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 Added another fix for the pass false carrier bit
35 * o Need to rebuild with noew version number for the pass false carrier
38 * o fixup for tso workaround to disable it for pci-x
39 * o fix mem leak on 82542
40 * o fixes for 10 Mb/s connections and incorrect stats
42 * o hardware workaround to only set "speed mode" bit for 1G link.
44 * o wake on lan support modified for device ID 10B5
45 * o fix dhcp + vlan issue not making it to the iAMT firmware
47 * o New hardware support for the Gigabit NIC embedded in the south bridge
48 * o Fixes to the recycling logic (skb->tail) from IBM LTC
50 * o incorporate fix for recycled skbs from IBM LTC
52 * o Honor eeprom setting for enabling/disabling Wake On Lan
54 * o Fix memory leak in rx ring handling for PCI Express adapters
56 * o Patch from Jesper Juhl to remove redundant NULL checks for kfree
58 * o Render logic that sets/resets DRV_LOAD as inline functions to
59 * avoid code replication. If f/w is AMT then set DRV_LOAD only when
60 * network interface is open.
61 * o Handle DRV_LOAD set/reset in cases where AMT uses VLANs.
62 * o Adjust PBA partioning for Jumbo frames using MTU size and not
65 * o Use adapter->tx_timeout_factor in Tx Hung Detect logic
66 * (e1000_clean_tx_irq)
67 * o Support for 8086:10B5 device (Quad Port)
70 char e1000_driver_name
[] = "e1000";
71 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
72 #ifndef CONFIG_E1000_NAPI
75 #define DRIVERNAPI "-NAPI"
77 #define DRV_VERSION "7.0.33-k2"DRIVERNAPI
78 char e1000_driver_version
[] = DRV_VERSION
;
79 static char e1000_copyright
[] = "Copyright (c) 1999-2005 Intel Corporation.";
81 /* e1000_pci_tbl - PCI Device ID Table
83 * Last entry must be all 0s
86 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
88 static struct pci_device_id e1000_pci_tbl
[] = {
89 INTEL_E1000_ETHERNET_DEVICE(0x1000),
90 INTEL_E1000_ETHERNET_DEVICE(0x1001),
91 INTEL_E1000_ETHERNET_DEVICE(0x1004),
92 INTEL_E1000_ETHERNET_DEVICE(0x1008),
93 INTEL_E1000_ETHERNET_DEVICE(0x1009),
94 INTEL_E1000_ETHERNET_DEVICE(0x100C),
95 INTEL_E1000_ETHERNET_DEVICE(0x100D),
96 INTEL_E1000_ETHERNET_DEVICE(0x100E),
97 INTEL_E1000_ETHERNET_DEVICE(0x100F),
98 INTEL_E1000_ETHERNET_DEVICE(0x1010),
99 INTEL_E1000_ETHERNET_DEVICE(0x1011),
100 INTEL_E1000_ETHERNET_DEVICE(0x1012),
101 INTEL_E1000_ETHERNET_DEVICE(0x1013),
102 INTEL_E1000_ETHERNET_DEVICE(0x1014),
103 INTEL_E1000_ETHERNET_DEVICE(0x1015),
104 INTEL_E1000_ETHERNET_DEVICE(0x1016),
105 INTEL_E1000_ETHERNET_DEVICE(0x1017),
106 INTEL_E1000_ETHERNET_DEVICE(0x1018),
107 INTEL_E1000_ETHERNET_DEVICE(0x1019),
108 INTEL_E1000_ETHERNET_DEVICE(0x101A),
109 INTEL_E1000_ETHERNET_DEVICE(0x101D),
110 INTEL_E1000_ETHERNET_DEVICE(0x101E),
111 INTEL_E1000_ETHERNET_DEVICE(0x1026),
112 INTEL_E1000_ETHERNET_DEVICE(0x1027),
113 INTEL_E1000_ETHERNET_DEVICE(0x1028),
114 INTEL_E1000_ETHERNET_DEVICE(0x105E),
115 INTEL_E1000_ETHERNET_DEVICE(0x105F),
116 INTEL_E1000_ETHERNET_DEVICE(0x1060),
117 INTEL_E1000_ETHERNET_DEVICE(0x1075),
118 INTEL_E1000_ETHERNET_DEVICE(0x1076),
119 INTEL_E1000_ETHERNET_DEVICE(0x1077),
120 INTEL_E1000_ETHERNET_DEVICE(0x1078),
121 INTEL_E1000_ETHERNET_DEVICE(0x1079),
122 INTEL_E1000_ETHERNET_DEVICE(0x107A),
123 INTEL_E1000_ETHERNET_DEVICE(0x107B),
124 INTEL_E1000_ETHERNET_DEVICE(0x107C),
125 INTEL_E1000_ETHERNET_DEVICE(0x107D),
126 INTEL_E1000_ETHERNET_DEVICE(0x107E),
127 INTEL_E1000_ETHERNET_DEVICE(0x107F),
128 INTEL_E1000_ETHERNET_DEVICE(0x108A),
129 INTEL_E1000_ETHERNET_DEVICE(0x108B),
130 INTEL_E1000_ETHERNET_DEVICE(0x108C),
131 INTEL_E1000_ETHERNET_DEVICE(0x1096),
132 INTEL_E1000_ETHERNET_DEVICE(0x1098),
133 INTEL_E1000_ETHERNET_DEVICE(0x1099),
134 INTEL_E1000_ETHERNET_DEVICE(0x109A),
135 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
136 INTEL_E1000_ETHERNET_DEVICE(0x10B9),
137 /* required last entry */
141 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
143 int e1000_up(struct e1000_adapter
*adapter
);
144 void e1000_down(struct e1000_adapter
*adapter
);
145 void e1000_reset(struct e1000_adapter
*adapter
);
146 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
147 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
148 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
149 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
150 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
151 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
152 struct e1000_tx_ring
*txdr
);
153 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
154 struct e1000_rx_ring
*rxdr
);
155 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
156 struct e1000_tx_ring
*tx_ring
);
157 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
158 struct e1000_rx_ring
*rx_ring
);
159 void e1000_update_stats(struct e1000_adapter
*adapter
);
161 /* Local Function Prototypes */
163 static int e1000_init_module(void);
164 static void e1000_exit_module(void);
165 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
166 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
167 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
168 static int e1000_sw_init(struct e1000_adapter
*adapter
);
169 static int e1000_open(struct net_device
*netdev
);
170 static int e1000_close(struct net_device
*netdev
);
171 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
172 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
173 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
174 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
175 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
176 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
177 struct e1000_tx_ring
*tx_ring
);
178 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
179 struct e1000_rx_ring
*rx_ring
);
180 static void e1000_set_multi(struct net_device
*netdev
);
181 static void e1000_update_phy_info(unsigned long data
);
182 static void e1000_watchdog(unsigned long data
);
183 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
184 static void e1000_82547_tx_fifo_stall(unsigned long data
);
185 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
186 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
187 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
188 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
189 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
190 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
191 struct e1000_tx_ring
*tx_ring
);
192 #ifdef CONFIG_E1000_NAPI
193 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
194 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
195 struct e1000_rx_ring
*rx_ring
,
196 int *work_done
, int work_to_do
);
197 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
198 struct e1000_rx_ring
*rx_ring
,
199 int *work_done
, int work_to_do
);
201 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
202 struct e1000_rx_ring
*rx_ring
);
203 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
204 struct e1000_rx_ring
*rx_ring
);
206 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
207 struct e1000_rx_ring
*rx_ring
,
209 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
210 struct e1000_rx_ring
*rx_ring
,
212 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
213 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
215 void e1000_set_ethtool_ops(struct net_device
*netdev
);
216 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
217 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
218 static void e1000_tx_timeout(struct net_device
*dev
);
219 static void e1000_reset_task(struct net_device
*dev
);
220 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
221 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
222 struct sk_buff
*skb
);
224 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
225 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
226 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
227 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
230 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
231 static int e1000_resume(struct pci_dev
*pdev
);
234 #ifdef CONFIG_NET_POLL_CONTROLLER
235 /* for netdump / net console */
236 static void e1000_netpoll (struct net_device
*netdev
);
240 /* Exported from other modules */
242 extern void e1000_check_options(struct e1000_adapter
*adapter
);
244 static struct pci_driver e1000_driver
= {
245 .name
= e1000_driver_name
,
246 .id_table
= e1000_pci_tbl
,
247 .probe
= e1000_probe
,
248 .remove
= __devexit_p(e1000_remove
),
249 /* Power Managment Hooks */
251 .suspend
= e1000_suspend
,
252 .resume
= e1000_resume
256 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
257 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
258 MODULE_LICENSE("GPL");
259 MODULE_VERSION(DRV_VERSION
);
261 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
262 module_param(debug
, int, 0);
263 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
266 * e1000_init_module - Driver Registration Routine
268 * e1000_init_module is the first routine called when the driver is
269 * loaded. All it does is register with the PCI subsystem.
273 e1000_init_module(void)
276 printk(KERN_INFO
"%s - version %s\n",
277 e1000_driver_string
, e1000_driver_version
);
279 printk(KERN_INFO
"%s\n", e1000_copyright
);
281 ret
= pci_module_init(&e1000_driver
);
286 module_init(e1000_init_module
);
289 * e1000_exit_module - Driver Exit Cleanup Routine
291 * e1000_exit_module is called just before the driver is removed
296 e1000_exit_module(void)
298 pci_unregister_driver(&e1000_driver
);
301 module_exit(e1000_exit_module
);
304 * e1000_irq_disable - Mask off interrupt generation on the NIC
305 * @adapter: board private structure
309 e1000_irq_disable(struct e1000_adapter
*adapter
)
311 atomic_inc(&adapter
->irq_sem
);
312 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
313 E1000_WRITE_FLUSH(&adapter
->hw
);
314 synchronize_irq(adapter
->pdev
->irq
);
318 * e1000_irq_enable - Enable default interrupt generation settings
319 * @adapter: board private structure
323 e1000_irq_enable(struct e1000_adapter
*adapter
)
325 if (likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
326 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
327 E1000_WRITE_FLUSH(&adapter
->hw
);
332 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
334 struct net_device
*netdev
= adapter
->netdev
;
335 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
336 uint16_t old_vid
= adapter
->mng_vlan_id
;
337 if (adapter
->vlgrp
) {
338 if (!adapter
->vlgrp
->vlan_devices
[vid
]) {
339 if (adapter
->hw
.mng_cookie
.status
&
340 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
341 e1000_vlan_rx_add_vid(netdev
, vid
);
342 adapter
->mng_vlan_id
= vid
;
344 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
346 if ((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
348 !adapter
->vlgrp
->vlan_devices
[old_vid
])
349 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
351 adapter
->mng_vlan_id
= vid
;
356 * e1000_release_hw_control - release control of the h/w to f/w
357 * @adapter: address of board private structure
359 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
360 * For ASF and Pass Through versions of f/w this means that the
361 * driver is no longer loaded. For AMT version (only with 82573) i
362 * of the f/w this means that the netowrk i/f is closed.
367 e1000_release_hw_control(struct e1000_adapter
*adapter
)
372 /* Let firmware taken over control of h/w */
373 switch (adapter
->hw
.mac_type
) {
376 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
377 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
378 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
381 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
382 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
383 swsm
& ~E1000_SWSM_DRV_LOAD
);
390 * e1000_get_hw_control - get control of the h/w from f/w
391 * @adapter: address of board private structure
393 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
394 * For ASF and Pass Through versions of f/w this means that
395 * the driver is loaded. For AMT version (only with 82573)
396 * of the f/w this means that the netowrk i/f is open.
401 e1000_get_hw_control(struct e1000_adapter
*adapter
)
405 /* Let firmware know the driver has taken over */
406 switch (adapter
->hw
.mac_type
) {
409 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
410 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
411 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
414 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
415 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
416 swsm
| E1000_SWSM_DRV_LOAD
);
424 e1000_up(struct e1000_adapter
*adapter
)
426 struct net_device
*netdev
= adapter
->netdev
;
429 /* hardware has been reset, we need to reload some things */
431 /* Reset the PHY if it was previously powered down */
432 if (adapter
->hw
.media_type
== e1000_media_type_copper
) {
434 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
435 if (mii_reg
& MII_CR_POWER_DOWN
)
436 e1000_phy_reset(&adapter
->hw
);
439 e1000_set_multi(netdev
);
441 e1000_restore_vlan(adapter
);
443 e1000_configure_tx(adapter
);
444 e1000_setup_rctl(adapter
);
445 e1000_configure_rx(adapter
);
446 /* call E1000_DESC_UNUSED which always leaves
447 * at least 1 descriptor unused to make sure
448 * next_to_use != next_to_clean */
449 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
450 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[i
];
451 adapter
->alloc_rx_buf(adapter
, ring
,
452 E1000_DESC_UNUSED(ring
));
455 #ifdef CONFIG_PCI_MSI
456 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
457 adapter
->have_msi
= TRUE
;
458 if ((err
= pci_enable_msi(adapter
->pdev
))) {
460 "Unable to allocate MSI interrupt Error: %d\n", err
);
461 adapter
->have_msi
= FALSE
;
465 if ((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
466 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
467 netdev
->name
, netdev
))) {
469 "Unable to allocate interrupt Error: %d\n", err
);
473 adapter
->tx_queue_len
= netdev
->tx_queue_len
;
475 mod_timer(&adapter
->watchdog_timer
, jiffies
);
477 #ifdef CONFIG_E1000_NAPI
478 netif_poll_enable(netdev
);
480 e1000_irq_enable(adapter
);
486 e1000_down(struct e1000_adapter
*adapter
)
488 struct net_device
*netdev
= adapter
->netdev
;
489 boolean_t mng_mode_enabled
= (adapter
->hw
.mac_type
>= e1000_82571
) &&
490 e1000_check_mng_mode(&adapter
->hw
);
492 e1000_irq_disable(adapter
);
494 free_irq(adapter
->pdev
->irq
, netdev
);
495 #ifdef CONFIG_PCI_MSI
496 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
497 adapter
->have_msi
== TRUE
)
498 pci_disable_msi(adapter
->pdev
);
500 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
501 del_timer_sync(&adapter
->watchdog_timer
);
502 del_timer_sync(&adapter
->phy_info_timer
);
504 #ifdef CONFIG_E1000_NAPI
505 netif_poll_disable(netdev
);
507 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
508 adapter
->link_speed
= 0;
509 adapter
->link_duplex
= 0;
510 netif_carrier_off(netdev
);
511 netif_stop_queue(netdev
);
513 e1000_reset(adapter
);
514 e1000_clean_all_tx_rings(adapter
);
515 e1000_clean_all_rx_rings(adapter
);
517 /* Power down the PHY so no link is implied when interface is down *
518 * The PHY cannot be powered down if any of the following is TRUE *
521 * (c) SoL/IDER session is active */
522 if (!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
523 adapter
->hw
.media_type
== e1000_media_type_copper
&&
524 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
) &&
526 !e1000_check_phy_reset_block(&adapter
->hw
)) {
528 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
529 mii_reg
|= MII_CR_POWER_DOWN
;
530 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
536 e1000_reset(struct e1000_adapter
*adapter
)
539 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
541 /* Repartition Pba for greater than 9k mtu
542 * To take effect CTRL.RST is required.
