1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
31 char e1000_driver_name
[] = "e1000";
32 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
33 #ifndef CONFIG_E1000_NAPI
36 #define DRIVERNAPI "-NAPI"
38 #define DRV_VERSION "7.2.9-k4"DRIVERNAPI
39 char e1000_driver_version
[] = DRV_VERSION
;
40 static char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
42 /* e1000_pci_tbl - PCI Device ID Table
44 * Last entry must be all 0s
47 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
49 static struct pci_device_id e1000_pci_tbl
[] = {
50 INTEL_E1000_ETHERNET_DEVICE(0x1000),
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(0x10A4),
102 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
104 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
106 /* required last entry */
110 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
112 int e1000_up(struct e1000_adapter
*adapter
);
113 void e1000_down(struct e1000_adapter
*adapter
);
114 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
115 void e1000_reset(struct e1000_adapter
*adapter
);
116 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
117 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
118 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
119 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
120 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
121 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
122 struct e1000_tx_ring
*txdr
);
123 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
124 struct e1000_rx_ring
*rxdr
);
125 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
126 struct e1000_tx_ring
*tx_ring
);
127 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
128 struct e1000_rx_ring
*rx_ring
);
129 void e1000_update_stats(struct e1000_adapter
*adapter
);
131 static int e1000_init_module(void);
132 static void e1000_exit_module(void);
133 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
134 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
135 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
136 static int e1000_sw_init(struct e1000_adapter
*adapter
);
137 static int e1000_open(struct net_device
*netdev
);
138 static int e1000_close(struct net_device
*netdev
);
139 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
140 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
141 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
142 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
143 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
144 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
145 struct e1000_tx_ring
*tx_ring
);
146 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
147 struct e1000_rx_ring
*rx_ring
);
148 static void e1000_set_multi(struct net_device
*netdev
);
149 static void e1000_update_phy_info(unsigned long data
);
150 static void e1000_watchdog(unsigned long data
);
151 static void e1000_82547_tx_fifo_stall(unsigned long data
);
152 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
153 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
154 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
155 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
156 static irqreturn_t
e1000_intr(int irq
, void *data
);
157 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
158 struct e1000_tx_ring
*tx_ring
);
159 #ifdef CONFIG_E1000_NAPI
160 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
161 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
162 struct e1000_rx_ring
*rx_ring
,
163 int *work_done
, int work_to_do
);
164 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
165 struct e1000_rx_ring
*rx_ring
,
166 int *work_done
, int work_to_do
);
168 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
);
170 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
171 struct e1000_rx_ring
*rx_ring
);
173 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
174 struct e1000_rx_ring
*rx_ring
,
176 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
177 struct e1000_rx_ring
*rx_ring
,
179 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
180 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
182 void e1000_set_ethtool_ops(struct net_device
*netdev
);
183 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
184 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
185 static void e1000_tx_timeout(struct net_device
*dev
);
186 static void e1000_reset_task(struct net_device
*dev
);
187 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
188 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
189 struct sk_buff
*skb
);
191 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
192 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
193 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
194 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
196 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
198 static int e1000_resume(struct pci_dev
*pdev
);
200 static void e1000_shutdown(struct pci_dev
*pdev
);
202 #ifdef CONFIG_NET_POLL_CONTROLLER
203 /* for netdump / net console */
204 static void e1000_netpoll (struct net_device
*netdev
);
207 extern void e1000_check_options(struct e1000_adapter
*adapter
);
209 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
210 pci_channel_state_t state
);
211 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
212 static void e1000_io_resume(struct pci_dev
*pdev
);
214 static struct pci_error_handlers e1000_err_handler
= {
215 .error_detected
= e1000_io_error_detected
,
216 .slot_reset
= e1000_io_slot_reset
,
217 .resume
= e1000_io_resume
,
220 static struct pci_driver e1000_driver
= {
221 .name
= e1000_driver_name
,
222 .id_table
= e1000_pci_tbl
,
223 .probe
= e1000_probe
,
224 .remove
= __devexit_p(e1000_remove
),
226 /* Power Managment Hooks */
227 .suspend
= e1000_suspend
,
228 .resume
= e1000_resume
,
230 .shutdown
= e1000_shutdown
,
231 .err_handler
= &e1000_err_handler
234 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
235 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
236 MODULE_LICENSE("GPL");
237 MODULE_VERSION(DRV_VERSION
);
239 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
240 module_param(debug
, int, 0);
241 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
244 * e1000_init_module - Driver Registration Routine
246 * e1000_init_module is the first routine called when the driver is
247 * loaded. All it does is register with the PCI subsystem.
251 e1000_init_module(void)
254 printk(KERN_INFO
"%s - version %s\n",
255 e1000_driver_string
, e1000_driver_version
);
257 printk(KERN_INFO
"%s\n", e1000_copyright
);
259 ret
= pci_register_driver(&e1000_driver
);
264 module_init(e1000_init_module
);
267 * e1000_exit_module - Driver Exit Cleanup Routine
269 * e1000_exit_module is called just before the driver is removed
274 e1000_exit_module(void)
276 pci_unregister_driver(&e1000_driver
);
279 module_exit(e1000_exit_module
);
281 static int e1000_request_irq(struct e1000_adapter
*adapter
)
283 struct net_device
*netdev
= adapter
->netdev
;
287 #ifdef CONFIG_PCI_MSI
288 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
289 adapter
->have_msi
= TRUE
;
290 if ((err
= pci_enable_msi(adapter
->pdev
))) {
292 "Unable to allocate MSI interrupt Error: %d\n", err
);
293 adapter
->have_msi
= FALSE
;
296 if (adapter
->have_msi
)
297 flags
&= ~IRQF_SHARED
;
299 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
300 netdev
->name
, netdev
)))
302 "Unable to allocate interrupt Error: %d\n", err
);
307 static void e1000_free_irq(struct e1000_adapter
*adapter
)
309 struct net_device
*netdev
= adapter
->netdev
;
311 free_irq(adapter
->pdev
->irq
, netdev
);
313 #ifdef CONFIG_PCI_MSI
314 if (adapter
->have_msi
)
315 pci_disable_msi(adapter
->pdev
);
320 * e1000_irq_disable - Mask off interrupt generation on the NIC
321 * @adapter: board private structure
325 e1000_irq_disable(struct e1000_adapter
*adapter
)
327 atomic_inc(&adapter
->irq_sem
);
328 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
329 E1000_WRITE_FLUSH(&adapter
->hw
);
330 synchronize_irq(adapter
->pdev
->irq
);
334 * e1000_irq_enable - Enable default interrupt generation settings
335 * @adapter: board private structure
339 e1000_irq_enable(struct e1000_adapter
*adapter
)
341 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
342 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
343 E1000_WRITE_FLUSH(&adapter
->hw
);
348 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
350 struct net_device
*netdev
= adapter
->netdev
;
351 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
352 uint16_t old_vid
= adapter
->mng_vlan_id
;
353 if (adapter
->vlgrp
) {
354 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
355 if (adapter
->hw
.mng_cookie
.status
&
356 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
357 e1000_vlan_rx_add_vid(netdev
, vid
);
358 adapter
->mng_vlan_id
= vid
;
360 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
362 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
364 !adapter
->vlgrp
->vlan_devices
[old_vid
])
365 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
367 adapter
->mng_vlan_id
= vid
;
372 * e1000_release_hw_control - release control of the h/w to f/w
373 * @adapter: address of board private structure
375 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
376 * For ASF and Pass Through versions of f/w this means that the
377 * driver is no longer loaded. For AMT version (only with 82573) i
378 * of the f/w this means that the network i/f is closed.
383 e1000_release_hw_control(struct e1000_adapter
*adapter
)
389 /* Let firmware taken over control of h/w */
390 switch (adapter
->hw
.mac_type
) {
393 case e1000_80003es2lan
:
394 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
395 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
396 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
399 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
400 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
401 swsm
& ~E1000_SWSM_DRV_LOAD
);
403 extcnf
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
404 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
405 extcnf
& ~E1000_CTRL_EXT_DRV_LOAD
);
413 * e1000_get_hw_control - get control of the h/w from f/w
414 * @adapter: address of board private structure
416 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
417 * For ASF and Pass Through versions of f/w this means that
418 * the driver is loaded. For AMT version (only with 82573)
419 * of the f/w this means that the network i/f is open.
424 e1000_get_hw_control(struct e1000_adapter
*adapter
)
430 /* Let firmware know the driver has taken over */
431 switch (adapter
->hw
.mac_type
) {
434 case e1000_80003es2lan
:
435 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
436 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
437 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
440 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
441 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
442 swsm
| E1000_SWSM_DRV_LOAD
);
445 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
446 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
447 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
455 e1000_up(struct e1000_adapter
*adapter
)
457 struct net_device
*netdev
= adapter
->netdev
;
460 /* hardware has been reset, we need to reload some things */
462 e1000_set_multi(netdev
);
464 e1000_restore_vlan(adapter
);
466 e1000_configure_tx(adapter
);
467 e1000_setup_rctl(adapter
);
468 e1000_configure_rx(adapter
);
469 /* call E1000_DESC_UNUSED which always leaves
470 * at least 1 descriptor unused to make sure
471 * next_to_use != next_to_clean */
472 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
473 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
474 adapter
->alloc_rx_buf(adapter
, ring
,
475 E1000_DESC_UNUSED(ring
));
478 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
480 #ifdef CONFIG_E1000_NAPI
481 netif_poll_enable(netdev
);
483 e1000_irq_enable(adapter
);
485 clear_bit(__E1000_DOWN
, &adapter
->flags
);
487 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
492 * e1000_power_up_phy - restore link in case the phy was powered down
493 * @adapter: address of board private structure
495 * The phy may be powered down to save power and turn off link when the
496 * driver is unloaded and wake on lan is not enabled (among others)
497 * *** this routine MUST be followed by a call to e1000_reset ***
501 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
503 uint16_t mii_reg
= 0;
505 /* Just clear the power down bit to wake the phy back up */
506 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
507 /* according to the manual, the phy will retain its
508 * settings across a power-down/up cycle */
509 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
510 mii_reg
&= ~MII_CR_POWER_DOWN
;
511 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
515 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
517 /* Power down the PHY so no link is implied when interface is down *
518 * The PHY cannot be powered down if any of the following is TRUE *
521 * (c) SoL/IDER session is active */
522 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
523 adapter
->hw
.media_type
== e1000_media_type_copper
) {
524 uint16_t mii_reg
= 0;
526 switch (adapter
->hw
.mac_type
) {
529 case e1000_82545_rev_3
:
531 case e1000_82546_rev_3
:
533 case e1000_82541_rev_2
:
535 case e1000_82547_rev_2
:
536 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
543 case e1000_80003es2lan
:
545 if (e1000_check_mng_mode(&adapter
->hw
) ||
546 e1000_check_phy_reset_block(&adapter
->hw
))
552 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
553 mii_reg
|= MII_CR_POWER_DOWN
;
554 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
562 e1000_down(struct e1000_adapter
*adapter
)
564 struct net_device
*netdev
= adapter
->netdev
;
566 /* signal that we're down so the interrupt handler does not
567 * reschedule our watchdog timer */
568 set_bit(__E1000_DOWN
, &adapter
->flags
);
570 e1000_irq_disable(adapter
);
572 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
573 del_timer_sync(&adapter
->watchdog_timer
);
574 del_timer_sync(&adapter
->phy_info_timer
);
576 #ifdef CONFIG_E1000_NAPI
577 netif_poll_disable(netdev
);
579 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
580 adapter
->link_speed
= 0;
581 adapter
->link_duplex
= 0;
582 netif_carrier_off(netdev
);
583 netif_stop_queue(netdev
);
585 e1000_reset(adapter
);
586 e1000_clean_all_tx_rings(adapter
);
587 e1000_clean_all_rx_rings(adapter
);
591 e1000_reinit_locked(struct e1000_adapter
*adapter
)
593 WARN_ON(in_interrupt());
594 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
598 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
602 e1000_reset(struct e1000_adapter
*adapter
)
608 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
610 /* Repartition Pba for greater than 9k mtu
611 * To take effect CTRL.RST is required.
614 switch (adapter
->hw
.mac_type
) {
616 case e1000_82547_rev_2
:
621 case e1000_80003es2lan
:
635 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
636 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
637 pba
-= 8; /* allocate more FIFO for Tx */
640 if (adapter
->hw
.mac_type
== e1000_82547
) {
641 adapter
->tx_fifo_head
= 0;
642 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
643 adapter
->tx_fifo_size
=
644 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
645 atomic_set(&adapter
->tx_fifo_stall
, 0);
648 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
650 /* flow control settings */
651 /* Set the FC high water mark to 90% of the FIFO size.
652 * Required to clear last 3 LSB */
653 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
654 /* We can't use 90% on small FIFOs because the remainder
655 * would be less than 1 full frame. In this case, we size
656 * it to allow at least a full frame above the high water
658 if (pba
< E1000_PBA_16K
)
659 fc_high_water_mark
= (pba
* 1024) - 1600;
661 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
662 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
663 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
664 adapter
->hw
.fc_pause_time
= 0xFFFF;
666 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
667 adapter
->hw
.fc_send_xon
= 1;
668 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
670 /* Allow time for pending master requests to run */
671 e1000_reset_hw(&adapter
->hw
);
672 if (adapter
->hw
.mac_type
>= e1000_82544
)
673 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
675 /* disable Multiple Reads in Transmit Control Register for debugging */
676 tctl
= E1000_READ_REG(hw
, TCTL
);
677 E1000_WRITE_REG(hw
, TCTL
, tctl
& ~E1000_TCTL_MULR
);
680 if (e1000_init_hw(&adapter
->hw
))
681 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
682 e1000_update_mng_vlan(adapter
);
683 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
684 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
686 e1000_reset_adaptive(&adapter
->hw
);
687 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
689 if (!adapter
->smart_power_down
&&
690 (adapter
->hw
.mac_type
== e1000_82571
||
691 adapter
->hw
.mac_type
== e1000_82572
)) {
692 uint16_t phy_data
= 0;
693 /* speed up time to link by disabling smart power down, ignore
694 * the return value of this function because there is nothing
695 * different we would do if it failed */
696 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
698 phy_data
&= ~IGP02E1000_PM_SPD
;
699 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
703 if ((adapter
->en_mng_pt
) &&
704 (adapter
->hw
.mac_type
>= e1000_82540
) &&
705 (adapter
->hw
.mac_type
< e1000_82571
) &&
706 (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
707 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
708 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
709 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
714 * e1000_probe - Device Initialization Routine
715 * @pdev: PCI device information struct
716 * @ent: entry in e1000_pci_tbl
718 * Returns 0 on success, negative on failure
720 * e1000_probe initializes an adapter identified by a pci_dev structure.
