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_82547_tx_fifo_stall(unsigned long data
);
137 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
138 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
139 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
140 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
141 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
142 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
143 struct e1000_tx_ring
*tx_ring
);
144 #ifdef CONFIG_E1000_NAPI
145 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
146 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
147 struct e1000_rx_ring
*rx_ring
,
148 int *work_done
, int work_to_do
);
149 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
150 struct e1000_rx_ring
*rx_ring
,
151 int *work_done
, int work_to_do
);
153 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
154 struct e1000_rx_ring
*rx_ring
);
155 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
156 struct e1000_rx_ring
*rx_ring
);
158 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
159 struct e1000_rx_ring
*rx_ring
,
161 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
162 struct e1000_rx_ring
*rx_ring
,
164 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
165 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
167 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
168 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
169 static void e1000_tx_timeout(struct net_device
*dev
);
170 static void e1000_reset_task(struct net_device
*dev
);
171 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
172 static int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
173 struct sk_buff
*skb
);
175 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
176 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
177 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
178 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
180 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
182 static int e1000_resume(struct pci_dev
*pdev
);
184 static void e1000_shutdown(struct pci_dev
*pdev
);
186 #ifdef CONFIG_NET_POLL_CONTROLLER
187 /* for netdump / net console */
188 static void e1000_netpoll (struct net_device
*netdev
);
191 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
,
192 pci_channel_state_t state
);
193 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
);
194 static void e1000_io_resume(struct pci_dev
*pdev
);
196 static struct pci_error_handlers e1000_err_handler
= {
197 .error_detected
= e1000_io_error_detected
,
198 .slot_reset
= e1000_io_slot_reset
,
199 .resume
= e1000_io_resume
,
202 static struct pci_driver e1000_driver
= {
203 .name
= e1000_driver_name
,
204 .id_table
= e1000_pci_tbl
,
205 .probe
= e1000_probe
,
206 .remove
= __devexit_p(e1000_remove
),
207 /* Power Managment Hooks */
208 .suspend
= e1000_suspend
,
210 .resume
= e1000_resume
,
212 .shutdown
= e1000_shutdown
,
213 .err_handler
= &e1000_err_handler
216 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
217 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
218 MODULE_LICENSE("GPL");
219 MODULE_VERSION(DRV_VERSION
);
221 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
222 module_param(debug
, int, 0);
223 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
226 * e1000_init_module - Driver Registration Routine
228 * e1000_init_module is the first routine called when the driver is
229 * loaded. All it does is register with the PCI subsystem.
233 e1000_init_module(void)
236 printk(KERN_INFO
"%s - version %s\n",
237 e1000_driver_string
, e1000_driver_version
);
239 printk(KERN_INFO
"%s\n", e1000_copyright
);
241 ret
= pci_module_init(&e1000_driver
);
246 module_init(e1000_init_module
);
249 * e1000_exit_module - Driver Exit Cleanup Routine
251 * e1000_exit_module is called just before the driver is removed
256 e1000_exit_module(void)
258 pci_unregister_driver(&e1000_driver
);
261 module_exit(e1000_exit_module
);
263 static int e1000_request_irq(struct e1000_adapter
*adapter
)
265 struct net_device
*netdev
= adapter
->netdev
;
268 flags
= SA_SHIRQ
| SA_SAMPLE_RANDOM
;
269 #ifdef CONFIG_PCI_MSI
270 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
271 adapter
->have_msi
= TRUE
;
272 if ((err
= pci_enable_msi(adapter
->pdev
))) {
274 "Unable to allocate MSI interrupt Error: %d\n", err
);
275 adapter
->have_msi
= FALSE
;
278 if (adapter
->have_msi
)
281 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
, flags
,
282 netdev
->name
, netdev
)))
284 "Unable to allocate interrupt Error: %d\n", err
);
289 static void e1000_free_irq(struct e1000_adapter
*adapter
)
291 struct net_device
*netdev
= adapter
->netdev
;
293 free_irq(adapter
->pdev
->irq
, netdev
);
295 #ifdef CONFIG_PCI_MSI
296 if (adapter
->have_msi
)
297 pci_disable_msi(adapter
->pdev
);
302 * e1000_irq_disable - Mask off interrupt generation on the NIC
303 * @adapter: board private structure
307 e1000_irq_disable(struct e1000_adapter
*adapter
)
309 atomic_inc(&adapter
->irq_sem
);
310 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
311 E1000_WRITE_FLUSH(&adapter
->hw
);
312 synchronize_irq(adapter
->pdev
->irq
);
316 * e1000_irq_enable - Enable default interrupt generation settings
317 * @adapter: board private structure
321 e1000_irq_enable(struct e1000_adapter
*adapter
)
323 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
324 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
325 E1000_WRITE_FLUSH(&adapter
->hw
);
330 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
332 struct net_device
*netdev
= adapter
->netdev
;
333 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
334 uint16_t old_vid
= adapter
->mng_vlan_id
;
335 if (adapter
->vlgrp
) {
336 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
337 if (adapter
->hw
.mng_cookie
.status
&
338 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
339 e1000_vlan_rx_add_vid(netdev
, vid
);
340 adapter
->mng_vlan_id
= vid
;
342 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
344 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
346 !adapter
->vlgrp
->vlan_devices
[old_vid
])
347 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
349 adapter
->mng_vlan_id
= vid
;
354 * e1000_release_hw_control - release control of the h/w to f/w
355 * @adapter: address of board private structure
357 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
358 * For ASF and Pass Through versions of f/w this means that the
359 * driver is no longer loaded. For AMT version (only with 82573) i
360 * of the f/w this means that the netowrk i/f is closed.
365 e1000_release_hw_control(struct e1000_adapter
*adapter
)
370 /* Let firmware taken over control of h/w */
371 switch (adapter
->hw
.mac_type
) {
374 case e1000_80003es2lan
:
375 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
376 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
377 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
380 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
381 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
382 swsm
& ~E1000_SWSM_DRV_LOAD
);
389 * e1000_get_hw_control - get control of the h/w from f/w
390 * @adapter: address of board private structure
392 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
393 * For ASF and Pass Through versions of f/w this means that
394 * the driver is loaded. For AMT version (only with 82573)
395 * of the f/w this means that the netowrk i/f is open.
400 e1000_get_hw_control(struct e1000_adapter
*adapter
)
404 /* Let firmware know the driver has taken over */
405 switch (adapter
->hw
.mac_type
) {
408 case e1000_80003es2lan
:
409 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
410 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
411 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
414 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
415 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
416 swsm
| E1000_SWSM_DRV_LOAD
);
424 e1000_up(struct e1000_adapter
*adapter
)
426 struct net_device
*netdev
= adapter
->netdev
;
429 /* hardware has been reset, we need to reload some things */
431 e1000_set_multi(netdev
);
433 e1000_restore_vlan(adapter
);
435 e1000_configure_tx(adapter
);
436 e1000_setup_rctl(adapter
);
437 e1000_configure_rx(adapter
);
438 /* call E1000_DESC_UNUSED which always leaves
439 * at least 1 descriptor unused to make sure
440 * next_to_use != next_to_clean */
441 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
442 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
443 adapter
->alloc_rx_buf(adapter
, ring
,
444 E1000_DESC_UNUSED(ring
));
447 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
449 mod_timer(&adapter
->watchdog_timer
, jiffies
);
451 #ifdef CONFIG_E1000_NAPI
452 netif_poll_enable(netdev
);
454 e1000_irq_enable(adapter
);
460 * e1000_power_up_phy - restore link in case the phy was powered down
461 * @adapter: address of board private structure
463 * The phy may be powered down to save power and turn off link when the
464 * driver is unloaded and wake on lan is not enabled (among others)
465 * *** this routine MUST be followed by a call to e1000_reset ***
469 static void e1000_power_up_phy(struct e1000_adapter
*adapter
)
471 uint16_t mii_reg
= 0;
473 /* Just clear the power down bit to wake the phy back up */
474 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
475 /* according to the manual, the phy will retain its
476 * settings across a power-down/up cycle */
477 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
478 mii_reg
&= ~MII_CR_POWER_DOWN
;
479 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
483 static void e1000_power_down_phy(struct e1000_adapter
*adapter
)
485 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
486 e1000_check_mng_mode(&adapter
->hw
);
487 /* Power down the PHY so no link is implied when interface is down
488 * The PHY cannot be powered down if any of the following is TRUE
491 * (c) SoL/IDER session is active */
492 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
493 adapter
->hw
.media_type
== e1000_media_type_copper
&&
494 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
496 !e1000_check_phy_reset_block(&adapter
->hw
)) {
497 uint16_t mii_reg
= 0;
498 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
499 mii_reg
|= MII_CR_POWER_DOWN
;
500 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
506 e1000_down(struct e1000_adapter
*adapter
)
508 struct net_device
*netdev
= adapter
->netdev
;
510 e1000_irq_disable(adapter
);
512 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
513 del_timer_sync(&adapter
->watchdog_timer
);
514 del_timer_sync(&adapter
->phy_info_timer
);
516 #ifdef CONFIG_E1000_NAPI
517 netif_poll_disable(netdev
);
519 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
520 adapter
->link_speed
= 0;
521 adapter
->link_duplex
= 0;
522 netif_carrier_off(netdev
);
523 netif_stop_queue(netdev
);
525 e1000_reset(adapter
);
526 e1000_clean_all_tx_rings(adapter
);
527 e1000_clean_all_rx_rings(adapter
);
531 e1000_reinit_locked(struct e1000_adapter
*adapter
)
533 WARN_ON(in_interrupt());
534 while (test_and_set_bit(__E1000_RESETTING
, &adapter
->flags
))
538 clear_bit(__E1000_RESETTING
, &adapter
->flags
);
542 e1000_reset(struct e1000_adapter
*adapter
)
545 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
547 /* Repartition Pba for greater than 9k mtu
548 * To take effect CTRL.RST is required.
551 switch (adapter
->hw
.mac_type
) {
553 case e1000_82547_rev_2
:
558 case e1000_80003es2lan
:
569 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
570 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
571 pba
-= 8; /* allocate more FIFO for Tx */
574 if (adapter
->hw
.mac_type
== e1000_82547
) {
575 adapter
->tx_fifo_head
= 0;
576 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
577 adapter
->tx_fifo_size
=
578 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
579 atomic_set(&adapter
->tx_fifo_stall
, 0);
582 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
584 /* flow control settings */
585 /* Set the FC high water mark to 90% of the FIFO size.
586 * Required to clear last 3 LSB */
587 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
589 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
590 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
591 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
592 adapter
->hw
.fc_pause_time
= 0xFFFF;
594 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
595 adapter
->hw
.fc_send_xon
= 1;
596 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
598 /* Allow time for pending master requests to run */
599 e1000_reset_hw(&adapter
->hw
);
600 if (adapter
->hw
.mac_type
>= e1000_82544
)
601 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
602 if (e1000_init_hw(&adapter
->hw
))
603 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
604 e1000_update_mng_vlan(adapter
);
605 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
606 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
608 e1000_reset_adaptive(&adapter
->hw
);
609 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
611 if (!adapter
->smart_power_down
&&
612 (adapter
->hw
.mac_type
== e1000_82571
||
613 adapter
->hw
.mac_type
== e1000_82572
)) {
614 uint16_t phy_data
= 0;
615 /* speed up time to link by disabling smart power down, ignore
616 * the return value of this function because there is nothing
617 * different we would do if it failed */
618 e1000_read_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
620 phy_data
&= ~IGP02E1000_PM_SPD
;
621 e1000_write_phy_reg(&adapter
->hw
, IGP02E1000_PHY_POWER_MGMT
,
625 if (adapter
->en_mng_pt
) {
626 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
627 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
628 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
633 * e1000_probe - Device Initialization Routine
634 * @pdev: PCI device information struct
635 * @ent: entry in e1000_pci_tbl
637 * Returns 0 on success, negative on failure
639 * e1000_probe initializes an adapter identified by a pci_dev structure.
640 * The OS initialization, configuring of the adapter private structure,
641 * and a hardware reset occur.
