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 "7.3.20-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
:
892 * e1000_probe - Device Initialization Routine
893 * @pdev: PCI device information struct
894 * @ent: entry in e1000_pci_tbl
896 * Returns 0 on success, negative on failure
898 * e1000_probe initializes an adapter identified by a pci_dev structure.
899 * The OS initialization, configuring of the adapter private structure,
900 * and a hardware reset occur.
902 static int __devinit
e1000_probe(struct pci_dev
*pdev
,
903 const struct pci_device_id
*ent
)
905 struct net_device
*netdev
;
906 struct e1000_adapter
*adapter
;
909 static int cards_found
= 0;
910 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
911 int i
, err
, pci_using_dac
;
913 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
914 int bars
, need_ioport
;
915 DECLARE_MAC_BUF(mac
);
917 /* do not allocate ioport bars when not needed */
918 need_ioport
= e1000_is_need_ioport(pdev
);
920 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
| IORESOURCE_IO
);
921 err
= pci_enable_device(pdev
);
923 bars
= pci_select_bars(pdev
, IORESOURCE_MEM
);
924 err
= pci_enable_device(pdev
);
929 if (!pci_set_dma_mask(pdev
, DMA_64BIT_MASK
) &&
930 !pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
)) {
933 err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
935 err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
937 E1000_ERR("No usable DMA configuration, "
945 err
= pci_request_selected_regions(pdev
, bars
, e1000_driver_name
);
949 pci_set_master(pdev
);
952 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
954 goto err_alloc_etherdev
;
956 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
958 pci_set_drvdata(pdev
, netdev
);
959 adapter
= netdev_priv(netdev
);
960 adapter
->netdev
= netdev
;
961 adapter
->pdev
= pdev
;
962 adapter
->msg_enable
= (1 << debug
) - 1;
963 adapter
->bars
= bars
;
964 adapter
->need_ioport
= need_ioport
;
970 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, BAR_0
),
971 pci_resource_len(pdev
, BAR_0
));
975 if (adapter
->need_ioport
) {
976 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
977 if (pci_resource_len(pdev
, i
) == 0)
979 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
980 hw
->io_base
= pci_resource_start(pdev
, i
);
986 netdev
->open
= &e1000_open
;
987 netdev
->stop
= &e1000_close
;
988 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
989 netdev
->get_stats
= &e1000_get_stats
;
990 netdev
->set_rx_mode
= &e1000_set_rx_mode
;
991 netdev
->set_mac_address
= &e1000_set_mac
;
992 netdev
->change_mtu
= &e1000_change_mtu
;
993 netdev
->do_ioctl
= &e1000_ioctl
;
994 e1000_set_ethtool_ops(netdev
);
995 netdev
->tx_timeout
= &e1000_tx_timeout
;
996 netdev
->watchdog_timeo
= 5 * HZ
;
997 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
998 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
999 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
1000 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 netdev
->poll_controller
= e1000_netpoll
;
1004 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
1006 adapter
->bd_number
= cards_found
;
1008 /* setup the private structure */
1010 err
= e1000_sw_init(adapter
);
1015 /* Flash BAR mapping must happen after e1000_sw_init
1016 * because it depends on mac_type */
1017 if ((hw
->mac_type
== e1000_ich8lan
) &&
1018 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
1020 ioremap(pci_resource_start(pdev
, 1),
1021 pci_resource_len(pdev
, 1));
1022 if (!hw
->flash_address
)
1026 if (e1000_check_phy_reset_block(hw
))
1027 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
1029 if (hw
->mac_type
>= e1000_82543
) {
1030 netdev
->features
= NETIF_F_SG
|
1032 NETIF_F_HW_VLAN_TX
|
1033 NETIF_F_HW_VLAN_RX
|
1034 NETIF_F_HW_VLAN_FILTER
;
1035 if (hw
->mac_type
== e1000_ich8lan
)
1036 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
1039 if ((hw
->mac_type
>= e1000_82544
) &&
1040 (hw
->mac_type
!= e1000_82547
))
1041 netdev
->features
|= NETIF_F_TSO
;
1043 if (hw
->mac_type
> e1000_82547_rev_2
)
1044 netdev
->features
|= NETIF_F_TSO6
;
1046 netdev
->features
|= NETIF_F_HIGHDMA
;
1048 netdev
->features
|= NETIF_F_LLTX
;
1050 netdev
->vlan_features
|= NETIF_F_TSO
;
1051 netdev
->vlan_features
|= NETIF_F_TSO6
;
1052 netdev
->vlan_features
|= NETIF_F_HW_CSUM
;
1053 netdev
->vlan_features
|= NETIF_F_SG
;
1055 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(hw
);
1057 /* initialize eeprom parameters */
1058 if (e1000_init_eeprom_params(hw
)) {
1059 E1000_ERR("EEPROM initialization failed\n");
1063 /* before reading the EEPROM, reset the controller to
1064 * put the device in a known good starting state */
1068 /* make sure the EEPROM is good */
1069 if (e1000_validate_eeprom_checksum(hw
) < 0) {
1070 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
1071 e1000_dump_eeprom(adapter
);
1073 * set MAC address to all zeroes to invalidate and temporary
1074 * disable this device for the user. This blocks regular
1075 * traffic while still permitting ethtool ioctls from reaching
1076 * the hardware as well as allowing the user to run the
1077 * interface after manually setting a hw addr using
1080 memset(hw
->mac_addr
, 0, netdev
->addr_len
);
1082 /* copy the MAC address out of the EEPROM */
1083 if (e1000_read_mac_addr(hw
))
1084 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
1086 /* don't block initalization here due to bad MAC address */
1087 memcpy(netdev
->dev_addr
, hw
->mac_addr
, netdev
->addr_len
);
1088 memcpy(netdev
->perm_addr
, hw
->mac_addr
, netdev
->addr_len
);
1090 if (!is_valid_ether_addr(netdev
->perm_addr
))
1091 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
1093 e1000_get_bus_info(hw
);
1095 init_timer(&adapter
->tx_fifo_stall_timer
);
1096 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
1097 adapter
->tx_fifo_stall_timer
.data
= (unsigned long)adapter
;
1099 init_timer(&adapter
->watchdog_timer
);
1100 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
1101 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1103 init_timer(&adapter
->phy_info_timer
);
1104 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
1105 adapter
->phy_info_timer
.data
= (unsigned long)adapter
;
1107 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
1109 e1000_check_options(adapter
);
1111 /* Initial Wake on LAN setting
1112 * If APM wake is enabled in the EEPROM,
1113 * enable the ACPI Magic Packet filter
1116 switch (hw
->mac_type
) {
1117 case e1000_82542_rev2_0
:
1118 case e1000_82542_rev2_1
:
1122 e1000_read_eeprom(hw
,
1123 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
1124 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
1127 e1000_read_eeprom(hw
,
1128 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
1129 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
1132 case e1000_82546_rev_3
:
1134 case e1000_80003es2lan
:
1135 if (er32(STATUS
) & E1000_STATUS_FUNC_1
){
1136 e1000_read_eeprom(hw
,
1137 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1142 e1000_read_eeprom(hw
,
1143 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1146 if (eeprom_data
& eeprom_apme_mask
)
1147 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1149 /* now that we have the eeprom settings, apply the special cases
1150 * where the eeprom may be wrong or the board simply won't support
1151 * wake on lan on a particular port */
1152 switch (pdev
->device
) {
1153 case E1000_DEV_ID_82546GB_PCIE
:
1154 adapter
->eeprom_wol
= 0;
1156 case E1000_DEV_ID_82546EB_FIBER
:
1157 case E1000_DEV_ID_82546GB_FIBER
:
1158 case E1000_DEV_ID_82571EB_FIBER
:
1159 /* Wake events only supported on port A for dual fiber
1160 * regardless of eeprom setting */
1161 if (er32(STATUS
) & E1000_STATUS_FUNC_1
)
1162 adapter
->eeprom_wol
= 0;
1164 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
1165 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
1166 case E1000_DEV_ID_82571EB_QUAD_FIBER
:
1167 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
1168 case E1000_DEV_ID_82571PT_QUAD_COPPER
:
1169 /* if quad port adapter, disable WoL on all but port A */
1170 if (global_quad_port_a
!= 0)
1171 adapter
->eeprom_wol
= 0;
1173 adapter
->quad_port_a
= 1;
1174 /* Reset for multiple quad port adapters */
1175 if (++global_quad_port_a
== 4)
1176 global_quad_port_a
= 0;
1180 /* initialize the wol settings based on the eeprom settings */
1181 adapter
->wol
= adapter
->eeprom_wol
;
1183 /* print bus type/speed/width info */
1184 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1185 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1186 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1187 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1188 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1189 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1190 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1191 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1192 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1193 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1194 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1197 printk("%s\n", print_mac(mac
, netdev
->dev_addr
));
1199 if (hw
->bus_type
== e1000_bus_type_pci_express
) {
1200 DPRINTK(PROBE
, WARNING
, "This device (id %04x:%04x) will no "
1201 "longer be supported by this driver in the future.\n",
1202 pdev
->vendor
, pdev
->device
);
1203 DPRINTK(PROBE
, WARNING
, "please use the \"e1000e\" "
1204 "driver instead.\n");
1207 /* reset the hardware with the new settings */
1208 e1000_reset(adapter
);
1210 /* If the controller is 82573 and f/w is AMT, do not set
1211 * DRV_LOAD until the interface is up. For all other cases,
1212 * let the f/w know that the h/w is now under the control
1214 if (hw
->mac_type
!= e1000_82573
||
1215 !e1000_check_mng_mode(hw
))
1216 e1000_get_hw_control(adapter
);
1218 /* tell the stack to leave us alone until e1000_open() is called */
1219 netif_carrier_off(netdev
);
1220 netif_stop_queue(netdev
);
1222 strcpy(netdev
->name
, "eth%d");
1223 err
= register_netdev(netdev
);
1227 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1233 e1000_release_hw_control(adapter
);
1235 if (!e1000_check_phy_reset_block(hw
))
1236 e1000_phy_hw_reset(hw
);
1238 if (hw
->flash_address
)
1239 iounmap(hw
->flash_address
);
1241 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1242 dev_put(&adapter
->polling_netdev
[i
]);
1244 kfree(adapter
->tx_ring
);
1245 kfree(adapter
->rx_ring
);
1246 kfree(adapter
->polling_netdev
);
1248 iounmap(hw
->hw_addr
);
1250 free_netdev(netdev
);
1252 pci_release_selected_regions(pdev
, bars
);
1255 pci_disable_device(pdev
);
1260 * e1000_remove - Device Removal Routine
1261 * @pdev: PCI device information struct
1263 * e1000_remove is called by the PCI subsystem to alert the driver
1264 * that it should release a PCI device. The could be caused by a
1265 * Hot-Plug event, or because the driver is going to be removed from
1269 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
1271 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1272 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1273 struct e1000_hw
*hw
= &adapter
->hw
;
1276 cancel_work_sync(&adapter
->reset_task
);
1278 e1000_release_manageability(adapter
);
1280 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1281 * would have already happened in close and is redundant. */
1282 e1000_release_hw_control(adapter
);
1284 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1285 dev_put(&adapter
->polling_netdev
[i
]);
1287 unregister_netdev(netdev
);
1289 if (!e1000_check_phy_reset_block(hw
))
1290 e1000_phy_hw_reset(hw
);
1292 kfree(adapter
->tx_ring
);
1293 kfree(adapter
->rx_ring
);
1294 kfree(adapter
->polling_netdev
);
1296 iounmap(hw
->hw_addr
);
1297 if (hw
->flash_address
)
1298 iounmap(hw
->flash_address
);
1299 pci_release_selected_regions(pdev
, adapter
->bars
);
1301 free_netdev(netdev
);
1303 pci_disable_device(pdev
);
1307 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1308 * @adapter: board private structure to initialize
1310 * e1000_sw_init initializes the Adapter private data structure.
1311 * Fields are initialized based on PCI device information and
1312 * OS network device settings (MTU size).
