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
);
780 #ifdef CONFIG_E1000_NAPI
784 flush_scheduled_work();
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
1487 #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
1488 (((S) & (PAGE_SIZE - 1)) ? 1 : 0))
1490 e1000_setup_rctl(struct e1000_adapter
*adapter
)
1492 uint32_t rctl
, rfctl
;
1493 uint32_t psrctl
= 0;
1494 #ifdef CONFIG_E1000_PACKET_SPLIT
1498 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1500 rctl
&= ~(3 << E1000_RCTL_MO_SHIFT
);
1502 rctl
|= E1000_RCTL_EN
| E1000_RCTL_BAM
|
1503 E1000_RCTL_LBM_NO
| E1000_RCTL_RDMTS_HALF
|
1504 (adapter
->hw
.mc_filter_type
<< E1000_RCTL_MO_SHIFT
);
1506 if(adapter
->hw
.tbi_compatibility_on
== 1)
1507 rctl
|= E1000_RCTL_SBP
;
1509 rctl
&= ~E1000_RCTL_SBP
;
1511 if (adapter
->netdev
->mtu
<= ETH_DATA_LEN
)
1512 rctl
&= ~E1000_RCTL_LPE
;
1514 rctl
|= E1000_RCTL_LPE
;
1516 /* Setup buffer sizes */
1517 if(adapter
->hw
.mac_type
>= e1000_82571
) {
1518 /* We can now specify buffers in 1K increments.
1519 * BSIZE and BSEX are ignored in this case. */
1520 rctl
|= adapter
->rx_buffer_len
<< 0x11;
1522 rctl
&= ~E1000_RCTL_SZ_4096
;
1523 rctl
|= E1000_RCTL_BSEX
;
1524 switch (adapter
->rx_buffer_len
) {
1525 case E1000_RXBUFFER_2048
:
1527 rctl
|= E1000_RCTL_SZ_2048
;
1528 rctl
&= ~E1000_RCTL_BSEX
;
1530 case E1000_RXBUFFER_4096
:
1531 rctl
|= E1000_RCTL_SZ_4096
;
1533 case E1000_RXBUFFER_8192
:
1534 rctl
|= E1000_RCTL_SZ_8192
;
1536 case E1000_RXBUFFER_16384
:
1537 rctl
|= E1000_RCTL_SZ_16384
;
1542 #ifdef CONFIG_E1000_PACKET_SPLIT
1543 /* 82571 and greater support packet-split where the protocol
1544 * header is placed in skb->data and the packet data is
1545 * placed in pages hanging off of skb_shinfo(skb)->nr_frags.
1546 * In the case of a non-split, skb->data is linearly filled,
1547 * followed by the page buffers. Therefore, skb->data is
1548 * sized to hold the largest protocol header.
1550 pages
= PAGE_USE_COUNT(adapter
->netdev
->mtu
);
1551 if ((adapter
->hw
.mac_type
> e1000_82547_rev_2
) && (pages
<= 3) &&
1553 adapter
->rx_ps_pages
= pages
;
1555 adapter
->rx_ps_pages
= 0;
1557 if (adapter
->rx_ps_pages
) {
1558 /* Configure extra packet-split registers */
1559 rfctl
= E1000_READ_REG(&adapter
->hw
, RFCTL
);
1560 rfctl
|= E1000_RFCTL_EXTEN
;
1561 /* disable IPv6 packet split support */
1562 rfctl
|= E1000_RFCTL_IPV6_DIS
;
1563 E1000_WRITE_REG(&adapter
->hw
, RFCTL
, rfctl
);
1565 rctl
|= E1000_RCTL_DTYP_PS
| E1000_RCTL_SECRC
;
1567 psrctl
|= adapter
->rx_ps_bsize0
>>
1568 E1000_PSRCTL_BSIZE0_SHIFT
;
1570 switch (adapter
->rx_ps_pages
) {
1572 psrctl
|= PAGE_SIZE
<<
1573 E1000_PSRCTL_BSIZE3_SHIFT
;
1575 psrctl
|= PAGE_SIZE
<<
1576 E1000_PSRCTL_BSIZE2_SHIFT
;
1578 psrctl
|= PAGE_SIZE
>>
1579 E1000_PSRCTL_BSIZE1_SHIFT
;
1583 E1000_WRITE_REG(&adapter
->hw
, PSRCTL
, psrctl
);
1586 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1590 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1591 * @adapter: board private structure
1593 * Configure the Rx unit of the MAC after a reset.
1597 e1000_configure_rx(struct e1000_adapter
*adapter
)
1600 struct e1000_hw
*hw
= &adapter
->hw
;
1601 uint32_t rdlen
, rctl
, rxcsum
, ctrl_ext
;
1602 #ifdef CONFIG_E1000_MQ
1603 uint32_t reta
, mrqc
;
1607 if (adapter
->rx_ps_pages
) {
1608 rdlen
= adapter
->rx_ring
[0].count
*
1609 sizeof(union e1000_rx_desc_packet_split
);
1610 adapter
->clean_rx
= e1000_clean_rx_irq_ps
;
1611 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers_ps
;
1613 rdlen
= adapter
->rx_ring
[0].count
*
1614 sizeof(struct e1000_rx_desc
);
1615 adapter
->clean_rx
= e1000_clean_rx_irq
;
1616 adapter
->alloc_rx_buf
= e1000_alloc_rx_buffers
;
1619 /* disable receives while setting up the descriptors */
1620 rctl
= E1000_READ_REG(hw
, RCTL
);
1621 E1000_WRITE_REG(hw
, RCTL
, rctl
& ~E1000_RCTL_EN
);
1623 /* set the Receive Delay Timer Register */
1624 E1000_WRITE_REG(hw
, RDTR
, adapter
->rx_int_delay
);
1626 if (hw
->mac_type
>= e1000_82540
) {
1627 E1000_WRITE_REG(hw
, RADV
, adapter
->rx_abs_int_delay
);
1628 if(adapter
->itr
> 1)
1629 E1000_WRITE_REG(hw
, ITR
,
1630 1000000000 / (adapter
->itr
* 256));
1633 if (hw
->mac_type
>= e1000_82571
) {
1634 /* Reset delay timers after every interrupt */
1635 ctrl_ext
= E1000_READ_REG(hw
, CTRL_EXT
);
1636 ctrl_ext
|= E1000_CTRL_EXT_CANC
;
1637 E1000_WRITE_REG(hw
, CTRL_EXT
, ctrl_ext
);
1638 E1000_WRITE_FLUSH(hw
);
1641 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1642 * the Base and Length of the Rx Descriptor Ring */
1643 switch (adapter
->num_queues
) {
1644 #ifdef CONFIG_E1000_MQ
1646 rdba
= adapter
->rx_ring
[1].dma
;
1647 E1000_WRITE_REG(hw
, RDBAL1
, (rdba
& 0x00000000ffffffffULL
));
1648 E1000_WRITE_REG(hw
, RDBAH1
, (rdba
>> 32));
1649 E1000_WRITE_REG(hw
, RDLEN1
, rdlen
);
1650 E1000_WRITE_REG(hw
, RDH1
, 0);
1651 E1000_WRITE_REG(hw
, RDT1
, 0);
1652 adapter
->rx_ring
[1].rdh
= E1000_RDH1
;
1653 adapter
->rx_ring
[1].rdt
= E1000_RDT1
;
1658 rdba
= adapter
->rx_ring
[0].dma
;
1659 E1000_WRITE_REG(hw
, RDBAL
, (rdba
& 0x00000000ffffffffULL
));
1660 E1000_WRITE_REG(hw
, RDBAH
, (rdba
>> 32));
1661 E1000_WRITE_REG(hw
, RDLEN
, rdlen
);
1662 E1000_WRITE_REG(hw
, RDH
, 0);
1663 E1000_WRITE_REG(hw
, RDT
, 0);
1664 adapter
->rx_ring
[0].rdh
= E1000_RDH
;
1665 adapter
->rx_ring
[0].rdt
= E1000_RDT
;
1669 #ifdef CONFIG_E1000_MQ
1670 if (adapter
->num_queues
> 1) {
1671 uint32_t random
[10];
1673 get_random_bytes(&random
[0], 40);
1675 if (hw
->mac_type
<= e1000_82572
) {
1676 E1000_WRITE_REG(hw
, RSSIR
, 0);
1677 E1000_WRITE_REG(hw
, RSSIM
, 0);
1680 switch (adapter
->num_queues
) {
1684 mrqc
= E1000_MRQC_ENABLE_RSS_2Q
;
1688 /* Fill out redirection table */
1689 for (i
= 0; i
< 32; i
++)
1690 E1000_WRITE_REG_ARRAY(hw
, RETA
, i
, reta
);
1691 /* Fill out hash function seeds */
1692 for (i
= 0; i
< 10; i
++)
1693 E1000_WRITE_REG_ARRAY(hw
, RSSRK
, i
, random
[i
]);
1695 mrqc
|= (E1000_MRQC_RSS_FIELD_IPV4
|
1696 E1000_MRQC_RSS_FIELD_IPV4_TCP
);
1697 E1000_WRITE_REG(hw
, MRQC
, mrqc
);
1700 /* Multiqueue and packet checksumming are mutually exclusive. */
1701 if (hw
->mac_type
>= e1000_82571
) {
1702 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1703 rxcsum
|= E1000_RXCSUM_PCSD
;
1704 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1709 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
1710 if (hw
->mac_type
>= e1000_82543
) {
1711 rxcsum
= E1000_READ_REG(hw
, RXCSUM
);
1712 if(adapter
->rx_csum
== TRUE
) {
1713 rxcsum
|= E1000_RXCSUM_TUOFL
;
1715 /* Enable 82571 IPv4 payload checksum for UDP fragments
1716 * Must be used in conjunction with packet-split. */
1717 if ((hw
->mac_type
>= e1000_82571
) &&
1718 (adapter
->rx_ps_pages
)) {
1719 rxcsum
|= E1000_RXCSUM_IPPCSE
;
1722 rxcsum
&= ~E1000_RXCSUM_TUOFL
;
1723 /* don't need to clear IPPCSE as it defaults to 0 */
1725 E1000_WRITE_REG(hw
, RXCSUM
, rxcsum
);
1727 #endif /* CONFIG_E1000_MQ */
1729 if (hw
->mac_type
== e1000_82573
)
1730 E1000_WRITE_REG(hw
, ERT
, 0x0100);
1732 /* Enable Receives */
1733 E1000_WRITE_REG(hw
, RCTL
, rctl
);
1737 * e1000_free_tx_resources - Free Tx Resources per Queue
1738 * @adapter: board private structure
1739 * @tx_ring: Tx descriptor ring for a specific queue
1741 * Free all transmit software resources
1745 e1000_free_tx_resources(struct e1000_adapter
*adapter
,
1746 struct e1000_tx_ring
*tx_ring
)
1748 struct pci_dev
*pdev
= adapter
->pdev
;
1750 e1000_clean_tx_ring(adapter
, tx_ring
);
1752 vfree(tx_ring
->buffer_info
);
1753 tx_ring
->buffer_info
= NULL
;
1755 pci_free_consistent(pdev
, tx_ring
->size
, tx_ring
->desc
, tx_ring
->dma
);
1757 tx_ring
->desc
= NULL
;
1761 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
1762 * @adapter: board private structure
1764 * Free all transmit software resources
1768 e1000_free_all_tx_resources(struct e1000_adapter