721 * The OS initialization, configuring of the adapter private structure,
722 * and a hardware reset occur.
726 e1000_probe(struct pci_dev
*pdev
,
727 const struct pci_device_id
*ent
)
729 struct net_device
*netdev
;
730 struct e1000_adapter
*adapter
;
731 unsigned long mmio_start
, mmio_len
;
732 unsigned long flash_start
, flash_len
;
734 static int cards_found
= 0;
735 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
736 int i
, err
, pci_using_dac
;
737 uint16_t eeprom_data
= 0;
738 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
739 if ((err
= pci_enable_device(pdev
)))
742 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
743 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
746 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
747 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
748 E1000_ERR("No usable DMA configuration, aborting\n");
754 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
757 pci_set_master(pdev
);
760 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
762 goto err_alloc_etherdev
;
764 SET_MODULE_OWNER(netdev
);
765 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
767 pci_set_drvdata(pdev
, netdev
);
768 adapter
= netdev_priv(netdev
);
769 adapter
->netdev
= netdev
;
770 adapter
->pdev
= pdev
;
771 adapter
->hw
.back
= adapter
;
772 adapter
->msg_enable
= (1 << debug
) - 1;
774 mmio_start
= pci_resource_start(pdev
, BAR_0
);
775 mmio_len
= pci_resource_len(pdev
, BAR_0
);
778 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
779 if (!adapter
->hw
.hw_addr
)
782 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
783 if (pci_resource_len(pdev
, i
) == 0)
785 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
786 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
791 netdev
->open
= &e1000_open
;
792 netdev
->stop
= &e1000_close
;
793 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
794 netdev
->get_stats
= &e1000_get_stats
;
795 netdev
->set_multicast_list
= &e1000_set_multi
;
796 netdev
->set_mac_address
= &e1000_set_mac
;
797 netdev
->change_mtu
= &e1000_change_mtu
;
798 netdev
->do_ioctl
= &e1000_ioctl
;
799 e1000_set_ethtool_ops(netdev
);
800 netdev
->tx_timeout
= &e1000_tx_timeout
;
801 netdev
->watchdog_timeo
= 5 * HZ
;
802 #ifdef CONFIG_E1000_NAPI
803 netdev
->poll
= &e1000_clean
;
806 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
807 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
808 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
809 #ifdef CONFIG_NET_POLL_CONTROLLER
810 netdev
->poll_controller
= e1000_netpoll
;
812 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
814 netdev
->mem_start
= mmio_start
;
815 netdev
->mem_end
= mmio_start
+ mmio_len
;
816 netdev
->base_addr
= adapter
->hw
.io_base
;
818 adapter
->bd_number
= cards_found
;
820 /* setup the private structure */
822 if ((err
= e1000_sw_init(adapter
)))
826 /* Flash BAR mapping must happen after e1000_sw_init
827 * because it depends on mac_type */
828 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
829 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
830 flash_start
= pci_resource_start(pdev
, 1);
831 flash_len
= pci_resource_len(pdev
, 1);
832 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
833 if (!adapter
->hw
.flash_address
)
837 if (e1000_check_phy_reset_block(&adapter
->hw
))
838 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
840 if (adapter
->hw
.mac_type
>= e1000_82543
) {
841 netdev
->features
= NETIF_F_SG
|
845 NETIF_F_HW_VLAN_FILTER
;
846 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
847 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
851 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
852 (adapter
->hw
.mac_type
!= e1000_82547
))
853 netdev
->features
|= NETIF_F_TSO
;
855 #ifdef NETIF_F_TSO_IPV6
856 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
857 netdev
->features
|= NETIF_F_TSO_IPV6
;
861 netdev
->features
|= NETIF_F_HIGHDMA
;
863 netdev
->features
|= NETIF_F_LLTX
;
865 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
867 /* initialize eeprom parameters */
869 if (e1000_init_eeprom_params(&adapter
->hw
)) {
870 E1000_ERR("EEPROM initialization failed\n");
874 /* before reading the EEPROM, reset the controller to
875 * put the device in a known good starting state */
877 e1000_reset_hw(&adapter
->hw
);
879 /* make sure the EEPROM is good */
881 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
882 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
886 /* copy the MAC address out of the EEPROM */
888 if (e1000_read_mac_addr(&adapter
->hw
))
889 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
890 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
891 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
893 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
894 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
898 e1000_get_bus_info(&adapter
->hw
);
900 init_timer(&adapter
->tx_fifo_stall_timer
);
901 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
902 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
904 init_timer(&adapter
->watchdog_timer
);
905 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
906 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
908 init_timer(&adapter
->phy_info_timer
);
909 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
910 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
912 INIT_WORK(&adapter
->reset_task
,
913 (void (*)(void *))e1000_reset_task
, netdev
);
915 e1000_check_options(adapter
);
917 /* Initial Wake on LAN setting
918 * If APM wake is enabled in the EEPROM,
919 * enable the ACPI Magic Packet filter
922 switch (adapter
->hw
.mac_type
) {
923 case e1000_82542_rev2_0
:
924 case e1000_82542_rev2_1
:
928 e1000_read_eeprom(&adapter
->hw
,
929 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
930 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
933 e1000_read_eeprom(&adapter
->hw
,
934 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
935 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
938 case e1000_82546_rev_3
:
940 case e1000_80003es2lan
:
941 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
942 e1000_read_eeprom(&adapter
->hw
,
943 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
948 e1000_read_eeprom(&adapter
->hw
,
949 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
952 if (eeprom_data
& eeprom_apme_mask
)
953 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
955 /* now that we have the eeprom settings, apply the special cases
956 * where the eeprom may be wrong or the board simply won't support
957 * wake on lan on a particular port */
958 switch (pdev
->device
) {
959 case E1000_DEV_ID_82546GB_PCIE
:
960 adapter
->eeprom_wol
= 0;
962 case E1000_DEV_ID_82546EB_FIBER
:
963 case E1000_DEV_ID_82546GB_FIBER
:
964 case E1000_DEV_ID_82571EB_FIBER
:
965 /* Wake events only supported on port A for dual fiber
966 * regardless of eeprom setting */
967 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
968 adapter
->eeprom_wol
= 0;
970 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
971 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
972 /* if quad port adapter, disable WoL on all but port A */
973 if (global_quad_port_a
!= 0)
974 adapter
->eeprom_wol
= 0;
976 adapter
->quad_port_a
= 1;
977 /* Reset for multiple quad port adapters */
978 if (++global_quad_port_a
== 4)
979 global_quad_port_a
= 0;
983 /* initialize the wol settings based on the eeprom settings */
984 adapter
->wol
= adapter
->eeprom_wol
;
986 /* print bus type/speed/width info */
988 struct e1000_hw
*hw
= &adapter
->hw
;
989 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
990 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
991 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
992 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
993 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
994 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
995 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
996 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
997 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
998 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
999 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1003 for (i
= 0; i
< 6; i
++)
1004 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1006 /* reset the hardware with the new settings */
1007 e1000_reset(adapter
);
1009 /* If the controller is 82573 and f/w is AMT, do not set
1010 * DRV_LOAD until the interface is up. For all other cases,
1011 * let the f/w know that the h/w is now under the control
1013 if (adapter
->hw
.mac_type
!= e1000_82573
||
1014 !e1000_check_mng_mode(&adapter
->hw
))
1015 e1000_get_hw_control(adapter
);
1017 strcpy(netdev
->name
, "eth%d");
1018 if ((err
= register_netdev(netdev
)))
1021 /* tell the stack to leave us alone until e1000_open() is called */
1022 netif_carrier_off(netdev
);
1023 netif_stop_queue(netdev
);
1025 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1031 e1000_release_hw_control(adapter
);
1033 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1034 e1000_phy_hw_reset(&adapter
->hw
);
1036 if (adapter
->hw
.flash_address
)
1037 iounmap(adapter
->hw
.flash_address
);
1039 #ifdef CONFIG_E1000_NAPI
1040 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1041 dev_put(&adapter
->polling_netdev
[i
]);
1044 kfree(adapter
->tx_ring
);
1045 kfree(adapter
->rx_ring
);
1046 #ifdef CONFIG_E1000_NAPI
1047 kfree(adapter
->polling_netdev
);
1050 iounmap(adapter
->hw
.hw_addr
);
1052 free_netdev(netdev
);
1054 pci_release_regions(pdev
);
1057 pci_disable_device(pdev
);
1062 * e1000_remove - Device Removal Routine
1063 * @pdev: PCI device information struct
1065 * e1000_remove is called by the PCI subsystem to alert the driver
1066 * that it should release a PCI device. The could be caused by a
1067 * Hot-Plug event, or because the driver is going to be removed from
1071 static void __devexit
1072 e1000_remove(struct pci_dev
*pdev
)
1074 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1075 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1077 #ifdef CONFIG_E1000_NAPI
1081 flush_scheduled_work();
1083 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1084 adapter
->hw
.mac_type
< e1000_82571
&&
1085 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1086 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1087 if (manc
& E1000_MANC_SMBUS_EN
) {
1088 manc
|= E1000_MANC_ARP_EN
;
1089 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1093 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1094 * would have already happened in close and is redundant. */
1095 e1000_release_hw_control(adapter
);
1097 unregister_netdev(netdev
);
1098 #ifdef CONFIG_E1000_NAPI
1099 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1100 dev_put(&adapter
->polling_netdev
[i
]);
1103 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1104 e1000_phy_hw_reset(&adapter
->hw
);
1106 kfree(adapter
->tx_ring
);
1107 kfree(adapter
->rx_ring
);
1108 #ifdef CONFIG_E1000_NAPI
1109 kfree(adapter
->polling_netdev
);
1112 iounmap(adapter
->hw
.hw_addr
);
1113 if (adapter
->hw
.flash_address
)
1114 iounmap(adapter
->hw
.flash_address
);
1115 pci_release_regions(pdev
);
1117 free_netdev(netdev
);
1119 pci_disable_device(pdev
);
1123 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1124 * @adapter: board private structure to initialize
1126 * e1000_sw_init initializes the Adapter private data structure.
1127 * Fields are initialized based on PCI device information and
1128 * OS network device settings (MTU size).
1131 static int __devinit
1132 e1000_sw_init(struct e1000_adapter
*adapter
)
1134 struct e1000_hw
*hw
= &adapter
->hw
;
1135 struct net_device
*netdev
= adapter
->netdev
;
1136 struct pci_dev
*pdev
= adapter
->pdev
;
1137 #ifdef CONFIG_E1000_NAPI
1141 /* PCI config space info */
1143 hw
->vendor_id
= pdev
->vendor
;
1144 hw
->device_id
= pdev
->device
;
1145 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1146 hw
->subsystem_id
= pdev
->subsystem_device
;
1148 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1150 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1152 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1153 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1154 hw
->max_frame_size
= netdev
->mtu
+
1155 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1156 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1158 /* identify the MAC */
1160 if (e1000_set_mac_type(hw
)) {
1161 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1165 switch (hw
->mac_type
) {
1170 case e1000_82541_rev_2
:
1171 case e1000_82547_rev_2
:
1172 hw
->phy_init_script
= 1;
1176 e1000_set_media_type(hw
);
1178 hw
->wait_autoneg_complete
= FALSE
;
1179 hw
->tbi_compatibility_en
= TRUE
;
1180 hw
->adaptive_ifs
= TRUE
;
1182 /* Copper options */
1184 if (hw
->media_type
== e1000_media_type_copper
) {
1185 hw
->mdix
= AUTO_ALL_MODES
;
1186 hw
->disable_polarity_correction
= FALSE
;
1187 hw
->master_slave
= E1000_MASTER_SLAVE
;
1190 adapter
->num_tx_queues
= 1;
1191 adapter
->num_rx_queues
= 1;
1193 if (e1000_alloc_queues(adapter
)) {
1194 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1198 #ifdef CONFIG_E1000_NAPI
1199 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1200 adapter
->polling_netdev
[i
].priv
= adapter
;
1201 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1202 adapter
->polling_netdev
[i
].weight
= 64;
1203 dev_hold(&adapter
->polling_netdev
[i
]);
1204 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1206 spin_lock_init(&adapter
->tx_queue_lock
);
1209 atomic_set(&adapter
->irq_sem
, 1);
1210 spin_lock_init(&adapter
->stats_lock
);
1212 set_bit(__E1000_DOWN
, &adapter
->flags
);
1218 * e1000_alloc_queues - Allocate memory for all rings
1219 * @adapter: board private structure to initialize
1221 * We allocate one ring per queue at run-time since we don't know the
1222 * number of queues at compile-time. The polling_netdev array is
1223 * intended for Multiqueue, but should work fine with a single queue.
1226 static int __devinit
1227 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1231 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1232 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1233 if (!adapter
->tx_ring
)
1235 memset(adapter
->tx_ring
, 0, size
);
1237 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1238 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1239 if (!adapter
->rx_ring
) {
1240 kfree(adapter
->tx_ring
);
1243 memset(adapter
->rx_ring
, 0, size
);
1245 #ifdef CONFIG_E1000_NAPI
1246 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1247 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1248 if (!adapter
->polling_netdev
) {
1249 kfree(adapter
->tx_ring
);
1250 kfree(adapter
->rx_ring
);
1253 memset(adapter
->polling_netdev
, 0, size
);
1256 return E1000_SUCCESS
;
1260 * e1000_open - Called when a network interface is made active
1261 * @netdev: network interface device structure
1263 * Returns 0 on success, negative value on failure
1265 * The open entry point is called when a network interface is made
1266 * active by the system (IFF_UP). At this point all resources needed
1267 * for transmit and receive operations are allocated, the interrupt
1268 * handler is registered with the OS, the watchdog timer is started,
1269 * and the stack is notified that the interface is ready.
