1 /*******************************************************************************
4 Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
31 char ixgb_driver_name[] = "ixgb";
32 static char ixgb_driver_string[] = "Intel(R) PRO/10GbE Network Driver";
34 #ifndef CONFIG_IXGB_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "1.0.109-k4"DRIVERNAPI
40 char ixgb_driver_version[] = DRV_VERSION;
41 static char ixgb_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* ixgb_pci_tbl - PCI Device ID Table
45 * Wildcard entries (PCI_ANY_ID) should come last
46 * Last entry must be all 0s
48 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
49 * Class, Class Mask, private data (not used) }
51 static struct pci_device_id ixgb_pci_tbl[] = {
52 {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX,
53 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
54 {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_CX4,
55 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
56 {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR,
57 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
58 {INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_LR,
59 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
61 /* required last entry */
65 MODULE_DEVICE_TABLE(pci, ixgb_pci_tbl);
67 /* Local Function Prototypes */
69 int ixgb_up(struct ixgb_adapter *adapter);
70 void ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog);
71 void ixgb_reset(struct ixgb_adapter *adapter);
72 int ixgb_setup_tx_resources(struct ixgb_adapter *adapter);
73 int ixgb_setup_rx_resources(struct ixgb_adapter *adapter);
74 void ixgb_free_tx_resources(struct ixgb_adapter *adapter);
75 void ixgb_free_rx_resources(struct ixgb_adapter *adapter);
76 void ixgb_update_stats(struct ixgb_adapter *adapter);
78 static int ixgb_init_module(void);
79 static void ixgb_exit_module(void);
80 static int ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
81 static void __devexit ixgb_remove(struct pci_dev *pdev);
82 static int ixgb_sw_init(struct ixgb_adapter *adapter);
83 static int ixgb_open(struct net_device *netdev);
84 static int ixgb_close(struct net_device *netdev);
85 static void ixgb_configure_tx(struct ixgb_adapter *adapter);
86 static void ixgb_configure_rx(struct ixgb_adapter *adapter);
87 static void ixgb_setup_rctl(struct ixgb_adapter *adapter);
88 static void ixgb_clean_tx_ring(struct ixgb_adapter *adapter);
89 static void ixgb_clean_rx_ring(struct ixgb_adapter *adapter);
90 static void ixgb_set_multi(struct net_device *netdev);
91 static void ixgb_watchdog(unsigned long data);
92 static int ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
93 static struct net_device_stats *ixgb_get_stats(struct net_device *netdev);
94 static int ixgb_change_mtu(struct net_device *netdev, int new_mtu);
95 static int ixgb_set_mac(struct net_device *netdev, void *p);
96 static irqreturn_t ixgb_intr(int irq, void *data, struct pt_regs *regs);
97 static boolean_t ixgb_clean_tx_irq(struct ixgb_adapter *adapter);
99 #ifdef CONFIG_IXGB_NAPI
100 static int ixgb_clean(struct net_device *netdev, int *budget);
101 static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter,
102 int *work_done, int work_to_do);
104 static boolean_t ixgb_clean_rx_irq(struct ixgb_adapter *adapter);
106 static void ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter);
107 void ixgb_set_ethtool_ops(struct net_device *netdev);
108 static void ixgb_tx_timeout(struct net_device *dev);
109 static void ixgb_tx_timeout_task(struct net_device *dev);
110 static void ixgb_vlan_rx_register(struct net_device *netdev,
111 struct vlan_group *grp);
112 static void ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
113 static void ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
114 static void ixgb_restore_vlan(struct ixgb_adapter *adapter);
116 #ifdef CONFIG_NET_POLL_CONTROLLER
117 /* for netdump / net console */
118 static void ixgb_netpoll(struct net_device *dev);
121 /* Exported from other modules */
123 extern void ixgb_check_options(struct ixgb_adapter *adapter);
125 static struct pci_driver ixgb_driver = {
126 .name = ixgb_driver_name,
127 .id_table = ixgb_pci_tbl,
129 .remove = __devexit_p(ixgb_remove),
132 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
133 MODULE_DESCRIPTION("Intel(R) PRO/10GbE Network Driver");
134 MODULE_LICENSE("GPL");
135 MODULE_VERSION(DRV_VERSION);
137 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
138 static int debug = DEFAULT_DEBUG_LEVEL_SHIFT;
139 module_param(debug, int, 0);
140 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
142 /* some defines for controlling descriptor fetches in h/w */
143 #define RXDCTL_WTHRESH_DEFAULT 15 /* chip writes back at this many or RXT0 */
144 #define RXDCTL_PTHRESH_DEFAULT 0 /* chip considers prefech below
146 #define RXDCTL_HTHRESH_DEFAULT 0 /* chip will only prefetch if tail
147 * is pushed this many descriptors
151 * ixgb_init_module - Driver Registration Routine
153 * ixgb_init_module is the first routine called when the driver is
154 * loaded. All it does is register with the PCI subsystem.
158 ixgb_init_module(void)
160 printk(KERN_INFO "%s - version %s\n",
161 ixgb_driver_string, ixgb_driver_version);
163 printk(KERN_INFO "%s\n", ixgb_copyright);
165 return pci_register_driver(&ixgb_driver);
168 module_init(ixgb_init_module);
171 * ixgb_exit_module - Driver Exit Cleanup Routine
173 * ixgb_exit_module is called just before the driver is removed
178 ixgb_exit_module(void)
180 pci_unregister_driver(&ixgb_driver);
183 module_exit(ixgb_exit_module);
186 * ixgb_irq_disable - Mask off interrupt generation on the NIC
187 * @adapter: board private structure
191 ixgb_irq_disable(struct ixgb_adapter *adapter)
193 atomic_inc(&adapter->irq_sem);
194 IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
195 IXGB_WRITE_FLUSH(&adapter->hw);
196 synchronize_irq(adapter->pdev->irq);
200 * ixgb_irq_enable - Enable default interrupt generation settings
201 * @adapter: board private structure
205 ixgb_irq_enable(struct ixgb_adapter *adapter)
207 if(atomic_dec_and_test(&adapter->irq_sem)) {
208 IXGB_WRITE_REG(&adapter->hw, IMS,
209 IXGB_INT_RXT0 | IXGB_INT_RXDMT0 | IXGB_INT_TXDW |
211 IXGB_WRITE_FLUSH(&adapter->hw);
216 ixgb_up(struct ixgb_adapter *adapter)
218 struct net_device *netdev = adapter->netdev;
220 int max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
221 struct ixgb_hw *hw = &adapter->hw;
223 /* hardware has been reset, we need to reload some things */
225 ixgb_rar_set(hw, netdev->dev_addr, 0);
226 ixgb_set_multi(netdev);
228 ixgb_restore_vlan(adapter);
230 ixgb_configure_tx(adapter);
231 ixgb_setup_rctl(adapter);
232 ixgb_configure_rx(adapter);
233 ixgb_alloc_rx_buffers(adapter);
235 /* disable interrupts and get the hardware into a known state */
236 IXGB_WRITE_REG(&adapter->hw, IMC, 0xffffffff);
238 #ifdef CONFIG_PCI_MSI
240 boolean_t pcix = (IXGB_READ_REG(&adapter->hw, STATUS) &
241 IXGB_STATUS_PCIX_MODE) ? TRUE : FALSE;
242 adapter->have_msi = TRUE;
245 adapter->have_msi = FALSE;
246 else if((err = pci_enable_msi(adapter->pdev))) {
248 "Unable to allocate MSI interrupt Error: %d\n", err);
249 adapter->have_msi = FALSE;
250 /* proceed to try to request regular interrupt */
255 if((err = request_irq(adapter->pdev->irq, &ixgb_intr,
256 IRQF_SHARED | IRQF_SAMPLE_RANDOM,
257 netdev->name, netdev))) {
259 "Unable to allocate interrupt Error: %d\n", err);
263 if((hw->max_frame_size != max_frame) ||
264 (hw->max_frame_size !=
265 (IXGB_READ_REG(hw, MFS) >> IXGB_MFS_SHIFT))) {
267 hw->max_frame_size = max_frame;
269 IXGB_WRITE_REG(hw, MFS, hw->max_frame_size << IXGB_MFS_SHIFT);
271 if(hw->max_frame_size >
272 IXGB_MAX_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH) {
273 uint32_t ctrl0 = IXGB_READ_REG(hw, CTRL0);
275 if(!(ctrl0 & IXGB_CTRL0_JFE)) {
276 ctrl0 |= IXGB_CTRL0_JFE;
277 IXGB_WRITE_REG(hw, CTRL0, ctrl0);
282 mod_timer(&adapter->watchdog_timer, jiffies);
284 #ifdef CONFIG_IXGB_NAPI
285 netif_poll_enable(netdev);
287 ixgb_irq_enable(adapter);
293 ixgb_down(struct ixgb_adapter *adapter, boolean_t kill_watchdog)
295 struct net_device *netdev = adapter->netdev;
297 ixgb_irq_disable(adapter);
298 free_irq(adapter->pdev->irq, netdev);
299 #ifdef CONFIG_PCI_MSI
300 if(adapter->have_msi == TRUE)
301 pci_disable_msi(adapter->pdev);
305 del_timer_sync(&adapter->watchdog_timer);
306 #ifdef CONFIG_IXGB_NAPI
307 netif_poll_disable(netdev);
309 adapter->link_speed = 0;
310 adapter->link_duplex = 0;
311 netif_carrier_off(netdev);
312 netif_stop_queue(netdev);
315 ixgb_clean_tx_ring(adapter);
316 ixgb_clean_rx_ring(adapter);
320 ixgb_reset(struct ixgb_adapter *adapter)
323 ixgb_adapter_stop(&adapter->hw);
324 if(!ixgb_init_hw(&adapter->hw))
325 DPRINTK(PROBE, ERR, "ixgb_init_hw failed.\n");
329 * ixgb_probe - Device Initialization Routine
330 * @pdev: PCI device information struct
331 * @ent: entry in ixgb_pci_tbl
333 * Returns 0 on success, negative on failure
335 * ixgb_probe initializes an adapter identified by a pci_dev structure.