1315 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
1317 struct e1000_hw
*hw
= &adapter
->hw
;
1318 struct net_device
*netdev
= adapter
->netdev
;
1319 struct pci_dev
*pdev
= adapter
->pdev
;
1322 /* PCI config space info */
1324 hw
->vendor_id
= pdev
->vendor
;
1325 hw
->device_id
= pdev
->device
;
1326 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1327 hw
->subsystem_id
= pdev
->subsystem_device
;
1328 hw
->revision_id
= pdev
->revision
;
1330 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1332 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1333 hw
->max_frame_size
= netdev
->mtu
+
1334 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1335 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1337 /* identify the MAC */
1339 if (e1000_set_mac_type(hw
)) {
1340 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1344 switch (hw
->mac_type
) {
1349 case e1000_82541_rev_2
:
1350 case e1000_82547_rev_2
:
1351 hw
->phy_init_script
= 1;
1355 e1000_set_media_type(hw
);
1357 hw
->wait_autoneg_complete
= false;
1358 hw
->tbi_compatibility_en
= true;
1359 hw
->adaptive_ifs
= true;
1361 /* Copper options */
1363 if (hw
->media_type
== e1000_media_type_copper
) {
1364 hw
->mdix
= AUTO_ALL_MODES
;
1365 hw
->disable_polarity_correction
= false;
1366 hw
->master_slave
= E1000_MASTER_SLAVE
;
1369 adapter
->num_tx_queues
= 1;
1370 adapter
->num_rx_queues
= 1;
1372 if (e1000_alloc_queues(adapter
)) {
1373 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1377 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1378 adapter
->polling_netdev
[i
].priv
= adapter
;
1379 dev_hold(&adapter
->polling_netdev
[i
]);
1380 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1382 spin_lock_init(&adapter
->tx_queue_lock
);
1384 /* Explicitly disable IRQ since the NIC can be in any state. */
1385 e1000_irq_disable(adapter
);
1387 spin_lock_init(&adapter
->stats_lock
);
1389 set_bit(__E1000_DOWN
, &adapter
->flags
);
1395 * e1000_alloc_queues - Allocate memory for all rings
1396 * @adapter: board private structure to initialize
1398 * We allocate one ring per queue at run-time since we don't know the
1399 * number of queues at compile-time. The polling_netdev array is
1400 * intended for Multiqueue, but should work fine with a single queue.
1403 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1405 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1406 sizeof(struct e1000_tx_ring
), GFP_KERNEL
);
1407 if (!adapter
->tx_ring
)
1410 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1411 sizeof(struct e1000_rx_ring
), GFP_KERNEL
);
1412 if (!adapter
->rx_ring
) {
1413 kfree(adapter
->tx_ring
);
1417 adapter
->polling_netdev
= kcalloc(adapter
->num_rx_queues
,
1418 sizeof(struct net_device
),
1420 if (!adapter
->polling_netdev
) {
1421 kfree(adapter
->tx_ring
);
1422 kfree(adapter
->rx_ring
);
1426 return E1000_SUCCESS
;
1430 * e1000_open - Called when a network interface is made active
1431 * @netdev: network interface device structure
1433 * Returns 0 on success, negative value on failure
1435 * The open entry point is called when a network interface is made
1436 * active by the system (IFF_UP). At this point all resources needed
1437 * for transmit and receive operations are allocated, the interrupt
1438 * handler is registered with the OS, the watchdog timer is started,
1439 * and the stack is notified that the interface is ready.
1442 static int e1000_open(struct net_device
*netdev
)
1444 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1445 struct e1000_hw
*hw
= &adapter
->hw
;
1448 /* disallow open during test */
1449 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1452 /* allocate transmit descriptors */
1453 err
= e1000_setup_all_tx_resources(adapter
);
1457 /* allocate receive descriptors */
1458 err
= e1000_setup_all_rx_resources(adapter
);
1462 e1000_power_up_phy(adapter
);
1464 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1465 if ((hw
->mng_cookie
.status
&
1466 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1467 e1000_update_mng_vlan(adapter
);
1470 /* If AMT is enabled, let the firmware know that the network
1471 * interface is now open */
1472 if (hw
->mac_type
== e1000_82573
&&
1473 e1000_check_mng_mode(hw
))
1474 e1000_get_hw_control(adapter
);
1476 /* before we allocate an interrupt, we must be ready to handle it.
1477 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1478 * as soon as we call pci_request_irq, so we have to setup our
1479 * clean_rx handler before we do so. */
1480 e1000_configure(adapter
);
1482 err
= e1000_request_irq(adapter
);
1486 /* From here on the code is the same as e1000_up() */
1487 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1489 napi_enable(&adapter
->napi
);
1491 e1000_irq_enable(adapter
);
1493 netif_start_queue(netdev
);
1495 /* fire a link status change interrupt to start the watchdog */
1496 ew32(ICS
, E1000_ICS_LSC
);
1498 return E1000_SUCCESS
;
1501 e1000_release_hw_control(adapter
);
1502 e1000_power_down_phy(adapter
);
1503 e1000_free_all_rx_resources(adapter
);
1505 e1000_free_all_tx_resources(adapter
);
1507 e1000_reset(adapter
);
1513 * e1000_close - Disables a network interface
1514 * @netdev: network interface device structure
1516 * Returns 0, this is not allowed to fail
1518 * The close entry point is called when an interface is de-activated
1519 * by the OS. The hardware is still under the drivers control, but
1520 * needs to be disabled. A global MAC reset is issued to stop the
1521 * hardware, and all transmit and receive resources are freed.
1524 static int e1000_close(struct net_device
*netdev
)
1526 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1527 struct e1000_hw
*hw
= &adapter
->hw
;
1529 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1530 e1000_down(adapter
);
1531 e1000_power_down_phy(adapter
);
1532 e1000_free_irq(adapter
);
1534 e1000_free_all_tx_resources(adapter
);
1535 e1000_free_all_rx_resources(adapter
);
1537 /* kill manageability vlan ID if supported, but not if a vlan with
1538 * the same ID is registered on the host OS (let 8021q kill it) */
1539 if ((hw
->mng_cookie
.status
&
1540 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1542 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1543 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1546 /* If AMT is enabled, let the firmware know that the network
1547 * interface is now closed */
1548 if (hw
->mac_type
== e1000_82573
&&
1549 e1000_check_mng_mode(hw
))
1550 e1000_release_hw_control(adapter
);
1556 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1557 * @adapter: address of board private structure
1558 * @start: address of beginning of memory
1559 * @len: length of memory
1561 static bool e1000_check_64k_bound(struct e1000_adapter
*adapter
, void *start
,
1564 struct e1000_hw
*hw
= &adapter
->hw
;
1565 unsigned long begin
= (unsigned long)start
;
1566 unsigned long end
= begin
+ len
;
1568 /* First rev 82545 and 82546 need to not allow any memory
1569 * write location to cross 64k boundary due to errata 23 */
1570 if (hw
->mac_type
== e1000_82545
||
1571 hw
->mac_type
== e1000_82546
) {
1572 return ((begin
^ (end
- 1)) >> 16) != 0 ? false : true;
1579 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1580 * @adapter: board private structure
1581 * @txdr: tx descriptor ring (for a specific queue) to setup
1583 * Return 0 on success, negative on failure
1586 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1587 struct e1000_tx_ring
*txdr
)
1589 struct pci_dev
*pdev
= adapter
->pdev
;
1592 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1593 txdr
->buffer_info
= vmalloc(size
);
1594 if (!txdr
->buffer_info
) {
1596 "Unable to allocate memory for the transmit descriptor ring\n");
1599 memset(txdr
->buffer_info
, 0, size
);
1601 /* round up to nearest 4K */
1603 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1604 txdr
->size
= ALIGN(txdr
->size
, 4096);
1606 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1609 vfree(txdr
->buffer_info
);
1611 "Unable to allocate memory for the transmit descriptor ring\n");
1615 /* Fix for errata 23, can't cross 64kB boundary */
1616 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1617 void *olddesc
= txdr
->desc
;
1618 dma_addr_t olddma
= txdr
->dma
;
1619 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1620 "at %p\n", txdr
->size
, txdr
->desc
);
1621 /* Try again, without freeing the previous */
1622 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1623 /* Failed allocation, critical failure */
1625 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1626 goto setup_tx_desc_die
;
1629 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1631 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1633 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1635 "Unable to allocate aligned memory "
1636 "for the transmit descriptor ring\n");
1637 vfree(txdr
->buffer_info
);
1640 /* Free old allocation, new allocation was successful */
1641 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1644 memset(txdr
->desc
, 0, txdr
->size
);
1646 txdr
->next_to_use
= 0;
1647 txdr
->next_to_clean
= 0;
1648 spin_lock_init(&txdr
->tx_lock
);
1654 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1655 * (Descriptors) for all queues
1656 * @adapter: board private structure
1658 * Return 0 on success, negative on failure
1661 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1665 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1666 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1669 "Allocation for Tx Queue %u failed\n", i
);
1670 for (i
-- ; i
>= 0; i
--)
1671 e1000_free_tx_resources(adapter
,
1672 &adapter
->tx_ring
[i
]);
1681 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1682 * @adapter: board private structure
1684 * Configure the Tx unit of the MAC after a reset.
1687 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1690 struct e1000_hw
*hw
= &adapter
->hw
;
1691 u32 tdlen
, tctl
, tipg
, tarc
;
1694 /* Setup the HW Tx Head and Tail descriptor pointers */
1696 switch (adapter
->num_tx_queues
) {
1699 tdba
= adapter
->tx_ring
[0].dma
;
1700 tdlen
= adapter
->tx_ring
[0].count
*
1701 sizeof(struct e1000_tx_desc
);
1703 ew32(TDBAH
, (tdba
>> 32));
1704 ew32(TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1707 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1708 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1712 /* Set the default values for the Tx Inter Packet Gap timer */
1713 if (hw
->mac_type
<= e1000_82547_rev_2
&&
1714 (hw
->media_type
== e1000_media_type_fiber
||
1715 hw
->media_type
== e1000_media_type_internal_serdes
))
1716 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1718 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1720 switch (hw
->mac_type
) {
1721 case e1000_82542_rev2_0
:
1722 case e1000_82542_rev2_1
:
1723 tipg
= DEFAULT_82542_TIPG_IPGT
;
1724 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1725 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1727 case e1000_80003es2lan
:
1728 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1729 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1732 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1733 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1736 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1737 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1740 /* Set the Tx Interrupt Delay register */
1742 ew32(TIDV
, adapter
->tx_int_delay
);
1743 if (hw
->mac_type
>= e1000_82540
)
1744 ew32(TADV
, adapter
->tx_abs_int_delay
);
1746 /* Program the Transmit Control Register */
1749 tctl
&= ~E1000_TCTL_CT
;
1750 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1751 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1753 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1755 /* set the speed mode bit, we'll clear it if we're not at
1756 * gigabit link later */
1759 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1768 e1000_config_collision_dist(hw
);
1770 /* Setup Transmit Descriptor Settings for eop descriptor */
1771 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1773 /* only set IDE if we are delaying interrupts using the timers */
1774 if (adapter
->tx_int_delay
)
1775 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1777 if (hw
->mac_type
< e1000_82543
)
1778 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1780 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1782 /* Cache if we're 82544 running in PCI-X because we'll
1783 * need this to apply a workaround later in the send path. */
1784 if (hw
->mac_type
== e1000_82544
&&
1785 hw
->bus_type
== e1000_bus_type_pcix
)
1786 adapter
->pcix_82544
= 1;
1793 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1794 * @adapter: board private structure
1795 * @rxdr: rx descriptor ring (for a specific queue) to setup
1797 * Returns 0 on success, negative on failure
1800 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1801 struct e1000_rx_ring
*rxdr
)
1803 struct e1000_hw
*hw
= &adapter
->hw
;
1804 struct pci_dev
*pdev
= adapter
->pdev
;
1807 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1808 rxdr
->buffer_info
= vmalloc(size
);
1809 if (!rxdr
->buffer_info
) {
1811 "Unable to allocate memory for the receive descriptor ring\n");
1814 memset(rxdr
->buffer_info
, 0, size
);
1816 if (hw
->mac_type
<= e1000_82547_rev_2
)
1817 desc_len
= sizeof(struct e1000_rx_desc
);
1819 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1821 /* Round up to nearest 4K */
1823 rxdr
->size
= rxdr
->count
* desc_len
;
1824 rxdr
->size
= ALIGN(rxdr
->size
, 4096);
1826 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1830 "Unable to allocate memory for the receive descriptor ring\n");
1832 vfree(rxdr
->buffer_info
);
1836 /* Fix for errata 23, can't cross 64kB boundary */
1837 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1838 void *olddesc
= rxdr
->desc
;
1839 dma_addr_t olddma
= rxdr
->dma
;
1840 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1841 "at %p\n", rxdr
->size
, rxdr
->desc
);
1842 /* Try again, without freeing the previous */
1843 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1844 /* Failed allocation, critical failure */
1846 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1848 "Unable to allocate memory "
1849 "for the receive descriptor ring\n");
1850 goto setup_rx_desc_die
;
1853 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1855 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1857 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1859 "Unable to allocate aligned memory "
1860 "for the receive descriptor ring\n");
1861 goto setup_rx_desc_die
;
1863 /* Free old allocation, new allocation was successful */
1864 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1867 memset(rxdr
->desc
, 0, rxdr
->size
);
1869 rxdr
->next_to_clean
= 0;
1870 rxdr
->next_to_use
= 0;
1876 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1877 * (Descriptors) for all queues
1878 * @adapter: board private structure
1880 * Return 0 on success, negative on failure
1883 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1887 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1888 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1891 "Allocation for Rx Queue %u failed\n", i
);
1892 for (i
-- ; i
>= 0; i
--)
1893 e1000_free_rx_resources(adapter
,
1894 &adapter
->rx_ring
[i
]);
1903 * e1000_setup_rctl - configure the receive control registers
1904 * @adapter: Board private structure
1906 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1907 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1908 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1910 struct e1000_hw
*hw
= &adapter
->hw
;
1915 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1917 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1918 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1919 (hw
->mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1921 if (hw
->tbi_compatibility_on
== 1)
1922 rctl
|= E1000_RCTL_SBP
;
1924 rctl
&= ~E1000_RCTL_SBP
;
1926 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1927 rctl
&= ~E1000_RCTL_LPE
;
1929 rctl
|= E1000_RCTL_LPE
;
1931 /* Setup buffer sizes */
1932 rctl
&= ~E1000_RCTL_SZ_4096
;
1933 rctl
|= E1000_RCTL_BSEX
;
1934 switch (adapter
->rx_buffer_len
) {
1935 case E1000_RXBUFFER_256
:
1936 rctl
|= E1000_RCTL_SZ_256
;
1937 rctl
&= ~E1000_RCTL_BSEX
;
1939 case E1000_RXBUFFER_512
:
1940 rctl
|= E1000_RCTL_SZ_512
;
1941 rctl
&= ~E1000_RCTL_BSEX
;
1943 case E1000_RXBUFFER_1024
:
1944 rctl
|= E1000_RCTL_SZ_1024
;
1945 rctl
&= ~E1000_RCTL_BSEX
;
1947 case E1000_RXBUFFER_2048
:
1949 rctl
|= E1000_RCTL_SZ_2048
;
1950 rctl
&= ~E1000_RCTL_BSEX
;
1952 case E1000_RXBUFFER_4096
:
1953 rctl
|= E1000_RCTL_SZ_4096
;
1955 case E1000_RXBUFFER_8192
:
1956 rctl
|= E1000_RCTL_SZ_8192
;
1958 case E1000_RXBUFFER_16384
:
1959 rctl
|= E1000_RCTL_SZ_16384
;
1967 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1968 * @adapter: board private structure
1970 * Configure the Rx unit of the MAC after a reset.
