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 #ifndef CONFIG_E1000_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "7.3.20-k2"DRIVERNAPI
40 const char e1000_driver_version
[] = DRV_VERSION
;
41 static const char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* e1000_pci_tbl - PCI Device ID Table
45 * Last entry must be all 0s
48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
50 static struct pci_device_id e1000_pci_tbl
[] = {
51 INTEL_E1000_ETHERNET_DEVICE(0x1000),
52 INTEL_E1000_ETHERNET_DEVICE(0x1001),
53 INTEL_E1000_ETHERNET_DEVICE(0x1004),
54 INTEL_E1000_ETHERNET_DEVICE(0x1008),
55 INTEL_E1000_ETHERNET_DEVICE(0x1009),
56 INTEL_E1000_ETHERNET_DEVICE(0x100C),
57 INTEL_E1000_ETHERNET_DEVICE(0x100D),
58 INTEL_E1000_ETHERNET_DEVICE(0x100E),
59 INTEL_E1000_ETHERNET_DEVICE(0x100F),
60 INTEL_E1000_ETHERNET_DEVICE(0x1010),
61 INTEL_E1000_ETHERNET_DEVICE(0x1011),
62 INTEL_E1000_ETHERNET_DEVICE(0x1012),
63 INTEL_E1000_ETHERNET_DEVICE(0x1013),
64 INTEL_E1000_ETHERNET_DEVICE(0x1014),
65 INTEL_E1000_ETHERNET_DEVICE(0x1015),
66 INTEL_E1000_ETHERNET_DEVICE(0x1016),
67 INTEL_E1000_ETHERNET_DEVICE(0x1017),
68 INTEL_E1000_ETHERNET_DEVICE(0x1018),
69 INTEL_E1000_ETHERNET_DEVICE(0x1019),
70 INTEL_E1000_ETHERNET_DEVICE(0x101A),
71 INTEL_E1000_ETHERNET_DEVICE(0x101D),
72 INTEL_E1000_ETHERNET_DEVICE(0x101E),
73 INTEL_E1000_ETHERNET_DEVICE(0x1026),
74 INTEL_E1000_ETHERNET_DEVICE(0x1027),
75 INTEL_E1000_ETHERNET_DEVICE(0x1028),
76 INTEL_E1000_ETHERNET_DEVICE(0x1075),
77 INTEL_E1000_ETHERNET_DEVICE(0x1076),
78 INTEL_E1000_ETHERNET_DEVICE(0x1077),
79 INTEL_E1000_ETHERNET_DEVICE(0x1078),
80 INTEL_E1000_ETHERNET_DEVICE(0x1079),
81 INTEL_E1000_ETHERNET_DEVICE(0x107A),
82 INTEL_E1000_ETHERNET_DEVICE(0x107B),
83 INTEL_E1000_ETHERNET_DEVICE(0x107C),
84 INTEL_E1000_ETHERNET_DEVICE(0x108A),
85 INTEL_E1000_ETHERNET_DEVICE(0x1099),
86 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
87 /* required last entry */
91 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
93 int e1000_up(struct e1000_adapter
*adapter
);
94 void e1000_down(struct e1000_adapter
*adapter
);
95 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
96 void e1000_reset(struct e1000_adapter
*adapter
);
97 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
);
98 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
99 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
100 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
101 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
102 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
103 struct e1000_tx_ring
*txdr
);
104 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
105 struct e1000_rx_ring
*rxdr
);
106 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
107 struct e1000_tx_ring
*tx_ring
);
108 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
109 struct e1000_rx_ring
*rx_ring
);
110 void e1000_update_stats(struct e1000_adapter
*adapter
);
112 static int e1000_init_module(void);
113 static void e1000_exit_module(void);
114 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
115 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
116 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
117 static int e1000_sw_init(struct e1000_adapter
*adapter
);
118 static int e1000_open(struct net_device
*netdev
);
119 static int e1000_close(struct net_device
*netdev
);
120 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
121 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
122 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
123 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
124 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
125 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
126 struct e1000_tx_ring
*tx_ring
);
127 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
128 struct e1000_rx_ring
*rx_ring
);
129 static void e1000_set_rx_mode(struct net_device
*netdev
);
130 static void e1000_update_phy_info(unsigned long data
);
131 static void e1000_watchdog(unsigned long data
);
132 static void e1000_82547_tx_fifo_stall(unsigned long data
);
133 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
134 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
135 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
136 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
137 static irqreturn_t
e1000_intr(int irq
, void *data
);
138 static irqreturn_t
e1000_intr_msi(int irq
, void *data
);
139 static bool e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
140 struct e1000_tx_ring
*tx_ring
);
141 #ifdef CONFIG_E1000_NAPI
142 static int e1000_clean(struct napi_struct
*napi
, int budget
);
143 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
144 struct e1000_rx_ring
*rx_ring
,
145 int *work_done
, int work_to_do
);
146 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
147 struct e1000_rx_ring
*rx_ring
,
148 int *work_done
, int work_to_do
);
150 static bool e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
151 struct e1000_rx_ring
*rx_ring
);
152 static bool e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
153 struct e1000_rx_ring
*rx_ring
);
155 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
156 struct e1000_rx_ring
*rx_ring
,
158 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
159 struct e1000_rx_ring
*rx_ring
,
161 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
162 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
164 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
165 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
166 static void e1000_tx_timeout(struct net_device
*dev
);
167 static void e1000_reset_task(struct work_struct
*work
);
168 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
169 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
170 struct sk_buff
*skb
);
172 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
173 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
);
174 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
);
175 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
177 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
179 static int e1000_resume(struct pci_dev
*pdev
);
181 static void e1000_shutdown(struct pci_dev
*pdev
);
183 #ifdef CONFIG_NET_POLL_CONTROLLER
184 /* for netdump / net console */
185 static void e1000_netpoll (struct net_device
*netdev
);
188 #define COPYBREAK_DEFAULT 256
189 static unsigned int copybreak __read_mostly
= COPYBREAK_DEFAULT
;
190 module_param(copybreak
, uint
, 0644);
191 MODULE_PARM_DESC(copybreak
,
192 "Maximum size of packet that is copied to a new buffer on receive");
194 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
195 pci_channel_state_t state
);
196 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
197 static void e1000_io_resume(struct pci_dev
*pdev
);
199 static struct pci_error_handlers e1000_err_handler
= {
200 .error_detected
= e1000_io_error_detected
,
201 .slot_reset
= e1000_io_slot_reset
,
202 .resume
= e1000_io_resume
,
205 static struct pci_driver e1000_driver
= {
206 .name
= e1000_driver_name
,
207 .id_table
= e1000_pci_tbl
,
208 .probe
= e1000_probe
,
209 .remove
= __devexit_p(e1000_remove
),
211 /* Power Managment Hooks */
212 .suspend
= e1000_suspend
,
213 .resume
= e1000_resume
,
215 .shutdown
= e1000_shutdown
,
216 .err_handler
= &e1000_err_handler
219 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
220 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
221 MODULE_LICENSE("GPL");
222 MODULE_VERSION(DRV_VERSION
);
224 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
225 module_param(debug
, int, 0);
226 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
229 * e1000_init_module - Driver Registration Routine
231 * e1000_init_module is the first routine called when the driver is
232 * loaded. All it does is register with the PCI subsystem.
236 e1000_init_module(void)
239 printk(KERN_INFO
"%s - version %s\n",
240 e1000_driver_string
, e1000_driver_version
);
242 printk(KERN_INFO
"%s\n", e1000_copyright
);
244 ret
= pci_register_driver(&e1000_driver
);
245 if (copybreak
!= COPYBREAK_DEFAULT
) {
247 printk(KERN_INFO
"e1000: copybreak disabled\n");
249 printk(KERN_INFO
"e1000: copybreak enabled for "
250 "packets <= %u bytes\n", copybreak
);
255 module_init(e1000_init_module
);
258 * e1000_exit_module - Driver Exit Cleanup Routine
260 * e1000_exit_module is called just before the driver is removed
265 e1000_exit_module(void)
267 pci_unregister_driver(&e1000_driver
);
270 module_exit(e1000_exit_module
);
272 static int e1000_request_irq(struct e1000_adapter
*adapter
)
274 struct net_device
*netdev
= adapter
->netdev
;
275 irq_handler_t handler
= e1000_intr
;
276 int irq_flags
= IRQF_SHARED
;
279 if (adapter
->hw
.mac_type
>= e1000_82571
) {
280 adapter
->have_msi
= !pci_enable_msi(adapter
->pdev
);
281 if (adapter
->have_msi
) {
282 handler
= e1000_intr_msi
;
287 err
= request_irq(adapter
->pdev
->irq
, handler
, irq_flags
, netdev
->name
,
290 if (adapter
->have_msi
)
291 pci_disable_msi(adapter
->pdev
);
293 "Unable to allocate interrupt Error: %d\n", err
);
299 static void e1000_free_irq(struct e1000_adapter
*adapter
)
301 struct net_device
*netdev
= adapter
->netdev
;
303 free_irq(adapter
->pdev
->irq
, netdev
);
305 if (adapter
->have_msi
)
306 pci_disable_msi(adapter
->pdev
);
310 * e1000_irq_disable - Mask off interrupt generation on the NIC
311 * @adapter: board private structure
315 e1000_irq_disable(struct e1000_adapter
*adapter
)
317 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
318 E1000_WRITE_FLUSH(&adapter
->hw
);
319 synchronize_irq(adapter
->pdev
->irq
);
323 * e1000_irq_enable - Enable default interrupt generation settings
324 * @adapter: board private structure
328 e1000_irq_enable(struct e1000_adapter
*adapter
)
330 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
331 E1000_WRITE_FLUSH(&adapter
->hw
);
335 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
337 struct net_device
*netdev
= adapter
->netdev
;
338 u16 vid
= adapter
->hw
.mng_cookie
.vlan_id
;
339 u16 old_vid
= adapter
->mng_vlan_id
;
340 if (adapter
->vlgrp
) {
341 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
342 if (adapter
->hw
.mng_cookie
.status
&
343 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
344 e1000_vlan_rx_add_vid(netdev
, vid
);
345 adapter
->mng_vlan_id
= vid
;
347 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
349 if ((old_vid
!= (u16
)E1000_MNG_VLAN_NONE
) &&
351 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
352 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
354 adapter
->mng_vlan_id
= vid
;
359 * e1000_release_hw_control - release control of the h/w to f/w
360 * @adapter: address of board private structure
362 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
363 * For ASF and Pass Through versions of f/w this means that the
364 * driver is no longer loaded. For AMT version (only with 82573) i
365 * of the f/w this means that the network i/f is closed.
370 e1000_release_hw_control(struct e1000_adapter
*adapter
)
375 /* Let firmware taken over control of h/w */
376 switch (adapter
->hw
.mac_type
) {
378 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
379 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
380 swsm
& ~E1000_SWSM_DRV_LOAD
);
384 case e1000_80003es2lan
:
386 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
387 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
388 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
396 * e1000_get_hw_control - get control of the h/w from f/w
397 * @adapter: address of board private structure
399 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
400 * For ASF and Pass Through versions of f/w this means that
401 * the driver is loaded. For AMT version (only with 82573)
402 * of the f/w this means that the network i/f is open.
407 e1000_get_hw_control(struct e1000_adapter
*adapter
)
412 /* Let firmware know the driver has taken over */
413 switch (adapter
->hw
.mac_type
) {
415 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
416 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
417 swsm
| E1000_SWSM_DRV_LOAD
);
421 case e1000_80003es2lan
:
423 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
424 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
425 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
433 e1000_init_manageability(struct e1000_adapter
*adapter
)
435 if (adapter
->en_mng_pt
) {
436 u32 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
438 /* disable hardware interception of ARP */
439 manc
&= ~(E1000_MANC_ARP_EN
);
441 /* enable receiving management packets to the host */
442 /* this will probably generate destination unreachable messages
443 * from the host OS, but the packets will be handled on SMBUS */
444 if (adapter
->hw
.has_manc2h
) {
445 u32 manc2h
= E1000_READ_REG(&adapter
->hw
, MANC2H
);
447 manc
|= E1000_MANC_EN_MNG2HOST
;
448 #define E1000_MNG2HOST_PORT_623 (1 << 5)
449 #define E1000_MNG2HOST_PORT_664 (1 << 6)
450 manc2h
|= E1000_MNG2HOST_PORT_623
;
451 manc2h
|= E1000_MNG2HOST_PORT_664
;
452 E1000_WRITE_REG(&adapter
->hw
, MANC2H
, manc2h
);
455 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
460 e1000_release_manageability(struct e1000_adapter
*adapter
)
462 if (adapter
->en_mng_pt
) {
463 u32 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
465 /* re-enable hardware interception of ARP */
466 manc
|= E1000_MANC_ARP_EN
;
468 if (adapter
->hw
.has_manc2h
)
469 manc
&= ~E1000_MANC_EN_MNG2HOST
;
471 /* don't explicitly have to mess with MANC2H since
472 * MANC has an enable disable that gates MANC2H */
474 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
479 * e1000_configure - configure the hardware for RX and TX
480 * @adapter = private board structure
482 static void e1000_configure(struct e1000_adapter
*adapter
)
484 struct net_device
*netdev
= adapter
->netdev
;
487 e1000_set_rx_mode(netdev
);
489 e1000_restore_vlan(adapter
);
490 e1000_init_manageability(adapter
);
492 e1000_configure_tx(adapter
);
493 e1000_setup_rctl(adapter
);
494 e1000_configure_rx(adapter
);
495 /* call E1000_DESC_UNUSED which always leaves
496 * at least 1 descriptor unused to make sure
497 * next_to_use != next_to_clean */
498 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
499 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
500 adapter
->alloc_rx_buf(adapter
, ring
,
501 E1000_DESC_UNUSED(ring
));
504 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
507 int e1000_up(struct e1000_adapter
*adapter
)
509 /* hardware has been reset, we need to reload some things */
510 e1000_configure(adapter
);
512 clear_bit(__E1000_DOWN
, &adapter
->flags
);
514 #ifdef CONFIG_E1000_NAPI
515 napi_enable(&adapter
->napi
);
517 e1000_irq_enable(adapter
);
519 /* fire a link change interrupt to start the watchdog */
520 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_LSC
);
525 * e1000_power_up_phy - restore link in case the phy was powered down
526 * @adapter: address of board private structure
528 * The phy may be powered down to save power and turn off link when the
529 * driver is unloaded and wake on lan is not enabled (among others)
530 * *** this routine MUST be followed by a call to e1000_reset ***
534 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
538 /* Just clear the power down bit to wake the phy back up */
539 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
540 /* according to the manual, the phy will retain its
541 * settings across a power-down/up cycle */
542 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
543 mii_reg
&= ~MII_CR_POWER_DOWN
;
544 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
548 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
550 /* Power down the PHY so no link is implied when interface is down *
551 * The PHY cannot be powered down if any of the following is true *
554 * (c) SoL/IDER session is active */
555 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
556 adapter
->hw
.media_type
== e1000_media_type_copper
) {
559 switch (adapter
->hw
.mac_type
) {
562 case e1000_82545_rev_3
:
564 case e1000_82546_rev_3
:
566 case e1000_82541_rev_2
:
568 case e1000_82547_rev_2
:
569 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
576 case e1000_80003es2lan
:
578 if (e1000_check_mng_mode(&adapter
->hw
) ||
579 e1000_check_phy_reset_block(&adapter
->hw
))
585 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
586 mii_reg
|= MII_CR_POWER_DOWN
;
587 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
595 e1000_down(struct e1000_adapter
*adapter
)
597 struct net_device
*netdev
= adapter
->netdev
;
599 /* signal that we're down so the interrupt handler does not
600 * reschedule our watchdog timer */
601 set_bit(__E1000_DOWN
, &adapter
->flags
);
603 #ifdef CONFIG_E1000_NAPI
604 napi_disable(&adapter
->napi
);
606 e1000_irq_disable(adapter
);
608 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
609 del_timer_sync(&adapter
->watchdog_timer
);
610 del_timer_sync(&adapter
->phy_info_timer
);
612 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
613 adapter
->link_speed
= 0;
614 adapter
->link_duplex
= 0;
615 netif_carrier_off(netdev
);
616 netif_stop_queue(netdev
);
618 e1000_reset(adapter
);
619 e1000_clean_all_tx_rings(adapter
);
620 e1000_clean_all_rx_rings(adapter
);
624 e1000_reinit_locked(struct e1000_adapter
*adapter
)
626 WARN_ON(in_interrupt());
627 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
631 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
635 e1000_reset(struct e1000_adapter
*adapter
)
637 u32 pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
638 u16 fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
639 bool legacy_pba_adjust
= false;
641 /* Repartition Pba for greater than 9k mtu
642 * To take effect CTRL.RST is required.