336 * The OS initialization, configuring of the adapter private structure,
337 * and a hardware reset occur.
341 ixgb_probe(struct pci_dev *pdev,
342 const struct pci_device_id *ent)
344 struct net_device *netdev = NULL;
345 struct ixgb_adapter *adapter;
346 static int cards_found = 0;
347 unsigned long mmio_start;
353 if((err = pci_enable_device(pdev)))
356 if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
357 !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
360 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) ||
361 (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
363 "ixgb: No usable DMA configuration, aborting\n");
369 if((err = pci_request_regions(pdev, ixgb_driver_name)))
370 goto err_request_regions;
372 pci_set_master(pdev);
374 netdev = alloc_etherdev(sizeof(struct ixgb_adapter));
377 goto err_alloc_etherdev;
380 SET_MODULE_OWNER(netdev);
381 SET_NETDEV_DEV(netdev, &pdev->dev);
383 pci_set_drvdata(pdev, netdev);
384 adapter = netdev_priv(netdev);
385 adapter->netdev = netdev;
386 adapter->pdev = pdev;
387 adapter->hw.back = adapter;
388 adapter->msg_enable = netif_msg_init(debug, DEFAULT_DEBUG_LEVEL_SHIFT);
390 mmio_start = pci_resource_start(pdev, BAR_0);
391 mmio_len = pci_resource_len(pdev, BAR_0);
393 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
394 if(!adapter->hw.hw_addr) {
399 for(i = BAR_1; i <= BAR_5; i++) {
400 if(pci_resource_len(pdev, i) == 0)
402 if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
403 adapter->hw.io_base = pci_resource_start(pdev, i);
408 netdev->open = &ixgb_open;
409 netdev->stop = &ixgb_close;
410 netdev->hard_start_xmit = &ixgb_xmit_frame;
411 netdev->get_stats = &ixgb_get_stats;
412 netdev->set_multicast_list = &ixgb_set_multi;
413 netdev->set_mac_address = &ixgb_set_mac;
414 netdev->change_mtu = &ixgb_change_mtu;
415 ixgb_set_ethtool_ops(netdev);
416 netdev->tx_timeout = &ixgb_tx_timeout;
417 netdev->watchdog_timeo = 5 * HZ;
418 #ifdef CONFIG_IXGB_NAPI
419 netdev->poll = &ixgb_clean;
422 netdev->vlan_rx_register = ixgb_vlan_rx_register;
423 netdev->vlan_rx_add_vid = ixgb_vlan_rx_add_vid;
424 netdev->vlan_rx_kill_vid = ixgb_vlan_rx_kill_vid;
425 #ifdef CONFIG_NET_POLL_CONTROLLER
426 netdev->poll_controller = ixgb_netpoll;
429 strcpy(netdev->name, pci_name(pdev));
430 netdev->mem_start = mmio_start;
431 netdev->mem_end = mmio_start + mmio_len;
432 netdev->base_addr = adapter->hw.io_base;
434 adapter->bd_number = cards_found;
435 adapter->link_speed = 0;
436 adapter->link_duplex = 0;
438 /* setup the private structure */
440 if((err = ixgb_sw_init(adapter)))
443 netdev->features = NETIF_F_SG |
447 NETIF_F_HW_VLAN_FILTER;
449 netdev->features |= NETIF_F_TSO;
452 netdev->features |= NETIF_F_LLTX;
456 netdev->features |= NETIF_F_HIGHDMA;
458 /* make sure the EEPROM is good */
460 if(!ixgb_validate_eeprom_checksum(&adapter->hw)) {
461 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
466 ixgb_get_ee_mac_addr(&adapter->hw, netdev->dev_addr);
467 memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len);
469 if(!is_valid_ether_addr(netdev->perm_addr)) {
470 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
475 adapter->part_num = ixgb_get_ee_pba_number(&adapter->hw);
477 init_timer(&adapter->watchdog_timer);
478 adapter->watchdog_timer.function = &ixgb_watchdog;
479 adapter->watchdog_timer.data = (unsigned long)adapter;
481 INIT_WORK(&adapter->tx_timeout_task,
482 (void (*)(void *))ixgb_tx_timeout_task, netdev);
484 strcpy(netdev->name, "eth%d");
485 if((err = register_netdev(netdev)))
488 /* we're going to reset, so assume we have no link for now */
490 netif_carrier_off(netdev);
491 netif_stop_queue(netdev);
493 DPRINTK(PROBE, INFO, "Intel(R) PRO/10GbE Network Connection\n");
494 ixgb_check_options(adapter);
495 /* reset the hardware with the new settings */
505 iounmap(adapter->hw.hw_addr);
509 pci_release_regions(pdev);
512 pci_disable_device(pdev);
517 * ixgb_remove - Device Removal Routine
518 * @pdev: PCI device information struct
520 * ixgb_remove is called by the PCI subsystem to alert the driver
521 * that it should release a PCI device. The could be caused by a
522 * Hot-Plug event, or because the driver is going to be removed from
526 static void __devexit
527 ixgb_remove(struct pci_dev *pdev)
529 struct net_device *netdev = pci_get_drvdata(pdev);
530 struct ixgb_adapter *adapter = netdev_priv(netdev);
532 unregister_netdev(netdev);
534 iounmap(adapter->hw.hw_addr);
535 pci_release_regions(pdev);
541 * ixgb_sw_init - Initialize general software structures (struct ixgb_adapter)
542 * @adapter: board private structure to initialize
544 * ixgb_sw_init initializes the Adapter private data structure.
545 * Fields are initialized based on PCI device information and
546 * OS network device settings (MTU size).