1973 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
1976 struct e1000_hw
*hw
= &adapter
->hw
;
1977 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
1979 rdlen
= adapter
->rx_ring
[0].count
*
1980 sizeof(struct e1000_rx_desc
);
1981 adapter
->clean_rx
= e1000_clean_rx_irq
;
1982 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1984 /* disable receives while setting up the descriptors */
1986 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1988 /* set the Receive Delay Timer Register */
1989 ew32(RDTR
, adapter
->rx_int_delay
);
1991 if (hw
->mac_type
>= e1000_82540
) {
1992 ew32(RADV
, adapter
->rx_abs_int_delay
);
1993 if (adapter
->itr_setting
!= 0)
1994 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
1997 if (hw
->mac_type
>= e1000_82571
) {
1998 ctrl_ext
= er32(CTRL_EXT
);
1999 /* Reset delay timers after every interrupt */
2000 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2001 /* Auto-Mask interrupts upon ICR access */
2002 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2003 ew32(IAM
, 0xffffffff);
2004 ew32(CTRL_EXT
, ctrl_ext
);
2005 E1000_WRITE_FLUSH();
2008 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2009 * the Base and Length of the Rx Descriptor Ring */
2010 switch (adapter
->num_rx_queues
) {
2013 rdba
= adapter
->rx_ring
[0].dma
;
2015 ew32(RDBAH
, (rdba
>> 32));
2016 ew32(RDBAL
, (rdba
& 0x00000000ffffffffULL
));
2019 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
2020 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
2024 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2025 if (hw
->mac_type
>= e1000_82543
) {
2026 rxcsum
= er32(RXCSUM
);
2027 if (adapter
->rx_csum
)
2028 rxcsum
|= E1000_RXCSUM_TUOFL
;
2030 /* don't need to clear IPPCSE as it defaults to 0 */
2031 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2032 ew32(RXCSUM
, rxcsum
);
2035 /* Enable Receives */
2040 * e1000_free_tx_resources - Free Tx Resources per Queue
2041 * @adapter: board private structure
2042 * @tx_ring: Tx descriptor ring for a specific queue
2044 * Free all transmit software resources
2047 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2048 struct e1000_tx_ring
*tx_ring
)
2050 struct pci_dev
*pdev
= adapter
->pdev
;
2052 e1000_clean_tx_ring(adapter
, tx_ring
);
2054 vfree(tx_ring
->buffer_info
);
2055 tx_ring
->buffer_info
= NULL
;
2057 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2059 tx_ring
->desc
= NULL
;
2063 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2064 * @adapter: board private structure
2066 * Free all transmit software resources
2069 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2073 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2074 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2077 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2078 struct e1000_buffer
*buffer_info
)
2080 if (buffer_info
->dma
) {
2081 pci_unmap_page(adapter
->pdev
,
2083 buffer_info
->length
,
2085 buffer_info
->dma
= 0;
2087 if (buffer_info
->skb
) {
2088 dev_kfree_skb_any(buffer_info
->skb
);
2089 buffer_info
->skb
= NULL
;
2091 /* buffer_info must be completely set up in the transmit path */
2095 * e1000_clean_tx_ring - Free Tx Buffers
2096 * @adapter: board private structure
2097 * @tx_ring: ring to be cleaned
2100 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2101 struct e1000_tx_ring
*tx_ring
)
2103 struct e1000_hw
*hw
= &adapter
->hw
;
2104 struct e1000_buffer
*buffer_info
;
2108 /* Free all the Tx ring sk_buffs */
2110 for (i
= 0; i
< tx_ring
->count
; i
++) {
2111 buffer_info
= &tx_ring
->buffer_info
[i
];
2112 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2115 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2116 memset(tx_ring
->buffer_info
, 0, size
);
2118 /* Zero out the descriptor ring */
2120 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2122 tx_ring
->next_to_use
= 0;
2123 tx_ring
->next_to_clean
= 0;
2124 tx_ring
->last_tx_tso
= 0;
2126 writel(0, hw
->hw_addr
+ tx_ring
->tdh
);
2127 writel(0, hw
->hw_addr
+ tx_ring
->tdt
);
2131 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2132 * @adapter: board private structure
2135 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2139 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2140 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2144 * e1000_free_rx_resources - Free Rx Resources
2145 * @adapter: board private structure
2146 * @rx_ring: ring to clean the resources from
2148 * Free all receive software resources
2151 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2152 struct e1000_rx_ring
*rx_ring
)
2154 struct pci_dev
*pdev
= adapter
->pdev
;
2156 e1000_clean_rx_ring(adapter
, rx_ring
);
2158 vfree(rx_ring
->buffer_info
);
2159 rx_ring
->buffer_info
= NULL
;
2161 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2163 rx_ring
->desc
= NULL
;
2167 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2168 * @adapter: board private structure
2170 * Free all receive software resources
2173 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2177 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2178 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2182 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2183 * @adapter: board private structure
2184 * @rx_ring: ring to free buffers from
2187 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2188 struct e1000_rx_ring
*rx_ring
)
2190 struct e1000_hw
*hw
= &adapter
->hw
;
2191 struct e1000_buffer
*buffer_info
;
2192 struct pci_dev
*pdev
= adapter
->pdev
;
2196 /* Free all the Rx ring sk_buffs */
2197 for (i
= 0; i
< rx_ring
->count
; i
++) {
2198 buffer_info
= &rx_ring
->buffer_info
[i
];
2199 if (buffer_info
->skb
) {
2200 pci_unmap_single(pdev
,
2202 buffer_info
->length
,
2203 PCI_DMA_FROMDEVICE
);
2205 dev_kfree_skb(buffer_info
->skb
);
2206 buffer_info
->skb
= NULL
;
2210 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2211 memset(rx_ring
->buffer_info
, 0, size
);
2213 /* Zero out the descriptor ring */
2215 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2217 rx_ring
->next_to_clean
= 0;
2218 rx_ring
->next_to_use
= 0;
2220 writel(0, hw
->hw_addr
+ rx_ring
->rdh
);
2221 writel(0, hw
->hw_addr
+ rx_ring
->rdt
);
2225 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2226 * @adapter: board private structure
2229 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2233 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2234 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2237 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2238 * and memory write and invalidate disabled for certain operations
2240 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2242 struct e1000_hw
*hw
= &adapter
->hw
;
2243 struct net_device
*netdev
= adapter
->netdev
;
2246 e1000_pci_clear_mwi(hw
);
2249 rctl
|= E1000_RCTL_RST
;
2251 E1000_WRITE_FLUSH();
2254 if (netif_running(netdev
))
2255 e1000_clean_all_rx_rings(adapter
);
2258 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2260 struct e1000_hw
*hw
= &adapter
->hw
;
2261 struct net_device
*netdev
= adapter
->netdev
;
2265 rctl
&= ~E1000_RCTL_RST
;
2267 E1000_WRITE_FLUSH();
2270 if (hw
->pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2271 e1000_pci_set_mwi(hw
);
2273 if (netif_running(netdev
)) {
2274 /* No need to loop, because 82542 supports only 1 queue */
2275 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2276 e1000_configure_rx(adapter
);
2277 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2282 * e1000_set_mac - Change the Ethernet Address of the NIC
2283 * @netdev: network interface device structure
2284 * @p: pointer to an address structure
2286 * Returns 0 on success, negative on failure
2289 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2291 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2292 struct e1000_hw
*hw
= &adapter
->hw
;
2293 struct sockaddr
*addr
= p
;
2295 if (!is_valid_ether_addr(addr
->sa_data
))
2296 return -EADDRNOTAVAIL
;
2298 /* 82542 2.0 needs to be in reset to write receive address registers */
2300 if (hw
->mac_type
== e1000_82542_rev2_0
)
2301 e1000_enter_82542_rst(adapter
);
2303 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2304 memcpy(hw
->mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2306 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2308 /* With 82571 controllers, LAA may be overwritten (with the default)
2309 * due to controller reset from the other port. */
2310 if (hw
->mac_type
== e1000_82571
) {
2311 /* activate the work around */
2312 hw
->laa_is_present
= 1;
2314 /* Hold a copy of the LAA in RAR[14] This is done so that
2315 * between the time RAR[0] gets clobbered and the time it
2316 * gets fixed (in e1000_watchdog), the actual LAA is in one
2317 * of the RARs and no incoming packets directed to this port
2318 * are dropped. Eventaully the LAA will be in RAR[0] and
2320 e1000_rar_set(hw
, hw
->mac_addr
,
2321 E1000_RAR_ENTRIES
- 1);
2324 if (hw
->mac_type
== e1000_82542_rev2_0
)
2325 e1000_leave_82542_rst(adapter
);
2331 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2332 * @netdev: network interface device structure
2334 * The set_rx_mode entry point is called whenever the unicast or multicast
2335 * address lists or the network interface flags are updated. This routine is
2336 * responsible for configuring the hardware for proper unicast, multicast,
2337 * promiscuous mode, and all-multi behavior.
