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-k2"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 netowrk 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 netowrk i/f is open.
424 e1000_get_hw_control(struct e1000_adapter
*adapter
)
429 /* Let firmware know the driver has taken over */
430 switch (adapter
->hw
.mac_type
) {
433 case e1000_80003es2lan
:
434 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
435 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
436 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
439 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
440 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
441 swsm
| E1000_SWSM_DRV_LOAD
);
444 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
445 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
446 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
454 e1000_up(struct e1000_adapter
*adapter
)
456 struct net_device
*netdev
= adapter
->netdev
;
459 /* hardware has been reset, we need to reload some things */
461 e1000_set_multi(netdev
);
463 e1000_restore_vlan(adapter
);
465 e1000_configure_tx(adapter
);
466 e1000_setup_rctl(adapter
);
467 e1000_configure_rx(adapter
);
468 /* call E1000_DESC_UNUSED which always leaves
469 * at least 1 descriptor unused to make sure
470 * next_to_use != next_to_clean */
471 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
472 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
473 adapter
->alloc_rx_buf(adapter
, ring
,
474 E1000_DESC_UNUSED(ring
));
477 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
479 #ifdef CONFIG_E1000_NAPI
480 netif_poll_enable(netdev
);
482 e1000_irq_enable(adapter
);
484 clear_bit(__E1000_DOWN
, &adapter
->flags
);
486 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
491 * e1000_power_up_phy - restore link in case the phy was powered down
492 * @adapter: address of board private structure
494 * The phy may be powered down to save power and turn off link when the
495 * driver is unloaded and wake on lan is not enabled (among others)
496 * *** this routine MUST be followed by a call to e1000_reset ***
500 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
502 uint16_t mii_reg
= 0;
504 /* Just clear the power down bit to wake the phy back up */
505 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
506 /* according to the manual, the phy will retain its
507 * settings across a power-down/up cycle */
508 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
509 mii_reg
&= ~MII_CR_POWER_DOWN
;
510 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
514 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
516 /* Power down the PHY so no link is implied when interface is down *
517 * The PHY cannot be powered down if any of the following is TRUE *
520 * (c) SoL/IDER session is active */
521 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
522 adapter
->hw
.media_type
== e1000_media_type_copper
) {
523 uint16_t mii_reg
= 0;
525 switch (adapter
->hw
.mac_type
) {
528 case e1000_82545_rev_3
:
530 case e1000_82546_rev_3
:
532 case e1000_82541_rev_2
:
534 case e1000_82547_rev_2
:
535 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
542 case e1000_80003es2lan
:
544 if (e1000_check_mng_mode(&adapter
->hw
) ||
545 e1000_check_phy_reset_block(&adapter
->hw
))
551 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
552 mii_reg
|= MII_CR_POWER_DOWN
;
553 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
561 e1000_down(struct e1000_adapter
*adapter
)
563 struct net_device
*netdev
= adapter
->netdev
;
565 /* signal that we're down so the interrupt handler does not
566 * reschedule our watchdog timer */
567 set_bit(__E1000_DOWN
, &adapter
->flags
);
569 e1000_irq_disable(adapter
);
571 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
572 del_timer_sync(&adapter
->watchdog_timer
);
573 del_timer_sync(&adapter
->phy_info_timer
);
575 #ifdef CONFIG_E1000_NAPI
576 netif_poll_disable(netdev
);
578 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
579 adapter
->link_speed
= 0;
580 adapter
->link_duplex
= 0;
581 netif_carrier_off(netdev
);
582 netif_stop_queue(netdev
);
584 e1000_reset(adapter
);
585 e1000_clean_all_tx_rings(adapter
);
586 e1000_clean_all_rx_rings(adapter
);
590 e1000_reinit_locked(struct e1000_adapter
*adapter
)
592 WARN_ON(in_interrupt());
593 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
597 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
601 e1000_reset(struct e1000_adapter
*adapter
)
607 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
609 /* Repartition Pba for greater than 9k mtu
610 * To take effect CTRL.RST is required.
613 switch (adapter
->hw
.mac_type
) {
615 case e1000_82547_rev_2
:
620 case e1000_80003es2lan
:
634 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
635 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
636 pba
-= 8; /* allocate more FIFO for Tx */
639 if (adapter
->hw
.mac_type
== e1000_82547
) {
640 adapter
->tx_fifo_head
= 0;
641 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
642 adapter
->tx_fifo_size
=
643 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
644 atomic_set(&adapter
->tx_fifo_stall
, 0);
647 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
649 /* flow control settings */
650 /* Set the FC high water mark to 90% of the FIFO size.
651 * Required to clear last 3 LSB */
652 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
653 /* We can't use 90% on small FIFOs because the remainder
654 * would be less than 1 full frame. In this case, we size
655 * it to allow at least a full frame above the high water
657 if (pba
< E1000_PBA_16K
)
658 fc_high_water_mark
= (pba
* 1024) - 1600;
660 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
661 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
662 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
663 adapter
->hw
.fc_pause_time
= 0xFFFF;
665 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
666 adapter
->hw
.fc_send_xon
= 1;
667 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
669 /* Allow time for pending master requests to run */
670 e1000_reset_hw(&adapter
->hw
);
671 if (adapter
->hw
.mac_type
>= e1000_82544
)
672 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
674 /* disable Multiple Reads in Transmit Control Register for debugging */
675 tctl
= E1000_READ_REG(hw
, TCTL
);
676 E1000_WRITE_REG(hw
, TCTL
, tctl
& ~E1000_TCTL_MULR
);
679 if (e1000_init_hw(&adapter
->hw
))
680 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
681 e1000_update_mng_vlan(adapter
);
682 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
683 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
685 e1000_reset_adaptive(&adapter
->hw
);
686 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
688 if (!adapter
->smart_power_down
&&
689 (adapter
->hw
.mac_type
== e1000_82571
||
690 adapter
->hw
.mac_type
== e1000_82572
)) {
691 uint16_t phy_data
= 0;
692 /* speed up time to link by disabling smart power down, ignore
693 * the return value of this function because there is nothing
694 * different we would do if it failed */
695 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
697 phy_data
&= ~IGP02E1000_PM_SPD
;
698 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
702 if ((adapter
->en_mng_pt
) &&
703 (adapter
->hw
.mac_type
>= e1000_82540
) &&
704 (adapter
->hw
.mac_type
< e1000_82571
) &&
705 (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
706 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
707 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
708 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
713 * e1000_probe - Device Initialization Routine
714 * @pdev: PCI device information struct
715 * @ent: entry in e1000_pci_tbl
717 * Returns 0 on success, negative on failure
719 * e1000_probe initializes an adapter identified by a pci_dev structure.
720 * The OS initialization, configuring of the adapter private structure,
721 * and a hardware reset occur.
725 e1000_probe(struct pci_dev
*pdev
,
726 const struct pci_device_id
*ent
)
728 struct net_device
*netdev
;
729 struct e1000_adapter
*adapter
;
730 unsigned long mmio_start
, mmio_len
;
731 unsigned long flash_start
, flash_len
;
733 static int cards_found
= 0;
734 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
735 int i
, err
, pci_using_dac
;
736 uint16_t eeprom_data
= 0;
737 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
738 if ((err
= pci_enable_device(pdev
)))
741 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
742 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
745 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
746 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
747 E1000_ERR("No usable DMA configuration, aborting\n");
753 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
756 pci_set_master(pdev
);
759 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
761 goto err_alloc_etherdev
;
763 SET_MODULE_OWNER(netdev
);
764 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
766 pci_set_drvdata(pdev
, netdev
);
767 adapter
= netdev_priv(netdev
);
768 adapter
->netdev
= netdev
;
769 adapter
->pdev
= pdev
;
770 adapter
->hw
.back
= adapter
;
771 adapter
->msg_enable
= (1 << debug
) - 1;
773 mmio_start
= pci_resource_start(pdev
, BAR_0
);
774 mmio_len
= pci_resource_len(pdev
, BAR_0
);
777 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
778 if (!adapter
->hw
.hw_addr
)
781 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
782 if (pci_resource_len(pdev
, i
) == 0)
784 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
785 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
790 netdev
->open
= &e1000_open
;
791 netdev
->stop
= &e1000_close
;
792 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
793 netdev
->get_stats
= &e1000_get_stats
;
794 netdev
->set_multicast_list
= &e1000_set_multi
;
795 netdev
->set_mac_address
= &e1000_set_mac
;
796 netdev
->change_mtu
= &e1000_change_mtu
;
797 netdev
->do_ioctl
= &e1000_ioctl
;
798 e1000_set_ethtool_ops(netdev
);
799 netdev
->tx_timeout
= &e1000_tx_timeout
;
800 netdev
->watchdog_timeo
= 5 * HZ
;
801 #ifdef CONFIG_E1000_NAPI
802 netdev
->poll
= &e1000_clean
;
805 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
806 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
807 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
808 #ifdef CONFIG_NET_POLL_CONTROLLER
809 netdev
->poll_controller
= e1000_netpoll
;
811 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
813 netdev
->mem_start
= mmio_start
;
814 netdev
->mem_end
= mmio_start
+ mmio_len
;
815 netdev
->base_addr
= adapter
->hw
.io_base
;
817 adapter
->bd_number
= cards_found
;
819 /* setup the private structure */
821 if ((err
= e1000_sw_init(adapter
)))
825 /* Flash BAR mapping must happen after e1000_sw_init
826 * because it depends on mac_type */
827 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
828 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
829 flash_start
= pci_resource_start(pdev
, 1);
830 flash_len
= pci_resource_len(pdev
, 1);
831 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
832 if (!adapter
->hw
.flash_address
)
836 if (e1000_check_phy_reset_block(&adapter
->hw
))
837 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
839 if (adapter
->hw
.mac_type
>= e1000_82543
) {
840 netdev
->features
= NETIF_F_SG
|
844 NETIF_F_HW_VLAN_FILTER
;
845 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
846 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
850 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
851 (adapter
->hw
.mac_type
!= e1000_82547
))
852 netdev
->features
|= NETIF_F_TSO
;
854 #ifdef NETIF_F_TSO_IPV6
855 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
856 netdev
->features
|= NETIF_F_TSO_IPV6
;
860 netdev
->features
|= NETIF_F_HIGHDMA
;
862 netdev
->features
|= NETIF_F_LLTX
;
864 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
866 /* initialize eeprom parameters */
868 if (e1000_init_eeprom_params(&adapter
->hw
)) {
869 E1000_ERR("EEPROM initialization failed\n");
873 /* before reading the EEPROM, reset the controller to
874 * put the device in a known good starting state */
876 e1000_reset_hw(&adapter
->hw
);
878 /* make sure the EEPROM is good */
880 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
881 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
885 /* copy the MAC address out of the EEPROM */
887 if (e1000_read_mac_addr(&adapter
->hw
))
888 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
889 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
890 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
892 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
893 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
897 e1000_get_bus_info(&adapter
->hw
);
899 init_timer(&adapter
->tx_fifo_stall_timer
);
900 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
901 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
903 init_timer(&adapter
->watchdog_timer
);
904 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
905 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
907 init_timer(&adapter
->phy_info_timer
);
908 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
909 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
911 INIT_WORK(&adapter
->reset_task
,
912 (void (*)(void *))e1000_reset_task
, netdev
);
914 e1000_check_options(adapter
);
916 /* Initial Wake on LAN setting
917 * If APM wake is enabled in the EEPROM,
918 * enable the ACPI Magic Packet filter
921 switch (adapter
->hw
.mac_type
) {
922 case e1000_82542_rev2_0
:
923 case e1000_82542_rev2_1
:
927 e1000_read_eeprom(&adapter
->hw
,
928 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
929 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
932 e1000_read_eeprom(&adapter
->hw
,
933 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
934 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
937 case e1000_82546_rev_3
:
939 case e1000_80003es2lan
:
940 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
941 e1000_read_eeprom(&adapter
->hw
,
942 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
947 e1000_read_eeprom(&adapter
->hw
,
948 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
951 if (eeprom_data
& eeprom_apme_mask
)
952 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
954 /* now that we have the eeprom settings, apply the special cases
955 * where the eeprom may be wrong or the board simply won't support
956 * wake on lan on a particular port */
957 switch (pdev
->device
) {
958 case E1000_DEV_ID_82546GB_PCIE
