1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
31 char e1000_driver_name
[] = "e1000";
32 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
33 #ifndef CONFIG_E1000_NAPI
36 #define DRIVERNAPI "-NAPI"
38 #define DRV_VERSION "7.3.15-k2"DRIVERNAPI
39 char e1000_driver_version
[] = DRV_VERSION
;
40 static char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
42 /* e1000_pci_tbl - PCI Device ID Table
44 * Last entry must be all 0s
47 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
49 static struct pci_device_id e1000_pci_tbl
[] = {
50 INTEL_E1000_ETHERNET_DEVICE(0x1000),
51 INTEL_E1000_ETHERNET_DEVICE(0x1001),
52 INTEL_E1000_ETHERNET_DEVICE(0x1004),
53 INTEL_E1000_ETHERNET_DEVICE(0x1008),
54 INTEL_E1000_ETHERNET_DEVICE(0x1009),
55 INTEL_E1000_ETHERNET_DEVICE(0x100C),
56 INTEL_E1000_ETHERNET_DEVICE(0x100D),
57 INTEL_E1000_ETHERNET_DEVICE(0x100E),
58 INTEL_E1000_ETHERNET_DEVICE(0x100F),
59 INTEL_E1000_ETHERNET_DEVICE(0x1010),
60 INTEL_E1000_ETHERNET_DEVICE(0x1011),
61 INTEL_E1000_ETHERNET_DEVICE(0x1012),
62 INTEL_E1000_ETHERNET_DEVICE(0x1013),
63 INTEL_E1000_ETHERNET_DEVICE(0x1014),
64 INTEL_E1000_ETHERNET_DEVICE(0x1015),
65 INTEL_E1000_ETHERNET_DEVICE(0x1016),
66 INTEL_E1000_ETHERNET_DEVICE(0x1017),
67 INTEL_E1000_ETHERNET_DEVICE(0x1018),
68 INTEL_E1000_ETHERNET_DEVICE(0x1019),
69 INTEL_E1000_ETHERNET_DEVICE(0x101A),
70 INTEL_E1000_ETHERNET_DEVICE(0x101D),
71 INTEL_E1000_ETHERNET_DEVICE(0x101E),
72 INTEL_E1000_ETHERNET_DEVICE(0x1026),
73 INTEL_E1000_ETHERNET_DEVICE(0x1027),
74 INTEL_E1000_ETHERNET_DEVICE(0x1028),
75 INTEL_E1000_ETHERNET_DEVICE(0x1049),
76 INTEL_E1000_ETHERNET_DEVICE(0x104A),
77 INTEL_E1000_ETHERNET_DEVICE(0x104B),
78 INTEL_E1000_ETHERNET_DEVICE(0x104C),
79 INTEL_E1000_ETHERNET_DEVICE(0x104D),
80 INTEL_E1000_ETHERNET_DEVICE(0x105E),
81 INTEL_E1000_ETHERNET_DEVICE(0x105F),
82 INTEL_E1000_ETHERNET_DEVICE(0x1060),
83 INTEL_E1000_ETHERNET_DEVICE(0x1075),
84 INTEL_E1000_ETHERNET_DEVICE(0x1076),
85 INTEL_E1000_ETHERNET_DEVICE(0x1077),
86 INTEL_E1000_ETHERNET_DEVICE(0x1078),
87 INTEL_E1000_ETHERNET_DEVICE(0x1079),
88 INTEL_E1000_ETHERNET_DEVICE(0x107A),
89 INTEL_E1000_ETHERNET_DEVICE(0x107B),
90 INTEL_E1000_ETHERNET_DEVICE(0x107C),
91 INTEL_E1000_ETHERNET_DEVICE(0x107D),
92 INTEL_E1000_ETHERNET_DEVICE(0x107E),
93 INTEL_E1000_ETHERNET_DEVICE(0x107F),
94 INTEL_E1000_ETHERNET_DEVICE(0x108A),
95 INTEL_E1000_ETHERNET_DEVICE(0x108B),
96 INTEL_E1000_ETHERNET_DEVICE(0x108C),
97 INTEL_E1000_ETHERNET_DEVICE(0x1096),
98 INTEL_E1000_ETHERNET_DEVICE(0x1098),
99 INTEL_E1000_ETHERNET_DEVICE(0x1099),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
102 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
104 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
106 INTEL_E1000_ETHERNET_DEVICE(0x10BC),
107 INTEL_E1000_ETHERNET_DEVICE(0x10C4),
108 INTEL_E1000_ETHERNET_DEVICE(0x10C5),
109 /* required last entry */
113 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
115 int e1000_up(struct e1000_adapter
*adapter
);
116 void e1000_down(struct e1000_adapter
*adapter
);
117 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
118 void e1000_reset(struct e1000_adapter
*adapter
);
119 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
120 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
121 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
122 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
123 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
124 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
125 struct e1000_tx_ring
*txdr
);
126 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
127 struct e1000_rx_ring
*rxdr
);
128 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
129 struct e1000_tx_ring
*tx_ring
);
130 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
131 struct e1000_rx_ring
*rx_ring
);
132 void e1000_update_stats(struct e1000_adapter
*adapter
);
134 static int e1000_init_module(void);
135 static void e1000_exit_module(void);
136 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
137 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
138 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
139 static int e1000_sw_init(struct e1000_adapter
*adapter
);
140 static int e1000_open(struct net_device
*netdev
);
141 static int e1000_close(struct net_device
*netdev
);
142 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
143 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
144 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
145 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
146 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
147 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
148 struct e1000_tx_ring
*tx_ring
);
149 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
150 struct e1000_rx_ring
*rx_ring
);
151 static void e1000_set_multi(struct net_device
*netdev
);
152 static void e1000_update_phy_info(unsigned long data
);
153 static void e1000_watchdog(unsigned long data
);
154 static void e1000_82547_tx_fifo_stall(unsigned long data
);
155 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
156 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
157 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
158 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
159 static irqreturn_t
e1000_intr(int irq
, void *data
);
160 #ifdef CONFIG_PCI_MSI
161 static irqreturn_t
e1000_intr_msi(int irq
, void *data
);
163 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
164 struct e1000_tx_ring
*tx_ring
);
165 #ifdef CONFIG_E1000_NAPI
166 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
167 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
168 struct e1000_rx_ring
*rx_ring
,
169 int *work_done
, int work_to_do
);
170 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
171 struct e1000_rx_ring
*rx_ring
,
172 int *work_done
, int work_to_do
);
174 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
175 struct e1000_rx_ring
*rx_ring
);
176 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
177 struct e1000_rx_ring
*rx_ring
);
179 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
180 struct e1000_rx_ring
*rx_ring
,
182 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
183 struct e1000_rx_ring
*rx_ring
,
185 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
186 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
188 void e1000_set_ethtool_ops(struct net_device
*netdev
);
189 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
190 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
191 static void e1000_tx_timeout(struct net_device
*dev
);
192 static void e1000_reset_task(struct net_device
*dev
);
193 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
194 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
195 struct sk_buff
*skb
);
197 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
198 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
199 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
200 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
202 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
204 static int e1000_resume(struct pci_dev
*pdev
);
206 static void e1000_shutdown(struct pci_dev
*pdev
);
208 #ifdef CONFIG_NET_POLL_CONTROLLER
209 /* for netdump / net console */
210 static void e1000_netpoll (struct net_device
*netdev
);
213 extern void e1000_check_options(struct e1000_adapter
*adapter
);
215 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
216 pci_channel_state_t state
);
217 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
218 static void e1000_io_resume(struct pci_dev
*pdev
);
220 static struct pci_error_handlers e1000_err_handler
= {
221 .error_detected
= e1000_io_error_detected
,
222 .slot_reset
= e1000_io_slot_reset
,
223 .resume
= e1000_io_resume
,
226 static struct pci_driver e1000_driver
= {
227 .name
= e1000_driver_name
,
228 .id_table
= e1000_pci_tbl
,
229 .probe
= e1000_probe
,
230 .remove
= __devexit_p(e1000_remove
),
232 /* Power Managment Hooks */
233 .suspend
= e1000_suspend
,
234 .resume
= e1000_resume
,
236 .shutdown
= e1000_shutdown
,
237 .err_handler
= &e1000_err_handler
240 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
241 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
242 MODULE_LICENSE("GPL");
243 MODULE_VERSION(DRV_VERSION
);
245 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
246 module_param(debug
, int, 0);
247 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
250 * e1000_init_module - Driver Registration Routine
252 * e1000_init_module is the first routine called when the driver is
253 * loaded. All it does is register with the PCI subsystem.
257 e1000_init_module(void)
260 printk(KERN_INFO
"%s - version %s\n",
261 e1000_driver_string
, e1000_driver_version
);
263 printk(KERN_INFO
"%s\n", e1000_copyright
);
265 ret
= pci_register_driver(&e1000_driver
);
270 module_init(e1000_init_module
);
273 * e1000_exit_module - Driver Exit Cleanup Routine
275 * e1000_exit_module is called just before the driver is removed
280 e1000_exit_module(void)
282 pci_unregister_driver(&e1000_driver
);
285 module_exit(e1000_exit_module
);
287 static int e1000_request_irq(struct e1000_adapter
*adapter
)
289 struct net_device
*netdev
= adapter
->netdev
;
293 #ifdef CONFIG_PCI_MSI
294 if (adapter
->hw
.mac_type
>= e1000_82571
) {
295 adapter
->have_msi
= TRUE
;
296 if ((err
= pci_enable_msi(adapter
->pdev
))) {
298 "Unable to allocate MSI interrupt Error: %d\n", err
);
299 adapter
->have_msi
= FALSE
;
302 if (adapter
->have_msi
) {
303 flags
&= ~IRQF_SHARED
;
304 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, flags
,
305 netdev
->name
, netdev
);
308 "Unable to allocate interrupt Error: %d\n", err
);
311 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
312 netdev
->name
, netdev
)))
314 "Unable to allocate interrupt Error: %d\n", err
);
319 static void e1000_free_irq(struct e1000_adapter
*adapter
)
321 struct net_device
*netdev
= adapter
->netdev
;
323 free_irq(adapter
->pdev
->irq
, netdev
);
325 #ifdef CONFIG_PCI_MSI
326 if (adapter
->have_msi
)
327 pci_disable_msi(adapter
->pdev
);
332 * e1000_irq_disable - Mask off interrupt generation on the NIC
333 * @adapter: board private structure
337 e1000_irq_disable(struct e1000_adapter
*adapter
)
339 atomic_inc(&adapter
->irq_sem
);
340 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
341 E1000_WRITE_FLUSH(&adapter
->hw
);
342 synchronize_irq(adapter
->pdev
->irq
);
346 * e1000_irq_enable - Enable default interrupt generation settings
347 * @adapter: board private structure
351 e1000_irq_enable(struct e1000_adapter
*adapter
)
353 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
354 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
355 E1000_WRITE_FLUSH(&adapter
->hw
);
360 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
362 struct net_device
*netdev
= adapter
->netdev
;
363 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
364 uint16_t old_vid
= adapter
->mng_vlan_id
;
365 if (adapter
->vlgrp
) {
366 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
367 if (adapter
->hw
.mng_cookie
.status
&
368 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
369 e1000_vlan_rx_add_vid(netdev
, vid
);
370 adapter
->mng_vlan_id
= vid
;
372 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
374 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
376 !adapter
->vlgrp
->vlan_devices
[old_vid
])
377 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
379 adapter
->mng_vlan_id
= vid
;
384 * e1000_release_hw_control - release control of the h/w to f/w
385 * @adapter: address of board private structure
387 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
388 * For ASF and Pass Through versions of f/w this means that the
389 * driver is no longer loaded. For AMT version (only with 82573) i
390 * of the f/w this means that the network i/f is closed.
395 e1000_release_hw_control(struct e1000_adapter
*adapter
)
401 /* Let firmware taken over control of h/w */
402 switch (adapter
->hw
.mac_type
) {
405 case e1000_80003es2lan
:
406 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
407 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
408 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
411 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
412 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
413 swsm
& ~E1000_SWSM_DRV_LOAD
);
415 extcnf
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
416 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
417 extcnf
& ~E1000_CTRL_EXT_DRV_LOAD
);
425 * e1000_get_hw_control - get control of the h/w from f/w
426 * @adapter: address of board private structure
428 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
429 * For ASF and Pass Through versions of f/w this means that
430 * the driver is loaded. For AMT version (only with 82573)
431 * of the f/w this means that the network i/f is open.
436 e1000_get_hw_control(struct e1000_adapter
*adapter
)
442 /* Let firmware know the driver has taken over */
443 switch (adapter
->hw
.mac_type
) {
446 case e1000_80003es2lan
:
447 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
448 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
449 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
452 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
453 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
454 swsm
| E1000_SWSM_DRV_LOAD
);
457 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
458 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
459 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
467 e1000_up(struct e1000_adapter
*adapter
)
469 struct net_device
*netdev
= adapter
->netdev
;
472 /* hardware has been reset, we need to reload some things */
474 e1000_set_multi(netdev
);
476 e1000_restore_vlan(adapter
);
478 e1000_configure_tx(adapter
);
479 e1000_setup_rctl(adapter
);
480 e1000_configure_rx(adapter
);
481 /* call E1000_DESC_UNUSED which always leaves
482 * at least 1 descriptor unused to make sure
483 * next_to_use != next_to_clean */
484 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
485 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
486 adapter
->alloc_rx_buf(adapter
, ring
,
487 E1000_DESC_UNUSED(ring
));
490 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
492 #ifdef CONFIG_E1000_NAPI
493 netif_poll_enable(netdev
);
495 e1000_irq_enable(adapter
);
497 clear_bit(__E1000_DOWN
, &adapter
->flags
);
499 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
504 * e1000_power_up_phy - restore link in case the phy was powered down
505 * @adapter: address of board private structure
507 * The phy may be powered down to save power and turn off link when the
508 * driver is unloaded and wake on lan is not enabled (among others)
509 * *** this routine MUST be followed by a call to e1000_reset ***
513 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
515 uint16_t mii_reg
= 0;
517 /* Just clear the power down bit to wake the phy back up */
518 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
519 /* according to the manual, the phy will retain its
520 * settings across a power-down/up cycle */
521 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
522 mii_reg
&= ~MII_CR_POWER_DOWN
;
523 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
527 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
529 /* Power down the PHY so no link is implied when interface is down *
530 * The PHY cannot be powered down if any of the following is TRUE *
533 * (c) SoL/IDER session is active */
534 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
535 adapter
->hw
.media_type
== e1000_media_type_copper
) {
536 uint16_t mii_reg
= 0;
538 switch (adapter
->hw
.mac_type
) {
541 case e1000_82545_rev_3
:
543 case e1000_82546_rev_3
:
545 case e1000_82541_rev_2
:
547 case e1000_82547_rev_2
:
548 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
555 case e1000_80003es2lan
:
557 if (e1000_check_mng_mode(&adapter
->hw
) ||
558 e1000_check_phy_reset_block(&adapter
->hw
))
564 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
565 mii_reg
|= MII_CR_POWER_DOWN
;
566 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
574 e1000_down(struct e1000_adapter
*adapter
)
576 struct net_device
*netdev
= adapter
->netdev
;
578 /* signal that we're down so the interrupt handler does not
579 * reschedule our watchdog timer */
580 set_bit(__E1000_DOWN
, &adapter
->flags
);
582 e1000_irq_disable(adapter
);
584 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
585 del_timer_sync(&adapter
->watchdog_timer
);
586 del_timer_sync(&adapter
->phy_info_timer
);
588 #ifdef CONFIG_E1000_NAPI
589 netif_poll_disable(netdev
);
591 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
592 adapter
->link_speed
= 0;
593 adapter
->link_duplex
= 0;
594 netif_carrier_off(netdev
);
595 netif_stop_queue(netdev
);
597 e1000_reset(adapter
);
598 e1000_clean_all_tx_rings(adapter
);
599 e1000_clean_all_rx_rings(adapter
);
603 e1000_reinit_locked(struct e1000_adapter
*adapter
)
605 WARN_ON(in_interrupt());
606 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
610 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
614 e1000_reset(struct e1000_adapter
*adapter
)
617 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
619 /* Repartition Pba for greater than 9k mtu
620 * To take effect CTRL.RST is required.
