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 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
41 #ifndef CONFIG_E1000_NAPI
44 #define DRIVERNAPI "-NAPI"
46 #define DRV_VERSION "6.3.9-k2"DRIVERNAPI
47 char e1000_driver_version
[] = DRV_VERSION
;
48 static 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(0x105E),
84 INTEL_E1000_ETHERNET_DEVICE(0x105F),
85 INTEL_E1000_ETHERNET_DEVICE(0x1060),
86 INTEL_E1000_ETHERNET_DEVICE(0x1075),
87 INTEL_E1000_ETHERNET_DEVICE(0x1076),
88 INTEL_E1000_ETHERNET_DEVICE(0x1077),
89 INTEL_E1000_ETHERNET_DEVICE(0x1078),
90 INTEL_E1000_ETHERNET_DEVICE(0x1079),
91 INTEL_E1000_ETHERNET_DEVICE(0x107A),
92 INTEL_E1000_ETHERNET_DEVICE(0x107B),
93 INTEL_E1000_ETHERNET_DEVICE(0x107C),
94 INTEL_E1000_ETHERNET_DEVICE(0x107D),
95 INTEL_E1000_ETHERNET_DEVICE(0x107E),
96 INTEL_E1000_ETHERNET_DEVICE(0x107F),
97 INTEL_E1000_ETHERNET_DEVICE(0x108A),
98 INTEL_E1000_ETHERNET_DEVICE(0x108B),
99 INTEL_E1000_ETHERNET_DEVICE(0x108C),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 /* required last entry */
105 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
107 int e1000_up(struct e1000_adapter
*adapter
);
108 void e1000_down(struct e1000_adapter
*adapter
);
109 void e1000_reset(struct e1000_adapter
*adapter
);
110 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
111 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
112 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
113 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
114 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
115 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
116 struct e1000_tx_ring
*txdr
);
117 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
118 struct e1000_rx_ring
*rxdr
);
119 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
120 struct e1000_tx_ring
*tx_ring
);
121 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
122 struct e1000_rx_ring
*rx_ring
);
123 void e1000_update_stats(struct e1000_adapter
*adapter
);
125 /* Local Function Prototypes */
127 static int e1000_init_module(void);
128 static void e1000_exit_module(void);
129 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
130 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
131 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
132 #ifdef CONFIG_E1000_MQ
133 static void e1000_setup_queue_mapping(struct e1000_adapter
*adapter
);
135 static int e1000_sw_init(struct e1000_adapter
*adapter
);
136 static int e1000_open(struct net_device
*netdev
);
137 static int e1000_close(struct net_device
*netdev
);
138 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
139 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
140 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
141 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
142 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
143 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
144 struct e1000_tx_ring
*tx_ring
);
145 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
146 struct e1000_rx_ring
*rx_ring
);
147 static void e1000_set_multi(struct net_device
*netdev
);
148 static void e1000_update_phy_info(unsigned long data
);
149 static void e1000_watchdog(unsigned long data
);
150 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
151 static void e1000_82547_tx_fifo_stall(unsigned long data
);
152 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
153 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
154 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
155 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
156 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
157 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
158 struct e1000_tx_ring
*tx_ring
);
159 #ifdef CONFIG_E1000_NAPI
160 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
161 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
162 struct e1000_rx_ring
*rx_ring
,
163 int *work_done
, int work_to_do
);
164 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
165 struct e1000_rx_ring
*rx_ring
,
166 int *work_done
, int work_to_do
);
168 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
);
170 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
171 struct e1000_rx_ring
*rx_ring
);
173 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
174 struct e1000_rx_ring
*rx_ring
);
175 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
176 struct e1000_rx_ring
*rx_ring
);
177 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
178 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
180 void e1000_set_ethtool_ops(struct net_device
*netdev
);
181 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
182 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
183 static void e1000_tx_timeout(struct net_device
*dev
);
184 static void e1000_tx_timeout_task(struct net_device
*dev
);
185 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
186 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
187 struct sk_buff
*skb
);
189 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
190 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
191 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
192 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
195 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
196 static int e1000_resume(struct pci_dev
*pdev
);
199 #ifdef CONFIG_NET_POLL_CONTROLLER
200 /* for netdump / net console */
201 static void e1000_netpoll (struct net_device
*netdev
);
204 #ifdef CONFIG_E1000_MQ
205 /* for multiple Rx queues */
206 void e1000_rx_schedule(void *data
);
209 /* Exported from other modules */
211 extern void e1000_check_options(struct e1000_adapter
*adapter
);
213 static struct pci_driver e1000_driver
= {
214 .name
= e1000_driver_name
,
215 .id_table
= e1000_pci_tbl
,
216 .probe
= e1000_probe
,
217 .remove
= __devexit_p(e1000_remove
),
218 /* Power Managment Hooks */
220 .suspend
= e1000_suspend
,
221 .resume
= e1000_resume
225 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
226 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(DRV_VERSION
);
230 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
231 module_param(debug
, int, 0);
232 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
235 * e1000_init_module - Driver Registration Routine
237 * e1000_init_module is the first routine called when the driver is
238 * loaded. All it does is register with the PCI subsystem.
242 e1000_init_module(void)
245 printk(KERN_INFO
"%s - version %s\n",
246 e1000_driver_string
, e1000_driver_version
);
248 printk(KERN_INFO
"%s\n", e1000_copyright
);
250 ret
= pci_module_init(&e1000_driver
);
255 module_init(e1000_init_module
);
258 * e1000_exit_module - Driver Exit Cleanup Routine
260 * e1000_exit_module is called just before the driver is removed
265 e1000_exit_module(void)
267 pci_unregister_driver(&e1000_driver
);
270 module_exit(e1000_exit_module
);
273 * e1000_irq_disable - Mask off interrupt generation on the NIC
274 * @adapter: board private structure
278 e1000_irq_disable(struct e1000_adapter
*adapter
)
280 atomic_inc(&adapter
->irq_sem
);
281 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
282 E1000_WRITE_FLUSH(&adapter
->hw
);
283 synchronize_irq(adapter
->pdev
->irq
);
287 * e1000_irq_enable - Enable default interrupt generation settings
288 * @adapter: board private structure
292 e1000_irq_enable(struct e1000_adapter
*adapter
)
294 if(likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
295 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
296 E1000_WRITE_FLUSH(&adapter
->hw
);
301 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
303 struct net_device
*netdev
= adapter
->netdev
;
304 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
305 uint16_t old_vid
= adapter
->mng_vlan_id
;
307 if(!adapter
->vlgrp
->vlan_devices
[vid
]) {
308 if(adapter
->hw
.mng_cookie
.status
&
309 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
310 e1000_vlan_rx_add_vid(netdev
, vid
);
311 adapter
->mng_vlan_id
= vid
;
313 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
315 if((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
317 !adapter
->vlgrp
->vlan_devices
[old_vid
])
318 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
324 * e1000_release_hw_control - release control of the h/w to f/w
325 * @adapter: address of board private structure
327 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
328 * For ASF and Pass Through versions of f/w this means that the
329 * driver is no longer loaded. For AMT version (only with 82573) i
330 * of the f/w this means that the netowrk i/f is closed.
335 e1000_release_hw_control(struct e1000_adapter
*adapter
)
340 /* Let firmware taken over control of h/w */
341 switch (adapter
->hw
.mac_type
) {
344 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
345 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
346 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
349 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
350 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
351 swsm
& ~E1000_SWSM_DRV_LOAD
);
358 * e1000_get_hw_control - get control of the h/w from f/w
359 * @adapter: address of board private structure
361 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
362 * For ASF and Pass Through versions of f/w this means that
363 * the driver is loaded. For AMT version (only with 82573)
364 * of the f/w this means that the netowrk i/f is open.
369 e1000_get_hw_control(struct e1000_adapter
*adapter
)
373 /* Let firmware know the driver has taken over */
374 switch (adapter
->hw
.mac_type
) {
377 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
378 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
379 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
382 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
383 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
384 swsm
| E1000_SWSM_DRV_LOAD
);
392 e1000_up(struct e1000_adapter
*adapter
)
394 struct net_device
*netdev
= adapter
->netdev
;
397 /* hardware has been reset, we need to reload some things */
399 /* Reset the PHY if it was previously powered down */
400 if(adapter
->hw
.media_type
== e1000_media_type_copper
) {
402 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
403 if(mii_reg
& MII_CR_POWER_DOWN
)
404 e1000_phy_reset(&adapter
->hw
);
407 e1000_set_multi(netdev
);
409 e1000_restore_vlan(adapter
);
411 e1000_configure_tx(adapter
);
412 e1000_setup_rctl(adapter
);
413 e1000_configure_rx(adapter
);
414 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
415 adapter
->alloc_rx_buf(adapter
, &adapter
->rx_ring
[i
]);
418 #ifdef CONFIG_PCI_MSI
419 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
420 adapter
->have_msi
= TRUE
;
421 if((err
= pci_enable_msi(adapter
->pdev
))) {
423 "Unable to allocate MSI interrupt Error: %d\n", err
);
424 adapter
->have_msi
= FALSE
;
428 if((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
429 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
430 netdev
->name
, netdev
))) {
432 "Unable to allocate interrupt Error: %d\n", err
);
436 #ifdef CONFIG_E1000_MQ
437 e1000_setup_queue_mapping(adapter
);
440 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
442 mod_timer(&adapter
->watchdog_timer
, jiffies
);
444 #ifdef CONFIG_E1000_NAPI
445 netif_poll_enable(netdev
);
447 e1000_irq_enable(adapter
);
453 e1000_down(struct e1000_adapter
*adapter
)
455 struct net_device
*netdev
= adapter
->netdev
;
456 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
457 e1000_check_mng_mode(&adapter
->hw
);
459 e1000_irq_disable(adapter
);
460 #ifdef CONFIG_E1000_MQ
461 while (atomic_read(&adapter
->rx_sched_call_data
.count
) != 0);
463 free_irq(adapter
->pdev
->irq
, netdev
);
464 #ifdef CONFIG_PCI_MSI
465 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
466 adapter
->have_msi
== TRUE
)
467 pci_disable_msi(adapter
->pdev
);
469 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
470 del_timer_sync(&adapter
->watchdog_timer
);
471 del_timer_sync(&adapter
->phy_info_timer
);
473 #ifdef CONFIG_E1000_NAPI
474 netif_poll_disable(netdev
);
476 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
477 adapter
->link_speed
= 0;
478 adapter
->link_duplex
= 0;
479 netif_carrier_off(netdev
);
480 netif_stop_queue(netdev
);
482 e1000_reset(adapter
);
483 e1000_clean_all_tx_rings(adapter
);
484 e1000_clean_all_rx_rings(adapter
);
486 /* Power down the PHY so no link is implied when interface is down *
487 * The PHY cannot be powered down if any of the following is TRUE *
490 * (c) SoL/IDER session is active */
491 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
492 adapter
->hw
.media_type
== e1000_media_type_copper
&&
493 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
495 !e1000_check_phy_reset_block(&adapter
->hw
)) {
497 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
498 mii_reg
|= MII_CR_POWER_DOWN
;
499 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
505 e1000_reset(struct e1000_adapter
*adapter
)
508 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
510 /* Repartition Pba for greater than 9k mtu
511 * To take effect CTRL.RST is required.
514 switch (adapter
->hw
.mac_type
) {
516 case e1000_82547_rev_2
:
531 if((adapter
->hw
.mac_type
!= e1000_82573
) &&
532 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
533 pba
-= 8; /* allocate more FIFO for Tx */
536 if(adapter
->hw
.mac_type
== e1000_82547
) {
537 adapter
->tx_fifo_head
= 0;
538 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
539 adapter
->tx_fifo_size
=
540 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
541 atomic_set(&adapter
->tx_fifo_stall
, 0);
544 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
546 /* flow control settings */
547 /* Set the FC high water mark to 90% of the FIFO size.
548 * Required to clear last 3 LSB */
549 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
551 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
552 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
553 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
554 adapter
->hw
.fc_send_xon
= 1;
555 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
557 /* Allow time for pending master requests to run */
558 e1000_reset_hw(&adapter
->hw
);
559 if(adapter
->hw
.mac_type
>= e1000_82544
)
560 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
561 if(e1000_init_hw(&adapter
->hw
))
562 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
563 e1000_update_mng_vlan(adapter
);
564 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
565 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
567 e1000_reset_adaptive(&adapter
->hw
);
568 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
569 if (adapter
->en_mng_pt
) {
570 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
571 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
572 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
577 * e1000_probe - Device Initialization Routine
578 * @pdev: PCI device information struct
579 * @ent: entry in e1000_pci_tbl
581 * Returns 0 on success, negative on failure
583 * e1000_probe initializes an adapter identified by a pci_dev structure.
584 * The OS initialization, configuring of the adapter private structure,
585 * and a hardware reset occur.
