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(0x1096),
161 INTEL_E1000_ETHERNET_DEVICE(0x1098),
162 INTEL_E1000_ETHERNET_DEVICE(0x1099),
163 INTEL_E1000_ETHERNET_DEVICE(0x109A),
164 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
165 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
166 /* required last entry */
170 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
172 int e1000_up(struct e1000_adapter
*adapter
);
173 void e1000_down(struct e1000_adapter
*adapter
);
174 void e1000_reset(struct e1000_adapter
*adapter
);
175 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
176 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
177 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
178 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
179 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
180 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
181 struct e1000_tx_ring
*txdr
);
182 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
183 struct e1000_rx_ring
*rxdr
);
184 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
185 struct e1000_tx_ring
*tx_ring
);
186 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
187 struct e1000_rx_ring
*rx_ring
);
188 void e1000_update_stats(struct e1000_adapter
*adapter
);
190 /* Local Function Prototypes */
192 static int e1000_init_module(void);
193 static void e1000_exit_module(void);
194 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
195 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
196 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
197 static int e1000_sw_init(struct e1000_adapter
*adapter
);
198 static int e1000_open(struct net_device
*netdev
);
199 static int e1000_close(struct net_device
*netdev
);
200 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
201 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
202 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
203 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
204 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
205 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
206 struct e1000_tx_ring
*tx_ring
);
207 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
208 struct e1000_rx_ring
*rx_ring
);
209 static void e1000_set_multi(struct net_device
*netdev
);
210 static void e1000_update_phy_info(unsigned long data
);
211 static void e1000_watchdog(unsigned long data
);
212 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
213 static void e1000_82547_tx_fifo_stall(unsigned long data
);
214 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
215 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
216 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
217 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
218 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
219 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
220 struct e1000_tx_ring
*tx_ring
);
221 #ifdef CONFIG_E1000_NAPI
222 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
223 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
224 struct e1000_rx_ring
*rx_ring
,
225 int *work_done
, int work_to_do
);
226 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
227 struct e1000_rx_ring
*rx_ring
,
228 int *work_done
, int work_to_do
);
230 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
231 struct e1000_rx_ring
*rx_ring
);
232 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
233 struct e1000_rx_ring
*rx_ring
);
235 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
236 struct e1000_rx_ring
*rx_ring
,
238 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
239 struct e1000_rx_ring
*rx_ring
,
241 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
242 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
244 void e1000_set_ethtool_ops(struct net_device
*netdev
);
245 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
246 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
247 static void e1000_tx_timeout(struct net_device
*dev
);
248 static void e1000_reset_task(struct net_device
*dev
);
249 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
250 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
251 struct sk_buff
*skb
);
253 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
254 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
255 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
256 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
259 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
260 static int e1000_resume(struct pci_dev
*pdev
);
263 #ifdef CONFIG_NET_POLL_CONTROLLER
264 /* for netdump / net console */
265 static void e1000_netpoll (struct net_device
*netdev
);
269 /* Exported from other modules */
271 extern void e1000_check_options(struct e1000_adapter
*adapter
);
273 static struct pci_driver e1000_driver
= {
274 .name
= e1000_driver_name
,
275 .id_table
= e1000_pci_tbl
,
276 .probe
= e1000_probe
,
277 .remove
= __devexit_p(e1000_remove
),
278 /* Power Managment Hooks */
280 .suspend
= e1000_suspend
,
281 .resume
= e1000_resume
285 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
286 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
287 MODULE_LICENSE("GPL");
288 MODULE_VERSION(DRV_VERSION
);
290 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
291 module_param(debug
, int, 0);
292 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
295 * e1000_init_module - Driver Registration Routine
297 * e1000_init_module is the first routine called when the driver is
298 * loaded. All it does is register with the PCI subsystem.
302 e1000_init_module(void)
305 printk(KERN_INFO
"%s - version %s\n",
306 e1000_driver_string
, e1000_driver_version
);
308 printk(KERN_INFO
"%s\n", e1000_copyright
);
310 ret
= pci_module_init(&e1000_driver
);
315 module_init(e1000_init_module
);
318 * e1000_exit_module - Driver Exit Cleanup Routine
320 * e1000_exit_module is called just before the driver is removed
325 e1000_exit_module(void)
327 pci_unregister_driver(&e1000_driver
);
330 module_exit(e1000_exit_module
);
333 * e1000_irq_disable - Mask off interrupt generation on the NIC
334 * @adapter: board private structure
338 e1000_irq_disable(struct e1000_adapter
*adapter
)
340 atomic_inc(&adapter
->irq_sem
);
341 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
342 E1000_WRITE_FLUSH(&adapter
->hw
);
343 synchronize_irq(adapter
->pdev
->irq
);
347 * e1000_irq_enable - Enable default interrupt generation settings
348 * @adapter: board private structure
352 e1000_irq_enable(struct e1000_adapter
*adapter
)
354 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
355 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
356 E1000_WRITE_FLUSH(&adapter
->hw
);
361 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
363 struct net_device
*netdev
= adapter
->netdev
;
364 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
365 uint16_t old_vid
= adapter
->mng_vlan_id
;
366 if (adapter
->vlgrp
) {
367 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
368 if (adapter
->hw
.mng_cookie
.status
&
369 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
370 e1000_vlan_rx_add_vid(netdev
, vid
);
371 adapter
->mng_vlan_id
= vid
;
373 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
375 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
377 !adapter
->vlgrp
->vlan_devices
[old_vid
])
378 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
380 adapter
->mng_vlan_id
= vid
;
385 * e1000_release_hw_control - release control of the h/w to f/w
386 * @adapter: address of board private structure
388 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
389 * For ASF and Pass Through versions of f/w this means that the
390 * driver is no longer loaded. For AMT version (only with 82573) i
391 * of the f/w this means that the netowrk i/f is closed.
396 e1000_release_hw_control(struct e1000_adapter
*adapter
)
401 /* Let firmware taken over control of h/w */
402 switch (adapter
->hw
.mac_type
) {
405 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
406 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
407 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
410 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
411 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
412 swsm
& ~E1000_SWSM_DRV_LOAD
);
419 * e1000_get_hw_control - get control of the h/w from f/w
420 * @adapter: address of board private structure
422 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
423 * For ASF and Pass Through versions of f/w this means that
424 * the driver is loaded. For AMT version (only with 82573)
425 * of the f/w this means that the netowrk i/f is open.
430 e1000_get_hw_control(struct e1000_adapter
*adapter
)
434 /* Let firmware know the driver has taken over */
435 switch (adapter
->hw
.mac_type
) {
438 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
439 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
440 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
443 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
444 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
445 swsm
| E1000_SWSM_DRV_LOAD
);
453 e1000_up(struct e1000_adapter
*adapter
)
455 struct net_device
*netdev
= adapter
->netdev
;
458 /* hardware has been reset, we need to reload some things */
460 /* Reset the PHY if it was previously powered down */
461 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
463 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
464 if (mii_reg
& MII_CR_POWER_DOWN
)
465 e1000_phy_reset(&adapter
->hw
);
468 e1000_set_multi(netdev
);
470 e1000_restore_vlan(adapter
);
472 e1000_configure_tx(adapter
);
473 e1000_setup_rctl(adapter
);
474 e1000_configure_rx(adapter
);
475 /* call E1000_DESC_UNUSED which always leaves
476 * at least 1 descriptor unused to make sure
477 * next_to_use != next_to_clean */
478 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
479 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
480 adapter
->alloc_rx_buf(adapter
, ring
,
481 E1000_DESC_UNUSED(ring
));
484 #ifdef CONFIG_PCI_MSI
485 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
486 adapter
->have_msi
= TRUE
;
487 if ((err
= pci_enable_msi(adapter
->pdev
))) {
489 "Unable to allocate MSI interrupt Error: %d\n", err
);
490 adapter
->have_msi
= FALSE
;
494 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
495 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
496 netdev
->name
, netdev
))) {
498 "Unable to allocate interrupt Error: %d\n", err
);
502 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
504 mod_timer(&adapter
->watchdog_timer
, jiffies
);
506 #ifdef CONFIG_E1000_NAPI
507 netif_poll_enable(netdev
);
509 e1000_irq_enable(adapter
);
515 e1000_down(struct e1000_adapter
*adapter
)
517 struct net_device
*netdev
= adapter
->netdev
;
518 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
519 e1000_check_mng_mode(&adapter
->hw
);
521 e1000_irq_disable(adapter
);
523 free_irq(adapter
->pdev
->irq
, netdev
);
524 #ifdef CONFIG_PCI_MSI
525 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
526 adapter
->have_msi
== TRUE
)
527 pci_disable_msi(adapter
->pdev
);
529 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
530 del_timer_sync(&adapter
->watchdog_timer
);
531 del_timer_sync(&adapter
->phy_info_timer
);
533 #ifdef CONFIG_E1000_NAPI
534 netif_poll_disable(netdev
);
536 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
537 adapter
->link_speed
= 0;
538 adapter
->link_duplex
= 0;
539 netif_carrier_off(netdev
);
540 netif_stop_queue(netdev
);
542 e1000_reset(adapter
);
543 e1000_clean_all_tx_rings(adapter
);
544 e1000_clean_all_rx_rings(adapter
);
546 /* Power down the PHY so no link is implied when interface is down *
547 * The PHY cannot be powered down if any of the following is TRUE *
550 * (c) SoL/IDER session is active */
551 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
552 adapter
->hw
.media_type
== e1000_media_type_copper
&&
553 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
555 !e1000_check_phy_reset_block(&adapter
->hw
)) {
557 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
558 mii_reg
|= MII_CR_POWER_DOWN
;
559 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
565 e1000_reset(struct e1000_adapter
*adapter
)
568 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
570 /* Repartition Pba for greater than 9k mtu
571 * To take effect CTRL.RST is required.
574 switch (adapter
->hw
.mac_type
) {
576 case e1000_82547_rev_2
:
581 case e1000_80003es2lan
:
592 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
593 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
594 pba
-= 8; /* allocate more FIFO for Tx */
597 if (adapter
->hw
.mac_type
== e1000_82547
) {
598 adapter
->tx_fifo_head
= 0;
599 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
600 adapter
->tx_fifo_size
=
601 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
602 atomic_set(&adapter
->tx_fifo_stall
, 0);
605 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
607 /* flow control settings */
608 /* Set the FC high water mark to 90% of the FIFO size.
609 * Required to clear last 3 LSB */
610 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
612 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
613 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
614 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
615 adapter
->hw
.fc_pause_time
= 0xFFFF;
617 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
618 adapter
->hw
.fc_send_xon
= 1;
619 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
621 /* Allow time for pending master requests to run */
622 e1000_reset_hw(&adapter
->hw
);
623 if (adapter
->hw
.mac_type
>= e1000_82544
)
624 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
625 if (e1000_init_hw(&adapter
->hw
))
626 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
627 e1000_update_mng_vlan(adapter
);
628 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
629 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
631 e1000_reset_adaptive(&adapter
->hw
);
632 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
633 if (adapter
->en_mng_pt
) {
634 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
635 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
636 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
641 * e1000_probe - Device Initialization Routine
642 * @pdev: PCI device information struct
643 * @ent: entry in e1000_pci_tbl
645 * Returns 0 on success, negative on failure
647 * e1000_probe initializes an adapter identified by a pci_dev structure.
648 * The OS initialization, configuring of the adapter private structure,
649 * and a hardware reset occur.
