1 /*******************************************************************************
4 Copyright(c) 1999 - 2005 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 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
33 * o Accepted ethtool cleanup patch from Stephen Hemminger
35 * o applied Anton's patch to resolve tx hang in hardware
36 * o Applied Andrew Mortons patch - e1000 stops working after resume
39 char e1000_driver_name
[] = "e1000";
40 char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
41 #ifndef CONFIG_E1000_NAPI
44 #define DRIVERNAPI "-NAPI"
46 #define DRV_VERSION "6.0.60-k2"DRIVERNAPI
47 char e1000_driver_version
[] = DRV_VERSION
;
48 char e1000_copyright
[] = "Copyright (c) 1999-2005 Intel Corporation.";
50 /* e1000_pci_tbl - PCI Device ID Table
52 * Last entry must be all 0s
55 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
57 static struct pci_device_id e1000_pci_tbl
[] = {
58 INTEL_E1000_ETHERNET_DEVICE(0x1000),
59 INTEL_E1000_ETHERNET_DEVICE(0x1001),
60 INTEL_E1000_ETHERNET_DEVICE(0x1004),
61 INTEL_E1000_ETHERNET_DEVICE(0x1008),
62 INTEL_E1000_ETHERNET_DEVICE(0x1009),
63 INTEL_E1000_ETHERNET_DEVICE(0x100C),
64 INTEL_E1000_ETHERNET_DEVICE(0x100D),
65 INTEL_E1000_ETHERNET_DEVICE(0x100E),
66 INTEL_E1000_ETHERNET_DEVICE(0x100F),
67 INTEL_E1000_ETHERNET_DEVICE(0x1010),
68 INTEL_E1000_ETHERNET_DEVICE(0x1011),
69 INTEL_E1000_ETHERNET_DEVICE(0x1012),
70 INTEL_E1000_ETHERNET_DEVICE(0x1013),
71 INTEL_E1000_ETHERNET_DEVICE(0x1014),
72 INTEL_E1000_ETHERNET_DEVICE(0x1015),
73 INTEL_E1000_ETHERNET_DEVICE(0x1016),
74 INTEL_E1000_ETHERNET_DEVICE(0x1017),
75 INTEL_E1000_ETHERNET_DEVICE(0x1018),
76 INTEL_E1000_ETHERNET_DEVICE(0x1019),
77 INTEL_E1000_ETHERNET_DEVICE(0x101A),
78 INTEL_E1000_ETHERNET_DEVICE(0x101D),
79 INTEL_E1000_ETHERNET_DEVICE(0x101E),
80 INTEL_E1000_ETHERNET_DEVICE(0x1026),
81 INTEL_E1000_ETHERNET_DEVICE(0x1027),
82 INTEL_E1000_ETHERNET_DEVICE(0x1028),
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(0x108A),
92 INTEL_E1000_ETHERNET_DEVICE(0x108B),
93 INTEL_E1000_ETHERNET_DEVICE(0x108C),
94 INTEL_E1000_ETHERNET_DEVICE(0x1099),
95 /* required last entry */
99 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
101 int e1000_up(struct e1000_adapter
*adapter
);
102 void e1000_down(struct e1000_adapter
*adapter
);
103 void e1000_reset(struct e1000_adapter
*adapter
);
104 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
105 int e1000_setup_tx_resources(struct e1000_adapter
*adapter
);
106 int e1000_setup_rx_resources(struct e1000_adapter
*adapter
);
107 void e1000_free_tx_resources(struct e1000_adapter
*adapter
);
108 void e1000_free_rx_resources(struct e1000_adapter
*adapter
);
109 void e1000_update_stats(struct e1000_adapter
*adapter
);
111 /* Local Function Prototypes */
113 static int e1000_init_module(void);
114 static void e1000_exit_module(void);
115 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
116 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
117 static int e1000_sw_init(struct e1000_adapter
*adapter
);
118 static int e1000_open(struct net_device
*netdev
);
119 static int e1000_close(struct net_device
*netdev
);
120 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
121 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
122 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
123 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
);
124 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
);
125 static void e1000_set_multi(struct net_device
*netdev
);
126 static void e1000_update_phy_info(unsigned long data
);
127 static void e1000_watchdog(unsigned long data
);
128 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
129 static void e1000_82547_tx_fifo_stall(unsigned long data
);
130 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
131 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
132 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
133 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
134 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
135 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
);
136 #ifdef CONFIG_E1000_NAPI
137 static int e1000_clean(struct net_device
*netdev
, int *budget
);
138 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
139 int *work_done
, int work_to_do
);
140 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
141 int *work_done
, int work_to_do
);
143 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
);
144 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
);
146 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
);
147 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
);
148 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
149 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
151 void e1000_set_ethtool_ops(struct net_device
*netdev
);
152 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
153 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
154 static void e1000_tx_timeout(struct net_device
*dev
);
155 static void e1000_tx_timeout_task(struct net_device
*dev
);
156 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
157 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
158 struct sk_buff
*skb
);
160 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
161 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
162 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
163 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
165 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
167 static int e1000_resume(struct pci_dev
*pdev
);
170 #ifdef CONFIG_NET_POLL_CONTROLLER
171 /* for netdump / net console */
172 static void e1000_netpoll (struct net_device
*netdev
);
175 /* Exported from other modules */
177 extern void e1000_check_options(struct e1000_adapter
*adapter
);
179 static struct pci_driver e1000_driver
= {
180 .name
= e1000_driver_name
,
181 .id_table
= e1000_pci_tbl
,
182 .probe
= e1000_probe
,
183 .remove
= __devexit_p(e1000_remove
),
184 /* Power Managment Hooks */
186 .suspend
= e1000_suspend
,
187 .resume
= e1000_resume
191 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
192 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
193 MODULE_LICENSE("GPL");
194 MODULE_VERSION(DRV_VERSION
);
196 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
197 module_param(debug
, int, 0);
198 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
201 * e1000_init_module - Driver Registration Routine
203 * e1000_init_module is the first routine called when the driver is
204 * loaded. All it does is register with the PCI subsystem.
208 e1000_init_module(void)
211 printk(KERN_INFO
"%s - version %s\n",
212 e1000_driver_string
, e1000_driver_version
);
214 printk(KERN_INFO
"%s\n", e1000_copyright
);
216 ret
= pci_module_init(&e1000_driver
);
221 module_init(e1000_init_module
);
224 * e1000_exit_module - Driver Exit Cleanup Routine
226 * e1000_exit_module is called just before the driver is removed
231 e1000_exit_module(void)
233 pci_unregister_driver(&e1000_driver
);
236 module_exit(e1000_exit_module
);
239 * e1000_irq_disable - Mask off interrupt generation on the NIC
240 * @adapter: board private structure
244 e1000_irq_disable(struct e1000_adapter
*adapter
)
246 atomic_inc(&adapter
->irq_sem
);
247 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
248 E1000_WRITE_FLUSH(&adapter
->hw
);
249 synchronize_irq(adapter
->pdev
->irq
);
253 * e1000_irq_enable - Enable default interrupt generation settings
254 * @adapter: board private structure
258 e1000_irq_enable(struct e1000_adapter
*adapter
)
260 if(likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
261 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
262 E1000_WRITE_FLUSH(&adapter
->hw
);
266 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
268 struct net_device
*netdev
= adapter
->netdev
;
269 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
270 uint16_t old_vid
= adapter
->mng_vlan_id
;
272 if(!adapter
->vlgrp
->vlan_devices
[vid
]) {
273 if(adapter
->hw
.mng_cookie
.status
&
274 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
275 e1000_vlan_rx_add_vid(netdev
, vid
);
276 adapter
->mng_vlan_id
= vid
;
278 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
280 if((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
282 !adapter
->vlgrp
->vlan_devices
[old_vid
])
283 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
289 e1000_up(struct e1000_adapter
*adapter
)
291 struct net_device
*netdev
= adapter
->netdev
;
294 /* hardware has been reset, we need to reload some things */
296 /* Reset the PHY if it was previously powered down */
297 if(adapter
->hw
.media_type
== e1000_media_type_copper
) {
299 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
300 if(mii_reg
& MII_CR_POWER_DOWN
)
301 e1000_phy_reset(&adapter
->hw
);
304 e1000_set_multi(netdev
);
306 e1000_restore_vlan(adapter
);
308 e1000_configure_tx(adapter
);
309 e1000_setup_rctl(adapter
);
310 e1000_configure_rx(adapter
);
311 adapter
->alloc_rx_buf(adapter
);
313 #ifdef CONFIG_PCI_MSI
314 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
315 adapter
->have_msi
= TRUE
;
316 if((err
= pci_enable_msi(adapter
->pdev
))) {
318 "Unable to allocate MSI interrupt Error: %d\n", err
);
319 adapter
->have_msi
= FALSE
;
323 if((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
324 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
325 netdev
->name
, netdev
))) {
327 "Unable to allocate interrupt Error: %d\n", err
);
331 mod_timer(&adapter
->watchdog_timer
, jiffies
);
333 #ifdef CONFIG_E1000_NAPI
334 netif_poll_enable(netdev
);
336 e1000_irq_enable(adapter
);
342 e1000_down(struct e1000_adapter
*adapter
)
344 struct net_device
*netdev
= adapter
->netdev
;
346 e1000_irq_disable(adapter
);
347 free_irq(adapter
->pdev
->irq
, netdev
);
348 #ifdef CONFIG_PCI_MSI
349 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
350 adapter
->have_msi
== TRUE
)
351 pci_disable_msi(adapter
->pdev
);
353 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
354 del_timer_sync(&adapter
->watchdog_timer
);
355 del_timer_sync(&adapter
->phy_info_timer
);
357 #ifdef CONFIG_E1000_NAPI
358 netif_poll_disable(netdev
);
360 adapter
->link_speed
= 0;
361 adapter
->link_duplex
= 0;
362 netif_carrier_off(netdev
);
363 netif_stop_queue(netdev
);
365 e1000_reset(adapter
);
366 e1000_clean_tx_ring(adapter
);
367 e1000_clean_rx_ring(adapter
);
369 /* If WoL is not enabled
370 * and management mode is not IAMT
371 * Power down the PHY so no link is implied when interface is down */
372 if(!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
373 adapter
->hw
.media_type
== e1000_media_type_copper
&&
374 !e1000_check_mng_mode(&adapter
->hw
) &&
375 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
)) {
377 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
378 mii_reg
|= MII_CR_POWER_DOWN
;
379 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
385 e1000_reset(struct e1000_adapter
*adapter
)
387 struct net_device
*netdev
= adapter
->netdev
;
389 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
390 uint16_t fc_low_water_mark
= E1000_FC_LOW_DIFF
;
392 /* Repartition Pba for greater than 9k mtu
393 * To take effect CTRL.RST is required.
396 switch (adapter
->hw
.mac_type
) {
398 case e1000_82547_rev_2
:
409 if((adapter
->hw
.mac_type
!= e1000_82573
) &&
410 (adapter
->rx_buffer_len
> E1000_RXBUFFER_8192
)) {
411 pba
-= 8; /* allocate more FIFO for Tx */
412 /* send an XOFF when there is enough space in the
413 * Rx FIFO to hold one extra full size Rx packet
415 fc_high_water_mark
= netdev
->mtu
+ ENET_HEADER_SIZE
+
416 ETHERNET_FCS_SIZE
+ 1;
417 fc_low_water_mark
= fc_high_water_mark
+ 8;
421 if(adapter
->hw
.mac_type
== e1000_82547
) {
422 adapter
->tx_fifo_head
= 0;
423 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
424 adapter
->tx_fifo_size
=
425 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
426 atomic_set(&adapter
->tx_fifo_stall
, 0);
429 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
431 /* flow control settings */
432 adapter
->hw
.fc_high_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
434 adapter
->hw
.fc_low_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
436 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
437 adapter
->hw
.fc_send_xon
= 1;
438 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
440 /* Allow time for pending master requests to run */
441 e1000_reset_hw(&adapter
->hw
);
442 if(adapter
->hw
.mac_type
>= e1000_82544
)
443 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
444 if(e1000_init_hw(&adapter
->hw
))
445 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
446 e1000_update_mng_vlan(adapter
);
447 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
448 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
450 e1000_reset_adaptive(&adapter
->hw
);
451 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
452 if (adapter
->en_mng_pt
) {
453 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
454 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
455 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
460 * e1000_probe - Device Initialization Routine
461 * @pdev: PCI device information struct
462 * @ent: entry in e1000_pci_tbl
464 * Returns 0 on success, negative on failure
466 * e1000_probe initializes an adapter identified by a pci_dev structure.