545 switch (adapter
->hw
.mac_type
) {
547 case e1000_82547_rev_2
:
552 case e1000_80003es2lan
:
563 if ((adapter
->hw
.mac_type
!= e1000_82573
) &&
564 (adapter
->netdev
->mtu
> E1000_RXBUFFER_8192
))
565 pba
-= 8; /* allocate more FIFO for Tx */
568 if (adapter
->hw
.mac_type
== e1000_82547
) {
569 adapter
->tx_fifo_head
= 0;
570 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
571 adapter
->tx_fifo_size
=
572 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
573 atomic_set(&adapter
->tx_fifo_stall
, 0);
576 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
578 /* flow control settings */
579 /* Set the FC high water mark to 90% of the FIFO size.
580 * Required to clear last 3 LSB */
581 fc_high_water_mark
= ((pba
* 9216)/10) & 0xFFF8;
583 adapter
->hw
.fc_high_water
= fc_high_water_mark
;
584 adapter
->hw
.fc_low_water
= fc_high_water_mark
- 8;
585 if (adapter
->hw
.mac_type
== e1000_80003es2lan
)
586 adapter
->hw
.fc_pause_time
= 0xFFFF;
588 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
589 adapter
->hw
.fc_send_xon
= 1;
590 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
592 /* Allow time for pending master requests to run */
593 e1000_reset_hw(&adapter
->hw
);
594 if (adapter
->hw
.mac_type
>= e1000_82544
)
595 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
596 if (e1000_init_hw(&adapter
->hw
))
597 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
598 e1000_update_mng_vlan(adapter
);
599 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
600 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
602 e1000_reset_adaptive(&adapter
->hw
);
603 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
604 if (adapter
->en_mng_pt
) {
605 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
606 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
607 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
612 * e1000_probe - Device Initialization Routine
613 * @pdev: PCI device information struct
614 * @ent: entry in e1000_pci_tbl
616 * Returns 0 on success, negative on failure
618 * e1000_probe initializes an adapter identified by a pci_dev structure.
619 * The OS initialization, configuring of the adapter private structure,
620 * and a hardware reset occur.
624 e1000_probe(struct pci_dev
*pdev
,
625 const struct pci_device_id
*ent
)
627 struct net_device
*netdev
;
628 struct e1000_adapter
*adapter
;
629 unsigned long mmio_start
, mmio_len
;
631 static int cards_found
= 0;
632 static int e1000_ksp3_port_a
= 0; /* global ksp3 port a indication */
633 int i
, err
, pci_using_dac
;
634 uint16_t eeprom_data
;
635 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
636 if ((err
= pci_enable_device(pdev
)))
639 if (!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
642 if ((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
643 E1000_ERR("No usable DMA configuration, aborting\n");
649 if ((err
= pci_request_regions(pdev
, e1000_driver_name
)))
652 pci_set_master(pdev
);
654 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
657 goto err_alloc_etherdev
;
660 SET_MODULE_OWNER(netdev
);
661 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
663 pci_set_drvdata(pdev
, netdev
);
664 adapter
= netdev_priv(netdev
);
665 adapter
->netdev
= netdev
;
666 adapter
->pdev
= pdev
;
667 adapter
->hw
.back
= adapter
;
668 adapter
->msg_enable
= (1 << debug
) - 1;
670 mmio_start
= pci_resource_start(pdev
, BAR_0
);
671 mmio_len
= pci_resource_len(pdev
, BAR_0
);
673 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
674 if (!adapter
->hw
.hw_addr
) {
679 for (i
= BAR_1
; i
<= BAR_5
; i
++) {
680 if (pci_resource_len(pdev
, i
) == 0)
682 if (pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
683 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
688 netdev
->open
= &e1000_open
;
689 netdev
->stop
= &e1000_close
;
690 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
691 netdev
->get_stats
= &e1000_get_stats
;
692 netdev
->set_multicast_list
= &e1000_set_multi
;
693 netdev
->set_mac_address
= &e1000_set_mac
;
694 netdev
->change_mtu
= &e1000_change_mtu
;
695 netdev
->do_ioctl
= &e1000_ioctl
;
696 e1000_set_ethtool_ops(netdev
);
697 netdev
->tx_timeout
= &e1000_tx_timeout
;
698 netdev
->watchdog_timeo
= 5 * HZ
;
699 #ifdef CONFIG_E1000_NAPI
700 netdev
->poll
= &e1000_clean
;
703 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
704 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
705 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
706 #ifdef CONFIG_NET_POLL_CONTROLLER
707 netdev
->poll_controller
= e1000_netpoll
;
709 strcpy(netdev
->name
, pci_name(pdev
));
711 netdev
->mem_start
= mmio_start
;
712 netdev
->mem_end
= mmio_start
+ mmio_len
;
713 netdev
->base_addr
= adapter
->hw
.io_base
;
715 adapter
->bd_number
= cards_found
;
717 /* setup the private structure */
719 if ((err
= e1000_sw_init(adapter
)))
722 if ((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
723 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
725 /* if ksp3, indicate if it's port a being setup */
726 if (pdev
->device
== E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3
&&
727 e1000_ksp3_port_a
== 0)
728 adapter
->ksp3_port_a
= 1;
730 /* Reset for multiple KP3 adapters */
731 if (e1000_ksp3_port_a
== 4)
732 e1000_ksp3_port_a
= 0;
734 if (adapter
->hw
.mac_type
>= e1000_82543
) {
735 netdev
->features
= NETIF_F_SG
|
739 NETIF_F_HW_VLAN_FILTER
;
743 if ((adapter
->hw
.mac_type
>= e1000_82544
) &&
744 (adapter
->hw
.mac_type
!= e1000_82547
))
745 netdev
->features
|= NETIF_F_TSO
;
747 #ifdef NETIF_F_TSO_IPV6
748 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
749 netdev
->features
|= NETIF_F_TSO_IPV6
;
753 netdev
->features
|= NETIF_F_HIGHDMA
;
755 /* hard_start_xmit is safe against parallel locking */
756 netdev
->features
|= NETIF_F_LLTX
;
758 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
760 /* before reading the EEPROM, reset the controller to
761 * put the device in a known good starting state */
763 e1000_reset_hw(&adapter
->hw
);
765 /* make sure the EEPROM is good */
767 if (e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
768 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
773 /* copy the MAC address out of the EEPROM */
775 if (e1000_read_mac_addr(&adapter
->hw
))
776 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
777 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
778 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
780 if (!is_valid_ether_addr(netdev
->perm_addr
)) {
781 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
786 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
788 e1000_get_bus_info(&adapter
->hw
);
790 init_timer(&adapter
->tx_fifo_stall_timer
);
791 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
792 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
794 init_timer(&adapter
->watchdog_timer
);
795 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
796 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
798 INIT_WORK(&adapter
->watchdog_task
,
799 (void (*)(void *))e1000_watchdog_task
, adapter
);
801 init_timer(&adapter
->phy_info_timer
);
802 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
803 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
805 INIT_WORK(&adapter
->reset_task
,
806 (void (*)(void *))e1000_reset_task
, netdev
);
808 /* we're going to reset, so assume we have no link for now */
810 netif_carrier_off(netdev
);
811 netif_stop_queue(netdev
);
813 e1000_check_options(adapter
);
815 /* Initial Wake on LAN setting
816 * If APM wake is enabled in the EEPROM,
817 * enable the ACPI Magic Packet filter
820 switch (adapter
->hw
.mac_type
) {
821 case e1000_82542_rev2_0
:
822 case e1000_82542_rev2_1
:
826 e1000_read_eeprom(&adapter
->hw
,
827 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
828 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
831 case e1000_82546_rev_3
:
833 case e1000_80003es2lan
:
834 if (E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
){
835 e1000_read_eeprom(&adapter
->hw
,
836 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
841 e1000_read_eeprom(&adapter
->hw
,
842 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
845 if (eeprom_data
& eeprom_apme_mask
)
846 adapter
->wol
|= E1000_WUFC_MAG
;
848 /* print bus type/speed/width info */
850 struct e1000_hw
*hw
= &adapter
->hw
;
851 DPRINTK(PROBE
, INFO
, "(PCI%s:%s:%s) ",
852 ((hw
->bus_type
== e1000_bus_type_pcix
) ? "-X" :
853 (hw
->bus_type
== e1000_bus_type_pci_express
? " Express":"")),
854 ((hw
->bus_speed
== e1000_bus_speed_2500
) ? "2.5Gb/s" :
855 (hw
->bus_speed
== e1000_bus_speed_133
) ? "133MHz" :
856 (hw
->bus_speed
== e1000_bus_speed_120
) ? "120MHz" :
857 (hw
->bus_speed
== e1000_bus_speed_100
) ? "100MHz" :
858 (hw
->bus_speed
== e1000_bus_speed_66
) ? "66MHz" : "33MHz"),
859 ((hw
->bus_width
== e1000_bus_width_64
) ? "64-bit" :
860 (hw
->bus_width
== e1000_bus_width_pciex_4
) ? "Width x4" :
861 (hw
->bus_width
== e1000_bus_width_pciex_1
) ? "Width x1" :
865 for (i
= 0; i
< 6; i
++)
866 printk("%2.2x%c", netdev
->dev_addr
[i
], i
== 5 ? '\n' : ':');
868 /* reset the hardware with the new settings */
869 e1000_reset(adapter
);
871 /* If the controller is 82573 and f/w is AMT, do not set
872 * DRV_LOAD until the interface is up. For all other cases,
873 * let the f/w know that the h/w is now under the control
875 if (adapter
->hw
.mac_type
!= e1000_82573
||
876 !e1000_check_mng_mode(&adapter
->hw
))
877 e1000_get_hw_control(adapter
);
879 strcpy(netdev
->name
, "eth%d");
880 if ((err
= register_netdev(netdev
)))
883 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
891 iounmap(adapter
->hw
.hw_addr
);
895 pci_release_regions(pdev
);
900 * e1000_remove - Device Removal Routine
901 * @pdev: PCI device information struct
903 * e1000_remove is called by the PCI subsystem to alert the driver
904 * that it should release a PCI device. The could be caused by a
905 * Hot-Plug event, or because the driver is going to be removed from
909 static void __devexit
910 e1000_remove(struct pci_dev
*pdev
)
912 struct net_device
*netdev
= pci_get_drvdata(pdev
);
913 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
915 #ifdef CONFIG_E1000_NAPI
919 flush_scheduled_work();
921 if (adapter
->hw
.mac_type
>= e1000_82540
&&
922 adapter
->hw
.media_type
== e1000_media_type_copper
) {
923 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
924 if (manc
& E1000_MANC_SMBUS_EN
) {
925 manc
|= E1000_MANC_ARP_EN
;
926 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
930 /* Release control of h/w to f/w. If f/w is AMT enabled, this
931 * would have already happened in close and is redundant. */
932 e1000_release_hw_control(adapter
);
934 unregister_netdev(netdev
);
935 #ifdef CONFIG_E1000_NAPI
936 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
937 __dev_put(&adapter
->polling_netdev
[i
]);
940 if (!e1000_check_phy_reset_block(&adapter
->hw
))
941 e1000_phy_hw_reset(&adapter
->hw
);
943 kfree(adapter
->tx_ring
);
944 kfree(adapter
->rx_ring
);
945 #ifdef CONFIG_E1000_NAPI
946 kfree(adapter
->polling_netdev
);
949 iounmap(adapter
->hw
.hw_addr
);
950 pci_release_regions(pdev
);
954 pci_disable_device(pdev
);
958 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
959 * @adapter: board private structure to initialize
961 * e1000_sw_init initializes the Adapter private data structure.
962 * Fields are initialized based on PCI device information and
963 * OS network device settings (MTU size).
967 e1000_sw_init(struct e1000_adapter
*adapter
)
969 struct e1000_hw
*hw
= &adapter
->hw
;
970 struct net_device
*netdev
= adapter
->netdev
;
971 struct pci_dev
*pdev
= adapter
->pdev
;
972 #ifdef CONFIG_E1000_NAPI
976 /* PCI config space info */
978 hw
->vendor_id
= pdev
->vendor
;
979 hw
->device_id
= pdev
->device
;
980 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
981 hw
->subsystem_id
= pdev
->subsystem_device
;
983 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
985 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
987 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
988 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
989 hw
->max_frame_size
= netdev
->mtu
+
990 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
991 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
993 /* identify the MAC */
995 if (e1000_set_mac_type(hw
)) {
996 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
1000 /* initialize eeprom parameters */
1002 if (e1000_init_eeprom_params(hw
)) {
1003 E1000_ERR("EEPROM initialization failed\n");
1007 switch (hw
->mac_type
) {
1012 case e1000_82541_rev_2
:
1013 case e1000_82547_rev_2
:
1014 hw
->phy_init_script
= 1;
1018 e1000_set_media_type(hw
);
1020 hw
->wait_autoneg_complete
= FALSE
;
1021 hw
->tbi_compatibility_en
= TRUE
;
1022 hw
->adaptive_ifs
= TRUE
;
1024 /* Copper options */
1026 if (hw
->media_type
== e1000_media_type_copper
) {
1027 hw
->mdix
= AUTO_ALL_MODES
;
1028 hw
->disable_polarity_correction
= FALSE
;
1029 hw
->master_slave
= E1000_MASTER_SLAVE
;
1032 adapter
->num_tx_queues
= 1;
1033 adapter
->num_rx_queues
= 1;
1035 if (e1000_alloc_queues(adapter
)) {
1036 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
1040 #ifdef CONFIG_E1000_NAPI
1041 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1042 adapter
->polling_netdev
[i
].priv
= adapter
;
1043 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
1044 adapter
->polling_netdev
[i
].weight
= 64;
1045 dev_hold(&adapter
->polling_netdev
[i
]);
1046 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
1048 spin_lock_init(&adapter
->tx_queue_lock
);
1051 atomic_set(&adapter
->irq_sem
, 1);
1052 spin_lock_init(&adapter
->stats_lock
);
1058 * e1000_alloc_queues - Allocate memory for all rings
1059 * @adapter: board private structure to initialize
1061 * We allocate one ring per queue at run-time since we don't know the
1062 * number of queues at compile-time. The polling_netdev array is
1063 * intended for Multiqueue, but should work fine with a single queue.
