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
);
159 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 /* fire a link change interrupt to start the watchdog */
502 ew32(ICS
, E1000_ICS_LSC
);
507 * e1000_power_up_phy - restore link in case the phy was powered down
508 * @adapter: address of board private structure
510 * The phy may be powered down to save power and turn off link when the
511 * driver is unloaded and wake on lan is not enabled (among others)
512 * *** this routine MUST be followed by a call to e1000_reset ***
516 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
518 struct e1000_hw
*hw
= &adapter
->hw
;
521 /* Just clear the power down bit to wake the phy back up */
522 if (hw
->media_type
== e1000_media_type_copper
) {
523 /* according to the manual, the phy will retain its
524 * settings across a power-down/up cycle */
525 e1000_read_phy_reg(hw
, PHY_CTRL
, &mii_reg
);
526 mii_reg
&= ~MII_CR_POWER_DOWN
;
527 e1000_write_phy_reg(hw
, PHY_CTRL
, mii_reg
);
531 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
533 struct e1000_hw
*hw
= &adapter
->hw
;
535 /* Power down the PHY so no link is implied when interface is down *
536 * The PHY cannot be powered down if any of the following is true *
539 * (c) SoL/IDER session is active */
540 if (!adapter
->wol
&& hw
->mac_type
>= e1000_82540
&&
541 hw
->media_type
== e1000_media_type_copper
) {
544 switch (hw
->mac_type
) {
547 case e1000_82545_rev_3
:
549 case e1000_82546_rev_3
:
551 case e1000_82541_rev_2
:
553 case e1000_82547_rev_2
:
554 if (er32(MANC
) & E1000_MANC_SMBUS_EN
)
560 case e1000_80003es2lan
:
562 if (e1000_check_mng_mode(hw
) ||
563 e1000_check_phy_reset_block(hw
))
569 e1000_read_phy_reg(hw
, PHY_CTRL
, &mii_reg
);
570 mii_reg
|= MII_CR_POWER_DOWN
;
571 e1000_write_phy_reg(hw
, PHY_CTRL
, mii_reg
);
578 void e1000_down(struct e1000_adapter
*adapter
)
580 struct net_device
*netdev
= adapter
->netdev
;
582 /* signal that we're down so the interrupt handler does not
583 * reschedule our watchdog timer */
584 set_bit(__E1000_DOWN
, &adapter
->flags
);
586 napi_disable(&adapter
->napi
);
588 e1000_irq_disable(adapter
);
590 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
591 del_timer_sync(&adapter
->watchdog_timer
);
592 del_timer_sync(&adapter
->phy_info_timer
);
594 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
595 adapter
->link_speed
= 0;
596 adapter
->link_duplex
= 0;
597 netif_carrier_off(netdev
);
598 netif_stop_queue(netdev
);
600 e1000_reset(adapter
);
601 e1000_clean_all_tx_rings(adapter
);
602 e1000_clean_all_rx_rings(adapter
);
605 void e1000_reinit_locked(struct e1000_adapter
*adapter
)
607 WARN_ON(in_interrupt());
608 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
612 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
615 void e1000_reset(struct e1000_adapter
*adapter
)
617 struct e1000_hw
*hw
= &adapter
->hw
;
618 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
619 u16 fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
620 bool legacy_pba_adjust
= false;
622 /* Repartition Pba for greater than 9k mtu
623 * To take effect CTRL.RST is required.
626 switch (hw
->mac_type
) {
627 case e1000_82542_rev2_0
:
628 case e1000_82542_rev2_1
:
633 case e1000_82541_rev_2
:
634 legacy_pba_adjust
= true;
638 case e1000_82545_rev_3
:
640 case e1000_82546_rev_3
:
644 case e1000_82547_rev_2
:
645 legacy_pba_adjust
= true;
650 case e1000_80003es2lan
:
658 case e1000_undefined
:
663 if (legacy_pba_adjust
) {
664 if (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
)
665 pba
-= 8; /* allocate more FIFO for Tx */
667 if (hw
->mac_type
== e1000_82547
) {
668 adapter
->tx_fifo_head
= 0;
669 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
670 adapter
->tx_fifo_size
=
671 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
672 atomic_set(&adapter
->tx_fifo_stall
, 0);
674 } else if (hw
->max_frame_size
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
675 /* adjust PBA for jumbo frames */
678 /* To maintain wire speed transmits, the Tx FIFO should be
679 * large enough to accomodate two full transmit packets,
680 * rounded up to the next 1KB and expressed in KB. Likewise,
681 * the Rx FIFO should be large enough to accomodate at least
682 * one full receive packet and is similarly rounded up and
683 * expressed in KB. */
685 /* upper 16 bits has Tx packet buffer allocation size in KB */
686 tx_space
= pba
>> 16;
687 /* lower 16 bits has Rx packet buffer allocation size in KB */
689 /* don't include ethernet FCS because hardware appends/strips */
690 min_rx_space
= adapter
->netdev
->mtu
+ ENET_HEADER_SIZE
+
692 min_tx_space
= min_rx_space
;
694 min_tx_space
= ALIGN(min_tx_space
, 1024);
696 min_rx_space
= ALIGN(min_rx_space
, 1024);
699 /* If current Tx allocation is less than the min Tx FIFO size,
700 * and the min Tx FIFO size is less than the current Rx FIFO
701 * allocation, take space away from current Rx allocation */
702 if (tx_space
< min_tx_space
&&
703 ((min_tx_space
- tx_space
) < pba
)) {
704 pba
= pba
- (min_tx_space
- tx_space
);
706 /* PCI/PCIx hardware has PBA alignment constraints */
707 switch (hw
->mac_type
) {
708 case e1000_82545
... e1000_82546_rev_3
:
709 pba
&= ~(E1000_PBA_8K
- 1);
715 /* if short on rx space, rx wins and must trump tx
716 * adjustment or use Early Receive if available */
717 if (pba
< min_rx_space
) {
718 switch (hw
->mac_type
) {
720 /* ERT enabled in e1000_configure_rx */
732 /* flow control settings */
733 /* Set the FC high water mark to 90% of the FIFO size.
734 * Required to clear last 3 LSB */
735 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
736 /* We can't use 90% on small FIFOs because the remainder
737 * would be less than 1 full frame. In this case, we size
738 * it to allow at least a full frame above the high water
740 if (pba
< E1000_PBA_16K
)
741 fc_high_water_mark
= (pba
* 1024) - 1600;
743 hw
->fc_high_water
= fc_high_water_mark
;
744 hw
->fc_low_water
= fc_high_water_mark
- 8;
745 if (hw
->mac_type
== e1000_80003es2lan
)
746 hw
->fc_pause_time
= 0xFFFF;
748 hw
->fc_pause_time
= E1000_FC_PAUSE_TIME
;
750 hw
->fc
= hw
->original_fc
;
752 /* Allow time for pending master requests to run */
754 if (hw
->mac_type
>= e1000_82544
)
757 if (e1000_init_hw(hw
))
758 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
759 e1000_update_mng_vlan(adapter
);
761 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
762 if (hw
->mac_type
>= e1000_82544
&&
763 hw
->mac_type
<= e1000_82547_rev_2
&&
765 hw
->autoneg_advertised
== ADVERTISE_1000_FULL
) {
766 u32 ctrl
= er32(CTRL
);
767 /* clear phy power management bit if we are in gig only mode,
768 * which if enabled will attempt negotiation to 100Mb, which
769 * can cause a loss of link at power off or driver unload */
770 ctrl
&= ~E1000_CTRL_SWDPIN3
;
774 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
775 ew32(VET
, ETHERNET_IEEE_VLAN_TYPE
);
777 e1000_reset_adaptive(hw
);
778 e1000_phy_get_info(hw
, &adapter
->phy_info
);
780 if (!adapter
->smart_power_down
&&
781 (hw
->mac_type
== e1000_82571
||
782 hw
->mac_type
== e1000_82572
)) {
784 /* speed up time to link by disabling smart power down, ignore
785 * the return value of this function because there is nothing
786 * different we would do if it failed */
787 e1000_read_phy_reg(hw
, IGP02E1000_PHY_POWER_MGMT
,
789 phy_data
&= ~IGP02E1000_PM_SPD
;
790 e1000_write_phy_reg(hw
, IGP02E1000_PHY_POWER_MGMT
,
794 e1000_release_manageability(adapter
);
798 * Dump the eeprom for users having checksum issues
800 static void e1000_dump_eeprom(struct e1000_adapter
*adapter
)
802 struct net_device
*netdev
= adapter
->netdev
;
803 struct ethtool_eeprom eeprom
;
804 const struct ethtool_ops
*ops
= netdev
->ethtool_ops
;
807 u16 csum_old
, csum_new
= 0;
809 eeprom
.len
= ops
->get_eeprom_len(netdev
);
812 data
= kmalloc(eeprom
.len
, GFP_KERNEL
);
814 printk(KERN_ERR
"Unable to allocate memory to dump EEPROM"
819 ops
->get_eeprom(netdev
, &eeprom
, data
);
821 csum_old
= (data
[EEPROM_CHECKSUM_REG
* 2]) +
822 (data
[EEPROM_CHECKSUM_REG
* 2 + 1] << 8);
823 for (i
= 0; i
< EEPROM_CHECKSUM_REG
* 2; i
+= 2)
824 csum_new
+= data
[i
] + (data
[i
+ 1] << 8);
825 csum_new
= EEPROM_SUM
- csum_new
;
827 printk(KERN_ERR
"/*********************/\n");
828 printk(KERN_ERR
"Current EEPROM Checksum : 0x%04x\n", csum_old
);
829 printk(KERN_ERR
"Calculated : 0x%04x\n", csum_new
);
831 printk(KERN_ERR
"Offset Values\n");
832 printk(KERN_ERR
"======== ======\n");
833 print_hex_dump(KERN_ERR
, "", DUMP_PREFIX_OFFSET
, 16, 1, data
, 128, 0);
835 printk(KERN_ERR
"Include this output when contacting your support "
837 printk(KERN_ERR
"This is not a software error! Something bad "
838 "happened to your hardware or\n");
839 printk(KERN_ERR
"EEPROM image. Ignoring this "
840 "problem could result in further problems,\n");
841 printk(KERN_ERR
"possibly loss of data, corruption or system hangs!\n");
842 printk(KERN_ERR
"The MAC Address will be reset to 00:00:00:00:00:00, "
843 "which is invalid\n");
844 printk(KERN_ERR
"and requires you to set the proper MAC "
845 "address manually before continuing\n");
846 printk(KERN_ERR
"to enable this network device.\n");
847 printk(KERN_ERR
"Please inspect the EEPROM dump and report the issue "
848 "to your hardware vendor\n");
849 printk(KERN_ERR
"or Intel Customer Support.\n");
850 printk(KERN_ERR
"/*********************/\n");
856 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not
857 * @pdev: PCI device information struct
859 * Return true if an adapter needs ioport resources
861 static int e1000_is_need_ioport(struct pci_dev
*pdev
)
863 switch (pdev
->device
) {
864 case E1000_DEV_ID_82540EM
:
865 case E1000_DEV_ID_82540EM_LOM
:
866 case E1000_DEV_ID_82540EP
:
867 case E1000_DEV_ID_82540EP_LOM
:
868 case E1000_DEV_ID_82540EP_LP
:
869 case E1000_DEV_ID_82541EI
:
870 case E1000_DEV_ID_82541EI_MOBILE
:
871 case E1000_DEV_ID_82541ER
:
872 case E1000_DEV_ID_82541ER_LOM
:
873 case E1000_DEV_ID_82541GI
:
874 case E1000_DEV_ID_82541GI_LF
:
875 case E1000_DEV_ID_82541GI_MOBILE
:
876 case E1000_DEV_ID_82544EI_COPPER
:
877 case E1000_DEV_ID_82544EI_FIBER
:
878 case E1000_DEV_ID_82544GC_COPPER
:
879 case E1000_DEV_ID_82544GC_LOM
:
880 case E1000_DEV_ID_82545EM_COPPER
:
881 case E1000_DEV_ID_82545EM_FIBER
:
882 case E1000_DEV_ID_82546EB_COPPER
:
883 case E1000_DEV_ID_82546EB_FIBER
:
884 case E1000_DEV_ID_82546EB_QUAD_COPPER
:
891 static const struct net_device_ops e1000_netdev_ops
= {
892 .ndo_open
= e1000_open
,
893 .ndo_stop
= e1000_close
,
894 .ndo_start_xmit
= e1000_xmit_frame
,
895 .ndo_get_stats
= e1000_get_stats
,
896 .ndo_set_rx_mode
= e1000_set_rx_mode
,
897 .ndo_set_mac_address
= e1000_set_mac
,
898 .ndo_tx_timeout
= e1000_tx_timeout
,
899 .ndo_change_mtu
= e1000_change_mtu
,
900 .ndo_do_ioctl
= e1000_ioctl
,
901 .ndo_validate_addr
= eth_validate_addr
,
903 .ndo_vlan_rx_register
= e1000_vlan_rx_register
,
904 .ndo_vlan_rx_add_vid
= e1000_vlan_rx_add_vid
,
905 .ndo_vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
,
906 #ifdef CONFIG_NET_POLL_CONTROLLER
907 .ndo_poll_controller
= e1000_netpoll
,
912 * e1000_probe - Device Initialization Routine
913 * @pdev: PCI device information struct
914 * @ent: entry in e1000_pci_tbl
916 * Returns 0 on success, negative on failure
918 * e1000_probe initializes an adapter identified by a pci_dev structure.
919 * The OS initialization, configuring of the adapter private structure,
920 * and a hardware reset occur.
