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
;
1182 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
1184 /* print bus type/speed/width info */
1185 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1186 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1187 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1188 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1189 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1190 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1191 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1192 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1193 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1194 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1195 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1198 printk("%s\n", print_mac(mac
, netdev
->dev_addr
));
1200 if (hw
->bus_type
== e1000_bus_type_pci_express
) {
1201 DPRINTK(PROBE
, WARNING
, "This device (id %04x:%04x) will no "
1202 "longer be supported by this driver in the future.\n",
1203 pdev
->vendor
, pdev
->device
);
1204 DPRINTK(PROBE
, WARNING
, "please use the \"e1000e\" "
1205 "driver instead.\n");
1208 /* reset the hardware with the new settings */
1209 e1000_reset(adapter
);
1211 /* If the controller is 82573 and f/w is AMT, do not set
1212 * DRV_LOAD until the interface is up. For all other cases,
1213 * let the f/w know that the h/w is now under the control
1215 if (hw
->mac_type
!= e1000_82573
||
1216 !e1000_check_mng_mode(hw
))
1217 e1000_get_hw_control(adapter
);
1219 /* tell the stack to leave us alone until e1000_open() is called */
1220 netif_carrier_off(netdev
);
1221 netif_stop_queue(netdev
);
1223 strcpy(netdev
->name
, "eth%d");
1224 err
= register_netdev(netdev
);
1228 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1234 e1000_release_hw_control(adapter
);
1236 if (!e1000_check_phy_reset_block(hw
))
1237 e1000_phy_hw_reset(hw
);
1239 if (hw
->flash_address
)
1240 iounmap(hw
->flash_address
);
1242 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1243 dev_put(&adapter
->polling_netdev
[i
]);
1245 kfree(adapter
->tx_ring
);
1246 kfree(adapter
->rx_ring
);
1247 kfree(adapter
->polling_netdev
);
1249 iounmap(hw
->hw_addr
);
1251 free_netdev(netdev
);
1253 pci_release_selected_regions(pdev
, bars
);
1256 pci_disable_device(pdev
);
1261 * e1000_remove - Device Removal Routine
1262 * @pdev: PCI device information struct
1264 * e1000_remove is called by the PCI subsystem to alert the driver
1265 * that it should release a PCI device. The could be caused by a
1266 * Hot-Plug event, or because the driver is going to be removed from
1270 static void __devexit
e1000_remove(struct pci_dev
*pdev
)
1272 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1273 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1274 struct e1000_hw
*hw
= &adapter
->hw
;
1277 cancel_work_sync(&adapter
->reset_task
);
1279 e1000_release_manageability(adapter
);
1281 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1282 * would have already happened in close and is redundant. */
1283 e1000_release_hw_control(adapter
);
1285 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1286 dev_put(&adapter
->polling_netdev
[i
]);
1288 unregister_netdev(netdev
);
1290 if (!e1000_check_phy_reset_block(hw
))
1291 e1000_phy_hw_reset(hw
);
1293 kfree(adapter
->tx_ring
);
1294 kfree(adapter
->rx_ring
);
1295 kfree(adapter
->polling_netdev
);
1297 iounmap(hw
->hw_addr
);
1298 if (hw
->flash_address
)
1299 iounmap(hw
->flash_address
);
1300 pci_release_selected_regions(pdev
, adapter
->bars
);
1302 free_netdev(netdev
);
1304 pci_disable_device(pdev
);
1308 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1309 * @adapter: board private structure to initialize
1311 * e1000_sw_init initializes the Adapter private data structure.
1312 * Fields are initialized based on PCI device information and
1313 * OS network device settings (MTU size).
1316 static int __devinit
e1000_sw_init(struct e1000_adapter
*adapter
)
1318 struct e1000_hw
*hw
= &adapter
->hw
;
1319 struct net_device
*netdev
= adapter
->netdev
;
1320 struct pci_dev
*pdev
= adapter
->pdev
;
1323 /* PCI config space info */
1325 hw
->vendor_id
= pdev
->vendor
;
1326 hw
->device_id
= pdev
->device
;
1327 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1328 hw
->subsystem_id
= pdev
->subsystem_device
;
1329 hw
->revision_id
= pdev
->revision
;
1331 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1333 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1334 hw
->max_frame_size
= netdev
->mtu
+
1335 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1336 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1338 /* identify the MAC */
1340 if (e1000_set_mac_type(hw
)) {
1341 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1345 switch (hw
->mac_type
) {
1350 case e1000_82541_rev_2
:
1351 case e1000_82547_rev_2
:
1352 hw
->phy_init_script
= 1;
1356 e1000_set_media_type(hw
);
1358 hw
->wait_autoneg_complete
= false;
1359 hw
->tbi_compatibility_en
= true;
1360 hw
->adaptive_ifs
= true;
1362 /* Copper options */
1364 if (hw
->media_type
== e1000_media_type_copper
) {
1365 hw
->mdix
= AUTO_ALL_MODES
;
1366 hw
->disable_polarity_correction
= false;
1367 hw
->master_slave
= E1000_MASTER_SLAVE
;
1370 adapter
->num_tx_queues
= 1;
1371 adapter
->num_rx_queues
= 1;
1373 if (e1000_alloc_queues(adapter
)) {
1374 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1378 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1379 adapter
->polling_netdev
[i
].priv
= adapter
;
1380 dev_hold(&adapter
->polling_netdev
[i
]);
1381 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1383 spin_lock_init(&adapter
->tx_queue_lock
);
1385 /* Explicitly disable IRQ since the NIC can be in any state. */
1386 e1000_irq_disable(adapter
);
1388 spin_lock_init(&adapter
->stats_lock
);
1390 set_bit(__E1000_DOWN
, &adapter
->flags
);
1396 * e1000_alloc_queues - Allocate memory for all rings
1397 * @adapter: board private structure to initialize
1399 * We allocate one ring per queue at run-time since we don't know the
1400 * number of queues at compile-time. The polling_netdev array is
1401 * intended for Multiqueue, but should work fine with a single queue.
1404 static int __devinit
e1000_alloc_queues(struct e1000_adapter
*adapter
)
1406 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1407 sizeof(struct e1000_tx_ring
), GFP_KERNEL
);
1408 if (!adapter
->tx_ring
)
1411 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1412 sizeof(struct e1000_rx_ring
), GFP_KERNEL
);
1413 if (!adapter
->rx_ring
) {
1414 kfree(adapter
->tx_ring
);
1418 adapter
->polling_netdev
= kcalloc(adapter
->num_rx_queues
,
1419 sizeof(struct net_device
),
1421 if (!adapter
->polling_netdev
) {
1422 kfree(adapter
->tx_ring
);
1423 kfree(adapter
->rx_ring
);
1427 return E1000_SUCCESS
;
1431 * e1000_open - Called when a network interface is made active
1432 * @netdev: network interface device structure
1434 * Returns 0 on success, negative value on failure
1436 * The open entry point is called when a network interface is made
1437 * active by the system (IFF_UP). At this point all resources needed
1438 * for transmit and receive operations are allocated, the interrupt
1439 * handler is registered with the OS, the watchdog timer is started,
1440 * and the stack is notified that the interface is ready.
1443 static int e1000_open(struct net_device
*netdev
)
1445 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1446 struct e1000_hw
*hw
= &adapter
->hw
;
1449 /* disallow open during test */
1450 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1453 /* allocate transmit descriptors */
1454 err
= e1000_setup_all_tx_resources(adapter
);
1458 /* allocate receive descriptors */
1459 err
= e1000_setup_all_rx_resources(adapter
);
1463 e1000_power_up_phy(adapter
);
1465 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1466 if ((hw
->mng_cookie
.status
&
1467 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1468 e1000_update_mng_vlan(adapter
);
1471 /* If AMT is enabled, let the firmware know that the network
1472 * interface is now open */
1473 if (hw
->mac_type
== e1000_82573
&&
1474 e1000_check_mng_mode(hw
))
1475 e1000_get_hw_control(adapter
);
1477 /* before we allocate an interrupt, we must be ready to handle it.
1478 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1479 * as soon as we call pci_request_irq, so we have to setup our
1480 * clean_rx handler before we do so. */
1481 e1000_configure(adapter
);
1483 err
= e1000_request_irq(adapter
);
1487 /* From here on the code is the same as e1000_up() */
1488 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1490 napi_enable(&adapter
->napi
);
1492 e1000_irq_enable(adapter
);
1494 netif_start_queue(netdev
);
1496 /* fire a link status change interrupt to start the watchdog */
1497 ew32(ICS
, E1000_ICS_LSC
);
1499 return E1000_SUCCESS
;
1502 e1000_release_hw_control(adapter
);
1503 e1000_power_down_phy(adapter
);
1504 e1000_free_all_rx_resources(adapter
);
1506 e1000_free_all_tx_resources(adapter
);
1508 e1000_reset(adapter
);
1514 * e1000_close - Disables a network interface
1515 * @netdev: network interface device structure
1517 * Returns 0, this is not allowed to fail
1519 * The close entry point is called when an interface is de-activated
1520 * by the OS. The hardware is still under the drivers control, but
1521 * needs to be disabled. A global MAC reset is issued to stop the
1522 * hardware, and all transmit and receive resources are freed.
1525 static int e1000_close(struct net_device
*netdev
)
1527 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1528 struct e1000_hw
*hw
= &adapter
->hw
;
1530 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1531 e1000_down(adapter
);
1532 e1000_power_down_phy(adapter
);
1533 e1000_free_irq(adapter
);
1535 e1000_free_all_tx_resources(adapter
);
1536 e1000_free_all_rx_resources(adapter
);
1538 /* kill manageability vlan ID if supported, but not if a vlan with
1539 * the same ID is registered on the host OS (let 8021q kill it) */
1540 if ((hw
->mng_cookie
.status
&
1541 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1543 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1544 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1547 /* If AMT is enabled, let the firmware know that the network
1548 * interface is now closed */
1549 if (hw
->mac_type
== e1000_82573
&&
1550 e1000_check_mng_mode(hw
))
1551 e1000_release_hw_control(adapter
);
1557 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1558 * @adapter: address of board private structure
1559 * @start: address of beginning of memory
1560 * @len: length of memory
1562 static bool e1000_check_64k_bound(struct e1000_adapter
*adapter
, void *start
,
1565 struct e1000_hw
*hw
= &adapter
->hw
;
1566 unsigned long begin
= (unsigned long)start
;
1567 unsigned long end
= begin
+ len
;
1569 /* First rev 82545 and 82546 need to not allow any memory
1570 * write location to cross 64k boundary due to errata 23 */
1571 if (hw
->mac_type
== e1000_82545
||
1572 hw
->mac_type
== e1000_82546
) {
1573 return ((begin
^ (end
- 1)) >> 16) != 0 ? false : true;
1580 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1581 * @adapter: board private structure
1582 * @txdr: tx descriptor ring (for a specific queue) to setup
1584 * Return 0 on success, negative on failure
1587 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1588 struct e1000_tx_ring
*txdr
)
1590 struct pci_dev
*pdev
= adapter
->pdev
;
1593 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1594 txdr
->buffer_info
= vmalloc(size
);
1595 if (!txdr
->buffer_info
) {
1597 "Unable to allocate memory for the transmit descriptor ring\n");
1600 memset(txdr
->buffer_info
, 0, size
);
1602 /* round up to nearest 4K */
1604 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1605 txdr
->size
= ALIGN(txdr
->size
, 4096);
1607 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1610 vfree(txdr
->buffer_info
);
1612 "Unable to allocate memory for the transmit descriptor ring\n");
1616 /* Fix for errata 23, can't cross 64kB boundary */
1617 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1618 void *olddesc
= txdr
->desc
;
1619 dma_addr_t olddma
= txdr
->dma
;
1620 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1621 "at %p\n", txdr
->size
, txdr
->desc
);
1622 /* Try again, without freeing the previous */
1623 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1624 /* Failed allocation, critical failure */
1626 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1627 goto setup_tx_desc_die
;
1630 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1632 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1634 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1636 "Unable to allocate aligned memory "
1637 "for the transmit descriptor ring\n");
1638 vfree(txdr
->buffer_info
);
1641 /* Free old allocation, new allocation was successful */
1642 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1645 memset(txdr
->desc
, 0, txdr
->size
);
1647 txdr
->next_to_use
= 0;
1648 txdr
->next_to_clean
= 0;
1649 spin_lock_init(&txdr
->tx_lock
);
1655 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1656 * (Descriptors) for all queues
1657 * @adapter: board private structure
1659 * Return 0 on success, negative on failure
1662 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1666 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1667 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1670 "Allocation for Tx Queue %u failed\n", i
);
1671 for (i
-- ; i
>= 0; i
--)
1672 e1000_free_tx_resources(adapter
,
1673 &adapter
->tx_ring
[i
]);
1682 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1683 * @adapter: board private structure
1685 * Configure the Tx unit of the MAC after a reset.