1066 static int __devinit
1067 e1000_alloc_queues(struct e1000_adapter
*adapter
)
1071 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_tx_queues
;
1072 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
1073 if (!adapter
->tx_ring
)
1075 memset(adapter
->tx_ring
, 0, size
);
1077 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_rx_queues
;
1078 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
1079 if (!adapter
->rx_ring
) {
1080 kfree(adapter
->tx_ring
);
1083 memset(adapter
->rx_ring
, 0, size
);
1085 #ifdef CONFIG_E1000_NAPI
1086 size
= sizeof(struct net_device
) * adapter
->num_rx_queues
;
1087 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
1088 if (!adapter
->polling_netdev
) {
1089 kfree(adapter
->tx_ring
);
1090 kfree(adapter
->rx_ring
);
1093 memset(adapter
->polling_netdev
, 0, size
);
1096 return E1000_SUCCESS
;
1100 * e1000_open - Called when a network interface is made active
1101 * @netdev: network interface device structure
1103 * Returns 0 on success, negative value on failure
1105 * The open entry point is called when a network interface is made
1106 * active by the system (IFF_UP). At this point all resources needed
1107 * for transmit and receive operations are allocated, the interrupt
1108 * handler is registered with the OS, the watchdog timer is started,
1109 * and the stack is notified that the interface is ready.
1113 e1000_open(struct net_device
*netdev
)
1115 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1118 /* allocate transmit descriptors */
1120 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1123 /* allocate receive descriptors */
1125 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1128 if ((err
= e1000_up(adapter
)))
1130 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1131 if ((adapter
->hw
.mng_cookie
.status
&
1132 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1133 e1000_update_mng_vlan(adapter
);
1136 /* If AMT is enabled, let the firmware know that the network
1137 * interface is now open */
1138 if (adapter
->hw
.mac_type
== e1000_82573
&&
1139 e1000_check_mng_mode(&adapter
->hw
))
1140 e1000_get_hw_control(adapter
);
1142 return E1000_SUCCESS
;
1145 e1000_free_all_rx_resources(adapter
);
1147 e1000_free_all_tx_resources(adapter
);
1149 e1000_reset(adapter
);
1155 * e1000_close - Disables a network interface
1156 * @netdev: network interface device structure
1158 * Returns 0, this is not allowed to fail
1160 * The close entry point is called when an interface is de-activated
1161 * by the OS. The hardware is still under the drivers control, but
1162 * needs to be disabled. A global MAC reset is issued to stop the
1163 * hardware, and all transmit and receive resources are freed.
1167 e1000_close(struct net_device
*netdev
)
1169 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1171 e1000_down(adapter
);
1173 e1000_free_all_tx_resources(adapter
);
1174 e1000_free_all_rx_resources(adapter
);
1176 if ((adapter
->hw
.mng_cookie
.status
&
1177 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1178 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1181 /* If AMT is enabled, let the firmware know that the network
1182 * interface is now closed */
1183 if (adapter
->hw
.mac_type
== e1000_82573
&&
1184 e1000_check_mng_mode(&adapter
->hw
))
1185 e1000_release_hw_control(adapter
);
1191 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1192 * @adapter: address of board private structure
1193 * @start: address of beginning of memory
1194 * @len: length of memory
1196 static inline boolean_t
1197 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1198 void *start
, unsigned long len
)
1200 unsigned long begin
= (unsigned long) start
;
1201 unsigned long end
= begin
+ len
;
1203 /* First rev 82545 and 82546 need to not allow any memory
1204 * write location to cross 64k boundary due to errata 23 */
1205 if (adapter
->hw
.mac_type
== e1000_82545
||
1206 adapter
->hw
.mac_type
== e1000_82546
) {
1207 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1214 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1215 * @adapter: board private structure
1216 * @txdr: tx descriptor ring (for a specific queue) to setup
1218 * Return 0 on success, negative on failure
1222 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1223 struct e1000_tx_ring
*txdr
)
1225 struct pci_dev
*pdev
= adapter
->pdev
;
1228 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1230 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1231 if (!txdr
->buffer_info
) {
1233 "Unable to allocate memory for the transmit descriptor ring\n");
1236 memset(txdr
->buffer_info
, 0, size
);
1238 /* round up to nearest 4K */
1240 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1241 E1000_ROUNDUP(txdr
->size
, 4096);
1243 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1246 vfree(txdr
->buffer_info
);
1248 "Unable to allocate memory for the transmit descriptor ring\n");
1252 /* Fix for errata 23, can't cross 64kB boundary */
1253 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1254 void *olddesc
= txdr
->desc
;
1255 dma_addr_t olddma
= txdr
->dma
;
1256 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1257 "at %p\n", txdr
->size
, txdr
->desc
);
1258 /* Try again, without freeing the previous */
1259 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1260 /* Failed allocation, critical failure */
1262 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1263 goto setup_tx_desc_die
;
1266 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1268 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1270 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1272 "Unable to allocate aligned memory "
1273 "for the transmit descriptor ring\n");
1274 vfree(txdr
->buffer_info
);
1277 /* Free old allocation, new allocation was successful */
1278 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1281 memset(txdr
->desc
, 0, txdr
->size
);
1283 txdr
->next_to_use
= 0;
1284 txdr
->next_to_clean
= 0;
1285 spin_lock_init(&txdr
->tx_lock
);
1291 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1292 * (Descriptors) for all queues
1293 * @adapter: board private structure
1295 * If this function returns with an error, then it's possible one or
1296 * more of the rings is populated (while the rest are not). It is the
1297 * callers duty to clean those orphaned rings.
1299 * Return 0 on success, negative on failure
1303 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1307 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1308 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1311 "Allocation for Tx Queue %u failed\n", i
);
1320 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1321 * @adapter: board private structure
1323 * Configure the Tx unit of the MAC after a reset.
1327 e1000_configure_tx(struct e1000_adapter
*adapter
)
1330 struct e1000_hw
*hw
= &adapter
->hw
;
1331 uint32_t tdlen
, tctl
, tipg
, tarc
;
1332 uint32_t ipgr1
, ipgr2
;
1334 /* Setup the HW Tx Head and Tail descriptor pointers */
1336 switch (adapter
->num_tx_queues
) {
1339 tdba
= adapter
->tx_ring
[0].dma
;
1340 tdlen
= adapter
->tx_ring
[0].count
*
1341 sizeof(struct e1000_tx_desc
);
1342 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1343 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1344 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1345 E1000_WRITE_REG(hw
, TDH
, 0);
1346 E1000_WRITE_REG(hw
, TDT
, 0);
1347 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1348 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1352 /* Set the default values for the Tx Inter Packet Gap timer */
1354 if (hw
->media_type
== e1000_media_type_fiber
||
1355 hw
->media_type
== e1000_media_type_internal_serdes
)
1356 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1358 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1360 switch (hw
->mac_type
) {
1361 case e1000_82542_rev2_0
:
1362 case e1000_82542_rev2_1
:
1363 tipg
= DEFAULT_82542_TIPG_IPGT
;
1364 ipgr1
= DEFAULT_82542_TIPG_IPGR1
;
1365 ipgr2
= DEFAULT_82542_TIPG_IPGR2
;
1367 case e1000_80003es2lan
:
1368 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1369 ipgr2
= DEFAULT_80003ES2LAN_TIPG_IPGR2
;
1372 ipgr1
= DEFAULT_82543_TIPG_IPGR1
;
1373 ipgr2
= DEFAULT_82543_TIPG_IPGR2
;
1376 tipg
|= ipgr1
<< E1000_TIPG_IPGR1_SHIFT
;
1377 tipg
|= ipgr2
<< E1000_TIPG_IPGR2_SHIFT
;
1378 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1380 /* Set the Tx Interrupt Delay register */
1382 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1383 if (hw
->mac_type
>= e1000_82540
)
1384 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1386 /* Program the Transmit Control Register */
1388 tctl
= E1000_READ_REG(hw
, TCTL
);
1390 tctl
&= ~E1000_TCTL_CT
;
1391 tctl
|= E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1392 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1395 /* disable Multiple Reads for debugging */
1396 tctl
&= ~E1000_TCTL_MULR
;
1399 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1400 tarc
= E1000_READ_REG(hw
, TARC0
);
1401 tarc
|= ((1 << 25) | (1 << 21));
1402 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1403 tarc
= E1000_READ_REG(hw
, TARC1
);
1405 if (tctl
& E1000_TCTL_MULR
)
1409 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1410 } else if (hw
->mac_type
== e1000_80003es2lan
) {
1411 tarc
= E1000_READ_REG(hw
, TARC0
);
1413 if (hw
->media_type
== e1000_media_type_internal_serdes
)
1415 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1416 tarc
= E1000_READ_REG(hw
, TARC1
);
1418 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1421 e1000_config_collision_dist(hw
);
1423 /* Setup Transmit Descriptor Settings for eop descriptor */
1424 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1427 if (hw
->mac_type
< e1000_82543
)
1428 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1430 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1432 /* Cache if we're 82544 running in PCI-X because we'll
1433 * need this to apply a workaround later in the send path. */
1434 if (hw
->mac_type
== e1000_82544
&&
1435 hw
->bus_type
== e1000_bus_type_pcix
)
1436 adapter
->pcix_82544
= 1;
1438 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1443 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1444 * @adapter: board private structure
1445 * @rxdr: rx descriptor ring (for a specific queue) to setup
1447 * Returns 0 on success, negative on failure
1451 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1452 struct e1000_rx_ring
*rxdr
)
1454 struct pci_dev
*pdev
= adapter
->pdev
;
1457 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1458 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1459 if (!rxdr
->buffer_info
) {
1461 "Unable to allocate memory for the receive descriptor ring\n");
1464 memset(rxdr
->buffer_info
, 0, size
);
1466 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1467 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1468 if (!rxdr
->ps_page
) {
1469 vfree(rxdr
->buffer_info
);
1471 "Unable to allocate memory for the receive descriptor ring\n");
1474 memset(rxdr
->ps_page
, 0, size
);
1476 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1477 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1478 if (!rxdr
->ps_page_dma
) {
1479 vfree(rxdr
->buffer_info
);
1480 kfree(rxdr
->ps_page
);
1482 "Unable to allocate memory for the receive descriptor ring\n");
1485 memset(rxdr
->ps_page_dma
, 0, size
);
1487 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1488 desc_len
= sizeof(struct e1000_rx_desc
);
1490 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1492 /* Round up to nearest 4K */
1494 rxdr
->size
= rxdr
->count
* desc_len
;
1495 E1000_ROUNDUP(rxdr
->size
, 4096);
1497 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1501 "Unable to allocate memory for the receive descriptor ring\n");
1503 vfree(rxdr
->buffer_info
);
1504 kfree(rxdr
->ps_page
);
1505 kfree(rxdr
->ps_page_dma
);
1509 /* Fix for errata 23, can't cross 64kB boundary */
1510 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1511 void *olddesc
= rxdr
->desc
;
1512 dma_addr_t olddma
= rxdr
->dma
;
1513 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1514 "at %p\n", rxdr
->size
, rxdr
->desc
);
1515 /* Try again, without freeing the previous */
1516 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1517 /* Failed allocation, critical failure */
1519 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1521 "Unable to allocate memory "
1522 "for the receive descriptor ring\n");
1523 goto setup_rx_desc_die
;
1526 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1528 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1530 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1532 "Unable to allocate aligned memory "
1533 "for the receive descriptor ring\n");
1534 goto setup_rx_desc_die
;
1536 /* Free old allocation, new allocation was successful */
1537 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1540 memset(rxdr
->desc
, 0, rxdr
->size
);
1542 rxdr
->next_to_clean
= 0;
1543 rxdr
->next_to_use
= 0;
1549 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1550 * (Descriptors) for all queues
1551 * @adapter: board private structure
1553 * If this function returns with an error, then it's possible one or
1554 * more of the rings is populated (while the rest are not). It is the
1555 * callers duty to clean those orphaned rings.
1557 * Return 0 on success, negative on failure
1561 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1565 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
1566 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1569 "Allocation for Rx Queue %u failed\n", i
);
1578 * e1000_setup_rctl - configure the receive control registers
1579 * @adapter: Board private structure
1581 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1582 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1584 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1586 uint32_t rctl
, rfctl
;
1587 uint32_t psrctl
= 0;
1588 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1592 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1594 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1596 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1597 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1598 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1600 if (adapter
->hw
.mac_type
> e1000_82543
)
1601 rctl
|= E1000_RCTL_SECRC
;
1603 if (adapter
->hw
.tbi_compatibility_on
== 1)
1604 rctl
|= E1000_RCTL_SBP
;
1606 rctl
&= ~E1000_RCTL_SBP
;
1608 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1609 rctl
&= ~E1000_RCTL_LPE
;
1611 rctl
|= E1000_RCTL_LPE
;
1613 /* Setup buffer sizes */
1614 if (adapter
->hw
.mac_type
>= e1000_82571
) {
1615 /* We can now specify buffers in 1K increments.
1616 * BSIZE and BSEX are ignored in this case. */
1617 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1619 rctl
&= ~E1000_RCTL_SZ_4096
;
1620 rctl
|= E1000_RCTL_BSEX
;
1621 switch (adapter
->rx_buffer_len
) {
1622 case E1000_RXBUFFER_2048
:
1624 rctl
|= E1000_RCTL_SZ_2048
;
1625 rctl
&= ~E1000_RCTL_BSEX
;
1627 case E1000_RXBUFFER_4096
:
1628 rctl
|= E1000_RCTL_SZ_4096
;
1630 case E1000_RXBUFFER_8192
:
1631 rctl
|= E1000_RCTL_SZ_8192
;
1633 case E1000_RXBUFFER_16384
:
1634 rctl
|= E1000_RCTL_SZ_16384
;
1639 #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
1640 /* 82571 and greater support packet-split where the protocol
1641 * header is placed in skb->data and the packet data is
1642 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1643 * In the case of a non-split, skb->data is linearly filled,
1644 * followed by the page buffers. Therefore, skb->data is
1645 * sized to hold the largest protocol header.