653 e1000_probe(struct pci_dev
*pdev
,
654 const struct pci_device_id
*ent
)
656 struct net_device
*netdev
;
657 struct e1000_adapter
*adapter
;
658 unsigned long mmio_start
, mmio_len
;
660 static int cards_found
= 0;
661 static int e1000_ksp3_port_a
= 0; /* global ksp3 port a indication */
662 int i
, err
, pci_using_dac
;
663 uint16_t eeprom_data
;
664 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
665 if ((err
= pci_enable_device(pdev
)))
668 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
671 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
672 E1000_ERR("No usable DMA configuration, aborting\n");
678 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
681 pci_set_master(pdev
);
683 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
686 goto err_alloc_etherdev
;
689 SET_MODULE_OWNER(netdev
);
690 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
692 pci_set_drvdata(pdev
, netdev
);
693 adapter
= netdev_priv(netdev
);
694 adapter
->netdev
= netdev
;
695 adapter
->pdev
= pdev
;
696 adapter
->hw
.back
= adapter
;
697 adapter
->msg_enable
= (1 << debug
) - 1;
699 mmio_start
= pci_resource_start(pdev
, BAR_0
);
700 mmio_len
= pci_resource_len(pdev
, BAR_0
);
702 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
703 if (!adapter
->hw
.hw_addr
) {
708 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
709 if (pci_resource_len(pdev
, i
) == 0)
711 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
712 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
717 netdev
->open
= &e1000_open
;
718 netdev
->stop
= &e1000_close
;
719 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
720 netdev
->get_stats
= &e1000_get_stats
;
721 netdev
->set_multicast_list
= &e1000_set_multi
;
722 netdev
->set_mac_address
= &e1000_set_mac
;
723 netdev
->change_mtu
= &e1000_change_mtu
;
724 netdev
->do_ioctl
= &e1000_ioctl
;
725 e1000_set_ethtool_ops(netdev
);
726 netdev
->tx_timeout
= &e1000_tx_timeout
;
727 netdev
->watchdog_timeo
= 5 * HZ
;
728 #ifdef CONFIG_E1000_NAPI
729 netdev
->poll
= &e1000_clean
;
732 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
733 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
734 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
735 #ifdef CONFIG_NET_POLL_CONTROLLER
736 netdev
->poll_controller
= e1000_netpoll
;
738 strcpy(netdev
->name
, pci_name(pdev
));
740 netdev
->mem_start
= mmio_start
;
741 netdev
->mem_end
= mmio_start
+ mmio_len
;
742 netdev
->base_addr
= adapter
->hw
.io_base
;
744 adapter
->bd_number
= cards_found
;
746 /* setup the private structure */
748 if ((err
= e1000_sw_init(adapter
)))
751 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
752 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
754 /* if ksp3, indicate if it's port a being setup */
755 if (pdev
->device
== E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
&&
756 e1000_ksp3_port_a
== 0)
757 adapter
->ksp3_port_a
= 1;
759 /* Reset for multiple KP3 adapters */
760 if (e1000_ksp3_port_a
== 4)
761 e1000_ksp3_port_a
= 0;
763 if (adapter
->hw
.mac_type
>= e1000_82543
) {
764 netdev
->features
= NETIF_F_SG
|
768 NETIF_F_HW_VLAN_FILTER
;
772 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
773 (adapter
->hw
.mac_type
!= e1000_82547
))
774 netdev
->features
|= NETIF_F_TSO
;
776 #ifdef NETIF_F_TSO_IPV6
777 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
778 netdev
->features
|= NETIF_F_TSO_IPV6
;
782 netdev
->features
|= NETIF_F_HIGHDMA
;
784 /* hard_start_xmit is safe against parallel locking */
785 netdev
->features
|= NETIF_F_LLTX
;
787 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
789 /* before reading the EEPROM, reset the controller to
790 * put the device in a known good starting state */
792 e1000_reset_hw(&adapter
->hw
);
794 /* make sure the EEPROM is good */
796 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
797 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
802 /* copy the MAC address out of the EEPROM */
804 if (e1000_read_mac_addr(&adapter
->hw
))
805 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
806 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
807 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
809 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
810 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
815 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
817 e1000_get_bus_info(&adapter
->hw
);
819 init_timer(&adapter
->tx_fifo_stall_timer
);
820 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
821 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
823 init_timer(&adapter
->watchdog_timer
);
824 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
825 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
827 INIT_WORK(&adapter
->watchdog_task
,
828 (void (*)(void *))e1000_watchdog_task
, adapter
);
830 init_timer(&adapter
->phy_info_timer
);
831 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
832 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
834 INIT_WORK(&adapter
->reset_task
,
835 (void (*)(void *))e1000_reset_task
, netdev
);
837 /* we're going to reset, so assume we have no link for now */
839 netif_carrier_off(netdev
);
840 netif_stop_queue(netdev
);
842 e1000_check_options(adapter
);
844 /* Initial Wake on LAN setting
845 * If APM wake is enabled in the EEPROM,
846 * enable the ACPI Magic Packet filter
849 switch (adapter
->hw
.mac_type
) {
850 case e1000_82542_rev2_0
:
851 case e1000_82542_rev2_1
:
855 e1000_read_eeprom(&adapter
->hw
,
856 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
857 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
860 case e1000_82546_rev_3
:
862 case e1000_80003es2lan
:
863 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
864 e1000_read_eeprom(&adapter
->hw
,
865 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
870 e1000_read_eeprom(&adapter
->hw
,
871 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
874 if (eeprom_data
& eeprom_apme_mask
)
875 adapter
->wol
|= E1000_WUFC_MAG
;
877 /* print bus type/speed/width info */
879 struct e1000_hw
*hw
= &adapter
->hw
;
880 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
881 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
882 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
883 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
884 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
885 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
886 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
887 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
888 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
889 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
890 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
894 for (i
= 0; i
< 6; i
++)
895 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
897 /* reset the hardware with the new settings */
898 e1000_reset(adapter
);
900 /* If the controller is 82573 and f/w is AMT, do not set
901 * DRV_LOAD until the interface is up. For all other cases,
902 * let the f/w know that the h/w is now under the control
904 if (adapter
->hw
.mac_type
!= e1000_82573
||
905 !e1000_check_mng_mode(&adapter
->hw
))
906 e1000_get_hw_control(adapter
);
908 strcpy(netdev
->name
, "eth%d");
909 if ((err
= register_netdev(netdev
)))
912 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
920 iounmap(adapter
->hw
.hw_addr
);
924 pci_release_regions(pdev
);
929 * e1000_remove - Device Removal Routine
930 * @pdev: PCI device information struct
932 * e1000_remove is called by the PCI subsystem to alert the driver
933 * that it should release a PCI device. The could be caused by a
934 * Hot-Plug event, or because the driver is going to be removed from
938 static void __devexit
939 e1000_remove(struct pci_dev
*pdev
)
941 struct net_device
*netdev
= pci_get_drvdata(pdev
);
942 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
944 #ifdef CONFIG_E1000_NAPI
948 flush_scheduled_work();
950 if (adapter
->hw
.mac_type
>= e1000_82540
&&
951 adapter
->hw
.media_type
== e1000_media_type_copper
) {
952 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
953 if (manc
& E1000_MANC_SMBUS_EN
) {
954 manc
|= E1000_MANC_ARP_EN
;
955 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
959 /* Release control of h/w to f/w. If f/w is AMT enabled, this
960 * would have already happened in close and is redundant. */
961 e1000_release_hw_control(adapter
);
963 unregister_netdev(netdev
);
964 #ifdef CONFIG_E1000_NAPI
965 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
966 __dev_put(&adapter
->polling_netdev
[i
]);
969 if (!e1000_check_phy_reset_block(&adapter
->hw
))
970 e1000_phy_hw_reset(&adapter
->hw
);
972 kfree(adapter
->tx_ring
);
973 kfree(adapter
->rx_ring
);
974 #ifdef CONFIG_E1000_NAPI
975 kfree(adapter
->polling_netdev
);
978 iounmap(adapter
->hw
.hw_addr
);
979 pci_release_regions(pdev
);
983 pci_disable_device(pdev
);
987 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
988 * @adapter: board private structure to initialize
990 * e1000_sw_init initializes the Adapter private data structure.
991 * Fields are initialized based on PCI device information and
992 * OS network device settings (MTU size).
996 e1000_sw_init(struct e1000_adapter
*adapter
)
998 struct e1000_hw
*hw
= &adapter
->hw
;
999 struct net_device
*netdev
= adapter
->netdev
;
1000 struct pci_dev
*pdev
= adapter
->pdev
;
1001 #ifdef CONFIG_E1000_NAPI
1005 /* PCI config space info */
1007 hw
->vendor_id
= pdev
->vendor
;
1008 hw
->device_id
= pdev
->device
;
1009 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
1010 hw
->subsystem_id
= pdev
->subsystem_device
;
1012 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
1014 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
1016 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
1017 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
1018 hw
->max_frame_size
= netdev
->mtu
+
1019 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
1020 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
1022 /* identify the MAC */
1024 if (e1000_set_mac_type(hw
)) {
1025 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1029 /* initialize eeprom parameters */
1031 if (e1000_init_eeprom_params(hw
)) {
1032 E1000_ERR("EEPROM initialization failed\n");
1036 switch (hw
->mac_type
) {
1041 case e1000_82541_rev_2
:
1042 case e1000_82547_rev_2
:
1043 hw
->phy_init_script
= 1;
1047 e1000_set_media_type(hw
);
1049 hw
->wait_autoneg_complete
= FALSE
;
1050 hw
->tbi_compatibility_en
= TRUE
;
1051 hw
->adaptive_ifs
= TRUE
;
1053 /* Copper options */
1055 if (hw
->media_type
== e1000_media_type_copper
) {
1056 hw
->mdix
= AUTO_ALL_MODES
;
1057 hw
->disable_polarity_correction
= FALSE
;
1058 hw
->master_slave
= E1000_MASTER_SLAVE
;
1061 adapter
->num_tx_queues
= 1;
1062 adapter
->num_rx_queues
= 1;
1064 if (e1000_alloc_queues(adapter
)) {
1065 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1069 #ifdef CONFIG_E1000_NAPI
1070 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1071 adapter
->polling_netdev
[i
].priv
= adapter
;
1072 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1073 adapter
->polling_netdev
[i
].weight
= 64;
1074 dev_hold(&adapter
->polling_netdev
[i
]);
1075 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1077 spin_lock_init(&adapter
->tx_queue_lock
);
1080 atomic_set(&adapter
->irq_sem
, 1);
1081 spin_lock_init(&adapter
->stats_lock
);
1087 * e1000_alloc_queues - Allocate memory for all rings
1088 * @adapter: board private structure to initialize
1090 * We allocate one ring per queue at run-time since we don't know the
1091 * number of queues at compile-time. The polling_netdev array is
1092 * intended for Multiqueue, but should work fine with a single queue.
1095 static int __devinit
1096 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1100 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1101 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1102 if (!adapter
->tx_ring
)
1104 memset(adapter
->tx_ring
, 0, size
);
1106 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1107 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1108 if (!adapter
->rx_ring
) {
1109 kfree(adapter
->tx_ring
);
1112 memset(adapter
->rx_ring
, 0, size
);
1114 #ifdef CONFIG_E1000_NAPI
1115 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1116 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1117 if (!adapter
->polling_netdev
) {
1118 kfree(adapter
->tx_ring
);
1119 kfree(adapter
->rx_ring
);
1122 memset(adapter
->polling_netdev
, 0, size
);
1125 return E1000_SUCCESS
;
1129 * e1000_open - Called when a network interface is made active
1130 * @netdev: network interface device structure
1132 * Returns 0 on success, negative value on failure
1134 * The open entry point is called when a network interface is made
1135 * active by the system (IFF_UP). At this point all resources needed
1136 * for transmit and receive operations are allocated, the interrupt
1137 * handler is registered with the OS, the watchdog timer is started,
1138 * and the stack is notified that the interface is ready.
1142 e1000_open(struct net_device
*netdev
)
1144 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1147 /* allocate transmit descriptors */
1149 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1152 /* allocate receive descriptors */
1154 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1157 if ((err
= e1000_up(adapter
)))
1159 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1160 if ((adapter
->hw
.mng_cookie
.status
&
1161 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1162 e1000_update_mng_vlan(adapter
);
1165 /* If AMT is enabled, let the firmware know that the network
1166 * interface is now open */
1167 if (adapter
->hw
.mac_type
== e1000_82573
&&
1168 e1000_check_mng_mode(&adapter
->hw
))
1169 e1000_get_hw_control(adapter
);
1171 return E1000_SUCCESS
;
1174 e1000_free_all_rx_resources(adapter
);
1176 e1000_free_all_tx_resources(adapter
);
1178 e1000_reset(adapter
);
1184 * e1000_close - Disables a network interface
1185 * @netdev: network interface device structure
1187 * Returns 0, this is not allowed to fail
1189 * The close entry point is called when an interface is de-activated
1190 * by the OS. The hardware is still under the drivers control, but
1191 * needs to be disabled. A global MAC reset is issued to stop the
1192 * hardware, and all transmit and receive resources are freed.