1273 e1000_open(struct net_device
*netdev
)
1275 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1278 /* disallow open during test */
1279 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1282 /* allocate transmit descriptors */
1283 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1286 /* allocate receive descriptors */
1287 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1290 err
= e1000_request_irq(adapter
);
1294 e1000_power_up_phy(adapter
);
1296 if ((err
= e1000_up(adapter
)))
1298 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1299 if ((adapter
->hw
.mng_cookie
.status
&
1300 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1301 e1000_update_mng_vlan(adapter
);
1304 /* If AMT is enabled, let the firmware know that the network
1305 * interface is now open */
1306 if (adapter
->hw
.mac_type
== e1000_82573
&&
1307 e1000_check_mng_mode(&adapter
->hw
))
1308 e1000_get_hw_control(adapter
);
1310 return E1000_SUCCESS
;
1313 e1000_power_down_phy(adapter
);
1314 e1000_free_irq(adapter
);
1316 e1000_free_all_rx_resources(adapter
);
1318 e1000_free_all_tx_resources(adapter
);
1320 e1000_reset(adapter
);
1326 * e1000_close - Disables a network interface
1327 * @netdev: network interface device structure
1329 * Returns 0, this is not allowed to fail
1331 * The close entry point is called when an interface is de-activated
1332 * by the OS. The hardware is still under the drivers control, but
1333 * needs to be disabled. A global MAC reset is issued to stop the
1334 * hardware, and all transmit and receive resources are freed.
1338 e1000_close(struct net_device
*netdev
)
1340 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1342 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1343 e1000_down(adapter
);
1344 e1000_power_down_phy(adapter
);
1345 e1000_free_irq(adapter
);
1347 e1000_free_all_tx_resources(adapter
);
1348 e1000_free_all_rx_resources(adapter
);
1350 /* kill manageability vlan ID if supported, but not if a vlan with
1351 * the same ID is registered on the host OS (let 8021q kill it) */
1352 if ((adapter
->hw
.mng_cookie
.status
&
1353 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1355 adapter
->vlgrp
->vlan_devices
[adapter
->mng_vlan_id
])) {
1356 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1359 /* If AMT is enabled, let the firmware know that the network
1360 * interface is now closed */
1361 if (adapter
->hw
.mac_type
== e1000_82573
&&
1362 e1000_check_mng_mode(&adapter
->hw
))
1363 e1000_release_hw_control(adapter
);
1369 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1370 * @adapter: address of board private structure
1371 * @start: address of beginning of memory
1372 * @len: length of memory
1375 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1376 void *start
, unsigned long len
)
1378 unsigned long begin
= (unsigned long) start
;
1379 unsigned long end
= begin
+ len
;
1381 /* First rev 82545 and 82546 need to not allow any memory
1382 * write location to cross 64k boundary due to errata 23 */
1383 if (adapter
->hw
.mac_type
== e1000_82545
||
1384 adapter
->hw
.mac_type
== e1000_82546
) {
1385 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1392 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1393 * @adapter: board private structure
1394 * @txdr: tx descriptor ring (for a specific queue) to setup
1396 * Return 0 on success, negative on failure
1400 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1401 struct e1000_tx_ring
*txdr
)
1403 struct pci_dev
*pdev
= adapter
->pdev
;
1406 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1407 txdr
->buffer_info
= vmalloc(size
);
1408 if (!txdr
->buffer_info
) {
1410 "Unable to allocate memory for the transmit descriptor ring\n");
1413 memset(txdr
->buffer_info
, 0, size
);
1415 /* round up to nearest 4K */
1417 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1418 E1000_ROUNDUP(txdr
->size
, 4096);
1420 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1423 vfree(txdr
->buffer_info
);
1425 "Unable to allocate memory for the transmit descriptor ring\n");
1429 /* Fix for errata 23, can't cross 64kB boundary */
1430 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1431 void *olddesc
= txdr
->desc
;
1432 dma_addr_t olddma
= txdr
->dma
;
1433 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1434 "at %p\n", txdr
->size
, txdr
->desc
);
1435 /* Try again, without freeing the previous */
1436 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1437 /* Failed allocation, critical failure */
1439 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1440 goto setup_tx_desc_die
;
1443 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1445 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1447 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1449 "Unable to allocate aligned memory "
1450 "for the transmit descriptor ring\n");
1451 vfree(txdr
->buffer_info
);
1454 /* Free old allocation, new allocation was successful */
1455 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1458 memset(txdr
->desc
, 0, txdr
->size
);
1460 txdr
->next_to_use
= 0;
1461 txdr
->next_to_clean
= 0;
1462 spin_lock_init(&txdr
->tx_lock
);
1468 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1469 * (Descriptors) for all queues
1470 * @adapter: board private structure
1472 * Return 0 on success, negative on failure
1476 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1480 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1481 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1484 "Allocation for Tx Queue %u failed\n", i
);
1485 for (i
-- ; i
>= 0; i
--)
1486 e1000_free_tx_resources(adapter
,
1487 &adapter
->tx_ring
[i
]);
1496 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1497 * @adapter: board private structure
1499 * Configure the Tx unit of the MAC after a reset.
1503 e1000_configure_tx(struct e1000_adapter
*adapter
)
1506 struct e1000_hw
*hw
= &adapter
->hw
;
1507 uint32_t tdlen
, tctl
, tipg
, tarc
;
1508 uint32_t ipgr1
, ipgr2
;
1510 /* Setup the HW Tx Head and Tail descriptor pointers */
1512 switch (adapter
->num_tx_queues
) {
1515 tdba
= adapter
->tx_ring
[0].dma
;
1516 tdlen
= adapter
->tx_ring
[0].count
*
1517 sizeof(struct e1000_tx_desc
);
1518 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1519 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1520 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1521 E1000_WRITE_REG(hw
, TDT
, 0);
1522 E1000_WRITE_REG(hw
, TDH
, 0);
1523 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1524 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1528 /* Set the default values for the Tx Inter Packet Gap timer */
1530 if (hw
->media_type
== e1000_media_type_fiber
||
1531 hw
->media_type
== e1000_media_type_internal_serdes
)
1532 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1534 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1536 switch (hw
->mac_type
) {
1537 case e1000_82542_rev2_0
:
1538 case e1000_82542_rev2_1
:
1539 tipg
= DEFAULT_82542_TIPG_IPGT
;
1540 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1541 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1543 case e1000_80003es2lan
:
1544 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1545 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1548 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1549 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1552 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1553 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1554 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1556 /* Set the Tx Interrupt Delay register */
1558 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1559 if (hw
->mac_type
>= e1000_82540
)
1560 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1562 /* Program the Transmit Control Register */
1564 tctl
= E1000_READ_REG(hw
, TCTL
);
1565 tctl
&= ~E1000_TCTL_CT
;
1566 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1567 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1569 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1570 tarc
= E1000_READ_REG(hw
, TARC0
);
1571 /* set the speed mode bit, we'll clear it if we're not at
1572 * gigabit link later */
1574 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1575 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1576 tarc
= E1000_READ_REG(hw
, TARC0
);
1578 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1579 tarc
= E1000_READ_REG(hw
, TARC1
);
1581 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1584 e1000_config_collision_dist(hw
);
1586 /* Setup Transmit Descriptor Settings for eop descriptor */
1587 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1590 if (hw
->mac_type
< e1000_82543
)
1591 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1593 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1595 /* Cache if we're 82544 running in PCI-X because we'll
1596 * need this to apply a workaround later in the send path. */
1597 if (hw
->mac_type
== e1000_82544
&&
1598 hw
->bus_type
== e1000_bus_type_pcix
)
1599 adapter
->pcix_82544
= 1;
1601 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1606 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1607 * @adapter: board private structure
1608 * @rxdr: rx descriptor ring (for a specific queue) to setup
1610 * Returns 0 on success, negative on failure
1614 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1615 struct e1000_rx_ring
*rxdr
)
1617 struct pci_dev
*pdev
= adapter
->pdev
;
1620 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1621 rxdr
->buffer_info
= vmalloc(size
);
1622 if (!rxdr
->buffer_info
) {
1624 "Unable to allocate memory for the receive descriptor ring\n");
1627 memset(rxdr
->buffer_info
, 0, size
);
1629 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1630 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1631 if (!rxdr
->ps_page
) {
1632 vfree(rxdr
->buffer_info
);
1634 "Unable to allocate memory for the receive descriptor ring\n");
1637 memset(rxdr
->ps_page
, 0, size
);
1639 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1640 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1641 if (!rxdr
->ps_page_dma
) {
1642 vfree(rxdr
->buffer_info
);
1643 kfree(rxdr
->ps_page
);
1645 "Unable to allocate memory for the receive descriptor ring\n");
1648 memset(rxdr
->ps_page_dma
, 0, size
);
1650 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1651 desc_len
= sizeof(struct e1000_rx_desc
);
1653 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1655 /* Round up to nearest 4K */
1657 rxdr
->size
= rxdr
->count
* desc_len
;
1658 E1000_ROUNDUP(rxdr
->size
, 4096);
1660 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1664 "Unable to allocate memory for the receive descriptor ring\n");
1666 vfree(rxdr
->buffer_info
);
1667 kfree(rxdr
->ps_page
);
1668 kfree(rxdr
->ps_page_dma
);
1672 /* Fix for errata 23, can't cross 64kB boundary */
1673 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1674 void *olddesc
= rxdr
->desc
;
1675 dma_addr_t olddma
= rxdr
->dma
;
1676 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1677 "at %p\n", rxdr
->size
, rxdr
->desc
);
1678 /* Try again, without freeing the previous */
1679 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1680 /* Failed allocation, critical failure */
1682 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1684 "Unable to allocate memory "
1685 "for the receive descriptor ring\n");
1686 goto setup_rx_desc_die
;
1689 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1691 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1693 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1695 "Unable to allocate aligned memory "
1696 "for the receive descriptor ring\n");
1697 goto setup_rx_desc_die
;
1699 /* Free old allocation, new allocation was successful */
1700 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1703 memset(rxdr
->desc
, 0, rxdr
->size
);
1705 rxdr
->next_to_clean
= 0;
1706 rxdr
->next_to_use
= 0;
1712 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1713 * (Descriptors) for all queues
1714 * @adapter: board private structure
1716 * Return 0 on success, negative on failure
1720 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1724 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1725 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1728 "Allocation for Rx Queue %u failed\n", i
);
1729 for (i
-- ; i
>= 0; i
--)
1730 e1000_free_rx_resources(adapter
,
1731 &adapter
->rx_ring
[i
]);
1740 * e1000_setup_rctl - configure the receive control registers
1741 * @adapter: Board private structure
1743 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1744 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1746 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1748 uint32_t rctl
, rfctl
;
1749 uint32_t psrctl
= 0;
1750 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1754 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1756 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1758 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1759 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1760 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1762 if (adapter
->hw
.tbi_compatibility_on
== 1)
1763 rctl
|= E1000_RCTL_SBP
;
1765 rctl
&= ~E1000_RCTL_SBP
;
1767 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1768 rctl
&= ~E1000_RCTL_LPE
;
1770 rctl
|= E1000_RCTL_LPE
;
1772 /* Setup buffer sizes */
1773 rctl
&= ~E1000_RCTL_SZ_4096
;
1774 rctl
|= E1000_RCTL_BSEX
;
1775 switch (adapter
->rx_buffer_len
) {
1776 case E1000_RXBUFFER_256
:
1777 rctl
|= E1000_RCTL_SZ_256
;
1778 rctl
&= ~E1000_RCTL_BSEX
;
1780 case E1000_RXBUFFER_512
:
1781 rctl
|= E1000_RCTL_SZ_512
;
1782 rctl
&= ~E1000_RCTL_BSEX
;
1784 case E1000_RXBUFFER_1024
:
1785 rctl
|= E1000_RCTL_SZ_1024
;
1786 rctl
&= ~E1000_RCTL_BSEX
;
1788 case E1000_RXBUFFER_2048
:
1790 rctl
|= E1000_RCTL_SZ_2048
;
1791 rctl
&= ~E1000_RCTL_BSEX
;
1793 case E1000_RXBUFFER_4096
:
1794 rctl
|= E1000_RCTL_SZ_4096
;
1796 case E1000_RXBUFFER_8192
:
1797 rctl
|= E1000_RCTL_SZ_8192
;
1799 case E1000_RXBUFFER_16384
:
1800 rctl
|= E1000_RCTL_SZ_16384
;
1804 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1805 /* 82571 and greater support packet-split where the protocol
1806 * header is placed in skb->data and the packet data is
1807 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1808 * In the case of a non-split, skb->data is linearly filled,
1809 * followed by the page buffers. Therefore, skb->data is
1810 * sized to hold the largest protocol header.
1812 /* allocations using alloc_page take too long for regular MTU
1813 * so only enable packet split for jumbo frames */
1814 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1815 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1816 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1817 adapter
->rx_ps_pages
= pages
;
1819 adapter
->rx_ps_pages
= 0;
1821 if (adapter
->rx_ps_pages
) {
1822 /* Configure extra packet-split registers */
1823 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1824 rfctl
|= E1000_RFCTL_EXTEN
;
1825 /* disable IPv6 packet split support */
1826 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1827 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1829 rctl
|= E1000_RCTL_DTYP_PS
;
1831 psrctl
|= adapter
->rx_ps_bsize0
>>
1832 E1000_PSRCTL_BSIZE0_SHIFT
;
1834 switch (adapter
->rx_ps_pages
) {
1836 psrctl
|= PAGE_SIZE
<<
1837 E1000_PSRCTL_BSIZE3_SHIFT
;
1839 psrctl
|= PAGE_SIZE
<<
1840 E1000_PSRCTL_BSIZE2_SHIFT
;
1842 psrctl
|= PAGE_SIZE
>>
1843 E1000_PSRCTL_BSIZE1_SHIFT
;
1847 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1850 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1854 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1855 * @adapter: board private structure
1857 * Configure the Rx unit of the MAC after a reset.
