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 *******************************************************************************/
30 #include <net/ip6_checksum.h>
32 char e1000_driver_name
[] = "e1000";
33 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
34 #ifndef CONFIG_E1000_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "7.3.15-k2"DRIVERNAPI
40 char e1000_driver_version
[] = DRV_VERSION
;
41 static char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* e1000_pci_tbl - PCI Device ID Table
45 * Last entry must be all 0s
48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
50 static struct pci_device_id e1000_pci_tbl
[] = {
51 INTEL_E1000_ETHERNET_DEVICE(0x1000),
52 INTEL_E1000_ETHERNET_DEVICE(0x1001),
53 INTEL_E1000_ETHERNET_DEVICE(0x1004),
54 INTEL_E1000_ETHERNET_DEVICE(0x1008),
55 INTEL_E1000_ETHERNET_DEVICE(0x1009),
56 INTEL_E1000_ETHERNET_DEVICE(0x100C),
57 INTEL_E1000_ETHERNET_DEVICE(0x100D),
58 INTEL_E1000_ETHERNET_DEVICE(0x100E),
59 INTEL_E1000_ETHERNET_DEVICE(0x100F),
60 INTEL_E1000_ETHERNET_DEVICE(0x1010),
61 INTEL_E1000_ETHERNET_DEVICE(0x1011),
62 INTEL_E1000_ETHERNET_DEVICE(0x1012),
63 INTEL_E1000_ETHERNET_DEVICE(0x1013),
64 INTEL_E1000_ETHERNET_DEVICE(0x1014),
65 INTEL_E1000_ETHERNET_DEVICE(0x1015),
66 INTEL_E1000_ETHERNET_DEVICE(0x1016),
67 INTEL_E1000_ETHERNET_DEVICE(0x1017),
68 INTEL_E1000_ETHERNET_DEVICE(0x1018),
69 INTEL_E1000_ETHERNET_DEVICE(0x1019),
70 INTEL_E1000_ETHERNET_DEVICE(0x101A),
71 INTEL_E1000_ETHERNET_DEVICE(0x101D),
72 INTEL_E1000_ETHERNET_DEVICE(0x101E),
73 INTEL_E1000_ETHERNET_DEVICE(0x1026),
74 INTEL_E1000_ETHERNET_DEVICE(0x1027),
75 INTEL_E1000_ETHERNET_DEVICE(0x1028),
76 INTEL_E1000_ETHERNET_DEVICE(0x1049),
77 INTEL_E1000_ETHERNET_DEVICE(0x104A),
78 INTEL_E1000_ETHERNET_DEVICE(0x104B),
79 INTEL_E1000_ETHERNET_DEVICE(0x104C),
80 INTEL_E1000_ETHERNET_DEVICE(0x104D),
81 INTEL_E1000_ETHERNET_DEVICE(0x105E),
82 INTEL_E1000_ETHERNET_DEVICE(0x105F),
83 INTEL_E1000_ETHERNET_DEVICE(0x1060),
84 INTEL_E1000_ETHERNET_DEVICE(0x1075),
85 INTEL_E1000_ETHERNET_DEVICE(0x1076),
86 INTEL_E1000_ETHERNET_DEVICE(0x1077),
87 INTEL_E1000_ETHERNET_DEVICE(0x1078),
88 INTEL_E1000_ETHERNET_DEVICE(0x1079),
89 INTEL_E1000_ETHERNET_DEVICE(0x107A),
90 INTEL_E1000_ETHERNET_DEVICE(0x107B),
91 INTEL_E1000_ETHERNET_DEVICE(0x107C),
92 INTEL_E1000_ETHERNET_DEVICE(0x107D),
93 INTEL_E1000_ETHERNET_DEVICE(0x107E),
94 INTEL_E1000_ETHERNET_DEVICE(0x107F),
95 INTEL_E1000_ETHERNET_DEVICE(0x108A),
96 INTEL_E1000_ETHERNET_DEVICE(0x108B),
97 INTEL_E1000_ETHERNET_DEVICE(0x108C),
98 INTEL_E1000_ETHERNET_DEVICE(0x1096),
99 INTEL_E1000_ETHERNET_DEVICE(0x1098),
100 INTEL_E1000_ETHERNET_DEVICE(0x1099),
101 INTEL_E1000_ETHERNET_DEVICE(0x109A),
102 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
104 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
106 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
107 INTEL_E1000_ETHERNET_DEVICE(0x10BC),
108 INTEL_E1000_ETHERNET_DEVICE(0x10C4),
109 INTEL_E1000_ETHERNET_DEVICE(0x10C5),
110 /* required last entry */
114 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
116 int e1000_up(struct e1000_adapter
*adapter
);
117 void e1000_down(struct e1000_adapter
*adapter
);
118 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
119 void e1000_reset(struct e1000_adapter
*adapter
);
120 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
121 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
122 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
123 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
124 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
125 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
126 struct e1000_tx_ring
*txdr
);
127 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
128 struct e1000_rx_ring
*rxdr
);
129 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
130 struct e1000_tx_ring
*tx_ring
);
131 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
132 struct e1000_rx_ring
*rx_ring
);
133 void e1000_update_stats(struct e1000_adapter
*adapter
);
135 static int e1000_init_module(void);
136 static void e1000_exit_module(void);
137 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
138 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
139 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
140 static int e1000_sw_init(struct e1000_adapter
*adapter
);
141 static int e1000_open(struct net_device
*netdev
);
142 static int e1000_close(struct net_device
*netdev
);
143 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
144 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
145 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
146 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
147 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
148 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
149 struct e1000_tx_ring
*tx_ring
);
150 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
151 struct e1000_rx_ring
*rx_ring
);
152 static void e1000_set_multi(struct net_device
*netdev
);
153 static void e1000_update_phy_info(unsigned long data
);
154 static void e1000_watchdog(unsigned long data
);
155 static void e1000_82547_tx_fifo_stall(unsigned long data
);
156 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
157 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
158 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
159 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
160 static irqreturn_t
e1000_intr(int irq
, void *data
);
161 #ifdef CONFIG_PCI_MSI
162 static irqreturn_t
e1000_intr_msi(int irq
, void *data
);
164 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
165 struct e1000_tx_ring
*tx_ring
);
166 #ifdef CONFIG_E1000_NAPI
167 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
168 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
,
170 int *work_done
, int work_to_do
);
171 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
172 struct e1000_rx_ring
*rx_ring
,
173 int *work_done
, int work_to_do
);
175 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
176 struct e1000_rx_ring
*rx_ring
);
177 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
178 struct e1000_rx_ring
*rx_ring
);
180 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
181 struct e1000_rx_ring
*rx_ring
,
183 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
184 struct e1000_rx_ring
*rx_ring
,
186 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
187 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
189 void e1000_set_ethtool_ops(struct net_device
*netdev
);
190 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
191 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
192 static void e1000_tx_timeout(struct net_device
*dev
);
193 static void e1000_reset_task(struct net_device
*dev
);
194 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
195 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
196 struct sk_buff
*skb
);
198 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
199 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
200 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
201 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
203 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
205 static int e1000_resume(struct pci_dev
*pdev
);
207 static void e1000_shutdown(struct pci_dev
*pdev
);
209 #ifdef CONFIG_NET_POLL_CONTROLLER
210 /* for netdump / net console */
211 static void e1000_netpoll (struct net_device
*netdev
);
214 extern void e1000_check_options(struct e1000_adapter
*adapter
);
216 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
217 pci_channel_state_t state
);
218 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
219 static void e1000_io_resume(struct pci_dev
*pdev
);
221 static struct pci_error_handlers e1000_err_handler
= {
222 .error_detected
= e1000_io_error_detected
,
223 .slot_reset
= e1000_io_slot_reset
,
224 .resume
= e1000_io_resume
,
227 static struct pci_driver e1000_driver
= {
228 .name
= e1000_driver_name
,
229 .id_table
= e1000_pci_tbl
,
230 .probe
= e1000_probe
,
231 .remove
= __devexit_p(e1000_remove
),
233 /* Power Managment Hooks */
234 .suspend
= e1000_suspend
,
235 .resume
= e1000_resume
,
237 .shutdown
= e1000_shutdown
,
238 .err_handler
= &e1000_err_handler
241 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
242 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
243 MODULE_LICENSE("GPL");
244 MODULE_VERSION(DRV_VERSION
);
246 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
247 module_param(debug
, int, 0);
248 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
251 * e1000_init_module - Driver Registration Routine
253 * e1000_init_module is the first routine called when the driver is
254 * loaded. All it does is register with the PCI subsystem.
258 e1000_init_module(void)
261 printk(KERN_INFO
"%s - version %s\n",
262 e1000_driver_string
, e1000_driver_version
);
264 printk(KERN_INFO
"%s\n", e1000_copyright
);
266 ret
= pci_register_driver(&e1000_driver
);
271 module_init(e1000_init_module
);
274 * e1000_exit_module - Driver Exit Cleanup Routine
276 * e1000_exit_module is called just before the driver is removed
281 e1000_exit_module(void)
283 pci_unregister_driver(&e1000_driver
);
286 module_exit(e1000_exit_module
);
288 static int e1000_request_irq(struct e1000_adapter
*adapter
)
290 struct net_device
*netdev
= adapter
->netdev
;
294 #ifdef CONFIG_PCI_MSI
295 if (adapter
->hw
.mac_type
>= e1000_82571
) {
296 adapter
->have_msi
= TRUE
;
297 if ((err
= pci_enable_msi(adapter
->pdev
))) {
299 "Unable to allocate MSI interrupt Error: %d\n", err
);
300 adapter
->have_msi
= FALSE
;
303 if (adapter
->have_msi
) {
304 flags
&= ~IRQF_SHARED
;
305 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, flags
,
306 netdev
->name
, netdev
);
309 "Unable to allocate interrupt Error: %d\n", err
);
312 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
313 netdev
->name
, netdev
)))
315 "Unable to allocate interrupt Error: %d\n", err
);
320 static void e1000_free_irq(struct e1000_adapter
*adapter
)
322 struct net_device
*netdev
= adapter
->netdev
;
324 free_irq(adapter
->pdev
->irq
, netdev
);
326 #ifdef CONFIG_PCI_MSI
327 if (adapter
->have_msi
)
328 pci_disable_msi(adapter
->pdev
);
333 * e1000_irq_disable - Mask off interrupt generation on the NIC
334 * @adapter: board private structure
338 e1000_irq_disable(struct e1000_adapter
*adapter
)
340 atomic_inc(&adapter
->irq_sem
);
341 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
342 E1000_WRITE_FLUSH(&adapter
->hw
);
343 synchronize_irq(adapter
->pdev
->irq
);
347 * e1000_irq_enable - Enable default interrupt generation settings
348 * @adapter: board private structure
352 e1000_irq_enable(struct e1000_adapter
*adapter
)
354 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
355 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
356 E1000_WRITE_FLUSH(&adapter
->hw
);
361 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
363 struct net_device
*netdev
= adapter
->netdev
;
364 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
365 uint16_t old_vid
= adapter
->mng_vlan_id
;
366 if (adapter
->vlgrp
) {
367 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
368 if (adapter
->hw
.mng_cookie
.status
&
369 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
370 e1000_vlan_rx_add_vid(netdev
, vid
);
371 adapter
->mng_vlan_id
= vid
;
373 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
375 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
377 !adapter
->vlgrp
->vlan_devices
[old_vid
])
378 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
380 adapter
->mng_vlan_id
= vid
;
385 * e1000_release_hw_control - release control of the h/w to f/w
386 * @adapter: address of board private structure
388 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
389 * For ASF and Pass Through versions of f/w this means that the
390 * driver is no longer loaded. For AMT version (only with 82573) i
391 * of the f/w this means that the network i/f is closed.
396 e1000_release_hw_control(struct e1000_adapter
*adapter
)
402 /* Let firmware taken over control of h/w */
403 switch (adapter
->hw
.mac_type
) {
406 case e1000_80003es2lan
:
407 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
408 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
409 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
412 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
413 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
414 swsm
& ~E1000_SWSM_DRV_LOAD
);
416 extcnf
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
417 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
418 extcnf
& ~E1000_CTRL_EXT_DRV_LOAD
);
426 * e1000_get_hw_control - get control of the h/w from f/w
427 * @adapter: address of board private structure
429 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
430 * For ASF and Pass Through versions of f/w this means that
431 * the driver is loaded. For AMT version (only with 82573)
432 * of the f/w this means that the network i/f is open.
437 e1000_get_hw_control(struct e1000_adapter
*adapter
)
443 /* Let firmware know the driver has taken over */
444 switch (adapter
->hw
.mac_type
) {
447 case e1000_80003es2lan
:
448 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
449 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
450 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
453 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
454 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
455 swsm
| E1000_SWSM_DRV_LOAD
);
458 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
459 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
460 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
468 e1000_up(struct e1000_adapter
*adapter
)
470 struct net_device
*netdev
= adapter
->netdev
;
473 /* hardware has been reset, we need to reload some things */
475 e1000_set_multi(netdev
);
477 e1000_restore_vlan(adapter
);
479 e1000_configure_tx(adapter
);
480 e1000_setup_rctl(adapter
);
481 e1000_configure_rx(adapter
);
482 /* call E1000_DESC_UNUSED which always leaves
483 * at least 1 descriptor unused to make sure
484 * next_to_use != next_to_clean */
485 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
486 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
487 adapter
->alloc_rx_buf(adapter
, ring
,
488 E1000_DESC_UNUSED(ring
));
491 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
493 #ifdef CONFIG_E1000_NAPI
494 netif_poll_enable(netdev
);
496 e1000_irq_enable(adapter
);
498 clear_bit(__E1000_DOWN
, &adapter
->flags
);
500 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
505 * e1000_power_up_phy - restore link in case the phy was powered down
506 * @adapter: address of board private structure
508 * The phy may be powered down to save power and turn off link when the
509 * driver is unloaded and wake on lan is not enabled (among others)
510 * *** this routine MUST be followed by a call to e1000_reset ***
514 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
516 uint16_t mii_reg
= 0;
518 /* Just clear the power down bit to wake the phy back up */
519 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
520 /* according to the manual, the phy will retain its
521 * settings across a power-down/up cycle */
522 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
523 mii_reg
&= ~MII_CR_POWER_DOWN
;
524 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
528 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
530 /* Power down the PHY so no link is implied when interface is down *
531 * The PHY cannot be powered down if any of the following is TRUE *
534 * (c) SoL/IDER session is active */
535 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
536 adapter
->hw
.media_type
== e1000_media_type_copper
) {
537 uint16_t mii_reg
= 0;
539 switch (adapter
->hw
.mac_type
) {
542 case e1000_82545_rev_3
:
544 case e1000_82546_rev_3
:
546 case e1000_82541_rev_2
:
548 case e1000_82547_rev_2
:
549 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
556 case e1000_80003es2lan
:
558 if (e1000_check_mng_mode(&adapter
->hw
) ||
559 e1000_check_phy_reset_block(&adapter
->hw
))
565 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
566 mii_reg
|= MII_CR_POWER_DOWN
;
567 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
575 e1000_down(struct e1000_adapter
*adapter
)
577 struct net_device
*netdev
= adapter
->netdev
;
579 /* signal that we're down so the interrupt handler does not
580 * reschedule our watchdog timer */
581 set_bit(__E1000_DOWN
, &adapter
->flags
);
583 e1000_irq_disable(adapter
);
585 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
586 del_timer_sync(&adapter
->watchdog_timer
);
587 del_timer_sync(&adapter
->phy_info_timer
);
589 #ifdef CONFIG_E1000_NAPI
590 netif_poll_disable(netdev
);
592 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
593 adapter
->link_speed
= 0;
594 adapter
->link_duplex
= 0;
595 netif_carrier_off(netdev
);
596 netif_stop_queue(netdev
);
598 e1000_reset(adapter
);
599 e1000_clean_all_tx_rings(adapter
);
600 e1000_clean_all_rx_rings(adapter
);
604 e1000_reinit_locked(struct e1000_adapter
*adapter
)
606 WARN_ON(in_interrupt());
607 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
611 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
615 e1000_reset(struct e1000_adapter
*adapter
)
618 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
620 /* Repartition Pba for greater than 9k mtu
621 * To take effect CTRL.RST is required.