589 e1000_probe(struct pci_dev
*pdev
,
590 const struct pci_device_id
*ent
)
592 struct net_device
*netdev
;
593 struct e1000_adapter
*adapter
;
594 unsigned long mmio_start
, mmio_len
;
596 static int cards_found
= 0;
597 int i
, err
, pci_using_dac
;
598 uint16_t eeprom_data
;
599 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
600 if((err
= pci_enable_device(pdev
)))
603 if(!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
606 if((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
607 E1000_ERR("No usable DMA configuration, aborting\n");
613 if((err
= pci_request_regions(pdev
, e1000_driver_name
)))
616 pci_set_master(pdev
);
618 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
621 goto err_alloc_etherdev
;
624 SET_MODULE_OWNER(netdev
);
625 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
627 pci_set_drvdata(pdev
, netdev
);
628 adapter
= netdev_priv(netdev
);
629 adapter
->netdev
= netdev
;
630 adapter
->pdev
= pdev
;
631 adapter
->hw
.back
= adapter
;
632 adapter
->msg_enable
= (1 << debug
) - 1;
634 mmio_start
= pci_resource_start(pdev
, BAR_0
);
635 mmio_len
= pci_resource_len(pdev
, BAR_0
);
637 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
638 if(!adapter
->hw
.hw_addr
) {
643 for(i
= BAR_1
; i
<= BAR_5
; i
++) {
644 if(pci_resource_len(pdev
, i
) == 0)
646 if(pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
647 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
652 netdev
->open
= &e1000_open
;
653 netdev
->stop
= &e1000_close
;
654 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
655 netdev
->get_stats
= &e1000_get_stats
;
656 netdev
->set_multicast_list
= &e1000_set_multi
;
657 netdev
->set_mac_address
= &e1000_set_mac
;
658 netdev
->change_mtu
= &e1000_change_mtu
;
659 netdev
->do_ioctl
= &e1000_ioctl
;
660 e1000_set_ethtool_ops(netdev
);
661 netdev
->tx_timeout
= &e1000_tx_timeout
;
662 netdev
->watchdog_timeo
= 5 * HZ
;
663 #ifdef CONFIG_E1000_NAPI
664 netdev
->poll
= &e1000_clean
;
667 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
668 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
669 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
670 #ifdef CONFIG_NET_POLL_CONTROLLER
671 netdev
->poll_controller
= e1000_netpoll
;
673 strcpy(netdev
->name
, pci_name(pdev
));
675 netdev
->mem_start
= mmio_start
;
676 netdev
->mem_end
= mmio_start
+ mmio_len
;
677 netdev
->base_addr
= adapter
->hw
.io_base
;
679 adapter
->bd_number
= cards_found
;
681 /* setup the private structure */
683 if((err
= e1000_sw_init(adapter
)))
686 if((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
687 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
689 if(adapter
->hw
.mac_type
>= e1000_82543
) {
690 netdev
->features
= NETIF_F_SG
|
694 NETIF_F_HW_VLAN_FILTER
;
698 if((adapter
->hw
.mac_type
>= e1000_82544
) &&
699 (adapter
->hw
.mac_type
!= e1000_82547
))
700 netdev
->features
|= NETIF_F_TSO
;
702 #ifdef NETIF_F_TSO_IPV6
703 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
)
704 netdev
->features
|= NETIF_F_TSO_IPV6
;
708 netdev
->features
|= NETIF_F_HIGHDMA
;
710 /* hard_start_xmit is safe against parallel locking */
711 netdev
->features
|= NETIF_F_LLTX
;
713 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
715 /* before reading the EEPROM, reset the controller to
716 * put the device in a known good starting state */
718 e1000_reset_hw(&adapter
->hw
);
720 /* make sure the EEPROM is good */
722 if(e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
723 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
728 /* copy the MAC address out of the EEPROM */
730 if(e1000_read_mac_addr(&adapter
->hw
))
731 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
732 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
733 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
735 if(!is_valid_ether_addr(netdev
->perm_addr
)) {
736 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
741 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
743 e1000_get_bus_info(&adapter
->hw
);
745 init_timer(&adapter
->tx_fifo_stall_timer
);
746 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
747 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
749 init_timer(&adapter
->watchdog_timer
);
750 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
751 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
753 INIT_WORK(&adapter
->watchdog_task
,
754 (void (*)(void *))e1000_watchdog_task
, adapter
);
756 init_timer(&adapter
->phy_info_timer
);
757 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
758 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
760 INIT_WORK(&adapter
->tx_timeout_task
,
761 (void (*)(void *))e1000_tx_timeout_task
, netdev
);
763 /* we're going to reset, so assume we have no link for now */
765 netif_carrier_off(netdev
);
766 netif_stop_queue(netdev
);
768 e1000_check_options(adapter
);
770 /* Initial Wake on LAN setting
771 * If APM wake is enabled in the EEPROM,
772 * enable the ACPI Magic Packet filter
775 switch(adapter
->hw
.mac_type
) {
776 case e1000_82542_rev2_0
:
777 case e1000_82542_rev2_1
:
781 e1000_read_eeprom(&adapter
->hw
,
782 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
783 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
786 case e1000_82546_rev_3
:
788 if((E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
789 && (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
790 e1000_read_eeprom(&adapter
->hw
,
791 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
796 e1000_read_eeprom(&adapter
->hw
,
797 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
800 if(eeprom_data
& eeprom_apme_mask
)
801 adapter
->wol
|= E1000_WUFC_MAG
;
803 /* reset the hardware with the new settings */
804 e1000_reset(adapter
);
806 /* If the controller is 82573 and f/w is AMT, do not set
807 * DRV_LOAD until the interface is up. For all other cases,
808 * let the f/w know that the h/w is now under the control
810 if (adapter
->hw
.mac_type
!= e1000_82573
||
811 !e1000_check_mng_mode(&adapter
->hw
))
812 e1000_get_hw_control(adapter
);
814 strcpy(netdev
->name
, "eth%d");
815 if((err
= register_netdev(netdev
)))
818 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
826 iounmap(adapter
->hw
.hw_addr
);
830 pci_release_regions(pdev
);
835 * e1000_remove - Device Removal Routine
836 * @pdev: PCI device information struct
838 * e1000_remove is called by the PCI subsystem to alert the driver
839 * that it should release a PCI device. The could be caused by a
840 * Hot-Plug event, or because the driver is going to be removed from
844 static void __devexit
845 e1000_remove(struct pci_dev
*pdev
)
847 struct net_device
*netdev
= pci_get_drvdata(pdev
);
848 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
850 #ifdef CONFIG_E1000_NAPI
854 flush_scheduled_work();
856 if(adapter
->hw
.mac_type
>= e1000_82540
&&
857 adapter
->hw
.media_type
== e1000_media_type_copper
) {
858 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
859 if(manc
& E1000_MANC_SMBUS_EN
) {
860 manc
|= E1000_MANC_ARP_EN
;
861 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
865 /* Release control of h/w to f/w. If f/w is AMT enabled, this
866 * would have already happened in close and is redundant. */
867 e1000_release_hw_control(adapter
);
869 unregister_netdev(netdev
);
870 #ifdef CONFIG_E1000_NAPI
871 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
872 __dev_put(&adapter
->polling_netdev
[i
]);
875 if(!e1000_check_phy_reset_block(&adapter
->hw
))
876 e1000_phy_hw_reset(&adapter
->hw
);
878 kfree(adapter
->tx_ring
);
879 kfree(adapter
->rx_ring
);
880 #ifdef CONFIG_E1000_NAPI
881 kfree(adapter
->polling_netdev
);
884 iounmap(adapter
->hw
.hw_addr
);
885 pci_release_regions(pdev
);
887 #ifdef CONFIG_E1000_MQ
888 free_percpu(adapter
->cpu_netdev
);
889 free_percpu(adapter
->cpu_tx_ring
);
893 pci_disable_device(pdev
);
897 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
898 * @adapter: board private structure to initialize
900 * e1000_sw_init initializes the Adapter private data structure.
901 * Fields are initialized based on PCI device information and
902 * OS network device settings (MTU size).
906 e1000_sw_init(struct e1000_adapter
*adapter
)
908 struct e1000_hw
*hw
= &adapter
->hw
;
909 struct net_device
*netdev
= adapter
->netdev
;
910 struct pci_dev
*pdev
= adapter
->pdev
;
911 #ifdef CONFIG_E1000_NAPI
915 /* PCI config space info */
917 hw
->vendor_id
= pdev
->vendor
;
918 hw
->device_id
= pdev
->device
;
919 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
920 hw
->subsystem_id
= pdev
->subsystem_device
;
922 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
924 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
926 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
927 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
928 hw
->max_frame_size
= netdev
->mtu
+
929 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
930 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
932 /* identify the MAC */
934 if(e1000_set_mac_type(hw
)) {
935 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
939 /* initialize eeprom parameters */
941 if(e1000_init_eeprom_params(hw
)) {
942 E1000_ERR("EEPROM initialization failed\n");
946 switch(hw
->mac_type
) {
951 case e1000_82541_rev_2
:
952 case e1000_82547_rev_2
:
953 hw
->phy_init_script
= 1;
957 e1000_set_media_type(hw
);
959 hw
->wait_autoneg_complete
= FALSE
;
960 hw
->tbi_compatibility_en
= TRUE
;
961 hw
->adaptive_ifs
= TRUE
;
965 if(hw
->media_type
== e1000_media_type_copper
) {
966 hw
->mdix
= AUTO_ALL_MODES
;
967 hw
->disable_polarity_correction
= FALSE
;
968 hw
->master_slave
= E1000_MASTER_SLAVE
;
971 #ifdef CONFIG_E1000_MQ
972 /* Number of supported queues */
973 switch (hw
->mac_type
) {
976 /* These controllers support 2 tx queues, but with a single
977 * qdisc implementation, multiple tx queues aren't quite as
978 * interesting. If we can find a logical way of mapping
979 * flows to a queue, then perhaps we can up the num_tx_queue
980 * count back to its default. Until then, we run the risk of
981 * terrible performance due to SACK overload. */
982 adapter
->num_tx_queues
= 1;
983 adapter
->num_rx_queues
= 2;
986 adapter
->num_tx_queues
= 1;
987 adapter
->num_rx_queues
= 1;
990 adapter
->num_rx_queues
= min(adapter
->num_rx_queues
, num_online_cpus());
991 adapter
->num_tx_queues
= min(adapter
->num_tx_queues
, num_online_cpus());
992 DPRINTK(DRV
, INFO
, "Multiqueue Enabled: Rx Queue count = %u %s\n",
993 adapter
->num_rx_queues
,
994 ((adapter
->num_rx_queues
== 1)
995 ? ((num_online_cpus() > 1)
996 ? "(due to unsupported feature in current adapter)"
997 : "(due to unsupported system configuration)")
999 DPRINTK(DRV
, INFO
, "Multiqueue Enabled: Tx Queue count = %u\n",
1000 adapter
->num_tx_queues
);
1002 adapter
->num_tx_queues
= 1;
1003 adapter
->num_rx_queues
= 1;
1006 if (e1000_alloc_queues(adapter
)) {
1007 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1011 #ifdef CONFIG_E1000_NAPI
1012 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1013 adapter
->polling_netdev
[i
].priv
= adapter
;
1014 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1015 adapter
->polling_netdev
[i
].weight
= 64;
1016 dev_hold(&adapter
->polling_netdev
[i
]);
1017 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1019 spin_lock_init(&adapter
->tx_queue_lock
);
1022 atomic_set(&adapter
->irq_sem
, 1);
1023 spin_lock_init(&adapter
->stats_lock
);
1029 * e1000_alloc_queues - Allocate memory for all rings
1030 * @adapter: board private structure to initialize
1032 * We allocate one ring per queue at run-time since we don't know the
1033 * number of queues at compile-time. The polling_netdev array is
1034 * intended for Multiqueue, but should work fine with a single queue.
1037 static int __devinit
1038 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1042 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1043 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1044 if (!adapter
->tx_ring
)
1046 memset(adapter
->tx_ring
, 0, size
);
1048 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1049 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1050 if (!adapter
->rx_ring
) {
1051 kfree(adapter
->tx_ring
);
1054 memset(adapter
->rx_ring
, 0, size
);
1056 #ifdef CONFIG_E1000_NAPI
1057 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1058 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1059 if (!adapter
->polling_netdev
) {
1060 kfree(adapter
->tx_ring
);
1061 kfree(adapter
->rx_ring
);
1064 memset(adapter
->polling_netdev
, 0, size
);
1067 #ifdef CONFIG_E1000_MQ
1068 adapter
->rx_sched_call_data
.func
= e1000_rx_schedule
;
1069 adapter
->rx_sched_call_data
.info
= adapter
->netdev
;
1071 adapter
->cpu_netdev
= alloc_percpu(struct net_device
*);
1072 adapter
->cpu_tx_ring
= alloc_percpu(struct e1000_tx_ring
*);
1075 return E1000_SUCCESS
;
1078 #ifdef CONFIG_E1000_MQ
1079 static void __devinit
1080 e1000_setup_queue_mapping(struct e1000_adapter
*adapter
)
1084 adapter
->rx_sched_call_data
.func
= e1000_rx_schedule
;
1085 adapter
->rx_sched_call_data
.info
= adapter
->netdev
;
1086 cpus_clear(adapter
->rx_sched_call_data
.cpumask
);
1088 adapter
->cpu_netdev
= alloc_percpu(struct net_device
*);
1089 adapter
->cpu_tx_ring
= alloc_percpu(struct e1000_tx_ring
*);
1093 for_each_online_cpu(cpu
) {
1094 *per_cpu_ptr(adapter
->cpu_tx_ring
, cpu
) = &adapter
->tx_ring
[i
% adapter
->num_tx_queues
];
1095 /* This is incomplete because we'd like to assign separate
1096 * physical cpus to these netdev polling structures and
1097 * avoid saturating a subset of cpus.
