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 Accepted ethtool cleanup patch from Stephen Hemminger
35 * o applied Anton's patch to resolve tx hang in hardware
36 * o Applied Andrew Mortons patch - e1000 stops working after resume
39 char e1000_driver_name
[] = "e1000";
40 static char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
41 #ifndef CONFIG_E1000_NAPI
44 #define DRIVERNAPI "-NAPI"
46 #define DRV_VERSION "6.1.16-k2"DRIVERNAPI
47 char e1000_driver_version
[] = DRV_VERSION
;
48 static char e1000_copyright
[] = "Copyright (c) 1999-2005 Intel Corporation.";
50 /* e1000_pci_tbl - PCI Device ID Table
52 * Last entry must be all 0s
55 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
57 static struct pci_device_id e1000_pci_tbl
[] = {
58 INTEL_E1000_ETHERNET_DEVICE(0x1000),
59 INTEL_E1000_ETHERNET_DEVICE(0x1001),
60 INTEL_E1000_ETHERNET_DEVICE(0x1004),
61 INTEL_E1000_ETHERNET_DEVICE(0x1008),
62 INTEL_E1000_ETHERNET_DEVICE(0x1009),
63 INTEL_E1000_ETHERNET_DEVICE(0x100C),
64 INTEL_E1000_ETHERNET_DEVICE(0x100D),
65 INTEL_E1000_ETHERNET_DEVICE(0x100E),
66 INTEL_E1000_ETHERNET_DEVICE(0x100F),
67 INTEL_E1000_ETHERNET_DEVICE(0x1010),
68 INTEL_E1000_ETHERNET_DEVICE(0x1011),
69 INTEL_E1000_ETHERNET_DEVICE(0x1012),
70 INTEL_E1000_ETHERNET_DEVICE(0x1013),
71 INTEL_E1000_ETHERNET_DEVICE(0x1014),
72 INTEL_E1000_ETHERNET_DEVICE(0x1015),
73 INTEL_E1000_ETHERNET_DEVICE(0x1016),
74 INTEL_E1000_ETHERNET_DEVICE(0x1017),
75 INTEL_E1000_ETHERNET_DEVICE(0x1018),
76 INTEL_E1000_ETHERNET_DEVICE(0x1019),
77 INTEL_E1000_ETHERNET_DEVICE(0x101A),
78 INTEL_E1000_ETHERNET_DEVICE(0x101D),
79 INTEL_E1000_ETHERNET_DEVICE(0x101E),
80 INTEL_E1000_ETHERNET_DEVICE(0x1026),
81 INTEL_E1000_ETHERNET_DEVICE(0x1027),
82 INTEL_E1000_ETHERNET_DEVICE(0x1028),
83 INTEL_E1000_ETHERNET_DEVICE(0x105E),
84 INTEL_E1000_ETHERNET_DEVICE(0x105F),
85 INTEL_E1000_ETHERNET_DEVICE(0x1060),
86 INTEL_E1000_ETHERNET_DEVICE(0x1075),
87 INTEL_E1000_ETHERNET_DEVICE(0x1076),
88 INTEL_E1000_ETHERNET_DEVICE(0x1077),
89 INTEL_E1000_ETHERNET_DEVICE(0x1078),
90 INTEL_E1000_ETHERNET_DEVICE(0x1079),
91 INTEL_E1000_ETHERNET_DEVICE(0x107A),
92 INTEL_E1000_ETHERNET_DEVICE(0x107B),
93 INTEL_E1000_ETHERNET_DEVICE(0x107C),
94 INTEL_E1000_ETHERNET_DEVICE(0x107D),
95 INTEL_E1000_ETHERNET_DEVICE(0x107E),
96 INTEL_E1000_ETHERNET_DEVICE(0x107F),
97 INTEL_E1000_ETHERNET_DEVICE(0x108A),
98 INTEL_E1000_ETHERNET_DEVICE(0x108B),
99 INTEL_E1000_ETHERNET_DEVICE(0x108C),
100 INTEL_E1000_ETHERNET_DEVICE(0x109A),
101 /* required last entry */
105 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
107 int e1000_up(struct e1000_adapter
*adapter
);
108 void e1000_down(struct e1000_adapter
*adapter
);
109 void e1000_reset(struct e1000_adapter
*adapter
);
110 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
111 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
112 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
113 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
114 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
115 static int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
116 struct e1000_tx_ring
*txdr
);
117 static int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
118 struct e1000_rx_ring
*rxdr
);
119 static void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
120 struct e1000_tx_ring
*tx_ring
);
121 static void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
122 struct e1000_rx_ring
*rx_ring
);
123 void e1000_update_stats(struct e1000_adapter
*adapter
);
125 /* Local Function Prototypes */
127 static int e1000_init_module(void);
128 static void e1000_exit_module(void);
129 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
130 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
131 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
132 #ifdef CONFIG_E1000_MQ
133 static void e1000_setup_queue_mapping(struct e1000_adapter
*adapter
);
135 static int e1000_sw_init(struct e1000_adapter
*adapter
);
136 static int e1000_open(struct net_device
*netdev
);
137 static int e1000_close(struct net_device
*netdev
);
138 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
139 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
140 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
141 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
142 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
143 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
144 struct e1000_tx_ring
*tx_ring
);
145 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
146 struct e1000_rx_ring
*rx_ring
);
147 static void e1000_set_multi(struct net_device
*netdev
);
148 static void e1000_update_phy_info(unsigned long data
);
149 static void e1000_watchdog(unsigned long data
);
150 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
151 static void e1000_82547_tx_fifo_stall(unsigned long data
);
152 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
153 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
154 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
155 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
156 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
157 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
158 struct e1000_tx_ring
*tx_ring
);
159 #ifdef CONFIG_E1000_NAPI
160 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
161 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
162 struct e1000_rx_ring
*rx_ring
,
163 int *work_done
, int work_to_do
);
164 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
165 struct e1000_rx_ring
*rx_ring
,
166 int *work_done
, int work_to_do
);
168 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
169 struct e1000_rx_ring
*rx_ring
);
170 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
171 struct e1000_rx_ring
*rx_ring
);
173 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
174 struct e1000_rx_ring
*rx_ring
);
175 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
176 struct e1000_rx_ring
*rx_ring
);
177 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
178 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
180 void e1000_set_ethtool_ops(struct net_device
*netdev
);
181 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
182 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
183 static void e1000_tx_timeout(struct net_device
*dev
);
184 static void e1000_tx_timeout_task(struct net_device
*dev
);
185 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
186 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
187 struct sk_buff
*skb
);
189 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
190 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
191 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
192 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
195 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
196 static int e1000_resume(struct pci_dev
*pdev
);
199 #ifdef CONFIG_NET_POLL_CONTROLLER
200 /* for netdump / net console */
201 static void e1000_netpoll (struct net_device
*netdev
);
204 #ifdef CONFIG_E1000_MQ
205 /* for multiple Rx queues */
206 void e1000_rx_schedule(void *data
);
209 /* Exported from other modules */
211 extern void e1000_check_options(struct e1000_adapter
*adapter
);
213 static struct pci_driver e1000_driver
= {
214 .name
= e1000_driver_name
,
215 .id_table
= e1000_pci_tbl
,
216 .probe
= e1000_probe
,
217 .remove
= __devexit_p(e1000_remove
),
218 /* Power Managment Hooks */
220 .suspend
= e1000_suspend
,
221 .resume
= e1000_resume
225 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
226 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(DRV_VERSION
);
230 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
231 module_param(debug
, int, 0);
232 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
235 * e1000_init_module - Driver Registration Routine
237 * e1000_init_module is the first routine called when the driver is
238 * loaded. All it does is register with the PCI subsystem.
242 e1000_init_module(void)
245 printk(KERN_INFO
"%s - version %s\n",
246 e1000_driver_string
, e1000_driver_version
);
248 printk(KERN_INFO
"%s\n", e1000_copyright
);
250 ret
= pci_module_init(&e1000_driver
);
255 module_init(e1000_init_module
);
258 * e1000_exit_module - Driver Exit Cleanup Routine
260 * e1000_exit_module is called just before the driver is removed
265 e1000_exit_module(void)
267 pci_unregister_driver(&e1000_driver
);
270 module_exit(e1000_exit_module
);
273 * e1000_irq_disable - Mask off interrupt generation on the NIC
274 * @adapter: board private structure
278 e1000_irq_disable(struct e1000_adapter
*adapter
)
280 atomic_inc(&adapter
->irq_sem
);
281 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
282 E1000_WRITE_FLUSH(&adapter
->hw
);
283 synchronize_irq(adapter
->pdev
->irq
);
287 * e1000_irq_enable - Enable default interrupt generation settings
288 * @adapter: board private structure
292 e1000_irq_enable(struct e1000_adapter
*adapter
)
294 if(likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
295 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
296 E1000_WRITE_FLUSH(&adapter
->hw
);
301 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
303 struct net_device
*netdev
= adapter
->netdev
;
304 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
305 uint16_t old_vid
= adapter
->mng_vlan_id
;
307 if(!adapter
->vlgrp
->vlan_devices
[vid
]) {
308 if(adapter
->hw
.mng_cookie
.status
&
309 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
310 e1000_vlan_rx_add_vid(netdev
, vid
);
311 adapter
->mng_vlan_id
= vid
;
313 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
315 if((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
317 !adapter
->vlgrp
->vlan_devices
[old_vid
])
318 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
324 e1000_up(struct e1000_adapter
*adapter
)
326 struct net_device
*netdev
= adapter
->netdev
;
329 /* hardware has been reset, we need to reload some things */
331 /* Reset the PHY if it was previously powered down */
332 if(adapter
->hw
.media_type
== e1000_media_type_copper
) {
334 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
335 if(mii_reg
& MII_CR_POWER_DOWN
)
336 e1000_phy_reset(&adapter
->hw
);
339 e1000_set_multi(netdev
);
341 e1000_restore_vlan(adapter
);
343 e1000_configure_tx(adapter
);
344 e1000_setup_rctl(adapter
);
345 e1000_configure_rx(adapter
);
346 for (i
= 0; i
< adapter
->num_queues
; i
++)
347 adapter
->alloc_rx_buf(adapter
, &adapter
->rx_ring
[i
]);
349 #ifdef CONFIG_PCI_MSI
350 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
351 adapter
->have_msi
= TRUE
;
352 if((err
= pci_enable_msi(adapter
->pdev
))) {
354 "Unable to allocate MSI interrupt Error: %d\n", err
);
355 adapter
->have_msi
= FALSE
;
359 if((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
360 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
361 netdev
->name
, netdev
))) {
363 "Unable to allocate interrupt Error: %d\n", err
);
367 mod_timer(&adapter
->watchdog_timer
, jiffies
);
369 #ifdef CONFIG_E1000_NAPI
370 netif_poll_enable(netdev
);
372 e1000_irq_enable(adapter
);
378 e1000_down(struct e1000_adapter
*adapter
)
380 struct net_device
*netdev
= adapter
->netdev
;
382 e1000_irq_disable(adapter
);
383 #ifdef CONFIG_E1000_MQ
384 while (atomic_read(&adapter
->rx_sched_call_data
.count
) != 0);
386 free_irq(adapter
->pdev
->irq
, netdev
);
387 #ifdef CONFIG_PCI_MSI
388 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
389 adapter
->have_msi
== TRUE
)
390 pci_disable_msi(adapter
->pdev
);
392 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
393 del_timer_sync(&adapter
->watchdog_timer
);
394 del_timer_sync(&adapter
->phy_info_timer
);
396 #ifdef CONFIG_E1000_NAPI
397 netif_poll_disable(netdev
);
399 adapter
->link_speed
= 0;
400 adapter
->link_duplex
= 0;
401 netif_carrier_off(netdev
);
402 netif_stop_queue(netdev
);
404 e1000_reset(adapter
);
405 e1000_clean_all_tx_rings(adapter
);
406 e1000_clean_all_rx_rings(adapter
);
408 /* If WoL is not enabled and management mode is not IAMT
409 * Power down the PHY so no link is implied when interface is down */
410 if(!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
411 adapter
->hw
.media_type
== e1000_media_type_copper
&&
412 !e1000_check_mng_mode(&adapter
->hw
) &&
413 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
)) {
415 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
416 mii_reg
|= MII_CR_POWER_DOWN
;
417 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
423 e1000_reset(struct e1000_adapter
*adapter
)
425 struct net_device
*netdev
= adapter
->netdev
;
427 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
428 uint16_t fc_low_water_mark
= E1000_FC_LOW_DIFF
;
430 /* Repartition Pba for greater than 9k mtu
431 * To take effect CTRL.RST is required.
