/*******************************************************************************
-
- Copyright(c) 1999 - 2005 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
- * 1.0.96 04/19/05
- * - Make needlessly global code static -- bunk@stusta.de
- * - ethtool cleanup -- shemminger@osdl.org
- * - Support for MODULE_VERSION -- linville@tuxdriver.com
- * - add skb_header_cloned check to the tso path -- herbert@apana.org.au
- * 1.0.88 01/05/05
- * - include fix to the condition that determines when to quit NAPI - Robert Olsson
- * - use netif_poll_{disable/enable} to synchronize between NAPI and i/f up/down
- * 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";
static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
#else
#define DRIVERNAPI "-NAPI"
#endif
-#define DRV_VERSION "1.0.104-k4"DRIVERNAPI
-char ixgb_driver_version[] = DRV_VERSION;
-static char ixgb_copyright[] = "Copyright (c) 1999-2005 Intel Corporation.";
+#define DRV_VERSION "1.0.126-k4"DRIVERNAPI
+const char ixgb_driver_version[] = DRV_VERSION;
+static const char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
/* ixgb_pci_tbl - PCI Device ID Table
*
/* Local Function Prototypes */
int ixgb_up(struct ixgb_adapter *adapter);
-void ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog);
+void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog);
void ixgb_reset(struct ixgb_adapter *adapter);
int ixgb_setup_tx_resources(struct ixgb_adapter *adapter);
int ixgb_setup_rx_resources(struct ixgb_adapter *adapter);
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 boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
+static irqreturn_t ixgb_intr(int irq, void *data);
+static bool 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,
- int *work_done, int work_to_do);
+static int ixgb_clean(struct napi_struct *napi, int budget);
+static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter,
+ int *work_done, int work_to_do);
#else
-static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter);
+static bool ixgb_clean_rx_irq(struct ixgb_adapter *adapter);
#endif
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_netpoll(struct net_device *dev);
#endif
-/* Exported from other modules */
+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);
-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,
.id_table = ixgb_pci_tbl,
.probe = ixgb_probe,
.remove = __devexit_p(ixgb_remove),
+ .err_handler = &ixgb_err_handler
};
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
/* some defines for controlling descriptor fetches in h/w */
-#define RXDCTL_WTHRESH_DEFAULT 16 /* 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 */
+#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
printk(KERN_INFO "%s\n", ixgb_copyright);
- return pci_module_init(&ixgb_driver);
+ return pci_register_driver(&ixgb_driver);
}
module_init(ixgb_init_module);
static void
ixgb_irq_disable(struct ixgb_adapter *adapter)
{
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
IXGB_WRITE_FLUSH(&adapter->hw);
synchronize_irq(adapter->pdev->irq);
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_LSC);
- IXGB_WRITE_FLUSH(&adapter->hw);
- }
+ u32 val = IXGB_INT_RXT0 | IXGB_INT_RXDMT0 |
+ IXGB_INT_TXDW | IXGB_INT_LSC;
+ if (adapter->hw.subsystem_vendor_id == SUN_SUBVENDOR_ID)
+ val |= IXGB_INT_GPI0;
+ IXGB_WRITE_REG(&adapter->hw, IMS, val);
+ IXGB_WRITE_FLUSH(&adapter->hw);
}
int
ixgb_up(struct ixgb_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
- int err;
+ int err, irq_flags = IRQF_SHARED;
int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
struct ixgb_hw *hw = &adapter->hw;
/* 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) &