922 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
923 const struct pci_device_id
*ent
)
925 struct net_device
*netdev
;
926 struct e1000_adapter
*adapter
;
929 static int cards_found
= 0;
930 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
931 int i
, err
, pci_using_dac
;
933 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
934 int bars
, need_ioport
;
936 /* do not allocate ioport bars when not needed */
937 need_ioport
= e1000_is_need_ioport(pdev
);
939 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
940 err
= pci_enable_device(pdev
);
942 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
943 err
= pci_enable_device_mem(pdev
);
948 if (!pci_set_dma_mask(pdev
, DMA_64BIT_MASK
) &&
949 !pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
)) {
952 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
954 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
956 E1000_ERR("No usable DMA configuration, "
964 err
= pci_request_selected_regions(pdev
, bars
, e1000_driver_name
);
968 pci_set_master(pdev
);
971 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
973 goto err_alloc_etherdev
;
975 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
977 pci_set_drvdata(pdev
, netdev
);
978 adapter
= netdev_priv(netdev
);
979 adapter
->netdev
= netdev
;
980 adapter
->pdev
= pdev
;
981 adapter
->msg_enable
= (1 << debug
) - 1;
982 adapter
->bars
= bars
;
983 adapter
->need_ioport
= need_ioport
;
989 hw
->hw_addr
= pci_ioremap_bar(pdev
, BAR_0
);
993 if (adapter
->need_ioport
) {
994 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
995 if (pci_resource_len(pdev
, i
) == 0)
997 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
998 hw
->io_base
= pci_resource_start(pdev
, i
);
1004 netdev
->netdev_ops
= &e1000_netdev_ops
;
1005 e1000_set_ethtool_ops(netdev
);
1006 netdev
->watchdog_timeo
= 5 * HZ
;
1007 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
1009 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1011 adapter
->bd_number
= cards_found
;
1013 /* setup the private structure */
1015 err
= e1000_sw_init(adapter
);
1020 /* Flash BAR mapping must happen after e1000_sw_init
1021 * because it depends on mac_type */
1022 if ((hw
->mac_type
== e1000_ich8lan
) &&
1023 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
1024 hw
->flash_address
= pci_ioremap_bar(pdev
, 1);
1025 if (!hw
->flash_address
)
1029 if (e1000_check_phy_reset_block(hw
))
1030 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
1032 if (hw
->mac_type
>= e1000_82543
) {
1033 netdev
->features
= NETIF_F_SG
|
1035 NETIF_F_HW_VLAN_TX
|
1036 NETIF_F_HW_VLAN_RX
|
1037 NETIF_F_HW_VLAN_FILTER
;
1038 if (hw
->mac_type
== e1000_ich8lan
)
1039 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
1042 if ((hw
->mac_type
>= e1000_82544
) &&
1043 (hw
->mac_type
!= e1000_82547
))
1044 netdev
->features
|= NETIF_F_TSO
;
1046 if (hw
->mac_type
> e1000_82547_rev_2
)
1047 netdev
->features
|= NETIF_F_TSO6
;
1049 netdev
->features
|= NETIF_F_HIGHDMA
;
1051 netdev
->vlan_features
|= NETIF_F_TSO
;
1052 netdev
->vlan_features
|= NETIF_F_TSO6
;
1053 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1054 netdev
->vlan_features
|= NETIF_F_SG
;
1056 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(hw
);
1058 /* initialize eeprom parameters */
1059 if (e1000_init_eeprom_params(hw
)) {
1060 E1000_ERR("EEPROM initialization failed\n");
1064 /* before reading the EEPROM, reset the controller to
1065 * put the device in a known good starting state */
1069 /* make sure the EEPROM is good */
1070 if (e1000_validate_eeprom_checksum(hw
) < 0) {
1071 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
1072 e1000_dump_eeprom(adapter
);
1074 * set MAC address to all zeroes to invalidate and temporary
1075 * disable this device for the user. This blocks regular
1076 * traffic while still permitting ethtool ioctls from reaching
1077 * the hardware as well as allowing the user to run the
1078 * interface after manually setting a hw addr using
1081 memset(hw
->mac_addr
, 0, netdev
->addr_len
);
1083 /* copy the MAC address out of the EEPROM */
1084 if (e1000_read_mac_addr(hw
))
1085 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
1087 /* don't block initalization here due to bad MAC address */
1088 memcpy(netdev
->dev_addr
, hw
->mac_addr
, netdev
->addr_len
);
1089 memcpy(netdev
->perm_addr
, hw
->mac_addr
, netdev
->addr_len
);
1091 if (!is_valid_ether_addr(netdev
->perm_addr
))
1092 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
1094 e1000_get_bus_info(hw
);
1096 init_timer(&adapter
->tx_fifo_stall_timer
);
1097 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
1098 adapter
->tx_fifo_stall_timer
.data
= (unsigned long)adapter
;
1100 init_timer(&adapter
->watchdog_timer
);
1101 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
1102 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1104 init_timer(&adapter
->phy_info_timer
);
1105 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
1106 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
1108 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
1110 e1000_check_options(adapter
);
1112 /* Initial Wake on LAN setting
1113 * If APM wake is enabled in the EEPROM,
1114 * enable the ACPI Magic Packet filter
1117 switch (hw
->mac_type
) {
1118 case e1000_82542_rev2_0
:
1119 case e1000_82542_rev2_1
:
1123 e1000_read_eeprom(hw
,
1124 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
1125 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
1128 e1000_read_eeprom(hw
,
1129 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
1130 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
1133 case e1000_82546_rev_3
:
1135 case e1000_80003es2lan
:
1136 if (er32(STATUS
) & E1000_STATUS_FUNC_1
){
1137 e1000_read_eeprom(hw
,
1138 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1143 e1000_read_eeprom(hw
,
1144 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1147 if (eeprom_data
& eeprom_apme_mask
)
1148 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1150 /* now that we have the eeprom settings, apply the special cases
1151 * where the eeprom may be wrong or the board simply won't support
1152 * wake on lan on a particular port */
1153 switch (pdev
->device
) {
1154 case E1000_DEV_ID_82546GB_PCIE
:
1155 adapter
->eeprom_wol
= 0;
1157 case E1000_DEV_ID_82546EB_FIBER
:
1158 case E1000_DEV_ID_82546GB_FIBER
:
1159 case E1000_DEV_ID_82571EB_FIBER
:
1160 /* Wake events only supported on port A for dual fiber
1161 * regardless of eeprom setting */
1162 if (er32(STATUS
) & E1000_STATUS_FUNC_1
)
1163 adapter
->eeprom_wol
= 0;
1165 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
1166 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
1167 case E1000_DEV_ID_82571EB_QUAD_FIBER
:
1168 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
1169 case E1000_DEV_ID_82571PT_QUAD_COPPER
:
1170 /* if quad port adapter, disable WoL on all but port A */
1171 if (global_quad_port_a
!= 0)
1172 adapter
->eeprom_wol
= 0;
1174 adapter
->quad_port_a
= 1;
1175 /* Reset for multiple quad port adapters */
1176 if (++global_quad_port_a
== 4)
1177 global_quad_port_a
= 0;
1181 /* initialize the wol settings based on the eeprom settings */
1182 adapter
->wol
= adapter
->eeprom_wol
;
1183 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1185 /* print bus type/speed/width info */
1186 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1187 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1188 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1189 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1190 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1191 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1192 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1193 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1194 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1195 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1196 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1199 printk("%pM\n", netdev
->dev_addr
);
1201 if (hw
->bus_type
== e1000_bus_type_pci_express
) {
1202 DPRINTK(PROBE
, WARNING
, "This device (id %04x:%04x) will no "
1203 "longer be supported by this driver in the future.\n",
1204 pdev
->vendor
, pdev
->device
);
1205 DPRINTK(PROBE
, WARNING
, "please use the \"e1000e\" "
1206 "driver instead.\n");
1209 /* reset the hardware with the new settings */
1210 e1000_reset(adapter
);
1212 /* If the controller is 82573 and f/w is AMT, do not set
1213 * DRV_LOAD until the interface is up. For all other cases,
1214 * let the f/w know that the h/w is now under the control
1216 if (hw
->mac_type
!= e1000_82573
||
1217 !e1000_check_mng_mode(hw
))
1218 e1000_get_hw_control(adapter
);
1220 /* tell the stack to leave us alone until e1000_open() is called */
1221 netif_carrier_off(netdev
);
1222 netif_stop_queue(netdev
);
1224 strcpy(netdev
->name
, "eth%d");
1225 err
= register_netdev(netdev
);
1229 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1235 e1000_release_hw_control(adapter
);
1237 if (!e1000_check_phy_reset_block(hw
))
1238 e1000_phy_hw_reset(hw
);
1240 if (hw
->flash_address
)
1241 iounmap(hw
->flash_address
);
1243 kfree(adapter
->tx_ring
);
1244 kfree(adapter
->rx_ring
);
1246 iounmap(hw
->hw_addr
);
1248 free_netdev(netdev
);
1250 pci_release_selected_regions(pdev
, bars
);
1253 pci_disable_device(pdev
);
1258 * e1000_remove - Device Removal Routine
1259 * @pdev: PCI device information struct
1261 * e1000_remove is called by the PCI subsystem to alert the driver
1262 * that it should release a PCI device. The could be caused by a
1263 * Hot-Plug event, or because the driver is going to be removed from
1267 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
1269 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1270 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1271 struct e1000_hw
*hw
= &adapter
->hw
;
1273 cancel_work_sync(&adapter
->reset_task
);
1275 e1000_release_manageability(adapter
);
1277 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1278 * would have already happened in close and is redundant. */
1279 e1000_release_hw_control(adapter
);
1281 unregister_netdev(netdev
);
1283 if (!e1000_check_phy_reset_block(hw
))
1284 e1000_phy_hw_reset(hw
);
1286 kfree(adapter
->tx_ring
);
1287 kfree(adapter
->rx_ring
);
1289 iounmap(hw
->hw_addr
);
1290 if (hw
->flash_address
)
1291 iounmap(hw
->flash_address
);
1292 pci_release_selected_regions(pdev
, adapter
->bars
);
1294 free_netdev(netdev
);
1296 pci_disable_device(pdev
);
1300 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1301 * @adapter: board private structure to initialize
1303 * e1000_sw_init initializes the Adapter private data structure.
1304 * Fields are initialized based on PCI device information and
1305 * OS network device settings (MTU size).
1308 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
1310 struct e1000_hw
*hw
= &adapter
->hw
;
1311 struct net_device
*netdev
= adapter
->netdev
;
1312 struct pci_dev
*pdev
= adapter
->pdev
;
1314 /* PCI config space info */
1316 hw
->vendor_id
= pdev
->vendor
;
1317 hw
->device_id
= pdev
->device
;
1318 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1319 hw
->subsystem_id
= pdev
->subsystem_device
;
1320 hw
->revision_id
= pdev
->revision
;
1322 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1324 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1325 hw
->max_frame_size
= netdev
->mtu
+
1326 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1327 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1329 /* identify the MAC */
1331 if (e1000_set_mac_type(hw
)) {
1332 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1336 switch (hw
->mac_type
) {
1341 case e1000_82541_rev_2
:
1342 case e1000_82547_rev_2
:
1343 hw
->phy_init_script
= 1;
1347 e1000_set_media_type(hw
);
1349 hw
->wait_autoneg_complete
= false;
1350 hw
->tbi_compatibility_en
= true;
1351 hw
->adaptive_ifs
= true;
1353 /* Copper options */
1355 if (hw
->media_type
== e1000_media_type_copper
) {
1356 hw
->mdix
= AUTO_ALL_MODES
;
1357 hw
->disable_polarity_correction
= false;
1358 hw
->master_slave
= E1000_MASTER_SLAVE
;
1361 adapter
->num_tx_queues
= 1;
1362 adapter
->num_rx_queues
= 1;
1364 if (e1000_alloc_queues(adapter
)) {
1365 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1369 /* Explicitly disable IRQ since the NIC can be in any state. */
1370 e1000_irq_disable(adapter
);
1372 spin_lock_init(&adapter
->stats_lock
);
1374 set_bit(__E1000_DOWN
, &adapter
->flags
);
1380 * e1000_alloc_queues - Allocate memory for all rings
1381 * @adapter: board private structure to initialize
1383 * We allocate one ring per queue at run-time since we don't know the
1384 * number of queues at compile-time.
1387 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1389 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1390 sizeof(struct e1000_tx_ring
), GFP_KERNEL
);
1391 if (!adapter
->tx_ring
)
1394 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1395 sizeof(struct e1000_rx_ring
), GFP_KERNEL
);
1396 if (!adapter
->rx_ring
) {
1397 kfree(adapter
->tx_ring
);
1401 return E1000_SUCCESS
;
1405 * e1000_open - Called when a network interface is made active
1406 * @netdev: network interface device structure
1408 * Returns 0 on success, negative value on failure
1410 * The open entry point is called when a network interface is made
1411 * active by the system (IFF_UP). At this point all resources needed
1412 * for transmit and receive operations are allocated, the interrupt
1413 * handler is registered with the OS, the watchdog timer is started,
1414 * and the stack is notified that the interface is ready.
1417 static int e1000_open(struct net_device
*netdev
)
1419 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1420 struct e1000_hw
*hw
= &adapter
->hw
;
1423 /* disallow open during test */
1424 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1427 /* allocate transmit descriptors */
1428 err
= e1000_setup_all_tx_resources(adapter
);
1432 /* allocate receive descriptors */
1433 err
= e1000_setup_all_rx_resources(adapter
);
1437 e1000_power_up_phy(adapter
);
1439 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1440 if ((hw
->mng_cookie
.status
&
1441 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1442 e1000_update_mng_vlan(adapter
);
1445 /* If AMT is enabled, let the firmware know that the network
1446 * interface is now open */
1447 if (hw
->mac_type
== e1000_82573
&&
1448 e1000_check_mng_mode(hw
))
1449 e1000_get_hw_control(adapter
);
1451 /* before we allocate an interrupt, we must be ready to handle it.
1452 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1453 * as soon as we call pci_request_irq, so we have to setup our
1454 * clean_rx handler before we do so. */
1455 e1000_configure(adapter
);
1457 err
= e1000_request_irq(adapter
);
1461 /* From here on the code is the same as e1000_up() */
1462 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1464 napi_enable(&adapter
->napi
);
1466 e1000_irq_enable(adapter
);
1468 netif_start_queue(netdev
);
1470 /* fire a link status change interrupt to start the watchdog */
1471 ew32(ICS
, E1000_ICS_LSC
);
1473 return E1000_SUCCESS
;
1476 e1000_release_hw_control(adapter
);
1477 e1000_power_down_phy(adapter
);
1478 e1000_free_all_rx_resources(adapter
);
1480 e1000_free_all_tx_resources(adapter
);
1482 e1000_reset(adapter
);
1488 * e1000_close - Disables a network interface
1489 * @netdev: network interface device structure
1491 * Returns 0, this is not allowed to fail
1493 * The close entry point is called when an interface is de-activated
1494 * by the OS. The hardware is still under the drivers control, but
1495 * needs to be disabled. A global MAC reset is issued to stop the
1496 * hardware, and all transmit and receive resources are freed.
