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 char e1000_driver_string
[] = "Intel(R) PRO/1000 Network Driver";
41 #ifndef CONFIG_E1000_NAPI
44 #define DRIVERNAPI "-NAPI"
46 #define DRV_VERSION "6.0.60-k2"DRIVERNAPI
47 char e1000_driver_version
[] = DRV_VERSION
;
48 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(0x1075),
84 INTEL_E1000_ETHERNET_DEVICE(0x1076),
85 INTEL_E1000_ETHERNET_DEVICE(0x1077),
86 INTEL_E1000_ETHERNET_DEVICE(0x1078),
87 INTEL_E1000_ETHERNET_DEVICE(0x1079),
88 INTEL_E1000_ETHERNET_DEVICE(0x107A),
89 INTEL_E1000_ETHERNET_DEVICE(0x107B),
90 INTEL_E1000_ETHERNET_DEVICE(0x107C),
91 INTEL_E1000_ETHERNET_DEVICE(0x108A),
92 INTEL_E1000_ETHERNET_DEVICE(0x108B),
93 INTEL_E1000_ETHERNET_DEVICE(0x108C),
94 INTEL_E1000_ETHERNET_DEVICE(0x1099),
95 /* required last entry */
99 MODULE_DEVICE_TABLE(pci
, e1000_pci_tbl
);
101 int e1000_up(struct e1000_adapter
*adapter
);
102 void e1000_down(struct e1000_adapter
*adapter
);
103 void e1000_reset(struct e1000_adapter
*adapter
);
104 int e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
);
105 int e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
);
106 int e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
);
107 void e1000_free_all_tx_resources(struct e1000_adapter
*adapter
);
108 void e1000_free_all_rx_resources(struct e1000_adapter
*adapter
);
109 int e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
110 struct e1000_tx_ring
*txdr
);
111 int e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
112 struct e1000_rx_ring
*rxdr
);
113 void e1000_free_tx_resources(struct e1000_adapter
*adapter
,
114 struct e1000_tx_ring
*tx_ring
);
115 void e1000_free_rx_resources(struct e1000_adapter
*adapter
,
116 struct e1000_rx_ring
*rx_ring
);
117 void e1000_update_stats(struct e1000_adapter
*adapter
);
119 /* Local Function Prototypes */
121 static int e1000_init_module(void);
122 static void e1000_exit_module(void);
123 static int e1000_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
);
124 static void __devexit
e1000_remove(struct pci_dev
*pdev
);
125 static int e1000_alloc_queues(struct e1000_adapter
*adapter
);
126 #ifdef CONFIG_E1000_MQ
127 static void e1000_setup_queue_mapping(struct e1000_adapter
*adapter
);
129 static int e1000_sw_init(struct e1000_adapter
*adapter
);
130 static int e1000_open(struct net_device
*netdev
);
131 static int e1000_close(struct net_device
*netdev
);
132 static void e1000_configure_tx(struct e1000_adapter
*adapter
);
133 static void e1000_configure_rx(struct e1000_adapter
*adapter
);
134 static void e1000_setup_rctl(struct e1000_adapter
*adapter
);
135 static void e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
);
136 static void e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
);
137 static void e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
138 struct e1000_tx_ring
*tx_ring
);
139 static void e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
140 struct e1000_rx_ring
*rx_ring
);
141 static void e1000_set_multi(struct net_device
*netdev
);
142 static void e1000_update_phy_info(unsigned long data
);
143 static void e1000_watchdog(unsigned long data
);
144 static void e1000_watchdog_task(struct e1000_adapter
*adapter
);
145 static void e1000_82547_tx_fifo_stall(unsigned long data
);
146 static int e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
);
147 static struct net_device_stats
* e1000_get_stats(struct net_device
*netdev
);
148 static int e1000_change_mtu(struct net_device
*netdev
, int new_mtu
);
149 static int e1000_set_mac(struct net_device
*netdev
, void *p
);
150 static irqreturn_t
e1000_intr(int irq
, void *data
, struct pt_regs
*regs
);
151 static boolean_t
e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
152 struct e1000_tx_ring
*tx_ring
);
153 #ifdef CONFIG_E1000_NAPI
154 static int e1000_clean(struct net_device
*poll_dev
, int *budget
);
155 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
156 struct e1000_rx_ring
*rx_ring
,
157 int *work_done
, int work_to_do
);
158 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
159 struct e1000_rx_ring
*rx_ring
,
160 int *work_done
, int work_to_do
);
162 static boolean_t
e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
163 struct e1000_rx_ring
*rx_ring
);
164 static boolean_t
e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
165 struct e1000_rx_ring
*rx_ring
);
167 static void e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
168 struct e1000_rx_ring
*rx_ring
);
169 static void e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
170 struct e1000_rx_ring
*rx_ring
);
171 static int e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
);
172 static int e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
,
174 void e1000_set_ethtool_ops(struct net_device
*netdev
);
175 static void e1000_enter_82542_rst(struct e1000_adapter
*adapter
);
176 static void e1000_leave_82542_rst(struct e1000_adapter
*adapter
);
177 static void e1000_tx_timeout(struct net_device
*dev
);
178 static void e1000_tx_timeout_task(struct net_device
*dev
);
179 static void e1000_smartspeed(struct e1000_adapter
*adapter
);
180 static inline int e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
,
181 struct sk_buff
*skb
);
183 static void e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
);
184 static void e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
);
185 static void e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
);
186 static void e1000_restore_vlan(struct e1000_adapter
*adapter
);
188 static int e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
);
190 static int e1000_resume(struct pci_dev
*pdev
);
193 #ifdef CONFIG_NET_POLL_CONTROLLER
194 /* for netdump / net console */
195 static void e1000_netpoll (struct net_device
*netdev
);
198 #ifdef CONFIG_E1000_MQ
199 /* for multiple Rx queues */
200 void e1000_rx_schedule(void *data
);
203 /* Exported from other modules */
205 extern void e1000_check_options(struct e1000_adapter
*adapter
);
207 static struct pci_driver e1000_driver
= {
208 .name
= e1000_driver_name
,
209 .id_table
= e1000_pci_tbl
,
210 .probe
= e1000_probe
,
211 .remove
= __devexit_p(e1000_remove
),
212 /* Power Managment Hooks */
214 .suspend
= e1000_suspend
,
215 .resume
= e1000_resume
219 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
220 MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
221 MODULE_LICENSE("GPL");
222 MODULE_VERSION(DRV_VERSION
);
224 static int debug
= NETIF_MSG_DRV
| NETIF_MSG_PROBE
;
225 module_param(debug
, int, 0);
226 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
229 * e1000_init_module - Driver Registration Routine
231 * e1000_init_module is the first routine called when the driver is
232 * loaded. All it does is register with the PCI subsystem.
236 e1000_init_module(void)
239 printk(KERN_INFO
"%s - version %s\n",
240 e1000_driver_string
, e1000_driver_version
);
242 printk(KERN_INFO
"%s\n", e1000_copyright
);
244 ret
= pci_module_init(&e1000_driver
);
249 module_init(e1000_init_module
);
252 * e1000_exit_module - Driver Exit Cleanup Routine
254 * e1000_exit_module is called just before the driver is removed
259 e1000_exit_module(void)
261 pci_unregister_driver(&e1000_driver
);
264 module_exit(e1000_exit_module
);
267 * e1000_irq_disable - Mask off interrupt generation on the NIC
268 * @adapter: board private structure
272 e1000_irq_disable(struct e1000_adapter
*adapter
)
274 atomic_inc(&adapter
->irq_sem
);
275 E1000_WRITE_REG(&adapter
->hw
, IMC
, ~0);
276 E1000_WRITE_FLUSH(&adapter
->hw
);
277 synchronize_irq(adapter
->pdev
->irq
);
281 * e1000_irq_enable - Enable default interrupt generation settings
282 * @adapter: board private structure
286 e1000_irq_enable(struct e1000_adapter
*adapter
)
288 if(likely(atomic_dec_and_test(&adapter
->irq_sem
))) {
289 E1000_WRITE_REG(&adapter
->hw
, IMS
, IMS_ENABLE_MASK
);
290 E1000_WRITE_FLUSH(&adapter
->hw
);
294 e1000_update_mng_vlan(struct e1000_adapter
*adapter
)
296 struct net_device
*netdev
= adapter
->netdev
;
297 uint16_t vid
= adapter
->hw
.mng_cookie
.vlan_id
;
298 uint16_t old_vid
= adapter
->mng_vlan_id
;
300 if(!adapter
->vlgrp
->vlan_devices
[vid
]) {
301 if(adapter
->hw
.mng_cookie
.status
&
302 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) {
303 e1000_vlan_rx_add_vid(netdev
, vid
);
304 adapter
->mng_vlan_id
= vid
;
306 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
308 if((old_vid
!= (uint16_t)E1000_MNG_VLAN_NONE
) &&
310 !adapter
->vlgrp
->vlan_devices
[old_vid
])
311 e1000_vlan_rx_kill_vid(netdev
, old_vid
);
317 e1000_up(struct e1000_adapter
*adapter
)
319 struct net_device
*netdev
= adapter
->netdev
;
322 /* hardware has been reset, we need to reload some things */
324 /* Reset the PHY if it was previously powered down */
325 if(adapter
->hw
.media_type
== e1000_media_type_copper
) {
327 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
328 if(mii_reg
& MII_CR_POWER_DOWN
)
329 e1000_phy_reset(&adapter
->hw
);
332 e1000_set_multi(netdev
);
334 e1000_restore_vlan(adapter
);
336 e1000_configure_tx(adapter
);
337 e1000_setup_rctl(adapter
);
338 e1000_configure_rx(adapter
);
339 for (i
= 0; i
< adapter
->num_queues
; i
++)
340 adapter
->alloc_rx_buf(adapter
, &adapter
->rx_ring
[i
]);
342 #ifdef CONFIG_PCI_MSI
343 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
344 adapter
->have_msi
= TRUE
;
345 if((err
= pci_enable_msi(adapter
->pdev
))) {
347 "Unable to allocate MSI interrupt Error: %d\n", err
);
348 adapter
->have_msi
= FALSE
;
352 if((err
= request_irq(adapter
->pdev
->irq
, &e1000_intr
,
353 SA_SHIRQ
| SA_SAMPLE_RANDOM
,
354 netdev
->name
, netdev
))) {
356 "Unable to allocate interrupt Error: %d\n", err
);
360 mod_timer(&adapter
->watchdog_timer
, jiffies
);
362 #ifdef CONFIG_E1000_NAPI
363 netif_poll_enable(netdev
);
365 e1000_irq_enable(adapter
);
371 e1000_down(struct e1000_adapter
*adapter
)
373 struct net_device
*netdev
= adapter
->netdev
;
375 e1000_irq_disable(adapter
);
376 #ifdef CONFIG_E1000_MQ
377 while (atomic_read(&adapter
->rx_sched_call_data
.count
) != 0);
379 free_irq(adapter
->pdev
->irq
, netdev
);
380 #ifdef CONFIG_PCI_MSI
381 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
&&
382 adapter
->have_msi
== TRUE
)
383 pci_disable_msi(adapter
->pdev
);
385 del_timer_sync(&adapter
->tx_fifo_stall_timer
);
386 del_timer_sync(&adapter
->watchdog_timer
);
387 del_timer_sync(&adapter
->phy_info_timer
);
389 #ifdef CONFIG_E1000_NAPI
390 netif_poll_disable(netdev
);
392 adapter
->link_speed
= 0;
393 adapter
->link_duplex
= 0;
394 netif_carrier_off(netdev
);
395 netif_stop_queue(netdev
);
397 e1000_reset(adapter
);
398 e1000_clean_all_tx_rings(adapter
);
399 e1000_clean_all_rx_rings(adapter
);
401 /* If WoL is not enabled
402 * and management mode is not IAMT
403 * Power down the PHY so no link is implied when interface is down */
404 if(!adapter
->wol
&& adapter
->hw
.mac_type
>= e1000_82540
&&
405 adapter
->hw
.media_type
== e1000_media_type_copper
&&
406 !e1000_check_mng_mode(&adapter
->hw
) &&
407 !(E1000_READ_REG(&adapter
->hw
, MANC
) & E1000_MANC_SMBUS_EN
)) {
409 e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &mii_reg
);
410 mii_reg
|= MII_CR_POWER_DOWN
;
411 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, mii_reg
);
417 e1000_reset(struct e1000_adapter
*adapter
)
419 struct net_device
*netdev
= adapter
->netdev
;
421 uint16_t fc_high_water_mark
= E1000_FC_HIGH_DIFF
;
422 uint16_t fc_low_water_mark
= E1000_FC_LOW_DIFF
;
424 /* Repartition Pba for greater than 9k mtu
425 * To take effect CTRL.RST is required.
428 switch (adapter
->hw
.mac_type
) {
430 case e1000_82547_rev_2
:
445 if((adapter
->hw
.mac_type
!= e1000_82573
) &&
446 (adapter
->rx_buffer_len
> E1000_RXBUFFER_8192
)) {
447 pba
-= 8; /* allocate more FIFO for Tx */
448 /* send an XOFF when there is enough space in the
449 * Rx FIFO to hold one extra full size Rx packet
451 fc_high_water_mark
= netdev
->mtu
+ ENET_HEADER_SIZE
+
452 ETHERNET_FCS_SIZE
+ 1;
453 fc_low_water_mark
= fc_high_water_mark
+ 8;
457 if(adapter
->hw
.mac_type
== e1000_82547
) {
458 adapter
->tx_fifo_head
= 0;
459 adapter
->tx_head_addr
= pba
<< E1000_TX_HEAD_ADDR_SHIFT
;
460 adapter
->tx_fifo_size
=
461 (E1000_PBA_40K
- pba
) << E1000_PBA_BYTES_SHIFT
;
462 atomic_set(&adapter
->tx_fifo_stall
, 0);
465 E1000_WRITE_REG(&adapter
->hw
, PBA
, pba
);
467 /* flow control settings */
468 adapter
->hw
.fc_high_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
470 adapter
->hw
.fc_low_water
= (pba
<< E1000_PBA_BYTES_SHIFT
) -
472 adapter
->hw
.fc_pause_time
= E1000_FC_PAUSE_TIME
;
473 adapter
->hw
.fc_send_xon
= 1;
474 adapter
->hw
.fc
= adapter
->hw
.original_fc
;
476 /* Allow time for pending master requests to run */
477 e1000_reset_hw(&adapter
->hw
);
478 if(adapter
->hw
.mac_type
>= e1000_82544
)
479 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
480 if(e1000_init_hw(&adapter
->hw
))
481 DPRINTK(PROBE
, ERR
, "Hardware Error\n");
482 e1000_update_mng_vlan(adapter
);
483 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
484 E1000_WRITE_REG(&adapter
->hw
, VET
, ETHERNET_IEEE_VLAN_TYPE
);
486 e1000_reset_adaptive(&adapter
->hw
);
487 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
488 if (adapter
->en_mng_pt
) {
489 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
490 manc
|= (E1000_MANC_ARP_EN
| E1000_MANC_EN_MNG2HOST
);
491 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
496 * e1000_probe - Device Initialization Routine
497 * @pdev: PCI device information struct
498 * @ent: entry in e1000_pci_tbl
500 * Returns 0 on success, negative on failure
502 * e1000_probe initializes an adapter identified by a pci_dev structure.