1688 static void e1000_configure_tx(struct e1000_adapter
*adapter
)
1691 struct e1000_hw
*hw
= &adapter
->hw
;
1692 u32 tdlen
, tctl
, tipg
, tarc
;
1695 /* Setup the HW Tx Head and Tail descriptor pointers */
1697 switch (adapter
->num_tx_queues
) {
1700 tdba
= adapter
->tx_ring
[0].dma
;
1701 tdlen
= adapter
->tx_ring
[0].count
*
1702 sizeof(struct e1000_tx_desc
);
1704 ew32(TDBAH
, (tdba
>> 32));
1705 ew32(TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1708 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1709 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1713 /* Set the default values for the Tx Inter Packet Gap timer */
1714 if (hw
->mac_type
<= e1000_82547_rev_2
&&
1715 (hw
->media_type
== e1000_media_type_fiber
||
1716 hw
->media_type
== e1000_media_type_internal_serdes
))
1717 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1719 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1721 switch (hw
->mac_type
) {
1722 case e1000_82542_rev2_0
:
1723 case e1000_82542_rev2_1
:
1724 tipg
= DEFAULT_82542_TIPG_IPGT
;
1725 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1726 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1728 case e1000_80003es2lan
:
1729 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1730 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1733 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1734 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1737 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1738 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1741 /* Set the Tx Interrupt Delay register */
1743 ew32(TIDV
, adapter
->tx_int_delay
);
1744 if (hw
->mac_type
>= e1000_82540
)
1745 ew32(TADV
, adapter
->tx_abs_int_delay
);
1747 /* Program the Transmit Control Register */
1750 tctl
&= ~E1000_TCTL_CT
;
1751 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1752 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1754 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1756 /* set the speed mode bit, we'll clear it if we're not at
1757 * gigabit link later */
1760 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1769 e1000_config_collision_dist(hw
);
1771 /* Setup Transmit Descriptor Settings for eop descriptor */
1772 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1774 /* only set IDE if we are delaying interrupts using the timers */
1775 if (adapter
->tx_int_delay
)
1776 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1778 if (hw
->mac_type
< e1000_82543
)
1779 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1781 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1783 /* Cache if we're 82544 running in PCI-X because we'll
1784 * need this to apply a workaround later in the send path. */
1785 if (hw
->mac_type
== e1000_82544
&&
1786 hw
->bus_type
== e1000_bus_type_pcix
)
1787 adapter
->pcix_82544
= 1;
1794 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1795 * @adapter: board private structure
1796 * @rxdr: rx descriptor ring (for a specific queue) to setup
1798 * Returns 0 on success, negative on failure
1801 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1802 struct e1000_rx_ring
*rxdr
)
1804 struct e1000_hw
*hw
= &adapter
->hw
;
1805 struct pci_dev
*pdev
= adapter
->pdev
;
1808 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1809 rxdr
->buffer_info
= vmalloc(size
);
1810 if (!rxdr
->buffer_info
) {
1812 "Unable to allocate memory for the receive descriptor ring\n");
1815 memset(rxdr
->buffer_info
, 0, size
);
1817 if (hw
->mac_type
<= e1000_82547_rev_2
)
1818 desc_len
= sizeof(struct e1000_rx_desc
);
1820 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1822 /* Round up to nearest 4K */
1824 rxdr
->size
= rxdr
->count
* desc_len
;
1825 rxdr
->size
= ALIGN(rxdr
->size
, 4096);
1827 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1831 "Unable to allocate memory for the receive descriptor ring\n");
1833 vfree(rxdr
->buffer_info
);
1837 /* Fix for errata 23, can't cross 64kB boundary */
1838 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1839 void *olddesc
= rxdr
->desc
;
1840 dma_addr_t olddma
= rxdr
->dma
;
1841 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1842 "at %p\n", rxdr
->size
, rxdr
->desc
);
1843 /* Try again, without freeing the previous */
1844 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1845 /* Failed allocation, critical failure */
1847 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1849 "Unable to allocate memory "
1850 "for the receive descriptor ring\n");
1851 goto setup_rx_desc_die
;
1854 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1856 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1858 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1860 "Unable to allocate aligned memory "
1861 "for the receive descriptor ring\n");
1862 goto setup_rx_desc_die
;
1864 /* Free old allocation, new allocation was successful */
1865 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1868 memset(rxdr
->desc
, 0, rxdr
->size
);
1870 rxdr
->next_to_clean
= 0;
1871 rxdr
->next_to_use
= 0;
1877 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1878 * (Descriptors) for all queues
1879 * @adapter: board private structure
1881 * Return 0 on success, negative on failure
1884 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1888 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1889 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1892 "Allocation for Rx Queue %u failed\n", i
);
1893 for (i
-- ; i
>= 0; i
--)
1894 e1000_free_rx_resources(adapter
,
1895 &adapter
->rx_ring
[i
]);
1904 * e1000_setup_rctl - configure the receive control registers
1905 * @adapter: Board private structure
1907 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1908 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1909 static void e1000_setup_rctl(struct e1000_adapter
*adapter
)
1911 struct e1000_hw
*hw
= &adapter
->hw
;
1916 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1918 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1919 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1920 (hw
->mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1922 if (hw
->tbi_compatibility_on
== 1)
1923 rctl
|= E1000_RCTL_SBP
;
1925 rctl
&= ~E1000_RCTL_SBP
;
1927 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1928 rctl
&= ~E1000_RCTL_LPE
;
1930 rctl
|= E1000_RCTL_LPE
;
1932 /* Setup buffer sizes */
1933 rctl
&= ~E1000_RCTL_SZ_4096
;
1934 rctl
|= E1000_RCTL_BSEX
;
1935 switch (adapter
->rx_buffer_len
) {
1936 case E1000_RXBUFFER_256
:
1937 rctl
|= E1000_RCTL_SZ_256
;
1938 rctl
&= ~E1000_RCTL_BSEX
;
1940 case E1000_RXBUFFER_512
:
1941 rctl
|= E1000_RCTL_SZ_512
;
1942 rctl
&= ~E1000_RCTL_BSEX
;
1944 case E1000_RXBUFFER_1024
:
1945 rctl
|= E1000_RCTL_SZ_1024
;
1946 rctl
&= ~E1000_RCTL_BSEX
;
1948 case E1000_RXBUFFER_2048
:
1950 rctl
|= E1000_RCTL_SZ_2048
;
1951 rctl
&= ~E1000_RCTL_BSEX
;
1953 case E1000_RXBUFFER_4096
:
1954 rctl
|= E1000_RCTL_SZ_4096
;
1956 case E1000_RXBUFFER_8192
:
1957 rctl
|= E1000_RCTL_SZ_8192
;
1959 case E1000_RXBUFFER_16384
:
1960 rctl
|= E1000_RCTL_SZ_16384
;
1968 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1969 * @adapter: board private structure
1971 * Configure the Rx unit of the MAC after a reset.
1974 static void e1000_configure_rx(struct e1000_adapter
*adapter
)
1977 struct e1000_hw
*hw
= &adapter
->hw
;
1978 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
1980 rdlen
= adapter
->rx_ring
[0].count
*
1981 sizeof(struct e1000_rx_desc
);
1982 adapter
->clean_rx
= e1000_clean_rx_irq
;
1983 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1985 /* disable receives while setting up the descriptors */
1987 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
1989 /* set the Receive Delay Timer Register */
1990 ew32(RDTR
, adapter
->rx_int_delay
);
1992 if (hw
->mac_type
>= e1000_82540
) {
1993 ew32(RADV
, adapter
->rx_abs_int_delay
);
1994 if (adapter
->itr_setting
!= 0)
1995 ew32(ITR
, 1000000000 / (adapter
->itr
* 256));
1998 if (hw
->mac_type
>= e1000_82571
) {
1999 ctrl_ext
= er32(CTRL_EXT
);
2000 /* Reset delay timers after every interrupt */
2001 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2002 /* Auto-Mask interrupts upon ICR access */
2003 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2004 ew32(IAM
, 0xffffffff);
2005 ew32(CTRL_EXT
, ctrl_ext
);
2006 E1000_WRITE_FLUSH();
2009 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2010 * the Base and Length of the Rx Descriptor Ring */
2011 switch (adapter
->num_rx_queues
) {
2014 rdba
= adapter
->rx_ring
[0].dma
;
2016 ew32(RDBAH
, (rdba
>> 32));
2017 ew32(RDBAL
, (rdba
& 0x00000000ffffffffULL
));
2020 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
2021 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
2025 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2026 if (hw
->mac_type
>= e1000_82543
) {
2027 rxcsum
= er32(RXCSUM
);
2028 if (adapter
->rx_csum
)
2029 rxcsum
|= E1000_RXCSUM_TUOFL
;
2031 /* don't need to clear IPPCSE as it defaults to 0 */
2032 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2033 ew32(RXCSUM
, rxcsum
);
2036 /* Enable Receives */
2041 * e1000_free_tx_resources - Free Tx Resources per Queue
2042 * @adapter: board private structure
2043 * @tx_ring: Tx descriptor ring for a specific queue
2045 * Free all transmit software resources
2048 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2049 struct e1000_tx_ring
*tx_ring
)
2051 struct pci_dev
*pdev
= adapter
->pdev
;
2053 e1000_clean_tx_ring(adapter
, tx_ring
);
2055 vfree(tx_ring
->buffer_info
);
2056 tx_ring
->buffer_info
= NULL
;
2058 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2060 tx_ring
->desc
= NULL
;
2064 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2065 * @adapter: board private structure
2067 * Free all transmit software resources
2070 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2074 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2075 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2078 static void e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2079 struct e1000_buffer
*buffer_info
)
2081 if (buffer_info
->dma
) {
2082 pci_unmap_page(adapter
->pdev
,
2084 buffer_info
->length
,
2086 buffer_info
->dma
= 0;
2088 if (buffer_info
->skb
) {
2089 dev_kfree_skb_any(buffer_info
->skb
);
2090 buffer_info
->skb
= NULL
;
2092 /* buffer_info must be completely set up in the transmit path */
2096 * e1000_clean_tx_ring - Free Tx Buffers
2097 * @adapter: board private structure
2098 * @tx_ring: ring to be cleaned
2101 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2102 struct e1000_tx_ring
*tx_ring
)
2104 struct e1000_hw
*hw
= &adapter
->hw
;
2105 struct e1000_buffer
*buffer_info
;
2109 /* Free all the Tx ring sk_buffs */
2111 for (i
= 0; i
< tx_ring
->count
; i
++) {
2112 buffer_info
= &tx_ring
->buffer_info
[i
];
2113 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2116 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2117 memset(tx_ring
->buffer_info
, 0, size
);
2119 /* Zero out the descriptor ring */
2121 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2123 tx_ring
->next_to_use
= 0;
2124 tx_ring
->next_to_clean
= 0;
2125 tx_ring
->last_tx_tso
= 0;
2127 writel(0, hw
->hw_addr
+ tx_ring
->tdh
);
2128 writel(0, hw
->hw_addr
+ tx_ring
->tdt
);
2132 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2133 * @adapter: board private structure
2136 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2140 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2141 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2145 * e1000_free_rx_resources - Free Rx Resources
2146 * @adapter: board private structure
2147 * @rx_ring: ring to clean the resources from
2149 * Free all receive software resources
2152 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2153 struct e1000_rx_ring
*rx_ring
)
2155 struct pci_dev
*pdev
= adapter
->pdev
;
2157 e1000_clean_rx_ring(adapter
, rx_ring
);
2159 vfree(rx_ring
->buffer_info
);
2160 rx_ring
->buffer_info
= NULL
;
2162 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2164 rx_ring
->desc
= NULL
;
2168 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2169 * @adapter: board private structure
2171 * Free all receive software resources
2174 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2178 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2179 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2183 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2184 * @adapter: board private structure