1196 e1000_close(struct net_device
*netdev
)
1198 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1200 e1000_down(adapter
);
1202 e1000_free_all_tx_resources(adapter
);
1203 e1000_free_all_rx_resources(adapter
);
1205 if ((adapter
->hw
.mng_cookie
.status
&
1206 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1207 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1210 /* If AMT is enabled, let the firmware know that the network
1211 * interface is now closed */
1212 if (adapter
->hw
.mac_type
== e1000_82573
&&
1213 e1000_check_mng_mode(&adapter
->hw
))
1214 e1000_release_hw_control(adapter
);
1220 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1221 * @adapter: address of board private structure
1222 * @start: address of beginning of memory
1223 * @len: length of memory
1225 static inline boolean_t
1226 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1227 void *start
, unsigned long len
)
1229 unsigned long begin
= (unsigned long) start
;
1230 unsigned long end
= begin
+ len
;
1232 /* First rev 82545 and 82546 need to not allow any memory
1233 * write location to cross 64k boundary due to errata 23 */
1234 if (adapter
->hw
.mac_type
== e1000_82545
||
1235 adapter
->hw
.mac_type
== e1000_82546
) {
1236 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1243 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1244 * @adapter: board private structure
1245 * @txdr: tx descriptor ring (for a specific queue) to setup
1247 * Return 0 on success, negative on failure
1251 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1252 struct e1000_tx_ring
*txdr
)
1254 struct pci_dev
*pdev
= adapter
->pdev
;
1257 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1259 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1260 if (!txdr
->buffer_info
) {
1262 "Unable to allocate memory for the transmit descriptor ring\n");
1265 memset(txdr
->buffer_info
, 0, size
);
1267 /* round up to nearest 4K */
1269 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1270 E1000_ROUNDUP(txdr
->size
, 4096);
1272 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1275 vfree(txdr
->buffer_info
);
1277 "Unable to allocate memory for the transmit descriptor ring\n");
1281 /* Fix for errata 23, can't cross 64kB boundary */
1282 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1283 void *olddesc
= txdr
->desc
;
1284 dma_addr_t olddma
= txdr
->dma
;
1285 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1286 "at %p\n", txdr
->size
, txdr
->desc
);
1287 /* Try again, without freeing the previous */
1288 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1289 /* Failed allocation, critical failure */
1291 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1292 goto setup_tx_desc_die
;
1295 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1297 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1299 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1301 "Unable to allocate aligned memory "
1302 "for the transmit descriptor ring\n");
1303 vfree(txdr
->buffer_info
);
1306 /* Free old allocation, new allocation was successful */
1307 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1310 memset(txdr
->desc
, 0, txdr
->size
);
1312 txdr
->next_to_use
= 0;
1313 txdr
->next_to_clean
= 0;
1314 spin_lock_init(&txdr
->tx_lock
);
1320 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1321 * (Descriptors) for all queues
1322 * @adapter: board private structure
1324 * If this function returns with an error, then it's possible one or
1325 * more of the rings is populated (while the rest are not). It is the
1326 * callers duty to clean those orphaned rings.
1328 * Return 0 on success, negative on failure
1332 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1336 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1337 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1340 "Allocation for Tx Queue %u failed\n", i
);
1349 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1350 * @adapter: board private structure
1352 * Configure the Tx unit of the MAC after a reset.
1356 e1000_configure_tx(struct e1000_adapter
*adapter
)
1359 struct e1000_hw
*hw
= &adapter
->hw
;
1360 uint32_t tdlen
, tctl
, tipg
, tarc
;
1361 uint32_t ipgr1
, ipgr2
;
1363 /* Setup the HW Tx Head and Tail descriptor pointers */
1365 switch (adapter
->num_tx_queues
) {
1368 tdba
= adapter
->tx_ring
[0].dma
;
1369 tdlen
= adapter
->tx_ring
[0].count
*
1370 sizeof(struct e1000_tx_desc
);
1371 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1372 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1373 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1374 E1000_WRITE_REG(hw
, TDH
, 0);
1375 E1000_WRITE_REG(hw
, TDT
, 0);
1376 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1377 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1381 /* Set the default values for the Tx Inter Packet Gap timer */
1383 if (hw
->media_type
== e1000_media_type_fiber
||
1384 hw
->media_type
== e1000_media_type_internal_serdes
)
1385 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1387 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1389 switch (hw
->mac_type
) {
1390 case e1000_82542_rev2_0
:
1391 case e1000_82542_rev2_1
:
1392 tipg
= DEFAULT_82542_TIPG_IPGT
;
1393 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1394 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1396 case e1000_80003es2lan
:
1397 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1398 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1401 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1402 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1405 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1406 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1407 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1409 /* Set the Tx Interrupt Delay register */
1411 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1412 if (hw
->mac_type
>= e1000_82540
)
1413 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1415 /* Program the Transmit Control Register */
1417 tctl
= E1000_READ_REG(hw
, TCTL
);
1419 tctl
&= ~E1000_TCTL_CT
;
1420 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1421 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1424 /* disable Multiple Reads for debugging */
1425 tctl
&= ~E1000_TCTL_MULR
;
1428 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1429 tarc
= E1000_READ_REG(hw
, TARC0
);
1430 tarc
|= ((1 << 25) | (1 << 21));
1431 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1432 tarc
= E1000_READ_REG(hw
, TARC1
);
1434 if (tctl
& E1000_TCTL_MULR
)
1438 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1439 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1440 tarc
= E1000_READ_REG(hw
, TARC0
);
1442 if (hw
->media_type
== e1000_media_type_internal_serdes
)
1444 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1445 tarc
= E1000_READ_REG(hw
, TARC1
);
1447 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1450 e1000_config_collision_dist(hw
);
1452 /* Setup Transmit Descriptor Settings for eop descriptor */
1453 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1456 if (hw
->mac_type
< e1000_82543
)
1457 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1459 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1461 /* Cache if we're 82544 running in PCI-X because we'll
1462 * need this to apply a workaround later in the send path. */
1463 if (hw
->mac_type
== e1000_82544
&&
1464 hw
->bus_type
== e1000_bus_type_pcix
)
1465 adapter
->pcix_82544
= 1;
1467 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1472 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1473 * @adapter: board private structure
1474 * @rxdr: rx descriptor ring (for a specific queue) to setup
1476 * Returns 0 on success, negative on failure
1480 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1481 struct e1000_rx_ring
*rxdr
)
1483 struct pci_dev
*pdev
= adapter
->pdev
;
1486 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1487 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1488 if (!rxdr
->buffer_info
) {
1490 "Unable to allocate memory for the receive descriptor ring\n");
1493 memset(rxdr
->buffer_info
, 0, size
);
1495 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1496 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1497 if (!rxdr
->ps_page
) {
1498 vfree(rxdr
->buffer_info
);
1500 "Unable to allocate memory for the receive descriptor ring\n");
1503 memset(rxdr
->ps_page
, 0, size
);
1505 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1506 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1507 if (!rxdr
->ps_page_dma
) {
1508 vfree(rxdr
->buffer_info
);
1509 kfree(rxdr
->ps_page
);
1511 "Unable to allocate memory for the receive descriptor ring\n");
1514 memset(rxdr
->ps_page_dma
, 0, size
);
1516 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1517 desc_len
= sizeof(struct e1000_rx_desc
);
1519 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1521 /* Round up to nearest 4K */
1523 rxdr
->size
= rxdr
->count
* desc_len
;
1524 E1000_ROUNDUP(rxdr
->size
, 4096);
1526 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1530 "Unable to allocate memory for the receive descriptor ring\n");
1532 vfree(rxdr
->buffer_info
);
1533 kfree(rxdr
->ps_page
);
1534 kfree(rxdr
->ps_page_dma
);
1538 /* Fix for errata 23, can't cross 64kB boundary */
1539 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1540 void *olddesc
= rxdr
->desc
;
1541 dma_addr_t olddma
= rxdr
->dma
;
1542 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1543 "at %p\n", rxdr
->size
, rxdr
->desc
);
1544 /* Try again, without freeing the previous */
1545 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1546 /* Failed allocation, critical failure */
1548 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1550 "Unable to allocate memory "
1551 "for the receive descriptor ring\n");
1552 goto setup_rx_desc_die
;
1555 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1557 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1559 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1561 "Unable to allocate aligned memory "
1562 "for the receive descriptor ring\n");
1563 goto setup_rx_desc_die
;
1565 /* Free old allocation, new allocation was successful */
1566 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1569 memset(rxdr
->desc
, 0, rxdr
->size
);
1571 rxdr
->next_to_clean
= 0;
1572 rxdr
->next_to_use
= 0;
1578 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1579 * (Descriptors) for all queues
1580 * @adapter: board private structure
1582 * If this function returns with an error, then it's possible one or
1583 * more of the rings is populated (while the rest are not). It is the
1584 * callers duty to clean those orphaned rings.
1586 * Return 0 on success, negative on failure
1590 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1594 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1595 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1598 "Allocation for Rx Queue %u failed\n", i
);
1607 * e1000_setup_rctl - configure the receive control registers
1608 * @adapter: Board private structure
1610 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1611 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1613 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1615 uint32_t rctl
, rfctl
;
1616 uint32_t psrctl
= 0;
1617 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1621 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1623 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1625 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1626 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1627 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1629 if (adapter
->hw
.mac_type
> e1000_82543
)
1630 rctl
|= E1000_RCTL_SECRC
;
1632 if (adapter
->hw
.tbi_compatibility_on
== 1)
1633 rctl
|= E1000_RCTL_SBP
;
1635 rctl
&= ~E1000_RCTL_SBP
;
1637 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1638 rctl
&= ~E1000_RCTL_LPE
;
1640 rctl
|= E1000_RCTL_LPE
;
1642 /* Setup buffer sizes */
1643 if (adapter
->hw
.mac_type
>= e1000_82571
) {
1644 /* We can now specify buffers in 1K increments.
1645 * BSIZE and BSEX are ignored in this case. */
1646 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1648 rctl
&= ~E1000_RCTL_SZ_4096
;
1649 rctl
|= E1000_RCTL_BSEX
;
1650 switch (adapter
->rx_buffer_len
) {
1651 case E1000_RXBUFFER_2048
:
1653 rctl
|= E1000_RCTL_SZ_2048
;
1654 rctl
&= ~E1000_RCTL_BSEX
;
1656 case E1000_RXBUFFER_4096
:
1657 rctl
|= E1000_RCTL_SZ_4096
;
1659 case E1000_RXBUFFER_8192
:
1660 rctl
|= E1000_RCTL_SZ_8192
;
1662 case E1000_RXBUFFER_16384
:
1663 rctl
|= E1000_RCTL_SZ_16384
;
1668 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1669 /* 82571 and greater support packet-split where the protocol
1670 * header is placed in skb->data and the packet data is
1671 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1672 * In the case of a non-split, skb->data is linearly filled,
1673 * followed by the page buffers. Therefore, skb->data is
1674 * sized to hold the largest protocol header.
1676 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1677 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1679 adapter
->rx_ps_pages
= pages
;
1681 adapter
->rx_ps_pages
= 0;
1683 if (adapter
->rx_ps_pages
) {
1684 /* Configure extra packet-split registers */
1685 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1686 rfctl
|= E1000_RFCTL_EXTEN
;
1687 /* disable IPv6 packet split support */
1688 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1689 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1691 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1693 psrctl
|= adapter
->rx_ps_bsize0
>>
1694 E1000_PSRCTL_BSIZE0_SHIFT
;
1696 switch (adapter
->rx_ps_pages
) {
1698 psrctl
|= PAGE_SIZE
<<
1699 E1000_PSRCTL_BSIZE3_SHIFT
;
1701 psrctl
|= PAGE_SIZE
<<
1702 E1000_PSRCTL_BSIZE2_SHIFT
;
1704 psrctl
|= PAGE_SIZE
>>
1705 E1000_PSRCTL_BSIZE1_SHIFT
;
1709 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1712 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1716 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1717 * @adapter: board private structure
1719 * Configure the Rx unit of the MAC after a reset.