1499 static int e1000_close(struct net_device
*netdev
)
1501 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1502 struct e1000_hw
*hw
= &adapter
->hw
;
1504 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1505 e1000_down(adapter
);
1506 e1000_power_down_phy(adapter
);
1507 e1000_free_irq(adapter
);
1509 e1000_free_all_tx_resources(adapter
);
1510 e1000_free_all_rx_resources(adapter
);
1512 /* kill manageability vlan ID if supported, but not if a vlan with
1513 * the same ID is registered on the host OS (let 8021q kill it) */
1514 if ((hw
->mng_cookie
.status
&
1515 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1517 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1518 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1521 /* If AMT is enabled, let the firmware know that the network
1522 * interface is now closed */
1523 if (hw
->mac_type
== e1000_82573
&&
1524 e1000_check_mng_mode(hw
))
1525 e1000_release_hw_control(adapter
);
1531 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1532 * @adapter: address of board private structure
1533 * @start: address of beginning of memory
1534 * @len: length of memory
1536 static bool e1000_check_64k_bound(struct e1000_adapter
*adapter
, void *start
,
1539 struct e1000_hw
*hw
= &adapter
->hw
;
1540 unsigned long begin
= (unsigned long)start
;
1541 unsigned long end
= begin
+ len
;
1543 /* First rev 82545 and 82546 need to not allow any memory
1544 * write location to cross 64k boundary due to errata 23 */
1545 if (hw
->mac_type
== e1000_82545
||
1546 hw
->mac_type
== e1000_82546
) {
1547 return ((begin
^ (end
- 1)) >> 16) != 0 ? false : true;
1554 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1555 * @adapter: board private structure
1556 * @txdr: tx descriptor ring (for a specific queue) to setup
1558 * Return 0 on success, negative on failure
1561 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1562 struct e1000_tx_ring
*txdr
)
1564 struct pci_dev
*pdev
= adapter
->pdev
;
1567 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1568 txdr
->buffer_info
= vmalloc(size
);
1569 if (!txdr
->buffer_info
) {
1571 "Unable to allocate memory for the transmit descriptor ring\n");
1574 memset(txdr
->buffer_info
, 0, size
);
1576 /* round up to nearest 4K */
1578 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1579 txdr
->size
= ALIGN(txdr
->size
, 4096);
1581 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1584 vfree(txdr
->buffer_info
);
1586 "Unable to allocate memory for the transmit descriptor ring\n");
1590 /* Fix for errata 23, can't cross 64kB boundary */
1591 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1592 void *olddesc
= txdr
->desc
;
1593 dma_addr_t olddma
= txdr
->dma
;
1594 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1595 "at %p\n", txdr
->size
, txdr
->desc
);
1596 /* Try again, without freeing the previous */
1597 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1598 /* Failed allocation, critical failure */
1600 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1601 goto setup_tx_desc_die
;
1604 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1606 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1608 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1610 "Unable to allocate aligned memory "
1611 "for the transmit descriptor ring\n");
1612 vfree(txdr
->buffer_info
);
1615 /* Free old allocation, new allocation was successful */
1616 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1619 memset(txdr
->desc
, 0, txdr
->size
);
1621 txdr
->next_to_use
= 0;
1622 txdr
->next_to_clean
= 0;
1628 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1629 * (Descriptors) for all queues
1630 * @adapter: board private structure
1632 * Return 0 on success, negative on failure
1635 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1639 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1640 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1643 "Allocation for Tx Queue %u failed\n", i
);
1644 for (i
-- ; i
>= 0; i
--)
1645 e1000_free_tx_resources(adapter
,
1646 &adapter
->tx_ring
[i
]);
1655 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1656 * @adapter: board private structure
1658 * Configure the Tx unit of the MAC after a reset.
1661 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1664 struct e1000_hw
*hw
= &adapter
->hw
;
1665 u32 tdlen
, tctl
, tipg
, tarc
;
1668 /* Setup the HW Tx Head and Tail descriptor pointers */
1670 switch (adapter
->num_tx_queues
) {
1673 tdba
= adapter
->tx_ring
[0].dma
;
1674 tdlen
= adapter
->tx_ring
[0].count
*
1675 sizeof(struct e1000_tx_desc
);
1677 ew32(TDBAH
, (tdba
>> 32));
1678 ew32(TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1681 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1682 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1686 /* Set the default values for the Tx Inter Packet Gap timer */
1687 if (hw
->mac_type
<= e1000_82547_rev_2
&&
1688 (hw
->media_type
== e1000_media_type_fiber
||
1689 hw
->media_type
== e1000_media_type_internal_serdes
))
1690 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1692 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1694 switch (hw
->mac_type
) {
1695 case e1000_82542_rev2_0
:
1696 case e1000_82542_rev2_1
:
1697 tipg
= DEFAULT_82542_TIPG_IPGT
;
1698 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1699 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1701 case e1000_80003es2lan
:
1702 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1703 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1706 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1707 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1710 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1711 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1714 /* Set the Tx Interrupt Delay register */
1716 ew32(TIDV
, adapter
->tx_int_delay
);
1717 if (hw
->mac_type
>= e1000_82540
)
1718 ew32(TADV
, adapter
->tx_abs_int_delay
);
1720 /* Program the Transmit Control Register */
1723 tctl
&= ~E1000_TCTL_CT
;
1724 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1725 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1727 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1729 /* set the speed mode bit, we'll clear it if we're not at
1730 * gigabit link later */
1733 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1742 e1000_config_collision_dist(hw
);
1744 /* Setup Transmit Descriptor Settings for eop descriptor */
1745 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1747 /* only set IDE if we are delaying interrupts using the timers */
1748 if (adapter
->tx_int_delay
)
1749 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1751 if (hw
->mac_type
< e1000_82543
)
1752 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1754 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1756 /* Cache if we're 82544 running in PCI-X because we'll
1757 * need this to apply a workaround later in the send path. */
1758 if (hw
->mac_type
== e1000_82544
&&
1759 hw
->bus_type
== e1000_bus_type_pcix
)
1760 adapter
->pcix_82544
= 1;
1767 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1768 * @adapter: board private structure
1769 * @rxdr: rx descriptor ring (for a specific queue) to setup
1771 * Returns 0 on success, negative on failure
1774 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1775 struct e1000_rx_ring
*rxdr
)
1777 struct e1000_hw
*hw
= &adapter
->hw
;
1778 struct pci_dev
*pdev
= adapter
->pdev
;
1781 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1782 rxdr
->buffer_info
= vmalloc(size
);
1783 if (!rxdr
->buffer_info
) {
1785 "Unable to allocate memory for the receive descriptor ring\n");
1788 memset(rxdr
->buffer_info
, 0, size
);
1790 if (hw
->mac_type
<= e1000_82547_rev_2
)
1791 desc_len
= sizeof(struct e1000_rx_desc
);
1793 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1795 /* Round up to nearest 4K */
1797 rxdr
->size
= rxdr
->count
* desc_len
;
1798 rxdr
->size
= ALIGN(rxdr
->size
, 4096);
1800 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1804 "Unable to allocate memory for the receive descriptor ring\n");
1806 vfree(rxdr
->buffer_info
);
1810 /* Fix for errata 23, can't cross 64kB boundary */
1811 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1812 void *olddesc
= rxdr
->desc
;
1813 dma_addr_t olddma
= rxdr
->dma
;
1814 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1815 "at %p\n", rxdr
->size
, rxdr
->desc
);
1816 /* Try again, without freeing the previous */
1817 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1818 /* Failed allocation, critical failure */
1820 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1822 "Unable to allocate memory "
1823 "for the receive descriptor ring\n");
1824 goto setup_rx_desc_die
;
1827 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1829 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1831 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1833 "Unable to allocate aligned memory "
1834 "for the receive descriptor ring\n");
1835 goto setup_rx_desc_die
;
1837 /* Free old allocation, new allocation was successful */
1838 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1841 memset(rxdr
->desc
, 0, rxdr
->size
);
1843 rxdr
->next_to_clean
= 0;
1844 rxdr
->next_to_use
= 0;
1850 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1851 * (Descriptors) for all queues
1852 * @adapter: board private structure
1854 * Return 0 on success, negative on failure
1857 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1861 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1862 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1865 "Allocation for Rx Queue %u failed\n", i
);
1866 for (i
-- ; i
>= 0; i
--)
1867 e1000_free_rx_resources(adapter
,
1868 &adapter
->rx_ring
[i
]);
1877 * e1000_setup_rctl - configure the receive control registers
1878 * @adapter: Board private structure
1880 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1882 struct e1000_hw
*hw
= &adapter
->hw
;
1887 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1889 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1890 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1891 (hw
->mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1893 if (hw
->tbi_compatibility_on
== 1)
1894 rctl
|= E1000_RCTL_SBP
;
1896 rctl
&= ~E1000_RCTL_SBP
;
1898 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1899 rctl
&= ~E1000_RCTL_LPE
;
1901 rctl
|= E1000_RCTL_LPE
;
1903 /* Setup buffer sizes */
1904 rctl
&= ~E1000_RCTL_SZ_4096
;
1905 rctl
|= E1000_RCTL_BSEX
;
1906 switch (adapter
->rx_buffer_len
) {
1907 case E1000_RXBUFFER_256
:
1908 rctl
|= E1000_RCTL_SZ_256
;
1909 rctl
&= ~E1000_RCTL_BSEX
;
1911 case E1000_RXBUFFER_512
:
1912 rctl
|= E1000_RCTL_SZ_512
;
1913 rctl
&= ~E1000_RCTL_BSEX
;
1915 case E1000_RXBUFFER_1024
:
1916 rctl
|= E1000_RCTL_SZ_1024
;
1917 rctl
&= ~E1000_RCTL_BSEX
;
1919 case E1000_RXBUFFER_2048
:
1921 rctl
|= E1000_RCTL_SZ_2048
;
1922 rctl
&= ~E1000_RCTL_BSEX
;
1924 case E1000_RXBUFFER_4096
:
1925 rctl
|= E1000_RCTL_SZ_4096
;
1927 case E1000_RXBUFFER_8192
:
1928 rctl
|= E1000_RCTL_SZ_8192
;
1930 case E1000_RXBUFFER_16384
:
1931 rctl
|= E1000_RCTL_SZ_16384
;
1939 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1940 * @adapter: board private structure
1942 * Configure the Rx unit of the MAC after a reset.
