1 /*******************************************************************************
4 Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
33 * o incorporate fix for recycled skbs from IBM LTC
35 * o Honor eeprom setting for enabling/disabling Wake On Lan
37 * o Fix memory leak in rx ring handling for PCI Express adapters
39 * o Patch from Jesper Juhl to remove redundant NULL checks for kfree
41 * o Render logic that sets/resets DRV_LOAD as inline functions to
42 * avoid code replication. If f/w is AMT then set DRV_LOAD only when
43 * network interface is open.
44 * o Handle DRV_LOAD set/reset in cases where AMT uses VLANs.
45 * o Adjust PBA partioning for Jumbo frames using MTU size and not
48 * o Use adapter->tx_timeout_factor in Tx Hung Detect logic
50 * o Support for 8086:10B5 device (Quad Port)
52 * o In AMT enabled configurations, set/reset DRV_LOAD bit on interface
55 * o Invoke e1000_check_mng_mode only for 8257x controllers since it
56 * accesses the FWSM that is not supported in other controllers
58 * o Add support for device id E1000_DEV_ID_82546GB_QUAD_COPPER
59 * o set RCTL:SECRC only for controllers newer than 82543.
60 * o When the n/w interface comes down reset DRV_LOAD bit to notify f/w.
61 * This code was moved from e1000_remove to e1000_close
63 * o Fix error in updating RDT in el1000_alloc_rx_buffers[_ps] -- one off.
64 * o Enable fc by default on 82573 controllers (do not read eeprom)
65 * o Fix rx_errors statistic not to include missed_packet_count
66 * o Fix rx_dropped statistic not to include missed_packet_count
69 * o Remove call to update statistics from the controller ib e1000_get_stats
71 * o Improved algorithm for rx buffer allocation/rdt update
72 * o Flow control watermarks relative to rx PBA size
73 * o Simplified 'Tx Hung' detect logic
75 * o Report rx buffer allocation failures and tx timeout counts in stats
77 * o Implement workaround for controller erratum -- linear non-tso packet
78 * following a TSO gets written back prematurely
80 * o Set netdev->tx_queue_len based on link speed/duplex settings.
81 * o Fix net_stats.rx_fifo_errors <p@draigBrady.com>
82 * o Do not power off PHY if SoL/IDER session is active
84 * o Fix loopback test setup/cleanup for 82571/3 controllers
85 * o Fix parsing of outgoing packets (e1000_transfer_dhcp_info) to treat
87 * o Prevent operations that will cause the PHY to be reset if SoL/IDER
88 * sessions are active and log a message
90 * o used fixed size descriptors for all MTU sizes, reduces memory load
92 * o Fixed ethtool diagnostics
93 * o Enabled flow control to take default eeprom settings
94 * o Added stats_lock around e1000_read_phy_reg commands to avoid concurrent
95 * calls, one from mii_ioctl and other from within update_stats while
96 * processing MIIREG ioctl.
99 char e1000_driver_name[] = "e1000";
100 static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
101 #ifndef CONFIG_E1000_NAPI
104 #define DRIVERNAPI "-NAPI"
106 #define DRV_VERSION "7.0.33-k2"DRIVERNAPI
107 char e1000_driver_version[] = DRV_VERSION;
108 static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation.";
110 /* e1000_pci_tbl - PCI Device ID Table
112 * Last entry must be all 0s
114 * Macro expands to...
115 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
117 static struct pci_device_id e1000_pci_tbl[] = {
118 INTEL_E1000_ETHERNET_DEVICE(0x1000),
119 INTEL_E1000_ETHERNET_DEVICE(0x1001),
120 INTEL_E1000_ETHERNET_DEVICE(0x1004),
121 INTEL_E1000_ETHERNET_DEVICE(0x1008),
122 INTEL_E1000_ETHERNET_DEVICE(0x1009),
123 INTEL_E1000_ETHERNET_DEVICE(0x100C),
124 INTEL_E1000_ETHERNET_DEVICE(0x100D),
125 INTEL_E1000_ETHERNET_DEVICE(0x100E),
126 INTEL_E1000_ETHERNET_DEVICE(0x100F),
127 INTEL_E1000_ETHERNET_DEVICE(0x1010),
128 INTEL_E1000_ETHERNET_DEVICE(0x1011),
129 INTEL_E1000_ETHERNET_DEVICE(0x1012),
130 INTEL_E1000_ETHERNET_DEVICE(0x1013),
131 INTEL_E1000_ETHERNET_DEVICE(0x1014),
132 INTEL_E1000_ETHERNET_DEVICE(0x1015),
133 INTEL_E1000_ETHERNET_DEVICE(0x1016),
134 INTEL_E1000_ETHERNET_DEVICE(0x1017),
135 INTEL_E1000_ETHERNET_DEVICE(0x1018),
136 INTEL_E1000_ETHERNET_DEVICE(0x1019),
137 INTEL_E1000_ETHERNET_DEVICE(0x101A),
138 INTEL_E1000_ETHERNET_DEVICE(0x101D),
139 INTEL_E1000_ETHERNET_DEVICE(0x101E),
140 INTEL_E1000_ETHERNET_DEVICE(0x1026),
141 INTEL_E1000_ETHERNET_DEVICE(0x1027),
142 INTEL_E1000_ETHERNET_DEVICE(0x1028),
143 INTEL_E1000_ETHERNET_DEVICE(0x105E),
144 INTEL_E1000_ETHERNET_DEVICE(0x105F),
145 INTEL_E1000_ETHERNET_DEVICE(0x1060),
146 INTEL_E1000_ETHERNET_DEVICE(0x1075),
147 INTEL_E1000_ETHERNET_DEVICE(0x1076),
148 INTEL_E1000_ETHERNET_DEVICE(0x1077),
149 INTEL_E1000_ETHERNET_DEVICE(0x1078),
150 INTEL_E1000_ETHERNET_DEVICE(0x1079),
151 INTEL_E1000_ETHERNET_DEVICE(0x107A),
152 INTEL_E1000_ETHERNET_DEVICE(0x107B),
153 INTEL_E1000_ETHERNET_DEVICE(0x107C),
154 INTEL_E1000_ETHERNET_DEVICE(0x107D),
155 INTEL_E1000_ETHERNET_DEVICE(0x107E),
156 INTEL_E1000_ETHERNET_DEVICE(0x107F),
157 INTEL_E1000_ETHERNET_DEVICE(0x108A),
158 INTEL_E1000_ETHERNET_DEVICE(0x108B),
159 INTEL_E1000_ETHERNET_DEVICE(0x108C),
160 INTEL_E1000_ETHERNET_DEVICE(0x1099),
161 INTEL_E1000_ETHERNET_DEVICE(0x109A),
162 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
163 /* required last entry */
167 MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
169 int e1000_up(struct e1000_adapter *adapter);
170 void e1000_down(struct e1000_adapter *adapter);
171 void e1000_reset(struct e1000_adapter *adapter);
172 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
173 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
174 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
175 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
176 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
177 static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
178 struct e1000_tx_ring *txdr);
179 static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
180 struct e1000_rx_ring *rxdr);
181 static void e1000_free_tx_resources(struct e1000_adapter *adapter,
182 struct e1000_tx_ring *tx_ring);
183 static void e1000_free_rx_resources(struct e1000_adapter *adapter,
184 struct e1000_rx_ring *rx_ring);
185 void e1000_update_stats(struct e1000_adapter *adapter);
187 /* Local Function Prototypes */
189 static int e1000_init_module(void);
190 static void e1000_exit_module(void);
191 static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
192 static void __devexit e1000_remove(struct pci_dev *pdev);
193 static int e1000_alloc_queues(struct e1000_adapter *adapter);
194 static int e1000_sw_init(struct e1000_adapter *adapter);
195 static int e1000_open(struct net_device *netdev);
196 static int e1000_close(struct net_device *netdev);
197 static void e1000_configure_tx(struct e1000_adapter *adapter);
198 static void e1000_configure_rx(struct e1000_adapter *adapter);
199 static void e1000_setup_rctl(struct e1000_adapter *adapter);
200 static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
201 static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
202 static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
203 struct e1000_tx_ring *tx_ring);
204 static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
205 struct e1000_rx_ring *rx_ring);
206 static void e1000_set_multi(struct net_device *netdev);
207 static void e1000_update_phy_info(unsigned long data);
208 static void e1000_watchdog(unsigned long data);
209 static void e1000_watchdog_task(struct e1000_adapter *adapter);
210 static void e1000_82547_tx_fifo_stall(unsigned long data);
211 static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
212 static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
213 static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
214 static int e1000_set_mac(struct net_device *netdev, void *p);
215 static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs);
216 static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter,
217 struct e1000_tx_ring *tx_ring);
218 #ifdef CONFIG_E1000_NAPI
219 static int e1000_clean(struct net_device *poll_dev, int *budget);
220 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
221 struct e1000_rx_ring *rx_ring,
222 int *work_done, int work_to_do);
223 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
224 struct e1000_rx_ring *rx_ring,
225 int *work_done, int work_to_do);
227 static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter,
228 struct e1000_rx_ring *rx_ring);
229 static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
230 struct e1000_rx_ring *rx_ring);
232 static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
233 struct e1000_rx_ring *rx_ring,
235 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
236 struct e1000_rx_ring *rx_ring,
238 static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
239 static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
241 void e1000_set_ethtool_ops(struct net_device *netdev);
242 static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
243 static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
244 static void e1000_tx_timeout(struct net_device *dev);
245 static void e1000_tx_timeout_task(struct net_device *dev);
246 static void e1000_smartspeed(struct e1000_adapter *adapter);
247 static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
248 struct sk_buff *skb);
250 static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
251 static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
252 static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
253 static void e1000_restore_vlan(struct e1000_adapter *adapter);
256 static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
257 static int e1000_resume(struct pci_dev *pdev);
260 #ifdef CONFIG_NET_POLL_CONTROLLER
261 /* for netdump / net console */
262 static void e1000_netpoll (struct net_device *netdev);
266 /* Exported from other modules */
268 extern void e1000_check_options(struct e1000_adapter *adapter);
270 static struct pci_driver e1000_driver = {
271 .name = e1000_driver_name,
272 .id_table = e1000_pci_tbl,
273 .probe = e1000_probe,
274 .remove = __devexit_p(e1000_remove),
275 /* Power Managment Hooks */
277 .suspend = e1000_suspend,
278 .resume = e1000_resume
282 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
283 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
284 MODULE_LICENSE("GPL");
285 MODULE_VERSION(DRV_VERSION);
287 static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
288 module_param(debug, int, 0);
289 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
292 * e1000_init_module - Driver Registration Routine
294 * e1000_init_module is the first routine called when the driver is
295 * loaded. All it does is register with the PCI subsystem.
299 e1000_init_module(void)
302 printk(KERN_INFO "%s - version %s\n",
303 e1000_driver_string, e1000_driver_version);
305 printk(KERN_INFO "%s\n", e1000_copyright);
307 ret = pci_module_init(&e1000_driver);
312 module_init(e1000_init_module);
315 * e1000_exit_module - Driver Exit Cleanup Routine
317 * e1000_exit_module is called just before the driver is removed
322 e1000_exit_module(void)
324 pci_unregister_driver(&e1000_driver);
327 module_exit(e1000_exit_module);
330 * e1000_irq_disable - Mask off interrupt generation on the NIC
331 * @adapter: board private structure
335 e1000_irq_disable(struct e1000_adapter *adapter)
337 atomic_inc(&adapter->irq_sem);
338 E1000_WRITE_REG(&adapter->hw, IMC, ~0);
339 E1000_WRITE_FLUSH(&adapter->hw);
340 synchronize_irq(adapter->pdev->irq);
344 * e1000_irq_enable - Enable default interrupt generation settings
345 * @adapter: board private structure
349 e1000_irq_enable(struct e1000_adapter *adapter)
351 if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
352 E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
353 E1000_WRITE_FLUSH(&adapter->hw);
358 e1000_update_mng_vlan(struct e1000_adapter *adapter)
360 struct net_device *netdev = adapter->netdev;
361 uint16_t vid = adapter->hw.mng_cookie.vlan_id;
362 uint16_t old_vid = adapter->mng_vlan_id;
363 if (adapter->vlgrp) {
364 if (!adapter->vlgrp->vlan_devices[vid]) {
365 if (adapter->hw.mng_cookie.status &
366 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
367 e1000_vlan_rx_add_vid(netdev, vid);
368 adapter->mng_vlan_id = vid;
370 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
372 if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
374 !adapter->vlgrp->vlan_devices[old_vid])
375 e1000_vlan_rx_kill_vid(netdev, old_vid);
377 adapter->mng_vlan_id = vid;
382 * e1000_release_hw_control - release control of the h/w to f/w
383 * @adapter: address of board private structure
385 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
386 * For ASF and Pass Through versions of f/w this means that the
387 * driver is no longer loaded. For AMT version (only with 82573) i
388 * of the f/w this means that the netowrk i/f is closed.
393 e1000_release_hw_control(struct e1000_adapter *adapter)
398 /* Let firmware taken over control of h/w */
399 switch (adapter->hw.mac_type) {
402 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
403 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
404 ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
407 swsm = E1000_READ_REG(&adapter->hw, SWSM);
408 E1000_WRITE_REG(&adapter->hw, SWSM,
409 swsm & ~E1000_SWSM_DRV_LOAD);
416 * e1000_get_hw_control - get control of the h/w from f/w
417 * @adapter: address of board private structure
419 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
420 * For ASF and Pass Through versions of f/w this means that
421 * the driver is loaded. For AMT version (only with 82573)
422 * of the f/w this means that the netowrk i/f is open.
427 e1000_get_hw_control(struct e1000_adapter *adapter)
431 /* Let firmware know the driver has taken over */
432 switch (adapter->hw.mac_type) {
435 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
436 E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
437 ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
440 swsm = E1000_READ_REG(&adapter->hw, SWSM);
441 E1000_WRITE_REG(&adapter->hw, SWSM,
442 swsm | E1000_SWSM_DRV_LOAD);
450 e1000_up(struct e1000_adapter *adapter)
452 struct net_device *netdev = adapter->netdev;
455 /* hardware has been reset, we need to reload some things */
457 /* Reset the PHY if it was previously powered down */
458 if (adapter->hw.media_type == e1000_media_type_copper) {
460 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
461 if (mii_reg & MII_CR_POWER_DOWN)
462 e1000_phy_reset(&adapter->hw);
465 e1000_set_multi(netdev);
467 e1000_restore_vlan(adapter);
469 e1000_configure_tx(adapter);
470 e1000_setup_rctl(adapter);
471 e1000_configure_rx(adapter);
472 /* call E1000_DESC_UNUSED which always leaves
473 * at least 1 descriptor unused to make sure
474 * next_to_use != next_to_clean */
475 for (i = 0; i < adapter->num_rx_queues; i++) {
476 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
477 adapter->alloc_rx_buf(adapter, ring,
478 E1000_DESC_UNUSED(ring));
481 #ifdef CONFIG_PCI_MSI
482 if (adapter->hw.mac_type > e1000_82547_rev_2) {
483 adapter->have_msi = TRUE;
484 if ((err = pci_enable_msi(adapter->pdev))) {
486 "Unable to allocate MSI interrupt Error: %d\n", err);
487 adapter->have_msi = FALSE;
491 if ((err = request_irq(adapter->pdev->irq, &e1000_intr,
492 SA_SHIRQ | SA_SAMPLE_RANDOM,
493 netdev->name, netdev))) {
495 "Unable to allocate interrupt Error: %d\n", err);
499 adapter->tx_queue_len = netdev->tx_queue_len;
501 mod_timer(&adapter->watchdog_timer, jiffies);
503 #ifdef CONFIG_E1000_NAPI
504 netif_poll_enable(netdev);
506 e1000_irq_enable(adapter);
512 e1000_down(struct e1000_adapter *adapter)
514 struct net_device *netdev = adapter->netdev;
515 boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) &&
516 e1000_check_mng_mode(&adapter->hw);
518 e1000_irq_disable(adapter);
520 free_irq(adapter->pdev->irq, netdev);
521 #ifdef CONFIG_PCI_MSI
522 if (adapter->hw.mac_type > e1000_82547_rev_2 &&
523 adapter->have_msi == TRUE)
524 pci_disable_msi(adapter->pdev);
526 del_timer_sync(&adapter->tx_fifo_stall_timer);
527 del_timer_sync(&adapter->watchdog_timer);
528 del_timer_sync(&adapter->phy_info_timer);
530 #ifdef CONFIG_E1000_NAPI
531 netif_poll_disable(netdev);
533 netdev->tx_queue_len = adapter->tx_queue_len;
534 adapter->link_speed = 0;
535 adapter->link_duplex = 0;
536 netif_carrier_off(netdev);
537 netif_stop_queue(netdev);
539 e1000_reset(adapter);
540 e1000_clean_all_tx_rings(adapter);
541 e1000_clean_all_rx_rings(adapter);
543 /* Power down the PHY so no link is implied when interface is down *
544 * The PHY cannot be powered down if any of the following is TRUE *
547 * (c) SoL/IDER session is active */
548 if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&
549 adapter->hw.media_type == e1000_media_type_copper &&
550 !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) &&
552 !e1000_check_phy_reset_block(&adapter->hw)) {
554 e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
555 mii_reg |= MII_CR_POWER_DOWN;
556 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
562 e1000_reset(struct e1000_adapter *adapter)
565 uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
567 /* Repartition Pba for greater than 9k mtu
568 * To take effect CTRL.RST is required.