623 switch (adapter
->hw
.mac_type
) {
625 case e1000_82547_rev_2
:
630 case e1000_80003es2lan
:
644 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
645 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
646 pba
-= 8; /* allocate more FIFO for Tx */
649 if (adapter
->hw
.mac_type
== e1000_82547
) {
650 adapter
->tx_fifo_head
= 0;
651 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
652 adapter
->tx_fifo_size
=
653 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
654 atomic_set(&adapter
->tx_fifo_stall
, 0);
657 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
659 /* flow control settings */
660 /* Set the FC high water mark to 90% of the FIFO size.
661 * Required to clear last 3 LSB */
662 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
663 /* We can't use 90% on small FIFOs because the remainder
664 * would be less than 1 full frame. In this case, we size
665 * it to allow at least a full frame above the high water
667 if (pba
< E1000_PBA_16K
)
668 fc_high_water_mark
= (pba
* 1024) - 1600;
670 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
671 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
672 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
673 adapter
->hw
.fc_pause_time
= 0xFFFF;
675 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
676 adapter
->hw
.fc_send_xon
= 1;
677 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
679 /* Allow time for pending master requests to run */
680 e1000_reset_hw(&adapter
->hw
);
681 if (adapter
->hw
.mac_type
>= e1000_82544
)
682 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
684 if (e1000_init_hw(&adapter
->hw
))
685 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
686 e1000_update_mng_vlan(adapter
);
687 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
688 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
690 e1000_reset_adaptive(&adapter
->hw
);
691 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
693 if (!adapter
->smart_power_down
&&
694 (adapter
->hw
.mac_type
== e1000_82571
||
695 adapter
->hw
.mac_type
== e1000_82572
)) {
696 uint16_t phy_data
= 0;
697 /* speed up time to link by disabling smart power down, ignore
698 * the return value of this function because there is nothing
699 * different we would do if it failed */
700 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
702 phy_data
&= ~IGP02E1000_PM_SPD
;
703 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
707 if ((adapter
->en_mng_pt
) &&
708 (adapter
->hw
.mac_type
>= e1000_82540
) &&
709 (adapter
->hw
.mac_type
< e1000_82571
) &&
710 (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
711 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
712 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
713 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
718 * e1000_probe - Device Initialization Routine
719 * @pdev: PCI device information struct
720 * @ent: entry in e1000_pci_tbl
722 * Returns 0 on success, negative on failure
724 * e1000_probe initializes an adapter identified by a pci_dev structure.
725 * The OS initialization, configuring of the adapter private structure,
726 * and a hardware reset occur.
730 e1000_probe(struct pci_dev
*pdev
,
731 const struct pci_device_id
*ent
)
733 struct net_device
*netdev
;
734 struct e1000_adapter
*adapter
;
735 unsigned long mmio_start
, mmio_len
;
736 unsigned long flash_start
, flash_len
;
738 static int cards_found
= 0;
739 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
740 int i
, err
, pci_using_dac
;
741 uint16_t eeprom_data
= 0;
742 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
743 if ((err
= pci_enable_device(pdev
)))
746 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
747 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
750 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
751 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
752 E1000_ERR("No usable DMA configuration, aborting\n");
758 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
761 pci_set_master(pdev
);
764 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
766 goto err_alloc_etherdev
;
768 SET_MODULE_OWNER(netdev
);
769 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
771 pci_set_drvdata(pdev
, netdev
);
772 adapter
= netdev_priv(netdev
);
773 adapter
->netdev
= netdev
;
774 adapter
->pdev
= pdev
;
775 adapter
->hw
.back
= adapter
;
776 adapter
->msg_enable
= (1 << debug
) - 1;
778 mmio_start
= pci_resource_start(pdev
, BAR_0
);
779 mmio_len
= pci_resource_len(pdev
, BAR_0
);
782 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
783 if (!adapter
->hw
.hw_addr
)
786 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
787 if (pci_resource_len(pdev
, i
) == 0)
789 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
790 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
795 netdev
->open
= &e1000_open
;
796 netdev
->stop
= &e1000_close
;
797 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
798 netdev
->get_stats
= &e1000_get_stats
;
799 netdev
->set_multicast_list
= &e1000_set_multi
;
800 netdev
->set_mac_address
= &e1000_set_mac
;
801 netdev
->change_mtu
= &e1000_change_mtu
;
802 netdev
->do_ioctl
= &e1000_ioctl
;
803 e1000_set_ethtool_ops(netdev
);
804 netdev
->tx_timeout
= &e1000_tx_timeout
;
805 netdev
->watchdog_timeo
= 5 * HZ
;
806 #ifdef CONFIG_E1000_NAPI
807 netdev
->poll
= &e1000_clean
;
810 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
811 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
812 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
813 #ifdef CONFIG_NET_POLL_CONTROLLER
814 netdev
->poll_controller
= e1000_netpoll
;
816 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
818 netdev
->mem_start
= mmio_start
;
819 netdev
->mem_end
= mmio_start
+ mmio_len
;
820 netdev
->base_addr
= adapter
->hw
.io_base
;
822 adapter
->bd_number
= cards_found
;
824 /* setup the private structure */
826 if ((err
= e1000_sw_init(adapter
)))
830 /* Flash BAR mapping must happen after e1000_sw_init
831 * because it depends on mac_type */
832 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
833 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
834 flash_start
= pci_resource_start(pdev
, 1);
835 flash_len
= pci_resource_len(pdev
, 1);
836 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
837 if (!adapter
->hw
.flash_address
)
841 if (e1000_check_phy_reset_block(&adapter
->hw
))
842 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
844 if (adapter
->hw
.mac_type
>= e1000_82543
) {
845 netdev
->features
= NETIF_F_SG
|
849 NETIF_F_HW_VLAN_FILTER
;
850 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
851 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
855 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
856 (adapter
->hw
.mac_type
!= e1000_82547
))
857 netdev
->features
|= NETIF_F_TSO
;
860 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
861 netdev
->features
|= NETIF_F_TSO6
;
865 netdev
->features
|= NETIF_F_HIGHDMA
;
867 netdev
->features
|= NETIF_F_LLTX
;
869 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
871 /* initialize eeprom parameters */
873 if (e1000_init_eeprom_params(&adapter
->hw
)) {
874 E1000_ERR("EEPROM initialization failed\n");
878 /* before reading the EEPROM, reset the controller to
879 * put the device in a known good starting state */
881 e1000_reset_hw(&adapter
->hw
);
883 /* make sure the EEPROM is good */
885 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
886 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
890 /* copy the MAC address out of the EEPROM */
892 if (e1000_read_mac_addr(&adapter
->hw
))
893 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
894 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
895 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
897 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
898 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
902 e1000_get_bus_info(&adapter
->hw
);
904 init_timer(&adapter
->tx_fifo_stall_timer
);
905 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
906 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
908 init_timer(&adapter
->watchdog_timer
);
909 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
910 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
912 init_timer(&adapter
->phy_info_timer
);
913 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
914 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
916 INIT_WORK(&adapter
->reset_task
,
917 (void (*)(void *))e1000_reset_task
, netdev
);
919 e1000_check_options(adapter
);
921 /* Initial Wake on LAN setting
922 * If APM wake is enabled in the EEPROM,
923 * enable the ACPI Magic Packet filter
926 switch (adapter
->hw
.mac_type
) {
927 case e1000_82542_rev2_0
:
928 case e1000_82542_rev2_1
:
932 e1000_read_eeprom(&adapter
->hw
,
933 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
934 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
937 e1000_read_eeprom(&adapter
->hw
,
938 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
939 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
942 case e1000_82546_rev_3
:
944 case e1000_80003es2lan
:
945 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
946 e1000_read_eeprom(&adapter
->hw
,
947 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
952 e1000_read_eeprom(&adapter
->hw
,
953 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
956 if (eeprom_data
& eeprom_apme_mask
)
957 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
959 /* now that we have the eeprom settings, apply the special cases
960 * where the eeprom may be wrong or the board simply won't support
961 * wake on lan on a particular port */
962 switch (pdev
->device
) {
963 case E1000_DEV_ID_82546GB_PCIE
:
964 adapter
->eeprom_wol
= 0;
966 case E1000_DEV_ID_82546EB_FIBER
:
967 case E1000_DEV_ID_82546GB_FIBER
:
968 case E1000_DEV_ID_82571EB_FIBER
:
969 /* Wake events only supported on port A for dual fiber
970 * regardless of eeprom setting */
971 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
972 adapter
->eeprom_wol
= 0;
974 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
975 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
976 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
977 /* if quad port adapter, disable WoL on all but port A */
978 if (global_quad_port_a
!= 0)
979 adapter
->eeprom_wol
= 0;
981 adapter
->quad_port_a
= 1;
982 /* Reset for multiple quad port adapters */
983 if (++global_quad_port_a
== 4)
984 global_quad_port_a
= 0;
988 /* initialize the wol settings based on the eeprom settings */
989 adapter
->wol
= adapter
->eeprom_wol
;
991 /* print bus type/speed/width info */
993 struct e1000_hw
*hw
= &adapter
->hw
;
994 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
995 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
996 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
997 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
998 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
999 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1000 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1001 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1002 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1003 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1004 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1008 for (i
= 0; i
< 6; i
++)
1009 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1011 /* reset the hardware with the new settings */
1012 e1000_reset(adapter
);
1014 /* If the controller is 82573 and f/w is AMT, do not set
1015 * DRV_LOAD until the interface is up. For all other cases,
1016 * let the f/w know that the h/w is now under the control
1018 if (adapter
->hw
.mac_type
!= e1000_82573
||
1019 !e1000_check_mng_mode(&adapter
->hw
))
1020 e1000_get_hw_control(adapter
);
1022 strcpy(netdev
->name
, "eth%d");
1023 if ((err
= register_netdev(netdev
)))
1026 /* tell the stack to leave us alone until e1000_open() is called */
1027 netif_carrier_off(netdev
);
1028 netif_stop_queue(netdev
);
1030 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1036 e1000_release_hw_control(adapter
);
1038 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1039 e1000_phy_hw_reset(&adapter
->hw
);
1041 if (adapter
->hw
.flash_address
)
1042 iounmap(adapter
->hw
.flash_address
);
1044 #ifdef CONFIG_E1000_NAPI
1045 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1046 dev_put(&adapter
->polling_netdev
[i
]);
1049 kfree(adapter
->tx_ring
);
1050 kfree(adapter
->rx_ring
);
1051 #ifdef CONFIG_E1000_NAPI
1052 kfree(adapter
->polling_netdev
);
1055 iounmap(adapter
->hw
.hw_addr
);
1057 free_netdev(netdev
);
1059 pci_release_regions(pdev
);
1062 pci_disable_device(pdev
);
1067 * e1000_remove - Device Removal Routine
1068 * @pdev: PCI device information struct
1070 * e1000_remove is called by the PCI subsystem to alert the driver
1071 * that it should release a PCI device. The could be caused by a
1072 * Hot-Plug event, or because the driver is going to be removed from
1076 static void __devexit
1077 e1000_remove(struct pci_dev
*pdev
)
1079 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1080 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1082 #ifdef CONFIG_E1000_NAPI
1086 flush_scheduled_work();
1088 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1089 adapter
->hw
.mac_type
< e1000_82571
&&
1090 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1091 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1092 if (manc
& E1000_MANC_SMBUS_EN
) {
1093 manc
|= E1000_MANC_ARP_EN
;
1094 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1098 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1099 * would have already happened in close and is redundant. */
1100 e1000_release_hw_control(adapter
);
1102 unregister_netdev(netdev
);
1103 #ifdef CONFIG_E1000_NAPI
1104 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1105 dev_put(&adapter
->polling_netdev
[i
]);
1108 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1109 e1000_phy_hw_reset(&adapter
->hw
);
1111 kfree(adapter
->tx_ring
);
1112 kfree(adapter
->rx_ring
);
1113 #ifdef CONFIG_E1000_NAPI
1114 kfree(adapter
->polling_netdev
);
1117 iounmap(adapter
->hw
.hw_addr
);
1118 if (adapter
->hw
.flash_address
)
1119 iounmap(adapter
->hw
.flash_address
);
1120 pci_release_regions(pdev
);
1122 free_netdev(netdev
);
1124 pci_disable_device(pdev
);
1128 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1129 * @adapter: board private structure to initialize
1131 * e1000_sw_init initializes the Adapter private data structure.
1132 * Fields are initialized based on PCI device information and
1133 * OS network device settings (MTU size).
1136 static int __devinit
1137 e1000_sw_init(struct e1000_adapter
*adapter
)
1139 struct e1000_hw
*hw
= &adapter
->hw
;
1140 struct net_device
*netdev
= adapter
->netdev
;
1141 struct pci_dev
*pdev
= adapter
->pdev
;
1142 #ifdef CONFIG_E1000_NAPI
1146 /* PCI config space info */
1148 hw
->vendor_id
= pdev
->vendor
;
1149 hw
->device_id
= pdev
->device
;
1150 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1151 hw
->subsystem_id
= pdev
->subsystem_device
;
1153 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1155 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1157 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1158 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1159 hw
->max_frame_size
= netdev
->mtu
+
1160 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1161 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1163 /* identify the MAC */
1165 if (e1000_set_mac_type(hw
)) {
1166 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1170 switch (hw
->mac_type
) {
1175 case e1000_82541_rev_2
:
1176 case e1000_82547_rev_2
:
1177 hw
->phy_init_script
= 1;
1181 e1000_set_media_type(hw
);
1183 hw
->wait_autoneg_complete
= FALSE
;
1184 hw
->tbi_compatibility_en
= TRUE
;
1185 hw
->adaptive_ifs
= TRUE
;
1187 /* Copper options */
1189 if (hw
->media_type
== e1000_media_type_copper
) {
1190 hw
->mdix
= AUTO_ALL_MODES
;
1191 hw
->disable_polarity_correction
= FALSE
;
1192 hw
->master_slave
= E1000_MASTER_SLAVE
;
1195 adapter
->num_tx_queues
= 1;
1196 adapter
->num_rx_queues
= 1;
1198 if (e1000_alloc_queues(adapter
)) {
1199 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1203 #ifdef CONFIG_E1000_NAPI
1204 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1205 adapter
->polling_netdev
[i
].priv
= adapter
;
1206 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1207 adapter
->polling_netdev
[i
].weight
= 64;
1208 dev_hold(&adapter
->polling_netdev
[i
]);
1209 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1211 spin_lock_init(&adapter
->tx_queue_lock
);
1214 atomic_set(&adapter
->irq_sem
, 1);
1215 spin_lock_init(&adapter
->stats_lock
);
1217 set_bit(__E1000_DOWN
, &adapter
->flags
);
1223 * e1000_alloc_queues - Allocate memory for all rings
1224 * @adapter: board private structure to initialize
1226 * We allocate one ring per queue at run-time since we don't know the
1227 * number of queues at compile-time. The polling_netdev array is
1228 * intended for Multiqueue, but should work fine with a single queue.
