1 /*******************************************************************************
4 Copyright(c) 1999 - 2005 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 *******************************************************************************/
33 * o Accepted ethtool cleanup patch from Stephen Hemminger
35 * o applied Anton's patch to resolve tx hang in hardware
36 * o Applied Andrew Mortons patch - e1000 stops working after resume
39 char e1000_driver_name[] = "e1000";
40 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
41 #ifndef CONFIG_E1000_NAPI
44 #define DRIVERNAPI "-NAPI"
46 #define DRV_VERSION "6.3.9-k2"DRIVERNAPI
47 char e1000_driver_version[] = DRV_VERSION;
48 static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation.";
50 /* e1000_pci_tbl - PCI Device ID Table
52 * Last entry must be all 0s
55 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
57 static struct pci_device_id e1000_pci_tbl[] = {
58 INTEL_E1000_ETHERNET_DEVICE(0x1000),
59 INTEL_E1000_ETHERNET_DEVICE(0x1001),
60 INTEL_E1000_ETHERNET_DEVICE(0x1004),
61 INTEL_E1000_ETHERNET_DEVICE(0x1008),
62 INTEL_E1000_ETHERNET_DEVICE(0x1009),
63 INTEL_E1000_ETHERNET_DEVICE(0x100C),
64 INTEL_E1000_ETHERNET_DEVICE(0x100D),
65 INTEL_E1000_ETHERNET_DEVICE(0x100E),
66 INTEL_E1000_ETHERNET_DEVICE(0x100F),
67 INTEL_E1000_ETHERNET_DEVICE(0x1010),
68 INTEL_E1000_ETHERNET_DEVICE(0x1011),
69 INTEL_E1000_ETHERNET_DEVICE(0x1012),
70 INTEL_E1000_ETHERNET_DEVICE(0x1013),
71 INTEL_E1000_ETHERNET_DEVICE(0x1014),
72 INTEL_E1000_ETHERNET_DEVICE(0x1015),
73 INTEL_E1000_ETHERNET_DEVICE(0x1016),
74 INTEL_E1000_ETHERNET_DEVICE(0x1017),
75 INTEL_E1000_ETHERNET_DEVICE(0x1018),
76 INTEL_E1000_ETHERNET_DEVICE(0x1019),
77 INTEL_E1000_ETHERNET_DEVICE(0x101A),
78 INTEL_E1000_ETHERNET_DEVICE(0x101D),
79 INTEL_E1000_ETHERNET_DEVICE(0x101E),
80 INTEL_E1000_ETHERNET_DEVICE(0x1026),
81 INTEL_E1000_ETHERNET_DEVICE(0x1027),
82 INTEL_E1000_ETHERNET_DEVICE(0x1028),
83 INTEL_E1000_ETHERNET_DEVICE(0x105E),
84 INTEL_E1000_ETHERNET_DEVICE(0x105F),
85 INTEL_E1000_ETHERNET_DEVICE(0x1060),
86 INTEL_E1000_ETHERNET_DEVICE(0x1075),
87 INTEL_E1000_ETHERNET_DEVICE(0x1076),
88 INTEL_E1000_ETHERNET_DEVICE(0x1077),
89 INTEL_E1000_ETHERNET_DEVICE(0x1078),
90 INTEL_E1000_ETHERNET_DEVICE(0x1079),
91 INTEL_E1000_ETHERNET_DEVICE(0x107A),
92 INTEL_E1000_ETHERNET_DEVICE(0x107B),
93 INTEL_E1000_ETHERNET_DEVICE(0x107C),
94 INTEL_E1000_ETHERNET_DEVICE(0x107D),
95 INTEL_E1000_ETHERNET_DEVICE(0x107E),
96 INTEL_E1000_ETHERNET_DEVICE(0x107F),
97 INTEL_E1000_ETHERNET_DEVICE(0x108A),
98 INTEL_E1000_ETHERNET_DEVICE(0x108B),
99 INTEL_E1000_ETHERNET_DEVICE(0x108C),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 /* required last entry */
105 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
107 int e1000_up(struct e1000_adapter *adapter);
108 void e1000_down(struct e1000_adapter *adapter);
109 void e1000_reset(struct e1000_adapter *adapter);
110 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
111 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
112 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
113 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
114 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
115 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
116 struct e1000_tx_ring *txdr);
117 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
118 struct e1000_rx_ring *rxdr);
119 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
120 struct e1000_tx_ring *tx_ring);
121 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
122 struct e1000_rx_ring *rx_ring);
123 void e1000_update_stats(struct e1000_adapter *adapter);
125 /* Local Function Prototypes */
127 static int e1000_init_module(void);
128 static void e1000_exit_module(void);
129 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
130 static void __devexit e1000_remove(struct pci_dev *pdev);
131 static int e1000_alloc_queues(struct e1000_adapter *adapter);
132 #ifdef CONFIG_E1000_MQ
133 static void e1000_setup_queue_mapping(struct e1000_adapter *adapter);
135 static int e1000_sw_init(struct e1000_adapter *adapter);
136 static int e1000_open(struct net_device *netdev);
137 static int e1000_close(struct net_device *netdev);
138 static void e1000_configure_tx(struct e1000_adapter *adapter);
139 static void e1000_configure_rx(struct e1000_adapter *adapter);
140 static void e1000_setup_rctl(struct e1000_adapter *adapter);
141 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
142 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
143 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
144 struct e1000_tx_ring *tx_ring);
145 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
146 struct e1000_rx_ring *rx_ring);
147 static void e1000_set_multi(struct net_device *netdev);
148 static void e1000_update_phy_info(unsigned long data);
149 static void e1000_watchdog(unsigned long data);
150 static void e1000_watchdog_task(struct e1000_adapter *adapter);
151 static void e1000_82547_tx_fifo_stall(unsigned long data);
152 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
153 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
154 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
155 static int e1000_set_mac(struct net_device *netdev, void *p);
156 static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs);
157 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter,
158 struct e1000_tx_ring *tx_ring);
159 #ifdef CONFIG_E1000_NAPI
160 static int e1000_clean(struct net_device *poll_dev, int *budget);
161 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
162 struct e1000_rx_ring *rx_ring,
163 int *work_done, int work_to_do);
164 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
165 struct e1000_rx_ring *rx_ring,
166 int *work_done, int work_to_do);
168 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
169 struct e1000_rx_ring *rx_ring);
170 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
171 struct e1000_rx_ring *rx_ring);
173 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
174 struct e1000_rx_ring *rx_ring);
175 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
176 struct e1000_rx_ring *rx_ring);
177 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
178 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
180 void e1000_set_ethtool_ops(struct net_device *netdev);
181 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
182 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
183 static void e1000_tx_timeout(struct net_device *dev);
184 static void e1000_tx_timeout_task(struct net_device *dev);
185 static void e1000_smartspeed(struct e1000_adapter *adapter);
186 static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
187 struct sk_buff *skb);
189 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
190 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
191 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
192 static void e1000_restore_vlan(struct e1000_adapter *adapter);
195 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
196 static int e1000_resume(struct pci_dev *pdev);
199 #ifdef CONFIG_NET_POLL_CONTROLLER
200 /* for netdump / net console */
201 static void e1000_netpoll (struct net_device *netdev);
204 #ifdef CONFIG_E1000_MQ
205 /* for multiple Rx queues */
206 void e1000_rx_schedule(void *data);
209 /* Exported from other modules */
211 extern void e1000_check_options(struct e1000_adapter *adapter);
213 static struct pci_driver e1000_driver = {
214 .name = e1000_driver_name,
215 .id_table = e1000_pci_tbl,
216 .probe = e1000_probe,
217 .remove = __devexit_p(e1000_remove),
218 /* Power Managment Hooks */
220 .suspend = e1000_suspend,
221 .resume = e1000_resume
225 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
226 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(DRV_VERSION);
230 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
231 module_param(debug, int, 0);
232 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
235 * e1000_init_module - Driver Registration Routine
237 * e1000_init_module is the first routine called when the driver is
238 * loaded. All it does is register with the PCI subsystem.
242 e1000_init_module(void)
245 printk(KERN_INFO "%s - version %s\n",
246 e1000_driver_string, e1000_driver_version);
248 printk(KERN_INFO "%s\n", e1000_copyright);
250 ret = pci_module_init(&e1000_driver);
255 module_init(e1000_init_module);
258 * e1000_exit_module - Driver Exit Cleanup Routine
260 * e1000_exit_module is called just before the driver is removed
265 e1000_exit_module(void)
267 pci_unregister_driver(&e1000_driver);
270 module_exit(e1000_exit_module);
273 * e1000_irq_disable - Mask off interrupt generation on the NIC
274 * @adapter: board private structure
278 e1000_irq_disable(struct e1000_adapter *adapter)
280 atomic_inc(&adapter->irq_sem);
281 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
282 E1000_WRITE_FLUSH(&adapter->hw);
283 synchronize_irq(adapter->pdev->irq);
287 * e1000_irq_enable - Enable default interrupt generation settings
288 * @adapter: board private structure
292 e1000_irq_enable(struct e1000_adapter *adapter)
294 if(likely(atomic_dec_and_test(&adapter->irq_sem))) {
295 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
296 E1000_WRITE_FLUSH(&adapter->hw);
301 e1000_update_mng_vlan(struct e1000_adapter *adapter)
303 struct net_device *netdev = adapter->netdev;
304 uint16_t vid = adapter->hw.mng_cookie.vlan_id;
305 uint16_t old_vid = adapter->mng_vlan_id;
307 if(!adapter->vlgrp->vlan_devices[vid]) {
308 if(adapter->hw.mng_cookie.status &
309 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
310 e1000_vlan_rx_add_vid(netdev, vid);
311 adapter->mng_vlan_id = vid;
313 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
315 if((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
317 !adapter->vlgrp->vlan_devices[old_vid])
318 e1000_vlan_rx_kill_vid(netdev, old_vid);
324 * e1000_release_hw_control - release control of the h/w to f/w
325 * @adapter: address of board private structure
327 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
328 * For ASF and Pass Through versions of f/w this means that the
329 * driver is no longer loaded. For AMT version (only with 82573) i
330 * of the f/w this means that the netowrk i/f is closed.
335 e1000_release_hw_control(struct e1000_adapter *adapter)
340 /* Let firmware taken over control of h/w */
341 switch (adapter->hw.mac_type) {
344 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
345 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
346 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
349 swsm = E1000_READ_REG(&adapter->hw, SWSM);
350 E1000_WRITE_REG(&adapter->hw, SWSM,
351 swsm & ~E1000_SWSM_DRV_LOAD);
358 * e1000_get_hw_control - get control of the h/w from f/w
359 * @adapter: address of board private structure
361 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
362 * For ASF and Pass Through versions of f/w this means that
363 * the driver is loaded. For AMT version (only with 82573)
364 * of the f/w this means that the netowrk i/f is open.
369 e1000_get_hw_control(struct e1000_adapter *adapter)
373 /* Let firmware know the driver has taken over */
374 switch (adapter->hw.mac_type) {
377 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
378 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
379 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
382 swsm = E1000_READ_REG(&adapter->hw, SWSM);
383 E1000_WRITE_REG(&adapter->hw, SWSM,
384 swsm | E1000_SWSM_DRV_LOAD);
392 e1000_up(struct e1000_adapter *adapter)
394 struct net_device *netdev = adapter->netdev;
397 /* hardware has been reset, we need to reload some things */
399 /* Reset the PHY if it was previously powered down */
400 if(adapter->hw.media_type == e1000_media_type_copper) {
402 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
403 if(mii_reg & MII_CR_POWER_DOWN)
404 e1000_phy_reset(&adapter->hw);
407 e1000_set_multi(netdev);
409 e1000_restore_vlan(adapter);
411 e1000_configure_tx(adapter);
412 e1000_setup_rctl(adapter);
413 e1000_configure_rx(adapter);
414 for (i = 0; i < adapter->num_rx_queues; i++) {
415 adapter->alloc_rx_buf(adapter, &adapter->rx_ring[i]);
418 #ifdef CONFIG_PCI_MSI
419 if(adapter->hw.mac_type > e1000_82547_rev_2) {
420 adapter->have_msi = TRUE;
421 if((err = pci_enable_msi(adapter->pdev))) {
423 "Unable to allocate MSI interrupt Error: %d\n", err);
424 adapter->have_msi = FALSE;
428 if((err = request_irq(adapter->pdev->irq, &e1000_intr,
429 SA_SHIRQ | SA_SAMPLE_RANDOM,
430 netdev->name, netdev))) {
432 "Unable to allocate interrupt Error: %d\n", err);
436 mod_timer(&adapter->watchdog_timer, jiffies);
438 #ifdef CONFIG_E1000_NAPI
439 netif_poll_enable(netdev);
441 e1000_irq_enable(adapter);
447 e1000_down(struct e1000_adapter *adapter)
449 struct net_device *netdev = adapter->netdev;
450 boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) &&
451 e1000_check_mng_mode(&adapter->hw);
453 e1000_irq_disable(adapter);
454 #ifdef CONFIG_E1000_MQ
455 while (atomic_read(&adapter->rx_sched_call_data.count) != 0);
457 free_irq(adapter->pdev->irq, netdev);
458 #ifdef CONFIG_PCI_MSI
459 if(adapter->hw.mac_type > e1000_82547_rev_2 &&
460 adapter->have_msi == TRUE)
461 pci_disable_msi(adapter->pdev);
463 del_timer_sync(&adapter->tx_fifo_stall_timer);
464 del_timer_sync(&adapter->watchdog_timer);
465 del_timer_sync(&adapter->phy_info_timer);
467 #ifdef CONFIG_E1000_NAPI
468 netif_poll_disable(netdev);
470 adapter->link_speed = 0;
471 adapter->link_duplex = 0;
472 netif_carrier_off(netdev);
473 netif_stop_queue(netdev);
475 e1000_reset(adapter);
476 e1000_clean_all_tx_rings(adapter);
477 e1000_clean_all_rx_rings(adapter);
479 /* Power down the PHY so no link is implied when interface is down *
480 * The PHY cannot be powered down if any of the following is TRUE *
483 * (c) SoL/IDER session is active */
484 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&
485 adapter->hw.media_type == e1000_media_type_copper &&
486 !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) &&
488 !e1000_check_phy_reset_block(&adapter->hw)) {
490 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
491 mii_reg |= MII_CR_POWER_DOWN;
492 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
498 e1000_reset(struct e1000_adapter *adapter)
500 struct net_device *netdev = adapter->netdev;
502 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
503 uint16_t fc_low_water_mark = E1000_FC_LOW_DIFF;
505 /* Repartition Pba for greater than 9k mtu
506 * To take effect CTRL.RST is required.
