1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 #include <net/ip6_checksum.h>
32 char e1000_driver_name
[] = "e1000";
33 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
34 #define DRV_VERSION "7.3.21-k3-NAPI"
35 const char e1000_driver_version
[] = DRV_VERSION
;
36 static const char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
38 /* e1000_pci_tbl - PCI Device ID Table
40 * Last entry must be all 0s
43 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
45 static struct pci_device_id e1000_pci_tbl
[] = {
46 INTEL_E1000_ETHERNET_DEVICE(0x1000),
47 INTEL_E1000_ETHERNET_DEVICE(0x1001),
48 INTEL_E1000_ETHERNET_DEVICE(0x1004),
49 INTEL_E1000_ETHERNET_DEVICE(0x1008),
50 INTEL_E1000_ETHERNET_DEVICE(0x1009),
51 INTEL_E1000_ETHERNET_DEVICE(0x100C),
52 INTEL_E1000_ETHERNET_DEVICE(0x100D),
53 INTEL_E1000_ETHERNET_DEVICE(0x100E),
54 INTEL_E1000_ETHERNET_DEVICE(0x100F),
55 INTEL_E1000_ETHERNET_DEVICE(0x1010),
56 INTEL_E1000_ETHERNET_DEVICE(0x1011),
57 INTEL_E1000_ETHERNET_DEVICE(0x1012),
58 INTEL_E1000_ETHERNET_DEVICE(0x1013),
59 INTEL_E1000_ETHERNET_DEVICE(0x1014),
60 INTEL_E1000_ETHERNET_DEVICE(0x1015),
61 INTEL_E1000_ETHERNET_DEVICE(0x1016),
62 INTEL_E1000_ETHERNET_DEVICE(0x1017),
63 INTEL_E1000_ETHERNET_DEVICE(0x1018),
64 INTEL_E1000_ETHERNET_DEVICE(0x1019),
65 INTEL_E1000_ETHERNET_DEVICE(0x101A),
66 INTEL_E1000_ETHERNET_DEVICE(0x101D),
67 INTEL_E1000_ETHERNET_DEVICE(0x101E),
68 INTEL_E1000_ETHERNET_DEVICE(0x1026),
69 INTEL_E1000_ETHERNET_DEVICE(0x1027),
70 INTEL_E1000_ETHERNET_DEVICE(0x1028),
71 INTEL_E1000_ETHERNET_DEVICE(0x1075),
72 INTEL_E1000_ETHERNET_DEVICE(0x1076),
73 INTEL_E1000_ETHERNET_DEVICE(0x1077),
74 INTEL_E1000_ETHERNET_DEVICE(0x1078),
75 INTEL_E1000_ETHERNET_DEVICE(0x1079),
76 INTEL_E1000_ETHERNET_DEVICE(0x107A),
77 INTEL_E1000_ETHERNET_DEVICE(0x107B),
78 INTEL_E1000_ETHERNET_DEVICE(0x107C),
79 INTEL_E1000_ETHERNET_DEVICE(0x108A),
80 INTEL_E1000_ETHERNET_DEVICE(0x1099),
81 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
82 /* required last entry */
86 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
88 int e1000_up(struct e1000_adapter
*adapter
);
89 void e1000_down(struct e1000_adapter
*adapter
);
90 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
91 void e1000_reset(struct e1000_adapter
*adapter
);
92 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
);
93 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
94 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
95 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
96 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
97 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
98 struct e1000_tx_ring
*txdr
);
99 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
100 struct e1000_rx_ring
*rxdr
);
101 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
102 struct e1000_tx_ring
*tx_ring
);
103 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
104 struct e1000_rx_ring
*rx_ring
);
105 void e1000_update_stats(struct e1000_adapter
*adapter
);
107 static int e1000_init_module(void);
108 static void e1000_exit_module(void);
109 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
110 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
111 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
112 static int e1000_sw_init(struct e1000_adapter
*adapter
);
113 static int e1000_open(struct net_device
*netdev
);
114 static int e1000_close(struct net_device
*netdev
);
115 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
116 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
117 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
118 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
119 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
120 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
121 struct e1000_tx_ring
*tx_ring
);
122 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
123 struct e1000_rx_ring
*rx_ring
);
124 static void e1000_set_rx_mode(struct net_device
*netdev
);
125 static void e1000_update_phy_info(unsigned long data
);
126 static void e1000_watchdog(unsigned long data
);
127 static void e1000_82547_tx_fifo_stall(unsigned long data
);
128 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
129 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
130 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
131 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
132 static irqreturn_t
e1000_intr(int irq
, void *data
);
133 static irqreturn_t
e1000_intr_msi(int irq
, void *data
);
134 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
135 struct e1000_tx_ring
*tx_ring
);
136 static int e1000_clean(struct napi_struct
*napi
, int budget
);
137 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
138 struct e1000_rx_ring
*rx_ring
,
139 int *work_done
, int work_to_do
);
140 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
141 struct e1000_rx_ring
*rx_ring
,
143 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
144 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
146 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
147 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
148 static void e1000_tx_timeout(struct net_device
*dev
);
149 static void e1000_reset_task(struct work_struct
*work
);
150 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
151 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
152 struct sk_buff
*skb
);
154 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
155 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
);
156 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
);
157 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
160 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
161 static int e1000_resume(struct pci_dev
*pdev
);
163 static void e1000_shutdown(struct pci_dev
*pdev
);
165 #ifdef CONFIG_NET_POLL_CONTROLLER
166 /* for netdump / net console */
167 static void e1000_netpoll (struct net_device
*netdev
);
170 #define COPYBREAK_DEFAULT 256
171 static unsigned int copybreak __read_mostly
= COPYBREAK_DEFAULT
;
172 module_param(copybreak
, uint
, 0644);
173 MODULE_PARM_DESC(copybreak
,
174 "Maximum size of packet that is copied to a new buffer on receive");
176 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
177 pci_channel_state_t state
);
178 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
179 static void e1000_io_resume(struct pci_dev
*pdev
);
181 static struct pci_error_handlers e1000_err_handler
= {
182 .error_detected
= e1000_io_error_detected
,
183 .slot_reset
= e1000_io_slot_reset
,
184 .resume
= e1000_io_resume
,
187 static struct pci_driver e1000_driver
= {
188 .name
= e1000_driver_name
,
189 .id_table
= e1000_pci_tbl
,
190 .probe
= e1000_probe
,
191 .remove
= __devexit_p(e1000_remove
),
193 /* Power Managment Hooks */
194 .suspend
= e1000_suspend
,
195 .resume
= e1000_resume
,
197 .shutdown
= e1000_shutdown
,
198 .err_handler
= &e1000_err_handler
201 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
202 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
203 MODULE_LICENSE("GPL");
204 MODULE_VERSION(DRV_VERSION
);
206 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
207 module_param(debug
, int, 0);
208 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
211 * e1000_init_module - Driver Registration Routine
213 * e1000_init_module is the first routine called when the driver is
214 * loaded. All it does is register with the PCI subsystem.
217 static int __init
e1000_init_module(void)
220 printk(KERN_INFO
"%s - version %s\n",
221 e1000_driver_string
, e1000_driver_version
);
223 printk(KERN_INFO
"%s\n", e1000_copyright
);
225 ret
= pci_register_driver(&e1000_driver
);
226 if (copybreak
!= COPYBREAK_DEFAULT
) {
228 printk(KERN_INFO
"e1000: copybreak disabled\n");
230 printk(KERN_INFO
"e1000: copybreak enabled for "
231 "packets <= %u bytes\n", copybreak
);
236 module_init(e1000_init_module
);
239 * e1000_exit_module - Driver Exit Cleanup Routine
241 * e1000_exit_module is called just before the driver is removed
245 static void __exit
e1000_exit_module(void)
247 pci_unregister_driver(&e1000_driver
);
250 module_exit(e1000_exit_module
);
252 static int e1000_request_irq(struct e1000_adapter
*adapter
)
254 struct e1000_hw
*hw
= &adapter
->hw
;
255 struct net_device
*netdev
= adapter
->netdev
;
256 irq_handler_t handler
= e1000_intr
;
257 int irq_flags
= IRQF_SHARED
;
260 if (hw
->mac_type
>= e1000_82571
) {
261 adapter
->have_msi
= !pci_enable_msi(adapter
->pdev
);
262 if (adapter
->have_msi
) {
263 handler
= e1000_intr_msi
;
268 err
= request_irq(adapter
->pdev
->irq
, handler
, irq_flags
, netdev
->name
,
271 if (adapter
->have_msi
)
272 pci_disable_msi(adapter
->pdev
);
274 "Unable to allocate interrupt Error: %d\n", err
);
280 static void e1000_free_irq(struct e1000_adapter
*adapter
)
282 struct net_device
*netdev
= adapter
->netdev
;
284 free_irq(adapter
->pdev
->irq
, netdev
);
286 if (adapter
->have_msi
)
287 pci_disable_msi(adapter
->pdev
);
291 * e1000_irq_disable - Mask off interrupt generation on the NIC
292 * @adapter: board private structure
295 static void e1000_irq_disable(struct e1000_adapter
*adapter
)
297 struct e1000_hw
*hw
= &adapter
->hw
;
301 synchronize_irq(adapter
->pdev
->irq
);
305 * e1000_irq_enable - Enable default interrupt generation settings
306 * @adapter: board private structure
309 static void e1000_irq_enable(struct e1000_adapter
*adapter
)
311 struct e1000_hw
*hw
= &adapter
->hw
;
313 ew32(IMS
, IMS_ENABLE_MASK
);
317 static void e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
319 struct e1000_hw
*hw
= &adapter
->hw
;
320 struct net_device
*netdev
= adapter
->netdev
;
321 u16 vid
= hw
->mng_cookie
.vlan_id
;
322 u16 old_vid
= adapter
->mng_vlan_id
;
323 if (adapter
->vlgrp
) {
324 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
325 if (hw
->mng_cookie
.status
&
326 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
327 e1000_vlan_rx_add_vid(netdev
, vid
);
328 adapter
->mng_vlan_id
= vid
;
330 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
332 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
334 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
335 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
337 adapter
->mng_vlan_id
= vid
;
342 * e1000_release_hw_control - release control of the h/w to f/w
343 * @adapter: address of board private structure
345 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
346 * For ASF and Pass Through versions of f/w this means that the
347 * driver is no longer loaded. For AMT version (only with 82573) i
348 * of the f/w this means that the network i/f is closed.
352 static void e1000_release_hw_control(struct e1000_adapter
*adapter
)
356 struct e1000_hw
*hw
= &adapter
->hw
;
358 /* Let firmware taken over control of h/w */
359 switch (hw
->mac_type
) {
362 ew32(SWSM
, swsm
& ~E1000_SWSM_DRV_LOAD
);
366 case e1000_80003es2lan
:
368 ctrl_ext
= er32(CTRL_EXT
);
369 ew32(CTRL_EXT
, ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
377 * e1000_get_hw_control - get control of the h/w from f/w
378 * @adapter: address of board private structure
380 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
381 * For ASF and Pass Through versions of f/w this means that
382 * the driver is loaded. For AMT version (only with 82573)
383 * of the f/w this means that the network i/f is open.
387 static void e1000_get_hw_control(struct e1000_adapter
*adapter
)
391 struct e1000_hw
*hw
= &adapter
->hw
;
393 /* Let firmware know the driver has taken over */
394 switch (hw
->mac_type
) {
397 ew32(SWSM
, swsm
| E1000_SWSM_DRV_LOAD
);
401 case e1000_80003es2lan
:
403 ctrl_ext
= er32(CTRL_EXT
);
404 ew32(CTRL_EXT
, ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
411 static void e1000_init_manageability(struct e1000_adapter
*adapter
)
413 struct e1000_hw
*hw
= &adapter
->hw
;
415 if (adapter
->en_mng_pt
) {
416 u32 manc
= er32(MANC
);
418 /* disable hardware interception of ARP */
419 manc
&= ~(E1000_MANC_ARP_EN
);
421 /* enable receiving management packets to the host */
422 /* this will probably generate destination unreachable messages
423 * from the host OS, but the packets will be handled on SMBUS */
424 if (hw
->has_manc2h
) {
425 u32 manc2h
= er32(MANC2H
);
427 manc
|= E1000_MANC_EN_MNG2HOST
;
428 #define E1000_MNG2HOST_PORT_623 (1 << 5)
429 #define E1000_MNG2HOST_PORT_664 (1 << 6)
430 manc2h
|= E1000_MNG2HOST_PORT_623
;
431 manc2h
|= E1000_MNG2HOST_PORT_664
;
432 ew32(MANC2H
, manc2h
);
439 static void e1000_release_manageability(struct e1000_adapter
*adapter
)
441 struct e1000_hw
*hw
= &adapter
->hw
;
443 if (adapter
->en_mng_pt
) {
444 u32 manc
= er32(MANC
);
446 /* re-enable hardware interception of ARP */
447 manc
|= E1000_MANC_ARP_EN
;
450 manc
&= ~E1000_MANC_EN_MNG2HOST
;
452 /* don't explicitly have to mess with MANC2H since
453 * MANC has an enable disable that gates MANC2H */
460 * e1000_configure - configure the hardware for RX and TX
461 * @adapter = private board structure
463 static void e1000_configure(struct e1000_adapter
*adapter
)
465 struct net_device
*netdev
= adapter
->netdev
;
468 e1000_set_rx_mode(netdev
);
470 e1000_restore_vlan(adapter
);
471 e1000_init_manageability(adapter
);
473 e1000_configure_tx(adapter
);
474 e1000_setup_rctl(adapter
);
475 e1000_configure_rx(adapter
);
476 /* call E1000_DESC_UNUSED which always leaves
477 * at least 1 descriptor unused to make sure
478 * next_to_use != next_to_clean */
479 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
480 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
481 adapter
->alloc_rx_buf(adapter
, ring
,
482 E1000_DESC_UNUSED(ring
));
485 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
488 int e1000_up(struct e1000_adapter
*adapter
)
490 struct e1000_hw
*hw
= &adapter
->hw
;
492 /* hardware has been reset, we need to reload some things */
493 e1000_configure(adapter
);
495 clear_bit(__E1000_DOWN
, &adapter
->flags
);
497 napi_enable(&adapter
->napi
);
499 e1000_irq_enable(adapter
);
501 netif_wake_queue(adapter
->netdev
);
503 /* fire a link change interrupt to start the watchdog */
504 ew32(ICS
, E1000_ICS_LSC
);
509 * e1000_power_up_phy - restore link in case the phy was powered down
510 * @adapter: address of board private structure
512 * The phy may be powered down to save power and turn off link when the
513 * driver is unloaded and wake on lan is not enabled (among others)
514 * *** this routine MUST be followed by a call to e1000_reset ***
518 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
520 struct e1000_hw
*hw
= &adapter
->hw
;
523 /* Just clear the power down bit to wake the phy back up */
524 if (hw
->media_type
== e1000_media_type_copper
) {
525 /* according to the manual, the phy will retain its
526 * settings across a power-down/up cycle */
527 e1000_read_phy_reg(hw
, PHY_CTRL
, &mii_reg
);
528 mii_reg
&= ~MII_CR_POWER_DOWN
;
529 e1000_write_phy_reg(hw
, PHY_CTRL
, mii_reg
);
533 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
535 struct e1000_hw
*hw
= &adapter
->hw
;
537 /* Power down the PHY so no link is implied when interface is down *
538 * The PHY cannot be powered down if any of the following is true *
541 * (c) SoL/IDER session is active */
542 if (!adapter
->wol
&& hw
->mac_type
>= e1000_82540
&&
543 hw
->media_type
== e1000_media_type_copper
) {
546 switch (hw
->mac_type
) {
549 case e1000_82545_rev_3
:
551 case e1000_82546_rev_3
:
553 case e1000_82541_rev_2
:
555 case e1000_82547_rev_2
:
556 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
562 case e1000_80003es2lan
:
564 if (e1000_check_mng_mode(hw
) ||
565 e1000_check_phy_reset_block(hw
))
571 e1000_read_phy_reg(hw
, PHY_CTRL
, &mii_reg
);
572 mii_reg
|= MII_CR_POWER_DOWN
;
573 e1000_write_phy_reg(hw
, PHY_CTRL
, mii_reg
);
580 void e1000_down(struct e1000_adapter
*adapter
)
582 struct e1000_hw
*hw
= &adapter
->hw
;
583 struct net_device
*netdev
= adapter
->netdev
;
586 /* signal that we're down so the interrupt handler does not
587 * reschedule our watchdog timer */
588 set_bit(__E1000_DOWN
, &adapter
->flags
);
590 /* disable receives in the hardware */
592 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
593 /* flush and sleep below */
595 /* can be netif_tx_disable when NETIF_F_LLTX is removed */
596 netif_stop_queue(netdev
);
598 /* disable transmits in the hardware */
600 tctl
&= ~E1000_TCTL_EN
;
602 /* flush both disables and wait for them to finish */
606 napi_disable(&adapter
->napi
);
608 e1000_irq_disable(adapter
);
610 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
611 del_timer_sync(&adapter
->watchdog_timer
);
612 del_timer_sync(&adapter
->phy_info_timer
);
614 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
615 adapter
->link_speed
= 0;
616 adapter
->link_duplex
= 0;
617 netif_carrier_off(netdev
);
619 e1000_reset(adapter
);
620 e1000_clean_all_tx_rings(adapter
);
621 e1000_clean_all_rx_rings(adapter
);
624 void e1000_reinit_locked(struct e1000_adapter
*adapter
)
626 WARN_ON(in_interrupt());
627 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
631 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
634 void e1000_reset(struct e1000_adapter
*adapter
)
636 struct e1000_hw
*hw
= &adapter
->hw
;
637 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
638 u16 fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
639 bool legacy_pba_adjust
= false;
641 /* Repartition Pba for greater than 9k mtu
642 * To take effect CTRL.RST is required.
