1 /*******************************************************************************
4 Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
26 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *******************************************************************************/
32 char e1000_driver_name
[] = "e1000";
33 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
34 #ifndef CONFIG_E1000_NAPI
37 #define DRIVERNAPI "-NAPI"
39 #define DRV_VERSION "7.0.38-k4"DRIVERNAPI
40 char e1000_driver_version
[] = DRV_VERSION
;
41 static char e1000_copyright
[] = "Copyright (c) 1999-2006 Intel Corporation.";
43 /* e1000_pci_tbl - PCI Device ID Table
45 * Last entry must be all 0s
48 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
50 static struct pci_device_id e1000_pci_tbl
[] = {
51 INTEL_E1000_ETHERNET_DEVICE(0x1000),
52 INTEL_E1000_ETHERNET_DEVICE(0x1001),
53 INTEL_E1000_ETHERNET_DEVICE(0x1004),
54 INTEL_E1000_ETHERNET_DEVICE(0x1008),
55 INTEL_E1000_ETHERNET_DEVICE(0x1009),
56 INTEL_E1000_ETHERNET_DEVICE(0x100C),
57 INTEL_E1000_ETHERNET_DEVICE(0x100D),
58 INTEL_E1000_ETHERNET_DEVICE(0x100E),
59 INTEL_E1000_ETHERNET_DEVICE(0x100F),
60 INTEL_E1000_ETHERNET_DEVICE(0x1010),
61 INTEL_E1000_ETHERNET_DEVICE(0x1011),
62 INTEL_E1000_ETHERNET_DEVICE(0x1012),
63 INTEL_E1000_ETHERNET_DEVICE(0x1013),
64 INTEL_E1000_ETHERNET_DEVICE(0x1014),
65 INTEL_E1000_ETHERNET_DEVICE(0x1015),
66 INTEL_E1000_ETHERNET_DEVICE(0x1016),
67 INTEL_E1000_ETHERNET_DEVICE(0x1017),
68 INTEL_E1000_ETHERNET_DEVICE(0x1018),
69 INTEL_E1000_ETHERNET_DEVICE(0x1019),
70 INTEL_E1000_ETHERNET_DEVICE(0x101A),
71 INTEL_E1000_ETHERNET_DEVICE(0x101D),
72 INTEL_E1000_ETHERNET_DEVICE(0x101E),
73 INTEL_E1000_ETHERNET_DEVICE(0x1026),
74 INTEL_E1000_ETHERNET_DEVICE(0x1027),
75 INTEL_E1000_ETHERNET_DEVICE(0x1028),
76 INTEL_E1000_ETHERNET_DEVICE(0x105E),
77 INTEL_E1000_ETHERNET_DEVICE(0x105F),
78 INTEL_E1000_ETHERNET_DEVICE(0x1060),
79 INTEL_E1000_ETHERNET_DEVICE(0x1075),
80 INTEL_E1000_ETHERNET_DEVICE(0x1076),
81 INTEL_E1000_ETHERNET_DEVICE(0x1077),
82 INTEL_E1000_ETHERNET_DEVICE(0x1078),
83 INTEL_E1000_ETHERNET_DEVICE(0x1079),
84 INTEL_E1000_ETHERNET_DEVICE(0x107A),
85 INTEL_E1000_ETHERNET_DEVICE(0x107B),
86 INTEL_E1000_ETHERNET_DEVICE(0x107C),
87 INTEL_E1000_ETHERNET_DEVICE(0x107D),
88 INTEL_E1000_ETHERNET_DEVICE(0x107E),
89 INTEL_E1000_ETHERNET_DEVICE(0x107F),
90 INTEL_E1000_ETHERNET_DEVICE(0x108A),
91 INTEL_E1000_ETHERNET_DEVICE(0x108B),
92 INTEL_E1000_ETHERNET_DEVICE(0x108C),
93 INTEL_E1000_ETHERNET_DEVICE(0x1096),
94 INTEL_E1000_ETHERNET_DEVICE(0x1098),
95 INTEL_E1000_ETHERNET_DEVICE(0x1099),
96 INTEL_E1000_ETHERNET_DEVICE(0x109A),
97 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
98 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
99 /* required last entry */
103 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
105 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
106 struct e1000_tx_ring
*txdr
);
107 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
108 struct e1000_rx_ring
*rxdr
);
109 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
110 struct e1000_tx_ring
*tx_ring
);
111 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
112 struct e1000_rx_ring
*rx_ring
);
114 /* Local Function Prototypes */
116 static int e1000_init_module(void);
117 static void e1000_exit_module(void);
118 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
119 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
120 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
121 static int e1000_sw_init(struct e1000_adapter
*adapter
);
122 static int e1000_open(struct net_device
*netdev
);
123 static int e1000_close(struct net_device
*netdev
);
124 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
125 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
126 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
127 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
128 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
129 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
130 struct e1000_tx_ring
*tx_ring
);
131 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
132 struct e1000_rx_ring
*rx_ring
);
133 static void e1000_set_multi(struct net_device
*netdev
);
134 static void e1000_update_phy_info(unsigned long data
);
135 static void e1000_watchdog(unsigned long data
);
136 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
137 static void e1000_82547_tx_fifo_stall(unsigned long data
);
138 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
139 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
140 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
141 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
142 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
143 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
144 struct e1000_tx_ring
*tx_ring
);
145 #ifdef CONFIG_E1000_NAPI
146 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
147 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
148 struct e1000_rx_ring
*rx_ring
,
149 int *work_done
, int work_to_do
);
150 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
151 struct e1000_rx_ring
*rx_ring
,
152 int *work_done
, int work_to_do
);
154 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
155 struct e1000_rx_ring
*rx_ring
);
156 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
157 struct e1000_rx_ring
*rx_ring
);
159 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
160 struct e1000_rx_ring
*rx_ring
,
162 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
163 struct e1000_rx_ring
*rx_ring
,
165 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
166 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
168 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
169 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
170 static void e1000_tx_timeout(struct net_device
*dev
);
171 static void e1000_reset_task(struct net_device
*dev
);
172 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
173 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
174 struct sk_buff
*skb
);
176 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
177 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
178 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
179 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
182 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
183 static int e1000_resume(struct pci_dev
*pdev
);
185 static void e1000_shutdown(struct pci_dev
*pdev
);
187 #ifdef CONFIG_NET_POLL_CONTROLLER
188 /* for netdump / net console */
189 static void e1000_netpoll (struct net_device
*netdev
);
193 static struct pci_driver e1000_driver
= {
194 .name
= e1000_driver_name
,
195 .id_table
= e1000_pci_tbl
,
196 .probe
= e1000_probe
,
197 .remove
= __devexit_p(e1000_remove
),
198 /* Power Managment Hooks */
200 .suspend
= e1000_suspend
,
201 .resume
= e1000_resume
,
203 .shutdown
= e1000_shutdown
206 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
207 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
208 MODULE_LICENSE("GPL");
209 MODULE_VERSION(DRV_VERSION
);
211 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
212 module_param(debug
, int, 0);
213 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
216 * e1000_init_module - Driver Registration Routine
218 * e1000_init_module is the first routine called when the driver is
219 * loaded. All it does is register with the PCI subsystem.
223 e1000_init_module(void)
226 printk(KERN_INFO
"%s - version %s\n",
227 e1000_driver_string
, e1000_driver_version
);
229 printk(KERN_INFO
"%s\n", e1000_copyright
);
231 ret
= pci_module_init(&e1000_driver
);
236 module_init(e1000_init_module
);
239 * e1000_exit_module - Driver Exit Cleanup Routine
241 * e1000_exit_module is called just before the driver is removed
246 e1000_exit_module(void)
248 pci_unregister_driver(&e1000_driver
);
251 module_exit(e1000_exit_module
);
254 * e1000_irq_disable - Mask off interrupt generation on the NIC
255 * @adapter: board private structure
259 e1000_irq_disable(struct e1000_adapter
*adapter
)
261 atomic_inc(&adapter
->irq_sem
);
262 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
263 E1000_WRITE_FLUSH(&adapter
->hw
);
264 synchronize_irq(adapter
->pdev
->irq
);
268 * e1000_irq_enable - Enable default interrupt generation settings
269 * @adapter: board private structure
273 e1000_irq_enable(struct e1000_adapter
*adapter
)
275 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
276 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
277 E1000_WRITE_FLUSH(&adapter
->hw
);
282 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
284 struct net_device
*netdev
= adapter
->netdev
;
285 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
286 uint16_t old_vid
= adapter
->mng_vlan_id
;
287 if (adapter
->vlgrp
) {
288 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
289 if (adapter
->hw
.mng_cookie
.status
&
290 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
291 e1000_vlan_rx_add_vid(netdev
, vid
);
292 adapter
->mng_vlan_id
= vid
;
294 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
296 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
298 !adapter
->vlgrp
->vlan_devices
[old_vid
])
299 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
301 adapter
->mng_vlan_id
= vid
;
306 * e1000_release_hw_control - release control of the h/w to f/w
307 * @adapter: address of board private structure
309 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
310 * For ASF and Pass Through versions of f/w this means that the
311 * driver is no longer loaded. For AMT version (only with 82573) i
312 * of the f/w this means that the netowrk i/f is closed.
317 e1000_release_hw_control(struct e1000_adapter
*adapter
)
322 /* Let firmware taken over control of h/w */
323 switch (adapter
->hw
.mac_type
) {
326 case e1000_80003es2lan
:
327 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
328 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
329 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
332 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
333 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
334 swsm
& ~E1000_SWSM_DRV_LOAD
);
341 * e1000_get_hw_control - get control of the h/w from f/w
342 * @adapter: address of board private structure
344 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
345 * For ASF and Pass Through versions of f/w this means that
346 * the driver is loaded. For AMT version (only with 82573)
347 * of the f/w this means that the netowrk i/f is open.
352 e1000_get_hw_control(struct e1000_adapter
*adapter
)
356 /* Let firmware know the driver has taken over */
357 switch (adapter
->hw
.mac_type
) {
360 case e1000_80003es2lan
:
361 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
362 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
363 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
366 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
367 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
368 swsm
| E1000_SWSM_DRV_LOAD
);
376 e1000_up(struct e1000_adapter
*adapter
)
378 struct net_device
*netdev
= adapter
->netdev
;
381 /* hardware has been reset, we need to reload some things */
383 /* Reset the PHY if it was previously powered down */
384 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
386 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
387 if (mii_reg
& MII_CR_POWER_DOWN
)
388 e1000_phy_hw_reset(&adapter
->hw
);
391 e1000_set_multi(netdev
);
393 e1000_restore_vlan(adapter
);
395 e1000_configure_tx(adapter
);
396 e1000_setup_rctl(adapter
);
397 e1000_configure_rx(adapter
);
398 /* call E1000_DESC_UNUSED which always leaves
399 * at least 1 descriptor unused to make sure
400 * next_to_use != next_to_clean */
401 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
402 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
403 adapter
->alloc_rx_buf(adapter
, ring
,
404 E1000_DESC_UNUSED(ring
));
407 #ifdef CONFIG_PCI_MSI
408 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
409 adapter
->have_msi
= TRUE
;
410 if ((err
= pci_enable_msi(adapter
->pdev
))) {
412 "Unable to allocate MSI interrupt Error: %d\n", err
);
413 adapter
->have_msi
= FALSE
;
417 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
418 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
419 netdev
->name
, netdev
))) {
421 "Unable to allocate interrupt Error: %d\n", err
);
425 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
427 mod_timer(&adapter
->watchdog_timer
, jiffies
);
429 #ifdef CONFIG_E1000_NAPI
430 netif_poll_enable(netdev
);
432 e1000_irq_enable(adapter
);
438 e1000_down(struct e1000_adapter
*adapter
)
440 struct net_device
*netdev
= adapter
->netdev
;
441 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
442 e1000_check_mng_mode(&adapter
->hw
);
444 e1000_irq_disable(adapter
);
446 free_irq(adapter
->pdev
->irq
, netdev
);
447 #ifdef CONFIG_PCI_MSI
448 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
449 adapter
->have_msi
== TRUE
)
450 pci_disable_msi(adapter
->pdev
);
452 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
453 del_timer_sync(&adapter
->watchdog_timer
);
454 del_timer_sync(&adapter
->phy_info_timer
);
456 #ifdef CONFIG_E1000_NAPI
457 netif_poll_disable(netdev
);
459 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
460 adapter
->link_speed
= 0;
461 adapter
->link_duplex
= 0;
462 netif_carrier_off(netdev
);
463 netif_stop_queue(netdev
);
465 e1000_reset(adapter
);
466 e1000_clean_all_tx_rings(adapter
);
467 e1000_clean_all_rx_rings(adapter
);
469 /* Power down the PHY so no link is implied when interface is down *
470 * The PHY cannot be powered down if any of the following is TRUE *
473 * (c) SoL/IDER session is active */
474 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
475 adapter
->hw
.media_type
== e1000_media_type_copper
&&
476 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
478 !e1000_check_phy_reset_block(&adapter
->hw
)) {
480 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
481 mii_reg
|= MII_CR_POWER_DOWN
;
482 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
488 e1000_reset(struct e1000_adapter
*adapter
)
491 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
493 /* Repartition Pba for greater than 9k mtu
494 * To take effect CTRL.RST is required.