503 * The OS initialization, configuring of the adapter private structure,
504 * and a hardware reset occur.
508 e1000_probe(struct pci_dev
*pdev
,
509 const struct pci_device_id
*ent
)
511 struct net_device
*netdev
;
512 struct e1000_adapter
*adapter
;
513 unsigned long mmio_start
, mmio_len
;
517 static int cards_found
= 0;
518 int i
, err
, pci_using_dac
;
519 uint16_t eeprom_data
;
520 uint16_t eeprom_apme_mask
= E1000_EEPROM_APME
;
521 if((err
= pci_enable_device(pdev
)))
524 if(!(err
= pci_set_dma_mask(pdev
, DMA_64BIT_MASK
))) {
527 if((err
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
))) {
528 E1000_ERR("No usable DMA configuration, aborting\n");
534 if((err
= pci_request_regions(pdev
, e1000_driver_name
)))
537 pci_set_master(pdev
);
539 netdev
= alloc_etherdev(sizeof(struct e1000_adapter
));
542 goto err_alloc_etherdev
;
545 SET_MODULE_OWNER(netdev
);
546 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
548 pci_set_drvdata(pdev
, netdev
);
549 adapter
= netdev_priv(netdev
);
550 adapter
->netdev
= netdev
;
551 adapter
->pdev
= pdev
;
552 adapter
->hw
.back
= adapter
;
553 adapter
->msg_enable
= (1 << debug
) - 1;
555 mmio_start
= pci_resource_start(pdev
, BAR_0
);
556 mmio_len
= pci_resource_len(pdev
, BAR_0
);
558 adapter
->hw
.hw_addr
= ioremap(mmio_start
, mmio_len
);
559 if(!adapter
->hw
.hw_addr
) {
564 for(i
= BAR_1
; i
<= BAR_5
; i
++) {
565 if(pci_resource_len(pdev
, i
) == 0)
567 if(pci_resource_flags(pdev
, i
) & IORESOURCE_IO
) {
568 adapter
->hw
.io_base
= pci_resource_start(pdev
, i
);
573 netdev
->open
= &e1000_open
;
574 netdev
->stop
= &e1000_close
;
575 netdev
->hard_start_xmit
= &e1000_xmit_frame
;
576 netdev
->get_stats
= &e1000_get_stats
;
577 netdev
->set_multicast_list
= &e1000_set_multi
;
578 netdev
->set_mac_address
= &e1000_set_mac
;
579 netdev
->change_mtu
= &e1000_change_mtu
;
580 netdev
->do_ioctl
= &e1000_ioctl
;
581 e1000_set_ethtool_ops(netdev
);
582 netdev
->tx_timeout
= &e1000_tx_timeout
;
583 netdev
->watchdog_timeo
= 5 * HZ
;
584 #ifdef CONFIG_E1000_NAPI
585 netdev
->poll
= &e1000_clean
;
588 netdev
->vlan_rx_register
= e1000_vlan_rx_register
;
589 netdev
->vlan_rx_add_vid
= e1000_vlan_rx_add_vid
;
590 netdev
->vlan_rx_kill_vid
= e1000_vlan_rx_kill_vid
;
591 #ifdef CONFIG_NET_POLL_CONTROLLER
592 netdev
->poll_controller
= e1000_netpoll
;
594 strcpy(netdev
->name
, pci_name(pdev
));
596 netdev
->mem_start
= mmio_start
;
597 netdev
->mem_end
= mmio_start
+ mmio_len
;
598 netdev
->base_addr
= adapter
->hw
.io_base
;
600 adapter
->bd_number
= cards_found
;
602 /* setup the private structure */
604 if((err
= e1000_sw_init(adapter
)))
607 if((err
= e1000_check_phy_reset_block(&adapter
->hw
)))
608 DPRINTK(PROBE
, INFO
, "PHY reset is blocked due to SOL/IDER session.\n");
610 if(adapter
->hw
.mac_type
>= e1000_82543
) {
611 netdev
->features
= NETIF_F_SG
|
615 NETIF_F_HW_VLAN_FILTER
;
619 if((adapter
->hw
.mac_type
>= e1000_82544
) &&
620 (adapter
->hw
.mac_type
!= e1000_82547
))
621 netdev
->features
|= NETIF_F_TSO
;
623 #ifdef NETIF_F_TSO_IPV6
624 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
)
625 netdev
->features
|= NETIF_F_TSO_IPV6
;
629 netdev
->features
|= NETIF_F_HIGHDMA
;
631 /* hard_start_xmit is safe against parallel locking */
632 netdev
->features
|= NETIF_F_LLTX
;
634 adapter
->en_mng_pt
= e1000_enable_mng_pass_thru(&adapter
->hw
);
636 /* before reading the EEPROM, reset the controller to
637 * put the device in a known good starting state */
639 e1000_reset_hw(&adapter
->hw
);
641 /* make sure the EEPROM is good */
643 if(e1000_validate_eeprom_checksum(&adapter
->hw
) < 0) {
644 DPRINTK(PROBE
, ERR
, "The EEPROM Checksum Is Not Valid\n");
649 /* copy the MAC address out of the EEPROM */
651 if(e1000_read_mac_addr(&adapter
->hw
))
652 DPRINTK(PROBE
, ERR
, "EEPROM Read Error\n");
653 memcpy(netdev
->dev_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
654 memcpy(netdev
->perm_addr
, adapter
->hw
.mac_addr
, netdev
->addr_len
);
656 if(!is_valid_ether_addr(netdev
->perm_addr
)) {
657 DPRINTK(PROBE
, ERR
, "Invalid MAC Address\n");
662 e1000_read_part_num(&adapter
->hw
, &(adapter
->part_num
));
664 e1000_get_bus_info(&adapter
->hw
);
666 init_timer(&adapter
->tx_fifo_stall_timer
);
667 adapter
->tx_fifo_stall_timer
.function
= &e1000_82547_tx_fifo_stall
;
668 adapter
->tx_fifo_stall_timer
.data
= (unsigned long) adapter
;
670 init_timer(&adapter
->watchdog_timer
);
671 adapter
->watchdog_timer
.function
= &e1000_watchdog
;
672 adapter
->watchdog_timer
.data
= (unsigned long) adapter
;
674 INIT_WORK(&adapter
->watchdog_task
,
675 (void (*)(void *))e1000_watchdog_task
, adapter
);
677 init_timer(&adapter
->phy_info_timer
);
678 adapter
->phy_info_timer
.function
= &e1000_update_phy_info
;
679 adapter
->phy_info_timer
.data
= (unsigned long) adapter
;
681 INIT_WORK(&adapter
->tx_timeout_task
,
682 (void (*)(void *))e1000_tx_timeout_task
, netdev
);
684 /* we're going to reset, so assume we have no link for now */
686 netif_carrier_off(netdev
);
687 netif_stop_queue(netdev
);
689 e1000_check_options(adapter
);
691 /* Initial Wake on LAN setting
692 * If APM wake is enabled in the EEPROM,
693 * enable the ACPI Magic Packet filter
696 switch(adapter
->hw
.mac_type
) {
697 case e1000_82542_rev2_0
:
698 case e1000_82542_rev2_1
:
702 e1000_read_eeprom(&adapter
->hw
,
703 EEPROM_INIT_CONTROL2_REG
, 1, &eeprom_data
);
704 eeprom_apme_mask
= E1000_EEPROM_82544_APM
;
707 case e1000_82546_rev_3
:
708 if((E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_FUNC_1
)
709 && (adapter
->hw
.media_type
== e1000_media_type_copper
)) {
710 e1000_read_eeprom(&adapter
->hw
,
711 EEPROM_INIT_CONTROL3_PORT_B
, 1, &eeprom_data
);
716 e1000_read_eeprom(&adapter
->hw
,
717 EEPROM_INIT_CONTROL3_PORT_A
, 1, &eeprom_data
);
720 if(eeprom_data
& eeprom_apme_mask
)
721 adapter
->wol
|= E1000_WUFC_MAG
;
723 /* reset the hardware with the new settings */
724 e1000_reset(adapter
);
726 /* Let firmware know the driver has taken over */
727 switch(adapter
->hw
.mac_type
) {
730 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
731 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
732 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
735 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
736 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
737 swsm
| E1000_SWSM_DRV_LOAD
);
743 strcpy(netdev
->name
, "eth%d");
744 if((err
= register_netdev(netdev
)))
747 DPRINTK(PROBE
, INFO
, "Intel(R) PRO/1000 Network Connection\n");
755 iounmap(adapter
->hw
.hw_addr
);
759 pci_release_regions(pdev
);
764 * e1000_remove - Device Removal Routine
765 * @pdev: PCI device information struct
767 * e1000_remove is called by the PCI subsystem to alert the driver
768 * that it should release a PCI device. The could be caused by a
769 * Hot-Plug event, or because the driver is going to be removed from
773 static void __devexit
774 e1000_remove(struct pci_dev
*pdev
)
776 struct net_device
*netdev
= pci_get_drvdata(pdev
);
777 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
781 flush_scheduled_work();
782 #ifdef CONFIG_E1000_NAPI
786 if(adapter
->hw
.mac_type
>= e1000_82540
&&
787 adapter
->hw
.media_type
== e1000_media_type_copper
) {
788 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
789 if(manc
& E1000_MANC_SMBUS_EN
) {
790 manc
|= E1000_MANC_ARP_EN
;
791 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
795 switch(adapter
->hw
.mac_type
) {
798 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
799 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
800 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
803 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
804 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
805 swsm
& ~E1000_SWSM_DRV_LOAD
);
812 unregister_netdev(netdev
);
813 #ifdef CONFIG_E1000_NAPI
814 for (i
= 0; i
< adapter
->num_queues
; i
++)
815 __dev_put(&adapter
->polling_netdev
[i
]);
818 if(!e1000_check_phy_reset_block(&adapter
->hw
))
819 e1000_phy_hw_reset(&adapter
->hw
);
821 kfree(adapter
->tx_ring
);
822 kfree(adapter
->rx_ring
);
823 #ifdef CONFIG_E1000_NAPI
824 kfree(adapter
->polling_netdev
);
827 iounmap(adapter
->hw
.hw_addr
);
828 pci_release_regions(pdev
);
830 #ifdef CONFIG_E1000_MQ
831 free_percpu(adapter
->cpu_netdev
);
832 free_percpu(adapter
->cpu_tx_ring
);
836 pci_disable_device(pdev
);
840 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
841 * @adapter: board private structure to initialize
843 * e1000_sw_init initializes the Adapter private data structure.
844 * Fields are initialized based on PCI device information and
845 * OS network device settings (MTU size).
849 e1000_sw_init(struct e1000_adapter
*adapter
)
851 struct e1000_hw
*hw
= &adapter
->hw
;
852 struct net_device
*netdev
= adapter
->netdev
;
853 struct pci_dev
*pdev
= adapter
->pdev
;
854 #ifdef CONFIG_E1000_NAPI
858 /* PCI config space info */
860 hw
->vendor_id
= pdev
->vendor
;
861 hw
->device_id
= pdev
->device
;
862 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
863 hw
->subsystem_id
= pdev
->subsystem_device
;
865 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &hw
->revision_id
);
867 pci_read_config_word(pdev
, PCI_COMMAND
, &hw
->pci_cmd_word
);
869 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
870 adapter
->rx_ps_bsize0
= E1000_RXBUFFER_256
;
871 hw
->max_frame_size
= netdev
->mtu
+
872 ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
873 hw
->min_frame_size
= MINIMUM_ETHERNET_FRAME_SIZE
;
875 /* identify the MAC */
877 if(e1000_set_mac_type(hw
)) {
878 DPRINTK(PROBE
, ERR
, "Unknown MAC Type\n");
882 /* initialize eeprom parameters */
884 if(e1000_init_eeprom_params(hw
)) {
885 E1000_ERR("EEPROM initialization failed\n");
889 switch(hw
->mac_type
) {
894 case e1000_82541_rev_2
:
895 case e1000_82547_rev_2
:
896 hw
->phy_init_script
= 1;
900 e1000_set_media_type(hw
);
902 hw
->wait_autoneg_complete
= FALSE
;
903 hw
->tbi_compatibility_en
= TRUE
;
904 hw
->adaptive_ifs
= TRUE
;
908 if(hw
->media_type
== e1000_media_type_copper
) {
909 hw
->mdix
= AUTO_ALL_MODES
;
910 hw
->disable_polarity_correction
= FALSE
;
911 hw
->master_slave
= E1000_MASTER_SLAVE
;
914 #ifdef CONFIG_E1000_MQ
915 /* Number of supported queues */
916 switch (hw
->mac_type
) {
919 adapter
->num_queues
= 2;
922 adapter
->num_queues
= 1;
925 adapter
->num_queues
= min(adapter
->num_queues
, num_online_cpus());
927 adapter
->num_queues
= 1;
930 if (e1000_alloc_queues(adapter
)) {
931 DPRINTK(PROBE
, ERR
, "Unable to allocate memory for queues\n");
935 #ifdef CONFIG_E1000_NAPI
936 for (i
= 0; i
< adapter
->num_queues
; i
++) {
937 adapter
->polling_netdev
[i
].priv
= adapter
;
938 adapter
->polling_netdev
[i
].poll
= &e1000_clean
;
939 adapter
->polling_netdev
[i
].weight
= 64;
940 dev_hold(&adapter
->polling_netdev
[i
]);
941 set_bit(__LINK_STATE_START
, &adapter
->polling_netdev
[i
].state
);
945 #ifdef CONFIG_E1000_MQ
946 e1000_setup_queue_mapping(adapter
);
949 atomic_set(&adapter
->irq_sem
, 1);
950 spin_lock_init(&adapter
->stats_lock
);
956 * e1000_alloc_queues - Allocate memory for all rings
957 * @adapter: board private structure to initialize
959 * We allocate one ring per queue at run-time since we don't know the
960 * number of queues at compile-time. The polling_netdev array is
961 * intended for Multiqueue, but should work fine with a single queue.