434 switch (adapter
->hw
.mac_type
) {
436 case e1000_82547_rev_2
:
451 if((adapter
->hw
.mac_type
!= e1000_82573
) &&
452 (adapter
->rx_buffer_len
> E1000_RXBUFFER_8192
)) {
453 pba
-= 8; /* allocate more FIFO for Tx */
454 /* send an XOFF when there is enough space in the
455 * Rx FIFO to hold one extra full size Rx packet
457 fc_high_water_mark
= netdev
->mtu
+ ENET_HEADER_SIZE
+
458 ETHERNET_FCS_SIZE
+ 1;
459 fc_low_water_mark
= fc_high_water_mark
+ 8;
463 if(adapter
->hw
.mac_type
== e1000_82547
) {
464 adapter
->tx_fifo_head
= 0;
465 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
466 adapter
->tx_fifo_size
=
467 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
468 atomic_set(&adapter
->tx_fifo_stall
, 0);
471 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
473 /* flow control settings */
474 adapter
->hw
.fc_high_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
476 adapter
->hw
.fc_low_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
478 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
479 adapter
->hw
.fc_send_xon
= 1;
480 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
482 /* Allow time for pending master requests to run */
483 e1000_reset_hw(&adapter
->hw
);
484 if(adapter
->hw
.mac_type
>= e1000_82544
)
485 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
486 if(e1000_init_hw(&adapter
->hw
))
487 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
488 e1000_update_mng_vlan(adapter
);
489 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
490 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
492 e1000_reset_adaptive(&adapter
->hw
);
493 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
494 if (adapter
->en_mng_pt
) {
495 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
496 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
497 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
502 * e1000_probe - Device Initialization Routine
503 * @pdev: PCI device information struct
504 * @ent: entry in e1000_pci_tbl
506 * Returns 0 on success, negative on failure
508 * e1000_probe initializes an adapter identified by a pci_dev structure.
509 * The OS initialization, configuring of the adapter private structure,
510 * and a hardware reset occur.
514 e1000_probe(struct pci_dev
*pdev
,
515 const struct pci_device_id
*ent
)
517 struct net_device
*netdev
;
518 struct e1000_adapter
*adapter
;
519 unsigned long mmio_start
, mmio_len
;
523 static int cards_found
= 0;
524 int i
, err
, pci_using_dac
;
525 uint16_t eeprom_data
;
526 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
527 if((err
= pci_enable_device(pdev
)))
530 if(!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
533 if((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
534 E1000_ERR("No usable DMA configuration, aborting\n");
540 if((err
= pci_request_regions(pdev
, e1000_driver_name
)))
543 pci_set_master(pdev
);
545 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
548 goto err_alloc_etherdev
;
551 SET_MODULE_OWNER(netdev
);
552 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
554 pci_set_drvdata(pdev
, netdev
);
555 adapter
= netdev_priv(netdev
);
556 adapter
->netdev
= netdev
;
557 adapter
->pdev
= pdev
;
558 adapter
->hw
.back
= adapter
;
559 adapter
->msg_enable
= (1 << debug
) - 1;
561 mmio_start
= pci_resource_start(pdev
, BAR_0
);
562 mmio_len
= pci_resource_len(pdev
, BAR_0
);
564 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
565 if(!adapter
->hw
.hw_addr
) {
570 for(i
= BAR_1
; i
<= BAR_5
; i
++) {
571 if(pci_resource_len(pdev
, i
) == 0)
573 if(pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
574 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
579 netdev
->open
= &e1000_open
;
580 netdev
->stop
= &e1000_close
;
581 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
582 netdev
->get_stats
= &e1000_get_stats
;
583 netdev
->set_multicast_list
= &e1000_set_multi
;
584 netdev
->set_mac_address
= &e1000_set_mac
;
585 netdev
->change_mtu
= &e1000_change_mtu
;
586 netdev
->do_ioctl
= &e1000_ioctl
;
587 e1000_set_ethtool_ops(netdev
);
588 netdev
->tx_timeout
= &e1000_tx_timeout
;
589 netdev
->watchdog_timeo
= 5 * HZ
;
590 #ifdef CONFIG_E1000_NAPI
591 netdev
->poll
= &e1000_clean
;
594 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
595 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
596 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
597 #ifdef CONFIG_NET_POLL_CONTROLLER
598 netdev
->poll_controller
= e1000_netpoll
;
600 strcpy(netdev
->name
, pci_name(pdev
));
602 netdev
->mem_start
= mmio_start
;
603 netdev
->mem_end
= mmio_start
+ mmio_len
;
604 netdev
->base_addr
= adapter
->hw
.io_base
;
606 adapter
->bd_number
= cards_found
;
608 /* setup the private structure */
610 if((err
= e1000_sw_init(adapter
)))
613 if((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
614 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
616 if(adapter
->hw
.mac_type
>= e1000_82543
) {
617 netdev
->features
= NETIF_F_SG
|
621 NETIF_F_HW_VLAN_FILTER
;
625 if((adapter
->hw
.mac_type
>= e1000_82544
) &&
626 (adapter
->hw
.mac_type
!= e1000_82547
))
627 netdev
->features
|= NETIF_F_TSO
;
629 #ifdef NETIF_F_TSO_IPV6
630 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
)
631 netdev
->features
|= NETIF_F_TSO_IPV6
;
635 netdev
->features
|= NETIF_F_HIGHDMA
;
637 /* hard_start_xmit is safe against parallel locking */
638 netdev
->features
|= NETIF_F_LLTX
;
640 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
642 /* before reading the EEPROM, reset the controller to
643 * put the device in a known good starting state */
645 e1000_reset_hw(&adapter
->hw
);
647 /* make sure the EEPROM is good */
649 if(e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
650 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
655 /* copy the MAC address out of the EEPROM */
657 if(e1000_read_mac_addr(&adapter
->hw
))
658 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
659 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
660 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
662 if(!is_valid_ether_addr(netdev
->perm_addr
)) {
663 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
668 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
670 e1000_get_bus_info(&adapter
->hw
);
672 init_timer(&adapter
->tx_fifo_stall_timer
);
673 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
674 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
676 init_timer(&adapter
->watchdog_timer
);
677 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
678 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
680 INIT_WORK(&adapter
->watchdog_task
,
681 (void (*)(void *))e1000_watchdog_task
, adapter
);
683 init_timer(&adapter
->phy_info_timer
);
684 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
685 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
687 INIT_WORK(&adapter
->tx_timeout_task
,
688 (void (*)(void *))e1000_tx_timeout_task
, netdev
);
690 /* we're going to reset, so assume we have no link for now */
692 netif_carrier_off(netdev
);
693 netif_stop_queue(netdev
);
695 e1000_check_options(adapter
);
697 /* Initial Wake on LAN setting
698 * If APM wake is enabled in the EEPROM,
699 * enable the ACPI Magic Packet filter
702 switch(adapter
->hw
.mac_type
) {
703 case e1000_82542_rev2_0
:
704 case e1000_82542_rev2_1
:
708 e1000_read_eeprom(&adapter
->hw
,
709 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
710 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
713 case e1000_82546_rev_3
:
714 if((E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
715 && (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
716 e1000_read_eeprom(&adapter
->hw
,
717 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
722 e1000_read_eeprom(&adapter
->hw
,
723 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
726 if(eeprom_data
& eeprom_apme_mask
)
727 adapter
->wol
|= E1000_WUFC_MAG
;
729 /* reset the hardware with the new settings */
730 e1000_reset(adapter
);
732 /* Let firmware know the driver has taken over */
733 switch(adapter
->hw
.mac_type
) {
736 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
737 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
738 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
741 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
742 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
743 swsm
| E1000_SWSM_DRV_LOAD
);
749 strcpy(netdev
->name
, "eth%d");
750 if((err
= register_netdev(netdev
)))
753 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
761 iounmap(adapter
->hw
.hw_addr
);
765 pci_release_regions(pdev
);
770 * e1000_remove - Device Removal Routine
771 * @pdev: PCI device information struct
773 * e1000_remove is called by the PCI subsystem to alert the driver
774 * that it should release a PCI device. The could be caused by a
775 * Hot-Plug event, or because the driver is going to be removed from
779 static void __devexit
780 e1000_remove(struct pci_dev
*pdev
)
782 struct net_device
*netdev
= pci_get_drvdata(pdev
);
783 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
786 #ifdef CONFIG_E1000_NAPI
790 flush_scheduled_work();
792 if(adapter
->hw
.mac_type
>= e1000_82540
&&
793 adapter
->hw
.media_type
== e1000_media_type_copper
) {
794 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
795 if(manc
& E1000_MANC_SMBUS_EN
) {
796 manc
|= E1000_MANC_ARP_EN
;
797 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
801 switch(adapter
->hw
.mac_type
) {
804 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
805 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
806 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
809 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
810 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
811 swsm
& ~E1000_SWSM_DRV_LOAD
);
818 unregister_netdev(netdev
);
819 #ifdef CONFIG_E1000_NAPI
820 for (i
= 0; i
< adapter
->num_queues
; i
++)
821 __dev_put(&adapter
->polling_netdev
[i
]);
824 if(!e1000_check_phy_reset_block(&adapter
->hw
))
825 e1000_phy_hw_reset(&adapter
->hw
);
827 kfree(adapter
->tx_ring
);
828 kfree(adapter
->rx_ring
);
829 #ifdef CONFIG_E1000_NAPI
830 kfree(adapter
->polling_netdev
);
833 iounmap(adapter
->hw
.hw_addr
);
834 pci_release_regions(pdev
);
836 #ifdef CONFIG_E1000_MQ
837 free_percpu(adapter
->cpu_netdev
);
838 free_percpu(adapter
->cpu_tx_ring
);
842 pci_disable_device(pdev
);
846 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
847 * @adapter: board private structure to initialize
849 * e1000_sw_init initializes the Adapter private data structure.
850 * Fields are initialized based on PCI device information and
851 * OS network device settings (MTU size).
855 e1000_sw_init(struct e1000_adapter
*adapter
)
857 struct e1000_hw
*hw
= &adapter
->hw
;
858 struct net_device
*netdev
= adapter
->netdev
;
859 struct pci_dev
*pdev
= adapter
->pdev
;
860 #ifdef CONFIG_E1000_NAPI
864 /* PCI config space info */
866 hw
->vendor_id
= pdev
->vendor
;
867 hw
->device_id
= pdev
->device
;
868 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
869 hw
->subsystem_id
= pdev
->subsystem_device
;
871 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
873 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
875 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
876 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
877 hw
->max_frame_size
= netdev
->mtu
+
878 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
879 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
881 /* identify the MAC */
883 if(e1000_set_mac_type(hw
)) {
884 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
888 /* initialize eeprom parameters */
890 if(e1000_init_eeprom_params(hw
)) {
891 E1000_ERR("EEPROM initialization failed\n");
895 switch(hw
->mac_type
) {
900 case e1000_82541_rev_2
:
901 case e1000_82547_rev_2
:
902 hw
->phy_init_script
= 1;
906 e1000_set_media_type(hw
);
908 hw
->wait_autoneg_complete
= FALSE
;
909 hw
->tbi_compatibility_en
= TRUE
;
910 hw
->adaptive_ifs
= TRUE
;
914 if(hw
->media_type
== e1000_media_type_copper
) {
915 hw
->mdix
= AUTO_ALL_MODES
;
916 hw
->disable_polarity_correction
= FALSE
;
917 hw
->master_slave
= E1000_MASTER_SLAVE
;
920 #ifdef CONFIG_E1000_MQ
921 /* Number of supported queues */
922 switch (hw
->mac_type
) {
925 adapter
->num_queues
= 2;
928 adapter
->num_queues
= 1;
931 adapter
->num_queues
= min(adapter
->num_queues
, num_online_cpus());
933 adapter
->num_queues
= 1;
936 if (e1000_alloc_queues(adapter
)) {
937 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
941 #ifdef CONFIG_E1000_NAPI
942 for (i
= 0; i
< adapter
->num_queues
; i
++) {
943 adapter
->polling_netdev
[i
].priv
= adapter
;
944 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
945 adapter
->polling_netdev
[i
].weight
= 64;
946 dev_hold(&adapter
->polling_netdev
[i
]);
947 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
951 #ifdef CONFIG_E1000_MQ
952 e1000_setup_queue_mapping(adapter
);
955 atomic_set(&adapter
->irq_sem
, 1);
956 spin_lock_init(&adapter
->stats_lock
);
962 * e1000_alloc_queues - Allocate memory for all rings
963 * @adapter: board private structure to initialize
965 * We allocate one ring per queue at run-time since we don't know the
966 * number of queues at compile-time. The polling_netdev array is
967 * intended for Multiqueue, but should work fine with a single queue.
971 e1000_alloc_queues(struct e1000_adapter
*adapter
)
975 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_queues
;
976 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
977 if (!adapter
->tx_ring
)
979 memset(adapter
->tx_ring
, 0, size
);
981 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_queues
;
982 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
983 if (!adapter
->rx_ring
) {
984 kfree(adapter
->tx_ring
);
987 memset(adapter
->rx_ring
, 0, size
);
989 #ifdef CONFIG_E1000_NAPI
990 size
= sizeof(struct net_device
) * adapter
->num_queues
;
991 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
992 if (!adapter
->polling_netdev
) {
993 kfree(adapter
->tx_ring
);
994 kfree(adapter
->rx_ring
);
997 memset(adapter
->polling_netdev
, 0, size
);
1000 return E1000_SUCCESS
;
1003 #ifdef CONFIG_E1000_MQ
1004 static void __devinit
1005 e1000_setup_queue_mapping(struct e1000_adapter
*adapter
)
1009 adapter
->rx_sched_call_data
.func
= e1000_rx_schedule
;
1010 adapter
->rx_sched_call_data
.info
= adapter
->netdev
;
1011 cpus_clear(adapter
->rx_sched_call_data
.cpumask
);
1013 adapter
->cpu_netdev
= alloc_percpu(struct net_device
*);
1014 adapter
->cpu_tx_ring
= alloc_percpu(struct e1000_tx_ring
*);
1018 for_each_online_cpu(cpu
) {
1019 *per_cpu_ptr(adapter
->cpu_tx_ring
, cpu
) = &adapter
->tx_ring
[i
% adapter
->num_queues
];
1020 /* This is incomplete because we'd like to assign separate
1021 * physical cpus to these netdev polling structures and
1022 * avoid saturating a subset of cpus.
