1 /*******************************************************************************
4 Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
33 * o incorporate fix for recycled skbs from IBM LTC
35 * o Honor eeprom setting for enabling/disabling Wake On Lan
37 * o Fix memory leak in rx ring handling for PCI Express adapters
39 * o Patch from Jesper Juhl to remove redundant NULL checks for kfree
41 * o Render logic that sets/resets DRV_LOAD as inline functions to
42 * avoid code replication. If f/w is AMT then set DRV_LOAD only when
43 * network interface is open.
44 * o Handle DRV_LOAD set/reset in cases where AMT uses VLANs.
45 * o Adjust PBA partioning for Jumbo frames using MTU size and not
48 * o Use adapter->tx_timeout_factor in Tx Hung Detect logic
50 * o Support for 8086:10B5 device (Quad Port)
52 * o In AMT enabled configurations, set/reset DRV_LOAD bit on interface
55 * o Invoke e1000_check_mng_mode only for 8257x controllers since it
56 * accesses the FWSM that is not supported in other controllers
58 * o Add support for device id E1000_DEV_ID_82546GB_QUAD_COPPER
59 * o set RCTL:SECRC only for controllers newer than 82543.
60 * o When the n/w interface comes down reset DRV_LOAD bit to notify f/w.
61 * This code was moved from e1000_remove to e1000_close
63 * o Fix error in updating RDT in el1000_alloc_rx_buffers[_ps] -- one off.
64 * o Enable fc by default on 82573 controllers (do not read eeprom)
65 * o Fix rx_errors statistic not to include missed_packet_count
66 * o Fix rx_dropped statistic not to include missed_packet_count
69 * o Remove call to update statistics from the controller ib e1000_get_stats
71 * o Improved algorithm for rx buffer allocation/rdt update
72 * o Flow control watermarks relative to rx PBA size
73 * o Simplified 'Tx Hung' detect logic
75 * o Report rx buffer allocation failures and tx timeout counts in stats
77 * o Implement workaround for controller erratum -- linear non-tso packet
78 * following a TSO gets written back prematurely
80 * o Set netdev->tx_queue_len based on link speed/duplex settings.
81 * o Fix net_stats.rx_fifo_errors <p@draigBrady.com>
82 * o Do not power off PHY if SoL/IDER session is active
84 * o Fix loopback test setup/cleanup for 82571/3 controllers
85 * o Fix parsing of outgoing packets (e1000_transfer_dhcp_info) to treat
87 * o Prevent operations that will cause the PHY to be reset if SoL/IDER
88 * sessions are active and log a message
90 * o used fixed size descriptors for all MTU sizes, reduces memory load
92 * o Fixed ethtool diagnostics
93 * o Enabled flow control to take default eeprom settings
94 * o Added stats_lock around e1000_read_phy_reg commands to avoid concurrent
95 * calls, one from mii_ioctl and other from within update_stats while
96 * processing MIIREG ioctl.
99 char e1000_driver_name
[] = "e1000";
100 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
101 #ifndef CONFIG_E1000_NAPI
104 #define DRIVERNAPI "-NAPI"
106 #define DRV_VERSION "7.0.33-k2"DRIVERNAPI
107 char e1000_driver_version
[] = DRV_VERSION
;
108 static char e1000_copyright
[] = "Copyright (c) 1999-2005 Intel Corporation.";
110 /* e1000_pci_tbl - PCI Device ID Table
112 * Last entry must be all 0s
114 * Macro expands to...
115 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
117 static struct pci_device_id e1000_pci_tbl
[] = {
118 INTEL_E1000_ETHERNET_DEVICE(0x1000),
119 INTEL_E1000_ETHERNET_DEVICE(0x1001),
120 INTEL_E1000_ETHERNET_DEVICE(0x1004),
121 INTEL_E1000_ETHERNET_DEVICE(0x1008),
122 INTEL_E1000_ETHERNET_DEVICE(0x1009),
123 INTEL_E1000_ETHERNET_DEVICE(0x100C),
124 INTEL_E1000_ETHERNET_DEVICE(0x100D),
125 INTEL_E1000_ETHERNET_DEVICE(0x100E),
126 INTEL_E1000_ETHERNET_DEVICE(0x100F),
127 INTEL_E1000_ETHERNET_DEVICE(0x1010),
128 INTEL_E1000_ETHERNET_DEVICE(0x1011),
129 INTEL_E1000_ETHERNET_DEVICE(0x1012),
130 INTEL_E1000_ETHERNET_DEVICE(0x1013),
131 INTEL_E1000_ETHERNET_DEVICE(0x1014),
132 INTEL_E1000_ETHERNET_DEVICE(0x1015),
133 INTEL_E1000_ETHERNET_DEVICE(0x1016),
134 INTEL_E1000_ETHERNET_DEVICE(0x1017),
135 INTEL_E1000_ETHERNET_DEVICE(0x1018),
136 INTEL_E1000_ETHERNET_DEVICE(0x1019),
137 INTEL_E1000_ETHERNET_DEVICE(0x101A),
138 INTEL_E1000_ETHERNET_DEVICE(0x101D),
139 INTEL_E1000_ETHERNET_DEVICE(0x101E),
140 INTEL_E1000_ETHERNET_DEVICE(0x1026),
141 INTEL_E1000_ETHERNET_DEVICE(0x1027),
142 INTEL_E1000_ETHERNET_DEVICE(0x1028),
143 INTEL_E1000_ETHERNET_DEVICE(0x105E),
144 INTEL_E1000_ETHERNET_DEVICE(0x105F),
145 INTEL_E1000_ETHERNET_DEVICE(0x1060),
146 INTEL_E1000_ETHERNET_DEVICE(0x1075),
147 INTEL_E1000_ETHERNET_DEVICE(0x1076),
148 INTEL_E1000_ETHERNET_DEVICE(0x1077),
149 INTEL_E1000_ETHERNET_DEVICE(0x1078),
150 INTEL_E1000_ETHERNET_DEVICE(0x1079),
151 INTEL_E1000_ETHERNET_DEVICE(0x107A),
152 INTEL_E1000_ETHERNET_DEVICE(0x107B),
153 INTEL_E1000_ETHERNET_DEVICE(0x107C),
154 INTEL_E1000_ETHERNET_DEVICE(0x107D),
155 INTEL_E1000_ETHERNET_DEVICE(0x107E),
156 INTEL_E1000_ETHERNET_DEVICE(0x107F),
157 INTEL_E1000_ETHERNET_DEVICE(0x108A),
158 INTEL_E1000_ETHERNET_DEVICE(0x108B),
159 INTEL_E1000_ETHERNET_DEVICE(0x108C),
160 INTEL_E1000_ETHERNET_DEVICE(0x1099),
161 INTEL_E1000_ETHERNET_DEVICE(0x109A),
162 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
163 /* required last entry */
167 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
169 int e1000_up(struct e1000_adapter
*adapter
);
170 void e1000_down(struct e1000_adapter
*adapter
);
171 void e1000_reset(struct e1000_adapter
*adapter
);
172 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
173 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
174 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
175 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
176 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
177 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
178 struct e1000_tx_ring
*txdr
);
179 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
180 struct e1000_rx_ring
*rxdr
);
181 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
182 struct e1000_tx_ring
*tx_ring
);
183 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
184 struct e1000_rx_ring
*rx_ring
);
185 void e1000_update_stats(struct e1000_adapter
*adapter
);
187 /* Local Function Prototypes */
189 static int e1000_init_module(void);
190 static void e1000_exit_module(void);
191 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
192 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
193 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
194 static int e1000_sw_init(struct e1000_adapter
*adapter
);
195 static int e1000_open(struct net_device
*netdev
);
196 static int e1000_close(struct net_device
*netdev
);
197 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
198 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
199 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
200 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
201 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
202 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
203 struct e1000_tx_ring
*tx_ring
);
204 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
205 struct e1000_rx_ring
*rx_ring
);
206 static void e1000_set_multi(struct net_device
*netdev
);
207 static void e1000_update_phy_info(unsigned long data
);
208 static void e1000_watchdog(unsigned long data
);
209 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
210 static void e1000_82547_tx_fifo_stall(unsigned long data
);
211 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
212 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
213 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
214 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
215 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
216 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
217 struct e1000_tx_ring
*tx_ring
);
218 #ifdef CONFIG_E1000_NAPI
219 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
220 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
221 struct e1000_rx_ring
*rx_ring
,
222 int *work_done
, int work_to_do
);
223 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
224 struct e1000_rx_ring
*rx_ring
,
225 int *work_done
, int work_to_do
);
227 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
228 struct e1000_rx_ring
*rx_ring
);
229 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
230 struct e1000_rx_ring
*rx_ring
);
232 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
233 struct e1000_rx_ring
*rx_ring
,
235 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
236 struct e1000_rx_ring
*rx_ring
,
238 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
239 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
241 void e1000_set_ethtool_ops(struct net_device
*netdev
);
242 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
243 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
244 static void e1000_tx_timeout(struct net_device
*dev
);
245 static void e1000_tx_timeout_task(struct net_device
*dev
);
246 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
247 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
248 struct sk_buff
*skb
);
250 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
251 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
252 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
253 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
256 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
257 static int e1000_resume(struct pci_dev
*pdev
);
260 #ifdef CONFIG_NET_POLL_CONTROLLER
261 /* for netdump / net console */
262 static void e1000_netpoll (struct net_device
*netdev
);
266 /* Exported from other modules */
268 extern void e1000_check_options(struct e1000_adapter
*adapter
);
270 static struct pci_driver e1000_driver
= {
271 .name
= e1000_driver_name
,
272 .id_table
= e1000_pci_tbl
,
273 .probe
= e1000_probe
,
274 .remove
= __devexit_p(e1000_remove
),
275 /* Power Managment Hooks */
277 .suspend
= e1000_suspend
,
278 .resume
= e1000_resume
282 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
283 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
284 MODULE_LICENSE("GPL");
285 MODULE_VERSION(DRV_VERSION
);
287 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
288 module_param(debug
, int, 0);
289 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
292 * e1000_init_module - Driver Registration Routine
294 * e1000_init_module is the first routine called when the driver is
295 * loaded. All it does is register with the PCI subsystem.
299 e1000_init_module(void)
302 printk(KERN_INFO
"%s - version %s\n",
303 e1000_driver_string
, e1000_driver_version
);
305 printk(KERN_INFO
"%s\n", e1000_copyright
);
307 ret
= pci_module_init(&e1000_driver
);
312 module_init(e1000_init_module
);
315 * e1000_exit_module - Driver Exit Cleanup Routine
317 * e1000_exit_module is called just before the driver is removed
322 e1000_exit_module(void)
324 pci_unregister_driver(&e1000_driver
);
327 module_exit(e1000_exit_module
);
330 * e1000_irq_disable - Mask off interrupt generation on the NIC
331 * @adapter: board private structure
335 e1000_irq_disable(struct e1000_adapter
*adapter
)
337 atomic_inc(&adapter
->irq_sem
);
338 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
339 E1000_WRITE_FLUSH(&adapter
->hw
);
340 synchronize_irq(adapter
->pdev
->irq
);
344 * e1000_irq_enable - Enable default interrupt generation settings
345 * @adapter: board private structure
349 e1000_irq_enable(struct e1000_adapter
*adapter
)
351 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
352 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
353 E1000_WRITE_FLUSH(&adapter
->hw
);
358 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
360 struct net_device
*netdev
= adapter
->netdev
;
361 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
362 uint16_t old_vid
= adapter
->mng_vlan_id
;
363 if (adapter
->vlgrp
) {
364 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
365 if (adapter
->hw
.mng_cookie
.status
&
366 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
367 e1000_vlan_rx_add_vid(netdev
, vid
);
368 adapter
->mng_vlan_id
= vid
;
370 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
372 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
374 !adapter
->vlgrp
->vlan_devices
[old_vid
])
375 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
381 * e1000_release_hw_control - release control of the h/w to f/w
382 * @adapter: address of board private structure
384 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
385 * For ASF and Pass Through versions of f/w this means that the
386 * driver is no longer loaded. For AMT version (only with 82573) i
387 * of the f/w this means that the netowrk i/f is closed.
392 e1000_release_hw_control(struct e1000_adapter
*adapter
)
397 /* Let firmware taken over control of h/w */
398 switch (adapter
->hw
.mac_type
) {
401 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
402 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
403 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
406 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
407 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
408 swsm
& ~E1000_SWSM_DRV_LOAD
);
415 * e1000_get_hw_control - get control of the h/w from f/w
416 * @adapter: address of board private structure
418 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
419 * For ASF and Pass Through versions of f/w this means that
420 * the driver is loaded. For AMT version (only with 82573)
421 * of the f/w this means that the netowrk i/f is open.