645 switch (hw
->mac_type
) {
646 case e1000_82542_rev2_0
:
647 case e1000_82542_rev2_1
:
652 case e1000_82541_rev_2
:
653 legacy_pba_adjust
= true;
657 case e1000_82545_rev_3
:
659 case e1000_82546_rev_3
:
663 case e1000_82547_rev_2
:
664 legacy_pba_adjust
= true;
669 case e1000_80003es2lan
:
677 case e1000_undefined
:
682 if (legacy_pba_adjust
) {
683 if (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
)
684 pba
-= 8; /* allocate more FIFO for Tx */
686 if (hw
->mac_type
== e1000_82547
) {
687 adapter
->tx_fifo_head
= 0;
688 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
689 adapter
->tx_fifo_size
=
690 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
691 atomic_set(&adapter
->tx_fifo_stall
, 0);
693 } else if (hw
->max_frame_size
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
694 /* adjust PBA for jumbo frames */
697 /* To maintain wire speed transmits, the Tx FIFO should be
698 * large enough to accomodate two full transmit packets,
699 * rounded up to the next 1KB and expressed in KB. Likewise,
700 * the Rx FIFO should be large enough to accomodate at least
701 * one full receive packet and is similarly rounded up and
702 * expressed in KB. */
704 /* upper 16 bits has Tx packet buffer allocation size in KB */
705 tx_space
= pba
>> 16;
706 /* lower 16 bits has Rx packet buffer allocation size in KB */
708 /* don't include ethernet FCS because hardware appends/strips */
709 min_rx_space
= adapter
->netdev
->mtu
+ ENET_HEADER_SIZE
+
711 min_tx_space
= min_rx_space
;
713 min_tx_space
= ALIGN(min_tx_space
, 1024);
715 min_rx_space
= ALIGN(min_rx_space
, 1024);
718 /* If current Tx allocation is less than the min Tx FIFO size,
719 * and the min Tx FIFO size is less than the current Rx FIFO
720 * allocation, take space away from current Rx allocation */
721 if (tx_space
< min_tx_space
&&
722 ((min_tx_space
- tx_space
) < pba
)) {
723 pba
= pba
- (min_tx_space
- tx_space
);
725 /* PCI/PCIx hardware has PBA alignment constraints */
726 switch (hw
->mac_type
) {
727 case e1000_82545
... e1000_82546_rev_3
:
728 pba
&= ~(E1000_PBA_8K
- 1);
734 /* if short on rx space, rx wins and must trump tx
735 * adjustment or use Early Receive if available */
736 if (pba
< min_rx_space
) {
737 switch (hw
->mac_type
) {
739 /* ERT enabled in e1000_configure_rx */
751 /* flow control settings */
752 /* Set the FC high water mark to 90% of the FIFO size.
753 * Required to clear last 3 LSB */
754 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
755 /* We can't use 90% on small FIFOs because the remainder
756 * would be less than 1 full frame. In this case, we size
757 * it to allow at least a full frame above the high water
759 if (pba
< E1000_PBA_16K
)
760 fc_high_water_mark
= (pba
* 1024) - 1600;
762 hw
->fc_high_water
= fc_high_water_mark
;
763 hw
->fc_low_water
= fc_high_water_mark
- 8;
764 if (hw
->mac_type
== e1000_80003es2lan
)
765 hw
->fc_pause_time
= 0xFFFF;
767 hw
->fc_pause_time
= E1000_FC_PAUSE_TIME
;
769 hw
->fc
= hw
->original_fc
;
771 /* Allow time for pending master requests to run */
773 if (hw
->mac_type
>= e1000_82544
)
776 if (e1000_init_hw(hw
))
777 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
778 e1000_update_mng_vlan(adapter
);
780 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
781 if (hw
->mac_type
>= e1000_82544
&&
782 hw
->mac_type
<= e1000_82547_rev_2
&&
784 hw
->autoneg_advertised
== ADVERTISE_1000_FULL
) {
785 u32 ctrl
= er32(CTRL
);
786 /* clear phy power management bit if we are in gig only mode,
787 * which if enabled will attempt negotiation to 100Mb, which
788 * can cause a loss of link at power off or driver unload */
789 ctrl
&= ~E1000_CTRL_SWDPIN3
;
793 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
794 ew32(VET
, ETHERNET_IEEE_VLAN_TYPE
);
796 e1000_reset_adaptive(hw
);
797 e1000_phy_get_info(hw
, &adapter
->phy_info
);
799 if (!adapter
->smart_power_down
&&
800 (hw
->mac_type
== e1000_82571
||
801 hw
->mac_type
== e1000_82572
)) {
803 /* speed up time to link by disabling smart power down, ignore
804 * the return value of this function because there is nothing
805 * different we would do if it failed */
806 e1000_read_phy_reg(hw
, IGP02E1000_PHY_POWER_MGMT
,
808 phy_data
&= ~IGP02E1000_PM_SPD
;
809 e1000_write_phy_reg(hw
, IGP02E1000_PHY_POWER_MGMT
,
813 e1000_release_manageability(adapter
);
817 * Dump the eeprom for users having checksum issues
819 static void e1000_dump_eeprom(struct e1000_adapter
*adapter
)
821 struct net_device
*netdev
= adapter
->netdev
;
822 struct ethtool_eeprom eeprom
;
823 const struct ethtool_ops
*ops
= netdev
->ethtool_ops
;
826 u16 csum_old
, csum_new
= 0;
828 eeprom
.len
= ops
->get_eeprom_len(netdev
);
831 data
= kmalloc(eeprom
.len
, GFP_KERNEL
);
833 printk(KERN_ERR
"Unable to allocate memory to dump EEPROM"
838 ops
->get_eeprom(netdev
, &eeprom
, data
);
840 csum_old
= (data
[EEPROM_CHECKSUM_REG
* 2]) +
841 (data
[EEPROM_CHECKSUM_REG
* 2 + 1] << 8);
842 for (i
= 0; i
< EEPROM_CHECKSUM_REG
* 2; i
+= 2)
843 csum_new
+= data
[i
] + (data
[i
+ 1] << 8);
844 csum_new
= EEPROM_SUM
- csum_new
;
846 printk(KERN_ERR
"/*********************/\n");
847 printk(KERN_ERR
"Current EEPROM Checksum : 0x%04x\n", csum_old
);
848 printk(KERN_ERR
"Calculated : 0x%04x\n", csum_new
);
850 printk(KERN_ERR
"Offset Values\n");
851 printk(KERN_ERR
"======== ======\n");
852 print_hex_dump(KERN_ERR
, "", DUMP_PREFIX_OFFSET
, 16, 1, data
, 128, 0);
854 printk(KERN_ERR
"Include this output when contacting your support "
856 printk(KERN_ERR
"This is not a software error! Something bad "
857 "happened to your hardware or\n");
858 printk(KERN_ERR
"EEPROM image. Ignoring this "
859 "problem could result in further problems,\n");
860 printk(KERN_ERR
"possibly loss of data, corruption or system hangs!\n");
861 printk(KERN_ERR
"The MAC Address will be reset to 00:00:00:00:00:00, "
862 "which is invalid\n");
863 printk(KERN_ERR
"and requires you to set the proper MAC "
864 "address manually before continuing\n");
865 printk(KERN_ERR
"to enable this network device.\n");
866 printk(KERN_ERR
"Please inspect the EEPROM dump and report the issue "
867 "to your hardware vendor\n");
868 printk(KERN_ERR
"or Intel Customer Support.\n");
869 printk(KERN_ERR
"/*********************/\n");
875 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not
876 * @pdev: PCI device information struct
878 * Return true if an adapter needs ioport resources
880 static int e1000_is_need_ioport(struct pci_dev
*pdev
)
882 switch (pdev
->device
) {
883 case E1000_DEV_ID_82540EM
:
884 case E1000_DEV_ID_82540EM_LOM
:
885 case E1000_DEV_ID_82540EP
:
886 case E1000_DEV_ID_82540EP_LOM
:
887 case E1000_DEV_ID_82540EP_LP
:
888 case E1000_DEV_ID_82541EI
:
889 case E1000_DEV_ID_82541EI_MOBILE
:
890 case E1000_DEV_ID_82541ER
:
891 case E1000_DEV_ID_82541ER_LOM
:
892 case E1000_DEV_ID_82541GI
:
893 case E1000_DEV_ID_82541GI_LF
:
894 case E1000_DEV_ID_82541GI_MOBILE
:
895 case E1000_DEV_ID_82544EI_COPPER
:
896 case E1000_DEV_ID_82544EI_FIBER
:
897 case E1000_DEV_ID_82544GC_COPPER
:
898 case E1000_DEV_ID_82544GC_LOM
:
899 case E1000_DEV_ID_82545EM_COPPER
:
900 case E1000_DEV_ID_82545EM_FIBER
:
901 case E1000_DEV_ID_82546EB_COPPER
:
902 case E1000_DEV_ID_82546EB_FIBER
:
903 case E1000_DEV_ID_82546EB_QUAD_COPPER
:
910 static const struct net_device_ops e1000_netdev_ops
= {
911 .ndo_open
= e1000_open
,
912 .ndo_stop
= e1000_close
,
913 .ndo_start_xmit
= e1000_xmit_frame
,
914 .ndo_get_stats
= e1000_get_stats
,
915 .ndo_set_rx_mode
= e1000_set_rx_mode
,
916 .ndo_set_mac_address
= e1000_set_mac
,
917 .ndo_tx_timeout
= e1000_tx_timeout
,
918 .ndo_change_mtu
= e1000_change_mtu
,
919 .ndo_do_ioctl
= e1000_ioctl
,
920 .ndo_validate_addr
= eth_validate_addr
,
922 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
923 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
924 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
925 #ifdef CONFIG_NET_POLL_CONTROLLER
926 .ndo_poll_controller
= e1000_netpoll
,
931 * e1000_probe - Device Initialization Routine
932 * @pdev: PCI device information struct
933 * @ent: entry in e1000_pci_tbl
935 * Returns 0 on success, negative on failure
937 * e1000_probe initializes an adapter identified by a pci_dev structure.
938 * The OS initialization, configuring of the adapter private structure,
939 * and a hardware reset occur.
