TXDCTL, txdctl);
- */
-
+ /* don't set up txdctl, it induces performance problems if configured
+ * incorrectly */
/* Set the Tx Interrupt Delay register */
IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
size = sizeof(struct ixgb_buffer) * rxdr->count;
rxdr->buffer_info = vmalloc(size);
if(!rxdr->buffer_info) {
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate receive descriptor ring\n");
return -ENOMEM;
}
memset(rxdr->buffer_info, 0, size);
if(!rxdr->desc) {
vfree(rxdr->buffer_info);
+ DPRINTK(PROBE, ERR,
+ "Unable to allocate receive descriptors\n");
return -ENOMEM;
}
memset(rxdr->desc, 0, rxdr->size);
rctl |= IXGB_RCTL_SECRC;
- switch (adapter->rx_buffer_len) {
- case IXGB_RXBUFFER_2048:
- default:
+ if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048)
rctl |= IXGB_RCTL_BSIZE_2048;
- break;
- case IXGB_RXBUFFER_4096:
+ else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096)
rctl |= IXGB_RCTL_BSIZE_4096;
- break;
- case IXGB_RXBUFFER_8192:
+ else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192)
rctl |= IXGB_RCTL_BSIZE_8192;
- break;
- case IXGB_RXBUFFER_16384:
+ else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384)
rctl |= IXGB_RCTL_BSIZE_16384;
- break;
- }
IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
}
IXGB_WRITE_REG(hw, RDH, 0);
IXGB_WRITE_REG(hw, RDT, 0);
- /* burst 16 or burst when RXT0*/
- rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT
- | RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT
- | RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT;
+ /* set up pre-fetching of receive buffers so we get some before we
+ * run out (default hardware behavior is to run out before fetching
+ * more). This sets up to fetch if HTHRESH rx descriptors are avail
+ * and the descriptors in hw cache are below PTHRESH. This avoids
+ * the hardware behavior of fetching <=512 descriptors in a single
+ * burst that pre-empts all other activity, usually causing fifo
+ * overflows. */
+ /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */
+ rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT |
+ RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT |
+ RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT;
IXGB_WRITE_REG(hw, RXDCTL, rxdctl);
/* Enable Receive Checksum Offload for TCP and UDP */
adapter->tx_ring.desc = NULL;
}
-static inline void
+static void
ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter,
struct ixgb_buffer *buffer_info)
{
struct pci_dev *pdev = adapter->pdev;
- if(buffer_info->dma) {
- pci_unmap_page(pdev,
- buffer_info->dma,
- buffer_info->length,
- PCI_DMA_TODEVICE);
- buffer_info->dma = 0;
- }
- if(buffer_info->skb) {
+
+ if (buffer_info->dma)
+ pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
+ PCI_DMA_TODEVICE);
+
+ if (buffer_info->skb)
dev_kfree_skb_any(buffer_info->skb);
- buffer_info->skb = NULL;
- }
+
+ buffer_info->skb = NULL;
+ buffer_info->dma = 0;
+ buffer_info->time_stamp = 0;
+ /* these fields must always be initialized in tx
+ * buffer_info->length = 0;
+ * buffer_info->next_to_watch = 0; */
}
/**
static int
ixgb_set_mac(struct net_device *netdev, void *p)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
struct sockaddr *addr = p;
if(!is_valid_ether_addr(addr->sa_data))
static void
ixgb_set_multi(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
struct dev_mc_list *mc_ptr;
uint32_t rctl;
struct ixgb_adapter *adapter = (struct ixgb_adapter *)data;
struct net_device *netdev = adapter->netdev;
struct ixgb_desc_ring *txdr = &adapter->tx_ring;
- unsigned int i;
ixgb_check_for_link(&adapter->hw);
if(adapter->hw.link_up) {
if(!netif_carrier_ok(netdev)) {
- printk(KERN_INFO "ixgb: %s NIC Link is Up %d Mbps %s\n",
- netdev->name, 10000, "Full Duplex");
+ DPRINTK(LINK, INFO,