550 ixgb_sw_init(struct ixgb_adapter *adapter)
552 struct ixgb_hw *hw = &adapter->hw;
553 struct net_device *netdev = adapter->netdev;
554 struct pci_dev *pdev = adapter->pdev;
556 /* PCI config space info */
558 hw->vendor_id = pdev->vendor;
559 hw->device_id = pdev->device;
560 hw->subsystem_vendor_id = pdev->subsystem_vendor;
561 hw->subsystem_id = pdev->subsystem_device;
563 hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
564 adapter->rx_buffer_len = hw->max_frame_size;
566 if((hw->device_id == IXGB_DEVICE_ID_82597EX)
567 || (hw->device_id == IXGB_DEVICE_ID_82597EX_CX4)
568 || (hw->device_id == IXGB_DEVICE_ID_82597EX_LR)
569 || (hw->device_id == IXGB_DEVICE_ID_82597EX_SR))
570 hw->mac_type = ixgb_82597;
572 /* should never have loaded on this device */
573 DPRINTK(PROBE, ERR, "unsupported device id\n");
576 /* enable flow control to be programmed */
579 atomic_set(&adapter->irq_sem, 1);
580 spin_lock_init(&adapter->tx_lock);
586 * ixgb_open - Called when a network interface is made active
587 * @netdev: network interface device structure
589 * Returns 0 on success, negative value on failure
591 * The open entry point is called when a network interface is made
592 * active by the system (IFF_UP). At this point all resources needed
593 * for transmit and receive operations are allocated, the interrupt
594 * handler is registered with the OS, the watchdog timer is started,
595 * and the stack is notified that the interface is ready.
599 ixgb_open(struct net_device *netdev)
601 struct ixgb_adapter *adapter = netdev_priv(netdev);
604 /* allocate transmit descriptors */
606 if((err = ixgb_setup_tx_resources(adapter)))
609 /* allocate receive descriptors */
611 if((err = ixgb_setup_rx_resources(adapter)))
614 if((err = ixgb_up(adapter)))
620 ixgb_free_rx_resources(adapter);
622 ixgb_free_tx_resources(adapter);
630 * ixgb_close - Disables a network interface
631 * @netdev: network interface device structure
633 * Returns 0, this is not allowed to fail
635 * The close entry point is called when an interface is de-activated
636 * by the OS. The hardware is still under the drivers control, but
637 * needs to be disabled. A global MAC reset is issued to stop the
638 * hardware, and all transmit and receive resources are freed.
642 ixgb_close(struct net_device *netdev)
644 struct ixgb_adapter *adapter = netdev_priv(netdev);
646 ixgb_down(adapter, TRUE);
648 ixgb_free_tx_resources(adapter);
649 ixgb_free_rx_resources(adapter);
655 * ixgb_setup_tx_resources - allocate Tx resources (Descriptors)
656 * @adapter: board private structure
658 * Return 0 on success, negative on failure
662 ixgb_setup_tx_resources(struct ixgb_adapter *adapter)
664 struct ixgb_desc_ring *txdr = &adapter->tx_ring;
665 struct pci_dev *pdev = adapter->pdev;
668 size = sizeof(struct ixgb_buffer) * txdr->count;
669 txdr->buffer_info = vmalloc(size);
670 if(!txdr->buffer_info) {
672 "Unable to allocate transmit descriptor ring memory\n");
675 memset(txdr->buffer_info, 0, size);
677 /* round up to nearest 4K */
679 txdr->size = txdr->count * sizeof(struct ixgb_tx_desc);
680 IXGB_ROUNDUP(txdr->size, 4096);
682 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
684 vfree(txdr->buffer_info);
686 "Unable to allocate transmit descriptor memory\n");
689 memset(txdr->desc, 0, txdr->size);
691 txdr->next_to_use = 0;
692 txdr->next_to_clean = 0;
698 * ixgb_configure_tx - Configure 82597 Transmit Unit after Reset.
699 * @adapter: board private structure
701 * Configure the Tx unit of the MAC after a reset.
705 ixgb_configure_tx(struct ixgb_adapter *adapter)
707 uint64_t tdba = adapter->tx_ring.dma;
708 uint32_t tdlen = adapter->tx_ring.count * sizeof(struct ixgb_tx_desc);
710 struct ixgb_hw *hw = &adapter->hw;
712 /* Setup the Base and Length of the Tx Descriptor Ring
713 * tx_ring.dma can be either a 32 or 64 bit value
716 IXGB_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
717 IXGB_WRITE_REG(hw, TDBAH, (tdba >> 32));
719 IXGB_WRITE_REG(hw, TDLEN, tdlen);
721 /* Setup the HW Tx Head and Tail descriptor pointers */
723 IXGB_WRITE_REG(hw, TDH, 0);
724 IXGB_WRITE_REG(hw, TDT, 0);
726 /* don't set up txdctl, it induces performance problems if configured
728 /* Set the Tx Interrupt Delay register */
730 IXGB_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
732 /* Program the Transmit Control Register */
734 tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE;
735 IXGB_WRITE_REG(hw, TCTL, tctl);
737 /* Setup Transmit Descriptor Settings for this adapter */
738 adapter->tx_cmd_type =
740 | (adapter->tx_int_delay_enable ? IXGB_TX_DESC_CMD_IDE : 0);
744 * ixgb_setup_rx_resources - allocate Rx resources (Descriptors)
745 * @adapter: board private structure
747 * Returns 0 on success, negative on failure
751 ixgb_setup_rx_resources(struct ixgb_adapter *adapter)
753 struct ixgb_desc_ring *rxdr = &adapter->rx_ring;
754 struct pci_dev *pdev = adapter->pdev;
757 size = sizeof(struct ixgb_buffer) * rxdr->count;
758 rxdr->buffer_info = vmalloc(size);
759 if(!rxdr->buffer_info) {
761 "Unable to allocate receive descriptor ring\n");
764 memset(rxdr->buffer_info, 0, size);
766 /* Round up to nearest 4K */
768 rxdr->size = rxdr->count * sizeof(struct ixgb_rx_desc);
769 IXGB_ROUNDUP(rxdr->size, 4096);
771 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
774 vfree(rxdr->buffer_info);
776 "Unable to allocate receive descriptors\n");
779 memset(rxdr->desc, 0, rxdr->size);
781 rxdr->next_to_clean = 0;
782 rxdr->next_to_use = 0;
788 * ixgb_setup_rctl - configure the receive control register
789 * @adapter: Board private structure
793 ixgb_setup_rctl(struct ixgb_adapter *adapter)
797 rctl = IXGB_READ_REG(&adapter->hw, RCTL);
799 rctl &= ~(3 << IXGB_RCTL_MO_SHIFT);
802 IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 |
803 IXGB_RCTL_RXEN | IXGB_RCTL_CFF |
804 (adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT);
806 rctl |= IXGB_RCTL_SECRC;
808 if (adapter->rx_buffer_len <= IXGB_RXBUFFER_2048)
809 rctl |= IXGB_RCTL_BSIZE_2048;
810 else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_4096)
811 rctl |= IXGB_RCTL_BSIZE_4096;
812 else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_8192)
813 rctl |= IXGB_RCTL_BSIZE_8192;
814 else if (adapter->rx_buffer_len <= IXGB_RXBUFFER_16384)
815 rctl |= IXGB_RCTL_BSIZE_16384;
817 IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
821 * ixgb_configure_rx - Configure 82597 Receive Unit after Reset.
822 * @adapter: board private structure
824 * Configure the Rx unit of the MAC after a reset.