941 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
942 const struct pci_device_id
*ent
)
944 struct net_device
*netdev
;
945 struct e1000_adapter
*adapter
;
948 static int cards_found
= 0;
949 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
950 int i
, err
, pci_using_dac
;
952 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
953 int bars
, need_ioport
;
955 /* do not allocate ioport bars when not needed */
956 need_ioport
= e1000_is_need_ioport(pdev
);
958 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
959 err
= pci_enable_device(pdev
);
961 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
962 err
= pci_enable_device_mem(pdev
);
967 if (!pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)) &&
968 !pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64))) {
971 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
973 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
975 E1000_ERR("No usable DMA configuration, "
983 err
= pci_request_selected_regions(pdev
, bars
, e1000_driver_name
);
987 pci_set_master(pdev
);
990 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
992 goto err_alloc_etherdev
;
994 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
996 pci_set_drvdata(pdev
, netdev
);
997 adapter
= netdev_priv(netdev
);
998 adapter
->netdev
= netdev
;
999 adapter
->pdev
= pdev
;
1000 adapter
->msg_enable
= (1 << debug
) - 1;
1001 adapter
->bars
= bars
;
1002 adapter
->need_ioport
= need_ioport
;
1008 hw
->hw_addr
= pci_ioremap_bar(pdev
, BAR_0
);
1012 if (adapter
->need_ioport
) {
1013 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
1014 if (pci_resource_len(pdev
, i
) == 0)
1016 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
1017 hw
->io_base
= pci_resource_start(pdev
, i
);
1023 netdev
->netdev_ops
= &e1000_netdev_ops
;
1024 e1000_set_ethtool_ops(netdev
);
1025 netdev
->watchdog_timeo
= 5 * HZ
;
1026 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
1028 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1030 adapter
->bd_number
= cards_found
;
1032 /* setup the private structure */
1034 err
= e1000_sw_init(adapter
);
1039 /* Flash BAR mapping must happen after e1000_sw_init
1040 * because it depends on mac_type */
1041 if ((hw
->mac_type
== e1000_ich8lan
) &&
1042 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
1043 hw
->flash_address
= pci_ioremap_bar(pdev
, 1);
1044 if (!hw
->flash_address
)
1048 if (e1000_check_phy_reset_block(hw
))
1049 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
1051 if (hw
->mac_type
>= e1000_82543
) {
1052 netdev
->features
= NETIF_F_SG
|
1054 NETIF_F_HW_VLAN_TX
|
1055 NETIF_F_HW_VLAN_RX
|
1056 NETIF_F_HW_VLAN_FILTER
;
1057 if (hw
->mac_type
== e1000_ich8lan
)
1058 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
1061 if ((hw
->mac_type
>= e1000_82544
) &&
1062 (hw
->mac_type
!= e1000_82547
))
1063 netdev
->features
|= NETIF_F_TSO
;
1065 if (hw
->mac_type
> e1000_82547_rev_2
)
1066 netdev
->features
|= NETIF_F_TSO6
;
1068 netdev
->features
|= NETIF_F_HIGHDMA
;
1070 netdev
->vlan_features
|= NETIF_F_TSO
;
1071 netdev
->vlan_features
|= NETIF_F_TSO6
;
1072 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1073 netdev
->vlan_features
|= NETIF_F_SG
;
1075 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(hw
);
1077 /* initialize eeprom parameters */
1078 if (e1000_init_eeprom_params(hw
)) {
1079 E1000_ERR("EEPROM initialization failed\n");
1083 /* before reading the EEPROM, reset the controller to
1084 * put the device in a known good starting state */
1088 /* make sure the EEPROM is good */
1089 if (e1000_validate_eeprom_checksum(hw
) < 0) {
1090 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
1091 e1000_dump_eeprom(adapter
);
1093 * set MAC address to all zeroes to invalidate and temporary
1094 * disable this device for the user. This blocks regular
1095 * traffic while still permitting ethtool ioctls from reaching
1096 * the hardware as well as allowing the user to run the
1097 * interface after manually setting a hw addr using
1100 memset(hw
->mac_addr
, 0, netdev
->addr_len
);
1102 /* copy the MAC address out of the EEPROM */
1103 if (e1000_read_mac_addr(hw
))
1104 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
1106 /* don't block initalization here due to bad MAC address */
1107 memcpy(netdev
->dev_addr
, hw
->mac_addr
, netdev
->addr_len
);
1108 memcpy(netdev
->perm_addr
, hw
->mac_addr
, netdev
->addr_len
);
1110 if (!is_valid_ether_addr(netdev
->perm_addr
))
1111 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
1113 e1000_get_bus_info(hw
);
1115 init_timer(&adapter
->tx_fifo_stall_timer
);
1116 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
1117 adapter
->tx_fifo_stall_timer
.data
= (unsigned long)adapter
;
1119 init_timer(&adapter
->watchdog_timer
);
1120 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
1121 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1123 init_timer(&adapter
->phy_info_timer
);
1124 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
1125 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
1127 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
1129 e1000_check_options(adapter
);
1131 /* Initial Wake on LAN setting
1132 * If APM wake is enabled in the EEPROM,
1133 * enable the ACPI Magic Packet filter
1136 switch (hw
->mac_type
) {
1137 case e1000_82542_rev2_0
:
1138 case e1000_82542_rev2_1
:
1142 e1000_read_eeprom(hw
,
1143 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
1144 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
1147 e1000_read_eeprom(hw
,
1148 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
1149 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
1152 case e1000_82546_rev_3
:
1154 case e1000_80003es2lan
:
1155 if (er32(STATUS
) & E1000_STATUS_FUNC_1
){
1156 e1000_read_eeprom(hw
,
1157 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1162 e1000_read_eeprom(hw
,
1163 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1166 if (eeprom_data
& eeprom_apme_mask
)
1167 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1169 /* now that we have the eeprom settings, apply the special cases
1170 * where the eeprom may be wrong or the board simply won't support
1171 * wake on lan on a particular port */
1172 switch (pdev
->device
) {
1173 case E1000_DEV_ID_82546GB_PCIE
:
1174 adapter
->eeprom_wol
= 0;
1176 case E1000_DEV_ID_82546EB_FIBER
:
1177 case E1000_DEV_ID_82546GB_FIBER
:
1178 case E1000_DEV_ID_82571EB_FIBER
:
1179 /* Wake events only supported on port A for dual fiber
1180 * regardless of eeprom setting */
1181 if (er32(STATUS
) & E1000_STATUS_FUNC_1
)
1182 adapter
->eeprom_wol
= 0;
1184 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
1185 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
1186 case E1000_DEV_ID_82571EB_QUAD_FIBER
:
1187 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
1188 case E1000_DEV_ID_82571PT_QUAD_COPPER
:
1189 /* if quad port adapter, disable WoL on all but port A */
1190 if (global_quad_port_a
!= 0)
1191 adapter
->eeprom_wol
= 0;
1193 adapter
->quad_port_a
= 1;
1194 /* Reset for multiple quad port adapters */
1195 if (++global_quad_port_a
== 4)
1196 global_quad_port_a
= 0;
1200 /* initialize the wol settings based on the eeprom settings */
1201 adapter
->wol
= adapter
->eeprom_wol
;
1202 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1204 /* print bus type/speed/width info */
1205 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1206 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1207 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1208 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1209 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1210 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1211 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1212 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1213 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1214 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1215 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1218 printk("%pM\n", netdev
->dev_addr
);
1220 if (hw
->bus_type
== e1000_bus_type_pci_express
) {
1221 DPRINTK(PROBE
, WARNING
, "This device (id %04x:%04x) will no "
1222 "longer be supported by this driver in the future.\n",
1223 pdev
->vendor
, pdev
->device
);
1224 DPRINTK(PROBE
, WARNING
, "please use the \"e1000e\" "
1225 "driver instead.\n");
1228 /* reset the hardware with the new settings */
1229 e1000_reset(adapter
);
1231 /* If the controller is 82573 and f/w is AMT, do not set
1232 * DRV_LOAD until the interface is up. For all other cases,
1233 * let the f/w know that the h/w is now under the control
1235 if (hw
->mac_type
!= e1000_82573
||
1236 !e1000_check_mng_mode(hw
))
1237 e1000_get_hw_control(adapter
);
1239 strcpy(netdev
->name
, "eth%d");
1240 err
= register_netdev(netdev
);
1244 /* carrier off reporting is important to ethtool even BEFORE open */
1245 netif_carrier_off(netdev
);
1247 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1253 e1000_release_hw_control(adapter
);
1255 if (!e1000_check_phy_reset_block(hw
))
1256 e1000_phy_hw_reset(hw
);
1258 if (hw
->flash_address
)
1259 iounmap(hw
->flash_address
);
1261 kfree(adapter
->tx_ring
);
1262 kfree(adapter
->rx_ring
);
1264 iounmap(hw
->hw_addr
);
1266 free_netdev(netdev
);
1268 pci_release_selected_regions(pdev
, bars
);
1271 pci_disable_device(pdev
);
1276 * e1000_remove - Device Removal Routine
1277 * @pdev: PCI device information struct
1279 * e1000_remove is called by the PCI subsystem to alert the driver
1280 * that it should release a PCI device. The could be caused by a
1281 * Hot-Plug event, or because the driver is going to be removed from
1285 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
1287 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1288 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1289 struct e1000_hw
*hw
= &adapter
->hw
;
1291 cancel_work_sync(&adapter
->reset_task
);
1293 e1000_release_manageability(adapter
);
1295 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1296 * would have already happened in close and is redundant. */
1297 e1000_release_hw_control(adapter
);
1299 unregister_netdev(netdev
);
1301 if (!e1000_check_phy_reset_block(hw
))
1302 e1000_phy_hw_reset(hw
);
1304 kfree(adapter
->tx_ring
);
1305 kfree(adapter
->rx_ring
);
1307 iounmap(hw
->hw_addr
);
1308 if (hw
->flash_address
)
1309 iounmap(hw
->flash_address
);
1310 pci_release_selected_regions(pdev
, adapter
->bars
);
1312 free_netdev(netdev
);
1314 pci_disable_device(pdev
);
1318 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1319 * @adapter: board private structure to initialize
1321 * e1000_sw_init initializes the Adapter private data structure.
1322 * Fields are initialized based on PCI device information and
1323 * OS network device settings (MTU size).
1326 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
1328 struct e1000_hw
*hw
= &adapter
->hw
;
1329 struct net_device
*netdev
= adapter
->netdev
;
1330 struct pci_dev
*pdev
= adapter
->pdev
;
1332 /* PCI config space info */
1334 hw
->vendor_id
= pdev
->vendor
;
1335 hw
->device_id
= pdev
->device
;
1336 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1337 hw
->subsystem_id
= pdev
->subsystem_device
;
1338 hw
->revision_id
= pdev
->revision
;
1340 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1342 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1343 hw
->max_frame_size
= netdev
->mtu
+
1344 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1345 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1347 /* identify the MAC */
1349 if (e1000_set_mac_type(hw
)) {
1350 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1354 switch (hw
->mac_type
) {
1359 case e1000_82541_rev_2
:
1360 case e1000_82547_rev_2
:
1361 hw
->phy_init_script
= 1;
1365 e1000_set_media_type(hw
);
1367 hw
->wait_autoneg_complete
= false;
1368 hw
->tbi_compatibility_en
= true;
1369 hw
->adaptive_ifs
= true;
1371 /* Copper options */
1373 if (hw
->media_type
== e1000_media_type_copper
) {
1374 hw
->mdix
= AUTO_ALL_MODES
;
1375 hw
->disable_polarity_correction
= false;
1376 hw
->master_slave
= E1000_MASTER_SLAVE
;
1379 adapter
->num_tx_queues
= 1;
1380 adapter
->num_rx_queues
= 1;
1382 if (e1000_alloc_queues(adapter
)) {
1383 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1387 /* Explicitly disable IRQ since the NIC can be in any state. */
1388 e1000_irq_disable(adapter
);
1390 spin_lock_init(&adapter
->stats_lock
);
1392 set_bit(__E1000_DOWN
, &adapter
->flags
);
1398 * e1000_alloc_queues - Allocate memory for all rings
1399 * @adapter: board private structure to initialize
1401 * We allocate one ring per queue at run-time since we don't know the
1402 * number of queues at compile-time.
1405 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1407 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1408 sizeof(struct e1000_tx_ring
), GFP_KERNEL
);
1409 if (!adapter
->tx_ring
)
1412 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1413 sizeof(struct e1000_rx_ring
), GFP_KERNEL
);
1414 if (!adapter
->rx_ring
) {
1415 kfree(adapter
->tx_ring
);
1419 return E1000_SUCCESS
;
1423 * e1000_open - Called when a network interface is made active
1424 * @netdev: network interface device structure
1426 * Returns 0 on success, negative value on failure
1428 * The open entry point is called when a network interface is made
1429 * active by the system (IFF_UP). At this point all resources needed
1430 * for transmit and receive operations are allocated, the interrupt
1431 * handler is registered with the OS, the watchdog timer is started,
1432 * and the stack is notified that the interface is ready.
1435 static int e1000_open(struct net_device
*netdev
)
1437 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1438 struct e1000_hw
*hw
= &adapter
->hw
;
1441 /* disallow open during test */
1442 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1445 netif_carrier_off(netdev
);
1447 /* allocate transmit descriptors */
1448 err
= e1000_setup_all_tx_resources(adapter
);
1452 /* allocate receive descriptors */
1453 err
= e1000_setup_all_rx_resources(adapter
);
1457 e1000_power_up_phy(adapter
);
1459 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1460 if ((hw
->mng_cookie
.status
&
1461 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1462 e1000_update_mng_vlan(adapter
);
1465 /* If AMT is enabled, let the firmware know that the network
1466 * interface is now open */
1467 if (hw
->mac_type
== e1000_82573
&&
1468 e1000_check_mng_mode(hw
))
1469 e1000_get_hw_control(adapter
);
1471 /* before we allocate an interrupt, we must be ready to handle it.
1472 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1473 * as soon as we call pci_request_irq, so we have to setup our
1474 * clean_rx handler before we do so. */
1475 e1000_configure(adapter
);
1477 err
= e1000_request_irq(adapter
);
1481 /* From here on the code is the same as e1000_up() */
1482 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1484 napi_enable(&adapter
->napi
);
1486 e1000_irq_enable(adapter
);
1488 netif_start_queue(netdev
);
1490 /* fire a link status change interrupt to start the watchdog */
1491 ew32(ICS
, E1000_ICS_LSC
);
1493 return E1000_SUCCESS
;
1496 e1000_release_hw_control(adapter
);
1497 e1000_power_down_phy(adapter
);
1498 e1000_free_all_rx_resources(adapter
);
1500 e1000_free_all_tx_resources(adapter
);
1502 e1000_reset(adapter
);
1508 * e1000_close - Disables a network interface
1509 * @netdev: network interface device structure
1511 * Returns 0, this is not allowed to fail
1513 * The close entry point is called when an interface is de-activated
1514 * by the OS. The hardware is still under the drivers control, but
1515 * needs to be disabled. A global MAC reset is issued to stop the
1516 * hardware, and all transmit and receive resources are freed.
1519 static int e1000_close(struct net_device
*netdev
)
1521 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1522 struct e1000_hw
*hw
= &adapter
->hw
;
1524 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1525 e1000_down(adapter
);
1526 e1000_power_down_phy(adapter
);
1527 e1000_free_irq(adapter
);
1529 e1000_free_all_tx_resources(adapter
);
1530 e1000_free_all_rx_resources(adapter
);
1532 /* kill manageability vlan ID if supported, but not if a vlan with
1533 * the same ID is registered on the host OS (let 8021q kill it) */
1534 if ((hw
->mng_cookie
.status
&
1535 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1537 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1538 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1541 /* If AMT is enabled, let the firmware know that the network
1542 * interface is now closed */
1543 if (hw
->mac_type
== e1000_82573
&&
1544 e1000_check_mng_mode(hw
))
1545 e1000_release_hw_control(adapter
);
1551 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1552 * @adapter: address of board private structure
1553 * @start: address of beginning of memory
1554 * @len: length of memory
1556 static bool e1000_check_64k_bound(struct e1000_adapter
*adapter
, void *start
,
1559 struct e1000_hw
*hw
= &adapter
->hw
;
1560 unsigned long begin
= (unsigned long)start
;
1561 unsigned long end
= begin
+ len
;
1563 /* First rev 82545 and 82546 need to not allow any memory
1564 * write location to cross 64k boundary due to errata 23 */
1565 if (hw
->mac_type
== e1000_82545
||
1566 hw
->mac_type
== e1000_82546
) {
1567 return ((begin
^ (end
- 1)) >> 16) != 0 ? false : true;
1574 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1575 * @adapter: board private structure
1576 * @txdr: tx descriptor ring (for a specific queue) to setup
1578 * Return 0 on success, negative on failure
1581 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1582 struct e1000_tx_ring
*txdr
)
1584 struct pci_dev
*pdev
= adapter
->pdev
;
1587 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1588 txdr
->buffer_info
= vmalloc(size
);
1589 if (!txdr
->buffer_info
) {
1591 "Unable to allocate memory for the transmit descriptor ring\n");
1594 memset(txdr
->buffer_info
, 0, size
);
1596 /* round up to nearest 4K */
1598 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1599 txdr
->size
= ALIGN(txdr
->size
, 4096);
1601 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1604 vfree(txdr
->buffer_info
);
1606 "Unable to allocate memory for the transmit descriptor ring\n");
1610 /* Fix for errata 23, can't cross 64kB boundary */
1611 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1612 void *olddesc
= txdr
->desc
;
1613 dma_addr_t olddma
= txdr
->dma
;
1614 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1615 "at %p\n", txdr
->size
, txdr
->desc
);
1616 /* Try again, without freeing the previous */
1617 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1618 /* Failed allocation, critical failure */
1620 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1621 goto setup_tx_desc_die
;
1624 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1626 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1628 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1630 "Unable to allocate aligned memory "
1631 "for the transmit descriptor ring\n");
1632 vfree(txdr
->buffer_info
);
1635 /* Free old allocation, new allocation was successful */
1636 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1639 memset(txdr
->desc
, 0, txdr
->size
);
1641 txdr
->next_to_use
= 0;
1642 txdr
->next_to_clean
= 0;
1648 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1649 * (Descriptors) for all queues
1650 * @adapter: board private structure
1652 * Return 0 on success, negative on failure
1655 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1659 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1660 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1663 "Allocation for Tx Queue %u failed\n", i
);
1664 for (i
-- ; i
>= 0; i
--)
1665 e1000_free_tx_resources(adapter
,
1666 &adapter
->tx_ring
[i
]);
1675 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1676 * @adapter: board private structure
1678 * Configure the Tx unit of the MAC after a reset.