426 e1000_get_hw_control(struct e1000_adapter
*adapter
)
430 /* Let firmware know the driver has taken over */
431 switch (adapter
->hw
.mac_type
) {
434 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
435 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
436 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
439 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
440 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
441 swsm
| E1000_SWSM_DRV_LOAD
);
449 e1000_up(struct e1000_adapter
*adapter
)
451 struct net_device
*netdev
= adapter
->netdev
;
454 /* hardware has been reset, we need to reload some things */
456 /* Reset the PHY if it was previously powered down */
457 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
459 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
460 if (mii_reg
& MII_CR_POWER_DOWN
)
461 e1000_phy_reset(&adapter
->hw
);
464 e1000_set_multi(netdev
);
466 e1000_restore_vlan(adapter
);
468 e1000_configure_tx(adapter
);
469 e1000_setup_rctl(adapter
);
470 e1000_configure_rx(adapter
);
471 /* call E1000_DESC_UNUSED which always leaves
472 * at least 1 descriptor unused to make sure
473 * next_to_use != next_to_clean */
474 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
475 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
476 adapter
->alloc_rx_buf(adapter
, ring
,
477 E1000_DESC_UNUSED(ring
));
480 #ifdef CONFIG_PCI_MSI
481 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
482 adapter
->have_msi
= TRUE
;
483 if ((err
= pci_enable_msi(adapter
->pdev
))) {
485 "Unable to allocate MSI interrupt Error: %d\n", err
);
486 adapter
->have_msi
= FALSE
;
490 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
491 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
492 netdev
->name
, netdev
))) {
494 "Unable to allocate interrupt Error: %d\n", err
);
498 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
500 mod_timer(&adapter
->watchdog_timer
, jiffies
);
502 #ifdef CONFIG_E1000_NAPI
503 netif_poll_enable(netdev
);
505 e1000_irq_enable(adapter
);
511 e1000_down(struct e1000_adapter
*adapter
)
513 struct net_device
*netdev
= adapter
->netdev
;
514 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
515 e1000_check_mng_mode(&adapter
->hw
);
517 e1000_irq_disable(adapter
);
519 free_irq(adapter
->pdev
->irq
, netdev
);
520 #ifdef CONFIG_PCI_MSI
521 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
522 adapter
->have_msi
== TRUE
)
523 pci_disable_msi(adapter
->pdev
);
525 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
526 del_timer_sync(&adapter
->watchdog_timer
);
527 del_timer_sync(&adapter
->phy_info_timer
);
529 #ifdef CONFIG_E1000_NAPI
530 netif_poll_disable(netdev
);
532 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
533 adapter
->link_speed
= 0;
534 adapter
->link_duplex
= 0;
535 netif_carrier_off(netdev
);
536 netif_stop_queue(netdev
);
538 e1000_reset(adapter
);
539 e1000_clean_all_tx_rings(adapter
);
540 e1000_clean_all_rx_rings(adapter
);
542 /* Power down the PHY so no link is implied when interface is down *
543 * The PHY cannot be powered down if any of the following is TRUE *
546 * (c) SoL/IDER session is active */
547 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
548 adapter
->hw
.media_type
== e1000_media_type_copper
&&
549 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
551 !e1000_check_phy_reset_block(&adapter
->hw
)) {
553 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
554 mii_reg
|= MII_CR_POWER_DOWN
;
555 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
561 e1000_reset(struct e1000_adapter
*adapter
)
564 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
566 /* Repartition Pba for greater than 9k mtu
567 * To take effect CTRL.RST is required.
570 switch (adapter
->hw
.mac_type
) {
572 case e1000_82547_rev_2
:
587 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
588 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
589 pba
-= 8; /* allocate more FIFO for Tx */
592 if (adapter
->hw
.mac_type
== e1000_82547
) {
593 adapter
->tx_fifo_head
= 0;
594 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
595 adapter
->tx_fifo_size
=
596 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
597 atomic_set(&adapter
->tx_fifo_stall
, 0);
600 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
602 /* flow control settings */
603 /* Set the FC high water mark to 90% of the FIFO size.
604 * Required to clear last 3 LSB */
605 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
607 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
608 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
609 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
610 adapter
->hw
.fc_send_xon
= 1;
611 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
613 /* Allow time for pending master requests to run */
614 e1000_reset_hw(&adapter
->hw
);
615 if (adapter
->hw
.mac_type
>= e1000_82544
)
616 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
617 if (e1000_init_hw(&adapter
->hw
))
618 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
619 e1000_update_mng_vlan(adapter
);
620 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
621 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
623 e1000_reset_adaptive(&adapter
->hw
);
624 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
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 int i
, err
, pci_using_dac
;
654 uint16_t eeprom_data
;
655 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
656 if ((err
= pci_enable_device(pdev
)))
659 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
662 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
663 E1000_ERR("No usable DMA configuration, aborting\n");
669 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
672 pci_set_master(pdev
);
674 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
677 goto err_alloc_etherdev
;
680 SET_MODULE_OWNER(netdev
);
681 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
683 pci_set_drvdata(pdev
, netdev
);
684 adapter
= netdev_priv(netdev
);
685 adapter
->netdev
= netdev
;
686 adapter
->pdev
= pdev
;
687 adapter
->hw
.back
= adapter
;
688 adapter
->msg_enable
= (1 << debug
) - 1;
690 mmio_start
= pci_resource_start(pdev
, BAR_0
);
691 mmio_len
= pci_resource_len(pdev
, BAR_0
);
693 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
694 if (!adapter
->hw
.hw_addr
) {
699 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
700 if (pci_resource_len(pdev
, i
) == 0)
702 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
703 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
708 netdev
->open
= &e1000_open
;
709 netdev
->stop
= &e1000_close
;
710 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
711 netdev
->get_stats
= &e1000_get_stats
;
712 netdev
->set_multicast_list
= &e1000_set_multi
;
713 netdev
->set_mac_address
= &e1000_set_mac
;
714 netdev
->change_mtu
= &e1000_change_mtu
;
715 netdev
->do_ioctl
= &e1000_ioctl
;
716 e1000_set_ethtool_ops(netdev
);
717 netdev
->tx_timeout
= &e1000_tx_timeout
;
718 netdev
->watchdog_timeo
= 5 * HZ
;
719 #ifdef CONFIG_E1000_NAPI
720 netdev
->poll
= &e1000_clean
;
723 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
724 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
725 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
726 #ifdef CONFIG_NET_POLL_CONTROLLER
727 netdev
->poll_controller
= e1000_netpoll
;
729 strcpy(netdev
->name
, pci_name(pdev
));
731 netdev
->mem_start
= mmio_start
;
732 netdev
->mem_end
= mmio_start
+ mmio_len
;
733 netdev
->base_addr
= adapter
->hw
.io_base
;
735 adapter
->bd_number
= cards_found
;
737 /* setup the private structure */
739 if ((err
= e1000_sw_init(adapter
)))
742 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
743 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
745 if (adapter
->hw
.mac_type
>= e1000_82543
) {
746 netdev
->features
= NETIF_F_SG
|
750 NETIF_F_HW_VLAN_FILTER
;
754 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
755 (adapter
->hw
.mac_type
!= e1000_82547
))
756 netdev
->features
|= NETIF_F_TSO
;
758 #ifdef NETIF_F_TSO_IPV6
759 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
760 netdev
->features
|= NETIF_F_TSO_IPV6
;
764 netdev
->features
|= NETIF_F_HIGHDMA
;
766 /* hard_start_xmit is safe against parallel locking */
767 netdev
->features
|= NETIF_F_LLTX
;
769 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
771 /* before reading the EEPROM, reset the controller to
772 * put the device in a known good starting state */
774 e1000_reset_hw(&adapter
->hw
);
776 /* make sure the EEPROM is good */
778 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
779 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
784 /* copy the MAC address out of the EEPROM */
786 if (e1000_read_mac_addr(&adapter
->hw
))
787 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
788 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
789 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
791 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
792 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
797 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
799 e1000_get_bus_info(&adapter
->hw
);
801 init_timer(&adapter
->tx_fifo_stall_timer
);
802 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
803 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
805 init_timer(&adapter
->watchdog_timer
);
806 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
807 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
809 INIT_WORK(&adapter
->watchdog_task
,
810 (void (*)(void *))e1000_watchdog_task
, adapter
);
812 init_timer(&adapter
->phy_info_timer
);
813 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
814 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
816 INIT_WORK(&adapter
->tx_timeout_task
,
817 (void (*)(void *))e1000_tx_timeout_task
, netdev
);
819 /* we're going to reset, so assume we have no link for now */
821 netif_carrier_off(netdev
);
822 netif_stop_queue(netdev
);
824 e1000_check_options(adapter
);
826 /* Initial Wake on LAN setting
827 * If APM wake is enabled in the EEPROM,
828 * enable the ACPI Magic Packet filter
831 switch (adapter
->hw
.mac_type
) {
832 case e1000_82542_rev2_0
:
833 case e1000_82542_rev2_1
:
837 e1000_read_eeprom(&adapter
->hw
,
838 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
839 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
842 case e1000_82546_rev_3
:
844 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
845 e1000_read_eeprom(&adapter
->hw
,
846 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
851 e1000_read_eeprom(&adapter
->hw
,
852 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
855 if (eeprom_data
& eeprom_apme_mask
)
856 adapter
->wol
|= E1000_WUFC_MAG
;
858 /* print bus type/speed/width info */
860 struct e1000_hw
*hw
= &adapter
->hw
;
861 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
862 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
863 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
864 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
865 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
866 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
867 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
868 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
869 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
870 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
871 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
875 for (i
= 0; i
< 6; i
++)
876 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
878 /* reset the hardware with the new settings */
879 e1000_reset(adapter
);
881 /* If the controller is 82573 and f/w is AMT, do not set
882 * DRV_LOAD until the interface is up. For all other cases,
883 * let the f/w know that the h/w is now under the control
885 if (adapter
->hw
.mac_type
!= e1000_82573
||
886 !e1000_check_mng_mode(&adapter
->hw
))
887 e1000_get_hw_control(adapter
);
889 strcpy(netdev
->name
, "eth%d");
890 if ((err
= register_netdev(netdev
)))
893 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
901 iounmap(adapter
->hw
.hw_addr
);
905 pci_release_regions(pdev
);
910 * e1000_remove - Device Removal Routine
911 * @pdev: PCI device information struct
913 * e1000_remove is called by the PCI subsystem to alert the driver
914 * that it should release a PCI device. The could be caused by a
915 * Hot-Plug event, or because the driver is going to be removed from
919 static void __devexit
920 e1000_remove(struct pci_dev
*pdev
)
922 struct net_device
*netdev
= pci_get_drvdata(pdev
);
923 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
925 #ifdef CONFIG_E1000_NAPI
929 flush_scheduled_work();
931 if (adapter
->hw
.mac_type
>= e1000_82540
&&
932 adapter
->hw
.media_type
== e1000_media_type_copper
) {
933 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
934 if (manc
& E1000_MANC_SMBUS_EN
) {
935 manc
|= E1000_MANC_ARP_EN
;
936 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
940 /* Release control of h/w to f/w. If f/w is AMT enabled, this
941 * would have already happened in close and is redundant. */
942 e1000_release_hw_control(adapter
);
944 unregister_netdev(netdev
);
945 #ifdef CONFIG_E1000_NAPI
946 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
947 __dev_put(&adapter
->polling_netdev
[i
]);
950 if (!e1000_check_phy_reset_block(&adapter
->hw
))
951 e1000_phy_hw_reset(&adapter
->hw
);
953 kfree(adapter
->tx_ring
);
954 kfree(adapter
->rx_ring
);
955 #ifdef CONFIG_E1000_NAPI
956 kfree(adapter
->polling_netdev
);
959 iounmap(adapter
->hw
.hw_addr
);
960 pci_release_regions(pdev
);
964 pci_disable_device(pdev
);
968 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
969 * @adapter: board private structure to initialize
971 * e1000_sw_init initializes the Adapter private data structure.
972 * Fields are initialized based on PCI device information and
973 * OS network device settings (MTU size).