1024 if (i
< adapter
->num_queues
) {
1025 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = &adapter
->polling_netdev
[i
];
1026 adapter
->cpu_for_queue
[i
] = cpu
;
1028 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = NULL
;
1032 unlock_cpu_hotplug();
1037 * e1000_open - Called when a network interface is made active
1038 * @netdev: network interface device structure
1040 * Returns 0 on success, negative value on failure
1042 * The open entry point is called when a network interface is made
1043 * active by the system (IFF_UP). At this point all resources needed
1044 * for transmit and receive operations are allocated, the interrupt
1045 * handler is registered with the OS, the watchdog timer is started,
1046 * and the stack is notified that the interface is ready.
1050 e1000_open(struct net_device
*netdev
)
1052 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1055 /* allocate transmit descriptors */
1057 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1060 /* allocate receive descriptors */
1062 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1065 if((err
= e1000_up(adapter
)))
1067 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1068 if((adapter
->hw
.mng_cookie
.status
&
1069 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1070 e1000_update_mng_vlan(adapter
);
1073 return E1000_SUCCESS
;
1076 e1000_free_all_rx_resources(adapter
);
1078 e1000_free_all_tx_resources(adapter
);
1080 e1000_reset(adapter
);
1086 * e1000_close - Disables a network interface
1087 * @netdev: network interface device structure
1089 * Returns 0, this is not allowed to fail
1091 * The close entry point is called when an interface is de-activated
1092 * by the OS. The hardware is still under the drivers control, but
1093 * needs to be disabled. A global MAC reset is issued to stop the
1094 * hardware, and all transmit and receive resources are freed.
1098 e1000_close(struct net_device
*netdev
)
1100 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1102 e1000_down(adapter
);
1104 e1000_free_all_tx_resources(adapter
);
1105 e1000_free_all_rx_resources(adapter
);
1107 if((adapter
->hw
.mng_cookie
.status
&
1108 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1109 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1115 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1116 * @adapter: address of board private structure
1117 * @start: address of beginning of memory
1118 * @len: length of memory
1120 static inline boolean_t
1121 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1122 void *start
, unsigned long len
)
1124 unsigned long begin
= (unsigned long) start
;
1125 unsigned long end
= begin
+ len
;
1127 /* First rev 82545 and 82546 need to not allow any memory
1128 * write location to cross 64k boundary due to errata 23 */
1129 if (adapter
->hw
.mac_type
== e1000_82545
||
1130 adapter
->hw
.mac_type
== e1000_82546
) {
1131 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1138 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1139 * @adapter: board private structure
1140 * @txdr: tx descriptor ring (for a specific queue) to setup
1142 * Return 0 on success, negative on failure
1146 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1147 struct e1000_tx_ring
*txdr
)
1149 struct pci_dev
*pdev
= adapter
->pdev
;
1152 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1154 txdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1155 if(!txdr
->buffer_info
) {
1157 "Unable to allocate memory for the transmit descriptor ring\n");
1160 memset(txdr
->buffer_info
, 0, size
);
1161 memset(&txdr
->previous_buffer_info
, 0, sizeof(struct e1000_buffer
));
1163 /* round up to nearest 4K */
1165 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1166 E1000_ROUNDUP(txdr
->size
, 4096);
1168 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1171 vfree(txdr
->buffer_info
);
1173 "Unable to allocate memory for the transmit descriptor ring\n");
1177 /* Fix for errata 23, can't cross 64kB boundary */
1178 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1179 void *olddesc
= txdr
->desc
;
1180 dma_addr_t olddma
= txdr
->dma
;
1181 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1182 "at %p\n", txdr
->size
, txdr
->desc
);
1183 /* Try again, without freeing the previous */
1184 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1186 /* Failed allocation, critical failure */
1187 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1188 goto setup_tx_desc_die
;
1191 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1193 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1195 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1197 "Unable to allocate aligned memory "
1198 "for the transmit descriptor ring\n");
1199 vfree(txdr
->buffer_info
);
1202 /* Free old allocation, new allocation was successful */
1203 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1206 memset(txdr
->desc
, 0, txdr
->size
);
1208 txdr
->next_to_use
= 0;
1209 txdr
->next_to_clean
= 0;
1210 spin_lock_init(&txdr
->tx_lock
);
1216 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1217 * (Descriptors) for all queues
1218 * @adapter: board private structure
1220 * If this function returns with an error, then it's possible one or
1221 * more of the rings is populated (while the rest are not). It is the
1222 * callers duty to clean those orphaned rings.
1224 * Return 0 on success, negative on failure
1228 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1232 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1233 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1236 "Allocation for Tx Queue %u failed\n", i
);
1245 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1246 * @adapter: board private structure
1248 * Configure the Tx unit of the MAC after a reset.
1252 e1000_configure_tx(struct e1000_adapter
*adapter
)
1255 struct e1000_hw
*hw
= &adapter
->hw
;
1256 uint32_t tdlen
, tctl
, tipg
, tarc
;
1258 /* Setup the HW Tx Head and Tail descriptor pointers */
1260 switch (adapter
->num_queues
) {
1262 tdba
= adapter
->tx_ring
[1].dma
;
1263 tdlen
= adapter
->tx_ring
[1].count
*
1264 sizeof(struct e1000_tx_desc
);
1265 E1000_WRITE_REG(hw
, TDBAL1
, (tdba
& 0x00000000ffffffffULL
));
1266 E1000_WRITE_REG(hw
, TDBAH1
, (tdba
>> 32));
1267 E1000_WRITE_REG(hw
, TDLEN1
, tdlen
);
1268 E1000_WRITE_REG(hw
, TDH1
, 0);
1269 E1000_WRITE_REG(hw
, TDT1
, 0);
1270 adapter
->tx_ring
[1].tdh
= E1000_TDH1
;
1271 adapter
->tx_ring
[1].tdt
= E1000_TDT1
;
1275 tdba
= adapter
->tx_ring
[0].dma
;
1276 tdlen
= adapter
->tx_ring
[0].count
*
1277 sizeof(struct e1000_tx_desc
);
1278 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1279 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1280 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1281 E1000_WRITE_REG(hw
, TDH
, 0);
1282 E1000_WRITE_REG(hw
, TDT
, 0);
1283 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1284 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1288 /* Set the default values for the Tx Inter Packet Gap timer */
1290 switch (hw
->mac_type
) {
1291 case e1000_82542_rev2_0
:
1292 case e1000_82542_rev2_1
:
1293 tipg
= DEFAULT_82542_TIPG_IPGT
;
1294 tipg
|= DEFAULT_82542_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1295 tipg
|= DEFAULT_82542_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1298 if (hw
->media_type
== e1000_media_type_fiber
||
1299 hw
->media_type
== e1000_media_type_internal_serdes
)
1300 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1302 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1303 tipg
|= DEFAULT_82543_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1304 tipg
|= DEFAULT_82543_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1306 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1308 /* Set the Tx Interrupt Delay register */
1310 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1311 if (hw
->mac_type
>= e1000_82540
)
1312 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1314 /* Program the Transmit Control Register */
1316 tctl
= E1000_READ_REG(hw
, TCTL
);
1318 tctl
&= ~E1000_TCTL_CT
;
1319 tctl
|= E1000_TCTL_EN
| E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1320 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1322 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1324 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1325 tarc
= E1000_READ_REG(hw
, TARC0
);
1326 tarc
|= ((1 << 25) | (1 << 21));
1327 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1328 tarc
= E1000_READ_REG(hw
, TARC1
);
1330 if (tctl
& E1000_TCTL_MULR
)
1334 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1337 e1000_config_collision_dist(hw
);
1339 /* Setup Transmit Descriptor Settings for eop descriptor */
1340 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1343 if (hw
->mac_type
< e1000_82543
)
1344 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1346 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1348 /* Cache if we're 82544 running in PCI-X because we'll
1349 * need this to apply a workaround later in the send path. */
1350 if (hw
->mac_type
== e1000_82544
&&
1351 hw
->bus_type
== e1000_bus_type_pcix
)
1352 adapter
->pcix_82544
= 1;
1356 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1357 * @adapter: board private structure
1358 * @rxdr: rx descriptor ring (for a specific queue) to setup
1360 * Returns 0 on success, negative on failure
1364 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1365 struct e1000_rx_ring
*rxdr
)
1367 struct pci_dev
*pdev
= adapter
->pdev
;
1370 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1371 rxdr
->buffer_info
= vmalloc_node(size
, pcibus_to_node(pdev
->bus
));
1372 if (!rxdr
->buffer_info
) {
1374 "Unable to allocate memory for the receive descriptor ring\n");
1377 memset(rxdr
->buffer_info
, 0, size
);
1379 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1380 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1381 if(!rxdr
->ps_page
) {
1382 vfree(rxdr
->buffer_info
);
1384 "Unable to allocate memory for the receive descriptor ring\n");
1387 memset(rxdr
->ps_page
, 0, size
);
1389 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1390 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1391 if(!rxdr
->ps_page_dma
) {
1392 vfree(rxdr
->buffer_info
);
1393 kfree(rxdr
->ps_page
);
1395 "Unable to allocate memory for the receive descriptor ring\n");
1398 memset(rxdr
->ps_page_dma
, 0, size
);
1400 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1401 desc_len
= sizeof(struct e1000_rx_desc
);
1403 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1405 /* Round up to nearest 4K */
1407 rxdr
->size
= rxdr
->count
* desc_len
;
1408 E1000_ROUNDUP(rxdr
->size
, 4096);
1410 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1414 "Unable to allocate memory for the receive descriptor ring\n");
1416 vfree(rxdr
->buffer_info
);
1417 kfree(rxdr
->ps_page
);
1418 kfree(rxdr
->ps_page_dma
);
1422 /* Fix for errata 23, can't cross 64kB boundary */
1423 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1424 void *olddesc
= rxdr
->desc
;
1425 dma_addr_t olddma
= rxdr
->dma
;
1426 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1427 "at %p\n", rxdr
->size
, rxdr
->desc
);
1428 /* Try again, without freeing the previous */
1429 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1430 /* Failed allocation, critical failure */
1432 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1434 "Unable to allocate memory "
1435 "for the receive descriptor ring\n");
1436 goto setup_rx_desc_die
;
1439 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1441 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1443 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1445 "Unable to allocate aligned memory "
1446 "for the receive descriptor ring\n");
1447 goto setup_rx_desc_die
;
1449 /* Free old allocation, new allocation was successful */
1450 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1453 memset(rxdr
->desc
, 0, rxdr
->size
);
1455 rxdr
->next_to_clean
= 0;
1456 rxdr
->next_to_use
= 0;
1462 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1463 * (Descriptors) for all queues
1464 * @adapter: board private structure
1466 * If this function returns with an error, then it's possible one or
1467 * more of the rings is populated (while the rest are not). It is the
1468 * callers duty to clean those orphaned rings.
1470 * Return 0 on success, negative on failure
1474 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1478 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1479 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1482 "Allocation for Rx Queue %u failed\n", i
);
1491 * e1000_setup_rctl - configure the receive control registers
1492 * @adapter: Board private structure
1494 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1495 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1497 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1499 uint32_t rctl
, rfctl
;
1500 uint32_t psrctl
= 0;
1501 #ifdef CONFIG_E1000_PACKET_SPLIT
1505 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1507 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1509 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1510 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1511 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1513 if(adapter
->hw
.tbi_compatibility_on
== 1)
1514 rctl
|= E1000_RCTL_SBP
;
1516 rctl
&= ~E1000_RCTL_SBP
;
1518 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1519 rctl
&= ~E1000_RCTL_LPE
;
1521 rctl
|= E1000_RCTL_LPE
;
1523 /* Setup buffer sizes */
1524 if(adapter
->hw
.mac_type
>= e1000_82571
) {
1525 /* We can now specify buffers in 1K increments.
