1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 #include <net/ip6_checksum.h>
32 char e1000_driver_name[] = "e1000";
33 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
34 #define DRV_VERSION "7.3.20-k3-NAPI"
35 const char e1000_driver_version[] = DRV_VERSION;
36 static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
38 /* e1000_pci_tbl - PCI Device ID Table
40 * Last entry must be all 0s
43 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
45 static struct pci_device_id e1000_pci_tbl[] = {
46 INTEL_E1000_ETHERNET_DEVICE(0x1000),
47 INTEL_E1000_ETHERNET_DEVICE(0x1001),
48 INTEL_E1000_ETHERNET_DEVICE(0x1004),
49 INTEL_E1000_ETHERNET_DEVICE(0x1008),
50 INTEL_E1000_ETHERNET_DEVICE(0x1009),
51 INTEL_E1000_ETHERNET_DEVICE(0x100C),
52 INTEL_E1000_ETHERNET_DEVICE(0x100D),
53 INTEL_E1000_ETHERNET_DEVICE(0x100E),
54 INTEL_E1000_ETHERNET_DEVICE(0x100F),
55 INTEL_E1000_ETHERNET_DEVICE(0x1010),
56 INTEL_E1000_ETHERNET_DEVICE(0x1011),
57 INTEL_E1000_ETHERNET_DEVICE(0x1012),
58 INTEL_E1000_ETHERNET_DEVICE(0x1013),
59 INTEL_E1000_ETHERNET_DEVICE(0x1014),
60 INTEL_E1000_ETHERNET_DEVICE(0x1015),
61 INTEL_E1000_ETHERNET_DEVICE(0x1016),
62 INTEL_E1000_ETHERNET_DEVICE(0x1017),
63 INTEL_E1000_ETHERNET_DEVICE(0x1018),
64 INTEL_E1000_ETHERNET_DEVICE(0x1019),
65 INTEL_E1000_ETHERNET_DEVICE(0x101A),
66 INTEL_E1000_ETHERNET_DEVICE(0x101D),
67 INTEL_E1000_ETHERNET_DEVICE(0x101E),
68 INTEL_E1000_ETHERNET_DEVICE(0x1026),
69 INTEL_E1000_ETHERNET_DEVICE(0x1027),
70 INTEL_E1000_ETHERNET_DEVICE(0x1028),
71 INTEL_E1000_ETHERNET_DEVICE(0x1075),
72 INTEL_E1000_ETHERNET_DEVICE(0x1076),
73 INTEL_E1000_ETHERNET_DEVICE(0x1077),
74 INTEL_E1000_ETHERNET_DEVICE(0x1078),
75 INTEL_E1000_ETHERNET_DEVICE(0x1079),
76 INTEL_E1000_ETHERNET_DEVICE(0x107A),
77 INTEL_E1000_ETHERNET_DEVICE(0x107B),
78 INTEL_E1000_ETHERNET_DEVICE(0x107C),
79 INTEL_E1000_ETHERNET_DEVICE(0x108A),
80 INTEL_E1000_ETHERNET_DEVICE(0x1099),
81 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
82 /* required last entry */
86 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
88 int e1000_up(struct e1000_adapter *adapter);
89 void e1000_down(struct e1000_adapter *adapter);
90 void e1000_reinit_locked(struct e1000_adapter *adapter);
91 void e1000_reset(struct e1000_adapter *adapter);
92 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
93 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
94 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
95 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
96 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
97 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
98 struct e1000_tx_ring *txdr);
99 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
100 struct e1000_rx_ring *rxdr);
101 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
102 struct e1000_tx_ring *tx_ring);
103 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
104 struct e1000_rx_ring *rx_ring);
105 void e1000_update_stats(struct e1000_adapter *adapter);
107 static int e1000_init_module(void);
108 static void e1000_exit_module(void);
109 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
110 static void __devexit e1000_remove(struct pci_dev *pdev);
111 static int e1000_alloc_queues(struct e1000_adapter *adapter);
112 static int e1000_sw_init(struct e1000_adapter *adapter);
113 static int e1000_open(struct net_device *netdev);
114 static int e1000_close(struct net_device *netdev);
115 static void e1000_configure_tx(struct e1000_adapter *adapter);
116 static void e1000_configure_rx(struct e1000_adapter *adapter);
117 static void e1000_setup_rctl(struct e1000_adapter *adapter);
118 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
119 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
120 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
121 struct e1000_tx_ring *tx_ring);
122 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
123 struct e1000_rx_ring *rx_ring);
124 static void e1000_set_rx_mode(struct net_device *netdev);
125 static void e1000_update_phy_info(unsigned long data);
126 static void e1000_watchdog(unsigned long data);
127 static void e1000_82547_tx_fifo_stall(unsigned long data);
128 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
129 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
130 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
131 static int e1000_set_mac(struct net_device *netdev, void *p);
132 static irqreturn_t e1000_intr(int irq, void *data);
133 static irqreturn_t e1000_intr_msi(int irq, void *data);
134 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
135 struct e1000_tx_ring *tx_ring);
136 static int e1000_clean(struct napi_struct *napi, int budget);
137 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
138 struct e1000_rx_ring *rx_ring,
139 int *work_done, int work_to_do);
140 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
141 struct e1000_rx_ring *rx_ring,
143 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
144 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
146 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
147 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
148 static void e1000_tx_timeout(struct net_device *dev);
149 static void e1000_reset_task(struct work_struct *work);
150 static void e1000_smartspeed(struct e1000_adapter *adapter);
151 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
152 struct sk_buff *skb);
154 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
155 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
156 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
157 static void e1000_restore_vlan(struct e1000_adapter *adapter);
159 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
161 static int e1000_resume(struct pci_dev *pdev);
163 static void e1000_shutdown(struct pci_dev *pdev);
165 #ifdef CONFIG_NET_POLL_CONTROLLER
166 /* for netdump / net console */
167 static void e1000_netpoll (struct net_device *netdev);
170 #define COPYBREAK_DEFAULT 256
171 static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
172 module_param(copybreak, uint, 0644);
173 MODULE_PARM_DESC(copybreak,
174 "Maximum size of packet that is copied to a new buffer on receive");
176 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
177 pci_channel_state_t state);
178 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
179 static void e1000_io_resume(struct pci_dev *pdev);
181 static struct pci_error_handlers e1000_err_handler = {
182 .error_detected = e1000_io_error_detected,
183 .slot_reset = e1000_io_slot_reset,
184 .resume = e1000_io_resume,
187 static struct pci_driver e1000_driver = {
188 .name = e1000_driver_name,
189 .id_table = e1000_pci_tbl,
190 .probe = e1000_probe,
191 .remove = __devexit_p(e1000_remove),
193 /* Power Managment Hooks */
194 .suspend = e1000_suspend,
195 .resume = e1000_resume,
197 .shutdown = e1000_shutdown,
198 .err_handler = &e1000_err_handler
201 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
202 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
203 MODULE_LICENSE("GPL");
204 MODULE_VERSION(DRV_VERSION);
206 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
207 module_param(debug, int, 0);
208 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
211 * e1000_init_module - Driver Registration Routine
213 * e1000_init_module is the first routine called when the driver is
214 * loaded. All it does is register with the PCI subsystem.
217 static int __init e1000_init_module(void)
220 printk(KERN_INFO "%s - version %s\n",
221 e1000_driver_string, e1000_driver_version);
223 printk(KERN_INFO "%s\n", e1000_copyright);
225 ret = pci_register_driver(&e1000_driver);
226 if (copybreak != COPYBREAK_DEFAULT) {
228 printk(KERN_INFO "e1000: copybreak disabled\n");
230 printk(KERN_INFO "e1000: copybreak enabled for "
231 "packets <= %u bytes\n", copybreak);
236 module_init(e1000_init_module);
239 * e1000_exit_module - Driver Exit Cleanup Routine
241 * e1000_exit_module is called just before the driver is removed
245 static void __exit e1000_exit_module(void)
247 pci_unregister_driver(&e1000_driver);
250 module_exit(e1000_exit_module);
252 static int e1000_request_irq(struct e1000_adapter *adapter)
254 struct e1000_hw *hw = &adapter->hw;
255 struct net_device *netdev = adapter->netdev;
256 irq_handler_t handler = e1000_intr;
257 int irq_flags = IRQF_SHARED;
260 if (hw->mac_type >= e1000_82571) {
261 adapter->have_msi = !pci_enable_msi(adapter->pdev);
262 if (adapter->have_msi) {
263 handler = e1000_intr_msi;
268 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
271 if (adapter->have_msi)
272 pci_disable_msi(adapter->pdev);
274 "Unable to allocate interrupt Error: %d\n", err);
280 static void e1000_free_irq(struct e1000_adapter *adapter)
282 struct net_device *netdev = adapter->netdev;
284 free_irq(adapter->pdev->irq, netdev);
286 if (adapter->have_msi)
287 pci_disable_msi(adapter->pdev);
291 * e1000_irq_disable - Mask off interrupt generation on the NIC
292 * @adapter: board private structure
295 static void e1000_irq_disable(struct e1000_adapter *adapter)
297 struct e1000_hw *hw = &adapter->hw;
301 synchronize_irq(adapter->pdev->irq);
305 * e1000_irq_enable - Enable default interrupt generation settings
306 * @adapter: board private structure
309 static void e1000_irq_enable(struct e1000_adapter *adapter)
311 struct e1000_hw *hw = &adapter->hw;
313 ew32(IMS, IMS_ENABLE_MASK);
317 static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
319 struct e1000_hw *hw = &adapter->hw;
320 struct net_device *netdev = adapter->netdev;
321 u16 vid = hw->mng_cookie.vlan_id;
322 u16 old_vid = adapter->mng_vlan_id;
323 if (adapter->vlgrp) {
324 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
325 if (hw->mng_cookie.status &
326 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
327 e1000_vlan_rx_add_vid(netdev, vid);
328 adapter->mng_vlan_id = vid;
330 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
332 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
334 !vlan_group_get_device(adapter->vlgrp, old_vid))
335 e1000_vlan_rx_kill_vid(netdev, old_vid);
337 adapter->mng_vlan_id = vid;
342 * e1000_release_hw_control - release control of the h/w to f/w
343 * @adapter: address of board private structure
345 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
346 * For ASF and Pass Through versions of f/w this means that the
347 * driver is no longer loaded. For AMT version (only with 82573) i
348 * of the f/w this means that the network i/f is closed.
352 static void e1000_release_hw_control(struct e1000_adapter *adapter)
356 struct e1000_hw *hw = &adapter->hw;
358 /* Let firmware taken over control of h/w */
359 switch (hw->mac_type) {
362 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
366 case e1000_80003es2lan:
368 ctrl_ext = er32(CTRL_EXT);
369 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
377 * e1000_get_hw_control - get control of the h/w from f/w
378 * @adapter: address of board private structure
380 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
381 * For ASF and Pass Through versions of f/w this means that
382 * the driver is loaded. For AMT version (only with 82573)
383 * of the f/w this means that the network i/f is open.
387 static void e1000_get_hw_control(struct e1000_adapter *adapter)
391 struct e1000_hw *hw = &adapter->hw;
393 /* Let firmware know the driver has taken over */
394 switch (hw->mac_type) {
397 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
401 case e1000_80003es2lan:
403 ctrl_ext = er32(CTRL_EXT);
404 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
411 static void e1000_init_manageability(struct e1000_adapter *adapter)
413 struct e1000_hw *hw = &adapter->hw;
415 if (adapter->en_mng_pt) {
416 u32 manc = er32(MANC);
418 /* disable hardware interception of ARP */
419 manc &= ~(E1000_MANC_ARP_EN);
421 /* enable receiving management packets to the host */
422 /* this will probably generate destination unreachable messages
423 * from the host OS, but the packets will be handled on SMBUS */
424 if (hw->has_manc2h) {
425 u32 manc2h = er32(MANC2H);
427 manc |= E1000_MANC_EN_MNG2HOST;
428 #define E1000_MNG2HOST_PORT_623 (1 << 5)
429 #define E1000_MNG2HOST_PORT_664 (1 << 6)
430 manc2h |= E1000_MNG2HOST_PORT_623;
431 manc2h |= E1000_MNG2HOST_PORT_664;
432 ew32(MANC2H, manc2h);
439 static void e1000_release_manageability(struct e1000_adapter *adapter)
441 struct e1000_hw *hw = &adapter->hw;
443 if (adapter->en_mng_pt) {
444 u32 manc = er32(MANC);
446 /* re-enable hardware interception of ARP */
447 manc |= E1000_MANC_ARP_EN;
450 manc &= ~E1000_MANC_EN_MNG2HOST;
452 /* don't explicitly have to mess with MANC2H since
453 * MANC has an enable disable that gates MANC2H */
460 * e1000_configure - configure the hardware for RX and TX
461 * @adapter = private board structure
463 static void e1000_configure(struct e1000_adapter *adapter)
465 struct net_device *netdev = adapter->netdev;
468 e1000_set_rx_mode(netdev);
470 e1000_restore_vlan(adapter);
471 e1000_init_manageability(adapter);
473 e1000_configure_tx(adapter);
474 e1000_setup_rctl(adapter);
475 e1000_configure_rx(adapter);
476 /* call E1000_DESC_UNUSED which always leaves
477 * at least 1 descriptor unused to make sure
478 * next_to_use != next_to_clean */
479 for (i = 0; i < adapter->num_rx_queues; i++) {
480 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
481 adapter->alloc_rx_buf(adapter, ring,
482 E1000_DESC_UNUSED(ring));
485 adapter->tx_queue_len = netdev->tx_queue_len;
488 int e1000_up(struct e1000_adapter *adapter)
490 struct e1000_hw *hw = &adapter->hw;
492 /* hardware has been reset, we need to reload some things */
493 e1000_configure(adapter);
495 clear_bit(__E1000_DOWN, &adapter->flags);
497 napi_enable(&adapter->napi);
499 e1000_irq_enable(adapter);
501 /* fire a link change interrupt to start the watchdog */
502 ew32(ICS, E1000_ICS_LSC);
507 * e1000_power_up_phy - restore link in case the phy was powered down
508 * @adapter: address of board private structure
510 * The phy may be powered down to save power and turn off link when the
511 * driver is unloaded and wake on lan is not enabled (among others)
512 * *** this routine MUST be followed by a call to e1000_reset ***
516 void e1000_power_up_phy(struct e1000_adapter *adapter)
518 struct e1000_hw *hw = &adapter->hw;
521 /* Just clear the power down bit to wake the phy back up */
522 if (hw->media_type == e1000_media_type_copper) {
523 /* according to the manual, the phy will retain its
524 * settings across a power-down/up cycle */
525 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
526 mii_reg &= ~MII_CR_POWER_DOWN;
527 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
531 static void e1000_power_down_phy(struct e1000_adapter *adapter)
533 struct e1000_hw *hw = &adapter->hw;
535 /* Power down the PHY so no link is implied when interface is down *
536 * The PHY cannot be powered down if any of the following is true *
539 * (c) SoL/IDER session is active */
540 if (!adapter->wol && hw->mac_type >= e1000_82540 &&
541 hw->media_type == e1000_media_type_copper) {
544 switch (hw->mac_type) {
547 case e1000_82545_rev_3:
549 case e1000_82546_rev_3:
551 case e1000_82541_rev_2:
553 case e1000_82547_rev_2:
554 if (er32(MANC) & E1000_MANC_SMBUS_EN)
560 case e1000_80003es2lan:
562 if (e1000_check_mng_mode(hw) ||
563 e1000_check_phy_reset_block(hw))
569 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
570 mii_reg |= MII_CR_POWER_DOWN;
571 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
578 void e1000_down(struct e1000_adapter *adapter)
580 struct net_device *netdev = adapter->netdev;
582 /* signal that we're down so the interrupt handler does not
583 * reschedule our watchdog timer */
584 set_bit(__E1000_DOWN, &adapter->flags);
586 napi_disable(&adapter->napi);
588 e1000_irq_disable(adapter);
590 del_timer_sync(&adapter->tx_fifo_stall_timer);
591 del_timer_sync(&adapter->watchdog_timer);
592 del_timer_sync(&adapter->phy_info_timer);
594 netdev->tx_queue_len = adapter->tx_queue_len;
595 adapter->link_speed = 0;
596 adapter->link_duplex = 0;
597 netif_carrier_off(netdev);
598 netif_stop_queue(netdev);
600 e1000_reset(adapter);
601 e1000_clean_all_tx_rings(adapter);
602 e1000_clean_all_rx_rings(adapter);
605 void e1000_reinit_locked(struct e1000_adapter *adapter)
607 WARN_ON(in_interrupt());
608 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
612 clear_bit(__E1000_RESETTING, &adapter->flags);
615 void e1000_reset(struct e1000_adapter *adapter)
617 struct e1000_hw *hw = &adapter->hw;
618 u32 pba = 0, tx_space, min_tx_space, min_rx_space;
619 u16 fc_high_water_mark = E1000_FC_HIGH_DIFF;
620 bool legacy_pba_adjust = false;
622 /* Repartition Pba for greater than 9k mtu
623 * To take effect CTRL.RST is required.