571 switch (adapter->hw.mac_type) {
573 case e1000_82547_rev_2:
588 if ((adapter->hw.mac_type != e1000_82573) &&
589 (adapter->netdev->mtu > E1000_RXBUFFER_8192))
590 pba -= 8; /* allocate more FIFO for Tx */
593 if (adapter->hw.mac_type == e1000_82547) {
594 adapter->tx_fifo_head = 0;
595 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
596 adapter->tx_fifo_size =
597 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
598 atomic_set(&adapter->tx_fifo_stall, 0);
601 E1000_WRITE_REG(&adapter->hw, PBA, pba);
603 /* flow control settings */
604 /* Set the FC high water mark to 90% of the FIFO size.
605 * Required to clear last 3 LSB */
606 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
608 adapter->hw.fc_high_water = fc_high_water_mark;
609 adapter->hw.fc_low_water = fc_high_water_mark - 8;
610 adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
611 adapter->hw.fc_send_xon = 1;
612 adapter->hw.fc = adapter->hw.original_fc;
614 /* Allow time for pending master requests to run */
615 e1000_reset_hw(&adapter->hw);
616 if (adapter->hw.mac_type >= e1000_82544)
617 E1000_WRITE_REG(&adapter->hw, WUC, 0);
618 if (e1000_init_hw(&adapter->hw))
619 DPRINTK(PROBE, ERR, "Hardware Error\n");
620 e1000_update_mng_vlan(adapter);
621 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
622 E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
624 e1000_reset_adaptive(&adapter->hw);
625 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
626 if (adapter->en_mng_pt) {
627 manc = E1000_READ_REG(&adapter->hw, MANC);
628 manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);
629 E1000_WRITE_REG(&adapter->hw, MANC, manc);
634 * e1000_probe - Device Initialization Routine
635 * @pdev: PCI device information struct
636 * @ent: entry in e1000_pci_tbl
638 * Returns 0 on success, negative on failure
640 * e1000_probe initializes an adapter identified by a pci_dev structure.
641 * The OS initialization, configuring of the adapter private structure,
642 * and a hardware reset occur.
646 e1000_probe(struct pci_dev *pdev,
647 const struct pci_device_id *ent)
649 struct net_device *netdev;
650 struct e1000_adapter *adapter;
651 unsigned long mmio_start, mmio_len;
653 static int cards_found = 0;
654 static int e1000_ksp3_port_a = 0; /* global ksp3 port a indication */
655 int i, err, pci_using_dac;
656 uint16_t eeprom_data;
657 uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
658 if ((err = pci_enable_device(pdev)))
661 if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) {
664 if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
665 E1000_ERR("No usable DMA configuration, aborting\n");
671 if ((err = pci_request_regions(pdev, e1000_driver_name)))
674 pci_set_master(pdev);
676 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
679 goto err_alloc_etherdev;
682 SET_MODULE_OWNER(netdev);
683 SET_NETDEV_DEV(netdev, &pdev->dev);
685 pci_set_drvdata(pdev, netdev);
686 adapter = netdev_priv(netdev);
687 adapter->netdev = netdev;
688 adapter->pdev = pdev;
689 adapter->hw.back = adapter;
690 adapter->msg_enable = (1 << debug) - 1;
692 mmio_start = pci_resource_start(pdev, BAR_0);
693 mmio_len = pci_resource_len(pdev, BAR_0);
695 adapter->hw.hw_addr = ioremap(mmio_start, mmio_len);
696 if (!adapter->hw.hw_addr) {
701 for (i = BAR_1; i <= BAR_5; i++) {
702 if (pci_resource_len(pdev, i) == 0)
704 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
705 adapter->hw.io_base = pci_resource_start(pdev, i);
710 netdev->open = &e1000_open;
711 netdev->stop = &e1000_close;
712 netdev->hard_start_xmit = &e1000_xmit_frame;
713 netdev->get_stats = &e1000_get_stats;
714 netdev->set_multicast_list = &e1000_set_multi;
715 netdev->set_mac_address = &e1000_set_mac;
716 netdev->change_mtu = &e1000_change_mtu;
717 netdev->do_ioctl = &e1000_ioctl;
718 e1000_set_ethtool_ops(netdev);
719 netdev->tx_timeout = &e1000_tx_timeout;
720 netdev->watchdog_timeo = 5 * HZ;
721 #ifdef CONFIG_E1000_NAPI
722 netdev->poll = &e1000_clean;
725 netdev->vlan_rx_register = e1000_vlan_rx_register;
726 netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
727 netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
728 #ifdef CONFIG_NET_POLL_CONTROLLER
729 netdev->poll_controller = e1000_netpoll;
731 strcpy(netdev->name, pci_name(pdev));
733 netdev->mem_start = mmio_start;
734 netdev->mem_end = mmio_start + mmio_len;
735 netdev->base_addr = adapter->hw.io_base;
737 adapter->bd_number = cards_found;
739 /* setup the private structure */
741 if ((err = e1000_sw_init(adapter)))
744 if ((err = e1000_check_phy_reset_block(&adapter->hw)))
745 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
747 /* if ksp3, indicate if it's port a being setup */
748 if (pdev->device == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3 &&
749 e1000_ksp3_port_a == 0)
750 adapter->ksp3_port_a = 1;
752 /* Reset for multiple KP3 adapters */
753 if (e1000_ksp3_port_a == 4)
754 e1000_ksp3_port_a = 0;
756 if (adapter->hw.mac_type >= e1000_82543) {
757 netdev->features = NETIF_F_SG |
761 NETIF_F_HW_VLAN_FILTER;
765 if ((adapter->hw.mac_type >= e1000_82544) &&
766 (adapter->hw.mac_type != e1000_82547))
767 netdev->features |= NETIF_F_TSO;
769 #ifdef NETIF_F_TSO_IPV6
770 if (adapter->hw.mac_type > e1000_82547_rev_2)
771 netdev->features |= NETIF_F_TSO_IPV6;
775 netdev->features |= NETIF_F_HIGHDMA;
777 /* hard_start_xmit is safe against parallel locking */
778 netdev->features |= NETIF_F_LLTX;
780 adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
782 /* before reading the EEPROM, reset the controller to
783 * put the device in a known good starting state */
785 e1000_reset_hw(&adapter->hw);
787 /* make sure the EEPROM is good */
789 if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
790 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
795 /* copy the MAC address out of the EEPROM */
797 if (e1000_read_mac_addr(&adapter->hw))
798 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
799 memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
800 memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
802 if (!is_valid_ether_addr(netdev->perm_addr)) {
803 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
808 e1000_read_part_num(&adapter->hw, &(adapter->part_num));
810 e1000_get_bus_info(&adapter->hw);
812 init_timer(&adapter->tx_fifo_stall_timer);
813 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
814 adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
816 init_timer(&adapter->watchdog_timer);
817 adapter->watchdog_timer.function = &e1000_watchdog;
818 adapter->watchdog_timer.data = (unsigned long) adapter;
820 INIT_WORK(&adapter->watchdog_task,
821 (void (*)(void *))e1000_watchdog_task, adapter);
823 init_timer(&adapter->phy_info_timer);
824 adapter->phy_info_timer.function = &e1000_update_phy_info;
825 adapter->phy_info_timer.data = (unsigned long) adapter;
827 INIT_WORK(&adapter->tx_timeout_task,
828 (void (*)(void *))e1000_tx_timeout_task, netdev);
830 /* we're going to reset, so assume we have no link for now */
832 netif_carrier_off(netdev);
833 netif_stop_queue(netdev);
835 e1000_check_options(adapter);
837 /* Initial Wake on LAN setting
838 * If APM wake is enabled in the EEPROM,
839 * enable the ACPI Magic Packet filter
842 switch (adapter->hw.mac_type) {
843 case e1000_82542_rev2_0:
844 case e1000_82542_rev2_1:
848 e1000_read_eeprom(&adapter->hw,
849 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
850 eeprom_apme_mask = E1000_EEPROM_82544_APM;
853 case e1000_82546_rev_3:
855 if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){
856 e1000_read_eeprom(&adapter->hw,
857 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
862 e1000_read_eeprom(&adapter->hw,
863 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
866 if (eeprom_data & eeprom_apme_mask)
867 adapter->wol |= E1000_WUFC_MAG;
869 /* print bus type/speed/width info */
871 struct e1000_hw *hw = &adapter->hw;
872 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
873 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
874 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
875 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
876 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
877 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
878 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
879 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
880 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
881 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
882 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
886 for (i = 0; i < 6; i++)
887 printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':');
889 /* reset the hardware with the new settings */
890 e1000_reset(adapter);
892 /* If the controller is 82573 and f/w is AMT, do not set
893 * DRV_LOAD until the interface is up. For all other cases,
894 * let the f/w know that the h/w is now under the control
896 if (adapter->hw.mac_type != e1000_82573 ||
897 !e1000_check_mng_mode(&adapter->hw))
898 e1000_get_hw_control(adapter);
900 strcpy(netdev->name, "eth%d");
901 if ((err = register_netdev(netdev)))
904 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
912 iounmap(adapter->hw.hw_addr);
916 pci_release_regions(pdev);
921 * e1000_remove - Device Removal Routine
922 * @pdev: PCI device information struct
924 * e1000_remove is called by the PCI subsystem to alert the driver
925 * that it should release a PCI device. The could be caused by a
926 * Hot-Plug event, or because the driver is going to be removed from
930 static void __devexit
931 e1000_remove(struct pci_dev *pdev)
933 struct net_device *netdev = pci_get_drvdata(pdev);
934 struct e1000_adapter *adapter = netdev_priv(netdev);
936 #ifdef CONFIG_E1000_NAPI
940 flush_scheduled_work();
942 if (adapter->hw.mac_type >= e1000_82540 &&
943 adapter->hw.media_type == e1000_media_type_copper) {
944 manc = E1000_READ_REG(&adapter->hw, MANC);
945 if (manc & E1000_MANC_SMBUS_EN) {
946 manc |= E1000_MANC_ARP_EN;
947 E1000_WRITE_REG(&adapter->hw, MANC, manc);
951 /* Release control of h/w to f/w. If f/w is AMT enabled, this
952 * would have already happened in close and is redundant. */
953 e1000_release_hw_control(adapter);
955 unregister_netdev(netdev);
956 #ifdef CONFIG_E1000_NAPI
957 for (i = 0; i < adapter->num_rx_queues; i++)
958 __dev_put(&adapter->polling_netdev[i]);
961 if (!e1000_check_phy_reset_block(&adapter->hw))
962 e1000_phy_hw_reset(&adapter->hw);
964 kfree(adapter->tx_ring);
965 kfree(adapter->rx_ring);
966 #ifdef CONFIG_E1000_NAPI
967 kfree(adapter->polling_netdev);
970 iounmap(adapter->hw.hw_addr);
971 pci_release_regions(pdev);
975 pci_disable_device(pdev);
979 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
980 * @adapter: board private structure to initialize
982 * e1000_sw_init initializes the Adapter private data structure.
983 * Fields are initialized based on PCI device information and
984 * OS network device settings (MTU size).
988 e1000_sw_init(struct e1000_adapter *adapter)
990 struct e1000_hw *hw = &adapter->hw;
991 struct net_device *netdev = adapter->netdev;
992 struct pci_dev *pdev = adapter->pdev;
993 #ifdef CONFIG_E1000_NAPI
997 /* PCI config space info */
999 hw->vendor_id = pdev->vendor;
1000 hw->device_id = pdev->device;
1001 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1002 hw->subsystem_id = pdev->subsystem_device;
1004 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
1006 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1008 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
1009 adapter->rx_ps_bsize0 = E1000_RXBUFFER_256;
1010 hw->max_frame_size = netdev->mtu +
1011 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1012 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1014 /* identify the MAC */
1016 if (e1000_set_mac_type(hw)) {
1017 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1021 /* initialize eeprom parameters */
1023 if (e1000_init_eeprom_params(hw)) {
1024 E1000_ERR("EEPROM initialization failed\n");
1028 switch (hw->mac_type) {
1033 case e1000_82541_rev_2:
1034 case e1000_82547_rev_2:
1035 hw->phy_init_script = 1;
1039 e1000_set_media_type(hw);
1041 hw->wait_autoneg_complete = FALSE;
1042 hw->tbi_compatibility_en = TRUE;
1043 hw->adaptive_ifs = TRUE;
1045 /* Copper options */
1047 if (hw->media_type == e1000_media_type_copper) {
1048 hw->mdix = AUTO_ALL_MODES;
1049 hw->disable_polarity_correction = FALSE;
1050 hw->master_slave = E1000_MASTER_SLAVE;
1053 adapter->num_tx_queues = 1;
1054 adapter->num_rx_queues = 1;
1056 if (e1000_alloc_queues(adapter)) {
1057 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1061 #ifdef CONFIG_E1000_NAPI
1062 for (i = 0; i < adapter->num_rx_queues; i++) {
1063 adapter->polling_netdev[i].priv = adapter;
1064 adapter->polling_netdev[i].poll = &e1000_clean;
1065 adapter->polling_netdev[i].weight = 64;
1066 dev_hold(&adapter->polling_netdev[i]);
1067 set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
1069 spin_lock_init(&adapter->tx_queue_lock);
1072 atomic_set(&adapter->irq_sem, 1);
1073 spin_lock_init(&adapter->stats_lock);
1079 * e1000_alloc_queues - Allocate memory for all rings
1080 * @adapter: board private structure to initialize
1082 * We allocate one ring per queue at run-time since we don't know the
1083 * number of queues at compile-time. The polling_netdev array is
1084 * intended for Multiqueue, but should work fine with a single queue.