1945 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
1948 struct e1000_hw
*hw
= &adapter
->hw
;
1949 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
1951 rdlen
= adapter
->rx_ring
[0].count
*
1952 sizeof(struct e1000_rx_desc
);
1953 adapter
->clean_rx
= e1000_clean_rx_irq
;
1954 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1956 /* disable receives while setting up the descriptors */
1958 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1960 /* set the Receive Delay Timer Register */
1961 ew32(RDTR
, adapter
->rx_int_delay
);
1963 if (hw
->mac_type
>= e1000_82540
) {
1964 ew32(RADV
, adapter
->rx_abs_int_delay
);
1965 if (adapter
->itr_setting
!= 0)
1966 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
1969 if (hw
->mac_type
>= e1000_82571
) {
1970 ctrl_ext
= er32(CTRL_EXT
);
1971 /* Reset delay timers after every interrupt */
1972 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1973 /* Auto-Mask interrupts upon ICR access */
1974 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1975 ew32(IAM
, 0xffffffff);
1976 ew32(CTRL_EXT
, ctrl_ext
);
1977 E1000_WRITE_FLUSH();
1980 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1981 * the Base and Length of the Rx Descriptor Ring */
1982 switch (adapter
->num_rx_queues
) {
1985 rdba
= adapter
->rx_ring
[0].dma
;
1987 ew32(RDBAH
, (rdba
>> 32));
1988 ew32(RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1991 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
1992 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
1996 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1997 if (hw
->mac_type
>= e1000_82543
) {
1998 rxcsum
= er32(RXCSUM
);
1999 if (adapter
->rx_csum
)
2000 rxcsum
|= E1000_RXCSUM_TUOFL
;
2002 /* don't need to clear IPPCSE as it defaults to 0 */
2003 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2004 ew32(RXCSUM
, rxcsum
);
2007 /* Enable Receives */
2012 * e1000_free_tx_resources - Free Tx Resources per Queue
2013 * @adapter: board private structure
2014 * @tx_ring: Tx descriptor ring for a specific queue
2016 * Free all transmit software resources
2019 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2020 struct e1000_tx_ring
*tx_ring
)
2022 struct pci_dev
*pdev
= adapter
->pdev
;
2024 e1000_clean_tx_ring(adapter
, tx_ring
);
2026 vfree(tx_ring
->buffer_info
);
2027 tx_ring
->buffer_info
= NULL
;
2029 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2031 tx_ring
->desc
= NULL
;
2035 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2036 * @adapter: board private structure
2038 * Free all transmit software resources
2041 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2045 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2046 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2049 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2050 struct e1000_buffer
*buffer_info
)
2052 if (buffer_info
->dma
) {
2053 pci_unmap_page(adapter
->pdev
,
2055 buffer_info
->length
,
2057 buffer_info
->dma
= 0;
2059 if (buffer_info
->skb
) {
2060 dev_kfree_skb_any(buffer_info
->skb
);
2061 buffer_info
->skb
= NULL
;
2063 /* buffer_info must be completely set up in the transmit path */
2067 * e1000_clean_tx_ring - Free Tx Buffers
2068 * @adapter: board private structure
2069 * @tx_ring: ring to be cleaned
2072 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2073 struct e1000_tx_ring
*tx_ring
)
2075 struct e1000_hw
*hw
= &adapter
->hw
;
2076 struct e1000_buffer
*buffer_info
;
2080 /* Free all the Tx ring sk_buffs */
2082 for (i
= 0; i
< tx_ring
->count
; i
++) {
2083 buffer_info
= &tx_ring
->buffer_info
[i
];
2084 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2087 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2088 memset(tx_ring
->buffer_info
, 0, size
);
2090 /* Zero out the descriptor ring */
2092 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2094 tx_ring
->next_to_use
= 0;
2095 tx_ring
->next_to_clean
= 0;
2096 tx_ring
->last_tx_tso
= 0;
2098 writel(0, hw
->hw_addr
+ tx_ring
->tdh
);
2099 writel(0, hw
->hw_addr
+ tx_ring
->tdt
);
2103 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2104 * @adapter: board private structure
2107 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2111 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2112 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2116 * e1000_free_rx_resources - Free Rx Resources
2117 * @adapter: board private structure
2118 * @rx_ring: ring to clean the resources from
2120 * Free all receive software resources
2123 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2124 struct e1000_rx_ring
*rx_ring
)
2126 struct pci_dev
*pdev
= adapter
->pdev
;
2128 e1000_clean_rx_ring(adapter
, rx_ring
);
2130 vfree(rx_ring
->buffer_info
);
2131 rx_ring
->buffer_info
= NULL
;
2133 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2135 rx_ring
->desc
= NULL
;
2139 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2140 * @adapter: board private structure
2142 * Free all receive software resources
2145 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2149 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2150 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2154 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2155 * @adapter: board private structure
2156 * @rx_ring: ring to free buffers from
2159 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2160 struct e1000_rx_ring
*rx_ring
)
2162 struct e1000_hw
*hw
= &adapter
->hw
;
2163 struct e1000_buffer
*buffer_info
;
2164 struct pci_dev
*pdev
= adapter
->pdev
;
2168 /* Free all the Rx ring sk_buffs */
2169 for (i
= 0; i
< rx_ring
->count
; i
++) {
2170 buffer_info
= &rx_ring
->buffer_info
[i
];
2171 if (buffer_info
->skb
) {
2172 pci_unmap_single(pdev
,
2174 buffer_info
->length
,
2175 PCI_DMA_FROMDEVICE
);
2177 dev_kfree_skb(buffer_info
->skb
);
2178 buffer_info
->skb
= NULL
;
2182 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2183 memset(rx_ring
->buffer_info
, 0, size
);
2185 /* Zero out the descriptor ring */
2187 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2189 rx_ring
->next_to_clean
= 0;
2190 rx_ring
->next_to_use
= 0;
2192 writel(0, hw
->hw_addr
+ rx_ring
->rdh
);
2193 writel(0, hw
->hw_addr
+ rx_ring
->rdt
);
2197 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2198 * @adapter: board private structure
2201 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2205 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2206 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2209 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2210 * and memory write and invalidate disabled for certain operations
2212 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2214 struct e1000_hw
*hw
= &adapter
->hw
;
2215 struct net_device
*netdev
= adapter
->netdev
;
2218 e1000_pci_clear_mwi(hw
);
2221 rctl
|= E1000_RCTL_RST
;
2223 E1000_WRITE_FLUSH();
2226 if (netif_running(netdev
))
2227 e1000_clean_all_rx_rings(adapter
);
2230 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2232 struct e1000_hw
*hw
= &adapter
->hw
;
2233 struct net_device
*netdev
= adapter
->netdev
;
2237 rctl
&= ~E1000_RCTL_RST
;
2239 E1000_WRITE_FLUSH();
2242 if (hw
->pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2243 e1000_pci_set_mwi(hw
);
2245 if (netif_running(netdev
)) {
2246 /* No need to loop, because 82542 supports only 1 queue */
2247 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2248 e1000_configure_rx(adapter
);
2249 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2254 * e1000_set_mac - Change the Ethernet Address of the NIC
2255 * @netdev: network interface device structure
2256 * @p: pointer to an address structure
2258 * Returns 0 on success, negative on failure
2261 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2263 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2264 struct e1000_hw
*hw
= &adapter
->hw
;
2265 struct sockaddr
*addr
= p
;
2267 if (!is_valid_ether_addr(addr
->sa_data
))
2268 return -EADDRNOTAVAIL
;
2270 /* 82542 2.0 needs to be in reset to write receive address registers */
2272 if (hw
->mac_type
== e1000_82542_rev2_0
)
2273 e1000_enter_82542_rst(adapter
);
2275 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2276 memcpy(hw
->mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2278 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2280 /* With 82571 controllers, LAA may be overwritten (with the default)
2281 * due to controller reset from the other port. */
2282 if (hw
->mac_type
== e1000_82571
) {
2283 /* activate the work around */
2284 hw
->laa_is_present
= 1;
2286 /* Hold a copy of the LAA in RAR[14] This is done so that
2287 * between the time RAR[0] gets clobbered and the time it
2288 * gets fixed (in e1000_watchdog), the actual LAA is in one
2289 * of the RARs and no incoming packets directed to this port
2290 * are dropped. Eventaully the LAA will be in RAR[0] and
2292 e1000_rar_set(hw
, hw
->mac_addr
,
2293 E1000_RAR_ENTRIES
- 1);
2296 if (hw
->mac_type
== e1000_82542_rev2_0
)
2297 e1000_leave_82542_rst(adapter
);
2303 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2304 * @netdev: network interface device structure
2306 * The set_rx_mode entry point is called whenever the unicast or multicast
2307 * address lists or the network interface flags are updated. This routine is
2308 * responsible for configuring the hardware for proper unicast, multicast,
2309 * promiscuous mode, and all-multi behavior.
2312 static void e1000_set_rx_mode(struct net_device
*netdev
)
2314 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2315 struct e1000_hw
*hw
= &adapter
->hw
;
2316 struct dev_addr_list
*uc_ptr
;
2317 struct dev_addr_list
*mc_ptr
;
2320 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2321 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2322 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2323 E1000_NUM_MTA_REGISTERS
;
2325 if (hw
->mac_type
== e1000_ich8lan
)
2326 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2328 /* reserve RAR[14] for LAA over-write work-around */
2329 if (hw
->mac_type
== e1000_82571
)
2332 /* Check for Promiscuous and All Multicast modes */
2336 if (netdev
->flags
& IFF_PROMISC
) {
2337 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2338 rctl
&= ~E1000_RCTL_VFE
;
2340 if (netdev
->flags
& IFF_ALLMULTI
) {
2341 rctl
|= E1000_RCTL_MPE
;
2343 rctl
&= ~E1000_RCTL_MPE
;
2345 if (adapter
->hw
.mac_type
!= e1000_ich8lan
)
2346 rctl
|= E1000_RCTL_VFE
;
2350 if (netdev
->uc_count
> rar_entries
- 1) {
2351 rctl
|= E1000_RCTL_UPE
;
2352 } else if (!(netdev
->flags
& IFF_PROMISC
)) {
2353 rctl
&= ~E1000_RCTL_UPE
;
2354 uc_ptr
= netdev
->uc_list
;
2359 /* 82542 2.0 needs to be in reset to write receive address registers */
2361 if (hw
->mac_type
== e1000_82542_rev2_0
)
2362 e1000_enter_82542_rst(adapter
);
2364 /* load the first 14 addresses into the exact filters 1-14. Unicast
2365 * addresses take precedence to avoid disabling unicast filtering
2368 * RAR 0 is used for the station MAC adddress
2369 * if there are not 14 addresses, go ahead and clear the filters
2370 * -- with 82571 controllers only 0-13 entries are filled here
2372 mc_ptr
= netdev
->mc_list
;
2374 for (i
= 1; i
< rar_entries
; i
++) {
2376 e1000_rar_set(hw
, uc_ptr
->da_addr
, i
);
2377 uc_ptr
= uc_ptr
->next
;
2378 } else if (mc_ptr
) {
2379 e1000_rar_set(hw
, mc_ptr
->da_addr
, i
);
2380 mc_ptr
= mc_ptr
->next
;
2382 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2383 E1000_WRITE_FLUSH();
2384 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2385 E1000_WRITE_FLUSH();
2388 WARN_ON(uc_ptr
!= NULL
);
2390 /* clear the old settings from the multicast hash table */
2392 for (i
= 0; i
< mta_reg_count
; i
++) {
2393 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2394 E1000_WRITE_FLUSH();
2397 /* load any remaining addresses into the hash table */
2399 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2400 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->da_addr
);
2401 e1000_mta_set(hw
, hash_value
);
2404 if (hw
->mac_type
== e1000_82542_rev2_0
)
2405 e1000_leave_82542_rst(adapter
);
2408 /* Need to wait a few seconds after link up to get diagnostic information from
2411 static void e1000_update_phy_info(unsigned long data
)
2413 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2414 struct e1000_hw
*hw
= &adapter
->hw
;
2415 e1000_phy_get_info(hw
, &adapter
->phy_info
);
2419 * e1000_82547_tx_fifo_stall - Timer Call-back
2420 * @data: pointer to adapter cast into an unsigned long
2423 static void e1000_82547_tx_fifo_stall(unsigned long data
)
2425 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2426 struct e1000_hw
*hw
= &adapter
->hw
;
2427 struct net_device
*netdev
= adapter
->netdev
;
2430 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2431 if ((er32(TDT
) == er32(TDH
)) &&
2432 (er32(TDFT
) == er32(TDFH
)) &&
2433 (er32(TDFTS
) == er32(TDFHS
))) {
2435 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
2436 ew32(TDFT
, adapter
->tx_head_addr
);
2437 ew32(TDFH
, adapter
->tx_head_addr
);
2438 ew32(TDFTS
, adapter
->tx_head_addr
);
2439 ew32(TDFHS
, adapter
->tx_head_addr
);
2441 E1000_WRITE_FLUSH();
2443 adapter
->tx_fifo_head
= 0;
2444 atomic_set(&adapter
->tx_fifo_stall
, 0);
2445 netif_wake_queue(netdev
);
2447 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2453 * e1000_watchdog - Timer Call-back
2454 * @data: pointer to adapter cast into an unsigned long
2456 static void e1000_watchdog(unsigned long data
)
2458 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2459 struct e1000_hw
*hw
= &adapter
->hw
;
2460 struct net_device
*netdev
= adapter
->netdev
;
2461 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2465 ret_val
= e1000_check_for_link(hw
);
2466 if ((ret_val
== E1000_ERR_PHY
) &&
2467 (hw
->phy_type
== e1000_phy_igp_3
) &&
2468 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2469 /* See e1000_kumeran_lock_loss_workaround() */
2471 "Gigabit has been disabled, downgrading speed\n");
2474 if (hw
->mac_type
== e1000_82573
) {
2475 e1000_enable_tx_pkt_filtering(hw
);
2476 if (adapter
->mng_vlan_id
!= hw
->mng_cookie
.vlan_id
)
2477 e1000_update_mng_vlan(adapter
);
2480 if ((hw
->media_type
== e1000_media_type_internal_serdes
) &&
2481 !(er32(TXCW
) & E1000_TXCW_ANE
))
2482 link
= !hw
->serdes_link_down
;
2484 link
= er32(STATUS
) & E1000_STATUS_LU
;
2487 if (!netif_carrier_ok(netdev
)) {
2490 e1000_get_speed_and_duplex(hw
,
2491 &adapter
->link_speed
,
2492 &adapter
->link_duplex
);
2495 printk(KERN_INFO
"e1000: %s NIC Link is Up %d Mbps %s, "
2496 "Flow Control: %s\n",
2498 adapter
->link_speed
,
2499 adapter
->link_duplex
== FULL_DUPLEX
?
2500 "Full Duplex" : "Half Duplex",
2501 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2502 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2503 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2504 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2506 /* tweak tx_queue_len according to speed/duplex
2507 * and adjust the timeout factor */
2508 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2509 adapter
->tx_timeout_factor
= 1;
2510 switch (adapter
->link_speed
) {
2513 netdev
->tx_queue_len
= 10;
2514 adapter
->tx_timeout_factor
= 8;
2518 netdev
->tx_queue_len
= 100;
2519 /* maybe add some timeout factor ? */
2523 if ((hw
->mac_type
== e1000_82571
||
2524 hw
->mac_type
== e1000_82572
) &&
2527 tarc0
= er32(TARC0
);
2528 tarc0
&= ~(1 << 21);
2532 /* disable TSO for pcie and 10/100 speeds, to avoid
2533 * some hardware issues */
2534 if (!adapter
->tso_force
&&
2535 hw
->bus_type
== e1000_bus_type_pci_express
){
2536 switch (adapter
->link_speed
) {
2540 "10/100 speed: disabling TSO\n");
2541 netdev
->features
&= ~NETIF_F_TSO
;
2542 netdev
->features
&= ~NETIF_F_TSO6
;
2545 netdev
->features
|= NETIF_F_TSO
;
2546 netdev
->features
|= NETIF_F_TSO6
;
2554 /* enable transmits in the hardware, need to do this
2555 * after setting TARC0 */
2557 tctl
|= E1000_TCTL_EN
;
2560 netif_carrier_on(netdev
);
2561 netif_wake_queue(netdev
);
2562 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2563 adapter
->smartspeed
= 0;
2565 /* make sure the receive unit is started */
2566 if (hw
->rx_needs_kicking
) {
2567 u32 rctl
= er32(RCTL
);
2568 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
2572 if (netif_carrier_ok(netdev
)) {
2573 adapter
->link_speed
= 0;
2574 adapter
->link_duplex
= 0;
2575 printk(KERN_INFO
"e1000: %s NIC Link is Down\n",
2577 netif_carrier_off(netdev
);
2578 netif_stop_queue(netdev
);
2579 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2581 /* 80003ES2LAN workaround--
2582 * For packet buffer work-around on link down event;
2583 * disable receives in the ISR and
2584 * reset device here in the watchdog
2586 if (hw
->mac_type
== e1000_80003es2lan
)
2588 schedule_work(&adapter
->reset_task
);
2591 e1000_smartspeed(adapter
);
2594 e1000_update_stats(adapter
);
2596 hw
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2597 adapter
->tpt_old
= adapter
->stats
.tpt
;
2598 hw
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2599 adapter
->colc_old
= adapter
->stats
.colc
;
2601 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2602 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2603 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2604 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2606 e1000_update_adaptive(hw
);
2608 if (!netif_carrier_ok(netdev
)) {
2609 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2610 /* We've lost link, so the controller stops DMA,
2611 * but we've got queued Tx work that's never going
2612 * to get done, so reset controller to flush Tx.