626 switch (hw->mac_type) {
627 case e1000_82542_rev2_0:
628 case e1000_82542_rev2_1:
633 case e1000_82541_rev_2:
634 legacy_pba_adjust = true;
638 case e1000_82545_rev_3:
640 case e1000_82546_rev_3:
644 case e1000_82547_rev_2:
645 legacy_pba_adjust = true;
650 case e1000_80003es2lan:
658 case e1000_undefined:
663 if (legacy_pba_adjust) {
664 if (adapter->netdev->mtu > E1000_RXBUFFER_8192)
665 pba -= 8; /* allocate more FIFO for Tx */
667 if (hw->mac_type == e1000_82547) {
668 adapter->tx_fifo_head = 0;
669 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
670 adapter->tx_fifo_size =
671 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
672 atomic_set(&adapter->tx_fifo_stall, 0);
674 } else if (hw->max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) {
675 /* adjust PBA for jumbo frames */
678 /* To maintain wire speed transmits, the Tx FIFO should be
679 * large enough to accomodate two full transmit packets,
680 * rounded up to the next 1KB and expressed in KB. Likewise,
681 * the Rx FIFO should be large enough to accomodate at least
682 * one full receive packet and is similarly rounded up and
683 * expressed in KB. */
685 /* upper 16 bits has Tx packet buffer allocation size in KB */
686 tx_space = pba >> 16;
687 /* lower 16 bits has Rx packet buffer allocation size in KB */
689 /* don't include ethernet FCS because hardware appends/strips */
690 min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE +
692 min_tx_space = min_rx_space;
694 min_tx_space = ALIGN(min_tx_space, 1024);
696 min_rx_space = ALIGN(min_rx_space, 1024);
699 /* If current Tx allocation is less than the min Tx FIFO size,
700 * and the min Tx FIFO size is less than the current Rx FIFO
701 * allocation, take space away from current Rx allocation */
702 if (tx_space < min_tx_space &&
703 ((min_tx_space - tx_space) < pba)) {
704 pba = pba - (min_tx_space - tx_space);
706 /* PCI/PCIx hardware has PBA alignment constraints */
707 switch (hw->mac_type) {
708 case e1000_82545 ... e1000_82546_rev_3:
709 pba &= ~(E1000_PBA_8K - 1);
715 /* if short on rx space, rx wins and must trump tx
716 * adjustment or use Early Receive if available */
717 if (pba < min_rx_space) {
718 switch (hw->mac_type) {
720 /* ERT enabled in e1000_configure_rx */
732 /* flow control settings */
733 /* Set the FC high water mark to 90% of the FIFO size.
734 * Required to clear last 3 LSB */
735 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
736 /* We can't use 90% on small FIFOs because the remainder
737 * would be less than 1 full frame. In this case, we size
738 * it to allow at least a full frame above the high water
740 if (pba < E1000_PBA_16K)
741 fc_high_water_mark = (pba * 1024) - 1600;
743 hw->fc_high_water = fc_high_water_mark;
744 hw->fc_low_water = fc_high_water_mark - 8;
745 if (hw->mac_type == e1000_80003es2lan)
746 hw->fc_pause_time = 0xFFFF;
748 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
750 hw->fc = hw->original_fc;
752 /* Allow time for pending master requests to run */
754 if (hw->mac_type >= e1000_82544)
757 if (e1000_init_hw(hw))
758 DPRINTK(PROBE, ERR, "Hardware Error\n");
759 e1000_update_mng_vlan(adapter);
761 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
762 if (hw->mac_type >= e1000_82544 &&
763 hw->mac_type <= e1000_82547_rev_2 &&
765 hw->autoneg_advertised == ADVERTISE_1000_FULL) {
766 u32 ctrl = er32(CTRL);
767 /* clear phy power management bit if we are in gig only mode,
768 * which if enabled will attempt negotiation to 100Mb, which
769 * can cause a loss of link at power off or driver unload */
770 ctrl &= ~E1000_CTRL_SWDPIN3;
774 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
775 ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
777 e1000_reset_adaptive(hw);
778 e1000_phy_get_info(hw, &adapter->phy_info);
780 if (!adapter->smart_power_down &&
781 (hw->mac_type == e1000_82571 ||
782 hw->mac_type == e1000_82572)) {
784 /* speed up time to link by disabling smart power down, ignore
785 * the return value of this function because there is nothing
786 * different we would do if it failed */
787 e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
789 phy_data &= ~IGP02E1000_PM_SPD;
790 e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
794 e1000_release_manageability(adapter);
798 * Dump the eeprom for users having checksum issues
800 static void e1000_dump_eeprom(struct e1000_adapter *adapter)
802 struct net_device *netdev = adapter->netdev;
803 struct ethtool_eeprom eeprom;
804 const struct ethtool_ops *ops = netdev->ethtool_ops;
807 u16 csum_old, csum_new = 0;
809 eeprom.len = ops->get_eeprom_len(netdev);
812 data = kmalloc(eeprom.len, GFP_KERNEL);
814 printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
819 ops->get_eeprom(netdev, &eeprom, data);
821 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
822 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
823 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
824 csum_new += data[i] + (data[i + 1] << 8);
825 csum_new = EEPROM_SUM - csum_new;
827 printk(KERN_ERR "/*********************/\n");
828 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
829 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
831 printk(KERN_ERR "Offset Values\n");
832 printk(KERN_ERR "======== ======\n");
833 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
835 printk(KERN_ERR "Include this output when contacting your support "
837 printk(KERN_ERR "This is not a software error! Something bad "
838 "happened to your hardware or\n");
839 printk(KERN_ERR "EEPROM image. Ignoring this "
840 "problem could result in further problems,\n");
841 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
842 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
843 "which is invalid\n");
844 printk(KERN_ERR "and requires you to set the proper MAC "
845 "address manually before continuing\n");
846 printk(KERN_ERR "to enable this network device.\n");
847 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
848 "to your hardware vendor\n");
849 printk(KERN_ERR "or Intel Customer Support.\n");
850 printk(KERN_ERR "/*********************/\n");
856 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not
857 * @pdev: PCI device information struct
859 * Return true if an adapter needs ioport resources
861 static int e1000_is_need_ioport(struct pci_dev *pdev)
863 switch (pdev->device) {
864 case E1000_DEV_ID_82540EM:
865 case E1000_DEV_ID_82540EM_LOM:
866 case E1000_DEV_ID_82540EP:
867 case E1000_DEV_ID_82540EP_LOM:
868 case E1000_DEV_ID_82540EP_LP:
869 case E1000_DEV_ID_82541EI:
870 case E1000_DEV_ID_82541EI_MOBILE:
871 case E1000_DEV_ID_82541ER:
872 case E1000_DEV_ID_82541ER_LOM:
873 case E1000_DEV_ID_82541GI:
874 case E1000_DEV_ID_82541GI_LF:
875 case E1000_DEV_ID_82541GI_MOBILE:
876 case E1000_DEV_ID_82544EI_COPPER:
877 case E1000_DEV_ID_82544EI_FIBER:
878 case E1000_DEV_ID_82544GC_COPPER:
879 case E1000_DEV_ID_82544GC_LOM:
880 case E1000_DEV_ID_82545EM_COPPER:
881 case E1000_DEV_ID_82545EM_FIBER:
882 case E1000_DEV_ID_82546EB_COPPER:
883 case E1000_DEV_ID_82546EB_FIBER:
884 case E1000_DEV_ID_82546EB_QUAD_COPPER:
892 * e1000_probe - Device Initialization Routine
893 * @pdev: PCI device information struct
894 * @ent: entry in e1000_pci_tbl
896 * Returns 0 on success, negative on failure
898 * e1000_probe initializes an adapter identified by a pci_dev structure.
899 * The OS initialization, configuring of the adapter private structure,
900 * and a hardware reset occur.
902 static int __devinit e1000_probe(struct pci_dev *pdev,
903 const struct pci_device_id *ent)
905 struct net_device *netdev;
906 struct e1000_adapter *adapter;
909 static int cards_found = 0;
910 static int global_quad_port_a = 0; /* global ksp3 port a indication */
911 int i, err, pci_using_dac;
913 u16 eeprom_apme_mask = E1000_EEPROM_APME;
914 int bars, need_ioport;
915 DECLARE_MAC_BUF(mac);
917 /* do not allocate ioport bars when not needed */
918 need_ioport = e1000_is_need_ioport(pdev);
920 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
921 err = pci_enable_device(pdev);
923 bars = pci_select_bars(pdev, IORESOURCE_MEM);
924 err = pci_enable_device(pdev);
929 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) &&
930 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
933 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
935 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
937 E1000_ERR("No usable DMA configuration, "
945 err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
949 pci_set_master(pdev);
952 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
954 goto err_alloc_etherdev;
956 SET_NETDEV_DEV(netdev, &pdev->dev);
958 pci_set_drvdata(pdev, netdev);
959 adapter = netdev_priv(netdev);
960 adapter->netdev = netdev;
961 adapter->pdev = pdev;
962 adapter->msg_enable = (1 << debug) - 1;
963 adapter->bars = bars;
964 adapter->need_ioport = need_ioport;
970 hw->hw_addr = ioremap(pci_resource_start(pdev, BAR_0),
971 pci_resource_len(pdev, BAR_0));
975 if (adapter->need_ioport) {
976 for (i = BAR_1; i <= BAR_5; i++) {
977 if (pci_resource_len(pdev, i) == 0)
979 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
980 hw->io_base = pci_resource_start(pdev, i);
986 netdev->open = &e1000_open;
987 netdev->stop = &e1000_close;
988 netdev->hard_start_xmit = &e1000_xmit_frame;
989 netdev->get_stats = &e1000_get_stats;
990 netdev->set_rx_mode = &e1000_set_rx_mode;
991 netdev->set_mac_address = &e1000_set_mac;
992 netdev->change_mtu = &e1000_change_mtu;
993 netdev->do_ioctl = &e1000_ioctl;
994 e1000_set_ethtool_ops(netdev);
995 netdev->tx_timeout = &e1000_tx_timeout;
996 netdev->watchdog_timeo = 5 * HZ;
997 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
998 netdev->vlan_rx_register = e1000_vlan_rx_register;
999 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
1000 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 netdev->poll_controller = e1000_netpoll;
1004 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
1006 adapter->bd_number = cards_found;
1008 /* setup the private structure */
1010 err = e1000_sw_init(adapter);
1015 /* Flash BAR mapping must happen after e1000_sw_init
1016 * because it depends on mac_type */
1017 if ((hw->mac_type == e1000_ich8lan) &&
1018 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
1020 ioremap(pci_resource_start(pdev, 1),
1021 pci_resource_len(pdev, 1));
1022 if (!hw->flash_address)
1026 if (e1000_check_phy_reset_block(hw))
1027 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
1029 if (hw->mac_type >= e1000_82543) {
1030 netdev->features = NETIF_F_SG |
1032 NETIF_F_HW_VLAN_TX |
1033 NETIF_F_HW_VLAN_RX |
1034 NETIF_F_HW_VLAN_FILTER;
1035 if (hw->mac_type == e1000_ich8lan)
1036 netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
1039 if ((hw->mac_type >= e1000_82544) &&
1040 (hw->mac_type != e1000_82547))
1041 netdev->features |= NETIF_F_TSO;
1043 if (hw->mac_type > e1000_82547_rev_2)
1044 netdev->features |= NETIF_F_TSO6;
1046 netdev->features |= NETIF_F_HIGHDMA;
1048 netdev->features |= NETIF_F_LLTX;
1050 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
1052 /* initialize eeprom parameters */
1053 if (e1000_init_eeprom_params(hw)) {
1054 E1000_ERR("EEPROM initialization failed\n");
1058 /* before reading the EEPROM, reset the controller to
1059 * put the device in a known good starting state */
1063 /* make sure the EEPROM is good */
1064 if (e1000_validate_eeprom_checksum(hw) < 0) {
1065 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
1066 e1000_dump_eeprom(adapter);
1068 * set MAC address to all zeroes to invalidate and temporary
1069 * disable this device for the user. This blocks regular
1070 * traffic while still permitting ethtool ioctls from reaching
1071 * the hardware as well as allowing the user to run the
1072 * interface after manually setting a hw addr using
1075 memset(hw->mac_addr, 0, netdev->addr_len);
1077 /* copy the MAC address out of the EEPROM */
1078 if (e1000_read_mac_addr(hw))
1079 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
1081 /* don't block initalization here due to bad MAC address */
1082 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
1083 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len);
1085 if (!is_valid_ether_addr(netdev->perm_addr))
1086 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
1088 e1000_get_bus_info(hw);
1090 init_timer(&adapter->tx_fifo_stall_timer);
1091 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
1092 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter;
1094 init_timer(&adapter->watchdog_timer);
1095 adapter->watchdog_timer.function = &e1000_watchdog;
1096 adapter->watchdog_timer.data = (unsigned long) adapter;
1098 init_timer(&adapter->phy_info_timer);
1099 adapter->phy_info_timer.function = &e1000_update_phy_info;
1100 adapter->phy_info_timer.data = (unsigned long)adapter;
1102 INIT_WORK(&adapter->reset_task, e1000_reset_task);
1104 e1000_check_options(adapter);
1106 /* Initial Wake on LAN setting
1107 * If APM wake is enabled in the EEPROM,
1108 * enable the ACPI Magic Packet filter
1111 switch (hw->mac_type) {
1112 case e1000_82542_rev2_0:
1113 case e1000_82542_rev2_1:
1117 e1000_read_eeprom(hw,
1118 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
1119 eeprom_apme_mask = E1000_EEPROM_82544_APM;
1122 e1000_read_eeprom(hw,
1123 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
1124 eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
1127 case e1000_82546_rev_3:
1129 case e1000_80003es2lan:
1130 if (er32(STATUS) & E1000_STATUS_FUNC_1){
1131 e1000_read_eeprom(hw,
1132 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
1137 e1000_read_eeprom(hw,
1138 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
1141 if (eeprom_data & eeprom_apme_mask)
1142 adapter->eeprom_wol |= E1000_WUFC_MAG;
1144 /* now that we have the eeprom settings, apply the special cases
1145 * where the eeprom may be wrong or the board simply won't support
1146 * wake on lan on a particular port */
1147 switch (pdev->device) {
1148 case E1000_DEV_ID_82546GB_PCIE:
1149 adapter->eeprom_wol = 0;
1151 case E1000_DEV_ID_82546EB_FIBER:
1152 case E1000_DEV_ID_82546GB_FIBER:
1153 case E1000_DEV_ID_82571EB_FIBER:
1154 /* Wake events only supported on port A for dual fiber
1155 * regardless of eeprom setting */
1156 if (er32(STATUS) & E1000_STATUS_FUNC_1)
1157 adapter->eeprom_wol = 0;
1159 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1160 case E1000_DEV_ID_82571EB_QUAD_COPPER:
1161 case E1000_DEV_ID_82571EB_QUAD_FIBER:
1162 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
1163 case E1000_DEV_ID_82571PT_QUAD_COPPER:
1164 /* if quad port adapter, disable WoL on all but port A */
1165 if (global_quad_port_a != 0)
1166 adapter->eeprom_wol = 0;
1168 adapter->quad_port_a = 1;
1169 /* Reset for multiple quad port adapters */
1170 if (++global_quad_port_a == 4)
1171 global_quad_port_a = 0;
1175 /* initialize the wol settings based on the eeprom settings */
1176 adapter->wol = adapter->eeprom_wol;
1178 /* print bus type/speed/width info */
1179 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
1180 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
1181 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
1182 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
1183 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
1184 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
1185 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
1186 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
1187 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
1188 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
1189 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
1192 printk("%s\n", print_mac(mac, netdev->dev_addr));
1194 if (hw->bus_type == e1000_bus_type_pci_express) {
1195 DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no "
1196 "longer be supported by this driver in the future.\n",
1197 pdev->vendor, pdev->device);
1198 DPRINTK(PROBE, WARNING, "please use the \"e1000e\" "
1199 "driver instead.\n");
1202 /* reset the hardware with the new settings */
1203 e1000_reset(adapter);
1205 /* If the controller is 82573 and f/w is AMT, do not set
1206 * DRV_LOAD until the interface is up. For all other cases,
1207 * let the f/w know that the h/w is now under the control
1209 if (hw->mac_type != e1000_82573 ||
1210 !e1000_check_mng_mode(hw))
1211 e1000_get_hw_control(adapter);
1213 /* tell the stack to leave us alone until e1000_open() is called */
1214 netif_carrier_off(netdev);
1215 netif_stop_queue(netdev);
1217 strcpy(netdev->name, "eth%d");
1218 err = register_netdev(netdev);
1222 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
1228 e1000_release_hw_control(adapter);
1230 if (!e1000_check_phy_reset_block(hw))
1231 e1000_phy_hw_reset(hw);
1233 if (hw->flash_address)
1234 iounmap(hw->flash_address);
1236 for (i = 0; i < adapter->num_rx_queues; i++)
1237 dev_put(&adapter->polling_netdev[i]);
1239 kfree(adapter->tx_ring);
1240 kfree(adapter->rx_ring);
1241 kfree(adapter->polling_netdev);
1243 iounmap(hw->hw_addr);
1245 free_netdev(netdev);
1247 pci_release_selected_regions(pdev, bars);
1250 pci_disable_device(pdev);
1255 * e1000_remove - Device Removal Routine
1256 * @pdev: PCI device information struct
1258 * e1000_remove is called by the PCI subsystem to alert the driver
1259 * that it should release a PCI device. The could be caused by a
1260 * Hot-Plug event, or because the driver is going to be removed from
1264 static void __devexit e1000_remove(struct pci_dev *pdev)
1266 struct net_device *netdev = pci_get_drvdata(pdev);
1267 struct e1000_adapter *adapter = netdev_priv(netdev);
1268 struct e1000_hw *hw = &adapter->hw;
1271 cancel_work_sync(&adapter->reset_task);
1273 e1000_release_manageability(adapter);
1275 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1276 * would have already happened in close and is redundant. */
1277 e1000_release_hw_control(adapter);
1279 for (i = 0; i < adapter->num_rx_queues; i++)
1280 dev_put(&adapter->polling_netdev[i]);
1282 unregister_netdev(netdev);
1284 if (!e1000_check_phy_reset_block(hw))
1285 e1000_phy_hw_reset(hw);
1287 kfree(adapter->tx_ring);
1288 kfree(adapter->rx_ring);
1289 kfree(adapter->polling_netdev);
1291 iounmap(hw->hw_addr);
1292 if (hw->flash_address)
1293 iounmap(hw->flash_address);
1294 pci_release_selected_regions(pdev, adapter->bars);
1296 free_netdev(netdev);
1298 pci_disable_device(pdev);
1302 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1303 * @adapter: board private structure to initialize
1305 * e1000_sw_init initializes the Adapter private data structure.