1231 static int __devinit
1232 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1236 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1237 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1238 if (!adapter
->tx_ring
)
1240 memset(adapter
->tx_ring
, 0, size
);
1242 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1243 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1244 if (!adapter
->rx_ring
) {
1245 kfree(adapter
->tx_ring
);
1248 memset(adapter
->rx_ring
, 0, size
);
1250 #ifdef CONFIG_E1000_NAPI
1251 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1252 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1253 if (!adapter
->polling_netdev
) {
1254 kfree(adapter
->tx_ring
);
1255 kfree(adapter
->rx_ring
);
1258 memset(adapter
->polling_netdev
, 0, size
);
1261 return E1000_SUCCESS
;
1265 * e1000_open - Called when a network interface is made active
1266 * @netdev: network interface device structure
1268 * Returns 0 on success, negative value on failure
1270 * The open entry point is called when a network interface is made
1271 * active by the system (IFF_UP). At this point all resources needed
1272 * for transmit and receive operations are allocated, the interrupt
1273 * handler is registered with the OS, the watchdog timer is started,
1274 * and the stack is notified that the interface is ready.
1278 e1000_open(struct net_device
*netdev
)
1280 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1283 /* disallow open during test */
1284 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1287 /* allocate transmit descriptors */
1288 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1291 /* allocate receive descriptors */
1292 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1295 err
= e1000_request_irq(adapter
);
1299 e1000_power_up_phy(adapter
);
1301 if ((err
= e1000_up(adapter
)))
1303 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1304 if ((adapter
->hw
.mng_cookie
.status
&
1305 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1306 e1000_update_mng_vlan(adapter
);
1309 /* If AMT is enabled, let the firmware know that the network
1310 * interface is now open */
1311 if (adapter
->hw
.mac_type
== e1000_82573
&&
1312 e1000_check_mng_mode(&adapter
->hw
))
1313 e1000_get_hw_control(adapter
);
1315 return E1000_SUCCESS
;
1318 e1000_power_down_phy(adapter
);
1319 e1000_free_irq(adapter
);
1321 e1000_free_all_rx_resources(adapter
);
1323 e1000_free_all_tx_resources(adapter
);
1325 e1000_reset(adapter
);
1331 * e1000_close - Disables a network interface
1332 * @netdev: network interface device structure
1334 * Returns 0, this is not allowed to fail
1336 * The close entry point is called when an interface is de-activated
1337 * by the OS. The hardware is still under the drivers control, but
1338 * needs to be disabled. A global MAC reset is issued to stop the
1339 * hardware, and all transmit and receive resources are freed.
1343 e1000_close(struct net_device
*netdev
)
1345 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1347 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1348 e1000_down(adapter
);
1349 e1000_power_down_phy(adapter
);
1350 e1000_free_irq(adapter
);
1352 e1000_free_all_tx_resources(adapter
);
1353 e1000_free_all_rx_resources(adapter
);
1355 /* kill manageability vlan ID if supported, but not if a vlan with
1356 * the same ID is registered on the host OS (let 8021q kill it) */
1357 if ((adapter
->hw
.mng_cookie
.status
&
1358 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1360 adapter
->vlgrp
->vlan_devices
[adapter
->mng_vlan_id
])) {
1361 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1364 /* If AMT is enabled, let the firmware know that the network
1365 * interface is now closed */
1366 if (adapter
->hw
.mac_type
== e1000_82573
&&
1367 e1000_check_mng_mode(&adapter
->hw
))
1368 e1000_release_hw_control(adapter
);
1374 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1375 * @adapter: address of board private structure
1376 * @start: address of beginning of memory
1377 * @len: length of memory
1380 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1381 void *start
, unsigned long len
)
1383 unsigned long begin
= (unsigned long) start
;
1384 unsigned long end
= begin
+ len
;
1386 /* First rev 82545 and 82546 need to not allow any memory
1387 * write location to cross 64k boundary due to errata 23 */
1388 if (adapter
->hw
.mac_type
== e1000_82545
||
1389 adapter
->hw
.mac_type
== e1000_82546
) {
1390 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1397 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1398 * @adapter: board private structure
1399 * @txdr: tx descriptor ring (for a specific queue) to setup
1401 * Return 0 on success, negative on failure
1405 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1406 struct e1000_tx_ring
*txdr
)
1408 struct pci_dev
*pdev
= adapter
->pdev
;
1411 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1412 txdr
->buffer_info
= vmalloc(size
);
1413 if (!txdr
->buffer_info
) {
1415 "Unable to allocate memory for the transmit descriptor ring\n");
1418 memset(txdr
->buffer_info
, 0, size
);
1420 /* round up to nearest 4K */
1422 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1423 E1000_ROUNDUP(txdr
->size
, 4096);
1425 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1428 vfree(txdr
->buffer_info
);
1430 "Unable to allocate memory for the transmit descriptor ring\n");
1434 /* Fix for errata 23, can't cross 64kB boundary */
1435 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1436 void *olddesc
= txdr
->desc
;
1437 dma_addr_t olddma
= txdr
->dma
;
1438 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1439 "at %p\n", txdr
->size
, txdr
->desc
);
1440 /* Try again, without freeing the previous */
1441 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1442 /* Failed allocation, critical failure */
1444 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1445 goto setup_tx_desc_die
;
1448 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1450 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1452 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1454 "Unable to allocate aligned memory "
1455 "for the transmit descriptor ring\n");
1456 vfree(txdr
->buffer_info
);
1459 /* Free old allocation, new allocation was successful */
1460 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1463 memset(txdr
->desc
, 0, txdr
->size
);
1465 txdr
->next_to_use
= 0;
1466 txdr
->next_to_clean
= 0;
1467 spin_lock_init(&txdr
->tx_lock
);
1473 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1474 * (Descriptors) for all queues
1475 * @adapter: board private structure
1477 * Return 0 on success, negative on failure
1481 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1485 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1486 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1489 "Allocation for Tx Queue %u failed\n", i
);
1490 for (i
-- ; i
>= 0; i
--)
1491 e1000_free_tx_resources(adapter
,
1492 &adapter
->tx_ring
[i
]);
1501 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1502 * @adapter: board private structure
1504 * Configure the Tx unit of the MAC after a reset.
1508 e1000_configure_tx(struct e1000_adapter
*adapter
)
1511 struct e1000_hw
*hw
= &adapter
->hw
;
1512 uint32_t tdlen
, tctl
, tipg
, tarc
;
1513 uint32_t ipgr1
, ipgr2
;
1515 /* Setup the HW Tx Head and Tail descriptor pointers */
1517 switch (adapter
->num_tx_queues
) {
1520 tdba
= adapter
->tx_ring
[0].dma
;
1521 tdlen
= adapter
->tx_ring
[0].count
*
1522 sizeof(struct e1000_tx_desc
);
1523 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1524 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1525 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1526 E1000_WRITE_REG(hw
, TDT
, 0);
1527 E1000_WRITE_REG(hw
, TDH
, 0);
1528 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1529 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1533 /* Set the default values for the Tx Inter Packet Gap timer */
1535 if (hw
->media_type
== e1000_media_type_fiber
||
1536 hw
->media_type
== e1000_media_type_internal_serdes
)
1537 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1539 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1541 switch (hw
->mac_type
) {
1542 case e1000_82542_rev2_0
:
1543 case e1000_82542_rev2_1
:
1544 tipg
= DEFAULT_82542_TIPG_IPGT
;
1545 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1546 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1548 case e1000_80003es2lan
:
1549 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1550 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1553 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1554 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1557 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1558 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1559 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1561 /* Set the Tx Interrupt Delay register */
1563 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1564 if (hw
->mac_type
>= e1000_82540
)
1565 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1567 /* Program the Transmit Control Register */
1569 tctl
= E1000_READ_REG(hw
, TCTL
);
1570 tctl
&= ~E1000_TCTL_CT
;
1571 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1572 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1574 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1575 tarc
= E1000_READ_REG(hw
, TARC0
);
1576 /* set the speed mode bit, we'll clear it if we're not at
1577 * gigabit link later */
1579 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1580 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1581 tarc
= E1000_READ_REG(hw
, TARC0
);
1583 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1584 tarc
= E1000_READ_REG(hw
, TARC1
);
1586 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1589 e1000_config_collision_dist(hw
);
1591 /* Setup Transmit Descriptor Settings for eop descriptor */
1592 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1594 /* only set IDE if we are delaying interrupts using the timers */
1595 if (adapter
->tx_int_delay
)
1596 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1598 if (hw
->mac_type
< e1000_82543
)
1599 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1601 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1603 /* Cache if we're 82544 running in PCI-X because we'll
1604 * need this to apply a workaround later in the send path. */
1605 if (hw
->mac_type
== e1000_82544
&&
1606 hw
->bus_type
== e1000_bus_type_pcix
)
1607 adapter
->pcix_82544
= 1;
1609 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1614 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1615 * @adapter: board private structure
1616 * @rxdr: rx descriptor ring (for a specific queue) to setup
1618 * Returns 0 on success, negative on failure
1622 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1623 struct e1000_rx_ring
*rxdr
)
1625 struct pci_dev
*pdev
= adapter
->pdev
;
1628 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1629 rxdr
->buffer_info
= vmalloc(size
);
1630 if (!rxdr
->buffer_info
) {
1632 "Unable to allocate memory for the receive descriptor ring\n");
1635 memset(rxdr
->buffer_info
, 0, size
);
1637 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1638 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1639 if (!rxdr
->ps_page
) {
1640 vfree(rxdr
->buffer_info
);
1642 "Unable to allocate memory for the receive descriptor ring\n");
1645 memset(rxdr
->ps_page
, 0, size
);
1647 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1648 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1649 if (!rxdr
->ps_page_dma
) {
1650 vfree(rxdr
->buffer_info
);
1651 kfree(rxdr
->ps_page
);
1653 "Unable to allocate memory for the receive descriptor ring\n");
1656 memset(rxdr
->ps_page_dma
, 0, size
);
1658 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1659 desc_len
= sizeof(struct e1000_rx_desc
);
1661 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1663 /* Round up to nearest 4K */
1665 rxdr
->size
= rxdr
->count
* desc_len
;
1666 E1000_ROUNDUP(rxdr
->size
, 4096);
1668 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1672 "Unable to allocate memory for the receive descriptor ring\n");
1674 vfree(rxdr
->buffer_info
);
1675 kfree(rxdr
->ps_page
);
1676 kfree(rxdr
->ps_page_dma
);
1680 /* Fix for errata 23, can't cross 64kB boundary */
1681 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1682 void *olddesc
= rxdr
->desc
;
1683 dma_addr_t olddma
= rxdr
->dma
;
1684 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1685 "at %p\n", rxdr
->size
, rxdr
->desc
);
1686 /* Try again, without freeing the previous */
1687 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1688 /* Failed allocation, critical failure */
1690 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1692 "Unable to allocate memory "
1693 "for the receive descriptor ring\n");
1694 goto setup_rx_desc_die
;
1697 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1699 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1701 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1703 "Unable to allocate aligned memory "
1704 "for the receive descriptor ring\n");
1705 goto setup_rx_desc_die
;
1707 /* Free old allocation, new allocation was successful */
1708 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1711 memset(rxdr
->desc
, 0, rxdr
->size
);
1713 rxdr
->next_to_clean
= 0;
1714 rxdr
->next_to_use
= 0;
1720 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1721 * (Descriptors) for all queues
1722 * @adapter: board private structure
1724 * Return 0 on success, negative on failure
1728 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1732 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1733 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1736 "Allocation for Rx Queue %u failed\n", i
);
1737 for (i
-- ; i
>= 0; i
--)
1738 e1000_free_rx_resources(adapter
,
1739 &adapter
->rx_ring
[i
]);
1748 * e1000_setup_rctl - configure the receive control registers
1749 * @adapter: Board private structure
1751 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1752 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1754 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1756 uint32_t rctl
, rfctl
;
1757 uint32_t psrctl
= 0;
1758 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1762 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1764 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1766 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1767 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1768 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1770 if (adapter
->hw
.tbi_compatibility_on
== 1)
1771 rctl
|= E1000_RCTL_SBP
;
1773 rctl
&= ~E1000_RCTL_SBP
;
1775 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1776 rctl
&= ~E1000_RCTL_LPE
;
1778 rctl
|= E1000_RCTL_LPE
;
1780 /* Setup buffer sizes */
1781 rctl
&= ~E1000_RCTL_SZ_4096
;
1782 rctl
|= E1000_RCTL_BSEX
;
1783 switch (adapter
->rx_buffer_len
) {
1784 case E1000_RXBUFFER_256
:
1785 rctl
|= E1000_RCTL_SZ_256
;
1786 rctl
&= ~E1000_RCTL_BSEX
;
1788 case E1000_RXBUFFER_512
:
1789 rctl
|= E1000_RCTL_SZ_512
;
1790 rctl
&= ~E1000_RCTL_BSEX
;
1792 case E1000_RXBUFFER_1024
:
1793 rctl
|= E1000_RCTL_SZ_1024
;
1794 rctl
&= ~E1000_RCTL_BSEX
;
1796 case E1000_RXBUFFER_2048
:
1798 rctl
|= E1000_RCTL_SZ_2048
;
1799 rctl
&= ~E1000_RCTL_BSEX
;
1801 case E1000_RXBUFFER_4096
:
1802 rctl
|= E1000_RCTL_SZ_4096
;
1804 case E1000_RXBUFFER_8192
:
1805 rctl
|= E1000_RCTL_SZ_8192
;
1807 case E1000_RXBUFFER_16384
:
1808 rctl
|= E1000_RCTL_SZ_16384
;
1812 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1813 /* 82571 and greater support packet-split where the protocol
1814 * header is placed in skb->data and the packet data is
1815 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1816 * In the case of a non-split, skb->data is linearly filled,
1817 * followed by the page buffers. Therefore, skb->data is
1818 * sized to hold the largest protocol header.
1820 /* allocations using alloc_page take too long for regular MTU
1821 * so only enable packet split for jumbo frames */
1822 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1823 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1824 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1825 adapter
->rx_ps_pages
= pages
;
1827 adapter
->rx_ps_pages
= 0;
1829 if (adapter
->rx_ps_pages
) {
1830 /* Configure extra packet-split registers */
1831 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1832 rfctl
|= E1000_RFCTL_EXTEN
;
1833 /* disable packet split support for IPv6 extension headers,
1834 * because some malformed IPv6 headers can hang the RX */
1835 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
1836 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
1838 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1840 rctl
|= E1000_RCTL_DTYP_PS
;
1842 psrctl
|= adapter
->rx_ps_bsize0
>>
1843 E1000_PSRCTL_BSIZE0_SHIFT
;
1845 switch (adapter
->rx_ps_pages
) {
1847 psrctl
|= PAGE_SIZE
<<
1848 E1000_PSRCTL_BSIZE3_SHIFT
;
1850 psrctl
|= PAGE_SIZE
<<
1851 E1000_PSRCTL_BSIZE2_SHIFT
;
1853 psrctl
|= PAGE_SIZE
>>
1854 E1000_PSRCTL_BSIZE1_SHIFT
;
1858 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1861 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1865 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1866 * @adapter: board private structure
1868 * Configure the Rx unit of the MAC after a reset.