467 * The OS initialization, configuring of the adapter private structure,
468 * and a hardware reset occur.
472 e1000_probe(struct pci_dev
*pdev
,
473 const struct pci_device_id
*ent
)
475 struct net_device
*netdev
;
476 struct e1000_adapter
*adapter
;
477 unsigned long mmio_start
, mmio_len
;
480 static int cards_found
= 0;
481 int i
, err
, pci_using_dac
;
482 uint16_t eeprom_data
;
483 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
484 if((err
= pci_enable_device(pdev
)))
487 if(!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
490 if((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
491 E1000_ERR("No usable DMA configuration, aborting\n");
497 if((err
= pci_request_regions(pdev
, e1000_driver_name
)))
500 pci_set_master(pdev
);
502 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
505 goto err_alloc_etherdev
;
508 SET_MODULE_OWNER(netdev
);
509 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
511 pci_set_drvdata(pdev
, netdev
);
512 adapter
= netdev_priv(netdev
);
513 adapter
->netdev
= netdev
;
514 adapter
->pdev
= pdev
;
515 adapter
->hw
.back
= adapter
;
516 adapter
->msg_enable
= (1 << debug
) - 1;
518 mmio_start
= pci_resource_start(pdev
, BAR_0
);
519 mmio_len
= pci_resource_len(pdev
, BAR_0
);
521 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
522 if(!adapter
->hw
.hw_addr
) {
527 for(i
= BAR_1
; i
<= BAR_5
; i
++) {
528 if(pci_resource_len(pdev
, i
) == 0)
530 if(pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
531 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
536 netdev
->open
= &e1000_open
;
537 netdev
->stop
= &e1000_close
;
538 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
539 netdev
->get_stats
= &e1000_get_stats
;
540 netdev
->set_multicast_list
= &e1000_set_multi
;
541 netdev
->set_mac_address
= &e1000_set_mac
;
542 netdev
->change_mtu
= &e1000_change_mtu
;
543 netdev
->do_ioctl
= &e1000_ioctl
;
544 e1000_set_ethtool_ops(netdev
);
545 netdev
->tx_timeout
= &e1000_tx_timeout
;
546 netdev
->watchdog_timeo
= 5 * HZ
;
547 #ifdef CONFIG_E1000_NAPI
548 netdev
->poll
= &e1000_clean
;
551 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
552 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
553 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
554 #ifdef CONFIG_NET_POLL_CONTROLLER
555 netdev
->poll_controller
= e1000_netpoll
;
557 strcpy(netdev
->name
, pci_name(pdev
));
559 netdev
->mem_start
= mmio_start
;
560 netdev
->mem_end
= mmio_start
+ mmio_len
;
561 netdev
->base_addr
= adapter
->hw
.io_base
;
563 adapter
->bd_number
= cards_found
;
565 /* setup the private structure */
567 if((err
= e1000_sw_init(adapter
)))
570 if((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
571 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
573 if(adapter
->hw
.mac_type
>= e1000_82543
) {
574 netdev
->features
= NETIF_F_SG
|
578 NETIF_F_HW_VLAN_FILTER
;
582 if((adapter
->hw
.mac_type
>= e1000_82544
) &&
583 (adapter
->hw
.mac_type
!= e1000_82547
))
584 netdev
->features
|= NETIF_F_TSO
;
586 #ifdef NETIF_F_TSO_IPV6
587 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
)
588 netdev
->features
|= NETIF_F_TSO_IPV6
;
592 netdev
->features
|= NETIF_F_HIGHDMA
;
594 /* hard_start_xmit is safe against parallel locking */
595 netdev
->features
|= NETIF_F_LLTX
;
597 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
599 /* before reading the EEPROM, reset the controller to
600 * put the device in a known good starting state */
602 e1000_reset_hw(&adapter
->hw
);
604 /* make sure the EEPROM is good */
606 if(e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
607 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
612 /* copy the MAC address out of the EEPROM */
614 if(e1000_read_mac_addr(&adapter
->hw
))
615 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
616 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
617 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
619 if(!is_valid_ether_addr(netdev
->perm_addr
)) {
620 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
625 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
627 e1000_get_bus_info(&adapter
->hw
);
629 init_timer(&adapter
->tx_fifo_stall_timer
);
630 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
631 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
633 init_timer(&adapter
->watchdog_timer
);
634 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
635 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
637 INIT_WORK(&adapter
->watchdog_task
,
638 (void (*)(void *))e1000_watchdog_task
, adapter
);
640 init_timer(&adapter
->phy_info_timer
);
641 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
642 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
644 INIT_WORK(&adapter
->tx_timeout_task
,
645 (void (*)(void *))e1000_tx_timeout_task
, netdev
);
647 /* we're going to reset, so assume we have no link for now */
649 netif_carrier_off(netdev
);
650 netif_stop_queue(netdev
);
652 e1000_check_options(adapter
);
654 /* Initial Wake on LAN setting
655 * If APM wake is enabled in the EEPROM,
656 * enable the ACPI Magic Packet filter
659 switch(adapter
->hw
.mac_type
) {
660 case e1000_82542_rev2_0
:
661 case e1000_82542_rev2_1
:
665 e1000_read_eeprom(&adapter
->hw
,
666 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
667 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
670 case e1000_82546_rev_3
:
671 if((E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
672 && (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
673 e1000_read_eeprom(&adapter
->hw
,
674 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
679 e1000_read_eeprom(&adapter
->hw
,
680 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
683 if(eeprom_data
& eeprom_apme_mask
)
684 adapter
->wol
|= E1000_WUFC_MAG
;
686 /* reset the hardware with the new settings */
687 e1000_reset(adapter
);
689 /* Let firmware know the driver has taken over */
690 switch(adapter
->hw
.mac_type
) {
692 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
693 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
694 swsm
| E1000_SWSM_DRV_LOAD
);
700 strcpy(netdev
->name
, "eth%d");
701 if((err
= register_netdev(netdev
)))
704 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
712 iounmap(adapter
->hw
.hw_addr
);
716 pci_release_regions(pdev
);
721 * e1000_remove - Device Removal Routine
722 * @pdev: PCI device information struct
724 * e1000_remove is called by the PCI subsystem to alert the driver
725 * that it should release a PCI device. The could be caused by a
726 * Hot-Plug event, or because the driver is going to be removed from
730 static void __devexit
731 e1000_remove(struct pci_dev
*pdev
)
733 struct net_device
*netdev
= pci_get_drvdata(pdev
);
734 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
737 flush_scheduled_work();
739 if(adapter
->hw
.mac_type
>= e1000_82540
&&
740 adapter
->hw
.media_type
== e1000_media_type_copper
) {
741 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
742 if(manc
& E1000_MANC_SMBUS_EN
) {
743 manc
|= E1000_MANC_ARP_EN
;
744 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
748 switch(adapter
->hw
.mac_type
) {
750 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
751 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
752 swsm
& ~E1000_SWSM_DRV_LOAD
);
759 unregister_netdev(netdev
);
761 if(!e1000_check_phy_reset_block(&adapter
->hw
))
762 e1000_phy_hw_reset(&adapter
->hw
);
764 iounmap(adapter
->hw
.hw_addr
);
765 pci_release_regions(pdev
);
769 pci_disable_device(pdev
);
773 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
774 * @adapter: board private structure to initialize
776 * e1000_sw_init initializes the Adapter private data structure.
777 * Fields are initialized based on PCI device information and
778 * OS network device settings (MTU size).
782 e1000_sw_init(struct e1000_adapter
*adapter
)
784 struct e1000_hw
*hw
= &adapter
->hw
;
785 struct net_device
*netdev
= adapter
->netdev
;
786 struct pci_dev
*pdev
= adapter
->pdev
;
788 /* PCI config space info */
790 hw
->vendor_id
= pdev
->vendor
;
791 hw
->device_id
= pdev
->device
;
792 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
793 hw
->subsystem_id
= pdev
->subsystem_device
;
795 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
797 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
799 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
800 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
801 hw
->max_frame_size
= netdev
->mtu
+
802 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
803 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
805 /* identify the MAC */
807 if(e1000_set_mac_type(hw
)) {
808 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
812 /* initialize eeprom parameters */
814 if(e1000_init_eeprom_params(hw
)) {
815 E1000_ERR("EEPROM initialization failed\n");
819 switch(hw
->mac_type
) {
824 case e1000_82541_rev_2
:
825 case e1000_82547_rev_2
:
826 hw
->phy_init_script
= 1;
830 e1000_set_media_type(hw
);
832 hw
->wait_autoneg_complete
= FALSE
;
833 hw
->tbi_compatibility_en
= TRUE
;
834 hw
->adaptive_ifs
= TRUE
;
838 if(hw
->media_type
== e1000_media_type_copper
) {
839 hw
->mdix
= AUTO_ALL_MODES
;
840 hw
->disable_polarity_correction
= FALSE
;
841 hw
->master_slave
= E1000_MASTER_SLAVE
;
844 atomic_set(&adapter
->irq_sem
, 1);
845 spin_lock_init(&adapter
->stats_lock
);
846 spin_lock_init(&adapter
->tx_lock
);
852 * e1000_open - Called when a network interface is made active
853 * @netdev: network interface device structure
855 * Returns 0 on success, negative value on failure
857 * The open entry point is called when a network interface is made
858 * active by the system (IFF_UP). At this point all resources needed
859 * for transmit and receive operations are allocated, the interrupt
860 * handler is registered with the OS, the watchdog timer is started,
861 * and the stack is notified that the interface is ready.
865 e1000_open(struct net_device
*netdev
)
867 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
870 /* allocate transmit descriptors */
872 if((err
= e1000_setup_tx_resources(adapter
)))
875 /* allocate receive descriptors */
877 if((err
= e1000_setup_rx_resources(adapter
)))
880 if((err
= e1000_up(adapter
)))
882 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
883 if((adapter
->hw
.mng_cookie
.status
&
884 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
885 e1000_update_mng_vlan(adapter
);
888 return E1000_SUCCESS
;
891 e1000_free_rx_resources(adapter
);
893 e1000_free_tx_resources(adapter
);
895 e1000_reset(adapter
);
901 * e1000_close - Disables a network interface
902 * @netdev: network interface device structure
904 * Returns 0, this is not allowed to fail
906 * The close entry point is called when an interface is de-activated
907 * by the OS. The hardware is still under the drivers control, but
908 * needs to be disabled. A global MAC reset is issued to stop the
909 * hardware, and all transmit and receive resources are freed.