2340 static void e1000_set_rx_mode(struct net_device
*netdev
)
2342 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2343 struct e1000_hw
*hw
= &adapter
->hw
;
2344 struct dev_addr_list
*uc_ptr
;
2345 struct dev_addr_list
*mc_ptr
;
2348 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2349 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2350 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2351 E1000_NUM_MTA_REGISTERS
;
2353 if (hw
->mac_type
== e1000_ich8lan
)
2354 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2356 /* reserve RAR[14] for LAA over-write work-around */
2357 if (hw
->mac_type
== e1000_82571
)
2360 /* Check for Promiscuous and All Multicast modes */
2364 if (netdev
->flags
& IFF_PROMISC
) {
2365 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2366 rctl
&= ~E1000_RCTL_VFE
;
2368 if (netdev
->flags
& IFF_ALLMULTI
) {
2369 rctl
|= E1000_RCTL_MPE
;
2371 rctl
&= ~E1000_RCTL_MPE
;
2373 if (adapter
->hw
.mac_type
!= e1000_ich8lan
)
2374 rctl
|= E1000_RCTL_VFE
;
2378 if (netdev
->uc_count
> rar_entries
- 1) {
2379 rctl
|= E1000_RCTL_UPE
;
2380 } else if (!(netdev
->flags
& IFF_PROMISC
)) {
2381 rctl
&= ~E1000_RCTL_UPE
;
2382 uc_ptr
= netdev
->uc_list
;
2387 /* 82542 2.0 needs to be in reset to write receive address registers */
2389 if (hw
->mac_type
== e1000_82542_rev2_0
)
2390 e1000_enter_82542_rst(adapter
);
2392 /* load the first 14 addresses into the exact filters 1-14. Unicast
2393 * addresses take precedence to avoid disabling unicast filtering
2396 * RAR 0 is used for the station MAC adddress
2397 * if there are not 14 addresses, go ahead and clear the filters
2398 * -- with 82571 controllers only 0-13 entries are filled here
2400 mc_ptr
= netdev
->mc_list
;
2402 for (i
= 1; i
< rar_entries
; i
++) {
2404 e1000_rar_set(hw
, uc_ptr
->da_addr
, i
);
2405 uc_ptr
= uc_ptr
->next
;
2406 } else if (mc_ptr
) {
2407 e1000_rar_set(hw
, mc_ptr
->da_addr
, i
);
2408 mc_ptr
= mc_ptr
->next
;
2410 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2411 E1000_WRITE_FLUSH();
2412 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2413 E1000_WRITE_FLUSH();
2416 WARN_ON(uc_ptr
!= NULL
);
2418 /* clear the old settings from the multicast hash table */
2420 for (i
= 0; i
< mta_reg_count
; i
++) {
2421 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2422 E1000_WRITE_FLUSH();
2425 /* load any remaining addresses into the hash table */
2427 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2428 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->da_addr
);
2429 e1000_mta_set(hw
, hash_value
);
2432 if (hw
->mac_type
== e1000_82542_rev2_0
)
2433 e1000_leave_82542_rst(adapter
);
2436 /* Need to wait a few seconds after link up to get diagnostic information from
2439 static void e1000_update_phy_info(unsigned long data
)
2441 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2442 struct e1000_hw
*hw
= &adapter
->hw
;
2443 e1000_phy_get_info(hw
, &adapter
->phy_info
);
2447 * e1000_82547_tx_fifo_stall - Timer Call-back
2448 * @data: pointer to adapter cast into an unsigned long
2451 static void e1000_82547_tx_fifo_stall(unsigned long data
)
2453 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2454 struct e1000_hw
*hw
= &adapter
->hw
;
2455 struct net_device
*netdev
= adapter
->netdev
;
2458 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2459 if ((er32(TDT
) == er32(TDH
)) &&
2460 (er32(TDFT
) == er32(TDFH
)) &&
2461 (er32(TDFTS
) == er32(TDFHS
))) {
2463 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
2464 ew32(TDFT
, adapter
->tx_head_addr
);
2465 ew32(TDFH
, adapter
->tx_head_addr
);
2466 ew32(TDFTS
, adapter
->tx_head_addr
);
2467 ew32(TDFHS
, adapter
->tx_head_addr
);
2469 E1000_WRITE_FLUSH();
2471 adapter
->tx_fifo_head
= 0;
2472 atomic_set(&adapter
->tx_fifo_stall
, 0);
2473 netif_wake_queue(netdev
);
2475 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2481 * e1000_watchdog - Timer Call-back
2482 * @data: pointer to adapter cast into an unsigned long
2484 static void e1000_watchdog(unsigned long data
)
2486 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2487 struct e1000_hw
*hw
= &adapter
->hw
;
2488 struct net_device
*netdev
= adapter
->netdev
;
2489 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2493 ret_val
= e1000_check_for_link(hw
);
2494 if ((ret_val
== E1000_ERR_PHY
) &&
2495 (hw
->phy_type
== e1000_phy_igp_3
) &&
2496 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2497 /* See e1000_kumeran_lock_loss_workaround() */
2499 "Gigabit has been disabled, downgrading speed\n");
2502 if (hw
->mac_type
== e1000_82573
) {
2503 e1000_enable_tx_pkt_filtering(hw
);
2504 if (adapter
->mng_vlan_id
!= hw
->mng_cookie
.vlan_id
)
2505 e1000_update_mng_vlan(adapter
);
2508 if ((hw
->media_type
== e1000_media_type_internal_serdes
) &&
2509 !(er32(TXCW
) & E1000_TXCW_ANE
))
2510 link
= !hw
->serdes_link_down
;
2512 link
= er32(STATUS
) & E1000_STATUS_LU
;
2515 if (!netif_carrier_ok(netdev
)) {
2518 e1000_get_speed_and_duplex(hw
,
2519 &adapter
->link_speed
,
2520 &adapter
->link_duplex
);
2523 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s, "
2524 "Flow Control: %s\n",
2525 adapter
->link_speed
,
2526 adapter
->link_duplex
== FULL_DUPLEX
?
2527 "Full Duplex" : "Half Duplex",
2528 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2529 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2530 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2531 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2533 /* tweak tx_queue_len according to speed/duplex
2534 * and adjust the timeout factor */
2535 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2536 adapter
->tx_timeout_factor
= 1;
2537 switch (adapter
->link_speed
) {
2540 netdev
->tx_queue_len
= 10;
2541 adapter
->tx_timeout_factor
= 8;
2545 netdev
->tx_queue_len
= 100;
2546 /* maybe add some timeout factor ? */
2550 if ((hw
->mac_type
== e1000_82571
||
2551 hw
->mac_type
== e1000_82572
) &&
2554 tarc0
= er32(TARC0
);
2555 tarc0
&= ~(1 << 21);
2559 /* disable TSO for pcie and 10/100 speeds, to avoid
2560 * some hardware issues */
2561 if (!adapter
->tso_force
&&
2562 hw
->bus_type
== e1000_bus_type_pci_express
){
2563 switch (adapter
->link_speed
) {
2567 "10/100 speed: disabling TSO\n");
2568 netdev
->features
&= ~NETIF_F_TSO
;
2569 netdev
->features
&= ~NETIF_F_TSO6
;
2572 netdev
->features
|= NETIF_F_TSO
;
2573 netdev
->features
|= NETIF_F_TSO6
;
2581 /* enable transmits in the hardware, need to do this
2582 * after setting TARC0 */
2584 tctl
|= E1000_TCTL_EN
;
2587 netif_carrier_on(netdev
);
2588 netif_wake_queue(netdev
);
2589 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2590 adapter
->smartspeed
= 0;
2592 /* make sure the receive unit is started */
2593 if (hw
->rx_needs_kicking
) {
2594 u32 rctl
= er32(RCTL
);
2595 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
2599 if (netif_carrier_ok(netdev
)) {
2600 adapter
->link_speed
= 0;
2601 adapter
->link_duplex
= 0;
2602 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2603 netif_carrier_off(netdev
);
2604 netif_stop_queue(netdev
);
2605 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2607 /* 80003ES2LAN workaround--
2608 * For packet buffer work-around on link down event;
2609 * disable receives in the ISR and
2610 * reset device here in the watchdog
2612 if (hw
->mac_type
== e1000_80003es2lan
)
2614 schedule_work(&adapter
->reset_task
);
2617 e1000_smartspeed(adapter
);
2620 e1000_update_stats(adapter
);
2622 hw
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2623 adapter
->tpt_old
= adapter
->stats
.tpt
;
2624 hw
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2625 adapter
->colc_old
= adapter
->stats
.colc
;
2627 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2628 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2629 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2630 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2632 e1000_update_adaptive(hw
);
2634 if (!netif_carrier_ok(netdev
)) {
2635 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2636 /* We've lost link, so the controller stops DMA,
2637 * but we've got queued Tx work that's never going
2638 * to get done, so reset controller to flush Tx.
2639 * (Do the reset outside of interrupt context). */
2640 adapter
->tx_timeout_count
++;
2641 schedule_work(&adapter
->reset_task
);
2645 /* Cause software interrupt to ensure rx ring is cleaned */
2646 ew32(ICS
, E1000_ICS_RXDMT0
);
2648 /* Force detection of hung controller every watchdog period */
2649 adapter
->detect_tx_hung
= true;
2651 /* With 82571 controllers, LAA may be overwritten due to controller
2652 * reset from the other port. Set the appropriate LAA in RAR[0] */
2653 if (hw
->mac_type
== e1000_82571
&& hw
->laa_is_present
)
2654 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2656 /* Reset the timer */
2657 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2660 enum latency_range
{
2664 latency_invalid
= 255
2668 * e1000_update_itr - update the dynamic ITR value based on statistics
2669 * Stores a new ITR value based on packets and byte
2670 * counts during the last interrupt. The advantage of per interrupt
2671 * computation is faster updates and more accurate ITR for the current
2672 * traffic pattern. Constants in this function were computed
2673 * based on theoretical maximum wire speed and thresholds were set based
2674 * on testing data as well as attempting to minimize response time
2675 * while increasing bulk throughput.
2676 * this functionality is controlled by the InterruptThrottleRate module
2677 * parameter (see e1000_param.c)
2678 * @adapter: pointer to adapter
2679 * @itr_setting: current adapter->itr
2680 * @packets: the number of packets during this measurement interval
2681 * @bytes: the number of bytes during this measurement interval
2683 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2684 u16 itr_setting
, int packets
, int bytes
)
2686 unsigned int retval
= itr_setting
;
2687 struct e1000_hw
*hw
= &adapter
->hw
;
2689 if (unlikely(hw
->mac_type
< e1000_82540
))
2690 goto update_itr_done
;
2693 goto update_itr_done
;
2695 switch (itr_setting
) {
2696 case lowest_latency
:
2697 /* jumbo frames get bulk treatment*/
2698 if (bytes
/packets
> 8000)
2699 retval
= bulk_latency
;
2700 else if ((packets
< 5) && (bytes
> 512))
2701 retval
= low_latency
;
2703 case low_latency
: /* 50 usec aka 20000 ints/s */
2704 if (bytes
> 10000) {
2705 /* jumbo frames need bulk latency setting */
2706 if (bytes
/packets
> 8000)
2707 retval
= bulk_latency
;
2708 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2709 retval
= bulk_latency
;
2710 else if ((packets
> 35))
2711 retval
= lowest_latency
;
2712 } else if (bytes
/packets
> 2000)
2713 retval
= bulk_latency
;
2714 else if (packets
<= 2 && bytes
< 512)
2715 retval
= lowest_latency
;
2717 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2718 if (bytes
> 25000) {
2720 retval
= low_latency
;
2721 } else if (bytes
< 6000) {
2722 retval
= low_latency
;
2731 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2733 struct e1000_hw
*hw
= &adapter
->hw
;
2735 u32 new_itr
= adapter
->itr
;
2737 if (unlikely(hw
->mac_type
< e1000_82540
))
2740 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2741 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2747 adapter
->tx_itr
= e1000_update_itr(adapter
,
2749 adapter
->total_tx_packets
,
2750 adapter
->total_tx_bytes
);
2751 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2752 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2753 adapter
->tx_itr
= low_latency
;
2755 adapter
->rx_itr
= e1000_update_itr(adapter
,
2757 adapter
->total_rx_packets
,
2758 adapter
->total_rx_bytes
);
2759 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2760 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2761 adapter
->rx_itr
= low_latency
;
2763 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2765 switch (current_itr
) {
2766 /* counts and packets in update_itr are dependent on these numbers */
2767 case lowest_latency
:
2771 new_itr
= 20000; /* aka hwitr = ~200 */
2781 if (new_itr
!= adapter
->itr
) {
2782 /* this attempts to bias the interrupt rate towards Bulk
2783 * by adding intermediate steps when interrupt rate is
2785 new_itr
= new_itr
> adapter
->itr
?