1526 * BSIZE and BSEX are ignored in this case. */
1527 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1529 rctl
&= ~E1000_RCTL_SZ_4096
;
1530 rctl
|= E1000_RCTL_BSEX
;
1531 switch (adapter
->rx_buffer_len
) {
1532 case E1000_RXBUFFER_2048
:
1534 rctl
|= E1000_RCTL_SZ_2048
;
1535 rctl
&= ~E1000_RCTL_BSEX
;
1537 case E1000_RXBUFFER_4096
:
1538 rctl
|= E1000_RCTL_SZ_4096
;
1540 case E1000_RXBUFFER_8192
:
1541 rctl
|= E1000_RCTL_SZ_8192
;
1543 case E1000_RXBUFFER_16384
:
1544 rctl
|= E1000_RCTL_SZ_16384
;
1549 #ifdef CONFIG_E1000_PACKET_SPLIT
1550 /* 82571 and greater support packet-split where the protocol
1551 * header is placed in skb->data and the packet data is
1552 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1553 * In the case of a non-split, skb->data is linearly filled,
1554 * followed by the page buffers. Therefore, skb->data is
1555 * sized to hold the largest protocol header.
1557 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1558 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1560 adapter
->rx_ps_pages
= pages
;
1562 adapter
->rx_ps_pages
= 0;
1564 if (adapter
->rx_ps_pages
) {
1565 /* Configure extra packet-split registers */
1566 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1567 rfctl
|= E1000_RFCTL_EXTEN
;
1568 /* disable IPv6 packet split support */
1569 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1570 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1572 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1574 psrctl
|= adapter
->rx_ps_bsize0
>>
1575 E1000_PSRCTL_BSIZE0_SHIFT
;
1577 switch (adapter
->rx_ps_pages
) {
1579 psrctl
|= PAGE_SIZE
<<
1580 E1000_PSRCTL_BSIZE3_SHIFT
;
1582 psrctl
|= PAGE_SIZE
<<
1583 E1000_PSRCTL_BSIZE2_SHIFT
;
1585 psrctl
|= PAGE_SIZE
>>
1586 E1000_PSRCTL_BSIZE1_SHIFT
;
1590 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1593 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1597 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1598 * @adapter: board private structure
1600 * Configure the Rx unit of the MAC after a reset.
1604 e1000_configure_rx(struct e1000_adapter
*adapter
)
1607 struct e1000_hw
*hw
= &adapter
->hw
;
1608 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1609 #ifdef CONFIG_E1000_MQ
1610 uint32_t reta
, mrqc
;
1614 if (adapter
->rx_ps_pages
) {
1615 rdlen
= adapter
->rx_ring
[0].count
*
1616 sizeof(union e1000_rx_desc_packet_split
);
1617 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1618 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1620 rdlen
= adapter
->rx_ring
[0].count
*
1621 sizeof(struct e1000_rx_desc
);
1622 adapter
->clean_rx
= e1000_clean_rx_irq
;
1623 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1626 /* disable receives while setting up the descriptors */
1627 rctl
= E1000_READ_REG(hw
, RCTL
);
1628 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1630 /* set the Receive Delay Timer Register */
1631 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1633 if (hw
->mac_type
>= e1000_82540
) {
1634 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1635 if(adapter
->itr
> 1)
1636 E1000_WRITE_REG(hw
, ITR
,
1637 1000000000 / (adapter
->itr
* 256));
1640 if (hw
->mac_type
>= e1000_82571
) {
1641 /* Reset delay timers after every interrupt */
1642 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1643 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1644 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1645 E1000_WRITE_FLUSH(hw
);
1648 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1649 * the Base and Length of the Rx Descriptor Ring */
1650 switch (adapter
->num_queues
) {
1651 #ifdef CONFIG_E1000_MQ
1653 rdba
= adapter
->rx_ring
[1].dma
;
1654 E1000_WRITE_REG(hw
, RDBAL1
, (rdba
& 0x00000000ffffffffULL
));
1655 E1000_WRITE_REG(hw
, RDBAH1
, (rdba
>> 32));
1656 E1000_WRITE_REG(hw
, RDLEN1
, rdlen
);
1657 E1000_WRITE_REG(hw
, RDH1
, 0);
1658 E1000_WRITE_REG(hw
, RDT1
, 0);
1659 adapter
->rx_ring
[1].rdh
= E1000_RDH1
;
1660 adapter
->rx_ring
[1].rdt
= E1000_RDT1
;
1665 rdba
= adapter
->rx_ring
[0].dma
;
1666 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1667 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1668 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1669 E1000_WRITE_REG(hw
, RDH
, 0);
1670 E1000_WRITE_REG(hw
, RDT
, 0);
1671 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1672 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1676 #ifdef CONFIG_E1000_MQ
1677 if (adapter
->num_queues
> 1) {
1678 uint32_t random
[10];
1680 get_random_bytes(&random
[0], 40);
1682 if (hw
->mac_type
<= e1000_82572
) {
1683 E1000_WRITE_REG(hw
, RSSIR
, 0);
1684 E1000_WRITE_REG(hw
, RSSIM
, 0);
1687 switch (adapter
->num_queues
) {
1691 mrqc
= E1000_MRQC_ENABLE_RSS_2Q
;
1695 /* Fill out redirection table */
1696 for (i
= 0; i
< 32; i
++)
1697 E1000_WRITE_REG_ARRAY(hw
, RETA
, i
, reta
);
1698 /* Fill out hash function seeds */
1699 for (i
= 0; i
< 10; i
++)
1700 E1000_WRITE_REG_ARRAY(hw
, RSSRK
, i
, random
[i
]);
1702 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1703 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1704 E1000_WRITE_REG(hw
, MRQC
, mrqc
);
1707 /* Multiqueue and packet checksumming are mutually exclusive. */
1708 if (hw
->mac_type
>= e1000_82571
) {
1709 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1710 rxcsum
|= E1000_RXCSUM_PCSD
;
1711 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1716 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1717 if (hw
->mac_type
>= e1000_82543
) {
1718 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1719 if(adapter
->rx_csum
== TRUE
) {
1720 rxcsum
|= E1000_RXCSUM_TUOFL
;
1722 /* Enable 82571 IPv4 payload checksum for UDP fragments
1723 * Must be used in conjunction with packet-split. */
1724 if ((hw
->mac_type
>= e1000_82571
) &&
1725 (adapter
->rx_ps_pages
)) {
1726 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1729 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1730 /* don't need to clear IPPCSE as it defaults to 0 */
1732 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1734 #endif /* CONFIG_E1000_MQ */
1736 if (hw
->mac_type
== e1000_82573
)
1737 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1739 /* Enable Receives */
1740 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1744 * e1000_free_tx_resources - Free Tx Resources per Queue
1745 * @adapter: board private structure
1746 * @tx_ring: Tx descriptor ring for a specific queue
1748 * Free all transmit software resources
1752 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1753 struct e1000_tx_ring
*tx_ring
)
1755 struct pci_dev
*pdev
= adapter
->pdev
;
1757 e1000_clean_tx_ring(adapter
, tx_ring
);
1759 vfree(tx_ring
->buffer_info
);
1760 tx_ring
->buffer_info
= NULL
;
1762 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1764 tx_ring
->desc
= NULL
;
1768 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1769 * @adapter: board private structure
1771 * Free all transmit software resources
1775 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1779 for (i
= 0; i
< adapter
->num_queues
; i
++)
1780 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1784 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1785 struct e1000_buffer
*buffer_info
)
1787 if(buffer_info
->dma
) {
1788 pci_unmap_page(adapter
->pdev
,
1790 buffer_info
->length
,
1792 buffer_info
->dma
= 0;
1794 if(buffer_info
->skb
) {
1795 dev_kfree_skb_any(buffer_info
->skb
);
1796 buffer_info
->skb
= NULL
;
1801 * e1000_clean_tx_ring - Free Tx Buffers
1802 * @adapter: board private structure
1803 * @tx_ring: ring to be cleaned
1807 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1808 struct e1000_tx_ring
*tx_ring
)
1810 struct e1000_buffer
*buffer_info
;
1814 /* Free all the Tx ring sk_buffs */
1816 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
1817 e1000_unmap_and_free_tx_resource(adapter
,
1818 &tx_ring
->previous_buffer_info
);
1821 for(i
= 0; i
< tx_ring
->count
; i
++) {
1822 buffer_info
= &tx_ring
->buffer_info
[i
];
1823 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1826 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1827 memset(tx_ring
->buffer_info
, 0, size
);
1829 /* Zero out the descriptor ring */
1831 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1833 tx_ring
->next_to_use
= 0;
1834 tx_ring
->next_to_clean
= 0;
1836 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1837 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1841 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1842 * @adapter: board private structure
1846 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1850 for (i
= 0; i
< adapter
->num_queues
; i
++)
1851 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1855 * e1000_free_rx_resources - Free Rx Resources
1856 * @adapter: board private structure
1857 * @rx_ring: ring to clean the resources from
1859 * Free all receive software resources
1863 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1864 struct e1000_rx_ring
*rx_ring
)
1866 struct pci_dev
*pdev
= adapter
->pdev
;
1868 e1000_clean_rx_ring(adapter
, rx_ring
);
1870 vfree(rx_ring
->buffer_info
);
1871 rx_ring
->buffer_info
= NULL
;
1872 kfree(rx_ring
->ps_page
);
1873 rx_ring
->ps_page
= NULL
;
1874 kfree(rx_ring
->ps_page_dma
);
1875 rx_ring
->ps_page_dma
= NULL
;
1877 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1879 rx_ring
->desc
= NULL
;
1883 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1884 * @adapter: board private structure
1886 * Free all receive software resources
1890 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1894 for (i
= 0; i
< adapter
->num_queues
; i
++)
1895 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1899 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1900 * @adapter: board private structure
1901 * @rx_ring: ring to free buffers from
1905 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1906 struct e1000_rx_ring
*rx_ring
)
1908 struct e1000_buffer
*buffer_info
;
1909 struct e1000_ps_page
*ps_page
;
1910 struct e1000_ps_page_dma
*ps_page_dma
;
1911 struct pci_dev
*pdev
= adapter
->pdev
;
1915 /* Free all the Rx ring sk_buffs */
1917 for(i
= 0; i
< rx_ring
->count
; i
++) {
1918 buffer_info
= &rx_ring
->buffer_info
[i
];
1919 if(buffer_info
->skb
) {
1920 ps_page
= &rx_ring
->ps_page
[i
];
1921 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1922 pci_unmap_single(pdev
,
1924 buffer_info
->length
,
1925 PCI_DMA_FROMDEVICE
);
1927 dev_kfree_skb(buffer_info
->skb
);
1928 buffer_info
->skb
= NULL
;
1930 for(j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1931 if(!ps_page
->ps_page
[j
]) break;
1932 pci_unmap_single(pdev
,
1933 ps_page_dma
->ps_page_dma
[j
],
1934 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1935 ps_page_dma
->ps_page_dma
[j
] = 0;
1936 put_page(ps_page
->ps_page
[j
]);
1937 ps_page
->ps_page
[j
] = NULL
;
1942 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1943 memset(rx_ring
->buffer_info
, 0, size
);
1944 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1945 memset(rx_ring
->ps_page
, 0, size
);
1946 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1947 memset(rx_ring
->ps_page_dma
, 0, size
);
1949 /* Zero out the descriptor ring */
1951 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1953 rx_ring
->next_to_clean
= 0;
1954 rx_ring
->next_to_use
= 0;
1956 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1957 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1961 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1962 * @adapter: board private structure
1966 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
1970 for (i
= 0; i
< adapter
->num_queues
; i
++)
1971 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1974 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1975 * and memory write and invalidate disabled for certain operations
1978 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
1980 struct net_device
*netdev
= adapter
->netdev
;
1983 e1000_pci_clear_mwi(&adapter
->hw
);
1985 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1986 rctl
|= E1000_RCTL_RST
;
1987 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1988 E1000_WRITE_FLUSH(&adapter
->hw
);
1991 if(netif_running(netdev
))
1992 e1000_clean_all_rx_rings(adapter
);
1996 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
1998 struct net_device
*netdev
= adapter
->netdev
;
2001 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
2002 rctl
&= ~E1000_RCTL_RST
;
2003 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
2004 E1000_WRITE_FLUSH(&adapter
->hw
);
2007 if(adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2008 e1000_pci_set_mwi(&adapter
->hw
);
2010 if(netif_running(netdev
)) {
2011 e1000_configure_rx(adapter
);
2012 e1000_alloc_rx_buffers(adapter
, &adapter
->rx_ring
[0]);
2017 * e1000_set_mac - Change the Ethernet Address of the NIC
2018 * @netdev: network interface device structure
2019 * @p: pointer to an address structure
2021 * Returns 0 on success, negative on failure
2025 e1000_set_mac(struct net_device
*netdev
, void *p
)
2027 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2028 struct sockaddr
*addr
= p
;
2030 if(!is_valid_ether_addr(addr
->sa_data
))
2031 return -EADDRNOTAVAIL
;
2033 /* 82542 2.0 needs to be in reset to write receive address registers */
2035 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2036 e1000_enter_82542_rst(adapter
);
2038 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2039 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2041 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2043 /* With 82571 controllers, LAA may be overwritten (with the default)
2044 * due to controller reset from the other port. */
2045 if (adapter
->hw
.mac_type
== e1000_82571
) {
2046 /* activate the work around */
2047 adapter
->hw
.laa_is_present
= 1;
2049 /* Hold a copy of the LAA in RAR[14] This is done so that
2050 * between the time RAR[0] gets clobbered and the time it
2051 * gets fixed (in e1000_watchdog), the actual LAA is in one
2052 * of the RARs and no incoming packets directed to this port
2053 * are dropped. Eventaully the LAA will be in RAR[0] and
2055 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2056 E1000_RAR_ENTRIES
- 1);
2059 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2060 e1000_leave_82542_rst(adapter
);
2066 * e1000_set_multi - Multicast and Promiscuous mode set
2067 * @netdev: network interface device structure
2069 * The set_multi entry point is called whenever the multicast address
2070 * list or the network interface flags are updated. This routine is
2071 * responsible for configuring the hardware for proper multicast,
2072 * promiscuous mode, and all-multi behavior.