497 switch (adapter
->hw
.mac_type
) {
499 case e1000_82547_rev_2
:
504 case e1000_80003es2lan
:
515 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
516 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
517 pba
-= 8; /* allocate more FIFO for Tx */
520 if (adapter
->hw
.mac_type
== e1000_82547
) {
521 adapter
->tx_fifo_head
= 0;
522 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
523 adapter
->tx_fifo_size
=
524 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
525 atomic_set(&adapter
->tx_fifo_stall
, 0);
528 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
530 /* flow control settings */
531 /* Set the FC high water mark to 90% of the FIFO size.
532 * Required to clear last 3 LSB */
533 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
535 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
536 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
537 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
538 adapter
->hw
.fc_pause_time
= 0xFFFF;
540 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
541 adapter
->hw
.fc_send_xon
= 1;
542 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
544 /* Allow time for pending master requests to run */
545 e1000_reset_hw(&adapter
->hw
);
546 if (adapter
->hw
.mac_type
>= e1000_82544
)
547 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
548 if (e1000_init_hw(&adapter
->hw
))
549 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
550 e1000_update_mng_vlan(adapter
);
551 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
552 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
554 e1000_reset_adaptive(&adapter
->hw
);
555 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
556 if (adapter
->en_mng_pt
) {
557 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
558 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
559 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
564 * e1000_probe - Device Initialization Routine
565 * @pdev: PCI device information struct
566 * @ent: entry in e1000_pci_tbl
568 * Returns 0 on success, negative on failure
570 * e1000_probe initializes an adapter identified by a pci_dev structure.
571 * The OS initialization, configuring of the adapter private structure,
572 * and a hardware reset occur.
576 e1000_probe(struct pci_dev
*pdev
,
577 const struct pci_device_id
*ent
)
579 struct net_device
*netdev
;
580 struct e1000_adapter
*adapter
;
581 unsigned long mmio_start
, mmio_len
;
583 static int cards_found
= 0;
584 static int e1000_ksp3_port_a
= 0; /* global ksp3 port a indication */
585 int i
, err
, pci_using_dac
;
586 uint16_t eeprom_data
;
587 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
588 if ((err
= pci_enable_device(pdev
)))
591 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
594 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
595 E1000_ERR("No usable DMA configuration, aborting\n");
601 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
604 pci_set_master(pdev
);
606 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
609 goto err_alloc_etherdev
;
612 SET_MODULE_OWNER(netdev
);
613 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
615 pci_set_drvdata(pdev
, netdev
);
616 adapter
= netdev_priv(netdev
);
617 adapter
->netdev
= netdev
;
618 adapter
->pdev
= pdev
;
619 adapter
->hw
.back
= adapter
;
620 adapter
->msg_enable
= (1 << debug
) - 1;
622 mmio_start
= pci_resource_start(pdev
, BAR_0
);
623 mmio_len
= pci_resource_len(pdev
, BAR_0
);
625 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
626 if (!adapter
->hw
.hw_addr
) {
631 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
632 if (pci_resource_len(pdev
, i
) == 0)
634 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
635 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
640 netdev
->open
= &e1000_open
;
641 netdev
->stop
= &e1000_close
;
642 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
643 netdev
->get_stats
= &e1000_get_stats
;
644 netdev
->set_multicast_list
= &e1000_set_multi
;
645 netdev
->set_mac_address
= &e1000_set_mac
;
646 netdev
->change_mtu
= &e1000_change_mtu
;
647 netdev
->do_ioctl
= &e1000_ioctl
;
648 e1000_set_ethtool_ops(netdev
);
649 netdev
->tx_timeout
= &e1000_tx_timeout
;
650 netdev
->watchdog_timeo
= 5 * HZ
;
651 #ifdef CONFIG_E1000_NAPI
652 netdev
->poll
= &e1000_clean
;
655 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
656 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
657 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
658 #ifdef CONFIG_NET_POLL_CONTROLLER
659 netdev
->poll_controller
= e1000_netpoll
;
661 strcpy(netdev
->name
, pci_name(pdev
));
663 netdev
->mem_start
= mmio_start
;
664 netdev
->mem_end
= mmio_start
+ mmio_len
;
665 netdev
->base_addr
= adapter
->hw
.io_base
;
667 adapter
->bd_number
= cards_found
;
669 /* setup the private structure */
671 if ((err
= e1000_sw_init(adapter
)))
674 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
675 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
677 /* if ksp3, indicate if it's port a being setup */
678 if (pdev
->device
== E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
&&
679 e1000_ksp3_port_a
== 0)
680 adapter
->ksp3_port_a
= 1;
682 /* Reset for multiple KP3 adapters */
683 if (e1000_ksp3_port_a
== 4)
684 e1000_ksp3_port_a
= 0;
686 if (adapter
->hw
.mac_type
>= e1000_82543
) {
687 netdev
->features
= NETIF_F_SG
|
691 NETIF_F_HW_VLAN_FILTER
;
695 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
696 (adapter
->hw
.mac_type
!= e1000_82547
))
697 netdev
->features
|= NETIF_F_TSO
;
699 #ifdef NETIF_F_TSO_IPV6
700 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
701 netdev
->features
|= NETIF_F_TSO_IPV6
;
705 netdev
->features
|= NETIF_F_HIGHDMA
;
707 /* hard_start_xmit is safe against parallel locking */
708 netdev
->features
|= NETIF_F_LLTX
;
710 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
712 /* before reading the EEPROM, reset the controller to
713 * put the device in a known good starting state */
715 e1000_reset_hw(&adapter
->hw
);
717 /* make sure the EEPROM is good */
719 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
720 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
725 /* copy the MAC address out of the EEPROM */
727 if (e1000_read_mac_addr(&adapter
->hw
))
728 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
729 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
730 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
732 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
733 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
738 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
740 e1000_get_bus_info(&adapter
->hw
);
742 init_timer(&adapter
->tx_fifo_stall_timer
);
743 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
744 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
746 init_timer(&adapter
->watchdog_timer
);
747 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
748 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
750 INIT_WORK(&adapter
->watchdog_task
,
751 (void (*)(void *))e1000_watchdog_task
, adapter
);
753 init_timer(&adapter
->phy_info_timer
);
754 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
755 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
757 INIT_WORK(&adapter
->reset_task
,
758 (void (*)(void *))e1000_reset_task
, netdev
);
760 /* we're going to reset, so assume we have no link for now */
762 netif_carrier_off(netdev
);
763 netif_stop_queue(netdev
);
765 e1000_check_options(adapter
);
767 /* Initial Wake on LAN setting
768 * If APM wake is enabled in the EEPROM,
769 * enable the ACPI Magic Packet filter
772 switch (adapter
->hw
.mac_type
) {
773 case e1000_82542_rev2_0
:
774 case e1000_82542_rev2_1
:
778 e1000_read_eeprom(&adapter
->hw
,
779 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
780 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
783 case e1000_82546_rev_3
:
785 case e1000_80003es2lan
:
786 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
787 e1000_read_eeprom(&adapter
->hw
,
788 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
793 e1000_read_eeprom(&adapter
->hw
,
794 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
797 if (eeprom_data
& eeprom_apme_mask
)
798 adapter
->wol
|= E1000_WUFC_MAG
;
800 /* print bus type/speed/width info */
802 struct e1000_hw
*hw
= &adapter
->hw
;
803 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
804 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
805 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
806 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
807 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
808 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
809 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
810 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
811 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
812 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
813 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
817 for (i
= 0; i
< 6; i
++)
818 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
820 /* reset the hardware with the new settings */
821 e1000_reset(adapter
);
823 /* If the controller is 82573 and f/w is AMT, do not set
824 * DRV_LOAD until the interface is up. For all other cases,
825 * let the f/w know that the h/w is now under the control
827 if (adapter
->hw
.mac_type
!= e1000_82573
||
828 !e1000_check_mng_mode(&adapter
->hw
))
829 e1000_get_hw_control(adapter
);
831 strcpy(netdev
->name
, "eth%d");
832 if ((err
= register_netdev(netdev
)))
835 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
843 iounmap(adapter
->hw
.hw_addr
);
847 pci_release_regions(pdev
);
852 * e1000_remove - Device Removal Routine
853 * @pdev: PCI device information struct
855 * e1000_remove is called by the PCI subsystem to alert the driver
856 * that it should release a PCI device. The could be caused by a
857 * Hot-Plug event, or because the driver is going to be removed from
861 static void __devexit
862 e1000_remove(struct pci_dev
*pdev
)
864 struct net_device
*netdev
= pci_get_drvdata(pdev
);
865 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
867 #ifdef CONFIG_E1000_NAPI
871 flush_scheduled_work();
873 if (adapter
->hw
.mac_type
>= e1000_82540
&&
874 adapter
->hw
.media_type
== e1000_media_type_copper
) {
875 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
876 if (manc
& E1000_MANC_SMBUS_EN
) {
877 manc
|= E1000_MANC_ARP_EN
;
878 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
882 /* Release control of h/w to f/w. If f/w is AMT enabled, this
883 * would have already happened in close and is redundant. */
884 e1000_release_hw_control(adapter
);
886 unregister_netdev(netdev
);
887 #ifdef CONFIG_E1000_NAPI
888 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
889 dev_put(&adapter
->polling_netdev
[i
]);
892 if (!e1000_check_phy_reset_block(&adapter
->hw
))
893 e1000_phy_hw_reset(&adapter
->hw
);
895 kfree(adapter
->tx_ring
);
896 kfree(adapter
->rx_ring
);
897 #ifdef CONFIG_E1000_NAPI
898 kfree(adapter
->polling_netdev
);
901 iounmap(adapter
->hw
.hw_addr
);
902 pci_release_regions(pdev
);
906 pci_disable_device(pdev
);
910 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
911 * @adapter: board private structure to initialize
913 * e1000_sw_init initializes the Adapter private data structure.
914 * Fields are initialized based on PCI device information and
915 * OS network device settings (MTU size).
919 e1000_sw_init(struct e1000_adapter
*adapter
)
921 struct e1000_hw
*hw
= &adapter
->hw
;
922 struct net_device
*netdev
= adapter
->netdev
;
923 struct pci_dev
*pdev
= adapter
->pdev
;
924 #ifdef CONFIG_E1000_NAPI
928 /* PCI config space info */
930 hw
->vendor_id
= pdev
->vendor
;
931 hw
->device_id
= pdev
->device
;
932 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
933 hw
->subsystem_id
= pdev
->subsystem_device
;
935 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
937 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
939 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_FRAME_SIZE
;
940 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
941 hw
->max_frame_size
= netdev
->mtu
+
942 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
943 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
945 /* identify the MAC */
947 if (e1000_set_mac_type(hw
)) {
948 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
952 /* initialize eeprom parameters */
954 if (e1000_init_eeprom_params(hw
)) {
955 E1000_ERR("EEPROM initialization failed\n");
959 switch (hw
->mac_type
) {
964 case e1000_82541_rev_2
:
965 case e1000_82547_rev_2
:
966 hw
->phy_init_script
= 1;
970 e1000_set_media_type(hw
);
972 hw
->wait_autoneg_complete
= FALSE
;
973 hw
->tbi_compatibility_en
= TRUE
;
974 hw
->adaptive_ifs
= TRUE
;
978 if (hw
->media_type
== e1000_media_type_copper
) {
979 hw
->mdix
= AUTO_ALL_MODES
;
980 hw
->disable_polarity_correction
= FALSE
;
981 hw
->master_slave
= E1000_MASTER_SLAVE
;
984 adapter
->num_tx_queues
= 1;
985 adapter
->num_rx_queues
= 1;
987 if (e1000_alloc_queues(adapter
)) {
988 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
992 #ifdef CONFIG_E1000_NAPI
993 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
994 adapter
->polling_netdev
[i
].priv
= adapter
;
995 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
996 adapter
->polling_netdev
[i
].weight
= 64;
997 dev_hold(&adapter
->polling_netdev
[i
]);
998 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1000 spin_lock_init(&adapter
->tx_queue_lock
);
1003 atomic_set(&adapter
->irq_sem
, 1);
1004 spin_lock_init(&adapter
->stats_lock
);
1010 * e1000_alloc_queues - Allocate memory for all rings
1011 * @adapter: board private structure to initialize
1013 * We allocate one ring per queue at run-time since we don't know the
1014 * number of queues at compile-time. The polling_netdev array is
1015 * intended for Multiqueue, but should work fine with a single queue.
1018 static int __devinit
1019 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1023 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1024 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1025 if (!adapter
->tx_ring
)
1027 memset(adapter
->tx_ring
, 0, size
);
1029 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1030 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1031 if (!adapter
->rx_ring
) {
1032 kfree(adapter
->tx_ring
);
1035 memset(adapter
->rx_ring
, 0, size
);
1037 #ifdef CONFIG_E1000_NAPI
1038 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1039 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1040 if (!adapter
->polling_netdev
) {
1041 kfree(adapter
->tx_ring
);
1042 kfree(adapter
->rx_ring
);
1045 memset(adapter
->polling_netdev
, 0, size
);
1048 return E1000_SUCCESS
;
1052 * e1000_open - Called when a network interface is made active
1053 * @netdev: network interface device structure
1055 * Returns 0 on success, negative value on failure
1057 * The open entry point is called when a network interface is made
1058 * active by the system (IFF_UP). At this point all resources needed
1059 * for transmit and receive operations are allocated, the interrupt
1060 * handler is registered with the OS, the watchdog timer is started,
1061 * and the stack is notified that the interface is ready.