509 switch (adapter->hw.mac_type) {
511 case e1000_82547_rev_2:
526 if((adapter->hw.mac_type != e1000_82573) &&
527 (adapter->netdev->mtu > E1000_RXBUFFER_8192)) {
528 pba -= 8; /* allocate more FIFO for Tx */
529 /* send an XOFF when there is enough space in the
530 * Rx FIFO to hold one extra full size Rx packet
532 fc_high_water_mark = netdev->mtu + ENET_HEADER_SIZE +
533 ETHERNET_FCS_SIZE + 1;
534 fc_low_water_mark = fc_high_water_mark + 8;
538 if(adapter->hw.mac_type == e1000_82547) {
539 adapter->tx_fifo_head = 0;
540 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
541 adapter->tx_fifo_size =
542 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
543 atomic_set(&adapter->tx_fifo_stall, 0);
546 E1000_WRITE_REG(&adapter->hw, PBA, pba);
548 /* flow control settings */
549 adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) -
551 adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) -
553 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
554 adapter->hw.fc_send_xon = 1;
555 adapter->hw.fc = adapter->hw.original_fc;
557 /* Allow time for pending master requests to run */
558 e1000_reset_hw(&adapter->hw);
559 if(adapter->hw.mac_type >= e1000_82544)
560 E1000_WRITE_REG(&adapter->hw, WUC, 0);
561 if(e1000_init_hw(&adapter->hw))
562 DPRINTK(PROBE, ERR, "Hardware Error\n");
563 e1000_update_mng_vlan(adapter);
564 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
565 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
567 e1000_reset_adaptive(&adapter->hw);
568 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
569 if (adapter->en_mng_pt) {
570 manc = E1000_READ_REG(&adapter->hw, MANC);
571 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
572 E1000_WRITE_REG(&adapter->hw, MANC, manc);
577 * e1000_probe - Device Initialization Routine
578 * @pdev: PCI device information struct
579 * @ent: entry in e1000_pci_tbl
581 * Returns 0 on success, negative on failure
583 * e1000_probe initializes an adapter identified by a pci_dev structure.
584 * The OS initialization, configuring of the adapter private structure,
585 * and a hardware reset occur.
589 e1000_probe(struct pci_dev *pdev,
590 const struct pci_device_id *ent)
592 struct net_device *netdev;
593 struct e1000_adapter *adapter;
594 unsigned long mmio_start, mmio_len;
596 static int cards_found = 0;
597 int i, err, pci_using_dac;
598 uint16_t eeprom_data;
599 uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
600 if((err = pci_enable_device(pdev)))
603 if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
606 if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
607 E1000_ERR("No usable DMA configuration, aborting\n");
613 if((err = pci_request_regions(pdev, e1000_driver_name)))
616 pci_set_master(pdev);
618 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
621 goto err_alloc_etherdev;
624 SET_MODULE_OWNER(netdev);
625 SET_NETDEV_DEV(netdev, &pdev->dev);
627 pci_set_drvdata(pdev, netdev);
628 adapter = netdev_priv(netdev);
629 adapter->netdev = netdev;
630 adapter->pdev = pdev;
631 adapter->hw.back = adapter;
632 adapter->msg_enable = (1 << debug) - 1;
634 mmio_start = pci_resource_start(pdev, BAR_0);
635 mmio_len = pci_resource_len(pdev, BAR_0);
637 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
638 if(!adapter->hw.hw_addr) {
643 for(i = BAR_1; i <= BAR_5; i++) {
644 if(pci_resource_len(pdev, i) == 0)
646 if(pci_resource_flags(pdev, i) & IORESOURCE_IO) {
647 adapter->hw.io_base = pci_resource_start(pdev, i);
652 netdev->open = &e1000_open;
653 netdev->stop = &e1000_close;
654 netdev->hard_start_xmit = &e1000_xmit_frame;
655 netdev->get_stats = &e1000_get_stats;
656 netdev->set_multicast_list = &e1000_set_multi;
657 netdev->set_mac_address = &e1000_set_mac;
658 netdev->change_mtu = &e1000_change_mtu;
659 netdev->do_ioctl = &e1000_ioctl;
660 e1000_set_ethtool_ops(netdev);
661 netdev->tx_timeout = &e1000_tx_timeout;
662 netdev->watchdog_timeo = 5 * HZ;
663 #ifdef CONFIG_E1000_NAPI
664 netdev->poll = &e1000_clean;
667 netdev->vlan_rx_register = e1000_vlan_rx_register;
668 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
669 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
670 #ifdef CONFIG_NET_POLL_CONTROLLER
671 netdev->poll_controller = e1000_netpoll;
673 strcpy(netdev->name, pci_name(pdev));
675 netdev->mem_start = mmio_start;
676 netdev->mem_end = mmio_start + mmio_len;
677 netdev->base_addr = adapter->hw.io_base;
679 adapter->bd_number = cards_found;
681 /* setup the private structure */
683 if((err = e1000_sw_init(adapter)))
686 if((err = e1000_check_phy_reset_block(&adapter->hw)))
687 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
689 if(adapter->hw.mac_type >= e1000_82543) {
690 netdev->features = NETIF_F_SG |
694 NETIF_F_HW_VLAN_FILTER;
698 if((adapter->hw.mac_type >= e1000_82544) &&
699 (adapter->hw.mac_type != e1000_82547))
700 netdev->features |= NETIF_F_TSO;
702 #ifdef NETIF_F_TSO_IPV6
703 if(adapter->hw.mac_type > e1000_82547_rev_2)
704 netdev->features |= NETIF_F_TSO_IPV6;
708 netdev->features |= NETIF_F_HIGHDMA;
710 /* hard_start_xmit is safe against parallel locking */
711 netdev->features |= NETIF_F_LLTX;
713 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
715 /* before reading the EEPROM, reset the controller to
716 * put the device in a known good starting state */
718 e1000_reset_hw(&adapter->hw);
720 /* make sure the EEPROM is good */
722 if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
723 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
728 /* copy the MAC address out of the EEPROM */
730 if(e1000_read_mac_addr(&adapter->hw))
731 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
732 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
733 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
735 if(!is_valid_ether_addr(netdev->perm_addr)) {
736 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
741 e1000_read_part_num(&adapter->hw, &(adapter->part_num));
743 e1000_get_bus_info(&adapter->hw);
745 init_timer(&adapter->tx_fifo_stall_timer);
746 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
747 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
749 init_timer(&adapter->watchdog_timer);
750 adapter->watchdog_timer.function = &e1000_watchdog;
751 adapter->watchdog_timer.data = (unsigned long) adapter;
753 INIT_WORK(&adapter->watchdog_task,
754 (void (*)(void *))e1000_watchdog_task, adapter);
756 init_timer(&adapter->phy_info_timer);
757 adapter->phy_info_timer.function = &e1000_update_phy_info;
758 adapter->phy_info_timer.data = (unsigned long) adapter;
760 INIT_WORK(&adapter->tx_timeout_task,
761 (void (*)(void *))e1000_tx_timeout_task, netdev);
763 /* we're going to reset, so assume we have no link for now */
765 netif_carrier_off(netdev);
766 netif_stop_queue(netdev);
768 e1000_check_options(adapter);
770 /* Initial Wake on LAN setting
771 * If APM wake is enabled in the EEPROM,
772 * enable the ACPI Magic Packet filter
775 switch(adapter->hw.mac_type) {
776 case e1000_82542_rev2_0:
777 case e1000_82542_rev2_1:
781 e1000_read_eeprom(&adapter->hw,
782 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
783 eeprom_apme_mask = E1000_EEPROM_82544_APM;
786 case e1000_82546_rev_3:
788 if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
789 && (adapter->hw.media_type == e1000_media_type_copper)) {
790 e1000_read_eeprom(&adapter->hw,
791 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
796 e1000_read_eeprom(&adapter->hw,
797 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
800 if(eeprom_data & eeprom_apme_mask)
801 adapter->wol |= E1000_WUFC_MAG;
803 /* reset the hardware with the new settings */
804 e1000_reset(adapter);
806 /* If the controller is 82573 and f/w is AMT, do not set
807 * DRV_LOAD until the interface is up. For all other cases,
808 * let the f/w know that the h/w is now under the control
810 if (adapter->hw.mac_type != e1000_82573 ||
811 !e1000_check_mng_mode(&adapter->hw))
812 e1000_get_hw_control(adapter);
814 strcpy(netdev->name, "eth%d");
815 if((err = register_netdev(netdev)))
818 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
826 iounmap(adapter->hw.hw_addr);
830 pci_release_regions(pdev);
835 * e1000_remove - Device Removal Routine
836 * @pdev: PCI device information struct
838 * e1000_remove is called by the PCI subsystem to alert the driver
839 * that it should release a PCI device. The could be caused by a
840 * Hot-Plug event, or because the driver is going to be removed from
844 static void __devexit
845 e1000_remove(struct pci_dev *pdev)
847 struct net_device *netdev = pci_get_drvdata(pdev);
848 struct e1000_adapter *adapter = netdev_priv(netdev);
850 #ifdef CONFIG_E1000_NAPI
854 flush_scheduled_work();
856 if(adapter->hw.mac_type >= e1000_82540 &&
857 adapter->hw.media_type == e1000_media_type_copper) {
858 manc = E1000_READ_REG(&adapter->hw, MANC);
859 if(manc & E1000_MANC_SMBUS_EN) {
860 manc |= E1000_MANC_ARP_EN;
861 E1000_WRITE_REG(&adapter->hw, MANC, manc);
865 /* Release control of h/w to f/w. If f/w is AMT enabled, this
866 * would have already happened in close and is redundant. */
867 e1000_release_hw_control(adapter);
869 unregister_netdev(netdev);
870 #ifdef CONFIG_E1000_NAPI
871 for (i = 0; i < adapter->num_rx_queues; i++)
872 __dev_put(&adapter->polling_netdev[i]);
875 if(!e1000_check_phy_reset_block(&adapter->hw))
876 e1000_phy_hw_reset(&adapter->hw);
878 kfree(adapter->tx_ring);
879 kfree(adapter->rx_ring);
880 #ifdef CONFIG_E1000_NAPI
881 kfree(adapter->polling_netdev);
884 iounmap(adapter->hw.hw_addr);
885 pci_release_regions(pdev);
887 #ifdef CONFIG_E1000_MQ
888 free_percpu(adapter->cpu_netdev);
889 free_percpu(adapter->cpu_tx_ring);
893 pci_disable_device(pdev);
897 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
898 * @adapter: board private structure to initialize
900 * e1000_sw_init initializes the Adapter private data structure.
901 * Fields are initialized based on PCI device information and
902 * OS network device settings (MTU size).
906 e1000_sw_init(struct e1000_adapter *adapter)
908 struct e1000_hw *hw = &adapter->hw;
909 struct net_device *netdev = adapter->netdev;
910 struct pci_dev *pdev = adapter->pdev;
911 #ifdef CONFIG_E1000_NAPI
915 /* PCI config space info */
917 hw->vendor_id = pdev->vendor;
918 hw->device_id = pdev->device;
919 hw->subsystem_vendor_id = pdev->subsystem_vendor;
920 hw->subsystem_id = pdev->subsystem_device;
922 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
924 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
926 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
927 adapter->rx_ps_bsize0 = E1000_RXBUFFER_256;
928 hw->max_frame_size = netdev->mtu +
929 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
930 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
932 /* identify the MAC */
934 if(e1000_set_mac_type(hw)) {
935 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
939 /* initialize eeprom parameters */
941 if(e1000_init_eeprom_params(hw)) {
942 E1000_ERR("EEPROM initialization failed\n");
946 switch(hw->mac_type) {
951 case e1000_82541_rev_2:
952 case e1000_82547_rev_2:
953 hw->phy_init_script = 1;
957 e1000_set_media_type(hw);
959 hw->wait_autoneg_complete = FALSE;
960 hw->tbi_compatibility_en = TRUE;
961 hw->adaptive_ifs = TRUE;
965 if(hw->media_type == e1000_media_type_copper) {
966 hw->mdix = AUTO_ALL_MODES;
967 hw->disable_polarity_correction = FALSE;
968 hw->master_slave = E1000_MASTER_SLAVE;
971 #ifdef CONFIG_E1000_MQ
972 /* Number of supported queues */
973 switch (hw->mac_type) {
976 /* These controllers support 2 tx queues, but with a single
977 * qdisc implementation, multiple tx queues aren't quite as
978 * interesting. If we can find a logical way of mapping
979 * flows to a queue, then perhaps we can up the num_tx_queue
980 * count back to its default. Until then, we run the risk of
981 * terrible performance due to SACK overload. */
982 adapter->num_tx_queues = 1;
983 adapter->num_rx_queues = 2;
986 adapter->num_tx_queues = 1;
987 adapter->num_rx_queues = 1;
990 adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus());
991 adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus());
993 adapter->num_tx_queues = 1;
994 adapter->num_rx_queues = 1;
997 if (e1000_alloc_queues(adapter)) {
998 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1002 #ifdef CONFIG_E1000_NAPI
1003 for (i = 0; i < adapter->num_rx_queues; i++) {
1004 adapter->polling_netdev[i].priv = adapter;
1005 adapter->polling_netdev[i].poll = &e1000_clean;
1006 adapter->polling_netdev[i].weight = 64;
1007 dev_hold(&adapter->polling_netdev[i]);
1008 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
1012 #ifdef CONFIG_E1000_MQ
1013 e1000_setup_queue_mapping(adapter);
1016 atomic_set(&adapter->irq_sem, 1);
1017 spin_lock_init(&adapter->stats_lock);
1023 * e1000_alloc_queues - Allocate memory for all rings
1024 * @adapter: board private structure to initialize
1026 * We allocate one ring per queue at run-time since we don't know the
1027 * number of queues at compile-time. The polling_netdev array is
1028 * intended for Multiqueue, but should work fine with a single queue.
1031 static int __devinit
1032 e1000_alloc_queues(struct e1000_adapter *adapter)
1036 size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues;
1037 adapter->tx_ring = kmalloc(size, GFP_KERNEL);
1038 if (!adapter->tx_ring)
1040 memset(adapter->tx_ring, 0, size);
1042 size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues;
1043 adapter->rx_ring = kmalloc(size, GFP_KERNEL);
1044 if (!adapter->rx_ring) {
1045 kfree(adapter->tx_ring);
1048 memset(adapter->rx_ring, 0, size);
1050 #ifdef CONFIG_E1000_NAPI
1051 size = sizeof(struct net_device) * adapter->num_rx_queues;
1052 adapter->polling_netdev = kmalloc(size, GFP_KERNEL);
1053 if (!adapter->polling_netdev) {
1054 kfree(adapter->tx_ring);
1055 kfree(adapter->rx_ring);
1058 memset(adapter->polling_netdev, 0, size);
1061 return E1000_SUCCESS;
1064 #ifdef CONFIG_E1000_MQ
1065 static void __devinit
1066 e1000_setup_queue_mapping(struct e1000_adapter *adapter)
1070 adapter->rx_sched_call_data.func = e1000_rx_schedule;
1071 adapter->rx_sched_call_data.info = adapter->netdev;
1072 cpus_clear(adapter->rx_sched_call_data.cpumask);
1074 adapter->cpu_netdev = alloc_percpu(struct net_device *);
1075 adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *);
1079 for_each_online_cpu(cpu) {
1080 *per_cpu_ptr(adapter->cpu_tx_ring, cpu) = &adapter->tx_ring[i % adapter->num_tx_queues];
1081 /* This is incomplete because we'd like to assign separate
1082 * physical cpus to these netdev polling structures and
1083 * avoid saturating a subset of cpus.