2185 * @rx_ring: ring to free buffers from
2188 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2189 struct e1000_rx_ring
*rx_ring
)
2191 struct e1000_hw
*hw
= &adapter
->hw
;
2192 struct e1000_buffer
*buffer_info
;
2193 struct pci_dev
*pdev
= adapter
->pdev
;
2197 /* Free all the Rx ring sk_buffs */
2198 for (i
= 0; i
< rx_ring
->count
; i
++) {
2199 buffer_info
= &rx_ring
->buffer_info
[i
];
2200 if (buffer_info
->skb
) {
2201 pci_unmap_single(pdev
,
2203 buffer_info
->length
,
2204 PCI_DMA_FROMDEVICE
);
2206 dev_kfree_skb(buffer_info
->skb
);
2207 buffer_info
->skb
= NULL
;
2211 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2212 memset(rx_ring
->buffer_info
, 0, size
);
2214 /* Zero out the descriptor ring */
2216 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2218 rx_ring
->next_to_clean
= 0;
2219 rx_ring
->next_to_use
= 0;
2221 writel(0, hw
->hw_addr
+ rx_ring
->rdh
);
2222 writel(0, hw
->hw_addr
+ rx_ring
->rdt
);
2226 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2227 * @adapter: board private structure
2230 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2234 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2235 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2238 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2239 * and memory write and invalidate disabled for certain operations
2241 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2243 struct e1000_hw
*hw
= &adapter
->hw
;
2244 struct net_device
*netdev
= adapter
->netdev
;
2247 e1000_pci_clear_mwi(hw
);
2250 rctl
|= E1000_RCTL_RST
;
2252 E1000_WRITE_FLUSH();
2255 if (netif_running(netdev
))
2256 e1000_clean_all_rx_rings(adapter
);
2259 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2261 struct e1000_hw
*hw
= &adapter
->hw
;
2262 struct net_device
*netdev
= adapter
->netdev
;
2266 rctl
&= ~E1000_RCTL_RST
;
2268 E1000_WRITE_FLUSH();
2271 if (hw
->pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2272 e1000_pci_set_mwi(hw
);
2274 if (netif_running(netdev
)) {
2275 /* No need to loop, because 82542 supports only 1 queue */
2276 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2277 e1000_configure_rx(adapter
);
2278 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2283 * e1000_set_mac - Change the Ethernet Address of the NIC
2284 * @netdev: network interface device structure
2285 * @p: pointer to an address structure
2287 * Returns 0 on success, negative on failure
2290 static int e1000_set_mac(struct net_device
*netdev
, void *p
)
2292 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2293 struct e1000_hw
*hw
= &adapter
->hw
;
2294 struct sockaddr
*addr
= p
;
2296 if (!is_valid_ether_addr(addr
->sa_data
))
2297 return -EADDRNOTAVAIL
;
2299 /* 82542 2.0 needs to be in reset to write receive address registers */
2301 if (hw
->mac_type
== e1000_82542_rev2_0
)
2302 e1000_enter_82542_rst(adapter
);
2304 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2305 memcpy(hw
->mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2307 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2309 /* With 82571 controllers, LAA may be overwritten (with the default)
2310 * due to controller reset from the other port. */
2311 if (hw
->mac_type
== e1000_82571
) {
2312 /* activate the work around */
2313 hw
->laa_is_present
= 1;
2315 /* Hold a copy of the LAA in RAR[14] This is done so that
2316 * between the time RAR[0] gets clobbered and the time it
2317 * gets fixed (in e1000_watchdog), the actual LAA is in one
2318 * of the RARs and no incoming packets directed to this port
2319 * are dropped. Eventaully the LAA will be in RAR[0] and
2321 e1000_rar_set(hw
, hw
->mac_addr
,
2322 E1000_RAR_ENTRIES
- 1);
2325 if (hw
->mac_type
== e1000_82542_rev2_0
)
2326 e1000_leave_82542_rst(adapter
);
2332 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2333 * @netdev: network interface device structure
2335 * The set_rx_mode entry point is called whenever the unicast or multicast
2336 * address lists or the network interface flags are updated. This routine is
2337 * responsible for configuring the hardware for proper unicast, multicast,
2338 * promiscuous mode, and all-multi behavior.
2341 static void e1000_set_rx_mode(struct net_device
*netdev
)
2343 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2344 struct e1000_hw
*hw
= &adapter
->hw
;
2345 struct dev_addr_list
*uc_ptr
;
2346 struct dev_addr_list
*mc_ptr
;
2349 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2350 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2351 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2352 E1000_NUM_MTA_REGISTERS
;
2354 if (hw
->mac_type
== e1000_ich8lan
)
2355 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2357 /* reserve RAR[14] for LAA over-write work-around */
2358 if (hw
->mac_type
== e1000_82571
)
2361 /* Check for Promiscuous and All Multicast modes */
2365 if (netdev
->flags
& IFF_PROMISC
) {
2366 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2367 rctl
&= ~E1000_RCTL_VFE
;
2369 if (netdev
->flags
& IFF_ALLMULTI
) {
2370 rctl
|= E1000_RCTL_MPE
;
2372 rctl
&= ~E1000_RCTL_MPE
;
2374 if (adapter
->hw
.mac_type
!= e1000_ich8lan
)
2375 rctl
|= E1000_RCTL_VFE
;
2379 if (netdev
->uc_count
> rar_entries
- 1) {
2380 rctl
|= E1000_RCTL_UPE
;
2381 } else if (!(netdev
->flags
& IFF_PROMISC
)) {
2382 rctl
&= ~E1000_RCTL_UPE
;
2383 uc_ptr
= netdev
->uc_list
;
2388 /* 82542 2.0 needs to be in reset to write receive address registers */
2390 if (hw
->mac_type
== e1000_82542_rev2_0
)
2391 e1000_enter_82542_rst(adapter
);
2393 /* load the first 14 addresses into the exact filters 1-14. Unicast
2394 * addresses take precedence to avoid disabling unicast filtering
2397 * RAR 0 is used for the station MAC adddress
2398 * if there are not 14 addresses, go ahead and clear the filters
2399 * -- with 82571 controllers only 0-13 entries are filled here
2401 mc_ptr
= netdev
->mc_list
;
2403 for (i
= 1; i
< rar_entries
; i
++) {
2405 e1000_rar_set(hw
, uc_ptr
->da_addr
, i
);
2406 uc_ptr
= uc_ptr
->next
;
2407 } else if (mc_ptr
) {
2408 e1000_rar_set(hw
, mc_ptr
->da_addr
, i
);
2409 mc_ptr
= mc_ptr
->next
;
2411 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2412 E1000_WRITE_FLUSH();
2413 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2414 E1000_WRITE_FLUSH();
2417 WARN_ON(uc_ptr
!= NULL
);
2419 /* clear the old settings from the multicast hash table */
2421 for (i
= 0; i
< mta_reg_count
; i
++) {
2422 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2423 E1000_WRITE_FLUSH();
2426 /* load any remaining addresses into the hash table */
2428 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2429 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->da_addr
);
2430 e1000_mta_set(hw
, hash_value
);
2433 if (hw
->mac_type
== e1000_82542_rev2_0
)
2434 e1000_leave_82542_rst(adapter
);
2437 /* Need to wait a few seconds after link up to get diagnostic information from
2440 static void e1000_update_phy_info(unsigned long data
)
2442 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2443 struct e1000_hw
*hw
= &adapter
->hw
;
2444 e1000_phy_get_info(hw
, &adapter
->phy_info
);
2448 * e1000_82547_tx_fifo_stall - Timer Call-back
2449 * @data: pointer to adapter cast into an unsigned long
2452 static void e1000_82547_tx_fifo_stall(unsigned long data
)
2454 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2455 struct e1000_hw
*hw
= &adapter
->hw
;
2456 struct net_device
*netdev
= adapter
->netdev
;
2459 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2460 if ((er32(TDT
) == er32(TDH
)) &&
2461 (er32(TDFT
) == er32(TDFH
)) &&
2462 (er32(TDFTS
) == er32(TDFHS
))) {
2464 ew32(TCTL
, tctl
& ~E1000_TCTL_EN
);
2465 ew32(TDFT
, adapter
->tx_head_addr
);
2466 ew32(TDFH
, adapter
->tx_head_addr
);
2467 ew32(TDFTS
, adapter
->tx_head_addr
);
2468 ew32(TDFHS
, adapter
->tx_head_addr
);
2470 E1000_WRITE_FLUSH();
2472 adapter
->tx_fifo_head
= 0;
2473 atomic_set(&adapter
->tx_fifo_stall
, 0);
2474 netif_wake_queue(netdev
);
2476 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2482 * e1000_watchdog - Timer Call-back
2483 * @data: pointer to adapter cast into an unsigned long
2485 static void e1000_watchdog(unsigned long data
)
2487 struct e1000_adapter
*adapter
= (struct e1000_adapter
*)data
;
2488 struct e1000_hw
*hw
= &adapter
->hw
;
2489 struct net_device
*netdev
= adapter
->netdev
;
2490 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2494 ret_val
= e1000_check_for_link(hw
);
2495 if ((ret_val
== E1000_ERR_PHY
) &&
2496 (hw
->phy_type
== e1000_phy_igp_3
) &&
2497 (er32(CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2498 /* See e1000_kumeran_lock_loss_workaround() */
2500 "Gigabit has been disabled, downgrading speed\n");
2503 if (hw
->mac_type
== e1000_82573
) {
2504 e1000_enable_tx_pkt_filtering(hw
);
2505 if (adapter
->mng_vlan_id
!= hw
->mng_cookie
.vlan_id
)
2506 e1000_update_mng_vlan(adapter
);
2509 if ((hw
->media_type
== e1000_media_type_internal_serdes
) &&
2510 !(er32(TXCW
) & E1000_TXCW_ANE
))
2511 link
= !hw
->serdes_link_down
;
2513 link
= er32(STATUS
) & E1000_STATUS_LU
;
2516 if (!netif_carrier_ok(netdev
)) {
2519 e1000_get_speed_and_duplex(hw
,
2520 &adapter
->link_speed
,
2521 &adapter
->link_duplex
);
2524 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s, "
2525 "Flow Control: %s\n",
2526 adapter
->link_speed
,
2527 adapter
->link_duplex
== FULL_DUPLEX
?
2528 "Full Duplex" : "Half Duplex",
2529 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2530 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2531 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2532 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2534 /* tweak tx_queue_len according to speed/duplex
2535 * and adjust the timeout factor */
2536 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2537 adapter
->tx_timeout_factor
= 1;
2538 switch (adapter
->link_speed
) {
2541 netdev
->tx_queue_len
= 10;
2542 adapter
->tx_timeout_factor
= 8;
2546 netdev
->tx_queue_len
= 100;
2547 /* maybe add some timeout factor ? */
2551 if ((hw
->mac_type
== e1000_82571
||
2552 hw
->mac_type
== e1000_82572
) &&
2555 tarc0
= er32(TARC0
);
2556 tarc0
&= ~(1 << 21);
2560 /* disable TSO for pcie and 10/100 speeds, to avoid
2561 * some hardware issues */
2562 if (!adapter
->tso_force
&&
2563 hw
->bus_type
== e1000_bus_type_pci_express
){
2564 switch (adapter
->link_speed
) {
2568 "10/100 speed: disabling TSO\n");
2569 netdev
->features
&= ~NETIF_F_TSO
;
2570 netdev
->features
&= ~NETIF_F_TSO6
;
2573 netdev
->features
|= NETIF_F_TSO
;
2574 netdev
->features
|= NETIF_F_TSO6
;
2582 /* enable transmits in the hardware, need to do this
2583 * after setting TARC0 */
2585 tctl
|= E1000_TCTL_EN
;
2588 netif_carrier_on(netdev
);
2589 netif_wake_queue(netdev
);
2590 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2591 adapter
->smartspeed
= 0;
2593 /* make sure the receive unit is started */
2594 if (hw
->rx_needs_kicking
) {
2595 u32 rctl
= er32(RCTL
);
2596 ew32(RCTL
, rctl
| E1000_RCTL_EN
);
2600 if (netif_carrier_ok(netdev
)) {
2601 adapter
->link_speed
= 0;
2602 adapter
->link_duplex
= 0;
2603 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2604 netif_carrier_off(netdev
);
2605 netif_stop_queue(netdev
);
2606 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2608 /* 80003ES2LAN workaround--
2609 * For packet buffer work-around on link down event;
2610 * disable receives in the ISR and
2611 * reset device here in the watchdog
2613 if (hw
->mac_type
== e1000_80003es2lan
)
2615 schedule_work(&adapter
->reset_task
);
2618 e1000_smartspeed(adapter
);
2621 e1000_update_stats(adapter
);
2623 hw
->tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2624 adapter
->tpt_old
= adapter
->stats
.tpt
;
2625 hw
->collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2626 adapter
->colc_old
= adapter
->stats
.colc
;
2628 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2629 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2630 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2631 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2633 e1000_update_adaptive(hw
);
2635 if (!netif_carrier_ok(netdev
)) {
2636 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2637 /* We've lost link, so the controller stops DMA,
2638 * but we've got queued Tx work that's never going
2639 * to get done, so reset controller to flush Tx.