+ "NIC Link is Up 10000 Mbps Full Duplex\n");
adapter->link_speed = 10000;
adapter->link_duplex = FULL_DUPLEX;
netif_carrier_on(netdev);
if(netif_carrier_ok(netdev)) {
adapter->link_speed = 0;
adapter->link_duplex = 0;
- printk(KERN_INFO
- "ixgb: %s NIC Link is Down\n",
- netdev->name);
+ DPRINTK(LINK, INFO, "NIC Link is Down\n");
netif_carrier_off(netdev);
netif_stop_queue(netdev);
}
}
- /* Early detection of hung controller */
- i = txdr->next_to_clean;
- if(txdr->buffer_info[i].dma &&
- time_after(jiffies, txdr->buffer_info[i].time_stamp + HZ) &&
- !(IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_TXOFF))
- netif_stop_queue(netdev);
+ /* Force detection of hung controller every watchdog period */
+ adapter->detect_tx_hung = TRUE;
/* generate an interrupt to force clean up of any stragglers */
IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW);
#define IXGB_TX_FLAGS_VLAN 0x00000002
#define IXGB_TX_FLAGS_TSO 0x00000004
-static inline boolean_t
+static int
ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
{
#ifdef NETIF_F_TSO
unsigned int i;
uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
uint16_t ipcse, tucse, mss;
+ int err;
+
+ if (likely(skb_is_gso(skb))) {
+ struct ixgb_buffer *buffer_info;
+ if (skb_header_cloned(skb)) {
+ err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
+ if (err)
+ return err;
+ }
- if(likely(skb_shinfo(skb)->tso_size)) {
hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
- mss = skb_shinfo(skb)->tso_size;
+ mss = skb_shinfo(skb)->gso_size;
skb->nh.iph->tot_len = 0;
skb->nh.iph->check = 0;
skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
i = adapter->tx_ring.next_to_use;
context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
+ buffer_info = &adapter->tx_ring.buffer_info[i];
+ WARN_ON(buffer_info->dma != 0);
context_desc->ipcss = ipcss;
context_desc->ipcso = ipcso;
| IXGB_CONTEXT_DESC_CMD_TSE
| IXGB_CONTEXT_DESC_CMD_IP
| IXGB_CONTEXT_DESC_CMD_TCP
- | IXGB_CONTEXT_DESC_CMD_RS
| IXGB_CONTEXT_DESC_CMD_IDE
| (skb->len - (hdr_len)));
+
if(++i == adapter->tx_ring.count) i = 0;
adapter->tx_ring.next_to_use = i;
- return TRUE;
+ return 1;
}
#endif
- return FALSE;
+ return 0;
}
-static inline boolean_t
+static boolean_t
ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb)
{
struct ixgb_context_desc *context_desc;
unsigned int i;
uint8_t css, cso;
- if(likely(skb->ip_summed == CHECKSUM_HW)) {
+ if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ struct ixgb_buffer *buffer_info;
css = skb->h.raw - skb->data;
- cso = (skb->h.raw + skb->csum) - skb->data;
+ cso = css + skb->csum_offset;
i = adapter->tx_ring.next_to_use;
context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
+ buffer_info = &adapter->tx_ring.buffer_info[i];
+ WARN_ON(buffer_info->dma != 0);
context_desc->tucss = css;
context_desc->tucso = cso;
context_desc->mss = 0;
context_desc->cmd_type_len =
cpu_to_le32(IXGB_CONTEXT_DESC_TYPE
- | IXGB_TX_DESC_CMD_RS
- | IXGB_TX_DESC_CMD_IDE);
+ | IXGB_TX_DESC_CMD_IDE);
if(++i == adapter->tx_ring.count) i = 0;
adapter->tx_ring.next_to_use = i;
#define IXGB_MAX_TXD_PWR 14
#define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR)
-static inline int
+static int
ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
unsigned int first)
{
struct ixgb_buffer *buffer_info;
int len = skb->len;
unsigned int offset = 0, size, count = 0, i;
+ unsigned int mss = skb_shinfo(skb)->gso_size;
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
unsigned int f;
+
len -= skb->data_len;
i = tx_ring->next_to_use;
while(len) {
buffer_info = &tx_ring->buffer_info[i];
- size = min(len, IXGB_MAX_JUMBO_FRAME_SIZE);
+ size = min(len, IXGB_MAX_DATA_PER_TXD);
+ /* Workaround for premature desc write-backs