1723 e1000_configure_rx(struct e1000_adapter
*adapter
)
1726 struct e1000_hw
*hw
= &adapter
->hw
;
1727 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1729 if (adapter
->rx_ps_pages
) {
1730 rdlen
= adapter
->rx_ring
[0].count
*
1731 sizeof(union e1000_rx_desc_packet_split
);
1732 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1733 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1735 rdlen
= adapter
->rx_ring
[0].count
*
1736 sizeof(struct e1000_rx_desc
);
1737 adapter
->clean_rx
= e1000_clean_rx_irq
;
1738 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1741 /* disable receives while setting up the descriptors */
1742 rctl
= E1000_READ_REG(hw
, RCTL
);
1743 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1745 /* set the Receive Delay Timer Register */
1746 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1748 if (hw
->mac_type
>= e1000_82540
) {
1749 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1750 if (adapter
->itr
> 1)
1751 E1000_WRITE_REG(hw
, ITR
,
1752 1000000000 / (adapter
->itr
* 256));
1755 if (hw
->mac_type
>= e1000_82571
) {
1756 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1757 /* Reset delay timers after every interrupt */
1758 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1759 #ifdef CONFIG_E1000_NAPI
1760 /* Auto-Mask interrupts upon ICR read. */
1761 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1763 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1764 E1000_WRITE_REG(hw
, IAM
, ~0);
1765 E1000_WRITE_FLUSH(hw
);
1768 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1769 * the Base and Length of the Rx Descriptor Ring */
1770 switch (adapter
->num_rx_queues
) {
1773 rdba
= adapter
->rx_ring
[0].dma
;
1774 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1775 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1776 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1777 E1000_WRITE_REG(hw
, RDH
, 0);
1778 E1000_WRITE_REG(hw
, RDT
, 0);
1779 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1780 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1784 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1785 if (hw
->mac_type
>= e1000_82543
) {
1786 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1787 if (adapter
->rx_csum
== TRUE
) {
1788 rxcsum
|= E1000_RXCSUM_TUOFL
;
1790 /* Enable 82571 IPv4 payload checksum for UDP fragments
1791 * Must be used in conjunction with packet-split. */
1792 if ((hw
->mac_type
>= e1000_82571
) &&
1793 (adapter
->rx_ps_pages
)) {
1794 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1797 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1798 /* don't need to clear IPPCSE as it defaults to 0 */
1800 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1803 if (hw
->mac_type
== e1000_82573
)
1804 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1806 /* Enable Receives */
1807 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1811 * e1000_free_tx_resources - Free Tx Resources per Queue
1812 * @adapter: board private structure
1813 * @tx_ring: Tx descriptor ring for a specific queue
1815 * Free all transmit software resources
1819 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1820 struct e1000_tx_ring
*tx_ring
)
1822 struct pci_dev
*pdev
= adapter
->pdev
;
1824 e1000_clean_tx_ring(adapter
, tx_ring
);
1826 vfree(tx_ring
->buffer_info
);
1827 tx_ring
->buffer_info
= NULL
;
1829 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1831 tx_ring
->desc
= NULL
;
1835 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1836 * @adapter: board private structure
1838 * Free all transmit software resources
1842 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1846 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1847 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1851 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1852 struct e1000_buffer
*buffer_info
)
1854 if (buffer_info
->dma
) {
1855 pci_unmap_page(adapter
->pdev
,
1857 buffer_info
->length
,
1860 if (buffer_info
->skb
)
1861 dev_kfree_skb_any(buffer_info
->skb
);
1862 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1866 * e1000_clean_tx_ring - Free Tx Buffers
1867 * @adapter: board private structure
1868 * @tx_ring: ring to be cleaned
1872 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1873 struct e1000_tx_ring
*tx_ring
)
1875 struct e1000_buffer
*buffer_info
;
1879 /* Free all the Tx ring sk_buffs */
1881 for (i
= 0; i
< tx_ring
->count
; i
++) {
1882 buffer_info
= &tx_ring
->buffer_info
[i
];
1883 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1886 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1887 memset(tx_ring
->buffer_info
, 0, size
);
1889 /* Zero out the descriptor ring */
1891 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1893 tx_ring
->next_to_use
= 0;
1894 tx_ring
->next_to_clean
= 0;
1895 tx_ring
->last_tx_tso
= 0;
1897 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1898 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1902 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1903 * @adapter: board private structure
1907 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1911 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1912 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1916 * e1000_free_rx_resources - Free Rx Resources
1917 * @adapter: board private structure
1918 * @rx_ring: ring to clean the resources from
1920 * Free all receive software resources
1924 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1925 struct e1000_rx_ring
*rx_ring
)
1927 struct pci_dev
*pdev
= adapter
->pdev
;
1929 e1000_clean_rx_ring(adapter
, rx_ring
);
1931 vfree(rx_ring
->buffer_info
);
1932 rx_ring
->buffer_info
= NULL
;
1933 kfree(rx_ring
->ps_page
);
1934 rx_ring
->ps_page
= NULL
;
1935 kfree(rx_ring
->ps_page_dma
);
1936 rx_ring
->ps_page_dma
= NULL
;
1938 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1940 rx_ring
->desc
= NULL
;
1944 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1945 * @adapter: board private structure
1947 * Free all receive software resources
1951 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1955 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1956 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1960 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1961 * @adapter: board private structure
1962 * @rx_ring: ring to free buffers from
1966 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1967 struct e1000_rx_ring
*rx_ring
)
1969 struct e1000_buffer
*buffer_info
;
1970 struct e1000_ps_page
*ps_page
;
1971 struct e1000_ps_page_dma
*ps_page_dma
;
1972 struct pci_dev
*pdev
= adapter
->pdev
;
1976 /* Free all the Rx ring sk_buffs */
1977 for (i
= 0; i
< rx_ring
->count
; i
++) {
1978 buffer_info
= &rx_ring
->buffer_info
[i
];
1979 if (buffer_info
->skb
) {
1980 pci_unmap_single(pdev
,
1982 buffer_info
->length
,
1983 PCI_DMA_FROMDEVICE
);
1985 dev_kfree_skb(buffer_info
->skb
);
1986 buffer_info
->skb
= NULL
;
1988 ps_page
= &rx_ring
->ps_page
[i
];
1989 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1990 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1991 if (!ps_page
->ps_page
[j
]) break;
1992 pci_unmap_page(pdev
,
1993 ps_page_dma
->ps_page_dma
[j
],
1994 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1995 ps_page_dma
->ps_page_dma
[j
] = 0;
1996 put_page(ps_page
->ps_page
[j
]);
1997 ps_page
->ps_page
[j
] = NULL
;
2001 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
2002 memset(rx_ring
->buffer_info
, 0, size
);
2003 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
2004 memset(rx_ring
->ps_page
, 0, size
);
2005 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
2006 memset(rx_ring
->ps_page_dma
, 0, size
);
2008 /* Zero out the descriptor ring */
2010 memset(rx_ring
->desc
, 0, rx_ring
->size
);
2012 rx_ring
->next_to_clean
= 0;
2013 rx_ring
->next_to_use
= 0;
2015 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
2016 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
2020 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2021 * @adapter: board private structure
2025 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2029 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2030 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2033 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2034 * and memory write and invalidate disabled for certain operations
2037 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2039 struct net_device
*netdev
= adapter
->netdev
;
2042 e1000_pci_clear_mwi(&adapter
->hw
);
2044 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2045 rctl
|= E1000_RCTL_RST
;
2046 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2047 E1000_WRITE_FLUSH(&adapter
->hw
);
2050 if (netif_running(netdev
))
2051 e1000_clean_all_rx_rings(adapter
);
2055 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2057 struct net_device
*netdev
= adapter
->netdev
;
2060 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2061 rctl
&= ~E1000_RCTL_RST
;
2062 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2063 E1000_WRITE_FLUSH(&adapter
->hw
);
2066 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2067 e1000_pci_set_mwi(&adapter
->hw
);
2069 if (netif_running(netdev
)) {
2070 /* No need to loop, because 82542 supports only 1 queue */
2071 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2072 e1000_configure_rx(adapter
);
2073 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2078 * e1000_set_mac - Change the Ethernet Address of the NIC
2079 * @netdev: network interface device structure
2080 * @p: pointer to an address structure
2082 * Returns 0 on success, negative on failure
2086 e1000_set_mac(struct net_device
*netdev
, void *p
)
2088 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2089 struct sockaddr
*addr
= p
;
2091 if (!is_valid_ether_addr(addr
->sa_data
))
2092 return -EADDRNOTAVAIL
;
2094 /* 82542 2.0 needs to be in reset to write receive address registers */
2096 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2097 e1000_enter_82542_rst(adapter
);
2099 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2100 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2102 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2104 /* With 82571 controllers, LAA may be overwritten (with the default)
2105 * due to controller reset from the other port. */
2106 if (adapter
->hw
.mac_type
== e1000_82571
) {
2107 /* activate the work around */
2108 adapter
->hw
.laa_is_present
= 1;
2110 /* Hold a copy of the LAA in RAR[14] This is done so that
2111 * between the time RAR[0] gets clobbered and the time it
2112 * gets fixed (in e1000_watchdog), the actual LAA is in one
2113 * of the RARs and no incoming packets directed to this port
2114 * are dropped. Eventaully the LAA will be in RAR[0] and
2116 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2117 E1000_RAR_ENTRIES
- 1);
2120 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2121 e1000_leave_82542_rst(adapter
);
2127 * e1000_set_multi - Multicast and Promiscuous mode set
2128 * @netdev: network interface device structure
2130 * The set_multi entry point is called whenever the multicast address
2131 * list or the network interface flags are updated. This routine is
2132 * responsible for configuring the hardware for proper multicast,
2133 * promiscuous mode, and all-multi behavior.
2137 e1000_set_multi(struct net_device
*netdev
)
2139 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2140 struct e1000_hw
*hw
= &adapter
->hw
;
2141 struct dev_mc_list
*mc_ptr
;
2143 uint32_t hash_value
;
2144 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2146 /* reserve RAR[14] for LAA over-write work-around */
2147 if (adapter
->hw
.mac_type
== e1000_82571
)
2150 /* Check for Promiscuous and All Multicast modes */
2152 rctl
= E1000_READ_REG(hw
, RCTL
);
2154 if (netdev
->flags
& IFF_PROMISC
) {
2155 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2156 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2157 rctl
|= E1000_RCTL_MPE
;
2158 rctl
&= ~E1000_RCTL_UPE
;
2160 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2163 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2165 /* 82542 2.0 needs to be in reset to write receive address registers */
2167 if (hw
->mac_type
== e1000_82542_rev2_0
)
2168 e1000_enter_82542_rst(adapter
);
2170 /* load the first 14 multicast address into the exact filters 1-14
2171 * RAR 0 is used for the station MAC adddress
2172 * if there are not 14 addresses, go ahead and clear the filters
2173 * -- with 82571 controllers only 0-13 entries are filled here
2175 mc_ptr
= netdev
->mc_list
;
2177 for (i
= 1; i
< rar_entries
; i
++) {
2179 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2180 mc_ptr
= mc_ptr
->next
;
2182 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2183 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2187 /* clear the old settings from the multicast hash table */
2189 for (i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2190 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2192 /* load any remaining addresses into the hash table */
2194 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2195 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2196 e1000_mta_set(hw
, hash_value
);
2199 if (hw
->mac_type
== e1000_82542_rev2_0
)
2200 e1000_leave_82542_rst(adapter
);
2203 /* Need to wait a few seconds after link up to get diagnostic information from
2207 e1000_update_phy_info(unsigned long data
)
2209 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2210 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2214 * e1000_82547_tx_fifo_stall - Timer Call-back
2215 * @data: pointer to adapter cast into an unsigned long
2219 e1000_82547_tx_fifo_stall(unsigned long data
)
2221 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2222 struct net_device
*netdev
= adapter
->netdev
;
2225 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2226 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2227 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2228 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2229 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2230 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2231 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2232 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2233 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2234 tctl
& ~E1000_TCTL_EN
);
2235 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2236 adapter
->tx_head_addr
);
2237 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2238 adapter
->tx_head_addr
);
2239 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2240 adapter
->tx_head_addr
);
2241 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2242 adapter
->tx_head_addr
);
2243 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2244 E1000_WRITE_FLUSH(&adapter
->hw
);
2246 adapter
->tx_fifo_head
= 0;
2247 atomic_set(&adapter
->tx_fifo_stall
, 0);
2248 netif_wake_queue(netdev
);
2250 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2256 * e1000_watchdog - Timer Call-back
2257 * @data: pointer to adapter cast into an unsigned long
2260 e1000_watchdog(unsigned long data
)
2262 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2264 /* Do the rest outside of interrupt context */
2265 schedule_work(&adapter
->watchdog_task
);
2269 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2271 struct net_device
*netdev
= adapter
->netdev
;
2272 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2273 uint32_t link
, tctl
;
2275 e1000_check_for_link(&adapter
->hw
);
2276 if (adapter
->hw
.mac_type
== e1000_82573
) {
2277 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2278 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2279 e1000_update_mng_vlan(adapter
);
2282 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2283 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2284 link
= !adapter
->hw
.serdes_link_down
;
2286 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2289 if (!netif_carrier_ok(netdev
)) {
2290 e1000_get_speed_and_duplex(&adapter
->hw
,
2291 &adapter
->link_speed
,
2292 &adapter
->link_duplex
);
2294 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2295 adapter
->link_speed
,
2296 adapter
->link_duplex
== FULL_DUPLEX
?