965 e1000_alloc_queues(struct e1000_adapter
*adapter
)
969 size
= sizeof(struct e1000_tx_ring
) * adapter
->num_queues
;
970 adapter
->tx_ring
= kmalloc(size
, GFP_KERNEL
);
971 if (!adapter
->tx_ring
)
973 memset(adapter
->tx_ring
, 0, size
);
975 size
= sizeof(struct e1000_rx_ring
) * adapter
->num_queues
;
976 adapter
->rx_ring
= kmalloc(size
, GFP_KERNEL
);
977 if (!adapter
->rx_ring
) {
978 kfree(adapter
->tx_ring
);
981 memset(adapter
->rx_ring
, 0, size
);
983 #ifdef CONFIG_E1000_NAPI
984 size
= sizeof(struct net_device
) * adapter
->num_queues
;
985 adapter
->polling_netdev
= kmalloc(size
, GFP_KERNEL
);
986 if (!adapter
->polling_netdev
) {
987 kfree(adapter
->tx_ring
);
988 kfree(adapter
->rx_ring
);
991 memset(adapter
->polling_netdev
, 0, size
);
994 return E1000_SUCCESS
;
997 #ifdef CONFIG_E1000_MQ
998 static void __devinit
999 e1000_setup_queue_mapping(struct e1000_adapter
*adapter
)
1003 adapter
->rx_sched_call_data
.func
= e1000_rx_schedule
;
1004 adapter
->rx_sched_call_data
.info
= adapter
->netdev
;
1005 cpus_clear(adapter
->rx_sched_call_data
.cpumask
);
1007 adapter
->cpu_netdev
= alloc_percpu(struct net_device
*);
1008 adapter
->cpu_tx_ring
= alloc_percpu(struct e1000_tx_ring
*);
1012 for_each_online_cpu(cpu
) {
1013 *per_cpu_ptr(adapter
->cpu_tx_ring
, cpu
) = &adapter
->tx_ring
[i
% adapter
->num_queues
];
1014 /* This is incomplete because we'd like to assign separate
1015 * physical cpus to these netdev polling structures and
1016 * avoid saturating a subset of cpus.
1018 if (i
< adapter
->num_queues
) {
1019 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = &adapter
->polling_netdev
[i
];
1020 adapter
->cpu_for_queue
[i
] = cpu
;
1022 *per_cpu_ptr(adapter
->cpu_netdev
, cpu
) = NULL
;
1026 unlock_cpu_hotplug();
1031 * e1000_open - Called when a network interface is made active
1032 * @netdev: network interface device structure
1034 * Returns 0 on success, negative value on failure
1036 * The open entry point is called when a network interface is made
1037 * active by the system (IFF_UP). At this point all resources needed
1038 * for transmit and receive operations are allocated, the interrupt
1039 * handler is registered with the OS, the watchdog timer is started,
1040 * and the stack is notified that the interface is ready.
1044 e1000_open(struct net_device
*netdev
)
1046 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1049 /* allocate transmit descriptors */
1051 if ((err
= e1000_setup_all_tx_resources(adapter
)))
1054 /* allocate receive descriptors */
1056 if ((err
= e1000_setup_all_rx_resources(adapter
)))
1059 if((err
= e1000_up(adapter
)))
1061 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
1062 if((adapter
->hw
.mng_cookie
.status
&
1063 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1064 e1000_update_mng_vlan(adapter
);
1067 return E1000_SUCCESS
;
1070 e1000_free_all_rx_resources(adapter
);
1072 e1000_free_all_tx_resources(adapter
);
1074 e1000_reset(adapter
);
1080 * e1000_close - Disables a network interface
1081 * @netdev: network interface device structure
1083 * Returns 0, this is not allowed to fail
1085 * The close entry point is called when an interface is de-activated
1086 * by the OS. The hardware is still under the drivers control, but
1087 * needs to be disabled. A global MAC reset is issued to stop the
1088 * hardware, and all transmit and receive resources are freed.
1092 e1000_close(struct net_device
*netdev
)
1094 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
1096 e1000_down(adapter
);
1098 e1000_free_all_tx_resources(adapter
);
1099 e1000_free_all_rx_resources(adapter
);
1101 if((adapter
->hw
.mng_cookie
.status
&
1102 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) {
1103 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
1109 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1110 * @adapter: address of board private structure
1111 * @start: address of beginning of memory
1112 * @len: length of memory
1114 static inline boolean_t
1115 e1000_check_64k_bound(struct e1000_adapter
*adapter
,
1116 void *start
, unsigned long len
)
1118 unsigned long begin
= (unsigned long) start
;
1119 unsigned long end
= begin
+ len
;
1121 /* First rev 82545 and 82546 need to not allow any memory
1122 * write location to cross 64k boundary due to errata 23 */
1123 if (adapter
->hw
.mac_type
== e1000_82545
||
1124 adapter
->hw
.mac_type
== e1000_82546
) {
1125 return ((begin
^ (end
- 1)) >> 16) != 0 ? FALSE
: TRUE
;
1132 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1133 * @adapter: board private structure
1134 * @txdr: tx descriptor ring (for a specific queue) to setup
1136 * Return 0 on success, negative on failure
1140 e1000_setup_tx_resources(struct e1000_adapter
*adapter
,
1141 struct e1000_tx_ring
*txdr
)
1143 struct pci_dev
*pdev
= adapter
->pdev
;
1146 size
= sizeof(struct e1000_buffer
) * txdr
->count
;
1147 txdr
->buffer_info
= vmalloc(size
);
1148 if(!txdr
->buffer_info
) {
1150 "Unable to allocate memory for the transmit descriptor ring\n");
1153 memset(txdr
->buffer_info
, 0, size
);
1154 memset(&txdr
->previous_buffer_info
, 0, sizeof(struct e1000_buffer
));
1156 /* round up to nearest 4K */
1158 txdr
->size
= txdr
->count
* sizeof(struct e1000_tx_desc
);
1159 E1000_ROUNDUP(txdr
->size
, 4096);
1161 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1164 vfree(txdr
->buffer_info
);
1166 "Unable to allocate memory for the transmit descriptor ring\n");
1170 /* Fix for errata 23, can't cross 64kB boundary */
1171 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1172 void *olddesc
= txdr
->desc
;
1173 dma_addr_t olddma
= txdr
->dma
;
1174 DPRINTK(TX_ERR
, ERR
, "txdr align check failed: %u bytes "
1175 "at %p\n", txdr
->size
, txdr
->desc
);
1176 /* Try again, without freeing the previous */
1177 txdr
->desc
= pci_alloc_consistent(pdev
, txdr
->size
, &txdr
->dma
);
1179 /* Failed allocation, critical failure */
1180 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1181 goto setup_tx_desc_die
;
1184 if (!e1000_check_64k_bound(adapter
, txdr
->desc
, txdr
->size
)) {
1186 pci_free_consistent(pdev
, txdr
->size
, txdr
->desc
,
1188 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1190 "Unable to allocate aligned memory "
1191 "for the transmit descriptor ring\n");
1192 vfree(txdr
->buffer_info
);
1195 /* Free old allocation, new allocation was successful */
1196 pci_free_consistent(pdev
, txdr
->size
, olddesc
, olddma
);
1199 memset(txdr
->desc
, 0, txdr
->size
);
1201 txdr
->next_to_use
= 0;
1202 txdr
->next_to_clean
= 0;
1203 spin_lock_init(&txdr
->tx_lock
);
1209 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1210 * (Descriptors) for all queues
1211 * @adapter: board private structure
1213 * If this function returns with an error, then it's possible one or
1214 * more of the rings is populated (while the rest are not). It is the
1215 * callers duty to clean those orphaned rings.
1217 * Return 0 on success, negative on failure
1221 e1000_setup_all_tx_resources(struct e1000_adapter
*adapter
)
1225 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1226 err
= e1000_setup_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1229 "Allocation for Tx Queue %u failed\n", i
);
1238 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1239 * @adapter: board private structure
1241 * Configure the Tx unit of the MAC after a reset.
1245 e1000_configure_tx(struct e1000_adapter
*adapter
)
1248 struct e1000_hw
*hw
= &adapter
->hw
;
1249 uint32_t tdlen
, tctl
, tipg
, tarc
;
1251 /* Setup the HW Tx Head and Tail descriptor pointers */
1253 switch (adapter
->num_queues
) {
1255 tdba
= adapter
->tx_ring
[1].dma
;
1256 tdlen
= adapter
->tx_ring
[1].count
*
1257 sizeof(struct e1000_tx_desc
);
1258 E1000_WRITE_REG(hw
, TDBAL1
, (tdba
& 0x00000000ffffffffULL
));
1259 E1000_WRITE_REG(hw
, TDBAH1
, (tdba
>> 32));
1260 E1000_WRITE_REG(hw
, TDLEN1
, tdlen
);
1261 E1000_WRITE_REG(hw
, TDH1
, 0);
1262 E1000_WRITE_REG(hw
, TDT1
, 0);
1263 adapter
->tx_ring
[1].tdh
= E1000_TDH1
;
1264 adapter
->tx_ring
[1].tdt
= E1000_TDT1
;
1268 tdba
= adapter
->tx_ring
[0].dma
;
1269 tdlen
= adapter
->tx_ring
[0].count
*
1270 sizeof(struct e1000_tx_desc
);
1271 E1000_WRITE_REG(hw
, TDBAL
, (tdba
& 0x00000000ffffffffULL
));
1272 E1000_WRITE_REG(hw
, TDBAH
, (tdba
>> 32));
1273 E1000_WRITE_REG(hw
, TDLEN
, tdlen
);
1274 E1000_WRITE_REG(hw
, TDH
, 0);
1275 E1000_WRITE_REG(hw
, TDT
, 0);
1276 adapter
->tx_ring
[0].tdh
= E1000_TDH
;
1277 adapter
->tx_ring
[0].tdt
= E1000_TDT
;
1281 /* Set the default values for the Tx Inter Packet Gap timer */
1283 switch (hw
->mac_type
) {
1284 case e1000_82542_rev2_0
:
1285 case e1000_82542_rev2_1
:
1286 tipg
= DEFAULT_82542_TIPG_IPGT
;
1287 tipg
|= DEFAULT_82542_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1288 tipg
|= DEFAULT_82542_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1291 if (hw
->media_type
== e1000_media_type_fiber
||
1292 hw
->media_type
== e1000_media_type_internal_serdes
)
1293 tipg
= DEFAULT_82543_TIPG_IPGT_FIBER
;
1295 tipg
= DEFAULT_82543_TIPG_IPGT_COPPER
;
1296 tipg
|= DEFAULT_82543_TIPG_IPGR1
<< E1000_TIPG_IPGR1_SHIFT
;
1297 tipg
|= DEFAULT_82543_TIPG_IPGR2
<< E1000_TIPG_IPGR2_SHIFT
;
1299 E1000_WRITE_REG(hw
, TIPG
, tipg
);
1301 /* Set the Tx Interrupt Delay register */
1303 E1000_WRITE_REG(hw
, TIDV
, adapter
->tx_int_delay
);
1304 if (hw
->mac_type
>= e1000_82540
)
1305 E1000_WRITE_REG(hw
, TADV
, adapter
->tx_abs_int_delay
);
1307 /* Program the Transmit Control Register */
1309 tctl
= E1000_READ_REG(hw
, TCTL
);
1311 tctl
&= ~E1000_TCTL_CT
;
1312 tctl
|= E1000_TCTL_EN
| E1000_TCTL_PSP
| E1000_TCTL_RTLC
|
1313 (E1000_COLLISION_THRESHOLD
<< E1000_CT_SHIFT
);
1315 E1000_WRITE_REG(hw
, TCTL
, tctl
);
1317 if (hw
->mac_type
== e1000_82571
|| hw
->mac_type
== e1000_82572
) {
1318 tarc
= E1000_READ_REG(hw
, TARC0
);
1319 tarc
|= ((1 << 25) | (1 << 21));
1320 E1000_WRITE_REG(hw
, TARC0
, tarc
);
1321 tarc
= E1000_READ_REG(hw
, TARC1
);
1323 if (tctl
& E1000_TCTL_MULR
)
1327 E1000_WRITE_REG(hw
, TARC1
, tarc
);
1330 e1000_config_collision_dist(hw
);
1332 /* Setup Transmit Descriptor Settings for eop descriptor */
1333 adapter
->txd_cmd
= E1000_TXD_CMD_IDE
| E1000_TXD_CMD_EOP
|
1336 if (hw
->mac_type
< e1000_82543
)
1337 adapter
->txd_cmd
|= E1000_TXD_CMD_RPS
;
1339 adapter
->txd_cmd
|= E1000_TXD_CMD_RS
;
1341 /* Cache if we're 82544 running in PCI-X because we'll
1342 * need this to apply a workaround later in the send path. */
1343 if (hw
->mac_type
== e1000_82544
&&
1344 hw
->bus_type
== e1000_bus_type_pcix
)
1345 adapter
->pcix_82544
= 1;
1349 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1350 * @adapter: board private structure
1351 * @rxdr: rx descriptor ring (for a specific queue) to setup
1353 * Returns 0 on success, negative on failure
1357 e1000_setup_rx_resources(struct e1000_adapter
*adapter
,
1358 struct e1000_rx_ring
*rxdr
)
1360 struct pci_dev
*pdev
= adapter
->pdev
;
1363 size
= sizeof(struct e1000_buffer
) * rxdr
->count
;
1364 rxdr
->buffer_info
= vmalloc(size
);
1365 if (!rxdr
->buffer_info
) {
1367 "Unable to allocate memory for the receive descriptor ring\n");
1370 memset(rxdr
->buffer_info
, 0, size
);
1372 size
= sizeof(struct e1000_ps_page
) * rxdr
->count
;
1373 rxdr
->ps_page
= kmalloc(size
, GFP_KERNEL
);
1374 if(!rxdr
->ps_page
) {
1375 vfree(rxdr
->buffer_info
);
1377 "Unable to allocate memory for the receive descriptor ring\n");
1380 memset(rxdr
->ps_page
, 0, size
);
1382 size
= sizeof(struct e1000_ps_page_dma
) * rxdr
->count
;
1383 rxdr
->ps_page_dma
= kmalloc(size
, GFP_KERNEL
);
1384 if(!rxdr
->ps_page_dma
) {
1385 vfree(rxdr
->buffer_info
);
1386 kfree(rxdr
->ps_page
);
1388 "Unable to allocate memory for the receive descriptor ring\n");
1391 memset(rxdr
->ps_page_dma
, 0, size
);
1393 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
)
1394 desc_len
= sizeof(struct e1000_rx_desc
);
1396 desc_len
= sizeof(union e1000_rx_desc_packet_split
);
1398 /* Round up to nearest 4K */
1400 rxdr
->size
= rxdr
->count
* desc_len
;
1401 E1000_ROUNDUP(rxdr
->size
, 4096);
1403 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1407 "Unable to allocate memory for the receive descriptor ring\n");
1409 vfree(rxdr
->buffer_info
);
1410 kfree(rxdr
->ps_page
);
1411 kfree(rxdr
->ps_page_dma
);
1415 /* Fix for errata 23, can't cross 64kB boundary */
1416 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1417 void *olddesc
= rxdr
->desc
;
1418 dma_addr_t olddma
= rxdr
->dma
;
1419 DPRINTK(RX_ERR
, ERR
, "rxdr align check failed: %u bytes "
1420 "at %p\n", rxdr
->size
, rxdr
->desc
);
1421 /* Try again, without freeing the previous */
1422 rxdr
->desc
= pci_alloc_consistent(pdev
, rxdr
->size
, &rxdr
->dma
);
1423 /* Failed allocation, critical failure */
1425 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1427 "Unable to allocate memory "
1428 "for the receive descriptor ring\n");
1429 goto setup_rx_desc_die
;
1432 if (!e1000_check_64k_bound(adapter
, rxdr
->desc
, rxdr
->size
)) {
1434 pci_free_consistent(pdev
, rxdr
->size
, rxdr
->desc
,
1436 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1438 "Unable to allocate aligned memory "
1439 "for the receive descriptor ring\n");
1440 goto setup_rx_desc_die
;
1442 /* Free old allocation, new allocation was successful */
1443 pci_free_consistent(pdev
, rxdr
->size
, olddesc
, olddma
);
1446 memset(rxdr
->desc
, 0, rxdr
->size
);
1448 rxdr
->next_to_clean
= 0;
1449 rxdr
->next_to_use
= 0;
1455 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1456 * (Descriptors) for all queues
1457 * @adapter: board private structure
1459 * If this function returns with an error, then it's possible one or
1460 * more of the rings is populated (while the rest are not). It is the
1461 * callers duty to clean those orphaned rings.