1099 if (i
< adapter
->num_rx_queues
) {
1100 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = &adapter
->polling_netdev
[i
];
1101 adapter
->rx_ring
[i
].cpu
= cpu
;
1102 cpu_set(cpu
, adapter
->cpumask
);
1104 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = NULL
;
1108 unlock_cpu_hotplug();
1113 * e1000_open - Called when a network interface is made active
1114 * @netdev: network interface device structure
1116 * Returns 0 on success, negative value on failure
1118 * The open entry point is called when a network interface is made
1119 * active by the system (IFF_UP). At this point all resources needed
1120 * for transmit and receive operations are allocated, the interrupt
1121 * handler is registered with the OS, the watchdog timer is started,
1122 * and the stack is notified that the interface is ready.
1126 e1000_open(struct net_device
*netdev
)
1128 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1131 /* allocate transmit descriptors */
1133 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1136 /* allocate receive descriptors */
1138 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1141 if((err
= e1000_up(adapter
)))
1143 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1144 if((adapter
->hw
.mng_cookie
.status
&
1145 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1146 e1000_update_mng_vlan(adapter
);
1149 /* If AMT is enabled, let the firmware know that the network
1150 * interface is now open */
1151 if (adapter
->hw
.mac_type
== e1000_82573
&&
1152 e1000_check_mng_mode(&adapter
->hw
))
1153 e1000_get_hw_control(adapter
);
1155 return E1000_SUCCESS
;
1158 e1000_free_all_rx_resources(adapter
);
1160 e1000_free_all_tx_resources(adapter
);
1162 e1000_reset(adapter
);
1168 * e1000_close - Disables a network interface
1169 * @netdev: network interface device structure
1171 * Returns 0, this is not allowed to fail
1173 * The close entry point is called when an interface is de-activated
1174 * by the OS. The hardware is still under the drivers control, but
1175 * needs to be disabled. A global MAC reset is issued to stop the
1176 * hardware, and all transmit and receive resources are freed.
1180 e1000_close(struct net_device
*netdev
)
1182 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1184 e1000_down(adapter
);
1186 e1000_free_all_tx_resources(adapter
);
1187 e1000_free_all_rx_resources(adapter
);
1189 if((adapter
->hw
.mng_cookie
.status
&
1190 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1191 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1194 /* If AMT is enabled, let the firmware know that the network
1195 * interface is now closed */
1196 if (adapter
->hw
.mac_type
== e1000_82573
&&
1197 e1000_check_mng_mode(&adapter
->hw
))
1198 e1000_release_hw_control(adapter
);
1204 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1205 * @adapter: address of board private structure
1206 * @start: address of beginning of memory
1207 * @len: length of memory
1209 static inline boolean_t
1210 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1211 void *start
, unsigned long len
)
1213 unsigned long begin
= (unsigned long) start
;
1214 unsigned long end
= begin
+ len
;
1216 /* First rev 82545 and 82546 need to not allow any memory
1217 * write location to cross 64k boundary due to errata 23 */
1218 if (adapter
->hw
.mac_type
== e1000_82545
||
1219 adapter
->hw
.mac_type
== e1000_82546
) {
1220 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1227 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1228 * @adapter: board private structure
1229 * @txdr: tx descriptor ring (for a specific queue) to setup
1231 * Return 0 on success, negative on failure
1235 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1236 struct e1000_tx_ring
*txdr
)
1238 struct pci_dev
*pdev
= adapter
->pdev
;
1241 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1243 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1244 if(!txdr
->buffer_info
) {
1246 "Unable to allocate memory for the transmit descriptor ring\n");
1249 memset(txdr
->buffer_info
, 0, size
);
1251 /* round up to nearest 4K */
1253 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1254 E1000_ROUNDUP(txdr
->size
, 4096);
1256 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1259 vfree(txdr
->buffer_info
);
1261 "Unable to allocate memory for the transmit descriptor ring\n");
1265 /* Fix for errata 23, can't cross 64kB boundary */
1266 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1267 void *olddesc
= txdr
->desc
;
1268 dma_addr_t olddma
= txdr
->dma
;
1269 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1270 "at %p\n", txdr
->size
, txdr
->desc
);
1271 /* Try again, without freeing the previous */
1272 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1274 /* Failed allocation, critical failure */
1275 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1276 goto setup_tx_desc_die
;
1279 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1281 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1283 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1285 "Unable to allocate aligned memory "
1286 "for the transmit descriptor ring\n");
1287 vfree(txdr
->buffer_info
);
1290 /* Free old allocation, new allocation was successful */
1291 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1294 memset(txdr
->desc
, 0, txdr
->size
);
1296 txdr
->next_to_use
= 0;
1297 txdr
->next_to_clean
= 0;
1298 spin_lock_init(&txdr
->tx_lock
);
1304 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1305 * (Descriptors) for all queues
1306 * @adapter: board private structure
1308 * If this function returns with an error, then it's possible one or
1309 * more of the rings is populated (while the rest are not). It is the
1310 * callers duty to clean those orphaned rings.
1312 * Return 0 on success, negative on failure
1316 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1320 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1321 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1324 "Allocation for Tx Queue %u failed\n", i
);
1333 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1334 * @adapter: board private structure
1336 * Configure the Tx unit of the MAC after a reset.
1340 e1000_configure_tx(struct e1000_adapter
*adapter
)
1343 struct e1000_hw
*hw
= &adapter
->hw
;
1344 uint32_t tdlen
, tctl
, tipg
, tarc
;
1345 uint32_t ipgr1
, ipgr2
;
1347 /* Setup the HW Tx Head and Tail descriptor pointers */
1349 switch (adapter
->num_tx_queues
) {
1351 tdba
= adapter
->tx_ring
[1].dma
;
1352 tdlen
= adapter
->tx_ring
[1].count
*
1353 sizeof(struct e1000_tx_desc
);
1354 E1000_WRITE_REG(hw
, TDBAL1
, (tdba
& 0x00000000ffffffffULL
));
1355 E1000_WRITE_REG(hw
, TDBAH1
, (tdba
>> 32));
1356 E1000_WRITE_REG(hw
, TDLEN1
, tdlen
);
1357 E1000_WRITE_REG(hw
, TDH1
, 0);
1358 E1000_WRITE_REG(hw
, TDT1
, 0);
1359 adapter
->tx_ring
[1].tdh
= E1000_TDH1
;
1360 adapter
->tx_ring
[1].tdt
= E1000_TDT1
;
1364 tdba
= adapter
->tx_ring
[0].dma
;
1365 tdlen
= adapter
->tx_ring
[0].count
*
1366 sizeof(struct e1000_tx_desc
);
1367 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1368 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1369 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1370 E1000_WRITE_REG(hw
, TDH
, 0);
1371 E1000_WRITE_REG(hw
, TDT
, 0);
1372 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1373 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1377 /* Set the default values for the Tx Inter Packet Gap timer */
1379 if (hw
->media_type
== e1000_media_type_fiber
||
1380 hw
->media_type
== e1000_media_type_internal_serdes
)
1381 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1383 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1385 switch (hw
->mac_type
) {
1386 case e1000_82542_rev2_0
:
1387 case e1000_82542_rev2_1
:
1388 tipg
= DEFAULT_82542_TIPG_IPGT
;
1389 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1390 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1393 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1394 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1397 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1398 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1399 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1401 /* Set the Tx Interrupt Delay register */
1403 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1404 if (hw
->mac_type
>= e1000_82540
)
1405 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1407 /* Program the Transmit Control Register */
1409 tctl
= E1000_READ_REG(hw
, TCTL
);
1411 tctl
&= ~E1000_TCTL_CT
;
1412 tctl
|= E1000_TCTL_EN
| E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1413 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1415 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1417 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1418 tarc
= E1000_READ_REG(hw
, TARC0
);
1419 tarc
|= ((1 << 25) | (1 << 21));
1420 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1421 tarc
= E1000_READ_REG(hw
, TARC1
);
1423 if (tctl
& E1000_TCTL_MULR
)
1427 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1430 e1000_config_collision_dist(hw
);
1432 /* Setup Transmit Descriptor Settings for eop descriptor */
1433 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1436 if (hw
->mac_type
< e1000_82543
)
1437 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1439 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1441 /* Cache if we're 82544 running in PCI-X because we'll
1442 * need this to apply a workaround later in the send path. */
1443 if (hw
->mac_type
== e1000_82544
&&
1444 hw
->bus_type
== e1000_bus_type_pcix
)
1445 adapter
->pcix_82544
= 1;
1449 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1450 * @adapter: board private structure
1451 * @rxdr: rx descriptor ring (for a specific queue) to setup
1453 * Returns 0 on success, negative on failure
1457 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1458 struct e1000_rx_ring
*rxdr
)
1460 struct pci_dev
*pdev
= adapter
->pdev
;
1463 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1464 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1465 if (!rxdr
->buffer_info
) {
1467 "Unable to allocate memory for the receive descriptor ring\n");
1470 memset(rxdr
->buffer_info
, 0, size
);
1472 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1473 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1474 if(!rxdr
->ps_page
) {
1475 vfree(rxdr
->buffer_info
);
1477 "Unable to allocate memory for the receive descriptor ring\n");
1480 memset(rxdr
->ps_page
, 0, size
);
1482 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1483 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1484 if(!rxdr
->ps_page_dma
) {
1485 vfree(rxdr
->buffer_info
);
1486 kfree(rxdr
->ps_page
);
1488 "Unable to allocate memory for the receive descriptor ring\n");
1491 memset(rxdr
->ps_page_dma
, 0, size
);
1493 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1494 desc_len
= sizeof(struct e1000_rx_desc
);
1496 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1498 /* Round up to nearest 4K */
1500 rxdr
->size
= rxdr
->count
* desc_len
;
1501 E1000_ROUNDUP(rxdr
->size
, 4096);
1503 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1507 "Unable to allocate memory for the receive descriptor ring\n");
1509 vfree(rxdr
->buffer_info
);
1510 kfree(rxdr
->ps_page
);
1511 kfree(rxdr
->ps_page_dma
);
1515 /* Fix for errata 23, can't cross 64kB boundary */
1516 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1517 void *olddesc
= rxdr
->desc
;
1518 dma_addr_t olddma
= rxdr
->dma
;
1519 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1520 "at %p\n", rxdr
->size
, rxdr
->desc
);
1521 /* Try again, without freeing the previous */
1522 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1523 /* Failed allocation, critical failure */
1525 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1527 "Unable to allocate memory "
1528 "for the receive descriptor ring\n");
1529 goto setup_rx_desc_die
;
1532 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1534 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1536 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1538 "Unable to allocate aligned memory "
1539 "for the receive descriptor ring\n");
1540 goto setup_rx_desc_die
;
1542 /* Free old allocation, new allocation was successful */
1543 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1546 memset(rxdr
->desc
, 0, rxdr
->size
);
1548 rxdr
->next_to_clean
= 0;
1549 rxdr
->next_to_use
= 0;
1550 rxdr
->rx_skb_top
= NULL
;
1551 rxdr
->rx_skb_prev
= NULL
;
1557 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1558 * (Descriptors) for all queues
1559 * @adapter: board private structure
1561 * If this function returns with an error, then it's possible one or
1562 * more of the rings is populated (while the rest are not). It is the
1563 * callers duty to clean those orphaned rings.
1565 * Return 0 on success, negative on failure
1569 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1573 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1574 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1577 "Allocation for Rx Queue %u failed\n", i
);
1586 * e1000_setup_rctl - configure the receive control registers
1587 * @adapter: Board private structure
1589 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1590 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1592 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1594 uint32_t rctl
, rfctl
;
1595 uint32_t psrctl
= 0;
1596 #ifdef CONFIG_E1000_PACKET_SPLIT
1600 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1602 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1604 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1605 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1606 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1608 if (adapter
->hw
.mac_type
> e1000_82543
)
1609 rctl
|= E1000_RCTL_SECRC
;
1611 if (adapter
->hw
.tbi_compatibility_on
== 1)
1612 rctl
|= E1000_RCTL_SBP
;
1614 rctl
&= ~E1000_RCTL_SBP
;
1616 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1617 rctl
&= ~E1000_RCTL_LPE
;
1619 rctl
|= E1000_RCTL_LPE
;
1621 /* Setup buffer sizes */
1622 if(adapter
->hw
.mac_type
>= e1000_82571
) {
1623 /* We can now specify buffers in 1K increments.