2297 "Full Duplex" : "Half Duplex");
2299 /* tweak tx_queue_len according to speed/duplex
2300 * and adjust the timeout factor */
2301 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2302 adapter
->tx_timeout_factor
= 1;
2304 switch (adapter
->link_speed
) {
2307 netdev
->tx_queue_len
= 10;
2308 adapter
->tx_timeout_factor
= 8;
2312 netdev
->tx_queue_len
= 100;
2313 /* maybe add some timeout factor ? */
2317 if ((adapter
->hw
.mac_type
== e1000_82571
||
2318 adapter
->hw
.mac_type
== e1000_82572
) &&
2319 adapter
->txb2b
== 0) {
2320 #define SPEED_MODE_BIT (1 << 21)
2322 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2323 tarc0
&= ~SPEED_MODE_BIT
;
2324 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2328 /* disable TSO for pcie and 10/100 speeds, to avoid
2329 * some hardware issues */
2330 if (!adapter
->tso_force
&&
2331 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2332 switch (adapter
->link_speed
) {
2336 "10/100 speed: disabling TSO\n");
2337 netdev
->features
&= ~NETIF_F_TSO
;
2340 netdev
->features
|= NETIF_F_TSO
;
2349 /* enable transmits in the hardware, need to do this
2350 * after setting TARC0 */
2351 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2352 tctl
|= E1000_TCTL_EN
;
2353 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2355 netif_carrier_on(netdev
);
2356 netif_wake_queue(netdev
);
2357 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2358 adapter
->smartspeed
= 0;
2361 if (netif_carrier_ok(netdev
)) {
2362 adapter
->link_speed
= 0;
2363 adapter
->link_duplex
= 0;
2364 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2365 netif_carrier_off(netdev
);
2366 netif_stop_queue(netdev
);
2367 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2369 /* 80003ES2LAN workaround--
2370 * For packet buffer work-around on link down event;
2371 * disable receives in the ISR and
2372 * reset device here in the watchdog
2374 if (adapter
->hw
.mac_type
== e1000_80003es2lan
) {
2376 schedule_work(&adapter
->reset_task
);
2380 e1000_smartspeed(adapter
);
2383 e1000_update_stats(adapter
);
2385 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2386 adapter
->tpt_old
= adapter
->stats
.tpt
;
2387 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2388 adapter
->colc_old
= adapter
->stats
.colc
;
2390 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2391 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2392 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2393 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2395 e1000_update_adaptive(&adapter
->hw
);
2397 if (!netif_carrier_ok(netdev
)) {
2398 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2399 /* We've lost link, so the controller stops DMA,
2400 * but we've got queued Tx work that's never going
2401 * to get done, so reset controller to flush Tx.
2402 * (Do the reset outside of interrupt context). */
2403 adapter
->tx_timeout_count
++;
2404 schedule_work(&adapter
->reset_task
);
2408 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2409 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2410 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2411 * asymmetrical Tx or Rx gets ITR=8000; everyone
2412 * else is between 2000-8000. */
2413 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2414 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2415 adapter
->gotcl
- adapter
->gorcl
:
2416 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2417 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2418 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2421 /* Cause software interrupt to ensure rx ring is cleaned */
2422 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2424 /* Force detection of hung controller every watchdog period */
2425 adapter
->detect_tx_hung
= TRUE
;
2427 /* With 82571 controllers, LAA may be overwritten due to controller
2428 * reset from the other port. Set the appropriate LAA in RAR[0] */
2429 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2430 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2432 /* Reset the timer */
2433 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2436 #define E1000_TX_FLAGS_CSUM 0x00000001
2437 #define E1000_TX_FLAGS_VLAN 0x00000002
2438 #define E1000_TX_FLAGS_TSO 0x00000004
2439 #define E1000_TX_FLAGS_IPV4 0x00000008
2440 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2441 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2444 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2445 struct sk_buff
*skb
)
2448 struct e1000_context_desc
*context_desc
;
2449 struct e1000_buffer
*buffer_info
;
2451 uint32_t cmd_length
= 0;
2452 uint16_t ipcse
= 0, tucse
, mss
;
2453 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2456 if (skb_shinfo(skb
)->tso_size
) {
2457 if (skb_header_cloned(skb
)) {
2458 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2463 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2464 mss
= skb_shinfo(skb
)->tso_size
;
2465 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
2466 skb
->nh
.iph
->tot_len
= 0;
2467 skb
->nh
.iph
->check
= 0;
2469 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2474 cmd_length
= E1000_TXD_CMD_IP
;
2475 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2476 #ifdef NETIF_F_TSO_IPV6
2477 } else if (skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2478 skb
->nh
.ipv6h
->payload_len
= 0;
2480 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2481 &skb
->nh
.ipv6h
->daddr
,
2488 ipcss
= skb
->nh
.raw
- skb
->data
;
2489 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2490 tucss
= skb
->h
.raw
- skb
->data
;
2491 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2494 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2495 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2497 i
= tx_ring
->next_to_use
;
2498 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2499 buffer_info
= &tx_ring
->buffer_info
[i
];
2501 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2502 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2503 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2504 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2505 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2506 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2507 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2508 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2509 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2511 buffer_info
->time_stamp
= jiffies
;
2513 if (++i
== tx_ring
->count
) i
= 0;
2514 tx_ring
->next_to_use
= i
;
2523 static inline boolean_t
2524 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2525 struct sk_buff
*skb
)
2527 struct e1000_context_desc
*context_desc
;
2528 struct e1000_buffer
*buffer_info
;
2532 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2533 css
= skb
->h
.raw
- skb
->data
;
2535 i
= tx_ring
->next_to_use
;
2536 buffer_info
= &tx_ring
->buffer_info
[i
];
2537 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2539 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2540 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2541 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2542 context_desc
->tcp_seg_setup
.data
= 0;
2543 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2545 buffer_info
->time_stamp
= jiffies
;
2547 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2548 tx_ring
->next_to_use
= i
;
2556 #define E1000_MAX_TXD_PWR 12
2557 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2560 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2561 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2562 unsigned int nr_frags
, unsigned int mss
)
2564 struct e1000_buffer
*buffer_info
;
2565 unsigned int len
= skb
->len
;
2566 unsigned int offset
= 0, size
, count
= 0, i
;
2568 len
-= skb
->data_len
;
2570 i
= tx_ring
->next_to_use
;
2573 buffer_info
= &tx_ring
->buffer_info
[i
];
2574 size
= min(len
, max_per_txd
);
2576 /* Workaround for Controller erratum --
2577 * descriptor for non-tso packet in a linear SKB that follows a
2578 * tso gets written back prematurely before the data is fully
2579 * DMAd to the controller */
2580 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2581 !skb_shinfo(skb
)->tso_size
) {
2582 tx_ring
->last_tx_tso
= 0;
2586 /* Workaround for premature desc write-backs
2587 * in TSO mode. Append 4-byte sentinel desc */
2588 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2591 /* work-around for errata 10 and it applies
2592 * to all controllers in PCI-X mode
2593 * The fix is to make sure that the first descriptor of a
2594 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2596 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2597 (size
> 2015) && count
== 0))
2600 /* Workaround for potential 82544 hang in PCI-X. Avoid
2601 * terminating buffers within evenly-aligned dwords. */
2602 if (unlikely(adapter
->pcix_82544
&&
2603 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2607 buffer_info
->length
= size
;
2609 pci_map_single(adapter
->pdev
,
2613 buffer_info
->time_stamp
= jiffies
;
2618 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2621 for (f
= 0; f
< nr_frags
; f
++) {
2622 struct skb_frag_struct
*frag
;
2624 frag
= &skb_shinfo(skb
)->frags
[f
];
2626 offset
= frag
->page_offset
;
2629 buffer_info
= &tx_ring
->buffer_info
[i
];
2630 size
= min(len
, max_per_txd
);
2632 /* Workaround for premature desc write-backs
2633 * in TSO mode. Append 4-byte sentinel desc */
2634 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2637 /* Workaround for potential 82544 hang in PCI-X.
2638 * Avoid terminating buffers within evenly-aligned
2640 if (unlikely(adapter
->pcix_82544
&&
2641 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2645 buffer_info
->length
= size
;
2647 pci_map_page(adapter
->pdev
,
2652 buffer_info
->time_stamp
= jiffies
;
2657 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2661 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2662 tx_ring
->buffer_info
[i
].skb
= skb
;
2663 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2669 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2670 int tx_flags
, int count
)
2672 struct e1000_tx_desc
*tx_desc
= NULL
;
2673 struct e1000_buffer
*buffer_info
;
2674 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2677 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2678 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2680 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2682 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2683 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2686 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2687 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2688 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2691 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2692 txd_lower
|= E1000_TXD_CMD_VLE
;
2693 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2696 i
= tx_ring
->next_to_use
;
2699 buffer_info
= &tx_ring
->buffer_info
[i
];
2700 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2701 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2702 tx_desc
->lower
.data
=
2703 cpu_to_le32(txd_lower
| buffer_info
->length
);
2704 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2705 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2708 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2710 /* Force memory writes to complete before letting h/w
2711 * know there are new descriptors to fetch. (Only
2712 * applicable for weak-ordered memory model archs,
2713 * such as IA-64). */
2716 tx_ring
->next_to_use
= i
;
2717 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2721 * 82547 workaround to avoid controller hang in half-duplex environment.
2722 * The workaround is to avoid queuing a large packet that would span
2723 * the internal Tx FIFO ring boundary by notifying the stack to resend
2724 * the packet at a later time. This gives the Tx FIFO an opportunity to
2725 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2726 * to the beginning of the Tx FIFO.
2729 #define E1000_FIFO_HDR 0x10
2730 #define E1000_82547_PAD_LEN 0x3E0
2733 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2735 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2736 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2738 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2740 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2741 goto no_fifo_stall_required
;
2743 if (atomic_read(&adapter
->tx_fifo_stall
))
2746 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2747 atomic_set(&adapter
->tx_fifo_stall
, 1);
2751 no_fifo_stall_required
:
2752 adapter
->tx_fifo_head
+= skb_fifo_len
;
2753 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2754 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2758 #define MINIMUM_DHCP_PACKET_SIZE 282
2760 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2762 struct e1000_hw
*hw
= &adapter
->hw
;
2763 uint16_t length
, offset
;
2764 if (vlan_tx_tag_present(skb
)) {
2765 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2766 ( adapter
->hw
.mng_cookie
.status
&
2767 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2770 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2771 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2772 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2773 const struct iphdr
*ip
=
2774 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2775 if (IPPROTO_UDP
== ip
->protocol
) {
2776 struct udphdr
*udp
=
2777 (struct udphdr
*)((uint8_t *)ip
+
2779 if (ntohs(udp
->dest
) == 67) {
2780 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2781 length
= skb
->len
- offset
;
2783 return e1000_mng_write_dhcp_info(hw
,
2793 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2795 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2797 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2798 struct e1000_tx_ring
*tx_ring
;
2799 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2800 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2801 unsigned int tx_flags
= 0;
2802 unsigned int len
= skb
->len
;
2803 unsigned long flags
;
2804 unsigned int nr_frags
= 0;
2805 unsigned int mss
= 0;
2809 len
-= skb
->data_len
;
2811 tx_ring
= adapter
->tx_ring
;
2813 if (unlikely(skb
->len
<= 0)) {
2814 dev_kfree_skb_any(skb
);
2815 return NETDEV_TX_OK
;
2819 mss
= skb_shinfo(skb
)->tso_size
;
2820 /* The controller does a simple calculation to
2821 * make sure there is enough room in the FIFO before
2822 * initiating the DMA for each buffer. The calc is:
2823 * 4 = ceil(buffer len/mss). To make sure we don't
2824 * overrun the FIFO, adjust the max buffer len if mss
2828 max_per_txd
= min(mss
<< 2, max_per_txd
);
2829 max_txd_pwr
= fls(max_per_txd
) - 1;
2831 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2832 * points to just header, pull a few bytes of payload from
2833 * frags into skb->data */
2834 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2835 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2836 switch (adapter
->hw
.mac_type
) {
2837 unsigned int pull_size
;
2841 pull_size
= min((unsigned int)4, skb
->data_len
);
2842 if (!__pskb_pull_tail(skb
, pull_size
)) {
2844 "__pskb_pull_tail failed.\n");
2845 dev_kfree_skb_any(skb
);
2848 len
= skb
->len
- skb
->data_len
;
2857 /* reserve a descriptor for the offload context */
2858 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2862 if (skb
->ip_summed
== CHECKSUM_HW
)
2867 /* Controller Erratum workaround */
2868 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2869 !skb_shinfo(skb
)->tso_size
)
2873 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2875 if (adapter
->pcix_82544
)
2878 /* work-around for errata 10 and it applies to all controllers
2879 * in PCI-X mode, so add one more descriptor to the count
2881 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2885 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2886 for (f
= 0; f
< nr_frags
; f
++)
2887 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2889 if (adapter
->pcix_82544
)
2892 if (adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2893 e1000_transfer_dhcp_info(adapter
, skb
);
2895 local_irq_save(flags
);
2896 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2897 /* Collision - tell upper layer to requeue */
2898 local_irq_restore(flags
);
2899 return NETDEV_TX_LOCKED
;
2902 /* need: count + 2 desc gap to keep tail from touching
2903 * head, otherwise try next time */
2904 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2905 netif_stop_queue(netdev
);
2906 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2907 return NETDEV_TX_BUSY
;
2910 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2911 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2912 netif_stop_queue(netdev
);
2913 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2914 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2915 return NETDEV_TX_BUSY
;
2919 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2920 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2921 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2924 first
= tx_ring
->next_to_use
;
2926 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2928 dev_kfree_skb_any(skb
);
2929 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2930 return NETDEV_TX_OK
;
2934 tx_ring
->last_tx_tso
= 1;
2935 tx_flags
|= E1000_TX_FLAGS_TSO
;
2936 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2937 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2939 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2940 * 82571 hardware supports TSO capabilities for IPv6 as well...