- IXGB_STATUS_PCIX_MODE) ? TRUE : FALSE;
- adapter->have_msi = TRUE;
-
- if (!pcix)
- adapter->have_msi = FALSE;
- else if((err = pci_enable_msi(adapter->pdev))) {
- DPRINTK(PROBE, ERR,
- "Unable to allocate MSI interrupt Error: %d\n", err);
- adapter->have_msi = FALSE;
+ /* only enable MSI if bus is in PCI-X mode */
+ if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_PCIX_MODE) {
+ err = pci_enable_msi(adapter->pdev);
+ if (!err) {
+ adapter->have_msi = 1;
+ irq_flags = 0;
+ }
/* 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))) {
+ err = request_irq(adapter->pdev->irq, &ixgb_intr, irq_flags,
+ netdev->name, netdev);
+ if (err) {
+ if (adapter->have_msi)
+ pci_disable_msi(adapter->pdev);
DPRINTK(PROBE, ERR,
"Unable to allocate interrupt Error: %d\n", err);
return err;
}
}
- mod_timer(&adapter->watchdog_timer, jiffies);
+ clear_bit(__IXGB_DOWN, &adapter->flags);
#ifdef CONFIG_IXGB_NAPI
- netif_poll_enable(netdev);
+ napi_enable(&adapter->napi);
#endif
ixgb_irq_enable(adapter);
+ mod_timer(&adapter->watchdog_timer, jiffies);
+
return 0;
}
void
-ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog)
+ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog)
{
struct net_device *netdev = adapter->netdev;
+ /* prevent the interrupt handler from restarting watchdog */
+ set_bit(__IXGB_DOWN, &adapter->flags);
+
+#ifdef CONFIG_IXGB_NAPI
+ napi_disable(&adapter->napi);
+#endif
+ /* waiting for NAPI to complete can re-enable interrupts */
ixgb_irq_disable(adapter);
free_irq(adapter->pdev->irq, netdev);
-#ifdef CONFIG_PCI_MSI
- if(adapter->have_msi == TRUE)
+
+ if (adapter->have_msi)
pci_disable_msi(adapter->pdev);
-#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);
void
ixgb_reset(struct ixgb_adapter *adapter)
{
+ struct ixgb_hw *hw = &adapter->hw;
- ixgb_adapter_stop(&adapter->hw);
- if(!ixgb_init_hw(&adapter->hw))
+ ixgb_adapter_stop(hw);
+ if (!ixgb_init_hw(hw))
DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n");
+
+ /* restore frame size information */
+ IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT);
+ if (hw->max_frame_size >
+ IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) {
+ u32 ctrl0 = IXGB_READ_REG(hw, CTRL0);
+ if (!(ctrl0 & IXGB_CTRL0_JFE)) {
+ ctrl0 |= IXGB_CTRL0_JFE;
+ IXGB_WRITE_REG(hw, CTRL0, ctrl0);
+ }
+ }
}
/**
goto err_alloc_etherdev;
}
- SET_MODULE_OWNER(netdev);
SET_NETDEV_DEV(netdev, &pdev->dev);
pci_set_drvdata(pdev, netdev);
netdev->tx_timeout = &ixgb_tx_timeout;
netdev->watchdog_timeo = 5 * HZ;
#ifdef CONFIG_IXGB_NAPI
- netdev->poll = &ixgb_clean;
- netdev->weight = 64;
+ netif_napi_add(netdev, &adapter->napi, ixgb_clean, 64);
#endif
netdev->vlan_rx_register = ixgb_vlan_rx_register;
netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid;
netdev->poll_controller = ixgb_netpoll;
#endif
- strcpy(netdev->name, pci_name(pdev));
+ 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;
NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX |
NETIF_F_HW_VLAN_FILTER;
-#ifdef NETIF_F_TSO
netdev->features |= NETIF_F_TSO;
-#endif
#ifdef NETIF_F_LLTX
netdev->features |= NETIF_F_LLTX;
#endif
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)))
/* enable flow control to be programmed */
hw->fc.send_xon = 1;
- atomic_set(&adapter->irq_sem, 1);
spin_lock_init(&adapter->tx_lock);
+ set_bit(__IXGB_DOWN, &adapter->flags);
return 0;
}
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
- ixgb_down(adapter, TRUE);
+ ixgb_down(adapter, true);
ixgb_free_tx_resources(adapter);
ixgb_free_rx_resources(adapter);
/* round up to nearest 4K */
txdr->size = txdr->count * sizeof(struct ixgb_tx_desc);
- IXGB_ROUNDUP(txdr->size, 4096);
+ txdr->size = ALIGN(txdr->size, 4096);