1306 * Fields are initialized based on PCI device information and
1307 * OS network device settings (MTU size).
1310 static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
1312 struct e1000_hw *hw = &adapter->hw;
1313 struct net_device *netdev = adapter->netdev;
1314 struct pci_dev *pdev = adapter->pdev;
1317 /* PCI config space info */
1319 hw->vendor_id = pdev->vendor;
1320 hw->device_id = pdev->device;
1321 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1322 hw->subsystem_id = pdev->subsystem_device;
1323 hw->revision_id = pdev->revision;
1325 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1327 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1328 hw->max_frame_size = netdev->mtu +
1329 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1330 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1332 /* identify the MAC */
1334 if (e1000_set_mac_type(hw)) {
1335 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1339 switch (hw->mac_type) {
1344 case e1000_82541_rev_2:
1345 case e1000_82547_rev_2:
1346 hw->phy_init_script = 1;
1350 e1000_set_media_type(hw);
1352 hw->wait_autoneg_complete = false;
1353 hw->tbi_compatibility_en = true;
1354 hw->adaptive_ifs = true;
1356 /* Copper options */
1358 if (hw->media_type == e1000_media_type_copper) {
1359 hw->mdix = AUTO_ALL_MODES;
1360 hw->disable_polarity_correction = false;
1361 hw->master_slave = E1000_MASTER_SLAVE;
1364 adapter->num_tx_queues = 1;
1365 adapter->num_rx_queues = 1;
1367 if (e1000_alloc_queues(adapter)) {
1368 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1372 for (i = 0; i < adapter->num_rx_queues; i++) {
1373 adapter->polling_netdev[i].priv = adapter;
1374 dev_hold(&adapter->polling_netdev[i]);
1375 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
1377 spin_lock_init(&adapter->tx_queue_lock);
1379 /* Explicitly disable IRQ since the NIC can be in any state. */
1380 e1000_irq_disable(adapter);
1382 spin_lock_init(&adapter->stats_lock);
1384 set_bit(__E1000_DOWN, &adapter->flags);
1390 * e1000_alloc_queues - Allocate memory for all rings
1391 * @adapter: board private structure to initialize
1393 * We allocate one ring per queue at run-time since we don't know the
1394 * number of queues at compile-time. The polling_netdev array is
1395 * intended for Multiqueue, but should work fine with a single queue.
1398 static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
1400 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
1401 sizeof(struct e1000_tx_ring), GFP_KERNEL);
1402 if (!adapter->tx_ring)
1405 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
1406 sizeof(struct e1000_rx_ring), GFP_KERNEL);
1407 if (!adapter->rx_ring) {
1408 kfree(adapter->tx_ring);
1412 adapter->polling_netdev = kcalloc(adapter->num_rx_queues,
1413 sizeof(struct net_device),
1415 if (!adapter->polling_netdev) {
1416 kfree(adapter->tx_ring);
1417 kfree(adapter->rx_ring);
1421 return E1000_SUCCESS;
1425 * e1000_open - Called when a network interface is made active
1426 * @netdev: network interface device structure
1428 * Returns 0 on success, negative value on failure
1430 * The open entry point is called when a network interface is made
1431 * active by the system (IFF_UP). At this point all resources needed
1432 * for transmit and receive operations are allocated, the interrupt
1433 * handler is registered with the OS, the watchdog timer is started,
1434 * and the stack is notified that the interface is ready.
1437 static int e1000_open(struct net_device *netdev)
1439 struct e1000_adapter *adapter = netdev_priv(netdev);
1440 struct e1000_hw *hw = &adapter->hw;
1443 /* disallow open during test */
1444 if (test_bit(__E1000_TESTING, &adapter->flags))
1447 /* allocate transmit descriptors */
1448 err = e1000_setup_all_tx_resources(adapter);
1452 /* allocate receive descriptors */
1453 err = e1000_setup_all_rx_resources(adapter);
1457 e1000_power_up_phy(adapter);
1459 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1460 if ((hw->mng_cookie.status &
1461 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1462 e1000_update_mng_vlan(adapter);
1465 /* If AMT is enabled, let the firmware know that the network
1466 * interface is now open */
1467 if (hw->mac_type == e1000_82573 &&
1468 e1000_check_mng_mode(hw))
1469 e1000_get_hw_control(adapter);
1471 /* before we allocate an interrupt, we must be ready to handle it.
1472 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1473 * as soon as we call pci_request_irq, so we have to setup our
1474 * clean_rx handler before we do so. */
1475 e1000_configure(adapter);
1477 err = e1000_request_irq(adapter);
1481 /* From here on the code is the same as e1000_up() */
1482 clear_bit(__E1000_DOWN, &adapter->flags);
1484 napi_enable(&adapter->napi);
1486 e1000_irq_enable(adapter);
1488 netif_start_queue(netdev);
1490 /* fire a link status change interrupt to start the watchdog */
1491 ew32(ICS, E1000_ICS_LSC);
1493 return E1000_SUCCESS;
1496 e1000_release_hw_control(adapter);
1497 e1000_power_down_phy(adapter);
1498 e1000_free_all_rx_resources(adapter);
1500 e1000_free_all_tx_resources(adapter);
1502 e1000_reset(adapter);
1508 * e1000_close - Disables a network interface
1509 * @netdev: network interface device structure
1511 * Returns 0, this is not allowed to fail
1513 * The close entry point is called when an interface is de-activated
1514 * by the OS. The hardware is still under the drivers control, but
1515 * needs to be disabled. A global MAC reset is issued to stop the
1516 * hardware, and all transmit and receive resources are freed.
1519 static int e1000_close(struct net_device *netdev)
1521 struct e1000_adapter *adapter = netdev_priv(netdev);
1522 struct e1000_hw *hw = &adapter->hw;
1524 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1525 e1000_down(adapter);
1526 e1000_power_down_phy(adapter);
1527 e1000_free_irq(adapter);
1529 e1000_free_all_tx_resources(adapter);
1530 e1000_free_all_rx_resources(adapter);
1532 /* kill manageability vlan ID if supported, but not if a vlan with
1533 * the same ID is registered on the host OS (let 8021q kill it) */
1534 if ((hw->mng_cookie.status &
1535 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1537 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
1538 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1541 /* If AMT is enabled, let the firmware know that the network
1542 * interface is now closed */
1543 if (hw->mac_type == e1000_82573 &&
1544 e1000_check_mng_mode(hw))
1545 e1000_release_hw_control(adapter);
1551 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1552 * @adapter: address of board private structure
1553 * @start: address of beginning of memory
1554 * @len: length of memory
1556 static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
1559 struct e1000_hw *hw = &adapter->hw;
1560 unsigned long begin = (unsigned long)start;
1561 unsigned long end = begin + len;
1563 /* First rev 82545 and 82546 need to not allow any memory
1564 * write location to cross 64k boundary due to errata 23 */
1565 if (hw->mac_type == e1000_82545 ||
1566 hw->mac_type == e1000_82546) {
1567 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
1574 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1575 * @adapter: board private structure
1576 * @txdr: tx descriptor ring (for a specific queue) to setup
1578 * Return 0 on success, negative on failure
1581 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
1582 struct e1000_tx_ring *txdr)
1584 struct pci_dev *pdev = adapter->pdev;
1587 size = sizeof(struct e1000_buffer) * txdr->count;
1588 txdr->buffer_info = vmalloc(size);
1589 if (!txdr->buffer_info) {
1591 "Unable to allocate memory for the transmit descriptor ring\n");
1594 memset(txdr->buffer_info, 0, size);
1596 /* round up to nearest 4K */
1598 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1599 txdr->size = ALIGN(txdr->size, 4096);
1601 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1604 vfree(txdr->buffer_info);
1606 "Unable to allocate memory for the transmit descriptor ring\n");
1610 /* Fix for errata 23, can't cross 64kB boundary */
1611 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1612 void *olddesc = txdr->desc;
1613 dma_addr_t olddma = txdr->dma;
1614 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1615 "at %p\n", txdr->size, txdr->desc);
1616 /* Try again, without freeing the previous */
1617 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1618 /* Failed allocation, critical failure */
1620 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1621 goto setup_tx_desc_die;
1624 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1626 pci_free_consistent(pdev, txdr->size, txdr->desc,
1628 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1630 "Unable to allocate aligned memory "
1631 "for the transmit descriptor ring\n");
1632 vfree(txdr->buffer_info);
1635 /* Free old allocation, new allocation was successful */
1636 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1639 memset(txdr->desc, 0, txdr->size);
1641 txdr->next_to_use = 0;
1642 txdr->next_to_clean = 0;
1643 spin_lock_init(&txdr->tx_lock);
1649 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1650 * (Descriptors) for all queues
1651 * @adapter: board private structure
1653 * Return 0 on success, negative on failure
1656 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1660 for (i = 0; i < adapter->num_tx_queues; i++) {
1661 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1664 "Allocation for Tx Queue %u failed\n", i);
1665 for (i-- ; i >= 0; i--)
1666 e1000_free_tx_resources(adapter,
1667 &adapter->tx_ring[i]);
1676 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1677 * @adapter: board private structure
1679 * Configure the Tx unit of the MAC after a reset.
1682 static void e1000_configure_tx(struct e1000_adapter *adapter)
1685 struct e1000_hw *hw = &adapter->hw;
1686 u32 tdlen, tctl, tipg, tarc;
1689 /* Setup the HW Tx Head and Tail descriptor pointers */
1691 switch (adapter->num_tx_queues) {
1694 tdba = adapter->tx_ring[0].dma;
1695 tdlen = adapter->tx_ring[0].count *
1696 sizeof(struct e1000_tx_desc);
1698 ew32(TDBAH, (tdba >> 32));
1699 ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
1702 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
1703 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
1707 /* Set the default values for the Tx Inter Packet Gap timer */
1708 if (hw->mac_type <= e1000_82547_rev_2 &&
1709 (hw->media_type == e1000_media_type_fiber ||
1710 hw->media_type == e1000_media_type_internal_serdes))
1711 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1713 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1715 switch (hw->mac_type) {
1716 case e1000_82542_rev2_0:
1717 case e1000_82542_rev2_1:
1718 tipg = DEFAULT_82542_TIPG_IPGT;
1719 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1720 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1722 case e1000_80003es2lan:
1723 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1724 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
1727 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1728 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1731 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1732 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1735 /* Set the Tx Interrupt Delay register */
1737 ew32(TIDV, adapter->tx_int_delay);
1738 if (hw->mac_type >= e1000_82540)
1739 ew32(TADV, adapter->tx_abs_int_delay);
1741 /* Program the Transmit Control Register */
1744 tctl &= ~E1000_TCTL_CT;
1745 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1746 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1748 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1750 /* set the speed mode bit, we'll clear it if we're not at
1751 * gigabit link later */
1754 } else if (hw->mac_type == e1000_80003es2lan) {
1763 e1000_config_collision_dist(hw);
1765 /* Setup Transmit Descriptor Settings for eop descriptor */
1766 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1768 /* only set IDE if we are delaying interrupts using the timers */
1769 if (adapter->tx_int_delay)
1770 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1772 if (hw->mac_type < e1000_82543)
1773 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1775 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1777 /* Cache if we're 82544 running in PCI-X because we'll
1778 * need this to apply a workaround later in the send path. */
1779 if (hw->mac_type == e1000_82544 &&
1780 hw->bus_type == e1000_bus_type_pcix)
1781 adapter->pcix_82544 = 1;
1788 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1789 * @adapter: board private structure
1790 * @rxdr: rx descriptor ring (for a specific queue) to setup
1792 * Returns 0 on success, negative on failure
1795 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
1796 struct e1000_rx_ring *rxdr)
1798 struct e1000_hw *hw = &adapter->hw;
1799 struct pci_dev *pdev = adapter->pdev;
1802 size = sizeof(struct e1000_buffer) * rxdr->count;
1803 rxdr->buffer_info = vmalloc(size);
1804 if (!rxdr->buffer_info) {
1806 "Unable to allocate memory for the receive descriptor ring\n");
1809 memset(rxdr->buffer_info, 0, size);
1811 if (hw->mac_type <= e1000_82547_rev_2)
1812 desc_len = sizeof(struct e1000_rx_desc);
1814 desc_len = sizeof(union e1000_rx_desc_packet_split);
1816 /* Round up to nearest 4K */
1818 rxdr->size = rxdr->count * desc_len;
1819 rxdr->size = ALIGN(rxdr->size, 4096);
1821 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1825 "Unable to allocate memory for the receive descriptor ring\n");
1827 vfree(rxdr->buffer_info);
1831 /* Fix for errata 23, can't cross 64kB boundary */
1832 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1833 void *olddesc = rxdr->desc;
1834 dma_addr_t olddma = rxdr->dma;
1835 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1836 "at %p\n", rxdr->size, rxdr->desc);
1837 /* Try again, without freeing the previous */
1838 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1839 /* Failed allocation, critical failure */
1841 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1843 "Unable to allocate memory "
1844 "for the receive descriptor ring\n");
1845 goto setup_rx_desc_die;
1848 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1850 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1852 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1854 "Unable to allocate aligned memory "
1855 "for the receive descriptor ring\n");
1856 goto setup_rx_desc_die;
1858 /* Free old allocation, new allocation was successful */
1859 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1862 memset(rxdr->desc, 0, rxdr->size);
1864 rxdr->next_to_clean = 0;
1865 rxdr->next_to_use = 0;
1871 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1872 * (Descriptors) for all queues
1873 * @adapter: board private structure
1875 * Return 0 on success, negative on failure
1878 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1882 for (i = 0; i < adapter->num_rx_queues; i++) {
1883 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1886 "Allocation for Rx Queue %u failed\n", i);
1887 for (i-- ; i >= 0; i--)
1888 e1000_free_rx_resources(adapter,
1889 &adapter->rx_ring[i]);
1898 * e1000_setup_rctl - configure the receive control registers
1899 * @adapter: Board private structure
1901 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1902 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1903 static void e1000_setup_rctl(struct e1000_adapter *adapter)
1905 struct e1000_hw *hw = &adapter->hw;
1910 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1912 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1913 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1914 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
1916 if (hw->tbi_compatibility_on == 1)
1917 rctl |= E1000_RCTL_SBP;
1919 rctl &= ~E1000_RCTL_SBP;
1921 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1922 rctl &= ~E1000_RCTL_LPE;
1924 rctl |= E1000_RCTL_LPE;
1926 /* Setup buffer sizes */
1927 rctl &= ~E1000_RCTL_SZ_4096;
1928 rctl |= E1000_RCTL_BSEX;
1929 switch (adapter->rx_buffer_len) {
1930 case E1000_RXBUFFER_256:
1931 rctl |= E1000_RCTL_SZ_256;
1932 rctl &= ~E1000_RCTL_BSEX;
1934 case E1000_RXBUFFER_512:
1935 rctl |= E1000_RCTL_SZ_512;
1936 rctl &= ~E1000_RCTL_BSEX;
1938 case E1000_RXBUFFER_1024:
1939 rctl |= E1000_RCTL_SZ_1024;
1940 rctl &= ~E1000_RCTL_BSEX;
1942 case E1000_RXBUFFER_2048:
1944 rctl |= E1000_RCTL_SZ_2048;
1945 rctl &= ~E1000_RCTL_BSEX;
1947 case E1000_RXBUFFER_4096:
1948 rctl |= E1000_RCTL_SZ_4096;
1950 case E1000_RXBUFFER_8192:
1951 rctl |= E1000_RCTL_SZ_8192;
1953 case E1000_RXBUFFER_16384:
1954 rctl |= E1000_RCTL_SZ_16384;
1962 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1963 * @adapter: board private structure
1965 * Configure the Rx unit of the MAC after a reset.
