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 char e1000_driver_version
[] = DRV_VERSION
;
41 static 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(0x1049),
77 INTEL_E1000_ETHERNET_DEVICE(0x104A),
78 INTEL_E1000_ETHERNET_DEVICE(0x104B),
79 INTEL_E1000_ETHERNET_DEVICE(0x104C),
80 INTEL_E1000_ETHERNET_DEVICE(0x104D),
81 INTEL_E1000_ETHERNET_DEVICE(0x105E),
82 INTEL_E1000_ETHERNET_DEVICE(0x105F),
83 INTEL_E1000_ETHERNET_DEVICE(0x1060),
84 INTEL_E1000_ETHERNET_DEVICE(0x1075),
85 INTEL_E1000_ETHERNET_DEVICE(0x1076),
86 INTEL_E1000_ETHERNET_DEVICE(0x1077),
87 INTEL_E1000_ETHERNET_DEVICE(0x1078),
88 INTEL_E1000_ETHERNET_DEVICE(0x1079),
89 INTEL_E1000_ETHERNET_DEVICE(0x107A),
90 INTEL_E1000_ETHERNET_DEVICE(0x107B),
91 INTEL_E1000_ETHERNET_DEVICE(0x107C),
92 INTEL_E1000_ETHERNET_DEVICE(0x107D),
93 INTEL_E1000_ETHERNET_DEVICE(0x107E),
94 INTEL_E1000_ETHERNET_DEVICE(0x107F),
95 INTEL_E1000_ETHERNET_DEVICE(0x108A),
96 INTEL_E1000_ETHERNET_DEVICE(0x108B),
97 INTEL_E1000_ETHERNET_DEVICE(0x108C),
98 INTEL_E1000_ETHERNET_DEVICE(0x1096),
99 INTEL_E1000_ETHERNET_DEVICE(0x1098),
100 INTEL_E1000_ETHERNET_DEVICE(0x1099),
101 INTEL_E1000_ETHERNET_DEVICE(0x109A),
102 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
104 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
106 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
107 INTEL_E1000_ETHERNET_DEVICE(0x10BC),
108 INTEL_E1000_ETHERNET_DEVICE(0x10C4),
109 INTEL_E1000_ETHERNET_DEVICE(0x10C5),
110 /* required last entry */
114 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
116 int e1000_up(struct e1000_adapter
*adapter
);
117 void e1000_down(struct e1000_adapter
*adapter
);
118 void e1000_reinit_locked(struct e1000_adapter
*adapter
);
119 void e1000_reset(struct e1000_adapter
*adapter
);
120 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
121 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
122 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
123 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
124 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
125 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
126 struct e1000_tx_ring
*txdr
);
127 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
128 struct e1000_rx_ring
*rxdr
);
129 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
130 struct e1000_tx_ring
*tx_ring
);
131 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
132 struct e1000_rx_ring
*rx_ring
);
133 void e1000_update_stats(struct e1000_adapter
*adapter
);
135 static int e1000_init_module(void);
136 static void e1000_exit_module(void);
137 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
138 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
139 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
140 static int e1000_sw_init(struct e1000_adapter
*adapter
);
141 static int e1000_open(struct net_device
*netdev
);
142 static int e1000_close(struct net_device
*netdev
);
143 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
144 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
145 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
146 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
147 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
148 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
149 struct e1000_tx_ring
*tx_ring
);
150 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
151 struct e1000_rx_ring
*rx_ring
);
152 static void e1000_set_multi(struct net_device
*netdev
);
153 static void e1000_update_phy_info(unsigned long data
);
154 static void e1000_watchdog(unsigned long data
);
155 static void e1000_82547_tx_fifo_stall(unsigned long data
);
156 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
157 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
158 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
159 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
160 static irqreturn_t
e1000_intr(int irq
, void *data
);
161 #ifdef CONFIG_PCI_MSI
162 static irqreturn_t
e1000_intr_msi(int irq
, void *data
);
164 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
165 struct e1000_tx_ring
*tx_ring
);
166 #ifdef CONFIG_E1000_NAPI
167 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
168 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
,
170 int *work_done
, int work_to_do
);
171 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
172 struct e1000_rx_ring
*rx_ring
,
173 int *work_done
, int work_to_do
);
175 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
176 struct e1000_rx_ring
*rx_ring
);
177 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
178 struct e1000_rx_ring
*rx_ring
);
180 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
181 struct e1000_rx_ring
*rx_ring
,
183 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
184 struct e1000_rx_ring
*rx_ring
,
186 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
187 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
189 void e1000_set_ethtool_ops(struct net_device
*netdev
);
190 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
191 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
192 static void e1000_tx_timeout(struct net_device
*dev
);
193 static void e1000_reset_task(struct work_struct
*work
);
194 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
195 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
196 struct sk_buff
*skb
);
198 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
199 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
200 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
201 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
203 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
205 static int e1000_resume(struct pci_dev
*pdev
);
207 static void e1000_shutdown(struct pci_dev
*pdev
);
209 #ifdef CONFIG_NET_POLL_CONTROLLER
210 /* for netdump / net console */
211 static void e1000_netpoll (struct net_device
*netdev
);
214 extern void e1000_check_options(struct e1000_adapter
*adapter
);
216 #define COPYBREAK_DEFAULT 256
217 static unsigned int copybreak __read_mostly
= COPYBREAK_DEFAULT
;
218 module_param(copybreak
, uint
, 0644);
219 MODULE_PARM_DESC(copybreak
,
220 "Maximum size of packet that is copied to a new buffer on receive");
222 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
223 pci_channel_state_t state
);
224 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
225 static void e1000_io_resume(struct pci_dev
*pdev
);
227 static struct pci_error_handlers e1000_err_handler
= {
228 .error_detected
= e1000_io_error_detected
,
229 .slot_reset
= e1000_io_slot_reset
,
230 .resume
= e1000_io_resume
,
233 static struct pci_driver e1000_driver
= {
234 .name
= e1000_driver_name
,
235 .id_table
= e1000_pci_tbl
,
236 .probe
= e1000_probe
,
237 .remove
= __devexit_p(e1000_remove
),
239 /* Power Managment Hooks */
240 .suspend
= e1000_suspend
,
241 .resume
= e1000_resume
,
243 .shutdown
= e1000_shutdown
,
244 .err_handler
= &e1000_err_handler
247 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
248 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
249 MODULE_LICENSE("GPL");
250 MODULE_VERSION(DRV_VERSION
);
252 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
253 module_param(debug
, int, 0);
254 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
257 * e1000_init_module - Driver Registration Routine
259 * e1000_init_module is the first routine called when the driver is
260 * loaded. All it does is register with the PCI subsystem.
264 e1000_init_module(void)
267 printk(KERN_INFO
"%s - version %s\n",
268 e1000_driver_string
, e1000_driver_version
);
270 printk(KERN_INFO
"%s\n", e1000_copyright
);
272 ret
= pci_register_driver(&e1000_driver
);
273 if (copybreak
!= COPYBREAK_DEFAULT
) {
275 printk(KERN_INFO
"e1000: copybreak disabled\n");
277 printk(KERN_INFO
"e1000: copybreak enabled for "
278 "packets <= %u bytes\n", copybreak
);
283 module_init(e1000_init_module
);
286 * e1000_exit_module - Driver Exit Cleanup Routine
288 * e1000_exit_module is called just before the driver is removed
293 e1000_exit_module(void)
295 pci_unregister_driver(&e1000_driver
);
298 module_exit(e1000_exit_module
);
300 static int e1000_request_irq(struct e1000_adapter
*adapter
)
302 struct net_device
*netdev
= adapter
->netdev
;
306 #ifdef CONFIG_PCI_MSI
307 if (adapter
->hw
.mac_type
>= e1000_82571
) {
308 adapter
->have_msi
= TRUE
;
309 if ((err
= pci_enable_msi(adapter
->pdev
))) {
311 "Unable to allocate MSI interrupt Error: %d\n", err
);
312 adapter
->have_msi
= FALSE
;
315 if (adapter
->have_msi
) {
316 flags
&= ~IRQF_SHARED
;
317 err
= request_irq(adapter
->pdev
->irq
, &e1000_intr_msi
, flags
,
318 netdev
->name
, netdev
);
321 "Unable to allocate interrupt Error: %d\n", err
);
324 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
325 netdev
->name
, netdev
)))
327 "Unable to allocate interrupt Error: %d\n", err
);
332 static void e1000_free_irq(struct e1000_adapter
*adapter
)
334 struct net_device
*netdev
= adapter
->netdev
;
336 free_irq(adapter
->pdev
->irq
, netdev
);
338 #ifdef CONFIG_PCI_MSI
339 if (adapter
->have_msi
)
340 pci_disable_msi(adapter
->pdev
);
345 * e1000_irq_disable - Mask off interrupt generation on the NIC
346 * @adapter: board private structure
350 e1000_irq_disable(struct e1000_adapter
*adapter
)
352 atomic_inc(&adapter
->irq_sem
);
353 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
354 E1000_WRITE_FLUSH(&adapter
->hw
);
355 synchronize_irq(adapter
->pdev
->irq
);
359 * e1000_irq_enable - Enable default interrupt generation settings
360 * @adapter: board private structure
364 e1000_irq_enable(struct e1000_adapter
*adapter
)
366 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
367 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
368 E1000_WRITE_FLUSH(&adapter
->hw
);
373 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
375 struct net_device
*netdev
= adapter
->netdev
;
376 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
377 uint16_t old_vid
= adapter
->mng_vlan_id
;
378 if (adapter
->vlgrp
) {
379 if (!vlan_group_get_device(adapter
->vlgrp
, vid
)) {
380 if (adapter
->hw
.mng_cookie
.status
&
381 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
382 e1000_vlan_rx_add_vid(netdev
, vid
);
383 adapter
->mng_vlan_id
= vid
;
385 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
387 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
389 !vlan_group_get_device(adapter
->vlgrp
, old_vid
))
390 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
392 adapter
->mng_vlan_id
= vid
;
397 * e1000_release_hw_control - release control of the h/w to f/w
398 * @adapter: address of board private structure
400 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
401 * For ASF and Pass Through versions of f/w this means that the
402 * driver is no longer loaded. For AMT version (only with 82573) i
403 * of the f/w this means that the network i/f is closed.
408 e1000_release_hw_control(struct e1000_adapter
*adapter
)
413 /* Let firmware taken over control of h/w */
414 switch (adapter
->hw
.mac_type
) {
416 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
417 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
418 swsm
& ~E1000_SWSM_DRV_LOAD
);
422 case e1000_80003es2lan
:
424 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
425 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
426 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
434 * e1000_get_hw_control - get control of the h/w from f/w
435 * @adapter: address of board private structure
437 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
438 * For ASF and Pass Through versions of f/w this means that
439 * the driver is loaded. For AMT version (only with 82573)
440 * of the f/w this means that the network i/f is open.
445 e1000_get_hw_control(struct e1000_adapter
*adapter
)
450 /* Let firmware know the driver has taken over */
451 switch (adapter
->hw
.mac_type
) {
453 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
454 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
455 swsm
| E1000_SWSM_DRV_LOAD
);
459 case e1000_80003es2lan
:
461 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
462 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
463 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
471 e1000_init_manageability(struct e1000_adapter
*adapter
)
473 if (adapter
->en_mng_pt
) {
474 uint32_t manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
476 /* disable hardware interception of ARP */
477 manc
&= ~(E1000_MANC_ARP_EN
);
479 /* enable receiving management packets to the host */
480 /* this will probably generate destination unreachable messages
481 * from the host OS, but the packets will be handled on SMBUS */
482 if (adapter
->hw
.has_manc2h
) {
483 uint32_t manc2h
= E1000_READ_REG(&adapter
->hw
, MANC2H
);
485 manc
|= E1000_MANC_EN_MNG2HOST
;
486 #define E1000_MNG2HOST_PORT_623 (1 << 5)
487 #define E1000_MNG2HOST_PORT_664 (1 << 6)
488 manc2h
|= E1000_MNG2HOST_PORT_623
;
489 manc2h
|= E1000_MNG2HOST_PORT_664
;
490 E1000_WRITE_REG(&adapter
->hw
, MANC2H
, manc2h
);
493 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
498 e1000_release_manageability(struct e1000_adapter
*adapter
)
500 if (adapter
->en_mng_pt
) {
501 uint32_t manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
503 /* re-enable hardware interception of ARP */
504 manc
|= E1000_MANC_ARP_EN
;
506 if (adapter
->hw
.has_manc2h
)
507 manc
&= ~E1000_MANC_EN_MNG2HOST
;
509 /* don't explicitly have to mess with MANC2H since
510 * MANC has an enable disable that gates MANC2H */
512 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
517 * e1000_configure - configure the hardware for RX and TX
518 * @adapter = private board structure
520 static void e1000_configure(struct e1000_adapter
*adapter
)
522 struct net_device
*netdev
= adapter
->netdev
;
525 e1000_set_multi(netdev
);
527 e1000_restore_vlan(adapter
);
528 e1000_init_manageability(adapter
);
530 e1000_configure_tx(adapter
);
531 e1000_setup_rctl(adapter
);
532 e1000_configure_rx(adapter
);
533 /* call E1000_DESC_UNUSED which always leaves
534 * at least 1 descriptor unused to make sure
535 * next_to_use != next_to_clean */
536 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
537 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
538 adapter
->alloc_rx_buf(adapter
, ring
,
539 E1000_DESC_UNUSED(ring
));
542 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
545 int e1000_up(struct e1000_adapter
*adapter
)
547 /* hardware has been reset, we need to reload some things */
548 e1000_configure(adapter
);
550 clear_bit(__E1000_DOWN
, &adapter
->flags
);
552 #ifdef CONFIG_E1000_NAPI
553 netif_poll_enable(adapter
->netdev
);
555 e1000_irq_enable(adapter
);
557 /* fire a link change interrupt to start the watchdog */
558 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_LSC
);
563 * e1000_power_up_phy - restore link in case the phy was powered down
564 * @adapter: address of board private structure
566 * The phy may be powered down to save power and turn off link when the
567 * driver is unloaded and wake on lan is not enabled (among others)
568 * *** this routine MUST be followed by a call to e1000_reset ***
572 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
574 uint16_t mii_reg
= 0;
576 /* Just clear the power down bit to wake the phy back up */
577 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
578 /* according to the manual, the phy will retain its
579 * settings across a power-down/up cycle */
580 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
581 mii_reg
&= ~MII_CR_POWER_DOWN
;
582 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
586 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
588 /* Power down the PHY so no link is implied when interface is down *
589 * The PHY cannot be powered down if any of the following is TRUE *
592 * (c) SoL/IDER session is active */
593 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
594 adapter
->hw
.media_type
== e1000_media_type_copper
) {
595 uint16_t mii_reg
= 0;
597 switch (adapter
->hw
.mac_type
) {
600 case e1000_82545_rev_3
:
602 case e1000_82546_rev_3
:
604 case e1000_82541_rev_2
:
606 case e1000_82547_rev_2
:
607 if (E1000_READ_REG(&adapter
->hw
, MANC
) &
614 case e1000_80003es2lan
:
616 if (e1000_check_mng_mode(&adapter
->hw
) ||
617 e1000_check_phy_reset_block(&adapter
->hw
))
623 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
624 mii_reg
|= MII_CR_POWER_DOWN
;
625 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
633 e1000_down(struct e1000_adapter
*adapter
)
635 struct net_device
*netdev
= adapter
->netdev
;
637 /* signal that we're down so the interrupt handler does not
638 * reschedule our watchdog timer */
639 set_bit(__E1000_DOWN
, &adapter
->flags
);
641 #ifdef CONFIG_E1000_NAPI
642 netif_poll_disable(netdev
);
644 e1000_irq_disable(adapter
);
646 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
647 del_timer_sync(&adapter
->watchdog_timer
);
648 del_timer_sync(&adapter
->phy_info_timer
);
650 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
651 adapter
->link_speed
= 0;
652 adapter
->link_duplex
= 0;
653 netif_carrier_off(netdev
);
654 netif_stop_queue(netdev
);
656 e1000_reset(adapter
);
657 e1000_clean_all_tx_rings(adapter
);
658 e1000_clean_all_rx_rings(adapter
);
662 e1000_reinit_locked(struct e1000_adapter
*adapter
)
664 WARN_ON(in_interrupt());
665 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
669 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
673 e1000_reset(struct e1000_adapter
*adapter
)
675 uint32_t pba
= 0, tx_space
, min_tx_space
, min_rx_space
;
676 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
677 boolean_t legacy_pba_adjust
= FALSE
;
679 /* Repartition Pba for greater than 9k mtu
680 * To take effect CTRL.RST is required.