2941 * no longer assume, we must. */
2942 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2943 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2945 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2946 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2947 max_per_txd
, nr_frags
, mss
));
2949 netdev
->trans_start
= jiffies
;
2951 /* Make sure there is space in the ring for the next send. */
2952 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2953 netif_stop_queue(netdev
);
2955 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2956 return NETDEV_TX_OK
;
2960 * e1000_tx_timeout - Respond to a Tx Hang
2961 * @netdev: network interface device structure
2965 e1000_tx_timeout(struct net_device
*netdev
)
2967 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2969 /* Do the reset outside of interrupt context */
2970 adapter
->tx_timeout_count
++;
2971 schedule_work(&adapter
->reset_task
);
2975 e1000_reset_task(struct net_device
*netdev
)
2977 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2979 e1000_down(adapter
);
2984 * e1000_get_stats - Get System Network Statistics
2985 * @netdev: network interface device structure
2987 * Returns the address of the device statistics structure.
2988 * The statistics are actually updated from the timer callback.
2991 static struct net_device_stats
*
2992 e1000_get_stats(struct net_device
*netdev
)
2994 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2996 /* only return the current stats */
2997 return &adapter
->net_stats
;
3001 * e1000_change_mtu - Change the Maximum Transfer Unit
3002 * @netdev: network interface device structure
3003 * @new_mtu: new value for maximum frame size
3005 * Returns 0 on success, negative on failure
3009 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
3011 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3012 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
3013 uint16_t eeprom_data
= 0;
3015 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
3016 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
3017 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
3021 /* Adapter-specific max frame size limits. */
3022 switch (adapter
->hw
.mac_type
) {
3023 case e1000_82542_rev2_0
:
3024 case e1000_82542_rev2_1
:
3025 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3026 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3031 /* only enable jumbo frames if ASPM is disabled completely
3032 * this means both bits must be zero in 0x1A bits 3:2 */
3033 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3035 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
3036 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3038 "Jumbo Frames not supported.\n");
3043 /* fall through to get support */
3046 case e1000_80003es2lan
:
3047 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3048 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3049 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3054 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3059 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3060 adapter
->rx_buffer_len
= max_frame
;
3061 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
3063 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
3064 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
3065 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
3069 if(max_frame
<= E1000_RXBUFFER_2048
)
3070 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3071 else if(max_frame
<= E1000_RXBUFFER_4096
)
3072 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3073 else if(max_frame
<= E1000_RXBUFFER_8192
)
3074 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3075 else if(max_frame
<= E1000_RXBUFFER_16384
)
3076 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3080 netdev
->mtu
= new_mtu
;
3082 if (netif_running(netdev
)) {
3083 e1000_down(adapter
);
3087 adapter
->hw
.max_frame_size
= max_frame
;
3093 * e1000_update_stats - Update the board statistics counters
3094 * @adapter: board private structure
3098 e1000_update_stats(struct e1000_adapter
*adapter
)
3100 struct e1000_hw
*hw
= &adapter
->hw
;
3101 unsigned long flags
;
3104 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3106 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3108 /* these counters are modified from e1000_adjust_tbi_stats,
3109 * called from the interrupt context, so they must only
3110 * be written while holding adapter->stats_lock
3113 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3114 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3115 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3116 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3117 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3118 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3119 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3120 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3121 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3122 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3123 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3124 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3125 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3127 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3128 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3129 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3130 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3131 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3132 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3133 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3134 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3135 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3136 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3137 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3138 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3139 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3140 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3141 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3142 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3143 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3144 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3145 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3146 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3147 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3148 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3149 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3150 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3151 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3152 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3153 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3154 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3155 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3156 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3157 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3158 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3159 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3160 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3162 /* used for adaptive IFS */
3164 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3165 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3166 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3167 adapter
->stats
.colc
+= hw
->collision_delta
;
3169 if (hw
->mac_type
>= e1000_82543
) {
3170 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3171 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3172 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3173 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3174 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3175 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3177 if (hw
->mac_type
> e1000_82547_rev_2
) {
3178 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3179 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3180 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3181 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3182 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3183 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3184 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3185 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3186 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3189 /* Fill out the OS statistics structure */
3191 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3192 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3193 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3194 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3195 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3196 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3200 /* RLEC on some newer hardware can be incorrect so build
3201 * our own version based on RUC and ROC */
3202 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3203 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3204 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3205 adapter
->stats
.cexterr
;
3206 adapter
->net_stats
.rx_dropped
= 0;
3207 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3209 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3210 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3211 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3215 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3216 adapter
->stats
.latecol
;
3217 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3218 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3219 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3221 /* Tx Dropped needs to be maintained elsewhere */
3225 if (hw
->media_type
== e1000_media_type_copper
) {
3226 if ((adapter
->link_speed
== SPEED_1000
) &&
3227 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3228 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3229 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3232 if ((hw
->mac_type
<= e1000_82546
) &&
3233 (hw
->phy_type
== e1000_phy_m88
) &&
3234 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3235 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3238 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3242 * e1000_intr - Interrupt Handler
3243 * @irq: interrupt number
3244 * @data: pointer to a network interface device structure
3245 * @pt_regs: CPU registers structure
3249 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3251 struct net_device
*netdev
= data
;
3252 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3253 struct e1000_hw
*hw
= &adapter
->hw
;
3254 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3255 #ifndef CONFIG_E1000_NAPI
3258 /* Interrupt Auto-Mask...upon reading ICR,
3259 * interrupts are masked. No need for the
3260 * IMC write, but it does mean we should
3261 * account for it ASAP. */
3262 if (likely(hw
->mac_type
>= e1000_82571
))
3263 atomic_inc(&adapter
->irq_sem
);
3266 if (unlikely(!icr
)) {
3267 #ifdef CONFIG_E1000_NAPI
3268 if (hw
->mac_type
>= e1000_82571
)
3269 e1000_irq_enable(adapter
);
3271 return IRQ_NONE
; /* Not our interrupt */
3274 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3275 hw
->get_link_status
= 1;
3276 /* 80003ES2LAN workaround--
3277 * For packet buffer work-around on link down event;
3278 * disable receives here in the ISR and
3279 * reset adapter in watchdog
3281 if (netif_carrier_ok(netdev
) &&
3282 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3283 /* disable receives */
3284 rctl
= E1000_READ_REG(hw
, RCTL
);
3285 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3287 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3290 #ifdef CONFIG_E1000_NAPI
3291 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3292 atomic_inc(&adapter
->irq_sem
);
3293 E1000_WRITE_REG(hw
, IMC
, ~0);
3294 E1000_WRITE_FLUSH(hw
);
3296 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3297 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3299 e1000_irq_enable(adapter
);
3301 /* Writing IMC and IMS is needed for 82547.
3302 * Due to Hub Link bus being occupied, an interrupt
3303 * de-assertion message is not able to be sent.
3304 * When an interrupt assertion message is generated later,
3305 * two messages are re-ordered and sent out.
3306 * That causes APIC to think 82547 is in de-assertion
3307 * state, while 82547 is in assertion state, resulting
3308 * in dead lock. Writing IMC forces 82547 into
3309 * de-assertion state.
3311 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3312 atomic_inc(&adapter
->irq_sem
);
3313 E1000_WRITE_REG(hw
, IMC
, ~0);
3316 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3317 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3318 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3321 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3322 e1000_irq_enable(adapter
);
3329 #ifdef CONFIG_E1000_NAPI
3331 * e1000_clean - NAPI Rx polling callback
3332 * @adapter: board private structure
3336 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3338 struct e1000_adapter
*adapter
;
3339 int work_to_do
= min(*budget
, poll_dev
->quota
);
3340 int tx_cleaned
= 0, i
= 0, work_done
= 0;
3342 /* Must NOT use netdev_priv macro here. */
3343 adapter
= poll_dev
->priv
;
3345 /* Keep link state information with original netdev */
3346 if (!netif_carrier_ok(adapter
->netdev
))
3349 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3351 if (unlikely(i
== adapter
->num_rx_queues
))
3355 if (likely(adapter
->num_tx_queues
== 1)) {
3356 /* e1000_clean is called per-cpu. This lock protects
3357 * tx_ring[0] from being cleaned by multiple cpus
3358 * simultaneously. A failure obtaining the lock means
3359 * tx_ring[0] is currently being cleaned anyway. */
3360 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3361 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3362 &adapter
->tx_ring
[0]);
3363 spin_unlock(&adapter
->tx_queue_lock
);
3366 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3368 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3369 &work_done
, work_to_do
);
3371 *budget
-= work_done
;
3372 poll_dev
->quota
-= work_done
;
3374 /* If no Tx and not enough Rx work done, exit the polling mode */
3375 if ((!tx_cleaned
&& (work_done
== 0)) ||
3376 !netif_running(adapter
->netdev
)) {
3378 netif_rx_complete(poll_dev
);
3379 e1000_irq_enable(adapter
);
3388 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3389 * @adapter: board private structure
3393 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3394 struct e1000_tx_ring
*tx_ring
)
3396 struct net_device
*netdev
= adapter
->netdev
;
3397 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3398 struct e1000_buffer
*buffer_info
;
3399 unsigned int i
, eop
;
3400 #ifdef CONFIG_E1000_NAPI
3401 unsigned int count
= 0;
3403 boolean_t cleaned
= FALSE
;
3405 i
= tx_ring
->next_to_clean
;
3406 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3407 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3409 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3410 for (cleaned
= FALSE
; !cleaned
; ) {
3411 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3412 buffer_info
= &tx_ring
->buffer_info
[i
];
3413 cleaned
= (i
== eop
);
3415 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3416 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3418 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3422 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3423 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3424 #ifdef CONFIG_E1000_NAPI
3425 #define E1000_TX_WEIGHT 64
3426 /* weight of a sort for tx, to avoid endless transmit cleanup */
3427 if (count
++ == E1000_TX_WEIGHT
) break;
3431 tx_ring
->next_to_clean
= i
;
3433 spin_lock(&tx_ring
->tx_lock
);
3435 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3436 netif_carrier_ok(netdev
)))
3437 netif_wake_queue(netdev
);
3439 spin_unlock(&tx_ring
->tx_lock
);
3441 if (adapter
->detect_tx_hung
) {
3442 /* Detect a transmit hang in hardware, this serializes the
3443 * check with the clearing of time_stamp and movement of i */
3444 adapter
->detect_tx_hung
= FALSE
;
3445 if (tx_ring
->buffer_info
[eop
].dma
&&
3446 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3447 (adapter
->tx_timeout_factor
* HZ
))
3448 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3449 E1000_STATUS_TXOFF
)) {
3451 /* detected Tx unit hang */
3452 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3456 " next_to_use <%x>\n"
3457 " next_to_clean <%x>\n"
3458 "buffer_info[next_to_clean]\n"
3459 " time_stamp <%lx>\n"
3460 " next_to_watch <%x>\n"
3462 " next_to_watch.status <%x>\n",
3463 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3464 sizeof(struct e1000_tx_ring
)),
3465 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3466 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3467 tx_ring
->next_to_use
,
3468 tx_ring
->next_to_clean
,
3469 tx_ring
->buffer_info
[eop
].time_stamp
,
3472 eop_desc
->upper
.fields
.status
);
3473 netif_stop_queue(netdev
);
3480 * e1000_rx_checksum - Receive Checksum Offload for 82543
3481 * @adapter: board private structure
3482 * @status_err: receive descriptor status and error fields
3483 * @csum: receive descriptor csum field
3484 * @sk_buff: socket buffer with received data
3488 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3489 uint32_t status_err
, uint32_t csum
,
3490 struct sk_buff
*skb
)
3492 uint16_t status
= (uint16_t)status_err
;
3493 uint8_t errors
= (uint8_t)(status_err
>> 24);
3494 skb
->ip_summed
= CHECKSUM_NONE
;
3496 /* 82543 or newer only */
3497 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3498 /* Ignore Checksum bit is set */
3499 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3500 /* TCP/UDP checksum error bit is set */
3501 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3502 /* let the stack verify checksum errors */
3503 adapter
->hw_csum_err
++;
3506 /* TCP/UDP Checksum has not been calculated */
3507 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3508 if (!(status
& E1000_RXD_STAT_TCPCS
))
3511 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3514 /* It must be a TCP or UDP packet with a valid checksum */
3515 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3516 /* TCP checksum is good */
3517 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3518 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3519 /* IP fragment with UDP payload */
3520 /* Hardware complements the payload checksum, so we undo it
3521 * and then put the value in host order for further stack use.