2786 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2788 adapter
->itr
= new_itr
;
2789 ew32(ITR
, 1000000000 / (new_itr
* 256));
2795 #define E1000_TX_FLAGS_CSUM 0x00000001
2796 #define E1000_TX_FLAGS_VLAN 0x00000002
2797 #define E1000_TX_FLAGS_TSO 0x00000004
2798 #define E1000_TX_FLAGS_IPV4 0x00000008
2799 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2800 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2802 static int e1000_tso(struct e1000_adapter
*adapter
,
2803 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2805 struct e1000_context_desc
*context_desc
;
2806 struct e1000_buffer
*buffer_info
;
2809 u16 ipcse
= 0, tucse
, mss
;
2810 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2813 if (skb_is_gso(skb
)) {
2814 if (skb_header_cloned(skb
)) {
2815 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2820 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2821 mss
= skb_shinfo(skb
)->gso_size
;
2822 if (skb
->protocol
== htons(ETH_P_IP
)) {
2823 struct iphdr
*iph
= ip_hdr(skb
);
2826 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2830 cmd_length
= E1000_TXD_CMD_IP
;
2831 ipcse
= skb_transport_offset(skb
) - 1;
2832 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2833 ipv6_hdr(skb
)->payload_len
= 0;
2834 tcp_hdr(skb
)->check
=
2835 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2836 &ipv6_hdr(skb
)->daddr
,
2840 ipcss
= skb_network_offset(skb
);
2841 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
2842 tucss
= skb_transport_offset(skb
);
2843 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
2846 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2847 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2849 i
= tx_ring
->next_to_use
;
2850 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2851 buffer_info
= &tx_ring
->buffer_info
[i
];
2853 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2854 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2855 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2856 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2857 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2858 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2859 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2860 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2861 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2863 buffer_info
->time_stamp
= jiffies
;
2864 buffer_info
->next_to_watch
= i
;
2866 if (++i
== tx_ring
->count
) i
= 0;
2867 tx_ring
->next_to_use
= i
;
2874 static bool e1000_tx_csum(struct e1000_adapter
*adapter
,
2875 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2877 struct e1000_context_desc
*context_desc
;
2878 struct e1000_buffer
*buffer_info
;
2881 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
2883 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2886 switch (skb
->protocol
) {
2887 case __constant_htons(ETH_P_IP
):
2888 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2889 cmd_len
|= E1000_TXD_CMD_TCP
;
2891 case __constant_htons(ETH_P_IPV6
):
2892 /* XXX not handling all IPV6 headers */
2893 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2894 cmd_len
|= E1000_TXD_CMD_TCP
;
2897 if (unlikely(net_ratelimit()))
2898 DPRINTK(DRV
, WARNING
,
2899 "checksum_partial proto=%x!\n", skb
->protocol
);
2903 css
= skb_transport_offset(skb
);
2905 i
= tx_ring
->next_to_use
;
2906 buffer_info
= &tx_ring
->buffer_info
[i
];
2907 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2909 context_desc
->lower_setup
.ip_config
= 0;
2910 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2911 context_desc
->upper_setup
.tcp_fields
.tucso
=
2912 css
+ skb
->csum_offset
;
2913 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2914 context_desc
->tcp_seg_setup
.data
= 0;
2915 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
2917 buffer_info
->time_stamp
= jiffies
;
2918 buffer_info
->next_to_watch
= i
;
2920 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2921 tx_ring
->next_to_use
= i
;
2926 #define E1000_MAX_TXD_PWR 12
2927 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2929 static int e1000_tx_map(struct e1000_adapter
*adapter
,
2930 struct e1000_tx_ring
*tx_ring
,
2931 struct sk_buff
*skb
, unsigned int first
,
2932 unsigned int max_per_txd
, unsigned int nr_frags
,
2935 struct e1000_hw
*hw
= &adapter
->hw
;
2936 struct e1000_buffer
*buffer_info
;
2937 unsigned int len
= skb
->len
;
2938 unsigned int offset
= 0, size
, count
= 0, i
;
2940 len
-= skb
->data_len
;
2942 i
= tx_ring
->next_to_use
;
2945 buffer_info
= &tx_ring
->buffer_info
[i
];
2946 size
= min(len
, max_per_txd
);
2947 /* Workaround for Controller erratum --
2948 * descriptor for non-tso packet in a linear SKB that follows a
2949 * tso gets written back prematurely before the data is fully
2950 * DMA'd to the controller */
2951 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2953 tx_ring
->last_tx_tso
= 0;
2957 /* Workaround for premature desc write-backs
2958 * in TSO mode. Append 4-byte sentinel desc */
2959 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2961 /* work-around for errata 10 and it applies
2962 * to all controllers in PCI-X mode
2963 * The fix is to make sure that the first descriptor of a
2964 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2966 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
2967 (size
> 2015) && count
== 0))
2970 /* Workaround for potential 82544 hang in PCI-X. Avoid
2971 * terminating buffers within evenly-aligned dwords. */
2972 if (unlikely(adapter
->pcix_82544
&&
2973 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2977 buffer_info
->length
= size
;
2979 pci_map_single(adapter
->pdev
,
2983 buffer_info
->time_stamp
= jiffies
;
2984 buffer_info
->next_to_watch
= i
;
2989 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2992 for (f
= 0; f
< nr_frags
; f
++) {
2993 struct skb_frag_struct
*frag
;
2995 frag
= &skb_shinfo(skb
)->frags
[f
];
2997 offset
= frag
->page_offset
;
3000 buffer_info
= &tx_ring
->buffer_info
[i
];
3001 size
= min(len
, max_per_txd
);
3002 /* Workaround for premature desc write-backs
3003 * in TSO mode. Append 4-byte sentinel desc */
3004 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
3006 /* Workaround for potential 82544 hang in PCI-X.
3007 * Avoid terminating buffers within evenly-aligned
3009 if (unlikely(adapter
->pcix_82544
&&
3010 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
3014 buffer_info
->length
= size
;
3016 pci_map_page(adapter
->pdev
,
3021 buffer_info
->time_stamp
= jiffies
;
3022 buffer_info
->next_to_watch
= i
;
3027 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3031 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
3032 tx_ring
->buffer_info
[i
].skb
= skb
;
3033 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3038 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3039 struct e1000_tx_ring
*tx_ring
, int tx_flags
,
3042 struct e1000_hw
*hw
= &adapter
->hw
;
3043 struct e1000_tx_desc
*tx_desc
= NULL
;
3044 struct e1000_buffer
*buffer_info
;
3045 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3048 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3049 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3051 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3053 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3054 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3057 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3058 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3059 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3062 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3063 txd_lower
|= E1000_TXD_CMD_VLE
;
3064 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3067 i
= tx_ring
->next_to_use
;
3070 buffer_info
= &tx_ring
->buffer_info
[i
];
3071 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3072 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3073 tx_desc
->lower
.data
=
3074 cpu_to_le32(txd_lower
| buffer_info
->length
);
3075 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3076 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3079 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3081 /* Force memory writes to complete before letting h/w
3082 * know there are new descriptors to fetch. (Only
3083 * applicable for weak-ordered memory model archs,
3084 * such as IA-64). */
3087 tx_ring
->next_to_use
= i
;
3088 writel(i
, hw
->hw_addr
+ tx_ring
->tdt
);
3089 /* we need this if more than one processor can write to our tail
3090 * at a time, it syncronizes IO on IA64/Altix systems */
3095 * 82547 workaround to avoid controller hang in half-duplex environment.
3096 * The workaround is to avoid queuing a large packet that would span
3097 * the internal Tx FIFO ring boundary by notifying the stack to resend
3098 * the packet at a later time. This gives the Tx FIFO an opportunity to
3099 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3100 * to the beginning of the Tx FIFO.
3103 #define E1000_FIFO_HDR 0x10
3104 #define E1000_82547_PAD_LEN 0x3E0
3106 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
3107 struct sk_buff
*skb
)
3109 u32 fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3110 u32 skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3112 skb_fifo_len
= ALIGN(skb_fifo_len
, E1000_FIFO_HDR
);
3114 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3115 goto no_fifo_stall_required
;
3117 if (atomic_read(&adapter
->tx_fifo_stall
))
3120 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3121 atomic_set(&adapter
->tx_fifo_stall
, 1);
3125 no_fifo_stall_required
:
3126 adapter
->tx_fifo_head
+= skb_fifo_len
;
3127 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3128 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3132 #define MINIMUM_DHCP_PACKET_SIZE 282
3133 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3134 struct sk_buff
*skb
)
3136 struct e1000_hw
*hw
= &adapter
->hw
;
3138 if (vlan_tx_tag_present(skb
)) {
3139 if (!((vlan_tx_tag_get(skb
) == hw
->mng_cookie
.vlan_id
) &&
3140 ( hw
->mng_cookie
.status
&
3141 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3144 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3145 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
3146 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3147 const struct iphdr
*ip
=
3148 (struct iphdr
*)((u8
*)skb
->data
+14);
3149 if (IPPROTO_UDP
== ip
->protocol
) {
3150 struct udphdr
*udp
=
3151 (struct udphdr
*)((u8
*)ip
+
3153 if (ntohs(udp
->dest
) == 67) {
3154 offset
= (u8
*)udp
+ 8 - skb
->data
;
3155 length
= skb
->len
- offset
;
3157 return e1000_mng_write_dhcp_info(hw
,
3167 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3169 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3170 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3172 netif_stop_queue(netdev
);
3173 /* Herbert's original patch had:
3174 * smp_mb__after_netif_stop_queue();
3175 * but since that doesn't exist yet, just open code it. */
3178 /* We need to check again in a case another CPU has just
3179 * made room available. */
3180 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3184 netif_start_queue(netdev
);
3185 ++adapter
->restart_queue
;
3189 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3190 struct e1000_tx_ring
*tx_ring
, int size
)
3192 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3194 return __e1000_maybe_stop_tx(netdev
, size
);
3197 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3198 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3200 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3201 struct e1000_hw
*hw
= &adapter
->hw
;
3202 struct e1000_tx_ring
*tx_ring
;
3203 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3204 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3205 unsigned int tx_flags
= 0;
3206 unsigned int len
= skb
->len
- skb
->data_len
;
3207 unsigned long flags
;
3208 unsigned int nr_frags
;
3214 /* This goes back to the question of how to logically map a tx queue
3215 * to a flow. Right now, performance is impacted slightly negatively
3216 * if using multiple tx queues. If the stack breaks away from a
3217 * single qdisc implementation, we can look at this again. */
3218 tx_ring
= adapter
->tx_ring
;
3220 if (unlikely(skb
->len
<= 0)) {
3221 dev_kfree_skb_any(skb
);
3222 return NETDEV_TX_OK
;
3225 /* 82571 and newer doesn't need the workaround that limited descriptor
3227 if (hw
->mac_type
>= e1000_82571
)
3230 mss
= skb_shinfo(skb
)->gso_size
;
3231 /* The controller does a simple calculation to
3232 * make sure there is enough room in the FIFO before
3233 * initiating the DMA for each buffer. The calc is:
3234 * 4 = ceil(buffer len/mss). To make sure we don't
3235 * overrun the FIFO, adjust the max buffer len if mss
3239 max_per_txd
= min(mss
<< 2, max_per_txd
);
3240 max_txd_pwr
= fls(max_per_txd
) - 1;
3242 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3243 * points to just header, pull a few bytes of payload from
3244 * frags into skb->data */
3245 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3246 if (skb
->data_len
&& hdr_len
== len
) {
3247 switch (hw
->mac_type
) {
3248 unsigned int pull_size
;
3250 /* Make sure we have room to chop off 4 bytes,
3251 * and that the end alignment will work out to
3252 * this hardware's requirements
3253 * NOTE: this is a TSO only workaround
3254 * if end byte alignment not correct move us
3255 * into the next dword */
3256 if ((unsigned long)(skb_tail_pointer(skb
) - 1) & 4)
3263 pull_size
= min((unsigned int)4, skb
->data_len
);
3264 if (!__pskb_pull_tail(skb
, pull_size
)) {
3266 "__pskb_pull_tail failed.\n");
3267 dev_kfree_skb_any(skb
);
3268 return NETDEV_TX_OK
;
3270 len
= skb
->len
- skb
->data_len
;
3279 /* reserve a descriptor for the offload context */
3280 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3284 /* Controller Erratum workaround */
3285 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3288 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3290 if (adapter
->pcix_82544
)
3293 /* work-around for errata 10 and it applies to all controllers
3294 * in PCI-X mode, so add one more descriptor to the count
3296 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
3300 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3301 for (f
= 0; f
< nr_frags
; f
++)
3302 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3304 if (adapter
->pcix_82544
)
3308 if (hw
->tx_pkt_filtering
&&
3309 (hw
->mac_type
== e1000_82573
))
3310 e1000_transfer_dhcp_info(adapter
, skb
);
3312 if (!spin_trylock_irqsave(&tx_ring
->tx_lock
, flags
))
3313 /* Collision - tell upper layer to requeue */
3314 return NETDEV_TX_LOCKED
;
3316 /* need: count + 2 desc gap to keep tail from touching
3317 * head, otherwise try next time */
3318 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3319 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3320 return NETDEV_TX_BUSY
;
3323 if (unlikely(hw
->mac_type
== e1000_82547
)) {
3324 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3325 netif_stop_queue(netdev
);
3326 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3327 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3328 return NETDEV_TX_BUSY
;
3332 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3333 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3334 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3337 first
= tx_ring
->next_to_use
;
3339 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3341 dev_kfree_skb_any(skb
);
3342 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3343 return NETDEV_TX_OK
;
3347 tx_ring
->last_tx_tso
= 1;
3348 tx_flags
|= E1000_TX_FLAGS_TSO
;
3349 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3350 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3352 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3353 * 82571 hardware supports TSO capabilities for IPv6 as well...
3354 * no longer assume, we must. */
3355 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3356 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3358 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3359 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3360 max_per_txd
, nr_frags
, mss
));
3362 netdev
->trans_start
= jiffies
;
3364 /* Make sure there is space in the ring for the next send. */
3365 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3367 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3368 return NETDEV_TX_OK
;
3372 * e1000_tx_timeout - Respond to a Tx Hang
3373 * @netdev: network interface device structure
3376 static void e1000_tx_timeout(struct net_device
*netdev
)
3378 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3380 /* Do the reset outside of interrupt context */
3381 adapter
->tx_timeout_count
++;
3382 schedule_work(&adapter
->reset_task
);
3385 static void e1000_reset_task(struct work_struct
*work
)
3387 struct e1000_adapter
*adapter
=
3388 container_of(work
, struct e1000_adapter
, reset_task
);
3390 e1000_reinit_locked(adapter
);
3394 * e1000_get_stats - Get System Network Statistics
3395 * @netdev: network interface device structure
3397 * Returns the address of the device statistics structure.
3398 * The statistics are actually updated from the timer callback.