1065 e1000_open(struct net_device
*netdev
)
1067 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1070 /* allocate transmit descriptors */
1072 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1075 /* allocate receive descriptors */
1077 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1080 if ((err
= e1000_up(adapter
)))
1082 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1083 if ((adapter
->hw
.mng_cookie
.status
&
1084 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1085 e1000_update_mng_vlan(adapter
);
1088 /* If AMT is enabled, let the firmware know that the network
1089 * interface is now open */
1090 if (adapter
->hw
.mac_type
== e1000_82573
&&
1091 e1000_check_mng_mode(&adapter
->hw
))
1092 e1000_get_hw_control(adapter
);
1094 return E1000_SUCCESS
;
1097 e1000_free_all_rx_resources(adapter
);
1099 e1000_free_all_tx_resources(adapter
);
1101 e1000_reset(adapter
);
1107 * e1000_close - Disables a network interface
1108 * @netdev: network interface device structure
1110 * Returns 0, this is not allowed to fail
1112 * The close entry point is called when an interface is de-activated
1113 * by the OS. The hardware is still under the drivers control, but
1114 * needs to be disabled. A global MAC reset is issued to stop the
1115 * hardware, and all transmit and receive resources are freed.
1119 e1000_close(struct net_device
*netdev
)
1121 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1123 e1000_down(adapter
);
1125 e1000_free_all_tx_resources(adapter
);
1126 e1000_free_all_rx_resources(adapter
);
1128 if ((adapter
->hw
.mng_cookie
.status
&
1129 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1130 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1133 /* If AMT is enabled, let the firmware know that the network
1134 * interface is now closed */
1135 if (adapter
->hw
.mac_type
== e1000_82573
&&
1136 e1000_check_mng_mode(&adapter
->hw
))
1137 e1000_release_hw_control(adapter
);
1143 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1144 * @adapter: address of board private structure
1145 * @start: address of beginning of memory
1146 * @len: length of memory
1149 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1150 void *start
, unsigned long len
)
1152 unsigned long begin
= (unsigned long) start
;
1153 unsigned long end
= begin
+ len
;
1155 /* First rev 82545 and 82546 need to not allow any memory
1156 * write location to cross 64k boundary due to errata 23 */
1157 if (adapter
->hw
.mac_type
== e1000_82545
||
1158 adapter
->hw
.mac_type
== e1000_82546
) {
1159 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1166 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1167 * @adapter: board private structure
1168 * @txdr: tx descriptor ring (for a specific queue) to setup
1170 * Return 0 on success, negative on failure
1174 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1175 struct e1000_tx_ring
*txdr
)
1177 struct pci_dev
*pdev
= adapter
->pdev
;
1180 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1182 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1183 if (!txdr
->buffer_info
) {
1185 "Unable to allocate memory for the transmit descriptor ring\n");
1188 memset(txdr
->buffer_info
, 0, size
);
1190 /* round up to nearest 4K */
1192 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1193 E1000_ROUNDUP(txdr
->size
, 4096);
1195 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1198 vfree(txdr
->buffer_info
);
1200 "Unable to allocate memory for the transmit descriptor ring\n");
1204 /* Fix for errata 23, can't cross 64kB boundary */
1205 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1206 void *olddesc
= txdr
->desc
;
1207 dma_addr_t olddma
= txdr
->dma
;
1208 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1209 "at %p\n", txdr
->size
, txdr
->desc
);
1210 /* Try again, without freeing the previous */
1211 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1212 /* Failed allocation, critical failure */
1214 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1215 goto setup_tx_desc_die
;
1218 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1220 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1222 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1224 "Unable to allocate aligned memory "
1225 "for the transmit descriptor ring\n");
1226 vfree(txdr
->buffer_info
);
1229 /* Free old allocation, new allocation was successful */
1230 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1233 memset(txdr
->desc
, 0, txdr
->size
);
1235 txdr
->next_to_use
= 0;
1236 txdr
->next_to_clean
= 0;
1237 spin_lock_init(&txdr
->tx_lock
);
1243 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1244 * (Descriptors) for all queues
1245 * @adapter: board private structure
1247 * If this function returns with an error, then it's possible one or
1248 * more of the rings is populated (while the rest are not). It is the
1249 * callers duty to clean those orphaned rings.
1251 * Return 0 on success, negative on failure
1255 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1259 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1260 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1263 "Allocation for Tx Queue %u failed\n", i
);
1272 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1273 * @adapter: board private structure
1275 * Configure the Tx unit of the MAC after a reset.
1279 e1000_configure_tx(struct e1000_adapter
*adapter
)
1282 struct e1000_hw
*hw
= &adapter
->hw
;
1283 uint32_t tdlen
, tctl
, tipg
, tarc
;
1284 uint32_t ipgr1
, ipgr2
;
1286 /* Setup the HW Tx Head and Tail descriptor pointers */
1288 switch (adapter
->num_tx_queues
) {
1291 tdba
= adapter
->tx_ring
[0].dma
;
1292 tdlen
= adapter
->tx_ring
[0].count
*
1293 sizeof(struct e1000_tx_desc
);
1294 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1295 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1296 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1297 E1000_WRITE_REG(hw
, TDH
, 0);
1298 E1000_WRITE_REG(hw
, TDT
, 0);
1299 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1300 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1304 /* Set the default values for the Tx Inter Packet Gap timer */
1306 if (hw
->media_type
== e1000_media_type_fiber
||
1307 hw
->media_type
== e1000_media_type_internal_serdes
)
1308 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1310 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1312 switch (hw
->mac_type
) {
1313 case e1000_82542_rev2_0
:
1314 case e1000_82542_rev2_1
:
1315 tipg
= DEFAULT_82542_TIPG_IPGT
;
1316 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1317 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1319 case e1000_80003es2lan
:
1320 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1321 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1324 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1325 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1328 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1329 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1330 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1332 /* Set the Tx Interrupt Delay register */
1334 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1335 if (hw
->mac_type
>= e1000_82540
)
1336 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1338 /* Program the Transmit Control Register */
1340 tctl
= E1000_READ_REG(hw
, TCTL
);
1342 tctl
&= ~E1000_TCTL_CT
;
1343 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1344 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1347 /* disable Multiple Reads for debugging */
1348 tctl
&= ~E1000_TCTL_MULR
;
1351 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1352 tarc
= E1000_READ_REG(hw
, TARC0
);
1353 tarc
|= ((1 << 25) | (1 << 21));
1354 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1355 tarc
= E1000_READ_REG(hw
, TARC1
);
1357 if (tctl
& E1000_TCTL_MULR
)
1361 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1362 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1363 tarc
= E1000_READ_REG(hw
, TARC0
);
1365 if (hw
->media_type
== e1000_media_type_internal_serdes
)
1367 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1368 tarc
= E1000_READ_REG(hw
, TARC1
);
1370 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1373 e1000_config_collision_dist(hw
);
1375 /* Setup Transmit Descriptor Settings for eop descriptor */
1376 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1379 if (hw
->mac_type
< e1000_82543
)
1380 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1382 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1384 /* Cache if we're 82544 running in PCI-X because we'll
1385 * need this to apply a workaround later in the send path. */
1386 if (hw
->mac_type
== e1000_82544
&&
1387 hw
->bus_type
== e1000_bus_type_pcix
)
1388 adapter
->pcix_82544
= 1;
1390 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1395 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1396 * @adapter: board private structure
1397 * @rxdr: rx descriptor ring (for a specific queue) to setup
1399 * Returns 0 on success, negative on failure
1403 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1404 struct e1000_rx_ring
*rxdr
)
1406 struct pci_dev
*pdev
= adapter
->pdev
;
1409 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1410 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1411 if (!rxdr
->buffer_info
) {
1413 "Unable to allocate memory for the receive descriptor ring\n");
1416 memset(rxdr
->buffer_info
, 0, size
);
1418 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1419 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1420 if (!rxdr
->ps_page
) {
1421 vfree(rxdr
->buffer_info
);
1423 "Unable to allocate memory for the receive descriptor ring\n");
1426 memset(rxdr
->ps_page
, 0, size
);
1428 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1429 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1430 if (!rxdr
->ps_page_dma
) {
1431 vfree(rxdr
->buffer_info
);
1432 kfree(rxdr
->ps_page
);
1434 "Unable to allocate memory for the receive descriptor ring\n");
1437 memset(rxdr
->ps_page_dma
, 0, size
);
1439 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1440 desc_len
= sizeof(struct e1000_rx_desc
);
1442 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1444 /* Round up to nearest 4K */
1446 rxdr
->size
= rxdr
->count
* desc_len
;
1447 E1000_ROUNDUP(rxdr
->size
, 4096);
1449 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1453 "Unable to allocate memory for the receive descriptor ring\n");
1455 vfree(rxdr
->buffer_info
);
1456 kfree(rxdr
->ps_page
);
1457 kfree(rxdr
->ps_page_dma
);
1461 /* Fix for errata 23, can't cross 64kB boundary */
1462 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1463 void *olddesc
= rxdr
->desc
;
1464 dma_addr_t olddma
= rxdr
->dma
;
1465 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1466 "at %p\n", rxdr
->size
, rxdr
->desc
);
1467 /* Try again, without freeing the previous */
1468 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1469 /* Failed allocation, critical failure */
1471 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1473 "Unable to allocate memory "
1474 "for the receive descriptor ring\n");
1475 goto setup_rx_desc_die
;
1478 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1480 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1482 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1484 "Unable to allocate aligned memory "
1485 "for the receive descriptor ring\n");
1486 goto setup_rx_desc_die
;
1488 /* Free old allocation, new allocation was successful */
1489 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1492 memset(rxdr
->desc
, 0, rxdr
->size
);
1494 rxdr
->next_to_clean
= 0;
1495 rxdr
->next_to_use
= 0;
1501 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1502 * (Descriptors) for all queues
1503 * @adapter: board private structure
1505 * If this function returns with an error, then it's possible one or
1506 * more of the rings is populated (while the rest are not). It is the
1507 * callers duty to clean those orphaned rings.
1509 * Return 0 on success, negative on failure
1513 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1517 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1518 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1521 "Allocation for Rx Queue %u failed\n", i
);
1530 * e1000_setup_rctl - configure the receive control registers
1531 * @adapter: Board private structure
1533 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1534 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1536 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1538 uint32_t rctl
, rfctl
;
1539 uint32_t psrctl
= 0;
1540 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1544 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1546 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1548 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1549 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1550 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1552 if (adapter
->hw
.mac_type
> e1000_82543
)
1553 rctl
|= E1000_RCTL_SECRC
;
1555 if (adapter
->hw
.tbi_compatibility_on
== 1)
1556 rctl
|= E1000_RCTL_SBP
;
1558 rctl
&= ~E1000_RCTL_SBP
;
1560 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1561 rctl
&= ~E1000_RCTL_LPE
;
1563 rctl
|= E1000_RCTL_LPE
;
1565 /* Setup buffer sizes */
1566 rctl
&= ~E1000_RCTL_SZ_4096
;
1567 rctl
|= E1000_RCTL_BSEX
;
1568 switch (adapter
->rx_buffer_len
) {
1569 case E1000_RXBUFFER_256
:
1570 rctl
|= E1000_RCTL_SZ_256
;
1571 rctl
&= ~E1000_RCTL_BSEX
;
1573 case E1000_RXBUFFER_512
:
1574 rctl
|= E1000_RCTL_SZ_512
;
1575 rctl
&= ~E1000_RCTL_BSEX
;
1577 case E1000_RXBUFFER_1024
:
1578 rctl
|= E1000_RCTL_SZ_1024
;
1579 rctl
&= ~E1000_RCTL_BSEX
;
1581 case E1000_RXBUFFER_2048
:
1583 rctl
|= E1000_RCTL_SZ_2048
;
1584 rctl
&= ~E1000_RCTL_BSEX
;
1586 case E1000_RXBUFFER_4096
:
1587 rctl
|= E1000_RCTL_SZ_4096
;
1589 case E1000_RXBUFFER_8192
:
1590 rctl
|= E1000_RCTL_SZ_8192
;
1592 case E1000_RXBUFFER_16384
:
1593 rctl
|= E1000_RCTL_SZ_16384
;
1597 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1598 /* 82571 and greater support packet-split where the protocol
1599 * header is placed in skb->data and the packet data is
1600 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1601 * In the case of a non-split, skb->data is linearly filled,
1602 * followed by the page buffers. Therefore, skb->data is
1603 * sized to hold the largest protocol header.
1605 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1606 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1608 adapter
->rx_ps_pages
= pages
;
1610 adapter
->rx_ps_pages
= 0;
1612 if (adapter
->rx_ps_pages
) {
1613 /* Configure extra packet-split registers */
1614 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1615 rfctl
|= E1000_RFCTL_EXTEN
;
1616 /* disable IPv6 packet split support */
1617 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1618 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1620 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1622 psrctl
|= adapter
->rx_ps_bsize0
>>
1623 E1000_PSRCTL_BSIZE0_SHIFT
;
1625 switch (adapter
->rx_ps_pages
) {
1627 psrctl
|= PAGE_SIZE
<<
1628 E1000_PSRCTL_BSIZE3_SHIFT
;
1630 psrctl
|= PAGE_SIZE
<<
1631 E1000_PSRCTL_BSIZE2_SHIFT
;
1633 psrctl
|= PAGE_SIZE
>>
1634 E1000_PSRCTL_BSIZE1_SHIFT
;
1638 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1641 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1645 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1646 * @adapter: board private structure
1648 * Configure the Rx unit of the MAC after a reset.