1463 * Return 0 on success, negative on failure
1467 e1000_setup_all_rx_resources(struct e1000_adapter
*adapter
)
1471 for (i
= 0; i
< adapter
->num_queues
; i
++) {
1472 err
= e1000_setup_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1475 "Allocation for Rx Queue %u failed\n", i
);
1484 * e1000_setup_rctl - configure the receive control registers
1485 * @adapter: Board private structure
1489 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1491 uint32_t rctl
, rfctl
;
1492 uint32_t psrctl
= 0;
1494 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1496 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1498 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1499 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1500 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1502 if(adapter
->hw
.tbi_compatibility_on
== 1)
1503 rctl
|= E1000_RCTL_SBP
;
1505 rctl
&= ~E1000_RCTL_SBP
;
1507 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1508 rctl
&= ~E1000_RCTL_LPE
;
1510 rctl
|= E1000_RCTL_LPE
;
1512 /* Setup buffer sizes */
1513 if(adapter
->hw
.mac_type
>= e1000_82571
) {
1514 /* We can now specify buffers in 1K increments.
1515 * BSIZE and BSEX are ignored in this case. */
1516 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1518 rctl
&= ~E1000_RCTL_SZ_4096
;
1519 rctl
|= E1000_RCTL_BSEX
;
1520 switch (adapter
->rx_buffer_len
) {
1521 case E1000_RXBUFFER_2048
:
1523 rctl
|= E1000_RCTL_SZ_2048
;
1524 rctl
&= ~E1000_RCTL_BSEX
;
1526 case E1000_RXBUFFER_4096
:
1527 rctl
|= E1000_RCTL_SZ_4096
;
1529 case E1000_RXBUFFER_8192
:
1530 rctl
|= E1000_RCTL_SZ_8192
;
1532 case E1000_RXBUFFER_16384
:
1533 rctl
|= E1000_RCTL_SZ_16384
;
1538 #ifdef CONFIG_E1000_PACKET_SPLIT
1539 /* 82571 and greater support packet-split where the protocol
1540 * header is placed in skb->data and the packet data is
1541 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1542 * In the case of a non-split, skb->data is linearly filled,
1543 * followed by the page buffers. Therefore, skb->data is
1544 * sized to hold the largest protocol header.
1546 adapter
->rx_ps
= (adapter
->hw
.mac_type
> e1000_82547_rev_2
)
1547 && (adapter
->netdev
->mtu
1548 < ((3 * PAGE_SIZE
) + adapter
->rx_ps_bsize0
));
1550 if(adapter
->rx_ps
) {
1551 /* Configure extra packet-split registers */
1552 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1553 rfctl
|= E1000_RFCTL_EXTEN
;
1554 /* disable IPv6 packet split support */
1555 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1556 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1558 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1560 psrctl
|= adapter
->rx_ps_bsize0
>>
1561 E1000_PSRCTL_BSIZE0_SHIFT
;
1562 psrctl
|= PAGE_SIZE
>>
1563 E1000_PSRCTL_BSIZE1_SHIFT
;
1564 psrctl
|= PAGE_SIZE
<<
1565 E1000_PSRCTL_BSIZE2_SHIFT
;
1566 psrctl
|= PAGE_SIZE
<<
1567 E1000_PSRCTL_BSIZE3_SHIFT
;
1569 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1572 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1576 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1577 * @adapter: board private structure
1579 * Configure the Rx unit of the MAC after a reset.
1583 e1000_configure_rx(struct e1000_adapter
*adapter
)
1586 struct e1000_hw
*hw
= &adapter
->hw
;
1587 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1588 #ifdef CONFIG_E1000_MQ
1589 uint32_t reta
, mrqc
;
1593 if(adapter
->rx_ps
) {
1594 rdlen
= adapter
->rx_ring
[0].count
*
1595 sizeof(union e1000_rx_desc_packet_split
);
1596 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1597 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1599 rdlen
= adapter
->rx_ring
[0].count
*
1600 sizeof(struct e1000_rx_desc
);
1601 adapter
->clean_rx
= e1000_clean_rx_irq
;
1602 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1605 /* disable receives while setting up the descriptors */
1606 rctl
= E1000_READ_REG(hw
, RCTL
);
1607 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1609 /* set the Receive Delay Timer Register */
1610 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1612 if (hw
->mac_type
>= e1000_82540
) {
1613 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1614 if(adapter
->itr
> 1)
1615 E1000_WRITE_REG(hw
, ITR
,
1616 1000000000 / (adapter
->itr
* 256));
1619 if (hw
->mac_type
>= e1000_82571
) {
1620 /* Reset delay timers after every interrupt */
1621 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1622 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1623 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1624 E1000_WRITE_FLUSH(hw
);
1627 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1628 * the Base and Length of the Rx Descriptor Ring */
1629 switch (adapter
->num_queues
) {
1630 #ifdef CONFIG_E1000_MQ
1632 rdba
= adapter
->rx_ring
[1].dma
;
1633 E1000_WRITE_REG(hw
, RDBAL1
, (rdba
& 0x00000000ffffffffULL
));
1634 E1000_WRITE_REG(hw
, RDBAH1
, (rdba
>> 32));
1635 E1000_WRITE_REG(hw
, RDLEN1
, rdlen
);
1636 E1000_WRITE_REG(hw
, RDH1
, 0);
1637 E1000_WRITE_REG(hw
, RDT1
, 0);
1638 adapter
->rx_ring
[1].rdh
= E1000_RDH1
;
1639 adapter
->rx_ring
[1].rdt
= E1000_RDT1
;
1644 rdba
= adapter
->rx_ring
[0].dma
;
1645 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1646 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1647 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1648 E1000_WRITE_REG(hw
, RDH
, 0);
1649 E1000_WRITE_REG(hw
, RDT
, 0);
1650 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1651 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1655 #ifdef CONFIG_E1000_MQ
1656 if (adapter
->num_queues
> 1) {
1657 uint32_t random
[10];
1659 get_random_bytes(&random
[0], 40);
1661 if (hw
->mac_type
<= e1000_82572
) {
1662 E1000_WRITE_REG(hw
, RSSIR
, 0);
1663 E1000_WRITE_REG(hw
, RSSIM
, 0);
1666 switch (adapter
->num_queues
) {
1670 mrqc
= E1000_MRQC_ENABLE_RSS_2Q
;
1674 /* Fill out redirection table */
1675 for (i
= 0; i
< 32; i
++)
1676 E1000_WRITE_REG_ARRAY(hw
, RETA
, i
, reta
);
1677 /* Fill out hash function seeds */
1678 for (i
= 0; i
< 10; i
++)
1679 E1000_WRITE_REG_ARRAY(hw
, RSSRK
, i
, random
[i
]);
1681 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1682 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1683 E1000_WRITE_REG(hw
, MRQC
, mrqc
);
1686 /* Multiqueue and packet checksumming are mutually exclusive. */
1687 if (hw
->mac_type
>= e1000_82571
) {
1688 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1689 rxcsum
|= E1000_RXCSUM_PCSD
;
1690 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1695 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1696 if (hw
->mac_type
>= e1000_82543
) {
1697 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1698 if(adapter
->rx_csum
== TRUE
) {
1699 rxcsum
|= E1000_RXCSUM_TUOFL
;
1701 /* Enable 82571 IPv4 payload checksum for UDP fragments
1702 * Must be used in conjunction with packet-split. */
1703 if((adapter
->hw
.mac_type
> e1000_82547_rev_2
) &&
1705 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1708 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1709 /* don't need to clear IPPCSE as it defaults to 0 */
1711 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1713 #endif /* CONFIG_E1000_MQ */
1715 if (hw
->mac_type
== e1000_82573
)
1716 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1718 /* Enable Receives */
1719 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1723 * e1000_free_tx_resources - Free Tx Resources per Queue
1724 * @adapter: board private structure
1725 * @tx_ring: Tx descriptor ring for a specific queue
1727 * Free all transmit software resources
1731 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1732 struct e1000_tx_ring
*tx_ring
)
1734 struct pci_dev
*pdev
= adapter
->pdev
;
1736 e1000_clean_tx_ring(adapter
, tx_ring
);
1738 vfree(tx_ring
->buffer_info
);
1739 tx_ring
->buffer_info
= NULL
;
1741 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1743 tx_ring
->desc
= NULL
;
1747 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1748 * @adapter: board private structure
1750 * Free all transmit software resources
1754 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1758 for (i
= 0; i
< adapter
->num_queues
; i
++)
1759 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1763 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1764 struct e1000_buffer
*buffer_info
)
1766 if(buffer_info
->dma
) {
1767 pci_unmap_page(adapter
->pdev
,
1769 buffer_info
->length
,
1771 buffer_info
->dma
= 0;
1773 if(buffer_info
->skb
) {
1774 dev_kfree_skb_any(buffer_info
->skb
);
1775 buffer_info
->skb
= NULL
;
1780 * e1000_clean_tx_ring - Free Tx Buffers
1781 * @adapter: board private structure
1782 * @tx_ring: ring to be cleaned
1786 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1787 struct e1000_tx_ring
*tx_ring
)
1789 struct e1000_buffer
*buffer_info
;
1793 /* Free all the Tx ring sk_buffs */
1795 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
1796 e1000_unmap_and_free_tx_resource(adapter
,
1797 &tx_ring
->previous_buffer_info
);
1800 for(i
= 0; i
< tx_ring
->count
; i
++) {
1801 buffer_info
= &tx_ring
->buffer_info
[i
];
1802 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1805 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1806 memset(tx_ring
->buffer_info
, 0, size
);
1808 /* Zero out the descriptor ring */
1810 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1812 tx_ring
->next_to_use
= 0;
1813 tx_ring
->next_to_clean
= 0;
1815 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1816 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1820 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1821 * @adapter: board private structure
1825 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1829 for (i
= 0; i
< adapter
->num_queues
; i
++)
1830 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1834 * e1000_free_rx_resources - Free Rx Resources
1835 * @adapter: board private structure
1836 * @rx_ring: ring to clean the resources from
1838 * Free all receive software resources
1842 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1843 struct e1000_rx_ring
*rx_ring
)
1845 struct pci_dev
*pdev
= adapter
->pdev
;
1847 e1000_clean_rx_ring(adapter
, rx_ring
);
1849 vfree(rx_ring
->buffer_info
);
1850 rx_ring
->buffer_info
= NULL
;
1851 kfree(rx_ring
->ps_page
);
1852 rx_ring
->ps_page
= NULL
;
1853 kfree(rx_ring
->ps_page_dma
);
1854 rx_ring
->ps_page_dma
= NULL
;
1856 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1858 rx_ring
->desc
= NULL
;
1862 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1863 * @adapter: board private structure
1865 * Free all receive software resources
1869 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1873 for (i
= 0; i
< adapter
->num_queues
; i
++)
1874 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1878 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1879 * @adapter: board private structure
1880 * @rx_ring: ring to free buffers from
1884 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1885 struct e1000_rx_ring
*rx_ring
)
1887 struct e1000_buffer
*buffer_info
;
1888 struct e1000_ps_page
*ps_page
;
1889 struct e1000_ps_page_dma
*ps_page_dma
;
1890 struct pci_dev
*pdev
= adapter
->pdev
;
1894 /* Free all the Rx ring sk_buffs */
1896 for(i
= 0; i
< rx_ring
->count
; i
++) {
1897 buffer_info
= &rx_ring
->buffer_info
[i
];
1898 if(buffer_info
->skb
) {
1899 ps_page
= &rx_ring
->ps_page
[i
];
1900 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1901 pci_unmap_single(pdev
,
1903 buffer_info
->length
,
1904 PCI_DMA_FROMDEVICE
);
1906 dev_kfree_skb(buffer_info
->skb
);
1907 buffer_info
->skb
= NULL
;
1909 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
1910 if(!ps_page
->ps_page
[j
]) break;
1911 pci_unmap_single(pdev
,
1912 ps_page_dma
->ps_page_dma
[j
],
1913 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1914 ps_page_dma
->ps_page_dma
[j
] = 0;
1915 put_page(ps_page
->ps_page
[j
]);
1916 ps_page
->ps_page
[j
] = NULL
;
1921 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1922 memset(rx_ring
->buffer_info
, 0, size
);
1923 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1924 memset(rx_ring
->ps_page
, 0, size
);
1925 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1926 memset(rx_ring
->ps_page_dma
, 0, size
);
1928 /* Zero out the descriptor ring */
1930 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1932 rx_ring
->next_to_clean
= 0;
1933 rx_ring
->next_to_use
= 0;
1935 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1936 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1940 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1941 * @adapter: board private structure
1945 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
1949 for (i
= 0; i
< adapter
->num_queues
; i
++)
1950 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1953 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1954 * and memory write and invalidate disabled for certain operations
1957 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
1959 struct net_device
*netdev
= adapter
->netdev
;
1962 e1000_pci_clear_mwi(&adapter
->hw
);
1964 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1965 rctl
|= E1000_RCTL_RST
;
1966 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1967 E1000_WRITE_FLUSH(&adapter
->hw
);
1970 if(netif_running(netdev
))
1971 e1000_clean_all_rx_rings(adapter
);
1975 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
1977 struct net_device
*netdev
= adapter
->netdev
;
1980 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1981 rctl
&= ~E1000_RCTL_RST
;
1982 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1983 E1000_WRITE_FLUSH(&adapter
->hw
);
1986 if(adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
1987 e1000_pci_set_mwi(&adapter
->hw
);
1989 if(netif_running(netdev
)) {
1990 e1000_configure_rx(adapter
);
1991 e1000_alloc_rx_buffers(adapter
, &adapter
->rx_ring
[0]);
1996 * e1000_set_mac - Change the Ethernet Address of the NIC
1997 * @netdev: network interface device structure
1998 * @p: pointer to an address structure
2000 * Returns 0 on success, negative on failure