645 switch (adapter
->hw
.mac_type
) {
646 case e1000_82542_rev2_0
:
647 case e1000_82542_rev2_1
:
652 case e1000_82541_rev_2
:
653 legacy_pba_adjust
= true;
657 case e1000_82545_rev_3
:
659 case e1000_82546_rev_3
:
663 case e1000_82547_rev_2
:
664 legacy_pba_adjust
= true;
669 case e1000_80003es2lan
:
677 case e1000_undefined
:
682 if (legacy_pba_adjust
) {
683 if (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
)
684 pba
-= 8; /* allocate more FIFO for Tx */
686 if (adapter
->hw
.mac_type
== e1000_82547
) {
687 adapter
->tx_fifo_head
= 0;
688 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
689 adapter
->tx_fifo_size
=
690 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
691 atomic_set(&adapter
->tx_fifo_stall
, 0);
693 } else if (adapter
->hw
.max_frame_size
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
694 /* adjust PBA for jumbo frames */
695 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
697 /* To maintain wire speed transmits, the Tx FIFO should be
698 * large enough to accomodate two full transmit packets,
699 * rounded up to the next 1KB and expressed in KB. Likewise,
700 * the Rx FIFO should be large enough to accomodate at least
701 * one full receive packet and is similarly rounded up and
702 * expressed in KB. */
703 pba
= E1000_READ_REG(&adapter
->hw
, PBA
);
704 /* upper 16 bits has Tx packet buffer allocation size in KB */
705 tx_space
= pba
>> 16;
706 /* lower 16 bits has Rx packet buffer allocation size in KB */
708 /* don't include ethernet FCS because hardware appends/strips */
709 min_rx_space
= adapter
->netdev
->mtu
+ ENET_HEADER_SIZE
+
711 min_tx_space
= min_rx_space
;
713 min_tx_space
= ALIGN(min_tx_space
, 1024);
715 min_rx_space
= ALIGN(min_rx_space
, 1024);
718 /* If current Tx allocation is less than the min Tx FIFO size,
719 * and the min Tx FIFO size is less than the current Rx FIFO
720 * allocation, take space away from current Rx allocation */
721 if (tx_space
< min_tx_space
&&
722 ((min_tx_space
- tx_space
) < pba
)) {
723 pba
= pba
- (min_tx_space
- tx_space
);
725 /* PCI/PCIx hardware has PBA alignment constraints */
726 switch (adapter
->hw
.mac_type
) {
727 case e1000_82545
... e1000_82546_rev_3
:
728 pba
&= ~(E1000_PBA_8K
- 1);
734 /* if short on rx space, rx wins and must trump tx
735 * adjustment or use Early Receive if available */
736 if (pba
< min_rx_space
) {
737 switch (adapter
->hw
.mac_type
) {
739 /* ERT enabled in e1000_configure_rx */
749 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
751 /* flow control settings */
752 /* Set the FC high water mark to 90% of the FIFO size.
753 * Required to clear last 3 LSB */
754 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
755 /* We can't use 90% on small FIFOs because the remainder
756 * would be less than 1 full frame. In this case, we size
757 * it to allow at least a full frame above the high water
759 if (pba
< E1000_PBA_16K
)
760 fc_high_water_mark
= (pba
* 1024) - 1600;
762 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
763 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
764 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
765 adapter
->hw
.fc_pause_time
= 0xFFFF;
767 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
768 adapter
->hw
.fc_send_xon
= 1;
769 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
771 /* Allow time for pending master requests to run */
772 e1000_reset_hw(&adapter
->hw
);
773 if (adapter
->hw
.mac_type
>= e1000_82544
)
774 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
776 if (e1000_init_hw(&adapter
->hw
))
777 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
778 e1000_update_mng_vlan(adapter
);
780 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
781 if (adapter
->hw
.mac_type
>= e1000_82544
&&
782 adapter
->hw
.mac_type
<= e1000_82547_rev_2
&&
783 adapter
->hw
.autoneg
== 1 &&
784 adapter
->hw
.autoneg_advertised
== ADVERTISE_1000_FULL
) {
785 u32 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
786 /* clear phy power management bit if we are in gig only mode,
787 * which if enabled will attempt negotiation to 100Mb, which
788 * can cause a loss of link at power off or driver unload */
789 ctrl
&= ~E1000_CTRL_SWDPIN3
;
790 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
793 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
794 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
796 e1000_reset_adaptive(&adapter
->hw
);
797 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
799 if (!adapter
->smart_power_down
&&
800 (adapter
->hw
.mac_type
== e1000_82571
||
801 adapter
->hw
.mac_type
== e1000_82572
)) {
803 /* speed up time to link by disabling smart power down, ignore
804 * the return value of this function because there is nothing
805 * different we would do if it failed */
806 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
808 phy_data
&= ~IGP02E1000_PM_SPD
;
809 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
813 e1000_release_manageability(adapter
);
817 * Dump the eeprom for users having checksum issues
819 static void e1000_dump_eeprom(struct e1000_adapter
*adapter
)
821 struct net_device
*netdev
= adapter
->netdev
;
822 struct ethtool_eeprom eeprom
;
823 const struct ethtool_ops
*ops
= netdev
->ethtool_ops
;
826 u16 csum_old
, csum_new
= 0;
828 eeprom
.len
= ops
->get_eeprom_len(netdev
);
831 data
= kmalloc(eeprom
.len
, GFP_KERNEL
);
833 printk(KERN_ERR
"Unable to allocate memory to dump EEPROM"
838 ops
->get_eeprom(netdev
, &eeprom
, data
);
840 csum_old
= (data
[EEPROM_CHECKSUM_REG
* 2]) +
841 (data
[EEPROM_CHECKSUM_REG
* 2 + 1] << 8);
842 for (i
= 0; i
< EEPROM_CHECKSUM_REG
* 2; i
+= 2)
843 csum_new
+= data
[i
] + (data
[i
+ 1] << 8);
844 csum_new
= EEPROM_SUM
- csum_new
;
846 printk(KERN_ERR
"/*********************/\n");
847 printk(KERN_ERR
"Current EEPROM Checksum : 0x%04x\n", csum_old
);
848 printk(KERN_ERR
"Calculated : 0x%04x\n", csum_new
);
850 printk(KERN_ERR
"Offset Values\n");
851 printk(KERN_ERR
"======== ======\n");
852 print_hex_dump(KERN_ERR
, "", DUMP_PREFIX_OFFSET
, 16, 1, data
, 128, 0);
854 printk(KERN_ERR
"Include this output when contacting your support "
856 printk(KERN_ERR
"This is not a software error! Something bad "
857 "happened to your hardware or\n");
858 printk(KERN_ERR
"EEPROM image. Ignoring this "
859 "problem could result in further problems,\n");
860 printk(KERN_ERR
"possibly loss of data, corruption or system hangs!\n");
861 printk(KERN_ERR
"The MAC Address will be reset to 00:00:00:00:00:00, "
862 "which is invalid\n");
863 printk(KERN_ERR
"and requires you to set the proper MAC "
864 "address manually before continuing\n");
865 printk(KERN_ERR
"to enable this network device.\n");
866 printk(KERN_ERR
"Please inspect the EEPROM dump and report the issue "
867 "to your hardware vendor\n");
868 printk(KERN_ERR
"or Intel Customer Support: linux-nics@intel.com\n");
869 printk(KERN_ERR
"/*********************/\n");
875 * e1000_probe - Device Initialization Routine
876 * @pdev: PCI device information struct
877 * @ent: entry in e1000_pci_tbl
879 * Returns 0 on success, negative on failure
881 * e1000_probe initializes an adapter identified by a pci_dev structure.
882 * The OS initialization, configuring of the adapter private structure,
883 * and a hardware reset occur.
887 e1000_probe(struct pci_dev
*pdev
,
888 const struct pci_device_id
*ent
)
890 struct net_device
*netdev
;
891 struct e1000_adapter
*adapter
;
893 static int cards_found
= 0;
894 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
895 int i
, err
, pci_using_dac
;
897 u16 eeprom_apme_mask
= E1000_EEPROM_APME
;
898 DECLARE_MAC_BUF(mac
);
900 if ((err
= pci_enable_device(pdev
)))
903 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
904 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
907 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
908 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
909 E1000_ERR("No usable DMA configuration, aborting\n");
915 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
918 pci_set_master(pdev
);
921 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
923 goto err_alloc_etherdev
;
925 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
927 pci_set_drvdata(pdev
, netdev
);
928 adapter
= netdev_priv(netdev
);
929 adapter
->netdev
= netdev
;
930 adapter
->pdev
= pdev
;
931 adapter
->hw
.back
= adapter
;
932 adapter
->msg_enable
= (1 << debug
) - 1;
935 adapter
->hw
.hw_addr
= ioremap(pci_resource_start(pdev
, BAR_0
),
936 pci_resource_len(pdev
, BAR_0
));
937 if (!adapter
->hw
.hw_addr
)
940 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
941 if (pci_resource_len(pdev
, i
) == 0)
943 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
944 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
949 netdev
->open
= &e1000_open
;
950 netdev
->stop
= &e1000_close
;
951 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
952 netdev
->get_stats
= &e1000_get_stats
;
953 netdev
->set_rx_mode
= &e1000_set_rx_mode
;
954 netdev
->set_mac_address
= &e1000_set_mac
;
955 netdev
->change_mtu
= &e1000_change_mtu
;
956 netdev
->do_ioctl
= &e1000_ioctl
;
957 e1000_set_ethtool_ops(netdev
);
958 netdev
->tx_timeout
= &e1000_tx_timeout
;
959 netdev
->watchdog_timeo
= 5 * HZ
;
960 #ifdef CONFIG_E1000_NAPI
961 netif_napi_add(netdev
, &adapter
->napi
, e1000_clean
, 64);
963 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
964 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
965 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
966 #ifdef CONFIG_NET_POLL_CONTROLLER
967 netdev
->poll_controller
= e1000_netpoll
;
969 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
971 adapter
->bd_number
= cards_found
;
973 /* setup the private structure */
975 if ((err
= e1000_sw_init(adapter
)))
979 /* Flash BAR mapping must happen after e1000_sw_init
980 * because it depends on mac_type */
981 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
982 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
983 adapter
->hw
.flash_address
=
984 ioremap(pci_resource_start(pdev
, 1),
985 pci_resource_len(pdev
, 1));
986 if (!adapter
->hw
.flash_address
)
990 if (e1000_check_phy_reset_block(&adapter
->hw
))
991 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
993 if (adapter
->hw
.mac_type
>= e1000_82543
) {
994 netdev
->features
= NETIF_F_SG
|
998 NETIF_F_HW_VLAN_FILTER
;
999 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
1000 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
1003 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
1004 (adapter
->hw
.mac_type
!= e1000_82547
))
1005 netdev
->features
|= NETIF_F_TSO
;
1007 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
1008 netdev
->features
|= NETIF_F_TSO6
;
1010 netdev
->features
|= NETIF_F_HIGHDMA
;
1012 netdev
->features
|= NETIF_F_LLTX
;
1014 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
1016 /* initialize eeprom parameters */
1017 if (e1000_init_eeprom_params(&adapter
->hw
)) {
1018 E1000_ERR("EEPROM initialization failed\n");
1022 /* before reading the EEPROM, reset the controller to
1023 * put the device in a known good starting state */
1025 e1000_reset_hw(&adapter
->hw
);
1027 /* make sure the EEPROM is good */
1028 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
1029 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
1030 e1000_dump_eeprom(adapter
);
1032 * set MAC address to all zeroes to invalidate and temporary
1033 * disable this device for the user. This blocks regular
1034 * traffic while still permitting ethtool ioctls from reaching
1035 * the hardware as well as allowing the user to run the
1036 * interface after manually setting a hw addr using
1039 memset(adapter
->hw
.mac_addr
, 0, netdev
->addr_len
);
1041 /* copy the MAC address out of the EEPROM */
1042 if (e1000_read_mac_addr(&adapter
->hw
))
1043 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
1045 /* don't block initalization here due to bad MAC address */
1046 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
1047 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
1049 if (!is_valid_ether_addr(netdev
->perm_addr
))
1050 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
1052 e1000_get_bus_info(&adapter
->hw
);
1054 init_timer(&adapter
->tx_fifo_stall_timer
);
1055 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
1056 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
1058 init_timer(&adapter
->watchdog_timer
);
1059 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
1060 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1062 init_timer(&adapter
->phy_info_timer
);
1063 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
1064 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1066 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
1068 e1000_check_options(adapter
);
1070 /* Initial Wake on LAN setting
1071 * If APM wake is enabled in the EEPROM,
1072 * enable the ACPI Magic Packet filter
1075 switch (adapter
->hw
.mac_type
) {
1076 case e1000_82542_rev2_0
:
1077 case e1000_82542_rev2_1
:
1081 e1000_read_eeprom(&adapter
->hw
,
1082 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
1083 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
1086 e1000_read_eeprom(&adapter
->hw
,
1087 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
1088 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
1091 case e1000_82546_rev_3
:
1093 case e1000_80003es2lan
:
1094 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
1095 e1000_read_eeprom(&adapter
->hw
,
1096 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1101 e1000_read_eeprom(&adapter
->hw
,
1102 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1105 if (eeprom_data
& eeprom_apme_mask
)
1106 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1108 /* now that we have the eeprom settings, apply the special cases
1109 * where the eeprom may be wrong or the board simply won't support
1110 * wake on lan on a particular port */
1111 switch (pdev
->device
) {
1112 case E1000_DEV_ID_82546GB_PCIE
:
1113 adapter
->eeprom_wol
= 0;
1115 case E1000_DEV_ID_82546EB_FIBER
:
1116 case E1000_DEV_ID_82546GB_FIBER
:
1117 case E1000_DEV_ID_82571EB_FIBER
:
1118 /* Wake events only supported on port A for dual fiber
1119 * regardless of eeprom setting */
1120 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
1121 adapter
->eeprom_wol
= 0;
1123 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
1124 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
1125 case E1000_DEV_ID_82571EB_QUAD_FIBER
:
1126 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
1127 case E1000_DEV_ID_82571PT_QUAD_COPPER
:
1128 /* if quad port adapter, disable WoL on all but port A */
1129 if (global_quad_port_a
!= 0)
1130 adapter
->eeprom_wol
= 0;
1132 adapter
->quad_port_a
= 1;
1133 /* Reset for multiple quad port adapters */
1134 if (++global_quad_port_a
== 4)
1135 global_quad_port_a
= 0;
1139 /* initialize the wol settings based on the eeprom settings */
1140 adapter
->wol
= adapter
->eeprom_wol
;
1142 /* print bus type/speed/width info */
1144 struct e1000_hw
*hw
= &adapter
->hw
;
1145 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1146 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1147 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1148 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1149 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1150 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1151 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1152 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1153 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1154 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1155 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1159 printk("%s\n", print_mac(mac
, netdev
->dev_addr
));
1161 if (adapter
->hw
.bus_type
== e1000_bus_type_pci_express
) {
1162 DPRINTK(PROBE
, WARNING
, "This device (id %04x:%04x) will no "
1163 "longer be supported by this driver in the future.\n",
1164 pdev
->vendor
, pdev
->device
);
1165 DPRINTK(PROBE
, WARNING
, "please use the \"e1000e\" "
1166 "driver instead.\n");
1169 /* reset the hardware with the new settings */
1170 e1000_reset(adapter
);
1172 /* If the controller is 82573 and f/w is AMT, do not set
1173 * DRV_LOAD until the interface is up. For all other cases,
1174 * let the f/w know that the h/w is now under the control
1176 if (adapter
->hw
.mac_type
!= e1000_82573
||
1177 !e1000_check_mng_mode(&adapter
->hw
))
1178 e1000_get_hw_control(adapter
);
1180 /* tell the stack to leave us alone until e1000_open() is called */
1181 netif_carrier_off(netdev
);
1182 netif_stop_queue(netdev
);
1184 strcpy(netdev
->name
, "eth%d");
1185 if ((err
= register_netdev(netdev
)))
1188 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1194 e1000_release_hw_control(adapter
);
1196 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1197 e1000_phy_hw_reset(&adapter
->hw
);
1199 if (adapter
->hw
.flash_address
)
1200 iounmap(adapter
->hw
.flash_address
);
1202 #ifdef CONFIG_E1000_NAPI
1203 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1204 dev_put(&adapter
->polling_netdev
[i
]);
1207 kfree(adapter
->tx_ring
);
1208 kfree(adapter
->rx_ring
);
1209 #ifdef CONFIG_E1000_NAPI
1210 kfree(adapter
->polling_netdev
);
1213 iounmap(adapter
->hw
.hw_addr
);
1215 free_netdev(netdev
);
1217 pci_release_regions(pdev
);
1220 pci_disable_device(pdev
);
1225 * e1000_remove - Device Removal Routine
1226 * @pdev: PCI device information struct
1228 * e1000_remove is called by the PCI subsystem to alert the driver
1229 * that it should release a PCI device. The could be caused by a
1230 * Hot-Plug event, or because the driver is going to be removed from
1234 static void __devexit
1235 e1000_remove(struct pci_dev
*pdev
)
1237 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1238 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1239 #ifdef CONFIG_E1000_NAPI
1243 cancel_work_sync(&adapter
->reset_task
);
1245 e1000_release_manageability(adapter
);
1247 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1248 * would have already happened in close and is redundant. */
1249 e1000_release_hw_control(adapter
);
1251 #ifdef CONFIG_E1000_NAPI
1252 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1253 dev_put(&adapter
->polling_netdev
[i
]);
1256 unregister_netdev(netdev
);
1258 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1259 e1000_phy_hw_reset(&adapter
->hw
);
1261 kfree(adapter
->tx_ring
);
1262 kfree(adapter
->rx_ring
);
1263 #ifdef CONFIG_E1000_NAPI
1264 kfree(adapter
->polling_netdev
);
1267 iounmap(adapter
->hw
.hw_addr
);
1268 if (adapter
->hw
.flash_address
)
1269 iounmap(adapter
->hw
.flash_address
);
1270 pci_release_regions(pdev
);
1272 free_netdev(netdev
);
1274 pci_disable_device(pdev
);
1278 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1279 * @adapter: board private structure to initialize
1281 * e1000_sw_init initializes the Adapter private data structure.