*adapter
)
1772 for (i
= 0; i
< adapter
->num_queues
; i
++)
1773 e1000_free_tx_resources(adapter
, &adapter
->tx_ring
[i
]);
1777 e1000_unmap_and_free_tx_resource(struct e1000_adapter
*adapter
,
1778 struct e1000_buffer
*buffer_info
)
1780 if(buffer_info
->dma
) {
1781 pci_unmap_page(adapter
->pdev
,
1783 buffer_info
->length
,
1785 buffer_info
->dma
= 0;
1787 if(buffer_info
->skb
) {
1788 dev_kfree_skb_any(buffer_info
->skb
);
1789 buffer_info
->skb
= NULL
;
1794 * e1000_clean_tx_ring - Free Tx Buffers
1795 * @adapter: board private structure
1796 * @tx_ring: ring to be cleaned
1800 e1000_clean_tx_ring(struct e1000_adapter
*adapter
,
1801 struct e1000_tx_ring
*tx_ring
)
1803 struct e1000_buffer
*buffer_info
;
1807 /* Free all the Tx ring sk_buffs */
1809 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
1810 e1000_unmap_and_free_tx_resource(adapter
,
1811 &tx_ring
->previous_buffer_info
);
1814 for(i
= 0; i
< tx_ring
->count
; i
++) {
1815 buffer_info
= &tx_ring
->buffer_info
[i
];
1816 e1000_unmap_and_free_tx_resource(adapter
, buffer_info
);
1819 size
= sizeof(struct e1000_buffer
) * tx_ring
->count
;
1820 memset(tx_ring
->buffer_info
, 0, size
);
1822 /* Zero out the descriptor ring */
1824 memset(tx_ring
->desc
, 0, tx_ring
->size
);
1826 tx_ring
->next_to_use
= 0;
1827 tx_ring
->next_to_clean
= 0;
1829 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdh
);
1830 writel(0, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
1834 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
1835 * @adapter: board private structure
1839 e1000_clean_all_tx_rings(struct e1000_adapter
*adapter
)
1843 for (i
= 0; i
< adapter
->num_queues
; i
++)
1844 e1000_clean_tx_ring(adapter
, &adapter
->tx_ring
[i
]);
1848 * e1000_free_rx_resources - Free Rx Resources
1849 * @adapter: board private structure
1850 * @rx_ring: ring to clean the resources from
1852 * Free all receive software resources
1856 e1000_free_rx_resources(struct e1000_adapter
*adapter
,
1857 struct e1000_rx_ring
*rx_ring
)
1859 struct pci_dev
*pdev
= adapter
->pdev
;
1861 e1000_clean_rx_ring(adapter
, rx_ring
);
1863 vfree(rx_ring
->buffer_info
);
1864 rx_ring
->buffer_info
= NULL
;
1865 kfree(rx_ring
->ps_page
);
1866 rx_ring
->ps_page
= NULL
;
1867 kfree(rx_ring
->ps_page_dma
);
1868 rx_ring
->ps_page_dma
= NULL
;
1870 pci_free_consistent(pdev
, rx_ring
->size
, rx_ring
->desc
, rx_ring
->dma
);
1872 rx_ring
->desc
= NULL
;
1876 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1877 * @adapter: board private structure
1879 * Free all receive software resources
1883 e1000_free_all_rx_resources(struct e1000_adapter
*adapter
)
1887 for (i
= 0; i
< adapter
->num_queues
; i
++)
1888 e1000_free_rx_resources(adapter
, &adapter
->rx_ring
[i
]);
1892 * e1000_clean_rx_ring - Free Rx Buffers per Queue
1893 * @adapter: board private structure
1894 * @rx_ring: ring to free buffers from
1898 e1000_clean_rx_ring(struct e1000_adapter
*adapter
,
1899 struct e1000_rx_ring
*rx_ring
)
1901 struct e1000_buffer
*buffer_info
;
1902 struct e1000_ps_page
*ps_page
;
1903 struct e1000_ps_page_dma
*ps_page_dma
;
1904 struct pci_dev
*pdev
= adapter
->pdev
;
1908 /* Free all the Rx ring sk_buffs */
1910 for(i
= 0; i
< rx_ring
->count
; i
++) {
1911 buffer_info
= &rx_ring
->buffer_info
[i
];
1912 if(buffer_info
->skb
) {
1913 ps_page
= &rx_ring
->ps_page
[i
];
1914 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
1915 pci_unmap_single(pdev
,
1917 buffer_info
->length
,
1918 PCI_DMA_FROMDEVICE
);
1920 dev_kfree_skb(buffer_info
->skb
);
1921 buffer_info
->skb
= NULL
;
1923 for(j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
1924 if(!ps_page
->ps_page
[j
]) break;
1925 pci_unmap_single(pdev
,
1926 ps_page_dma
->ps_page_dma
[j
],
1927 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
1928 ps_page_dma
->ps_page_dma
[j
] = 0;
1929 put_page(ps_page
->ps_page
[j
]);
1930 ps_page
->ps_page
[j
] = NULL
;
1935 size
= sizeof(struct e1000_buffer
) * rx_ring
->count
;
1936 memset(rx_ring
->buffer_info
, 0, size
);
1937 size
= sizeof(struct e1000_ps_page
) * rx_ring
->count
;
1938 memset(rx_ring
->ps_page
, 0, size
);
1939 size
= sizeof(struct e1000_ps_page_dma
) * rx_ring
->count
;
1940 memset(rx_ring
->ps_page_dma
, 0, size
);
1942 /* Zero out the descriptor ring */
1944 memset(rx_ring
->desc
, 0, rx_ring
->size
);
1946 rx_ring
->next_to_clean
= 0;
1947 rx_ring
->next_to_use
= 0;
1949 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdh
);
1950 writel(0, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
1954 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
1955 * @adapter: board private structure
1959 e1000_clean_all_rx_rings(struct e1000_adapter
*adapter
)
1963 for (i
= 0; i
< adapter
->num_queues
; i
++)
1964 e1000_clean_rx_ring(adapter
, &adapter
->rx_ring
[i
]);
1967 /* The 82542 2.0 (revision 2) needs to have the receive unit in reset
1968 * and memory write and invalidate disabled for certain operations
1971 e1000_enter_82542_rst(struct e1000_adapter
*adapter
)
1973 struct net_device
*netdev
= adapter
->netdev
;
1976 e1000_pci_clear_mwi(&adapter
->hw
);
1978 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1979 rctl
|= E1000_RCTL_RST
;
1980 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1981 E1000_WRITE_FLUSH(&adapter
->hw
);
1984 if(netif_running(netdev
))
1985 e1000_clean_all_rx_rings(adapter
);
1989 e1000_leave_82542_rst(struct e1000_adapter
*adapter
)
1991 struct net_device
*netdev
= adapter
->netdev
;
1994 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
1995 rctl
&= ~E1000_RCTL_RST
;
1996 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
1997 E1000_WRITE_FLUSH(&adapter
->hw
);
2000 if(adapter
->hw
.pci_cmd_word
& PCI_COMMAND_INVALIDATE
)
2001 e1000_pci_set_mwi(&adapter
->hw
);
2003 if(netif_running(netdev
)) {
2004 e1000_configure_rx(adapter
);
2005 e1000_alloc_rx_buffers(adapter
, &adapter
->rx_ring
[0]);
2010 * e1000_set_mac - Change the Ethernet Address of the NIC
2011 * @netdev: network interface device structure
2012 * @p: pointer to an address structure
2014 * Returns 0 on success, negative on failure
2018 e1000_set_mac(struct net_device
*netdev
, void *p
)
2020 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2021 struct sockaddr
*addr
= p
;
2023 if(!is_valid_ether_addr(addr
->sa_data
))
2024 return -EADDRNOTAVAIL
;
2026 /* 82542 2.0 needs to be in reset to write receive address registers */
2028 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2029 e1000_enter_82542_rst(adapter
);
2031 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
2032 memcpy(adapter
->hw
.mac_addr
, addr
->sa_data
, netdev
->addr_len
);
2034 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2036 /* With 82571 controllers, LAA may be overwritten (with the default)
2037 * due to controller reset from the other port. */
2038 if (adapter
->hw
.mac_type
== e1000_82571
) {
2039 /* activate the work around */
2040 adapter
->hw
.laa_is_present
= 1;
2042 /* Hold a copy of the LAA in RAR[14] This is done so that
2043 * between the time RAR[0] gets clobbered and the time it
2044 * gets fixed (in e1000_watchdog), the actual LAA is in one
2045 * of the RARs and no incoming packets directed to this port
2046 * are dropped. Eventaully the LAA will be in RAR[0] and
2048 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
,
2049 E1000_RAR_ENTRIES
- 1);
2052 if(adapter
->hw
.mac_type
== e1000_82542_rev2_0
)
2053 e1000_leave_82542_rst(adapter
);
2059 * e1000_set_multi - Multicast and Promiscuous mode set
2060 * @netdev: network interface device structure
2062 * The set_multi entry point is called whenever the multicast address
2063 * list or the network interface flags are updated. This routine is
2064 * responsible for configuring the hardware for proper multicast,
2065 * promiscuous mode, and all-multi behavior.