1652 e1000_configure_rx(struct e1000_adapter
*adapter
)
1655 struct e1000_hw
*hw
= &adapter
->hw
;
1656 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1658 if (adapter
->rx_ps_pages
) {
1659 /* this is a 32 byte descriptor */
1660 rdlen
= adapter
->rx_ring
[0].count
*
1661 sizeof(union e1000_rx_desc_packet_split
);
1662 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1663 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1665 rdlen
= adapter
->rx_ring
[0].count
*
1666 sizeof(struct e1000_rx_desc
);
1667 adapter
->clean_rx
= e1000_clean_rx_irq
;
1668 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1671 /* disable receives while setting up the descriptors */
1672 rctl
= E1000_READ_REG(hw
, RCTL
);
1673 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1675 /* set the Receive Delay Timer Register */
1676 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1678 if (hw
->mac_type
>= e1000_82540
) {
1679 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1680 if (adapter
->itr
> 1)
1681 E1000_WRITE_REG(hw
, ITR
,
1682 1000000000 / (adapter
->itr
* 256));
1685 if (hw
->mac_type
>= e1000_82571
) {
1686 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1687 /* Reset delay timers after every interrupt */
1688 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1689 #ifdef CONFIG_E1000_NAPI
1690 /* Auto-Mask interrupts upon ICR read. */
1691 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1693 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1694 E1000_WRITE_REG(hw
, IAM
, ~0);
1695 E1000_WRITE_FLUSH(hw
);
1698 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1699 * the Base and Length of the Rx Descriptor Ring */
1700 switch (adapter
->num_rx_queues
) {
1703 rdba
= adapter
->rx_ring
[0].dma
;
1704 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1705 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1706 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1707 E1000_WRITE_REG(hw
, RDH
, 0);
1708 E1000_WRITE_REG(hw
, RDT
, 0);
1709 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1710 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1714 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1715 if (hw
->mac_type
>= e1000_82543
) {
1716 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1717 if (adapter
->rx_csum
== TRUE
) {
1718 rxcsum
|= E1000_RXCSUM_TUOFL
;
1720 /* Enable 82571 IPv4 payload checksum for UDP fragments
1721 * Must be used in conjunction with packet-split. */
1722 if ((hw
->mac_type
>= e1000_82571
) &&
1723 (adapter
->rx_ps_pages
)) {
1724 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1727 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1728 /* don't need to clear IPPCSE as it defaults to 0 */
1730 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1733 if (hw
->mac_type
== e1000_82573
)
1734 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1736 /* Enable Receives */
1737 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1741 * e1000_free_tx_resources - Free Tx Resources per Queue
1742 * @adapter: board private structure
1743 * @tx_ring: Tx descriptor ring for a specific queue
1745 * Free all transmit software resources
1749 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1750 struct e1000_tx_ring
*tx_ring
)
1752 struct pci_dev
*pdev
= adapter
->pdev
;
1754 e1000_clean_tx_ring(adapter
, tx_ring
);
1756 vfree(tx_ring
->buffer_info
);
1757 tx_ring
->buffer_info
= NULL
;
1759 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1761 tx_ring
->desc
= NULL
;
1765 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1766 * @adapter: board private structure
1768 * Free all transmit software resources
1772 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1776 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1777 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1781 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1782 struct e1000_buffer
*buffer_info
)
1784 if (buffer_info
->dma
) {
1785 pci_unmap_page(adapter
->pdev
,
1787 buffer_info
->length
,
1790 if (buffer_info
->skb
)
1791 dev_kfree_skb_any(buffer_info
->skb
);
1792 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1796 * e1000_clean_tx_ring - Free Tx Buffers
1797 * @adapter: board private structure
1798 * @tx_ring: ring to be cleaned
1802 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1803 struct e1000_tx_ring
*tx_ring
)
1805 struct e1000_buffer
*buffer_info
;
1809 /* Free all the Tx ring sk_buffs */
1811 for (i
= 0; i
< tx_ring
->count
; i
++) {
1812 buffer_info
= &tx_ring
->buffer_info
[i
];
1813 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1816 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1817 memset(tx_ring
->buffer_info
, 0, size
);
1819 /* Zero out the descriptor ring */
1821 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1823 tx_ring
->next_to_use
= 0;
1824 tx_ring
->next_to_clean
= 0;
1825 tx_ring
->last_tx_tso
= 0;
1827 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1828 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1832 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1833 * @adapter: board private structure
1837 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1841 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1842 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1846 * e1000_free_rx_resources - Free Rx Resources
1847 * @adapter: board private structure
1848 * @rx_ring: ring to clean the resources from
1850 * Free all receive software resources
1854 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1855 struct e1000_rx_ring
*rx_ring
)
1857 struct pci_dev
*pdev
= adapter
->pdev
;
1859 e1000_clean_rx_ring(adapter
, rx_ring
);
1861 vfree(rx_ring
->buffer_info
);
1862 rx_ring
->buffer_info
= NULL
;
1863 kfree(rx_ring
->ps_page
);
1864 rx_ring
->ps_page
= NULL
;
1865 kfree(rx_ring
->ps_page_dma
);
1866 rx_ring
->ps_page_dma
= NULL
;
1868 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1870 rx_ring
->desc
= NULL
;
1874 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1875 * @adapter: board private structure
1877 * Free all receive software resources
1881 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1885 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1886 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1890 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1891 * @adapter: board private structure
1892 * @rx_ring: ring to free buffers from
1896 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1897 struct e1000_rx_ring
*rx_ring
)
1899 struct e1000_buffer
*buffer_info
;
1900 struct e1000_ps_page
*ps_page
;
1901 struct e1000_ps_page_dma
*ps_page_dma
;
1902 struct pci_dev
*pdev
= adapter
->pdev
;
1906 /* Free all the Rx ring sk_buffs */
1907 for (i
= 0; i
< rx_ring
->count
; i
++) {
1908 buffer_info
= &rx_ring
->buffer_info
[i
];
1909 if (buffer_info
->skb
) {
1910 pci_unmap_single(pdev
,
1912 buffer_info
->length
,
1913 PCI_DMA_FROMDEVICE
);
1915 dev_kfree_skb(buffer_info
->skb
);
1916 buffer_info
->skb
= NULL
;
1918 ps_page
= &rx_ring
->ps_page
[i
];
1919 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1920 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1921 if (!ps_page
->ps_page
[j
]) break;
1922 pci_unmap_page(pdev
,
1923 ps_page_dma
->ps_page_dma
[j
],
1924 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1925 ps_page_dma
->ps_page_dma
[j
] = 0;
1926 put_page(ps_page
->ps_page
[j
]);
1927 ps_page
->ps_page
[j
] = NULL
;
1931 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1932 memset(rx_ring
->buffer_info
, 0, size
);
1933 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1934 memset(rx_ring
->ps_page
, 0, size
);
1935 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1936 memset(rx_ring
->ps_page_dma
, 0, size
);
1938 /* Zero out the descriptor ring */
1940 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1942 rx_ring
->next_to_clean
= 0;
1943 rx_ring
->next_to_use
= 0;
1945 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1946 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1950 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1951 * @adapter: board private structure
1955 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
1959 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1960 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1963 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1964 * and memory write and invalidate disabled for certain operations
1967 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
1969 struct net_device
*netdev
= adapter
->netdev
;
1972 e1000_pci_clear_mwi(&adapter
->hw
);
1974 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1975 rctl
|= E1000_RCTL_RST
;
1976 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1977 E1000_WRITE_FLUSH(&adapter
->hw
);
1980 if (netif_running(netdev
))
1981 e1000_clean_all_rx_rings(adapter
);
1985 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
1987 struct net_device
*netdev
= adapter
->netdev
;
1990 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1991 rctl
&= ~E1000_RCTL_RST
;
1992 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1993 E1000_WRITE_FLUSH(&adapter
->hw
);
1996 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
1997 e1000_pci_set_mwi(&adapter
->hw
);
1999 if (netif_running(netdev
)) {
2000 /* No need to loop, because 82542 supports only 1 queue */
2001 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2002 e1000_configure_rx(adapter
);
2003 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2008 * e1000_set_mac - Change the Ethernet Address of the NIC
2009 * @netdev: network interface device structure
2010 * @p: pointer to an address structure
2012 * Returns 0 on success, negative on failure
2016 e1000_set_mac(struct net_device
*netdev
, void *p
)
2018 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2019 struct sockaddr
*addr
= p
;
2021 if (!is_valid_ether_addr(addr
->sa_data
))
2022 return -EADDRNOTAVAIL
;
2024 /* 82542 2.0 needs to be in reset to write receive address registers */
2026 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2027 e1000_enter_82542_rst(adapter
);
2029 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2030 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2032 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2034 /* With 82571 controllers, LAA may be overwritten (with the default)
2035 * due to controller reset from the other port. */
2036 if (adapter
->hw
.mac_type
== e1000_82571
) {
2037 /* activate the work around */
2038 adapter
->hw
.laa_is_present
= 1;
2040 /* Hold a copy of the LAA in RAR[14] This is done so that
2041 * between the time RAR[0] gets clobbered and the time it
2042 * gets fixed (in e1000_watchdog), the actual LAA is in one
2043 * of the RARs and no incoming packets directed to this port
2044 * are dropped. Eventaully the LAA will be in RAR[0] and
2046 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2047 E1000_RAR_ENTRIES
- 1);
2050 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2051 e1000_leave_82542_rst(adapter
);
2057 * e1000_set_multi - Multicast and Promiscuous mode set
2058 * @netdev: network interface device structure
2060 * The set_multi entry point is called whenever the multicast address
2061 * list or the network interface flags are updated. This routine is
2062 * responsible for configuring the hardware for proper multicast,
2063 * promiscuous mode, and all-multi behavior.
2067 e1000_set_multi(struct net_device
*netdev
)
2069 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2070 struct e1000_hw
*hw
= &adapter
->hw
;
2071 struct dev_mc_list
*mc_ptr
;
2073 uint32_t hash_value
;
2074 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2076 /* reserve RAR[14] for LAA over-write work-around */
2077 if (adapter
->hw
.mac_type
== e1000_82571
)
2080 /* Check for Promiscuous and All Multicast modes */
2082 rctl
= E1000_READ_REG(hw
, RCTL
);
2084 if (netdev
->flags
& IFF_PROMISC
) {
2085 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2086 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2087 rctl
|= E1000_RCTL_MPE
;
2088 rctl
&= ~E1000_RCTL_UPE
;
2090 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2093 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2095 /* 82542 2.0 needs to be in reset to write receive address registers */
2097 if (hw
->mac_type
== e1000_82542_rev2_0
)
2098 e1000_enter_82542_rst(adapter
);
2100 /* load the first 14 multicast address into the exact filters 1-14
2101 * RAR 0 is used for the station MAC adddress
2102 * if there are not 14 addresses, go ahead and clear the filters
2103 * -- with 82571 controllers only 0-13 entries are filled here
2105 mc_ptr
= netdev
->mc_list
;
2107 for (i
= 1; i
< rar_entries
; i
++) {
2109 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2110 mc_ptr
= mc_ptr
->next
;
2112 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2113 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2117 /* clear the old settings from the multicast hash table */
2119 for (i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2120 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2122 /* load any remaining addresses into the hash table */
2124 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2125 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2126 e1000_mta_set(hw
, hash_value
);
2129 if (hw
->mac_type
== e1000_82542_rev2_0
)
2130 e1000_leave_82542_rst(adapter
);
2133 /* Need to wait a few seconds after link up to get diagnostic information from
2137 e1000_update_phy_info(unsigned long data
)
2139 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2140 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2144 * e1000_82547_tx_fifo_stall - Timer Call-back
2145 * @data: pointer to adapter cast into an unsigned long
2149 e1000_82547_tx_fifo_stall(unsigned long data
)
2151 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2152 struct net_device
*netdev
= adapter
->netdev
;
2155 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2156 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2157 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2158 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2159 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2160 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2161 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2162 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2163 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2164 tctl
& ~E1000_TCTL_EN
);
2165 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2166 adapter
->tx_head_addr
);
2167 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2168 adapter
->tx_head_addr
);
2169 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2170 adapter
->tx_head_addr
);
2171 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2172 adapter
->tx_head_addr
);
2173 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2174 E1000_WRITE_FLUSH(&adapter
->hw
);
2176 adapter
->tx_fifo_head
= 0;
2177 atomic_set(&adapter
->tx_fifo_stall
, 0);
2178 netif_wake_queue(netdev
);
2180 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2186 * e1000_watchdog - Timer Call-back
2187 * @data: pointer to adapter cast into an unsigned long
2190 e1000_watchdog(unsigned long data
)
2192 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2194 /* Do the rest outside of interrupt context */
2195 schedule_work(&adapter
->watchdog_task
);
2199 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2201 struct net_device
*netdev
= adapter
->netdev
;
2202 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2203 uint32_t link
, tctl
;
2205 e1000_check_for_link(&adapter
->hw
);
2206 if (adapter
->hw
.mac_type
== e1000_82573
) {
2207 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2208 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2209 e1000_update_mng_vlan(adapter
);
2212 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2213 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2214 link
= !adapter
->hw
.serdes_link_down
;
2216 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2219 if (!netif_carrier_ok(netdev
)) {
2220 boolean_t txb2b
= 1;
2221 e1000_get_speed_and_duplex(&adapter
->hw
,
2222 &adapter
->link_speed
,
2223 &adapter
->link_duplex
);
2225 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2226 adapter
->link_speed
,
2227 adapter
->link_duplex
== FULL_DUPLEX
?
