1 /*******************************************************************************
4 Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
26 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *******************************************************************************/
32 char e1000_driver_name
[] = "e1000";
33 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
34 #ifndef CONFIG_E1000_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "7.1.9-k6"DRIVERNAPI
40 char e1000_driver_version
[] = DRV_VERSION
;
41 static char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* e1000_pci_tbl - PCI Device ID Table
45 * Last entry must be all 0s
48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
50 static struct pci_device_id e1000_pci_tbl
[] = {
51 INTEL_E1000_ETHERNET_DEVICE(0x1001),
52 INTEL_E1000_ETHERNET_DEVICE(0x1004),
53 INTEL_E1000_ETHERNET_DEVICE(0x1008),
54 INTEL_E1000_ETHERNET_DEVICE(0x1009),
55 INTEL_E1000_ETHERNET_DEVICE(0x100C),
56 INTEL_E1000_ETHERNET_DEVICE(0x100D),
57 INTEL_E1000_ETHERNET_DEVICE(0x100E),
58 INTEL_E1000_ETHERNET_DEVICE(0x100F),
59 INTEL_E1000_ETHERNET_DEVICE(0x1010),
60 INTEL_E1000_ETHERNET_DEVICE(0x1011),
61 INTEL_E1000_ETHERNET_DEVICE(0x1012),
62 INTEL_E1000_ETHERNET_DEVICE(0x1013),
63 INTEL_E1000_ETHERNET_DEVICE(0x1014),
64 INTEL_E1000_ETHERNET_DEVICE(0x1015),
65 INTEL_E1000_ETHERNET_DEVICE(0x1016),
66 INTEL_E1000_ETHERNET_DEVICE(0x1017),
67 INTEL_E1000_ETHERNET_DEVICE(0x1018),
68 INTEL_E1000_ETHERNET_DEVICE(0x1019),
69 INTEL_E1000_ETHERNET_DEVICE(0x101A),
70 INTEL_E1000_ETHERNET_DEVICE(0x101D),
71 INTEL_E1000_ETHERNET_DEVICE(0x101E),
72 INTEL_E1000_ETHERNET_DEVICE(0x1026),
73 INTEL_E1000_ETHERNET_DEVICE(0x1027),
74 INTEL_E1000_ETHERNET_DEVICE(0x1028),
75 INTEL_E1000_ETHERNET_DEVICE(0x1049),
76 INTEL_E1000_ETHERNET_DEVICE(0x104A),
77 INTEL_E1000_ETHERNET_DEVICE(0x104B),
78 INTEL_E1000_ETHERNET_DEVICE(0x104C),
79 INTEL_E1000_ETHERNET_DEVICE(0x104D),
80 INTEL_E1000_ETHERNET_DEVICE(0x105E),
81 INTEL_E1000_ETHERNET_DEVICE(0x105F),
82 INTEL_E1000_ETHERNET_DEVICE(0x1060),
83 INTEL_E1000_ETHERNET_DEVICE(0x1075),
84 INTEL_E1000_ETHERNET_DEVICE(0x1076),
85 INTEL_E1000_ETHERNET_DEVICE(0x1077),
86 INTEL_E1000_ETHERNET_DEVICE(0x1078),
87 INTEL_E1000_ETHERNET_DEVICE(0x1079),
88 INTEL_E1000_ETHERNET_DEVICE(0x107A),
89 INTEL_E1000_ETHERNET_DEVICE(0x107B),
90 INTEL_E1000_ETHERNET_DEVICE(0x107C),
91 INTEL_E1000_ETHERNET_DEVICE(0x107D),
92 INTEL_E1000_ETHERNET_DEVICE(0x107E),
93 INTEL_E1000_ETHERNET_DEVICE(0x107F),
94 INTEL_E1000_ETHERNET_DEVICE(0x108A),
95 INTEL_E1000_ETHERNET_DEVICE(0x108B),
96 INTEL_E1000_ETHERNET_DEVICE(0x108C),
97 INTEL_E1000_ETHERNET_DEVICE(0x1096),
98 INTEL_E1000_ETHERNET_DEVICE(0x1098),
99 INTEL_E1000_ETHERNET_DEVICE(0x1099),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
102 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
103 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
104 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
105 /* required last entry */
109 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
111 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
112 struct e1000_tx_ring
*txdr
);
113 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
114 struct e1000_rx_ring
*rxdr
);
115 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
116 struct e1000_tx_ring
*tx_ring
);
117 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
118 struct e1000_rx_ring
*rx_ring
);
120 /* Local Function Prototypes */
122 static int e1000_init_module(void);
123 static void e1000_exit_module(void);
124 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
125 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
126 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
127 static int e1000_sw_init(struct e1000_adapter
*adapter
);
128 static int e1000_open(struct net_device
*netdev
);
129 static int e1000_close(struct net_device
*netdev
);
130 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
131 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
132 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
133 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
134 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
135 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
136 struct e1000_tx_ring
*tx_ring
);
137 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
138 struct e1000_rx_ring
*rx_ring
);
139 static void e1000_set_multi(struct net_device
*netdev
);
140 static void e1000_update_phy_info(unsigned long data
);
141 static void e1000_watchdog(unsigned long data
);
142 static void e1000_82547_tx_fifo_stall(unsigned long data
);
143 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
144 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
145 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
146 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
147 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
148 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
149 struct e1000_tx_ring
*tx_ring
);
150 #ifdef CONFIG_E1000_NAPI
151 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
152 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
153 struct e1000_rx_ring
*rx_ring
,
154 int *work_done
, int work_to_do
);
155 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
156 struct e1000_rx_ring
*rx_ring
,
157 int *work_done
, int work_to_do
);
159 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
160 struct e1000_rx_ring
*rx_ring
);
161 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
162 struct e1000_rx_ring
*rx_ring
);
164 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
165 struct e1000_rx_ring
*rx_ring
,
167 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
168 struct e1000_rx_ring
*rx_ring
,
170 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
171 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
173 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
174 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
175 static void e1000_tx_timeout(struct net_device
*dev
);
176 static void e1000_reset_task(struct net_device
*dev
);
177 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
178 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
179 struct sk_buff
*skb
);
181 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
182 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
183 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
184 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
186 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
188 static int e1000_resume(struct pci_dev
*pdev
);
190 static void e1000_shutdown(struct pci_dev
*pdev
);
192 #ifdef CONFIG_NET_POLL_CONTROLLER
193 /* for netdump / net console */
194 static void e1000_netpoll (struct net_device
*netdev
);
197 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
198 pci_channel_state_t state
);
199 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
200 static void e1000_io_resume(struct pci_dev
*pdev
);
202 static struct pci_error_handlers e1000_err_handler
= {
203 .error_detected
= e1000_io_error_detected
,
204 .slot_reset
= e1000_io_slot_reset
,
205 .resume
= e1000_io_resume
,
208 static struct pci_driver e1000_driver
= {
209 .name
= e1000_driver_name
,
210 .id_table
= e1000_pci_tbl
,
211 .probe
= e1000_probe
,
212 .remove
= __devexit_p(e1000_remove
),
213 /* Power Managment Hooks */
214 .suspend
= e1000_suspend
,
216 .resume
= e1000_resume
,
218 .shutdown
= e1000_shutdown
,
219 .err_handler
= &e1000_err_handler
222 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
223 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
224 MODULE_LICENSE("GPL");
225 MODULE_VERSION(DRV_VERSION
);
227 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
228 module_param(debug
, int, 0);
229 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
232 * e1000_init_module - Driver Registration Routine
234 * e1000_init_module is the first routine called when the driver is
235 * loaded. All it does is register with the PCI subsystem.
239 e1000_init_module(void)
242 printk(KERN_INFO
"%s - version %s\n",
243 e1000_driver_string
, e1000_driver_version
);
245 printk(KERN_INFO
"%s\n", e1000_copyright
);
247 ret
= pci_register_driver(&e1000_driver
);
252 module_init(e1000_init_module
);
255 * e1000_exit_module - Driver Exit Cleanup Routine
257 * e1000_exit_module is called just before the driver is removed
262 e1000_exit_module(void)
264 pci_unregister_driver(&e1000_driver
);
267 module_exit(e1000_exit_module
);
269 static int e1000_request_irq(struct e1000_adapter
*adapter
)
271 struct net_device
*netdev
= adapter
->netdev
;
275 #ifdef CONFIG_PCI_MSI
276 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
277 adapter
->have_msi
= TRUE
;
278 if ((err
= pci_enable_msi(adapter
->pdev
))) {
280 "Unable to allocate MSI interrupt Error: %d\n", err
);
281 adapter
->have_msi
= FALSE
;
284 if (adapter
->have_msi
)
285 flags
&= ~IRQF_SHARED
;
287 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
288 netdev
->name
, netdev
)))
290 "Unable to allocate interrupt Error: %d\n", err
);
295 static void e1000_free_irq(struct e1000_adapter
*adapter
)
297 struct net_device
*netdev
= adapter
->netdev
;
299 free_irq(adapter
->pdev
->irq
, netdev
);
301 #ifdef CONFIG_PCI_MSI
302 if (adapter
->have_msi
)
303 pci_disable_msi(adapter
->pdev
);
308 * e1000_irq_disable - Mask off interrupt generation on the NIC
309 * @adapter: board private structure
313 e1000_irq_disable(struct e1000_adapter
*adapter
)
315 atomic_inc(&adapter
->irq_sem
);
316 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
317 E1000_WRITE_FLUSH(&adapter
->hw
);
318 synchronize_irq(adapter
->pdev
->irq
);
322 * e1000_irq_enable - Enable default interrupt generation settings
323 * @adapter: board private structure
327 e1000_irq_enable(struct e1000_adapter
*adapter
)
329 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
330 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
331 E1000_WRITE_FLUSH(&adapter
->hw
);
336 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
338 struct net_device
*netdev
= adapter
->netdev
;
339 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
340 uint16_t old_vid
= adapter
->mng_vlan_id
;
341 if (adapter
->vlgrp
) {
342 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
343 if (adapter
->hw
.mng_cookie
.status
&
344 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
345 e1000_vlan_rx_add_vid(netdev
, vid
);
346 adapter
->mng_vlan_id
= vid
;
348 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
350 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
352 !adapter
->vlgrp
->vlan_devices
[old_vid
])
353 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
355 adapter
->mng_vlan_id
= vid
;
360 * e1000_release_hw_control - release control of the h/w to f/w
361 * @adapter: address of board private structure
363 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
364 * For ASF and Pass Through versions of f/w this means that the
365 * driver is no longer loaded. For AMT version (only with 82573) i
366 * of the f/w this means that the netowrk i/f is closed.
371 e1000_release_hw_control(struct e1000_adapter
*adapter
)
377 /* Let firmware taken over control of h/w */
378 switch (adapter
->hw
.mac_type
) {
381 case e1000_80003es2lan
:
382 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
383 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
384 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
387 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
388 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
389 swsm
& ~E1000_SWSM_DRV_LOAD
);
391 extcnf
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
392 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
393 extcnf
& ~E1000_CTRL_EXT_DRV_LOAD
);
401 * e1000_get_hw_control - get control of the h/w from f/w
402 * @adapter: address of board private structure
404 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
405 * For ASF and Pass Through versions of f/w this means that
406 * the driver is loaded. For AMT version (only with 82573)
407 * of the f/w this means that the netowrk i/f is open.
412 e1000_get_hw_control(struct e1000_adapter
*adapter
)
417 /* Let firmware know the driver has taken over */
418 switch (adapter
->hw
.mac_type
) {
421 case e1000_80003es2lan
:
422 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
423 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
424 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
427 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
428 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
429 swsm
| E1000_SWSM_DRV_LOAD
);
432 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
433 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
434 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
442 e1000_up(struct e1000_adapter
*adapter
)
444 struct net_device
*netdev
= adapter
->netdev
;
447 /* hardware has been reset, we need to reload some things */
449 e1000_set_multi(netdev
);
451 e1000_restore_vlan(adapter
);
453 e1000_configure_tx(adapter
);
454 e1000_setup_rctl(adapter
);
455 e1000_configure_rx(adapter
);
456 /* call E1000_DESC_UNUSED which always leaves
457 * at least 1 descriptor unused to make sure
458 * next_to_use != next_to_clean */
459 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
460 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
461 adapter
->alloc_rx_buf(adapter
, ring
,
462 E1000_DESC_UNUSED(ring
));
465 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
467 mod_timer(&adapter
->watchdog_timer
, jiffies
);
469 #ifdef CONFIG_E1000_NAPI
470 netif_poll_enable(netdev
);
472 e1000_irq_enable(adapter
);
478 * e1000_power_up_phy - restore link in case the phy was powered down
479 * @adapter: address of board private structure
481 * The phy may be powered down to save power and turn off link when the
482 * driver is unloaded and wake on lan is not enabled (among others)
483 * *** this routine MUST be followed by a call to e1000_reset ***
487 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
489 uint16_t mii_reg
= 0;
491 /* Just clear the power down bit to wake the phy back up */
492 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
493 /* according to the manual, the phy will retain its
494 * settings across a power-down/up cycle */
495 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
496 mii_reg
&= ~MII_CR_POWER_DOWN
;
497 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
501 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
503 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
504 e1000_check_mng_mode(&adapter
->hw
);
505 /* Power down the PHY so no link is implied when interface is down
506 * The PHY cannot be powered down if any of the following is TRUE
509 * (c) SoL/IDER session is active */
510 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
511 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
512 adapter
->hw
.media_type
== e1000_media_type_copper
&&
513 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
515 !e1000_check_phy_reset_block(&adapter
->hw
)) {
516 uint16_t mii_reg
= 0;
517 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
518 mii_reg
|= MII_CR_POWER_DOWN
;
519 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
525 e1000_down(struct e1000_adapter
*adapter
)
527 struct net_device
*netdev
= adapter
->netdev
;
529 e1000_irq_disable(adapter
);
531 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
532 del_timer_sync(&adapter
->watchdog_timer
);
533 del_timer_sync(&adapter
->phy_info_timer
);
535 #ifdef CONFIG_E1000_NAPI
536 netif_poll_disable(netdev
);
538 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
539 adapter
->link_speed
= 0;
540 adapter
->link_duplex
= 0;
541 netif_carrier_off(netdev
);
542 netif_stop_queue(netdev
);
544 e1000_reset(adapter
);
545 e1000_clean_all_tx_rings(adapter
);
546 e1000_clean_all_rx_rings(adapter
);
550 e1000_reinit_locked(struct e1000_adapter
*adapter
)
552 WARN_ON(in_interrupt());
553 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
557 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
561 e1000_reset(struct e1000_adapter
*adapter
)
564 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
566 /* Repartition Pba for greater than 9k mtu
567 * To take effect CTRL.RST is required.