683 switch (adapter
->hw
.mac_type
) {
684 case e1000_82542_rev2_0
:
685 case e1000_82542_rev2_1
:
690 case e1000_82541_rev_2
:
691 legacy_pba_adjust
= TRUE
;
695 case e1000_82545_rev_3
:
697 case e1000_82546_rev_3
:
701 case e1000_82547_rev_2
:
702 legacy_pba_adjust
= TRUE
;
707 case e1000_80003es2lan
:
715 case e1000_undefined
:
720 if (legacy_pba_adjust
== TRUE
) {
721 if (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
)
722 pba
-= 8; /* allocate more FIFO for Tx */
724 if (adapter
->hw
.mac_type
== e1000_82547
) {
725 adapter
->tx_fifo_head
= 0;
726 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
727 adapter
->tx_fifo_size
=
728 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
729 atomic_set(&adapter
->tx_fifo_stall
, 0);
731 } else if (adapter
->hw
.max_frame_size
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
732 /* adjust PBA for jumbo frames */
733 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
735 /* To maintain wire speed transmits, the Tx FIFO should be
736 * large enough to accomodate two full transmit packets,
737 * rounded up to the next 1KB and expressed in KB. Likewise,
738 * the Rx FIFO should be large enough to accomodate at least
739 * one full receive packet and is similarly rounded up and
740 * expressed in KB. */
741 pba
= E1000_READ_REG(&adapter
->hw
, PBA
);
742 /* upper 16 bits has Tx packet buffer allocation size in KB */
743 tx_space
= pba
>> 16;
744 /* lower 16 bits has Rx packet buffer allocation size in KB */
746 /* don't include ethernet FCS because hardware appends/strips */
747 min_rx_space
= adapter
->netdev
->mtu
+ ENET_HEADER_SIZE
+
749 min_tx_space
= min_rx_space
;
751 E1000_ROUNDUP(min_tx_space
, 1024);
753 E1000_ROUNDUP(min_rx_space
, 1024);
756 /* If current Tx allocation is less than the min Tx FIFO size,
757 * and the min Tx FIFO size is less than the current Rx FIFO
758 * allocation, take space away from current Rx allocation */
759 if (tx_space
< min_tx_space
&&
760 ((min_tx_space
- tx_space
) < pba
)) {
761 pba
= pba
- (min_tx_space
- tx_space
);
763 /* PCI/PCIx hardware has PBA alignment constraints */
764 switch (adapter
->hw
.mac_type
) {
765 case e1000_82545
... e1000_82546_rev_3
:
766 pba
&= ~(E1000_PBA_8K
- 1);
772 /* if short on rx space, rx wins and must trump tx
773 * adjustment or use Early Receive if available */
774 if (pba
< min_rx_space
) {
775 switch (adapter
->hw
.mac_type
) {
777 /* ERT enabled in e1000_configure_rx */
787 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
789 /* flow control settings */
790 /* Set the FC high water mark to 90% of the FIFO size.
791 * Required to clear last 3 LSB */
792 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
793 /* We can't use 90% on small FIFOs because the remainder
794 * would be less than 1 full frame. In this case, we size
795 * it to allow at least a full frame above the high water
797 if (pba
< E1000_PBA_16K
)
798 fc_high_water_mark
= (pba
* 1024) - 1600;
800 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
801 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
802 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
803 adapter
->hw
.fc_pause_time
= 0xFFFF;
805 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
806 adapter
->hw
.fc_send_xon
= 1;
807 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
809 /* Allow time for pending master requests to run */
810 e1000_reset_hw(&adapter
->hw
);
811 if (adapter
->hw
.mac_type
>= e1000_82544
)
812 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
814 if (e1000_init_hw(&adapter
->hw
))
815 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
816 e1000_update_mng_vlan(adapter
);
818 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
819 if (adapter
->hw
.mac_type
>= e1000_82544
&&
820 adapter
->hw
.mac_type
<= e1000_82547_rev_2
&&
821 adapter
->hw
.autoneg
== 1 &&
822 adapter
->hw
.autoneg_advertised
== ADVERTISE_1000_FULL
) {
823 uint32_t ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
824 /* clear phy power management bit if we are in gig only mode,
825 * which if enabled will attempt negotiation to 100Mb, which
826 * can cause a loss of link at power off or driver unload */
827 ctrl
&= ~E1000_CTRL_SWDPIN3
;
828 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
831 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
832 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
834 e1000_reset_adaptive(&adapter
->hw
);
835 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
837 if (!adapter
->smart_power_down
&&
838 (adapter
->hw
.mac_type
== e1000_82571
||
839 adapter
->hw
.mac_type
== e1000_82572
)) {
840 uint16_t phy_data
= 0;
841 /* speed up time to link by disabling smart power down, ignore
842 * the return value of this function because there is nothing
843 * different we would do if it failed */
844 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
846 phy_data
&= ~IGP02E1000_PM_SPD
;
847 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
851 e1000_release_manageability(adapter
);
855 * e1000_probe - Device Initialization Routine
856 * @pdev: PCI device information struct
857 * @ent: entry in e1000_pci_tbl
859 * Returns 0 on success, negative on failure
861 * e1000_probe initializes an adapter identified by a pci_dev structure.
862 * The OS initialization, configuring of the adapter private structure,
863 * and a hardware reset occur.
867 e1000_probe(struct pci_dev
*pdev
,
868 const struct pci_device_id
*ent
)
870 struct net_device
*netdev
;
871 struct e1000_adapter
*adapter
;
872 unsigned long mmio_start
, mmio_len
;
873 unsigned long flash_start
, flash_len
;
875 static int cards_found
= 0;
876 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
877 int i
, err
, pci_using_dac
;
878 uint16_t eeprom_data
= 0;
879 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
880 if ((err
= pci_enable_device(pdev
)))
883 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
884 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
887 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
888 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
889 E1000_ERR("No usable DMA configuration, aborting\n");
895 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
898 pci_set_master(pdev
);
901 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
903 goto err_alloc_etherdev
;
905 SET_MODULE_OWNER(netdev
);
906 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
908 pci_set_drvdata(pdev
, netdev
);
909 adapter
= netdev_priv(netdev
);
910 adapter
->netdev
= netdev
;
911 adapter
->pdev
= pdev
;
912 adapter
->hw
.back
= adapter
;
913 adapter
->msg_enable
= (1 << debug
) - 1;
915 mmio_start
= pci_resource_start(pdev
, BAR_0
);
916 mmio_len
= pci_resource_len(pdev
, BAR_0
);
919 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
920 if (!adapter
->hw
.hw_addr
)
923 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
924 if (pci_resource_len(pdev
, i
) == 0)
926 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
927 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
932 netdev
->open
= &e1000_open
;
933 netdev
->stop
= &e1000_close
;
934 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
935 netdev
->get_stats
= &e1000_get_stats
;
936 netdev
->set_multicast_list
= &e1000_set_multi
;
937 netdev
->set_mac_address
= &e1000_set_mac
;
938 netdev
->change_mtu
= &e1000_change_mtu
;
939 netdev
->do_ioctl
= &e1000_ioctl
;
940 e1000_set_ethtool_ops(netdev
);
941 netdev
->tx_timeout
= &e1000_tx_timeout
;
942 netdev
->watchdog_timeo
= 5 * HZ
;
943 #ifdef CONFIG_E1000_NAPI
944 netdev
->poll
= &e1000_clean
;
947 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
948 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
949 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
950 #ifdef CONFIG_NET_POLL_CONTROLLER
951 netdev
->poll_controller
= e1000_netpoll
;
953 strncpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
) - 1);
955 netdev
->mem_start
= mmio_start
;
956 netdev
->mem_end
= mmio_start
+ mmio_len
;
957 netdev
->base_addr
= adapter
->hw
.io_base
;
959 adapter
->bd_number
= cards_found
;
961 /* setup the private structure */
963 if ((err
= e1000_sw_init(adapter
)))
967 /* Flash BAR mapping must happen after e1000_sw_init
968 * because it depends on mac_type */
969 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
970 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
971 flash_start
= pci_resource_start(pdev
, 1);
972 flash_len
= pci_resource_len(pdev
, 1);
973 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
974 if (!adapter
->hw
.flash_address
)
978 if (e1000_check_phy_reset_block(&adapter
->hw
))
979 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
981 if (adapter
->hw
.mac_type
>= e1000_82543
) {
982 netdev
->features
= NETIF_F_SG
|
986 NETIF_F_HW_VLAN_FILTER
;
987 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
988 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
991 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
992 (adapter
->hw
.mac_type
!= e1000_82547
))
993 netdev
->features
|= NETIF_F_TSO
;
995 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
996 netdev
->features
|= NETIF_F_TSO6
;
998 netdev
->features
|= NETIF_F_HIGHDMA
;
1000 netdev
->features
|= NETIF_F_LLTX
;
1002 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
1004 /* initialize eeprom parameters */
1006 if (e1000_init_eeprom_params(&adapter
->hw
)) {
1007 E1000_ERR("EEPROM initialization failed\n");
1011 /* before reading the EEPROM, reset the controller to
1012 * put the device in a known good starting state */
1014 e1000_reset_hw(&adapter
->hw
);
1016 /* make sure the EEPROM is good */
1018 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
1019 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
1023 /* copy the MAC address out of the EEPROM */
1025 if (e1000_read_mac_addr(&adapter
->hw
))
1026 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
1027 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
1028 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
1030 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
1031 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
1035 e1000_get_bus_info(&adapter
->hw
);
1037 init_timer(&adapter
->tx_fifo_stall_timer
);
1038 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
1039 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
1041 init_timer(&adapter
->watchdog_timer
);
1042 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
1043 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
1045 init_timer(&adapter
->phy_info_timer
);
1046 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
1047 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
1049 INIT_WORK(&adapter
->reset_task
, e1000_reset_task
);
1051 e1000_check_options(adapter
);
1053 /* Initial Wake on LAN setting
1054 * If APM wake is enabled in the EEPROM,
1055 * enable the ACPI Magic Packet filter
1058 switch (adapter
->hw
.mac_type
) {
1059 case e1000_82542_rev2_0
:
1060 case e1000_82542_rev2_1
:
1064 e1000_read_eeprom(&adapter
->hw
,
1065 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
1066 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
1069 e1000_read_eeprom(&adapter
->hw
,
1070 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
1071 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
1074 case e1000_82546_rev_3
:
1076 case e1000_80003es2lan
:
1077 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
1078 e1000_read_eeprom(&adapter
->hw
,
1079 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
1084 e1000_read_eeprom(&adapter
->hw
,
1085 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
1088 if (eeprom_data
& eeprom_apme_mask
)
1089 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
1091 /* now that we have the eeprom settings, apply the special cases
1092 * where the eeprom may be wrong or the board simply won't support
1093 * wake on lan on a particular port */
1094 switch (pdev
->device
) {
1095 case E1000_DEV_ID_82546GB_PCIE
:
1096 adapter
->eeprom_wol
= 0;
1098 case E1000_DEV_ID_82546EB_FIBER
:
1099 case E1000_DEV_ID_82546GB_FIBER
:
1100 case E1000_DEV_ID_82571EB_FIBER
:
1101 /* Wake events only supported on port A for dual fiber
1102 * regardless of eeprom setting */
1103 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
1104 adapter
->eeprom_wol
= 0;
1106 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
1107 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
1108 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE
:
1109 /* if quad port adapter, disable WoL on all but port A */
1110 if (global_quad_port_a
!= 0)
1111 adapter
->eeprom_wol
= 0;
1113 adapter
->quad_port_a
= 1;
1114 /* Reset for multiple quad port adapters */
1115 if (++global_quad_port_a
== 4)
1116 global_quad_port_a
= 0;
1120 /* initialize the wol settings based on the eeprom settings */
1121 adapter
->wol
= adapter
->eeprom_wol
;
1123 /* print bus type/speed/width info */
1125 struct e1000_hw
*hw
= &adapter
->hw
;
1126 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
1127 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
1128 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
1129 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
1130 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
1131 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
1132 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
1133 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
1134 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
1135 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
1136 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
1140 for (i
= 0; i
< 6; i
++)
1141 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
1143 /* reset the hardware with the new settings */
1144 e1000_reset(adapter
);
1146 /* If the controller is 82573 and f/w is AMT, do not set
1147 * DRV_LOAD until the interface is up. For all other cases,
1148 * let the f/w know that the h/w is now under the control
1150 if (adapter
->hw
.mac_type
!= e1000_82573
||
1151 !e1000_check_mng_mode(&adapter
->hw
))
1152 e1000_get_hw_control(adapter
);
1154 strcpy(netdev
->name
, "eth%d");
1155 if ((err
= register_netdev(netdev
)))
1158 /* tell the stack to leave us alone until e1000_open() is called */
1159 netif_carrier_off(netdev
);
1160 netif_stop_queue(netdev
);
1162 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
1168 e1000_release_hw_control(adapter
);
1170 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1171 e1000_phy_hw_reset(&adapter
->hw
);
1173 if (adapter
->hw
.flash_address
)
1174 iounmap(adapter
->hw
.flash_address
);
1176 #ifdef CONFIG_E1000_NAPI
1177 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1178 dev_put(&adapter
->polling_netdev
[i
]);
1181 kfree(adapter
->tx_ring
);
1182 kfree(adapter
->rx_ring
);
1183 #ifdef CONFIG_E1000_NAPI
1184 kfree(adapter
->polling_netdev
);
1187 iounmap(adapter
->hw
.hw_addr
);
1189 free_netdev(netdev
);
1191 pci_release_regions(pdev
);
1194 pci_disable_device(pdev
);
1199 * e1000_remove - Device Removal Routine
1200 * @pdev: PCI device information struct
1202 * e1000_remove is called by the PCI subsystem to alert the driver
1203 * that it should release a PCI device. The could be caused by a
1204 * Hot-Plug event, or because the driver is going to be removed from
1208 static void __devexit
1209 e1000_remove(struct pci_dev
*pdev
)
1211 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1212 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1213 #ifdef CONFIG_E1000_NAPI
1217 flush_scheduled_work();
1219 e1000_release_manageability(adapter
);
1221 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1222 * would have already happened in close and is redundant. */
1223 e1000_release_hw_control(adapter
);
1225 unregister_netdev(netdev
);
1226 #ifdef CONFIG_E1000_NAPI
1227 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1228 dev_put(&adapter
->polling_netdev
[i
]);
1231 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1232 e1000_phy_hw_reset(&adapter
->hw
);
1234 kfree(adapter
->tx_ring
);
1235 kfree(adapter
->rx_ring
);
1236 #ifdef CONFIG_E1000_NAPI
1237 kfree(adapter
->polling_netdev
);
1240 iounmap(adapter
->hw
.hw_addr
);
1241 if (adapter
->hw
.flash_address
)
1242 iounmap(adapter
->hw
.flash_address
);
1243 pci_release_regions(pdev
);
1245 free_netdev(netdev
);
1247 pci_disable_device(pdev
);
1251 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1252 * @adapter: board private structure to initialize
1254 * e1000_sw_init initializes the Adapter private data structure.
1255 * Fields are initialized based on PCI device information and
1256 * OS network device settings (MTU size).
1259 static int __devinit
1260 e1000_sw_init(struct e1000_adapter
*adapter
)
1262 struct e1000_hw
*hw
= &adapter
->hw
;
1263 struct net_device
*netdev
= adapter
->netdev
;
1264 struct pci_dev
*pdev
= adapter
->pdev
;
1265 #ifdef CONFIG_E1000_NAPI
1269 /* PCI config space info */
1271 hw
->vendor_id
= pdev
->vendor
;
1272 hw
->device_id
= pdev
->device
;
1273 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1274 hw
->subsystem_id
= pdev
->subsystem_device
;
1276 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1278 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1280 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1281 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1282 hw
->max_frame_size
= netdev
->mtu
+
1283 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1284 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1286 /* identify the MAC */
1288 if (e1000_set_mac_type(hw
)) {
1289 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1293 switch (hw
->mac_type
) {
1298 case e1000_82541_rev_2
:
1299 case e1000_82547_rev_2
:
1300 hw
->phy_init_script
= 1;
1304 e1000_set_media_type(hw
);
1306 hw
->wait_autoneg_complete
= FALSE
;
1307 hw
->tbi_compatibility_en
= TRUE
;
1308 hw
->adaptive_ifs
= TRUE
;
1310 /* Copper options */
1312 if (hw
->media_type
== e1000_media_type_copper
) {
1313 hw
->mdix
= AUTO_ALL_MODES
;
1314 hw
->disable_polarity_correction
= FALSE
;
1315 hw
->master_slave
= E1000_MASTER_SLAVE
;
1318 adapter
->num_tx_queues
= 1;
1319 adapter
->num_rx_queues
= 1;
1321 if (e1000_alloc_queues(adapter
)) {
1322 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1326 #ifdef CONFIG_E1000_NAPI
1327 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1328 adapter
->polling_netdev
[i
].priv
= adapter
;
1329 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1330 adapter
->polling_netdev
[i
].weight
= 64;
1331 dev_hold(&adapter
->polling_netdev
[i
]);
1332 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1334 spin_lock_init(&adapter
->tx_queue_lock
);
1337 atomic_set(&adapter
->irq_sem
, 1);
1338 spin_lock_init(&adapter
->stats_lock
);
1340 set_bit(__E1000_DOWN
, &adapter
->flags
);
1346 * e1000_alloc_queues - Allocate memory for all rings
1347 * @adapter: board private structure to initialize
1349 * We allocate one ring per queue at run-time since we don't know the
1350 * number of queues at compile-time. The polling_netdev array is
1351 * intended for Multiqueue, but should work fine with a single queue.