1861 e1000_configure_rx(struct e1000_adapter
*adapter
)
1864 struct e1000_hw
*hw
= &adapter
->hw
;
1865 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1867 if (adapter
->rx_ps_pages
) {
1868 /* this is a 32 byte descriptor */
1869 rdlen
= adapter
->rx_ring
[0].count
*
1870 sizeof(union e1000_rx_desc_packet_split
);
1871 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1872 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1874 rdlen
= adapter
->rx_ring
[0].count
*
1875 sizeof(struct e1000_rx_desc
);
1876 adapter
->clean_rx
= e1000_clean_rx_irq
;
1877 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1880 /* disable receives while setting up the descriptors */
1881 rctl
= E1000_READ_REG(hw
, RCTL
);
1882 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1884 /* set the Receive Delay Timer Register */
1885 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1887 if (hw
->mac_type
>= e1000_82540
) {
1888 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1889 if (adapter
->itr
> 1)
1890 E1000_WRITE_REG(hw
, ITR
,
1891 1000000000 / (adapter
->itr
* 256));
1894 if (hw
->mac_type
>= e1000_82571
) {
1895 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1896 /* Reset delay timers after every interrupt */
1897 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1898 #ifdef CONFIG_E1000_NAPI
1899 /* Auto-Mask interrupts upon ICR read. */
1900 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1902 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1903 E1000_WRITE_REG(hw
, IAM
, ~0);
1904 E1000_WRITE_FLUSH(hw
);
1907 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1908 * the Base and Length of the Rx Descriptor Ring */
1909 switch (adapter
->num_rx_queues
) {
1912 rdba
= adapter
->rx_ring
[0].dma
;
1913 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1914 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1915 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1916 E1000_WRITE_REG(hw
, RDT
, 0);
1917 E1000_WRITE_REG(hw
, RDH
, 0);
1918 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1919 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1923 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1924 if (hw
->mac_type
>= e1000_82543
) {
1925 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1926 if (adapter
->rx_csum
== TRUE
) {
1927 rxcsum
|= E1000_RXCSUM_TUOFL
;
1929 /* Enable 82571 IPv4 payload checksum for UDP fragments
1930 * Must be used in conjunction with packet-split. */
1931 if ((hw
->mac_type
>= e1000_82571
) &&
1932 (adapter
->rx_ps_pages
)) {
1933 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1936 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1937 /* don't need to clear IPPCSE as it defaults to 0 */
1939 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1942 /* Enable Receives */
1943 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1947 * e1000_free_tx_resources - Free Tx Resources per Queue
1948 * @adapter: board private structure
1949 * @tx_ring: Tx descriptor ring for a specific queue
1951 * Free all transmit software resources
1955 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1956 struct e1000_tx_ring
*tx_ring
)
1958 struct pci_dev
*pdev
= adapter
->pdev
;
1960 e1000_clean_tx_ring(adapter
, tx_ring
);
1962 vfree(tx_ring
->buffer_info
);
1963 tx_ring
->buffer_info
= NULL
;
1965 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1967 tx_ring
->desc
= NULL
;
1971 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1972 * @adapter: board private structure
1974 * Free all transmit software resources
1978 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1982 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1983 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1987 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1988 struct e1000_buffer
*buffer_info
)
1990 if (buffer_info
->dma
) {
1991 pci_unmap_page(adapter
->pdev
,
1993 buffer_info
->length
,
1996 if (buffer_info
->skb
)
1997 dev_kfree_skb_any(buffer_info
->skb
);
1998 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
2002 * e1000_clean_tx_ring - Free Tx Buffers
2003 * @adapter: board private structure
2004 * @tx_ring: ring to be cleaned
2008 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2009 struct e1000_tx_ring
*tx_ring
)
2011 struct e1000_buffer
*buffer_info
;
2015 /* Free all the Tx ring sk_buffs */
2017 for (i
= 0; i
< tx_ring
->count
; i
++) {
2018 buffer_info
= &tx_ring
->buffer_info
[i
];
2019 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2022 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2023 memset(tx_ring
->buffer_info
, 0, size
);
2025 /* Zero out the descriptor ring */
2027 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2029 tx_ring
->next_to_use
= 0;
2030 tx_ring
->next_to_clean
= 0;
2031 tx_ring
->last_tx_tso
= 0;
2033 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2034 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2038 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2039 * @adapter: board private structure
2043 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2047 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2048 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2052 * e1000_free_rx_resources - Free Rx Resources
2053 * @adapter: board private structure
2054 * @rx_ring: ring to clean the resources from
2056 * Free all receive software resources
2060 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2061 struct e1000_rx_ring
*rx_ring
)
2063 struct pci_dev
*pdev
= adapter
->pdev
;
2065 e1000_clean_rx_ring(adapter
, rx_ring
);
2067 vfree(rx_ring
->buffer_info
);
2068 rx_ring
->buffer_info
= NULL
;
2069 kfree(rx_ring
->ps_page
);
2070 rx_ring
->ps_page
= NULL
;
2071 kfree(rx_ring
->ps_page_dma
);
2072 rx_ring
->ps_page_dma
= NULL
;
2074 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2076 rx_ring
->desc
= NULL
;
2080 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2081 * @adapter: board private structure
2083 * Free all receive software resources
2087 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2091 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2092 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2096 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2097 * @adapter: board private structure
2098 * @rx_ring: ring to free buffers from
2102 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2103 struct e1000_rx_ring
*rx_ring
)
2105 struct e1000_buffer
*buffer_info
;
2106 struct e1000_ps_page
*ps_page
;
2107 struct e1000_ps_page_dma
*ps_page_dma
;
2108 struct pci_dev
*pdev
= adapter
->pdev
;
2112 /* Free all the Rx ring sk_buffs */
2113 for (i
= 0; i
< rx_ring
->count
; i
++) {
2114 buffer_info
= &rx_ring
->buffer_info
[i
];
2115 if (buffer_info
->skb
) {
2116 pci_unmap_single(pdev
,
2118 buffer_info
->length
,
2119 PCI_DMA_FROMDEVICE
);
2121 dev_kfree_skb(buffer_info
->skb
);
2122 buffer_info
->skb
= NULL
;
2124 ps_page
= &rx_ring
->ps_page
[i
];
2125 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2126 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2127 if (!ps_page
->ps_page
[j
]) break;
2128 pci_unmap_page(pdev
,
2129 ps_page_dma
->ps_page_dma
[j
],
2130 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2131 ps_page_dma
->ps_page_dma
[j
] = 0;
2132 put_page(ps_page
->ps_page
[j
]);
2133 ps_page
->ps_page
[j
] = NULL
;
2137 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2138 memset(rx_ring
->buffer_info
, 0, size
);
2139 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2140 memset(rx_ring
->ps_page
, 0, size
);
2141 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2142 memset(rx_ring
->ps_page_dma
, 0, size
);
2144 /* Zero out the descriptor ring */
2146 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2148 rx_ring
->next_to_clean
= 0;
2149 rx_ring
->next_to_use
= 0;
2151 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2152 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2156 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2157 * @adapter: board private structure
2161 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2165 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2166 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2169 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2170 * and memory write and invalidate disabled for certain operations
2173 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2175 struct net_device
*netdev
= adapter
->netdev
;
2178 e1000_pci_clear_mwi(&adapter
->hw
);
2180 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2181 rctl
|= E1000_RCTL_RST
;
2182 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2183 E1000_WRITE_FLUSH(&adapter
->hw
);
2186 if (netif_running(netdev
))
2187 e1000_clean_all_rx_rings(adapter
);
2191 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2193 struct net_device
*netdev
= adapter
->netdev
;
2196 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2197 rctl
&= ~E1000_RCTL_RST
;
2198 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2199 E1000_WRITE_FLUSH(&adapter
->hw
);
2202 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2203 e1000_pci_set_mwi(&adapter
->hw
);
2205 if (netif_running(netdev
)) {
2206 /* No need to loop, because 82542 supports only 1 queue */
2207 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2208 e1000_configure_rx(adapter
);
2209 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2214 * e1000_set_mac - Change the Ethernet Address of the NIC
2215 * @netdev: network interface device structure
2216 * @p: pointer to an address structure
2218 * Returns 0 on success, negative on failure
2222 e1000_set_mac(struct net_device
*netdev
, void *p
)
2224 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2225 struct sockaddr
*addr
= p
;
2227 if (!is_valid_ether_addr(addr
->sa_data
))
2228 return -EADDRNOTAVAIL
;
2230 /* 82542 2.0 needs to be in reset to write receive address registers */
2232 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2233 e1000_enter_82542_rst(adapter
);
2235 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2236 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2238 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2240 /* With 82571 controllers, LAA may be overwritten (with the default)
2241 * due to controller reset from the other port. */
2242 if (adapter
->hw
.mac_type
== e1000_82571
) {
2243 /* activate the work around */
2244 adapter
->hw
.laa_is_present
= 1;
2246 /* Hold a copy of the LAA in RAR[14] This is done so that
2247 * between the time RAR[0] gets clobbered and the time it
2248 * gets fixed (in e1000_watchdog), the actual LAA is in one
2249 * of the RARs and no incoming packets directed to this port
2250 * are dropped. Eventaully the LAA will be in RAR[0] and
2252 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2253 E1000_RAR_ENTRIES
- 1);
2256 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2257 e1000_leave_82542_rst(adapter
);
2263 * e1000_set_multi - Multicast and Promiscuous mode set
2264 * @netdev: network interface device structure
2266 * The set_multi entry point is called whenever the multicast address
2267 * list or the network interface flags are updated. This routine is
2268 * responsible for configuring the hardware for proper multicast,
2269 * promiscuous mode, and all-multi behavior.
2273 e1000_set_multi(struct net_device
*netdev
)
2275 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2276 struct e1000_hw
*hw
= &adapter
->hw
;
2277 struct dev_mc_list
*mc_ptr
;
2279 uint32_t hash_value
;
2280 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2281 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2282 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2283 E1000_NUM_MTA_REGISTERS
;
2285 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2286 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2288 /* reserve RAR[14] for LAA over-write work-around */
2289 if (adapter
->hw
.mac_type
== e1000_82571
)
2292 /* Check for Promiscuous and All Multicast modes */
2294 rctl
= E1000_READ_REG(hw
, RCTL
);
2296 if (netdev
->flags
& IFF_PROMISC
) {
2297 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2298 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2299 rctl
|= E1000_RCTL_MPE
;
2300 rctl
&= ~E1000_RCTL_UPE
;
2302 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2305 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2307 /* 82542 2.0 needs to be in reset to write receive address registers */
2309 if (hw
->mac_type
== e1000_82542_rev2_0
)
2310 e1000_enter_82542_rst(adapter
);
2312 /* load the first 14 multicast address into the exact filters 1-14
2313 * RAR 0 is used for the station MAC adddress
2314 * if there are not 14 addresses, go ahead and clear the filters
2315 * -- with 82571 controllers only 0-13 entries are filled here
2317 mc_ptr
= netdev
->mc_list
;
2319 for (i
= 1; i
< rar_entries
; i
++) {
2321 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2322 mc_ptr
= mc_ptr
->next
;
2324 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2325 E1000_WRITE_FLUSH(hw
);
2326 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2327 E1000_WRITE_FLUSH(hw
);
2331 /* clear the old settings from the multicast hash table */
2333 for (i
= 0; i
< mta_reg_count
; i
++) {
2334 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2335 E1000_WRITE_FLUSH(hw
);
2338 /* load any remaining addresses into the hash table */
2340 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2341 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2342 e1000_mta_set(hw
, hash_value
);
2345 if (hw
->mac_type
== e1000_82542_rev2_0
)
2346 e1000_leave_82542_rst(adapter
);
2349 /* Need to wait a few seconds after link up to get diagnostic information from
2353 e1000_update_phy_info(unsigned long data
)
2355 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2356 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2360 * e1000_82547_tx_fifo_stall - Timer Call-back
2361 * @data: pointer to adapter cast into an unsigned long
2365 e1000_82547_tx_fifo_stall(unsigned long data
)
2367 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2368 struct net_device
*netdev
= adapter
->netdev
;
2371 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2372 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2373 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2374 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2375 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2376 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2377 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2378 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2379 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2380 tctl
& ~E1000_TCTL_EN
);
2381 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2382 adapter
->tx_head_addr
);
2383 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2384 adapter
->tx_head_addr
);
2385 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2386 adapter
->tx_head_addr
);
2387 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2388 adapter
->tx_head_addr
);
2389 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2390 E1000_WRITE_FLUSH(&adapter
->hw
);
2392 adapter
->tx_fifo_head
= 0;
2393 atomic_set(&adapter
->tx_fifo_stall
, 0);
2394 netif_wake_queue(netdev
);
2396 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2402 * e1000_watchdog - Timer Call-back
2403 * @data: pointer to adapter cast into an unsigned long
2406 e1000_watchdog(unsigned long data
)
2408 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2409 struct net_device
*netdev
= adapter
->netdev
;
2410 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2411 uint32_t link
, tctl
;
2414 ret_val
= e1000_check_for_link(&adapter
->hw
);
2415 if ((ret_val
== E1000_ERR_PHY
) &&
2416 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2417 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2418 /* See e1000_kumeran_lock_loss_workaround() */
2420 "Gigabit has been disabled, downgrading speed\n");
2423 if (adapter
->hw
.mac_type
== e1000_82573
) {
2424 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2425 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2426 e1000_update_mng_vlan(adapter
);
2429 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2430 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2431 link
= !adapter
->hw
.serdes_link_down
;
2433 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2436 if (!netif_carrier_ok(netdev
)) {
2437 boolean_t txb2b
= 1;
2438 e1000_get_speed_and_duplex(&adapter
->hw
,
2439 &adapter
->link_speed
,
2440 &adapter
->link_duplex
);
2442 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2443 adapter
->link_speed
,
2444 adapter
->link_duplex
== FULL_DUPLEX
?