1647 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1648 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1650 adapter
->rx_ps_pages
= pages
;
1652 adapter
->rx_ps_pages
= 0;
1654 if (adapter
->rx_ps_pages
) {
1655 /* Configure extra packet-split registers */
1656 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1657 rfctl
|= E1000_RFCTL_EXTEN
;
1658 /* disable IPv6 packet split support */
1659 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1660 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1662 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1664 psrctl
|= adapter
->rx_ps_bsize0
>>
1665 E1000_PSRCTL_BSIZE0_SHIFT
;
1667 switch (adapter
->rx_ps_pages
) {
1669 psrctl
|= PAGE_SIZE
<<
1670 E1000_PSRCTL_BSIZE3_SHIFT
;
1672 psrctl
|= PAGE_SIZE
<<
1673 E1000_PSRCTL_BSIZE2_SHIFT
;
1675 psrctl
|= PAGE_SIZE
>>
1676 E1000_PSRCTL_BSIZE1_SHIFT
;
1680 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1683 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1687 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1688 * @adapter: board private structure
1690 * Configure the Rx unit of the MAC after a reset.
1694 e1000_configure_rx(struct e1000_adapter
*adapter
)
1697 struct e1000_hw
*hw
= &adapter
->hw
;
1698 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1700 if (adapter
->rx_ps_pages
) {
1701 /* this is a 32 byte descriptor */
1702 rdlen
= adapter
->rx_ring
[0].count
*
1703 sizeof(union e1000_rx_desc_packet_split
);
1704 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1705 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1707 rdlen
= adapter
->rx_ring
[0].count
*
1708 sizeof(struct e1000_rx_desc
);
1709 adapter
->clean_rx
= e1000_clean_rx_irq
;
1710 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1713 /* disable receives while setting up the descriptors */
1714 rctl
= E1000_READ_REG(hw
, RCTL
);
1715 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1717 /* set the Receive Delay Timer Register */
1718 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1720 if (hw
->mac_type
>= e1000_82540
) {
1721 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1722 if (adapter
->itr
> 1)
1723 E1000_WRITE_REG(hw
, ITR
,
1724 1000000000 / (adapter
->itr
* 256));
1727 if (hw
->mac_type
>= e1000_82571
) {
1728 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1729 /* Reset delay timers after every interrupt */
1730 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1731 #ifdef CONFIG_E1000_NAPI
1732 /* Auto-Mask interrupts upon ICR read. */
1733 ctrl_ext
|= E1000_CTRL_EXT_IAME
;
1735 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1736 E1000_WRITE_REG(hw
, IAM
, ~0);
1737 E1000_WRITE_FLUSH(hw
);
1740 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1741 * the Base and Length of the Rx Descriptor Ring */
1742 switch (adapter
->num_rx_queues
) {
1745 rdba
= adapter
->rx_ring
[0].dma
;
1746 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1747 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1748 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1749 E1000_WRITE_REG(hw
, RDH
, 0);
1750 E1000_WRITE_REG(hw
, RDT
, 0);
1751 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1752 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1756 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1757 if (hw
->mac_type
>= e1000_82543
) {
1758 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1759 if (adapter
->rx_csum
== TRUE
) {
1760 rxcsum
|= E1000_RXCSUM_TUOFL
;
1762 /* Enable 82571 IPv4 payload checksum for UDP fragments
1763 * Must be used in conjunction with packet-split. */
1764 if ((hw
->mac_type
>= e1000_82571
) &&
1765 (adapter
->rx_ps_pages
)) {
1766 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1769 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1770 /* don't need to clear IPPCSE as it defaults to 0 */
1772 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1775 if (hw
->mac_type
== e1000_82573
)
1776 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1778 /* Enable Receives */
1779 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1783 * e1000_free_tx_resources - Free Tx Resources per Queue
1784 * @adapter: board private structure
1785 * @tx_ring: Tx descriptor ring for a specific queue
1787 * Free all transmit software resources
1791 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1792 struct e1000_tx_ring
*tx_ring
)
1794 struct pci_dev
*pdev
= adapter
->pdev
;
1796 e1000_clean_tx_ring(adapter
, tx_ring
);
1798 vfree(tx_ring
->buffer_info
);
1799 tx_ring
->buffer_info
= NULL
;
1801 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1803 tx_ring
->desc
= NULL
;
1807 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1808 * @adapter: board private structure
1810 * Free all transmit software resources
1814 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1818 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1819 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1823 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1824 struct e1000_buffer
*buffer_info
)
1826 if (buffer_info
->dma
) {
1827 pci_unmap_page(adapter
->pdev
,
1829 buffer_info
->length
,
1832 if (buffer_info
->skb
)
1833 dev_kfree_skb_any(buffer_info
->skb
);
1834 memset(buffer_info
, 0, sizeof(struct e1000_buffer
));
1838 * e1000_clean_tx_ring - Free Tx Buffers
1839 * @adapter: board private structure
1840 * @tx_ring: ring to be cleaned
1844 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1845 struct e1000_tx_ring
*tx_ring
)
1847 struct e1000_buffer
*buffer_info
;
1851 /* Free all the Tx ring sk_buffs */
1853 for (i
= 0; i
< tx_ring
->count
; i
++) {
1854 buffer_info
= &tx_ring
->buffer_info
[i
];
1855 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1858 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1859 memset(tx_ring
->buffer_info
, 0, size
);
1861 /* Zero out the descriptor ring */
1863 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1865 tx_ring
->next_to_use
= 0;
1866 tx_ring
->next_to_clean
= 0;
1867 tx_ring
->last_tx_tso
= 0;
1869 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1870 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1874 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1875 * @adapter: board private structure
1879 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1883 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
1884 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1888 * e1000_free_rx_resources - Free Rx Resources
1889 * @adapter: board private structure
1890 * @rx_ring: ring to clean the resources from
1892 * Free all receive software resources
1896 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1897 struct e1000_rx_ring
*rx_ring
)
1899 struct pci_dev
*pdev
= adapter
->pdev
;
1901 e1000_clean_rx_ring(adapter
, rx_ring
);
1903 vfree(rx_ring
->buffer_info
);
1904 rx_ring
->buffer_info
= NULL
;
1905 kfree(rx_ring
->ps_page
);
1906 rx_ring
->ps_page
= NULL
;
1907 kfree(rx_ring
->ps_page_dma
);
1908 rx_ring
->ps_page_dma
= NULL
;
1910 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1912 rx_ring
->desc
= NULL
;
1916 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1917 * @adapter: board private structure
1919 * Free all receive software resources
1923 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1927 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
1928 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1932 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1933 * @adapter: board private structure
1934 * @rx_ring: ring to free buffers from
1938 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1939 struct e1000_rx_ring
*rx_ring
)
1941 struct e1000_buffer
*buffer_info
;
1942 struct e1000_ps_page
*ps_page
;
1943 struct e1000_ps_page_dma
*ps_page_dma
;
1944 struct pci_dev
*pdev
= adapter
->pdev
;
1948 /* Free all the Rx ring sk_buffs */
1949 for (i
= 0; i
< rx_ring
->count
; i
++) {
1950 buffer_info
= &rx_ring
->buffer_info
[i
];
1951 if (buffer_info
->skb
) {
1952 pci_unmap_single(pdev
,
1954 buffer_info
->length
,
1955 PCI_DMA_FROMDEVICE
);
1957 dev_kfree_skb(buffer_info
->skb
);
1958 buffer_info
->skb
= NULL
;
1960 ps_page
= &rx_ring
->ps_page
[i
];
1961 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1962 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1963 if (!ps_page
->ps_page
[j
]) break;
1964 pci_unmap_page(pdev
,
1965 ps_page_dma
->ps_page_dma
[j
],
1966 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1967 ps_page_dma
->ps_page_dma
[j
] = 0;
1968 put_page(ps_page
->ps_page
[j
]);
1969 ps_page
->ps_page
[j
] = NULL
;
1973 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1974 memset(rx_ring
->buffer_info
, 0, size
);
1975 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1976 memset(rx_ring
->ps_page
, 0, size
);
1977 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1978 memset(rx_ring
->ps_page_dma
, 0, size
);
1980 /* Zero out the descriptor ring */
1982 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1984 rx_ring
->next_to_clean
= 0;
1985 rx_ring
->next_to_use
= 0;
1987 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1988 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1992 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1993 * @adapter: board private structure
1997 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
2001 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
2002 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
2005 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2006 * and memory write and invalidate disabled for certain operations
2009 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
2011 struct net_device
*netdev
= adapter
->netdev
;
2014 e1000_pci_clear_mwi(&adapter
->hw
);
2016 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2017 rctl
|= E1000_RCTL_RST
;
2018 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2019 E1000_WRITE_FLUSH(&adapter
->hw
);
2022 if (netif_running(netdev
))
2023 e1000_clean_all_rx_rings(adapter
);
2027 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
2029 struct net_device
*netdev
= adapter
->netdev
;
2032 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2033 rctl
&= ~E1000_RCTL_RST
;
2034 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2035 E1000_WRITE_FLUSH(&adapter
->hw
);
2038 if (adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2039 e1000_pci_set_mwi(&adapter
->hw
);
2041 if (netif_running(netdev
)) {
2042 /* No need to loop, because 82542 supports only 1 queue */
2043 struct e1000_rx_ring
*ring
= &adapter
->rx_ring
[0];
2044 e1000_configure_rx(adapter
);
2045 adapter
->alloc_rx_buf(adapter
, ring
, E1000_DESC_UNUSED(ring
));
2050 * e1000_set_mac - Change the Ethernet Address of the NIC
2051 * @netdev: network interface device structure
2052 * @p: pointer to an address structure
2054 * Returns 0 on success, negative on failure
2058 e1000_set_mac(struct net_device
*netdev
, void *p
)
2060 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2061 struct sockaddr
*addr
= p
;
2063 if (!is_valid_ether_addr(addr
->sa_data
))
2064 return -EADDRNOTAVAIL
;
2066 /* 82542 2.0 needs to be in reset to write receive address registers */
2068 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2069 e1000_enter_82542_rst(adapter
);
2071 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2072 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2074 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2076 /* With 82571 controllers, LAA may be overwritten (with the default)
2077 * due to controller reset from the other port. */
2078 if (adapter
->hw
.mac_type
== e1000_82571
) {
2079 /* activate the work around */
2080 adapter
->hw
.laa_is_present
= 1;
2082 /* Hold a copy of the LAA in RAR[14] This is done so that
2083 * between the time RAR[0] gets clobbered and the time it
2084 * gets fixed (in e1000_watchdog), the actual LAA is in one
2085 * of the RARs and no incoming packets directed to this port
2086 * are dropped. Eventaully the LAA will be in RAR[0] and
2088 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2089 E1000_RAR_ENTRIES
- 1);
2092 if (adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2093 e1000_leave_82542_rst(adapter
);
2099 * e1000_set_multi - Multicast and Promiscuous mode set
2100 * @netdev: network interface device structure
2102 * The set_multi entry point is called whenever the multicast address
2103 * list or the network interface flags are updated. This routine is
2104 * responsible for configuring the hardware for proper multicast,
2105 * promiscuous mode, and all-multi behavior.
2109 e1000_set_multi(struct net_device
*netdev
)
2111 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2112 struct e1000_hw
*hw
= &adapter
->hw
;
2113 struct dev_mc_list
*mc_ptr
;
2115 uint32_t hash_value
;
2116 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2118 /* reserve RAR[14] for LAA over-write work-around */
2119 if (adapter
->hw
.mac_type
== e1000_82571
)
2122 /* Check for Promiscuous and All Multicast modes */
2124 rctl
= E1000_READ_REG(hw
, RCTL
);
2126 if (netdev
->flags
& IFF_PROMISC
) {
2127 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2128 } else if (netdev
->flags
& IFF_ALLMULTI
) {
2129 rctl
|= E1000_RCTL_MPE
;
2130 rctl
&= ~E1000_RCTL_UPE
;
2132 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2135 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2137 /* 82542 2.0 needs to be in reset to write receive address registers */
2139 if (hw
->mac_type
== e1000_82542_rev2_0
)
2140 e1000_enter_82542_rst(adapter
);
2142 /* load the first 14 multicast address into the exact filters 1-14
2143 * RAR 0 is used for the station MAC adddress
2144 * if there are not 14 addresses, go ahead and clear the filters
2145 * -- with 82571 controllers only 0-13 entries are filled here
2147 mc_ptr
= netdev
->mc_list
;
2149 for (i
= 1; i
< rar_entries
; i
++) {
2151 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2152 mc_ptr
= mc_ptr
->next
;
2154 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2155 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2159 /* clear the old settings from the multicast hash table */
2161 for (i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2162 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2164 /* load any remaining addresses into the hash table */
2166 for (; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2167 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2168 e1000_mta_set(hw
, hash_value
);
2171 if (hw
->mac_type
== e1000_82542_rev2_0
)
2172 e1000_leave_82542_rst(adapter
);
2175 /* Need to wait a few seconds after link up to get diagnostic information from
2179 e1000_update_phy_info(unsigned long data
)
2181 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2182 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2186 * e1000_82547_tx_fifo_stall - Timer Call-back
2187 * @data: pointer to adapter cast into an unsigned long
2191 e1000_82547_tx_fifo_stall(unsigned long data
)
2193 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2194 struct net_device
*netdev
= adapter
->netdev
;
2197 if (atomic_read(&adapter
->tx_fifo_stall
)) {
2198 if ((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2199 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2200 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2201 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2202 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2203 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2204 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2205 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2206 tctl
& ~E1000_TCTL_EN
);
2207 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2208 adapter
->tx_head_addr
);
2209 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2210 adapter
->tx_head_addr
);
2211 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2212 adapter
->tx_head_addr
);
2213 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2214 adapter
->tx_head_addr
);
2215 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2216 E1000_WRITE_FLUSH(&adapter
->hw
);
2218 adapter
->tx_fifo_head
= 0;
2219 atomic_set(&adapter
->tx_fifo_stall
, 0);
2220 netif_wake_queue(netdev
);
2222 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2228 * e1000_watchdog - Timer Call-back
2229 * @data: pointer to adapter cast into an unsigned long
2232 e1000_watchdog(unsigned long data
)
2234 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2236 /* Do the rest outside of interrupt context */
2237 schedule_work(&adapter
->watchdog_task
);
2241 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2243 struct net_device
*netdev
= adapter
->netdev
;
2244 struct e1000_tx_ring
*txdr
= adapter
->tx_ring
;
2245 uint32_t link
, tctl
;
2247 e1000_check_for_link(&adapter
->hw
);
2248 if (adapter
->hw
.mac_type
== e1000_82573
) {
2249 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2250 if (adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2251 e1000_update_mng_vlan(adapter
);
2254 if ((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2255 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2256 link
= !adapter
->hw
.serdes_link_down
;
2258 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2261 if (!netif_carrier_ok(netdev
)) {
2262 e1000_get_speed_and_duplex(&adapter
->hw
,
2263 &adapter
->link_speed
,
2264 &adapter
->link_duplex
);
2266 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2267 adapter
->link_speed
,
2268 adapter
->link_duplex
== FULL_DUPLEX
?