1354 static int __devinit
1355 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1359 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1360 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1361 if (!adapter
->tx_ring
)
1363 memset(adapter
->tx_ring
, 0, size
);
1365 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1366 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1367 if (!adapter
->rx_ring
) {
1368 kfree(adapter
->tx_ring
);
1371 memset(adapter
->rx_ring
, 0, size
);
1373 #ifdef CONFIG_E1000_NAPI
1374 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1375 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1376 if (!adapter
->polling_netdev
) {
1377 kfree(adapter
->tx_ring
);
1378 kfree(adapter
->rx_ring
);
1381 memset(adapter
->polling_netdev
, 0, size
);
1384 return E1000_SUCCESS
;
1388 * e1000_open - Called when a network interface is made active
1389 * @netdev: network interface device structure
1391 * Returns 0 on success, negative value on failure
1393 * The open entry point is called when a network interface is made
1394 * active by the system (IFF_UP). At this point all resources needed
1395 * for transmit and receive operations are allocated, the interrupt
1396 * handler is registered with the OS, the watchdog timer is started,
1397 * and the stack is notified that the interface is ready.
1401 e1000_open(struct net_device
*netdev
)
1403 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1406 /* disallow open during test */
1407 if (test_bit(__E1000_TESTING
, &adapter
->flags
))
1410 /* allocate transmit descriptors */
1411 err
= e1000_setup_all_tx_resources(adapter
);
1415 /* allocate receive descriptors */
1416 err
= e1000_setup_all_rx_resources(adapter
);
1420 e1000_power_up_phy(adapter
);
1422 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1423 if ((adapter
->hw
.mng_cookie
.status
&
1424 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1425 e1000_update_mng_vlan(adapter
);
1428 /* If AMT is enabled, let the firmware know that the network
1429 * interface is now open */
1430 if (adapter
->hw
.mac_type
== e1000_82573
&&
1431 e1000_check_mng_mode(&adapter
->hw
))
1432 e1000_get_hw_control(adapter
);
1434 /* before we allocate an interrupt, we must be ready to handle it.
1435 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1436 * as soon as we call pci_request_irq, so we have to setup our
1437 * clean_rx handler before we do so. */
1438 e1000_configure(adapter
);
1440 err
= e1000_request_irq(adapter
);
1444 /* From here on the code is the same as e1000_up() */
1445 clear_bit(__E1000_DOWN
, &adapter
->flags
);
1447 #ifdef CONFIG_E1000_NAPI
1448 netif_poll_enable(netdev
);
1451 e1000_irq_enable(adapter
);
1453 /* fire a link status change interrupt to start the watchdog */
1454 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_LSC
);
1456 return E1000_SUCCESS
;
1459 e1000_release_hw_control(adapter
);
1460 e1000_power_down_phy(adapter
);
1461 e1000_free_all_rx_resources(adapter
);
1463 e1000_free_all_tx_resources(adapter
);
1465 e1000_reset(adapter
);
1471 * e1000_close - Disables a network interface
1472 * @netdev: network interface device structure
1474 * Returns 0, this is not allowed to fail
1476 * The close entry point is called when an interface is de-activated
1477 * by the OS. The hardware is still under the drivers control, but
1478 * needs to be disabled. A global MAC reset is issued to stop the
1479 * hardware, and all transmit and receive resources are freed.
1483 e1000_close(struct net_device
*netdev
)
1485 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1487 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1488 e1000_down(adapter
);
1489 e1000_power_down_phy(adapter
);
1490 e1000_free_irq(adapter
);
1492 e1000_free_all_tx_resources(adapter
);
1493 e1000_free_all_rx_resources(adapter
);
1495 /* kill manageability vlan ID if supported, but not if a vlan with
1496 * the same ID is registered on the host OS (let 8021q kill it) */
1497 if ((adapter
->hw
.mng_cookie
.status
&
1498 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
1500 vlan_group_get_device(adapter
->vlgrp
, adapter
->mng_vlan_id
))) {
1501 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1504 /* If AMT is enabled, let the firmware know that the network
1505 * interface is now closed */
1506 if (adapter
->hw
.mac_type
== e1000_82573
&&
1507 e1000_check_mng_mode(&adapter
->hw
))
1508 e1000_release_hw_control(adapter
);
1514 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1515 * @adapter: address of board private structure
1516 * @start: address of beginning of memory
1517 * @len: length of memory
1520 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1521 void *start
, unsigned long len
)
1523 unsigned long begin
= (unsigned long) start
;
1524 unsigned long end
= begin
+ len
;
1526 /* First rev 82545 and 82546 need to not allow any memory
1527 * write location to cross 64k boundary due to errata 23 */
1528 if (adapter
->hw
.mac_type
== e1000_82545
||
1529 adapter
->hw
.mac_type
== e1000_82546
) {
1530 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1537 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1538 * @adapter: board private structure
1539 * @txdr: tx descriptor ring (for a specific queue) to setup
1541 * Return 0 on success, negative on failure
1545 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1546 struct e1000_tx_ring
*txdr
)
1548 struct pci_dev
*pdev
= adapter
->pdev
;
1551 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1552 txdr
->buffer_info
= vmalloc(size
);
1553 if (!txdr
->buffer_info
) {
1555 "Unable to allocate memory for the transmit descriptor ring\n");
1558 memset(txdr
->buffer_info
, 0, size
);
1560 /* round up to nearest 4K */
1562 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1563 E1000_ROUNDUP(txdr
->size
, 4096);
1565 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1568 vfree(txdr
->buffer_info
);
1570 "Unable to allocate memory for the transmit descriptor ring\n");
1574 /* Fix for errata 23, can't cross 64kB boundary */
1575 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1576 void *olddesc
= txdr
->desc
;
1577 dma_addr_t olddma
= txdr
->dma
;
1578 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1579 "at %p\n", txdr
->size
, txdr
->desc
);
1580 /* Try again, without freeing the previous */
1581 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1582 /* Failed allocation, critical failure */
1584 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1585 goto setup_tx_desc_die
;
1588 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1590 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1592 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1594 "Unable to allocate aligned memory "
1595 "for the transmit descriptor ring\n");
1596 vfree(txdr
->buffer_info
);
1599 /* Free old allocation, new allocation was successful */
1600 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1603 memset(txdr
->desc
, 0, txdr
->size
);
1605 txdr
->next_to_use
= 0;
1606 txdr
->next_to_clean
= 0;
1607 spin_lock_init(&txdr
->tx_lock
);
1613 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1614 * (Descriptors) for all queues
1615 * @adapter: board private structure
1617 * Return 0 on success, negative on failure
1621 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1625 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1626 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1629 "Allocation for Tx Queue %u failed\n", i
);
1630 for (i
-- ; i
>= 0; i
--)
1631 e1000_free_tx_resources(adapter
,
1632 &adapter
->tx_ring
[i
]);
1641 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1642 * @adapter: board private structure
1644 * Configure the Tx unit of the MAC after a reset.
1648 e1000_configure_tx(struct e1000_adapter
*adapter
)
1651 struct e1000_hw
*hw
= &adapter
->hw
;
1652 uint32_t tdlen
, tctl
, tipg
, tarc
;
1653 uint32_t ipgr1
, ipgr2
;
1655 /* Setup the HW Tx Head and Tail descriptor pointers */
1657 switch (adapter
->num_tx_queues
) {
1660 tdba
= adapter
->tx_ring
[0].dma
;
1661 tdlen
= adapter
->tx_ring
[0].count
*
1662 sizeof(struct e1000_tx_desc
);
1663 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1664 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1665 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1666 E1000_WRITE_REG(hw
, TDT
, 0);
1667 E1000_WRITE_REG(hw
, TDH
, 0);
1668 adapter
->tx_ring
[0].tdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDH
: E1000_82542_TDH
);
1669 adapter
->tx_ring
[0].tdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_TDT
: E1000_82542_TDT
);
1673 /* Set the default values for the Tx Inter Packet Gap timer */
1674 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
&&
1675 (hw
->media_type
== e1000_media_type_fiber
||
1676 hw
->media_type
== e1000_media_type_internal_serdes
))
1677 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1679 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1681 switch (hw
->mac_type
) {
1682 case e1000_82542_rev2_0
:
1683 case e1000_82542_rev2_1
:
1684 tipg
= DEFAULT_82542_TIPG_IPGT
;
1685 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1686 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1688 case e1000_80003es2lan
:
1689 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1690 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1693 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1694 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1697 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1698 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1699 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1701 /* Set the Tx Interrupt Delay register */
1703 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1704 if (hw
->mac_type
>= e1000_82540
)
1705 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1707 /* Program the Transmit Control Register */
1709 tctl
= E1000_READ_REG(hw
, TCTL
);
1710 tctl
&= ~E1000_TCTL_CT
;
1711 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1712 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1714 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1715 tarc
= E1000_READ_REG(hw
, TARC0
);
1716 /* set the speed mode bit, we'll clear it if we're not at
1717 * gigabit link later */
1719 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1720 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1721 tarc
= E1000_READ_REG(hw
, TARC0
);
1723 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1724 tarc
= E1000_READ_REG(hw
, TARC1
);
1726 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1729 e1000_config_collision_dist(hw
);
1731 /* Setup Transmit Descriptor Settings for eop descriptor */
1732 adapter
->txd_cmd
= E1000_TXD_CMD_EOP
| E1000_TXD_CMD_IFCS
;
1734 /* only set IDE if we are delaying interrupts using the timers */
1735 if (adapter
->tx_int_delay
)
1736 adapter
->txd_cmd
|= E1000_TXD_CMD_IDE
;
1738 if (hw
->mac_type
< e1000_82543
)
1739 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1741 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1743 /* Cache if we're 82544 running in PCI-X because we'll
1744 * need this to apply a workaround later in the send path. */
1745 if (hw
->mac_type
== e1000_82544
&&
1746 hw
->bus_type
== e1000_bus_type_pcix
)
1747 adapter
->pcix_82544
= 1;
1749 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1754 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1755 * @adapter: board private structure
1756 * @rxdr: rx descriptor ring (for a specific queue) to setup
1758 * Returns 0 on success, negative on failure
1762 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1763 struct e1000_rx_ring
*rxdr
)
1765 struct pci_dev
*pdev
= adapter
->pdev
;
1768 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1769 rxdr
->buffer_info
= vmalloc(size
);
1770 if (!rxdr
->buffer_info
) {
1772 "Unable to allocate memory for the receive descriptor ring\n");
1775 memset(rxdr
->buffer_info
, 0, size
);
1777 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1778 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1779 if (!rxdr
->ps_page
) {
1780 vfree(rxdr
->buffer_info
);
1782 "Unable to allocate memory for the receive descriptor ring\n");
1785 memset(rxdr
->ps_page
, 0, size
);
1787 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1788 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1789 if (!rxdr
->ps_page_dma
) {
1790 vfree(rxdr
->buffer_info
);
1791 kfree(rxdr
->ps_page
);
1793 "Unable to allocate memory for the receive descriptor ring\n");
1796 memset(rxdr
->ps_page_dma
, 0, size
);
1798 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1799 desc_len
= sizeof(struct e1000_rx_desc
);
1801 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1803 /* Round up to nearest 4K */
1805 rxdr
->size
= rxdr
->count
* desc_len
;
1806 E1000_ROUNDUP(rxdr
->size
, 4096);
1808 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1812 "Unable to allocate memory for the receive descriptor ring\n");
1814 vfree(rxdr
->buffer_info
);
1815 kfree(rxdr
->ps_page
);
1816 kfree(rxdr
->ps_page_dma
);
1820 /* Fix for errata 23, can't cross 64kB boundary */
1821 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1822 void *olddesc
= rxdr
->desc
;
1823 dma_addr_t olddma
= rxdr
->dma
;
1824 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1825 "at %p\n", rxdr
->size
, rxdr
->desc
);
1826 /* Try again, without freeing the previous */
1827 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1828 /* Failed allocation, critical failure */
1830 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1832 "Unable to allocate memory "
1833 "for the receive descriptor ring\n");
1834 goto setup_rx_desc_die
;
1837 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1839 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1841 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1843 "Unable to allocate aligned memory "
1844 "for the receive descriptor ring\n");
1845 goto setup_rx_desc_die
;
1847 /* Free old allocation, new allocation was successful */
1848 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1851 memset(rxdr
->desc
, 0, rxdr
->size
);
1853 rxdr
->next_to_clean
= 0;
1854 rxdr
->next_to_use
= 0;
1860 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1861 * (Descriptors) for all queues
1862 * @adapter: board private structure
1864 * Return 0 on success, negative on failure
1868 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1872 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1873 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1876 "Allocation for Rx Queue %u failed\n", i
);
1877 for (i
-- ; i
>= 0; i
--)
1878 e1000_free_rx_resources(adapter
,
1879 &adapter
->rx_ring
[i
]);
1888 * e1000_setup_rctl - configure the receive control registers
1889 * @adapter: Board private structure
1891 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1892 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1894 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1896 uint32_t rctl
, rfctl
;
1897 uint32_t psrctl
= 0;
1898 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1902 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1904 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1906 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1907 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1908 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1910 if (adapter
->hw
.tbi_compatibility_on
== 1)
1911 rctl
|= E1000_RCTL_SBP
;
1913 rctl
&= ~E1000_RCTL_SBP
;
1915 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1916 rctl
&= ~E1000_RCTL_LPE
;
1918 rctl
|= E1000_RCTL_LPE
;
1920 /* Setup buffer sizes */
1921 rctl
&= ~E1000_RCTL_SZ_4096
;
1922 rctl
|= E1000_RCTL_BSEX
;
1923 switch (adapter
->rx_buffer_len
) {
1924 case E1000_RXBUFFER_256
:
1925 rctl
|= E1000_RCTL_SZ_256
;
1926 rctl
&= ~E1000_RCTL_BSEX
;
1928 case E1000_RXBUFFER_512
:
1929 rctl
|= E1000_RCTL_SZ_512
;
1930 rctl
&= ~E1000_RCTL_BSEX
;
1932 case E1000_RXBUFFER_1024
:
1933 rctl
|= E1000_RCTL_SZ_1024
;
1934 rctl
&= ~E1000_RCTL_BSEX
;
1936 case E1000_RXBUFFER_2048
:
1938 rctl
|= E1000_RCTL_SZ_2048
;
1939 rctl
&= ~E1000_RCTL_BSEX
;
1941 case E1000_RXBUFFER_4096
:
1942 rctl
|= E1000_RCTL_SZ_4096
;
1944 case E1000_RXBUFFER_8192
:
1945 rctl
|= E1000_RCTL_SZ_8192
;
1947 case E1000_RXBUFFER_16384
:
1948 rctl
|= E1000_RCTL_SZ_16384
;
1952 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1953 /* 82571 and greater support packet-split where the protocol
1954 * header is placed in skb->data and the packet data is
1955 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1956 * In the case of a non-split, skb->data is linearly filled,
1957 * followed by the page buffers. Therefore, skb->data is
1958 * sized to hold the largest protocol header.