645 e1000_probe(struct pci_dev
*pdev
,
646 const struct pci_device_id
*ent
)
648 struct net_device
*netdev
;
649 struct e1000_adapter
*adapter
;
650 unsigned long mmio_start
, mmio_len
;
652 static int cards_found
= 0;
653 static int e1000_ksp3_port_a
= 0; /* global ksp3 port a indication */
654 int i
, err
, pci_using_dac
;
655 uint16_t eeprom_data
;
656 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
657 if ((err
= pci_enable_device(pdev
)))
660 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
663 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
664 E1000_ERR("No usable DMA configuration, aborting\n");
670 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
673 pci_set_master(pdev
);
675 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
678 goto err_alloc_etherdev
;
681 SET_MODULE_OWNER(netdev
);
682 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
684 pci_set_drvdata(pdev
, netdev
);
685 adapter
= netdev_priv(netdev
);
686 adapter
->netdev
= netdev
;
687 adapter
->pdev
= pdev
;
688 adapter
->hw
.back
= adapter
;
689 adapter
->msg_enable
= (1 << debug
) - 1;
691 mmio_start
= pci_resource_start(pdev
, BAR_0
);
692 mmio_len
= pci_resource_len(pdev
, BAR_0
);
694 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
695 if (!adapter
->hw
.hw_addr
) {
700 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
701 if (pci_resource_len(pdev
, i
) == 0)
703 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
704 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
709 netdev
->open
= &e1000_open
;
710 netdev
->stop
= &e1000_close
;
711 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
712 netdev
->get_stats
= &e1000_get_stats
;
713 netdev
->set_multicast_list
= &e1000_set_multi
;
714 netdev
->set_mac_address
= &e1000_set_mac
;
715 netdev
->change_mtu
= &e1000_change_mtu
;
716 netdev
->do_ioctl
= &e1000_ioctl
;
717 e1000_set_ethtool_ops(netdev
);
718 netdev
->tx_timeout
= &e1000_tx_timeout
;
719 netdev
->watchdog_timeo
= 5 * HZ
;
720 #ifdef CONFIG_E1000_NAPI
721 netdev
->poll
= &e1000_clean
;
724 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
725 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
726 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
727 #ifdef CONFIG_NET_POLL_CONTROLLER
728 netdev
->poll_controller
= e1000_netpoll
;
730 strcpy(netdev
->name
, pci_name(pdev
));
732 netdev
->mem_start
= mmio_start
;
733 netdev
->mem_end
= mmio_start
+ mmio_len
;
734 netdev
->base_addr
= adapter
->hw
.io_base
;
736 adapter
->bd_number
= cards_found
;
738 /* setup the private structure */
740 if ((err
= e1000_sw_init(adapter
)))
743 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
744 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
746 /* if ksp3, indicate if it's port a being setup */
747 if (pdev
->device
== E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
&&
748 e1000_ksp3_port_a
== 0)
749 adapter
->ksp3_port_a
= 1;
751 /* Reset for multiple KP3 adapters */
752 if (e1000_ksp3_port_a
== 4)
753 e1000_ksp3_port_a
= 0;
755 if (adapter
->hw
.mac_type
>= e1000_82543
) {
756 netdev
->features
= NETIF_F_SG
|
760 NETIF_F_HW_VLAN_FILTER
;
764 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
765 (adapter
->hw
.mac_type
!= e1000_82547
))
766 netdev
->features
|= NETIF_F_TSO
;
768 #ifdef NETIF_F_TSO_IPV6
769 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
770 netdev
->features
|= NETIF_F_TSO_IPV6
;
774 netdev
->features
|= NETIF_F_HIGHDMA
;
776 /* hard_start_xmit is safe against parallel locking */
777 netdev
->features
|= NETIF_F_LLTX
;
779 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
781 /* before reading the EEPROM, reset the controller to
782 * put the device in a known good starting state */
784 e1000_reset_hw(&adapter
->hw
);
786 /* make sure the EEPROM is good */
788 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
789 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
794 /* copy the MAC address out of the EEPROM */
796 if (e1000_read_mac_addr(&adapter
->hw
))
797 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
798 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
799 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
801 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
802 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
807 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
809 e1000_get_bus_info(&adapter
->hw
);
811 init_timer(&adapter
->tx_fifo_stall_timer
);
812 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
813 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
815 init_timer(&adapter
->watchdog_timer
);
816 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
817 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
819 init_timer(&adapter
->phy_info_timer
);
820 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
821 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
823 INIT_WORK(&adapter
->reset_task
,
824 (void (*)(void *))e1000_reset_task
, netdev
);
826 /* we're going to reset, so assume we have no link for now */
828 netif_carrier_off(netdev
);
829 netif_stop_queue(netdev
);
831 e1000_check_options(adapter
);
833 /* Initial Wake on LAN setting
834 * If APM wake is enabled in the EEPROM,
835 * enable the ACPI Magic Packet filter
838 switch (adapter
->hw
.mac_type
) {
839 case e1000_82542_rev2_0
:
840 case e1000_82542_rev2_1
:
844 e1000_read_eeprom(&adapter
->hw
,
845 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
846 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
849 case e1000_82546_rev_3
:
851 case e1000_80003es2lan
:
852 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
853 e1000_read_eeprom(&adapter
->hw
,
854 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
859 e1000_read_eeprom(&adapter
->hw
,
860 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
863 if (eeprom_data
& eeprom_apme_mask
)
864 adapter
->wol
|= E1000_WUFC_MAG
;
866 /* print bus type/speed/width info */
868 struct e1000_hw
*hw
= &adapter
->hw
;
869 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
870 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
871 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
872 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
873 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
874 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
875 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
876 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
877 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
878 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
879 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
883 for (i
= 0; i
< 6; i
++)
884 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
886 /* reset the hardware with the new settings */
887 e1000_reset(adapter
);
889 /* If the controller is 82573 and f/w is AMT, do not set
890 * DRV_LOAD until the interface is up. For all other cases,
891 * let the f/w know that the h/w is now under the control
893 if (adapter
->hw
.mac_type
!= e1000_82573
||
894 !e1000_check_mng_mode(&adapter
->hw
))
895 e1000_get_hw_control(adapter
);
897 strcpy(netdev
->name
, "eth%d");
898 if ((err
= register_netdev(netdev
)))
901 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
909 iounmap(adapter
->hw
.hw_addr
);
913 pci_release_regions(pdev
);
918 * e1000_remove - Device Removal Routine
919 * @pdev: PCI device information struct
921 * e1000_remove is called by the PCI subsystem to alert the driver
922 * that it should release a PCI device. The could be caused by a
923 * Hot-Plug event, or because the driver is going to be removed from
927 static void __devexit
928 e1000_remove(struct pci_dev
*pdev
)
930 struct net_device
*netdev
= pci_get_drvdata(pdev
);
931 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
933 #ifdef CONFIG_E1000_NAPI
937 flush_scheduled_work();
939 if (adapter
->hw
.mac_type
>= e1000_82540
&&
940 adapter
->hw
.media_type
== e1000_media_type_copper
) {
941 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
942 if (manc
& E1000_MANC_SMBUS_EN
) {
943 manc
|= E1000_MANC_ARP_EN
;
944 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
948 /* Release control of h/w to f/w. If f/w is AMT enabled, this
949 * would have already happened in close and is redundant. */
950 e1000_release_hw_control(adapter
);
952 unregister_netdev(netdev
);
953 #ifdef CONFIG_E1000_NAPI
954 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
955 dev_put(&adapter
->polling_netdev
[i
]);
958 if (!e1000_check_phy_reset_block(&adapter
->hw
))
959 e1000_phy_hw_reset(&adapter
->hw
);
961 kfree(adapter
->tx_ring
);
962 kfree(adapter
->rx_ring
);
963 #ifdef CONFIG_E1000_NAPI
964 kfree(adapter
->polling_netdev
);
967 iounmap(adapter
->hw
.hw_addr
);
968 pci_release_regions(pdev
);
972 pci_disable_device(pdev
);
976 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
977 * @adapter: board private structure to initialize
979 * e1000_sw_init initializes the Adapter private data structure.
980 * Fields are initialized based on PCI device information and
981 * OS network device settings (MTU size).
985 e1000_sw_init(struct e1000_adapter
*adapter
)
987 struct e1000_hw
*hw
= &adapter
->hw
;
988 struct net_device
*netdev
= adapter
->netdev
;
989 struct pci_dev
*pdev
= adapter
->pdev
;
990 #ifdef CONFIG_E1000_NAPI
994 /* PCI config space info */
996 hw
->vendor_id
= pdev
->vendor
;
997 hw
->device_id
= pdev
->device
;
998 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
999 hw
->subsystem_id
= pdev
->subsystem_device
;
1001 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1003 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1005 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_FRAME_SIZE
;
1006 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_128
;
1007 hw
->max_frame_size
= netdev
->mtu
+
1008 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1009 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1011 /* identify the MAC */
1013 if (e1000_set_mac_type(hw
)) {
1014 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1018 /* initialize eeprom parameters */
1020 if (e1000_init_eeprom_params(hw
)) {
1021 E1000_ERR("EEPROM initialization failed\n");
1025 switch (hw
->mac_type
) {
1030 case e1000_82541_rev_2
:
1031 case e1000_82547_rev_2
:
1032 hw
->phy_init_script
= 1;
1036 e1000_set_media_type(hw
);
1038 hw
->wait_autoneg_complete
= FALSE
;
1039 hw
->tbi_compatibility_en
= TRUE
;
1040 hw
->adaptive_ifs
= TRUE
;
1042 /* Copper options */
1044 if (hw
->media_type
== e1000_media_type_copper
) {
1045 hw
->mdix
= AUTO_ALL_MODES
;
1046 hw
->disable_polarity_correction
= FALSE
;
1047 hw
->master_slave
= E1000_MASTER_SLAVE
;
1050 adapter
->num_tx_queues
= 1;
1051 adapter
->num_rx_queues
= 1;
1053 if (e1000_alloc_queues(adapter
)) {
1054 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1058 #ifdef CONFIG_E1000_NAPI
1059 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1060 adapter
->polling_netdev
[i
].priv
= adapter
;
1061 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1062 adapter
->polling_netdev
[i
].weight
= 64;
1063 dev_hold(&adapter
->polling_netdev
[i
]);
1064 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1066 spin_lock_init(&adapter
->tx_queue_lock
);
1069 atomic_set(&adapter
->irq_sem
, 1);
1070 spin_lock_init(&adapter
->stats_lock
);
1076 * e1000_alloc_queues - Allocate memory for all rings
1077 * @adapter: board private structure to initialize
1079 * We allocate one ring per queue at run-time since we don't know the
1080 * number of queues at compile-time. The polling_netdev array is
1081 * intended for Multiqueue, but should work fine with a single queue.
1084 static int __devinit
1085 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1089 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1090 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1091 if (!adapter
->tx_ring
)
1093 memset(adapter
->tx_ring
, 0, size
);
1095 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1096 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1097 if (!adapter
->rx_ring
) {
1098 kfree(adapter
->tx_ring
);
1101 memset(adapter
->rx_ring
, 0, size
);
1103 #ifdef CONFIG_E1000_NAPI
1104 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1105 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1106 if (!adapter
->polling_netdev
) {
1107 kfree(adapter
->tx_ring
);
1108 kfree(adapter
->rx_ring
);
1111 memset(adapter
->polling_netdev
, 0, size
);
1114 return E1000_SUCCESS
;
1118 * e1000_open - Called when a network interface is made active
1119 * @netdev: network interface device structure
1121 * Returns 0 on success, negative value on failure
1123 * The open entry point is called when a network interface is made
1124 * active by the system (IFF_UP). At this point all resources needed
1125 * for transmit and receive operations are allocated, the interrupt
1126 * handler is registered with the OS, the watchdog timer is started,
1127 * and the stack is notified that the interface is ready.
1131 e1000_open(struct net_device
*netdev
)
1133 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1136 /* disallow open during test */
1137 if (test_bit(__E1000_DRIVER_TESTING
, &adapter
->flags
))
1140 /* allocate transmit descriptors */
1142 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1145 /* allocate receive descriptors */
1147 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1150 err
= e1000_request_irq(adapter
);
1154 e1000_power_up_phy(adapter
);
1156 if ((err
= e1000_up(adapter
)))
1158 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1159 if ((adapter
->hw
.mng_cookie
.status
&
1160 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1161 e1000_update_mng_vlan(adapter
);
1164 /* If AMT is enabled, let the firmware know that the network
1165 * interface is now open */
1166 if (adapter
->hw
.mac_type
== e1000_82573
&&
1167 e1000_check_mng_mode(&adapter
->hw
))
1168 e1000_get_hw_control(adapter
);
1170 return E1000_SUCCESS
;
1173 e1000_free_all_rx_resources(adapter
);
1175 e1000_free_all_tx_resources(adapter
);
1177 e1000_reset(adapter
);
1183 * e1000_close - Disables a network interface
1184 * @netdev: network interface device structure
1186 * Returns 0, this is not allowed to fail
1188 * The close entry point is called when an interface is de-activated
1189 * by the OS. The hardware is still under the drivers control, but
1190 * needs to be disabled. A global MAC reset is issued to stop the
1191 * hardware, and all transmit and receive resources are freed.
1195 e1000_close(struct net_device
*netdev
)
1197 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1199 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
1200 e1000_down(adapter
);
1201 e1000_power_down_phy(adapter
);
1202 e1000_free_irq(adapter
);
1204 e1000_free_all_tx_resources(adapter
);
1205 e1000_free_all_rx_resources(adapter
);
1207 if ((adapter
->hw
.mng_cookie
.status
&
1208 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1209 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1212 /* If AMT is enabled, let the firmware know that the network
1213 * interface is now closed */
1214 if (adapter
->hw
.mac_type
== e1000_82573
&&
1215 e1000_check_mng_mode(&adapter
->hw
))
1216 e1000_release_hw_control(adapter
);
1222 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1223 * @adapter: address of board private structure
1224 * @start: address of beginning of memory
1225 * @len: length of memory
1228 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1229 void *start
, unsigned long len
)
1231 unsigned long begin
= (unsigned long) start
;
1232 unsigned long end
= begin
+ len
;
1234 /* First rev 82545 and 82546 need to not allow any memory
1235 * write location to cross 64k boundary due to errata 23 */
1236 if (adapter
->hw
.mac_type
== e1000_82545
||
1237 adapter
->hw
.mac_type
== e1000_82546
) {
1238 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1245 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1246 * @adapter: board private structure
1247 * @txdr: tx descriptor ring (for a specific queue) to setup
1249 * Return 0 on success, negative on failure
1253 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1254 struct e1000_tx_ring
*txdr
)
1256 struct pci_dev
*pdev
= adapter
->pdev
;
1259 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1261 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1262 if (!txdr
->buffer_info
) {
1264 "Unable to allocate memory for the transmit descriptor ring\n");
1267 memset(txdr
->buffer_info
, 0, size
);
1269 /* round up to nearest 4K */
1271 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1272 E1000_ROUNDUP(txdr
->size
, 4096);
1274 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1277 vfree(txdr
->buffer_info
);
1279 "Unable to allocate memory for the transmit descriptor ring\n");
1283 /* Fix for errata 23, can't cross 64kB boundary */
1284 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1285 void *olddesc
= txdr
->desc
;
1286 dma_addr_t olddma
= txdr
->dma
;
1287 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1288 "at %p\n", txdr
->size
, txdr
->desc
);
1289 /* Try again, without freeing the previous */
1290 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1291 /* Failed allocation, critical failure */
1293 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1294 goto setup_tx_desc_die
;
1297 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1299 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1301 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1303 "Unable to allocate aligned memory "
1304 "for the transmit descriptor ring\n");
1305 vfree(txdr
->buffer_info
);
1308 /* Free old allocation, new allocation was successful */
1309 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1312 memset(txdr
->desc
, 0, txdr
->size
);
1314 txdr
->next_to_use
= 0;
1315 txdr
->next_to_clean
= 0;
1316 spin_lock_init(&txdr
->tx_lock
);
1322 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1323 * (Descriptors) for all queues
1324 * @adapter: board private structure
1326 * If this function returns with an error, then it's possible one or
1327 * more of the rings is populated (while the rest are not). It is the
1328 * callers duty to clean those orphaned rings.