1282 * Fields are initialized based on PCI device information and
1283 * OS network device settings (MTU size).
1286 static int __devinit
1287 e1000_sw_init(struct e1000_adapter
*adapter
)
1289 struct e1000_hw
*hw
= &adapter
->hw
;
1290 struct net_device
*netdev
= adapter
->netdev
;
1291 struct pci_dev
*pdev
= adapter
->pdev
;
1292 #ifdef CONFIG_E1000_NAPI
1296 /* PCI config space info */
1298 hw
->vendor_id
= pdev
->vendor
;
1299 hw
->device_id
= pdev
->device
;
1300 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1301 hw
->subsystem_id
= pdev
->subsystem_device
;
1302 hw
->revision_id
= pdev
->revision
;
1304 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1306 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1307 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1308 hw
->max_frame_size
= netdev
->mtu
+
1309 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1310 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1312 /* identify the MAC */
1314 if (e1000_set_mac_type(hw
)) {
1315 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1319 switch (hw
->mac_type
) {
1324 case e1000_82541_rev_2
:
1325 case e1000_82547_rev_2
:
1326 hw
->phy_init_script
= 1;
1330 e1000_set_media_type(hw
);
1332 hw
->wait_autoneg_complete
= false;
1333 hw
->tbi_compatibility_en
= true;
1334 hw
->adaptive_ifs
= true;
1336 /* Copper options */
1338 if (hw
->media_type
== e1000_media_type_copper
) {
1339 hw
->mdix
= AUTO_ALL_MODES
;
1340 hw
->disable_polarity_correction
= false;
1341 hw
->master_slave
= E1000_MASTER_SLAVE
;
1344 adapter
->num_tx_queues
= 1;
1345 adapter
->num_rx_queues
= 1;
1347 if (e1000_alloc_queues(adapter
)) {
1348 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1352 #ifdef CONFIG_E1000_NAPI
1353 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1354 adapter
->polling_netdev
[i
].priv
= adapter
;
1355 dev_hold(&adapter
->polling_netdev
[i
]);
1356 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1358 spin_lock_init(&adapter
->tx_queue_lock
);
1361 /* Explicitly disable IRQ since the NIC can be in any state. */
1362 e1000_irq_disable(adapter
);
1364 spin_lock_init(&adapter
->stats_lock
);
1366 set_bit(__E1000_DOWN
, &adapter
->flags
);
1372 * e1000_alloc_queues - Allocate memory for all rings
1373 * @adapter: board private structure to initialize
1375 * We allocate one ring per queue at run-time since we don't know the
1376 * number of queues at compile-time. The polling_netdev array is
1377 * intended for Multiqueue, but should work fine with a single queue.
1380 static int __devinit
1381 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1383 adapter
->tx_ring
= kcalloc(adapter
->num_tx_queues
,
1384 sizeof(struct e1000_tx_ring
), GFP_KERNEL
);
1385 if (!adapter
->tx_ring
)
1388 adapter
->rx_ring
= kcalloc(adapter
->num_rx_queues
,
1389 sizeof(struct e1000_rx_ring
), GFP_KERNEL
);
1390 if (!adapter
->rx_ring
) {
1391 kfree(adapter
->tx_ring
);
1395 #ifdef CONFIG_E1000_NAPI
1396 adapter
->polling_netdev
= kcalloc(adapter
->num_rx_queues
,
1397 sizeof(struct net_device
),
1399 if (!adapter
->polling_netdev
) {
1400 kfree(adapter
->tx_ring
);
1401 kfree(adapter
->rx_ring
);
1406 return E1000_SUCCESS
;
1410 * e1000_open - Called when a network interface is made active
1411 * @netdev: network interface device structure
1413 * Returns 0 on success, negative value on failure
1415 * The open entry point is called when a network interface is made
1416 * active by the system (IFF_UP). At this point all resources needed
1417 * for transmit and receive operations are allocated, the interrupt
1418 * handler is registered with the OS, the watchdog timer is started,
1419 * and the stack is notified that the interface is ready.
1423 e1000_open(struct net_device
*netdev
)
1425 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1428 /* disallow open during test */
1429 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1432 /* allocate transmit descriptors */
1433 err
= e1000_setup_all_tx_resources(adapter
);
1437 /* allocate receive descriptors */
1438 err
= e1000_setup_all_rx_resources(adapter
);
1442 e1000_power_up_phy(adapter
);
1444 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1445 if ((adapter
->hw
.mng_cookie
.status
&
1446 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1447 e1000_update_mng_vlan(adapter
);
1450 /* If AMT is enabled, let the firmware know that the network
1451 * interface is now open */
1452 if (adapter
->hw
.mac_type
== e1000_82573
&&
1453 e1000_check_mng_mode(&adapter
->hw
))
1454 e1000_get_hw_control(adapter
);
1456 /* before we allocate an interrupt, we must be ready to handle it.
1457 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1458 * as soon as we call pci_request_irq, so we have to setup our
1459 * clean_rx handler before we do so. */
1460 e1000_configure(adapter
);
1462 err
= e1000_request_irq(adapter
);
1466 /* From here on the code is the same as e1000_up() */
1467 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1469 #ifdef CONFIG_E1000_NAPI
1470 napi_enable(&adapter
->napi
);
1473 e1000_irq_enable(adapter
);
1475 /* fire a link status change interrupt to start the watchdog */
1476 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_LSC
);
1478 return E1000_SUCCESS
;
1481 e1000_release_hw_control(adapter
);
1482 e1000_power_down_phy(adapter
);
1483 e1000_free_all_rx_resources(adapter
);
1485 e1000_free_all_tx_resources(adapter
);
1487 e1000_reset(adapter
);
1493 * e1000_close - Disables a network interface
1494 * @netdev: network interface device structure
1496 * Returns 0, this is not allowed to fail
1498 * The close entry point is called when an interface is de-activated
1499 * by the OS. The hardware is still under the drivers control, but
1500 * needs to be disabled. A global MAC reset is issued to stop the
1501 * hardware, and all transmit and receive resources are freed.
1505 e1000_close(struct net_device
*netdev
)
1507 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1509 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1510 e1000_down(adapter
);
1511 e1000_power_down_phy(adapter
);
1512 e1000_free_irq(adapter
);
1514 e1000_free_all_tx_resources(adapter
);
1515 e1000_free_all_rx_resources(adapter
);
1517 /* kill manageability vlan ID if supported, but not if a vlan with
1518 * the same ID is registered on the host OS (let 8021q kill it) */
1519 if ((adapter
->hw
.mng_cookie
.status
&
1520 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1522 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1523 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1526 /* If AMT is enabled, let the firmware know that the network
1527 * interface is now closed */
1528 if (adapter
->hw
.mac_type
== e1000_82573
&&
1529 e1000_check_mng_mode(&adapter
->hw
))
1530 e1000_release_hw_control(adapter
);
1536 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1537 * @adapter: address of board private structure
1538 * @start: address of beginning of memory
1539 * @len: length of memory
1542 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1543 void *start
, unsigned long len
)
1545 unsigned long begin
= (unsigned long) start
;
1546 unsigned long end
= begin
+ len
;
1548 /* First rev 82545 and 82546 need to not allow any memory
1549 * write location to cross 64k boundary due to errata 23 */
1550 if (adapter
->hw
.mac_type
== e1000_82545
||
1551 adapter
->hw
.mac_type
== e1000_82546
) {
1552 return ((begin
^ (end
- 1)) >> 16) != 0 ? false : true;
1559 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1560 * @adapter: board private structure
1561 * @txdr: tx descriptor ring (for a specific queue) to setup
1563 * Return 0 on success, negative on failure
1567 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1568 struct e1000_tx_ring
*txdr
)
1570 struct pci_dev
*pdev
= adapter
->pdev
;
1573 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1574 txdr
->buffer_info
= vmalloc(size
);
1575 if (!txdr
->buffer_info
) {
1577 "Unable to allocate memory for the transmit descriptor ring\n");
1580 memset(txdr
->buffer_info
, 0, size
);
1582 /* round up to nearest 4K */
1584 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1585 txdr
->size
= ALIGN(txdr
->size
, 4096);
1587 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1590 vfree(txdr
->buffer_info
);
1592 "Unable to allocate memory for the transmit descriptor ring\n");
1596 /* Fix for errata 23, can't cross 64kB boundary */
1597 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1598 void *olddesc
= txdr
->desc
;
1599 dma_addr_t olddma
= txdr
->dma
;
1600 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1601 "at %p\n", txdr
->size
, txdr
->desc
);
1602 /* Try again, without freeing the previous */
1603 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1604 /* Failed allocation, critical failure */
1606 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1607 goto setup_tx_desc_die
;
1610 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1612 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1614 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1616 "Unable to allocate aligned memory "
1617 "for the transmit descriptor ring\n");
1618 vfree(txdr
->buffer_info
);
1621 /* Free old allocation, new allocation was successful */
1622 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1625 memset(txdr
->desc
, 0, txdr
->size
);
1627 txdr
->next_to_use
= 0;
1628 txdr
->next_to_clean
= 0;
1629 spin_lock_init(&txdr
->tx_lock
);
1635 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1636 * (Descriptors) for all queues
1637 * @adapter: board private structure
1639 * Return 0 on success, negative on failure
1643 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1647 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1648 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1651 "Allocation for Tx Queue %u failed\n", i
);
1652 for (i
-- ; i
>= 0; i
--)
1653 e1000_free_tx_resources(adapter
,
1654 &adapter
->tx_ring
[i
]);
1663 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1664 * @adapter: board private structure
1666 * Configure the Tx unit of the MAC after a reset.
1670 e1000_configure_tx(struct e1000_adapter
*adapter
)
1673 struct e1000_hw
*hw
= &adapter
->hw
;
1674 u32 tdlen
, tctl
, tipg
, tarc
;
1677 /* Setup the HW Tx Head and Tail descriptor pointers */
1679 switch (adapter
->num_tx_queues
) {
1682 tdba
= adapter
->tx_ring
[0].dma
;
1683 tdlen
= adapter
->tx_ring
[0].count
*
1684 sizeof(struct e1000_tx_desc
);
1685 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1686 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1687 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1688 E1000_WRITE_REG(hw
, TDT
, 0);
1689 E1000_WRITE_REG(hw
, TDH
, 0);
1690 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1691 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1695 /* Set the default values for the Tx Inter Packet Gap timer */
1696 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
&&
1697 (hw
->media_type
== e1000_media_type_fiber
||
1698 hw
->media_type
== e1000_media_type_internal_serdes
))
1699 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1701 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1703 switch (hw
->mac_type
) {
1704 case e1000_82542_rev2_0
:
1705 case e1000_82542_rev2_1
:
1706 tipg
= DEFAULT_82542_TIPG_IPGT
;
1707 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1708 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1710 case e1000_80003es2lan
:
1711 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1712 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1715 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1716 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1719 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1720 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1721 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1723 /* Set the Tx Interrupt Delay register */
1725 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1726 if (hw
->mac_type
>= e1000_82540
)
1727 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1729 /* Program the Transmit Control Register */
1731 tctl
= E1000_READ_REG(hw
, TCTL
);
1732 tctl
&= ~E1000_TCTL_CT
;
1733 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1734 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1736 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1737 tarc
= E1000_READ_REG(hw
, TARC0
);
1738 /* set the speed mode bit, we'll clear it if we're not at
1739 * gigabit link later */
1741 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1742 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1743 tarc
= E1000_READ_REG(hw
, TARC0
);
1745 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1746 tarc
= E1000_READ_REG(hw
, TARC1
);
1748 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1751 e1000_config_collision_dist(hw
);
1753 /* Setup Transmit Descriptor Settings for eop descriptor */
1754 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1756 /* only set IDE if we are delaying interrupts using the timers */
1757 if (adapter
->tx_int_delay
)
1758 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1760 if (hw
->mac_type
< e1000_82543
)
1761 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1763 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1765 /* Cache if we're 82544 running in PCI-X because we'll
1766 * need this to apply a workaround later in the send path. */
1767 if (hw
->mac_type
== e1000_82544
&&
1768 hw
->bus_type
== e1000_bus_type_pcix
)
1769 adapter
->pcix_82544
= 1;
1771 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1776 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1777 * @adapter: board private structure
1778 * @rxdr: rx descriptor ring (for a specific queue) to setup
1780 * Returns 0 on success, negative on failure
1784 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1785 struct e1000_rx_ring
*rxdr
)
1787 struct pci_dev
*pdev
= adapter
->pdev
;
1790 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1791 rxdr
->buffer_info
= vmalloc(size
);
1792 if (!rxdr
->buffer_info
) {
1794 "Unable to allocate memory for the receive descriptor ring\n");
1797 memset(rxdr
->buffer_info
, 0, size
);
1799 rxdr
->ps_page
= kcalloc(rxdr
->count
, sizeof(struct e1000_ps_page
),
1801 if (!rxdr
->ps_page
) {
1802 vfree(rxdr
->buffer_info
);
1804 "Unable to allocate memory for the receive descriptor ring\n");
1808 rxdr
->ps_page_dma
= kcalloc(rxdr
->count
,
1809 sizeof(struct e1000_ps_page_dma
),
1811 if (!rxdr
->ps_page_dma
) {
1812 vfree(rxdr
->buffer_info
);
1813 kfree(rxdr
->ps_page
);
1815 "Unable to allocate memory for the receive descriptor ring\n");
1819 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1820 desc_len
= sizeof(struct e1000_rx_desc
);
1822 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1824 /* Round up to nearest 4K */
1826 rxdr
->size
= rxdr
->count
* desc_len
;
1827 rxdr
->size
= ALIGN(rxdr
->size
, 4096);
1829 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1833 "Unable to allocate memory for the receive descriptor ring\n");
1835 vfree(rxdr
->buffer_info
);
1836 kfree(rxdr
->ps_page
);
1837 kfree(rxdr
->ps_page_dma
);
1841 /* Fix for errata 23, can't cross 64kB boundary */
1842 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1843 void *olddesc
= rxdr
->desc
;
1844 dma_addr_t olddma
= rxdr
->dma
;
1845 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1846 "at %p\n", rxdr
->size
, rxdr
->desc
);
1847 /* Try again, without freeing the previous */
1848 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1849 /* Failed allocation, critical failure */
1851 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1853 "Unable to allocate memory "
1854 "for the receive descriptor ring\n");
1855 goto setup_rx_desc_die
;
1858 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1860 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1862 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1864 "Unable to allocate aligned memory "
1865 "for the receive descriptor ring\n");
1866 goto setup_rx_desc_die
;
1868 /* Free old allocation, new allocation was successful */
1869 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1872 memset(rxdr
->desc
, 0, rxdr
->size
);
1874 rxdr
->next_to_clean
= 0;
1875 rxdr
->next_to_use
= 0;
1881 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1882 * (Descriptors) for all queues
1883 * @adapter: board private structure
1885 * Return 0 on success, negative on failure
1889 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1893 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1894 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1897 "Allocation for Rx Queue %u failed\n", i
);
1898 for (i
-- ; i
>= 0; i
--)
1899 e1000_free_rx_resources(adapter
,
1900 &adapter
->rx_ring
[i
]);
1909 * e1000_setup_rctl - configure the receive control registers
1910 * @adapter: Board private structure
1912 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1913 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1915 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1919 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1923 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1925 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1927 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1928 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1929 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1931 if (adapter
->hw
.tbi_compatibility_on
== 1)
1932 rctl
|= E1000_RCTL_SBP
;
1934 rctl
&= ~E1000_RCTL_SBP
;
1936 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1937 rctl
&= ~E1000_RCTL_LPE
;
1939 rctl
|= E1000_RCTL_LPE
;
1941 /* Setup buffer sizes */
1942 rctl
&= ~E1000_RCTL_SZ_4096
;
1943 rctl
|= E1000_RCTL_BSEX
;
1944 switch (adapter
->rx_buffer_len
) {
1945 case E1000_RXBUFFER_256
:
1946 rctl
|= E1000_RCTL_SZ_256
;
1947 rctl
&= ~E1000_RCTL_BSEX
;
1949 case E1000_RXBUFFER_512
:
1950 rctl
|= E1000_RCTL_SZ_512
;
1951 rctl
&= ~E1000_RCTL_BSEX
;
1953 case E1000_RXBUFFER_1024
:
1954 rctl
|= E1000_RCTL_SZ_1024
;
1955 rctl
&= ~E1000_RCTL_BSEX
;
1957 case E1000_RXBUFFER_2048
:
1959 rctl
|= E1000_RCTL_SZ_2048
;
1960 rctl
&= ~E1000_RCTL_BSEX
;
1962 case E1000_RXBUFFER_4096
:
1963 rctl
|= E1000_RCTL_SZ_4096
;
1965 case E1000_RXBUFFER_8192
:
1966 rctl
|= E1000_RCTL_SZ_8192
;
1968 case E1000_RXBUFFER_16384
:
1969 rctl
|= E1000_RCTL_SZ_16384
;
1973 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1974 /* 82571 and greater support packet-split where the protocol
1975 * header is placed in skb->data and the packet data is
1976 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1977 * In the case of a non-split, skb->data is linearly filled,
1978 * followed by the page buffers. Therefore, skb->data is
1979 * sized to hold the largest protocol header.