+ * in TSO mode. Append 4-byte sentinel desc */
+ if (unlikely(mss && !nr_frags && size == len && size > 8))
+ size -= 4;
+
buffer_info->length = size;
+ WARN_ON(buffer_info->dma != 0);
buffer_info->dma =
pci_map_single(adapter->pdev,
skb->data + offset,
size,
PCI_DMA_TODEVICE);
buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = 0;
len -= size;
offset += size;
while(len) {
buffer_info = &tx_ring->buffer_info[i];
- size = min(len, IXGB_MAX_JUMBO_FRAME_SIZE);
+ size = min(len, IXGB_MAX_DATA_PER_TXD);
+
+ /* Workaround for premature desc write-backs
+ * in TSO mode. Append 4-byte sentinel desc */
+ if (unlikely(mss && !nr_frags && size == len
+ && size > 8))
+ size -= 4;
+
buffer_info->length = size;
buffer_info->dma =
pci_map_page(adapter->pdev,
size,
PCI_DMA_TODEVICE);
buffer_info->time_stamp = jiffies;
+ buffer_info->next_to_watch = 0;
len -= size;
offset += size;
return count;
}
-static inline void
+static void
ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags)
{
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
IXGB_WRITE_REG(&adapter->hw, TDT, i);
}
+static int __ixgb_maybe_stop_tx(struct net_device *netdev, int size)
+{
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
+ struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
+
+ netif_stop_queue(netdev);
+ /* 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 (likely(IXGB_DESC_UNUSED(tx_ring) < size))
+ return -EBUSY;
+
+ /* A reprieve! */
+ netif_start_queue(netdev);
+ ++adapter->restart_queue;
+ return 0;
+}
+
+static int ixgb_maybe_stop_tx(struct net_device *netdev,
+ struct ixgb_desc_ring *tx_ring, int size)
+{
+ if (likely(IXGB_DESC_UNUSED(tx_ring) >= size))
+ return 0;
+ return __ixgb_maybe_stop_tx(netdev, size);
+}
+
+
/* Tx Descriptors needed, worst case */
#define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \
(((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
-#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \
- MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1
+#define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) /* skb->date */ + \
+ MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1 /* for context */ \
+ + 1 /* one more needed for sentinel TSO workaround */
static int
ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
unsigned int first;
unsigned int tx_flags = 0;
unsigned long flags;
int vlan_id = 0;
+ int tso;
if(skb->len <= 0) {
dev_kfree_skb_any(skb);
return 0;
}
+#ifdef NETIF_F_LLTX
+ local_irq_save(flags);
+ if (!spin_trylock(&adapter->tx_lock)) {
+ /* Collision - tell upper layer to requeue */
+ local_irq_restore(flags);
+ return NETDEV_TX_LOCKED;
+ }
+#else
spin_lock_irqsave(&adapter->tx_lock, flags);
- if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) {
+#endif
+
+ if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring,
+ DESC_NEEDED))) {
netif_stop_queue(netdev);
spin_unlock_irqrestore(&adapter->tx_lock, flags);
- return 1;
+ return NETDEV_TX_BUSY;
}
+
+#ifndef NETIF_F_LLTX
spin_unlock_irqrestore(&adapter->tx_lock, flags);
+#endif
if(adapter->vlgrp && vlan_tx_tag_present(skb)) {
tx_flags |= IXGB_TX_FLAGS_VLAN;
first = adapter->tx_ring.next_to_use;
- if(ixgb_tso(adapter, skb))
+ tso = ixgb_tso(adapter, skb);
+ if (tso < 0) {
+ dev_kfree_skb_any(skb);
+#ifdef NETIF_F_LLTX
+ spin_unlock_irqrestore(&adapter->tx_lock, flags);
+#endif
+ return NETDEV_TX_OK;
+ }
+
+ if (likely(tso))
tx_flags |= IXGB_TX_FLAGS_TSO;
else if(ixgb_tx_csum(adapter, skb))
tx_flags |= IXGB_TX_FLAGS_CSUM;
netdev->trans_start = jiffies;
- return 0;
+#ifdef NETIF_F_LLTX
+ /* Make sure there is space in the ring for the next send. */
+ ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED);
+
+ spin_unlock_irqrestore(&adapter->tx_lock, flags);
+
+#endif
+ return NETDEV_TX_OK;
}
/**