1872 e1000_configure_rx(struct e1000_adapter
*adapter
)
1875 struct e1000_hw
*hw
= &adapter
->hw
;
1876 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1878 if (adapter
->rx_ps_pages
) {
1879 /* this is a 32 byte descriptor */
1880 rdlen
= adapter
->rx_ring
[0].count
*
1881 sizeof(union e1000_rx_desc_packet_split
);
1882 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1883 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1885 rdlen
= adapter
->rx_ring
[0].count
*
1886 sizeof(struct e1000_rx_desc
);
1887 adapter
->clean_rx
= e1000_clean_rx_irq
;
1888 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1891 /* disable receives while setting up the descriptors */
1892 rctl
= E1000_READ_REG(hw
, RCTL
);
1893 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1895 /* set the Receive Delay Timer Register */
1896 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1898 if (hw
->mac_type
>= e1000_82540
) {
1899 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1900 if (adapter
->itr_setting
!= 0)
1901 E1000_WRITE_REG(hw
, ITR
,
1902 1000000000 / (adapter
->itr
* 256));
1905 if (hw
->mac_type
>= e1000_82571
) {
1906 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1907 /* Reset delay timers after every interrupt */
1908 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1909 #ifdef CONFIG_E1000_NAPI
1910 /* Auto-Mask interrupts upon ICR access */
1911 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1912 E1000_WRITE_REG(hw
, IAM
, 0xffffffff);
1914 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1915 E1000_WRITE_FLUSH(hw
);
1918 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1919 * the Base and Length of the Rx Descriptor Ring */
1920 switch (adapter
->num_rx_queues
) {
1923 rdba
= adapter
->rx_ring
[0].dma
;
1924 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1925 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1926 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1927 E1000_WRITE_REG(hw
, RDT
, 0);
1928 E1000_WRITE_REG(hw
, RDH
, 0);
1929 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1930 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1934 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1935 if (hw
->mac_type
>= e1000_82543
) {
1936 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1937 if (adapter
->rx_csum
== TRUE
) {
1938 rxcsum
|= E1000_RXCSUM_TUOFL
;
1940 /* Enable 82571 IPv4 payload checksum for UDP fragments
1941 * Must be used in conjunction with packet-split. */
1942 if ((hw
->mac_type
>= e1000_82571
) &&
1943 (adapter
->rx_ps_pages
)) {
1944 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1947 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1948 /* don't need to clear IPPCSE as it defaults to 0 */
1950 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1953 /* enable early receives on 82573, only takes effect if using > 2048
1954 * byte total frame size. for example only for jumbo frames */
1955 #define E1000_ERT_2048 0x100
1956 if (hw
->mac_type
== e1000_82573
)
1957 E1000_WRITE_REG(hw
, ERT
, E1000_ERT_2048
);
1959 /* Enable Receives */
1960 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1964 * e1000_free_tx_resources - Free Tx Resources per Queue
1965 * @adapter: board private structure
1966 * @tx_ring: Tx descriptor ring for a specific queue
1968 * Free all transmit software resources
1972 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1973 struct e1000_tx_ring
*tx_ring
)
1975 struct pci_dev
*pdev
= adapter
->pdev
;
1977 e1000_clean_tx_ring(adapter
, tx_ring
);
1979 vfree(tx_ring
->buffer_info
);
1980 tx_ring
->buffer_info
= NULL
;
1982 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1984 tx_ring
->desc
= NULL
;
1988 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1989 * @adapter: board private structure
1991 * Free all transmit software resources
1995 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1999 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2000 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2004 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2005 struct e1000_buffer
*buffer_info
)
2007 if (buffer_info
->dma
) {
2008 pci_unmap_page(adapter
->pdev
,
2010 buffer_info
->length
,
2012 buffer_info
->dma
= 0;
2014 if (buffer_info
->skb
) {
2015 dev_kfree_skb_any(buffer_info
->skb
);
2016 buffer_info
->skb
= NULL
;
2018 /* buffer_info must be completely set up in the transmit path */
2022 * e1000_clean_tx_ring - Free Tx Buffers
2023 * @adapter: board private structure
2024 * @tx_ring: ring to be cleaned
2028 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2029 struct e1000_tx_ring
*tx_ring
)
2031 struct e1000_buffer
*buffer_info
;
2035 /* Free all the Tx ring sk_buffs */
2037 for (i
= 0; i
< tx_ring
->count
; i
++) {
2038 buffer_info
= &tx_ring
->buffer_info
[i
];
2039 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2042 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2043 memset(tx_ring
->buffer_info
, 0, size
);
2045 /* Zero out the descriptor ring */
2047 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2049 tx_ring
->next_to_use
= 0;
2050 tx_ring
->next_to_clean
= 0;
2051 tx_ring
->last_tx_tso
= 0;
2053 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2054 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2058 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2059 * @adapter: board private structure
2063 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2067 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2068 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2072 * e1000_free_rx_resources - Free Rx Resources
2073 * @adapter: board private structure
2074 * @rx_ring: ring to clean the resources from
2076 * Free all receive software resources
2080 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2081 struct e1000_rx_ring
*rx_ring
)
2083 struct pci_dev
*pdev
= adapter
->pdev
;
2085 e1000_clean_rx_ring(adapter
, rx_ring
);
2087 vfree(rx_ring
->buffer_info
);
2088 rx_ring
->buffer_info
= NULL
;
2089 kfree(rx_ring
->ps_page
);
2090 rx_ring
->ps_page
= NULL
;
2091 kfree(rx_ring
->ps_page_dma
);
2092 rx_ring
->ps_page_dma
= NULL
;
2094 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2096 rx_ring
->desc
= NULL
;
2100 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2101 * @adapter: board private structure
2103 * Free all receive software resources
2107 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2111 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2112 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2116 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2117 * @adapter: board private structure
2118 * @rx_ring: ring to free buffers from
2122 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2123 struct e1000_rx_ring
*rx_ring
)
2125 struct e1000_buffer
*buffer_info
;
2126 struct e1000_ps_page
*ps_page
;
2127 struct e1000_ps_page_dma
*ps_page_dma
;
2128 struct pci_dev
*pdev
= adapter
->pdev
;
2132 /* Free all the Rx ring sk_buffs */
2133 for (i
= 0; i
< rx_ring
->count
; i
++) {
2134 buffer_info
= &rx_ring
->buffer_info
[i
];
2135 if (buffer_info
->skb
) {
2136 pci_unmap_single(pdev
,
2138 buffer_info
->length
,
2139 PCI_DMA_FROMDEVICE
);
2141 dev_kfree_skb(buffer_info
->skb
);
2142 buffer_info
->skb
= NULL
;
2144 ps_page
= &rx_ring
->ps_page
[i
];
2145 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2146 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2147 if (!ps_page
->ps_page
[j
]) break;
2148 pci_unmap_page(pdev
,
2149 ps_page_dma
->ps_page_dma
[j
],
2150 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2151 ps_page_dma
->ps_page_dma
[j
] = 0;
2152 put_page(ps_page
->ps_page
[j
]);
2153 ps_page
->ps_page
[j
] = NULL
;
2157 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2158 memset(rx_ring
->buffer_info
, 0, size
);
2159 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2160 memset(rx_ring
->ps_page
, 0, size
);
2161 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2162 memset(rx_ring
->ps_page_dma
, 0, size
);
2164 /* Zero out the descriptor ring */
2166 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2168 rx_ring
->next_to_clean
= 0;
2169 rx_ring
->next_to_use
= 0;
2171 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2172 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2176 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2177 * @adapter: board private structure
2181 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2185 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2186 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2189 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2190 * and memory write and invalidate disabled for certain operations
2193 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2195 struct net_device
*netdev
= adapter
->netdev
;
2198 e1000_pci_clear_mwi(&adapter
->hw
);
2200 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2201 rctl
|= E1000_RCTL_RST
;
2202 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2203 E1000_WRITE_FLUSH(&adapter
->hw
);
2206 if (netif_running(netdev
))
2207 e1000_clean_all_rx_rings(adapter
);
2211 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2213 struct net_device
*netdev
= adapter
->netdev
;
2216 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2217 rctl
&= ~E1000_RCTL_RST
;
2218 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2219 E1000_WRITE_FLUSH(&adapter
->hw
);
2222 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2223 e1000_pci_set_mwi(&adapter
->hw
);
2225 if (netif_running(netdev
)) {
2226 /* No need to loop, because 82542 supports only 1 queue */
2227 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2228 e1000_configure_rx(adapter
);
2229 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2234 * e1000_set_mac - Change the Ethernet Address of the NIC
2235 * @netdev: network interface device structure
2236 * @p: pointer to an address structure
2238 * Returns 0 on success, negative on failure
2242 e1000_set_mac(struct net_device
*netdev
, void *p
)
2244 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2245 struct sockaddr
*addr
= p
;
2247 if (!is_valid_ether_addr(addr
->sa_data
))
2248 return -EADDRNOTAVAIL
;
2250 /* 82542 2.0 needs to be in reset to write receive address registers */
2252 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2253 e1000_enter_82542_rst(adapter
);
2255 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2256 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2258 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2260 /* With 82571 controllers, LAA may be overwritten (with the default)
2261 * due to controller reset from the other port. */
2262 if (adapter
->hw
.mac_type
== e1000_82571
) {
2263 /* activate the work around */
2264 adapter
->hw
.laa_is_present
= 1;
2266 /* Hold a copy of the LAA in RAR[14] This is done so that
2267 * between the time RAR[0] gets clobbered and the time it
2268 * gets fixed (in e1000_watchdog), the actual LAA is in one
2269 * of the RARs and no incoming packets directed to this port
2270 * are dropped. Eventaully the LAA will be in RAR[0] and
2272 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2273 E1000_RAR_ENTRIES
- 1);
2276 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2277 e1000_leave_82542_rst(adapter
);
2283 * e1000_set_multi - Multicast and Promiscuous mode set
2284 * @netdev: network interface device structure
2286 * The set_multi entry point is called whenever the multicast address
2287 * list or the network interface flags are updated. This routine is
2288 * responsible for configuring the hardware for proper multicast,
2289 * promiscuous mode, and all-multi behavior.
2293 e1000_set_multi(struct net_device
*netdev
)
2295 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2296 struct e1000_hw
*hw
= &adapter
->hw
;
2297 struct dev_mc_list
*mc_ptr
;
2299 uint32_t hash_value
;
2300 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2301 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2302 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2303 E1000_NUM_MTA_REGISTERS
;
2305 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2306 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2308 /* reserve RAR[14] for LAA over-write work-around */
2309 if (adapter
->hw
.mac_type
== e1000_82571
)
2312 /* Check for Promiscuous and All Multicast modes */
2314 rctl
= E1000_READ_REG(hw
, RCTL
);
2316 if (netdev
->flags
& IFF_PROMISC
) {
2317 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2318 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2319 rctl
|= E1000_RCTL_MPE
;
2320 rctl
&= ~E1000_RCTL_UPE
;
2322 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2325 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2327 /* 82542 2.0 needs to be in reset to write receive address registers */
2329 if (hw
->mac_type
== e1000_82542_rev2_0
)
2330 e1000_enter_82542_rst(adapter
);
2332 /* load the first 14 multicast address into the exact filters 1-14
2333 * RAR 0 is used for the station MAC adddress
2334 * if there are not 14 addresses, go ahead and clear the filters
2335 * -- with 82571 controllers only 0-13 entries are filled here
2337 mc_ptr
= netdev
->mc_list
;
2339 for (i
= 1; i
< rar_entries
; i
++) {
2341 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2342 mc_ptr
= mc_ptr
->next
;
2344 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2345 E1000_WRITE_FLUSH(hw
);
2346 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2347 E1000_WRITE_FLUSH(hw
);
2351 /* clear the old settings from the multicast hash table */
2353 for (i
= 0; i
< mta_reg_count
; i
++) {
2354 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2355 E1000_WRITE_FLUSH(hw
);
2358 /* load any remaining addresses into the hash table */
2360 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2361 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2362 e1000_mta_set(hw
, hash_value
);
2365 if (hw
->mac_type
== e1000_82542_rev2_0
)
2366 e1000_leave_82542_rst(adapter
);
2369 /* Need to wait a few seconds after link up to get diagnostic information from
2373 e1000_update_phy_info(unsigned long data
)
2375 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2376 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2380 * e1000_82547_tx_fifo_stall - Timer Call-back
2381 * @data: pointer to adapter cast into an unsigned long
2385 e1000_82547_tx_fifo_stall(unsigned long data
)
2387 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2388 struct net_device
*netdev
= adapter
->netdev
;
2391 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2392 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2393 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2394 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2395 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2396 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2397 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2398 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2399 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2400 tctl
& ~E1000_TCTL_EN
);
2401 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2402 adapter
->tx_head_addr
);
2403 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2404 adapter
->tx_head_addr
);
2405 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2406 adapter
->tx_head_addr
);
2407 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2408 adapter
->tx_head_addr
);
2409 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2410 E1000_WRITE_FLUSH(&adapter
->hw
);
2412 adapter
->tx_fifo_head
= 0;
2413 atomic_set(&adapter
->tx_fifo_stall
, 0);
2414 netif_wake_queue(netdev
);
2416 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2422 * e1000_watchdog - Timer Call-back
2423 * @data: pointer to adapter cast into an unsigned long
2426 e1000_watchdog(unsigned long data
)
2428 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2429 struct net_device
*netdev
= adapter
->netdev
;
2430 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2431 uint32_t link
, tctl
;
2434 ret_val
= e1000_check_for_link(&adapter
->hw
);
2435 if ((ret_val
== E1000_ERR_PHY
) &&
2436 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2437 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2438 /* See e1000_kumeran_lock_loss_workaround() */
2440 "Gigabit has been disabled, downgrading speed\n");
2443 if (adapter
->hw
.mac_type
== e1000_82573
) {
2444 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2445 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2446 e1000_update_mng_vlan(adapter
);
2449 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2450 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2451 link
= !adapter
->hw
.serdes_link_down
;
2453 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2456 if (!netif_carrier_ok(netdev
)) {
2457 boolean_t txb2b
= 1;
2458 e1000_get_speed_and_duplex(&adapter
->hw
,
2459 &adapter
->link_speed
,
2460 &adapter
->link_duplex
);
2462 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2463 adapter
->link_speed
,
2464 adapter
->link_duplex
== FULL_DUPLEX
?
2465 "Full Duplex" : "Half Duplex");
2467 /* tweak tx_queue_len according to speed/duplex
2468 * and adjust the timeout factor */
2469 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2470 adapter
->tx_timeout_factor
= 1;
2471 switch (adapter
->link_speed
) {
2474 netdev
->tx_queue_len
= 10;
2475 adapter
->tx_timeout_factor
= 8;
2479 netdev
->tx_queue_len
= 100;
2480 /* maybe add some timeout factor ? */
2484 if ((adapter
->hw
.mac_type
== e1000_82571
||
2485 adapter
->hw
.mac_type
== e1000_82572
) &&
2488 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2489 tarc0
&= ~(1 << 21);
2490 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2494 /* disable TSO for pcie and 10/100 speeds, to avoid
2495 * some hardware issues */
2496 if (!adapter
->tso_force
&&
2497 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2498 switch (adapter
->link_speed
) {
2502 "10/100 speed: disabling TSO\n");
2503 netdev
->features
&= ~NETIF_F_TSO
;
2505 netdev
->features
&= ~NETIF_F_TSO6
;
2509 netdev
->features
|= NETIF_F_TSO
;
2511 netdev
->features
|= NETIF_F_TSO6
;
2521 /* enable transmits in the hardware, need to do this
2522 * after setting TARC0 */
2523 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2524 tctl
|= E1000_TCTL_EN
;
2525 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2527 netif_carrier_on(netdev
);
2528 netif_wake_queue(netdev
);
2529 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2530 adapter
->smartspeed
= 0;
2533 if (netif_carrier_ok(netdev
)) {
2534 adapter
->link_speed
= 0;
2535 adapter
->link_duplex
= 0;
2536 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2537 netif_carrier_off(netdev
);
2538 netif_stop_queue(netdev
);
2539 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2541 /* 80003ES2LAN workaround--
2542 * For packet buffer work-around on link down event;
2543 * disable receives in the ISR and
2544 * reset device here in the watchdog
2546 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2548 schedule_work(&adapter
->reset_task
);
2551 e1000_smartspeed(adapter
);
2554 e1000_update_stats(adapter
);
2556 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2557 adapter
->tpt_old
= adapter
->stats
.tpt
;
2558 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2559 adapter
->colc_old
= adapter
->stats
.colc
;
2561 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2562 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2563 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2564 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2566 e1000_update_adaptive(&adapter
->hw
);
2568 if (!netif_carrier_ok(netdev
)) {
2569 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2570 /* We've lost link, so the controller stops DMA,
2571 * but we've got queued Tx work that's never going
2572 * to get done, so reset controller to flush Tx.