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
if(!txdr->desc) {
/* Round up to nearest 4K */
rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc);
- IXGB_ROUNDUP(rxdr->size, 4096);
+ rxdr->size = ALIGN(rxdr->size, 4096);
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
IXGB_WRITE_REG(hw, RXDCTL, rxdctl);
/* Enable Receive Checksum Offload for TCP and UDP */
- if(adapter->rx_csum == TRUE) {
+ if (adapter->rx_csum) {
rxcsum = IXGB_READ_REG(hw, RXCSUM);
rxcsum |= IXGB_RXCSUM_TUOFL;
IXGB_WRITE_REG(hw, RXCSUM, rxcsum);
rctl |= IXGB_RCTL_MPE;
IXGB_WRITE_REG(hw, RCTL, rctl);
} else {
- uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS];
+ uint8_t mta[IXGB_MAX_NUM_MULTICAST_ADDRESSES *
+ IXGB_ETH_LENGTH_OF_ADDRESS];
IXGB_WRITE_REG(hw, RCTL, rctl);
}
/* Force detection of hung controller every watchdog period */
- adapter->detect_tx_hung = TRUE;
+ adapter->detect_tx_hung = true;
/* generate an interrupt to force clean up of any stragglers */
IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW);
static int
ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
{
-#ifdef NETIF_F_TSO
struct ixgb_context_desc *context_desc;
unsigned int i;
uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
uint16_t ipcse, tucse, mss;
int err;
- if(likely(skb_shinfo(skb)->tso_size)) {
+ if (likely(skb_is_gso(skb))) {
+ struct ixgb_buffer *buffer_info;
+ struct iphdr *iph;
+
if (skb_header_cloned(skb)) {
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
if (err)
return err;
}
- hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
- mss = skb_shinfo(skb)->tso_size;
- skb->nh.iph->tot_len = 0;
- skb->nh.iph->check = 0;
- skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
- skb->nh.iph->daddr,
- 0, IPPROTO_TCP, 0);
- ipcss = skb->nh.raw - skb->data;
- ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
- ipcse = skb->h.raw - skb->data - 1;
- tucss = skb->h.raw - skb->data;
- tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
+ hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ mss = skb_shinfo(skb)->gso_size;
+ 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);
+ ipcss = skb_network_offset(skb);
+ ipcso = (void *)&(iph->check) - (void *)skb->data;
+ ipcse = skb_transport_offset(skb) - 1;
+ tucss = skb_transport_offset(skb);
+ tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
tucse = 0;
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;
return 1;
}
-#endif
return 0;
}
-static boolean_t
+static bool
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)) {
- css = skb->h.raw - skb->data;
- cso = (skb->h.raw + skb->csum) - skb->data;
+ if(likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ struct ixgb_buffer *buffer_info;
+ css = skb_transport_offset(skb);
+ 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;
if(++i == adapter->tx_ring.count) i = 0;
adapter->tx_ring.next_to_use = i;
- return TRUE;
+ return true;
}
- return FALSE;
+ return false;
}
#define IXGB_MAX_TXD_PWR 14
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;
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,
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 && (f == (nr_frags - 1))
+ && size == len && size > 8))
+ size -= 4;
+
buffer_info->length = size;
buffer_info->dma =
pci_map_page(adapter->pdev,
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)
int vlan_id = 0;
int tso;
+ if (test_bit(__IXGB_DOWN, &adapter->flags)) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
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)) {
+ if (!spin_trylock_irqsave(&adapter->tx_lock, flags)) {
/* Collision - tell upper layer to requeue */
local_irq_restore(flags);