3523 csum
= ntohl(csum
^ 0xFFFF);
3525 skb
->ip_summed
= CHECKSUM_HW
;
3527 adapter
->hw_csum_good
++;
3531 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3532 * @adapter: board private structure
3536 #ifdef CONFIG_E1000_NAPI
3537 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3538 struct e1000_rx_ring
*rx_ring
,
3539 int *work_done
, int work_to_do
)
3541 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3542 struct e1000_rx_ring
*rx_ring
)
3545 struct net_device
*netdev
= adapter
->netdev
;
3546 struct pci_dev
*pdev
= adapter
->pdev
;
3547 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3548 struct e1000_buffer
*buffer_info
, *next_buffer
;
3549 unsigned long flags
;
3553 int cleaned_count
= 0;
3554 boolean_t cleaned
= FALSE
;
3556 i
= rx_ring
->next_to_clean
;
3557 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3558 buffer_info
= &rx_ring
->buffer_info
[i
];
3560 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3561 struct sk_buff
*skb
, *next_skb
;
3563 #ifdef CONFIG_E1000_NAPI
3564 if (*work_done
>= work_to_do
)
3568 status
= rx_desc
->status
;
3569 skb
= buffer_info
->skb
;
3570 buffer_info
->skb
= NULL
;
3572 if (++i
== rx_ring
->count
) i
= 0;
3573 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3574 next_buffer
= &rx_ring
->buffer_info
[i
];
3575 next_skb
= next_buffer
->skb
;
3579 pci_unmap_single(pdev
,
3581 buffer_info
->length
,
3582 PCI_DMA_FROMDEVICE
);
3584 length
= le16_to_cpu(rx_desc
->length
);
3586 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3587 /* All receives must fit into a single buffer */
3588 E1000_DBG("%s: Receive packet consumed multiple"
3589 " buffers\n", netdev
->name
);
3590 dev_kfree_skb_irq(skb
);
3594 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3595 last_byte
= *(skb
->data
+ length
- 1);
3596 if (TBI_ACCEPT(&adapter
->hw
, status
,
3597 rx_desc
->errors
, length
, last_byte
)) {
3598 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3599 e1000_tbi_adjust_stats(&adapter
->hw
,
3602 spin_unlock_irqrestore(&adapter
->stats_lock
,
3606 dev_kfree_skb_irq(skb
);
3611 /* code added for copybreak, this should improve
3612 * performance for small packets with large amounts
3613 * of reassembly being done in the stack */
3614 #define E1000_CB_LENGTH 256
3615 if (length
< E1000_CB_LENGTH
) {
3616 struct sk_buff
*new_skb
=
3617 dev_alloc_skb(length
+ NET_IP_ALIGN
);
3619 skb_reserve(new_skb
, NET_IP_ALIGN
);
3620 new_skb
->dev
= netdev
;
3621 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3622 skb
->data
- NET_IP_ALIGN
,
3623 length
+ NET_IP_ALIGN
);
3624 /* save the skb in buffer_info as good */
3625 buffer_info
->skb
= skb
;
3627 skb_put(skb
, length
);
3630 skb_put(skb
, length
);
3632 /* end copybreak code */
3634 /* Receive Checksum Offload */
3635 e1000_rx_checksum(adapter
,
3636 (uint32_t)(status
) |
3637 ((uint32_t)(rx_desc
->errors
) << 24),
3638 rx_desc
->csum
, skb
);
3640 skb
->protocol
= eth_type_trans(skb
, netdev
);
3641 #ifdef CONFIG_E1000_NAPI
3642 if (unlikely(adapter
->vlgrp
&&
3643 (status
& E1000_RXD_STAT_VP
))) {
3644 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3645 le16_to_cpu(rx_desc
->special
) &
3646 E1000_RXD_SPC_VLAN_MASK
);
3648 netif_receive_skb(skb
);
3650 #else /* CONFIG_E1000_NAPI */
3651 if (unlikely(adapter
->vlgrp
&&
3652 (status
& E1000_RXD_STAT_VP
))) {
3653 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3654 le16_to_cpu(rx_desc
->special
) &
3655 E1000_RXD_SPC_VLAN_MASK
);
3659 #endif /* CONFIG_E1000_NAPI */
3660 netdev
->last_rx
= jiffies
;
3663 rx_desc
->status
= 0;
3665 /* return some buffers to hardware, one at a time is too slow */
3666 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3667 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3672 buffer_info
= next_buffer
;
3674 rx_ring
->next_to_clean
= i
;
3676 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3678 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3684 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3685 * @adapter: board private structure
3689 #ifdef CONFIG_E1000_NAPI
3690 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3691 struct e1000_rx_ring
*rx_ring
,
3692 int *work_done
, int work_to_do
)
3694 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3695 struct e1000_rx_ring
*rx_ring
)
3698 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3699 struct net_device
*netdev
= adapter
->netdev
;
3700 struct pci_dev
*pdev
= adapter
->pdev
;
3701 struct e1000_buffer
*buffer_info
, *next_buffer
;
3702 struct e1000_ps_page
*ps_page
;
3703 struct e1000_ps_page_dma
*ps_page_dma
;
3704 struct sk_buff
*skb
, *next_skb
;
3706 uint32_t length
, staterr
;
3707 int cleaned_count
= 0;
3708 boolean_t cleaned
= FALSE
;
3710 i
= rx_ring
->next_to_clean
;
3711 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3712 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3713 buffer_info
= &rx_ring
->buffer_info
[i
];
3715 while (staterr
& E1000_RXD_STAT_DD
) {
3716 ps_page
= &rx_ring
->ps_page
[i
];
3717 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3718 #ifdef CONFIG_E1000_NAPI
3719 if (unlikely(*work_done
>= work_to_do
))
3723 skb
= buffer_info
->skb
;
3725 if (++i
== rx_ring
->count
) i
= 0;
3726 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3727 next_buffer
= &rx_ring
->buffer_info
[i
];
3728 next_skb
= next_buffer
->skb
;
3732 pci_unmap_single(pdev
, buffer_info
->dma
,
3733 buffer_info
->length
,
3734 PCI_DMA_FROMDEVICE
);
3736 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3737 E1000_DBG("%s: Packet Split buffers didn't pick up"
3738 " the full packet\n", netdev
->name
);
3739 dev_kfree_skb_irq(skb
);
3743 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3744 dev_kfree_skb_irq(skb
);
3748 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3750 if (unlikely(!length
)) {
3751 E1000_DBG("%s: Last part of the packet spanning"
3752 " multiple descriptors\n", netdev
->name
);
3753 dev_kfree_skb_irq(skb
);
3758 skb_put(skb
, length
);
3760 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3761 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3764 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3765 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3766 ps_page_dma
->ps_page_dma
[j
] = 0;
3767 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3769 ps_page
->ps_page
[j
] = NULL
;
3771 skb
->data_len
+= length
;
3774 e1000_rx_checksum(adapter
, staterr
,
3775 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3776 skb
->protocol
= eth_type_trans(skb
, netdev
);
3778 if (likely(rx_desc
->wb
.upper
.header_status
&
3779 E1000_RXDPS_HDRSTAT_HDRSP
))
3780 adapter
->rx_hdr_split
++;
3781 #ifdef CONFIG_E1000_NAPI
3782 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3783 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3784 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3785 E1000_RXD_SPC_VLAN_MASK
);
3787 netif_receive_skb(skb
);
3789 #else /* CONFIG_E1000_NAPI */
3790 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3791 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3792 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3793 E1000_RXD_SPC_VLAN_MASK
);
3797 #endif /* CONFIG_E1000_NAPI */
3798 netdev
->last_rx
= jiffies
;
3801 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3802 buffer_info
->skb
= NULL
;
3804 /* return some buffers to hardware, one at a time is too slow */
3805 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3806 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3811 buffer_info
= next_buffer
;
3813 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3815 rx_ring
->next_to_clean
= i
;
3817 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3819 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3825 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3826 * @adapter: address of board private structure
3830 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3831 struct e1000_rx_ring
*rx_ring
,
3834 struct net_device
*netdev
= adapter
->netdev
;
3835 struct pci_dev
*pdev
= adapter
->pdev
;
3836 struct e1000_rx_desc
*rx_desc
;
3837 struct e1000_buffer
*buffer_info
;
3838 struct sk_buff
*skb
;
3840 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3842 i
= rx_ring
->next_to_use
;
3843 buffer_info
= &rx_ring
->buffer_info
[i
];
3845 while (cleaned_count
--) {
3846 if (!(skb
= buffer_info
->skb
))
3847 skb
= dev_alloc_skb(bufsz
);
3854 if (unlikely(!skb
)) {
3855 /* Better luck next round */
3856 adapter
->alloc_rx_buff_failed
++;
3860 /* Fix for errata 23, can't cross 64kB boundary */
3861 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3862 struct sk_buff
*oldskb
= skb
;
3863 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3864 "at %p\n", bufsz
, skb
->data
);
3865 /* Try again, without freeing the previous */
3866 skb
= dev_alloc_skb(bufsz
);
3867 /* Failed allocation, critical failure */
3869 dev_kfree_skb(oldskb
);
3873 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3876 dev_kfree_skb(oldskb
);
3877 break; /* while !buffer_info->skb */
3879 /* Use new allocation */
3880 dev_kfree_skb(oldskb
);
3883 /* Make buffer alignment 2 beyond a 16 byte boundary
3884 * this will result in a 16 byte aligned IP header after
3885 * the 14 byte MAC header is removed
3887 skb_reserve(skb
, NET_IP_ALIGN
);
3891 buffer_info
->skb
= skb
;
3892 buffer_info
->length
= adapter
->rx_buffer_len
;
3894 buffer_info
->dma
= pci_map_single(pdev
,
3896 adapter
->rx_buffer_len
,
3897 PCI_DMA_FROMDEVICE
);
3899 /* Fix for errata 23, can't cross 64kB boundary */
3900 if (!e1000_check_64k_bound(adapter
,
3901 (void *)(unsigned long)buffer_info
->dma
,
3902 adapter
->rx_buffer_len
)) {
3903 DPRINTK(RX_ERR
, ERR
,
3904 "dma align check failed: %u bytes at %p\n",
3905 adapter
->rx_buffer_len
,
3906 (void *)(unsigned long)buffer_info
->dma
);
3908 buffer_info
->skb
= NULL
;
3910 pci_unmap_single(pdev
, buffer_info
->dma
,
3911 adapter
->rx_buffer_len
,
3912 PCI_DMA_FROMDEVICE
);
3914 break; /* while !buffer_info->skb */
3916 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3917 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3919 if (unlikely(++i
== rx_ring
->count
))
3921 buffer_info
= &rx_ring
->buffer_info
[i
];
3924 if (likely(rx_ring
->next_to_use
!= i
)) {
3925 rx_ring
->next_to_use
= i
;
3926 if (unlikely(i
-- == 0))
3927 i
= (rx_ring
->count
- 1);
3929 /* Force memory writes to complete before letting h/w
3930 * know there are new descriptors to fetch. (Only
3931 * applicable for weak-ordered memory model archs,
3932 * such as IA-64). */
3934 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3939 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3940 * @adapter: address of board private structure
3944 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3945 struct e1000_rx_ring
*rx_ring
,
3948 struct net_device
*netdev
= adapter
->netdev
;
3949 struct pci_dev
*pdev
= adapter
->pdev
;
3950 union e1000_rx_desc_packet_split
*rx_desc
;
3951 struct e1000_buffer
*buffer_info
;
3952 struct e1000_ps_page
*ps_page
;
3953 struct e1000_ps_page_dma
*ps_page_dma
;
3954 struct sk_buff
*skb
;
3957 i
= rx_ring
->next_to_use
;
3958 buffer_info
= &rx_ring
->buffer_info
[i
];
3959 ps_page
= &rx_ring
->ps_page
[i
];
3960 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3962 while (cleaned_count
--) {
3963 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3965 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3966 if (j
< adapter
->rx_ps_pages
) {
3967 if (likely(!ps_page
->ps_page
[j
])) {
3968 ps_page
->ps_page
[j
] =
3969 alloc_page(GFP_ATOMIC
);
3970 if (unlikely(!ps_page
->ps_page
[j
])) {
3971 adapter
->alloc_rx_buff_failed
++;
3974 ps_page_dma
->ps_page_dma
[j
] =
3976 ps_page
->ps_page
[j
],
3978 PCI_DMA_FROMDEVICE
);
3980 /* Refresh the desc even if buffer_addrs didn't
3981 * change because each write-back erases
3984 rx_desc
->read
.buffer_addr
[j
+1] =
3985 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3987 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3990 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3992 if (unlikely(!skb
)) {
3993 adapter
->alloc_rx_buff_failed
++;
3997 /* Make buffer alignment 2 beyond a 16 byte boundary
3998 * this will result in a 16 byte aligned IP header after
3999 * the 14 byte MAC header is removed
4001 skb_reserve(skb
, NET_IP_ALIGN
);
4005 buffer_info
->skb
= skb
;
4006 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4007 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4008 adapter
->rx_ps_bsize0
,
4009 PCI_DMA_FROMDEVICE
);
4011 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4013 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4014 buffer_info
= &rx_ring
->buffer_info
[i
];
4015 ps_page
= &rx_ring
->ps_page
[i
];
4016 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4020 if (likely(rx_ring
->next_to_use
!= i
)) {
4021 rx_ring
->next_to_use
= i
;
4022 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4024 /* Force memory writes to complete before letting h/w
4025 * know there are new descriptors to fetch. (Only
4026 * applicable for weak-ordered memory model archs,
4027 * such as IA-64). */
4029 /* Hardware increments by 16 bytes, but packet split
4030 * descriptors are 32 bytes...so we increment tail
4033 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4038 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4043 e1000_smartspeed(struct e1000_adapter
*adapter
)
4045 uint16_t phy_status
;
4048 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4049 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4052 if (adapter
->smartspeed
== 0) {
4053 /* If Master/Slave config fault is asserted twice,
4054 * we assume back-to-back */
4055 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4056 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4057 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4058 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4059 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4060 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4061 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4062 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4064 adapter