624 switch (adapter
->hw
.mac_type
) {
626 case e1000_82547_rev_2
:
631 case e1000_80003es2lan
:
645 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
646 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
647 pba
-= 8; /* allocate more FIFO for Tx */
650 if (adapter
->hw
.mac_type
== e1000_82547
) {
651 adapter
->tx_fifo_head
= 0;
652 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
653 adapter
->tx_fifo_size
=
654 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
655 atomic_set(&adapter
->tx_fifo_stall
, 0);
658 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
660 /* flow control settings */
661 /* Set the FC high water mark to 90% of the FIFO size.
662 * Required to clear last 3 LSB */
663 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
664 /* We can't use 90% on small FIFOs because the remainder
665 * would be less than 1 full frame. In this case, we size
666 * it to allow at least a full frame above the high water
668 if (pba
< E1000_PBA_16K
)
669 fc_high_water_mark
= (pba
* 1024) - 1600;
671 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
672 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
673 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
674 adapter
->hw
.fc_pause_time
= 0xFFFF;
676 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
677 adapter
->hw
.fc_send_xon
= 1;
678 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
680 /* Allow time for pending master requests to run */
681 e1000_reset_hw(&adapter
->hw
);
682 if (adapter
->hw
.mac_type
>= e1000_82544
)
683 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
685 if (e1000_init_hw(&adapter
->hw
))
686 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
687 e1000_update_mng_vlan(adapter
);
688 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
689 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
691 e1000_reset_adaptive(&adapter
->hw
);
692 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
694 if (!adapter
->smart_power_down
&&
695 (adapter
->hw
.mac_type
== e1000_82571
||
696 adapter
->hw
.mac_type
== e1000_82572
)) {
697 uint16_t phy_data
= 0;
698 /* speed up time to link by disabling smart power down, ignore
699 * the return value of this function because there is nothing
700 * different we would do if it failed */
701 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
703 phy_data
&= ~IGP02E1000_PM_SPD
;
704 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
708 if ((adapter
->en_mng_pt
) &&
709 (adapter
->hw
.mac_type
>= e1000_82540
) &&
710 (adapter
->hw
.mac_type
< e1000_82571
) &&
711 (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
712 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
713 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
714 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
719 * e1000_probe - Device Initialization Routine
720 * @pdev: PCI device information struct
721 * @ent: entry in e1000_pci_tbl
723 * Returns 0 on success, negative on failure
725 * e1000_probe initializes an adapter identified by a pci_dev structure.
726 * The OS initialization, configuring of the adapter private structure,
727 * and a hardware reset occur.
731 e1000_probe(struct pci_dev
*pdev
,
732 const struct pci_device_id
*ent
)
734 struct net_device
*netdev
;
735 struct e1000_adapter
*adapter
;
736 unsigned long mmio_start
, mmio_len
;
737 unsigned long flash_start
, flash_len
;
739 static int cards_found
= 0;
740 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
741 int i
, err
, pci_using_dac
;
742 uint16_t eeprom_data
= 0;
743 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
744 if ((err
= pci_enable_device(pdev
)))
747 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
748 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
751 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
752 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
753 E1000_ERR("No usable DMA configuration, aborting\n");
759 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
762 pci_set_master(pdev
);
765 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
767 goto err_alloc_etherdev
;
769 SET_MODULE_OWNER(netdev
);
770 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
772 pci_set_drvdata(pdev
, netdev
);
773 adapter
= netdev_priv(netdev
);
774 adapter
->netdev
= netdev
;
775 adapter
->pdev
= pdev
;
776 adapter
->hw
.back
= adapter
;
777 adapter
->msg_enable
= (1 << debug
) - 1;
779 mmio_start
= pci_resource_start(pdev
, BAR_0
);
780 mmio_len
= pci_resource_len(pdev
, BAR_0
);
783 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
784 if (!adapter
->hw
.hw_addr
)
787 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
788 if (pci_resource_len(pdev
, i
) == 0)
790 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
791 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
796 netdev
->open
= &e1000_open
;
797 netdev
->stop
= &e1000_close
;
798 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
799 netdev
->get_stats
= &e1000_get_stats
;
800 netdev
->set_multicast_list
= &e1000_set_multi
;
801 netdev
->set_mac_address
= &e1000_set_mac
;
802 netdev
->change_mtu
= &e1000_change_mtu
;
803 netdev
->do_ioctl
= &e1000_ioctl
;
804 e1000_set_ethtool_ops(netdev
);
805 netdev
->tx_timeout
= &e1000_tx_timeout
;
806 netdev
->watchdog_timeo
= 5 * HZ
;
807 #ifdef CONFIG_E1000_NAPI
808 netdev
->poll
= &e1000_clean
;
811 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
812 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
813 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
814 #ifdef CONFIG_NET_POLL_CONTROLLER
815 netdev
->poll_controller
= e1000_netpoll
;
817 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
819 netdev
->mem_start
= mmio_start
;
820 netdev
->mem_end
= mmio_start
+ mmio_len
;
821 netdev
->base_addr
= adapter
->hw
.io_base
;
823 adapter
->bd_number
= cards_found
;
825 /* setup the private structure */
827 if ((err
= e1000_sw_init(adapter
)))
831 /* Flash BAR mapping must happen after e1000_sw_init
832 * because it depends on mac_type */
833 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
834 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
835 flash_start
= pci_resource_start(pdev
, 1);
836 flash_len
= pci_resource_len(pdev
, 1);
837 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
838 if (!adapter
->hw
.flash_address
)
842 if (e1000_check_phy_reset_block(&adapter
->hw
))
843 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
845 if (adapter
->hw
.mac_type
>= e1000_82543
) {
846 netdev
->features
= NETIF_F_SG
|
850 NETIF_F_HW_VLAN_FILTER
;
851 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
852 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
856 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
857 (adapter
->hw
.mac_type
!= e1000_82547
))
858 netdev
->features
|= NETIF_F_TSO
;
861 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
862 netdev
->features
|= NETIF_F_TSO6
;
866 netdev
->features
|= NETIF_F_HIGHDMA
;
868 netdev
->features
|= NETIF_F_LLTX
;
870 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
872 /* initialize eeprom parameters */
874 if (e1000_init_eeprom_params(&adapter
->hw
)) {
875 E1000_ERR("EEPROM initialization failed\n");
879 /* before reading the EEPROM, reset the controller to
880 * put the device in a known good starting state */
882 e1000_reset_hw(&adapter
->hw
);
884 /* make sure the EEPROM is good */
886 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
887 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
891 /* copy the MAC address out of the EEPROM */
893 if (e1000_read_mac_addr(&adapter
->hw
))
894 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
895 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
896 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
898 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
899 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
903 e1000_get_bus_info(&adapter
->hw
);
905 init_timer(&adapter
->tx_fifo_stall_timer
);
906 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
907 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
909 init_timer(&adapter
->watchdog_timer
);
910 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
911 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
913 init_timer(&adapter
->phy_info_timer
);
914 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
915 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
917 INIT_WORK(&adapter
->reset_task
,
918 (void (*)(void *))e1000_reset_task
, netdev
);
920 e1000_check_options(adapter
);
922 /* Initial Wake on LAN setting
923 * If APM wake is enabled in the EEPROM,
924 * enable the ACPI Magic Packet filter
927 switch (adapter
->hw
.mac_type
) {
928 case e1000_82542_rev2_0
:
929 case e1000_82542_rev2_1
:
933 e1000_read_eeprom(&adapter
->hw
,
934 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
935 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
938 e1000_read_eeprom(&adapter
->hw
,
939 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
940 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
943 case e1000_82546_rev_3
:
945 case e1000_80003es2lan
:
946 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
947 e1000_read_eeprom(&adapter
->hw
,
948 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
953 e1000_read_eeprom(&adapter
->hw
,
954 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
957 if (eeprom_data
& eeprom_apme_mask
)
958 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
960 /* now that we have the eeprom settings, apply the special cases
961 * where the eeprom may be wrong or the board simply won't support
962 * wake on lan on a particular port */
963 switch (pdev
->device
) {
964 case E1000_DEV_ID_82546GB_PCIE
:
965 adapter
->eeprom_wol
= 0;
967 case E1000_DEV_ID_82546EB_FIBER
:
968 case E1000_DEV_ID_82546GB_FIBER
:
969 case E1000_DEV_ID_82571EB_FIBER
:
970 /* Wake events only supported on port A for dual fiber
971 * regardless of eeprom setting */
972 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
973 adapter
->eeprom_wol
= 0;
975 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
976 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
977 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
978 /* if quad port adapter, disable WoL on all but port A */
979 if (global_quad_port_a
!= 0)
980 adapter
->eeprom_wol
= 0;
982 adapter
->quad_port_a
= 1;
983 /* Reset for multiple quad port adapters */
984 if (++global_quad_port_a
== 4)
985 global_quad_port_a
= 0;
989 /* initialize the wol settings based on the eeprom settings */
990 adapter
->wol
= adapter
->eeprom_wol
;
992 /* print bus type/speed/width info */
994 struct e1000_hw
*hw
= &adapter
->hw
;
995 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
996 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
997 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
998 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
999 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1000 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1001 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1002 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1003 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1004 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1005 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1009 for (i
= 0; i
< 6; i
++)
1010 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1012 /* reset the hardware with the new settings */
1013 e1000_reset(adapter
);
1015 /* If the controller is 82573 and f/w is AMT, do not set
1016 * DRV_LOAD until the interface is up. For all other cases,
1017 * let the f/w know that the h/w is now under the control
1019 if (adapter
->hw
.mac_type
!= e1000_82573
||
1020 !e1000_check_mng_mode(&adapter
->hw
))
1021 e1000_get_hw_control(adapter
);
1023 strcpy(netdev
->name
, "eth%d");
1024 if ((err
= register_netdev(netdev
)))
1027 /* tell the stack to leave us alone until e1000_open() is called */
1028 netif_carrier_off(netdev
);
1029 netif_stop_queue(netdev
);
1031 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1037 e1000_release_hw_control(adapter
);
1039 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1040 e1000_phy_hw_reset(&adapter
->hw
);
1042 if (adapter
->hw
.flash_address
)
1043 iounmap(adapter
->hw
.flash_address
);
1045 #ifdef CONFIG_E1000_NAPI
1046 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1047 dev_put(&adapter
->polling_netdev
[i
]);
1050 kfree(adapter
->tx_ring
);
1051 kfree(adapter
->rx_ring
);
1052 #ifdef CONFIG_E1000_NAPI
1053 kfree(adapter
->polling_netdev
);
1056 iounmap(adapter
->hw
.hw_addr
);
1058 free_netdev(netdev
);
1060 pci_release_regions(pdev
);
1063 pci_disable_device(pdev
);
1068 * e1000_remove - Device Removal Routine
1069 * @pdev: PCI device information struct
1071 * e1000_remove is called by the PCI subsystem to alert the driver
1072 * that it should release a PCI device. The could be caused by a
1073 * Hot-Plug event, or because the driver is going to be removed from
1077 static void __devexit
1078 e1000_remove(struct pci_dev
*pdev
)
1080 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1081 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1083 #ifdef CONFIG_E1000_NAPI
1087 flush_scheduled_work();
1089 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1090 adapter
->hw
.mac_type
< e1000_82571
&&
1091 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1092 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1093 if (manc
& E1000_MANC_SMBUS_EN
) {
1094 manc
|= E1000_MANC_ARP_EN
;
1095 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1099 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1100 * would have already happened in close and is redundant. */
1101 e1000_release_hw_control(adapter
);
1103 unregister_netdev(netdev
);
1104 #ifdef CONFIG_E1000_NAPI
1105 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1106 dev_put(&adapter
->polling_netdev
[i
]);
1109 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1110 e1000_phy_hw_reset(&adapter
->hw
);
1112 kfree(adapter
->tx_ring
);
1113 kfree(adapter
->rx_ring
);
1114 #ifdef CONFIG_E1000_NAPI
1115 kfree(adapter
->polling_netdev
);
1118 iounmap(adapter
->hw
.hw_addr
);
1119 if (adapter
->hw
.flash_address
)
1120 iounmap(adapter
->hw
.flash_address
);
1121 pci_release_regions(pdev
);
1123 free_netdev(netdev
);
1125 pci_disable_device(pdev
);
1129 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1130 * @adapter: board private structure to initialize
1132 * e1000_sw_init initializes the Adapter private data structure.
1133 * Fields are initialized based on PCI device information and
1134 * OS network device settings (MTU size).
1137 static int __devinit
1138 e1000_sw_init(struct e1000_adapter
*adapter
)
1140 struct e1000_hw
*hw
= &adapter
->hw
;
1141 struct net_device
*netdev
= adapter
->netdev
;
1142 struct pci_dev
*pdev
= adapter
->pdev
;
1143 #ifdef CONFIG_E1000_NAPI
1147 /* PCI config space info */
1149 hw
->vendor_id
= pdev
->vendor
;
1150 hw
->device_id
= pdev
->device
;
1151 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1152 hw
->subsystem_id
= pdev
->subsystem_device
;
1154 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1156 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1158 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1159 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1160 hw
->max_frame_size
= netdev
->mtu
+
1161 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1162 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1164 /* identify the MAC */
1166 if (e1000_set_mac_type(hw
)) {
1167 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1171 switch (hw
->mac_type
) {
1176 case e1000_82541_rev_2
:
1177 case e1000_82547_rev_2
:
1178 hw
->phy_init_script
= 1;
1182 e1000_set_media_type(hw
);
1184 hw
->wait_autoneg_complete
= FALSE
;
1185 hw
->tbi_compatibility_en
= TRUE
;
1186 hw
->adaptive_ifs
= TRUE
;
1188 /* Copper options */
1190 if (hw
->media_type
== e1000_media_type_copper
) {
1191 hw
->mdix
= AUTO_ALL_MODES
;
1192 hw
->disable_polarity_correction
= FALSE
;
1193 hw
->master_slave
= E1000_MASTER_SLAVE
;
1196 adapter
->num_tx_queues
= 1;
1197 adapter
->num_rx_queues
= 1;
1199 if (e1000_alloc_queues(adapter
)) {
1200 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1204 #ifdef CONFIG_E1000_NAPI
1205 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1206 adapter
->polling_netdev
[i
].priv
= adapter
;
1207 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1208 adapter
->polling_netdev
[i
].weight
= 64;
1209 dev_hold(&adapter
->polling_netdev
[i
]);
1210 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1212 spin_lock_init(&adapter
->tx_queue_lock
);
1215 atomic_set(&adapter
->irq_sem
, 1);
1216 spin_lock_init(&adapter
->stats_lock
);
1218 set_bit(__E1000_DOWN
, &adapter
->flags
);
1224 * e1000_alloc_queues - Allocate memory for all rings
1225 * @adapter: board private structure to initialize
1227 * We allocate one ring per queue at run-time since we don't know the
1228 * number of queues at compile-time. The polling_netdev array is
1229 * intended for Multiqueue, but should work fine with a single queue.