static void
ixgb_tx_timeout(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
/* Do the reset outside of interrupt context */
schedule_work(&adapter->tx_timeout_task);
}
static void
-ixgb_tx_timeout_task(struct net_device *netdev)
+ixgb_tx_timeout_task(struct work_struct *work)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter =
+ container_of(work, struct ixgb_adapter, tx_timeout_task);
+ adapter->tx_timeout_count++;
ixgb_down(adapter, TRUE);
ixgb_up(adapter);
}
static struct net_device_stats *
ixgb_get_stats(struct net_device *netdev)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
return &adapter->net_stats;
}
static int
ixgb_change_mtu(struct net_device *netdev, int new_mtu)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH)
|| (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) {
- IXGB_ERR("Invalid MTU setting\n");
+ DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu);
return -EINVAL;
}
- if((max_frame <= IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH)
- || (max_frame <= IXGB_RXBUFFER_2048)) {
- adapter->rx_buffer_len = IXGB_RXBUFFER_2048;
-
- } else if(max_frame <= IXGB_RXBUFFER_4096) {
- adapter->rx_buffer_len = IXGB_RXBUFFER_4096;
-
- } else if(max_frame <= IXGB_RXBUFFER_8192) {
- adapter->rx_buffer_len = IXGB_RXBUFFER_8192;
-
- } else {
- adapter->rx_buffer_len = IXGB_RXBUFFER_16384;
- }
+ adapter->rx_buffer_len = max_frame;
netdev->mtu = new_mtu;
- if(old_max_frame != max_frame && netif_running(netdev)) {
-
+ if ((old_max_frame != max_frame) && netif_running(netdev)) {
ixgb_down(adapter, TRUE);
ixgb_up(adapter);
}
void
ixgb_update_stats(struct ixgb_adapter *adapter)
{
+ struct net_device *netdev = adapter->netdev;
+ struct pci_dev *pdev = adapter->pdev;
+
+ /* Prevent stats update while adapter is being reset */
+ if (pdev->error_state && pdev->error_state != pci_channel_io_normal)
+ return;
+
+ if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
+ (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) {
+ u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL);
+ u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL);
+ u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH);
+ u64 bcast = ((u64)bcast_h << 32) | bcast_l;
+
+ multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32);
+ /* fix up multicast stats by removing broadcasts */
+ if(multi >= bcast)
+ multi -= bcast;
+
+ adapter->stats.mprcl += (multi & 0xFFFFFFFF);
+ adapter->stats.mprch += (multi >> 32);
+ adapter->stats.bprcl += bcast_l;
+ adapter->stats.bprch += bcast_h;
+ } else {
+ adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
+ adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
+ adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
+ adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
+ }
adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL);
adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH);
adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL);
adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH);
- adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
- adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
- adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
- adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL);
adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH);
adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL);
adapter->stats.icbc +
adapter->stats.ecbc + adapter->stats.mpc;
- adapter->net_stats.rx_dropped = adapter->stats.mpc;
-
/* see above
* adapter->net_stats.rx_length_errors = adapter->stats.rlec;
*/
* ixgb_intr - Interrupt Handler
* @irq: interrupt number
* @data: pointer to a network interface device structure
- * @pt_regs: CPU registers structure
**/
static irqreturn_t