570 switch (adapter
->hw
.mac_type
) {
572 case e1000_82547_rev_2
:
577 case e1000_80003es2lan
:
591 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
592 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
593 pba
-= 8; /* allocate more FIFO for Tx */
596 if (adapter
->hw
.mac_type
== e1000_82547
) {
597 adapter
->tx_fifo_head
= 0;
598 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
599 adapter
->tx_fifo_size
=
600 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
601 atomic_set(&adapter
->tx_fifo_stall
, 0);
604 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
606 /* flow control settings */
607 /* Set the FC high water mark to 90% of the FIFO size.
608 * Required to clear last 3 LSB */
609 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
610 /* We can't use 90% on small FIFOs because the remainder
611 * would be less than 1 full frame. In this case, we size
612 * it to allow at least a full frame above the high water
614 if (pba
< E1000_PBA_16K
)
615 fc_high_water_mark
= (pba
* 1024) - 1600;
617 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
618 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
619 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
620 adapter
->hw
.fc_pause_time
= 0xFFFF;
622 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
623 adapter
->hw
.fc_send_xon
= 1;
624 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
626 /* Allow time for pending master requests to run */
627 e1000_reset_hw(&adapter
->hw
);
628 if (adapter
->hw
.mac_type
>= e1000_82544
)
629 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
630 if (e1000_init_hw(&adapter
->hw
))
631 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
632 e1000_update_mng_vlan(adapter
);
633 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
634 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
636 e1000_reset_adaptive(&adapter
->hw
);
637 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
639 if (!adapter
->smart_power_down
&&
640 (adapter
->hw
.mac_type
== e1000_82571
||
641 adapter
->hw
.mac_type
== e1000_82572
)) {
642 uint16_t phy_data
= 0;
643 /* speed up time to link by disabling smart power down, ignore
644 * the return value of this function because there is nothing
645 * different we would do if it failed */
646 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
648 phy_data
&= ~IGP02E1000_PM_SPD
;
649 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
653 if (adapter
->hw
.mac_type
< e1000_ich8lan
)
654 /* FIXME: this code is duplicate and wrong for PCI Express */
655 if (adapter
->en_mng_pt
) {
656 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
657 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
658 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
663 * e1000_probe - Device Initialization Routine
664 * @pdev: PCI device information struct
665 * @ent: entry in e1000_pci_tbl
667 * Returns 0 on success, negative on failure
669 * e1000_probe initializes an adapter identified by a pci_dev structure.
670 * The OS initialization, configuring of the adapter private structure,
671 * and a hardware reset occur.
675 e1000_probe(struct pci_dev
*pdev
,
676 const struct pci_device_id
*ent
)
678 struct net_device
*netdev
;
679 struct e1000_adapter
*adapter
;
680 unsigned long mmio_start
, mmio_len
;
681 unsigned long flash_start
, flash_len
;
683 static int cards_found
= 0;
684 static int e1000_ksp3_port_a
= 0; /* global ksp3 port a indication */
685 int i
, err
, pci_using_dac
;
686 uint16_t eeprom_data
;
687 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
688 if ((err
= pci_enable_device(pdev
)))
691 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
692 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
695 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
696 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
697 E1000_ERR("No usable DMA configuration, aborting\n");
703 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
706 pci_set_master(pdev
);
708 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
711 goto err_alloc_etherdev
;
714 SET_MODULE_OWNER(netdev
);
715 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
717 pci_set_drvdata(pdev
, netdev
);
718 adapter
= netdev_priv(netdev
);
719 adapter
->netdev
= netdev
;
720 adapter
->pdev
= pdev
;
721 adapter
->hw
.back
= adapter
;
722 adapter
->msg_enable
= (1 << debug
) - 1;
724 mmio_start
= pci_resource_start(pdev
, BAR_0
);
725 mmio_len
= pci_resource_len(pdev
, BAR_0
);
727 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
728 if (!adapter
->hw
.hw_addr
) {
733 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
734 if (pci_resource_len(pdev
, i
) == 0)
736 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
737 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
742 netdev
->open
= &e1000_open
;
743 netdev
->stop
= &e1000_close
;
744 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
745 netdev
->get_stats
= &e1000_get_stats
;
746 netdev
->set_multicast_list
= &e1000_set_multi
;
747 netdev
->set_mac_address
= &e1000_set_mac
;
748 netdev
->change_mtu
= &e1000_change_mtu
;
749 netdev
->do_ioctl
= &e1000_ioctl
;
750 e1000_set_ethtool_ops(netdev
);
751 netdev
->tx_timeout
= &e1000_tx_timeout
;
752 netdev
->watchdog_timeo
= 5 * HZ
;
753 #ifdef CONFIG_E1000_NAPI
754 netdev
->poll
= &e1000_clean
;
757 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
758 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
759 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
760 #ifdef CONFIG_NET_POLL_CONTROLLER
761 netdev
->poll_controller
= e1000_netpoll
;
763 strcpy(netdev
->name
, pci_name(pdev
));
765 netdev
->mem_start
= mmio_start
;
766 netdev
->mem_end
= mmio_start
+ mmio_len
;
767 netdev
->base_addr
= adapter
->hw
.io_base
;
769 adapter
->bd_number
= cards_found
;
771 /* setup the private structure */
773 if ((err
= e1000_sw_init(adapter
)))
776 /* Flash BAR mapping must happen after e1000_sw_init
777 * because it depends on mac_type */
778 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
779 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
780 flash_start
= pci_resource_start(pdev
, 1);
781 flash_len
= pci_resource_len(pdev
, 1);
782 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
783 if (!adapter
->hw
.flash_address
) {
789 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
790 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
792 /* if ksp3, indicate if it's port a being setup */
793 if (pdev
->device
== E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
&&
794 e1000_ksp3_port_a
== 0)
795 adapter
->ksp3_port_a
= 1;
797 /* Reset for multiple KP3 adapters */
798 if (e1000_ksp3_port_a
== 4)
799 e1000_ksp3_port_a
= 0;
801 if (adapter
->hw
.mac_type
>= e1000_82543
) {
802 netdev
->features
= NETIF_F_SG
|
806 NETIF_F_HW_VLAN_FILTER
;
807 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
808 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
812 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
813 (adapter
->hw
.mac_type
!= e1000_82547
))
814 netdev
->features
|= NETIF_F_TSO
;
816 #ifdef NETIF_F_TSO_IPV6
817 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
818 netdev
->features
|= NETIF_F_TSO_IPV6
;
822 netdev
->features
|= NETIF_F_HIGHDMA
;
824 netdev
->features
|= NETIF_F_LLTX
;
826 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
828 /* initialize eeprom parameters */
830 if (e1000_init_eeprom_params(&adapter
->hw
)) {
831 E1000_ERR("EEPROM initialization failed\n");
835 /* before reading the EEPROM, reset the controller to
836 * put the device in a known good starting state */
838 e1000_reset_hw(&adapter
->hw
);
840 /* make sure the EEPROM is good */
842 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
843 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
848 /* copy the MAC address out of the EEPROM */
850 if (e1000_read_mac_addr(&adapter
->hw
))
851 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
852 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
853 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
855 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
856 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
861 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
863 e1000_get_bus_info(&adapter
->hw
);
865 init_timer(&adapter
->tx_fifo_stall_timer
);
866 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
867 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
869 init_timer(&adapter
->watchdog_timer
);
870 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
871 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
873 init_timer(&adapter
->phy_info_timer
);
874 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
875 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
877 INIT_WORK(&adapter
->reset_task
,
878 (void (*)(void *))e1000_reset_task
, netdev
);
880 /* we're going to reset, so assume we have no link for now */
882 netif_carrier_off(netdev
);
883 netif_stop_queue(netdev
);
885 e1000_check_options(adapter
);
887 /* Initial Wake on LAN setting
888 * If APM wake is enabled in the EEPROM,
889 * enable the ACPI Magic Packet filter
892 switch (adapter
->hw
.mac_type
) {
893 case e1000_82542_rev2_0
:
894 case e1000_82542_rev2_1
:
898 e1000_read_eeprom(&adapter
->hw
,
899 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
900 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
903 e1000_read_eeprom(&adapter
->hw
,
904 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
905 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
908 case e1000_82546_rev_3
:
910 case e1000_80003es2lan
:
911 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
912 e1000_read_eeprom(&adapter
->hw
,
913 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
918 e1000_read_eeprom(&adapter
->hw
,
919 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
922 if (eeprom_data
& eeprom_apme_mask
)
923 adapter
->wol
|= E1000_WUFC_MAG
;
925 /* print bus type/speed/width info */
927 struct e1000_hw
*hw
= &adapter
->hw
;
928 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
929 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
930 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
931 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
932 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
933 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
934 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
935 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
936 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
937 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
938 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
942 for (i
= 0; i
< 6; i
++)
943 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
945 /* reset the hardware with the new settings */
946 e1000_reset(adapter
);
948 /* If the controller is 82573 and f/w is AMT, do not set
949 * DRV_LOAD until the interface is up. For all other cases,
950 * let the f/w know that the h/w is now under the control
952 if (adapter
->hw
.mac_type
!= e1000_82573
||
953 !e1000_check_mng_mode(&adapter
->hw
))
954 e1000_get_hw_control(adapter
);
956 strcpy(netdev
->name
, "eth%d");
957 if ((err
= register_netdev(netdev
)))
960 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
966 if (adapter
->hw
.flash_address
)
967 iounmap(adapter
->hw
.flash_address
);
971 iounmap(adapter
->hw
.hw_addr
);
975 pci_release_regions(pdev
);
980 * e1000_remove - Device Removal Routine
981 * @pdev: PCI device information struct
983 * e1000_remove is called by the PCI subsystem to alert the driver
984 * that it should release a PCI device. The could be caused by a
985 * Hot-Plug event, or because the driver is going to be removed from
989 static void __devexit
990 e1000_remove(struct pci_dev
*pdev
)
992 struct net_device
*netdev
= pci_get_drvdata(pdev
);
993 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
995 #ifdef CONFIG_E1000_NAPI
999 flush_scheduled_work();
1001 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1002 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
1003 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1004 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1005 if (manc
& E1000_MANC_SMBUS_EN
) {
1006 manc
|= E1000_MANC_ARP_EN
;
1007 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1011 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1012 * would have already happened in close and is redundant. */
1013 e1000_release_hw_control(adapter
);
1015 unregister_netdev(netdev
);
1016 #ifdef CONFIG_E1000_NAPI
1017 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1018 dev_put(&adapter
->polling_netdev
[i
]);
1021 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1022 e1000_phy_hw_reset(&adapter
->hw
);
1024 kfree(adapter
->tx_ring
);
1025 kfree(adapter
->rx_ring
);
1026 #ifdef CONFIG_E1000_NAPI
1027 kfree(adapter
->polling_netdev
);
1030 iounmap(adapter
->hw
.hw_addr
);
1031 if (adapter
->hw
.flash_address
)
1032 iounmap(adapter
->hw
.flash_address
);
1033 pci_release_regions(pdev
);
1035 free_netdev(netdev
);
1037 pci_disable_device(pdev
);
1041 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1042 * @adapter: board private structure to initialize
1044 * e1000_sw_init initializes the Adapter private data structure.
1045 * Fields are initialized based on PCI device information and
1046 * OS network device settings (MTU size).
1049 static int __devinit
1050 e1000_sw_init(struct e1000_adapter
*adapter
)
1052 struct e1000_hw
*hw
= &adapter
->hw
;
1053 struct net_device
*netdev
= adapter
->netdev
;
1054 struct pci_dev
*pdev
= adapter
->pdev
;
1055 #ifdef CONFIG_E1000_NAPI
1059 /* PCI config space info */
1061 hw
->vendor_id
= pdev
->vendor
;
1062 hw
->device_id
= pdev
->device
;
1063 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1064 hw
->subsystem_id
= pdev
->subsystem_device
;
1066 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1068 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1070 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1071 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1072 hw
->max_frame_size
= netdev
->mtu
+
1073 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1074 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1076 /* identify the MAC */
1078 if (e1000_set_mac_type(hw
)) {
1079 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1083 switch (hw
->mac_type
) {
1088 case e1000_82541_rev_2
:
1089 case e1000_82547_rev_2
:
1090 hw
->phy_init_script
= 1;
1094 e1000_set_media_type(hw
);
1096 hw
->wait_autoneg_complete
= FALSE
;
1097 hw
->tbi_compatibility_en
= TRUE
;
1098 hw
->adaptive_ifs
= TRUE
;
1100 /* Copper options */
1102 if (hw
->media_type
== e1000_media_type_copper
) {
1103 hw
->mdix
= AUTO_ALL_MODES
;
1104 hw
->disable_polarity_correction
= FALSE
;
1105 hw
->master_slave
= E1000_MASTER_SLAVE
;
1108 adapter
->num_tx_queues
= 1;
1109 adapter
->num_rx_queues
= 1;
1111 if (e1000_alloc_queues(adapter
)) {
1112 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1116 #ifdef CONFIG_E1000_NAPI
1117 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1118 adapter
->polling_netdev
[i
].priv
= adapter
;
1119 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1120 adapter
->polling_netdev
[i
].weight
= 64;
1121 dev_hold(&adapter
->polling_netdev
[i
]);
1122 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1124 spin_lock_init(&adapter
->tx_queue_lock
);
1127 atomic_set(&adapter
->irq_sem
, 1);
1128 spin_lock_init(&adapter
->stats_lock
);
1134 * e1000_alloc_queues - Allocate memory for all rings
1135 * @adapter: board private structure to initialize
1137 * We allocate one ring per queue at run-time since we don't know the
1138 * number of queues at compile-time. The polling_netdev array is
1139 * intended for Multiqueue, but should work fine with a single queue.