1232 static int __devinit
1233 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1237 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1238 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1239 if (!adapter
->tx_ring
)
1241 memset(adapter
->tx_ring
, 0, size
);
1243 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1244 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1245 if (!adapter
->rx_ring
) {
1246 kfree(adapter
->tx_ring
);
1249 memset(adapter
->rx_ring
, 0, size
);
1251 #ifdef CONFIG_E1000_NAPI
1252 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1253 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1254 if (!adapter
->polling_netdev
) {
1255 kfree(adapter
->tx_ring
);
1256 kfree(adapter
->rx_ring
);
1259 memset(adapter
->polling_netdev
, 0, size
);
1262 return E1000_SUCCESS
;
1266 * e1000_open - Called when a network interface is made active
1267 * @netdev: network interface device structure
1269 * Returns 0 on success, negative value on failure
1271 * The open entry point is called when a network interface is made
1272 * active by the system (IFF_UP). At this point all resources needed
1273 * for transmit and receive operations are allocated, the interrupt
1274 * handler is registered with the OS, the watchdog timer is started,
1275 * and the stack is notified that the interface is ready.
1279 e1000_open(struct net_device
*netdev
)
1281 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1284 /* disallow open during test */
1285 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1288 /* allocate transmit descriptors */
1289 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1292 /* allocate receive descriptors */
1293 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1296 err
= e1000_request_irq(adapter
);
1300 e1000_power_up_phy(adapter
);
1302 if ((err
= e1000_up(adapter
)))
1304 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1305 if ((adapter
->hw
.mng_cookie
.status
&
1306 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1307 e1000_update_mng_vlan(adapter
);
1310 /* If AMT is enabled, let the firmware know that the network
1311 * interface is now open */
1312 if (adapter
->hw
.mac_type
== e1000_82573
&&
1313 e1000_check_mng_mode(&adapter
->hw
))
1314 e1000_get_hw_control(adapter
);
1316 return E1000_SUCCESS
;
1319 e1000_power_down_phy(adapter
);
1320 e1000_free_irq(adapter
);
1322 e1000_free_all_rx_resources(adapter
);
1324 e1000_free_all_tx_resources(adapter
);
1326 e1000_reset(adapter
);
1332 * e1000_close - Disables a network interface
1333 * @netdev: network interface device structure
1335 * Returns 0, this is not allowed to fail
1337 * The close entry point is called when an interface is de-activated
1338 * by the OS. The hardware is still under the drivers control, but
1339 * needs to be disabled. A global MAC reset is issued to stop the
1340 * hardware, and all transmit and receive resources are freed.
1344 e1000_close(struct net_device
*netdev
)
1346 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1348 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1349 e1000_down(adapter
);
1350 e1000_power_down_phy(adapter
);
1351 e1000_free_irq(adapter
);
1353 e1000_free_all_tx_resources(adapter
);
1354 e1000_free_all_rx_resources(adapter
);
1356 /* kill manageability vlan ID if supported, but not if a vlan with
1357 * the same ID is registered on the host OS (let 8021q kill it) */
1358 if ((adapter
->hw
.mng_cookie
.status
&
1359 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1361 adapter
->vlgrp
->vlan_devices
[adapter
->mng_vlan_id
])) {
1362 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1365 /* If AMT is enabled, let the firmware know that the network
1366 * interface is now closed */
1367 if (adapter
->hw
.mac_type
== e1000_82573
&&
1368 e1000_check_mng_mode(&adapter
->hw
))
1369 e1000_release_hw_control(adapter
);
1375 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1376 * @adapter: address of board private structure
1377 * @start: address of beginning of memory
1378 * @len: length of memory
1381 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1382 void *start
, unsigned long len
)
1384 unsigned long begin
= (unsigned long) start
;
1385 unsigned long end
= begin
+ len
;
1387 /* First rev 82545 and 82546 need to not allow any memory
1388 * write location to cross 64k boundary due to errata 23 */
1389 if (adapter
->hw
.mac_type
== e1000_82545
||
1390 adapter
->hw
.mac_type
== e1000_82546
) {
1391 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1398 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1399 * @adapter: board private structure
1400 * @txdr: tx descriptor ring (for a specific queue) to setup
1402 * Return 0 on success, negative on failure
1406 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1407 struct e1000_tx_ring
*txdr
)
1409 struct pci_dev
*pdev
= adapter
->pdev
;
1412 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1413 txdr
->buffer_info
= vmalloc(size
);
1414 if (!txdr
->buffer_info
) {
1416 "Unable to allocate memory for the transmit descriptor ring\n");
1419 memset(txdr
->buffer_info
, 0, size
);
1421 /* round up to nearest 4K */
1423 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1424 E1000_ROUNDUP(txdr
->size
, 4096);
1426 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1429 vfree(txdr
->buffer_info
);
1431 "Unable to allocate memory for the transmit descriptor ring\n");
1435 /* Fix for errata 23, can't cross 64kB boundary */
1436 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1437 void *olddesc
= txdr
->desc
;
1438 dma_addr_t olddma
= txdr
->dma
;
1439 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1440 "at %p\n", txdr
->size
, txdr
->desc
);
1441 /* Try again, without freeing the previous */
1442 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1443 /* Failed allocation, critical failure */
1445 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1446 goto setup_tx_desc_die
;
1449 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1451 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1453 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1455 "Unable to allocate aligned memory "
1456 "for the transmit descriptor ring\n");
1457 vfree(txdr
->buffer_info
);
1460 /* Free old allocation, new allocation was successful */
1461 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1464 memset(txdr
->desc
, 0, txdr
->size
);
1466 txdr
->next_to_use
= 0;
1467 txdr
->next_to_clean
= 0;
1468 spin_lock_init(&txdr
->tx_lock
);
1474 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1475 * (Descriptors) for all queues
1476 * @adapter: board private structure
1478 * Return 0 on success, negative on failure
1482 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1486 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1487 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1490 "Allocation for Tx Queue %u failed\n", i
);
1491 for (i
-- ; i
>= 0; i
--)
1492 e1000_free_tx_resources(adapter
,
1493 &adapter
->tx_ring
[i
]);
1502 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1503 * @adapter: board private structure
1505 * Configure the Tx unit of the MAC after a reset.
1509 e1000_configure_tx(struct e1000_adapter
*adapter
)
1512 struct e1000_hw
*hw
= &adapter
->hw
;
1513 uint32_t tdlen
, tctl
, tipg
, tarc
;
1514 uint32_t ipgr1
, ipgr2
;
1516 /* Setup the HW Tx Head and Tail descriptor pointers */
1518 switch (adapter
->num_tx_queues
) {
1521 tdba
= adapter
->tx_ring
[0].dma
;
1522 tdlen
= adapter
->tx_ring
[0].count
*
1523 sizeof(struct e1000_tx_desc
);
1524 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1525 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1526 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1527 E1000_WRITE_REG(hw
, TDT
, 0);
1528 E1000_WRITE_REG(hw
, TDH
, 0);
1529 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1530 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1534 /* Set the default values for the Tx Inter Packet Gap timer */
1536 if (hw
->media_type
== e1000_media_type_fiber
||
1537 hw
->media_type
== e1000_media_type_internal_serdes
)
1538 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1540 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1542 switch (hw
->mac_type
) {
1543 case e1000_82542_rev2_0
:
1544 case e1000_82542_rev2_1
:
1545 tipg
= DEFAULT_82542_TIPG_IPGT
;
1546 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1547 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1549 case e1000_80003es2lan
:
1550 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1551 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1554 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1555 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1558 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1559 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1560 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1562 /* Set the Tx Interrupt Delay register */
1564 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1565 if (hw
->mac_type
>= e1000_82540
)
1566 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1568 /* Program the Transmit Control Register */
1570 tctl
= E1000_READ_REG(hw
, TCTL
);
1571 tctl
&= ~E1000_TCTL_CT
;
1572 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1573 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1575 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1576 tarc
= E1000_READ_REG(hw
, TARC0
);
1577 /* set the speed mode bit, we'll clear it if we're not at
1578 * gigabit link later */
1580 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1581 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1582 tarc
= E1000_READ_REG(hw
, TARC0
);
1584 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1585 tarc
= E1000_READ_REG(hw
, TARC1
);
1587 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1590 e1000_config_collision_dist(hw
);
1592 /* Setup Transmit Descriptor Settings for eop descriptor */
1593 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1595 /* only set IDE if we are delaying interrupts using the timers */
1596 if (adapter
->tx_int_delay
)
1597 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1599 if (hw
->mac_type
< e1000_82543
)
1600 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1602 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1604 /* Cache if we're 82544 running in PCI-X because we'll
1605 * need this to apply a workaround later in the send path. */
1606 if (hw
->mac_type
== e1000_82544
&&
1607 hw
->bus_type
== e1000_bus_type_pcix
)
1608 adapter
->pcix_82544
= 1;
1610 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1615 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1616 * @adapter: board private structure
1617 * @rxdr: rx descriptor ring (for a specific queue) to setup
1619 * Returns 0 on success, negative on failure
1623 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1624 struct e1000_rx_ring
*rxdr
)
1626 struct pci_dev
*pdev
= adapter
->pdev
;
1629 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1630 rxdr
->buffer_info
= vmalloc(size
);
1631 if (!rxdr
->buffer_info
) {
1633 "Unable to allocate memory for the receive descriptor ring\n");
1636 memset(rxdr
->buffer_info
, 0, size
);
1638 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1639 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1640 if (!rxdr
->ps_page
) {
1641 vfree(rxdr
->buffer_info
);
1643 "Unable to allocate memory for the receive descriptor ring\n");
1646 memset(rxdr
->ps_page
, 0, size
);
1648 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1649 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1650 if (!rxdr
->ps_page_dma
) {
1651 vfree(rxdr
->buffer_info
);
1652 kfree(rxdr
->ps_page
);
1654 "Unable to allocate memory for the receive descriptor ring\n");
1657 memset(rxdr
->ps_page_dma
, 0, size
);
1659 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1660 desc_len
= sizeof(struct e1000_rx_desc
);
1662 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1664 /* Round up to nearest 4K */
1666 rxdr
->size
= rxdr
->count
* desc_len
;
1667 E1000_ROUNDUP(rxdr
->size
, 4096);
1669 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1673 "Unable to allocate memory for the receive descriptor ring\n");
1675 vfree(rxdr
->buffer_info
);
1676 kfree(rxdr
->ps_page
);
1677 kfree(rxdr
->ps_page_dma
);
1681 /* Fix for errata 23, can't cross 64kB boundary */
1682 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1683 void *olddesc
= rxdr
->desc
;
1684 dma_addr_t olddma
= rxdr
->dma
;
1685 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1686 "at %p\n", rxdr
->size
, rxdr
->desc
);
1687 /* Try again, without freeing the previous */
1688 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1689 /* Failed allocation, critical failure */
1691 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1693 "Unable to allocate memory "
1694 "for the receive descriptor ring\n");
1695 goto setup_rx_desc_die
;
1698 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1700 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1702 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1704 "Unable to allocate aligned memory "
1705 "for the receive descriptor ring\n");
1706 goto setup_rx_desc_die
;
1708 /* Free old allocation, new allocation was successful */
1709 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1712 memset(rxdr
->desc
, 0, rxdr
->size
);
1714 rxdr
->next_to_clean
= 0;
1715 rxdr
->next_to_use
= 0;
1721 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1722 * (Descriptors) for all queues
1723 * @adapter: board private structure
1725 * Return 0 on success, negative on failure
1729 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1733 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1734 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1737 "Allocation for Rx Queue %u failed\n", i
);
1738 for (i
-- ; i
>= 0; i
--)
1739 e1000_free_rx_resources(adapter
,
1740 &adapter
->rx_ring
[i
]);
1749 * e1000_setup_rctl - configure the receive control registers
1750 * @adapter: Board private structure
1752 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1753 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1755 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1757 uint32_t rctl
, rfctl
;
1758 uint32_t psrctl
= 0;
1759 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1763 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1765 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1767 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1768 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1769 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1771 if (adapter
->hw
.tbi_compatibility_on
== 1)
1772 rctl
|= E1000_RCTL_SBP
;
1774 rctl
&= ~E1000_RCTL_SBP
;
1776 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1777 rctl
&= ~E1000_RCTL_LPE
;
1779 rctl
|= E1000_RCTL_LPE
;
1781 /* Setup buffer sizes */
1782 rctl
&= ~E1000_RCTL_SZ_4096
;
1783 rctl
|= E1000_RCTL_BSEX
;
1784 switch (adapter
->rx_buffer_len
) {
1785 case E1000_RXBUFFER_256
:
1786 rctl
|= E1000_RCTL_SZ_256
;
1787 rctl
&= ~E1000_RCTL_BSEX
;
1789 case E1000_RXBUFFER_512
:
1790 rctl
|= E1000_RCTL_SZ_512
;
1791 rctl
&= ~E1000_RCTL_BSEX
;
1793 case E1000_RXBUFFER_1024
:
1794 rctl
|= E1000_RCTL_SZ_1024
;
1795 rctl
&= ~E1000_RCTL_BSEX
;
1797 case E1000_RXBUFFER_2048
:
1799 rctl
|= E1000_RCTL_SZ_2048
;
1800 rctl
&= ~E1000_RCTL_BSEX
;
1802 case E1000_RXBUFFER_4096
:
1803 rctl
|= E1000_RCTL_SZ_4096
;
1805 case E1000_RXBUFFER_8192
:
1806 rctl
|= E1000_RCTL_SZ_8192
;
1808 case E1000_RXBUFFER_16384
:
1809 rctl
|= E1000_RCTL_SZ_16384
;
1813 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1814 /* 82571 and greater support packet-split where the protocol
1815 * header is placed in skb->data and the packet data is
1816 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1817 * In the case of a non-split, skb->data is linearly filled,
1818 * followed by the page buffers. Therefore, skb->data is
1819 * sized to hold the largest protocol header.
1821 /* allocations using alloc_page take too long for regular MTU
1822 * so only enable packet split for jumbo frames */
1823 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1824 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1825 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1826 adapter
->rx_ps_pages
= pages
;
1828 adapter
->rx_ps_pages
= 0;
1830 if (adapter
->rx_ps_pages
) {
1831 /* Configure extra packet-split registers */
1832 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1833 rfctl
|= E1000_RFCTL_EXTEN
;
1834 /* disable packet split support for IPv6 extension headers,
1835 * because some malformed IPv6 headers can hang the RX */
1836 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
1837 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
1839 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1841 rctl
|= E1000_RCTL_DTYP_PS
;
1843 psrctl
|= adapter
->rx_ps_bsize0
>>
1844 E1000_PSRCTL_BSIZE0_SHIFT
;
1846 switch (adapter
->rx_ps_pages
) {
1848 psrctl
|= PAGE_SIZE
<<
1849 E1000_PSRCTL_BSIZE3_SHIFT
;
1851 psrctl
|= PAGE_SIZE
<<
1852 E1000_PSRCTL_BSIZE2_SHIFT
;
1854 psrctl
|= PAGE_SIZE
>>
1855 E1000_PSRCTL_BSIZE1_SHIFT
;
1859 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1862 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1866 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1867 * @adapter: board private structure
1869 * Configure the Rx unit of the MAC after a reset.