1087 static int __devinit
1088 e1000_alloc_queues(struct e1000_adapter *adapter)
1092 size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues;
1093 adapter->tx_ring = kmalloc(size, GFP_KERNEL);
1094 if (!adapter->tx_ring)
1096 memset(adapter->tx_ring, 0, size);
1098 size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues;
1099 adapter->rx_ring = kmalloc(size, GFP_KERNEL);
1100 if (!adapter->rx_ring) {
1101 kfree(adapter->tx_ring);
1104 memset(adapter->rx_ring, 0, size);
1106 #ifdef CONFIG_E1000_NAPI
1107 size = sizeof(struct net_device) * adapter->num_rx_queues;
1108 adapter->polling_netdev = kmalloc(size, GFP_KERNEL);
1109 if (!adapter->polling_netdev) {
1110 kfree(adapter->tx_ring);
1111 kfree(adapter->rx_ring);
1114 memset(adapter->polling_netdev, 0, size);
1117 return E1000_SUCCESS;
1121 * e1000_open - Called when a network interface is made active
1122 * @netdev: network interface device structure
1124 * Returns 0 on success, negative value on failure
1126 * The open entry point is called when a network interface is made
1127 * active by the system (IFF_UP). At this point all resources needed
1128 * for transmit and receive operations are allocated, the interrupt
1129 * handler is registered with the OS, the watchdog timer is started,
1130 * and the stack is notified that the interface is ready.
1134 e1000_open(struct net_device *netdev)
1136 struct e1000_adapter *adapter = netdev_priv(netdev);
1139 /* allocate transmit descriptors */
1141 if ((err = e1000_setup_all_tx_resources(adapter)))
1144 /* allocate receive descriptors */
1146 if ((err = e1000_setup_all_rx_resources(adapter)))
1149 if ((err = e1000_up(adapter)))
1151 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1152 if ((adapter->hw.mng_cookie.status &
1153 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1154 e1000_update_mng_vlan(adapter);
1157 /* If AMT is enabled, let the firmware know that the network
1158 * interface is now open */
1159 if (adapter->hw.mac_type == e1000_82573 &&
1160 e1000_check_mng_mode(&adapter->hw))
1161 e1000_get_hw_control(adapter);
1163 return E1000_SUCCESS;
1166 e1000_free_all_rx_resources(adapter);
1168 e1000_free_all_tx_resources(adapter);
1170 e1000_reset(adapter);
1176 * e1000_close - Disables a network interface
1177 * @netdev: network interface device structure
1179 * Returns 0, this is not allowed to fail
1181 * The close entry point is called when an interface is de-activated
1182 * by the OS. The hardware is still under the drivers control, but
1183 * needs to be disabled. A global MAC reset is issued to stop the
1184 * hardware, and all transmit and receive resources are freed.
1188 e1000_close(struct net_device *netdev)
1190 struct e1000_adapter *adapter = netdev_priv(netdev);
1192 e1000_down(adapter);
1194 e1000_free_all_tx_resources(adapter);
1195 e1000_free_all_rx_resources(adapter);
1197 if ((adapter->hw.mng_cookie.status &
1198 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1199 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1202 /* If AMT is enabled, let the firmware know that the network
1203 * interface is now closed */
1204 if (adapter->hw.mac_type == e1000_82573 &&
1205 e1000_check_mng_mode(&adapter->hw))
1206 e1000_release_hw_control(adapter);
1212 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1213 * @adapter: address of board private structure
1214 * @start: address of beginning of memory
1215 * @len: length of memory
1217 static inline boolean_t
1218 e1000_check_64k_bound(struct e1000_adapter *adapter,
1219 void *start, unsigned long len)
1221 unsigned long begin = (unsigned long) start;
1222 unsigned long end = begin + len;
1224 /* First rev 82545 and 82546 need to not allow any memory
1225 * write location to cross 64k boundary due to errata 23 */
1226 if (adapter->hw.mac_type == e1000_82545 ||
1227 adapter->hw.mac_type == e1000_82546) {
1228 return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE;
1235 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1236 * @adapter: board private structure
1237 * @txdr: tx descriptor ring (for a specific queue) to setup
1239 * Return 0 on success, negative on failure
1243 e1000_setup_tx_resources(struct e1000_adapter *adapter,
1244 struct e1000_tx_ring *txdr)
1246 struct pci_dev *pdev = adapter->pdev;
1249 size = sizeof(struct e1000_buffer) * txdr->count;
1251 txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus));
1252 if (!txdr->buffer_info) {
1254 "Unable to allocate memory for the transmit descriptor ring\n");
1257 memset(txdr->buffer_info, 0, size);
1259 /* round up to nearest 4K */
1261 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
1262 E1000_ROUNDUP(txdr->size, 4096);
1264 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1267 vfree(txdr->buffer_info);
1269 "Unable to allocate memory for the transmit descriptor ring\n");
1273 /* Fix for errata 23, can't cross 64kB boundary */
1274 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1275 void *olddesc = txdr->desc;
1276 dma_addr_t olddma = txdr->dma;
1277 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1278 "at %p\n", txdr->size, txdr->desc);
1279 /* Try again, without freeing the previous */
1280 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
1281 /* Failed allocation, critical failure */
1283 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1284 goto setup_tx_desc_die;
1287 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1289 pci_free_consistent(pdev, txdr->size, txdr->desc,
1291 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1293 "Unable to allocate aligned memory "
1294 "for the transmit descriptor ring\n");
1295 vfree(txdr->buffer_info);
1298 /* Free old allocation, new allocation was successful */
1299 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1302 memset(txdr->desc, 0, txdr->size);
1304 txdr->next_to_use = 0;
1305 txdr->next_to_clean = 0;
1306 spin_lock_init(&txdr->tx_lock);
1312 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1313 * (Descriptors) for all queues
1314 * @adapter: board private structure
1316 * If this function returns with an error, then it's possible one or
1317 * more of the rings is populated (while the rest are not). It is the
1318 * callers duty to clean those orphaned rings.
1320 * Return 0 on success, negative on failure
1324 e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
1328 for (i = 0; i < adapter->num_tx_queues; i++) {
1329 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1332 "Allocation for Tx Queue %u failed\n", i);
1341 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1342 * @adapter: board private structure
1344 * Configure the Tx unit of the MAC after a reset.
1348 e1000_configure_tx(struct e1000_adapter *adapter)
1351 struct e1000_hw *hw = &adapter->hw;
1352 uint32_t tdlen, tctl, tipg, tarc;
1353 uint32_t ipgr1, ipgr2;
1355 /* Setup the HW Tx Head and Tail descriptor pointers */
1357 switch (adapter->num_tx_queues) {
1360 tdba = adapter->tx_ring[0].dma;
1361 tdlen = adapter->tx_ring[0].count *
1362 sizeof(struct e1000_tx_desc);
1363 E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
1364 E1000_WRITE_REG(hw, TDBAH, (tdba >> 32));
1365 E1000_WRITE_REG(hw, TDLEN, tdlen);
1366 E1000_WRITE_REG(hw, TDH, 0);
1367 E1000_WRITE_REG(hw, TDT, 0);
1368 adapter->tx_ring[0].tdh = E1000_TDH;
1369 adapter->tx_ring[0].tdt = E1000_TDT;
1373 /* Set the default values for the Tx Inter Packet Gap timer */
1375 if (hw->media_type == e1000_media_type_fiber ||
1376 hw->media_type == e1000_media_type_internal_serdes)
1377 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1379 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1381 switch (hw->mac_type) {
1382 case e1000_82542_rev2_0:
1383 case e1000_82542_rev2_1:
1384 tipg = DEFAULT_82542_TIPG_IPGT;
1385 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1386 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1389 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1390 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1393 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1394 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1395 E1000_WRITE_REG(hw, TIPG, tipg);
1397 /* Set the Tx Interrupt Delay register */
1399 E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
1400 if (hw->mac_type >= e1000_82540)
1401 E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay);
1403 /* Program the Transmit Control Register */
1405 tctl = E1000_READ_REG(hw, TCTL);
1407 tctl &= ~E1000_TCTL_CT;
1408 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1409 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1412 /* disable Multiple Reads for debugging */
1413 tctl &= ~E1000_TCTL_MULR;
1416 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1417 tarc = E1000_READ_REG(hw, TARC0);
1418 tarc |= ((1 << 25) | (1 << 21));
1419 E1000_WRITE_REG(hw, TARC0, tarc);
1420 tarc = E1000_READ_REG(hw, TARC1);
1422 if (tctl & E1000_TCTL_MULR)
1426 E1000_WRITE_REG(hw, TARC1, tarc);
1429 e1000_config_collision_dist(hw);
1431 /* Setup Transmit Descriptor Settings for eop descriptor */
1432 adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP |
1435 if (hw->mac_type < e1000_82543)
1436 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1438 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1440 /* Cache if we're 82544 running in PCI-X because we'll
1441 * need this to apply a workaround later in the send path. */
1442 if (hw->mac_type == e1000_82544 &&
1443 hw->bus_type == e1000_bus_type_pcix)
1444 adapter->pcix_82544 = 1;
1446 E1000_WRITE_REG(hw, TCTL, tctl);
1451 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1452 * @adapter: board private structure
1453 * @rxdr: rx descriptor ring (for a specific queue) to setup
1455 * Returns 0 on success, negative on failure
1459 e1000_setup_rx_resources(struct e1000_adapter *adapter,
1460 struct e1000_rx_ring *rxdr)
1462 struct pci_dev *pdev = adapter->pdev;
1465 size = sizeof(struct e1000_buffer) * rxdr->count;
1466 rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus));
1467 if (!rxdr->buffer_info) {
1469 "Unable to allocate memory for the receive descriptor ring\n");
1472 memset(rxdr->buffer_info, 0, size);
1474 size = sizeof(struct e1000_ps_page) * rxdr->count;
1475 rxdr->ps_page = kmalloc(size, GFP_KERNEL);
1476 if (!rxdr->ps_page) {
1477 vfree(rxdr->buffer_info);
1479 "Unable to allocate memory for the receive descriptor ring\n");
1482 memset(rxdr->ps_page, 0, size);
1484 size = sizeof(struct e1000_ps_page_dma) * rxdr->count;
1485 rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL);
1486 if (!rxdr->ps_page_dma) {
1487 vfree(rxdr->buffer_info);
1488 kfree(rxdr->ps_page);
1490 "Unable to allocate memory for the receive descriptor ring\n");
1493 memset(rxdr->ps_page_dma, 0, size);
1495 if (adapter->hw.mac_type <= e1000_82547_rev_2)
1496 desc_len = sizeof(struct e1000_rx_desc);
1498 desc_len = sizeof(union e1000_rx_desc_packet_split);
1500 /* Round up to nearest 4K */
1502 rxdr->size = rxdr->count * desc_len;
1503 E1000_ROUNDUP(rxdr->size, 4096);
1505 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1509 "Unable to allocate memory for the receive descriptor ring\n");
1511 vfree(rxdr->buffer_info);
1512 kfree(rxdr->ps_page);
1513 kfree(rxdr->ps_page_dma);
1517 /* Fix for errata 23, can't cross 64kB boundary */
1518 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1519 void *olddesc = rxdr->desc;
1520 dma_addr_t olddma = rxdr->dma;
1521 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1522 "at %p\n", rxdr->size, rxdr->desc);
1523 /* Try again, without freeing the previous */
1524 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1525 /* Failed allocation, critical failure */
1527 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1529 "Unable to allocate memory "
1530 "for the receive descriptor ring\n");
1531 goto setup_rx_desc_die;
1534 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1536 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1538 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1540 "Unable to allocate aligned memory "
1541 "for the receive descriptor ring\n");
1542 goto setup_rx_desc_die;
1544 /* Free old allocation, new allocation was successful */
1545 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1548 memset(rxdr->desc, 0, rxdr->size);
1550 rxdr->next_to_clean = 0;
1551 rxdr->next_to_use = 0;
1557 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1558 * (Descriptors) for all queues
1559 * @adapter: board private structure
1561 * If this function returns with an error, then it's possible one or
1562 * more of the rings is populated (while the rest are not). It is the
1563 * callers duty to clean those orphaned rings.
1565 * Return 0 on success, negative on failure
1569 e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
1573 for (i = 0; i < adapter->num_rx_queues; i++) {
1574 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1577 "Allocation for Rx Queue %u failed\n", i);
1586 * e1000_setup_rctl - configure the receive control registers
1587 * @adapter: Board private structure
1589 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1590 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1592 e1000_setup_rctl(struct e1000_adapter *adapter)
1594 uint32_t rctl, rfctl;
1595 uint32_t psrctl = 0;
1596 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1600 rctl = E1000_READ_REG(&adapter->hw, RCTL);
1602 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1604 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1605 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1606 (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
1608 if (adapter->hw.mac_type > e1000_82543)
1609 rctl |= E1000_RCTL_SECRC;
1611 if (adapter->hw.tbi_compatibility_on == 1)
1612 rctl |= E1000_RCTL_SBP;
1614 rctl &= ~E1000_RCTL_SBP;
1616 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1617 rctl &= ~E1000_RCTL_LPE;
1619 rctl |= E1000_RCTL_LPE;
1621 /* Setup buffer sizes */
1622 if (adapter->hw.mac_type >= e1000_82571) {
1623 /* We can now specify buffers in 1K increments.
1624 * BSIZE and BSEX are ignored in this case. */
1625 rctl |= adapter->rx_buffer_len << 0x11;
1627 rctl &= ~E1000_RCTL_SZ_4096;
1628 rctl |= E1000_RCTL_BSEX;
1629 switch (adapter->rx_buffer_len) {
1630 case E1000_RXBUFFER_2048:
1632 rctl |= E1000_RCTL_SZ_2048;
1633 rctl &= ~E1000_RCTL_BSEX;
1635 case E1000_RXBUFFER_4096:
1636 rctl |= E1000_RCTL_SZ_4096;
1638 case E1000_RXBUFFER_8192:
1639 rctl |= E1000_RCTL_SZ_8192;
1641 case E1000_RXBUFFER_16384:
1642 rctl |= E1000_RCTL_SZ_16384;
1647 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1648 /* 82571 and greater support packet-split where the protocol
1649 * header is placed in skb->data and the packet data is
1650 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1651 * In the case of a non-split, skb->data is linearly filled,
1652 * followed by the page buffers. Therefore, skb->data is
1653 * sized to hold the largest protocol header.
1655 pages = PAGE_USE_COUNT(adapter->netdev->mtu);
1656 if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) &&
1658 adapter->rx_ps_pages = pages;
1660 adapter->rx_ps_pages = 0;
1662 if (adapter->rx_ps_pages) {
1663 /* Configure extra packet-split registers */
1664 rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
1665 rfctl |= E1000_RFCTL_EXTEN;
1666 /* disable IPv6 packet split support */
1667 rfctl |= E1000_RFCTL_IPV6_DIS;
1668 E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
1670 rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC;
1672 psrctl |= adapter->rx_ps_bsize0 >>
1673 E1000_PSRCTL_BSIZE0_SHIFT;
1675 switch (adapter->rx_ps_pages) {
1677 psrctl |= PAGE_SIZE <<
1678 E1000_PSRCTL_BSIZE3_SHIFT;
1680 psrctl |= PAGE_SIZE <<
1681 E1000_PSRCTL_BSIZE2_SHIFT;
1683 psrctl |= PAGE_SIZE >>
1684 E1000_PSRCTL_BSIZE1_SHIFT;
1688 E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl);
1691 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
1695 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1696 * @adapter: board private structure
1698 * Configure the Rx unit of the MAC after a reset.