1981 /* allocations using alloc_page take too long for regular MTU
1982 * so only enable packet split for jumbo frames */
1983 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1984 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1985 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1986 adapter
->rx_ps_pages
= pages
;
1988 adapter
->rx_ps_pages
= 0;
1990 if (adapter
->rx_ps_pages
) {
1991 /* Configure extra packet-split registers */
1992 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1993 rfctl
|= E1000_RFCTL_EXTEN
;
1994 /* disable packet split support for IPv6 extension headers,
1995 * because some malformed IPv6 headers can hang the RX */
1996 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
1997 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
1999 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
2001 rctl
|= E1000_RCTL_DTYP_PS
;
2003 psrctl
|= adapter
->rx_ps_bsize0
>>
2004 E1000_PSRCTL_BSIZE0_SHIFT
;
2006 switch (adapter
->rx_ps_pages
) {
2008 psrctl
|= PAGE_SIZE
<<
2009 E1000_PSRCTL_BSIZE3_SHIFT
;
2011 psrctl
|= PAGE_SIZE
<<
2012 E1000_PSRCTL_BSIZE2_SHIFT
;
2014 psrctl
|= PAGE_SIZE
>>
2015 E1000_PSRCTL_BSIZE1_SHIFT
;
2019 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
2022 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2026 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
2027 * @adapter: board private structure
2029 * Configure the Rx unit of the MAC after a reset.
2033 e1000_configure_rx(struct e1000_adapter
*adapter
)
2036 struct e1000_hw
*hw
= &adapter
->hw
;
2037 u32 rdlen
, rctl
, rxcsum
, ctrl_ext
;
2039 if (adapter
->rx_ps_pages
) {
2040 /* this is a 32 byte descriptor */
2041 rdlen
= adapter
->rx_ring
[0].count
*
2042 sizeof(union e1000_rx_desc_packet_split
);
2043 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2044 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2046 rdlen
= adapter
->rx_ring
[0].count
*
2047 sizeof(struct e1000_rx_desc
);
2048 adapter
->clean_rx
= e1000_clean_rx_irq
;
2049 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2052 /* disable receives while setting up the descriptors */
2053 rctl
= E1000_READ_REG(hw
, RCTL
);
2054 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
2056 /* set the Receive Delay Timer Register */
2057 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
2059 if (hw
->mac_type
>= e1000_82540
) {
2060 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
2061 if (adapter
->itr_setting
!= 0)
2062 E1000_WRITE_REG(hw
, ITR
,
2063 1000000000 / (adapter
->itr
* 256));
2066 if (hw
->mac_type
>= e1000_82571
) {
2067 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
2068 /* Reset delay timers after every interrupt */
2069 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2070 #ifdef CONFIG_E1000_NAPI
2071 /* Auto-Mask interrupts upon ICR access */
2072 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2073 E1000_WRITE_REG(hw
, IAM
, 0xffffffff);
2075 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
2076 E1000_WRITE_FLUSH(hw
);
2079 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2080 * the Base and Length of the Rx Descriptor Ring */
2081 switch (adapter
->num_rx_queues
) {
2084 rdba
= adapter
->rx_ring
[0].dma
;
2085 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
2086 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
2087 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
2088 E1000_WRITE_REG(hw
, RDT
, 0);
2089 E1000_WRITE_REG(hw
, RDH
, 0);
2090 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
2091 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
2095 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2096 if (hw
->mac_type
>= e1000_82543
) {
2097 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
2098 if (adapter
->rx_csum
) {
2099 rxcsum
|= E1000_RXCSUM_TUOFL
;
2101 /* Enable 82571 IPv4 payload checksum for UDP fragments
2102 * Must be used in conjunction with packet-split. */
2103 if ((hw
->mac_type
>= e1000_82571
) &&
2104 (adapter
->rx_ps_pages
)) {
2105 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2108 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2109 /* don't need to clear IPPCSE as it defaults to 0 */
2111 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
2114 /* enable early receives on 82573, only takes effect if using > 2048
2115 * byte total frame size. for example only for jumbo frames */
2116 #define E1000_ERT_2048 0x100
2117 if (hw
->mac_type
== e1000_82573
)
2118 E1000_WRITE_REG(hw
, ERT
, E1000_ERT_2048
);
2120 /* Enable Receives */
2121 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2125 * e1000_free_tx_resources - Free Tx Resources per Queue
2126 * @adapter: board private structure
2127 * @tx_ring: Tx descriptor ring for a specific queue
2129 * Free all transmit software resources
2133 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2134 struct e1000_tx_ring
*tx_ring
)
2136 struct pci_dev
*pdev
= adapter
->pdev
;
2138 e1000_clean_tx_ring(adapter
, tx_ring
);
2140 vfree(tx_ring
->buffer_info
);
2141 tx_ring
->buffer_info
= NULL
;
2143 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2145 tx_ring
->desc
= NULL
;
2149 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2150 * @adapter: board private structure
2152 * Free all transmit software resources
2156 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2160 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2161 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2165 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2166 struct e1000_buffer
*buffer_info
)
2168 if (buffer_info
->dma
) {
2169 pci_unmap_page(adapter
->pdev
,
2171 buffer_info
->length
,
2173 buffer_info
->dma
= 0;
2175 if (buffer_info
->skb
) {
2176 dev_kfree_skb_any(buffer_info
->skb
);
2177 buffer_info
->skb
= NULL
;
2179 /* buffer_info must be completely set up in the transmit path */
2183 * e1000_clean_tx_ring - Free Tx Buffers
2184 * @adapter: board private structure
2185 * @tx_ring: ring to be cleaned
2189 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2190 struct e1000_tx_ring
*tx_ring
)
2192 struct e1000_buffer
*buffer_info
;
2196 /* Free all the Tx ring sk_buffs */
2198 for (i
= 0; i
< tx_ring
->count
; i
++) {
2199 buffer_info
= &tx_ring
->buffer_info
[i
];
2200 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2203 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2204 memset(tx_ring
->buffer_info
, 0, size
);
2206 /* Zero out the descriptor ring */
2208 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2210 tx_ring
->next_to_use
= 0;
2211 tx_ring
->next_to_clean
= 0;
2212 tx_ring
->last_tx_tso
= 0;
2214 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2215 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2219 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2220 * @adapter: board private structure
2224 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2228 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2229 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2233 * e1000_free_rx_resources - Free Rx Resources
2234 * @adapter: board private structure
2235 * @rx_ring: ring to clean the resources from
2237 * Free all receive software resources
2241 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2242 struct e1000_rx_ring
*rx_ring
)
2244 struct pci_dev
*pdev
= adapter
->pdev
;
2246 e1000_clean_rx_ring(adapter
, rx_ring
);
2248 vfree(rx_ring
->buffer_info
);
2249 rx_ring
->buffer_info
= NULL
;
2250 kfree(rx_ring
->ps_page
);
2251 rx_ring
->ps_page
= NULL
;
2252 kfree(rx_ring
->ps_page_dma
);
2253 rx_ring
->ps_page_dma
= NULL
;
2255 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2257 rx_ring
->desc
= NULL
;
2261 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2262 * @adapter: board private structure
2264 * Free all receive software resources
2268 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2272 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2273 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2277 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2278 * @adapter: board private structure
2279 * @rx_ring: ring to free buffers from
2283 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2284 struct e1000_rx_ring
*rx_ring
)
2286 struct e1000_buffer
*buffer_info
;
2287 struct e1000_ps_page
*ps_page
;
2288 struct e1000_ps_page_dma
*ps_page_dma
;
2289 struct pci_dev
*pdev
= adapter
->pdev
;
2293 /* Free all the Rx ring sk_buffs */
2294 for (i
= 0; i
< rx_ring
->count
; i
++) {
2295 buffer_info
= &rx_ring
->buffer_info
[i
];
2296 if (buffer_info
->skb
) {
2297 pci_unmap_single(pdev
,
2299 buffer_info
->length
,
2300 PCI_DMA_FROMDEVICE
);
2302 dev_kfree_skb(buffer_info
->skb
);
2303 buffer_info
->skb
= NULL
;
2305 ps_page
= &rx_ring
->ps_page
[i
];
2306 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2307 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2308 if (!ps_page
->ps_page
[j
]) break;
2309 pci_unmap_page(pdev
,
2310 ps_page_dma
->ps_page_dma
[j
],
2311 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2312 ps_page_dma
->ps_page_dma
[j
] = 0;
2313 put_page(ps_page
->ps_page
[j
]);
2314 ps_page
->ps_page
[j
] = NULL
;
2318 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2319 memset(rx_ring
->buffer_info
, 0, size
);
2320 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2321 memset(rx_ring
->ps_page
, 0, size
);
2322 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2323 memset(rx_ring
->ps_page_dma
, 0, size
);
2325 /* Zero out the descriptor ring */
2327 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2329 rx_ring
->next_to_clean
= 0;
2330 rx_ring
->next_to_use
= 0;
2332 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2333 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2337 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2338 * @adapter: board private structure
2342 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2346 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2347 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2350 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2351 * and memory write and invalidate disabled for certain operations
2354 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2356 struct net_device
*netdev
= adapter
->netdev
;
2359 e1000_pci_clear_mwi(&adapter
->hw
);
2361 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2362 rctl
|= E1000_RCTL_RST
;
2363 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2364 E1000_WRITE_FLUSH(&adapter
->hw
);
2367 if (netif_running(netdev
))
2368 e1000_clean_all_rx_rings(adapter
);
2372 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2374 struct net_device
*netdev
= adapter
->netdev
;
2377 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2378 rctl
&= ~E1000_RCTL_RST
;
2379 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2380 E1000_WRITE_FLUSH(&adapter
->hw
);
2383 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2384 e1000_pci_set_mwi(&adapter
->hw
);
2386 if (netif_running(netdev
)) {
2387 /* No need to loop, because 82542 supports only 1 queue */
2388 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2389 e1000_configure_rx(adapter
);
2390 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2395 * e1000_set_mac - Change the Ethernet Address of the NIC
2396 * @netdev: network interface device structure
2397 * @p: pointer to an address structure
2399 * Returns 0 on success, negative on failure
2403 e1000_set_mac(struct net_device
*netdev
, void *p
)
2405 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2406 struct sockaddr
*addr
= p
;
2408 if (!is_valid_ether_addr(addr
->sa_data
))
2409 return -EADDRNOTAVAIL
;
2411 /* 82542 2.0 needs to be in reset to write receive address registers */
2413 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2414 e1000_enter_82542_rst(adapter
);
2416 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2417 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2419 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2421 /* With 82571 controllers, LAA may be overwritten (with the default)
2422 * due to controller reset from the other port. */
2423 if (adapter
->hw
.mac_type
== e1000_82571
) {
2424 /* activate the work around */
2425 adapter
->hw
.laa_is_present
= 1;
2427 /* Hold a copy of the LAA in RAR[14] This is done so that
2428 * between the time RAR[0] gets clobbered and the time it
2429 * gets fixed (in e1000_watchdog), the actual LAA is in one
2430 * of the RARs and no incoming packets directed to this port
2431 * are dropped. Eventaully the LAA will be in RAR[0] and
2433 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2434 E1000_RAR_ENTRIES
- 1);
2437 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2438 e1000_leave_82542_rst(adapter
);
2444 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
2445 * @netdev: network interface device structure
2447 * The set_rx_mode entry point is called whenever the unicast or multicast
2448 * address lists or the network interface flags are updated. This routine is
2449 * responsible for configuring the hardware for proper unicast, multicast,
2450 * promiscuous mode, and all-multi behavior.
2454 e1000_set_rx_mode(struct net_device
*netdev
)
2456 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2457 struct e1000_hw
*hw
= &adapter
->hw
;
2458 struct dev_addr_list
*uc_ptr
;
2459 struct dev_addr_list
*mc_ptr
;
2462 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2463 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2464 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2465 E1000_NUM_MTA_REGISTERS
;
2467 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2468 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2470 /* reserve RAR[14] for LAA over-write work-around */
2471 if (adapter
->hw
.mac_type
== e1000_82571
)
2474 /* Check for Promiscuous and All Multicast modes */
2476 rctl
= E1000_READ_REG(hw
, RCTL
);
2478 if (netdev
->flags
& IFF_PROMISC
) {
2479 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2480 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2481 rctl
|= E1000_RCTL_MPE
;
2483 rctl
&= ~E1000_RCTL_MPE
;
2487 if (netdev
->uc_count
> rar_entries
- 1) {
2488 rctl
|= E1000_RCTL_UPE
;
2489 } else if (!(netdev
->flags
& IFF_PROMISC
)) {
2490 rctl
&= ~E1000_RCTL_UPE
;
2491 uc_ptr
= netdev
->uc_list
;
2494 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2496 /* 82542 2.0 needs to be in reset to write receive address registers */
2498 if (hw
->mac_type
== e1000_82542_rev2_0
)
2499 e1000_enter_82542_rst(adapter
);
2501 /* load the first 14 addresses into the exact filters 1-14. Unicast
2502 * addresses take precedence to avoid disabling unicast filtering
2505 * RAR 0 is used for the station MAC adddress
2506 * if there are not 14 addresses, go ahead and clear the filters
2507 * -- with 82571 controllers only 0-13 entries are filled here
2509 mc_ptr
= netdev
->mc_list
;
2511 for (i
= 1; i
< rar_entries
; i
++) {
2513 e1000_rar_set(hw
, uc_ptr
->da_addr
, i
);
2514 uc_ptr
= uc_ptr
->next
;
2515 } else if (mc_ptr
) {
2516 e1000_rar_set(hw
, mc_ptr
->da_addr
, i
);
2517 mc_ptr
= mc_ptr
->next
;
2519 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2520 E1000_WRITE_FLUSH(hw
);
2521 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2522 E1000_WRITE_FLUSH(hw
);
2525 WARN_ON(uc_ptr
!= NULL
);
2527 /* clear the old settings from the multicast hash table */
2529 for (i
= 0; i
< mta_reg_count
; i
++) {
2530 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2531 E1000_WRITE_FLUSH(hw
);
2534 /* load any remaining addresses into the hash table */
2536 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2537 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->da_addr
);
2538 e1000_mta_set(hw
, hash_value
);
2541 if (hw
->mac_type
== e1000_82542_rev2_0
)
2542 e1000_leave_82542_rst(adapter
);
2545 /* Need to wait a few seconds after link up to get diagnostic information from
2549 e1000_update_phy_info(unsigned long data
)
2551 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2552 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2556 * e1000_82547_tx_fifo_stall - Timer Call-back
2557 * @data: pointer to adapter cast into an unsigned long
2561 e1000_82547_tx_fifo_stall(unsigned long data
)
2563 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2564 struct net_device
*netdev
= adapter
->netdev
;
2567 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2568 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2569 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2570 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2571 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2572 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2573 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2574 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2575 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2576 tctl
& ~E1000_TCTL_EN
);
2577 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2578 adapter
->tx_head_addr
);
2579 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2580 adapter
->tx_head_addr
);
2581 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2582 adapter
->tx_head_addr
);
2583 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2584 adapter
->tx_head_addr
);
2585 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2586 E1000_WRITE_FLUSH(&adapter
->hw
);
2588 adapter
->tx_fifo_head
= 0;
2589 atomic_set(&adapter
->tx_fifo_stall
, 0);
2590 netif_wake_queue(netdev
);
2592 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2598 * e1000_watchdog - Timer Call-back
2599 * @data: pointer to adapter cast into an unsigned long
2602 e1000_watchdog(unsigned long data
)
2604 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2605 struct net_device
*netdev
= adapter
->netdev
;
2606 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2610 ret_val
= e1000_check_for_link(&adapter
->hw
);
2611 if ((ret_val
== E1000_ERR_PHY
) &&
2612 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2613 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2614 /* See e1000_kumeran_lock_loss_workaround() */
2616 "Gigabit has been disabled, downgrading speed\n");
2619 if (adapter
->hw
.mac_type
== e1000_82573
) {
2620 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2621 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2622 e1000_update_mng_vlan(adapter
);
2625 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2626 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2627 link
= !adapter
->hw
.serdes_link_down
;
2629 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2632 if (!netif_carrier_ok(netdev
)) {
2635 e1000_get_speed_and_duplex(&adapter
->hw
,
2636 &adapter
->link_speed
,
2637 &adapter
->link_duplex
);
2639 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
2640 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s, "
2641 "Flow Control: %s\n",
2642 adapter
->link_speed
,
2643 adapter
->link_duplex
== FULL_DUPLEX
?