2445 "Full Duplex" : "Half Duplex");
2447 /* tweak tx_queue_len according to speed/duplex
2448 * and adjust the timeout factor */
2449 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2450 adapter
->tx_timeout_factor
= 1;
2451 switch (adapter
->link_speed
) {
2454 netdev
->tx_queue_len
= 10;
2455 adapter
->tx_timeout_factor
= 8;
2459 netdev
->tx_queue_len
= 100;
2460 /* maybe add some timeout factor ? */
2464 if ((adapter
->hw
.mac_type
== e1000_82571
||
2465 adapter
->hw
.mac_type
== e1000_82572
) &&
2468 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2469 tarc0
&= ~(1 << 21);
2470 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2474 /* disable TSO for pcie and 10/100 speeds, to avoid
2475 * some hardware issues */
2476 if (!adapter
->tso_force
&&
2477 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2478 switch (adapter
->link_speed
) {
2482 "10/100 speed: disabling TSO\n");
2483 netdev
->features
&= ~NETIF_F_TSO
;
2486 netdev
->features
|= NETIF_F_TSO
;
2495 /* enable transmits in the hardware, need to do this
2496 * after setting TARC0 */
2497 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2498 tctl
|= E1000_TCTL_EN
;
2499 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2501 netif_carrier_on(netdev
);
2502 netif_wake_queue(netdev
);
2503 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2504 adapter
->smartspeed
= 0;
2507 if (netif_carrier_ok(netdev
)) {
2508 adapter
->link_speed
= 0;
2509 adapter
->link_duplex
= 0;
2510 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2511 netif_carrier_off(netdev
);
2512 netif_stop_queue(netdev
);
2513 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2515 /* 80003ES2LAN workaround--
2516 * For packet buffer work-around on link down event;
2517 * disable receives in the ISR and
2518 * reset device here in the watchdog
2520 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2522 schedule_work(&adapter
->reset_task
);
2525 e1000_smartspeed(adapter
);
2528 e1000_update_stats(adapter
);
2530 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2531 adapter
->tpt_old
= adapter
->stats
.tpt
;
2532 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2533 adapter
->colc_old
= adapter
->stats
.colc
;
2535 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2536 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2537 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2538 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2540 e1000_update_adaptive(&adapter
->hw
);
2542 if (!netif_carrier_ok(netdev
)) {
2543 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2544 /* We've lost link, so the controller stops DMA,
2545 * but we've got queued Tx work that's never going
2546 * to get done, so reset controller to flush Tx.
2547 * (Do the reset outside of interrupt context). */
2548 adapter
->tx_timeout_count
++;
2549 schedule_work(&adapter
->reset_task
);
2553 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2554 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2555 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2556 * asymmetrical Tx or Rx gets ITR=8000; everyone
2557 * else is between 2000-8000. */
2558 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2559 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2560 adapter
->gotcl
- adapter
->gorcl
:
2561 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2562 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2563 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2566 /* Cause software interrupt to ensure rx ring is cleaned */
2567 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2569 /* Force detection of hung controller every watchdog period */
2570 adapter
->detect_tx_hung
= TRUE
;
2572 /* With 82571 controllers, LAA may be overwritten due to controller
2573 * reset from the other port. Set the appropriate LAA in RAR[0] */
2574 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2575 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2577 /* Reset the timer */
2578 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2581 #define E1000_TX_FLAGS_CSUM 0x00000001
2582 #define E1000_TX_FLAGS_VLAN 0x00000002
2583 #define E1000_TX_FLAGS_TSO 0x00000004
2584 #define E1000_TX_FLAGS_IPV4 0x00000008
2585 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2586 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2589 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2590 struct sk_buff
*skb
)
2593 struct e1000_context_desc
*context_desc
;
2594 struct e1000_buffer
*buffer_info
;
2596 uint32_t cmd_length
= 0;
2597 uint16_t ipcse
= 0, tucse
, mss
;
2598 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2601 if (skb_is_gso(skb
)) {
2602 if (skb_header_cloned(skb
)) {
2603 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2608 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2609 mss
= skb_shinfo(skb
)->gso_size
;
2610 if (skb
->protocol
== htons(ETH_P_IP
)) {
2611 skb
->nh
.iph
->tot_len
= 0;
2612 skb
->nh
.iph
->check
= 0;
2614 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2619 cmd_length
= E1000_TXD_CMD_IP
;
2620 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2621 #ifdef NETIF_F_TSO_IPV6
2622 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2623 skb
->nh
.ipv6h
->payload_len
= 0;
2625 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2626 &skb
->nh
.ipv6h
->daddr
,
2633 ipcss
= skb
->nh
.raw
- skb
->data
;
2634 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2635 tucss
= skb
->h
.raw
- skb
->data
;
2636 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2639 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2640 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2642 i
= tx_ring
->next_to_use
;
2643 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2644 buffer_info
= &tx_ring
->buffer_info
[i
];
2646 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2647 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2648 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2649 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2650 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2651 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2652 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2653 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2654 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2656 buffer_info
->time_stamp
= jiffies
;
2658 if (++i
== tx_ring
->count
) i
= 0;
2659 tx_ring
->next_to_use
= i
;
2669 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2670 struct sk_buff
*skb
)
2672 struct e1000_context_desc
*context_desc
;
2673 struct e1000_buffer
*buffer_info
;
2677 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2678 css
= skb
->h
.raw
- skb
->data
;
2680 i
= tx_ring
->next_to_use
;
2681 buffer_info
= &tx_ring
->buffer_info
[i
];
2682 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2684 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2685 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2686 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2687 context_desc
->tcp_seg_setup
.data
= 0;
2688 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2690 buffer_info
->time_stamp
= jiffies
;
2692 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2693 tx_ring
->next_to_use
= i
;
2701 #define E1000_MAX_TXD_PWR 12
2702 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2705 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2706 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2707 unsigned int nr_frags
, unsigned int mss
)
2709 struct e1000_buffer
*buffer_info
;
2710 unsigned int len
= skb
->len
;
2711 unsigned int offset
= 0, size
, count
= 0, i
;
2713 len
-= skb
->data_len
;
2715 i
= tx_ring
->next_to_use
;
2718 buffer_info
= &tx_ring
->buffer_info
[i
];
2719 size
= min(len
, max_per_txd
);
2721 /* Workaround for Controller erratum --
2722 * descriptor for non-tso packet in a linear SKB that follows a
2723 * tso gets written back prematurely before the data is fully
2724 * DMA'd to the controller */
2725 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2727 tx_ring
->last_tx_tso
= 0;
2731 /* Workaround for premature desc write-backs
2732 * in TSO mode. Append 4-byte sentinel desc */
2733 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2736 /* work-around for errata 10 and it applies
2737 * to all controllers in PCI-X mode
2738 * The fix is to make sure that the first descriptor of a
2739 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2741 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2742 (size
> 2015) && count
== 0))
2745 /* Workaround for potential 82544 hang in PCI-X. Avoid
2746 * terminating buffers within evenly-aligned dwords. */
2747 if (unlikely(adapter
->pcix_82544
&&
2748 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2752 buffer_info
->length
= size
;
2754 pci_map_single(adapter
->pdev
,
2758 buffer_info
->time_stamp
= jiffies
;
2763 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2766 for (f
= 0; f
< nr_frags
; f
++) {
2767 struct skb_frag_struct
*frag
;
2769 frag
= &skb_shinfo(skb
)->frags
[f
];
2771 offset
= frag
->page_offset
;
2774 buffer_info
= &tx_ring
->buffer_info
[i
];
2775 size
= min(len
, max_per_txd
);
2777 /* Workaround for premature desc write-backs
2778 * in TSO mode. Append 4-byte sentinel desc */
2779 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2782 /* Workaround for potential 82544 hang in PCI-X.
2783 * Avoid terminating buffers within evenly-aligned
2785 if (unlikely(adapter
->pcix_82544
&&
2786 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2790 buffer_info
->length
= size
;
2792 pci_map_page(adapter
->pdev
,
2797 buffer_info
->time_stamp
= jiffies
;
2802 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2806 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2807 tx_ring
->buffer_info
[i
].skb
= skb
;
2808 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2814 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2815 int tx_flags
, int count
)
2817 struct e1000_tx_desc
*tx_desc
= NULL
;
2818 struct e1000_buffer
*buffer_info
;
2819 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2822 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2823 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2825 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2827 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2828 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2831 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2832 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2833 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2836 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2837 txd_lower
|= E1000_TXD_CMD_VLE
;
2838 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2841 i
= tx_ring
->next_to_use
;
2844 buffer_info
= &tx_ring
->buffer_info
[i
];
2845 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2846 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2847 tx_desc
->lower
.data
=
2848 cpu_to_le32(txd_lower
| buffer_info
->length
);
2849 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2850 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2853 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2855 /* Force memory writes to complete before letting h/w
2856 * know there are new descriptors to fetch. (Only
2857 * applicable for weak-ordered memory model archs,
2858 * such as IA-64). */
2861 tx_ring
->next_to_use
= i
;
2862 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2866 * 82547 workaround to avoid controller hang in half-duplex environment.
2867 * The workaround is to avoid queuing a large packet that would span
2868 * the internal Tx FIFO ring boundary by notifying the stack to resend
2869 * the packet at a later time. This gives the Tx FIFO an opportunity to
2870 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2871 * to the beginning of the Tx FIFO.
2874 #define E1000_FIFO_HDR 0x10
2875 #define E1000_82547_PAD_LEN 0x3E0
2878 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2880 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2881 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2883 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2885 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2886 goto no_fifo_stall_required
;
2888 if (atomic_read(&adapter
->tx_fifo_stall
))
2891 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2892 atomic_set(&adapter
->tx_fifo_stall
, 1);
2896 no_fifo_stall_required
:
2897 adapter
->tx_fifo_head
+= skb_fifo_len
;
2898 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2899 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2903 #define MINIMUM_DHCP_PACKET_SIZE 282
2905 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2907 struct e1000_hw
*hw
= &adapter
->hw
;
2908 uint16_t length
, offset
;
2909 if (vlan_tx_tag_present(skb
)) {
2910 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2911 ( adapter
->hw
.mng_cookie
.status
&
2912 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2915 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2916 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2917 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2918 const struct iphdr
*ip
=
2919 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2920 if (IPPROTO_UDP
== ip
->protocol
) {
2921 struct udphdr
*udp
=
2922 (struct udphdr
*)((uint8_t *)ip
+
2924 if (ntohs(udp
->dest
) == 67) {
2925 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2926 length
= skb
->len
- offset
;
2928 return e1000_mng_write_dhcp_info(hw
,
2938 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
2940 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2941 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
2943 netif_stop_queue(netdev
);
2944 /* Herbert's original patch had:
2945 * smp_mb__after_netif_stop_queue();
2946 * but since that doesn't exist yet, just open code it. */
2949 /* We need to check again in a case another CPU has just
2950 * made room available. */
2951 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
2955 netif_start_queue(netdev
);
2959 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
2960 struct e1000_tx_ring
*tx_ring
, int size
)
2962 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
2964 return __e1000_maybe_stop_tx(netdev
, size
);
2967 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2969 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2971 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2972 struct e1000_tx_ring
*tx_ring
;
2973 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2974 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2975 unsigned int tx_flags
= 0;
2976 unsigned int len
= skb
->len
;
2977 unsigned long flags
;
2978 unsigned int nr_frags
= 0;
2979 unsigned int mss
= 0;
2983 len
-= skb
->data_len
;
2985 /* This goes back to the question of how to logically map a tx queue
2986 * to a flow. Right now, performance is impacted slightly negatively
2987 * if using multiple tx queues. If the stack breaks away from a
2988 * single qdisc implementation, we can look at this again. */
2989 tx_ring
= adapter
->tx_ring
;
2991 if (unlikely(skb
->len
<= 0)) {
2992 dev_kfree_skb_any(skb
);
2993 return NETDEV_TX_OK
;
2996 /* 82571 and newer doesn't need the workaround that limited descriptor
2998 if (adapter
->hw
.mac_type
>= e1000_82571
)
3002 mss
= skb_shinfo(skb
)->gso_size
;
3003 /* The controller does a simple calculation to
3004 * make sure there is enough room in the FIFO before
3005 * initiating the DMA for each buffer. The calc is:
3006 * 4 = ceil(buffer len/mss). To make sure we don't
3007 * overrun the FIFO, adjust the max buffer len if mss
3011 max_per_txd
= min(mss
<< 2, max_per_txd
);
3012 max_txd_pwr
= fls(max_per_txd
) - 1;
3014 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3015 * points to just header, pull a few bytes of payload from
3016 * frags into skb->data */
3017 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3018 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3019 switch (adapter
->hw
.mac_type
) {
3020 unsigned int pull_size
;
3025 pull_size
= min((unsigned int)4, skb
->data_len
);
3026 if (!__pskb_pull_tail(skb
, pull_size
)) {
3028 "__pskb_pull_tail failed.\n");
3029 dev_kfree_skb_any(skb
);
3030 return NETDEV_TX_OK
;
3032 len
= skb
->len
- skb
->data_len
;
3041 /* reserve a descriptor for the offload context */
3042 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3046 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3051 /* Controller Erratum workaround */
3052 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3056 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3058 if (adapter
->pcix_82544
)
3061 /* work-around for errata 10 and it applies to all controllers
3062 * in PCI-X mode, so add one more descriptor to the count
3064 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3068 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3069 for (f
= 0; f
< nr_frags
; f
++)
3070 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3072 if (adapter
->pcix_82544
)
3076 if (adapter
->hw
.tx_pkt_filtering
&&
3077 (adapter
->hw
.mac_type
== e1000_82573
))
3078 e1000_transfer_dhcp_info(adapter
, skb
);
3080 local_irq_save(flags
);
3081 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3082 /* Collision - tell upper layer to requeue */
3083 local_irq_restore(flags
);
3084 return NETDEV_TX_LOCKED
;
3087 /* need: count + 2 desc gap to keep tail from touching
3088 * head, otherwise try next time */
3089 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3090 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3091 return NETDEV_TX_BUSY
;
3094 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3095 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3096 netif_stop_queue(netdev
);
3097 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3098 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3099 return NETDEV_TX_BUSY
;
3103 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3104 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3105 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3108 first
= tx_ring
->next_to_use
;
3110 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3112 dev_kfree_skb_any(skb
);
3113 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3114 return NETDEV_TX_OK
;
3118 tx_ring
->last_tx_tso
= 1;
3119 tx_flags
|= E1000_TX_FLAGS_TSO
;
3120 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3121 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3123 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3124 * 82571 hardware supports TSO capabilities for IPv6 as well...