2076 e1000_set_multi(struct net_device
*netdev
)
2078 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2079 struct e1000_hw
*hw
= &adapter
->hw
;
2080 struct dev_mc_list
*mc_ptr
;
2082 uint32_t hash_value
;
2083 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2085 /* reserve RAR[14] for LAA over-write work-around */
2086 if (adapter
->hw
.mac_type
== e1000_82571
)
2089 /* Check for Promiscuous and All Multicast modes */
2091 rctl
= E1000_READ_REG(hw
, RCTL
);
2093 if(netdev
->flags
& IFF_PROMISC
) {
2094 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2095 } else if(netdev
->flags
& IFF_ALLMULTI
) {
2096 rctl
|= E1000_RCTL_MPE
;
2097 rctl
&= ~E1000_RCTL_UPE
;
2099 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2102 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2104 /* 82542 2.0 needs to be in reset to write receive address registers */
2106 if(hw
->mac_type
== e1000_82542_rev2_0
)
2107 e1000_enter_82542_rst(adapter
);
2109 /* load the first 14 multicast address into the exact filters 1-14
2110 * RAR 0 is used for the station MAC adddress
2111 * if there are not 14 addresses, go ahead and clear the filters
2112 * -- with 82571 controllers only 0-13 entries are filled here
2114 mc_ptr
= netdev
->mc_list
;
2116 for(i
= 1; i
< rar_entries
; i
++) {
2118 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2119 mc_ptr
= mc_ptr
->next
;
2121 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2122 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2126 /* clear the old settings from the multicast hash table */
2128 for(i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2129 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2131 /* load any remaining addresses into the hash table */
2133 for(; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2134 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2135 e1000_mta_set(hw
, hash_value
);
2138 if(hw
->mac_type
== e1000_82542_rev2_0
)
2139 e1000_leave_82542_rst(adapter
);
2142 /* Need to wait a few seconds after link up to get diagnostic information from
2146 e1000_update_phy_info(unsigned long data
)
2148 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2149 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2153 * e1000_82547_tx_fifo_stall - Timer Call-back
2154 * @data: pointer to adapter cast into an unsigned long
2158 e1000_82547_tx_fifo_stall(unsigned long data
)
2160 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2161 struct net_device
*netdev
= adapter
->netdev
;
2164 if(atomic_read(&adapter
->tx_fifo_stall
)) {
2165 if((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2166 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2167 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2168 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2169 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2170 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2171 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2172 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2173 tctl
& ~E1000_TCTL_EN
);
2174 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2175 adapter
->tx_head_addr
);
2176 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2177 adapter
->tx_head_addr
);
2178 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2179 adapter
->tx_head_addr
);
2180 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2181 adapter
->tx_head_addr
);
2182 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2183 E1000_WRITE_FLUSH(&adapter
->hw
);
2185 adapter
->tx_fifo_head
= 0;
2186 atomic_set(&adapter
->tx_fifo_stall
, 0);
2187 netif_wake_queue(netdev
);
2189 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2195 * e1000_watchdog - Timer Call-back
2196 * @data: pointer to adapter cast into an unsigned long
2199 e1000_watchdog(unsigned long data
)
2201 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2203 /* Do the rest outside of interrupt context */
2204 schedule_work(&adapter
->watchdog_task
);
2208 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2210 struct net_device
*netdev
= adapter
->netdev
;
2211 struct e1000_tx_ring
*txdr
= &adapter
->tx_ring
[0];
2214 e1000_check_for_link(&adapter
->hw
);
2215 if (adapter
->hw
.mac_type
== e1000_82573
) {
2216 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2217 if(adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2218 e1000_update_mng_vlan(adapter
);
2221 if((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2222 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2223 link
= !adapter
->hw
.serdes_link_down
;
2225 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2228 if(!netif_carrier_ok(netdev
)) {
2229 e1000_get_speed_and_duplex(&adapter
->hw
,
2230 &adapter
->link_speed
,
2231 &adapter
->link_duplex
);
2233 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2234 adapter
->link_speed
,
2235 adapter
->link_duplex
== FULL_DUPLEX
?
2236 "Full Duplex" : "Half Duplex");
2238 netif_carrier_on(netdev
);
2239 netif_wake_queue(netdev
);
2240 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2241 adapter
->smartspeed
= 0;
2244 if(netif_carrier_ok(netdev
)) {
2245 adapter
->link_speed
= 0;
2246 adapter
->link_duplex
= 0;
2247 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2248 netif_carrier_off(netdev
);
2249 netif_stop_queue(netdev
);
2250 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2253 e1000_smartspeed(adapter
);
2256 e1000_update_stats(adapter
);
2258 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2259 adapter
->tpt_old
= adapter
->stats
.tpt
;
2260 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2261 adapter
->colc_old
= adapter
->stats
.colc
;
2263 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2264 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2265 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2266 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2268 e1000_update_adaptive(&adapter
->hw
);
2270 if (adapter
->num_queues
== 1 && !netif_carrier_ok(netdev
)) {
2271 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2272 /* We've lost link, so the controller stops DMA,
2273 * but we've got queued Tx work that's never going
2274 * to get done, so reset controller to flush Tx.
2275 * (Do the reset outside of interrupt context). */
2276 schedule_work(&adapter
->tx_timeout_task
);
2280 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2281 if(adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2282 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2283 * asymmetrical Tx or Rx gets ITR=8000; everyone
2284 * else is between 2000-8000. */
2285 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2286 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2287 adapter
->gotcl
- adapter
->gorcl
:
2288 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2289 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2290 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2293 /* Cause software interrupt to ensure rx ring is cleaned */
2294 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2296 /* Force detection of hung controller every watchdog period */
2297 adapter
->detect_tx_hung
= TRUE
;
2299 /* With 82571 controllers, LAA may be overwritten due to controller
2300 * reset from the other port. Set the appropriate LAA in RAR[0] */
2301 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2302 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2304 /* Reset the timer */
2305 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2308 #define E1000_TX_FLAGS_CSUM 0x00000001
2309 #define E1000_TX_FLAGS_VLAN 0x00000002
2310 #define E1000_TX_FLAGS_TSO 0x00000004
2311 #define E1000_TX_FLAGS_IPV4 0x00000008
2312 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2313 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2316 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2317 struct sk_buff
*skb
)
2320 struct e1000_context_desc
*context_desc
;
2322 uint32_t cmd_length
= 0;
2323 uint16_t ipcse
= 0, tucse
, mss
;
2324 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2327 if(skb_shinfo(skb
)->tso_size
) {
2328 if (skb_header_cloned(skb
)) {
2329 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2334 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2335 mss
= skb_shinfo(skb
)->tso_size
;
2336 if(skb
->protocol
== ntohs(ETH_P_IP
)) {
2337 skb
->nh
.iph
->tot_len
= 0;
2338 skb
->nh
.iph
->check
= 0;
2340 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2345 cmd_length
= E1000_TXD_CMD_IP
;
2346 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2347 #ifdef NETIF_F_TSO_IPV6
2348 } else if(skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2349 skb
->nh
.ipv6h
->payload_len
= 0;
2351 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2352 &skb
->nh
.ipv6h
->daddr
,
2359 ipcss
= skb
->nh
.raw
- skb
->data
;
2360 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2361 tucss
= skb
->h
.raw
- skb
->data
;
2362 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2365 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2366 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2368 i
= tx_ring
->next_to_use
;
2369 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2371 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2372 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2373 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2374 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2375 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2376 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2377 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2378 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2379 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2381 if (++i
== tx_ring
->count
) i
= 0;
2382 tx_ring
->next_to_use
= i
;
2391 static inline boolean_t
2392 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2393 struct sk_buff
*skb
)
2395 struct e1000_context_desc
*context_desc
;
2399 if(likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2400 css
= skb
->h
.raw
- skb
->data
;
2402 i
= tx_ring
->next_to_use
;
2403 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2405 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2406 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2407 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2408 context_desc
->tcp_seg_setup
.data
= 0;
2409 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2411 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2412 tx_ring
->next_to_use
= i
;
2420 #define E1000_MAX_TXD_PWR 12
2421 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2424 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2425 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2426 unsigned int nr_frags
, unsigned int mss
)
2428 struct e1000_buffer
*buffer_info
;
2429 unsigned int len
= skb
->len
;
2430 unsigned int offset
= 0, size
, count
= 0, i
;
2432 len
-= skb
->data_len
;
2434 i
= tx_ring
->next_to_use
;
2437 buffer_info
= &tx_ring
->buffer_info
[i
];
2438 size
= min(len
, max_per_txd
);
2440 /* Workaround for premature desc write-backs
2441 * in TSO mode. Append 4-byte sentinel desc */
2442 if(unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2445 /* work-around for errata 10 and it applies
2446 * to all controllers in PCI-X mode
2447 * The fix is to make sure that the first descriptor of a
2448 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2450 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2451 (size
> 2015) && count
== 0))
2454 /* Workaround for potential 82544 hang in PCI-X. Avoid
2455 * terminating buffers within evenly-aligned dwords. */
2456 if(unlikely(adapter
->pcix_82544
&&
2457 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2461 buffer_info
->length
= size
;
2463 pci_map_single(adapter
->pdev
,
2467 buffer_info
->time_stamp
= jiffies
;
2472 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2475 for(f
= 0; f
< nr_frags
; f
++) {
2476 struct skb_frag_struct
*frag
;
2478 frag
= &skb_shinfo(skb
)->frags
[f
];
2480 offset
= frag
->page_offset
;
2483 buffer_info
= &tx_ring
->buffer_info
[i
];
2484 size
= min(len
, max_per_txd
);
2486 /* Workaround for premature desc write-backs
2487 * in TSO mode. Append 4-byte sentinel desc */
2488 if(unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2491 /* Workaround for potential 82544 hang in PCI-X.
2492 * Avoid terminating buffers within evenly-aligned
2494 if(unlikely(adapter
->pcix_82544
&&
2495 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2499 buffer_info
->length
= size
;
2501 pci_map_page(adapter
->pdev
,
2506 buffer_info
->time_stamp
= jiffies
;
2511 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2515 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2516 tx_ring
->buffer_info
[i
].skb
= skb
;
2517 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2523 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2524 int tx_flags
, int count
)
2526 struct e1000_tx_desc
*tx_desc
= NULL
;
2527 struct e1000_buffer
*buffer_info
;
2528 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2531 if(likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2532 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2534 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2536 if(likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2537 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2540 if(likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2541 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2542 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2545 if(unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2546 txd_lower
|= E1000_TXD_CMD_VLE
;
2547 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2550 i
= tx_ring
->next_to_use
;
2553 buffer_info
= &tx_ring
->buffer_info
[i
];
2554 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2555 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2556 tx_desc
->lower
.data
=
2557 cpu_to_le32(txd_lower
| buffer_info
->length
);
2558 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2559 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2562 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2564 /* Force memory writes to complete before letting h/w
2565 * know there are new descriptors to fetch. (Only
2566 * applicable for weak-ordered memory model archs,
2567 * such as IA-64). */
2570 tx_ring
->next_to_use
= i
;
2571 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2575 * 82547 workaround to avoid controller hang in half-duplex environment.
2576 * The workaround is to avoid queuing a large packet that would span
2577 * the internal Tx FIFO ring boundary by notifying the stack to resend
2578 * the packet at a later time. This gives the Tx FIFO an opportunity to
2579 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2580 * to the beginning of the Tx FIFO.