2644 "Full Duplex" : "Half Duplex",
2645 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2646 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2647 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2648 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2650 /* tweak tx_queue_len according to speed/duplex
2651 * and adjust the timeout factor */
2652 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2653 adapter
->tx_timeout_factor
= 1;
2654 switch (adapter
->link_speed
) {
2657 netdev
->tx_queue_len
= 10;
2658 adapter
->tx_timeout_factor
= 8;
2662 netdev
->tx_queue_len
= 100;
2663 /* maybe add some timeout factor ? */
2667 if ((adapter
->hw
.mac_type
== e1000_82571
||
2668 adapter
->hw
.mac_type
== e1000_82572
) &&
2671 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2672 tarc0
&= ~(1 << 21);
2673 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2676 /* disable TSO for pcie and 10/100 speeds, to avoid
2677 * some hardware issues */
2678 if (!adapter
->tso_force
&&
2679 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2680 switch (adapter
->link_speed
) {
2684 "10/100 speed: disabling TSO\n");
2685 netdev
->features
&= ~NETIF_F_TSO
;
2686 netdev
->features
&= ~NETIF_F_TSO6
;
2689 netdev
->features
|= NETIF_F_TSO
;
2690 netdev
->features
|= NETIF_F_TSO6
;
2698 /* enable transmits in the hardware, need to do this
2699 * after setting TARC0 */
2700 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2701 tctl
|= E1000_TCTL_EN
;
2702 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2704 netif_carrier_on(netdev
);
2705 netif_wake_queue(netdev
);
2706 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2707 adapter
->smartspeed
= 0;
2709 /* make sure the receive unit is started */
2710 if (adapter
->hw
.rx_needs_kicking
) {
2711 struct e1000_hw
*hw
= &adapter
->hw
;
2712 u32 rctl
= E1000_READ_REG(hw
, RCTL
);
2713 E1000_WRITE_REG(hw
, RCTL
, rctl
| E1000_RCTL_EN
);
2717 if (netif_carrier_ok(netdev
)) {
2718 adapter
->link_speed
= 0;
2719 adapter
->link_duplex
= 0;
2720 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2721 netif_carrier_off(netdev
);
2722 netif_stop_queue(netdev
);
2723 mod_timer(&adapter
->phy_info_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2725 /* 80003ES2LAN workaround--
2726 * For packet buffer work-around on link down event;
2727 * disable receives in the ISR and
2728 * reset device here in the watchdog
2730 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2732 schedule_work(&adapter
->reset_task
);
2735 e1000_smartspeed(adapter
);
2738 e1000_update_stats(adapter
);
2740 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2741 adapter
->tpt_old
= adapter
->stats
.tpt
;
2742 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2743 adapter
->colc_old
= adapter
->stats
.colc
;
2745 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2746 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2747 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2748 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2750 e1000_update_adaptive(&adapter
->hw
);
2752 if (!netif_carrier_ok(netdev
)) {
2753 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2754 /* We've lost link, so the controller stops DMA,
2755 * but we've got queued Tx work that's never going
2756 * to get done, so reset controller to flush Tx.
2757 * (Do the reset outside of interrupt context). */
2758 adapter
->tx_timeout_count
++;
2759 schedule_work(&adapter
->reset_task
);
2763 /* Cause software interrupt to ensure rx ring is cleaned */
2764 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2766 /* Force detection of hung controller every watchdog period */
2767 adapter
->detect_tx_hung
= true;
2769 /* With 82571 controllers, LAA may be overwritten due to controller
2770 * reset from the other port. Set the appropriate LAA in RAR[0] */
2771 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2772 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2774 /* Reset the timer */
2775 mod_timer(&adapter
->watchdog_timer
, round_jiffies(jiffies
+ 2 * HZ
));
2778 enum latency_range
{
2782 latency_invalid
= 255
2786 * e1000_update_itr - update the dynamic ITR value based on statistics
2787 * Stores a new ITR value based on packets and byte
2788 * counts during the last interrupt. The advantage of per interrupt
2789 * computation is faster updates and more accurate ITR for the current
2790 * traffic pattern. Constants in this function were computed
2791 * based on theoretical maximum wire speed and thresholds were set based
2792 * on testing data as well as attempting to minimize response time
2793 * while increasing bulk throughput.
2794 * this functionality is controlled by the InterruptThrottleRate module
2795 * parameter (see e1000_param.c)
2796 * @adapter: pointer to adapter
2797 * @itr_setting: current adapter->itr
2798 * @packets: the number of packets during this measurement interval
2799 * @bytes: the number of bytes during this measurement interval
2801 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2806 unsigned int retval
= itr_setting
;
2807 struct e1000_hw
*hw
= &adapter
->hw
;
2809 if (unlikely(hw
->mac_type
< e1000_82540
))
2810 goto update_itr_done
;
2813 goto update_itr_done
;
2815 switch (itr_setting
) {
2816 case lowest_latency
:
2817 /* jumbo frames get bulk treatment*/
2818 if (bytes
/packets
> 8000)
2819 retval
= bulk_latency
;
2820 else if ((packets
< 5) && (bytes
> 512))
2821 retval
= low_latency
;
2823 case low_latency
: /* 50 usec aka 20000 ints/s */
2824 if (bytes
> 10000) {
2825 /* jumbo frames need bulk latency setting */
2826 if (bytes
/packets
> 8000)
2827 retval
= bulk_latency
;
2828 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2829 retval
= bulk_latency
;
2830 else if ((packets
> 35))
2831 retval
= lowest_latency
;
2832 } else if (bytes
/packets
> 2000)
2833 retval
= bulk_latency
;
2834 else if (packets
<= 2 && bytes
< 512)
2835 retval
= lowest_latency
;
2837 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2838 if (bytes
> 25000) {
2840 retval
= low_latency
;
2841 } else if (bytes
< 6000) {
2842 retval
= low_latency
;
2851 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2853 struct e1000_hw
*hw
= &adapter
->hw
;
2855 u32 new_itr
= adapter
->itr
;
2857 if (unlikely(hw
->mac_type
< e1000_82540
))
2860 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2861 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2867 adapter
->tx_itr
= e1000_update_itr(adapter
,
2869 adapter
->total_tx_packets
,
2870 adapter
->total_tx_bytes
);
2871 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2872 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2873 adapter
->tx_itr
= low_latency
;
2875 adapter
->rx_itr
= e1000_update_itr(adapter
,
2877 adapter
->total_rx_packets
,
2878 adapter
->total_rx_bytes
);
2879 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2880 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2881 adapter
->rx_itr
= low_latency
;
2883 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2885 switch (current_itr
) {
2886 /* counts and packets in update_itr are dependent on these numbers */
2887 case lowest_latency
:
2891 new_itr
= 20000; /* aka hwitr = ~200 */
2901 if (new_itr
!= adapter
->itr
) {
2902 /* this attempts to bias the interrupt rate towards Bulk
2903 * by adding intermediate steps when interrupt rate is
2905 new_itr
= new_itr
> adapter
->itr
?
2906 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2908 adapter
->itr
= new_itr
;
2909 E1000_WRITE_REG(hw
, ITR
, 1000000000 / (new_itr
* 256));
2915 #define E1000_TX_FLAGS_CSUM 0x00000001
2916 #define E1000_TX_FLAGS_VLAN 0x00000002
2917 #define E1000_TX_FLAGS_TSO 0x00000004
2918 #define E1000_TX_FLAGS_IPV4 0x00000008
2919 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2920 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2923 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2924 struct sk_buff
*skb
)
2926 struct e1000_context_desc
*context_desc
;
2927 struct e1000_buffer
*buffer_info
;
2930 u16 ipcse
= 0, tucse
, mss
;
2931 u8 ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2934 if (skb_is_gso(skb
)) {
2935 if (skb_header_cloned(skb
)) {
2936 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2941 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
2942 mss
= skb_shinfo(skb
)->gso_size
;
2943 if (skb
->protocol
== htons(ETH_P_IP
)) {
2944 struct iphdr
*iph
= ip_hdr(skb
);
2947 tcp_hdr(skb
)->check
= ~csum_tcpudp_magic(iph
->saddr
,
2951 cmd_length
= E1000_TXD_CMD_IP
;
2952 ipcse
= skb_transport_offset(skb
) - 1;
2953 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2954 ipv6_hdr(skb
)->payload_len
= 0;
2955 tcp_hdr(skb
)->check
=
2956 ~csum_ipv6_magic(&ipv6_hdr(skb
)->saddr
,
2957 &ipv6_hdr(skb
)->daddr
,
2961 ipcss
= skb_network_offset(skb
);
2962 ipcso
= (void *)&(ip_hdr(skb
)->check
) - (void *)skb
->data
;
2963 tucss
= skb_transport_offset(skb
);
2964 tucso
= (void *)&(tcp_hdr(skb
)->check
) - (void *)skb
->data
;
2967 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2968 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2970 i
= tx_ring
->next_to_use
;
2971 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2972 buffer_info
= &tx_ring
->buffer_info
[i
];
2974 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2975 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2976 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2977 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2978 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2979 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2980 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2981 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2982 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2984 buffer_info
->time_stamp
= jiffies
;
2985 buffer_info
->next_to_watch
= i
;
2987 if (++i
== tx_ring
->count
) i
= 0;
2988 tx_ring
->next_to_use
= i
;
2996 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2997 struct sk_buff
*skb
)
2999 struct e1000_context_desc
*context_desc
;
3000 struct e1000_buffer
*buffer_info
;
3004 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
3005 css
= skb_transport_offset(skb
);
3007 i
= tx_ring
->next_to_use
;
3008 buffer_info
= &tx_ring
->buffer_info
[i
];
3009 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
3011 context_desc
->lower_setup
.ip_config
= 0;
3012 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
3013 context_desc
->upper_setup
.tcp_fields
.tucso
=
3014 css
+ skb
->csum_offset
;
3015 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
3016 context_desc
->tcp_seg_setup
.data
= 0;
3017 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
3019 buffer_info
->time_stamp
= jiffies
;
3020 buffer_info
->next_to_watch
= i
;
3022 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3023 tx_ring
->next_to_use
= i
;
3031 #define E1000_MAX_TXD_PWR 12
3032 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
3035 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
3036 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
3037 unsigned int nr_frags
, unsigned int mss
)
3039 struct e1000_buffer
*buffer_info
;
3040 unsigned int len
= skb
->len
;
3041 unsigned int offset
= 0, size
, count
= 0, i
;
3043 len
-= skb
->data_len
;
3045 i
= tx_ring
->next_to_use
;
3048 buffer_info
= &tx_ring
->buffer_info
[i
];
3049 size
= min(len
, max_per_txd
);
3050 /* Workaround for Controller erratum --
3051 * descriptor for non-tso packet in a linear SKB that follows a
3052 * tso gets written back prematurely before the data is fully
3053 * DMA'd to the controller */
3054 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
3056 tx_ring
->last_tx_tso
= 0;
3060 /* Workaround for premature desc write-backs
3061 * in TSO mode. Append 4-byte sentinel desc */
3062 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
3064 /* work-around for errata 10 and it applies
3065 * to all controllers in PCI-X mode
3066 * The fix is to make sure that the first descriptor of a
3067 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
3069 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3070 (size
> 2015) && count
== 0))
3073 /* Workaround for potential 82544 hang in PCI-X. Avoid
3074 * terminating buffers within evenly-aligned dwords. */
3075 if (unlikely(adapter
->pcix_82544
&&
3076 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
3080 buffer_info
->length
= size
;
3082 pci_map_single(adapter
->pdev
,
3086 buffer_info
->time_stamp
= jiffies
;
3087 buffer_info
->next_to_watch
= i
;
3092 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3095 for (f
= 0; f
< nr_frags
; f
++) {
3096 struct skb_frag_struct
*frag
;
3098 frag
= &skb_shinfo(skb
)->frags
[f
];
3100 offset
= frag
->page_offset
;
3103 buffer_info
= &tx_ring
->buffer_info
[i
];
3104 size
= min(len
, max_per_txd
);
3105 /* Workaround for premature desc write-backs
3106 * in TSO mode. Append 4-byte sentinel desc */
3107 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
3109 /* Workaround for potential 82544 hang in PCI-X.
3110 * Avoid terminating buffers within evenly-aligned
3112 if (unlikely(adapter
->pcix_82544
&&
3113 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
3117 buffer_info
->length
= size
;
3119 pci_map_page(adapter
->pdev
,
3124 buffer_info
->time_stamp
= jiffies
;
3125 buffer_info
->next_to_watch
= i
;
3130 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3134 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
3135 tx_ring
->buffer_info
[i
].skb
= skb
;
3136 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3142 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
3143 int tx_flags
, int count
)
3145 struct e1000_tx_desc
*tx_desc
= NULL
;
3146 struct e1000_buffer
*buffer_info
;
3147 u32 txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3150 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3151 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3153 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3155 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3156 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3159 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3160 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3161 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3164 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3165 txd_lower
|= E1000_TXD_CMD_VLE
;
3166 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3169 i
= tx_ring
->next_to_use
;
3172 buffer_info
= &tx_ring
->buffer_info
[i
];
3173 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3174 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3175 tx_desc
->lower
.data
=
3176 cpu_to_le32(txd_lower
| buffer_info
->length
);
3177 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3178 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3181 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3183 /* Force memory writes to complete before letting h/w
3184 * know there are new descriptors to fetch. (Only
3185 * applicable for weak-ordered memory model archs,
3186 * such as IA-64). */
3189 tx_ring
->next_to_use
= i
;
3190 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
3191 /* we need this if more than one processor can write to our tail
3192 * at a time, it syncronizes IO on IA64/Altix systems */
3197 * 82547 workaround to avoid controller hang in half-duplex environment.
3198 * The workaround is to avoid queuing a large packet that would span
3199 * the internal Tx FIFO ring boundary by notifying the stack to resend
3200 * the packet at a later time. This gives the Tx FIFO an opportunity to
3201 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3202 * to the beginning of the Tx FIFO.
