1 /*******************************************************************************
4 Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
26 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *******************************************************************************/
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 "7.2.7-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(0x1001),
52 INTEL_E1000_ETHERNET_DEVICE(0x1004),
53 INTEL_E1000_ETHERNET_DEVICE(0x1008),
54 INTEL_E1000_ETHERNET_DEVICE(0x1009),
55 INTEL_E1000_ETHERNET_DEVICE(0x100C),
56 INTEL_E1000_ETHERNET_DEVICE(0x100D),
57 INTEL_E1000_ETHERNET_DEVICE(0x100E),
58 INTEL_E1000_ETHERNET_DEVICE(0x100F),
59 INTEL_E1000_ETHERNET_DEVICE(0x1010),
60 INTEL_E1000_ETHERNET_DEVICE(0x1011),
61 INTEL_E1000_ETHERNET_DEVICE(0x1012),
62 INTEL_E1000_ETHERNET_DEVICE(0x1013),
63 INTEL_E1000_ETHERNET_DEVICE(0x1014),
64 INTEL_E1000_ETHERNET_DEVICE(0x1015),
65 INTEL_E1000_ETHERNET_DEVICE(0x1016),
66 INTEL_E1000_ETHERNET_DEVICE(0x1017),
67 INTEL_E1000_ETHERNET_DEVICE(0x1018),
68 INTEL_E1000_ETHERNET_DEVICE(0x1019),
69 INTEL_E1000_ETHERNET_DEVICE(0x101A),
70 INTEL_E1000_ETHERNET_DEVICE(0x101D),
71 INTEL_E1000_ETHERNET_DEVICE(0x101E),
72 INTEL_E1000_ETHERNET_DEVICE(0x1026),
73 INTEL_E1000_ETHERNET_DEVICE(0x1027),
74 INTEL_E1000_ETHERNET_DEVICE(0x1028),
75 INTEL_E1000_ETHERNET_DEVICE(0x1049),
76 INTEL_E1000_ETHERNET_DEVICE(0x104A),
77 INTEL_E1000_ETHERNET_DEVICE(0x104B),
78 INTEL_E1000_ETHERNET_DEVICE(0x104C),
79 INTEL_E1000_ETHERNET_DEVICE(0x104D),
80 INTEL_E1000_ETHERNET_DEVICE(0x105E),
81 INTEL_E1000_ETHERNET_DEVICE(0x105F),
82 INTEL_E1000_ETHERNET_DEVICE(0x1060),
83 INTEL_E1000_ETHERNET_DEVICE(0x1075),
84 INTEL_E1000_ETHERNET_DEVICE(0x1076),
85 INTEL_E1000_ETHERNET_DEVICE(0x1077),
86 INTEL_E1000_ETHERNET_DEVICE(0x1078),
87 INTEL_E1000_ETHERNET_DEVICE(0x1079),
88 INTEL_E1000_ETHERNET_DEVICE(0x107A),
89 INTEL_E1000_ETHERNET_DEVICE(0x107B),
90 INTEL_E1000_ETHERNET_DEVICE(0x107C),
91 INTEL_E1000_ETHERNET_DEVICE(0x107D),
92 INTEL_E1000_ETHERNET_DEVICE(0x107E),
93 INTEL_E1000_ETHERNET_DEVICE(0x107F),
94 INTEL_E1000_ETHERNET_DEVICE(0x108A),
95 INTEL_E1000_ETHERNET_DEVICE(0x108B),
96 INTEL_E1000_ETHERNET_DEVICE(0x108C),
97 INTEL_E1000_ETHERNET_DEVICE(0x1096),
98 INTEL_E1000_ETHERNET_DEVICE(0x1098),
99 INTEL_E1000_ETHERNET_DEVICE(0x1099),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 INTEL_E1000_ETHERNET_DEVICE(0x10A4),
102 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
103 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
104 INTEL_E1000_ETHERNET_DEVICE(0x10BA),
105 INTEL_E1000_ETHERNET_DEVICE(0x10BB),
106 /* required last entry */
110 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
112 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
113 struct e1000_tx_ring
*txdr
);
114 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
115 struct e1000_rx_ring
*rxdr
);
116 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
117 struct e1000_tx_ring
*tx_ring
);
118 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
119 struct e1000_rx_ring
*rx_ring
);
121 /* Local Function Prototypes */
123 static int e1000_init_module(void);
124 static void e1000_exit_module(void);
125 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
126 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
127 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
128 static int e1000_sw_init(struct e1000_adapter
*adapter
);
129 static int e1000_open(struct net_device
*netdev
);
130 static int e1000_close(struct net_device
*netdev
);
131 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
132 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
133 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
134 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
135 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
136 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
137 struct e1000_tx_ring
*tx_ring
);
138 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
139 struct e1000_rx_ring
*rx_ring
);
140 static void e1000_set_multi(struct net_device
*netdev
);
141 static void e1000_update_phy_info(unsigned long data
);
142 static void e1000_watchdog(unsigned long data
);
143 static void e1000_82547_tx_fifo_stall(unsigned long data
);
144 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
145 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
146 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
147 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
148 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
149 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
150 struct e1000_tx_ring
*tx_ring
);
151 #ifdef CONFIG_E1000_NAPI
152 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
153 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
154 struct e1000_rx_ring
*rx_ring
,
155 int *work_done
, int work_to_do
);
156 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
157 struct e1000_rx_ring
*rx_ring
,
158 int *work_done
, int work_to_do
);
160 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
161 struct e1000_rx_ring
*rx_ring
);
162 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
163 struct e1000_rx_ring
*rx_ring
);
165 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
166 struct e1000_rx_ring
*rx_ring
,
168 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
,
171 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
172 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
174 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
175 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
176 static void e1000_tx_timeout(struct net_device
*dev
);
177 static void e1000_reset_task(struct net_device
*dev
);
178 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
179 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
180 struct sk_buff
*skb
);
182 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
183 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
184 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
185 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
187 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
189 static int e1000_resume(struct pci_dev
*pdev
);
191 static void e1000_shutdown(struct pci_dev
*pdev
);
193 #ifdef CONFIG_NET_POLL_CONTROLLER
194 /* for netdump / net console */
195 static void e1000_netpoll (struct net_device
*netdev
);
198 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
199 pci_channel_state_t state
);
200 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
201 static void e1000_io_resume(struct pci_dev
*pdev
);
203 static struct pci_error_handlers e1000_err_handler
= {
204 .error_detected
= e1000_io_error_detected
,
205 .slot_reset
= e1000_io_slot_reset
,
206 .resume
= e1000_io_resume
,
209 static struct pci_driver e1000_driver
= {
210 .name
= e1000_driver_name
,
211 .id_table
= e1000_pci_tbl
,
212 .probe
= e1000_probe
,
213 .remove
= __devexit_p(e1000_remove
),
214 /* Power Managment Hooks */
215 .suspend
= e1000_suspend
,
217 .resume
= e1000_resume
,
219 .shutdown
= e1000_shutdown
,
220 .err_handler
= &e1000_err_handler
223 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
224 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
225 MODULE_LICENSE("GPL");
226 MODULE_VERSION(DRV_VERSION
);
228 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
229 module_param(debug
, int, 0);
230 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
233 * e1000_init_module - Driver Registration Routine
235 * e1000_init_module is the first routine called when the driver is
236 * loaded. All it does is register with the PCI subsystem.
240 e1000_init_module(void)
243 printk(KERN_INFO
"%s - version %s\n",
244 e1000_driver_string
, e1000_driver_version
);
246 printk(KERN_INFO
"%s\n", e1000_copyright
);
248 ret
= pci_register_driver(&e1000_driver
);
253 module_init(e1000_init_module
);
256 * e1000_exit_module - Driver Exit Cleanup Routine
258 * e1000_exit_module is called just before the driver is removed
263 e1000_exit_module(void)
265 pci_unregister_driver(&e1000_driver
);
268 module_exit(e1000_exit_module
);
270 static int e1000_request_irq(struct e1000_adapter
*adapter
)
272 struct net_device
*netdev
= adapter
->netdev
;
276 #ifdef CONFIG_PCI_MSI
277 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
278 adapter
->have_msi
= TRUE
;
279 if ((err
= pci_enable_msi(adapter
->pdev
))) {
281 "Unable to allocate MSI interrupt Error: %d\n", err
);
282 adapter
->have_msi
= FALSE
;
285 if (adapter
->have_msi
)
286 flags
&= ~IRQF_SHARED
;
288 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
289 netdev
->name
, netdev
)))
291 "Unable to allocate interrupt Error: %d\n", err
);
296 static void e1000_free_irq(struct e1000_adapter
*adapter
)
298 struct net_device
*netdev
= adapter
->netdev
;
300 free_irq(adapter
->pdev
->irq
, netdev
);
302 #ifdef CONFIG_PCI_MSI
303 if (adapter
->have_msi
)
304 pci_disable_msi(adapter
->pdev
);
309 * e1000_irq_disable - Mask off interrupt generation on the NIC
310 * @adapter: board private structure
314 e1000_irq_disable(struct e1000_adapter
*adapter
)
316 atomic_inc(&adapter
->irq_sem
);
317 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
318 E1000_WRITE_FLUSH(&adapter
->hw
);
319 synchronize_irq(adapter
->pdev
->irq
);
323 * e1000_irq_enable - Enable default interrupt generation settings
324 * @adapter: board private structure
328 e1000_irq_enable(struct e1000_adapter
*adapter
)
330 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
331 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
332 E1000_WRITE_FLUSH(&adapter
->hw
);
337 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
339 struct net_device
*netdev
= adapter
->netdev
;
340 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
341 uint16_t old_vid
= adapter
->mng_vlan_id
;
342 if (adapter
->vlgrp
) {
343 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
344 if (adapter
->hw
.mng_cookie
.status
&
345 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
346 e1000_vlan_rx_add_vid(netdev
, vid
);
347 adapter
->mng_vlan_id
= vid
;
349 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
351 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
353 !adapter
->vlgrp
->vlan_devices
[old_vid
])
354 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
356 adapter
->mng_vlan_id
= vid
;
361 * e1000_release_hw_control - release control of the h/w to f/w
362 * @adapter: address of board private structure
364 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
365 * For ASF and Pass Through versions of f/w this means that the
366 * driver is no longer loaded. For AMT version (only with 82573) i
367 * of the f/w this means that the netowrk i/f is closed.
372 e1000_release_hw_control(struct e1000_adapter
*adapter
)
378 /* Let firmware taken over control of h/w */
379 switch (adapter
->hw
.mac_type
) {
382 case e1000_80003es2lan
:
383 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
384 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
385 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
388 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
389 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
390 swsm
& ~E1000_SWSM_DRV_LOAD
);
392 extcnf
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
393 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
394 extcnf
& ~E1000_CTRL_EXT_DRV_LOAD
);
402 * e1000_get_hw_control - get control of the h/w from f/w
403 * @adapter: address of board private structure
405 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
406 * For ASF and Pass Through versions of f/w this means that
407 * the driver is loaded. For AMT version (only with 82573)
408 * of the f/w this means that the netowrk i/f is open.
413 e1000_get_hw_control(struct e1000_adapter
*adapter
)
418 /* Let firmware know the driver has taken over */
419 switch (adapter
->hw
.mac_type
) {
422 case e1000_80003es2lan
:
423 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
424 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
425 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
428 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
429 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
430 swsm
| E1000_SWSM_DRV_LOAD
);
433 extcnf
= E1000_READ_REG(&adapter
->hw
, EXTCNF_CTRL
);
434 E1000_WRITE_REG(&adapter
->hw
, EXTCNF_CTRL
,
435 extcnf
| E1000_EXTCNF_CTRL_SWFLAG
);
443 e1000_up(struct e1000_adapter
*adapter
)
445 struct net_device
*netdev
= adapter
->netdev
;
448 /* hardware has been reset, we need to reload some things */
450 e1000_set_multi(netdev
);
452 e1000_restore_vlan(adapter
);
454 e1000_configure_tx(adapter
);
455 e1000_setup_rctl(adapter
);
456 e1000_configure_rx(adapter
);
457 /* call E1000_DESC_UNUSED which always leaves
458 * at least 1 descriptor unused to make sure
459 * next_to_use != next_to_clean */
460 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
461 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
462 adapter
->alloc_rx_buf(adapter
, ring
,
463 E1000_DESC_UNUSED(ring
));
466 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
468 mod_timer(&adapter
->watchdog_timer
, jiffies
);
470 #ifdef CONFIG_E1000_NAPI
471 netif_poll_enable(netdev
);
473 e1000_irq_enable(adapter
);
479 * e1000_power_up_phy - restore link in case the phy was powered down
480 * @adapter: address of board private structure
482 * The phy may be powered down to save power and turn off link when the
483 * driver is unloaded and wake on lan is not enabled (among others)
484 * *** this routine MUST be followed by a call to e1000_reset ***
488 void e1000_power_up_phy(struct e1000_adapter
*adapter
)
490 uint16_t mii_reg
= 0;
492 /* Just clear the power down bit to wake the phy back up */
493 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
494 /* according to the manual, the phy will retain its
495 * settings across a power-down/up cycle */
496 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
497 mii_reg
&= ~MII_CR_POWER_DOWN
;
498 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
502 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
504 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
505 e1000_check_mng_mode(&adapter
->hw
);
506 /* Power down the PHY so no link is implied when interface is down
507 * The PHY cannot be powered down if any of the following is TRUE
510 * (c) SoL/IDER session is active */
511 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
512 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
513 adapter
->hw
.media_type
== e1000_media_type_copper
&&
514 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
516 !e1000_check_phy_reset_block(&adapter
->hw
)) {
517 uint16_t mii_reg
= 0;
518 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
519 mii_reg
|= MII_CR_POWER_DOWN
;
520 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
526 e1000_down(struct e1000_adapter
*adapter
)
528 struct net_device
*netdev
= adapter
->netdev
;
530 e1000_irq_disable(adapter
);
532 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
533 del_timer_sync(&adapter
->watchdog_timer
);
534 del_timer_sync(&adapter
->phy_info_timer
);
536 #ifdef CONFIG_E1000_NAPI
537 netif_poll_disable(netdev
);
539 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
540 adapter
->link_speed
= 0;
541 adapter
->link_duplex
= 0;
542 netif_carrier_off(netdev
);
543 netif_stop_queue(netdev
);
545 e1000_reset(adapter
);
546 e1000_clean_all_tx_rings(adapter
);
547 e1000_clean_all_rx_rings(adapter
);
551 e1000_reinit_locked(struct e1000_adapter
*adapter
)
553 WARN_ON(in_interrupt());
554 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
558 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
562 e1000_reset(struct e1000_adapter
*adapter
)
565 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
567 /* Repartition Pba for greater than 9k mtu
568 * To take effect CTRL.RST is required.