2640 * (Do the reset outside of interrupt context). */
2641 adapter
->tx_timeout_count
++;
2642 schedule_work(&adapter
->reset_task
);
2646 /* Cause software interrupt to ensure rx ring is cleaned */
2647 ew32(ICS
, E1000_ICS_RXDMT0
);
2649 /* Force detection of hung controller every watchdog period */
2650 adapter
->detect_tx_hung
= true;
2652 /* With 82571 controllers, LAA may be overwritten due to controller
2653 * reset from the other port. Set the appropriate LAA in RAR[0] */
2654 if (hw
->mac_type
== e1000_82571
&& hw
->laa_is_present
)
2655 e1000_rar_set(hw
, hw
->mac_addr
, 0);
2657 /* Reset the timer */
2658 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2661 enum latency_range
{
2665 latency_invalid
= 255
2669 * e1000_update_itr - update the dynamic ITR value based on statistics
2670 * Stores a new ITR value based on packets and byte
2671 * counts during the last interrupt. The advantage of per interrupt
2672 * computation is faster updates and more accurate ITR for the current
2673 * traffic pattern. Constants in this function were computed
2674 * based on theoretical maximum wire speed and thresholds were set based
2675 * on testing data as well as attempting to minimize response time
2676 * while increasing bulk throughput.
2677 * this functionality is controlled by the InterruptThrottleRate module
2678 * parameter (see e1000_param.c)
2679 * @adapter: pointer to adapter
2680 * @itr_setting: current adapter->itr
2681 * @packets: the number of packets during this measurement interval
2682 * @bytes: the number of bytes during this measurement interval
2684 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2685 u16 itr_setting
, int packets
, int bytes
)
2687 unsigned int retval
= itr_setting
;
2688 struct e1000_hw
*hw
= &adapter
->hw
;
2690 if (unlikely(hw
->mac_type
< e1000_82540
))
2691 goto update_itr_done
;
2694 goto update_itr_done
;
2696 switch (itr_setting
) {
2697 case lowest_latency
:
2698 /* jumbo frames get bulk treatment*/
2699 if (bytes
/packets
> 8000)
2700 retval
= bulk_latency
;
2701 else if ((packets
< 5) && (bytes
> 512))
2702 retval
= low_latency
;
2704 case low_latency
: /* 50 usec aka 20000 ints/s */
2705 if (bytes
> 10000) {
2706 /* jumbo frames need bulk latency setting */
2707 if (bytes
/packets
> 8000)
2708 retval
= bulk_latency
;
2709 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2710 retval
= bulk_latency
;
2711 else if ((packets
> 35))
2712 retval
= lowest_latency
;
2713 } else if (bytes
/packets
> 2000)
2714 retval
= bulk_latency
;
2715 else if (packets
<= 2 && bytes
< 512)
2716 retval
= lowest_latency
;
2718 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2719 if (bytes
> 25000) {
2721 retval
= low_latency
;
2722 } else if (bytes
< 6000) {
2723 retval
= low_latency
;
2732 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2734 struct e1000_hw
*hw
= &adapter
->hw
;
2736 u32 new_itr
= adapter
->itr
;
2738 if (unlikely(hw
->mac_type
< e1000_82540
))
2741 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2742 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2748 adapter
->tx_itr
= e1000_update_itr(adapter
,
2750 adapter
->total_tx_packets
,
2751 adapter
->total_tx_bytes
);
2752 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2753 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2754 adapter
->tx_itr
= low_latency
;
2756 adapter
->rx_itr
= e1000_update_itr(adapter
,
2758 adapter
->total_rx_packets
,
2759 adapter
->total_rx_bytes
);
2760 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2761 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2762 adapter
->rx_itr
= low_latency
;
2764 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2766 switch (current_itr
) {
2767 /* counts and packets in update_itr are dependent on these numbers */
2768 case lowest_latency
:
2772 new_itr
= 20000; /* aka hwitr = ~200 */
2782 if (new_itr
!= adapter
->itr
) {
2783 /* this attempts to bias the interrupt rate towards Bulk
2784 * by adding intermediate steps when interrupt rate is
2786 new_itr
= new_itr
> adapter
->itr
?
2787 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2789 adapter
->itr
= new_itr
;
2790 ew32(ITR
, 1000000000 / (new_itr
* 256));
2796 #define E1000_TX_FLAGS_CSUM 0x00000001
2797 #define E1000_TX_FLAGS_VLAN 0x00000002
2798 #define E1000_TX_FLAGS_TSO 0x00000004
2799 #define E1000_TX_FLAGS_IPV4 0x00000008
2800 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2801 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2803 static int e1000_tso(struct e1000_adapter
*adapter
,
2804 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2806 struct e1000_context_desc
*context_desc
;
2807 struct e1000_buffer
*buffer_info
;
2810 u16 ipcse
= 0, tucse
, mss
;
2811 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2814 if (skb_is_gso(skb
)) {
2815 if (skb_header_cloned(skb
)) {
2816 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2821 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2822 mss
= skb_shinfo(skb
)->gso_size
;
2823 if (skb
->protocol
== htons(ETH_P_IP
)) {
2824 struct iphdr
*iph
= ip_hdr(skb
);
2827 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2831 cmd_length
= E1000_TXD_CMD_IP
;
2832 ipcse
= skb_transport_offset(skb
) - 1;
2833 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2834 ipv6_hdr(skb
)->payload_len
= 0;
2835 tcp_hdr(skb
)->check
=
2836 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2837 &ipv6_hdr(skb
)->daddr
,
2841 ipcss
= skb_network_offset(skb
);
2842 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
2843 tucss
= skb_transport_offset(skb
);
2844 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
2847 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2848 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2850 i
= tx_ring
->next_to_use
;
2851 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2852 buffer_info
= &tx_ring
->buffer_info
[i
];
2854 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2855 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2856 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2857 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2858 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2859 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2860 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2861 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2862 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2864 buffer_info
->time_stamp
= jiffies
;
2865 buffer_info
->next_to_watch
= i
;
2867 if (++i
== tx_ring
->count
) i
= 0;
2868 tx_ring
->next_to_use
= i
;
2875 static bool e1000_tx_csum(struct e1000_adapter
*adapter
,
2876 struct e1000_tx_ring
*tx_ring
, struct sk_buff
*skb
)
2878 struct e1000_context_desc
*context_desc
;
2879 struct e1000_buffer
*buffer_info
;
2882 u32 cmd_len
= E1000_TXD_CMD_DEXT
;
2884 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
2887 switch (skb
->protocol
) {
2888 case __constant_htons(ETH_P_IP
):
2889 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
2890 cmd_len
|= E1000_TXD_CMD_TCP
;
2892 case __constant_htons(ETH_P_IPV6
):
2893 /* XXX not handling all IPV6 headers */
2894 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
2895 cmd_len
|= E1000_TXD_CMD_TCP
;
2898 if (unlikely(net_ratelimit()))
2899 DPRINTK(DRV
, WARNING
,
2900 "checksum_partial proto=%x!\n", skb
->protocol
);
2904 css
= skb_transport_offset(skb
);
2906 i
= tx_ring
->next_to_use
;
2907 buffer_info
= &tx_ring
->buffer_info
[i
];
2908 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2910 context_desc
->lower_setup
.ip_config
= 0;
2911 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2912 context_desc
->upper_setup
.tcp_fields
.tucso
=
2913 css
+ skb
->csum_offset
;
2914 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2915 context_desc
->tcp_seg_setup
.data
= 0;
2916 context_desc
->cmd_and_length
= cpu_to_le32(cmd_len
);
2918 buffer_info
->time_stamp
= jiffies
;
2919 buffer_info
->next_to_watch
= i
;
2921 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2922 tx_ring
->next_to_use
= i
;
2927 #define E1000_MAX_TXD_PWR 12
2928 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2930 static int e1000_tx_map(struct e1000_adapter
*adapter
,
2931 struct e1000_tx_ring
*tx_ring
,
2932 struct sk_buff
*skb
, unsigned int first
,
2933 unsigned int max_per_txd
, unsigned int nr_frags
,
2936 struct e1000_hw
*hw
= &adapter
->hw
;
2937 struct e1000_buffer
*buffer_info
;
2938 unsigned int len
= skb
->len
;
2939 unsigned int offset
= 0, size
, count
= 0, i
;
2941 len
-= skb
->data_len
;
2943 i
= tx_ring
->next_to_use
;
2946 buffer_info
= &tx_ring
->buffer_info
[i
];
2947 size
= min(len
, max_per_txd
);
2948 /* Workaround for Controller erratum --
2949 * descriptor for non-tso packet in a linear SKB that follows a
2950 * tso gets written back prematurely before the data is fully
2951 * DMA'd to the controller */
2952 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2954 tx_ring
->last_tx_tso
= 0;
2958 /* Workaround for premature desc write-backs
2959 * in TSO mode. Append 4-byte sentinel desc */
2960 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2962 /* work-around for errata 10 and it applies
2963 * to all controllers in PCI-X mode
2964 * The fix is to make sure that the first descriptor of a
2965 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2967 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
2968 (size
> 2015) && count
== 0))
2971 /* Workaround for potential 82544 hang in PCI-X. Avoid
2972 * terminating buffers within evenly-aligned dwords. */
2973 if (unlikely(adapter
->pcix_82544
&&
2974 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2978 buffer_info
->length
= size
;
2980 pci_map_single(adapter
->pdev
,
2984 buffer_info
->time_stamp
= jiffies
;
2985 buffer_info
->next_to_watch
= i
;
2990 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2993 for (f
= 0; f
< nr_frags
; f
++) {
2994 struct skb_frag_struct
*frag
;
2996 frag
= &skb_shinfo(skb
)->frags
[f
];
2998 offset
= frag
->page_offset
;
3001 buffer_info
= &tx_ring
->buffer_info
[i
];
3002 size
= min(len
, max_per_txd
);
3003 /* Workaround for premature desc write-backs
3004 * in TSO mode. Append 4-byte sentinel desc */
3005 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
3007 /* Workaround for potential 82544 hang in PCI-X.