977 e1000_sw_init(struct e1000_adapter
*adapter
)
979 struct e1000_hw
*hw
= &adapter
->hw
;
980 struct net_device
*netdev
= adapter
->netdev
;
981 struct pci_dev
*pdev
= adapter
->pdev
;
982 #ifdef CONFIG_E1000_NAPI
986 /* PCI config space info */
988 hw
->vendor_id
= pdev
->vendor
;
989 hw
->device_id
= pdev
->device
;
990 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
991 hw
->subsystem_id
= pdev
->subsystem_device
;
993 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
995 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
997 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
998 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
999 hw
->max_frame_size
= netdev
->mtu
+
1000 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1001 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1003 /* identify the MAC */
1005 if (e1000_set_mac_type(hw
)) {
1006 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1010 /* initialize eeprom parameters */
1012 if (e1000_init_eeprom_params(hw
)) {
1013 E1000_ERR("EEPROM initialization failed\n");
1017 switch (hw
->mac_type
) {
1022 case e1000_82541_rev_2
:
1023 case e1000_82547_rev_2
:
1024 hw
->phy_init_script
= 1;
1028 e1000_set_media_type(hw
);
1030 hw
->wait_autoneg_complete
= FALSE
;
1031 hw
->tbi_compatibility_en
= TRUE
;
1032 hw
->adaptive_ifs
= TRUE
;
1034 /* Copper options */
1036 if (hw
->media_type
== e1000_media_type_copper
) {
1037 hw
->mdix
= AUTO_ALL_MODES
;
1038 hw
->disable_polarity_correction
= FALSE
;
1039 hw
->master_slave
= E1000_MASTER_SLAVE
;
1042 adapter
->num_tx_queues
= 1;
1043 adapter
->num_rx_queues
= 1;
1045 if (e1000_alloc_queues(adapter
)) {
1046 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1050 #ifdef CONFIG_E1000_NAPI
1051 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1052 adapter
->polling_netdev
[i
].priv
= adapter
;
1053 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1054 adapter
->polling_netdev
[i
].weight
= 64;
1055 dev_hold(&adapter
->polling_netdev
[i
]);
1056 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1058 spin_lock_init(&adapter
->tx_queue_lock
);
1061 atomic_set(&adapter
->irq_sem
, 1);
1062 spin_lock_init(&adapter
->stats_lock
);
1068 * e1000_alloc_queues - Allocate memory for all rings
1069 * @adapter: board private structure to initialize
1071 * We allocate one ring per queue at run-time since we don't know the
1072 * number of queues at compile-time. The polling_netdev array is
1073 * intended for Multiqueue, but should work fine with a single queue.
1076 static int __devinit
1077 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1081 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1082 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1083 if (!adapter
->tx_ring
)
1085 memset(adapter
->tx_ring
, 0, size
);
1087 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1088 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1089 if (!adapter
->rx_ring
) {
1090 kfree(adapter
->tx_ring
);
1093 memset(adapter
->rx_ring
, 0, size
);
1095 #ifdef CONFIG_E1000_NAPI
1096 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1097 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1098 if (!adapter
->polling_netdev
) {
1099 kfree(adapter
->tx_ring
);
1100 kfree(adapter
->rx_ring
);
1103 memset(adapter
->polling_netdev
, 0, size
);
1106 return E1000_SUCCESS
;
1110 * e1000_open - Called when a network interface is made active
1111 * @netdev: network interface device structure
1113 * Returns 0 on success, negative value on failure
1115 * The open entry point is called when a network interface is made
1116 * active by the system (IFF_UP). At this point all resources needed
1117 * for transmit and receive operations are allocated, the interrupt
1118 * handler is registered with the OS, the watchdog timer is started,
1119 * and the stack is notified that the interface is ready.
1123 e1000_open(struct net_device
*netdev
)
1125 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1128 /* allocate transmit descriptors */
1130 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1133 /* allocate receive descriptors */
1135 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1138 if ((err
= e1000_up(adapter
)))
1140 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1141 if ((adapter
->hw
.mng_cookie
.status
&
1142 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1143 e1000_update_mng_vlan(adapter
);
1146 /* If AMT is enabled, let the firmware know that the network
1147 * interface is now open */
1148 if (adapter
->hw
.mac_type
== e1000_82573
&&
1149 e1000_check_mng_mode(&adapter
->hw
))
1150 e1000_get_hw_control(adapter
);
1152 return E1000_SUCCESS
;
1155 e1000_free_all_rx_resources(adapter
);
1157 e1000_free_all_tx_resources(adapter
);
1159 e1000_reset(adapter
);
1165 * e1000_close - Disables a network interface
1166 * @netdev: network interface device structure
1168 * Returns 0, this is not allowed to fail
1170 * The close entry point is called when an interface is de-activated
1171 * by the OS. The hardware is still under the drivers control, but
1172 * needs to be disabled. A global MAC reset is issued to stop the
1173 * hardware, and all transmit and receive resources are freed.
1177 e1000_close(struct net_device
*netdev
)
1179 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1181 e1000_down(adapter
);
1183 e1000_free_all_tx_resources(adapter
);
1184 e1000_free_all_rx_resources(adapter
);
1186 if ((adapter
->hw
.mng_cookie
.status
&
1187 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1188 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1191 /* If AMT is enabled, let the firmware know that the network
1192 * interface is now closed */
1193 if (adapter
->hw
.mac_type
== e1000_82573
&&
1194 e1000_check_mng_mode(&adapter
->hw
))
1195 e1000_release_hw_control(adapter
);
1201 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1202 * @adapter: address of board private structure
1203 * @start: address of beginning of memory
1204 * @len: length of memory
1206 static inline boolean_t
1207 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1208 void *start
, unsigned long len
)
1210 unsigned long begin
= (unsigned long) start
;
1211 unsigned long end
= begin
+ len
;
1213 /* First rev 82545 and 82546 need to not allow any memory
1214 * write location to cross 64k boundary due to errata 23 */
1215 if (adapter
->hw
.mac_type
== e1000_82545
||
1216 adapter
->hw
.mac_type
== e1000_82546
) {
1217 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1224 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1225 * @adapter: board private structure
1226 * @txdr: tx descriptor ring (for a specific queue) to setup
1228 * Return 0 on success, negative on failure
1232 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1233 struct e1000_tx_ring
*txdr
)
1235 struct pci_dev
*pdev
= adapter
->pdev
;
1238 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1240 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1241 if (!txdr
->buffer_info
) {
1243 "Unable to allocate memory for the transmit descriptor ring\n");
1246 memset(txdr
->buffer_info
, 0, size
);
1248 /* round up to nearest 4K */
1250 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1251 E1000_ROUNDUP(txdr
->size
, 4096);
1253 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1256 vfree(txdr
->buffer_info
);
1258 "Unable to allocate memory for the transmit descriptor ring\n");
1262 /* Fix for errata 23, can't cross 64kB boundary */
1263 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1264 void *olddesc
= txdr
->desc
;
1265 dma_addr_t olddma
= txdr
->dma
;
1266 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1267 "at %p\n", txdr
->size
, txdr
->desc
);
1268 /* Try again, without freeing the previous */
1269 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1270 /* Failed allocation, critical failure */
1272 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1273 goto setup_tx_desc_die
;
1276 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1278 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1280 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1282 "Unable to allocate aligned memory "
1283 "for the transmit descriptor ring\n");
1284 vfree(txdr
->buffer_info
);
1287 /* Free old allocation, new allocation was successful */
1288 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1291 memset(txdr
->desc
, 0, txdr
->size
);
1293 txdr
->next_to_use
= 0;
1294 txdr
->next_to_clean
= 0;
1295 spin_lock_init(&txdr
->tx_lock
);
1301 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1302 * (Descriptors) for all queues
1303 * @adapter: board private structure
1305 * If this function returns with an error, then it's possible one or
1306 * more of the rings is populated (while the rest are not). It is the
1307 * callers duty to clean those orphaned rings.
1309 * Return 0 on success, negative on failure
1313 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1317 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1318 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1321 "Allocation for Tx Queue %u failed\n", i
);
1330 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1331 * @adapter: board private structure
1333 * Configure the Tx unit of the MAC after a reset.
1337 e1000_configure_tx(struct e1000_adapter
*adapter
)
1340 struct e1000_hw
*hw
= &adapter
->hw
;
1341 uint32_t tdlen
, tctl
, tipg
, tarc
;
1342 uint32_t ipgr1
, ipgr2
;
1344 /* Setup the HW Tx Head and Tail descriptor pointers */
1346 switch (adapter
->num_tx_queues
) {
1349 tdba
= adapter
->tx_ring
[0].dma
;
1350 tdlen
= adapter
->tx_ring
[0].count
*
1351 sizeof(struct e1000_tx_desc
);
1352 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1353 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1354 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1355 E1000_WRITE_REG(hw
, TDH
, 0);
1356 E1000_WRITE_REG(hw
, TDT
, 0);
1357 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1358 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1362 /* Set the default values for the Tx Inter Packet Gap timer */
1364 if (hw
->media_type
== e1000_media_type_fiber
||
1365 hw
->media_type
== e1000_media_type_internal_serdes
)
1366 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1368 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1370 switch (hw
->mac_type
) {
1371 case e1000_82542_rev2_0
:
1372 case e1000_82542_rev2_1
:
1373 tipg
= DEFAULT_82542_TIPG_IPGT
;
1374 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1375 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1378 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1379 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1382 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1383 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1384 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1386 /* Set the Tx Interrupt Delay register */
1388 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1389 if (hw
->mac_type
>= e1000_82540
)
1390 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1392 /* Program the Transmit Control Register */
1394 tctl
= E1000_READ_REG(hw
, TCTL
);
1396 tctl
&= ~E1000_TCTL_CT
;
1397 tctl
|= E1000_TCTL_EN
| E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1398 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1400 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1402 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1403 tarc
= E1000_READ_REG(hw
, TARC0
);
1404 tarc
|= ((1 << 25) | (1 << 21));
1405 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1406 tarc
= E1000_READ_REG(hw
, TARC1
);
1408 if (tctl
& E1000_TCTL_MULR
)
1412 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1415 e1000_config_collision_dist(hw
);
1417 /* Setup Transmit Descriptor Settings for eop descriptor */
1418 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1421 if (hw
->mac_type
< e1000_82543
)
1422 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1424 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1426 /* Cache if we're 82544 running in PCI-X because we'll
1427 * need this to apply a workaround later in the send path. */
1428 if (hw
->mac_type
== e1000_82544
&&
1429 hw
->bus_type
== e1000_bus_type_pcix
)
1430 adapter
->pcix_82544
= 1;
1434 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1435 * @adapter: board private structure
1436 * @rxdr: rx descriptor ring (for a specific queue) to setup
1438 * Returns 0 on success, negative on failure
1442 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1443 struct e1000_rx_ring
*rxdr
)
1445 struct pci_dev
*pdev
= adapter
->pdev
;
1448 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1449 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1450 if (!rxdr
->buffer_info
) {
1452 "Unable to allocate memory for the receive descriptor ring\n");
1455 memset(rxdr
->buffer_info
, 0, size
);
1457 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1458 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1459 if (!rxdr
->ps_page
) {
1460 vfree(rxdr
->buffer_info
);
1462 "Unable to allocate memory for the receive descriptor ring\n");
1465 memset(rxdr
->ps_page
, 0, size
);
1467 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1468 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1469 if (!rxdr
->ps_page_dma
) {
1470 vfree(rxdr
->buffer_info
);
1471 kfree(rxdr
->ps_page
);
1473 "Unable to allocate memory for the receive descriptor ring\n");
1476 memset(rxdr
->ps_page_dma
, 0, size
);
1478 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1479 desc_len
= sizeof(struct e1000_rx_desc
);
1481 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1483 /* Round up to nearest 4K */
1485 rxdr
->size
= rxdr
->count
* desc_len
;
1486 E1000_ROUNDUP(rxdr
->size
, 4096);
1488 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1492 "Unable to allocate memory for the receive descriptor ring\n");
1494 vfree(rxdr
->buffer_info
);
1495 kfree(rxdr
->ps_page
);
1496 kfree(rxdr
->ps_page_dma
);
1500 /* Fix for errata 23, can't cross 64kB boundary */
1501 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1502 void *olddesc
= rxdr
->desc
;
1503 dma_addr_t olddma
= rxdr
->dma
;
1504 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1505 "at %p\n", rxdr
->size
, rxdr
->desc
);
1506 /* Try again, without freeing the previous */
1507 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1508 /* Failed allocation, critical failure */
1510 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1512 "Unable to allocate memory "
1513 "for the receive descriptor ring\n");
1514 goto setup_rx_desc_die
;
1517 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1519 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1521 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1523 "Unable to allocate aligned memory "
1524 "for the receive descriptor ring\n");
1525 goto setup_rx_desc_die
;
1527 /* Free old allocation, new allocation was successful */
1528 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1531 memset(rxdr
->desc
, 0, rxdr
->size
);
1533 rxdr
->next_to_clean
= 0;
1534 rxdr
->next_to_use
= 0;
1540 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1541 * (Descriptors) for all queues
1542 * @adapter: board private structure
1544 * If this function returns with an error, then it's possible one or
1545 * more of the rings is populated (while the rest are not). It is the
1546 * callers duty to clean those orphaned rings.
1548 * Return 0 on success, negative on failure
1552 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1556 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1557 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1560 "Allocation for Rx Queue %u failed\n", i
);
1569 * e1000_setup_rctl - configure the receive control registers
1570 * @adapter: Board private structure
1572 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1573 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1575 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1577 uint32_t rctl
, rfctl
;
1578 uint32_t psrctl
= 0;
1579 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1583 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1585 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1587 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1588 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1589 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1591 if (adapter
->hw
.mac_type
> e1000_82543
)
1592 rctl
|= E1000_RCTL_SECRC
;
1594 if (adapter
->hw
.tbi_compatibility_on
== 1)
1595 rctl
|= E1000_RCTL_SBP
;
1597 rctl
&= ~E1000_RCTL_SBP
;
1599 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1600 rctl
&= ~E1000_RCTL_LPE
;
1602 rctl
|= E1000_RCTL_LPE
;
1604 /* Setup buffer sizes */
1605 if (adapter
->hw
.mac_type
>= e1000_82571
) {
1606 /* We can now specify buffers in 1K increments.