913 e1000_close(struct net_device
*netdev
)
915 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
919 e1000_free_tx_resources(adapter
);
920 e1000_free_rx_resources(adapter
);
922 if((adapter
->hw
.mng_cookie
.status
&
923 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
924 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
930 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
931 * @adapter: address of board private structure
932 * @start: address of beginning of memory
933 * @len: length of memory
935 static inline boolean_t
936 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
937 void *start
, unsigned long len
)
939 unsigned long begin
= (unsigned long) start
;
940 unsigned long end
= begin
+ len
;
942 /* First rev 82545 and 82546 need to not allow any memory
943 * write location to cross 64k boundary due to errata 23 */
944 if (adapter
->hw
.mac_type
== e1000_82545
||
945 adapter
->hw
.mac_type
== e1000_82546
) {
946 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
953 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
954 * @adapter: board private structure
956 * Return 0 on success, negative on failure
960 e1000_setup_tx_resources(struct e1000_adapter
*adapter
)
962 struct e1000_desc_ring
*txdr
= &adapter
->tx_ring
;
963 struct pci_dev
*pdev
= adapter
->pdev
;
966 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
967 txdr
->buffer_info
= vmalloc(size
);
968 if(!txdr
->buffer_info
) {
970 "Unable to allocate memory for the transmit descriptor ring\n");
973 memset(txdr
->buffer_info
, 0, size
);
975 /* round up to nearest 4K */
977 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
978 E1000_ROUNDUP(txdr
->size
, 4096);
980 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
983 vfree(txdr
->buffer_info
);
985 "Unable to allocate memory for the transmit descriptor ring\n");
989 /* Fix for errata 23, can't cross 64kB boundary */
990 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
991 void *olddesc
= txdr
->desc
;
992 dma_addr_t olddma
= txdr
->dma
;
993 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
994 "at %p\n", txdr
->size
, txdr
->desc
);
995 /* Try again, without freeing the previous */
996 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
998 /* Failed allocation, critical failure */
999 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1000 goto setup_tx_desc_die
;
1003 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1005 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1007 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1009 "Unable to allocate aligned memory "
1010 "for the transmit descriptor ring\n");
1011 vfree(txdr
->buffer_info
);
1014 /* Free old allocation, new allocation was successful */
1015 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1018 memset(txdr
->desc
, 0, txdr
->size
);
1020 txdr
->next_to_use
= 0;
1021 txdr
->next_to_clean
= 0;
1027 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1028 * @adapter: board private structure
1030 * Configure the Tx unit of the MAC after a reset.
1034 e1000_configure_tx(struct e1000_adapter
*adapter
)
1036 uint64_t tdba
= adapter
->tx_ring
.dma
;
1037 uint32_t tdlen
= adapter
->tx_ring
.count
* sizeof(struct e1000_tx_desc
);
1038 uint32_t tctl
, tipg
;
1040 E1000_WRITE_REG(&adapter
->hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1041 E1000_WRITE_REG(&adapter
->hw
, TDBAH
, (tdba
>> 32));
1043 E1000_WRITE_REG(&adapter
->hw
, TDLEN
, tdlen
);
1045 /* Setup the HW Tx Head and Tail descriptor pointers */
1047 E1000_WRITE_REG(&adapter
->hw
, TDH
, 0);
1048 E1000_WRITE_REG(&adapter
->hw
, TDT
, 0);
1050 /* Set the default values for the Tx Inter Packet Gap timer */
1052 switch (adapter
->hw
.mac_type
) {
1053 case e1000_82542_rev2_0
:
1054 case e1000_82542_rev2_1
:
1055 tipg
= DEFAULT_82542_TIPG_IPGT
;
1056 tipg
|= DEFAULT_82542_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1057 tipg
|= DEFAULT_82542_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1060 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
1061 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
)
1062 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1064 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1065 tipg
|= DEFAULT_82543_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1066 tipg
|= DEFAULT_82543_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1068 E1000_WRITE_REG(&adapter
->hw
, TIPG
, tipg
);
1070 /* Set the Tx Interrupt Delay register */
1072 E1000_WRITE_REG(&adapter
->hw
, TIDV
, adapter
->tx_int_delay
);
1073 if(adapter
->hw
.mac_type
>= e1000_82540
)
1074 E1000_WRITE_REG(&adapter
->hw
, TADV
, adapter
->tx_abs_int_delay
);
1076 /* Program the Transmit Control Register */
1078 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
1080 tctl
&= ~E1000_TCTL_CT
;
1081 tctl
|= E1000_TCTL_EN
| E1000_TCTL_PSP
|
1082 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1084 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
1086 e1000_config_collision_dist(&adapter
->hw
);
1088 /* Setup Transmit Descriptor Settings for eop descriptor */
1089 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1092 if(adapter
->hw
.mac_type
< e1000_82543
)
1093 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1095 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1097 /* Cache if we're 82544 running in PCI-X because we'll
1098 * need this to apply a workaround later in the send path. */
1099 if(adapter
->hw
.mac_type
== e1000_82544
&&
1100 adapter
->hw
.bus_type
== e1000_bus_type_pcix
)
1101 adapter
->pcix_82544
= 1;
1105 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1106 * @adapter: board private structure
1108 * Returns 0 on success, negative on failure
1112 e1000_setup_rx_resources(struct e1000_adapter
*adapter
)
1114 struct e1000_desc_ring
*rxdr
= &adapter
->rx_ring
;
1115 struct pci_dev
*pdev
= adapter
->pdev
;
1118 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1119 rxdr
->buffer_info
= vmalloc(size
);
1120 if(!rxdr
->buffer_info
) {
1122 "Unable to allocate memory for the receive descriptor ring\n");
1125 memset(rxdr
->buffer_info
, 0, size
);
1127 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1128 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1129 if(!rxdr
->ps_page
) {
1130 vfree(rxdr
->buffer_info
);
1132 "Unable to allocate memory for the receive descriptor ring\n");
1135 memset(rxdr
->ps_page
, 0, size
);
1137 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1138 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1139 if(!rxdr
->ps_page_dma
) {
1140 vfree(rxdr
->buffer_info
);
1141 kfree(rxdr
->ps_page
);
1143 "Unable to allocate memory for the receive descriptor ring\n");
1146 memset(rxdr
->ps_page_dma
, 0, size
);
1148 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1149 desc_len
= sizeof(struct e1000_rx_desc
);
1151 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1153 /* Round up to nearest 4K */
1155 rxdr
->size
= rxdr
->count
* desc_len
;
1156 E1000_ROUNDUP(rxdr
->size
, 4096);
1158 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1162 vfree(rxdr
->buffer_info
);
1163 kfree(rxdr
->ps_page
);
1164 kfree(rxdr
->ps_page_dma
);
1166 "Unable to allocate memory for the receive descriptor ring\n");
1170 /* Fix for errata 23, can't cross 64kB boundary */
1171 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1172 void *olddesc
= rxdr
->desc
;
1173 dma_addr_t olddma
= rxdr
->dma
;
1174 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1175 "at %p\n", rxdr
->size
, rxdr
->desc
);
1176 /* Try again, without freeing the previous */
1177 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1179 /* Failed allocation, critical failure */
1180 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1181 goto setup_rx_desc_die
;
1184 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1186 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1188 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1190 "Unable to allocate aligned memory "
1191 "for the receive descriptor ring\n");
1192 vfree(rxdr
->buffer_info
);
1193 kfree(rxdr
->ps_page
);
1194 kfree(rxdr
->ps_page_dma
);
1197 /* Free old allocation, new allocation was successful */
1198 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1201 memset(rxdr
->desc
, 0, rxdr
->size
);
1203 rxdr
->next_to_clean
= 0;
1204 rxdr
->next_to_use
= 0;
1210 * e1000_setup_rctl - configure the receive control registers
1211 * @adapter: Board private structure
1215 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1217 uint32_t rctl
, rfctl
;
1218 uint32_t psrctl
= 0;
1220 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1222 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1224 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1225 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1226 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1228 if(adapter
->hw
.tbi_compatibility_on
== 1)
1229 rctl
|= E1000_RCTL_SBP
;
1231 rctl
&= ~E1000_RCTL_SBP
;
1233 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1234 rctl
&= ~E1000_RCTL_LPE
;
1236 rctl
|= E1000_RCTL_LPE
;
1238 /* Setup buffer sizes */
1239 if(adapter
->hw
.mac_type
== e1000_82573
) {
1240 /* We can now specify buffers in 1K increments.
1241 * BSIZE and BSEX are ignored in this case. */
1242 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1244 rctl
&= ~E1000_RCTL_SZ_4096
;
1245 rctl
|= E1000_RCTL_BSEX
;
1246 switch (adapter
->rx_buffer_len
) {
1247 case E1000_RXBUFFER_2048
:
1249 rctl
|= E1000_RCTL_SZ_2048
;
1250 rctl
&= ~E1000_RCTL_BSEX
;
1252 case E1000_RXBUFFER_4096
:
1253 rctl
|= E1000_RCTL_SZ_4096
;
1255 case E1000_RXBUFFER_8192
:
1256 rctl
|= E1000_RCTL_SZ_8192
;
1258 case E1000_RXBUFFER_16384
:
1259 rctl
|= E1000_RCTL_SZ_16384
;
1264 #ifdef CONFIG_E1000_PACKET_SPLIT
1265 /* 82571 and greater support packet-split where the protocol
1266 * header is placed in skb->data and the packet data is
1267 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1268 * In the case of a non-split, skb->data is linearly filled,
1269 * followed by the page buffers. Therefore, skb->data is
1270 * sized to hold the largest protocol header.
1272 adapter
->rx_ps
= (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
1273 && (adapter
->netdev
->mtu
1274 < ((3 * PAGE_SIZE
) + adapter
->rx_ps_bsize0
));
1276 if(adapter
->rx_ps
) {
1277 /* Configure extra packet-split registers */
1278 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1279 rfctl
|= E1000_RFCTL_EXTEN
;
1280 /* disable IPv6 packet split support */
1281 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1282 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1284 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1286 psrctl
|= adapter
->rx_ps_bsize0
>>
1287 E1000_PSRCTL_BSIZE0_SHIFT
;
1288 psrctl
|= PAGE_SIZE
>>
1289 E1000_PSRCTL_BSIZE1_SHIFT
;
1290 psrctl
|= PAGE_SIZE
<<
1291 E1000_PSRCTL_BSIZE2_SHIFT
;
1292 psrctl
|= PAGE_SIZE
<<
1293 E1000_PSRCTL_BSIZE3_SHIFT
;
1295 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1298 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1302 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1303 * @adapter: board private structure
1305 * Configure the Rx unit of the MAC after a reset.