2573 * (Do the reset outside of interrupt context). */
2574 adapter
->tx_timeout_count
++;
2575 schedule_work(&adapter
->reset_task
);
2579 /* Cause software interrupt to ensure rx ring is cleaned */
2580 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2582 /* Force detection of hung controller every watchdog period */
2583 adapter
->detect_tx_hung
= TRUE
;
2585 /* With 82571 controllers, LAA may be overwritten due to controller
2586 * reset from the other port. Set the appropriate LAA in RAR[0] */
2587 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2588 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2590 /* Reset the timer */
2591 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2594 enum latency_range
{
2598 latency_invalid
= 255
2602 * e1000_update_itr - update the dynamic ITR value based on statistics
2603 * Stores a new ITR value based on packets and byte
2604 * counts during the last interrupt. The advantage of per interrupt
2605 * computation is faster updates and more accurate ITR for the current
2606 * traffic pattern. Constants in this function were computed
2607 * based on theoretical maximum wire speed and thresholds were set based
2608 * on testing data as well as attempting to minimize response time
2609 * while increasing bulk throughput.
2610 * this functionality is controlled by the InterruptThrottleRate module
2611 * parameter (see e1000_param.c)
2612 * @adapter: pointer to adapter
2613 * @itr_setting: current adapter->itr
2614 * @packets: the number of packets during this measurement interval
2615 * @bytes: the number of bytes during this measurement interval
2617 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2618 uint16_t itr_setting
,
2622 unsigned int retval
= itr_setting
;
2623 struct e1000_hw
*hw
= &adapter
->hw
;
2625 if (unlikely(hw
->mac_type
< e1000_82540
))
2626 goto update_itr_done
;
2629 goto update_itr_done
;
2632 switch (itr_setting
) {
2633 case lowest_latency
:
2634 if ((packets
< 5) && (bytes
> 512))
2635 retval
= low_latency
;
2637 case low_latency
: /* 50 usec aka 20000 ints/s */
2638 if (bytes
> 10000) {
2639 if ((packets
< 10) ||
2640 ((bytes
/packets
) > 1200))
2641 retval
= bulk_latency
;
2642 else if ((packets
> 35))
2643 retval
= lowest_latency
;
2644 } else if (packets
<= 2 && bytes
< 512)
2645 retval
= lowest_latency
;
2647 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2648 if (bytes
> 25000) {
2650 retval
= low_latency
;
2653 retval
= low_latency
;
2662 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2664 struct e1000_hw
*hw
= &adapter
->hw
;
2665 uint16_t current_itr
;
2666 uint32_t new_itr
= adapter
->itr
;
2668 if (unlikely(hw
->mac_type
< e1000_82540
))
2671 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2672 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2678 adapter
->tx_itr
= e1000_update_itr(adapter
,
2680 adapter
->total_tx_packets
,
2681 adapter
->total_tx_bytes
);
2682 adapter
->rx_itr
= e1000_update_itr(adapter
,
2684 adapter
->total_rx_packets
,
2685 adapter
->total_rx_bytes
);
2687 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2689 /* conservative mode eliminates the lowest_latency setting */
2690 if (current_itr
== lowest_latency
&& (adapter
->itr_setting
== 3))
2691 current_itr
= low_latency
;
2693 switch (current_itr
) {
2694 /* counts and packets in update_itr are dependent on these numbers */
2695 case lowest_latency
:
2699 new_itr
= 20000; /* aka hwitr = ~200 */
2709 if (new_itr
!= adapter
->itr
) {
2710 /* this attempts to bias the interrupt rate towards Bulk
2711 * by adding intermediate steps when interrupt rate is
2713 new_itr
= new_itr
> adapter
->itr
?
2714 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2716 adapter
->itr
= new_itr
;
2717 E1000_WRITE_REG(hw
, ITR
, 1000000000 / (new_itr
* 256));
2723 #define E1000_TX_FLAGS_CSUM 0x00000001
2724 #define E1000_TX_FLAGS_VLAN 0x00000002
2725 #define E1000_TX_FLAGS_TSO 0x00000004
2726 #define E1000_TX_FLAGS_IPV4 0x00000008
2727 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2728 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2731 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2732 struct sk_buff
*skb
)
2735 struct e1000_context_desc
*context_desc
;
2736 struct e1000_buffer
*buffer_info
;
2738 uint32_t cmd_length
= 0;
2739 uint16_t ipcse
= 0, tucse
, mss
;
2740 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2743 if (skb_is_gso(skb
)) {
2744 if (skb_header_cloned(skb
)) {
2745 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2750 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2751 mss
= skb_shinfo(skb
)->gso_size
;
2752 if (skb
->protocol
== htons(ETH_P_IP
)) {
2753 skb
->nh
.iph
->tot_len
= 0;
2754 skb
->nh
.iph
->check
= 0;
2756 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2761 cmd_length
= E1000_TXD_CMD_IP
;
2762 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2764 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2765 skb
->nh
.ipv6h
->payload_len
= 0;
2767 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2768 &skb
->nh
.ipv6h
->daddr
,
2775 ipcss
= skb
->nh
.raw
- skb
->data
;
2776 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2777 tucss
= skb
->h
.raw
- skb
->data
;
2778 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2781 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2782 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2784 i
= tx_ring
->next_to_use
;
2785 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2786 buffer_info
= &tx_ring
->buffer_info
[i
];
2788 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2789 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2790 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2791 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2792 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2793 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2794 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2795 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2796 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2798 buffer_info
->time_stamp
= jiffies
;
2799 buffer_info
->next_to_watch
= i
;
2801 if (++i
== tx_ring
->count
) i
= 0;
2802 tx_ring
->next_to_use
= i
;
2812 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2813 struct sk_buff
*skb
)
2815 struct e1000_context_desc
*context_desc
;
2816 struct e1000_buffer
*buffer_info
;
2820 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2821 css
= skb
->h
.raw
- skb
->data
;
2823 i
= tx_ring
->next_to_use
;
2824 buffer_info
= &tx_ring
->buffer_info
[i
];
2825 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2827 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2828 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2829 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2830 context_desc
->tcp_seg_setup
.data
= 0;
2831 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2833 buffer_info
->time_stamp
= jiffies
;
2834 buffer_info
->next_to_watch
= i
;
2836 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2837 tx_ring
->next_to_use
= i
;
2845 #define E1000_MAX_TXD_PWR 12
2846 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2849 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2850 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2851 unsigned int nr_frags
, unsigned int mss
)
2853 struct e1000_buffer
*buffer_info
;
2854 unsigned int len
= skb
->len
;
2855 unsigned int offset
= 0, size
, count
= 0, i
;
2857 len
-= skb
->data_len
;
2859 i
= tx_ring
->next_to_use
;
2862 buffer_info
= &tx_ring
->buffer_info
[i
];
2863 size
= min(len
, max_per_txd
);
2865 /* Workaround for Controller erratum --
2866 * descriptor for non-tso packet in a linear SKB that follows a
2867 * tso gets written back prematurely before the data is fully
2868 * DMA'd to the controller */
2869 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2871 tx_ring
->last_tx_tso
= 0;
2875 /* Workaround for premature desc write-backs
2876 * in TSO mode. Append 4-byte sentinel desc */
2877 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2880 /* work-around for errata 10 and it applies
2881 * to all controllers in PCI-X mode
2882 * The fix is to make sure that the first descriptor of a
2883 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2885 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2886 (size
> 2015) && count
== 0))
2889 /* Workaround for potential 82544 hang in PCI-X. Avoid
2890 * terminating buffers within evenly-aligned dwords. */
2891 if (unlikely(adapter
->pcix_82544
&&
2892 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2896 buffer_info
->length
= size
;
2898 pci_map_single(adapter
->pdev
,
2902 buffer_info
->time_stamp
= jiffies
;
2903 buffer_info
->next_to_watch
= i
;
2908 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2911 for (f
= 0; f
< nr_frags
; f
++) {
2912 struct skb_frag_struct
*frag
;
2914 frag
= &skb_shinfo(skb
)->frags
[f
];
2916 offset
= frag
->page_offset
;
2919 buffer_info
= &tx_ring
->buffer_info
[i
];
2920 size
= min(len
, max_per_txd
);
2922 /* Workaround for premature desc write-backs
2923 * in TSO mode. Append 4-byte sentinel desc */
2924 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2927 /* Workaround for potential 82544 hang in PCI-X.
2928 * Avoid terminating buffers within evenly-aligned
2930 if (unlikely(adapter
->pcix_82544
&&
2931 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2935 buffer_info
->length
= size
;
2937 pci_map_page(adapter
->pdev
,
2942 buffer_info
->time_stamp
= jiffies
;
2943 buffer_info
->next_to_watch
= i
;
2948 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2952 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2953 tx_ring
->buffer_info
[i
].skb
= skb
;
2954 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2960 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2961 int tx_flags
, int count
)
2963 struct e1000_tx_desc
*tx_desc
= NULL
;
2964 struct e1000_buffer
*buffer_info
;
2965 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2968 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2969 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2971 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2973 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2974 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2977 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2978 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2979 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2982 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2983 txd_lower
|= E1000_TXD_CMD_VLE
;
2984 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2987 i
= tx_ring
->next_to_use
;
2990 buffer_info
= &tx_ring
->buffer_info
[i
];
2991 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2992 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2993 tx_desc
->lower
.data
=
2994 cpu_to_le32(txd_lower
| buffer_info
->length
);
2995 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2996 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2999 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3001 /* Force memory writes to complete before letting h/w
3002 * know there are new descriptors to fetch. (Only
3003 * applicable for weak-ordered memory model archs,
3004 * such as IA-64). */
3007 tx_ring
->next_to_use
= i
;
3008 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
3009 /* we need this if more than one processor can write to our tail
3010 * at a time, it syncronizes IO on IA64/Altix systems */
3015 * 82547 workaround to avoid controller hang in half-duplex environment.
3016 * The workaround is to avoid queuing a large packet that would span
3017 * the internal Tx FIFO ring boundary by notifying the stack to resend
3018 * the packet at a later time. This gives the Tx FIFO an opportunity to
3019 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3020 * to the beginning of the Tx FIFO.
3023 #define E1000_FIFO_HDR 0x10
3024 #define E1000_82547_PAD_LEN 0x3E0
3027 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3029 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3030 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3032 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
3034 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3035 goto no_fifo_stall_required
;
3037 if (atomic_read(&adapter
->tx_fifo_stall
))
3040 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3041 atomic_set(&adapter
->tx_fifo_stall
, 1);
3045 no_fifo_stall_required
:
3046 adapter
->tx_fifo_head
+= skb_fifo_len
;
3047 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3048 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3052 #define MINIMUM_DHCP_PACKET_SIZE 282
3054 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3056 struct e1000_hw
*hw
= &adapter
->hw
;
3057 uint16_t length
, offset
;
3058 if (vlan_tx_tag_present(skb
)) {
3059 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
3060 ( adapter
->hw
.mng_cookie
.status
&
3061 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3064 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3065 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
3066 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3067 const struct iphdr
*ip
=
3068 (struct iphdr
*)((uint8_t *)skb
->data
+14);
3069 if (IPPROTO_UDP
== ip
->protocol
) {
3070 struct udphdr
*udp
=
3071 (struct udphdr
*)((uint8_t *)ip
+
3073 if (ntohs(udp
->dest
) == 67) {
3074 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
3075 length
= skb
->len
- offset
;
3077 return e1000_mng_write_dhcp_info(hw
,
3087 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3089 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3090 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3092 netif_stop_queue(netdev
);
3093 /* Herbert's original patch had:
3094 * smp_mb__after_netif_stop_queue();
3095 * but since that doesn't exist yet, just open code it. */
3098 /* We need to check again in a case another CPU has just
3099 * made room available. */
3100 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3104 netif_start_queue(netdev
);
3105 ++adapter
->restart_queue
;
3109 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3110 struct e1000_tx_ring
*tx_ring
, int size
)
3112 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3114 return __e1000_maybe_stop_tx(netdev
, size
);
3117 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3119 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3121 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3122 struct e1000_tx_ring
*tx_ring
;
3123 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3124 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3125 unsigned int tx_flags
= 0;
3126 unsigned int len
= skb
->len
;
3127 unsigned long flags
;
3128 unsigned int nr_frags
= 0;
3129 unsigned int mss
= 0;
3133 len
-= skb
->data_len
;
3135 /* This goes back to the question of how to logically map a tx queue
3136 * to a flow. Right now, performance is impacted slightly negatively
3137 * if using multiple tx queues. If the stack breaks away from a
3138 * single qdisc implementation, we can look at this again. */
3139 tx_ring
= adapter
->tx_ring
;
3141 if (unlikely(skb
->len
<= 0)) {
3142 dev_kfree_skb_any(skb
);
3143 return NETDEV_TX_OK
;
3146 /* 82571 and newer doesn't need the workaround that limited descriptor
3148 if (adapter
->hw
.mac_type
>= e1000_82571
)
3152 mss
= skb_shinfo(skb
)->gso_size
;
3153 /* The controller does a simple calculation to
3154 * make sure there is enough room in the FIFO before
3155 * initiating the DMA for each buffer. The calc is:
3156 * 4 = ceil(buffer len/mss). To make sure we don't
3157 * overrun the FIFO, adjust the max buffer len if mss
3161 max_per_txd
= min(mss
<< 2, max_per_txd
);
3162 max_txd_pwr
= fls(max_per_txd
) - 1;
3164 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3165 * points to just header, pull a few bytes of payload from
3166 * frags into skb->data */
3167 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3168 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3169 switch (adapter
->hw
.mac_type
) {
3170 unsigned int pull_size
;
3175 pull_size
= min((unsigned int)4, skb
->data_len
);
3176 if (!__pskb_pull_tail(skb
, pull_size
)) {
3178 "__pskb_pull_tail failed.\n");
3179 dev_kfree_skb_any(skb
);
3180 return NETDEV_TX_OK
;
3182 len
= skb
->len
- skb
->data_len
;
3191 /* reserve a descriptor for the offload context */
3192 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3196 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
3201 /* Controller Erratum workaround */
3202 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3206 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3208 if (adapter
->pcix_82544
)
3211 /* work-around for errata 10 and it applies to all controllers
3212 * in PCI-X mode, so add one more descriptor to the count
3214 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3218 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3219 for (f
= 0; f
< nr_frags
; f
++)
3220 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3222 if (adapter
->pcix_82544
)
3226 if (adapter
->hw
.tx_pkt_filtering
&&
3227 (adapter
->hw
.mac_type
== e1000_82573
))
3228 e1000_transfer_dhcp_info(adapter
, skb
);
3230 local_irq_save(flags
);
3231 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3232 /* Collision - tell upper layer to requeue */
3233 local_irq_restore(flags
);
3234 return NETDEV_TX_LOCKED
;
3237 /* need: count + 2 desc gap to keep tail from touching
3238 * head, otherwise try next time */
3239 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3240 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3241 return NETDEV_TX_BUSY
;
3244 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3245 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3246 netif_stop_queue(netdev
);
3247 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3248 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3249 return NETDEV_TX_BUSY
;
3253 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3254 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3255 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3258 first
= tx_ring
->next_to_use
;
3260 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3262 dev_kfree_skb_any(skb
);
3263 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3264 return NETDEV_TX_OK
;
3268 tx_ring
->last_tx_tso
= 1;
3269 tx_flags
|= E1000_TX_FLAGS_TSO
;
3270 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3271 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3273 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3274 * 82571 hardware supports TSO capabilities for IPv6 as well...