1960 /* allocations using alloc_page take too long for regular MTU
1961 * so only enable packet split for jumbo frames */
1962 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1963 if ((adapter
->hw
.mac_type
>= e1000_82571
) && (pages
<= 3) &&
1964 PAGE_SIZE
<= 16384 && (rctl
& E1000_RCTL_LPE
))
1965 adapter
->rx_ps_pages
= pages
;
1967 adapter
->rx_ps_pages
= 0;
1969 if (adapter
->rx_ps_pages
) {
1970 /* Configure extra packet-split registers */
1971 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1972 rfctl
|= E1000_RFCTL_EXTEN
;
1973 /* disable packet split support for IPv6 extension headers,
1974 * because some malformed IPv6 headers can hang the RX */
1975 rfctl
|= (E1000_RFCTL_IPV6_EX_DIS
|
1976 E1000_RFCTL_NEW_IPV6_EXT_DIS
);
1978 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1980 rctl
|= E1000_RCTL_DTYP_PS
;
1982 psrctl
|= adapter
->rx_ps_bsize0
>>
1983 E1000_PSRCTL_BSIZE0_SHIFT
;
1985 switch (adapter
->rx_ps_pages
) {
1987 psrctl
|= PAGE_SIZE
<<
1988 E1000_PSRCTL_BSIZE3_SHIFT
;
1990 psrctl
|= PAGE_SIZE
<<
1991 E1000_PSRCTL_BSIZE2_SHIFT
;
1993 psrctl
|= PAGE_SIZE
>>
1994 E1000_PSRCTL_BSIZE1_SHIFT
;
1998 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
2001 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2005 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
2006 * @adapter: board private structure
2008 * Configure the Rx unit of the MAC after a reset.
2012 e1000_configure_rx(struct e1000_adapter
*adapter
)
2015 struct e1000_hw
*hw
= &adapter
->hw
;
2016 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
2018 if (adapter
->rx_ps_pages
) {
2019 /* this is a 32 byte descriptor */
2020 rdlen
= adapter
->rx_ring
[0].count
*
2021 sizeof(union e1000_rx_desc_packet_split
);
2022 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
2023 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
2025 rdlen
= adapter
->rx_ring
[0].count
*
2026 sizeof(struct e1000_rx_desc
);
2027 adapter
->clean_rx
= e1000_clean_rx_irq
;
2028 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
2031 /* disable receives while setting up the descriptors */
2032 rctl
= E1000_READ_REG(hw
, RCTL
);
2033 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
2035 /* set the Receive Delay Timer Register */
2036 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
2038 if (hw
->mac_type
>= e1000_82540
) {
2039 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
2040 if (adapter
->itr_setting
!= 0)
2041 E1000_WRITE_REG(hw
, ITR
,
2042 1000000000 / (adapter
->itr
* 256));
2045 if (hw
->mac_type
>= e1000_82571
) {
2046 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
2047 /* Reset delay timers after every interrupt */
2048 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
2049 #ifdef CONFIG_E1000_NAPI
2050 /* Auto-Mask interrupts upon ICR access */
2051 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
2052 E1000_WRITE_REG(hw
, IAM
, 0xffffffff);
2054 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
2055 E1000_WRITE_FLUSH(hw
);
2058 /* Setup the HW Rx Head and Tail Descriptor Pointers and
2059 * the Base and Length of the Rx Descriptor Ring */
2060 switch (adapter
->num_rx_queues
) {
2063 rdba
= adapter
->rx_ring
[0].dma
;
2064 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
2065 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
2066 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
2067 E1000_WRITE_REG(hw
, RDT
, 0);
2068 E1000_WRITE_REG(hw
, RDH
, 0);
2069 adapter
->rx_ring
[0].rdh
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDH
: E1000_82542_RDH
);
2070 adapter
->rx_ring
[0].rdt
= ((hw
->mac_type
>= e1000_82543
) ? E1000_RDT
: E1000_82542_RDT
);
2074 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
2075 if (hw
->mac_type
>= e1000_82543
) {
2076 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
2077 if (adapter
->rx_csum
== TRUE
) {
2078 rxcsum
|= E1000_RXCSUM_TUOFL
;
2080 /* Enable 82571 IPv4 payload checksum for UDP fragments
2081 * Must be used in conjunction with packet-split. */
2082 if ((hw
->mac_type
>= e1000_82571
) &&
2083 (adapter
->rx_ps_pages
)) {
2084 rxcsum
|= E1000_RXCSUM_IPPCSE
;
2087 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
2088 /* don't need to clear IPPCSE as it defaults to 0 */
2090 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
2093 /* enable early receives on 82573, only takes effect if using > 2048
2094 * byte total frame size. for example only for jumbo frames */
2095 #define E1000_ERT_2048 0x100
2096 if (hw
->mac_type
== e1000_82573
)
2097 E1000_WRITE_REG(hw
, ERT
, E1000_ERT_2048
);
2099 /* Enable Receives */
2100 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2104 * e1000_free_tx_resources - Free Tx Resources per Queue
2105 * @adapter: board private structure
2106 * @tx_ring: Tx descriptor ring for a specific queue
2108 * Free all transmit software resources
2112 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
2113 struct e1000_tx_ring
*tx_ring
)
2115 struct pci_dev
*pdev
= adapter
->pdev
;
2117 e1000_clean_tx_ring(adapter
, tx_ring
);
2119 vfree(tx_ring
->buffer_info
);
2120 tx_ring
->buffer_info
= NULL
;
2122 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
2124 tx_ring
->desc
= NULL
;
2128 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2129 * @adapter: board private structure
2131 * Free all transmit software resources
2135 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
2139 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2140 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
2144 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
2145 struct e1000_buffer
*buffer_info
)
2147 if (buffer_info
->dma
) {
2148 pci_unmap_page(adapter
->pdev
,
2150 buffer_info
->length
,
2152 buffer_info
->dma
= 0;
2154 if (buffer_info
->skb
) {
2155 dev_kfree_skb_any(buffer_info
->skb
);
2156 buffer_info
->skb
= NULL
;
2158 /* buffer_info must be completely set up in the transmit path */
2162 * e1000_clean_tx_ring - Free Tx Buffers
2163 * @adapter: board private structure
2164 * @tx_ring: ring to be cleaned
2168 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
2169 struct e1000_tx_ring
*tx_ring
)
2171 struct e1000_buffer
*buffer_info
;
2175 /* Free all the Tx ring sk_buffs */
2177 for (i
= 0; i
< tx_ring
->count
; i
++) {
2178 buffer_info
= &tx_ring
->buffer_info
[i
];
2179 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
2182 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
2183 memset(tx_ring
->buffer_info
, 0, size
);
2185 /* Zero out the descriptor ring */
2187 memset(tx_ring
->desc
, 0, tx_ring
->size
);
2189 tx_ring
->next_to_use
= 0;
2190 tx_ring
->next_to_clean
= 0;
2191 tx_ring
->last_tx_tso
= 0;
2193 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
2194 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2198 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2199 * @adapter: board private structure
2203 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2207 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2208 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2212 * e1000_free_rx_resources - Free Rx Resources
2213 * @adapter: board private structure
2214 * @rx_ring: ring to clean the resources from
2216 * Free all receive software resources
2220 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2221 struct e1000_rx_ring
*rx_ring
)
2223 struct pci_dev
*pdev
= adapter
->pdev
;
2225 e1000_clean_rx_ring(adapter
, rx_ring
);
2227 vfree(rx_ring
->buffer_info
);
2228 rx_ring
->buffer_info
= NULL
;
2229 kfree(rx_ring
->ps_page
);
2230 rx_ring
->ps_page
= NULL
;
2231 kfree(rx_ring
->ps_page_dma
);
2232 rx_ring
->ps_page_dma
= NULL
;
2234 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2236 rx_ring
->desc
= NULL
;
2240 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2241 * @adapter: board private structure
2243 * Free all receive software resources
2247 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2251 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2252 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2256 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2257 * @adapter: board private structure
2258 * @rx_ring: ring to free buffers from
2262 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2263 struct e1000_rx_ring
*rx_ring
)
2265 struct e1000_buffer
*buffer_info
;
2266 struct e1000_ps_page
*ps_page
;
2267 struct e1000_ps_page_dma
*ps_page_dma
;
2268 struct pci_dev
*pdev
= adapter
->pdev
;
2272 /* Free all the Rx ring sk_buffs */
2273 for (i
= 0; i
< rx_ring
->count
; i
++) {
2274 buffer_info
= &rx_ring
->buffer_info
[i
];
2275 if (buffer_info
->skb
) {
2276 pci_unmap_single(pdev
,
2278 buffer_info
->length
,
2279 PCI_DMA_FROMDEVICE
);
2281 dev_kfree_skb(buffer_info
->skb
);
2282 buffer_info
->skb
= NULL
;
2284 ps_page
= &rx_ring
->ps_page
[i
];
2285 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2286 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2287 if (!ps_page
->ps_page
[j
]) break;
2288 pci_unmap_page(pdev
,
2289 ps_page_dma
->ps_page_dma
[j
],
2290 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2291 ps_page_dma
->ps_page_dma
[j
] = 0;
2292 put_page(ps_page
->ps_page
[j
]);
2293 ps_page
->ps_page
[j
] = NULL
;
2297 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2298 memset(rx_ring
->buffer_info
, 0, size
);
2299 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2300 memset(rx_ring
->ps_page
, 0, size
);
2301 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2302 memset(rx_ring
->ps_page_dma
, 0, size
);
2304 /* Zero out the descriptor ring */
2306 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2308 rx_ring
->next_to_clean
= 0;
2309 rx_ring
->next_to_use
= 0;
2311 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2312 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2316 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2317 * @adapter: board private structure
2321 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2325 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2326 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2329 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2330 * and memory write and invalidate disabled for certain operations
2333 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2335 struct net_device
*netdev
= adapter
->netdev
;
2338 e1000_pci_clear_mwi(&adapter
->hw
);
2340 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2341 rctl
|= E1000_RCTL_RST
;
2342 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2343 E1000_WRITE_FLUSH(&adapter
->hw
);
2346 if (netif_running(netdev
))
2347 e1000_clean_all_rx_rings(adapter
);
2351 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2353 struct net_device
*netdev
= adapter
->netdev
;
2356 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2357 rctl
&= ~E1000_RCTL_RST
;
2358 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2359 E1000_WRITE_FLUSH(&adapter
->hw
);
2362 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2363 e1000_pci_set_mwi(&adapter
->hw
);
2365 if (netif_running(netdev
)) {
2366 /* No need to loop, because 82542 supports only 1 queue */
2367 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2368 e1000_configure_rx(adapter
);
2369 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2374 * e1000_set_mac - Change the Ethernet Address of the NIC
2375 * @netdev: network interface device structure
2376 * @p: pointer to an address structure
2378 * Returns 0 on success, negative on failure
2382 e1000_set_mac(struct net_device
*netdev
, void *p
)
2384 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2385 struct sockaddr
*addr
= p
;
2387 if (!is_valid_ether_addr(addr
->sa_data
))
2388 return -EADDRNOTAVAIL
;
2390 /* 82542 2.0 needs to be in reset to write receive address registers */
2392 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2393 e1000_enter_82542_rst(adapter
);
2395 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2396 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2398 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2400 /* With 82571 controllers, LAA may be overwritten (with the default)
2401 * due to controller reset from the other port. */
2402 if (adapter
->hw
.mac_type
== e1000_82571
) {
2403 /* activate the work around */
2404 adapter
->hw
.laa_is_present
= 1;
2406 /* Hold a copy of the LAA in RAR[14] This is done so that
2407 * between the time RAR[0] gets clobbered and the time it
2408 * gets fixed (in e1000_watchdog), the actual LAA is in one
2409 * of the RARs and no incoming packets directed to this port
2410 * are dropped. Eventaully the LAA will be in RAR[0] and
2412 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2413 E1000_RAR_ENTRIES
- 1);
2416 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2417 e1000_leave_82542_rst(adapter
);
2423 * e1000_set_multi - Multicast and Promiscuous mode set
2424 * @netdev: network interface device structure
2426 * The set_multi entry point is called whenever the multicast address
2427 * list or the network interface flags are updated. This routine is
2428 * responsible for configuring the hardware for proper multicast,
2429 * promiscuous mode, and all-multi behavior.
2433 e1000_set_multi(struct net_device
*netdev
)
2435 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2436 struct e1000_hw
*hw
= &adapter
->hw
;
2437 struct dev_mc_list
*mc_ptr
;
2439 uint32_t hash_value
;
2440 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2441 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2442 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2443 E1000_NUM_MTA_REGISTERS
;
2445 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2446 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2448 /* reserve RAR[14] for LAA over-write work-around */
2449 if (adapter
->hw
.mac_type
== e1000_82571
)
2452 /* Check for Promiscuous and All Multicast modes */
2454 rctl
= E1000_READ_REG(hw
, RCTL
);
2456 if (netdev
->flags
& IFF_PROMISC
) {
2457 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2458 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2459 rctl
|= E1000_RCTL_MPE
;
2460 rctl
&= ~E1000_RCTL_UPE
;
2462 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2465 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2467 /* 82542 2.0 needs to be in reset to write receive address registers */
2469 if (hw
->mac_type
== e1000_82542_rev2_0
)
2470 e1000_enter_82542_rst(adapter
);
2472 /* load the first 14 multicast address into the exact filters 1-14
2473 * RAR 0 is used for the station MAC adddress
2474 * if there are not 14 addresses, go ahead and clear the filters
2475 * -- with 82571 controllers only 0-13 entries are filled here
2477 mc_ptr
= netdev
->mc_list
;
2479 for (i
= 1; i
< rar_entries
; i
++) {
2481 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2482 mc_ptr
= mc_ptr
->next
;
2484 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2485 E1000_WRITE_FLUSH(hw
);
2486 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2487 E1000_WRITE_FLUSH(hw
);
2491 /* clear the old settings from the multicast hash table */
2493 for (i
= 0; i
< mta_reg_count
; i
++) {
2494 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2495 E1000_WRITE_FLUSH(hw
);
2498 /* load any remaining addresses into the hash table */
2500 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2501 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2502 e1000_mta_set(hw
, hash_value
);
2505 if (hw
->mac_type
== e1000_82542_rev2_0
)
2506 e1000_leave_82542_rst(adapter
);
2509 /* Need to wait a few seconds after link up to get diagnostic information from
2513 e1000_update_phy_info(unsigned long data
)
2515 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2516 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2520 * e1000_82547_tx_fifo_stall - Timer Call-back
2521 * @data: pointer to adapter cast into an unsigned long
2525 e1000_82547_tx_fifo_stall(unsigned long data
)
2527 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2528 struct net_device
*netdev
= adapter
->netdev
;
2531 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2532 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2533 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2534 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2535 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2536 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2537 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2538 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2539 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2540 tctl
& ~E1000_TCTL_EN
);
2541 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2542 adapter
->tx_head_addr
);
2543 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2544 adapter
->tx_head_addr
);
2545 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2546 adapter
->tx_head_addr
);
2547 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2548 adapter
->tx_head_addr
);
2549 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2550 E1000_WRITE_FLUSH(&adapter
->hw
);
2552 adapter
->tx_fifo_head
= 0;
2553 atomic_set(&adapter
->tx_fifo_stall
, 0);
2554 netif_wake_queue(netdev
);
2556 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2562 * e1000_watchdog - Timer Call-back
2563 * @data: pointer to adapter cast into an unsigned long
2566 e1000_watchdog(unsigned long data
)
2568 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2569 struct net_device
*netdev
= adapter
->netdev
;
2570 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2571 uint32_t link
, tctl
;
2574 ret_val
= e1000_check_for_link(&adapter
->hw
);
2575 if ((ret_val
== E1000_ERR_PHY
) &&
2576 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2577 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2578 /* See e1000_kumeran_lock_loss_workaround() */
2580 "Gigabit has been disabled, downgrading speed\n");
2583 if (adapter
->hw
.mac_type
== e1000_82573
) {
2584 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2585 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2586 e1000_update_mng_vlan(adapter
);
2589 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2590 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2591 link
= !adapter
->hw
.serdes_link_down
;
2593 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2596 if (!netif_carrier_ok(netdev
)) {
2598 boolean_t txb2b
= 1;
2599 e1000_get_speed_and_duplex(&adapter
->hw
,
2600 &adapter
->link_speed
,
2601 &adapter
->link_duplex
);
2603 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
2604 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s, "
2605 "Flow Control: %s\n",
2606 adapter
->link_speed
,
2607 adapter
->link_duplex
== FULL_DUPLEX
?