1309 e1000_configure_rx(struct e1000_adapter
*adapter
)
1311 uint64_t rdba
= adapter
->rx_ring
.dma
;
1312 uint32_t rdlen
, rctl
, rxcsum
;
1314 if(adapter
->rx_ps
) {
1315 rdlen
= adapter
->rx_ring
.count
*
1316 sizeof(union e1000_rx_desc_packet_split
);
1317 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1318 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1320 rdlen
= adapter
->rx_ring
.count
* sizeof(struct e1000_rx_desc
);
1321 adapter
->clean_rx
= e1000_clean_rx_irq
;
1322 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1325 /* disable receives while setting up the descriptors */
1326 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1327 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1329 /* set the Receive Delay Timer Register */
1330 E1000_WRITE_REG(&adapter
->hw
, RDTR
, adapter
->rx_int_delay
);
1332 if(adapter
->hw
.mac_type
>= e1000_82540
) {
1333 E1000_WRITE_REG(&adapter
->hw
, RADV
, adapter
->rx_abs_int_delay
);
1334 if(adapter
->itr
> 1)
1335 E1000_WRITE_REG(&adapter
->hw
, ITR
,
1336 1000000000 / (adapter
->itr
* 256));
1339 /* Setup the Base and Length of the Rx Descriptor Ring */
1340 E1000_WRITE_REG(&adapter
->hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1341 E1000_WRITE_REG(&adapter
->hw
, RDBAH
, (rdba
>> 32));
1343 E1000_WRITE_REG(&adapter
->hw
, RDLEN
, rdlen
);
1345 /* Setup the HW Rx Head and Tail Descriptor Pointers */
1346 E1000_WRITE_REG(&adapter
->hw
, RDH
, 0);
1347 E1000_WRITE_REG(&adapter
->hw
, RDT
, 0);
1349 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1350 if(adapter
->hw
.mac_type
>= e1000_82543
) {
1351 rxcsum
= E1000_READ_REG(&adapter
->hw
, RXCSUM
);
1352 if(adapter
->rx_csum
== TRUE
) {
1353 rxcsum
|= E1000_RXCSUM_TUOFL
;
1355 /* Enable 82573 IPv4 payload checksum for UDP fragments
1356 * Must be used in conjunction with packet-split. */
1357 if((adapter
->hw
.mac_type
> e1000_82547_rev_2
) &&
1359 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1362 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1363 /* don't need to clear IPPCSE as it defaults to 0 */
1365 E1000_WRITE_REG(&adapter
->hw
, RXCSUM
, rxcsum
);
1368 if (adapter
->hw
.mac_type
== e1000_82573
)
1369 E1000_WRITE_REG(&adapter
->hw
, ERT
, 0x0100);
1371 /* Enable Receives */
1372 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1376 * e1000_free_tx_resources - Free Tx Resources
1377 * @adapter: board private structure
1379 * Free all transmit software resources
1383 e1000_free_tx_resources(struct e1000_adapter
*adapter
)
1385 struct pci_dev
*pdev
= adapter
->pdev
;
1387 e1000_clean_tx_ring(adapter
);
1389 vfree(adapter
->tx_ring
.buffer_info
);
1390 adapter
->tx_ring
.buffer_info
= NULL
;
1392 pci_free_consistent(pdev
, adapter
->tx_ring
.size
,
1393 adapter
->tx_ring
.desc
, adapter
->tx_ring
.dma
);
1395 adapter
->tx_ring
.desc
= NULL
;
1399 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1400 struct e1000_buffer
*buffer_info
)
1402 if(buffer_info
->dma
) {
1403 pci_unmap_page(adapter
->pdev
,
1405 buffer_info
->length
,
1407 buffer_info
->dma
= 0;
1409 if(buffer_info
->skb
) {
1410 dev_kfree_skb_any(buffer_info
->skb
);
1411 buffer_info
->skb
= NULL
;
1416 * e1000_clean_tx_ring - Free Tx Buffers
1417 * @adapter: board private structure
1421 e1000_clean_tx_ring(struct e1000_adapter
*adapter
)
1423 struct e1000_desc_ring
*tx_ring
= &adapter
->tx_ring
;
1424 struct e1000_buffer
*buffer_info
;
1428 /* Free all the Tx ring sk_buffs */
1430 if (likely(adapter
->previous_buffer_info
.skb
!= NULL
)) {
1431 e1000_unmap_and_free_tx_resource(adapter
,
1432 &adapter
->previous_buffer_info
);
1435 for(i
= 0; i
< tx_ring
->count
; i
++) {
1436 buffer_info
= &tx_ring
->buffer_info
[i
];
1437 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1440 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1441 memset(tx_ring
->buffer_info
, 0, size
);
1443 /* Zero out the descriptor ring */
1445 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1447 tx_ring
->next_to_use
= 0;
1448 tx_ring
->next_to_clean
= 0;
1450 E1000_WRITE_REG(&adapter
->hw
, TDH
, 0);
1451 E1000_WRITE_REG(&adapter
->hw
, TDT
, 0);
1455 * e1000_free_rx_resources - Free Rx Resources
1456 * @adapter: board private structure
1458 * Free all receive software resources
1462 e1000_free_rx_resources(struct e1000_adapter
*adapter
)
1464 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
1465 struct pci_dev
*pdev
= adapter
->pdev
;
1467 e1000_clean_rx_ring(adapter
);
1469 vfree(rx_ring
->buffer_info
);
1470 rx_ring
->buffer_info
= NULL
;
1471 kfree(rx_ring
->ps_page
);
1472 rx_ring
->ps_page
= NULL
;
1473 kfree(rx_ring
->ps_page_dma
);
1474 rx_ring
->ps_page_dma
= NULL
;
1476 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1478 rx_ring
->desc
= NULL
;
1482 * e1000_clean_rx_ring - Free Rx Buffers
1483 * @adapter: board private structure
1487 e1000_clean_rx_ring(struct e1000_adapter
*adapter
)
1489 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
1490 struct e1000_buffer
*buffer_info
;
1491 struct e1000_ps_page
*ps_page
;
1492 struct e1000_ps_page_dma
*ps_page_dma
;
1493 struct pci_dev
*pdev
= adapter
->pdev
;
1497 /* Free all the Rx ring sk_buffs */
1499 for(i
= 0; i
< rx_ring
->count
; i
++) {
1500 buffer_info
= &rx_ring
->buffer_info
[i
];
1501 if(buffer_info
->skb
) {
1502 ps_page
= &rx_ring
->ps_page
[i
];
1503 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1504 pci_unmap_single(pdev
,
1506 buffer_info
->length
,
1507 PCI_DMA_FROMDEVICE
);
1509 dev_kfree_skb(buffer_info
->skb
);
1510 buffer_info
->skb
= NULL
;
1512 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1513 if(!ps_page
->ps_page
[j
]) break;
1514 pci_unmap_single(pdev
,
1515 ps_page_dma
->ps_page_dma
[j
],
1516 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1517 ps_page_dma
->ps_page_dma
[j
] = 0;
1518 put_page(ps_page
->ps_page
[j
]);
1519 ps_page
->ps_page
[j
] = NULL
;
1524 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1525 memset(rx_ring
->buffer_info
, 0, size
);
1526 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1527 memset(rx_ring
->ps_page
, 0, size
);
1528 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1529 memset(rx_ring
->ps_page_dma
, 0, size
);
1531 /* Zero out the descriptor ring */
1533 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1535 rx_ring
->next_to_clean
= 0;
1536 rx_ring
->next_to_use
= 0;
1538 E1000_WRITE_REG(&adapter
->hw
, RDH
, 0);
1539 E1000_WRITE_REG(&adapter
->hw
, RDT
, 0);
1542 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1543 * and memory write and invalidate disabled for certain operations
1546 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
1548 struct net_device
*netdev
= adapter
->netdev
;
1551 e1000_pci_clear_mwi(&adapter
->hw
);
1553 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1554 rctl
|= E1000_RCTL_RST
;
1555 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1556 E1000_WRITE_FLUSH(&adapter
->hw
);
1559 if(netif_running(netdev
))
1560 e1000_clean_rx_ring(adapter
);
1564 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
1566 struct net_device
*netdev
= adapter
->netdev
;
1569 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1570 rctl
&= ~E1000_RCTL_RST
;
1571 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1572 E1000_WRITE_FLUSH(&adapter
->hw
);
1575 if(adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
1576 e1000_pci_set_mwi(&adapter
->hw
);
1578 if(netif_running(netdev
)) {
1579 e1000_configure_rx(adapter
);
1580 e1000_alloc_rx_buffers(adapter
);
1585 * e1000_set_mac - Change the Ethernet Address of the NIC
1586 * @netdev: network interface device structure
1587 * @p: pointer to an address structure
1589 * Returns 0 on success, negative on failure
1593 e1000_set_mac(struct net_device
*netdev
, void *p
)
1595 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1596 struct sockaddr
*addr
= p
;
1598 if(!is_valid_ether_addr(addr
->sa_data
))
1599 return -EADDRNOTAVAIL
;
1601 /* 82542 2.0 needs to be in reset to write receive address registers */
1603 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
1604 e1000_enter_82542_rst(adapter
);
1606 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
1607 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
1609 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
1611 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
1612 e1000_leave_82542_rst(adapter
);
1618 * e1000_set_multi - Multicast and Promiscuous mode set
1619 * @netdev: network interface device structure
1621 * The set_multi entry point is called whenever the multicast address
1622 * list or the network interface flags are updated. This routine is
1623 * responsible for configuring the hardware for proper multicast,
1624 * promiscuous mode, and all-multi behavior.
1628 e1000_set_multi(struct net_device
*netdev
)
1630 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1631 struct e1000_hw
*hw
= &adapter
->hw
;
1632 struct dev_mc_list
*mc_ptr
;
1633 unsigned long flags
;
1635 uint32_t hash_value
;
1638 spin_lock_irqsave(&adapter
->tx_lock
, flags
);
1640 /* Check for Promiscuous and All Multicast modes */
1642 rctl
= E1000_READ_REG(hw
, RCTL
);
1644 if(netdev
->flags
& IFF_PROMISC
) {
1645 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
1646 } else if(netdev
->flags
& IFF_ALLMULTI
) {
1647 rctl
|= E1000_RCTL_MPE
;
1648 rctl
&= ~E1000_RCTL_UPE
;
1650 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
1653 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1655 /* 82542 2.0 needs to be in reset to write receive address registers */
1657 if(hw
->mac_type
== e1000_82542_rev2_0
)
1658 e1000_enter_82542_rst(adapter
);
1660 /* load the first 14 multicast address into the exact filters 1-14
1661 * RAR 0 is used for the station MAC adddress
1662 * if there are not 14 addresses, go ahead and clear the filters
1664 mc_ptr
= netdev
->mc_list
;
1666 for(i
= 1; i
< E1000_RAR_ENTRIES
; i
++) {
1668 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
1669 mc_ptr
= mc_ptr
->next
;
1671 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
1672 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
1676 /* clear the old settings from the multicast hash table */
1678 for(i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
1679 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
1681 /* load any remaining addresses into the hash table */
1683 for(; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
1684 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
1685 e1000_mta_set(hw
, hash_value
);
1688 if(hw
->mac_type
== e1000_82542_rev2_0
)
1689 e1000_leave_82542_rst(adapter
);
1691 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
1694 /* Need to wait a few seconds after link up to get diagnostic information from
1698 e1000_update_phy_info(unsigned long data
)
1700 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
1701 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
1705 * e1000_82547_tx_fifo_stall - Timer Call-back
1706 * @data: pointer to adapter cast into an unsigned long
1710 e1000_82547_tx_fifo_stall(unsigned long data
)
1712 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
1713 struct net_device
*netdev
= adapter
->netdev
;
1716 if(atomic_read(&adapter
->tx_fifo_stall
)) {
1717 if((E1000_READ_REG(&adapter
->hw
, TDT
) ==
1718 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
1719 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
1720 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
1721 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
1722 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
1723 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
1724 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
1725 tctl
& ~E1000_TCTL_EN
);
1726 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
1727 adapter
->tx_head_addr
);
1728 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
1729 adapter
->tx_head_addr
);
1730 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
1731 adapter
->tx_head_addr
);
1732 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
1733 adapter
->tx_head_addr
);
1734 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
1735 E1000_WRITE_FLUSH(&adapter
->hw
);
1737 adapter
->tx_fifo_head
= 0;
1738 atomic_set(&adapter
->tx_fifo_stall
, 0);
1739 netif_wake_queue(netdev
);
1741 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
1747 * e1000_watchdog - Timer Call-back
1748 * @data: pointer to adapter cast into an unsigned long
1751 e1000_watchdog(unsigned long data
)
1753 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
1755 /* Do the rest outside of interrupt context */
1756 schedule_work(&adapter
->watchdog_task
);
1760 e1000_watchdog_task(struct e1000_adapter
*adapter
)
1762 struct net_device
*netdev
= adapter
->netdev
;
1763 struct e1000_desc_ring
*txdr
= &adapter
->tx_ring
;
1766 e1000_check_for_link(&adapter
->hw
);
1767 if (adapter
->hw
.mac_type
== e1000_82573
) {
1768 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
1769 if(adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
1770 e1000_update_mng_vlan(adapter
);
1773 if((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
1774 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
1775 link
= !adapter
->hw
.serdes_link_down
;
1777 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
1780 if(!netif_carrier_ok(netdev
)) {
1781 e1000_get_speed_and_duplex(&adapter
->hw
,
1782 &adapter
->link_speed
,
1783 &adapter
->link_duplex
);
1785 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
1786 adapter
->link_speed
,
1787 adapter
->link_duplex
== FULL_DUPLEX
?