828 ixgb_configure_rx(struct ixgb_adapter *adapter)
830 uint64_t rdba = adapter->rx_ring.dma;
831 uint32_t rdlen = adapter->rx_ring.count * sizeof(struct ixgb_rx_desc);
832 struct ixgb_hw *hw = &adapter->hw;
837 /* make sure receives are disabled while setting up the descriptors */
839 rctl = IXGB_READ_REG(hw, RCTL);
840 IXGB_WRITE_REG(hw, RCTL, rctl & ~IXGB_RCTL_RXEN);
842 /* set the Receive Delay Timer Register */
844 IXGB_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
846 /* Setup the Base and Length of the Rx Descriptor Ring */
848 IXGB_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
849 IXGB_WRITE_REG(hw, RDBAH, (rdba >> 32));
851 IXGB_WRITE_REG(hw, RDLEN, rdlen);
853 /* Setup the HW Rx Head and Tail Descriptor Pointers */
854 IXGB_WRITE_REG(hw, RDH, 0);
855 IXGB_WRITE_REG(hw, RDT, 0);
857 /* set up pre-fetching of receive buffers so we get some before we
858 * run out (default hardware behavior is to run out before fetching
859 * more). This sets up to fetch if HTHRESH rx descriptors are avail
860 * and the descriptors in hw cache are below PTHRESH. This avoids
861 * the hardware behavior of fetching <=512 descriptors in a single
862 * burst that pre-empts all other activity, usually causing fifo
864 /* use WTHRESH to burst write 16 descriptors or burst when RXT0 */
865 rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT |
866 RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT |
867 RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT;
868 IXGB_WRITE_REG(hw, RXDCTL, rxdctl);
870 /* Enable Receive Checksum Offload for TCP and UDP */
871 if(adapter->rx_csum == TRUE) {
872 rxcsum = IXGB_READ_REG(hw, RXCSUM);
873 rxcsum |= IXGB_RXCSUM_TUOFL;
874 IXGB_WRITE_REG(hw, RXCSUM, rxcsum);
877 /* Enable Receives */
879 IXGB_WRITE_REG(hw, RCTL, rctl);
883 * ixgb_free_tx_resources - Free Tx Resources
884 * @adapter: board private structure
886 * Free all transmit software resources
890 ixgb_free_tx_resources(struct ixgb_adapter *adapter)
892 struct pci_dev *pdev = adapter->pdev;
894 ixgb_clean_tx_ring(adapter);
896 vfree(adapter->tx_ring.buffer_info);
897 adapter->tx_ring.buffer_info = NULL;
899 pci_free_consistent(pdev, adapter->tx_ring.size,
900 adapter->tx_ring.desc, adapter->tx_ring.dma);
902 adapter->tx_ring.desc = NULL;
906 ixgb_unmap_and_free_tx_resource(struct ixgb_adapter *adapter,
907 struct ixgb_buffer *buffer_info)
909 struct pci_dev *pdev = adapter->pdev;
911 if (buffer_info->dma)
912 pci_unmap_page(pdev, buffer_info->dma, buffer_info->length,
915 if (buffer_info->skb)
916 dev_kfree_skb_any(buffer_info->skb);
918 buffer_info->skb = NULL;
919 buffer_info->dma = 0;
920 buffer_info->time_stamp = 0;
921 /* these fields must always be initialized in tx
922 * buffer_info->length = 0;
923 * buffer_info->next_to_watch = 0; */
927 * ixgb_clean_tx_ring - Free Tx Buffers
928 * @adapter: board private structure
932 ixgb_clean_tx_ring(struct ixgb_adapter *adapter)
934 struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
935 struct ixgb_buffer *buffer_info;
939 /* Free all the Tx ring sk_buffs */
941 for(i = 0; i < tx_ring->count; i++) {
942 buffer_info = &tx_ring->buffer_info[i];
943 ixgb_unmap_and_free_tx_resource(adapter, buffer_info);
946 size = sizeof(struct ixgb_buffer) * tx_ring->count;
947 memset(tx_ring->buffer_info, 0, size);
949 /* Zero out the descriptor ring */
951 memset(tx_ring->desc, 0, tx_ring->size);
953 tx_ring->next_to_use = 0;
954 tx_ring->next_to_clean = 0;
956 IXGB_WRITE_REG(&adapter->hw, TDH, 0);
957 IXGB_WRITE_REG(&adapter->hw, TDT, 0);
961 * ixgb_free_rx_resources - Free Rx Resources
962 * @adapter: board private structure
964 * Free all receive software resources
968 ixgb_free_rx_resources(struct ixgb_adapter *adapter)
970 struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
971 struct pci_dev *pdev = adapter->pdev;
973 ixgb_clean_rx_ring(adapter);
975 vfree(rx_ring->buffer_info);
976 rx_ring->buffer_info = NULL;
978 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
980 rx_ring->desc = NULL;
984 * ixgb_clean_rx_ring - Free Rx Buffers
985 * @adapter: board private structure
989 ixgb_clean_rx_ring(struct ixgb_adapter *adapter)
991 struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
992 struct ixgb_buffer *buffer_info;
993 struct pci_dev *pdev = adapter->pdev;
997 /* Free all the Rx ring sk_buffs */
999 for(i = 0; i < rx_ring->count; i++) {
1000 buffer_info = &rx_ring->buffer_info[i];
1001 if(buffer_info->skb) {
1003 pci_unmap_single(pdev,
1005 buffer_info->length,
1006 PCI_DMA_FROMDEVICE);
1008 dev_kfree_skb(buffer_info->skb);
1010 buffer_info->skb = NULL;
1014 size = sizeof(struct ixgb_buffer) * rx_ring->count;
1015 memset(rx_ring->buffer_info, 0, size);
1017 /* Zero out the descriptor ring */
1019 memset(rx_ring->desc, 0, rx_ring->size);
1021 rx_ring->next_to_clean = 0;
1022 rx_ring->next_to_use = 0;
1024 IXGB_WRITE_REG(&adapter->hw, RDH, 0);
1025 IXGB_WRITE_REG(&adapter->hw, RDT, 0);
1029 * ixgb_set_mac - Change the Ethernet Address of the NIC
1030 * @netdev: network interface device structure
1031 * @p: pointer to an address structure
1033 * Returns 0 on success, negative on failure
1037 ixgb_set_mac(struct net_device *netdev, void *p)
1039 struct ixgb_adapter *adapter = netdev_priv(netdev);
1040 struct sockaddr *addr = p;
1042 if(!is_valid_ether_addr(addr->sa_data))
1043 return -EADDRNOTAVAIL;
1045 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1047 ixgb_rar_set(&adapter->hw, addr->sa_data, 0);
1053 * ixgb_set_multi - Multicast and Promiscuous mode set
1054 * @netdev: network interface device structure
1056 * The set_multi entry point is called whenever the multicast address
1057 * list or the network interface flags are updated. This routine is
1058 * responsible for configuring the hardware for proper multicast,
1059 * promiscuous mode, and all-multi behavior.
1063 ixgb_set_multi(struct net_device *netdev)
1065 struct ixgb_adapter *adapter = netdev_priv(netdev);
1066 struct ixgb_hw *hw = &adapter->hw;
1067 struct dev_mc_list *mc_ptr;
1071 /* Check for Promiscuous and All Multicast modes */
1073 rctl = IXGB_READ_REG(hw, RCTL);
1075 if(netdev->flags & IFF_PROMISC) {
1076 rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE);
1077 } else if(netdev->flags & IFF_ALLMULTI) {
1078 rctl |= IXGB_RCTL_MPE;
1079 rctl &= ~IXGB_RCTL_UPE;
1081 rctl &= ~(IXGB_RCTL_UPE | IXGB_RCTL_MPE);
1084 if(netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES) {
1085 rctl |= IXGB_RCTL_MPE;
1086 IXGB_WRITE_REG(hw, RCTL, rctl);
1088 uint8_t mta[netdev->mc_count * IXGB_ETH_LENGTH_OF_ADDRESS];
1090 IXGB_WRITE_REG(hw, RCTL, rctl);
1092 for(i = 0, mc_ptr = netdev->mc_list; mc_ptr;
1093 i++, mc_ptr = mc_ptr->next)
1094 memcpy(&mta[i * IXGB_ETH_LENGTH_OF_ADDRESS],
1095 mc_ptr->dmi_addr, IXGB_ETH_LENGTH_OF_ADDRESS);
1097 ixgb_mc_addr_list_update(hw, mta, netdev->mc_count, 0);
1102 * ixgb_watchdog - Timer Call-back
1103 * @data: pointer to netdev cast into an unsigned long
1107 ixgb_watchdog(unsigned long data)
1109 struct ixgb_adapter *adapter = (struct ixgb_adapter *)data;
1110 struct net_device *netdev = adapter->netdev;
1111 struct ixgb_desc_ring *txdr = &adapter->tx_ring;
1113 ixgb_check_for_link(&adapter->hw);
1115 if (ixgb_check_for_bad_link(&adapter->hw)) {
1116 /* force the reset path */
1117 netif_stop_queue(netdev);
1120 if(adapter->hw.link_up) {
1121 if(!netif_carrier_ok(netdev)) {
1123 "NIC Link is Up 10000 Mbps Full Duplex\n");
1124 adapter->link_speed = 10000;
1125 adapter->link_duplex = FULL_DUPLEX;
1126 netif_carrier_on(netdev);
1127 netif_wake_queue(netdev);
1130 if(netif_carrier_ok(netdev)) {
1131 adapter->link_speed = 0;
1132 adapter->link_duplex = 0;
1133 DPRINTK(LINK, INFO, "NIC Link is Down\n");
1134 netif_carrier_off(netdev);
1135 netif_stop_queue(netdev);
1140 ixgb_update_stats(adapter);
1142 if(!netif_carrier_ok(netdev)) {
1143 if(IXGB_DESC_UNUSED(txdr) + 1 < txdr->count) {
1144 /* We've lost link, so the controller stops DMA,
1145 * but we've got queued Tx work that's never going
1146 * to get done, so reset controller to flush Tx.