2608 "Full Duplex" : "Half Duplex",
2609 ((ctrl
& E1000_CTRL_TFCE
) && (ctrl
&
2610 E1000_CTRL_RFCE
)) ? "RX/TX" : ((ctrl
&
2611 E1000_CTRL_RFCE
) ? "RX" : ((ctrl
&
2612 E1000_CTRL_TFCE
) ? "TX" : "None" )));
2614 /* tweak tx_queue_len according to speed/duplex
2615 * and adjust the timeout factor */
2616 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2617 adapter
->tx_timeout_factor
= 1;
2618 switch (adapter
->link_speed
) {
2621 netdev
->tx_queue_len
= 10;
2622 adapter
->tx_timeout_factor
= 8;
2626 netdev
->tx_queue_len
= 100;
2627 /* maybe add some timeout factor ? */
2631 if ((adapter
->hw
.mac_type
== e1000_82571
||
2632 adapter
->hw
.mac_type
== e1000_82572
) &&
2635 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2636 tarc0
&= ~(1 << 21);
2637 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2640 /* disable TSO for pcie and 10/100 speeds, to avoid
2641 * some hardware issues */
2642 if (!adapter
->tso_force
&&
2643 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2644 switch (adapter
->link_speed
) {
2648 "10/100 speed: disabling TSO\n");
2649 netdev
->features
&= ~NETIF_F_TSO
;
2650 netdev
->features
&= ~NETIF_F_TSO6
;
2653 netdev
->features
|= NETIF_F_TSO
;
2654 netdev
->features
|= NETIF_F_TSO6
;
2662 /* enable transmits in the hardware, need to do this
2663 * after setting TARC0 */
2664 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2665 tctl
|= E1000_TCTL_EN
;
2666 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2668 netif_carrier_on(netdev
);
2669 netif_wake_queue(netdev
);
2670 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2671 adapter
->smartspeed
= 0;
2673 /* make sure the receive unit is started */
2674 if (adapter
->hw
.rx_needs_kicking
) {
2675 struct e1000_hw
*hw
= &adapter
->hw
;
2676 uint32_t rctl
= E1000_READ_REG(hw
, RCTL
);
2677 E1000_WRITE_REG(hw
, RCTL
, rctl
| E1000_RCTL_EN
);
2681 if (netif_carrier_ok(netdev
)) {
2682 adapter
->link_speed
= 0;
2683 adapter
->link_duplex
= 0;
2684 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2685 netif_carrier_off(netdev
);
2686 netif_stop_queue(netdev
);
2687 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2689 /* 80003ES2LAN workaround--
2690 * For packet buffer work-around on link down event;
2691 * disable receives in the ISR and
2692 * reset device here in the watchdog
2694 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2696 schedule_work(&adapter
->reset_task
);
2699 e1000_smartspeed(adapter
);
2702 e1000_update_stats(adapter
);
2704 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2705 adapter
->tpt_old
= adapter
->stats
.tpt
;
2706 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2707 adapter
->colc_old
= adapter
->stats
.colc
;
2709 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2710 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2711 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2712 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2714 e1000_update_adaptive(&adapter
->hw
);
2716 if (!netif_carrier_ok(netdev
)) {
2717 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2718 /* We've lost link, so the controller stops DMA,
2719 * but we've got queued Tx work that's never going
2720 * to get done, so reset controller to flush Tx.
2721 * (Do the reset outside of interrupt context). */
2722 adapter
->tx_timeout_count
++;
2723 schedule_work(&adapter
->reset_task
);
2727 /* Cause software interrupt to ensure rx ring is cleaned */
2728 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2730 /* Force detection of hung controller every watchdog period */
2731 adapter
->detect_tx_hung
= TRUE
;
2733 /* With 82571 controllers, LAA may be overwritten due to controller
2734 * reset from the other port. Set the appropriate LAA in RAR[0] */
2735 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2736 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2738 /* Reset the timer */
2739 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2742 enum latency_range
{
2746 latency_invalid
= 255
2750 * e1000_update_itr - update the dynamic ITR value based on statistics
2751 * Stores a new ITR value based on packets and byte
2752 * counts during the last interrupt. The advantage of per interrupt
2753 * computation is faster updates and more accurate ITR for the current
2754 * traffic pattern. Constants in this function were computed
2755 * based on theoretical maximum wire speed and thresholds were set based
2756 * on testing data as well as attempting to minimize response time
2757 * while increasing bulk throughput.
2758 * this functionality is controlled by the InterruptThrottleRate module
2759 * parameter (see e1000_param.c)
2760 * @adapter: pointer to adapter
2761 * @itr_setting: current adapter->itr
2762 * @packets: the number of packets during this measurement interval
2763 * @bytes: the number of bytes during this measurement interval
2765 static unsigned int e1000_update_itr(struct e1000_adapter
*adapter
,
2766 uint16_t itr_setting
,
2770 unsigned int retval
= itr_setting
;
2771 struct e1000_hw
*hw
= &adapter
->hw
;
2773 if (unlikely(hw
->mac_type
< e1000_82540
))
2774 goto update_itr_done
;
2777 goto update_itr_done
;
2779 switch (itr_setting
) {
2780 case lowest_latency
:
2781 /* jumbo frames get bulk treatment*/
2782 if (bytes
/packets
> 8000)
2783 retval
= bulk_latency
;
2784 else if ((packets
< 5) && (bytes
> 512))
2785 retval
= low_latency
;
2787 case low_latency
: /* 50 usec aka 20000 ints/s */
2788 if (bytes
> 10000) {
2789 /* jumbo frames need bulk latency setting */
2790 if (bytes
/packets
> 8000)
2791 retval
= bulk_latency
;
2792 else if ((packets
< 10) || ((bytes
/packets
) > 1200))
2793 retval
= bulk_latency
;
2794 else if ((packets
> 35))
2795 retval
= lowest_latency
;
2796 } else if (bytes
/packets
> 2000)
2797 retval
= bulk_latency
;
2798 else if (packets
<= 2 && bytes
< 512)
2799 retval
= lowest_latency
;
2801 case bulk_latency
: /* 250 usec aka 4000 ints/s */
2802 if (bytes
> 25000) {
2804 retval
= low_latency
;
2805 } else if (bytes
< 6000) {
2806 retval
= low_latency
;
2815 static void e1000_set_itr(struct e1000_adapter
*adapter
)
2817 struct e1000_hw
*hw
= &adapter
->hw
;
2818 uint16_t current_itr
;
2819 uint32_t new_itr
= adapter
->itr
;
2821 if (unlikely(hw
->mac_type
< e1000_82540
))
2824 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2825 if (unlikely(adapter
->link_speed
!= SPEED_1000
)) {
2831 adapter
->tx_itr
= e1000_update_itr(adapter
,
2833 adapter
->total_tx_packets
,
2834 adapter
->total_tx_bytes
);
2835 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2836 if (adapter
->itr_setting
== 3 && adapter
->tx_itr
== lowest_latency
)
2837 adapter
->tx_itr
= low_latency
;
2839 adapter
->rx_itr
= e1000_update_itr(adapter
,
2841 adapter
->total_rx_packets
,
2842 adapter
->total_rx_bytes
);
2843 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2844 if (adapter
->itr_setting
== 3 && adapter
->rx_itr
== lowest_latency
)
2845 adapter
->rx_itr
= low_latency
;
2847 current_itr
= max(adapter
->rx_itr
, adapter
->tx_itr
);
2849 switch (current_itr
) {
2850 /* counts and packets in update_itr are dependent on these numbers */
2851 case lowest_latency
:
2855 new_itr
= 20000; /* aka hwitr = ~200 */
2865 if (new_itr
!= adapter
->itr
) {
2866 /* this attempts to bias the interrupt rate towards Bulk
2867 * by adding intermediate steps when interrupt rate is
2869 new_itr
= new_itr
> adapter
->itr
?
2870 min(adapter
->itr
+ (new_itr
>> 2), new_itr
) :
2872 adapter
->itr
= new_itr
;
2873 E1000_WRITE_REG(hw
, ITR
, 1000000000 / (new_itr
* 256));
2879 #define E1000_TX_FLAGS_CSUM 0x00000001
2880 #define E1000_TX_FLAGS_VLAN 0x00000002
2881 #define E1000_TX_FLAGS_TSO 0x00000004
2882 #define E1000_TX_FLAGS_IPV4 0x00000008
2883 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2884 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2887 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2888 struct sk_buff
*skb
)
2890 struct e1000_context_desc
*context_desc
;
2891 struct e1000_buffer
*buffer_info
;
2893 uint32_t cmd_length
= 0;
2894 uint16_t ipcse
= 0, tucse
, mss
;
2895 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2898 if (skb_is_gso(skb
)) {
2899 if (skb_header_cloned(skb
)) {
2900 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2905 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2906 mss
= skb_shinfo(skb
)->gso_size
;
2907 if (skb
->protocol
== htons(ETH_P_IP
)) {
2908 skb
->nh
.iph
->tot_len
= 0;
2909 skb
->nh
.iph
->check
= 0;
2911 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2916 cmd_length
= E1000_TXD_CMD_IP
;
2917 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2918 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2919 skb
->nh
.ipv6h
->payload_len
= 0;
2921 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2922 &skb
->nh
.ipv6h
->daddr
,
2928 ipcss
= skb
->nh
.raw
- skb
->data
;
2929 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2930 tucss
= skb
->h
.raw
- skb
->data
;
2931 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2934 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2935 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2937 i
= tx_ring
->next_to_use
;
2938 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2939 buffer_info
= &tx_ring
->buffer_info
[i
];
2941 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2942 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2943 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2944 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2945 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2946 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2947 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2948 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2949 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2951 buffer_info
->time_stamp
= jiffies
;
2952 buffer_info
->next_to_watch
= i
;
2954 if (++i
== tx_ring
->count
) i
= 0;
2955 tx_ring
->next_to_use
= i
;
2963 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2964 struct sk_buff
*skb
)
2966 struct e1000_context_desc
*context_desc
;
2967 struct e1000_buffer
*buffer_info
;
2971 if (likely(skb
->ip_summed
== CHECKSUM_PARTIAL
)) {
2972 css
= skb
->h
.raw
- skb
->data
;
2974 i
= tx_ring
->next_to_use
;
2975 buffer_info
= &tx_ring
->buffer_info
[i
];
2976 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2978 context_desc
->lower_setup
.ip_config
= 0;
2979 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2980 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2981 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2982 context_desc
->tcp_seg_setup
.data
= 0;
2983 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2985 buffer_info
->time_stamp
= jiffies
;
2986 buffer_info
->next_to_watch
= i
;
2988 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2989 tx_ring
->next_to_use
= i
;
2997 #define E1000_MAX_TXD_PWR 12
2998 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
3001 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
3002 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
3003 unsigned int nr_frags
, unsigned int mss
)
3005 struct e1000_buffer
*buffer_info
;
3006 unsigned int len
= skb
->len
;
3007 unsigned int offset
= 0, size
, count
= 0, i
;
3009 len
-= skb
->data_len
;
3011 i
= tx_ring
->next_to_use
;
3014 buffer_info
= &tx_ring
->buffer_info
[i
];
3015 size
= min(len
, max_per_txd
);
3016 /* Workaround for Controller erratum --
3017 * descriptor for non-tso packet in a linear SKB that follows a
3018 * tso gets written back prematurely before the data is fully
3019 * DMA'd to the controller */
3020 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
3022 tx_ring
->last_tx_tso
= 0;
3026 /* Workaround for premature desc write-backs
3027 * in TSO mode. Append 4-byte sentinel desc */
3028 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
3030 /* work-around for errata 10 and it applies
3031 * to all controllers in PCI-X mode
3032 * The fix is to make sure that the first descriptor of a
3033 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
3035 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3036 (size
> 2015) && count
== 0))
3039 /* Workaround for potential 82544 hang in PCI-X. Avoid
3040 * terminating buffers within evenly-aligned dwords. */
3041 if (unlikely(adapter
->pcix_82544
&&
3042 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
3046 buffer_info
->length
= size
;
3048 pci_map_single(adapter
->pdev
,
3052 buffer_info
->time_stamp
= jiffies
;
3053 buffer_info
->next_to_watch
= i
;
3058 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3061 for (f
= 0; f
< nr_frags
; f
++) {
3062 struct skb_frag_struct
*frag
;
3064 frag
= &skb_shinfo(skb
)->frags
[f
];
3066 offset
= frag
->page_offset
;
3069 buffer_info
= &tx_ring
->buffer_info
[i
];
3070 size
= min(len
, max_per_txd
);
3071 /* Workaround for premature desc write-backs
3072 * in TSO mode. Append 4-byte sentinel desc */
3073 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
3075 /* Workaround for potential 82544 hang in PCI-X.
3076 * Avoid terminating buffers within evenly-aligned
3078 if (unlikely(adapter
->pcix_82544
&&
3079 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
3083 buffer_info
->length
= size
;
3085 pci_map_page(adapter
->pdev
,
3090 buffer_info
->time_stamp
= jiffies
;
3091 buffer_info
->next_to_watch
= i
;
3096 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3100 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
3101 tx_ring
->buffer_info
[i
].skb
= skb
;
3102 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
3108 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
3109 int tx_flags
, int count
)
3111 struct e1000_tx_desc
*tx_desc
= NULL
;
3112 struct e1000_buffer
*buffer_info
;
3113 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
3116 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
3117 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
3119 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3121 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
3122 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
3125 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
3126 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
3127 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
3130 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
3131 txd_lower
|= E1000_TXD_CMD_VLE
;
3132 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
3135 i
= tx_ring
->next_to_use
;
3138 buffer_info
= &tx_ring
->buffer_info
[i
];
3139 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3140 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3141 tx_desc
->lower
.data
=
3142 cpu_to_le32(txd_lower
| buffer_info
->length
);
3143 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
3144 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3147 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
3149 /* Force memory writes to complete before letting h/w
3150 * know there are new descriptors to fetch. (Only
3151 * applicable for weak-ordered memory model archs,
3152 * such as IA-64). */
3155 tx_ring
->next_to_use
= i
;
3156 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
3157 /* we need this if more than one processor can write to our tail
3158 * at a time, it syncronizes IO on IA64/Altix systems */
3163 * 82547 workaround to avoid controller hang in half-duplex environment.
3164 * The workaround is to avoid queuing a large packet that would span
3165 * the internal Tx FIFO ring boundary by notifying the stack to resend
3166 * the packet at a later time. This gives the Tx FIFO an opportunity to
3167 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3168 * to the beginning of the Tx FIFO.