1681 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1684 struct e1000_hw
*hw
= &adapter
->hw
;
1685 u32 tdlen
, tctl
, tipg
, tarc
;
1688 /* Setup the HW Tx Head and Tail descriptor pointers */
1690 switch (adapter
->num_tx_queues
) {
1693 tdba
= adapter
->tx_ring
[0].dma
;
1694 tdlen
= adapter
->tx_ring
[0].count
*
1695 sizeof(struct e1000_tx_desc
);
1697 ew32(TDBAH
, (tdba
>> 32));
1698 ew32(TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1701 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1702 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1706 /* Set the default values for the Tx Inter Packet Gap timer */
1707 if (hw
->mac_type
<= e1000_82547_rev_2
&&
1708 (hw
->media_type
== e1000_media_type_fiber
||
1709 hw
->media_type
== e1000_media_type_internal_serdes
))
1710 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1712 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1714 switch (hw
->mac_type
) {
1715 case e1000_82542_rev2_0
:
1716 case e1000_82542_rev2_1
:
1717 tipg
= DEFAULT_82542_TIPG_IPGT
;
1718 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1719 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1721 case e1000_80003es2lan
:
1722 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1723 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1726 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1727 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1730 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1731 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1734 /* Set the Tx Interrupt Delay register */
1736 ew32(TIDV
, adapter
->tx_int_delay
);
1737 if (hw
->mac_type
>= e1000_82540
)
1738 ew32(TADV
, adapter
->tx_abs_int_delay
);
1740 /* Program the Transmit Control Register */
1743 tctl
&= ~E1000_TCTL_CT
;
1744 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1745 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1747 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1749 /* set the speed mode bit, we'll clear it if we're not at
1750 * gigabit link later */
1753 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1762 e1000_config_collision_dist(hw
);
1764 /* Setup Transmit Descriptor Settings for eop descriptor */
1765 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1767 /* only set IDE if we are delaying interrupts using the timers */
1768 if (adapter
->tx_int_delay
)
1769 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1771 if (hw
->mac_type
< e1000_82543
)
1772 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1774 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1776 /* Cache if we're 82544 running in PCI-X because we'll
1777 * need this to apply a workaround later in the send path. */
1778 if (hw
->mac_type
== e1000_82544
&&
1779 hw
->bus_type
== e1000_bus_type_pcix
)
1780 adapter
->pcix_82544
= 1;
1787 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1788 * @adapter: board private structure
1789 * @rxdr: rx descriptor ring (for a specific queue) to setup
1791 * Returns 0 on success, negative on failure
1794 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1795 struct e1000_rx_ring
*rxdr
)
1797 struct e1000_hw
*hw
= &adapter
->hw
;
1798 struct pci_dev
*pdev
= adapter
->pdev
;
1801 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1802 rxdr
->buffer_info
= vmalloc(size
);
1803 if (!rxdr
->buffer_info
) {
1805 "Unable to allocate memory for the receive descriptor ring\n");
1808 memset(rxdr
->buffer_info
, 0, size
);
1810 if (hw
->mac_type
<= e1000_82547_rev_2
)
1811 desc_len
= sizeof(struct e1000_rx_desc
);
1813 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1815 /* Round up to nearest 4K */
1817 rxdr
->size
= rxdr
->count
* desc_len
;
1818 rxdr
->size
= ALIGN(rxdr
->size
, 4096);
1820 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1824 "Unable to allocate memory for the receive descriptor ring\n");
1826 vfree(rxdr
->buffer_info
);
1830 /* Fix for errata 23, can't cross 64kB boundary */
1831 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1832 void *olddesc
= rxdr
->desc
;
1833 dma_addr_t olddma
= rxdr
->dma
;
1834 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1835 "at %p\n", rxdr
->size
, rxdr
->desc
);
1836 /* Try again, without freeing the previous */
1837 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1838 /* Failed allocation, critical failure */
1840 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1842 "Unable to allocate memory "
1843 "for the receive descriptor ring\n");
1844 goto setup_rx_desc_die
;
1847 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1849 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1851 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1853 "Unable to allocate aligned memory "
1854 "for the receive descriptor ring\n");
1855 goto setup_rx_desc_die
;
1857 /* Free old allocation, new allocation was successful */
1858 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1861 memset(rxdr
->desc
, 0, rxdr
->size
);
1863 rxdr
->next_to_clean
= 0;
1864 rxdr
->next_to_use
= 0;
1870 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1871 * (Descriptors) for all queues
1872 * @adapter: board private structure
1874 * Return 0 on success, negative on failure
1877 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1881 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1882 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1885 "Allocation for Rx Queue %u failed\n", i
);
1886 for (i
-- ; i
>= 0; i
--)
1887 e1000_free_rx_resources(adapter
,
1888 &adapter
->rx_ring
[i
]);
1897 * e1000_setup_rctl - configure the receive control registers
1898 * @adapter: Board private structure
1900 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1902 struct e1000_hw
*hw
= &adapter
->hw
;
1907 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1909 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1910 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1911 (hw
->mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1913 if (hw
->tbi_compatibility_on
== 1)
1914 rctl
|= E1000_RCTL_SBP
;
1916 rctl
&= ~E1000_RCTL_SBP
;
1918 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1919 rctl
&= ~E1000_RCTL_LPE
;
1921 rctl
|= E1000_RCTL_LPE
;
1923 /* Setup buffer sizes */
1924 rctl
&= ~E1000_RCTL_SZ_4096
;
1925 rctl
|= E1000_RCTL_BSEX
;
1926 switch (adapter
->rx_buffer_len
) {
1927 case E1000_RXBUFFER_256
:
1928 rctl
|= E1000_RCTL_SZ_256
;
1929 rctl
&= ~E1000_RCTL_BSEX
;
1931 case E1000_RXBUFFER_512
:
1932 rctl
|= E1000_RCTL_SZ_512
;
1933 rctl
&= ~E1000_RCTL_BSEX
;
1935 case E1000_RXBUFFER_1024
:
1936 rctl
|= E1000_RCTL_SZ_1024
;
1937 rctl
&= ~E1000_RCTL_BSEX
;
1939 case E1000_RXBUFFER_2048
:
1941 rctl
|= E1000_RCTL_SZ_2048
;
1942 rctl
&= ~E1000_RCTL_BSEX
;
1944 case E1000_RXBUFFER_4096
:
1945 rctl
|= E1000_RCTL_SZ_4096
;
1947 case E1000_RXBUFFER_8192
:
1948 rctl
|= E1000_RCTL_SZ_8192
;
1950 case E1000_RXBUFFER_16384
:
1951 rctl
|= E1000_RCTL_SZ_16384
;
1959 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1960 * @adapter: board private structure
1962 * Configure the Rx unit of the MAC after a reset.
1965 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
1968 struct e1000_hw
*hw
= &adapter
->hw
;
1969 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
1971 rdlen
= adapter
->rx_ring
[0].count
*
1972 sizeof(struct e1000_rx_desc
);
1973 adapter
->clean_rx
= e1000_clean_rx_irq
;
1974 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1976 /* disable receives while setting up the descriptors */
1978 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1980 /* set the Receive Delay Timer Register */
1981 ew32(RDTR
, adapter
->rx_int_delay
);
1983 if (hw
->mac_type
>= e1000_82540
) {
1984 ew32(RADV
, adapter
->rx_abs_int_delay
);
1985 if (adapter
->itr_setting
!= 0)
1986 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
1989 if (hw
->mac_type
>= e1000_82571
) {
1990 ctrl_ext
= er32(CTRL_EXT
);
1991 /* Reset delay timers after every interrupt */
1992 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1993 /* Auto-Mask interrupts upon ICR access */
1994 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1995 ew32(IAM
, 0xffffffff);
1996 ew32(CTRL_EXT
, ctrl_ext
);
1997 E1000_WRITE_FLUSH();
2000 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2001 * the Base and Length of the Rx Descriptor Ring */
2002 switch (adapter
->num_rx_queues
) {
2005 rdba
= adapter
->rx_ring
[0].dma
;
2007 ew32(RDBAH
, (rdba
>> 32));
2008 ew32(RDBAL
, (rdba
& 0x00000000ffffffffULL
));
2011 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
2012 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
2016 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2017 if (hw
->mac_type
>= e1000_82543
) {
2018 rxcsum
= er32(RXCSUM
);
2019 if (adapter
->rx_csum
)
2020 rxcsum
|= E1000_RXCSUM_TUOFL
;
2022 /* don't need to clear IPPCSE as it defaults to 0 */
2023 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2024 ew32(RXCSUM
, rxcsum
);
2027 /* Enable Receives */
2032 * e1000_free_tx_resources - Free Tx Resources per Queue
2033 * @adapter: board private structure
2034 * @tx_ring: Tx descriptor ring for a specific queue
2036 * Free all transmit software resources
2039 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2040 struct e1000_tx_ring
*tx_ring
)
2042 struct pci_dev
*pdev
= adapter
->pdev
;
2044 e1000_clean_tx_ring(adapter
, tx_ring
);
2046 vfree(tx_ring
->buffer_info
);
2047 tx_ring
->buffer_info
= NULL
;
2049 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2051 tx_ring
->desc
= NULL
;
2055 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2056 * @adapter: board private structure
2058 * Free all transmit software resources
2061 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2065 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2066 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2069 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2070 struct e1000_buffer
*buffer_info
)
2072 buffer_info
->dma
= 0;
2073 if (buffer_info
->skb
) {
2074 skb_dma_unmap(&adapter
->pdev
->dev
, buffer_info
->skb
,
2076 dev_kfree_skb_any(buffer_info
->skb
);
2077 buffer_info
->skb
= NULL
;
2079 buffer_info
->time_stamp
= 0;
2080 /* buffer_info must be completely set up in the transmit path */
2084 * e1000_clean_tx_ring - Free Tx Buffers
2085 * @adapter: board private structure
2086 * @tx_ring: ring to be cleaned
2089 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2090 struct e1000_tx_ring
*tx_ring
)
2092 struct e1000_hw
*hw
= &adapter
->hw
;
2093 struct e1000_buffer
*buffer_info
;
2097 /* Free all the Tx ring sk_buffs */
2099 for (i
= 0; i
< tx_ring
->count
; i
++) {
2100 buffer_info
= &tx_ring
->buffer_info
[i
];
2101 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2104 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2105 memset(tx_ring
->buffer_info
, 0, size
);
2107 /* Zero out the descriptor ring */
2109 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2111 tx_ring
->next_to_use
= 0;
2112 tx_ring
->next_to_clean
= 0;
2113 tx_ring
->last_tx_tso
= 0;
2115 writel(0, hw
->hw_addr
+ tx_ring
->tdh
);
2116 writel(0, hw
->hw_addr
+ tx_ring
->tdt
);
2120 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2121 * @adapter: board private structure
2124 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2128 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2129 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2133 * e1000_free_rx_resources - Free Rx Resources
2134 * @adapter: board private structure
2135 * @rx_ring: ring to clean the resources from
2137 * Free all receive software resources
2140 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2141 struct e1000_rx_ring
*rx_ring
)
2143 struct pci_dev
*pdev
= adapter
->pdev
;
2145 e1000_clean_rx_ring(adapter
, rx_ring
);
2147 vfree(rx_ring
->buffer_info
);
2148 rx_ring
->buffer_info
= NULL
;
2150 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2152 rx_ring
->desc
= NULL
;
2156 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2157 * @adapter: board private structure
2159 * Free all receive software resources
2162 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2166 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2167 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2171 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2172 * @adapter: board private structure
2173 * @rx_ring: ring to free buffers from
2176 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2177 struct e1000_rx_ring
*rx_ring
)
2179 struct e1000_hw
*hw
= &adapter
->hw
;
2180 struct e1000_buffer
*buffer_info
;
2181 struct pci_dev
*pdev
= adapter
->pdev
;
2185 /* Free all the Rx ring sk_buffs */
2186 for (i
= 0; i
< rx_ring
->count
; i
++) {
2187 buffer_info
= &rx_ring
->buffer_info
[i
];
2188 if (buffer_info
->dma
) {
2189 pci_unmap_single(pdev
,
2191 buffer_info
->length
,
2192 PCI_DMA_FROMDEVICE
);
2195 buffer_info
->dma
= 0;
2197 if (buffer_info
->skb
) {
2198 dev_kfree_skb(buffer_info
->skb
);
2199 buffer_info
->skb
= NULL
;
2203 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2204 memset(rx_ring
->buffer_info
, 0, size
);
2206 /* Zero out the descriptor ring */
2208 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2210 rx_ring
->next_to_clean
= 0;
2211 rx_ring
->next_to_use
= 0;
2213 writel(0, hw
->hw_addr
+ rx_ring
->rdh
);
2214 writel(0, hw
->hw_addr
+ rx_ring
->rdt
);
2218 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2219 * @adapter: board private structure
2222 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2226 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2227 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2230 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2231 * and memory write and invalidate disabled for certain operations
2233 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2235 struct e1000_hw
*hw
= &adapter
->hw
;
2236 struct net_device
*netdev
= adapter
->netdev
;
2239 e1000_pci_clear_mwi(hw
);
2242 rctl
|= E1000_RCTL_RST
;
2244 E1000_WRITE_FLUSH();
2247 if (netif_running(netdev
))
2248 e1000_clean_all_rx_rings(adapter
);
2251 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2253 struct e1000_hw
*hw
= &adapter
->hw
;
2254 struct net_device
*netdev
= adapter
->netdev
;
2258 rctl
&= ~E1000_RCTL_RST
;
2260 E1000_WRITE_FLUSH();
2263 if (hw
->pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2264 e1000_pci_set_mwi(hw
);
2266 if (netif_running(netdev
)) {
2267 /* No need to loop, because 82542 supports only 1 queue */
2268 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2269 e1000_configure_rx(adapter
);
2270 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2275 * e1000_set_mac - Change the Ethernet Address of the NIC
2276 * @netdev: network interface device structure
2277 * @p: pointer to an address structure
2279 * Returns 0 on success, negative on failure
2282 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2284 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2285 struct e1000_hw
*hw
= &adapter
->hw
;
2286 struct sockaddr
*addr
= p
;
2288 if (!is_valid_ether_addr(addr
->sa_data
))
2289 return -EADDRNOTAVAIL
;
2291 /* 82542 2.0 needs to be in reset to write receive address registers */
2293 if (hw
->mac_type
== e1000_82542_rev2_0
)
2294 e1000_enter_82542_rst(adapter
);
2296 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2297 memcpy(hw
->mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2299 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2301 /* With 82571 controllers, LAA may be overwritten (with the default)
2302 * due to controller reset from the other port. */
2303 if (hw
->mac_type
== e1000_82571
) {
2304 /* activate the work around */
2305 hw
->laa_is_present
= 1;
2307 /* Hold a copy of the LAA in RAR[14] This is done so that
2308 * between the time RAR[0] gets clobbered and the time it
2309 * gets fixed (in e1000_watchdog), the actual LAA is in one
2310 * of the RARs and no incoming packets directed to this port
2311 * are dropped. Eventaully the LAA will be in RAR[0] and
2313 e1000_rar_set(hw
, hw
->mac_addr
,
2314 E1000_RAR_ENTRIES
- 1);
2317 if (hw
->mac_type
== e1000_82542_rev2_0
)
2318 e1000_leave_82542_rst(adapter
);
2324 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2325 * @netdev: network interface device structure
2327 * The set_rx_mode entry point is called whenever the unicast or multicast
2328 * address lists or the network interface flags are updated. This routine is
2329 * responsible for configuring the hardware for proper unicast, multicast,
2330 * promiscuous mode, and all-multi behavior.