1873 e1000_configure_rx(struct e1000_adapter
*adapter
)
1876 struct e1000_hw
*hw
= &adapter
->hw
;
1877 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1879 if (adapter
->rx_ps_pages
) {
1880 /* this is a 32 byte descriptor */
1881 rdlen
= adapter
->rx_ring
[0].count
*
1882 sizeof(union e1000_rx_desc_packet_split
);
1883 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1884 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1886 rdlen
= adapter
->rx_ring
[0].count
*
1887 sizeof(struct e1000_rx_desc
);
1888 adapter
->clean_rx
= e1000_clean_rx_irq
;
1889 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1892 /* disable receives while setting up the descriptors */
1893 rctl
= E1000_READ_REG(hw
, RCTL
);
1894 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1896 /* set the Receive Delay Timer Register */
1897 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1899 if (hw
->mac_type
>= e1000_82540
) {
1900 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1901 if (adapter
->itr_setting
!= 0)
1902 E1000_WRITE_REG(hw
, ITR
,
1903 1000000000 / (adapter
->itr
* 256));
1906 if (hw
->mac_type
>= e1000_82571
) {
1907 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1908 /* Reset delay timers after every interrupt */
1909 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1910 #ifdef CONFIG_E1000_NAPI
1911 /* Auto-Mask interrupts upon ICR access */
1912 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1913 E1000_WRITE_REG(hw
, IAM
, 0xffffffff);
1915 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1916 E1000_WRITE_FLUSH(hw
);
1919 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1920 * the Base and Length of the Rx Descriptor Ring */
1921 switch (adapter
->num_rx_queues
) {
1924 rdba
= adapter
->rx_ring
[0].dma
;
1925 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1926 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1927 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1928 E1000_WRITE_REG(hw
, RDT
, 0);
1929 E1000_WRITE_REG(hw
, RDH
, 0);
1930 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1931 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1935 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1936 if (hw
->mac_type
>= e1000_82543
) {
1937 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1938 if (adapter
->rx_csum
== TRUE
) {
1939 rxcsum
|= E1000_RXCSUM_TUOFL
;
1941 /* Enable 82571 IPv4 payload checksum for UDP fragments
1942 * Must be used in conjunction with packet-split. */
1943 if ((hw
->mac_type
>= e1000_82571
) &&
1944 (adapter
->rx_ps_pages
)) {
1945 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1948 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1949 /* don't need to clear IPPCSE as it defaults to 0 */
1951 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1954 /* enable early receives on 82573, only takes effect if using > 2048
1955 * byte total frame size. for example only for jumbo frames */
1956 #define E1000_ERT_2048 0x100
1957 if (hw
->mac_type
== e1000_82573
)
1958 E1000_WRITE_REG(hw
, ERT
, E1000_ERT_2048
);
1960 /* Enable Receives */
1961 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1965 * e1000_free_tx_resources - Free Tx Resources per Queue
1966 * @adapter: board private structure
1967 * @tx_ring: Tx descriptor ring for a specific queue
1969 * Free all transmit software resources
1973 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1974 struct e1000_tx_ring
*tx_ring
)
1976 struct pci_dev
*pdev
= adapter
->pdev
;
1978 e1000_clean_tx_ring(adapter
, tx_ring
);
1980 vfree(tx_ring
->buffer_info
);
1981 tx_ring
->buffer_info
= NULL
;
1983 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1985 tx_ring
->desc
= NULL
;
1989 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1990 * @adapter: board private structure
1992 * Free all transmit software resources
1996 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2000 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2001 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2005 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2006 struct e1000_buffer
*buffer_info
)
2008 if (buffer_info
->dma
) {
2009 pci_unmap_page(adapter
->pdev
,
2011 buffer_info
->length
,
2013 buffer_info
->dma
= 0;
2015 if (buffer_info
->skb
) {
2016 dev_kfree_skb_any(buffer_info
->skb
);
2017 buffer_info
->skb
= NULL
;
2019 /* buffer_info must be completely set up in the transmit path */
2023 * e1000_clean_tx_ring - Free Tx Buffers
2024 * @adapter: board private structure
2025 * @tx_ring: ring to be cleaned
2029 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2030 struct e1000_tx_ring
*tx_ring
)
2032 struct e1000_buffer
*buffer_info
;
2036 /* Free all the Tx ring sk_buffs */
2038 for (i
= 0; i
< tx_ring
->count
; i
++) {
2039 buffer_info
= &tx_ring
->buffer_info
[i
];
2040 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2043 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2044 memset(tx_ring
->buffer_info
, 0, size
);
2046 /* Zero out the descriptor ring */
2048 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2050 tx_ring
->next_to_use
= 0;
2051 tx_ring
->next_to_clean
= 0;
2052 tx_ring
->last_tx_tso
= 0;
2054 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2055 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2059 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2060 * @adapter: board private structure
2064 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2068 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2069 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2073 * e1000_free_rx_resources - Free Rx Resources
2074 * @adapter: board private structure
2075 * @rx_ring: ring to clean the resources from
2077 * Free all receive software resources
2081 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2082 struct e1000_rx_ring
*rx_ring
)
2084 struct pci_dev
*pdev
= adapter
->pdev
;
2086 e1000_clean_rx_ring(adapter
, rx_ring
);
2088 vfree(rx_ring
->buffer_info
);
2089 rx_ring
->buffer_info
= NULL
;
2090 kfree(rx_ring
->ps_page
);
2091 rx_ring
->ps_page
= NULL
;
2092 kfree(rx_ring
->ps_page_dma
);
2093 rx_ring
->ps_page_dma
= NULL
;
2095 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2097 rx_ring
->desc
= NULL
;
2101 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2102 * @adapter: board private structure
2104 * Free all receive software resources
2108 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2112 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2113 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2117 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2118 * @adapter: board private structure
2119 * @rx_ring: ring to free buffers from
2123 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2124 struct e1000_rx_ring
*rx_ring
)
2126 struct e1000_buffer
*buffer_info
;
2127 struct e1000_ps_page
*ps_page
;
2128 struct e1000_ps_page_dma
*ps_page_dma
;
2129 struct pci_dev
*pdev
= adapter
->pdev
;
2133 /* Free all the Rx ring sk_buffs */
2134 for (i
= 0; i
< rx_ring
->count
; i
++) {
2135 buffer_info
= &rx_ring
->buffer_info
[i
];
2136 if (buffer_info
->skb
) {
2137 pci_unmap_single(pdev
,
2139 buffer_info
->length
,
2140 PCI_DMA_FROMDEVICE
);
2142 dev_kfree_skb(buffer_info
->skb
);
2143 buffer_info
->skb
= NULL
;
2145 ps_page
= &rx_ring
->ps_page
[i
];
2146 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2147 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2148 if (!ps_page
->ps_page
[j
]) break;
2149 pci_unmap_page(pdev
,
2150 ps_page_dma
->ps_page_dma
[j
],
2151 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2152 ps_page_dma
->ps_page_dma
[j
] = 0;
2153 put_page(ps_page
->ps_page
[j
]);
2154 ps_page
->ps_page
[j
] = NULL
;
2158 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2159 memset(rx_ring
->buffer_info
, 0, size
);
2160 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2161 memset(rx_ring
->ps_page
, 0, size
);
2162 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2163 memset(rx_ring
->ps_page_dma
, 0, size
);
2165 /* Zero out the descriptor ring */
2167 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2169 rx_ring
->next_to_clean
= 0;
2170 rx_ring
->next_to_use
= 0;
2172 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2173 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2177 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2178 * @adapter: board private structure
2182 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2186 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2187 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2190 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2191 * and memory write and invalidate disabled for certain operations
2194 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2196 struct net_device
*netdev
= adapter
->netdev
;
2199 e1000_pci_clear_mwi(&adapter
->hw
);
2201 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2202 rctl
|= E1000_RCTL_RST
;
2203 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2204 E1000_WRITE_FLUSH(&adapter
->hw
);
2207 if (netif_running(netdev
))
2208 e1000_clean_all_rx_rings(adapter
);
2212 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2214 struct net_device
*netdev
= adapter
->netdev
;
2217 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2218 rctl
&= ~E1000_RCTL_RST
;
2219 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2220 E1000_WRITE_FLUSH(&adapter
->hw
);
2223 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2224 e1000_pci_set_mwi(&adapter
->hw
);
2226 if (netif_running(netdev
)) {
2227 /* No need to loop, because 82542 supports only 1 queue */
2228 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2229 e1000_configure_rx(adapter
);
2230 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2235 * e1000_set_mac - Change the Ethernet Address of the NIC
2236 * @netdev: network interface device structure
2237 * @p: pointer to an address structure
2239 * Returns 0 on success, negative on failure
2243 e1000_set_mac(struct net_device
*netdev
, void *p
)
2245 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2246 struct sockaddr
*addr
= p
;
2248 if (!is_valid_ether_addr(addr
->sa_data
))
2249 return -EADDRNOTAVAIL
;
2251 /* 82542 2.0 needs to be in reset to write receive address registers */
2253 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2254 e1000_enter_82542_rst(adapter
);
2256 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2257 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2259 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2261 /* With 82571 controllers, LAA may be overwritten (with the default)
2262 * due to controller reset from the other port. */
2263 if (adapter
->hw
.mac_type
== e1000_82571
) {
2264 /* activate the work around */
2265 adapter
->hw
.laa_is_present
= 1;
2267 /* Hold a copy of the LAA in RAR[14] This is done so that
2268 * between the time RAR[0] gets clobbered and the time it
2269 * gets fixed (in e1000_watchdog), the actual LAA is in one
2270 * of the RARs and no incoming packets directed to this port
2271 * are dropped. Eventaully the LAA will be in RAR[0] and
2273 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2274 E1000_RAR_ENTRIES
- 1);
2277 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2278 e1000_leave_82542_rst(adapter
);
2284 * e1000_set_multi - Multicast and Promiscuous mode set
2285 * @netdev: network interface device structure
2287 * The set_multi entry point is called whenever the multicast address
2288 * list or the network interface flags are updated. This routine is
2289 * responsible for configuring the hardware for proper multicast,
2290 * promiscuous mode, and all-multi behavior.
2294 e1000_set_multi(struct net_device
*netdev
)
2296 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2297 struct e1000_hw
*hw
= &adapter
->hw
;
2298 struct dev_mc_list
*mc_ptr
;
2300 uint32_t hash_value
;
2301 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2302 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2303 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2304 E1000_NUM_MTA_REGISTERS
;
2306 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2307 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2309 /* reserve RAR[14] for LAA over-write work-around */
2310 if (adapter
->hw
.mac_type
== e1000_82571
)
2313 /* Check for Promiscuous and All Multicast modes */
2315 rctl
= E1000_READ_REG(hw
, RCTL
);
2317 if (netdev
->flags
& IFF_PROMISC
) {
2318 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2319 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2320 rctl
|= E1000_RCTL_MPE
;
2321 rctl
&= ~E1000_RCTL_UPE
;
2323 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2326 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2328 /* 82542 2.0 needs to be in reset to write receive address registers */
2330 if (hw
->mac_type
== e1000_82542_rev2_0
)
2331 e1000_enter_82542_rst(adapter
);
2333 /* load the first 14 multicast address into the exact filters 1-14
2334 * RAR 0 is used for the station MAC adddress
2335 * if there are not 14 addresses, go ahead and clear the filters
2336 * -- with 82571 controllers only 0-13 entries are filled here
2338 mc_ptr
= netdev
->mc_list
;
2340 for (i
= 1; i
< rar_entries
; i
++) {
2342 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2343 mc_ptr
= mc_ptr
->next
;
2345 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2346 E1000_WRITE_FLUSH(hw
);
2347 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2348 E1000_WRITE_FLUSH(hw
);
2352 /* clear the old settings from the multicast hash table */
2354 for (i
= 0; i
< mta_reg_count
; i
++) {
2355 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2356 E1000_WRITE_FLUSH(hw
);
2359 /* load any remaining addresses into the hash table */
2361 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2362 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2363 e1000_mta_set(hw
, hash_value
);
2366 if (hw
->mac_type
== e1000_82542_rev2_0
)
2367 e1000_leave_82542_rst(adapter
);
2370 /* Need to wait a few seconds after link up to get diagnostic information from
2374 e1000_update_phy_info(unsigned long data
)
2376 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2377 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2381 * e1000_82547_tx_fifo_stall - Timer Call-back
2382 * @data: pointer to adapter cast into an unsigned long
2386 e1000_82547_tx_fifo_stall(unsigned long data
)
2388 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2389 struct net_device
*netdev
= adapter
->netdev
;
2392 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2393 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2394 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2395 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2396 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2397 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2398 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2399 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2400 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2401 tctl
& ~E1000_TCTL_EN
);
2402 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2403 adapter
->tx_head_addr
);
2404 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2405 adapter
->tx_head_addr
);
2406 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2407 adapter
->tx_head_addr
);
2408 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2409 adapter
->tx_head_addr
);
2410 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2411 E1000_WRITE_FLUSH(&adapter
->hw
);
2413 adapter
->tx_fifo_head
= 0;
2414 atomic_set(&adapter
->tx_fifo_stall
, 0);
2415 netif_wake_queue(netdev
);
2417 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2423 * e1000_watchdog - Timer Call-back
2424 * @data: pointer to adapter cast into an unsigned long
2427 e1000_watchdog(unsigned long data
)
2429 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2430 struct net_device
*netdev
= adapter
->netdev
;
2431 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2432 uint32_t link
, tctl
;
2435 ret_val
= e1000_check_for_link(&adapter
->hw
);
2436 if ((ret_val
== E1000_ERR_PHY
) &&
2437 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2438 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2439 /* See e1000_kumeran_lock_loss_workaround() */
2441 "Gigabit has been disabled, downgrading speed\n");
2444 if (adapter
->hw
.mac_type
== e1000_82573
) {
2445 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2446 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2447 e1000_update_mng_vlan(adapter
);
2450 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2451 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2452 link
= !adapter
->hw
.serdes_link_down
;
2454 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2457 if (!netif_carrier_ok(netdev
)) {
2458 boolean_t txb2b
= 1;
2459 e1000_get_speed_and_duplex(&adapter
->hw
,
2460 &adapter
->link_speed
,
2461 &adapter
->link_duplex
);
2463 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2464 adapter
->link_speed
,
2465 adapter
->link_duplex
== FULL_DUPLEX
?
2466 "Full Duplex" : "Half Duplex");
2468 /* tweak tx_queue_len according to speed/duplex
2469 * and adjust the timeout factor */
2470 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2471 adapter
->tx_timeout_factor
= 1;
2472 switch (adapter
->link_speed
) {
2475 netdev
->tx_queue_len
= 10;
2476 adapter
->tx_timeout_factor
= 8;
2480 netdev
->tx_queue_len
= 100;
2481 /* maybe add some timeout factor ? */
2485 if ((adapter
->hw
.mac_type
== e1000_82571
||
2486 adapter
->hw
.mac_type
== e1000_82572
) &&
2489 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2490 tarc0
&= ~(1 << 21);
2491 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2495 /* disable TSO for pcie and 10/100 speeds, to avoid
2496 * some hardware issues */
2497 if (!adapter
->tso_force
&&
2498 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2499 switch (adapter
->link_speed
) {
2503 "10/100 speed: disabling TSO\n");
2504 netdev
->features
&= ~NETIF_F_TSO
;
2506 netdev
->features
&= ~NETIF_F_TSO6
;
2510 netdev
->features
|= NETIF_F_TSO
;
2512 netdev
->features
|= NETIF_F_TSO6
;
2522 /* enable transmits in the hardware, need to do this
2523 * after setting TARC0 */
2524 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2525 tctl
|= E1000_TCTL_EN
;
2526 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2528 netif_carrier_on(netdev
);
2529 netif_wake_queue(netdev
);
2530 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2531 adapter
->smartspeed
= 0;
2534 if (netif_carrier_ok(netdev
)) {
2535 adapter
->link_speed
= 0;
2536 adapter
->link_duplex
= 0;
2537 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2538 netif_carrier_off(netdev
);
2539 netif_stop_queue(netdev
);
2540 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2542 /* 80003ES2LAN workaround--
2543 * For packet buffer work-around on link down event;
2544 * disable receives in the ISR and
2545 * reset device here in the watchdog
2547 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2549 schedule_work(&adapter
->reset_task
);
2552 e1000_smartspeed(adapter
);
2555 e1000_update_stats(adapter
);
2557 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2558 adapter
->tpt_old
= adapter
->stats
.tpt
;
2559 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2560 adapter
->colc_old
= adapter
->stats
.colc
;
2562 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2563 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2564 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2565 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2567 e1000_update_adaptive(&adapter
->hw
);
2569 if (!netif_carrier_ok(netdev
)) {
2570 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2571 /* We've lost link, so the controller stops DMA,
2572 * but we've got queued Tx work that's never going
2573 * to get done, so reset controller to flush Tx.