-ixgb_intr(int irq, void *data, struct pt_regs *regs)
+ixgb_intr(int irq, void *data)
{
struct net_device *netdev = data;
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
uint32_t icr = IXGB_READ_REG(hw, ICR);
#ifndef CONFIG_IXGB_NAPI
static int
ixgb_clean(struct net_device *netdev, int *budget)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
int work_to_do = min(*budget, netdev->quota);
int tx_cleaned;
int work_done = 0;
-
- if (!netif_carrier_ok(netdev))
- goto quit_polling;
tx_cleaned = ixgb_clean_tx_irq(adapter);
ixgb_clean_rx_irq(adapter, &work_done, work_to_do);
*budget -= work_done;
netdev->quota -= work_done;
-
- /* if no Tx cleanup and not enough Rx work done, exit the polling mode */
- if((!tx_cleaned && (work_done < work_to_do)) ||
- !netif_running(netdev)) {
-quit_polling: netif_rx_complete(netdev);
+
+ /* if no Tx and not enough Rx work done, exit the polling mode */
+ if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) {
+ netif_rx_complete(netdev);
ixgb_irq_enable(adapter);
return 0;
}
tx_ring->next_to_clean = i;
- spin_lock(&adapter->tx_lock);
- if(cleaned && netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
- (IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE)) {
+ if (unlikely(netif_queue_stopped(netdev))) {
+ spin_lock(&adapter->tx_lock);
+ if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
+ (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED))
+ netif_wake_queue(netdev);
+ spin_unlock(&adapter->tx_lock);
+ }
- netif_wake_queue(netdev);
+ if(adapter->detect_tx_hung) {
+ /* detect a transmit hang in hardware, this serializes the
+ * check with the clearing of time_stamp and movement of i */
+ adapter->detect_tx_hung = FALSE;
+ if (tx_ring->buffer_info[eop].dma &&
+ time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ)
+ && !(IXGB_READ_REG(&adapter->hw, STATUS) &
+ IXGB_STATUS_TXOFF)) {
+ /* detected Tx unit hang */
+ DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
+ " TDH <%x>\n"
+ " TDT <%x>\n"
+ " next_to_use <%x>\n"
+ " next_to_clean <%x>\n"
+ "buffer_info[next_to_clean]\n"
+ " time_stamp <%lx>\n"
+ " next_to_watch <%x>\n"
+ " jiffies <%lx>\n"
+ " next_to_watch.status <%x>\n",
+ IXGB_READ_REG(&adapter->hw, TDH),
+ IXGB_READ_REG(&adapter->hw, TDT),
+ tx_ring->next_to_use,
+ tx_ring->next_to_clean,
+ tx_ring->buffer_info[eop].time_stamp,
+ eop,
+ jiffies,
+ eop_desc->status);
+ netif_stop_queue(netdev);
+ }
}
- spin_unlock(&adapter->tx_lock);
return cleaned;
}
* @sk_buff: socket buffer with received data
**/
-static inline void
+static void
ixgb_rx_checksum(struct ixgb_adapter *adapter,
struct ixgb_rx_desc *rx_desc,
struct sk_buff *skb)
struct pci_dev *pdev = adapter->pdev;
struct ixgb_rx_desc *rx_desc, *next_rxd;
struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer;
- struct sk_buff *skb, *next_skb;
uint32_t length;
unsigned int i, j;
boolean_t cleaned = FALSE;
buffer_info = &rx_ring->buffer_info[i];
while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) {
+ struct sk_buff *skb, *next_skb;
+ u8 status;
#ifdef CONFIG_IXGB_NAPI
if(*work_done >= work_to_do)
(*work_done)++;
#endif
+ status = rx_desc->status;
skb = buffer_info->skb;
+ buffer_info->skb = NULL;
+
prefetch(skb->data);
if(++i == rx_ring->count) i = 0;
next_skb = next_buffer->skb;
prefetch(next_skb);
-
cleaned = TRUE;
pci_unmap_single(pdev,
length = le16_to_cpu(rx_desc->length);
- if(unlikely(!(rx_desc->status & IXGB_RX_DESC_STATUS_EOP))) {
+ if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) {
/* All receives must fit into a single buffer */
"length<%x>\n", length);
dev_kfree_skb_irq(skb);
- rx_desc->status = 0;
- buffer_info->skb = NULL;
-
- rx_desc = next_rxd;
- buffer_info = next_buffer;
- continue;
+ goto rxdesc_done;
}
if (unlikely(rx_desc->errors