1607 * BSIZE and BSEX are ignored in this case. */
1608 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1610 rctl
&= ~E1000_RCTL_SZ_4096
;
1611 rctl
|= E1000_RCTL_BSEX
;
1612 switch (adapter
->rx_buffer_len
) {
1613 case E1000_RXBUFFER_2048
:
1615 rctl
|= E1000_RCTL_SZ_2048
;
1616 rctl
&= ~E1000_RCTL_BSEX
;
1618 case E1000_RXBUFFER_4096
:
1619 rctl
|= E1000_RCTL_SZ_4096
;
1621 case E1000_RXBUFFER_8192
:
1622 rctl
|= E1000_RCTL_SZ_8192
;
1624 case E1000_RXBUFFER_16384
:
1625 rctl
|= E1000_RCTL_SZ_16384
;
1630 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1631 /* 82571 and greater support packet-split where the protocol
1632 * header is placed in skb->data and the packet data is
1633 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1634 * In the case of a non-split, skb->data is linearly filled,
1635 * followed by the page buffers. Therefore, skb->data is
1636 * sized to hold the largest protocol header.
1638 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1639 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1641 adapter
->rx_ps_pages
= pages
;
1643 adapter
->rx_ps_pages
= 0;
1645 if (adapter
->rx_ps_pages
) {
1646 /* Configure extra packet-split registers */
1647 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1648 rfctl
|= E1000_RFCTL_EXTEN
;
1649 /* disable IPv6 packet split support */
1650 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1651 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1653 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1655 psrctl
|= adapter
->rx_ps_bsize0
>>
1656 E1000_PSRCTL_BSIZE0_SHIFT
;
1658 switch (adapter
->rx_ps_pages
) {
1660 psrctl
|= PAGE_SIZE
<<
1661 E1000_PSRCTL_BSIZE3_SHIFT
;
1663 psrctl
|= PAGE_SIZE
<<
1664 E1000_PSRCTL_BSIZE2_SHIFT
;
1666 psrctl
|= PAGE_SIZE
>>
1667 E1000_PSRCTL_BSIZE1_SHIFT
;
1671 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1674 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1678 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1679 * @adapter: board private structure
1681 * Configure the Rx unit of the MAC after a reset.
1685 e1000_configure_rx(struct e1000_adapter
*adapter
)
1688 struct e1000_hw
*hw
= &adapter
->hw
;
1689 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1691 if (adapter
->rx_ps_pages
) {
1692 rdlen
= adapter
->rx_ring
[0].count
*
1693 sizeof(union e1000_rx_desc_packet_split
);
1694 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1695 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1697 rdlen
= adapter
->rx_ring
[0].count
*
1698 sizeof(struct e1000_rx_desc
);
1699 adapter
->clean_rx
= e1000_clean_rx_irq
;
1700 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1703 /* disable receives while setting up the descriptors */
1704 rctl
= E1000_READ_REG(hw
, RCTL
);
1705 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1707 /* set the Receive Delay Timer Register */
1708 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1710 if (hw
->mac_type
>= e1000_82540
) {
1711 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1712 if (adapter
->itr
> 1)
1713 E1000_WRITE_REG(hw
, ITR
,
1714 1000000000 / (adapter
->itr
* 256));
1717 if (hw
->mac_type
>= e1000_82571
) {
1718 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1719 /* Reset delay timers after every interrupt */
1720 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1721 #ifdef CONFIG_E1000_NAPI
1722 /* Auto-Mask interrupts upon ICR read. */
1723 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1725 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1726 E1000_WRITE_REG(hw
, IAM
, ~0);
1727 E1000_WRITE_FLUSH(hw
);
1730 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1731 * the Base and Length of the Rx Descriptor Ring */
1732 switch (adapter
->num_rx_queues
) {
1735 rdba
= adapter
->rx_ring
[0].dma
;
1736 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1737 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1738 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1739 E1000_WRITE_REG(hw
, RDH
, 0);
1740 E1000_WRITE_REG(hw
, RDT
, 0);
1741 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1742 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1746 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1747 if (hw
->mac_type
>= e1000_82543
) {
1748 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1749 if (adapter
->rx_csum
== TRUE
) {
1750 rxcsum
|= E1000_RXCSUM_TUOFL
;
1752 /* Enable 82571 IPv4 payload checksum for UDP fragments
1753 * Must be used in conjunction with packet-split. */
1754 if ((hw
->mac_type
>= e1000_82571
) &&
1755 (adapter
->rx_ps_pages
)) {
1756 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1759 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1760 /* don't need to clear IPPCSE as it defaults to 0 */
1762 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1765 if (hw
->mac_type
== e1000_82573
)
1766 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1768 /* Enable Receives */
1769 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1773 * e1000_free_tx_resources - Free Tx Resources per Queue
1774 * @adapter: board private structure
1775 * @tx_ring: Tx descriptor ring for a specific queue
1777 * Free all transmit software resources
1781 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1782 struct e1000_tx_ring
*tx_ring
)
1784 struct pci_dev
*pdev
= adapter
->pdev
;
1786 e1000_clean_tx_ring(adapter
, tx_ring
);
1788 vfree(tx_ring
->buffer_info
);
1789 tx_ring
->buffer_info
= NULL
;
1791 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1793 tx_ring
->desc
= NULL
;
1797 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1798 * @adapter: board private structure
1800 * Free all transmit software resources
1804 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1808 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1809 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1813 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1814 struct e1000_buffer
*buffer_info
)
1816 if (buffer_info
->dma
) {
1817 pci_unmap_page(adapter
->pdev
,
1819 buffer_info
->length
,
1822 if (buffer_info
->skb
)
1823 dev_kfree_skb_any(buffer_info
->skb
);
1824 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1828 * e1000_clean_tx_ring - Free Tx Buffers
1829 * @adapter: board private structure
1830 * @tx_ring: ring to be cleaned
1834 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1835 struct e1000_tx_ring
*tx_ring
)
1837 struct e1000_buffer
*buffer_info
;
1841 /* Free all the Tx ring sk_buffs */
1843 for (i
= 0; i
< tx_ring
->count
; i
++) {
1844 buffer_info
= &tx_ring
->buffer_info
[i
];
1845 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1848 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1849 memset(tx_ring
->buffer_info
, 0, size
);
1851 /* Zero out the descriptor ring */
1853 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1855 tx_ring
->next_to_use
= 0;
1856 tx_ring
->next_to_clean
= 0;
1857 tx_ring
->last_tx_tso
= 0;
1859 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1860 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1864 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1865 * @adapter: board private structure
1869 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1873 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1874 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1878 * e1000_free_rx_resources - Free Rx Resources
1879 * @adapter: board private structure
1880 * @rx_ring: ring to clean the resources from
1882 * Free all receive software resources
1886 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1887 struct e1000_rx_ring
*rx_ring
)
1889 struct pci_dev
*pdev
= adapter
->pdev
;
1891 e1000_clean_rx_ring(adapter
, rx_ring
);
1893 vfree(rx_ring
->buffer_info
);
1894 rx_ring
->buffer_info
= NULL
;
1895 kfree(rx_ring
->ps_page
);
1896 rx_ring
->ps_page
= NULL
;
1897 kfree(rx_ring
->ps_page_dma
);
1898 rx_ring
->ps_page_dma
= NULL
;
1900 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1902 rx_ring
->desc
= NULL
;
1906 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1907 * @adapter: board private structure
1909 * Free all receive software resources
1913 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1917 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1918 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1922 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1923 * @adapter: board private structure
1924 * @rx_ring: ring to free buffers from
1928 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1929 struct e1000_rx_ring
*rx_ring
)
1931 struct e1000_buffer
*buffer_info
;
1932 struct e1000_ps_page
*ps_page
;
1933 struct e1000_ps_page_dma
*ps_page_dma
;
1934 struct pci_dev
*pdev
= adapter
->pdev
;
1938 /* Free all the Rx ring sk_buffs */
1939 for (i
= 0; i
< rx_ring
->count
; i
++) {
1940 buffer_info
= &rx_ring
->buffer_info
[i
];
1941 if (buffer_info
->skb
) {
1942 pci_unmap_single(pdev
,
1944 buffer_info
->length
,
1945 PCI_DMA_FROMDEVICE
);
1947 dev_kfree_skb(buffer_info
->skb
);
1948 buffer_info
->skb
= NULL
;
1950 ps_page
= &rx_ring
->ps_page
[i
];
1951 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1952 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1953 if (!ps_page
->ps_page
[j
]) break;
1954 pci_unmap_page(pdev
,
1955 ps_page_dma
->ps_page_dma
[j
],
1956 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1957 ps_page_dma
->ps_page_dma
[j
] = 0;
1958 put_page(ps_page
->ps_page
[j
]);
1959 ps_page
->ps_page
[j
] = NULL
;
1963 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1964 memset(rx_ring
->buffer_info
, 0, size
);
1965 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1966 memset(rx_ring
->ps_page
, 0, size
);
1967 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1968 memset(rx_ring
->ps_page_dma
, 0, size
);
1970 /* Zero out the descriptor ring */
1972 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1974 rx_ring
->next_to_clean
= 0;
1975 rx_ring
->next_to_use
= 0;
1977 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1978 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1982 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1983 * @adapter: board private structure
1987 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
1991 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1992 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1995 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1996 * and memory write and invalidate disabled for certain operations
1999 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2001 struct net_device
*netdev
= adapter
->netdev
;
2004 e1000_pci_clear_mwi(&adapter
->hw
);
2006 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2007 rctl
|= E1000_RCTL_RST
;
2008 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2009 E1000_WRITE_FLUSH(&adapter
->hw
);
2012 if (netif_running(netdev
))
2013 e1000_clean_all_rx_rings(adapter
);
2017 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2019 struct net_device
*netdev
= adapter
->netdev
;
2022 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2023 rctl
&= ~E1000_RCTL_RST
;
2024 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2025 E1000_WRITE_FLUSH(&adapter
->hw
);
2028 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2029 e1000_pci_set_mwi(&adapter
->hw
);
2031 if (netif_running(netdev
)) {
2032 /* No need to loop, because 82542 supports only 1 queue */
2033 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2034 e1000_configure_rx(adapter
);
2035 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2040 * e1000_set_mac - Change the Ethernet Address of the NIC
2041 * @netdev: network interface device structure
2042 * @p: pointer to an address structure
2044 * Returns 0 on success, negative on failure
2048 e1000_set_mac(struct net_device
*netdev
, void *p
)
2050 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2051 struct sockaddr
*addr
= p
;
2053 if (!is_valid_ether_addr(addr
->sa_data
))
2054 return -EADDRNOTAVAIL
;
2056 /* 82542 2.0 needs to be in reset to write receive address registers */
2058 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2059 e1000_enter_82542_rst(adapter
);
2061 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2062 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2064 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2066 /* With 82571 controllers, LAA may be overwritten (with the default)
2067 * due to controller reset from the other port. */
2068 if (adapter
->hw
.mac_type
== e1000_82571
) {
2069 /* activate the work around */
2070 adapter
->hw
.laa_is_present
= 1;
2072 /* Hold a copy of the LAA in RAR[14] This is done so that
2073 * between the time RAR[0] gets clobbered and the time it
2074 * gets fixed (in e1000_watchdog), the actual LAA is in one
2075 * of the RARs and no incoming packets directed to this port
2076 * are dropped. Eventaully the LAA will be in RAR[0] and
2078 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2079 E1000_RAR_ENTRIES
- 1);
2082 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2083 e1000_leave_82542_rst(adapter
);
2089 * e1000_set_multi - Multicast and Promiscuous mode set
2090 * @netdev: network interface device structure
2092 * The set_multi entry point is called whenever the multicast address
2093 * list or the network interface flags are updated. This routine is
2094 * responsible for configuring the hardware for proper multicast,
2095 * promiscuous mode, and all-multi behavior.