1142 static int __devinit
1143 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1147 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1148 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1149 if (!adapter
->tx_ring
)
1151 memset(adapter
->tx_ring
, 0, size
);
1153 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1154 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1155 if (!adapter
->rx_ring
) {
1156 kfree(adapter
->tx_ring
);
1159 memset(adapter
->rx_ring
, 0, size
);
1161 #ifdef CONFIG_E1000_NAPI
1162 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1163 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1164 if (!adapter
->polling_netdev
) {
1165 kfree(adapter
->tx_ring
);
1166 kfree(adapter
->rx_ring
);
1169 memset(adapter
->polling_netdev
, 0, size
);
1172 return E1000_SUCCESS
;
1176 * e1000_open - Called when a network interface is made active
1177 * @netdev: network interface device structure
1179 * Returns 0 on success, negative value on failure
1181 * The open entry point is called when a network interface is made
1182 * active by the system (IFF_UP). At this point all resources needed
1183 * for transmit and receive operations are allocated, the interrupt
1184 * handler is registered with the OS, the watchdog timer is started,
1185 * and the stack is notified that the interface is ready.
1189 e1000_open(struct net_device
*netdev
)
1191 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1194 /* disallow open during test */
1195 if (test_bit(__E1000_DRIVER_TESTING
, &adapter
->flags
))
1198 /* allocate transmit descriptors */
1200 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1203 /* allocate receive descriptors */
1205 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1208 err
= e1000_request_irq(adapter
);
1212 e1000_power_up_phy(adapter
);
1214 if ((err
= e1000_up(adapter
)))
1216 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1217 if ((adapter
->hw
.mng_cookie
.status
&
1218 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1219 e1000_update_mng_vlan(adapter
);
1222 /* If AMT is enabled, let the firmware know that the network
1223 * interface is now open */
1224 if (adapter
->hw
.mac_type
== e1000_82573
&&
1225 e1000_check_mng_mode(&adapter
->hw
))
1226 e1000_get_hw_control(adapter
);
1228 return E1000_SUCCESS
;
1231 e1000_free_all_rx_resources(adapter
);
1233 e1000_free_all_tx_resources(adapter
);
1235 e1000_reset(adapter
);
1241 * e1000_close - Disables a network interface
1242 * @netdev: network interface device structure
1244 * Returns 0, this is not allowed to fail
1246 * The close entry point is called when an interface is de-activated
1247 * by the OS. The hardware is still under the drivers control, but
1248 * needs to be disabled. A global MAC reset is issued to stop the
1249 * hardware, and all transmit and receive resources are freed.
1253 e1000_close(struct net_device
*netdev
)
1255 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1257 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1258 e1000_down(adapter
);
1259 e1000_power_down_phy(adapter
);
1260 e1000_free_irq(adapter
);
1262 e1000_free_all_tx_resources(adapter
);
1263 e1000_free_all_rx_resources(adapter
);
1265 if ((adapter
->hw
.mng_cookie
.status
&
1266 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1267 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1270 /* If AMT is enabled, let the firmware know that the network
1271 * interface is now closed */
1272 if (adapter
->hw
.mac_type
== e1000_82573
&&
1273 e1000_check_mng_mode(&adapter
->hw
))
1274 e1000_release_hw_control(adapter
);
1280 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1281 * @adapter: address of board private structure
1282 * @start: address of beginning of memory
1283 * @len: length of memory
1286 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1287 void *start
, unsigned long len
)
1289 unsigned long begin
= (unsigned long) start
;
1290 unsigned long end
= begin
+ len
;
1292 /* First rev 82545 and 82546 need to not allow any memory
1293 * write location to cross 64k boundary due to errata 23 */
1294 if (adapter
->hw
.mac_type
== e1000_82545
||
1295 adapter
->hw
.mac_type
== e1000_82546
) {
1296 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1303 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1304 * @adapter: board private structure
1305 * @txdr: tx descriptor ring (for a specific queue) to setup
1307 * Return 0 on success, negative on failure
1311 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1312 struct e1000_tx_ring
*txdr
)
1314 struct pci_dev
*pdev
= adapter
->pdev
;
1317 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1318 txdr
->buffer_info
= vmalloc(size
);
1319 if (!txdr
->buffer_info
) {
1321 "Unable to allocate memory for the transmit descriptor ring\n");
1324 memset(txdr
->buffer_info
, 0, size
);
1326 /* round up to nearest 4K */
1328 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1329 E1000_ROUNDUP(txdr
->size
, 4096);
1331 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1334 vfree(txdr
->buffer_info
);
1336 "Unable to allocate memory for the transmit descriptor ring\n");
1340 /* Fix for errata 23, can't cross 64kB boundary */
1341 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1342 void *olddesc
= txdr
->desc
;
1343 dma_addr_t olddma
= txdr
->dma
;
1344 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1345 "at %p\n", txdr
->size
, txdr
->desc
);
1346 /* Try again, without freeing the previous */
1347 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1348 /* Failed allocation, critical failure */
1350 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1351 goto setup_tx_desc_die
;
1354 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1356 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1358 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1360 "Unable to allocate aligned memory "
1361 "for the transmit descriptor ring\n");
1362 vfree(txdr
->buffer_info
);
1365 /* Free old allocation, new allocation was successful */
1366 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1369 memset(txdr
->desc
, 0, txdr
->size
);
1371 txdr
->next_to_use
= 0;
1372 txdr
->next_to_clean
= 0;
1373 spin_lock_init(&txdr
->tx_lock
);
1379 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1380 * (Descriptors) for all queues
1381 * @adapter: board private structure
1383 * If this function returns with an error, then it's possible one or
1384 * more of the rings is populated (while the rest are not). It is the
1385 * callers duty to clean those orphaned rings.
1387 * Return 0 on success, negative on failure
1391 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1395 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1396 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1399 "Allocation for Tx Queue %u failed\n", i
);
1408 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1409 * @adapter: board private structure
1411 * Configure the Tx unit of the MAC after a reset.
1415 e1000_configure_tx(struct e1000_adapter
*adapter
)
1418 struct e1000_hw
*hw
= &adapter
->hw
;
1419 uint32_t tdlen
, tctl
, tipg
, tarc
;
1420 uint32_t ipgr1
, ipgr2
;
1422 /* Setup the HW Tx Head and Tail descriptor pointers */
1424 switch (adapter
->num_tx_queues
) {
1427 tdba
= adapter
->tx_ring
[0].dma
;
1428 tdlen
= adapter
->tx_ring
[0].count
*
1429 sizeof(struct e1000_tx_desc
);
1430 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1431 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1432 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1433 E1000_WRITE_REG(hw
, TDT
, 0);
1434 E1000_WRITE_REG(hw
, TDH
, 0);
1435 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1436 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1440 /* Set the default values for the Tx Inter Packet Gap timer */
1442 if (hw
->media_type
== e1000_media_type_fiber
||
1443 hw
->media_type
== e1000_media_type_internal_serdes
)
1444 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1446 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1448 switch (hw
->mac_type
) {
1449 case e1000_82542_rev2_0
:
1450 case e1000_82542_rev2_1
:
1451 tipg
= DEFAULT_82542_TIPG_IPGT
;
1452 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1453 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1455 case e1000_80003es2lan
:
1456 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1457 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1460 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1461 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1464 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1465 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1466 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1468 /* Set the Tx Interrupt Delay register */
1470 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1471 if (hw
->mac_type
>= e1000_82540
)
1472 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1474 /* Program the Transmit Control Register */
1476 tctl
= E1000_READ_REG(hw
, TCTL
);
1478 tctl
&= ~E1000_TCTL_CT
;
1479 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1480 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1483 /* disable Multiple Reads for debugging */
1484 tctl
&= ~E1000_TCTL_MULR
;
1487 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1488 tarc
= E1000_READ_REG(hw
, TARC0
);
1489 tarc
|= ((1 << 25) | (1 << 21));
1490 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1491 tarc
= E1000_READ_REG(hw
, TARC1
);
1493 if (tctl
& E1000_TCTL_MULR
)
1497 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1498 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1499 tarc
= E1000_READ_REG(hw
, TARC0
);
1501 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1502 tarc
= E1000_READ_REG(hw
, TARC1
);
1504 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1507 e1000_config_collision_dist(hw
);
1509 /* Setup Transmit Descriptor Settings for eop descriptor */
1510 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1513 if (hw
->mac_type
< e1000_82543
)
1514 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1516 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1518 /* Cache if we're 82544 running in PCI-X because we'll
1519 * need this to apply a workaround later in the send path. */
1520 if (hw
->mac_type
== e1000_82544
&&
1521 hw
->bus_type
== e1000_bus_type_pcix
)
1522 adapter
->pcix_82544
= 1;
1524 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1529 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1530 * @adapter: board private structure
1531 * @rxdr: rx descriptor ring (for a specific queue) to setup
1533 * Returns 0 on success, negative on failure
1537 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1538 struct e1000_rx_ring
*rxdr
)
1540 struct pci_dev
*pdev
= adapter
->pdev
;
1543 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1544 rxdr
->buffer_info
= vmalloc(size
);
1545 if (!rxdr
->buffer_info
) {
1547 "Unable to allocate memory for the receive descriptor ring\n");
1550 memset(rxdr
->buffer_info
, 0, size
);
1552 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1553 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1554 if (!rxdr
->ps_page
) {
1555 vfree(rxdr
->buffer_info
);
1557 "Unable to allocate memory for the receive descriptor ring\n");
1560 memset(rxdr
->ps_page
, 0, size
);
1562 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1563 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1564 if (!rxdr
->ps_page_dma
) {
1565 vfree(rxdr
->buffer_info
);
1566 kfree(rxdr
->ps_page
);
1568 "Unable to allocate memory for the receive descriptor ring\n");
1571 memset(rxdr
->ps_page_dma
, 0, size
);
1573 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1574 desc_len
= sizeof(struct e1000_rx_desc
);
1576 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1578 /* Round up to nearest 4K */
1580 rxdr
->size
= rxdr
->count
* desc_len
;
1581 E1000_ROUNDUP(rxdr
->size
, 4096);
1583 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1587 "Unable to allocate memory for the receive descriptor ring\n");
1589 vfree(rxdr
->buffer_info
);
1590 kfree(rxdr
->ps_page
);
1591 kfree(rxdr
->ps_page_dma
);
1595 /* Fix for errata 23, can't cross 64kB boundary */
1596 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1597 void *olddesc
= rxdr
->desc
;
1598 dma_addr_t olddma
= rxdr
->dma
;
1599 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1600 "at %p\n", rxdr
->size
, rxdr
->desc
);
1601 /* Try again, without freeing the previous */
1602 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1603 /* Failed allocation, critical failure */
1605 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1607 "Unable to allocate memory "
1608 "for the receive descriptor ring\n");
1609 goto setup_rx_desc_die
;
1612 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1614 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1616 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1618 "Unable to allocate aligned memory "
1619 "for the receive descriptor ring\n");
1620 goto setup_rx_desc_die
;
1622 /* Free old allocation, new allocation was successful */
1623 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1626 memset(rxdr
->desc
, 0, rxdr
->size
);
1628 rxdr
->next_to_clean
= 0;
1629 rxdr
->next_to_use
= 0;
1635 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1636 * (Descriptors) for all queues
1637 * @adapter: board private structure
1639 * If this function returns with an error, then it's possible one or
1640 * more of the rings is populated (while the rest are not). It is the
1641 * callers duty to clean those orphaned rings.
1643 * Return 0 on success, negative on failure
1647 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1651 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1652 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1655 "Allocation for Rx Queue %u failed\n", i
);
1664 * e1000_setup_rctl - configure the receive control registers
1665 * @adapter: Board private structure
1667 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1668 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1670 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1672 uint32_t rctl
, rfctl
;
1673 uint32_t psrctl
= 0;
1674 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1678 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1680 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1682 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1683 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1684 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1686 if (adapter
->hw
.tbi_compatibility_on
== 1)
1687 rctl
|= E1000_RCTL_SBP
;
1689 rctl
&= ~E1000_RCTL_SBP
;
1691 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1692 rctl
&= ~E1000_RCTL_LPE
;
1694 rctl
|= E1000_RCTL_LPE
;
1696 /* Setup buffer sizes */
1697 rctl
&= ~E1000_RCTL_SZ_4096
;
1698 rctl
|= E1000_RCTL_BSEX
;
1699 switch (adapter
->rx_buffer_len
) {
1700 case E1000_RXBUFFER_256
:
1701 rctl
|= E1000_RCTL_SZ_256
;
1702 rctl
&= ~E1000_RCTL_BSEX
;
1704 case E1000_RXBUFFER_512
:
1705 rctl
|= E1000_RCTL_SZ_512
;
1706 rctl
&= ~E1000_RCTL_BSEX
;
1708 case E1000_RXBUFFER_1024
:
1709 rctl
|= E1000_RCTL_SZ_1024
;
1710 rctl
&= ~E1000_RCTL_BSEX
;
1712 case E1000_RXBUFFER_2048
:
1714 rctl
|= E1000_RCTL_SZ_2048
;
1715 rctl
&= ~E1000_RCTL_BSEX
;
1717 case E1000_RXBUFFER_4096
:
1718 rctl
|= E1000_RCTL_SZ_4096
;
1720 case E1000_RXBUFFER_8192
:
1721 rctl
|= E1000_RCTL_SZ_8192
;
1723 case E1000_RXBUFFER_16384
:
1724 rctl
|= E1000_RCTL_SZ_16384
;
1728 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1729 /* 82571 and greater support packet-split where the protocol
1730 * header is placed in skb->data and the packet data is
1731 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1732 * In the case of a non-split, skb->data is linearly filled,
1733 * followed by the page buffers. Therefore, skb->data is
1734 * sized to hold the largest protocol header.