2574 * (Do the reset outside of interrupt context). */
2575 adapter
->tx_timeout_count
++;
2576 schedule_work(&adapter
->reset_task
);
2580 /* Cause software interrupt to ensure rx ring is cleaned */
2581 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2583 /* Force detection of hung controller every watchdog period */
2584 adapter
->detect_tx_hung
= TRUE
;
2586 /* With 82571 controllers, LAA may be overwritten due to controller
2587 * reset from the other port. Set the appropriate LAA in RAR[0] */
2588 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2589 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2591 /* Reset the timer */
2592 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2595 enum latency_range
{
2599 latency_invalid
= 255
2603 * e1000_update_itr - update the dynamic ITR value based on statistics
2604 * Stores a new ITR value based on packets and byte
2605 * counts during the last interrupt. The advantage of per interrupt
2606 * computation is faster updates and more accurate ITR for the current
2607 * traffic pattern. Constants in this function were computed
2608 * based on theoretical maximum wire speed and thresholds were set based
2609 * on testing data as well as attempting to minimize response time
2610 * while increasing bulk throughput.
2611 * this functionality is controlled by the InterruptThrottleRate module
2612 * parameter (see e1000_param.c)
2613 * @adapter: pointer to adapter
2614 * @itr_setting: current adapter->itr
2615 * @packets: the number of packets during this measurement interval
2616 * @bytes: the number of bytes during this measurement interval
2618 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2619 uint16_t itr_setting
,
2623 unsigned int retval
= itr_setting
;
2624 struct e1000_hw
*hw
= &adapter
->hw
;
2626 if (unlikely(hw
->mac_type
< e1000_82540
))
2627 goto update_itr_done
;
2630 goto update_itr_done
;
2633 switch (itr_setting
) {
2634 case lowest_latency
:
2635 if ((packets
< 5) && (bytes
> 512))
2636 retval
= low_latency
;
2638 case low_latency
: /* 50 usec aka 20000 ints/s */
2639 if (bytes
> 10000) {
2640 if ((packets
< 10) ||
2641 ((bytes
/packets
) > 1200))
2642 retval
= bulk_latency
;
2643 else if ((packets
> 35))
2644 retval
= lowest_latency
;
2645 } else if (packets
<= 2 && bytes
< 512)
2646 retval
= lowest_latency
;
2648 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2649 if (bytes
> 25000) {
2651 retval
= low_latency
;
2654 retval
= low_latency
;
2663 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2665 struct e1000_hw
*hw
= &adapter
->hw
;
2666 uint16_t current_itr
;
2667 uint32_t new_itr
= adapter
->itr
;
2669 if (unlikely(hw
->mac_type
< e1000_82540
))
2672 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2673 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2679 adapter
->tx_itr
= e1000_update_itr(adapter
,
2681 adapter
->total_tx_packets
,
2682 adapter
->total_tx_bytes
);
2683 adapter
->rx_itr
= e1000_update_itr(adapter
,
2685 adapter
->total_rx_packets
,
2686 adapter
->total_rx_bytes
);
2688 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2690 /* conservative mode eliminates the lowest_latency setting */
2691 if (current_itr
== lowest_latency
&& (adapter
->itr_setting
== 3))
2692 current_itr
= low_latency
;
2694 switch (current_itr
) {
2695 /* counts and packets in update_itr are dependent on these numbers */
2696 case lowest_latency
:
2700 new_itr
= 20000; /* aka hwitr = ~200 */
2710 if (new_itr
!= adapter
->itr
) {
2711 /* this attempts to bias the interrupt rate towards Bulk
2712 * by adding intermediate steps when interrupt rate is
2714 new_itr
= new_itr
> adapter
->itr
?
2715 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2717 adapter
->itr
= new_itr
;
2718 E1000_WRITE_REG(hw
, ITR
, 1000000000 / (new_itr
* 256));
2724 #define E1000_TX_FLAGS_CSUM 0x00000001
2725 #define E1000_TX_FLAGS_VLAN 0x00000002
2726 #define E1000_TX_FLAGS_TSO 0x00000004
2727 #define E1000_TX_FLAGS_IPV4 0x00000008
2728 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2729 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2732 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2733 struct sk_buff
*skb
)
2736 struct e1000_context_desc
*context_desc
;
2737 struct e1000_buffer
*buffer_info
;
2739 uint32_t cmd_length
= 0;
2740 uint16_t ipcse
= 0, tucse
, mss
;
2741 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2744 if (skb_is_gso(skb
)) {
2745 if (skb_header_cloned(skb
)) {
2746 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2751 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2752 mss
= skb_shinfo(skb
)->gso_size
;
2753 if (skb
->protocol
== htons(ETH_P_IP
)) {
2754 skb
->nh
.iph
->tot_len
= 0;
2755 skb
->nh
.iph
->check
= 0;
2757 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2762 cmd_length
= E1000_TXD_CMD_IP
;
2763 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2765 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2766 skb
->nh
.ipv6h
->payload_len
= 0;
2768 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2769 &skb
->nh
.ipv6h
->daddr
,
2776 ipcss
= skb
->nh
.raw
- skb
->data
;
2777 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2778 tucss
= skb
->h
.raw
- skb
->data
;
2779 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2782 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2783 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2785 i
= tx_ring
->next_to_use
;
2786 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2787 buffer_info
= &tx_ring
->buffer_info
[i
];
2789 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2790 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2791 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2792 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2793 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2794 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2795 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2796 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2797 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2799 buffer_info
->time_stamp
= jiffies
;
2800 buffer_info
->next_to_watch
= i
;
2802 if (++i
== tx_ring
->count
) i
= 0;
2803 tx_ring
->next_to_use
= i
;
2813 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2814 struct sk_buff
*skb
)
2816 struct e1000_context_desc
*context_desc
;
2817 struct e1000_buffer
*buffer_info
;
2821 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2822 css
= skb
->h
.raw
- skb
->data
;
2824 i
= tx_ring
->next_to_use
;
2825 buffer_info
= &tx_ring
->buffer_info
[i
];
2826 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2828 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2829 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum_offset
;
2830 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2831 context_desc
->tcp_seg_setup
.data
= 0;
2832 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2834 buffer_info
->time_stamp
= jiffies
;
2835 buffer_info
->next_to_watch
= i
;
2837 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2838 tx_ring
->next_to_use
= i
;
2846 #define E1000_MAX_TXD_PWR 12
2847 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2850 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2851 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2852 unsigned int nr_frags
, unsigned int mss
)
2854 struct e1000_buffer
*buffer_info
;
2855 unsigned int len
= skb
->len
;
2856 unsigned int offset
= 0, size
, count
= 0, i
;
2858 len
-= skb
->data_len
;
2860 i
= tx_ring
->next_to_use
;
2863 buffer_info
= &tx_ring
->buffer_info
[i
];
2864 size
= min(len
, max_per_txd
);
2866 /* Workaround for Controller erratum --
2867 * descriptor for non-tso packet in a linear SKB that follows a
2868 * tso gets written back prematurely before the data is fully
2869 * DMA'd to the controller */
2870 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2872 tx_ring
->last_tx_tso
= 0;
2876 /* Workaround for premature desc write-backs
2877 * in TSO mode. Append 4-byte sentinel desc */
2878 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2881 /* work-around for errata 10 and it applies
2882 * to all controllers in PCI-X mode
2883 * The fix is to make sure that the first descriptor of a
2884 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2886 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2887 (size
> 2015) && count
== 0))
2890 /* Workaround for potential 82544 hang in PCI-X. Avoid
2891 * terminating buffers within evenly-aligned dwords. */
2892 if (unlikely(adapter
->pcix_82544
&&
2893 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2897 buffer_info
->length
= size
;
2899 pci_map_single(adapter
->pdev
,
2903 buffer_info
->time_stamp
= jiffies
;
2904 buffer_info
->next_to_watch
= i
;
2909 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2912 for (f
= 0; f
< nr_frags
; f
++) {
2913 struct skb_frag_struct
*frag
;
2915 frag
= &skb_shinfo(skb
)->frags
[f
];
2917 offset
= frag
->page_offset
;
2920 buffer_info
= &tx_ring
->buffer_info
[i
];
2921 size
= min(len
, max_per_txd
);
2923 /* Workaround for premature desc write-backs
2924 * in TSO mode. Append 4-byte sentinel desc */
2925 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2928 /* Workaround for potential 82544 hang in PCI-X.
2929 * Avoid terminating buffers within evenly-aligned
2931 if (unlikely(adapter
->pcix_82544
&&
2932 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2936 buffer_info
->length
= size
;
2938 pci_map_page(adapter
->pdev
,
2943 buffer_info
->time_stamp
= jiffies
;
2944 buffer_info
->next_to_watch
= i
;
2949 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2953 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2954 tx_ring
->buffer_info
[i
].skb
= skb
;
2955 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2961 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2962 int tx_flags
, int count
)
2964 struct e1000_tx_desc
*tx_desc
= NULL
;
2965 struct e1000_buffer
*buffer_info
;
2966 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2969 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2970 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2972 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2974 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2975 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2978 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2979 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2980 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2983 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2984 txd_lower
|= E1000_TXD_CMD_VLE
;
2985 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2988 i
= tx_ring
->next_to_use
;
2991 buffer_info
= &tx_ring
->buffer_info
[i
];
2992 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2993 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2994 tx_desc
->lower
.data
=
2995 cpu_to_le32(txd_lower
| buffer_info
->length
);
2996 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2997 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3000 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3002 /* Force memory writes to complete before letting h/w
3003 * know there are new descriptors to fetch. (Only
3004 * applicable for weak-ordered memory model archs,
3005 * such as IA-64). */
3008 tx_ring
->next_to_use
= i
;
3009 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
3010 /* we need this if more than one processor can write to our tail
3011 * at a time, it syncronizes IO on IA64/Altix systems */
3016 * 82547 workaround to avoid controller hang in half-duplex environment.
3017 * The workaround is to avoid queuing a large packet that would span
3018 * the internal Tx FIFO ring boundary by notifying the stack to resend
3019 * the packet at a later time. This gives the Tx FIFO an opportunity to
3020 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3021 * to the beginning of the Tx FIFO.
3024 #define E1000_FIFO_HDR 0x10
3025 #define E1000_82547_PAD_LEN 0x3E0
3028 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3030 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3031 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3033 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
3035 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3036 goto no_fifo_stall_required
;
3038 if (atomic_read(&adapter
->tx_fifo_stall
))
3041 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3042 atomic_set(&adapter
->tx_fifo_stall
, 1);
3046 no_fifo_stall_required
:
3047 adapter
->tx_fifo_head
+= skb_fifo_len
;
3048 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3049 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3053 #define MINIMUM_DHCP_PACKET_SIZE 282
3055 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3057 struct e1000_hw
*hw
= &adapter
->hw
;
3058 uint16_t length
, offset
;
3059 if (vlan_tx_tag_present(skb
)) {
3060 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
3061 ( adapter
->hw
.mng_cookie
.status
&
3062 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3065 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3066 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
3067 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3068 const struct iphdr
*ip
=
3069 (struct iphdr
*)((uint8_t *)skb
->data
+14);
3070 if (IPPROTO_UDP
== ip
->protocol
) {
3071 struct udphdr
*udp
=
3072 (struct udphdr
*)((uint8_t *)ip
+
3074 if (ntohs(udp
->dest
) == 67) {
3075 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
3076 length
= skb
->len
- offset
;
3078 return e1000_mng_write_dhcp_info(hw
,
3088 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3090 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3091 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3093 netif_stop_queue(netdev
);
3094 /* Herbert's original patch had:
3095 * smp_mb__after_netif_stop_queue();
3096 * but since that doesn't exist yet, just open code it. */
3099 /* We need to check again in a case another CPU has just
3100 * made room available. */
3101 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3105 netif_start_queue(netdev
);
3106 ++adapter
->restart_queue
;
3110 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3111 struct e1000_tx_ring
*tx_ring
, int size
)
3113 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3115 return __e1000_maybe_stop_tx(netdev
, size
);
3118 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3120 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3122 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3123 struct e1000_tx_ring
*tx_ring
;
3124 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3125 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3126 unsigned int tx_flags
= 0;
3127 unsigned int len
= skb
->len
;
3128 unsigned long flags
;
3129 unsigned int nr_frags
= 0;
3130 unsigned int mss
= 0;
3134 len
-= skb
->data_len
;
3136 /* This goes back to the question of how to logically map a tx queue
3137 * to a flow. Right now, performance is impacted slightly negatively
3138 * if using multiple tx queues. If the stack breaks away from a
3139 * single qdisc implementation, we can look at this again. */
3140 tx_ring
= adapter
->tx_ring
;
3142 if (unlikely(skb
->len
<= 0)) {
3143 dev_kfree_skb_any(skb
);
3144 return NETDEV_TX_OK
;
3147 /* 82571 and newer doesn't need the workaround that limited descriptor
3149 if (adapter
->hw
.mac_type
>= e1000_82571
)
3153 mss
= skb_shinfo(skb
)->gso_size
;
3154 /* The controller does a simple calculation to
3155 * make sure there is enough room in the FIFO before
3156 * initiating the DMA for each buffer. The calc is:
3157 * 4 = ceil(buffer len/mss). To make sure we don't
3158 * overrun the FIFO, adjust the max buffer len if mss
3162 max_per_txd
= min(mss
<< 2, max_per_txd
);
3163 max_txd_pwr
= fls(max_per_txd
) - 1;
3165 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3166 * points to just header, pull a few bytes of payload from
3167 * frags into skb->data */
3168 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3169 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3170 switch (adapter
->hw
.mac_type
) {
3171 unsigned int pull_size
;
3176 pull_size
= min((unsigned int)4, skb
->data_len
);
3177 if (!__pskb_pull_tail(skb
, pull_size
)) {
3179 "__pskb_pull_tail failed.\n");
3180 dev_kfree_skb_any(skb
);
3181 return NETDEV_TX_OK
;
3183 len
= skb
->len
- skb
->data_len
;
3192 /* reserve a descriptor for the offload context */
3193 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3197 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3202 /* Controller Erratum workaround */
3203 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3207 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3209 if (adapter
->pcix_82544
)
3212 /* work-around for errata 10 and it applies to all controllers
3213 * in PCI-X mode, so add one more descriptor to the count
3215 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3219 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3220 for (f
= 0; f
< nr_frags
; f
++)
3221 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3223 if (adapter
->pcix_82544
)
3227 if (adapter
->hw
.tx_pkt_filtering
&&
3228 (adapter
->hw
.mac_type
== e1000_82573
))
3229 e1000_transfer_dhcp_info(adapter
, skb
);
3231 local_irq_save(flags
);
3232 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3233 /* Collision - tell upper layer to requeue */
3234 local_irq_restore(flags
);
3235 return NETDEV_TX_LOCKED
;
3238 /* need: count + 2 desc gap to keep tail from touching
3239 * head, otherwise try next time */
3240 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3241 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3242 return NETDEV_TX_BUSY
;
3245 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3246 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3247 netif_stop_queue(netdev
);
3248 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3249 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3250 return NETDEV_TX_BUSY
;
3254 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3255 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3256 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3259 first
= tx_ring
->next_to_use
;
3261 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3263 dev_kfree_skb_any(skb
);
3264 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3265 return NETDEV_TX_OK
;
3269 tx_ring
->last_tx_tso
= 1;
3270 tx_flags
|= E1000_TX_FLAGS_TSO
;
3271 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3272 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3274 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3275 * 82571 hardware supports TSO capabilities for IPv6 as well...