:
959 adapter
->eeprom_wol
= 0;
961 case E1000_DEV_ID_82546EB_FIBER
:
962 case E1000_DEV_ID_82546GB_FIBER
:
963 case E1000_DEV_ID_82571EB_FIBER
:
964 /* Wake events only supported on port A for dual fiber
965 * regardless of eeprom setting */
966 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
967 adapter
->eeprom_wol
= 0;
969 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
970 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
971 /* if quad port adapter, disable WoL on all but port A */
972 if (global_quad_port_a
!= 0)
973 adapter
->eeprom_wol
= 0;
975 adapter
->quad_port_a
= 1;
976 /* Reset for multiple quad port adapters */
977 if (++global_quad_port_a
== 4)
978 global_quad_port_a
= 0;
982 /* initialize the wol settings based on the eeprom settings */
983 adapter
->wol
= adapter
->eeprom_wol
;
985 /* print bus type/speed/width info */
987 struct e1000_hw
*hw
= &adapter
->hw
;
988 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
989 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
990 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
991 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
992 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
993 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
994 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
995 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
996 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
997 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
998 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1002 for (i
= 0; i
< 6; i
++)
1003 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1005 /* reset the hardware with the new settings */
1006 e1000_reset(adapter
);
1008 /* If the controller is 82573 and f/w is AMT, do not set
1009 * DRV_LOAD until the interface is up. For all other cases,
1010 * let the f/w know that the h/w is now under the control
1012 if (adapter
->hw
.mac_type
!= e1000_82573
||
1013 !e1000_check_mng_mode(&adapter
->hw
))
1014 e1000_get_hw_control(adapter
);
1016 strcpy(netdev
->name
, "eth%d");
1017 if ((err
= register_netdev(netdev
)))
1020 /* tell the stack to leave us alone until e1000_open() is called */
1021 netif_carrier_off(netdev
);
1022 netif_stop_queue(netdev
);
1024 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1030 e1000_release_hw_control(adapter
);
1032 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1033 e1000_phy_hw_reset(&adapter
->hw
);
1035 if (adapter
->hw
.flash_address
)
1036 iounmap(adapter
->hw
.flash_address
);
1038 #ifdef CONFIG_E1000_NAPI
1039 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1040 dev_put(&adapter
->polling_netdev
[i
]);
1043 kfree(adapter
->tx_ring
);
1044 kfree(adapter
->rx_ring
);
1045 #ifdef CONFIG_E1000_NAPI
1046 kfree(adapter
->polling_netdev
);
1049 iounmap(adapter
->hw
.hw_addr
);
1051 free_netdev(netdev
);
1053 pci_release_regions(pdev
);
1056 pci_disable_device(pdev
);
1061 * e1000_remove - Device Removal Routine
1062 * @pdev: PCI device information struct
1064 * e1000_remove is called by the PCI subsystem to alert the driver
1065 * that it should release a PCI device. The could be caused by a
1066 * Hot-Plug event, or because the driver is going to be removed from
1070 static void __devexit
1071 e1000_remove(struct pci_dev
*pdev
)
1073 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1074 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1076 #ifdef CONFIG_E1000_NAPI
1080 flush_scheduled_work();
1082 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1083 adapter
->hw
.mac_type
< e1000_82571
&&
1084 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1085 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1086 if (manc
& E1000_MANC_SMBUS_EN
) {
1087 manc
|= E1000_MANC_ARP_EN
;
1088 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1092 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1093 * would have already happened in close and is redundant. */
1094 e1000_release_hw_control(adapter
);
1096 unregister_netdev(netdev
);
1097 #ifdef CONFIG_E1000_NAPI
1098 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1099 dev_put(&adapter
->polling_netdev
[i
]);
1102 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1103 e1000_phy_hw_reset(&adapter
->hw
);
1105 kfree(adapter
->tx_ring
);
1106 kfree(adapter
->rx_ring
);
1107 #ifdef CONFIG_E1000_NAPI
1108 kfree(adapter
->polling_netdev
);
1111 iounmap(adapter
->hw
.hw_addr
);
1112 if (adapter
->hw
.flash_address
)
1113 iounmap(adapter
->hw
.flash_address
);
1114 pci_release_regions(pdev
);
1116 free_netdev(netdev
);
1118 pci_disable_device(pdev
);
1122 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1123 * @adapter: board private structure to initialize
1125 * e1000_sw_init initializes the Adapter private data structure.
1126 * Fields are initialized based on PCI device information and
1127 * OS network device settings (MTU size).
1130 static int __devinit
1131 e1000_sw_init(struct e1000_adapter
*adapter
)
1133 struct e1000_hw
*hw
= &adapter
->hw
;
1134 struct net_device
*netdev
= adapter
->netdev
;
1135 struct pci_dev
*pdev
= adapter
->pdev
;
1136 #ifdef CONFIG_E1000_NAPI
1140 /* PCI config space info */
1142 hw
->vendor_id
= pdev
->vendor
;
1143 hw
->device_id
= pdev
->device
;
1144 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1145 hw
->subsystem_id
= pdev
->subsystem_device
;
1147 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1149 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1151 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1152 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1153 hw
->max_frame_size
= netdev
->mtu
+
1154 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1155 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1157 /* identify the MAC */
1159 if (e1000_set_mac_type(hw
)) {
1160 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1164 switch (hw
->mac_type
) {
1169 case e1000_82541_rev_2
:
1170 case e1000_82547_rev_2
:
1171 hw
->phy_init_script
= 1;
1175 e1000_set_media_type(hw
);
1177 hw
->wait_autoneg_complete
= FALSE
;
1178 hw
->tbi_compatibility_en
= TRUE
;
1179 hw
->adaptive_ifs
= TRUE
;
1181 /* Copper options */
1183 if (hw
->media_type
== e1000_media_type_copper
) {
1184 hw
->mdix
= AUTO_ALL_MODES
;
1185 hw
->disable_polarity_correction
= FALSE
;
1186 hw
->master_slave
= E1000_MASTER_SLAVE
;
1189 adapter
->num_tx_queues
= 1;
1190 adapter
->num_rx_queues
= 1;
1192 if (e1000_alloc_queues(adapter
)) {
1193 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1197 #ifdef CONFIG_E1000_NAPI
1198 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1199 adapter
->polling_netdev
[i
].priv
= adapter
;
1200 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1201 adapter
->polling_netdev
[i
].weight
= 64;
1202 dev_hold(&adapter
->polling_netdev
[i
]);
1203 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1205 spin_lock_init(&adapter
->tx_queue_lock
);
1208 atomic_set(&adapter
->irq_sem
, 1);
1209 spin_lock_init(&adapter
->stats_lock
);
1211 set_bit(__E1000_DOWN
, &adapter
->flags
);
1217 * e1000_alloc_queues - Allocate memory for all rings
1218 * @adapter: board private structure to initialize
1220 * We allocate one ring per queue at run-time since we don't know the
1221 * number of queues at compile-time. The polling_netdev array is
1222 * intended for Multiqueue, but should work fine with a single queue.
1225 static int __devinit
1226 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1230 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1231 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1232 if (!adapter
->tx_ring
)
1234 memset(adapter
->tx_ring
, 0, size
);
1236 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1237 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1238 if (!adapter
->rx_ring
) {
1239 kfree(adapter
->tx_ring
);
1242 memset(adapter
->rx_ring
, 0, size
);
1244 #ifdef CONFIG_E1000_NAPI
1245 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1246 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1247 if (!adapter
->polling_netdev
) {
1248 kfree(adapter
->tx_ring
);
1249 kfree(adapter
->rx_ring
);
1252 memset(adapter
->polling_netdev
, 0, size
);
1255 return E1000_SUCCESS
;
1259 * e1000_open - Called when a network interface is made active
1260 * @netdev: network interface device structure
1262 * Returns 0 on success, negative value on failure
1264 * The open entry point is called when a network interface is made
1265 * active by the system (IFF_UP). At this point all resources needed
1266 * for transmit and receive operations are allocated, the interrupt
1267 * handler is registered with the OS, the watchdog timer is started,
1268 * and the stack is notified that the interface is ready.
1272 e1000_open(struct net_device
*netdev
)
1274 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1277 /* disallow open during test */
1278 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1281 /* allocate transmit descriptors */
1283 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1286 /* allocate receive descriptors */
1288 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1291 err
= e1000_request_irq(adapter
);
1295 e1000_power_up_phy(adapter
);
1297 if ((err
= e1000_up(adapter
)))
1299 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1300 if ((adapter
->hw
.mng_cookie
.status
&
1301 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1302 e1000_update_mng_vlan(adapter
);
1305 /* If AMT is enabled, let the firmware know that the network
1306 * interface is now open */
1307 if (adapter
->hw
.mac_type
== e1000_82573
&&
1308 e1000_check_mng_mode(&adapter
->hw
))
1309 e1000_get_hw_control(adapter
);
1311 return E1000_SUCCESS
;
1314 e1000_power_down_phy(adapter
);
1315 e1000_free_irq(adapter
);
1317 e1000_free_all_rx_resources(adapter
);
1319 e1000_free_all_tx_resources(adapter
);
1321 e1000_reset(adapter
);
1327 * e1000_close - Disables a network interface
1328 * @netdev: network interface device structure
1330 * Returns 0, this is not allowed to fail
1332 * The close entry point is called when an interface is de-activated
1333 * by the OS. The hardware is still under the drivers control, but
1334 * needs to be disabled. A global MAC reset is issued to stop the
1335 * hardware, and all transmit and receive resources are freed.
1339 e1000_close(struct net_device
*netdev
)
1341 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1343 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1344 e1000_down(adapter
);
1345 e1000_power_down_phy(adapter
);
1346 e1000_free_irq(adapter
);
1348 e1000_free_all_tx_resources(adapter
);
1349 e1000_free_all_rx_resources(adapter
);
1351 /* kill manageability vlan ID if supported, but not if a vlan with
1352 * the same ID is registered on the host OS (let 8021q kill it) */
1353 if ((adapter
->hw
.mng_cookie
.status
&
1354 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1356 adapter
->vlgrp
->vlan_devices
[adapter
->mng_vlan_id
])) {
1357 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1360 /* If AMT is enabled, let the firmware know that the network
1361 * interface is now closed */
1362 if (adapter
->hw
.mac_type
== e1000_82573
&&
1363 e1000_check_mng_mode(&adapter
->hw
))
1364 e1000_release_hw_control(adapter
);
1370 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1371 * @adapter: address of board private structure
1372 * @start: address of beginning of memory
1373 * @len: length of memory
1376 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1377 void *start
, unsigned long len
)
1379 unsigned long begin
= (unsigned long) start
;
1380 unsigned long end
= begin
+ len
;
1382 /* First rev 82545 and 82546 need to not allow any memory
1383 * write location to cross 64k boundary due to errata 23 */
1384 if (adapter
->hw
.mac_type
== e1000_82545
||
1385 adapter
->hw
.mac_type
== e1000_82546
) {
1386 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1393 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1394 * @adapter: board private structure
1395 * @txdr: tx descriptor ring (for a specific queue) to setup
1397 * Return 0 on success, negative on failure
1401 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1402 struct e1000_tx_ring
*txdr
)
1404 struct pci_dev
*pdev
= adapter
->pdev
;
1407 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1408 txdr
->buffer_info
= vmalloc(size
);
1409 if (!txdr
->buffer_info
) {
1411 "Unable to allocate memory for the transmit descriptor ring\n");
1414 memset(txdr
->buffer_info
, 0, size
);
1416 /* round up to nearest 4K */
1418 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1419 E1000_ROUNDUP(txdr
->size
, 4096);
1421 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1424 vfree(txdr
->buffer_info
);
1426 "Unable to allocate memory for the transmit descriptor ring\n");
1430 /* Fix for errata 23, can't cross 64kB boundary */
1431 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1432 void *olddesc
= txdr
->desc
;
1433 dma_addr_t olddma
= txdr
->dma
;
1434 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1435 "at %p\n", txdr
->size
, txdr
->desc
);
1436 /* Try again, without freeing the previous */
1437 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1438 /* Failed allocation, critical failure */
1440 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1441 goto setup_tx_desc_die
;
1444 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1446 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1448 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1450 "Unable to allocate aligned memory "
1451 "for the transmit descriptor ring\n");
1452 vfree(txdr
->buffer_info
);
1455 /* Free old allocation, new allocation was successful */
1456 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1459 memset(txdr
->desc
, 0, txdr
->size
);
1461 txdr
->next_to_use
= 0;
1462 txdr
->next_to_clean
= 0;
1463 spin_lock_init(&txdr
->tx_lock
);
1469 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1470 * (Descriptors) for all queues
1471 * @adapter: board private structure
1473 * Return 0 on success, negative on failure
1477 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1481 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1482 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1485 "Allocation for Tx Queue %u failed\n", i
);
1486 for (i
-- ; i
>= 0; i
--)
1487 e1000_free_tx_resources(adapter
,
1488 &adapter
->tx_ring
[i
]);
1497 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1498 * @adapter: board private structure
1500 * Configure the Tx unit of the MAC after a reset.