1702 e1000_configure_rx(struct e1000_adapter *adapter)
1705 struct e1000_hw *hw = &adapter->hw;
1706 uint32_t rdlen, rctl, rxcsum, ctrl_ext;
1708 if (adapter->rx_ps_pages) {
1709 rdlen = adapter->rx_ring[0].count *
1710 sizeof(union e1000_rx_desc_packet_split);
1711 adapter->clean_rx = e1000_clean_rx_irq_ps;
1712 adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
1714 rdlen = adapter->rx_ring[0].count *
1715 sizeof(struct e1000_rx_desc);
1716 adapter->clean_rx = e1000_clean_rx_irq;
1717 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1720 /* disable receives while setting up the descriptors */
1721 rctl = E1000_READ_REG(hw, RCTL);
1722 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
1724 /* set the Receive Delay Timer Register */
1725 E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
1727 if (hw->mac_type >= e1000_82540) {
1728 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay);
1729 if (adapter->itr > 1)
1730 E1000_WRITE_REG(hw, ITR,
1731 1000000000 / (adapter->itr * 256));
1734 if (hw->mac_type >= e1000_82571) {
1735 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1736 /* Reset delay timers after every interrupt */
1737 ctrl_ext |= E1000_CTRL_EXT_CANC;
1738 #ifdef CONFIG_E1000_NAPI
1739 /* Auto-Mask interrupts upon ICR read. */
1740 ctrl_ext |= E1000_CTRL_EXT_IAME;
1742 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1743 E1000_WRITE_REG(hw, IAM, ~0);
1744 E1000_WRITE_FLUSH(hw);
1747 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1748 * the Base and Length of the Rx Descriptor Ring */
1749 switch (adapter->num_rx_queues) {
1752 rdba = adapter->rx_ring[0].dma;
1753 E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
1754 E1000_WRITE_REG(hw, RDBAH, (rdba >> 32));
1755 E1000_WRITE_REG(hw, RDLEN, rdlen);
1756 E1000_WRITE_REG(hw, RDH, 0);
1757 E1000_WRITE_REG(hw, RDT, 0);
1758 adapter->rx_ring[0].rdh = E1000_RDH;
1759 adapter->rx_ring[0].rdt = E1000_RDT;
1763 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1764 if (hw->mac_type >= e1000_82543) {
1765 rxcsum = E1000_READ_REG(hw, RXCSUM);
1766 if (adapter->rx_csum == TRUE) {
1767 rxcsum |= E1000_RXCSUM_TUOFL;
1769 /* Enable 82571 IPv4 payload checksum for UDP fragments
1770 * Must be used in conjunction with packet-split. */
1771 if ((hw->mac_type >= e1000_82571) &&
1772 (adapter->rx_ps_pages)) {
1773 rxcsum |= E1000_RXCSUM_IPPCSE;
1776 rxcsum &= ~E1000_RXCSUM_TUOFL;
1777 /* don't need to clear IPPCSE as it defaults to 0 */
1779 E1000_WRITE_REG(hw, RXCSUM, rxcsum);
1782 if (hw->mac_type == e1000_82573)
1783 E1000_WRITE_REG(hw, ERT, 0x0100);
1785 /* Enable Receives */
1786 E1000_WRITE_REG(hw, RCTL, rctl);
1790 * e1000_free_tx_resources - Free Tx Resources per Queue
1791 * @adapter: board private structure
1792 * @tx_ring: Tx descriptor ring for a specific queue
1794 * Free all transmit software resources
1798 e1000_free_tx_resources(struct e1000_adapter *adapter,
1799 struct e1000_tx_ring *tx_ring)
1801 struct pci_dev *pdev = adapter->pdev;
1803 e1000_clean_tx_ring(adapter, tx_ring);
1805 vfree(tx_ring->buffer_info);
1806 tx_ring->buffer_info = NULL;
1808 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1810 tx_ring->desc = NULL;
1814 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1815 * @adapter: board private structure
1817 * Free all transmit software resources
1821 e1000_free_all_tx_resources(struct e1000_adapter *adapter)
1825 for (i = 0; i < adapter->num_tx_queues; i++)
1826 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1830 e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
1831 struct e1000_buffer *buffer_info)
1833 if (buffer_info->dma) {
1834 pci_unmap_page(adapter->pdev,
1836 buffer_info->length,
1839 if (buffer_info->skb)
1840 dev_kfree_skb_any(buffer_info->skb);
1841 memset(buffer_info, 0, sizeof(struct e1000_buffer));
1845 * e1000_clean_tx_ring - Free Tx Buffers
1846 * @adapter: board private structure
1847 * @tx_ring: ring to be cleaned
1851 e1000_clean_tx_ring(struct e1000_adapter *adapter,
1852 struct e1000_tx_ring *tx_ring)
1854 struct e1000_buffer *buffer_info;
1858 /* Free all the Tx ring sk_buffs */
1860 for (i = 0; i < tx_ring->count; i++) {
1861 buffer_info = &tx_ring->buffer_info[i];
1862 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
1865 size = sizeof(struct e1000_buffer) * tx_ring->count;
1866 memset(tx_ring->buffer_info, 0, size);
1868 /* Zero out the descriptor ring */
1870 memset(tx_ring->desc, 0, tx_ring->size);
1872 tx_ring->next_to_use = 0;
1873 tx_ring->next_to_clean = 0;
1874 tx_ring->last_tx_tso = 0;
1876 writel(0, adapter->hw.hw_addr + tx_ring->tdh);
1877 writel(0, adapter->hw.hw_addr + tx_ring->tdt);
1881 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1882 * @adapter: board private structure
1886 e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
1890 for (i = 0; i < adapter->num_tx_queues; i++)
1891 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1895 * e1000_free_rx_resources - Free Rx Resources
1896 * @adapter: board private structure
1897 * @rx_ring: ring to clean the resources from
1899 * Free all receive software resources
1903 e1000_free_rx_resources(struct e1000_adapter *adapter,
1904 struct e1000_rx_ring *rx_ring)
1906 struct pci_dev *pdev = adapter->pdev;
1908 e1000_clean_rx_ring(adapter, rx_ring);
1910 vfree(rx_ring->buffer_info);
1911 rx_ring->buffer_info = NULL;
1912 kfree(rx_ring->ps_page);
1913 rx_ring->ps_page = NULL;
1914 kfree(rx_ring->ps_page_dma);
1915 rx_ring->ps_page_dma = NULL;
1917 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
1919 rx_ring->desc = NULL;
1923 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1924 * @adapter: board private structure
1926 * Free all receive software resources
1930 e1000_free_all_rx_resources(struct e1000_adapter *adapter)
1934 for (i = 0; i < adapter->num_rx_queues; i++)
1935 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
1939 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1940 * @adapter: board private structure
1941 * @rx_ring: ring to free buffers from
1945 e1000_clean_rx_ring(struct e1000_adapter *adapter,
1946 struct e1000_rx_ring *rx_ring)
1948 struct e1000_buffer *buffer_info;
1949 struct e1000_ps_page *ps_page;
1950 struct e1000_ps_page_dma *ps_page_dma;
1951 struct pci_dev *pdev = adapter->pdev;
1955 /* Free all the Rx ring sk_buffs */
1956 for (i = 0; i < rx_ring->count; i++) {
1957 buffer_info = &rx_ring->buffer_info[i];
1958 if (buffer_info->skb) {
1959 pci_unmap_single(pdev,
1961 buffer_info->length,
1962 PCI_DMA_FROMDEVICE);
1964 dev_kfree_skb(buffer_info->skb);
1965 buffer_info->skb = NULL;
1967 ps_page = &rx_ring->ps_page[i];
1968 ps_page_dma = &rx_ring->ps_page_dma[i];
1969 for (j = 0; j < adapter->rx_ps_pages; j++) {
1970 if (!ps_page->ps_page[j]) break;
1971 pci_unmap_page(pdev,
1972 ps_page_dma->ps_page_dma[j],
1973 PAGE_SIZE, PCI_DMA_FROMDEVICE);
1974 ps_page_dma->ps_page_dma[j] = 0;
1975 put_page(ps_page->ps_page[j]);
1976 ps_page->ps_page[j] = NULL;
1980 size = sizeof(struct e1000_buffer) * rx_ring->count;
1981 memset(rx_ring->buffer_info, 0, size);
1982 size = sizeof(struct e1000_ps_page) * rx_ring->count;
1983 memset(rx_ring->ps_page, 0, size);
1984 size = sizeof(struct e1000_ps_page_dma) * rx_ring->count;
1985 memset(rx_ring->ps_page_dma, 0, size);
1987 /* Zero out the descriptor ring */
1989 memset(rx_ring->desc, 0, rx_ring->size);
1991 rx_ring->next_to_clean = 0;
1992 rx_ring->next_to_use = 0;
1994 writel(0, adapter->hw.hw_addr + rx_ring->rdh);
1995 writel(0, adapter->hw.hw_addr + rx_ring->rdt);
1999 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2000 * @adapter: board private structure
2004 e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
2008 for (i = 0; i < adapter->num_rx_queues; i++)
2009 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
2012 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2013 * and memory write and invalidate disabled for certain operations
2016 e1000_enter_82542_rst(struct e1000_adapter *adapter)
2018 struct net_device *netdev = adapter->netdev;
2021 e1000_pci_clear_mwi(&adapter->hw);
2023 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2024 rctl |= E1000_RCTL_RST;
2025 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2026 E1000_WRITE_FLUSH(&adapter->hw);
2029 if (netif_running(netdev))
2030 e1000_clean_all_rx_rings(adapter);
2034 e1000_leave_82542_rst(struct e1000_adapter *adapter)
2036 struct net_device *netdev = adapter->netdev;
2039 rctl = E1000_READ_REG(&adapter->hw, RCTL);
2040 rctl &= ~E1000_RCTL_RST;
2041 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
2042 E1000_WRITE_FLUSH(&adapter->hw);
2045 if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
2046 e1000_pci_set_mwi(&adapter->hw);
2048 if (netif_running(netdev)) {
2049 /* No need to loop, because 82542 supports only 1 queue */
2050 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
2051 e1000_configure_rx(adapter);
2052 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
2057 * e1000_set_mac - Change the Ethernet Address of the NIC
2058 * @netdev: network interface device structure
2059 * @p: pointer to an address structure
2061 * Returns 0 on success, negative on failure
2065 e1000_set_mac(struct net_device *netdev, void *p)
2067 struct e1000_adapter *adapter = netdev_priv(netdev);
2068 struct sockaddr *addr = p;
2070 if (!is_valid_ether_addr(addr->sa_data))
2071 return -EADDRNOTAVAIL;
2073 /* 82542 2.0 needs to be in reset to write receive address registers */
2075 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2076 e1000_enter_82542_rst(adapter);
2078 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2079 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
2081 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2083 /* With 82571 controllers, LAA may be overwritten (with the default)
2084 * due to controller reset from the other port. */
2085 if (adapter->hw.mac_type == e1000_82571) {
2086 /* activate the work around */
2087 adapter->hw.laa_is_present = 1;
2089 /* Hold a copy of the LAA in RAR[14] This is done so that
2090 * between the time RAR[0] gets clobbered and the time it
2091 * gets fixed (in e1000_watchdog), the actual LAA is in one
2092 * of the RARs and no incoming packets directed to this port
2093 * are dropped. Eventaully the LAA will be in RAR[0] and
2095 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
2096 E1000_RAR_ENTRIES - 1);
2099 if (adapter->hw.mac_type == e1000_82542_rev2_0)
2100 e1000_leave_82542_rst(adapter);
2106 * e1000_set_multi - Multicast and Promiscuous mode set
2107 * @netdev: network interface device structure
2109 * The set_multi entry point is called whenever the multicast address
2110 * list or the network interface flags are updated. This routine is
2111 * responsible for configuring the hardware for proper multicast,
2112 * promiscuous mode, and all-multi behavior.
2116 e1000_set_multi(struct net_device *netdev)
2118 struct e1000_adapter *adapter = netdev_priv(netdev);
2119 struct e1000_hw *hw = &adapter->hw;
2120 struct dev_mc_list *mc_ptr;
2122 uint32_t hash_value;
2123 int i, rar_entries = E1000_RAR_ENTRIES;
2125 /* reserve RAR[14] for LAA over-write work-around */
2126 if (adapter->hw.mac_type == e1000_82571)
2129 /* Check for Promiscuous and All Multicast modes */
2131 rctl = E1000_READ_REG(hw, RCTL);
2133 if (netdev->flags & IFF_PROMISC) {
2134 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
2135 } else if (netdev->flags & IFF_ALLMULTI) {
2136 rctl |= E1000_RCTL_MPE;
2137 rctl &= ~E1000_RCTL_UPE;
2139 rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
2142 E1000_WRITE_REG(hw, RCTL, rctl);
2144 /* 82542 2.0 needs to be in reset to write receive address registers */
2146 if (hw->mac_type == e1000_82542_rev2_0)
2147 e1000_enter_82542_rst(adapter);
2149 /* load the first 14 multicast address into the exact filters 1-14
2150 * RAR 0 is used for the station MAC adddress
2151 * if there are not 14 addresses, go ahead and clear the filters
2152 * -- with 82571 controllers only 0-13 entries are filled here
2154 mc_ptr = netdev->mc_list;
2156 for (i = 1; i < rar_entries; i++) {
2158 e1000_rar_set(hw, mc_ptr->dmi_addr, i);
2159 mc_ptr = mc_ptr->next;
2161 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
2162 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
2166 /* clear the old settings from the multicast hash table */
2168 for (i = 0; i < E1000_NUM_MTA_REGISTERS; i++)
2169 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
2171 /* load any remaining addresses into the hash table */
2173 for (; mc_ptr; mc_ptr = mc_ptr->next) {
2174 hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr);
2175 e1000_mta_set(hw, hash_value);
2178 if (hw->mac_type == e1000_82542_rev2_0)
2179 e1000_leave_82542_rst(adapter);
2182 /* Need to wait a few seconds after link up to get diagnostic information from
2186 e1000_update_phy_info(unsigned long data)
2188 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2189 e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
2193 * e1000_82547_tx_fifo_stall - Timer Call-back
2194 * @data: pointer to adapter cast into an unsigned long
2198 e1000_82547_tx_fifo_stall(unsigned long data)
2200 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2201 struct net_device *netdev = adapter->netdev;
2204 if (atomic_read(&adapter->tx_fifo_stall)) {
2205 if ((E1000_READ_REG(&adapter->hw, TDT) ==
2206 E1000_READ_REG(&adapter->hw, TDH)) &&
2207 (E1000_READ_REG(&adapter->hw, TDFT) ==
2208 E1000_READ_REG(&adapter->hw, TDFH)) &&
2209 (E1000_READ_REG(&adapter->hw, TDFTS) ==
2210 E1000_READ_REG(&adapter->hw, TDFHS))) {
2211 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2212 E1000_WRITE_REG(&adapter->hw, TCTL,
2213 tctl & ~E1000_TCTL_EN);
2214 E1000_WRITE_REG(&adapter->hw, TDFT,
2215 adapter->tx_head_addr);
2216 E1000_WRITE_REG(&adapter->hw, TDFH,
2217 adapter->tx_head_addr);
2218 E1000_WRITE_REG(&adapter->hw, TDFTS,
2219 adapter->tx_head_addr);
2220 E1000_WRITE_REG(&adapter->hw, TDFHS,
2221 adapter->tx_head_addr);
2222 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2223 E1000_WRITE_FLUSH(&adapter->hw);
2225 adapter->tx_fifo_head = 0;
2226 atomic_set(&adapter->tx_fifo_stall, 0);
2227 netif_wake_queue(netdev);
2229 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2235 * e1000_watchdog - Timer Call-back
2236 * @data: pointer to adapter cast into an unsigned long
2239 e1000_watchdog(unsigned long data)
2241 struct e1000_adapter *adapter = (struct e1000_adapter *) data;
2243 /* Do the rest outside of interrupt context */
2244 schedule_work(&adapter->watchdog_task);
2248 e1000_watchdog_task(struct e1000_adapter *adapter)
2250 struct net_device *netdev = adapter->netdev;
2251 struct e1000_tx_ring *txdr = adapter->tx_ring;
2252 uint32_t link, tctl;
2254 e1000_check_for_link(&adapter->hw);
2255 if (adapter->hw.mac_type == e1000_82573) {
2256 e1000_enable_tx_pkt_filtering(&adapter->hw);
2257 if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)
2258 e1000_update_mng_vlan(adapter);
2261 if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
2262 !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
2263 link = !adapter->hw.serdes_link_down;
2265 link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
2268 if (!netif_carrier_ok(netdev)) {
2269 e1000_get_speed_and_duplex(&adapter->hw,
2270 &adapter->link_speed,
2271 &adapter->link_duplex);
2273 DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n",
2274 adapter->link_speed,
2275 adapter->link_duplex == FULL_DUPLEX ?