3275 * no longer assume, we must. */
3276 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3277 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3279 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3280 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3281 max_per_txd
, nr_frags
, mss
));
3283 netdev
->trans_start
= jiffies
;
3285 /* Make sure there is space in the ring for the next send. */
3286 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3288 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3289 return NETDEV_TX_OK
;
3293 * e1000_tx_timeout - Respond to a Tx Hang
3294 * @netdev: network interface device structure
3298 e1000_tx_timeout(struct net_device
*netdev
)
3300 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3302 /* Do the reset outside of interrupt context */
3303 adapter
->tx_timeout_count
++;
3304 schedule_work(&adapter
->reset_task
);
3308 e1000_reset_task(struct net_device
*netdev
)
3310 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3312 e1000_reinit_locked(adapter
);
3316 * e1000_get_stats - Get System Network Statistics
3317 * @netdev: network interface device structure
3319 * Returns the address of the device statistics structure.
3320 * The statistics are actually updated from the timer callback.
3323 static struct net_device_stats
*
3324 e1000_get_stats(struct net_device
*netdev
)
3326 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3328 /* only return the current stats */
3329 return &adapter
->net_stats
;
3333 * e1000_change_mtu - Change the Maximum Transfer Unit
3334 * @netdev: network interface device structure
3335 * @new_mtu: new value for maximum frame size
3337 * Returns 0 on success, negative on failure
3341 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3343 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3344 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3345 uint16_t eeprom_data
= 0;
3347 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3348 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3349 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3353 /* Adapter-specific max frame size limits. */
3354 switch (adapter
->hw
.mac_type
) {
3355 case e1000_undefined
... e1000_82542_rev2_1
:
3357 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3358 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3363 /* Jumbo Frames not supported if:
3364 * - this is not an 82573L device
3365 * - ASPM is enabled in any way (0x1A bits 3:2) */
3366 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3368 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3369 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3370 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3372 "Jumbo Frames not supported.\n");
3377 /* ERT will be enabled later to enable wire speed receives */
3379 /* fall through to get support */
3382 case e1000_80003es2lan
:
3383 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3384 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3385 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3390 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3394 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3395 * means we reserve 2 more, this pushes us to allocate from the next
3397 * i.e. RXBUFFER_2048 --> size-4096 slab */
3399 if (max_frame
<= E1000_RXBUFFER_256
)
3400 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3401 else if (max_frame
<= E1000_RXBUFFER_512
)
3402 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3403 else if (max_frame
<= E1000_RXBUFFER_1024
)
3404 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3405 else if (max_frame
<= E1000_RXBUFFER_2048
)
3406 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3407 else if (max_frame
<= E1000_RXBUFFER_4096
)
3408 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3409 else if (max_frame
<= E1000_RXBUFFER_8192
)
3410 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3411 else if (max_frame
<= E1000_RXBUFFER_16384
)
3412 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3414 /* adjust allocation if LPE protects us, and we aren't using SBP */
3415 if (!adapter
->hw
.tbi_compatibility_on
&&
3416 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3417 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3418 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3420 netdev
->mtu
= new_mtu
;
3422 if (netif_running(netdev
))
3423 e1000_reinit_locked(adapter
);
3425 adapter
->hw
.max_frame_size
= max_frame
;
3431 * e1000_update_stats - Update the board statistics counters
3432 * @adapter: board private structure
3436 e1000_update_stats(struct e1000_adapter
*adapter
)
3438 struct e1000_hw
*hw
= &adapter
->hw
;
3439 struct pci_dev
*pdev
= adapter
->pdev
;
3440 unsigned long flags
;
3443 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3446 * Prevent stats update while adapter is being reset, or if the pci
3447 * connection is down.
3449 if (adapter
->link_speed
== 0)
3451 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3454 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3456 /* these counters are modified from e1000_adjust_tbi_stats,
3457 * called from the interrupt context, so they must only
3458 * be written while holding adapter->stats_lock
3461 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3462 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3463 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3464 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3465 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3466 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3467 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3469 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3470 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3471 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3472 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3473 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3474 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3475 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3478 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3479 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3480 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3481 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3482 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3483 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3484 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3485 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3486 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3487 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3488 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3489 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3490 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3491 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3492 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3493 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3494 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3495 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3496 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3497 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3498 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3499 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3500 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3501 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3502 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3503 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3505 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3506 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3507 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3508 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3509 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3510 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3511 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3514 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3515 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3517 /* used for adaptive IFS */
3519 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3520 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3521 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3522 adapter
->stats
.colc
+= hw
->collision_delta
;
3524 if (hw
->mac_type
>= e1000_82543
) {
3525 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3526 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3527 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3528 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3529 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3530 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3532 if (hw
->mac_type
> e1000_82547_rev_2
) {
3533 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3534 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3536 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3537 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3538 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3539 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3540 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3541 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3542 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3543 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3547 /* Fill out the OS statistics structure */
3548 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3549 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3550 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3551 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3552 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3553 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3557 /* RLEC on some newer hardware can be incorrect so build
3558 * our own version based on RUC and ROC */
3559 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3560 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3561 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3562 adapter
->stats
.cexterr
;
3563 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3564 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3565 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3566 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3567 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3570 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3571 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3572 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3573 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3574 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3576 /* Tx Dropped needs to be maintained elsewhere */
3579 if (hw
->media_type
== e1000_media_type_copper
) {
3580 if ((adapter
->link_speed
== SPEED_1000
) &&
3581 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3582 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3583 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3586 if ((hw
->mac_type
<= e1000_82546
) &&
3587 (hw
->phy_type
== e1000_phy_m88
) &&
3588 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3589 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3592 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3594 #ifdef CONFIG_PCI_MSI
3597 * e1000_intr_msi - Interrupt Handler
3598 * @irq: interrupt number
3599 * @data: pointer to a network interface device structure
3603 irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3605 struct net_device
*netdev
= data
;
3606 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3607 struct e1000_hw
*hw
= &adapter
->hw
;
3608 #ifndef CONFIG_E1000_NAPI
3612 /* this code avoids the read of ICR but has to get 1000 interrupts
3613 * at every link change event before it will notice the change */
3614 if (++adapter
->detect_link
>= 1000) {
3615 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3616 #ifdef CONFIG_E1000_NAPI
3617 /* read ICR disables interrupts using IAM, so keep up with our
3618 * enable/disable accounting */
3619 atomic_inc(&adapter
->irq_sem
);
3621 adapter
->detect_link
= 0;
3622 if ((icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) &&
3623 (icr
& E1000_ICR_INT_ASSERTED
)) {
3624 hw
->get_link_status
= 1;
3625 /* 80003ES2LAN workaround--
3626 * For packet buffer work-around on link down event;
3627 * disable receives here in the ISR and
3628 * reset adapter in watchdog
3630 if (netif_carrier_ok(netdev
) &&
3631 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3632 /* disable receives */
3633 uint32_t rctl
= E1000_READ_REG(hw
, RCTL
);
3634 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3636 /* guard against interrupt when we're going down */
3637 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3638 mod_timer(&adapter
->watchdog_timer
,
3642 E1000_WRITE_REG(hw
, ICR
, (0xffffffff & ~(E1000_ICR_RXSEQ
|
3644 /* bummer we have to flush here, but things break otherwise as
3645 * some event appears to be lost or delayed and throughput
3646 * drops. In almost all tests this flush is un-necessary */
3647 E1000_WRITE_FLUSH(hw
);
3648 #ifdef CONFIG_E1000_NAPI
3649 /* Interrupt Auto-Mask (IAM)...upon writing ICR, interrupts are
3650 * masked. No need for the IMC write, but it does mean we
3651 * should account for it ASAP. */
3652 atomic_inc(&adapter
->irq_sem
);
3656 #ifdef CONFIG_E1000_NAPI
3657 if (likely(netif_rx_schedule_prep(netdev
))) {
3658 adapter
->total_tx_bytes
= 0;
3659 adapter
->total_tx_packets
= 0;
3660 adapter
->total_rx_bytes
= 0;
3661 adapter
->total_rx_packets
= 0;
3662 __netif_rx_schedule(netdev
);
3664 e1000_irq_enable(adapter
);
3666 adapter
->total_tx_bytes
= 0;
3667 adapter
->total_rx_bytes
= 0;
3668 adapter
->total_tx_packets
= 0;
3669 adapter
->total_rx_packets
= 0;
3671 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3672 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3673 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3676 if (likely(adapter
->itr_setting
& 3))
3677 e1000_set_itr(adapter
);
3685 * e1000_intr - Interrupt Handler
3686 * @irq: interrupt number
3687 * @data: pointer to a network interface device structure
3691 e1000_intr(int irq
, void *data
)
3693 struct net_device
*netdev
= data
;
3694 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3695 struct e1000_hw
*hw
= &adapter
->hw
;
3696 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3697 #ifndef CONFIG_E1000_NAPI
3701 return IRQ_NONE
; /* Not our interrupt */
3703 #ifdef CONFIG_E1000_NAPI
3704 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3705 * not set, then the adapter didn't send an interrupt */
3706 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3707 !(icr
& E1000_ICR_INT_ASSERTED
)))
3710 /* Interrupt Auto-Mask...upon reading ICR,
3711 * interrupts are masked. No need for the
3712 * IMC write, but it does mean we should
3713 * account for it ASAP. */
3714 if (likely(hw
->mac_type
>= e1000_82571
))
3715 atomic_inc(&adapter
->irq_sem
);
3718 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3719 hw
->get_link_status
= 1;
3720 /* 80003ES2LAN workaround--
3721 * For packet buffer work-around on link down event;
3722 * disable receives here in the ISR and
3723 * reset adapter in watchdog
3725 if (netif_carrier_ok(netdev
) &&
3726 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3727 /* disable receives */
3728 rctl
= E1000_READ_REG(hw
, RCTL
);
3729 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3731 /* guard against interrupt when we're going down */
3732 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3733 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3736 #ifdef CONFIG_E1000_NAPI
3737 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3738 /* disable interrupts, without the synchronize_irq bit */
3739 atomic_inc(&adapter
->irq_sem
);
3740 E1000_WRITE_REG(hw
, IMC
, ~0);
3741 E1000_WRITE_FLUSH(hw
);
3743 if (likely(netif_rx_schedule_prep(netdev
))) {
3744 adapter
->total_tx_bytes
= 0;
3745 adapter
->total_tx_packets
= 0;
3746 adapter
->total_rx_bytes
= 0;
3747 adapter
->total_rx_packets
= 0;
3748 __netif_rx_schedule(netdev
);
3750 /* this really should not happen! if it does it is basically a
3751 * bug, but not a hard error, so enable ints and continue */
3752 e1000_irq_enable(adapter
);
3754 /* Writing IMC and IMS is needed for 82547.
3755 * Due to Hub Link bus being occupied, an interrupt
3756 * de-assertion message is not able to be sent.
3757 * When an interrupt assertion message is generated later,
3758 * two messages are re-ordered and sent out.
3759 * That causes APIC to think 82547 is in de-assertion
3760 * state, while 82547 is in assertion state, resulting
3761 * in dead lock. Writing IMC forces 82547 into
3762 * de-assertion state.
3764 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3765 atomic_inc(&adapter
->irq_sem
);
3766 E1000_WRITE_REG(hw
, IMC
, ~0);
3769 adapter
->total_tx_bytes
= 0;
3770 adapter
->total_rx_bytes
= 0;
3771 adapter
->total_tx_packets
= 0;
3772 adapter
->total_rx_packets
= 0;
3774 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3775 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3776 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3779 if (likely(adapter
->itr_setting
& 3))
3780 e1000_set_itr(adapter
);
3782 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3783 e1000_irq_enable(adapter
);
3789 #ifdef CONFIG_E1000_NAPI
3791 * e1000_clean - NAPI Rx polling callback
3792 * @adapter: board private structure
3796 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3798 struct e1000_adapter
*adapter
;
3799 int work_to_do
= min(*budget
, poll_dev
->quota
);
3800 int tx_cleaned
= 0, work_done
= 0;
3802 /* Must NOT use netdev_priv macro here. */
3803 adapter
= poll_dev
->priv
;
3805 /* Keep link state information with original netdev */
3806 if (!netif_carrier_ok(poll_dev
))
3809 /* e1000_clean is called per-cpu. This lock protects
3810 * tx_ring[0] from being cleaned by multiple cpus
3811 * simultaneously. A failure obtaining the lock means
3812 * tx_ring[0] is currently being cleaned anyway. */
3813 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3814 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3815 &adapter
->tx_ring
[0]);
3816 spin_unlock(&adapter
->tx_queue_lock
);
3819 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3820 &work_done
, work_to_do
);
3822 *budget
-= work_done
;
3823 poll_dev
->quota
-= work_done
;
3825 /* If no Tx and not enough Rx work done, exit the polling mode */
3826 if ((!tx_cleaned
&& (work_done
== 0)) ||
3827 !netif_running(poll_dev
)) {
3829 if (likely(adapter
->itr_setting
& 3))
3830 e1000_set_itr(adapter
);
3831 netif_rx_complete(poll_dev
);
3832 e1000_irq_enable(adapter
);
3841 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3842 * @adapter: board private structure
3846 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3847 struct e1000_tx_ring
*tx_ring
)
3849 struct net_device
*netdev
= adapter
->netdev
;
3850 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3851 struct e1000_buffer
*buffer_info
;
3852 unsigned int i
, eop
;
3853 #ifdef CONFIG_E1000_NAPI
3854 unsigned int count
= 0;
3856 boolean_t cleaned
= FALSE
;
3857 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3859 i
= tx_ring
->next_to_clean
;
3860 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3861 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3863 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3864 for (cleaned
= FALSE
; !cleaned
; ) {
3865 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3866 buffer_info
= &tx_ring
->buffer_info
[i
];
3867 cleaned
= (i
== eop
);
3870 /* this packet count is wrong for TSO but has a
3871 * tendency to make dynamic ITR change more
3874 total_tx_bytes
+= buffer_info
->skb
->len
;
3876 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3877 tx_desc
->upper
.data
= 0;
3879 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3882 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3883 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3884 #ifdef CONFIG_E1000_NAPI
3885 #define E1000_TX_WEIGHT 64
3886 /* weight of a sort for tx, to avoid endless transmit cleanup */
3887 if (count
++ == E1000_TX_WEIGHT
) break;
3891 tx_ring
->next_to_clean
= i
;
3893 #define TX_WAKE_THRESHOLD 32
3894 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3895 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3896 /* Make sure that anybody stopping the queue after this
3897 * sees the new next_to_clean.