1504 e1000_configure_tx(struct e1000_adapter
*adapter
)
1507 struct e1000_hw
*hw
= &adapter
->hw
;
1508 uint32_t tdlen
, tctl
, tipg
, tarc
;
1509 uint32_t ipgr1
, ipgr2
;
1511 /* Setup the HW Tx Head and Tail descriptor pointers */
1513 switch (adapter
->num_tx_queues
) {
1516 tdba
= adapter
->tx_ring
[0].dma
;
1517 tdlen
= adapter
->tx_ring
[0].count
*
1518 sizeof(struct e1000_tx_desc
);
1519 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1520 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1521 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1522 E1000_WRITE_REG(hw
, TDT
, 0);
1523 E1000_WRITE_REG(hw
, TDH
, 0);
1524 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1525 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1529 /* Set the default values for the Tx Inter Packet Gap timer */
1531 if (hw
->media_type
== e1000_media_type_fiber
||
1532 hw
->media_type
== e1000_media_type_internal_serdes
)
1533 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1535 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1537 switch (hw
->mac_type
) {
1538 case e1000_82542_rev2_0
:
1539 case e1000_82542_rev2_1
:
1540 tipg
= DEFAULT_82542_TIPG_IPGT
;
1541 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1542 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1544 case e1000_80003es2lan
:
1545 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1546 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1549 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1550 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1553 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1554 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1555 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1557 /* Set the Tx Interrupt Delay register */
1559 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1560 if (hw
->mac_type
>= e1000_82540
)
1561 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1563 /* Program the Transmit Control Register */
1565 tctl
= E1000_READ_REG(hw
, TCTL
);
1566 tctl
&= ~E1000_TCTL_CT
;
1567 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1568 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1570 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1571 tarc
= E1000_READ_REG(hw
, TARC0
);
1573 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1574 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1575 tarc
= E1000_READ_REG(hw
, TARC0
);
1577 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1578 tarc
= E1000_READ_REG(hw
, TARC1
);
1580 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1583 e1000_config_collision_dist(hw
);
1585 /* Setup Transmit Descriptor Settings for eop descriptor */
1586 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1589 if (hw
->mac_type
< e1000_82543
)
1590 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1592 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1594 /* Cache if we're 82544 running in PCI-X because we'll
1595 * need this to apply a workaround later in the send path. */
1596 if (hw
->mac_type
== e1000_82544
&&
1597 hw
->bus_type
== e1000_bus_type_pcix
)
1598 adapter
->pcix_82544
= 1;
1600 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1605 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1606 * @adapter: board private structure
1607 * @rxdr: rx descriptor ring (for a specific queue) to setup
1609 * Returns 0 on success, negative on failure
1613 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1614 struct e1000_rx_ring
*rxdr
)
1616 struct pci_dev
*pdev
= adapter
->pdev
;
1619 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1620 rxdr
->buffer_info
= vmalloc(size
);
1621 if (!rxdr
->buffer_info
) {
1623 "Unable to allocate memory for the receive descriptor ring\n");
1626 memset(rxdr
->buffer_info
, 0, size
);
1628 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1629 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1630 if (!rxdr
->ps_page
) {
1631 vfree(rxdr
->buffer_info
);
1633 "Unable to allocate memory for the receive descriptor ring\n");
1636 memset(rxdr
->ps_page
, 0, size
);
1638 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1639 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1640 if (!rxdr
->ps_page_dma
) {
1641 vfree(rxdr
->buffer_info
);
1642 kfree(rxdr
->ps_page
);
1644 "Unable to allocate memory for the receive descriptor ring\n");
1647 memset(rxdr
->ps_page_dma
, 0, size
);
1649 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1650 desc_len
= sizeof(struct e1000_rx_desc
);
1652 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1654 /* Round up to nearest 4K */
1656 rxdr
->size
= rxdr
->count
* desc_len
;
1657 E1000_ROUNDUP(rxdr
->size
, 4096);
1659 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1663 "Unable to allocate memory for the receive descriptor ring\n");
1665 vfree(rxdr
->buffer_info
);
1666 kfree(rxdr
->ps_page
);
1667 kfree(rxdr
->ps_page_dma
);
1671 /* Fix for errata 23, can't cross 64kB boundary */
1672 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1673 void *olddesc
= rxdr
->desc
;
1674 dma_addr_t olddma
= rxdr
->dma
;
1675 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1676 "at %p\n", rxdr
->size
, rxdr
->desc
);
1677 /* Try again, without freeing the previous */
1678 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1679 /* Failed allocation, critical failure */
1681 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1683 "Unable to allocate memory "
1684 "for the receive descriptor ring\n");
1685 goto setup_rx_desc_die
;
1688 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1690 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1692 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1694 "Unable to allocate aligned memory "
1695 "for the receive descriptor ring\n");
1696 goto setup_rx_desc_die
;
1698 /* Free old allocation, new allocation was successful */
1699 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1702 memset(rxdr
->desc
, 0, rxdr
->size
);
1704 rxdr
->next_to_clean
= 0;
1705 rxdr
->next_to_use
= 0;
1711 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1712 * (Descriptors) for all queues
1713 * @adapter: board private structure
1715 * Return 0 on success, negative on failure
1719 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1723 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1724 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1727 "Allocation for Rx Queue %u failed\n", i
);
1728 for (i
-- ; i
>= 0; i
--)
1729 e1000_free_rx_resources(adapter
,
1730 &adapter
->rx_ring
[i
]);
1739 * e1000_setup_rctl - configure the receive control registers
1740 * @adapter: Board private structure
1742 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1743 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1745 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1747 uint32_t rctl
, rfctl
;
1748 uint32_t psrctl
= 0;
1749 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1753 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1755 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1757 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1758 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1759 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1761 if (adapter
->hw
.tbi_compatibility_on
== 1)
1762 rctl
|= E1000_RCTL_SBP
;
1764 rctl
&= ~E1000_RCTL_SBP
;
1766 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1767 rctl
&= ~E1000_RCTL_LPE
;
1769 rctl
|= E1000_RCTL_LPE
;
1771 /* Setup buffer sizes */
1772 rctl
&= ~E1000_RCTL_SZ_4096
;
1773 rctl
|= E1000_RCTL_BSEX
;
1774 switch (adapter
->rx_buffer_len
) {
1775 case E1000_RXBUFFER_256
:
1776 rctl
|= E1000_RCTL_SZ_256
;
1777 rctl
&= ~E1000_RCTL_BSEX
;
1779 case E1000_RXBUFFER_512
:
1780 rctl
|= E1000_RCTL_SZ_512
;
1781 rctl
&= ~E1000_RCTL_BSEX
;
1783 case E1000_RXBUFFER_1024
:
1784 rctl
|= E1000_RCTL_SZ_1024
;
1785 rctl
&= ~E1000_RCTL_BSEX
;
1787 case E1000_RXBUFFER_2048
:
1789 rctl
|= E1000_RCTL_SZ_2048
;
1790 rctl
&= ~E1000_RCTL_BSEX
;
1792 case E1000_RXBUFFER_4096
:
1793 rctl
|= E1000_RCTL_SZ_4096
;
1795 case E1000_RXBUFFER_8192
:
1796 rctl
|= E1000_RCTL_SZ_8192
;
1798 case E1000_RXBUFFER_16384
:
1799 rctl
|= E1000_RCTL_SZ_16384
;
1803 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1804 /* 82571 and greater support packet-split where the protocol
1805 * header is placed in skb->data and the packet data is
1806 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1807 * In the case of a non-split, skb->data is linearly filled,
1808 * followed by the page buffers. Therefore, skb->data is
1809 * sized to hold the largest protocol header.
1811 /* allocations using alloc_page take too long for regular MTU
1812 * so only enable packet split for jumbo frames */
1813 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1814 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1815 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1816 adapter
->rx_ps_pages
= pages
;
1818 adapter
->rx_ps_pages
= 0;
1820 if (adapter
->rx_ps_pages
) {
1821 /* Configure extra packet-split registers */
1822 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1823 rfctl
|= E1000_RFCTL_EXTEN
;
1824 /* disable IPv6 packet split support */
1825 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1826 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1828 rctl
|= E1000_RCTL_DTYP_PS
;
1830 psrctl
|= adapter
->rx_ps_bsize0
>>
1831 E1000_PSRCTL_BSIZE0_SHIFT
;
1833 switch (adapter
->rx_ps_pages
) {
1835 psrctl
|= PAGE_SIZE
<<
1836 E1000_PSRCTL_BSIZE3_SHIFT
;
1838 psrctl
|= PAGE_SIZE
<<
1839 E1000_PSRCTL_BSIZE2_SHIFT
;
1841 psrctl
|= PAGE_SIZE
>>
1842 E1000_PSRCTL_BSIZE1_SHIFT
;
1846 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1849 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1853 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1854 * @adapter: board private structure
1856 * Configure the Rx unit of the MAC after a reset.
1860 e1000_configure_rx(struct e1000_adapter
*adapter
)
1863 struct e1000_hw
*hw
= &adapter
->hw
;
1864 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1866 if (adapter
->rx_ps_pages
) {
1867 /* this is a 32 byte descriptor */
1868 rdlen
= adapter
->rx_ring
[0].count
*
1869 sizeof(union e1000_rx_desc_packet_split
);
1870 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1871 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1873 rdlen
= adapter
->rx_ring
[0].count
*
1874 sizeof(struct e1000_rx_desc
);
1875 adapter
->clean_rx
= e1000_clean_rx_irq
;
1876 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1879 /* disable receives while setting up the descriptors */
1880 rctl
= E1000_READ_REG(hw
, RCTL
);
1881 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1883 /* set the Receive Delay Timer Register */
1884 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1886 if (hw
->mac_type
>= e1000_82540
) {
1887 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1888 if (adapter
->itr
> 1)
1889 E1000_WRITE_REG(hw
, ITR
,
1890 1000000000 / (adapter
->itr
* 256));
1893 if (hw
->mac_type
>= e1000_82571
) {
1894 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1895 /* Reset delay timers after every interrupt */
1896 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1897 #ifdef CONFIG_E1000_NAPI
1898 /* Auto-Mask interrupts upon ICR read. */
1899 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1901 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1902 E1000_WRITE_REG(hw
, IAM
, ~0);
1903 E1000_WRITE_FLUSH(hw
);
1906 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1907 * the Base and Length of the Rx Descriptor Ring */
1908 switch (adapter
->num_rx_queues
) {
1911 rdba
= adapter
->rx_ring
[0].dma
;
1912 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1913 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1914 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1915 E1000_WRITE_REG(hw
, RDT
, 0);
1916 E1000_WRITE_REG(hw
, RDH
, 0);
1917 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1918 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1922 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1923 if (hw
->mac_type
>= e1000_82543
) {
1924 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1925 if (adapter
->rx_csum
== TRUE
) {
1926 rxcsum
|= E1000_RXCSUM_TUOFL
;
1928 /* Enable 82571 IPv4 payload checksum for UDP fragments
1929 * Must be used in conjunction with packet-split. */
1930 if ((hw
->mac_type
>= e1000_82571
) &&
1931 (adapter
->rx_ps_pages
)) {
1932 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1935 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1936 /* don't need to clear IPPCSE as it defaults to 0 */
1938 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1941 /* Enable Receives */
1942 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1946 * e1000_free_tx_resources - Free Tx Resources per Queue
1947 * @adapter: board private structure
1948 * @tx_ring: Tx descriptor ring for a specific queue
1950 * Free all transmit software resources
1954 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1955 struct e1000_tx_ring
*tx_ring
)
1957 struct pci_dev
*pdev
= adapter
->pdev
;
1959 e1000_clean_tx_ring(adapter
, tx_ring
);
1961 vfree(tx_ring
->buffer_info
);
1962 tx_ring
->buffer_info
= NULL
;
1964 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1966 tx_ring
->desc
= NULL
;
1970 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1971 * @adapter: board private structure
1973 * Free all transmit software resources
1977 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1981 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1982 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1986 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1987 struct e1000_buffer
*buffer_info
)
1989 if (buffer_info
->dma
) {
1990 pci_unmap_page(adapter
->pdev
,
1992 buffer_info
->length
,
1995 if (buffer_info
->skb
)
1996 dev_kfree_skb_any(buffer_info
->skb
);
1997 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
2001 * e1000_clean_tx_ring - Free Tx Buffers
2002 * @adapter: board private structure
2003 * @tx_ring: ring to be cleaned
2007 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2008 struct e1000_tx_ring
*tx_ring
)
2010 struct e1000_buffer
*buffer_info
;
2014 /* Free all the Tx ring sk_buffs */
2016 for (i
= 0; i
< tx_ring
->count
; i
++) {
2017 buffer_info
= &tx_ring
->buffer_info
[i
];
2018 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2021 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2022 memset(tx_ring
->buffer_info
, 0, size
);
2024 /* Zero out the descriptor ring */
2026 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2028 tx_ring
->next_to_use
= 0;
2029 tx_ring
->next_to_clean
= 0;
2030 tx_ring
->last_tx_tso
= 0;
2032 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2033 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2037 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2038 * @adapter: board private structure
2042 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2046 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2047 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2051 * e1000_free_rx_resources - Free Rx Resources
2052 * @adapter: board private structure
2053 * @rx_ring: ring to clean the resources from
2055 * Free all receive software resources
2059 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2060 struct e1000_rx_ring
*rx_ring
)
2062 struct pci_dev
*pdev
= adapter
->pdev
;
2064 e1000_clean_rx_ring(adapter
, rx_ring
);
2066 vfree(rx_ring
->buffer_info
);
2067 rx_ring
->buffer_info
= NULL
;
2068 kfree(rx_ring
->ps_page
);
2069 rx_ring
->ps_page
= NULL
;
2070 kfree(rx_ring
->ps_page_dma
);
2071 rx_ring
->ps_page_dma
= NULL
;
2073 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2075 rx_ring
->desc
= NULL
;
2079 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2080 * @adapter: board private structure
2082 * Free all receive software resources
2086 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2090 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2091 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2095 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2096 * @adapter: board private structure
2097 * @rx_ring: ring to free buffers from
2101 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2102 struct e1000_rx_ring
*rx_ring
)
2104 struct e1000_buffer
*buffer_info
;
2105 struct e1000_ps_page
*ps_page
;
2106 struct e1000_ps_page_dma
*ps_page_dma
;
2107 struct pci_dev
*pdev
= adapter
->pdev
;
2111 /* Free all the Rx ring sk_buffs */
2112 for (i
= 0; i
< rx_ring
->count
; i
++) {
2113 buffer_info
= &rx_ring
->buffer_info
[i
];
2114 if (buffer_info
->skb
) {
2115 pci_unmap_single(pdev
,
2117 buffer_info
->length
,
2118 PCI_DMA_FROMDEVICE
);
2120 dev_kfree_skb(buffer_info
->skb
);
2121 buffer_info
->skb
= NULL
;
2123 ps_page
= &rx_ring
->ps_page
[i
];
2124 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2125 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2126 if (!ps_page
->ps_page
[j
]) break;
2127 pci_unmap_page(pdev
,
2128 ps_page_dma
->ps_page_dma
[j
],
2129 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2130 ps_page_dma
->ps_page_dma
[j
] = 0;
2131 put_page(ps_page
->ps_page
[j
]);
2132 ps_page
->ps_page
[j
] = NULL
;
2136 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2137 memset(rx_ring
->buffer_info
, 0, size
);
2138 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2139 memset(rx_ring
->ps_page
, 0, size
);
2140 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2141 memset(rx_ring
->ps_page_dma
, 0, size
);
2143 /* Zero out the descriptor ring */
2145 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2147 rx_ring
->next_to_clean
= 0;
2148 rx_ring
->next_to_use
= 0;
2150 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2151 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2155 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2156 * @adapter: board private structure
2160 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2164 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2165 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2168 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2169 * and memory write and invalidate disabled for certain operations
2172 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2174 struct net_device
*netdev
= adapter
->netdev
;
2177 e1000_pci_clear_mwi(&adapter
->hw
);
2179 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2180 rctl
|= E1000_RCTL_RST
;
2181 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2182 E1000_WRITE_FLUSH(&adapter
->hw
);
2185 if (netif_running(netdev
))
2186 e1000_clean_all_rx_rings(adapter
);
2190 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2192 struct net_device
*netdev
= adapter
->netdev
;
2195 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2196 rctl
&= ~E1000_RCTL_RST
;
2197 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2198 E1000_WRITE_FLUSH(&adapter
->hw
);
2201 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2202 e1000_pci_set_mwi(&adapter
->hw
);
2204 if (netif_running(netdev
)) {
2205 /* No need to loop, because 82542 supports only 1 queue */
2206 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2207 e1000_configure_rx(adapter
);
2208 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2213 * e1000_set_mac - Change the Ethernet Address of the NIC
2214 * @netdev: network interface device structure
2215 * @p: pointer to an address structure
2217 * Returns 0 on success, negative on failure
2221 e1000_set_mac(struct net_device
*netdev
, void *p
)
2223 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2224 struct sockaddr
*addr
= p
;
2226 if (!is_valid_ether_addr(addr
->sa_data
))
2227 return -EADDRNOTAVAIL
;
2229 /* 82542 2.0 needs to be in reset to write receive address registers */
2231 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2232 e1000_enter_82542_rst(adapter
);
2234 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2235 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2237 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2239 /* With 82571 controllers, LAA may be overwritten (with the default)
2240 * due to controller reset from the other port. */
2241 if (adapter
->hw
.mac_type
== e1000_82571
) {
2242 /* activate the work around */
2243 adapter
->hw
.laa_is_present
= 1;
2245 /* Hold a copy of the LAA in RAR[14] This is done so that
2246 * between the time RAR[0] gets clobbered and the time it
2247 * gets fixed (in e1000_watchdog), the actual LAA is in one
2248 * of the RARs and no incoming packets directed to this port
2249 * are dropped. Eventaully the LAA will be in RAR[0] and
2251 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2252 E1000_RAR_ENTRIES
- 1);
2255 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2256 e1000_leave_82542_rst(adapter
);
2262 * e1000_set_multi - Multicast and Promiscuous mode set
2263 * @netdev: network interface device structure
2265 * The set_multi entry point is called whenever the multicast address
2266 * list or the network interface flags are updated. This routine is
2267 * responsible for configuring the hardware for proper multicast,
2268 * promiscuous mode, and all-multi behavior.
2272 e1000_set_multi(struct net_device
*netdev
)
2274 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2275 struct e1000_hw
*hw
= &adapter
->hw
;
2276 struct dev_mc_list
*mc_ptr
;
2278 uint32_t hash_value
;
2279 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2280 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2281 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2282 E1000_NUM_MTA_REGISTERS
;
2284 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2285 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2287 /* reserve RAR[14] for LAA over-write work-around */
2288 if (adapter
->hw
.mac_type
== e1000_82571
)
2291 /* Check for Promiscuous and All Multicast modes */
2293 rctl
= E1000_READ_REG(hw
, RCTL
);
2295 if (netdev
->flags
& IFF_PROMISC
) {
2296 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2297 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2298 rctl
|= E1000_RCTL_MPE
;
2299 rctl
&= ~E1000_RCTL_UPE
;
2301 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2304 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2306 /* 82542 2.0 needs to be in reset to write receive address registers */
2308 if (hw
->mac_type
== e1000_82542_rev2_0
)
2309 e1000_enter_82542_rst(adapter
);
2311 /* load the first 14 multicast address into the exact filters 1-14
2312 * RAR 0 is used for the station MAC adddress
2313 * if there are not 14 addresses, go ahead and clear the filters
2314 * -- with 82571 controllers only 0-13 entries are filled here
2316 mc_ptr
= netdev
->mc_list
;
2318 for (i
= 1; i
< rar_entries
; i
++) {
2320 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2321 mc_ptr
= mc_ptr
->next
;
2323 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2324 E1000_WRITE_FLUSH(hw
);
2325 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2326 E1000_WRITE_FLUSH(hw
);
2330 /* clear the old settings from the multicast hash table */
2332 for (i
= 0; i
< mta_reg_count
; i
++) {
2333 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2334 E1000_WRITE_FLUSH(hw
);
2337 /* load any remaining addresses into the hash table */
2339 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2340 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2341 e1000_mta_set(hw
, hash_value
);
2344 if (hw
->mac_type
== e1000_82542_rev2_0
)
2345 e1000_leave_82542_rst(adapter
);
2348 /* Need to wait a few seconds after link up to get diagnostic information from
2352 e1000_update_phy_info(unsigned long data
)
2354 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2355 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2359 * e1000_82547_tx_fifo_stall - Timer Call-back
2360 * @data: pointer to adapter cast into an unsigned long
2364 e1000_82547_tx_fifo_stall(unsigned long data
)
2366 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2367 struct net_device
*netdev
= adapter
->netdev
;
2370 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2371 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2372 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2373 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2374 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2375 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2376 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2377 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2378 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2379 tctl
& ~E1000_TCTL_EN
);
2380 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2381 adapter
->tx_head_addr
);
2382 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2383 adapter
->tx_head_addr
);
2384 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2385 adapter
->tx_head_addr
);
2386 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2387 adapter
->tx_head_addr
);
2388 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2389 E1000_WRITE_FLUSH(&adapter
->hw
);
2391 adapter
->tx_fifo_head
= 0;
2392 atomic_set(&adapter
->tx_fifo_stall
, 0);
2393 netif_wake_queue(netdev
);
2395 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2401 * e1000_watchdog - Timer Call-back
2402 * @data: pointer to adapter cast into an unsigned long
2405 e1000_watchdog(unsigned long data
)
2407 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2408 struct net_device
*netdev
= adapter
->netdev
;
2409 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2410 uint32_t link
, tctl
;
2413 ret_val
= e1000_check_for_link(&adapter
->hw
);
2414 if ((ret_val
== E1000_ERR_PHY
) &&
2415 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2416 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2417 /* See e1000_kumeran_lock_loss_workaround() */
2419 "Gigabit has been disabled, downgrading speed\n");
2421 if (adapter
->hw
.mac_type
== e1000_82573
) {
2422 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2423 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2424 e1000_update_mng_vlan(adapter
);
2427 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2428 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2429 link
= !adapter
->hw
.serdes_link_down
;
2431 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2434 if (!netif_carrier_ok(netdev
)) {
2435 boolean_t txb2b
= 1;
2436 e1000_get_speed_and_duplex(&adapter
->hw
,
2437 &adapter
->link_speed
,
2438 &adapter
->link_duplex
);
2440 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2441 adapter
->link_speed
,
2442 adapter
->link_duplex
== FULL_DUPLEX
?
2443 "Full Duplex" : "Half Duplex");
2445 /* tweak tx_queue_len according to speed/duplex
2446 * and adjust the timeout factor */
2447 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2448 adapter
->tx_timeout_factor
= 1;
2449 switch (adapter
->link_speed
) {
2452 netdev
->tx_queue_len
= 10;
2453 adapter
->tx_timeout_factor
= 8;
2457 netdev
->tx_queue_len
= 100;
2458 /* maybe add some timeout factor ? */
2462 if ((adapter
->hw
.mac_type
== e1000_82571
||
2463 adapter
->hw
.mac_type
== e1000_82572
) &&
2465 #define SPEED_MODE_BIT (1 << 21)
2467 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2468 tarc0
&= ~SPEED_MODE_BIT
;
2469 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2473 /* disable TSO for pcie and 10/100 speeds, to avoid
2474 * some hardware issues */
2475 if (!adapter
->tso_force
&&
2476 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2477 switch (adapter
->link_speed
) {
2481 "10/100 speed: disabling TSO\n");
2482 netdev
->features
&= ~NETIF_F_TSO
;
2485 netdev
->features
|= NETIF_F_TSO
;
2494 /* enable transmits in the hardware, need to do this
2495 * after setting TARC0 */
2496 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2497 tctl
|= E1000_TCTL_EN
;
2498 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2500 netif_carrier_on(netdev
);
2501 netif_wake_queue(netdev
);
2502 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2503 adapter
->smartspeed
= 0;
2506 if (netif_carrier_ok(netdev
)) {
2507 adapter
->link_speed
= 0;
2508 adapter
->link_duplex
= 0;
2509 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2510 netif_carrier_off(netdev
);
2511 netif_stop_queue(netdev
);
2512 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2514 /* 80003ES2LAN workaround--
2515 * For packet buffer work-around on link down event;
2516 * disable receives in the ISR and
2517 * reset device here in the watchdog
2519 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2521 schedule_work(&adapter
->reset_task
);
2524 e1000_smartspeed(adapter
);
2527 e1000_update_stats(adapter
);
2529 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2530 adapter
->tpt_old
= adapter
->stats
.tpt
;
2531 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2532 adapter
->colc_old
= adapter
->stats
.colc
;
2534 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2535 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2536 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2537 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2539 e1000_update_adaptive(&adapter
->hw
);
2541 if (!netif_carrier_ok(netdev
)) {
2542 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2543 /* We've lost link, so the controller stops DMA,
2544 * but we've got queued Tx work that's never going
2545 * to get done, so reset controller to flush Tx.
2546 * (Do the reset outside of interrupt context). */
2547 adapter
->tx_timeout_count
++;
2548 schedule_work(&adapter
->reset_task
);
2552 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2553 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2554 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2555 * asymmetrical Tx or Rx gets ITR=8000; everyone
2556 * else is between 2000-8000. */
2557 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2558 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2559 adapter
->gotcl
- adapter
->gorcl
:
2560 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2561 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2562 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2565 /* Cause software interrupt to ensure rx ring is cleaned */
2566 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2568 /* Force detection of hung controller every watchdog period */
2569 adapter
->detect_tx_hung
= TRUE
;
2571 /* With 82571 controllers, LAA may be overwritten due to controller
2572 * reset from the other port. Set the appropriate LAA in RAR[0] */
2573 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2574 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2576 /* Reset the timer */
2577 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2580 #define E1000_TX_FLAGS_CSUM 0x00000001
2581 #define E1000_TX_FLAGS_VLAN 0x00000002
2582 #define E1000_TX_FLAGS_TSO 0x00000004
2583 #define E1000_TX_FLAGS_IPV4 0x00000008
2584 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2585 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2588 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2589 struct sk_buff
*skb
)
2592 struct e1000_context_desc
*context_desc
;
2593 struct e1000_buffer
*buffer_info
;
2595 uint32_t cmd_length
= 0;
2596 uint16_t ipcse
= 0, tucse
, mss
;
2597 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2600 if (skb_is_gso(skb
)) {
2601 if (skb_header_cloned(skb
)) {
2602 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2607 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2608 mss
= skb_shinfo(skb
)->gso_size
;
2609 if (skb
->protocol
== htons(ETH_P_IP
)) {
2610 skb
->nh
.iph
->tot_len
= 0;
2611 skb
->nh
.iph
->check
= 0;
2613 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2618 cmd_length
= E1000_TXD_CMD_IP
;
2619 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2620 #ifdef NETIF_F_TSO_IPV6
2621 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2622 skb
->nh
.ipv6h
->payload_len
= 0;
2624 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2625 &skb
->nh
.ipv6h
->daddr
,
2632 ipcss
= skb
->nh
.raw
- skb
->data
;
2633 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2634 tucss
= skb
->h
.raw
- skb
->data
;
2635 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2638 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2639 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2641 i
= tx_ring
->next_to_use
;
2642 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2643 buffer_info
= &tx_ring
->buffer_info
[i
];
2645 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2646 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2647 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2648 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2649 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2650 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2651 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2652 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2653 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2655 buffer_info
->time_stamp
= jiffies
;
2657 if (++i
== tx_ring
->count
) i
= 0;
2658 tx_ring
->next_to_use
= i
;
2668 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2669 struct sk_buff
*skb
)
2671 struct e1000_context_desc
*context_desc
;
2672 struct e1000_buffer
*buffer_info
;
2676 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2677 css
= skb
->h
.raw
- skb
->data
;
2679 i
= tx_ring
->next_to_use
;
2680 buffer_info
= &tx_ring
->buffer_info
[i
];
2681 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2683 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2684 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2685 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2686 context_desc
->tcp_seg_setup
.data
= 0;
2687 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2689 buffer_info
->time_stamp
= jiffies
;
2691 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2692 tx_ring
->next_to_use
= i
;
2700 #define E1000_MAX_TXD_PWR 12
2701 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2704 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2705 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2706 unsigned int nr_frags
, unsigned int mss
)
2708 struct e1000_buffer
*buffer_info
;
2709 unsigned int len
= skb
->len
;
2710 unsigned int offset
= 0, size
, count
= 0, i
;
2712 len
-= skb
->data_len
;
2714 i
= tx_ring
->next_to_use
;
2717 buffer_info
= &tx_ring
->buffer_info
[i
];
2718 size
= min(len
, max_per_txd
);
2720 /* Workaround for Controller erratum --
2721 * descriptor for non-tso packet in a linear SKB that follows a
2722 * tso gets written back prematurely before the data is fully
2723 * DMA'd to the controller */
2724 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2726 tx_ring
->last_tx_tso
= 0;
2730 /* Workaround for premature desc write-backs
2731 * in TSO mode. Append 4-byte sentinel desc */
2732 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2735 /* work-around for errata 10 and it applies
2736 * to all controllers in PCI-X mode
2737 * The fix is to make sure that the first descriptor of a
2738 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2740 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2741 (size
> 2015) && count
== 0))
2744 /* Workaround for potential 82544 hang in PCI-X. Avoid
2745 * terminating buffers within evenly-aligned dwords. */
2746 if (unlikely(adapter
->pcix_82544
&&
2747 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2751 buffer_info
->length
= size
;
2753 pci_map_single(adapter
->pdev
,
2757 buffer_info
->time_stamp
= jiffies
;
2762 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2765 for (f
= 0; f
< nr_frags
; f
++) {
2766 struct skb_frag_struct
*frag
;
2768 frag
= &skb_shinfo(skb
)->frags
[f
];
2770 offset
= frag
->page_offset
;
2773 buffer_info
= &tx_ring
->buffer_info
[i
];
2774 size
= min(len
, max_per_txd
);
2776 /* Workaround for premature desc write-backs
2777 * in TSO mode. Append 4-byte sentinel desc */
2778 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2781 /* Workaround for potential 82544 hang in PCI-X.
2782 * Avoid terminating buffers within evenly-aligned
2784 if (unlikely(adapter
->pcix_82544
&&
2785 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2789 buffer_info
->length
= size
;
2791 pci_map_page(adapter
->pdev
,
2796 buffer_info
->time_stamp
= jiffies
;
2801 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2805 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2806 tx_ring
->buffer_info
[i
].skb
= skb
;
2807 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2813 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2814 int tx_flags
, int count
)
2816 struct e1000_tx_desc
*tx_desc
= NULL
;
2817 struct e1000_buffer
*buffer_info
;
2818 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2821 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2822 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2824 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2826 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2827 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2830 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2831 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2832 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2835 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2836 txd_lower
|= E1000_TXD_CMD_VLE
;
2837 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2840 i
= tx_ring
->next_to_use
;
2843 buffer_info
= &tx_ring
->buffer_info
[i
];
2844 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2845 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2846 tx_desc
->lower
.data
=
2847 cpu_to_le32(txd_lower
| buffer_info
->length
);
2848 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2849 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2852 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2854 /* Force memory writes to complete before letting h/w
2855 * know there are new descriptors to fetch. (Only
2856 * applicable for weak-ordered memory model archs,
2857 * such as IA-64). */
2860 tx_ring
->next_to_use
= i
;
2861 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2865 * 82547 workaround to avoid controller hang in half-duplex environment.
2866 * The workaround is to avoid queuing a large packet that would span
2867 * the internal Tx FIFO ring boundary by notifying the stack to resend
2868 * the packet at a later time. This gives the Tx FIFO an opportunity to
2869 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2870 * to the beginning of the Tx FIFO.
2873 #define E1000_FIFO_HDR 0x10
2874 #define E1000_82547_PAD_LEN 0x3E0
2877 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2879 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2880 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2882 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2884 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2885 goto no_fifo_stall_required
;
2887 if (atomic_read(&adapter
->tx_fifo_stall
))
2890 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2891 atomic_set(&adapter
->tx_fifo_stall
, 1);
2895 no_fifo_stall_required
:
2896 adapter
->tx_fifo_head
+= skb_fifo_len
;
2897 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2898 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2902 #define MINIMUM_DHCP_PACKET_SIZE 282
2904 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2906 struct e1000_hw
*hw
= &adapter
->hw
;
2907 uint16_t length
, offset
;
2908 if (vlan_tx_tag_present(skb
)) {
2909 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2910 ( adapter
->hw
.mng_cookie
.status
&
2911 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2914 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2915 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2916 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2917 const struct iphdr
*ip
=
2918 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2919 if (IPPROTO_UDP
== ip
->protocol
) {
2920 struct udphdr
*udp
=
2921 (struct udphdr
*)((uint8_t *)ip
+
2923 if (ntohs(udp
->dest
) == 67) {
2924 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2925 length
= skb
->len
- offset
;
2927 return e1000_mng_write_dhcp_info(hw
,
2937 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
2939 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2940 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
2942 netif_stop_queue(netdev
);
2943 /* Herbert's original patch had:
2944 * smp_mb__after_netif_stop_queue();
2945 * but since that doesn't exist yet, just open code it. */
2948 /* We need to check again in a case another CPU has just
2949 * made room available. */
2950 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
2954 netif_start_queue(netdev
);
2958 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
2959 struct e1000_tx_ring
*tx_ring
, int size
)
2961 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
2963 return __e1000_maybe_stop_tx(netdev
, size
);
2966 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2968 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2970 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2971 struct e1000_tx_ring
*tx_ring
;
2972 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2973 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2974 unsigned int tx_flags
= 0;
2975 unsigned int len
= skb
->len
;
2976 unsigned long flags
;
2977 unsigned int nr_frags
= 0;
2978 unsigned int mss
= 0;
2982 len
-= skb
->data_len
;
2984 /* This goes back to the question of how to logically map a tx queue
2985 * to a flow. Right now, performance is impacted slightly negatively
2986 * if using multiple tx queues. If the stack breaks away from a
2987 * single qdisc implementation, we can look at this again. */
2988 tx_ring
= adapter
->tx_ring
;
2990 if (unlikely(skb
->len
<= 0)) {
2991 dev_kfree_skb_any(skb
);
2992 return NETDEV_TX_OK
;
2995 /* 82571 and newer doesn't need the workaround that limited descriptor
2997 if (adapter
->hw
.mac_type
>= e1000_82571
)
3001 mss
= skb_shinfo(skb
)->gso_size
;
3002 /* The controller does a simple calculation to
3003 * make sure there is enough room in the FIFO before
3004 * initiating the DMA for each buffer. The calc is:
3005 * 4 = ceil(buffer len/mss). To make sure we don't
3006 * overrun the FIFO, adjust the max buffer len if mss
3010 max_per_txd
= min(mss
<< 2, max_per_txd
);
3011 max_txd_pwr
= fls(max_per_txd
) - 1;
3013 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3014 * points to just header, pull a few bytes of payload from
3015 * frags into skb->data */
3016 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3017 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3018 switch (adapter
->hw
.mac_type
) {
3019 unsigned int pull_size
;
3024 pull_size
= min((unsigned int)4, skb
->data_len
);
3025 if (!__pskb_pull_tail(skb
, pull_size
)) {
3027 "__pskb_pull_tail failed.\n");
3028 dev_kfree_skb_any(skb
);
3029 return NETDEV_TX_OK
;
3031 len
= skb
->len
- skb
->data_len
;
3040 /* reserve a descriptor for the offload context */
3041 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3045 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3050 /* Controller Erratum workaround */
3051 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3055 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3057 if (adapter
->pcix_82544
)
3060 /* work-around for errata 10 and it applies to all controllers
3061 * in PCI-X mode, so add one more descriptor to the count
3063 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3067 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3068 for (f
= 0; f
< nr_frags
; f
++)
3069 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3071 if (adapter
->pcix_82544
)
3075 if (adapter
->hw
.tx_pkt_filtering
&&
3076 (adapter
->hw
.mac_type
== e1000_82573
))
3077 e1000_transfer_dhcp_info(adapter
, skb
);
3079 local_irq_save(flags
);
3080 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3081 /* Collision - tell upper layer to requeue */
3082 local_irq_restore(flags
);
3083 return NETDEV_TX_LOCKED
;
3086 /* need: count + 2 desc gap to keep tail from touching
3087 * head, otherwise try next time */
3088 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3089 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3090 return NETDEV_TX_BUSY
;
3093 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3094 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3095 netif_stop_queue(netdev
);
3096 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3097 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3098 return NETDEV_TX_BUSY
;
3102 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3103 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3104 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3107 first
= tx_ring
->next_to_use
;
3109 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3111 dev_kfree_skb_any(skb
);
3112 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3113 return NETDEV_TX_OK
;
3117 tx_ring
->last_tx_tso
= 1;
3118 tx_flags
|= E1000_TX_FLAGS_TSO
;
3119 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3120 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3122 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3123 * 82571 hardware supports TSO capabilities for IPv6 as well...
3124 * no longer assume, we must. */
3125 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3126 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3128 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3129 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3130 max_per_txd
, nr_frags
, mss
));
3132 netdev
->trans_start
= jiffies
;
3134 /* Make sure there is space in the ring for the next send. */
3135 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3137 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3138 return NETDEV_TX_OK
;
3142 * e1000_tx_timeout - Respond to a Tx Hang
3143 * @netdev: network interface device structure
3147 e1000_tx_timeout(struct net_device
*netdev
)
3149 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3151 /* Do the reset outside of interrupt context */
3152 adapter
->tx_timeout_count
++;
3153 schedule_work(&adapter
->reset_task
);
3157 e1000_reset_task(struct net_device
*netdev
)
3159 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3161 e1000_reinit_locked(adapter
);
3165 * e1000_get_stats - Get System Network Statistics
3166 * @netdev: network interface device structure
3168 * Returns the address of the device statistics structure.
3169 * The statistics are actually updated from the timer callback.
3172 static struct net_device_stats
*
3173 e1000_get_stats(struct net_device
*netdev
)
3175 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3177 /* only return the current stats */
3178 return &adapter
->net_stats
;
3182 * e1000_change_mtu - Change the Maximum Transfer Unit
3183 * @netdev: network interface device structure
3184 * @new_mtu: new value for maximum frame size
3186 * Returns 0 on success, negative on failure
3190 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3192 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3193 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3194 uint16_t eeprom_data
= 0;
3196 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3197 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3198 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3202 /* Adapter-specific max frame size limits. */
3203 switch (adapter
->hw
.mac_type
) {
3204 case e1000_undefined
... e1000_82542_rev2_1
:
3206 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3207 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3212 /* Jumbo Frames not supported if:
3213 * - this is not an 82573L device
3214 * - ASPM is enabled in any way (0x1A bits 3:2) */
3215 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3217 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3218 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3219 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3221 "Jumbo Frames not supported.\n");
3226 /* ERT will be enabled later to enable wire speed receives */
3228 /* fall through to get support */
3231 case e1000_80003es2lan
:
3232 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3233 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3234 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3239 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3243 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3244 * means we reserve 2 more, this pushes us to allocate from the next
3246 * i.e. RXBUFFER_2048 --> size-4096 slab */
3248 if (max_frame
<= E1000_RXBUFFER_256
)
3249 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3250 else if (max_frame
<= E1000_RXBUFFER_512
)
3251 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3252 else if (max_frame
<= E1000_RXBUFFER_1024
)
3253 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3254 else if (max_frame
<= E1000_RXBUFFER_2048
)
3255 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3256 else if (max_frame
<= E1000_RXBUFFER_4096
)
3257 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3258 else if (max_frame
<= E1000_RXBUFFER_8192
)
3259 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3260 else if (max_frame
<= E1000_RXBUFFER_16384
)
3261 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3263 /* adjust allocation if LPE protects us, and we aren't using SBP */
3264 if (!adapter
->hw
.tbi_compatibility_on
&&
3265 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3266 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3267 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3269 netdev
->mtu
= new_mtu
;
3271 if (netif_running(netdev
))
3272 e1000_reinit_locked(adapter
);
3274 adapter
->hw
.max_frame_size
= max_frame
;
3280 * e1000_update_stats - Update the board statistics counters
3281 * @adapter: board private structure
3285 e1000_update_stats(struct e1000_adapter
*adapter
)
3287 struct e1000_hw
*hw
= &adapter
->hw
;
3288 struct pci_dev
*pdev
= adapter
->pdev
;
3289 unsigned long flags
;
3292 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3295 * Prevent stats update while adapter is being reset, or if the pci
3296 * connection is down.
3298 if (adapter
->link_speed
== 0)
3300 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3303 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3305 /* these counters are modified from e1000_adjust_tbi_stats,
3306 * called from the interrupt context, so they must only
3307 * be written while holding adapter->stats_lock
3310 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3311 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3312 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3313 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3314 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3315 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3316 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3318 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3319 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3320 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3321 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3322 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3323 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3324 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3327 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3328 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3329 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3330 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3331 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3332 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3333 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3334 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3335 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3336 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3337 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3338 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3339 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3340 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3341 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3342 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3343 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3344 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3345 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3346 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3347 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3348 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3349 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3350 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3351 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3352 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3354 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3355 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3356 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3357 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3358 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3359 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3360 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3363 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3364 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3366 /* used for adaptive IFS */
3368 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3369 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3370 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3371 adapter
->stats
.colc
+= hw
->collision_delta
;
3373 if (hw
->mac_type
>= e1000_82543
) {
3374 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3375 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3376 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3377 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3378 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3379 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3381 if (hw
->mac_type
> e1000_82547_rev_2
) {
3382 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3383 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3385 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3386 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3387 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3388 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3389 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3390 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3391 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3392 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3396 /* 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 */
3430 if (hw
->media_type
== e1000_media_type_copper
) {
3431 if ((adapter
->link_speed
== SPEED_1000
) &&
3432 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3433 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3434 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3437 if ((hw
->mac_type
<= e1000_82546
) &&
3438 (hw
->phy_type
== e1000_phy_m88
) &&
3439 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3440 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3443 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3447 * e1000_intr - Interrupt Handler
3448 * @irq: interrupt number
3449 * @data: pointer to a network interface device structure
3453 e1000_intr(int irq
, void *data
)
3455 struct net_device
*netdev
= data
;
3456 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3457 struct e1000_hw
*hw
= &adapter
->hw
;
3458 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3459 #ifndef CONFIG_E1000_NAPI
3462 /* Interrupt Auto-Mask...upon reading ICR,
3463 * interrupts are masked. No need for the
3464 * IMC write, but it does mean we should
3465 * account for it ASAP. */
3466 if (likely(hw
->mac_type
>= e1000_82571
))
3467 atomic_inc(&adapter
->irq_sem
);
3470 if (unlikely(!icr
)) {
3471 #ifdef CONFIG_E1000_NAPI
3472 if (hw
->mac_type
>= e1000_82571
)
3473 e1000_irq_enable(adapter
);
3475 return IRQ_NONE
; /* Not our interrupt */
3478 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3479 hw
->get_link_status
= 1;
3480 /* 80003ES2LAN workaround--
3481 * For packet buffer work-around on link down event;
3482 * disable receives here in the ISR and
3483 * reset adapter in watchdog
3485 if (netif_carrier_ok(netdev
) &&
3486 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3487 /* disable receives */
3488 rctl
= E1000_READ_REG(hw
, RCTL
);
3489 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3491 /* guard against interrupt when we're going down */
3492 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3493 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3496 #ifdef CONFIG_E1000_NAPI
3497 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3498 atomic_inc(&adapter
->irq_sem
);
3499 E1000_WRITE_REG(hw
, IMC
, ~0);
3500 E1000_WRITE_FLUSH(hw
);
3502 if (likely(netif_rx_schedule_prep(netdev
)))
3503 __netif_rx_schedule(netdev
);
3505 e1000_irq_enable(adapter
);
3507 /* Writing IMC and IMS is needed for 82547.
3508 * Due to Hub Link bus being occupied, an interrupt
3509 * de-assertion message is not able to be sent.
3510 * When an interrupt assertion message is generated later,
3511 * two messages are re-ordered and sent out.
3512 * That causes APIC to think 82547 is in de-assertion
3513 * state, while 82547 is in assertion state, resulting
3514 * in dead lock. Writing IMC forces 82547 into
3515 * de-assertion state.
3517 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3518 atomic_inc(&adapter
->irq_sem
);
3519 E1000_WRITE_REG(hw
, IMC
, ~0);
3522 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3523 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3524 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3527 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3528 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;
3619 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3620 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3621 #ifdef CONFIG_E1000_NAPI
3622 #define E1000_TX_WEIGHT 64
3623 /* weight of a sort for tx, to avoid endless transmit cleanup */
3624 if (count
++ == E1000_TX_WEIGHT
) break;
3628 tx_ring
->next_to_clean
= i
;
3630 #define TX_WAKE_THRESHOLD 32
3631 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3632 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3633 /* Make sure that anybody stopping the queue after this
3634 * sees the new next_to_clean.
3637 if (netif_queue_stopped(netdev
))
3638 netif_wake_queue(netdev
);
3641 if (adapter
->detect_tx_hung
) {
3642 /* Detect a transmit hang in hardware, this serializes the
3643 * check with the clearing of time_stamp and movement of i */
3644 adapter
->detect_tx_hung
= FALSE
;
3645 if (tx_ring
->buffer_info
[eop
].dma
&&
3646 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3647 (adapter
->tx_timeout_factor
* HZ
))
3648 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3649 E1000_STATUS_TXOFF
)) {
3651 /* detected Tx unit hang */
3652 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3656 " next_to_use <%x>\n"
3657 " next_to_clean <%x>\n"
3658 "buffer_info[next_to_clean]\n"
3659 " time_stamp <%lx>\n"
3660 " next_to_watch <%x>\n"
3662 " next_to_watch.status <%x>\n",
3663 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3664 sizeof(struct e1000_tx_ring
)),
3665 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3666 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3667 tx_ring
->next_to_use
,
3668 tx_ring
->next_to_clean
,
3669 tx_ring
->buffer_info
[eop
].time_stamp
,
3672 eop_desc
->upper
.fields
.status
);
3673 netif_stop_queue(netdev
);
3680 * e1000_rx_checksum - Receive Checksum Offload for 82543
3681 * @adapter: board private structure
3682 * @status_err: receive descriptor status and error fields
3683 * @csum: receive descriptor csum field
3684 * @sk_buff: socket buffer with received data
3688 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3689 uint32_t status_err
, uint32_t csum
,
3690 struct sk_buff
*skb
)
3692 uint16_t status
= (uint16_t)status_err
;
3693 uint8_t errors
= (uint8_t)(status_err
>> 24);
3694 skb
->ip_summed
= CHECKSUM_NONE
;
3696 /* 82543 or newer only */
3697 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3698 /* Ignore Checksum bit is set */
3699 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3700 /* TCP/UDP checksum error bit is set */
3701 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3702 /* let the stack verify checksum errors */
3703 adapter
->hw_csum_err
++;
3706 /* TCP/UDP Checksum has not been calculated */
3707 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3708 if (!(status
& E1000_RXD_STAT_TCPCS
))
3711 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3714 /* It must be a TCP or UDP packet with a valid checksum */
3715 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3716 /* TCP checksum is good */
3717 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3718 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3719 /* IP fragment with UDP payload */
3720 /* Hardware complements the payload checksum, so we undo it
3721 * and then put the value in host order for further stack use.
3723 csum
= ntohl(csum
^ 0xFFFF);
3725 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3727 adapter
->hw_csum_good
++;
3731 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3732 * @adapter: board private structure
3736 #ifdef CONFIG_E1000_NAPI
3737 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3738 struct e1000_rx_ring
*rx_ring
,
3739 int *work_done
, int work_to_do
)
3741 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3742 struct e1000_rx_ring
*rx_ring
)
3745 struct net_device
*netdev
= adapter
->netdev
;
3746 struct pci_dev
*pdev
= adapter
->pdev
;
3747 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3748 struct e1000_buffer
*buffer_info
, *next_buffer
;
3749 unsigned long flags
;
3753 int cleaned_count
= 0;
3754 boolean_t cleaned
= FALSE
;
3756 i
= rx_ring
->next_to_clean
;
3757 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3758 buffer_info
= &rx_ring
->buffer_info
[i
];
3760 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3761 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 /* adjust length to remove Ethernet CRC */
3792 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3793 /* All receives must fit into a single buffer */
3794 E1000_DBG("%s: Receive packet consumed multiple"
3795 " buffers\n", netdev
->name
);
3797 buffer_info
->skb
= skb
;
3801 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3802 last_byte
= *(skb
->data
+ length
- 1);
3803 if (TBI_ACCEPT(&adapter
->hw
, status
,
3804 rx_desc
->errors
, length
, last_byte
)) {
3805 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3806 e1000_tbi_adjust_stats(&adapter
->hw
,
3809 spin_unlock_irqrestore(&adapter
->stats_lock
,
3814 buffer_info
->skb
= skb
;
3819 /* code added for copybreak, this should improve
3820 * performance for small packets with large amounts
3821 * of reassembly being done in the stack */
3822 #define E1000_CB_LENGTH 256
3823 if (length
< E1000_CB_LENGTH
) {
3824 struct sk_buff
*new_skb
=
3825 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
3827 skb_reserve(new_skb
, NET_IP_ALIGN
);
3828 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3829 skb
->data
- NET_IP_ALIGN
,
3830 length
+ NET_IP_ALIGN
);
3831 /* save the skb in buffer_info as good */
3832 buffer_info
->skb
= skb
;
3834 skb_put(skb
, length
);
3837 skb_put(skb
, length
);
3839 /* end copybreak code */
3841 /* Receive Checksum Offload */
3842 e1000_rx_checksum(adapter
,
3843 (uint32_t)(status
) |
3844 ((uint32_t)(rx_desc
->errors
) << 24),
3845 le16_to_cpu(rx_desc
->csum
), skb
);
3847 skb
->protocol
= eth_type_trans(skb
, netdev
);
3848 #ifdef CONFIG_E1000_NAPI
3849 if (unlikely(adapter
->vlgrp
&&
3850 (status
& E1000_RXD_STAT_VP
))) {
3851 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3852 le16_to_cpu(rx_desc
->special
) &
3853 E1000_RXD_SPC_VLAN_MASK
);
3855 netif_receive_skb(skb
);
3857 #else /* CONFIG_E1000_NAPI */
3858 if (unlikely(adapter
->vlgrp
&&
3859 (status
& E1000_RXD_STAT_VP
))) {
3860 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3861 le16_to_cpu(rx_desc
->special
) &
3862 E1000_RXD_SPC_VLAN_MASK
);
3866 #endif /* CONFIG_E1000_NAPI */
3867 netdev
->last_rx
= jiffies
;
3870 rx_desc
->status
= 0;
3872 /* return some buffers to hardware, one at a time is too slow */
3873 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3874 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3878 /* use prefetched values */
3880 buffer_info
= next_buffer
;
3882 rx_ring
->next_to_clean
= i
;
3884 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3886 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3892 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3893 * @adapter: board private structure
3897 #ifdef CONFIG_E1000_NAPI
3898 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3899 struct e1000_rx_ring
*rx_ring
,
3900 int *work_done
, int work_to_do
)
3902 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3903 struct e1000_rx_ring
*rx_ring
)
3906 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3907 struct net_device
*netdev
= adapter
->netdev
;
3908 struct pci_dev
*pdev
= adapter
->pdev
;
3909 struct e1000_buffer
*buffer_info
, *next_buffer
;
3910 struct e1000_ps_page
*ps_page
;
3911 struct e1000_ps_page_dma
*ps_page_dma
;
3912 struct sk_buff
*skb
;
3914 uint32_t length
, staterr
;
3915 int cleaned_count
= 0;
3916 boolean_t cleaned
= FALSE
;
3918 i
= rx_ring
->next_to_clean
;
3919 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3920 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3921 buffer_info
= &rx_ring
->buffer_info
[i
];
3923 while (staterr
& E1000_RXD_STAT_DD
) {
3924 ps_page
= &rx_ring
->ps_page
[i
];
3925 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3926 #ifdef CONFIG_E1000_NAPI
3927 if (unlikely(*work_done
>= work_to_do
))
3931 skb
= buffer_info
->skb
;
3933 /* in the packet split case this is header only */
3934 prefetch(skb
->data
- NET_IP_ALIGN
);
3936 if (++i
== rx_ring
->count
) i
= 0;
3937 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3940 next_buffer
= &rx_ring
->buffer_info
[i
];
3944 pci_unmap_single(pdev
, buffer_info
->dma
,
3945 buffer_info
->length
,
3946 PCI_DMA_FROMDEVICE
);
3948 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3949 E1000_DBG("%s: Packet Split buffers didn't pick up"
3950 " the full packet\n", netdev
->name
);
3951 dev_kfree_skb_irq(skb
);
3955 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3956 dev_kfree_skb_irq(skb
);
3960 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3962 if (unlikely(!length
)) {
3963 E1000_DBG("%s: Last part of the packet spanning"
3964 " multiple descriptors\n", netdev
->name
);
3965 dev_kfree_skb_irq(skb
);
3970 skb_put(skb
, length
);
3973 /* this looks ugly, but it seems compiler issues make it
3974 more efficient than reusing j */
3975 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3977 /* page alloc/put takes too long and effects small packet
3978 * throughput, so unsplit small packets and save the alloc/put*/
3979 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3981 /* there is no documentation about how to call
3982 * kmap_atomic, so we can't hold the mapping
3984 pci_dma_sync_single_for_cpu(pdev
,
3985 ps_page_dma
->ps_page_dma
[0],
3987 PCI_DMA_FROMDEVICE
);
3988 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3989 KM_SKB_DATA_SOFTIRQ
);
3990 memcpy(skb
->tail
, vaddr
, l1
);
3991 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3992 pci_dma_sync_single_for_device(pdev
,
3993 ps_page_dma
->ps_page_dma
[0],
3994 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3995 /* remove the CRC */
4002 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4003 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4005 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4006 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4007 ps_page_dma
->ps_page_dma
[j
] = 0;
4008 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4010 ps_page
->ps_page
[j
] = NULL
;
4012 skb
->data_len
+= length
;
4013 skb
->truesize
+= length
;
4016 /* strip the ethernet crc, problem is we're using pages now so
4017 * this whole operation can get a little cpu intensive */
4018 pskb_trim(skb
, skb
->len
- 4);
4021 e1000_rx_checksum(adapter
, staterr
,
4022 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4023 skb
->protocol
= eth_type_trans(skb
, netdev
);
4025 if (likely(rx_desc
->wb
.upper
.header_status
&
4026 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4027 adapter
->rx_hdr_split
++;
4028 #ifdef CONFIG_E1000_NAPI
4029 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4030 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4031 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4032 E1000_RXD_SPC_VLAN_MASK
);
4034 netif_receive_skb(skb
);
4036 #else /* CONFIG_E1000_NAPI */
4037 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4038 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4039 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4040 E1000_RXD_SPC_VLAN_MASK
);
4044 #endif /* CONFIG_E1000_NAPI */
4045 netdev
->last_rx
= jiffies
;
4048 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4049 buffer_info
->skb
= NULL
;
4051 /* return some buffers to hardware, one at a time is too slow */
4052 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4053 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4057 /* use prefetched values */
4059 buffer_info
= next_buffer
;
4061 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4063 rx_ring
->next_to_clean
= i
;
4065 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4067 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4073 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4074 * @adapter: address of board private structure
4078 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4079 struct e1000_rx_ring
*rx_ring
,
4082 struct net_device
*netdev
= adapter
->netdev
;
4083 struct pci_dev
*pdev
= adapter
->pdev
;
4084 struct e1000_rx_desc
*rx_desc
;
4085 struct e1000_buffer
*buffer_info
;
4086 struct sk_buff
*skb
;
4088 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4090 i
= rx_ring
->next_to_use
;
4091 buffer_info
= &rx_ring
->buffer_info
[i
];
4093 while (cleaned_count
--) {
4094 skb
= buffer_info
->skb
;
4100 skb
= netdev_alloc_skb(netdev
, bufsz
);
4101 if (unlikely(!skb
)) {
4102 /* Better luck next round */
4103 adapter
->alloc_rx_buff_failed
++;
4107 /* Fix for errata 23, can't cross 64kB boundary */
4108 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4109 struct sk_buff
*oldskb
= skb
;
4110 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4111 "at %p\n", bufsz
, skb
->data
);
4112 /* Try again, without freeing the previous */
4113 skb
= netdev_alloc_skb(netdev
, bufsz
);
4114 /* Failed allocation, critical failure */
4116 dev_kfree_skb(oldskb
);
4120 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4123 dev_kfree_skb(oldskb
);
4124 break; /* while !buffer_info->skb */
4127 /* Use new allocation */
4128 dev_kfree_skb(oldskb
);
4130 /* Make buffer alignment 2 beyond a 16 byte boundary
4131 * this will result in a 16 byte aligned IP header after
4132 * the 14 byte MAC header is removed
4134 skb_reserve(skb
, NET_IP_ALIGN
);
4136 buffer_info
->skb
= skb
;
4137 buffer_info
->length
= adapter
->rx_buffer_len
;
4139 buffer_info
->dma
= pci_map_single(pdev
,
4141 adapter
->rx_buffer_len
,
4142 PCI_DMA_FROMDEVICE
);
4144 /* Fix for errata 23, can't cross 64kB boundary */
4145 if (!e1000_check_64k_bound(adapter
,
4146 (void *)(unsigned long)buffer_info
->dma
,
4147 adapter
->rx_buffer_len
)) {
4148 DPRINTK(RX_ERR
, ERR
,
4149 "dma align check failed: %u bytes at %p\n",
4150 adapter
->rx_buffer_len
,
4151 (void *)(unsigned long)buffer_info
->dma
);
4153 buffer_info
->skb
= NULL
;
4155 pci_unmap_single(pdev
, buffer_info
->dma
,
4156 adapter
->rx_buffer_len
,
4157 PCI_DMA_FROMDEVICE
);
4159 break; /* while !buffer_info->skb */
4161 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4162 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4164 if (unlikely(++i
== rx_ring
->count
))
4166 buffer_info
= &rx_ring
->buffer_info
[i
];
4169 if (likely(rx_ring
->next_to_use
!= i
)) {
4170 rx_ring
->next_to_use
= i
;
4171 if (unlikely(i
-- == 0))
4172 i
= (rx_ring
->count
- 1);
4174 /* Force memory writes to complete before letting h/w
4175 * know there are new descriptors to fetch. (Only
4176 * applicable for weak-ordered memory model archs,
4177 * such as IA-64). */
4179 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4184 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4185 * @adapter: address of board private structure
4189 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4190 struct e1000_rx_ring
*rx_ring
,
4193 struct net_device
*netdev
= adapter
->netdev
;
4194 struct pci_dev
*pdev
= adapter
->pdev
;
4195 union e1000_rx_desc_packet_split
*rx_desc
;
4196 struct e1000_buffer
*buffer_info
;
4197 struct e1000_ps_page
*ps_page
;
4198 struct e1000_ps_page_dma
*ps_page_dma
;
4199 struct sk_buff
*skb
;
4202 i
= rx_ring
->next_to_use
;
4203 buffer_info
= &rx_ring
->buffer_info
[i
];
4204 ps_page
= &rx_ring
->ps_page
[i
];
4205 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4207 while (cleaned_count
--) {
4208 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4210 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4211 if (j
< adapter
->rx_ps_pages
) {
4212 if (likely(!ps_page
->ps_page
[j
])) {
4213 ps_page
->ps_page
[j
] =
4214 alloc_page(GFP_ATOMIC
);
4215 if (unlikely(!ps_page
->ps_page
[j
])) {
4216 adapter
->alloc_rx_buff_failed
++;
4219 ps_page_dma
->ps_page_dma
[j
] =
4221 ps_page
->ps_page
[j
],
4223 PCI_DMA_FROMDEVICE
);
4225 /* Refresh the desc even if buffer_addrs didn't
4226 * change because each write-back erases
4229 rx_desc
->read
.buffer_addr
[j
+1] =
4230 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4232 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4235 skb
= netdev_alloc_skb(netdev
,
4236 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4238 if (unlikely(!skb
)) {
4239 adapter
->alloc_rx_buff_failed
++;
4243 /* Make buffer alignment 2 beyond a 16 byte boundary
4244 * this will result in a 16 byte aligned IP header after
4245 * the 14 byte MAC header is removed
4247 skb_reserve(skb
, NET_IP_ALIGN
);
4249 buffer_info
->skb
= skb
;
4250 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4251 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4252 adapter
->rx_ps_bsize0
,
4253 PCI_DMA_FROMDEVICE
);
4255 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4257 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4258 buffer_info
= &rx_ring
->buffer_info
[i
];
4259 ps_page
= &rx_ring
->ps_page
[i
];
4260 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4264 if (likely(rx_ring
->next_to_use
!= i
)) {
4265 rx_ring
->next_to_use
= i
;
4266 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4268 /* Force memory writes to complete before letting h/w
4269 * know there are new descriptors to fetch. (Only
4270 * applicable for weak-ordered memory model archs,
4271 * such as IA-64). */
4273 /* Hardware increments by 16 bytes, but packet split
4274 * descriptors are 32 bytes...so we increment tail
4277 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4282 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4287 e1000_smartspeed(struct e1000_adapter
*adapter
)
4289 uint16_t phy_status
;
4292 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4293 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4296 if (adapter
->smartspeed
== 0) {
4297 /* If Master/Slave config fault is asserted twice,
4298 * we assume back-to-back */
4299 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4300 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4301 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4302 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4303 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4304 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4305 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4306 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4308 adapter
->smartspeed
++;
4309 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4310 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4312 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4313 MII_CR_RESTART_AUTO_NEG
);
4314 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4319 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4320 /* If still no link, perhaps using 2/3 pair cable */
4321 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4322 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4323 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4324 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4325 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4326 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4327 MII_CR_RESTART_AUTO_NEG
);
4328 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4331 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4332 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4333 adapter
->smartspeed
= 0;
4344 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4350 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4364 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4366 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4367 struct mii_ioctl_data
*data
= if_mii(ifr
);
4371 unsigned long flags
;
4373 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4378 data
->phy_id
= adapter
->hw
.phy_addr
;
4381 if (!capable(CAP_NET_ADMIN
))
4383 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4384 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4386 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4389 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4392 if (!capable(CAP_NET_ADMIN
))
4394 if (data
->reg_num
& ~(0x1F))
4396 mii_reg
= data
->val_in
;
4397 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4398 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4400 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4403 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4404 switch (data
->reg_num
) {
4406 if (mii_reg
& MII_CR_POWER_DOWN
)
4408 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4409 adapter
->hw
.autoneg
= 1;
4410 adapter
->hw
.autoneg_advertised
= 0x2F;
4413 spddplx
= SPEED_1000
;
4414 else if (mii_reg
& 0x2000)
4415 spddplx
= SPEED_100
;
4418 spddplx
+= (mii_reg
& 0x100)
4421 retval
= e1000_set_spd_dplx(adapter
,
4424 spin_unlock_irqrestore(
4425 &adapter
->stats_lock
,
4430 if (netif_running(adapter
->netdev
))
4431 e1000_reinit_locked(adapter
);
4433 e1000_reset(adapter
);
4435 case M88E1000_PHY_SPEC_CTRL
:
4436 case M88E1000_EXT_PHY_SPEC_CTRL
:
4437 if (e1000_phy_reset(&adapter
->hw
)) {
4438 spin_unlock_irqrestore(
4439 &adapter
->stats_lock
, flags
);
4445 switch (data
->reg_num
) {
4447 if (mii_reg
& MII_CR_POWER_DOWN
)
4449 if (netif_running(adapter
->netdev
))
4450 e1000_reinit_locked(adapter
);
4452 e1000_reset(adapter
);
4456 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4461 return E1000_SUCCESS
;
4465 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4467 struct e1000_adapter
*adapter
= hw
->back
;
4468 int ret_val
= pci_set_mwi(adapter
->pdev
);
4471 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4475 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4477 struct e1000_adapter
*adapter
= hw
->back
;
4479 pci_clear_mwi(adapter
->pdev
);
4483 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4485 struct e1000_adapter
*adapter
= hw
->back
;
4487 pci_read_config_word(adapter
->pdev
, reg
, value
);
4491 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4493 struct e1000_adapter
*adapter
= hw
->back
;
4495 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4499 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4501 struct e1000_adapter
*adapter
= hw
->back
;
4502 uint16_t cap_offset
;
4504 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4506 return -E1000_ERR_CONFIG
;
4508 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4510 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
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4555 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4556 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4561 e1000_irq_enable(adapter
);
4565 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4567 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4568 uint32_t vfta
, index
;
4570 if ((adapter
->hw
.mng_cookie
.status
&
4571 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4572 (vid
== adapter
->mng_vlan_id
))
4574 /* add VID to filter table */
4575 index
= (vid
>> 5) & 0x7F;
4576 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4577 vfta
|= (1 << (vid
& 0x1F));
4578 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4582 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4584 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4585 uint32_t vfta
, index
;
4587 e1000_irq_disable(adapter
);
4590 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4592 e1000_irq_enable(adapter
);
4594 if ((adapter
->hw
.mng_cookie
.status
&
4595 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4596 (vid
== adapter
->mng_vlan_id
)) {
4597 /* release control to f/w */
4598 e1000_release_hw_control(adapter
);
4602 /* remove VID from filter table */
4603 index
= (vid
>> 5) & 0x7F;
4604 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4605 vfta
&= ~(1 << (vid
& 0x1F));
4606 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4610 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4612 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4614 if (adapter
->vlgrp
) {
4616 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4617 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4619 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4625 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4627 adapter
->hw
.autoneg
= 0;
4629 /* Fiber NICs only allow 1000 gbps Full duplex */
4630 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4631 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4632 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4637 case SPEED_10
+ DUPLEX_HALF
:
4638 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4640 case SPEED_10
+ DUPLEX_FULL
:
4641 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4643 case SPEED_100
+ DUPLEX_HALF
:
4644 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4646 case SPEED_100
+ DUPLEX_FULL
:
4647 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4649 case SPEED_1000
+ DUPLEX_FULL
:
4650 adapter
->hw
.autoneg
= 1;
4651 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4653 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4655 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4662 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4663 * bus we're on (PCI(X) vs. PCI-E)
4665 #define PCIE_CONFIG_SPACE_LEN 256
4666 #define PCI_CONFIG_SPACE_LEN 64
4668 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4670 struct pci_dev
*dev
= adapter
->pdev
;
4674 if (adapter
->hw
.mac_type
>= e1000_82571
)
4675 size
= PCIE_CONFIG_SPACE_LEN
;
4677 size
= PCI_CONFIG_SPACE_LEN
;
4679 WARN_ON(adapter
->config_space
!= NULL
);
4681 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4682 if (!adapter
->config_space
) {
4683 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4686 for (i
= 0; i
< (size
/ 4); i
++)
4687 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4692 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4694 struct pci_dev
*dev
= adapter
->pdev
;
4698 if (adapter
->config_space
== NULL
)
4701 if (adapter
->hw
.mac_type
>= e1000_82571
)
4702 size
= PCIE_CONFIG_SPACE_LEN
;
4704 size
= PCI_CONFIG_SPACE_LEN
;
4705 for (i
= 0; i
< (size
/ 4); i
++)
4706 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4707 kfree(adapter
->config_space
);
4708 adapter
->config_space
= NULL
;
4711 #endif /* CONFIG_PM */
4714 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4716 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4717 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4718 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4719 uint32_t wufc
= adapter
->wol
;
4724 netif_device_detach(netdev
);
4726 if (netif_running(netdev
)) {
4727 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4728 e1000_down(adapter
);
4732 /* Implement our own version of pci_save_state(pdev) because pci-
4733 * express adapters have 256-byte config spaces. */
4734 retval
= e1000_pci_save_state(adapter
);
4739 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4740 if (status
& E1000_STATUS_LU
)
4741 wufc
&= ~E1000_WUFC_LNKC
;
4744 e1000_setup_rctl(adapter
);
4745 e1000_set_multi(netdev
);
4747 /* turn on all-multi mode if wake on multicast is enabled */
4748 if (wufc
& E1000_WUFC_MC
) {
4749 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4750 rctl
|= E1000_RCTL_MPE
;
4751 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4754 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4755 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4756 /* advertise wake from D3Cold */
4757 #define E1000_CTRL_ADVD3WUC 0x00100000
4758 /* phy power management enable */
4759 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4760 ctrl
|= E1000_CTRL_ADVD3WUC
|
4761 E1000_CTRL_EN_PHY_PWR_MGMT
;
4762 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4765 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4766 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4767 /* keep the laser running in D3 */
4768 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4769 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4770 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4773 /* Allow time for pending master requests to run */
4774 e1000_disable_pciex_master(&adapter
->hw
);
4776 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4777 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4778 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4779 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4781 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4782 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4783 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4784 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4787 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4788 adapter
->hw
.mac_type
< e1000_82571
&&
4789 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4790 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4791 if (manc
& E1000_MANC_SMBUS_EN
) {
4792 manc
|= E1000_MANC_ARP_EN
;
4793 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4794 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4795 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4799 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
4800 e1000_phy_powerdown_workaround(&adapter
->hw
);
4802 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4803 * would have already happened in close and is redundant. */
4804 e1000_release_hw_control(adapter
);
4806 pci_disable_device(pdev
);
4808 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4815 e1000_resume(struct pci_dev
*pdev
)
4817 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4818 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4821 pci_set_power_state(pdev
, PCI_D0
);
4822 e1000_pci_restore_state(adapter
);
4823 if ((err
= pci_enable_device(pdev
))) {
4824 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4827 pci_set_master(pdev
);
4829 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4830 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4832 e1000_reset(adapter
);
4833 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4835 if (netif_running(netdev
))
4838 netif_device_attach(netdev
);
4840 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4841 adapter
->hw
.mac_type
< e1000_82571
&&
4842 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4843 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4844 manc
&= ~(E1000_MANC_ARP_EN
);
4845 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4848 /* If the controller is 82573 and f/w is AMT, do not set
4849 * DRV_LOAD until the interface is up. For all other cases,
4850 * let the f/w know that the h/w is now under the control
4852 if (adapter
->hw
.mac_type
!= e1000_82573
||
4853 !e1000_check_mng_mode(&adapter
->hw
))
4854 e1000_get_hw_control(adapter
);
4860 static void e1000_shutdown(struct pci_dev
*pdev
)
4862 e1000_suspend(pdev
, PMSG_SUSPEND
);
4865 #ifdef CONFIG_NET_POLL_CONTROLLER
4867 * Polling 'interrupt' - used by things like netconsole to send skbs
4868 * without having to re-enable interrupts. It's not called while
4869 * the interrupt routine is executing.
4872 e1000_netpoll(struct net_device
*netdev
)
4874 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4876 disable_irq(adapter
->pdev
->irq
);
4877 e1000_intr(adapter
->pdev
->irq
, netdev
);
4878 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4879 #ifndef CONFIG_E1000_NAPI
4880 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4882 enable_irq(adapter
->pdev
->irq
);
4887 * e1000_io_error_detected - called when PCI error is detected
4888 * @pdev: Pointer to PCI device
4889 * @state: The current pci conneection state
4891 * This function is called after a PCI bus error affecting
4892 * this device has been detected.
4894 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4896 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4897 struct e1000_adapter
*adapter
= netdev
->priv
;
4899 netif_device_detach(netdev
);
4901 if (netif_running(netdev
))
4902 e1000_down(adapter
);
4903 pci_disable_device(pdev
);
4905 /* Request a slot slot reset. */
4906 return PCI_ERS_RESULT_NEED_RESET
;
4910 * e1000_io_slot_reset - called after the pci bus has been reset.
4911 * @pdev: Pointer to PCI device
4913 * Restart the card from scratch, as if from a cold-boot. Implementation
4914 * resembles the first-half of the e1000_resume routine.
4916 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4918 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4919 struct e1000_adapter
*adapter
= netdev
->priv
;
4921 if (pci_enable_device(pdev
)) {
4922 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4923 return PCI_ERS_RESULT_DISCONNECT
;
4925 pci_set_master(pdev
);
4927 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4928 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4930 e1000_reset(adapter
);
4931 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4933 return PCI_ERS_RESULT_RECOVERED
;
4937 * e1000_io_resume - called when traffic can start flowing again.
4938 * @pdev: Pointer to PCI device
4940 * This callback is called when the error recovery driver tells us that
4941 * its OK to resume normal operation. Implementation resembles the
4942 * second-half of the e1000_resume routine.
4944 static void e1000_io_resume(struct pci_dev
*pdev
)
4946 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4947 struct e1000_adapter
*adapter
= netdev
->priv
;
4948 uint32_t manc
, swsm
;
4950 if (netif_running(netdev
)) {
4951 if (e1000_up(adapter
)) {
4952 printk("e1000: can't bring device back up after reset\n");
4957 netif_device_attach(netdev
);
4959 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4960 adapter
->hw
.mac_type
< e1000_82571
&&
4961 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4962 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4963 manc
&= ~(E1000_MANC_ARP_EN
);
4964 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4967 switch (adapter
->hw
.mac_type
) {
4969 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4970 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4971 swsm
| E1000_SWSM_DRV_LOAD
);
4977 if (netif_running(netdev
))
4978 mod_timer(&adapter
->watchdog_timer
, jiffies
);