2276 "Full Duplex" : "Half Duplex");
2278 /* tweak tx_queue_len according to speed/duplex
2279 * and adjust the timeout factor */
2280 netdev->tx_queue_len = adapter->tx_queue_len;
2281 adapter->tx_timeout_factor = 1;
2283 switch (adapter->link_speed) {
2286 netdev->tx_queue_len = 10;
2287 adapter->tx_timeout_factor = 8;
2291 netdev->tx_queue_len = 100;
2292 /* maybe add some timeout factor ? */
2296 if ((adapter->hw.mac_type == e1000_82571 ||
2297 adapter->hw.mac_type == e1000_82572) &&
2298 adapter->txb2b == 0) {
2299 #define SPEED_MODE_BIT (1 << 21)
2301 tarc0 = E1000_READ_REG(&adapter->hw, TARC0);
2302 tarc0 &= ~SPEED_MODE_BIT;
2303 E1000_WRITE_REG(&adapter->hw, TARC0, tarc0);
2307 /* disable TSO for pcie and 10/100 speeds, to avoid
2308 * some hardware issues */
2309 if (!adapter->tso_force &&
2310 adapter->hw.bus_type == e1000_bus_type_pci_express){
2311 switch (adapter->link_speed) {
2315 "10/100 speed: disabling TSO\n");
2316 netdev->features &= ~NETIF_F_TSO;
2319 netdev->features |= NETIF_F_TSO;
2328 /* enable transmits in the hardware, need to do this
2329 * after setting TARC0 */
2330 tctl = E1000_READ_REG(&adapter->hw, TCTL);
2331 tctl |= E1000_TCTL_EN;
2332 E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
2334 netif_carrier_on(netdev);
2335 netif_wake_queue(netdev);
2336 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2337 adapter->smartspeed = 0;
2340 if (netif_carrier_ok(netdev)) {
2341 adapter->link_speed = 0;
2342 adapter->link_duplex = 0;
2343 DPRINTK(LINK, INFO, "NIC Link is Down\n");
2344 netif_carrier_off(netdev);
2345 netif_stop_queue(netdev);
2346 mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
2349 e1000_smartspeed(adapter);
2352 e1000_update_stats(adapter);
2354 adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
2355 adapter->tpt_old = adapter->stats.tpt;
2356 adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
2357 adapter->colc_old = adapter->stats.colc;
2359 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2360 adapter->gorcl_old = adapter->stats.gorcl;
2361 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2362 adapter->gotcl_old = adapter->stats.gotcl;
2364 e1000_update_adaptive(&adapter->hw);
2366 if (!netif_carrier_ok(netdev)) {
2367 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
2368 /* We've lost link, so the controller stops DMA,
2369 * but we've got queued Tx work that's never going
2370 * to get done, so reset controller to flush Tx.
2371 * (Do the reset outside of interrupt context). */
2372 schedule_work(&adapter->tx_timeout_task);
2376 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2377 if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) {
2378 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2379 * asymmetrical Tx or Rx gets ITR=8000; everyone
2380 * else is between 2000-8000. */
2381 uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000;
2382 uint32_t dif = (adapter->gotcl > adapter->gorcl ?
2383 adapter->gotcl - adapter->gorcl :
2384 adapter->gorcl - adapter->gotcl) / 10000;
2385 uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
2386 E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256));
2389 /* Cause software interrupt to ensure rx ring is cleaned */
2390 E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
2392 /* Force detection of hung controller every watchdog period */
2393 adapter->detect_tx_hung = TRUE;
2395 /* With 82571 controllers, LAA may be overwritten due to controller
2396 * reset from the other port. Set the appropriate LAA in RAR[0] */
2397 if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
2398 e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
2400 /* Reset the timer */
2401 mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
2404 #define E1000_TX_FLAGS_CSUM 0x00000001
2405 #define E1000_TX_FLAGS_VLAN 0x00000002
2406 #define E1000_TX_FLAGS_TSO 0x00000004
2407 #define E1000_TX_FLAGS_IPV4 0x00000008
2408 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2409 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2412 e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2413 struct sk_buff *skb)
2416 struct e1000_context_desc *context_desc;
2417 struct e1000_buffer *buffer_info;
2419 uint32_t cmd_length = 0;
2420 uint16_t ipcse = 0, tucse, mss;
2421 uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
2424 if (skb_shinfo(skb)->tso_size) {
2425 if (skb_header_cloned(skb)) {
2426 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2431 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2432 mss = skb_shinfo(skb)->tso_size;
2433 if (skb->protocol == ntohs(ETH_P_IP)) {
2434 skb->nh.iph->tot_len = 0;
2435 skb->nh.iph->check = 0;
2437 ~csum_tcpudp_magic(skb->nh.iph->saddr,
2442 cmd_length = E1000_TXD_CMD_IP;
2443 ipcse = skb->h.raw - skb->data - 1;
2444 #ifdef NETIF_F_TSO_IPV6
2445 } else if (skb->protocol == ntohs(ETH_P_IPV6)) {
2446 skb->nh.ipv6h->payload_len = 0;
2448 ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
2449 &skb->nh.ipv6h->daddr,
2456 ipcss = skb->nh.raw - skb->data;
2457 ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data;
2458 tucss = skb->h.raw - skb->data;
2459 tucso = (void *)&(skb->h.th->check) - (void *)skb->data;
2462 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2463 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
2465 i = tx_ring->next_to_use;
2466 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2467 buffer_info = &tx_ring->buffer_info[i];
2469 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2470 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2471 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2472 context_desc->upper_setup.tcp_fields.tucss = tucss;
2473 context_desc->upper_setup.tcp_fields.tucso = tucso;
2474 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2475 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2476 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2477 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2479 buffer_info->time_stamp = jiffies;
2481 if (++i == tx_ring->count) i = 0;
2482 tx_ring->next_to_use = i;
2491 static inline boolean_t
2492 e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2493 struct sk_buff *skb)
2495 struct e1000_context_desc *context_desc;
2496 struct e1000_buffer *buffer_info;
2500 if (likely(skb->ip_summed == CHECKSUM_HW)) {
2501 css = skb->h.raw - skb->data;
2503 i = tx_ring->next_to_use;
2504 buffer_info = &tx_ring->buffer_info[i];
2505 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
2507 context_desc->upper_setup.tcp_fields.tucss = css;
2508 context_desc->upper_setup.tcp_fields.tucso = css + skb->csum;
2509 context_desc->upper_setup.tcp_fields.tucse = 0;
2510 context_desc->tcp_seg_setup.data = 0;
2511 context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
2513 buffer_info->time_stamp = jiffies;
2515 if (unlikely(++i == tx_ring->count)) i = 0;
2516 tx_ring->next_to_use = i;
2524 #define E1000_MAX_TXD_PWR 12
2525 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2528 e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2529 struct sk_buff *skb, unsigned int first, unsigned int max_per_txd,
2530 unsigned int nr_frags, unsigned int mss)
2532 struct e1000_buffer *buffer_info;
2533 unsigned int len = skb->len;
2534 unsigned int offset = 0, size, count = 0, i;
2536 len -= skb->data_len;
2538 i = tx_ring->next_to_use;
2541 buffer_info = &tx_ring->buffer_info[i];
2542 size = min(len, max_per_txd);
2544 /* Workaround for Controller erratum --
2545 * descriptor for non-tso packet in a linear SKB that follows a
2546 * tso gets written back prematurely before the data is fully
2547 * DMAd to the controller */
2548 if (!skb->data_len && tx_ring->last_tx_tso &&
2549 !skb_shinfo(skb)->tso_size) {
2550 tx_ring->last_tx_tso = 0;
2554 /* Workaround for premature desc write-backs
2555 * in TSO mode. Append 4-byte sentinel desc */
2556 if (unlikely(mss && !nr_frags && size == len && size > 8))
2559 /* work-around for errata 10 and it applies
2560 * to all controllers in PCI-X mode
2561 * The fix is to make sure that the first descriptor of a
2562 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2564 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2565 (size > 2015) && count == 0))
2568 /* Workaround for potential 82544 hang in PCI-X. Avoid
2569 * terminating buffers within evenly-aligned dwords. */
2570 if (unlikely(adapter->pcix_82544 &&
2571 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2575 buffer_info->length = size;
2577 pci_map_single(adapter->pdev,
2581 buffer_info->time_stamp = jiffies;
2586 if (unlikely(++i == tx_ring->count)) i = 0;
2589 for (f = 0; f < nr_frags; f++) {
2590 struct skb_frag_struct *frag;
2592 frag = &skb_shinfo(skb)->frags[f];
2594 offset = frag->page_offset;
2597 buffer_info = &tx_ring->buffer_info[i];
2598 size = min(len, max_per_txd);
2600 /* Workaround for premature desc write-backs
2601 * in TSO mode. Append 4-byte sentinel desc */
2602 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
2605 /* Workaround for potential 82544 hang in PCI-X.
2606 * Avoid terminating buffers within evenly-aligned
2608 if (unlikely(adapter->pcix_82544 &&
2609 !((unsigned long)(frag->page+offset+size-1) & 4) &&
2613 buffer_info->length = size;
2615 pci_map_page(adapter->pdev,
2620 buffer_info->time_stamp = jiffies;
2625 if (unlikely(++i == tx_ring->count)) i = 0;
2629 i = (i == 0) ? tx_ring->count - 1 : i - 1;
2630 tx_ring->buffer_info[i].skb = skb;
2631 tx_ring->buffer_info[first].next_to_watch = i;
2637 e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
2638 int tx_flags, int count)
2640 struct e1000_tx_desc *tx_desc = NULL;
2641 struct e1000_buffer *buffer_info;
2642 uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
2645 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
2646 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
2648 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2650 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2651 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
2654 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
2655 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
2656 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
2659 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
2660 txd_lower |= E1000_TXD_CMD_VLE;
2661 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
2664 i = tx_ring->next_to_use;
2667 buffer_info = &tx_ring->buffer_info[i];
2668 tx_desc = E1000_TX_DESC(*tx_ring, i);
2669 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
2670 tx_desc->lower.data =
2671 cpu_to_le32(txd_lower | buffer_info->length);
2672 tx_desc->upper.data = cpu_to_le32(txd_upper);
2673 if (unlikely(++i == tx_ring->count)) i = 0;
2676 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
2678 /* Force memory writes to complete before letting h/w
2679 * know there are new descriptors to fetch. (Only
2680 * applicable for weak-ordered memory model archs,
2681 * such as IA-64). */
2684 tx_ring->next_to_use = i;
2685 writel(i, adapter->hw.hw_addr + tx_ring->tdt);
2689 * 82547 workaround to avoid controller hang in half-duplex environment.
2690 * The workaround is to avoid queuing a large packet that would span
2691 * the internal Tx FIFO ring boundary by notifying the stack to resend
2692 * the packet at a later time. This gives the Tx FIFO an opportunity to
2693 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2694 * to the beginning of the Tx FIFO.
2697 #define E1000_FIFO_HDR 0x10
2698 #define E1000_82547_PAD_LEN 0x3E0
2701 e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
2703 uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
2704 uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
2706 E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR);
2708 if (adapter->link_duplex != HALF_DUPLEX)
2709 goto no_fifo_stall_required;
2711 if (atomic_read(&adapter->tx_fifo_stall))
2714 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
2715 atomic_set(&adapter->tx_fifo_stall, 1);
2719 no_fifo_stall_required:
2720 adapter->tx_fifo_head += skb_fifo_len;
2721 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
2722 adapter->tx_fifo_head -= adapter->tx_fifo_size;
2726 #define MINIMUM_DHCP_PACKET_SIZE 282
2728 e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
2730 struct e1000_hw *hw = &adapter->hw;
2731 uint16_t length, offset;
2732 if (vlan_tx_tag_present(skb)) {
2733 if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
2734 ( adapter->hw.mng_cookie.status &
2735 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
2738 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
2739 struct ethhdr *eth = (struct ethhdr *) skb->data;
2740 if ((htons(ETH_P_IP) == eth->h_proto)) {
2741 const struct iphdr *ip =
2742 (struct iphdr *)((uint8_t *)skb->data+14);
2743 if (IPPROTO_UDP == ip->protocol) {
2744 struct udphdr *udp =
2745 (struct udphdr *)((uint8_t *)ip +
2747 if (ntohs(udp->dest) == 67) {
2748 offset = (uint8_t *)udp + 8 - skb->data;
2749 length = skb->len - offset;
2751 return e1000_mng_write_dhcp_info(hw,
2761 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2763 e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
2765 struct e1000_adapter *adapter = netdev_priv(netdev);
2766 struct e1000_tx_ring *tx_ring;
2767 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
2768 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
2769 unsigned int tx_flags = 0;
2770 unsigned int len = skb->len;
2771 unsigned long flags;
2772 unsigned int nr_frags = 0;
2773 unsigned int mss = 0;
2777 len -= skb->data_len;
2779 tx_ring = adapter->tx_ring;
2781 if (unlikely(skb->len <= 0)) {
2782 dev_kfree_skb_any(skb);
2783 return NETDEV_TX_OK;
2787 mss = skb_shinfo(skb)->tso_size;
2788 /* The controller does a simple calculation to
2789 * make sure there is enough room in the FIFO before
2790 * initiating the DMA for each buffer. The calc is:
2791 * 4 = ceil(buffer len/mss). To make sure we don't
2792 * overrun the FIFO, adjust the max buffer len if mss
2796 max_per_txd = min(mss << 2, max_per_txd);
2797 max_txd_pwr = fls(max_per_txd) - 1;
2799 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2800 * points to just header, pull a few bytes of payload from
2801 * frags into skb->data */
2802 hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));
2803 if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {
2804 switch (adapter->hw.mac_type) {
2805 unsigned int pull_size;
2809 pull_size = min((unsigned int)4, skb->data_len);
2810 if (!__pskb_pull_tail(skb, pull_size)) {
2812 "__pskb_pull_tail failed.\n");
2813 dev_kfree_skb_any(skb);
2816 len = skb->len - skb->data_len;
2825 /* reserve a descriptor for the offload context */
2826 if ((mss) || (skb->ip_summed == CHECKSUM_HW))
2830 if (skb->ip_summed == CHECKSUM_HW)
2835 /* Controller Erratum workaround */
2836 if (!skb->data_len && tx_ring->last_tx_tso &&
2837 !skb_shinfo(skb)->tso_size)
2841 count += TXD_USE_COUNT(len, max_txd_pwr);
2843 if (adapter->pcix_82544)
2846 /* work-around for errata 10 and it applies to all controllers
2847 * in PCI-X mode, so add one more descriptor to the count
2849 if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
2853 nr_frags = skb_shinfo(skb)->nr_frags;
2854 for (f = 0; f < nr_frags; f++)
2855 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
2857 if (adapter->pcix_82544)
2860 if (adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) )
2861 e1000_transfer_dhcp_info(adapter, skb);
2863 local_irq_save(flags);
2864 if (!spin_trylock(&tx_ring->tx_lock)) {
2865 /* Collision - tell upper layer to requeue */
2866 local_irq_restore(flags);
2867 return NETDEV_TX_LOCKED;
2870 /* need: count + 2 desc gap to keep tail from touching
2871 * head, otherwise try next time */
2872 if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) {
2873 netif_stop_queue(netdev);
2874 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2875 return NETDEV_TX_BUSY;
2878 if (unlikely(adapter->hw.mac_type == e1000_82547)) {
2879 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
2880 netif_stop_queue(netdev);
2881 mod_timer(&adapter->tx_fifo_stall_timer, jiffies);
2882 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2883 return NETDEV_TX_BUSY;
2887 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
2888 tx_flags |= E1000_TX_FLAGS_VLAN;
2889 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
2892 first = tx_ring->next_to_use;
2894 tso = e1000_tso(adapter, tx_ring, skb);
2896 dev_kfree_skb_any(skb);
2897 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2898 return NETDEV_TX_OK;
2902 tx_ring->last_tx_tso = 1;
2903 tx_flags |= E1000_TX_FLAGS_TSO;
2904 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
2905 tx_flags |= E1000_TX_FLAGS_CSUM;
2907 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2908 * 82571 hardware supports TSO capabilities for IPv6 as well...