1147 * (Do the reset outside of interrupt context). */
1148 schedule_work(&adapter->tx_timeout_task);
1152 /* Force detection of hung controller every watchdog period */
1153 adapter->detect_tx_hung = TRUE;
1155 /* generate an interrupt to force clean up of any stragglers */
1156 IXGB_WRITE_REG(&adapter->hw, ICS, IXGB_INT_TXDW);
1158 /* Reset the timer */
1159 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
1162 #define IXGB_TX_FLAGS_CSUM 0x00000001
1163 #define IXGB_TX_FLAGS_VLAN 0x00000002
1164 #define IXGB_TX_FLAGS_TSO 0x00000004
1167 ixgb_tso(struct ixgb_adapter *adapter, struct sk_buff *skb)
1170 struct ixgb_context_desc *context_desc;
1172 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
1173 uint16_t ipcse, tucse, mss;
1176 if (likely(skb_is_gso(skb))) {
1177 struct ixgb_buffer *buffer_info;
1178 if (skb_header_cloned(skb)) {
1179 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
1184 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
1185 mss = skb_shinfo(skb)->gso_size;
1186 skb->nh.iph->tot_len = 0;
1187 skb->nh.iph->check = 0;
1188 skb->h.th->check = ~csum_tcpudp_magic(skb->nh.iph->saddr,
1191 ipcss = skb->nh.raw - skb->data;
1192 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
1193 ipcse = skb->h.raw - skb->data - 1;
1194 tucss = skb->h.raw - skb->data;
1195 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
1198 i = adapter->tx_ring.next_to_use;
1199 context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
1200 buffer_info = &adapter->tx_ring.buffer_info[i];
1201 WARN_ON(buffer_info->dma != 0);
1203 context_desc->ipcss = ipcss;
1204 context_desc->ipcso = ipcso;
1205 context_desc->ipcse = cpu_to_le16(ipcse);
1206 context_desc->tucss = tucss;
1207 context_desc->tucso = tucso;
1208 context_desc->tucse = cpu_to_le16(tucse);
1209 context_desc->mss = cpu_to_le16(mss);
1210 context_desc->hdr_len = hdr_len;
1211 context_desc->status = 0;
1212 context_desc->cmd_type_len = cpu_to_le32(
1213 IXGB_CONTEXT_DESC_TYPE
1214 | IXGB_CONTEXT_DESC_CMD_TSE
1215 | IXGB_CONTEXT_DESC_CMD_IP
1216 | IXGB_CONTEXT_DESC_CMD_TCP
1217 | IXGB_CONTEXT_DESC_CMD_IDE
1218 | (skb->len - (hdr_len)));
1221 if(++i == adapter->tx_ring.count) i = 0;
1222 adapter->tx_ring.next_to_use = i;
1232 ixgb_tx_csum(struct ixgb_adapter *adapter, struct sk_buff *skb)
1234 struct ixgb_context_desc *context_desc;
1238 if(likely(skb->ip_summed == CHECKSUM_HW)) {
1239 struct ixgb_buffer *buffer_info;
1240 css = skb->h.raw - skb->data;
1241 cso = (skb->h.raw + skb->csum) - skb->data;
1243 i = adapter->tx_ring.next_to_use;
1244 context_desc = IXGB_CONTEXT_DESC(adapter->tx_ring, i);
1245 buffer_info = &adapter->tx_ring.buffer_info[i];
1246 WARN_ON(buffer_info->dma != 0);
1248 context_desc->tucss = css;
1249 context_desc->tucso = cso;
1250 context_desc->tucse = 0;
1251 /* zero out any previously existing data in one instruction */
1252 *(uint32_t *)&(context_desc->ipcss) = 0;
1253 context_desc->status = 0;
1254 context_desc->hdr_len = 0;
1255 context_desc->mss = 0;
1256 context_desc->cmd_type_len =
1257 cpu_to_le32(IXGB_CONTEXT_DESC_TYPE
1258 | IXGB_TX_DESC_CMD_IDE);
1260 if(++i == adapter->tx_ring.count) i = 0;
1261 adapter->tx_ring.next_to_use = i;
1269 #define IXGB_MAX_TXD_PWR 14
1270 #define IXGB_MAX_DATA_PER_TXD (1<<IXGB_MAX_TXD_PWR)
1273 ixgb_tx_map(struct ixgb_adapter *adapter, struct sk_buff *skb,
1276 struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
1277 struct ixgb_buffer *buffer_info;
1279 unsigned int offset = 0, size, count = 0, i;
1281 unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
1284 len -= skb->data_len;
1286 i = tx_ring->next_to_use;
1289 buffer_info = &tx_ring->buffer_info[i];
1290 size = min(len, IXGB_MAX_DATA_PER_TXD);
1291 buffer_info->length = size;
1292 WARN_ON(buffer_info->dma != 0);
1294 pci_map_single(adapter->pdev,
1298 buffer_info->time_stamp = jiffies;
1299 buffer_info->next_to_watch = 0;
1304 if(++i == tx_ring->count) i = 0;
1307 for(f = 0; f < nr_frags; f++) {
1308 struct skb_frag_struct *frag;
1310 frag = &skb_shinfo(skb)->frags[f];
1315 buffer_info = &tx_ring->buffer_info[i];
1316 size = min(len, IXGB_MAX_DATA_PER_TXD);
1317 buffer_info->length = size;
1319 pci_map_page(adapter->pdev,
1321 frag->page_offset + offset,
1324 buffer_info->time_stamp = jiffies;
1325 buffer_info->next_to_watch = 0;
1330 if(++i == tx_ring->count) i = 0;
1333 i = (i == 0) ? tx_ring->count - 1 : i - 1;
1334 tx_ring->buffer_info[i].skb = skb;
1335 tx_ring->buffer_info[first].next_to_watch = i;
1341 ixgb_tx_queue(struct ixgb_adapter *adapter, int count, int vlan_id,int tx_flags)
1343 struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
1344 struct ixgb_tx_desc *tx_desc = NULL;
1345 struct ixgb_buffer *buffer_info;
1346 uint32_t cmd_type_len = adapter->tx_cmd_type;
1351 if(tx_flags & IXGB_TX_FLAGS_TSO) {
1352 cmd_type_len |= IXGB_TX_DESC_CMD_TSE;
1353 popts |= (IXGB_TX_DESC_POPTS_IXSM | IXGB_TX_DESC_POPTS_TXSM);
1356 if(tx_flags & IXGB_TX_FLAGS_CSUM)
1357 popts |= IXGB_TX_DESC_POPTS_TXSM;
1359 if(tx_flags & IXGB_TX_FLAGS_VLAN) {
1360 cmd_type_len |= IXGB_TX_DESC_CMD_VLE;
1363 i = tx_ring->next_to_use;
1366 buffer_info = &tx_ring->buffer_info[i];
1367 tx_desc = IXGB_TX_DESC(*tx_ring, i);
1368 tx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
1369 tx_desc->cmd_type_len =
1370 cpu_to_le32(cmd_type_len | buffer_info->length);
1371 tx_desc->status = status;
1372 tx_desc->popts = popts;
1373 tx_desc->vlan = cpu_to_le16(vlan_id);
1375 if(++i == tx_ring->count) i = 0;
1378 tx_desc->cmd_type_len |= cpu_to_le32(IXGB_TX_DESC_CMD_EOP
1379 | IXGB_TX_DESC_CMD_RS );
1381 /* Force memory writes to complete before letting h/w
1382 * know there are new descriptors to fetch. (Only
1383 * applicable for weak-ordered memory model archs,
1384 * such as IA-64). */
1387 tx_ring->next_to_use = i;
1388 IXGB_WRITE_REG(&adapter->hw, TDT, i);
1391 /* Tx Descriptors needed, worst case */
1392 #define TXD_USE_COUNT(S) (((S) >> IXGB_MAX_TXD_PWR) + \
1393 (((S) & (IXGB_MAX_DATA_PER_TXD - 1)) ? 1 : 0))
1394 #define DESC_NEEDED TXD_USE_COUNT(IXGB_MAX_DATA_PER_TXD) + \
1395 MAX_SKB_FRAGS * TXD_USE_COUNT(PAGE_SIZE) + 1
1398 ixgb_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1400 struct ixgb_adapter *adapter = netdev_priv(netdev);
1402 unsigned int tx_flags = 0;
1403 unsigned long flags;
1408 dev_kfree_skb_any(skb);
1413 local_irq_save(flags);
1414 if (!spin_trylock(&adapter->tx_lock)) {
1415 /* Collision - tell upper layer to requeue */
1416 local_irq_restore(flags);
1417 return NETDEV_TX_LOCKED;
1420 spin_lock_irqsave(&adapter->tx_lock, flags);
1423 if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED)) {
1424 netif_stop_queue(netdev);
1425 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1426 return NETDEV_TX_BUSY;
1429 #ifndef NETIF_F_LLTX
1430 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1433 if(adapter->vlgrp && vlan_tx_tag_present(skb)) {
1434 tx_flags |= IXGB_TX_FLAGS_VLAN;
1435 vlan_id = vlan_tx_tag_get(skb);
1438 first = adapter->tx_ring.next_to_use;
1440 tso = ixgb_tso(adapter, skb);
1442 dev_kfree_skb_any(skb);
1444 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1446 return NETDEV_TX_OK;
1450 tx_flags |= IXGB_TX_FLAGS_TSO;
1451 else if(ixgb_tx_csum(adapter, skb))
1452 tx_flags |= IXGB_TX_FLAGS_CSUM;
1454 ixgb_tx_queue(adapter, ixgb_tx_map(adapter, skb, first), vlan_id,
1457 netdev->trans_start = jiffies;
1460 /* Make sure there is space in the ring for the next send. */
1461 if(unlikely(IXGB_DESC_UNUSED(&adapter->tx_ring) < DESC_NEEDED))
1462 netif_stop_queue(netdev);
1464 spin_unlock_irqrestore(&adapter->tx_lock, flags);
1467 return NETDEV_TX_OK;
1471 * ixgb_tx_timeout - Respond to a Tx Hang
1472 * @netdev: network interface device structure
1476 ixgb_tx_timeout(struct net_device *netdev)
1478 struct ixgb_adapter *adapter = netdev_priv(netdev);
1480 /* Do the reset outside of interrupt context */
1481 schedule_work(&adapter->tx_timeout_task);
1485 ixgb_tx_timeout_task(struct net_device *netdev)
1487 struct ixgb_adapter *adapter = netdev_priv(netdev);
1489 adapter->tx_timeout_count++;
1490 ixgb_down(adapter, TRUE);