2613 * (Do the reset outside of interrupt context). */
2614 adapter
->tx_timeout_count
++;
2615 schedule_work(&adapter
->reset_task
);
2619 /* Cause software interrupt to ensure rx ring is cleaned */
2620 ew32(ICS
, E1000_ICS_RXDMT0
);
2622 /* Force detection of hung controller every watchdog period */
2623 adapter
->detect_tx_hung
= true;
2625 /* With 82571 controllers, LAA may be overwritten due to controller
2626 * reset from the other port. Set the appropriate LAA in RAR[0] */
2627 if (hw
->mac_type
== e1000_82571
&& hw
->laa_is_present
)
2628 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2630 /* Reset the timer */
2631 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2634 enum latency_range
{
2638 latency_invalid
= 255
2642 * e1000_update_itr - update the dynamic ITR value based on statistics
2643 * Stores a new ITR value based on packets and byte
2644 * counts during the last interrupt. The advantage of per interrupt
2645 * computation is faster updates and more accurate ITR for the current
2646 * traffic pattern. Constants in this function were computed
2647 * based on theoretical maximum wire speed and thresholds were set based
2648 * on testing data as well as attempting to minimize response time
2649 * while increasing bulk throughput.
2650 * this functionality is controlled by the InterruptThrottleRate module
2651 * parameter (see e1000_param.c)
2652 * @adapter: pointer to adapter
2653 * @itr_setting: current adapter->itr
2654 * @packets: the number of packets during this measurement interval
2655 * @bytes: the number of bytes during this measurement interval
2657 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2658 u16 itr_setting
, int packets
, int bytes
)
2660 unsigned int retval
= itr_setting
;
2661 struct e1000_hw
*hw
= &adapter
->hw
;
2663 if (unlikely(hw
->mac_type
< e1000_82540
))
2664 goto update_itr_done
;
2667 goto update_itr_done
;
2669 switch (itr_setting
) {
2670 case lowest_latency
:
2671 /* jumbo frames get bulk treatment*/
2672 if (bytes
/packets
> 8000)
2673 retval
= bulk_latency
;
2674 else if ((packets
< 5) && (bytes
> 512))
2675 retval
= low_latency
;
2677 case low_latency
: /* 50 usec aka 20000 ints/s */
2678 if (bytes
> 10000) {
2679 /* jumbo frames need bulk latency setting */
2680 if (bytes
/packets
> 8000)
2681 retval
= bulk_latency
;
2682 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2683 retval
= bulk_latency
;
2684 else if ((packets
> 35))
2685 retval
= lowest_latency
;
2686 } else if (bytes
/packets
> 2000)
2687 retval
= bulk_latency
;
2688 else if (packets
<= 2 && bytes
< 512)
2689 retval
= lowest_latency
;
2691 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2692 if (bytes
> 25000) {
2694 retval
= low_latency
;
2695 } else if (bytes
< 6000) {
2696 retval
= low_latency
;
2705 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2707 struct e1000_hw
*hw
= &adapter
->hw
;
2709 u32 new_itr
= adapter
->itr
;
2711 if (unlikely(hw
->mac_type
< e1000_82540
))
2714 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2715 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2721 adapter
->tx_itr
= e1000_update_itr(adapter
,
2723 adapter
->total_tx_packets
,
2724 adapter
->total_tx_bytes
);
2725 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2726 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2727 adapter
->tx_itr
= low_latency
;
2729 adapter
->rx_itr
= e1000_update_itr(adapter
,
2731 adapter
->total_rx_packets
,
2732 adapter
->total_rx_bytes
);
2733 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2734 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2735 adapter
->rx_itr
= low_latency
;
2737 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2739 switch (current_itr
) {
2740 /* counts and packets in update_itr are dependent on these numbers */
2741 case lowest_latency
:
2745 new_itr
= 20000; /* aka hwitr = ~200 */
2755 if (new_itr
!= adapter
->itr
) {
2756 /* this attempts to bias the interrupt rate towards Bulk
2757 * by adding intermediate steps when interrupt rate is
2759 new_itr
= new_itr
> adapter
->itr
?
2760 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2762 adapter
->itr
= new_itr
;
2763 ew32(ITR
, 1000000000 / (new_itr
* 256));
2769 #define E1000_TX_FLAGS_CSUM 0x00000001
2770 #define E1000_TX_FLAGS_VLAN 0x00000002
2771 #define E1000_TX_FLAGS_TSO 0x00000004
2772 #define E1000_TX_FLAGS_IPV4 0x00000008
2773 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2774 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2776 static int e1000_tso(struct e1000_adapter
*adapter
,
2777 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2779 struct e1000_context_desc
*context_desc
;
2780 struct e1000_buffer
*buffer_info
;
2783 u16 ipcse
= 0, tucse
, mss
;
2784 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2787 if (skb_is_gso(skb
)) {
2788 if (skb_header_cloned(skb
)) {
2789 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2794 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2795 mss
= skb_shinfo(skb
)->gso_size
;
2796 if (skb
->protocol
== htons(ETH_P_IP
)) {
2797 struct iphdr
*iph
= ip_hdr(skb
);
2800 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2804 cmd_length
= E1000_TXD_CMD_IP
;
2805 ipcse
= skb_transport_offset(skb
) - 1;
2806 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2807 ipv6_hdr(skb
)->payload_len
= 0;
2808 tcp_hdr(skb
)->check
=
2809 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2810 &ipv6_hdr(skb
)->daddr
,
2814 ipcss
= skb_network_offset(skb
);
2815 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
2816 tucss
= skb_transport_offset(skb
);
2817 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
2820 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2821 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2823 i
= tx_ring
->next_to_use
;
2824 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2825 buffer_info
= &tx_ring
->buffer_info
[i
];
2827 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2828 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2829 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2830 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2831 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2832 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2833 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2834 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2835 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2837 buffer_info
->time_stamp
= jiffies
;
2838 buffer_info
->next_to_watch
= i
;
2840 if (++i
== tx_ring
->count
) i
= 0;
2841 tx_ring
->next_to_use
= i
;
2848 static bool e1000_tx_csum(struct e1000_adapter
*adapter
,
2849 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2851 struct e1000_context_desc
*context_desc
;
2852 struct e1000_buffer
*buffer_info
;
2855 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
2857 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2860 switch (skb
->protocol
) {
2861 case cpu_to_be16(ETH_P_IP
):
2862 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2863 cmd_len
|= E1000_TXD_CMD_TCP
;
2865 case cpu_to_be16(ETH_P_IPV6
):
2866 /* XXX not handling all IPV6 headers */
2867 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2868 cmd_len
|= E1000_TXD_CMD_TCP
;
2871 if (unlikely(net_ratelimit()))
2872 DPRINTK(DRV
, WARNING
,
2873 "checksum_partial proto=%x!\n", skb
->protocol
);
2877 css
= skb_transport_offset(skb
);
2879 i
= tx_ring
->next_to_use
;
2880 buffer_info
= &tx_ring
->buffer_info
[i
];
2881 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2883 context_desc
->lower_setup
.ip_config
= 0;
2884 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2885 context_desc
->upper_setup
.tcp_fields
.tucso
=
2886 css
+ skb
->csum_offset
;
2887 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2888 context_desc
->tcp_seg_setup
.data
= 0;
2889 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
2891 buffer_info
->time_stamp
= jiffies
;
2892 buffer_info
->next_to_watch
= i
;
2894 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2895 tx_ring
->next_to_use
= i
;
2900 #define E1000_MAX_TXD_PWR 12
2901 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2903 static int e1000_tx_map(struct e1000_adapter
*adapter
,
2904 struct e1000_tx_ring
*tx_ring
,
2905 struct sk_buff
*skb
, unsigned int first
,
2906 unsigned int max_per_txd
, unsigned int nr_frags
,
2909 struct e1000_hw
*hw
= &adapter
->hw
;
2910 struct e1000_buffer
*buffer_info
;
2911 unsigned int len
= skb
->len
;
2912 unsigned int offset
= 0, size
, count
= 0, i
;
2914 len
-= skb
->data_len
;
2916 i
= tx_ring
->next_to_use
;
2919 buffer_info
= &tx_ring
->buffer_info
[i
];
2920 size
= min(len
, max_per_txd
);
2921 /* Workaround for Controller erratum --
2922 * descriptor for non-tso packet in a linear SKB that follows a
2923 * tso gets written back prematurely before the data is fully
2924 * DMA'd to the controller */
2925 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2927 tx_ring
->last_tx_tso
= 0;
2931 /* Workaround for premature desc write-backs
2932 * in TSO mode. Append 4-byte sentinel desc */
2933 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2935 /* work-around for errata 10 and it applies
2936 * to all controllers in PCI-X mode
2937 * The fix is to make sure that the first descriptor of a
2938 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2940 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
2941 (size
> 2015) && count
== 0))
2944 /* Workaround for potential 82544 hang in PCI-X. Avoid
2945 * terminating buffers within evenly-aligned dwords. */
2946 if (unlikely(adapter
->pcix_82544
&&
2947 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2951 buffer_info
->length
= size
;
2953 pci_map_single(adapter
->pdev
,
2957 buffer_info
->time_stamp
= jiffies
;
2958 buffer_info
->next_to_watch
= i
;
2963 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2966 for (f
= 0; f
< nr_frags
; f
++) {
2967 struct skb_frag_struct
*frag
;
2969 frag
= &skb_shinfo(skb
)->frags
[f
];
2971 offset
= frag
->page_offset
;
2974 buffer_info
= &tx_ring
->buffer_info
[i
];
2975 size
= min(len
, max_per_txd
);
2976 /* Workaround for premature desc write-backs
2977 * in TSO mode. Append 4-byte sentinel desc */
2978 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2980 /* Workaround for potential 82544 hang in PCI-X.
2981 * Avoid terminating buffers within evenly-aligned
2983 if (unlikely(adapter
->pcix_82544
&&
2984 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2988 buffer_info
->length
= size
;
2990 pci_map_page(adapter
->pdev
,
2995 buffer_info
->time_stamp
= jiffies
;
2996 buffer_info
->next_to_watch
= i
;
3001 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3005 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
3006 tx_ring
->buffer_info
[i
].skb
= skb
;
3007 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3012 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3013 struct e1000_tx_ring
*tx_ring
, int tx_flags
,
3016 struct e1000_hw
*hw
= &adapter
->hw
;
3017 struct e1000_tx_desc
*tx_desc
= NULL
;
3018 struct e1000_buffer
*buffer_info
;
3019 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3022 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3023 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3025 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3027 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3028 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3031 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3032 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3033 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3036 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3037 txd_lower
|= E1000_TXD_CMD_VLE
;
3038 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3041 i
= tx_ring
->next_to_use
;
3044 buffer_info
= &tx_ring
->buffer_info
[i
];
3045 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3046 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3047 tx_desc
->lower
.data
=
3048 cpu_to_le32(txd_lower
| buffer_info
->length
);
3049 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3050 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3053 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3055 /* Force memory writes to complete before letting h/w
3056 * know there are new descriptors to fetch. (Only
3057 * applicable for weak-ordered memory model archs,
3058 * such as IA-64). */
3061 tx_ring
->next_to_use
= i
;
3062 writel(i
, hw
->hw_addr
+ tx_ring
->tdt
);
3063 /* we need this if more than one processor can write to our tail
3064 * at a time, it syncronizes IO on IA64/Altix systems */
3069 * 82547 workaround to avoid controller hang in half-duplex environment.
3070 * The workaround is to avoid queuing a large packet that would span
3071 * the internal Tx FIFO ring boundary by notifying the stack to resend
3072 * the packet at a later time. This gives the Tx FIFO an opportunity to
3073 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3074 * to the beginning of the Tx FIFO.