2228 "Full Duplex" : "Half Duplex");
2230 /* tweak tx_queue_len according to speed/duplex
2231 * and adjust the timeout factor */
2232 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2233 adapter
->tx_timeout_factor
= 1;
2234 switch (adapter
->link_speed
) {
2237 netdev
->tx_queue_len
= 10;
2238 adapter
->tx_timeout_factor
= 8;
2242 netdev
->tx_queue_len
= 100;
2243 /* maybe add some timeout factor ? */
2247 if ((adapter
->hw
.mac_type
== e1000_82571
||
2248 adapter
->hw
.mac_type
== e1000_82572
) &&
2250 #define SPEED_MODE_BIT (1 << 21)
2252 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2253 tarc0
&= ~SPEED_MODE_BIT
;
2254 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2258 /* disable TSO for pcie and 10/100 speeds, to avoid
2259 * some hardware issues */
2260 if (!adapter
->tso_force
&&
2261 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2262 switch (adapter
->link_speed
) {
2266 "10/100 speed: disabling TSO\n");
2267 netdev
->features
&= ~NETIF_F_TSO
;
2270 netdev
->features
|= NETIF_F_TSO
;
2279 /* enable transmits in the hardware, need to do this
2280 * after setting TARC0 */
2281 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2282 tctl
|= E1000_TCTL_EN
;
2283 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2285 netif_carrier_on(netdev
);
2286 netif_wake_queue(netdev
);
2287 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2288 adapter
->smartspeed
= 0;
2291 if (netif_carrier_ok(netdev
)) {
2292 adapter
->link_speed
= 0;
2293 adapter
->link_duplex
= 0;
2294 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2295 netif_carrier_off(netdev
);
2296 netif_stop_queue(netdev
);
2297 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2299 /* 80003ES2LAN workaround--
2300 * For packet buffer work-around on link down event;
2301 * disable receives in the ISR and
2302 * reset device here in the watchdog
2304 if (adapter
->hw
.mac_type
== e1000_80003es2lan
) {
2306 schedule_work(&adapter
->reset_task
);
2310 e1000_smartspeed(adapter
);
2313 e1000_update_stats(adapter
);
2315 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2316 adapter
->tpt_old
= adapter
->stats
.tpt
;
2317 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2318 adapter
->colc_old
= adapter
->stats
.colc
;
2320 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2321 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2322 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2323 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2325 e1000_update_adaptive(&adapter
->hw
);
2327 if (!netif_carrier_ok(netdev
)) {
2328 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2329 /* We've lost link, so the controller stops DMA,
2330 * but we've got queued Tx work that's never going
2331 * to get done, so reset controller to flush Tx.
2332 * (Do the reset outside of interrupt context). */
2333 adapter
->tx_timeout_count
++;
2334 schedule_work(&adapter
->reset_task
);
2338 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2339 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2340 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2341 * asymmetrical Tx or Rx gets ITR=8000; everyone
2342 * else is between 2000-8000. */
2343 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2344 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2345 adapter
->gotcl
- adapter
->gorcl
:
2346 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2347 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2348 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2351 /* Cause software interrupt to ensure rx ring is cleaned */
2352 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2354 /* Force detection of hung controller every watchdog period */
2355 adapter
->detect_tx_hung
= TRUE
;
2357 /* With 82571 controllers, LAA may be overwritten due to controller
2358 * reset from the other port. Set the appropriate LAA in RAR[0] */
2359 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2360 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2362 /* Reset the timer */
2363 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2366 #define E1000_TX_FLAGS_CSUM 0x00000001
2367 #define E1000_TX_FLAGS_VLAN 0x00000002
2368 #define E1000_TX_FLAGS_TSO 0x00000004
2369 #define E1000_TX_FLAGS_IPV4 0x00000008
2370 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2371 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2374 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2375 struct sk_buff
*skb
)
2378 struct e1000_context_desc
*context_desc
;
2379 struct e1000_buffer
*buffer_info
;
2381 uint32_t cmd_length
= 0;
2382 uint16_t ipcse
= 0, tucse
, mss
;
2383 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2386 if (skb_shinfo(skb
)->tso_size
) {
2387 if (skb_header_cloned(skb
)) {
2388 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2393 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2394 mss
= skb_shinfo(skb
)->tso_size
;
2395 if (skb
->protocol
== htons(ETH_P_IP
)) {
2396 skb
->nh
.iph
->tot_len
= 0;
2397 skb
->nh
.iph
->check
= 0;
2399 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2404 cmd_length
= E1000_TXD_CMD_IP
;
2405 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2406 #ifdef NETIF_F_TSO_IPV6
2407 } else if (skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2408 skb
->nh
.ipv6h
->payload_len
= 0;
2410 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2411 &skb
->nh
.ipv6h
->daddr
,
2418 ipcss
= skb
->nh
.raw
- skb
->data
;
2419 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2420 tucss
= skb
->h
.raw
- skb
->data
;
2421 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2424 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2425 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2427 i
= tx_ring
->next_to_use
;
2428 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2429 buffer_info
= &tx_ring
->buffer_info
[i
];
2431 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2432 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2433 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2434 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2435 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2436 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2437 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2438 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2439 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2441 buffer_info
->time_stamp
= jiffies
;
2443 if (++i
== tx_ring
->count
) i
= 0;
2444 tx_ring
->next_to_use
= i
;
2454 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2455 struct sk_buff
*skb
)
2457 struct e1000_context_desc
*context_desc
;
2458 struct e1000_buffer
*buffer_info
;
2462 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2463 css
= skb
->h
.raw
- skb
->data
;
2465 i
= tx_ring
->next_to_use
;
2466 buffer_info
= &tx_ring
->buffer_info
[i
];
2467 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2469 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2470 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2471 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2472 context_desc
->tcp_seg_setup
.data
= 0;
2473 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2475 buffer_info
->time_stamp
= jiffies
;
2477 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2478 tx_ring
->next_to_use
= i
;
2486 #define E1000_MAX_TXD_PWR 12
2487 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2490 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2491 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2492 unsigned int nr_frags
, unsigned int mss
)
2494 struct e1000_buffer
*buffer_info
;
2495 unsigned int len
= skb
->len
;
2496 unsigned int offset
= 0, size
, count
= 0, i
;
2498 len
-= skb
->data_len
;
2500 i
= tx_ring
->next_to_use
;
2503 buffer_info
= &tx_ring
->buffer_info
[i
];
2504 size
= min(len
, max_per_txd
);
2506 /* Workaround for Controller erratum --
2507 * descriptor for non-tso packet in a linear SKB that follows a
2508 * tso gets written back prematurely before the data is fully
2509 * DMA'd to the controller */
2510 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2511 !skb_shinfo(skb
)->tso_size
) {
2512 tx_ring
->last_tx_tso
= 0;
2516 /* Workaround for premature desc write-backs
2517 * in TSO mode. Append 4-byte sentinel desc */
2518 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2521 /* work-around for errata 10 and it applies
2522 * to all controllers in PCI-X mode
2523 * The fix is to make sure that the first descriptor of a
2524 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2526 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2527 (size
> 2015) && count
== 0))
2530 /* Workaround for potential 82544 hang in PCI-X. Avoid
2531 * terminating buffers within evenly-aligned dwords. */
2532 if (unlikely(adapter
->pcix_82544
&&
2533 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2537 buffer_info
->length
= size
;
2539 pci_map_single(adapter
->pdev
,
2543 buffer_info
->time_stamp
= jiffies
;
2548 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2551 for (f
= 0; f
< nr_frags
; f
++) {
2552 struct skb_frag_struct
*frag
;
2554 frag
= &skb_shinfo(skb
)->frags
[f
];
2556 offset
= frag
->page_offset
;
2559 buffer_info
= &tx_ring
->buffer_info
[i
];
2560 size
= min(len
, max_per_txd
);
2562 /* Workaround for premature desc write-backs
2563 * in TSO mode. Append 4-byte sentinel desc */
2564 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2567 /* Workaround for potential 82544 hang in PCI-X.
2568 * Avoid terminating buffers within evenly-aligned
2570 if (unlikely(adapter
->pcix_82544
&&
2571 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2575 buffer_info
->length
= size
;
2577 pci_map_page(adapter
->pdev
,
2582 buffer_info
->time_stamp
= jiffies
;
2587 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2591 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2592 tx_ring
->buffer_info
[i
].skb
= skb
;
2593 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2599 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2600 int tx_flags
, int count
)
2602 struct e1000_tx_desc
*tx_desc
= NULL
;
2603 struct e1000_buffer
*buffer_info
;
2604 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2607 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2608 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2610 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2612 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2613 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2616 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2617 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2618 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2621 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2622 txd_lower
|= E1000_TXD_CMD_VLE
;
2623 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2626 i
= tx_ring
->next_to_use
;
2629 buffer_info
= &tx_ring
->buffer_info
[i
];
2630 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2631 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2632 tx_desc
->lower
.data
=
2633 cpu_to_le32(txd_lower
| buffer_info
->length
);
2634 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2635 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2638 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2640 /* Force memory writes to complete before letting h/w
2641 * know there are new descriptors to fetch. (Only
2642 * applicable for weak-ordered memory model archs,
2643 * such as IA-64). */
2646 tx_ring
->next_to_use
= i
;
2647 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2651 * 82547 workaround to avoid controller hang in half-duplex environment.
2652 * The workaround is to avoid queuing a large packet that would span
2653 * the internal Tx FIFO ring boundary by notifying the stack to resend
2654 * the packet at a later time. This gives the Tx FIFO an opportunity to
2655 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2656 * to the beginning of the Tx FIFO.
2659 #define E1000_FIFO_HDR 0x10
2660 #define E1000_82547_PAD_LEN 0x3E0
2663 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2665 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2666 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2668 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2670 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2671 goto no_fifo_stall_required
;
2673 if (atomic_read(&adapter
->tx_fifo_stall
))
2676 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2677 atomic_set(&adapter
->tx_fifo_stall
, 1);
2681 no_fifo_stall_required
:
2682 adapter
->tx_fifo_head
+= skb_fifo_len
;
2683 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2684 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2688 #define MINIMUM_DHCP_PACKET_SIZE 282
2690 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2692 struct e1000_hw
*hw
= &adapter
->hw
;
2693 uint16_t length
, offset
;
2694 if (vlan_tx_tag_present(skb
)) {
2695 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2696 ( adapter
->hw
.mng_cookie
.status
&
2697 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2700 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2701 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2702 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2703 const struct iphdr
*ip
=
2704 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2705 if (IPPROTO_UDP
== ip
->protocol
) {
2706 struct udphdr
*udp
=
2707 (struct udphdr
*)((uint8_t *)ip
+
2709 if (ntohs(udp
->dest
) == 67) {
2710 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2711 length
= skb
->len
- offset
;
2713 return e1000_mng_write_dhcp_info(hw
,
2723 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2725 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2727 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2728 struct e1000_tx_ring
*tx_ring
;
2729 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2730 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2731 unsigned int tx_flags
= 0;
2732 unsigned int len
= skb
->len
;
2733 unsigned long flags
;
2734 unsigned int nr_frags
= 0;
2735 unsigned int mss
= 0;
2739 len
-= skb
->data_len
;
2741 tx_ring
= adapter
->tx_ring
;
2743 if (unlikely(skb
->len
<= 0)) {
2744 dev_kfree_skb_any(skb
);
2745 return NETDEV_TX_OK
;
2749 mss
= skb_shinfo(skb
)->tso_size
;
2750 /* The controller does a simple calculation to
2751 * make sure there is enough room in the FIFO before
2752 * initiating the DMA for each buffer. The calc is:
2753 * 4 = ceil(buffer len/mss). To make sure we don't
2754 * overrun the FIFO, adjust the max buffer len if mss
2758 max_per_txd
= min(mss
<< 2, max_per_txd
);
2759 max_txd_pwr
= fls(max_per_txd
) - 1;
2761 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2762 * points to just header, pull a few bytes of payload from
2763 * frags into skb->data */
2764 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2765 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2766 switch (adapter
->hw
.mac_type
) {
2767 unsigned int pull_size
;
2771 pull_size
= min((unsigned int)4, skb
->data_len
);
2772 if (!__pskb_pull_tail(skb
, pull_size
)) {
2774 "__pskb_pull_tail failed.\n");
2775 dev_kfree_skb_any(skb
);
2776 return NETDEV_TX_OK
;
2778 len
= skb
->len
- skb
->data_len
;
2787 /* reserve a descriptor for the offload context */
2788 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2792 if (skb
->ip_summed
== CHECKSUM_HW
)
2797 /* Controller Erratum workaround */
2798 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2799 !skb_shinfo(skb
)->tso_size
)
2803 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2805 if (adapter
->pcix_82544
)
2808 /* work-around for errata 10 and it applies to all controllers
2809 * in PCI-X mode, so add one more descriptor to the count
2811 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2815 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2816 for (f
= 0; f
< nr_frags
; f
++)
2817 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2819 if (adapter
->pcix_82544
)
2823 if (adapter
->hw
.tx_pkt_filtering
&&
2824 (adapter
->hw
.mac_type
== e1000_82573
))
2825 e1000_transfer_dhcp_info(adapter
, skb
);
2827 local_irq_save(flags
);
2828 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2829 /* Collision - tell upper layer to requeue */
2830 local_irq_restore(flags
);
2831 return NETDEV_TX_LOCKED
;
2834 /* need: count + 2 desc gap to keep tail from touching
2835 * head, otherwise try next time */
2836 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2837 netif_stop_queue(netdev
);
2838 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2839 return NETDEV_TX_BUSY
;
2842 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2843 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2844 netif_stop_queue(netdev
);
2845 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2846 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2847 return NETDEV_TX_BUSY
;
2851 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2852 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2853 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2856 first
= tx_ring
->next_to_use
;
2858 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2860 dev_kfree_skb_any(skb
);
2861 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2862 return NETDEV_TX_OK
;
2866 tx_ring
->last_tx_tso
= 1;
2867 tx_flags
|= E1000_TX_FLAGS_TSO
;
2868 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2869 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2871 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2872 * 82571 hardware supports TSO capabilities for IPv6 as well...