2099 e1000_set_multi(struct net_device
*netdev
)
2101 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2102 struct e1000_hw
*hw
= &adapter
->hw
;
2103 struct dev_mc_list
*mc_ptr
;
2105 uint32_t hash_value
;
2106 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2108 /* reserve RAR[14] for LAA over-write work-around */
2109 if (adapter
->hw
.mac_type
== e1000_82571
)
2112 /* Check for Promiscuous and All Multicast modes */
2114 rctl
= E1000_READ_REG(hw
, RCTL
);
2116 if (netdev
->flags
& IFF_PROMISC
) {
2117 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2118 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2119 rctl
|= E1000_RCTL_MPE
;
2120 rctl
&= ~E1000_RCTL_UPE
;
2122 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2125 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2127 /* 82542 2.0 needs to be in reset to write receive address registers */
2129 if (hw
->mac_type
== e1000_82542_rev2_0
)
2130 e1000_enter_82542_rst(adapter
);
2132 /* load the first 14 multicast address into the exact filters 1-14
2133 * RAR 0 is used for the station MAC adddress
2134 * if there are not 14 addresses, go ahead and clear the filters
2135 * -- with 82571 controllers only 0-13 entries are filled here
2137 mc_ptr
= netdev
->mc_list
;
2139 for (i
= 1; i
< rar_entries
; i
++) {
2141 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2142 mc_ptr
= mc_ptr
->next
;
2144 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2145 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2149 /* clear the old settings from the multicast hash table */
2151 for (i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2152 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2154 /* load any remaining addresses into the hash table */
2156 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2157 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2158 e1000_mta_set(hw
, hash_value
);
2161 if (hw
->mac_type
== e1000_82542_rev2_0
)
2162 e1000_leave_82542_rst(adapter
);
2165 /* Need to wait a few seconds after link up to get diagnostic information from
2169 e1000_update_phy_info(unsigned long data
)
2171 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2172 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2176 * e1000_82547_tx_fifo_stall - Timer Call-back
2177 * @data: pointer to adapter cast into an unsigned long
2181 e1000_82547_tx_fifo_stall(unsigned long data
)
2183 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2184 struct net_device
*netdev
= adapter
->netdev
;
2187 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2188 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2189 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2190 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2191 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2192 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2193 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2194 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2195 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2196 tctl
& ~E1000_TCTL_EN
);
2197 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2198 adapter
->tx_head_addr
);
2199 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2200 adapter
->tx_head_addr
);
2201 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2202 adapter
->tx_head_addr
);
2203 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2204 adapter
->tx_head_addr
);
2205 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2206 E1000_WRITE_FLUSH(&adapter
->hw
);
2208 adapter
->tx_fifo_head
= 0;
2209 atomic_set(&adapter
->tx_fifo_stall
, 0);
2210 netif_wake_queue(netdev
);
2212 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2218 * e1000_watchdog - Timer Call-back
2219 * @data: pointer to adapter cast into an unsigned long
2222 e1000_watchdog(unsigned long data
)
2224 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2226 /* Do the rest outside of interrupt context */
2227 schedule_work(&adapter
->watchdog_task
);
2231 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2233 struct net_device
*netdev
= adapter
->netdev
;
2234 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2237 e1000_check_for_link(&adapter
->hw
);
2238 if (adapter
->hw
.mac_type
== e1000_82573
) {
2239 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2240 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2241 e1000_update_mng_vlan(adapter
);
2244 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2245 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2246 link
= !adapter
->hw
.serdes_link_down
;
2248 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2251 if (!netif_carrier_ok(netdev
)) {
2252 e1000_get_speed_and_duplex(&adapter
->hw
,
2253 &adapter
->link_speed
,
2254 &adapter
->link_duplex
);
2256 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2257 adapter
->link_speed
,
2258 adapter
->link_duplex
== FULL_DUPLEX
?
2259 "Full Duplex" : "Half Duplex");
2261 /* tweak tx_queue_len according to speed/duplex */
2262 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2263 adapter
->tx_timeout_factor
= 1;
2264 if (adapter
->link_duplex
== HALF_DUPLEX
) {
2265 switch (adapter
->link_speed
) {
2267 netdev
->tx_queue_len
= 10;
2268 adapter
->tx_timeout_factor
= 8;
2271 netdev
->tx_queue_len
= 100;
2276 netif_carrier_on(netdev
);
2277 netif_wake_queue(netdev
);
2278 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2279 adapter
->smartspeed
= 0;
2282 if (netif_carrier_ok(netdev
)) {
2283 adapter
->link_speed
= 0;
2284 adapter
->link_duplex
= 0;
2285 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2286 netif_carrier_off(netdev
);
2287 netif_stop_queue(netdev
);
2288 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2291 e1000_smartspeed(adapter
);
2294 e1000_update_stats(adapter
);
2296 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2297 adapter
->tpt_old
= adapter
->stats
.tpt
;
2298 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2299 adapter
->colc_old
= adapter
->stats
.colc
;
2301 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2302 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2303 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2304 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2306 e1000_update_adaptive(&adapter
->hw
);
2308 if (!netif_carrier_ok(netdev
)) {
2309 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2310 /* We've lost link, so the controller stops DMA,
2311 * but we've got queued Tx work that's never going
2312 * to get done, so reset controller to flush Tx.
2313 * (Do the reset outside of interrupt context). */
2314 schedule_work(&adapter
->tx_timeout_task
);
2318 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2319 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2320 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2321 * asymmetrical Tx or Rx gets ITR=8000; everyone
2322 * else is between 2000-8000. */
2323 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2324 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2325 adapter
->gotcl
- adapter
->gorcl
:
2326 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2327 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2328 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2331 /* Cause software interrupt to ensure rx ring is cleaned */
2332 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2334 /* Force detection of hung controller every watchdog period */
2335 adapter
->detect_tx_hung
= TRUE
;
2337 /* With 82571 controllers, LAA may be overwritten due to controller
2338 * reset from the other port. Set the appropriate LAA in RAR[0] */
2339 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2340 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2342 /* Reset the timer */
2343 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2346 #define E1000_TX_FLAGS_CSUM 0x00000001
2347 #define E1000_TX_FLAGS_VLAN 0x00000002
2348 #define E1000_TX_FLAGS_TSO 0x00000004
2349 #define E1000_TX_FLAGS_IPV4 0x00000008
2350 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2351 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2354 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2355 struct sk_buff
*skb
)
2358 struct e1000_context_desc
*context_desc
;
2359 struct e1000_buffer
*buffer_info
;
2361 uint32_t cmd_length
= 0;
2362 uint16_t ipcse
= 0, tucse
, mss
;
2363 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2366 if (skb_shinfo(skb
)->tso_size
) {
2367 if (skb_header_cloned(skb
)) {
2368 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2373 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2374 mss
= skb_shinfo(skb
)->tso_size
;
2375 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
2376 skb
->nh
.iph
->tot_len
= 0;
2377 skb
->nh
.iph
->check
= 0;
2379 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2384 cmd_length
= E1000_TXD_CMD_IP
;
2385 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2386 #ifdef NETIF_F_TSO_IPV6
2387 } else if (skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2388 skb
->nh
.ipv6h
->payload_len
= 0;
2390 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2391 &skb
->nh
.ipv6h
->daddr
,
2398 ipcss
= skb
->nh
.raw
- skb
->data
;
2399 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2400 tucss
= skb
->h
.raw
- skb
->data
;
2401 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2404 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2405 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2407 i
= tx_ring
->next_to_use
;
2408 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2409 buffer_info
= &tx_ring
->buffer_info
[i
];
2411 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2412 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2413 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2414 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2415 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2416 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2417 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2418 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2419 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2421 buffer_info
->time_stamp
= jiffies
;
2423 if (++i
== tx_ring
->count
) i
= 0;
2424 tx_ring
->next_to_use
= i
;
2433 static inline boolean_t
2434 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2435 struct sk_buff
*skb
)
2437 struct e1000_context_desc
*context_desc
;
2438 struct e1000_buffer
*buffer_info
;
2442 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2443 css
= skb
->h
.raw
- skb
->data
;
2445 i
= tx_ring
->next_to_use
;
2446 buffer_info
= &tx_ring
->buffer_info
[i
];
2447 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2449 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2450 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2451 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2452 context_desc
->tcp_seg_setup
.data
= 0;
2453 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2455 buffer_info
->time_stamp
= jiffies
;
2457 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2458 tx_ring
->next_to_use
= i
;
2466 #define E1000_MAX_TXD_PWR 12
2467 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2470 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2471 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2472 unsigned int nr_frags
, unsigned int mss
)
2474 struct e1000_buffer
*buffer_info
;
2475 unsigned int len
= skb
->len
;
2476 unsigned int offset
= 0, size
, count
= 0, i
;
2478 len
-= skb
->data_len
;
2480 i
= tx_ring
->next_to_use
;
2483 buffer_info
= &tx_ring
->buffer_info
[i
];
2484 size
= min(len
, max_per_txd
);
2486 /* Workaround for Controller erratum --
2487 * descriptor for non-tso packet in a linear SKB that follows a
2488 * tso gets written back prematurely before the data is fully
2489 * DMAd to the controller */
2490 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2491 !skb_shinfo(skb
)->tso_size
) {
2492 tx_ring
->last_tx_tso
= 0;
2496 /* Workaround for premature desc write-backs
2497 * in TSO mode. Append 4-byte sentinel desc */
2498 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2501 /* work-around for errata 10 and it applies
2502 * to all controllers in PCI-X mode
2503 * The fix is to make sure that the first descriptor of a
2504 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2506 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2507 (size
> 2015) && count
== 0))
2510 /* Workaround for potential 82544 hang in PCI-X. Avoid
2511 * terminating buffers within evenly-aligned dwords. */
2512 if (unlikely(adapter
->pcix_82544
&&
2513 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2517 buffer_info
->length
= size
;
2519 pci_map_single(adapter
->pdev
,
2523 buffer_info
->time_stamp
= jiffies
;
2528 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2531 for (f
= 0; f
< nr_frags
; f
++) {
2532 struct skb_frag_struct
*frag
;
2534 frag
= &skb_shinfo(skb
)->frags
[f
];
2536 offset
= frag
->page_offset
;
2539 buffer_info
= &tx_ring
->buffer_info
[i
];
2540 size
= min(len
, max_per_txd
);
2542 /* Workaround for premature desc write-backs
2543 * in TSO mode. Append 4-byte sentinel desc */
2544 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2547 /* Workaround for potential 82544 hang in PCI-X.
2548 * Avoid terminating buffers within evenly-aligned
2550 if (unlikely(adapter
->pcix_82544
&&
2551 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2555 buffer_info
->length
= size
;
2557 pci_map_page(adapter
->pdev
,
2562 buffer_info
->time_stamp
= jiffies
;
2567 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2571 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2572 tx_ring
->buffer_info
[i
].skb
= skb
;
2573 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2579 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2580 int tx_flags
, int count
)
2582 struct e1000_tx_desc
*tx_desc
= NULL
;
2583 struct e1000_buffer
*buffer_info
;
2584 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2587 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2588 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2590 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2592 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2593 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2596 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2597 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2598 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2601 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2602 txd_lower
|= E1000_TXD_CMD_VLE
;
2603 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2606 i
= tx_ring
->next_to_use
;
2609 buffer_info
= &tx_ring
->buffer_info
[i
];
2610 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2611 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2612 tx_desc
->lower
.data
=
2613 cpu_to_le32(txd_lower
| buffer_info
->length
);
2614 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2615 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2618 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2620 /* Force memory writes to complete before letting h/w
2621 * know there are new descriptors to fetch. (Only
2622 * applicable for weak-ordered memory model archs,
2623 * such as IA-64). */
2626 tx_ring
->next_to_use
= i
;
2627 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2631 * 82547 workaround to avoid controller hang in half-duplex environment.
2632 * The workaround is to avoid queuing a large packet that would span
2633 * the internal Tx FIFO ring boundary by notifying the stack to resend
2634 * the packet at a later time. This gives the Tx FIFO an opportunity to
2635 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2636 * to the beginning of the Tx FIFO.