3077 #define E1000_FIFO_HDR 0x10
3078 #define E1000_82547_PAD_LEN 0x3E0
3080 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
3081 struct sk_buff
*skb
)
3083 u32 fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3084 u32 skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3086 skb_fifo_len
= ALIGN(skb_fifo_len
, E1000_FIFO_HDR
);
3088 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3089 goto no_fifo_stall_required
;
3091 if (atomic_read(&adapter
->tx_fifo_stall
))
3094 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3095 atomic_set(&adapter
->tx_fifo_stall
, 1);
3099 no_fifo_stall_required
:
3100 adapter
->tx_fifo_head
+= skb_fifo_len
;
3101 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3102 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3106 #define MINIMUM_DHCP_PACKET_SIZE 282
3107 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3108 struct sk_buff
*skb
)
3110 struct e1000_hw
*hw
= &adapter
->hw
;
3112 if (vlan_tx_tag_present(skb
)) {
3113 if (!((vlan_tx_tag_get(skb
) == hw
->mng_cookie
.vlan_id
) &&
3114 ( hw
->mng_cookie
.status
&
3115 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3118 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3119 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
3120 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3121 const struct iphdr
*ip
=
3122 (struct iphdr
*)((u8
*)skb
->data
+14);
3123 if (IPPROTO_UDP
== ip
->protocol
) {
3124 struct udphdr
*udp
=
3125 (struct udphdr
*)((u8
*)ip
+
3127 if (ntohs(udp
->dest
) == 67) {
3128 offset
= (u8
*)udp
+ 8 - skb
->data
;
3129 length
= skb
->len
- offset
;
3131 return e1000_mng_write_dhcp_info(hw
,
3141 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3143 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3144 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3146 netif_stop_queue(netdev
);
3147 /* Herbert's original patch had:
3148 * smp_mb__after_netif_stop_queue();
3149 * but since that doesn't exist yet, just open code it. */
3152 /* We need to check again in a case another CPU has just
3153 * made room available. */
3154 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3158 netif_start_queue(netdev
);
3159 ++adapter
->restart_queue
;
3163 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3164 struct e1000_tx_ring
*tx_ring
, int size
)
3166 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3168 return __e1000_maybe_stop_tx(netdev
, size
);
3171 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3172 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3174 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3175 struct e1000_hw
*hw
= &adapter
->hw
;
3176 struct e1000_tx_ring
*tx_ring
;
3177 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3178 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3179 unsigned int tx_flags
= 0;
3180 unsigned int len
= skb
->len
- skb
->data_len
;
3181 unsigned int nr_frags
;
3187 /* This goes back to the question of how to logically map a tx queue
3188 * to a flow. Right now, performance is impacted slightly negatively
3189 * if using multiple tx queues. If the stack breaks away from a
3190 * single qdisc implementation, we can look at this again. */
3191 tx_ring
= adapter
->tx_ring
;
3193 if (unlikely(skb
->len
<= 0)) {
3194 dev_kfree_skb_any(skb
);
3195 return NETDEV_TX_OK
;
3198 /* 82571 and newer doesn't need the workaround that limited descriptor
3200 if (hw
->mac_type
>= e1000_82571
)
3203 mss
= skb_shinfo(skb
)->gso_size
;
3204 /* The controller does a simple calculation to
3205 * make sure there is enough room in the FIFO before
3206 * initiating the DMA for each buffer. The calc is:
3207 * 4 = ceil(buffer len/mss). To make sure we don't
3208 * overrun the FIFO, adjust the max buffer len if mss
3212 max_per_txd
= min(mss
<< 2, max_per_txd
);
3213 max_txd_pwr
= fls(max_per_txd
) - 1;
3215 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3216 * points to just header, pull a few bytes of payload from
3217 * frags into skb->data */
3218 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3219 if (skb
->data_len
&& hdr_len
== len
) {
3220 switch (hw
->mac_type
) {
3221 unsigned int pull_size
;
3223 /* Make sure we have room to chop off 4 bytes,
3224 * and that the end alignment will work out to
3225 * this hardware's requirements
3226 * NOTE: this is a TSO only workaround
3227 * if end byte alignment not correct move us
3228 * into the next dword */
3229 if ((unsigned long)(skb_tail_pointer(skb
) - 1) & 4)
3236 pull_size
= min((unsigned int)4, skb
->data_len
);
3237 if (!__pskb_pull_tail(skb
, pull_size
)) {
3239 "__pskb_pull_tail failed.\n");
3240 dev_kfree_skb_any(skb
);
3241 return NETDEV_TX_OK
;
3243 len
= skb
->len
- skb
->data_len
;
3252 /* reserve a descriptor for the offload context */
3253 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3257 /* Controller Erratum workaround */
3258 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3261 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3263 if (adapter
->pcix_82544
)
3266 /* work-around for errata 10 and it applies to all controllers
3267 * in PCI-X mode, so add one more descriptor to the count
3269 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
3273 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3274 for (f
= 0; f
< nr_frags
; f
++)
3275 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3277 if (adapter
->pcix_82544
)
3281 if (hw
->tx_pkt_filtering
&&
3282 (hw
->mac_type
== e1000_82573
))
3283 e1000_transfer_dhcp_info(adapter
, skb
);
3285 /* need: count + 2 desc gap to keep tail from touching
3286 * head, otherwise try next time */
3287 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2)))
3288 return NETDEV_TX_BUSY
;
3290 if (unlikely(hw
->mac_type
== e1000_82547
)) {
3291 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3292 netif_stop_queue(netdev
);
3293 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3294 return NETDEV_TX_BUSY
;
3298 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3299 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3300 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3303 first
= tx_ring
->next_to_use
;
3305 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3307 dev_kfree_skb_any(skb
);
3308 return NETDEV_TX_OK
;
3312 tx_ring
->last_tx_tso
= 1;
3313 tx_flags
|= E1000_TX_FLAGS_TSO
;
3314 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3315 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3317 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3318 * 82571 hardware supports TSO capabilities for IPv6 as well...
3319 * no longer assume, we must. */
3320 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3321 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3323 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3324 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3325 max_per_txd
, nr_frags
, mss
));
3327 netdev
->trans_start
= jiffies
;
3329 /* Make sure there is space in the ring for the next send. */
3330 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3332 return NETDEV_TX_OK
;
3336 * e1000_tx_timeout - Respond to a Tx Hang
3337 * @netdev: network interface device structure
3340 static void e1000_tx_timeout(struct net_device
*netdev
)
3342 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3344 /* Do the reset outside of interrupt context */
3345 adapter
->tx_timeout_count
++;
3346 schedule_work(&adapter
->reset_task
);
3349 static void e1000_reset_task(struct work_struct
*work
)
3351 struct e1000_adapter
*adapter
=
3352 container_of(work
, struct e1000_adapter
, reset_task
);
3354 e1000_reinit_locked(adapter
);
3358 * e1000_get_stats - Get System Network Statistics
3359 * @netdev: network interface device structure
3361 * Returns the address of the device statistics structure.
3362 * The statistics are actually updated from the timer callback.
3365 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3367 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3369 /* only return the current stats */
3370 return &adapter
->net_stats
;
3374 * e1000_change_mtu - Change the Maximum Transfer Unit
3375 * @netdev: network interface device structure
3376 * @new_mtu: new value for maximum frame size
3378 * Returns 0 on success, negative on failure
3381 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3383 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3384 struct e1000_hw
*hw
= &adapter
->hw
;
3385 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3386 u16 eeprom_data
= 0;
3388 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3389 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3390 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3394 /* Adapter-specific max frame size limits. */
3395 switch (hw
->mac_type
) {
3396 case e1000_undefined
... e1000_82542_rev2_1
:
3398 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3399 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3404 /* Jumbo Frames not supported if:
3405 * - this is not an 82573L device
3406 * - ASPM is enabled in any way (0x1A bits 3:2) */
3407 e1000_read_eeprom(hw
, EEPROM_INIT_3GIO_3
, 1,
3409 if ((hw
->device_id
!= E1000_DEV_ID_82573L
) ||
3410 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3411 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3413 "Jumbo Frames not supported.\n");
3418 /* ERT will be enabled later to enable wire speed receives */
3420 /* fall through to get support */
3423 case e1000_80003es2lan
:
3424 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3425 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3426 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3431 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3435 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3436 * means we reserve 2 more, this pushes us to allocate from the next
3438 * i.e. RXBUFFER_2048 --> size-4096 slab */
3440 if (max_frame
<= E1000_RXBUFFER_256
)
3441 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3442 else if (max_frame
<= E1000_RXBUFFER_512
)
3443 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3444 else if (max_frame
<= E1000_RXBUFFER_1024
)
3445 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3446 else if (max_frame
<= E1000_RXBUFFER_2048
)
3447 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3448 else if (max_frame
<= E1000_RXBUFFER_4096
)
3449 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3450 else if (max_frame
<= E1000_RXBUFFER_8192
)
3451 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3452 else if (max_frame
<= E1000_RXBUFFER_16384
)
3453 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3455 /* adjust allocation if LPE protects us, and we aren't using SBP */
3456 if (!hw
->tbi_compatibility_on
&&
3457 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3458 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3459 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3461 netdev
->mtu
= new_mtu
;
3462 hw
->max_frame_size
= max_frame
;
3464 if (netif_running(netdev
))
3465 e1000_reinit_locked(adapter
);
3471 * e1000_update_stats - Update the board statistics counters
3472 * @adapter: board private structure
3475 void e1000_update_stats(struct e1000_adapter
*adapter
)
3477 struct e1000_hw
*hw
= &adapter
->hw
;
3478 struct pci_dev
*pdev
= adapter
->pdev
;
3479 unsigned long flags
;
3482 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3485 * Prevent stats update while adapter is being reset, or if the pci
3486 * connection is down.
3488 if (adapter
->link_speed
== 0)
3490 if (pci_channel_offline(pdev
))
3493 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3495 /* these counters are modified from e1000_tbi_adjust_stats,
3496 * called from the interrupt context, so they must only
3497 * be written while holding adapter->stats_lock
3500 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3501 adapter
->stats
.gprc
+= er32(GPRC
);
3502 adapter
->stats
.gorcl
+= er32(GORCL
);
3503 adapter
->stats
.gorch
+= er32(GORCH
);
3504 adapter
->stats
.bprc
+= er32(BPRC
);
3505 adapter
->stats
.mprc
+= er32(MPRC
);
3506 adapter
->stats
.roc
+= er32(ROC
);
3508 if (hw
->mac_type
!= e1000_ich8lan
) {
3509 adapter
->stats
.prc64
+= er32(PRC64
);
3510 adapter
->stats
.prc127
+= er32(PRC127
);
3511 adapter
->stats
.prc255
+= er32(PRC255
);
3512 adapter
->stats
.prc511
+= er32(PRC511
);
3513 adapter
->stats
.prc1023
+= er32(PRC1023
);
3514 adapter
->stats
.prc1522
+= er32(PRC1522
);
3517 adapter
->stats
.symerrs
+= er32(SYMERRS
);
3518 adapter
->stats
.mpc
+= er32(MPC
);
3519 adapter
->stats
.scc
+= er32(SCC
);
3520 adapter
->stats
.ecol
+= er32(ECOL
);
3521 adapter
->stats
.mcc
+= er32(MCC
);
3522 adapter
->stats
.latecol
+= er32(LATECOL
);
3523 adapter
->stats
.dc
+= er32(DC
);
3524 adapter
->stats
.sec
+= er32(SEC
);
3525 adapter
->stats
.rlec
+= er32(RLEC
);
3526 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3527 adapter
->stats
.xontxc
+= er32(XONTXC
);
3528 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3529 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3530 adapter
->stats
.fcruc
+= er32(FCRUC
);
3531 adapter
->stats
.gptc
+= er32(GPTC
);
3532 adapter
->stats
.gotcl
+= er32(GOTCL
);
3533 adapter
->stats
.gotch
+= er32(GOTCH
);
3534 adapter
->stats
.rnbc
+= er32(RNBC
);
3535 adapter
->stats
.ruc
+= er32(RUC
);
3536 adapter
->stats
.rfc
+= er32(RFC
);
3537 adapter
->stats
.rjc
+= er32(RJC
);
3538 adapter
->stats
.torl
+= er32(TORL
);
3539 adapter
->stats
.torh
+= er32(TORH
);
3540 adapter
->stats
.totl
+= er32(TOTL
);
3541 adapter
->stats
.toth
+= er32(TOTH
);
3542 adapter
->stats
.tpr
+= er32(TPR
);
3544 if (hw
->mac_type
!= e1000_ich8lan
) {
3545 adapter
->stats
.ptc64
+= er32(PTC64
);
3546 adapter
->stats
.ptc127
+= er32(PTC127
);
3547 adapter
->stats
.ptc255
+= er32(PTC255
);
3548 adapter
->stats
.ptc511
+= er32(PTC511
);
3549 adapter
->stats
.ptc1023
+= er32(PTC1023
);
3550 adapter
->stats
.ptc1522
+= er32(PTC1522
);
3553 adapter
->stats
.mptc
+= er32(MPTC
);
3554 adapter
->stats
.bptc
+= er32(BPTC
);
3556 /* used for adaptive IFS */
3558 hw
->tx_packet_delta
= er32(TPT
);
3559 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3560 hw
->collision_delta
= er32(COLC
);
3561 adapter
->stats
.colc
+= hw
->collision_delta
;
3563 if (hw
->mac_type
>= e1000_82543
) {
3564 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3565 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3566 adapter
->stats
.tncrs
+= er32(TNCRS
);
3567 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3568 adapter
->stats
.tsctc
+= er32(TSCTC
);
3569 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3571 if (hw
->mac_type
> e1000_82547_rev_2
) {
3572 adapter
->stats
.iac
+= er32(IAC
);
3573 adapter
->stats
.icrxoc
+= er32(ICRXOC
);
3575 if (hw
->mac_type
!= e1000_ich8lan
) {
3576 adapter
->stats
.icrxptc
+= er32(ICRXPTC
);
3577 adapter
->stats
.icrxatc
+= er32(ICRXATC
);
3578 adapter
->stats
.ictxptc
+= er32(ICTXPTC
);
3579 adapter
->stats
.ictxatc
+= er32(ICTXATC
);
3580 adapter
->stats
.ictxqec
+= er32(ICTXQEC
);
3581 adapter
->stats
.ictxqmtc
+= er32(ICTXQMTC
);
3582 adapter
->stats
.icrxdmtc
+= er32(ICRXDMTC
);
3586 /* Fill out the OS statistics structure */
3587 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3588 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3592 /* RLEC on some newer hardware can be incorrect so build
3593 * our own version based on RUC and ROC */
3594 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3595 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3596 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3597 adapter
->stats
.cexterr
;
3598 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3599 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3600 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3601 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3602 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3605 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3606 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3607 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3608 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3609 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3610 if (hw
->bad_tx_carr_stats_fd
&&
3611 adapter
->link_duplex
== FULL_DUPLEX
) {
3612 adapter
->net_stats
.tx_carrier_errors
= 0;
3613 adapter
->stats
.tncrs
= 0;
3616 /* Tx Dropped needs to be maintained elsewhere */
3619 if (hw
->media_type
== e1000_media_type_copper
) {
3620 if ((adapter
->link_speed
== SPEED_1000
) &&
3621 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3622 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3623 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3626 if ((hw
->mac_type
<= e1000_82546
) &&
3627 (hw
->phy_type
== e1000_phy_m88
) &&
3628 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3629 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3632 /* Management Stats */
3633 if (hw
->has_smbus
) {
3634 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3635 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3636 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3639 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3643 * e1000_intr_msi - Interrupt Handler
3644 * @irq: interrupt number
3645 * @data: pointer to a network interface device structure
3648 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3650 struct net_device
*netdev
= data
;
3651 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3652 struct e1000_hw
*hw
= &adapter
->hw
;
3653 u32 icr
= er32(ICR
);
3655 /* in NAPI mode read ICR disables interrupts using IAM */
3657 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3658 hw
->get_link_status
= 1;
3659 /* 80003ES2LAN workaround-- For packet buffer work-around on
3660 * link down event; disable receives here in the ISR and reset
3661 * adapter in watchdog */
3662 if (netif_carrier_ok(netdev
) &&
3663 (hw
->mac_type
== e1000_80003es2lan
)) {
3664 /* disable receives */
3665 u32 rctl
= er32(RCTL
);
3666 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3668 /* guard against interrupt when we're going down */
3669 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3670 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3673 if (likely(napi_schedule_prep(&adapter
->napi
))) {
3674 adapter
->total_tx_bytes
= 0;
3675 adapter
->total_tx_packets
= 0;
3676 adapter
->total_rx_bytes
= 0;
3677 adapter
->total_rx_packets
= 0;
3678 __napi_schedule(&adapter
->napi
);
3680 e1000_irq_enable(adapter
);
3686 * e1000_intr - Interrupt Handler
3687 * @irq: interrupt number
3688 * @data: pointer to a network interface device structure
3691 static irqreturn_t
e1000_intr(int irq
, void *data
)
3693 struct net_device
*netdev
= data
;
3694 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3695 struct e1000_hw
*hw
= &adapter
->hw
;
3696 u32 rctl
, icr
= er32(ICR
);
3698 if (unlikely((!icr
) || test_bit(__E1000_RESETTING
, &adapter
->flags
)))
3699 return IRQ_NONE
; /* Not our interrupt */
3701 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3702 * not set, then the adapter didn't send an interrupt */
3703 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3704 !(icr
& E1000_ICR_INT_ASSERTED
)))
3707 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3708 * need for the IMC write */
3710 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3711 hw
->get_link_status
= 1;
3712 /* 80003ES2LAN workaround--
3713 * For packet buffer work-around on link down event;
3714 * disable receives here in the ISR and
3715 * reset adapter in watchdog
3717 if (netif_carrier_ok(netdev
) &&
3718 (hw
->mac_type
== e1000_80003es2lan
)) {
3719 /* disable receives */
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 (unlikely(hw
->mac_type
< e1000_82571
)) {
3729 /* disable interrupts, without the synchronize_irq bit */
3731 E1000_WRITE_FLUSH();
3733 if (likely(napi_schedule_prep(&adapter
->napi
))) {
3734 adapter
->total_tx_bytes
= 0;
3735 adapter
->total_tx_packets
= 0;
3736 adapter
->total_rx_bytes
= 0;
3737 adapter
->total_rx_packets
= 0;
3738 __napi_schedule(&adapter
->napi
);
3740 /* this really should not happen! if it does it is basically a
3741 * bug, but not a hard error, so enable ints and continue */
3742 e1000_irq_enable(adapter
);
3748 * e1000_clean - NAPI Rx polling callback
3749 * @adapter: board private structure
3751 static int e1000_clean(struct napi_struct
*napi
, int budget
)
3753 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
3754 struct net_device
*poll_dev
= adapter
->netdev
;
3755 int tx_cleaned
= 0, work_done
= 0;
3757 adapter
= netdev_priv(poll_dev
);
3759 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[0]);
3761 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3762 &work_done
, budget
);
3767 /* If budget not fully consumed, exit the polling mode */
3768 if (work_done
< budget
) {
3769 if (likely(adapter
->itr_setting
& 3))
3770 e1000_set_itr(adapter
);
3771 napi_complete(napi
);
3772 e1000_irq_enable(adapter
);
3779 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3780 * @adapter: board private structure
3782 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3783 struct e1000_tx_ring
*tx_ring
)
3785 struct e1000_hw
*hw
= &adapter
->hw
;
3786 struct net_device
*netdev
= adapter
->netdev
;
3787 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3788 struct e1000_buffer
*buffer_info
;
3789 unsigned int i
, eop
;
3790 unsigned int count
= 0;
3791 bool cleaned
= false;
3792 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3794 i
= tx_ring
->next_to_clean
;
3795 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3796 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3798 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3799 for (cleaned
= false; !cleaned
; ) {
3800 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3801 buffer_info
= &tx_ring
->buffer_info
[i
];
3802 cleaned
= (i
== eop
);
3805 struct sk_buff
*skb
= buffer_info
->skb
;
3806 unsigned int segs
, bytecount
;
3807 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3808 /* multiply data chunks by size of headers */
3809 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3811 total_tx_packets
+= segs
;
3812 total_tx_bytes
+= bytecount
;
3814 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3815 tx_desc
->upper
.data
= 0;
3817 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3820 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3821 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3822 #define E1000_TX_WEIGHT 64
3823 /* weight of a sort for tx, to avoid endless transmit cleanup */
3824 if (count
++ == E1000_TX_WEIGHT
)
3828 tx_ring
->next_to_clean
= i
;
3830 #define TX_WAKE_THRESHOLD 32
3831 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3832 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3833 /* Make sure that anybody stopping the queue after this
3834 * sees the new next_to_clean.