3401 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3403 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3405 /* only return the current stats */
3406 return &adapter
->net_stats
;
3410 * e1000_change_mtu - Change the Maximum Transfer Unit
3411 * @netdev: network interface device structure
3412 * @new_mtu: new value for maximum frame size
3414 * Returns 0 on success, negative on failure
3417 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3419 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3420 struct e1000_hw
*hw
= &adapter
->hw
;
3421 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3422 u16 eeprom_data
= 0;
3424 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3425 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3426 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3430 /* Adapter-specific max frame size limits. */
3431 switch (hw
->mac_type
) {
3432 case e1000_undefined
... e1000_82542_rev2_1
:
3434 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3435 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3440 /* Jumbo Frames not supported if:
3441 * - this is not an 82573L device
3442 * - ASPM is enabled in any way (0x1A bits 3:2) */
3443 e1000_read_eeprom(hw
, EEPROM_INIT_3GIO_3
, 1,
3445 if ((hw
->device_id
!= E1000_DEV_ID_82573L
) ||
3446 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3447 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3449 "Jumbo Frames not supported.\n");
3454 /* ERT will be enabled later to enable wire speed receives */
3456 /* fall through to get support */
3459 case e1000_80003es2lan
:
3460 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3461 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3462 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3467 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3471 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3472 * means we reserve 2 more, this pushes us to allocate from the next
3474 * i.e. RXBUFFER_2048 --> size-4096 slab */
3476 if (max_frame
<= E1000_RXBUFFER_256
)
3477 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3478 else if (max_frame
<= E1000_RXBUFFER_512
)
3479 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3480 else if (max_frame
<= E1000_RXBUFFER_1024
)
3481 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3482 else if (max_frame
<= E1000_RXBUFFER_2048
)
3483 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3484 else if (max_frame
<= E1000_RXBUFFER_4096
)
3485 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3486 else if (max_frame
<= E1000_RXBUFFER_8192
)
3487 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3488 else if (max_frame
<= E1000_RXBUFFER_16384
)
3489 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3491 /* adjust allocation if LPE protects us, and we aren't using SBP */
3492 if (!hw
->tbi_compatibility_on
&&
3493 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3494 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3495 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3497 netdev
->mtu
= new_mtu
;
3498 hw
->max_frame_size
= max_frame
;
3500 if (netif_running(netdev
))
3501 e1000_reinit_locked(adapter
);
3507 * e1000_update_stats - Update the board statistics counters
3508 * @adapter: board private structure
3511 void e1000_update_stats(struct e1000_adapter
*adapter
)
3513 struct e1000_hw
*hw
= &adapter
->hw
;
3514 struct pci_dev
*pdev
= adapter
->pdev
;
3515 unsigned long flags
;
3518 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3521 * Prevent stats update while adapter is being reset, or if the pci
3522 * connection is down.
3524 if (adapter
->link_speed
== 0)
3526 if (pci_channel_offline(pdev
))
3529 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3531 /* these counters are modified from e1000_tbi_adjust_stats,
3532 * called from the interrupt context, so they must only
3533 * be written while holding adapter->stats_lock
3536 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3537 adapter
->stats
.gprc
+= er32(GPRC
);
3538 adapter
->stats
.gorcl
+= er32(GORCL
);
3539 adapter
->stats
.gorch
+= er32(GORCH
);
3540 adapter
->stats
.bprc
+= er32(BPRC
);
3541 adapter
->stats
.mprc
+= er32(MPRC
);
3542 adapter
->stats
.roc
+= er32(ROC
);
3544 if (hw
->mac_type
!= e1000_ich8lan
) {
3545 adapter
->stats
.prc64
+= er32(PRC64
);
3546 adapter
->stats
.prc127
+= er32(PRC127
);
3547 adapter
->stats
.prc255
+= er32(PRC255
);
3548 adapter
->stats
.prc511
+= er32(PRC511
);
3549 adapter
->stats
.prc1023
+= er32(PRC1023
);
3550 adapter
->stats
.prc1522
+= er32(PRC1522
);
3553 adapter
->stats
.symerrs
+= er32(SYMERRS
);
3554 adapter
->stats
.mpc
+= er32(MPC
);
3555 adapter
->stats
.scc
+= er32(SCC
);
3556 adapter
->stats
.ecol
+= er32(ECOL
);
3557 adapter
->stats
.mcc
+= er32(MCC
);
3558 adapter
->stats
.latecol
+= er32(LATECOL
);
3559 adapter
->stats
.dc
+= er32(DC
);
3560 adapter
->stats
.sec
+= er32(SEC
);
3561 adapter
->stats
.rlec
+= er32(RLEC
);
3562 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3563 adapter
->stats
.xontxc
+= er32(XONTXC
);
3564 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3565 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3566 adapter
->stats
.fcruc
+= er32(FCRUC
);
3567 adapter
->stats
.gptc
+= er32(GPTC
);
3568 adapter
->stats
.gotcl
+= er32(GOTCL
);
3569 adapter
->stats
.gotch
+= er32(GOTCH
);
3570 adapter
->stats
.rnbc
+= er32(RNBC
);
3571 adapter
->stats
.ruc
+= er32(RUC
);
3572 adapter
->stats
.rfc
+= er32(RFC
);
3573 adapter
->stats
.rjc
+= er32(RJC
);
3574 adapter
->stats
.torl
+= er32(TORL
);
3575 adapter
->stats
.torh
+= er32(TORH
);
3576 adapter
->stats
.totl
+= er32(TOTL
);
3577 adapter
->stats
.toth
+= er32(TOTH
);
3578 adapter
->stats
.tpr
+= er32(TPR
);
3580 if (hw
->mac_type
!= e1000_ich8lan
) {
3581 adapter
->stats
.ptc64
+= er32(PTC64
);
3582 adapter
->stats
.ptc127
+= er32(PTC127
);
3583 adapter
->stats
.ptc255
+= er32(PTC255
);
3584 adapter
->stats
.ptc511
+= er32(PTC511
);
3585 adapter
->stats
.ptc1023
+= er32(PTC1023
);
3586 adapter
->stats
.ptc1522
+= er32(PTC1522
);
3589 adapter
->stats
.mptc
+= er32(MPTC
);
3590 adapter
->stats
.bptc
+= er32(BPTC
);
3592 /* used for adaptive IFS */
3594 hw
->tx_packet_delta
= er32(TPT
);
3595 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3596 hw
->collision_delta
= er32(COLC
);
3597 adapter
->stats
.colc
+= hw
->collision_delta
;
3599 if (hw
->mac_type
>= e1000_82543
) {
3600 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3601 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3602 adapter
->stats
.tncrs
+= er32(TNCRS
);
3603 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3604 adapter
->stats
.tsctc
+= er32(TSCTC
);
3605 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3607 if (hw
->mac_type
> e1000_82547_rev_2
) {
3608 adapter
->stats
.iac
+= er32(IAC
);
3609 adapter
->stats
.icrxoc
+= er32(ICRXOC
);
3611 if (hw
->mac_type
!= e1000_ich8lan
) {
3612 adapter
->stats
.icrxptc
+= er32(ICRXPTC
);
3613 adapter
->stats
.icrxatc
+= er32(ICRXATC
);
3614 adapter
->stats
.ictxptc
+= er32(ICTXPTC
);
3615 adapter
->stats
.ictxatc
+= er32(ICTXATC
);
3616 adapter
->stats
.ictxqec
+= er32(ICTXQEC
);
3617 adapter
->stats
.ictxqmtc
+= er32(ICTXQMTC
);
3618 adapter
->stats
.icrxdmtc
+= er32(ICRXDMTC
);
3622 /* Fill out the OS statistics structure */
3623 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3624 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3628 /* RLEC on some newer hardware can be incorrect so build
3629 * our own version based on RUC and ROC */
3630 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3631 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3632 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3633 adapter
->stats
.cexterr
;
3634 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3635 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3636 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3637 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3638 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3641 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3642 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3643 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3644 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3645 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3646 if (hw
->bad_tx_carr_stats_fd
&&
3647 adapter
->link_duplex
== FULL_DUPLEX
) {
3648 adapter
->net_stats
.tx_carrier_errors
= 0;
3649 adapter
->stats
.tncrs
= 0;
3652 /* Tx Dropped needs to be maintained elsewhere */
3655 if (hw
->media_type
== e1000_media_type_copper
) {
3656 if ((adapter
->link_speed
== SPEED_1000
) &&
3657 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3658 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3659 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3662 if ((hw
->mac_type
<= e1000_82546
) &&
3663 (hw
->phy_type
== e1000_phy_m88
) &&
3664 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3665 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3668 /* Management Stats */
3669 if (hw
->has_smbus
) {
3670 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3671 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3672 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3675 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3679 * e1000_intr_msi - Interrupt Handler
3680 * @irq: interrupt number
3681 * @data: pointer to a network interface device structure
3684 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3686 struct net_device
*netdev
= data
;
3687 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3688 struct e1000_hw
*hw
= &adapter
->hw
;
3689 u32 icr
= er32(ICR
);
3691 /* in NAPI mode read ICR disables interrupts using IAM */
3693 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3694 hw
->get_link_status
= 1;
3695 /* 80003ES2LAN workaround-- For packet buffer work-around on
3696 * link down event; disable receives here in the ISR and reset
3697 * adapter in watchdog */
3698 if (netif_carrier_ok(netdev
) &&
3699 (hw
->mac_type
== e1000_80003es2lan
)) {
3700 /* disable receives */
3701 u32 rctl
= er32(RCTL
);
3702 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3704 /* guard against interrupt when we're going down */
3705 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3706 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3709 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3710 adapter
->total_tx_bytes
= 0;
3711 adapter
->total_tx_packets
= 0;
3712 adapter
->total_rx_bytes
= 0;
3713 adapter
->total_rx_packets
= 0;
3714 __netif_rx_schedule(netdev
, &adapter
->napi
);
3716 e1000_irq_enable(adapter
);
3722 * e1000_intr - Interrupt Handler
3723 * @irq: interrupt number
3724 * @data: pointer to a network interface device structure
3727 static irqreturn_t
e1000_intr(int irq
, void *data
)
3729 struct net_device
*netdev
= data
;
3730 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3731 struct e1000_hw
*hw
= &adapter
->hw
;
3732 u32 rctl
, icr
= er32(ICR
);
3735 return IRQ_NONE
; /* Not our interrupt */
3737 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3738 * not set, then the adapter didn't send an interrupt */
3739 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3740 !(icr
& E1000_ICR_INT_ASSERTED
)))
3743 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3744 * need for the IMC write */
3746 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3747 hw
->get_link_status
= 1;
3748 /* 80003ES2LAN workaround--
3749 * For packet buffer work-around on link down event;
3750 * disable receives here in the ISR and
3751 * reset adapter in watchdog
3753 if (netif_carrier_ok(netdev
) &&
3754 (hw
->mac_type
== e1000_80003es2lan
)) {
3755 /* disable receives */
3757 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3759 /* guard against interrupt when we're going down */
3760 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3761 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3764 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3765 /* disable interrupts, without the synchronize_irq bit */
3767 E1000_WRITE_FLUSH();
3769 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3770 adapter
->total_tx_bytes
= 0;
3771 adapter
->total_tx_packets
= 0;
3772 adapter
->total_rx_bytes
= 0;
3773 adapter
->total_rx_packets
= 0;
3774 __netif_rx_schedule(netdev
, &adapter
->napi
);
3776 /* this really should not happen! if it does it is basically a
3777 * bug, but not a hard error, so enable ints and continue */
3778 e1000_irq_enable(adapter
);
3784 * e1000_clean - NAPI Rx polling callback
3785 * @adapter: board private structure
3787 static int e1000_clean(struct napi_struct
*napi
, int budget
)
3789 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
3790 struct net_device
*poll_dev
= adapter
->netdev
;
3791 int tx_cleaned
= 0, work_done
= 0;
3793 /* Must NOT use netdev_priv macro here. */
3794 adapter
= poll_dev
->priv
;
3796 /* e1000_clean is called per-cpu. This lock protects
3797 * tx_ring[0] from being cleaned by multiple cpus
3798 * simultaneously. A failure obtaining the lock means
3799 * tx_ring[0] is currently being cleaned anyway. */
3800 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3801 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3802 &adapter
->tx_ring
[0]);
3803 spin_unlock(&adapter
->tx_queue_lock
);
3806 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3807 &work_done
, budget
);
3812 /* If budget not fully consumed, exit the polling mode */
3813 if (work_done
< budget
) {
3814 if (likely(adapter
->itr_setting
& 3))
3815 e1000_set_itr(adapter
);
3816 netif_rx_complete(poll_dev
, napi
);
3817 e1000_irq_enable(adapter
);
3824 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3825 * @adapter: board private structure
3827 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3828 struct e1000_tx_ring
*tx_ring
)
3830 struct e1000_hw
*hw
= &adapter
->hw
;
3831 struct net_device
*netdev
= adapter
->netdev
;
3832 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3833 struct e1000_buffer
*buffer_info
;
3834 unsigned int i
, eop
;
3835 unsigned int count
= 0;
3836 bool cleaned
= false;
3837 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3839 i
= tx_ring
->next_to_clean
;
3840 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3841 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3843 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3844 for (cleaned
= false; !cleaned
; ) {
3845 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3846 buffer_info
= &tx_ring
->buffer_info
[i
];
3847 cleaned
= (i
== eop
);
3850 struct sk_buff
*skb
= buffer_info
->skb
;
3851 unsigned int segs
, bytecount
;
3852 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3853 /* multiply data chunks by size of headers */
3854 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3856 total_tx_packets
+= segs
;
3857 total_tx_bytes
+= bytecount
;
3859 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3860 tx_desc
->upper
.data
= 0;
3862 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3865 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3866 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3867 #define E1000_TX_WEIGHT 64
3868 /* weight of a sort for tx, to avoid endless transmit cleanup */
3869 if (count
++ == E1000_TX_WEIGHT
)
3873 tx_ring
->next_to_clean
= i
;
3875 #define TX_WAKE_THRESHOLD 32
3876 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3877 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3878 /* Make sure that anybody stopping the queue after this
3879 * sees the new next_to_clean.