1624 * BSIZE and BSEX are ignored in this case. */
1625 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1627 rctl
&= ~E1000_RCTL_SZ_4096
;
1628 rctl
|= E1000_RCTL_BSEX
;
1629 switch (adapter
->rx_buffer_len
) {
1630 case E1000_RXBUFFER_2048
:
1632 rctl
|= E1000_RCTL_SZ_2048
;
1633 rctl
&= ~E1000_RCTL_BSEX
;
1635 case E1000_RXBUFFER_4096
:
1636 rctl
|= E1000_RCTL_SZ_4096
;
1638 case E1000_RXBUFFER_8192
:
1639 rctl
|= E1000_RCTL_SZ_8192
;
1641 case E1000_RXBUFFER_16384
:
1642 rctl
|= E1000_RCTL_SZ_16384
;
1647 #ifdef CONFIG_E1000_PACKET_SPLIT
1648 /* 82571 and greater support packet-split where the protocol
1649 * header is placed in skb->data and the packet data is
1650 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1651 * In the case of a non-split, skb->data is linearly filled,
1652 * followed by the page buffers. Therefore, skb->data is
1653 * sized to hold the largest protocol header.
1655 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1656 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1658 adapter
->rx_ps_pages
= pages
;
1660 adapter
->rx_ps_pages
= 0;
1662 if (adapter
->rx_ps_pages
) {
1663 /* Configure extra packet-split registers */
1664 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1665 rfctl
|= E1000_RFCTL_EXTEN
;
1666 /* disable IPv6 packet split support */
1667 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1668 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1670 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1672 psrctl
|= adapter
->rx_ps_bsize0
>>
1673 E1000_PSRCTL_BSIZE0_SHIFT
;
1675 switch (adapter
->rx_ps_pages
) {
1677 psrctl
|= PAGE_SIZE
<<
1678 E1000_PSRCTL_BSIZE3_SHIFT
;
1680 psrctl
|= PAGE_SIZE
<<
1681 E1000_PSRCTL_BSIZE2_SHIFT
;
1683 psrctl
|= PAGE_SIZE
>>
1684 E1000_PSRCTL_BSIZE1_SHIFT
;
1688 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1691 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1695 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1696 * @adapter: board private structure
1698 * Configure the Rx unit of the MAC after a reset.
1702 e1000_configure_rx(struct e1000_adapter
*adapter
)
1705 struct e1000_hw
*hw
= &adapter
->hw
;
1706 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1707 #ifdef CONFIG_E1000_MQ
1708 uint32_t reta
, mrqc
;
1712 if (adapter
->rx_ps_pages
) {
1713 rdlen
= adapter
->rx_ring
[0].count
*
1714 sizeof(union e1000_rx_desc_packet_split
);
1715 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1716 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1718 rdlen
= adapter
->rx_ring
[0].count
*
1719 sizeof(struct e1000_rx_desc
);
1720 adapter
->clean_rx
= e1000_clean_rx_irq
;
1721 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1724 /* disable receives while setting up the descriptors */
1725 rctl
= E1000_READ_REG(hw
, RCTL
);
1726 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1728 /* set the Receive Delay Timer Register */
1729 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1731 if (hw
->mac_type
>= e1000_82540
) {
1732 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1733 if(adapter
->itr
> 1)
1734 E1000_WRITE_REG(hw
, ITR
,
1735 1000000000 / (adapter
->itr
* 256));
1738 if (hw
->mac_type
>= e1000_82571
) {
1739 /* Reset delay timers after every interrupt */
1740 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1741 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1742 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1743 E1000_WRITE_FLUSH(hw
);
1746 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1747 * the Base and Length of the Rx Descriptor Ring */
1748 switch (adapter
->num_rx_queues
) {
1749 #ifdef CONFIG_E1000_MQ
1751 rdba
= adapter
->rx_ring
[1].dma
;
1752 E1000_WRITE_REG(hw
, RDBAL1
, (rdba
& 0x00000000ffffffffULL
));
1753 E1000_WRITE_REG(hw
, RDBAH1
, (rdba
>> 32));
1754 E1000_WRITE_REG(hw
, RDLEN1
, rdlen
);
1755 E1000_WRITE_REG(hw
, RDH1
, 0);
1756 E1000_WRITE_REG(hw
, RDT1
, 0);
1757 adapter
->rx_ring
[1].rdh
= E1000_RDH1
;
1758 adapter
->rx_ring
[1].rdt
= E1000_RDT1
;
1763 rdba
= adapter
->rx_ring
[0].dma
;
1764 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1765 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1766 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1767 E1000_WRITE_REG(hw
, RDH
, 0);
1768 E1000_WRITE_REG(hw
, RDT
, 0);
1769 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1770 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1774 #ifdef CONFIG_E1000_MQ
1775 if (adapter
->num_rx_queues
> 1) {
1776 uint32_t random
[10];
1778 get_random_bytes(&random
[0], 40);
1780 if (hw
->mac_type
<= e1000_82572
) {
1781 E1000_WRITE_REG(hw
, RSSIR
, 0);
1782 E1000_WRITE_REG(hw
, RSSIM
, 0);
1785 switch (adapter
->num_rx_queues
) {
1789 mrqc
= E1000_MRQC_ENABLE_RSS_2Q
;
1793 /* Fill out redirection table */
1794 for (i
= 0; i
< 32; i
++)
1795 E1000_WRITE_REG_ARRAY(hw
, RETA
, i
, reta
);
1796 /* Fill out hash function seeds */
1797 for (i
= 0; i
< 10; i
++)
1798 E1000_WRITE_REG_ARRAY(hw
, RSSRK
, i
, random
[i
]);
1800 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1801 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1802 E1000_WRITE_REG(hw
, MRQC
, mrqc
);
1805 /* Multiqueue and packet checksumming are mutually exclusive. */
1806 if (hw
->mac_type
>= e1000_82571
) {
1807 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1808 rxcsum
|= E1000_RXCSUM_PCSD
;
1809 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1814 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1815 if (hw
->mac_type
>= e1000_82543
) {
1816 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1817 if(adapter
->rx_csum
== TRUE
) {
1818 rxcsum
|= E1000_RXCSUM_TUOFL
;
1820 /* Enable 82571 IPv4 payload checksum for UDP fragments
1821 * Must be used in conjunction with packet-split. */
1822 if ((hw
->mac_type
>= e1000_82571
) &&
1823 (adapter
->rx_ps_pages
)) {
1824 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1827 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1828 /* don't need to clear IPPCSE as it defaults to 0 */
1830 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1832 #endif /* CONFIG_E1000_MQ */
1834 if (hw
->mac_type
== e1000_82573
)
1835 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1837 /* Enable Receives */
1838 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1842 * e1000_free_tx_resources - Free Tx Resources per Queue
1843 * @adapter: board private structure
1844 * @tx_ring: Tx descriptor ring for a specific queue
1846 * Free all transmit software resources
1850 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1851 struct e1000_tx_ring
*tx_ring
)
1853 struct pci_dev
*pdev
= adapter
->pdev
;
1855 e1000_clean_tx_ring(adapter
, tx_ring
);
1857 vfree(tx_ring
->buffer_info
);
1858 tx_ring
->buffer_info
= NULL
;
1860 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1862 tx_ring
->desc
= NULL
;
1866 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1867 * @adapter: board private structure
1869 * Free all transmit software resources
1873 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1877 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1878 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1882 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1883 struct e1000_buffer
*buffer_info
)
1885 if(buffer_info
->dma
) {
1886 pci_unmap_page(adapter
->pdev
,
1888 buffer_info
->length
,
1890 buffer_info
->dma
= 0;
1892 if(buffer_info
->skb
) {
1893 dev_kfree_skb_any(buffer_info
->skb
);
1894 buffer_info
->skb
= NULL
;
1899 * e1000_clean_tx_ring - Free Tx Buffers
1900 * @adapter: board private structure
1901 * @tx_ring: ring to be cleaned
1905 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1906 struct e1000_tx_ring
*tx_ring
)
1908 struct e1000_buffer
*buffer_info
;
1912 /* Free all the Tx ring sk_buffs */
1914 for(i
= 0; i
< tx_ring
->count
; i
++) {
1915 buffer_info
= &tx_ring
->buffer_info
[i
];
1916 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1919 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1920 memset(tx_ring
->buffer_info
, 0, size
);
1922 /* Zero out the descriptor ring */
1924 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1926 tx_ring
->next_to_use
= 0;
1927 tx_ring
->next_to_clean
= 0;
1928 tx_ring
->last_tx_tso
= 0;
1930 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1931 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1935 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1936 * @adapter: board private structure
1940 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1944 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1945 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1949 * e1000_free_rx_resources - Free Rx Resources
1950 * @adapter: board private structure
1951 * @rx_ring: ring to clean the resources from
1953 * Free all receive software resources
1957 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1958 struct e1000_rx_ring
*rx_ring
)
1960 struct pci_dev
*pdev
= adapter
->pdev
;
1962 e1000_clean_rx_ring(adapter
, rx_ring
);
1964 vfree(rx_ring
->buffer_info
);
1965 rx_ring
->buffer_info
= NULL
;
1966 kfree(rx_ring
->ps_page
);
1967 rx_ring
->ps_page
= NULL
;
1968 kfree(rx_ring
->ps_page_dma
);
1969 rx_ring
->ps_page_dma
= NULL
;
1971 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1973 rx_ring
->desc
= NULL
;
1977 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1978 * @adapter: board private structure
1980 * Free all receive software resources
1984 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1988 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1989 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1993 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1994 * @adapter: board private structure
1995 * @rx_ring: ring to free buffers from
1999 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
2000 struct e1000_rx_ring
*rx_ring
)
2002 struct e1000_buffer
*buffer_info
;
2003 struct e1000_ps_page
*ps_page
;
2004 struct e1000_ps_page_dma
*ps_page_dma
;
2005 struct pci_dev
*pdev
= adapter
->pdev
;
2009 /* Free all the Rx ring sk_buffs */
2011 for(i
= 0; i
< rx_ring
->count
; i
++) {
2012 buffer_info
= &rx_ring
->buffer_info
[i
];
2013 if(buffer_info
->skb
) {
2014 ps_page
= &rx_ring
->ps_page
[i
];
2015 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2016 pci_unmap_single(pdev
,
2018 buffer_info
->length
,
2019 PCI_DMA_FROMDEVICE
);
2021 dev_kfree_skb(buffer_info
->skb
);
2022 buffer_info
->skb
= NULL
;
2024 ps_page
= &rx_ring
->ps_page
[i
];
2025 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
2026 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
2027 if (!ps_page
->ps_page
[j
]) break;
2028 pci_unmap_page(pdev
,
2029 ps_page_dma
->ps_page_dma
[j
],
2030 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2031 ps_page_dma
->ps_page_dma
[j
] = 0;
2032 put_page(ps_page
->ps_page
[j
]);
2033 ps_page
->ps_page
[j
] = NULL
;
2037 /* there also may be some cached data in our adapter */
2038 if (rx_ring
->rx_skb_top
) {
2039 dev_kfree_skb(rx_ring
->rx_skb_top
);
2041 /* rx_skb_prev will be wiped out by rx_skb_top */
2042 rx_ring
->rx_skb_top
= NULL
;
2043 rx_ring
->rx_skb_prev
= NULL
;
2047 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2048 memset(rx_ring
->buffer_info
, 0, size
);
2049 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2050 memset(rx_ring
->ps_page
, 0, size
);
2051 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2052 memset(rx_ring
->ps_page_dma
, 0, size
);
2054 /* Zero out the descriptor ring */
2056 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2058 rx_ring
->next_to_clean
= 0;
2059 rx_ring
->next_to_use
= 0;
2061 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2062 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2066 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2067 * @adapter: board private structure
2071 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2075 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2076 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2079 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2080 * and memory write and invalidate disabled for certain operations
2083 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2085 struct net_device
*netdev
= adapter
->netdev
;
2088 e1000_pci_clear_mwi(&adapter
->hw
);
2090 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2091 rctl
|= E1000_RCTL_RST
;
2092 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2093 E1000_WRITE_FLUSH(&adapter
->hw
);
2096 if(netif_running(netdev
))
2097 e1000_clean_all_rx_rings(adapter
);
2101 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2103 struct net_device
*netdev
= adapter
->netdev
;
2106 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2107 rctl
&= ~E1000_RCTL_RST
;
2108 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2109 E1000_WRITE_FLUSH(&adapter
->hw
);
2112 if(adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2113 e1000_pci_set_mwi(&adapter
->hw
);
2115 if(netif_running(netdev
)) {
2116 e1000_configure_rx(adapter
);
2117 e1000_alloc_rx_buffers(adapter
, &adapter
->rx_ring
[0]);
2122 * e1000_set_mac - Change the Ethernet Address of the NIC
2123 * @netdev: network interface device structure
2124 * @p: pointer to an address structure
2126 * Returns 0 on success, negative on failure
2130 e1000_set_mac(struct net_device
*netdev
, void *p
)
2132 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2133 struct sockaddr
*addr
= p
;
2135 if(!is_valid_ether_addr(addr
->sa_data
))
2136 return -EADDRNOTAVAIL
;
2138 /* 82542 2.0 needs to be in reset to write receive address registers */
2140 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2141 e1000_enter_82542_rst(adapter
);
2143 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2144 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2146 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2148 /* With 82571 controllers, LAA may be overwritten (with the default)
2149 * due to controller reset from the other port. */
2150 if (adapter
->hw
.mac_type
== e1000_82571
) {
2151 /* activate the work around */
2152 adapter
->hw
.laa_is_present
= 1;
2154 /* Hold a copy of the LAA in RAR[14] This is done so that
2155 * between the time RAR[0] gets clobbered and the time it
2156 * gets fixed (in e1000_watchdog), the actual LAA is in one
2157 * of the RARs and no incoming packets directed to this port
2158 * are dropped. Eventaully the LAA will be in RAR[0] and
2160 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2161 E1000_RAR_ENTRIES
- 1);
2164 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2165 e1000_leave_82542_rst(adapter
);
2171 * e1000_set_multi - Multicast and Promiscuous mode set
2172 * @netdev: network interface device structure
2174 * The set_multi entry point is called whenever the multicast address
2175 * list or the network interface flags are updated. This routine is
2176 * responsible for configuring the hardware for proper multicast,
2177 * promiscuous mode, and all-multi behavior.