571 switch (adapter
->hw
.mac_type
) {
573 case e1000_82547_rev_2
:
578 case e1000_80003es2lan
:
592 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
593 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
594 pba
-= 8; /* allocate more FIFO for Tx */
597 if (adapter
->hw
.mac_type
== e1000_82547
) {
598 adapter
->tx_fifo_head
= 0;
599 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
600 adapter
->tx_fifo_size
=
601 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
602 atomic_set(&adapter
->tx_fifo_stall
, 0);
605 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
607 /* flow control settings */
608 /* Set the FC high water mark to 90% of the FIFO size.
609 * Required to clear last 3 LSB */
610 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
611 /* We can't use 90% on small FIFOs because the remainder
612 * would be less than 1 full frame. In this case, we size
613 * it to allow at least a full frame above the high water
615 if (pba
< E1000_PBA_16K
)
616 fc_high_water_mark
= (pba
* 1024) - 1600;
618 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
619 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
620 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
621 adapter
->hw
.fc_pause_time
= 0xFFFF;
623 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
624 adapter
->hw
.fc_send_xon
= 1;
625 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
627 /* Allow time for pending master requests to run */
628 e1000_reset_hw(&adapter
->hw
);
629 if (adapter
->hw
.mac_type
>= e1000_82544
)
630 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
631 if (e1000_init_hw(&adapter
->hw
))
632 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
633 e1000_update_mng_vlan(adapter
);
634 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
635 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
637 e1000_reset_adaptive(&adapter
->hw
);
638 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
640 if (!adapter
->smart_power_down
&&
641 (adapter
->hw
.mac_type
== e1000_82571
||
642 adapter
->hw
.mac_type
== e1000_82572
)) {
643 uint16_t phy_data
= 0;
644 /* speed up time to link by disabling smart power down, ignore
645 * the return value of this function because there is nothing
646 * different we would do if it failed */
647 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
649 phy_data
&= ~IGP02E1000_PM_SPD
;
650 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
654 if (adapter
->hw
.mac_type
< e1000_ich8lan
)
655 /* FIXME: this code is duplicate and wrong for PCI Express */
656 if (adapter
->en_mng_pt
) {
657 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
658 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
659 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
664 * e1000_probe - Device Initialization Routine
665 * @pdev: PCI device information struct
666 * @ent: entry in e1000_pci_tbl
668 * Returns 0 on success, negative on failure
670 * e1000_probe initializes an adapter identified by a pci_dev structure.
671 * The OS initialization, configuring of the adapter private structure,
672 * and a hardware reset occur.
676 e1000_probe(struct pci_dev
*pdev
,
677 const struct pci_device_id
*ent
)
679 struct net_device
*netdev
;
680 struct e1000_adapter
*adapter
;
681 unsigned long mmio_start
, mmio_len
;
682 unsigned long flash_start
, flash_len
;
684 static int cards_found
= 0;
685 static int global_quad_port_a
= 0; /* global ksp3 port a indication */
686 int i
, err
, pci_using_dac
;
687 uint16_t eeprom_data
= 0;
688 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
689 if ((err
= pci_enable_device(pdev
)))
692 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)) &&
693 !(err
= pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))) {
696 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
)) &&
697 (err
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
))) {
698 E1000_ERR("No usable DMA configuration, aborting\n");
704 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
707 pci_set_master(pdev
);
710 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
712 goto err_alloc_etherdev
;
714 SET_MODULE_OWNER(netdev
);
715 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
717 pci_set_drvdata(pdev
, netdev
);
718 adapter
= netdev_priv(netdev
);
719 adapter
->netdev
= netdev
;
720 adapter
->pdev
= pdev
;
721 adapter
->hw
.back
= adapter
;
722 adapter
->msg_enable
= (1 << debug
) - 1;
724 mmio_start
= pci_resource_start(pdev
, BAR_0
);
725 mmio_len
= pci_resource_len(pdev
, BAR_0
);
728 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
729 if (!adapter
->hw
.hw_addr
)
732 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
733 if (pci_resource_len(pdev
, i
) == 0)
735 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
736 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
741 netdev
->open
= &e1000_open
;
742 netdev
->stop
= &e1000_close
;
743 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
744 netdev
->get_stats
= &e1000_get_stats
;
745 netdev
->set_multicast_list
= &e1000_set_multi
;
746 netdev
->set_mac_address
= &e1000_set_mac
;
747 netdev
->change_mtu
= &e1000_change_mtu
;
748 netdev
->do_ioctl
= &e1000_ioctl
;
749 e1000_set_ethtool_ops(netdev
);
750 netdev
->tx_timeout
= &e1000_tx_timeout
;
751 netdev
->watchdog_timeo
= 5 * HZ
;
752 #ifdef CONFIG_E1000_NAPI
753 netdev
->poll
= &e1000_clean
;
756 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
757 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
758 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
759 #ifdef CONFIG_NET_POLL_CONTROLLER
760 netdev
->poll_controller
= e1000_netpoll
;
762 strcpy(netdev
->name
, pci_name(pdev
));
764 netdev
->mem_start
= mmio_start
;
765 netdev
->mem_end
= mmio_start
+ mmio_len
;
766 netdev
->base_addr
= adapter
->hw
.io_base
;
768 adapter
->bd_number
= cards_found
;
770 /* setup the private structure */
772 if ((err
= e1000_sw_init(adapter
)))
776 /* Flash BAR mapping must happen after e1000_sw_init
777 * because it depends on mac_type */
778 if ((adapter
->hw
.mac_type
== e1000_ich8lan
) &&
779 (pci_resource_flags(pdev
, 1) & IORESOURCE_MEM
)) {
780 flash_start
= pci_resource_start(pdev
, 1);
781 flash_len
= pci_resource_len(pdev
, 1);
782 adapter
->hw
.flash_address
= ioremap(flash_start
, flash_len
);
783 if (!adapter
->hw
.flash_address
)
787 if (e1000_check_phy_reset_block(&adapter
->hw
))
788 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
790 if (adapter
->hw
.mac_type
>= e1000_82543
) {
791 netdev
->features
= NETIF_F_SG
|
795 NETIF_F_HW_VLAN_FILTER
;
796 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
797 netdev
->features
&= ~NETIF_F_HW_VLAN_FILTER
;
801 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
802 (adapter
->hw
.mac_type
!= e1000_82547
))
803 netdev
->features
|= NETIF_F_TSO
;
805 #ifdef NETIF_F_TSO_IPV6
806 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
807 netdev
->features
|= NETIF_F_TSO_IPV6
;
811 netdev
->features
|= NETIF_F_HIGHDMA
;
813 netdev
->features
|= NETIF_F_LLTX
;
815 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
817 /* initialize eeprom parameters */
819 if (e1000_init_eeprom_params(&adapter
->hw
)) {
820 E1000_ERR("EEPROM initialization failed\n");
824 /* before reading the EEPROM, reset the controller to
825 * put the device in a known good starting state */
827 e1000_reset_hw(&adapter
->hw
);
829 /* make sure the EEPROM is good */
831 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
832 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
836 /* copy the MAC address out of the EEPROM */
838 if (e1000_read_mac_addr(&adapter
->hw
))
839 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
840 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
841 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
843 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
844 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
848 e1000_get_bus_info(&adapter
->hw
);
850 init_timer(&adapter
->tx_fifo_stall_timer
);
851 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
852 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
854 init_timer(&adapter
->watchdog_timer
);
855 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
856 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
858 init_timer(&adapter
->phy_info_timer
);
859 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
860 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
862 INIT_WORK(&adapter
->reset_task
,
863 (void (*)(void *))e1000_reset_task
, netdev
);
865 /* we're going to reset, so assume we have no link for now */
867 netif_carrier_off(netdev
);
868 netif_stop_queue(netdev
);
870 e1000_check_options(adapter
);
872 /* Initial Wake on LAN setting
873 * If APM wake is enabled in the EEPROM,
874 * enable the ACPI Magic Packet filter
877 switch (adapter
->hw
.mac_type
) {
878 case e1000_82542_rev2_0
:
879 case e1000_82542_rev2_1
:
883 e1000_read_eeprom(&adapter
->hw
,
884 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
885 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
888 e1000_read_eeprom(&adapter
->hw
,
889 EEPROM_INIT_CONTROL1_REG
, 1, &eeprom_data
);
890 eeprom_apme_mask
= E1000_EEPROM_ICH8_APME
;
893 case e1000_82546_rev_3
:
895 case e1000_80003es2lan
:
896 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
897 e1000_read_eeprom(&adapter
->hw
,
898 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
903 e1000_read_eeprom(&adapter
->hw
,
904 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
907 if (eeprom_data
& eeprom_apme_mask
)
908 adapter
->eeprom_wol
|= E1000_WUFC_MAG
;
910 /* now that we have the eeprom settings, apply the special cases
911 * where the eeprom may be wrong or the board simply won't support
912 * wake on lan on a particular port */
913 switch (pdev
->device
) {
914 case E1000_DEV_ID_82546GB_PCIE
:
915 adapter
->eeprom_wol
= 0;
917 case E1000_DEV_ID_82546EB_FIBER
:
918 case E1000_DEV_ID_82546GB_FIBER
:
919 case E1000_DEV_ID_82571EB_FIBER
:
920 /* Wake events only supported on port A for dual fiber
921 * regardless of eeprom setting */
922 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
923 adapter
->eeprom_wol
= 0;
925 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
:
926 case E1000_DEV_ID_82571EB_QUAD_COPPER
:
927 /* if quad port adapter, disable WoL on all but port A */
928 if (global_quad_port_a
!= 0)
929 adapter
->eeprom_wol
= 0;
931 adapter
->quad_port_a
= 1;
932 /* Reset for multiple quad port adapters */
933 if (++global_quad_port_a
== 4)
934 global_quad_port_a
= 0;
938 /* initialize the wol settings based on the eeprom settings */
939 adapter
->wol
= adapter
->eeprom_wol
;
941 /* print bus type/speed/width info */
943 struct e1000_hw
*hw
= &adapter
->hw
;
944 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
945 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
946 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
947 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
948 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
949 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
950 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
951 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
952 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
953 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
954 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
958 for (i
= 0; i
< 6; i
++)
959 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
961 /* reset the hardware with the new settings */
962 e1000_reset(adapter
);
964 /* If the controller is 82573 and f/w is AMT, do not set
965 * DRV_LOAD until the interface is up. For all other cases,
966 * let the f/w know that the h/w is now under the control
968 if (adapter
->hw
.mac_type
!= e1000_82573
||
969 !e1000_check_mng_mode(&adapter
->hw
))
970 e1000_get_hw_control(adapter
);
972 strcpy(netdev
->name
, "eth%d");
973 if ((err
= register_netdev(netdev
)))
976 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
982 e1000_release_hw_control(adapter
);
984 if (!e1000_check_phy_reset_block(&adapter
->hw
))
985 e1000_phy_hw_reset(&adapter
->hw
);
987 if (adapter
->hw
.flash_address
)
988 iounmap(adapter
->hw
.flash_address
);
990 #ifdef CONFIG_E1000_NAPI
991 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
992 dev_put(&adapter
->polling_netdev
[i
]);
995 kfree(adapter
->tx_ring
);
996 kfree(adapter
->rx_ring
);
997 #ifdef CONFIG_E1000_NAPI
998 kfree(adapter
->polling_netdev
);
1001 iounmap(adapter
->hw
.hw_addr
);
1003 free_netdev(netdev
);
1005 pci_release_regions(pdev
);
1008 pci_disable_device(pdev
);
1013 * e1000_remove - Device Removal Routine
1014 * @pdev: PCI device information struct
1016 * e1000_remove is called by the PCI subsystem to alert the driver
1017 * that it should release a PCI device. The could be caused by a
1018 * Hot-Plug event, or because the driver is going to be removed from
1022 static void __devexit
1023 e1000_remove(struct pci_dev
*pdev
)
1025 struct net_device
*netdev
= pci_get_drvdata(pdev
);
1026 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1028 #ifdef CONFIG_E1000_NAPI
1032 flush_scheduled_work();
1034 if (adapter
->hw
.mac_type
>= e1000_82540
&&
1035 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
1036 adapter
->hw
.media_type
== e1000_media_type_copper
) {
1037 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
1038 if (manc
& E1000_MANC_SMBUS_EN
) {
1039 manc
|= E1000_MANC_ARP_EN
;
1040 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
1044 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1045 * would have already happened in close and is redundant. */
1046 e1000_release_hw_control(adapter
);
1048 unregister_netdev(netdev
);
1049 #ifdef CONFIG_E1000_NAPI
1050 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1051 dev_put(&adapter
->polling_netdev
[i
]);
1054 if (!e1000_check_phy_reset_block(&adapter
->hw
))
1055 e1000_phy_hw_reset(&adapter
->hw
);
1057 kfree(adapter
->tx_ring
);
1058 kfree(adapter
->rx_ring
);
1059 #ifdef CONFIG_E1000_NAPI
1060 kfree(adapter
->polling_netdev
);
1063 iounmap(adapter
->hw
.hw_addr
);
1064 if (adapter
->hw
.flash_address
)
1065 iounmap(adapter
->hw
.flash_address
);
1066 pci_release_regions(pdev
);
1068 free_netdev(netdev
);
1070 pci_disable_device(pdev
);
1074 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1075 * @adapter: board private structure to initialize
1077 * e1000_sw_init initializes the Adapter private data structure.
1078 * Fields are initialized based on PCI device information and
1079 * OS network device settings (MTU size).