1968 static void e1000_configure_rx(struct e1000_adapter *adapter)
1971 struct e1000_hw *hw = &adapter->hw;
1972 u32 rdlen, rctl, rxcsum, ctrl_ext;
1974 rdlen = adapter->rx_ring[0].count *
1975 sizeof(struct e1000_rx_desc);
1976 adapter->clean_rx = e1000_clean_rx_irq;
1977 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1979 /* disable receives while setting up the descriptors */
1981 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1983 /* set the Receive Delay Timer Register */
1984 ew32(RDTR, adapter->rx_int_delay);
1986 if (hw->mac_type >= e1000_82540) {
1987 ew32(RADV, adapter->rx_abs_int_delay);
1988 if (adapter->itr_setting != 0)
1989 ew32(ITR, 1000000000 / (adapter->itr * 256));
1992 if (hw->mac_type >= e1000_82571) {
1993 ctrl_ext = er32(CTRL_EXT);
1994 /* Reset delay timers after every interrupt */
1995 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
1996 /* Auto-Mask interrupts upon ICR access */
1997 ctrl_ext |= E1000_CTRL_EXT_IAME;
1998 ew32(IAM, 0xffffffff);
1999 ew32(CTRL_EXT, ctrl_ext);
2000 E1000_WRITE_FLUSH();
2003 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2004 * the Base and Length of the Rx Descriptor Ring */
2005 switch (adapter->num_rx_queues) {
2008 rdba = adapter->rx_ring[0].dma;
2010 ew32(RDBAH, (rdba >> 32));
2011 ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
2014 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
2015 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
2019 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2020 if (hw->mac_type >= e1000_82543) {
2021 rxcsum = er32(RXCSUM);
2022 if (adapter->rx_csum)
2023 rxcsum |= E1000_RXCSUM_TUOFL;
2025 /* don't need to clear IPPCSE as it defaults to 0 */
2026 rxcsum &= ~E1000_RXCSUM_TUOFL;
2027 ew32(RXCSUM, rxcsum);
2030 /* Enable Receives */
2035 * e1000_free_tx_resources - Free Tx Resources per Queue
2036 * @adapter: board private structure
2037 * @tx_ring: Tx descriptor ring for a specific queue
2039 * Free all transmit software resources
2042 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
2043 struct e1000_tx_ring *tx_ring)
2045 struct pci_dev *pdev = adapter->pdev;
2047 e1000_clean_tx_ring(adapter, tx_ring);
2049 vfree(tx_ring->buffer_info);
2050 tx_ring->buffer_info = NULL;
2052 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
2054 tx_ring->desc = NULL;
2058 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2059 * @adapter: board private structure
2061 * Free all transmit software resources
2064 void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
2068 for (i = 0; i < adapter->num_tx_queues; i++)
2069 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
2072 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
2073 struct e1000_buffer *buffer_info)
2075 if (buffer_info->dma) {
2076 pci_unmap_page(adapter->pdev,
2078 buffer_info->length,
2080 buffer_info->dma = 0;
2082 if (buffer_info->skb) {
2083 dev_kfree_skb_any(buffer_info->skb);
2084 buffer_info->skb = NULL;
2086 /* buffer_info must be completely set up in the transmit path */
2090 * e1000_clean_tx_ring - Free Tx Buffers
2091 * @adapter: board private structure
2092 * @tx_ring: ring to be cleaned
2095 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
2096 struct e1000_tx_ring *tx_ring)
2098 struct e1000_hw *hw = &adapter->hw;
2099 struct e1000_buffer *buffer_info;
2103 /* Free all the Tx ring sk_buffs */
2105 for (i = 0; i < tx_ring->count; i++) {
2106 buffer_info = &tx_ring->buffer_info[i];
2107 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
2110 size = sizeof(struct e1000_buffer) * tx_ring->count;
2111 memset(tx_ring->buffer_info, 0, size);
2113 /* Zero out the descriptor ring */
2115 memset(tx_ring->desc, 0, tx_ring->size);
2117 tx_ring->next_to_use = 0;
2118 tx_ring->next_to_clean = 0;
2119 tx_ring->last_tx_tso = 0;
2121 writel(0, hw->hw_addr + tx_ring->tdh);
2122 writel(0, hw->hw_addr + tx_ring->tdt);
2126 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2127 * @adapter: board private structure
2130 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
2134 for (i = 0; i < adapter->num_tx_queues; i++)
2135 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
2139 * e1000_free_rx_resources - Free Rx Resources
2140 * @adapter: board private structure
2141 * @rx_ring: ring to clean the resources from
2143 * Free all receive software resources
2146 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
2147 struct e1000_rx_ring *rx_ring)
2149 struct pci_dev *pdev = adapter->pdev;
2151 e1000_clean_rx_ring(adapter, rx_ring);
2153 vfree(rx_ring->buffer_info);
2154 rx_ring->buffer_info = NULL;
2156 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
2158 rx_ring->desc = NULL;
2162 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2163 * @adapter: board private structure
2165 * Free all receive software resources
2168 void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
2172 for (i = 0; i < adapter->num_rx_queues; i++)
2173 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
2177 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2178 * @adapter: board private structure
2179 * @rx_ring: ring to free buffers from
2182 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
2183 struct e1000_rx_ring *rx_ring)
2185 struct e1000_hw *hw = &adapter->hw;
2186 struct e1000_buffer *buffer_info;
2187 struct pci_dev *pdev = adapter->pdev;
2191 /* Free all the Rx ring sk_buffs */
2192 for (i = 0; i < rx_ring->count; i++) {
2193 buffer_info = &rx_ring->buffer_info[i];
2194 if (buffer_info->skb) {
2195 pci_unmap_single(pdev,
2197 buffer_info->length,
2198 PCI_DMA_FROMDEVICE);
2200 dev_kfree_skb(buffer_info->skb);
2201 buffer_info->skb = NULL;
2205 size = sizeof(struct e1000_buffer) * rx_ring->count;
2206 memset(rx_ring->buffer_info, 0, size);
2208 /* Zero out the descriptor ring */
2210 memset(rx_ring->desc, 0, rx_ring->size);
2212 rx_ring->next_to_clean = 0;
2213 rx_ring->next_to_use = 0;
2215 writel(0, hw->hw_addr + rx_ring->rdh);
2216 writel(0, hw->hw_addr + rx_ring->rdt);
2220 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2221 * @adapter: board private structure
2224 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2228 for (i = 0; i < adapter->num_rx_queues; i++)
2229 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2232 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2233 * and memory write and invalidate disabled for certain operations
2235 static void e1000_enter_82542_rst(struct e1000_adapter *adapter)
2237 struct e1000_hw *hw = &adapter->hw;
2238 struct net_device *netdev = adapter->netdev;
2241 e1000_pci_clear_mwi(hw);
2244 rctl |= E1000_RCTL_RST;
2246 E1000_WRITE_FLUSH();
2249 if (netif_running(netdev))
2250 e1000_clean_all_rx_rings(adapter);
2253 static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
2255 struct e1000_hw *hw = &adapter->hw;
2256 struct net_device *netdev = adapter->netdev;
2260 rctl &= ~E1000_RCTL_RST;
2262 E1000_WRITE_FLUSH();
2265 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
2266 e1000_pci_set_mwi(hw);
2268 if (netif_running(netdev)) {
2269 /* No need to loop, because 82542 supports only 1 queue */
2270 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2271 e1000_configure_rx(adapter);
2272 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2277 * e1000_set_mac - Change the Ethernet Address of the NIC
2278 * @netdev: network interface device structure
2279 * @p: pointer to an address structure
2281 * Returns 0 on success, negative on failure
2284 static int e1000_set_mac(struct net_device *netdev, void *p)
2286 struct e1000_adapter *adapter = netdev_priv(netdev);
2287 struct e1000_hw *hw = &adapter->hw;
2288 struct sockaddr *addr = p;
2290 if (!is_valid_ether_addr(addr->sa_data))
2291 return -EADDRNOTAVAIL;
2293 /* 82542 2.0 needs to be in reset to write receive address registers */
2295 if (hw->mac_type == e1000_82542_rev2_0)
2296 e1000_enter_82542_rst(adapter);
2298 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2299 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
2301 e1000_rar_set(hw, hw->mac_addr, 0);
2303 /* With 82571 controllers, LAA may be overwritten (with the default)
2304 * due to controller reset from the other port. */
2305 if (hw->mac_type == e1000_82571) {
2306 /* activate the work around */
2307 hw->laa_is_present = 1;
2309 /* Hold a copy of the LAA in RAR[14] This is done so that
2310 * between the time RAR[0] gets clobbered and the time it
2311 * gets fixed (in e1000_watchdog), the actual LAA is in one
2312 * of the RARs and no incoming packets directed to this port
2313 * are dropped. Eventaully the LAA will be in RAR[0] and
2315 e1000_rar_set(hw, hw->mac_addr,
2316 E1000_RAR_ENTRIES - 1);
2319 if (hw->mac_type == e1000_82542_rev2_0)
2320 e1000_leave_82542_rst(adapter);
2326 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2327 * @netdev: network interface device structure
2329 * The set_rx_mode entry point is called whenever the unicast or multicast
2330 * address lists or the network interface flags are updated. This routine is
2331 * responsible for configuring the hardware for proper unicast, multicast,
2332 * promiscuous mode, and all-multi behavior.
2335 static void e1000_set_rx_mode(struct net_device *netdev)
2337 struct e1000_adapter *adapter = netdev_priv(netdev);
2338 struct e1000_hw *hw = &adapter->hw;
2339 struct dev_addr_list *uc_ptr;
2340 struct dev_addr_list *mc_ptr;
2343 int i, rar_entries = E1000_RAR_ENTRIES;
2344 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
2345 E1000_NUM_MTA_REGISTERS_ICH8LAN :
2346 E1000_NUM_MTA_REGISTERS;
2348 if (hw->mac_type == e1000_ich8lan)
2349 rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
2351 /* reserve RAR[14] for LAA over-write work-around */
2352 if (hw->mac_type == e1000_82571)
2355 /* Check for Promiscuous and All Multicast modes */
2359 if (netdev->flags & IFF_PROMISC) {
2360 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2361 rctl &= ~E1000_RCTL_VFE;
2363 if (netdev->flags & IFF_ALLMULTI) {
2364 rctl |= E1000_RCTL_MPE;
2366 rctl &= ~E1000_RCTL_MPE;
2368 if (adapter->hw.mac_type != e1000_ich8lan)
2369 rctl |= E1000_RCTL_VFE;
2373 if (netdev->uc_count > rar_entries - 1) {
2374 rctl |= E1000_RCTL_UPE;
2375 } else if (!(netdev->flags & IFF_PROMISC)) {
2376 rctl &= ~E1000_RCTL_UPE;
2377 uc_ptr = netdev->uc_list;
2382 /* 82542 2.0 needs to be in reset to write receive address registers */
2384 if (hw->mac_type == e1000_82542_rev2_0)
2385 e1000_enter_82542_rst(adapter);
2387 /* load the first 14 addresses into the exact filters 1-14. Unicast
2388 * addresses take precedence to avoid disabling unicast filtering
2391 * RAR 0 is used for the station MAC adddress
2392 * if there are not 14 addresses, go ahead and clear the filters
2393 * -- with 82571 controllers only 0-13 entries are filled here
2395 mc_ptr = netdev->mc_list;
2397 for (i = 1; i < rar_entries; i++) {
2399 e1000_rar_set(hw, uc_ptr->da_addr, i);
2400 uc_ptr = uc_ptr->next;
2401 } else if (mc_ptr) {
2402 e1000_rar_set(hw, mc_ptr->da_addr, i);
2403 mc_ptr = mc_ptr->next;
2405 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2406 E1000_WRITE_FLUSH();
2407 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2408 E1000_WRITE_FLUSH();
2411 WARN_ON(uc_ptr != NULL);
2413 /* clear the old settings from the multicast hash table */
2415 for (i = 0; i < mta_reg_count; i++) {
2416 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
2417 E1000_WRITE_FLUSH();
2420 /* load any remaining addresses into the hash table */
2422 for (; mc_ptr; mc_ptr = mc_ptr->next) {
2423 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr);
2424 e1000_mta_set(hw, hash_value);
2427 if (hw->mac_type == e1000_82542_rev2_0)
2428 e1000_leave_82542_rst(adapter);
2431 /* Need to wait a few seconds after link up to get diagnostic information from
2434 static void e1000_update_phy_info(unsigned long data)
2436 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2437 struct e1000_hw *hw = &adapter->hw;
2438 e1000_phy_get_info(hw, &adapter->phy_info);
2442 * e1000_82547_tx_fifo_stall - Timer Call-back
2443 * @data: pointer to adapter cast into an unsigned long
2446 static void e1000_82547_tx_fifo_stall(unsigned long data)
2448 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2449 struct e1000_hw *hw = &adapter->hw;
2450 struct net_device *netdev = adapter->netdev;
2453 if (atomic_read(&adapter->tx_fifo_stall)) {
2454 if ((er32(TDT) == er32(TDH)) &&
2455 (er32(TDFT) == er32(TDFH)) &&
2456 (er32(TDFTS) == er32(TDFHS))) {
2458 ew32(TCTL, tctl & ~E1000_TCTL_EN);
2459 ew32(TDFT, adapter->tx_head_addr);
2460 ew32(TDFH, adapter->tx_head_addr);
2461 ew32(TDFTS, adapter->tx_head_addr);
2462 ew32(TDFHS, adapter->tx_head_addr);
2464 E1000_WRITE_FLUSH();
2466 adapter->tx_fifo_head = 0;
2467 atomic_set(&adapter->tx_fifo_stall, 0);
2468 netif_wake_queue(netdev);
2470 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2476 * e1000_watchdog - Timer Call-back
2477 * @data: pointer to adapter cast into an unsigned long
2479 static void e1000_watchdog(unsigned long data)
2481 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
2482 struct e1000_hw *hw = &adapter->hw;
2483 struct net_device *netdev = adapter->netdev;
2484 struct e1000_tx_ring *txdr = adapter->tx_ring;
2488 ret_val = e1000_check_for_link(hw);
2489 if ((ret_val == E1000_ERR_PHY) &&
2490 (hw->phy_type == e1000_phy_igp_3) &&
2491 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
2492 /* See e1000_kumeran_lock_loss_workaround() */
2494 "Gigabit has been disabled, downgrading speed\n");
2497 if (hw->mac_type == e1000_82573) {
2498 e1000_enable_tx_pkt_filtering(hw);
2499 if (adapter->mng_vlan_id != hw->mng_cookie.vlan_id)
2500 e1000_update_mng_vlan(adapter);
2503 if ((hw->media_type == e1000_media_type_internal_serdes) &&
2504 !(er32(TXCW) & E1000_TXCW_ANE))
2505 link = !hw->serdes_link_down;
2507 link = er32(STATUS) & E1000_STATUS_LU;
2510 if (!netif_carrier_ok(netdev)) {
2513 e1000_get_speed_and_duplex(hw,
2514 &adapter->link_speed,
2515 &adapter->link_duplex);
2518 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, "
2519 "Flow Control: %s\n",
2520 adapter->link_speed,
2521 adapter->link_duplex == FULL_DUPLEX ?