1330 * Return 0 on success, negative on failure
1334 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1338 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1339 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1342 "Allocation for Tx Queue %u failed\n", i
);
1351 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1352 * @adapter: board private structure
1354 * Configure the Tx unit of the MAC after a reset.
1358 e1000_configure_tx(struct e1000_adapter
*adapter
)
1361 struct e1000_hw
*hw
= &adapter
->hw
;
1362 uint32_t tdlen
, tctl
, tipg
, tarc
;
1363 uint32_t ipgr1
, ipgr2
;
1365 /* Setup the HW Tx Head and Tail descriptor pointers */
1367 switch (adapter
->num_tx_queues
) {
1370 tdba
= adapter
->tx_ring
[0].dma
;
1371 tdlen
= adapter
->tx_ring
[0].count
*
1372 sizeof(struct e1000_tx_desc
);
1373 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1374 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1375 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1376 E1000_WRITE_REG(hw
, TDT
, 0);
1377 E1000_WRITE_REG(hw
, TDH
, 0);
1378 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1379 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1383 /* Set the default values for the Tx Inter Packet Gap timer */
1385 if (hw
->media_type
== e1000_media_type_fiber
||
1386 hw
->media_type
== e1000_media_type_internal_serdes
)
1387 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1389 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1391 switch (hw
->mac_type
) {
1392 case e1000_82542_rev2_0
:
1393 case e1000_82542_rev2_1
:
1394 tipg
= DEFAULT_82542_TIPG_IPGT
;
1395 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1396 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1398 case e1000_80003es2lan
:
1399 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1400 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1403 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1404 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1407 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1408 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1409 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1411 /* Set the Tx Interrupt Delay register */
1413 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1414 if (hw
->mac_type
>= e1000_82540
)
1415 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1417 /* Program the Transmit Control Register */
1419 tctl
= E1000_READ_REG(hw
, TCTL
);
1421 tctl
&= ~E1000_TCTL_CT
;
1422 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1423 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1426 /* disable Multiple Reads for debugging */
1427 tctl
&= ~E1000_TCTL_MULR
;
1430 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1431 tarc
= E1000_READ_REG(hw
, TARC0
);
1432 tarc
|= ((1 << 25) | (1 << 21));
1433 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1434 tarc
= E1000_READ_REG(hw
, TARC1
);
1436 if (tctl
& E1000_TCTL_MULR
)
1440 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1441 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1442 tarc
= E1000_READ_REG(hw
, TARC0
);
1444 if (hw
->media_type
== e1000_media_type_internal_serdes
)
1446 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1447 tarc
= E1000_READ_REG(hw
, TARC1
);
1449 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1452 e1000_config_collision_dist(hw
);
1454 /* Setup Transmit Descriptor Settings for eop descriptor */
1455 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1458 if (hw
->mac_type
< e1000_82543
)
1459 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1461 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1463 /* Cache if we're 82544 running in PCI-X because we'll
1464 * need this to apply a workaround later in the send path. */
1465 if (hw
->mac_type
== e1000_82544
&&
1466 hw
->bus_type
== e1000_bus_type_pcix
)
1467 adapter
->pcix_82544
= 1;
1469 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1474 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1475 * @adapter: board private structure
1476 * @rxdr: rx descriptor ring (for a specific queue) to setup
1478 * Returns 0 on success, negative on failure
1482 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1483 struct e1000_rx_ring
*rxdr
)
1485 struct pci_dev
*pdev
= adapter
->pdev
;
1488 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1489 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1490 if (!rxdr
->buffer_info
) {
1492 "Unable to allocate memory for the receive descriptor ring\n");
1495 memset(rxdr
->buffer_info
, 0, size
);
1497 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1498 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1499 if (!rxdr
->ps_page
) {
1500 vfree(rxdr
->buffer_info
);
1502 "Unable to allocate memory for the receive descriptor ring\n");
1505 memset(rxdr
->ps_page
, 0, size
);
1507 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1508 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1509 if (!rxdr
->ps_page_dma
) {
1510 vfree(rxdr
->buffer_info
);
1511 kfree(rxdr
->ps_page
);
1513 "Unable to allocate memory for the receive descriptor ring\n");
1516 memset(rxdr
->ps_page_dma
, 0, size
);
1518 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1519 desc_len
= sizeof(struct e1000_rx_desc
);
1521 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1523 /* Round up to nearest 4K */
1525 rxdr
->size
= rxdr
->count
* desc_len
;
1526 E1000_ROUNDUP(rxdr
->size
, 4096);
1528 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1532 "Unable to allocate memory for the receive descriptor ring\n");
1534 vfree(rxdr
->buffer_info
);
1535 kfree(rxdr
->ps_page
);
1536 kfree(rxdr
->ps_page_dma
);
1540 /* Fix for errata 23, can't cross 64kB boundary */
1541 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1542 void *olddesc
= rxdr
->desc
;
1543 dma_addr_t olddma
= rxdr
->dma
;
1544 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1545 "at %p\n", rxdr
->size
, rxdr
->desc
);
1546 /* Try again, without freeing the previous */
1547 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1548 /* Failed allocation, critical failure */
1550 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1552 "Unable to allocate memory "
1553 "for the receive descriptor ring\n");
1554 goto setup_rx_desc_die
;
1557 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1559 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1561 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1563 "Unable to allocate aligned memory "
1564 "for the receive descriptor ring\n");
1565 goto setup_rx_desc_die
;
1567 /* Free old allocation, new allocation was successful */
1568 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1571 memset(rxdr
->desc
, 0, rxdr
->size
);
1573 rxdr
->next_to_clean
= 0;
1574 rxdr
->next_to_use
= 0;
1580 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1581 * (Descriptors) for all queues
1582 * @adapter: board private structure
1584 * If this function returns with an error, then it's possible one or
1585 * more of the rings is populated (while the rest are not). It is the
1586 * callers duty to clean those orphaned rings.
1588 * Return 0 on success, negative on failure
1592 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1596 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1597 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1600 "Allocation for Rx Queue %u failed\n", i
);
1609 * e1000_setup_rctl - configure the receive control registers
1610 * @adapter: Board private structure
1612 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1613 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1615 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1617 uint32_t rctl
, rfctl
;
1618 uint32_t psrctl
= 0;
1619 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1623 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1625 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1627 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1628 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1629 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1631 if (adapter
->hw
.tbi_compatibility_on
== 1)
1632 rctl
|= E1000_RCTL_SBP
;
1634 rctl
&= ~E1000_RCTL_SBP
;
1636 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1637 rctl
&= ~E1000_RCTL_LPE
;
1639 rctl
|= E1000_RCTL_LPE
;
1641 /* Setup buffer sizes */
1642 rctl
&= ~E1000_RCTL_SZ_4096
;
1643 rctl
|= E1000_RCTL_BSEX
;
1644 switch (adapter
->rx_buffer_len
) {
1645 case E1000_RXBUFFER_256
:
1646 rctl
|= E1000_RCTL_SZ_256
;
1647 rctl
&= ~E1000_RCTL_BSEX
;
1649 case E1000_RXBUFFER_512
:
1650 rctl
|= E1000_RCTL_SZ_512
;
1651 rctl
&= ~E1000_RCTL_BSEX
;
1653 case E1000_RXBUFFER_1024
:
1654 rctl
|= E1000_RCTL_SZ_1024
;
1655 rctl
&= ~E1000_RCTL_BSEX
;
1657 case E1000_RXBUFFER_2048
:
1659 rctl
|= E1000_RCTL_SZ_2048
;
1660 rctl
&= ~E1000_RCTL_BSEX
;
1662 case E1000_RXBUFFER_4096
:
1663 rctl
|= E1000_RCTL_SZ_4096
;
1665 case E1000_RXBUFFER_8192
:
1666 rctl
|= E1000_RCTL_SZ_8192
;
1668 case E1000_RXBUFFER_16384
:
1669 rctl
|= E1000_RCTL_SZ_16384
;
1673 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1674 /* 82571 and greater support packet-split where the protocol
1675 * header is placed in skb->data and the packet data is
1676 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1677 * In the case of a non-split, skb->data is linearly filled,
1678 * followed by the page buffers. Therefore, skb->data is
1679 * sized to hold the largest protocol header.
1681 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1682 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1684 adapter
->rx_ps_pages
= pages
;
1686 adapter
->rx_ps_pages
= 0;
1688 if (adapter
->rx_ps_pages
) {
1689 /* Configure extra packet-split registers */
1690 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1691 rfctl
|= E1000_RFCTL_EXTEN
;
1692 /* disable IPv6 packet split support */
1693 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1694 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1696 rctl
|= E1000_RCTL_DTYP_PS
;
1698 psrctl
|= adapter
->rx_ps_bsize0
>>
1699 E1000_PSRCTL_BSIZE0_SHIFT
;
1701 switch (adapter
->rx_ps_pages
) {
1703 psrctl
|= PAGE_SIZE
<<
1704 E1000_PSRCTL_BSIZE3_SHIFT
;
1706 psrctl
|= PAGE_SIZE
<<
1707 E1000_PSRCTL_BSIZE2_SHIFT
;
1709 psrctl
|= PAGE_SIZE
>>
1710 E1000_PSRCTL_BSIZE1_SHIFT
;
1714 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1717 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1721 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1722 * @adapter: board private structure
1724 * Configure the Rx unit of the MAC after a reset.