3837 if (netif_queue_stopped(netdev
)) {
3838 netif_wake_queue(netdev
);
3839 ++adapter
->restart_queue
;
3843 if (adapter
->detect_tx_hung
) {
3844 /* Detect a transmit hang in hardware, this serializes the
3845 * check with the clearing of time_stamp and movement of i */
3846 adapter
->detect_tx_hung
= false;
3847 if (tx_ring
->buffer_info
[eop
].dma
&&
3848 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3849 (adapter
->tx_timeout_factor
* HZ
))
3850 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
3852 /* detected Tx unit hang */
3853 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3857 " next_to_use <%x>\n"
3858 " next_to_clean <%x>\n"
3859 "buffer_info[next_to_clean]\n"
3860 " time_stamp <%lx>\n"
3861 " next_to_watch <%x>\n"
3863 " next_to_watch.status <%x>\n",
3864 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3865 sizeof(struct e1000_tx_ring
)),
3866 readl(hw
->hw_addr
+ tx_ring
->tdh
),
3867 readl(hw
->hw_addr
+ tx_ring
->tdt
),
3868 tx_ring
->next_to_use
,
3869 tx_ring
->next_to_clean
,
3870 tx_ring
->buffer_info
[eop
].time_stamp
,
3873 eop_desc
->upper
.fields
.status
);
3874 netif_stop_queue(netdev
);
3877 adapter
->total_tx_bytes
+= total_tx_bytes
;
3878 adapter
->total_tx_packets
+= total_tx_packets
;
3879 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
3880 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
3885 * e1000_rx_checksum - Receive Checksum Offload for 82543
3886 * @adapter: board private structure
3887 * @status_err: receive descriptor status and error fields
3888 * @csum: receive descriptor csum field
3889 * @sk_buff: socket buffer with received data
3892 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
3893 u32 csum
, struct sk_buff
*skb
)
3895 struct e1000_hw
*hw
= &adapter
->hw
;
3896 u16 status
= (u16
)status_err
;
3897 u8 errors
= (u8
)(status_err
>> 24);
3898 skb
->ip_summed
= CHECKSUM_NONE
;
3900 /* 82543 or newer only */
3901 if (unlikely(hw
->mac_type
< e1000_82543
)) return;
3902 /* Ignore Checksum bit is set */
3903 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3904 /* TCP/UDP checksum error bit is set */
3905 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3906 /* let the stack verify checksum errors */
3907 adapter
->hw_csum_err
++;
3910 /* TCP/UDP Checksum has not been calculated */
3911 if (hw
->mac_type
<= e1000_82547_rev_2
) {
3912 if (!(status
& E1000_RXD_STAT_TCPCS
))
3915 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3918 /* It must be a TCP or UDP packet with a valid checksum */
3919 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3920 /* TCP checksum is good */
3921 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3922 } else if (hw
->mac_type
> e1000_82547_rev_2
) {
3923 /* IP fragment with UDP payload */
3924 /* Hardware complements the payload checksum, so we undo it
3925 * and then put the value in host order for further stack use.
3927 __sum16 sum
= (__force __sum16
)htons(csum
);
3928 skb
->csum
= csum_unfold(~sum
);
3929 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3931 adapter
->hw_csum_good
++;
3935 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3936 * @adapter: board private structure
3938 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3939 struct e1000_rx_ring
*rx_ring
,
3940 int *work_done
, int work_to_do
)
3942 struct e1000_hw
*hw
= &adapter
->hw
;
3943 struct net_device
*netdev
= adapter
->netdev
;
3944 struct pci_dev
*pdev
= adapter
->pdev
;
3945 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3946 struct e1000_buffer
*buffer_info
, *next_buffer
;
3947 unsigned long flags
;
3951 int cleaned_count
= 0;
3952 bool cleaned
= false;
3953 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
3955 i
= rx_ring
->next_to_clean
;
3956 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3957 buffer_info
= &rx_ring
->buffer_info
[i
];
3959 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3960 struct sk_buff
*skb
;
3963 if (*work_done
>= work_to_do
)
3967 status
= rx_desc
->status
;
3968 skb
= buffer_info
->skb
;
3969 buffer_info
->skb
= NULL
;
3971 prefetch(skb
->data
- NET_IP_ALIGN
);
3973 if (++i
== rx_ring
->count
) i
= 0;
3974 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3977 next_buffer
= &rx_ring
->buffer_info
[i
];
3981 pci_unmap_single(pdev
,
3983 buffer_info
->length
,
3984 PCI_DMA_FROMDEVICE
);
3986 length
= le16_to_cpu(rx_desc
->length
);
3988 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3989 /* All receives must fit into a single buffer */
3990 E1000_DBG("%s: Receive packet consumed multiple"
3991 " buffers\n", netdev
->name
);
3993 buffer_info
->skb
= skb
;
3997 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3998 last_byte
= *(skb
->data
+ length
- 1);
3999 if (TBI_ACCEPT(hw
, status
, rx_desc
->errors
, length
,
4001 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4002 e1000_tbi_adjust_stats(hw
, &adapter
->stats
,
4004 spin_unlock_irqrestore(&adapter
->stats_lock
,
4009 buffer_info
->skb
= skb
;
4014 /* adjust length to remove Ethernet CRC, this must be
4015 * done after the TBI_ACCEPT workaround above */
4018 /* probably a little skewed due to removing CRC */
4019 total_rx_bytes
+= length
;
4022 /* code added for copybreak, this should improve
4023 * performance for small packets with large amounts
4024 * of reassembly being done in the stack */
4025 if (length
< copybreak
) {
4026 struct sk_buff
*new_skb
=
4027 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4029 skb_reserve(new_skb
, NET_IP_ALIGN
);
4030 skb_copy_to_linear_data_offset(new_skb
,
4036 /* save the skb in buffer_info as good */
4037 buffer_info
->skb
= skb
;
4040 /* else just continue with the old one */
4042 /* end copybreak code */
4043 skb_put(skb
, length
);
4045 /* Receive Checksum Offload */
4046 e1000_rx_checksum(adapter
,
4048 ((u32
)(rx_desc
->errors
) << 24),
4049 le16_to_cpu(rx_desc
->csum
), skb
);
4051 skb
->protocol
= eth_type_trans(skb
, netdev
);
4053 if (unlikely(adapter
->vlgrp
&&
4054 (status
& E1000_RXD_STAT_VP
))) {
4055 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4056 le16_to_cpu(rx_desc
->special
));
4058 netif_receive_skb(skb
);
4062 rx_desc
->status
= 0;
4064 /* return some buffers to hardware, one at a time is too slow */
4065 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4066 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4070 /* use prefetched values */
4072 buffer_info
= next_buffer
;
4074 rx_ring
->next_to_clean
= i
;
4076 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4078 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4080 adapter
->total_rx_packets
+= total_rx_packets
;
4081 adapter
->total_rx_bytes
+= total_rx_bytes
;
4082 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4083 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4088 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4089 * @adapter: address of board private structure
4092 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4093 struct e1000_rx_ring
*rx_ring
,
4096 struct e1000_hw
*hw
= &adapter
->hw
;
4097 struct net_device
*netdev
= adapter
->netdev
;
4098 struct pci_dev
*pdev
= adapter
->pdev
;
4099 struct e1000_rx_desc
*rx_desc
;
4100 struct e1000_buffer
*buffer_info
;
4101 struct sk_buff
*skb
;
4103 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4105 i
= rx_ring
->next_to_use
;
4106 buffer_info
= &rx_ring
->buffer_info
[i
];
4108 while (cleaned_count
--) {
4109 skb
= buffer_info
->skb
;
4115 skb
= netdev_alloc_skb(netdev
, bufsz
);
4116 if (unlikely(!skb
)) {
4117 /* Better luck next round */
4118 adapter
->alloc_rx_buff_failed
++;
4122 /* Fix for errata 23, can't cross 64kB boundary */
4123 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4124 struct sk_buff
*oldskb
= skb
;
4125 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4126 "at %p\n", bufsz
, skb
->data
);
4127 /* Try again, without freeing the previous */
4128 skb
= netdev_alloc_skb(netdev
, bufsz
);
4129 /* Failed allocation, critical failure */
4131 dev_kfree_skb(oldskb
);
4135 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4138 dev_kfree_skb(oldskb
);
4139 break; /* while !buffer_info->skb */
4142 /* Use new allocation */
4143 dev_kfree_skb(oldskb
);
4145 /* Make buffer alignment 2 beyond a 16 byte boundary
4146 * this will result in a 16 byte aligned IP header after
4147 * the 14 byte MAC header is removed
4149 skb_reserve(skb
, NET_IP_ALIGN
);
4151 buffer_info
->skb
= skb
;
4152 buffer_info
->length
= adapter
->rx_buffer_len
;
4154 buffer_info
->dma
= pci_map_single(pdev
,
4156 adapter
->rx_buffer_len
,
4157 PCI_DMA_FROMDEVICE
);
4159 /* Fix for errata 23, can't cross 64kB boundary */
4160 if (!e1000_check_64k_bound(adapter
,
4161 (void *)(unsigned long)buffer_info
->dma
,
4162 adapter
->rx_buffer_len
)) {
4163 DPRINTK(RX_ERR
, ERR
,
4164 "dma align check failed: %u bytes at %p\n",
4165 adapter
->rx_buffer_len
,
4166 (void *)(unsigned long)buffer_info
->dma
);
4168 buffer_info
->skb
= NULL
;
4170 pci_unmap_single(pdev
, buffer_info
->dma
,
4171 adapter
->rx_buffer_len
,
4172 PCI_DMA_FROMDEVICE
);
4174 break; /* while !buffer_info->skb */
4176 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4177 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4179 if (unlikely(++i
== rx_ring
->count
))
4181 buffer_info
= &rx_ring
->buffer_info
[i
];
4184 if (likely(rx_ring
->next_to_use
!= i
)) {
4185 rx_ring
->next_to_use
= i
;
4186 if (unlikely(i
-- == 0))
4187 i
= (rx_ring
->count
- 1);
4189 /* Force memory writes to complete before letting h/w
4190 * know there are new descriptors to fetch. (Only
4191 * applicable for weak-ordered memory model archs,
4192 * such as IA-64). */
4194 writel(i
, hw
->hw_addr
+ rx_ring
->rdt
);
4199 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4203 static void e1000_smartspeed(struct e1000_adapter
*adapter
)
4205 struct e1000_hw
*hw
= &adapter
->hw
;
4209 if ((hw
->phy_type
!= e1000_phy_igp
) || !hw
->autoneg
||
4210 !(hw
->autoneg_advertised
& ADVERTISE_1000_FULL
))
4213 if (adapter
->smartspeed
== 0) {
4214 /* If Master/Slave config fault is asserted twice,
4215 * we assume back-to-back */
4216 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4217 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4218 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4219 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4220 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4221 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4222 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4223 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
,
4225 adapter
->smartspeed
++;
4226 if (!e1000_phy_setup_autoneg(hw
) &&
4227 !e1000_read_phy_reg(hw
, PHY_CTRL
,
4229 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4230 MII_CR_RESTART_AUTO_NEG
);
4231 e1000_write_phy_reg(hw
, PHY_CTRL
,
4236 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4237 /* If still no link, perhaps using 2/3 pair cable */
4238 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4239 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4240 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
, phy_ctrl
);
4241 if (!e1000_phy_setup_autoneg(hw
) &&
4242 !e1000_read_phy_reg(hw
, PHY_CTRL
, &phy_ctrl
)) {
4243 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4244 MII_CR_RESTART_AUTO_NEG
);
4245 e1000_write_phy_reg(hw
, PHY_CTRL
, phy_ctrl
);
4248 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4249 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4250 adapter
->smartspeed
= 0;
4260 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4266 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4279 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4282 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4283 struct e1000_hw
*hw
= &adapter
->hw
;
4284 struct mii_ioctl_data
*data
= if_mii(ifr
);
4288 unsigned long flags
;
4290 if (hw
->media_type
!= e1000_media_type_copper
)
4295 data
->phy_id
= hw
->phy_addr
;
4298 if (!capable(CAP_NET_ADMIN
))
4300 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4301 if (e1000_read_phy_reg(hw
, data
->reg_num
& 0x1F,
4303 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4306 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4309 if (!capable(CAP_NET_ADMIN
))
4311 if (data