2181 e1000_set_multi(struct net_device
*netdev
)
2183 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2184 struct e1000_hw
*hw
= &adapter
->hw
;
2185 struct dev_mc_list
*mc_ptr
;
2187 uint32_t hash_value
;
2188 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2190 /* reserve RAR[14] for LAA over-write work-around */
2191 if (adapter
->hw
.mac_type
== e1000_82571
)
2194 /* Check for Promiscuous and All Multicast modes */
2196 rctl
= E1000_READ_REG(hw
, RCTL
);
2198 if(netdev
->flags
& IFF_PROMISC
) {
2199 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2200 } else if(netdev
->flags
& IFF_ALLMULTI
) {
2201 rctl
|= E1000_RCTL_MPE
;
2202 rctl
&= ~E1000_RCTL_UPE
;
2204 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2207 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2209 /* 82542 2.0 needs to be in reset to write receive address registers */
2211 if(hw
->mac_type
== e1000_82542_rev2_0
)
2212 e1000_enter_82542_rst(adapter
);
2214 /* load the first 14 multicast address into the exact filters 1-14
2215 * RAR 0 is used for the station MAC adddress
2216 * if there are not 14 addresses, go ahead and clear the filters
2217 * -- with 82571 controllers only 0-13 entries are filled here
2219 mc_ptr
= netdev
->mc_list
;
2221 for(i
= 1; i
< rar_entries
; i
++) {
2223 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2224 mc_ptr
= mc_ptr
->next
;
2226 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2227 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2231 /* clear the old settings from the multicast hash table */
2233 for(i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2234 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2236 /* load any remaining addresses into the hash table */
2238 for(; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2239 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2240 e1000_mta_set(hw
, hash_value
);
2243 if(hw
->mac_type
== e1000_82542_rev2_0
)
2244 e1000_leave_82542_rst(adapter
);
2247 /* Need to wait a few seconds after link up to get diagnostic information from
2251 e1000_update_phy_info(unsigned long data
)
2253 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2254 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2258 * e1000_82547_tx_fifo_stall - Timer Call-back
2259 * @data: pointer to adapter cast into an unsigned long
2263 e1000_82547_tx_fifo_stall(unsigned long data
)
2265 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2266 struct net_device
*netdev
= adapter
->netdev
;
2269 if(atomic_read(&adapter
->tx_fifo_stall
)) {
2270 if((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2271 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2272 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2273 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2274 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2275 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2276 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2277 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2278 tctl
& ~E1000_TCTL_EN
);
2279 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2280 adapter
->tx_head_addr
);
2281 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2282 adapter
->tx_head_addr
);
2283 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2284 adapter
->tx_head_addr
);
2285 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2286 adapter
->tx_head_addr
);
2287 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2288 E1000_WRITE_FLUSH(&adapter
->hw
);
2290 adapter
->tx_fifo_head
= 0;
2291 atomic_set(&adapter
->tx_fifo_stall
, 0);
2292 netif_wake_queue(netdev
);
2294 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2300 * e1000_watchdog - Timer Call-back
2301 * @data: pointer to adapter cast into an unsigned long
2304 e1000_watchdog(unsigned long data
)
2306 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2308 /* Do the rest outside of interrupt context */
2309 schedule_work(&adapter
->watchdog_task
);
2313 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2315 struct net_device
*netdev
= adapter
->netdev
;
2316 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2319 e1000_check_for_link(&adapter
->hw
);
2320 if (adapter
->hw
.mac_type
== e1000_82573
) {
2321 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2322 if(adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2323 e1000_update_mng_vlan(adapter
);
2326 if((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2327 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2328 link
= !adapter
->hw
.serdes_link_down
;
2330 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2333 if(!netif_carrier_ok(netdev
)) {
2334 e1000_get_speed_and_duplex(&adapter
->hw
,
2335 &adapter
->link_speed
,
2336 &adapter
->link_duplex
);
2338 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2339 adapter
->link_speed
,
2340 adapter
->link_duplex
== FULL_DUPLEX
?
2341 "Full Duplex" : "Half Duplex");
2343 /* tweak tx_queue_len according to speed/duplex */
2344 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2345 adapter
->tx_timeout_factor
= 1;
2346 if (adapter
->link_duplex
== HALF_DUPLEX
) {
2347 switch (adapter
->link_speed
) {
2349 netdev
->tx_queue_len
= 10;
2350 adapter
->tx_timeout_factor
= 8;
2353 netdev
->tx_queue_len
= 100;
2358 netif_carrier_on(netdev
);
2359 netif_wake_queue(netdev
);
2360 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2361 adapter
->smartspeed
= 0;
2364 if(netif_carrier_ok(netdev
)) {
2365 adapter
->link_speed
= 0;
2366 adapter
->link_duplex
= 0;
2367 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2368 netif_carrier_off(netdev
);
2369 netif_stop_queue(netdev
);
2370 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2373 e1000_smartspeed(adapter
);
2376 e1000_update_stats(adapter
);
2378 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2379 adapter
->tpt_old
= adapter
->stats
.tpt
;
2380 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2381 adapter
->colc_old
= adapter
->stats
.colc
;
2383 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2384 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2385 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2386 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2388 e1000_update_adaptive(&adapter
->hw
);
2390 #ifdef CONFIG_E1000_MQ
2391 txdr
= *per_cpu_ptr(adapter
->cpu_tx_ring
, smp_processor_id());
2393 if (!netif_carrier_ok(netdev
)) {
2394 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2395 /* We've lost link, so the controller stops DMA,
2396 * but we've got queued Tx work that's never going
2397 * to get done, so reset controller to flush Tx.
2398 * (Do the reset outside of interrupt context). */
2399 schedule_work(&adapter
->tx_timeout_task
);
2403 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2404 if(adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2405 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2406 * asymmetrical Tx or Rx gets ITR=8000; everyone
2407 * else is between 2000-8000. */
2408 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2409 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2410 adapter
->gotcl
- adapter
->gorcl
:
2411 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2412 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2413 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2416 /* Cause software interrupt to ensure rx ring is cleaned */
2417 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2419 /* Force detection of hung controller every watchdog period */
2420 adapter
->detect_tx_hung
= TRUE
;
2422 /* With 82571 controllers, LAA may be overwritten due to controller
2423 * reset from the other port. Set the appropriate LAA in RAR[0] */
2424 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2425 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2427 /* Reset the timer */
2428 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2431 #define E1000_TX_FLAGS_CSUM 0x00000001
2432 #define E1000_TX_FLAGS_VLAN 0x00000002
2433 #define E1000_TX_FLAGS_TSO 0x00000004
2434 #define E1000_TX_FLAGS_IPV4 0x00000008
2435 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2436 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2439 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2440 struct sk_buff
*skb
)
2443 struct e1000_context_desc
*context_desc
;
2444 struct e1000_buffer
*buffer_info
;
2446 uint32_t cmd_length
= 0;
2447 uint16_t ipcse
= 0, tucse
, mss
;
2448 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2451 if(skb_shinfo(skb
)->tso_size
) {
2452 if (skb_header_cloned(skb
)) {
2453 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2458 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2459 mss
= skb_shinfo(skb
)->tso_size
;
2460 if(skb
->protocol
== ntohs(ETH_P_IP
)) {
2461 skb
->nh
.iph
->tot_len
= 0;
2462 skb
->nh
.iph
->check
= 0;
2464 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2469 cmd_length
= E1000_TXD_CMD_IP
;
2470 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2471 #ifdef NETIF_F_TSO_IPV6
2472 } else if(skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2473 skb
->nh
.ipv6h
->payload_len
= 0;
2475 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2476 &skb
->nh
.ipv6h
->daddr
,
2483 ipcss
= skb
->nh
.raw
- skb
->data
;
2484 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2485 tucss
= skb
->h
.raw
- skb
->data
;
2486 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2489 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2490 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2492 i
= tx_ring
->next_to_use
;
2493 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2494 buffer_info
= &tx_ring
->buffer_info
[i
];
2496 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2497 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2498 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2499 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2500 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2501 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2502 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2503 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2504 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2506 buffer_info
->time_stamp
= jiffies
;
2508 if (++i
== tx_ring
->count
) i
= 0;
2509 tx_ring
->next_to_use
= i
;
2518 static inline boolean_t
2519 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2520 struct sk_buff
*skb
)
2522 struct e1000_context_desc
*context_desc
;
2523 struct e1000_buffer
*buffer_info
;
2527 if(likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2528 css
= skb
->h
.raw
- skb
->data
;
2530 i
= tx_ring
->next_to_use
;
2531 buffer_info
= &tx_ring
->buffer_info
[i
];
2532 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2534 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2535 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2536 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2537 context_desc
->tcp_seg_setup
.data
= 0;
2538 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2540 buffer_info
->time_stamp
= jiffies
;
2542 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2543 tx_ring
->next_to_use
= i
;
2551 #define E1000_MAX_TXD_PWR 12
2552 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2555 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2556 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2557 unsigned int nr_frags
, unsigned int mss
)
2559 struct e1000_buffer
*buffer_info
;
2560 unsigned int len
= skb
->len
;
2561 unsigned int offset
= 0, size
, count
= 0, i
;
2563 len
-= skb
->data_len
;
2565 i
= tx_ring
->next_to_use
;
2568 buffer_info
= &tx_ring
->buffer_info
[i
];
2569 size
= min(len
, max_per_txd
);
2571 /* Workaround for Controller erratum --
2572 * descriptor for non-tso packet in a linear SKB that follows a
2573 * tso gets written back prematurely before the data is fully
2574 * DMAd to the controller */
2575 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2576 !skb_shinfo(skb
)->tso_size
) {
2577 tx_ring
->last_tx_tso
= 0;
2581 /* Workaround for premature desc write-backs
2582 * in TSO mode. Append 4-byte sentinel desc */
2583 if(unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2586 /* work-around for errata 10 and it applies
2587 * to all controllers in PCI-X mode
2588 * The fix is to make sure that the first descriptor of a
2589 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2591 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2592 (size
> 2015) && count
== 0))
2595 /* Workaround for potential 82544 hang in PCI-X. Avoid
2596 * terminating buffers within evenly-aligned dwords. */
2597 if(unlikely(adapter
->pcix_82544
&&
2598 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2602 buffer_info
->length
= size
;
2604 pci_map_single(adapter
->pdev
,
2608 buffer_info
->time_stamp
= jiffies
;
2613 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2616 for(f
= 0; f
< nr_frags
; f
++) {
2617 struct skb_frag_struct
*frag
;
2619 frag
= &skb_shinfo(skb
)->frags
[f
];
2621 offset
= frag
->page_offset
;
2624 buffer_info
= &tx_ring
->buffer_info
[i
];
2625 size
= min(len
, max_per_txd
);
2627 /* Workaround for premature desc write-backs
2628 * in TSO mode. Append 4-byte sentinel desc */
2629 if(unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2632 /* Workaround for potential 82544 hang in PCI-X.
2633 * Avoid terminating buffers within evenly-aligned
2635 if(unlikely(adapter
->pcix_82544
&&
2636 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2640 buffer_info
->length
= size
;
2642 pci_map_page(adapter
->pdev
,
2647 buffer_info
->time_stamp
= jiffies
;
2652 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2656 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2657 tx_ring
->buffer_info
[i
].skb
= skb
;
2658 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2664 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2665 int tx_flags
, int count
)
2667 struct e1000_tx_desc
*tx_desc
= NULL
;
2668 struct e1000_buffer
*buffer_info
;
2669 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2672 if(likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2673 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2675 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2677 if(likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2678 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2681 if(likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2682 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2683 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2686 if(unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2687 txd_lower
|= E1000_TXD_CMD_VLE
;
2688 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2691 i
= tx_ring
->next_to_use
;
2694 buffer_info
= &tx_ring
->buffer_info
[i
];
2695 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2696 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2697 tx_desc
->lower
.data
=
2698 cpu_to_le32(txd_lower
| buffer_info
->length
);
2699 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2700 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2703 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2705 /* Force memory writes to complete before letting h/w
2706 * know there are new descriptors to fetch. (Only
2707 * applicable for weak-ordered memory model archs,
2708 * such as IA-64). */
2711 tx_ring
->next_to_use
= i
;
2712 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2716 * 82547 workaround to avoid controller hang in half-duplex environment.