2522 "Full Duplex" : "Half Duplex",
2523 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
2524 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
2525 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
2526 E1000_CTRL_TFCE) ? "TX" : "None" )));
2528 /* tweak tx_queue_len according to speed/duplex
2529 * and adjust the timeout factor */
2530 netdev->tx_queue_len = adapter->tx_queue_len;
2531 adapter->tx_timeout_factor = 1;
2532 switch (adapter->link_speed) {
2535 netdev->tx_queue_len = 10;
2536 adapter->tx_timeout_factor = 8;
2540 netdev->tx_queue_len = 100;
2541 /* maybe add some timeout factor ? */
2545 if ((hw->mac_type == e1000_82571 ||
2546 hw->mac_type == e1000_82572) &&
2549 tarc0 = er32(TARC0);
2550 tarc0 &= ~(1 << 21);
2554 /* disable TSO for pcie and 10/100 speeds, to avoid
2555 * some hardware issues */
2556 if (!adapter->tso_force &&
2557 hw->bus_type == e1000_bus_type_pci_express){
2558 switch (adapter->link_speed) {
2562 "10/100 speed: disabling TSO\n");
2563 netdev->features &= ~NETIF_F_TSO;
2564 netdev->features &= ~NETIF_F_TSO6;
2567 netdev->features |= NETIF_F_TSO;
2568 netdev->features |= NETIF_F_TSO6;
2576 /* enable transmits in the hardware, need to do this
2577 * after setting TARC0 */
2579 tctl |= E1000_TCTL_EN;
2582 netif_carrier_on(netdev);
2583 netif_wake_queue(netdev);
2584 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
2585 adapter->smartspeed = 0;
2587 /* make sure the receive unit is started */
2588 if (hw->rx_needs_kicking) {
2589 u32 rctl = er32(RCTL);
2590 ew32(RCTL, rctl | E1000_RCTL_EN);
2594 if (netif_carrier_ok(netdev)) {
2595 adapter->link_speed = 0;
2596 adapter->link_duplex = 0;
2597 DPRINTK(LINK, INFO, "NIC Link is Down\n");
2598 netif_carrier_off(netdev);
2599 netif_stop_queue(netdev);
2600 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
2602 /* 80003ES2LAN workaround--
2603 * For packet buffer work-around on link down event;
2604 * disable receives in the ISR and
2605 * reset device here in the watchdog
2607 if (hw->mac_type == e1000_80003es2lan)
2609 schedule_work(&adapter->reset_task);
2612 e1000_smartspeed(adapter);
2615 e1000_update_stats(adapter);
2617 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2618 adapter->tpt_old = adapter->stats.tpt;
2619 hw->collision_delta = adapter->stats.colc - adapter->colc_old;
2620 adapter->colc_old = adapter->stats.colc;
2622 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2623 adapter->gorcl_old = adapter->stats.gorcl;
2624 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2625 adapter->gotcl_old = adapter->stats.gotcl;
2627 e1000_update_adaptive(hw);
2629 if (!netif_carrier_ok(netdev)) {
2630 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2631 /* We've lost link, so the controller stops DMA,
2632 * but we've got queued Tx work that's never going
2633 * to get done, so reset controller to flush Tx.
2634 * (Do the reset outside of interrupt context). */
2635 adapter->tx_timeout_count++;
2636 schedule_work(&adapter->reset_task);
2640 /* Cause software interrupt to ensure rx ring is cleaned */
2641 ew32(ICS, E1000_ICS_RXDMT0);
2643 /* Force detection of hung controller every watchdog period */
2644 adapter->detect_tx_hung = true;
2646 /* With 82571 controllers, LAA may be overwritten due to controller
2647 * reset from the other port. Set the appropriate LAA in RAR[0] */
2648 if (hw->mac_type == e1000_82571 && hw->laa_is_present)
2649 e1000_rar_set(hw, hw->mac_addr, 0);
2651 /* Reset the timer */
2652 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
2655 enum latency_range {
2659 latency_invalid = 255
2663 * e1000_update_itr - update the dynamic ITR value based on statistics
2664 * Stores a new ITR value based on packets and byte
2665 * counts during the last interrupt. The advantage of per interrupt
2666 * computation is faster updates and more accurate ITR for the current
2667 * traffic pattern. Constants in this function were computed
2668 * based on theoretical maximum wire speed and thresholds were set based
2669 * on testing data as well as attempting to minimize response time
2670 * while increasing bulk throughput.
2671 * this functionality is controlled by the InterruptThrottleRate module
2672 * parameter (see e1000_param.c)
2673 * @adapter: pointer to adapter
2674 * @itr_setting: current adapter->itr
2675 * @packets: the number of packets during this measurement interval
2676 * @bytes: the number of bytes during this measurement interval
2678 static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
2679 u16 itr_setting, int packets, int bytes)
2681 unsigned int retval = itr_setting;
2682 struct e1000_hw *hw = &adapter->hw;
2684 if (unlikely(hw->mac_type < e1000_82540))
2685 goto update_itr_done;
2688 goto update_itr_done;
2690 switch (itr_setting) {
2691 case lowest_latency:
2692 /* jumbo frames get bulk treatment*/
2693 if (bytes/packets > 8000)
2694 retval = bulk_latency;
2695 else if ((packets < 5) && (bytes > 512))
2696 retval = low_latency;
2698 case low_latency: /* 50 usec aka 20000 ints/s */
2699 if (bytes > 10000) {
2700 /* jumbo frames need bulk latency setting */
2701 if (bytes/packets > 8000)
2702 retval = bulk_latency;
2703 else if ((packets < 10) || ((bytes/packets) > 1200))
2704 retval = bulk_latency;
2705 else if ((packets > 35))
2706 retval = lowest_latency;
2707 } else if (bytes/packets > 2000)
2708 retval = bulk_latency;
2709 else if (packets <= 2 && bytes < 512)
2710 retval = lowest_latency;
2712 case bulk_latency: /* 250 usec aka 4000 ints/s */
2713 if (bytes > 25000) {
2715 retval = low_latency;
2716 } else if (bytes < 6000) {
2717 retval = low_latency;
2726 static void e1000_set_itr(struct e1000_adapter *adapter)
2728 struct e1000_hw *hw = &adapter->hw;
2730 u32 new_itr = adapter->itr;
2732 if (unlikely(hw->mac_type < e1000_82540))
2735 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2736 if (unlikely(adapter->link_speed != SPEED_1000)) {
2742 adapter->tx_itr = e1000_update_itr(adapter,
2744 adapter->total_tx_packets,
2745 adapter->total_tx_bytes);
2746 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2747 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2748 adapter->tx_itr = low_latency;
2750 adapter->rx_itr = e1000_update_itr(adapter,
2752 adapter->total_rx_packets,
2753 adapter->total_rx_bytes);
2754 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2755 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2756 adapter->rx_itr = low_latency;
2758 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2760 switch (current_itr) {
2761 /* counts and packets in update_itr are dependent on these numbers */
2762 case lowest_latency:
2766 new_itr = 20000; /* aka hwitr = ~200 */
2776 if (new_itr != adapter->itr) {
2777 /* this attempts to bias the interrupt rate towards Bulk
2778 * by adding intermediate steps when interrupt rate is
2780 new_itr = new_itr > adapter->itr ?
2781 min(adapter->itr + (new_itr >> 2), new_itr) :
2783 adapter->itr = new_itr;
2784 ew32(ITR, 1000000000 / (new_itr * 256));
2790 #define E1000_TX_FLAGS_CSUM 0x00000001
2791 #define E1000_TX_FLAGS_VLAN 0x00000002
2792 #define E1000_TX_FLAGS_TSO 0x00000004
2793 #define E1000_TX_FLAGS_IPV4 0x00000008
2794 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2795 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2797 static int e1000_tso(struct e1000_adapter *adapter,
2798 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
2800 struct e1000_context_desc *context_desc;
2801 struct e1000_buffer *buffer_info;
2804 u16 ipcse = 0, tucse, mss;
2805 u8 ipcss, ipcso, tucss, tucso, hdr_len;
2808 if (skb_is_gso(skb)) {
2809 if (skb_header_cloned(skb)) {
2810 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2815 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
2816 mss = skb_shinfo(skb)->gso_size;
2817 if (skb->protocol == htons(ETH_P_IP)) {
2818 struct iphdr *iph = ip_hdr(skb);
2821 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2825 cmd_length = E1000_TXD_CMD_IP;
2826 ipcse = skb_transport_offset(skb) - 1;
2827 } else if (skb->protocol == htons(ETH_P_IPV6)) {
2828 ipv6_hdr(skb)->payload_len = 0;
2829 tcp_hdr(skb)->check =
2830 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2831 &ipv6_hdr(skb)->daddr,
2835 ipcss = skb_network_offset(skb);
2836 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
2837 tucss = skb_transport_offset(skb);
2838 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
2841 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2842 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2844 i = tx_ring->next_to_use;
2845 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2846 buffer_info = &tx_ring->buffer_info[i];
2848 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2849 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2850 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2851 context_desc->upper_setup.tcp_fields.tucss = tucss;
2852 context_desc->upper_setup.tcp_fields.tucso = tucso;
2853 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2854 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2855 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2856 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2858 buffer_info->time_stamp = jiffies;
2859 buffer_info->next_to_watch = i;
2861 if (++i == tx_ring->count) i = 0;
2862 tx_ring->next_to_use = i;
2869 static bool e1000_tx_csum(struct e1000_adapter *adapter,
2870 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
2872 struct e1000_context_desc *context_desc;
2873 struct e1000_buffer *buffer_info;
2876 u32 cmd_len = E1000_TXD_CMD_DEXT;
2878 if (skb->ip_summed != CHECKSUM_PARTIAL)
2881 switch (skb->protocol) {
2882 case __constant_htons(ETH_P_IP):
2883 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2884 cmd_len |= E1000_TXD_CMD_TCP;
2886 case __constant_htons(ETH_P_IPV6):
2887 /* XXX not handling all IPV6 headers */
2888 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2889 cmd_len |= E1000_TXD_CMD_TCP;
2892 if (unlikely(net_ratelimit()))
2893 DPRINTK(DRV, WARNING,
2894 "checksum_partial proto=%x!\n", skb->protocol);
2898 css = skb_transport_offset(skb);
2900 i = tx_ring->next_to_use;
2901 buffer_info = &tx_ring->buffer_info[i];
2902 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2904 context_desc->lower_setup.ip_config = 0;
2905 context_desc->upper_setup.tcp_fields.tucss = css;
2906 context_desc->upper_setup.tcp_fields.tucso =
2907 css + skb->csum_offset;
2908 context_desc->upper_setup.tcp_fields.tucse = 0;
2909 context_desc->tcp_seg_setup.data = 0;
2910 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
2912 buffer_info->time_stamp = jiffies;
2913 buffer_info->next_to_watch = i;
2915 if (unlikely(++i == tx_ring->count)) i = 0;
2916 tx_ring->next_to_use = i;
2921 #define E1000_MAX_TXD_PWR 12
2922 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2924 static int e1000_tx_map(struct e1000_adapter *adapter,
2925 struct e1000_tx_ring *tx_ring,
2926 struct sk_buff *skb, unsigned int first,
2927 unsigned int max_per_txd, unsigned int nr_frags,
2930 struct e1000_hw *hw = &adapter->hw;
2931 struct e1000_buffer *buffer_info;
2932 unsigned int len = skb->len;
2933 unsigned int offset = 0, size, count = 0, i;
2935 len -= skb->data_len;
2937 i = tx_ring->next_to_use;
2940 buffer_info = &tx_ring->buffer_info[i];
2941 size = min(len, max_per_txd);
2942 /* Workaround for Controller erratum --
2943 * descriptor for non-tso packet in a linear SKB that follows a
2944 * tso gets written back prematurely before the data is fully
2945 * DMA'd to the controller */
2946 if (!skb->data_len && tx_ring->last_tx_tso &&
2948 tx_ring->last_tx_tso = 0;
2952 /* Workaround for premature desc write-backs
2953 * in TSO mode. Append 4-byte sentinel desc */
2954 if (unlikely(mss && !nr_frags && size == len && size > 8))
2956 /* work-around for errata 10 and it applies
2957 * to all controllers in PCI-X mode
2958 * The fix is to make sure that the first descriptor of a
2959 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2961 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
2962 (size > 2015) && count == 0))
2965 /* Workaround for potential 82544 hang in PCI-X. Avoid
2966 * terminating buffers within evenly-aligned dwords. */
2967 if (unlikely(adapter->pcix_82544 &&
2968 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2972 buffer_info->length = size;
2974 pci_map_single(adapter->pdev,
2978 buffer_info->time_stamp = jiffies;
2979 buffer_info->next_to_watch = i;
2984 if (unlikely(++i == tx_ring->count)) i = 0;
2987 for (f = 0; f < nr_frags; f++) {
2988 struct skb_frag_struct *frag;
2990 frag = &skb_shinfo(skb)->frags[f];
2992 offset = frag->page_offset;
2995 buffer_info = &tx_ring->buffer_info[i];
2996 size = min(len, max_per_txd);
2997 /* Workaround for premature desc write-backs
2998 * in TSO mode. Append 4-byte sentinel desc */
2999 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
3001 /* Workaround for potential 82544 hang in PCI-X.
3002 * Avoid terminating buffers within evenly-aligned
3004 if (unlikely(adapter->pcix_82544 &&
3005 !((unsigned long)(frag->page+offset+size-1) & 4) &&
3009 buffer_info->length = size;
3011 pci_map_page(adapter->pdev,
3016 buffer_info->time_stamp = jiffies;
3017 buffer_info->next_to_watch = i;
3022 if (unlikely(++i == tx_ring->count)) i = 0;
3026 i = (i == 0) ? tx_ring->count - 1 : i - 1;
3027 tx_ring->buffer_info[i].skb = skb;
3028 tx_ring->buffer_info[first].next_to_watch = i;
3033 static void e1000_tx_queue(struct e1000_adapter *adapter,
3034 struct e1000_tx_ring *tx_ring, int tx_flags,
3037 struct e1000_hw *hw = &adapter->hw;
3038 struct e1000_tx_desc *tx_desc = NULL;
3039 struct e1000_buffer *buffer_info;
3040 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
3043 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
3044 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3046 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3048 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
3049 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
3052 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
3053 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3054 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3057 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
3058 txd_lower |= E1000_TXD_CMD_VLE;
3059 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3062 i = tx_ring->next_to_use;
3065 buffer_info = &tx_ring->buffer_info[i];
3066 tx_desc = E1000_TX_DESC(*tx_ring, i);
3067 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3068 tx_desc->lower.data =
3069 cpu_to_le32(txd_lower | buffer_info->length);
3070 tx_desc->upper.data = cpu_to_le32(txd_upper);
3071 if (unlikely(++i == tx_ring->count)) i = 0;
3074 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3076 /* Force memory writes to complete before letting h/w
3077 * know there are new descriptors to fetch. (Only
3078 * applicable for weak-ordered memory model archs,
3079 * such as IA-64). */
3082 tx_ring->next_to_use = i;
3083 writel(i, hw->hw_addr + tx_ring->tdt);
3084 /* we need this if more than one processor can write to our tail
3085 * at a time, it syncronizes IO on IA64/Altix systems */
3090 * 82547 workaround to avoid controller hang in half-duplex environment.