1736 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1737 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1739 adapter
->rx_ps_pages
= pages
;
1741 adapter
->rx_ps_pages
= 0;
1743 if (adapter
->rx_ps_pages
) {
1744 /* Configure extra packet-split registers */
1745 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1746 rfctl
|= E1000_RFCTL_EXTEN
;
1747 /* disable IPv6 packet split support */
1748 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1749 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1751 rctl
|= E1000_RCTL_DTYP_PS
;
1753 psrctl
|= adapter
->rx_ps_bsize0
>>
1754 E1000_PSRCTL_BSIZE0_SHIFT
;
1756 switch (adapter
->rx_ps_pages
) {
1758 psrctl
|= PAGE_SIZE
<<
1759 E1000_PSRCTL_BSIZE3_SHIFT
;
1761 psrctl
|= PAGE_SIZE
<<
1762 E1000_PSRCTL_BSIZE2_SHIFT
;
1764 psrctl
|= PAGE_SIZE
>>
1765 E1000_PSRCTL_BSIZE1_SHIFT
;
1769 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1772 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1776 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1777 * @adapter: board private structure
1779 * Configure the Rx unit of the MAC after a reset.
1783 e1000_configure_rx(struct e1000_adapter
*adapter
)
1786 struct e1000_hw
*hw
= &adapter
->hw
;
1787 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1789 if (adapter
->rx_ps_pages
) {
1790 /* this is a 32 byte descriptor */
1791 rdlen
= adapter
->rx_ring
[0].count
*
1792 sizeof(union e1000_rx_desc_packet_split
);
1793 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1794 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1796 rdlen
= adapter
->rx_ring
[0].count
*
1797 sizeof(struct e1000_rx_desc
);
1798 adapter
->clean_rx
= e1000_clean_rx_irq
;
1799 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1802 /* disable receives while setting up the descriptors */
1803 rctl
= E1000_READ_REG(hw
, RCTL
);
1804 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1806 /* set the Receive Delay Timer Register */
1807 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1809 if (hw
->mac_type
>= e1000_82540
) {
1810 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1811 if (adapter
->itr
> 1)
1812 E1000_WRITE_REG(hw
, ITR
,
1813 1000000000 / (adapter
->itr
* 256));
1816 if (hw
->mac_type
>= e1000_82571
) {
1817 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1818 /* Reset delay timers after every interrupt */
1819 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1820 #ifdef CONFIG_E1000_NAPI
1821 /* Auto-Mask interrupts upon ICR read. */
1822 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1824 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1825 E1000_WRITE_REG(hw
, IAM
, ~0);
1826 E1000_WRITE_FLUSH(hw
);
1829 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1830 * the Base and Length of the Rx Descriptor Ring */
1831 switch (adapter
->num_rx_queues
) {
1834 rdba
= adapter
->rx_ring
[0].dma
;
1835 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1836 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1837 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1838 E1000_WRITE_REG(hw
, RDT
, 0);
1839 E1000_WRITE_REG(hw
, RDH
, 0);
1840 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1841 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1845 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1846 if (hw
->mac_type
>= e1000_82543
) {
1847 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1848 if (adapter
->rx_csum
== TRUE
) {
1849 rxcsum
|= E1000_RXCSUM_TUOFL
;
1851 /* Enable 82571 IPv4 payload checksum for UDP fragments
1852 * Must be used in conjunction with packet-split. */
1853 if ((hw
->mac_type
>= e1000_82571
) &&
1854 (adapter
->rx_ps_pages
)) {
1855 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1858 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1859 /* don't need to clear IPPCSE as it defaults to 0 */
1861 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1864 /* Enable Receives */
1865 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1869 * e1000_free_tx_resources - Free Tx Resources per Queue
1870 * @adapter: board private structure
1871 * @tx_ring: Tx descriptor ring for a specific queue
1873 * Free all transmit software resources
1877 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1878 struct e1000_tx_ring
*tx_ring
)
1880 struct pci_dev
*pdev
= adapter
->pdev
;
1882 e1000_clean_tx_ring(adapter
, tx_ring
);
1884 vfree(tx_ring
->buffer_info
);
1885 tx_ring
->buffer_info
= NULL
;
1887 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1889 tx_ring
->desc
= NULL
;
1893 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1894 * @adapter: board private structure
1896 * Free all transmit software resources
1900 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1904 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1905 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1909 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1910 struct e1000_buffer
*buffer_info
)
1912 if (buffer_info
->dma
) {
1913 pci_unmap_page(adapter
->pdev
,
1915 buffer_info
->length
,
1918 if (buffer_info
->skb
)
1919 dev_kfree_skb_any(buffer_info
->skb
);
1920 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1924 * e1000_clean_tx_ring - Free Tx Buffers
1925 * @adapter: board private structure
1926 * @tx_ring: ring to be cleaned
1930 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1931 struct e1000_tx_ring
*tx_ring
)
1933 struct e1000_buffer
*buffer_info
;
1937 /* Free all the Tx ring sk_buffs */
1939 for (i
= 0; i
< tx_ring
->count
; i
++) {
1940 buffer_info
= &tx_ring
->buffer_info
[i
];
1941 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1944 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1945 memset(tx_ring
->buffer_info
, 0, size
);
1947 /* Zero out the descriptor ring */
1949 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1951 tx_ring
->next_to_use
= 0;
1952 tx_ring
->next_to_clean
= 0;
1953 tx_ring
->last_tx_tso
= 0;
1955 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1956 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1960 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1961 * @adapter: board private structure
1965 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1969 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1970 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1974 * e1000_free_rx_resources - Free Rx Resources
1975 * @adapter: board private structure
1976 * @rx_ring: ring to clean the resources from
1978 * Free all receive software resources
1982 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1983 struct e1000_rx_ring
*rx_ring
)
1985 struct pci_dev
*pdev
= adapter
->pdev
;
1987 e1000_clean_rx_ring(adapter
, rx_ring
);
1989 vfree(rx_ring
->buffer_info
);
1990 rx_ring
->buffer_info
= NULL
;
1991 kfree(rx_ring
->ps_page
);
1992 rx_ring
->ps_page
= NULL
;
1993 kfree(rx_ring
->ps_page_dma
);
1994 rx_ring
->ps_page_dma
= NULL
;
1996 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1998 rx_ring
->desc
= NULL
;
2002 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2003 * @adapter: board private structure
2005 * Free all receive software resources
2009 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2013 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2014 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2018 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2019 * @adapter: board private structure
2020 * @rx_ring: ring to free buffers from
2024 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2025 struct e1000_rx_ring
*rx_ring
)
2027 struct e1000_buffer
*buffer_info
;
2028 struct e1000_ps_page
*ps_page
;
2029 struct e1000_ps_page_dma
*ps_page_dma
;
2030 struct pci_dev
*pdev
= adapter
->pdev
;
2034 /* Free all the Rx ring sk_buffs */
2035 for (i
= 0; i
< rx_ring
->count
; i
++) {
2036 buffer_info
= &rx_ring
->buffer_info
[i
];
2037 if (buffer_info
->skb
) {
2038 pci_unmap_single(pdev
,
2040 buffer_info
->length
,
2041 PCI_DMA_FROMDEVICE
);
2043 dev_kfree_skb(buffer_info
->skb
);
2044 buffer_info
->skb
= NULL
;
2046 ps_page
= &rx_ring
->ps_page
[i
];
2047 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2048 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2049 if (!ps_page
->ps_page
[j
]) break;
2050 pci_unmap_page(pdev
,
2051 ps_page_dma
->ps_page_dma
[j
],
2052 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2053 ps_page_dma
->ps_page_dma
[j
] = 0;
2054 put_page(ps_page
->ps_page
[j
]);
2055 ps_page
->ps_page
[j
] = NULL
;
2059 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2060 memset(rx_ring
->buffer_info
, 0, size
);
2061 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2062 memset(rx_ring
->ps_page
, 0, size
);
2063 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2064 memset(rx_ring
->ps_page_dma
, 0, size
);
2066 /* Zero out the descriptor ring */
2068 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2070 rx_ring
->next_to_clean
= 0;
2071 rx_ring
->next_to_use
= 0;
2073 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2074 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2078 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2079 * @adapter: board private structure
2083 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2087 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2088 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2091 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2092 * and memory write and invalidate disabled for certain operations
2095 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2097 struct net_device
*netdev
= adapter
->netdev
;
2100 e1000_pci_clear_mwi(&adapter
->hw
);
2102 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2103 rctl
|= E1000_RCTL_RST
;
2104 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2105 E1000_WRITE_FLUSH(&adapter
->hw
);
2108 if (netif_running(netdev
))
2109 e1000_clean_all_rx_rings(adapter
);
2113 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2115 struct net_device
*netdev
= adapter
->netdev
;
2118 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2119 rctl
&= ~E1000_RCTL_RST
;
2120 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2121 E1000_WRITE_FLUSH(&adapter
->hw
);
2124 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2125 e1000_pci_set_mwi(&adapter
->hw
);
2127 if (netif_running(netdev
)) {
2128 /* No need to loop, because 82542 supports only 1 queue */
2129 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2130 e1000_configure_rx(adapter
);
2131 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2136 * e1000_set_mac - Change the Ethernet Address of the NIC
2137 * @netdev: network interface device structure
2138 * @p: pointer to an address structure
2140 * Returns 0 on success, negative on failure
2144 e1000_set_mac(struct net_device
*netdev
, void *p
)
2146 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2147 struct sockaddr
*addr
= p
;
2149 if (!is_valid_ether_addr(addr
->sa_data
))
2150 return -EADDRNOTAVAIL
;
2152 /* 82542 2.0 needs to be in reset to write receive address registers */
2154 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2155 e1000_enter_82542_rst(adapter
);
2157 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2158 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2160 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2162 /* With 82571 controllers, LAA may be overwritten (with the default)
2163 * due to controller reset from the other port. */
2164 if (adapter
->hw
.mac_type
== e1000_82571
) {
2165 /* activate the work around */
2166 adapter
->hw
.laa_is_present
= 1;
2168 /* Hold a copy of the LAA in RAR[14] This is done so that
2169 * between the time RAR[0] gets clobbered and the time it
2170 * gets fixed (in e1000_watchdog), the actual LAA is in one
2171 * of the RARs and no incoming packets directed to this port
2172 * are dropped. Eventaully the LAA will be in RAR[0] and
2174 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2175 E1000_RAR_ENTRIES
- 1);
2178 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2179 e1000_leave_82542_rst(adapter
);
2185 * e1000_set_multi - Multicast and Promiscuous mode set
2186 * @netdev: network interface device structure
2188 * The set_multi entry point is called whenever the multicast address
2189 * list or the network interface flags are updated. This routine is
2190 * responsible for configuring the hardware for proper multicast,
2191 * promiscuous mode, and all-multi behavior.
2195 e1000_set_multi(struct net_device
*netdev
)
2197 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2198 struct e1000_hw
*hw
= &adapter
->hw
;
2199 struct dev_mc_list
*mc_ptr
;
2201 uint32_t hash_value
;
2202 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2203 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2204 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2205 E1000_NUM_MTA_REGISTERS
;
2207 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2208 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2210 /* reserve RAR[14] for LAA over-write work-around */
2211 if (adapter
->hw
.mac_type
== e1000_82571
)
2214 /* Check for Promiscuous and All Multicast modes */
2216 rctl
= E1000_READ_REG(hw
, RCTL
);
2218 if (netdev
->flags
& IFF_PROMISC
) {
2219 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2220 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2221 rctl
|= E1000_RCTL_MPE
;
2222 rctl
&= ~E1000_RCTL_UPE
;
2224 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2227 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2229 /* 82542 2.0 needs to be in reset to write receive address registers */
2231 if (hw
->mac_type
== e1000_82542_rev2_0
)
2232 e1000_enter_82542_rst(adapter
);
2234 /* load the first 14 multicast address into the exact filters 1-14
2235 * RAR 0 is used for the station MAC adddress
2236 * if there are not 14 addresses, go ahead and clear the filters
2237 * -- with 82571 controllers only 0-13 entries are filled here
2239 mc_ptr
= netdev
->mc_list
;
2241 for (i
= 1; i
< rar_entries
; i
++) {
2243 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2244 mc_ptr
= mc_ptr
->next
;
2246 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2247 E1000_WRITE_FLUSH(hw
);
2248 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2249 E1000_WRITE_FLUSH(hw
);
2253 /* clear the old settings from the multicast hash table */
2255 for (i
= 0; i
< mta_reg_count
; i
++) {
2256 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2257 E1000_WRITE_FLUSH(hw
);
2260 /* load any remaining addresses into the hash table */
2262 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2263 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2264 e1000_mta_set(hw
, hash_value
);
2267 if (hw
->mac_type
== e1000_82542_rev2_0
)
2268 e1000_leave_82542_rst(adapter
);
2271 /* Need to wait a few seconds after link up to get diagnostic information from
2275 e1000_update_phy_info(unsigned long data
)
2277 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2278 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2282 * e1000_82547_tx_fifo_stall - Timer Call-back
2283 * @data: pointer to adapter cast into an unsigned long
2287 e1000_82547_tx_fifo_stall(unsigned long data
)
2289 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2290 struct net_device
*netdev
= adapter
->netdev
;
2293 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2294 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2295 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2296 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2297 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2298 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2299 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2300 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2301 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2302 tctl
& ~E1000_TCTL_EN
);
2303 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2304 adapter
->tx_head_addr
);
2305 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2306 adapter
->tx_head_addr
);
2307 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2308 adapter
->tx_head_addr
);
2309 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2310 adapter
->tx_head_addr
);
2311 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2312 E1000_WRITE_FLUSH(&adapter
->hw
);
2314 adapter
->tx_fifo_head
= 0;
2315 atomic_set(&adapter
->tx_fifo_stall
, 0);
2316 netif_wake_queue(netdev
);
2318 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2324 * e1000_watchdog - Timer Call-back
2325 * @data: pointer to adapter cast into an unsigned long
2328 e1000_watchdog(unsigned long data
)
2330 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2331 struct net_device
*netdev
= adapter
->netdev
;
2332 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2333 uint32_t link
, tctl
;
2336 ret_val
= e1000_check_for_link(&adapter
->hw
);
2337 if ((ret_val
== E1000_ERR_PHY
) &&
2338 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2339 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2340 /* See e1000_kumeran_lock_loss_workaround() */
2342 "Gigabit has been disabled, downgrading speed\n");
2344 if (adapter
->hw
.mac_type
== e1000_82573
) {
2345 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2346 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2347 e1000_update_mng_vlan(adapter
);
2350 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2351 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2352 link
= !adapter
->hw
.serdes_link_down
;
2354 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2357 if (!netif_carrier_ok(netdev
)) {
2358 boolean_t txb2b
= 1;
2359 e1000_get_speed_and_duplex(&adapter
->hw
,
2360 &adapter
->link_speed
,
2361 &adapter
->link_duplex
);
2363 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2364 adapter
->link_speed
,
2365 adapter
->link_duplex
== FULL_DUPLEX
?