3276 * no longer assume, we must. */
3277 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3278 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3280 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3281 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3282 max_per_txd
, nr_frags
, mss
));
3284 netdev
->trans_start
= jiffies
;
3286 /* Make sure there is space in the ring for the next send. */
3287 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3289 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3290 return NETDEV_TX_OK
;
3294 * e1000_tx_timeout - Respond to a Tx Hang
3295 * @netdev: network interface device structure
3299 e1000_tx_timeout(struct net_device
*netdev
)
3301 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3303 /* Do the reset outside of interrupt context */
3304 adapter
->tx_timeout_count
++;
3305 schedule_work(&adapter
->reset_task
);
3309 e1000_reset_task(struct net_device
*netdev
)
3311 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3313 e1000_reinit_locked(adapter
);
3317 * e1000_get_stats - Get System Network Statistics
3318 * @netdev: network interface device structure
3320 * Returns the address of the device statistics structure.
3321 * The statistics are actually updated from the timer callback.
3324 static struct net_device_stats
*
3325 e1000_get_stats(struct net_device
*netdev
)
3327 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3329 /* only return the current stats */
3330 return &adapter
->net_stats
;
3334 * e1000_change_mtu - Change the Maximum Transfer Unit
3335 * @netdev: network interface device structure
3336 * @new_mtu: new value for maximum frame size
3338 * Returns 0 on success, negative on failure
3342 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3344 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3345 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3346 uint16_t eeprom_data
= 0;
3348 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3349 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3350 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3354 /* Adapter-specific max frame size limits. */
3355 switch (adapter
->hw
.mac_type
) {
3356 case e1000_undefined
... e1000_82542_rev2_1
:
3358 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3359 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3364 /* Jumbo Frames not supported if:
3365 * - this is not an 82573L device
3366 * - ASPM is enabled in any way (0x1A bits 3:2) */
3367 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3369 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3370 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3371 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3373 "Jumbo Frames not supported.\n");
3378 /* ERT will be enabled later to enable wire speed receives */
3380 /* fall through to get support */
3383 case e1000_80003es2lan
:
3384 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3385 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3386 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3391 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3395 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3396 * means we reserve 2 more, this pushes us to allocate from the next
3398 * i.e. RXBUFFER_2048 --> size-4096 slab */
3400 if (max_frame
<= E1000_RXBUFFER_256
)
3401 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3402 else if (max_frame
<= E1000_RXBUFFER_512
)
3403 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3404 else if (max_frame
<= E1000_RXBUFFER_1024
)
3405 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3406 else if (max_frame
<= E1000_RXBUFFER_2048
)
3407 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3408 else if (max_frame
<= E1000_RXBUFFER_4096
)
3409 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3410 else if (max_frame
<= E1000_RXBUFFER_8192
)
3411 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3412 else if (max_frame
<= E1000_RXBUFFER_16384
)
3413 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3415 /* adjust allocation if LPE protects us, and we aren't using SBP */
3416 if (!adapter
->hw
.tbi_compatibility_on
&&
3417 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3418 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3419 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3421 netdev
->mtu
= new_mtu
;
3423 if (netif_running(netdev
))
3424 e1000_reinit_locked(adapter
);
3426 adapter
->hw
.max_frame_size
= max_frame
;
3432 * e1000_update_stats - Update the board statistics counters
3433 * @adapter: board private structure
3437 e1000_update_stats(struct e1000_adapter
*adapter
)
3439 struct e1000_hw
*hw
= &adapter
->hw
;
3440 struct pci_dev
*pdev
= adapter
->pdev
;
3441 unsigned long flags
;
3444 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3447 * Prevent stats update while adapter is being reset, or if the pci
3448 * connection is down.
3450 if (adapter
->link_speed
== 0)
3452 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3455 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3457 /* these counters are modified from e1000_adjust_tbi_stats,
3458 * called from the interrupt context, so they must only
3459 * be written while holding adapter->stats_lock
3462 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3463 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3464 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3465 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3466 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3467 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3468 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3470 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3471 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3472 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3473 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3474 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3475 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3476 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3479 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3480 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3481 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3482 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3483 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3484 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3485 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3486 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3487 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3488 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3489 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3490 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3491 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3492 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3493 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3494 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3495 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3496 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3497 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3498 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3499 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3500 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3501 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3502 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3503 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3504 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3506 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3507 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3508 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3509 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3510 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3511 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3512 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3515 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3516 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3518 /* used for adaptive IFS */
3520 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3521 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3522 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3523 adapter
->stats
.colc
+= hw
->collision_delta
;
3525 if (hw
->mac_type
>= e1000_82543
) {
3526 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3527 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3528 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3529 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3530 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3531 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3533 if (hw
->mac_type
> e1000_82547_rev_2
) {
3534 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3535 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3537 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3538 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3539 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3540 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3541 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3542 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3543 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3544 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3548 /* Fill out the OS statistics structure */
3549 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3550 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3551 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3552 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3553 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3554 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3558 /* RLEC on some newer hardware can be incorrect so build
3559 * our own version based on RUC and ROC */
3560 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3561 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3562 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3563 adapter
->stats
.cexterr
;
3564 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3565 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3566 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3567 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3568 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3571 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3572 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3573 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3574 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3575 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3577 /* Tx Dropped needs to be maintained elsewhere */
3580 if (hw
->media_type
== e1000_media_type_copper
) {
3581 if ((adapter
->link_speed
== SPEED_1000
) &&
3582 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3583 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3584 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3587 if ((hw
->mac_type
<= e1000_82546
) &&
3588 (hw
->phy_type
== e1000_phy_m88
) &&
3589 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3590 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3593 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3595 #ifdef CONFIG_PCI_MSI
3598 * e1000_intr_msi - Interrupt Handler
3599 * @irq: interrupt number
3600 * @data: pointer to a network interface device structure
3604 irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3606 struct net_device
*netdev
= data
;
3607 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3608 struct e1000_hw
*hw
= &adapter
->hw
;
3609 #ifndef CONFIG_E1000_NAPI
3613 /* this code avoids the read of ICR but has to get 1000 interrupts
3614 * at every link change event before it will notice the change */
3615 if (++adapter
->detect_link
>= 1000) {
3616 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3617 #ifdef CONFIG_E1000_NAPI
3618 /* read ICR disables interrupts using IAM, so keep up with our
3619 * enable/disable accounting */
3620 atomic_inc(&adapter
->irq_sem
);
3622 adapter
->detect_link
= 0;
3623 if ((icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) &&
3624 (icr
& E1000_ICR_INT_ASSERTED
)) {
3625 hw
->get_link_status
= 1;
3626 /* 80003ES2LAN workaround--
3627 * For packet buffer work-around on link down event;
3628 * disable receives here in the ISR and
3629 * reset adapter in watchdog
3631 if (netif_carrier_ok(netdev
) &&
3632 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3633 /* disable receives */
3634 uint32_t rctl
= E1000_READ_REG(hw
, RCTL
);
3635 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3637 /* guard against interrupt when we're going down */
3638 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3639 mod_timer(&adapter
->watchdog_timer
,
3643 E1000_WRITE_REG(hw
, ICR
, (0xffffffff & ~(E1000_ICR_RXSEQ
|
3645 /* bummer we have to flush here, but things break otherwise as
3646 * some event appears to be lost or delayed and throughput
3647 * drops. In almost all tests this flush is un-necessary */
3648 E1000_WRITE_FLUSH(hw
);
3649 #ifdef CONFIG_E1000_NAPI
3650 /* Interrupt Auto-Mask (IAM)...upon writing ICR, interrupts are
3651 * masked. No need for the IMC write, but it does mean we
3652 * should account for it ASAP. */
3653 atomic_inc(&adapter
->irq_sem
);
3657 #ifdef CONFIG_E1000_NAPI
3658 if (likely(netif_rx_schedule_prep(netdev
))) {
3659 adapter
->total_tx_bytes
= 0;
3660 adapter
->total_tx_packets
= 0;
3661 adapter
->total_rx_bytes
= 0;
3662 adapter
->total_rx_packets
= 0;
3663 __netif_rx_schedule(netdev
);
3665 e1000_irq_enable(adapter
);
3667 adapter
->total_tx_bytes
= 0;
3668 adapter
->total_rx_bytes
= 0;
3669 adapter
->total_tx_packets
= 0;
3670 adapter
->total_rx_packets
= 0;
3672 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3673 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3674 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3677 if (likely(adapter
->itr_setting
& 3))
3678 e1000_set_itr(adapter
);
3686 * e1000_intr - Interrupt Handler
3687 * @irq: interrupt number
3688 * @data: pointer to a network interface device structure
3692 e1000_intr(int irq
, void *data
)
3694 struct net_device
*netdev
= data
;
3695 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3696 struct e1000_hw
*hw
= &adapter
->hw
;
3697 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3698 #ifndef CONFIG_E1000_NAPI
3702 return IRQ_NONE
; /* Not our interrupt */
3704 #ifdef CONFIG_E1000_NAPI
3705 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3706 * not set, then the adapter didn't send an interrupt */
3707 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3708 !(icr
& E1000_ICR_INT_ASSERTED
)))
3711 /* Interrupt Auto-Mask...upon reading ICR,
3712 * interrupts are masked. No need for the
3713 * IMC write, but it does mean we should
3714 * account for it ASAP. */
3715 if (likely(hw
->mac_type
>= e1000_82571
))
3716 atomic_inc(&adapter
->irq_sem
);
3719 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3720 hw
->get_link_status
= 1;
3721 /* 80003ES2LAN workaround--
3722 * For packet buffer work-around on link down event;
3723 * disable receives here in the ISR and
3724 * reset adapter in watchdog
3726 if (netif_carrier_ok(netdev
) &&
3727 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3728 /* disable receives */
3729 rctl
= E1000_READ_REG(hw
, RCTL
);
3730 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3732 /* guard against interrupt when we're going down */
3733 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3734 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3737 #ifdef CONFIG_E1000_NAPI
3738 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3739 /* disable interrupts, without the synchronize_irq bit */
3740 atomic_inc(&adapter
->irq_sem
);
3741 E1000_WRITE_REG(hw
, IMC
, ~0);
3742 E1000_WRITE_FLUSH(hw
);
3744 if (likely(netif_rx_schedule_prep(netdev
))) {
3745 adapter
->total_tx_bytes
= 0;
3746 adapter
->total_tx_packets
= 0;
3747 adapter
->total_rx_bytes
= 0;
3748 adapter
->total_rx_packets
= 0;
3749 __netif_rx_schedule(netdev
);
3751 /* this really should not happen! if it does it is basically a
3752 * bug, but not a hard error, so enable ints and continue */
3753 e1000_irq_enable(adapter
);
3755 /* Writing IMC and IMS is needed for 82547.
3756 * Due to Hub Link bus being occupied, an interrupt
3757 * de-assertion message is not able to be sent.
3758 * When an interrupt assertion message is generated later,
3759 * two messages are re-ordered and sent out.
3760 * That causes APIC to think 82547 is in de-assertion
3761 * state, while 82547 is in assertion state, resulting
3762 * in dead lock. Writing IMC forces 82547 into
3763 * de-assertion state.
3765 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3766 atomic_inc(&adapter
->irq_sem
);
3767 E1000_WRITE_REG(hw
, IMC
, ~0);
3770 adapter
->total_tx_bytes
= 0;
3771 adapter
->total_rx_bytes
= 0;
3772 adapter
->total_tx_packets
= 0;
3773 adapter
->total_rx_packets
= 0;
3775 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3776 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3777 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3780 if (likely(adapter
->itr_setting
& 3))
3781 e1000_set_itr(adapter
);
3783 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3784 e1000_irq_enable(adapter
);
3790 #ifdef CONFIG_E1000_NAPI
3792 * e1000_clean - NAPI Rx polling callback
3793 * @adapter: board private structure
3797 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3799 struct e1000_adapter
*adapter
;
3800 int work_to_do
= min(*budget
, poll_dev
->quota
);
3801 int tx_cleaned
= 0, work_done
= 0;
3803 /* Must NOT use netdev_priv macro here. */
3804 adapter
= poll_dev
->priv
;
3806 /* Keep link state information with original netdev */
3807 if (!netif_carrier_ok(poll_dev
))
3810 /* e1000_clean is called per-cpu. This lock protects
3811 * tx_ring[0] from being cleaned by multiple cpus
3812 * simultaneously. A failure obtaining the lock means
3813 * tx_ring[0] is currently being cleaned anyway. */
3814 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3815 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3816 &adapter
->tx_ring
[0]);
3817 spin_unlock(&adapter
->tx_queue_lock
);
3820 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3821 &work_done
, work_to_do
);
3823 *budget
-= work_done
;
3824 poll_dev
->quota
-= work_done
;
3826 /* If no Tx and not enough Rx work done, exit the polling mode */
3827 if ((!tx_cleaned
&& (work_done
== 0)) ||
3828 !netif_running(poll_dev
)) {
3830 if (likely(adapter
->itr_setting
& 3))
3831 e1000_set_itr(adapter
);
3832 netif_rx_complete(poll_dev
);
3833 e1000_irq_enable(adapter
);
3842 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3843 * @adapter: board private structure
3847 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3848 struct e1000_tx_ring
*tx_ring
)
3850 struct net_device
*netdev
= adapter
->netdev
;
3851 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3852 struct e1000_buffer
*buffer_info
;
3853 unsigned int i
, eop
;
3854 #ifdef CONFIG_E1000_NAPI
3855 unsigned int count
= 0;
3857 boolean_t cleaned
= FALSE
;
3858 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3860 i
= tx_ring
->next_to_clean
;
3861 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3862 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3864 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3865 for (cleaned
= FALSE
; !cleaned
; ) {
3866 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3867 buffer_info
= &tx_ring
->buffer_info
[i
];
3868 cleaned
= (i
== eop
);
3871 /* this packet count is wrong for TSO but has a
3872 * tendency to make dynamic ITR change more
3875 total_tx_bytes
+= buffer_info
->skb
->len
;
3877 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3878 tx_desc
->upper
.data
= 0;
3880 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3883 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3884 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3885 #ifdef CONFIG_E1000_NAPI
3886 #define E1000_TX_WEIGHT 64
3887 /* weight of a sort for tx, to avoid endless transmit cleanup */
3888 if (count
++ == E1000_TX_WEIGHT
) break;
3892 tx_ring
->next_to_clean
= i
;
3894 #define TX_WAKE_THRESHOLD 32
3895 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3896 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3897 /* Make sure that anybody stopping the queue after this
3898 * sees the new next_to_clean.