IXGB_RX_DESC_ERRORS_RXE))) {
dev_kfree_skb_irq(skb);
- rx_desc->status = 0;
- buffer_info->skb = NULL;
+ goto rxdesc_done;
+ }
- rx_desc = next_rxd;
- buffer_info = next_buffer;
- continue;
+ /* code added for copybreak, this should improve
+ * performance for small packets with large amounts
+ * of reassembly being done in the stack */
+#define IXGB_CB_LENGTH 256
+ if (length < IXGB_CB_LENGTH) {
+ struct sk_buff *new_skb =
+ netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
+ if (new_skb) {
+ skb_reserve(new_skb, NET_IP_ALIGN);
+ memcpy(new_skb->data - NET_IP_ALIGN,
+ skb->data - NET_IP_ALIGN,
+ length + NET_IP_ALIGN);
+ /* save the skb in buffer_info as good */
+ buffer_info->skb = skb;
+ skb = new_skb;
+ }
}
+ /* end copybreak code */
/* Good Receive */
skb_put(skb, length);
skb->protocol = eth_type_trans(skb, netdev);
#ifdef CONFIG_IXGB_NAPI
- if(adapter->vlgrp && (rx_desc->status & IXGB_RX_DESC_STATUS_VP)) {
+ if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
le16_to_cpu(rx_desc->special) &
IXGB_RX_DESC_SPECIAL_VLAN_MASK);
netif_receive_skb(skb);
}
#else /* CONFIG_IXGB_NAPI */
- if(adapter->vlgrp && (rx_desc->status & IXGB_RX_DESC_STATUS_VP)) {
+ if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
vlan_hwaccel_rx(skb, adapter->vlgrp,
le16_to_cpu(rx_desc->special) &
IXGB_RX_DESC_SPECIAL_VLAN_MASK);
#endif /* CONFIG_IXGB_NAPI */
netdev->last_rx = jiffies;
+rxdesc_done:
+ /* clean up descriptor, might be written over by hw */
rx_desc->status = 0;
- buffer_info->skb = NULL;
+ /* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
}
num_group_tail_writes = IXGB_RX_BUFFER_WRITE;
- /* leave one descriptor unused */
- while(--cleancount > 0) {
- rx_desc = IXGB_RX_DESC(*rx_ring, i);
-
- skb = dev_alloc_skb(adapter->rx_buffer_len + NET_IP_ALIGN);
+ /* leave three descriptors unused */
+ while(--cleancount > 2) {
+ /* recycle! its good for you */
+ skb = buffer_info->skb;
+ if (skb) {
+ skb_trim(skb, 0);
+ goto map_skb;
+ }
- if(unlikely(!skb)) {
+ skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len
+ + NET_IP_ALIGN);
+ if (unlikely(!skb)) {
/* Better luck next round */
+ adapter->alloc_rx_buff_failed++;
break;
}
*/
skb_reserve(skb, NET_IP_ALIGN);
- skb->dev = netdev;
-
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
- buffer_info->dma =
- pci_map_single(pdev,
- skb->data,
- adapter->rx_buffer_len,
- PCI_DMA_FROMDEVICE);
+map_skb:
+ buffer_info->dma = pci_map_single(pdev,
+ skb->data,
+ adapter->rx_buffer_len,
+ PCI_DMA_FROMDEVICE);
+ rx_desc = IXGB_RX_DESC(*rx_ring, i);
rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
+ /* guarantee DD bit not set now before h/w gets descriptor
+ * this is the rest of the workaround for h/w double
+ * writeback. */
+ rx_desc->status = 0;
- if((i & ~(num_group_tail_writes- 1)) == 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();
-
- IXGB_WRITE_REG(&adapter->hw, RDT, i);
- }
if(++i == rx_ring->count) i = 0;
buffer_info = &rx_ring->buffer_info[i];
}
- rx_ring->next_to_use = i;
+ if (likely(rx_ring->next_to_use != i)) {
+ rx_ring->next_to_use = i;
+ if (unlikely(i-- == 0))
+ i = (rx_ring->count - 1);
+
+ /* 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();
+ IXGB_WRITE_REG(&adapter->hw, RDT, i);
+ }
}
/**
static void
ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
uint32_t ctrl, rctl;
ixgb_irq_disable(adapter);
static void
ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
uint32_t vfta, index;
/* add VID to filter table */
static void
ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
{
- struct ixgb_adapter *adapter = netdev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
uint32_t vfta, index;
ixgb_irq_disable(adapter);
}
}
-/**
- * ixgb_notify_reboot - handles OS notification of reboot event.