1495 * ixgb_get_stats - Get System Network Statistics
1496 * @netdev: network interface device structure
1498 * Returns the address of the device statistics structure.
1499 * The statistics are actually updated from the timer callback.
1502 static struct net_device_stats *
1503 ixgb_get_stats(struct net_device *netdev)
1505 struct ixgb_adapter *adapter = netdev_priv(netdev);
1507 return &adapter->net_stats;
1511 * ixgb_change_mtu - Change the Maximum Transfer Unit
1512 * @netdev: network interface device structure
1513 * @new_mtu: new value for maximum frame size
1515 * Returns 0 on success, negative on failure
1519 ixgb_change_mtu(struct net_device *netdev, int new_mtu)
1521 struct ixgb_adapter *adapter = netdev_priv(netdev);
1522 int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
1523 int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
1526 if((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH)
1527 || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) {
1528 DPRINTK(PROBE, ERR, "Invalid MTU setting %d\n", new_mtu);
1532 adapter->rx_buffer_len = max_frame;
1534 netdev->mtu = new_mtu;
1536 if ((old_max_frame != max_frame) && netif_running(netdev)) {
1537 ixgb_down(adapter, TRUE);
1545 * ixgb_update_stats - Update the board statistics counters.
1546 * @adapter: board private structure
1550 ixgb_update_stats(struct ixgb_adapter *adapter)
1552 struct net_device *netdev = adapter->netdev;
1554 if((netdev->flags & IFF_PROMISC) || (netdev->flags & IFF_ALLMULTI) ||
1555 (netdev->mc_count > IXGB_MAX_NUM_MULTICAST_ADDRESSES)) {
1556 u64 multi = IXGB_READ_REG(&adapter->hw, MPRCL);
1557 u32 bcast_l = IXGB_READ_REG(&adapter->hw, BPRCL);
1558 u32 bcast_h = IXGB_READ_REG(&adapter->hw, BPRCH);
1559 u64 bcast = ((u64)bcast_h << 32) | bcast_l;
1561 multi |= ((u64)IXGB_READ_REG(&adapter->hw, MPRCH) << 32);
1562 /* fix up multicast stats by removing broadcasts */
1566 adapter->stats.mprcl += (multi & 0xFFFFFFFF);
1567 adapter->stats.mprch += (multi >> 32);
1568 adapter->stats.bprcl += bcast_l;
1569 adapter->stats.bprch += bcast_h;
1571 adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
1572 adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
1573 adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
1574 adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
1576 adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL);
1577 adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH);
1578 adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL);
1579 adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH);
1580 adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL);
1581 adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH);
1582 adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL);
1583 adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH);
1584 adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL);
1585 adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH);
1586 adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL);
1587 adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH);
1588 adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL);
1589 adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH);
1590 adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC);
1591 adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC);
1592 adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC);
1593 adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC);
1594 adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS);
1595 adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC);
1596 adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC);
1597 adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC);
1598 adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL);
1599 adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH);
1600 adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL);
1601 adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH);
1602 adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL);
1603 adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH);
1604 adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL);
1605 adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH);
1606 adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL);
1607 adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH);
1608 adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL);
1609 adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH);
1610 adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL);
1611 adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH);
1612 adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL);
1613 adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH);
1614 adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL);
1615 adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH);
1616 adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC);
1617 adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C);
1618 adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC);
1619 adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC);
1620 adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC);
1621 adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC);
1622 adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC);
1623 adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC);
1624 adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC);
1625 adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC);
1626 adapter->stats.mcftc += IXGB_READ_REG(&adapter->hw, MCFTC);
1627 adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC);
1628 adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC);
1629 adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC);
1630 adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC);
1631 adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC);
1633 /* Fill out the OS statistics structure */
1635 adapter->net_stats.rx_packets = adapter->stats.gprcl;
1636 adapter->net_stats.tx_packets = adapter->stats.gptcl;
1637 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
1638 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
1639 adapter->net_stats.multicast = adapter->stats.mprcl;
1640 adapter->net_stats.collisions = 0;
1642 /* ignore RLEC as it reports errors for padded (<64bytes) frames
1643 * with a length in the type/len field */
1644 adapter->net_stats.rx_errors =
1645 /* adapter->stats.rnbc + */ adapter->stats.crcerrs +
1646 adapter->stats.ruc +
1647 adapter->stats.roc /*+ adapter->stats.rlec */ +
1648 adapter->stats.icbc +
1649 adapter->stats.ecbc + adapter->stats.mpc;
1652 * adapter->net_stats.rx_length_errors = adapter->stats.rlec;
1655 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
1656 adapter->net_stats.rx_fifo_errors = adapter->stats.mpc;
1657 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
1658 adapter->net_stats.rx_over_errors = adapter->stats.mpc;
1660 adapter->net_stats.tx_errors = 0;
1661 adapter->net_stats.rx_frame_errors = 0;
1662 adapter->net_stats.tx_aborted_errors = 0;
1663 adapter->net_stats.tx_carrier_errors = 0;
1664 adapter->net_stats.tx_fifo_errors = 0;
1665 adapter->net_stats.tx_heartbeat_errors = 0;
1666 adapter->net_stats.tx_window_errors = 0;
1669 #define IXGB_MAX_INTR 10
1671 * ixgb_intr - Interrupt Handler
1672 * @irq: interrupt number
1673 * @data: pointer to a network interface device structure
1674 * @pt_regs: CPU registers structure
1678 ixgb_intr(int irq, void *data, struct pt_regs *regs)
1680 struct net_device *netdev = data;
1681 struct ixgb_adapter *adapter = netdev_priv(netdev);
1682 struct ixgb_hw *hw = &adapter->hw;
1683 uint32_t icr = IXGB_READ_REG(hw, ICR);
1684 #ifndef CONFIG_IXGB_NAPI
1689 return IRQ_NONE; /* Not our interrupt */
1691 if(unlikely(icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC))) {
1692 mod_timer(&adapter->watchdog_timer, jiffies);
1695 #ifdef CONFIG_IXGB_NAPI
1696 if(netif_rx_schedule_prep(netdev)) {
1698 /* Disable interrupts and register for poll. The flush
1699 of the posted write is intentionally left out.