2069 e1000_set_multi(struct net_device
*netdev
)
2071 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2072 struct e1000_hw
*hw
= &adapter
->hw
;
2073 struct dev_mc_list
*mc_ptr
;
2075 uint32_t hash_value
;
2076 int i
, rar_entries
= E1000_RAR_ENTRIES
;
2078 /* reserve RAR[14] for LAA over-write work-around */
2079 if (adapter
->hw
.mac_type
== e1000_82571
)
2082 /* Check for Promiscuous and All Multicast modes */
2084 rctl
= E1000_READ_REG(hw
, RCTL
);
2086 if(netdev
->flags
& IFF_PROMISC
) {
2087 rctl
|= (E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2088 } else if(netdev
->flags
& IFF_ALLMULTI
) {
2089 rctl
|= E1000_RCTL_MPE
;
2090 rctl
&= ~E1000_RCTL_UPE
;
2092 rctl
&= ~(E1000_RCTL_UPE
| E1000_RCTL_MPE
);
2095 E1000_WRITE_REG(hw
, RCTL
, rctl
);
2097 /* 82542 2.0 needs to be in reset to write receive address registers */
2099 if(hw
->mac_type
== e1000_82542_rev2_0
)
2100 e1000_enter_82542_rst(adapter
);
2102 /* load the first 14 multicast address into the exact filters 1-14
2103 * RAR 0 is used for the station MAC adddress
2104 * if there are not 14 addresses, go ahead and clear the filters
2105 * -- with 82571 controllers only 0-13 entries are filled here
2107 mc_ptr
= netdev
->mc_list
;
2109 for(i
= 1; i
< rar_entries
; i
++) {
2111 e1000_rar_set(hw
, mc_ptr
->dmi_addr
, i
);
2112 mc_ptr
= mc_ptr
->next
;
2114 E1000_WRITE_REG_ARRAY(hw
, RA
, i
<< 1, 0);
2115 E1000_WRITE_REG_ARRAY(hw
, RA
, (i
<< 1) + 1, 0);
2119 /* clear the old settings from the multicast hash table */
2121 for(i
= 0; i
< E1000_NUM_MTA_REGISTERS
; i
++)
2122 E1000_WRITE_REG_ARRAY(hw
, MTA
, i
, 0);
2124 /* load any remaining addresses into the hash table */
2126 for(; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
2127 hash_value
= e1000_hash_mc_addr(hw
, mc_ptr
->dmi_addr
);
2128 e1000_mta_set(hw
, hash_value
);
2131 if(hw
->mac_type
== e1000_82542_rev2_0
)
2132 e1000_leave_82542_rst(adapter
);
2135 /* Need to wait a few seconds after link up to get diagnostic information from
2139 e1000_update_phy_info(unsigned long data
)
2141 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2142 e1000_phy_get_info(&adapter
->hw
, &adapter
->phy_info
);
2146 * e1000_82547_tx_fifo_stall - Timer Call-back
2147 * @data: pointer to adapter cast into an unsigned long
2151 e1000_82547_tx_fifo_stall(unsigned long data
)
2153 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2154 struct net_device
*netdev
= adapter
->netdev
;
2157 if(atomic_read(&adapter
->tx_fifo_stall
)) {
2158 if((E1000_READ_REG(&adapter
->hw
, TDT
) ==
2159 E1000_READ_REG(&adapter
->hw
, TDH
)) &&
2160 (E1000_READ_REG(&adapter
->hw
, TDFT
) ==
2161 E1000_READ_REG(&adapter
->hw
, TDFH
)) &&
2162 (E1000_READ_REG(&adapter
->hw
, TDFTS
) ==
2163 E1000_READ_REG(&adapter
->hw
, TDFHS
))) {
2164 tctl
= E1000_READ_REG(&adapter
->hw
, TCTL
);
2165 E1000_WRITE_REG(&adapter
->hw
, TCTL
,
2166 tctl
& ~E1000_TCTL_EN
);
2167 E1000_WRITE_REG(&adapter
->hw
, TDFT
,
2168 adapter
->tx_head_addr
);
2169 E1000_WRITE_REG(&adapter
->hw
, TDFH
,
2170 adapter
->tx_head_addr
);
2171 E1000_WRITE_REG(&adapter
->hw
, TDFTS
,
2172 adapter
->tx_head_addr
);
2173 E1000_WRITE_REG(&adapter
->hw
, TDFHS
,
2174 adapter
->tx_head_addr
);
2175 E1000_WRITE_REG(&adapter
->hw
, TCTL
, tctl
);
2176 E1000_WRITE_FLUSH(&adapter
->hw
);
2178 adapter
->tx_fifo_head
= 0;
2179 atomic_set(&adapter
->tx_fifo_stall
, 0);
2180 netif_wake_queue(netdev
);
2182 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
+ 1);
2188 * e1000_watchdog - Timer Call-back
2189 * @data: pointer to adapter cast into an unsigned long
2192 e1000_watchdog(unsigned long data
)
2194 struct e1000_adapter
*adapter
= (struct e1000_adapter
*) data
;
2196 /* Do the rest outside of interrupt context */
2197 schedule_work(&adapter
->watchdog_task
);
2201 e1000_watchdog_task(struct e1000_adapter
*adapter
)
2203 struct net_device
*netdev
= adapter
->netdev
;
2204 struct e1000_tx_ring
*txdr
= &adapter
->tx_ring
[0];
2207 e1000_check_for_link(&adapter
->hw
);
2208 if (adapter
->hw
.mac_type
== e1000_82573
) {
2209 e1000_enable_tx_pkt_filtering(&adapter
->hw
);
2210 if(adapter
->mng_vlan_id
!= adapter
->hw
.mng_cookie
.vlan_id
)
2211 e1000_update_mng_vlan(adapter
);
2214 if((adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) &&
2215 !(E1000_READ_REG(&adapter
->hw
, TXCW
) & E1000_TXCW_ANE
))
2216 link
= !adapter
->hw
.serdes_link_down
;
2218 link
= E1000_READ_REG(&adapter
->hw
, STATUS
) & E1000_STATUS_LU
;
2221 if(!netif_carrier_ok(netdev
)) {
2222 e1000_get_speed_and_duplex(&adapter
->hw
,
2223 &adapter
->link_speed
,
2224 &adapter
->link_duplex
);
2226 DPRINTK(LINK
, INFO
, "NIC Link is Up %d Mbps %s\n",
2227 adapter
->link_speed
,
2228 adapter
->link_duplex
== FULL_DUPLEX
?
2229 "Full Duplex" : "Half Duplex");
2231 netif_carrier_on(netdev
);
2232 netif_wake_queue(netdev
);
2233 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2234 adapter
->smartspeed
= 0;
2237 if(netif_carrier_ok(netdev
)) {
2238 adapter
->link_speed
= 0;
2239 adapter
->link_duplex
= 0;
2240 DPRINTK(LINK
, INFO
, "NIC Link is Down\n");
2241 netif_carrier_off(netdev
);
2242 netif_stop_queue(netdev
);
2243 mod_timer(&adapter
->phy_info_timer
, jiffies
+ 2 * HZ
);
2246 e1000_smartspeed(adapter
);
2249 e1000_update_stats(adapter
);
2251 adapter
->hw
.tx_packet_delta
= adapter
->stats
.tpt
- adapter
->tpt_old
;
2252 adapter
->tpt_old
= adapter
->stats
.tpt
;
2253 adapter
->hw
.collision_delta
= adapter
->stats
.colc
- adapter
->colc_old
;
2254 adapter
->colc_old
= adapter
->stats
.colc
;
2256 adapter
->gorcl
= adapter
->stats
.gorcl
- adapter
->gorcl_old
;
2257 adapter
->gorcl_old
= adapter
->stats
.gorcl
;
2258 adapter
->gotcl
= adapter
->stats
.gotcl
- adapter
->gotcl_old
;
2259 adapter
->gotcl_old
= adapter
->stats
.gotcl
;
2261 e1000_update_adaptive(&adapter
->hw
);
2263 if (adapter
->num_queues
== 1 && !netif_carrier_ok(netdev
)) {
2264 if (E1000_DESC_UNUSED(txdr
) + 1 < txdr
->count
) {
2265 /* We've lost link, so the controller stops DMA,
2266 * but we've got queued Tx work that's never going
2267 * to get done, so reset controller to flush Tx.
2268 * (Do the reset outside of interrupt context). */
2269 schedule_work(&adapter
->tx_timeout_task
);
2273 /* Dynamic mode for Interrupt Throttle Rate (ITR) */
2274 if(adapter
->hw
.mac_type
>= e1000_82540
&& adapter
->itr
== 1) {
2275 /* Symmetric Tx/Rx gets a reduced ITR=2000; Total
2276 * asymmetrical Tx or Rx gets ITR=8000; everyone
2277 * else is between 2000-8000. */
2278 uint32_t goc
= (adapter
->gotcl
+ adapter
->gorcl
) / 10000;
2279 uint32_t dif
= (adapter
->gotcl
> adapter
->gorcl
?
2280 adapter
->gotcl
- adapter
->gorcl
:
2281 adapter
->gorcl
- adapter
->gotcl
) / 10000;
2282 uint32_t itr
= goc
> 0 ? (dif
* 6000 / goc
+ 2000) : 8000;
2283 E1000_WRITE_REG(&adapter
->hw
, ITR
, 1000000000 / (itr
* 256));
2286 /* Cause software interrupt to ensure rx ring is cleaned */
2287 E1000_WRITE_REG(&adapter
->hw
, ICS
, E1000_ICS_RXDMT0
);
2289 /* Force detection of hung controller every watchdog period */
2290 adapter
->detect_tx_hung
= TRUE
;
2292 /* With 82571 controllers, LAA may be overwritten due to controller
2293 * reset from the other port. Set the appropriate LAA in RAR[0] */
2294 if (adapter
->hw
.mac_type
== e1000_82571
&& adapter
->hw
.laa_is_present
)
2295 e1000_rar_set(&adapter
->hw
, adapter
->hw
.mac_addr
, 0);
2297 /* Reset the timer */
2298 mod_timer(&adapter
->watchdog_timer
, jiffies
+ 2 * HZ
);
2301 #define E1000_TX_FLAGS_CSUM 0x00000001
2302 #define E1000_TX_FLAGS_VLAN 0x00000002
2303 #define E1000_TX_FLAGS_TSO 0x00000004
2304 #define E1000_TX_FLAGS_IPV4 0x00000008
2305 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2306 #define E1000_TX_FLAGS_VLAN_SHIFT 16
2309 e1000_tso(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2310 struct sk_buff
*skb
)
2313 struct e1000_context_desc
*context_desc
;
2315 uint32_t cmd_length
= 0;
2316 uint16_t ipcse
= 0, tucse
, mss
;
2317 uint8_t ipcss
, ipcso
, tucss
, tucso
, hdr_len
;
2320 if(skb_shinfo(skb
)->tso_size
) {
2321 if (skb_header_cloned(skb
)) {
2322 err
= pskb_expand_head(skb
, 0, 0, GFP_ATOMIC
);
2327 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2328 mss
= skb_shinfo(skb
)->tso_size
;
2329 if(skb
->protocol
== ntohs(ETH_P_IP
)) {
2330 skb
->nh
.iph
->tot_len
= 0;
2331 skb
->nh
.iph
->check
= 0;
2333 ~csum_tcpudp_magic(skb
->nh
.iph
->saddr
,
2338 cmd_length
= E1000_TXD_CMD_IP
;
2339 ipcse
= skb
->h
.raw
- skb
->data
- 1;
2340 #ifdef NETIF_F_TSO_IPV6
2341 } else if(skb
->protocol
== ntohs(ETH_P_IPV6
)) {
2342 skb
->nh
.ipv6h
->payload_len
= 0;
2344 ~csum_ipv6_magic(&skb
->nh
.ipv6h
->saddr
,
2345 &skb
->nh
.ipv6h
->daddr
,
2352 ipcss
= skb
->nh
.raw
- skb
->data
;
2353 ipcso
= (void *)&(skb
->nh
.iph
->check
) - (void *)skb
->data
;
2354 tucss
= skb
->h
.raw
- skb
->data
;
2355 tucso
= (void *)&(skb
->h
.th
->check
) - (void *)skb
->data
;
2358 cmd_length
|= (E1000_TXD_CMD_DEXT
| E1000_TXD_CMD_TSE
|
2359 E1000_TXD_CMD_TCP
| (skb
->len
- (hdr_len
)));
2361 i
= tx_ring
->next_to_use
;
2362 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2364 context_desc
->lower_setup
.ip_fields
.ipcss
= ipcss
;
2365 context_desc
->lower_setup
.ip_fields
.ipcso
= ipcso
;
2366 context_desc
->lower_setup
.ip_fields
.ipcse
= cpu_to_le16(ipcse
);
2367 context_desc
->upper_setup
.tcp_fields
.tucss
= tucss
;
2368 context_desc
->upper_setup
.tcp_fields
.tucso
= tucso
;
2369 context_desc
->upper_setup
.tcp_fields
.tucse
= cpu_to_le16(tucse
);
2370 context_desc
->tcp_seg_setup
.fields
.mss
= cpu_to_le16(mss
);
2371 context_desc
->tcp_seg_setup
.fields
.hdr_len
= hdr_len
;
2372 context_desc
->cmd_and_length
= cpu_to_le32(cmd_length
);
2374 if (++i
== tx_ring
->count
) i
= 0;
2375 tx_ring
->next_to_use
= i
;
2384 static inline boolean_t
2385 e1000_tx_csum(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2386 struct sk_buff
*skb
)
2388 struct e1000_context_desc
*context_desc
;
2392 if(likely(skb
->ip_summed
== CHECKSUM_HW
)) {
2393 css
= skb
->h
.raw
- skb
->data
;
2395 i
= tx_ring
->next_to_use
;
2396 context_desc
= E1000_CONTEXT_DESC(*tx_ring
, i
);
2398 context_desc
->upper_setup
.tcp_fields
.tucss
= css
;
2399 context_desc
->upper_setup
.tcp_fields
.tucso
= css
+ skb
->csum
;
2400 context_desc
->upper_setup
.tcp_fields
.tucse
= 0;
2401 context_desc
->tcp_seg_setup
.data
= 0;
2402 context_desc
->cmd_and_length
= cpu_to_le32(E1000_TXD_CMD_DEXT
);
2404 if (unlikely(++i
== tx_ring
->count
)) i
= 0;
2405 tx_ring
->next_to_use
= i
;
2413 #define E1000_MAX_TXD_PWR 12
2414 #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2417 e1000_tx_map(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2418 struct sk_buff
*skb
, unsigned int first
, unsigned int max_per_txd
,
2419 unsigned int nr_frags
, unsigned int mss
)
2421 struct e1000_buffer
*buffer_info
;
2422 unsigned int len
= skb
->len
;
2423 unsigned int offset
= 0, size
, count
= 0, i
;
2425 len
-= skb
->data_len
;
2427 i
= tx_ring
->next_to_use
;
2430 buffer_info
= &tx_ring
->buffer_info
[i
];
2431 size
= min(len
, max_per_txd
);
2433 /* Workaround for premature desc write-backs
2434 * in TSO mode. Append 4-byte sentinel desc */
2435 if(unlikely(mss
&& !nr_frags
&& size
== len
&& size
> 8))
2438 /* work-around for errata 10 and it applies
2439 * to all controllers in PCI-X mode
2440 * The fix is to make sure that the first descriptor of a
2441 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2443 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2444 (size
> 2015) && count
== 0))
2447 /* Workaround for potential 82544 hang in PCI-X. Avoid
2448 * terminating buffers within evenly-aligned dwords. */
2449 if(unlikely(adapter
->pcix_82544
&&
2450 !((unsigned long)(skb
->data
+ offset
+ size
- 1) & 4) &&
2454 buffer_info
->length
= size
;
2456 pci_map_single(adapter
->pdev
,
2460 buffer_info
->time_stamp
= jiffies
;
2465 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2468 for(f
= 0; f
< nr_frags
; f
++) {
2469 struct skb_frag_struct
*frag
;
2471 frag
= &skb_shinfo(skb
)->frags
[f
];
2473 offset
= frag
->page_offset
;
2476 buffer_info
= &tx_ring
->buffer_info
[i
];
2477 size
= min(len
, max_per_txd
);
2479 /* Workaround for premature desc write-backs
2480 * in TSO mode. Append 4-byte sentinel desc */
2481 if(unlikely(mss
&& f
== (nr_frags
-1) && size
== len
&& size
> 8))
2484 /* Workaround for potential 82544 hang in PCI-X.