2583 #define E1000_FIFO_HDR 0x10
2584 #define E1000_82547_PAD_LEN 0x3E0
2587 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2589 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2590 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2592 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2594 if(adapter
->link_duplex
!= HALF_DUPLEX
)
2595 goto no_fifo_stall_required
;
2597 if(atomic_read(&adapter
->tx_fifo_stall
))
2600 if(skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2601 atomic_set(&adapter
->tx_fifo_stall
, 1);
2605 no_fifo_stall_required
:
2606 adapter
->tx_fifo_head
+= skb_fifo_len
;
2607 if(adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2608 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2612 #define MINIMUM_DHCP_PACKET_SIZE 282
2614 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2616 struct e1000_hw
*hw
= &adapter
->hw
;
2617 uint16_t length
, offset
;
2618 if(vlan_tx_tag_present(skb
)) {
2619 if(!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2620 ( adapter
->hw
.mng_cookie
.status
&
2621 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2624 if(htons(ETH_P_IP
) == skb
->protocol
) {
2625 const struct iphdr
*ip
= skb
->nh
.iph
;
2626 if(IPPROTO_UDP
== ip
->protocol
) {
2627 struct udphdr
*udp
= (struct udphdr
*)(skb
->h
.uh
);
2628 if(ntohs(udp
->dest
) == 67) {
2629 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2630 length
= skb
->len
- offset
;
2632 return e1000_mng_write_dhcp_info(hw
,
2633 (uint8_t *)udp
+ 8, length
);
2636 } else if((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2637 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2638 if((htons(ETH_P_IP
) == eth
->h_proto
)) {
2639 const struct iphdr
*ip
=
2640 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2641 if(IPPROTO_UDP
== ip
->protocol
) {
2642 struct udphdr
*udp
=
2643 (struct udphdr
*)((uint8_t *)ip
+
2645 if(ntohs(udp
->dest
) == 67) {
2646 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2647 length
= skb
->len
- offset
;
2649 return e1000_mng_write_dhcp_info(hw
,
2659 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2661 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2663 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2664 struct e1000_tx_ring
*tx_ring
;
2665 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2666 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2667 unsigned int tx_flags
= 0;
2668 unsigned int len
= skb
->len
;
2669 unsigned long flags
;
2670 unsigned int nr_frags
= 0;
2671 unsigned int mss
= 0;
2675 len
-= skb
->data_len
;
2677 #ifdef CONFIG_E1000_MQ
2678 tx_ring
= *per_cpu_ptr(adapter
->cpu_tx_ring
, smp_processor_id());
2680 tx_ring
= adapter
->tx_ring
;
2683 if (unlikely(skb
->len
<= 0)) {
2684 dev_kfree_skb_any(skb
);
2685 return NETDEV_TX_OK
;
2689 mss
= skb_shinfo(skb
)->tso_size
;
2690 /* The controller does a simple calculation to
2691 * make sure there is enough room in the FIFO before
2692 * initiating the DMA for each buffer. The calc is:
2693 * 4 = ceil(buffer len/mss). To make sure we don't
2694 * overrun the FIFO, adjust the max buffer len if mss
2697 max_per_txd
= min(mss
<< 2, max_per_txd
);
2698 max_txd_pwr
= fls(max_per_txd
) - 1;
2701 if((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2705 if(skb
->ip_summed
== CHECKSUM_HW
)
2708 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2710 if(adapter
->pcix_82544
)
2713 /* work-around for errata 10 and it applies to all controllers
2714 * in PCI-X mode, so add one more descriptor to the count
2716 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2720 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2721 for(f
= 0; f
< nr_frags
; f
++)
2722 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2724 if(adapter
->pcix_82544
)
2728 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2729 * points to just header, pull a few bytes of payload from
2730 * frags into skb->data */
2731 if (skb_shinfo(skb
)->tso_size
) {
2733 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2734 if (skb
->data_len
&& (hdr_len
< (skb
->len
- skb
->data_len
)) &&
2735 (adapter
->hw
.mac_type
== e1000_82571
||
2736 adapter
->hw
.mac_type
== e1000_82572
)) {
2737 unsigned int pull_size
;
2738 pull_size
= min((unsigned int)4, skb
->data_len
);
2739 if (!__pskb_pull_tail(skb
, pull_size
)) {
2740 printk(KERN_ERR
"__pskb_pull_tail failed.\n");
2741 dev_kfree_skb_any(skb
);
2748 if(adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2749 e1000_transfer_dhcp_info(adapter
, skb
);
2751 local_irq_save(flags
);
2752 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2753 /* Collision - tell upper layer to requeue */
2754 local_irq_restore(flags
);
2755 return NETDEV_TX_LOCKED
;
2758 /* need: count + 2 desc gap to keep tail from touching
2759 * head, otherwise try next time */
2760 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2761 netif_stop_queue(netdev
);
2762 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2763 return NETDEV_TX_BUSY
;
2766 if(unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2767 if(unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2768 netif_stop_queue(netdev
);
2769 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2770 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2771 return NETDEV_TX_BUSY
;
2775 if(unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2776 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2777 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2780 first
= tx_ring
->next_to_use
;
2782 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2784 dev_kfree_skb_any(skb
);
2785 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2786 return NETDEV_TX_OK
;
2790 tx_flags
|= E1000_TX_FLAGS_TSO
;
2791 else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2792 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2794 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2795 * 82571 hardware supports TSO capabilities for IPv6 as well...
2796 * no longer assume, we must. */
2797 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2798 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2800 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2801 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2802 max_per_txd
, nr_frags
, mss
));
2804 netdev
->trans_start
= jiffies
;
2806 /* Make sure there is space in the ring for the next send. */
2807 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2808 netif_stop_queue(netdev
);
2810 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2811 return NETDEV_TX_OK
;
2815 * e1000_tx_timeout - Respond to a Tx Hang
2816 * @netdev: network interface device structure
2820 e1000_tx_timeout(struct net_device
*netdev
)
2822 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2824 /* Do the reset outside of interrupt context */
2825 schedule_work(&adapter
->tx_timeout_task
);
2829 e1000_tx_timeout_task(struct net_device
*netdev
)
2831 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2833 e1000_down(adapter
);
2838 * e1000_get_stats - Get System Network Statistics
2839 * @netdev: network interface device structure
2841 * Returns the address of the device statistics structure.
2842 * The statistics are actually updated from the timer callback.
2845 static struct net_device_stats
*
2846 e1000_get_stats(struct net_device
*netdev
)
2848 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2850 e1000_update_stats(adapter
);
2851 return &adapter
->net_stats
;
2855 * e1000_change_mtu - Change the Maximum Transfer Unit
2856 * @netdev: network interface device structure
2857 * @new_mtu: new value for maximum frame size
2859 * Returns 0 on success, negative on failure
2863 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2865 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2866 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2868 if((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2869 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2870 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2874 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2875 /* might want this to be bigger enum check... */
2876 /* 82571 controllers limit jumbo frame size to 10500 bytes */
2877 if ((adapter
->hw
.mac_type
== e1000_82571
||
2878 adapter
->hw
.mac_type
== e1000_82572
) &&
2879 max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2880 DPRINTK(PROBE
, ERR
, "MTU > 9216 bytes not supported "
2881 "on 82571 and 82572 controllers.\n");
2885 if(adapter
->hw
.mac_type
== e1000_82573
&&
2886 max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2887 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2892 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2893 adapter
->rx_buffer_len
= max_frame
;
2894 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
2896 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
2897 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
2898 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2903 if(max_frame
<= E1000_RXBUFFER_2048
) {
2904 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
2905 } else if(max_frame
<= E1000_RXBUFFER_4096
) {
2906 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
2907 } else if(max_frame
<= E1000_RXBUFFER_8192
) {
2908 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
2909 } else if(max_frame
<= E1000_RXBUFFER_16384
) {
2910 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
2915 netdev
->mtu
= new_mtu
;
2917 if(netif_running(netdev
)) {
2918 e1000_down(adapter
);
2922 adapter
->hw
.max_frame_size
= max_frame
;
2928 * e1000_update_stats - Update the board statistics counters
2929 * @adapter: board private structure
2933 e1000_update_stats(struct e1000_adapter
*adapter
)
2935 struct e1000_hw
*hw
= &adapter
->hw
;
2936 unsigned long flags
;
2939 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2941 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2943 /* these counters are modified from e1000_adjust_tbi_stats,
2944 * called from the interrupt context, so they must only
2945 * be written while holding adapter->stats_lock
2948 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
2949 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
2950 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
2951 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
2952 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
2953 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
2954 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
2955 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
2956 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
2957 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
2958 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
2959 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
2960 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
2962 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
2963 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
2964 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
2965 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
2966 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
2967 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
2968 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
2969 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
2970 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
2971 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
2972 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
2973 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
2974 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
2975 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
2976 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
2977 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
2978 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
2979 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
2980 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
2981 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
2982 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
2983 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
2984 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
2985 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
2986 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
2987 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
2988 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
2989 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
2990 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
2991 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
2992 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
2993 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
2994 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
2995 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
2997 /* used for adaptive IFS */
2999 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
3000 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
3001 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
3002 adapter
->stats
.colc
+= hw
->collision_delta
;
3004 if(hw
->mac_type
>= e1000_82543
) {
3005 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
3006 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3007 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3008 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3009 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3010 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3012 if(hw
->mac_type
> e1000_82547_rev_2
) {
3013 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3014 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3015 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3016 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3017 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3018 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3019 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3020 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3021 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3024 /* Fill out the OS statistics structure */
3026 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3027 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3028 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3029 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3030 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3031 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3035 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3036 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3037 adapter
->stats
.rlec
+ adapter
->stats
.mpc
+
3038 adapter
->stats
.cexterr
;
3039 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
3040 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3041 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3042 adapter
->net_stats
.rx_fifo_errors
= adapter
->stats
.mpc
;
3043 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3047 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3048 adapter
->stats
.latecol
;
3049 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3050 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3051 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3053 /* Tx Dropped needs to be maintained elsewhere */
3057 if(hw
->media_type
== e1000_media_type_copper
) {
3058 if((adapter
->link_speed
== SPEED_1000
) &&
3059 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3060 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3061 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3064 if((hw
->mac_type
<= e1000_82546
) &&
3065 (hw
->phy_type
== e1000_phy_m88
) &&
3066 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3067 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3070 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3073 #ifdef CONFIG_E1000_MQ
3075 e1000_rx_schedule(void *data
)
3077 struct net_device
*poll_dev
, *netdev
= data
;
3078 struct e1000_adapter
*adapter
= netdev
->priv
;
3079 int this_cpu
= get_cpu();
3081 poll_dev
= *per_cpu_ptr(adapter
->cpu_netdev
, this_cpu
);
3082 if (poll_dev
== NULL
) {
3087 if (likely(netif_rx_schedule_prep(poll_dev
)))
3088 __netif_rx_schedule(poll_dev
);
3090 e1000_irq_enable(adapter
);
3097 * e1000_intr - Interrupt Handler
3098 * @irq: interrupt number
3099 * @data: pointer to a network interface device structure
3100 * @pt_regs: CPU registers structure
3104 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3106 struct net_device
*netdev
= data
;
3107 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3108 struct e1000_hw
*hw
= &adapter
->hw
;
3109 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3110 #if defined(CONFIG_E1000_NAPI) && defined(CONFIG_E1000_MQ) || !defined(CONFIG_E1000_NAPI)
3115 return IRQ_NONE
; /* Not our interrupt */
3117 if(unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3118 hw
->get_link_status
= 1;
3119 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3122 #ifdef CONFIG_E1000_NAPI
3123 atomic_inc(&adapter
->irq_sem
);
3124 E1000_WRITE_REG(hw
, IMC
, ~0);
3125 E1000_WRITE_FLUSH(hw
);
3126 #ifdef CONFIG_E1000_MQ
3127 if (atomic_read(&adapter
->rx_sched_call_data
.count
) == 0) {
3128 cpu_set(adapter
->cpu_for_queue
[0],
3129 adapter
->rx_sched_call_data
.cpumask
);
3130 for (i
= 1; i
< adapter
->num_queues
; i
++) {
3131 cpu_set(adapter
->cpu_for_queue
[i
],
3132 adapter
->rx_sched_call_data
.cpumask
);
3133 atomic_inc(&adapter
->irq_sem
);
3135 atomic_set(&adapter
->rx_sched_call_data
.count
, i
);
3136 smp_call_async_mask(&adapter
->rx_sched_call_data
);
3138 printk("call_data.count == %u\n", atomic_read(&adapter
->rx_sched_call_data
.count
));
3140 #else /* if !CONFIG_E1000_MQ */
3141 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3142 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3144 e1000_irq_enable(adapter
);
3145 #endif /* CONFIG_E1000_MQ */
3147 #else /* if !CONFIG_E1000_NAPI */
3148 /* Writing IMC and IMS is needed for 82547.
3149 Due to Hub Link bus being occupied, an interrupt
3150 de-assertion message is not able to be sent.
3151 When an interrupt assertion message is generated later,
3152 two messages are re-ordered and sent out.