3901 if (netif_queue_stopped(netdev
)) {
3902 netif_wake_queue(netdev
);
3903 ++adapter
->restart_queue
;
3907 if (adapter
->detect_tx_hung
) {
3908 /* Detect a transmit hang in hardware, this serializes the
3909 * check with the clearing of time_stamp and movement of i */
3910 adapter
->detect_tx_hung
= FALSE
;
3911 if (tx_ring
->buffer_info
[eop
].dma
&&
3912 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3913 (adapter
->tx_timeout_factor
* HZ
))
3914 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3915 E1000_STATUS_TXOFF
)) {
3917 /* detected Tx unit hang */
3918 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3922 " next_to_use <%x>\n"
3923 " next_to_clean <%x>\n"
3924 "buffer_info[next_to_clean]\n"
3925 " time_stamp <%lx>\n"
3926 " next_to_watch <%x>\n"
3928 " next_to_watch.status <%x>\n",
3929 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3930 sizeof(struct e1000_tx_ring
)),
3931 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3932 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3933 tx_ring
->next_to_use
,
3934 tx_ring
->next_to_clean
,
3935 tx_ring
->buffer_info
[eop
].time_stamp
,
3938 eop_desc
->upper
.fields
.status
);
3939 netif_stop_queue(netdev
);
3942 adapter
->total_tx_bytes
+= total_tx_bytes
;
3943 adapter
->total_tx_packets
+= total_tx_packets
;
3948 * e1000_rx_checksum - Receive Checksum Offload for 82543
3949 * @adapter: board private structure
3950 * @status_err: receive descriptor status and error fields
3951 * @csum: receive descriptor csum field
3952 * @sk_buff: socket buffer with received data
3956 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3957 uint32_t status_err
, uint32_t csum
,
3958 struct sk_buff
*skb
)
3960 uint16_t status
= (uint16_t)status_err
;
3961 uint8_t errors
= (uint8_t)(status_err
>> 24);
3962 skb
->ip_summed
= CHECKSUM_NONE
;
3964 /* 82543 or newer only */
3965 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3966 /* Ignore Checksum bit is set */
3967 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3968 /* TCP/UDP checksum error bit is set */
3969 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3970 /* let the stack verify checksum errors */
3971 adapter
->hw_csum_err
++;
3974 /* TCP/UDP Checksum has not been calculated */
3975 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3976 if (!(status
& E1000_RXD_STAT_TCPCS
))
3979 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3982 /* It must be a TCP or UDP packet with a valid checksum */
3983 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3984 /* TCP checksum is good */
3985 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3986 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3987 /* IP fragment with UDP payload */
3988 /* Hardware complements the payload checksum, so we undo it
3989 * and then put the value in host order for further stack use.
3991 csum
= ntohl(csum
^ 0xFFFF);
3993 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3995 adapter
->hw_csum_good
++;
3999 * e1000_clean_rx_irq - Send received data up the network stack; legacy
4000 * @adapter: board private structure
4004 #ifdef CONFIG_E1000_NAPI
4005 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4006 struct e1000_rx_ring
*rx_ring
,
4007 int *work_done
, int work_to_do
)
4009 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4010 struct e1000_rx_ring
*rx_ring
)
4013 struct net_device
*netdev
= adapter
->netdev
;
4014 struct pci_dev
*pdev
= adapter
->pdev
;
4015 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
4016 struct e1000_buffer
*buffer_info
, *next_buffer
;
4017 unsigned long flags
;
4021 int cleaned_count
= 0;
4022 boolean_t cleaned
= FALSE
;
4023 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4025 i
= rx_ring
->next_to_clean
;
4026 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4027 buffer_info
= &rx_ring
->buffer_info
[i
];
4029 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4030 struct sk_buff
*skb
;
4033 #ifdef CONFIG_E1000_NAPI
4034 if (*work_done
>= work_to_do
)
4038 status
= rx_desc
->status
;
4039 skb
= buffer_info
->skb
;
4040 buffer_info
->skb
= NULL
;
4042 prefetch(skb
->data
- NET_IP_ALIGN
);
4044 if (++i
== rx_ring
->count
) i
= 0;
4045 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4048 next_buffer
= &rx_ring
->buffer_info
[i
];
4052 pci_unmap_single(pdev
,
4054 buffer_info
->length
,
4055 PCI_DMA_FROMDEVICE
);
4057 length
= le16_to_cpu(rx_desc
->length
);
4059 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4060 /* All receives must fit into a single buffer */
4061 E1000_DBG("%s: Receive packet consumed multiple"
4062 " buffers\n", netdev
->name
);
4064 buffer_info
->skb
= skb
;
4068 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4069 last_byte
= *(skb
->data
+ length
- 1);
4070 if (TBI_ACCEPT(&adapter
->hw
, status
,
4071 rx_desc
->errors
, length
, last_byte
)) {
4072 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4073 e1000_tbi_adjust_stats(&adapter
->hw
,
4076 spin_unlock_irqrestore(&adapter
->stats_lock
,
4081 buffer_info
->skb
= skb
;
4086 /* adjust length to remove Ethernet CRC, this must be
4087 * done after the TBI_ACCEPT workaround above */
4090 /* probably a little skewed due to removing CRC */
4091 total_rx_bytes
+= length
;
4094 /* code added for copybreak, this should improve
4095 * performance for small packets with large amounts
4096 * of reassembly being done in the stack */
4097 #define E1000_CB_LENGTH 256
4098 if (length
< E1000_CB_LENGTH
) {
4099 struct sk_buff
*new_skb
=
4100 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4102 skb_reserve(new_skb
, NET_IP_ALIGN
);
4103 memcpy(new_skb
->data
- NET_IP_ALIGN
,
4104 skb
->data
- NET_IP_ALIGN
,
4105 length
+ NET_IP_ALIGN
);
4106 /* save the skb in buffer_info as good */
4107 buffer_info
->skb
= skb
;
4110 /* else just continue with the old one */
4112 /* end copybreak code */
4113 skb_put(skb
, length
);
4115 /* Receive Checksum Offload */
4116 e1000_rx_checksum(adapter
,
4117 (uint32_t)(status
) |
4118 ((uint32_t)(rx_desc
->errors
) << 24),
4119 le16_to_cpu(rx_desc
->csum
), skb
);
4121 skb
->protocol
= eth_type_trans(skb
, netdev
);
4122 #ifdef CONFIG_E1000_NAPI
4123 if (unlikely(adapter
->vlgrp
&&
4124 (status
& E1000_RXD_STAT_VP
))) {
4125 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4126 le16_to_cpu(rx_desc
->special
) &
4127 E1000_RXD_SPC_VLAN_MASK
);
4129 netif_receive_skb(skb
);
4131 #else /* CONFIG_E1000_NAPI */
4132 if (unlikely(adapter
->vlgrp
&&
4133 (status
& E1000_RXD_STAT_VP
))) {
4134 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4135 le16_to_cpu(rx_desc
->special
) &
4136 E1000_RXD_SPC_VLAN_MASK
);
4140 #endif /* CONFIG_E1000_NAPI */
4141 netdev
->last_rx
= jiffies
;
4144 rx_desc
->status
= 0;
4146 /* return some buffers to hardware, one at a time is too slow */
4147 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4148 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4152 /* use prefetched values */
4154 buffer_info
= next_buffer
;
4156 rx_ring
->next_to_clean
= i
;
4158 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4160 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4162 adapter
->total_rx_packets
+= total_rx_packets
;
4163 adapter
->total_rx_bytes
+= total_rx_bytes
;
4168 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
4169 * @adapter: board private structure
4173 #ifdef CONFIG_E1000_NAPI
4174 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4175 struct e1000_rx_ring
*rx_ring
,
4176 int *work_done
, int work_to_do
)
4178 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4179 struct e1000_rx_ring
*rx_ring
)
4182 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
4183 struct net_device
*netdev
= adapter
->netdev
;
4184 struct pci_dev
*pdev
= adapter
->pdev
;
4185 struct e1000_buffer
*buffer_info
, *next_buffer
;
4186 struct e1000_ps_page
*ps_page
;
4187 struct e1000_ps_page_dma
*ps_page_dma
;
4188 struct sk_buff
*skb
;
4190 uint32_t length
, staterr
;
4191 int cleaned_count
= 0;
4192 boolean_t cleaned
= FALSE
;
4193 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4195 i
= rx_ring
->next_to_clean
;
4196 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4197 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4198 buffer_info
= &rx_ring
->buffer_info
[i
];
4200 while (staterr
& E1000_RXD_STAT_DD
) {
4201 ps_page
= &rx_ring
->ps_page
[i
];
4202 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4203 #ifdef CONFIG_E1000_NAPI
4204 if (unlikely(*work_done
>= work_to_do
))
4208 skb
= buffer_info
->skb
;
4210 /* in the packet split case this is header only */
4211 prefetch(skb
->data
- NET_IP_ALIGN
);
4213 if (++i
== rx_ring
->count
) i
= 0;
4214 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
4217 next_buffer
= &rx_ring
->buffer_info
[i
];
4221 pci_unmap_single(pdev
, buffer_info
->dma
,
4222 buffer_info
->length
,
4223 PCI_DMA_FROMDEVICE
);
4225 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
4226 E1000_DBG("%s: Packet Split buffers didn't pick up"
4227 " the full packet\n", netdev
->name
);
4228 dev_kfree_skb_irq(skb
);
4232 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
4233 dev_kfree_skb_irq(skb
);
4237 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
4239 if (unlikely(!length
)) {
4240 E1000_DBG("%s: Last part of the packet spanning"
4241 " multiple descriptors\n", netdev
->name
);
4242 dev_kfree_skb_irq(skb
);
4247 skb_put(skb
, length
);
4250 /* this looks ugly, but it seems compiler issues make it
4251 more efficient than reusing j */
4252 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
4254 /* page alloc/put takes too long and effects small packet
4255 * throughput, so unsplit small packets and save the alloc/put*/
4256 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
4258 /* there is no documentation about how to call
4259 * kmap_atomic, so we can't hold the mapping
4261 pci_dma_sync_single_for_cpu(pdev
,
4262 ps_page_dma
->ps_page_dma
[0],
4264 PCI_DMA_FROMDEVICE
);
4265 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
4266 KM_SKB_DATA_SOFTIRQ
);
4267 memcpy(skb
->tail
, vaddr
, l1
);
4268 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
4269 pci_dma_sync_single_for_device(pdev
,
4270 ps_page_dma
->ps_page_dma
[0],
4271 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4272 /* remove the CRC */
4279 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4280 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4282 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4283 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4284 ps_page_dma
->ps_page_dma
[j
] = 0;
4285 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4287 ps_page
->ps_page
[j
] = NULL
;
4289 skb
->data_len
+= length
;
4290 skb
->truesize
+= length
;
4293 /* strip the ethernet crc, problem is we're using pages now so
4294 * this whole operation can get a little cpu intensive */
4295 pskb_trim(skb
, skb
->len
- 4);
4298 total_rx_bytes
+= skb
->len
;
4301 e1000_rx_checksum(adapter
, staterr
,
4302 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4303 skb
->protocol
= eth_type_trans(skb
, netdev
);
4305 if (likely(rx_desc
->wb
.upper
.header_status
&
4306 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4307 adapter
->rx_hdr_split
++;
4308 #ifdef CONFIG_E1000_NAPI
4309 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4310 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4311 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4312 E1000_RXD_SPC_VLAN_MASK
);
4314 netif_receive_skb(skb
);
4316 #else /* CONFIG_E1000_NAPI */
4317 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4318 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4319 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4320 E1000_RXD_SPC_VLAN_MASK
);
4324 #endif /* CONFIG_E1000_NAPI */
4325 netdev
->last_rx
= jiffies
;
4328 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4329 buffer_info
->skb
= NULL
;
4331 /* return some buffers to hardware, one at a time is too slow */
4332 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4333 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4337 /* use prefetched values */
4339 buffer_info
= next_buffer
;
4341 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4343 rx_ring
->next_to_clean
= i
;
4345 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4347 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4349 adapter
->total_rx_packets
+= total_rx_packets
;
4350 adapter
->total_rx_bytes
+= total_rx_bytes
;
4355 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4356 * @adapter: address of board private structure
4360 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4361 struct e1000_rx_ring
*rx_ring
,
4364 struct net_device
*netdev
= adapter
->netdev
;
4365 struct pci_dev
*pdev
= adapter
->pdev
;
4366 struct e1000_rx_desc
*rx_desc
;
4367 struct e1000_buffer
*buffer_info
;
4368 struct sk_buff
*skb
;
4370 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4372 i
= rx_ring
->next_to_use
;
4373 buffer_info
= &rx_ring
->buffer_info
[i
];
4375 while (cleaned_count
--) {
4376 skb
= buffer_info
->skb
;
4382 skb
= netdev_alloc_skb(netdev
, bufsz
);
4383 if (unlikely(!skb
)) {
4384 /* Better luck next round */
4385 adapter
->alloc_rx_buff_failed
++;
4389 /* Fix for errata 23, can't cross 64kB boundary */
4390 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4391 struct sk_buff
*oldskb
= skb
;
4392 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4393 "at %p\n", bufsz
, skb
->data
);
4394 /* Try again, without freeing the previous */
4395 skb
= netdev_alloc_skb(netdev
, bufsz
);
4396 /* Failed allocation, critical failure */
4398 dev_kfree_skb(oldskb
);
4402 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4405 dev_kfree_skb(oldskb
);
4406 break; /* while !buffer_info->skb */
4409 /* Use new allocation */
4410 dev_kfree_skb(oldskb
);
4412 /* Make buffer alignment 2 beyond a 16 byte boundary
4413 * this will result in a 16 byte aligned IP header after
4414 * the 14 byte MAC header is removed
4416 skb_reserve(skb
, NET_IP_ALIGN
);
4418 buffer_info
->skb
= skb
;
4419 buffer_info
->length
= adapter
->rx_buffer_len
;
4421 buffer_info
->dma
= pci_map_single(pdev
,
4423 adapter
->rx_buffer_len
,
4424 PCI_DMA_FROMDEVICE
);
4426 /* Fix for errata 23, can't cross 64kB boundary */
4427 if (!e1000_check_64k_bound(adapter
,
4428 (void *)(unsigned long)buffer_info
->dma
,
4429 adapter
->rx_buffer_len
)) {
4430 DPRINTK(RX_ERR
, ERR
,
4431 "dma align check failed: %u bytes at %p\n",
4432 adapter
->rx_buffer_len
,
4433 (void *)(unsigned long)buffer_info
->dma
);
4435 buffer_info
->skb
= NULL
;
4437 pci_unmap_single(pdev
, buffer_info
->dma
,
4438 adapter
->rx_buffer_len
,
4439 PCI_DMA_FROMDEVICE
);
4441 break; /* while !buffer_info->skb */
4443 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4444 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4446 if (unlikely(++i
== rx_ring
->count
))
4448 buffer_info
= &rx_ring
->buffer_info
[i
];
4451 if (likely(rx_ring
->next_to_use
!= i
)) {
4452 rx_ring
->next_to_use
= i
;
4453 if (unlikely(i
-- == 0))
4454 i
= (rx_ring
->count
- 1);
4456 /* Force memory writes to complete before letting h/w
4457 * know there are new descriptors to fetch. (Only
4458 * applicable for weak-ordered memory model archs,
4459 * such as IA-64). */
4461 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4466 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4467 * @adapter: address of board private structure
4471 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4472 struct e1000_rx_ring
*rx_ring
,
4475 struct net_device
*netdev
= adapter
->netdev
;
4476 struct pci_dev
*pdev
= adapter
->pdev
;
4477 union e1000_rx_desc_packet_split
*rx_desc
;
4478 struct e1000_buffer
*buffer_info
;
4479 struct e1000_ps_page
*ps_page
;
4480 struct e1000_ps_page_dma
*ps_page_dma
;
4481 struct sk_buff
*skb
;
4484 i
= rx_ring
->next_to_use
;
4485 buffer_info
= &rx_ring
->buffer_info
[i
];
4486 ps_page
= &rx_ring
->ps_page
[i
];
4487 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4489 while (cleaned_count
--) {
4490 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4492 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4493 if (j
< adapter
->rx_ps_pages
) {
4494 if (likely(!ps_page
->ps_page
[j
])) {
4495 ps_page
->ps_page
[j
] =
4496 alloc_page(GFP_ATOMIC
);
4497 if (unlikely(!ps_page
->ps_page
[j
])) {
4498 adapter
->alloc_rx_buff_failed
++;
4501 ps_page_dma
->ps_page_dma
[j
] =
4503 ps_page
->ps_page
[j
],
4505 PCI_DMA_FROMDEVICE
);
4507 /* Refresh the desc even if buffer_addrs didn't
4508 * change because each write-back erases
4511 rx_desc
->read
.buffer_addr
[j
+1] =
4512 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4514 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4517 skb
= netdev_alloc_skb(netdev
,
4518 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4520 if (unlikely(!skb
)) {
4521 adapter
->alloc_rx_buff_failed
++;
4525 /* Make buffer alignment 2 beyond a 16 byte boundary
4526 * this will result in a 16 byte aligned IP header after
4527 * the 14 byte MAC header is removed
4529 skb_reserve(skb
, NET_IP_ALIGN
);
4531 buffer_info
->skb
= skb
;
4532 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4533 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4534 adapter
->rx_ps_bsize0
,
4535 PCI_DMA_FROMDEVICE
);
4537 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4539 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4540 buffer_info
= &rx_ring
->buffer_info
[i
];
4541 ps_page
= &rx_ring
->ps_page
[i
];
4542 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4546 if (likely(rx_ring
->next_to_use
!= i
)) {
4547 rx_ring
->next_to_use
= i
;
4548 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4550 /* Force memory writes to complete before letting h/w
4551 * know there are new descriptors to fetch. (Only
4552 * applicable for weak-ordered memory model archs,
4553 * such as IA-64). */
4555 /* Hardware increments by 16 bytes, but packet split
4556 * descriptors are 32 bytes...so we increment tail