2366 "Full Duplex" : "Half Duplex");
2368 /* tweak tx_queue_len according to speed/duplex
2369 * and adjust the timeout factor */
2370 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2371 adapter
->tx_timeout_factor
= 1;
2372 switch (adapter
->link_speed
) {
2375 netdev
->tx_queue_len
= 10;
2376 adapter
->tx_timeout_factor
= 8;
2380 netdev
->tx_queue_len
= 100;
2381 /* maybe add some timeout factor ? */
2385 if ((adapter
->hw
.mac_type
== e1000_82571
||
2386 adapter
->hw
.mac_type
== e1000_82572
) &&
2388 #define SPEED_MODE_BIT (1 << 21)
2390 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2391 tarc0
&= ~SPEED_MODE_BIT
;
2392 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2396 /* disable TSO for pcie and 10/100 speeds, to avoid
2397 * some hardware issues */
2398 if (!adapter
->tso_force
&&
2399 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2400 switch (adapter
->link_speed
) {
2404 "10/100 speed: disabling TSO\n");
2405 netdev
->features
&= ~NETIF_F_TSO
;
2408 netdev
->features
|= NETIF_F_TSO
;
2417 /* enable transmits in the hardware, need to do this
2418 * after setting TARC0 */
2419 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2420 tctl
|= E1000_TCTL_EN
;
2421 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2423 netif_carrier_on(netdev
);
2424 netif_wake_queue(netdev
);
2425 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2426 adapter
->smartspeed
= 0;
2429 if (netif_carrier_ok(netdev
)) {
2430 adapter
->link_speed
= 0;
2431 adapter
->link_duplex
= 0;
2432 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2433 netif_carrier_off(netdev
);
2434 netif_stop_queue(netdev
);
2435 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2437 /* 80003ES2LAN workaround--
2438 * For packet buffer work-around on link down event;
2439 * disable receives in the ISR and
2440 * reset device here in the watchdog
2442 if (adapter
->hw
.mac_type
== e1000_80003es2lan
) {
2444 schedule_work(&adapter
->reset_task
);
2448 e1000_smartspeed(adapter
);
2451 e1000_update_stats(adapter
);
2453 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2454 adapter
->tpt_old
= adapter
->stats
.tpt
;
2455 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2456 adapter
->colc_old
= adapter
->stats
.colc
;
2458 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2459 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2460 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2461 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2463 e1000_update_adaptive(&adapter
->hw
);
2465 if (!netif_carrier_ok(netdev
)) {
2466 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2467 /* We've lost link, so the controller stops DMA,
2468 * but we've got queued Tx work that's never going
2469 * to get done, so reset controller to flush Tx.
2470 * (Do the reset outside of interrupt context). */
2471 adapter
->tx_timeout_count
++;
2472 schedule_work(&adapter
->reset_task
);
2476 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2477 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2478 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2479 * asymmetrical Tx or Rx gets ITR=8000; everyone
2480 * else is between 2000-8000. */
2481 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2482 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2483 adapter
->gotcl
- adapter
->gorcl
:
2484 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2485 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2486 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2489 /* Cause software interrupt to ensure rx ring is cleaned */
2490 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2492 /* Force detection of hung controller every watchdog period */
2493 adapter
->detect_tx_hung
= TRUE
;
2495 /* With 82571 controllers, LAA may be overwritten due to controller
2496 * reset from the other port. Set the appropriate LAA in RAR[0] */
2497 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2498 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2500 /* Reset the timer */
2501 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2504 #define E1000_TX_FLAGS_CSUM 0x00000001
2505 #define E1000_TX_FLAGS_VLAN 0x00000002
2506 #define E1000_TX_FLAGS_TSO 0x00000004
2507 #define E1000_TX_FLAGS_IPV4 0x00000008
2508 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2509 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2512 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2513 struct sk_buff
*skb
)
2516 struct e1000_context_desc
*context_desc
;
2517 struct e1000_buffer
*buffer_info
;
2519 uint32_t cmd_length
= 0;
2520 uint16_t ipcse
= 0, tucse
, mss
;
2521 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2524 if (skb_is_gso(skb
)) {
2525 if (skb_header_cloned(skb
)) {
2526 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2531 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2532 mss
= skb_shinfo(skb
)->gso_size
;
2533 if (skb
->protocol
== htons(ETH_P_IP
)) {
2534 skb
->nh
.iph
->tot_len
= 0;
2535 skb
->nh
.iph
->check
= 0;
2537 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2542 cmd_length
= E1000_TXD_CMD_IP
;
2543 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2544 #ifdef NETIF_F_TSO_IPV6
2545 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2546 skb
->nh
.ipv6h
->payload_len
= 0;
2548 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2549 &skb
->nh
.ipv6h
->daddr
,
2556 ipcss
= skb
->nh
.raw
- skb
->data
;
2557 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2558 tucss
= skb
->h
.raw
- skb
->data
;
2559 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2562 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2563 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2565 i
= tx_ring
->next_to_use
;
2566 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2567 buffer_info
= &tx_ring
->buffer_info
[i
];
2569 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2570 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2571 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2572 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2573 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2574 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2575 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2576 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2577 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2579 buffer_info
->time_stamp
= jiffies
;
2581 if (++i
== tx_ring
->count
) i
= 0;
2582 tx_ring
->next_to_use
= i
;
2592 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2593 struct sk_buff
*skb
)
2595 struct e1000_context_desc
*context_desc
;
2596 struct e1000_buffer
*buffer_info
;
2600 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2601 css
= skb
->h
.raw
- skb
->data
;
2603 i
= tx_ring
->next_to_use
;
2604 buffer_info
= &tx_ring
->buffer_info
[i
];
2605 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2607 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2608 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2609 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2610 context_desc
->tcp_seg_setup
.data
= 0;
2611 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2613 buffer_info
->time_stamp
= jiffies
;
2615 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2616 tx_ring
->next_to_use
= i
;
2624 #define E1000_MAX_TXD_PWR 12
2625 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2628 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2629 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2630 unsigned int nr_frags
, unsigned int mss
)
2632 struct e1000_buffer
*buffer_info
;
2633 unsigned int len
= skb
->len
;
2634 unsigned int offset
= 0, size
, count
= 0, i
;
2636 len
-= skb
->data_len
;
2638 i
= tx_ring
->next_to_use
;
2641 buffer_info
= &tx_ring
->buffer_info
[i
];
2642 size
= min(len
, max_per_txd
);
2644 /* Workaround for Controller erratum --
2645 * descriptor for non-tso packet in a linear SKB that follows a
2646 * tso gets written back prematurely before the data is fully
2647 * DMA'd to the controller */
2648 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2650 tx_ring
->last_tx_tso
= 0;
2654 /* Workaround for premature desc write-backs
2655 * in TSO mode. Append 4-byte sentinel desc */
2656 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2659 /* work-around for errata 10 and it applies
2660 * to all controllers in PCI-X mode
2661 * The fix is to make sure that the first descriptor of a
2662 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2664 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2665 (size
> 2015) && count
== 0))
2668 /* Workaround for potential 82544 hang in PCI-X. Avoid
2669 * terminating buffers within evenly-aligned dwords. */
2670 if (unlikely(adapter
->pcix_82544
&&
2671 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2675 buffer_info
->length
= size
;
2677 pci_map_single(adapter
->pdev
,
2681 buffer_info
->time_stamp
= jiffies
;
2686 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2689 for (f
= 0; f
< nr_frags
; f
++) {
2690 struct skb_frag_struct
*frag
;
2692 frag
= &skb_shinfo(skb
)->frags
[f
];
2694 offset
= frag
->page_offset
;
2697 buffer_info
= &tx_ring
->buffer_info
[i
];
2698 size
= min(len
, max_per_txd
);
2700 /* Workaround for premature desc write-backs
2701 * in TSO mode. Append 4-byte sentinel desc */
2702 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2705 /* Workaround for potential 82544 hang in PCI-X.
2706 * Avoid terminating buffers within evenly-aligned
2708 if (unlikely(adapter
->pcix_82544
&&
2709 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2713 buffer_info
->length
= size
;
2715 pci_map_page(adapter
->pdev
,
2720 buffer_info
->time_stamp
= jiffies
;
2725 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2729 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2730 tx_ring
->buffer_info
[i
].skb
= skb
;
2731 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2737 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2738 int tx_flags
, int count
)
2740 struct e1000_tx_desc
*tx_desc
= NULL
;
2741 struct e1000_buffer
*buffer_info
;
2742 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2745 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2746 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2748 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2750 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2751 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2754 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2755 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2756 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2759 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2760 txd_lower
|= E1000_TXD_CMD_VLE
;
2761 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2764 i
= tx_ring
->next_to_use
;
2767 buffer_info
= &tx_ring
->buffer_info
[i
];
2768 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2769 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2770 tx_desc
->lower
.data
=
2771 cpu_to_le32(txd_lower
| buffer_info
->length
);
2772 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2773 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2776 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2778 /* Force memory writes to complete before letting h/w
2779 * know there are new descriptors to fetch. (Only
2780 * applicable for weak-ordered memory model archs,
2781 * such as IA-64). */
2784 tx_ring
->next_to_use
= i
;
2785 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2789 * 82547 workaround to avoid controller hang in half-duplex environment.
2790 * The workaround is to avoid queuing a large packet that would span
2791 * the internal Tx FIFO ring boundary by notifying the stack to resend
2792 * the packet at a later time. This gives the Tx FIFO an opportunity to
2793 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2794 * to the beginning of the Tx FIFO.
2797 #define E1000_FIFO_HDR 0x10
2798 #define E1000_82547_PAD_LEN 0x3E0
2801 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2803 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2804 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2806 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2808 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2809 goto no_fifo_stall_required
;
2811 if (atomic_read(&adapter
->tx_fifo_stall
))
2814 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2815 atomic_set(&adapter
->tx_fifo_stall
, 1);
2819 no_fifo_stall_required
:
2820 adapter
->tx_fifo_head
+= skb_fifo_len
;
2821 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2822 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2826 #define MINIMUM_DHCP_PACKET_SIZE 282
2828 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2830 struct e1000_hw
*hw
= &adapter
->hw
;
2831 uint16_t length
, offset
;
2832 if (vlan_tx_tag_present(skb
)) {
2833 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2834 ( adapter
->hw
.mng_cookie
.status
&
2835 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2838 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2839 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2840 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2841 const struct iphdr
*ip
=
2842 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2843 if (IPPROTO_UDP
== ip
->protocol
) {
2844 struct udphdr
*udp
=
2845 (struct udphdr
*)((uint8_t *)ip
+
2847 if (ntohs(udp
->dest
) == 67) {
2848 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2849 length
= skb
->len
- offset
;
2851 return e1000_mng_write_dhcp_info(hw
,
2861 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2863 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2865 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2866 struct e1000_tx_ring
*tx_ring
;
2867 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2868 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2869 unsigned int tx_flags
= 0;
2870 unsigned int len
= skb
->len
;
2871 unsigned long flags
;
2872 unsigned int nr_frags
= 0;
2873 unsigned int mss
= 0;
2877 len
-= skb
->data_len
;
2879 tx_ring
= adapter
->tx_ring
;
2881 if (unlikely(skb
->len
<= 0)) {
2882 dev_kfree_skb_any(skb
);
2883 return NETDEV_TX_OK
;
2887 mss
= skb_shinfo(skb
)->gso_size
;
2888 /* The controller does a simple calculation to
2889 * make sure there is enough room in the FIFO before
2890 * initiating the DMA for each buffer. The calc is:
2891 * 4 = ceil(buffer len/mss). To make sure we don't
2892 * overrun the FIFO, adjust the max buffer len if mss
2896 max_per_txd
= min(mss
<< 2, max_per_txd
);
2897 max_txd_pwr
= fls(max_per_txd
) - 1;
2899 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2900 * points to just header, pull a few bytes of payload from
2901 * frags into skb->data */
2902 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2903 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2904 switch (adapter
->hw
.mac_type
) {
2905 unsigned int pull_size
;
2910 pull_size
= min((unsigned int)4, skb
->data_len
);
2911 if (!__pskb_pull_tail(skb
, pull_size
)) {
2913 "__pskb_pull_tail failed.\n");
2914 dev_kfree_skb_any(skb
);
2915 return NETDEV_TX_OK
;
2917 len
= skb
->len
- skb
->data_len
;
2926 /* reserve a descriptor for the offload context */
2927 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2931 if (skb
->ip_summed
== CHECKSUM_HW
)
2936 /* Controller Erratum workaround */
2937 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
2941 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2943 if (adapter
->pcix_82544
)
2946 /* work-around for errata 10 and it applies to all controllers
2947 * in PCI-X mode, so add one more descriptor to the count
2949 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2953 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2954 for (f
= 0; f
< nr_frags
; f
++)
2955 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2957 if (adapter
->pcix_82544
)
2961 if (adapter
->hw
.tx_pkt_filtering
&&
2962 (adapter
->hw
.mac_type
== e1000_82573
))
2963 e1000_transfer_dhcp_info(adapter
, skb
);
2965 local_irq_save(flags
);
2966 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2967 /* Collision - tell upper layer to requeue */
2968 local_irq_restore(flags
);
2969 return NETDEV_TX_LOCKED
;
2972 /* need: count + 2 desc gap to keep tail from touching
2973 * head, otherwise try next time */
2974 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2975 netif_stop_queue(netdev
);
2976 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2977 return NETDEV_TX_BUSY
;
2980 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2981 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2982 netif_stop_queue(netdev
);
2983 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2984 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2985 return NETDEV_TX_BUSY
;
2989 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2990 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2991 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2994 first
= tx_ring
->next_to_use
;
2996 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2998 dev_kfree_skb_any(skb
);
2999 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3000 return NETDEV_TX_OK
;
3004 tx_ring
->last_tx_tso
= 1;
3005 tx_flags
|= E1000_TX_FLAGS_TSO
;
3006 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3007 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3009 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3010 * 82571 hardware supports TSO capabilities for IPv6 as well...