1082 static int __devinit
1083 e1000_sw_init(struct e1000_adapter
*adapter
)
1085 struct e1000_hw
*hw
= &adapter
->hw
;
1086 struct net_device
*netdev
= adapter
->netdev
;
1087 struct pci_dev
*pdev
= adapter
->pdev
;
1088 #ifdef CONFIG_E1000_NAPI
1092 /* PCI config space info */
1094 hw
->vendor_id
= pdev
->vendor
;
1095 hw
->device_id
= pdev
->device
;
1096 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1097 hw
->subsystem_id
= pdev
->subsystem_device
;
1099 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1101 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1103 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
1104 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1105 hw
->max_frame_size
= netdev
->mtu
+
1106 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1107 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1109 /* identify the MAC */
1111 if (e1000_set_mac_type(hw
)) {
1112 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1116 switch (hw
->mac_type
) {
1121 case e1000_82541_rev_2
:
1122 case e1000_82547_rev_2
:
1123 hw
->phy_init_script
= 1;
1127 e1000_set_media_type(hw
);
1129 hw
->wait_autoneg_complete
= FALSE
;
1130 hw
->tbi_compatibility_en
= TRUE
;
1131 hw
->adaptive_ifs
= TRUE
;
1133 /* Copper options */
1135 if (hw
->media_type
== e1000_media_type_copper
) {
1136 hw
->mdix
= AUTO_ALL_MODES
;
1137 hw
->disable_polarity_correction
= FALSE
;
1138 hw
->master_slave
= E1000_MASTER_SLAVE
;
1141 adapter
->num_tx_queues
= 1;
1142 adapter
->num_rx_queues
= 1;
1144 if (e1000_alloc_queues(adapter
)) {
1145 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1149 #ifdef CONFIG_E1000_NAPI
1150 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1151 adapter
->polling_netdev
[i
].priv
= adapter
;
1152 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1153 adapter
->polling_netdev
[i
].weight
= 64;
1154 dev_hold(&adapter
->polling_netdev
[i
]);
1155 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1157 spin_lock_init(&adapter
->tx_queue_lock
);
1160 atomic_set(&adapter
->irq_sem
, 1);
1161 spin_lock_init(&adapter
->stats_lock
);
1167 * e1000_alloc_queues - Allocate memory for all rings
1168 * @adapter: board private structure to initialize
1170 * We allocate one ring per queue at run-time since we don't know the
1171 * number of queues at compile-time. The polling_netdev array is
1172 * intended for Multiqueue, but should work fine with a single queue.
1175 static int __devinit
1176 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1180 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1181 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1182 if (!adapter
->tx_ring
)
1184 memset(adapter
->tx_ring
, 0, size
);
1186 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1187 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1188 if (!adapter
->rx_ring
) {
1189 kfree(adapter
->tx_ring
);
1192 memset(adapter
->rx_ring
, 0, size
);
1194 #ifdef CONFIG_E1000_NAPI
1195 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1196 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1197 if (!adapter
->polling_netdev
) {
1198 kfree(adapter
->tx_ring
);
1199 kfree(adapter
->rx_ring
);
1202 memset(adapter
->polling_netdev
, 0, size
);
1205 return E1000_SUCCESS
;
1209 * e1000_open - Called when a network interface is made active
1210 * @netdev: network interface device structure
1212 * Returns 0 on success, negative value on failure
1214 * The open entry point is called when a network interface is made
1215 * active by the system (IFF_UP). At this point all resources needed
1216 * for transmit and receive operations are allocated, the interrupt
1217 * handler is registered with the OS, the watchdog timer is started,
1218 * and the stack is notified that the interface is ready.
1222 e1000_open(struct net_device
*netdev
)
1224 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1227 /* disallow open during test */
1228 if (test_bit(__E1000_DRIVER_TESTING
, &adapter
->flags
))
1231 /* allocate transmit descriptors */
1233 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1236 /* allocate receive descriptors */
1238 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1241 err
= e1000_request_irq(adapter
);
1245 e1000_power_up_phy(adapter
);
1247 if ((err
= e1000_up(adapter
)))
1249 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1250 if ((adapter
->hw
.mng_cookie
.status
&
1251 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1252 e1000_update_mng_vlan(adapter
);
1255 /* If AMT is enabled, let the firmware know that the network
1256 * interface is now open */
1257 if (adapter
->hw
.mac_type
== e1000_82573
&&
1258 e1000_check_mng_mode(&adapter
->hw
))
1259 e1000_get_hw_control(adapter
);
1261 return E1000_SUCCESS
;
1264 e1000_power_down_phy(adapter
);
1265 e1000_free_irq(adapter
);
1267 e1000_free_all_rx_resources(adapter
);
1269 e1000_free_all_tx_resources(adapter
);
1271 e1000_reset(adapter
);
1277 * e1000_close - Disables a network interface
1278 * @netdev: network interface device structure
1280 * Returns 0, this is not allowed to fail
1282 * The close entry point is called when an interface is de-activated
1283 * by the OS. The hardware is still under the drivers control, but
1284 * needs to be disabled. A global MAC reset is issued to stop the
1285 * hardware, and all transmit and receive resources are freed.
1289 e1000_close(struct net_device
*netdev
)
1291 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1293 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1294 e1000_down(adapter
);
1295 e1000_power_down_phy(adapter
);
1296 e1000_free_irq(adapter
);
1298 e1000_free_all_tx_resources(adapter
);
1299 e1000_free_all_rx_resources(adapter
);
1301 if ((adapter
->hw
.mng_cookie
.status
&
1302 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1303 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1306 /* If AMT is enabled, let the firmware know that the network
1307 * interface is now closed */
1308 if (adapter
->hw
.mac_type
== e1000_82573
&&
1309 e1000_check_mng_mode(&adapter
->hw
))
1310 e1000_release_hw_control(adapter
);
1316 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1317 * @adapter: address of board private structure
1318 * @start: address of beginning of memory
1319 * @len: length of memory
1322 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1323 void *start
, unsigned long len
)
1325 unsigned long begin
= (unsigned long) start
;
1326 unsigned long end
= begin
+ len
;
1328 /* First rev 82545 and 82546 need to not allow any memory
1329 * write location to cross 64k boundary due to errata 23 */
1330 if (adapter
->hw
.mac_type
== e1000_82545
||
1331 adapter
->hw
.mac_type
== e1000_82546
) {
1332 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1339 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1340 * @adapter: board private structure
1341 * @txdr: tx descriptor ring (for a specific queue) to setup
1343 * Return 0 on success, negative on failure
1347 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1348 struct e1000_tx_ring
*txdr
)
1350 struct pci_dev
*pdev
= adapter
->pdev
;
1353 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1354 txdr
->buffer_info
= vmalloc(size
);
1355 if (!txdr
->buffer_info
) {
1357 "Unable to allocate memory for the transmit descriptor ring\n");
1360 memset(txdr
->buffer_info
, 0, size
);
1362 /* round up to nearest 4K */
1364 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1365 E1000_ROUNDUP(txdr
->size
, 4096);
1367 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1370 vfree(txdr
->buffer_info
);
1372 "Unable to allocate memory for the transmit descriptor ring\n");
1376 /* Fix for errata 23, can't cross 64kB boundary */
1377 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1378 void *olddesc
= txdr
->desc
;
1379 dma_addr_t olddma
= txdr
->dma
;
1380 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1381 "at %p\n", txdr
->size
, txdr
->desc
);
1382 /* Try again, without freeing the previous */
1383 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1384 /* Failed allocation, critical failure */
1386 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1387 goto setup_tx_desc_die
;
1390 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1392 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1394 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1396 "Unable to allocate aligned memory "
1397 "for the transmit descriptor ring\n");
1398 vfree(txdr
->buffer_info
);
1401 /* Free old allocation, new allocation was successful */
1402 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1405 memset(txdr
->desc
, 0, txdr
->size
);
1407 txdr
->next_to_use
= 0;
1408 txdr
->next_to_clean
= 0;
1409 spin_lock_init(&txdr
->tx_lock
);
1415 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1416 * (Descriptors) for all queues
1417 * @adapter: board private structure
1419 * Return 0 on success, negative on failure
1423 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1427 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1428 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1431 "Allocation for Tx Queue %u failed\n", i
);
1432 for (i
-- ; i
>= 0; i
--)
1433 e1000_free_tx_resources(adapter
,
1434 &adapter
->tx_ring
[i
]);
1443 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1444 * @adapter: board private structure
1446 * Configure the Tx unit of the MAC after a reset.
1450 e1000_configure_tx(struct e1000_adapter
*adapter
)
1453 struct e1000_hw
*hw
= &adapter
->hw
;
1454 uint32_t tdlen
, tctl
, tipg
, tarc
;
1455 uint32_t ipgr1
, ipgr2
;
1457 /* Setup the HW Tx Head and Tail descriptor pointers */
1459 switch (adapter
->num_tx_queues
) {
1462 tdba
= adapter
->tx_ring
[0].dma
;
1463 tdlen
= adapter
->tx_ring
[0].count
*
1464 sizeof(struct e1000_tx_desc
);
1465 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1466 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1467 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1468 E1000_WRITE_REG(hw
, TDT
, 0);
1469 E1000_WRITE_REG(hw
, TDH
, 0);
1470 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1471 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1475 /* Set the default values for the Tx Inter Packet Gap timer */
1477 if (hw
->media_type
== e1000_media_type_fiber
||
1478 hw
->media_type
== e1000_media_type_internal_serdes
)
1479 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1481 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1483 switch (hw
->mac_type
) {
1484 case e1000_82542_rev2_0
:
1485 case e1000_82542_rev2_1
:
1486 tipg
= DEFAULT_82542_TIPG_IPGT
;
1487 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1488 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1490 case e1000_80003es2lan
:
1491 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1492 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1495 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1496 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1499 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1500 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1501 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1503 /* Set the Tx Interrupt Delay register */
1505 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1506 if (hw
->mac_type
>= e1000_82540
)
1507 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1509 /* Program the Transmit Control Register */
1511 tctl
= E1000_READ_REG(hw
, TCTL
);
1513 tctl
&= ~E1000_TCTL_CT
;
1514 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1515 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1518 /* disable Multiple Reads for debugging */
1519 tctl
&= ~E1000_TCTL_MULR
;
1522 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1523 tarc
= E1000_READ_REG(hw
, TARC0
);
1524 tarc
|= ((1 << 25) | (1 << 21));
1525 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1526 tarc
= E1000_READ_REG(hw
, TARC1
);
1528 if (tctl
& E1000_TCTL_MULR
)
1532 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1533 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1534 tarc
= E1000_READ_REG(hw
, TARC0
);
1536 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1537 tarc
= E1000_READ_REG(hw
, TARC1
);
1539 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1542 e1000_config_collision_dist(hw
);
1544 /* Setup Transmit Descriptor Settings for eop descriptor */
1545 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1548 if (hw
->mac_type
< e1000_82543
)
1549 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1551 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1553 /* Cache if we're 82544 running in PCI-X because we'll
1554 * need this to apply a workaround later in the send path. */
1555 if (hw
->mac_type
== e1000_82544
&&
1556 hw
->bus_type
== e1000_bus_type_pcix
)
1557 adapter
->pcix_82544
= 1;
1559 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1564 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1565 * @adapter: board private structure
1566 * @rxdr: rx descriptor ring (for a specific queue) to setup
1568 * Returns 0 on success, negative on failure
1572 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1573 struct e1000_rx_ring
*rxdr
)
1575 struct pci_dev
*pdev
= adapter
->pdev
;
1578 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1579 rxdr
->buffer_info
= vmalloc(size
);
1580 if (!rxdr
->buffer_info
) {
1582 "Unable to allocate memory for the receive descriptor ring\n");
1585 memset(rxdr
->buffer_info
, 0, size
);
1587 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1588 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1589 if (!rxdr
->ps_page
) {
1590 vfree(rxdr
->buffer_info
);
1592 "Unable to allocate memory for the receive descriptor ring\n");
1595 memset(rxdr
->ps_page
, 0, size
);
1597 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1598 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1599 if (!rxdr
->ps_page_dma
) {
1600 vfree(rxdr
->buffer_info
);
1601 kfree(rxdr
->ps_page
);
1603 "Unable to allocate memory for the receive descriptor ring\n");
1606 memset(rxdr
->ps_page_dma
, 0, size
);
1608 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1609 desc_len
= sizeof(struct e1000_rx_desc
);
1611 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1613 /* Round up to nearest 4K */
1615 rxdr
->size
= rxdr
->count
* desc_len
;
1616 E1000_ROUNDUP(rxdr
->size
, 4096);
1618 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1622 "Unable to allocate memory for the receive descriptor ring\n");
1624 vfree(rxdr
->buffer_info
);
1625 kfree(rxdr
->ps_page
);
1626 kfree(rxdr
->ps_page_dma
);
1630 /* Fix for errata 23, can't cross 64kB boundary */
1631 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1632 void *olddesc
= rxdr
->desc
;
1633 dma_addr_t olddma
= rxdr
->dma
;
1634 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1635 "at %p\n", rxdr
->size
, rxdr
->desc
);
1636 /* Try again, without freeing the previous */
1637 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1638 /* Failed allocation, critical failure */
1640 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1642 "Unable to allocate memory "
1643 "for the receive descriptor ring\n");
1644 goto setup_rx_desc_die
;
1647 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1649 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1651 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1653 "Unable to allocate aligned memory "
1654 "for the receive descriptor ring\n");
1655 goto setup_rx_desc_die
;
1657 /* Free old allocation, new allocation was successful */
1658 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1661 memset(rxdr
->desc
, 0, rxdr
->size
);
1663 rxdr
->next_to_clean
= 0;
1664 rxdr
->next_to_use
= 0;
1670 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1671 * (Descriptors) for all queues
1672 * @adapter: board private structure
1674 * Return 0 on success, negative on failure
1678 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1682 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1683 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1686 "Allocation for Rx Queue %u failed\n", i
);
1687 for (i
-- ; i
>= 0; i
--)
1688 e1000_free_rx_resources(adapter
,
1689 &adapter
->rx_ring
[i
]);
1698 * e1000_setup_rctl - configure the receive control registers
1699 * @adapter: Board private structure
1701 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1702 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1704 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1706 uint32_t rctl
, rfctl
;
1707 uint32_t psrctl
= 0;
1708 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1712 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1714 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1716 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1717 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1718 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1720 if (adapter
->hw
.tbi_compatibility_on
== 1)
1721 rctl
|= E1000_RCTL_SBP
;
1723 rctl
&= ~E1000_RCTL_SBP
;
1725 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1726 rctl
&= ~E1000_RCTL_LPE
;
1728 rctl
|= E1000_RCTL_LPE
;
1730 /* Setup buffer sizes */
1731 rctl
&= ~E1000_RCTL_SZ_4096
;
1732 rctl
|= E1000_RCTL_BSEX
;
1733 switch (adapter
->rx_buffer_len
) {
1734 case E1000_RXBUFFER_256
:
1735 rctl
|= E1000_RCTL_SZ_256
;
1736 rctl
&= ~E1000_RCTL_BSEX
;
1738 case E1000_RXBUFFER_512
:
1739 rctl
|= E1000_RCTL_SZ_512
;
1740 rctl
&= ~E1000_RCTL_BSEX
;
1742 case E1000_RXBUFFER_1024
:
1743 rctl
|= E1000_RCTL_SZ_1024
;
1744 rctl
&= ~E1000_RCTL_BSEX
;
1746 case E1000_RXBUFFER_2048
:
1748 rctl
|= E1000_RCTL_SZ_2048
;
1749 rctl
&= ~E1000_RCTL_BSEX
;
1751 case E1000_RXBUFFER_4096
:
1752 rctl
|= E1000_RCTL_SZ_4096
;
1754 case E1000_RXBUFFER_8192
:
1755 rctl
|= E1000_RCTL_SZ_8192
;
1757 case E1000_RXBUFFER_16384
:
1758 rctl
|= E1000_RCTL_SZ_16384
;
1762 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1763 /* 82571 and greater support packet-split where the protocol
1764 * header is placed in skb->data and the packet data is
1765 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1766 * In the case of a non-split, skb->data is linearly filled,
1767 * followed by the page buffers. Therefore, skb->data is
1768 * sized to hold the largest protocol header.