2333 static void e1000_set_rx_mode(struct net_device
*netdev
)
2335 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2336 struct e1000_hw
*hw
= &adapter
->hw
;
2337 struct netdev_hw_addr
*ha
;
2338 bool use_uc
= false;
2339 struct dev_addr_list
*mc_ptr
;
2342 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2343 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2344 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2345 E1000_NUM_MTA_REGISTERS
;
2346 u32
*mcarray
= kcalloc(mta_reg_count
, sizeof(u32
), GFP_ATOMIC
);
2349 DPRINTK(PROBE
, ERR
, "memory allocation failed\n");
2353 if (hw
->mac_type
== e1000_ich8lan
)
2354 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2356 /* reserve RAR[14] for LAA over-write work-around */
2357 if (hw
->mac_type
== e1000_82571
)
2360 /* Check for Promiscuous and All Multicast modes */
2364 if (netdev
->flags
& IFF_PROMISC
) {
2365 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2366 rctl
&= ~E1000_RCTL_VFE
;
2368 if (netdev
->flags
& IFF_ALLMULTI
) {
2369 rctl
|= E1000_RCTL_MPE
;
2371 rctl
&= ~E1000_RCTL_MPE
;
2373 if (adapter
->hw
.mac_type
!= e1000_ich8lan
)
2374 rctl
|= E1000_RCTL_VFE
;
2377 if (netdev
->uc
.count
> rar_entries
- 1) {
2378 rctl
|= E1000_RCTL_UPE
;
2379 } else if (!(netdev
->flags
& IFF_PROMISC
)) {
2380 rctl
&= ~E1000_RCTL_UPE
;
2386 /* 82542 2.0 needs to be in reset to write receive address registers */
2388 if (hw
->mac_type
== e1000_82542_rev2_0
)
2389 e1000_enter_82542_rst(adapter
);
2391 /* load the first 14 addresses into the exact filters 1-14. Unicast
2392 * addresses take precedence to avoid disabling unicast filtering
2395 * RAR 0 is used for the station MAC adddress
2396 * if there are not 14 addresses, go ahead and clear the filters
2397 * -- with 82571 controllers only 0-13 entries are filled here
2401 list_for_each_entry(ha
, &netdev
->uc
.list
, list
) {
2402 if (i
== rar_entries
)
2404 e1000_rar_set(hw
, ha
->addr
, i
++);
2407 WARN_ON(i
== rar_entries
);
2409 mc_ptr
= netdev
->mc_list
;
2411 for (; i
< rar_entries
; i
++) {
2413 e1000_rar_set(hw
, mc_ptr
->da_addr
, i
);
2414 mc_ptr
= mc_ptr
->next
;
2416 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2417 E1000_WRITE_FLUSH();
2418 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2419 E1000_WRITE_FLUSH();
2423 /* load any remaining addresses into the hash table */
2425 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2426 u32 hash_reg
, hash_bit
, mta
;
2427 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->da_addr
);
2428 hash_reg
= (hash_value
>> 5) & 0x7F;
2429 hash_bit
= hash_value
& 0x1F;
2430 mta
= (1 << hash_bit
);
2431 mcarray
[hash_reg
] |= mta
;
2434 /* write the hash table completely, write from bottom to avoid
2435 * both stupid write combining chipsets, and flushing each write */
2436 for (i
= mta_reg_count
- 1; i
>= 0 ; i
--) {
2438 * If we are on an 82544 has an errata where writing odd
2439 * offsets overwrites the previous even offset, but writing
2440 * backwards over the range solves the issue by always
2441 * writing the odd offset first
2443 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, mcarray
[i
]);
2445 E1000_WRITE_FLUSH();
2447 if (hw
->mac_type
== e1000_82542_rev2_0
)
2448 e1000_leave_82542_rst(adapter
);
2453 /* Need to wait a few seconds after link up to get diagnostic information from
2456 static void e1000_update_phy_info(unsigned long data
)
2458 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2459 struct e1000_hw
*hw
= &adapter
->hw
;
2460 e1000_phy_get_info(hw
, &adapter
->phy_info
);
2464 * e1000_82547_tx_fifo_stall - Timer Call-back
2465 * @data: pointer to adapter cast into an unsigned long
2468 static void e1000_82547_tx_fifo_stall(unsigned long data
)
2470 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2471 struct e1000_hw
*hw
= &adapter
->hw
;
2472 struct net_device
*netdev
= adapter
->netdev
;
2475 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2476 if ((er32(TDT
) == er32(TDH
)) &&
2477 (er32(TDFT
) == er32(TDFH
)) &&
2478 (er32(TDFTS
) == er32(TDFHS
))) {
2480 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
2481 ew32(TDFT
, adapter
->tx_head_addr
);
2482 ew32(TDFH
, adapter
->tx_head_addr
);
2483 ew32(TDFTS
, adapter
->tx_head_addr
);
2484 ew32(TDFHS
, adapter
->tx_head_addr
);
2486 E1000_WRITE_FLUSH();
2488 adapter
->tx_fifo_head
= 0;
2489 atomic_set(&adapter
->tx_fifo_stall
, 0);
2490 netif_wake_queue(netdev
);
2492 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2498 * e1000_watchdog - Timer Call-back
2499 * @data: pointer to adapter cast into an unsigned long
2501 static void e1000_watchdog(unsigned long data
)
2503 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2504 struct e1000_hw
*hw
= &adapter
->hw
;
2505 struct net_device
*netdev
= adapter
->netdev
;
2506 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2510 ret_val
= e1000_check_for_link(hw
);
2511 if ((ret_val
== E1000_ERR_PHY
) &&
2512 (hw
->phy_type
== e1000_phy_igp_3
) &&
2513 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2514 /* See e1000_kumeran_lock_loss_workaround() */
2516 "Gigabit has been disabled, downgrading speed\n");
2519 if (hw
->mac_type
== e1000_82573
) {
2520 e1000_enable_tx_pkt_filtering(hw
);
2521 if (adapter
->mng_vlan_id
!= hw
->mng_cookie
.vlan_id
)
2522 e1000_update_mng_vlan(adapter
);
2525 if ((hw
->media_type
== e1000_media_type_internal_serdes
) &&
2526 !(er32(TXCW
) & E1000_TXCW_ANE
))
2527 link
= !hw
->serdes_link_down
;
2529 link
= er32(STATUS
) & E1000_STATUS_LU
;
2532 if (!netif_carrier_ok(netdev
)) {
2535 e1000_get_speed_and_duplex(hw
,
2536 &adapter
->link_speed
,
2537 &adapter
->link_duplex
);
2540 printk(KERN_INFO
"e1000: %s NIC Link is Up %d Mbps %s, "
2541 "Flow Control: %s\n",
2543 adapter
->link_speed
,
2544 adapter
->link_duplex
== FULL_DUPLEX
?
2545 "Full Duplex" : "Half Duplex",
2546 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2547 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2548 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2549 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2551 /* tweak tx_queue_len according to speed/duplex
2552 * and adjust the timeout factor */
2553 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2554 adapter
->tx_timeout_factor
= 1;
2555 switch (adapter
->link_speed
) {
2558 netdev
->tx_queue_len
= 10;
2559 adapter
->tx_timeout_factor
= 8;
2563 netdev
->tx_queue_len
= 100;
2564 /* maybe add some timeout factor ? */
2568 if ((hw
->mac_type
== e1000_82571
||
2569 hw
->mac_type
== e1000_82572
) &&
2572 tarc0
= er32(TARC0
);
2573 tarc0
&= ~(1 << 21);
2577 /* disable TSO for pcie and 10/100 speeds, to avoid
2578 * some hardware issues */
2579 if (!adapter
->tso_force
&&
2580 hw
->bus_type
== e1000_bus_type_pci_express
){
2581 switch (adapter
->link_speed
) {
2585 "10/100 speed: disabling TSO\n");
2586 netdev
->features
&= ~NETIF_F_TSO
;
2587 netdev
->features
&= ~NETIF_F_TSO6
;
2590 netdev
->features
|= NETIF_F_TSO
;
2591 netdev
->features
|= NETIF_F_TSO6
;
2599 /* enable transmits in the hardware, need to do this
2600 * after setting TARC0 */
2602 tctl
|= E1000_TCTL_EN
;
2605 netif_carrier_on(netdev
);
2606 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2607 adapter
->smartspeed
= 0;
2609 /* make sure the receive unit is started */
2610 if (hw
->rx_needs_kicking
) {
2611 u32 rctl
= er32(RCTL
);
2612 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
2616 if (netif_carrier_ok(netdev
)) {
2617 adapter
->link_speed
= 0;
2618 adapter
->link_duplex
= 0;
2619 printk(KERN_INFO
"e1000: %s NIC Link is Down\n",
2621 netif_carrier_off(netdev
);
2622 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2624 /* 80003ES2LAN workaround--
2625 * For packet buffer work-around on link down event;
2626 * disable receives in the ISR and
2627 * reset device here in the watchdog
2629 if (hw
->mac_type
== e1000_80003es2lan
)
2631 schedule_work(&adapter
->reset_task
);
2634 e1000_smartspeed(adapter
);
2637 e1000_update_stats(adapter
);
2639 hw
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2640 adapter
->tpt_old
= adapter
->stats
.tpt
;
2641 hw
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2642 adapter
->colc_old
= adapter
->stats
.colc
;
2644 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2645 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2646 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2647 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2649 e1000_update_adaptive(hw
);
2651 if (!netif_carrier_ok(netdev
)) {
2652 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2653 /* We've lost link, so the controller stops DMA,
2654 * but we've got queued Tx work that's never going
2655 * to get done, so reset controller to flush Tx.
2656 * (Do the reset outside of interrupt context). */
2657 adapter
->tx_timeout_count
++;
2658 schedule_work(&adapter
->reset_task
);
2659 /* return immediately since reset is imminent */
2664 /* Cause software interrupt to ensure rx ring is cleaned */
2665 ew32(ICS
, E1000_ICS_RXDMT0
);
2667 /* Force detection of hung controller every watchdog period */
2668 adapter
->detect_tx_hung
= true;
2670 /* With 82571 controllers, LAA may be overwritten due to controller
2671 * reset from the other port. Set the appropriate LAA in RAR[0] */
2672 if (hw
->mac_type
== e1000_82571
&& hw
->laa_is_present
)
2673 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2675 /* Reset the timer */
2676 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2679 enum latency_range
{
2683 latency_invalid
= 255
2687 * e1000_update_itr - update the dynamic ITR value based on statistics
2688 * Stores a new ITR value based on packets and byte
2689 * counts during the last interrupt. The advantage of per interrupt
2690 * computation is faster updates and more accurate ITR for the current
2691 * traffic pattern. Constants in this function were computed
2692 * based on theoretical maximum wire speed and thresholds were set based
2693 * on testing data as well as attempting to minimize response time
2694 * while increasing bulk throughput.
2695 * this functionality is controlled by the InterruptThrottleRate module
2696 * parameter (see e1000_param.c)
2697 * @adapter: pointer to adapter
2698 * @itr_setting: current adapter->itr
2699 * @packets: the number of packets during this measurement interval
2700 * @bytes: the number of bytes during this measurement interval
2702 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2703 u16 itr_setting
, int packets
, int bytes
)
2705 unsigned int retval
= itr_setting
;
2706 struct e1000_hw
*hw
= &adapter
->hw
;
2708 if (unlikely(hw
->mac_type
< e1000_82540
))
2709 goto update_itr_done
;
2712 goto update_itr_done
;
2714 switch (itr_setting
) {
2715 case lowest_latency
:
2716 /* jumbo frames get bulk treatment*/
2717 if (bytes
/packets
> 8000)
2718 retval
= bulk_latency
;
2719 else if ((packets
< 5) && (bytes
> 512))
2720 retval
= low_latency
;
2722 case low_latency
: /* 50 usec aka 20000 ints/s */
2723 if (bytes
> 10000) {
2724 /* jumbo frames need bulk latency setting */
2725 if (bytes
/packets
> 8000)
2726 retval
= bulk_latency
;
2727 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2728 retval
= bulk_latency
;
2729 else if ((packets
> 35))
2730 retval
= lowest_latency
;
2731 } else if (bytes
/packets
> 2000)
2732 retval
= bulk_latency
;
2733 else if (packets
<= 2 && bytes
< 512)
2734 retval
= lowest_latency
;
2736 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2737 if (bytes
> 25000) {
2739 retval
= low_latency
;
2740 } else if (bytes
< 6000) {
2741 retval
= low_latency
;
2750 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2752 struct e1000_hw
*hw
= &adapter
->hw
;
2754 u32 new_itr
= adapter
->itr
;
2756 if (unlikely(hw
->mac_type
< e1000_82540
))
2759 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2760 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2766 adapter
->tx_itr
= e1000_update_itr(adapter
,
2768 adapter
->total_tx_packets
,
2769 adapter
->total_tx_bytes
);
2770 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2771 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2772 adapter
->tx_itr
= low_latency
;
2774 adapter
->rx_itr
= e1000_update_itr(adapter
,
2776 adapter
->total_rx_packets
,
2777 adapter
->total_rx_bytes
);
2778 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2779 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2780 adapter
->rx_itr
= low_latency
;
2782 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2784 switch (current_itr
) {
2785 /* counts and packets in update_itr are dependent on these numbers */
2786 case lowest_latency
:
2790 new_itr
= 20000; /* aka hwitr = ~200 */
2800 if (new_itr
!= adapter
->itr
) {
2801 /* this attempts to bias the interrupt rate towards Bulk
2802 * by adding intermediate steps when interrupt rate is
2804 new_itr
= new_itr
> adapter
->itr
?
2805 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2807 adapter
->itr
= new_itr
;
2808 ew32(ITR
, 1000000000 / (new_itr
* 256));
2814 #define E1000_TX_FLAGS_CSUM 0x00000001
2815 #define E1000_TX_FLAGS_VLAN 0x00000002
2816 #define E1000_TX_FLAGS_TSO 0x00000004
2817 #define E1000_TX_FLAGS_IPV4 0x00000008
2818 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2819 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2821 static int e1000_tso(struct e1000_adapter
*adapter
,
2822 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2824 struct e1000_context_desc
*context_desc
;
2825 struct e1000_buffer
*buffer_info
;
2828 u16 ipcse
= 0, tucse
, mss
;
2829 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2832 if (skb_is_gso(skb
)) {
2833 if (skb_header_cloned(skb
)) {
2834 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2839 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2840 mss
= skb_shinfo(skb
)->gso_size
;
2841 if (skb
->protocol
== htons(ETH_P_IP
)) {
2842 struct iphdr
*iph
= ip_hdr(skb
);
2845 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2849 cmd_length
= E1000_TXD_CMD_IP
;
2850 ipcse
= skb_transport_offset(skb
) - 1;
2851 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2852 ipv6_hdr(skb
)->payload_len
= 0;
2853 tcp_hdr(skb
)->check
=
2854 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2855 &ipv6_hdr(skb
)->daddr
,
2859 ipcss
= skb_network_offset(skb
);
2860 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
2861 tucss
= skb_transport_offset(skb
);
2862 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
2865 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2866 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2868 i
= tx_ring
->next_to_use
;
2869 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2870 buffer_info
= &tx_ring
->buffer_info
[i
];
2872 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2873 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2874 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2875 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2876 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2877 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2878 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2879 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2880 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2882 buffer_info
->time_stamp
= jiffies
;
2883 buffer_info
->next_to_watch
= i
;
2885 if (++i
== tx_ring
->count
) i
= 0;
2886 tx_ring
->next_to_use
= i
;
2893 static bool e1000_tx_csum(struct e1000_adapter
*adapter
,
2894 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2896 struct e1000_context_desc
*context_desc
;
2897 struct e1000_buffer
*buffer_info
;
2900 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
2902 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2905 switch (skb
->protocol
) {
2906 case cpu_to_be16(ETH_P_IP
):
2907 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2908 cmd_len
|= E1000_TXD_CMD_TCP
;
2910 case cpu_to_be16(ETH_P_IPV6
):
2911 /* XXX not handling all IPV6 headers */
2912 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2913 cmd_len
|= E1000_TXD_CMD_TCP
;
2916 if (unlikely(net_ratelimit()))
2917 DPRINTK(DRV
, WARNING
,
2918 "checksum_partial proto=%x!\n", skb
->protocol
);
2922 css
= skb_transport_offset(skb
);
2924 i
= tx_ring
->next_to_use
;
2925 buffer_info
= &tx_ring
->buffer_info
[i
];
2926 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2928 context_desc
->lower_setup
.ip_config
= 0;
2929 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2930 context_desc
->upper_setup
.tcp_fields
.tucso
=
2931 css
+ skb
->csum_offset
;
2932 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2933 context_desc
->tcp_seg_setup
.data
= 0;
2934 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
2936 buffer_info
->time_stamp
= jiffies
;
2937 buffer_info
->next_to_watch
= i
;
2939 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2940 tx_ring
->next_to_use
= i
;
2945 #define E1000_MAX_TXD_PWR 12
2946 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2948 static int e1000_tx_map(struct e1000_adapter
*adapter
,
2949 struct e1000_tx_ring
*tx_ring
,
2950 struct sk_buff
*skb
, unsigned int first
,
2951 unsigned int max_per_txd
, unsigned int nr_frags
,
2954 struct e1000_hw
*hw
= &adapter
->hw
;
2955 struct e1000_buffer
*buffer_info
;
2956 unsigned int len
= skb_headlen(skb
);
2957 unsigned int offset
, size
, count
= 0, i
;
2961 i
= tx_ring
->next_to_use
;
2963 if (skb_dma_map(&adapter
->pdev
->dev
, skb
, DMA_TO_DEVICE
)) {
2964 dev_err(&adapter
->pdev
->dev
, "TX DMA map failed\n");
2968 map
= skb_shinfo(skb
)->dma_maps
;
2972 buffer_info
= &tx_ring
->buffer_info
[i
];
2973 size
= min(len
, max_per_txd
);
2974 /* Workaround for Controller erratum --
2975 * descriptor for non-tso packet in a linear SKB that follows a
2976 * tso gets written back prematurely before the data is fully
2977 * DMA'd to the controller */
2978 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2980 tx_ring
->last_tx_tso
= 0;
2984 /* Workaround for premature desc write-backs
2985 * in TSO mode. Append 4-byte sentinel desc */
2986 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2988 /* work-around for errata 10 and it applies
2989 * to all controllers in PCI-X mode
2990 * The fix is to make sure that the first descriptor of a
2991 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2993 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
2994 (size
> 2015) && count
== 0))
2997 /* Workaround for potential 82544 hang in PCI-X. Avoid
2998 * terminating buffers within evenly-aligned dwords. */
2999 if (unlikely(adapter
->pcix_82544
&&
3000 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
3004 buffer_info
->length
= size
;
3005 buffer_info
->dma
= skb_shinfo(skb
)->dma_head
+ offset
;
3006 buffer_info
->time_stamp
= jiffies
;
3007 buffer_info
->next_to_watch
= i
;
3014 if (unlikely(i
== tx_ring
->count
))
3019 for (f
= 0; f
< nr_frags
; f
++) {
3020 struct skb_frag_struct
*frag
;
3022 frag
= &skb_shinfo(skb
)->frags
[f
];
3028 if (unlikely(i
== tx_ring
->count
))
3031 buffer_info
= &tx_ring
->buffer_info
[i
];
3032 size
= min(len
, max_per_txd
);
3033 /* Workaround for premature desc write-backs
3034 * in TSO mode. Append 4-byte sentinel desc */
3035 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
3037 /* Workaround for potential 82544 hang in PCI-X.