3125 * no longer assume, we must. */
3126 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3127 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3129 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3130 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3131 max_per_txd
, nr_frags
, mss
));
3133 netdev
->trans_start
= jiffies
;
3135 /* Make sure there is space in the ring for the next send. */
3136 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3138 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3139 return NETDEV_TX_OK
;
3143 * e1000_tx_timeout - Respond to a Tx Hang
3144 * @netdev: network interface device structure
3148 e1000_tx_timeout(struct net_device
*netdev
)
3150 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3152 /* Do the reset outside of interrupt context */
3153 adapter
->tx_timeout_count
++;
3154 schedule_work(&adapter
->reset_task
);
3158 e1000_reset_task(struct net_device
*netdev
)
3160 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3162 e1000_reinit_locked(adapter
);
3166 * e1000_get_stats - Get System Network Statistics
3167 * @netdev: network interface device structure
3169 * Returns the address of the device statistics structure.
3170 * The statistics are actually updated from the timer callback.
3173 static struct net_device_stats
*
3174 e1000_get_stats(struct net_device
*netdev
)
3176 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3178 /* only return the current stats */
3179 return &adapter
->net_stats
;
3183 * e1000_change_mtu - Change the Maximum Transfer Unit
3184 * @netdev: network interface device structure
3185 * @new_mtu: new value for maximum frame size
3187 * Returns 0 on success, negative on failure
3191 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3193 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3194 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3195 uint16_t eeprom_data
= 0;
3197 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3198 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3199 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3203 /* Adapter-specific max frame size limits. */
3204 switch (adapter
->hw
.mac_type
) {
3205 case e1000_undefined
... e1000_82542_rev2_1
:
3207 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3208 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3213 /* Jumbo Frames not supported if:
3214 * - this is not an 82573L device
3215 * - ASPM is enabled in any way (0x1A bits 3:2) */
3216 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3218 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3219 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3220 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3222 "Jumbo Frames not supported.\n");
3227 /* ERT will be enabled later to enable wire speed receives */
3229 /* fall through to get support */
3232 case e1000_80003es2lan
:
3233 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3234 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3235 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3240 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3244 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3245 * means we reserve 2 more, this pushes us to allocate from the next
3247 * i.e. RXBUFFER_2048 --> size-4096 slab */
3249 if (max_frame
<= E1000_RXBUFFER_256
)
3250 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3251 else if (max_frame
<= E1000_RXBUFFER_512
)
3252 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3253 else if (max_frame
<= E1000_RXBUFFER_1024
)
3254 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3255 else if (max_frame
<= E1000_RXBUFFER_2048
)
3256 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3257 else if (max_frame
<= E1000_RXBUFFER_4096
)
3258 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3259 else if (max_frame
<= E1000_RXBUFFER_8192
)
3260 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3261 else if (max_frame
<= E1000_RXBUFFER_16384
)
3262 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3264 /* adjust allocation if LPE protects us, and we aren't using SBP */
3265 if (!adapter
->hw
.tbi_compatibility_on
&&
3266 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3267 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3268 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3270 netdev
->mtu
= new_mtu
;
3272 if (netif_running(netdev
))
3273 e1000_reinit_locked(adapter
);
3275 adapter
->hw
.max_frame_size
= max_frame
;
3281 * e1000_update_stats - Update the board statistics counters
3282 * @adapter: board private structure
3286 e1000_update_stats(struct e1000_adapter
*adapter
)
3288 struct e1000_hw
*hw
= &adapter
->hw
;
3289 struct pci_dev
*pdev
= adapter
->pdev
;
3290 unsigned long flags
;
3293 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3296 * Prevent stats update while adapter is being reset, or if the pci
3297 * connection is down.
3299 if (adapter
->link_speed
== 0)
3301 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3304 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3306 /* these counters are modified from e1000_adjust_tbi_stats,
3307 * called from the interrupt context, so they must only
3308 * be written while holding adapter->stats_lock
3311 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3312 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3313 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3314 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3315 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3316 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3317 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3319 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3320 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3321 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3322 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3323 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3324 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3325 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3328 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3329 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3330 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3331 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3332 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3333 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3334 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3335 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3336 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3337 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3338 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3339 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3340 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3341 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3342 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3343 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3344 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3345 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3346 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3347 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3348 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3349 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3350 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3351 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3352 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3353 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3355 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3356 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3357 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3358 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3359 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3360 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3361 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3364 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3365 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3367 /* used for adaptive IFS */
3369 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3370 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3371 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3372 adapter
->stats
.colc
+= hw
->collision_delta
;
3374 if (hw
->mac_type
>= e1000_82543
) {
3375 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3376 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3377 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3378 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3379 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3380 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3382 if (hw
->mac_type
> e1000_82547_rev_2
) {
3383 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3384 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3386 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3387 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3388 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3389 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3390 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3391 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3392 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3393 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3397 /* Fill out the OS statistics structure */
3398 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3399 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3400 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3401 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3402 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3403 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3407 /* RLEC on some newer hardware can be incorrect so build
3408 * our own version based on RUC and ROC */
3409 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3410 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3411 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3412 adapter
->stats
.cexterr
;
3413 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3414 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3415 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3416 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3417 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3420 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3421 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3422 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3423 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3424 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3426 /* Tx Dropped needs to be maintained elsewhere */
3429 if (hw
->media_type
== e1000_media_type_copper
) {
3430 if ((adapter
->link_speed
== SPEED_1000
) &&
3431 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3432 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3433 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3436 if ((hw
->mac_type
<= e1000_82546
) &&
3437 (hw
->phy_type
== e1000_phy_m88
) &&
3438 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3439 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3442 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3446 * e1000_intr - Interrupt Handler
3447 * @irq: interrupt number
3448 * @data: pointer to a network interface device structure
3452 e1000_intr(int irq
, void *data
)
3454 struct net_device
*netdev
= data
;
3455 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3456 struct e1000_hw
*hw
= &adapter
->hw
;
3457 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3458 #ifndef CONFIG_E1000_NAPI
3461 /* Interrupt Auto-Mask...upon reading ICR,
3462 * interrupts are masked. No need for the
3463 * IMC write, but it does mean we should
3464 * account for it ASAP. */
3465 if (likely(hw
->mac_type
>= e1000_82571
))
3466 atomic_inc(&adapter
->irq_sem
);
3469 if (unlikely(!icr
)) {
3470 #ifdef CONFIG_E1000_NAPI
3471 if (hw
->mac_type
>= e1000_82571
)
3472 e1000_irq_enable(adapter
);
3474 return IRQ_NONE
; /* Not our interrupt */
3477 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3478 hw
->get_link_status
= 1;
3479 /* 80003ES2LAN workaround--
3480 * For packet buffer work-around on link down event;
3481 * disable receives here in the ISR and
3482 * reset adapter in watchdog
3484 if (netif_carrier_ok(netdev
) &&
3485 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3486 /* disable receives */
3487 rctl
= E1000_READ_REG(hw
, RCTL
);
3488 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3490 /* guard against interrupt when we're going down */
3491 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3492 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3495 #ifdef CONFIG_E1000_NAPI
3496 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3497 atomic_inc(&adapter
->irq_sem
);
3498 E1000_WRITE_REG(hw
, IMC
, ~0);
3499 E1000_WRITE_FLUSH(hw
);
3501 if (likely(netif_rx_schedule_prep(netdev
)))
3502 __netif_rx_schedule(netdev
);
3504 /* this really should not happen! if it does it is basically a
3505 * bug, but not a hard error, so enable ints and continue */
3506 e1000_irq_enable(adapter
);
3508 /* Writing IMC and IMS is needed for 82547.
3509 * Due to Hub Link bus being occupied, an interrupt
3510 * de-assertion message is not able to be sent.
3511 * When an interrupt assertion message is generated later,
3512 * two messages are re-ordered and sent out.
3513 * That causes APIC to think 82547 is in de-assertion
3514 * state, while 82547 is in assertion state, resulting
3515 * in dead lock. Writing IMC forces 82547 into
3516 * de-assertion state.
3518 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3519 atomic_inc(&adapter
->irq_sem
);
3520 E1000_WRITE_REG(hw
, IMC
, ~0);
3523 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3524 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3525 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3528 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3529 e1000_irq_enable(adapter
);
3535 #ifdef CONFIG_E1000_NAPI
3537 * e1000_clean - NAPI Rx polling callback
3538 * @adapter: board private structure
3542 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3544 struct e1000_adapter
*adapter
;
3545 int work_to_do
= min(*budget
, poll_dev
->quota
);
3546 int tx_cleaned
= 0, work_done
= 0;
3548 /* Must NOT use netdev_priv macro here. */
3549 adapter
= poll_dev
->priv
;
3551 /* Keep link state information with original netdev */
3552 if (!netif_carrier_ok(poll_dev
))
3555 /* e1000_clean is called per-cpu. This lock protects
3556 * tx_ring[0] from being cleaned by multiple cpus
3557 * simultaneously. A failure obtaining the lock means
3558 * tx_ring[0] is currently being cleaned anyway. */
3559 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3560 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3561 &adapter
->tx_ring
[0]);
3562 spin_unlock(&adapter
->tx_queue_lock
);
3565 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3566 &work_done
, work_to_do
);
3568 *budget
-= work_done
;
3569 poll_dev
->quota
-= work_done
;
3571 /* If no Tx and not enough Rx work done, exit the polling mode */
3572 if ((!tx_cleaned
&& (work_done
== 0)) ||
3573 !netif_running(poll_dev
)) {
3575 netif_rx_complete(poll_dev
);
3576 e1000_irq_enable(adapter
);
3585 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3586 * @adapter: board private structure
3590 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3591 struct e1000_tx_ring
*tx_ring
)
3593 struct net_device
*netdev
= adapter
->netdev
;
3594 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3595 struct e1000_buffer
*buffer_info
;
3596 unsigned int i
, eop
;
3597 #ifdef CONFIG_E1000_NAPI
3598 unsigned int count
= 0;
3600 boolean_t cleaned
= FALSE
;
3602 i
= tx_ring
->next_to_clean
;
3603 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3604 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3606 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3607 for (cleaned
= FALSE
; !cleaned
; ) {
3608 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3609 buffer_info
= &tx_ring
->buffer_info
[i
];
3610 cleaned
= (i
== eop
);
3612 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3613 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3615 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3618 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3619 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3620 #ifdef CONFIG_E1000_NAPI
3621 #define E1000_TX_WEIGHT 64
3622 /* weight of a sort for tx, to avoid endless transmit cleanup */
3623 if (count
++ == E1000_TX_WEIGHT
) break;
3627 tx_ring
->next_to_clean
= i
;
3629 #define TX_WAKE_THRESHOLD 32
3630 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3631 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3632 /* Make sure that anybody stopping the queue after this
3633 * sees the new next_to_clean.
3636 if (netif_queue_stopped(netdev
))
3637 netif_wake_queue(netdev
);
3640 if (adapter
->detect_tx_hung
) {
3641 /* Detect a transmit hang in hardware, this serializes the
3642 * check with the clearing of time_stamp and movement of i */
3643 adapter
->detect_tx_hung
= FALSE
;
3644 if (tx_ring
->buffer_info
[eop
].dma
&&
3645 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3646 (adapter
->tx_timeout_factor
* HZ
))
3647 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3648 E1000_STATUS_TXOFF
)) {
3650 /* detected Tx unit hang */
3651 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3655 " next_to_use <%x>\n"
3656 " next_to_clean <%x>\n"
3657 "buffer_info[next_to_clean]\n"
3658 " time_stamp <%lx>\n"
3659 " next_to_watch <%x>\n"
3661 " next_to_watch.status <%x>\n",
3662 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3663 sizeof(struct e1000_tx_ring
)),
3664 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3665 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3666 tx_ring
->next_to_use
,
3667 tx_ring
->next_to_clean
,
3668 tx_ring
->buffer_info
[eop
].time_stamp
,
3671 eop_desc
->upper
.fields
.status
);
3672 netif_stop_queue(netdev
);
3679 * e1000_rx_checksum - Receive Checksum Offload for 82543
3680 * @adapter: board private structure
3681 * @status_err: receive descriptor status and error fields
3682 * @csum: receive descriptor csum field
3683 * @sk_buff: socket buffer with received data
3687 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3688 uint32_t status_err
, uint32_t csum
,
3689 struct sk_buff
*skb
)
3691 uint16_t status
= (uint16_t)status_err
;
3692 uint8_t errors
= (uint8_t)(status_err
>> 24);
3693 skb
->ip_summed
= CHECKSUM_NONE
;
3695 /* 82543 or newer only */
3696 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3697 /* Ignore Checksum bit is set */
3698 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3699 /* TCP/UDP checksum error bit is set */
3700 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3701 /* let the stack verify checksum errors */
3702 adapter
->hw_csum_err
++;
3705 /* TCP/UDP Checksum has not been calculated */
3706 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3707 if (!(status
& E1000_RXD_STAT_TCPCS
))
3710 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3713 /* It must be a TCP or UDP packet with a valid checksum */
3714 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3715 /* TCP checksum is good */
3716 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3717 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3718 /* IP fragment with UDP payload */
3719 /* Hardware complements the payload checksum, so we undo it
3720 * and then put the value in host order for further stack use.