3091 * The workaround is to avoid queuing a large packet that would span
3092 * the internal Tx FIFO ring boundary by notifying the stack to resend
3093 * the packet at a later time. This gives the Tx FIFO an opportunity to
3094 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3095 * to the beginning of the Tx FIFO.
3098 #define E1000_FIFO_HDR 0x10
3099 #define E1000_82547_PAD_LEN 0x3E0
3101 static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
3102 struct sk_buff *skb)
3104 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
3105 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
3107 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
3109 if (adapter->link_duplex != HALF_DUPLEX)
3110 goto no_fifo_stall_required;
3112 if (atomic_read(&adapter->tx_fifo_stall))
3115 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
3116 atomic_set(&adapter->tx_fifo_stall, 1);
3120 no_fifo_stall_required:
3121 adapter->tx_fifo_head += skb_fifo_len;
3122 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
3123 adapter->tx_fifo_head -= adapter->tx_fifo_size;
3127 #define MINIMUM_DHCP_PACKET_SIZE 282
3128 static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3129 struct sk_buff *skb)
3131 struct e1000_hw *hw = &adapter->hw;
3133 if (vlan_tx_tag_present(skb)) {
3134 if (!((vlan_tx_tag_get(skb) == hw->mng_cookie.vlan_id) &&
3135 ( hw->mng_cookie.status &
3136 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
3139 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
3140 struct ethhdr *eth = (struct ethhdr *)skb->data;
3141 if ((htons(ETH_P_IP) == eth->h_proto)) {
3142 const struct iphdr *ip =
3143 (struct iphdr *)((u8 *)skb->data+14);
3144 if (IPPROTO_UDP == ip->protocol) {
3145 struct udphdr *udp =
3146 (struct udphdr *)((u8 *)ip +
3148 if (ntohs(udp->dest) == 67) {
3149 offset = (u8 *)udp + 8 - skb->data;
3150 length = skb->len - offset;
3152 return e1000_mng_write_dhcp_info(hw,
3162 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3164 struct e1000_adapter *adapter = netdev_priv(netdev);
3165 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
3167 netif_stop_queue(netdev);
3168 /* Herbert's original patch had:
3169 * smp_mb__after_netif_stop_queue();
3170 * but since that doesn't exist yet, just open code it. */
3173 /* We need to check again in a case another CPU has just
3174 * made room available. */
3175 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
3179 netif_start_queue(netdev);
3180 ++adapter->restart_queue;
3184 static int e1000_maybe_stop_tx(struct net_device *netdev,
3185 struct e1000_tx_ring *tx_ring, int size)
3187 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
3189 return __e1000_maybe_stop_tx(netdev, size);
3192 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3193 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
3195 struct e1000_adapter *adapter = netdev_priv(netdev);
3196 struct e1000_hw *hw = &adapter->hw;
3197 struct e1000_tx_ring *tx_ring;
3198 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
3199 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3200 unsigned int tx_flags = 0;
3201 unsigned int len = skb->len - skb->data_len;
3202 unsigned long flags;
3203 unsigned int nr_frags;
3209 /* This goes back to the question of how to logically map a tx queue
3210 * to a flow. Right now, performance is impacted slightly negatively
3211 * if using multiple tx queues. If the stack breaks away from a
3212 * single qdisc implementation, we can look at this again. */
3213 tx_ring = adapter->tx_ring;
3215 if (unlikely(skb->len <= 0)) {
3216 dev_kfree_skb_any(skb);
3217 return NETDEV_TX_OK;
3220 /* 82571 and newer doesn't need the workaround that limited descriptor
3222 if (hw->mac_type >= e1000_82571)
3225 mss = skb_shinfo(skb)->gso_size;
3226 /* The controller does a simple calculation to
3227 * make sure there is enough room in the FIFO before
3228 * initiating the DMA for each buffer. The calc is:
3229 * 4 = ceil(buffer len/mss). To make sure we don't
3230 * overrun the FIFO, adjust the max buffer len if mss
3234 max_per_txd = min(mss << 2, max_per_txd);
3235 max_txd_pwr = fls(max_per_txd) - 1;
3237 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3238 * points to just header, pull a few bytes of payload from
3239 * frags into skb->data */
3240 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
3241 if (skb->data_len && hdr_len == len) {
3242 switch (hw->mac_type) {
3243 unsigned int pull_size;
3245 /* Make sure we have room to chop off 4 bytes,
3246 * and that the end alignment will work out to
3247 * this hardware's requirements
3248 * NOTE: this is a TSO only workaround
3249 * if end byte alignment not correct move us
3250 * into the next dword */
3251 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4)
3258 pull_size = min((unsigned int)4, skb->data_len);
3259 if (!__pskb_pull_tail(skb, pull_size)) {
3261 "__pskb_pull_tail failed.\n");
3262 dev_kfree_skb_any(skb);
3263 return NETDEV_TX_OK;
3265 len = skb->len - skb->data_len;
3274 /* reserve a descriptor for the offload context */
3275 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
3279 /* Controller Erratum workaround */
3280 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
3283 count += TXD_USE_COUNT(len, max_txd_pwr);
3285 if (adapter->pcix_82544)
3288 /* work-around for errata 10 and it applies to all controllers
3289 * in PCI-X mode, so add one more descriptor to the count
3291 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
3295 nr_frags = skb_shinfo(skb)->nr_frags;
3296 for (f = 0; f < nr_frags; f++)
3297 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3299 if (adapter->pcix_82544)
3303 if (hw->tx_pkt_filtering &&
3304 (hw->mac_type == e1000_82573))
3305 e1000_transfer_dhcp_info(adapter, skb);
3307 if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags))
3308 /* Collision - tell upper layer to requeue */
3309 return NETDEV_TX_LOCKED;
3311 /* need: count + 2 desc gap to keep tail from touching
3312 * head, otherwise try next time */
3313 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) {
3314 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3315 return NETDEV_TX_BUSY;
3318 if (unlikely(hw->mac_type == e1000_82547)) {
3319 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
3320 netif_stop_queue(netdev);
3321 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
3322 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3323 return NETDEV_TX_BUSY;
3327 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
3328 tx_flags |= E1000_TX_FLAGS_VLAN;
3329 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3332 first = tx_ring->next_to_use;
3334 tso = e1000_tso(adapter, tx_ring, skb);
3336 dev_kfree_skb_any(skb);
3337 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3338 return NETDEV_TX_OK;
3342 tx_ring->last_tx_tso = 1;
3343 tx_flags |= E1000_TX_FLAGS_TSO;
3344 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
3345 tx_flags |= E1000_TX_FLAGS_CSUM;
3347 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3348 * 82571 hardware supports TSO capabilities for IPv6 as well...
3349 * no longer assume, we must. */
3350 if (likely(skb->protocol == htons(ETH_P_IP)))
3351 tx_flags |= E1000_TX_FLAGS_IPV4;
3353 e1000_tx_queue(adapter, tx_ring, tx_flags,
3354 e1000_tx_map(adapter, tx_ring, skb, first,
3355 max_per_txd, nr_frags, mss));
3357 netdev->trans_start = jiffies;
3359 /* Make sure there is space in the ring for the next send. */
3360 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
3362 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
3363 return NETDEV_TX_OK;
3367 * e1000_tx_timeout - Respond to a Tx Hang
3368 * @netdev: network interface device structure
3371 static void e1000_tx_timeout(struct net_device *netdev)
3373 struct e1000_adapter *adapter = netdev_priv(netdev);
3375 /* Do the reset outside of interrupt context */
3376 adapter->tx_timeout_count++;
3377 schedule_work(&adapter->reset_task);
3380 static void e1000_reset_task(struct work_struct *work)
3382 struct e1000_adapter *adapter =
3383 container_of(work, struct e1000_adapter, reset_task);
3385 e1000_reinit_locked(adapter);
3389 * e1000_get_stats - Get System Network Statistics
3390 * @netdev: network interface device structure
3392 * Returns the address of the device statistics structure.
3393 * The statistics are actually updated from the timer callback.
3396 static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
3398 struct e1000_adapter *adapter = netdev_priv(netdev);
3400 /* only return the current stats */
3401 return &adapter->net_stats;
3405 * e1000_change_mtu - Change the Maximum Transfer Unit
3406 * @netdev: network interface device structure
3407 * @new_mtu: new value for maximum frame size
3409 * Returns 0 on success, negative on failure
3412 static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
3414 struct e1000_adapter *adapter = netdev_priv(netdev);
3415 struct e1000_hw *hw = &adapter->hw;
3416 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
3417 u16 eeprom_data = 0;
3419 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3420 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3421 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
3425 /* Adapter-specific max frame size limits. */
3426 switch (hw->mac_type) {
3427 case e1000_undefined ... e1000_82542_rev2_1:
3429 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3430 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
3435 /* Jumbo Frames not supported if:
3436 * - this is not an 82573L device
3437 * - ASPM is enabled in any way (0x1A bits 3:2) */
3438 e1000_read_eeprom(hw, EEPROM_INIT_3GIO_3, 1,
3440 if ((hw->device_id != E1000_DEV_ID_82573L) ||
3441 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
3442 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3444 "Jumbo Frames not supported.\n");
3449 /* ERT will be enabled later to enable wire speed receives */
3451 /* fall through to get support */
3454 case e1000_80003es2lan:
3455 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3456 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3457 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
3462 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3466 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3467 * means we reserve 2 more, this pushes us to allocate from the next
3469 * i.e. RXBUFFER_2048 --> size-4096 slab */
3471 if (max_frame <= E1000_RXBUFFER_256)
3472 adapter->rx_buffer_len = E1000_RXBUFFER_256;
3473 else if (max_frame <= E1000_RXBUFFER_512)
3474 adapter->rx_buffer_len = E1000_RXBUFFER_512;
3475 else if (max_frame <= E1000_RXBUFFER_1024)
3476 adapter->rx_buffer_len = E1000_RXBUFFER_1024;
3477 else if (max_frame <= E1000_RXBUFFER_2048)
3478 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3479 else if (max_frame <= E1000_RXBUFFER_4096)
3480 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
3481 else if (max_frame <= E1000_RXBUFFER_8192)
3482 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
3483 else if (max_frame <= E1000_RXBUFFER_16384)
3484 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3486 /* adjust allocation if LPE protects us, and we aren't using SBP */
3487 if (!hw->tbi_compatibility_on &&
3488 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
3489 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3490 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
3492 netdev->mtu = new_mtu;
3493 hw->max_frame_size = max_frame;
3495 if (netif_running(netdev))
3496 e1000_reinit_locked(adapter);
3502 * e1000_update_stats - Update the board statistics counters
3503 * @adapter: board private structure
3506 void e1000_update_stats(struct e1000_adapter *adapter)
3508 struct e1000_hw *hw = &adapter->hw;
3509 struct pci_dev *pdev = adapter->pdev;
3510 unsigned long flags;
3513 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3516 * Prevent stats update while adapter is being reset, or if the pci
3517 * connection is down.
3519 if (adapter->link_speed == 0)
3521 if (pci_channel_offline(pdev))
3524 spin_lock_irqsave(&adapter->stats_lock, flags);
3526 /* these counters are modified from e1000_tbi_adjust_stats,
3527 * called from the interrupt context, so they must only
3528 * be written while holding adapter->stats_lock
3531 adapter->stats.crcerrs += er32(CRCERRS);
3532 adapter->stats.gprc += er32(GPRC);
3533 adapter->stats.gorcl += er32(GORCL);
3534 adapter->stats.gorch += er32(GORCH);
3535 adapter->stats.bprc += er32(BPRC);
3536 adapter->stats.mprc += er32(MPRC);
3537 adapter->stats.roc += er32(ROC);
3539 if (hw->mac_type != e1000_ich8lan) {
3540 adapter->stats.prc64 += er32(PRC64);
3541 adapter->stats.prc127 += er32(PRC127);
3542 adapter->stats.prc255 += er32(PRC255);
3543 adapter->stats.prc511 += er32(PRC511);
3544 adapter->stats.prc1023 += er32(PRC1023);
3545 adapter->stats.prc1522 += er32(PRC1522);
3548 adapter->stats.symerrs += er32(SYMERRS);
3549 adapter->stats.mpc += er32(MPC);
3550 adapter->stats.scc += er32(SCC);
3551 adapter->stats.ecol += er32(ECOL);
3552 adapter->stats.mcc += er32(MCC);
3553 adapter->stats.latecol += er32(LATECOL);
3554 adapter->stats.dc += er32(DC);
3555 adapter->stats.sec += er32(SEC);
3556 adapter->stats.rlec += er32(RLEC);
3557 adapter->stats.xonrxc += er32(XONRXC);
3558 adapter->stats.xontxc += er32(XONTXC);
3559 adapter->stats.xoffrxc += er32(XOFFRXC);
3560 adapter->stats.xofftxc += er32(XOFFTXC);
3561 adapter->stats.fcruc += er32(FCRUC);
3562 adapter->stats.gptc += er32(GPTC);
3563 adapter->stats.gotcl += er32(GOTCL);
3564 adapter->stats.gotch += er32(GOTCH);
3565 adapter->stats.rnbc += er32(RNBC);
3566 adapter->stats.ruc += er32(RUC);
3567 adapter->stats.rfc += er32(RFC);
3568 adapter->stats.rjc += er32(RJC);
3569 adapter->stats.torl += er32(TORL);
3570 adapter->stats.torh += er32(TORH);
3571 adapter->stats.totl += er32(TOTL);
3572 adapter->stats.toth += er32(TOTH);
3573 adapter->stats.tpr += er32(TPR);
3575 if (hw->mac_type != e1000_ich8lan) {
3576 adapter->stats.ptc64 += er32(PTC64);
3577 adapter->stats.ptc127 += er32(PTC127);
3578 adapter->stats.ptc255 += er32(PTC255);
3579 adapter->stats.ptc511 += er32(PTC511);
3580 adapter->stats.ptc1023 += er32(PTC1023);
3581 adapter->stats.ptc1522 += er32(PTC1522);
3584 adapter->stats.mptc += er32(MPTC);
3585 adapter->stats.bptc += er32(BPTC);
3587 /* used for adaptive IFS */
3589 hw->tx_packet_delta = er32(TPT);
3590 adapter->stats.tpt += hw->tx_packet_delta;
3591 hw->collision_delta = er32(COLC);
3592 adapter->stats.colc += hw->collision_delta;
3594 if (hw->mac_type >= e1000_82543) {
3595 adapter->stats.algnerrc += er32(ALGNERRC);
3596 adapter->stats.rxerrc += er32(RXERRC);
3597 adapter->stats.tncrs += er32(TNCRS);
3598 adapter->stats.cexterr += er32(CEXTERR);
3599 adapter->stats.tsctc += er32(TSCTC);
3600 adapter->stats.tsctfc += er32(TSCTFC);
3602 if (hw->mac_type > e1000_82547_rev_2) {
3603 adapter->stats.iac += er32(IAC);
3604 adapter->stats.icrxoc += er32(ICRXOC);
3606 if (hw->mac_type != e1000_ich8lan) {
3607 adapter->stats.icrxptc += er32(ICRXPTC);
3608 adapter->stats.icrxatc += er32(ICRXATC);
3609 adapter->stats.ictxptc += er32(ICTXPTC);
3610 adapter->stats.ictxatc += er32(ICTXATC);
3611 adapter->stats.ictxqec += er32(ICTXQEC);
3612 adapter->stats.ictxqmtc += er32(ICTXQMTC);
3613 adapter->stats.icrxdmtc += er32(ICRXDMTC);
3617 /* Fill out the OS statistics structure */
3618 adapter->net_stats.multicast = adapter->stats.mprc;
3619 adapter->net_stats.collisions = adapter->stats.colc;
3623 /* RLEC on some newer hardware can be incorrect so build
3624 * our own version based on RUC and ROC */
3625 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3626 adapter->stats.crcerrs + adapter->stats.algnerrc +