1728 e1000_configure_rx(struct e1000_adapter
*adapter
)
1731 struct e1000_hw
*hw
= &adapter
->hw
;
1732 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1734 if (adapter
->rx_ps_pages
) {
1735 /* this is a 32 byte descriptor */
1736 rdlen
= adapter
->rx_ring
[0].count
*
1737 sizeof(union e1000_rx_desc_packet_split
);
1738 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1739 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1741 rdlen
= adapter
->rx_ring
[0].count
*
1742 sizeof(struct e1000_rx_desc
);
1743 adapter
->clean_rx
= e1000_clean_rx_irq
;
1744 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1747 /* disable receives while setting up the descriptors */
1748 rctl
= E1000_READ_REG(hw
, RCTL
);
1749 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1751 /* set the Receive Delay Timer Register */
1752 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1754 if (hw
->mac_type
>= e1000_82540
) {
1755 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1756 if (adapter
->itr
> 1)
1757 E1000_WRITE_REG(hw
, ITR
,
1758 1000000000 / (adapter
->itr
* 256));
1761 if (hw
->mac_type
>= e1000_82571
) {
1762 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1763 /* Reset delay timers after every interrupt */
1764 ctrl_ext
|= E1000_CTRL_EXT_INT_TIMER_CLR
;
1765 #ifdef CONFIG_E1000_NAPI
1766 /* Auto-Mask interrupts upon ICR read. */
1767 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1769 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1770 E1000_WRITE_REG(hw
, IAM
, ~0);
1771 E1000_WRITE_FLUSH(hw
);
1774 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1775 * the Base and Length of the Rx Descriptor Ring */
1776 switch (adapter
->num_rx_queues
) {
1779 rdba
= adapter
->rx_ring
[0].dma
;
1780 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1781 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1782 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1783 E1000_WRITE_REG(hw
, RDT
, 0);
1784 E1000_WRITE_REG(hw
, RDH
, 0);
1785 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1786 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1790 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1791 if (hw
->mac_type
>= e1000_82543
) {
1792 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1793 if (adapter
->rx_csum
== TRUE
) {
1794 rxcsum
|= E1000_RXCSUM_TUOFL
;
1796 /* Enable 82571 IPv4 payload checksum for UDP fragments
1797 * Must be used in conjunction with packet-split. */
1798 if ((hw
->mac_type
>= e1000_82571
) &&
1799 (adapter
->rx_ps_pages
)) {
1800 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1803 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1804 /* don't need to clear IPPCSE as it defaults to 0 */
1806 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1809 if (hw
->mac_type
== e1000_82573
)
1810 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1812 /* Enable Receives */
1813 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1817 * e1000_free_tx_resources - Free Tx Resources per Queue
1818 * @adapter: board private structure
1819 * @tx_ring: Tx descriptor ring for a specific queue
1821 * Free all transmit software resources
1825 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1826 struct e1000_tx_ring
*tx_ring
)
1828 struct pci_dev
*pdev
= adapter
->pdev
;
1830 e1000_clean_tx_ring(adapter
, tx_ring
);
1832 vfree(tx_ring
->buffer_info
);
1833 tx_ring
->buffer_info
= NULL
;
1835 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1837 tx_ring
->desc
= NULL
;
1841 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1842 * @adapter: board private structure
1844 * Free all transmit software resources
1848 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1852 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1853 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1857 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1858 struct e1000_buffer
*buffer_info
)
1860 if (buffer_info
->dma
) {
1861 pci_unmap_page(adapter
->pdev
,
1863 buffer_info
->length
,
1866 if (buffer_info
->skb
)
1867 dev_kfree_skb_any(buffer_info
->skb
);
1868 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1872 * e1000_clean_tx_ring - Free Tx Buffers
1873 * @adapter: board private structure
1874 * @tx_ring: ring to be cleaned
1878 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1879 struct e1000_tx_ring
*tx_ring
)
1881 struct e1000_buffer
*buffer_info
;
1885 /* Free all the Tx ring sk_buffs */
1887 for (i
= 0; i
< tx_ring
->count
; i
++) {
1888 buffer_info
= &tx_ring
->buffer_info
[i
];
1889 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1892 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1893 memset(tx_ring
->buffer_info
, 0, size
);
1895 /* Zero out the descriptor ring */
1897 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1899 tx_ring
->next_to_use
= 0;
1900 tx_ring
->next_to_clean
= 0;
1901 tx_ring
->last_tx_tso
= 0;
1903 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1904 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1908 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1909 * @adapter: board private structure
1913 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1917 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1918 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1922 * e1000_free_rx_resources - Free Rx Resources
1923 * @adapter: board private structure
1924 * @rx_ring: ring to clean the resources from
1926 * Free all receive software resources
1930 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1931 struct e1000_rx_ring
*rx_ring
)
1933 struct pci_dev
*pdev
= adapter
->pdev
;
1935 e1000_clean_rx_ring(adapter
, rx_ring
);
1937 vfree(rx_ring
->buffer_info
);
1938 rx_ring
->buffer_info
= NULL
;
1939 kfree(rx_ring
->ps_page
);
1940 rx_ring
->ps_page
= NULL
;
1941 kfree(rx_ring
->ps_page_dma
);
1942 rx_ring
->ps_page_dma
= NULL
;
1944 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1946 rx_ring
->desc
= NULL
;
1950 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1951 * @adapter: board private structure
1953 * Free all receive software resources
1957 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1961 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1962 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1966 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1967 * @adapter: board private structure
1968 * @rx_ring: ring to free buffers from
1972 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1973 struct e1000_rx_ring
*rx_ring
)
1975 struct e1000_buffer
*buffer_info
;
1976 struct e1000_ps_page
*ps_page
;
1977 struct e1000_ps_page_dma
*ps_page_dma
;
1978 struct pci_dev
*pdev
= adapter
->pdev
;
1982 /* Free all the Rx ring sk_buffs */
1983 for (i
= 0; i
< rx_ring
->count
; i
++) {
1984 buffer_info
= &rx_ring
->buffer_info
[i
];
1985 if (buffer_info
->skb
) {
1986 pci_unmap_single(pdev
,
1988 buffer_info
->length
,
1989 PCI_DMA_FROMDEVICE
);
1991 dev_kfree_skb(buffer_info
->skb
);
1992 buffer_info
->skb
= NULL
;
1994 ps_page
= &rx_ring
->ps_page
[i
];
1995 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1996 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1997 if (!ps_page
->ps_page
[j
]) break;
1998 pci_unmap_page(pdev
,
1999 ps_page_dma
->ps_page_dma
[j
],
2000 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
2001 ps_page_dma
->ps_page_dma
[j
] = 0;
2002 put_page(ps_page
->ps_page
[j
]);
2003 ps_page
->ps_page
[j
] = NULL
;
2007 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2008 memset(rx_ring
->buffer_info
, 0, size
);
2009 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2010 memset(rx_ring
->ps_page
, 0, size
);
2011 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2012 memset(rx_ring
->ps_page_dma
, 0, size
);
2014 /* Zero out the descriptor ring */
2016 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2018 rx_ring
->next_to_clean
= 0;
2019 rx_ring
->next_to_use
= 0;
2021 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2022 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2026 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2027 * @adapter: board private structure
2031 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2035 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2036 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2039 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2040 * and memory write and invalidate disabled for certain operations
2043 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2045 struct net_device
*netdev
= adapter
->netdev
;
2048 e1000_pci_clear_mwi(&adapter
->hw
);
2050 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2051 rctl
|= E1000_RCTL_RST
;
2052 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2053 E1000_WRITE_FLUSH(&adapter
->hw
);
2056 if (netif_running(netdev
))
2057 e1000_clean_all_rx_rings(adapter
);
2061 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2063 struct net_device
*netdev
= adapter
->netdev
;
2066 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2067 rctl
&= ~E1000_RCTL_RST
;
2068 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2069 E1000_WRITE_FLUSH(&adapter
->hw
);
2072 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2073 e1000_pci_set_mwi(&adapter
->hw
);
2075 if (netif_running(netdev
)) {
2076 /* No need to loop, because 82542 supports only 1 queue */
2077 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2078 e1000_configure_rx(adapter
);
2079 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2084 * e1000_set_mac - Change the Ethernet Address of the NIC
2085 * @netdev: network interface device structure
2086 * @p: pointer to an address structure
2088 * Returns 0 on success, negative on failure
2092 e1000_set_mac(struct net_device
*netdev
, void *p
)
2094 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2095 struct sockaddr
*addr
= p
;
2097 if (!is_valid_ether_addr(addr
->sa_data
))
2098 return -EADDRNOTAVAIL
;
2100 /* 82542 2.0 needs to be in reset to write receive address registers */
2102 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2103 e1000_enter_82542_rst(adapter
);
2105 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2106 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2108 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2110 /* With 82571 controllers, LAA may be overwritten (with the default)
2111 * due to controller reset from the other port. */
2112 if (adapter
->hw
.mac_type
== e1000_82571
) {
2113 /* activate the work around */
2114 adapter
->hw
.laa_is_present
= 1;
2116 /* Hold a copy of the LAA in RAR[14] This is done so that
2117 * between the time RAR[0] gets clobbered and the time it
2118 * gets fixed (in e1000_watchdog), the actual LAA is in one
2119 * of the RARs and no incoming packets directed to this port
2120 * are dropped. Eventaully the LAA will be in RAR[0] and
2122 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2123 E1000_RAR_ENTRIES
- 1);
2126 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2127 e1000_leave_82542_rst(adapter
);
2133 * e1000_set_multi - Multicast and Promiscuous mode set
2134 * @netdev: network interface device structure
2136 * The set_multi entry point is called whenever the multicast address
2137 * list or the network interface flags are updated. This routine is
2138 * responsible for configuring the hardware for proper multicast,
2139 * promiscuous mode, and all-multi behavior.
2143 e1000_set_multi(struct net_device
*netdev
)
2145 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2146 struct e1000_hw
*hw
= &adapter
->hw
;
2147 struct dev_mc_list
*mc_ptr
;
2149 uint32_t hash_value
;
2150 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2152 /* reserve RAR[14] for LAA over-write work-around */
2153 if (adapter
->hw
.mac_type
== e1000_82571
)
2156 /* Check for Promiscuous and All Multicast modes */
2158 rctl
= E1000_READ_REG(hw
, RCTL
);
2160 if (netdev
->flags
& IFF_PROMISC
) {
2161 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2162 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2163 rctl
|= E1000_RCTL_MPE
;
2164 rctl
&= ~E1000_RCTL_UPE
;
2166 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2169 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2171 /* 82542 2.0 needs to be in reset to write receive address registers */
2173 if (hw
->mac_type
== e1000_82542_rev2_0
)
2174 e1000_enter_82542_rst(adapter
);
2176 /* load the first 14 multicast address into the exact filters 1-14
2177 * RAR 0 is used for the station MAC adddress
2178 * if there are not 14 addresses, go ahead and clear the filters
2179 * -- with 82571 controllers only 0-13 entries are filled here
2181 mc_ptr
= netdev
->mc_list
;
2183 for (i
= 1; i
< rar_entries
; i
++) {
2185 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2186 mc_ptr
= mc_ptr
->next
;
2188 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2189 E1000_WRITE_FLUSH(hw
);
2190 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2191 E1000_WRITE_FLUSH(hw
);
2195 /* clear the old settings from the multicast hash table */
2197 for (i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++) {
2198 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2199 E1000_WRITE_FLUSH(hw
);
2202 /* load any remaining addresses into the hash table */
2204 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2205 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2206 e1000_mta_set(hw
, hash_value
);
2209 if (hw
->mac_type
== e1000_82542_rev2_0
)
2210 e1000_leave_82542_rst(adapter
);
2213 /* Need to wait a few seconds after link up to get diagnostic information from
2217 e1000_update_phy_info(unsigned long data
)
2219 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2220 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2224 * e1000_82547_tx_fifo_stall - Timer Call-back
2225 * @data: pointer to adapter cast into an unsigned long
2229 e1000_82547_tx_fifo_stall(unsigned long data
)
2231 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2232 struct net_device
*netdev
= adapter
->netdev
;
2235 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2236 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2237 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2238 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2239 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2240 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2241 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2242 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2243 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2244 tctl
& ~E1000_TCTL_EN
);
2245 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2246 adapter
->tx_head_addr
);
2247 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2248 adapter
->tx_head_addr
);
2249 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2250 adapter
->tx_head_addr
);
2251 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2252 adapter
->tx_head_addr
);
2253 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2254 E1000_WRITE_FLUSH(&adapter
->hw
);
2256 adapter
->tx_fifo_head
= 0;
2257 atomic_set(&adapter
->tx_fifo_stall
, 0);
2258 netif_wake_queue(netdev
);
2260 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2266 * e1000_watchdog - Timer Call-back
2267 * @data: pointer to adapter cast into an unsigned long
2270 e1000_watchdog(unsigned long data
)
2272 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2273 struct net_device
*netdev
= adapter
->netdev
;
2274 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2275 uint32_t link
, tctl
;
2277 e1000_check_for_link(&adapter
->hw
);
2278 if (adapter
->hw
.mac_type
== e1000_82573
) {
2279 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2280 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2281 e1000_update_mng_vlan(adapter
);
2284 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2285 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2286 link
= !adapter
->hw
.serdes_link_down
;
2288 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2291 if (!netif_carrier_ok(netdev
)) {
2292 boolean_t txb2b
= 1;
2293 e1000_get_speed_and_duplex(&adapter
->hw
,
2294 &adapter
->link_speed
,
2295 &adapter
->link_duplex
);
2297 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2298 adapter
->link_speed
,
2299 adapter
->link_duplex
== FULL_DUPLEX
?
2300 "Full Duplex" : "Half Duplex");
2302 /* tweak tx_queue_len according to speed/duplex
2303 * and adjust the timeout factor */
2304 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2305 adapter
->tx_timeout_factor
= 1;
2306 switch (adapter
->link_speed
) {
2309 netdev
->tx_queue_len
= 10;
2310 adapter
->tx_timeout_factor
= 8;
2314 netdev
->tx_queue_len
= 100;
2315 /* maybe add some timeout factor ? */
2319 if ((adapter
->hw
.mac_type
== e1000_82571
||
2320 adapter
->hw
.mac_type
== e1000_82572
) &&
2322 #define SPEED_MODE_BIT (1 << 21)
2324 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2325 tarc0
&= ~SPEED_MODE_BIT
;
2326 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2330 /* disable TSO for pcie and 10/100 speeds, to avoid
2331 * some hardware issues */
2332 if (!adapter
->tso_force
&&
2333 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2334 switch (adapter
->link_speed
) {
2338 "10/100 speed: disabling TSO\n");
2339 netdev
->features
&= ~NETIF_F_TSO
;
2342 netdev
->features
|= NETIF_F_TSO
;
2351 /* enable transmits in the hardware, need to do this
2352 * after setting TARC0 */
2353 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2354 tctl
|= E1000_TCTL_EN
;
2355 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2357 netif_carrier_on(netdev
);
2358 netif_wake_queue(netdev
);
2359 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2360 adapter
->smartspeed
= 0;
2363 if (netif_carrier_ok(netdev
)) {
2364 adapter
->link_speed
= 0;
2365 adapter
->link_duplex
= 0;
2366 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2367 netif_carrier_off(netdev
);
2368 netif_stop_queue(netdev
);
2369 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2371 /* 80003ES2LAN workaround--
2372 * For packet buffer work-around on link down event;
2373 * disable receives in the ISR and
2374 * reset device here in the watchdog
2376 if (adapter
->hw
.mac_type
== e1000_80003es2lan
) {
2378 schedule_work(&adapter
->reset_task
);
2382 e1000_smartspeed(adapter
);
2385 e1000_update_stats(adapter
);
2387 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2388 adapter
->tpt_old
= adapter
->stats
.tpt
;
2389 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2390 adapter
->colc_old
= adapter
->stats
.colc
;
2392 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2393 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2394 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2395 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2397 e1000_update_adaptive(&adapter
->hw
);
2399 if (!netif_carrier_ok(netdev
)) {
2400 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2401 /* We've lost link, so the controller stops DMA,
2402 * but we've got queued Tx work that's never going
2403 * to get done, so reset controller to flush Tx.