3011 * no longer assume, we must. */
3012 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3013 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3015 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3016 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3017 max_per_txd
, nr_frags
, mss
));
3019 netdev
->trans_start
= jiffies
;
3021 /* Make sure there is space in the ring for the next send. */
3022 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
3023 netif_stop_queue(netdev
);
3025 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3026 return NETDEV_TX_OK
;
3030 * e1000_tx_timeout - Respond to a Tx Hang
3031 * @netdev: network interface device structure
3035 e1000_tx_timeout(struct net_device
*netdev
)
3037 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3039 /* Do the reset outside of interrupt context */
3040 adapter
->tx_timeout_count
++;
3041 schedule_work(&adapter
->reset_task
);
3045 e1000_reset_task(struct net_device
*netdev
)
3047 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3049 e1000_reinit_locked(adapter
);
3053 * e1000_get_stats - Get System Network Statistics
3054 * @netdev: network interface device structure
3056 * Returns the address of the device statistics structure.
3057 * The statistics are actually updated from the timer callback.
3060 static struct net_device_stats
*
3061 e1000_get_stats(struct net_device
*netdev
)
3063 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3065 /* only return the current stats */
3066 return &adapter
->net_stats
;
3070 * e1000_change_mtu - Change the Maximum Transfer Unit
3071 * @netdev: network interface device structure
3072 * @new_mtu: new value for maximum frame size
3074 * Returns 0 on success, negative on failure
3078 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3080 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3081 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3082 uint16_t eeprom_data
= 0;
3084 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3085 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3086 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3090 /* Adapter-specific max frame size limits. */
3091 switch (adapter
->hw
.mac_type
) {
3092 case e1000_undefined
... e1000_82542_rev2_1
:
3094 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3095 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3100 /* only enable jumbo frames if ASPM is disabled completely
3101 * this means both bits must be zero in 0x1A bits 3:2 */
3102 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3104 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
3105 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3107 "Jumbo Frames not supported.\n");
3112 /* fall through to get support */
3115 case e1000_80003es2lan
:
3116 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3117 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3118 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3123 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3127 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3128 * means we reserve 2 more, this pushes us to allocate from the next
3130 * i.e. RXBUFFER_2048 --> size-4096 slab */
3132 if (max_frame
<= E1000_RXBUFFER_256
)
3133 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3134 else if (max_frame
<= E1000_RXBUFFER_512
)
3135 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3136 else if (max_frame
<= E1000_RXBUFFER_1024
)
3137 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3138 else if (max_frame
<= E1000_RXBUFFER_2048
)
3139 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3140 else if (max_frame
<= E1000_RXBUFFER_4096
)
3141 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3142 else if (max_frame
<= E1000_RXBUFFER_8192
)
3143 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3144 else if (max_frame
<= E1000_RXBUFFER_16384
)
3145 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3147 /* adjust allocation if LPE protects us, and we aren't using SBP */
3148 if (!adapter
->hw
.tbi_compatibility_on
&&
3149 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3150 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3151 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3153 netdev
->mtu
= new_mtu
;
3155 if (netif_running(netdev
))
3156 e1000_reinit_locked(adapter
);
3158 adapter
->hw
.max_frame_size
= max_frame
;
3164 * e1000_update_stats - Update the board statistics counters
3165 * @adapter: board private structure
3169 e1000_update_stats(struct e1000_adapter
*adapter
)
3171 struct e1000_hw
*hw
= &adapter
->hw
;
3172 struct pci_dev
*pdev
= adapter
->pdev
;
3173 unsigned long flags
;
3176 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3179 * Prevent stats update while adapter is being reset, or if the pci
3180 * connection is down.
3182 if (adapter
->link_speed
== 0)
3184 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3187 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3189 /* these counters are modified from e1000_adjust_tbi_stats,
3190 * called from the interrupt context, so they must only
3191 * be written while holding adapter->stats_lock
3194 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3195 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3196 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3197 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3198 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3199 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3200 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3202 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3203 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3204 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3205 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3206 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3207 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3208 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3211 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3212 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3213 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3214 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3215 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3216 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3217 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3218 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3219 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3220 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3221 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3222 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3223 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3224 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3225 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3226 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3227 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3228 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3229 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3230 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3231 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3232 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3233 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3234 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3235 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3236 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3238 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3239 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3240 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3241 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3242 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3243 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3244 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3247 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3248 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3250 /* used for adaptive IFS */
3252 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3253 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3254 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3255 adapter
->stats
.colc
+= hw
->collision_delta
;
3257 if (hw
->mac_type
>= e1000_82543
) {
3258 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3259 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3260 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3261 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3262 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3263 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3265 if (hw
->mac_type
> e1000_82547_rev_2
) {
3266 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3267 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3269 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3270 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3271 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3272 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3273 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3274 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3275 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3276 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3280 /* Fill out the OS statistics structure */
3282 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3283 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3284 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3285 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3286 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3287 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3291 /* RLEC on some newer hardware can be incorrect so build
3292 * our own version based on RUC and ROC */
3293 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3294 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3295 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3296 adapter
->stats
.cexterr
;
3297 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3299 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3300 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3301 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3305 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3306 adapter
->stats
.latecol
;
3307 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3308 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3309 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3311 /* Tx Dropped needs to be maintained elsewhere */
3315 if (hw
->media_type
== e1000_media_type_copper
) {
3316 if ((adapter
->link_speed
== SPEED_1000
) &&
3317 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3318 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3319 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3322 if ((hw
->mac_type
<= e1000_82546
) &&
3323 (hw
->phy_type
== e1000_phy_m88
) &&
3324 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3325 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3328 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3332 * e1000_intr - Interrupt Handler
3333 * @irq: interrupt number
3334 * @data: pointer to a network interface device structure
3335 * @pt_regs: CPU registers structure
3339 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3341 struct net_device
*netdev
= data
;
3342 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3343 struct e1000_hw
*hw
= &adapter
->hw
;
3344 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3345 #ifndef CONFIG_E1000_NAPI
3348 /* Interrupt Auto-Mask...upon reading ICR,
3349 * interrupts are masked. No need for the
3350 * IMC write, but it does mean we should
3351 * account for it ASAP. */
3352 if (likely(hw
->mac_type
>= e1000_82571
))
3353 atomic_inc(&adapter
->irq_sem
);
3356 if (unlikely(!icr
)) {
3357 #ifdef CONFIG_E1000_NAPI
3358 if (hw
->mac_type
>= e1000_82571
)
3359 e1000_irq_enable(adapter
);
3361 return IRQ_NONE
; /* Not our interrupt */
3364 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3365 hw
->get_link_status
= 1;
3366 /* 80003ES2LAN workaround--
3367 * For packet buffer work-around on link down event;
3368 * disable receives here in the ISR and
3369 * reset adapter in watchdog
3371 if (netif_carrier_ok(netdev
) &&
3372 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3373 /* disable receives */
3374 rctl
= E1000_READ_REG(hw
, RCTL
);
3375 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3377 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3380 #ifdef CONFIG_E1000_NAPI
3381 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3382 atomic_inc(&adapter
->irq_sem
);
3383 E1000_WRITE_REG(hw
, IMC
, ~0);
3384 E1000_WRITE_FLUSH(hw
);
3386 if (likely(netif_rx_schedule_prep(netdev
)))
3387 __netif_rx_schedule(netdev
);
3389 e1000_irq_enable(adapter
);
3391 /* Writing IMC and IMS is needed for 82547.
3392 * Due to Hub Link bus being occupied, an interrupt
3393 * de-assertion message is not able to be sent.
3394 * When an interrupt assertion message is generated later,
3395 * two messages are re-ordered and sent out.
3396 * That causes APIC to think 82547 is in de-assertion
3397 * state, while 82547 is in assertion state, resulting
3398 * in dead lock. Writing IMC forces 82547 into
3399 * de-assertion state.
3401 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3402 atomic_inc(&adapter
->irq_sem
);
3403 E1000_WRITE_REG(hw
, IMC
, ~0);
3406 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3407 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3408 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3411 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3412 e1000_irq_enable(adapter
);
3419 #ifdef CONFIG_E1000_NAPI
3421 * e1000_clean - NAPI Rx polling callback
3422 * @adapter: board private structure
3426 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3428 struct e1000_adapter
*adapter
;
3429 int work_to_do
= min(*budget
, poll_dev
->quota
);
3430 int tx_cleaned
= 0, work_done
= 0;
3432 /* Must NOT use netdev_priv macro here. */
3433 adapter
= poll_dev
->priv
;
3435 /* Keep link state information with original netdev */
3436 if (!netif_carrier_ok(poll_dev
))
3439 /* e1000_clean is called per-cpu. This lock protects
3440 * tx_ring[0] from being cleaned by multiple cpus
3441 * simultaneously. A failure obtaining the lock means
3442 * tx_ring[0] is currently being cleaned anyway. */
3443 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3444 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3445 &adapter
->tx_ring
[0]);
3446 spin_unlock(&adapter
->tx_queue_lock
);
3449 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3450 &work_done
, work_to_do
);
3452 *budget
-= work_done
;
3453 poll_dev
->quota
-= work_done
;
3455 /* If no Tx and not enough Rx work done, exit the polling mode */
3456 if ((!tx_cleaned
&& (work_done
== 0)) ||
3457 !netif_running(poll_dev
)) {
3459 netif_rx_complete(poll_dev
);
3460 e1000_irq_enable(adapter
);
3469 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3470 * @adapter: board private structure
3474 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3475 struct e1000_tx_ring
*tx_ring
)
3477 struct net_device
*netdev
= adapter
->netdev
;
3478 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3479 struct e1000_buffer
*buffer_info
;
3480 unsigned int i
, eop
;
3481 #ifdef CONFIG_E1000_NAPI
3482 unsigned int count
= 0;
3484 boolean_t cleaned
= FALSE
;
3486 i
= tx_ring
->next_to_clean
;
3487 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3488 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3490 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3491 for (cleaned
= FALSE
; !cleaned
; ) {
3492 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3493 buffer_info
= &tx_ring
->buffer_info
[i
];
3494 cleaned
= (i
== eop
);
3496 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3497 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3499 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3503 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3504 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3505 #ifdef CONFIG_E1000_NAPI
3506 #define E1000_TX_WEIGHT 64
3507 /* weight of a sort for tx, to avoid endless transmit cleanup */
3508 if (count
++ == E1000_TX_WEIGHT
) break;
3512 tx_ring
->next_to_clean
= i
;
3514 #define TX_WAKE_THRESHOLD 32
3515 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3516 netif_carrier_ok(netdev
))) {
3517 spin_lock(&tx_ring
->tx_lock
);
3518 if (netif_queue_stopped(netdev
) &&
3519 (E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))
3520 netif_wake_queue(netdev
);
3521 spin_unlock(&tx_ring
->tx_lock
);
3524 if (adapter
->detect_tx_hung
) {
3525 /* Detect a transmit hang in hardware, this serializes the
3526 * check with the clearing of time_stamp and movement of i */
3527 adapter
->detect_tx_hung
= FALSE
;
3528 if (tx_ring
->buffer_info
[eop
].dma
&&
3529 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3530 (adapter
->tx_timeout_factor
* HZ
))
3531 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3532 E1000_STATUS_TXOFF
)) {
3534 /* detected Tx unit hang */
3535 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3539 " next_to_use <%x>\n"
3540 " next_to_clean <%x>\n"
3541 "buffer_info[next_to_clean]\n"
3542 " time_stamp <%lx>\n"
3543 " next_to_watch <%x>\n"
3545 " next_to_watch.status <%x>\n",
3546 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3547 sizeof(struct e1000_tx_ring
)),
3548 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3549 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3550 tx_ring
->next_to_use
,
3551 tx_ring
->next_to_clean
,
3552 tx_ring
->buffer_info
[eop
].time_stamp
,
3555 eop_desc
->upper
.fields
.status
);
3556 netif_stop_queue(netdev
);
3563 * e1000_rx_checksum - Receive Checksum Offload for 82543
3564 * @adapter: board private structure
3565 * @status_err: receive descriptor status and error fields
3566 * @csum: receive descriptor csum field
3567 * @sk_buff: socket buffer with received data
3571 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3572 uint32_t status_err
, uint32_t csum
,
3573 struct sk_buff
*skb
)
3575 uint16_t status
= (uint16_t)status_err
;
3576 uint8_t errors
= (uint8_t)(status_err
>> 24);
3577 skb
->ip_summed
= CHECKSUM_NONE
;
3579 /* 82543 or newer only */
3580 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3581 /* Ignore Checksum bit is set */
3582 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3583 /* TCP/UDP checksum error bit is set */
3584 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3585 /* let the stack verify checksum errors */
3586 adapter
->hw_csum_err
++;
3589 /* TCP/UDP Checksum has not been calculated */
3590 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3591 if (!(status
& E1000_RXD_STAT_TCPCS
))
3594 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3597 /* It must be a TCP or UDP packet with a valid checksum */
3598 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3599 /* TCP checksum is good */
3600 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3601 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3602 /* IP fragment with UDP payload */
3603 /* Hardware complements the payload checksum, so we undo it
3604 * and then put the value in host order for further stack use.