3627 adapter->stats.ruc + adapter->stats.roc +
3628 adapter->stats.cexterr;
3629 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3630 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
3631 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3632 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3633 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3636 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3637 adapter->net_stats.tx_errors = adapter->stats.txerrc;
3638 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3639 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3640 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3641 if (hw->bad_tx_carr_stats_fd &&
3642 adapter->link_duplex == FULL_DUPLEX) {
3643 adapter->net_stats.tx_carrier_errors = 0;
3644 adapter->stats.tncrs = 0;
3647 /* Tx Dropped needs to be maintained elsewhere */
3650 if (hw->media_type == e1000_media_type_copper) {
3651 if ((adapter->link_speed == SPEED_1000) &&
3652 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3653 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3654 adapter->phy_stats.idle_errors += phy_tmp;
3657 if ((hw->mac_type <= e1000_82546) &&
3658 (hw->phy_type == e1000_phy_m88) &&
3659 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3660 adapter->phy_stats.receive_errors += phy_tmp;
3663 /* Management Stats */
3664 if (hw->has_smbus) {
3665 adapter->stats.mgptc += er32(MGTPTC);
3666 adapter->stats.mgprc += er32(MGTPRC);
3667 adapter->stats.mgpdc += er32(MGTPDC);
3670 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3674 * e1000_intr_msi - Interrupt Handler
3675 * @irq: interrupt number
3676 * @data: pointer to a network interface device structure
3679 static irqreturn_t e1000_intr_msi(int irq, void *data)
3681 struct net_device *netdev = data;
3682 struct e1000_adapter *adapter = netdev_priv(netdev);
3683 struct e1000_hw *hw = &adapter->hw;
3684 u32 icr = er32(ICR);
3686 /* in NAPI mode read ICR disables interrupts using IAM */
3688 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3689 hw->get_link_status = 1;
3690 /* 80003ES2LAN workaround-- For packet buffer work-around on
3691 * link down event; disable receives here in the ISR and reset
3692 * adapter in watchdog */
3693 if (netif_carrier_ok(netdev) &&
3694 (hw->mac_type == e1000_80003es2lan)) {
3695 /* disable receives */
3696 u32 rctl = er32(RCTL);
3697 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3699 /* guard against interrupt when we're going down */
3700 if (!test_bit(__E1000_DOWN, &adapter->flags))
3701 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3704 if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) {
3705 adapter->total_tx_bytes = 0;
3706 adapter->total_tx_packets = 0;
3707 adapter->total_rx_bytes = 0;
3708 adapter->total_rx_packets = 0;
3709 __netif_rx_schedule(netdev, &adapter->napi);
3711 e1000_irq_enable(adapter);
3717 * e1000_intr - Interrupt Handler
3718 * @irq: interrupt number
3719 * @data: pointer to a network interface device structure
3722 static irqreturn_t e1000_intr(int irq, void *data)
3724 struct net_device *netdev = data;
3725 struct e1000_adapter *adapter = netdev_priv(netdev);
3726 struct e1000_hw *hw = &adapter->hw;
3727 u32 rctl, icr = er32(ICR);
3730 return IRQ_NONE; /* Not our interrupt */
3732 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3733 * not set, then the adapter didn't send an interrupt */
3734 if (unlikely(hw->mac_type >= e1000_82571 &&
3735 !(icr & E1000_ICR_INT_ASSERTED)))
3738 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3739 * need for the IMC write */
3741 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3742 hw->get_link_status = 1;
3743 /* 80003ES2LAN workaround--
3744 * For packet buffer work-around on link down event;
3745 * disable receives here in the ISR and
3746 * reset adapter in watchdog
3748 if (netif_carrier_ok(netdev) &&
3749 (hw->mac_type == e1000_80003es2lan)) {
3750 /* disable receives */
3752 ew32(RCTL, rctl & ~E1000_RCTL_EN);
3754 /* guard against interrupt when we're going down */
3755 if (!test_bit(__E1000_DOWN, &adapter->flags))
3756 mod_timer(&adapter->watchdog_timer, jiffies + 1);
3759 if (unlikely(hw->mac_type < e1000_82571)) {
3760 /* disable interrupts, without the synchronize_irq bit */
3762 E1000_WRITE_FLUSH();
3764 if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) {
3765 adapter->total_tx_bytes = 0;
3766 adapter->total_tx_packets = 0;
3767 adapter->total_rx_bytes = 0;
3768 adapter->total_rx_packets = 0;
3769 __netif_rx_schedule(netdev, &adapter->napi);
3771 /* this really should not happen! if it does it is basically a
3772 * bug, but not a hard error, so enable ints and continue */
3773 e1000_irq_enable(adapter);
3779 * e1000_clean - NAPI Rx polling callback
3780 * @adapter: board private structure
3782 static int e1000_clean(struct napi_struct *napi, int budget)
3784 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
3785 struct net_device *poll_dev = adapter->netdev;
3786 int tx_cleaned = 0, work_done = 0;
3788 /* Must NOT use netdev_priv macro here. */
3789 adapter = poll_dev->priv;
3791 /* e1000_clean is called per-cpu. This lock protects
3792 * tx_ring[0] from being cleaned by multiple cpus
3793 * simultaneously. A failure obtaining the lock means
3794 * tx_ring[0] is currently being cleaned anyway. */
3795 if (spin_trylock(&adapter->tx_queue_lock)) {
3796 tx_cleaned = e1000_clean_tx_irq(adapter,
3797 &adapter->tx_ring[0]);
3798 spin_unlock(&adapter->tx_queue_lock);
3801 adapter->clean_rx(adapter, &adapter->rx_ring[0],
3802 &work_done, budget);
3807 /* If budget not fully consumed, exit the polling mode */
3808 if (work_done < budget) {
3809 if (likely(adapter->itr_setting & 3))
3810 e1000_set_itr(adapter);
3811 netif_rx_complete(poll_dev, napi);
3812 e1000_irq_enable(adapter);
3819 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3820 * @adapter: board private structure
3822 static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
3823 struct e1000_tx_ring *tx_ring)
3825 struct e1000_hw *hw = &adapter->hw;
3826 struct net_device *netdev = adapter->netdev;
3827 struct e1000_tx_desc *tx_desc, *eop_desc;
3828 struct e1000_buffer *buffer_info;
3829 unsigned int i, eop;
3830 unsigned int count = 0;
3831 bool cleaned = false;
3832 unsigned int total_tx_bytes=0, total_tx_packets=0;
3834 i = tx_ring->next_to_clean;
3835 eop = tx_ring->buffer_info[i].next_to_watch;
3836 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3838 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
3839 for (cleaned = false; !cleaned; ) {
3840 tx_desc = E1000_TX_DESC(*tx_ring, i);
3841 buffer_info = &tx_ring->buffer_info[i];
3842 cleaned = (i == eop);
3845 struct sk_buff *skb = buffer_info->skb;
3846 unsigned int segs, bytecount;
3847 segs = skb_shinfo(skb)->gso_segs ?: 1;
3848 /* multiply data chunks by size of headers */
3849 bytecount = ((segs - 1) * skb_headlen(skb)) +
3851 total_tx_packets += segs;
3852 total_tx_bytes += bytecount;
3854 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3855 tx_desc->upper.data = 0;
3857 if (unlikely(++i == tx_ring->count)) i = 0;
3860 eop = tx_ring->buffer_info[i].next_to_watch;
3861 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3862 #define E1000_TX_WEIGHT 64
3863 /* weight of a sort for tx, to avoid endless transmit cleanup */
3864 if (count++ == E1000_TX_WEIGHT)
3868 tx_ring->next_to_clean = i;
3870 #define TX_WAKE_THRESHOLD 32
3871 if (unlikely(cleaned && netif_carrier_ok(netdev) &&
3872 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3873 /* Make sure that anybody stopping the queue after this
3874 * sees the new next_to_clean.
3877 if (netif_queue_stopped(netdev)) {
3878 netif_wake_queue(netdev);
3879 ++adapter->restart_queue;
3883 if (adapter->detect_tx_hung) {
3884 /* Detect a transmit hang in hardware, this serializes the
3885 * check with the clearing of time_stamp and movement of i */
3886 adapter->detect_tx_hung = false;
3887 if (tx_ring->buffer_info[eop].dma &&
3888 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3889 (adapter->tx_timeout_factor * HZ))
3890 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
3892 /* detected Tx unit hang */
3893 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3897 " next_to_use <%x>\n"
3898 " next_to_clean <%x>\n"
3899 "buffer_info[next_to_clean]\n"
3900 " time_stamp <%lx>\n"
3901 " next_to_watch <%x>\n"
3903 " next_to_watch.status <%x>\n",
3904 (unsigned long)((tx_ring - adapter->tx_ring) /
3905 sizeof(struct e1000_tx_ring)),
3906 readl(hw->hw_addr + tx_ring->tdh),
3907 readl(hw->hw_addr + tx_ring->tdt),
3908 tx_ring->next_to_use,
3909 tx_ring->next_to_clean,
3910 tx_ring->buffer_info[eop].time_stamp,
3913 eop_desc->upper.fields.status);
3914 netif_stop_queue(netdev);
3917 adapter->total_tx_bytes += total_tx_bytes;
3918 adapter->total_tx_packets += total_tx_packets;
3919 adapter->net_stats.tx_bytes += total_tx_bytes;
3920 adapter->net_stats.tx_packets += total_tx_packets;
3925 * e1000_rx_checksum - Receive Checksum Offload for 82543
3926 * @adapter: board private structure
3927 * @status_err: receive descriptor status and error fields
3928 * @csum: receive descriptor csum field
3929 * @sk_buff: socket buffer with received data
3932 static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
3933 u32 csum, struct sk_buff *skb)
3935 struct e1000_hw *hw = &adapter->hw;
3936 u16 status = (u16)status_err;
3937 u8 errors = (u8)(status_err >> 24);
3938 skb->ip_summed = CHECKSUM_NONE;
3940 /* 82543 or newer only */
3941 if (unlikely(hw->mac_type < e1000_82543)) return;
3942 /* Ignore Checksum bit is set */
3943 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
3944 /* TCP/UDP checksum error bit is set */
3945 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3946 /* let the stack verify checksum errors */
3947 adapter->hw_csum_err++;
3950 /* TCP/UDP Checksum has not been calculated */
3951 if (hw->mac_type <= e1000_82547_rev_2) {
3952 if (!(status & E1000_RXD_STAT_TCPCS))
3955 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
3958 /* It must be a TCP or UDP packet with a valid checksum */
3959 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3960 /* TCP checksum is good */
3961 skb->ip_summed = CHECKSUM_UNNECESSARY;
3962 } else if (hw->mac_type > e1000_82547_rev_2) {
3963 /* IP fragment with UDP payload */
3964 /* Hardware complements the payload checksum, so we undo it
3965 * and then put the value in host order for further stack use.
3967 __sum16 sum = (__force __sum16)htons(csum);
3968 skb->csum = csum_unfold(~sum);
3969 skb->ip_summed = CHECKSUM_COMPLETE;
3971 adapter->hw_csum_good++;
3975 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3976 * @adapter: board private structure
3978 static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
3979 struct e1000_rx_ring *rx_ring,
3980 int *work_done, int work_to_do)
3982 struct e1000_hw *hw = &adapter->hw;
3983 struct net_device *netdev = adapter->netdev;
3984 struct pci_dev *pdev = adapter->pdev;
3985 struct e1000_rx_desc *rx_desc, *next_rxd;
3986 struct e1000_buffer *buffer_info, *next_buffer;
3987 unsigned long flags;
3991 int cleaned_count = 0;
3992 bool cleaned = false;
3993 unsigned int total_rx_bytes=0, total_rx_packets=0;
3995 i = rx_ring->next_to_clean;
3996 rx_desc = E1000_RX_DESC(*rx_ring, i);
3997 buffer_info = &rx_ring->buffer_info[i];
3999 while (rx_desc->status & E1000_RXD_STAT_DD) {
4000 struct sk_buff *skb;
4003 if (*work_done >= work_to_do)
4007 status = rx_desc->status;
4008 skb = buffer_info->skb;
4009 buffer_info->skb = NULL;
4011 prefetch(skb->data - NET_IP_ALIGN);
4013 if (++i == rx_ring->count) i = 0;
4014 next_rxd = E1000_RX_DESC(*rx_ring, i);
4017 next_buffer = &rx_ring->buffer_info[i];
4021 pci_unmap_single(pdev,
4023 buffer_info->length,
4024 PCI_DMA_FROMDEVICE);
4026 length = le16_to_cpu(rx_desc->length);
4028 if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
4029 /* All receives must fit into a single buffer */
4030 E1000_DBG("%s: Receive packet consumed multiple"
4031 " buffers\n", netdev->name);
4033 buffer_info->skb = skb;
4037 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
4038 last_byte = *(skb->data + length - 1);
4039 if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
4041 spin_lock_irqsave(&adapter->stats_lock, flags);
4042 e1000_tbi_adjust_stats(hw, &adapter->stats,
4044 spin_unlock_irqrestore(&adapter->stats_lock,
4049 buffer_info->skb = skb;
4054 /* adjust length to remove Ethernet CRC, this must be
4055 * done after the TBI_ACCEPT workaround above */
4058 /* probably a little skewed due to removing CRC */
4059 total_rx_bytes += length;
4062 /* code added for copybreak, this should improve
4063 * performance for small packets with large amounts
4064 * of reassembly being done in the stack */
4065 if (length < copybreak) {
4066 struct sk_buff *new_skb =
4067 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
4069 skb_reserve(new_skb, NET_IP_ALIGN);
4070 skb_copy_to_linear_data_offset(new_skb,
4076 /* save the skb in buffer_info as good */
4077 buffer_info->skb = skb;
4080 /* else just continue with the old one */
4082 /* end copybreak code */
4083 skb_put(skb, length);
4085 /* Receive Checksum Offload */
4086 e1000_rx_checksum(adapter,
4088 ((u32)(rx_desc->errors) << 24),
4089 le16_to_cpu(rx_desc->csum), skb);
4091 skb->protocol = eth_type_trans(skb, netdev);
4093 if (unlikely(adapter->vlgrp &&
4094 (status & E1000_RXD_STAT_VP))) {
4095 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
4096 le16_to_cpu(rx_desc->special));
4098 netif_receive_skb(skb);
4101 netdev->last_rx = jiffies;
4104 rx_desc->status = 0;
4106 /* return some buffers to hardware, one at a time is too slow */
4107 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4108 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4112 /* use prefetched values */
4114 buffer_info = next_buffer;
4116 rx_ring->next_to_clean = i;
4118 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4120 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4122 adapter->total_rx_packets += total_rx_packets;
4123 adapter->total_rx_bytes += total_rx_bytes;
4124 adapter->net_stats.rx_bytes += total_rx_bytes;
4125 adapter->net_stats.rx_packets += total_rx_packets;
4130 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4131 * @adapter: address of board private structure
4134 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4135 struct e1000_rx_ring *rx_ring,
4138 struct e1000_hw *hw = &adapter->hw;
4139 struct net_device *netdev = adapter->netdev;
4140 struct pci_dev *pdev = adapter->pdev;
4141 struct e1000_rx_desc *rx_desc;
4142 struct e1000_buffer *buffer_info;
4143 struct sk_buff *skb;
4145 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
4147 i = rx_ring->next_to_use;
4148 buffer_info = &rx_ring->buffer_info[i];
4150 while (cleaned_count--) {
4151 skb = buffer_info->skb;
4157 skb = netdev_alloc_skb(netdev, bufsz);
4158 if (unlikely(!skb)) {
4159 /* Better luck next round */
4160 adapter->alloc_rx_buff_failed++;
4164 /* Fix for errata 23, can't cross 64kB boundary */
4165 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4166 struct sk_buff *oldskb = skb;
4167 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
4168 "at %p\n", bufsz, skb->data);
4169 /* Try again, without freeing the previous */
4170 skb = netdev_alloc_skb(netdev, bufsz);
4171 /* Failed allocation, critical failure */
4173 dev_kfree_skb(oldskb);
4177 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4180 dev_kfree_skb(oldskb);
4181 break; /* while !buffer_info->skb */
4184 /* Use new allocation */
4185 dev_kfree_skb(oldskb);
4187 /* Make buffer alignment 2 beyond a 16 byte boundary