3008 * Avoid terminating buffers within evenly-aligned
3010 if (unlikely(adapter
->pcix_82544
&&
3011 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
3015 buffer_info
->length
= size
;
3017 pci_map_page(adapter
->pdev
,
3022 buffer_info
->time_stamp
= jiffies
;
3023 buffer_info
->next_to_watch
= i
;
3028 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3032 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
3033 tx_ring
->buffer_info
[i
].skb
= skb
;
3034 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3039 static void e1000_tx_queue(struct e1000_adapter
*adapter
,
3040 struct e1000_tx_ring
*tx_ring
, int tx_flags
,
3043 struct e1000_hw
*hw
= &adapter
->hw
;
3044 struct e1000_tx_desc
*tx_desc
= NULL
;
3045 struct e1000_buffer
*buffer_info
;
3046 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3049 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3050 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3052 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3054 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3055 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3058 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3059 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3060 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3063 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3064 txd_lower
|= E1000_TXD_CMD_VLE
;
3065 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3068 i
= tx_ring
->next_to_use
;
3071 buffer_info
= &tx_ring
->buffer_info
[i
];
3072 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3073 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3074 tx_desc
->lower
.data
=
3075 cpu_to_le32(txd_lower
| buffer_info
->length
);
3076 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3077 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3080 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3082 /* Force memory writes to complete before letting h/w
3083 * know there are new descriptors to fetch. (Only
3084 * applicable for weak-ordered memory model archs,
3085 * such as IA-64). */
3088 tx_ring
->next_to_use
= i
;
3089 writel(i
, hw
->hw_addr
+ tx_ring
->tdt
);
3090 /* we need this if more than one processor can write to our tail
3091 * at a time, it syncronizes IO on IA64/Altix systems */
3096 * 82547 workaround to avoid controller hang in half-duplex environment.
3097 * The workaround is to avoid queuing a large packet that would span
3098 * the internal Tx FIFO ring boundary by notifying the stack to resend
3099 * the packet at a later time. This gives the Tx FIFO an opportunity to
3100 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3101 * to the beginning of the Tx FIFO.
3104 #define E1000_FIFO_HDR 0x10
3105 #define E1000_82547_PAD_LEN 0x3E0
3107 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
3108 struct sk_buff
*skb
)
3110 u32 fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3111 u32 skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3113 skb_fifo_len
= ALIGN(skb_fifo_len
, E1000_FIFO_HDR
);
3115 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3116 goto no_fifo_stall_required
;
3118 if (atomic_read(&adapter
->tx_fifo_stall
))
3121 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3122 atomic_set(&adapter
->tx_fifo_stall
, 1);
3126 no_fifo_stall_required
:
3127 adapter
->tx_fifo_head
+= skb_fifo_len
;
3128 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3129 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3133 #define MINIMUM_DHCP_PACKET_SIZE 282
3134 static int e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
,
3135 struct sk_buff
*skb
)
3137 struct e1000_hw
*hw
= &adapter
->hw
;
3139 if (vlan_tx_tag_present(skb
)) {
3140 if (!((vlan_tx_tag_get(skb
) == hw
->mng_cookie
.vlan_id
) &&
3141 ( hw
->mng_cookie
.status
&
3142 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3145 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3146 struct ethhdr
*eth
= (struct ethhdr
*)skb
->data
;
3147 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3148 const struct iphdr
*ip
=
3149 (struct iphdr
*)((u8
*)skb
->data
+14);
3150 if (IPPROTO_UDP
== ip
->protocol
) {
3151 struct udphdr
*udp
=
3152 (struct udphdr
*)((u8
*)ip
+
3154 if (ntohs(udp
->dest
) == 67) {
3155 offset
= (u8
*)udp
+ 8 - skb
->data
;
3156 length
= skb
->len
- offset
;
3158 return e1000_mng_write_dhcp_info(hw
,
3168 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3170 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3171 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3173 netif_stop_queue(netdev
);
3174 /* Herbert's original patch had:
3175 * smp_mb__after_netif_stop_queue();
3176 * but since that doesn't exist yet, just open code it. */
3179 /* We need to check again in a case another CPU has just
3180 * made room available. */
3181 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3185 netif_start_queue(netdev
);
3186 ++adapter
->restart_queue
;
3190 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3191 struct e1000_tx_ring
*tx_ring
, int size
)
3193 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3195 return __e1000_maybe_stop_tx(netdev
, size
);
3198 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3199 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3201 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3202 struct e1000_hw
*hw
= &adapter
->hw
;
3203 struct e1000_tx_ring
*tx_ring
;
3204 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3205 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3206 unsigned int tx_flags
= 0;
3207 unsigned int len
= skb
->len
- skb
->data_len
;
3208 unsigned long flags
;
3209 unsigned int nr_frags
;
3215 /* This goes back to the question of how to logically map a tx queue
3216 * to a flow. Right now, performance is impacted slightly negatively
3217 * if using multiple tx queues. If the stack breaks away from a
3218 * single qdisc implementation, we can look at this again. */
3219 tx_ring
= adapter
->tx_ring
;
3221 if (unlikely(skb
->len
<= 0)) {
3222 dev_kfree_skb_any(skb
);
3223 return NETDEV_TX_OK
;
3226 /* 82571 and newer doesn't need the workaround that limited descriptor
3228 if (hw
->mac_type
>= e1000_82571
)
3231 mss
= skb_shinfo(skb
)->gso_size
;
3232 /* The controller does a simple calculation to
3233 * make sure there is enough room in the FIFO before
3234 * initiating the DMA for each buffer. The calc is:
3235 * 4 = ceil(buffer len/mss). To make sure we don't
3236 * overrun the FIFO, adjust the max buffer len if mss
3240 max_per_txd
= min(mss
<< 2, max_per_txd
);
3241 max_txd_pwr
= fls(max_per_txd
) - 1;
3243 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3244 * points to just header, pull a few bytes of payload from
3245 * frags into skb->data */
3246 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3247 if (skb
->data_len
&& hdr_len
== len
) {
3248 switch (hw
->mac_type
) {
3249 unsigned int pull_size
;
3251 /* Make sure we have room to chop off 4 bytes,
3252 * and that the end alignment will work out to
3253 * this hardware's requirements
3254 * NOTE: this is a TSO only workaround
3255 * if end byte alignment not correct move us
3256 * into the next dword */
3257 if ((unsigned long)(skb_tail_pointer(skb
) - 1) & 4)
3264 pull_size
= min((unsigned int)4, skb
->data_len
);
3265 if (!__pskb_pull_tail(skb
, pull_size
)) {
3267 "__pskb_pull_tail failed.\n");
3268 dev_kfree_skb_any(skb
);
3269 return NETDEV_TX_OK
;
3271 len
= skb
->len
- skb
->data_len
;
3280 /* reserve a descriptor for the offload context */
3281 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3285 /* Controller Erratum workaround */
3286 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3289 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3291 if (adapter
->pcix_82544
)
3294 /* work-around for errata 10 and it applies to all controllers
3295 * in PCI-X mode, so add one more descriptor to the count
3297 if (unlikely((hw
->bus_type
== e1000_bus_type_pcix
) &&
3301 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3302 for (f
= 0; f
< nr_frags
; f
++)
3303 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3305 if (adapter
->pcix_82544
)
3309 if (hw
->tx_pkt_filtering
&&
3310 (hw
->mac_type
== e1000_82573
))
3311 e1000_transfer_dhcp_info(adapter
, skb
);
3313 if (!spin_trylock_irqsave(&tx_ring
->tx_lock
, flags
))
3314 /* Collision - tell upper layer to requeue */
3315 return NETDEV_TX_LOCKED
;
3317 /* need: count + 2 desc gap to keep tail from touching
3318 * head, otherwise try next time */
3319 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3320 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3321 return NETDEV_TX_BUSY
;
3324 if (unlikely(hw
->mac_type
== e1000_82547
)) {
3325 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3326 netif_stop_queue(netdev
);
3327 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3328 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3329 return NETDEV_TX_BUSY
;
3333 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3334 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3335 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3338 first
= tx_ring
->next_to_use
;
3340 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3342 dev_kfree_skb_any(skb
);
3343 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3344 return NETDEV_TX_OK
;
3348 tx_ring
->last_tx_tso
= 1;
3349 tx_flags
|= E1000_TX_FLAGS_TSO
;
3350 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3351 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3353 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3354 * 82571 hardware supports TSO capabilities for IPv6 as well...
3355 * no longer assume, we must. */
3356 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3357 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3359 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3360 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3361 max_per_txd
, nr_frags
, mss
));
3363 netdev
->trans_start
= jiffies
;
3365 /* Make sure there is space in the ring for the next send. */
3366 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3368 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3369 return NETDEV_TX_OK
;
3373 * e1000_tx_timeout - Respond to a Tx Hang
3374 * @netdev: network interface device structure
3377 static void e1000_tx_timeout(struct net_device
*netdev
)
3379 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3381 /* Do the reset outside of interrupt context */
3382 adapter
->tx_timeout_count
++;
3383 schedule_work(&adapter
->reset_task
);
3386 static void e1000_reset_task(struct work_struct
*work
)
3388 struct e1000_adapter
*adapter
=
3389 container_of(work
, struct e1000_adapter
, reset_task
);
3391 e1000_reinit_locked(adapter
);
3395 * e1000_get_stats - Get System Network Statistics
3396 * @netdev: network interface device structure
3398 * Returns the address of the device statistics structure.
3399 * The statistics are actually updated from the timer callback.
3402 static struct net_device_stats
*e1000_get_stats(struct net_device
*netdev
)
3404 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3406 /* only return the current stats */
3407 return &adapter
->net_stats
;
3411 * e1000_change_mtu - Change the Maximum Transfer Unit
3412 * @netdev: network interface device structure
3413 * @new_mtu: new value for maximum frame size
3415 * Returns 0 on success, negative on failure
3418 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3420 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3421 struct e1000_hw
*hw
= &adapter
->hw
;
3422 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3423 u16 eeprom_data
= 0;
3425 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3426 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3427 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3431 /* Adapter-specific max frame size limits. */
3432 switch (hw
->mac_type
) {
3433 case e1000_undefined
... e1000_82542_rev2_1
:
3435 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3436 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3441 /* Jumbo Frames not supported if:
3442 * - this is not an 82573L device
3443 * - ASPM is enabled in any way (0x1A bits 3:2) */
3444 e1000_read_eeprom(hw
, EEPROM_INIT_3GIO_3
, 1,
3446 if ((hw
->device_id
!= E1000_DEV_ID_82573L
) ||
3447 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3448 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3450 "Jumbo Frames not supported.\n");
3455 /* ERT will be enabled later to enable wire speed receives */
3457 /* fall through to get support */
3460 case e1000_80003es2lan
:
3461 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3462 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3463 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3468 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3472 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3473 * means we reserve 2 more, this pushes us to allocate from the next
3475 * i.e. RXBUFFER_2048 --> size-4096 slab */
3477 if (max_frame
<= E1000_RXBUFFER_256
)
3478 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3479 else if (max_frame
<= E1000_RXBUFFER_512
)
3480 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3481 else if (max_frame
<= E1000_RXBUFFER_1024
)
3482 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3483 else if (max_frame
<= E1000_RXBUFFER_2048
)
3484 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3485 else if (max_frame
<= E1000_RXBUFFER_4096
)
3486 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3487 else if (max_frame
<= E1000_RXBUFFER_8192
)
3488 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3489 else if (max_frame
<= E1000_RXBUFFER_16384
)
3490 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3492 /* adjust allocation if LPE protects us, and we aren't using SBP */
3493 if (!hw
->tbi_compatibility_on
&&
3494 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3495 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3496 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3498 netdev
->mtu
= new_mtu
;
3499 hw
->max_frame_size
= max_frame
;
3501 if (netif_running(netdev
))
3502 e1000_reinit_locked(adapter
);
3508 * e1000_update_stats - Update the board statistics counters
3509 * @adapter: board private structure
3512 void e1000_update_stats(struct e1000_adapter
*adapter
)
3514 struct e1000_hw
*hw
= &adapter
->hw
;
3515 struct pci_dev
*pdev
= adapter
->pdev
;
3516 unsigned long flags
;
3519 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3522 * Prevent stats update while adapter is being reset, or if the pci
3523 * connection is down.