3171 #define E1000_FIFO_HDR 0x10
3172 #define E1000_82547_PAD_LEN 0x3E0
3175 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3177 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
3178 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
3180 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
3182 if (adapter
->link_duplex
!= HALF_DUPLEX
)
3183 goto no_fifo_stall_required
;
3185 if (atomic_read(&adapter
->tx_fifo_stall
))
3188 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
3189 atomic_set(&adapter
->tx_fifo_stall
, 1);
3193 no_fifo_stall_required
:
3194 adapter
->tx_fifo_head
+= skb_fifo_len
;
3195 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
3196 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
3200 #define MINIMUM_DHCP_PACKET_SIZE 282
3202 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
3204 struct e1000_hw
*hw
= &adapter
->hw
;
3205 uint16_t length
, offset
;
3206 if (vlan_tx_tag_present(skb
)) {
3207 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
3208 ( adapter
->hw
.mng_cookie
.status
&
3209 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
3212 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
3213 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
3214 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
3215 const struct iphdr
*ip
=
3216 (struct iphdr
*)((uint8_t *)skb
->data
+14);
3217 if (IPPROTO_UDP
== ip
->protocol
) {
3218 struct udphdr
*udp
=
3219 (struct udphdr
*)((uint8_t *)ip
+
3221 if (ntohs(udp
->dest
) == 67) {
3222 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
3223 length
= skb
->len
- offset
;
3225 return e1000_mng_write_dhcp_info(hw
,
3235 static int __e1000_maybe_stop_tx(struct net_device
*netdev
, int size
)
3237 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3238 struct e1000_tx_ring
*tx_ring
= adapter
->tx_ring
;
3240 netif_stop_queue(netdev
);
3241 /* Herbert's original patch had:
3242 * smp_mb__after_netif_stop_queue();
3243 * but since that doesn't exist yet, just open code it. */
3246 /* We need to check again in a case another CPU has just
3247 * made room available. */
3248 if (likely(E1000_DESC_UNUSED(tx_ring
) < size
))
3252 netif_start_queue(netdev
);
3253 ++adapter
->restart_queue
;
3257 static int e1000_maybe_stop_tx(struct net_device
*netdev
,
3258 struct e1000_tx_ring
*tx_ring
, int size
)
3260 if (likely(E1000_DESC_UNUSED(tx_ring
) >= size
))
3262 return __e1000_maybe_stop_tx(netdev
, size
);
3265 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
3267 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
3269 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3270 struct e1000_tx_ring
*tx_ring
;
3271 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
3272 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
3273 unsigned int tx_flags
= 0;
3274 unsigned int len
= skb
->len
;
3275 unsigned long flags
;
3276 unsigned int nr_frags
= 0;
3277 unsigned int mss
= 0;
3281 len
-= skb
->data_len
;
3283 /* This goes back to the question of how to logically map a tx queue
3284 * to a flow. Right now, performance is impacted slightly negatively
3285 * if using multiple tx queues. If the stack breaks away from a
3286 * single qdisc implementation, we can look at this again. */
3287 tx_ring
= adapter
->tx_ring
;
3289 if (unlikely(skb
->len
<= 0)) {
3290 dev_kfree_skb_any(skb
);
3291 return NETDEV_TX_OK
;
3294 /* 82571 and newer doesn't need the workaround that limited descriptor
3296 if (adapter
->hw
.mac_type
>= e1000_82571
)
3299 mss
= skb_shinfo(skb
)->gso_size
;
3300 /* The controller does a simple calculation to
3301 * make sure there is enough room in the FIFO before
3302 * initiating the DMA for each buffer. The calc is:
3303 * 4 = ceil(buffer len/mss). To make sure we don't
3304 * overrun the FIFO, adjust the max buffer len if mss
3308 max_per_txd
= min(mss
<< 2, max_per_txd
);
3309 max_txd_pwr
= fls(max_per_txd
) - 1;
3311 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3312 * points to just header, pull a few bytes of payload from
3313 * frags into skb->data */
3314 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
3315 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
3316 switch (adapter
->hw
.mac_type
) {
3317 unsigned int pull_size
;
3319 /* Make sure we have room to chop off 4 bytes,
3320 * and that the end alignment will work out to
3321 * this hardware's requirements
3322 * NOTE: this is a TSO only workaround
3323 * if end byte alignment not correct move us
3324 * into the next dword */
3325 if ((unsigned long)(skb
->tail
- 1) & 4)
3332 pull_size
= min((unsigned int)4, skb
->data_len
);
3333 if (!__pskb_pull_tail(skb
, pull_size
)) {
3335 "__pskb_pull_tail failed.\n");
3336 dev_kfree_skb_any(skb
);
3337 return NETDEV_TX_OK
;
3339 len
= skb
->len
- skb
->data_len
;
3348 /* reserve a descriptor for the offload context */
3349 if ((mss
) || (skb
->ip_summed
== CHECKSUM_PARTIAL
))
3353 /* Controller Erratum workaround */
3354 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
3357 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
3359 if (adapter
->pcix_82544
)
3362 /* work-around for errata 10 and it applies to all controllers
3363 * in PCI-X mode, so add one more descriptor to the count
3365 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
3369 nr_frags
= skb_shinfo(skb
)->nr_frags
;
3370 for (f
= 0; f
< nr_frags
; f
++)
3371 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
3373 if (adapter
->pcix_82544
)
3377 if (adapter
->hw
.tx_pkt_filtering
&&
3378 (adapter
->hw
.mac_type
== e1000_82573
))
3379 e1000_transfer_dhcp_info(adapter
, skb
);
3381 local_irq_save(flags
);
3382 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3383 /* Collision - tell upper layer to requeue */
3384 local_irq_restore(flags
);
3385 return NETDEV_TX_LOCKED
;
3388 /* need: count + 2 desc gap to keep tail from touching
3389 * head, otherwise try next time */
3390 if (unlikely(e1000_maybe_stop_tx(netdev
, tx_ring
, count
+ 2))) {
3391 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3392 return NETDEV_TX_BUSY
;
3395 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3396 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3397 netif_stop_queue(netdev
);
3398 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
3399 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3400 return NETDEV_TX_BUSY
;
3404 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3405 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3406 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3409 first
= tx_ring
->next_to_use
;
3411 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3413 dev_kfree_skb_any(skb
);
3414 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3415 return NETDEV_TX_OK
;
3419 tx_ring
->last_tx_tso
= 1;
3420 tx_flags
|= E1000_TX_FLAGS_TSO
;
3421 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3422 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3424 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3425 * 82571 hardware supports TSO capabilities for IPv6 as well...
3426 * no longer assume, we must. */
3427 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3428 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3430 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3431 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3432 max_per_txd
, nr_frags
, mss
));
3434 netdev
->trans_start
= jiffies
;
3436 /* Make sure there is space in the ring for the next send. */
3437 e1000_maybe_stop_tx(netdev
, tx_ring
, MAX_SKB_FRAGS
+ 2);
3439 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3440 return NETDEV_TX_OK
;
3444 * e1000_tx_timeout - Respond to a Tx Hang
3445 * @netdev: network interface device structure
3449 e1000_tx_timeout(struct net_device
*netdev
)
3451 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3453 /* Do the reset outside of interrupt context */
3454 adapter
->tx_timeout_count
++;
3455 schedule_work(&adapter
->reset_task
);
3459 e1000_reset_task(struct work_struct
*work
)
3461 struct e1000_adapter
*adapter
=
3462 container_of(work
, struct e1000_adapter
, reset_task
);
3464 e1000_reinit_locked(adapter
);
3468 * e1000_get_stats - Get System Network Statistics
3469 * @netdev: network interface device structure
3471 * Returns the address of the device statistics structure.
3472 * The statistics are actually updated from the timer callback.
3475 static struct net_device_stats
*
3476 e1000_get_stats(struct net_device
*netdev
)
3478 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3480 /* only return the current stats */
3481 return &adapter
->net_stats
;
3485 * e1000_change_mtu - Change the Maximum Transfer Unit
3486 * @netdev: network interface device structure
3487 * @new_mtu: new value for maximum frame size
3489 * Returns 0 on success, negative on failure
3493 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3495 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3496 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3497 uint16_t eeprom_data
= 0;
3499 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3500 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3501 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3505 /* Adapter-specific max frame size limits. */
3506 switch (adapter
->hw
.mac_type
) {
3507 case e1000_undefined
... e1000_82542_rev2_1
:
3509 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3510 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3515 /* Jumbo Frames not supported if:
3516 * - this is not an 82573L device
3517 * - ASPM is enabled in any way (0x1A bits 3:2) */
3518 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3520 if ((adapter
->hw
.device_id
!= E1000_DEV_ID_82573L
) ||
3521 (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
)) {
3522 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3524 "Jumbo Frames not supported.\n");
3529 /* ERT will be enabled later to enable wire speed receives */
3531 /* fall through to get support */
3534 case e1000_80003es2lan
:
3535 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3536 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3537 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3542 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3546 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3547 * means we reserve 2 more, this pushes us to allocate from the next
3549 * i.e. RXBUFFER_2048 --> size-4096 slab */
3551 if (max_frame
<= E1000_RXBUFFER_256
)
3552 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3553 else if (max_frame
<= E1000_RXBUFFER_512
)
3554 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3555 else if (max_frame
<= E1000_RXBUFFER_1024
)
3556 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3557 else if (max_frame
<= E1000_RXBUFFER_2048
)
3558 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3559 else if (max_frame
<= E1000_RXBUFFER_4096
)
3560 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3561 else if (max_frame
<= E1000_RXBUFFER_8192
)
3562 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3563 else if (max_frame
<= E1000_RXBUFFER_16384
)
3564 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3566 /* adjust allocation if LPE protects us, and we aren't using SBP */
3567 if (!adapter
->hw
.tbi_compatibility_on
&&
3568 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3569 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3570 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3572 netdev
->mtu
= new_mtu
;
3573 adapter
->hw
.max_frame_size
= max_frame
;
3575 if (netif_running(netdev
))
3576 e1000_reinit_locked(adapter
);
3582 * e1000_update_stats - Update the board statistics counters
3583 * @adapter: board private structure
3587 e1000_update_stats(struct e1000_adapter
*adapter
)
3589 struct e1000_hw
*hw
= &adapter
->hw
;
3590 struct pci_dev
*pdev
= adapter
->pdev
;
3591 unsigned long flags
;
3594 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3597 * Prevent stats update while adapter is being reset, or if the pci
3598 * connection is down.
3600 if (adapter
->link_speed
== 0)
3602 if (pci_channel_offline(pdev
))
3605 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3607 /* these counters are modified from e1000_adjust_tbi_stats,
3608 * called from the interrupt context, so they must only
3609 * be written while holding adapter->stats_lock
3612 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3613 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3614 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3615 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3616 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3617 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3618 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3620 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3621 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3622 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3623 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3624 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3625 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3626 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3629 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3630 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3631 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3632 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3633 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3634 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3635 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3636 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3637 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3638 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3639 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3640 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3641 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3642 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3643 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3644 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3645 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3646 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3647 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3648 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3649 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3650 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3651 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3652 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3653 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3654 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3656 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3657 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3658 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3659 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3660 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3661 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3662 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3665 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3666 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3668 /* used for adaptive IFS */
3670 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3671 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3672 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3673 adapter
->stats
.colc
+= hw
->collision_delta
;
3675 if (hw
->mac_type
>= e1000_82543
) {
3676 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3677 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3678 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3679 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3680 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3681 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3683 if (hw
->mac_type
> e1000_82547_rev_2
) {
3684 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3685 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3687 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3688 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3689 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3690 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3691 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3692 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3693 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3694 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3698 /* Fill out the OS statistics structure */
3699 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3700 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3701 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3702 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3703 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3704 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3708 /* RLEC on some newer hardware can be incorrect so build
3709 * our own version based on RUC and ROC */
3710 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3711 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3712 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3713 adapter
->stats
.cexterr
;
3714 adapter
->stats
.rlerrc
= adapter
->stats
.ruc
+ adapter
->stats
.roc
;
3715 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlerrc
;
3716 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3717 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3718 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3721 adapter
->stats
.txerrc
= adapter
->stats
.ecol
+ adapter
->stats
.latecol
;
3722 adapter
->net_stats
.tx_errors
= adapter
->stats
.txerrc
;
3723 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3724 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3725 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3726 if (adapter
->hw
.bad_tx_carr_stats_fd
&&
3727 adapter
->link_duplex
== FULL_DUPLEX
) {
3728 adapter
->net_stats
.tx_carrier_errors
= 0;
3729 adapter
->stats
.tncrs
= 0;
3732 /* Tx Dropped needs to be maintained elsewhere */
3735 if (hw
->media_type
== e1000_media_type_copper
) {
3736 if ((adapter
->link_speed
== SPEED_1000
) &&
3737 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3738 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3739 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3742 if ((hw
->mac_type
<= e1000_82546
) &&
3743 (hw
->phy_type
== e1000_phy_m88
) &&
3744 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3745 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3748 /* Management Stats */
3749 if (adapter
->hw
.has_smbus
) {
3750 adapter
->stats
.mgptc
+= E1000_READ_REG(hw
, MGTPTC
);
3751 adapter
->stats
.mgprc
+= E1000_READ_REG(hw
, MGTPRC
);
3752 adapter
->stats
.mgpdc
+= E1000_READ_REG(hw
, MGTPDC
);
3755 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3757 #ifdef CONFIG_PCI_MSI
3760 * e1000_intr_msi - Interrupt Handler
3761 * @irq: interrupt number
3762 * @data: pointer to a network interface device structure
3766 e1000_intr_msi(int irq
, void *data
)
3768 struct net_device
*netdev
= data
;
3769 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3770 struct e1000_hw
*hw
= &adapter
->hw
;
3771 #ifndef CONFIG_E1000_NAPI
3774 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3776 #ifdef CONFIG_E1000_NAPI
3777 /* read ICR disables interrupts using IAM, so keep up with our
3778 * enable/disable accounting */
3779 atomic_inc(&adapter
->irq_sem
);
3781 if (icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
)) {
3782 hw
->get_link_status
= 1;
3783 /* 80003ES2LAN workaround-- For packet buffer work-around on
3784 * link down event; disable receives here in the ISR and reset
3785 * adapter in watchdog */
3786 if (netif_carrier_ok(netdev
) &&
3787 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3788 /* disable receives */
3789 uint32_t rctl
= E1000_READ_REG(hw
, RCTL
);
3790 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3792 /* guard against interrupt when we're going down */
3793 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3794 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3797 #ifdef CONFIG_E1000_NAPI
3798 if (likely(netif_rx_schedule_prep(netdev
))) {
3799 adapter
->total_tx_bytes
= 0;
3800 adapter
->total_tx_packets
= 0;
3801 adapter
->total_rx_bytes
= 0;
3802 adapter
->total_rx_packets
= 0;
3803 __netif_rx_schedule(netdev
);
3805 e1000_irq_enable(adapter
);
3807 adapter
->total_tx_bytes
= 0;
3808 adapter
->total_rx_bytes
= 0;
3809 adapter
->total_tx_packets
= 0;
3810 adapter
->total_rx_packets
= 0;
3812 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3813 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3814 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3817 if (likely(adapter
->itr_setting
& 3))
3818 e1000_set_itr(adapter
);
3826 * e1000_intr - Interrupt Handler
3827 * @irq: interrupt number
3828 * @data: pointer to a network interface device structure
3832 e1000_intr(int irq
, void *data
)
3834 struct net_device
*netdev
= data
;
3835 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3836 struct e1000_hw
*hw
= &adapter
->hw
;
3837 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3838 #ifndef CONFIG_E1000_NAPI
3842 return IRQ_NONE
; /* Not our interrupt */
3844 #ifdef CONFIG_E1000_NAPI
3845 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3846 * not set, then the adapter didn't send an interrupt */
3847 if (unlikely(hw
->mac_type
>= e1000_82571
&&
3848 !(icr
& E1000_ICR_INT_ASSERTED
)))
3851 /* Interrupt Auto-Mask...upon reading ICR,
3852 * interrupts are masked. No need for the
3853 * IMC write, but it does mean we should
3854 * account for it ASAP. */
3855 if (likely(hw
->mac_type
>= e1000_82571
))
3856 atomic_inc(&adapter
->irq_sem
);
3859 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3860 hw
->get_link_status
= 1;
3861 /* 80003ES2LAN workaround--
3862 * For packet buffer work-around on link down event;
3863 * disable receives here in the ISR and
3864 * reset adapter in watchdog
3866 if (netif_carrier_ok(netdev
) &&
3867 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3868 /* disable receives */
3869 rctl
= E1000_READ_REG(hw
, RCTL
);
3870 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3872 /* guard against interrupt when we're going down */
3873 if (!test_bit(__E1000_DOWN
, &adapter
->flags
))
3874 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 1);
3877 #ifdef CONFIG_E1000_NAPI
3878 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3879 /* disable interrupts, without the synchronize_irq bit */
3880 atomic_inc(&adapter
->irq_sem
);
3881 E1000_WRITE_REG(hw
, IMC
, ~0);
3882 E1000_WRITE_FLUSH(hw
);
3884 if (likely(netif_rx_schedule_prep(netdev
))) {
3885 adapter
->total_tx_bytes
= 0;
3886 adapter
->total_tx_packets
= 0;
3887 adapter
->total_rx_bytes
= 0;
3888 adapter
->total_rx_packets
= 0;
3889 __netif_rx_schedule(netdev
);
3891 /* this really should not happen! if it does it is basically a
3892 * bug, but not a hard error, so enable ints and continue */
3893 e1000_irq_enable(adapter
);
3895 /* Writing IMC and IMS is needed for 82547.
3896 * Due to Hub Link bus being occupied, an interrupt
3897 * de-assertion message is not able to be sent.
3898 * When an interrupt assertion message is generated later,
3899 * two messages are re-ordered and sent out.
3900 * That causes APIC to think 82547 is in de-assertion
3901 * state, while 82547 is in assertion state, resulting
3902 * in dead lock. Writing IMC forces 82547 into
3903 * de-assertion state.