1788 "Full Duplex" : "Half Duplex");
1790 netif_carrier_on(netdev
);
1791 netif_wake_queue(netdev
);
1792 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
1793 adapter
->smartspeed
= 0;
1796 if(netif_carrier_ok(netdev
)) {
1797 adapter
->link_speed
= 0;
1798 adapter
->link_duplex
= 0;
1799 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
1800 netif_carrier_off(netdev
);
1801 netif_stop_queue(netdev
);
1802 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
1805 e1000_smartspeed(adapter
);
1808 e1000_update_stats(adapter
);
1810 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
1811 adapter
->tpt_old
= adapter
->stats
.tpt
;
1812 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
1813 adapter
->colc_old
= adapter
->stats
.colc
;
1815 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
1816 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
1817 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
1818 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
1820 e1000_update_adaptive(&adapter
->hw
);
1822 if(!netif_carrier_ok(netdev
)) {
1823 if(E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
1824 /* We've lost link, so the controller stops DMA,
1825 * but we've got queued Tx work that's never going
1826 * to get done, so reset controller to flush Tx.
1827 * (Do the reset outside of interrupt context). */
1828 schedule_work(&adapter
->tx_timeout_task
);
1832 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
1833 if(adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
1834 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
1835 * asymmetrical Tx or Rx gets ITR=8000; everyone
1836 * else is between 2000-8000. */
1837 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
1838 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
1839 adapter
->gotcl
- adapter
->gorcl
:
1840 adapter
->gorcl
- adapter
->gotcl
) / 10000;
1841 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
1842 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
1845 /* Cause software interrupt to ensure rx ring is cleaned */
1846 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
1848 /* Force detection of hung controller every watchdog period */
1849 adapter
->detect_tx_hung
= TRUE
;
1851 /* Reset the timer */
1852 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
1855 #define E1000_TX_FLAGS_CSUM 0x00000001
1856 #define E1000_TX_FLAGS_VLAN 0x00000002
1857 #define E1000_TX_FLAGS_TSO 0x00000004
1858 #define E1000_TX_FLAGS_IPV4 0x00000008
1859 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
1860 #define E1000_TX_FLAGS_VLAN_SHIFT 16
1863 e1000_tso(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
1866 struct e1000_context_desc
*context_desc
;
1868 uint32_t cmd_length
= 0;
1869 uint16_t ipcse
= 0, tucse
, mss
;
1870 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
1873 if(skb_shinfo(skb
)->tso_size
) {
1874 if (skb_header_cloned(skb
)) {
1875 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
1880 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
1881 mss
= skb_shinfo(skb
)->tso_size
;
1882 if(skb
->protocol
== ntohs(ETH_P_IP
)) {
1883 skb
->nh
.iph
->tot_len
= 0;
1884 skb
->nh
.iph
->check
= 0;
1886 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
1891 cmd_length
= E1000_TXD_CMD_IP
;
1892 ipcse
= skb
->h
.raw
- skb
->data
- 1;
1893 #ifdef NETIF_F_TSO_IPV6
1894 } else if(skb
->protocol
== ntohs(ETH_P_IPV6
)) {
1895 skb
->nh
.ipv6h
->payload_len
= 0;
1897 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
1898 &skb
->nh
.ipv6h
->daddr
,
1905 ipcss
= skb
->nh
.raw
- skb
->data
;
1906 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
1907 tucss
= skb
->h
.raw
- skb
->data
;
1908 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
1911 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
1912 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
1914 i
= adapter
->tx_ring
.next_to_use
;
1915 context_desc
= E1000_CONTEXT_DESC(adapter
->tx_ring
, i
);
1917 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
1918 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
1919 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
1920 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
1921 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
1922 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
1923 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
1924 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
1925 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
1927 if(++i
== adapter
->tx_ring
.count
) i
= 0;
1928 adapter
->tx_ring
.next_to_use
= i
;
1937 static inline boolean_t
1938 e1000_tx_csum(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
1940 struct e1000_context_desc
*context_desc
;
1944 if(likely(skb
->ip_summed
== CHECKSUM_HW
)) {
1945 css
= skb
->h
.raw
- skb
->data
;
1947 i
= adapter
->tx_ring
.next_to_use
;
1948 context_desc
= E1000_CONTEXT_DESC(adapter
->tx_ring
, i
);
1950 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
1951 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
1952 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
1953 context_desc
->tcp_seg_setup
.data
= 0;
1954 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
1956 if(unlikely(++i
== adapter
->tx_ring
.count
)) i
= 0;
1957 adapter
->tx_ring
.next_to_use
= i
;
1965 #define E1000_MAX_TXD_PWR 12
1966 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
1969 e1000_tx_map(struct e1000_adapter
*adapter
, struct sk_buff
*skb
,
1970 unsigned int first
, unsigned int max_per_txd
,
1971 unsigned int nr_frags
, unsigned int mss
)
1973 struct e1000_desc_ring
*tx_ring
= &adapter
->tx_ring
;
1974 struct e1000_buffer
*buffer_info
;
1975 unsigned int len
= skb
->len
;
1976 unsigned int offset
= 0, size
, count
= 0, i
;
1978 len
-= skb
->data_len
;
1980 i
= tx_ring
->next_to_use
;
1983 buffer_info
= &tx_ring
->buffer_info
[i
];
1984 size
= min(len
, max_per_txd
);
1986 /* Workaround for premature desc write-backs
1987 * in TSO mode. Append 4-byte sentinel desc */
1988 if(unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
1991 /* work-around for errata 10 and it applies
1992 * to all controllers in PCI-X mode
1993 * The fix is to make sure that the first descriptor of a
1994 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
1996 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
1997 (size
> 2015) && count
== 0))
2000 /* Workaround for potential 82544 hang in PCI-X. Avoid
2001 * terminating buffers within evenly-aligned dwords. */
2002 if(unlikely(adapter
->pcix_82544
&&
2003 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2007 buffer_info
->length
= size
;
2009 pci_map_single(adapter
->pdev
,
2013 buffer_info
->time_stamp
= jiffies
;
2018 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2021 for(f
= 0; f
< nr_frags
; f
++) {
2022 struct skb_frag_struct
*frag
;
2024 frag
= &skb_shinfo(skb
)->frags
[f
];
2026 offset
= frag
->page_offset
;
2029 buffer_info
= &tx_ring
->buffer_info
[i
];
2030 size
= min(len
, max_per_txd
);
2032 /* Workaround for premature desc write-backs
2033 * in TSO mode. Append 4-byte sentinel desc */
2034 if(unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2037 /* Workaround for potential 82544 hang in PCI-X.
2038 * Avoid terminating buffers within evenly-aligned
2040 if(unlikely(adapter
->pcix_82544
&&
2041 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2045 buffer_info
->length
= size
;
2047 pci_map_page(adapter
->pdev
,
2052 buffer_info
->time_stamp
= jiffies
;
2057 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2061 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2062 tx_ring
->buffer_info
[i
].skb
= skb
;
2063 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2069 e1000_tx_queue(struct e1000_adapter
*adapter
, int count
, int tx_flags
)
2071 struct e1000_desc_ring
*tx_ring
= &adapter
->tx_ring
;
2072 struct e1000_tx_desc
*tx_desc
= NULL
;
2073 struct e1000_buffer
*buffer_info
;
2074 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2077 if(likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2078 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2080 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2082 if(likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2083 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2086 if(likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2087 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2088 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2091 if(unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2092 txd_lower
|= E1000_TXD_CMD_VLE
;
2093 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2096 i
= tx_ring
->next_to_use
;
2099 buffer_info
= &tx_ring
->buffer_info
[i
];
2100 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2101 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2102 tx_desc
->lower
.data
=
2103 cpu_to_le32(txd_lower
| buffer_info
->length
);
2104 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2105 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2108 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2110 /* Force memory writes to complete before letting h/w
2111 * know there are new descriptors to fetch. (Only
2112 * applicable for weak-ordered memory model archs,
2113 * such as IA-64). */
2116 tx_ring
->next_to_use
= i
;
2117 E1000_WRITE_REG(&adapter
->hw
, TDT
, i
);
2121 * 82547 workaround to avoid controller hang in half-duplex environment.
2122 * The workaround is to avoid queuing a large packet that would span
2123 * the internal Tx FIFO ring boundary by notifying the stack to resend
2124 * the packet at a later time. This gives the Tx FIFO an opportunity to
2125 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2126 * to the beginning of the Tx FIFO.
2129 #define E1000_FIFO_HDR 0x10
2130 #define E1000_82547_PAD_LEN 0x3E0
2133 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2135 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2136 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2138 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2140 if(adapter
->link_duplex
!= HALF_DUPLEX
)
2141 goto no_fifo_stall_required
;
2143 if(atomic_read(&adapter
->tx_fifo_stall
))
2146 if(skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2147 atomic_set(&adapter
->tx_fifo_stall
, 1);
2151 no_fifo_stall_required
:
2152 adapter
->tx_fifo_head
+= skb_fifo_len
;
2153 if(adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2154 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2158 #define MINIMUM_DHCP_PACKET_SIZE 282
2160 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2162 struct e1000_hw
*hw
= &adapter
->hw
;
2163 uint16_t length
, offset
;
2164 if(vlan_tx_tag_present(skb
)) {
2165 if(!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2166 ( adapter
->hw
.mng_cookie
.status
&
2167 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2170 if(htons(ETH_P_IP
) == skb
->protocol
) {
2171 const struct iphdr
*ip
= skb
->nh
.iph
;
2172 if(IPPROTO_UDP
== ip
->protocol
) {
2173 struct udphdr
*udp
= (struct udphdr
*)(skb
->h
.uh
);
2174 if(ntohs(udp
->dest
) == 67) {
2175 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2176 length
= skb
->len
- offset
;
2178 return e1000_mng_write_dhcp_info(hw
,
2179 (uint8_t *)udp
+ 8, length
);
2182 } else if((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2183 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2184 if((htons(ETH_P_IP
) == eth
->h_proto
)) {
2185 const struct iphdr
*ip
=
2186 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2187 if(IPPROTO_UDP
== ip
->protocol
) {
2188 struct udphdr
*udp
=
2189 (struct udphdr
*)((uint8_t *)ip
+
2191 if(ntohs(udp
->dest
) == 67) {
2192 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2193 length
= skb
->len
- offset
;
2195 return e1000_mng_write_dhcp_info(hw
,
2205 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2207 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2209 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2210 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2211 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2212 unsigned int tx_flags
= 0;
2213 unsigned int len
= skb
->len
;
2214 unsigned long flags
;
2215 unsigned int nr_frags
= 0;
2216 unsigned int mss
= 0;
2220 len
-= skb
->data_len
;
2222 if(unlikely(skb
->len
<= 0)) {
2223 dev_kfree_skb_any(skb
);
2224 return NETDEV_TX_OK
;
2228 mss
= skb_shinfo(skb
)->tso_size
;
2229 /* The controller does a simple calculation to
2230 * make sure there is enough room in the FIFO before
2231 * initiating the DMA for each buffer. The calc is:
2232 * 4 = ceil(buffer len/mss). To make sure we don't
2233 * overrun the FIFO, adjust the max buffer len if mss
2236 max_per_txd
= min(mss
<< 2, max_per_txd
);
2237 max_txd_pwr
= fls(max_per_txd
) - 1;
2240 if((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2244 if(skb
->ip_summed
== CHECKSUM_HW
)
2247 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2249 if(adapter
->pcix_82544
)
2252 /* work-around for errata 10 and it applies to all controllers
2253 * in PCI-X mode, so add one more descriptor to the count
2255 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2259 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2260 for(f
= 0; f
< nr_frags
; f
++)
2261 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2263 if(adapter
->pcix_82544
)
2266 local_irq_save(flags
);
2267 if (!spin_trylock(&adapter
->tx_lock
)) {
2268 /* Collision - tell upper layer to requeue */
2269 local_irq_restore(flags
);
2270 return NETDEV_TX_LOCKED
;
2272 if(adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2273 e1000_transfer_dhcp_info(adapter
, skb
);
2276 /* need: count + 2 desc gap to keep tail from touching
2277 * head, otherwise try next time */
2278 if(unlikely(E1000_DESC_UNUSED(&adapter
->tx_ring
) < count
+ 2)) {
2279 netif_stop_queue(netdev
);
2280 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2281 return NETDEV_TX_BUSY
;
2284 if(unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2285 if(unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2286 netif_stop_queue(netdev
);
2287 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2288 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2289 return NETDEV_TX_BUSY
;
2293 if(unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2294 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2295 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2298 first
= adapter
->tx_ring
.next_to_use
;
2300 tso
= e1000_tso(adapter
, skb
);
2302 dev_kfree_skb_any(skb
);
2303 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2304 return NETDEV_TX_OK
;
2308 tx_flags
|= E1000_TX_FLAGS_TSO
;
2309 else if(likely(e1000_tx_csum(adapter
, skb
)))
2310 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2312 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2313 * 82573 hardware supports TSO capabilities for IPv6 as well...