2404 * (Do the reset outside of interrupt context). */
2405 adapter
->tx_timeout_count
++;
2406 schedule_work(&adapter
->reset_task
);
2410 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2411 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2412 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2413 * asymmetrical Tx or Rx gets ITR=8000; everyone
2414 * else is between 2000-8000. */
2415 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2416 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2417 adapter
->gotcl
- adapter
->gorcl
:
2418 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2419 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2420 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2423 /* Cause software interrupt to ensure rx ring is cleaned */
2424 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2426 /* Force detection of hung controller every watchdog period */
2427 adapter
->detect_tx_hung
= TRUE
;
2429 /* With 82571 controllers, LAA may be overwritten due to controller
2430 * reset from the other port. Set the appropriate LAA in RAR[0] */
2431 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2432 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2434 /* Reset the timer */
2435 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2438 #define E1000_TX_FLAGS_CSUM 0x00000001
2439 #define E1000_TX_FLAGS_VLAN 0x00000002
2440 #define E1000_TX_FLAGS_TSO 0x00000004
2441 #define E1000_TX_FLAGS_IPV4 0x00000008
2442 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2443 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2446 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2447 struct sk_buff
*skb
)
2450 struct e1000_context_desc
*context_desc
;
2451 struct e1000_buffer
*buffer_info
;
2453 uint32_t cmd_length
= 0;
2454 uint16_t ipcse
= 0, tucse
, mss
;
2455 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2458 if (skb_shinfo(skb
)->tso_size
) {
2459 if (skb_header_cloned(skb
)) {
2460 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2465 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2466 mss
= skb_shinfo(skb
)->tso_size
;
2467 if (skb
->protocol
== htons(ETH_P_IP
)) {
2468 skb
->nh
.iph
->tot_len
= 0;
2469 skb
->nh
.iph
->check
= 0;
2471 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2476 cmd_length
= E1000_TXD_CMD_IP
;
2477 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2478 #ifdef NETIF_F_TSO_IPV6
2479 } else if (skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2480 skb
->nh
.ipv6h
->payload_len
= 0;
2482 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2483 &skb
->nh
.ipv6h
->daddr
,
2490 ipcss
= skb
->nh
.raw
- skb
->data
;
2491 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2492 tucss
= skb
->h
.raw
- skb
->data
;
2493 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2496 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2497 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2499 i
= tx_ring
->next_to_use
;
2500 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2501 buffer_info
= &tx_ring
->buffer_info
[i
];
2503 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2504 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2505 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2506 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2507 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2508 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2509 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2510 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2511 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2513 buffer_info
->time_stamp
= jiffies
;
2515 if (++i
== tx_ring
->count
) i
= 0;
2516 tx_ring
->next_to_use
= i
;
2526 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2527 struct sk_buff
*skb
)
2529 struct e1000_context_desc
*context_desc
;
2530 struct e1000_buffer
*buffer_info
;
2534 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2535 css
= skb
->h
.raw
- skb
->data
;
2537 i
= tx_ring
->next_to_use
;
2538 buffer_info
= &tx_ring
->buffer_info
[i
];
2539 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2541 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2542 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2543 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2544 context_desc
->tcp_seg_setup
.data
= 0;
2545 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2547 buffer_info
->time_stamp
= jiffies
;
2549 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2550 tx_ring
->next_to_use
= i
;
2558 #define E1000_MAX_TXD_PWR 12
2559 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2562 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2563 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2564 unsigned int nr_frags
, unsigned int mss
)
2566 struct e1000_buffer
*buffer_info
;
2567 unsigned int len
= skb
->len
;
2568 unsigned int offset
= 0, size
, count
= 0, i
;
2570 len
-= skb
->data_len
;
2572 i
= tx_ring
->next_to_use
;
2575 buffer_info
= &tx_ring
->buffer_info
[i
];
2576 size
= min(len
, max_per_txd
);
2578 /* Workaround for Controller erratum --
2579 * descriptor for non-tso packet in a linear SKB that follows a
2580 * tso gets written back prematurely before the data is fully
2581 * DMA'd to the controller */
2582 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2583 !skb_shinfo(skb
)->tso_size
) {
2584 tx_ring
->last_tx_tso
= 0;
2588 /* Workaround for premature desc write-backs
2589 * in TSO mode. Append 4-byte sentinel desc */
2590 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2593 /* work-around for errata 10 and it applies
2594 * to all controllers in PCI-X mode
2595 * The fix is to make sure that the first descriptor of a
2596 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2598 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2599 (size
> 2015) && count
== 0))
2602 /* Workaround for potential 82544 hang in PCI-X. Avoid
2603 * terminating buffers within evenly-aligned dwords. */
2604 if (unlikely(adapter
->pcix_82544
&&
2605 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2609 buffer_info
->length
= size
;
2611 pci_map_single(adapter
->pdev
,
2615 buffer_info
->time_stamp
= jiffies
;
2620 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2623 for (f
= 0; f
< nr_frags
; f
++) {
2624 struct skb_frag_struct
*frag
;
2626 frag
= &skb_shinfo(skb
)->frags
[f
];
2628 offset
= frag
->page_offset
;
2631 buffer_info
= &tx_ring
->buffer_info
[i
];
2632 size
= min(len
, max_per_txd
);
2634 /* Workaround for premature desc write-backs
2635 * in TSO mode. Append 4-byte sentinel desc */
2636 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2639 /* Workaround for potential 82544 hang in PCI-X.
2640 * Avoid terminating buffers within evenly-aligned
2642 if (unlikely(adapter
->pcix_82544
&&
2643 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2647 buffer_info
->length
= size
;
2649 pci_map_page(adapter
->pdev
,
2654 buffer_info
->time_stamp
= jiffies
;
2659 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2663 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2664 tx_ring
->buffer_info
[i
].skb
= skb
;
2665 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2671 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2672 int tx_flags
, int count
)
2674 struct e1000_tx_desc
*tx_desc
= NULL
;
2675 struct e1000_buffer
*buffer_info
;
2676 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2679 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2680 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2682 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2684 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2685 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2688 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2689 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2690 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2693 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2694 txd_lower
|= E1000_TXD_CMD_VLE
;
2695 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2698 i
= tx_ring
->next_to_use
;
2701 buffer_info
= &tx_ring
->buffer_info
[i
];
2702 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2703 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2704 tx_desc
->lower
.data
=
2705 cpu_to_le32(txd_lower
| buffer_info
->length
);
2706 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2707 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2710 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2712 /* Force memory writes to complete before letting h/w
2713 * know there are new descriptors to fetch. (Only
2714 * applicable for weak-ordered memory model archs,
2715 * such as IA-64). */
2718 tx_ring
->next_to_use
= i
;
2719 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2723 * 82547 workaround to avoid controller hang in half-duplex environment.
2724 * The workaround is to avoid queuing a large packet that would span
2725 * the internal Tx FIFO ring boundary by notifying the stack to resend
2726 * the packet at a later time. This gives the Tx FIFO an opportunity to
2727 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2728 * to the beginning of the Tx FIFO.
2731 #define E1000_FIFO_HDR 0x10
2732 #define E1000_82547_PAD_LEN 0x3E0
2735 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2737 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2738 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2740 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2742 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2743 goto no_fifo_stall_required
;
2745 if (atomic_read(&adapter
->tx_fifo_stall
))
2748 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2749 atomic_set(&adapter
->tx_fifo_stall
, 1);
2753 no_fifo_stall_required
:
2754 adapter
->tx_fifo_head
+= skb_fifo_len
;
2755 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2756 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2760 #define MINIMUM_DHCP_PACKET_SIZE 282
2762 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2764 struct e1000_hw
*hw
= &adapter
->hw
;
2765 uint16_t length
, offset
;
2766 if (vlan_tx_tag_present(skb
)) {
2767 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2768 ( adapter
->hw
.mng_cookie
.status
&
2769 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2772 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2773 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2774 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2775 const struct iphdr
*ip
=
2776 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2777 if (IPPROTO_UDP
== ip
->protocol
) {
2778 struct udphdr
*udp
=
2779 (struct udphdr
*)((uint8_t *)ip
+
2781 if (ntohs(udp
->dest
) == 67) {
2782 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2783 length
= skb
->len
- offset
;
2785 return e1000_mng_write_dhcp_info(hw
,
2795 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2797 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2799 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2800 struct e1000_tx_ring
*tx_ring
;
2801 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2802 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2803 unsigned int tx_flags
= 0;
2804 unsigned int len
= skb
->len
;
2805 unsigned long flags
;
2806 unsigned int nr_frags
= 0;
2807 unsigned int mss
= 0;
2811 len
-= skb
->data_len
;
2813 tx_ring
= adapter
->tx_ring
;
2815 if (unlikely(skb
->len
<= 0)) {
2816 dev_kfree_skb_any(skb
);
2817 return NETDEV_TX_OK
;
2821 mss
= skb_shinfo(skb
)->tso_size
;
2822 /* The controller does a simple calculation to
2823 * make sure there is enough room in the FIFO before
2824 * initiating the DMA for each buffer. The calc is:
2825 * 4 = ceil(buffer len/mss). To make sure we don't
2826 * overrun the FIFO, adjust the max buffer len if mss
2830 max_per_txd
= min(mss
<< 2, max_per_txd
);
2831 max_txd_pwr
= fls(max_per_txd
) - 1;
2833 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2834 * points to just header, pull a few bytes of payload from
2835 * frags into skb->data */
2836 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2837 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2838 switch (adapter
->hw
.mac_type
) {
2839 unsigned int pull_size
;
2843 pull_size
= min((unsigned int)4, skb
->data_len
);
2844 if (!__pskb_pull_tail(skb
, pull_size
)) {
2846 "__pskb_pull_tail failed.\n");
2847 dev_kfree_skb_any(skb
);
2848 return NETDEV_TX_OK
;
2850 len
= skb
->len
- skb
->data_len
;
2859 /* reserve a descriptor for the offload context */
2860 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2864 if (skb
->ip_summed
== CHECKSUM_HW
)
2869 /* Controller Erratum workaround */
2870 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2871 !skb_shinfo(skb
)->tso_size
)
2875 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2877 if (adapter
->pcix_82544
)
2880 /* work-around for errata 10 and it applies to all controllers
2881 * in PCI-X mode, so add one more descriptor to the count
2883 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2887 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2888 for (f
= 0; f
< nr_frags
; f
++)
2889 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2891 if (adapter
->pcix_82544
)
2895 if (adapter
->hw
.tx_pkt_filtering
&&
2896 (adapter
->hw
.mac_type
== e1000_82573
))
2897 e1000_transfer_dhcp_info(adapter
, skb
);
2899 local_irq_save(flags
);
2900 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2901 /* Collision - tell upper layer to requeue */
2902 local_irq_restore(flags
);
2903 return NETDEV_TX_LOCKED
;
2906 /* need: count + 2 desc gap to keep tail from touching
2907 * head, otherwise try next time */
2908 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2909 netif_stop_queue(netdev
);
2910 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2911 return NETDEV_TX_BUSY
;
2914 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2915 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2916 netif_stop_queue(netdev
);
2917 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2918 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2919 return NETDEV_TX_BUSY
;
2923 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2924 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2925 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2928 first
= tx_ring
->next_to_use
;
2930 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2932 dev_kfree_skb_any(skb
);
2933 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2934 return NETDEV_TX_OK
;
2938 tx_ring
->last_tx_tso
= 1;
2939 tx_flags
|= E1000_TX_FLAGS_TSO
;
2940 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2941 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2943 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2944 * 82571 hardware supports TSO capabilities for IPv6 as well...
2945 * no longer assume, we must. */
2946 if (likely(skb
->protocol
== htons(ETH_P_IP
)))
2947 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2949 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2950 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2951 max_per_txd
, nr_frags
, mss
));
2953 netdev
->trans_start
= jiffies
;
2955 /* Make sure there is space in the ring for the next send. */
2956 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2957 netif_stop_queue(netdev
);
2959 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2960 return NETDEV_TX_OK
;
2964 * e1000_tx_timeout - Respond to a Tx Hang
2965 * @netdev: network interface device structure
2969 e1000_tx_timeout(struct net_device
*netdev
)
2971 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2973 /* Do the reset outside of interrupt context */
2974 adapter
->tx_timeout_count
++;
2975 schedule_work(&adapter
->reset_task
);
2979 e1000_reset_task(struct net_device
*netdev
)
2981 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2983 e1000_reinit_locked(adapter
);
2987 * e1000_get_stats - Get System Network Statistics
2988 * @netdev: network interface device structure
2990 * Returns the address of the device statistics structure.
2991 * The statistics are actually updated from the timer callback.