2873 * no longer assume, we must. */
2874 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
2875 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2877 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2878 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2879 max_per_txd
, nr_frags
, mss
));
2881 netdev
->trans_start
= jiffies
;
2883 /* Make sure there is space in the ring for the next send. */
2884 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2885 netif_stop_queue(netdev
);
2887 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2888 return NETDEV_TX_OK
;
2892 * e1000_tx_timeout - Respond to a Tx Hang
2893 * @netdev: network interface device structure
2897 e1000_tx_timeout(struct net_device
*netdev
)
2899 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2901 /* Do the reset outside of interrupt context */
2902 adapter
->tx_timeout_count
++;
2903 schedule_work(&adapter
->reset_task
);
2907 e1000_reset_task(struct net_device
*netdev
)
2909 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2911 e1000_down(adapter
);
2916 * e1000_get_stats - Get System Network Statistics
2917 * @netdev: network interface device structure
2919 * Returns the address of the device statistics structure.
2920 * The statistics are actually updated from the timer callback.
2923 static struct net_device_stats
*
2924 e1000_get_stats(struct net_device
*netdev
)
2926 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2928 /* only return the current stats */
2929 return &adapter
->net_stats
;
2933 * e1000_change_mtu - Change the Maximum Transfer Unit
2934 * @netdev: network interface device structure
2935 * @new_mtu: new value for maximum frame size
2937 * Returns 0 on success, negative on failure
2941 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2943 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2944 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2945 uint16_t eeprom_data
= 0;
2947 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2948 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2949 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2953 /* Adapter-specific max frame size limits. */
2954 switch (adapter
->hw
.mac_type
) {
2955 case e1000_undefined
... e1000_82542_rev2_1
:
2956 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2957 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
2962 /* only enable jumbo frames if ASPM is disabled completely
2963 * this means both bits must be zero in 0x1A bits 3:2 */
2964 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
2966 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
2967 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2969 "Jumbo Frames not supported.\n");
2974 /* fall through to get support */
2977 case e1000_80003es2lan
:
2978 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2979 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2980 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
2985 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
2989 /* NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
2990 * means we reserve 2 more, this pushes us to allocate from the next
2992 * i.e. RXBUFFER_2048 --> size-4096 slab */
2994 if (max_frame
<= E1000_RXBUFFER_256
)
2995 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
2996 else if (max_frame
<= E1000_RXBUFFER_512
)
2997 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
2998 else if (max_frame
<= E1000_RXBUFFER_1024
)
2999 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3000 else if (max_frame
<= E1000_RXBUFFER_2048
)
3001 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3002 else if (max_frame
<= E1000_RXBUFFER_4096
)
3003 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3004 else if (max_frame
<= E1000_RXBUFFER_8192
)
3005 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3006 else if (max_frame
<= E1000_RXBUFFER_16384
)
3007 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3009 /* adjust allocation if LPE protects us, and we aren't using SBP */
3010 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
3011 if (!adapter
->hw
.tbi_compatibility_on
&&
3012 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3013 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3014 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3016 netdev
->mtu
= new_mtu
;
3018 if (netif_running(netdev
)) {
3019 e1000_down(adapter
);
3023 adapter
->hw
.max_frame_size
= max_frame
;
3029 * e1000_update_stats - Update the board statistics counters
3030 * @adapter: board private structure
3034 e1000_update_stats(struct e1000_adapter
*adapter
)
3036 struct e1000_hw
*hw
= &adapter
->hw
;
3037 unsigned long flags
;
3040 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3042 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3044 /* these counters are modified from e1000_adjust_tbi_stats,
3045 * called from the interrupt context, so they must only
3046 * be written while holding adapter->stats_lock
3049 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3050 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3051 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3052 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3053 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3054 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3055 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3056 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3057 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3058 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3059 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3060 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3061 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3063 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3064 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3065 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3066 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3067 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3068 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3069 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3070 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3071 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3072 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3073 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3074 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3075 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3076 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3077 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3078 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3079 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3080 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3081 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3082 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3083 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3084 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3085 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3086 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3087 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3088 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3089 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3090 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3091 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3092 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3093 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3094 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3095 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3096 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3098 /* used for adaptive IFS */
3100 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3101 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3102 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3103 adapter
->stats
.colc
+= hw
->collision_delta
;
3105 if (hw
->mac_type
>= e1000_82543
) {
3106 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3107 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3108 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3109 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3110 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3111 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3113 if (hw
->mac_type
> e1000_82547_rev_2
) {
3114 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3115 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3116 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3117 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3118 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3119 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3120 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3121 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3122 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3125 /* Fill out the OS statistics structure */
3127 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3128 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3129 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3130 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3131 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3132 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3136 /* RLEC on some newer hardware can be incorrect so build
3137 * our own version based on RUC and ROC */
3138 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3139 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3140 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3141 adapter
->stats
.cexterr
;
3142 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3144 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3145 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3146 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3150 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3151 adapter
->stats
.latecol
;
3152 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3153 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3154 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3156 /* Tx Dropped needs to be maintained elsewhere */
3160 if (hw
->media_type
== e1000_media_type_copper
) {
3161 if ((adapter
->link_speed
== SPEED_1000
) &&
3162 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3163 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3164 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3167 if ((hw
->mac_type
<= e1000_82546
) &&
3168 (hw
->phy_type
== e1000_phy_m88
) &&
3169 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3170 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3173 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3177 * e1000_intr - Interrupt Handler
3178 * @irq: interrupt number
3179 * @data: pointer to a network interface device structure
3180 * @pt_regs: CPU registers structure
3184 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3186 struct net_device
*netdev
= data
;
3187 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3188 struct e1000_hw
*hw
= &adapter
->hw
;
3189 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3190 #ifndef CONFIG_E1000_NAPI
3193 /* Interrupt Auto-Mask...upon reading ICR,
3194 * interrupts are masked. No need for the
3195 * IMC write, but it does mean we should
3196 * account for it ASAP. */
3197 if (likely(hw
->mac_type
>= e1000_82571
))
3198 atomic_inc(&adapter
->irq_sem
);
3201 if (unlikely(!icr
)) {
3202 #ifdef CONFIG_E1000_NAPI
3203 if (hw
->mac_type
>= e1000_82571
)
3204 e1000_irq_enable(adapter
);
3206 return IRQ_NONE
; /* Not our interrupt */
3209 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3210 hw
->get_link_status
= 1;
3211 /* 80003ES2LAN workaround--
3212 * For packet buffer work-around on link down event;
3213 * disable receives here in the ISR and
3214 * reset adapter in watchdog
3216 if (netif_carrier_ok(netdev
) &&
3217 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3218 /* disable receives */
3219 rctl
= E1000_READ_REG(hw
, RCTL
);
3220 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3222 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3225 #ifdef CONFIG_E1000_NAPI
3226 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3227 atomic_inc(&adapter
->irq_sem
);
3228 E1000_WRITE_REG(hw
, IMC
, ~0);
3229 E1000_WRITE_FLUSH(hw
);
3231 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3232 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3234 e1000_irq_enable(adapter
);
3236 /* Writing IMC and IMS is needed for 82547.
3237 * Due to Hub Link bus being occupied, an interrupt
3238 * de-assertion message is not able to be sent.
3239 * When an interrupt assertion message is generated later,
3240 * two messages are re-ordered and sent out.
3241 * That causes APIC to think 82547 is in de-assertion
3242 * state, while 82547 is in assertion state, resulting
3243 * in dead lock. Writing IMC forces 82547 into
3244 * de-assertion state.
3246 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3247 atomic_inc(&adapter
->irq_sem
);
3248 E1000_WRITE_REG(hw
, IMC
, ~0);
3251 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3252 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3253 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3256 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3257 e1000_irq_enable(adapter
);
3264 #ifdef CONFIG_E1000_NAPI
3266 * e1000_clean - NAPI Rx polling callback
3267 * @adapter: board private structure
3271 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3273 struct e1000_adapter
*adapter
;
3274 int work_to_do
= min(*budget
, poll_dev
->quota
);
3275 int tx_cleaned
= 0, i
= 0, work_done
= 0;
3277 /* Must NOT use netdev_priv macro here. */
3278 adapter
= poll_dev
->priv
;
3280 /* Keep link state information with original netdev */
3281 if (!netif_carrier_ok(adapter
->netdev
))
3284 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3286 BUG_ON(i
== adapter
->num_rx_queues
);
3289 if (likely(adapter
->num_tx_queues
== 1)) {
3290 /* e1000_clean is called per-cpu. This lock protects
3291 * tx_ring[0] from being cleaned by multiple cpus
3292 * simultaneously. A failure obtaining the lock means
3293 * tx_ring[0] is currently being cleaned anyway. */
3294 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3295 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3296 &adapter
->tx_ring
[0]);
3297 spin_unlock(&adapter
->tx_queue_lock
);
3300 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3302 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3303 &work_done
, work_to_do
);
3305 *budget
-= work_done
;
3306 poll_dev
->quota
-= work_done
;
3308 /* If no Tx and not enough Rx work done, exit the polling mode */
3309 if ((!tx_cleaned
&& (work_done
== 0)) ||
3310 !netif_running(adapter
->netdev
)) {
3312 netif_rx_complete(poll_dev
);
3313 e1000_irq_enable(adapter
);
3322 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3323 * @adapter: board private structure
3327 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3328 struct e1000_tx_ring
*tx_ring
)
3330 struct net_device
*netdev
= adapter
->netdev
;
3331 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3332 struct e1000_buffer
*buffer_info
;
3333 unsigned int i
, eop
;
3334 #ifdef CONFIG_E1000_NAPI
3335 unsigned int count
= 0;
3337 boolean_t cleaned
= FALSE
;
3339 i
= tx_ring
->next_to_clean
;
3340 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3341 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3343 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3344 for (cleaned
= FALSE
; !cleaned
; ) {
3345 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3346 buffer_info
= &tx_ring
->buffer_info
[i
];
3347 cleaned
= (i
== eop
);
3349 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3350 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3352 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3356 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3357 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3358 #ifdef CONFIG_E1000_NAPI
3359 #define E1000_TX_WEIGHT 64
3360 /* weight of a sort for tx, to avoid endless transmit cleanup */
3361 if (count
++ == E1000_TX_WEIGHT
) break;
3365 tx_ring
->next_to_clean
= i
;
3367 #define TX_WAKE_THRESHOLD 32
3368 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3369 netif_carrier_ok(netdev
))) {
3370 spin_lock(&tx_ring
->tx_lock
);
3371 if (netif_queue_stopped(netdev
) &&
3372 (E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))
3373 netif_wake_queue(netdev
);
3374 spin_unlock(&tx_ring
->tx_lock
);
3377 if (adapter
->detect_tx_hung
) {
3378 /* Detect a transmit hang in hardware, this serializes the
3379 * check with the clearing of time_stamp and movement of i */
3380 adapter
->detect_tx_hung
= FALSE
;
3381 if (tx_ring
->buffer_info
[eop
].dma
&&
3382 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3383 (adapter
->tx_timeout_factor
* HZ
))
3384 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3385 E1000_STATUS_TXOFF
)) {
3387 /* detected Tx unit hang */
3388 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3392 " next_to_use <%x>\n"
3393 " next_to_clean <%x>\n"
3394 "buffer_info[next_to_clean]\n"
3395 " time_stamp <%lx>\n"
3396 " next_to_watch <%x>\n"
3398 " next_to_watch.status <%x>\n",
3399 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3400 sizeof(struct e1000_tx_ring
)),
3401 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3402 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3403 tx_ring
->next_to_use
,
3404 tx_ring
->next_to_clean
,
3405 tx_ring
->buffer_info
[eop
].time_stamp
,
3408 eop_desc
->upper
.fields
.status
);
3409 netif_stop_queue(netdev
);
3416 * e1000_rx_checksum - Receive Checksum Offload for 82543
3417 * @adapter: board private structure
3418 * @status_err: receive descriptor status and error fields
3419 * @csum: receive descriptor csum field
3420 * @sk_buff: socket buffer with received data
3424 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3425 uint32_t status_err
, uint32_t csum
,
3426 struct sk_buff
*skb
)
3428 uint16_t status
= (uint16_t)status_err
;
3429 uint8_t errors
= (uint8_t)(status_err
>> 24);
3430 skb
->ip_summed
= CHECKSUM_NONE
;
3432 /* 82543 or newer only */
3433 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3434 /* Ignore Checksum bit is set */
3435 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3436 /* TCP/UDP checksum error bit is set */
3437 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3438 /* let the stack verify checksum errors */
3439 adapter
->hw_csum_err
++;
3442 /* TCP/UDP Checksum has not been calculated */
3443 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3444 if (!(status
& E1000_RXD_STAT_TCPCS
))
3447 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3450 /* It must be a TCP or UDP packet with a valid checksum */
3451 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3452 /* TCP checksum is good */
3453 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3454 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3455 /* IP fragment with UDP payload */
3456 /* Hardware complements the payload checksum, so we undo it
3457 * and then put the value in host order for further stack use.