2717 * The workaround is to avoid queuing a large packet that would span
2718 * the internal Tx FIFO ring boundary by notifying the stack to resend
2719 * the packet at a later time. This gives the Tx FIFO an opportunity to
2720 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2721 * to the beginning of the Tx FIFO.
2724 #define E1000_FIFO_HDR 0x10
2725 #define E1000_82547_PAD_LEN 0x3E0
2728 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2730 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2731 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2733 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2735 if(adapter
->link_duplex
!= HALF_DUPLEX
)
2736 goto no_fifo_stall_required
;
2738 if(atomic_read(&adapter
->tx_fifo_stall
))
2741 if(skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2742 atomic_set(&adapter
->tx_fifo_stall
, 1);
2746 no_fifo_stall_required
:
2747 adapter
->tx_fifo_head
+= skb_fifo_len
;
2748 if(adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2749 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2753 #define MINIMUM_DHCP_PACKET_SIZE 282
2755 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2757 struct e1000_hw
*hw
= &adapter
->hw
;
2758 uint16_t length
, offset
;
2759 if(vlan_tx_tag_present(skb
)) {
2760 if(!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2761 ( adapter
->hw
.mng_cookie
.status
&
2762 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2765 if ((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2766 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2767 if((htons(ETH_P_IP
) == eth
->h_proto
)) {
2768 const struct iphdr
*ip
=
2769 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2770 if(IPPROTO_UDP
== ip
->protocol
) {
2771 struct udphdr
*udp
=
2772 (struct udphdr
*)((uint8_t *)ip
+
2774 if(ntohs(udp
->dest
) == 67) {
2775 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2776 length
= skb
->len
- offset
;
2778 return e1000_mng_write_dhcp_info(hw
,
2788 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2790 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2792 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2793 struct e1000_tx_ring
*tx_ring
;
2794 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2795 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2796 unsigned int tx_flags
= 0;
2797 unsigned int len
= skb
->len
;
2798 unsigned long flags
;
2799 unsigned int nr_frags
= 0;
2800 unsigned int mss
= 0;
2804 len
-= skb
->data_len
;
2806 #ifdef CONFIG_E1000_MQ
2807 tx_ring
= *per_cpu_ptr(adapter
->cpu_tx_ring
, smp_processor_id());
2809 tx_ring
= adapter
->tx_ring
;
2812 if (unlikely(skb
->len
<= 0)) {
2813 dev_kfree_skb_any(skb
);
2814 return NETDEV_TX_OK
;
2818 mss
= skb_shinfo(skb
)->tso_size
;
2819 /* The controller does a simple calculation to
2820 * make sure there is enough room in the FIFO before
2821 * initiating the DMA for each buffer. The calc is:
2822 * 4 = ceil(buffer len/mss). To make sure we don't
2823 * overrun the FIFO, adjust the max buffer len if mss
2827 max_per_txd
= min(mss
<< 2, max_per_txd
);
2828 max_txd_pwr
= fls(max_per_txd
) - 1;
2830 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2831 * points to just header, pull a few bytes of payload from
2832 * frags into skb->data */
2833 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2834 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
)) &&
2835 (adapter
->hw
.mac_type
== e1000_82571
||
2836 adapter
->hw
.mac_type
== e1000_82572
)) {
2837 unsigned int pull_size
;
2838 pull_size
= min((unsigned int)4, skb
->data_len
);
2839 if (!__pskb_pull_tail(skb
, pull_size
)) {
2840 printk(KERN_ERR
"__pskb_pull_tail failed.\n");
2841 dev_kfree_skb_any(skb
);
2844 len
= skb
->len
- skb
->data_len
;
2848 if((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2849 /* reserve a descriptor for the offload context */
2853 if(skb
->ip_summed
== CHECKSUM_HW
)
2858 /* Controller Erratum workaround */
2859 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2860 !skb_shinfo(skb
)->tso_size
)
2864 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2866 if(adapter
->pcix_82544
)
2869 /* work-around for errata 10 and it applies to all controllers
2870 * in PCI-X mode, so add one more descriptor to the count
2872 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2876 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2877 for(f
= 0; f
< nr_frags
; f
++)
2878 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2880 if(adapter
->pcix_82544
)
2883 if(adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2884 e1000_transfer_dhcp_info(adapter
, skb
);
2886 local_irq_save(flags
);
2887 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2888 /* Collision - tell upper layer to requeue */
2889 local_irq_restore(flags
);
2890 return NETDEV_TX_LOCKED
;
2893 /* need: count + 2 desc gap to keep tail from touching
2894 * head, otherwise try next time */
2895 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2896 netif_stop_queue(netdev
);
2897 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2898 return NETDEV_TX_BUSY
;
2901 if(unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2902 if(unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2903 netif_stop_queue(netdev
);
2904 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2905 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2906 return NETDEV_TX_BUSY
;
2910 if(unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2911 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2912 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2915 first
= tx_ring
->next_to_use
;
2917 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2919 dev_kfree_skb_any(skb
);
2920 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2921 return NETDEV_TX_OK
;
2925 tx_ring
->last_tx_tso
= 1;
2926 tx_flags
|= E1000_TX_FLAGS_TSO
;
2927 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2928 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2930 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2931 * 82571 hardware supports TSO capabilities for IPv6 as well...
2932 * no longer assume, we must. */
2933 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2934 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2936 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2937 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2938 max_per_txd
, nr_frags
, mss
));
2940 netdev
->trans_start
= jiffies
;
2942 /* Make sure there is space in the ring for the next send. */
2943 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2944 netif_stop_queue(netdev
);
2946 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2947 return NETDEV_TX_OK
;
2951 * e1000_tx_timeout - Respond to a Tx Hang
2952 * @netdev: network interface device structure
2956 e1000_tx_timeout(struct net_device
*netdev
)
2958 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2960 /* Do the reset outside of interrupt context */
2961 schedule_work(&adapter
->tx_timeout_task
);
2965 e1000_tx_timeout_task(struct net_device
*netdev
)
2967 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2969 adapter
->tx_timeout_count
++;
2970 e1000_down(adapter
);
2975 * e1000_get_stats - Get System Network Statistics
2976 * @netdev: network interface device structure
2978 * Returns the address of the device statistics structure.
2979 * The statistics are actually updated from the timer callback.
2982 static struct net_device_stats
*
2983 e1000_get_stats(struct net_device
*netdev
)
2985 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2987 /* only return the current stats */
2988 return &adapter
->net_stats
;
2992 * e1000_change_mtu - Change the Maximum Transfer Unit
2993 * @netdev: network interface device structure
2994 * @new_mtu: new value for maximum frame size
2996 * Returns 0 on success, negative on failure
3000 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3002 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3003 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3005 if((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3006 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3007 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3011 /* Adapter-specific max frame size limits. */
3012 switch (adapter
->hw
.mac_type
) {
3013 case e1000_82542_rev2_0
:
3014 case e1000_82542_rev2_1
:
3016 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3017 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3023 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3024 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3025 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3030 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3034 /* since the driver code now supports splitting a packet across
3035 * multiple descriptors, most of the fifo related limitations on
3036 * jumbo frame traffic have gone away.
3037 * simply use 2k descriptors for everything.
3039 * NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3040 * means we reserve 2 more, this pushes us to allocate from the next
3042 * i.e. RXBUFFER_2048 --> size-4096 slab */
3044 /* recent hardware supports 1KB granularity */
3045 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3046 adapter
->rx_buffer_len
=
3047 ((max_frame
< E1000_RXBUFFER_2048
) ?
3048 max_frame
: E1000_RXBUFFER_2048
);
3049 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
3051 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3053 netdev
->mtu
= new_mtu
;
3055 if(netif_running(netdev
)) {
3056 e1000_down(adapter
);
3060 adapter
->hw
.max_frame_size
= max_frame
;
3066 * e1000_update_stats - Update the board statistics counters
3067 * @adapter: board private structure
3071 e1000_update_stats(struct e1000_adapter
*adapter
)
3073 struct e1000_hw
*hw
= &adapter
->hw
;
3074 unsigned long flags
;
3077 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3079 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3081 /* these counters are modified from e1000_adjust_tbi_stats,
3082 * called from the interrupt context, so they must only
3083 * be written while holding adapter->stats_lock
3086 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3087 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3088 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3089 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3090 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3091 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3092 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3093 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3094 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3095 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3096 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3097 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3098 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3100 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3101 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3102 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3103 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3104 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3105 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3106 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3107 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3108 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3109 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3110 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3111 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3112 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3113 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3114 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3115 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3116 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3117 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3118 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3119 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3120 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3121 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3122 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3123 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3124 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3125 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3126 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3127 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3128 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3129 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3130 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3131 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3132 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3133 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3135 /* used for adaptive IFS */
3137 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3138 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3139 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3140 adapter
->stats
.colc
+= hw
->collision_delta
;
3142 if(hw
->mac_type
>= e1000_82543
) {
3143 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3144 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3145 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3146 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3147 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3148 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3150 if(hw
->mac_type
> e1000_82547_rev_2
) {
3151 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3152 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3153 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3154 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3155 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3156 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3157 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3158 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3159 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3162 /* Fill out the OS statistics structure */
3164 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3165 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3166 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3167 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3168 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3169 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3173 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3174 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3175 adapter
->stats
.rlec
+ adapter
->stats
.cexterr
;
3176 adapter
->net_stats
.rx_dropped
= 0;
3177 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
3178 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3179 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3180 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3184 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3185 adapter
->stats
.latecol
;
3186 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3187 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3188 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3190 /* Tx Dropped needs to be maintained elsewhere */
3194 if(hw
->media_type
== e1000_media_type_copper
) {
3195 if((adapter
->link_speed
== SPEED_1000
) &&
3196 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3197 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3198 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3201 if((hw
->mac_type
<= e1000_82546
) &&
3202 (hw
->phy_type
== e1000_phy_m88
) &&
3203 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3204 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3207 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3210 #ifdef CONFIG_E1000_MQ
3212 e1000_rx_schedule(void *data
)
3214 struct net_device
*poll_dev
, *netdev
= data
;
3215 struct e1000_adapter
*adapter
= netdev
->priv
;
3216 int this_cpu
= get_cpu();
3218 poll_dev
= *per_cpu_ptr(adapter
->cpu_netdev
, this_cpu
);
3219 if (poll_dev
== NULL
) {
3224 if (likely(netif_rx_schedule_prep(poll_dev
)))
3225 __netif_rx_schedule(poll_dev
);
3227 e1000_irq_enable(adapter
);
3234 * e1000_intr - Interrupt Handler
3235 * @irq: interrupt number
3236 * @data: pointer to a network interface device structure
3237 * @pt_regs: CPU registers structure
3241 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3243 struct net_device
*netdev
= data
;
3244 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3245 struct e1000_hw
*hw
= &adapter
->hw
;
3246 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3247 #if defined(CONFIG_E1000_NAPI) && defined(CONFIG_E1000_MQ) || !defined(CONFIG_E1000_NAPI)
3252 return IRQ_NONE
; /* Not our interrupt */
3254 if(unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3255 hw
->get_link_status
= 1;
3256 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3259 #ifdef CONFIG_E1000_NAPI
3260 atomic_inc(&adapter
->irq_sem
);
3261 E1000_WRITE_REG(hw
, IMC
, ~0);
3262 E1000_WRITE_FLUSH(hw
);
3263 #ifdef CONFIG_E1000_MQ
3264 if (atomic_read(&adapter
->rx_sched_call_data
.count
) == 0) {
3265 /* We must setup the cpumask once count == 0 since
3266 * each cpu bit is cleared when the work is done. */
3267 adapter
->rx_sched_call_data
.cpumask
= adapter
->cpumask
;
3268 atomic_add(adapter
->num_rx_queues
- 1, &adapter
->irq_sem
);
3269 atomic_set(&adapter
->rx_sched_call_data
.count
,
3270 adapter
->num_rx_queues
);
3271 smp_call_async_mask(&adapter
->rx_sched_call_data
);
3273 printk("call_data.count == %u\n", atomic_read(&adapter
->rx_sched_call_data
.count
));
3275 #else /* if !CONFIG_E1000_MQ */
3276 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3277 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3279 e1000_irq_enable(adapter
);
3280 #endif /* CONFIG_E1000_MQ */
3282 #else /* if !CONFIG_E1000_NAPI */
3283 /* Writing IMC and IMS is needed for 82547.
3284 Due to Hub Link bus being occupied, an interrupt
3285 de-assertion message is not able to be sent.
3286 When an interrupt assertion message is generated later,
3287 two messages are re-ordered and sent out.