1702 atomic_inc(&adapter->irq_sem);
1703 IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
1704 __netif_rx_schedule(netdev);
1707 /* yes, that is actually a & and it is meant to make sure that
1708 * every pass through this for loop checks both receive and
1709 * transmit queues for completed descriptors, intended to
1710 * avoid starvation issues and assist tx/rx fairness. */
1711 for(i = 0; i < IXGB_MAX_INTR; i++)
1712 if(!ixgb_clean_rx_irq(adapter) &
1713 !ixgb_clean_tx_irq(adapter))
1719 #ifdef CONFIG_IXGB_NAPI
1721 * ixgb_clean - NAPI Rx polling callback
1722 * @adapter: board private structure
1726 ixgb_clean(struct net_device *netdev, int *budget)
1728 struct ixgb_adapter *adapter = netdev_priv(netdev);
1729 int work_to_do = min(*budget, netdev->quota);
1733 tx_cleaned = ixgb_clean_tx_irq(adapter);
1734 ixgb_clean_rx_irq(adapter, &work_done, work_to_do);
1736 *budget -= work_done;
1737 netdev->quota -= work_done;
1739 /* if no Tx and not enough Rx work done, exit the polling mode */
1740 if((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) {
1741 netif_rx_complete(netdev);
1742 ixgb_irq_enable(adapter);
1751 * ixgb_clean_tx_irq - Reclaim resources after transmit completes
1752 * @adapter: board private structure
1756 ixgb_clean_tx_irq(struct ixgb_adapter *adapter)
1758 struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
1759 struct net_device *netdev = adapter->netdev;
1760 struct ixgb_tx_desc *tx_desc, *eop_desc;
1761 struct ixgb_buffer *buffer_info;
1762 unsigned int i, eop;
1763 boolean_t cleaned = FALSE;
1765 i = tx_ring->next_to_clean;
1766 eop = tx_ring->buffer_info[i].next_to_watch;
1767 eop_desc = IXGB_TX_DESC(*tx_ring, eop);
1769 while(eop_desc->status & IXGB_TX_DESC_STATUS_DD) {
1771 for(cleaned = FALSE; !cleaned; ) {
1772 tx_desc = IXGB_TX_DESC(*tx_ring, i);
1773 buffer_info = &tx_ring->buffer_info[i];
1776 & (IXGB_TX_DESC_POPTS_TXSM |
1777 IXGB_TX_DESC_POPTS_IXSM))
1778 adapter->hw_csum_tx_good++;
1780 ixgb_unmap_and_free_tx_resource(adapter, buffer_info);
1782 *(uint32_t *)&(tx_desc->status) = 0;
1784 cleaned = (i == eop);
1785 if(++i == tx_ring->count) i = 0;
1788 eop = tx_ring->buffer_info[i].next_to_watch;
1789 eop_desc = IXGB_TX_DESC(*tx_ring, eop);
1792 tx_ring->next_to_clean = i;
1794 if (unlikely(netif_queue_stopped(netdev))) {
1795 spin_lock(&adapter->tx_lock);
1796 if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
1797 (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED))
1798 netif_wake_queue(netdev);
1799 spin_unlock(&adapter->tx_lock);
1802 if(adapter->detect_tx_hung) {
1803 /* detect a transmit hang in hardware, this serializes the
1804 * check with the clearing of time_stamp and movement of i */
1805 adapter->detect_tx_hung = FALSE;
1806 if (tx_ring->buffer_info[eop].dma &&
1807 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + HZ)
1808 && !(IXGB_READ_REG(&adapter->hw, STATUS) &
1809 IXGB_STATUS_TXOFF)) {
1810 /* detected Tx unit hang */
1811 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
1814 " next_to_use <%x>\n"
1815 " next_to_clean <%x>\n"
1816 "buffer_info[next_to_clean]\n"
1817 " time_stamp <%lx>\n"
1818 " next_to_watch <%x>\n"
1820 " next_to_watch.status <%x>\n",
1821 IXGB_READ_REG(&adapter->hw, TDH),
1822 IXGB_READ_REG(&adapter->hw, TDT),
1823 tx_ring->next_to_use,
1824 tx_ring->next_to_clean,
1825 tx_ring->buffer_info[eop].time_stamp,
1829 netif_stop_queue(netdev);
1837 * ixgb_rx_checksum - Receive Checksum Offload for 82597.
1838 * @adapter: board private structure
1839 * @rx_desc: receive descriptor
1840 * @sk_buff: socket buffer with received data
1844 ixgb_rx_checksum(struct ixgb_adapter *adapter,
1845 struct ixgb_rx_desc *rx_desc,
1846 struct sk_buff *skb)
1848 /* Ignore Checksum bit is set OR
1849 * TCP Checksum has not been calculated
1851 if((rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) ||
1852 (!(rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS))) {
1853 skb->ip_summed = CHECKSUM_NONE;
1857 /* At this point we know the hardware did the TCP checksum */
1858 /* now look at the TCP checksum error bit */
1859 if(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE) {
1860 /* let the stack verify checksum errors */
1861 skb->ip_summed = CHECKSUM_NONE;
1862 adapter->hw_csum_rx_error++;
1864 /* TCP checksum is good */
1865 skb->ip_summed = CHECKSUM_UNNECESSARY;
1866 adapter->hw_csum_rx_good++;
1871 * ixgb_clean_rx_irq - Send received data up the network stack,
1872 * @adapter: board private structure
1876 #ifdef CONFIG_IXGB_NAPI
1877 ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
1879 ixgb_clean_rx_irq(struct ixgb_adapter *adapter)
1882 struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
1883 struct net_device *netdev = adapter->netdev;
1884 struct pci_dev *pdev = adapter->pdev;
1885 struct ixgb_rx_desc *rx_desc, *next_rxd;
1886 struct ixgb_buffer *buffer_info, *next_buffer, *next2_buffer;
1889 boolean_t cleaned = FALSE;
1891 i = rx_ring->next_to_clean;
1892 rx_desc = IXGB_RX_DESC(*rx_ring, i);
1893 buffer_info = &rx_ring->buffer_info[i];
1895 while(rx_desc->status & IXGB_RX_DESC_STATUS_DD) {
1896 struct sk_buff *skb, *next_skb;
1899 #ifdef CONFIG_IXGB_NAPI
1900 if(*work_done >= work_to_do)
1905 status = rx_desc->status;
1906 skb = buffer_info->skb;
1907 buffer_info->skb = NULL;
1909 prefetch(skb->data);
1911 if(++i == rx_ring->count) i = 0;
1912 next_rxd = IXGB_RX_DESC(*rx_ring, i);
1915 if((j = i + 1) == rx_ring->count) j = 0;
1916 next2_buffer = &rx_ring->buffer_info[j];
1917 prefetch(next2_buffer);
1919 next_buffer = &rx_ring->buffer_info[i];
1920 next_skb = next_buffer->skb;
1925 pci_unmap_single(pdev,
1927 buffer_info->length,
1928 PCI_DMA_FROMDEVICE);
1930 length = le16_to_cpu(rx_desc->length);
1932 if(unlikely(!(status & IXGB_RX_DESC_STATUS_EOP))) {
1934 /* All receives must fit into a single buffer */
1936 IXGB_DBG("Receive packet consumed multiple buffers "
1937 "length<%x>\n", length);
1939 dev_kfree_skb_irq(skb);
1943 if (unlikely(rx_desc->errors
1944 & (IXGB_RX_DESC_ERRORS_CE | IXGB_RX_DESC_ERRORS_SE
1945 | IXGB_RX_DESC_ERRORS_P |
1946 IXGB_RX_DESC_ERRORS_RXE))) {
1948 dev_kfree_skb_irq(skb);
1952 /* code added for copybreak, this should improve