3205 #define E1000_FIFO_HDR 0x10
3206 #define E1000_82547_PAD_LEN 0x3E0
3209 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3211 u32 fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3212 u32 skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3214 skb_fifo_len
= ALIGN(skb_fifo_len
, E1000_FIFO_HDR
);
3216 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3217 goto no_fifo_stall_required
;
3219 if (atomic_read(&adapter
->tx_fifo_stall
))
3222 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3223 atomic_set(&adapter
->tx_fifo_stall
, 1);
3227 no_fifo_stall_required
:
3228 adapter
->tx_fifo_head
+= skb_fifo_len
;
3229 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3230 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3234 #define MINIMUM_DHCP_PACKET_SIZE 282
3236 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3238 struct e1000_hw
*hw
= &adapter
->hw
;
3240 if (vlan_tx_tag_present(skb
)) {
3241 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
3242 ( adapter
->hw
.mng_cookie
.status
&
3243 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3246 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3247 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
3248 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3249 const struct iphdr
*ip
=
3250 (struct iphdr
*)((u8
*)skb
->data
+14);
3251 if (IPPROTO_UDP
== ip
->protocol
) {
3252 struct udphdr
*udp
=
3253 (struct udphdr
*)((u8
*)ip
+
3255 if (ntohs(udp
->dest
) == 67) {
3256 offset
= (u8
*)udp
+ 8 - skb
->data
;
3257 length
= skb
->len
- offset
;
3259 return e1000_mng_write_dhcp_info(hw
,
3269 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3271 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3272 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3274 netif_stop_queue(netdev
);
3275 /* Herbert's original patch had:
3276 * smp_mb__after_netif_stop_queue();
3277 * but since that doesn't exist yet, just open code it. */
3280 /* We need to check again in a case another CPU has just
3281 * made room available. */
3282 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3286 netif_start_queue(netdev
);
3287 ++adapter
->restart_queue
;
3291 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3292 struct e1000_tx_ring
*tx_ring
, int size
)
3294 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3296 return __e1000_maybe_stop_tx(netdev
, size
);
3299 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3301 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3303 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3304 struct e1000_tx_ring
*tx_ring
;
3305 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3306 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3307 unsigned int tx_flags
= 0;
3308 unsigned int len
= skb
->len
- skb
->data_len
;
3309 unsigned long flags
;
3310 unsigned int nr_frags
;
3316 /* This goes back to the question of how to logically map a tx queue
3317 * to a flow. Right now, performance is impacted slightly negatively
3318 * if using multiple tx queues. If the stack breaks away from a
3319 * single qdisc implementation, we can look at this again. */
3320 tx_ring
= adapter
->tx_ring
;
3322 if (unlikely(skb
->len
<= 0)) {
3323 dev_kfree_skb_any(skb
);
3324 return NETDEV_TX_OK
;
3327 /* 82571 and newer doesn't need the workaround that limited descriptor
3329 if (adapter
->hw
.mac_type
>= e1000_82571
)
3332 mss
= skb_shinfo(skb
)->gso_size
;
3333 /* The controller does a simple calculation to
3334 * make sure there is enough room in the FIFO before
3335 * initiating the DMA for each buffer. The calc is:
3336 * 4 = ceil(buffer len/mss). To make sure we don't
3337 * overrun the FIFO, adjust the max buffer len if mss
3341 max_per_txd
= min(mss
<< 2, max_per_txd
);
3342 max_txd_pwr
= fls(max_per_txd
) - 1;
3344 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3345 * points to just header, pull a few bytes of payload from
3346 * frags into skb->data */
3347 hdr_len
= skb_transport_offset(skb
) + tcp_hdrlen(skb
);
3348 if (skb
->data_len
&& hdr_len
== len
) {
3349 switch (adapter
->hw
.mac_type
) {
3350 unsigned int pull_size
;
3352 /* Make sure we have room to chop off 4 bytes,
3353 * and that the end alignment will work out to
3354 * this hardware's requirements
3355 * NOTE: this is a TSO only workaround
3356 * if end byte alignment not correct move us
3357 * into the next dword */
3358 if ((unsigned long)(skb_tail_pointer(skb
) - 1) & 4)
3365 pull_size
= min((unsigned int)4, skb
->data_len
);
3366 if (!__pskb_pull_tail(skb
, pull_size
)) {
3368 "__pskb_pull_tail failed.\n");
3369 dev_kfree_skb_any(skb
);
3370 return NETDEV_TX_OK
;
3372 len
= skb
->len
- skb
->data_len
;
3381 /* reserve a descriptor for the offload context */
3382 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3386 /* Controller Erratum workaround */
3387 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3390 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3392 if (adapter
->pcix_82544
)
3395 /* work-around for errata 10 and it applies to all controllers
3396 * in PCI-X mode, so add one more descriptor to the count
3398 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3402 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3403 for (f
= 0; f
< nr_frags
; f
++)
3404 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3406 if (adapter
->pcix_82544
)
3410 if (adapter
->hw
.tx_pkt_filtering
&&
3411 (adapter
->hw
.mac_type
== e1000_82573
))
3412 e1000_transfer_dhcp_info(adapter
, skb
);
3414 if (!spin_trylock_irqsave(&tx_ring
->tx_lock
, flags
))
3415 /* Collision - tell upper layer to requeue */
3416 return NETDEV_TX_LOCKED
;
3418 /* need: count + 2 desc gap to keep tail from touching
3419 * head, otherwise try next time */
3420 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3421 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3422 return NETDEV_TX_BUSY
;
3425 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3426 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3427 netif_stop_queue(netdev
);
3428 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3429 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3430 return NETDEV_TX_BUSY
;
3434 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3435 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3436 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3439 first
= tx_ring
->next_to_use
;
3441 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3443 dev_kfree_skb_any(skb
);
3444 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3445 return NETDEV_TX_OK
;
3449 tx_ring
->last_tx_tso
= 1;
3450 tx_flags
|= E1000_TX_FLAGS_TSO
;
3451 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3452 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3454 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3455 * 82571 hardware supports TSO capabilities for IPv6 as well...
3456 * no longer assume, we must. */
3457 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3458 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3460 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3461 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3462 max_per_txd
, nr_frags
, mss
));
3464 netdev
->trans_start
= jiffies
;
3466 /* Make sure there is space in the ring for the next send. */
3467 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3469 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3470 return NETDEV_TX_OK
;
3474 * e1000_tx_timeout - Respond to a Tx Hang
3475 * @netdev: network interface device structure
3479 e1000_tx_timeout(struct net_device
*netdev
)
3481 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3483 /* Do the reset outside of interrupt context */
3484 adapter
->tx_timeout_count
++;
3485 schedule_work(&adapter
->reset_task
);
3489 e1000_reset_task(struct work_struct
*work
)
3491 struct e1000_adapter
*adapter
=
3492 container_of(work
, struct e1000_adapter
, reset_task
);
3494 e1000_reinit_locked(adapter
);
3498 * e1000_get_stats - Get System Network Statistics
3499 * @netdev: network interface device structure
3501 * Returns the address of the device statistics structure.
3502 * The statistics are actually updated from the timer callback.
3505 static struct net_device_stats
*
3506 e1000_get_stats(struct net_device
*netdev
)
3508 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3510 /* only return the current stats */
3511 return &adapter
->net_stats
;
3515 * e1000_change_mtu - Change the Maximum Transfer Unit
3516 * @netdev: network interface device structure
3517 * @new_mtu: new value for maximum frame size
3519 * Returns 0 on success, negative on failure
3523 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3525 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3526 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3527 u16 eeprom_data
= 0;
3529 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3530 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3531 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3535 /* Adapter-specific max frame size limits. */
3536 switch (adapter
->hw
.mac_type
) {
3537 case e1000_undefined
... e1000_82542_rev2_1
:
3539 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3540 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3545 /* Jumbo Frames not supported if:
3546 * - this is not an 82573L device
3547 * - ASPM is enabled in any way (0x1A bits 3:2) */
3548 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3550 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3551 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3552 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3554 "Jumbo Frames not supported.\n");
3559 /* ERT will be enabled later to enable wire speed receives */
3561 /* fall through to get support */
3564 case e1000_80003es2lan
:
3565 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3566 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3567 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3572 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3576 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3577 * means we reserve 2 more, this pushes us to allocate from the next
3579 * i.e. RXBUFFER_2048 --> size-4096 slab */
3581 if (max_frame
<= E1000_RXBUFFER_256
)
3582 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3583 else if (max_frame
<= E1000_RXBUFFER_512
)
3584 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3585 else if (max_frame
<= E1000_RXBUFFER_1024
)
3586 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3587 else if (max_frame
<= E1000_RXBUFFER_2048
)
3588 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3589 else if (max_frame
<= E1000_RXBUFFER_4096
)
3590 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3591 else if (max_frame
<= E1000_RXBUFFER_8192
)
3592 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3593 else if (max_frame
<= E1000_RXBUFFER_16384
)
3594 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3596 /* adjust allocation if LPE protects us, and we aren't using SBP */
3597 if (!adapter
->hw
.tbi_compatibility_on
&&
3598 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3599 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3600 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3602 netdev
->mtu
= new_mtu
;
3603 adapter
->hw
.max_frame_size
= max_frame
;
3605 if (netif_running(netdev
))
3606 e1000_reinit_locked(adapter
);
3612 * e1000_update_stats - Update the board statistics counters
3613 * @adapter: board private structure
3617 e1000_update_stats(struct e1000_adapter
*adapter
)
3619 struct e1000_hw
*hw
= &adapter
->hw
;
3620 struct pci_dev
*pdev
= adapter
->pdev
;
3621 unsigned long flags
;
3624 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3627 * Prevent stats update while adapter is being reset, or if the pci
3628 * connection is down.
3630 if (adapter
->link_speed
== 0)
3632 if (pci_channel_offline(pdev
))
3635 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3637 /* these counters are modified from e1000_tbi_adjust_stats,
3638 * called from the interrupt context, so they must only
3639 * be written while holding adapter->stats_lock
3642 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3643 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3644 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3645 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3646 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3647 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3648 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3650 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3651 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3652 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3653 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3654 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3655 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3656 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3659 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3660 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3661 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3662 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3663 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3664 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3665 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3666 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3667 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3668 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3669 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3670 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3671 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3672 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3673 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3674 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3675 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3676 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3677 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3678 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3679 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3680 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3681 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3682 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3683 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3684 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3686 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3687 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3688 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3689 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3690 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3691 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3692 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3695 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3696 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3698 /* used for adaptive IFS */
3700 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3701 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3702 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3703 adapter
->stats
.colc
+= hw
->collision_delta
;
3705 if (hw
->mac_type
>= e1000_82543
) {
3706 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3707 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3708 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3709 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3710 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3711 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3713 if (hw
->mac_type
> e1000_82547_rev_2
) {
3714 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3715 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3717 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3718 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3719 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3720 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3721 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3722 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3723 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3724 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3728 /* Fill out the OS statistics structure */
3729 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3730 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3734 /* RLEC on some newer hardware can be incorrect so build
3735 * our own version based on RUC and ROC */
3736 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3737 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3738 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3739 adapter
->stats
.cexterr
;
3740 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3741 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3742 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3743 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3744 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3747 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3748 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3749 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3750 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3751 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3752 if (adapter
->hw
.bad_tx_carr_stats_fd
&&
3753 adapter
->link_duplex
== FULL_DUPLEX
) {
3754 adapter
->net_stats
.tx_carrier_errors
= 0;
3755 adapter
->stats
.tncrs
= 0;
3758 /* Tx Dropped needs to be maintained elsewhere */
3761 if (hw
->media_type
== e1000_media_type_copper
) {
3762 if ((adapter
->link_speed
== SPEED_1000
) &&
3763 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3764 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3765 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3768 if ((hw
->mac_type
<= e1000_82546
) &&
3769 (hw
->phy_type
== e1000_phy_m88
) &&
3770 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3771 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3774 /* Management Stats */
3775 if (adapter
->hw
.has_smbus
) {
3776 adapter
->stats
.mgptc
+= E1000_READ_REG(hw
, MGTPTC
);
3777 adapter
->stats
.mgprc
+= E1000_READ_REG(hw
, MGTPRC
);
3778 adapter
->stats
.mgpdc
+= E1000_READ_REG(hw
, MGTPDC
);
3781 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3785 * e1000_intr_msi - Interrupt Handler
3786 * @irq: interrupt number
3787 * @data: pointer to a network interface device structure
3791 e1000_intr_msi(int irq
, void *data
)
3793 struct net_device
*netdev
= data
;
3794 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3795 struct e1000_hw
*hw
= &adapter
->hw
;
3796 #ifndef CONFIG_E1000_NAPI
3799 u32 icr
= E1000_READ_REG(hw
, ICR
);
3801 /* in NAPI mode read ICR disables interrupts using IAM */
3803 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3804 hw
->get_link_status
= 1;
3805 /* 80003ES2LAN workaround-- For packet buffer work-around on
3806 * link down event; disable receives here in the ISR and reset
3807 * adapter in watchdog */
3808 if (netif_carrier_ok(netdev
) &&
3809 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3810 /* disable receives */
3811 u32 rctl
= E1000_READ_REG(hw
, RCTL
);
3812 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3814 /* guard against interrupt when we're going down */
3815 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3816 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3819 #ifdef CONFIG_E1000_NAPI
3820 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3821 adapter
->total_tx_bytes
= 0;
3822 adapter
->total_tx_packets
= 0;
3823 adapter
->total_rx_bytes
= 0;
3824 adapter
->total_rx_packets
= 0;
3825 __netif_rx_schedule(netdev
, &adapter
->napi
);
3827 e1000_irq_enable(adapter
);
3829 adapter
->total_tx_bytes
= 0;
3830 adapter
->total_rx_bytes
= 0;
3831 adapter
->total_tx_packets
= 0;
3832 adapter
->total_rx_packets
= 0;
3834 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3835 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3836 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3839 if (likely(adapter
->itr_setting
& 3))
3840 e1000_set_itr(adapter
);
3847 * e1000_intr - Interrupt Handler
3848 * @irq: interrupt number
3849 * @data: pointer to a network interface device structure
3853 e1000_intr(int irq
, void *data
)
3855 struct net_device
*netdev
= data
;
3856 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3857 struct e1000_hw
*hw
= &adapter
->hw
;
3858 u32 rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3859 #ifndef CONFIG_E1000_NAPI
3863 return IRQ_NONE
; /* Not our interrupt */
3865 #ifdef CONFIG_E1000_NAPI
3866 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3867 * not set, then the adapter didn't send an interrupt */
3868 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3869 !(icr
& E1000_ICR_INT_ASSERTED
)))
3872 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3873 * need for the IMC write */
3876 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3877 hw
->get_link_status
= 1;
3878 /* 80003ES2LAN workaround--
3879 * For packet buffer work-around on link down event;
3880 * disable receives here in the ISR and
3881 * reset adapter in watchdog
3883 if (netif_carrier_ok(netdev
) &&
3884 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3885 /* disable receives */
3886 rctl
= E1000_READ_REG(hw
, RCTL
);
3887 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3889 /* guard against interrupt when we're going down */
3890 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3891 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3894 #ifdef CONFIG_E1000_NAPI
3895 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3896 /* disable interrupts, without the synchronize_irq bit */
3897 E1000_WRITE_REG(hw
, IMC
, ~0);
3898 E1000_WRITE_FLUSH(hw
);
3900 if (likely(netif_rx_schedule_prep(netdev
, &adapter
->napi
))) {
3901 adapter
->total_tx_bytes
= 0;
3902 adapter
->total_tx_packets
= 0;
3903 adapter
->total_rx_bytes
= 0;
3904 adapter
->total_rx_packets
= 0;
3905 __netif_rx_schedule(netdev
, &adapter
->napi
);
3907 /* this really should not happen! if it does it is basically a
3908 * bug, but not a hard error, so enable ints and continue */
3909 e1000_irq_enable(adapter
);
3911 /* Writing IMC and IMS is needed for 82547.
3912 * Due to Hub Link bus being occupied, an interrupt
3913 * de-assertion message is not able to be sent.
3914 * When an interrupt assertion message is generated later,
3915 * two messages are re-ordered and sent out.
3916 * That causes APIC to think 82547 is in de-assertion
3917 * state, while 82547 is in assertion state, resulting
3918 * in dead lock. Writing IMC forces 82547 into
3919 * de-assertion state.