3288 That causes APIC to think 82547 is in de-assertion
3289 state, while 82547 is in assertion state, resulting
3290 in dead lock. Writing IMC forces 82547 into
3293 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
){
3294 atomic_inc(&adapter
->irq_sem
);
3295 E1000_WRITE_REG(hw
, IMC
, ~0);
3298 for(i
= 0; i
< E1000_MAX_INTR
; i
++)
3299 if(unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3300 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3303 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3304 e1000_irq_enable(adapter
);
3306 #endif /* CONFIG_E1000_NAPI */
3311 #ifdef CONFIG_E1000_NAPI
3313 * e1000_clean - NAPI Rx polling callback
3314 * @adapter: board private structure
3318 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3320 struct e1000_adapter
*adapter
;
3321 int work_to_do
= min(*budget
, poll_dev
->quota
);
3322 int tx_cleaned
, i
= 0, work_done
= 0;
3324 /* Must NOT use netdev_priv macro here. */
3325 adapter
= poll_dev
->priv
;
3327 /* Keep link state information with original netdev */
3328 if (!netif_carrier_ok(adapter
->netdev
))
3331 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3333 if (unlikely(i
== adapter
->num_rx_queues
))
3337 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3338 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3339 &work_done
, work_to_do
);
3341 *budget
-= work_done
;
3342 poll_dev
->quota
-= work_done
;
3344 /* If no Tx and not enough Rx work done, exit the polling mode */
3345 if((!tx_cleaned
&& (work_done
== 0)) ||
3346 !netif_running(adapter
->netdev
)) {
3348 netif_rx_complete(poll_dev
);
3349 e1000_irq_enable(adapter
);
3358 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3359 * @adapter: board private structure
3363 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3364 struct e1000_tx_ring
*tx_ring
)
3366 struct net_device
*netdev
= adapter
->netdev
;
3367 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3368 struct e1000_buffer
*buffer_info
;
3369 unsigned int i
, eop
;
3370 boolean_t cleaned
= FALSE
;
3372 i
= tx_ring
->next_to_clean
;
3373 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3374 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3376 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3377 for(cleaned
= FALSE
; !cleaned
; ) {
3378 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3379 buffer_info
= &tx_ring
->buffer_info
[i
];
3380 cleaned
= (i
== eop
);
3382 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3384 tx_desc
->buffer_addr
= 0;
3385 tx_desc
->lower
.data
= 0;
3386 tx_desc
->upper
.data
= 0;
3388 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
3391 #ifdef CONFIG_E1000_MQ
3392 tx_ring
->tx_stats
.packets
++;
3395 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3396 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3399 tx_ring
->next_to_clean
= i
;
3401 spin_lock(&tx_ring
->tx_lock
);
3403 if(unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3404 netif_carrier_ok(netdev
)))
3405 netif_wake_queue(netdev
);
3407 spin_unlock(&tx_ring
->tx_lock
);
3409 if (adapter
->detect_tx_hung
) {
3410 /* Detect a transmit hang in hardware, this serializes the
3411 * check with the clearing of time_stamp and movement of i */
3412 adapter
->detect_tx_hung
= FALSE
;
3413 if (tx_ring
->buffer_info
[eop
].dma
&&
3414 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3415 adapter
->tx_timeout_factor
* HZ
)
3416 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3417 E1000_STATUS_TXOFF
)) {
3419 /* detected Tx unit hang */
3420 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3424 " next_to_use <%x>\n"
3425 " next_to_clean <%x>\n"
3426 "buffer_info[next_to_clean]\n"
3427 " time_stamp <%lx>\n"
3428 " next_to_watch <%x>\n"
3430 " next_to_watch.status <%x>\n",
3431 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3432 sizeof(struct e1000_tx_ring
)),
3433 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3434 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3435 tx_ring
->next_to_use
,
3436 tx_ring
->next_to_clean
,
3437 tx_ring
->buffer_info
[eop
].time_stamp
,
3440 eop_desc
->upper
.fields
.status
);
3441 netif_stop_queue(netdev
);
3448 * e1000_rx_checksum - Receive Checksum Offload for 82543
3449 * @adapter: board private structure
3450 * @status_err: receive descriptor status and error fields
3451 * @csum: receive descriptor csum field
3452 * @sk_buff: socket buffer with received data
3456 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3457 uint32_t status_err
, uint32_t csum
,
3458 struct sk_buff
*skb
)
3460 uint16_t status
= (uint16_t)status_err
;
3461 uint8_t errors
= (uint8_t)(status_err
>> 24);
3462 skb
->ip_summed
= CHECKSUM_NONE
;
3464 /* 82543 or newer only */
3465 if(unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3466 /* Ignore Checksum bit is set */
3467 if(unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3468 /* TCP/UDP checksum error bit is set */
3469 if(unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3470 /* let the stack verify checksum errors */
3471 adapter
->hw_csum_err
++;
3474 /* TCP/UDP Checksum has not been calculated */
3475 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3476 if(!(status
& E1000_RXD_STAT_TCPCS
))
3479 if(!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3482 /* It must be a TCP or UDP packet with a valid checksum */
3483 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3484 /* TCP checksum is good */
3485 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3486 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3487 /* IP fragment with UDP payload */
3488 /* Hardware complements the payload checksum, so we undo it
3489 * and then put the value in host order for further stack use.
3491 csum
= ntohl(csum
^ 0xFFFF);
3493 skb
->ip_summed
= CHECKSUM_HW
;
3495 adapter
->hw_csum_good
++;
3499 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3500 * @adapter: board private structure
3504 #ifdef CONFIG_E1000_NAPI
3505 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3506 struct e1000_rx_ring
*rx_ring
,
3507 int *work_done
, int work_to_do
)
3509 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3510 struct e1000_rx_ring
*rx_ring
)
3513 struct net_device
*netdev
= adapter
->netdev
;
3514 struct pci_dev
*pdev
= adapter
->pdev
;
3515 struct e1000_rx_desc
*rx_desc
;
3516 struct e1000_buffer
*buffer_info
;
3517 struct sk_buff
*skb
;
3518 unsigned long flags
;
3522 boolean_t cleaned
= FALSE
;
3524 i
= rx_ring
->next_to_clean
;
3525 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3527 while(rx_desc
->status
& E1000_RXD_STAT_DD
) {
3528 buffer_info
= &rx_ring
->buffer_info
[i
];
3529 #ifdef CONFIG_E1000_NAPI
3530 if(*work_done
>= work_to_do
)
3536 pci_unmap_single(pdev
,
3538 buffer_info
->length
,
3539 PCI_DMA_FROMDEVICE
);
3541 skb
= buffer_info
->skb
;
3542 length
= le16_to_cpu(rx_desc
->length
);
3544 if(unlikely(!(rx_desc
->status
& E1000_RXD_STAT_EOP
))) {
3545 /* All receives must fit into a single buffer */
3546 E1000_DBG("%s: Receive packet consumed multiple"
3547 " buffers\n", netdev
->name
);
3548 dev_kfree_skb_irq(skb
);
3552 if(unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3553 last_byte
= *(skb
->data
+ length
- 1);
3554 if(TBI_ACCEPT(&adapter
->hw
, rx_desc
->status
,
3555 rx_desc
->errors
, length
, last_byte
)) {
3556 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3557 e1000_tbi_adjust_stats(&adapter
->hw
,
3560 spin_unlock_irqrestore(&adapter
->stats_lock
,
3564 dev_kfree_skb_irq(skb
);
3570 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
3572 /* Receive Checksum Offload */
3573 e1000_rx_checksum(adapter
,
3574 (uint32_t)(rx_desc
->status
) |
3575 ((uint32_t)(rx_desc
->errors
) << 24),
3576 rx_desc
->csum
, skb
);
3577 skb
->protocol
= eth_type_trans(skb
, netdev
);
3578 #ifdef CONFIG_E1000_NAPI
3579 if(unlikely(adapter
->vlgrp
&&
3580 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3581 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3582 le16_to_cpu(rx_desc
->special
) &
3583 E1000_RXD_SPC_VLAN_MASK
);
3585 netif_receive_skb(skb
);
3587 #else /* CONFIG_E1000_NAPI */
3588 if(unlikely(adapter
->vlgrp
&&
3589 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3590 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3591 le16_to_cpu(rx_desc
->special
) &
3592 E1000_RXD_SPC_VLAN_MASK
);
3596 #endif /* CONFIG_E1000_NAPI */
3597 netdev
->last_rx
= jiffies
;
3598 #ifdef CONFIG_E1000_MQ
3599 rx_ring
->rx_stats
.packets
++;
3600 rx_ring
->rx_stats
.bytes
+= length
;
3604 rx_desc
->status
= 0;
3605 buffer_info
->skb
= NULL
;
3606 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3608 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3610 rx_ring
->next_to_clean
= i
;
3611 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3617 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3618 * @adapter: board private structure
3622 #ifdef CONFIG_E1000_NAPI
3623 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3624 struct e1000_rx_ring
*rx_ring
,
3625 int *work_done
, int work_to_do
)
3627 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3628 struct e1000_rx_ring
*rx_ring
)
3631 union e1000_rx_desc_packet_split
*rx_desc
;
3632 struct net_device
*netdev
= adapter
->netdev
;
3633 struct pci_dev
*pdev
= adapter
->pdev
;
3634 struct e1000_buffer
*buffer_info
;
3635 struct e1000_ps_page
*ps_page
;
3636 struct e1000_ps_page_dma
*ps_page_dma
;
3637 struct sk_buff
*skb
;
3639 uint32_t length
, staterr
;
3640 boolean_t cleaned
= FALSE
;
3642 i
= rx_ring
->next_to_clean
;
3643 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3644 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3646 while(staterr
& E1000_RXD_STAT_DD
) {
3647 buffer_info
= &rx_ring
->buffer_info
[i
];
3648 ps_page
= &rx_ring
->ps_page
[i
];
3649 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3650 #ifdef CONFIG_E1000_NAPI
3651 if(unlikely(*work_done
>= work_to_do
))
3656 pci_unmap_single(pdev
, buffer_info
->dma
,
3657 buffer_info
->length
,
3658 PCI_DMA_FROMDEVICE
);
3660 skb
= buffer_info
->skb
;
3662 if(unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3663 E1000_DBG("%s: Packet Split buffers didn't pick up"
3664 " the full packet\n", netdev
->name
);
3665 dev_kfree_skb_irq(skb
);
3669 if(unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3670 dev_kfree_skb_irq(skb
);
3674 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3676 if(unlikely(!length
)) {
3677 E1000_DBG("%s: Last part of the packet spanning"
3678 " multiple descriptors\n", netdev
->name
);
3679 dev_kfree_skb_irq(skb
);
3684 skb_put(skb
, length
);
3686 for(j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3687 if(!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3690 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3691 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3692 ps_page_dma
->ps_page_dma
[j
] = 0;
3693 skb_shinfo(skb
)->frags
[j
].page
=
3694 ps_page
->ps_page
[j
];
3695 ps_page
->ps_page
[j
] = NULL
;
3696 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3697 skb_shinfo(skb
)->frags
[j
].size
= length
;
3698 skb_shinfo(skb
)->nr_frags
++;
3700 skb
->data_len
+= length
;
3703 e1000_rx_checksum(adapter
, staterr
,
3704 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3705 skb
->protocol
= eth_type_trans(skb
, netdev
);
3707 if(likely(rx_desc
->wb
.upper
.header_status
&
3708 E1000_RXDPS_HDRSTAT_HDRSP
)) {
3709 adapter
->rx_hdr_split
++;
3710 #ifdef HAVE_RX_ZERO_COPY
3711 skb_shinfo(skb
)->zero_copy
= TRUE
;
3714 #ifdef CONFIG_E1000_NAPI
3715 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3716 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3717 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3718 E1000_RXD_SPC_VLAN_MASK
);
3720 netif_receive_skb(skb
);
3722 #else /* CONFIG_E1000_NAPI */
3723 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3724 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3725 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3726 E1000_RXD_SPC_VLAN_MASK
);
3730 #endif /* CONFIG_E1000_NAPI */
3731 netdev
->last_rx
= jiffies
;
3732 #ifdef CONFIG_E1000_MQ
3733 rx_ring
->rx_stats
.packets
++;
3734 rx_ring
->rx_stats
.bytes
+= length
;
3738 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3739 buffer_info
->skb
= NULL
;
3740 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3742 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3743 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3745 rx_ring
->next_to_clean
= i
;
3746 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3752 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3753 * @adapter: address of board private structure
3757 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3758 struct e1000_rx_ring
*rx_ring
)
3760 struct net_device
*netdev
= adapter
->netdev
;
3761 struct pci_dev
*pdev
= adapter
->pdev
;
3762 struct e1000_rx_desc
*rx_desc
;
3763 struct e1000_buffer
*buffer_info
;
3764 struct sk_buff
*skb
;
3766 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3768 i
= rx_ring
->next_to_use
;
3769 buffer_info
= &rx_ring
->buffer_info
[i
];
3771 while(!buffer_info
->skb
) {
3772 skb
= dev_alloc_skb(bufsz
);
3774 if(unlikely(!skb
)) {
3775 /* Better luck next round */
3779 /* Fix for errata 23, can't cross 64kB boundary */
3780 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3781 struct sk_buff
*oldskb
= skb
;
3782 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3783 "at %p\n", bufsz
, skb
->data
);
3784 /* Try again, without freeing the previous */
3785 skb
= dev_alloc_skb(bufsz
);
3786 /* Failed allocation, critical failure */
3788 dev_kfree_skb(oldskb
);
3792 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3795 dev_kfree_skb(oldskb
);
3796 break; /* while !buffer_info->skb */
3798 /* Use new allocation */
3799 dev_kfree_skb(oldskb
);
3802 /* Make buffer alignment 2 beyond a 16 byte boundary
3803 * this will result in a 16 byte aligned IP header after
3804 * the 14 byte MAC header is removed
3806 skb_reserve(skb
, NET_IP_ALIGN
);
3810 buffer_info
->skb
= skb
;
3811 buffer_info
->length
= adapter
->rx_buffer_len
;
3812 buffer_info
->dma
= pci_map_single(pdev
,
3814 adapter
->rx_buffer_len
,
3815 PCI_DMA_FROMDEVICE
);
3817 /* Fix for errata 23, can't cross 64kB boundary */
3818 if (!e1000_check_64k_bound(adapter
,
3819 (void *)(unsigned long)buffer_info
->dma
,
3820 adapter
->rx_buffer_len
)) {
3821 DPRINTK(RX_ERR
, ERR
,
3822 "dma align check failed: %u bytes at %p\n",
3823 adapter
->rx_buffer_len
,
3824 (void *)(unsigned long)buffer_info
->dma
);
3826 buffer_info
->skb
= NULL
;
3828 pci_unmap_single(pdev
, buffer_info
->dma
,
3829 adapter
->rx_buffer_len
,
3830 PCI_DMA_FROMDEVICE
);
3832 break; /* while !buffer_info->skb */
3834 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3835 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3837 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3838 /* Force memory writes to complete before letting h/w
3839 * know there are new descriptors to fetch. (Only
3840 * applicable for weak-ordered memory model archs,
3841 * such as IA-64). */
3843 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3846 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3847 buffer_info
= &rx_ring
->buffer_info
[i
];
3850 rx_ring