return NETDEV_TX_LOCKED;
spin_lock_irqsave(&adapter->tx_lock, flags);
#endif
- if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) {
+ if (unlikely(ixgb_maybe_stop_tx(netdev, &adapter->tx_ring,
+ DESC_NEEDED))) {
netif_stop_queue(netdev);
spin_unlock_irqrestore(&adapter->tx_lock, flags);
return NETDEV_TX_BUSY;
#ifdef NETIF_F_LLTX
/* Make sure there is space in the ring for the next send. */
- if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED))
- netif_stop_queue(netdev);
+ ixgb_maybe_stop_tx(netdev, &adapter->tx_ring, DESC_NEEDED);
spin_unlock_irqrestore(&adapter->tx_lock, flags);
}
static void
-ixgb_tx_timeout_task(struct net_device *netdev)
+ixgb_tx_timeout_task(struct work_struct *work)
{
- struct ixgb_adapter *adapter = netdev_priv(netdev);
+ struct ixgb_adapter *adapter =
+ container_of(work, struct ixgb_adapter, tx_timeout_task);
adapter->tx_timeout_count++;
- ixgb_down(adapter, TRUE);
+ ixgb_down(adapter, true);
ixgb_up(adapter);
}
netdev->mtu = new_mtu;
if ((old_max_frame != max_frame) && netif_running(netdev)) {
- ixgb_down(adapter, TRUE);
+ ixgb_down(adapter, true);
ixgb_up(adapter);
}
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 (pci_channel_offline(pdev))
+ return;
if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) {
* 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(netdev);
if(unlikely(!icr))
return IRQ_NONE; /* Not our interrupt */
- if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) {
- mod_timer(&adapter->watchdog_timer, jiffies);
- }
+ if (unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC)))
+ if (!test_bit(__IXGB_DOWN, &adapter->flags))
+ mod_timer(&adapter->watchdog_timer, jiffies);
#ifdef CONFIG_IXGB_NAPI
- if(netif_rx_schedule_prep(netdev)) {
+ if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
/* Disable interrupts and register for poll. The flush
of the posted write is intentionally left out.
*/
- atomic_inc(&adapter->irq_sem);
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
- __netif_rx_schedule(netdev);
+ __netif_rx_schedule(netdev, &adapter->napi);
}
#else
/* yes, that is actually a & and it is meant to make sure that
**/
static int
-ixgb_clean(struct net_device *netdev, int *budget)
+ixgb_clean(struct napi_struct *napi, int budget)
{
- struct ixgb_adapter *adapter = netdev_priv(netdev);
- int work_to_do = min(*budget, netdev->quota);
- int tx_cleaned;
+ struct ixgb_adapter *adapter = container_of(napi, struct ixgb_adapter, napi);
+ struct net_device *netdev = adapter->netdev;
int work_done = 0;
- tx_cleaned = ixgb_clean_tx_irq(adapter);
- ixgb_clean_rx_irq(adapter, &work_done, work_to_do);
+ ixgb_clean_tx_irq(adapter);
+ ixgb_clean_rx_irq(adapter, &work_done, budget);
- *budget -= work_done;
- netdev->quota -= work_done;
-
- /* 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);
+ /* If budget not fully consumed, exit the polling mode */
+ if (work_done < budget) {
+ netif_rx_complete(netdev, napi);
ixgb_irq_enable(adapter);
- return 0;
}
- return 1;
+ return work_done;
}
#endif
* @adapter: board private structure
**/
-static boolean_t
+static bool
ixgb_clean_tx_irq(struct ixgb_adapter *adapter)
{
struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
struct ixgb_tx_desc *tx_desc, *eop_desc;
struct ixgb_buffer *buffer_info;
unsigned int i, eop;
- boolean_t cleaned = FALSE;
+ bool cleaned = false;
i = tx_ring->next_to_clean;
eop = tx_ring->buffer_info[i].next_to_watch;
while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) {
- for(cleaned = FALSE; !cleaned; ) {
+ for (cleaned = false; !cleaned; ) {
tx_desc = IXGB_TX_DESC(*tx_ring, i);
buffer_info = &tx_ring->buffer_info[i];