3882 if (netif_queue_stopped(netdev
)) {
3883 netif_wake_queue(netdev
);
3884 ++adapter
->restart_queue
;
3888 if (adapter
->detect_tx_hung
) {
3889 /* Detect a transmit hang in hardware, this serializes the
3890 * check with the clearing of time_stamp and movement of i */
3891 adapter
->detect_tx_hung
= false;
3892 if (tx_ring
->buffer_info
[eop
].dma
&&
3893 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3894 (adapter
->tx_timeout_factor
* HZ
))
3895 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
3897 /* detected Tx unit hang */
3898 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3902 " next_to_use <%x>\n"
3903 " next_to_clean <%x>\n"
3904 "buffer_info[next_to_clean]\n"
3905 " time_stamp <%lx>\n"
3906 " next_to_watch <%x>\n"
3908 " next_to_watch.status <%x>\n",
3909 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3910 sizeof(struct e1000_tx_ring
)),
3911 readl(hw
->hw_addr
+ tx_ring
->tdh
),
3912 readl(hw
->hw_addr
+ tx_ring
->tdt
),
3913 tx_ring
->next_to_use
,
3914 tx_ring
->next_to_clean
,
3915 tx_ring
->buffer_info
[eop
].time_stamp
,
3918 eop_desc
->upper
.fields
.status
);
3919 netif_stop_queue(netdev
);
3922 adapter
->total_tx_bytes
+= total_tx_bytes
;
3923 adapter
->total_tx_packets
+= total_tx_packets
;
3924 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
3925 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
3930 * e1000_rx_checksum - Receive Checksum Offload for 82543
3931 * @adapter: board private structure
3932 * @status_err: receive descriptor status and error fields
3933 * @csum: receive descriptor csum field
3934 * @sk_buff: socket buffer with received data
3937 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
3938 u32 csum
, struct sk_buff
*skb
)
3940 struct e1000_hw
*hw
= &adapter
->hw
;
3941 u16 status
= (u16
)status_err
;
3942 u8 errors
= (u8
)(status_err
>> 24);
3943 skb
->ip_summed
= CHECKSUM_NONE
;
3945 /* 82543 or newer only */
3946 if (unlikely(hw
->mac_type
< e1000_82543
)) return;
3947 /* Ignore Checksum bit is set */
3948 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3949 /* TCP/UDP checksum error bit is set */
3950 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3951 /* let the stack verify checksum errors */
3952 adapter
->hw_csum_err
++;
3955 /* TCP/UDP Checksum has not been calculated */
3956 if (hw
->mac_type
<= e1000_82547_rev_2
) {
3957 if (!(status
& E1000_RXD_STAT_TCPCS
))
3960 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3963 /* It must be a TCP or UDP packet with a valid checksum */
3964 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3965 /* TCP checksum is good */
3966 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3967 } else if (hw
->mac_type
> e1000_82547_rev_2
) {
3968 /* IP fragment with UDP payload */
3969 /* Hardware complements the payload checksum, so we undo it
3970 * and then put the value in host order for further stack use.
3972 __sum16 sum
= (__force __sum16
)htons(csum
);
3973 skb
->csum
= csum_unfold(~sum
);
3974 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3976 adapter
->hw_csum_good
++;
3980 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3981 * @adapter: board private structure
3983 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3984 struct e1000_rx_ring
*rx_ring
,
3985 int *work_done
, int work_to_do
)
3987 struct e1000_hw
*hw
= &adapter
->hw
;
3988 struct net_device
*netdev
= adapter
->netdev
;
3989 struct pci_dev
*pdev
= adapter
->pdev
;
3990 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3991 struct e1000_buffer
*buffer_info
, *next_buffer
;
3992 unsigned long flags
;
3996 int cleaned_count
= 0;
3997 bool cleaned
= false;
3998 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4000 i
= rx_ring
->next_to_clean
;
4001 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4002 buffer_info
= &rx_ring
->buffer_info
[i
];
4004 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4005 struct sk_buff
*skb
;
4008 if (*work_done
>= work_to_do
)
4012 status
= rx_desc
->status
;
4013 skb
= buffer_info
->skb
;
4014 buffer_info
->skb
= NULL
;
4016 prefetch(skb
->data
- NET_IP_ALIGN
);
4018 if (++i
== rx_ring
->count
) i
= 0;
4019 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4022 next_buffer
= &rx_ring
->buffer_info
[i
];
4026 pci_unmap_single(pdev
,
4028 buffer_info
->length
,
4029 PCI_DMA_FROMDEVICE
);
4031 length
= le16_to_cpu(rx_desc
->length
);
4033 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4034 /* All receives must fit into a single buffer */
4035 E1000_DBG("%s: Receive packet consumed multiple"
4036 " buffers\n", netdev
->name
);
4038 buffer_info
->skb
= skb
;
4042 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4043 last_byte
= *(skb
->data
+ length
- 1);
4044 if (TBI_ACCEPT(hw
, status
, rx_desc
->errors
, length
,
4046 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4047 e1000_tbi_adjust_stats(hw
, &adapter
->stats
,
4049 spin_unlock_irqrestore(&adapter
->stats_lock
,
4054 buffer_info
->skb
= skb
;
4059 /* adjust length to remove Ethernet CRC, this must be
4060 * done after the TBI_ACCEPT workaround above */
4063 /* probably a little skewed due to removing CRC */
4064 total_rx_bytes
+= length
;
4067 /* code added for copybreak, this should improve
4068 * performance for small packets with large amounts
4069 * of reassembly being done in the stack */
4070 if (length
< copybreak
) {
4071 struct sk_buff
*new_skb
=
4072 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4074 skb_reserve(new_skb
, NET_IP_ALIGN
);
4075 skb_copy_to_linear_data_offset(new_skb
,
4081 /* save the skb in buffer_info as good */
4082 buffer_info
->skb
= skb
;
4085 /* else just continue with the old one */
4087 /* end copybreak code */
4088 skb_put(skb
, length
);
4090 /* Receive Checksum Offload */
4091 e1000_rx_checksum(adapter
,
4093 ((u32
)(rx_desc
->errors
) << 24),
4094 le16_to_cpu(rx_desc
->csum
), skb
);
4096 skb
->protocol
= eth_type_trans(skb
, netdev
);
4098 if (unlikely(adapter
->vlgrp
&&
4099 (status
& E1000_RXD_STAT_VP
))) {
4100 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4101 le16_to_cpu(rx_desc
->special
));
4103 netif_receive_skb(skb
);
4106 netdev
->last_rx
= jiffies
;
4109 rx_desc
->status
= 0;
4111 /* return some buffers to hardware, one at a time is too slow */
4112 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4113 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4117 /* use prefetched values */
4119 buffer_info
= next_buffer
;
4121 rx_ring
->next_to_clean
= i
;
4123 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4125 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4127 adapter
->total_rx_packets
+= total_rx_packets
;
4128 adapter
->total_rx_bytes
+= total_rx_bytes
;
4129 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4130 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4135 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4136 * @adapter: address of board private structure
4139 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4140 struct e1000_rx_ring
*rx_ring
,
4143 struct e1000_hw
*hw
= &adapter
->hw
;
4144 struct net_device
*netdev
= adapter
->netdev
;
4145 struct pci_dev
*pdev
= adapter
->pdev
;
4146 struct e1000_rx_desc
*rx_desc
;
4147 struct e1000_buffer
*buffer_info
;
4148 struct sk_buff
*skb
;
4150 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4152 i
= rx_ring
->next_to_use
;
4153 buffer_info
= &rx_ring
->buffer_info
[i
];
4155 while (cleaned_count
--) {
4156 skb
= buffer_info
->skb
;
4162 skb
= netdev_alloc_skb(netdev
, bufsz
);
4163 if (unlikely(!skb
)) {
4164 /* Better luck next round */
4165 adapter
->alloc_rx_buff_failed
++;
4169 /* Fix for errata 23, can't cross 64kB boundary */
4170 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4171 struct sk_buff
*oldskb
= skb
;
4172 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4173 "at %p\n", bufsz
, skb
->data
);
4174 /* Try again, without freeing the previous */
4175 skb
= netdev_alloc_skb(netdev
, bufsz
);
4176 /* Failed allocation, critical failure */
4178 dev_kfree_skb(oldskb
);
4182 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4185 dev_kfree_skb(oldskb
);
4186 break; /* while !buffer_info->skb */
4189 /* Use new allocation */
4190 dev_kfree_skb(oldskb
);
4192 /* Make buffer alignment 2 beyond a 16 byte boundary
4193 * this will result in a 16 byte aligned IP header after
4194 * the 14 byte MAC header is removed
4196 skb_reserve(skb
, NET_IP_ALIGN
);
4198 buffer_info
->skb
= skb
;
4199 buffer_info
->length
= adapter
->rx_buffer_len
;
4201 buffer_info
->dma
= pci_map_single(pdev
,
4203 adapter
->rx_buffer_len
,
4204 PCI_DMA_FROMDEVICE
);
4206 /* Fix for errata 23, can't cross 64kB boundary */
4207 if (!e1000_check_64k_bound(adapter
,
4208 (void *)(unsigned long)buffer_info
->dma
,
4209 adapter
->rx_buffer_len
)) {
4210 DPRINTK(RX_ERR
, ERR
,
4211 "dma align check failed: %u bytes at %p\n",
4212 adapter
->rx_buffer_len
,
4213 (void *)(unsigned long)buffer_info
->dma
);
4215 buffer_info
->skb
= NULL
;
4217 pci_unmap_single(pdev
, buffer_info
->dma
,
4218 adapter
->rx_buffer_len
,
4219 PCI_DMA_FROMDEVICE
);
4221 break; /* while !buffer_info->skb */
4223 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4224 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4226 if (unlikely(++i
== rx_ring
->count
))
4228 buffer_info
= &rx_ring
->buffer_info
[i
];
4231 if (likely(rx_ring
->next_to_use
!= i
)) {
4232 rx_ring
->next_to_use
= i
;
4233 if (unlikely(i
-- == 0))
4234 i
= (rx_ring
->count
- 1);
4236 /* Force memory writes to complete before letting h/w
4237 * know there are new descriptors to fetch. (Only
4238 * applicable for weak-ordered memory model archs,
4239 * such as IA-64). */
4241 writel(i
, hw
->hw_addr
+ rx_ring
->rdt
);
4246 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4250 static void e1000_smartspeed(struct e1000_adapter
*adapter
)
4252 struct e1000_hw
*hw
= &adapter
->hw
;
4256 if ((hw
->phy_type
!= e1000_phy_igp
) || !hw
->autoneg
||
4257 !(hw
->autoneg_advertised
& ADVERTISE_1000_FULL
))
4260 if (adapter
->smartspeed
== 0) {
4261 /* If Master/Slave config fault is asserted twice,
4262 * we assume back-to-back */
4263 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4264 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4265 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4266 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4267 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4268 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4269 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4270 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
,
4272 adapter
->smartspeed
++;
4273 if (!e1000_phy_setup_autoneg(hw
) &&
4274 !e1000_read_phy_reg(hw
, PHY_CTRL
,
4276 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4277 MII_CR_RESTART_AUTO_NEG
);
4278 e1000_write_phy_reg(hw
, PHY_CTRL
,
4283 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4284 /* If still no link, perhaps using 2/3 pair cable */
4285 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4286 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4287 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
, phy_ctrl
);
4288 if (!e1000_phy_setup_autoneg(hw
) &&
4289 !e1000_read_phy_reg(hw
, PHY_CTRL
, &phy_ctrl
)) {
4290 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4291 MII_CR_RESTART_AUTO_NEG
);
4292 e1000_write_phy_reg(hw
, PHY_CTRL
, phy_ctrl
);
4295 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4296 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4297 adapter
->smartspeed
= 0;
4307 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4313 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4326 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4329 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4330 struct e1000_hw
*hw
= &adapter
->hw
;
4331 struct mii_ioctl_data
*data
= if_mii(ifr
);
4335 unsigned long flags
;
4337 if (hw
->media_type
!= e1000_media_type_copper
)
4342 data
->phy_id
= hw
->phy_addr
;
4345 if (!capable(CAP_NET_ADMIN
))
4347 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4348 if (e1000_read_phy_reg(hw
, data
->reg_num
& 0x1F,
4350 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4353 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4356 if (!capable(CAP_NET_ADMIN