3038 * Avoid terminating buffers within evenly-aligned
3040 if (unlikely(adapter
->pcix_82544
&&
3041 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
3045 buffer_info
->length
= size
;
3046 buffer_info
->dma
= map
[f
] + offset
;
3047 buffer_info
->time_stamp
= jiffies
;
3048 buffer_info
->next_to_watch
= i
;
3056 tx_ring
->buffer_info
[i
].skb
= skb
;
3057 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3062 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3063 struct e1000_tx_ring
*tx_ring
, int tx_flags
,
3066 struct e1000_hw
*hw
= &adapter
->hw
;
3067 struct e1000_tx_desc
*tx_desc
= NULL
;
3068 struct e1000_buffer
*buffer_info
;
3069 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3072 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3073 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3075 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3077 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3078 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3081 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3082 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3083 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3086 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3087 txd_lower
|= E1000_TXD_CMD_VLE
;
3088 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3091 i
= tx_ring
->next_to_use
;
3094 buffer_info
= &tx_ring
->buffer_info
[i
];
3095 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3096 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3097 tx_desc
->lower
.data
=
3098 cpu_to_le32(txd_lower
| buffer_info
->length
);
3099 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3100 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3103 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3105 /* Force memory writes to complete before letting h/w
3106 * know there are new descriptors to fetch. (Only
3107 * applicable for weak-ordered memory model archs,
3108 * such as IA-64). */
3111 tx_ring
->next_to_use
= i
;
3112 writel(i
, hw
->hw_addr
+ tx_ring
->tdt
);
3113 /* we need this if more than one processor can write to our tail
3114 * at a time, it syncronizes IO on IA64/Altix systems */
3119 * 82547 workaround to avoid controller hang in half-duplex environment.
3120 * The workaround is to avoid queuing a large packet that would span
3121 * the internal Tx FIFO ring boundary by notifying the stack to resend
3122 * the packet at a later time. This gives the Tx FIFO an opportunity to
3123 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3124 * to the beginning of the Tx FIFO.
3127 #define E1000_FIFO_HDR 0x10
3128 #define E1000_82547_PAD_LEN 0x3E0
3130 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
3131 struct sk_buff
*skb
)
3133 u32 fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3134 u32 skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3136 skb_fifo_len
= ALIGN(skb_fifo_len
, E1000_FIFO_HDR
);
3138 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3139 goto no_fifo_stall_required
;
3141 if (atomic_read(&adapter
->tx_fifo_stall
))
3144 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3145 atomic_set(&adapter
->tx_fifo_stall
, 1);
3149 no_fifo_stall_required
:
3150 adapter
->tx_fifo_head
+= skb_fifo_len
;
3151 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3152 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3156 #define MINIMUM_DHCP_PACKET_SIZE 282
3157 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3158 struct sk_buff
*skb
)
3160 struct e1000_hw
*hw
= &adapter
->hw
;
3162 if (vlan_tx_tag_present(skb
)) {
3163 if (!((vlan_tx_tag_get(skb
) == hw
->mng_cookie
.vlan_id
) &&
3164 ( hw
->mng_cookie
.status
&
3165 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3168 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3169 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
3170 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3171 const struct iphdr
*ip
=
3172 (struct iphdr
*)((u8
*)skb
->data
+14);
3173 if (IPPROTO_UDP
== ip
->protocol
) {
3174 struct udphdr
*udp
=
3175 (struct udphdr
*)((u8
*)ip
+
3177 if (ntohs(udp
->dest
) == 67) {
3178 offset
= (u8
*)udp
+ 8 - skb
->data
;
3179 length
= skb
->len
- offset
;
3181 return e1000_mng_write_dhcp_info(hw
,
3191 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3193 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3194 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3196 netif_stop_queue(netdev
);
3197 /* Herbert's original patch had:
3198 * smp_mb__after_netif_stop_queue();
3199 * but since that doesn't exist yet, just open code it. */
3202 /* We need to check again in a case another CPU has just
3203 * made room available. */
3204 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3208 netif_start_queue(netdev
);
3209 ++adapter
->restart_queue
;
3213 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3214 struct e1000_tx_ring
*tx_ring
, int size
)
3216 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3218 return __e1000_maybe_stop_tx(netdev
, size
);
3221 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3222 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3224 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3225 struct e1000_hw
*hw
= &adapter
->hw
;
3226 struct e1000_tx_ring
*tx_ring
;
3227 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3228 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3229 unsigned int tx_flags
= 0;
3230 unsigned int len
= skb
->len
- skb
->data_len
;
3231 unsigned int nr_frags
;
3237 /* This goes back to the question of how to logically map a tx queue
3238 * to a flow. Right now, performance is impacted slightly negatively
3239 * if using multiple tx queues. If the stack breaks away from a
3240 * single qdisc implementation, we can look at this again. */
3241 tx_ring
= adapter
->tx_ring
;
3243 if (unlikely(skb
->len
<= 0)) {
3244 dev_kfree_skb_any(skb
);
3245 return NETDEV_TX_OK
;
3248 /* 82571 and newer doesn't need the workaround that limited descriptor
3250 if (hw
->mac_type
>= e1000_82571
)
3253 mss
= skb_shinfo(skb
)->gso_size
;
3254 /* The controller does a simple calculation to
3255 * make sure there is enough room in the FIFO before
3256 * initiating the DMA for each buffer. The calc is:
3257 * 4 = ceil(buffer len/mss). To make sure we don't
3258 * overrun the FIFO, adjust the max buffer len if mss
3262 max_per_txd
= min(mss
<< 2, max_per_txd
);
3263 max_txd_pwr
= fls(max_per_txd
) - 1;
3265 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3266 * points to just header, pull a few bytes of payload from
3267 * frags into skb->data */
3268 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3269 if (skb
->data_len
&& hdr_len
== len
) {
3270 switch (hw
->mac_type
) {
3271 unsigned int pull_size
;
3273 /* Make sure we have room to chop off 4 bytes,
3274 * and that the end alignment will work out to
3275 * this hardware's requirements
3276 * NOTE: this is a TSO only workaround
3277 * if end byte alignment not correct move us
3278 * into the next dword */
3279 if ((unsigned long)(skb_tail_pointer(skb
) - 1) & 4)
3286 pull_size
= min((unsigned int)4, skb
->data_len
);
3287 if (!__pskb_pull_tail(skb
, pull_size
)) {
3289 "__pskb_pull_tail failed.\n");
3290 dev_kfree_skb_any(skb
);
3291 return NETDEV_TX_OK
;
3293 len
= skb
->len
- skb
->data_len
;
3302 /* reserve a descriptor for the offload context */
3303 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3307 /* Controller Erratum workaround */
3308 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3311 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3313 if (adapter
->pcix_82544
)
3316 /* work-around for errata 10 and it applies to all controllers
3317 * in PCI-X mode, so add one more descriptor to the count
3319 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
3323 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3324 for (f
= 0; f
< nr_frags
; f
++)
3325 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3327 if (adapter
->pcix_82544
)
3331 if (hw
->tx_pkt_filtering
&&
3332 (hw
->mac_type
== e1000_82573
))
3333 e1000_transfer_dhcp_info(adapter
, skb
);
3335 /* need: count + 2 desc gap to keep tail from touching
3336 * head, otherwise try next time */
3337 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2)))
3338 return NETDEV_TX_BUSY
;
3340 if (unlikely(hw
->mac_type
== e1000_82547
)) {
3341 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3342 netif_stop_queue(netdev
);
3343 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3344 return NETDEV_TX_BUSY
;
3348 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3349 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3350 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3353 first
= tx_ring
->next_to_use
;
3355 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3357 dev_kfree_skb_any(skb
);
3358 return NETDEV_TX_OK
;
3362 tx_ring
->last_tx_tso
= 1;
3363 tx_flags
|= E1000_TX_FLAGS_TSO
;
3364 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3365 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3367 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3368 * 82571 hardware supports TSO capabilities for IPv6 as well...
3369 * no longer assume, we must. */
3370 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3371 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3373 count
= e1000_tx_map(adapter
, tx_ring
, skb
, first
, max_per_txd
,
3377 e1000_tx_queue(adapter
, tx_ring
, tx_flags
, count
);
3378 /* Make sure there is space in the ring for the next send. */
3379 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3382 dev_kfree_skb_any(skb
);
3383 tx_ring
->buffer_info
[first
].time_stamp
= 0;
3384 tx_ring
->next_to_use
= first
;
3387 return NETDEV_TX_OK
;
3391 * e1000_tx_timeout - Respond to a Tx Hang
3392 * @netdev: network interface device structure
3395 static void e1000_tx_timeout(struct net_device
*netdev
)
3397 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3399 /* Do the reset outside of interrupt context */
3400 adapter
->tx_timeout_count
++;
3401 schedule_work(&adapter
->reset_task
);
3404 static void e1000_reset_task(struct work_struct
*work
)
3406 struct e1000_adapter
*adapter
=
3407 container_of(work
, struct e1000_adapter
, reset_task
);
3409 e1000_reinit_locked(adapter
);
3413 * e1000_get_stats - Get System Network Statistics
3414 * @netdev: network interface device structure
3416 * Returns the address of the device statistics structure.
3417 * The statistics are actually updated from the timer callback.
3420 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3422 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3424 /* only return the current stats */
3425 return &adapter
->net_stats
;
3429 * e1000_change_mtu - Change the Maximum Transfer Unit
3430 * @netdev: network interface device structure
3431 * @new_mtu: new value for maximum frame size
3433 * Returns 0 on success, negative on failure
3436 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3438 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3439 struct e1000_hw
*hw
= &adapter
->hw
;
3440 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3441 u16 eeprom_data
= 0;
3443 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3444 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3445 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3449 /* Adapter-specific max frame size limits. */
3450 switch (hw
->mac_type
) {
3451 case e1000_undefined
... e1000_82542_rev2_1
:
3453 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3454 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3459 /* Jumbo Frames not supported if:
3460 * - this is not an 82573L device
3461 * - ASPM is enabled in any way (0x1A bits 3:2) */
3462 e1000_read_eeprom(hw
, EEPROM_INIT_3GIO_3
, 1,
3464 if ((hw
->device_id
!= E1000_DEV_ID_82573L
) ||
3465 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3466 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3468 "Jumbo Frames not supported.\n");
3473 /* ERT will be enabled later to enable wire speed receives */
3475 /* fall through to get support */
3478 case e1000_80003es2lan
:
3479 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3480 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3481 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3486 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3490 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3491 * means we reserve 2 more, this pushes us to allocate from the next
3493 * i.e. RXBUFFER_2048 --> size-4096 slab */
3495 if (max_frame
<= E1000_RXBUFFER_256
)
3496 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3497 else if (max_frame
<= E1000_RXBUFFER_512
)
3498 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3499 else if (max_frame
<= E1000_RXBUFFER_1024
)
3500 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3501 else if (max_frame
<= E1000_RXBUFFER_2048
)
3502 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3503 else if (max_frame
<= E1000_RXBUFFER_4096
)
3504 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3505 else if (max_frame
<= E1000_RXBUFFER_8192
)
3506 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3507 else if (max_frame
<= E1000_RXBUFFER_16384
)
3508 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3510 /* adjust allocation if LPE protects us, and we aren't using SBP */
3511 if (!hw
->tbi_compatibility_on
&&
3512 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3513 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3514 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3516 netdev
->mtu
= new_mtu
;
3517 hw
->max_frame_size
= max_frame
;
3519 if (netif_running(netdev
))
3520 e1000_reinit_locked(adapter
);
3526 * e1000_update_stats - Update the board statistics counters
3527 * @adapter: board private structure
3530 void e1000_update_stats(struct e1000_adapter
*adapter
)
3532 struct e1000_hw
*hw
= &adapter
->hw
;
3533 struct pci_dev
*pdev
= adapter
->pdev
;
3534 unsigned long flags
;
3537 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3540 * Prevent stats update while adapter is being reset, or if the pci
3541 * connection is down.