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) > IXGB_TX_QUEUE_WAKE))
+ (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED))
netif_wake_queue(netdev);
spin_unlock(&adapter->tx_lock);
}
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;
+ 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) &
* @adapter: board private structure
**/
-static boolean_t
+static bool
#ifdef CONFIG_IXGB_NAPI
ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
#else
struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer;
uint32_t length;
unsigned int i, j;
- boolean_t cleaned = FALSE;
+ bool cleaned = false;
i = rx_ring->next_to_clean;
rx_desc = IXGB_RX_DESC(*rx_ring, i);
next_skb = next_buffer->skb;
prefetch(next_skb);
- cleaned = TRUE;
+ cleaned = true;
pci_unmap_single(pdev,
buffer_info->dma,
#define IXGB_CB_LENGTH 256
if (length < IXGB_CB_LENGTH) {
struct sk_buff *new_skb =
- dev_alloc_skb(length + NET_IP_ALIGN);
+ netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
if (new_skb) {
skb_reserve(new_skb, NET_IP_ALIGN);
- new_skb->dev = netdev;
- memcpy(new_skb->data - NET_IP_ALIGN,
- skb->data - NET_IP_ALIGN,
- length + NET_IP_ALIGN);
+ skb_copy_to_linear_data_offset(new_skb,
+ -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;
struct ixgb_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
- int num_group_tail_writes;
long cleancount;
i = rx_ring->next_to_use;
buffer_info = &rx_ring->buffer_info[i];
cleancount = IXGB_DESC_UNUSED(rx_ring);
- num_group_tail_writes = IXGB_RX_BUFFER_WRITE;
/* leave three descriptors unused */
while(--cleancount > 2) {
/* recycle! its good for you */
- if (!(skb = buffer_info->skb))
- skb = dev_alloc_skb(adapter->rx_buffer_len
- + NET_IP_ALIGN);
- else {
+ skb = buffer_info->skb;
+ if (skb) {
skb_trim(skb, 0);
goto map_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++;
*/
skb_reserve(skb, NET_IP_ALIGN);
- skb->dev = netdev;
-
buffer_info->skb = skb;
buffer_info->length = adapter->rx_buffer_len;
map_skb:
IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
}
- ixgb_irq_enable(adapter);
+ /* don't enable interrupts unless we are UP */
+ if (adapter->netdev->flags & IFF_UP)
+ ixgb_irq_enable(adapter);
}
static void
ixgb_irq_disable(adapter);
- if(adapter->vlgrp)
- adapter->vlgrp->vlan_devices[vid] = NULL;
+ vlan_group_set_device(adapter->vlgrp, vid, NULL);
- ixgb_irq_enable(adapter);
+ /* don't enable interrupts unless we are UP */
+ if (adapter->netdev->flags & IFF_UP)
+ ixgb_irq_enable(adapter);
- /* remove VID from filter table*/
+ /* remove VID from filter table */
index = (vid >> 5) & 0x7F;
vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index);
if(adapter->vlgrp) {
uint16_t vid;
for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
- if(!adapter->vlgrp->vlan_devices[vid])
+ if(!vlan_group_get_device(adapter->vlgrp, vid))
continue;
ixgb_vlan_rx_add_vid(adapter->netdev, vid);
}
static void ixgb_netpoll(struct net_device *dev)
{
- struct ixgb_adapter *adapter = dev->priv;
+ struct ixgb_adapter *adapter = netdev_priv(dev);
disable_irq(adapter->pdev->irq);
- ixgb_intr(adapter->pdev->irq, dev, NULL);
+ ixgb_intr(adapter->pdev->irq, dev);
enable_irq(adapter->pdev->irq);
}
#endif
+/**
+ * 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(netdev);
+
+ if(netif_running(netdev))
+ ixgb_down(adapter, true);
+
+ pci_disable_device(pdev);
+
+ /* Request a slot reset. */
+ return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * 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);
+
+ 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 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);
+}
+
/* ixgb_main.c */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff