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
, struct pt_regs
*regs
);
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
) && (adapter
->hw
.mac_type
< e1000_82571
)) {
703 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
704 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
705 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
710 * e1000_probe - Device Initialization Routine
711 * @pdev: PCI device information struct
712 * @ent: entry in e1000_pci_tbl
714 * Returns 0 on success, negative on failure
716 * e1000_probe initializes an adapter identified by a pci_dev structure.
717 * The OS initialization, configuring of the adapter private structure,
718 * and a hardware reset occur.
722 e1000_probe(struct pci_dev
*pdev
,
723 const struct pci_device_id
*ent
)
725 struct net_device
*netdev
;
726 struct e1000_adapter
*adapter
;
727 unsigned long mmio_start
, mmio_len
;
728 unsigned long flash_start
, flash_len
;
730 static int cards_found
= 0;
731 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
732 int i
, err
, pci_using_dac
;
733 uint16_t eeprom_data
= 0;
734 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
735 if ((err
= pci_enable_device(pdev
)))
738 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
739 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
742 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
743 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
744 E1000_ERR("No usable DMA configuration, aborting\n");
750 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
753 pci_set_master(pdev
);
756 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
758 goto err_alloc_etherdev
;
760 SET_MODULE_OWNER(netdev
);
761 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
763 pci_set_drvdata(pdev
, netdev
);
764 adapter
= netdev_priv(netdev
);
765 adapter
->netdev
= netdev
;
766 adapter
->pdev
= pdev
;
767 adapter
->hw
.back
= adapter
;
768 adapter
->msg_enable
= (1 << debug
) - 1;
770 mmio_start
= pci_resource_start(pdev
, BAR_0
);
771 mmio_len
= pci_resource_len(pdev
, BAR_0
);
774 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
775 if (!adapter
->hw
.hw_addr
)
778 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
779 if (pci_resource_len(pdev
, i
) == 0)
781 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
782 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
787 netdev
->open
= &e1000_open
;
788 netdev
->stop
= &e1000_close
;
789 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
790 netdev
->get_stats
= &e1000_get_stats
;
791 netdev
->set_multicast_list
= &e1000_set_multi
;
792 netdev
->set_mac_address
= &e1000_set_mac
;
793 netdev
->change_mtu
= &e1000_change_mtu
;
794 netdev
->do_ioctl
= &e1000_ioctl
;
795 e1000_set_ethtool_ops(netdev
);
796 netdev
->tx_timeout
= &e1000_tx_timeout
;
797 netdev
->watchdog_timeo
= 5 * HZ
;
798 #ifdef CONFIG_E1000_NAPI
799 netdev
->poll
= &e1000_clean
;
802 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
803 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
804 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
805 #ifdef CONFIG_NET_POLL_CONTROLLER
806 netdev
->poll_controller
= e1000_netpoll
;
808 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
810 netdev
->mem_start
= mmio_start
;
811 netdev
->mem_end
= mmio_start
+ mmio_len
;
812 netdev
->base_addr
= adapter
->hw
.io_base
;
814 adapter
->bd_number
= cards_found
;
816 /* setup the private structure */
818 if ((err
= e1000_sw_init(adapter
)))
822 /* Flash BAR mapping must happen after e1000_sw_init
823 * because it depends on mac_type */
824 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
825 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
826 flash_start
= pci_resource_start(pdev
, 1);
827 flash_len
= pci_resource_len(pdev
, 1);
828 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
829 if (!adapter
->hw
.flash_address
)
833 if (e1000_check_phy_reset_block(&adapter
->hw
))
834 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
836 if (adapter
->hw
.mac_type
>= e1000_82543
) {
837 netdev
->features
= NETIF_F_SG
|
841 NETIF_F_HW_VLAN_FILTER
;
842 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
843 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
847 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
848 (adapter
->hw
.mac_type
!= e1000_82547
))
849 netdev
->features
|= NETIF_F_TSO
;
851 #ifdef NETIF_F_TSO_IPV6
852 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
853 netdev
->features
|= NETIF_F_TSO_IPV6
;
857 netdev
->features
|= NETIF_F_HIGHDMA
;
859 netdev
->features
|= NETIF_F_LLTX
;
861 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
863 /* initialize eeprom parameters */
865 if (e1000_init_eeprom_params(&adapter
->hw
)) {
866 E1000_ERR("EEPROM initialization failed\n");
870 /* before reading the EEPROM, reset the controller to
871 * put the device in a known good starting state */
873 e1000_reset_hw(&adapter
->hw
);
875 /* make sure the EEPROM is good */
877 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
878 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
882 /* copy the MAC address out of the EEPROM */
884 if (e1000_read_mac_addr(&adapter
->hw
))
885 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
886 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
887 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
889 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
890 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
894 e1000_get_bus_info(&adapter
->hw
);
896 init_timer(&adapter
->tx_fifo_stall_timer
);
897 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
898 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
900 init_timer(&adapter
->watchdog_timer
);
901 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
902 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
904 init_timer(&adapter
->phy_info_timer
);
905 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
906 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
908 INIT_WORK(&adapter
->reset_task
,
909 (void (*)(void *))e1000_reset_task
, netdev
);
911 e1000_check_options(adapter
);
913 /* Initial Wake on LAN setting
914 * If APM wake is enabled in the EEPROM,
915 * enable the ACPI Magic Packet filter
918 switch (adapter
->hw
.mac_type
) {
919 case e1000_82542_rev2_0
:
920 case e1000_82542_rev2_1
:
924 e1000_read_eeprom(&adapter
->hw
,
925 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
926 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
929 e1000_read_eeprom(&adapter
->hw
,
930 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
931 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
934 case e1000_82546_rev_3
:
936 case e1000_80003es2lan
:
937 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
938 e1000_read_eeprom(&adapter
->hw
,
939 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
944 e1000_read_eeprom(&adapter
->hw
,
945 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
948 if (eeprom_data
& eeprom_apme_mask
)
949 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
951 /* now that we have the eeprom settings, apply the special cases
952 * where the eeprom may be wrong or the board simply won't support
953 * wake on lan on a particular port */
954 switch (pdev
->device
) {
955 case E1000_DEV_ID_82546GB_PCIE
:
956 adapter
->eeprom_wol
= 0;
958 case E1000_DEV_ID_82546EB_FIBER
:
959 case E1000_DEV_ID_82546GB_FIBER
:
960 case E1000_DEV_ID_82571EB_FIBER
:
961 /* Wake events only supported on port A for dual fiber
962 * regardless of eeprom setting */
963 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
964 adapter
->eeprom_wol
= 0;
966 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
967 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
968 /* if quad port adapter, disable WoL on all but port A */
969 if (global_quad_port_a
!= 0)
970 adapter
->eeprom_wol
= 0;
972 adapter
->quad_port_a
= 1;
973 /* Reset for multiple quad port adapters */
974 if (++global_quad_port_a
== 4)
975 global_quad_port_a
= 0;
979 /* initialize the wol settings based on the eeprom settings */
980 adapter
->wol
= adapter
->eeprom_wol
;
982 /* print bus type/speed/width info */
984 struct e1000_hw
*hw
= &adapter
->hw
;
985 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
986 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
987 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
988 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
989 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
990 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
991 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
992 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
993 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
994 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
995 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
999 for (i
= 0; i
< 6; i
++)
1000 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1002 /* reset the hardware with the new settings */
1003 e1000_reset(adapter
);
1005 /* If the controller is 82573 and f/w is AMT, do not set
1006 * DRV_LOAD until the interface is up. For all other cases,
1007 * let the f/w know that the h/w is now under the control
1009 if (adapter
->hw
.mac_type
!= e1000_82573
||
1010 !e1000_check_mng_mode(&adapter
->hw
))
1011 e1000_get_hw_control(adapter
);
1013 strcpy(netdev
->name
, "eth%d");
1014 if ((err
= register_netdev(netdev
)))
1017 /* tell the stack to leave us alone until e1000_open() is called */
1018 netif_carrier_off(netdev
);
1019 netif_stop_queue(netdev
);
1021 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1027 e1000_release_hw_control(adapter
);
1029 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1030 e1000_phy_hw_reset(&adapter
->hw
);
1032 if (adapter
->hw
.flash_address
)
1033 iounmap(adapter
->hw
.flash_address
);
1035 #ifdef CONFIG_E1000_NAPI
1036 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1037 dev_put(&adapter
->polling_netdev
[i
]);
1040 kfree(adapter
->tx_ring
);
1041 kfree(adapter
->rx_ring
);
1042 #ifdef CONFIG_E1000_NAPI
1043 kfree(adapter
->polling_netdev
);
1046 iounmap(adapter
->hw
.hw_addr
);
1048 free_netdev(netdev
);
1050 pci_release_regions(pdev
);
1053 pci_disable_device(pdev
);
1058 * e1000_remove - Device Removal Routine
1059 * @pdev: PCI device information struct
1061 * e1000_remove is called by the PCI subsystem to alert the driver
1062 * that it should release a PCI device. The could be caused by a
1063 * Hot-Plug event, or because the driver is going to be removed from
1067 static void __devexit
1068 e1000_remove(struct pci_dev
*pdev
)
1070 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1071 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1073 #ifdef CONFIG_E1000_NAPI
1077 flush_scheduled_work();
1079 if (adapter
->hw
.mac_type
< e1000_82571
&&
1080 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1081 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1082 if (manc
& E1000_MANC_SMBUS_EN
) {
1083 manc
|= E1000_MANC_ARP_EN
;
1084 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1088 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1089 * would have already happened in close and is redundant. */
1090 e1000_release_hw_control(adapter
);
1092 unregister_netdev(netdev
);
1093 #ifdef CONFIG_E1000_NAPI
1094 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1095 dev_put(&adapter
->polling_netdev
[i
]);
1098 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1099 e1000_phy_hw_reset(&adapter
->hw
);
1101 kfree(adapter
->tx_ring
);
1102 kfree(adapter
->rx_ring
);
1103 #ifdef CONFIG_E1000_NAPI
1104 kfree(adapter
->polling_netdev
);
1107 iounmap(adapter
->hw
.hw_addr
);
1108 if (adapter
->hw
.flash_address
)
1109 iounmap(adapter
->hw
.flash_address
);
1110 pci_release_regions(pdev
);
1112 free_netdev(netdev
);
1114 pci_disable_device(pdev
);
1118 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1119 * @adapter: board private structure to initialize
1121 * e1000_sw_init initializes the Adapter private data structure.
1122 * Fields are initialized based on PCI device information and
1123 * OS network device settings (MTU size).
1126 static int __devinit
1127 e1000_sw_init(struct e1000_adapter
*adapter
)
1129 struct e1000_hw
*hw
= &adapter
->hw
;
1130 struct net_device
*netdev
= adapter
->netdev
;
1131 struct pci_dev
*pdev
= adapter
->pdev
;
1132 #ifdef CONFIG_E1000_NAPI
1136 /* PCI config space info */
1138 hw
->vendor_id
= pdev
->vendor
;
1139 hw
->device_id
= pdev
->device
;
1140 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1141 hw
->subsystem_id
= pdev
->subsystem_device
;
1143 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1145 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1147 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1148 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1149 hw
->max_frame_size
= netdev
->mtu
+
1150 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1151 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1153 /* identify the MAC */
1155 if (e1000_set_mac_type(hw
)) {
1156 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1160 switch (hw
->mac_type
) {
1165 case e1000_82541_rev_2
:
1166 case e1000_82547_rev_2
:
1167 hw
->phy_init_script
= 1;
1171 e1000_set_media_type(hw
);
1173 hw
->wait_autoneg_complete
= FALSE
;
1174 hw
->tbi_compatibility_en
= TRUE
;
1175 hw
->adaptive_ifs
= TRUE
;
1177 /* Copper options */
1179 if (hw
->media_type
== e1000_media_type_copper
) {
1180 hw
->mdix
= AUTO_ALL_MODES
;
1181 hw
->disable_polarity_correction
= FALSE
;
1182 hw
->master_slave
= E1000_MASTER_SLAVE
;
1185 adapter
->num_tx_queues
= 1;
1186 adapter
->num_rx_queues
= 1;
1188 if (e1000_alloc_queues(adapter
)) {
1189 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1193 #ifdef CONFIG_E1000_NAPI
1194 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1195 adapter
->polling_netdev
[i
].priv
= adapter
;
1196 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1197 adapter
->polling_netdev
[i
].weight
= 64;
1198 dev_hold(&adapter
->polling_netdev
[i
]);
1199 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1201 spin_lock_init(&adapter
->tx_queue_lock
);
1204 atomic_set(&adapter
->irq_sem
, 1);
1205 spin_lock_init(&adapter
->stats_lock
);
1207 set_bit(__E1000_DOWN
, &adapter
->flags
);
1213 * e1000_alloc_queues - Allocate memory for all rings
1214 * @adapter: board private structure to initialize
1216 * We allocate one ring per queue at run-time since we don't know the
1217 * number of queues at compile-time. The polling_netdev array is
1218 * intended for Multiqueue, but should work fine with a single queue.
1221 static int __devinit
1222 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1226 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1227 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1228 if (!adapter
->tx_ring
)
1230 memset(adapter
->tx_ring
, 0, size
);
1232 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1233 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1234 if (!adapter
->rx_ring
) {
1235 kfree(adapter
->tx_ring
);
1238 memset(adapter
->rx_ring
, 0, size
);
1240 #ifdef CONFIG_E1000_NAPI
1241 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1242 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1243 if (!adapter
->polling_netdev
) {
1244 kfree(adapter
->tx_ring
);
1245 kfree(adapter
->rx_ring
);
1248 memset(adapter
->polling_netdev
, 0, size
);
1251 return E1000_SUCCESS
;
1255 * e1000_open - Called when a network interface is made active
1256 * @netdev: network interface device structure
1258 * Returns 0 on success, negative value on failure
1260 * The open entry point is called when a network interface is made
1261 * active by the system (IFF_UP). At this point all resources needed
1262 * for transmit and receive operations are allocated, the interrupt
1263 * handler is registered with the OS, the watchdog timer is started,
1264 * and the stack is notified that the interface is ready.
1268 e1000_open(struct net_device
*netdev
)
1270 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1273 /* disallow open during test */
1274 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1277 /* allocate transmit descriptors */
1279 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1282 /* allocate receive descriptors */
1284 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1287 err
= e1000_request_irq(adapter
);
1291 e1000_power_up_phy(adapter
);
1293 if ((err
= e1000_up(adapter
)))
1295 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1296 if ((adapter
->hw
.mng_cookie
.status
&
1297 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1298 e1000_update_mng_vlan(adapter
);
1301 /* If AMT is enabled, let the firmware know that the network
1302 * interface is now open */
1303 if (adapter
->hw
.mac_type
== e1000_82573
&&
1304 e1000_check_mng_mode(&adapter
->hw
))
1305 e1000_get_hw_control(adapter
);
1307 return E1000_SUCCESS
;
1310 e1000_power_down_phy(adapter
);
1311 e1000_free_irq(adapter
);
1313 e1000_free_all_rx_resources(adapter
);
1315 e1000_free_all_tx_resources(adapter
);
1317 e1000_reset(adapter
);
1323 * e1000_close - Disables a network interface
1324 * @netdev: network interface device structure
1326 * Returns 0, this is not allowed to fail
1328 * The close entry point is called when an interface is de-activated
1329 * by the OS. The hardware is still under the drivers control, but
1330 * needs to be disabled. A global MAC reset is issued to stop the
1331 * hardware, and all transmit and receive resources are freed.
1335 e1000_close(struct net_device
*netdev
)
1337 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1339 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1340 e1000_down(adapter
);
1341 e1000_power_down_phy(adapter
);
1342 e1000_free_irq(adapter
);
1344 e1000_free_all_tx_resources(adapter
);
1345 e1000_free_all_rx_resources(adapter
);
1347 /* kill manageability vlan ID if supported, but not if a vlan with
1348 * the same ID is registered on the host OS (let 8021q kill it) */
1349 if ((adapter
->hw
.mng_cookie
.status
&
1350 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1352 adapter
->vlgrp
->vlan_devices
[adapter
->mng_vlan_id
])) {
1353 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1356 /* If AMT is enabled, let the firmware know that the network
1357 * interface is now closed */
1358 if (adapter
->hw
.mac_type
== e1000_82573
&&
1359 e1000_check_mng_mode(&adapter
->hw
))
1360 e1000_release_hw_control(adapter
);
1366 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1367 * @adapter: address of board private structure
1368 * @start: address of beginning of memory
1369 * @len: length of memory
1372 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1373 void *start
, unsigned long len
)
1375 unsigned long begin
= (unsigned long) start
;
1376 unsigned long end
= begin
+ len
;
1378 /* First rev 82545 and 82546 need to not allow any memory
1379 * write location to cross 64k boundary due to errata 23 */
1380 if (adapter
->hw
.mac_type
== e1000_82545
||
1381 adapter
->hw
.mac_type
== e1000_82546
) {
1382 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1389 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1390 * @adapter: board private structure
1391 * @txdr: tx descriptor ring (for a specific queue) to setup
1393 * Return 0 on success, negative on failure
1397 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1398 struct e1000_tx_ring
*txdr
)
1400 struct pci_dev
*pdev
= adapter
->pdev
;
1403 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1404 txdr
->buffer_info
= vmalloc(size
);
1405 if (!txdr
->buffer_info
) {
1407 "Unable to allocate memory for the transmit descriptor ring\n");
1410 memset(txdr
->buffer_info
, 0, size
);
1412 /* round up to nearest 4K */
1414 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1415 E1000_ROUNDUP(txdr
->size
, 4096);
1417 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1420 vfree(txdr
->buffer_info
);
1422 "Unable to allocate memory for the transmit descriptor ring\n");
1426 /* Fix for errata 23, can't cross 64kB boundary */
1427 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1428 void *olddesc
= txdr
->desc
;
1429 dma_addr_t olddma
= txdr
->dma
;
1430 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1431 "at %p\n", txdr
->size
, txdr
->desc
);
1432 /* Try again, without freeing the previous */
1433 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1434 /* Failed allocation, critical failure */
1436 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1437 goto setup_tx_desc_die
;
1440 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1442 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1444 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1446 "Unable to allocate aligned memory "
1447 "for the transmit descriptor ring\n");
1448 vfree(txdr
->buffer_info
);
1451 /* Free old allocation, new allocation was successful */
1452 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1455 memset(txdr
->desc
, 0, txdr
->size
);
1457 txdr
->next_to_use
= 0;
1458 txdr
->next_to_clean
= 0;
1459 spin_lock_init(&txdr
->tx_lock
);
1465 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1466 * (Descriptors) for all queues
1467 * @adapter: board private structure
1469 * Return 0 on success, negative on failure
1473 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1477 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1478 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1481 "Allocation for Tx Queue %u failed\n", i
);
1482 for (i
-- ; i
>= 0; i
--)
1483 e1000_free_tx_resources(adapter
,
1484 &adapter
->tx_ring
[i
]);
1493 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1494 * @adapter: board private structure
1496 * Configure the Tx unit of the MAC after a reset.
1500 e1000_configure_tx(struct e1000_adapter
*adapter
)
1503 struct e1000_hw
*hw
= &adapter
->hw
;
1504 uint32_t tdlen
, tctl
, tipg
, tarc
;
1505 uint32_t ipgr1
, ipgr2
;
1507 /* Setup the HW Tx Head and Tail descriptor pointers */
1509 switch (adapter
->num_tx_queues
) {
1512 tdba
= adapter
->tx_ring
[0].dma
;
1513 tdlen
= adapter
->tx_ring
[0].count
*
1514 sizeof(struct e1000_tx_desc
);
1515 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1516 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1517 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1518 E1000_WRITE_REG(hw
, TDT
, 0);
1519 E1000_WRITE_REG(hw
, TDH
, 0);
1520 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1521 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1525 /* Set the default values for the Tx Inter Packet Gap timer */
1527 if (hw
->media_type
== e1000_media_type_fiber
||
1528 hw
->media_type
== e1000_media_type_internal_serdes
)
1529 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1531 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1533 switch (hw
->mac_type
) {
1534 case e1000_82542_rev2_0
:
1535 case e1000_82542_rev2_1
:
1536 tipg
= DEFAULT_82542_TIPG_IPGT
;
1537 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1538 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1540 case e1000_80003es2lan
:
1541 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1542 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1545 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1546 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1549 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1550 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1551 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1553 /* Set the Tx Interrupt Delay register */
1555 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1556 if (hw
->mac_type
>= e1000_82540
)
1557 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1559 /* Program the Transmit Control Register */
1561 tctl
= E1000_READ_REG(hw
, TCTL
);
1562 tctl
&= ~E1000_TCTL_CT
;
1563 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1564 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1566 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1567 tarc
= E1000_READ_REG(hw
, TARC0
);
1569 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1570 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1571 tarc
= E1000_READ_REG(hw
, TARC0
);
1573 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1574 tarc
= E1000_READ_REG(hw
, TARC1
);
1576 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1579 e1000_config_collision_dist(hw
);
1581 /* Setup Transmit Descriptor Settings for eop descriptor */
1582 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1585 if (hw
->mac_type
< e1000_82543
)
1586 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1588 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1590 /* Cache if we're 82544 running in PCI-X because we'll
1591 * need this to apply a workaround later in the send path. */
1592 if (hw
->mac_type
== e1000_82544
&&
1593 hw
->bus_type
== e1000_bus_type_pcix
)
1594 adapter
->pcix_82544
= 1;
1596 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1601 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1602 * @adapter: board private structure
1603 * @rxdr: rx descriptor ring (for a specific queue) to setup
1605 * Returns 0 on success, negative on failure
1609 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1610 struct e1000_rx_ring
*rxdr
)
1612 struct pci_dev
*pdev
= adapter
->pdev
;
1615 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1616 rxdr
->buffer_info
= vmalloc(size
);
1617 if (!rxdr
->buffer_info
) {
1619 "Unable to allocate memory for the receive descriptor ring\n");
1622 memset(rxdr
->buffer_info
, 0, size
);
1624 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1625 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1626 if (!rxdr
->ps_page
) {
1627 vfree(rxdr
->buffer_info
);
1629 "Unable to allocate memory for the receive descriptor ring\n");
1632 memset(rxdr
->ps_page
, 0, size
);
1634 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1635 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1636 if (!rxdr
->ps_page_dma
) {
1637 vfree(rxdr
->buffer_info
);
1638 kfree(rxdr
->ps_page
);
1640 "Unable to allocate memory for the receive descriptor ring\n");
1643 memset(rxdr
->ps_page_dma
, 0, size
);
1645 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1646 desc_len
= sizeof(struct e1000_rx_desc
);
1648 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1650 /* Round up to nearest 4K */
1652 rxdr
->size
= rxdr
->count
* desc_len
;
1653 E1000_ROUNDUP(rxdr
->size
, 4096);
1655 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1659 "Unable to allocate memory for the receive descriptor ring\n");
1661 vfree(rxdr
->buffer_info
);
1662 kfree(rxdr
->ps_page
);
1663 kfree(rxdr
->ps_page_dma
);
1667 /* Fix for errata 23, can't cross 64kB boundary */
1668 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1669 void *olddesc
= rxdr
->desc
;
1670 dma_addr_t olddma
= rxdr
->dma
;
1671 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1672 "at %p\n", rxdr
->size
, rxdr
->desc
);
1673 /* Try again, without freeing the previous */
1674 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1675 /* Failed allocation, critical failure */
1677 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1679 "Unable to allocate memory "
1680 "for the receive descriptor ring\n");
1681 goto setup_rx_desc_die
;
1684 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1686 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1688 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1690 "Unable to allocate aligned memory "
1691 "for the receive descriptor ring\n");
1692 goto setup_rx_desc_die
;
1694 /* Free old allocation, new allocation was successful */
1695 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1698 memset(rxdr
->desc
, 0, rxdr
->size
);
1700 rxdr
->next_to_clean
= 0;
1701 rxdr
->next_to_use
= 0;
1707 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1708 * (Descriptors) for all queues
1709 * @adapter: board private structure
1711 * Return 0 on success, negative on failure
1715 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1719 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1720 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1723 "Allocation for Rx Queue %u failed\n", i
);
1724 for (i
-- ; i
>= 0; i
--)
1725 e1000_free_rx_resources(adapter
,
1726 &adapter
->rx_ring
[i
]);
1735 * e1000_setup_rctl - configure the receive control registers
1736 * @adapter: Board private structure
1738 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1739 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1741 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1743 uint32_t rctl
, rfctl
;
1744 uint32_t psrctl
= 0;
1745 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1749 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1751 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1753 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1754 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1755 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1757 if (adapter
->hw
.tbi_compatibility_on
== 1)
1758 rctl
|= E1000_RCTL_SBP
;
1760 rctl
&= ~E1000_RCTL_SBP
;
1762 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1763 rctl
&= ~E1000_RCTL_LPE
;
1765 rctl
|= E1000_RCTL_LPE
;
1767 /* Setup buffer sizes */
1768 rctl
&= ~E1000_RCTL_SZ_4096
;
1769 rctl
|= E1000_RCTL_BSEX
;
1770 switch (adapter
->rx_buffer_len
) {
1771 case E1000_RXBUFFER_256
:
1772 rctl
|= E1000_RCTL_SZ_256
;
1773 rctl
&= ~E1000_RCTL_BSEX
;
1775 case E1000_RXBUFFER_512
:
1776 rctl
|= E1000_RCTL_SZ_512
;
1777 rctl
&= ~E1000_RCTL_BSEX
;
1779 case E1000_RXBUFFER_1024
:
1780 rctl
|= E1000_RCTL_SZ_1024
;
1781 rctl
&= ~E1000_RCTL_BSEX
;
1783 case E1000_RXBUFFER_2048
:
1785 rctl
|= E1000_RCTL_SZ_2048
;
1786 rctl
&= ~E1000_RCTL_BSEX
;
1788 case E1000_RXBUFFER_4096
:
1789 rctl
|= E1000_RCTL_SZ_4096
;
1791 case E1000_RXBUFFER_8192
:
1792 rctl
|= E1000_RCTL_SZ_8192
;
1794 case E1000_RXBUFFER_16384
:
1795 rctl
|= E1000_RCTL_SZ_16384
;
1799 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1800 /* 82571 and greater support packet-split where the protocol
1801 * header is placed in skb->data and the packet data is
1802 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1803 * In the case of a non-split, skb->data is linearly filled,
1804 * followed by the page buffers. Therefore, skb->data is
1805 * sized to hold the largest protocol header.
1807 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1808 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1810 adapter
->rx_ps_pages
= pages
;
1812 adapter
->rx_ps_pages
= 0;
1814 if (adapter
->rx_ps_pages
) {
1815 /* Configure extra packet-split registers */
1816 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1817 rfctl
|= E1000_RFCTL_EXTEN
;
1818 /* disable IPv6 packet split support */
1819 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1820 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1822 rctl
|= E1000_RCTL_DTYP_PS
;
1824 psrctl
|= adapter
->rx_ps_bsize0
>>
1825 E1000_PSRCTL_BSIZE0_SHIFT
;
1827 switch (adapter
->rx_ps_pages
) {
1829 psrctl
|= PAGE_SIZE
<<
1830 E1000_PSRCTL_BSIZE3_SHIFT
;
1832 psrctl
|= PAGE_SIZE
<<
1833 E1000_PSRCTL_BSIZE2_SHIFT
;
1835 psrctl
|= PAGE_SIZE
>>
1836 E1000_PSRCTL_BSIZE1_SHIFT
;
1840 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1843 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1847 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1848 * @adapter: board private structure
1850 * Configure the Rx unit of the MAC after a reset.
1854 e1000_configure_rx(struct e1000_adapter
*adapter
)
1857 struct e1000_hw
*hw
= &adapter
->hw
;
1858 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1860 if (adapter
->rx_ps_pages
) {
1861 /* this is a 32 byte descriptor */
1862 rdlen
= adapter
->rx_ring
[0].count
*
1863 sizeof(union e1000_rx_desc_packet_split
);
1864 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1865 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1867 rdlen
= adapter
->rx_ring
[0].count
*
1868 sizeof(struct e1000_rx_desc
);
1869 adapter
->clean_rx
= e1000_clean_rx_irq
;
1870 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1873 /* disable receives while setting up the descriptors */
1874 rctl
= E1000_READ_REG(hw
, RCTL
);
1875 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1877 /* set the Receive Delay Timer Register */
1878 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1880 if (hw
->mac_type
>= e1000_82540
) {
1881 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1882 if (adapter
->itr
> 1)
1883 E1000_WRITE_REG(hw
, ITR
,
1884 1000000000 / (adapter
->itr
* 256));
1887 if (hw
->mac_type
>= e1000_82571
) {
1888 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1889 /* Reset delay timers after every interrupt */
1890 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1891 #ifdef CONFIG_E1000_NAPI
1892 /* Auto-Mask interrupts upon ICR read. */
1893 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1895 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1896 E1000_WRITE_REG(hw
, IAM
, ~0);
1897 E1000_WRITE_FLUSH(hw
);
1900 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1901 * the Base and Length of the Rx Descriptor Ring */
1902 switch (adapter
->num_rx_queues
) {
1905 rdba
= adapter
->rx_ring
[0].dma
;
1906 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1907 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1908 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1909 E1000_WRITE_REG(hw
, RDT
, 0);
1910 E1000_WRITE_REG(hw
, RDH
, 0);
1911 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1912 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1916 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1917 if (hw
->mac_type
>= e1000_82543
) {
1918 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1919 if (adapter
->rx_csum
== TRUE
) {
1920 rxcsum
|= E1000_RXCSUM_TUOFL
;
1922 /* Enable 82571 IPv4 payload checksum for UDP fragments
1923 * Must be used in conjunction with packet-split. */
1924 if ((hw
->mac_type
>= e1000_82571
) &&
1925 (adapter
->rx_ps_pages
)) {
1926 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1929 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1930 /* don't need to clear IPPCSE as it defaults to 0 */
1932 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1935 /* Enable Receives */
1936 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1940 * e1000_free_tx_resources - Free Tx Resources per Queue
1941 * @adapter: board private structure
1942 * @tx_ring: Tx descriptor ring for a specific queue
1944 * Free all transmit software resources
1948 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1949 struct e1000_tx_ring
*tx_ring
)
1951 struct pci_dev
*pdev
= adapter
->pdev
;
1953 e1000_clean_tx_ring(adapter
, tx_ring
);
1955 vfree(tx_ring
->buffer_info
);
1956 tx_ring
->buffer_info
= NULL
;
1958 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1960 tx_ring
->desc
= NULL
;
1964 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1965 * @adapter: board private structure
1967 * Free all transmit software resources
1971 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1975 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1976 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1980 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1981 struct e1000_buffer
*buffer_info
)
1983 if (buffer_info
->dma
) {
1984 pci_unmap_page(adapter
->pdev
,
1986 buffer_info
->length
,
1989 if (buffer_info
->skb
)
1990 dev_kfree_skb_any(buffer_info
->skb
);
1991 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1995 * e1000_clean_tx_ring - Free Tx Buffers
1996 * @adapter: board private structure
1997 * @tx_ring: ring to be cleaned
2001 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2002 struct e1000_tx_ring
*tx_ring
)
2004 struct e1000_buffer
*buffer_info
;
2008 /* Free all the Tx ring sk_buffs */
2010 for (i
= 0; i
< tx_ring
->count
; i
++) {
2011 buffer_info
= &tx_ring
->buffer_info
[i
];
2012 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2015 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2016 memset(tx_ring
->buffer_info
, 0, size
);
2018 /* Zero out the descriptor ring */
2020 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2022 tx_ring
->next_to_use
= 0;
2023 tx_ring
->next_to_clean
= 0;
2024 tx_ring
->last_tx_tso
= 0;
2026 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2027 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2031 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2032 * @adapter: board private structure
2036 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2040 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2041 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2045 * e1000_free_rx_resources - Free Rx Resources
2046 * @adapter: board private structure
2047 * @rx_ring: ring to clean the resources from
2049 * Free all receive software resources
2053 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2054 struct e1000_rx_ring
*rx_ring
)
2056 struct pci_dev
*pdev
= adapter
->pdev
;
2058 e1000_clean_rx_ring(adapter
, rx_ring
);
2060 vfree(rx_ring
->buffer_info
);
2061 rx_ring
->buffer_info
= NULL
;
2062 kfree(rx_ring
->ps_page
);
2063 rx_ring
->ps_page
= NULL
;
2064 kfree(rx_ring
->ps_page_dma
);
2065 rx_ring
->ps_page_dma
= NULL
;
2067 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2069 rx_ring
->desc
= NULL
;
2073 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2074 * @adapter: board private structure
2076 * Free all receive software resources
2080 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2084 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2085 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2089 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2090 * @adapter: board private structure
2091 * @rx_ring: ring to free buffers from
2095 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2096 struct e1000_rx_ring
*rx_ring
)
2098 struct e1000_buffer
*buffer_info
;
2099 struct e1000_ps_page
*ps_page
;
2100 struct e1000_ps_page_dma
*ps_page_dma
;
2101 struct pci_dev
*pdev
= adapter
->pdev
;
2105 /* Free all the Rx ring sk_buffs */
2106 for (i
= 0; i
< rx_ring
->count
; i
++) {
2107 buffer_info
= &rx_ring
->buffer_info
[i
];
2108 if (buffer_info
->skb
) {
2109 pci_unmap_single(pdev
,
2111 buffer_info
->length
,
2112 PCI_DMA_FROMDEVICE
);
2114 dev_kfree_skb(buffer_info
->skb
);
2115 buffer_info
->skb
= NULL
;
2117 ps_page
= &rx_ring
->ps_page
[i
];
2118 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2119 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2120 if (!ps_page
->ps_page
[j
]) break;
2121 pci_unmap_page(pdev
,
2122 ps_page_dma
->ps_page_dma
[j
],
2123 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2124 ps_page_dma
->ps_page_dma
[j
] = 0;
2125 put_page(ps_page
->ps_page
[j
]);
2126 ps_page
->ps_page
[j
] = NULL
;
2130 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2131 memset(rx_ring
->buffer_info
, 0, size
);
2132 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2133 memset(rx_ring
->ps_page
, 0, size
);
2134 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2135 memset(rx_ring
->ps_page_dma
, 0, size
);
2137 /* Zero out the descriptor ring */
2139 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2141 rx_ring
->next_to_clean
= 0;
2142 rx_ring
->next_to_use
= 0;
2144 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2145 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2149 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2150 * @adapter: board private structure
2154 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2158 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2159 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2162 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2163 * and memory write and invalidate disabled for certain operations
2166 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2168 struct net_device
*netdev
= adapter
->netdev
;
2171 e1000_pci_clear_mwi(&adapter
->hw
);
2173 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2174 rctl
|= E1000_RCTL_RST
;
2175 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2176 E1000_WRITE_FLUSH(&adapter
->hw
);
2179 if (netif_running(netdev
))
2180 e1000_clean_all_rx_rings(adapter
);
2184 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2186 struct net_device
*netdev
= adapter
->netdev
;
2189 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2190 rctl
&= ~E1000_RCTL_RST
;
2191 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2192 E1000_WRITE_FLUSH(&adapter
->hw
);
2195 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2196 e1000_pci_set_mwi(&adapter
->hw
);
2198 if (netif_running(netdev
)) {
2199 /* No need to loop, because 82542 supports only 1 queue */
2200 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2201 e1000_configure_rx(adapter
);
2202 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2207 * e1000_set_mac - Change the Ethernet Address of the NIC
2208 * @netdev: network interface device structure
2209 * @p: pointer to an address structure
2211 * Returns 0 on success, negative on failure
2215 e1000_set_mac(struct net_device
*netdev
, void *p
)
2217 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2218 struct sockaddr
*addr
= p
;
2220 if (!is_valid_ether_addr(addr
->sa_data
))
2221 return -EADDRNOTAVAIL
;
2223 /* 82542 2.0 needs to be in reset to write receive address registers */
2225 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2226 e1000_enter_82542_rst(adapter
);
2228 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2229 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2231 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2233 /* With 82571 controllers, LAA may be overwritten (with the default)
2234 * due to controller reset from the other port. */
2235 if (adapter
->hw
.mac_type
== e1000_82571
) {
2236 /* activate the work around */
2237 adapter
->hw
.laa_is_present
= 1;
2239 /* Hold a copy of the LAA in RAR[14] This is done so that
2240 * between the time RAR[0] gets clobbered and the time it
2241 * gets fixed (in e1000_watchdog), the actual LAA is in one
2242 * of the RARs and no incoming packets directed to this port
2243 * are dropped. Eventaully the LAA will be in RAR[0] and
2245 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2246 E1000_RAR_ENTRIES
- 1);
2249 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2250 e1000_leave_82542_rst(adapter
);
2256 * e1000_set_multi - Multicast and Promiscuous mode set
2257 * @netdev: network interface device structure
2259 * The set_multi entry point is called whenever the multicast address
2260 * list or the network interface flags are updated. This routine is
2261 * responsible for configuring the hardware for proper multicast,
2262 * promiscuous mode, and all-multi behavior.
2266 e1000_set_multi(struct net_device
*netdev
)
2268 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2269 struct e1000_hw
*hw
= &adapter
->hw
;
2270 struct dev_mc_list
*mc_ptr
;
2272 uint32_t hash_value
;
2273 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2274 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2275 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2276 E1000_NUM_MTA_REGISTERS
;
2278 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2279 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2281 /* reserve RAR[14] for LAA over-write work-around */
2282 if (adapter
->hw
.mac_type
== e1000_82571
)
2285 /* Check for Promiscuous and All Multicast modes */
2287 rctl
= E1000_READ_REG(hw
, RCTL
);
2289 if (netdev
->flags
& IFF_PROMISC
) {
2290 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2291 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2292 rctl
|= E1000_RCTL_MPE
;
2293 rctl
&= ~E1000_RCTL_UPE
;
2295 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2298 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2300 /* 82542 2.0 needs to be in reset to write receive address registers */
2302 if (hw
->mac_type
== e1000_82542_rev2_0
)
2303 e1000_enter_82542_rst(adapter
);
2305 /* load the first 14 multicast address into the exact filters 1-14
2306 * RAR 0 is used for the station MAC adddress
2307 * if there are not 14 addresses, go ahead and clear the filters
2308 * -- with 82571 controllers only 0-13 entries are filled here
2310 mc_ptr
= netdev
->mc_list
;
2312 for (i
= 1; i
< rar_entries
; i
++) {
2314 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2315 mc_ptr
= mc_ptr
->next
;
2317 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2318 E1000_WRITE_FLUSH(hw
);
2319 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2320 E1000_WRITE_FLUSH(hw
);
2324 /* clear the old settings from the multicast hash table */
2326 for (i
= 0; i
< mta_reg_count
; i
++) {
2327 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2328 E1000_WRITE_FLUSH(hw
);
2331 /* load any remaining addresses into the hash table */
2333 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2334 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2335 e1000_mta_set(hw
, hash_value
);
2338 if (hw
->mac_type
== e1000_82542_rev2_0
)
2339 e1000_leave_82542_rst(adapter
);
2342 /* Need to wait a few seconds after link up to get diagnostic information from
2346 e1000_update_phy_info(unsigned long data
)
2348 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2349 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2353 * e1000_82547_tx_fifo_stall - Timer Call-back
2354 * @data: pointer to adapter cast into an unsigned long
2358 e1000_82547_tx_fifo_stall(unsigned long data
)
2360 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2361 struct net_device
*netdev
= adapter
->netdev
;
2364 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2365 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2366 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2367 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2368 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2369 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2370 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2371 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2372 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2373 tctl
& ~E1000_TCTL_EN
);
2374 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2375 adapter
->tx_head_addr
);
2376 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2377 adapter
->tx_head_addr
);
2378 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2379 adapter
->tx_head_addr
);
2380 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2381 adapter
->tx_head_addr
);
2382 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2383 E1000_WRITE_FLUSH(&adapter
->hw
);
2385 adapter
->tx_fifo_head
= 0;
2386 atomic_set(&adapter
->tx_fifo_stall
, 0);
2387 netif_wake_queue(netdev
);
2389 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2395 * e1000_watchdog - Timer Call-back
2396 * @data: pointer to adapter cast into an unsigned long
2399 e1000_watchdog(unsigned long data
)
2401 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2402 struct net_device
*netdev
= adapter
->netdev
;
2403 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2404 uint32_t link
, tctl
;
2407 ret_val
= e1000_check_for_link(&adapter
->hw
);
2408 if ((ret_val
== E1000_ERR_PHY
) &&
2409 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2410 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2411 /* See e1000_kumeran_lock_loss_workaround() */
2413 "Gigabit has been disabled, downgrading speed\n");
2415 if (adapter
->hw
.mac_type
== e1000_82573
) {
2416 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2417 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2418 e1000_update_mng_vlan(adapter
);
2421 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2422 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2423 link
= !adapter
->hw
.serdes_link_down
;
2425 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2428 if (!netif_carrier_ok(netdev
)) {
2429 boolean_t txb2b
= 1;
2430 e1000_get_speed_and_duplex(&adapter
->hw
,
2431 &adapter
->link_speed
,
2432 &adapter
->link_duplex
);
2434 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2435 adapter
->link_speed
,
2436 adapter
->link_duplex
== FULL_DUPLEX
?
2437 "Full Duplex" : "Half Duplex");
2439 /* tweak tx_queue_len according to speed/duplex
2440 * and adjust the timeout factor */
2441 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2442 adapter
->tx_timeout_factor
= 1;
2443 switch (adapter
->link_speed
) {
2446 netdev
->tx_queue_len
= 10;
2447 adapter
->tx_timeout_factor
= 8;
2451 netdev
->tx_queue_len
= 100;
2452 /* maybe add some timeout factor ? */
2456 if ((adapter
->hw
.mac_type
== e1000_82571
||
2457 adapter
->hw
.mac_type
== e1000_82572
) &&
2459 #define SPEED_MODE_BIT (1 << 21)
2461 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2462 tarc0
&= ~SPEED_MODE_BIT
;
2463 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2467 /* disable TSO for pcie and 10/100 speeds, to avoid
2468 * some hardware issues */
2469 if (!adapter
->tso_force
&&
2470 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2471 switch (adapter
->link_speed
) {
2475 "10/100 speed: disabling TSO\n");
2476 netdev
->features
&= ~NETIF_F_TSO
;
2479 netdev
->features
|= NETIF_F_TSO
;
2488 /* enable transmits in the hardware, need to do this
2489 * after setting TARC0 */
2490 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2491 tctl
|= E1000_TCTL_EN
;
2492 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2494 netif_carrier_on(netdev
);
2495 netif_wake_queue(netdev
);
2496 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2497 adapter
->smartspeed
= 0;
2500 if (netif_carrier_ok(netdev
)) {
2501 adapter
->link_speed
= 0;
2502 adapter
->link_duplex
= 0;
2503 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2504 netif_carrier_off(netdev
);
2505 netif_stop_queue(netdev
);
2506 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2508 /* 80003ES2LAN workaround--
2509 * For packet buffer work-around on link down event;
2510 * disable receives in the ISR and
2511 * reset device here in the watchdog
2513 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2515 schedule_work(&adapter
->reset_task
);
2518 e1000_smartspeed(adapter
);
2521 e1000_update_stats(adapter
);
2523 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2524 adapter
->tpt_old
= adapter
->stats
.tpt
;
2525 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2526 adapter
->colc_old
= adapter
->stats
.colc
;
2528 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2529 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2530 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2531 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2533 e1000_update_adaptive(&adapter
->hw
);
2535 if (!netif_carrier_ok(netdev
)) {
2536 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2537 /* We've lost link, so the controller stops DMA,
2538 * but we've got queued Tx work that's never going
2539 * to get done, so reset controller to flush Tx.
2540 * (Do the reset outside of interrupt context). */
2541 adapter
->tx_timeout_count
++;
2542 schedule_work(&adapter
->reset_task
);
2546 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2547 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2548 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2549 * asymmetrical Tx or Rx gets ITR=8000; everyone
2550 * else is between 2000-8000. */
2551 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2552 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2553 adapter
->gotcl
- adapter
->gorcl
:
2554 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2555 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2556 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2559 /* Cause software interrupt to ensure rx ring is cleaned */
2560 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2562 /* Force detection of hung controller every watchdog period */
2563 adapter
->detect_tx_hung
= TRUE
;
2565 /* With 82571 controllers, LAA may be overwritten due to controller
2566 * reset from the other port. Set the appropriate LAA in RAR[0] */
2567 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2568 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2570 /* Reset the timer */
2571 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2574 #define E1000_TX_FLAGS_CSUM 0x00000001
2575 #define E1000_TX_FLAGS_VLAN 0x00000002
2576 #define E1000_TX_FLAGS_TSO 0x00000004
2577 #define E1000_TX_FLAGS_IPV4 0x00000008
2578 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2579 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2582 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2583 struct sk_buff
*skb
)
2586 struct e1000_context_desc
*context_desc
;
2587 struct e1000_buffer
*buffer_info
;
2589 uint32_t cmd_length
= 0;
2590 uint16_t ipcse
= 0, tucse
, mss
;
2591 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2594 if (skb_is_gso(skb
)) {
2595 if (skb_header_cloned(skb
)) {
2596 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2601 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2602 mss
= skb_shinfo(skb
)->gso_size
;
2603 if (skb
->protocol
== htons(ETH_P_IP
)) {
2604 skb
->nh
.iph
->tot_len
= 0;
2605 skb
->nh
.iph
->check
= 0;
2607 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2612 cmd_length
= E1000_TXD_CMD_IP
;
2613 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2614 #ifdef NETIF_F_TSO_IPV6
2615 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2616 skb
->nh
.ipv6h
->payload_len
= 0;
2618 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2619 &skb
->nh
.ipv6h
->daddr
,
2626 ipcss
= skb
->nh
.raw
- skb
->data
;
2627 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2628 tucss
= skb
->h
.raw
- skb
->data
;
2629 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2632 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2633 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2635 i
= tx_ring
->next_to_use
;
2636 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2637 buffer_info
= &tx_ring
->buffer_info
[i
];
2639 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2640 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2641 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2642 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2643 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2644 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2645 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2646 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2647 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2649 buffer_info
->time_stamp
= jiffies
;
2651 if (++i
== tx_ring
->count
) i
= 0;
2652 tx_ring
->next_to_use
= i
;
2662 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2663 struct sk_buff
*skb
)
2665 struct e1000_context_desc
*context_desc
;
2666 struct e1000_buffer
*buffer_info
;
2670 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2671 css
= skb
->h
.raw
- skb
->data
;
2673 i
= tx_ring
->next_to_use
;
2674 buffer_info
= &tx_ring
->buffer_info
[i
];
2675 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2677 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2678 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2679 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2680 context_desc
->tcp_seg_setup
.data
= 0;
2681 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2683 buffer_info
->time_stamp
= jiffies
;
2685 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2686 tx_ring
->next_to_use
= i
;
2694 #define E1000_MAX_TXD_PWR 12
2695 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2698 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2699 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2700 unsigned int nr_frags
, unsigned int mss
)
2702 struct e1000_buffer
*buffer_info
;
2703 unsigned int len
= skb
->len
;
2704 unsigned int offset
= 0, size
, count
= 0, i
;
2706 len
-= skb
->data_len
;
2708 i
= tx_ring
->next_to_use
;
2711 buffer_info
= &tx_ring
->buffer_info
[i
];
2712 size
= min(len
, max_per_txd
);
2714 /* Workaround for Controller erratum --
2715 * descriptor for non-tso packet in a linear SKB that follows a
2716 * tso gets written back prematurely before the data is fully
2717 * DMA'd to the controller */
2718 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2720 tx_ring
->last_tx_tso
= 0;
2724 /* Workaround for premature desc write-backs
2725 * in TSO mode. Append 4-byte sentinel desc */
2726 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2729 /* work-around for errata 10 and it applies
2730 * to all controllers in PCI-X mode
2731 * The fix is to make sure that the first descriptor of a
2732 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2734 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2735 (size
> 2015) && count
== 0))
2738 /* Workaround for potential 82544 hang in PCI-X. Avoid
2739 * terminating buffers within evenly-aligned dwords. */
2740 if (unlikely(adapter
->pcix_82544
&&
2741 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2745 buffer_info
->length
= size
;
2747 pci_map_single(adapter
->pdev
,
2751 buffer_info
->time_stamp
= jiffies
;
2756 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2759 for (f
= 0; f
< nr_frags
; f
++) {
2760 struct skb_frag_struct
*frag
;
2762 frag
= &skb_shinfo(skb
)->frags
[f
];
2764 offset
= frag
->page_offset
;
2767 buffer_info
= &tx_ring
->buffer_info
[i
];
2768 size
= min(len
, max_per_txd
);
2770 /* Workaround for premature desc write-backs
2771 * in TSO mode. Append 4-byte sentinel desc */
2772 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2775 /* Workaround for potential 82544 hang in PCI-X.
2776 * Avoid terminating buffers within evenly-aligned
2778 if (unlikely(adapter
->pcix_82544
&&
2779 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2783 buffer_info
->length
= size
;
2785 pci_map_page(adapter
->pdev
,
2790 buffer_info
->time_stamp
= jiffies
;
2795 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2799 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2800 tx_ring
->buffer_info
[i
].skb
= skb
;
2801 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2807 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2808 int tx_flags
, int count
)
2810 struct e1000_tx_desc
*tx_desc
= NULL
;
2811 struct e1000_buffer
*buffer_info
;
2812 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2815 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2816 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2818 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2820 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2821 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2824 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2825 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2826 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2829 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2830 txd_lower
|= E1000_TXD_CMD_VLE
;
2831 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2834 i
= tx_ring
->next_to_use
;
2837 buffer_info
= &tx_ring
->buffer_info
[i
];
2838 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2839 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2840 tx_desc
->lower
.data
=
2841 cpu_to_le32(txd_lower
| buffer_info
->length
);
2842 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2843 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2846 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2848 /* Force memory writes to complete before letting h/w
2849 * know there are new descriptors to fetch. (Only
2850 * applicable for weak-ordered memory model archs,
2851 * such as IA-64). */
2854 tx_ring
->next_to_use
= i
;
2855 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2859 * 82547 workaround to avoid controller hang in half-duplex environment.
2860 * The workaround is to avoid queuing a large packet that would span
2861 * the internal Tx FIFO ring boundary by notifying the stack to resend
2862 * the packet at a later time. This gives the Tx FIFO an opportunity to
2863 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2864 * to the beginning of the Tx FIFO.
2867 #define E1000_FIFO_HDR 0x10
2868 #define E1000_82547_PAD_LEN 0x3E0
2871 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2873 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2874 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2876 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2878 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2879 goto no_fifo_stall_required
;
2881 if (atomic_read(&adapter
->tx_fifo_stall
))
2884 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2885 atomic_set(&adapter
->tx_fifo_stall
, 1);
2889 no_fifo_stall_required
:
2890 adapter
->tx_fifo_head
+= skb_fifo_len
;
2891 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2892 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2896 #define MINIMUM_DHCP_PACKET_SIZE 282
2898 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2900 struct e1000_hw
*hw
= &adapter
->hw
;
2901 uint16_t length
, offset
;
2902 if (vlan_tx_tag_present(skb
)) {
2903 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2904 ( adapter
->hw
.mng_cookie
.status
&
2905 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2908 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2909 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2910 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2911 const struct iphdr
*ip
=
2912 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2913 if (IPPROTO_UDP
== ip
->protocol
) {
2914 struct udphdr
*udp
=
2915 (struct udphdr
*)((uint8_t *)ip
+
2917 if (ntohs(udp
->dest
) == 67) {
2918 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2919 length
= skb
->len
- offset
;
2921 return e1000_mng_write_dhcp_info(hw
,
2931 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
2933 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2934 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
2936 netif_stop_queue(netdev
);
2937 /* Herbert's original patch had:
2938 * smp_mb__after_netif_stop_queue();
2939 * but since that doesn't exist yet, just open code it. */
2942 /* We need to check again in a case another CPU has just
2943 * made room available. */
2944 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
2948 netif_start_queue(netdev
);
2952 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
2953 struct e1000_tx_ring
*tx_ring
, int size
)
2955 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
2957 return __e1000_maybe_stop_tx(netdev
, size
);
2960 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2962 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2964 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2965 struct e1000_tx_ring
*tx_ring
;
2966 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2967 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2968 unsigned int tx_flags
= 0;
2969 unsigned int len
= skb
->len
;
2970 unsigned long flags
;
2971 unsigned int nr_frags
= 0;
2972 unsigned int mss
= 0;
2976 len
-= skb
->data_len
;
2978 /* This goes back to the question of how to logically map a tx queue
2979 * to a flow. Right now, performance is impacted slightly negatively
2980 * if using multiple tx queues. If the stack breaks away from a
2981 * single qdisc implementation, we can look at this again. */
2982 tx_ring
= adapter
->tx_ring
;
2984 if (unlikely(skb
->len
<= 0)) {
2985 dev_kfree_skb_any(skb
);
2986 return NETDEV_TX_OK
;
2990 mss
= skb_shinfo(skb
)->gso_size
;
2991 /* The controller does a simple calculation to
2992 * make sure there is enough room in the FIFO before
2993 * initiating the DMA for each buffer. The calc is:
2994 * 4 = ceil(buffer len/mss). To make sure we don't
2995 * overrun the FIFO, adjust the max buffer len if mss
2999 max_per_txd
= min(mss
<< 2, max_per_txd
);
3000 max_txd_pwr
= fls(max_per_txd
) - 1;
3002 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3003 * points to just header, pull a few bytes of payload from
3004 * frags into skb->data */
3005 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3006 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3007 switch (adapter
->hw
.mac_type
) {
3008 unsigned int pull_size
;
3013 pull_size
= min((unsigned int)4, skb
->data_len
);
3014 if (!__pskb_pull_tail(skb
, pull_size
)) {
3016 "__pskb_pull_tail failed.\n");
3017 dev_kfree_skb_any(skb
);
3018 return NETDEV_TX_OK
;
3020 len
= skb
->len
- skb
->data_len
;
3029 /* reserve a descriptor for the offload context */
3030 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3034 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3039 /* Controller Erratum workaround */
3040 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3044 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3046 if (adapter
->pcix_82544
)
3049 /* work-around for errata 10 and it applies to all controllers
3050 * in PCI-X mode, so add one more descriptor to the count
3052 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3056 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3057 for (f
= 0; f
< nr_frags
; f
++)
3058 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3060 if (adapter
->pcix_82544
)
3064 if (adapter
->hw
.tx_pkt_filtering
&&
3065 (adapter
->hw
.mac_type
== e1000_82573
))
3066 e1000_transfer_dhcp_info(adapter
, skb
);
3068 local_irq_save(flags
);
3069 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3070 /* Collision - tell upper layer to requeue */
3071 local_irq_restore(flags
);
3072 return NETDEV_TX_LOCKED
;
3075 /* need: count + 2 desc gap to keep tail from touching
3076 * head, otherwise try next time */
3077 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3078 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3079 return NETDEV_TX_BUSY
;
3082 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3083 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3084 netif_stop_queue(netdev
);
3085 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3086 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3087 return NETDEV_TX_BUSY
;
3091 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3092 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3093 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3096 first
= tx_ring
->next_to_use
;
3098 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3100 dev_kfree_skb_any(skb
);
3101 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3102 return NETDEV_TX_OK
;
3106 tx_ring
->last_tx_tso
= 1;
3107 tx_flags
|= E1000_TX_FLAGS_TSO
;
3108 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3109 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3111 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3112 * 82571 hardware supports TSO capabilities for IPv6 as well...
3113 * no longer assume, we must. */
3114 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3115 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3117 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3118 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3119 max_per_txd
, nr_frags
, mss
));
3121 netdev
->trans_start
= jiffies
;
3123 /* Make sure there is space in the ring for the next send. */
3124 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3126 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3127 return NETDEV_TX_OK
;
3131 * e1000_tx_timeout - Respond to a Tx Hang
3132 * @netdev: network interface device structure
3136 e1000_tx_timeout(struct net_device
*netdev
)
3138 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3140 /* Do the reset outside of interrupt context */
3141 adapter
->tx_timeout_count
++;
3142 schedule_work(&adapter
->reset_task
);
3146 e1000_reset_task(struct net_device
*netdev
)
3148 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3150 e1000_reinit_locked(adapter
);
3154 * e1000_get_stats - Get System Network Statistics
3155 * @netdev: network interface device structure
3157 * Returns the address of the device statistics structure.
3158 * The statistics are actually updated from the timer callback.
3161 static struct net_device_stats
*
3162 e1000_get_stats(struct net_device
*netdev
)
3164 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3166 /* only return the current stats */
3167 return &adapter
->net_stats
;
3171 * e1000_change_mtu - Change the Maximum Transfer Unit
3172 * @netdev: network interface device structure
3173 * @new_mtu: new value for maximum frame size
3175 * Returns 0 on success, negative on failure
3179 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3181 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3182 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3183 uint16_t eeprom_data
= 0;
3185 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3186 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3187 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3191 /* Adapter-specific max frame size limits. */
3192 switch (adapter
->hw
.mac_type
) {
3193 case e1000_undefined
... e1000_82542_rev2_1
:
3195 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3196 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3201 /* Jumbo Frames not supported if:
3202 * - this is not an 82573L device
3203 * - ASPM is enabled in any way (0x1A bits 3:2) */
3204 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3206 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3207 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3208 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3210 "Jumbo Frames not supported.\n");
3215 /* ERT will be enabled later to enable wire speed receives */
3217 /* fall through to get support */
3220 case e1000_80003es2lan
:
3221 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3222 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3223 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3228 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3232 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3233 * means we reserve 2 more, this pushes us to allocate from the next
3235 * i.e. RXBUFFER_2048 --> size-4096 slab */
3237 if (max_frame
<= E1000_RXBUFFER_256
)
3238 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3239 else if (max_frame
<= E1000_RXBUFFER_512
)
3240 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3241 else if (max_frame
<= E1000_RXBUFFER_1024
)
3242 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3243 else if (max_frame
<= E1000_RXBUFFER_2048
)
3244 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3245 else if (max_frame
<= E1000_RXBUFFER_4096
)
3246 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3247 else if (max_frame
<= E1000_RXBUFFER_8192
)
3248 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3249 else if (max_frame
<= E1000_RXBUFFER_16384
)
3250 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3252 /* adjust allocation if LPE protects us, and we aren't using SBP */
3253 if (!adapter
->hw
.tbi_compatibility_on
&&
3254 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3255 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3256 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3258 netdev
->mtu
= new_mtu
;
3260 if (netif_running(netdev
))
3261 e1000_reinit_locked(adapter
);
3263 adapter
->hw
.max_frame_size
= max_frame
;
3269 * e1000_update_stats - Update the board statistics counters
3270 * @adapter: board private structure
3274 e1000_update_stats(struct e1000_adapter
*adapter
)
3276 struct e1000_hw
*hw
= &adapter
->hw
;
3277 struct pci_dev
*pdev
= adapter
->pdev
;
3278 unsigned long flags
;
3281 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3284 * Prevent stats update while adapter is being reset, or if the pci
3285 * connection is down.
3287 if (adapter
->link_speed
== 0)
3289 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3292 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3294 /* these counters are modified from e1000_adjust_tbi_stats,
3295 * called from the interrupt context, so they must only
3296 * be written while holding adapter->stats_lock
3299 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3300 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3301 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3302 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3303 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3304 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3305 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3307 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3308 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3309 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3310 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3311 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3312 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3313 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3316 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3317 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3318 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3319 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3320 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3321 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3322 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3323 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3324 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3325 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3326 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3327 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3328 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3329 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3330 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3331 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3332 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3333 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3334 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3335 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3336 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3337 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3338 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3339 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3340 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3341 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3343 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3344 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3345 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3346 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3347 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3348 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3349 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3352 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3353 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3355 /* used for adaptive IFS */
3357 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3358 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3359 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3360 adapter
->stats
.colc
+= hw
->collision_delta
;
3362 if (hw
->mac_type
>= e1000_82543
) {
3363 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3364 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3365 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3366 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3367 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3368 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3370 if (hw
->mac_type
> e1000_82547_rev_2
) {
3371 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3372 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3374 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3375 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3376 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3377 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3378 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3379 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3380 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3381 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3385 /* Fill out the OS statistics structure */
3387 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3388 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3389 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3390 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3391 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3392 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3396 /* RLEC on some newer hardware can be incorrect so build
3397 * our own version based on RUC and ROC */
3398 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3399 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3400 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3401 adapter
->stats
.cexterr
;
3402 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3403 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3404 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3405 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3406 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3409 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3410 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3411 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3412 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3413 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3415 /* Tx Dropped needs to be maintained elsewhere */
3419 if (hw
->media_type
== e1000_media_type_copper
) {
3420 if ((adapter
->link_speed
== SPEED_1000
) &&
3421 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3422 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3423 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3426 if ((hw
->mac_type
<= e1000_82546
) &&
3427 (hw
->phy_type
== e1000_phy_m88
) &&
3428 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3429 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3432 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3436 * e1000_intr - Interrupt Handler
3437 * @irq: interrupt number
3438 * @data: pointer to a network interface device structure
3439 * @pt_regs: CPU registers structure
3443 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3445 struct net_device
*netdev
= data
;
3446 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3447 struct e1000_hw
*hw
= &adapter
->hw
;
3448 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3449 #ifndef CONFIG_E1000_NAPI
3452 /* Interrupt Auto-Mask...upon reading ICR,
3453 * interrupts are masked. No need for the
3454 * IMC write, but it does mean we should
3455 * account for it ASAP. */
3456 if (likely(hw
->mac_type
>= e1000_82571
))
3457 atomic_inc(&adapter
->irq_sem
);
3460 if (unlikely(!icr
)) {
3461 #ifdef CONFIG_E1000_NAPI
3462 if (hw
->mac_type
>= e1000_82571
)
3463 e1000_irq_enable(adapter
);
3465 return IRQ_NONE
; /* Not our interrupt */
3468 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3469 hw
->get_link_status
= 1;
3470 /* 80003ES2LAN workaround--
3471 * For packet buffer work-around on link down event;
3472 * disable receives here in the ISR and
3473 * reset adapter in watchdog
3475 if (netif_carrier_ok(netdev
) &&
3476 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3477 /* disable receives */
3478 rctl
= E1000_READ_REG(hw
, RCTL
);
3479 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3481 /* guard against interrupt when we're going down */
3482 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3483 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3486 #ifdef CONFIG_E1000_NAPI
3487 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3488 atomic_inc(&adapter
->irq_sem
);
3489 E1000_WRITE_REG(hw
, IMC
, ~0);
3490 E1000_WRITE_FLUSH(hw
);
3492 if (likely(netif_rx_schedule_prep(netdev
)))
3493 __netif_rx_schedule(netdev
);
3495 e1000_irq_enable(adapter
);
3497 /* Writing IMC and IMS is needed for 82547.
3498 * Due to Hub Link bus being occupied, an interrupt
3499 * de-assertion message is not able to be sent.
3500 * When an interrupt assertion message is generated later,
3501 * two messages are re-ordered and sent out.
3502 * That causes APIC to think 82547 is in de-assertion
3503 * state, while 82547 is in assertion state, resulting
3504 * in dead lock. Writing IMC forces 82547 into
3505 * de-assertion state.
3507 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3508 atomic_inc(&adapter
->irq_sem
);
3509 E1000_WRITE_REG(hw
, IMC
, ~0);
3512 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3513 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3514 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3517 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3518 e1000_irq_enable(adapter
);
3525 #ifdef CONFIG_E1000_NAPI
3527 * e1000_clean - NAPI Rx polling callback
3528 * @adapter: board private structure
3532 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3534 struct e1000_adapter
*adapter
;
3535 int work_to_do
= min(*budget
, poll_dev
->quota
);
3536 int tx_cleaned
= 0, work_done
= 0;
3538 /* Must NOT use netdev_priv macro here. */
3539 adapter
= poll_dev
->priv
;
3541 /* Keep link state information with original netdev */
3542 if (!netif_carrier_ok(poll_dev
))
3545 /* e1000_clean is called per-cpu. This lock protects
3546 * tx_ring[0] from being cleaned by multiple cpus
3547 * simultaneously. A failure obtaining the lock means
3548 * tx_ring[0] is currently being cleaned anyway. */
3549 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3550 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3551 &adapter
->tx_ring
[0]);
3552 spin_unlock(&adapter
->tx_queue_lock
);
3555 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3556 &work_done
, work_to_do
);
3558 *budget
-= work_done
;
3559 poll_dev
->quota
-= work_done
;
3561 /* If no Tx and not enough Rx work done, exit the polling mode */
3562 if ((!tx_cleaned
&& (work_done
== 0)) ||
3563 !netif_running(poll_dev
)) {
3565 netif_rx_complete(poll_dev
);
3566 e1000_irq_enable(adapter
);
3575 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3576 * @adapter: board private structure
3580 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3581 struct e1000_tx_ring
*tx_ring
)
3583 struct net_device
*netdev
= adapter
->netdev
;
3584 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3585 struct e1000_buffer
*buffer_info
;
3586 unsigned int i
, eop
;
3587 #ifdef CONFIG_E1000_NAPI
3588 unsigned int count
= 0;
3590 boolean_t cleaned
= FALSE
;
3592 i
= tx_ring
->next_to_clean
;
3593 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3594 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3596 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3597 for (cleaned
= FALSE
; !cleaned
; ) {
3598 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3599 buffer_info
= &tx_ring
->buffer_info
[i
];
3600 cleaned
= (i
== eop
);
3602 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3603 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3605 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3609 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3610 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3611 #ifdef CONFIG_E1000_NAPI
3612 #define E1000_TX_WEIGHT 64
3613 /* weight of a sort for tx, to avoid endless transmit cleanup */
3614 if (count
++ == E1000_TX_WEIGHT
) break;
3618 tx_ring
->next_to_clean
= i
;
3620 #define TX_WAKE_THRESHOLD 32
3621 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3622 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3623 /* Make sure that anybody stopping the queue after this
3624 * sees the new next_to_clean.
3627 if (netif_queue_stopped(netdev
))
3628 netif_wake_queue(netdev
);
3631 if (adapter
->detect_tx_hung
) {
3632 /* Detect a transmit hang in hardware, this serializes the
3633 * check with the clearing of time_stamp and movement of i */
3634 adapter
->detect_tx_hung
= FALSE
;
3635 if (tx_ring
->buffer_info
[eop
].dma
&&
3636 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3637 (adapter
->tx_timeout_factor
* HZ
))
3638 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3639 E1000_STATUS_TXOFF
)) {
3641 /* detected Tx unit hang */
3642 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3646 " next_to_use <%x>\n"
3647 " next_to_clean <%x>\n"
3648 "buffer_info[next_to_clean]\n"
3649 " time_stamp <%lx>\n"
3650 " next_to_watch <%x>\n"
3652 " next_to_watch.status <%x>\n",
3653 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3654 sizeof(struct e1000_tx_ring
)),
3655 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3656 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3657 tx_ring
->next_to_use
,
3658 tx_ring
->next_to_clean
,
3659 tx_ring
->buffer_info
[eop
].time_stamp
,
3662 eop_desc
->upper
.fields
.status
);
3663 netif_stop_queue(netdev
);
3670 * e1000_rx_checksum - Receive Checksum Offload for 82543
3671 * @adapter: board private structure
3672 * @status_err: receive descriptor status and error fields
3673 * @csum: receive descriptor csum field
3674 * @sk_buff: socket buffer with received data
3678 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3679 uint32_t status_err
, uint32_t csum
,
3680 struct sk_buff
*skb
)
3682 uint16_t status
= (uint16_t)status_err
;
3683 uint8_t errors
= (uint8_t)(status_err
>> 24);
3684 skb
->ip_summed
= CHECKSUM_NONE
;
3686 /* 82543 or newer only */
3687 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3688 /* Ignore Checksum bit is set */
3689 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3690 /* TCP/UDP checksum error bit is set */
3691 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3692 /* let the stack verify checksum errors */
3693 adapter
->hw_csum_err
++;
3696 /* TCP/UDP Checksum has not been calculated */
3697 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3698 if (!(status
& E1000_RXD_STAT_TCPCS
))
3701 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3704 /* It must be a TCP or UDP packet with a valid checksum */
3705 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3706 /* TCP checksum is good */
3707 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3708 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3709 /* IP fragment with UDP payload */
3710 /* Hardware complements the payload checksum, so we undo it
3711 * and then put the value in host order for further stack use.
3713 csum
= ntohl(csum
^ 0xFFFF);
3715 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3717 adapter
->hw_csum_good
++;
3721 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3722 * @adapter: board private structure
3726 #ifdef CONFIG_E1000_NAPI
3727 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3728 struct e1000_rx_ring
*rx_ring
,
3729 int *work_done
, int work_to_do
)
3731 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3732 struct e1000_rx_ring
*rx_ring
)
3735 struct net_device
*netdev
= adapter
->netdev
;
3736 struct pci_dev
*pdev
= adapter
->pdev
;
3737 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3738 struct e1000_buffer
*buffer_info
, *next_buffer
;
3739 unsigned long flags
;
3743 int cleaned_count
= 0;
3744 boolean_t cleaned
= FALSE
;
3746 i
= rx_ring
->next_to_clean
;
3747 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3748 buffer_info
= &rx_ring
->buffer_info
[i
];
3750 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3751 struct sk_buff
*skb
;
3753 #ifdef CONFIG_E1000_NAPI
3754 if (*work_done
>= work_to_do
)
3758 status
= rx_desc
->status
;
3759 skb
= buffer_info
->skb
;
3760 buffer_info
->skb
= NULL
;
3762 prefetch(skb
->data
- NET_IP_ALIGN
);
3764 if (++i
== rx_ring
->count
) i
= 0;
3765 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3768 next_buffer
= &rx_ring
->buffer_info
[i
];
3772 pci_unmap_single(pdev
,
3774 buffer_info
->length
,
3775 PCI_DMA_FROMDEVICE
);
3777 length
= le16_to_cpu(rx_desc
->length
);
3779 /* adjust length to remove Ethernet CRC */
3782 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3783 /* All receives must fit into a single buffer */
3784 E1000_DBG("%s: Receive packet consumed multiple"
3785 " buffers\n", netdev
->name
);
3787 buffer_info
->skb
= skb
;
3791 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3792 last_byte
= *(skb
->data
+ length
- 1);
3793 if (TBI_ACCEPT(&adapter
->hw
, status
,
3794 rx_desc
->errors
, length
, last_byte
)) {
3795 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3796 e1000_tbi_adjust_stats(&adapter
->hw
,
3799 spin_unlock_irqrestore(&adapter
->stats_lock
,
3804 buffer_info
->skb
= skb
;
3809 /* code added for copybreak, this should improve
3810 * performance for small packets with large amounts
3811 * of reassembly being done in the stack */
3812 #define E1000_CB_LENGTH 256
3813 if (length
< E1000_CB_LENGTH
) {
3814 struct sk_buff
*new_skb
=
3815 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
3817 skb_reserve(new_skb
, NET_IP_ALIGN
);
3818 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3819 skb
->data
- NET_IP_ALIGN
,
3820 length
+ NET_IP_ALIGN
);
3821 /* save the skb in buffer_info as good */
3822 buffer_info
->skb
= skb
;
3824 skb_put(skb
, length
);
3827 skb_put(skb
, length
);
3829 /* end copybreak code */
3831 /* Receive Checksum Offload */
3832 e1000_rx_checksum(adapter
,
3833 (uint32_t)(status
) |
3834 ((uint32_t)(rx_desc
->errors
) << 24),
3835 le16_to_cpu(rx_desc
->csum
), skb
);
3837 skb
->protocol
= eth_type_trans(skb
, netdev
);
3838 #ifdef CONFIG_E1000_NAPI
3839 if (unlikely(adapter
->vlgrp
&&
3840 (status
& E1000_RXD_STAT_VP
))) {
3841 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3842 le16_to_cpu(rx_desc
->special
) &
3843 E1000_RXD_SPC_VLAN_MASK
);
3845 netif_receive_skb(skb
);
3847 #else /* CONFIG_E1000_NAPI */
3848 if (unlikely(adapter
->vlgrp
&&
3849 (status
& E1000_RXD_STAT_VP
))) {
3850 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3851 le16_to_cpu(rx_desc
->special
) &
3852 E1000_RXD_SPC_VLAN_MASK
);
3856 #endif /* CONFIG_E1000_NAPI */
3857 netdev
->last_rx
= jiffies
;
3860 rx_desc
->status
= 0;
3862 /* return some buffers to hardware, one at a time is too slow */
3863 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3864 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3868 /* use prefetched values */
3870 buffer_info
= next_buffer
;
3872 rx_ring
->next_to_clean
= i
;
3874 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3876 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3882 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3883 * @adapter: board private structure
3887 #ifdef CONFIG_E1000_NAPI
3888 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3889 struct e1000_rx_ring
*rx_ring
,
3890 int *work_done
, int work_to_do
)
3892 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3893 struct e1000_rx_ring
*rx_ring
)
3896 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3897 struct net_device
*netdev
= adapter
->netdev
;
3898 struct pci_dev
*pdev
= adapter
->pdev
;
3899 struct e1000_buffer
*buffer_info
, *next_buffer
;
3900 struct e1000_ps_page
*ps_page
;
3901 struct e1000_ps_page_dma
*ps_page_dma
;
3902 struct sk_buff
*skb
;
3904 uint32_t length
, staterr
;
3905 int cleaned_count
= 0;
3906 boolean_t cleaned
= FALSE
;
3908 i
= rx_ring
->next_to_clean
;
3909 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3910 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3911 buffer_info
= &rx_ring
->buffer_info
[i
];
3913 while (staterr
& E1000_RXD_STAT_DD
) {
3914 ps_page
= &rx_ring
->ps_page
[i
];
3915 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3916 #ifdef CONFIG_E1000_NAPI
3917 if (unlikely(*work_done
>= work_to_do
))
3921 skb
= buffer_info
->skb
;
3923 /* in the packet split case this is header only */
3924 prefetch(skb
->data
- NET_IP_ALIGN
);
3926 if (++i
== rx_ring
->count
) i
= 0;
3927 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3930 next_buffer
= &rx_ring
->buffer_info
[i
];
3934 pci_unmap_single(pdev
, buffer_info
->dma
,
3935 buffer_info
->length
,
3936 PCI_DMA_FROMDEVICE
);
3938 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3939 E1000_DBG("%s: Packet Split buffers didn't pick up"
3940 " the full packet\n", netdev
->name
);
3941 dev_kfree_skb_irq(skb
);
3945 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3946 dev_kfree_skb_irq(skb
);
3950 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3952 if (unlikely(!length
)) {
3953 E1000_DBG("%s: Last part of the packet spanning"
3954 " multiple descriptors\n", netdev
->name
);
3955 dev_kfree_skb_irq(skb
);
3960 skb_put(skb
, length
);
3963 /* this looks ugly, but it seems compiler issues make it
3964 more efficient than reusing j */
3965 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3967 /* page alloc/put takes too long and effects small packet
3968 * throughput, so unsplit small packets and save the alloc/put*/
3969 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3971 /* there is no documentation about how to call
3972 * kmap_atomic, so we can't hold the mapping
3974 pci_dma_sync_single_for_cpu(pdev
,
3975 ps_page_dma
->ps_page_dma
[0],
3977 PCI_DMA_FROMDEVICE
);
3978 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3979 KM_SKB_DATA_SOFTIRQ
);
3980 memcpy(skb
->tail
, vaddr
, l1
);
3981 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3982 pci_dma_sync_single_for_device(pdev
,
3983 ps_page_dma
->ps_page_dma
[0],
3984 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3985 /* remove the CRC */
3992 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3993 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3995 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3996 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3997 ps_page_dma
->ps_page_dma
[j
] = 0;
3998 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4000 ps_page
->ps_page
[j
] = NULL
;
4002 skb
->data_len
+= length
;
4003 skb
->truesize
+= length
;
4006 /* strip the ethernet crc, problem is we're using pages now so
4007 * this whole operation can get a little cpu intensive */
4008 pskb_trim(skb
, skb
->len
- 4);
4011 e1000_rx_checksum(adapter
, staterr
,
4012 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4013 skb
->protocol
= eth_type_trans(skb
, netdev
);
4015 if (likely(rx_desc
->wb
.upper
.header_status
&
4016 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4017 adapter
->rx_hdr_split
++;
4018 #ifdef CONFIG_E1000_NAPI
4019 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4020 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4021 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4022 E1000_RXD_SPC_VLAN_MASK
);
4024 netif_receive_skb(skb
);
4026 #else /* CONFIG_E1000_NAPI */
4027 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4028 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4029 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4030 E1000_RXD_SPC_VLAN_MASK
);
4034 #endif /* CONFIG_E1000_NAPI */
4035 netdev
->last_rx
= jiffies
;
4038 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4039 buffer_info
->skb
= NULL
;
4041 /* return some buffers to hardware, one at a time is too slow */
4042 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4043 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4047 /* use prefetched values */
4049 buffer_info
= next_buffer
;
4051 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4053 rx_ring
->next_to_clean
= i
;
4055 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4057 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4063 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4064 * @adapter: address of board private structure
4068 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4069 struct e1000_rx_ring
*rx_ring
,
4072 struct net_device
*netdev
= adapter
->netdev
;
4073 struct pci_dev
*pdev
= adapter
->pdev
;
4074 struct e1000_rx_desc
*rx_desc
;
4075 struct e1000_buffer
*buffer_info
;
4076 struct sk_buff
*skb
;
4078 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4080 i
= rx_ring
->next_to_use
;
4081 buffer_info
= &rx_ring
->buffer_info
[i
];
4083 while (cleaned_count
--) {
4084 skb
= buffer_info
->skb
;
4090 skb
= netdev_alloc_skb(netdev
, bufsz
);
4091 if (unlikely(!skb
)) {
4092 /* Better luck next round */
4093 adapter
->alloc_rx_buff_failed
++;
4097 /* Fix for errata 23, can't cross 64kB boundary */
4098 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4099 struct sk_buff
*oldskb
= skb
;
4100 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4101 "at %p\n", bufsz
, skb
->data
);
4102 /* Try again, without freeing the previous */
4103 skb
= netdev_alloc_skb(netdev
, bufsz
);
4104 /* Failed allocation, critical failure */
4106 dev_kfree_skb(oldskb
);
4110 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4113 dev_kfree_skb(oldskb
);
4114 break; /* while !buffer_info->skb */
4117 /* Use new allocation */
4118 dev_kfree_skb(oldskb
);
4120 /* Make buffer alignment 2 beyond a 16 byte boundary
4121 * this will result in a 16 byte aligned IP header after
4122 * the 14 byte MAC header is removed
4124 skb_reserve(skb
, NET_IP_ALIGN
);
4126 buffer_info
->skb
= skb
;
4127 buffer_info
->length
= adapter
->rx_buffer_len
;
4129 buffer_info
->dma
= pci_map_single(pdev
,
4131 adapter
->rx_buffer_len
,
4132 PCI_DMA_FROMDEVICE
);
4134 /* Fix for errata 23, can't cross 64kB boundary */
4135 if (!e1000_check_64k_bound(adapter
,
4136 (void *)(unsigned long)buffer_info
->dma
,
4137 adapter
->rx_buffer_len
)) {
4138 DPRINTK(RX_ERR
, ERR
,
4139 "dma align check failed: %u bytes at %p\n",
4140 adapter
->rx_buffer_len
,
4141 (void *)(unsigned long)buffer_info
->dma
);
4143 buffer_info
->skb
= NULL
;
4145 pci_unmap_single(pdev
, buffer_info
->dma
,
4146 adapter
->rx_buffer_len
,
4147 PCI_DMA_FROMDEVICE
);
4149 break; /* while !buffer_info->skb */
4151 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4152 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4154 if (unlikely(++i
== rx_ring
->count
))
4156 buffer_info
= &rx_ring
->buffer_info
[i
];
4159 if (likely(rx_ring
->next_to_use
!= i
)) {
4160 rx_ring
->next_to_use
= i
;
4161 if (unlikely(i
-- == 0))
4162 i
= (rx_ring
->count
- 1);
4164 /* Force memory writes to complete before letting h/w
4165 * know there are new descriptors to fetch. (Only
4166 * applicable for weak-ordered memory model archs,
4167 * such as IA-64). */
4169 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4174 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4175 * @adapter: address of board private structure
4179 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4180 struct e1000_rx_ring
*rx_ring
,
4183 struct net_device
*netdev
= adapter
->netdev
;
4184 struct pci_dev
*pdev
= adapter
->pdev
;
4185 union e1000_rx_desc_packet_split
*rx_desc
;
4186 struct e1000_buffer
*buffer_info
;
4187 struct e1000_ps_page
*ps_page
;
4188 struct e1000_ps_page_dma
*ps_page_dma
;
4189 struct sk_buff
*skb
;
4192 i
= rx_ring
->next_to_use
;
4193 buffer_info
= &rx_ring
->buffer_info
[i
];
4194 ps_page
= &rx_ring
->ps_page
[i
];
4195 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4197 while (cleaned_count
--) {
4198 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4200 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4201 if (j
< adapter
->rx_ps_pages
) {
4202 if (likely(!ps_page
->ps_page
[j
])) {
4203 ps_page
->ps_page
[j
] =
4204 alloc_page(GFP_ATOMIC
);
4205 if (unlikely(!ps_page
->ps_page
[j
])) {
4206 adapter
->alloc_rx_buff_failed
++;
4209 ps_page_dma
->ps_page_dma
[j
] =
4211 ps_page
->ps_page
[j
],
4213 PCI_DMA_FROMDEVICE
);
4215 /* Refresh the desc even if buffer_addrs didn't
4216 * change because each write-back erases
4219 rx_desc
->read
.buffer_addr
[j
+1] =
4220 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4222 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4225 skb
= netdev_alloc_skb(netdev
,
4226 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4228 if (unlikely(!skb
)) {
4229 adapter
->alloc_rx_buff_failed
++;
4233 /* Make buffer alignment 2 beyond a 16 byte boundary
4234 * this will result in a 16 byte aligned IP header after
4235 * the 14 byte MAC header is removed
4237 skb_reserve(skb
, NET_IP_ALIGN
);
4239 buffer_info
->skb
= skb
;
4240 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4241 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4242 adapter
->rx_ps_bsize0
,
4243 PCI_DMA_FROMDEVICE
);
4245 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4247 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4248 buffer_info
= &rx_ring
->buffer_info
[i
];
4249 ps_page
= &rx_ring
->ps_page
[i
];
4250 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4254 if (likely(rx_ring
->next_to_use
!= i
)) {
4255 rx_ring
->next_to_use
= i
;
4256 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4258 /* Force memory writes to complete before letting h/w
4259 * know there are new descriptors to fetch. (Only
4260 * applicable for weak-ordered memory model archs,
4261 * such as IA-64). */
4263 /* Hardware increments by 16 bytes, but packet split
4264 * descriptors are 32 bytes...so we increment tail
4267 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4272 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4277 e1000_smartspeed(struct e1000_adapter
*adapter
)
4279 uint16_t phy_status
;
4282 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4283 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4286 if (adapter
->smartspeed
== 0) {
4287 /* If Master/Slave config fault is asserted twice,
4288 * we assume back-to-back */
4289 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4290 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4291 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4292 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4293 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4294 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4295 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4296 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4298 adapter
->smartspeed
++;
4299 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4300 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4302 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4303 MII_CR_RESTART_AUTO_NEG
);
4304 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4309 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4310 /* If still no link, perhaps using 2/3 pair cable */
4311 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4312 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4313 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4314 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4315 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4316 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4317 MII_CR_RESTART_AUTO_NEG
);
4318 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4321 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4322 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4323 adapter
->smartspeed
= 0;
4334 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4340 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4354 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4356 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4357 struct mii_ioctl_data
*data
= if_mii(ifr
);
4361 unsigned long flags
;
4363 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4368 data
->phy_id
= adapter
->hw
.phy_addr
;
4371 if (!capable(CAP_NET_ADMIN
))
4373 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4374 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4376 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4379 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4382 if (!capable(CAP_NET_ADMIN
))
4384 if (data
->reg_num
& ~(0x1F))
4386 mii_reg
= data
->val_in
;
4387 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4388 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4390 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4393 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4394 switch (data
->reg_num
) {
4396 if (mii_reg
& MII_CR_POWER_DOWN
)
4398 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4399 adapter
->hw
.autoneg
= 1;
4400 adapter
->hw
.autoneg_advertised
= 0x2F;
4403 spddplx
= SPEED_1000
;
4404 else if (mii_reg
& 0x2000)
4405 spddplx
= SPEED_100
;
4408 spddplx
+= (mii_reg
& 0x100)
4411 retval
= e1000_set_spd_dplx(adapter
,
4414 spin_unlock_irqrestore(
4415 &adapter
->stats_lock
,
4420 if (netif_running(adapter
->netdev
))
4421 e1000_reinit_locked(adapter
);
4423 e1000_reset(adapter
);
4425 case M88E1000_PHY_SPEC_CTRL
:
4426 case M88E1000_EXT_PHY_SPEC_CTRL
:
4427 if (e1000_phy_reset(&adapter
->hw
)) {
4428 spin_unlock_irqrestore(
4429 &adapter
->stats_lock
, flags
);
4435 switch (data
->reg_num
) {
4437 if (mii_reg
& MII_CR_POWER_DOWN
)
4439 if (netif_running(adapter
->netdev
))
4440 e1000_reinit_locked(adapter
);
4442 e1000_reset(adapter
);
4446 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4451 return E1000_SUCCESS
;
4455 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4457 struct e1000_adapter
*adapter
= hw
->back
;
4458 int ret_val
= pci_set_mwi(adapter
->pdev
);
4461 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4465 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4467 struct e1000_adapter
*adapter
= hw
->back
;
4469 pci_clear_mwi(adapter
->pdev
);
4473 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4475 struct e1000_adapter
*adapter
= hw
->back
;
4477 pci_read_config_word(adapter
->pdev
, reg
, value
);
4481 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4483 struct e1000_adapter
*adapter
= hw
->back
;
4485 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4489 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4491 struct e1000_adapter
*adapter
= hw
->back
;
4492 uint16_t cap_offset
;
4494 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4496 return -E1000_ERR_CONFIG
;
4498 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4500 return E1000_SUCCESS
;
4505 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4511 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4513 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4514 uint32_t ctrl
, rctl
;
4516 e1000_irq_disable(adapter
);
4517 adapter
->vlgrp
= grp
;
4520 /* enable VLAN tag insert/strip */
4521 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4522 ctrl
|= E1000_CTRL_VME
;
4523 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4525 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4526 /* enable VLAN receive filtering */
4527 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4528 rctl
|= E1000_RCTL_VFE
;
4529 rctl
&= ~E1000_RCTL_CFIEN
;
4530 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4531 e1000_update_mng_vlan(adapter
);
4534 /* disable VLAN tag insert/strip */
4535 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4536 ctrl
&= ~E1000_CTRL_VME
;
4537 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4539 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4540 /* disable VLAN filtering */
4541 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4542 rctl
&= ~E1000_RCTL_VFE
;
4543 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4544 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4545 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4546 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4551 e1000_irq_enable(adapter
);
4555 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4557 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4558 uint32_t vfta
, index
;
4560 if ((adapter
->hw
.mng_cookie
.status
&
4561 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4562 (vid
== adapter
->mng_vlan_id
))
4564 /* add VID to filter table */
4565 index
= (vid
>> 5) & 0x7F;
4566 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4567 vfta
|= (1 << (vid
& 0x1F));
4568 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4572 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4574 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4575 uint32_t vfta
, index
;
4577 e1000_irq_disable(adapter
);
4580 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4582 e1000_irq_enable(adapter
);
4584 if ((adapter
->hw
.mng_cookie
.status
&
4585 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4586 (vid
== adapter
->mng_vlan_id
)) {
4587 /* release control to f/w */
4588 e1000_release_hw_control(adapter
);
4592 /* remove VID from filter table */
4593 index
= (vid
>> 5) & 0x7F;
4594 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4595 vfta
&= ~(1 << (vid
& 0x1F));
4596 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4600 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4602 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4604 if (adapter
->vlgrp
) {
4606 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4607 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4609 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4615 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4617 adapter
->hw
.autoneg
= 0;
4619 /* Fiber NICs only allow 1000 gbps Full duplex */
4620 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4621 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4622 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4627 case SPEED_10
+ DUPLEX_HALF
:
4628 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4630 case SPEED_10
+ DUPLEX_FULL
:
4631 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4633 case SPEED_100
+ DUPLEX_HALF
:
4634 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4636 case SPEED_100
+ DUPLEX_FULL
:
4637 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4639 case SPEED_1000
+ DUPLEX_FULL
:
4640 adapter
->hw
.autoneg
= 1;
4641 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4643 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4645 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4652 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4653 * bus we're on (PCI(X) vs. PCI-E)
4655 #define PCIE_CONFIG_SPACE_LEN 256
4656 #define PCI_CONFIG_SPACE_LEN 64
4658 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4660 struct pci_dev
*dev
= adapter
->pdev
;
4664 if (adapter
->hw
.mac_type
>= e1000_82571
)
4665 size
= PCIE_CONFIG_SPACE_LEN
;
4667 size
= PCI_CONFIG_SPACE_LEN
;
4669 WARN_ON(adapter
->config_space
!= NULL
);
4671 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4672 if (!adapter
->config_space
) {
4673 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4676 for (i
= 0; i
< (size
/ 4); i
++)
4677 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4682 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4684 struct pci_dev
*dev
= adapter
->pdev
;
4688 if (adapter
->config_space
== NULL
)
4691 if (adapter
->hw
.mac_type
>= e1000_82571
)
4692 size
= PCIE_CONFIG_SPACE_LEN
;
4694 size
= PCI_CONFIG_SPACE_LEN
;
4695 for (i
= 0; i
< (size
/ 4); i
++)
4696 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4697 kfree(adapter
->config_space
);
4698 adapter
->config_space
= NULL
;
4701 #endif /* CONFIG_PM */
4704 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4706 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4707 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4708 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4709 uint32_t wufc
= adapter
->wol
;
4714 netif_device_detach(netdev
);
4716 if (netif_running(netdev
)) {
4717 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4718 e1000_down(adapter
);
4722 /* Implement our own version of pci_save_state(pdev) because pci-
4723 * express adapters have 256-byte config spaces. */
4724 retval
= e1000_pci_save_state(adapter
);
4729 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4730 if (status
& E1000_STATUS_LU
)
4731 wufc
&= ~E1000_WUFC_LNKC
;
4734 e1000_setup_rctl(adapter
);
4735 e1000_set_multi(netdev
);
4737 /* turn on all-multi mode if wake on multicast is enabled */
4738 if (wufc
& E1000_WUFC_MC
) {
4739 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4740 rctl
|= E1000_RCTL_MPE
;
4741 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4744 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4745 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4746 /* advertise wake from D3Cold */
4747 #define E1000_CTRL_ADVD3WUC 0x00100000
4748 /* phy power management enable */
4749 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4750 ctrl
|= E1000_CTRL_ADVD3WUC
|
4751 E1000_CTRL_EN_PHY_PWR_MGMT
;
4752 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4755 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4756 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4757 /* keep the laser running in D3 */
4758 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4759 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4760 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4763 /* Allow time for pending master requests to run */
4764 e1000_disable_pciex_master(&adapter
->hw
);
4766 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4767 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4768 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4769 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4771 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4772 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4773 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4774 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4777 if (adapter
->hw
.mac_type
< e1000_82571
&&
4778 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4779 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4780 if (manc
& E1000_MANC_SMBUS_EN
) {
4781 manc
|= E1000_MANC_ARP_EN
;
4782 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4783 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4784 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4788 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
4789 e1000_phy_powerdown_workaround(&adapter
->hw
);
4791 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4792 * would have already happened in close and is redundant. */
4793 e1000_release_hw_control(adapter
);
4795 pci_disable_device(pdev
);
4797 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4804 e1000_resume(struct pci_dev
*pdev
)
4806 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4807 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4810 pci_set_power_state(pdev
, PCI_D0
);
4811 e1000_pci_restore_state(adapter
);
4812 if ((err
= pci_enable_device(pdev
))) {
4813 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4816 pci_set_master(pdev
);
4818 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4819 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4821 e1000_reset(adapter
);
4822 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4824 if (netif_running(netdev
))
4827 netif_device_attach(netdev
);
4829 if (adapter
->hw
.mac_type
< e1000_82571
&&
4830 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4831 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4832 manc
&= ~(E1000_MANC_ARP_EN
);
4833 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4836 /* If the controller is 82573 and f/w is AMT, do not set
4837 * DRV_LOAD until the interface is up. For all other cases,
4838 * let the f/w know that the h/w is now under the control
4840 if (adapter
->hw
.mac_type
!= e1000_82573
||
4841 !e1000_check_mng_mode(&adapter
->hw
))
4842 e1000_get_hw_control(adapter
);
4848 static void e1000_shutdown(struct pci_dev
*pdev
)
4850 e1000_suspend(pdev
, PMSG_SUSPEND
);
4853 #ifdef CONFIG_NET_POLL_CONTROLLER
4855 * Polling 'interrupt' - used by things like netconsole to send skbs
4856 * without having to re-enable interrupts. It's not called while
4857 * the interrupt routine is executing.
4860 e1000_netpoll(struct net_device
*netdev
)
4862 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4864 disable_irq(adapter
->pdev
->irq
);
4865 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4866 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4867 #ifndef CONFIG_E1000_NAPI
4868 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4870 enable_irq(adapter
->pdev
->irq
);
4875 * e1000_io_error_detected - called when PCI error is detected
4876 * @pdev: Pointer to PCI device
4877 * @state: The current pci conneection state
4879 * This function is called after a PCI bus error affecting
4880 * this device has been detected.
4882 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4884 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4885 struct e1000_adapter
*adapter
= netdev
->priv
;
4887 netif_device_detach(netdev
);
4889 if (netif_running(netdev
))
4890 e1000_down(adapter
);
4891 pci_disable_device(pdev
);
4893 /* Request a slot slot reset. */
4894 return PCI_ERS_RESULT_NEED_RESET
;
4898 * e1000_io_slot_reset - called after the pci bus has been reset.
4899 * @pdev: Pointer to PCI device
4901 * Restart the card from scratch, as if from a cold-boot. Implementation
4902 * resembles the first-half of the e1000_resume routine.
4904 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4906 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4907 struct e1000_adapter
*adapter
= netdev
->priv
;
4909 if (pci_enable_device(pdev
)) {
4910 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4911 return PCI_ERS_RESULT_DISCONNECT
;
4913 pci_set_master(pdev
);
4915 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4916 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4918 /* Perform card reset only on one instance of the card */
4919 if (PCI_FUNC (pdev
->devfn
) != 0)
4920 return PCI_ERS_RESULT_RECOVERED
;
4922 e1000_reset(adapter
);
4923 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4925 return PCI_ERS_RESULT_RECOVERED
;
4929 * e1000_io_resume - called when traffic can start flowing again.
4930 * @pdev: Pointer to PCI device
4932 * This callback is called when the error recovery driver tells us that
4933 * its OK to resume normal operation. Implementation resembles the
4934 * second-half of the e1000_resume routine.
4936 static void e1000_io_resume(struct pci_dev
*pdev
)
4938 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4939 struct e1000_adapter
*adapter
= netdev
->priv
;
4940 uint32_t manc
, swsm
;
4942 if (netif_running(netdev
)) {
4943 if (e1000_up(adapter
)) {
4944 printk("e1000: can't bring device back up after reset\n");
4949 netif_device_attach(netdev
);
4951 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4952 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4953 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4954 manc
&= ~(E1000_MANC_ARP_EN
);
4955 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4958 switch (adapter
->hw
.mac_type
) {
4960 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4961 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4962 swsm
| E1000_SWSM_DRV_LOAD
);
4968 if (netif_running(netdev
))
4969 mod_timer(&adapter
->watchdog_timer
, jiffies
);