4188 * this will result in a 16 byte aligned IP header after
4189 * the 14 byte MAC header is removed
4191 skb_reserve(skb, NET_IP_ALIGN);
4193 buffer_info->skb = skb;
4194 buffer_info->length = adapter->rx_buffer_len;
4196 buffer_info->dma = pci_map_single(pdev,
4198 adapter->rx_buffer_len,
4199 PCI_DMA_FROMDEVICE);
4201 /* Fix for errata 23, can't cross 64kB boundary */
4202 if (!e1000_check_64k_bound(adapter,
4203 (void *)(unsigned long)buffer_info->dma,
4204 adapter->rx_buffer_len)) {
4205 DPRINTK(RX_ERR, ERR,
4206 "dma align check failed: %u bytes at %p\n",
4207 adapter->rx_buffer_len,
4208 (void *)(unsigned long)buffer_info->dma);
4210 buffer_info->skb = NULL;
4212 pci_unmap_single(pdev, buffer_info->dma,
4213 adapter->rx_buffer_len,
4214 PCI_DMA_FROMDEVICE);
4216 break; /* while !buffer_info->skb */
4218 rx_desc = E1000_RX_DESC(*rx_ring, i);
4219 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4221 if (unlikely(++i == rx_ring->count))
4223 buffer_info = &rx_ring->buffer_info[i];
4226 if (likely(rx_ring->next_to_use != i)) {
4227 rx_ring->next_to_use = i;
4228 if (unlikely(i-- == 0))
4229 i = (rx_ring->count - 1);
4231 /* Force memory writes to complete before letting h/w
4232 * know there are new descriptors to fetch. (Only
4233 * applicable for weak-ordered memory model archs,
4234 * such as IA-64). */
4236 writel(i, hw->hw_addr + rx_ring->rdt);
4241 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4245 static void e1000_smartspeed(struct e1000_adapter *adapter)
4247 struct e1000_hw *hw = &adapter->hw;
4251 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
4252 !(hw->autoneg_advertised & ADVERTISE_1000_FULL))
4255 if (adapter->smartspeed == 0) {
4256 /* If Master/Slave config fault is asserted twice,
4257 * we assume back-to-back */
4258 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4259 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4260 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
4261 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
4262 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4263 if (phy_ctrl & CR_1000T_MS_ENABLE) {
4264 phy_ctrl &= ~CR_1000T_MS_ENABLE;
4265 e1000_write_phy_reg(hw, PHY_1000T_CTRL,
4267 adapter->smartspeed++;
4268 if (!e1000_phy_setup_autoneg(hw) &&
4269 !e1000_read_phy_reg(hw, PHY_CTRL,
4271 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4272 MII_CR_RESTART_AUTO_NEG);
4273 e1000_write_phy_reg(hw, PHY_CTRL,
4278 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4279 /* If still no link, perhaps using 2/3 pair cable */
4280 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
4281 phy_ctrl |= CR_1000T_MS_ENABLE;
4282 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
4283 if (!e1000_phy_setup_autoneg(hw) &&
4284 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
4285 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4286 MII_CR_RESTART_AUTO_NEG);
4287 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl);
4290 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4291 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4292 adapter->smartspeed = 0;
4302 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4308 return e1000_mii_ioctl(netdev, ifr, cmd);
4321 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4324 struct e1000_adapter *adapter = netdev_priv(netdev);
4325 struct e1000_hw *hw = &adapter->hw;
4326 struct mii_ioctl_data *data = if_mii(ifr);
4330 unsigned long flags;
4332 if (hw->media_type != e1000_media_type_copper)
4337 data->phy_id = hw->phy_addr;
4340 if (!capable(CAP_NET_ADMIN))
4342 spin_lock_irqsave(&adapter->stats_lock, flags);
4343 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
4345 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4348 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4351 if (!capable(CAP_NET_ADMIN))
4353 if (data->reg_num & ~(0x1F))
4355 mii_reg = data->val_in;
4356 spin_lock_irqsave(&adapter->stats_lock, flags);
4357 if (e1000_write_phy_reg(hw, data->reg_num,
4359 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4362 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4363 if (hw->media_type == e1000_media_type_copper) {
4364 switch (data->reg_num) {
4366 if (mii_reg & MII_CR_POWER_DOWN)
4368 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4370 hw->autoneg_advertised = 0x2F;
4373 spddplx = SPEED_1000;
4374 else if (mii_reg & 0x2000)
4375 spddplx = SPEED_100;
4378 spddplx += (mii_reg & 0x100)
4381 retval = e1000_set_spd_dplx(adapter,
4386 if (netif_running(adapter->netdev))
4387 e1000_reinit_locked(adapter);
4389 e1000_reset(adapter);
4391 case M88E1000_PHY_SPEC_CTRL:
4392 case M88E1000_EXT_PHY_SPEC_CTRL:
4393 if (e1000_phy_reset(hw))
4398 switch (data->reg_num) {
4400 if (mii_reg & MII_CR_POWER_DOWN)
4402 if (netif_running(adapter->netdev))
4403 e1000_reinit_locked(adapter);
4405 e1000_reset(adapter);
4413 return E1000_SUCCESS;
4416 void e1000_pci_set_mwi(struct e1000_hw *hw)
4418 struct e1000_adapter *adapter = hw->back;
4419 int ret_val = pci_set_mwi(adapter->pdev);
4422 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4425 void e1000_pci_clear_mwi(struct e1000_hw *hw)
4427 struct e1000_adapter *adapter = hw->back;
4429 pci_clear_mwi(adapter->pdev);
4432 int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
4434 struct e1000_adapter *adapter = hw->back;
4435 return pcix_get_mmrbc(adapter->pdev);
4438 void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
4440 struct e1000_adapter *adapter = hw->back;
4441 pcix_set_mmrbc(adapter->pdev, mmrbc);
4444 s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
4446 struct e1000_adapter *adapter = hw->back;
4449 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
4451 return -E1000_ERR_CONFIG;
4453 pci_read_config_word(adapter->pdev, cap_offset + reg, value);
4455 return E1000_SUCCESS;
4458 void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
4463 static void e1000_vlan_rx_register(struct net_device *netdev,
4464 struct vlan_group *grp)
4466 struct e1000_adapter *adapter = netdev_priv(netdev);
4467 struct e1000_hw *hw = &adapter->hw;
4470 if (!test_bit(__E1000_DOWN, &adapter->flags))
4471 e1000_irq_disable(adapter);
4472 adapter->vlgrp = grp;
4475 /* enable VLAN tag insert/strip */
4477 ctrl |= E1000_CTRL_VME;
4480 if (adapter->hw.mac_type != e1000_ich8lan) {
4481 /* enable VLAN receive filtering */
4483 rctl &= ~E1000_RCTL_CFIEN;
4485 e1000_update_mng_vlan(adapter);
4488 /* disable VLAN tag insert/strip */
4490 ctrl &= ~E1000_CTRL_VME;
4493 if (adapter->hw.mac_type != e1000_ich8lan) {
4494 if (adapter->mng_vlan_id !=
4495 (u16)E1000_MNG_VLAN_NONE) {
4496 e1000_vlan_rx_kill_vid(netdev,
4497 adapter->mng_vlan_id);
4498 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4503 if (!test_bit(__E1000_DOWN, &adapter->flags))
4504 e1000_irq_enable(adapter);
4507 static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
4509 struct e1000_adapter *adapter = netdev_priv(netdev);
4510 struct e1000_hw *hw = &adapter->hw;
4513 if ((hw->mng_cookie.status &
4514 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4515 (vid == adapter->mng_vlan_id))
4517 /* add VID to filter table */
4518 index = (vid >> 5) & 0x7F;
4519 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
4520 vfta |= (1 << (vid & 0x1F));
4521 e1000_write_vfta(hw, index, vfta);
4524 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
4526 struct e1000_adapter *adapter = netdev_priv(netdev);
4527 struct e1000_hw *hw = &adapter->hw;
4530 if (!test_bit(__E1000_DOWN, &adapter->flags))
4531 e1000_irq_disable(adapter);
4532 vlan_group_set_device(adapter->vlgrp, vid, NULL);
4533 if (!test_bit(__E1000_DOWN, &adapter->flags))
4534 e1000_irq_enable(adapter);
4536 if ((hw->mng_cookie.status &
4537 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4538 (vid == adapter->mng_vlan_id)) {
4539 /* release control to f/w */
4540 e1000_release_hw_control(adapter);
4544 /* remove VID from filter table */
4545 index = (vid >> 5) & 0x7F;
4546 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
4547 vfta &= ~(1 << (vid & 0x1F));
4548 e1000_write_vfta(hw, index, vfta);
4551 static void e1000_restore_vlan(struct e1000_adapter *adapter)
4553 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4555 if (adapter->vlgrp) {
4557 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4558 if (!vlan_group_get_device(adapter->vlgrp, vid))
4560 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4565 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
4567 struct e1000_hw *hw = &adapter->hw;
4571 /* Fiber NICs only allow 1000 gbps Full duplex */
4572 if ((hw->media_type == e1000_media_type_fiber) &&
4573 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4574 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4579 case SPEED_10 + DUPLEX_HALF:
4580 hw->forced_speed_duplex = e1000_10_half;
4582 case SPEED_10 + DUPLEX_FULL:
4583 hw->forced_speed_duplex = e1000_10_full;
4585 case SPEED_100 + DUPLEX_HALF:
4586 hw->forced_speed_duplex = e1000_100_half;
4588 case SPEED_100 + DUPLEX_FULL:
4589 hw->forced_speed_duplex = e1000_100_full;
4591 case SPEED_1000 + DUPLEX_FULL:
4593 hw->autoneg_advertised = ADVERTISE_1000_FULL;
4595 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4597 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4603 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4605 struct net_device *netdev = pci_get_drvdata(pdev);
4606 struct e1000_adapter *adapter = netdev_priv(netdev);
4607 struct e1000_hw *hw = &adapter->hw;
4608 u32 ctrl, ctrl_ext, rctl, status;
4609 u32 wufc = adapter->wol;
4614 netif_device_detach(netdev);
4616 if (netif_running(netdev)) {
4617 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
4618 e1000_down(adapter);
4622 retval = pci_save_state(pdev);
4627 status = er32(STATUS);
4628 if (status & E1000_STATUS_LU)
4629 wufc &= ~E1000_WUFC_LNKC;
4632 e1000_setup_rctl(adapter);
4633 e1000_set_rx_mode(netdev);
4635 /* turn on all-multi mode if wake on multicast is enabled */
4636 if (wufc & E1000_WUFC_MC) {
4638 rctl |= E1000_RCTL_MPE;
4642 if (hw->mac_type >= e1000_82540) {
4644 /* advertise wake from D3Cold */
4645 #define E1000_CTRL_ADVD3WUC 0x00100000
4646 /* phy power management enable */
4647 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4648 ctrl |= E1000_CTRL_ADVD3WUC |
4649 E1000_CTRL_EN_PHY_PWR_MGMT;
4653 if (hw->media_type == e1000_media_type_fiber ||
4654 hw->media_type == e1000_media_type_internal_serdes) {
4655 /* keep the laser running in D3 */
4656 ctrl_ext = er32(CTRL_EXT);
4657 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4658 ew32(CTRL_EXT, ctrl_ext);
4661 /* Allow time for pending master requests to run */
4662 e1000_disable_pciex_master(hw);
4664 ew32(WUC, E1000_WUC_PME_EN);
4666 pci_enable_wake(pdev, PCI_D3hot, 1);
4667 pci_enable_wake(pdev, PCI_D3cold, 1);
4671 pci_enable_wake(pdev, PCI_D3hot, 0);
4672 pci_enable_wake(pdev, PCI_D3cold, 0);
4675 e1000_release_manageability(adapter);
4677 /* make sure adapter isn't asleep if manageability is enabled */
4678 if (adapter->en_mng_pt) {
4679 pci_enable_wake(pdev, PCI_D3hot, 1);
4680 pci_enable_wake(pdev, PCI_D3cold, 1);
4683 if (hw->phy_type == e1000_phy_igp_3)
4684 e1000_phy_powerdown_workaround(hw);
4686 if (netif_running(netdev))
4687 e1000_free_irq(adapter);
4689 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4690 * would have already happened in close and is redundant. */
4691 e1000_release_hw_control(adapter);
4693 pci_disable_device(pdev);
4695 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4701 static int e1000_resume(struct pci_dev *pdev)
4703 struct net_device *netdev = pci_get_drvdata(pdev);
4704 struct e1000_adapter *adapter = netdev_priv(netdev);
4705 struct e1000_hw *hw = &adapter->hw;
4708 pci_set_power_state(pdev, PCI_D0);
4709 pci_restore_state(pdev);
4711 if (adapter->need_ioport)
4712 err = pci_enable_device(pdev);
4714 err = pci_enable_device_mem(pdev);
4716 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
4719 pci_set_master(pdev);
4721 pci_enable_wake(pdev, PCI_D3hot, 0);
4722 pci_enable_wake(pdev, PCI_D3cold, 0);
4724 if (netif_running(netdev)) {
4725 err = e1000_request_irq(adapter);
4730 e1000_power_up_phy(adapter);
4731 e1000_reset(adapter);
4734 e1000_init_manageability(adapter);
4736 if (netif_running(netdev))
4739 netif_device_attach(netdev);
4741 /* If the controller is 82573 and f/w is AMT, do not set
4742 * DRV_LOAD until the interface is up. For all other cases,
4743 * let the f/w know that the h/w is now under the control
4745 if (hw->mac_type != e1000_82573 ||
4746 !e1000_check_mng_mode(hw))
4747 e1000_get_hw_control(adapter);
4753 static void e1000_shutdown(struct pci_dev *pdev)
4755 e1000_suspend(pdev, PMSG_SUSPEND);
4758 #ifdef CONFIG_NET_POLL_CONTROLLER
4760 * Polling 'interrupt' - used by things like netconsole to send skbs
4761 * without having to re-enable interrupts. It's not called while
4762 * the interrupt routine is executing.
4764 static void e1000_netpoll(struct net_device *netdev)
4766 struct e1000_adapter *adapter = netdev_priv(netdev);
4768 disable_irq(adapter->pdev->irq);
4769 e1000_intr(adapter->pdev->irq, netdev);
4770 enable_irq(adapter->pdev->irq);
4775 * e1000_io_error_detected - called when PCI error is detected
4776 * @pdev: Pointer to PCI device
4777 * @state: The current pci conneection state
4779 * This function is called after a PCI bus error affecting
4780 * this device has been detected.
4782 static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4783 pci_channel_state_t state)
4785 struct net_device *netdev = pci_get_drvdata(pdev);
4786 struct e1000_adapter *adapter = netdev->priv;
4788 netif_device_detach(netdev);
4790 if (netif_running(netdev))
4791 e1000_down(adapter);
4792 pci_disable_device(pdev);
4794 /* Request a slot slot reset. */
4795 return PCI_ERS_RESULT_NEED_RESET;
4799 * e1000_io_slot_reset - called after the pci bus has been reset.
4800 * @pdev: Pointer to PCI device
4802 * Restart the card from scratch, as if from a cold-boot. Implementation
4803 * resembles the first-half of the e1000_resume routine.
4805 static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4807 struct net_device *netdev = pci_get_drvdata(pdev);
4808 struct e1000_adapter *adapter = netdev->priv;
4809 struct e1000_hw *hw = &adapter->hw;
4812 if (adapter->need_ioport)
4813 err = pci_enable_device(pdev);
4815 err = pci_enable_device_mem(pdev);
4817 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
4818 return PCI_ERS_RESULT_DISCONNECT;
4820 pci_set_master(pdev);
4822 pci_enable_wake(pdev, PCI_D3hot, 0);
4823 pci_enable_wake(pdev, PCI_D3cold, 0);
4825 e1000_reset(adapter);
4828 return PCI_ERS_RESULT_RECOVERED;
4832 * e1000_io_resume - called when traffic can start flowing again.
4833 * @pdev: Pointer to PCI device
4835 * This callback is called when the error recovery driver tells us that
4836 * its OK to resume normal operation. Implementation resembles the
4837 * second-half of the e1000_resume routine.
4839 static void e1000_io_resume(struct pci_dev *pdev)
4841 struct net_device *netdev = pci_get_drvdata(pdev);
4842 struct e1000_adapter *adapter = netdev->priv;
4843 struct e1000_hw *hw = &adapter->hw;
4845 e1000_init_manageability(adapter);
4847 if (netif_running(netdev)) {
4848 if (e1000_up(adapter)) {
4849 printk("e1000: can't bring device back up after reset\n");
4854 netif_device_attach(netdev);
4856 /* If the controller is 82573 and f/w is AMT, do not set
4857 * DRV_LOAD until the interface is up. For all other cases,
4858 * let the f/w know that the h/w is now under the control
4860 if (hw->mac_type != e1000_82573 ||
4861 !e1000_check_mng_mode(hw))
4862 e1000_get_hw_control(adapter);