3900 if (netif_queue_stopped(netdev
)) {
3901 netif_wake_queue(netdev
);
3902 ++adapter
->restart_queue
;
3906 if (adapter
->detect_tx_hung
) {
3907 /* Detect a transmit hang in hardware, this serializes the
3908 * check with the clearing of time_stamp and movement of i */
3909 adapter
->detect_tx_hung
= FALSE
;
3910 if (tx_ring
->buffer_info
[eop
].dma
&&
3911 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3912 (adapter
->tx_timeout_factor
* HZ
))
3913 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3914 E1000_STATUS_TXOFF
)) {
3916 /* detected Tx unit hang */
3917 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3921 " next_to_use <%x>\n"
3922 " next_to_clean <%x>\n"
3923 "buffer_info[next_to_clean]\n"
3924 " time_stamp <%lx>\n"
3925 " next_to_watch <%x>\n"
3927 " next_to_watch.status <%x>\n",
3928 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3929 sizeof(struct e1000_tx_ring
)),
3930 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3931 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3932 tx_ring
->next_to_use
,
3933 tx_ring
->next_to_clean
,
3934 tx_ring
->buffer_info
[eop
].time_stamp
,
3937 eop_desc
->upper
.fields
.status
);
3938 netif_stop_queue(netdev
);
3941 adapter
->total_tx_bytes
+= total_tx_bytes
;
3942 adapter
->total_tx_packets
+= total_tx_packets
;
3947 * e1000_rx_checksum - Receive Checksum Offload for 82543
3948 * @adapter: board private structure
3949 * @status_err: receive descriptor status and error fields
3950 * @csum: receive descriptor csum field
3951 * @sk_buff: socket buffer with received data
3955 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3956 uint32_t status_err
, uint32_t csum
,
3957 struct sk_buff
*skb
)
3959 uint16_t status
= (uint16_t)status_err
;
3960 uint8_t errors
= (uint8_t)(status_err
>> 24);
3961 skb
->ip_summed
= CHECKSUM_NONE
;
3963 /* 82543 or newer only */
3964 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3965 /* Ignore Checksum bit is set */
3966 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3967 /* TCP/UDP checksum error bit is set */
3968 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3969 /* let the stack verify checksum errors */
3970 adapter
->hw_csum_err
++;
3973 /* TCP/UDP Checksum has not been calculated */
3974 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3975 if (!(status
& E1000_RXD_STAT_TCPCS
))
3978 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3981 /* It must be a TCP or UDP packet with a valid checksum */
3982 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3983 /* TCP checksum is good */
3984 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3985 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3986 /* IP fragment with UDP payload */
3987 /* Hardware complements the payload checksum, so we undo it
3988 * and then put the value in host order for further stack use.
3990 csum
= ntohl(csum
^ 0xFFFF);
3992 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3994 adapter
->hw_csum_good
++;
3998 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3999 * @adapter: board private structure
4003 #ifdef CONFIG_E1000_NAPI
4004 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4005 struct e1000_rx_ring
*rx_ring
,
4006 int *work_done
, int work_to_do
)
4008 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4009 struct e1000_rx_ring
*rx_ring
)
4012 struct net_device
*netdev
= adapter
->netdev
;
4013 struct pci_dev
*pdev
= adapter
->pdev
;
4014 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
4015 struct e1000_buffer
*buffer_info
, *next_buffer
;
4016 unsigned long flags
;
4020 int cleaned_count
= 0;
4021 boolean_t cleaned
= FALSE
;
4022 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4024 i
= rx_ring
->next_to_clean
;
4025 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4026 buffer_info
= &rx_ring
->buffer_info
[i
];
4028 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4029 struct sk_buff
*skb
;
4032 #ifdef CONFIG_E1000_NAPI
4033 if (*work_done
>= work_to_do
)
4037 status
= rx_desc
->status
;
4038 skb
= buffer_info
->skb
;
4039 buffer_info
->skb
= NULL
;
4041 prefetch(skb
->data
- NET_IP_ALIGN
);
4043 if (++i
== rx_ring
->count
) i
= 0;
4044 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4047 next_buffer
= &rx_ring
->buffer_info
[i
];
4051 pci_unmap_single(pdev
,
4053 buffer_info
->length
,
4054 PCI_DMA_FROMDEVICE
);
4056 length
= le16_to_cpu(rx_desc
->length
);
4058 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4059 /* All receives must fit into a single buffer */
4060 E1000_DBG("%s: Receive packet consumed multiple"
4061 " buffers\n", netdev
->name
);
4063 buffer_info
->skb
= skb
;
4067 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4068 last_byte
= *(skb
->data
+ length
- 1);
4069 if (TBI_ACCEPT(&adapter
->hw
, status
,
4070 rx_desc
->errors
, length
, last_byte
)) {
4071 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4072 e1000_tbi_adjust_stats(&adapter
->hw
,
4075 spin_unlock_irqrestore(&adapter
->stats_lock
,
4080 buffer_info
->skb
= skb
;
4085 /* adjust length to remove Ethernet CRC, this must be
4086 * done after the TBI_ACCEPT workaround above */
4089 /* probably a little skewed due to removing CRC */
4090 total_rx_bytes
+= length
;
4093 /* code added for copybreak, this should improve
4094 * performance for small packets with large amounts
4095 * of reassembly being done in the stack */
4096 #define E1000_CB_LENGTH 256
4097 if (length
< E1000_CB_LENGTH
) {
4098 struct sk_buff
*new_skb
=
4099 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4101 skb_reserve(new_skb
, NET_IP_ALIGN
);
4102 memcpy(new_skb
->data
- NET_IP_ALIGN
,
4103 skb
->data
- NET_IP_ALIGN
,
4104 length
+ NET_IP_ALIGN
);
4105 /* save the skb in buffer_info as good */
4106 buffer_info
->skb
= skb
;
4109 /* else just continue with the old one */
4111 /* end copybreak code */
4112 skb_put(skb
, length
);
4114 /* Receive Checksum Offload */
4115 e1000_rx_checksum(adapter
,
4116 (uint32_t)(status
) |
4117 ((uint32_t)(rx_desc
->errors
) << 24),
4118 le16_to_cpu(rx_desc
->csum
), skb
);
4120 skb
->protocol
= eth_type_trans(skb
, netdev
);
4121 #ifdef CONFIG_E1000_NAPI
4122 if (unlikely(adapter
->vlgrp
&&
4123 (status
& E1000_RXD_STAT_VP
))) {
4124 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4125 le16_to_cpu(rx_desc
->special
) &
4126 E1000_RXD_SPC_VLAN_MASK
);
4128 netif_receive_skb(skb
);
4130 #else /* CONFIG_E1000_NAPI */
4131 if (unlikely(adapter
->vlgrp
&&
4132 (status
& E1000_RXD_STAT_VP
))) {
4133 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4134 le16_to_cpu(rx_desc
->special
) &
4135 E1000_RXD_SPC_VLAN_MASK
);
4139 #endif /* CONFIG_E1000_NAPI */
4140 netdev
->last_rx
= jiffies
;
4143 rx_desc
->status
= 0;
4145 /* return some buffers to hardware, one at a time is too slow */
4146 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4147 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4151 /* use prefetched values */
4153 buffer_info
= next_buffer
;
4155 rx_ring
->next_to_clean
= i
;
4157 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4159 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4161 adapter
->total_rx_packets
+= total_rx_packets
;
4162 adapter
->total_rx_bytes
+= total_rx_bytes
;
4167 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
4168 * @adapter: board private structure
4172 #ifdef CONFIG_E1000_NAPI
4173 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4174 struct e1000_rx_ring
*rx_ring
,
4175 int *work_done
, int work_to_do
)
4177 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4178 struct e1000_rx_ring
*rx_ring
)
4181 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
4182 struct net_device
*netdev
= adapter
->netdev
;
4183 struct pci_dev
*pdev
= adapter
->pdev
;
4184 struct e1000_buffer
*buffer_info
, *next_buffer
;
4185 struct e1000_ps_page
*ps_page
;
4186 struct e1000_ps_page_dma
*ps_page_dma
;
4187 struct sk_buff
*skb
;
4189 uint32_t length
, staterr
;
4190 int cleaned_count
= 0;
4191 boolean_t cleaned
= FALSE
;
4192 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4194 i
= rx_ring
->next_to_clean
;
4195 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4196 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4197 buffer_info
= &rx_ring
->buffer_info
[i
];
4199 while (staterr
& E1000_RXD_STAT_DD
) {
4200 ps_page
= &rx_ring
->ps_page
[i
];
4201 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4202 #ifdef CONFIG_E1000_NAPI
4203 if (unlikely(*work_done
>= work_to_do
))
4207 skb
= buffer_info
->skb
;
4209 /* in the packet split case this is header only */
4210 prefetch(skb
->data
- NET_IP_ALIGN
);
4212 if (++i
== rx_ring
->count
) i
= 0;
4213 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
4216 next_buffer
= &rx_ring
->buffer_info
[i
];
4220 pci_unmap_single(pdev
, buffer_info
->dma
,
4221 buffer_info
->length
,
4222 PCI_DMA_FROMDEVICE
);
4224 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
4225 E1000_DBG("%s: Packet Split buffers didn't pick up"
4226 " the full packet\n", netdev
->name
);
4227 dev_kfree_skb_irq(skb
);
4231 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
4232 dev_kfree_skb_irq(skb
);
4236 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
4238 if (unlikely(!length
)) {
4239 E1000_DBG("%s: Last part of the packet spanning"
4240 " multiple descriptors\n", netdev
->name
);
4241 dev_kfree_skb_irq(skb
);
4246 skb_put(skb
, length
);
4249 /* this looks ugly, but it seems compiler issues make it
4250 more efficient than reusing j */
4251 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
4253 /* page alloc/put takes too long and effects small packet
4254 * throughput, so unsplit small packets and save the alloc/put*/
4255 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
4257 /* there is no documentation about how to call
4258 * kmap_atomic, so we can't hold the mapping
4260 pci_dma_sync_single_for_cpu(pdev
,
4261 ps_page_dma
->ps_page_dma
[0],
4263 PCI_DMA_FROMDEVICE
);
4264 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
4265 KM_SKB_DATA_SOFTIRQ
);
4266 memcpy(skb
->tail
, vaddr
, l1
);
4267 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
4268 pci_dma_sync_single_for_device(pdev
,
4269 ps_page_dma
->ps_page_dma
[0],
4270 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4271 /* remove the CRC */
4278 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4279 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4281 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4282 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4283 ps_page_dma
->ps_page_dma
[j
] = 0;
4284 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4286 ps_page
->ps_page
[j
] = NULL
;
4288 skb
->data_len
+= length
;
4289 skb
->truesize
+= length
;
4292 /* strip the ethernet crc, problem is we're using pages now so
4293 * this whole operation can get a little cpu intensive */
4294 pskb_trim(skb
, skb
->len
- 4);
4297 total_rx_bytes
+= skb
->len
;
4300 e1000_rx_checksum(adapter
, staterr
,
4301 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4302 skb
->protocol
= eth_type_trans(skb
, netdev
);
4304 if (likely(rx_desc
->wb
.upper
.header_status
&
4305 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4306 adapter
->rx_hdr_split
++;
4307 #ifdef CONFIG_E1000_NAPI
4308 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4309 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4310 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4311 E1000_RXD_SPC_VLAN_MASK
);
4313 netif_receive_skb(skb
);
4315 #else /* CONFIG_E1000_NAPI */
4316 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4317 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4318 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4319 E1000_RXD_SPC_VLAN_MASK
);
4323 #endif /* CONFIG_E1000_NAPI */
4324 netdev
->last_rx
= jiffies
;
4327 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4328 buffer_info
->skb
= NULL
;
4330 /* return some buffers to hardware, one at a time is too slow */
4331 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4332 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4336 /* use prefetched values */
4338 buffer_info
= next_buffer
;
4340 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4342 rx_ring
->next_to_clean
= i
;
4344 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4346 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4348 adapter
->total_rx_packets
+= total_rx_packets
;
4349 adapter
->total_rx_bytes
+= total_rx_bytes
;
4354 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4355 * @adapter: address of board private structure
4359 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4360 struct e1000_rx_ring
*rx_ring
,
4363 struct net_device
*netdev
= adapter
->netdev
;
4364 struct pci_dev
*pdev
= adapter
->pdev
;
4365 struct e1000_rx_desc
*rx_desc
;
4366 struct e1000_buffer
*buffer_info
;
4367 struct sk_buff
*skb
;
4369 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4371 i
= rx_ring
->next_to_use
;
4372 buffer_info
= &rx_ring
->buffer_info
[i
];
4374 while (cleaned_count
--) {
4375 skb
= buffer_info
->skb
;
4381 skb
= netdev_alloc_skb(netdev
, bufsz
);
4382 if (unlikely(!skb
)) {
4383 /* Better luck next round */
4384 adapter
->alloc_rx_buff_failed
++;
4388 /* Fix for errata 23, can't cross 64kB boundary */
4389 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4390 struct sk_buff
*oldskb
= skb
;
4391 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4392 "at %p\n", bufsz
, skb
->data
);
4393 /* Try again, without freeing the previous */
4394 skb
= netdev_alloc_skb(netdev
, bufsz
);
4395 /* Failed allocation, critical failure */
4397 dev_kfree_skb(oldskb
);
4401 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4404 dev_kfree_skb(oldskb
);
4405 break; /* while !buffer_info->skb */
4408 /* Use new allocation */
4409 dev_kfree_skb(oldskb
);
4411 /* Make buffer alignment 2 beyond a 16 byte boundary
4412 * this will result in a 16 byte aligned IP header after
4413 * the 14 byte MAC header is removed
4415 skb_reserve(skb
, NET_IP_ALIGN
);
4417 buffer_info
->skb
= skb
;
4418 buffer_info
->length
= adapter
->rx_buffer_len
;
4420 buffer_info
->dma
= pci_map_single(pdev
,
4422 adapter
->rx_buffer_len
,
4423 PCI_DMA_FROMDEVICE
);
4425 /* Fix for errata 23, can't cross 64kB boundary */
4426 if (!e1000_check_64k_bound(adapter
,
4427 (void *)(unsigned long)buffer_info
->dma
,
4428 adapter
->rx_buffer_len
)) {
4429 DPRINTK(RX_ERR
, ERR
,
4430 "dma align check failed: %u bytes at %p\n",
4431 adapter
->rx_buffer_len
,
4432 (void *)(unsigned long)buffer_info
->dma
);
4434 buffer_info
->skb
= NULL
;
4436 pci_unmap_single(pdev
, buffer_info
->dma
,
4437 adapter
->rx_buffer_len
,
4438 PCI_DMA_FROMDEVICE
);
4440 break; /* while !buffer_info->skb */
4442 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4443 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4445 if (unlikely(++i
== rx_ring
->count
))
4447 buffer_info
= &rx_ring
->buffer_info
[i
];
4450 if (likely(rx_ring
->next_to_use
!= i
)) {
4451 rx_ring
->next_to_use
= i
;
4452 if (unlikely(i
-- == 0))
4453 i
= (rx_ring
->count
- 1);
4455 /* Force memory writes to complete before letting h/w
4456 * know there are new descriptors to fetch. (Only
4457 * applicable for weak-ordered memory model archs,
4458 * such as IA-64). */
4460 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4465 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4466 * @adapter: address of board private structure
4470 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4471 struct e1000_rx_ring
*rx_ring
,
4474 struct net_device
*netdev
= adapter
->netdev
;
4475 struct pci_dev
*pdev
= adapter
->pdev
;
4476 union e1000_rx_desc_packet_split
*rx_desc
;
4477 struct e1000_buffer
*buffer_info
;
4478 struct e1000_ps_page
*ps_page
;
4479 struct e1000_ps_page_dma
*ps_page_dma
;
4480 struct sk_buff
*skb
;
4483 i
= rx_ring
->next_to_use
;
4484 buffer_info
= &rx_ring
->buffer_info
[i
];
4485 ps_page
= &rx_ring
->ps_page
[i
];
4486 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4488 while (cleaned_count
--) {
4489 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4491 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4492 if (j
< adapter
->rx_ps_pages
) {
4493 if (likely(!ps_page
->ps_page
[j
])) {
4494 ps_page
->ps_page
[j
] =
4495 alloc_page(GFP_ATOMIC
);
4496 if (unlikely(!ps_page
->ps_page
[j
])) {
4497 adapter
->alloc_rx_buff_failed
++;
4500 ps_page_dma
->ps_page_dma
[j
] =
4502 ps_page
->ps_page
[j
],
4504 PCI_DMA_FROMDEVICE
);
4506 /* Refresh the desc even if buffer_addrs didn't
4507 * change because each write-back erases
4510 rx_desc
->read
.buffer_addr
[j
+1] =
4511 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4513 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4516 skb
= netdev_alloc_skb(netdev
,
4517 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4519 if (unlikely(!skb
)) {
4520 adapter
->alloc_rx_buff_failed
++;
4524 /* Make buffer alignment 2 beyond a 16 byte boundary
4525 * this will result in a 16 byte aligned IP header after
4526 * the 14 byte MAC header is removed
4528 skb_reserve(skb
, NET_IP_ALIGN
);
4530 buffer_info
->skb
= skb
;
4531 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4532 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4533 adapter
->rx_ps_bsize0
,
4534 PCI_DMA_FROMDEVICE
);
4536 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4538 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4539 buffer_info
= &rx_ring
->buffer_info
[i
];
4540 ps_page
= &rx_ring
->ps_page
[i
];
4541 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4545 if (likely(rx_ring
->next_to_use
!= i
)) {
4546 rx_ring
->next_to_use
= i
;
4547 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4549 /* Force memory writes to complete before letting h/w
4550 * know there are new descriptors to fetch. (Only
4551 * applicable for weak-ordered memory model archs,
4552 * such as IA-64). */
4554 /* Hardware increments by 16 bytes, but packet split
4555 * descriptors are 32 bytes...so we increment tail