1770 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1771 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1773 adapter
->rx_ps_pages
= pages
;
1775 adapter
->rx_ps_pages
= 0;
1777 if (adapter
->rx_ps_pages
) {
1778 /* Configure extra packet-split registers */
1779 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1780 rfctl
|= E1000_RFCTL_EXTEN
;
1781 /* disable IPv6 packet split support */
1782 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1783 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1785 rctl
|= E1000_RCTL_DTYP_PS
;
1787 psrctl
|= adapter
->rx_ps_bsize0
>>
1788 E1000_PSRCTL_BSIZE0_SHIFT
;
1790 switch (adapter
->rx_ps_pages
) {
1792 psrctl
|= PAGE_SIZE
<<
1793 E1000_PSRCTL_BSIZE3_SHIFT
;
1795 psrctl
|= PAGE_SIZE
<<
1796 E1000_PSRCTL_BSIZE2_SHIFT
;
1798 psrctl
|= PAGE_SIZE
>>
1799 E1000_PSRCTL_BSIZE1_SHIFT
;
1803 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1806 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1810 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1811 * @adapter: board private structure
1813 * Configure the Rx unit of the MAC after a reset.
1817 e1000_configure_rx(struct e1000_adapter
*adapter
)
1820 struct e1000_hw
*hw
= &adapter
->hw
;
1821 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1823 if (adapter
->rx_ps_pages
) {
1824 /* this is a 32 byte descriptor */
1825 rdlen
= adapter
->rx_ring
[0].count
*
1826 sizeof(union e1000_rx_desc_packet_split
);
1827 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1828 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1830 rdlen
= adapter
->rx_ring
[0].count
*
1831 sizeof(struct e1000_rx_desc
);
1832 adapter
->clean_rx
= e1000_clean_rx_irq
;
1833 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1836 /* disable receives while setting up the descriptors */
1837 rctl
= E1000_READ_REG(hw
, RCTL
);
1838 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1840 /* set the Receive Delay Timer Register */
1841 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1843 if (hw
->mac_type
>= e1000_82540
) {
1844 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1845 if (adapter
->itr
> 1)
1846 E1000_WRITE_REG(hw
, ITR
,
1847 1000000000 / (adapter
->itr
* 256));
1850 if (hw
->mac_type
>= e1000_82571
) {
1851 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1852 /* Reset delay timers after every interrupt */
1853 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1854 #ifdef CONFIG_E1000_NAPI
1855 /* Auto-Mask interrupts upon ICR read. */
1856 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1858 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1859 E1000_WRITE_REG(hw
, IAM
, ~0);
1860 E1000_WRITE_FLUSH(hw
);
1863 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1864 * the Base and Length of the Rx Descriptor Ring */
1865 switch (adapter
->num_rx_queues
) {
1868 rdba
= adapter
->rx_ring
[0].dma
;
1869 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1870 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1871 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1872 E1000_WRITE_REG(hw
, RDT
, 0);
1873 E1000_WRITE_REG(hw
, RDH
, 0);
1874 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1875 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1879 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1880 if (hw
->mac_type
>= e1000_82543
) {
1881 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1882 if (adapter
->rx_csum
== TRUE
) {
1883 rxcsum
|= E1000_RXCSUM_TUOFL
;
1885 /* Enable 82571 IPv4 payload checksum for UDP fragments
1886 * Must be used in conjunction with packet-split. */
1887 if ((hw
->mac_type
>= e1000_82571
) &&
1888 (adapter
->rx_ps_pages
)) {
1889 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1892 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1893 /* don't need to clear IPPCSE as it defaults to 0 */
1895 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1898 /* Enable Receives */
1899 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1903 * e1000_free_tx_resources - Free Tx Resources per Queue
1904 * @adapter: board private structure
1905 * @tx_ring: Tx descriptor ring for a specific queue
1907 * Free all transmit software resources
1911 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1912 struct e1000_tx_ring
*tx_ring
)
1914 struct pci_dev
*pdev
= adapter
->pdev
;
1916 e1000_clean_tx_ring(adapter
, tx_ring
);
1918 vfree(tx_ring
->buffer_info
);
1919 tx_ring
->buffer_info
= NULL
;
1921 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1923 tx_ring
->desc
= NULL
;
1927 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1928 * @adapter: board private structure
1930 * Free all transmit software resources
1934 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1938 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1939 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1943 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1944 struct e1000_buffer
*buffer_info
)
1946 if (buffer_info
->dma
) {
1947 pci_unmap_page(adapter
->pdev
,
1949 buffer_info
->length
,
1952 if (buffer_info
->skb
)
1953 dev_kfree_skb_any(buffer_info
->skb
);
1954 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1958 * e1000_clean_tx_ring - Free Tx Buffers
1959 * @adapter: board private structure
1960 * @tx_ring: ring to be cleaned
1964 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1965 struct e1000_tx_ring
*tx_ring
)
1967 struct e1000_buffer
*buffer_info
;
1971 /* Free all the Tx ring sk_buffs */
1973 for (i
= 0; i
< tx_ring
->count
; i
++) {
1974 buffer_info
= &tx_ring
->buffer_info
[i
];
1975 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1978 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1979 memset(tx_ring
->buffer_info
, 0, size
);
1981 /* Zero out the descriptor ring */
1983 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1985 tx_ring
->next_to_use
= 0;
1986 tx_ring
->next_to_clean
= 0;
1987 tx_ring
->last_tx_tso
= 0;
1989 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1990 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1994 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1995 * @adapter: board private structure
1999 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
2003 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
2004 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
2008 * e1000_free_rx_resources - Free Rx Resources
2009 * @adapter: board private structure
2010 * @rx_ring: ring to clean the resources from
2012 * Free all receive software resources
2016 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
2017 struct e1000_rx_ring
*rx_ring
)
2019 struct pci_dev
*pdev
= adapter
->pdev
;
2021 e1000_clean_rx_ring(adapter
, rx_ring
);
2023 vfree(rx_ring
->buffer_info
);
2024 rx_ring
->buffer_info
= NULL
;
2025 kfree(rx_ring
->ps_page
);
2026 rx_ring
->ps_page
= NULL
;
2027 kfree(rx_ring
->ps_page_dma
);
2028 rx_ring
->ps_page_dma
= NULL
;
2030 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
2032 rx_ring
->desc
= NULL
;
2036 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
2037 * @adapter: board private structure
2039 * Free all receive software resources
2043 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
2047 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2048 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
2052 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2053 * @adapter: board private structure
2054 * @rx_ring: ring to free buffers from
2058 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2059 struct e1000_rx_ring
*rx_ring
)
2061 struct e1000_buffer
*buffer_info
;
2062 struct e1000_ps_page
*ps_page
;
2063 struct e1000_ps_page_dma
*ps_page_dma
;
2064 struct pci_dev
*pdev
= adapter
->pdev
;
2068 /* Free all the Rx ring sk_buffs */
2069 for (i
= 0; i
< rx_ring
->count
; i
++) {
2070 buffer_info
= &rx_ring
->buffer_info
[i
];
2071 if (buffer_info
->skb
) {
2072 pci_unmap_single(pdev
,
2074 buffer_info
->length
,
2075 PCI_DMA_FROMDEVICE
);
2077 dev_kfree_skb(buffer_info
->skb
);
2078 buffer_info
->skb
= NULL
;
2080 ps_page
= &rx_ring
->ps_page
[i
];
2081 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2082 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2083 if (!ps_page
->ps_page
[j
]) break;
2084 pci_unmap_page(pdev
,
2085 ps_page_dma
->ps_page_dma
[j
],
2086 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2087 ps_page_dma
->ps_page_dma
[j
] = 0;
2088 put_page(ps_page
->ps_page
[j
]);
2089 ps_page
->ps_page
[j
] = NULL
;
2093 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2094 memset(rx_ring
->buffer_info
, 0, size
);
2095 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2096 memset(rx_ring
->ps_page
, 0, size
);
2097 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2098 memset(rx_ring
->ps_page_dma
, 0, size
);
2100 /* Zero out the descriptor ring */
2102 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2104 rx_ring
->next_to_clean
= 0;
2105 rx_ring
->next_to_use
= 0;
2107 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2108 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2112 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2113 * @adapter: board private structure
2117 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2121 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2122 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2125 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2126 * and memory write and invalidate disabled for certain operations
2129 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2131 struct net_device
*netdev
= adapter
->netdev
;
2134 e1000_pci_clear_mwi(&adapter
->hw
);
2136 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2137 rctl
|= E1000_RCTL_RST
;
2138 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2139 E1000_WRITE_FLUSH(&adapter
->hw
);
2142 if (netif_running(netdev
))
2143 e1000_clean_all_rx_rings(adapter
);
2147 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2149 struct net_device
*netdev
= adapter
->netdev
;
2152 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2153 rctl
&= ~E1000_RCTL_RST
;
2154 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2155 E1000_WRITE_FLUSH(&adapter
->hw
);
2158 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2159 e1000_pci_set_mwi(&adapter
->hw
);
2161 if (netif_running(netdev
)) {
2162 /* No need to loop, because 82542 supports only 1 queue */
2163 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2164 e1000_configure_rx(adapter
);
2165 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2170 * e1000_set_mac - Change the Ethernet Address of the NIC
2171 * @netdev: network interface device structure
2172 * @p: pointer to an address structure
2174 * Returns 0 on success, negative on failure
2178 e1000_set_mac(struct net_device
*netdev
, void *p
)
2180 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2181 struct sockaddr
*addr
= p
;
2183 if (!is_valid_ether_addr(addr
->sa_data
))
2184 return -EADDRNOTAVAIL
;
2186 /* 82542 2.0 needs to be in reset to write receive address registers */
2188 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2189 e1000_enter_82542_rst(adapter
);
2191 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2192 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2194 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2196 /* With 82571 controllers, LAA may be overwritten (with the default)
2197 * due to controller reset from the other port. */
2198 if (adapter
->hw
.mac_type
== e1000_82571
) {
2199 /* activate the work around */
2200 adapter
->hw
.laa_is_present
= 1;
2202 /* Hold a copy of the LAA in RAR[14] This is done so that
2203 * between the time RAR[0] gets clobbered and the time it
2204 * gets fixed (in e1000_watchdog), the actual LAA is in one
2205 * of the RARs and no incoming packets directed to this port
2206 * are dropped. Eventaully the LAA will be in RAR[0] and
2208 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2209 E1000_RAR_ENTRIES
- 1);
2212 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2213 e1000_leave_82542_rst(adapter
);
2219 * e1000_set_multi - Multicast and Promiscuous mode set
2220 * @netdev: network interface device structure
2222 * The set_multi entry point is called whenever the multicast address
2223 * list or the network interface flags are updated. This routine is
2224 * responsible for configuring the hardware for proper multicast,
2225 * promiscuous mode, and all-multi behavior.
2229 e1000_set_multi(struct net_device
*netdev
)
2231 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2232 struct e1000_hw
*hw
= &adapter
->hw
;
2233 struct dev_mc_list
*mc_ptr
;
2235 uint32_t hash_value
;
2236 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2237 int mta_reg_count
= (hw
->mac_type
== e1000_ich8lan
) ?
2238 E1000_NUM_MTA_REGISTERS_ICH8LAN
:
2239 E1000_NUM_MTA_REGISTERS
;
2241 if (adapter
->hw
.mac_type
== e1000_ich8lan
)
2242 rar_entries
= E1000_RAR_ENTRIES_ICH8LAN
;
2244 /* reserve RAR[14] for LAA over-write work-around */
2245 if (adapter
->hw
.mac_type
== e1000_82571
)
2248 /* Check for Promiscuous and All Multicast modes */
2250 rctl
= E1000_READ_REG(hw
, RCTL
);
2252 if (netdev
->flags
& IFF_PROMISC
) {
2253 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2254 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2255 rctl
|= E1000_RCTL_MPE
;
2256 rctl
&= ~E1000_RCTL_UPE
;
2258 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2261 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2263 /* 82542 2.0 needs to be in reset to write receive address registers */
2265 if (hw
->mac_type
== e1000_82542_rev2_0
)
2266 e1000_enter_82542_rst(adapter
);
2268 /* load the first 14 multicast address into the exact filters 1-14
2269 * RAR 0 is used for the station MAC adddress
2270 * if there are not 14 addresses, go ahead and clear the filters
2271 * -- with 82571 controllers only 0-13 entries are filled here
2273 mc_ptr
= netdev
->mc_list
;
2275 for (i
= 1; i
< rar_entries
; i
++) {
2277 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2278 mc_ptr
= mc_ptr
->next
;
2280 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2281 E1000_WRITE_FLUSH(hw
);
2282 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2283 E1000_WRITE_FLUSH(hw
);
2287 /* clear the old settings from the multicast hash table */
2289 for (i
= 0; i
< mta_reg_count
; i
++) {
2290 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2291 E1000_WRITE_FLUSH(hw
);
2294 /* load any remaining addresses into the hash table */
2296 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2297 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2298 e1000_mta_set(hw
, hash_value
);
2301 if (hw
->mac_type
== e1000_82542_rev2_0
)
2302 e1000_leave_82542_rst(adapter
);
2305 /* Need to wait a few seconds after link up to get diagnostic information from
2309 e1000_update_phy_info(unsigned long data
)
2311 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2312 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2316 * e1000_82547_tx_fifo_stall - Timer Call-back
2317 * @data: pointer to adapter cast into an unsigned long
2321 e1000_82547_tx_fifo_stall(unsigned long data
)
2323 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2324 struct net_device
*netdev
= adapter
->netdev
;
2327 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2328 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2329 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2330 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2331 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2332 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2333 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2334 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2335 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2336 tctl
& ~E1000_TCTL_EN
);
2337 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2338 adapter
->tx_head_addr
);
2339 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2340 adapter
->tx_head_addr
);
2341 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2342 adapter
->tx_head_addr
);
2343 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2344 adapter
->tx_head_addr
);
2345 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2346 E1000_WRITE_FLUSH(&adapter
->hw
);
2348 adapter
->tx_fifo_head
= 0;
2349 atomic_set(&adapter
->tx_fifo_stall
, 0);
2350 netif_wake_queue(netdev
);
2352 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2358 * e1000_watchdog - Timer Call-back
2359 * @data: pointer to adapter cast into an unsigned long
2362 e1000_watchdog(unsigned long data
)
2364 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2365 struct net_device
*netdev
= adapter
->netdev
;
2366 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2367 uint32_t link
, tctl
;
2370 ret_val
= e1000_check_for_link(&adapter
->hw
);
2371 if ((ret_val
== E1000_ERR_PHY
) &&
2372 (adapter
->hw
.phy_type
== e1000_phy_igp_3
) &&
2373 (E1000_READ_REG(&adapter
->hw
, CTRL
) & E1000_PHY_CTRL_GBE_DISABLE
)) {
2374 /* See e1000_kumeran_lock_loss_workaround() */
2376 "Gigabit has been disabled, downgrading speed\n");
2378 if (adapter
->hw
.mac_type
== e1000_82573
) {
2379 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2380 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2381 e1000_update_mng_vlan(adapter
);
2384 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2385 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2386 link
= !adapter
->hw
.serdes_link_down
;
2388 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2391 if (!netif_carrier_ok(netdev
)) {
2392 boolean_t txb2b
= 1;
2393 e1000_get_speed_and_duplex(&adapter
->hw
,
2394 &adapter
->link_speed
,
2395 &adapter
->link_duplex
);
2397 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2398 adapter
->link_speed
,
2399 adapter
->link_duplex
== FULL_DUPLEX
?