1085 if (i < adapter->num_rx_queues) {
1086 *per_cpu_ptr(adapter->cpu_netdev, cpu) = &adapter->polling_netdev[i];
1087 adapter->cpu_for_queue[i] = cpu;
1089 *per_cpu_ptr(adapter->cpu_netdev, cpu) = NULL;
1093 unlock_cpu_hotplug();
1098 * e1000_open - Called when a network interface is made active
1099 * @netdev: network interface device structure
1101 * Returns 0 on success, negative value on failure
1103 * The open entry point is called when a network interface is made
1104 * active by the system (IFF_UP). At this point all resources needed
1105 * for transmit and receive operations are allocated, the interrupt
1106 * handler is registered with the OS, the watchdog timer is started,
1107 * and the stack is notified that the interface is ready.
1111 e1000_open(struct net_device *netdev)
1113 struct e1000_adapter *adapter = netdev_priv(netdev);
1116 /* allocate transmit descriptors */
1118 if ((err = e1000_setup_all_tx_resources(adapter)))
1121 /* allocate receive descriptors */
1123 if ((err = e1000_setup_all_rx_resources(adapter)))
1126 if((err = e1000_up(adapter)))
1128 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1129 if((adapter->hw.mng_cookie.status &
1130 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1131 e1000_update_mng_vlan(adapter);
1134 /* If AMT is enabled, let the firmware know that the network
1135 * interface is now open */
1136 if (adapter->hw.mac_type == e1000_82573 &&
1137 e1000_check_mng_mode(&adapter->hw))
1138 e1000_get_hw_control(adapter);
1140 return E1000_SUCCESS;
1143 e1000_free_all_rx_resources(adapter);
1145 e1000_free_all_tx_resources(adapter);
1147 e1000_reset(adapter);
1153 * e1000_close - Disables a network interface
1154 * @netdev: network interface device structure
1156 * Returns 0, this is not allowed to fail
1158 * The close entry point is called when an interface is de-activated
1159 * by the OS. The hardware is still under the drivers control, but
1160 * needs to be disabled. A global MAC reset is issued to stop the
1161 * hardware, and all transmit and receive resources are freed.
1165 e1000_close(struct net_device *netdev)
1167 struct e1000_adapter *adapter = netdev_priv(netdev);
1169 e1000_down(adapter);
1171 e1000_free_all_tx_resources(adapter);
1172 e1000_free_all_rx_resources(adapter);
1174 if((adapter->hw.mng_cookie.status &
1175 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1176 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1179 /* If AMT is enabled, let the firmware know that the network
1180 * interface is now closed */
1181 if (adapter->hw.mac_type == e1000_82573 &&
1182 e1000_check_mng_mode(&adapter->hw))
1183 e1000_release_hw_control(adapter);
1189 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1190 * @adapter: address of board private structure
1191 * @start: address of beginning of memory
1192 * @len: length of memory
1194 static inline boolean_t
1195 e1000_check_64k_bound(struct e1000_adapter *adapter,
1196 void *start, unsigned long len)
1198 unsigned long begin = (unsigned long) start;
1199 unsigned long end = begin + len;
1201 /* First rev 82545 and 82546 need to not allow any memory
1202 * write location to cross 64k boundary due to errata 23 */
1203 if (adapter->hw.mac_type == e1000_82545 ||
1204 adapter->hw.mac_type == e1000_82546) {
1205 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
1212 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1213 * @adapter: board private structure
1214 * @txdr: tx descriptor ring (for a specific queue) to setup
1216 * Return 0 on success, negative on failure
1220 e1000_setup_tx_resources(struct e1000_adapter *adapter,
1221 struct e1000_tx_ring *txdr)
1223 struct pci_dev *pdev = adapter->pdev;
1226 size = sizeof(struct e1000_buffer) * txdr->count;
1228 txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus));
1229 if(!txdr->buffer_info) {
1231 "Unable to allocate memory for the transmit descriptor ring\n");
1234 memset(txdr->buffer_info, 0, size);
1236 /* round up to nearest 4K */
1238 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1239 E1000_ROUNDUP(txdr->size, 4096);
1241 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1244 vfree(txdr->buffer_info);
1246 "Unable to allocate memory for the transmit descriptor ring\n");
1250 /* Fix for errata 23, can't cross 64kB boundary */
1251 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1252 void *olddesc = txdr->desc;
1253 dma_addr_t olddma = txdr->dma;
1254 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1255 "at %p\n", txdr->size, txdr->desc);
1256 /* Try again, without freeing the previous */
1257 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1259 /* Failed allocation, critical failure */
1260 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1261 goto setup_tx_desc_die;
1264 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1266 pci_free_consistent(pdev, txdr->size, txdr->desc,
1268 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1270 "Unable to allocate aligned memory "
1271 "for the transmit descriptor ring\n");
1272 vfree(txdr->buffer_info);
1275 /* Free old allocation, new allocation was successful */
1276 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1279 memset(txdr->desc, 0, txdr->size);
1281 txdr->next_to_use = 0;
1282 txdr->next_to_clean = 0;
1283 spin_lock_init(&txdr->tx_lock);
1289 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1290 * (Descriptors) for all queues
1291 * @adapter: board private structure
1293 * If this function returns with an error, then it's possible one or
1294 * more of the rings is populated (while the rest are not). It is the
1295 * callers duty to clean those orphaned rings.
1297 * Return 0 on success, negative on failure
1301 e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1305 for (i = 0; i < adapter->num_tx_queues; i++) {
1306 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1309 "Allocation for Tx Queue %u failed\n", i);
1318 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1319 * @adapter: board private structure
1321 * Configure the Tx unit of the MAC after a reset.
1325 e1000_configure_tx(struct e1000_adapter *adapter)
1328 struct e1000_hw *hw = &adapter->hw;
1329 uint32_t tdlen, tctl, tipg, tarc;
1331 /* Setup the HW Tx Head and Tail descriptor pointers */
1333 switch (adapter->num_tx_queues) {
1335 tdba = adapter->tx_ring[1].dma;
1336 tdlen = adapter->tx_ring[1].count *
1337 sizeof(struct e1000_tx_desc);
1338 E1000_WRITE_REG(hw, TDBAL1, (tdba & 0x00000000ffffffffULL));
1339 E1000_WRITE_REG(hw, TDBAH1, (tdba >> 32));
1340 E1000_WRITE_REG(hw, TDLEN1, tdlen);
1341 E1000_WRITE_REG(hw, TDH1, 0);
1342 E1000_WRITE_REG(hw, TDT1, 0);
1343 adapter->tx_ring[1].tdh = E1000_TDH1;
1344 adapter->tx_ring[1].tdt = E1000_TDT1;
1348 tdba = adapter->tx_ring[0].dma;
1349 tdlen = adapter->tx_ring[0].count *
1350 sizeof(struct e1000_tx_desc);
1351 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
1352 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32));
1353 E1000_WRITE_REG(hw, TDLEN, tdlen);
1354 E1000_WRITE_REG(hw, TDH, 0);
1355 E1000_WRITE_REG(hw, TDT, 0);
1356 adapter->tx_ring[0].tdh = E1000_TDH;
1357 adapter->tx_ring[0].tdt = E1000_TDT;
1361 /* Set the default values for the Tx Inter Packet Gap timer */
1363 switch (hw->mac_type) {
1364 case e1000_82542_rev2_0:
1365 case e1000_82542_rev2_1:
1366 tipg = DEFAULT_82542_TIPG_IPGT;
1367 tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
1368 tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
1371 if (hw->media_type == e1000_media_type_fiber ||
1372 hw->media_type == e1000_media_type_internal_serdes)
1373 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1375 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1376 tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT;
1377 tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT;
1379 E1000_WRITE_REG(hw, TIPG, tipg);
1381 /* Set the Tx Interrupt Delay register */
1383 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
1384 if (hw->mac_type >= e1000_82540)
1385 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay);
1387 /* Program the Transmit Control Register */
1389 tctl = E1000_READ_REG(hw, TCTL);
1391 tctl &= ~E1000_TCTL_CT;
1392 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | E1000_TCTL_RTLC |
1393 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1395 E1000_WRITE_REG(hw, TCTL, tctl);
1397 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1398 tarc = E1000_READ_REG(hw, TARC0);
1399 tarc |= ((1 << 25) | (1 << 21));
1400 E1000_WRITE_REG(hw, TARC0, tarc);
1401 tarc = E1000_READ_REG(hw, TARC1);
1403 if (tctl & E1000_TCTL_MULR)
1407 E1000_WRITE_REG(hw, TARC1, tarc);
1410 e1000_config_collision_dist(hw);
1412 /* Setup Transmit Descriptor Settings for eop descriptor */
1413 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
1416 if (hw->mac_type < e1000_82543)
1417 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1419 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1421 /* Cache if we're 82544 running in PCI-X because we'll
1422 * need this to apply a workaround later in the send path. */
1423 if (hw->mac_type == e1000_82544 &&
1424 hw->bus_type == e1000_bus_type_pcix)
1425 adapter->pcix_82544 = 1;
1429 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1430 * @adapter: board private structure
1431 * @rxdr: rx descriptor ring (for a specific queue) to setup
1433 * Returns 0 on success, negative on failure
1437 e1000_setup_rx_resources(struct e1000_adapter *adapter,
1438 struct e1000_rx_ring *rxdr)
1440 struct pci_dev *pdev = adapter->pdev;
1443 size = sizeof(struct e1000_buffer) * rxdr->count;
1444 rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus));
1445 if (!rxdr->buffer_info) {
1447 "Unable to allocate memory for the receive descriptor ring\n");
1450 memset(rxdr->buffer_info, 0, size);
1452 size = sizeof(struct e1000_ps_page) * rxdr->count;
1453 rxdr->ps_page = kmalloc(size, GFP_KERNEL);
1454 if(!rxdr->ps_page) {
1455 vfree(rxdr->buffer_info);
1457 "Unable to allocate memory for the receive descriptor ring\n");
1460 memset(rxdr->ps_page, 0, size);
1462 size = sizeof(struct e1000_ps_page_dma) * rxdr->count;
1463 rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL);
1464 if(!rxdr->ps_page_dma) {
1465 vfree(rxdr->buffer_info);
1466 kfree(rxdr->ps_page);
1468 "Unable to allocate memory for the receive descriptor ring\n");
1471 memset(rxdr->ps_page_dma, 0, size);
1473 if(adapter->hw.mac_type <= e1000_82547_rev_2)
1474 desc_len = sizeof(struct e1000_rx_desc);
1476 desc_len = sizeof(union e1000_rx_desc_packet_split);
1478 /* Round up to nearest 4K */
1480 rxdr->size = rxdr->count * desc_len;
1481 E1000_ROUNDUP(rxdr->size, 4096);
1483 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1487 "Unable to allocate memory for the receive descriptor ring\n");
1489 vfree(rxdr->buffer_info);
1490 kfree(rxdr->ps_page);
1491 kfree(rxdr->ps_page_dma);
1495 /* Fix for errata 23, can't cross 64kB boundary */
1496 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1497 void *olddesc = rxdr->desc;
1498 dma_addr_t olddma = rxdr->dma;
1499 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1500 "at %p\n", rxdr->size, rxdr->desc);
1501 /* Try again, without freeing the previous */
1502 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1503 /* Failed allocation, critical failure */
1505 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1507 "Unable to allocate memory "
1508 "for the receive descriptor ring\n");
1509 goto setup_rx_desc_die;
1512 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1514 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1516 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1518 "Unable to allocate aligned memory "
1519 "for the receive descriptor ring\n");
1520 goto setup_rx_desc_die;
1522 /* Free old allocation, new allocation was successful */
1523 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1526 memset(rxdr->desc, 0, rxdr->size);
1528 rxdr->next_to_clean = 0;
1529 rxdr->next_to_use = 0;
1535 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1536 * (Descriptors) for all queues
1537 * @adapter: board private structure
1539 * If this function returns with an error, then it's possible one or
1540 * more of the rings is populated (while the rest are not). It is the
1541 * callers duty to clean those orphaned rings.
1543 * Return 0 on success, negative on failure
1547 e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1551 for (i = 0; i < adapter->num_rx_queues; i++) {
1552 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1555 "Allocation for Rx Queue %u failed\n", i);
1564 * e1000_setup_rctl - configure the receive control registers
1565 * @adapter: Board private structure
1567 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1568 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1570 e1000_setup_rctl(struct e1000_adapter *adapter)
1572 uint32_t rctl, rfctl;
1573 uint32_t psrctl = 0;
1574 #ifdef CONFIG_E1000_PACKET_SPLIT
1578 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1580 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1582 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1583 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1584 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
1586 if(adapter->hw.tbi_compatibility_on == 1)
1587 rctl |= E1000_RCTL_SBP;
1589 rctl &= ~E1000_RCTL_SBP;
1591 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1592 rctl &= ~E1000_RCTL_LPE;
1594 rctl |= E1000_RCTL_LPE;
1596 /* Setup buffer sizes */
1597 if(adapter->hw.mac_type >= e1000_82571) {
1598 /* We can now specify buffers in 1K increments.
1599 * BSIZE and BSEX are ignored in this case. */
1600 rctl |= adapter->rx_buffer_len << 0x11;
1602 rctl &= ~E1000_RCTL_SZ_4096;
1603 rctl |= E1000_RCTL_BSEX;
1604 switch (adapter->rx_buffer_len) {
1605 case E1000_RXBUFFER_2048:
1607 rctl |= E1000_RCTL_SZ_2048;
1608 rctl &= ~E1000_RCTL_BSEX;
1610 case E1000_RXBUFFER_4096:
1611 rctl |= E1000_RCTL_SZ_4096;
1613 case E1000_RXBUFFER_8192:
1614 rctl |= E1000_RCTL_SZ_8192;
1616 case E1000_RXBUFFER_16384:
1617 rctl |= E1000_RCTL_SZ_16384;
1622 #ifdef CONFIG_E1000_PACKET_SPLIT
1623 /* 82571 and greater support packet-split where the protocol
1624 * header is placed in skb->data and the packet data is
1625 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1626 * In the case of a non-split, skb->data is linearly filled,
1627 * followed by the page buffers. Therefore, skb->data is
1628 * sized to hold the largest protocol header.