2269 "Full Duplex" : "Half Duplex");
2271 /* tweak tx_queue_len according to speed/duplex
2272 * and adjust the timeout factor */
2273 netdev
->tx_queue_len
= adapter
->tx_queue_len
;
2274 adapter
->tx_timeout_factor
= 1;
2276 switch (adapter
->link_speed
) {
2279 netdev
->tx_queue_len
= 10;
2280 adapter
->tx_timeout_factor
= 8;
2284 netdev
->tx_queue_len
= 100;
2285 /* maybe add some timeout factor ? */
2289 if ((adapter
->hw
.mac_type
== e1000_82571
||
2290 adapter
->hw
.mac_type
== e1000_82572
) &&
2291 adapter
->txb2b
== 0) {
2292 #define SPEED_MODE_BIT (1 << 21)
2294 tarc0
= E1000_READ_REG(&adapter
->hw
, TARC0
);
2295 tarc0
&= ~SPEED_MODE_BIT
;
2296 E1000_WRITE_REG(&adapter
->hw
, TARC0
, tarc0
);
2300 /* disable TSO for pcie and 10/100 speeds, to avoid
2301 * some hardware issues */
2302 if (!adapter
->tso_force
&&
2303 adapter
->hw
.bus_type
== e1000_bus_type_pci_express
){
2304 switch (adapter
->link_speed
) {
2308 "10/100 speed: disabling TSO\n");
2309 netdev
->features
&= ~NETIF_F_TSO
;
2312 netdev
->features
|= NETIF_F_TSO
;
2321 /* enable transmits in the hardware, need to do this
2322 * after setting TARC0 */
2323 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2324 tctl
|= E1000_TCTL_EN
;
2325 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2327 netif_carrier_on(netdev
);
2328 netif_wake_queue(netdev
);
2329 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2330 adapter
->smartspeed
= 0;
2333 if (netif_carrier_ok(netdev
)) {
2334 adapter
->link_speed
= 0;
2335 adapter
->link_duplex
= 0;
2336 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2337 netif_carrier_off(netdev
);
2338 netif_stop_queue(netdev
);
2339 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2341 /* 80003ES2LAN workaround--
2342 * For packet buffer work-around on link down event;
2343 * disable receives in the ISR and
2344 * reset device here in the watchdog
2346 if (adapter
->hw
.mac_type
== e1000_80003es2lan
) {
2348 schedule_work(&adapter
->reset_task
);
2352 e1000_smartspeed(adapter
);
2355 e1000_update_stats(adapter
);
2357 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2358 adapter
->tpt_old
= adapter
->stats
.tpt
;
2359 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2360 adapter
->colc_old
= adapter
->stats
.colc
;
2362 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2363 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2364 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2365 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2367 e1000_update_adaptive(&adapter
->hw
);
2369 if (!netif_carrier_ok(netdev
)) {
2370 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2371 /* We've lost link, so the controller stops DMA,
2372 * but we've got queued Tx work that's never going
2373 * to get done, so reset controller to flush Tx.
2374 * (Do the reset outside of interrupt context). */
2375 adapter
->tx_timeout_count
++;
2376 schedule_work(&adapter
->reset_task
);
2380 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2381 if (adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2382 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2383 * asymmetrical Tx or Rx gets ITR=8000; everyone
2384 * else is between 2000-8000. */
2385 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2386 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2387 adapter
->gotcl
- adapter
->gorcl
:
2388 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2389 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2390 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2393 /* Cause software interrupt to ensure rx ring is cleaned */
2394 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2396 /* Force detection of hung controller every watchdog period */
2397 adapter
->detect_tx_hung
= TRUE
;
2399 /* With 82571 controllers, LAA may be overwritten due to controller
2400 * reset from the other port. Set the appropriate LAA in RAR[0] */
2401 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2402 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2404 /* Reset the timer */
2405 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2408 #define E1000_TX_FLAGS_CSUM 0x00000001
2409 #define E1000_TX_FLAGS_VLAN 0x00000002
2410 #define E1000_TX_FLAGS_TSO 0x00000004
2411 #define E1000_TX_FLAGS_IPV4 0x00000008
2412 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2413 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2416 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2417 struct sk_buff
*skb
)
2420 struct e1000_context_desc
*context_desc
;
2421 struct e1000_buffer
*buffer_info
;
2423 uint32_t cmd_length
= 0;
2424 uint16_t ipcse
= 0, tucse
, mss
;
2425 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2428 if (skb_shinfo(skb
)->tso_size
) {
2429 if (skb_header_cloned(skb
)) {
2430 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2435 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2436 mss
= skb_shinfo(skb
)->tso_size
;
2437 if (skb
->protocol
== ntohs(ETH_P_IP
)) {
2438 skb
->nh
.iph
->tot_len
= 0;
2439 skb
->nh
.iph
->check
= 0;
2441 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2446 cmd_length
= E1000_TXD_CMD_IP
;
2447 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2448 #ifdef NETIF_F_TSO_IPV6
2449 } else if (skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2450 skb
->nh
.ipv6h
->payload_len
= 0;
2452 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2453 &skb
->nh
.ipv6h
->daddr
,
2460 ipcss
= skb
->nh
.raw
- skb
->data
;
2461 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2462 tucss
= skb
->h
.raw
- skb
->data
;
2463 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2466 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2467 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2469 i
= tx_ring
->next_to_use
;
2470 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2471 buffer_info
= &tx_ring
->buffer_info
[i
];
2473 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2474 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2475 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2476 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2477 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2478 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2479 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2480 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2481 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2483 buffer_info
->time_stamp
= jiffies
;
2485 if (++i
== tx_ring
->count
) i
= 0;
2486 tx_ring
->next_to_use
= i
;
2495 static inline boolean_t
2496 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2497 struct sk_buff
*skb
)
2499 struct e1000_context_desc
*context_desc
;
2500 struct e1000_buffer
*buffer_info
;
2504 if (likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2505 css
= skb
->h
.raw
- skb
->data
;
2507 i
= tx_ring
->next_to_use
;
2508 buffer_info
= &tx_ring
->buffer_info
[i
];
2509 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2511 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2512 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2513 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2514 context_desc
->tcp_seg_setup
.data
= 0;
2515 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2517 buffer_info
->time_stamp
= jiffies
;
2519 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2520 tx_ring
->next_to_use
= i
;
2528 #define E1000_MAX_TXD_PWR 12
2529 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2532 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2533 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2534 unsigned int nr_frags
, unsigned int mss
)
2536 struct e1000_buffer
*buffer_info
;
2537 unsigned int len
= skb
->len
;
2538 unsigned int offset
= 0, size
, count
= 0, i
;
2540 len
-= skb
->data_len
;
2542 i
= tx_ring
->next_to_use
;
2545 buffer_info
= &tx_ring
->buffer_info
[i
];
2546 size
= min(len
, max_per_txd
);
2548 /* Workaround for Controller erratum --
2549 * descriptor for non-tso packet in a linear SKB that follows a
2550 * tso gets written back prematurely before the data is fully
2551 * DMA'd to the controller */
2552 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2553 !skb_shinfo(skb
)->tso_size
) {
2554 tx_ring
->last_tx_tso
= 0;
2558 /* Workaround for premature desc write-backs
2559 * in TSO mode. Append 4-byte sentinel desc */
2560 if (unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2563 /* work-around for errata 10 and it applies
2564 * to all controllers in PCI-X mode
2565 * The fix is to make sure that the first descriptor of a
2566 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2568 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2569 (size
> 2015) && count
== 0))
2572 /* Workaround for potential 82544 hang in PCI-X. Avoid
2573 * terminating buffers within evenly-aligned dwords. */
2574 if (unlikely(adapter
->pcix_82544
&&
2575 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2579 buffer_info
->length
= size
;
2581 pci_map_single(adapter
->pdev
,
2585 buffer_info
->time_stamp
= jiffies
;
2590 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2593 for (f
= 0; f
< nr_frags
; f
++) {
2594 struct skb_frag_struct
*frag
;
2596 frag
= &skb_shinfo(skb
)->frags
[f
];
2598 offset
= frag
->page_offset
;
2601 buffer_info
= &tx_ring
->buffer_info
[i
];
2602 size
= min(len
, max_per_txd
);
2604 /* Workaround for premature desc write-backs
2605 * in TSO mode. Append 4-byte sentinel desc */
2606 if (unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2609 /* Workaround for potential 82544 hang in PCI-X.
2610 * Avoid terminating buffers within evenly-aligned
2612 if (unlikely(adapter
->pcix_82544
&&
2613 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2617 buffer_info
->length
= size
;
2619 pci_map_page(adapter
->pdev
,
2624 buffer_info
->time_stamp
= jiffies
;
2629 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2633 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2634 tx_ring
->buffer_info
[i
].skb
= skb
;
2635 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2641 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2642 int tx_flags
, int count
)
2644 struct e1000_tx_desc
*tx_desc
= NULL
;
2645 struct e1000_buffer
*buffer_info
;
2646 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2649 if (likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2650 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2652 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2654 if (likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2655 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2658 if (likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2659 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2660 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2663 if (unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2664 txd_lower
|= E1000_TXD_CMD_VLE
;
2665 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2668 i
= tx_ring
->next_to_use
;
2671 buffer_info
= &tx_ring
->buffer_info
[i
];
2672 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2673 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2674 tx_desc
->lower
.data
=
2675 cpu_to_le32(txd_lower
| buffer_info
->length
);
2676 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2677 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2680 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2682 /* Force memory writes to complete before letting h/w
2683 * know there are new descriptors to fetch. (Only
2684 * applicable for weak-ordered memory model archs,
2685 * such as IA-64). */
2688 tx_ring
->next_to_use
= i
;
2689 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2693 * 82547 workaround to avoid controller hang in half-duplex environment.
2694 * The workaround is to avoid queuing a large packet that would span
2695 * the internal Tx FIFO ring boundary by notifying the stack to resend
2696 * the packet at a later time. This gives the Tx FIFO an opportunity to
2697 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2698 * to the beginning of the Tx FIFO.
2701 #define E1000_FIFO_HDR 0x10
2702 #define E1000_82547_PAD_LEN 0x3E0
2705 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2707 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2708 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2710 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2712 if (adapter
->link_duplex
!= HALF_DUPLEX
)
2713 goto no_fifo_stall_required
;
2715 if (atomic_read(&adapter
->tx_fifo_stall
))
2718 if (skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2719 atomic_set(&adapter
->tx_fifo_stall
, 1);
2723 no_fifo_stall_required
:
2724 adapter
->tx_fifo_head
+= skb_fifo_len
;
2725 if (adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2726 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2730 #define MINIMUM_DHCP_PACKET_SIZE 282
2732 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2734 struct e1000_hw
*hw
= &adapter
->hw
;
2735 uint16_t length
, offset
;
2736 if (vlan_tx_tag_present(skb
)) {
2737 if (!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2738 ( adapter
->hw
.mng_cookie
.status
&
2739 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2742 if (skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) {
2743 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2744 if ((htons(ETH_P_IP
) == eth
->h_proto
)) {
2745 const struct iphdr
*ip
=
2746 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2747 if (IPPROTO_UDP
== ip
->protocol
) {
2748 struct udphdr
*udp
=
2749 (struct udphdr
*)((uint8_t *)ip
+
2751 if (ntohs(udp
->dest
) == 67) {
2752 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2753 length
= skb
->len
- offset
;
2755 return e1000_mng_write_dhcp_info(hw
,
2765 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2767 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2769 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2770 struct e1000_tx_ring
*tx_ring
;
2771 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2772 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2773 unsigned int tx_flags
= 0;
2774 unsigned int len
= skb
->len
;
2775 unsigned long flags
;
2776 unsigned int nr_frags
= 0;
2777 unsigned int mss
= 0;
2781 len
-= skb
->data_len
;
2783 tx_ring
= adapter
->tx_ring
;
2785 if (unlikely(skb
->len
<= 0)) {
2786 dev_kfree_skb_any(skb
);
2787 return NETDEV_TX_OK
;
2791 mss
= skb_shinfo(skb
)->tso_size
;
2792 /* The controller does a simple calculation to
2793 * make sure there is enough room in the FIFO before
2794 * initiating the DMA for each buffer. The calc is:
2795 * 4 = ceil(buffer len/mss). To make sure we don't
2796 * overrun the FIFO, adjust the max buffer len if mss
2800 max_per_txd
= min(mss
<< 2, max_per_txd
);
2801 max_txd_pwr
= fls(max_per_txd
) - 1;
2803 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
2804 * points to just header, pull a few bytes of payload from
2805 * frags into skb->data */
2806 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2807 if (skb
->data_len
&& (hdr_len
== (skb
->len
- skb
->data_len
))) {
2808 switch (adapter
->hw
.mac_type
) {
2809 unsigned int pull_size
;
2813 pull_size
= min((unsigned int)4, skb
->data_len
);
2814 if (!__pskb_pull_tail(skb
, pull_size
)) {
2816 "__pskb_pull_tail failed.\n");
2817 dev_kfree_skb_any(skb
);
2820 len
= skb
->len
- skb
->data_len
;
2829 /* reserve a descriptor for the offload context */
2830 if ((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2834 if (skb
->ip_summed
== CHECKSUM_HW
)
2839 /* Controller Erratum workaround */
2840 if (!skb
->data_len
&& tx_ring
->last_tx_tso
&&
2841 !skb_shinfo(skb
)->tso_size
)
2845 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2847 if (adapter
->pcix_82544
)
2850 /* work-around for errata 10 and it applies to all controllers
2851 * in PCI-X mode, so add one more descriptor to the count
2853 if (unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2857 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2858 for (f
= 0; f
< nr_frags
; f
++)
2859 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2861 if (adapter
->pcix_82544
)
2865 if (adapter
->hw
.tx_pkt_filtering
&&
2866 (adapter
->hw
.mac_type
== e1000_82573
))
2867 e1000_transfer_dhcp_info(adapter
, skb
);
2869 local_irq_save(flags
);
2870 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2871 /* Collision - tell upper layer to requeue */
2872 local_irq_restore(flags
);
2873 return NETDEV_TX_LOCKED
;
2876 /* need: count + 2 desc gap to keep tail from touching
2877 * head, otherwise try next time */
2878 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2879 netif_stop_queue(netdev
);
2880 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2881 return NETDEV_TX_BUSY
;
2884 if (unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2885 if (unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2886 netif_stop_queue(netdev
);
2887 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2888 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2889 return NETDEV_TX_BUSY
;
2893 if (unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2894 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2895 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2898 first
= tx_ring
->next_to_use
;
2900 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2902 dev_kfree_skb_any(skb
);
2903 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2904 return NETDEV_TX_OK
;
2908 tx_ring
->last_tx_tso
= 1;
2909 tx_flags
|= E1000_TX_FLAGS_TSO
;
2910 } else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2911 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2913 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2914 * 82571 hardware supports TSO capabilities for IPv6 as well...