3722 csum
= ntohl(csum
^ 0xFFFF);
3724 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3726 adapter
->hw_csum_good
++;
3730 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3731 * @adapter: board private structure
3735 #ifdef CONFIG_E1000_NAPI
3736 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3737 struct e1000_rx_ring
*rx_ring
,
3738 int *work_done
, int work_to_do
)
3740 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3741 struct e1000_rx_ring
*rx_ring
)
3744 struct net_device
*netdev
= adapter
->netdev
;
3745 struct pci_dev
*pdev
= adapter
->pdev
;
3746 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3747 struct e1000_buffer
*buffer_info
, *next_buffer
;
3748 unsigned long flags
;
3752 int cleaned_count
= 0;
3753 boolean_t cleaned
= FALSE
;
3755 i
= rx_ring
->next_to_clean
;
3756 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3757 buffer_info
= &rx_ring
->buffer_info
[i
];
3759 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3760 struct sk_buff
*skb
;
3763 #ifdef CONFIG_E1000_NAPI
3764 if (*work_done
>= work_to_do
)
3768 status
= rx_desc
->status
;
3769 skb
= buffer_info
->skb
;
3770 buffer_info
->skb
= NULL
;
3772 prefetch(skb
->data
- NET_IP_ALIGN
);
3774 if (++i
== rx_ring
->count
) i
= 0;
3775 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3778 next_buffer
= &rx_ring
->buffer_info
[i
];
3782 pci_unmap_single(pdev
,
3784 buffer_info
->length
,
3785 PCI_DMA_FROMDEVICE
);
3787 length
= le16_to_cpu(rx_desc
->length
);
3789 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3790 /* All receives must fit into a single buffer */
3791 E1000_DBG("%s: Receive packet consumed multiple"
3792 " buffers\n", netdev
->name
);
3794 buffer_info
->skb
= skb
;
3798 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3799 last_byte
= *(skb
->data
+ length
- 1);
3800 if (TBI_ACCEPT(&adapter
->hw
, status
,
3801 rx_desc
->errors
, length
, last_byte
)) {
3802 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3803 e1000_tbi_adjust_stats(&adapter
->hw
,
3806 spin_unlock_irqrestore(&adapter
->stats_lock
,
3811 buffer_info
->skb
= skb
;
3816 /* adjust length to remove Ethernet CRC, this must be
3817 * done after the TBI_ACCEPT workaround above */
3820 /* code added for copybreak, this should improve
3821 * performance for small packets with large amounts
3822 * of reassembly being done in the stack */
3823 #define E1000_CB_LENGTH 256
3824 if (length
< E1000_CB_LENGTH
) {
3825 struct sk_buff
*new_skb
=
3826 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
3828 skb_reserve(new_skb
, NET_IP_ALIGN
);
3829 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3830 skb
->data
- NET_IP_ALIGN
,
3831 length
+ NET_IP_ALIGN
);
3832 /* save the skb in buffer_info as good */
3833 buffer_info
->skb
= skb
;
3835 skb_put(skb
, length
);
3838 skb_put(skb
, length
);
3840 /* end copybreak code */
3842 /* Receive Checksum Offload */
3843 e1000_rx_checksum(adapter
,
3844 (uint32_t)(status
) |
3845 ((uint32_t)(rx_desc
->errors
) << 24),
3846 le16_to_cpu(rx_desc
->csum
), skb
);
3848 skb
->protocol
= eth_type_trans(skb
, netdev
);
3849 #ifdef CONFIG_E1000_NAPI
3850 if (unlikely(adapter
->vlgrp
&&
3851 (status
& E1000_RXD_STAT_VP
))) {
3852 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3853 le16_to_cpu(rx_desc
->special
) &
3854 E1000_RXD_SPC_VLAN_MASK
);
3856 netif_receive_skb(skb
);
3858 #else /* CONFIG_E1000_NAPI */
3859 if (unlikely(adapter
->vlgrp
&&
3860 (status
& E1000_RXD_STAT_VP
))) {
3861 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3862 le16_to_cpu(rx_desc
->special
) &
3863 E1000_RXD_SPC_VLAN_MASK
);
3867 #endif /* CONFIG_E1000_NAPI */
3868 netdev
->last_rx
= jiffies
;
3871 rx_desc
->status
= 0;
3873 /* return some buffers to hardware, one at a time is too slow */
3874 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3875 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3879 /* use prefetched values */
3881 buffer_info
= next_buffer
;
3883 rx_ring
->next_to_clean
= i
;
3885 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3887 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3893 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3894 * @adapter: board private structure
3898 #ifdef CONFIG_E1000_NAPI
3899 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3900 struct e1000_rx_ring
*rx_ring
,
3901 int *work_done
, int work_to_do
)
3903 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3904 struct e1000_rx_ring
*rx_ring
)
3907 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3908 struct net_device
*netdev
= adapter
->netdev
;
3909 struct pci_dev
*pdev
= adapter
->pdev
;
3910 struct e1000_buffer
*buffer_info
, *next_buffer
;
3911 struct e1000_ps_page
*ps_page
;
3912 struct e1000_ps_page_dma
*ps_page_dma
;
3913 struct sk_buff
*skb
;
3915 uint32_t length
, staterr
;
3916 int cleaned_count
= 0;
3917 boolean_t cleaned
= FALSE
;
3919 i
= rx_ring
->next_to_clean
;
3920 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3921 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3922 buffer_info
= &rx_ring
->buffer_info
[i
];
3924 while (staterr
& E1000_RXD_STAT_DD
) {
3925 ps_page
= &rx_ring
->ps_page
[i
];
3926 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3927 #ifdef CONFIG_E1000_NAPI
3928 if (unlikely(*work_done
>= work_to_do
))
3932 skb
= buffer_info
->skb
;
3934 /* in the packet split case this is header only */
3935 prefetch(skb
->data
- NET_IP_ALIGN
);
3937 if (++i
== rx_ring
->count
) i
= 0;
3938 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3941 next_buffer
= &rx_ring
->buffer_info
[i
];
3945 pci_unmap_single(pdev
, buffer_info
->dma
,
3946 buffer_info
->length
,
3947 PCI_DMA_FROMDEVICE
);
3949 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3950 E1000_DBG("%s: Packet Split buffers didn't pick up"
3951 " the full packet\n", netdev
->name
);
3952 dev_kfree_skb_irq(skb
);
3956 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3957 dev_kfree_skb_irq(skb
);
3961 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3963 if (unlikely(!length
)) {
3964 E1000_DBG("%s: Last part of the packet spanning"
3965 " multiple descriptors\n", netdev
->name
);
3966 dev_kfree_skb_irq(skb
);
3971 skb_put(skb
, length
);
3974 /* this looks ugly, but it seems compiler issues make it
3975 more efficient than reusing j */
3976 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3978 /* page alloc/put takes too long and effects small packet
3979 * throughput, so unsplit small packets and save the alloc/put*/
3980 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3982 /* there is no documentation about how to call
3983 * kmap_atomic, so we can't hold the mapping
3985 pci_dma_sync_single_for_cpu(pdev
,
3986 ps_page_dma
->ps_page_dma
[0],
3988 PCI_DMA_FROMDEVICE
);
3989 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3990 KM_SKB_DATA_SOFTIRQ
);
3991 memcpy(skb
->tail
, vaddr
, l1
);
3992 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3993 pci_dma_sync_single_for_device(pdev
,
3994 ps_page_dma
->ps_page_dma
[0],
3995 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3996 /* remove the CRC */
4003 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4004 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4006 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4007 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4008 ps_page_dma
->ps_page_dma
[j
] = 0;
4009 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4011 ps_page
->ps_page
[j
] = NULL
;
4013 skb
->data_len
+= length
;
4014 skb
->truesize
+= length
;
4017 /* strip the ethernet crc, problem is we're using pages now so
4018 * this whole operation can get a little cpu intensive */
4019 pskb_trim(skb
, skb
->len
- 4);
4022 e1000_rx_checksum(adapter
, staterr
,
4023 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4024 skb
->protocol
= eth_type_trans(skb
, netdev
);
4026 if (likely(rx_desc
->wb
.upper
.header_status
&
4027 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4028 adapter
->rx_hdr_split
++;
4029 #ifdef CONFIG_E1000_NAPI
4030 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4031 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4032 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4033 E1000_RXD_SPC_VLAN_MASK
);
4035 netif_receive_skb(skb
);
4037 #else /* CONFIG_E1000_NAPI */
4038 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4039 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4040 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4041 E1000_RXD_SPC_VLAN_MASK
);
4045 #endif /* CONFIG_E1000_NAPI */
4046 netdev
->last_rx
= jiffies
;
4049 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4050 buffer_info
->skb
= NULL
;
4052 /* return some buffers to hardware, one at a time is too slow */
4053 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4054 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4058 /* use prefetched values */
4060 buffer_info
= next_buffer
;
4062 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4064 rx_ring
->next_to_clean
= i
;
4066 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4068 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4074 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4075 * @adapter: address of board private structure
4079 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4080 struct e1000_rx_ring
*rx_ring
,
4083 struct net_device
*netdev
= adapter
->netdev
;
4084 struct pci_dev
*pdev
= adapter
->pdev
;
4085 struct e1000_rx_desc
*rx_desc
;
4086 struct e1000_buffer
*buffer_info
;
4087 struct sk_buff
*skb
;
4089 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4091 i
= rx_ring
->next_to_use
;
4092 buffer_info
= &rx_ring
->buffer_info
[i
];
4094 while (cleaned_count
--) {
4095 skb
= buffer_info
->skb
;
4101 skb
= netdev_alloc_skb(netdev
, bufsz
);
4102 if (unlikely(!skb
)) {
4103 /* Better luck next round */
4104 adapter
->alloc_rx_buff_failed
++;
4108 /* Fix for errata 23, can't cross 64kB boundary */
4109 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4110 struct sk_buff
*oldskb
= skb
;
4111 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4112 "at %p\n", bufsz
, skb
->data
);
4113 /* Try again, without freeing the previous */
4114 skb
= netdev_alloc_skb(netdev
, bufsz
);
4115 /* Failed allocation, critical failure */
4117 dev_kfree_skb(oldskb
);
4121 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4124 dev_kfree_skb(oldskb
);
4125 break; /* while !buffer_info->skb */
4128 /* Use new allocation */
4129 dev_kfree_skb(oldskb
);
4131 /* Make buffer alignment 2 beyond a 16 byte boundary
4132 * this will result in a 16 byte aligned IP header after
4133 * the 14 byte MAC header is removed
4135 skb_reserve(skb
, NET_IP_ALIGN
);
4137 buffer_info
->skb
= skb
;
4138 buffer_info
->length
= adapter
->rx_buffer_len
;
4140 buffer_info
->dma
= pci_map_single(pdev
,
4142 adapter
->rx_buffer_len
,
4143 PCI_DMA_FROMDEVICE
);
4145 /* Fix for errata 23, can't cross 64kB boundary */
4146 if (!e1000_check_64k_bound(adapter
,
4147 (void *)(unsigned long)buffer_info
->dma
,
4148 adapter
->rx_buffer_len
)) {
4149 DPRINTK(RX_ERR
, ERR
,
4150 "dma align check failed: %u bytes at %p\n",
4151 adapter
->rx_buffer_len
,
4152 (void *)(unsigned long)buffer_info
->dma
);
4154 buffer_info
->skb
= NULL
;
4156 pci_unmap_single(pdev
, buffer_info
->dma
,
4157 adapter
->rx_buffer_len
,
4158 PCI_DMA_FROMDEVICE
);
4160 break; /* while !buffer_info->skb */
4162 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4163 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4165 if (unlikely(++i
== rx_ring
->count
))
4167 buffer_info
= &rx_ring
->buffer_info
[i
];
4170 if (likely(rx_ring
->next_to_use
!= i
)) {
4171 rx_ring
->next_to_use
= i
;
4172 if (unlikely(i
-- == 0))
4173 i
= (rx_ring
->count
- 1);
4175 /* Force memory writes to complete before letting h/w
4176 * know there are new descriptors to fetch. (Only
4177 * applicable for weak-ordered memory model archs,
4178 * such as IA-64). */
4180 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4185 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4186 * @adapter: address of board private structure
4190 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4191 struct e1000_rx_ring
*rx_ring
,
4194 struct net_device
*netdev
= adapter
->netdev
;
4195 struct pci_dev
*pdev
= adapter
->pdev
;
4196 union e1000_rx_desc_packet_split
*rx_desc
;
4197 struct e1000_buffer
*buffer_info
;
4198 struct e1000_ps_page
*ps_page
;
4199 struct e1000_ps_page_dma
*ps_page_dma
;
4200 struct sk_buff
*skb
;
4203 i
= rx_ring
->next_to_use
;
4204 buffer_info
= &rx_ring
->buffer_info
[i
];
4205 ps_page
= &rx_ring
->ps_page
[i
];
4206 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4208 while (cleaned_count
--) {
4209 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4211 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4212 if (j
< adapter
->rx_ps_pages
) {
4213 if (likely(!ps_page
->ps_page
[j
])) {
4214 ps_page
->ps_page
[j
] =
4215 alloc_page(GFP_ATOMIC
);
4216 if (unlikely(!ps_page
->ps_page
[j
])) {
4217 adapter
->alloc_rx_buff_failed
++;
4220 ps_page_dma
->ps_page_dma
[j
] =
4222 ps_page
->ps_page
[j
],
4224 PCI_DMA_FROMDEVICE
);
4226 /* Refresh the desc even if buffer_addrs didn't
4227 * change because each write-back erases
4230 rx_desc
->read
.buffer_addr
[j
+1] =
4231 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4233 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4236 skb
= netdev_alloc_skb(netdev
,
4237 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4239 if (unlikely(!skb
)) {
4240 adapter
->alloc_rx_buff_failed
++;
4244 /* Make buffer alignment 2 beyond a 16 byte boundary
4245 * this will result in a 16 byte aligned IP header after
4246 * the 14 byte MAC header is removed
4248 skb_reserve(skb
, NET_IP_ALIGN
);
4250 buffer_info
->skb
= skb
;
4251 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4252 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4253 adapter
->rx_ps_bsize0
,
4254 PCI_DMA_FROMDEVICE
);
4256 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4258 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4259 buffer_info
= &rx_ring
->buffer_info
[i
];
4260 ps_page
= &rx_ring
->ps_page
[i
];
4261 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4265 if (likely(rx_ring
->next_to_use
!= i
)) {
4266 rx_ring
->next_to_use
= i
;
4267 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4269 /* Force memory writes to complete before letting h/w
4270 * know there are new descriptors to fetch. (Only
4271 * applicable for weak-ordered memory model archs,
4272 * such as IA-64). */
4274 /* Hardware increments by 16 bytes, but packet split
4275 * descriptors are 32 bytes...so we increment tail
4278 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4283 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4288 e1000_smartspeed(struct e1000_adapter
*adapter
)
4290 uint16_t phy_status
;
4293 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4294 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4297 if (adapter
->smartspeed
== 0) {
4298 /* If Master/Slave config fault is asserted twice,
4299 * we assume back-to-back */
4300 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4301 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4302 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4303 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4304 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4305 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4306 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4307 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4309 adapter
->smartspeed
++;
4310 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4311 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4313 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4314 MII_CR_RESTART_AUTO_NEG
);
4315 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4320 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4321 /* If still no link, perhaps using 2/3 pair cable */
4322 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4323 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4324 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4325 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4326 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4327 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4328 MII_CR_RESTART_AUTO_NEG