3905 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3906 atomic_inc(&adapter
->irq_sem
);
3907 E1000_WRITE_REG(hw
, IMC
, ~0);
3910 adapter
->total_tx_bytes
= 0;
3911 adapter
->total_rx_bytes
= 0;
3912 adapter
->total_tx_packets
= 0;
3913 adapter
->total_rx_packets
= 0;
3915 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3916 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3917 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3920 if (likely(adapter
->itr_setting
& 3))
3921 e1000_set_itr(adapter
);
3923 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3924 e1000_irq_enable(adapter
);
3930 #ifdef CONFIG_E1000_NAPI
3932 * e1000_clean - NAPI Rx polling callback
3933 * @adapter: board private structure
3937 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3939 struct e1000_adapter
*adapter
;
3940 int work_to_do
= min(*budget
, poll_dev
->quota
);
3941 int tx_cleaned
= 0, work_done
= 0;
3943 /* Must NOT use netdev_priv macro here. */
3944 adapter
= poll_dev
->priv
;
3946 /* Keep link state information with original netdev */
3947 if (!netif_carrier_ok(poll_dev
))
3950 /* e1000_clean is called per-cpu. This lock protects
3951 * tx_ring[0] from being cleaned by multiple cpus
3952 * simultaneously. A failure obtaining the lock means
3953 * tx_ring[0] is currently being cleaned anyway. */
3954 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3955 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3956 &adapter
->tx_ring
[0]);
3957 spin_unlock(&adapter
->tx_queue_lock
);
3960 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3961 &work_done
, work_to_do
);
3963 *budget
-= work_done
;
3964 poll_dev
->quota
-= work_done
;
3966 /* If no Tx and not enough Rx work done, exit the polling mode */
3967 if ((!tx_cleaned
&& (work_done
== 0)) ||
3968 !netif_running(poll_dev
)) {
3970 if (likely(adapter
->itr_setting
& 3))
3971 e1000_set_itr(adapter
);
3972 netif_rx_complete(poll_dev
);
3973 e1000_irq_enable(adapter
);
3982 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3983 * @adapter: board private structure
3987 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3988 struct e1000_tx_ring
*tx_ring
)
3990 struct net_device
*netdev
= adapter
->netdev
;
3991 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3992 struct e1000_buffer
*buffer_info
;
3993 unsigned int i
, eop
;
3994 #ifdef CONFIG_E1000_NAPI
3995 unsigned int count
= 0;
3997 boolean_t cleaned
= FALSE
;
3998 unsigned int total_tx_bytes
=0, total_tx_packets
=0;
4000 i
= tx_ring
->next_to_clean
;
4001 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4002 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
4004 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
4005 for (cleaned
= FALSE
; !cleaned
; ) {
4006 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
4007 buffer_info
= &tx_ring
->buffer_info
[i
];
4008 cleaned
= (i
== eop
);
4011 struct sk_buff
*skb
= buffer_info
->skb
;
4012 unsigned int segs
, bytecount
;
4013 segs
= skb_shinfo(skb
)->gso_segs
?: 1;
4014 /* multiply data chunks by size of headers */
4015 bytecount
= ((segs
- 1) * skb_headlen(skb
)) +
4017 total_tx_packets
+= segs
;
4018 total_tx_bytes
+= bytecount
;
4020 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
4021 tx_desc
->upper
.data
= 0;
4023 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
4026 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
4027 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
4028 #ifdef CONFIG_E1000_NAPI
4029 #define E1000_TX_WEIGHT 64
4030 /* weight of a sort for tx, to avoid endless transmit cleanup */
4031 if (count
++ == E1000_TX_WEIGHT
) break;
4035 tx_ring
->next_to_clean
= i
;
4037 #define TX_WAKE_THRESHOLD 32
4038 if (unlikely(cleaned
&& netif_carrier_ok(netdev
) &&
4039 E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
)) {
4040 /* Make sure that anybody stopping the queue after this
4041 * sees the new next_to_clean.
4044 if (netif_queue_stopped(netdev
)) {
4045 netif_wake_queue(netdev
);
4046 ++adapter
->restart_queue
;
4050 if (adapter
->detect_tx_hung
) {
4051 /* Detect a transmit hang in hardware, this serializes the
4052 * check with the clearing of time_stamp and movement of i */
4053 adapter
->detect_tx_hung
= FALSE
;
4054 if (tx_ring
->buffer_info
[eop
].dma
&&
4055 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
4056 (adapter
->tx_timeout_factor
* HZ
))
4057 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
4058 E1000_STATUS_TXOFF
)) {
4060 /* detected Tx unit hang */
4061 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
4065 " next_to_use <%x>\n"
4066 " next_to_clean <%x>\n"
4067 "buffer_info[next_to_clean]\n"
4068 " time_stamp <%lx>\n"
4069 " next_to_watch <%x>\n"
4071 " next_to_watch.status <%x>\n",
4072 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
4073 sizeof(struct e1000_tx_ring
)),
4074 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
4075 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
4076 tx_ring
->next_to_use
,
4077 tx_ring
->next_to_clean
,
4078 tx_ring
->buffer_info
[eop
].time_stamp
,
4081 eop_desc
->upper
.fields
.status
);
4082 netif_stop_queue(netdev
);
4085 adapter
->total_tx_bytes
+= total_tx_bytes
;
4086 adapter
->total_tx_packets
+= total_tx_packets
;
4091 * e1000_rx_checksum - Receive Checksum Offload for 82543
4092 * @adapter: board private structure
4093 * @status_err: receive descriptor status and error fields
4094 * @csum: receive descriptor csum field
4095 * @sk_buff: socket buffer with received data
4099 e1000_rx_checksum(struct e1000_adapter
*adapter
,
4100 uint32_t status_err
, uint32_t csum
,
4101 struct sk_buff
*skb
)
4103 uint16_t status
= (uint16_t)status_err
;
4104 uint8_t errors
= (uint8_t)(status_err
>> 24);
4105 skb
->ip_summed
= CHECKSUM_NONE
;
4107 /* 82543 or newer only */
4108 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
4109 /* Ignore Checksum bit is set */
4110 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
4111 /* TCP/UDP checksum error bit is set */
4112 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
4113 /* let the stack verify checksum errors */
4114 adapter
->hw_csum_err
++;
4117 /* TCP/UDP Checksum has not been calculated */
4118 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
4119 if (!(status
& E1000_RXD_STAT_TCPCS
))
4122 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
4125 /* It must be a TCP or UDP packet with a valid checksum */
4126 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
4127 /* TCP checksum is good */
4128 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
4129 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
4130 /* IP fragment with UDP payload */
4131 /* Hardware complements the payload checksum, so we undo it
4132 * and then put the value in host order for further stack use.
4134 csum
= ntohl(csum
^ 0xFFFF);
4136 skb
->ip_summed
= CHECKSUM_COMPLETE
;
4138 adapter
->hw_csum_good
++;
4142 * e1000_clean_rx_irq - Send received data up the network stack; legacy
4143 * @adapter: board private structure
4147 #ifdef CONFIG_E1000_NAPI
4148 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4149 struct e1000_rx_ring
*rx_ring
,
4150 int *work_done
, int work_to_do
)
4152 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
4153 struct e1000_rx_ring
*rx_ring
)
4156 struct net_device
*netdev
= adapter
->netdev
;
4157 struct pci_dev
*pdev
= adapter
->pdev
;
4158 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
4159 struct e1000_buffer
*buffer_info
, *next_buffer
;
4160 unsigned long flags
;
4164 int cleaned_count
= 0;
4165 boolean_t cleaned
= FALSE
;
4166 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4168 i
= rx_ring
->next_to_clean
;
4169 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4170 buffer_info
= &rx_ring
->buffer_info
[i
];
4172 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
4173 struct sk_buff
*skb
;
4176 #ifdef CONFIG_E1000_NAPI
4177 if (*work_done
>= work_to_do
)
4181 status
= rx_desc
->status
;
4182 skb
= buffer_info
->skb
;
4183 buffer_info
->skb
= NULL
;
4185 prefetch(skb
->data
- NET_IP_ALIGN
);
4187 if (++i
== rx_ring
->count
) i
= 0;
4188 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
4191 next_buffer
= &rx_ring
->buffer_info
[i
];
4195 pci_unmap_single(pdev
,
4197 buffer_info
->length
,
4198 PCI_DMA_FROMDEVICE
);
4200 length
= le16_to_cpu(rx_desc
->length
);
4202 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
4203 /* All receives must fit into a single buffer */
4204 E1000_DBG("%s: Receive packet consumed multiple"
4205 " buffers\n", netdev
->name
);
4207 buffer_info
->skb
= skb
;
4211 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
4212 last_byte
= *(skb
->data
+ length
- 1);
4213 if (TBI_ACCEPT(&adapter
->hw
, status
,
4214 rx_desc
->errors
, length
, last_byte
)) {
4215 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4216 e1000_tbi_adjust_stats(&adapter
->hw
,
4219 spin_unlock_irqrestore(&adapter
->stats_lock
,
4224 buffer_info
->skb
= skb
;
4229 /* adjust length to remove Ethernet CRC, this must be
4230 * done after the TBI_ACCEPT workaround above */
4233 /* probably a little skewed due to removing CRC */
4234 total_rx_bytes
+= length
;
4237 /* code added for copybreak, this should improve
4238 * performance for small packets with large amounts
4239 * of reassembly being done in the stack */
4240 if (length
< copybreak
) {
4241 struct sk_buff
*new_skb
=
4242 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
4244 skb_reserve(new_skb
, NET_IP_ALIGN
);
4245 memcpy(new_skb
->data
- NET_IP_ALIGN
,
4246 skb
->data
- NET_IP_ALIGN
,
4247 length
+ NET_IP_ALIGN
);
4248 /* save the skb in buffer_info as good */
4249 buffer_info
->skb
= skb
;
4252 /* else just continue with the old one */
4254 /* end copybreak code */
4255 skb_put(skb
, length
);
4257 /* Receive Checksum Offload */
4258 e1000_rx_checksum(adapter
,
4259 (uint32_t)(status
) |
4260 ((uint32_t)(rx_desc
->errors
) << 24),
4261 le16_to_cpu(rx_desc
->csum
), skb
);
4263 skb
->protocol
= eth_type_trans(skb
, netdev
);
4264 #ifdef CONFIG_E1000_NAPI
4265 if (unlikely(adapter
->vlgrp
&&
4266 (status
& E1000_RXD_STAT_VP
))) {
4267 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4268 le16_to_cpu(rx_desc
->special
) &
4269 E1000_RXD_SPC_VLAN_MASK
);
4271 netif_receive_skb(skb
);
4273 #else /* CONFIG_E1000_NAPI */
4274 if (unlikely(adapter
->vlgrp
&&
4275 (status
& E1000_RXD_STAT_VP
))) {
4276 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4277 le16_to_cpu(rx_desc
->special
) &
4278 E1000_RXD_SPC_VLAN_MASK
);
4282 #endif /* CONFIG_E1000_NAPI */
4283 netdev
->last_rx
= jiffies
;
4286 rx_desc
->status
= 0;
4288 /* return some buffers to hardware, one at a time is too slow */
4289 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4290 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4294 /* use prefetched values */
4296 buffer_info
= next_buffer
;
4298 rx_ring
->next_to_clean
= i
;
4300 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4302 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4304 adapter
->total_rx_packets
+= total_rx_packets
;
4305 adapter
->total_rx_bytes
+= total_rx_bytes
;
4310 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
4311 * @adapter: board private structure
4315 #ifdef CONFIG_E1000_NAPI
4316 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4317 struct e1000_rx_ring
*rx_ring
,
4318 int *work_done
, int work_to_do
)
4320 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
4321 struct e1000_rx_ring
*rx_ring
)
4324 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
4325 struct net_device
*netdev
= adapter
->netdev
;
4326 struct pci_dev
*pdev
= adapter
->pdev
;
4327 struct e1000_buffer
*buffer_info
, *next_buffer
;
4328 struct e1000_ps_page
*ps_page
;
4329 struct e1000_ps_page_dma
*ps_page_dma
;
4330 struct sk_buff
*skb
;
4332 uint32_t length
, staterr
;
4333 int cleaned_count
= 0;
4334 boolean_t cleaned
= FALSE
;
4335 unsigned int total_rx_bytes
=0, total_rx_packets
=0;
4337 i
= rx_ring
->next_to_clean
;
4338 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4339 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4340 buffer_info
= &rx_ring
->buffer_info
[i
];
4342 while (staterr
& E1000_RXD_STAT_DD
) {
4343 ps_page
= &rx_ring
->ps_page
[i
];
4344 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4345 #ifdef CONFIG_E1000_NAPI
4346 if (unlikely(*work_done
>= work_to_do
))
4350 skb
= buffer_info
->skb
;
4352 /* in the packet split case this is header only */
4353 prefetch(skb
->data
- NET_IP_ALIGN
);
4355 if (++i
== rx_ring
->count
) i
= 0;
4356 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
4359 next_buffer
= &rx_ring
->buffer_info
[i
];
4363 pci_unmap_single(pdev
, buffer_info
->dma
,
4364 buffer_info
->length
,
4365 PCI_DMA_FROMDEVICE
);
4367 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
4368 E1000_DBG("%s: Packet Split buffers didn't pick up"
4369 " the full packet\n", netdev
->name
);
4370 dev_kfree_skb_irq(skb
);
4374 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
4375 dev_kfree_skb_irq(skb
);
4379 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
4381 if (unlikely(!length
)) {
4382 E1000_DBG("%s: Last part of the packet spanning"
4383 " multiple descriptors\n", netdev
->name
);
4384 dev_kfree_skb_irq(skb
);
4389 skb_put(skb
, length
);
4392 /* this looks ugly, but it seems compiler issues make it
4393 more efficient than reusing j */
4394 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
4396 /* page alloc/put takes too long and effects small packet
4397 * throughput, so unsplit small packets and save the alloc/put*/
4398 if (l1
&& (l1
<= copybreak
) && ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
4400 /* there is no documentation about how to call
4401 * kmap_atomic, so we can't hold the mapping
4403 pci_dma_sync_single_for_cpu(pdev
,
4404 ps_page_dma
->ps_page_dma
[0],
4406 PCI_DMA_FROMDEVICE
);
4407 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
4408 KM_SKB_DATA_SOFTIRQ
);
4409 memcpy(skb
->tail
, vaddr
, l1
);
4410 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
4411 pci_dma_sync_single_for_device(pdev
,
4412 ps_page_dma
->ps_page_dma
[0],
4413 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4414 /* remove the CRC */
4421 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
4422 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
4424 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
4425 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
4426 ps_page_dma
->ps_page_dma
[j
] = 0;
4427 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
4429 ps_page
->ps_page
[j
] = NULL
;
4431 skb
->data_len
+= length
;
4432 skb
->truesize
+= length
;
4435 /* strip the ethernet crc, problem is we're using pages now so
4436 * this whole operation can get a little cpu intensive */
4437 pskb_trim(skb
, skb
->len
- 4);
4440 total_rx_bytes
+= skb
->len
;
4443 e1000_rx_checksum(adapter
, staterr
,
4444 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
4445 skb
->protocol
= eth_type_trans(skb
, netdev
);
4447 if (likely(rx_desc
->wb
.upper
.header_status
&
4448 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
4449 adapter
->rx_hdr_split
++;
4450 #ifdef CONFIG_E1000_NAPI
4451 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4452 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
4453 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4454 E1000_RXD_SPC_VLAN_MASK
);
4456 netif_receive_skb(skb
);
4458 #else /* CONFIG_E1000_NAPI */
4459 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
4460 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
4461 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
4462 E1000_RXD_SPC_VLAN_MASK
);
4466 #endif /* CONFIG_E1000_NAPI */
4467 netdev
->last_rx
= jiffies
;
4470 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
4471 buffer_info
->skb
= NULL
;
4473 /* return some buffers to hardware, one at a time is too slow */
4474 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
4475 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4479 /* use prefetched values */
4481 buffer_info
= next_buffer
;
4483 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
4485 rx_ring
->next_to_clean
= i
;
4487 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
4489 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
4491 adapter
->total_rx_packets
+= total_rx_packets
;
4492 adapter
->total_rx_bytes
+= total_rx_bytes
;
4497 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
4498 * @adapter: address of board private structure
4502 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
4503 struct e1000_rx_ring
*rx_ring
,
4506 struct net_device
*netdev
= adapter
->netdev
;
4507 struct pci_dev
*pdev
= adapter
->pdev
;
4508 struct e1000_rx_desc
*rx_desc
;
4509 struct e1000_buffer
*buffer_info
;
4510 struct sk_buff
*skb
;
4512 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4514 i
= rx_ring
->next_to_use
;
4515 buffer_info
= &rx_ring
->buffer_info
[i
];
4517 while (cleaned_count
--) {
4518 skb
= buffer_info
->skb
;
4524 skb
= netdev_alloc_skb(netdev
, bufsz
);
4525 if (unlikely(!skb
)) {
4526 /* Better luck next round */
4527 adapter
->alloc_rx_buff_failed
++;
4531 /* Fix for errata 23, can't cross 64kB boundary */
4532 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4533 struct sk_buff
*oldskb
= skb
;
4534 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4535 "at %p\n", bufsz
, skb
->data
);
4536 /* Try again, without freeing the previous */
4537 skb
= netdev_alloc_skb(netdev
, bufsz
);
4538 /* Failed allocation, critical failure */
4540 dev_kfree_skb(oldskb
);
4544 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4547 dev_kfree_skb(oldskb
);
4548 break; /* while !buffer_info->skb */
4551 /* Use new allocation */
4552 dev_kfree_skb(oldskb
);
4554 /* Make buffer alignment 2 beyond a 16 byte boundary
4555 * this will result in a 16 byte aligned IP header after
4556 * the 14 byte MAC header is removed
4558 skb_reserve(skb
, NET_IP_ALIGN
);
4560 buffer_info
->skb
= skb
;
4561 buffer_info
->length
= adapter
->rx_buffer_len
;
4563 buffer_info
->dma
= pci_map_single(pdev
,
4565 adapter
->rx_buffer_len
,
4566 PCI_DMA_FROMDEVICE
);
4568 /* Fix for errata 23, can't cross 64kB boundary */
4569 if (!e1000_check_64k_bound(adapter
,
4570 (void *)(unsigned long)buffer_info
->dma
,
4571 adapter
->rx_buffer_len
)) {
4572 DPRINTK(RX_ERR
, ERR
,
4573 "dma align check failed: %u bytes at %p\n",
4574 adapter
->rx_buffer_len
,
4575 (void *)(unsigned long)buffer_info
->dma
);
4577 buffer_info
->skb
= NULL
;
4579 pci_unmap_single(pdev
, buffer_info
->dma
,
4580 adapter
->rx_buffer_len
,
4581 PCI_DMA_FROMDEVICE
);
4583 break; /* while !buffer_info->skb */
4585 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4586 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4588 if (unlikely(++i
== rx_ring
->count
))
4590 buffer_info
= &rx_ring
->buffer_info
[i
];
4593 if (likely(rx_ring
->next_to_use
!= i
)) {
4594 rx_ring
->next_to_use
= i
;