1630 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1631 if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) &&
1633 adapter->rx_ps_pages = pages;
1635 adapter->rx_ps_pages = 0;
1637 if (adapter->rx_ps_pages) {
1638 /* Configure extra packet-split registers */
1639 rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
1640 rfctl |= E1000_RFCTL_EXTEN;
1641 /* disable IPv6 packet split support */
1642 rfctl |= E1000_RFCTL_IPV6_DIS;
1643 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
1645 rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC;
1647 psrctl |= adapter->rx_ps_bsize0 >>
1648 E1000_PSRCTL_BSIZE0_SHIFT;
1650 switch (adapter->rx_ps_pages) {
1652 psrctl |= PAGE_SIZE <<
1653 E1000_PSRCTL_BSIZE3_SHIFT;
1655 psrctl |= PAGE_SIZE <<
1656 E1000_PSRCTL_BSIZE2_SHIFT;
1658 psrctl |= PAGE_SIZE >>
1659 E1000_PSRCTL_BSIZE1_SHIFT;
1663 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl);
1666 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1670 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1671 * @adapter: board private structure
1673 * Configure the Rx unit of the MAC after a reset.
1677 e1000_configure_rx(struct e1000_adapter *adapter)
1680 struct e1000_hw *hw = &adapter->hw;
1681 uint32_t rdlen, rctl, rxcsum, ctrl_ext;
1682 #ifdef CONFIG_E1000_MQ
1683 uint32_t reta, mrqc;
1687 if (adapter->rx_ps_pages) {
1688 rdlen = adapter->rx_ring[0].count *
1689 sizeof(union e1000_rx_desc_packet_split);
1690 adapter->clean_rx = e1000_clean_rx_irq_ps;
1691 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
1693 rdlen = adapter->rx_ring[0].count *
1694 sizeof(struct e1000_rx_desc);
1695 adapter->clean_rx = e1000_clean_rx_irq;
1696 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1699 /* disable receives while setting up the descriptors */
1700 rctl = E1000_READ_REG(hw, RCTL);
1701 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
1703 /* set the Receive Delay Timer Register */
1704 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
1706 if (hw->mac_type >= e1000_82540) {
1707 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay);
1708 if(adapter->itr > 1)
1709 E1000_WRITE_REG(hw, ITR,
1710 1000000000 / (adapter->itr * 256));
1713 if (hw->mac_type >= e1000_82571) {
1714 /* Reset delay timers after every interrupt */
1715 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1716 ctrl_ext |= E1000_CTRL_EXT_CANC;
1717 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1718 E1000_WRITE_FLUSH(hw);
1721 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1722 * the Base and Length of the Rx Descriptor Ring */
1723 switch (adapter->num_rx_queues) {
1724 #ifdef CONFIG_E1000_MQ
1726 rdba = adapter->rx_ring[1].dma;
1727 E1000_WRITE_REG(hw, RDBAL1, (rdba & 0x00000000ffffffffULL));
1728 E1000_WRITE_REG(hw, RDBAH1, (rdba >> 32));
1729 E1000_WRITE_REG(hw, RDLEN1, rdlen);
1730 E1000_WRITE_REG(hw, RDH1, 0);
1731 E1000_WRITE_REG(hw, RDT1, 0);
1732 adapter->rx_ring[1].rdh = E1000_RDH1;
1733 adapter->rx_ring[1].rdt = E1000_RDT1;
1738 rdba = adapter->rx_ring[0].dma;
1739 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1740 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32));
1741 E1000_WRITE_REG(hw, RDLEN, rdlen);
1742 E1000_WRITE_REG(hw, RDH, 0);
1743 E1000_WRITE_REG(hw, RDT, 0);
1744 adapter->rx_ring[0].rdh = E1000_RDH;
1745 adapter->rx_ring[0].rdt = E1000_RDT;
1749 #ifdef CONFIG_E1000_MQ
1750 if (adapter->num_rx_queues > 1) {
1751 uint32_t random[10];
1753 get_random_bytes(&random[0], 40);
1755 if (hw->mac_type <= e1000_82572) {
1756 E1000_WRITE_REG(hw, RSSIR, 0);
1757 E1000_WRITE_REG(hw, RSSIM, 0);
1760 switch (adapter->num_rx_queues) {
1764 mrqc = E1000_MRQC_ENABLE_RSS_2Q;
1768 /* Fill out redirection table */
1769 for (i = 0; i < 32; i++)
1770 E1000_WRITE_REG_ARRAY(hw, RETA, i, reta);
1771 /* Fill out hash function seeds */
1772 for (i = 0; i < 10; i++)
1773 E1000_WRITE_REG_ARRAY(hw, RSSRK, i, random[i]);
1775 mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 |
1776 E1000_MRQC_RSS_FIELD_IPV4_TCP);
1777 E1000_WRITE_REG(hw, MRQC, mrqc);
1780 /* Multiqueue and packet checksumming are mutually exclusive. */
1781 if (hw->mac_type >= e1000_82571) {
1782 rxcsum = E1000_READ_REG(hw, RXCSUM);
1783 rxcsum |= E1000_RXCSUM_PCSD;
1784 E1000_WRITE_REG(hw, RXCSUM, rxcsum);
1789 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1790 if (hw->mac_type >= e1000_82543) {
1791 rxcsum = E1000_READ_REG(hw, RXCSUM);
1792 if(adapter->rx_csum == TRUE) {
1793 rxcsum |= E1000_RXCSUM_TUOFL;
1795 /* Enable 82571 IPv4 payload checksum for UDP fragments
1796 * Must be used in conjunction with packet-split. */
1797 if ((hw->mac_type >= e1000_82571) &&
1798 (adapter->rx_ps_pages)) {
1799 rxcsum |= E1000_RXCSUM_IPPCSE;
1802 rxcsum &= ~E1000_RXCSUM_TUOFL;
1803 /* don't need to clear IPPCSE as it defaults to 0 */
1805 E1000_WRITE_REG(hw, RXCSUM, rxcsum);
1807 #endif /* CONFIG_E1000_MQ */
1809 if (hw->mac_type == e1000_82573)
1810 E1000_WRITE_REG(hw, ERT, 0x0100);
1812 /* Enable Receives */
1813 E1000_WRITE_REG(hw, RCTL, rctl);
1817 * e1000_free_tx_resources - Free Tx Resources per Queue
1818 * @adapter: board private structure
1819 * @tx_ring: Tx descriptor ring for a specific queue
1821 * Free all transmit software resources
1825 e1000_free_tx_resources(struct e1000_adapter *adapter,
1826 struct e1000_tx_ring *tx_ring)
1828 struct pci_dev *pdev = adapter->pdev;
1830 e1000_clean_tx_ring(adapter, tx_ring);
1832 vfree(tx_ring->buffer_info);
1833 tx_ring->buffer_info = NULL;
1835 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1837 tx_ring->desc = NULL;
1841 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1842 * @adapter: board private structure
1844 * Free all transmit software resources
1848 e1000_free_all_tx_resources(struct e1000_adapter *adapter)
1852 for (i = 0; i < adapter->num_tx_queues; i++)
1853 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1857 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1858 struct e1000_buffer *buffer_info)
1860 if(buffer_info->dma) {
1861 pci_unmap_page(adapter->pdev,
1863 buffer_info->length,
1865 buffer_info->dma = 0;
1867 if(buffer_info->skb) {
1868 dev_kfree_skb_any(buffer_info->skb);
1869 buffer_info->skb = NULL;
1874 * e1000_clean_tx_ring - Free Tx Buffers
1875 * @adapter: board private structure
1876 * @tx_ring: ring to be cleaned
1880 e1000_clean_tx_ring(struct e1000_adapter *adapter,
1881 struct e1000_tx_ring *tx_ring)
1883 struct e1000_buffer *buffer_info;
1887 /* Free all the Tx ring sk_buffs */
1889 for(i = 0; i < tx_ring->count; i++) {
1890 buffer_info = &tx_ring->buffer_info[i];
1891 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
1894 size = sizeof(struct e1000_buffer) * tx_ring->count;
1895 memset(tx_ring->buffer_info, 0, size);
1897 /* Zero out the descriptor ring */
1899 memset(tx_ring->desc, 0, tx_ring->size);
1901 tx_ring->next_to_use = 0;
1902 tx_ring->next_to_clean = 0;
1903 tx_ring->last_tx_tso = 0;
1905 writel(0, adapter->hw.hw_addr + tx_ring->tdh);
1906 writel(0, adapter->hw.hw_addr + tx_ring->tdt);
1910 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1911 * @adapter: board private structure
1915 e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
1919 for (i = 0; i < adapter->num_tx_queues; i++)
1920 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1924 * e1000_free_rx_resources - Free Rx Resources
1925 * @adapter: board private structure
1926 * @rx_ring: ring to clean the resources from
1928 * Free all receive software resources
1932 e1000_free_rx_resources(struct e1000_adapter *adapter,
1933 struct e1000_rx_ring *rx_ring)
1935 struct pci_dev *pdev = adapter->pdev;
1937 e1000_clean_rx_ring(adapter, rx_ring);
1939 vfree(rx_ring->buffer_info);
1940 rx_ring->buffer_info = NULL;
1941 kfree(rx_ring->ps_page);
1942 rx_ring->ps_page = NULL;
1943 kfree(rx_ring->ps_page_dma);
1944 rx_ring->ps_page_dma = NULL;
1946 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1948 rx_ring->desc = NULL;
1952 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1953 * @adapter: board private structure
1955 * Free all receive software resources
1959 e1000_free_all_rx_resources(struct e1000_adapter *adapter)
1963 for (i = 0; i < adapter->num_rx_queues; i++)
1964 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
1968 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1969 * @adapter: board private structure
1970 * @rx_ring: ring to free buffers from
1974 e1000_clean_rx_ring(struct e1000_adapter *adapter,
1975 struct e1000_rx_ring *rx_ring)
1977 struct e1000_buffer *buffer_info;
1978 struct e1000_ps_page *ps_page;
1979 struct e1000_ps_page_dma *ps_page_dma;
1980 struct pci_dev *pdev = adapter->pdev;
1984 /* Free all the Rx ring sk_buffs */
1986 for(i = 0; i < rx_ring->count; i++) {
1987 buffer_info = &rx_ring->buffer_info[i];
1988 if(buffer_info->skb) {
1989 ps_page = &rx_ring->ps_page[i];
1990 ps_page_dma = &rx_ring->ps_page_dma[i];
1991 pci_unmap_single(pdev,
1993 buffer_info->length,
1994 PCI_DMA_FROMDEVICE);
1996 dev_kfree_skb(buffer_info->skb);
1997 buffer_info->skb = NULL;
1999 for(j = 0; j < adapter->rx_ps_pages; j++) {
2000 if(!ps_page->ps_page[j]) break;
2001 pci_unmap_single(pdev,
2002 ps_page_dma->ps_page_dma[j],
2003 PAGE_SIZE, PCI_DMA_FROMDEVICE);
2004 ps_page_dma->ps_page_dma[j] = 0;
2005 put_page(ps_page->ps_page[j]);
2006 ps_page->ps_page[j] = NULL;
2011 size = sizeof(struct e1000_buffer) * rx_ring->count;
2012 memset(rx_ring->buffer_info, 0, size);
2013 size = sizeof(struct e1000_ps_page) * rx_ring->count;
2014 memset(rx_ring->ps_page, 0, size);
2015 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count;
2016 memset(rx_ring->ps_page_dma, 0, size);
2018 /* Zero out the descriptor ring */
2020 memset(rx_ring->desc, 0, rx_ring->size);
2022 rx_ring->next_to_clean = 0;
2023 rx_ring->next_to_use = 0;
2025 writel(0, adapter->hw.hw_addr + rx_ring->rdh);
2026 writel(0, adapter->hw.hw_addr + rx_ring->rdt);
2030 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2031 * @adapter: board private structure
2035 e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2039 for (i = 0; i < adapter->num_rx_queues; i++)
2040 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2043 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2044 * and memory write and invalidate disabled for certain operations
2047 e1000_enter_82542_rst(struct e1000_adapter *adapter)
2049 struct net_device *netdev = adapter->netdev;
2052 e1000_pci_clear_mwi(&adapter->hw);
2054 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2055 rctl |= E1000_RCTL_RST;
2056 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2057 E1000_WRITE_FLUSH(&adapter->hw);
2060 if(netif_running(netdev))
2061 e1000_clean_all_rx_rings(adapter);
2065 e1000_leave_82542_rst(struct e1000_adapter *adapter)
2067 struct net_device *netdev = adapter->netdev;
2070 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2071 rctl &= ~E1000_RCTL_RST;
2072 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2073 E1000_WRITE_FLUSH(&adapter->hw);
2076 if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
2077 e1000_pci_set_mwi(&adapter->hw);
2079 if(netif_running(netdev)) {
2080 e1000_configure_rx(adapter);
2081 e1000_alloc_rx_buffers(adapter, &adapter->rx_ring[0]);
2086 * e1000_set_mac - Change the Ethernet Address of the NIC
2087 * @netdev: network interface device structure
2088 * @p: pointer to an address structure
2090 * Returns 0 on success, negative on failure
2094 e1000_set_mac(struct net_device *netdev, void *p)
2096 struct e1000_adapter *adapter = netdev_priv(netdev);
2097 struct sockaddr *addr = p;
2099 if(!is_valid_ether_addr(addr->sa_data))
2100 return -EADDRNOTAVAIL;
2102 /* 82542 2.0 needs to be in reset to write receive address registers */
2104 if(adapter->hw.mac_type == e1000_82542_rev2_0)
2105 e1000_enter_82542_rst(adapter);
2107 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2108 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
2110 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2112 /* With 82571 controllers, LAA may be overwritten (with the default)
2113 * due to controller reset from the other port. */
2114 if (adapter->hw.mac_type == e1000_82571) {
2115 /* activate the work around */
2116 adapter->hw.laa_is_present = 1;
2118 /* Hold a copy of the LAA in RAR[14] This is done so that
2119 * between the time RAR[0] gets clobbered and the time it
2120 * gets fixed (in e1000_watchdog), the actual LAA is in one
2121 * of the RARs and no incoming packets directed to this port
2122 * are dropped. Eventaully the LAA will be in RAR[0] and
2124 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
2125 E1000_RAR_ENTRIES - 1);
2128 if(adapter->hw.mac_type == e1000_82542_rev2_0)
2129 e1000_leave_82542_rst(adapter);
2135 * e1000_set_multi - Multicast and Promiscuous mode set
2136 * @netdev: network interface device structure
2138 * The set_multi entry point is called whenever the multicast address
2139 * list or the network interface flags are updated. This routine is
2140 * responsible for configuring the hardware for proper multicast,
2141 * promiscuous mode, and all-multi behavior.