3525 if (adapter
->link_speed
== 0)
3527 if (pci_channel_offline(pdev
))
3530 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3532 /* these counters are modified from e1000_tbi_adjust_stats,
3533 * called from the interrupt context, so they must only
3534 * be written while holding adapter->stats_lock
3537 adapter
->stats
.crcerrs
+= er32(CRCERRS
);
3538 adapter
->stats
.gprc
+= er32(GPRC
);
3539 adapter
->stats
.gorcl
+= er32(GORCL
);
3540 adapter
->stats
.gorch
+= er32(GORCH
);
3541 adapter
->stats
.bprc
+= er32(BPRC
);
3542 adapter
->stats
.mprc
+= er32(MPRC
);
3543 adapter
->stats
.roc
+= er32(ROC
);
3545 if (hw
->mac_type
!= e1000_ich8lan
) {
3546 adapter
->stats
.prc64
+= er32(PRC64
);
3547 adapter
->stats
.prc127
+= er32(PRC127
);
3548 adapter
->stats
.prc255
+= er32(PRC255
);
3549 adapter
->stats
.prc511
+= er32(PRC511
);
3550 adapter
->stats
.prc1023
+= er32(PRC1023
);
3551 adapter
->stats
.prc1522
+= er32(PRC1522
);
3554 adapter
->stats
.symerrs
+= er32(SYMERRS
);
3555 adapter
->stats
.mpc
+= er32(MPC
);
3556 adapter
->stats
.scc
+= er32(SCC
);
3557 adapter
->stats
.ecol
+= er32(ECOL
);
3558 adapter
->stats
.mcc
+= er32(MCC
);
3559 adapter
->stats
.latecol
+= er32(LATECOL
);
3560 adapter
->stats
.dc
+= er32(DC
);
3561 adapter
->stats
.sec
+= er32(SEC
);
3562 adapter
->stats
.rlec
+= er32(RLEC
);
3563 adapter
->stats
.xonrxc
+= er32(XONRXC
);
3564 adapter
->stats
.xontxc
+= er32(XONTXC
);
3565 adapter
->stats
.xoffrxc
+= er32(XOFFRXC
);
3566 adapter
->stats
.xofftxc
+= er32(XOFFTXC
);
3567 adapter
->stats
.fcruc
+= er32(FCRUC
);
3568 adapter
->stats
.gptc
+= er32(GPTC
);
3569 adapter
->stats
.gotcl
+= er32(GOTCL
);
3570 adapter
->stats
.gotch
+= er32(GOTCH
);
3571 adapter
->stats
.rnbc
+= er32(RNBC
);
3572 adapter
->stats
.ruc
+= er32(RUC
);
3573 adapter
->stats
.rfc
+= er32(RFC
);
3574 adapter
->stats
.rjc
+= er32(RJC
);
3575 adapter
->stats
.torl
+= er32(TORL
);
3576 adapter
->stats
.torh
+= er32(TORH
);
3577 adapter
->stats
.totl
+= er32(TOTL
);
3578 adapter
->stats
.toth
+= er32(TOTH
);
3579 adapter
->stats
.tpr
+= er32(TPR
);
3581 if (hw
->mac_type
!= e1000_ich8lan
) {
3582 adapter
->stats
.ptc64
+= er32(PTC64
);
3583 adapter
->stats
.ptc127
+= er32(PTC127
);
3584 adapter
->stats
.ptc255
+= er32(PTC255
);
3585 adapter
->stats
.ptc511
+= er32(PTC511
);
3586 adapter
->stats
.ptc1023
+= er32(PTC1023
);
3587 adapter
->stats
.ptc1522
+= er32(PTC1522
);
3590 adapter
->stats
.mptc
+= er32(MPTC
);
3591 adapter
->stats
.bptc
+= er32(BPTC
);
3593 /* used for adaptive IFS */
3595 hw
->tx_packet_delta
= er32(TPT
);
3596 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3597 hw
->collision_delta
= er32(COLC
);
3598 adapter
->stats
.colc
+= hw
->collision_delta
;
3600 if (hw
->mac_type
>= e1000_82543
) {
3601 adapter
->stats
.algnerrc
+= er32(ALGNERRC
);
3602 adapter
->stats
.rxerrc
+= er32(RXERRC
);
3603 adapter
->stats
.tncrs
+= er32(TNCRS
);
3604 adapter
->stats
.cexterr
+= er32(CEXTERR
);
3605 adapter
->stats
.tsctc
+= er32(TSCTC
);
3606 adapter
->stats
.tsctfc
+= er32(TSCTFC
);
3608 if (hw
->mac_type
> e1000_82547_rev_2
) {
3609 adapter
->stats
.iac
+= er32(IAC
);
3610 adapter
->stats
.icrxoc
+= er32(ICRXOC
);
3612 if (hw
->mac_type
!= e1000_ich8lan
) {
3613 adapter
->stats
.icrxptc
+= er32(ICRXPTC
);
3614 adapter
->stats
.icrxatc
+= er32(ICRXATC
);
3615 adapter
->stats
.ictxptc
+= er32(ICTXPTC
);
3616 adapter
->stats
.ictxatc
+= er32(ICTXATC
);
3617 adapter
->stats
.ictxqec
+= er32(ICTXQEC
);
3618 adapter
->stats
.ictxqmtc
+= er32(ICTXQMTC
);
3619 adapter
->stats
.icrxdmtc
+= er32(ICRXDMTC
);
3623 /* Fill out the OS statistics structure */
3624 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3625 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3629 /* RLEC on some newer hardware can be incorrect so build
3630 * our own version based on RUC and ROC */
3631 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3632 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3633 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3634 adapter
->stats
.cexterr
;
3635 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3636 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3637 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3638 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3639 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3642 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3643 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3644 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3645 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3646 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3647 if (hw
->bad_tx_carr_stats_fd
&&
3648 adapter
->link_duplex
== FULL_DUPLEX
) {
3649 adapter
->net_stats
.tx_carrier_errors
= 0;
3650 adapter
->stats
.tncrs
= 0;
3653 /* Tx Dropped needs to be maintained elsewhere */
3656 if (hw
->media_type
== e1000_media_type_copper
) {
3657 if ((adapter
->link_speed
== SPEED_1000
) &&
3658 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3659 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3660 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3663 if ((hw
->mac_type
<= e1000_82546
) &&
3664 (hw
->phy_type
== e1000_phy_m88
) &&
3665 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3666 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3669 /* Management Stats */
3670 if (hw
->has_smbus
) {
3671 adapter
->stats
.mgptc
+= er32(MGTPTC
);
3672 adapter
->stats
.mgprc
+= er32(MGTPRC
);
3673 adapter
->stats
.mgpdc
+= er32(MGTPDC
);
3676 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3680 * e1000_intr_msi - Interrupt Handler
3681 * @irq: interrupt number
3682 * @data: pointer to a network interface device structure
3685 static irqreturn_t
e1000_intr_msi(int irq
, void *data
)
3687 struct net_device
*netdev
= data
;
3688 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3689 struct e1000_hw
*hw
= &adapter
->hw
;
3690 u32 icr
= er32(ICR
);
3692 /* in NAPI mode read ICR disables interrupts using IAM */
3694 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3695 hw
->get_link_status
= 1;
3696 /* 80003ES2LAN workaround-- For packet buffer work-around on
3697 * link down event; disable receives here in the ISR and reset
3698 * adapter in watchdog */
3699 if (netif_carrier_ok(netdev
) &&
3700 (hw
->mac_type
== e1000_80003es2lan
)) {
3701 /* disable receives */
3702 u32 rctl
= er32(RCTL
);
3703 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3705 /* guard against interrupt when we're going down */
3706 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3707 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3710 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3711 adapter
->total_tx_bytes
= 0;
3712 adapter
->total_tx_packets
= 0;
3713 adapter
->total_rx_bytes
= 0;
3714 adapter
->total_rx_packets
= 0;
3715 __netif_rx_schedule(netdev
, &adapter
->napi
);
3717 e1000_irq_enable(adapter
);
3723 * e1000_intr - Interrupt Handler
3724 * @irq: interrupt number
3725 * @data: pointer to a network interface device structure
3728 static irqreturn_t
e1000_intr(int irq
, void *data
)
3730 struct net_device
*netdev
= data
;
3731 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3732 struct e1000_hw
*hw
= &adapter
->hw
;
3733 u32 rctl
, icr
= er32(ICR
);
3736 return IRQ_NONE
; /* Not our interrupt */
3738 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3739 * not set, then the adapter didn't send an interrupt */
3740 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3741 !(icr
& E1000_ICR_INT_ASSERTED
)))
3744 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3745 * need for the IMC write */
3747 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3748 hw
->get_link_status
= 1;
3749 /* 80003ES2LAN workaround--
3750 * For packet buffer work-around on link down event;
3751 * disable receives here in the ISR and
3752 * reset adapter in watchdog
3754 if (netif_carrier_ok(netdev
) &&
3755 (hw
->mac_type
== e1000_80003es2lan
)) {
3756 /* disable receives */
3758 ew32(RCTL
, rctl
& ~E1000_RCTL_EN
);
3760 /* guard against interrupt when we're going down */
3761 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3762 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3765 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3766 /* disable interrupts, without the synchronize_irq bit */
3768 E1000_WRITE_FLUSH();
3770 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3771 adapter
->total_tx_bytes
= 0;
3772 adapter
->total_tx_packets
= 0;
3773 adapter
->total_rx_bytes
= 0;
3774 adapter
->total_rx_packets
= 0;
3775 __netif_rx_schedule(netdev
, &adapter
->napi
);
3777 /* this really should not happen! if it does it is basically a
3778 * bug, but not a hard error, so enable ints and continue */
3779 e1000_irq_enable(adapter
);
3785 * e1000_clean - NAPI Rx polling callback
3786 * @adapter: board private structure
3788 static int e1000_clean(struct napi_struct
*napi
, int budget
)
3790 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
3791 struct net_device
*poll_dev
= adapter
->netdev
;
3792 int tx_cleaned
= 0, work_done
= 0;
3794 /* Must NOT use netdev_priv macro here. */
3795 adapter
= poll_dev
->priv
;
3797 /* e1000_clean is called per-cpu. This lock protects
3798 * tx_ring[0] from being cleaned by multiple cpus
3799 * simultaneously. A failure obtaining the lock means
3800 * tx_ring[0] is currently being cleaned anyway. */
3801 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3802 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3803 &adapter
->tx_ring
[0]);
3804 spin_unlock(&adapter
->tx_queue_lock
);
3807 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3808 &work_done
, budget
);
3813 /* If budget not fully consumed, exit the polling mode */
3814 if (work_done
< budget
) {
3815 if (likely(adapter
->itr_setting
& 3))
3816 e1000_set_itr(adapter
);
3817 netif_rx_complete(poll_dev
, napi
);
3818 e1000_irq_enable(adapter
);
3825 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3826 * @adapter: board private structure
3828 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3829 struct e1000_tx_ring
*tx_ring
)
3831 struct e1000_hw
*hw
= &adapter
->hw
;
3832 struct net_device
*netdev
= adapter
->netdev
;
3833 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3834 struct e1000_buffer
*buffer_info
;
3835 unsigned int i
, eop
;
3836 unsigned int count
= 0;
3837 bool cleaned
= false;
3838 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
3840 i
= tx_ring
->next_to_clean
;
3841 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3842 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3844 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3845 for (cleaned
= false; !cleaned
; ) {
3846 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3847 buffer_info
= &tx_ring
->buffer_info
[i
];
3848 cleaned
= (i
== eop
);
3851 struct sk_buff
*skb
= buffer_info
->skb
;
3852 unsigned int segs
, bytecount
;
3853 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
3854 /* multiply data chunks by size of headers */
3855 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
3857 total_tx_packets
+= segs
;
3858 total_tx_bytes
+= bytecount
;
3860 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3861 tx_desc
->upper
.data
= 0;
3863 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3866 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3867 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3868 #define E1000_TX_WEIGHT 64
3869 /* weight of a sort for tx, to avoid endless transmit cleanup */
3870 if (count
++ == E1000_TX_WEIGHT
)
3874 tx_ring
->next_to_clean
= i
;
3876 #define TX_WAKE_THRESHOLD 32
3877 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
3878 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
3879 /* Make sure that anybody stopping the queue after this
3880 * sees the new next_to_clean.