3459 csum
= ntohl(csum
^ 0xFFFF);
3461 skb
->ip_summed
= CHECKSUM_HW
;
3463 adapter
->hw_csum_good
++;
3467 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3468 * @adapter: board private structure
3472 #ifdef CONFIG_E1000_NAPI
3473 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3474 struct e1000_rx_ring
*rx_ring
,
3475 int *work_done
, int work_to_do
)
3477 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3478 struct e1000_rx_ring
*rx_ring
)
3481 struct net_device
*netdev
= adapter
->netdev
;
3482 struct pci_dev
*pdev
= adapter
->pdev
;
3483 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3484 struct e1000_buffer
*buffer_info
, *next_buffer
;
3485 unsigned long flags
;
3489 int cleaned_count
= 0;
3490 boolean_t cleaned
= FALSE
;
3492 i
= rx_ring
->next_to_clean
;
3493 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3494 buffer_info
= &rx_ring
->buffer_info
[i
];
3496 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3497 struct sk_buff
*skb
, *next_skb
;
3499 #ifdef CONFIG_E1000_NAPI
3500 if (*work_done
>= work_to_do
)
3504 status
= rx_desc
->status
;
3505 skb
= buffer_info
->skb
;
3506 buffer_info
->skb
= NULL
;
3508 prefetch(skb
->data
- NET_IP_ALIGN
);
3510 if (++i
== rx_ring
->count
) i
= 0;
3511 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3514 next_buffer
= &rx_ring
->buffer_info
[i
];
3515 next_skb
= next_buffer
->skb
;
3516 prefetch(next_skb
->data
- NET_IP_ALIGN
);
3520 pci_unmap_single(pdev
,
3522 buffer_info
->length
,
3523 PCI_DMA_FROMDEVICE
);
3525 length
= le16_to_cpu(rx_desc
->length
);
3527 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3528 /* All receives must fit into a single buffer */
3529 E1000_DBG("%s: Receive packet consumed multiple"
3530 " buffers\n", netdev
->name
);
3531 dev_kfree_skb_irq(skb
);
3535 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3536 last_byte
= *(skb
->data
+ length
- 1);
3537 if (TBI_ACCEPT(&adapter
->hw
, status
,
3538 rx_desc
->errors
, length
, last_byte
)) {
3539 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3540 e1000_tbi_adjust_stats(&adapter
->hw
,
3543 spin_unlock_irqrestore(&adapter
->stats_lock
,
3548 buffer_info
->skb
= skb
;
3553 /* code added for copybreak, this should improve
3554 * performance for small packets with large amounts
3555 * of reassembly being done in the stack */
3556 #define E1000_CB_LENGTH 256
3557 if (length
< E1000_CB_LENGTH
) {
3558 struct sk_buff
*new_skb
=
3559 dev_alloc_skb(length
+ NET_IP_ALIGN
);
3561 skb_reserve(new_skb
, NET_IP_ALIGN
);
3562 new_skb
->dev
= netdev
;
3563 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3564 skb
->data
- NET_IP_ALIGN
,
3565 length
+ NET_IP_ALIGN
);
3566 /* save the skb in buffer_info as good */
3567 buffer_info
->skb
= skb
;
3569 skb_put(skb
, length
);
3572 skb_put(skb
, length
);
3574 /* end copybreak code */
3576 /* Receive Checksum Offload */
3577 e1000_rx_checksum(adapter
,
3578 (uint32_t)(status
) |
3579 ((uint32_t)(rx_desc
->errors
) << 24),
3580 le16_to_cpu(rx_desc
->csum
), skb
);
3582 skb
->protocol
= eth_type_trans(skb
, netdev
);
3583 #ifdef CONFIG_E1000_NAPI
3584 if (unlikely(adapter
->vlgrp
&&
3585 (status
& E1000_RXD_STAT_VP
))) {
3586 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3587 le16_to_cpu(rx_desc
->special
) &
3588 E1000_RXD_SPC_VLAN_MASK
);
3590 netif_receive_skb(skb
);
3592 #else /* CONFIG_E1000_NAPI */
3593 if (unlikely(adapter
->vlgrp
&&
3594 (status
& E1000_RXD_STAT_VP
))) {
3595 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3596 le16_to_cpu(rx_desc
->special
) &
3597 E1000_RXD_SPC_VLAN_MASK
);
3601 #endif /* CONFIG_E1000_NAPI */
3602 netdev
->last_rx
= jiffies
;
3605 rx_desc
->status
= 0;
3607 /* return some buffers to hardware, one at a time is too slow */
3608 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3609 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3613 /* use prefetched values */
3615 buffer_info
= next_buffer
;
3617 rx_ring
->next_to_clean
= i
;
3619 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3621 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3627 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3628 * @adapter: board private structure
3632 #ifdef CONFIG_E1000_NAPI
3633 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3634 struct e1000_rx_ring
*rx_ring
,
3635 int *work_done
, int work_to_do
)
3637 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3638 struct e1000_rx_ring
*rx_ring
)
3641 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3642 struct net_device
*netdev
= adapter
->netdev
;
3643 struct pci_dev
*pdev
= adapter
->pdev
;
3644 struct e1000_buffer
*buffer_info
, *next_buffer
;
3645 struct e1000_ps_page
*ps_page
;
3646 struct e1000_ps_page_dma
*ps_page_dma
;
3647 struct sk_buff
*skb
, *next_skb
;
3649 uint32_t length
, staterr
;
3650 int cleaned_count
= 0;
3651 boolean_t cleaned
= FALSE
;
3653 i
= rx_ring
->next_to_clean
;
3654 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3655 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3656 buffer_info
= &rx_ring
->buffer_info
[i
];
3658 while (staterr
& E1000_RXD_STAT_DD
) {
3659 buffer_info
= &rx_ring
->buffer_info
[i
];
3660 ps_page
= &rx_ring
->ps_page
[i
];
3661 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3662 #ifdef CONFIG_E1000_NAPI
3663 if (unlikely(*work_done
>= work_to_do
))
3667 skb
= buffer_info
->skb
;
3669 /* in the packet split case this is header only */
3670 prefetch(skb
->data
- NET_IP_ALIGN
);
3672 if (++i
== rx_ring
->count
) i
= 0;
3673 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3676 next_buffer
= &rx_ring
->buffer_info
[i
];
3677 next_skb
= next_buffer
->skb
;
3678 prefetch(next_skb
->data
- NET_IP_ALIGN
);
3682 pci_unmap_single(pdev
, buffer_info
->dma
,
3683 buffer_info
->length
,
3684 PCI_DMA_FROMDEVICE
);
3686 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3687 E1000_DBG("%s: Packet Split buffers didn't pick up"
3688 " the full packet\n", netdev
->name
);
3689 dev_kfree_skb_irq(skb
);
3693 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3694 dev_kfree_skb_irq(skb
);
3698 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3700 if (unlikely(!length
)) {
3701 E1000_DBG("%s: Last part of the packet spanning"
3702 " multiple descriptors\n", netdev
->name
);
3703 dev_kfree_skb_irq(skb
);
3708 skb_put(skb
, length
);
3711 /* this looks ugly, but it seems compiler issues make it
3712 more efficient than reusing j */
3713 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3715 /* page alloc/put takes too long and effects small packet
3716 * throughput, so unsplit small packets and save the alloc/put*/
3717 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3719 /* there is no documentation about how to call
3720 * kmap_atomic, so we can't hold the mapping
3722 pci_dma_sync_single_for_cpu(pdev
,
3723 ps_page_dma
->ps_page_dma
[0],
3725 PCI_DMA_FROMDEVICE
);
3726 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3727 KM_SKB_DATA_SOFTIRQ
);
3728 memcpy(skb
->tail
, vaddr
, l1
);
3729 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3730 pci_dma_sync_single_for_device(pdev
,
3731 ps_page_dma
->ps_page_dma
[0],
3732 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3739 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3740 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3742 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3743 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3744 ps_page_dma
->ps_page_dma
[j
] = 0;
3745 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3747 ps_page
->ps_page
[j
] = NULL
;
3749 skb
->data_len
+= length
;
3750 skb
->truesize
+= length
;
3754 e1000_rx_checksum(adapter
, staterr
,
3755 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
3756 skb
->protocol
= eth_type_trans(skb
, netdev
);
3758 if (likely(rx_desc
->wb
.upper
.header_status
&
3759 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
3760 adapter
->rx_hdr_split
++;
3761 #ifdef CONFIG_E1000_NAPI
3762 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3763 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3764 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3765 E1000_RXD_SPC_VLAN_MASK
);
3767 netif_receive_skb(skb
);
3769 #else /* CONFIG_E1000_NAPI */
3770 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3771 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3772 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3773 E1000_RXD_SPC_VLAN_MASK
);
3777 #endif /* CONFIG_E1000_NAPI */
3778 netdev
->last_rx
= jiffies
;
3781 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
3782 buffer_info
->skb
= NULL
;
3784 /* return some buffers to hardware, one at a time is too slow */
3785 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3786 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3790 /* use prefetched values */
3792 buffer_info
= next_buffer
;
3794 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3796 rx_ring
->next_to_clean
= i
;
3798 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3800 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3806 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3807 * @adapter: address of board private structure
3811 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3812 struct e1000_rx_ring
*rx_ring
,
3815 struct net_device
*netdev
= adapter
->netdev
;
3816 struct pci_dev
*pdev
= adapter
->pdev
;
3817 struct e1000_rx_desc
*rx_desc
;
3818 struct e1000_buffer
*buffer_info
;
3819 struct sk_buff
*skb
;
3821 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3823 i
= rx_ring
->next_to_use
;
3824 buffer_info
= &rx_ring
->buffer_info
[i
];
3826 while (cleaned_count
--) {
3827 if (!(skb
= buffer_info
->skb
))
3828 skb
= dev_alloc_skb(bufsz
);
3834 if (unlikely(!skb
)) {
3835 /* Better luck next round */
3836 adapter
->alloc_rx_buff_failed
++;
3840 /* Fix for errata 23, can't cross 64kB boundary */
3841 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3842 struct sk_buff
*oldskb
= skb
;
3843 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3844 "at %p\n", bufsz
, skb
->data
);
3845 /* Try again, without freeing the previous */
3846 skb
= dev_alloc_skb(bufsz
);
3847 /* Failed allocation, critical failure */
3849 dev_kfree_skb(oldskb
);
3853 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3856 dev_kfree_skb(oldskb
);
3857 break; /* while !buffer_info->skb */
3859 /* Use new allocation */
3860 dev_kfree_skb(oldskb
);
3863 /* Make buffer alignment 2 beyond a 16 byte boundary
3864 * this will result in a 16 byte aligned IP header after
3865 * the 14 byte MAC header is removed
3867 skb_reserve(skb
, NET_IP_ALIGN
);
3871 buffer_info
->skb
= skb
;
3872 buffer_info
->length
= adapter
->rx_buffer_len
;
3874 buffer_info
->dma
= pci_map_single(pdev
,
3876 adapter
->rx_buffer_len
,
3877 PCI_DMA_FROMDEVICE
);
3879 /* Fix for errata 23, can't cross 64kB boundary */
3880 if (!e1000_check_64k_bound(adapter
,
3881 (void *)(unsigned long)buffer_info
->dma
,
3882 adapter
->rx_buffer_len
)) {
3883 DPRINTK(RX_ERR
, ERR
,
3884 "dma align check failed: %u bytes at %p\n",
3885 adapter
->rx_buffer_len
,
3886 (void *)(unsigned long)buffer_info
->dma
);
3888 buffer_info
->skb
= NULL
;
3890 pci_unmap_single(pdev
, buffer_info
->dma
,
3891 adapter
->rx_buffer_len
,
3892 PCI_DMA_FROMDEVICE
);
3894 break; /* while !buffer_info->skb */
3896 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3897 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3899 if (unlikely(++i
== rx_ring
->count
))
3901 buffer_info
= &rx_ring
->buffer_info
[i
];
3904 if (likely(rx_ring
->next_to_use
!= i
)) {
3905 rx_ring
->next_to_use
= i
;
3906 if (unlikely(i
-- == 0))
3907 i
= (rx_ring
->count
- 1);
3909 /* Force memory writes to complete before letting h/w
3910 * know there are new descriptors to fetch. (Only
3911 * applicable for weak-ordered memory model archs,
3912 * such as IA-64). */
3914 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3919 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3920 * @adapter: address of board private structure
3924 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3925 struct e1000_rx_ring
*rx_ring
,
3928 struct net_device
*netdev
= adapter
->netdev
;
3929 struct pci_dev
*pdev
= adapter
->pdev
;
3930 union e1000_rx_desc_packet_split
*rx_desc
;
3931 struct e1000_buffer
*buffer_info
;
3932 struct e1000_ps_page
*ps_page
;
3933 struct e1000_ps_page_dma
*ps_page_dma
;
3934 struct sk_buff
*skb
;
3937 i
= rx_ring
->next_to_use
;
3938 buffer_info
= &rx_ring
->buffer_info
[i
];
3939 ps_page
= &rx_ring
->ps_page
[i
];
3940 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3942 while (cleaned_count
--) {
3943 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3945 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3946 if (j
< adapter
->rx_ps_pages
) {
3947 if (likely(!ps_page
->ps_page
[j
])) {
3948 ps_page
->ps_page
[j
] =
3949 alloc_page(GFP_ATOMIC
);
3950 if (unlikely(!ps_page
->ps_page
[j
])) {
3951 adapter
->alloc_rx_buff_failed
++;
3954 ps_page_dma
->ps_page_dma
[j
] =
3956 ps_page
->ps_page
[j
],
3958 PCI_DMA_FROMDEVICE
);
3960 /* Refresh the desc even if buffer_addrs didn't
3961 * change because each write-back erases
3964 rx_desc
->read
.buffer_addr
[j
+1] =
3965 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3967 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3970 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3972 if (unlikely(!skb
)) {
3973 adapter
->alloc_rx_buff_failed
++;
3977 /* Make buffer alignment 2 beyond a 16 byte boundary
3978 * this will result in a 16 byte aligned IP header after
3979 * the 14 byte MAC header is removed
3981 skb_reserve(skb
, NET_IP_ALIGN
);
3985 buffer_info
->skb
= skb
;
3986 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3987 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3988 adapter
->rx_ps_bsize0
,
3989 PCI_DMA_FROMDEVICE
);
3991 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3993 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
3994 buffer_info
= &rx_ring
->buffer_info
[i
];
3995 ps_page
= &rx_ring
->ps_page
[i
];
3996 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4000 if (likely(rx_ring
->next_to_use
!= i
)) {
4001 rx_ring
->next_to_use
= i
;
4002 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4004 /* Force memory writes to complete before letting h/w
4005 * know there are new descriptors to fetch. (Only
4006 * applicable for weak-ordered memory model archs,
4007 * such as IA-64). */
4009 /* Hardware increments by 16 bytes, but packet split