2145 e1000_set_multi(struct net_device *netdev)
2147 struct e1000_adapter *adapter = netdev_priv(netdev);
2148 struct e1000_hw *hw = &adapter->hw;
2149 struct dev_mc_list *mc_ptr;
2151 uint32_t hash_value;
2152 int i, rar_entries = E1000_RAR_ENTRIES;
2154 /* reserve RAR[14] for LAA over-write work-around */
2155 if (adapter->hw.mac_type == e1000_82571)
2158 /* Check for Promiscuous and All Multicast modes */
2160 rctl = E1000_READ_REG(hw, RCTL);
2162 if(netdev->flags & IFF_PROMISC) {
2163 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2164 } else if(netdev->flags & IFF_ALLMULTI) {
2165 rctl |= E1000_RCTL_MPE;
2166 rctl &= ~E1000_RCTL_UPE;
2168 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2171 E1000_WRITE_REG(hw, RCTL, rctl);
2173 /* 82542 2.0 needs to be in reset to write receive address registers */
2175 if(hw->mac_type == e1000_82542_rev2_0)
2176 e1000_enter_82542_rst(adapter);
2178 /* load the first 14 multicast address into the exact filters 1-14
2179 * RAR 0 is used for the station MAC adddress
2180 * if there are not 14 addresses, go ahead and clear the filters
2181 * -- with 82571 controllers only 0-13 entries are filled here
2183 mc_ptr = netdev->mc_list;
2185 for(i = 1; i < rar_entries; i++) {
2187 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
2188 mc_ptr = mc_ptr->next;
2190 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2191 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2195 /* clear the old settings from the multicast hash table */
2197 for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
2198 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
2200 /* load any remaining addresses into the hash table */
2202 for(; mc_ptr; mc_ptr = mc_ptr->next) {
2203 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
2204 e1000_mta_set(hw, hash_value);
2207 if(hw->mac_type == e1000_82542_rev2_0)
2208 e1000_leave_82542_rst(adapter);
2211 /* Need to wait a few seconds after link up to get diagnostic information from
2215 e1000_update_phy_info(unsigned long data)
2217 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2218 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
2222 * e1000_82547_tx_fifo_stall - Timer Call-back
2223 * @data: pointer to adapter cast into an unsigned long
2227 e1000_82547_tx_fifo_stall(unsigned long data)
2229 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2230 struct net_device *netdev = adapter->netdev;
2233 if(atomic_read(&adapter->tx_fifo_stall)) {
2234 if((E1000_READ_REG(&adapter->hw, TDT) ==
2235 E1000_READ_REG(&adapter->hw, TDH)) &&
2236 (E1000_READ_REG(&adapter->hw, TDFT) ==
2237 E1000_READ_REG(&adapter->hw, TDFH)) &&
2238 (E1000_READ_REG(&adapter->hw, TDFTS) ==
2239 E1000_READ_REG(&adapter->hw, TDFHS))) {
2240 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2241 E1000_WRITE_REG(&adapter->hw, TCTL,
2242 tctl & ~E1000_TCTL_EN);
2243 E1000_WRITE_REG(&adapter->hw, TDFT,
2244 adapter->tx_head_addr);
2245 E1000_WRITE_REG(&adapter->hw, TDFH,
2246 adapter->tx_head_addr);
2247 E1000_WRITE_REG(&adapter->hw, TDFTS,
2248 adapter->tx_head_addr);
2249 E1000_WRITE_REG(&adapter->hw, TDFHS,
2250 adapter->tx_head_addr);
2251 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2252 E1000_WRITE_FLUSH(&adapter->hw);
2254 adapter->tx_fifo_head = 0;
2255 atomic_set(&adapter->tx_fifo_stall, 0);
2256 netif_wake_queue(netdev);
2258 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2264 * e1000_watchdog - Timer Call-back
2265 * @data: pointer to adapter cast into an unsigned long
2268 e1000_watchdog(unsigned long data)
2270 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2272 /* Do the rest outside of interrupt context */
2273 schedule_work(&adapter->watchdog_task);
2277 e1000_watchdog_task(struct e1000_adapter *adapter)
2279 struct net_device *netdev = adapter->netdev;
2280 struct e1000_tx_ring *txdr = adapter->tx_ring;
2283 e1000_check_for_link(&adapter->hw);
2284 if (adapter->hw.mac_type == e1000_82573) {
2285 e1000_enable_tx_pkt_filtering(&adapter->hw);
2286 if(adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)
2287 e1000_update_mng_vlan(adapter);
2290 if((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2291 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
2292 link = !adapter->hw.serdes_link_down;
2294 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
2297 if(!netif_carrier_ok(netdev)) {
2298 e1000_get_speed_and_duplex(&adapter->hw,
2299 &adapter->link_speed,
2300 &adapter->link_duplex);
2302 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
2303 adapter->link_speed,
2304 adapter->link_duplex == FULL_DUPLEX ?
2305 "Full Duplex" : "Half Duplex");
2307 netif_carrier_on(netdev);
2308 netif_wake_queue(netdev);
2309 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2310 adapter->smartspeed = 0;
2313 if(netif_carrier_ok(netdev)) {
2314 adapter->link_speed = 0;
2315 adapter->link_duplex = 0;
2316 DPRINTK(LINK, INFO, "NIC Link is Down\n");
2317 netif_carrier_off(netdev);
2318 netif_stop_queue(netdev);
2319 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2322 e1000_smartspeed(adapter);
2325 e1000_update_stats(adapter);
2327 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2328 adapter->tpt_old = adapter->stats.tpt;
2329 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
2330 adapter->colc_old = adapter->stats.colc;
2332 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2333 adapter->gorcl_old = adapter->stats.gorcl;
2334 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2335 adapter->gotcl_old = adapter->stats.gotcl;
2337 e1000_update_adaptive(&adapter->hw);
2339 #ifdef CONFIG_E1000_MQ
2340 txdr = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id());
2342 if (!netif_carrier_ok(netdev)) {
2343 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2344 /* We've lost link, so the controller stops DMA,
2345 * but we've got queued Tx work that's never going
2346 * to get done, so reset controller to flush Tx.
2347 * (Do the reset outside of interrupt context). */
2348 schedule_work(&adapter->tx_timeout_task);
2352 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2353 if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
2354 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2355 * asymmetrical Tx or Rx gets ITR=8000; everyone
2356 * else is between 2000-8000. */
2357 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
2358 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
2359 adapter->gotcl - adapter->gorcl :
2360 adapter->gorcl - adapter->gotcl) / 10000;
2361 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
2362 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
2365 /* Cause software interrupt to ensure rx ring is cleaned */
2366 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
2368 /* Force detection of hung controller every watchdog period */
2369 adapter->detect_tx_hung = TRUE;
2371 /* With 82571 controllers, LAA may be overwritten due to controller
2372 * reset from the other port. Set the appropriate LAA in RAR[0] */
2373 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
2374 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2376 /* Reset the timer */
2377 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2380 #define E1000_TX_FLAGS_CSUM 0x00000001
2381 #define E1000_TX_FLAGS_VLAN 0x00000002
2382 #define E1000_TX_FLAGS_TSO 0x00000004
2383 #define E1000_TX_FLAGS_IPV4 0x00000008
2384 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2385 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2388 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2389 struct sk_buff *skb)
2392 struct e1000_context_desc *context_desc;
2393 struct e1000_buffer *buffer_info;
2395 uint32_t cmd_length = 0;
2396 uint16_t ipcse = 0, tucse, mss;
2397 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
2400 if(skb_shinfo(skb)->tso_size) {
2401 if (skb_header_cloned(skb)) {
2402 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2407 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2408 mss = skb_shinfo(skb)->tso_size;
2409 if(skb->protocol == ntohs(ETH_P_IP)) {
2410 skb->nh.iph->tot_len = 0;
2411 skb->nh.iph->check = 0;
2413 ~csum_tcpudp_magic(skb->nh.iph->saddr,
2418 cmd_length = E1000_TXD_CMD_IP;
2419 ipcse = skb->h.raw - skb->data - 1;
2420 #ifdef NETIF_F_TSO_IPV6
2421 } else if(skb->protocol == ntohs(ETH_P_IPV6)) {
2422 skb->nh.ipv6h->payload_len = 0;
2424 ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
2425 &skb->nh.ipv6h->daddr,
2432 ipcss = skb->nh.raw - skb->data;
2433 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
2434 tucss = skb->h.raw - skb->data;
2435 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
2438 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2439 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2441 i = tx_ring->next_to_use;
2442 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2443 buffer_info = &tx_ring->buffer_info[i];
2445 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2446 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2447 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2448 context_desc->upper_setup.tcp_fields.tucss = tucss;
2449 context_desc->upper_setup.tcp_fields.tucso = tucso;
2450 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2451 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2452 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2453 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2455 buffer_info->time_stamp = jiffies;
2457 if (++i == tx_ring->count) i = 0;
2458 tx_ring->next_to_use = i;
2467 static inline boolean_t
2468 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2469 struct sk_buff *skb)
2471 struct e1000_context_desc *context_desc;
2472 struct e1000_buffer *buffer_info;
2476 if(likely(skb->ip_summed == CHECKSUM_HW)) {
2477 css = skb->h.raw - skb->data;
2479 i = tx_ring->next_to_use;
2480 buffer_info = &tx_ring->buffer_info[i];
2481 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2483 context_desc->upper_setup.tcp_fields.tucss = css;
2484 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
2485 context_desc->upper_setup.tcp_fields.tucse = 0;
2486 context_desc->tcp_seg_setup.data = 0;
2487 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
2489 buffer_info->time_stamp = jiffies;
2491 if (unlikely(++i == tx_ring->count)) i = 0;
2492 tx_ring->next_to_use = i;
2500 #define E1000_MAX_TXD_PWR 12
2501 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2504 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2505 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd,
2506 unsigned int nr_frags, unsigned int mss)
2508 struct e1000_buffer *buffer_info;
2509 unsigned int len = skb->len;
2510 unsigned int offset = 0, size, count = 0, i;
2512 len -= skb->data_len;
2514 i = tx_ring->next_to_use;
2517 buffer_info = &tx_ring->buffer_info[i];
2518 size = min(len, max_per_txd);
2520 /* Workaround for Controller erratum --
2521 * descriptor for non-tso packet in a linear SKB that follows a
2522 * tso gets written back prematurely before the data is fully
2523 * DMAd to the controller */
2524 if (!skb->data_len && tx_ring->last_tx_tso &&
2525 !skb_shinfo(skb)->tso_size) {
2526 tx_ring->last_tx_tso = 0;
2530 /* Workaround for premature desc write-backs
2531 * in TSO mode. Append 4-byte sentinel desc */
2532 if(unlikely(mss && !nr_frags && size == len && size > 8))
2535 /* work-around for errata 10 and it applies
2536 * to all controllers in PCI-X mode
2537 * The fix is to make sure that the first descriptor of a
2538 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2540 if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2541 (size > 2015) && count == 0))
2544 /* Workaround for potential 82544 hang in PCI-X. Avoid
2545 * terminating buffers within evenly-aligned dwords. */
2546 if(unlikely(adapter->pcix_82544 &&
2547 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2551 buffer_info->length = size;
2553 pci_map_single(adapter->pdev,
2557 buffer_info->time_stamp = jiffies;
2562 if(unlikely(++i == tx_ring->count)) i = 0;
2565 for(f = 0; f < nr_frags; f++) {
2566 struct skb_frag_struct *frag;
2568 frag = &skb_shinfo(skb)->frags[f];
2570 offset = frag->page_offset;
2573 buffer_info = &tx_ring->buffer_info[i];
2574 size = min(len, max_per_txd);
2576 /* Workaround for premature desc write-backs
2577 * in TSO mode. Append 4-byte sentinel desc */
2578 if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
2581 /* Workaround for potential 82544 hang in PCI-X.
2582 * Avoid terminating buffers within evenly-aligned
2584 if(unlikely(adapter->pcix_82544 &&
2585 !((unsigned long)(frag->page+offset+size-1) & 4) &&
2589 buffer_info->length = size;
2591 pci_map_page(adapter->pdev,
2596 buffer_info->time_stamp = jiffies;
2601 if(unlikely(++i == tx_ring->count)) i = 0;
2605 i = (i == 0) ? tx_ring->count - 1 : i - 1;
2606 tx_ring->buffer_info[i].skb = skb;
2607 tx_ring->buffer_info[first].next_to_watch = i;
2613 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2614 int tx_flags, int count)
2616 struct e1000_tx_desc *tx_desc = NULL;
2617 struct e1000_buffer *buffer_info;
2618 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2621 if(likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2622 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2624 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2626 if(likely(tx_flags & E1000_TX_FLAGS_IPV4))
2627 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2630 if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2631 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2632 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2635 if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
2636 txd_lower |= E1000_TXD_CMD_VLE;
2637 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
2640 i = tx_ring->next_to_use;
2643 buffer_info = &tx_ring->buffer_info[i];
2644 tx_desc = E1000_TX_DESC(*tx_ring, i);
2645 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2646 tx_desc->lower.data =
2647 cpu_to_le32(txd_lower | buffer_info->length);
2648 tx_desc->upper.data = cpu_to_le32(txd_upper);
2649 if(unlikely(++i == tx_ring->count)) i = 0;
2652 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
2654 /* Force memory writes to complete before letting h/w
2655 * know there are new descriptors to fetch. (Only
2656 * applicable for weak-ordered memory model archs,
2657 * such as IA-64). */
2660 tx_ring->next_to_use = i;
2661 writel(i, adapter->hw.hw_addr + tx_ring->tdt);
2665 * 82547 workaround to avoid controller hang in half-duplex environment.
2666 * The workaround is to avoid queuing a large packet that would span
2667 * the internal Tx FIFO ring boundary by notifying the stack to resend
2668 * the packet at a later time. This gives the Tx FIFO an opportunity to
2669 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2670 * to the beginning of the Tx FIFO.