2915 * no longer assume, we must. */
2916 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2917 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2919 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2920 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2921 max_per_txd
, nr_frags
, mss
));
2923 netdev
->trans_start
= jiffies
;
2925 /* Make sure there is space in the ring for the next send. */
2926 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2927 netif_stop_queue(netdev
);
2929 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2930 return NETDEV_TX_OK
;
2934 * e1000_tx_timeout - Respond to a Tx Hang
2935 * @netdev: network interface device structure
2939 e1000_tx_timeout(struct net_device
*netdev
)
2941 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2943 /* Do the reset outside of interrupt context */
2944 adapter
->tx_timeout_count
++;
2945 schedule_work(&adapter
->reset_task
);
2949 e1000_reset_task(struct net_device
*netdev
)
2951 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2953 e1000_down(adapter
);
2958 * e1000_get_stats - Get System Network Statistics
2959 * @netdev: network interface device structure
2961 * Returns the address of the device statistics structure.
2962 * The statistics are actually updated from the timer callback.
2965 static struct net_device_stats
*
2966 e1000_get_stats(struct net_device
*netdev
)
2968 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2970 /* only return the current stats */
2971 return &adapter
->net_stats
;
2975 * e1000_change_mtu - Change the Maximum Transfer Unit
2976 * @netdev: network interface device structure
2977 * @new_mtu: new value for maximum frame size
2979 * Returns 0 on success, negative on failure
2983 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2985 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2986 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2987 uint16_t eeprom_data
= 0;
2989 if ((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2990 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2991 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2995 /* Adapter-specific max frame size limits. */
2996 switch (adapter
->hw
.mac_type
) {
2997 case e1000_82542_rev2_0
:
2998 case e1000_82542_rev2_1
:
2999 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3000 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported.\n");
3005 /* only enable jumbo frames if ASPM is disabled completely
3006 * this means both bits must be zero in 0x1A bits 3:2 */
3007 e1000_read_eeprom(&adapter
->hw
, EEPROM_INIT_3GIO_3
, 1,
3009 if (eeprom_data
& EEPROM_WORD1A_ASPM_MASK
) {
3010 if (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
3012 "Jumbo Frames not supported.\n");
3017 /* fall through to get support */
3020 case e1000_80003es2lan
:
3021 #define MAX_STD_JUMBO_FRAME_SIZE 9234
3022 if (max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
3023 DPRINTK(PROBE
, ERR
, "MTU > 9216 not supported.\n");
3028 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3033 if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3034 adapter
->rx_buffer_len
= max_frame
;
3035 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
3037 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
3038 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
3039 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
3043 if(max_frame
<= E1000_RXBUFFER_2048
)
3044 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
3045 else if(max_frame
<= E1000_RXBUFFER_4096
)
3046 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
3047 else if(max_frame
<= E1000_RXBUFFER_8192
)
3048 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
3049 else if(max_frame
<= E1000_RXBUFFER_16384
)
3050 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
3054 netdev
->mtu
= new_mtu
;
3056 if (netif_running(netdev
)) {
3057 e1000_down(adapter
);
3061 adapter
->hw
.max_frame_size
= max_frame
;
3067 * e1000_update_stats - Update the board statistics counters
3068 * @adapter: board private structure
3072 e1000_update_stats(struct e1000_adapter
*adapter
)
3074 struct e1000_hw
*hw
= &adapter
->hw
;
3075 unsigned long flags
;
3078 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3080 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3082 /* these counters are modified from e1000_adjust_tbi_stats,
3083 * called from the interrupt context, so they must only
3084 * be written while holding adapter->stats_lock
3087 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
3088 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
3089 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
3090 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
3091 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
3092 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
3093 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
3094 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
3095 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
3096 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
3097 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
3098 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
3099 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
3101 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
3102 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
3103 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
3104 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
3105 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
3106 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
3107 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
3108 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
3109 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
3110 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
3111 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
3112 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
3113 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
3114 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
3115 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
3116 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
3117 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
3118 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
3119 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
3120 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
3121 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
3122 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
3123 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
3124 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
3125 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
3126 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
3127 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
3128 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
3129 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
3130 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
3131 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
3132 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
3133 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
3134 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
3136 /* used for adaptive IFS */
3138 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3139 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3140 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3141 adapter
->stats
.colc
+= hw
->collision_delta
;
3143 if (hw
->mac_type
>= e1000_82543
) {
3144 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3145 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3146 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3147 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3148 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3149 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3151 if (hw
->mac_type
> e1000_82547_rev_2
) {
3152 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3153 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3154 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3155 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3156 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3157 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3158 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3159 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3160 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3163 /* Fill out the OS statistics structure */
3165 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3166 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3167 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3168 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3169 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3170 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3174 /* RLEC on some newer hardware can be incorrect so build
3175 * our own version based on RUC and ROC */
3176 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3177 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3178 adapter
->stats
.ruc
+ adapter
->stats
.roc
+
3179 adapter
->stats
.cexterr
;
3180 adapter
->net_stats
.rx_dropped
= 0;
3181 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.ruc
+
3183 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3184 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3185 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3189 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3190 adapter
->stats
.latecol
;
3191 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3192 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3193 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3195 /* Tx Dropped needs to be maintained elsewhere */
3199 if (hw
->media_type
== e1000_media_type_copper
) {
3200 if ((adapter
->link_speed
== SPEED_1000
) &&
3201 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3202 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3203 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3206 if ((hw
->mac_type
<= e1000_82546
) &&
3207 (hw
->phy_type
== e1000_phy_m88
) &&
3208 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3209 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3212 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3216 * e1000_intr - Interrupt Handler
3217 * @irq: interrupt number
3218 * @data: pointer to a network interface device structure
3219 * @pt_regs: CPU registers structure
3223 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3225 struct net_device
*netdev
= data
;
3226 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3227 struct e1000_hw
*hw
= &adapter
->hw
;
3228 uint32_t rctl
, icr
= E1000_READ_REG(hw
, ICR
);
3229 #ifndef CONFIG_E1000_NAPI
3232 /* Interrupt Auto-Mask...upon reading ICR,
3233 * interrupts are masked. No need for the
3234 * IMC write, but it does mean we should
3235 * account for it ASAP. */
3236 if (likely(hw
->mac_type
>= e1000_82571
))
3237 atomic_inc(&adapter
->irq_sem
);
3240 if (unlikely(!icr
)) {
3241 #ifdef CONFIG_E1000_NAPI
3242 if (hw
->mac_type
>= e1000_82571
)
3243 e1000_irq_enable(adapter
);
3245 return IRQ_NONE
; /* Not our interrupt */
3248 if (unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3249 hw
->get_link_status
= 1;
3250 /* 80003ES2LAN workaround--
3251 * For packet buffer work-around on link down event;
3252 * disable receives here in the ISR and
3253 * reset adapter in watchdog
3255 if (netif_carrier_ok(netdev
) &&
3256 (adapter
->hw
.mac_type
== e1000_80003es2lan
)) {
3257 /* disable receives */
3258 rctl
= E1000_READ_REG(hw
, RCTL
);
3259 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
3261 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3264 #ifdef CONFIG_E1000_NAPI
3265 if (unlikely(hw
->mac_type
< e1000_82571
)) {
3266 atomic_inc(&adapter
->irq_sem
);
3267 E1000_WRITE_REG(hw
, IMC
, ~0);
3268 E1000_WRITE_FLUSH(hw
);
3270 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3271 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3273 e1000_irq_enable(adapter
);
3275 /* Writing IMC and IMS is needed for 82547.
3276 * Due to Hub Link bus being occupied, an interrupt
3277 * de-assertion message is not able to be sent.
3278 * When an interrupt assertion message is generated later,
3279 * two messages are re-ordered and sent out.
3280 * That causes APIC to think 82547 is in de-assertion
3281 * state, while 82547 is in assertion state, resulting
3282 * in dead lock. Writing IMC forces 82547 into
3283 * de-assertion state.
3285 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
) {
3286 atomic_inc(&adapter
->irq_sem
);
3287 E1000_WRITE_REG(hw
, IMC
, ~0);
3290 for (i
= 0; i
< E1000_MAX_INTR
; i
++)
3291 if (unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3292 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3295 if (hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3296 e1000_irq_enable(adapter
);
3303 #ifdef CONFIG_E1000_NAPI
3305 * e1000_clean - NAPI Rx polling callback
3306 * @adapter: board private structure
3310 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3312 struct e1000_adapter
*adapter
;
3313 int work_to_do
= min(*budget
, poll_dev
->quota
);
3314 int tx_cleaned
= 0, i
= 0, work_done
= 0;
3316 /* Must NOT use netdev_priv macro here. */
3317 adapter
= poll_dev
->priv
;
3319 /* Keep link state information with original netdev */
3320 if (!netif_carrier_ok(adapter
->netdev
))
3323 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3325 if (unlikely(i
== adapter
->num_rx_queues
))
3329 if (likely(adapter
->num_tx_queues
== 1)) {
3330 /* e1000_clean is called per-cpu. This lock protects
3331 * tx_ring[0] from being cleaned by multiple cpus
3332 * simultaneously. A failure obtaining the lock means
3333 * tx_ring[0] is currently being cleaned anyway. */
3334 if (spin_trylock(&adapter
->tx_queue_lock
)) {
3335 tx_cleaned
= e1000_clean_tx_irq(adapter
,
3336 &adapter
->tx_ring
[0]);
3337 spin_unlock(&adapter
->tx_queue_lock
);
3340 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3342 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3343 &work_done
, work_to_do
);
3345 *budget
-= work_done
;
3346 poll_dev
->quota
-= work_done
;
3348 /* If no Tx and not enough Rx work done, exit the polling mode */
3349 if ((!tx_cleaned
&& (work_done
== 0)) ||
3350 !netif_running(adapter
->netdev
)) {
3352 netif_rx_complete(poll_dev
);
3353 e1000_irq_enable(adapter
);
3362 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3363 * @adapter: board private structure
3367 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3368 struct e1000_tx_ring
*tx_ring
)
3370 struct net_device
*netdev
= adapter
->netdev
;
3371 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3372 struct e1000_buffer
*buffer_info
;
3373 unsigned int i
, eop
;
3374 #ifdef CONFIG_E1000_NAPI
3375 unsigned int count
= 0;
3377 boolean_t cleaned
= FALSE
;
3379 i
= tx_ring
->next_to_clean
;
3380 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3381 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3383 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3384 for (cleaned
= FALSE
; !cleaned
; ) {
3385 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3386 buffer_info
= &tx_ring
->buffer_info
[i
];
3387 cleaned
= (i
== eop
);
3389 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
3390 memset(tx_desc
, 0, sizeof(struct e1000_tx_desc
));
3392 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
3396 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3397 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3398 #ifdef CONFIG_E1000_NAPI
3399 #define E1000_TX_WEIGHT 64
3400 /* weight of a sort for tx, to avoid endless transmit cleanup */
3401 if (count
++ == E1000_TX_WEIGHT
) break;
3405 tx_ring
->next_to_clean
= i
;
3407 spin_lock(&tx_ring
->tx_lock
);
3409 if (unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3410 netif_carrier_ok(netdev
)))
3411 netif_wake_queue(netdev
);
3413 spin_unlock(&tx_ring
->tx_lock
);
3415 if (adapter
->detect_tx_hung
) {
3416 /* Detect a transmit hang in hardware, this serializes the
3417 * check with the clearing of time_stamp and movement of i */
3418 adapter
->detect_tx_hung
= FALSE
;
3419 if (tx_ring
->buffer_info
[eop
].dma
&&
3420 time_after(jiffies
, tx_ring
->buffer_info
[eop
].time_stamp
+
3421 (adapter
->tx_timeout_factor
* HZ
))
3422 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3423 E1000_STATUS_TXOFF
)) {
3425 /* detected Tx unit hang */
3426 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3430 " next_to_use <%x>\n"
3431 " next_to_clean <%x>\n"
3432 "buffer_info[next_to_clean]\n"
3433 " time_stamp <%lx>\n"
3434 " next_to_watch <%x>\n"
3436 " next_to_watch.status <%x>\n",
3437 (unsigned long)((tx_ring
- adapter
->tx_ring
) /
3438 sizeof(struct e1000_tx_ring
)),
3439 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3440 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3441 tx_ring
->next_to_use
,
3442 tx_ring
->next_to_clean
,
3443 tx_ring
->buffer_info
[eop
].time_stamp
,
3446 eop_desc
->upper
.fields
.status
);
3447 netif_stop_queue(netdev
);
3454 * e1000_rx_checksum - Receive Checksum Offload for 82543
3455 * @adapter: board private structure
3456 * @status_err: receive descriptor status and error fields
3457 * @csum: receive descriptor csum field
3458 * @sk_buff: socket buffer with received data
3462 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3463 uint32_t status_err
, uint32_t csum
,
3464 struct sk_buff
*skb
)
3466 uint16_t status
= (uint16_t)status_err
;
3467 uint8_t errors
= (uint8_t)(status_err
>> 24);
3468 skb
->ip_summed
= CHECKSUM_NONE
;
3470 /* 82543 or newer only */
3471 if (unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3472 /* Ignore Checksum bit is set */
3473 if (unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3474 /* TCP/UDP checksum error bit is set */
3475 if (unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3476 /* let the stack verify checksum errors */
3477 adapter
->hw_csum_err
++;
3480 /* TCP/UDP Checksum has not been calculated */
3481 if (adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3482 if (!(status
& E1000_RXD_STAT_TCPCS
))
3485 if (!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3488 /* It must be a TCP or UDP packet with a valid checksum */
3489 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3490 /* TCP checksum is good */
3491 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3492 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3493 /* IP fragment with UDP payload */
3494 /* Hardware complements the payload checksum, so we undo it
3495 * and then put the value in host order for further stack use.