2909 * no longer assume, we must. */
2910 if (likely(skb->protocol == ntohs(ETH_P_IP)))
2911 tx_flags |= E1000_TX_FLAGS_IPV4;
2913 e1000_tx_queue(adapter, tx_ring, tx_flags,
2914 e1000_tx_map(adapter, tx_ring, skb, first,
2915 max_per_txd, nr_frags, mss));
2917 netdev->trans_start = jiffies;
2919 /* Make sure there is space in the ring for the next send. */
2920 if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2))
2921 netif_stop_queue(netdev);
2923 spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
2924 return NETDEV_TX_OK;
2928 * e1000_tx_timeout - Respond to a Tx Hang
2929 * @netdev: network interface device structure
2933 e1000_tx_timeout(struct net_device *netdev)
2935 struct e1000_adapter *adapter = netdev_priv(netdev);
2937 /* Do the reset outside of interrupt context */
2938 schedule_work(&adapter->tx_timeout_task);
2942 e1000_tx_timeout_task(struct net_device *netdev)
2944 struct e1000_adapter *adapter = netdev_priv(netdev);
2946 adapter->tx_timeout_count++;
2947 e1000_down(adapter);
2952 * e1000_get_stats - Get System Network Statistics
2953 * @netdev: network interface device structure
2955 * Returns the address of the device statistics structure.
2956 * The statistics are actually updated from the timer callback.
2959 static struct net_device_stats *
2960 e1000_get_stats(struct net_device *netdev)
2962 struct e1000_adapter *adapter = netdev_priv(netdev);
2964 /* only return the current stats */
2965 return &adapter->net_stats;
2969 * e1000_change_mtu - Change the Maximum Transfer Unit
2970 * @netdev: network interface device structure
2971 * @new_mtu: new value for maximum frame size
2973 * Returns 0 on success, negative on failure
2977 e1000_change_mtu(struct net_device *netdev, int new_mtu)
2979 struct e1000_adapter *adapter = netdev_priv(netdev);
2980 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
2982 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
2983 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
2984 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
2988 /* Adapter-specific max frame size limits. */
2989 switch (adapter->hw.mac_type) {
2990 case e1000_82542_rev2_0:
2991 case e1000_82542_rev2_1:
2993 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
2994 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
3000 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3001 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3002 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
3007 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3012 if (adapter->hw.mac_type > e1000_82547_rev_2) {
3013 adapter->rx_buffer_len = max_frame;
3014 E1000_ROUNDUP(adapter->rx_buffer_len, 1024);
3016 if(unlikely((adapter->hw.mac_type < e1000_82543) &&
3017 (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) {
3018 DPRINTK(PROBE, ERR, "Jumbo Frames not supported "
3022 if(max_frame <= E1000_RXBUFFER_2048)
3023 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3024 else if(max_frame <= E1000_RXBUFFER_4096)
3025 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
3026 else if(max_frame <= E1000_RXBUFFER_8192)
3027 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
3028 else if(max_frame <= E1000_RXBUFFER_16384)
3029 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3033 netdev->mtu = new_mtu;
3035 if (netif_running(netdev)) {
3036 e1000_down(adapter);
3040 adapter->hw.max_frame_size = max_frame;
3046 * e1000_update_stats - Update the board statistics counters
3047 * @adapter: board private structure
3051 e1000_update_stats(struct e1000_adapter *adapter)
3053 struct e1000_hw *hw = &adapter->hw;
3054 unsigned long flags;
3057 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3059 spin_lock_irqsave(&adapter->stats_lock, flags);
3061 /* these counters are modified from e1000_adjust_tbi_stats,
3062 * called from the interrupt context, so they must only
3063 * be written while holding adapter->stats_lock
3066 adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
3067 adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
3068 adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
3069 adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
3070 adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
3071 adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
3072 adapter->stats.roc += E1000_READ_REG(hw, ROC);
3073 adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
3074 adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
3075 adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
3076 adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
3077 adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
3078 adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
3080 adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
3081 adapter->stats.mpc += E1000_READ_REG(hw, MPC);
3082 adapter->stats.scc += E1000_READ_REG(hw, SCC);
3083 adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
3084 adapter->stats.mcc += E1000_READ_REG(hw, MCC);
3085 adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
3086 adapter->stats.dc += E1000_READ_REG(hw, DC);
3087 adapter->stats.sec += E1000_READ_REG(hw, SEC);
3088 adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
3089 adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
3090 adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
3091 adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
3092 adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
3093 adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
3094 adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
3095 adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
3096 adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
3097 adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
3098 adapter->stats.ruc += E1000_READ_REG(hw, RUC);
3099 adapter->stats.rfc += E1000_READ_REG(hw, RFC);
3100 adapter->stats.rjc += E1000_READ_REG(hw, RJC);
3101 adapter->stats.torl += E1000_READ_REG(hw, TORL);
3102 adapter->stats.torh += E1000_READ_REG(hw, TORH);
3103 adapter->stats.totl += E1000_READ_REG(hw, TOTL);
3104 adapter->stats.toth += E1000_READ_REG(hw, TOTH);
3105 adapter->stats.tpr += E1000_READ_REG(hw, TPR);
3106 adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
3107 adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
3108 adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
3109 adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
3110 adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
3111 adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
3112 adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
3113 adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
3115 /* used for adaptive IFS */
3117 hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
3118 adapter->stats.tpt += hw->tx_packet_delta;
3119 hw->collision_delta = E1000_READ_REG(hw, COLC);
3120 adapter->stats.colc += hw->collision_delta;
3122 if (hw->mac_type >= e1000_82543) {
3123 adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
3124 adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
3125 adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
3126 adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
3127 adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
3128 adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
3130 if (hw->mac_type > e1000_82547_rev_2) {
3131 adapter->stats.iac += E1000_READ_REG(hw, IAC);
3132 adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC);
3133 adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC);
3134 adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC);
3135 adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC);
3136 adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC);
3137 adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC);
3138 adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC);
3139 adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC);
3142 /* Fill out the OS statistics structure */
3144 adapter->net_stats.rx_packets = adapter->stats.gprc;
3145 adapter->net_stats.tx_packets = adapter->stats.gptc;
3146 adapter->net_stats.rx_bytes = adapter->stats.gorcl;
3147 adapter->net_stats.tx_bytes = adapter->stats.gotcl;
3148 adapter->net_stats.multicast = adapter->stats.mprc;
3149 adapter->net_stats.collisions = adapter->stats.colc;
3153 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3154 adapter->stats.crcerrs + adapter->stats.algnerrc +
3155 adapter->stats.rlec + adapter->stats.cexterr;
3156 adapter->net_stats.rx_dropped = 0;
3157 adapter->net_stats.rx_length_errors = adapter->stats.rlec;
3158 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3159 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
3160 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3164 adapter->net_stats.tx_errors = adapter->stats.ecol +
3165 adapter->stats.latecol;
3166 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3167 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3168 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
3170 /* Tx Dropped needs to be maintained elsewhere */
3174 if (hw->media_type == e1000_media_type_copper) {
3175 if ((adapter->link_speed == SPEED_1000) &&
3176 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3177 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3178 adapter->phy_stats.idle_errors += phy_tmp;
3181 if ((hw->mac_type <= e1000_82546) &&
3182 (hw->phy_type == e1000_phy_m88) &&
3183 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3184 adapter->phy_stats.receive_errors += phy_tmp;
3187 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3191 * e1000_intr - Interrupt Handler
3192 * @irq: interrupt number
3193 * @data: pointer to a network interface device structure
3194 * @pt_regs: CPU registers structure
3198 e1000_intr(int irq, void *data, struct pt_regs *regs)
3200 struct net_device *netdev = data;
3201 struct e1000_adapter *adapter = netdev_priv(netdev);
3202 struct e1000_hw *hw = &adapter->hw;
3203 uint32_t icr = E1000_READ_REG(hw, ICR);
3204 #ifndef CONFIG_E1000_NAPI
3207 /* Interrupt Auto-Mask...upon reading ICR,
3208 * interrupts are masked. No need for the
3209 * IMC write, but it does mean we should
3210 * account for it ASAP. */
3211 if (likely(hw->mac_type >= e1000_82571))
3212 atomic_inc(&adapter->irq_sem);
3215 if (unlikely(!icr)) {
3216 #ifdef CONFIG_E1000_NAPI
3217 if (hw->mac_type >= e1000_82571)
3218 e1000_irq_enable(adapter);
3220 return IRQ_NONE; /* Not our interrupt */
3223 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
3224 hw->get_link_status = 1;
3225 mod_timer(&adapter->watchdog_timer, jiffies);
3228 #ifdef CONFIG_E1000_NAPI
3229 if (unlikely(hw->mac_type < e1000_82571)) {
3230 atomic_inc(&adapter->irq_sem);
3231 E1000_WRITE_REG(hw, IMC, ~0);
3232 E1000_WRITE_FLUSH(hw);
3234 if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0])))
3235 __netif_rx_schedule(&adapter->polling_netdev[0]);
3237 e1000_irq_enable(adapter);
3239 /* Writing IMC and IMS is needed for 82547.
3240 * Due to Hub Link bus being occupied, an interrupt
3241 * de-assertion message is not able to be sent.
3242 * When an interrupt assertion message is generated later,
3243 * two messages are re-ordered and sent out.
3244 * That causes APIC to think 82547 is in de-assertion
3245 * state, while 82547 is in assertion state, resulting
3246 * in dead lock. Writing IMC forces 82547 into
3247 * de-assertion state.
3249 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) {
3250 atomic_inc(&adapter->irq_sem);
3251 E1000_WRITE_REG(hw, IMC, ~0);
3254 for (i = 0; i < E1000_MAX_INTR; i++)
3255 if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
3256 !e1000_clean_tx_irq(adapter, adapter->tx_ring)))
3259 if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
3260 e1000_irq_enable(adapter);
3267 #ifdef CONFIG_E1000_NAPI
3269 * e1000_clean - NAPI Rx polling callback
3270 * @adapter: board private structure
3274 e1000_clean(struct net_device *poll_dev, int *budget)
3276 struct e1000_adapter *adapter;
3277 int work_to_do = min(*budget, poll_dev->quota);
3278 int tx_cleaned = 0, i = 0, work_done = 0;
3280 /* Must NOT use netdev_priv macro here. */
3281 adapter = poll_dev->priv;
3283 /* Keep link state information with original netdev */
3284 if (!netif_carrier_ok(adapter->netdev))
3287 while (poll_dev != &adapter->polling_netdev[i]) {
3289 if (unlikely(i == adapter->num_rx_queues))
3293 if (likely(adapter->num_tx_queues == 1)) {
3294 /* e1000_clean is called per-cpu. This lock protects
3295 * tx_ring[0] from being cleaned by multiple cpus
3296 * simultaneously. A failure obtaining the lock means
3297 * tx_ring[0] is currently being cleaned anyway. */
3298 if (spin_trylock(&adapter->tx_queue_lock)) {
3299 tx_cleaned = e1000_clean_tx_irq(adapter,
3300 &adapter->tx_ring[0]);
3301 spin_unlock(&adapter->tx_queue_lock);
3304 tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]);
3306 adapter->clean_rx(adapter, &adapter->rx_ring[i],
3307 &work_done, work_to_do);
3309 *budget -= work_done;
3310 poll_dev->quota -= work_done;
3312 /* If no Tx and not enough Rx work done, exit the polling mode */
3313 if ((!tx_cleaned && (work_done == 0)) ||
3314 !netif_running(adapter->netdev)) {
3316 netif_rx_complete(poll_dev);
3317 e1000_irq_enable(adapter);
3326 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3327 * @adapter: board private structure
3331 e1000_clean_tx_irq(struct e1000_adapter *adapter,
3332 struct e1000_tx_ring *tx_ring)
3334 struct net_device *netdev = adapter->netdev;
3335 struct e1000_tx_desc *tx_desc, *eop_desc;
3336 struct e1000_buffer *buffer_info;
3337 unsigned int i, eop;
3338 boolean_t cleaned = FALSE;
3340 i = tx_ring->next_to_clean;
3341 eop = tx_ring->buffer_info[i].next_to_watch;
3342 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3344 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
3345 for (cleaned = FALSE; !cleaned; ) {
3346 tx_desc = E1000_TX_DESC(*tx_ring, i);
3347 buffer_info = &tx_ring->buffer_info[i];
3348 cleaned = (i == eop);
3350 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
3351 memset(tx_desc, 0, sizeof(struct e1000_tx_desc));
3353 if (unlikely(++i == tx_ring->count)) i = 0;
3357 eop = tx_ring->buffer_info[i].next_to_watch;
3358 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3361 tx_ring->next_to_clean = i;
3363 spin_lock(&tx_ring->tx_lock);
3365 if (unlikely(cleaned && netif_queue_stopped(netdev) &&
3366 netif_carrier_ok(netdev)))
3367 netif_wake_queue(netdev);
3369 spin_unlock(&tx_ring->tx_lock);
3371 if (adapter->detect_tx_hung) {
3372 /* Detect a transmit hang in hardware, this serializes the
3373 * check with the clearing of time_stamp and movement of i */
3374 adapter->detect_tx_hung = FALSE;
3375 if (tx_ring->buffer_info[eop].dma &&
3376 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
3377 (adapter->tx_timeout_factor * HZ))
3378 && !(E1000_READ_REG(&adapter->hw, STATUS) &
3379 E1000_STATUS_TXOFF)) {
3381 /* detected Tx unit hang */
3382 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
3386 " next_to_use <%x>\n"
3387 " next_to_clean <%x>\n"
3388 "buffer_info[next_to_clean]\n"
3389 " time_stamp <%lx>\n"
3390 " next_to_watch <%x>\n"
3392 " next_to_watch.status <%x>\n",
3393 (unsigned long)((tx_ring - adapter->tx_ring) /
3394 sizeof(struct e1000_tx_ring)),
3395 readl(adapter->hw.hw_addr + tx_ring->tdh),
3396 readl(adapter->hw.hw_addr + tx_ring->tdt),
3397 tx_ring->next_to_use,
3398 tx_ring->next_to_clean,
3399 tx_ring->buffer_info[eop].time_stamp,
3402 eop_desc->upper.fields.status);
3403 netif_stop_queue(netdev);
3410 * e1000_rx_checksum - Receive Checksum Offload for 82543
3411 * @adapter: board private structure
3412 * @status_err: receive descriptor status and error fields
3413 * @csum: receive descriptor csum field
3414 * @sk_buff: socket buffer with received data
3418 e1000_rx_checksum(struct e1000_adapter *adapter,
3419 uint32_t status_err, uint32_t csum,
3420 struct sk_buff *skb)
3422 uint16_t status = (uint16_t)status_err;
3423 uint8_t errors = (uint8_t)(status_err >> 24);
3424 skb->ip_summed = CHECKSUM_NONE;
3426 /* 82543 or newer only */
3427 if (unlikely(adapter->hw.mac_type < e1000_82543)) return;
3428 /* Ignore Checksum bit is set */
3429 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
3430 /* TCP/UDP checksum error bit is set */
3431 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
3432 /* let the stack verify checksum errors */
3433 adapter->hw_csum_err++;
3436 /* TCP/UDP Checksum has not been calculated */
3437 if (adapter->hw.mac_type <= e1000_82547_rev_2) {
3438 if (!(status & E1000_RXD_STAT_TCPCS))
3441 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
3444 /* It must be a TCP or UDP packet with a valid checksum */
3445 if (likely(status & E1000_RXD_STAT_TCPCS)) {
3446 /* TCP checksum is good */
3447 skb->ip_summed = CHECKSUM_UNNECESSARY;
3448 } else if (adapter->hw.mac_type > e1000_82547_rev_2) {
3449 /* IP fragment with UDP payload */
3450 /* Hardware complements the payload checksum, so we undo it
3451 * and then put the value in host order for further stack use.