3606 csum
= ntohl(csum
^ 0xFFFF);
3608 skb
->ip_summed
= CHECKSUM_HW
;
3610 adapter
->hw_csum_good
++;
3614 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3615 * @adapter: board private structure
3619 #ifdef CONFIG_E1000_NAPI
3620 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3621 struct e1000_rx_ring
*rx_ring
,
3622 int *work_done
, int work_to_do
)
3624 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3625 struct e1000_rx_ring
*rx_ring
)
3628 struct net_device
*netdev
= adapter
->netdev
;
3629 struct pci_dev
*pdev
= adapter
->pdev
;
3630 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3631 struct e1000_buffer
*buffer_info
, *next_buffer
;
3632 unsigned long flags
;
3636 int cleaned_count
= 0;
3637 boolean_t cleaned
= FALSE
;
3639 i
= rx_ring
->next_to_clean
;
3640 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3641 buffer_info
= &rx_ring
->buffer_info
[i
];
3643 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3644 struct sk_buff
*skb
;
3646 #ifdef CONFIG_E1000_NAPI
3647 if (*work_done
>= work_to_do
)
3651 status
= rx_desc
->status
;
3652 skb
= buffer_info
->skb
;
3653 buffer_info
->skb
= NULL
;
3655 prefetch(skb
->data
- NET_IP_ALIGN
);
3657 if (++i
== rx_ring
->count
) i
= 0;
3658 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3661 next_buffer
= &rx_ring
->buffer_info
[i
];
3665 pci_unmap_single(pdev
,
3667 buffer_info
->length
,
3668 PCI_DMA_FROMDEVICE
);
3670 length
= le16_to_cpu(rx_desc
->length
);
3672 /* adjust length to remove Ethernet CRC */
3675 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3676 /* All receives must fit into a single buffer */
3677 E1000_DBG("%s: Receive packet consumed multiple"
3678 " buffers\n", netdev
->name
);
3680 buffer_info
-> skb
= skb
;
3684 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3685 last_byte
= *(skb
->data
+ length
- 1);
3686 if (TBI_ACCEPT(&adapter
->hw
, status
,
3687 rx_desc
->errors
, length
, last_byte
)) {
3688 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3689 e1000_tbi_adjust_stats(&adapter
->hw
,
3692 spin_unlock_irqrestore(&adapter
->stats_lock
,
3697 buffer_info
->skb
= skb
;
3702 /* code added for copybreak, this should improve
3703 * performance for small packets with large amounts
3704 * of reassembly being done in the stack */
3705 #define E1000_CB_LENGTH 256
3706 if (length
< E1000_CB_LENGTH
) {
3707 struct sk_buff
*new_skb
=
3708 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
3710 skb_reserve(new_skb
, NET_IP_ALIGN
);
3711 new_skb
->dev
= netdev
;
3712 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3713 skb
->data
- NET_IP_ALIGN
,
3714 length
+ NET_IP_ALIGN
);
3715 /* save the skb in buffer_info as good */
3716 buffer_info
->skb
= skb
;
3718 skb_put(skb
, length
);
3721 skb_put(skb
, length
);
3723 /* end copybreak code */
3725 /* Receive Checksum Offload */
3726 e1000_rx_checksum(adapter
,
3727 (uint32_t)(status
) |
3728 ((uint32_t)(rx_desc
->errors
) << 24),
3729 le16_to_cpu(rx_desc
->csum
), skb
);
3731 skb
->protocol
= eth_type_trans(skb
, netdev
);
3732 #ifdef CONFIG_E1000_NAPI
3733 if (unlikely(adapter
->vlgrp
&&
3734 (status
& E1000_RXD_STAT_VP
))) {
3735 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3736 le16_to_cpu(rx_desc
->special
) &
3737 E1000_RXD_SPC_VLAN_MASK
);
3739 netif_receive_skb(skb
);
3741 #else /* CONFIG_E1000_NAPI */
3742 if (unlikely(adapter
->vlgrp
&&
3743 (status
& E1000_RXD_STAT_VP
))) {
3744 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3745 le16_to_cpu(rx_desc
->special
) &
3746 E1000_RXD_SPC_VLAN_MASK
);
3750 #endif /* CONFIG_E1000_NAPI */
3751 netdev
->last_rx
= jiffies
;
3754 rx_desc
->status
= 0;
3756 /* return some buffers to hardware, one at a time is too slow */
3757 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3758 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3762 /* use prefetched values */
3764 buffer_info
= next_buffer
;
3766 rx_ring
->next_to_clean
= i
;
3768 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3770 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3776 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3777 * @adapter: board private structure
3781 #ifdef CONFIG_E1000_NAPI
3782 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3783 struct e1000_rx_ring
*rx_ring
,
3784 int *work_done
, int work_to_do
)
3786 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3787 struct e1000_rx_ring
*rx_ring
)
3790 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3791 struct net_device
*netdev
= adapter
->netdev
;
3792 struct pci_dev
*pdev
= adapter
->pdev
;
3793 struct e1000_buffer
*buffer_info
, *next_buffer
;
3794 struct e1000_ps_page
*ps_page
;
3795 struct e1000_ps_page_dma
*ps_page_dma
;
3796 struct sk_buff
*skb
;
3798 uint32_t length
, staterr
;
3799 int cleaned_count
= 0;
3800 boolean_t cleaned
= FALSE
;
3802 i
= rx_ring
->next_to_clean
;
3803 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3804 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3805 buffer_info
= &rx_ring
->buffer_info
[i
];
3807 while (staterr
& E1000_RXD_STAT_DD
) {
3808 ps_page
= &rx_ring
->ps_page
[i
];
3809 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3810 #ifdef CONFIG_E1000_NAPI
3811 if (unlikely(*work_done
>= work_to_do
))
3815 skb
= buffer_info
->skb
;
3817 /* in the packet split case this is header only */
3818 prefetch(skb
->data
- NET_IP_ALIGN
);
3820 if (++i
== rx_ring
->count
) i
= 0;
3821 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3824 next_buffer
= &rx_ring
->buffer_info
[i
];
3828 pci_unmap_single(pdev
, buffer_info
->dma
,
3829 buffer_info
->length
,
3830 PCI_DMA_FROMDEVICE
);
3832 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3833 E1000_DBG("%s: Packet Split buffers didn't pick up"
3834 " the full packet\n", netdev
->name
);
3835 dev_kfree_skb_irq(skb
);
3839 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3840 dev_kfree_skb_irq(skb
);
3844 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3846 if (unlikely(!length
)) {
3847 E1000_DBG("%s: Last part of the packet spanning"
3848 " multiple descriptors\n", netdev
->name
);
3849 dev_kfree_skb_irq(skb
);
3854 skb_put(skb
, length
);
3857 /* this looks ugly, but it seems compiler issues make it
3858 more efficient than reusing j */
3859 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3861 /* page alloc/put takes too long and effects small packet
3862 * throughput, so unsplit small packets and save the alloc/put*/
3863 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3865 /* there is no documentation about how to call
3866 * kmap_atomic, so we can't hold the mapping
3868 pci_dma_sync_single_for_cpu(pdev
,
3869 ps_page_dma
->ps_page_dma
[0],
3871 PCI_DMA_FROMDEVICE
);
3872 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3873 KM_SKB_DATA_SOFTIRQ
);
3874 memcpy(skb
->tail
, vaddr
, l1
);
3875 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3876 pci_dma_sync_single_for_device(pdev
,
3877 ps_page_dma
->ps_page_dma
[0],
3878 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3879 /* remove the CRC */
3886 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3887 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3889 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3890 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3891 ps_page_dma
->ps_page_dma
[j
] = 0;
3892 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3894 ps_page
->ps_page
[j
] = NULL
;
3896 skb
->data_len
+= length
;
3897 skb
->truesize
+= length
;
3900 /* strip the ethernet crc, problem is we're using pages now so
3901 * this whole operation can get a little cpu intensive */
3902 pskb_trim(skb
, skb
->len
- 4);
3905 e1000_rx_checksum(adapter
, staterr
,
3906 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
3907 skb
->protocol
= eth_type_trans(skb
, netdev
);
3909 if (likely(rx_desc
->wb
.upper
.header_status
&
3910 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
3911 adapter
->rx_hdr_split
++;
3912 #ifdef CONFIG_E1000_NAPI
3913 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3914 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3915 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3916 E1000_RXD_SPC_VLAN_MASK
);
3918 netif_receive_skb(skb
);
3920 #else /* CONFIG_E1000_NAPI */
3921 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3922 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3923 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3924 E1000_RXD_SPC_VLAN_MASK
);
3928 #endif /* CONFIG_E1000_NAPI */
3929 netdev
->last_rx
= jiffies
;
3932 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
3933 buffer_info
->skb
= NULL
;
3935 /* return some buffers to hardware, one at a time is too slow */
3936 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3937 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3941 /* use prefetched values */
3943 buffer_info
= next_buffer
;
3945 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3947 rx_ring
->next_to_clean
= i
;
3949 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3951 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3957 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3958 * @adapter: address of board private structure
3962 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3963 struct e1000_rx_ring
*rx_ring
,
3966 struct net_device
*netdev
= adapter
->netdev
;
3967 struct pci_dev
*pdev
= adapter
->pdev
;
3968 struct e1000_rx_desc
*rx_desc
;
3969 struct e1000_buffer
*buffer_info
;
3970 struct sk_buff
*skb
;
3972 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3974 i
= rx_ring
->next_to_use
;
3975 buffer_info
= &rx_ring
->buffer_info
[i
];
3977 while (cleaned_count
--) {
3978 if (!(skb
= buffer_info
->skb
))
3979 skb
= netdev_alloc_skb(netdev
, bufsz
);
3985 if (unlikely(!skb
)) {
3986 /* Better luck next round */
3987 adapter
->alloc_rx_buff_failed
++;
3991 /* Fix for errata 23, can't cross 64kB boundary */
3992 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3993 struct sk_buff
*oldskb
= skb
;
3994 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3995 "at %p\n", bufsz
, skb
->data
);
3996 /* Try again, without freeing the previous */
3997 skb
= netdev_alloc_skb(netdev
, bufsz
);
3998 /* Failed allocation, critical failure */
4000 dev_kfree_skb(oldskb
);
4004 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4007 dev_kfree_skb(oldskb
);
4008 break; /* while !buffer_info->skb */
4010 /* Use new allocation */
4011 dev_kfree_skb(oldskb
);
4014 /* Make buffer alignment 2 beyond a 16 byte boundary
4015 * this will result in a 16 byte aligned IP header after
4016 * the 14 byte MAC header is removed
4018 skb_reserve(skb
, NET_IP_ALIGN
);
4022 buffer_info
->skb
= skb
;
4023 buffer_info
->length
= adapter
->rx_buffer_len
;
4025 buffer_info
->dma
= pci_map_single(pdev
,
4027 adapter
->rx_buffer_len
,
4028 PCI_DMA_FROMDEVICE
);
4030 /* Fix for errata 23, can't cross 64kB boundary */
4031 if (!e1000_check_64k_bound(adapter
,
4032 (void *)(unsigned long)buffer_info
->dma
,
4033 adapter
->rx_buffer_len
)) {
4034 DPRINTK(RX_ERR
, ERR
,
4035 "dma align check failed: %u bytes at %p\n",
4036 adapter
->rx_buffer_len
,
4037 (void *)(unsigned long)buffer_info
->dma
);
4039 buffer_info
->skb
= NULL
;
4041 pci_unmap_single(pdev
, buffer_info
->dma
,
4042 adapter
->rx_buffer_len
,
4043 PCI_DMA_FROMDEVICE
);
4045 break; /* while !buffer_info->skb */
4047 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4048 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4050 if (unlikely(++i
== rx_ring
->count
))
4052 buffer_info
= &rx_ring
->buffer_info
[i
];
4055 if (likely(rx_ring
->next_to_use
!= i
)) {
4056 rx_ring
->next_to_use
= i
;
4057 if (unlikely(i
-- == 0))
4058 i
= (rx_ring
->count
- 1);
4060 /* Force memory writes to complete before letting h/w
4061 * know there are new descriptors to fetch. (Only
4062 * applicable for weak-ordered memory model archs,
4063 * such as IA-64). */
4065 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4070 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4071 * @adapter: address of board private structure
4075 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4076 struct e1000_rx_ring
*rx_ring
,
4079 struct net_device
*netdev
= adapter
->netdev
;
4080 struct pci_dev
*pdev
= adapter
->pdev
;
4081 union e1000_rx_desc_packet_split
*rx_desc
;
4082 struct e1000_buffer
*buffer_info
;
4083 struct e1000_ps_page
*ps_page
;
4084 struct e1000_ps_page_dma
*ps_page_dma
;
4085 struct sk_buff
*skb
;
4088 i
= rx_ring
->next_to_use
;
4089 buffer_info
= &rx_ring
->buffer_info
[i
];
4090 ps_page
= &rx_ring
->ps_page
[i
];
4091 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4093 while (cleaned_count
--) {
4094 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4096 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4097 if (j
< adapter
->rx_ps_pages
) {
4098 if (likely(!ps_page
->ps_page
[j
])) {
4099 ps_page
->ps_page
[j
] =
4100 alloc_page(GFP_ATOMIC
);
4101 if (unlikely(!ps_page
->ps_page
[j
])) {
4102 adapter
->alloc_rx_buff_failed
++;
4105 ps_page_dma
->ps_page_dma
[j
] =
4107 ps_page
->ps_page
[j
],
4109 PCI_DMA_FROMDEVICE
);
4111 /* Refresh the desc even if buffer_addrs didn't
4112 * change because each write-back erases
4115 rx_desc
->read
.buffer_addr
[j
+1] =
4116 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4118 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4121 skb
= netdev_alloc_skb(netdev
,
4122 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4124 if (unlikely(!skb
)) {
4125 adapter
->alloc_rx_buff_failed
++;
4129 /* Make buffer alignment 2 beyond a 16 byte boundary
4130 * this will result in a 16 byte aligned IP header after
4131 * the 14 byte MAC header is removed
4133 skb_reserve(skb
, NET_IP_ALIGN
);
4137 buffer_info
->skb
= skb
;
4138 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4139 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4140 adapter
->rx_ps_bsize0
,
4141 PCI_DMA_FROMDEVICE
);
4143 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4145 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4146 buffer_info
= &rx_ring
->buffer_info
[i
];
4147 ps_page
= &rx_ring
->ps_page
[i
];
4148 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4152 if (likely(rx_ring
->next_to_use
!= i
)) {
4153 rx_ring
->next_to_use
= i
;
4154 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4156 /* Force memory writes to complete before letting h/w
4157 * know there are new descriptors to fetch. (Only
4158 * applicable for weak-ordered memory model archs,
4159 * such as IA-64). */
4161 /* Hardware increments by 16 bytes, but packet split
4162 * descriptors are 32 bytes...so we increment tail
4165 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4170 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4175 e1000_smartspeed(struct e1000_adapter
*adapter
)
4177 uint16_t phy_status
;
4180 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4181 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4184 if (adapter
->smartspeed
== 0) {
4185 /* If Master/Slave config fault is asserted twice,
4186 * we assume back-to-back */
4187 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4188 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4189 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4190 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4191 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4192 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4193 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4194 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4196 adapter
->smartspeed
++;
4197 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4198 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4200 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4201 MII_CR_RESTART_AUTO_NEG
);
4202 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4207 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4208 /* If still no link, perhaps using 2/3 pair cable */
4209 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4210 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4211 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4212 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4213 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4214 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4215 MII_CR_RESTART_AUTO_NEG