->smartspeed
++;
4065 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4066 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4068 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4069 MII_CR_RESTART_AUTO_NEG
);
4070 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4075 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4076 /* If still no link, perhaps using 2/3 pair cable */
4077 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4078 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4079 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4080 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4081 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4082 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4083 MII_CR_RESTART_AUTO_NEG
);
4084 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4087 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4088 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4089 adapter
->smartspeed
= 0;
4100 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4106 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4120 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4122 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4123 struct mii_ioctl_data
*data
= if_mii(ifr
);
4127 unsigned long flags
;
4129 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4134 data
->phy_id
= adapter
->hw
.phy_addr
;
4137 if (!capable(CAP_NET_ADMIN
))
4139 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4140 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4142 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4145 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4148 if (!capable(CAP_NET_ADMIN
))
4150 if (data
->reg_num
& ~(0x1F))
4152 mii_reg
= data
->val_in
;
4153 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4154 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4156 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4159 if (adapter
->hw
.phy_type
== e1000_phy_m88
) {
4160 switch (data
->reg_num
) {
4162 if (mii_reg
& MII_CR_POWER_DOWN
)
4164 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4165 adapter
->hw
.autoneg
= 1;
4166 adapter
->hw
.autoneg_advertised
= 0x2F;
4169 spddplx
= SPEED_1000
;
4170 else if (mii_reg
& 0x2000)
4171 spddplx
= SPEED_100
;
4174 spddplx
+= (mii_reg
& 0x100)
4177 retval
= e1000_set_spd_dplx(adapter
,
4180 spin_unlock_irqrestore(
4181 &adapter
->stats_lock
,
4186 if (netif_running(adapter
->netdev
)) {
4187 e1000_down(adapter
);
4190 e1000_reset(adapter
);
4192 case M88E1000_PHY_SPEC_CTRL
:
4193 case M88E1000_EXT_PHY_SPEC_CTRL
:
4194 if (e1000_phy_reset(&adapter
->hw
)) {
4195 spin_unlock_irqrestore(
4196 &adapter
->stats_lock
, flags
);
4202 switch (data
->reg_num
) {
4204 if (mii_reg
& MII_CR_POWER_DOWN
)
4206 if (netif_running(adapter
->netdev
)) {
4207 e1000_down(adapter
);
4210 e1000_reset(adapter
);
4214 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4219 return E1000_SUCCESS
;
4223 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4225 struct e1000_adapter
*adapter
= hw
->back
;
4226 int ret_val
= pci_set_mwi(adapter
->pdev
);
4229 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4233 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4235 struct e1000_adapter
*adapter
= hw
->back
;
4237 pci_clear_mwi(adapter
->pdev
);
4241 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4243 struct e1000_adapter
*adapter
= hw
->back
;
4245 pci_read_config_word(adapter
->pdev
, reg
, value
);
4249 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4251 struct e1000_adapter
*adapter
= hw
->back
;
4253 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4257 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4263 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4269 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4271 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4272 uint32_t ctrl
, rctl
;
4274 e1000_irq_disable(adapter
);
4275 adapter
->vlgrp
= grp
;
4278 /* enable VLAN tag insert/strip */
4279 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4280 ctrl
|= E1000_CTRL_VME
;
4281 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4283 /* enable VLAN receive filtering */
4284 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4285 rctl
|= E1000_RCTL_VFE
;
4286 rctl
&= ~E1000_RCTL_CFIEN
;
4287 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4288 e1000_update_mng_vlan(adapter
);
4290 /* disable VLAN tag insert/strip */
4291 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4292 ctrl
&= ~E1000_CTRL_VME
;
4293 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4295 /* disable VLAN filtering */
4296 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4297 rctl
&= ~E1000_RCTL_VFE
;
4298 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4299 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4300 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4301 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4305 e1000_irq_enable(adapter
);
4309 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4311 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4312 uint32_t vfta
, index
;
4314 if ((adapter
->hw
.mng_cookie
.status
&
4315 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4316 (vid
== adapter
->mng_vlan_id
))
4318 /* add VID to filter table */
4319 index
= (vid
>> 5) & 0x7F;
4320 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4321 vfta
|= (1 << (vid
& 0x1F));
4322 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4326 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4328 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4329 uint32_t vfta
, index
;
4331 e1000_irq_disable(adapter
);
4334 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4336 e1000_irq_enable(adapter
);
4338 if ((adapter
->hw
.mng_cookie
.status
&
4339 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4340 (vid
== adapter
->mng_vlan_id
)) {
4341 /* release control to f/w */
4342 e1000_release_hw_control(adapter
);
4346 /* remove VID from filter table */
4347 index
= (vid
>> 5) & 0x7F;
4348 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4349 vfta
&= ~(1 << (vid
& 0x1F));
4350 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4354 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4356 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4358 if (adapter
->vlgrp
) {
4360 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4361 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4363 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4369 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4371 adapter
->hw
.autoneg
= 0;
4373 /* Fiber NICs only allow 1000 gbps Full duplex */
4374 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4375 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4376 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4381 case SPEED_10
+ DUPLEX_HALF
:
4382 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4384 case SPEED_10
+ DUPLEX_FULL
:
4385 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4387 case SPEED_100
+ DUPLEX_HALF
:
4388 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4390 case SPEED_100
+ DUPLEX_FULL
:
4391 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4393 case SPEED_1000
+ DUPLEX_FULL
:
4394 adapter
->hw
.autoneg
= 1;
4395 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4397 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4399 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4406 /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config
4407 * space versus the 64 bytes that pci_[save|restore]_state handle
4409 #define PCIE_CONFIG_SPACE_LEN 256
4410 #define PCI_CONFIG_SPACE_LEN 64
4412 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4414 struct pci_dev
*dev
= adapter
->pdev
;
4417 if (adapter
->hw
.mac_type
>= e1000_82571
)
4418 size
= PCIE_CONFIG_SPACE_LEN
;
4420 size
= PCI_CONFIG_SPACE_LEN
;
4422 WARN_ON(adapter
->config_space
!= NULL
);
4424 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4425 if (!adapter
->config_space
) {
4426 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4429 for (i
= 0; i
< (size
/ 4); i
++)
4430 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4435 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4437 struct pci_dev
*dev
= adapter
->pdev
;
4440 if (adapter
->config_space
== NULL
)
4442 if (adapter
->hw
.mac_type
>= e1000_82571
)
4443 size
= PCIE_CONFIG_SPACE_LEN
;
4445 size
= PCI_CONFIG_SPACE_LEN
;
4446 for (i
= 0; i
< (size
/ 4); i
++)
4447 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4448 kfree(adapter
->config_space
);
4449 adapter
->config_space
= NULL
;
4452 #endif /* CONFIG_PM */
4455 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4457 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4458 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4459 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4460 uint32_t wufc
= adapter
->wol
;
4463 netif_device_detach(netdev
);
4465 if (netif_running(netdev
))
4466 e1000_down(adapter
);
4469 /* implement our own version of pci_save_state(pdev) because pci
4470 * express adapters have larger 256 byte config spaces */
4471 retval
= e1000_pci_save_state(adapter
);
4476 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4477 if (status
& E1000_STATUS_LU
)
4478 wufc
&= ~E1000_WUFC_LNKC
;
4481 e1000_setup_rctl(adapter
);
4482 e1000_set_multi(netdev
);
4484 /* turn on all-multi mode if wake on multicast is enabled */
4485 if (adapter
->wol
& E1000_WUFC_MC
) {
4486 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4487 rctl
|= E1000_RCTL_MPE
;
4488 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4491 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4492 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4493 /* advertise wake from D3Cold */
4494 #define E1000_CTRL_ADVD3WUC 0x00100000
4495 /* phy power management enable */
4496 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4497 ctrl
|= E1000_CTRL_ADVD3WUC
|
4498 E1000_CTRL_EN_PHY_PWR_MGMT
;
4499 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4502 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4503 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4504 /* keep the laser running in D3 */
4505 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4506 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4507 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4510 /* Allow time for pending master requests to run */
4511 e1000_disable_pciex_master(&adapter
->hw
);
4513 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4514 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4515 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4517 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4518 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4520 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4522 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4523 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4524 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4526 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4527 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0); /* 4 == D3 cold */
4529 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4532 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4533 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4534 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4535 if (manc
& E1000_MANC_SMBUS_EN
) {
4536 manc
|= E1000_MANC_ARP_EN
;
4537 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4538 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4540 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4541 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4543 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4547 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4548 * would have already happened in close and is redundant. */
4549 e1000_release_hw_control(adapter
);
4551 pci_disable_device(pdev
);
4553 retval
= pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4555 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4562 e1000_resume(struct pci_dev
*pdev
)
4564 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4565 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4567 uint32_t manc
, ret_val
;
4569 retval
= pci_set_power_state(pdev
, PCI_D0
);
4571 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4572 e1000_pci_restore_state(adapter
);
4573 ret_val
= pci_enable_device(pdev
);
4574 pci_set_master(pdev
);
4576 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4578 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4579 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0);
4581 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4583 e1000_reset(adapter
);
4584 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4586 if (netif_running(netdev
))
4589 netif_device_attach(netdev
);
4591 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4592 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4593 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4594 manc
&= ~(E1000_MANC_ARP_EN
);
4595 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4598 /* If the controller is 82573 and f/w is AMT, do not set
4599 * DRV_LOAD until the interface is up. For all other cases,
4600 * let the f/w know that the h/w is now under the control
4602 if (adapter
->hw
.mac_type
!= e1000_82573
||
4603 !e1000_check_mng_mode(&adapter
->hw
))
4604 e1000_get_hw_control(adapter
);
4609 #ifdef CONFIG_NET_POLL_CONTROLLER
4611 * Polling 'interrupt' - used by things like netconsole to send skbs
4612 * without having to re-enable interrupts. It's not called while
4613 * the interrupt routine is executing.
4616 e1000_netpoll(struct net_device
*netdev
)
4618 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4619 disable_irq(adapter
->pdev
->irq
);
4620 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4621 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4622 #ifndef CONFIG_E1000_NAPI
4623 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4625 enable_irq(adapter
->pdev
->irq
);