2485 * Avoid terminating buffers within evenly-aligned
2487 if(unlikely(adapter
->pcix_82544
&&
2488 !((unsigned long)(frag
->page
+offset
+size
-1) & 4) &&
2492 buffer_info
->length
= size
;
2494 pci_map_page(adapter
->pdev
,
2499 buffer_info
->time_stamp
= jiffies
;
2504 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2508 i
= (i
== 0) ? tx_ring
->count
- 1 : i
- 1;
2509 tx_ring
->buffer_info
[i
].skb
= skb
;
2510 tx_ring
->buffer_info
[first
].next_to_watch
= i
;
2516 e1000_tx_queue(struct e1000_adapter
*adapter
, struct e1000_tx_ring
*tx_ring
,
2517 int tx_flags
, int count
)
2519 struct e1000_tx_desc
*tx_desc
= NULL
;
2520 struct e1000_buffer
*buffer_info
;
2521 uint32_t txd_upper
= 0, txd_lower
= E1000_TXD_CMD_IFCS
;
2524 if(likely(tx_flags
& E1000_TX_FLAGS_TSO
)) {
2525 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
|
2527 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2529 if(likely(tx_flags
& E1000_TX_FLAGS_IPV4
))
2530 txd_upper
|= E1000_TXD_POPTS_IXSM
<< 8;
2533 if(likely(tx_flags
& E1000_TX_FLAGS_CSUM
)) {
2534 txd_lower
|= E1000_TXD_CMD_DEXT
| E1000_TXD_DTYP_D
;
2535 txd_upper
|= E1000_TXD_POPTS_TXSM
<< 8;
2538 if(unlikely(tx_flags
& E1000_TX_FLAGS_VLAN
)) {
2539 txd_lower
|= E1000_TXD_CMD_VLE
;
2540 txd_upper
|= (tx_flags
& E1000_TX_FLAGS_VLAN_MASK
);
2543 i
= tx_ring
->next_to_use
;
2546 buffer_info
= &tx_ring
->buffer_info
[i
];
2547 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
2548 tx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
2549 tx_desc
->lower
.data
=
2550 cpu_to_le32(txd_lower
| buffer_info
->length
);
2551 tx_desc
->upper
.data
= cpu_to_le32(txd_upper
);
2552 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
2555 tx_desc
->lower
.data
|= cpu_to_le32(adapter
->txd_cmd
);
2557 /* Force memory writes to complete before letting h/w
2558 * know there are new descriptors to fetch. (Only
2559 * applicable for weak-ordered memory model archs,
2560 * such as IA-64). */
2563 tx_ring
->next_to_use
= i
;
2564 writel(i
, adapter
->hw
.hw_addr
+ tx_ring
->tdt
);
2568 * 82547 workaround to avoid controller hang in half-duplex environment.
2569 * The workaround is to avoid queuing a large packet that would span
2570 * the internal Tx FIFO ring boundary by notifying the stack to resend
2571 * the packet at a later time. This gives the Tx FIFO an opportunity to
2572 * flush all packets. When that occurs, we reset the Tx FIFO pointers
2573 * to the beginning of the Tx FIFO.
2576 #define E1000_FIFO_HDR 0x10
2577 #define E1000_82547_PAD_LEN 0x3E0
2580 e1000_82547_fifo_workaround(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2582 uint32_t fifo_space
= adapter
->tx_fifo_size
- adapter
->tx_fifo_head
;
2583 uint32_t skb_fifo_len
= skb
->len
+ E1000_FIFO_HDR
;
2585 E1000_ROUNDUP(skb_fifo_len
, E1000_FIFO_HDR
);
2587 if(adapter
->link_duplex
!= HALF_DUPLEX
)
2588 goto no_fifo_stall_required
;
2590 if(atomic_read(&adapter
->tx_fifo_stall
))
2593 if(skb_fifo_len
>= (E1000_82547_PAD_LEN
+ fifo_space
)) {
2594 atomic_set(&adapter
->tx_fifo_stall
, 1);
2598 no_fifo_stall_required
:
2599 adapter
->tx_fifo_head
+= skb_fifo_len
;
2600 if(adapter
->tx_fifo_head
>= adapter
->tx_fifo_size
)
2601 adapter
->tx_fifo_head
-= adapter
->tx_fifo_size
;
2605 #define MINIMUM_DHCP_PACKET_SIZE 282
2607 e1000_transfer_dhcp_info(struct e1000_adapter
*adapter
, struct sk_buff
*skb
)
2609 struct e1000_hw
*hw
= &adapter
->hw
;
2610 uint16_t length
, offset
;
2611 if(vlan_tx_tag_present(skb
)) {
2612 if(!((vlan_tx_tag_get(skb
) == adapter
->hw
.mng_cookie
.vlan_id
) &&
2613 ( adapter
->hw
.mng_cookie
.status
&
2614 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
)) )
2617 if(htons(ETH_P_IP
) == skb
->protocol
) {
2618 const struct iphdr
*ip
= skb
->nh
.iph
;
2619 if(IPPROTO_UDP
== ip
->protocol
) {
2620 struct udphdr
*udp
= (struct udphdr
*)(skb
->h
.uh
);
2621 if(ntohs(udp
->dest
) == 67) {
2622 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2623 length
= skb
->len
- offset
;
2625 return e1000_mng_write_dhcp_info(hw
,
2626 (uint8_t *)udp
+ 8, length
);
2629 } else if((skb
->len
> MINIMUM_DHCP_PACKET_SIZE
) && (!skb
->protocol
)) {
2630 struct ethhdr
*eth
= (struct ethhdr
*) skb
->data
;
2631 if((htons(ETH_P_IP
) == eth
->h_proto
)) {
2632 const struct iphdr
*ip
=
2633 (struct iphdr
*)((uint8_t *)skb
->data
+14);
2634 if(IPPROTO_UDP
== ip
->protocol
) {
2635 struct udphdr
*udp
=
2636 (struct udphdr
*)((uint8_t *)ip
+
2638 if(ntohs(udp
->dest
) == 67) {
2639 offset
= (uint8_t *)udp
+ 8 - skb
->data
;
2640 length
= skb
->len
- offset
;
2642 return e1000_mng_write_dhcp_info(hw
,
2652 #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
2654 e1000_xmit_frame(struct sk_buff
*skb
, struct net_device
*netdev
)
2656 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2657 struct e1000_tx_ring
*tx_ring
;
2658 unsigned int first
, max_per_txd
= E1000_MAX_DATA_PER_TXD
;
2659 unsigned int max_txd_pwr
= E1000_MAX_TXD_PWR
;
2660 unsigned int tx_flags
= 0;
2661 unsigned int len
= skb
->len
;
2662 unsigned long flags
;
2663 unsigned int nr_frags
= 0;
2664 unsigned int mss
= 0;
2668 len
-= skb
->data_len
;
2670 #ifdef CONFIG_E1000_MQ
2671 tx_ring
= *per_cpu_ptr(adapter
->cpu_tx_ring
, smp_processor_id());
2673 tx_ring
= adapter
->tx_ring
;
2676 if (unlikely(skb
->len
<= 0)) {
2677 dev_kfree_skb_any(skb
);
2678 return NETDEV_TX_OK
;
2682 mss
= skb_shinfo(skb
)->tso_size
;
2683 /* The controller does a simple calculation to
2684 * make sure there is enough room in the FIFO before
2685 * initiating the DMA for each buffer. The calc is:
2686 * 4 = ceil(buffer len/mss). To make sure we don't
2687 * overrun the FIFO, adjust the max buffer len if mss
2690 max_per_txd
= min(mss
<< 2, max_per_txd
);
2691 max_txd_pwr
= fls(max_per_txd
) - 1;
2694 if((mss
) || (skb
->ip_summed
== CHECKSUM_HW
))
2698 if(skb
->ip_summed
== CHECKSUM_HW
)
2701 count
+= TXD_USE_COUNT(len
, max_txd_pwr
);
2703 if(adapter
->pcix_82544
)
2706 /* work-around for errata 10 and it applies to all controllers
2707 * in PCI-X mode, so add one more descriptor to the count
2709 if(unlikely((adapter
->hw
.bus_type
== e1000_bus_type_pcix
) &&
2713 nr_frags
= skb_shinfo(skb
)->nr_frags
;
2714 for(f
= 0; f
< nr_frags
; f
++)
2715 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
,
2717 if(adapter
->pcix_82544
)
2721 /* TSO Workaround for 82571/2 Controllers -- if skb->data
2722 * points to just header, pull a few bytes of payload from
2723 * frags into skb->data */
2724 if (skb_shinfo(skb
)->tso_size
) {
2726 hdr_len
= ((skb
->h
.raw
- skb
->data
) + (skb
->h
.th
->doff
<< 2));
2727 if (skb
->data_len
&& (hdr_len
< (skb
->len
- skb
->data_len
)) &&
2728 (adapter
->hw
.mac_type
== e1000_82571
||
2729 adapter
->hw
.mac_type
== e1000_82572
)) {
2730 unsigned int pull_size
;
2731 pull_size
= min((unsigned int)4, skb
->data_len
);
2732 if (!__pskb_pull_tail(skb
, pull_size
)) {
2733 printk(KERN_ERR
"__pskb_pull_tail failed.\n");
2734 dev_kfree_skb_any(skb
);
2741 if(adapter
->hw
.tx_pkt_filtering
&& (adapter
->hw
.mac_type
== e1000_82573
) )
2742 e1000_transfer_dhcp_info(adapter
, skb
);
2744 local_irq_save(flags
);
2745 if (!spin_trylock(&tx_ring
->tx_lock
)) {
2746 /* Collision - tell upper layer to requeue */
2747 local_irq_restore(flags
);
2748 return NETDEV_TX_LOCKED
;
2751 /* need: count + 2 desc gap to keep tail from touching
2752 * head, otherwise try next time */
2753 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < count
+ 2)) {
2754 netif_stop_queue(netdev
);
2755 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2756 return NETDEV_TX_BUSY
;
2759 if(unlikely(adapter
->hw
.mac_type
== e1000_82547
)) {
2760 if(unlikely(e1000_82547_fifo_workaround(adapter
, skb
))) {
2761 netif_stop_queue(netdev
);
2762 mod_timer(&adapter
->tx_fifo_stall_timer
, jiffies
);
2763 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2764 return NETDEV_TX_BUSY
;
2768 if(unlikely(adapter
->vlgrp
&& vlan_tx_tag_present(skb
))) {
2769 tx_flags
|= E1000_TX_FLAGS_VLAN
;
2770 tx_flags
|= (vlan_tx_tag_get(skb
) << E1000_TX_FLAGS_VLAN_SHIFT
);
2773 first
= tx_ring
->next_to_use
;
2775 tso
= e1000_tso(adapter
, tx_ring
, skb
);
2777 dev_kfree_skb_any(skb
);
2778 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2779 return NETDEV_TX_OK
;
2783 tx_flags
|= E1000_TX_FLAGS_TSO
;
2784 else if (likely(e1000_tx_csum(adapter
, tx_ring
, skb
)))
2785 tx_flags
|= E1000_TX_FLAGS_CSUM
;
2787 /* Old method was to assume IPv4 packet by default if TSO was enabled.