2639 #define E1000_FIFO_HDR 0x10
2640 #define E1000_82547_PAD_LEN 0x3E0
2643 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2645 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2646 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2648 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2650 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2651 goto no_fifo_stall_required
;
2653 if (atomic_read(&adapter
->tx_fifo_stall
))
2656 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2657 atomic_set(&adapter
->tx_fifo_stall
, 1);
2661 no_fifo_stall_required
:
2662 adapter
->tx_fifo_head
+= skb_fifo_len
;
2663 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2664 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2668 #define MINIMUM_DHCP_PACKET_SIZE 282
2670 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2672 struct e1000_hw
*hw
= &adapter
->hw
;
2673 uint16_t length
, offset
;
2674 if (vlan_tx_tag_present(skb
)) {
2675 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2676 ( adapter
->hw
.mng_cookie
.status
&
2677 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2680 if ((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2681 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2682 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2683 const struct iphdr
*ip
=
2684 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2685 if (IPPROTO_UDP
== ip
->protocol
) {
2686 struct udphdr
*udp
=
2687 (struct udphdr
*)((uint8_t *)ip
+
2689 if (ntohs(udp
->dest
) == 67) {
2690 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2691 length
= skb
->len
- offset
;
2693 return e1000_mng_write_dhcp_info(hw
,
2703 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2705 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2707 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2708 struct e1000_tx_ring
*tx_ring
;
2709 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2710 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2711 unsigned int tx_flags
= 0;
2712 unsigned int len
= skb
->len
;
2713 unsigned long flags
;
2714 unsigned int nr_frags
= 0;
2715 unsigned int mss
= 0;
2719 len
-= skb
->data_len
;
2721 tx_ring
= adapter
->tx_ring
;
2723 if (unlikely(skb
->len
<= 0)) {
2724 dev_kfree_skb_any(skb
);
2725 return NETDEV_TX_OK
;
2729 mss
= skb_shinfo(skb
)->tso_size
;
2730 /* The controller does a simple calculation to
2731 * make sure there is enough room in the FIFO before
2732 * initiating the DMA for each buffer. The calc is:
2733 * 4 = ceil(buffer len/mss). To make sure we don't
2734 * overrun the FIFO, adjust the max buffer len if mss
2738 max_per_txd
= min(mss
<< 2, max_per_txd
);
2739 max_txd_pwr
= fls(max_per_txd
) - 1;
2741 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2742 * points to just header, pull a few bytes of payload from
2743 * frags into skb->data */
2744 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2745 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
)) &&
2746 (adapter
->hw
.mac_type
== e1000_82571
||
2747 adapter
->hw
.mac_type
== e1000_82572
)) {
2748 unsigned int pull_size
;
2749 pull_size
= min((unsigned int)4, skb
->data_len
);
2750 if (!__pskb_pull_tail(skb
, pull_size
)) {
2751 printk(KERN_ERR
"__pskb_pull_tail failed.\n");
2752 dev_kfree_skb_any(skb
);
2755 len
= skb
->len
- skb
->data_len
;
2759 /* reserve a descriptor for the offload context */
2760 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2764 if (skb
->ip_summed
== CHECKSUM_HW
)
2769 /* Controller Erratum workaround */
2770 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2771 !skb_shinfo(skb
)->tso_size
)
2775 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2777 if (adapter
->pcix_82544
)
2780 /* work-around for errata 10 and it applies to all controllers
2781 * in PCI-X mode, so add one more descriptor to the count
2783 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2787 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2788 for (f
= 0; f
< nr_frags
; f
++)
2789 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2791 if (adapter
->pcix_82544
)
2794 if (adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2795 e1000_transfer_dhcp_info(adapter
, skb
);
2797 local_irq_save(flags
);
2798 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2799 /* Collision - tell upper layer to requeue */
2800 local_irq_restore(flags
);
2801 return NETDEV_TX_LOCKED
;
2804 /* need: count + 2 desc gap to keep tail from touching
2805 * head, otherwise try next time */
2806 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2807 netif_stop_queue(netdev
);
2808 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2809 return NETDEV_TX_BUSY
;
2812 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2813 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2814 netif_stop_queue(netdev
);
2815 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2816 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2817 return NETDEV_TX_BUSY
;
2821 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2822 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2823 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2826 first
= tx_ring
->next_to_use
;
2828 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2830 dev_kfree_skb_any(skb
);
2831 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2832 return NETDEV_TX_OK
;
2836 tx_ring
->last_tx_tso
= 1;
2837 tx_flags
|= E1000_TX_FLAGS_TSO
;
2838 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2839 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2841 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2842 * 82571 hardware supports TSO capabilities for IPv6 as well...
2843 * no longer assume, we must. */
2844 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2845 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2847 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2848 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2849 max_per_txd
, nr_frags
, mss
));
2851 netdev
->trans_start
= jiffies
;
2853 /* Make sure there is space in the ring for the next send. */
2854 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2855 netif_stop_queue(netdev
);
2857 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2858 return NETDEV_TX_OK
;
2862 * e1000_tx_timeout - Respond to a Tx Hang
2863 * @netdev: network interface device structure
2867 e1000_tx_timeout(struct net_device
*netdev
)
2869 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2871 /* Do the reset outside of interrupt context */
2872 schedule_work(&adapter
->tx_timeout_task
);
2876 e1000_tx_timeout_task(struct net_device
*netdev
)
2878 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2880 adapter
->tx_timeout_count
++;
2881 e1000_down(adapter
);
2886 * e1000_get_stats - Get System Network Statistics
2887 * @netdev: network interface device structure
2889 * Returns the address of the device statistics structure.
2890 * The statistics are actually updated from the timer callback.
2893 static struct net_device_stats
*
2894 e1000_get_stats(struct net_device
*netdev
)
2896 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2898 /* only return the current stats */
2899 return &adapter
->net_stats
;
2903 * e1000_change_mtu - Change the Maximum Transfer Unit
2904 * @netdev: network interface device structure
2905 * @new_mtu: new value for maximum frame size
2907 * Returns 0 on success, negative on failure
2911 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2913 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2914 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2916 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2917 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2918 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2922 /* Adapter-specific max frame size limits. */
2923 switch (adapter
->hw
.mac_type
) {
2924 case e1000_82542_rev2_0
:
2925 case e1000_82542_rev2_1
:
2927 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2928 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
2934 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2935 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2936 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
2941 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
2946 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2947 adapter
->rx_buffer_len
= max_frame
;
2948 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
2950 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
2951 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
2952 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2956 if(max_frame
<= E1000_RXBUFFER_2048
)
2957 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
2958 else if(max_frame
<= E1000_RXBUFFER_4096
)
2959 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
2960 else if(max_frame
<= E1000_RXBUFFER_8192
)
2961 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
2962 else if(max_frame
<= E1000_RXBUFFER_16384
)
2963 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
2967 netdev
->mtu
= new_mtu
;
2969 if (netif_running(netdev
)) {
2970 e1000_down(adapter
);
2974 adapter
->hw
.max_frame_size
= max_frame
;
2980 * e1000_update_stats - Update the board statistics counters
2981 * @adapter: board private structure
2985 e1000_update_stats(struct e1000_adapter
*adapter
)
2987 struct e1000_hw
*hw
= &adapter
->hw
;
2988 unsigned long flags
;
2991 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2993 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2995 /* these counters are modified from e1000_adjust_tbi_stats,
2996 * called from the interrupt context, so they must only
2997 * be written while holding adapter->stats_lock
3000 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3001 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3002 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3003 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3004 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3005 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3006 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3007 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3008 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3009 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3010 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3011 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3012 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3014 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3015 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3016 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3017 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3018 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3019 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3020 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3021 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3022 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3023 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3024 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3025 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3026 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3027 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3028 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3029 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3030 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3031 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3032 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3033 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3034 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3035 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3036 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3037 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3038 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3039 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3040 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3041 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3042 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3043 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3044 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3045 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3046 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3047 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3049 /* used for adaptive IFS */
3051 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3052 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3053 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3054 adapter
->stats
.colc
+= hw
->collision_delta
;
3056 if (hw
->mac_type
>= e1000_82543
) {
3057 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3058 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3059 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3060 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3061 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3062 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3064 if (hw
->mac_type
> e1000_82547_rev_2
) {
3065 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3066 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3067 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3068 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3069 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3070 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3071 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3072 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3073 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3076 /* Fill out the OS statistics structure */
3078 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3079 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3080 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3081 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3082 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3083 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3087 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3088 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3089 adapter
->stats
.rlec
+ adapter
->stats
.cexterr
;
3090 adapter
->net_stats
.rx_dropped
= 0;
3091 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
3092 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3093 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3094 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3098 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3099 adapter
->stats
.latecol
;
3100 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3101 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3102 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3104 /* Tx Dropped needs to be maintained elsewhere */
3108 if (hw
->media_type
== e1000_media_type_copper
) {
3109 if ((adapter
->link_speed
== SPEED_1000
) &&
3110 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3111 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3112 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3115 if ((hw
->mac_type
<= e1000_82546
) &&
3116 (hw
->phy_type
== e1000_phy_m88
) &&
3117 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3118 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3121 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3125 * e1000_intr - Interrupt Handler
3126 * @irq: interrupt number
3127 * @data: pointer to a network interface device structure
3128 * @pt_regs: CPU registers structure
3132 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3134 struct net_device
*netdev
= data
;
3135 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3136 struct e1000_hw
*hw
= &adapter
->hw
;
3137 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3138 #ifndef CONFIG_E1000_NAPI
3141 /* Interrupt Auto-Mask...upon reading ICR,
3142 * interrupts are masked. No need for the
3143 * IMC write, but it does mean we should
3144 * account for it ASAP. */
3145 if (likely(hw
->mac_type
>= e1000_82571
))
3146 atomic_inc(&adapter
->irq_sem
);
3149 if (unlikely(!icr
)) {
3150 #ifdef CONFIG_E1000_NAPI
3151 if (hw
->mac_type
>= e1000_82571
)
3152 e1000_irq_enable(adapter
);
3154 return IRQ_NONE
; /* Not our interrupt */
3157 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3158 hw
->get_link_status
= 1;
3159 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3162 #ifdef CONFIG_E1000_NAPI
3163 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3164 atomic_inc(&adapter
->irq_sem
);
3165 E1000_WRITE_REG(hw
, IMC
, ~0);
3166 E1000_WRITE_FLUSH(hw
);
3168 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3169 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3171 e1000_irq_enable(adapter
);
3173 /* Writing IMC and IMS is needed for 82547.
3174 * Due to Hub Link bus being occupied, an interrupt
3175 * de-assertion message is not able to be sent.
3176 * When an interrupt assertion message is generated later,
3177 * two messages are re-ordered and sent out.
3178 * That causes APIC to think 82547 is in de-assertion
3179 * state, while 82547 is in assertion state, resulting
3180 * in dead lock. Writing IMC forces 82547 into
3181 * de-assertion state.
3183 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3184 atomic_inc(&adapter
->irq_sem
);
3185 E1000_WRITE_REG(hw
, IMC
, ~0);
3188 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3189 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3190 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3193 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3194 e1000_irq_enable(adapter
);
3201 #ifdef CONFIG_E1000_NAPI
3203 * e1000_clean - NAPI Rx polling callback
3204 * @adapter: board private structure
3208 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3210 struct e1000_adapter
*adapter
;
3211 int work_to_do
= min(*budget
, poll_dev
->quota
);
3212 int tx_cleaned
= 0, i
= 0, work_done
= 0;
3214 /* Must NOT use netdev_priv macro here. */
3215 adapter
= poll_dev
->priv
;
3217 /* Keep link state information with original netdev */
3218 if (!netif_carrier_ok(adapter
->netdev
))
3221 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3223 if (unlikely(i
== adapter
->num_rx_queues
))
3227 if (likely(adapter
->num_tx_queues
== 1)) {
3228 /* e1000_clean is called per-cpu. This lock protects
3229 * tx_ring[0] from being cleaned by multiple cpus
3230 * simultaneously. A failure obtaining the lock means
3231 * tx_ring[0] is currently being cleaned anyway. */
3232 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3233 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3234 &adapter
->tx_ring
[0]);
3235 spin_unlock(&adapter
->tx_queue_lock
);
3238 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3240 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3241 &work_done
, work_to_do
);
3243 *budget
-= work_done
;
3244 poll_dev
->quota
-= work_done
;
3246 /* If no Tx and not enough Rx work done, exit the polling mode */
3247 if ((!tx_cleaned
&& (work_done
== 0)) ||
3248 !netif_running(adapter
->netdev
)) {
3250 netif_rx_complete(poll_dev
);
3251 e1000_irq_enable(adapter
);
3260 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3261 * @adapter: board private structure
3265 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3266 struct e1000_tx_ring
*tx_ring
)
3268 struct net_device
*netdev
= adapter
->netdev
;
3269 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3270 struct e1000_buffer
*buffer_info
;
3271 unsigned int i
, eop
;
3272 boolean_t cleaned
= FALSE
;
3274 i
= tx_ring
->next_to_clean
;
3275 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3276 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3278 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3279 for (cleaned
= FALSE
; !cleaned
; ) {
3280 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3281 buffer_info
= &tx_ring
->buffer_info
[i
];
3282 cleaned
= (i
== eop
);
3284 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3285 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3287 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3291 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3292 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3295 tx_ring
->next_to_clean
= i
;
3297 spin_lock(&tx_ring
->tx_lock
);
3299 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3300 netif_carrier_ok(netdev
)))
3301 netif_wake_queue(netdev
);
3303 spin_unlock(&tx_ring
->tx_lock
);
3305 if (adapter
->detect_tx_hung
) {
3306 /* Detect a transmit hang in hardware, this serializes the
3307 * check with the clearing of time_stamp and movement of i */
3308 adapter
->detect_tx_hung
= FALSE
;
3309 if (tx_ring
->buffer_info
[eop
].dma
&&
3310 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3311 adapter
->tx_timeout_factor
* HZ
)
3312 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3313 E1000_STATUS_TXOFF
)) {
3315 /* detected Tx unit hang */
3316 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3320 " next_to_use <%x>\n"
3321 " next_to_clean <%x>\n"
3322 "buffer_info[next_to_clean]\n"
3323 " time_stamp <%lx>\n"
3324 " next_to_watch <%x>\n"
3326 " next_to_watch.status <%x>\n",
3327 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3328 sizeof(struct e1000_tx_ring
)),
3329 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3330 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3331 tx_ring
->next_to_use
,
3332 tx_ring
->next_to_clean
,
3333 tx_ring
->buffer_info
[eop
].time_stamp
,
3336 eop_desc
->upper
.fields
.status
);
3337 netif_stop_queue(netdev
);
3344 * e1000_rx_checksum - Receive Checksum Offload for 82543
3345 * @adapter: board private structure
3346 * @status_err: receive descriptor status and error fields
3347 * @csum: receive descriptor csum field
3348 * @sk_buff: socket buffer with received data
3352 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3353 uint32_t status_err
, uint32_t csum
,
3354 struct sk_buff
*skb
)
3356 uint16_t status
= (uint16_t)status_err
;
3357 uint8_t errors
= (uint8_t)(status_err
>> 24);
3358 skb
->ip_summed
= CHECKSUM_NONE
;
3360 /* 82543 or newer only */
3361 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3362 /* Ignore Checksum bit is set */
3363 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3364 /* TCP/UDP checksum error bit is set */
3365 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3366 /* let the stack verify checksum errors */
3367 adapter
->hw_csum_err
++;
3370 /* TCP/UDP Checksum has not been calculated */
3371 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3372 if (!(status
& E1000_RXD_STAT_TCPCS
))
3375 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3378 /* It must be a TCP or UDP packet with a valid checksum */
3379 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3380 /* TCP checksum is good */
3381 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3382 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3383 /* IP fragment with UDP payload */
3384 /* Hardware complements the payload checksum, so we undo it
3385 * and then put the value in host order for further stack use.