->reg_num
& ~(0x1F))
4313 mii_reg
= data
->val_in
;
4314 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4315 if (e1000_write_phy_reg(hw
, data
->reg_num
,
4317 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4320 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4321 if (hw
->media_type
== e1000_media_type_copper
) {
4322 switch (data
->reg_num
) {
4324 if (mii_reg
& MII_CR_POWER_DOWN
)
4326 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4328 hw
->autoneg_advertised
= 0x2F;
4331 spddplx
= SPEED_1000
;
4332 else if (mii_reg
& 0x2000)
4333 spddplx
= SPEED_100
;
4336 spddplx
+= (mii_reg
& 0x100)
4339 retval
= e1000_set_spd_dplx(adapter
,
4344 if (netif_running(adapter
->netdev
))
4345 e1000_reinit_locked(adapter
);
4347 e1000_reset(adapter
);
4349 case M88E1000_PHY_SPEC_CTRL
:
4350 case M88E1000_EXT_PHY_SPEC_CTRL
:
4351 if (e1000_phy_reset(hw
))
4356 switch (data
->reg_num
) {
4358 if (mii_reg
& MII_CR_POWER_DOWN
)
4360 if (netif_running(adapter
->netdev
))
4361 e1000_reinit_locked(adapter
);
4363 e1000_reset(adapter
);
4371 return E1000_SUCCESS
;
4374 void e1000_pci_set_mwi(struct e1000_hw
*hw
)
4376 struct e1000_adapter
*adapter
= hw
->back
;
4377 int ret_val
= pci_set_mwi(adapter
->pdev
);
4380 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4383 void e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4385 struct e1000_adapter
*adapter
= hw
->back
;
4387 pci_clear_mwi(adapter
->pdev
);
4390 int e1000_pcix_get_mmrbc(struct e1000_hw
*hw
)
4392 struct e1000_adapter
*adapter
= hw
->back
;
4393 return pcix_get_mmrbc(adapter
->pdev
);
4396 void e1000_pcix_set_mmrbc(struct e1000_hw
*hw
, int mmrbc
)
4398 struct e1000_adapter
*adapter
= hw
->back
;
4399 pcix_set_mmrbc(adapter
->pdev
, mmrbc
);
4402 s32
e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, u32 reg
, u16
*value
)
4404 struct e1000_adapter
*adapter
= hw
->back
;
4407 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4409 return -E1000_ERR_CONFIG
;
4411 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4413 return E1000_SUCCESS
;
4416 void e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, u32 value
)
4421 static void e1000_vlan_rx_register(struct net_device
*netdev
,
4422 struct vlan_group
*grp
)
4424 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4425 struct e1000_hw
*hw
= &adapter
->hw
;
4428 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4429 e1000_irq_disable(adapter
);
4430 adapter
->vlgrp
= grp
;
4433 /* enable VLAN tag insert/strip */
4435 ctrl
|= E1000_CTRL_VME
;
4438 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4439 /* enable VLAN receive filtering */
4441 rctl
&= ~E1000_RCTL_CFIEN
;
4443 e1000_update_mng_vlan(adapter
);
4446 /* disable VLAN tag insert/strip */
4448 ctrl
&= ~E1000_CTRL_VME
;
4451 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4452 if (adapter
->mng_vlan_id
!=
4453 (u16
)E1000_MNG_VLAN_NONE
) {
4454 e1000_vlan_rx_kill_vid(netdev
,
4455 adapter
->mng_vlan_id
);
4456 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4461 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4462 e1000_irq_enable(adapter
);
4465 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4467 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4468 struct e1000_hw
*hw
= &adapter
->hw
;
4471 if ((hw
->mng_cookie
.status
&
4472 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4473 (vid
== adapter
->mng_vlan_id
))
4475 /* add VID to filter table */
4476 index
= (vid
>> 5) & 0x7F;
4477 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4478 vfta
|= (1 << (vid
& 0x1F));
4479 e1000_write_vfta(hw
, index
, vfta
);
4482 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4484 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4485 struct e1000_hw
*hw
= &adapter
->hw
;
4488 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4489 e1000_irq_disable(adapter
);
4490 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4491 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4492 e1000_irq_enable(adapter
);
4494 if ((hw
->mng_cookie
.status
&
4495 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4496 (vid
== adapter
->mng_vlan_id
)) {
4497 /* release control to f/w */
4498 e1000_release_hw_control(adapter
);
4502 /* remove VID from filter table */
4503 index
= (vid
>> 5) & 0x7F;
4504 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4505 vfta
&= ~(1 << (vid
& 0x1F));
4506 e1000_write_vfta(hw
, index
, vfta
);
4509 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
4511 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4513 if (adapter
->vlgrp
) {
4515 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4516 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4518 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4523 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
)
4525 struct e1000_hw
*hw
= &adapter
->hw
;
4529 /* Fiber NICs only allow 1000 gbps Full duplex */
4530 if ((hw
->media_type
== e1000_media_type_fiber
) &&
4531 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4532 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4537 case SPEED_10
+ DUPLEX_HALF
:
4538 hw
->forced_speed_duplex
= e1000_10_half
;
4540 case SPEED_10
+ DUPLEX_FULL
:
4541 hw
->forced_speed_duplex
= e1000_10_full
;
4543 case SPEED_100
+ DUPLEX_HALF
:
4544 hw
->forced_speed_duplex
= e1000_100_half
;
4546 case SPEED_100
+ DUPLEX_FULL
:
4547 hw
->forced_speed_duplex
= e1000_100_full
;
4549 case SPEED_1000
+ DUPLEX_FULL
:
4551 hw
->autoneg_advertised
= ADVERTISE_1000_FULL
;
4553 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4555 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4561 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4563 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4564 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4565 struct e1000_hw
*hw
= &adapter
->hw
;
4566 u32 ctrl
, ctrl_ext
, rctl
, status
;
4567 u32 wufc
= adapter
->wol
;
4572 netif_device_detach(netdev
);
4574 if (netif_running(netdev
)) {
4575 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4576 e1000_down(adapter
);
4580 retval
= pci_save_state(pdev
);
4585 status
= er32(STATUS
);
4586 if (status
& E1000_STATUS_LU
)
4587 wufc
&= ~E1000_WUFC_LNKC
;
4590 e1000_setup_rctl(adapter
);
4591 e1000_set_rx_mode(netdev
);
4593 /* turn on all-multi mode if wake on multicast is enabled */
4594 if (wufc
& E1000_WUFC_MC
) {
4596 rctl
|= E1000_RCTL_MPE
;
4600 if (hw
->mac_type
>= e1000_82540
) {
4602 /* advertise wake from D3Cold */
4603 #define E1000_CTRL_ADVD3WUC 0x00100000
4604 /* phy power management enable */
4605 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4606 ctrl
|= E1000_CTRL_ADVD3WUC
|
4607 E1000_CTRL_EN_PHY_PWR_MGMT
;
4611 if (hw
->media_type
== e1000_media_type_fiber
||
4612 hw
->media_type
== e1000_media_type_internal_serdes
) {
4613 /* keep the laser running in D3 */
4614 ctrl_ext
= er32(CTRL_EXT
);
4615 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4616 ew32(CTRL_EXT
, ctrl_ext
);
4619 /* Allow time for pending master requests to run */
4620 e1000_disable_pciex_master(hw
);
4622 ew32(WUC
, E1000_WUC_PME_EN
);
4624 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4625 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4629 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4630 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4633 e1000_release_manageability(adapter
);
4635 /* make sure adapter isn't asleep if manageability is enabled */
4636 if (adapter
->en_mng_pt
) {
4637 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4638 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4641 if (hw
->phy_type
== e1000_phy_igp_3
)
4642 e1000_phy_powerdown_workaround(hw
);
4644 if (netif_running(netdev
))
4645 e1000_free_irq(adapter
);
4647 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4648 * would have already happened in close and is redundant. */
4649 e1000_release_hw_control(adapter
);
4651 pci_disable_device(pdev
);
4653 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4659 static int e1000_resume(struct pci_dev
*pdev
)
4661 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4662 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4663 struct e1000_hw
*hw
= &adapter
->hw
;
4666 pci_set_power_state(pdev
, PCI_D0
);
4667 pci_restore_state(pdev
);
4669 if (adapter
->need_ioport
)
4670 err
= pci_enable_device(pdev
);
4672 err
= pci_enable_device_mem(pdev
);
4674 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4677 pci_set_master(pdev
);
4679 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4680 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4682 if (netif_running(netdev
)) {
4683 err
= e1000_request_irq(adapter
);
4688 e1000_power_up_phy(adapter
);
4689 e1000_reset(adapter
);
4692 e1000_init_manageability(adapter
);
4694 if (netif_running(netdev
))
4697 netif_device_attach(netdev
);
4699 /* If the controller is 82573 and f/w is AMT, do not set
4700 * DRV_LOAD until the interface is up. For all other cases,
4701 * let the f/w know that the h/w is now under the control
4703 if (hw
->mac_type
!= e1000_82573
||
4704 !e1000_check_mng_mode(hw
))
4705 e1000_get_hw_control(adapter
);
4711 static void e1000_shutdown(struct pci_dev
*pdev
)
4713 e1000_suspend(pdev
, PMSG_SUSPEND
);
4716 #ifdef CONFIG_NET_POLL_CONTROLLER
4718 * Polling 'interrupt' - used by things like netconsole to send skbs
4719 * without having to re-enable interrupts. It's not called while
4720 * the interrupt routine is executing.
4722 static void e1000_netpoll(struct net_device
*netdev
)
4724 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4726 disable_irq(adapter
->pdev
->irq
);
4727 e1000_intr(adapter
->pdev
->irq
, netdev
);
4728 enable_irq(adapter
->pdev
->irq
);
4733 * e1000_io_error_detected - called when PCI error is detected
4734 * @pdev: Pointer to PCI device
4735 * @state: The current pci conneection state
4737 * This function is called after a PCI bus error affecting
4738 * this device has been detected.
4740 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4741 pci_channel_state_t state
)
4743 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4744 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4746 netif_device_detach(netdev
);
4748 if (netif_running(netdev
))
4749 e1000_down(adapter
);
4750 pci_disable_device(pdev
);
4752 /* Request a slot slot reset. */
4753 return PCI_ERS_RESULT_NEED_RESET
;
4757 * e1000_io_slot_reset - called after the pci bus has been reset.
4758 * @pdev: Pointer to PCI device
4760 * Restart the card from scratch, as if from a cold-boot. Implementation
4761 * resembles the first-half of the e1000_resume routine.
4763 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4765 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4766 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4767 struct e1000_hw
*hw
= &adapter
->hw
;
4770 if (adapter
->need_ioport
)
4771 err
= pci_enable_device(pdev
);
4773 err
= pci_enable_device_mem(pdev
);
4775 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4776 return PCI_ERS_RESULT_DISCONNECT
;
4778 pci_set_master(pdev
);
4780 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4781 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4783 e1000_reset(adapter
);
4786 return PCI_ERS_RESULT_RECOVERED
;
4790 * e1000_io_resume - called when traffic can start flowing again.
4791 * @pdev: Pointer to PCI device
4793 * This callback is called when the error recovery driver tells us that
4794 * its OK to resume normal operation. Implementation resembles the
4795 * second-half of the e1000_resume routine.
4797 static void e1000_io_resume(struct pci_dev
*pdev
)
4799 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4800 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4801 struct e1000_hw
*hw
= &adapter
->hw
;
4803 e1000_init_manageability(adapter
);
4805 if (netif_running(netdev
)) {
4806 if (e1000_up(adapter
)) {
4807 printk("e1000: can't bring device back up after reset\n");
4812 netif_device_attach(netdev
);
4814 /* If the controller is 82573 and f/w is AMT, do not set
4815 * DRV_LOAD until the interface is up. For all other cases,
4816 * let the f/w know that the h/w is now under the control
4818 if (hw
->mac_type
!= e1000_82573
||
4819 !e1000_check_mng_mode(hw
))
4820 e1000_get_hw_control(adapter
);