2314 * no longer assume, we must. */
2315 if(likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2316 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2318 e1000_tx_queue(adapter
,
2319 e1000_tx_map(adapter
, skb
, first
, max_per_txd
, nr_frags
, mss
),
2322 netdev
->trans_start
= jiffies
;
2324 /* Make sure there is space in the ring for the next send. */
2325 if(unlikely(E1000_DESC_UNUSED(&adapter
->tx_ring
) < MAX_SKB_FRAGS
+ 2))
2326 netif_stop_queue(netdev
);
2328 spin_unlock_irqrestore(&adapter
->tx_lock
, flags
);
2329 return NETDEV_TX_OK
;
2333 * e1000_tx_timeout - Respond to a Tx Hang
2334 * @netdev: network interface device structure
2338 e1000_tx_timeout(struct net_device
*netdev
)
2340 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2342 /* Do the reset outside of interrupt context */
2343 schedule_work(&adapter
->tx_timeout_task
);
2347 e1000_tx_timeout_task(struct net_device
*netdev
)
2349 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2351 e1000_down(adapter
);
2356 * e1000_get_stats - Get System Network Statistics
2357 * @netdev: network interface device structure
2359 * Returns the address of the device statistics structure.
2360 * The statistics are actually updated from the timer callback.
2363 static struct net_device_stats
*
2364 e1000_get_stats(struct net_device
*netdev
)
2366 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2368 e1000_update_stats(adapter
);
2369 return &adapter
->net_stats
;
2373 * e1000_change_mtu - Change the Maximum Transfer Unit
2374 * @netdev: network interface device structure
2375 * @new_mtu: new value for maximum frame size
2377 * Returns 0 on success, negative on failure
2381 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2383 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2384 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2386 if((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2387 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2388 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2392 #define MAX_STD_JUMBO_FRAME_SIZE 9216
2393 /* might want this to be bigger enum check... */
2394 if (adapter
->hw
.mac_type
== e1000_82573
&&
2395 max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2396 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2401 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2402 adapter
->rx_buffer_len
= max_frame
;
2403 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
2405 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
2406 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
2407 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2412 if(max_frame
<= E1000_RXBUFFER_2048
) {
2413 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
2414 } else if(max_frame
<= E1000_RXBUFFER_4096
) {
2415 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
2416 } else if(max_frame
<= E1000_RXBUFFER_8192
) {
2417 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
2418 } else if(max_frame
<= E1000_RXBUFFER_16384
) {
2419 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
2424 netdev
->mtu
= new_mtu
;
2426 if(netif_running(netdev
)) {
2427 e1000_down(adapter
);
2431 adapter
->hw
.max_frame_size
= max_frame
;
2437 * e1000_update_stats - Update the board statistics counters
2438 * @adapter: board private structure
2442 e1000_update_stats(struct e1000_adapter
*adapter
)
2444 struct e1000_hw
*hw
= &adapter
->hw
;
2445 unsigned long flags
;
2448 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2450 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2452 /* these counters are modified from e1000_adjust_tbi_stats,
2453 * called from the interrupt context, so they must only
2454 * be written while holding adapter->stats_lock
2457 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
2458 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
2459 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
2460 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
2461 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
2462 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
2463 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
2464 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
2465 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
2466 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
2467 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
2468 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
2469 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
2471 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
2472 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
2473 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
2474 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
2475 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
2476 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
2477 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
2478 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
2479 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
2480 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
2481 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
2482 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
2483 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
2484 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
2485 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
2486 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
2487 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
2488 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
2489 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
2490 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
2491 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
2492 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
2493 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
2494 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
2495 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
2496 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
2497 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
2498 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
2499 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
2500 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
2501 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
2502 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
2503 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
2504 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
2506 /* used for adaptive IFS */
2508 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
2509 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
2510 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
2511 adapter
->stats
.colc
+= hw
->collision_delta
;
2513 if(hw
->mac_type
>= e1000_82543
) {
2514 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
2515 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
2516 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
2517 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
2518 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
2519 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
2521 if(hw
->mac_type
> e1000_82547_rev_2
) {
2522 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
2523 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
2524 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
2525 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
2526 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
2527 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
2528 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
2529 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
2530 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
2533 /* Fill out the OS statistics structure */
2535 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
2536 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
2537 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
2538 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
2539 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
2540 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
2544 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
2545 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
2546 adapter
->stats
.rlec
+ adapter
->stats
.mpc
+
2547 adapter
->stats
.cexterr
;
2548 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
2549 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
2550 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
2551 adapter
->net_stats
.rx_fifo_errors
= adapter
->stats
.mpc
;
2552 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
2556 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
2557 adapter
->stats
.latecol
;
2558 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
2559 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
2560 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
2562 /* Tx Dropped needs to be maintained elsewhere */
2566 if(hw
->media_type
== e1000_media_type_copper
) {
2567 if((adapter
->link_speed
== SPEED_1000
) &&
2568 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
2569 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
2570 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
2573 if((hw
->mac_type
<= e1000_82546
) &&
2574 (hw
->phy_type
== e1000_phy_m88
) &&
2575 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
2576 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
2579 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
2583 * e1000_intr - Interrupt Handler
2584 * @irq: interrupt number
2585 * @data: pointer to a network interface device structure
2586 * @pt_regs: CPU registers structure
2590 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
2592 struct net_device
*netdev
= data
;
2593 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2594 struct e1000_hw
*hw
= &adapter
->hw
;
2595 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
2596 #ifndef CONFIG_E1000_NAPI
2601 return IRQ_NONE
; /* Not our interrupt */
2603 if(unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
2604 hw
->get_link_status
= 1;
2605 mod_timer(&adapter
->watchdog_timer
, jiffies
);
2608 #ifdef CONFIG_E1000_NAPI
2609 if(likely(netif_rx_schedule_prep(netdev
))) {
2611 /* Disable interrupts and register for poll. The flush
2612 of the posted write is intentionally left out.
2615 atomic_inc(&adapter
->irq_sem
);
2616 E1000_WRITE_REG(hw
, IMC
, ~0);
2617 __netif_rx_schedule(netdev
);
2620 /* Writing IMC and IMS is needed for 82547.
2621 Due to Hub Link bus being occupied, an interrupt
2622 de-assertion message is not able to be sent.
2623 When an interrupt assertion message is generated later,
2624 two messages are re-ordered and sent out.
2625 That causes APIC to think 82547 is in de-assertion
2626 state, while 82547 is in assertion state, resulting
2627 in dead lock. Writing IMC forces 82547 into
2630 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
){
2631 atomic_inc(&adapter
->irq_sem
);
2632 E1000_WRITE_REG(hw
, IMC
, ~0);
2635 for(i
= 0; i
< E1000_MAX_INTR
; i
++)
2636 if(unlikely(!adapter
->clean_rx(adapter
) &
2637 !e1000_clean_tx_irq(adapter
)))
2640 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
2641 e1000_irq_enable(adapter
);
2647 #ifdef CONFIG_E1000_NAPI
2649 * e1000_clean - NAPI Rx polling callback
2650 * @adapter: board private structure
2654 e1000_clean(struct net_device
*netdev
, int *budget
)
2656 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2657 int work_to_do
= min(*budget
, netdev
->quota
);
2661 tx_cleaned
= e1000_clean_tx_irq(adapter
);
2662 adapter
->clean_rx(adapter
, &work_done
, work_to_do
);
2664 *budget
-= work_done
;
2665 netdev
->quota
-= work_done
;
2667 if ((!tx_cleaned
&& (work_done
== 0)) || !netif_running(netdev
)) {
2668 /* If no Tx and not enough Rx work done, exit the polling mode */
2669 netif_rx_complete(netdev
);
2670 e1000_irq_enable(adapter
);
2679 * e1000_clean_tx_irq - Reclaim resources after transmit completes
2680 * @adapter: board private structure
2684 e1000_clean_tx_irq(struct e1000_adapter
*adapter
)
2686 struct e1000_desc_ring
*tx_ring
= &adapter
->tx_ring
;
2687 struct net_device
*netdev
= adapter
->netdev
;
2688 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
2689 struct e1000_buffer
*buffer_info
;
2690 unsigned int i
, eop
;
2691 boolean_t cleaned
= FALSE
;
2693 i
= tx_ring
->next_to_clean
;
2694 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
2695 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
2697 while(eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
2698 /* Premature writeback of Tx descriptors clear (free buffers
2699 * and unmap pci_mapping) previous_buffer_info */
2700 if (likely(adapter
->previous_buffer_info
.skb
!= NULL
)) {
2701 e1000_unmap_and_free_tx_resource(adapter
,
2702 &adapter
->previous_buffer_info
);
2705 for(cleaned
= FALSE
; !cleaned
; ) {
2706 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2707 buffer_info
= &tx_ring
->buffer_info
[i
];
2708 cleaned
= (i
== eop
);
2711 if (!(netdev
->features
& NETIF_F_TSO
)) {
2713 e1000_unmap_and_free_tx_resource(adapter
,
2718 memcpy(&adapter
->previous_buffer_info
,
2720 sizeof(struct e1000_buffer
));
2721 memset(buffer_info
, 0,
2722 sizeof(struct e1000_buffer
));
2724 e1000_unmap_and_free_tx_resource(
2725 adapter
, buffer_info
);
2730 tx_desc
->buffer_addr
= 0;
2731 tx_desc
->lower
.data
= 0;
2732 tx_desc
->upper
.data
= 0;
2734 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2737 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
2738 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
2741 tx_ring
->next_to_clean
= i
;
2743 spin_lock(&adapter
->tx_lock
);
2745 if(unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
2746 netif_carrier_ok(netdev
)))
2747 netif_wake_queue(netdev
);
2749 spin_unlock(&adapter
->tx_lock
);
2750 if(adapter
->detect_tx_hung
) {
2752 /* Detect a transmit hang in hardware, this serializes the
2753 * check with the clearing of time_stamp and movement of i */
2754 adapter
->detect_tx_hung
= FALSE
;
2755 if (tx_ring
->buffer_info
[i
].dma
&&
2756 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+ HZ
)
2757 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
2758 E1000_STATUS_TXOFF
)) {
2760 /* detected Tx unit hang */
2761 i
= tx_ring
->next_to_clean
;
2762 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
2763 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
2764 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
2767 " next_to_use <%x>\n"
2768 " next_to_clean <%x>\n"
2769 "buffer_info[next_to_clean]\n"
2771 " time_stamp <%lx>\n"
2772 " next_to_watch <%x>\n"
2774 " next_to_watch.status <%x>\n",
2775 E1000_READ_REG(&adapter
->hw
, TDH
),
2776 E1000_READ_REG(&adapter
->hw
, TDT
),
2777 tx_ring
->next_to_use
,
2779 (unsigned long long)tx_ring
->buffer_info
[i
].dma
,
2780 tx_ring
->buffer_info
[i
].time_stamp
,
2783 eop_desc
->upper
.fields
.status
);
2784 netif_stop_queue(netdev
);
2789 if( unlikely(!(eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
2790 time_after(jiffies
, adapter
->previous_buffer_info
.time_stamp
+ HZ
)))
2791 e1000_unmap_and_free_tx_resource(
2792 adapter
, &adapter
->previous_buffer_info
);
2799 * e1000_rx_checksum - Receive Checksum Offload for 82543
2800 * @adapter: board private structure
2801 * @status_err: receive descriptor status and error fields
2802 * @csum: receive descriptor csum field
2803 * @sk_buff: socket buffer with received data
2807 e1000_rx_checksum(struct e1000_adapter
*adapter
,
2808 uint32_t status_err
, uint32_t csum
,
2809 struct sk_buff
*skb
)
2811 uint16_t status
= (uint16_t)status_err
;
2812 uint8_t errors
= (uint8_t)(status_err
>> 24);
2813 skb
->ip_summed
= CHECKSUM_NONE
;
2815 /* 82543 or newer only */
2816 if(unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
2817 /* Ignore Checksum bit is set */
2818 if(unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
2819 /* TCP/UDP checksum error bit is set */
2820 if(unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
2821 /* let the stack verify checksum errors */
2822 adapter
->hw_csum_err
++;
2825 /* TCP/UDP Checksum has not been calculated */
2826 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
2827 if(!(status
& E1000_RXD_STAT_TCPCS
))
2830 if(!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
2833 /* It must be a TCP or UDP packet with a valid checksum */
2834 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
2835 /* TCP checksum is good */
2836 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
2837 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2838 /* IP fragment with UDP payload */
2839 /* Hardware complements the payload checksum, so we undo it
2840 * and then put the value in host order for further stack use.