2994 static struct net_device_stats
*
2995 e1000_get_stats(struct net_device
*netdev
)
2997 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2999 /* only return the current stats */
3000 return &adapter
->net_stats
;
3004 * e1000_change_mtu - Change the Maximum Transfer Unit
3005 * @netdev: network interface device structure
3006 * @new_mtu: new value for maximum frame size
3008 * Returns 0 on success, negative on failure
3012 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3014 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3015 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3016 uint16_t eeprom_data
= 0;
3018 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3019 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3020 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3024 /* Adapter-specific max frame size limits. */
3025 switch (adapter
->hw
.mac_type
) {
3026 case e1000_undefined
... e1000_82542_rev2_1
:
3027 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3028 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3033 /* only enable jumbo frames if ASPM is disabled completely
3034 * this means both bits must be zero in 0x1A bits 3:2 */
3035 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3037 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
3038 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3040 "Jumbo Frames not supported.\n");
3045 /* fall through to get support */
3048 case e1000_80003es2lan
:
3049 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3050 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3051 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3056 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3060 /* NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
3061 * means we reserve 2 more, this pushes us to allocate from the next
3063 * i.e. RXBUFFER_2048 --> size-4096 slab */
3065 if (max_frame
<= E1000_RXBUFFER_256
)
3066 adapter
->rx_buffer_len
= E1000_RXBUFFER_256
;
3067 else if (max_frame
<= E1000_RXBUFFER_512
)
3068 adapter
->rx_buffer_len
= E1000_RXBUFFER_512
;
3069 else if (max_frame
<= E1000_RXBUFFER_1024
)
3070 adapter
->rx_buffer_len
= E1000_RXBUFFER_1024
;
3071 else if (max_frame
<= E1000_RXBUFFER_2048
)
3072 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3073 else if (max_frame
<= E1000_RXBUFFER_4096
)
3074 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3075 else if (max_frame
<= E1000_RXBUFFER_8192
)
3076 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3077 else if (max_frame
<= E1000_RXBUFFER_16384
)
3078 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3080 /* adjust allocation if LPE protects us, and we aren't using SBP */
3081 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
3082 if (!adapter
->hw
.tbi_compatibility_on
&&
3083 ((max_frame
== MAXIMUM_ETHERNET_FRAME_SIZE
) ||
3084 (max_frame
== MAXIMUM_ETHERNET_VLAN_SIZE
)))
3085 adapter
->rx_buffer_len
= MAXIMUM_ETHERNET_VLAN_SIZE
;
3087 netdev
->mtu
= new_mtu
;
3089 if (netif_running(netdev
))
3090 e1000_reinit_locked(adapter
);
3092 adapter
->hw
.max_frame_size
= max_frame
;
3098 * e1000_update_stats - Update the board statistics counters
3099 * @adapter: board private structure
3103 e1000_update_stats(struct e1000_adapter
*adapter
)
3105 struct e1000_hw
*hw
= &adapter
->hw
;
3106 struct pci_dev
*pdev
= adapter
->pdev
;
3107 unsigned long flags
;
3110 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3113 * Prevent stats update while adapter is being reset, or if the pci
3114 * connection is down.
3116 if (adapter
->link_speed
== 0)
3118 if (pdev
->error_state
&& pdev
->error_state
!= pci_channel_io_normal
)
3121 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3123 /* these counters are modified from e1000_adjust_tbi_stats,
3124 * called from the interrupt context, so they must only
3125 * be written while holding adapter->stats_lock
3128 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3129 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3130 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3131 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3132 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3133 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3134 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3135 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3136 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3137 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3138 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3139 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3140 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3142 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3143 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3144 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3145 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3146 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3147 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3148 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3149 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3150 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3151 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3152 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3153 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3154 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3155 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3156 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3157 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3158 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3159 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3160 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3161 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3162 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3163 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3164 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3165 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3166 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3167 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3168 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3169 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3170 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3171 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3172 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3173 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3174 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3175 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3177 /* used for adaptive IFS */
3179 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3180 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3181 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3182 adapter
->stats
.colc
+= hw
->collision_delta
;
3184 if (hw
->mac_type
>= e1000_82543
) {
3185 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3186 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3187 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3188 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3189 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3190 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3192 if (hw
->mac_type
> e1000_82547_rev_2
) {
3193 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3194 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3195 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3196 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3197 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3198 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3199 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3200 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3201 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3204 /* Fill out the OS statistics structure */
3206 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3207 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3208 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3209 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3210 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3211 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3215 /* RLEC on some newer hardware can be incorrect so build
3216 * our own version based on RUC and ROC */
3217 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3218 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3219 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3220 adapter
->stats
.cexterr
;
3221 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3223 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3224 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3225 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3229 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3230 adapter
->stats
.latecol
;
3231 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3232 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3233 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3235 /* Tx Dropped needs to be maintained elsewhere */
3239 if (hw
->media_type
== e1000_media_type_copper
) {
3240 if ((adapter
->link_speed
== SPEED_1000
) &&
3241 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3242 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3243 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3246 if ((hw
->mac_type
<= e1000_82546
) &&
3247 (hw
->phy_type
== e1000_phy_m88
) &&
3248 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3249 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3252 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3256 * e1000_intr - Interrupt Handler
3257 * @irq: interrupt number
3258 * @data: pointer to a network interface device structure
3259 * @pt_regs: CPU registers structure
3263 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3265 struct net_device
*netdev
= data
;
3266 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3267 struct e1000_hw
*hw
= &adapter
->hw
;
3268 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3269 #ifndef CONFIG_E1000_NAPI
3272 /* Interrupt Auto-Mask...upon reading ICR,
3273 * interrupts are masked. No need for the
3274 * IMC write, but it does mean we should
3275 * account for it ASAP. */
3276 if (likely(hw
->mac_type
>= e1000_82571
))
3277 atomic_inc(&adapter
->irq_sem
);
3280 if (unlikely(!icr
)) {
3281 #ifdef CONFIG_E1000_NAPI
3282 if (hw
->mac_type
>= e1000_82571
)
3283 e1000_irq_enable(adapter
);
3285 return IRQ_NONE
; /* Not our interrupt */
3288 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3289 hw
->get_link_status
= 1;
3290 /* 80003ES2LAN workaround--
3291 * For packet buffer work-around on link down event;
3292 * disable receives here in the ISR and
3293 * reset adapter in watchdog
3295 if (netif_carrier_ok(netdev
) &&
3296 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3297 /* disable receives */
3298 rctl
= E1000_READ_REG(hw
, RCTL
);
3299 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3301 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3304 #ifdef CONFIG_E1000_NAPI
3305 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3306 atomic_inc(&adapter
->irq_sem
);
3307 E1000_WRITE_REG(hw
, IMC
, ~0);
3308 E1000_WRITE_FLUSH(hw
);
3310 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3311 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3313 e1000_irq_enable(adapter
);
3315 /* Writing IMC and IMS is needed for 82547.
3316 * Due to Hub Link bus being occupied, an interrupt
3317 * de-assertion message is not able to be sent.
3318 * When an interrupt assertion message is generated later,
3319 * two messages are re-ordered and sent out.
3320 * That causes APIC to think 82547 is in de-assertion
3321 * state, while 82547 is in assertion state, resulting
3322 * in dead lock. Writing IMC forces 82547 into
3323 * de-assertion state.
3325 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3326 atomic_inc(&adapter
->irq_sem
);
3327 E1000_WRITE_REG(hw
, IMC
, ~0);
3330 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3331 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3332 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3335 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3336 e1000_irq_enable(adapter
);
3343 #ifdef CONFIG_E1000_NAPI
3345 * e1000_clean - NAPI Rx polling callback
3346 * @adapter: board private structure
3350 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3352 struct e1000_adapter
*adapter
;
3353 int work_to_do
= min(*budget
, poll_dev
->quota
);
3354 int tx_cleaned
= 0, i
= 0, work_done
= 0;
3356 /* Must NOT use netdev_priv macro here. */
3357 adapter
= poll_dev
->priv
;
3359 /* Keep link state information with original netdev */
3360 if (!netif_carrier_ok(adapter
->netdev
))
3363 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3365 BUG_ON(i
== adapter
->num_rx_queues
);
3368 if (likely(adapter
->num_tx_queues
== 1)) {
3369 /* e1000_clean is called per-cpu. This lock protects
3370 * tx_ring[0] from being cleaned by multiple cpus
3371 * simultaneously. A failure obtaining the lock means
3372 * tx_ring[0] is currently being cleaned anyway. */
3373 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3374 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3375 &adapter
->tx_ring
[0]);
3376 spin_unlock(&adapter
->tx_queue_lock
);
3379 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3381 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3382 &work_done
, work_to_do
);
3384 *budget
-= work_done
;
3385 poll_dev
->quota
-= work_done
;
3387 /* If no Tx and not enough Rx work done, exit the polling mode */
3388 if ((!tx_cleaned
&& (work_done
== 0)) ||
3389 !netif_running(adapter
->netdev
)) {
3391 netif_rx_complete(poll_dev
);
3392 e1000_irq_enable(adapter
);
3401 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3402 * @adapter: board private structure
3406 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3407 struct e1000_tx_ring
*tx_ring
)
3409 struct net_device
*netdev
= adapter
->netdev
;
3410 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3411 struct e1000_buffer
*buffer_info
;
3412 unsigned int i
, eop
;
3413 #ifdef CONFIG_E1000_NAPI
3414 unsigned int count
= 0;
3416 boolean_t cleaned
= FALSE
;
3418 i
= tx_ring
->next_to_clean
;
3419 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3420 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3422 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3423 for (cleaned
= FALSE
; !cleaned
; ) {
3424 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3425 buffer_info
= &tx_ring
->buffer_info
[i
];
3426 cleaned
= (i
== eop
);
3428 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3429 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3431 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3435 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3436 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3437 #ifdef CONFIG_E1000_NAPI
3438 #define E1000_TX_WEIGHT 64
3439 /* weight of a sort for tx, to avoid endless transmit cleanup */
3440 if (count
++ == E1000_TX_WEIGHT
) break;
3444 tx_ring
->next_to_clean
= i
;
3446 #define TX_WAKE_THRESHOLD 32
3447 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3448 netif_carrier_ok(netdev
))) {
3449 spin_lock(&tx_ring
->tx_lock
);
3450 if (netif_queue_stopped(netdev
) &&
3451 (E1000_DESC_UNUSED(tx_ring
) >= TX_WAKE_THRESHOLD
))
3452 netif_wake_queue(netdev
);
3453 spin_unlock(&tx_ring
->tx_lock
);
3456 if (adapter
->detect_tx_hung
) {
3457 /* Detect a transmit hang in hardware, this serializes the
3458 * check with the clearing of time_stamp and movement of i */
3459 adapter
->detect_tx_hung
= FALSE
;
3460 if (tx_ring
->buffer_info
[eop
].dma
&&
3461 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3462 (adapter
->tx_timeout_factor
* HZ
))
3463 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3464 E1000_STATUS_TXOFF
)) {
3466 /* detected Tx unit hang */
3467 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3471 " next_to_use <%x>\n"
3472 " next_to_clean <%x>\n"
3473 "buffer_info[next_to_clean]\n"
3474 " time_stamp <%lx>\n"
3475 " next_to_watch <%x>\n"
3477 " next_to_watch.status <%x>\n",
3478 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3479 sizeof(struct e1000_tx_ring
)),
3480 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3481 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3482 tx_ring
->next_to_use
,
3483 tx_ring
->next_to_clean
,
3484 tx_ring
->buffer_info
[eop
].time_stamp
,
3487 eop_desc
->upper
.fields
.status
);
3488 netif_stop_queue(netdev
);
3495 * e1000_rx_checksum - Receive Checksum Offload for 82543
3496 * @adapter: board private structure
3497 * @status_err: receive descriptor status and error fields
3498 * @csum: receive descriptor csum field
3499 * @sk_buff: socket buffer with received data
3503 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3504 uint32_t status_err
, uint32_t csum
,
3505 struct sk_buff
*skb
)
3507 uint16_t status
= (uint16_t)status_err
;
3508 uint8_t errors
= (uint8_t)(status_err
>> 24);
3509 skb
->ip_summed
= CHECKSUM_NONE
;
3511 /* 82543 or newer only */
3512 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3513 /* Ignore Checksum bit is set */
3514 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3515 /* TCP/UDP checksum error bit is set */
3516 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3517 /* let the stack verify checksum errors */
3518 adapter
->hw_csum_err
++;
3521 /* TCP/UDP Checksum has not been calculated */
3522 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3523 if (!(status
& E1000_RXD_STAT_TCPCS
))
3526 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3529 /* It must be a TCP or UDP packet with a valid checksum */
3530 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3531 /* TCP checksum is good */
3532 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3533 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3534 /* IP fragment with UDP payload */
3535 /* Hardware complements the payload checksum, so we undo it
3536 * and then put the value in host order for further stack use.