2004 e1000_set_mac(struct net_device
*netdev
, void *p
)
2006 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2007 struct sockaddr
*addr
= p
;
2009 if(!is_valid_ether_addr(addr
->sa_data
))
2010 return -EADDRNOTAVAIL
;
2012 /* 82542 2.0 needs to be in reset to write receive address registers */
2014 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2015 e1000_enter_82542_rst(adapter
);
2017 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2018 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2020 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2022 /* With 82571 controllers, LAA may be overwritten (with the default)
2023 * due to controller reset from the other port. */
2024 if (adapter
->hw
.mac_type
== e1000_82571
) {
2025 /* activate the work around */
2026 adapter
->hw
.laa_is_present
= 1;
2028 /* Hold a copy of the LAA in RAR[14] This is done so that
2029 * between the time RAR[0] gets clobbered and the time it
2030 * gets fixed (in e1000_watchdog), the actual LAA is in one
2031 * of the RARs and no incoming packets directed to this port
2032 * are dropped. Eventaully the LAA will be in RAR[0] and
2034 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2035 E1000_RAR_ENTRIES
- 1);
2038 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2039 e1000_leave_82542_rst(adapter
);
2045 * e1000_set_multi - Multicast and Promiscuous mode set
2046 * @netdev: network interface device structure
2048 * The set_multi entry point is called whenever the multicast address
2049 * list or the network interface flags are updated. This routine is
2050 * responsible for configuring the hardware for proper multicast,
2051 * promiscuous mode, and all-multi behavior.
2055 e1000_set_multi(struct net_device
*netdev
)
2057 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2058 struct e1000_hw
*hw
= &adapter
->hw
;
2059 struct dev_mc_list
*mc_ptr
;
2061 uint32_t hash_value
;
2062 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2064 /* reserve RAR[14] for LAA over-write work-around */
2065 if (adapter
->hw
.mac_type
== e1000_82571
)
2068 /* Check for Promiscuous and All Multicast modes */
2070 rctl
= E1000_READ_REG(hw
, RCTL
);
2072 if(netdev
->flags
& IFF_PROMISC
) {
2073 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2074 } else if(netdev
->flags
& IFF_ALLMULTI
) {
2075 rctl
|= E1000_RCTL_MPE
;
2076 rctl
&= ~E1000_RCTL_UPE
;
2078 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2081 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2083 /* 82542 2.0 needs to be in reset to write receive address registers */
2085 if(hw
->mac_type
== e1000_82542_rev2_0
)
2086 e1000_enter_82542_rst(adapter
);
2088 /* load the first 14 multicast address into the exact filters 1-14
2089 * RAR 0 is used for the station MAC adddress
2090 * if there are not 14 addresses, go ahead and clear the filters
2091 * -- with 82571 controllers only 0-13 entries are filled here
2093 mc_ptr
= netdev
->mc_list
;
2095 for(i
= 1; i
< rar_entries
; i
++) {
2097 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2098 mc_ptr
= mc_ptr
->next
;
2100 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2101 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2105 /* clear the old settings from the multicast hash table */
2107 for(i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2108 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2110 /* load any remaining addresses into the hash table */
2112 for(; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2113 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2114 e1000_mta_set(hw
, hash_value
);
2117 if(hw
->mac_type
== e1000_82542_rev2_0
)
2118 e1000_leave_82542_rst(adapter
);
2121 /* Need to wait a few seconds after link up to get diagnostic information from
2125 e1000_update_phy_info(unsigned long data
)
2127 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2128 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2132 * e1000_82547_tx_fifo_stall - Timer Call-back
2133 * @data: pointer to adapter cast into an unsigned long
2137 e1000_82547_tx_fifo_stall(unsigned long data
)
2139 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2140 struct net_device
*netdev
= adapter
->netdev
;
2143 if(atomic_read(&adapter
->tx_fifo_stall
)) {
2144 if((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2145 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2146 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2147 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2148 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2149 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2150 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2151 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2152 tctl
& ~E1000_TCTL_EN
);
2153 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2154 adapter
->tx_head_addr
);
2155 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2156 adapter
->tx_head_addr
);
2157 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2158 adapter
->tx_head_addr
);
2159 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2160 adapter
->tx_head_addr
);
2161 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2162 E1000_WRITE_FLUSH(&adapter
->hw
);
2164 adapter
->tx_fifo_head
= 0;
2165 atomic_set(&adapter
->tx_fifo_stall
, 0);
2166 netif_wake_queue(netdev
);
2168 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2174 * e1000_watchdog - Timer Call-back
2175 * @data: pointer to adapter cast into an unsigned long
2178 e1000_watchdog(unsigned long data
)
2180 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2182 /* Do the rest outside of interrupt context */
2183 schedule_work(&adapter
->watchdog_task
);
2187 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2189 struct net_device
*netdev
= adapter
->netdev
;
2190 struct e1000_tx_ring
*txdr
= &adapter
->tx_ring
[0];
2193 e1000_check_for_link(&adapter
->hw
);
2194 if (adapter
->hw
.mac_type
== e1000_82573
) {
2195 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2196 if(adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2197 e1000_update_mng_vlan(adapter
);
2200 if((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2201 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2202 link
= !adapter
->hw
.serdes_link_down
;
2204 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2207 if(!netif_carrier_ok(netdev
)) {
2208 e1000_get_speed_and_duplex(&adapter
->hw
,
2209 &adapter
->link_speed
,
2210 &adapter
->link_duplex
);
2212 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2213 adapter
->link_speed
,
2214 adapter
->link_duplex
== FULL_DUPLEX
?
2215 "Full Duplex" : "Half Duplex");
2217 netif_carrier_on(netdev
);
2218 netif_wake_queue(netdev
);
2219 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2220 adapter
->smartspeed
= 0;
2223 if(netif_carrier_ok(netdev
)) {
2224 adapter
->link_speed
= 0;
2225 adapter
->link_duplex
= 0;
2226 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2227 netif_carrier_off(netdev
);
2228 netif_stop_queue(netdev
);
2229 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2232 e1000_smartspeed(adapter
);
2235 e1000_update_stats(adapter
);
2237 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2238 adapter
->tpt_old
= adapter
->stats
.tpt
;
2239 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2240 adapter
->colc_old
= adapter
->stats
.colc
;
2242 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2243 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2244 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2245 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2247 e1000_update_adaptive(&adapter
->hw
);
2249 if (adapter
->num_queues
== 1 && !netif_carrier_ok(netdev
)) {
2250 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2251 /* We've lost link, so the controller stops DMA,
2252 * but we've got queued Tx work that's never going
2253 * to get done, so reset controller to flush Tx.
2254 * (Do the reset outside of interrupt context). */
2255 schedule_work(&adapter
->tx_timeout_task
);
2259 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2260 if(adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2261 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2262 * asymmetrical Tx or Rx gets ITR=8000; everyone
2263 * else is between 2000-8000. */
2264 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2265 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2266 adapter
->gotcl
- adapter
->gorcl
:
2267 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2268 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2269 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2272 /* Cause software interrupt to ensure rx ring is cleaned */
2273 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2275 /* Force detection of hung controller every watchdog period */
2276 adapter
->detect_tx_hung
= TRUE
;
2278 /* With 82571 controllers, LAA may be overwritten due to controller
2279 * reset from the other port. Set the appropriate LAA in RAR[0] */
2280 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2281 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2283 /* Reset the timer */
2284 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2287 #define E1000_TX_FLAGS_CSUM 0x00000001
2288 #define E1000_TX_FLAGS_VLAN 0x00000002
2289 #define E1000_TX_FLAGS_TSO 0x00000004
2290 #define E1000_TX_FLAGS_IPV4 0x00000008
2291 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2292 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2295 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2296 struct sk_buff
*skb
)
2299 struct e1000_context_desc
*context_desc
;
2301 uint32_t cmd_length
= 0;
2302 uint16_t ipcse
= 0, tucse
, mss
;
2303 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2306 if(skb_shinfo(skb
)->tso_size
) {
2307 if (skb_header_cloned(skb
)) {
2308 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2313 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2314 mss
= skb_shinfo(skb
)->tso_size
;
2315 if(skb
->protocol
== ntohs(ETH_P_IP
)) {
2316 skb
->nh
.iph
->tot_len
= 0;
2317 skb
->nh
.iph
->check
= 0;
2319 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2324 cmd_length
= E1000_TXD_CMD_IP
;
2325 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2326 #ifdef NETIF_F_TSO_IPV6
2327 } else if(skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2328 skb
->nh
.ipv6h
->payload_len
= 0;
2330 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2331 &skb
->nh
.ipv6h
->daddr
,
2338 ipcss
= skb
->nh
.raw
- skb
->data
;
2339 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2340 tucss
= skb
->h
.raw
- skb
->data
;
2341 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2344 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2345 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2347 i
= tx_ring
->next_to_use
;
2348 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2350 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2351 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2352 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2353 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2354 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2355 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2356 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2357 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2358 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2360 if (++i
== tx_ring
->count
) i
= 0;
2361 tx_ring
->next_to_use
= i
;
2370 static inline boolean_t
2371 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2372 struct sk_buff
*skb
)
2374 struct e1000_context_desc
*context_desc
;
2378 if(likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2379 css
= skb
->h
.raw
- skb
->data
;
2381 i
= tx_ring
->next_to_use
;
2382 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2384 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2385 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2386 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2387 context_desc
->tcp_seg_setup
.data
= 0;
2388 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2390 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2391 tx_ring
->next_to_use
= i
;
2399 #define E1000_MAX_TXD_PWR 12
2400 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2403 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2404 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2405 unsigned int nr_frags
, unsigned int mss
)
2407 struct e1000_buffer
*buffer_info
;
2408 unsigned int len
= skb
->len
;
2409 unsigned int offset
= 0, size
, count
= 0, i
;
2411 len
-= skb
->data_len
;
2413 i
= tx_ring
->next_to_use
;
2416 buffer_info
= &tx_ring
->buffer_info
[i
];
2417 size
= min(len
, max_per_txd
);
2419 /* Workaround for premature desc write-backs
2420 * in TSO mode. Append 4-byte sentinel desc */
2421 if(unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2424 /* work-around for errata 10 and it applies
2425 * to all controllers in PCI-X mode
2426 * The fix is to make sure that the first descriptor of a
2427 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2429 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2430 (size
> 2015) && count
== 0))
2433 /* Workaround for potential 82544 hang in PCI-X. Avoid
2434 * terminating buffers within evenly-aligned dwords. */
2435 if(unlikely(adapter
->pcix_82544
&&
2436 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2440 buffer_info
->length
= size
;
2442 pci_map_single(adapter
->pdev
,
2446 buffer_info
->time_stamp
= jiffies
;
2451 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2454 for(f
= 0; f
< nr_frags
; f
++) {
2455 struct skb_frag_struct
*frag
;
2457 frag
= &skb_shinfo(skb
)->frags
[f
];
2459 offset
= frag
->page_offset
;
2462 buffer_info
= &tx_ring
->buffer_info
[i
];
2463 size
= min(len
, max_per_txd
);
2465 /* Workaround for premature desc write-backs
2466 * in TSO mode. Append 4-byte sentinel desc */
2467 if(unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2470 /* Workaround for potential 82544 hang in PCI-X.