2400 "Full Duplex" : "Half Duplex");
2402 /* tweak tx_queue_len according to speed/duplex
2403 * and adjust the timeout factor */
2404 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2405 adapter
->tx_timeout_factor
= 1;
2406 switch (adapter
->link_speed
) {
2409 netdev
->tx_queue_len
= 10;
2410 adapter
->tx_timeout_factor
= 8;
2414 netdev
->tx_queue_len
= 100;
2415 /* maybe add some timeout factor ? */
2419 if ((adapter
->hw
.mac_type
== e1000_82571
||
2420 adapter
->hw
.mac_type
== e1000_82572
) &&
2422 #define SPEED_MODE_BIT (1 << 21)
2424 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2425 tarc0
&= ~SPEED_MODE_BIT
;
2426 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2430 /* disable TSO for pcie and 10/100 speeds, to avoid
2431 * some hardware issues */
2432 if (!adapter
->tso_force
&&
2433 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2434 switch (adapter
->link_speed
) {
2438 "10/100 speed: disabling TSO\n");
2439 netdev
->features
&= ~NETIF_F_TSO
;
2442 netdev
->features
|= NETIF_F_TSO
;
2451 /* enable transmits in the hardware, need to do this
2452 * after setting TARC0 */
2453 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2454 tctl
|= E1000_TCTL_EN
;
2455 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2457 netif_carrier_on(netdev
);
2458 netif_wake_queue(netdev
);
2459 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2460 adapter
->smartspeed
= 0;
2463 if (netif_carrier_ok(netdev
)) {
2464 adapter
->link_speed
= 0;
2465 adapter
->link_duplex
= 0;
2466 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2467 netif_carrier_off(netdev
);
2468 netif_stop_queue(netdev
);
2469 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2471 /* 80003ES2LAN workaround--
2472 * For packet buffer work-around on link down event;
2473 * disable receives in the ISR and
2474 * reset device here in the watchdog
2476 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
2478 schedule_work(&adapter
->reset_task
);
2481 e1000_smartspeed(adapter
);
2484 e1000_update_stats(adapter
);
2486 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2487 adapter
->tpt_old
= adapter
->stats
.tpt
;
2488 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2489 adapter
->colc_old
= adapter
->stats
.colc
;
2491 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2492 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2493 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2494 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2496 e1000_update_adaptive(&adapter
->hw
);
2498 if (!netif_carrier_ok(netdev
)) {
2499 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2500 /* We've lost link, so the controller stops DMA,
2501 * but we've got queued Tx work that's never going
2502 * to get done, so reset controller to flush Tx.
2503 * (Do the reset outside of interrupt context). */
2504 adapter
->tx_timeout_count
++;
2505 schedule_work(&adapter
->reset_task
);
2509 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2510 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2511 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2512 * asymmetrical Tx or Rx gets ITR=8000; everyone
2513 * else is between 2000-8000. */
2514 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2515 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2516 adapter
->gotcl
- adapter
->gorcl
:
2517 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2518 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2519 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2522 /* Cause software interrupt to ensure rx ring is cleaned */
2523 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2525 /* Force detection of hung controller every watchdog period */
2526 adapter
->detect_tx_hung
= TRUE
;
2528 /* With 82571 controllers, LAA may be overwritten due to controller
2529 * reset from the other port. Set the appropriate LAA in RAR[0] */
2530 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2531 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2533 /* Reset the timer */
2534 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2537 #define E1000_TX_FLAGS_CSUM 0x00000001
2538 #define E1000_TX_FLAGS_VLAN 0x00000002
2539 #define E1000_TX_FLAGS_TSO 0x00000004
2540 #define E1000_TX_FLAGS_IPV4 0x00000008
2541 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2542 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2545 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2546 struct sk_buff
*skb
)
2549 struct e1000_context_desc
*context_desc
;
2550 struct e1000_buffer
*buffer_info
;
2552 uint32_t cmd_length
= 0;
2553 uint16_t ipcse
= 0, tucse
, mss
;
2554 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2557 if (skb_is_gso(skb
)) {
2558 if (skb_header_cloned(skb
)) {
2559 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2564 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2565 mss
= skb_shinfo(skb
)->gso_size
;
2566 if (skb
->protocol
== htons(ETH_P_IP
)) {
2567 skb
->nh
.iph
->tot_len
= 0;
2568 skb
->nh
.iph
->check
= 0;
2570 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2575 cmd_length
= E1000_TXD_CMD_IP
;
2576 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2577 #ifdef NETIF_F_TSO_IPV6
2578 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
2579 skb
->nh
.ipv6h
->payload_len
= 0;
2581 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2582 &skb
->nh
.ipv6h
->daddr
,
2589 ipcss
= skb
->nh
.raw
- skb
->data
;
2590 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2591 tucss
= skb
->h
.raw
- skb
->data
;
2592 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2595 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2596 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2598 i
= tx_ring
->next_to_use
;
2599 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2600 buffer_info
= &tx_ring
->buffer_info
[i
];
2602 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2603 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2604 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2605 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2606 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2607 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2608 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2609 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2610 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2612 buffer_info
->time_stamp
= jiffies
;
2614 if (++i
== tx_ring
->count
) i
= 0;
2615 tx_ring
->next_to_use
= i
;
2625 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2626 struct sk_buff
*skb
)
2628 struct e1000_context_desc
*context_desc
;
2629 struct e1000_buffer
*buffer_info
;
2633 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2634 css
= skb
->h
.raw
- skb
->data
;
2636 i
= tx_ring
->next_to_use
;
2637 buffer_info
= &tx_ring
->buffer_info
[i
];
2638 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2640 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2641 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2642 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2643 context_desc
->tcp_seg_setup
.data
= 0;
2644 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2646 buffer_info
->time_stamp
= jiffies
;
2648 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2649 tx_ring
->next_to_use
= i
;
2657 #define E1000_MAX_TXD_PWR 12
2658 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2661 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2662 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2663 unsigned int nr_frags
, unsigned int mss
)
2665 struct e1000_buffer
*buffer_info
;
2666 unsigned int len
= skb
->len
;
2667 unsigned int offset
= 0, size
, count
= 0, i
;
2669 len
-= skb
->data_len
;
2671 i
= tx_ring
->next_to_use
;
2674 buffer_info
= &tx_ring
->buffer_info
[i
];
2675 size
= min(len
, max_per_txd
);
2677 /* Workaround for Controller erratum --
2678 * descriptor for non-tso packet in a linear SKB that follows a
2679 * tso gets written back prematurely before the data is fully
2680 * DMA'd to the controller */
2681 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2683 tx_ring
->last_tx_tso
= 0;
2687 /* Workaround for premature desc write-backs
2688 * in TSO mode. Append 4-byte sentinel desc */
2689 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2692 /* work-around for errata 10 and it applies
2693 * to all controllers in PCI-X mode
2694 * The fix is to make sure that the first descriptor of a
2695 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2697 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2698 (size
> 2015) && count
== 0))
2701 /* Workaround for potential 82544 hang in PCI-X. Avoid
2702 * terminating buffers within evenly-aligned dwords. */
2703 if (unlikely(adapter
->pcix_82544
&&
2704 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2708 buffer_info
->length
= size
;
2710 pci_map_single(adapter
->pdev
,
2714 buffer_info
->time_stamp
= jiffies
;
2719 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2722 for (f
= 0; f
< nr_frags
; f
++) {
2723 struct skb_frag_struct
*frag
;
2725 frag
= &skb_shinfo(skb
)->frags
[f
];
2727 offset
= frag
->page_offset
;
2730 buffer_info
= &tx_ring
->buffer_info
[i
];
2731 size
= min(len
, max_per_txd
);
2733 /* Workaround for premature desc write-backs
2734 * in TSO mode. Append 4-byte sentinel desc */
2735 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2738 /* Workaround for potential 82544 hang in PCI-X.
2739 * Avoid terminating buffers within evenly-aligned
2741 if (unlikely(adapter
->pcix_82544
&&
2742 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2746 buffer_info
->length
= size
;
2748 pci_map_page(adapter
->pdev
,
2753 buffer_info
->time_stamp
= jiffies
;
2758 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2762 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2763 tx_ring
->buffer_info
[i
].skb
= skb
;
2764 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2770 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2771 int tx_flags
, int count
)
2773 struct e1000_tx_desc
*tx_desc
= NULL
;
2774 struct e1000_buffer
*buffer_info
;
2775 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2778 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2779 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2781 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2783 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2784 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2787 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2788 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2789 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2792 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2793 txd_lower
|= E1000_TXD_CMD_VLE
;
2794 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2797 i
= tx_ring
->next_to_use
;
2800 buffer_info
= &tx_ring
->buffer_info
[i
];
2801 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2802 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2803 tx_desc
->lower
.data
=
2804 cpu_to_le32(txd_lower
| buffer_info
->length
);
2805 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2806 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2809 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2811 /* Force memory writes to complete before letting h/w
2812 * know there are new descriptors to fetch. (Only
2813 * applicable for weak-ordered memory model archs,
2814 * such as IA-64). */
2817 tx_ring
->next_to_use
= i
;
2818 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2822 * 82547 workaround to avoid controller hang in half-duplex environment.
2823 * The workaround is to avoid queuing a large packet that would span
2824 * the internal Tx FIFO ring boundary by notifying the stack to resend
2825 * the packet at a later time. This gives the Tx FIFO an opportunity to
2826 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2827 * to the beginning of the Tx FIFO.
2830 #define E1000_FIFO_HDR 0x10
2831 #define E1000_82547_PAD_LEN 0x3E0
2834 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2836 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2837 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2839 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2841 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2842 goto no_fifo_stall_required
;
2844 if (atomic_read(&adapter
->tx_fifo_stall
))
2847 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2848 atomic_set(&adapter
->tx_fifo_stall
, 1);
2852 no_fifo_stall_required
:
2853 adapter
->tx_fifo_head
+= skb_fifo_len
;
2854 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2855 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2859 #define MINIMUM_DHCP_PACKET_SIZE 282
2861 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2863 struct e1000_hw
*hw
= &adapter
->hw
;
2864 uint16_t length
, offset
;
2865 if (vlan_tx_tag_present(skb
)) {
2866 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2867 ( adapter
->hw
.mng_cookie
.status
&
2868 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2871 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2872 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2873 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2874 const struct iphdr
*ip
=
2875 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2876 if (IPPROTO_UDP
== ip
->protocol
) {
2877 struct udphdr
*udp
=
2878 (struct udphdr
*)((uint8_t *)ip
+
2880 if (ntohs(udp
->dest
) == 67) {
2881 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2882 length
= skb
->len
- offset
;
2884 return e1000_mng_write_dhcp_info(hw
,
2894 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2896 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2898 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2899 struct e1000_tx_ring
*tx_ring
;
2900 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2901 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2902 unsigned int tx_flags
= 0;
2903 unsigned int len
= skb
->len
;
2904 unsigned long flags
;
2905 unsigned int nr_frags
= 0;
2906 unsigned int mss
= 0;
2910 len
-= skb
->data_len
;
2912 tx_ring
= adapter
->tx_ring
;
2914 if (unlikely(skb
->len
<= 0)) {
2915 dev_kfree_skb_any(skb
);
2916 return NETDEV_TX_OK
;
2920 mss
= skb_shinfo(skb
)->gso_size
;
2921 /* The controller does a simple calculation to
2922 * make sure there is enough room in the FIFO before
2923 * initiating the DMA for each buffer. The calc is:
2924 * 4 = ceil(buffer len/mss). To make sure we don't
2925 * overrun the FIFO, adjust the max buffer len if mss
2929 max_per_txd
= min(mss
<< 2, max_per_txd
);
2930 max_txd_pwr
= fls(max_per_txd
) - 1;
2932 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2933 * points to just header, pull a few bytes of payload from
2934 * frags into skb->data */
2935 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2936 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2937 switch (adapter
->hw
.mac_type
) {
2938 unsigned int pull_size
;
2943 pull_size
= min((unsigned int)4, skb
->data_len
);
2944 if (!__pskb_pull_tail(skb
, pull_size
)) {
2946 "__pskb_pull_tail failed.\n");
2947 dev_kfree_skb_any(skb
);
2948 return NETDEV_TX_OK
;
2950 len
= skb
->len
- skb
->data_len
;
2959 /* reserve a descriptor for the offload context */
2960 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2964 if (skb
->ip_summed
== CHECKSUM_HW
)
2969 /* Controller Erratum workaround */
2970 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&& !skb_is_gso(skb
))
2974 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2976 if (adapter
->pcix_82544
)
2979 /* work-around for errata 10 and it applies to all controllers
2980 * in PCI-X mode, so add one more descriptor to the count
2982 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2986 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2987 for (f
= 0; f
< nr_frags
; f
++)
2988 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2990 if (adapter
->pcix_82544
)
2994 if (adapter
->hw
.tx_pkt_filtering
&&
2995 (adapter
->hw
.mac_type
== e1000_82573
))
2996 e1000_transfer_dhcp_info(adapter
, skb
);
2998 local_irq_save(flags
);
2999 if (!spin_trylock(&tx_ring
->tx_lock
)) {
3000 /* Collision - tell upper layer to requeue */
3001 local_irq_restore(flags
);
3002 return NETDEV_TX_LOCKED
;
3005 /* need: count + 2 desc gap to keep tail from touching
3006 * head, otherwise try next time */
3007 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
3008 netif_stop_queue(netdev
);
3009 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3010 return NETDEV_TX_BUSY
;
3013 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
3014 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
3015 netif_stop_queue(netdev
);
3016 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
3017 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3018 return NETDEV_TX_BUSY
;
3022 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
3023 tx_flags
|= E1000_TX_FLAGS_VLAN
;
3024 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
3027 first
= tx_ring
->next_to_use
;
3029 tso
= e1000_tso(adapter
, tx_ring
, skb
);
3031 dev_kfree_skb_any(skb
);
3032 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3033 return NETDEV_TX_OK
;
3037 tx_ring
->last_tx_tso
= 1;
3038 tx_flags
|= E1000_TX_FLAGS_TSO
;
3039 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
3040 tx_flags
|= E1000_TX_FLAGS_CSUM
;
3042 /* Old method was to assume IPv4 packet by default if TSO was enabled.