2788 * 82571 hardware supports TSO capabilities for IPv6 as well...
2789 * no longer assume, we must. */
2790 if (likely(skb
->protocol
== ntohs(ETH_P_IP
)))
2791 tx_flags
|= E1000_TX_FLAGS_IPV4
;
2793 e1000_tx_queue(adapter
, tx_ring
, tx_flags
,
2794 e1000_tx_map(adapter
, tx_ring
, skb
, first
,
2795 max_per_txd
, nr_frags
, mss
));
2797 netdev
->trans_start
= jiffies
;
2799 /* Make sure there is space in the ring for the next send. */
2800 if (unlikely(E1000_DESC_UNUSED(tx_ring
) < MAX_SKB_FRAGS
+ 2))
2801 netif_stop_queue(netdev
);
2803 spin_unlock_irqrestore(&tx_ring
->tx_lock
, flags
);
2804 return NETDEV_TX_OK
;
2808 * e1000_tx_timeout - Respond to a Tx Hang
2809 * @netdev: network interface device structure
2813 e1000_tx_timeout(struct net_device
*netdev
)
2815 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2817 /* Do the reset outside of interrupt context */
2818 schedule_work(&adapter
->tx_timeout_task
);
2822 e1000_tx_timeout_task(struct net_device
*netdev
)
2824 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2826 e1000_down(adapter
);
2831 * e1000_get_stats - Get System Network Statistics
2832 * @netdev: network interface device structure
2834 * Returns the address of the device statistics structure.
2835 * The statistics are actually updated from the timer callback.
2838 static struct net_device_stats
*
2839 e1000_get_stats(struct net_device
*netdev
)
2841 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2843 e1000_update_stats(adapter
);
2844 return &adapter
->net_stats
;
2848 * e1000_change_mtu - Change the Maximum Transfer Unit
2849 * @netdev: network interface device structure
2850 * @new_mtu: new value for maximum frame size
2852 * Returns 0 on success, negative on failure
2856 e1000_change_mtu(struct net_device
*netdev
, int new_mtu
)
2858 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
2859 int max_frame
= new_mtu
+ ENET_HEADER_SIZE
+ ETHERNET_FCS_SIZE
;
2861 if((max_frame
< MINIMUM_ETHERNET_FRAME_SIZE
) ||
2862 (max_frame
> MAX_JUMBO_FRAME_SIZE
)) {
2863 DPRINTK(PROBE
, ERR
, "Invalid MTU setting\n");
2867 #define MAX_STD_JUMBO_FRAME_SIZE 9234
2868 /* might want this to be bigger enum check... */
2869 /* 82571 controllers limit jumbo frame size to 10500 bytes */
2870 if ((adapter
->hw
.mac_type
== e1000_82571
||
2871 adapter
->hw
.mac_type
== e1000_82572
) &&
2872 max_frame
> MAX_STD_JUMBO_FRAME_SIZE
) {
2873 DPRINTK(PROBE
, ERR
, "MTU > 9216 bytes not supported "
2874 "on 82571 and 82572 controllers.\n");
2878 if(adapter
->hw
.mac_type
== e1000_82573
&&
2879 max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
) {
2880 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2885 if(adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
2886 adapter
->rx_buffer_len
= max_frame
;
2887 E1000_ROUNDUP(adapter
->rx_buffer_len
, 1024);
2889 if(unlikely((adapter
->hw
.mac_type
< e1000_82543
) &&
2890 (max_frame
> MAXIMUM_ETHERNET_FRAME_SIZE
))) {
2891 DPRINTK(PROBE
, ERR
, "Jumbo Frames not supported "
2896 if(max_frame
<= E1000_RXBUFFER_2048
) {
2897 adapter
->rx_buffer_len
= E1000_RXBUFFER_2048
;
2898 } else if(max_frame
<= E1000_RXBUFFER_4096
) {
2899 adapter
->rx_buffer_len
= E1000_RXBUFFER_4096
;
2900 } else if(max_frame
<= E1000_RXBUFFER_8192
) {
2901 adapter
->rx_buffer_len
= E1000_RXBUFFER_8192
;
2902 } else if(max_frame
<= E1000_RXBUFFER_16384
) {
2903 adapter
->rx_buffer_len
= E1000_RXBUFFER_16384
;
2908 netdev
->mtu
= new_mtu
;
2910 if(netif_running(netdev
)) {
2911 e1000_down(adapter
);
2915 adapter
->hw
.max_frame_size
= max_frame
;
2921 * e1000_update_stats - Update the board statistics counters
2922 * @adapter: board private structure
2926 e1000_update_stats(struct e1000_adapter
*adapter
)
2928 struct e1000_hw
*hw
= &adapter
->hw
;
2929 unsigned long flags
;
2932 #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
2934 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
2936 /* these counters are modified from e1000_adjust_tbi_stats,
2937 * called from the interrupt context, so they must only
2938 * be written while holding adapter->stats_lock
2941 adapter
->stats
.crcerrs
+= E1000_READ_REG(hw
, CRCERRS
);
2942 adapter
->stats
.gprc
+= E1000_READ_REG(hw
, GPRC
);
2943 adapter
->stats
.gorcl
+= E1000_READ_REG(hw
, GORCL
);
2944 adapter
->stats
.gorch
+= E1000_READ_REG(hw
, GORCH
);
2945 adapter
->stats
.bprc
+= E1000_READ_REG(hw
, BPRC
);
2946 adapter
->stats
.mprc
+= E1000_READ_REG(hw
, MPRC
);
2947 adapter
->stats
.roc
+= E1000_READ_REG(hw
, ROC
);
2948 adapter
->stats
.prc64
+= E1000_READ_REG(hw
, PRC64
);
2949 adapter
->stats
.prc127
+= E1000_READ_REG(hw
, PRC127
);
2950 adapter
->stats
.prc255
+= E1000_READ_REG(hw
, PRC255
);
2951 adapter
->stats
.prc511
+= E1000_READ_REG(hw
, PRC511
);
2952 adapter
->stats
.prc1023
+= E1000_READ_REG(hw
, PRC1023
);
2953 adapter
->stats
.prc1522
+= E1000_READ_REG(hw
, PRC1522
);
2955 adapter
->stats
.symerrs
+= E1000_READ_REG(hw
, SYMERRS
);
2956 adapter
->stats
.mpc
+= E1000_READ_REG(hw
, MPC
);
2957 adapter
->stats
.scc
+= E1000_READ_REG(hw
, SCC
);
2958 adapter
->stats
.ecol
+= E1000_READ_REG(hw
, ECOL
);
2959 adapter
->stats
.mcc
+= E1000_READ_REG(hw
, MCC
);
2960 adapter
->stats
.latecol
+= E1000_READ_REG(hw
, LATECOL
);
2961 adapter
->stats
.dc
+= E1000_READ_REG(hw
, DC
);
2962 adapter
->stats
.sec
+= E1000_READ_REG(hw
, SEC
);
2963 adapter
->stats
.rlec
+= E1000_READ_REG(hw
, RLEC
);
2964 adapter
->stats
.xonrxc
+= E1000_READ_REG(hw
, XONRXC
);
2965 adapter
->stats
.xontxc
+= E1000_READ_REG(hw
, XONTXC
);
2966 adapter
->stats
.xoffrxc
+= E1000_READ_REG(hw
, XOFFRXC
);
2967 adapter
->stats
.xofftxc
+= E1000_READ_REG(hw
, XOFFTXC
);
2968 adapter
->stats
.fcruc
+= E1000_READ_REG(hw
, FCRUC
);
2969 adapter
->stats
.gptc
+= E1000_READ_REG(hw
, GPTC
);
2970 adapter
->stats
.gotcl
+= E1000_READ_REG(hw
, GOTCL
);
2971 adapter
->stats
.gotch
+= E1000_READ_REG(hw
, GOTCH
);
2972 adapter
->stats
.rnbc
+= E1000_READ_REG(hw
, RNBC
);
2973 adapter
->stats
.ruc
+= E1000_READ_REG(hw
, RUC
);
2974 adapter
->stats
.rfc
+= E1000_READ_REG(hw
, RFC
);
2975 adapter
->stats
.rjc
+= E1000_READ_REG(hw
, RJC
);
2976 adapter
->stats
.torl
+= E1000_READ_REG(hw
, TORL
);