3453 csum = ntohl(csum ^ 0xFFFF);
3455 skb->ip_summed = CHECKSUM_HW;
3457 adapter->hw_csum_good++;
3461 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3462 * @adapter: board private structure
3466 #ifdef CONFIG_E1000_NAPI
3467 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3468 struct e1000_rx_ring *rx_ring,
3469 int *work_done, int work_to_do)
3471 e1000_clean_rx_irq(struct e1000_adapter *adapter,
3472 struct e1000_rx_ring *rx_ring)
3475 struct net_device *netdev = adapter->netdev;
3476 struct pci_dev *pdev = adapter->pdev;
3477 struct e1000_rx_desc *rx_desc, *next_rxd;
3478 struct e1000_buffer *buffer_info, *next_buffer;
3479 unsigned long flags;
3483 int cleaned_count = 0;
3484 boolean_t cleaned = FALSE;
3486 i = rx_ring->next_to_clean;
3487 rx_desc = E1000_RX_DESC(*rx_ring, i);
3488 buffer_info = &rx_ring->buffer_info[i];
3490 while (rx_desc->status & E1000_RXD_STAT_DD) {
3491 struct sk_buff *skb, *next_skb;
3493 #ifdef CONFIG_E1000_NAPI
3494 if (*work_done >= work_to_do)
3498 status = rx_desc->status;
3499 skb = buffer_info->skb;
3500 buffer_info->skb = NULL;
3502 if (++i == rx_ring->count) i = 0;
3503 next_rxd = E1000_RX_DESC(*rx_ring, i);
3504 next_buffer = &rx_ring->buffer_info[i];
3505 next_skb = next_buffer->skb;
3509 pci_unmap_single(pdev,
3511 buffer_info->length,
3512 PCI_DMA_FROMDEVICE);
3514 length = le16_to_cpu(rx_desc->length);
3516 if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
3517 /* All receives must fit into a single buffer */
3518 E1000_DBG("%s: Receive packet consumed multiple"
3519 " buffers\n", netdev->name);
3520 dev_kfree_skb_irq(skb);
3524 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
3525 last_byte = *(skb->data + length - 1);
3526 if (TBI_ACCEPT(&adapter->hw, status,
3527 rx_desc->errors, length, last_byte)) {
3528 spin_lock_irqsave(&adapter->stats_lock, flags);
3529 e1000_tbi_adjust_stats(&adapter->hw,
3532 spin_unlock_irqrestore(&adapter->stats_lock,
3536 dev_kfree_skb_irq(skb);
3541 /* code added for copybreak, this should improve
3542 * performance for small packets with large amounts
3543 * of reassembly being done in the stack */
3544 #define E1000_CB_LENGTH 256
3545 if (length < E1000_CB_LENGTH) {
3546 struct sk_buff *new_skb =
3547 dev_alloc_skb(length + NET_IP_ALIGN);
3549 skb_reserve(new_skb, NET_IP_ALIGN);
3550 new_skb->dev = netdev;
3551 memcpy(new_skb->data - NET_IP_ALIGN,
3552 skb->data - NET_IP_ALIGN,
3553 length + NET_IP_ALIGN);
3554 /* save the skb in buffer_info as good */
3555 buffer_info->skb = skb;
3557 skb_put(skb, length);
3560 skb_put(skb, length);
3562 /* end copybreak code */
3564 /* Receive Checksum Offload */
3565 e1000_rx_checksum(adapter,
3566 (uint32_t)(status) |
3567 ((uint32_t)(rx_desc->errors) << 24),
3568 rx_desc->csum, skb);
3570 skb->protocol = eth_type_trans(skb, netdev);
3571 #ifdef CONFIG_E1000_NAPI
3572 if (unlikely(adapter->vlgrp &&
3573 (status & E1000_RXD_STAT_VP))) {
3574 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3575 le16_to_cpu(rx_desc->special) &
3576 E1000_RXD_SPC_VLAN_MASK);
3578 netif_receive_skb(skb);
3580 #else /* CONFIG_E1000_NAPI */
3581 if (unlikely(adapter->vlgrp &&
3582 (status & E1000_RXD_STAT_VP))) {
3583 vlan_hwaccel_rx(skb, adapter->vlgrp,
3584 le16_to_cpu(rx_desc->special) &
3585 E1000_RXD_SPC_VLAN_MASK);
3589 #endif /* CONFIG_E1000_NAPI */
3590 netdev->last_rx = jiffies;
3593 rx_desc->status = 0;
3595 /* return some buffers to hardware, one at a time is too slow */
3596 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
3597 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3602 buffer_info = next_buffer;
3604 rx_ring->next_to_clean = i;
3606 cleaned_count = E1000_DESC_UNUSED(rx_ring);
3608 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3614 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3615 * @adapter: board private structure
3619 #ifdef CONFIG_E1000_NAPI
3620 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3621 struct e1000_rx_ring *rx_ring,
3622 int *work_done, int work_to_do)
3624 e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
3625 struct e1000_rx_ring *rx_ring)
3628 union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
3629 struct net_device *netdev = adapter->netdev;
3630 struct pci_dev *pdev = adapter->pdev;
3631 struct e1000_buffer *buffer_info, *next_buffer;
3632 struct e1000_ps_page *ps_page;
3633 struct e1000_ps_page_dma *ps_page_dma;
3634 struct sk_buff *skb, *next_skb;
3636 uint32_t length, staterr;
3637 int cleaned_count = 0;
3638 boolean_t cleaned = FALSE;
3640 i = rx_ring->next_to_clean;
3641 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3642 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
3643 buffer_info = &rx_ring->buffer_info[i];
3645 while (staterr & E1000_RXD_STAT_DD) {
3646 ps_page = &rx_ring->ps_page[i];
3647 ps_page_dma = &rx_ring->ps_page_dma[i];
3648 #ifdef CONFIG_E1000_NAPI
3649 if (unlikely(*work_done >= work_to_do))
3653 skb = buffer_info->skb;
3655 if (++i == rx_ring->count) i = 0;
3656 next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
3657 next_buffer = &rx_ring->buffer_info[i];
3658 next_skb = next_buffer->skb;
3662 pci_unmap_single(pdev, buffer_info->dma,
3663 buffer_info->length,
3664 PCI_DMA_FROMDEVICE);
3666 if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) {
3667 E1000_DBG("%s: Packet Split buffers didn't pick up"
3668 " the full packet\n", netdev->name);
3669 dev_kfree_skb_irq(skb);
3673 if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
3674 dev_kfree_skb_irq(skb);
3678 length = le16_to_cpu(rx_desc->wb.middle.length0);
3680 if (unlikely(!length)) {
3681 E1000_DBG("%s: Last part of the packet spanning"
3682 " multiple descriptors\n", netdev->name);
3683 dev_kfree_skb_irq(skb);
3688 skb_put(skb, length);
3690 for (j = 0; j < adapter->rx_ps_pages; j++) {
3691 if (!(length = le16_to_cpu(rx_desc->wb.upper.length[j])))
3694 pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j],
3695 PAGE_SIZE, PCI_DMA_FROMDEVICE);
3696 ps_page_dma->ps_page_dma[j] = 0;
3697 skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0,
3699 ps_page->ps_page[j] = NULL;
3701 skb->data_len += length;
3704 e1000_rx_checksum(adapter, staterr,
3705 rx_desc->wb.lower.hi_dword.csum_ip.csum, skb);
3706 skb->protocol = eth_type_trans(skb, netdev);
3708 if (likely(rx_desc->wb.upper.header_status &
3709 E1000_RXDPS_HDRSTAT_HDRSP))
3710 adapter->rx_hdr_split++;
3711 #ifdef CONFIG_E1000_NAPI
3712 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
3713 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
3714 le16_to_cpu(rx_desc->wb.middle.vlan) &
3715 E1000_RXD_SPC_VLAN_MASK);
3717 netif_receive_skb(skb);
3719 #else /* CONFIG_E1000_NAPI */
3720 if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
3721 vlan_hwaccel_rx(skb, adapter->vlgrp,
3722 le16_to_cpu(rx_desc->wb.middle.vlan) &
3723 E1000_RXD_SPC_VLAN_MASK);
3727 #endif /* CONFIG_E1000_NAPI */
3728 netdev->last_rx = jiffies;
3731 rx_desc->wb.middle.status_error &= ~0xFF;
3732 buffer_info->skb = NULL;
3734 /* return some buffers to hardware, one at a time is too slow */
3735 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
3736 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3741 buffer_info = next_buffer;
3743 staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
3745 rx_ring->next_to_clean = i;
3747 cleaned_count = E1000_DESC_UNUSED(rx_ring);
3749 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
3755 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3756 * @adapter: address of board private structure
3760 e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
3761 struct e1000_rx_ring *rx_ring,
3764 struct net_device *netdev = adapter->netdev;
3765 struct pci_dev *pdev = adapter->pdev;
3766 struct e1000_rx_desc *rx_desc;
3767 struct e1000_buffer *buffer_info;
3768 struct sk_buff *skb;
3770 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
3772 i = rx_ring->next_to_use;
3773 buffer_info = &rx_ring->buffer_info[i];
3775 while (cleaned_count--) {
3776 if (!(skb = buffer_info->skb))
3777 skb = dev_alloc_skb(bufsz);
3784 if (unlikely(!skb)) {
3785 /* Better luck next round */
3786 adapter->alloc_rx_buff_failed++;
3790 /* Fix for errata 23, can't cross 64kB boundary */
3791 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3792 struct sk_buff *oldskb = skb;
3793 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
3794 "at %p\n", bufsz, skb->data);
3795 /* Try again, without freeing the previous */
3796 skb = dev_alloc_skb(bufsz);
3797 /* Failed allocation, critical failure */
3799 dev_kfree_skb(oldskb);
3803 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
3806 dev_kfree_skb(oldskb);
3807 break; /* while !buffer_info->skb */
3809 /* Use new allocation */
3810 dev_kfree_skb(oldskb);
3813 /* Make buffer alignment 2 beyond a 16 byte boundary
3814 * this will result in a 16 byte aligned IP header after
3815 * the 14 byte MAC header is removed
3817 skb_reserve(skb, NET_IP_ALIGN);
3821 buffer_info->skb = skb;
3822 buffer_info->length = adapter->rx_buffer_len;
3824 buffer_info->dma = pci_map_single(pdev,
3826 adapter->rx_buffer_len,
3827 PCI_DMA_FROMDEVICE);
3829 /* Fix for errata 23, can't cross 64kB boundary */
3830 if (!e1000_check_64k_bound(adapter,
3831 (void *)(unsigned long)buffer_info->dma,
3832 adapter->rx_buffer_len)) {
3833 DPRINTK(RX_ERR, ERR,
3834 "dma align check failed: %u bytes at %p\n",
3835 adapter->rx_buffer_len,
3836 (void *)(unsigned long)buffer_info->dma);
3838 buffer_info->skb = NULL;
3840 pci_unmap_single(pdev, buffer_info->dma,
3841 adapter->rx_buffer_len,
3842 PCI_DMA_FROMDEVICE);
3844 break; /* while !buffer_info->skb */
3846 rx_desc = E1000_RX_DESC(*rx_ring, i);
3847 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3849 if (unlikely(++i == rx_ring->count))
3851 buffer_info = &rx_ring->buffer_info[i];
3854 if (likely(rx_ring->next_to_use != i)) {
3855 rx_ring->next_to_use = i;
3856 if (unlikely(i-- == 0))
3857 i = (rx_ring->count - 1);
3859 /* Force memory writes to complete before letting h/w
3860 * know there are new descriptors to fetch. (Only
3861 * applicable for weak-ordered memory model archs,
3862 * such as IA-64). */
3864 writel(i, adapter->hw.hw_addr + rx_ring->rdt);
3869 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3870 * @adapter: address of board private structure
3874 e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
3875 struct e1000_rx_ring *rx_ring,
3878 struct net_device *netdev = adapter->netdev;
3879 struct pci_dev *pdev = adapter->pdev;
3880 union e1000_rx_desc_packet_split *rx_desc;
3881 struct e1000_buffer *buffer_info;
3882 struct e1000_ps_page *ps_page;
3883 struct e1000_ps_page_dma *ps_page_dma;
3884 struct sk_buff *skb;
3887 i = rx_ring->next_to_use;
3888 buffer_info = &rx_ring->buffer_info[i];
3889 ps_page = &rx_ring->ps_page[i];
3890 ps_page_dma = &rx_ring->ps_page_dma[i];
3892 while (cleaned_count--) {
3893 rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
3895 for (j = 0; j < PS_PAGE_BUFFERS; j++) {
3896 if (j < adapter->rx_ps_pages) {
3897 if (likely(!ps_page->ps_page[j])) {
3898 ps_page->ps_page[j] =
3899 alloc_page(GFP_ATOMIC);
3900 if (unlikely(!ps_page->ps_page[j])) {
3901 adapter->alloc_rx_buff_failed++;
3904 ps_page_dma->ps_page_dma[j] =
3906 ps_page->ps_page[j],
3908 PCI_DMA_FROMDEVICE);
3910 /* Refresh the desc even if buffer_addrs didn't
3911 * change because each write-back erases
3914 rx_desc->read.buffer_addr[j+1] =
3915 cpu_to_le64(ps_page_dma->ps_page_dma[j]);
3917 rx_desc->read.buffer_addr[j+1] = ~0;
3920 skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN);
3922 if (unlikely(!skb)) {
3923 adapter->alloc_rx_buff_failed++;
3927 /* Make buffer alignment 2 beyond a 16 byte boundary
3928 * this will result in a 16 byte aligned IP header after
3929 * the 14 byte MAC header is removed
3931 skb_reserve(skb, NET_IP_ALIGN);
3935 buffer_info->skb = skb;
3936 buffer_info->length = adapter->rx_ps_bsize0;
3937 buffer_info->dma = pci_map_single(pdev, skb->data,
3938 adapter->rx_ps_bsize0,
3939 PCI_DMA_FROMDEVICE);
3941 rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
3943 if (unlikely(++i == rx_ring->count)) i = 0;
3944 buffer_info = &rx_ring->buffer_info[i];
3945 ps_page = &rx_ring->ps_page[i];
3946 ps_page_dma = &rx_ring->ps_page_dma[i];
3950 if (likely(rx_ring->next_to_use != i)) {
3951 rx_ring->next_to_use = i;
3952 if (unlikely(i-- == 0)) i = (rx_ring->count - 1);
3954 /* Force memory writes to complete before letting h/w
3955 * know there are new descriptors to fetch. (Only
3956 * applicable for weak-ordered memory model archs,
3957 * such as IA-64). */
3959 /* Hardware increments by 16 bytes, but packet split
3960 * descriptors are 32 bytes...so we increment tail
3963 writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt);
3968 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3973 e1000_smartspeed(struct e1000_adapter *adapter)
3975 uint16_t phy_status;
3978 if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
3979 !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
3982 if (adapter->smartspeed == 0) {
3983 /* If Master/Slave config fault is asserted twice,
3984 * we assume back-to-back */
3985 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
3986 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
3987 e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
3988 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
3989 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
3990 if (phy_ctrl & CR_1000T_MS_ENABLE) {
3991 phy_ctrl &= ~CR_1000T_MS_ENABLE;
3992 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
3994 adapter->smartspeed++;