3497 csum
= ntohl(csum
^ 0xFFFF);
3499 skb
->ip_summed
= CHECKSUM_HW
;
3501 adapter
->hw_csum_good
++;
3505 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3506 * @adapter: board private structure
3510 #ifdef CONFIG_E1000_NAPI
3511 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3512 struct e1000_rx_ring
*rx_ring
,
3513 int *work_done
, int work_to_do
)
3515 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3516 struct e1000_rx_ring
*rx_ring
)
3519 struct net_device
*netdev
= adapter
->netdev
;
3520 struct pci_dev
*pdev
= adapter
->pdev
;
3521 struct e1000_rx_desc
*rx_desc
, *next_rxd
;
3522 struct e1000_buffer
*buffer_info
, *next_buffer
;
3523 unsigned long flags
;
3527 int cleaned_count
= 0;
3528 boolean_t cleaned
= FALSE
;
3530 i
= rx_ring
->next_to_clean
;
3531 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3532 buffer_info
= &rx_ring
->buffer_info
[i
];
3534 while (rx_desc
->status
& E1000_RXD_STAT_DD
) {
3535 struct sk_buff
*skb
, *next_skb
;
3537 #ifdef CONFIG_E1000_NAPI
3538 if (*work_done
>= work_to_do
)
3542 status
= rx_desc
->status
;
3543 skb
= buffer_info
->skb
;
3544 buffer_info
->skb
= NULL
;
3546 prefetch(skb
->data
- NET_IP_ALIGN
);
3548 if (++i
== rx_ring
->count
) i
= 0;
3549 next_rxd
= E1000_RX_DESC(*rx_ring
, i
);
3552 next_buffer
= &rx_ring
->buffer_info
[i
];
3553 next_skb
= next_buffer
->skb
;
3554 prefetch(next_skb
->data
- NET_IP_ALIGN
);
3558 pci_unmap_single(pdev
,
3560 buffer_info
->length
,
3561 PCI_DMA_FROMDEVICE
);
3563 length
= le16_to_cpu(rx_desc
->length
);
3565 if (unlikely(!(status
& E1000_RXD_STAT_EOP
))) {
3566 /* All receives must fit into a single buffer */
3567 E1000_DBG("%s: Receive packet consumed multiple"
3568 " buffers\n", netdev
->name
);
3569 dev_kfree_skb_irq(skb
);
3573 if (unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3574 last_byte
= *(skb
->data
+ length
- 1);
3575 if (TBI_ACCEPT(&adapter
->hw
, status
,
3576 rx_desc
->errors
, length
, last_byte
)) {
3577 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3578 e1000_tbi_adjust_stats(&adapter
->hw
,
3581 spin_unlock_irqrestore(&adapter
->stats_lock
,
3585 dev_kfree_skb_irq(skb
);
3590 /* code added for copybreak, this should improve
3591 * performance for small packets with large amounts
3592 * of reassembly being done in the stack */
3593 #define E1000_CB_LENGTH 256
3594 if (length
< E1000_CB_LENGTH
) {
3595 struct sk_buff
*new_skb
=
3596 dev_alloc_skb(length
+ NET_IP_ALIGN
);
3598 skb_reserve(new_skb
, NET_IP_ALIGN
);
3599 new_skb
->dev
= netdev
;
3600 memcpy(new_skb
->data
- NET_IP_ALIGN
,
3601 skb
->data
- NET_IP_ALIGN
,
3602 length
+ NET_IP_ALIGN
);
3603 /* save the skb in buffer_info as good */
3604 buffer_info
->skb
= skb
;
3606 skb_put(skb
, length
);
3609 skb_put(skb
, length
);
3611 /* end copybreak code */
3613 /* Receive Checksum Offload */
3614 e1000_rx_checksum(adapter
,
3615 (uint32_t)(status
) |
3616 ((uint32_t)(rx_desc
->errors
) << 24),
3617 rx_desc
->csum
, skb
);
3619 skb
->protocol
= eth_type_trans(skb
, netdev
);
3620 #ifdef CONFIG_E1000_NAPI
3621 if (unlikely(adapter
->vlgrp
&&
3622 (status
& E1000_RXD_STAT_VP
))) {
3623 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3624 le16_to_cpu(rx_desc
->special
) &
3625 E1000_RXD_SPC_VLAN_MASK
);
3627 netif_receive_skb(skb
);
3629 #else /* CONFIG_E1000_NAPI */
3630 if (unlikely(adapter
->vlgrp
&&
3631 (status
& E1000_RXD_STAT_VP
))) {
3632 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3633 le16_to_cpu(rx_desc
->special
) &
3634 E1000_RXD_SPC_VLAN_MASK
);
3638 #endif /* CONFIG_E1000_NAPI */
3639 netdev
->last_rx
= jiffies
;
3642 rx_desc
->status
= 0;
3644 /* return some buffers to hardware, one at a time is too slow */
3645 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3646 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3650 /* use prefetched values */
3652 buffer_info
= next_buffer
;
3654 rx_ring
->next_to_clean
= i
;
3656 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3658 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3664 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3665 * @adapter: board private structure
3669 #ifdef CONFIG_E1000_NAPI
3670 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3671 struct e1000_rx_ring
*rx_ring
,
3672 int *work_done
, int work_to_do
)
3674 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3675 struct e1000_rx_ring
*rx_ring
)
3678 union e1000_rx_desc_packet_split
*rx_desc
, *next_rxd
;
3679 struct net_device
*netdev
= adapter
->netdev
;
3680 struct pci_dev
*pdev
= adapter
->pdev
;
3681 struct e1000_buffer
*buffer_info
, *next_buffer
;
3682 struct e1000_ps_page
*ps_page
;
3683 struct e1000_ps_page_dma
*ps_page_dma
;
3684 struct sk_buff
*skb
, *next_skb
;
3686 uint32_t length
, staterr
;
3687 int cleaned_count
= 0;
3688 boolean_t cleaned
= FALSE
;
3690 i
= rx_ring
->next_to_clean
;
3691 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3692 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3694 while (staterr
& E1000_RXD_STAT_DD
) {
3695 buffer_info
= &rx_ring
->buffer_info
[i
];
3696 ps_page
= &rx_ring
->ps_page
[i
];
3697 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3698 #ifdef CONFIG_E1000_NAPI
3699 if (unlikely(*work_done
>= work_to_do
))
3703 skb
= buffer_info
->skb
;
3705 /* in the packet split case this is header only */
3706 prefetch(skb
->data
- NET_IP_ALIGN
);
3708 if (++i
== rx_ring
->count
) i
= 0;
3709 next_rxd
= E1000_RX_DESC_PS(*rx_ring
, i
);
3712 next_buffer
= &rx_ring
->buffer_info
[i
];
3713 next_skb
= next_buffer
->skb
;
3714 prefetch(next_skb
->data
- NET_IP_ALIGN
);
3718 pci_unmap_single(pdev
, buffer_info
->dma
,
3719 buffer_info
->length
,
3720 PCI_DMA_FROMDEVICE
);
3722 if (unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3723 E1000_DBG("%s: Packet Split buffers didn't pick up"
3724 " the full packet\n", netdev
->name
);
3725 dev_kfree_skb_irq(skb
);
3729 if (unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3730 dev_kfree_skb_irq(skb
);
3734 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3736 if (unlikely(!length
)) {
3737 E1000_DBG("%s: Last part of the packet spanning"
3738 " multiple descriptors\n", netdev
->name
);
3739 dev_kfree_skb_irq(skb
);
3744 skb_put(skb
, length
);
3747 /* this looks ugly, but it seems compiler issues make it
3748 more efficient than reusing j */
3749 int l1
= le16_to_cpu(rx_desc
->wb
.upper
.length
[0]);
3751 /* page alloc/put takes too long and effects small packet
3752 * throughput, so unsplit small packets and save the alloc/put*/
3753 if (l1
&& ((length
+ l1
) < E1000_CB_LENGTH
)) {
3755 /* there is no documentation about how to call
3756 * kmap_atomic, so we can't hold the mapping
3758 pci_dma_sync_single_for_cpu(pdev
,
3759 ps_page_dma
->ps_page_dma
[0],
3761 PCI_DMA_FROMDEVICE
);
3762 vaddr
= kmap_atomic(ps_page
->ps_page
[0],
3763 KM_SKB_DATA_SOFTIRQ
);
3764 memcpy(skb
->tail
, vaddr
, l1
);
3765 kunmap_atomic(vaddr
, KM_SKB_DATA_SOFTIRQ
);
3766 pci_dma_sync_single_for_device(pdev
,
3767 ps_page_dma
->ps_page_dma
[0],
3768 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3775 for (j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3776 if (!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3778 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3779 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3780 ps_page_dma
->ps_page_dma
[j
] = 0;
3781 skb_fill_page_desc(skb
, j
, ps_page
->ps_page
[j
], 0,
3783 ps_page
->ps_page
[j
] = NULL
;
3785 skb
->data_len
+= length
;
3789 e1000_rx_checksum(adapter
, staterr
,
3790 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3791 skb
->protocol
= eth_type_trans(skb
, netdev
);
3793 if (likely(rx_desc
->wb
.upper
.header_status
&
3794 E1000_RXDPS_HDRSTAT_HDRSP
))
3795 adapter
->rx_hdr_split
++;
3796 #ifdef CONFIG_E1000_NAPI
3797 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3798 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3799 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3800 E1000_RXD_SPC_VLAN_MASK
);
3802 netif_receive_skb(skb
);
3804 #else /* CONFIG_E1000_NAPI */
3805 if (unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3806 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3807 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3808 E1000_RXD_SPC_VLAN_MASK
);
3812 #endif /* CONFIG_E1000_NAPI */
3813 netdev
->last_rx
= jiffies
;
3816 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3817 buffer_info
->skb
= NULL
;
3819 /* return some buffers to hardware, one at a time is too slow */
3820 if (unlikely(cleaned_count
>= E1000_RX_BUFFER_WRITE
)) {
3821 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3825 /* use prefetched values */
3827 buffer_info
= next_buffer
;
3829 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3831 rx_ring
->next_to_clean
= i
;
3833 cleaned_count
= E1000_DESC_UNUSED(rx_ring
);
3835 adapter
->alloc_rx_buf(adapter
, rx_ring
, cleaned_count
);
3841 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3842 * @adapter: address of board private structure
3846 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3847 struct e1000_rx_ring
*rx_ring
,
3850 struct net_device
*netdev
= adapter
->netdev
;
3851 struct pci_dev
*pdev
= adapter
->pdev
;
3852 struct e1000_rx_desc
*rx_desc
;
3853 struct e1000_buffer
*buffer_info
;
3854 struct sk_buff
*skb
;
3856 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3858 i
= rx_ring
->next_to_use
;
3859 buffer_info
= &rx_ring
->buffer_info
[i
];
3861 while (cleaned_count
--) {
3862 if (!(skb
= buffer_info
->skb
))
3863 skb
= dev_alloc_skb(bufsz
);
3869 if (unlikely(!skb
)) {
3870 /* Better luck next round */
3871 adapter
->alloc_rx_buff_failed
++;
3875 /* Fix for errata 23, can't cross 64kB boundary */
3876 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3877 struct sk_buff
*oldskb
= skb
;
3878 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3879 "at %p\n", bufsz
, skb
->data
);
3880 /* Try again, without freeing the previous */
3881 skb
= dev_alloc_skb(bufsz
);
3882 /* Failed allocation, critical failure */
3884 dev_kfree_skb(oldskb
);
3888 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3891 dev_kfree_skb(oldskb
);
3892 break; /* while !buffer_info->skb */
3894 /* Use new allocation */
3895 dev_kfree_skb(oldskb
);
3898 /* Make buffer alignment 2 beyond a 16 byte boundary
3899 * this will result in a 16 byte aligned IP header after
3900 * the 14 byte MAC header is removed
3902 skb_reserve(skb
, NET_IP_ALIGN
);
3906 buffer_info
->skb
= skb
;
3907 buffer_info
->length
= adapter
->rx_buffer_len
;
3909 buffer_info
->dma
= pci_map_single(pdev
,
3911 adapter
->rx_buffer_len
,
3912 PCI_DMA_FROMDEVICE
);
3914 /* Fix for errata 23, can't cross 64kB boundary */
3915 if (!e1000_check_64k_bound(adapter
,
3916 (void *)(unsigned long)buffer_info
->dma
,
3917 adapter
->rx_buffer_len
)) {
3918 DPRINTK(RX_ERR
, ERR
,
3919 "dma align check failed: %u bytes at %p\n",
3920 adapter
->rx_buffer_len
,
3921 (void *)(unsigned long)buffer_info
->dma
);
3923 buffer_info
->skb
= NULL
;
3925 pci_unmap_single(pdev
, buffer_info
->dma
,
3926 adapter
->rx_buffer_len
,
3927 PCI_DMA_FROMDEVICE
);
3929 break; /* while !buffer_info->skb */
3931 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3932 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3934 if (unlikely(++i
== rx_ring
->count
))
3936 buffer_info
= &rx_ring
->buffer_info
[i
];
3939 if (likely(rx_ring
->next_to_use
!= i
)) {
3940 rx_ring
->next_to_use
= i
;
3941 if (unlikely(i
-- == 0))
3942 i
= (rx_ring
->count
- 1);
3944 /* Force memory writes to complete before letting h/w
3945 * know there are new descriptors to fetch. (Only
3946 * applicable for weak-ordered memory model archs,
3947 * such as IA-64). */
3949 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3954 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3955 * @adapter: address of board private structure
3959 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3960 struct e1000_rx_ring
*rx_ring
,
3963 struct net_device
*netdev
= adapter
->netdev
;
3964 struct pci_dev
*pdev
= adapter
->pdev
;
3965 union e1000_rx_desc_packet_split
*rx_desc
;
3966 struct e1000_buffer
*buffer_info
;
3967 struct e1000_ps_page
*ps_page
;
3968 struct e1000_ps_page_dma
*ps_page_dma
;
3969 struct sk_buff
*skb
;
3972 i
= rx_ring
->next_to_use
;
3973 buffer_info
= &rx_ring
->buffer_info
[i
];
3974 ps_page
= &rx_ring
->ps_page
[i
];
3975 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3977 while (cleaned_count
--) {
3978 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3980 for (j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3981 if (j
< adapter
->rx_ps_pages
) {
3982 if (likely(!ps_page
->ps_page
[j
])) {
3983 ps_page
->ps_page
[j
] =
3984 alloc_page(GFP_ATOMIC
);
3985 if (unlikely(!ps_page
->ps_page
[j
])) {
3986 adapter
->alloc_rx_buff_failed
++;
3989 ps_page_dma
->ps_page_dma
[j
] =
3991 ps_page
->ps_page
[j
],
3993 PCI_DMA_FROMDEVICE
);
3995 /* Refresh the desc even if buffer_addrs didn't
3996 * change because each write-back erases
3999 rx_desc
->read
.buffer_addr
[j
+1] =
4000 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
4002 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
4005 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
4007 if (unlikely(!skb
)) {
4008 adapter
->alloc_rx_buff_failed
++;
4012 /* Make buffer alignment 2 beyond a 16 byte boundary
4013 * this will result in a 16 byte aligned IP header after
4014 * the 14 byte MAC header is removed
4016 skb_reserve(skb
, NET_IP_ALIGN
);
4020 buffer_info
->skb
= skb
;
4021 buffer_info
->length
= adapter
->rx_ps_bsize0
;
4022 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
4023 adapter
->rx_ps_bsize0
,
4024 PCI_DMA_FROMDEVICE
);
4026 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
4028 if (unlikely(++i
== rx_ring
->count
)) i
= 0;
4029 buffer_info
= &rx_ring
->buffer_info
[i
];
4030 ps_page
= &rx_ring
->ps_page
[i
];
4031 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
4035 if (likely(rx_ring
->next_to_use
!= i
)) {
4036 rx_ring
->next_to_use
= i
;
4037 if (unlikely(i
-- == 0)) i
= (rx_ring
->count
- 1);
4039 /* Force memory writes to complete before letting h/w
4040 * know there are new descriptors to fetch. (Only
4041 * applicable for weak-ordered memory model archs,
4042 * such as IA-64). */
4044 /* Hardware increments by 16 bytes, but packet split
4045 * descriptors are 32 bytes...so we increment tail
4048 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
4053 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4058 e1000_smartspeed(struct e1000_adapter
*adapter
)
4060 uint16_t phy_status
;
4063 if ((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
4064 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