3538 csum
= ntohl(csum
^ 0xFFFF);
3540 skb
->ip_summed
= CHECKSUM_HW
;
3542 adapter
->hw_csum_good
++;
3546 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3547 * @adapter: board private structure
3551 #ifdef CONFIG_E1000_NAPI
3552 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3553 struct e1000_rx_ring
*rx_ring
,
3554 int *work_done
, int work_to_do
)
3556 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3557 struct e1000_rx_ring
*rx_ring
)
3560 struct net_device
*netdev
= adapter
->netdev
;
3561 struct pci_dev
*pdev
= adapter
->pdev
;
3562 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3563 struct e1000_buffer
*buffer_info
, *next_buffer
;
3564 unsigned long flags
;
3568 int cleaned_count
= 0;
3569 boolean_t cleaned
= FALSE
;
3571 i
= rx_ring
->next_to_clean
;
3572 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3573 buffer_info
= &rx_ring
->buffer_info
[i
];
3575 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3576 struct sk_buff
*skb
;
3578 #ifdef CONFIG_E1000_NAPI
3579 if (*work_done
>= work_to_do
)
3583 status
= rx_desc
->status
;
3584 skb
= buffer_info
->skb
;
3585 buffer_info
->skb
= NULL
;
3587 prefetch(skb
->data
- NET_IP_ALIGN
);
3589 if (++i
== rx_ring
->count
) i
= 0;
3590 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3593 next_buffer
= &rx_ring
->buffer_info
[i
];
3597 pci_unmap_single(pdev
,
3599 buffer_info
->length
,
3600 PCI_DMA_FROMDEVICE
);
3602 length
= le16_to_cpu(rx_desc
->length
);
3604 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3605 /* All receives must fit into a single buffer */
3606 E1000_DBG("%s: Receive packet consumed multiple"
3607 " buffers\n", netdev
->name
);
3609 buffer_info
-> skb
= skb
;
3613 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3614 last_byte
= *(skb
->data
+ length
- 1);
3615 if (TBI_ACCEPT(&adapter
->hw
, status
,
3616 rx_desc
->errors
, length
, last_byte
)) {
3617 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3618 e1000_tbi_adjust_stats(&adapter
->hw
,
3621 spin_unlock_irqrestore(&adapter
->stats_lock
,
3626 buffer_info
->skb
= skb
;
3631 /* code added for copybreak, this should improve
3632 * performance for small packets with large amounts
3633 * of reassembly being done in the stack */
3634 #define E1000_CB_LENGTH 256
3635 if (length
< E1000_CB_LENGTH
) {
3636 struct sk_buff
*new_skb
=
3637 dev_alloc_skb(length
+ NET_IP_ALIGN
);
3639 skb_reserve(new_skb
, NET_IP_ALIGN
);
3640 new_skb
->dev
= netdev
;
3641 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3642 skb
->data
- NET_IP_ALIGN
,
3643 length
+ NET_IP_ALIGN
);
3644 /* save the skb in buffer_info as good */
3645 buffer_info
->skb
= skb
;
3647 skb_put(skb
, length
);
3650 skb_put(skb
, length
);
3652 /* end copybreak code */
3654 /* Receive Checksum Offload */
3655 e1000_rx_checksum(adapter
,
3656 (uint32_t)(status
) |
3657 ((uint32_t)(rx_desc
->errors
) << 24),
3658 le16_to_cpu(rx_desc
->csum
), skb
);
3660 skb
->protocol
= eth_type_trans(skb
, netdev
);
3661 #ifdef CONFIG_E1000_NAPI
3662 if (unlikely(adapter
->vlgrp
&&
3663 (status
& E1000_RXD_STAT_VP
))) {
3664 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3665 le16_to_cpu(rx_desc
->special
) &
3666 E1000_RXD_SPC_VLAN_MASK
);
3668 netif_receive_skb(skb
);
3670 #else /* CONFIG_E1000_NAPI */
3671 if (unlikely(adapter
->vlgrp
&&
3672 (status
& E1000_RXD_STAT_VP
))) {
3673 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3674 le16_to_cpu(rx_desc
->special
) &
3675 E1000_RXD_SPC_VLAN_MASK
);
3679 #endif /* CONFIG_E1000_NAPI */
3680 netdev
->last_rx
= jiffies
;
3683 rx_desc
->status
= 0;
3685 /* return some buffers to hardware, one at a time is too slow */
3686 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3687 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3691 /* use prefetched values */
3693 buffer_info
= next_buffer
;
3695 rx_ring
->next_to_clean
= i
;
3697 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3699 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3705 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3706 * @adapter: board private structure
3710 #ifdef CONFIG_E1000_NAPI
3711 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3712 struct e1000_rx_ring
*rx_ring
,
3713 int *work_done
, int work_to_do
)
3715 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3716 struct e1000_rx_ring
*rx_ring
)
3719 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3720 struct net_device
*netdev
= adapter
->netdev
;
3721 struct pci_dev
*pdev
= adapter
->pdev
;
3722 struct e1000_buffer
*buffer_info
, *next_buffer
;
3723 struct e1000_ps_page
*ps_page
;
3724 struct e1000_ps_page_dma
*ps_page_dma
;
3725 struct sk_buff
*skb
;
3727 uint32_t length
, staterr
;
3728 int cleaned_count
= 0;
3729 boolean_t cleaned
= FALSE
;
3731 i
= rx_ring
->next_to_clean
;
3732 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3733 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3734 buffer_info
= &rx_ring
->buffer_info
[i
];
3736 while (staterr
& E1000_RXD_STAT_DD
) {
3737 ps_page
= &rx_ring
->ps_page
[i
];
3738 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3739 #ifdef CONFIG_E1000_NAPI
3740 if (unlikely(*work_done
>= work_to_do
))
3744 skb
= buffer_info
->skb
;
3746 /* in the packet split case this is header only */
3747 prefetch(skb
->data
- NET_IP_ALIGN
);
3749 if (++i
== rx_ring
->count
) i
= 0;
3750 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3753 next_buffer
= &rx_ring
->buffer_info
[i
];
3757 pci_unmap_single(pdev
, buffer_info
->dma
,
3758 buffer_info
->length
,
3759 PCI_DMA_FROMDEVICE
);
3761 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3762 E1000_DBG("%s: Packet Split buffers didn't pick up"
3763 " the full packet\n", netdev
->name
);
3764 dev_kfree_skb_irq(skb
);
3768 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3769 dev_kfree_skb_irq(skb
);
3773 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3775 if (unlikely(!length
)) {
3776 E1000_DBG("%s: Last part of the packet spanning"
3777 " multiple descriptors\n", netdev
->name
);
3778 dev_kfree_skb_irq(skb
);
3783 skb_put(skb
, length
);
3786 /* this looks ugly, but it seems compiler issues make it
3787 more efficient than reusing j */
3788 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3790 /* page alloc/put takes too long and effects small packet
3791 * throughput, so unsplit small packets and save the alloc/put*/
3792 if (l1
&& ((length
+ l1
) <= adapter
->rx_ps_bsize0
)) {
3794 /* there is no documentation about how to call
3795 * kmap_atomic, so we can't hold the mapping
3797 pci_dma_sync_single_for_cpu(pdev
,
3798 ps_page_dma
->ps_page_dma
[0],
3800 PCI_DMA_FROMDEVICE
);
3801 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3802 KM_SKB_DATA_SOFTIRQ
);
3803 memcpy(skb
->tail
, vaddr
, l1
);
3804 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3805 pci_dma_sync_single_for_device(pdev
,
3806 ps_page_dma
->ps_page_dma
[0],
3807 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3814 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3815 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3817 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3818 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3819 ps_page_dma
->ps_page_dma
[j
] = 0;
3820 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3822 ps_page
->ps_page
[j
] = NULL
;
3824 skb
->data_len
+= length
;
3825 skb
->truesize
+= length
;
3829 e1000_rx_checksum(adapter
, staterr
,
3830 le16_to_cpu(rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
), skb
);
3831 skb
->protocol
= eth_type_trans(skb
, netdev
);
3833 if (likely(rx_desc
->wb
.upper
.header_status
&
3834 cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP
)))
3835 adapter
->rx_hdr_split
++;
3836 #ifdef CONFIG_E1000_NAPI
3837 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3838 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3839 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3840 E1000_RXD_SPC_VLAN_MASK
);
3842 netif_receive_skb(skb
);
3844 #else /* CONFIG_E1000_NAPI */
3845 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3846 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3847 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3848 E1000_RXD_SPC_VLAN_MASK
);
3852 #endif /* CONFIG_E1000_NAPI */
3853 netdev
->last_rx
= jiffies
;
3856 rx_desc
->wb
.middle
.status_error
&= cpu_to_le32(~0xFF);
3857 buffer_info
->skb
= NULL
;
3859 /* return some buffers to hardware, one at a time is too slow */
3860 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3861 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3865 /* use prefetched values */
3867 buffer_info
= next_buffer
;
3869 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3871 rx_ring
->next_to_clean
= i
;
3873 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3875 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3881 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3882 * @adapter: address of board private structure
3886 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3887 struct e1000_rx_ring
*rx_ring
,
3890 struct net_device
*netdev
= adapter
->netdev
;
3891 struct pci_dev
*pdev
= adapter
->pdev
;
3892 struct e1000_rx_desc
*rx_desc
;
3893 struct e1000_buffer
*buffer_info
;
3894 struct sk_buff
*skb
;
3896 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3898 i
= rx_ring
->next_to_use
;
3899 buffer_info
= &rx_ring
->buffer_info
[i
];
3901 while (cleaned_count
--) {
3902 if (!(skb
= buffer_info
->skb
))
3903 skb
= dev_alloc_skb(bufsz
);
3909 if (unlikely(!skb
)) {
3910 /* Better luck next round */
3911 adapter
->alloc_rx_buff_failed
++;
3915 /* Fix for errata 23, can't cross 64kB boundary */
3916 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3917 struct sk_buff
*oldskb
= skb
;
3918 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3919 "at %p\n", bufsz
, skb
->data
);
3920 /* Try again, without freeing the previous */
3921 skb
= dev_alloc_skb(bufsz
);
3922 /* Failed allocation, critical failure */
3924 dev_kfree_skb(oldskb
);
3928 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3931 dev_kfree_skb(oldskb
);
3932 break; /* while !buffer_info->skb */
3934 /* Use new allocation */
3935 dev_kfree_skb(oldskb
);
3938 /* Make buffer alignment 2 beyond a 16 byte boundary
3939 * this will result in a 16 byte aligned IP header after
3940 * the 14 byte MAC header is removed
3942 skb_reserve(skb
, NET_IP_ALIGN
);
3946 buffer_info
->skb
= skb
;
3947 buffer_info
->length
= adapter
->rx_buffer_len
;
3949 buffer_info
->dma
= pci_map_single(pdev
,
3951 adapter
->rx_buffer_len
,
3952 PCI_DMA_FROMDEVICE
);
3954 /* Fix for errata 23, can't cross 64kB boundary */
3955 if (!e1000_check_64k_bound(adapter
,
3956 (void *)(unsigned long)buffer_info
->dma
,
3957 adapter
->rx_buffer_len
)) {
3958 DPRINTK(RX_ERR
, ERR
,
3959 "dma align check failed: %u bytes at %p\n",
3960 adapter
->rx_buffer_len
,
3961 (void *)(unsigned long)buffer_info
->dma
);
3963 buffer_info
->skb
= NULL
;
3965 pci_unmap_single(pdev
, buffer_info
->dma
,
3966 adapter
->rx_buffer_len
,
3967 PCI_DMA_FROMDEVICE
);
3969 break; /* while !buffer_info->skb */
3971 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3972 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3974 if (unlikely(++i
== rx_ring
->count
))
3976 buffer_info
= &rx_ring
->buffer_info
[i
];
3979 if (likely(rx_ring
->next_to_use
!= i
)) {
3980 rx_ring
->next_to_use
= i
;
3981 if (unlikely(i
-- == 0))
3982 i
= (rx_ring
->count
- 1);
3984 /* Force memory writes to complete before letting h/w
3985 * know there are new descriptors to fetch. (Only
3986 * applicable for weak-ordered memory model archs,
3987 * such as IA-64). */
3989 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3994 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3995 * @adapter: address of board private structure
3999 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
4000 struct e1000_rx_ring
*rx_ring
,
4003 struct net_device
*netdev
= adapter
->netdev
;
4004 struct pci_dev
*pdev
= adapter
->pdev
;
4005 union e1000_rx_desc_packet_split
*rx_desc
;
4006 struct e1000_buffer
*buffer_info
;
4007 struct e1000_ps_page
*ps_page
;
4008 struct e1000_ps_page_dma
*ps_page_dma
;
4009 struct sk_buff
*skb
;
4012 i
= rx_ring
->next_to_use
;
4013 buffer_info
= &rx_ring
->buffer_info
[i
];
4014 ps_page
= &rx_ring
->ps_page
[i
];
4015 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4017 while (cleaned_count
--) {
4018 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
4020 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
4021 if (j
< adapter
->rx_ps_pages
) {
4022 if (likely(!ps_page
->ps_page
[j
])) {
4023 ps_page
->ps_page
[j
] =
4024 alloc_page(GFP_ATOMIC
);
4025 if (unlikely(!ps_page
->ps_page
[j
])) {
4026 adapter
->alloc_rx_buff_failed
++;
4029 ps_page_dma
->ps_page_dma
[j
] =
4031 ps_page
->ps_page
[j
],
4033 PCI_DMA_FROMDEVICE
);
4035 /* Refresh the desc even if buffer_addrs didn't
4036 * change because each write-back erases
4039 rx_desc
->read
.buffer_addr
[j
+1] =
4040 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4042 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4045 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4047 if (unlikely(!skb
)) {
4048 adapter
->alloc_rx_buff_failed
++;
4052 /* Make buffer alignment 2 beyond a 16 byte boundary
4053 * this will result in a 16 byte aligned IP header after
4054 * the 14 byte MAC header is removed
4056 skb_reserve(skb
, NET_IP_ALIGN
);
4060 buffer_info
->skb
= skb
;
4061 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4062 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4063 adapter
->rx_ps_bsize0
,
4064 PCI_DMA_FROMDEVICE
);
4066 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4068 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4069 buffer_info
= &rx_ring
->buffer_info
[i
];
4070 ps_page
= &rx_ring
->ps_page
[i
];
4071 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4075 if (likely(rx_ring
->next_to_use
!= i
)) {
4076 rx_ring
->next_to_use
= i
;
4077 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4079 /* Force memory writes to complete before letting h/w
4080 * know there are new descriptors to fetch. (Only
4081 * applicable for weak-ordered memory model archs,
4082 * such as IA-64). */
4084 /* Hardware increments by 16 bytes, but packet split
4085 * descriptors are 32 bytes...so we increment tail
4088 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4093 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4098 e1000_smartspeed(struct e1000_adapter
*adapter
)
4100 uint16_t phy_status
;
4103 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4104 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4107 if (adapter
->smartspeed
== 0) {
4108 /* If Master/Slave config fault is asserted twice,
4109 * we assume back-to-back */
4110 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4111 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4112 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4113 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4114 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4115 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4116 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4117 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4119 adapter
->smartspeed
++;
4120 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4121 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4123 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4124 MII_CR_RESTART_AUTO_NEG
);
4125 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4130 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4131 /* If still no link, perhaps using 2/3 pair cable */