3883 if (netif_queue_stopped(netdev
)) {
3884 netif_wake_queue(netdev
);
3885 ++adapter
->restart_queue
;
3889 if (adapter
->detect_tx_hung
) {
3890 /* Detect a transmit hang in hardware, this serializes the
3891 * check with the clearing of time_stamp and movement of i */
3892 adapter
->detect_tx_hung
= false;
3893 if (tx_ring
->buffer_info
[eop
].dma
&&
3894 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3895 (adapter
->tx_timeout_factor
* HZ
))
3896 && !(er32(STATUS
) & E1000_STATUS_TXOFF
)) {
3898 /* detected Tx unit hang */
3899 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3903 " next_to_use <%x>\n"
3904 " next_to_clean <%x>\n"
3905 "buffer_info[next_to_clean]\n"
3906 " time_stamp <%lx>\n"
3907 " next_to_watch <%x>\n"
3909 " next_to_watch.status <%x>\n",
3910 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3911 sizeof(struct e1000_tx_ring
)),
3912 readl(hw
->hw_addr
+ tx_ring
->tdh
),
3913 readl(hw
->hw_addr
+ tx_ring
->tdt
),
3914 tx_ring
->next_to_use
,
3915 tx_ring
->next_to_clean
,
3916 tx_ring
->buffer_info
[eop
].time_stamp
,
3919 eop_desc
->upper
.fields
.status
);
3920 netif_stop_queue(netdev
);
3923 adapter
->total_tx_bytes
+= total_tx_bytes
;
3924 adapter
->total_tx_packets
+= total_tx_packets
;
3925 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
3926 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
3931 * e1000_rx_checksum - Receive Checksum Offload for 82543
3932 * @adapter: board private structure
3933 * @status_err: receive descriptor status and error fields
3934 * @csum: receive descriptor csum field
3935 * @sk_buff: socket buffer with received data
3938 static void e1000_rx_checksum(struct e1000_adapter
*adapter
, u32 status_err
,
3939 u32 csum
, struct sk_buff
*skb
)
3941 struct e1000_hw
*hw
= &adapter
->hw
;
3942 u16 status
= (u16
)status_err
;
3943 u8 errors
= (u8
)(status_err
>> 24);
3944 skb
->ip_summed
= CHECKSUM_NONE
;
3946 /* 82543 or newer only */
3947 if (unlikely(hw
->mac_type
< e1000_82543
)) return;
3948 /* Ignore Checksum bit is set */
3949 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3950 /* TCP/UDP checksum error bit is set */
3951 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3952 /* let the stack verify checksum errors */
3953 adapter
->hw_csum_err
++;
3956 /* TCP/UDP Checksum has not been calculated */
3957 if (hw
->mac_type
<= e1000_82547_rev_2
) {
3958 if (!(status
& E1000_RXD_STAT_TCPCS
))
3961 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3964 /* It must be a TCP or UDP packet with a valid checksum */
3965 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3966 /* TCP checksum is good */
3967 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3968 } else if (hw
->mac_type
> e1000_82547_rev_2
) {
3969 /* IP fragment with UDP payload */
3970 /* Hardware complements the payload checksum, so we undo it
3971 * and then put the value in host order for further stack use.
3973 __sum16 sum
= (__force __sum16
)htons(csum
);
3974 skb
->csum
= csum_unfold(~sum
);
3975 skb
->ip_summed
= CHECKSUM_COMPLETE
;
3977 adapter
->hw_csum_good
++;
3981 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3982 * @adapter: board private structure
3984 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3985 struct e1000_rx_ring
*rx_ring
,
3986 int *work_done
, int work_to_do
)
3988 struct e1000_hw
*hw
= &adapter
->hw
;
3989 struct net_device
*netdev
= adapter
->netdev
;
3990 struct pci_dev
*pdev
= adapter
->pdev
;
3991 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3992 struct e1000_buffer
*buffer_info
, *next_buffer
;
3993 unsigned long flags
;
3997 int cleaned_count
= 0;
3998 bool cleaned
= false;
3999 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4001 i
= rx_ring
->next_to_clean
;
4002 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4003 buffer_info
= &rx_ring
->buffer_info
[i
];
4005 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4006 struct sk_buff
*skb
;
4009 if (*work_done
>= work_to_do
)
4013 status
= rx_desc
->status
;
4014 skb
= buffer_info
->skb
;
4015 buffer_info
->skb
= NULL
;
4017 prefetch(skb
->data
- NET_IP_ALIGN
);
4019 if (++i
== rx_ring
->count
) i
= 0;
4020 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4023 next_buffer
= &rx_ring
->buffer_info
[i
];
4027 pci_unmap_single(pdev
,
4029 buffer_info
->length
,
4030 PCI_DMA_FROMDEVICE
);
4032 length
= le16_to_cpu(rx_desc
->length
);
4034 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4035 /* All receives must fit into a single buffer */
4036 E1000_DBG("%s: Receive packet consumed multiple"
4037 " buffers\n", netdev
->name
);
4039 buffer_info
->skb
= skb
;
4043 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4044 last_byte
= *(skb
->data
+ length
- 1);
4045 if (TBI_ACCEPT(hw
, status
, rx_desc
->errors
, length
,
4047 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4048 e1000_tbi_adjust_stats(hw
, &adapter
->stats
,
4050 spin_unlock_irqrestore(&adapter
->stats_lock
,
4055 buffer_info
->skb
= skb
;
4060 /* adjust length to remove Ethernet CRC, this must be
4061 * done after the TBI_ACCEPT workaround above */
4064 /* probably a little skewed due to removing CRC */
4065 total_rx_bytes
+= length
;
4068 /* code added for copybreak, this should improve
4069 * performance for small packets with large amounts
4070 * of reassembly being done in the stack */
4071 if (length
< copybreak
) {
4072 struct sk_buff
*new_skb
=
4073 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4075 skb_reserve(new_skb
, NET_IP_ALIGN
);
4076 skb_copy_to_linear_data_offset(new_skb
,
4082 /* save the skb in buffer_info as good */
4083 buffer_info
->skb
= skb
;
4086 /* else just continue with the old one */
4088 /* end copybreak code */
4089 skb_put(skb
, length
);
4091 /* Receive Checksum Offload */
4092 e1000_rx_checksum(adapter
,
4094 ((u32
)(rx_desc
->errors
) << 24),
4095 le16_to_cpu(rx_desc
->csum
), skb
);
4097 skb
->protocol
= eth_type_trans(skb
, netdev
);
4099 if (unlikely(adapter
->vlgrp
&&
4100 (status
& E1000_RXD_STAT_VP
))) {
4101 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4102 le16_to_cpu(rx_desc
->special
));
4104 netif_receive_skb(skb
);
4107 netdev
->last_rx
= jiffies
;
4110 rx_desc
->status
= 0;
4112 /* return some buffers to hardware, one at a time is too slow */
4113 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4114 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4118 /* use prefetched values */
4120 buffer_info
= next_buffer
;
4122 rx_ring
->next_to_clean
= i
;
4124 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4126 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4128 adapter
->total_rx_packets
+= total_rx_packets
;
4129 adapter
->total_rx_bytes
+= total_rx_bytes
;
4130 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4131 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4136 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4137 * @adapter: address of board private structure
4140 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4141 struct e1000_rx_ring
*rx_ring
,
4144 struct e1000_hw
*hw
= &adapter
->hw
;
4145 struct net_device
*netdev
= adapter
->netdev
;
4146 struct pci_dev
*pdev
= adapter
->pdev
;
4147 struct e1000_rx_desc
*rx_desc
;
4148 struct e1000_buffer
*buffer_info
;
4149 struct sk_buff
*skb
;
4151 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4153 i
= rx_ring
->next_to_use
;
4154 buffer_info
= &rx_ring
->buffer_info
[i
];
4156 while (cleaned_count
--) {
4157 skb
= buffer_info
->skb
;
4163 skb
= netdev_alloc_skb(netdev
, bufsz
);
4164 if (unlikely(!skb
)) {
4165 /* Better luck next round */
4166 adapter
->alloc_rx_buff_failed
++;
4170 /* Fix for errata 23, can't cross 64kB boundary */
4171 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4172 struct sk_buff
*oldskb
= skb
;
4173 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4174 "at %p\n", bufsz
, skb
->data
);
4175 /* Try again, without freeing the previous */
4176 skb
= netdev_alloc_skb(netdev
, bufsz
);
4177 /* Failed allocation, critical failure */
4179 dev_kfree_skb(oldskb
);
4183 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4186 dev_kfree_skb(oldskb
);
4187 break; /* while !buffer_info->skb */
4190 /* Use new allocation */
4191 dev_kfree_skb(oldskb
);
4193 /* Make buffer alignment 2 beyond a 16 byte boundary
4194 * this will result in a 16 byte aligned IP header after
4195 * the 14 byte MAC header is removed
4197 skb_reserve(skb
, NET_IP_ALIGN
);
4199 buffer_info
->skb
= skb
;
4200 buffer_info
->length
= adapter
->rx_buffer_len
;
4202 buffer_info
->dma
= pci_map_single(pdev
,
4204 adapter
->rx_buffer_len
,
4205 PCI_DMA_FROMDEVICE
);
4207 /* Fix for errata 23, can't cross 64kB boundary */
4208 if (!e1000_check_64k_bound(adapter
,
4209 (void *)(unsigned long)buffer_info
->dma
,
4210 adapter
->rx_buffer_len
)) {
4211 DPRINTK(RX_ERR
, ERR
,
4212 "dma align check failed: %u bytes at %p\n",
4213 adapter
->rx_buffer_len
,
4214 (void *)(unsigned long)buffer_info
->dma
);
4216 buffer_info
->skb
= NULL
;
4218 pci_unmap_single(pdev
, buffer_info
->dma
,
4219 adapter
->rx_buffer_len
,
4220 PCI_DMA_FROMDEVICE
);
4222 break; /* while !buffer_info->skb */
4224 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4225 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4227 if (unlikely(++i
== rx_ring
->count
))
4229 buffer_info
= &rx_ring
->buffer_info
[i
];
4232 if (likely(rx_ring
->next_to_use
!= i
)) {
4233 rx_ring
->next_to_use
= i
;
4234 if (unlikely(i
-- == 0))
4235 i
= (rx_ring
->count
- 1);
4237 /* Force memory writes to complete before letting h/w
4238 * know there are new descriptors to fetch. (Only
4239 * applicable for weak-ordered memory model archs,
4240 * such as IA-64). */
4242 writel(i
, hw
->hw_addr
+ rx_ring
->rdt
);
4247 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4251 static void e1000_smartspeed(struct e1000_adapter
*adapter
)
4253 struct e1000_hw
*hw
= &adapter
->hw
;
4257 if ((hw
->phy_type
!= e1000_phy_igp
) || !hw
->autoneg
||
4258 !(hw
->autoneg_advertised
& ADVERTISE_1000_FULL
))
4261 if (adapter
->smartspeed
== 0) {
4262 /* If Master/Slave config fault is asserted twice,
4263 * we assume back-to-back */
4264 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4265 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4266 e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_status
);
4267 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4268 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4269 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4270 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4271 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
,
4273 adapter
->smartspeed
++;
4274 if (!e1000_phy_setup_autoneg(hw
) &&
4275 !e1000_read_phy_reg(hw
, PHY_CTRL
,
4277 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4278 MII_CR_RESTART_AUTO_NEG
);
4279 e1000_write_phy_reg(hw
, PHY_CTRL
,
4284 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4285 /* If still no link, perhaps using 2/3 pair cable */
4286 e1000_read_phy_reg(hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4287 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4288 e1000_write_phy_reg(hw
, PHY_1000T_CTRL
, phy_ctrl
);
4289 if (!e1000_phy_setup_autoneg(hw
) &&
4290 !e1000_read_phy_reg(hw
, PHY_CTRL
, &phy_ctrl
)) {
4291 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4292 MII_CR_RESTART_AUTO_NEG
);
4293 e1000_write_phy_reg(hw
, PHY_CTRL
, phy_ctrl
);
4296 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4297 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4298 adapter
->smartspeed
= 0;
4308 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4314 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4327 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
4330 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4331 struct e1000_hw
*hw
= &adapter
->hw
;
4332 struct mii_ioctl_data
*data
= if_mii(ifr
);
4336 unsigned long flags
;
4338 if (hw
->media_type
!= e1000_media_type_copper
)
4343 data
->phy_id
= hw
->phy_addr
;
4346 if (!capable(CAP_NET_ADMIN
))
4348 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4349 if (e1000_read_phy_reg(hw
, data
->reg_num
& 0x1F,
4351 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4354 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4357 if (!capable(CAP_NET_ADMIN