3043 * 82571 hardware supports TSO capabilities for IPv6 as well...
3044 * no longer assume, we must. */
3045 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
3046 tx_flags
|= E1000_TX_FLAGS_IPV4
;
3048 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
3049 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
3050 max_per_txd
, nr_frags
, mss
));
3052 netdev
->trans_start
= jiffies
;
3054 /* Make sure there is space in the ring for the next send. */
3055 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
3056 netif_stop_queue(netdev
);
3058 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
3059 return NETDEV_TX_OK
;
3063 * e1000_tx_timeout - Respond to a Tx Hang
3064 * @netdev: network interface device structure
3068 e1000_tx_timeout(struct net_device
*netdev
)
3070 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3072 /* Do the reset outside of interrupt context */
3073 adapter
->tx_timeout_count
++;
3074 schedule_work(&adapter
->reset_task
);
3078 e1000_reset_task(struct net_device
*netdev
)
3080 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3082 e1000_reinit_locked(adapter
);
3086 * e1000_get_stats - Get System Network Statistics
3087 * @netdev: network interface device structure
3089 * Returns the address of the device statistics structure.
3090 * The statistics are actually updated from the timer callback.
3093 static struct net_device_stats
*
3094 e1000_get_stats(struct net_device
*netdev
)
3096 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3098 /* only return the current stats */
3099 return &adapter
->net_stats
;
3103 * e1000_change_mtu - Change the Maximum Transfer Unit
3104 * @netdev: network interface device structure
3105 * @new_mtu: new value for maximum frame size
3107 * Returns 0 on success, negative on failure
3111 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3113 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3114 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3115 uint16_t eeprom_data
= 0;
3117 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3118 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3119 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3123 /* Adapter-specific max frame size limits. */
3124 switch (adapter
->hw
.mac_type
) {
3125 case e1000_undefined
... e1000_82542_rev2_1
:
3127 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3128 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3133 /* only enable jumbo frames if ASPM is disabled completely
3134 * this means both bits must be zero in 0x1A bits 3:2 */
3135 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3137 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
3138 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3140 "Jumbo Frames not supported.\n");
3145 /* fall through to get support */
3148 case e1000_80003es2lan
:
3149 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3150 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3151 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3156 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3160 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3161 * means we reserve 2 more, this pushes us to allocate from the next
3163 * i.e. RXBUFFER_2048 --> size-4096 slab */
3165 if (max_frame
<= E1000_RXBUFFER_256
)
3166 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3167 else if (max_frame
<= E1000_RXBUFFER_512
)
3168 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3169 else if (max_frame
<= E1000_RXBUFFER_1024
)
3170 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3171 else if (max_frame
<= E1000_RXBUFFER_2048
)
3172 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3173 else if (max_frame
<= E1000_RXBUFFER_4096
)
3174 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3175 else if (max_frame
<= E1000_RXBUFFER_8192
)
3176 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3177 else if (max_frame
<= E1000_RXBUFFER_16384
)
3178 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3180 /* adjust allocation if LPE protects us, and we aren't using SBP */
3181 if (!adapter
->hw
.tbi_compatibility_on
&&
3182 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3183 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3184 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3186 netdev
->mtu
= new_mtu
;
3188 if (netif_running(netdev
))
3189 e1000_reinit_locked(adapter
);
3191 adapter
->hw
.max_frame_size
= max_frame
;
3197 * e1000_update_stats - Update the board statistics counters
3198 * @adapter: board private structure
3202 e1000_update_stats(struct e1000_adapter
*adapter
)
3204 struct e1000_hw
*hw
= &adapter
->hw
;
3205 struct pci_dev
*pdev
= adapter
->pdev
;
3206 unsigned long flags
;
3209 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3212 * Prevent stats update while adapter is being reset, or if the pci
3213 * connection is down.
3215 if (adapter
->link_speed
== 0)
3217 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3220 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3222 /* these counters are modified from e1000_adjust_tbi_stats,
3223 * called from the interrupt context, so they must only
3224 * be written while holding adapter->stats_lock
3227 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3228 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3229 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3230 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3231 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3232 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3233 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3235 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3236 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3237 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3238 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3239 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3240 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3241 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3244 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3245 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3246 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3247 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3248 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3249 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3250 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3251 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3252 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3253 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3254 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3255 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3256 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3257 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3258 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3259 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3260 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3261 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3262 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3263 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3264 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3265 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3266 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3267 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3268 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3269 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3271 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3272 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3273 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3274 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3275 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3276 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3277 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3280 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3281 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3283 /* used for adaptive IFS */
3285 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3286 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3287 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3288 adapter
->stats
.colc
+= hw
->collision_delta
;
3290 if (hw
->mac_type
>= e1000_82543
) {
3291 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3292 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3293 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3294 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3295 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3296 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3298 if (hw
->mac_type
> e1000_82547_rev_2
) {
3299 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3300 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3302 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
3303 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3304 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3305 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3306 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3307 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3308 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3309 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3313 /* Fill out the OS statistics structure */
3315 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3316 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3317 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3318 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3319 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3320 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3324 /* RLEC on some newer hardware can be incorrect so build
3325 * our own version based on RUC and ROC */
3326 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3327 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3328 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3329 adapter
->stats
.cexterr
;
3330 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3332 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3333 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3334 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3338 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3339 adapter
->stats
.latecol
;
3340 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3341 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3342 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3344 /* Tx Dropped needs to be maintained elsewhere */
3348 if (hw
->media_type
== e1000_media_type_copper
) {
3349 if ((adapter
->link_speed
== SPEED_1000
) &&
3350 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3351 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3352 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3355 if ((hw
->mac_type
<= e1000_82546
) &&
3356 (hw
->phy_type
== e1000_phy_m88
) &&
3357 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3358 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3361 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3365 * e1000_intr - Interrupt Handler
3366 * @irq: interrupt number
3367 * @data: pointer to a network interface device structure
3368 * @pt_regs: CPU registers structure
3372 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3374 struct net_device
*netdev
= data
;
3375 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3376 struct e1000_hw
*hw
= &adapter
->hw
;
3377 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3378 #ifndef CONFIG_E1000_NAPI
3381 /* Interrupt Auto-Mask...upon reading ICR,
3382 * interrupts are masked. No need for the
3383 * IMC write, but it does mean we should
3384 * account for it ASAP. */
3385 if (likely(hw
->mac_type
>= e1000_82571
))
3386 atomic_inc(&adapter
->irq_sem
);
3389 if (unlikely(!icr
)) {
3390 #ifdef CONFIG_E1000_NAPI
3391 if (hw
->mac_type
>= e1000_82571
)
3392 e1000_irq_enable(adapter
);
3394 return IRQ_NONE
; /* Not our interrupt */
3397 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3398 hw
->get_link_status
= 1;
3399 /* 80003ES2LAN workaround--
3400 * For packet buffer work-around on link down event;
3401 * disable receives here in the ISR and
3402 * reset adapter in watchdog
3404 if (netif_carrier_ok(netdev
) &&
3405 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3406 /* disable receives */
3407 rctl
= E1000_READ_REG(hw
, RCTL
);
3408 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3410 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3413 #ifdef CONFIG_E1000_NAPI
3414 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3415 atomic_inc(&adapter
->irq_sem
);
3416 E1000_WRITE_REG(hw
, IMC
, ~0);
3417 E1000_WRITE_FLUSH(hw
);
3419 if (likely(netif_rx_schedule_prep(netdev
)))
3420 __netif_rx_schedule(netdev
);
3422 e1000_irq_enable(adapter
);
3424 /* Writing IMC and IMS is needed for 82547.
3425 * Due to Hub Link bus being occupied, an interrupt
3426 * de-assertion message is not able to be sent.
3427 * When an interrupt assertion message is generated later,
3428 * two messages are re-ordered and sent out.
3429 * That causes APIC to think 82547 is in de-assertion
3430 * state, while 82547 is in assertion state, resulting
3431 * in dead lock. Writing IMC forces 82547 into
3432 * de-assertion state.
3434 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3435 atomic_inc(&adapter
->irq_sem
);
3436 E1000_WRITE_REG(hw
, IMC
, ~0);
3439 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3440 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3441 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3444 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3445 e1000_irq_enable(adapter
);
3452 #ifdef CONFIG_E1000_NAPI
3454 * e1000_clean - NAPI Rx polling callback
3455 * @adapter: board private structure
3459 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3461 struct e1000_adapter
*adapter
;
3462 int work_to_do
= min(*budget
, poll_dev
->quota
);
3463 int tx_cleaned
= 0, work_done
= 0;
3465 /* Must NOT use netdev_priv macro here. */
3466 adapter
= poll_dev
->priv
;
3468 /* Keep link state information with original netdev */
3469 if (!netif_carrier_ok(poll_dev
))
3472 /* e1000_clean is called per-cpu. This lock protects
3473 * tx_ring[0] from being cleaned by multiple cpus
3474 * simultaneously. A failure obtaining the lock means
3475 * tx_ring[0] is currently being cleaned anyway. */
3476 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3477 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3478 &adapter
->tx_ring
[0]);
3479 spin_unlock(&adapter
->tx_queue_lock
);
3482 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[0],
3483 &work_done
, work_to_do
);
3485 *budget
-= work_done
;
3486 poll_dev
->quota
-= work_done
;
3488 /* If no Tx and not enough Rx work done, exit the polling mode */
3489 if ((!tx_cleaned
&& (work_done
== 0)) ||
3490 !netif_running(poll_dev
)) {
3492 netif_rx_complete(poll_dev
);
3493 e1000_irq_enable(adapter
);
3502 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3503 * @adapter: board private structure
3507 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3508 struct e1000_tx_ring
*tx_ring
)
3510 struct net_device
*netdev
= adapter
->netdev
;
3511 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3512 struct e1000_buffer
*buffer_info
;
3513 unsigned int i
, eop
;
3514 #ifdef CONFIG_E1000_NAPI
3515 unsigned int count
= 0;
3517 boolean_t cleaned
= FALSE
;
3519 i
= tx_ring
->next_to_clean
;
3520 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3521 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3523 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3524 for (cleaned
= FALSE
; !cleaned
; ) {
3525 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3526 buffer_info
= &tx_ring
->buffer_info
[i
];
3527 cleaned
= (i
== eop
);
3529 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3530 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3532 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3536 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3537 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3538 #ifdef CONFIG_E1000_NAPI
3539 #define E1000_TX_WEIGHT 64
3540 /* weight of a sort for tx, to avoid endless transmit cleanup */
3541 if (count
++ == E1000_TX_WEIGHT
) break;
3545 tx_ring
->next_to_clean
= i
;
3547 #define TX_WAKE_THRESHOLD 32
3548 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3549 netif_carrier_ok(netdev
))) {
3550 spin_lock(&tx_ring
->tx_lock
);
3551 if (netif_queue_stopped(netdev
) &&
3552 (E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))
3553 netif_wake_queue(netdev
);
3554 spin_unlock(&tx_ring
->tx_lock
);
3557 if (adapter
->detect_tx_hung
) {
3558 /* Detect a transmit hang in hardware, this serializes the
3559 * check with the clearing of time_stamp and movement of i */
3560 adapter
->detect_tx_hung
= FALSE
;
3561 if (tx_ring
->buffer_info
[eop
].dma
&&
3562 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3563 (adapter
->tx_timeout_factor
* HZ
))
3564 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3565 E1000_STATUS_TXOFF
)) {
3567 /* detected Tx unit hang */
3568 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3572 " next_to_use <%x>\n"
3573 " next_to_clean <%x>\n"
3574 "buffer_info[next_to_clean]\n"
3575 " time_stamp <%lx>\n"
3576 " next_to_watch <%x>\n"
3578 " next_to_watch.status <%x>\n",
3579 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3580 sizeof(struct e1000_tx_ring
)),
3581 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3582 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3583 tx_ring
->next_to_use
,
3584 tx_ring
->next_to_clean
,
3585 tx_ring
->buffer_info
[eop
].time_stamp
,
3588 eop_desc
->upper
.fields
.status
);
3589 netif_stop_queue(netdev
);
3596 * e1000_rx_checksum - Receive Checksum Offload for 82543
3597 * @adapter: board private structure
3598 * @status_err: receive descriptor status and error fields
3599 * @csum: receive descriptor csum field
3600 * @sk_buff: socket buffer with received data
3604 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3605 uint32_t status_err
, uint32_t csum
,
3606 struct sk_buff
*skb
)
3608 uint16_t status
= (uint16_t)status_err
;
3609 uint8_t errors
= (uint8_t)(status_err
>> 24);
3610 skb
->ip_summed
= CHECKSUM_NONE
;
3612 /* 82543 or newer only */
3613 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3614 /* Ignore Checksum bit is set */
3615 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3616 /* TCP/UDP checksum error bit is set */
3617 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3618 /* let the stack verify checksum errors */
3619 adapter
->hw_csum_err
++;
3622 /* TCP/UDP Checksum has not been calculated */
3623 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3624 if (!(status
& E1000_RXD_STAT_TCPCS
))
3627 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3630 /* It must be a TCP or UDP packet with a valid checksum */
3631 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3632 /* TCP checksum is good */
3633 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3634 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3635 /* IP fragment with UDP payload */
3636 /* Hardware complements the payload checksum, so we undo it
3637 * and then put the value in host order for further stack use.