3921 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3922 E1000_WRITE_REG(hw
, IMC
, ~0);
3924 adapter
->total_tx_bytes
= 0;
3925 adapter
->total_rx_bytes
= 0;
3926 adapter
->total_tx_packets
= 0;
3927 adapter
->total_rx_packets
= 0;
3929 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3930 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3931 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3934 if (likely(adapter
->itr_setting
& 3))
3935 e1000_set_itr(adapter
);
3937 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3938 e1000_irq_enable(adapter
);
3944 #ifdef CONFIG_E1000_NAPI
3946 * e1000_clean - NAPI Rx polling callback
3947 * @adapter: board private structure
3951 e1000_clean(struct napi_struct
*napi
, int budget
)
3953 struct e1000_adapter
*adapter
= container_of(napi
, struct e1000_adapter
, napi
);
3954 struct net_device
*poll_dev
= adapter
->netdev
;
3955 int tx_cleaned
= 0, work_done
= 0;
3957 /* Must NOT use netdev_priv macro here. */
3958 adapter
= poll_dev
->priv
;
3960 /* e1000_clean is called per-cpu. This lock protects
3961 * tx_ring[0] from being cleaned by multiple cpus
3962 * simultaneously. A failure obtaining the lock means
3963 * tx_ring[0] is currently being cleaned anyway. */
3964 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3965 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3966 &adapter
->tx_ring
[0]);
3967 spin_unlock(&adapter
->tx_queue_lock
);
3970 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3971 &work_done
, budget
);
3976 /* If budget not fully consumed, exit the polling mode */
3977 if (work_done
< budget
) {
3978 if (likely(adapter
->itr_setting
& 3))
3979 e1000_set_itr(adapter
);
3980 netif_rx_complete(poll_dev
, napi
);
3981 e1000_irq_enable(adapter
);
3989 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3990 * @adapter: board private structure
3994 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3995 struct e1000_tx_ring
*tx_ring
)
3997 struct net_device
*netdev
= adapter
->netdev
;
3998 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3999 struct e1000_buffer
*buffer_info
;
4000 unsigned int i
, eop
;
4001 #ifdef CONFIG_E1000_NAPI
4002 unsigned int count
= 0;
4004 bool cleaned
= false;
4005 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
4007 i
= tx_ring
->next_to_clean
;
4008 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4009 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
4011 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
4012 for (cleaned
= false; !cleaned
; ) {
4013 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4014 buffer_info
= &tx_ring
->buffer_info
[i
];
4015 cleaned
= (i
== eop
);
4018 struct sk_buff
*skb
= buffer_info
->skb
;
4019 unsigned int segs
, bytecount
;
4020 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
4021 /* multiply data chunks by size of headers */
4022 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
4024 total_tx_packets
+= segs
;
4025 total_tx_bytes
+= bytecount
;
4027 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
4028 tx_desc
->upper
.data
= 0;
4030 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
4033 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4034 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
4035 #ifdef CONFIG_E1000_NAPI
4036 #define E1000_TX_WEIGHT 64
4037 /* weight of a sort for tx, to avoid endless transmit cleanup */
4038 if (count
++ == E1000_TX_WEIGHT
) break;
4042 tx_ring
->next_to_clean
= i
;
4044 #define TX_WAKE_THRESHOLD 32
4045 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
4046 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
4047 /* Make sure that anybody stopping the queue after this
4048 * sees the new next_to_clean.
4051 if (netif_queue_stopped(netdev
)) {
4052 netif_wake_queue(netdev
);
4053 ++adapter
->restart_queue
;
4057 if (adapter
->detect_tx_hung
) {
4058 /* Detect a transmit hang in hardware, this serializes the
4059 * check with the clearing of time_stamp and movement of i */
4060 adapter
->detect_tx_hung
= false;
4061 if (tx_ring
->buffer_info
[eop
].dma
&&
4062 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
4063 (adapter
->tx_timeout_factor
* HZ
))
4064 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
4065 E1000_STATUS_TXOFF
)) {
4067 /* detected Tx unit hang */
4068 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
4072 " next_to_use <%x>\n"
4073 " next_to_clean <%x>\n"
4074 "buffer_info[next_to_clean]\n"
4075 " time_stamp <%lx>\n"
4076 " next_to_watch <%x>\n"
4078 " next_to_watch.status <%x>\n",
4079 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
4080 sizeof(struct e1000_tx_ring
)),
4081 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
4082 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
4083 tx_ring
->next_to_use
,
4084 tx_ring
->next_to_clean
,
4085 tx_ring
->buffer_info
[eop
].time_stamp
,
4088 eop_desc
->upper
.fields
.status
);
4089 netif_stop_queue(netdev
);
4092 adapter
->total_tx_bytes
+= total_tx_bytes
;
4093 adapter
->total_tx_packets
+= total_tx_packets
;
4094 adapter
->net_stats
.tx_bytes
+= total_tx_bytes
;
4095 adapter
->net_stats
.tx_packets
+= total_tx_packets
;
4100 * e1000_rx_checksum - Receive Checksum Offload for 82543
4101 * @adapter: board private structure
4102 * @status_err: receive descriptor status and error fields
4103 * @csum: receive descriptor csum field
4104 * @sk_buff: socket buffer with received data
4108 e1000_rx_checksum(struct e1000_adapter
*adapter
,
4109 u32 status_err
, u32 csum
,
4110 struct sk_buff
*skb
)
4112 u16 status
= (u16
)status_err
;
4113 u8 errors
= (u8
)(status_err
>> 24);
4114 skb
->ip_summed
= CHECKSUM_NONE
;
4116 /* 82543 or newer only */
4117 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
4118 /* Ignore Checksum bit is set */
4119 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
4120 /* TCP/UDP checksum error bit is set */
4121 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
4122 /* let the stack verify checksum errors */
4123 adapter
->hw_csum_err
++;
4126 /* TCP/UDP Checksum has not been calculated */
4127 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
4128 if (!(status
& E1000_RXD_STAT_TCPCS
))
4131 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
4134 /* It must be a TCP or UDP packet with a valid checksum */
4135 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
4136 /* TCP checksum is good */
4137 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
4138 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
4139 /* IP fragment with UDP payload */
4140 /* Hardware complements the payload checksum, so we undo it
4141 * and then put the value in host order for further stack use.
4143 __sum16 sum
= (__force __sum16
)htons(csum
);
4144 skb
->csum
= csum_unfold(~sum
);
4145 skb
->ip_summed
= CHECKSUM_COMPLETE
;
4147 adapter
->hw_csum_good
++;
4151 * e1000_clean_rx_irq - Send received data up the network stack; legacy
4152 * @adapter: board private structure
4156 #ifdef CONFIG_E1000_NAPI
4157 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4158 struct e1000_rx_ring
*rx_ring
,
4159 int *work_done
, int work_to_do
)
4161 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4162 struct e1000_rx_ring
*rx_ring
)
4165 struct net_device
*netdev
= adapter
->netdev
;
4166 struct pci_dev
*pdev
= adapter
->pdev
;
4167 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
4168 struct e1000_buffer
*buffer_info
, *next_buffer
;
4169 unsigned long flags
;
4173 int cleaned_count
= 0;
4174 bool cleaned
= false;
4175 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4177 i
= rx_ring
->next_to_clean
;
4178 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4179 buffer_info
= &rx_ring
->buffer_info
[i
];
4181 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4182 struct sk_buff
*skb
;
4185 #ifdef CONFIG_E1000_NAPI
4186 if (*work_done
>= work_to_do
)
4190 status
= rx_desc
->status
;
4191 skb
= buffer_info
->skb
;
4192 buffer_info
->skb
= NULL
;
4194 prefetch(skb
->data
- NET_IP_ALIGN
);
4196 if (++i
== rx_ring
->count
) i
= 0;
4197 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4200 next_buffer
= &rx_ring
->buffer_info
[i
];
4204 pci_unmap_single(pdev
,
4206 buffer_info
->length
,
4207 PCI_DMA_FROMDEVICE
);
4209 length
= le16_to_cpu(rx_desc
->length
);
4211 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4212 /* All receives must fit into a single buffer */
4213 E1000_DBG("%s: Receive packet consumed multiple"
4214 " buffers\n", netdev
->name
);
4216 buffer_info
->skb
= skb
;
4220 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4221 last_byte
= *(skb
->data
+ length
- 1);
4222 if (TBI_ACCEPT(&adapter
->hw
, status
,
4223 rx_desc
->errors
, length
, last_byte
)) {
4224 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4225 e1000_tbi_adjust_stats(&adapter
->hw
,
4228 spin_unlock_irqrestore(&adapter
->stats_lock
,
4233 buffer_info
->skb
= skb
;
4238 /* adjust length to remove Ethernet CRC, this must be
4239 * done after the TBI_ACCEPT workaround above */
4242 /* probably a little skewed due to removing CRC */
4243 total_rx_bytes
+= length
;
4246 /* code added for copybreak, this should improve
4247 * performance for small packets with large amounts
4248 * of reassembly being done in the stack */
4249 if (length
< copybreak
) {
4250 struct sk_buff
*new_skb
=
4251 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4253 skb_reserve(new_skb
, NET_IP_ALIGN
);
4254 skb_copy_to_linear_data_offset(new_skb
,
4260 /* save the skb in buffer_info as good */
4261 buffer_info
->skb
= skb
;
4264 /* else just continue with the old one */
4266 /* end copybreak code */
4267 skb_put(skb
, length
);
4269 /* Receive Checksum Offload */
4270 e1000_rx_checksum(adapter
,
4272 ((u32
)(rx_desc
->errors
) << 24),
4273 le16_to_cpu(rx_desc
->csum
), skb
);
4275 skb
->protocol
= eth_type_trans(skb
, netdev
);
4276 #ifdef CONFIG_E1000_NAPI
4277 if (unlikely(adapter
->vlgrp
&&
4278 (status
& E1000_RXD_STAT_VP
))) {
4279 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4280 le16_to_cpu(rx_desc
->special
));
4282 netif_receive_skb(skb
);
4284 #else /* CONFIG_E1000_NAPI */
4285 if (unlikely(adapter
->vlgrp
&&
4286 (status
& E1000_RXD_STAT_VP
))) {
4287 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4288 le16_to_cpu(rx_desc
->special
));
4292 #endif /* CONFIG_E1000_NAPI */
4293 netdev
->last_rx
= jiffies
;
4296 rx_desc
->status
= 0;
4298 /* return some buffers to hardware, one at a time is too slow */
4299 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4300 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4304 /* use prefetched values */
4306 buffer_info
= next_buffer
;
4308 rx_ring
->next_to_clean
= i
;
4310 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4312 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4314 adapter
->total_rx_packets
+= total_rx_packets
;
4315 adapter
->total_rx_bytes
+= total_rx_bytes
;
4316 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4317 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4322 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
4323 * @adapter: board private structure
4327 #ifdef CONFIG_E1000_NAPI
4328 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4329 struct e1000_rx_ring
*rx_ring
,
4330 int *work_done
, int work_to_do
)
4332 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4333 struct e1000_rx_ring
*rx_ring
)
4336 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
4337 struct net_device
*netdev
= adapter
->netdev
;
4338 struct pci_dev
*pdev
= adapter
->pdev
;
4339 struct e1000_buffer
*buffer_info
, *next_buffer
;
4340 struct e1000_ps_page
*ps_page
;
4341 struct e1000_ps_page_dma
*ps_page_dma
;
4342 struct sk_buff
*skb
;
4344 u32 length
, staterr
;
4345 int cleaned_count
= 0;
4346 bool cleaned
= false;
4347 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4349 i
= rx_ring
->next_to_clean
;
4350 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4351 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4352 buffer_info
= &rx_ring
->buffer_info
[i
];
4354 while (staterr
& E1000_RXD_STAT_DD
) {
4355 ps_page
= &rx_ring
->ps_page
[i
];
4356 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4357 #ifdef CONFIG_E1000_NAPI
4358 if (unlikely(*work_done
>= work_to_do
))
4362 skb
= buffer_info
->skb
;
4364 /* in the packet split case this is header only */
4365 prefetch(skb
->data
- NET_IP_ALIGN
);
4367 if (++i
== rx_ring
->count
) i
= 0;
4368 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
4371 next_buffer
= &rx_ring
->buffer_info
[i
];
4375 pci_unmap_single(pdev
, buffer_info
->dma
,
4376 buffer_info
->length
,
4377 PCI_DMA_FROMDEVICE
);
4379 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
4380 E1000_DBG("%s: Packet Split buffers didn't pick up"
4381 " the full packet\n", netdev
->name
);
4382 dev_kfree_skb_irq(skb
);
4386 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
4387 dev_kfree_skb_irq(skb
);
4391 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
4393 if (unlikely(!length
)) {
4394 E1000_DBG("%s: Last part of the packet spanning"
4395 " multiple descriptors\n", netdev
->name
);
4396 dev_kfree_skb_irq(skb
);
4401 skb_put(skb
, length
);
4404 /* this looks ugly, but it seems compiler issues make it
4405 more efficient than reusing j */
4406 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
4408 /* page alloc/put takes too long and effects small packet
4409 * throughput, so unsplit small packets and save the alloc/put*/
4410 if (l1
&& (l1
<= copybreak
) && ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
4412 /* there is no documentation about how to call
4413 * kmap_atomic, so we can't hold the mapping
4415 pci_dma_sync_single_for_cpu(pdev
,
4416 ps_page_dma
->ps_page_dma
[0],
4418 PCI_DMA_FROMDEVICE
);
4419 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
4420 KM_SKB_DATA_SOFTIRQ
);
4421 memcpy(skb_tail_pointer(skb
), vaddr
, l1
);
4422 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
4423 pci_dma_sync_single_for_device(pdev
,
4424 ps_page_dma
->ps_page_dma
[0],
4425 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4426 /* remove the CRC */
4433 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4434 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4436 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4437 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4438 ps_page_dma
->ps_page_dma
[j
] = 0;
4439 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4441 ps_page
->ps_page
[j
] = NULL
;
4443 skb
->data_len
+= length
;
4444 skb
->truesize
+= length
;
4447 /* strip the ethernet crc, problem is we're using pages now so
4448 * this whole operation can get a little cpu intensive */
4449 pskb_trim(skb
, skb
->len
- 4);
4452 total_rx_bytes
+= skb
->len
;
4455 e1000_rx_checksum(adapter
, staterr
,
4456 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4457 skb
->protocol
= eth_type_trans(skb
, netdev
);
4459 if (likely(rx_desc
->wb
.upper
.header_status
&
4460 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4461 adapter
->rx_hdr_split
++;
4462 #ifdef CONFIG_E1000_NAPI
4463 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4464 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4465 le16_to_cpu(rx_desc
->wb
.middle
.vlan
));
4467 netif_receive_skb(skb
);
4469 #else /* CONFIG_E1000_NAPI */
4470 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4471 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4472 le16_to_cpu(rx_desc
->wb
.middle
.vlan
));
4476 #endif /* CONFIG_E1000_NAPI */
4477 netdev
->last_rx
= jiffies
;
4480 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4481 buffer_info
->skb
= NULL
;
4483 /* return some buffers to hardware, one at a time is too slow */
4484 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4485 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4489 /* use prefetched values */
4491 buffer_info
= next_buffer
;
4493 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4495 rx_ring
->next_to_clean
= i
;
4497 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4499 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4501 adapter
->total_rx_packets
+= total_rx_packets
;
4502 adapter
->total_rx_bytes
+= total_rx_bytes
;
4503 adapter
->net_stats
.rx_bytes
+= total_rx_bytes
;
4504 adapter
->net_stats
.rx_packets
+= total_rx_packets
;
4509 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4510 * @adapter: address of board private structure
4514 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4515 struct e1000_rx_ring
*rx_ring
,
4518 struct net_device
*netdev
= adapter
->netdev
;
4519 struct pci_dev
*pdev
= adapter
->pdev
;
4520 struct e1000_rx_desc
*rx_desc
;
4521 struct e1000_buffer
*buffer_info
;
4522 struct sk_buff
*skb
;
4524 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4526 i
= rx_ring
->next_to_use
;
4527 buffer_info
= &rx_ring
->buffer_info
[i
];
4529 while (cleaned_count
--) {
4530 skb
= buffer_info
->skb
;
4536 skb
= netdev_alloc_skb(netdev
, bufsz
);
4537 if (unlikely(!skb
)) {
4538 /* Better luck next round */
4539 adapter
->alloc_rx_buff_failed
++;
4543 /* Fix for errata 23, can't cross 64kB boundary */
4544 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4545 struct sk_buff
*oldskb
= skb
;
4546 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4547 "at %p\n", bufsz
, skb
->data
);
4548 /* Try again, without freeing the previous */
4549 skb
= netdev_alloc_skb(netdev
, bufsz
);
4550 /* Failed allocation, critical failure */
4552 dev_kfree_skb(oldskb
);
4556 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4559 dev_kfree_skb(oldskb
);
4560 break; /* while !buffer_info->skb */
4563 /* Use new allocation */
4564 dev_kfree_skb(oldskb
);
4566 /* Make buffer alignment 2 beyond a 16 byte boundary
4567 * this will result in a 16 byte aligned IP header after
4568 * the 14 byte MAC header is removed
4570 skb_reserve(skb
, NET_IP_ALIGN
);
4572 buffer_info
->skb
= skb
;
4573 buffer_info
->length
= adapter
->rx_buffer_len
;
4575 buffer_info
->dma
= pci_map_single(pdev
,
4577 adapter
->rx_buffer_len
,
4578 PCI_DMA_FROMDEVICE
);
4580 /* Fix for errata 23, can't cross 64kB boundary */
4581 if (!e1000_check_64k_bound(adapter
,
4582 (void *)(unsigned long)buffer_info
->dma
,
4583 adapter
->rx_buffer_len
)) {
4584 DPRINTK(RX_ERR
, ERR
,
4585 "dma align check failed: %u bytes at %p\n",
4586 adapter
->rx_buffer_len
,
4587 (void *)(unsigned long)buffer_info
->dma
);
4589 buffer_info
->skb
= NULL
;
4591 pci_unmap_single(pdev
, buffer_info
->dma
,
4592 adapter
->rx_buffer_len
,
4593 PCI_DMA_FROMDEVICE
);
4595 break; /* while !buffer_info->skb */
4597 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4598 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4600 if (unlikely(++i
== rx_ring
->count
))
4602 buffer_info
= &rx_ring
->buffer_info
[i
];
4605 if (likely(rx_ring
->next_to_use
!= i
)) {
4606 rx_ring
->next_to_use
= i
;
4607 if (unlikely(i