1953 * performance for small packets with large amounts
1954 * of reassembly being done in the stack */
1955 #define IXGB_CB_LENGTH 256
1956 if (length < IXGB_CB_LENGTH) {
1957 struct sk_buff *new_skb =
1958 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
1960 skb_reserve(new_skb, NET_IP_ALIGN);
1961 new_skb->dev = netdev;
1962 memcpy(new_skb->data - NET_IP_ALIGN,
1963 skb->data - NET_IP_ALIGN,
1964 length + NET_IP_ALIGN);
1965 /* save the skb in buffer_info as good */
1966 buffer_info->skb = skb;
1970 /* end copybreak code */
1973 skb_put(skb, length);
1975 /* Receive Checksum Offload */
1976 ixgb_rx_checksum(adapter, rx_desc, skb);
1978 skb->protocol = eth_type_trans(skb, netdev);
1979 #ifdef CONFIG_IXGB_NAPI
1980 if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
1981 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
1982 le16_to_cpu(rx_desc->special) &
1983 IXGB_RX_DESC_SPECIAL_VLAN_MASK);
1985 netif_receive_skb(skb);
1987 #else /* CONFIG_IXGB_NAPI */
1988 if(adapter->vlgrp && (status & IXGB_RX_DESC_STATUS_VP)) {
1989 vlan_hwaccel_rx(skb, adapter->vlgrp,
1990 le16_to_cpu(rx_desc->special) &
1991 IXGB_RX_DESC_SPECIAL_VLAN_MASK);
1995 #endif /* CONFIG_IXGB_NAPI */
1996 netdev->last_rx = jiffies;
1999 /* clean up descriptor, might be written over by hw */
2000 rx_desc->status = 0;
2002 /* use prefetched values */
2004 buffer_info = next_buffer;
2007 rx_ring->next_to_clean = i;
2009 ixgb_alloc_rx_buffers(adapter);
2015 * ixgb_alloc_rx_buffers - Replace used receive buffers
2016 * @adapter: address of board private structure
2020 ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter)
2022 struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
2023 struct net_device *netdev = adapter->netdev;
2024 struct pci_dev *pdev = adapter->pdev;
2025 struct ixgb_rx_desc *rx_desc;
2026 struct ixgb_buffer *buffer_info;
2027 struct sk_buff *skb;
2029 int num_group_tail_writes;
2032 i = rx_ring->next_to_use;
2033 buffer_info = &rx_ring->buffer_info[i];
2034 cleancount = IXGB_DESC_UNUSED(rx_ring);
2036 num_group_tail_writes = IXGB_RX_BUFFER_WRITE;
2038 /* leave three descriptors unused */
2039 while(--cleancount > 2) {
2040 /* recycle! its good for you */
2041 if (!(skb = buffer_info->skb))
2042 skb = netdev_alloc_skb(netdev, adapter->rx_buffer_len
2049 if (unlikely(!skb)) {
2050 /* Better luck next round */
2051 adapter->alloc_rx_buff_failed++;
2055 /* Make buffer alignment 2 beyond a 16 byte boundary
2056 * this will result in a 16 byte aligned IP header after
2057 * the 14 byte MAC header is removed
2059 skb_reserve(skb, NET_IP_ALIGN);
2063 buffer_info->skb = skb;
2064 buffer_info->length = adapter->rx_buffer_len;
2066 buffer_info->dma = pci_map_single(pdev,
2068 adapter->rx_buffer_len,
2069 PCI_DMA_FROMDEVICE);
2071 rx_desc = IXGB_RX_DESC(*rx_ring, i);
2072 rx_desc->buff_addr = cpu_to_le64(buffer_info->dma);
2073 /* guarantee DD bit not set now before h/w gets descriptor
2074 * this is the rest of the workaround for h/w double
2076 rx_desc->status = 0;
2079 if(++i == rx_ring->count) i = 0;
2080 buffer_info = &rx_ring->buffer_info[i];
2083 if (likely(rx_ring->next_to_use != i)) {
2084 rx_ring->next_to_use = i;
2085 if (unlikely(i-- == 0))
2086 i = (rx_ring->count - 1);
2088 /* Force memory writes to complete before letting h/w
2089 * know there are new descriptors to fetch. (Only
2090 * applicable for weak-ordered memory model archs, such
2093 IXGB_WRITE_REG(&adapter->hw, RDT, i);
2098 * ixgb_vlan_rx_register - enables or disables vlan tagging/stripping.
2100 * @param netdev network interface device structure
2101 * @param grp indicates to enable or disable tagging/stripping
2104 ixgb_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2106 struct ixgb_adapter *adapter = netdev_priv(netdev);
2107 uint32_t ctrl, rctl;
2109 ixgb_irq_disable(adapter);
2110 adapter->vlgrp = grp;
2113 /* enable VLAN tag insert/strip */
2114 ctrl = IXGB_READ_REG(&adapter->hw, CTRL0);
2115 ctrl |= IXGB_CTRL0_VME;
2116 IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl);
2118 /* enable VLAN receive filtering */
2120 rctl = IXGB_READ_REG(&adapter->hw, RCTL);
2121 rctl |= IXGB_RCTL_VFE;
2122 rctl &= ~IXGB_RCTL_CFIEN;
2123 IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
2125 /* disable VLAN tag insert/strip */
2127 ctrl = IXGB_READ_REG(&adapter->hw, CTRL0);
2128 ctrl &= ~IXGB_CTRL0_VME;
2129 IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl);
2131 /* disable VLAN filtering */
2133 rctl = IXGB_READ_REG(&adapter->hw, RCTL);
2134 rctl &= ~IXGB_RCTL_VFE;
2135 IXGB_WRITE_REG(&adapter->hw, RCTL, rctl);
2138 ixgb_irq_enable(adapter);
2142 ixgb_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
2144 struct ixgb_adapter *adapter = netdev_priv(netdev);
2145 uint32_t vfta, index;
2147 /* add VID to filter table */
2149 index = (vid >> 5) & 0x7F;
2150 vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2151 vfta |= (1 << (vid & 0x1F));
2152 ixgb_write_vfta(&adapter->hw, index, vfta);
2156 ixgb_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
2158 struct ixgb_adapter *adapter = netdev_priv(netdev);
2159 uint32_t vfta, index;
2161 ixgb_irq_disable(adapter);
2164 adapter->vlgrp->vlan_devices[vid] = NULL;
2166 ixgb_irq_enable(adapter);
2168 /* remove VID from filter table*/
2170 index = (vid >> 5) & 0x7F;
2171 vfta = IXGB_READ_REG_ARRAY(&adapter->hw, VFTA, index);
2172 vfta &= ~(1 << (vid & 0x1F));
2173 ixgb_write_vfta(&adapter->hw, index, vfta);
2177 ixgb_restore_vlan(struct ixgb_adapter *adapter)
2179 ixgb_vlan_rx_register(adapter->netdev, adapter->vlgrp);
2181 if(adapter->vlgrp) {
2183 for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
2184 if(!adapter->vlgrp->vlan_devices[vid])
2186 ixgb_vlan_rx_add_vid(adapter->netdev, vid);
2191 #ifdef CONFIG_NET_POLL_CONTROLLER
2193 * Polling 'interrupt' - used by things like netconsole to send skbs
2194 * without having to re-enable interrupts. It's not called while
2195 * the interrupt routine is executing.
2198 static void ixgb_netpoll(struct net_device *dev)
2200 struct ixgb_adapter *adapter = netdev_priv(dev);
2202 disable_irq(adapter->pdev->irq);
2203 ixgb_intr(adapter->pdev->irq, dev, NULL);
2204 enable_irq(adapter->pdev->irq);