2842 csum
= ntohl(csum
^ 0xFFFF);
2844 skb
->ip_summed
= CHECKSUM_HW
;
2846 adapter
->hw_csum_good
++;
2850 * e1000_clean_rx_irq - Send received data up the network stack; legacy
2851 * @adapter: board private structure
2855 #ifdef CONFIG_E1000_NAPI
2856 e1000_clean_rx_irq(struct e1000_adapter
*adapter
, int *work_done
,
2859 e1000_clean_rx_irq(struct e1000_adapter
*adapter
)
2862 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
2863 struct net_device
*netdev
= adapter
->netdev
;
2864 struct pci_dev
*pdev
= adapter
->pdev
;
2865 struct e1000_rx_desc
*rx_desc
;
2866 struct e1000_buffer
*buffer_info
;
2867 struct sk_buff
*skb
;
2868 unsigned long flags
;
2872 boolean_t cleaned
= FALSE
;
2874 i
= rx_ring
->next_to_clean
;
2875 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
2877 while(rx_desc
->status
& E1000_RXD_STAT_DD
) {
2878 buffer_info
= &rx_ring
->buffer_info
[i
];
2879 #ifdef CONFIG_E1000_NAPI
2880 if(*work_done
>= work_to_do
)
2886 pci_unmap_single(pdev
,
2888 buffer_info
->length
,
2889 PCI_DMA_FROMDEVICE
);
2891 skb
= buffer_info
->skb
;
2892 length
= le16_to_cpu(rx_desc
->length
);
2894 if(unlikely(!(rx_desc
->status
& E1000_RXD_STAT_EOP
))) {
2895 /* All receives must fit into a single buffer */
2896 E1000_DBG("%s: Receive packet consumed multiple"
2897 " buffers\n", netdev
->name
);
2898 dev_kfree_skb_irq(skb
);
2902 if(unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
2903 last_byte
= *(skb
->data
+ length
- 1);
2904 if(TBI_ACCEPT(&adapter
->hw
, rx_desc
->status
,
2905 rx_desc
->errors
, length
, last_byte
)) {
2906 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2907 e1000_tbi_adjust_stats(&adapter
->hw
,
2910 spin_unlock_irqrestore(&adapter
->stats_lock
,
2914 dev_kfree_skb_irq(skb
);
2920 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
2922 /* Receive Checksum Offload */
2923 e1000_rx_checksum(adapter
,
2924 (uint32_t)(rx_desc
->status
) |
2925 ((uint32_t)(rx_desc
->errors
) << 24),
2926 rx_desc
->csum
, skb
);
2927 skb
->protocol
= eth_type_trans(skb
, netdev
);
2928 #ifdef CONFIG_E1000_NAPI
2929 if(unlikely(adapter
->vlgrp
&&
2930 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
2931 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
2932 le16_to_cpu(rx_desc
->special
) &
2933 E1000_RXD_SPC_VLAN_MASK
);
2935 netif_receive_skb(skb
);
2937 #else /* CONFIG_E1000_NAPI */
2938 if(unlikely(adapter
->vlgrp
&&
2939 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
2940 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
2941 le16_to_cpu(rx_desc
->special
) &
2942 E1000_RXD_SPC_VLAN_MASK
);
2946 #endif /* CONFIG_E1000_NAPI */
2947 netdev
->last_rx
= jiffies
;
2950 rx_desc
->status
= 0;
2951 buffer_info
->skb
= NULL
;
2952 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
2954 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
2956 rx_ring
->next_to_clean
= i
;
2957 adapter
->alloc_rx_buf(adapter
);
2963 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
2964 * @adapter: board private structure
2968 #ifdef CONFIG_E1000_NAPI
2969 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
, int *work_done
,
2972 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
)
2975 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
2976 union e1000_rx_desc_packet_split
*rx_desc
;
2977 struct net_device
*netdev
= adapter
->netdev
;
2978 struct pci_dev
*pdev
= adapter
->pdev
;
2979 struct e1000_buffer
*buffer_info
;
2980 struct e1000_ps_page
*ps_page
;
2981 struct e1000_ps_page_dma
*ps_page_dma
;
2982 struct sk_buff
*skb
;
2984 uint32_t length
, staterr
;
2985 boolean_t cleaned
= FALSE
;
2987 i
= rx_ring
->next_to_clean
;
2988 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
2989 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
2991 while(staterr
& E1000_RXD_STAT_DD
) {
2992 buffer_info
= &rx_ring
->buffer_info
[i
];
2993 ps_page
= &rx_ring
->ps_page
[i
];
2994 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2995 #ifdef CONFIG_E1000_NAPI
2996 if(unlikely(*work_done
>= work_to_do
))
3001 pci_unmap_single(pdev
, buffer_info
->dma
,
3002 buffer_info
->length
,
3003 PCI_DMA_FROMDEVICE
);
3005 skb
= buffer_info
->skb
;
3007 if(unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3008 E1000_DBG("%s: Packet Split buffers didn't pick up"
3009 " the full packet\n", netdev
->name
);
3010 dev_kfree_skb_irq(skb
);
3014 if(unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3015 dev_kfree_skb_irq(skb
);
3019 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3021 if(unlikely(!length
)) {
3022 E1000_DBG("%s: Last part of the packet spanning"
3023 " multiple descriptors\n", netdev
->name
);
3024 dev_kfree_skb_irq(skb
);
3029 skb_put(skb
, length
);
3031 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3032 if(!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3035 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3036 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3037 ps_page_dma
->ps_page_dma
[j
] = 0;
3038 skb_shinfo(skb
)->frags
[j
].page
=
3039 ps_page
->ps_page
[j
];
3040 ps_page
->ps_page
[j
] = NULL
;
3041 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3042 skb_shinfo(skb
)->frags
[j
].size
= length
;
3043 skb_shinfo(skb
)->nr_frags
++;
3045 skb
->data_len
+= length
;
3048 e1000_rx_checksum(adapter
, staterr
,
3049 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3050 skb
->protocol
= eth_type_trans(skb
, netdev
);
3052 #ifdef HAVE_RX_ZERO_COPY
3053 if(likely(rx_desc
->wb
.upper
.header_status
&
3054 E1000_RXDPS_HDRSTAT_HDRSP
))
3055 skb_shinfo(skb
)->zero_copy
= TRUE
;
3057 #ifdef CONFIG_E1000_NAPI
3058 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3059 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3060 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3061 E1000_RXD_SPC_VLAN_MASK
);
3063 netif_receive_skb(skb
);
3065 #else /* CONFIG_E1000_NAPI */
3066 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3067 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3068 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3069 E1000_RXD_SPC_VLAN_MASK
);
3073 #endif /* CONFIG_E1000_NAPI */
3074 netdev
->last_rx
= jiffies
;
3077 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3078 buffer_info
->skb
= NULL
;
3079 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3081 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3082 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3084 rx_ring
->next_to_clean
= i
;
3085 adapter
->alloc_rx_buf(adapter
);
3091 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3092 * @adapter: address of board private structure
3096 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
)
3098 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
3099 struct net_device
*netdev
= adapter
->netdev
;
3100 struct pci_dev
*pdev
= adapter
->pdev
;
3101 struct e1000_rx_desc
*rx_desc
;
3102 struct e1000_buffer
*buffer_info
;
3103 struct sk_buff
*skb
;
3105 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3107 i
= rx_ring
->next_to_use
;
3108 buffer_info
= &rx_ring
->buffer_info
[i
];
3110 while(!buffer_info
->skb
) {
3111 skb
= dev_alloc_skb(bufsz
);
3113 if(unlikely(!skb
)) {
3114 /* Better luck next round */
3118 /* Fix for errata 23, can't cross 64kB boundary */
3119 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3120 struct sk_buff
*oldskb
= skb
;
3121 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3122 "at %p\n", bufsz
, skb
->data
);
3123 /* Try again, without freeing the previous */
3124 skb
= dev_alloc_skb(bufsz
);
3125 /* Failed allocation, critical failure */
3127 dev_kfree_skb(oldskb
);
3131 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3134 dev_kfree_skb(oldskb
);
3135 break; /* while !buffer_info->skb */
3137 /* Use new allocation */
3138 dev_kfree_skb(oldskb
);
3141 /* Make buffer alignment 2 beyond a 16 byte boundary
3142 * this will result in a 16 byte aligned IP header after
3143 * the 14 byte MAC header is removed
3145 skb_reserve(skb
, NET_IP_ALIGN
);
3149 buffer_info
->skb
= skb
;
3150 buffer_info
->length
= adapter
->rx_buffer_len
;
3151 buffer_info
->dma
= pci_map_single(pdev
,
3153 adapter
->rx_buffer_len
,
3154 PCI_DMA_FROMDEVICE
);
3156 /* Fix for errata 23, can't cross 64kB boundary */
3157 if (!e1000_check_64k_bound(adapter
,
3158 (void *)(unsigned long)buffer_info
->dma
,
3159 adapter
->rx_buffer_len
)) {
3160 DPRINTK(RX_ERR
, ERR
,
3161 "dma align check failed: %u bytes at %p\n",
3162 adapter
->rx_buffer_len
,
3163 (void *)(unsigned long)buffer_info
->dma
);
3165 buffer_info
->skb
= NULL
;
3167 pci_unmap_single(pdev
, buffer_info
->dma
,
3168 adapter
->rx_buffer_len
,
3169 PCI_DMA_FROMDEVICE
);
3171 break; /* while !buffer_info->skb */
3173 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3174 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3176 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3177 /* Force memory writes to complete before letting h/w
3178 * know there are new descriptors to fetch. (Only
3179 * applicable for weak-ordered memory model archs,
3180 * such as IA-64). */
3182 E1000_WRITE_REG(&adapter
->hw
, RDT
, i
);
3185 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3186 buffer_info
= &rx_ring
->buffer_info
[i
];
3189 rx_ring
->next_to_use
= i
;
3193 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3194 * @adapter: address of board private structure
3198 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
)
3200 struct e1000_desc_ring
*rx_ring
= &adapter
->rx_ring
;
3201 struct net_device
*netdev
= adapter
->netdev
;
3202 struct pci_dev
*pdev
= adapter
->pdev
;
3203 union e1000_rx_desc_packet_split
*rx_desc
;
3204 struct e1000_buffer
*buffer_info
;
3205 struct e1000_ps_page
*ps_page
;
3206 struct e1000_ps_page_dma
*ps_page_dma
;
3207 struct sk_buff
*skb
;
3210 i
= rx_ring
->next_to_use
;
3211 buffer_info
= &rx_ring
->buffer_info
[i
];
3212 ps_page
= &rx_ring
->ps_page
[i
];
3213 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3215 while(!buffer_info
->skb
) {
3216 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3218 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3219 if(unlikely(!ps_page
->ps_page
[j
])) {
3220 ps_page
->ps_page
[j
] =
3221 alloc_page(GFP_ATOMIC
);
3222 if(unlikely(!ps_page
->ps_page
[j
]))
3224 ps_page_dma
->ps_page_dma
[j
] =
3226 ps_page
->ps_page
[j
],
3228 PCI_DMA_FROMDEVICE
);
3230 /* Refresh the desc even if buffer_addrs didn't
3231 * change because each write-back erases this info.