2471 * Avoid terminating buffers within evenly-aligned
2473 if(unlikely(adapter
->pcix_82544
&&
2474 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2478 buffer_info
->length
= size
;
2480 pci_map_page(adapter
->pdev
,
2485 buffer_info
->time_stamp
= jiffies
;
2490 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2494 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2495 tx_ring
->buffer_info
[i
].skb
= skb
;
2496 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2502 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2503 int tx_flags
, int count
)
2505 struct e1000_tx_desc
*tx_desc
= NULL
;
2506 struct e1000_buffer
*buffer_info
;
2507 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2510 if(likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2511 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2513 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2515 if(likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2516 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2519 if(likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2520 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2521 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2524 if(unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2525 txd_lower
|= E1000_TXD_CMD_VLE
;
2526 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2529 i
= tx_ring
->next_to_use
;
2532 buffer_info
= &tx_ring
->buffer_info
[i
];
2533 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2534 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2535 tx_desc
->lower
.data
=
2536 cpu_to_le32(txd_lower
| buffer_info
->length
);
2537 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2538 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2541 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2543 /* Force memory writes to complete before letting h/w
2544 * know there are new descriptors to fetch. (Only
2545 * applicable for weak-ordered memory model archs,
2546 * such as IA-64). */
2549 tx_ring
->next_to_use
= i
;
2550 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2554 * 82547 workaround to avoid controller hang in half-duplex environment.
2555 * The workaround is to avoid queuing a large packet that would span
2556 * the internal Tx FIFO ring boundary by notifying the stack to resend
2557 * the packet at a later time. This gives the Tx FIFO an opportunity to
2558 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2559 * to the beginning of the Tx FIFO.
2562 #define E1000_FIFO_HDR 0x10
2563 #define E1000_82547_PAD_LEN 0x3E0
2566 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2568 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2569 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2571 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2573 if(adapter
->link_duplex
!= HALF_DUPLEX
)
2574 goto no_fifo_stall_required
;
2576 if(atomic_read(&adapter
->tx_fifo_stall
))
2579 if(skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2580 atomic_set(&adapter
->tx_fifo_stall
, 1);
2584 no_fifo_stall_required
:
2585 adapter
->tx_fifo_head
+= skb_fifo_len
;
2586 if(adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2587 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2591 #define MINIMUM_DHCP_PACKET_SIZE 282
2593 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2595 struct e1000_hw
*hw
= &adapter
->hw
;
2596 uint16_t length
, offset
;
2597 if(vlan_tx_tag_present(skb
)) {
2598 if(!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2599 ( adapter
->hw
.mng_cookie
.status
&
2600 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2603 if(htons(ETH_P_IP
) == skb
->protocol
) {
2604 const struct iphdr
*ip
= skb
->nh
.iph
;
2605 if(IPPROTO_UDP
== ip
->protocol
) {
2606 struct udphdr
*udp
= (struct udphdr
*)(skb
->h
.uh
);
2607 if(ntohs(udp
->dest
) == 67) {
2608 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2609 length
= skb
->len
- offset
;
2611 return e1000_mng_write_dhcp_info(hw
,
2612 (uint8_t *)udp
+ 8, length
);
2615 } else if((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2616 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2617 if((htons(ETH_P_IP
) == eth
->h_proto
)) {
2618 const struct iphdr
*ip
=
2619 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2620 if(IPPROTO_UDP
== ip
->protocol
) {
2621 struct udphdr
*udp
=
2622 (struct udphdr
*)((uint8_t *)ip
+
2624 if(ntohs(udp
->dest
) == 67) {
2625 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2626 length
= skb
->len
- offset
;
2628 return e1000_mng_write_dhcp_info(hw
,
2638 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2640 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2642 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2643 struct e1000_tx_ring
*tx_ring
;
2644 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2645 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2646 unsigned int tx_flags
= 0;
2647 unsigned int len
= skb
->len
;
2648 unsigned long flags
;
2649 unsigned int nr_frags
= 0;
2650 unsigned int mss
= 0;
2654 len
-= skb
->data_len
;
2656 #ifdef CONFIG_E1000_MQ
2657 tx_ring
= *per_cpu_ptr(adapter
->cpu_tx_ring
, smp_processor_id());
2659 tx_ring
= adapter
->tx_ring
;
2662 if (unlikely(skb
->len
<= 0)) {
2663 dev_kfree_skb_any(skb
);
2664 return NETDEV_TX_OK
;
2668 mss
= skb_shinfo(skb
)->tso_size
;
2669 /* The controller does a simple calculation to
2670 * make sure there is enough room in the FIFO before
2671 * initiating the DMA for each buffer. The calc is:
2672 * 4 = ceil(buffer len/mss). To make sure we don't
2673 * overrun the FIFO, adjust the max buffer len if mss
2676 max_per_txd
= min(mss
<< 2, max_per_txd
);
2677 max_txd_pwr
= fls(max_per_txd
) - 1;
2680 if((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2684 if(skb
->ip_summed
== CHECKSUM_HW
)
2687 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2689 if(adapter
->pcix_82544
)
2692 /* work-around for errata 10 and it applies to all controllers
2693 * in PCI-X mode, so add one more descriptor to the count
2695 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2699 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2700 for(f
= 0; f
< nr_frags
; f
++)
2701 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2703 if(adapter
->pcix_82544
)
2707 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2708 * points to just header, pull a few bytes of payload from
2709 * frags into skb->data */
2710 if (skb_shinfo(skb
)->tso_size
) {
2712 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2713 if (skb
->data_len
&& (hdr_len
< (skb
->len
- skb
->data_len
)) &&
2714 (adapter
->hw
.mac_type
== e1000_82571
||
2715 adapter
->hw
.mac_type
== e1000_82572
)) {
2716 unsigned int pull_size
;
2717 pull_size
= min((unsigned int)4, skb
->data_len
);
2718 if (!__pskb_pull_tail(skb
, pull_size
)) {
2719 printk(KERN_ERR
"__pskb_pull_tail failed.\n");
2720 dev_kfree_skb_any(skb
);
2727 if(adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2728 e1000_transfer_dhcp_info(adapter
, skb
);
2730 local_irq_save(flags
);
2731 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2732 /* Collision - tell upper layer to requeue */
2733 local_irq_restore(flags
);
2734 return NETDEV_TX_LOCKED
;
2737 /* need: count + 2 desc gap to keep tail from touching
2738 * head, otherwise try next time */
2739 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2740 netif_stop_queue(netdev
);
2741 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2742 return NETDEV_TX_BUSY
;
2745 if(unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2746 if(unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2747 netif_stop_queue(netdev
);
2748 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2749 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2750 return NETDEV_TX_BUSY
;
2754 if(unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2755 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2756 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2759 first
= tx_ring
->next_to_use
;
2761 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2763 dev_kfree_skb_any(skb
);
2764 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2765 return NETDEV_TX_OK
;
2769 tx_flags
|= E1000_TX_FLAGS_TSO
;
2770 else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2771 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2773 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2774 * 82571 hardware supports TSO capabilities for IPv6 as well...
2775 * no longer assume, we must. */
2776 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2777 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2779 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2780 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2781 max_per_txd
, nr_frags
, mss
));
2783 netdev
->trans_start
= jiffies
;
2785 /* Make sure there is space in the ring for the next send. */
2786 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2787 netif_stop_queue(netdev
);
2789 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2790 return NETDEV_TX_OK
;
2794 * e1000_tx_timeout - Respond to a Tx Hang
2795 * @netdev: network interface device structure
2799 e1000_tx_timeout(struct net_device
*netdev
)
2801 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2803 /* Do the reset outside of interrupt context */
2804 schedule_work(&adapter
->tx_timeout_task
);
2808 e1000_tx_timeout_task(struct net_device
*netdev
)
2810 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2812 e1000_down(adapter
);
2817 * e1000_get_stats - Get System Network Statistics
2818 * @netdev: network interface device structure
2820 * Returns the address of the device statistics structure.
2821 * The statistics are actually updated from the timer callback.
2824 static struct net_device_stats
*
2825 e1000_get_stats(struct net_device
*netdev
)
2827 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2829 e1000_update_stats(adapter
);
2830 return &adapter
->net_stats
;
2834 * e1000_change_mtu - Change the Maximum Transfer Unit
2835 * @netdev: network interface device structure
2836 * @new_mtu: new value for maximum frame size
2838 * Returns 0 on success, negative on failure
2842 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2844 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2845 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2847 if((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2848 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2849 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2853 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2854 /* might want this to be bigger enum check... */
2855 /* 82571 controllers limit jumbo frame size to 10500 bytes */
2856 if ((adapter
->hw
.mac_type
== e1000_82571
||
2857 adapter
->hw
.mac_type
== e1000_82572
) &&
2858 max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2859 DPRINTK(PROBE
, ERR
, "MTU > 9216 bytes not supported "
2860 "on 82571 and 82572 controllers.\n");
2864 if(adapter
->hw
.mac_type
== e1000_82573
&&
2865 max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2866 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2871 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2872 adapter
->rx_buffer_len
= max_frame
;
2873 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
2875 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
2876 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
2877 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2882 if(max_frame
<= E1000_RXBUFFER_2048
) {
2883 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
2884 } else if(max_frame
<= E1000_RXBUFFER_4096
) {
2885 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
2886 } else if(max_frame
<= E1000_RXBUFFER_8192
) {
2887 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
2888 } else if(max_frame
<= E1000_RXBUFFER_16384
) {
2889 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
2894 netdev
->mtu
= new_mtu
;
2896 if(netif_running(netdev
)) {
2897 e1000_down(adapter
);
2901 adapter
->hw
.max_frame_size
= max_frame
;
2907 * e1000_update_stats - Update the board statistics counters
2908 * @adapter: board private structure
2912 e1000_update_stats(struct e1000_adapter
*adapter
)
2914 struct e1000_hw
*hw
= &adapter
->hw
;
2915 unsigned long flags
;
2918 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2920 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2922 /* these counters are modified from e1000_adjust_tbi_stats,
2923 * called from the interrupt context, so they must only
2924 * be written while holding adapter->stats_lock
2927 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
2928 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
2929 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
2930 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
2931 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
2932 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
2933 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
2934 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
2935 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
2936 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
2937 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
2938 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
2939 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
2941 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
2942 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
2943 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
2944 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
2945 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
2946 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
2947 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
2948 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
2949 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
2950 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
2951 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
2952 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
2953 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
2954 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
2955 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
2956 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
2957 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
2958 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
2959 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
2960 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
2961 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
2962 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
2963 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
2964 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
2965 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
2966 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
2967 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
2968 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
2969 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
2970 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
2971 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
2972 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
2973 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
2974 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
2976 /* used for adaptive IFS */
2978 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
2979 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
2980 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
2981 adapter
->stats
.colc
+= hw
->collision_delta
;
2983 if(hw
->mac_type
>= e1000_82543
) {
2984 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
2985 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
2986 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
2987 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
2988 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
2989 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
2991 if(hw
->mac_type
> e1000_82547_rev_2
) {
2992 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
2993 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
2994 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
2995 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
2996 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
2997 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
2998 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
2999 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3000 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3003 /* Fill out the OS statistics structure */
3005 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3006 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3007 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3008 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3009 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3010 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3014 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3015 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3016 adapter
->stats
.rlec
+ adapter
->stats
.mpc
+
3017 adapter
->stats
.cexterr
;
3018 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
3019 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3020 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3021 adapter
->net_stats
.rx_fifo_errors
= adapter
->stats
.mpc
;
3022 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3026 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3027 adapter
->stats
.latecol
;
3028 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3029 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3030 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3032 /* Tx Dropped needs to be maintained elsewhere */
3036 if(hw
->media_type
== e1000_media_type_copper
) {
3037 if((adapter
->link_speed
== SPEED_1000
) &&
3038 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3039 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3040 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3043 if((hw
->mac_type
<= e1000_82546
) &&
3044 (hw
->phy_type
== e1000_phy_m88
) &&
3045 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3046 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3049 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3052 #ifdef CONFIG_E1000_MQ
3054 e1000_rx_schedule(void *data
)
3056 struct net_device
*poll_dev
, *netdev
= data
;
3057 struct e1000_adapter
*adapter
= netdev
->priv
;
3058 int this_cpu
= get_cpu();
3060 poll_dev
= *per_cpu_ptr(adapter
->cpu_netdev
, this_cpu
);
3061 if (poll_dev
== NULL
) {
3066 if (likely(netif_rx_schedule_prep(poll_dev
)))
3067 __netif_rx_schedule(poll_dev
);
3069 e1000_irq_enable(adapter
);
3076 * e1000_intr - Interrupt Handler
3077 * @irq: interrupt number
3078 * @data: pointer to a network interface device structure
3079 * @pt_regs: CPU registers structure
3083 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3085 struct net_device
*netdev
= data
;
3086 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3087 struct e1000_hw
*hw
= &adapter
->hw
;
3088 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3092 return IRQ_NONE
; /* Not our interrupt */
3094 if(unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3095 hw
->get_link_status
= 1;
3096 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3099 #ifdef CONFIG_E1000_NAPI
3100 atomic_inc(&adapter
->irq_sem
);
3101 E1000_WRITE_REG(hw
, IMC
, ~0);
3102 E1000_WRITE_FLUSH(hw
);
3103 #ifdef CONFIG_E1000_MQ
3104 if (atomic_read(&adapter
->rx_sched_call_data
.count
) == 0) {
3105 cpu_set(adapter
->cpu_for_queue
[0],
3106 adapter
->rx_sched_call_data
.cpumask
);
3107 for (i
= 1; i
< adapter
->num_queues
; i
++) {
3108 cpu_set(adapter
->cpu_for_queue
[i
],
3109 adapter
->rx_sched_call_data
.cpumask
);
3110 atomic_inc(&adapter
->irq_sem
);
3112 atomic_set(&adapter
->rx_sched_call_data
.count
, i
);
3113 smp_call_async_mask(&adapter
->rx_sched_call_data
);
3115 printk("call_data.count == %u\n", atomic_read(&adapter
->rx_sched_call_data
.count
));
3118 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3119 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3121 e1000_irq_enable(adapter
);
3124 /* Writing IMC and IMS is needed for 82547.