4010 * descriptors are 32 bytes...so we increment tail
4013 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4018 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4023 e1000_smartspeed(struct e1000_adapter
*adapter
)
4025 uint16_t phy_status
;
4028 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4029 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4032 if (adapter
->smartspeed
== 0) {
4033 /* If Master/Slave config fault is asserted twice,
4034 * we assume back-to-back */
4035 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4036 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4037 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4038 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4039 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4040 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4041 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4042 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4044 adapter
->smartspeed
++;
4045 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4046 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4048 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4049 MII_CR_RESTART_AUTO_NEG
);
4050 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4055 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4056 /* If still no link, perhaps using 2/3 pair cable */
4057 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4058 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4059 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4060 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4061 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4062 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4063 MII_CR_RESTART_AUTO_NEG
);
4064 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4067 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4068 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4069 adapter
->smartspeed
= 0;
4080 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4086 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4100 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4102 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4103 struct mii_ioctl_data
*data
= if_mii(ifr
);
4107 unsigned long flags
;
4109 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4114 data
->phy_id
= adapter
->hw
.phy_addr
;
4117 if (!capable(CAP_NET_ADMIN
))
4119 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4120 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4122 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4125 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4128 if (!capable(CAP_NET_ADMIN
))
4130 if (data
->reg_num
& ~(0x1F))
4132 mii_reg
= data
->val_in
;
4133 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4134 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4136 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4139 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4140 switch (data
->reg_num
) {
4142 if (mii_reg
& MII_CR_POWER_DOWN
)
4144 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4145 adapter
->hw
.autoneg
= 1;
4146 adapter
->hw
.autoneg_advertised
= 0x2F;
4149 spddplx
= SPEED_1000
;
4150 else if (mii_reg
& 0x2000)
4151 spddplx
= SPEED_100
;
4154 spddplx
+= (mii_reg
& 0x100)
4157 retval
= e1000_set_spd_dplx(adapter
,
4160 spin_unlock_irqrestore(
4161 &adapter
->stats_lock
,
4166 if (netif_running(adapter
->netdev
)) {
4167 e1000_down(adapter
);
4170 e1000_reset(adapter
);
4172 case M88E1000_PHY_SPEC_CTRL
:
4173 case M88E1000_EXT_PHY_SPEC_CTRL
:
4174 if (e1000_phy_reset(&adapter
->hw
)) {
4175 spin_unlock_irqrestore(
4176 &adapter
->stats_lock
, flags
);
4182 switch (data
->reg_num
) {
4184 if (mii_reg
& MII_CR_POWER_DOWN
)
4186 if (netif_running(adapter
->netdev
)) {
4187 e1000_down(adapter
);
4190 e1000_reset(adapter
);
4194 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4199 return E1000_SUCCESS
;
4203 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4205 struct e1000_adapter
*adapter
= hw
->back
;
4206 int ret_val
= pci_set_mwi(adapter
->pdev
);
4209 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4213 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4215 struct e1000_adapter
*adapter
= hw
->back
;
4217 pci_clear_mwi(adapter
->pdev
);
4221 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4223 struct e1000_adapter
*adapter
= hw
->back
;
4225 pci_read_config_word(adapter
->pdev
, reg
, value
);
4229 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4231 struct e1000_adapter
*adapter
= hw
->back
;
4233 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4237 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4243 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4249 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4251 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4252 uint32_t ctrl
, rctl
;
4254 e1000_irq_disable(adapter
);
4255 adapter
->vlgrp
= grp
;
4258 /* enable VLAN tag insert/strip */
4259 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4260 ctrl
|= E1000_CTRL_VME
;
4261 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4263 /* enable VLAN receive filtering */
4264 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4265 rctl
|= E1000_RCTL_VFE
;
4266 rctl
&= ~E1000_RCTL_CFIEN
;
4267 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4268 e1000_update_mng_vlan(adapter
);
4270 /* disable VLAN tag insert/strip */
4271 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4272 ctrl
&= ~E1000_CTRL_VME
;
4273 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4275 /* disable VLAN filtering */
4276 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4277 rctl
&= ~E1000_RCTL_VFE
;
4278 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4279 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4280 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4281 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4285 e1000_irq_enable(adapter
);
4289 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4291 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4292 uint32_t vfta
, index
;
4294 if ((adapter
->hw
.mng_cookie
.status
&
4295 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4296 (vid
== adapter
->mng_vlan_id
))
4298 /* add VID to filter table */
4299 index
= (vid
>> 5) & 0x7F;
4300 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4301 vfta
|= (1 << (vid
& 0x1F));
4302 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4306 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4308 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4309 uint32_t vfta
, index
;
4311 e1000_irq_disable(adapter
);
4314 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4316 e1000_irq_enable(adapter
);
4318 if ((adapter
->hw
.mng_cookie
.status
&
4319 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4320 (vid
== adapter
->mng_vlan_id
)) {
4321 /* release control to f/w */
4322 e1000_release_hw_control(adapter
);
4326 /* remove VID from filter table */
4327 index
= (vid
>> 5) & 0x7F;
4328 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4329 vfta
&= ~(1 << (vid
& 0x1F));
4330 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4334 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4336 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4338 if (adapter
->vlgrp
) {
4340 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4341 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4343 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4349 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4351 adapter
->hw
.autoneg
= 0;
4353 /* Fiber NICs only allow 1000 gbps Full duplex */
4354 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4355 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4356 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4361 case SPEED_10
+ DUPLEX_HALF
:
4362 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4364 case SPEED_10
+ DUPLEX_FULL
:
4365 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4367 case SPEED_100
+ DUPLEX_HALF
:
4368 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4370 case SPEED_100
+ DUPLEX_FULL
:
4371 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4373 case SPEED_1000
+ DUPLEX_FULL
:
4374 adapter
->hw
.autoneg
= 1;
4375 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4377 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4379 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4386 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4387 * bus we're on (PCI(X) vs. PCI-E)
4389 #define PCIE_CONFIG_SPACE_LEN 256
4390 #define PCI_CONFIG_SPACE_LEN 64
4392 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4394 struct pci_dev
*dev
= adapter
->pdev
;
4398 if (adapter
->hw
.mac_type
>= e1000_82571
)
4399 size
= PCIE_CONFIG_SPACE_LEN
;
4401 size
= PCI_CONFIG_SPACE_LEN
;
4403 WARN_ON(adapter
->config_space
!= NULL
);
4405 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4406 if (!adapter
->config_space
) {
4407 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4410 for (i
= 0; i
< (size
/ 4); i
++)
4411 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4416 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4418 struct pci_dev
*dev
= adapter
->pdev
;
4422 if (adapter
->config_space
== NULL
)
4425 if (adapter
->hw
.mac_type
>= e1000_82571
)
4426 size
= PCIE_CONFIG_SPACE_LEN
;
4428 size
= PCI_CONFIG_SPACE_LEN
;
4429 for (i
= 0; i
< (size
/ 4); i
++)
4430 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4431 kfree(adapter
->config_space
);
4432 adapter
->config_space
= NULL
;
4435 #endif /* CONFIG_PM */
4438 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4440 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4441 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4442 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4443 uint32_t wufc
= adapter
->wol
;
4446 netif_device_detach(netdev
);
4448 if (netif_running(netdev
))
4449 e1000_down(adapter
);
4452 /* Implement our own version of pci_save_state(pdev) because pci-
4453 * express adapters have 256-byte config spaces. */
4454 retval
= e1000_pci_save_state(adapter
);
4459 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4460 if (status
& E1000_STATUS_LU
)
4461 wufc
&= ~E1000_WUFC_LNKC
;
4464 e1000_setup_rctl(adapter
);
4465 e1000_set_multi(netdev
);
4467 /* turn on all-multi mode if wake on multicast is enabled */
4468 if (adapter
->wol
& E1000_WUFC_MC
) {
4469 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4470 rctl
|= E1000_RCTL_MPE
;
4471 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4474 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4475 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4476 /* advertise wake from D3Cold */
4477 #define E1000_CTRL_ADVD3WUC 0x00100000
4478 /* phy power management enable */
4479 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4480 ctrl
|= E1000_CTRL_ADVD3WUC
|
4481 E1000_CTRL_EN_PHY_PWR_MGMT
;
4482 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4485 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4486 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4487 /* keep the laser running in D3 */
4488 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4489 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4490 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4493 /* Allow time for pending master requests to run */
4494 e1000_disable_pciex_master(&adapter
->hw
);
4496 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4497 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4498 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4499 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4501 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4502 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4503 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4504 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4507 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4508 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4509 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4510 if (manc
& E1000_MANC_SMBUS_EN
) {
4511 manc
|= E1000_MANC_ARP_EN
;
4512 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4513 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4514 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4518 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4519 * would have already happened in close and is redundant. */
4520 e1000_release_hw_control(adapter
);
4522 pci_disable_device(pdev
);
4524 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4531 e1000_resume(struct pci_dev
*pdev
)
4533 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4534 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4535 uint32_t manc
, ret_val
;
4537 pci_set_power_state(pdev
, PCI_D0
);
4538 e1000_pci_restore_state(adapter
);
4539 ret_val
= pci_enable_device(pdev
);
4540 pci_set_master(pdev
);
4542 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4543 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4545 e1000_reset(adapter
);
4546 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4548 if (netif_running(netdev
))
4551 netif_device_attach(netdev
);
4553 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4554 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4555 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4556 manc
&= ~(E1000_MANC_ARP_EN
);
4557 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4560 /* If the controller is 82573 and f/w is AMT, do not set
4561 * DRV_LOAD until the interface is up. For all other cases,
4562 * let the f/w know that the h/w is now under the control
4564 if (adapter
->hw
.mac_type
!= e1000_82573
||
4565 !e1000_check_mng_mode(&adapter
->hw
))
4566 e1000_get_hw_control(adapter
);
4572 static void e1000_shutdown(struct pci_dev
*pdev
)
4574 e1000_suspend(pdev
, PMSG_SUSPEND
);
4577 #ifdef CONFIG_NET_POLL_CONTROLLER
4579 * Polling 'interrupt' - used by things like netconsole to send skbs
4580 * without having to re-enable interrupts. It's not called while
4581 * the interrupt routine is executing.
4584 e1000_netpoll(struct net_device
*netdev
)
4586 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4587 disable_irq(adapter
->pdev
->irq
);
4588 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4589 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4590 #ifndef CONFIG_E1000_NAPI
4591 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4593 enable_irq(adapter
->pdev
->irq
);