3233 rx_desc
->read
.buffer_addr
[j
+1] =
3234 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3237 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3242 /* Make buffer alignment 2 beyond a 16 byte boundary
3243 * this will result in a 16 byte aligned IP header after
3244 * the 14 byte MAC header is removed
3246 skb_reserve(skb
, NET_IP_ALIGN
);
3250 buffer_info
->skb
= skb
;
3251 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3252 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3253 adapter
->rx_ps_bsize0
,
3254 PCI_DMA_FROMDEVICE
);
3256 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3258 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3259 /* Force memory writes to complete before letting h/w
3260 * know there are new descriptors to fetch. (Only
3261 * applicable for weak-ordered memory model archs,
3262 * such as IA-64). */
3264 /* Hardware increments by 16 bytes, but packet split
3265 * descriptors are 32 bytes...so we increment tail
3268 E1000_WRITE_REG(&adapter
->hw
, RDT
, i
<<1);
3271 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3272 buffer_info
= &rx_ring
->buffer_info
[i
];
3273 ps_page
= &rx_ring
->ps_page
[i
];
3274 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3278 rx_ring
->next_to_use
= i
;
3282 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3287 e1000_smartspeed(struct e1000_adapter
*adapter
)
3289 uint16_t phy_status
;
3292 if((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3293 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3296 if(adapter
->smartspeed
== 0) {
3297 /* If Master/Slave config fault is asserted twice,
3298 * we assume back-to-back */
3299 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3300 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3301 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3302 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3303 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3304 if(phy_ctrl
& CR_1000T_MS_ENABLE
) {
3305 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3306 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3308 adapter
->smartspeed
++;
3309 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3310 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3312 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3313 MII_CR_RESTART_AUTO_NEG
);
3314 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3319 } else if(adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3320 /* If still no link, perhaps using 2/3 pair cable */
3321 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3322 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3323 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3324 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3325 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3326 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3327 MII_CR_RESTART_AUTO_NEG
);
3328 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3331 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3332 if(adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3333 adapter
->smartspeed
= 0;
3344 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3350 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3364 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3366 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3367 struct mii_ioctl_data
*data
= if_mii(ifr
);
3371 unsigned long flags
;
3373 if(adapter
->hw
.media_type
!= e1000_media_type_copper
)
3378 data
->phy_id
= adapter
->hw
.phy_addr
;
3381 if(!capable(CAP_NET_ADMIN
))
3383 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3384 if(e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
3386 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3389 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3392 if(!capable(CAP_NET_ADMIN
))
3394 if(data
->reg_num
& ~(0x1F))
3396 mii_reg
= data
->val_in
;
3397 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3398 if(e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
3400 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3403 if(adapter
->hw
.phy_type
== e1000_phy_m88
) {
3404 switch (data
->reg_num
) {
3406 if(mii_reg
& MII_CR_POWER_DOWN
)
3408 if(mii_reg
& MII_CR_AUTO_NEG_EN
) {
3409 adapter
->hw
.autoneg
= 1;
3410 adapter
->hw
.autoneg_advertised
= 0x2F;
3413 spddplx
= SPEED_1000
;
3414 else if (mii_reg
& 0x2000)
3415 spddplx
= SPEED_100
;
3418 spddplx
+= (mii_reg
& 0x100)
3421 retval
= e1000_set_spd_dplx(adapter
,
3424 spin_unlock_irqrestore(
3425 &adapter
->stats_lock
,
3430 if(netif_running(adapter
->netdev
)) {
3431 e1000_down(adapter
);
3434 e1000_reset(adapter
);
3436 case M88E1000_PHY_SPEC_CTRL
:
3437 case M88E1000_EXT_PHY_SPEC_CTRL
:
3438 if(e1000_phy_reset(&adapter
->hw
)) {
3439 spin_unlock_irqrestore(
3440 &adapter
->stats_lock
, flags
);
3446 switch (data
->reg_num
) {
3448 if(mii_reg
& MII_CR_POWER_DOWN
)
3450 if(netif_running(adapter
->netdev
)) {
3451 e1000_down(adapter
);
3454 e1000_reset(adapter
);
3458 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3463 return E1000_SUCCESS
;
3467 e1000_pci_set_mwi(struct e1000_hw
*hw
)
3469 struct e1000_adapter
*adapter
= hw
->back
;
3470 int ret_val
= pci_set_mwi(adapter
->pdev
);
3473 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
3477 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
3479 struct e1000_adapter
*adapter
= hw
->back
;
3481 pci_clear_mwi(adapter
->pdev
);
3485 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
3487 struct e1000_adapter
*adapter
= hw
->back
;
3489 pci_read_config_word(adapter
->pdev
, reg
, value
);
3493 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
3495 struct e1000_adapter
*adapter
= hw
->back
;
3497 pci_write_config_word(adapter
->pdev
, reg
, *value
);
3501 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
3507 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
3513 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
3515 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3516 uint32_t ctrl
, rctl
;
3518 e1000_irq_disable(adapter
);
3519 adapter
->vlgrp
= grp
;
3522 /* enable VLAN tag insert/strip */
3523 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
3524 ctrl
|= E1000_CTRL_VME
;
3525 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
3527 /* enable VLAN receive filtering */
3528 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
3529 rctl
|= E1000_RCTL_VFE
;
3530 rctl
&= ~E1000_RCTL_CFIEN
;
3531 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
3532 e1000_update_mng_vlan(adapter
);
3534 /* disable VLAN tag insert/strip */
3535 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
3536 ctrl
&= ~E1000_CTRL_VME
;
3537 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
3539 /* disable VLAN filtering */
3540 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
3541 rctl
&= ~E1000_RCTL_VFE
;
3542 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
3543 if(adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
3544 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
3545 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
3549 e1000_irq_enable(adapter
);
3553 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
3555 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3556 uint32_t vfta
, index
;
3557 if((adapter
->hw
.mng_cookie
.status
&
3558 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
3559 (vid
== adapter
->mng_vlan_id
))
3561 /* add VID to filter table */
3562 index
= (vid
>> 5) & 0x7F;
3563 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
3564 vfta
|= (1 << (vid
& 0x1F));
3565 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
3569 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
3571 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3572 uint32_t vfta
, index
;
3574 e1000_irq_disable(adapter
);
3577 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
3579 e1000_irq_enable(adapter
);
3581 if((adapter
->hw
.mng_cookie
.status
&
3582 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
3583 (vid
== adapter
->mng_vlan_id
))
3585 /* remove VID from filter table */
3586 index
= (vid
>> 5) & 0x7F;
3587 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
3588 vfta
&= ~(1 << (vid
& 0x1F));
3589 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
3593 e1000_restore_vlan(struct e1000_adapter
*adapter
)
3595 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
3597 if(adapter
->vlgrp
) {
3599 for(vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
3600 if(!adapter
->vlgrp
->vlan_devices
[vid
])
3602 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
3608 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
3610 adapter
->hw
.autoneg
= 0;
3612 /* Fiber NICs only allow 1000 gbps Full duplex */
3613 if((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
3614 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
3615 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
3620 case SPEED_10
+ DUPLEX_HALF
:
3621 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
3623 case SPEED_10
+ DUPLEX_FULL
:
3624 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
3626 case SPEED_100
+ DUPLEX_HALF
:
3627 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
3629 case SPEED_100
+ DUPLEX_FULL
:
3630 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
3632 case SPEED_1000
+ DUPLEX_FULL
:
3633 adapter
->hw
.autoneg
= 1;
3634 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
3636 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
3638 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
3645 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
3647 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3648 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3649 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
, swsm
;
3650 uint32_t wufc
= adapter
->wol
;
3652 netif_device_detach(netdev
);
3654 if(netif_running(netdev
))
3655 e1000_down(adapter
);
3657 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
3658 if(status
& E1000_STATUS_LU
)
3659 wufc
&= ~E1000_WUFC_LNKC
;
3662 e1000_setup_rctl(adapter
);
3663 e1000_set_multi(netdev
);
3665 /* turn on all-multi mode if wake on multicast is enabled */
3666 if(adapter
->wol
& E1000_WUFC_MC
) {
3667 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
3668 rctl
|= E1000_RCTL_MPE
;
3669 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
3672 if(adapter
->hw
.mac_type
>= e1000_82540
) {
3673 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
3674 /* advertise wake from D3Cold */
3675 #define E1000_CTRL_ADVD3WUC 0x00100000
3676 /* phy power management enable */
3677 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
3678 ctrl
|= E1000_CTRL_ADVD3WUC
|
3679 E1000_CTRL_EN_PHY_PWR_MGMT
;
3680 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
3683 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
3684 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
3685 /* keep the laser running in D3 */
3686 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
3687 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
3688 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
3691 /* Allow time for pending master requests to run */
3692 e1000_disable_pciex_master(&adapter
->hw
);
3694 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
3695 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
3696 pci_enable_wake(pdev
, 3, 1);
3697 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
3699 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
3700 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
3701 pci_enable_wake(pdev
, 3, 0);
3702 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
3705 pci_save_state(pdev
);
3707 if(adapter
->hw
.mac_type
>= e1000_82540
&&
3708 adapter
->hw
.media_type
== e1000_media_type_copper
) {
3709 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
3710 if(manc
& E1000_MANC_SMBUS_EN
) {
3711 manc
|= E1000_MANC_ARP_EN
;
3712 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
3713 pci_enable_wake(pdev
, 3, 1);
3714 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
3718 switch(adapter
->hw
.mac_type
) {
3720 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
3721 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
3722 swsm
& ~E1000_SWSM_DRV_LOAD
);
3728 pci_disable_device(pdev
);
3729 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
3736 e1000_resume(struct pci_dev
*pdev
)
3738 struct net_device
*netdev
= pci_get_drvdata(pdev
);
3739 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3740 uint32_t manc
, ret_val
, swsm
;
3742 pci_set_power_state(pdev
, PCI_D0
);
3743 pci_restore_state(pdev
);
3744 ret_val
= pci_enable_device(pdev
);
3745 pci_set_master(pdev
);
3747 pci_enable_wake(pdev
, PCI_D3hot
, 0);
3748 pci_enable_wake(pdev
, PCI_D3cold
, 0);
3750 e1000_reset(adapter
);
3751 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
3753 if(netif_running(netdev
))
3756 netif_device_attach(netdev
);
3758 if(adapter
->hw
.mac_type
>= e1000_82540
&&
3759 adapter
->hw
.media_type
== e1000_media_type_copper
) {
3760 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
3761 manc
&= ~(E1000_MANC_ARP_EN
);
3762 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
3765 switch(adapter
->hw
.mac_type
) {
3767 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
3768 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
3769 swsm
| E1000_SWSM_DRV_LOAD
);
3778 #ifdef CONFIG_NET_POLL_CONTROLLER
3780 * Polling 'interrupt' - used by things like netconsole to send skbs
3781 * without having to re-enable interrupts. It's not called while
3782 * the interrupt routine is executing.
3785 e1000_netpoll(struct net_device
*netdev
)
3787 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3788 disable_irq(adapter
->pdev
->irq
);
3789 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
3790 e1000_clean_tx_irq(adapter
);
3791 enable_irq(adapter
->pdev
->irq
);