2977 adapter
->stats
.torh
+= E1000_READ_REG(hw
, TORH
);
2978 adapter
->stats
.totl
+= E1000_READ_REG(hw
, TOTL
);
2979 adapter
->stats
.toth
+= E1000_READ_REG(hw
, TOTH
);
2980 adapter
->stats
.tpr
+= E1000_READ_REG(hw
, TPR
);
2981 adapter
->stats
.ptc64
+= E1000_READ_REG(hw
, PTC64
);
2982 adapter
->stats
.ptc127
+= E1000_READ_REG(hw
, PTC127
);
2983 adapter
->stats
.ptc255
+= E1000_READ_REG(hw
, PTC255
);
2984 adapter
->stats
.ptc511
+= E1000_READ_REG(hw
, PTC511
);
2985 adapter
->stats
.ptc1023
+= E1000_READ_REG(hw
, PTC1023
);
2986 adapter
->stats
.ptc1522
+= E1000_READ_REG(hw
, PTC1522
);
2987 adapter
->stats
.mptc
+= E1000_READ_REG(hw
, MPTC
);
2988 adapter
->stats
.bptc
+= E1000_READ_REG(hw
, BPTC
);
2990 /* used for adaptive IFS */
2992 hw
->tx_packet_delta
= E1000_READ_REG(hw
, TPT
);
2993 adapter
->stats
.tpt
+= hw
->tx_packet_delta
;
2994 hw
->collision_delta
= E1000_READ_REG(hw
, COLC
);
2995 adapter
->stats
.colc
+= hw
->collision_delta
;
2997 if(hw
->mac_type
>= e1000_82543
) {
2998 adapter
->stats
.algnerrc
+= E1000_READ_REG(hw
, ALGNERRC
);
2999 adapter
->stats
.rxerrc
+= E1000_READ_REG(hw
, RXERRC
);
3000 adapter
->stats
.tncrs
+= E1000_READ_REG(hw
, TNCRS
);
3001 adapter
->stats
.cexterr
+= E1000_READ_REG(hw
, CEXTERR
);
3002 adapter
->stats
.tsctc
+= E1000_READ_REG(hw
, TSCTC
);
3003 adapter
->stats
.tsctfc
+= E1000_READ_REG(hw
, TSCTFC
);
3005 if(hw
->mac_type
> e1000_82547_rev_2
) {
3006 adapter
->stats
.iac
+= E1000_READ_REG(hw
, IAC
);
3007 adapter
->stats
.icrxoc
+= E1000_READ_REG(hw
, ICRXOC
);
3008 adapter
->stats
.icrxptc
+= E1000_READ_REG(hw
, ICRXPTC
);
3009 adapter
->stats
.icrxatc
+= E1000_READ_REG(hw
, ICRXATC
);
3010 adapter
->stats
.ictxptc
+= E1000_READ_REG(hw
, ICTXPTC
);
3011 adapter
->stats
.ictxatc
+= E1000_READ_REG(hw
, ICTXATC
);
3012 adapter
->stats
.ictxqec
+= E1000_READ_REG(hw
, ICTXQEC
);
3013 adapter
->stats
.ictxqmtc
+= E1000_READ_REG(hw
, ICTXQMTC
);
3014 adapter
->stats
.icrxdmtc
+= E1000_READ_REG(hw
, ICRXDMTC
);
3017 /* Fill out the OS statistics structure */
3019 adapter
->net_stats
.rx_packets
= adapter
->stats
.gprc
;
3020 adapter
->net_stats
.tx_packets
= adapter
->stats
.gptc
;
3021 adapter
->net_stats
.rx_bytes
= adapter
->stats
.gorcl
;
3022 adapter
->net_stats
.tx_bytes
= adapter
->stats
.gotcl
;
3023 adapter
->net_stats
.multicast
= adapter
->stats
.mprc
;
3024 adapter
->net_stats
.collisions
= adapter
->stats
.colc
;
3028 adapter
->net_stats
.rx_errors
= adapter
->stats
.rxerrc
+
3029 adapter
->stats
.crcerrs
+ adapter
->stats
.algnerrc
+
3030 adapter
->stats
.rlec
+ adapter
->stats
.mpc
+
3031 adapter
->stats
.cexterr
;
3032 adapter
->net_stats
.rx_length_errors
= adapter
->stats
.rlec
;
3033 adapter
->net_stats
.rx_crc_errors
= adapter
->stats
.crcerrs
;
3034 adapter
->net_stats
.rx_frame_errors
= adapter
->stats
.algnerrc
;
3035 adapter
->net_stats
.rx_fifo_errors
= adapter
->stats
.mpc
;
3036 adapter
->net_stats
.rx_missed_errors
= adapter
->stats
.mpc
;
3040 adapter
->net_stats
.tx_errors
= adapter
->stats
.ecol
+
3041 adapter
->stats
.latecol
;
3042 adapter
->net_stats
.tx_aborted_errors
= adapter
->stats
.ecol
;
3043 adapter
->net_stats
.tx_window_errors
= adapter
->stats
.latecol
;
3044 adapter
->net_stats
.tx_carrier_errors
= adapter
->stats
.tncrs
;
3046 /* Tx Dropped needs to be maintained elsewhere */
3050 if(hw
->media_type
== e1000_media_type_copper
) {
3051 if((adapter
->link_speed
== SPEED_1000
) &&
3052 (!e1000_read_phy_reg(hw
, PHY_1000T_STATUS
, &phy_tmp
))) {
3053 phy_tmp
&= PHY_IDLE_ERROR_COUNT_MASK
;
3054 adapter
->phy_stats
.idle_errors
+= phy_tmp
;
3057 if((hw
->mac_type
<= e1000_82546
) &&
3058 (hw
->phy_type
== e1000_phy_m88
) &&
3059 !e1000_read_phy_reg(hw
, M88E1000_RX_ERR_CNTR
, &phy_tmp
))
3060 adapter
->phy_stats
.receive_errors
+= phy_tmp
;
3063 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3066 #ifdef CONFIG_E1000_MQ
3068 e1000_rx_schedule(void *data
)
3070 struct net_device
*poll_dev
, *netdev
= data
;
3071 struct e1000_adapter
*adapter
= netdev
->priv
;
3072 int this_cpu
= get_cpu();
3074 poll_dev
= *per_cpu_ptr(adapter
->cpu_netdev
, this_cpu
);
3075 if (poll_dev
== NULL
) {
3080 if (likely(netif_rx_schedule_prep(poll_dev
)))
3081 __netif_rx_schedule(poll_dev
);
3083 e1000_irq_enable(adapter
);
3090 * e1000_intr - Interrupt Handler
3091 * @irq: interrupt number
3092 * @data: pointer to a network interface device structure
3093 * @pt_regs: CPU registers structure
3097 e1000_intr(int irq
, void *data
, struct pt_regs
*regs
)
3099 struct net_device
*netdev
= data
;
3100 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3101 struct e1000_hw
*hw
= &adapter
->hw
;
3102 uint32_t icr
= E1000_READ_REG(hw
, ICR
);
3103 #ifdef CONFIG_E1000_MQ
3108 return IRQ_NONE
; /* Not our interrupt */
3110 if(unlikely(icr
& (E1000_ICR_RXSEQ
| E1000_ICR_LSC
))) {
3111 hw
->get_link_status
= 1;
3112 mod_timer(&adapter
->watchdog_timer
, jiffies
);
3115 #ifdef CONFIG_E1000_NAPI
3116 atomic_inc(&adapter
->irq_sem
);
3117 E1000_WRITE_REG(hw
, IMC
, ~0);
3118 E1000_WRITE_FLUSH(hw
);
3119 #ifdef CONFIG_E1000_MQ
3120 if (atomic_read(&adapter
->rx_sched_call_data
.count
) == 0) {
3121 cpu_set(adapter
->cpu_for_queue
[0],
3122 adapter
->rx_sched_call_data
.cpumask
);
3123 for (i
= 1; i
< adapter
->num_queues
; i
++) {
3124 cpu_set(adapter
->cpu_for_queue
[i
],
3125 adapter
->rx_sched_call_data
.cpumask
);
3126 atomic_inc(&adapter
->irq_sem
);
3128 atomic_set(&adapter
->rx_sched_call_data
.count
, i
);
3129 smp_call_async_mask(&adapter
->rx_sched_call_data
);
3131 printk("call_data.count == %u\n", atomic_read(&adapter
->rx_sched_call_data
.count
));
3133 #else /* if !CONFIG_E1000_MQ */
3134 if (likely(netif_rx_schedule_prep(&adapter
->polling_netdev
[0])))
3135 __netif_rx_schedule(&adapter
->polling_netdev
[0]);
3137 e1000_irq_enable(adapter
);
3138 #endif /* CONFIG_E1000_MQ */
3140 #else /* if !CONFIG_E1000_NAPI */
3141 /* Writing IMC and IMS is needed for 82547.
3142 Due to Hub Link bus being occupied, an interrupt
3143 de-assertion message is not able to be sent.
3144 When an interrupt assertion message is generated later,
3145 two messages are re-ordered and sent out.