3153 That causes APIC to think 82547 is in de-assertion
3154 state, while 82547 is in assertion state, resulting
3155 in dead lock. Writing IMC forces 82547 into
3158 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
){
3159 atomic_inc(&adapter
->irq_sem
);
3160 E1000_WRITE_REG(hw
, IMC
, ~0);
3163 for(i
= 0; i
< E1000_MAX_INTR
; i
++)
3164 if(unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3165 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3168 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3169 e1000_irq_enable(adapter
);
3171 #endif /* CONFIG_E1000_NAPI */
3176 #ifdef CONFIG_E1000_NAPI
3178 * e1000_clean - NAPI Rx polling callback
3179 * @adapter: board private structure
3183 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3185 struct e1000_adapter
*adapter
;
3186 int work_to_do
= min(*budget
, poll_dev
->quota
);
3187 int tx_cleaned
, i
= 0, work_done
= 0;
3189 /* Must NOT use netdev_priv macro here. */
3190 adapter
= poll_dev
->priv
;
3192 /* Keep link state information with original netdev */
3193 if (!netif_carrier_ok(adapter
->netdev
))
3196 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3198 if (unlikely(i
== adapter
->num_queues
))
3202 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3203 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3204 &work_done
, work_to_do
);
3206 *budget
-= work_done
;
3207 poll_dev
->quota
-= work_done
;
3209 /* If no Tx and not enough Rx work done, exit the polling mode */
3210 if((!tx_cleaned
&& (work_done
== 0)) ||
3211 !netif_running(adapter
->netdev
)) {
3213 netif_rx_complete(poll_dev
);
3214 e1000_irq_enable(adapter
);
3223 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3224 * @adapter: board private structure
3228 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3229 struct e1000_tx_ring
*tx_ring
)
3231 struct net_device
*netdev
= adapter
->netdev
;
3232 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3233 struct e1000_buffer
*buffer_info
;
3234 unsigned int i
, eop
;
3235 boolean_t cleaned
= FALSE
;
3237 i
= tx_ring
->next_to_clean
;
3238 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3239 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3241 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3242 /* Premature writeback of Tx descriptors clear (free buffers
3243 * and unmap pci_mapping) previous_buffer_info */
3244 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
3245 e1000_unmap_and_free_tx_resource(adapter
,
3246 &tx_ring
->previous_buffer_info
);
3249 for(cleaned
= FALSE
; !cleaned
; ) {
3250 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3251 buffer_info
= &tx_ring
->buffer_info
[i
];
3252 cleaned
= (i
== eop
);
3255 if (!(netdev
->features
& NETIF_F_TSO
)) {
3257 e1000_unmap_and_free_tx_resource(adapter
,
3262 memcpy(&tx_ring
->previous_buffer_info
,
3264 sizeof(struct e1000_buffer
));
3265 memset(buffer_info
, 0,
3266 sizeof(struct e1000_buffer
));
3268 e1000_unmap_and_free_tx_resource(
3269 adapter
, buffer_info
);
3274 tx_desc
->buffer_addr
= 0;
3275 tx_desc
->lower
.data
= 0;
3276 tx_desc
->upper
.data
= 0;
3278 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
3283 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3284 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3287 tx_ring
->next_to_clean
= i
;
3289 spin_lock(&tx_ring
->tx_lock
);
3291 if(unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3292 netif_carrier_ok(netdev
)))
3293 netif_wake_queue(netdev
);
3295 spin_unlock(&tx_ring
->tx_lock
);
3297 if (adapter
->detect_tx_hung
) {
3298 /* Detect a transmit hang in hardware, this serializes the
3299 * check with the clearing of time_stamp and movement of i */
3300 adapter
->detect_tx_hung
= FALSE
;
3301 if (tx_ring
->buffer_info
[i
].dma
&&
3302 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+ HZ
)
3303 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3304 E1000_STATUS_TXOFF
)) {
3306 /* detected Tx unit hang */
3307 i
= tx_ring
->next_to_clean
;
3308 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3309 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3310 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3313 " next_to_use <%x>\n"
3314 " next_to_clean <%x>\n"
3315 "buffer_info[next_to_clean]\n"
3317 " time_stamp <%lx>\n"
3318 " next_to_watch <%x>\n"
3320 " next_to_watch.status <%x>\n",
3321 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3322 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3323 tx_ring
->next_to_use
,
3325 (unsigned long long)tx_ring
->buffer_info
[i
].dma
,
3326 tx_ring
->buffer_info
[i
].time_stamp
,
3329 eop_desc
->upper
.fields
.status
);
3330 netif_stop_queue(netdev
);
3334 if (unlikely(!(eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
3335 time_after(jiffies
, tx_ring
->previous_buffer_info
.time_stamp
+ HZ
)))
3336 e1000_unmap_and_free_tx_resource(
3337 adapter
, &tx_ring
->previous_buffer_info
);
3343 * e1000_rx_checksum - Receive Checksum Offload for 82543
3344 * @adapter: board private structure
3345 * @status_err: receive descriptor status and error fields
3346 * @csum: receive descriptor csum field
3347 * @sk_buff: socket buffer with received data
3351 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3352 uint32_t status_err
, uint32_t csum
,
3353 struct sk_buff
*skb
)
3355 uint16_t status
= (uint16_t)status_err
;
3356 uint8_t errors
= (uint8_t)(status_err
>> 24);
3357 skb
->ip_summed
= CHECKSUM_NONE
;
3359 /* 82543 or newer only */
3360 if(unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3361 /* Ignore Checksum bit is set */
3362 if(unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3363 /* TCP/UDP checksum error bit is set */
3364 if(unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3365 /* let the stack verify checksum errors */
3366 adapter
->hw_csum_err
++;
3369 /* TCP/UDP Checksum has not been calculated */
3370 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3371 if(!(status
& E1000_RXD_STAT_TCPCS
))
3374 if(!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3377 /* It must be a TCP or UDP packet with a valid checksum */
3378 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3379 /* TCP checksum is good */
3380 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3381 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3382 /* IP fragment with UDP payload */
3383 /* Hardware complements the payload checksum, so we undo it
3384 * and then put the value in host order for further stack use.
3386 csum
= ntohl(csum
^ 0xFFFF);
3388 skb
->ip_summed
= CHECKSUM_HW
;
3390 adapter
->hw_csum_good
++;
3394 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3395 * @adapter: board private structure
3399 #ifdef CONFIG_E1000_NAPI
3400 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3401 struct e1000_rx_ring
*rx_ring
,
3402 int *work_done
, int work_to_do
)
3404 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3405 struct e1000_rx_ring
*rx_ring
)
3408 struct net_device
*netdev
= adapter
->netdev
;
3409 struct pci_dev
*pdev
= adapter
->pdev
;
3410 struct e1000_rx_desc
*rx_desc
;
3411 struct e1000_buffer
*buffer_info
;
3412 struct sk_buff
*skb
;
3413 unsigned long flags
;
3417 boolean_t cleaned
= FALSE
;
3419 i
= rx_ring
->next_to_clean
;
3420 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3422 while(rx_desc
->status
& E1000_RXD_STAT_DD
) {
3423 buffer_info
= &rx_ring
->buffer_info
[i
];
3424 #ifdef CONFIG_E1000_NAPI
3425 if(*work_done
>= work_to_do
)
3431 pci_unmap_single(pdev
,
3433 buffer_info
->length
,
3434 PCI_DMA_FROMDEVICE
);
3436 skb
= buffer_info
->skb
;
3437 length
= le16_to_cpu(rx_desc
->length
);
3439 if(unlikely(!(rx_desc
->status
& E1000_RXD_STAT_EOP
))) {
3440 /* All receives must fit into a single buffer */
3441 E1000_DBG("%s: Receive packet consumed multiple"
3442 " buffers\n", netdev
->name
);
3443 dev_kfree_skb_irq(skb
);
3447 if(unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3448 last_byte
= *(skb
->data
+ length
- 1);
3449 if(TBI_ACCEPT(&adapter
->hw
, rx_desc
->status
,
3450 rx_desc
->errors
, length
, last_byte
)) {
3451 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3452 e1000_tbi_adjust_stats(&adapter
->hw
,
3455 spin_unlock_irqrestore(&adapter
->stats_lock
,
3459 dev_kfree_skb_irq(skb
);
3465 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
3467 /* Receive Checksum Offload */
3468 e1000_rx_checksum(adapter
,
3469 (uint32_t)(rx_desc
->status
) |
3470 ((uint32_t)(rx_desc
->errors
) << 24),
3471 rx_desc
->csum
, skb
);
3472 skb
->protocol
= eth_type_trans(skb
, netdev
);
3473 #ifdef CONFIG_E1000_NAPI
3474 if(unlikely(adapter
->vlgrp
&&
3475 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3476 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3477 le16_to_cpu(rx_desc
->special
) &
3478 E1000_RXD_SPC_VLAN_MASK
);
3480 netif_receive_skb(skb
);
3482 #else /* CONFIG_E1000_NAPI */
3483 if(unlikely(adapter
->vlgrp
&&
3484 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3485 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3486 le16_to_cpu(rx_desc
->special
) &
3487 E1000_RXD_SPC_VLAN_MASK
);
3491 #endif /* CONFIG_E1000_NAPI */
3492 netdev
->last_rx
= jiffies
;
3496 rx_desc
->status
= 0;
3497 buffer_info
->skb
= NULL
;
3498 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3500 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3502 rx_ring
->next_to_clean
= i
;
3503 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3509 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3510 * @adapter: board private structure
3514 #ifdef CONFIG_E1000_NAPI
3515 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3516 struct e1000_rx_ring
*rx_ring
,
3517 int *work_done
, int work_to_do
)
3519 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3520 struct e1000_rx_ring
*rx_ring
)
3523 union e1000_rx_desc_packet_split
*rx_desc
;
3524 struct net_device
*netdev
= adapter
->netdev
;
3525 struct pci_dev
*pdev
= adapter
->pdev
;
3526 struct e1000_buffer
*buffer_info
;
3527 struct e1000_ps_page
*ps_page
;
3528 struct e1000_ps_page_dma
*ps_page_dma
;
3529 struct sk_buff
*skb
;
3531 uint32_t length
, staterr
;
3532 boolean_t cleaned
= FALSE
;
3534 i
= rx_ring
->next_to_clean
;
3535 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3536 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3538 while(staterr
& E1000_RXD_STAT_DD
) {
3539 buffer_info
= &rx_ring
->buffer_info
[i
];
3540 ps_page
= &rx_ring
->ps_page
[i
];
3541 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3542 #ifdef CONFIG_E1000_NAPI
3543 if(unlikely(*work_done
>= work_to_do
))
3548 pci_unmap_single(pdev
, buffer_info
->dma
,
3549 buffer_info
->length
,
3550 PCI_DMA_FROMDEVICE
);
3552 skb
= buffer_info
->skb
;
3554 if(unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3555 E1000_DBG("%s: Packet Split buffers didn't pick up"
3556 " the full packet\n", netdev
->name
);
3557 dev_kfree_skb_irq(skb
);
3561 if(unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3562 dev_kfree_skb_irq(skb
);
3566 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3568 if(unlikely(!length
)) {
3569 E1000_DBG("%s: Last part of the packet spanning"
3570 " multiple descriptors\n", netdev
->name
);
3571 dev_kfree_skb_irq(skb
);
3576 skb_put(skb
, length
);
3578 for(j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3579 if(!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3582 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3583 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3584 ps_page_dma
->ps_page_dma
[j
] = 0;
3585 skb_shinfo(skb
)->frags
[j
].page
=
3586 ps_page
->ps_page
[j
];
3587 ps_page
->ps_page
[j
] = NULL
;
3588 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3589 skb_shinfo(skb
)->frags
[j
].size
= length
;
3590 skb_shinfo(skb
)->nr_frags
++;
3592 skb
->data_len
+= length
;
3595 e1000_rx_checksum(adapter
, staterr
,
3596 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3597 skb
->protocol
= eth_type_trans(skb
, netdev
);
3599 if(likely(rx_desc
->wb
.upper
.header_status
&
3600 E1000_RXDPS_HDRSTAT_HDRSP
)) {
3601 adapter
->rx_hdr_split
++;
3602 #ifdef HAVE_RX_ZERO_COPY
3603 skb_shinfo(skb
)->zero_copy
= TRUE
;
3606 #ifdef CONFIG_E1000_NAPI
3607 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3608 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3609 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3610 E1000_RXD_SPC_VLAN_MASK
);
3612 netif_receive_skb(skb
);
3614 #else /* CONFIG_E1000_NAPI */
3615 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3616 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3617 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3618 E1000_RXD_SPC_VLAN_MASK
);
3622 #endif /* CONFIG_E1000_NAPI */
3623 netdev
->last_rx
= jiffies
;
3627 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3628 buffer_info
->skb
= NULL
;
3629 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3631 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3632 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3634 rx_ring
->next_to_clean
= i
;
3635 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3641 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3642 * @adapter: address of board private structure
3646 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3647 struct e1000_rx_ring
*rx_ring
)
3649 struct net_device
*netdev
= adapter
->netdev
;
3650 struct pci_dev
*pdev
= adapter
->pdev
;
3651 struct e1000_rx_desc
*rx_desc
;
3652 struct e1000_buffer
*buffer_info
;
3653 struct sk_buff
*skb
;
3655 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3657 i
= rx_ring
->next_to_use
;
3658 buffer_info
= &rx_ring
->buffer_info
[i
];
3660 while(!buffer_info
->skb
) {
3661 skb
= dev_alloc_skb(bufsz
);
3663 if(unlikely(!skb
)) {
3664 /* Better luck next round */
3668 /* Fix for errata 23, can't cross 64kB boundary */
3669 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3670 struct sk_buff
*oldskb
= skb
;
3671 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3672 "at %p\n", bufsz
, skb
->data
);
3673 /* Try again, without freeing the previous */
3674 skb
= dev_alloc_skb(bufsz
);
3675 /* Failed allocation, critical failure */
3677 dev_kfree_skb(oldskb
);
3681 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3684 dev_kfree_skb(oldskb
);
3685 break; /* while !buffer_info->skb */
3687 /* Use new allocation */
3688 dev_kfree_skb(oldskb
);
3691 /* Make buffer alignment 2 beyond a 16 byte boundary
3692 * this will result in a 16 byte aligned IP header after
3693 * the 14 byte MAC header is removed
3695 skb_reserve(skb
, NET_IP_ALIGN
);
3699 buffer_info
->skb
= skb
;
3700 buffer_info
->length
= adapter
->rx_buffer_len
;
3701 buffer_info
->dma
= pci_map_single(pdev
,
3703 adapter
->rx_buffer_len
,
3704 PCI_DMA_FROMDEVICE
);
3706 /* Fix for errata 23, can't cross 64kB boundary */
3707 if (!e1000_check_64k_bound(adapter
,
3708 (void *)(unsigned long)buffer_info
->dma
,
3709 adapter
->rx_buffer_len
)) {
3710 DPRINTK(RX_ERR
, ERR
,
3711 "dma align check failed: %u bytes at %p\n",
3712 adapter
->rx_buffer_len
,
3713 (void *)(unsigned long)buffer_info
->dma
);
3715 buffer_info
->skb
= NULL
;
3717 pci_unmap_single(pdev
, buffer_info
->dma
,
3718 adapter
->rx_buffer_len
,
3719 PCI_DMA_FROMDEVICE
);
3721 break; /* while !buffer_info->skb */
3723 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3724 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3726 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3727 /* Force memory writes to complete before letting h/w
3728 * know there are new descriptors to fetch. (Only
3729 * applicable for weak-ordered memory model archs,
3730 * such as IA-64). */