-- == 0))
4608 i
= (rx_ring
->count
- 1);
4610 /* Force memory writes to complete before letting h/w
4611 * know there are new descriptors to fetch. (Only
4612 * applicable for weak-ordered memory model archs,
4613 * such as IA-64). */
4615 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4620 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4621 * @adapter: address of board private structure
4625 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4626 struct e1000_rx_ring
*rx_ring
,
4629 struct net_device
*netdev
= adapter
->netdev
;
4630 struct pci_dev
*pdev
= adapter
->pdev
;
4631 union e1000_rx_desc_packet_split
*rx_desc
;
4632 struct e1000_buffer
*buffer_info
;
4633 struct e1000_ps_page
*ps_page
;
4634 struct e1000_ps_page_dma
*ps_page_dma
;
4635 struct sk_buff
*skb
;
4638 i
= rx_ring
->next_to_use
;
4639 buffer_info
= &rx_ring
->buffer_info
[i
];
4640 ps_page
= &rx_ring
->ps_page
[i
];
4641 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4643 while (cleaned_count
--) {
4644 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4646 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4647 if (j
< adapter
->rx_ps_pages
) {
4648 if (likely(!ps_page
->ps_page
[j
])) {
4649 ps_page
->ps_page
[j
] =
4650 alloc_page(GFP_ATOMIC
);
4651 if (unlikely(!ps_page
->ps_page
[j
])) {
4652 adapter
->alloc_rx_buff_failed
++;
4655 ps_page_dma
->ps_page_dma
[j
] =
4657 ps_page
->ps_page
[j
],
4659 PCI_DMA_FROMDEVICE
);
4661 /* Refresh the desc even if buffer_addrs didn't
4662 * change because each write-back erases
4665 rx_desc
->read
.buffer_addr
[j
+1] =
4666 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4668 rx_desc
->read
.buffer_addr
[j
+1] = ~cpu_to_le64(0);
4671 skb
= netdev_alloc_skb(netdev
,
4672 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4674 if (unlikely(!skb
)) {
4675 adapter
->alloc_rx_buff_failed
++;
4679 /* Make buffer alignment 2 beyond a 16 byte boundary
4680 * this will result in a 16 byte aligned IP header after
4681 * the 14 byte MAC header is removed
4683 skb_reserve(skb
, NET_IP_ALIGN
);
4685 buffer_info
->skb
= skb
;
4686 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4687 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4688 adapter
->rx_ps_bsize0
,
4689 PCI_DMA_FROMDEVICE
);
4691 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4693 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4694 buffer_info
= &rx_ring
->buffer_info
[i
];
4695 ps_page
= &rx_ring
->ps_page
[i
];
4696 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4700 if (likely(rx_ring
->next_to_use
!= i
)) {
4701 rx_ring
->next_to_use
= i
;
4702 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4704 /* Force memory writes to complete before letting h/w
4705 * know there are new descriptors to fetch. (Only
4706 * applicable for weak-ordered memory model archs,
4707 * such as IA-64). */
4709 /* Hardware increments by 16 bytes, but packet split
4710 * descriptors are 32 bytes...so we increment tail
4713 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4718 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4723 e1000_smartspeed(struct e1000_adapter
*adapter
)
4728 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4729 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4732 if (adapter
->smartspeed
== 0) {
4733 /* If Master/Slave config fault is asserted twice,
4734 * we assume back-to-back */
4735 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4736 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4737 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4738 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4739 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4740 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4741 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4742 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4744 adapter
->smartspeed
++;
4745 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4746 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4748 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4749 MII_CR_RESTART_AUTO_NEG
);
4750 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4755 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4756 /* If still no link, perhaps using 2/3 pair cable */
4757 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4758 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4759 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4760 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4761 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4762 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4763 MII_CR_RESTART_AUTO_NEG
);
4764 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4767 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4768 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4769 adapter
->smartspeed
= 0;
4780 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4786 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4800 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4802 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4803 struct mii_ioctl_data
*data
= if_mii(ifr
);
4807 unsigned long flags
;
4809 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4814 data
->phy_id
= adapter
->hw
.phy_addr
;
4817 if (!capable(CAP_NET_ADMIN
))
4819 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4820 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4822 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4825 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4828 if (!capable(CAP_NET_ADMIN
))
4830 if (data
->reg_num
& ~(0x1F))
4832 mii_reg
= data
->val_in
;
4833 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4834 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4836 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4839 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4840 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4841 switch (data
->reg_num
) {
4843 if (mii_reg
& MII_CR_POWER_DOWN
)
4845 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4846 adapter
->hw
.autoneg
= 1;
4847 adapter
->hw
.autoneg_advertised
= 0x2F;
4850 spddplx
= SPEED_1000
;
4851 else if (mii_reg
& 0x2000)
4852 spddplx
= SPEED_100
;
4855 spddplx
+= (mii_reg
& 0x100)
4858 retval
= e1000_set_spd_dplx(adapter
,
4863 if (netif_running(adapter
->netdev
))
4864 e1000_reinit_locked(adapter
);
4866 e1000_reset(adapter
);
4868 case M88E1000_PHY_SPEC_CTRL
:
4869 case M88E1000_EXT_PHY_SPEC_CTRL
:
4870 if (e1000_phy_reset(&adapter
->hw
))
4875 switch (data
->reg_num
) {
4877 if (mii_reg
& MII_CR_POWER_DOWN
)
4879 if (netif_running(adapter
->netdev
))
4880 e1000_reinit_locked(adapter
);
4882 e1000_reset(adapter
);
4890 return E1000_SUCCESS
;
4894 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4896 struct e1000_adapter
*adapter
= hw
->back
;
4897 int ret_val
= pci_set_mwi(adapter
->pdev
);
4900 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4904 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4906 struct e1000_adapter
*adapter
= hw
->back
;
4908 pci_clear_mwi(adapter
->pdev
);
4912 e1000_pcix_get_mmrbc(struct e1000_hw
*hw
)
4914 struct e1000_adapter
*adapter
= hw
->back
;
4915 return pcix_get_mmrbc(adapter
->pdev
);
4919 e1000_pcix_set_mmrbc(struct e1000_hw
*hw
, int mmrbc
)
4921 struct e1000_adapter
*adapter
= hw
->back
;
4922 pcix_set_mmrbc(adapter
->pdev
, mmrbc
);
4926 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, u32 reg
, u16
*value
)
4928 struct e1000_adapter
*adapter
= hw
->back
;
4931 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4933 return -E1000_ERR_CONFIG
;
4935 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4937 return E1000_SUCCESS
;
4941 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, u32 value
)
4947 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4949 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4952 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4953 e1000_irq_disable(adapter
);
4954 adapter
->vlgrp
= grp
;
4957 /* enable VLAN tag insert/strip */
4958 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4959 ctrl
|= E1000_CTRL_VME
;
4960 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4962 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4963 /* enable VLAN receive filtering */
4964 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4965 rctl
|= E1000_RCTL_VFE
;
4966 rctl
&= ~E1000_RCTL_CFIEN
;
4967 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4968 e1000_update_mng_vlan(adapter
);
4971 /* disable VLAN tag insert/strip */
4972 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4973 ctrl
&= ~E1000_CTRL_VME
;
4974 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4976 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4977 /* disable VLAN filtering */
4978 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4979 rctl
&= ~E1000_RCTL_VFE
;
4980 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4981 if (adapter
->mng_vlan_id
!=
4982 (u16
)E1000_MNG_VLAN_NONE
) {
4983 e1000_vlan_rx_kill_vid(netdev
,
4984 adapter
->mng_vlan_id
);
4985 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4990 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
4991 e1000_irq_enable(adapter
);
4995 e1000_vlan_rx_add_vid(struct net_device
*netdev
, u16 vid
)
4997 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5000 if ((adapter
->hw
.mng_cookie
.status
&
5001 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
5002 (vid
== adapter
->mng_vlan_id
))
5004 /* add VID to filter table */
5005 index
= (vid
>> 5) & 0x7F;
5006 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
5007 vfta
|= (1 << (vid
& 0x1F));
5008 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
5012 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, u16 vid
)
5014 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5017 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
5018 e1000_irq_disable(adapter
);
5019 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
5020 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
5021 e1000_irq_enable(adapter
);
5023 if ((adapter
->hw
.mng_cookie
.status
&
5024 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
5025 (vid
== adapter
->mng_vlan_id
)) {
5026 /* release control to f/w */
5027 e1000_release_hw_control(adapter
);
5031 /* remove VID from filter table */
5032 index
= (vid
>> 5) & 0x7F;
5033 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
5034 vfta
&= ~(1 << (vid
& 0x1F));
5035 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
5039 e1000_restore_vlan(struct e1000_adapter
*adapter
)
5041 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
5043 if (adapter
->vlgrp
) {
5045 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
5046 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
5048 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
5054 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, u16 spddplx
)
5056 adapter
->hw
.autoneg
= 0;
5058 /* Fiber NICs only allow 1000 gbps Full duplex */
5059 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
5060 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
5061 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
5066 case SPEED_10
+ DUPLEX_HALF
:
5067 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
5069 case SPEED_10
+ DUPLEX_FULL
:
5070 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
5072 case SPEED_100
+ DUPLEX_HALF
:
5073 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
5075 case SPEED_100
+ DUPLEX_FULL
:
5076 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
5078 case SPEED_1000
+ DUPLEX_FULL
:
5079 adapter
->hw
.autoneg
= 1;
5080 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
5082 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
5084 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
5091 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
5093 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5094 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5095 u32 ctrl
, ctrl_ext
, rctl
, status
;
5096 u32 wufc
= adapter
->wol
;
5101 netif_device_detach(netdev
);
5103 if (netif_running(netdev
)) {
5104 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
5105 e1000_down(adapter
);
5109 retval
= pci_save_state(pdev
);
5114 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
5115 if (status
& E1000_STATUS_LU
)
5116 wufc
&= ~E1000_WUFC_LNKC
;
5119 e1000_setup_rctl(adapter
);
5120 e1000_set_rx_mode(netdev
);
5122 /* turn on all-multi mode if wake on multicast is enabled */
5123 if (wufc
& E1000_WUFC_MC
) {
5124 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
5125 rctl
|= E1000_RCTL_MPE
;
5126 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
5129 if (adapter
->hw
.mac_type
>= e1000_82540
) {
5130 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
5131 /* advertise wake from D3Cold */
5132 #define E1000_CTRL_ADVD3WUC 0x00100000
5133 /* phy power management enable */
5134 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5135 ctrl
|= E1000_CTRL_ADVD3WUC
|
5136 E1000_CTRL_EN_PHY_PWR_MGMT
;
5137 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
5140 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
5141 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
5142 /* keep the laser running in D3 */
5143 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
5144 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
5145 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
5148 /* Allow time for pending master requests to run */
5149 e1000_disable_pciex_master(&adapter
->hw
);
5151 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
5152 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
5153 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5154 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5156 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
5157 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
5158 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5159 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5162 e1000_release_manageability(adapter
);
5164 /* make sure adapter isn't asleep if manageability is enabled */
5165 if (adapter
->en_mng_pt
) {
5166 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5167 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5170 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
5171 e1000_phy_powerdown_workaround(&adapter
->hw
);
5173 if (netif_running(netdev
))
5174 e1000_free_irq(adapter
);
5176 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5177 * would have already happened in close and is redundant. */
5178 e1000_release_hw_control(adapter
);
5180 pci_disable_device(pdev
);
5182 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
5189 e1000_resume(struct pci_dev
*pdev
)
5191 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5192 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5195 pci_set_power_state(pdev
, PCI_D0
);
5196 pci_restore_state(pdev
);
5197 if ((err
= pci_enable_device(pdev
))) {
5198 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
5201 pci_set_master(pdev
);
5203 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5204 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5206 if (netif_running(netdev
) && (err
= e1000_request_irq(adapter
)))
5209 e1000_power_up_phy(adapter
);
5210 e1000_reset(adapter
);
5211 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5213 e1000_init_manageability(adapter
);
5215 if (netif_running(netdev
))
5218 netif_device_attach(netdev
);
5220 /* If the controller is 82573 and f/w is AMT, do not set
5221 * DRV_LOAD until the interface is up. For all other cases,
5222 * let the f/w know that the h/w is now under the control
5224 if (adapter
->hw
.mac_type
!= e1000_82573
||
5225 !e1000_check_mng_mode(&adapter
->hw
))
5226 e1000_get_hw_control(adapter
);
5232 static void e1000_shutdown(struct pci_dev
*pdev
)
5234 e1000_suspend(pdev
, PMSG_SUSPEND
);
5237 #ifdef CONFIG_NET_POLL_CONTROLLER
5239 * Polling 'interrupt' - used by things like netconsole to send skbs
5240 * without having to re-enable interrupts. It's not called while
5241 * the interrupt routine is executing.
5244 e1000_netpoll(struct net_device
*netdev
)
5246 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5248 disable_irq(adapter
->pdev
->irq
);
5249 e1000_intr(adapter
->pdev
->irq
, netdev
);
5250 #ifndef CONFIG_E1000_NAPI
5251 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
5253 enable_irq(adapter
->pdev
->irq
);
5258 * e1000_io_error_detected - called when PCI error is detected
5259 * @pdev: Pointer to PCI device
5260 * @state: The current pci conneection state
5262 * This function is called after a PCI bus error affecting
5263 * this device has been detected.
5265 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
5267 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5268 struct e1000_adapter
*adapter
= netdev
->priv
;
5270 netif_device_detach(netdev
);
5272 if (netif_running(netdev
))
5273 e1000_down(adapter
);
5274 pci_disable_device(pdev
);
5276 /* Request a slot slot reset. */
5277 return PCI_ERS_RESULT_NEED_RESET
;
5281 * e1000_io_slot_reset - called after the pci bus has been reset.
5282 * @pdev: Pointer to PCI device
5284 * Restart the card from scratch, as if from a cold-boot. Implementation
5285 * resembles the first-half of the e1000_resume routine.
5287 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5289 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5290 struct e1000_adapter
*adapter
= netdev
->priv
;
5292 if (pci_enable_device(pdev
)) {
5293 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
5294 return PCI_ERS_RESULT_DISCONNECT
;
5296 pci_set_master(pdev
);
5298 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5299 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5301 e1000_reset(adapter
);
5302 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5304 return PCI_ERS_RESULT_RECOVERED
;
5308 * e1000_io_resume - called when traffic can start flowing again.
5309 * @pdev: Pointer to PCI device
5311 * This callback is called when the error recovery driver tells us that
5312 * its OK to resume normal operation. Implementation resembles the
5313 * second-half of the e1000_resume routine.
5315 static void e1000_io_resume(struct pci_dev
*pdev
)
5317 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5318 struct e1000_adapter
*adapter
= netdev
->priv
;
5320 e1000_init_manageability(adapter
);
5322 if (netif_running(netdev
)) {
5323 if (e1000_up(adapter
)) {
5324 printk("e1000: can't bring device back up after reset\n");
5329 netif_device_attach(netdev
);
5331 /* If the controller is 82573 and f/w is AMT, do not set
5332 * DRV_LOAD until the interface is up. For all other cases,
5333 * let the f/w know that the h/w is now under the control
5335 if (adapter
->hw
.mac_type
!= e1000_82573
||
5336 !e1000_check_mng_mode(&adapter
->hw
))
5337 e1000_get_hw_control(adapter
);