->next_to_use
= i
;
3854 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3855 * @adapter: address of board private structure
3859 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3860 struct e1000_rx_ring
*rx_ring
)
3862 struct net_device
*netdev
= adapter
->netdev
;
3863 struct pci_dev
*pdev
= adapter
->pdev
;
3864 union e1000_rx_desc_packet_split
*rx_desc
;
3865 struct e1000_buffer
*buffer_info
;
3866 struct e1000_ps_page
*ps_page
;
3867 struct e1000_ps_page_dma
*ps_page_dma
;
3868 struct sk_buff
*skb
;
3871 i
= rx_ring
->next_to_use
;
3872 buffer_info
= &rx_ring
->buffer_info
[i
];
3873 ps_page
= &rx_ring
->ps_page
[i
];
3874 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3876 while(!buffer_info
->skb
) {
3877 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3879 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3880 if (j
< adapter
->rx_ps_pages
) {
3881 if (likely(!ps_page
->ps_page
[j
])) {
3882 ps_page
->ps_page
[j
] =
3883 alloc_page(GFP_ATOMIC
);
3884 if (unlikely(!ps_page
->ps_page
[j
]))
3886 ps_page_dma
->ps_page_dma
[j
] =
3888 ps_page
->ps_page
[j
],
3890 PCI_DMA_FROMDEVICE
);
3892 /* Refresh the desc even if buffer_addrs didn't
3893 * change because each write-back erases
3896 rx_desc
->read
.buffer_addr
[j
+1] =
3897 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3899 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3902 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3907 /* Make buffer alignment 2 beyond a 16 byte boundary
3908 * this will result in a 16 byte aligned IP header after
3909 * the 14 byte MAC header is removed
3911 skb_reserve(skb
, NET_IP_ALIGN
);
3915 buffer_info
->skb
= skb
;
3916 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3917 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3918 adapter
->rx_ps_bsize0
,
3919 PCI_DMA_FROMDEVICE
);
3921 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3923 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3924 /* Force memory writes to complete before letting h/w
3925 * know there are new descriptors to fetch. (Only
3926 * applicable for weak-ordered memory model archs,
3927 * such as IA-64). */
3929 /* Hardware increments by 16 bytes, but packet split
3930 * descriptors are 32 bytes...so we increment tail
3933 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3936 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3937 buffer_info
= &rx_ring
->buffer_info
[i
];
3938 ps_page
= &rx_ring
->ps_page
[i
];
3939 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3943 rx_ring
->next_to_use
= i
;
3947 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3952 e1000_smartspeed(struct e1000_adapter
*adapter
)
3954 uint16_t phy_status
;
3957 if((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3958 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3961 if(adapter
->smartspeed
== 0) {
3962 /* If Master/Slave config fault is asserted twice,
3963 * we assume back-to-back */
3964 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3965 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3966 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3967 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3968 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3969 if(phy_ctrl
& CR_1000T_MS_ENABLE
) {
3970 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3971 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3973 adapter
->smartspeed
++;
3974 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3975 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3977 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3978 MII_CR_RESTART_AUTO_NEG
);
3979 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3984 } else if(adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3985 /* If still no link, perhaps using 2/3 pair cable */
3986 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3987 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3988 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3989 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3990 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3991 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3992 MII_CR_RESTART_AUTO_NEG
);
3993 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3996 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3997 if(adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3998 adapter
->smartspeed
= 0;
4009 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4015 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4029 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4031 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4032 struct mii_ioctl_data
*data
= if_mii(ifr
);
4036 unsigned long flags
;
4038 if(adapter
->hw
.media_type
!= e1000_media_type_copper
)
4043 data
->phy_id
= adapter
->hw
.phy_addr
;
4046 if(!capable(CAP_NET_ADMIN
))
4048 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4049 if(e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4051 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4054 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4057 if(!capable(CAP_NET_ADMIN
))
4059 if(data
->reg_num
& ~(0x1F))
4061 mii_reg
= data
->val_in
;
4062 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4063 if(e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4065 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4068 if(adapter
->hw
.phy_type
== e1000_phy_m88
) {
4069 switch (data
->reg_num
) {
4071 if(mii_reg
& MII_CR_POWER_DOWN
)
4073 if(mii_reg
& MII_CR_AUTO_NEG_EN
) {
4074 adapter
->hw
.autoneg
= 1;
4075 adapter
->hw
.autoneg_advertised
= 0x2F;
4078 spddplx
= SPEED_1000
;
4079 else if (mii_reg
& 0x2000)
4080 spddplx
= SPEED_100
;
4083 spddplx
+= (mii_reg
& 0x100)
4086 retval
= e1000_set_spd_dplx(adapter
,
4089 spin_unlock_irqrestore(
4090 &adapter
->stats_lock
,
4095 if(netif_running(adapter
->netdev
)) {
4096 e1000_down(adapter
);
4099 e1000_reset(adapter
);
4101 case M88E1000_PHY_SPEC_CTRL
:
4102 case M88E1000_EXT_PHY_SPEC_CTRL
:
4103 if(e1000_phy_reset(&adapter
->hw
)) {
4104 spin_unlock_irqrestore(
4105 &adapter
->stats_lock
, flags
);
4111 switch (data
->reg_num
) {
4113 if(mii_reg
& MII_CR_POWER_DOWN
)
4115 if(netif_running(adapter
->netdev
)) {
4116 e1000_down(adapter
);
4119 e1000_reset(adapter
);
4123 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4128 return E1000_SUCCESS
;
4132 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4134 struct e1000_adapter
*adapter
= hw
->back
;
4135 int ret_val
= pci_set_mwi(adapter
->pdev
);
4138 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4142 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4144 struct e1000_adapter
*adapter
= hw
->back
;
4146 pci_clear_mwi(adapter
->pdev
);
4150 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4152 struct e1000_adapter
*adapter
= hw
->back
;
4154 pci_read_config_word(adapter
->pdev
, reg
, value
);
4158 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4160 struct e1000_adapter
*adapter
= hw
->back
;
4162 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4166 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4172 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4178 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4180 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4181 uint32_t ctrl
, rctl
;
4183 e1000_irq_disable(adapter
);
4184 adapter
->vlgrp
= grp
;
4187 /* enable VLAN tag insert/strip */
4188 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4189 ctrl
|= E1000_CTRL_VME
;
4190 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4192 /* enable VLAN receive filtering */
4193 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4194 rctl
|= E1000_RCTL_VFE
;
4195 rctl
&= ~E1000_RCTL_CFIEN
;
4196 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4197 e1000_update_mng_vlan(adapter
);
4199 /* disable VLAN tag insert/strip */
4200 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4201 ctrl
&= ~E1000_CTRL_VME
;
4202 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4204 /* disable VLAN filtering */
4205 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4206 rctl
&= ~E1000_RCTL_VFE
;
4207 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4208 if(adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4209 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4210 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4214 e1000_irq_enable(adapter
);
4218 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4220 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4221 uint32_t vfta
, index
;
4222 if((adapter
->hw
.mng_cookie
.status
&
4223 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4224 (vid
== adapter
->mng_vlan_id
))
4226 /* add VID to filter table */
4227 index
= (vid
>> 5) & 0x7F;
4228 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4229 vfta
|= (1 << (vid
& 0x1F));
4230 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4234 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4236 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4237 uint32_t vfta
, index
;
4239 e1000_irq_disable(adapter
);
4242 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4244 e1000_irq_enable(adapter
);
4246 if((adapter
->hw
.mng_cookie
.status
&
4247 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4248 (vid
== adapter
->mng_vlan_id
))
4250 /* remove VID from filter table */
4251 index
= (vid
>> 5) & 0x7F;
4252 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4253 vfta
&= ~(1 << (vid
& 0x1F));
4254 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4258 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4260 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4262 if(adapter
->vlgrp
) {
4264 for(vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4265 if(!adapter
->vlgrp
->vlan_devices
[vid
])
4267 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4273 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4275 adapter
->hw
.autoneg
= 0;
4277 /* Fiber NICs only allow 1000 gbps Full duplex */
4278 if((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4279 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4280 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4285 case SPEED_10
+ DUPLEX_HALF
:
4286 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4288 case SPEED_10
+ DUPLEX_FULL
:
4289 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4291 case SPEED_100
+ DUPLEX_HALF
:
4292 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4294 case SPEED_100
+ DUPLEX_FULL
:
4295 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4297 case SPEED_1000
+ DUPLEX_FULL
:
4298 adapter
->hw
.autoneg
= 1;
4299 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4301 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4303 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4311 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4313 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4314 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4315 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4316 uint32_t wufc
= adapter
->wol
;
4318 netif_device_detach(netdev
);
4320 if(netif_running(netdev
))
4321 e1000_down(adapter
);
4323 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4324 if(status
& E1000_STATUS_LU
)
4325 wufc
&= ~E1000_WUFC_LNKC
;
4328 e1000_setup_rctl(adapter
);
4329 e1000_set_multi(netdev
);
4331 /* turn on all-multi mode if wake on multicast is enabled */
4332 if(adapter
->wol
& E1000_WUFC_MC
) {
4333 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4334 rctl
|= E1000_RCTL_MPE
;
4335 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4338 if(adapter
->hw
.mac_type
>= e1000_82540
) {
4339 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4340 /* advertise wake from D3Cold */
4341 #define E1000_CTRL_ADVD3WUC 0x00100000
4342 /* phy power management enable */
4343 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4344 ctrl
|= E1000_CTRL_ADVD3WUC
|
4345 E1000_CTRL_EN_PHY_PWR_MGMT
;
4346 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4349 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
4350 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4351 /* keep the laser running in D3 */
4352 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4353 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4354 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4357 /* Allow time for pending master requests to run */
4358 e1000_disable_pciex_master(&adapter
->hw
);
4360 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4361 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4362 pci_enable_wake(pdev
, 3, 1);
4363 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4365 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4366 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4367 pci_enable_wake(pdev
, 3, 0);
4368 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4371 pci_save_state(pdev
);
4373 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4374 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4375 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4376 if(manc
& E1000_MANC_SMBUS_EN
) {
4377 manc
|= E1000_MANC_ARP_EN
;
4378 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4379 pci_enable_wake(pdev
, 3, 1);
4380 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4384 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4385 * would have already happened in close and is redundant. */
4386 e1000_release_hw_control(adapter
);
4388 pci_disable_device(pdev
);
4389 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4395 e1000_resume(struct pci_dev
*pdev
)
4397 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4398 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4399 uint32_t manc
, ret_val
;
4401 pci_set_power_state(pdev
, PCI_D0
);
4402 pci_restore_state(pdev
);
4403 ret_val
= pci_enable_device(pdev
);
4404 pci_set_master(pdev
);
4406 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4407 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4409 e1000_reset(adapter
);
4410 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4412 if(netif_running(netdev
))
4415 netif_device_attach(netdev
);
4417 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4418 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4419 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4420 manc
&= ~(E1000_MANC_ARP_EN
);
4421 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4424 /* If the controller is 82573 and f/w is AMT, do not set
4425 * DRV_LOAD until the interface is up. For all other cases,
4426 * let the f/w know that the h/w is now under the control
4428 if (adapter
->hw
.mac_type
!= e1000_82573
||
4429 !e1000_check_mng_mode(&adapter
->hw
))
4430 e1000_get_hw_control(adapter
);
4435 #ifdef CONFIG_NET_POLL_CONTROLLER
4437 * Polling 'interrupt' - used by things like netconsole to send skbs
4438 * without having to re-enable interrupts. It's not called while
4439 * the interrupt routine is executing.
4442 e1000_netpoll(struct net_device
*netdev
)
4444 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4445 disable_irq(adapter
->pdev
->irq
);
4446 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4447 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4448 enable_irq(adapter
->pdev
->irq
);