))
4359 if (data
->reg_num
& ~(0x1F))
4361 mii_reg
= data
->val_in
;
4362 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4363 if (e1000_write_phy_reg(hw
, data
->reg_num
,
4365 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4368 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4369 if (hw
->media_type
== e1000_media_type_copper
) {
4370 switch (data
->reg_num
) {
4372 if (mii_reg
& MII_CR_POWER_DOWN
)
4374 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4376 hw
->autoneg_advertised
= 0x2F;
4379 spddplx
= SPEED_1000
;
4380 else if (mii_reg
& 0x2000)
4381 spddplx
= SPEED_100
;
4384 spddplx
+= (mii_reg
& 0x100)
4387 retval
= e1000_set_spd_dplx(adapter
,
4392 if (netif_running(adapter
->netdev
))
4393 e1000_reinit_locked(adapter
);
4395 e1000_reset(adapter
);
4397 case M88E1000_PHY_SPEC_CTRL
:
4398 case M88E1000_EXT_PHY_SPEC_CTRL
:
4399 if (e1000_phy_reset(hw
))
4404 switch (data
->reg_num
) {
4406 if (mii_reg
& MII_CR_POWER_DOWN
)
4408 if (netif_running(adapter
->netdev
))
4409 e1000_reinit_locked(adapter
);
4411 e1000_reset(adapter
);
4419 return E1000_SUCCESS
;
4422 void e1000_pci_set_mwi(struct e1000_hw
*hw
)
4424 struct e1000_adapter
*adapter
= hw
->back
;
4425 int ret_val
= pci_set_mwi(adapter
->pdev
);
4428 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4431 void e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4433 struct e1000_adapter
*adapter
= hw
->back
;
4435 pci_clear_mwi(adapter
->pdev
);
4438 int e1000_pcix_get_mmrbc(struct e1000_hw
*hw
)
4440 struct e1000_adapter
*adapter
= hw
->back
;
4441 return pcix_get_mmrbc(adapter
->pdev
);
4444 void e1000_pcix_set_mmrbc(struct e1000_hw
*hw
, int mmrbc
)
4446 struct e1000_adapter
*adapter
= hw
->back
;
4447 pcix_set_mmrbc(adapter
->pdev
, mmrbc
);
4450 s32
e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, u32 reg
, u16
*value
)
4452 struct e1000_adapter
*adapter
= hw
->back
;
4455 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4457 return -E1000_ERR_CONFIG
;
4459 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4461 return E1000_SUCCESS
;
4464 void e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, u32 value
)
4469 static void e1000_vlan_rx_register(struct net_device
*netdev
,
4470 struct vlan_group
*grp
)
4472 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4473 struct e1000_hw
*hw
= &adapter
->hw
;
4476 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4477 e1000_irq_disable(adapter
);
4478 adapter
->vlgrp
= grp
;
4481 /* enable VLAN tag insert/strip */
4483 ctrl
|= E1000_CTRL_VME
;
4486 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4487 /* enable VLAN receive filtering */
4489 rctl
&= ~E1000_RCTL_CFIEN
;
4491 e1000_update_mng_vlan(adapter
);
4494 /* disable VLAN tag insert/strip */
4496 ctrl
&= ~E1000_CTRL_VME
;
4499 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4500 if (adapter
->mng_vlan_id
!=
4501 (u16
)E1000_MNG_VLAN_NONE
) {
4502 e1000_vlan_rx_kill_vid(netdev
,
4503 adapter
->mng_vlan_id
);
4504 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4509 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4510 e1000_irq_enable(adapter
);
4513 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4515 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4516 struct e1000_hw
*hw
= &adapter
->hw
;
4519 if ((hw
->mng_cookie
.status
&
4520 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4521 (vid
== adapter
->mng_vlan_id
))
4523 /* add VID to filter table */
4524 index
= (vid
>> 5) & 0x7F;
4525 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4526 vfta
|= (1 << (vid
& 0x1F));
4527 e1000_write_vfta(hw
, index
, vfta
);
4530 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
4532 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4533 struct e1000_hw
*hw
= &adapter
->hw
;
4536 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4537 e1000_irq_disable(adapter
);
4538 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
4539 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4540 e1000_irq_enable(adapter
);
4542 if ((hw
->mng_cookie
.status
&
4543 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4544 (vid
== adapter
->mng_vlan_id
)) {
4545 /* release control to f/w */
4546 e1000_release_hw_control(adapter
);
4550 /* remove VID from filter table */
4551 index
= (vid
>> 5) & 0x7F;
4552 vfta
= E1000_READ_REG_ARRAY(hw
, VFTA
, index
);
4553 vfta
&= ~(1 << (vid
& 0x1F));
4554 e1000_write_vfta(hw
, index
, vfta
);
4557 static void e1000_restore_vlan(struct e1000_adapter
*adapter
)
4559 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4561 if (adapter
->vlgrp
) {
4563 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4564 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
4566 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4571 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
)
4573 struct e1000_hw
*hw
= &adapter
->hw
;
4577 /* Fiber NICs only allow 1000 gbps Full duplex */
4578 if ((hw
->media_type
== e1000_media_type_fiber
) &&
4579 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4580 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4585 case SPEED_10
+ DUPLEX_HALF
:
4586 hw
->forced_speed_duplex
= e1000_10_half
;
4588 case SPEED_10
+ DUPLEX_FULL
:
4589 hw
->forced_speed_duplex
= e1000_10_full
;
4591 case SPEED_100
+ DUPLEX_HALF
:
4592 hw
->forced_speed_duplex
= e1000_100_half
;
4594 case SPEED_100
+ DUPLEX_FULL
:
4595 hw
->forced_speed_duplex
= e1000_100_full
;
4597 case SPEED_1000
+ DUPLEX_FULL
:
4599 hw
->autoneg_advertised
= ADVERTISE_1000_FULL
;
4601 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4603 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4609 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4611 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4612 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4613 struct e1000_hw
*hw
= &adapter
->hw
;
4614 u32 ctrl
, ctrl_ext
, rctl
, status
;
4615 u32 wufc
= adapter
->wol
;
4620 netif_device_detach(netdev
);
4622 if (netif_running(netdev
)) {
4623 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4624 e1000_down(adapter
);
4628 retval
= pci_save_state(pdev
);
4633 status
= er32(STATUS
);
4634 if (status
& E1000_STATUS_LU
)
4635 wufc
&= ~E1000_WUFC_LNKC
;
4638 e1000_setup_rctl(adapter
);
4639 e1000_set_rx_mode(netdev
);
4641 /* turn on all-multi mode if wake on multicast is enabled */
4642 if (wufc
& E1000_WUFC_MC
) {
4644 rctl
|= E1000_RCTL_MPE
;
4648 if (hw
->mac_type
>= e1000_82540
) {
4650 /* advertise wake from D3Cold */
4651 #define E1000_CTRL_ADVD3WUC 0x00100000
4652 /* phy power management enable */
4653 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4654 ctrl
|= E1000_CTRL_ADVD3WUC
|
4655 E1000_CTRL_EN_PHY_PWR_MGMT
;
4659 if (hw
->media_type
== e1000_media_type_fiber
||
4660 hw
->media_type
== e1000_media_type_internal_serdes
) {
4661 /* keep the laser running in D3 */
4662 ctrl_ext
= er32(CTRL_EXT
);
4663 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4664 ew32(CTRL_EXT
, ctrl_ext
);
4667 /* Allow time for pending master requests to run */
4668 e1000_disable_pciex_master(hw
);
4670 ew32(WUC
, E1000_WUC_PME_EN
);
4672 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4673 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4677 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4678 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4681 e1000_release_manageability(adapter
);
4683 /* make sure adapter isn't asleep if manageability is enabled */
4684 if (adapter
->en_mng_pt
) {
4685 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4686 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4689 if (hw
->phy_type
== e1000_phy_igp_3
)
4690 e1000_phy_powerdown_workaround(hw
);
4692 if (netif_running(netdev
))
4693 e1000_free_irq(adapter
);
4695 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4696 * would have already happened in close and is redundant. */
4697 e1000_release_hw_control(adapter
);
4699 pci_disable_device(pdev
);
4701 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4707 static int e1000_resume(struct pci_dev
*pdev
)
4709 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4710 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4711 struct e1000_hw
*hw
= &adapter
->hw
;
4714 pci_set_power_state(pdev
, PCI_D0
);
4715 pci_restore_state(pdev
);
4717 if (adapter
->need_ioport
)
4718 err
= pci_enable_device(pdev
);
4720 err
= pci_enable_device_mem(pdev
);
4722 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4725 pci_set_master(pdev
);
4727 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4728 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4730 if (netif_running(netdev
)) {
4731 err
= e1000_request_irq(adapter
);
4736 e1000_power_up_phy(adapter
);
4737 e1000_reset(adapter
);
4740 e1000_init_manageability(adapter
);
4742 if (netif_running(netdev
))
4745 netif_device_attach(netdev
);
4747 /* If the controller is 82573 and f/w is AMT, do not set
4748 * DRV_LOAD until the interface is up. For all other cases,
4749 * let the f/w know that the h/w is now under the control
4751 if (hw
->mac_type
!= e1000_82573
||
4752 !e1000_check_mng_mode(hw
))
4753 e1000_get_hw_control(adapter
);
4759 static void e1000_shutdown(struct pci_dev
*pdev
)
4761 e1000_suspend(pdev
, PMSG_SUSPEND
);
4764 #ifdef CONFIG_NET_POLL_CONTROLLER
4766 * Polling 'interrupt' - used by things like netconsole to send skbs
4767 * without having to re-enable interrupts. It's not called while
4768 * the interrupt routine is executing.
4770 static void e1000_netpoll(struct net_device
*netdev
)
4772 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4774 disable_irq(adapter
->pdev
->irq
);
4775 e1000_intr(adapter
->pdev
->irq
, netdev
);
4776 enable_irq(adapter
->pdev
->irq
);
4781 * e1000_io_error_detected - called when PCI error is detected
4782 * @pdev: Pointer to PCI device
4783 * @state: The current pci conneection state
4785 * This function is called after a PCI bus error affecting
4786 * this device has been detected.
4788 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
4789 pci_channel_state_t state
)
4791 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4792 struct e1000_adapter
*adapter
= netdev
->priv
;
4794 netif_device_detach(netdev
);
4796 if (netif_running(netdev
))
4797 e1000_down(adapter
);
4798 pci_disable_device(pdev
);
4800 /* Request a slot slot reset. */
4801 return PCI_ERS_RESULT_NEED_RESET
;
4805 * e1000_io_slot_reset - called after the pci bus has been reset.
4806 * @pdev: Pointer to PCI device
4808 * Restart the card from scratch, as if from a cold-boot. Implementation
4809 * resembles the first-half of the e1000_resume routine.
4811 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4813 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4814 struct e1000_adapter
*adapter
= netdev
->priv
;
4815 struct e1000_hw
*hw
= &adapter
->hw
;
4818 if (adapter
->need_ioport
)
4819 err
= pci_enable_device(pdev
);
4821 err
= pci_enable_device_mem(pdev
);
4823 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4824 return PCI_ERS_RESULT_DISCONNECT
;
4826 pci_set_master(pdev
);
4828 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4829 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4831 e1000_reset(adapter
);
4834 return PCI_ERS_RESULT_RECOVERED
;
4838 * e1000_io_resume - called when traffic can start flowing again.
4839 * @pdev: Pointer to PCI device
4841 * This callback is called when the error recovery driver tells us that
4842 * its OK to resume normal operation. Implementation resembles the
4843 * second-half of the e1000_resume routine.
4845 static void e1000_io_resume(struct pci_dev
*pdev
)
4847 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4848 struct e1000_adapter
*adapter
= netdev
->priv
;
4849 struct e1000_hw
*hw
= &adapter
->hw
;
4851 e1000_init_manageability(adapter
);
4853 if (netif_running(netdev
)) {
4854 if (e1000_up(adapter
)) {
4855 printk("e1000: can't bring device back up after reset\n");
4860 netif_device_attach(netdev
);
4862 /* If the controller is 82573 and f/w is AMT, do not set
4863 * DRV_LOAD until the interface is up. For all other cases,
4864 * let the f/w know that the h/w is now under the control
4866 if (hw
->mac_type
!= e1000_82573
||
4867 !e1000_check_mng_mode(hw
))
4868 e1000_get_hw_control(adapter
);