2673 #define E1000_FIFO_HDR 0x10
2674 #define E1000_82547_PAD_LEN 0x3E0
2677 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
2679 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
2680 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
2682 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
2684 if(adapter->link_duplex != HALF_DUPLEX)
2685 goto no_fifo_stall_required;
2687 if(atomic_read(&adapter->tx_fifo_stall))
2690 if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
2691 atomic_set(&adapter->tx_fifo_stall, 1);
2695 no_fifo_stall_required:
2696 adapter->tx_fifo_head += skb_fifo_len;
2697 if(adapter->tx_fifo_head >= adapter->tx_fifo_size)
2698 adapter->tx_fifo_head -= adapter->tx_fifo_size;
2702 #define MINIMUM_DHCP_PACKET_SIZE 282
2704 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
2706 struct e1000_hw *hw = &adapter->hw;
2707 uint16_t length, offset;
2708 if(vlan_tx_tag_present(skb)) {
2709 if(!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
2710 ( adapter->hw.mng_cookie.status &
2711 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
2714 if ((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) {
2715 struct ethhdr *eth = (struct ethhdr *) skb->data;
2716 if((htons(ETH_P_IP) == eth->h_proto)) {
2717 const struct iphdr *ip =
2718 (struct iphdr *)((uint8_t *)skb->data+14);
2719 if(IPPROTO_UDP == ip->protocol) {
2720 struct udphdr *udp =
2721 (struct udphdr *)((uint8_t *)ip +
2723 if(ntohs(udp->dest) == 67) {
2724 offset = (uint8_t *)udp + 8 - skb->data;
2725 length = skb->len - offset;
2727 return e1000_mng_write_dhcp_info(hw,
2737 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2739 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2741 struct e1000_adapter *adapter = netdev_priv(netdev);
2742 struct e1000_tx_ring *tx_ring;
2743 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
2744 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
2745 unsigned int tx_flags = 0;
2746 unsigned int len = skb->len;
2747 unsigned long flags;
2748 unsigned int nr_frags = 0;
2749 unsigned int mss = 0;
2753 len -= skb->data_len;
2755 #ifdef CONFIG_E1000_MQ
2756 tx_ring = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id());
2758 tx_ring = adapter->tx_ring;
2761 if (unlikely(skb->len <= 0)) {
2762 dev_kfree_skb_any(skb);
2763 return NETDEV_TX_OK;
2767 mss = skb_shinfo(skb)->tso_size;
2768 /* The controller does a simple calculation to
2769 * make sure there is enough room in the FIFO before
2770 * initiating the DMA for each buffer. The calc is:
2771 * 4 = ceil(buffer len/mss). To make sure we don't
2772 * overrun the FIFO, adjust the max buffer len if mss
2776 max_per_txd = min(mss << 2, max_per_txd);
2777 max_txd_pwr = fls(max_per_txd) - 1;
2779 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2780 * points to just header, pull a few bytes of payload from
2781 * frags into skb->data */
2782 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2783 if (skb->data_len && (hdr_len == (skb->len - skb->data_len)) &&
2784 (adapter->hw.mac_type == e1000_82571 ||
2785 adapter->hw.mac_type == e1000_82572)) {
2786 len = skb->len - skb->data_len;
2790 if((mss) || (skb->ip_summed == CHECKSUM_HW))
2791 /* reserve a descriptor for the offload context */
2795 if(skb->ip_summed == CHECKSUM_HW)
2800 /* Controller Erratum workaround */
2801 if (!skb->data_len && tx_ring->last_tx_tso &&
2802 !skb_shinfo(skb)->tso_size)
2806 count += TXD_USE_COUNT(len, max_txd_pwr);
2808 if(adapter->pcix_82544)
2811 /* work-around for errata 10 and it applies to all controllers
2812 * in PCI-X mode, so add one more descriptor to the count
2814 if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2818 nr_frags = skb_shinfo(skb)->nr_frags;
2819 for(f = 0; f < nr_frags; f++)
2820 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
2822 if(adapter->pcix_82544)
2825 unsigned int pull_size;
2826 pull_size = min((unsigned int)4, skb->data_len);
2827 if (!__pskb_pull_tail(skb, pull_size)) {
2828 printk(KERN_ERR "__pskb_pull_tail failed.\n");
2829 dev_kfree_skb_any(skb);
2833 if(adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) )
2834 e1000_transfer_dhcp_info(adapter, skb);
2836 local_irq_save(flags);
2837 if (!spin_trylock(&tx_ring->tx_lock)) {
2838 /* Collision - tell upper layer to requeue */
2839 local_irq_restore(flags);
2840 return NETDEV_TX_LOCKED;
2843 /* need: count + 2 desc gap to keep tail from touching
2844 * head, otherwise try next time */
2845 if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) {
2846 netif_stop_queue(netdev);
2847 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2848 return NETDEV_TX_BUSY;
2851 if(unlikely(adapter->hw.mac_type == e1000_82547)) {
2852 if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
2853 netif_stop_queue(netdev);
2854 mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
2855 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2856 return NETDEV_TX_BUSY;
2860 if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
2861 tx_flags |= E1000_TX_FLAGS_VLAN;
2862 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
2865 first = tx_ring->next_to_use;
2867 tso = e1000_tso(adapter, tx_ring, skb);
2869 dev_kfree_skb_any(skb);
2870 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2871 return NETDEV_TX_OK;
2875 tx_ring->last_tx_tso = 1;
2876 tx_flags |= E1000_TX_FLAGS_TSO;
2877 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
2878 tx_flags |= E1000_TX_FLAGS_CSUM;
2880 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2881 * 82571 hardware supports TSO capabilities for IPv6 as well...
2882 * no longer assume, we must. */
2883 if (likely(skb->protocol == ntohs(ETH_P_IP)))
2884 tx_flags |= E1000_TX_FLAGS_IPV4;
2886 e1000_tx_queue(adapter, tx_ring, tx_flags,
2887 e1000_tx_map(adapter, tx_ring, skb, first,
2888 max_per_txd, nr_frags, mss));
2890 netdev->trans_start = jiffies;
2892 /* Make sure there is space in the ring for the next send. */
2893 if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2))
2894 netif_stop_queue(netdev);
2896 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2897 return NETDEV_TX_OK;
2901 * e1000_tx_timeout - Respond to a Tx Hang
2902 * @netdev: network interface device structure
2906 e1000_tx_timeout(struct net_device *netdev)
2908 struct e1000_adapter *adapter = netdev_priv(netdev);
2910 /* Do the reset outside of interrupt context */
2911 schedule_work(&adapter->tx_timeout_task);
2915 e1000_tx_timeout_task(struct net_device *netdev)
2917 struct e1000_adapter *adapter = netdev_priv(netdev);
2919 adapter->tx_timeout_count++;
2920 e1000_down(adapter);
2925 * e1000_get_stats - Get System Network Statistics
2926 * @netdev: network interface device structure
2928 * Returns the address of the device statistics structure.
2929 * The statistics are actually updated from the timer callback.
2932 static struct net_device_stats *
2933 e1000_get_stats(struct net_device *netdev)
2935 struct e1000_adapter *adapter = netdev_priv(netdev);
2937 /* only return the current stats */
2938 return &adapter->net_stats;
2942 * e1000_change_mtu - Change the Maximum Transfer Unit
2943 * @netdev: network interface device structure
2944 * @new_mtu: new value for maximum frame size
2946 * Returns 0 on success, negative on failure
2950 e1000_change_mtu(struct net_device *netdev, int new_mtu)
2952 struct e1000_adapter *adapter = netdev_priv(netdev);
2953 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
2955 if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
2956 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2957 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
2961 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2962 /* might want this to be bigger enum check... */
2963 /* 82571 controllers limit jumbo frame size to 10500 bytes */
2964 if ((adapter->hw.mac_type == e1000_82571 ||
2965 adapter->hw.mac_type == e1000_82572) &&
2966 max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
2967 DPRINTK(PROBE, ERR, "MTU > 9216 bytes not supported "
2968 "on 82571 and 82572 controllers.\n");
2972 if(adapter->hw.mac_type == e1000_82573 &&
2973 max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
2974 DPRINTK(PROBE, ERR, "Jumbo Frames not supported "
2979 if(adapter->hw.mac_type > e1000_82547_rev_2) {
2980 adapter->rx_buffer_len = max_frame;
2981 E1000_ROUNDUP(adapter->rx_buffer_len, 1024);
2983 if(unlikely((adapter->hw.mac_type < e1000_82543) &&
2984 (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) {
2985 DPRINTK(PROBE, ERR, "Jumbo Frames not supported "
2990 if(max_frame <= E1000_RXBUFFER_2048) {
2991 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
2992 } else if(max_frame <= E1000_RXBUFFER_4096) {
2993 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
2994 } else if(max_frame <= E1000_RXBUFFER_8192) {
2995 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
2996 } else if(max_frame <= E1000_RXBUFFER_16384) {
2997 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3002 netdev->mtu = new_mtu;
3004 if(netif_running(netdev)) {
3005 e1000_down(adapter);
3009 adapter->hw.max_frame_size = max_frame;
3015 * e1000_update_stats - Update the board statistics counters
3016 * @adapter: board private structure
3020 e1000_update_stats(struct e1000_adapter *adapter)
3022 struct e1000_hw *hw = &adapter->hw;
3023 unsigned long flags;
3026 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3028 spin_lock_irqsave(&adapter->stats_lock, flags);
3030 /* these counters are modified from e1000_adjust_tbi_stats,
3031 * called from the interrupt context, so they must only
3032 * be written while holding adapter->stats_lock
3035 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
3036 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
3037 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
3038 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
3039 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
3040 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
3041 adapter->stats.roc += E1000_READ_REG(hw, ROC);
3042 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
3043 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
3044 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
3045 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
3046 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
3047 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
3049 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
3050 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
3051 adapter->stats.scc += E1000_READ_REG(hw, SCC);
3052 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
3053 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
3054 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
3055 adapter->stats.dc += E1000_READ_REG(hw, DC);
3056 adapter->stats.sec += E1000_READ_REG(hw, SEC);
3057 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
3058 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
3059 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
3060 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
3061 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
3062 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
3063 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
3064 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
3065 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
3066 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
3067 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
3068 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
3069 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
3070 adapter->stats.torl += E1000_READ_REG(hw, TORL);
3071 adapter->stats.torh += E1000_READ_REG(hw, TORH);
3072 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
3073 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
3074 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
3075 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
3076 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
3077 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
3078 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
3079 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
3080 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
3081 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
3082 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
3084 /* used for adaptive IFS */
3086 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
3087 adapter->stats.tpt += hw->tx_packet_delta;
3088 hw->collision_delta = E1000_READ_REG(hw, COLC);
3089 adapter->stats.colc += hw->collision_delta;
3091 if(hw->mac_type >= e1000_82543) {
3092 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
3093 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
3094 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
3095 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
3096 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
3097 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
3099 if(hw->mac_type > e1000_82547_rev_2) {
3100 adapter->stats.iac += E1000_READ_REG(hw, IAC);
3101 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC);
3102 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC);
3103 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC);
3104 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC);
3105 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC);
3106 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC);
3107 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC);
3108 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC);
3111 /* Fill out the OS statistics structure */
3113 adapter->net_stats.rx_packets = adapter->stats.gprc;
3114 adapter->net_stats.tx_packets = adapter->stats.gptc;
3115 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
3116 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
3117 adapter->net_stats.multicast = adapter->stats.mprc;
3118 adapter->net_stats.collisions = adapter->stats.colc;
3122 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3123 adapter->stats.crcerrs + adapter->stats.algnerrc +
3124 adapter->stats.rlec + adapter->stats.cexterr;
3125 adapter->net_stats.rx_dropped = 0;
3126 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
3127 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3128 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3129 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3133 adapter->net_stats.tx_errors = adapter->stats.ecol +
3134 adapter->stats.latecol;
3135 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3136 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3137 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3139 /* Tx Dropped needs to be maintained elsewhere */
3143 if(hw->media_type == e1000_media_type_copper) {
3144 if((adapter->link_speed == SPEED_1000) &&
3145 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3146 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3147 adapter->phy_stats.idle_errors += phy_tmp;
3150 if((hw->mac_type <= e1000_82546) &&
3151 (hw->phy_type == e1000_phy_m88) &&
3152 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3153 adapter->phy_stats.receive_errors += phy_tmp;
3156 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3159 #ifdef CONFIG_E1000_MQ
3161 e1000_rx_schedule(void *data)
3163 struct net_device *poll_dev, *netdev = data;
3164 struct e1000_adapter *adapter = netdev->priv;
3165 int this_cpu = get_cpu();
3167 poll_dev = *per_cpu_ptr(adapter->cpu_netdev, this_cpu);
3168 if (poll_dev == NULL) {
3173 if (likely(netif_rx_schedule_prep(poll_dev)))
3174 __netif_rx_schedule(poll_dev);
3176 e1000_irq_enable(adapter);
3183 * e1000_intr - Interrupt Handler
3184 * @irq: interrupt number
3185 * @data: pointer to a network interface device structure
3186 * @pt_regs: CPU registers structure
3190 e1000_intr(int irq, void *data, struct pt_regs *regs)
3192 struct net_device *netdev = data;
3193 struct e1000_adapter *adapter = netdev_priv(netdev);
3194 struct e1000_hw *hw = &adapter->hw;
3195 uint32_t icr = E1000_READ_REG(hw, ICR);
3196 #if defined(CONFIG_E1000_NAPI) && defined(CONFIG_E1000_MQ) || !defined(CONFIG_E1000_NAPI)
3201 return IRQ_NONE; /* Not our interrupt */
3203 if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3204 hw->get_link_status = 1;
3205 mod_timer(&adapter->watchdog_timer, jiffies);
3208 #ifdef CONFIG_E1000_NAPI
3209 atomic_inc(&adapter->irq_sem);
3210 E1000_WRITE_REG(hw, IMC, ~0);
3211 E1000_WRITE_FLUSH(hw);
3212 #ifdef CONFIG_E1000_MQ
3213 if (atomic_read(&adapter->rx_sched_call_data.count) == 0) {
3214 /* We must setup the cpumask once count == 0 since
3215 * each cpu bit is cleared when the work is done. */
3216 adapter->rx_sched_call_data.cpumask = adapter->cpumask;
3217 atomic_add(adapter->num_rx_queues - 1, &adapter->irq_sem);
3218 atomic_set(&adapter->rx_sched_call_data.count,
3219 adapter->num_rx_queues);
3220 smp_call_async_mask(&adapter->rx_sched_call_data);
3222 printk("call_data.count == %u\n", atomic_read(&adapter->rx_sched_call_data.count));
3224 #else /* if !CONFIG_E1000_MQ */
3225 if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0])))
3226 __netif_rx_schedule(&adapter->polling_netdev[0]);
3228 e1000_irq_enable(adapter);
3229 #endif /* CONFIG_E1000_MQ */
3231 #else /* if !CONFIG_E1000_NAPI */
3232 /* Writing IMC and IMS is needed for 82547.
3233 Due to Hub Link bus being occupied, an interrupt
3234 de-assertion message is not able to be sent.
3235 When an interrupt assertion message is generated later,
3236 two messages are re-ordered and sent out.