4559 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4564 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4569 e1000_smartspeed(struct e1000_adapter
*adapter
)
4571 uint16_t phy_status
;
4574 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4575 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4578 if (adapter
->smartspeed
== 0) {
4579 /* If Master/Slave config fault is asserted twice,
4580 * we assume back-to-back */
4581 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4582 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4583 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4584 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4585 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4586 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4587 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4588 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4590 adapter
->smartspeed
++;
4591 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4592 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4594 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4595 MII_CR_RESTART_AUTO_NEG
);
4596 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4601 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4602 /* If still no link, perhaps using 2/3 pair cable */
4603 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4604 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4605 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4606 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4607 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4608 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4609 MII_CR_RESTART_AUTO_NEG
);
4610 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4613 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4614 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4615 adapter
->smartspeed
= 0;
4626 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4632 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4646 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4648 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4649 struct mii_ioctl_data
*data
= if_mii(ifr
);
4653 unsigned long flags
;
4655 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4660 data
->phy_id
= adapter
->hw
.phy_addr
;
4663 if (!capable(CAP_NET_ADMIN
))
4665 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4666 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4668 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4671 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4674 if (!capable(CAP_NET_ADMIN
))
4676 if (data
->reg_num
& ~(0x1F))
4678 mii_reg
= data
->val_in
;
4679 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4680 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4682 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4685 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4686 switch (data
->reg_num
) {
4688 if (mii_reg
& MII_CR_POWER_DOWN
)
4690 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4691 adapter
->hw
.autoneg
= 1;
4692 adapter
->hw
.autoneg_advertised
= 0x2F;
4695 spddplx
= SPEED_1000
;
4696 else if (mii_reg
& 0x2000)
4697 spddplx
= SPEED_100
;
4700 spddplx
+= (mii_reg
& 0x100)
4703 retval
= e1000_set_spd_dplx(adapter
,
4706 spin_unlock_irqrestore(
4707 &adapter
->stats_lock
,
4712 if (netif_running(adapter
->netdev
))
4713 e1000_reinit_locked(adapter
);
4715 e1000_reset(adapter
);
4717 case M88E1000_PHY_SPEC_CTRL
:
4718 case M88E1000_EXT_PHY_SPEC_CTRL
:
4719 if (e1000_phy_reset(&adapter
->hw
)) {
4720 spin_unlock_irqrestore(
4721 &adapter
->stats_lock
, flags
);
4727 switch (data
->reg_num
) {
4729 if (mii_reg
& MII_CR_POWER_DOWN
)
4731 if (netif_running(adapter
->netdev
))
4732 e1000_reinit_locked(adapter
);
4734 e1000_reset(adapter
);
4738 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4743 return E1000_SUCCESS
;
4747 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4749 struct e1000_adapter
*adapter
= hw
->back
;
4750 int ret_val
= pci_set_mwi(adapter
->pdev
);
4753 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4757 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4759 struct e1000_adapter
*adapter
= hw
->back
;
4761 pci_clear_mwi(adapter
->pdev
);
4765 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4767 struct e1000_adapter
*adapter
= hw
->back
;
4769 pci_read_config_word(adapter
->pdev
, reg
, value
);
4773 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4775 struct e1000_adapter
*adapter
= hw
->back
;
4777 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4781 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4783 struct e1000_adapter
*adapter
= hw
->back
;
4784 uint16_t cap_offset
;
4786 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4788 return -E1000_ERR_CONFIG
;
4790 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4792 return E1000_SUCCESS
;
4796 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4802 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4804 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4805 uint32_t ctrl
, rctl
;
4807 e1000_irq_disable(adapter
);
4808 adapter
->vlgrp
= grp
;
4811 /* enable VLAN tag insert/strip */
4812 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4813 ctrl
|= E1000_CTRL_VME
;
4814 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4816 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4817 /* enable VLAN receive filtering */
4818 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4819 rctl
|= E1000_RCTL_VFE
;
4820 rctl
&= ~E1000_RCTL_CFIEN
;
4821 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4822 e1000_update_mng_vlan(adapter
);
4825 /* disable VLAN tag insert/strip */
4826 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4827 ctrl
&= ~E1000_CTRL_VME
;
4828 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4830 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4831 /* disable VLAN filtering */
4832 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4833 rctl
&= ~E1000_RCTL_VFE
;
4834 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4835 if (adapter
->mng_vlan_id
!=
4836 (uint16_t)E1000_MNG_VLAN_NONE
) {
4837 e1000_vlan_rx_kill_vid(netdev
,
4838 adapter
->mng_vlan_id
);
4839 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4844 e1000_irq_enable(adapter
);
4848 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4850 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4851 uint32_t vfta
, index
;
4853 if ((adapter
->hw
.mng_cookie
.status
&
4854 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4855 (vid
== adapter
->mng_vlan_id
))
4857 /* add VID to filter table */
4858 index
= (vid
>> 5) & 0x7F;
4859 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4860 vfta
|= (1 << (vid
& 0x1F));
4861 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4865 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4867 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4868 uint32_t vfta
, index
;
4870 e1000_irq_disable(adapter
);
4873 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4875 e1000_irq_enable(adapter
);
4877 if ((adapter
->hw
.mng_cookie
.status
&
4878 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4879 (vid
== adapter
->mng_vlan_id
)) {
4880 /* release control to f/w */
4881 e1000_release_hw_control(adapter
);
4885 /* remove VID from filter table */
4886 index
= (vid
>> 5) & 0x7F;
4887 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4888 vfta
&= ~(1 << (vid
& 0x1F));
4889 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4893 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4895 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4897 if (adapter
->vlgrp
) {
4899 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4900 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4902 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4908 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4910 adapter
->hw
.autoneg
= 0;
4912 /* Fiber NICs only allow 1000 gbps Full duplex */
4913 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4914 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4915 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4920 case SPEED_10
+ DUPLEX_HALF
:
4921 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4923 case SPEED_10
+ DUPLEX_FULL
:
4924 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4926 case SPEED_100
+ DUPLEX_HALF
:
4927 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4929 case SPEED_100
+ DUPLEX_FULL
:
4930 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4932 case SPEED_1000
+ DUPLEX_FULL
:
4933 adapter
->hw
.autoneg
= 1;
4934 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4936 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4938 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4945 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4946 * bus we're on (PCI(X) vs. PCI-E)
4948 #define PCIE_CONFIG_SPACE_LEN 256
4949 #define PCI_CONFIG_SPACE_LEN 64
4951 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4953 struct pci_dev
*dev
= adapter
->pdev
;
4957 if (adapter
->hw
.mac_type
>= e1000_82571
)
4958 size
= PCIE_CONFIG_SPACE_LEN
;
4960 size
= PCI_CONFIG_SPACE_LEN
;
4962 WARN_ON(adapter
->config_space
!= NULL
);
4964 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4965 if (!adapter
->config_space
) {
4966 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4969 for (i
= 0; i
< (size
/ 4); i
++)
4970 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4975 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4977 struct pci_dev
*dev
= adapter
->pdev
;
4981 if (adapter
->config_space
== NULL
)
4984 if (adapter
->hw
.mac_type
>= e1000_82571
)
4985 size
= PCIE_CONFIG_SPACE_LEN
;
4987 size
= PCI_CONFIG_SPACE_LEN
;
4988 for (i
= 0; i
< (size
/ 4); i
++)
4989 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4990 kfree(adapter
->config_space
);
4991 adapter
->config_space
= NULL
;
4994 #endif /* CONFIG_PM */
4997 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4999 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5000 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5001 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
5002 uint32_t wufc
= adapter
->wol
;
5007 netif_device_detach(netdev
);
5009 if (netif_running(netdev
)) {
5010 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
5011 e1000_down(adapter
);
5015 /* Implement our own version of pci_save_state(pdev) because pci-
5016 * express adapters have 256-byte config spaces. */
5017 retval
= e1000_pci_save_state(adapter
);
5022 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
5023 if (status
& E1000_STATUS_LU
)
5024 wufc
&= ~E1000_WUFC_LNKC
;
5027 e1000_setup_rctl(adapter
);
5028 e1000_set_multi(netdev
);
5030 /* turn on all-multi mode if wake on multicast is enabled */
5031 if (wufc
& E1000_WUFC_MC
) {
5032 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
5033 rctl
|= E1000_RCTL_MPE
;
5034 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
5037 if (adapter
->hw
.mac_type
>= e1000_82540
) {
5038 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
5039 /* advertise wake from D3Cold */
5040 #define E1000_CTRL_ADVD3WUC 0x00100000
5041 /* phy power management enable */
5042 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5043 ctrl
|= E1000_CTRL_ADVD3WUC
|
5044 E1000_CTRL_EN_PHY_PWR_MGMT
;
5045 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
5048 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
5049 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
5050 /* keep the laser running in D3 */
5051 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
5052 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
5053 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
5056 /* Allow time for pending master requests to run */
5057 e1000_disable_pciex_master(&adapter
->hw
);
5059 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
5060 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
5061 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5062 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5064 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
5065 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
5066 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5067 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5070 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5071 adapter
->hw
.mac_type
< e1000_82571
&&
5072 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5073 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5074 if (manc
& E1000_MANC_SMBUS_EN
) {
5075 manc
|= E1000_MANC_ARP_EN
;
5076 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5077 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5078 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5082 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
5083 e1000_phy_powerdown_workaround(&adapter
->hw
);
5085 if (netif_running(netdev
))
5086 e1000_free_irq(adapter
);
5088 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5089 * would have already happened in close and is redundant. */
5090 e1000_release_hw_control(adapter
);
5092 pci_disable_device(pdev
);
5094 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
5101 e1000_resume(struct pci_dev
*pdev
)
5103 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5104 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5107 pci_set_power_state(pdev
, PCI_D0
);
5108 e1000_pci_restore_state(adapter
);
5109 if ((err
= pci_enable_device(pdev
))) {
5110 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
5113 pci_set_master(pdev
);
5115 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5116 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5118 if (netif_running(netdev
) && (err
= e1000_request_irq(adapter
)))
5121 e1000_power_up_phy(adapter
);
5122 e1000_reset(adapter
);
5123 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5125 if (netif_running(netdev
))
5128 netif_device_attach(netdev
);
5130 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5131 adapter
->hw
.mac_type
< e1000_82571
&&
5132 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5133 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5134 manc
&= ~(E1000_MANC_ARP_EN
);
5135 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5138 /* If the controller is 82573 and f/w is AMT, do not set
5139 * DRV_LOAD until the interface is up. For all other cases,
5140 * let the f/w know that the h/w is now under the control
5142 if (adapter
->hw
.mac_type
!= e1000_82573
||
5143 !e1000_check_mng_mode(&adapter
->hw
))
5144 e1000_get_hw_control(adapter
);
5150 static void e1000_shutdown(struct pci_dev
*pdev
)
5152 e1000_suspend(pdev
, PMSG_SUSPEND
);
5155 #ifdef CONFIG_NET_POLL_CONTROLLER
5157 * Polling 'interrupt' - used by things like netconsole to send skbs
5158 * without having to re-enable interrupts. It's not called while
5159 * the interrupt routine is executing.
5162 e1000_netpoll(struct net_device
*netdev
)
5164 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5166 disable_irq(adapter
->pdev
->irq
);
5167 e1000_intr(adapter
->pdev
->irq
, netdev
);
5168 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
5169 #ifndef CONFIG_E1000_NAPI
5170 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
5172 enable_irq(adapter
->pdev
->irq
);
5177 * e1000_io_error_detected - called when PCI error is detected
5178 * @pdev: Pointer to PCI device
5179 * @state: The current pci conneection state
5181 * This function is called after a PCI bus error affecting
5182 * this device has been detected.
5184 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
5186 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5187 struct e1000_adapter
*adapter
= netdev
->priv
;
5189 netif_device_detach(netdev
);
5191 if (netif_running(netdev
))
5192 e1000_down(adapter
);
5193 pci_disable_device(pdev
);
5195 /* Request a slot slot reset. */
5196 return PCI_ERS_RESULT_NEED_RESET
;
5200 * e1000_io_slot_reset - called after the pci bus has been reset.
5201 * @pdev: Pointer to PCI device
5203 * Restart the card from scratch, as if from a cold-boot. Implementation
5204 * resembles the first-half of the e1000_resume routine.
5206 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5208 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5209 struct e1000_adapter
*adapter
= netdev
->priv
;
5211 if (pci_enable_device(pdev
)) {
5212 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
5213 return PCI_ERS_RESULT_DISCONNECT
;
5215 pci_set_master(pdev
);
5217 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5218 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5220 e1000_reset(adapter
);
5221 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5223 return PCI_ERS_RESULT_RECOVERED
;
5227 * e1000_io_resume - called when traffic can start flowing again.
5228 * @pdev: Pointer to PCI device
5230 * This callback is called when the error recovery driver tells us that
5231 * its OK to resume normal operation. Implementation resembles the
5232 * second-half of the e1000_resume routine.
5234 static void e1000_io_resume(struct pci_dev
*pdev
)
5236 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5237 struct e1000_adapter
*adapter
= netdev
->priv
;
5238 uint32_t manc
, swsm
;
5240 if (netif_running(netdev
)) {
5241 if (e1000_up(adapter
)) {
5242 printk("e1000: can't bring device back up after reset\n");
5247 netif_device_attach(netdev
);
5249 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5250 adapter
->hw
.mac_type
< e1000_82571
&&
5251 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5252 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5253 manc
&= ~(E1000_MANC_ARP_EN
);
5254 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5257 switch (adapter
->hw
.mac_type
) {
5259 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
5260 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
5261 swsm
| E1000_SWSM_DRV_LOAD
);
5267 if (netif_running(netdev
))
5268 mod_timer(&adapter
->watchdog_timer
, jiffies
);