4595 if (unlikely(i
-- == 0))
4596 i
= (rx_ring
->count
- 1);
4598 /* Force memory writes to complete before letting h/w
4599 * know there are new descriptors to fetch. (Only
4600 * applicable for weak-ordered memory model archs,
4601 * such as IA-64). */
4603 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4608 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4609 * @adapter: address of board private structure
4613 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4614 struct e1000_rx_ring
*rx_ring
,
4617 struct net_device
*netdev
= adapter
->netdev
;
4618 struct pci_dev
*pdev
= adapter
->pdev
;
4619 union e1000_rx_desc_packet_split
*rx_desc
;
4620 struct e1000_buffer
*buffer_info
;
4621 struct e1000_ps_page
*ps_page
;
4622 struct e1000_ps_page_dma
*ps_page_dma
;
4623 struct sk_buff
*skb
;
4626 i
= rx_ring
->next_to_use
;
4627 buffer_info
= &rx_ring
->buffer_info
[i
];
4628 ps_page
= &rx_ring
->ps_page
[i
];
4629 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4631 while (cleaned_count
--) {
4632 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4634 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4635 if (j
< adapter
->rx_ps_pages
) {
4636 if (likely(!ps_page
->ps_page
[j
])) {
4637 ps_page
->ps_page
[j
] =
4638 alloc_page(GFP_ATOMIC
);
4639 if (unlikely(!ps_page
->ps_page
[j
])) {
4640 adapter
->alloc_rx_buff_failed
++;
4643 ps_page_dma
->ps_page_dma
[j
] =
4645 ps_page
->ps_page
[j
],
4647 PCI_DMA_FROMDEVICE
);
4649 /* Refresh the desc even if buffer_addrs didn't
4650 * change because each write-back erases
4653 rx_desc
->read
.buffer_addr
[j
+1] =
4654 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4656 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4659 skb
= netdev_alloc_skb(netdev
,
4660 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4662 if (unlikely(!skb
)) {
4663 adapter
->alloc_rx_buff_failed
++;
4667 /* Make buffer alignment 2 beyond a 16 byte boundary
4668 * this will result in a 16 byte aligned IP header after
4669 * the 14 byte MAC header is removed
4671 skb_reserve(skb
, NET_IP_ALIGN
);
4673 buffer_info
->skb
= skb
;
4674 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4675 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4676 adapter
->rx_ps_bsize0
,
4677 PCI_DMA_FROMDEVICE
);
4679 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4681 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4682 buffer_info
= &rx_ring
->buffer_info
[i
];
4683 ps_page
= &rx_ring
->ps_page
[i
];
4684 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4688 if (likely(rx_ring
->next_to_use
!= i
)) {
4689 rx_ring
->next_to_use
= i
;
4690 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4692 /* Force memory writes to complete before letting h/w
4693 * know there are new descriptors to fetch. (Only
4694 * applicable for weak-ordered memory model archs,
4695 * such as IA-64). */
4697 /* Hardware increments by 16 bytes, but packet split
4698 * descriptors are 32 bytes...so we increment tail
4701 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4706 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4711 e1000_smartspeed(struct e1000_adapter
*adapter
)
4713 uint16_t phy_status
;
4716 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4717 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4720 if (adapter
->smartspeed
== 0) {
4721 /* If Master/Slave config fault is asserted twice,
4722 * we assume back-to-back */
4723 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4724 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4725 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4726 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4727 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4728 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4729 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4730 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4732 adapter
->smartspeed
++;
4733 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4734 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4736 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4737 MII_CR_RESTART_AUTO_NEG
);
4738 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4743 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4744 /* If still no link, perhaps using 2/3 pair cable */
4745 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4746 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4747 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4748 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4749 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4750 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4751 MII_CR_RESTART_AUTO_NEG
);
4752 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4755 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4756 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4757 adapter
->smartspeed
= 0;
4768 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4774 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4788 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4790 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4791 struct mii_ioctl_data
*data
= if_mii(ifr
);
4795 unsigned long flags
;
4797 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4802 data
->phy_id
= adapter
->hw
.phy_addr
;
4805 if (!capable(CAP_NET_ADMIN
))
4807 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4808 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4810 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4813 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4816 if (!capable(CAP_NET_ADMIN
))
4818 if (data
->reg_num
& ~(0x1F))
4820 mii_reg
= data
->val_in
;
4821 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4822 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4824 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4827 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4828 switch (data
->reg_num
) {
4830 if (mii_reg
& MII_CR_POWER_DOWN
)
4832 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4833 adapter
->hw
.autoneg
= 1;
4834 adapter
->hw
.autoneg_advertised
= 0x2F;
4837 spddplx
= SPEED_1000
;
4838 else if (mii_reg
& 0x2000)
4839 spddplx
= SPEED_100
;
4842 spddplx
+= (mii_reg
& 0x100)
4845 retval
= e1000_set_spd_dplx(adapter
,
4848 spin_unlock_irqrestore(
4849 &adapter
->stats_lock
,
4854 if (netif_running(adapter
->netdev
))
4855 e1000_reinit_locked(adapter
);
4857 e1000_reset(adapter
);
4859 case M88E1000_PHY_SPEC_CTRL
:
4860 case M88E1000_EXT_PHY_SPEC_CTRL
:
4861 if (e1000_phy_reset(&adapter
->hw
)) {
4862 spin_unlock_irqrestore(
4863 &adapter
->stats_lock
, flags
);
4869 switch (data
->reg_num
) {
4871 if (mii_reg
& MII_CR_POWER_DOWN
)
4873 if (netif_running(adapter
->netdev
))
4874 e1000_reinit_locked(adapter
);
4876 e1000_reset(adapter
);
4880 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4885 return E1000_SUCCESS
;
4889 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4891 struct e1000_adapter
*adapter
= hw
->back
;
4892 int ret_val
= pci_set_mwi(adapter
->pdev
);
4895 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4899 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4901 struct e1000_adapter
*adapter
= hw
->back
;
4903 pci_clear_mwi(adapter
->pdev
);
4907 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4909 struct e1000_adapter
*adapter
= hw
->back
;
4911 pci_read_config_word(adapter
->pdev
, reg
, value
);
4915 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4917 struct e1000_adapter
*adapter
= hw
->back
;
4919 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4923 e1000_read_pcie_cap_reg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4925 struct e1000_adapter
*adapter
= hw
->back
;
4926 uint16_t cap_offset
;
4928 cap_offset
= pci_find_capability(adapter
->pdev
, PCI_CAP_ID_EXP
);
4930 return -E1000_ERR_CONFIG
;
4932 pci_read_config_word(adapter
->pdev
, cap_offset
+ reg
, value
);
4934 return E1000_SUCCESS
;
4938 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4944 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4946 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4947 uint32_t ctrl
, rctl
;
4949 e1000_irq_disable(adapter
);
4950 adapter
->vlgrp
= grp
;
4953 /* enable VLAN tag insert/strip */
4954 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4955 ctrl
|= E1000_CTRL_VME
;
4956 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4958 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4959 /* enable VLAN receive filtering */
4960 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4961 rctl
|= E1000_RCTL_VFE
;
4962 rctl
&= ~E1000_RCTL_CFIEN
;
4963 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4964 e1000_update_mng_vlan(adapter
);
4967 /* disable VLAN tag insert/strip */
4968 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4969 ctrl
&= ~E1000_CTRL_VME
;
4970 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4972 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4973 /* disable VLAN filtering */
4974 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4975 rctl
&= ~E1000_RCTL_VFE
;
4976 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4977 if (adapter
->mng_vlan_id
!=
4978 (uint16_t)E1000_MNG_VLAN_NONE
) {
4979 e1000_vlan_rx_kill_vid(netdev
,
4980 adapter
->mng_vlan_id
);
4981 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4986 e1000_irq_enable(adapter
);
4990 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4992 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4993 uint32_t vfta
, index
;
4995 if ((adapter
->hw
.mng_cookie
.status
&
4996 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4997 (vid
== adapter
->mng_vlan_id
))
4999 /* add VID to filter table */
5000 index
= (vid
>> 5) & 0x7F;
5001 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
5002 vfta
|= (1 << (vid
& 0x1F));
5003 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
5007 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
5009 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5010 uint32_t vfta
, index
;
5012 e1000_irq_disable(adapter
);
5013 vlan_group_set_device(adapter
->vlgrp
, vid
, NULL
);
5014 e1000_irq_enable(adapter
);
5016 if ((adapter
->hw
.mng_cookie
.status
&
5017 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
5018 (vid
== adapter
->mng_vlan_id
)) {
5019 /* release control to f/w */
5020 e1000_release_hw_control(adapter
);
5024 /* remove VID from filter table */
5025 index
= (vid
>> 5) & 0x7F;
5026 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
5027 vfta
&= ~(1 << (vid
& 0x1F));
5028 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
5032 e1000_restore_vlan(struct e1000_adapter
*adapter
)
5034 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
5036 if (adapter
->vlgrp
) {
5038 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
5039 if (!vlan_group_get_device(adapter
->vlgrp
, vid
))
5041 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
5047 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
5049 adapter
->hw
.autoneg
= 0;
5051 /* Fiber NICs only allow 1000 gbps Full duplex */
5052 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
5053 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
5054 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
5059 case SPEED_10
+ DUPLEX_HALF
:
5060 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
5062 case SPEED_10
+ DUPLEX_FULL
:
5063 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
5065 case SPEED_100
+ DUPLEX_HALF
:
5066 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
5068 case SPEED_100
+ DUPLEX_FULL
:
5069 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
5071 case SPEED_1000
+ DUPLEX_FULL
:
5072 adapter
->hw
.autoneg
= 1;
5073 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
5075 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
5077 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
5084 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
5086 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5087 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5088 uint32_t ctrl
, ctrl_ext
, rctl
, status
;
5089 uint32_t wufc
= adapter
->wol
;
5094 netif_device_detach(netdev
);
5096 if (netif_running(netdev
)) {
5097 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
5098 e1000_down(adapter
);
5102 retval
= pci_save_state(pdev
);
5107 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
5108 if (status
& E1000_STATUS_LU
)
5109 wufc
&= ~E1000_WUFC_LNKC
;
5112 e1000_setup_rctl(adapter
);
5113 e1000_set_multi(netdev
);
5115 /* turn on all-multi mode if wake on multicast is enabled */
5116 if (wufc
& E1000_WUFC_MC
) {
5117 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
5118 rctl
|= E1000_RCTL_MPE
;
5119 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
5122 if (adapter
->hw
.mac_type
>= e1000_82540
) {
5123 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
5124 /* advertise wake from D3Cold */
5125 #define E1000_CTRL_ADVD3WUC 0x00100000
5126 /* phy power management enable */
5127 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
5128 ctrl
|= E1000_CTRL_ADVD3WUC
|
5129 E1000_CTRL_EN_PHY_PWR_MGMT
;
5130 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
5133 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
5134 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
5135 /* keep the laser running in D3 */
5136 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
5137 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
5138 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
5141 /* Allow time for pending master requests to run */
5142 e1000_disable_pciex_master(&adapter
->hw
);
5144 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
5145 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
5146 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5147 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5149 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
5150 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
5151 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5152 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5155 e1000_release_manageability(adapter
);
5157 /* make sure adapter isn't asleep if manageability is enabled */
5158 if (adapter
->en_mng_pt
) {
5159 pci_enable_wake(pdev
, PCI_D3hot
, 1);
5160 pci_enable_wake(pdev
, PCI_D3cold
, 1);
5163 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
5164 e1000_phy_powerdown_workaround(&adapter
->hw
);
5166 if (netif_running(netdev
))
5167 e1000_free_irq(adapter
);
5169 /* Release control of h/w to f/w. If f/w is AMT enabled, this
5170 * would have already happened in close and is redundant. */
5171 e1000_release_hw_control(adapter
);
5173 pci_disable_device(pdev
);
5175 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
5182 e1000_resume(struct pci_dev
*pdev
)
5184 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5185 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5188 pci_set_power_state(pdev
, PCI_D0
);
5189 pci_restore_state(pdev
);
5190 if ((err
= pci_enable_device(pdev
))) {
5191 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
5194 pci_set_master(pdev
);
5196 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5197 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5199 if (netif_running(netdev
) && (err
= e1000_request_irq(adapter
)))
5202 e1000_power_up_phy(adapter
);
5203 e1000_reset(adapter
);
5204 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5206 e1000_init_manageability(adapter
);
5208 if (netif_running(netdev
))
5211 netif_device_attach(netdev
);
5213 /* If the controller is 82573 and f/w is AMT, do not set
5214 * DRV_LOAD until the interface is up. For all other cases,
5215 * let the f/w know that the h/w is now under the control
5217 if (adapter
->hw
.mac_type
!= e1000_82573
||
5218 !e1000_check_mng_mode(&adapter
->hw
))
5219 e1000_get_hw_control(adapter
);
5225 static void e1000_shutdown(struct pci_dev
*pdev
)
5227 e1000_suspend(pdev
, PMSG_SUSPEND
);
5230 #ifdef CONFIG_NET_POLL_CONTROLLER
5232 * Polling 'interrupt' - used by things like netconsole to send skbs
5233 * without having to re-enable interrupts. It's not called while
5234 * the interrupt routine is executing.
5237 e1000_netpoll(struct net_device
*netdev
)
5239 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
5241 disable_irq(adapter
->pdev
->irq
);
5242 e1000_intr(adapter
->pdev
->irq
, netdev
);
5243 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
5244 #ifndef CONFIG_E1000_NAPI
5245 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
5247 enable_irq(adapter
->pdev
->irq
);
5252 * e1000_io_error_detected - called when PCI error is detected
5253 * @pdev: Pointer to PCI device
5254 * @state: The current pci conneection state
5256 * This function is called after a PCI bus error affecting
5257 * this device has been detected.
5259 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
5261 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5262 struct e1000_adapter
*adapter
= netdev
->priv
;
5264 netif_device_detach(netdev
);
5266 if (netif_running(netdev
))
5267 e1000_down(adapter
);
5268 pci_disable_device(pdev
);
5270 /* Request a slot slot reset. */
5271 return PCI_ERS_RESULT_NEED_RESET
;
5275 * e1000_io_slot_reset - called after the pci bus has been reset.
5276 * @pdev: Pointer to PCI device
5278 * Restart the card from scratch, as if from a cold-boot. Implementation
5279 * resembles the first-half of the e1000_resume routine.
5281 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
5283 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5284 struct e1000_adapter
*adapter
= netdev
->priv
;
5286 if (pci_enable_device(pdev
)) {
5287 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
5288 return PCI_ERS_RESULT_DISCONNECT
;
5290 pci_set_master(pdev
);
5292 pci_enable_wake(pdev
, PCI_D3hot
, 0);
5293 pci_enable_wake(pdev
, PCI_D3cold
, 0);
5295 e1000_reset(adapter
);
5296 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
5298 return PCI_ERS_RESULT_RECOVERED
;
5302 * e1000_io_resume - called when traffic can start flowing again.
5303 * @pdev: Pointer to PCI device
5305 * This callback is called when the error recovery driver tells us that
5306 * its OK to resume normal operation. Implementation resembles the
5307 * second-half of the e1000_resume routine.
5309 static void e1000_io_resume(struct pci_dev
*pdev
)
5311 struct net_device
*netdev
= pci_get_drvdata(pdev
);
5312 struct e1000_adapter
*adapter
= netdev
->priv
;
5314 e1000_init_manageability(adapter
);
5316 if (netif_running(netdev
)) {
5317 if (e1000_up(adapter
)) {
5318 printk("e1000: can't bring device back up after reset\n");
5323 netif_device_attach(netdev
);
5325 /* If the controller is 82573 and f/w is AMT, do not set
5326 * DRV_LOAD until the interface is up. For all other cases,
5327 * let the f/w know that the h/w is now under the control
5329 if (adapter
->hw
.mac_type
!= e1000_82573
||
5330 !e1000_check_mng_mode(&adapter
->hw
))
5331 e1000_get_hw_control(adapter
);