);
4216 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4219 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4220 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4221 adapter
->smartspeed
= 0;
4232 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4238 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4252 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4254 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4255 struct mii_ioctl_data
*data
= if_mii(ifr
);
4259 unsigned long flags
;
4261 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4266 data
->phy_id
= adapter
->hw
.phy_addr
;
4269 if (!capable(CAP_NET_ADMIN
))
4271 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4272 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4274 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4277 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4280 if (!capable(CAP_NET_ADMIN
))
4282 if (data
->reg_num
& ~(0x1F))
4284 mii_reg
= data
->val_in
;
4285 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4286 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4288 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4291 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4292 switch (data
->reg_num
) {
4294 if (mii_reg
& MII_CR_POWER_DOWN
)
4296 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4297 adapter
->hw
.autoneg
= 1;
4298 adapter
->hw
.autoneg_advertised
= 0x2F;
4301 spddplx
= SPEED_1000
;
4302 else if (mii_reg
& 0x2000)
4303 spddplx
= SPEED_100
;
4306 spddplx
+= (mii_reg
& 0x100)
4309 retval
= e1000_set_spd_dplx(adapter
,
4312 spin_unlock_irqrestore(
4313 &adapter
->stats_lock
,
4318 if (netif_running(adapter
->netdev
))
4319 e1000_reinit_locked(adapter
);
4321 e1000_reset(adapter
);
4323 case M88E1000_PHY_SPEC_CTRL
:
4324 case M88E1000_EXT_PHY_SPEC_CTRL
:
4325 if (e1000_phy_reset(&adapter
->hw
)) {
4326 spin_unlock_irqrestore(
4327 &adapter
->stats_lock
, flags
);
4333 switch (data
->reg_num
) {
4335 if (mii_reg
& MII_CR_POWER_DOWN
)
4337 if (netif_running(adapter
->netdev
))
4338 e1000_reinit_locked(adapter
);
4340 e1000_reset(adapter
);
4344 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4349 return E1000_SUCCESS
;
4353 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4355 struct e1000_adapter
*adapter
= hw
->back
;
4356 int ret_val
= pci_set_mwi(adapter
->pdev
);
4359 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4363 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4365 struct e1000_adapter
*adapter
= hw
->back
;
4367 pci_clear_mwi(adapter
->pdev
);
4371 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4373 struct e1000_adapter
*adapter
= hw
->back
;
4375 pci_read_config_word(adapter
->pdev
, reg
, value
);
4379 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4381 struct e1000_adapter
*adapter
= hw
->back
;
4383 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4388 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4395 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4401 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4403 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4404 uint32_t ctrl
, rctl
;
4406 e1000_irq_disable(adapter
);
4407 adapter
->vlgrp
= grp
;
4410 /* enable VLAN tag insert/strip */
4411 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4412 ctrl
|= E1000_CTRL_VME
;
4413 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4415 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4416 /* enable VLAN receive filtering */
4417 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4418 rctl
|= E1000_RCTL_VFE
;
4419 rctl
&= ~E1000_RCTL_CFIEN
;
4420 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4421 e1000_update_mng_vlan(adapter
);
4424 /* disable VLAN tag insert/strip */
4425 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4426 ctrl
&= ~E1000_CTRL_VME
;
4427 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4429 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4430 /* disable VLAN filtering */
4431 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4432 rctl
&= ~E1000_RCTL_VFE
;
4433 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4434 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4435 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4436 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4441 e1000_irq_enable(adapter
);
4445 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4447 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4448 uint32_t vfta
, index
;
4450 if ((adapter
->hw
.mng_cookie
.status
&
4451 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4452 (vid
== adapter
->mng_vlan_id
))
4454 /* add VID to filter table */
4455 index
= (vid
>> 5) & 0x7F;
4456 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4457 vfta
|= (1 << (vid
& 0x1F));
4458 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4462 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4464 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4465 uint32_t vfta
, index
;
4467 e1000_irq_disable(adapter
);
4470 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4472 e1000_irq_enable(adapter
);
4474 if ((adapter
->hw
.mng_cookie
.status
&
4475 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4476 (vid
== adapter
->mng_vlan_id
)) {
4477 /* release control to f/w */
4478 e1000_release_hw_control(adapter
);
4482 /* remove VID from filter table */
4483 index
= (vid
>> 5) & 0x7F;
4484 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4485 vfta
&= ~(1 << (vid
& 0x1F));
4486 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4490 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4492 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4494 if (adapter
->vlgrp
) {
4496 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4497 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4499 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4505 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4507 adapter
->hw
.autoneg
= 0;
4509 /* Fiber NICs only allow 1000 gbps Full duplex */
4510 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4511 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4512 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4517 case SPEED_10
+ DUPLEX_HALF
:
4518 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4520 case SPEED_10
+ DUPLEX_FULL
:
4521 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4523 case SPEED_100
+ DUPLEX_HALF
:
4524 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4526 case SPEED_100
+ DUPLEX_FULL
:
4527 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4529 case SPEED_1000
+ DUPLEX_FULL
:
4530 adapter
->hw
.autoneg
= 1;
4531 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4533 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4535 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4542 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4543 * bus we're on (PCI(X) vs. PCI-E)
4545 #define PCIE_CONFIG_SPACE_LEN 256
4546 #define PCI_CONFIG_SPACE_LEN 64
4548 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4550 struct pci_dev
*dev
= adapter
->pdev
;
4554 if (adapter
->hw
.mac_type
>= e1000_82571
)
4555 size
= PCIE_CONFIG_SPACE_LEN
;
4557 size
= PCI_CONFIG_SPACE_LEN
;
4559 WARN_ON(adapter
->config_space
!= NULL
);
4561 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4562 if (!adapter
->config_space
) {
4563 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4566 for (i
= 0; i
< (size
/ 4); i
++)
4567 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4572 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4574 struct pci_dev
*dev
= adapter
->pdev
;
4578 if (adapter
->config_space
== NULL
)
4581 if (adapter
->hw
.mac_type
>= e1000_82571
)
4582 size
= PCIE_CONFIG_SPACE_LEN
;
4584 size
= PCI_CONFIG_SPACE_LEN
;
4585 for (i
= 0; i
< (size
/ 4); i
++)
4586 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4587 kfree(adapter
->config_space
);
4588 adapter
->config_space
= NULL
;
4591 #endif /* CONFIG_PM */
4594 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4596 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4597 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4598 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4599 uint32_t wufc
= adapter
->wol
;
4604 netif_device_detach(netdev
);
4606 if (netif_running(netdev
)) {
4607 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4608 e1000_down(adapter
);
4612 /* Implement our own version of pci_save_state(pdev) because pci-
4613 * express adapters have 256-byte config spaces. */
4614 retval
= e1000_pci_save_state(adapter
);
4619 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4620 if (status
& E1000_STATUS_LU
)
4621 wufc
&= ~E1000_WUFC_LNKC
;
4624 e1000_setup_rctl(adapter
);
4625 e1000_set_multi(netdev
);
4627 /* turn on all-multi mode if wake on multicast is enabled */
4628 if (adapter
->wol
& E1000_WUFC_MC
) {
4629 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4630 rctl
|= E1000_RCTL_MPE
;
4631 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4634 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4635 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4636 /* advertise wake from D3Cold */
4637 #define E1000_CTRL_ADVD3WUC 0x00100000
4638 /* phy power management enable */
4639 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4640 ctrl
|= E1000_CTRL_ADVD3WUC
|
4641 E1000_CTRL_EN_PHY_PWR_MGMT
;
4642 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4645 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4646 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4647 /* keep the laser running in D3 */
4648 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4649 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4650 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4653 /* Allow time for pending master requests to run */
4654 e1000_disable_pciex_master(&adapter
->hw
);
4656 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4657 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4658 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4659 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4661 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4662 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4663 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4664 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4667 /* FIXME: this code is incorrect for PCI Express */
4668 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4669 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
4670 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4671 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4672 if (manc
& E1000_MANC_SMBUS_EN
) {
4673 manc
|= E1000_MANC_ARP_EN
;
4674 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4675 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4676 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4680 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
4681 e1000_phy_powerdown_workaround(&adapter
->hw
);
4683 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4684 * would have already happened in close and is redundant. */
4685 e1000_release_hw_control(adapter
);
4687 pci_disable_device(pdev
);
4689 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4696 e1000_resume(struct pci_dev
*pdev
)
4698 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4699 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4700 uint32_t manc
, ret_val
;
4702 pci_set_power_state(pdev
, PCI_D0
);
4703 e1000_pci_restore_state(adapter
);
4704 ret_val
= pci_enable_device(pdev
);
4705 pci_set_master(pdev
);
4707 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4708 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4710 e1000_reset(adapter
);
4711 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4713 if (netif_running(netdev
))
4716 netif_device_attach(netdev
);
4718 /* FIXME: this code is incorrect for PCI Express */
4719 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4720 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
4721 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4722 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4723 manc
&= ~(E1000_MANC_ARP_EN
);
4724 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4727 /* If the controller is 82573 and f/w is AMT, do not set
4728 * DRV_LOAD until the interface is up. For all other cases,
4729 * let the f/w know that the h/w is now under the control
4731 if (adapter
->hw
.mac_type
!= e1000_82573
||
4732 !e1000_check_mng_mode(&adapter
->hw
))
4733 e1000_get_hw_control(adapter
);
4739 static void e1000_shutdown(struct pci_dev
*pdev
)
4741 e1000_suspend(pdev
, PMSG_SUSPEND
);
4744 #ifdef CONFIG_NET_POLL_CONTROLLER
4746 * Polling 'interrupt' - used by things like netconsole to send skbs
4747 * without having to re-enable interrupts. It's not called while
4748 * the interrupt routine is executing.
4751 e1000_netpoll(struct net_device
*netdev
)
4753 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4755 disable_irq(adapter
->pdev
->irq
);
4756 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4757 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4758 #ifndef CONFIG_E1000_NAPI
4759 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4761 enable_irq(adapter
->pdev
->irq
);
4766 * e1000_io_error_detected - called when PCI error is detected
4767 * @pdev: Pointer to PCI device
4768 * @state: The current pci conneection state
4770 * This function is called after a PCI bus error affecting
4771 * this device has been detected.
4773 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4775 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4776 struct e1000_adapter
*adapter
= netdev
->priv
;
4778 netif_device_detach(netdev
);
4780 if (netif_running(netdev
))
4781 e1000_down(adapter
);
4783 /* Request a slot slot reset. */
4784 return PCI_ERS_RESULT_NEED_RESET
;
4788 * e1000_io_slot_reset - called after the pci bus has been reset.
4789 * @pdev: Pointer to PCI device
4791 * Restart the card from scratch, as if from a cold-boot. Implementation
4792 * resembles the first-half of the e1000_resume routine.
4794 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4796 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4797 struct e1000_adapter
*adapter
= netdev
->priv
;
4799 if (pci_enable_device(pdev
)) {
4800 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4801 return PCI_ERS_RESULT_DISCONNECT
;
4803 pci_set_master(pdev
);
4805 pci_enable_wake(pdev
, 3, 0);
4806 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4808 /* Perform card reset only on one instance of the card */
4809 if (PCI_FUNC (pdev
->devfn
) != 0)
4810 return PCI_ERS_RESULT_RECOVERED
;
4812 e1000_reset(adapter
);
4813 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4815 return PCI_ERS_RESULT_RECOVERED
;
4819 * e1000_io_resume - called when traffic can start flowing again.
4820 * @pdev: Pointer to PCI device
4822 * This callback is called when the error recovery driver tells us that
4823 * its OK to resume normal operation. Implementation resembles the
4824 * second-half of the e1000_resume routine.
4826 static void e1000_io_resume(struct pci_dev
*pdev
)
4828 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4829 struct e1000_adapter
*adapter
= netdev
->priv
;
4830 uint32_t manc
, swsm
;
4832 if (netif_running(netdev
)) {
4833 if (e1000_up(adapter
)) {
4834 printk("e1000: can't bring device back up after reset\n");
4839 netif_device_attach(netdev
);
4841 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4842 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4843 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4844 manc
&= ~(E1000_MANC_ARP_EN
);
4845 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4848 switch (adapter
->hw
.mac_type
) {
4850 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4851 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4852 swsm
| E1000_SWSM_DRV_LOAD
);
4858 if (netif_running(netdev
))
4859 mod_timer(&adapter
->watchdog_timer
, jiffies
);