3995 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
3996 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
3998 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
3999 MII_CR_RESTART_AUTO_NEG);
4000 e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
4005 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
4006 /* If still no link, perhaps using 2/3 pair cable */
4007 e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
4008 phy_ctrl |= CR_1000T_MS_ENABLE;
4009 e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
4010 if (!e1000_phy_setup_autoneg(&adapter->hw) &&
4011 !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
4012 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4013 MII_CR_RESTART_AUTO_NEG);
4014 e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
4017 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4018 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
4019 adapter->smartspeed = 0;
4030 e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4036 return e1000_mii_ioctl(netdev, ifr, cmd);
4050 e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
4052 struct e1000_adapter *adapter = netdev_priv(netdev);
4053 struct mii_ioctl_data *data = if_mii(ifr);
4057 unsigned long flags;
4059 if (adapter->hw.media_type != e1000_media_type_copper)
4064 data->phy_id = adapter->hw.phy_addr;
4067 if (!capable(CAP_NET_ADMIN))
4069 spin_lock_irqsave(&adapter->stats_lock, flags);
4070 if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
4072 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4075 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4078 if (!capable(CAP_NET_ADMIN))
4080 if (data->reg_num & ~(0x1F))
4082 mii_reg = data->val_in;
4083 spin_lock_irqsave(&adapter->stats_lock, flags);
4084 if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
4086 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4089 if (adapter->hw.phy_type == e1000_phy_m88) {
4090 switch (data->reg_num) {
4092 if (mii_reg & MII_CR_POWER_DOWN)
4094 if (mii_reg & MII_CR_AUTO_NEG_EN) {
4095 adapter->hw.autoneg = 1;
4096 adapter->hw.autoneg_advertised = 0x2F;
4099 spddplx = SPEED_1000;
4100 else if (mii_reg & 0x2000)
4101 spddplx = SPEED_100;
4104 spddplx += (mii_reg & 0x100)
4107 retval = e1000_set_spd_dplx(adapter,
4110 spin_unlock_irqrestore(
4111 &adapter->stats_lock,
4116 if (netif_running(adapter->netdev)) {
4117 e1000_down(adapter);
4120 e1000_reset(adapter);
4122 case M88E1000_PHY_SPEC_CTRL:
4123 case M88E1000_EXT_PHY_SPEC_CTRL:
4124 if (e1000_phy_reset(&adapter->hw)) {
4125 spin_unlock_irqrestore(
4126 &adapter->stats_lock, flags);
4132 switch (data->reg_num) {
4134 if (mii_reg & MII_CR_POWER_DOWN)
4136 if (netif_running(adapter->netdev)) {
4137 e1000_down(adapter);
4140 e1000_reset(adapter);
4144 spin_unlock_irqrestore(&adapter->stats_lock, flags);
4149 return E1000_SUCCESS;
4153 e1000_pci_set_mwi(struct e1000_hw *hw)
4155 struct e1000_adapter *adapter = hw->back;
4156 int ret_val = pci_set_mwi(adapter->pdev);
4159 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
4163 e1000_pci_clear_mwi(struct e1000_hw *hw)
4165 struct e1000_adapter *adapter = hw->back;
4167 pci_clear_mwi(adapter->pdev);
4171 e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4173 struct e1000_adapter *adapter = hw->back;
4175 pci_read_config_word(adapter->pdev, reg, value);
4179 e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
4181 struct e1000_adapter *adapter = hw->back;
4183 pci_write_config_word(adapter->pdev, reg, *value);
4187 e1000_io_read(struct e1000_hw *hw, unsigned long port)
4193 e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
4199 e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
4201 struct e1000_adapter *adapter = netdev_priv(netdev);
4202 uint32_t ctrl, rctl;
4204 e1000_irq_disable(adapter);
4205 adapter->vlgrp = grp;
4208 /* enable VLAN tag insert/strip */
4209 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4210 ctrl |= E1000_CTRL_VME;
4211 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4213 /* enable VLAN receive filtering */
4214 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4215 rctl |= E1000_RCTL_VFE;
4216 rctl &= ~E1000_RCTL_CFIEN;
4217 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4218 e1000_update_mng_vlan(adapter);
4220 /* disable VLAN tag insert/strip */
4221 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4222 ctrl &= ~E1000_CTRL_VME;
4223 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4225 /* disable VLAN filtering */
4226 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4227 rctl &= ~E1000_RCTL_VFE;
4228 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4229 if (adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) {
4230 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
4231 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4235 e1000_irq_enable(adapter);
4239 e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
4241 struct e1000_adapter *adapter = netdev_priv(netdev);
4242 uint32_t vfta, index;
4244 if ((adapter->hw.mng_cookie.status &
4245 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4246 (vid == adapter->mng_vlan_id))
4248 /* add VID to filter table */
4249 index = (vid >> 5) & 0x7F;
4250 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4251 vfta |= (1 << (vid & 0x1F));
4252 e1000_write_vfta(&adapter->hw, index, vfta);
4256 e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
4258 struct e1000_adapter *adapter = netdev_priv(netdev);
4259 uint32_t vfta, index;
4261 e1000_irq_disable(adapter);
4264 adapter->vlgrp->vlan_devices[vid] = NULL;
4266 e1000_irq_enable(adapter);
4268 if ((adapter->hw.mng_cookie.status &
4269 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4270 (vid == adapter->mng_vlan_id)) {
4271 /* release control to f/w */
4272 e1000_release_hw_control(adapter);
4276 /* remove VID from filter table */
4277 index = (vid >> 5) & 0x7F;
4278 vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
4279 vfta &= ~(1 << (vid & 0x1F));
4280 e1000_write_vfta(&adapter->hw, index, vfta);
4284 e1000_restore_vlan(struct e1000_adapter *adapter)
4286 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4288 if (adapter->vlgrp) {
4290 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
4291 if (!adapter->vlgrp->vlan_devices[vid])
4293 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4299 e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
4301 adapter->hw.autoneg = 0;
4303 /* Fiber NICs only allow 1000 gbps Full duplex */
4304 if ((adapter->hw.media_type == e1000_media_type_fiber) &&
4305 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4306 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4311 case SPEED_10 + DUPLEX_HALF:
4312 adapter->hw.forced_speed_duplex = e1000_10_half;
4314 case SPEED_10 + DUPLEX_FULL:
4315 adapter->hw.forced_speed_duplex = e1000_10_full;
4317 case SPEED_100 + DUPLEX_HALF:
4318 adapter->hw.forced_speed_duplex = e1000_100_half;
4320 case SPEED_100 + DUPLEX_FULL:
4321 adapter->hw.forced_speed_duplex = e1000_100_full;
4323 case SPEED_1000 + DUPLEX_FULL:
4324 adapter->hw.autoneg = 1;
4325 adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
4327 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4329 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4336 /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config
4337 * space versus the 64 bytes that pci_[save|restore]_state handle
4339 #define PCIE_CONFIG_SPACE_LEN 256
4340 #define PCI_CONFIG_SPACE_LEN 64
4342 e1000_pci_save_state(struct e1000_adapter *adapter)
4344 struct pci_dev *dev = adapter->pdev;
4347 if (adapter->hw.mac_type >= e1000_82571)
4348 size = PCIE_CONFIG_SPACE_LEN;
4350 size = PCI_CONFIG_SPACE_LEN;
4352 WARN_ON(adapter->config_space != NULL);
4354 adapter->config_space = kmalloc(size, GFP_KERNEL);
4355 if (!adapter->config_space) {
4356 DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size);
4359 for (i = 0; i < (size / 4); i++)
4360 pci_read_config_dword(dev, i * 4, &adapter->config_space[i]);
4365 e1000_pci_restore_state(struct e1000_adapter *adapter)
4367 struct pci_dev *dev = adapter->pdev;
4370 if (adapter->config_space == NULL)
4372 if (adapter->hw.mac_type >= e1000_82571)
4373 size = PCIE_CONFIG_SPACE_LEN;
4375 size = PCI_CONFIG_SPACE_LEN;
4376 for (i = 0; i < (size / 4); i++)
4377 pci_write_config_dword(dev, i * 4, adapter->config_space[i]);
4378 kfree(adapter->config_space);
4379 adapter->config_space = NULL;
4382 #endif /* CONFIG_PM */
4385 e1000_suspend(struct pci_dev *pdev, pm_message_t state)
4387 struct net_device *netdev = pci_get_drvdata(pdev);
4388 struct e1000_adapter *adapter = netdev_priv(netdev);
4389 uint32_t ctrl, ctrl_ext, rctl, manc, status;
4390 uint32_t wufc = adapter->wol;
4393 netif_device_detach(netdev);
4395 if (netif_running(netdev))
4396 e1000_down(adapter);
4399 /* implement our own version of pci_save_state(pdev) because pci
4400 * express adapters have larger 256 byte config spaces */
4401 retval = e1000_pci_save_state(adapter);
4406 status = E1000_READ_REG(&adapter->hw, STATUS);
4407 if (status & E1000_STATUS_LU)
4408 wufc &= ~E1000_WUFC_LNKC;
4411 e1000_setup_rctl(adapter);
4412 e1000_set_multi(netdev);
4414 /* turn on all-multi mode if wake on multicast is enabled */
4415 if (adapter->wol & E1000_WUFC_MC) {
4416 rctl = E1000_READ_REG(&adapter->hw, RCTL);
4417 rctl |= E1000_RCTL_MPE;
4418 E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
4421 if (adapter->hw.mac_type >= e1000_82540) {
4422 ctrl = E1000_READ_REG(&adapter->hw, CTRL);
4423 /* advertise wake from D3Cold */
4424 #define E1000_CTRL_ADVD3WUC 0x00100000
4425 /* phy power management enable */
4426 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4427 ctrl |= E1000_CTRL_ADVD3WUC |
4428 E1000_CTRL_EN_PHY_PWR_MGMT;
4429 E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
4432 if (adapter->hw.media_type == e1000_media_type_fiber ||
4433 adapter->hw.media_type == e1000_media_type_internal_serdes) {
4434 /* keep the laser running in D3 */
4435 ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
4436 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
4437 E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
4440 /* Allow time for pending master requests to run */
4441 e1000_disable_pciex_master(&adapter->hw);
4443 E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
4444 E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
4445 retval = pci_enable_wake(pdev, PCI_D3hot, 1);
4447 DPRINTK(PROBE, ERR, "Error enabling D3 wake\n");
4448 retval = pci_enable_wake(pdev, PCI_D3cold, 1);
4450 DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n");
4452 E1000_WRITE_REG(&adapter->hw, WUC, 0);
4453 E1000_WRITE_REG(&adapter->hw, WUFC, 0);
4454 retval = pci_enable_wake(pdev, PCI_D3hot, 0);
4456 DPRINTK(PROBE, ERR, "Error enabling D3 wake\n");
4457 retval = pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */
4459 DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n");
4462 if (adapter->hw.mac_type >= e1000_82540 &&
4463 adapter->hw.media_type == e1000_media_type_copper) {
4464 manc = E1000_READ_REG(&adapter->hw, MANC);
4465 if (manc & E1000_MANC_SMBUS_EN) {
4466 manc |= E1000_MANC_ARP_EN;
4467 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4468 retval = pci_enable_wake(pdev, PCI_D3hot, 1);
4470 DPRINTK(PROBE, ERR, "Error enabling D3 wake\n");
4471 retval = pci_enable_wake(pdev, PCI_D3cold, 1);
4473 DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n");
4477 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4478 * would have already happened in close and is redundant. */
4479 e1000_release_hw_control(adapter);
4481 pci_disable_device(pdev);
4483 retval = pci_set_power_state(pdev, pci_choose_state(pdev, state));
4485 DPRINTK(PROBE, ERR, "Error in setting power state\n");
4492 e1000_resume(struct pci_dev *pdev)
4494 struct net_device *netdev = pci_get_drvdata(pdev);
4495 struct e1000_adapter *adapter = netdev_priv(netdev);
4497 uint32_t manc, ret_val;
4499 retval = pci_set_power_state(pdev, PCI_D0);
4501 DPRINTK(PROBE, ERR, "Error in setting power state\n");
4502 e1000_pci_restore_state(adapter);
4503 ret_val = pci_enable_device(pdev);
4504 pci_set_master(pdev);
4506 retval = pci_enable_wake(pdev, PCI_D3hot, 0);
4508 DPRINTK(PROBE, ERR, "Error enabling D3 wake\n");
4509 retval = pci_enable_wake(pdev, PCI_D3cold, 0);
4511 DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n");
4513 e1000_reset(adapter);
4514 E1000_WRITE_REG(&adapter->hw, WUS, ~0);
4516 if (netif_running(netdev))
4519 netif_device_attach(netdev);
4521 if (adapter->hw.mac_type >= e1000_82540 &&
4522 adapter->hw.media_type == e1000_media_type_copper) {
4523 manc = E1000_READ_REG(&adapter->hw, MANC);
4524 manc &= ~(E1000_MANC_ARP_EN);
4525 E1000_WRITE_REG(&adapter->hw, MANC, manc);
4528 /* If the controller is 82573 and f/w is AMT, do not set
4529 * DRV_LOAD until the interface is up. For all other cases,
4530 * let the f/w know that the h/w is now under the control
4532 if (adapter->hw.mac_type != e1000_82573 ||
4533 !e1000_check_mng_mode(&adapter->hw))
4534 e1000_get_hw_control(adapter);
4539 #ifdef CONFIG_NET_POLL_CONTROLLER
4541 * Polling 'interrupt' - used by things like netconsole to send skbs
4542 * without having to re-enable interrupts. It's not called while
4543 * the interrupt routine is executing.
4546 e1000_netpoll(struct net_device *netdev)
4548 struct e1000_adapter *adapter = netdev_priv(netdev);
4549 disable_irq(adapter->pdev->irq);
4550 e1000_intr(adapter->pdev->irq, netdev, NULL);
4551 e1000_clean_tx_irq(adapter, adapter->tx_ring);
4552 #ifndef CONFIG_E1000_NAPI
4553 adapter->clean_rx(adapter, adapter->rx_ring);
4555 enable_irq(adapter->pdev->irq);