3543 if (adapter
->link_speed
== 0)
3545 if (pci_channel_offline(pdev
))
3548 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3550 /* these counters are modified from e1000_tbi_adjust_stats,
3551 * called from the interrupt context, so they must only
3552 * be written while holding adapter->stats_lock
3555 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3556 adapter
->stats
.gprc
+= er32(GPRC
);
3557 adapter
->stats
.gorcl
+= er32(GORCL
);
3558 adapter
->stats
.gorch
+= er32(GORCH
);
3559 adapter
->stats
.bprc
+= er32(BPRC
);
3560 adapter
->stats
.mprc
+= er32(MPRC
);
3561 adapter
->stats
.roc
+= er32(ROC
);
3563 if (hw
->mac_type
!= e1000_ich8lan
) {
3564 adapter
->stats
.prc64
+= er32(PRC64
);
3565 adapter
->stats
.prc127
+= er32(PRC127
);
3566 adapter
->stats
.prc255
+= er32(PRC255
);
3567 adapter
->stats
.prc511
+= er32(PRC511
);
3568 adapter
->stats
.prc1023
+= er32(PRC1023
);
3569 adapter
->stats
.prc1522
+= er32(PRC1522
);
3572 adapter
->stats
.symerrs
+= er32(SYMERRS
);
3573 adapter
->stats
.mpc
+= er32(MPC
);
3574 adapter
->stats
.scc
+= er32(SCC
);
3575 adapter
->stats
.ecol
+= er32(ECOL
);
3576 adapter
->stats
.mcc
+= er32(MCC
);
3577 adapter
->stats
.latecol
+= er32(LATECOL
);
3578 adapter
->stats
.dc
+= er32(DC
);
3579 adapter
->stats
.sec
+= er32(SEC
);
3580 adapter
->stats
.rlec
+= er32(RLEC
);
3581 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3582 adapter
->stats
.xontxc
+= er32(XONTXC
);
3583 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3584 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3585 adapter
->stats
.fcruc
+= er32(FCRUC
);
3586 adapter
->stats
.gptc
+= er32(GPTC
);
3587 adapter
->stats
.gotcl
+= er32(GOTCL
);
3588 adapter
->stats
.gotch
+= er32(GOTCH
);
3589 adapter
->stats
.rnbc
+= er32(RNBC
);
3590 adapter
->stats
.ruc
+= er32(RUC
);
3591 adapter
->stats
.rfc
+= er32(RFC
);
3592 adapter
->stats
.rjc
+= er32(RJC
);
3593 adapter
->stats
.torl
+= er32(TORL
);
3594 adapter
->stats
.torh
+= er32(TORH
);
3595 adapter
->stats
.totl
+= er32(TOTL
);
3596 adapter
->stats
.toth
+= er32(TOTH
);
3597 adapter
->stats
.tpr
+= er32(TPR
);
3599 if (hw
->mac_type
!= e1000_ich8lan
) {
3600 adapter
->stats
.ptc64
+= er32(PTC64
);
3601 adapter
->stats
.ptc127
+= er32(PTC127
);
3602 adapter
->stats
.ptc255
+= er32(PTC255
);
3603 adapter
->stats
.ptc511
+= er32(PTC511
);
3604 adapter
->stats
.ptc1023
+= er32(PTC1023
);
3605 adapter
->stats
.ptc1522
+= er32(PTC1522
);
3608 adapter
->stats
.mptc
+= er32(MPTC
);
3609 adapter
->stats
.bptc
+= er32(BPTC
);
3611 /* used for adaptive IFS */
3613 hw
->tx_packet_delta
= er32(TPT
);
3614 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3615 hw
->collision_delta
= er32(COLC
);
3616 adapter
->stats
.colc
+= hw
->collision_delta
;
3618 if (hw
->mac_type
>= e1000_82543
) {
3619 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3620 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3621 adapter
->stats
.tncrs
+= er32(TNCRS
);
3622 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3623 adapter
->stats
.tsctc
+= er32(TSCTC
);
3624 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3626 if (hw
->mac_type
> e1000_82547_rev_2
) {
3627 adapter
->stats
.iac
+= er32(IAC
);
3628 adapter
->stats
.icrxoc
+= er32(ICRXOC
);
3630 if (hw
->mac_type
!= e1000_ich8lan
) {
3631 adapter
->stats
.icrxptc
+= er32(ICRXPTC
);
3632 adapter
->stats
.icrxatc
+= er32(ICRXATC
);
3633 adapter
->stats
.ictxptc
+= er32(ICTXPTC
);
3634 adapter
->stats
.ictxatc
+= er32(ICTXATC
);
3635 adapter
->stats
.ictxqec
+= er32(ICTXQEC
);
3636 adapter
->stats
.ictxqmtc
+= er32(ICTXQMTC
);
3637 adapter
->stats
.icrxdmtc
+= er32(ICRXDMTC
);
3641 /* Fill out the OS statistics structure */
3642 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3643 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3647 /* RLEC on some newer hardware can be incorrect so build
3648 * our own version based on RUC and ROC */
3649 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3650 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3651 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3652 adapter
->stats
.cexterr
;
3653 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3654 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3655 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3656 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3657 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3660 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3661 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3662 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3663 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3664 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3665 if (hw
->bad_tx_carr_stats_fd
&&
3666 adapter
->link_duplex
== FULL_DUPLEX
) {
3667 adapter
->net_stats
.tx_carrier_errors
= 0;
3668 adapter
->stats
.tncrs
= 0;
3671 /* Tx Dropped needs to be maintained elsewhere */
3674 if (hw
->media_type
== e1000_media_type_copper
) {
3675 if ((adapter
->link_speed
== SPEED_1000
) &&
3676 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3677 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3678 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3681 if ((hw
->mac_type
<= e1000_82546
) &&
3682 (hw
->phy_type
== e1000_phy_m88
) &&
3683 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3684 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3687 /* Management Stats */
3688 if (hw
->has_smbus
) {
3689 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3690 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3691 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3694 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3698 * e1000_intr_msi - Interrupt Handler
3699 * @irq: interrupt number
3700 * @data: pointer to a network interface device structure
3703 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3705 struct net_device
*netdev
= data
;
3706 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3707 struct e1000_hw
*hw
= &adapter
->hw
;
3708 u32 icr
= er32(ICR
);
3710 /* in NAPI mode read ICR disables interrupts using IAM */
3712 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3713 hw
->get_link_status
= 1;
3714 /* 80003ES2LAN workaround-- For packet buffer work-around on
3715 * link down event; disable receives here in the ISR and reset
3716 * adapter in watchdog */
3717 if (netif_carrier_ok(netdev
) &&
3718 (hw
->mac_type
== e1000_80003es2lan
)) {
3719 /* disable receives */
3720 u32 rctl
= er32(RCTL
);
3721 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3723 /* guard against interrupt when we're going down */
3724 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3725 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3728 if (likely(napi_schedule_prep(&adapter
->napi
))) {
3729 adapter
->total_tx_bytes
= 0;
3730 adapter
->total_tx_packets
= 0;
3731 adapter
->total_rx_bytes
= 0;
3732 adapter
->total_rx_packets
= 0;
3733 __napi_schedule(&adapter
->napi
);
3735 e1000_irq_enable(adapter
);
3741 * e1000_intr - Interrupt Handler
3742 * @irq: interrupt number
3743 * @data: pointer to a network interface device structure
3746 static irqreturn_t
e1000_intr(int irq
, void *data
)
3748 struct net_device
*netdev
= data
;
3749 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3750 struct e1000_hw
*hw
= &adapter
->hw
;
3751 u32 rctl
, icr
= er32(ICR
);
3753 if (unlikely((!icr
) || test_bit(__E1000_DOWN
, &adapter
->flags
)))
3754 return IRQ_NONE
; /* Not our interrupt */
3756 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3757 * not set, then the adapter didn't send an interrupt */
3758 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3759 !(icr
& E1000_ICR_INT_ASSERTED
)))
3762 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3763 * need for the IMC write */
3765 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3766 hw
->get_link_status
= 1;
3767 /* 80003ES2LAN workaround--
3768 * For packet buffer work-around on link down event;
3769 * disable receives here in the ISR and
3770 * reset adapter in watchdog
3772 if (netif_carrier_ok(netdev
) &&
3773 (hw
->mac_type
== e1000_80003es2lan
)) {
3774 /* disable receives */
3776 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3778 /* guard against interrupt when we're going down */
3779 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3780 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3783 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3784 /* disable interrupts, without the synchronize_irq bit */
3786 E1000_WRITE_FLUSH();
3788 if (likely(napi_schedule_prep(&adapter
->napi
))) {
3789 adapter
->total_tx_bytes
= 0;
3790 adapter
->total_tx_packets
= 0;
3791 adapter
->total_rx_bytes
= 0;
3792 adapter
->total_rx_packets
= 0;
3793 __napi_schedule(&adapter
->napi
);
3795 /* this really should not happen! if it does it is basically a
3796 * bug, but not a hard error, so enable ints and continue */
3797 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3798 e1000_irq_enable(adapter
);
3805 * e1000_clean - NAPI Rx polling callback
3806 * @adapter: board private structure
3808 static int e1000_clean(struct napi_struct
*napi
, int budget
)
3810 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
3811 struct net_device
*poll_dev
= adapter
->netdev
;
3812 int tx_cleaned
= 0, work_done
= 0;
3814 adapter
= netdev_priv(poll_dev
);
3816 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[0]);
3818 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3819 &work_done
, budget
);
3824 /* If budget not fully consumed, exit the polling mode */
3825 if (work_done
< budget
) {
3826 if (likely(adapter
->itr_setting
& 3))
3827 e1000_set_itr(adapter
);
3828 napi_complete(napi
);
3829 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3830 e1000_irq_enable(adapter
);
3837 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3838 * @adapter: board private structure
3840 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3841 struct e1000_tx_ring
*tx_ring
)
3843 struct e1000_hw
*hw
= &adapter
->hw
;
3844 struct net_device
*netdev
= adapter
->netdev
;
3845 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3846 struct e1000_buffer
*buffer_info
;
3847 unsigned int i
, eop
;
3848 unsigned int count
= 0;
3849 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3851 i
= tx_ring
->next_to_clean
;
3852 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3853 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3855 while ((eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
3856 (count
< tx_ring
->count
)) {
3857 bool cleaned
= false;
3858 for ( ; !cleaned
; count
++) {
3859 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3860 buffer_info
= &tx_ring
->buffer_info
[i
];
3861 cleaned
= (i
== eop
);
3864 struct sk_buff
*skb
= buffer_info
->skb
;
3865 unsigned int segs
, bytecount
;
3866 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3867 /* multiply data chunks by size of headers */
3868 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3870 total_tx_packets
+= segs
;
3871 total_tx_bytes
+= bytecount
;
3873 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3874 tx_desc
->upper
.data
= 0;
3876 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3879 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3880 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3883 tx_ring
->next_to_clean
= i
;
3885 #define TX_WAKE_THRESHOLD 32
3886 if (unlikely(count
&& netif_carrier_ok(netdev
) &&
3887 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3888 /* Make sure that anybody stopping the queue after this
3889 * sees the new next_to_clean.
3892 if (netif_queue_stopped(netdev
)) {
3893 netif_wake_queue(netdev
);
3894 ++adapter
->restart_queue
;
3898 if (adapter
->detect_tx_hung
) {
3899 /* Detect a transmit hang in hardware, this serializes the
3900 * check with the clearing of time_stamp and movement of i */
3901 adapter
->detect_tx_hung
= false;
3902 if (tx_ring
->buffer_info
[i
].time_stamp
&&
3903 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+
3904 (adapter
->tx_timeout_factor
* HZ
))
3905 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
3907 /* detected Tx unit hang */
3908 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3912 " next_to_use <%x>\n"
3913 " next_to_clean <%x>\n"
3914 "buffer_info[next_to_clean]\n"
3915 " time_stamp <%lx>\n"
3916 " next_to_watch <%x>\n"
3918 " next_to_watch.status <%x>\n",
3919 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3920 sizeof(struct e1000_tx_ring
)),
3921 readl(hw
->hw_addr
+ tx_ring
->tdh
),
3922 readl(hw
->hw_addr
+ tx_ring
->tdt
),
3923 tx_ring
->next_to_use
,
3924 tx_ring
->next_to_clean
,
3925 tx_ring
->buffer_info
[i
].time_stamp
,
3928 eop_desc
->upper
.fields
.status
);
3929 netif_stop_queue(netdev
);
3932 adapter
->total_tx_bytes
+= total_tx_bytes
;
3933 adapter
->total_tx_packets
+= total_tx_packets
;
3934 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
3935 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
3936 return (count
< tx_ring
->count
);
3940 * e1000_rx_checksum - Receive Checksum Offload for 82543
3941 * @adapter: board private structure
3942 * @status_err: receive descriptor status and error fields
3943 * @csum: receive descriptor csum field
3944 * @sk_buff: socket buffer with received data
3947 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
3948 u32 csum
, struct sk_buff
*skb
)
3950 struct e1000_hw
*hw
= &adapter
->hw
;
3951 u16 status
= (u16
)status_err
;
3952 u8 errors
= (u8
)(status_err
>> 24);
3953 skb
->ip_summed
= CHECKSUM_NONE
;
3955 /* 82543 or newer only */
3956 if (unlikely(hw
->mac_type
< e1000_82543
)) return;
3957 /* Ignore Checksum bit is set */
3958 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3959 /* TCP/UDP checksum error bit is set */
3960 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3961 /* let the stack verify checksum errors */
3962 adapter
->hw_csum_err
++;
3965 /* TCP/UDP Checksum has not been calculated */
3966 if (hw
->mac_type
<= e1000_82547_rev_2
) {
3967 if (!(status
& E1000_RXD_STAT_TCPCS
))
3970 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3973 /* It must be a TCP or UDP packet with a valid checksum */
3974 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3975 /* TCP checksum is good */
3976 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3977 } else if (hw
->mac_type
> e1000_82547_rev_2
) {
3978 /* IP fragment with UDP payload */
3979 /* Hardware complements the payload checksum, so we undo it
3980 * and then put the value in host order for further stack use.
3982 __sum16 sum
= (__force __sum16
)htons(csum
);
3983 skb
->csum
= csum_unfold(~sum
);
3984 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3986 adapter
->hw_csum_good
++;
3990 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3991 * @adapter: board private structure
3993 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3994 struct e1000_rx_ring
*rx_ring
,
3995 int *work_done
, int work_to_do
)
3997 struct e1000_hw
*hw
= &adapter
->hw
;
3998 struct net_device
*netdev
= adapter
->netdev
;
3999 struct pci_dev
*pdev
= adapter
->pdev
;
4000 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
4001 struct e1000_buffer
*buffer_info
, *next_buffer
;
4002 unsigned long flags
;
4006 int cleaned_count
= 0;
4007 bool cleaned
= false;
4008 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4010 i
= rx_ring
->next_to_clean
;
4011 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4012 buffer_info
= &rx_ring
->buffer_info
[i
];
4014 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4015 struct sk_buff
*skb
;
4018 if (*work_done
>= work_to_do
)
4022 status
= rx_desc
->status
;
4023 skb
= buffer_info
->skb
;
4024 buffer_info
->skb
= NULL
;
4026 prefetch(skb
->data
- NET_IP_ALIGN
);
4028 if (++i
== rx_ring
->count
) i
= 0;
4029 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4032 next_buffer
= &rx_ring
->buffer_info
[i
];
4036 pci_unmap_single(pdev
,
4038 buffer_info
->length
,
4039 PCI_DMA_FROMDEVICE
);
4040 buffer_info
->dma
= 0;
4042 length
= le16_to_cpu(rx_desc
->length
);
4043 /* !EOP means multiple descriptors were used to store a single
4044 * packet, also make sure the frame isn't just CRC only */
4045 if (unlikely(!(status
& E1000_RXD_STAT_EOP
) || (length
<= 4))) {
4046 /* All receives must fit into a single buffer */
4047 E1000_DBG("%s: Receive packet consumed multiple"
4048 " buffers\n", netdev
->name
);
4050 buffer_info
->skb
= skb
;
4054 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4055 last_byte
= *(skb
->data
+ length
- 1);
4056 if (TBI_ACCEPT(hw
, status
, rx_desc
->errors
, length
,
4058 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4059 e1000_tbi_adjust_stats(hw
, &adapter
->stats
,
4061 spin_unlock_irqrestore(&adapter
->stats_lock
,
4066 buffer_info
->skb
= skb
;
4071 /* adjust length to remove Ethernet CRC, this must be
4072 * done after the TBI_ACCEPT workaround above */
4075 /* probably a little skewed due to removing CRC */
4076 total_rx_bytes
+= length
;
4079 /* code added for copybreak, this should improve
4080 * performance for small packets with large amounts
4081 * of reassembly being done in the stack */
4082 if (length
< copybreak
) {
4083 struct sk_buff
*new_skb
=
4084 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4086 skb_reserve(new_skb
, NET_IP_ALIGN
);
4087 skb_copy_to_linear_data_offset(new_skb
,
4093 /* save the skb in buffer_info as good */
4094 buffer_info
->skb
= skb
;
4097 /* else just continue with the old one */
4099 /* end copybreak code */
4100 skb_put(skb
, length
);
4102 /* Receive Checksum Offload */
4103 e1000_rx_checksum(adapter
,
4105 ((u32
)(rx_desc
->errors
) << 24),
4106 le16_to_cpu(rx_desc
->csum
), skb
);
4108 skb
->protocol
= eth_type_trans(skb
, netdev
);
4110 if (unlikely(adapter
->vlgrp
&&
4111 (status
& E1000_RXD_STAT_VP
))) {
4112 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4113 le16_to_cpu(rx_desc
->special
));
4115 netif_receive_skb(skb
);
4119 rx_desc
->status
= 0;
4121 /* return some buffers to hardware, one at a time is too slow */
4122 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4123 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4127 /* use prefetched values */
4129 buffer_info
= next_buffer