3237 That causes APIC to think 82547 is in de-assertion
3238 state, while 82547 is in assertion state, resulting
3239 in dead lock. Writing IMC forces 82547 into
3242 if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){
3243 atomic_inc(&adapter->irq_sem);
3244 E1000_WRITE_REG(hw, IMC, ~0);
3247 for(i = 0; i < E1000_MAX_INTR; i++)
3248 if(unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
3249 !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
3252 if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
3253 e1000_irq_enable(adapter);
3255 #endif /* CONFIG_E1000_NAPI */
3260 #ifdef CONFIG_E1000_NAPI
3262 * e1000_clean - NAPI Rx polling callback
3263 * @adapter: board private structure
3267 e1000_clean(struct net_device *poll_dev, int *budget)
3269 struct e1000_adapter *adapter;
3270 int work_to_do = min(*budget, poll_dev->quota);
3271 int tx_cleaned, i = 0, work_done = 0;
3273 /* Must NOT use netdev_priv macro here. */
3274 adapter = poll_dev->priv;
3276 /* Keep link state information with original netdev */
3277 if (!netif_carrier_ok(adapter->netdev))
3280 while (poll_dev != &adapter->polling_netdev[i]) {
3282 if (unlikely(i == adapter->num_rx_queues))
3286 tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]);
3287 adapter->clean_rx(adapter, &adapter->rx_ring[i],
3288 &work_done, work_to_do);
3290 *budget -= work_done;
3291 poll_dev->quota -= work_done;
3293 /* If no Tx and not enough Rx work done, exit the polling mode */
3294 if((!tx_cleaned && (work_done == 0)) ||
3295 !netif_running(adapter->netdev)) {
3297 netif_rx_complete(poll_dev);
3298 e1000_irq_enable(adapter);
3307 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3308 * @adapter: board private structure
3312 e1000_clean_tx_irq(struct e1000_adapter *adapter,
3313 struct e1000_tx_ring *tx_ring)
3315 struct net_device *netdev = adapter->netdev;
3316 struct e1000_tx_desc *tx_desc, *eop_desc;
3317 struct e1000_buffer *buffer_info;
3318 unsigned int i, eop;
3319 boolean_t cleaned = FALSE;
3321 i = tx_ring->next_to_clean;
3322 eop = tx_ring->buffer_info[i].next_to_watch;
3323 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3325 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
3326 for(cleaned = FALSE; !cleaned; ) {
3327 tx_desc = E1000_TX_DESC(*tx_ring, i);
3328 buffer_info = &tx_ring->buffer_info[i];
3329 cleaned = (i == eop);
3331 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3333 tx_desc->buffer_addr = 0;
3334 tx_desc->lower.data = 0;
3335 tx_desc->upper.data = 0;
3337 if(unlikely(++i == tx_ring->count)) i = 0;
3340 eop = tx_ring->buffer_info[i].next_to_watch;
3341 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3344 tx_ring->next_to_clean = i;
3346 spin_lock(&tx_ring->tx_lock);
3348 if(unlikely(cleaned && netif_queue_stopped(netdev) &&
3349 netif_carrier_ok(netdev)))
3350 netif_wake_queue(netdev);
3352 spin_unlock(&tx_ring->tx_lock);
3354 if (adapter->detect_tx_hung) {
3355 /* Detect a transmit hang in hardware, this serializes the
3356 * check with the clearing of time_stamp and movement of i */
3357 adapter->detect_tx_hung = FALSE;
3358 if (tx_ring->buffer_info[i].dma &&
3359 time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ)
3360 && !(E1000_READ_REG(&adapter->hw, STATUS) &
3361 E1000_STATUS_TXOFF)) {
3363 /* detected Tx unit hang */
3364 i = tx_ring->next_to_clean;
3365 eop = tx_ring->buffer_info[i].next_to_watch;
3366 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3367 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3370 " next_to_use <%x>\n"
3371 " next_to_clean <%x>\n"
3372 "buffer_info[next_to_clean]\n"
3374 " time_stamp <%lx>\n"
3375 " next_to_watch <%x>\n"
3377 " next_to_watch.status <%x>\n",
3378 readl(adapter->hw.hw_addr + tx_ring->tdh),
3379 readl(adapter->hw.hw_addr + tx_ring->tdt),
3380 tx_ring->next_to_use,
3382 (unsigned long long)tx_ring->buffer_info[i].dma,
3383 tx_ring->buffer_info[i].time_stamp,
3386 eop_desc->upper.fields.status);
3387 netif_stop_queue(netdev);
3394 * e1000_rx_checksum - Receive Checksum Offload for 82543
3395 * @adapter: board private structure
3396 * @status_err: receive descriptor status and error fields
3397 * @csum: receive descriptor csum field
3398 * @sk_buff: socket buffer with received data
3402 e1000_rx_checksum(struct e1000_adapter *adapter,
3403 uint32_t status_err, uint32_t csum,
3404 struct sk_buff *skb)
3406 uint16_t status = (uint16_t)status_err;
3407 uint8_t errors = (uint8_t)(status_err >> 24);
3408 skb->ip_summed = CHECKSUM_NONE;
3410 /* 82543 or newer only */
3411 if(unlikely(adapter->hw.mac_type < e1000_82543)) return;
3412 /* Ignore Checksum bit is set */
3413 if(unlikely(status & E1000_RXD_STAT_IXSM)) return;
3414 /* TCP/UDP checksum error bit is set */
3415 if(unlikely(errors & E1000_RXD_ERR_TCPE)) {
3416 /* let the stack verify checksum errors */
3417 adapter->hw_csum_err++;
3420 /* TCP/UDP Checksum has not been calculated */
3421 if(adapter->hw.mac_type <= e1000_82547_rev_2) {
3422 if(!(status & E1000_RXD_STAT_TCPCS))
3425 if(!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
3428 /* It must be a TCP or UDP packet with a valid checksum */
3429 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3430 /* TCP checksum is good */
3431 skb->ip_summed = CHECKSUM_UNNECESSARY;
3432 } else if (adapter->hw.mac_type > e1000_82547_rev_2) {
3433 /* IP fragment with UDP payload */
3434 /* Hardware complements the payload checksum, so we undo it
3435 * and then put the value in host order for further stack use.
3437 csum = ntohl(csum ^ 0xFFFF);
3439 skb->ip_summed = CHECKSUM_HW;
3441 adapter->hw_csum_good++;
3445 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3446 * @adapter: board private structure
3450 #ifdef CONFIG_E1000_NAPI
3451 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3452 struct e1000_rx_ring *rx_ring,
3453 int *work_done, int work_to_do)
3455 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3456 struct e1000_rx_ring *rx_ring)
3459 struct net_device *netdev = adapter->netdev;
3460 struct pci_dev *pdev = adapter->pdev;
3461 struct e1000_rx_desc *rx_desc;
3462 struct e1000_buffer *buffer_info;
3463 struct sk_buff *skb;
3464 unsigned long flags;
3468 boolean_t cleaned = FALSE;
3470 i = rx_ring->next_to_clean;
3471 rx_desc = E1000_RX_DESC(*rx_ring, i);
3473 while(rx_desc->status & E1000_RXD_STAT_DD) {
3474 buffer_info = &rx_ring->buffer_info[i];
3475 #ifdef CONFIG_E1000_NAPI
3476 if(*work_done >= work_to_do)
3482 pci_unmap_single(pdev,
3484 buffer_info->length,
3485 PCI_DMA_FROMDEVICE);
3487 skb = buffer_info->skb;
3488 length = le16_to_cpu(rx_desc->length);
3490 if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) {
3491 /* All receives must fit into a single buffer */
3492 E1000_DBG("%s: Receive packet consumed multiple"
3493 " buffers\n", netdev->name);
3494 dev_kfree_skb_irq(skb);
3498 if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
3499 last_byte = *(skb->data + length - 1);
3500 if(TBI_ACCEPT(&adapter->hw, rx_desc->status,
3501 rx_desc->errors, length, last_byte)) {
3502 spin_lock_irqsave(&adapter->stats_lock, flags);
3503 e1000_tbi_adjust_stats(&adapter->hw,
3506 spin_unlock_irqrestore(&adapter->stats_lock,
3510 dev_kfree_skb_irq(skb);
3516 skb_put(skb, length - ETHERNET_FCS_SIZE);
3518 /* Receive Checksum Offload */
3519 e1000_rx_checksum(adapter,
3520 (uint32_t)(rx_desc->status) |
3521 ((uint32_t)(rx_desc->errors) << 24),
3522 rx_desc->csum, skb);
3523 skb->protocol = eth_type_trans(skb, netdev);
3524 #ifdef CONFIG_E1000_NAPI
3525 if(unlikely(adapter->vlgrp &&
3526 (rx_desc->status & E1000_RXD_STAT_VP))) {
3527 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3528 le16_to_cpu(rx_desc->special) &
3529 E1000_RXD_SPC_VLAN_MASK);
3531 netif_receive_skb(skb);
3533 #else /* CONFIG_E1000_NAPI */
3534 if(unlikely(adapter->vlgrp &&
3535 (rx_desc->status & E1000_RXD_STAT_VP))) {
3536 vlan_hwaccel_rx(skb, adapter->vlgrp,
3537 le16_to_cpu(rx_desc->special) &
3538 E1000_RXD_SPC_VLAN_MASK);
3542 #endif /* CONFIG_E1000_NAPI */
3543 netdev->last_rx = jiffies;
3546 rx_desc->status = 0;
3547 buffer_info->skb = NULL;
3548 if(unlikely(++i == rx_ring->count)) i = 0;
3550 rx_desc = E1000_RX_DESC(*rx_ring, i);
3552 rx_ring->next_to_clean = i;
3553 adapter->alloc_rx_buf(adapter, rx_ring);
3559 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3560 * @adapter: board private structure
3564 #ifdef CONFIG_E1000_NAPI
3565 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3566 struct e1000_rx_ring *rx_ring,
3567 int *work_done, int work_to_do)
3569 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3570 struct e1000_rx_ring *rx_ring)
3573 union e1000_rx_desc_packet_split *rx_desc;
3574 struct net_device *netdev = adapter->netdev;
3575 struct pci_dev *pdev = adapter->pdev;
3576 struct e1000_buffer *buffer_info;
3577 struct e1000_ps_page *ps_page;
3578 struct e1000_ps_page_dma *ps_page_dma;
3579 struct sk_buff *skb;
3581 uint32_t length, staterr;
3582 boolean_t cleaned = FALSE;
3584 i = rx_ring->next_to_clean;
3585 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3586 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
3588 while(staterr & E1000_RXD_STAT_DD) {
3589 buffer_info = &rx_ring->buffer_info[i];
3590 ps_page = &rx_ring->ps_page[i];
3591 ps_page_dma = &rx_ring->ps_page_dma[i];
3592 #ifdef CONFIG_E1000_NAPI
3593 if(unlikely(*work_done >= work_to_do))
3598 pci_unmap_single(pdev, buffer_info->dma,
3599 buffer_info->length,
3600 PCI_DMA_FROMDEVICE);
3602 skb = buffer_info->skb;
3604 if(unlikely(!(staterr & E1000_RXD_STAT_EOP))) {
3605 E1000_DBG("%s: Packet Split buffers didn't pick up"
3606 " the full packet\n", netdev->name);
3607 dev_kfree_skb_irq(skb);
3611 if(unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
3612 dev_kfree_skb_irq(skb);
3616 length = le16_to_cpu(rx_desc->wb.middle.length0);
3618 if(unlikely(!length)) {
3619 E1000_DBG("%s: Last part of the packet spanning"
3620 " multiple descriptors\n", netdev->name);
3621 dev_kfree_skb_irq(skb);
3626 skb_put(skb, length);
3628 for(j = 0; j < adapter->rx_ps_pages; j++) {
3629 if(!(length = le16_to_cpu(rx_desc->wb.upper.length[j])))
3632 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j],
3633 PAGE_SIZE, PCI_DMA_FROMDEVICE);
3634 ps_page_dma->ps_page_dma[j] = 0;
3635 skb_shinfo(skb)->frags[j].page =
3636 ps_page->ps_page[j];
3637 ps_page->ps_page[j] = NULL;
3638 skb_shinfo(skb)->frags[j].page_offset = 0;
3639 skb_shinfo(skb)->frags[j].size = length;
3640 skb_shinfo(skb)->nr_frags++;
3642 skb->data_len += length;
3645 e1000_rx_checksum(adapter, staterr,
3646 rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
3647 skb->protocol = eth_type_trans(skb, netdev);
3649 if(likely(rx_desc->wb.upper.header_status &
3650 E1000_RXDPS_HDRSTAT_HDRSP)) {
3651 adapter->rx_hdr_split++;
3652 #ifdef HAVE_RX_ZERO_COPY
3653 skb_shinfo(skb)->zero_copy = TRUE;
3656 #ifdef CONFIG_E1000_NAPI
3657 if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
3658 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3659 le16_to_cpu(rx_desc->wb.middle.vlan) &
3660 E1000_RXD_SPC_VLAN_MASK);
3662 netif_receive_skb(skb);
3664 #else /* CONFIG_E1000_NAPI */
3665 if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
3666 vlan_hwaccel_rx(skb, adapter->vlgrp,
3667 le16_to_cpu(rx_desc->wb.middle.vlan) &
3668 E1000_RXD_SPC_VLAN_MASK);
3672 #endif /* CONFIG_E1000_NAPI */
3673 netdev->last_rx = jiffies;
3676 rx_desc->wb.middle.status_error &= ~0xFF;
3677 buffer_info->skb = NULL;
3678 if(unlikely(++i == rx_ring->count)) i = 0;
3680 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3681 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
3683 rx_ring->next_to_clean = i;
3684 adapter->alloc_rx_buf(adapter, rx_ring);
3690 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3691 * @adapter: address of board private structure
3695 e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
3696 struct e1000_rx_ring *rx_ring)
3698 struct net_device *netdev = adapter->netdev;
3699 struct pci_dev *pdev = adapter->pdev;
3700 struct e1000_rx_desc *rx_desc;
3701 struct e1000_buffer *buffer_info;
3702 struct sk_buff *skb;
3704 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
3706 i = rx_ring->next_to_use;
3707 buffer_info = &rx_ring->buffer_info[i];
3709 while(!buffer_info->skb) {
3710 skb = dev_alloc_skb(bufsz);
3712 if(unlikely(!skb)) {
3713 /* Better luck next round */
3717 /* Fix for errata 23, can't cross 64kB boundary */
3718 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3719 struct sk_buff *oldskb = skb;
3720 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
3721 "at %p\n", bufsz, skb->data);
3722 /* Try again, without freeing the previous */
3723 skb = dev_alloc_skb(bufsz);
3724 /* Failed allocation, critical failure */
3726 dev_kfree_skb(oldskb);
3730 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3733 dev_kfree_skb(oldskb);
3734 break; /* while !buffer_info->skb */
3736 /* Use new allocation */
3737 dev_kfree_skb(oldskb);
3740 /* Make buffer alignment 2 beyond a 16 byte boundary
3741 * this will result in a 16 byte aligned IP header after
3742 * the 14 byte MAC header is removed
3744 skb_reserve(skb, NET_IP_ALIGN);
3748 buffer_info->skb = skb;
3749 buffer_info->length = adapter->rx_buffer_len;
3750 buffer_info->dma = pci_map_single(pdev,
3752 adapter->rx_buffer_len,
3753 PCI_DMA_FROMDEVICE);
3755 /* Fix for errata 23, can't cross 64kB boundary */
3756 if (!e1000_check_64k_bound(adapter,
3757 (void *)(unsigned long)buffer_info->dma,
3758 adapter->rx_buffer_len)) {
3759 DPRINTK(RX_ERR, ERR,
3760 "dma align check failed: %u bytes at %p\n",
3761 adapter->rx_buffer_len,
3762 (void *)(unsigned long)buffer_info->dma);
3764 buffer_info->skb = NULL;
3766 pci_unmap_single(pdev, buffer_info->dma,
3767 adapter->rx_buffer_len,
3768 PCI_DMA_FROMDEVICE);
3770 break; /* while !buffer_info->skb */
3772 rx_desc = E1000_RX_DESC(*rx_ring, i);
3773 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3775 if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) {
3776 /* Force memory writes to complete before letting h/w
3777 * know there are new descriptors to fetch. (Only
3778 * applicable for weak-ordered memory model archs,
3779 * such as IA-64). */
3781 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
3784 if(unlikely(++i == rx_ring->count)) i = 0;
3785 buffer_info = &rx_ring->buffer_info[i];
3788 rx_ring->next_to_use = i;
3792 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3793 * @adapter: address of board private structure
3797 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
3798 struct e1000_rx_ring *rx_ring)