4067 if (adapter
->smartspeed
== 0) {
4068 /* If Master/Slave config fault is asserted twice,
4069 * we assume back-to-back */
4070 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4071 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4072 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
4073 if (!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
4074 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4075 if (phy_ctrl
& CR_1000T_MS_ENABLE
) {
4076 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
4077 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
4079 adapter
->smartspeed
++;
4080 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4081 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
4083 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4084 MII_CR_RESTART_AUTO_NEG
);
4085 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
4090 } else if (adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
4091 /* If still no link, perhaps using 2/3 pair cable */
4092 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
4093 phy_ctrl
|= CR_1000T_MS_ENABLE
;
4094 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
4095 if (!e1000_phy_setup_autoneg(&adapter
->hw
) &&
4096 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
4097 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
4098 MII_CR_RESTART_AUTO_NEG
);
4099 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
4102 /* Restart process after E1000_SMARTSPEED_MAX iterations */
4103 if (adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
4104 adapter
->smartspeed
= 0;
4115 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4121 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
4135 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
4137 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4138 struct mii_ioctl_data
*data
= if_mii(ifr
);
4142 unsigned long flags
;
4144 if (adapter
->hw
.media_type
!= e1000_media_type_copper
)
4149 data
->phy_id
= adapter
->hw
.phy_addr
;
4152 if (!capable(CAP_NET_ADMIN
))
4154 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4155 if (e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
4157 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4160 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4163 if (!capable(CAP_NET_ADMIN
))
4165 if (data
->reg_num
& ~(0x1F))
4167 mii_reg
= data
->val_in
;
4168 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
4169 if (e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
4171 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4174 if (adapter
->hw
.phy_type
== e1000_media_type_copper
) {
4175 switch (data
->reg_num
) {
4177 if (mii_reg
& MII_CR_POWER_DOWN
)
4179 if (mii_reg
& MII_CR_AUTO_NEG_EN
) {
4180 adapter
->hw
.autoneg
= 1;
4181 adapter
->hw
.autoneg_advertised
= 0x2F;
4184 spddplx
= SPEED_1000
;
4185 else if (mii_reg
& 0x2000)
4186 spddplx
= SPEED_100
;
4189 spddplx
+= (mii_reg
& 0x100)
4192 retval
= e1000_set_spd_dplx(adapter
,
4195 spin_unlock_irqrestore(
4196 &adapter
->stats_lock
,
4201 if (netif_running(adapter
->netdev
)) {
4202 e1000_down(adapter
);
4205 e1000_reset(adapter
);
4207 case M88E1000_PHY_SPEC_CTRL
:
4208 case M88E1000_EXT_PHY_SPEC_CTRL
:
4209 if (e1000_phy_reset(&adapter
->hw
)) {
4210 spin_unlock_irqrestore(
4211 &adapter
->stats_lock
, flags
);
4217 switch (data
->reg_num
) {
4219 if (mii_reg
& MII_CR_POWER_DOWN
)
4221 if (netif_running(adapter
->netdev
)) {
4222 e1000_down(adapter
);
4225 e1000_reset(adapter
);
4229 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4234 return E1000_SUCCESS
;
4238 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4240 struct e1000_adapter
*adapter
= hw
->back
;
4241 int ret_val
= pci_set_mwi(adapter
->pdev
);
4244 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4248 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4250 struct e1000_adapter
*adapter
= hw
->back
;
4252 pci_clear_mwi(adapter
->pdev
);
4256 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4258 struct e1000_adapter
*adapter
= hw
->back
;
4260 pci_read_config_word(adapter
->pdev
, reg
, value
);
4264 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4266 struct e1000_adapter
*adapter
= hw
->back
;
4268 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4272 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4278 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4284 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4286 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4287 uint32_t ctrl
, rctl
;
4289 e1000_irq_disable(adapter
);
4290 adapter
->vlgrp
= grp
;
4293 /* enable VLAN tag insert/strip */
4294 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4295 ctrl
|= E1000_CTRL_VME
;
4296 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4298 /* enable VLAN receive filtering */
4299 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4300 rctl
|= E1000_RCTL_VFE
;
4301 rctl
&= ~E1000_RCTL_CFIEN
;
4302 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4303 e1000_update_mng_vlan(adapter
);
4305 /* disable VLAN tag insert/strip */
4306 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4307 ctrl
&= ~E1000_CTRL_VME
;
4308 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4310 /* disable VLAN filtering */
4311 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4312 rctl
&= ~E1000_RCTL_VFE
;
4313 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4314 if (adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4315 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4316 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4320 e1000_irq_enable(adapter
);
4324 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4326 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4327 uint32_t vfta
, index
;
4329 if ((adapter
->hw
.mng_cookie
.status
&
4330 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4331 (vid
== adapter
->mng_vlan_id
))
4333 /* add VID to filter table */
4334 index
= (vid
>> 5) & 0x7F;
4335 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4336 vfta
|= (1 << (vid
& 0x1F));
4337 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4341 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4343 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4344 uint32_t vfta
, index
;
4346 e1000_irq_disable(adapter
);
4349 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4351 e1000_irq_enable(adapter
);
4353 if ((adapter
->hw
.mng_cookie
.status
&
4354 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4355 (vid
== adapter
->mng_vlan_id
)) {
4356 /* release control to f/w */
4357 e1000_release_hw_control(adapter
);
4361 /* remove VID from filter table */
4362 index
= (vid
>> 5) & 0x7F;
4363 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4364 vfta
&= ~(1 << (vid
& 0x1F));
4365 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4369 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4371 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4373 if (adapter
->vlgrp
) {
4375 for (vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4376 if (!adapter
->vlgrp
->vlan_devices
[vid
])
4378 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4384 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4386 adapter
->hw
.autoneg
= 0;
4388 /* Fiber NICs only allow 1000 gbps Full duplex */
4389 if ((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4390 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4391 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4396 case SPEED_10
+ DUPLEX_HALF
:
4397 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4399 case SPEED_10
+ DUPLEX_FULL
:
4400 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4402 case SPEED_100
+ DUPLEX_HALF
:
4403 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4405 case SPEED_100
+ DUPLEX_FULL
:
4406 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4408 case SPEED_1000
+ DUPLEX_FULL
:
4409 adapter
->hw
.autoneg
= 1;
4410 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4412 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4414 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4421 /* Save/restore 16 or 64 dwords of PCI config space depending on which
4422 * bus we're on (PCI(X) vs. PCI-E)
4424 #define PCIE_CONFIG_SPACE_LEN 256
4425 #define PCI_CONFIG_SPACE_LEN 64
4427 e1000_pci_save_state(struct e1000_adapter
*adapter
)
4429 struct pci_dev
*dev
= adapter
->pdev
;
4433 if (adapter
->hw
.mac_type
>= e1000_82571
)
4434 size
= PCIE_CONFIG_SPACE_LEN
;
4436 size
= PCI_CONFIG_SPACE_LEN
;
4438 WARN_ON(adapter
->config_space
!= NULL
);
4440 adapter
->config_space
= kmalloc(size
, GFP_KERNEL
);
4441 if (!adapter
->config_space
) {
4442 DPRINTK(PROBE
, ERR
, "unable to allocate %d bytes\n", size
);
4445 for (i
= 0; i
< (size
/ 4); i
++)
4446 pci_read_config_dword(dev
, i
* 4, &adapter
->config_space
[i
]);
4451 e1000_pci_restore_state(struct e1000_adapter
*adapter
)
4453 struct pci_dev
*dev
= adapter
->pdev
;
4457 if (adapter
->config_space
== NULL
)
4460 if (adapter
->hw
.mac_type
>= e1000_82571
)
4461 size
= PCIE_CONFIG_SPACE_LEN
;
4463 size
= PCI_CONFIG_SPACE_LEN
;
4464 for (i
= 0; i
< (size
/ 4); i
++)
4465 pci_write_config_dword(dev
, i
* 4, adapter
->config_space
[i
]);
4466 kfree(adapter
->config_space
);
4467 adapter
->config_space
= NULL
;
4470 #endif /* CONFIG_PM */
4473 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4475 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4476 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4477 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
;
4478 uint32_t wufc
= adapter
->wol
;
4481 netif_device_detach(netdev
);
4483 if (netif_running(netdev
))
4484 e1000_down(adapter
);
4487 /* Implement our own version of pci_save_state(pdev) because pci-
4488 * express adapters have 256-byte config spaces. */
4489 retval
= e1000_pci_save_state(adapter
);
4494 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4495 if (status
& E1000_STATUS_LU
)
4496 wufc
&= ~E1000_WUFC_LNKC
;
4499 e1000_setup_rctl(adapter
);
4500 e1000_set_multi(netdev
);
4502 /* turn on all-multi mode if wake on multicast is enabled */
4503 if (adapter
->wol
& E1000_WUFC_MC
) {
4504 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4505 rctl
|= E1000_RCTL_MPE
;
4506 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4509 if (adapter
->hw
.mac_type
>= e1000_82540
) {
4510 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4511 /* advertise wake from D3Cold */
4512 #define E1000_CTRL_ADVD3WUC 0x00100000
4513 /* phy power management enable */
4514 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4515 ctrl
|= E1000_CTRL_ADVD3WUC
|
4516 E1000_CTRL_EN_PHY_PWR_MGMT
;
4517 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4520 if (adapter
->hw
.media_type
== e1000_media_type_fiber
||
4521 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4522 /* keep the laser running in D3 */
4523 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4524 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4525 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4528 /* Allow time for pending master requests to run */
4529 e1000_disable_pciex_master(&adapter
->hw
);
4531 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4532 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4533 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4535 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4536 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4538 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4540 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4541 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4542 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4544 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4545 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0);
4547 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4550 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4551 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4552 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4553 if (manc
& E1000_MANC_SMBUS_EN
) {
4554 manc
|= E1000_MANC_ARP_EN
;
4555 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4556 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 1);
4558 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4559 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 1);
4562 "Error enabling D3 cold wake\n");
4566 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4567 * would have already happened in close and is redundant. */
4568 e1000_release_hw_control(adapter
);
4570 pci_disable_device(pdev
);
4572 retval
= pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4574 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4581 e1000_resume(struct pci_dev
*pdev
)
4583 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4584 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4586 uint32_t manc
, ret_val
;
4588 retval
= pci_set_power_state(pdev
, PCI_D0
);
4590 DPRINTK(PROBE
, ERR
, "Error in setting power state\n");
4591 e1000_pci_restore_state(adapter
);
4592 ret_val
= pci_enable_device(pdev
);
4593 pci_set_master(pdev
);
4595 retval
= pci_enable_wake(pdev
, PCI_D3hot
, 0);
4597 DPRINTK(PROBE
, ERR
, "Error enabling D3 wake\n");
4598 retval
= pci_enable_wake(pdev
, PCI_D3cold
, 0);
4600 DPRINTK(PROBE
, ERR
, "Error enabling D3 cold wake\n");
4602 e1000_reset(adapter
);
4603 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4605 if (netif_running(netdev
))
4608 netif_device_attach(netdev
);
4610 if (adapter
->hw
.mac_type
>= e1000_82540
&&
4611 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4612 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4613 manc
&= ~(E1000_MANC_ARP_EN
);
4614 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4617 /* If the controller is 82573 and f/w is AMT, do not set
4618 * DRV_LOAD until the interface is up. For all other cases,
4619 * let the f/w know that the h/w is now under the control
4621 if (adapter
->hw
.mac_type
!= e1000_82573
||
4622 !e1000_check_mng_mode(&adapter
->hw
))
4623 e1000_get_hw_control(adapter
);
4628 #ifdef CONFIG_NET_POLL_CONTROLLER
4630 * Polling 'interrupt' - used by things like netconsole to send skbs
4631 * without having to re-enable interrupts. It's not called while
4632 * the interrupt routine is executing.
4635 e1000_netpoll(struct net_device
*netdev
)
4637 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4638 disable_irq(adapter
->pdev
->irq
);
4639 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4640 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4641 #ifndef CONFIG_E1000_NAPI
4642 adapter
->clean_rx(adapter
, adapter
->rx_ring
);
4644 enable_irq(adapter
->pdev
->irq
);