3639 csum
= ntohl(csum
^ 0xFFFF);
3641 skb
->ip_summed
= CHECKSUM_HW
;
3643 adapter
->hw_csum_good
++;
3647 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3648 * @adapter: board private structure
3652 #ifdef CONFIG_E1000_NAPI
3653 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3654 struct e1000_rx_ring
*rx_ring
,
3655 int *work_done
, int work_to_do
)
3657 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3658 struct e1000_rx_ring
*rx_ring
)
3661 struct net_device
*netdev
= adapter
->netdev
;
3662 struct pci_dev
*pdev
= adapter
->pdev
;
3663 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3664 struct e1000_buffer
*buffer_info
, *next_buffer
;
3665 unsigned long flags
;
3669 int cleaned_count
= 0;
3670 boolean_t cleaned
= FALSE
;
3672 i
= rx_ring
->next_to_clean
;
3673 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3674 buffer_info
= &rx_ring
->buffer_info
[i
];
3676 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3677 struct sk_buff
*skb
;
3679 #ifdef CONFIG_E1000_NAPI
3680 if (*work_done
>= work_to_do
)
3684 status
= rx_desc
->status
;
3685 skb
= buffer_info
->skb
;
3686 buffer_info
->skb
= NULL
;
3688 prefetch(skb
->data
- NET_IP_ALIGN
);
3690 if (++i
== rx_ring
->count
) i
= 0;
3691 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3694 next_buffer
= &rx_ring
->buffer_info
[i
];
3698 pci_unmap_single(pdev
,
3700 buffer_info
->length
,
3701 PCI_DMA_FROMDEVICE
);
3703 length
= le16_to_cpu(rx_desc
->length
);
3705 /* adjust length to remove Ethernet CRC */
3708 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3709 /* All receives must fit into a single buffer */
3710 E1000_DBG("%s: Receive packet consumed multiple"
3711 " buffers\n", netdev
->name
);
3713 buffer_info
->skb
= skb
;
3717 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3718 last_byte
= *(skb
->data
+ length
- 1);
3719 if (TBI_ACCEPT(&adapter
->hw
, status
,
3720 rx_desc
->errors
, length
, last_byte
)) {
3721 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3722 e1000_tbi_adjust_stats(&adapter
->hw
,
3725 spin_unlock_irqrestore(&adapter
->stats_lock
,
3730 buffer_info
->skb
= skb
;
3735 /* code added for copybreak, this should improve
3736 * performance for small packets with large amounts
3737 * of reassembly being done in the stack */
3738 #define E1000_CB_LENGTH 256
3739 if (length
< E1000_CB_LENGTH
) {
3740 struct sk_buff
*new_skb
=
3741 netdev_alloc_skb(netdev
, length
+ NET_IP_ALIGN
);
3743 skb_reserve(new_skb
, NET_IP_ALIGN
);
3744 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3745 skb
->data
- NET_IP_ALIGN
,
3746 length
+ NET_IP_ALIGN
);
3747 /* save the skb in buffer_info as good */
3748 buffer_info
->skb
= skb
;
3750 skb_put(skb
, length
);
3753 skb_put(skb
, length
);
3755 /* end copybreak code */
3757 /* Receive Checksum Offload */
3758 e1000_rx_checksum(adapter
,
3759 (uint32_t)(status
) |
3760 ((uint32_t)(rx_desc
->errors
) << 24),
3761 le16_to_cpu(rx_desc
->csum
), skb
);
3763 skb
->protocol
= eth_type_trans(skb
, netdev
);
3764 #ifdef CONFIG_E1000_NAPI
3765 if (unlikely(adapter
->vlgrp
&&
3766 (status
& E1000_RXD_STAT_VP
))) {
3767 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3768 le16_to_cpu(rx_desc
->special
) &
3769 E1000_RXD_SPC_VLAN_MASK
);
3771 netif_receive_skb(skb
);
3773 #else /* CONFIG_E1000_NAPI */
3774 if (unlikely(adapter
->vlgrp
&&
3775 (status
& E1000_RXD_STAT_VP
))) {
3776 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3777 le16_to_cpu(rx_desc
->special
) &
3778 E1000_RXD_SPC_VLAN_MASK
);
3782 #endif /* CONFIG_E1000_NAPI */
3783 netdev
->last_rx
= jiffies
;
3786 rx_desc
->status
= 0;
3788 /* return some buffers to hardware, one at a time is too slow */
3789 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3790 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3794 /* use prefetched values */
3796 buffer_info
= next_buffer
;
3798 rx_ring
->next_to_clean
= i
;
3800 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3802 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3808 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3809 * @adapter: board private structure
3813 #ifdef CONFIG_E1000_NAPI
3814 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3815 struct e1000_rx_ring
*rx_ring
,
3816 int *work_done
, int work_to_do
)
3818 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3819 struct e1000_rx_ring
*rx_ring
)
3822 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3823 struct net_device
*netdev
= adapter
->netdev
;
3824 struct pci_dev
*pdev
= adapter
->pdev
;
3825 struct e1000_buffer
*buffer_info
, *next_buffer
;
3826 struct e1000_ps_page
*ps_page
;
3827 struct e1000_ps_page_dma
*ps_page_dma
;
3828 struct sk_buff
*skb
;
3830 uint32_t length
, staterr
;
3831 int cleaned_count
= 0;
3832 boolean_t cleaned
= FALSE
;
3834 i
= rx_ring
->next_to_clean
;
3835 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3836 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3837 buffer_info
= &rx_ring
->buffer_info
[i
];
3839 while (staterr
& E1000_RXD_STAT_DD
) {
3840 ps_page
= &rx_ring
->ps_page
[i
];
3841 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3842 #ifdef CONFIG_E1000_NAPI
3843 if (unlikely(*work_done
>= work_to_do
))
3847 skb
= buffer_info
->skb
;
3849 /* in the packet split case this is header only */
3850 prefetch(skb
->data
- NET_IP_ALIGN
);
3852 if (++i
== rx_ring
->count
) i
= 0;
3853 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3856 next_buffer
= &rx_ring
->buffer_info
[i
];
3860 pci_unmap_single(pdev
, buffer_info
->dma
,
3861 buffer_info
->length
,
3862 PCI_DMA_FROMDEVICE
);
3864 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3865 E1000_DBG("%s: Packet Split buffers didn't pick up"
3866 " the full packet\n", netdev
->name
);
3867 dev_kfree_skb_irq(skb
);
3871 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3872 dev_kfree_skb_irq(skb
);
3876 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3878 if (unlikely(!length
)) {
3879 E1000_DBG("%s: Last part of the packet spanning"
3880 " multiple descriptors\n", netdev
->name
);
3881 dev_kfree_skb_irq(skb
);
3886 skb_put(skb
, length
);
3889 /* this looks ugly, but it seems compiler issues make it
3890 more efficient than reusing j */
3891 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3893 /* page alloc/put takes too long and effects small packet
3894 * throughput, so unsplit small packets and save the alloc/put*/
3895 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3897 /* there is no documentation about how to call
3898 * kmap_atomic, so we can't hold the mapping
3900 pci_dma_sync_single_for_cpu(pdev
,
3901 ps_page_dma
->ps_page_dma
[0],
3903 PCI_DMA_FROMDEVICE
);
3904 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3905 KM_SKB_DATA_SOFTIRQ
);
3906 memcpy(skb
->tail
, vaddr
, l1
);
3907 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3908 pci_dma_sync_single_for_device(pdev
,
3909 ps_page_dma
->ps_page_dma
[0],
3910 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3911 /* remove the CRC */
3918 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3919 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3921 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3922 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3923 ps_page_dma
->ps_page_dma
[j
] = 0;
3924 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3926 ps_page
->ps_page
[j
] = NULL
;
3928 skb
->data_len
+= length
;
3929 skb
->truesize
+= length
;
3932 /* strip the ethernet crc, problem is we're using pages now so
3933 * this whole operation can get a little cpu intensive */
3934 pskb_trim(skb
, skb
->len
- 4);
3937 e1000_rx_checksum(adapter
, staterr
,
3938 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
3939 skb
->protocol
= eth_type_trans(skb
, netdev
);
3941 if (likely(rx_desc
->wb
.upper
.header_status
&
3942 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
3943 adapter
->rx_hdr_split
++;
3944 #ifdef CONFIG_E1000_NAPI
3945 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3946 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3947 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3948 E1000_RXD_SPC_VLAN_MASK
);
3950 netif_receive_skb(skb
);
3952 #else /* CONFIG_E1000_NAPI */
3953 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3954 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3955 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3956 E1000_RXD_SPC_VLAN_MASK
);
3960 #endif /* CONFIG_E1000_NAPI */
3961 netdev
->last_rx
= jiffies
;
3964 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
3965 buffer_info
->skb
= NULL
;
3967 /* return some buffers to hardware, one at a time is too slow */
3968 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3969 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3973 /* use prefetched values */
3975 buffer_info
= next_buffer
;
3977 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3979 rx_ring
->next_to_clean
= i
;
3981 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3983 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3989 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3990 * @adapter: address of board private structure
3994 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3995 struct e1000_rx_ring
*rx_ring
,
3998 struct net_device
*netdev
= adapter
->netdev
;
3999 struct pci_dev
*pdev
= adapter
->pdev
;
4000 struct e1000_rx_desc
*rx_desc
;
4001 struct e1000_buffer
*buffer_info
;
4002 struct sk_buff
*skb
;
4004 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
4006 i
= rx_ring
->next_to_use
;
4007 buffer_info
= &rx_ring
->buffer_info
[i
];
4009 while (cleaned_count
--) {
4010 skb
= buffer_info
->skb
;
4016 skb
= netdev_alloc_skb(netdev
, bufsz
);
4017 if (unlikely(!skb
)) {
4018 /* Better luck next round */
4019 adapter
->alloc_rx_buff_failed
++;
4023 /* Fix for errata 23, can't cross 64kB boundary */
4024 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4025 struct sk_buff
*oldskb
= skb
;
4026 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
4027 "at %p\n", bufsz
, skb
->data
);
4028 /* Try again, without freeing the previous */
4029 skb
= netdev_alloc_skb(netdev
, bufsz
);
4030 /* Failed allocation, critical failure */
4032 dev_kfree_skb(oldskb
);
4036 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
4039 dev_kfree_skb(oldskb
);
4040 break; /* while !buffer_info->skb */
4043 /* Use new allocation */
4044 dev_kfree_skb(oldskb
);
4046 /* Make buffer alignment 2 beyond a 16 byte boundary
4047 * this will result in a 16 byte aligned IP header after
4048 * the 14 byte MAC header is removed
4050 skb_reserve(skb
, NET_IP_ALIGN
);
4052 buffer_info
->skb
= skb
;
4053 buffer_info
->length
= adapter
->rx_buffer_len
;
4055 buffer_info
->dma
= pci_map_single(pdev
,
4057 adapter
->rx_buffer_len
,
4058 PCI_DMA_FROMDEVICE
);
4060 /* Fix for errata 23, can't cross 64kB boundary */
4061 if (!e1000_check_64k_bound(adapter
,
4062 (void *)(unsigned long)buffer_info
->dma
,
4063 adapter
->rx_buffer_len
)) {
4064 DPRINTK(RX_ERR
, ERR
,
4065 "dma align check failed: %u bytes at %p\n",
4066 adapter
->rx_buffer_len
,
4067 (void *)(unsigned long)buffer_info
->dma
);
4069 buffer_info
->skb
= NULL
;
4071 pci_unmap_single(pdev
, buffer_info
->dma
,
4072 adapter
->rx_buffer_len
,
4073 PCI_DMA_FROMDEVICE
);
4075 break; /* while !buffer_info->skb */
4077 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
4078 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
4080 if (unlikely(++i
== rx_ring
->count
))
4082 buffer_info
= &rx_ring
->buffer_info
[i
];
4085 if (likely(rx_ring
->next_to_use
!= i
)) {
4086 rx_ring
->next_to_use
= i
;
4087 if (unlikely(i
-- == 0))
4088 i
= (rx_ring
->count
- 1);
4090 /* Force memory writes to complete before letting h/w
4091 * know there are new descriptors to fetch. (Only
4092 * applicable for weak-ordered memory model archs,
4093 * such as IA-64). */
4095 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4100 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
4101 * @adapter: address of board private structure
4105 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4106 struct e1000_rx_ring
*rx_ring
,
4109 struct net_device
*netdev
= adapter
->netdev
;
4110 struct pci_dev
*pdev
= adapter
->pdev
;
4111 union e1000_rx_desc_packet_split
*rx_desc
;
4112 struct e1000_buffer
*buffer_info
;
4113 struct e1000_ps_page
*ps_page
;
4114 struct e1000_ps_page_dma
*ps_page_dma
;
4115 struct sk_buff
*skb
;
4118 i
= rx_ring
->next_to_use
;
4119 buffer_info
= &rx_ring
->buffer_info
[i
];
4120 ps_page
= &rx_ring
->ps_page
[i
];
4121 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4123 while (cleaned_count
--) {
4124 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4126 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4127 if (j
< adapter
->rx_ps_pages
) {
4128 if (likely(!ps_page
->ps_page
[j
])) {
4129 ps_page
->ps_page
[j
] =
4130 alloc_page(GFP_ATOMIC
);
4131 if (unlikely(!ps_page
->ps_page
[j
])) {
4132 adapter
->alloc_rx_buff_failed
++;
4135 ps_page_dma
->ps_page_dma
[j
] =
4137 ps_page
->ps_page
[j
],
4139 PCI_DMA_FROMDEVICE
);
4141 /* Refresh the desc even if buffer_addrs didn't
4142 * change because each write-back erases
4145 rx_desc
->read
.buffer_addr
[j
+1] =
4146 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4148 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4151 skb
= netdev_alloc_skb(netdev
,
4152 adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4154 if (unlikely(!skb
)) {
4155 adapter
->alloc_rx_buff_failed
++;
4159 /* Make buffer alignment 2 beyond a 16 byte boundary
4160 * this will result in a 16 byte aligned IP header after
4161 * the 14 byte MAC header is removed
4163 skb_reserve(skb
, NET_IP_ALIGN
);
4165 buffer_info
->skb
= skb
;
4166 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4167 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4168 adapter
->rx_ps_bsize0
,
4169 PCI_DMA_FROMDEVICE
);
4171 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4173 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4174 buffer_info
= &rx_ring
->buffer_info
[i
];
4175 ps_page
= &rx_ring
->ps_page
[i
];
4176 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4180 if (likely(rx_ring
->next_to_use
!= i
)) {
4181 rx_ring
->next_to_use
= i
;
4182 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4184 /* Force memory writes to complete before letting h/w
4185 * know there are new descriptors to fetch. (Only
4186 * applicable for weak-ordered memory model archs,
4187 * such as IA-64). */
4189 /* Hardware increments by 16 bytes, but packet split
4190 * descriptors are 32 bytes...so we increment tail
4193 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4198 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4203 e1000_smartspeed(struct e1000_adapter
*adapter
)
4205 uint16_t phy_status
;
4208 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4209 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4212 if (adapter
->smartspeed
== 0) {
4213 /* If Master/Slave config fault is asserted twice,
4214 * we assume back-to-back */
4215 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4216 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4217 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4218 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4219 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4220 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4221 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4222 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4224 adapter
->smartspeed
++;
4225 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4226 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4228 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4229 MII_CR_RESTART_AUTO_NEG
);
4230 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4235 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4236 /* If still no link, perhaps using 2/3 pair cable */
4237 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4238 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4239 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4240 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4241 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4242 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4243 MII_CR_RESTART_AUTO_NEG