3146 That causes APIC to think 82547 is in de-assertion
3147 state, while 82547 is in assertion state, resulting
3148 in dead lock. Writing IMC forces 82547 into
3151 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
){
3152 atomic_inc(&adapter
->irq_sem
);
3153 E1000_WRITE_REG(hw
, IMC
, ~0);
3156 for(i
= 0; i
< E1000_MAX_INTR
; i
++)
3157 if(unlikely(!adapter
->clean_rx(adapter
, adapter
->rx_ring
) &
3158 !e1000_clean_tx_irq(adapter
, adapter
->tx_ring
)))
3161 if(hw
->mac_type
== e1000_82547
|| hw
->mac_type
== e1000_82547_rev_2
)
3162 e1000_irq_enable(adapter
);
3164 #endif /* CONFIG_E1000_NAPI */
3169 #ifdef CONFIG_E1000_NAPI
3171 * e1000_clean - NAPI Rx polling callback
3172 * @adapter: board private structure
3176 e1000_clean(struct net_device
*poll_dev
, int *budget
)
3178 struct e1000_adapter
*adapter
;
3179 int work_to_do
= min(*budget
, poll_dev
->quota
);
3180 int tx_cleaned
, i
= 0, work_done
= 0;
3182 /* Must NOT use netdev_priv macro here. */
3183 adapter
= poll_dev
->priv
;
3185 /* Keep link state information with original netdev */
3186 if (!netif_carrier_ok(adapter
->netdev
))
3189 while (poll_dev
!= &adapter
->polling_netdev
[i
]) {
3191 if (unlikely(i
== adapter
->num_queues
))
3195 tx_cleaned
= e1000_clean_tx_irq(adapter
, &adapter
->tx_ring
[i
]);
3196 adapter
->clean_rx(adapter
, &adapter
->rx_ring
[i
],
3197 &work_done
, work_to_do
);
3199 *budget
-= work_done
;
3200 poll_dev
->quota
-= work_done
;
3202 /* If no Tx and not enough Rx work done, exit the polling mode */
3203 if((!tx_cleaned
&& (work_done
== 0)) ||
3204 !netif_running(adapter
->netdev
)) {
3206 netif_rx_complete(poll_dev
);
3207 e1000_irq_enable(adapter
);
3216 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3217 * @adapter: board private structure
3221 e1000_clean_tx_irq(struct e1000_adapter
*adapter
,
3222 struct e1000_tx_ring
*tx_ring
)
3224 struct net_device
*netdev
= adapter
->netdev
;
3225 struct e1000_tx_desc
*tx_desc
, *eop_desc
;
3226 struct e1000_buffer
*buffer_info
;
3227 unsigned int i
, eop
;
3228 boolean_t cleaned
= FALSE
;
3230 i
= tx_ring
->next_to_clean
;
3231 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3232 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3234 while (eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) {
3235 /* Premature writeback of Tx descriptors clear (free buffers
3236 * and unmap pci_mapping) previous_buffer_info */
3237 if (likely(tx_ring
->previous_buffer_info
.skb
!= NULL
)) {
3238 e1000_unmap_and_free_tx_resource(adapter
,
3239 &tx_ring
->previous_buffer_info
);
3242 for(cleaned
= FALSE
; !cleaned
; ) {
3243 tx_desc
= E1000_TX_DESC(*tx_ring
, i
);
3244 buffer_info
= &tx_ring
->buffer_info
[i
];
3245 cleaned
= (i
== eop
);
3248 if (!(netdev
->features
& NETIF_F_TSO
)) {
3250 e1000_unmap_and_free_tx_resource(adapter
,
3255 memcpy(&tx_ring
->previous_buffer_info
,
3257 sizeof(struct e1000_buffer
));
3258 memset(buffer_info
, 0,
3259 sizeof(struct e1000_buffer
));
3261 e1000_unmap_and_free_tx_resource(
3262 adapter
, buffer_info
);
3267 tx_desc
->buffer_addr
= 0;
3268 tx_desc
->lower
.data
= 0;
3269 tx_desc
->upper
.data
= 0;
3271 if(unlikely(++i
== tx_ring
->count
)) i
= 0;
3276 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3277 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3280 tx_ring
->next_to_clean
= i
;
3282 spin_lock(&tx_ring
->tx_lock
);
3284 if(unlikely(cleaned
&& netif_queue_stopped(netdev
) &&
3285 netif_carrier_ok(netdev
)))
3286 netif_wake_queue(netdev
);
3288 spin_unlock(&tx_ring
->tx_lock
);
3290 if (adapter
->detect_tx_hung
) {
3291 /* Detect a transmit hang in hardware, this serializes the
3292 * check with the clearing of time_stamp and movement of i */
3293 adapter
->detect_tx_hung
= FALSE
;
3294 if (tx_ring
->buffer_info
[i
].dma
&&
3295 time_after(jiffies
, tx_ring
->buffer_info
[i
].time_stamp
+ HZ
)
3296 && !(E1000_READ_REG(&adapter
->hw
, STATUS
) &
3297 E1000_STATUS_TXOFF
)) {
3299 /* detected Tx unit hang */
3300 i
= tx_ring
->next_to_clean
;
3301 eop
= tx_ring
->buffer_info
[i
].next_to_watch
;
3302 eop_desc
= E1000_TX_DESC(*tx_ring
, eop
);
3303 DPRINTK(DRV
, ERR
, "Detected Tx Unit Hang\n"
3306 " next_to_use <%x>\n"
3307 " next_to_clean <%x>\n"
3308 "buffer_info[next_to_clean]\n"
3310 " time_stamp <%lx>\n"
3311 " next_to_watch <%x>\n"
3313 " next_to_watch.status <%x>\n",
3314 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdh
),
3315 readl(adapter
->hw
.hw_addr
+ tx_ring
->tdt
),
3316 tx_ring
->next_to_use
,
3318 (unsigned long long)tx_ring
->buffer_info
[i
].dma
,
3319 tx_ring
->buffer_info
[i
].time_stamp
,
3322 eop_desc
->upper
.fields
.status
);
3323 netif_stop_queue(netdev
);
3327 if (unlikely(!(eop_desc
->upper
.data
& cpu_to_le32(E1000_TXD_STAT_DD
)) &&
3328 time_after(jiffies
, tx_ring
->previous_buffer_info
.time_stamp
+ HZ
)))
3329 e1000_unmap_and_free_tx_resource(
3330 adapter
, &tx_ring
->previous_buffer_info
);
3336 * e1000_rx_checksum - Receive Checksum Offload for 82543
3337 * @adapter: board private structure
3338 * @status_err: receive descriptor status and error fields
3339 * @csum: receive descriptor csum field
3340 * @sk_buff: socket buffer with received data
3344 e1000_rx_checksum(struct e1000_adapter
*adapter
,
3345 uint32_t status_err
, uint32_t csum
,
3346 struct sk_buff
*skb
)
3348 uint16_t status
= (uint16_t)status_err
;
3349 uint8_t errors
= (uint8_t)(status_err
>> 24);
3350 skb
->ip_summed
= CHECKSUM_NONE
;
3352 /* 82543 or newer only */
3353 if(unlikely(adapter
->hw
.mac_type
< e1000_82543
)) return;
3354 /* Ignore Checksum bit is set */
3355 if(unlikely(status
& E1000_RXD_STAT_IXSM
)) return;
3356 /* TCP/UDP checksum error bit is set */
3357 if(unlikely(errors
& E1000_RXD_ERR_TCPE
)) {
3358 /* let the stack verify checksum errors */
3359 adapter
->hw_csum_err
++;
3362 /* TCP/UDP Checksum has not been calculated */
3363 if(adapter
->hw
.mac_type
<= e1000_82547_rev_2
) {
3364 if(!(status
& E1000_RXD_STAT_TCPCS
))
3367 if(!(status
& (E1000_RXD_STAT_TCPCS
| E1000_RXD_STAT_UDPCS
)))
3370 /* It must be a TCP or UDP packet with a valid checksum */
3371 if (likely(status
& E1000_RXD_STAT_TCPCS
)) {
3372 /* TCP checksum is good */
3373 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
3374 } else if (adapter
->hw
.mac_type
> e1000_82547_rev_2
) {
3375 /* IP fragment with UDP payload */
3376 /* Hardware complements the payload checksum, so we undo it
3377 * and then put the value in host order for further stack use.
3379 csum
= ntohl(csum
^ 0xFFFF);
3381 skb
->ip_summed
= CHECKSUM_HW
;
3383 adapter
->hw_csum_good
++;
3387 * e1000_clean_rx_irq - Send received data up the network stack; legacy
3388 * @adapter: board private structure
3392 #ifdef CONFIG_E1000_NAPI
3393 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3394 struct e1000_rx_ring
*rx_ring
,
3395 int *work_done
, int work_to_do
)
3397 e1000_clean_rx_irq(struct e1000_adapter
*adapter
,
3398 struct e1000_rx_ring
*rx_ring
)
3401 struct net_device
*netdev
= adapter
->netdev
;
3402 struct pci_dev
*pdev
= adapter
->pdev
;
3403 struct e1000_rx_desc
*rx_desc
;
3404 struct e1000_buffer
*buffer_info
;
3405 struct sk_buff
*skb
;
3406 unsigned long flags
;
3410 boolean_t cleaned
= FALSE
;
3412 i
= rx_ring
->next_to_clean
;
3413 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3415 while(rx_desc
->status
& E1000_RXD_STAT_DD
) {
3416 buffer_info
= &rx_ring
->buffer_info
[i
];
3417 #ifdef CONFIG_E1000_NAPI
3418 if(*work_done
>= work_to_do
)
3424 pci_unmap_single(pdev
,
3426 buffer_info
->length
,
3427 PCI_DMA_FROMDEVICE
);
3429 skb
= buffer_info
->skb
;
3430 length
= le16_to_cpu(rx_desc
->length
);
3432 if(unlikely(!(rx_desc
->status
& E1000_RXD_STAT_EOP
))) {
3433 /* All receives must fit into a single buffer */
3434 E1000_DBG("%s: Receive packet consumed multiple"
3435 " buffers\n", netdev
->name
);
3436 dev_kfree_skb_irq(skb
);
3440 if(unlikely(rx_desc
->errors
& E1000_RXD_ERR_FRAME_ERR_MASK
)) {
3441 last_byte
= *(skb
->data
+ length
- 1);
3442 if(TBI_ACCEPT(&adapter
->hw
, rx_desc
->status
,
3443 rx_desc
->errors
, length
, last_byte
)) {
3444 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3445 e1000_tbi_adjust_stats(&adapter
->hw
,
3448 spin_unlock_irqrestore(&adapter
->stats_lock
,
3452 dev_kfree_skb_irq(skb
);
3458 skb_put(skb
, length
- ETHERNET_FCS_SIZE
);
3460 /* Receive Checksum Offload */
3461 e1000_rx_checksum(adapter
,
3462 (uint32_t)(rx_desc
->status
) |
3463 ((uint32_t)(rx_desc
->errors
) << 24),
3464 rx_desc
->csum
, skb
);
3465 skb
->protocol
= eth_type_trans(skb
, netdev
);
3466 #ifdef CONFIG_E1000_NAPI
3467 if(unlikely(adapter
->vlgrp
&&
3468 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3469 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3470 le16_to_cpu(rx_desc
->special
) &
3471 E1000_RXD_SPC_VLAN_MASK
);
3473 netif_receive_skb(skb
);
3475 #else /* CONFIG_E1000_NAPI */
3476 if(unlikely(adapter
->vlgrp
&&
3477 (rx_desc
->status
& E1000_RXD_STAT_VP
))) {
3478 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3479 le16_to_cpu(rx_desc
->special
) &
3480 E1000_RXD_SPC_VLAN_MASK
);
3484 #endif /* CONFIG_E1000_NAPI */
3485 netdev
->last_rx
= jiffies
;
3489 rx_desc
->status
= 0;
3490 buffer_info
->skb
= NULL
;
3491 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3493 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3495 rx_ring
->next_to_clean
= i
;
3496 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3502 * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
3503 * @adapter: board private structure
3507 #ifdef CONFIG_E1000_NAPI
3508 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3509 struct e1000_rx_ring
*rx_ring
,
3510 int *work_done
, int work_to_do
)
3512 e1000_clean_rx_irq_ps(struct e1000_adapter
*adapter
,
3513 struct e1000_rx_ring
*rx_ring
)
3516 union e1000_rx_desc_packet_split
*rx_desc
;
3517 struct net_device
*netdev
= adapter
->netdev
;
3518 struct pci_dev
*pdev
= adapter
->pdev
;