3800 struct net_device *netdev = adapter->netdev;
3801 struct pci_dev *pdev = adapter->pdev;
3802 union e1000_rx_desc_packet_split *rx_desc;
3803 struct e1000_buffer *buffer_info;
3804 struct e1000_ps_page *ps_page;
3805 struct e1000_ps_page_dma *ps_page_dma;
3806 struct sk_buff *skb;
3809 i = rx_ring->next_to_use;
3810 buffer_info = &rx_ring->buffer_info[i];
3811 ps_page = &rx_ring->ps_page[i];
3812 ps_page_dma = &rx_ring->ps_page_dma[i];
3814 while(!buffer_info->skb) {
3815 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3817 for(j = 0; j < PS_PAGE_BUFFERS; j++) {
3818 if (j < adapter->rx_ps_pages) {
3819 if (likely(!ps_page->ps_page[j])) {
3820 ps_page->ps_page[j] =
3821 alloc_page(GFP_ATOMIC);
3822 if (unlikely(!ps_page->ps_page[j]))
3824 ps_page_dma->ps_page_dma[j] =
3826 ps_page->ps_page[j],
3828 PCI_DMA_FROMDEVICE);
3830 /* Refresh the desc even if buffer_addrs didn't
3831 * change because each write-back erases
3834 rx_desc->read.buffer_addr[j+1] =
3835 cpu_to_le64(ps_page_dma->ps_page_dma[j]);
3837 rx_desc->read.buffer_addr[j+1] = ~0;
3840 skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN);
3845 /* Make buffer alignment 2 beyond a 16 byte boundary
3846 * this will result in a 16 byte aligned IP header after
3847 * the 14 byte MAC header is removed
3849 skb_reserve(skb, NET_IP_ALIGN);
3853 buffer_info->skb = skb;
3854 buffer_info->length = adapter->rx_ps_bsize0;
3855 buffer_info->dma = pci_map_single(pdev, skb->data,
3856 adapter->rx_ps_bsize0,
3857 PCI_DMA_FROMDEVICE);
3859 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
3861 if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) {
3862 /* Force memory writes to complete before letting h/w
3863 * know there are new descriptors to fetch. (Only
3864 * applicable for weak-ordered memory model archs,
3865 * such as IA-64). */
3867 /* Hardware increments by 16 bytes, but packet split
3868 * descriptors are 32 bytes...so we increment tail
3871 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt);
3874 if(unlikely(++i == rx_ring->count)) i = 0;
3875 buffer_info = &rx_ring->buffer_info[i];
3876 ps_page = &rx_ring->ps_page[i];
3877 ps_page_dma = &rx_ring->ps_page_dma[i];
3881 rx_ring->next_to_use = i;
3885 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3890 e1000_smartspeed(struct e1000_adapter *adapter)
3892 uint16_t phy_status;
3895 if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
3896 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
3899 if(adapter->smartspeed == 0) {
3900 /* If Master/Slave config fault is asserted twice,
3901 * we assume back-to-back */
3902 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
3903 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
3904 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
3905 if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
3906 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
3907 if(phy_ctrl & CR_1000T_MS_ENABLE) {
3908 phy_ctrl &= ~CR_1000T_MS_ENABLE;
3909 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
3911 adapter->smartspeed++;
3912 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
3913 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
3915 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
3916 MII_CR_RESTART_AUTO_NEG);
3917 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
3922 } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
3923 /* If still no link, perhaps using 2/3 pair cable */
3924 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
3925 phy_ctrl |= CR_1000T_MS_ENABLE;
3926 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
3927 if(!e1000_phy_setup_autoneg(&adapter->hw) &&
3928 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
3929 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
3930 MII_CR_RESTART_AUTO_NEG);
3931 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
3934 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3935 if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
3936 adapter->smartspeed = 0;
3947 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
3953 return e1000_mii_ioctl(netdev, ifr, cmd);
3967 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
3969 struct e1000_adapter *adapter = netdev_priv(netdev);
3970 struct mii_ioctl_data *data = if_mii(ifr);
3974 unsigned long flags;
3976 if(adapter->hw.media_type != e1000_media_type_copper)
3981 data->phy_id = adapter->hw.phy_addr;
3984 if(!capable(CAP_NET_ADMIN))
3986 spin_lock_irqsave(&adapter->stats_lock, flags);
3987 if(e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
3989 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3992 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3995 if(!capable(CAP_NET_ADMIN))
3997 if(data->reg_num & ~(0x1F))
3999 mii_reg = data->val_in;
4000 spin_lock_irqsave(&adapter->stats_lock, flags);
4001 if(e1000_write_phy_reg(&adapter->hw, data->reg_num,
4003 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4006 if(adapter->hw.phy_type == e1000_phy_m88) {
4007 switch (data->reg_num) {
4009 if(mii_reg & MII_CR_POWER_DOWN)
4011 if(mii_reg & MII_CR_AUTO_NEG_EN) {
4012 adapter->hw.autoneg = 1;
4013 adapter->hw.autoneg_advertised = 0x2F;
4016 spddplx = SPEED_1000;
4017 else if (mii_reg & 0x2000)
4018 spddplx = SPEED_100;
4021 spddplx += (mii_reg & 0x100)
4024 retval = e1000_set_spd_dplx(adapter,
4027 spin_unlock_irqrestore(
4028 &adapter->stats_lock,
4033 if(netif_running(adapter->netdev)) {
4034 e1000_down(adapter);
4037 e1000_reset(adapter);
4039 case M88E1000_PHY_SPEC_CTRL:
4040 case M88E1000_EXT_PHY_SPEC_CTRL:
4041 if(e1000_phy_reset(&adapter->hw)) {
4042 spin_unlock_irqrestore(
4043 &adapter->stats_lock, flags);
4049 switch (data->reg_num) {
4051 if(mii_reg & MII_CR_POWER_DOWN)
4053 if(netif_running(adapter->netdev)) {
4054 e1000_down(adapter);
4057 e1000_reset(adapter);
4061 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4066 return E1000_SUCCESS;
4070 e1000_pci_set_mwi(struct e1000_hw *hw)
4072 struct e1000_adapter *adapter = hw->back;
4073 int ret_val = pci_set_mwi(adapter->pdev);
4076 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4080 e1000_pci_clear_mwi(struct e1000_hw *hw)
4082 struct e1000_adapter *adapter = hw->back;
4084 pci_clear_mwi(adapter->pdev);
4088 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4090 struct e1000_adapter *adapter = hw->back;
4092 pci_read_config_word(adapter->pdev, reg, value);
4096 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4098 struct e1000_adapter *adapter = hw->back;
4100 pci_write_config_word(adapter->pdev, reg, *value);
4104 e1000_io_read(struct e1000_hw *hw, unsigned long port)
4110 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
4116 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
4118 struct e1000_adapter *adapter = netdev_priv(netdev);
4119 uint32_t ctrl, rctl;
4121 e1000_irq_disable(adapter);
4122 adapter->vlgrp = grp;
4125 /* enable VLAN tag insert/strip */
4126 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4127 ctrl |= E1000_CTRL_VME;
4128 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4130 /* enable VLAN receive filtering */
4131 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4132 rctl |= E1000_RCTL_VFE;
4133 rctl &= ~E1000_RCTL_CFIEN;
4134 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4135 e1000_update_mng_vlan(adapter);
4137 /* disable VLAN tag insert/strip */
4138 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4139 ctrl &= ~E1000_CTRL_VME;
4140 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4142 /* disable VLAN filtering */
4143 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4144 rctl &= ~E1000_RCTL_VFE;
4145 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4146 if(adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) {
4147 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4148 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4152 e1000_irq_enable(adapter);
4156 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
4158 struct e1000_adapter *adapter = netdev_priv(netdev);
4159 uint32_t vfta, index;
4160 if((adapter->hw.mng_cookie.status &
4161 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4162 (vid == adapter->mng_vlan_id))
4164 /* add VID to filter table */
4165 index = (vid >> 5) & 0x7F;
4166 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4167 vfta |= (1 << (vid & 0x1F));
4168 e1000_write_vfta(&adapter->hw, index, vfta);
4172 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
4174 struct e1000_adapter *adapter = netdev_priv(netdev);
4175 uint32_t vfta, index;
4177 e1000_irq_disable(adapter);
4180 adapter->vlgrp->vlan_devices[vid] = NULL;
4182 e1000_irq_enable(adapter);
4184 if((adapter->hw.mng_cookie.status &
4185 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4186 (vid == adapter->mng_vlan_id))
4188 /* remove VID from filter table */
4189 index = (vid >> 5) & 0x7F;
4190 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4191 vfta &= ~(1 << (vid & 0x1F));
4192 e1000_write_vfta(&adapter->hw, index, vfta);
4196 e1000_restore_vlan(struct e1000_adapter *adapter)
4198 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4200 if(adapter->vlgrp) {
4202 for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4203 if(!adapter->vlgrp->vlan_devices[vid])
4205 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4211 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
4213 adapter->hw.autoneg = 0;
4215 /* Fiber NICs only allow 1000 gbps Full duplex */
4216 if((adapter->hw.media_type == e1000_media_type_fiber) &&
4217 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4218 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4223 case SPEED_10 + DUPLEX_HALF:
4224 adapter->hw.forced_speed_duplex = e1000_10_half;
4226 case SPEED_10 + DUPLEX_FULL:
4227 adapter->hw.forced_speed_duplex = e1000_10_full;
4229 case SPEED_100 + DUPLEX_HALF:
4230 adapter->hw.forced_speed_duplex = e1000_100_half;
4232 case SPEED_100 + DUPLEX_FULL:
4233 adapter->hw.forced_speed_duplex = e1000_100_full;
4235 case SPEED_1000 + DUPLEX_FULL:
4236 adapter->hw.autoneg = 1;
4237 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
4239 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4241 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4249 e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4251 struct net_device *netdev = pci_get_drvdata(pdev);
4252 struct e1000_adapter *adapter = netdev_priv(netdev);
4253 uint32_t ctrl, ctrl_ext, rctl, manc, status;
4254 uint32_t wufc = adapter->wol;
4256 netif_device_detach(netdev);
4258 if(netif_running(netdev))
4259 e1000_down(adapter);
4261 status = E1000_READ_REG(&adapter->hw, STATUS);
4262 if(status & E1000_STATUS_LU)
4263 wufc &= ~E1000_WUFC_LNKC;
4266 e1000_setup_rctl(adapter);
4267 e1000_set_multi(netdev);
4269 /* turn on all-multi mode if wake on multicast is enabled */
4270 if(adapter->wol & E1000_WUFC_MC) {
4271 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4272 rctl |= E1000_RCTL_MPE;
4273 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4276 if(adapter->hw.mac_type >= e1000_82540) {
4277 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4278 /* advertise wake from D3Cold */
4279 #define E1000_CTRL_ADVD3WUC 0x00100000
4280 /* phy power management enable */
4281 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4282 ctrl |= E1000_CTRL_ADVD3WUC |
4283 E1000_CTRL_EN_PHY_PWR_MGMT;
4284 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4287 if(adapter->hw.media_type == e1000_media_type_fiber ||
4288 adapter->hw.media_type == e1000_media_type_internal_serdes) {
4289 /* keep the laser running in D3 */
4290 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
4291 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4292 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
4295 /* Allow time for pending master requests to run */
4296 e1000_disable_pciex_master(&adapter->hw);
4298 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
4299 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
4300 pci_enable_wake(pdev, 3, 1);
4301 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
4303 E1000_WRITE_REG(&adapter->hw, WUC, 0);
4304 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
4305 pci_enable_wake(pdev, 3, 0);
4306 pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */
4309 pci_save_state(pdev);
4311 if(adapter->hw.mac_type >= e1000_82540 &&
4312 adapter->hw.media_type == e1000_media_type_copper) {
4313 manc = E1000_READ_REG(&adapter->hw, MANC);
4314 if(manc & E1000_MANC_SMBUS_EN) {
4315 manc |= E1000_MANC_ARP_EN;
4316 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4317 pci_enable_wake(pdev, 3, 1);
4318 pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */
4322 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4323 * would have already happened in close and is redundant. */
4324 e1000_release_hw_control(adapter);
4326 pci_disable_device(pdev);
4327 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4333 e1000_resume(struct pci_dev *pdev)
4335 struct net_device *netdev = pci_get_drvdata(pdev);
4336 struct e1000_adapter *adapter = netdev_priv(netdev);
4337 uint32_t manc, ret_val;
4339 pci_set_power_state(pdev, PCI_D0);
4340 pci_restore_state(pdev);
4341 ret_val = pci_enable_device(pdev);
4342 pci_set_master(pdev);
4344 pci_enable_wake(pdev, PCI_D3hot, 0);
4345 pci_enable_wake(pdev, PCI_D3cold, 0);
4347 e1000_reset(adapter);
4348 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
4350 if(netif_running(netdev))
4353 netif_device_attach(netdev);
4355 if(adapter->hw.mac_type >= e1000_82540 &&
4356 adapter->hw.media_type == e1000_media_type_copper) {
4357 manc = E1000_READ_REG(&adapter->hw, MANC);
4358 manc &= ~(E1000_MANC_ARP_EN);
4359 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4362 /* If the controller is 82573 and f/w is AMT, do not set
4363 * DRV_LOAD until the interface is up. For all other cases,
4364 * let the f/w know that the h/w is now under the control
4366 if (adapter->hw.mac_type != e1000_82573 ||
4367 !e1000_check_mng_mode(&adapter->hw))
4368 e1000_get_hw_control(adapter);
4373 #ifdef CONFIG_NET_POLL_CONTROLLER
4375 * Polling 'interrupt' - used by things like netconsole to send skbs
4376 * without having to re-enable interrupts. It's not called while
4377 * the interrupt routine is executing.
4380 e1000_netpoll(struct net_device *netdev)
4382 struct e1000_adapter *adapter = netdev_priv(netdev);
4383 disable_irq(adapter->pdev->irq);
4384 e1000_intr(adapter->pdev->irq, netdev, NULL);
4385 e1000_clean_tx_irq(adapter, adapter->tx_ring);
4386 enable_irq(adapter->pdev->irq);