4558 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4563 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4568 e1000_smartspeed(struct e1000_adapter
*adapter
)
4570 uint16_t phy_status
;
4573 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4574 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4577 if (adapter
->smartspeed
== 0) {
4578 /* If Master/Slave config fault is asserted twice,
4579 * we assume back-to-back */
4580 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4581 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4582 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4583 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4584 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4585 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4586 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4587 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4589 adapter
->smartspeed
++;
4590 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4591 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4593 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4594 MII_CR_RESTART_AUTO_NEG
);
4595 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4600 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4601 /* If still no link, perhaps using 2/3 pair cable */
4602 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4603 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4604 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4605 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4606 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4607 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4608 MII_CR_RESTART_AUTO_NEG
);
4609 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4612 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4613 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4614 adapter
->smartspeed
= 0;
4625 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4631 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4645 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4647 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4648 struct mii_ioctl_data
*data
= if_mii(ifr
);
4652 unsigned long flags
;
4654 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4659 data
->phy_id
= adapter
->hw
.phy_addr
;
4662 if (!capable(CAP_NET_ADMIN
))
4664 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4665 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4667 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4670 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4673 if (!capable(CAP_NET_ADMIN
))
4675 if (data
->reg_num
& ~(0x1F))
4677 mii_reg
= data
->val_in
;
4678 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4679 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4681 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4684 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4685 switch (data
->reg_num
) {
4687 if (mii_reg
& MII_CR_POWER_DOWN
)
4689 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4690 adapter
->hw
.autoneg
= 1;
4691 adapter
->hw
.autoneg_advertised
= 0x2F;
4694 spddplx
= SPEED_1000
;
4695 else if (mii_reg
& 0x2000)
4696 spddplx
= SPEED_100
;
4699 spddplx
+= (mii_reg
& 0x100)
4702 retval
= e1000_set_spd_dplx(adapter
,
4705 spin_unlock_irqrestore(
4706 &adapter
->stats_lock
,
4711 if (netif_running(adapter
->netdev
))
4712 e1000_reinit_locked(adapter
);
4714 e1000_reset(adapter
);
4716 case M88E1000_PHY_SPEC_CTRL
:
4717 case M88E1000_EXT_PHY_SPEC_CTRL
:
4718 if (e1000_phy_reset(&adapter
->hw
)) {
4719 spin_unlock_irqrestore(
4720 &adapter
->stats_lock
, flags
);
4726 switch (data
->reg_num
) {
4728 if (mii_reg
& MII_CR_POWER_DOWN
)
4730 if (netif_running(adapter
->netdev
))
4731 e1000_reinit_locked(adapter
);
4733 e1000_reset(adapter
);
4737 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4742 return E1000_SUCCESS
;
4746 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4748 struct e1000_adapter
*adapter
= hw
->back
;
4749 int ret_val
= pci_set_mwi(adapter
->pdev
);
4752 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4756 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4758 struct e1000_adapter
*adapter
= hw
->back
;
4760 pci_clear_mwi(adapter
->pdev
);
4764 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4766 struct e1000_adapter
*adapter
= hw
->back
;
4768 pci_read_config_word(adapter
->pdev
, reg
, value
);
4772 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4774 struct e1000_adapter
*adapter
= hw
->back
;
4776 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4780 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4782 struct e1000_adapter
*adapter
= hw
->back
;
4783 uint16_t cap_offset
;
4785 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4787 return -E1000_ERR_CONFIG
;
4789 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4791 return E1000_SUCCESS
;
4795 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4801 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4803 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4804 uint32_t ctrl
, rctl
;
4806 e1000_irq_disable(adapter
);
4807 adapter
->vlgrp
= grp
;
4810 /* enable VLAN tag insert/strip */
4811 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4812 ctrl
|= E1000_CTRL_VME
;
4813 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4815 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4816 /* enable VLAN receive filtering */
4817 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4818 rctl
|= E1000_RCTL_VFE
;
4819 rctl
&= ~E1000_RCTL_CFIEN
;
4820 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4821 e1000_update_mng_vlan(adapter
);
4824 /* disable VLAN tag insert/strip */
4825 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4826 ctrl
&= ~E1000_CTRL_VME
;
4827 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4829 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4830 /* disable VLAN filtering */
4831 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4832 rctl
&= ~E1000_RCTL_VFE
;
4833 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4834 if (adapter
->mng_vlan_id
!=
4835 (uint16_t)E1000_MNG_VLAN_NONE
) {
4836 e1000_vlan_rx_kill_vid(netdev
,
4837 adapter
->mng_vlan_id
);
4838 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4843 e1000_irq_enable(adapter
);
4847 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4849 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4850 uint32_t vfta
, index
;
4852 if ((adapter
->hw
.mng_cookie
.status
&
4853 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4854 (vid
== adapter
->mng_vlan_id
))
4856 /* add VID to filter table */
4857 index
= (vid
>> 5) & 0x7F;
4858 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4859 vfta
|= (1 << (vid
& 0x1F));
4860 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4864 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4866 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4867 uint32_t vfta
, index
;
4869 e1000_irq_disable(adapter
);
4872 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4874 e1000_irq_enable(adapter
);
4876 if ((adapter
->hw
.mng_cookie
.status
&
4877 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4878 (vid
== adapter
->mng_vlan_id
)) {
4879 /* release control to f/w */
4880 e1000_release_hw_control(adapter
);
4884 /* remove VID from filter table */
4885 index
= (vid
>> 5) & 0x7F;
4886 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4887 vfta
&= ~(1 << (vid
& 0x1F));
4888 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4892 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4894 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4896 if (adapter
->vlgrp
) {
4898 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4899 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4901 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4907 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4909 adapter
->hw
.autoneg
= 0;
4911 /* Fiber NICs only allow 1000 gbps Full duplex */
4912 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4913 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4914 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4919 case SPEED_10
+ DUPLEX_HALF
:
4920 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4922 case SPEED_10
+ DUPLEX_FULL
:
4923 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4925 case SPEED_100
+ DUPLEX_HALF
:
4926 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4928 case SPEED_100
+ DUPLEX_FULL
:
4929 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4931 case SPEED_1000
+ DUPLEX_FULL
:
4932 adapter
->hw
.autoneg
= 1;
4933 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4935 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4937 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4944 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4945 * bus we're on (PCI(X) vs. PCI-E)
4947 #define PCIE_CONFIG_SPACE_LEN 256
4948 #define PCI_CONFIG_SPACE_LEN 64
4950 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4952 struct pci_dev
*dev
= adapter
->pdev
;
4956 if (adapter
->hw
.mac_type
>= e1000_82571
)
4957 size
= PCIE_CONFIG_SPACE_LEN
;
4959 size
= PCI_CONFIG_SPACE_LEN
;
4961 WARN_ON(adapter
->config_space
!= NULL
);
4963 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4964 if (!adapter
->config_space
) {
4965 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4968 for (i
= 0; i
< (size
/ 4); i
++)
4969 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4974 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4976 struct pci_dev
*dev
= adapter
->pdev
;
4980 if (adapter
->config_space
== NULL
)
4983 if (adapter
->hw
.mac_type
>= e1000_82571
)
4984 size
= PCIE_CONFIG_SPACE_LEN
;
4986 size
= PCI_CONFIG_SPACE_LEN
;
4987 for (i
= 0; i
< (size
/ 4); i
++)
4988 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4989 kfree(adapter
->config_space
);
4990 adapter
->config_space
= NULL
;
4993 #endif /* CONFIG_PM */
4996 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4998 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4999 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5000 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
5001 uint32_t wufc
= adapter
->wol
;
5006 netif_device_detach(netdev
);
5008 if (netif_running(netdev
)) {
5009 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
5010 e1000_down(adapter
);
5014 /* Implement our own version of pci_save_state(pdev) because pci-
5015 * express adapters have 256-byte config spaces. */
5016 retval
= e1000_pci_save_state(adapter
);
5021 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
5022 if (status
& E1000_STATUS_LU
)
5023 wufc
&= ~E1000_WUFC_LNKC
;
5026 e1000_setup_rctl(adapter
);
5027 e1000_set_multi(netdev
);
5029 /* turn on all-multi mode if wake on multicast is enabled */
5030 if (wufc
& E1000_WUFC_MC
) {
5031 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
5032 rctl
|= E1000_RCTL_MPE
;
5033 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
5036 if (adapter
->hw
.mac_type
>= e1000_82540
) {
5037 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
5038 /* advertise wake from D3Cold */
5039 #define E1000_CTRL_ADVD3WUC 0x00100000
5040 /* phy power management enable */
5041 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5042 ctrl
|= E1000_CTRL_ADVD3WUC
|
5043 E1000_CTRL_EN_PHY_PWR_MGMT
;
5044 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
5047 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
5048 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
5049 /* keep the laser running in D3 */
5050 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
5051 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
5052 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
5055 /* Allow time for pending master requests to run */
5056 e1000_disable_pciex_master(&adapter
->hw
);
5058 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
5059 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
5060 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5061 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5063 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
5064 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
5065 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5066 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5069 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5070 adapter
->hw
.mac_type
< e1000_82571
&&
5071 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5072 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5073 if (manc
& E1000_MANC_SMBUS_EN
) {
5074 manc
|= E1000_MANC_ARP_EN
;
5075 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5076 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5077 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5081 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
5082 e1000_phy_powerdown_workaround(&adapter
->hw
);
5084 if (netif_running(netdev
))
5085 e1000_free_irq(adapter
);
5087 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5088 * would have already happened in close and is redundant. */
5089 e1000_release_hw_control(adapter
);
5091 pci_disable_device(pdev
);
5093 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
5100 e1000_resume(struct pci_dev
*pdev
)
5102 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5103 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5106 pci_set_power_state(pdev
, PCI_D0
);
5107 e1000_pci_restore_state(adapter
);
5108 if ((err
= pci_enable_device(pdev
))) {
5109 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
5112 pci_set_master(pdev
);
5114 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5115 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5117 if (netif_running(netdev
) && (err
= e1000_request_irq(adapter
)))
5120 e1000_power_up_phy(adapter
);
5121 e1000_reset(adapter
);
5122 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5124 if (netif_running(netdev
))
5127 netif_device_attach(netdev
);
5129 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5130 adapter
->hw
.mac_type
< e1000_82571
&&
5131 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5132 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5133 manc
&= ~(E1000_MANC_ARP_EN
);
5134 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5137 /* If the controller is 82573 and f/w is AMT, do not set
5138 * DRV_LOAD until the interface is up. For all other cases,
5139 * let the f/w know that the h/w is now under the control
5141 if (adapter
->hw
.mac_type
!= e1000_82573
||
5142 !e1000_check_mng_mode(&adapter
->hw
))
5143 e1000_get_hw_control(adapter
);
5149 static void e1000_shutdown(struct pci_dev
*pdev
)
5151 e1000_suspend(pdev
, PMSG_SUSPEND
);
5154 #ifdef CONFIG_NET_POLL_CONTROLLER
5156 * Polling 'interrupt' - used by things like netconsole to send skbs
5157 * without having to re-enable interrupts. It's not called while
5158 * the interrupt routine is executing.
5161 e1000_netpoll(struct net_device
*netdev
)
5163 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5165 disable_irq(adapter
->pdev
->irq
);
5166 e1000_intr(adapter
->pdev
->irq
, netdev
);
5167 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
5168 #ifndef CONFIG_E1000_NAPI
5169 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
5171 enable_irq(adapter
->pdev
->irq
);
5176 * e1000_io_error_detected - called when PCI error is detected
5177 * @pdev: Pointer to PCI device
5178 * @state: The current pci conneection state
5180 * This function is called after a PCI bus error affecting
5181 * this device has been detected.
5183 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
5185 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5186 struct e1000_adapter
*adapter
= netdev
->priv
;
5188 netif_device_detach(netdev
);
5190 if (netif_running(netdev
))
5191 e1000_down(adapter
);
5192 pci_disable_device(pdev
);
5194 /* Request a slot slot reset. */
5195 return PCI_ERS_RESULT_NEED_RESET
;
5199 * e1000_io_slot_reset - called after the pci bus has been reset.
5200 * @pdev: Pointer to PCI device
5202 * Restart the card from scratch, as if from a cold-boot. Implementation
5203 * resembles the first-half of the e1000_resume routine.
5205 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5207 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5208 struct e1000_adapter
*adapter
= netdev
->priv
;
5210 if (pci_enable_device(pdev
)) {
5211 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
5212 return PCI_ERS_RESULT_DISCONNECT
;
5214 pci_set_master(pdev
);
5216 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5217 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5219 e1000_reset(adapter
);
5220 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5222 return PCI_ERS_RESULT_RECOVERED
;
5226 * e1000_io_resume - called when traffic can start flowing again.
5227 * @pdev: Pointer to PCI device
5229 * This callback is called when the error recovery driver tells us that
5230 * its OK to resume normal operation. Implementation resembles the
5231 * second-half of the e1000_resume routine.
5233 static void e1000_io_resume(struct pci_dev
*pdev
)
5235 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5236 struct e1000_adapter
*adapter
= netdev
->priv
;
5237 uint32_t manc
, swsm
;
5239 if (netif_running(netdev
)) {
5240 if (e1000_up(adapter
)) {
5241 printk("e1000: can't bring device back up after reset\n");
5246 netif_device_attach(netdev
);
5248 if (adapter
->hw
.mac_type
>= e1000_82540
&&
5249 adapter
->hw
.mac_type
< e1000_82571
&&
5250 adapter
->hw
.media_type
== e1000_media_type_copper
) {
5251 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
5252 manc
&= ~(E1000_MANC_ARP_EN
);
5253 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
5256 switch (adapter
->hw
.mac_type
) {
5258 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
5259 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
5260 swsm
| E1000_SWSM_DRV_LOAD
);
5266 if (netif_running(netdev
))
5267 mod_timer(&adapter
->watchdog_timer
, jiffies
);