))
4358 if (data
->reg_num
& ~(0x1F))
4360 mii_reg
= data
->val_in
;
4361 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4362 if (e1000_write_phy_reg(hw
, data
->reg_num
,
4364 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4367 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4368 if (hw
->media_type
== e1000_media_type_copper
) {
4369 switch (data
->reg_num
) {
4371 if (mii_reg
& MII_CR_POWER_DOWN
)
4373 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4375 hw
->autoneg_advertised
= 0x2F;
4378 spddplx
= SPEED_1000
;
4379 else if (mii_reg
& 0x2000)
4380 spddplx
= SPEED_100
;
4383 spddplx
+= (mii_reg
& 0x100)
4386 retval
= e1000_set_spd_dplx(adapter
,
4391 if (netif_running(adapter
->netdev
))
4392 e1000_reinit_locked(adapter
);
4394 e1000_reset(adapter
);
4396 case M88E1000_PHY_SPEC_CTRL
:
4397 case M88E1000_EXT_PHY_SPEC_CTRL
:
4398 if (e1000_phy_reset(hw
))
4403 switch (data
->reg_num
) {
4405 if (mii_reg
& MII_CR_POWER_DOWN
)
4407 if (netif_running(adapter
->netdev
))
4408 e1000_reinit_locked(adapter
);
4410 e1000_reset(adapter
);
4418 return E1000_SUCCESS
;
4421 void e1000_pci_set_mwi(struct e1000_hw
*hw
)
4423 struct e1000_adapter
*adapter
= hw
->back
;
4424 int ret_val
= pci_set_mwi(adapter
->pdev
);
4427 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4430 void e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4432 struct e1000_adapter
*adapter
= hw
->back
;
4434 pci_clear_mwi(adapter
->pdev
);
4437 int e1000_pcix_get_mmrbc(struct e1000_hw
*hw
)
4439 struct e1000_adapter
*adapter
= hw
->back
;
4440 return pcix_get_mmrbc(adapter
->pdev
);
4443 void e1000_pcix_set_mmrbc(struct e1000_hw
*hw
, int mmrbc
)
4445 struct e1000_adapter
*adapter
= hw
->back
;
4446 pcix_set_mmrbc(adapter
->pdev
, mmrbc
);
4449 s32
e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, u32 reg
, u16
*value
)
4451 struct e1000_adapter
*adapter
= hw
->back
;
4454 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4456 return -E1000_ERR_CONFIG
;
4458 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4460 return E1000_SUCCESS
;
4463 void e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, u32 value
)
4468 static void e1000_vlan_rx_register(struct net_device
*netdev
,
4469 struct vlan_group
*grp
)
4471 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4472 struct e1000_hw
*hw
= &adapter
->hw
;
4475 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4476 e1000_irq_disable(adapter
);
4477 adapter
->vlgrp
= grp
;
4480 /* enable VLAN tag insert/strip */
4482 ctrl
|= E1000_CTRL_VME
;
4485 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4486 /* enable VLAN receive filtering */
4488 rctl
&= ~E1000_RCTL_CFIEN
;
4490 e1000_update_mng_vlan(adapter
);
4493 /* disable VLAN tag insert/strip */
4495 ctrl
&= ~E1000_CTRL_VME
;
4498 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4499 if (adapter
->mng_vlan_id
!=
4500 (u16
)E1000_MNG_VLAN_NONE
) {
4501 e1000_vlan_rx_kill_vid(netdev
,
4502 adapter
->mng_vlan_id
);
4503 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4508 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4509 e1000_irq_enable(adapter
);
4512 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4514 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4515 struct e1000_hw
*hw
= &adapter
->hw
;
4518 if ((hw
->mng_cookie
.status
&
4519 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4520 (vid
== adapter
->mng_vlan_id
))
4522 /* add VID to filter table */
4523 index
= (vid
>> 5) & 0x7F;
4524 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4525 vfta
|= (1 << (vid
& 0x1F));
4526 e1000_write_vfta(hw
, index
, vfta
);
4529 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4531 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4532 struct e1000_hw
*hw
= &adapter
->hw
;
4535 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4536 e1000_irq_disable(adapter
);
4537 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4538 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4539 e1000_irq_enable(adapter
);
4541 if ((hw
->mng_cookie
.status
&
4542 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4543 (vid
== adapter
->mng_vlan_id
)) {
4544 /* release control to f/w */
4545 e1000_release_hw_control(adapter
);
4549 /* remove VID from filter table */
4550 index
= (vid
>> 5) & 0x7F;
4551 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4552 vfta
&= ~(1 << (vid
& 0x1F));
4553 e1000_write_vfta(hw
, index
, vfta
);
4556 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
4558 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4560 if (adapter
->vlgrp
) {
4562 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4563 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4565 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4570 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
)
4572 struct e1000_hw
*hw
= &adapter
->hw
;
4576 /* Fiber NICs only allow 1000 gbps Full duplex */
4577 if ((hw
->media_type
== e1000_media_type_fiber
) &&
4578 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4579 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4584 case SPEED_10
+ DUPLEX_HALF
:
4585 hw
->forced_speed_duplex
= e1000_10_half
;
4587 case SPEED_10
+ DUPLEX_FULL
:
4588 hw
->forced_speed_duplex
= e1000_10_full
;
4590 case SPEED_100
+ DUPLEX_HALF
:
4591 hw
->forced_speed_duplex
= e1000_100_half
;
4593 case SPEED_100
+ DUPLEX_FULL
:
4594 hw
->forced_speed_duplex
= e1000_100_full
;
4596 case SPEED_1000
+ DUPLEX_FULL
:
4598 hw
->autoneg_advertised
= ADVERTISE_1000_FULL
;
4600 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4602 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4608 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4610 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4611 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4612 struct e1000_hw
*hw
= &adapter
->hw
;
4613 u32 ctrl
, ctrl_ext
, rctl
, status
;
4614 u32 wufc
= adapter
->wol
;
4619 netif_device_detach(netdev
);
4621 if (netif_running(netdev
)) {
4622 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4623 e1000_down(adapter
);
4627 retval
= pci_save_state(pdev
);
4632 status
= er32(STATUS
);
4633 if (status
& E1000_STATUS_LU
)
4634 wufc
&= ~E1000_WUFC_LNKC
;
4637 e1000_setup_rctl(adapter
);
4638 e1000_set_rx_mode(netdev
);
4640 /* turn on all-multi mode if wake on multicast is enabled */
4641 if (wufc
& E1000_WUFC_MC
) {
4643 rctl
|= E1000_RCTL_MPE
;
4647 if (hw
->mac_type
>= e1000_82540
) {
4649 /* advertise wake from D3Cold */
4650 #define E1000_CTRL_ADVD3WUC 0x00100000
4651 /* phy power management enable */
4652 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4653 ctrl
|= E1000_CTRL_ADVD3WUC
|
4654 E1000_CTRL_EN_PHY_PWR_MGMT
;
4658 if (hw
->media_type
== e1000_media_type_fiber
||
4659 hw
->media_type
== e1000_media_type_internal_serdes
) {
4660 /* keep the laser running in D3 */
4661 ctrl_ext
= er32(CTRL_EXT
);
4662 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4663 ew32(CTRL_EXT
, ctrl_ext
);
4666 /* Allow time for pending master requests to run */
4667 e1000_disable_pciex_master(hw
);
4669 ew32(WUC
, E1000_WUC_PME_EN
);
4671 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4672 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4676 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4677 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4680 e1000_release_manageability(adapter
);
4682 /* make sure adapter isn't asleep if manageability is enabled */
4683 if (adapter
->en_mng_pt
) {
4684 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4685 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4688 if (hw
->phy_type
== e1000_phy_igp_3
)
4689 e1000_phy_powerdown_workaround(hw
);
4691 if (netif_running(netdev
))
4692 e1000_free_irq(adapter
);
4694 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4695 * would have already happened in close and is redundant. */
4696 e1000_release_hw_control(adapter
);
4698 pci_disable_device(pdev
);
4700 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4706 static int e1000_resume(struct pci_dev
*pdev
)
4708 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4709 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4710 struct e1000_hw
*hw
= &adapter
->hw
;
4713 pci_set_power_state(pdev
, PCI_D0
);
4714 pci_restore_state(pdev
);
4716 if (adapter
->need_ioport
)
4717 err
= pci_enable_device(pdev
);
4719 err
= pci_enable_device_mem(pdev
);
4721 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4724 pci_set_master(pdev
);
4726 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4727 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4729 if (netif_running(netdev
)) {
4730 err
= e1000_request_irq(adapter
);
4735 e1000_power_up_phy(adapter
);
4736 e1000_reset(adapter
);
4739 e1000_init_manageability(adapter
);
4741 if (netif_running(netdev
))
4744 netif_device_attach(netdev
);
4746 /* If the controller is 82573 and f/w is AMT, do not set
4747 * DRV_LOAD until the interface is up. For all other cases,
4748 * let the f/w know that the h/w is now under the control
4750 if (hw
->mac_type
!= e1000_82573
||
4751 !e1000_check_mng_mode(hw
))
4752 e1000_get_hw_control(adapter
);
4758 static void e1000_shutdown(struct pci_dev
*pdev
)
4760 e1000_suspend(pdev
, PMSG_SUSPEND
);
4763 #ifdef CONFIG_NET_POLL_CONTROLLER
4765 * Polling 'interrupt' - used by things like netconsole to send skbs
4766 * without having to re-enable interrupts. It's not called while
4767 * the interrupt routine is executing.
4769 static void e1000_netpoll(struct net_device
*netdev
)
4771 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4773 disable_irq(adapter
->pdev
->irq
);
4774 e1000_intr(adapter
->pdev
->irq
, netdev
);
4775 enable_irq(adapter
->pdev
->irq
);
4780 * e1000_io_error_detected - called when PCI error is detected
4781 * @pdev: Pointer to PCI device
4782 * @state: The current pci conneection state
4784 * This function is called after a PCI bus error affecting
4785 * this device has been detected.
4787 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4788 pci_channel_state_t state
)
4790 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4791 struct e1000_adapter
*adapter
= netdev
->priv
;
4793 netif_device_detach(netdev
);
4795 if (netif_running(netdev
))
4796 e1000_down(adapter
);
4797 pci_disable_device(pdev
);
4799 /* Request a slot slot reset. */
4800 return PCI_ERS_RESULT_NEED_RESET
;
4804 * e1000_io_slot_reset - called after the pci bus has been reset.
4805 * @pdev: Pointer to PCI device
4807 * Restart the card from scratch, as if from a cold-boot. Implementation
4808 * resembles the first-half of the e1000_resume routine.
4810 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4812 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4813 struct e1000_adapter
*adapter
= netdev
->priv
;
4814 struct e1000_hw
*hw
= &adapter
->hw
;
4817 if (adapter
->need_ioport
)
4818 err
= pci_enable_device(pdev
);
4820 err
= pci_enable_device_mem(pdev
);
4822 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4823 return PCI_ERS_RESULT_DISCONNECT
;
4825 pci_set_master(pdev
);
4827 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4828 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4830 e1000_reset(adapter
);
4833 return PCI_ERS_RESULT_RECOVERED
;
4837 * e1000_io_resume - called when traffic can start flowing again.
4838 * @pdev: Pointer to PCI device
4840 * This callback is called when the error recovery driver tells us that
4841 * its OK to resume normal operation. Implementation resembles the
4842 * second-half of the e1000_resume routine.
4844 static void e1000_io_resume(struct pci_dev
*pdev
)
4846 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4847 struct e1000_adapter
*adapter
= netdev
->priv
;
4848 struct e1000_hw
*hw
= &adapter
->hw
;
4850 e1000_init_manageability(adapter
);
4852 if (netif_running(netdev
)) {
4853 if (e1000_up(adapter
)) {
4854 printk("e1000: can't bring device back up after reset\n");
4859 netif_device_attach(netdev
);
4861 /* If the controller is 82573 and f/w is AMT, do not set
4862 * DRV_LOAD until the interface is up. For all other cases,
4863 * let the f/w know that the h/w is now under the control
4865 if (hw
->mac_type
!= e1000_82573
||
4866 !e1000_check_mng_mode(hw
))
4867 e1000_get_hw_control(adapter
);