3387 csum
= ntohl(csum
^ 0xFFFF);
3389 skb
->ip_summed
= CHECKSUM_HW
;
3391 adapter
->hw_csum_good
++;
3395 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3396 * @adapter: board private structure
3400 #ifdef CONFIG_E1000_NAPI
3401 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3402 struct e1000_rx_ring
*rx_ring
,
3403 int *work_done
, int work_to_do
)
3405 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3406 struct e1000_rx_ring
*rx_ring
)
3409 struct net_device
*netdev
= adapter
->netdev
;
3410 struct pci_dev
*pdev
= adapter
->pdev
;
3411 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3412 struct e1000_buffer
*buffer_info
, *next_buffer
;
3413 unsigned long flags
;
3417 int cleaned_count
= 0;
3418 boolean_t cleaned
= FALSE
;
3420 i
= rx_ring
->next_to_clean
;
3421 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3422 buffer_info
= &rx_ring
->buffer_info
[i
];
3424 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3425 struct sk_buff
*skb
, *next_skb
;
3427 #ifdef CONFIG_E1000_NAPI
3428 if (*work_done
>= work_to_do
)
3432 status
= rx_desc
->status
;
3433 skb
= buffer_info
->skb
;
3434 buffer_info
->skb
= NULL
;
3436 if (++i
== rx_ring
->count
) i
= 0;
3437 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3438 next_buffer
= &rx_ring
->buffer_info
[i
];
3439 next_skb
= next_buffer
->skb
;
3443 pci_unmap_single(pdev
,
3445 buffer_info
->length
,
3446 PCI_DMA_FROMDEVICE
);
3448 length
= le16_to_cpu(rx_desc
->length
);
3450 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3451 /* All receives must fit into a single buffer */
3452 E1000_DBG("%s: Receive packet consumed multiple"
3453 " buffers\n", netdev
->name
);
3454 dev_kfree_skb_irq(skb
);
3458 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3459 last_byte
= *(skb
->data
+ length
- 1);
3460 if (TBI_ACCEPT(&adapter
->hw
, status
,
3461 rx_desc
->errors
, length
, last_byte
)) {
3462 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3463 e1000_tbi_adjust_stats(&adapter
->hw
,
3466 spin_unlock_irqrestore(&adapter
->stats_lock
,
3470 dev_kfree_skb_irq(skb
);
3475 /* code added for copybreak, this should improve
3476 * performance for small packets with large amounts
3477 * of reassembly being done in the stack */
3478 #define E1000_CB_LENGTH 256
3479 if (length
< E1000_CB_LENGTH
) {
3480 struct sk_buff
*new_skb
=
3481 dev_alloc_skb(length
+ NET_IP_ALIGN
);
3483 skb_reserve(new_skb
, NET_IP_ALIGN
);
3484 new_skb
->dev
= netdev
;
3485 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3486 skb
->data
- NET_IP_ALIGN
,
3487 length
+ NET_IP_ALIGN
);
3488 /* save the skb in buffer_info as good */
3489 buffer_info
->skb
= skb
;
3491 skb_put(skb
, length
);
3494 skb_put(skb
, length
);
3496 /* end copybreak code */
3498 /* Receive Checksum Offload */
3499 e1000_rx_checksum(adapter
,
3500 (uint32_t)(status
) |
3501 ((uint32_t)(rx_desc
->errors
) << 24),
3502 rx_desc
->csum
, skb
);
3504 skb
->protocol
= eth_type_trans(skb
, netdev
);
3505 #ifdef CONFIG_E1000_NAPI
3506 if (unlikely(adapter
->vlgrp
&&
3507 (status
& E1000_RXD_STAT_VP
))) {
3508 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3509 le16_to_cpu(rx_desc
->special
) &
3510 E1000_RXD_SPC_VLAN_MASK
);
3512 netif_receive_skb(skb
);
3514 #else /* CONFIG_E1000_NAPI */
3515 if (unlikely(adapter
->vlgrp
&&
3516 (status
& E1000_RXD_STAT_VP
))) {
3517 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3518 le16_to_cpu(rx_desc
->special
) &
3519 E1000_RXD_SPC_VLAN_MASK
);
3523 #endif /* CONFIG_E1000_NAPI */
3524 netdev
->last_rx
= jiffies
;
3527 rx_desc
->status
= 0;
3529 /* return some buffers to hardware, one at a time is too slow */
3530 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3531 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3536 buffer_info
= next_buffer
;
3538 rx_ring
->next_to_clean
= i
;
3540 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3542 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3548 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3549 * @adapter: board private structure
3553 #ifdef CONFIG_E1000_NAPI
3554 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3555 struct e1000_rx_ring
*rx_ring
,
3556 int *work_done
, int work_to_do
)
3558 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3559 struct e1000_rx_ring
*rx_ring
)
3562 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3563 struct net_device
*netdev
= adapter
->netdev
;
3564 struct pci_dev
*pdev
= adapter
->pdev
;
3565 struct e1000_buffer
*buffer_info
, *next_buffer
;
3566 struct e1000_ps_page
*ps_page
;
3567 struct e1000_ps_page_dma
*ps_page_dma
;
3568 struct sk_buff
*skb
, *next_skb
;
3570 uint32_t length
, staterr
;
3571 int cleaned_count
= 0;
3572 boolean_t cleaned
= FALSE
;
3574 i
= rx_ring
->next_to_clean
;
3575 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3576 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3577 buffer_info
= &rx_ring
->buffer_info
[i
];
3579 while (staterr
& E1000_RXD_STAT_DD
) {
3580 ps_page
= &rx_ring
->ps_page
[i
];
3581 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3582 #ifdef CONFIG_E1000_NAPI
3583 if (unlikely(*work_done
>= work_to_do
))
3587 skb
= buffer_info
->skb
;
3589 if (++i
== rx_ring
->count
) i
= 0;
3590 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3591 next_buffer
= &rx_ring
->buffer_info
[i
];
3592 next_skb
= next_buffer
->skb
;
3596 pci_unmap_single(pdev
, buffer_info
->dma
,
3597 buffer_info
->length
,
3598 PCI_DMA_FROMDEVICE
);
3600 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3601 E1000_DBG("%s: Packet Split buffers didn't pick up"
3602 " the full packet\n", netdev
->name
);
3603 dev_kfree_skb_irq(skb
);
3607 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3608 dev_kfree_skb_irq(skb
);
3612 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3614 if (unlikely(!length
)) {
3615 E1000_DBG("%s: Last part of the packet spanning"
3616 " multiple descriptors\n", netdev
->name
);
3617 dev_kfree_skb_irq(skb
);
3622 skb_put(skb
, length
);
3624 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3625 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3628 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3629 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3630 ps_page_dma
->ps_page_dma
[j
] = 0;
3631 skb_shinfo(skb
)->frags
[j
].page
=
3632 ps_page
->ps_page
[j
];
3633 ps_page
->ps_page
[j
] = NULL
;
3634 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3635 skb_shinfo(skb
)->frags
[j
].size
= length
;
3636 skb_shinfo(skb
)->nr_frags
++;
3638 skb
->data_len
+= length
;
3641 e1000_rx_checksum(adapter
, staterr
,
3642 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3643 skb
->protocol
= eth_type_trans(skb
, netdev
);
3645 if (likely(rx_desc
->wb
.upper
.header_status
&
3646 E1000_RXDPS_HDRSTAT_HDRSP
))
3647 adapter
->rx_hdr_split
++;
3648 #ifdef CONFIG_E1000_NAPI
3649 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3650 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3651 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3652 E1000_RXD_SPC_VLAN_MASK
);
3654 netif_receive_skb(skb
);
3656 #else /* CONFIG_E1000_NAPI */
3657 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3658 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3659 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3660 E1000_RXD_SPC_VLAN_MASK
);
3664 #endif /* CONFIG_E1000_NAPI */
3665 netdev
->last_rx
= jiffies
;
3668 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3669 buffer_info
->skb
= NULL
;
3671 /* return some buffers to hardware, one at a time is too slow */
3672 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3673 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3678 buffer_info
= next_buffer
;
3680 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3682 rx_ring
->next_to_clean
= i
;
3684 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3686 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3692 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3693 * @adapter: address of board private structure
3697 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3698 struct e1000_rx_ring
*rx_ring
,
3701 struct net_device
*netdev
= adapter
->netdev
;
3702 struct pci_dev
*pdev
= adapter
->pdev
;
3703 struct e1000_rx_desc
*rx_desc
;
3704 struct e1000_buffer
*buffer_info
;
3705 struct sk_buff
*skb
;
3707 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3709 i
= rx_ring
->next_to_use
;
3710 buffer_info
= &rx_ring
->buffer_info
[i
];
3712 while (cleaned_count
--) {
3713 if (!(skb
= buffer_info
->skb
))
3714 skb
= dev_alloc_skb(bufsz
);
3721 if (unlikely(!skb
)) {
3722 /* Better luck next round */
3723 adapter
->alloc_rx_buff_failed
++;
3727 /* Fix for errata 23, can't cross 64kB boundary */
3728 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3729 struct sk_buff
*oldskb
= skb
;
3730 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3731 "at %p\n", bufsz
, skb
->data
);
3732 /* Try again, without freeing the previous */
3733 skb
= dev_alloc_skb(bufsz
);
3734 /* Failed allocation, critical failure */
3736 dev_kfree_skb(oldskb
);
3740 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3743 dev_kfree_skb(oldskb
);
3744 break; /* while !buffer_info->skb */
3746 /* Use new allocation */
3747 dev_kfree_skb(oldskb
);
3750 /* Make buffer alignment 2 beyond a 16 byte boundary
3751 * this will result in a 16 byte aligned IP header after
3752 * the 14 byte MAC header is removed
3754 skb_reserve(skb
, NET_IP_ALIGN
);
3758 buffer_info
->skb
= skb
;
3759 buffer_info
->length
= adapter
->rx_buffer_len
;
3761 buffer_info
->dma
= pci_map_single(pdev
,
3763 adapter
->rx_buffer_len
,
3764 PCI_DMA_FROMDEVICE
);
3766 /* Fix for errata 23, can't cross 64kB boundary */
3767 if (!e1000_check_64k_bound(adapter
,
3768 (void *)(unsigned long)buffer_info
->dma
,
3769 adapter
->rx_buffer_len
)) {
3770 DPRINTK(RX_ERR
, ERR
,
3771 "dma align check failed: %u bytes at %p\n",
3772 adapter
->rx_buffer_len
,
3773 (void *)(unsigned long)buffer_info
->dma
);
3775 buffer_info
->skb
= NULL
;
3777 pci_unmap_single(pdev
, buffer_info
->dma
,
3778 adapter
->rx_buffer_len
,
3779 PCI_DMA_FROMDEVICE
);
3781 break; /* while !buffer_info->skb */
3783 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3784 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3786 if (unlikely(++i
== rx_ring
->count
))
3788 buffer_info
= &rx_ring
->buffer_info
[i
];
3791 if (likely(rx_ring
->next_to_use
!= i
)) {
3792 rx_ring
->next_to_use
= i
;
3793 if (unlikely(i
-- == 0))
3794 i
= (rx_ring
->count
- 1);
3796 /* Force memory writes to complete before letting h/w
3797 * know there are new descriptors to fetch. (Only
3798 * applicable for weak-ordered memory model archs,
3799 * such as IA-64). */
3801 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3806 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3807 * @adapter: address of board private structure
3811 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3812 struct e1000_rx_ring
*rx_ring
,
3815 struct net_device
*netdev
= adapter
->netdev
;
3816 struct pci_dev
*pdev
= adapter
->pdev
;
3817 union e1000_rx_desc_packet_split
*rx_desc
;
3818 struct e1000_buffer
*buffer_info
;
3819 struct e1000_ps_page
*ps_page
;
3820 struct e1000_ps_page_dma
*ps_page_dma
;
3821 struct sk_buff
*skb
;
3824 i
= rx_ring
->next_to_use
;
3825 buffer_info
= &rx_ring
->buffer_info
[i
];
3826 ps_page
= &rx_ring
->ps_page
[i
];
3827 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3829 while (cleaned_count
--) {
3830 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3832 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3833 if (j
< adapter
->rx_ps_pages
) {
3834 if (likely(!ps_page
->ps_page
[j
])) {
3835 ps_page
->ps_page
[j
] =
3836 alloc_page(GFP_ATOMIC
);
3837 if (unlikely(!ps_page
->ps_page
[j
])) {
3838 adapter
->alloc_rx_buff_failed
++;
3841 ps_page_dma
->ps_page_dma
[j
] =
3843 ps_page
->ps_page
[j
],
3845 PCI_DMA_FROMDEVICE
);
3847 /* Refresh the desc even if buffer_addrs didn't
3848 * change because each write-back erases
3851 rx_desc
->read
.buffer_addr
[j
+1] =
3852 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3854 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3857 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3859 if (unlikely(!skb
)) {
3860 adapter
->alloc_rx_buff_failed
++;
3864 /* Make buffer alignment 2 beyond a 16 byte boundary
3865 * this will result in a 16 byte aligned IP header after
3866 * the 14 byte MAC header is removed
3868 skb_reserve(skb
, NET_IP_ALIGN
);
3872 buffer_info
->skb
= skb
;
3873 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3874 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3875 adapter
->rx_ps_bsize0
,
3876 PCI_DMA_FROMDEVICE
);
3878 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3880 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
3881 buffer_info
= &rx_ring
->buffer_info
[i
];
3882 ps_page
= &rx_ring
->ps_page
[i
];
3883 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3887 if (likely(rx_ring
->next_to_use
!= i
)) {
3888 rx_ring
->next_to_use
= i
;
3889 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
3891 /* Force memory writes to complete before letting h/w
3892 * know there are new descriptors to fetch. (Only
3893 * applicable for weak-ordered memory model archs,
3894 * such as IA-64). */
3896 /* Hardware increments by 16 bytes, but packet split
3897 * descriptors are 32 bytes...so we increment tail
3900 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3905 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3910 e1000_smartspeed(struct e1000_adapter
*adapter
)
3912 uint16_t phy_status
;
3915 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3916 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3919 if (adapter
->smartspeed
== 0) {
3920 /* If Master/Slave config fault is asserted twice,
3921 * we assume back-to-back */
3922 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3923 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3924 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3925 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3926 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3927 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