3732 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3735 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3736 buffer_info
= &rx_ring
->buffer_info
[i
];
3739 rx_ring
->next_to_use
= i
;
3743 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3744 * @adapter: address of board private structure
3748 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3749 struct e1000_rx_ring
*rx_ring
)
3751 struct net_device
*netdev
= adapter
->netdev
;
3752 struct pci_dev
*pdev
= adapter
->pdev
;
3753 union e1000_rx_desc_packet_split
*rx_desc
;
3754 struct e1000_buffer
*buffer_info
;
3755 struct e1000_ps_page
*ps_page
;
3756 struct e1000_ps_page_dma
*ps_page_dma
;
3757 struct sk_buff
*skb
;
3760 i
= rx_ring
->next_to_use
;
3761 buffer_info
= &rx_ring
->buffer_info
[i
];
3762 ps_page
= &rx_ring
->ps_page
[i
];
3763 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3765 while(!buffer_info
->skb
) {
3766 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3768 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3769 if (j
< adapter
->rx_ps_pages
) {
3770 if (likely(!ps_page
->ps_page
[j
])) {
3771 ps_page
->ps_page
[j
] =
3772 alloc_page(GFP_ATOMIC
);
3773 if (unlikely(!ps_page
->ps_page
[j
]))
3775 ps_page_dma
->ps_page_dma
[j
] =
3777 ps_page
->ps_page
[j
],
3779 PCI_DMA_FROMDEVICE
);
3781 /* Refresh the desc even if buffer_addrs didn't
3782 * change because each write-back erases
3785 rx_desc
->read
.buffer_addr
[j
+1] =
3786 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3788 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3791 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3796 /* Make buffer alignment 2 beyond a 16 byte boundary
3797 * this will result in a 16 byte aligned IP header after
3798 * the 14 byte MAC header is removed
3800 skb_reserve(skb
, NET_IP_ALIGN
);
3804 buffer_info
->skb
= skb
;
3805 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3806 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3807 adapter
->rx_ps_bsize0
,
3808 PCI_DMA_FROMDEVICE
);
3810 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3812 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3813 /* Force memory writes to complete before letting h/w
3814 * know there are new descriptors to fetch. (Only
3815 * applicable for weak-ordered memory model archs,
3816 * such as IA-64). */
3818 /* Hardware increments by 16 bytes, but packet split
3819 * descriptors are 32 bytes...so we increment tail
3822 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3825 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3826 buffer_info
= &rx_ring
->buffer_info
[i
];
3827 ps_page
= &rx_ring
->ps_page
[i
];
3828 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3832 rx_ring
->next_to_use
= i
;
3836 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3841 e1000_smartspeed(struct e1000_adapter
*adapter
)
3843 uint16_t phy_status
;
3846 if((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3847 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3850 if(adapter
->smartspeed
== 0) {
3851 /* If Master/Slave config fault is asserted twice,
3852 * we assume back-to-back */
3853 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3854 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3855 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3856 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3857 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3858 if(phy_ctrl
& CR_1000T_MS_ENABLE
) {
3859 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3860 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3862 adapter
->smartspeed
++;
3863 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3864 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3866 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3867 MII_CR_RESTART_AUTO_NEG
);
3868 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3873 } else if(adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3874 /* If still no link, perhaps using 2/3 pair cable */
3875 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3876 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3877 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3878 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3879 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3880 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3881 MII_CR_RESTART_AUTO_NEG
);
3882 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3885 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3886 if(adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3887 adapter
->smartspeed
= 0;
3898 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3904 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3918 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3920 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3921 struct mii_ioctl_data
*data
= if_mii(ifr
);
3925 unsigned long flags
;
3927 if(adapter
->hw
.media_type
!= e1000_media_type_copper
)
3932 data
->phy_id
= adapter
->hw
.phy_addr
;
3935 if(!capable(CAP_NET_ADMIN
))
3937 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3938 if(e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
3940 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3943 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3946 if(!capable(CAP_NET_ADMIN
))
3948 if(data
->reg_num
& ~(0x1F))
3950 mii_reg
= data
->val_in
;
3951 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3952 if(e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
3954 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3957 if(adapter
->hw
.phy_type
== e1000_phy_m88
) {
3958 switch (data
->reg_num
) {
3960 if(mii_reg
& MII_CR_POWER_DOWN
)
3962 if(mii_reg
& MII_CR_AUTO_NEG_EN
) {
3963 adapter
->hw
.autoneg
= 1;
3964 adapter
->hw
.autoneg_advertised
= 0x2F;
3967 spddplx
= SPEED_1000
;
3968 else if (mii_reg
& 0x2000)
3969 spddplx
= SPEED_100
;
3972 spddplx
+= (mii_reg
& 0x100)
3975 retval
= e1000_set_spd_dplx(adapter
,
3978 spin_unlock_irqrestore(
3979 &adapter
->stats_lock
,
3984 if(netif_running(adapter
->netdev
)) {
3985 e1000_down(adapter
);
3988 e1000_reset(adapter
);
3990 case M88E1000_PHY_SPEC_CTRL
:
3991 case M88E1000_EXT_PHY_SPEC_CTRL
:
3992 if(e1000_phy_reset(&adapter
->hw
)) {
3993 spin_unlock_irqrestore(
3994 &adapter
->stats_lock
, flags
);
4000 switch (data
->reg_num
) {
4002 if(mii_reg
& MII_CR_POWER_DOWN
)
4004 if(netif_running(adapter
->netdev
)) {
4005 e1000_down(adapter
);
4008 e1000_reset(adapter
);
4012 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4017 return E1000_SUCCESS
;
4021 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4023 struct e1000_adapter
*adapter
= hw
->back
;
4024 int ret_val
= pci_set_mwi(adapter
->pdev
);
4027 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4031 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4033 struct e1000_adapter
*adapter
= hw
->back
;
4035 pci_clear_mwi(adapter
->pdev
);
4039 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4041 struct e1000_adapter
*adapter
= hw
->back
;
4043 pci_read_config_word(adapter
->pdev
, reg
, value
);
4047 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4049 struct e1000_adapter
*adapter
= hw
->back
;
4051 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4055 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4061 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4067 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4069 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4070 uint32_t ctrl
, rctl
;
4072 e1000_irq_disable(adapter
);
4073 adapter
->vlgrp
= grp
;
4076 /* enable VLAN tag insert/strip */
4077 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4078 ctrl
|= E1000_CTRL_VME
;
4079 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4081 /* enable VLAN receive filtering */
4082 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4083 rctl
|= E1000_RCTL_VFE
;
4084 rctl
&= ~E1000_RCTL_CFIEN
;
4085 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4086 e1000_update_mng_vlan(adapter
);
4088 /* disable VLAN tag insert/strip */
4089 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4090 ctrl
&= ~E1000_CTRL_VME
;
4091 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4093 /* disable VLAN filtering */
4094 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4095 rctl
&= ~E1000_RCTL_VFE
;
4096 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4097 if(adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4098 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4099 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4103 e1000_irq_enable(adapter
);
4107 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4109 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4110 uint32_t vfta
, index
;
4111 if((adapter
->hw
.mng_cookie
.status
&
4112 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4113 (vid
== adapter
->mng_vlan_id
))
4115 /* add VID to filter table */
4116 index
= (vid
>> 5) & 0x7F;
4117 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4118 vfta
|= (1 << (vid
& 0x1F));
4119 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4123 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4125 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4126 uint32_t vfta
, index
;
4128 e1000_irq_disable(adapter
);
4131 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4133 e1000_irq_enable(adapter
);
4135 if((adapter
->hw
.mng_cookie
.status
&
4136 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4137 (vid
== adapter
->mng_vlan_id
))
4139 /* remove VID from filter table */
4140 index
= (vid
>> 5) & 0x7F;
4141 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4142 vfta
&= ~(1 << (vid
& 0x1F));
4143 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4147 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4149 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4151 if(adapter
->vlgrp
) {
4153 for(vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4154 if(!adapter
->vlgrp
->vlan_devices
[vid
])
4156 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4162 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4164 adapter
->hw
.autoneg
= 0;
4166 /* Fiber NICs only allow 1000 gbps Full duplex */
4167 if((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4168 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4169 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4174 case SPEED_10
+ DUPLEX_HALF
:
4175 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4177 case SPEED_10
+ DUPLEX_FULL
:
4178 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4180 case SPEED_100
+ DUPLEX_HALF
:
4181 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4183 case SPEED_100
+ DUPLEX_FULL
:
4184 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4186 case SPEED_1000
+ DUPLEX_FULL
:
4187 adapter
->hw
.autoneg
= 1;
4188 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4190 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4192 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4200 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4202 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4203 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4204 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
, swsm
;
4205 uint32_t wufc
= adapter
->wol
;
4207 netif_device_detach(netdev
);
4209 if(netif_running(netdev
))
4210 e1000_down(adapter
);
4212 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4213 if(status
& E1000_STATUS_LU
)
4214 wufc
&= ~E1000_WUFC_LNKC
;
4217 e1000_setup_rctl(adapter
);
4218 e1000_set_multi(netdev
);
4220 /* turn on all-multi mode if wake on multicast is enabled */
4221 if(adapter
->wol
& E1000_WUFC_MC
) {
4222 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4223 rctl
|= E1000_RCTL_MPE
;
4224 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4227 if(adapter
->hw
.mac_type
>= e1000_82540
) {
4228 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4229 /* advertise wake from D3Cold */
4230 #define E1000_CTRL_ADVD3WUC 0x00100000
4231 /* phy power management enable */
4232 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4233 ctrl
|= E1000_CTRL_ADVD3WUC
|
4234 E1000_CTRL_EN_PHY_PWR_MGMT
;
4235 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4238 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
4239 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4240 /* keep the laser running in D3 */
4241 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4242 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4243 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4246 /* Allow time for pending master requests to run */
4247 e1000_disable_pciex_master(&adapter
->hw
);
4249 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4250 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4251 pci_enable_wake(pdev
, 3, 1);
4252 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4254 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4255 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4256 pci_enable_wake(pdev
, 3, 0);
4257 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4260 pci_save_state(pdev
);
4262 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4263 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4264 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4265 if(manc
& E1000_MANC_SMBUS_EN
) {
4266 manc
|= E1000_MANC_ARP_EN
;
4267 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4268 pci_enable_wake(pdev
, 3, 1);
4269 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4273 switch(adapter
->hw
.mac_type
) {
4276 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4277 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4278 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
4281 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4282 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4283 swsm
& ~E1000_SWSM_DRV_LOAD
);
4289 pci_disable_device(pdev
);
4290 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4296 e1000_resume(struct pci_dev
*pdev
)
4298 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4299 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4300 uint32_t manc
, ret_val
, swsm
;
4303 pci_set_power_state(pdev
, PCI_D0
);
4304 pci_restore_state(pdev
);
4305 ret_val
= pci_enable_device(pdev
);
4306 pci_set_master(pdev
);
4308 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4309 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4311 e1000_reset(adapter
);
4312 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4314 if(netif_running(netdev
))
4317 netif_device_attach(netdev
);
4319 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4320 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4321 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4322 manc
&= ~(E1000_MANC_ARP_EN
);
4323 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4326 switch(adapter
->hw
.mac_type
) {
4329 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4330 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4331 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
4334 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4335 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4336 swsm
| E1000_SWSM_DRV_LOAD
);
4345 #ifdef CONFIG_NET_POLL_CONTROLLER
4347 * Polling 'interrupt' - used by things like netconsole to send skbs
4348 * without having to re-enable interrupts. It's not called while
4349 * the interrupt routine is executing.
4352 e1000_netpoll(struct net_device
*netdev
)
4354 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4355 disable_irq(adapter
->pdev
->irq
);
4356 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4357 e1000_clean_tx_irq(adapter
, adapter
->tx_ring
);
4358 enable_irq(adapter
->pdev
->irq
);