3125 Due to Hub Link bus being occupied, an interrupt
3126 de-assertion message is not able to be sent.
3127 When an interrupt assertion message is generated later,
3128 two messages are re-ordered and sent out.
3129 That causes APIC to think 82547 is in de-assertion
3130 state, while 82547 is in assertion state, resulting
3131 in dead lock. Writing IMC forces 82547 into
3134 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
){
3135 atomic_inc(&adapter
->irq_sem
);
3136 E1000_WRITE_REG(hw
, IMC
, ~0);
3139 for(i
= 0; i
< E1000_MAX_INTR
; i
++)
3140 if(unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3141 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3144 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3145 e1000_irq_enable(adapter
);
3152 #ifdef CONFIG_E1000_NAPI
3154 * e1000_clean - NAPI Rx polling callback
3155 * @adapter: board private structure
3159 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3161 struct e1000_adapter
*adapter
;
3162 int work_to_do
= min(*budget
, poll_dev
->quota
);
3163 int tx_cleaned
, i
= 0, work_done
= 0;
3165 /* Must NOT use netdev_priv macro here. */
3166 adapter
= poll_dev
->priv
;
3168 /* Keep link state information with original netdev */
3169 if (!netif_carrier_ok(adapter
->netdev
))
3172 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3174 if (unlikely(i
== adapter
->num_queues
))
3178 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3179 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3180 &work_done
, work_to_do
);
3182 *budget
-= work_done
;
3183 poll_dev
->quota
-= work_done
;
3185 /* If no Tx and not enough Rx work done, exit the polling mode */
3186 if((!tx_cleaned
&& (work_done
== 0)) ||
3187 !netif_running(adapter
->netdev
)) {
3189 netif_rx_complete(poll_dev
);
3190 e1000_irq_enable(adapter
);
3199 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3200 * @adapter: board private structure
3204 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3205 struct e1000_tx_ring
*tx_ring
)
3207 struct net_device
*netdev
= adapter
->netdev
;
3208 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3209 struct e1000_buffer
*buffer_info
;
3210 unsigned int i
, eop
;
3211 boolean_t cleaned
= FALSE
;
3213 i
= tx_ring
->next_to_clean
;
3214 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3215 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3217 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3218 /* Premature writeback of Tx descriptors clear (free buffers
3219 * and unmap pci_mapping) previous_buffer_info */
3220 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
3221 e1000_unmap_and_free_tx_resource(adapter
,
3222 &tx_ring
->previous_buffer_info
);
3225 for(cleaned
= FALSE
; !cleaned
; ) {
3226 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3227 buffer_info
= &tx_ring
->buffer_info
[i
];
3228 cleaned
= (i
== eop
);
3231 if (!(netdev
->features
& NETIF_F_TSO
)) {
3233 e1000_unmap_and_free_tx_resource(adapter
,
3238 memcpy(&tx_ring
->previous_buffer_info
,
3240 sizeof(struct e1000_buffer
));
3241 memset(buffer_info
, 0,
3242 sizeof(struct e1000_buffer
));
3244 e1000_unmap_and_free_tx_resource(
3245 adapter
, buffer_info
);
3250 tx_desc
->buffer_addr
= 0;
3251 tx_desc
->lower
.data
= 0;
3252 tx_desc
->upper
.data
= 0;
3254 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
3259 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3260 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3263 tx_ring
->next_to_clean
= i
;
3265 spin_lock(&tx_ring
->tx_lock
);
3267 if(unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3268 netif_carrier_ok(netdev
)))
3269 netif_wake_queue(netdev
);
3271 spin_unlock(&tx_ring
->tx_lock
);
3273 if (adapter
->detect_tx_hung
) {
3274 /* Detect a transmit hang in hardware, this serializes the
3275 * check with the clearing of time_stamp and movement of i */
3276 adapter
->detect_tx_hung
= FALSE
;
3277 if (tx_ring
->buffer_info
[i
].dma
&&
3278 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+ HZ
)
3279 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3280 E1000_STATUS_TXOFF
)) {
3282 /* detected Tx unit hang */
3283 i
= tx_ring
->next_to_clean
;
3284 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3285 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3286 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3289 " next_to_use <%x>\n"
3290 " next_to_clean <%x>\n"
3291 "buffer_info[next_to_clean]\n"
3293 " time_stamp <%lx>\n"
3294 " next_to_watch <%x>\n"
3296 " next_to_watch.status <%x>\n",
3297 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3298 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3299 tx_ring
->next_to_use
,
3301 (unsigned long long)tx_ring
->buffer_info
[i
].dma
,
3302 tx_ring
->buffer_info
[i
].time_stamp
,
3305 eop_desc
->upper
.fields
.status
);
3306 netif_stop_queue(netdev
);
3310 if (unlikely(!(eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
3311 time_after(jiffies
, tx_ring
->previous_buffer_info
.time_stamp
+ HZ
)))
3312 e1000_unmap_and_free_tx_resource(
3313 adapter
, &tx_ring
->previous_buffer_info
);
3319 * e1000_rx_checksum - Receive Checksum Offload for 82543
3320 * @adapter: board private structure
3321 * @status_err: receive descriptor status and error fields
3322 * @csum: receive descriptor csum field
3323 * @sk_buff: socket buffer with received data
3327 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3328 uint32_t status_err
, uint32_t csum
,
3329 struct sk_buff
*skb
)
3331 uint16_t status
= (uint16_t)status_err
;
3332 uint8_t errors
= (uint8_t)(status_err
>> 24);
3333 skb
->ip_summed
= CHECKSUM_NONE
;
3335 /* 82543 or newer only */
3336 if(unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3337 /* Ignore Checksum bit is set */
3338 if(unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3339 /* TCP/UDP checksum error bit is set */
3340 if(unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3341 /* let the stack verify checksum errors */
3342 adapter
->hw_csum_err
++;
3345 /* TCP/UDP Checksum has not been calculated */
3346 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3347 if(!(status
& E1000_RXD_STAT_TCPCS
))
3350 if(!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3353 /* It must be a TCP or UDP packet with a valid checksum */
3354 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3355 /* TCP checksum is good */
3356 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3357 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3358 /* IP fragment with UDP payload */
3359 /* Hardware complements the payload checksum, so we undo it
3360 * and then put the value in host order for further stack use.
3362 csum
= ntohl(csum
^ 0xFFFF);
3364 skb
->ip_summed
= CHECKSUM_HW
;
3366 adapter
->hw_csum_good
++;
3370 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3371 * @adapter: board private structure
3375 #ifdef CONFIG_E1000_NAPI
3376 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3377 struct e1000_rx_ring
*rx_ring
,
3378 int *work_done
, int work_to_do
)
3380 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3381 struct e1000_rx_ring
*rx_ring
)
3384 struct net_device
*netdev
= adapter
->netdev
;
3385 struct pci_dev
*pdev
= adapter
->pdev
;
3386 struct e1000_rx_desc
*rx_desc
;
3387 struct e1000_buffer
*buffer_info
;
3388 struct sk_buff
*skb
;
3389 unsigned long flags
;
3393 boolean_t cleaned
= FALSE
;
3395 i
= rx_ring
->next_to_clean
;
3396 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3398 while(rx_desc
->status
& E1000_RXD_STAT_DD
) {
3399 buffer_info
= &rx_ring
->buffer_info
[i
];
3400 #ifdef CONFIG_E1000_NAPI
3401 if(*work_done
>= work_to_do
)
3407 pci_unmap_single(pdev
,
3409 buffer_info
->length
,
3410 PCI_DMA_FROMDEVICE
);
3412 skb
= buffer_info
->skb
;
3413 length
= le16_to_cpu(rx_desc
->length
);
3415 if(unlikely(!(rx_desc
->status
& E1000_RXD_STAT_EOP
))) {
3416 /* All receives must fit into a single buffer */
3417 E1000_DBG("%s: Receive packet consumed multiple"
3418 " buffers\n", netdev
->name
);
3419 dev_kfree_skb_irq(skb
);
3423 if(unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3424 last_byte
= *(skb
->data
+ length
- 1);
3425 if(TBI_ACCEPT(&adapter
->hw
, rx_desc
->status
,
3426 rx_desc
->errors
, length
, last_byte
)) {
3427 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3428 e1000_tbi_adjust_stats(&adapter
->hw
,
3431 spin_unlock_irqrestore(&adapter
->stats_lock
,
3435 dev_kfree_skb_irq(skb
);
3441 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
3443 /* Receive Checksum Offload */
3444 e1000_rx_checksum(adapter
,
3445 (uint32_t)(rx_desc
->status
) |
3446 ((uint32_t)(rx_desc
->errors
) << 24),
3447 rx_desc
->csum
, skb
);
3448 skb
->protocol
= eth_type_trans(skb
, netdev
);
3449 #ifdef CONFIG_E1000_NAPI
3450 if(unlikely(adapter
->vlgrp
&&
3451 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3452 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3453 le16_to_cpu(rx_desc
->special
) &
3454 E1000_RXD_SPC_VLAN_MASK
);
3456 netif_receive_skb(skb
);
3458 #else /* CONFIG_E1000_NAPI */
3459 if(unlikely(adapter
->vlgrp
&&
3460 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3461 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3462 le16_to_cpu(rx_desc
->special
) &
3463 E1000_RXD_SPC_VLAN_MASK
);
3467 #endif /* CONFIG_E1000_NAPI */
3468 netdev
->last_rx
= jiffies
;
3472 rx_desc
->status
= 0;
3473 buffer_info
->skb
= NULL
;
3474 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3476 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3478 rx_ring
->next_to_clean
= i
;
3479 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3485 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3486 * @adapter: board private structure
3490 #ifdef CONFIG_E1000_NAPI
3491 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3492 struct e1000_rx_ring
*rx_ring
,
3493 int *work_done
, int work_to_do
)
3495 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3496 struct e1000_rx_ring
*rx_ring
)
3499 union e1000_rx_desc_packet_split
*rx_desc
;
3500 struct net_device
*netdev
= adapter
->netdev
;
3501 struct pci_dev
*pdev
= adapter
->pdev
;
3502 struct e1000_buffer
*buffer_info
;
3503 struct e1000_ps_page
*ps_page
;
3504 struct e1000_ps_page_dma
*ps_page_dma
;
3505 struct sk_buff
*skb
;
3507 uint32_t length
, staterr
;
3508 boolean_t cleaned
= FALSE
;
3510 i
= rx_ring
->next_to_clean
;
3511 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3512 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3514 while(staterr
& E1000_RXD_STAT_DD
) {
3515 buffer_info
= &rx_ring
->buffer_info
[i
];
3516 ps_page
= &rx_ring
->ps_page
[i
];
3517 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3518 #ifdef CONFIG_E1000_NAPI
3519 if(unlikely(*work_done
>= work_to_do
))
3524 pci_unmap_single(pdev
, buffer_info
->dma
,
3525 buffer_info
->length
,
3526 PCI_DMA_FROMDEVICE
);
3528 skb
= buffer_info
->skb
;
3530 if(unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3531 E1000_DBG("%s: Packet Split buffers didn't pick up"
3532 " the full packet\n", netdev
->name
);
3533 dev_kfree_skb_irq(skb
);
3537 if(unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3538 dev_kfree_skb_irq(skb
);
3542 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3544 if(unlikely(!length
)) {
3545 E1000_DBG("%s: Last part of the packet spanning"
3546 " multiple descriptors\n", netdev
->name
);
3547 dev_kfree_skb_irq(skb
);
3552 skb_put(skb
, length
);
3554 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3555 if(!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3558 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3559 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3560 ps_page_dma
->ps_page_dma
[j
] = 0;
3561 skb_shinfo(skb
)->frags
[j
].page
=
3562 ps_page
->ps_page
[j
];
3563 ps_page
->ps_page
[j
] = NULL
;
3564 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3565 skb_shinfo(skb
)->frags
[j
].size
= length
;
3566 skb_shinfo(skb
)->nr_frags
++;
3568 skb
->data_len
+= length
;
3571 e1000_rx_checksum(adapter
, staterr
,
3572 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3573 skb
->protocol
= eth_type_trans(skb
, netdev
);
3575 #ifdef HAVE_RX_ZERO_COPY
3576 if(likely(rx_desc
->wb
.upper
.header_status
&
3577 E1000_RXDPS_HDRSTAT_HDRSP
))
3578 skb_shinfo(skb
)->zero_copy
= TRUE
;
3580 #ifdef CONFIG_E1000_NAPI
3581 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3582 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3583 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3584 E1000_RXD_SPC_VLAN_MASK
);
3586 netif_receive_skb(skb
);
3588 #else /* CONFIG_E1000_NAPI */
3589 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3590 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3591 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3592 E1000_RXD_SPC_VLAN_MASK
);
3596 #endif /* CONFIG_E1000_NAPI */
3597 netdev
->last_rx
= jiffies
;
3601 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3602 buffer_info
->skb
= NULL
;
3603 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3605 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3606 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3608 rx_ring
->next_to_clean
= i
;
3609 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3615 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3616 * @adapter: address of board private structure
3620 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3621 struct e1000_rx_ring
*rx_ring
)
3623 struct net_device
*netdev
= adapter
->netdev
;
3624 struct pci_dev
*pdev
= adapter
->pdev
;
3625 struct e1000_rx_desc
*rx_desc
;
3626 struct e1000_buffer
*buffer_info
;
3627 struct sk_buff
*skb
;
3629 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3631 i
= rx_ring
->next_to_use
;
3632 buffer_info
= &rx_ring
->buffer_info
[i
];
3634 while(!buffer_info
->skb
) {
3635 skb
= dev_alloc_skb(bufsz
);
3637 if(unlikely(!skb
)) {
3638 /* Better luck next round */
3642 /* Fix for errata 23, can't cross 64kB boundary */
3643 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3644 struct sk_buff
*oldskb
= skb
;
3645 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3646 "at %p\n", bufsz
, skb
->data
);
3647 /* Try again, without freeing the previous */
3648 skb
= dev_alloc_skb(bufsz
);
3649 /* Failed allocation, critical failure */
3651 dev_kfree_skb(oldskb
);
3655 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3658 dev_kfree_skb(oldskb
);
3659 break; /* while !buffer_info->skb */
3661 /* Use new allocation */
3662 dev_kfree_skb(oldskb
);
3665 /* Make buffer alignment 2 beyond a 16 byte boundary
3666 * this will result in a 16 byte aligned IP header after
3667 * the 14 byte MAC header is removed
3669 skb_reserve(skb
, NET_IP_ALIGN
);
3673 buffer_info
->skb
= skb
;
3674 buffer_info
->length
= adapter
->rx_buffer_len
;
3675 buffer_info
->dma
= pci_map_single(pdev
,
3677 adapter
->rx_buffer_len
,
3678 PCI_DMA_FROMDEVICE
);
3680 /* Fix for errata 23, can't cross 64kB boundary */
3681 if (!e1000_check_64k_bound(adapter
,
3682 (void *)(unsigned long)buffer_info
->dma
,
3683 adapter
->rx_buffer_len
)) {
3684 DPRINTK(RX_ERR
, ERR
,
3685 "dma align check failed: %u bytes at %p\n",
3686 adapter
->rx_buffer_len
,
3687 (void *)(unsigned long)buffer_info
->dma
);
3689 buffer_info
->skb
= NULL
;
3691 pci_unmap_single(pdev
, buffer_info
->dma
,
3692 adapter
->rx_buffer_len
,
3693 PCI_DMA_FROMDEVICE
);
3695 break; /* while !buffer_info->skb */
3697 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3698 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3700 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3701 /* Force memory writes to complete before letting h/w
3702 * know there are new descriptors to fetch. (Only
3703 * applicable for weak-ordered memory model archs,
3704 * such as IA-64). */
3706 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3709 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3710 buffer_info
= &rx_ring
->buffer_info
[i
];
3713 rx_ring
->next_to_use
= i
;
3717 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3718 * @adapter: address of board private structure
3722 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3723 struct e1000_rx_ring
*rx_ring
)
3725 struct net_device
*netdev
= adapter
->netdev
;
3726 struct pci_dev
*pdev
= adapter
->pdev
;
3727 union e1000_rx_desc_packet_split
*rx_desc
;
3728 struct e1000_buffer
*buffer_info
;
3729 struct e1000_ps_page
*ps_page
;
3730 struct e1000_ps_page_dma
*ps_page_dma
;
3731 struct sk_buff
*skb
;
3734 i
= rx_ring
->next_to_use
;
3735 buffer_info
= &rx_ring
->buffer_info
[i
];
3736 ps_page
= &rx_ring
->ps_page
[i
];
3737 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3739 while(!buffer_info
->skb
) {
3740 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3742 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3743 if(unlikely(!ps_page
->ps_page
[j
])) {
3744 ps_page
->ps_page
[j
] =
3745 alloc_page(GFP_ATOMIC
);
3746 if(unlikely(!ps_page
->ps_page
[j
]))
3748 ps_page_dma
->ps_page_dma
[j
] =
3750 ps_page
->ps_page
[j
],
3752 PCI_DMA_FROMDEVICE
);
3754 /* Refresh the desc even if buffer_addrs didn't
3755 * change because each write-back erases this info.