;
4131 rx_ring
->next_to_clean
= i
;
4133 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4135 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4137 adapter
->total_rx_packets
+= total_rx_packets
;
4138 adapter
->total_rx_bytes
+= total_rx_bytes
;
4139 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4140 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4145 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4146 * @adapter: address of board private structure
4149 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4150 struct e1000_rx_ring
*rx_ring
,
4153 struct e1000_hw
*hw
= &adapter
->hw
;
4154 struct net_device
*netdev
= adapter
->netdev
;
4155 struct pci_dev
*pdev
= adapter
->pdev
;
4156 struct e1000_rx_desc
*rx_desc
;
4157 struct e1000_buffer
*buffer_info
;
4158 struct sk_buff
*skb
;
4160 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4162 i
= rx_ring
->next_to_use
;
4163 buffer_info
= &rx_ring
->buffer_info
[i
];
4165 while (cleaned_count
--) {
4166 skb
= buffer_info
->skb
;
4172 skb
= netdev_alloc_skb(netdev
, bufsz
);
4173 if (unlikely(!skb
)) {
4174 /* Better luck next round */
4175 adapter
->alloc_rx_buff_failed
++;
4179 /* Fix for errata 23, can't cross 64kB boundary */
4180 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4181 struct sk_buff
*oldskb
= skb
;
4182 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4183 "at %p\n", bufsz
, skb
->data
);
4184 /* Try again, without freeing the previous */
4185 skb
= netdev_alloc_skb(netdev
, bufsz
);
4186 /* Failed allocation, critical failure */
4188 dev_kfree_skb(oldskb
);
4192 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4195 dev_kfree_skb(oldskb
);
4196 break; /* while !buffer_info->skb */
4199 /* Use new allocation */
4200 dev_kfree_skb(oldskb
);
4202 /* Make buffer alignment 2 beyond a 16 byte boundary
4203 * this will result in a 16 byte aligned IP header after
4204 * the 14 byte MAC header is removed
4206 skb_reserve(skb
, NET_IP_ALIGN
);
4208 buffer_info
->skb
= skb
;
4209 buffer_info
->length
= adapter
->rx_buffer_len
;
4211 buffer_info
->dma
= pci_map_single(pdev
,
4213 adapter
->rx_buffer_len
,
4214 PCI_DMA_FROMDEVICE
);
4216 /* Fix for errata 23, can't cross 64kB boundary */
4217 if (!e1000_check_64k_bound(adapter
,
4218 (void *)(unsigned long)buffer_info
->dma
,
4219 adapter
->rx_buffer_len
)) {
4220 DPRINTK(RX_ERR
, ERR
,
4221 "dma align check failed: %u bytes at %p\n",
4222 adapter
->rx_buffer_len
,
4223 (void *)(unsigned long)buffer_info
->dma
);
4225 buffer_info
->skb
= NULL
;
4227 pci_unmap_single(pdev
, buffer_info
->dma
,
4228 adapter
->rx_buffer_len
,
4229 PCI_DMA_FROMDEVICE
);
4230 buffer_info
->dma
= 0;
4232 break; /* while !buffer_info->skb */
4234 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4235 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4237 if (unlikely(++i
== rx_ring
->count
))
4239 buffer_info
= &rx_ring
->buffer_info
[i
];
4242 if (likely(rx_ring
->next_to_use
!= i
)) {
4243 rx_ring
->next_to_use
= i
;
4244 if (unlikely(i
-- == 0))
4245 i
= (rx_ring
->count
- 1);
4247 /* Force memory writes to complete before letting h/w
4248 * know there are new descriptors to fetch. (Only
4249 * applicable for weak-ordered memory model archs,
4250 * such as IA-64). */
4252 writel(i
, hw
->hw_addr
+ rx_ring
->rdt
);
4257 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4261 static void e1000_smartspeed(struct e1000_adapter
*adapter
)
4263 struct e1000_hw
*hw
= &adapter
->hw
;
4267 if ((hw
->phy_type
!= e1000_phy_igp
) || !hw
->autoneg
||
4268 !(hw
->autoneg_advertised
& ADVERTISE_1000_FULL
))
4271 if (adapter
->smartspeed
== 0) {
4272 /* If Master/Slave config fault is asserted twice,
4273 * we assume back-to-back */
4274 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4275 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4276 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4277 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4278 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4279 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4280 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4281 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
,
4283 adapter
->smartspeed
++;
4284 if (!e1000_phy_setup_autoneg(hw
) &&
4285 !e1000_read_phy_reg(hw
, PHY_CTRL
,
4287 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4288 MII_CR_RESTART_AUTO_NEG
);
4289 e1000_write_phy_reg(hw
, PHY_CTRL
,
4294 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4295 /* If still no link, perhaps using 2/3 pair cable */
4296 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4297 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4298 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
, phy_ctrl
);
4299 if (!e1000_phy_setup_autoneg(hw
) &&
4300 !e1000_read_phy_reg(hw
, PHY_CTRL
, &phy_ctrl
)) {
4301 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4302 MII_CR_RESTART_AUTO_NEG
);
4303 e1000_write_phy_reg(hw
, PHY_CTRL
, phy_ctrl
);
4306 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4307 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4308 adapter
->smartspeed
= 0;
4318 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4324 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4337 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4340 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4341 struct e1000_hw
*hw
= &adapter
->hw
;
4342 struct mii_ioctl_data
*data
= if_mii(ifr
);
4346 unsigned long flags
;
4348 if (hw
->media_type
!= e1000_media_type_copper
)
4353 data
->phy_id
= hw
->phy_addr
;
4356 if (!capable(CAP_NET_ADMIN
))
4358 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4359 if (e1000_read_phy_reg(hw
, data
->reg_num
& 0x1F,
4361 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4364 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4367 if (!capable(CAP_NET_ADMIN
))
4369 if (data
->reg_num
& ~(0x1F))
4371 mii_reg
= data
->val_in
;
4372 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4373 if (e1000_write_phy_reg(hw
, data
->reg_num
,
4375 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4378 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4379 if (hw
->media_type
== e1000_media_type_copper
) {
4380 switch (data
->reg_num
) {
4382 if (mii_reg
& MII_CR_POWER_DOWN
)
4384 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4386 hw
->autoneg_advertised
= 0x2F;
4389 spddplx
= SPEED_1000
;
4390 else if (mii_reg
& 0x2000)
4391 spddplx
= SPEED_100
;
4394 spddplx
+= (mii_reg
& 0x100)
4397 retval
= e1000_set_spd_dplx(adapter
,
4402 if (netif_running(adapter
->netdev
))
4403 e1000_reinit_locked(adapter
);
4405 e1000_reset(adapter
);
4407 case M88E1000_PHY_SPEC_CTRL
:
4408 case M88E1000_EXT_PHY_SPEC_CTRL
:
4409 if (e1000_phy_reset(hw
))
4414 switch (data
->reg_num
) {
4416 if (mii_reg
& MII_CR_POWER_DOWN
)
4418 if (netif_running(adapter
->netdev
))
4419 e1000_reinit_locked(adapter
);
4421 e1000_reset(adapter
);
4429 return E1000_SUCCESS
;
4432 void e1000_pci_set_mwi(struct e1000_hw
*hw
)
4434 struct e1000_adapter
*adapter
= hw
->back
;
4435 int ret_val
= pci_set_mwi(adapter
->pdev
);
4438 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4441 void e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4443 struct e1000_adapter
*adapter
= hw
->back
;
4445 pci_clear_mwi(adapter
->pdev
);
4448 int e1000_pcix_get_mmrbc(struct e1000_hw
*hw
)
4450 struct e1000_adapter
*adapter
= hw
->back
;
4451 return pcix_get_mmrbc(adapter
->pdev
);
4454 void e1000_pcix_set_mmrbc(struct e1000_hw
*hw
, int mmrbc
)
4456 struct e1000_adapter
*adapter
= hw
->back
;
4457 pcix_set_mmrbc(adapter
->pdev
, mmrbc
);
4460 s32
e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, u32 reg
, u16
*value
)
4462 struct e1000_adapter
*adapter
= hw
->back
;
4465 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4467 return -E1000_ERR_CONFIG
;
4469 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4471 return E1000_SUCCESS
;
4474 void e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, u32 value
)
4479 static void e1000_vlan_rx_register(struct net_device
*netdev
,
4480 struct vlan_group
*grp
)
4482 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4483 struct e1000_hw
*hw
= &adapter
->hw
;
4486 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4487 e1000_irq_disable(adapter
);
4488 adapter
->vlgrp
= grp
;
4491 /* enable VLAN tag insert/strip */
4493 ctrl
|= E1000_CTRL_VME
;
4496 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4497 /* enable VLAN receive filtering */
4499 rctl
&= ~E1000_RCTL_CFIEN
;
4501 e1000_update_mng_vlan(adapter
);
4504 /* disable VLAN tag insert/strip */
4506 ctrl
&= ~E1000_CTRL_VME
;
4509 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4510 if (adapter
->mng_vlan_id
!=
4511 (u16
)E1000_MNG_VLAN_NONE
) {
4512 e1000_vlan_rx_kill_vid(netdev
,
4513 adapter
->mng_vlan_id
);
4514 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4519 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4520 e1000_irq_enable(adapter
);
4523 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4525 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4526 struct e1000_hw
*hw
= &adapter
->hw
;
4529 if ((hw
->mng_cookie
.status
&
4530 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4531 (vid
== adapter
->mng_vlan_id
))
4533 /* add VID to filter table */
4534 index
= (vid
>> 5) & 0x7F;
4535 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4536 vfta
|= (1 << (vid
& 0x1F));
4537 e1000_write_vfta(hw
, index
, vfta
);
4540 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4542 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4543 struct e1000_hw
*hw
= &adapter
->hw
;
4546 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4547 e1000_irq_disable(adapter
);
4548 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4549 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4550 e1000_irq_enable(adapter
);
4552 if ((hw
->mng_cookie
.status
&
4553 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4554 (vid
== adapter
->mng_vlan_id
)) {
4555 /* release control to f/w */
4556 e1000_release_hw_control(adapter
);
4560 /* remove VID from filter table */
4561 index
= (vid
>> 5) & 0x7F;
4562 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4563 vfta
&= ~(1 << (vid
& 0x1F));
4564 e1000_write_vfta(hw
, index
, vfta
);
4567 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
4569 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4571 if (adapter
->vlgrp
) {
4573 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4574 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4576 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4581 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
)
4583 struct e1000_hw
*hw
= &adapter
->hw
;
4587 /* Fiber NICs only allow 1000 gbps Full duplex */
4588 if ((hw
->media_type
== e1000_media_type_fiber
) &&
4589 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4590 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4595 case SPEED_10
+ DUPLEX_HALF
:
4596 hw
->forced_speed_duplex
= e1000_10_half
;
4598 case SPEED_10
+ DUPLEX_FULL
:
4599 hw
->forced_speed_duplex
= e1000_10_full
;
4601 case SPEED_100
+ DUPLEX_HALF
:
4602 hw
->forced_speed_duplex
= e1000_100_half
;
4604 case SPEED_100
+ DUPLEX_FULL
:
4605 hw
->forced_speed_duplex
= e1000_100_full
;
4607 case SPEED_1000
+ DUPLEX_FULL
:
4609 hw
->autoneg_advertised
= ADVERTISE_1000_FULL
;
4611 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4613 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4619 static int __e1000_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
4621 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4622 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4623 struct e1000_hw
*hw
= &adapter
->hw
;
4624 u32 ctrl
, ctrl_ext
, rctl
, status
;
4625 u32 wufc
= adapter
->wol
;
4630 netif_device_detach(netdev
);
4632 if (netif_running(netdev
)) {
4633 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4634 e1000_down(adapter
);
4638 retval
= pci_save_state(pdev
);
4643 status
= er32(STATUS
);
4644 if (status
& E1000_STATUS_LU
)
4645 wufc
&= ~E1000_WUFC_LNKC
;
4648 e1000_setup_rctl(adapter
);
4649 e1000_set_rx_mode(netdev
);
4651 /* turn on all-multi mode if wake on multicast is enabled */
4652 if (wufc
& E1000_WUFC_MC
) {
4654 rctl
|= E1000_RCTL_MPE
;
4658 if (hw
->mac_type
>= e1000_82540
) {
4660 /* advertise wake from D3Cold */
4661 #define E1000_CTRL_ADVD3WUC 0x00100000
4662 /* phy power management enable */
4663 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4664 ctrl
|= E1000_CTRL_ADVD3WUC
|
4665 E1000_CTRL_EN_PHY_PWR_MGMT
;
4669 if (hw
->media_type
== e1000_media_type_fiber
||
4670 hw
->media_type
== e1000_media_type_internal_serdes
) {
4671 /* keep the laser running in D3 */
4672 ctrl_ext
= er32(CTRL_EXT
);
4673 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4674 ew32(CTRL_EXT
, ctrl_ext
);
4677 /* Allow time for pending master requests to run */
4678 e1000_disable_pciex_master(hw
);
4680 ew32(WUC
, E1000_WUC_PME_EN
);
4687 e1000_release_manageability(adapter
);
4689 *enable_wake
= !!wufc
;
4691 /* make sure adapter isn't asleep if manageability is enabled */
4692 if (adapter
->en_mng_pt
)
4693 *enable_wake
= true;
4695 if (hw
->phy_type
== e1000_phy_igp_3
)
4696 e1000_phy_powerdown_workaround(hw
);
4698 if (netif_running(netdev
))
4699 e1000_free_irq(adapter
);
4701 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4702 * would have already happened in close and is redundant. */
4703 e1000_release_hw_control(adapter
);
4705 pci_disable_device(pdev
);
4711 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4716 retval
= __e1000_shutdown(pdev
, &wake
);
4721 pci_prepare_to_sleep(pdev
);
4723 pci_wake_from_d3(pdev
, false);
4724 pci_set_power_state(pdev
, PCI_D3hot
);
4730 static int e1000_resume(struct pci_dev
*pdev
)
4732 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4733 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4734 struct e1000_hw
*hw
= &adapter
->hw
;
4737 pci_set_power_state(pdev
, PCI_D0
);
4738 pci_restore_state(pdev
);
4740 if (adapter
->need_ioport
)
4741 err
= pci_enable_device(pdev
);
4743 err
= pci_enable_device_mem(pdev
);
4745 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4748 pci_set_master(pdev
);
4750 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4751 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4753 if (netif_running(netdev
)) {
4754 err
= e1000_request_irq(adapter
);
4759 e1000_power_up_phy(adapter
);
4760 e1000_reset(adapter
);
4763 e1000_init_manageability(adapter
);
4765 if (netif_running(netdev
))
4768 netif_device_attach(netdev
);
4770 /* If the controller is 82573 and f/w is AMT, do not set
4771 * DRV_LOAD until the interface is up. For all other cases,
4772 * let the f/w know that the h/w is now under the control
4774 if (hw
->mac_type
!= e1000_82573
||
4775 !e1000_check_mng_mode(hw
))
4776 e1000_get_hw_control(adapter
);
4782 static void e1000_shutdown(struct pci_dev
*pdev
)
4786 __e1000_shutdown(pdev
, &wake
);
4788 if (system_state
== SYSTEM_POWER_OFF
) {
4789 pci_wake_from_d3(pdev
, wake
);
4790 pci_set_power_state(pdev
, PCI_D3hot
);
4794 #ifdef CONFIG_NET_POLL_CONTROLLER
4796 * Polling 'interrupt' - used by things like netconsole to send skbs
4797 * without having to re-enable interrupts. It's not called while
4798 * the interrupt routine is executing.
4800 static void e1000_netpoll(struct net_device
*netdev
)
4802 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4804 disable_irq(adapter
->pdev
->irq
);
4805 e1000_intr(adapter
->pdev
->irq
, netdev
);
4806 enable_irq(adapter
->pdev
->irq
);
4811 * e1000_io_error_detected - called when PCI error is detected
4812 * @pdev: Pointer to PCI device
4813 * @state: The current pci conneection state
4815 * This function is called after a PCI bus error affecting
4816 * this device has been detected.
4818 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4819 pci_channel_state_t state
)
4821 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4822 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4824 netif_device_detach(netdev
);
4826 if (state
== pci_channel_io_perm_failure
)
4827 return PCI_ERS_RESULT_DISCONNECT
;
4829 if (netif_running(netdev
))
4830 e1000_down(adapter
);
4831 pci_disable_device(pdev
);
4833 /* Request a slot slot reset. */
4834 return PCI_ERS_RESULT_NEED_RESET
;
4838 * e1000_io_slot_reset - called after the pci bus has been reset.
4839 * @pdev: Pointer to PCI device
4841 * Restart the card from scratch, as if from a cold-boot. Implementation
4842 * resembles the first-half of the e1000_resume routine.
4844 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4846 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4847 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4848 struct e1000_hw
*hw
= &adapter
->hw
;
4851 if (adapter
->need_ioport
)
4852 err
= pci_enable_device(pdev
);
4854 err
= pci_enable_device_mem(pdev
);
4856 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4857 return PCI_ERS_RESULT_DISCONNECT
;
4859 pci_set_master(pdev
);
4861 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4862 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4864 e1000_reset(adapter
);
4867 return PCI_ERS_RESULT_RECOVERED
;
4871 * e1000_io_resume - called when traffic can start flowing again.
4872 * @pdev: Pointer to PCI device
4874 * This callback is called when the error recovery driver tells us that
4875 * its OK to resume normal operation. Implementation resembles the
4876 * second-half of the e1000_resume routine.
4878 static void e1000_io_resume(struct pci_dev
*pdev
)
4880 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4881 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4882 struct e1000_hw
*hw
= &adapter
->hw
;
4884 e1000_init_manageability(adapter
);
4886 if (netif_running(netdev
)) {
4887 if (e1000_up(adapter
)) {
4888 printk("e1000: can't bring device back up after reset\n");
4893 netif_device_attach(netdev
);
4895 /* If the controller is 82573 and f/w is AMT, do not set
4896 * DRV_LOAD until the interface is up. For all other cases,
4897 * let the f/w know that the h/w is now under the control
4899 if (hw
->mac_type
!= e1000_82573
||
4900 !e1000_check_mng_mode(hw
))
4901 e1000_get_hw_control(adapter
);