);
4244 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4247 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4248 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4249 adapter
->smartspeed
= 0;
4260 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4266 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4280 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4282 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4283 struct mii_ioctl_data
*data
= if_mii(ifr
);
4287 unsigned long flags
;
4289 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4294 data
->phy_id
= adapter
->hw
.phy_addr
;
4297 if (!capable(CAP_NET_ADMIN
))
4299 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4300 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4302 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4305 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4308 if (!capable(CAP_NET_ADMIN
))
4310 if (data
->reg_num
& ~(0x1F))
4312 mii_reg
= data
->val_in
;
4313 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4314 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4316 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4319 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4320 switch (data
->reg_num
) {
4322 if (mii_reg
& MII_CR_POWER_DOWN
)
4324 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4325 adapter
->hw
.autoneg
= 1;
4326 adapter
->hw
.autoneg_advertised
= 0x2F;
4329 spddplx
= SPEED_1000
;
4330 else if (mii_reg
& 0x2000)
4331 spddplx
= SPEED_100
;
4334 spddplx
+= (mii_reg
& 0x100)
4337 retval
= e1000_set_spd_dplx(adapter
,
4340 spin_unlock_irqrestore(
4341 &adapter
->stats_lock
,
4346 if (netif_running(adapter
->netdev
))
4347 e1000_reinit_locked(adapter
);
4349 e1000_reset(adapter
);
4351 case M88E1000_PHY_SPEC_CTRL
:
4352 case M88E1000_EXT_PHY_SPEC_CTRL
:
4353 if (e1000_phy_reset(&adapter
->hw
)) {
4354 spin_unlock_irqrestore(
4355 &adapter
->stats_lock
, flags
);
4361 switch (data
->reg_num
) {
4363 if (mii_reg
& MII_CR_POWER_DOWN
)
4365 if (netif_running(adapter
->netdev
))
4366 e1000_reinit_locked(adapter
);
4368 e1000_reset(adapter
);
4372 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4377 return E1000_SUCCESS
;
4381 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4383 struct e1000_adapter
*adapter
= hw
->back
;
4384 int ret_val
= pci_set_mwi(adapter
->pdev
);
4387 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4391 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4393 struct e1000_adapter
*adapter
= hw
->back
;
4395 pci_clear_mwi(adapter
->pdev
);
4399 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4401 struct e1000_adapter
*adapter
= hw
->back
;
4403 pci_read_config_word(adapter
->pdev
, reg
, value
);
4407 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4409 struct e1000_adapter
*adapter
= hw
->back
;
4411 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4416 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4423 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4429 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4431 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4432 uint32_t ctrl
, rctl
;
4434 e1000_irq_disable(adapter
);
4435 adapter
->vlgrp
= grp
;
4438 /* enable VLAN tag insert/strip */
4439 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4440 ctrl
|= E1000_CTRL_VME
;
4441 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4443 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4444 /* enable VLAN receive filtering */
4445 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4446 rctl
|= E1000_RCTL_VFE
;
4447 rctl
&= ~E1000_RCTL_CFIEN
;
4448 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4449 e1000_update_mng_vlan(adapter
);
4452 /* disable VLAN tag insert/strip */
4453 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4454 ctrl
&= ~E1000_CTRL_VME
;
4455 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4457 if (adapter
->hw
.mac_type
!= e1000_ich8lan
) {
4458 /* disable VLAN filtering */
4459 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4460 rctl
&= ~E1000_RCTL_VFE
;
4461 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4462 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4463 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4464 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4469 e1000_irq_enable(adapter
);
4473 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4475 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4476 uint32_t vfta
, index
;
4478 if ((adapter
->hw
.mng_cookie
.status
&
4479 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4480 (vid
== adapter
->mng_vlan_id
))
4482 /* add VID to filter table */
4483 index
= (vid
>> 5) & 0x7F;
4484 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4485 vfta
|= (1 << (vid
& 0x1F));
4486 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4490 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4492 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4493 uint32_t vfta
, index
;
4495 e1000_irq_disable(adapter
);
4498 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4500 e1000_irq_enable(adapter
);
4502 if ((adapter
->hw
.mng_cookie
.status
&
4503 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4504 (vid
== adapter
->mng_vlan_id
)) {
4505 /* release control to f/w */
4506 e1000_release_hw_control(adapter
);
4510 /* remove VID from filter table */
4511 index
= (vid
>> 5) & 0x7F;
4512 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4513 vfta
&= ~(1 << (vid
& 0x1F));
4514 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4518 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4520 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4522 if (adapter
->vlgrp
) {
4524 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4525 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4527 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4533 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4535 adapter
->hw
.autoneg
= 0;
4537 /* Fiber NICs only allow 1000 gbps Full duplex */
4538 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4539 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4540 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4545 case SPEED_10
+ DUPLEX_HALF
:
4546 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4548 case SPEED_10
+ DUPLEX_FULL
:
4549 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4551 case SPEED_100
+ DUPLEX_HALF
:
4552 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4554 case SPEED_100
+ DUPLEX_FULL
:
4555 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4557 case SPEED_1000
+ DUPLEX_FULL
:
4558 adapter
->hw
.autoneg
= 1;
4559 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4561 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4563 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4570 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4571 * bus we're on (PCI(X) vs. PCI-E)
4573 #define PCIE_CONFIG_SPACE_LEN 256
4574 #define PCI_CONFIG_SPACE_LEN 64
4576 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4578 struct pci_dev
*dev
= adapter
->pdev
;
4582 if (adapter
->hw
.mac_type
>= e1000_82571
)
4583 size
= PCIE_CONFIG_SPACE_LEN
;
4585 size
= PCI_CONFIG_SPACE_LEN
;
4587 WARN_ON(adapter
->config_space
!= NULL
);
4589 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4590 if (!adapter
->config_space
) {
4591 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4594 for (i
= 0; i
< (size
/ 4); i
++)
4595 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4600 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4602 struct pci_dev
*dev
= adapter
->pdev
;
4606 if (adapter
->config_space
== NULL
)
4609 if (adapter
->hw
.mac_type
>= e1000_82571
)
4610 size
= PCIE_CONFIG_SPACE_LEN
;
4612 size
= PCI_CONFIG_SPACE_LEN
;
4613 for (i
= 0; i
< (size
/ 4); i
++)
4614 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4615 kfree(adapter
->config_space
);
4616 adapter
->config_space
= NULL
;
4619 #endif /* CONFIG_PM */
4622 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4624 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4625 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4626 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4627 uint32_t wufc
= adapter
->wol
;
4632 netif_device_detach(netdev
);
4634 if (netif_running(netdev
)) {
4635 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4636 e1000_down(adapter
);
4640 /* Implement our own version of pci_save_state(pdev) because pci-
4641 * express adapters have 256-byte config spaces. */
4642 retval
= e1000_pci_save_state(adapter
);
4647 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4648 if (status
& E1000_STATUS_LU
)
4649 wufc
&= ~E1000_WUFC_LNKC
;
4652 e1000_setup_rctl(adapter
);
4653 e1000_set_multi(netdev
);
4655 /* turn on all-multi mode if wake on multicast is enabled */
4656 if (wufc
& E1000_WUFC_MC
) {
4657 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4658 rctl
|= E1000_RCTL_MPE
;
4659 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4662 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4663 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4664 /* advertise wake from D3Cold */
4665 #define E1000_CTRL_ADVD3WUC 0x00100000
4666 /* phy power management enable */
4667 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4668 ctrl
|= E1000_CTRL_ADVD3WUC
|
4669 E1000_CTRL_EN_PHY_PWR_MGMT
;
4670 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4673 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4674 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4675 /* keep the laser running in D3 */
4676 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4677 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4678 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4681 /* Allow time for pending master requests to run */
4682 e1000_disable_pciex_master(&adapter
->hw
);
4684 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4685 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4686 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4687 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4689 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4690 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4691 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4692 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4695 /* FIXME: this code is incorrect for PCI Express */
4696 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4697 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
4698 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4699 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4700 if (manc
& E1000_MANC_SMBUS_EN
) {
4701 manc
|= E1000_MANC_ARP_EN
;
4702 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4703 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4704 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4708 if (adapter
->hw
.phy_type
== e1000_phy_igp_3
)
4709 e1000_phy_powerdown_workaround(&adapter
->hw
);
4711 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4712 * would have already happened in close and is redundant. */
4713 e1000_release_hw_control(adapter
);
4715 pci_disable_device(pdev
);
4717 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4724 e1000_resume(struct pci_dev
*pdev
)
4726 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4727 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4730 pci_set_power_state(pdev
, PCI_D0
);
4731 e1000_pci_restore_state(adapter
);
4732 if ((err
= pci_enable_device(pdev
))) {
4733 printk(KERN_ERR
"e1000: Cannot enable PCI device from suspend\n");
4736 pci_set_master(pdev
);
4738 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4739 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4741 e1000_reset(adapter
);
4742 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4744 if (netif_running(netdev
))
4747 netif_device_attach(netdev
);
4749 /* FIXME: this code is incorrect for PCI Express */
4750 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4751 adapter
->hw
.mac_type
!= e1000_ich8lan
&&
4752 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4753 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4754 manc
&= ~(E1000_MANC_ARP_EN
);
4755 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4758 /* If the controller is 82573 and f/w is AMT, do not set
4759 * DRV_LOAD until the interface is up. For all other cases,
4760 * let the f/w know that the h/w is now under the control
4762 if (adapter
->hw
.mac_type
!= e1000_82573
||
4763 !e1000_check_mng_mode(&adapter
->hw
))
4764 e1000_get_hw_control(adapter
);
4770 static void e1000_shutdown(struct pci_dev
*pdev
)
4772 e1000_suspend(pdev
, PMSG_SUSPEND
);
4775 #ifdef CONFIG_NET_POLL_CONTROLLER
4777 * Polling 'interrupt' - used by things like netconsole to send skbs
4778 * without having to re-enable interrupts. It's not called while
4779 * the interrupt routine is executing.
4782 e1000_netpoll(struct net_device
*netdev
)
4784 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4786 disable_irq(adapter
->pdev
->irq
);
4787 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4788 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4789 #ifndef CONFIG_E1000_NAPI
4790 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4792 enable_irq(adapter
->pdev
->irq
);
4797 * e1000_io_error_detected - called when PCI error is detected
4798 * @pdev: Pointer to PCI device
4799 * @state: The current pci conneection state
4801 * This function is called after a PCI bus error affecting
4802 * this device has been detected.
4804 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4806 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4807 struct e1000_adapter
*adapter
= netdev
->priv
;
4809 netif_device_detach(netdev
);
4811 if (netif_running(netdev
))
4812 e1000_down(adapter
);
4814 /* Request a slot slot reset. */
4815 return PCI_ERS_RESULT_NEED_RESET
;
4819 * e1000_io_slot_reset - called after the pci bus has been reset.
4820 * @pdev: Pointer to PCI device
4822 * Restart the card from scratch, as if from a cold-boot. Implementation
4823 * resembles the first-half of the e1000_resume routine.
4825 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4827 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4828 struct e1000_adapter
*adapter
= netdev
->priv
;
4830 if (pci_enable_device(pdev
)) {
4831 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4832 return PCI_ERS_RESULT_DISCONNECT
;
4834 pci_set_master(pdev
);
4836 pci_enable_wake(pdev
, 3, 0);
4837 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4839 /* Perform card reset only on one instance of the card */
4840 if (PCI_FUNC (pdev
->devfn
) != 0)
4841 return PCI_ERS_RESULT_RECOVERED
;
4843 e1000_reset(adapter
);
4844 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4846 return PCI_ERS_RESULT_RECOVERED
;
4850 * e1000_io_resume - called when traffic can start flowing again.
4851 * @pdev: Pointer to PCI device
4853 * This callback is called when the error recovery driver tells us that
4854 * its OK to resume normal operation. Implementation resembles the
4855 * second-half of the e1000_resume routine.
4857 static void e1000_io_resume(struct pci_dev
*pdev
)
4859 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4860 struct e1000_adapter
*adapter
= netdev
->priv
;
4861 uint32_t manc
, swsm
;
4863 if (netif_running(netdev
)) {
4864 if (e1000_up(adapter
)) {
4865 printk("e1000: can't bring device back up after reset\n");
4870 netif_device_attach(netdev
);
4872 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4873 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4874 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4875 manc
&= ~(E1000_MANC_ARP_EN
);
4876 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4879 switch (adapter
->hw
.mac_type
) {
4881 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4882 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4883 swsm
| E1000_SWSM_DRV_LOAD
);
4889 if (netif_running(netdev
))
4890 mod_timer(&adapter
->watchdog_timer
, jiffies
);