3757 rx_desc
->read
.buffer_addr
[j
+1] =
3758 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3761 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3766 /* Make buffer alignment 2 beyond a 16 byte boundary
3767 * this will result in a 16 byte aligned IP header after
3768 * the 14 byte MAC header is removed
3770 skb_reserve(skb
, NET_IP_ALIGN
);
3774 buffer_info
->skb
= skb
;
3775 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3776 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3777 adapter
->rx_ps_bsize0
,
3778 PCI_DMA_FROMDEVICE
);
3780 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3782 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3783 /* Force memory writes to complete before letting h/w
3784 * know there are new descriptors to fetch. (Only
3785 * applicable for weak-ordered memory model archs,
3786 * such as IA-64). */
3788 /* Hardware increments by 16 bytes, but packet split
3789 * descriptors are 32 bytes...so we increment tail
3792 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3795 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3796 buffer_info
= &rx_ring
->buffer_info
[i
];
3797 ps_page
= &rx_ring
->ps_page
[i
];
3798 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3802 rx_ring
->next_to_use
= i
;
3806 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3811 e1000_smartspeed(struct e1000_adapter
*adapter
)
3813 uint16_t phy_status
;
3816 if((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3817 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3820 if(adapter
->smartspeed
== 0) {
3821 /* If Master/Slave config fault is asserted twice,
3822 * we assume back-to-back */
3823 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3824 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3825 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3826 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3827 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3828 if(phy_ctrl
& CR_1000T_MS_ENABLE
) {
3829 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3830 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3832 adapter
->smartspeed
++;
3833 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3834 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3836 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3837 MII_CR_RESTART_AUTO_NEG
);
3838 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3843 } else if(adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3844 /* If still no link, perhaps using 2/3 pair cable */
3845 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3846 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3847 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3848 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3849 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3850 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3851 MII_CR_RESTART_AUTO_NEG
);
3852 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3855 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3856 if(adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3857 adapter
->smartspeed
= 0;
3868 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3874 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3888 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3890 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3891 struct mii_ioctl_data
*data
= if_mii(ifr
);
3895 unsigned long flags
;
3897 if(adapter
->hw
.media_type
!= e1000_media_type_copper
)
3902 data
->phy_id
= adapter
->hw
.phy_addr
;
3905 if(!capable(CAP_NET_ADMIN
))
3907 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3908 if(e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
3910 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3913 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3916 if(!capable(CAP_NET_ADMIN
))
3918 if(data
->reg_num
& ~(0x1F))
3920 mii_reg
= data
->val_in
;
3921 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3922 if(e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
3924 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3927 if(adapter
->hw
.phy_type
== e1000_phy_m88
) {
3928 switch (data
->reg_num
) {
3930 if(mii_reg
& MII_CR_POWER_DOWN
)
3932 if(mii_reg
& MII_CR_AUTO_NEG_EN
) {
3933 adapter
->hw
.autoneg
= 1;
3934 adapter
->hw
.autoneg_advertised
= 0x2F;
3937 spddplx
= SPEED_1000
;
3938 else if (mii_reg
& 0x2000)
3939 spddplx
= SPEED_100
;
3942 spddplx
+= (mii_reg
& 0x100)
3945 retval
= e1000_set_spd_dplx(adapter
,
3948 spin_unlock_irqrestore(
3949 &adapter
->stats_lock
,
3954 if(netif_running(adapter
->netdev
)) {
3955 e1000_down(adapter
);
3958 e1000_reset(adapter
);
3960 case M88E1000_PHY_SPEC_CTRL
:
3961 case M88E1000_EXT_PHY_SPEC_CTRL
:
3962 if(e1000_phy_reset(&adapter
->hw
)) {
3963 spin_unlock_irqrestore(
3964 &adapter
->stats_lock
, flags
);
3970 switch (data
->reg_num
) {
3972 if(mii_reg
& MII_CR_POWER_DOWN
)
3974 if(netif_running(adapter
->netdev
)) {
3975 e1000_down(adapter
);
3978 e1000_reset(adapter
);
3982 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3987 return E1000_SUCCESS
;
3991 e1000_pci_set_mwi(struct e1000_hw
*hw
)
3993 struct e1000_adapter
*adapter
= hw
->back
;
3994 int ret_val
= pci_set_mwi(adapter
->pdev
);
3997 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4001 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4003 struct e1000_adapter
*adapter
= hw
->back
;
4005 pci_clear_mwi(adapter
->pdev
);
4009 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4011 struct e1000_adapter
*adapter
= hw
->back
;
4013 pci_read_config_word(adapter
->pdev
, reg
, value
);
4017 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4019 struct e1000_adapter
*adapter
= hw
->back
;
4021 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4025 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4031 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4037 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4039 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4040 uint32_t ctrl
, rctl
;
4042 e1000_irq_disable(adapter
);
4043 adapter
->vlgrp
= grp
;
4046 /* enable VLAN tag insert/strip */
4047 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4048 ctrl
|= E1000_CTRL_VME
;
4049 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4051 /* enable VLAN receive filtering */
4052 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4053 rctl
|= E1000_RCTL_VFE
;
4054 rctl
&= ~E1000_RCTL_CFIEN
;
4055 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4056 e1000_update_mng_vlan(adapter
);
4058 /* disable VLAN tag insert/strip */
4059 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4060 ctrl
&= ~E1000_CTRL_VME
;
4061 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4063 /* disable VLAN filtering */
4064 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4065 rctl
&= ~E1000_RCTL_VFE
;
4066 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4067 if(adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4068 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4069 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4073 e1000_irq_enable(adapter
);
4077 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4079 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4080 uint32_t vfta
, index
;
4081 if((adapter
->hw
.mng_cookie
.status
&
4082 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4083 (vid
== adapter
->mng_vlan_id
))
4085 /* add VID to filter table */
4086 index
= (vid
>> 5) & 0x7F;
4087 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4088 vfta
|= (1 << (vid
& 0x1F));
4089 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4093 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4095 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4096 uint32_t vfta
, index
;
4098 e1000_irq_disable(adapter
);
4101 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4103 e1000_irq_enable(adapter
);
4105 if((adapter
->hw
.mng_cookie
.status
&
4106 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4107 (vid
== adapter
->mng_vlan_id
))
4109 /* remove VID from filter table */
4110 index
= (vid
>> 5) & 0x7F;
4111 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4112 vfta
&= ~(1 << (vid
& 0x1F));
4113 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4117 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4119 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4121 if(adapter
->vlgrp
) {
4123 for(vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4124 if(!adapter
->vlgrp
->vlan_devices
[vid
])
4126 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4132 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4134 adapter
->hw
.autoneg
= 0;
4136 /* Fiber NICs only allow 1000 gbps Full duplex */
4137 if((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4138 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4139 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4144 case SPEED_10
+ DUPLEX_HALF
:
4145 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4147 case SPEED_10
+ DUPLEX_FULL
:
4148 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4150 case SPEED_100
+ DUPLEX_HALF
:
4151 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4153 case SPEED_100
+ DUPLEX_FULL
:
4154 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4156 case SPEED_1000
+ DUPLEX_FULL
:
4157 adapter
->hw
.autoneg
= 1;
4158 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4160 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4162 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4169 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4171 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4172 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4173 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
, swsm
;
4174 uint32_t wufc
= adapter
->wol
;
4176 netif_device_detach(netdev
);
4178 if(netif_running(netdev
))
4179 e1000_down(adapter
);
4181 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4182 if(status
& E1000_STATUS_LU
)
4183 wufc
&= ~E1000_WUFC_LNKC
;
4186 e1000_setup_rctl(adapter
);
4187 e1000_set_multi(netdev
);
4189 /* turn on all-multi mode if wake on multicast is enabled */
4190 if(adapter
->wol
& E1000_WUFC_MC
) {
4191 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4192 rctl
|= E1000_RCTL_MPE
;
4193 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4196 if(adapter
->hw
.mac_type
>= e1000_82540
) {
4197 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4198 /* advertise wake from D3Cold */
4199 #define E1000_CTRL_ADVD3WUC 0x00100000
4200 /* phy power management enable */
4201 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4202 ctrl
|= E1000_CTRL_ADVD3WUC
|
4203 E1000_CTRL_EN_PHY_PWR_MGMT
;
4204 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4207 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
4208 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4209 /* keep the laser running in D3 */
4210 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4211 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4212 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4215 /* Allow time for pending master requests to run */
4216 e1000_disable_pciex_master(&adapter
->hw
);
4218 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4219 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4220 pci_enable_wake(pdev
, 3, 1);
4221 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4223 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4224 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4225 pci_enable_wake(pdev
, 3, 0);
4226 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4229 pci_save_state(pdev
);
4231 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4232 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4233 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4234 if(manc
& E1000_MANC_SMBUS_EN
) {
4235 manc
|= E1000_MANC_ARP_EN
;
4236 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4237 pci_enable_wake(pdev
, 3, 1);
4238 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4242 switch(adapter
->hw
.mac_type
) {
4245 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4246 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4247 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
4250 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4251 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4252 swsm
& ~E1000_SWSM_DRV_LOAD
);
4258 pci_disable_device(pdev
);
4259 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4266 e1000_resume(struct pci_dev
*pdev
)
4268 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4269 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4270 uint32_t manc
, ret_val
, swsm
;
4273 pci_set_power_state(pdev
, PCI_D0
);
4274 pci_restore_state(pdev
);
4275 ret_val
= pci_enable_device(pdev
);
4276 pci_set_master(pdev
);
4278 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4279 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4281 e1000_reset(adapter
);
4282 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4284 if(netif_running(netdev
))
4287 netif_device_attach(netdev
);
4289 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4290 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4291 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4292 manc
&= ~(E1000_MANC_ARP_EN
);
4293 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4296 switch(adapter
->hw
.mac_type
) {
4299 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4300 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4301 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
4304 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4305 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4306 swsm
| E1000_SWSM_DRV_LOAD
);
4315 #ifdef CONFIG_NET_POLL_CONTROLLER
4317 * Polling 'interrupt' - used by things like netconsole to send skbs
4318 * without having to re-enable interrupts. It's not called while
4319 * the interrupt routine is executing.
4322 e1000_netpoll(struct net_device
*netdev
)
4324 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4325 disable_irq(adapter
->pdev
->irq
);
4326 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4327 e1000_clean_tx_irq(adapter
);
4328 enable_irq(adapter
->pdev
->irq
);