3928 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3929 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3931 adapter
->smartspeed
++;
3932 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3933 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3935 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3936 MII_CR_RESTART_AUTO_NEG
);
3937 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3942 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3943 /* If still no link, perhaps using 2/3 pair cable */
3944 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3945 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3946 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3947 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3948 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3949 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3950 MII_CR_RESTART_AUTO_NEG
);
3951 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3954 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3955 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3956 adapter
->smartspeed
= 0;
3967 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3973 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3987 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3989 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3990 struct mii_ioctl_data
*data
= if_mii(ifr
);
3994 unsigned long flags
;
3996 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4001 data
->phy_id
= adapter
->hw
.phy_addr
;
4004 if (!capable(CAP_NET_ADMIN
))
4006 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4007 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4009 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4012 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4015 if (!capable(CAP_NET_ADMIN
))
4017 if (data
->reg_num
& ~(0x1F))
4019 mii_reg
= data
->val_in
;
4020 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4021 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4023 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4026 if (adapter
->hw
.phy_type
== e1000_phy_m88
) {
4027 switch (data
->reg_num
) {
4029 if (mii_reg
& MII_CR_POWER_DOWN
)
4031 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4032 adapter
->hw
.autoneg
= 1;
4033 adapter
->hw
.autoneg_advertised
= 0x2F;
4036 spddplx
= SPEED_1000
;
4037 else if (mii_reg
& 0x2000)
4038 spddplx
= SPEED_100
;
4041 spddplx
+= (mii_reg
& 0x100)
4044 retval
= e1000_set_spd_dplx(adapter
,
4047 spin_unlock_irqrestore(
4048 &adapter
->stats_lock
,
4053 if (netif_running(adapter
->netdev
)) {
4054 e1000_down(adapter
);
4057 e1000_reset(adapter
);
4059 case M88E1000_PHY_SPEC_CTRL
:
4060 case M88E1000_EXT_PHY_SPEC_CTRL
:
4061 if (e1000_phy_reset(&adapter
->hw
)) {
4062 spin_unlock_irqrestore(
4063 &adapter
->stats_lock
, flags
);
4069 switch (data
->reg_num
) {
4071 if (mii_reg
& MII_CR_POWER_DOWN
)
4073 if (netif_running(adapter
->netdev
)) {
4074 e1000_down(adapter
);
4077 e1000_reset(adapter
);
4081 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4086 return E1000_SUCCESS
;
4090 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4092 struct e1000_adapter
*adapter
= hw
->back
;
4093 int ret_val
= pci_set_mwi(adapter
->pdev
);
4096 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4100 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4102 struct e1000_adapter
*adapter
= hw
->back
;
4104 pci_clear_mwi(adapter
->pdev
);
4108 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4110 struct e1000_adapter
*adapter
= hw
->back
;
4112 pci_read_config_word(adapter
->pdev
, reg
, value
);
4116 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4118 struct e1000_adapter
*adapter
= hw
->back
;
4120 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4124 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4130 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4136 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4138 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4139 uint32_t ctrl
, rctl
;
4141 e1000_irq_disable(adapter
);
4142 adapter
->vlgrp
= grp
;
4145 /* enable VLAN tag insert/strip */
4146 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4147 ctrl
|= E1000_CTRL_VME
;
4148 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4150 /* enable VLAN receive filtering */
4151 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4152 rctl
|= E1000_RCTL_VFE
;
4153 rctl
&= ~E1000_RCTL_CFIEN
;
4154 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4155 e1000_update_mng_vlan(adapter
);
4157 /* disable VLAN tag insert/strip */
4158 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4159 ctrl
&= ~E1000_CTRL_VME
;
4160 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4162 /* disable VLAN filtering */
4163 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4164 rctl
&= ~E1000_RCTL_VFE
;
4165 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4166 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4167 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4168 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4172 e1000_irq_enable(adapter
);
4176 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4178 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4179 uint32_t vfta
, index
;
4181 if ((adapter
->hw
.mng_cookie
.status
&
4182 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4183 (vid
== adapter
->mng_vlan_id
))
4185 /* add VID to filter table */
4186 index
= (vid
>> 5) & 0x7F;
4187 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4188 vfta
|= (1 << (vid
& 0x1F));
4189 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4193 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4195 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4196 uint32_t vfta
, index
;
4198 e1000_irq_disable(adapter
);
4201 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4203 e1000_irq_enable(adapter
);
4205 if ((adapter
->hw
.mng_cookie
.status
&
4206 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4207 (vid
== adapter
->mng_vlan_id
)) {
4208 /* release control to f/w */
4209 e1000_release_hw_control(adapter
);
4213 /* remove VID from filter table */
4214 index
= (vid
>> 5) & 0x7F;
4215 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4216 vfta
&= ~(1 << (vid
& 0x1F));
4217 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4221 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4223 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4225 if (adapter
->vlgrp
) {
4227 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4228 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4230 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4236 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4238 adapter
->hw
.autoneg
= 0;
4240 /* Fiber NICs only allow 1000 gbps Full duplex */
4241 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4242 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4243 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4248 case SPEED_10
+ DUPLEX_HALF
:
4249 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4251 case SPEED_10
+ DUPLEX_FULL
:
4252 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4254 case SPEED_100
+ DUPLEX_HALF
:
4255 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4257 case SPEED_100
+ DUPLEX_FULL
:
4258 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4260 case SPEED_1000
+ DUPLEX_FULL
:
4261 adapter
->hw
.autoneg
= 1;
4262 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4264 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4266 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4273 /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config
4274 * space versus the 64 bytes that pci_[save|restore]_state handle
4276 #define PCIE_CONFIG_SPACE_LEN 256
4277 #define PCI_CONFIG_SPACE_LEN 64
4279 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4281 struct pci_dev
*dev
= adapter
->pdev
;
4284 if (adapter
->hw
.mac_type
>= e1000_82571
)
4285 size
= PCIE_CONFIG_SPACE_LEN
;
4287 size
= PCI_CONFIG_SPACE_LEN
;
4289 WARN_ON(adapter
->config_space
!= NULL
);
4291 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4292 if (!adapter
->config_space
) {
4293 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4296 for (i
= 0; i
< (size
/ 4); i
++)
4297 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4302 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4304 struct pci_dev
*dev
= adapter
->pdev
;
4307 if (adapter
->config_space
== NULL
)
4309 if (adapter
->hw
.mac_type
>= e1000_82571
)
4310 size
= PCIE_CONFIG_SPACE_LEN
;
4312 size
= PCI_CONFIG_SPACE_LEN
;
4313 for (i
= 0; i
< (size
/ 4); i
++)
4314 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4315 kfree(adapter
->config_space
);
4316 adapter
->config_space
= NULL
;
4319 #endif /* CONFIG_PM */
4322 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4324 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4325 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4326 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4327 uint32_t wufc
= adapter
->wol
;
4330 netif_device_detach(netdev
);
4332 if (netif_running(netdev
))
4333 e1000_down(adapter
);
4336 /* implement our own version of pci_save_state(pdev) because pci
4337 * express adapters have larger 256 byte config spaces */
4338 retval
= e1000_pci_save_state(adapter
);
4343 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4344 if (status
& E1000_STATUS_LU
)
4345 wufc
&= ~E1000_WUFC_LNKC
;
4348 e1000_setup_rctl(adapter
);
4349 e1000_set_multi(netdev
);
4351 /* turn on all-multi mode if wake on multicast is enabled */
4352 if (adapter
->wol
& E1000_WUFC_MC
) {
4353 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4354 rctl
|= E1000_RCTL_MPE
;
4355 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4358 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4359 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4360 /* advertise wake from D3Cold */
4361 #define E1000_CTRL_ADVD3WUC 0x00100000
4362 /* phy power management enable */
4363 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4364 ctrl
|= E1000_CTRL_ADVD3WUC
|
4365 E1000_CTRL_EN_PHY_PWR_MGMT
;
4366 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4369 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4370 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4371 /* keep the laser running in D3 */
4372 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4373 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4374 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4377 /* Allow time for pending master requests to run */
4378 e1000_disable_pciex_master(&adapter
->hw
);
4380 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4381 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4382 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4384 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4385 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4387 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4389 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4390 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4391 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4393 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4394 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0); /* 4 == D3 cold */
4396 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4399 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4400 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4401 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4402 if (manc
& E1000_MANC_SMBUS_EN
) {
4403 manc
|= E1000_MANC_ARP_EN
;
4404 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4405 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4407 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4408 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4410 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4414 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4415 * would have already happened in close and is redundant. */
4416 e1000_release_hw_control(adapter
);
4418 pci_disable_device(pdev
);
4420 retval
= pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4422 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4429 e1000_resume(struct pci_dev
*pdev
)
4431 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4432 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4434 uint32_t manc
, ret_val
;
4436 retval
= pci_set_power_state(pdev
, PCI_D0
);
4438 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4439 e1000_pci_restore_state(adapter
);
4440 ret_val
= pci_enable_device(pdev
);
4441 pci_set_master(pdev
);
4443 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4445 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4446 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0);
4448 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4450 e1000_reset(adapter
);
4451 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4453 if (netif_running(netdev
))
4456 netif_device_attach(netdev
);
4458 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4459 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4460 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4461 manc
&= ~(E1000_MANC_ARP_EN
);
4462 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4465 /* If the controller is 82573 and f/w is AMT, do not set
4466 * DRV_LOAD until the interface is up. For all other cases,
4467 * let the f/w know that the h/w is now under the control
4469 if (adapter
->hw
.mac_type
!= e1000_82573
||
4470 !e1000_check_mng_mode(&adapter
->hw
))
4471 e1000_get_hw_control(adapter
);
4476 #ifdef CONFIG_NET_POLL_CONTROLLER
4478 * Polling 'interrupt' - used by things like netconsole to send skbs
4479 * without having to re-enable interrupts. It's not called while
4480 * the interrupt routine is executing.
4483 e1000_netpoll(struct net_device
*netdev
)
4485 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4486 disable_irq(adapter
->pdev
->irq
);
4487 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4488 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4489 #ifndef CONFIG_E1000_NAPI
4490 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4492 enable_irq(adapter
->pdev
->irq
);