- * @param nb notifier block, unused
- * @param event Event being passed to driver to act upon
- * @param p A pointer to our net device
- **/
-static int
-ixgb_notify_reboot(struct notifier_block *nb, unsigned long event, void *p)
+#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 ixgb_netpoll(struct net_device *dev)
{
- struct pci_dev *pdev = NULL;
-
- switch(event) {
- case SYS_DOWN:
- case SYS_HALT:
- case SYS_POWER_OFF:
- while ((pdev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pdev))) {
- if (pci_dev_driver(pdev) == &ixgb_driver)
- ixgb_suspend(pdev, 3);
- }
- }
- return NOTIFY_DONE;
+ struct ixgb_adapter *adapter = netdev_priv(dev);
+
+ disable_irq(adapter->pdev->irq);
+ ixgb_intr(adapter->pdev->irq, dev);
+ enable_irq(adapter->pdev->irq);
}
+#endif
/**
- * ixgb_suspend - driver suspend function called from notify.
- * @param pdev pci driver structure used for passing to
- * @param state power state to enter
- **/
-static int
-ixgb_suspend(struct pci_dev *pdev, uint32_t state)
+ * ixgb_io_error_detected() - called when PCI error is detected
+ * @pdev pointer to pci device with error
+ * @state pci channel state after error
+ *
+ * This callback is called by the PCI subsystem whenever
+ * a PCI bus error is detected.
+ */
+static pci_ers_result_t ixgb_io_error_detected (struct pci_dev *pdev,
+ enum pci_channel_state state)
{
struct net_device *netdev = pci_get_drvdata(pdev);
- struct ixgb_adapter *adapter = netdev->priv;
-
- netif_device_detach(netdev);
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
if(netif_running(netdev))
ixgb_down(adapter, TRUE);
- pci_save_state(pdev);
+ pci_disable_device(pdev);
- state = (state > 0) ? 3 : 0;
- pci_set_power_state(pdev, state);
- msec_delay(200);
-
- return 0;
+ /* Request a slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
}
-#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.
+/**
+ * ixgb_io_slot_reset - called after the pci bus has been reset.
+ * @pdev pointer to pci device with error
+ *
+ * This callback is called after the PCI buss has been reset.
+ * Basically, this tries to restart the card from scratch.
+ * This is a shortened version of the device probe/discovery code,
+ * it resembles the first-half of the ixgb_probe() routine.
*/
+static pci_ers_result_t ixgb_io_slot_reset (struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
-static void ixgb_netpoll(struct net_device *dev)
+ if(pci_enable_device(pdev)) {
+ DPRINTK(PROBE, ERR, "Cannot re-enable PCI device after reset.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ /* Perform card reset only on one instance of the card */
+ if (0 != PCI_FUNC (pdev->devfn))
+ return PCI_ERS_RESULT_RECOVERED;
+
+ pci_set_master(pdev);
+
+ netif_carrier_off(netdev);
+ netif_stop_queue(netdev);
+ ixgb_reset(adapter);
+
+ /* Make sure the EEPROM is good */
+ if(!ixgb_validate_eeprom_checksum(&adapter->hw)) {
+ DPRINTK(PROBE, ERR, "After reset, the EEPROM checksum is not valid.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+ ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr);
+ memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
+
+ if(!is_valid_ether_addr(netdev->perm_addr)) {
+ DPRINTK(PROBE, ERR, "After reset, invalid MAC address.\n");
+ return PCI_ERS_RESULT_DISCONNECT;
+ }
+
+ return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * ixgb_io_resume - called when its OK to resume normal operations
+ * @pdev pointer to pci device with error
+ *
+ * The error recovery driver tells us that its OK to resume
+ * normal operation. Implementation resembles the second-half
+ * of the ixgb_probe() routine.
+ */
+static void ixgb_io_resume (struct pci_dev *pdev)
{
- struct ixgb_adapter *adapter = dev->priv;
- disable_irq(adapter->pdev->irq);
- ixgb_intr(adapter->pdev->irq, dev, NULL);
- enable_irq(adapter->pdev->irq);
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct ixgb_adapter *adapter = netdev_priv(netdev);
+
+ pci_set_master(pdev);
+
+ if(netif_running(netdev)) {
+ if(ixgb_up(adapter)) {
+ printk ("ixgb: can't bring device back up after reset\n");
+ return;
+ }
+ }
+
+ netif_device_attach(netdev);
+ mod_timer(&adapter->watchdog_timer, jiffies);
}
-#endif
/* ixgb_main.c */
git://git.onelab.eu / linux-2.6.git / blobdiff