);
4329 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4332 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4333 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4334 adapter
->smartspeed
= 0;
4345 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4351 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4365 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4367 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4368 struct mii_ioctl_data
*data
= if_mii(ifr
);
4372 unsigned long flags
;
4374 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4379 data
->phy_id
= adapter
->hw
.phy_addr
;
4382 if (!capable(CAP_NET_ADMIN
))
4384 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4385 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4387 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4390 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4393 if (!capable(CAP_NET_ADMIN
))
4395 if (data
->reg_num
& ~(0x1F))
4397 mii_reg
= data
->val_in
;
4398 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4399 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4401 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4404 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4405 switch (data
->reg_num
) {
4407 if (mii_reg
& MII_CR_POWER_DOWN
)
4409 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4410 adapter
->hw
.autoneg
= 1;
4411 adapter
->hw
.autoneg_advertised
= 0x2F;
4414 spddplx
= SPEED_1000
;
4415 else if (mii_reg
& 0x2000)
4416 spddplx
= SPEED_100
;
4419 spddplx
+= (mii_reg
& 0x100)
4422 retval
= e1000_set_spd_dplx(adapter
,
4425 spin_unlock_irqrestore(
4426 &adapter
->stats_lock
,
4431 if (netif_running(adapter
->netdev
))
4432 e1000_reinit_locked(adapter
);
4434 e1000_reset(adapter
);
4436 case M88E1000_PHY_SPEC_CTRL
:
4437 case M88E1000_EXT_PHY_SPEC_CTRL
:
4438 if (e1000_phy_reset(&adapter
->hw
)) {
4439 spin_unlock_irqrestore(
4440 &adapter
->stats_lock
, flags
);
4446 switch (data
->reg_num
) {
4448 if (mii_reg
& MII_CR_POWER_DOWN
)
4450 if (netif_running(adapter
->netdev
))
4451 e1000_reinit_locked(adapter
);
4453 e1000_reset(adapter
);
4457 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4462 return E1000_SUCCESS
;
4466 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4468 struct e1000_adapter
*adapter
= hw
->back
;
4469 int ret_val
= pci_set_mwi(adapter
->pdev
);
4472 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4476 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4478 struct e1000_adapter
*adapter
= hw
->back
;
4480 pci_clear_mwi(adapter
->pdev
);
4484 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4486 struct e1000_adapter
*adapter
= hw
->back
;
4488 pci_read_config_word(adapter
->pdev
, reg
, value
);
4492 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4494 struct e1000_adapter
*adapter
= hw
->back
;
4496 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4500 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4502 struct e1000_adapter
*adapter
= hw
->back
;
4503 uint16_t cap_offset
;
4505 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4507 return -E1000_ERR_CONFIG
;
4509 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4511 return E1000_SUCCESS
;
4515 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4521 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4523 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4524 uint32_t ctrl
, rctl
;
4526 e1000_irq_disable(adapter
);
4527 adapter
->vlgrp
= grp
;
4530 /* enable VLAN tag insert/strip */
4531 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4532 ctrl
|= E1000_CTRL_VME
;
4533 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4535 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4536 /* enable VLAN receive filtering */
4537 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4538 rctl
|= E1000_RCTL_VFE
;
4539 rctl
&= ~E1000_RCTL_CFIEN
;
4540 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4541 e1000_update_mng_vlan(adapter
);
4544 /* disable VLAN tag insert/strip */
4545 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4546 ctrl
&= ~E1000_CTRL_VME
;
4547 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4549 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4550 /* disable VLAN filtering */
4551 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4552 rctl
&= ~E1000_RCTL_VFE
;
4553 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4554 if (adapter
->mng_vlan_id
!=
4555 (uint16_t)E1000_MNG_VLAN_NONE
) {
4556 e1000_vlan_rx_kill_vid(netdev
,
4557 adapter
->mng_vlan_id
);
4558 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4563 e1000_irq_enable(adapter
);
4567 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4569 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4570 uint32_t vfta
, index
;
4572 if ((adapter
->hw
.mng_cookie
.status
&
4573 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4574 (vid
== adapter
->mng_vlan_id
))
4576 /* add VID to filter table */
4577 index
= (vid
>> 5) & 0x7F;
4578 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4579 vfta
|= (1 << (vid
& 0x1F));
4580 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4584 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4586 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4587 uint32_t vfta
, index
;
4589 e1000_irq_disable(adapter
);
4592 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4594 e1000_irq_enable(adapter
);
4596 if ((adapter
->hw
.mng_cookie
.status
&
4597 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4598 (vid
== adapter
->mng_vlan_id
)) {
4599 /* release control to f/w */
4600 e1000_release_hw_control(adapter
);
4604 /* remove VID from filter table */
4605 index
= (vid
>> 5) & 0x7F;
4606 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4607 vfta
&= ~(1 << (vid
& 0x1F));
4608 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4612 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4614 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4616 if (adapter
->vlgrp
) {
4618 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4619 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4621 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4627 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4629 adapter
->hw
.autoneg
= 0;
4631 /* Fiber NICs only allow 1000 gbps Full duplex */
4632 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4633 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4634 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4639 case SPEED_10
+ DUPLEX_HALF
:
4640 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4642 case SPEED_10
+ DUPLEX_FULL
:
4643 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4645 case SPEED_100
+ DUPLEX_HALF
:
4646 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4648 case SPEED_100
+ DUPLEX_FULL
:
4649 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4651 case SPEED_1000
+ DUPLEX_FULL
:
4652 adapter
->hw
.autoneg
= 1;
4653 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4655 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4657 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4664 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4665 * bus we're on (PCI(X) vs. PCI-E)
4667 #define PCIE_CONFIG_SPACE_LEN 256
4668 #define PCI_CONFIG_SPACE_LEN 64
4670 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4672 struct pci_dev
*dev
= adapter
->pdev
;
4676 if (adapter
->hw
.mac_type
>= e1000_82571
)
4677 size
= PCIE_CONFIG_SPACE_LEN
;
4679 size
= PCI_CONFIG_SPACE_LEN
;
4681 WARN_ON(adapter
->config_space
!= NULL
);
4683 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4684 if (!adapter
->config_space
) {
4685 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4688 for (i
= 0; i
< (size
/ 4); i
++)
4689 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4694 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4696 struct pci_dev
*dev
= adapter
->pdev
;
4700 if (adapter
->config_space
== NULL
)
4703 if (adapter
->hw
.mac_type
>= e1000_82571
)
4704 size
= PCIE_CONFIG_SPACE_LEN
;
4706 size
= PCI_CONFIG_SPACE_LEN
;
4707 for (i
= 0; i
< (size
/ 4); i
++)
4708 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4709 kfree(adapter
->config_space
);
4710 adapter
->config_space
= NULL
;
4713 #endif /* CONFIG_PM */
4716 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4718 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4719 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4720 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4721 uint32_t wufc
= adapter
->wol
;
4726 netif_device_detach(netdev
);
4728 if (netif_running(netdev
)) {
4729 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4730 e1000_down(adapter
);
4734 /* Implement our own version of pci_save_state(pdev) because pci-
4735 * express adapters have 256-byte config spaces. */
4736 retval
= e1000_pci_save_state(adapter
);
4741 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4742 if (status
& E1000_STATUS_LU
)
4743 wufc
&= ~E1000_WUFC_LNKC
;
4746 e1000_setup_rctl(adapter
);
4747 e1000_set_multi(netdev
);
4749 /* turn on all-multi mode if wake on multicast is enabled */
4750 if (wufc
& E1000_WUFC_MC
) {
4751 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4752 rctl
|= E1000_RCTL_MPE
;
4753 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4756 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4757 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4758 /* advertise wake from D3Cold */
4759 #define E1000_CTRL_ADVD3WUC 0x00100000
4760 /* phy power management enable */
4761 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4762 ctrl
|= E1000_CTRL_ADVD3WUC
|
4763 E1000_CTRL_EN_PHY_PWR_MGMT
;
4764 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4767 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4768 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4769 /* keep the laser running in D3 */
4770 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4771 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4772 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4775 /* Allow time for pending master requests to run */
4776 e1000_disable_pciex_master(&adapter
->hw
);
4778 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4779 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4780 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4781 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4783 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4784 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4785 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4786 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4789 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4790 adapter
->hw
.mac_type
< e1000_82571
&&
4791 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4792 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4793 if (manc
& E1000_MANC_SMBUS_EN
) {
4794 manc
|= E1000_MANC_ARP_EN
;
4795 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4796 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4797 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4801 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
4802 e1000_phy_powerdown_workaround(&adapter
->hw
);
4804 if (netif_running(netdev
))
4805 e1000_free_irq(adapter
);
4807 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4808 * would have already happened in close and is redundant. */
4809 e1000_release_hw_control(adapter
);
4811 pci_disable_device(pdev
);
4813 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4820 e1000_resume(struct pci_dev
*pdev
)
4822 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4823 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4826 pci_set_power_state(pdev
, PCI_D0
);
4827 e1000_pci_restore_state(adapter
);
4828 if ((err
= pci_enable_device(pdev
))) {
4829 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4832 pci_set_master(pdev
);
4834 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4835 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4837 if (netif_running(netdev
) && (err
= e1000_request_irq(adapter
)))
4840 e1000_power_up_phy(adapter
);
4841 e1000_reset(adapter
);
4842 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4844 if (netif_running(netdev
))
4847 netif_device_attach(netdev
);
4849 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4850 adapter
->hw
.mac_type
< e1000_82571
&&
4851 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4852 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4853 manc
&= ~(E1000_MANC_ARP_EN
);
4854 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4857 /* If the controller is 82573 and f/w is AMT, do not set
4858 * DRV_LOAD until the interface is up. For all other cases,
4859 * let the f/w know that the h/w is now under the control
4861 if (adapter
->hw
.mac_type
!= e1000_82573
||
4862 !e1000_check_mng_mode(&adapter
->hw
))
4863 e1000_get_hw_control(adapter
);
4869 static void e1000_shutdown(struct pci_dev
*pdev
)
4871 e1000_suspend(pdev
, PMSG_SUSPEND
);
4874 #ifdef CONFIG_NET_POLL_CONTROLLER
4876 * Polling 'interrupt' - used by things like netconsole to send skbs
4877 * without having to re-enable interrupts. It's not called while
4878 * the interrupt routine is executing.
4881 e1000_netpoll(struct net_device
*netdev
)
4883 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4885 disable_irq(adapter
->pdev
->irq
);
4886 e1000_intr(adapter
->pdev
->irq
, netdev
);
4887 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4888 #ifndef CONFIG_E1000_NAPI
4889 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4891 enable_irq(adapter
->pdev
->irq
);
4896 * e1000_io_error_detected - called when PCI error is detected
4897 * @pdev: Pointer to PCI device
4898 * @state: The current pci conneection state
4900 * This function is called after a PCI bus error affecting
4901 * this device has been detected.
4903 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4905 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4906 struct e1000_adapter
*adapter
= netdev
->priv
;
4908 netif_device_detach(netdev
);
4910 if (netif_running(netdev
))
4911 e1000_down(adapter
);
4912 pci_disable_device(pdev
);
4914 /* Request a slot slot reset. */
4915 return PCI_ERS_RESULT_NEED_RESET
;
4919 * e1000_io_slot_reset - called after the pci bus has been reset.
4920 * @pdev: Pointer to PCI device
4922 * Restart the card from scratch, as if from a cold-boot. Implementation
4923 * resembles the first-half of the e1000_resume routine.
4925 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4927 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4928 struct e1000_adapter
*adapter
= netdev
->priv
;
4930 if (pci_enable_device(pdev
)) {
4931 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4932 return PCI_ERS_RESULT_DISCONNECT
;
4934 pci_set_master(pdev
);
4936 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4937 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4939 e1000_reset(adapter
);
4940 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4942 return PCI_ERS_RESULT_RECOVERED
;
4946 * e1000_io_resume - called when traffic can start flowing again.
4947 * @pdev: Pointer to PCI device
4949 * This callback is called when the error recovery driver tells us that
4950 * its OK to resume normal operation. Implementation resembles the
4951 * second-half of the e1000_resume routine.
4953 static void e1000_io_resume(struct pci_dev
*pdev
)
4955 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4956 struct e1000_adapter
*adapter
= netdev
->priv
;
4957 uint32_t manc
, swsm
;
4959 if (netif_running(netdev
)) {
4960 if (e1000_up(adapter
)) {
4961 printk("e1000: can't bring device back up after reset\n");
4966 netif_device_attach(netdev
);
4968 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4969 adapter
->hw
.mac_type
< e1000_82571
&&
4970 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4971 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4972 manc
&= ~(E1000_MANC_ARP_EN
);
4973 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4976 switch (adapter
->hw
.mac_type
) {
4978 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4979 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4980 swsm
| E1000_SWSM_DRV_LOAD
);
4986 if (netif_running(netdev
))
4987 mod_timer(&adapter
->watchdog_timer
, jiffies
);