4132 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4133 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4134 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4135 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4136 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4137 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4138 MII_CR_RESTART_AUTO_NEG
);
4139 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4142 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4143 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4144 adapter
->smartspeed
= 0;
4155 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4161 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4175 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4177 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4178 struct mii_ioctl_data
*data
= if_mii(ifr
);
4182 unsigned long flags
;
4184 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4189 data
->phy_id
= adapter
->hw
.phy_addr
;
4192 if (!capable(CAP_NET_ADMIN
))
4194 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4195 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4197 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4200 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4203 if (!capable(CAP_NET_ADMIN
))
4205 if (data
->reg_num
& ~(0x1F))
4207 mii_reg
= data
->val_in
;
4208 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4209 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4211 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4214 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
4215 switch (data
->reg_num
) {
4217 if (mii_reg
& MII_CR_POWER_DOWN
)
4219 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4220 adapter
->hw
.autoneg
= 1;
4221 adapter
->hw
.autoneg_advertised
= 0x2F;
4224 spddplx
= SPEED_1000
;
4225 else if (mii_reg
& 0x2000)
4226 spddplx
= SPEED_100
;
4229 spddplx
+= (mii_reg
& 0x100)
4232 retval
= e1000_set_spd_dplx(adapter
,
4235 spin_unlock_irqrestore(
4236 &adapter
->stats_lock
,
4241 if (netif_running(adapter
->netdev
))
4242 e1000_reinit_locked(adapter
);
4244 e1000_reset(adapter
);
4246 case M88E1000_PHY_SPEC_CTRL
:
4247 case M88E1000_EXT_PHY_SPEC_CTRL
:
4248 if (e1000_phy_reset(&adapter
->hw
)) {
4249 spin_unlock_irqrestore(
4250 &adapter
->stats_lock
, flags
);
4256 switch (data
->reg_num
) {
4258 if (mii_reg
& MII_CR_POWER_DOWN
)
4260 if (netif_running(adapter
->netdev
))
4261 e1000_reinit_locked(adapter
);
4263 e1000_reset(adapter
);
4267 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4272 return E1000_SUCCESS
;
4276 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4278 struct e1000_adapter
*adapter
= hw
->back
;
4279 int ret_val
= pci_set_mwi(adapter
->pdev
);
4282 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4286 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4288 struct e1000_adapter
*adapter
= hw
->back
;
4290 pci_clear_mwi(adapter
->pdev
);
4294 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4296 struct e1000_adapter
*adapter
= hw
->back
;
4298 pci_read_config_word(adapter
->pdev
, reg
, value
);
4302 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4304 struct e1000_adapter
*adapter
= hw
->back
;
4306 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4310 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4316 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4322 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4324 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4325 uint32_t ctrl
, rctl
;
4327 e1000_irq_disable(adapter
);
4328 adapter
->vlgrp
= grp
;
4331 /* enable VLAN tag insert/strip */
4332 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4333 ctrl
|= E1000_CTRL_VME
;
4334 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4336 /* enable VLAN receive filtering */
4337 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4338 rctl
|= E1000_RCTL_VFE
;
4339 rctl
&= ~E1000_RCTL_CFIEN
;
4340 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4341 e1000_update_mng_vlan(adapter
);
4343 /* disable VLAN tag insert/strip */
4344 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4345 ctrl
&= ~E1000_CTRL_VME
;
4346 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4348 /* disable VLAN filtering */
4349 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4350 rctl
&= ~E1000_RCTL_VFE
;
4351 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4352 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4353 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4354 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4358 e1000_irq_enable(adapter
);
4362 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4364 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4365 uint32_t vfta
, index
;
4367 if ((adapter
->hw
.mng_cookie
.status
&
4368 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4369 (vid
== adapter
->mng_vlan_id
))
4371 /* add VID to filter table */
4372 index
= (vid
>> 5) & 0x7F;
4373 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4374 vfta
|= (1 << (vid
& 0x1F));
4375 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4379 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4381 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4382 uint32_t vfta
, index
;
4384 e1000_irq_disable(adapter
);
4387 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4389 e1000_irq_enable(adapter
);
4391 if ((adapter
->hw
.mng_cookie
.status
&
4392 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4393 (vid
== adapter
->mng_vlan_id
)) {
4394 /* release control to f/w */
4395 e1000_release_hw_control(adapter
);
4399 /* remove VID from filter table */
4400 index
= (vid
>> 5) & 0x7F;
4401 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4402 vfta
&= ~(1 << (vid
& 0x1F));
4403 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4407 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4409 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4411 if (adapter
->vlgrp
) {
4413 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4414 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4416 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4422 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4424 adapter
->hw
.autoneg
= 0;
4426 /* Fiber NICs only allow 1000 gbps Full duplex */
4427 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4428 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4429 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4434 case SPEED_10
+ DUPLEX_HALF
:
4435 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4437 case SPEED_10
+ DUPLEX_FULL
:
4438 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4440 case SPEED_100
+ DUPLEX_HALF
:
4441 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4443 case SPEED_100
+ DUPLEX_FULL
:
4444 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4446 case SPEED_1000
+ DUPLEX_FULL
:
4447 adapter
->hw
.autoneg
= 1;
4448 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4450 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4452 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4459 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4460 * bus we're on (PCI(X) vs. PCI-E)
4462 #define PCIE_CONFIG_SPACE_LEN 256
4463 #define PCI_CONFIG_SPACE_LEN 64
4465 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4467 struct pci_dev
*dev
= adapter
->pdev
;
4471 if (adapter
->hw
.mac_type
>= e1000_82571
)
4472 size
= PCIE_CONFIG_SPACE_LEN
;
4474 size
= PCI_CONFIG_SPACE_LEN
;
4476 WARN_ON(adapter
->config_space
!= NULL
);
4478 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4479 if (!adapter
->config_space
) {
4480 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4483 for (i
= 0; i
< (size
/ 4); i
++)
4484 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4489 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4491 struct pci_dev
*dev
= adapter
->pdev
;
4495 if (adapter
->config_space
== NULL
)
4498 if (adapter
->hw
.mac_type
>= e1000_82571
)
4499 size
= PCIE_CONFIG_SPACE_LEN
;
4501 size
= PCI_CONFIG_SPACE_LEN
;
4502 for (i
= 0; i
< (size
/ 4); i
++)
4503 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4504 kfree(adapter
->config_space
);
4505 adapter
->config_space
= NULL
;
4508 #endif /* CONFIG_PM */
4511 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4513 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4514 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4515 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4516 uint32_t wufc
= adapter
->wol
;
4521 netif_device_detach(netdev
);
4523 if (netif_running(netdev
)) {
4524 WARN_ON(test_bit(__E1000_RESETTING
, &adapter
->flags
));
4525 e1000_down(adapter
);
4529 /* Implement our own version of pci_save_state(pdev) because pci-
4530 * express adapters have 256-byte config spaces. */
4531 retval
= e1000_pci_save_state(adapter
);
4536 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4537 if (status
& E1000_STATUS_LU
)
4538 wufc
&= ~E1000_WUFC_LNKC
;
4541 e1000_setup_rctl(adapter
);
4542 e1000_set_multi(netdev
);
4544 /* turn on all-multi mode if wake on multicast is enabled */
4545 if (adapter
->wol
& E1000_WUFC_MC
) {
4546 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4547 rctl
|= E1000_RCTL_MPE
;
4548 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4551 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4552 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4553 /* advertise wake from D3Cold */
4554 #define E1000_CTRL_ADVD3WUC 0x00100000
4555 /* phy power management enable */
4556 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4557 ctrl
|= E1000_CTRL_ADVD3WUC
|
4558 E1000_CTRL_EN_PHY_PWR_MGMT
;
4559 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4562 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4563 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4564 /* keep the laser running in D3 */
4565 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4566 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4567 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4570 /* Allow time for pending master requests to run */
4571 e1000_disable_pciex_master(&adapter
->hw
);
4573 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4574 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4575 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4576 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4578 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4579 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4580 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4581 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4584 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4585 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4586 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4587 if (manc
& E1000_MANC_SMBUS_EN
) {
4588 manc
|= E1000_MANC_ARP_EN
;
4589 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4590 pci_enable_wake(pdev
, PCI_D3hot
, 1);
4591 pci_enable_wake(pdev
, PCI_D3cold
, 1);
4595 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4596 * would have already happened in close and is redundant. */
4597 e1000_release_hw_control(adapter
);
4599 pci_disable_device(pdev
);
4601 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4608 e1000_resume(struct pci_dev
*pdev
)
4610 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4611 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4612 uint32_t manc
, ret_val
;
4614 pci_set_power_state(pdev
, PCI_D0
);
4615 e1000_pci_restore_state(adapter
);
4616 ret_val
= pci_enable_device(pdev
);
4617 pci_set_master(pdev
);
4619 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4620 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4622 e1000_reset(adapter
);
4623 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4625 if (netif_running(netdev
))
4628 netif_device_attach(netdev
);
4630 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4631 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4632 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4633 manc
&= ~(E1000_MANC_ARP_EN
);
4634 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4637 /* If the controller is 82573 and f/w is AMT, do not set
4638 * DRV_LOAD until the interface is up. For all other cases,
4639 * let the f/w know that the h/w is now under the control
4641 if (adapter
->hw
.mac_type
!= e1000_82573
||
4642 !e1000_check_mng_mode(&adapter
->hw
))
4643 e1000_get_hw_control(adapter
);
4649 static void e1000_shutdown(struct pci_dev
*pdev
)
4651 e1000_suspend(pdev
, PMSG_SUSPEND
);
4654 #ifdef CONFIG_NET_POLL_CONTROLLER
4656 * Polling 'interrupt' - used by things like netconsole to send skbs
4657 * without having to re-enable interrupts. It's not called while
4658 * the interrupt routine is executing.
4661 e1000_netpoll(struct net_device
*netdev
)
4663 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4664 disable_irq(adapter
->pdev
->irq
);
4665 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4666 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4667 #ifndef CONFIG_E1000_NAPI
4668 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4670 enable_irq(adapter
->pdev
->irq
);
4675 * e1000_io_error_detected - called when PCI error is detected
4676 * @pdev: Pointer to PCI device
4677 * @state: The current pci conneection state
4679 * This function is called after a PCI bus error affecting
4680 * this device has been detected.
4682 static pci_ers_result_t
e1000_io_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
4684 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4685 struct e1000_adapter
*adapter
= netdev
->priv
;
4687 netif_device_detach(netdev
);
4689 if (netif_running(netdev
))
4690 e1000_down(adapter
);
4692 /* Request a slot slot reset. */
4693 return PCI_ERS_RESULT_NEED_RESET
;
4697 * e1000_io_slot_reset - called after the pci bus has been reset.
4698 * @pdev: Pointer to PCI device
4700 * Restart the card from scratch, as if from a cold-boot. Implementation
4701 * resembles the first-half of the e1000_resume routine.
4703 static pci_ers_result_t
e1000_io_slot_reset(struct pci_dev
*pdev
)
4705 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4706 struct e1000_adapter
*adapter
= netdev
->priv
;
4708 if (pci_enable_device(pdev
)) {
4709 printk(KERN_ERR
"e1000: Cannot re-enable PCI device after reset.\n");
4710 return PCI_ERS_RESULT_DISCONNECT
;
4712 pci_set_master(pdev
);
4714 pci_enable_wake(pdev
, 3, 0);
4715 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4717 /* Perform card reset only on one instance of the card */
4718 if (PCI_FUNC (pdev
->devfn
) != 0)
4719 return PCI_ERS_RESULT_RECOVERED
;
4721 e1000_reset(adapter
);
4722 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4724 return PCI_ERS_RESULT_RECOVERED
;
4728 * e1000_io_resume - called when traffic can start flowing again.
4729 * @pdev: Pointer to PCI device
4731 * This callback is called when the error recovery driver tells us that
4732 * its OK to resume normal operation. Implementation resembles the
4733 * second-half of the e1000_resume routine.
4735 static void e1000_io_resume(struct pci_dev
*pdev
)
4737 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4738 struct e1000_adapter
*adapter
= netdev
->priv
;
4739 uint32_t manc
, swsm
;
4741 if (netif_running(netdev
)) {
4742 if (e1000_up(adapter
)) {
4743 printk("e1000: can't bring device back up after reset\n");
4748 netif_device_attach(netdev
);
4750 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4751 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4752 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4753 manc
&= ~(E1000_MANC_ARP_EN
);
4754 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4757 switch (adapter
->hw
.mac_type
) {
4759 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4760 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4761 swsm
| E1000_SWSM_DRV_LOAD
);
4767 if (netif_running(netdev
))
4768 mod_timer(&adapter
->watchdog_timer
, jiffies
);