3519 struct e1000_buffer
*buffer_info
;
3520 struct e1000_ps_page
*ps_page
;
3521 struct e1000_ps_page_dma
*ps_page_dma
;
3522 struct sk_buff
*skb
;
3524 uint32_t length
, staterr
;
3525 boolean_t cleaned
= FALSE
;
3527 i
= rx_ring
->next_to_clean
;
3528 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3529 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3531 while(staterr
& E1000_RXD_STAT_DD
) {
3532 buffer_info
= &rx_ring
->buffer_info
[i
];
3533 ps_page
= &rx_ring
->ps_page
[i
];
3534 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3535 #ifdef CONFIG_E1000_NAPI
3536 if(unlikely(*work_done
>= work_to_do
))
3541 pci_unmap_single(pdev
, buffer_info
->dma
,
3542 buffer_info
->length
,
3543 PCI_DMA_FROMDEVICE
);
3545 skb
= buffer_info
->skb
;
3547 if(unlikely(!(staterr
& E1000_RXD_STAT_EOP
))) {
3548 E1000_DBG("%s: Packet Split buffers didn't pick up"
3549 " the full packet\n", netdev
->name
);
3550 dev_kfree_skb_irq(skb
);
3554 if(unlikely(staterr
& E1000_RXDEXT_ERR_FRAME_ERR_MASK
)) {
3555 dev_kfree_skb_irq(skb
);
3559 length
= le16_to_cpu(rx_desc
->wb
.middle
.length0
);
3561 if(unlikely(!length
)) {
3562 E1000_DBG("%s: Last part of the packet spanning"
3563 " multiple descriptors\n", netdev
->name
);
3564 dev_kfree_skb_irq(skb
);
3569 skb_put(skb
, length
);
3571 for(j
= 0; j
< adapter
->rx_ps_pages
; j
++) {
3572 if(!(length
= le16_to_cpu(rx_desc
->wb
.upper
.length
[j
])))
3575 pci_unmap_page(pdev
, ps_page_dma
->ps_page_dma
[j
],
3576 PAGE_SIZE
, PCI_DMA_FROMDEVICE
);
3577 ps_page_dma
->ps_page_dma
[j
] = 0;
3578 skb_shinfo(skb
)->frags
[j
].page
=
3579 ps_page
->ps_page
[j
];
3580 ps_page
->ps_page
[j
] = NULL
;
3581 skb_shinfo(skb
)->frags
[j
].page_offset
= 0;
3582 skb_shinfo(skb
)->frags
[j
].size
= length
;
3583 skb_shinfo(skb
)->nr_frags
++;
3585 skb
->data_len
+= length
;
3588 e1000_rx_checksum(adapter
, staterr
,
3589 rx_desc
->wb
.lower
.hi_dword
.csum_ip
.csum
, skb
);
3590 skb
->protocol
= eth_type_trans(skb
, netdev
);
3592 if(likely(rx_desc
->wb
.upper
.header_status
&
3593 E1000_RXDPS_HDRSTAT_HDRSP
)) {
3594 adapter
->rx_hdr_split
++;
3595 #ifdef HAVE_RX_ZERO_COPY
3596 skb_shinfo(skb
)->zero_copy
= TRUE
;
3599 #ifdef CONFIG_E1000_NAPI
3600 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3601 vlan_hwaccel_receive_skb(skb
, adapter
->vlgrp
,
3602 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3603 E1000_RXD_SPC_VLAN_MASK
);
3605 netif_receive_skb(skb
);
3607 #else /* CONFIG_E1000_NAPI */
3608 if(unlikely(adapter
->vlgrp
&& (staterr
& E1000_RXD_STAT_VP
))) {
3609 vlan_hwaccel_rx(skb
, adapter
->vlgrp
,
3610 le16_to_cpu(rx_desc
->wb
.middle
.vlan
) &
3611 E1000_RXD_SPC_VLAN_MASK
);
3615 #endif /* CONFIG_E1000_NAPI */
3616 netdev
->last_rx
= jiffies
;
3620 rx_desc
->wb
.middle
.status_error
&= ~0xFF;
3621 buffer_info
->skb
= NULL
;
3622 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3624 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3625 staterr
= le32_to_cpu(rx_desc
->wb
.middle
.status_error
);
3627 rx_ring
->next_to_clean
= i
;
3628 adapter
->alloc_rx_buf(adapter
, rx_ring
);
3634 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
3635 * @adapter: address of board private structure
3639 e1000_alloc_rx_buffers(struct e1000_adapter
*adapter
,
3640 struct e1000_rx_ring
*rx_ring
)
3642 struct net_device
*netdev
= adapter
->netdev
;
3643 struct pci_dev
*pdev
= adapter
->pdev
;
3644 struct e1000_rx_desc
*rx_desc
;
3645 struct e1000_buffer
*buffer_info
;
3646 struct sk_buff
*skb
;
3648 unsigned int bufsz
= adapter
->rx_buffer_len
+ NET_IP_ALIGN
;
3650 i
= rx_ring
->next_to_use
;
3651 buffer_info
= &rx_ring
->buffer_info
[i
];
3653 while(!buffer_info
->skb
) {
3654 skb
= dev_alloc_skb(bufsz
);
3656 if(unlikely(!skb
)) {
3657 /* Better luck next round */
3661 /* Fix for errata 23, can't cross 64kB boundary */
3662 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3663 struct sk_buff
*oldskb
= skb
;
3664 DPRINTK(RX_ERR
, ERR
, "skb align check failed: %u bytes "
3665 "at %p\n", bufsz
, skb
->data
);
3666 /* Try again, without freeing the previous */
3667 skb
= dev_alloc_skb(bufsz
);
3668 /* Failed allocation, critical failure */
3670 dev_kfree_skb(oldskb
);
3674 if (!e1000_check_64k_bound(adapter
, skb
->data
, bufsz
)) {
3677 dev_kfree_skb(oldskb
);
3678 break; /* while !buffer_info->skb */
3680 /* Use new allocation */
3681 dev_kfree_skb(oldskb
);
3684 /* Make buffer alignment 2 beyond a 16 byte boundary
3685 * this will result in a 16 byte aligned IP header after
3686 * the 14 byte MAC header is removed
3688 skb_reserve(skb
, NET_IP_ALIGN
);
3692 buffer_info
->skb
= skb
;
3693 buffer_info
->length
= adapter
->rx_buffer_len
;
3694 buffer_info
->dma
= pci_map_single(pdev
,
3696 adapter
->rx_buffer_len
,
3697 PCI_DMA_FROMDEVICE
);
3699 /* Fix for errata 23, can't cross 64kB boundary */
3700 if (!e1000_check_64k_bound(adapter
,
3701 (void *)(unsigned long)buffer_info
->dma
,
3702 adapter
->rx_buffer_len
)) {
3703 DPRINTK(RX_ERR
, ERR
,
3704 "dma align check failed: %u bytes at %p\n",
3705 adapter
->rx_buffer_len
,
3706 (void *)(unsigned long)buffer_info
->dma
);
3708 buffer_info
->skb
= NULL
;
3710 pci_unmap_single(pdev
, buffer_info
->dma
,
3711 adapter
->rx_buffer_len
,
3712 PCI_DMA_FROMDEVICE
);
3714 break; /* while !buffer_info->skb */
3716 rx_desc
= E1000_RX_DESC(*rx_ring
, i
);
3717 rx_desc
->buffer_addr
= cpu_to_le64(buffer_info
->dma
);
3719 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3720 /* Force memory writes to complete before letting h/w
3721 * know there are new descriptors to fetch. (Only
3722 * applicable for weak-ordered memory model archs,
3723 * such as IA-64). */
3725 writel(i
, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3728 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3729 buffer_info
= &rx_ring
->buffer_info
[i
];
3732 rx_ring
->next_to_use
= i
;
3736 * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
3737 * @adapter: address of board private structure
3741 e1000_alloc_rx_buffers_ps(struct e1000_adapter
*adapter
,
3742 struct e1000_rx_ring
*rx_ring
)
3744 struct net_device
*netdev
= adapter
->netdev
;
3745 struct pci_dev
*pdev
= adapter
->pdev
;
3746 union e1000_rx_desc_packet_split
*rx_desc
;
3747 struct e1000_buffer
*buffer_info
;
3748 struct e1000_ps_page
*ps_page
;
3749 struct e1000_ps_page_dma
*ps_page_dma
;
3750 struct sk_buff
*skb
;
3753 i
= rx_ring
->next_to_use
;
3754 buffer_info
= &rx_ring
->buffer_info
[i
];
3755 ps_page
= &rx_ring
->ps_page
[i
];
3756 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3758 while(!buffer_info
->skb
) {
3759 rx_desc
= E1000_RX_DESC_PS(*rx_ring
, i
);
3761 for(j
= 0; j
< PS_PAGE_BUFFERS
; j
++) {
3762 if (j
< adapter
->rx_ps_pages
) {
3763 if (likely(!ps_page
->ps_page
[j
])) {
3764 ps_page
->ps_page
[j
] =
3765 alloc_page(GFP_ATOMIC
);
3766 if (unlikely(!ps_page
->ps_page
[j
]))
3768 ps_page_dma
->ps_page_dma
[j
] =
3770 ps_page
->ps_page
[j
],
3772 PCI_DMA_FROMDEVICE
);
3774 /* Refresh the desc even if buffer_addrs didn't
3775 * change because each write-back erases
3778 rx_desc
->read
.buffer_addr
[j
+1] =
3779 cpu_to_le64(ps_page_dma
->ps_page_dma
[j
]);
3781 rx_desc
->read
.buffer_addr
[j
+1] = ~0;
3784 skb
= dev_alloc_skb(adapter
->rx_ps_bsize0
+ NET_IP_ALIGN
);
3789 /* Make buffer alignment 2 beyond a 16 byte boundary
3790 * this will result in a 16 byte aligned IP header after
3791 * the 14 byte MAC header is removed
3793 skb_reserve(skb
, NET_IP_ALIGN
);
3797 buffer_info
->skb
= skb
;
3798 buffer_info
->length
= adapter
->rx_ps_bsize0
;
3799 buffer_info
->dma
= pci_map_single(pdev
, skb
->data
,
3800 adapter
->rx_ps_bsize0
,
3801 PCI_DMA_FROMDEVICE
);
3803 rx_desc
->read
.buffer_addr
[0] = cpu_to_le64(buffer_info
->dma
);
3805 if(unlikely((i
& ~(E1000_RX_BUFFER_WRITE
- 1)) == i
)) {
3806 /* Force memory writes to complete before letting h/w
3807 * know there are new descriptors to fetch. (Only
3808 * applicable for weak-ordered memory model archs,
3809 * such as IA-64). */
3811 /* Hardware increments by 16 bytes, but packet split
3812 * descriptors are 32 bytes...so we increment tail
3815 writel(i
<<1, adapter
->hw
.hw_addr
+ rx_ring
->rdt
);
3818 if(unlikely(++i
== rx_ring
->count
)) i
= 0;
3819 buffer_info
= &rx_ring
->buffer_info
[i
];
3820 ps_page
= &rx_ring
->ps_page
[i
];
3821 ps_page_dma
= &rx_ring
->ps_page_dma
[i
];
3825 rx_ring
->next_to_use
= i
;
3829 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
3834 e1000_smartspeed(struct e1000_adapter
*adapter
)
3836 uint16_t phy_status
;
3839 if((adapter
->hw
.phy_type
!= e1000_phy_igp
) || !adapter
->hw
.autoneg
||
3840 !(adapter
->hw
.autoneg_advertised
& ADVERTISE_1000_FULL
))
3843 if(adapter
->smartspeed
== 0) {
3844 /* If Master/Slave config fault is asserted twice,
3845 * we assume back-to-back */
3846 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3847 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3848 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_STATUS
, &phy_status
);
3849 if(!(phy_status
& SR_1000T_MS_CONFIG_FAULT
)) return;
3850 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3851 if(phy_ctrl
& CR_1000T_MS_ENABLE
) {
3852 phy_ctrl
&= ~CR_1000T_MS_ENABLE
;
3853 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
,
3855 adapter
->smartspeed
++;
3856 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3857 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
,
3859 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3860 MII_CR_RESTART_AUTO_NEG
);
3861 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
,
3866 } else if(adapter
->smartspeed
== E1000_SMARTSPEED_DOWNSHIFT
) {
3867 /* If still no link, perhaps using 2/3 pair cable */
3868 e1000_read_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, &phy_ctrl
);
3869 phy_ctrl
|= CR_1000T_MS_ENABLE
;
3870 e1000_write_phy_reg(&adapter
->hw
, PHY_1000T_CTRL
, phy_ctrl
);
3871 if(!e1000_phy_setup_autoneg(&adapter
->hw
) &&
3872 !e1000_read_phy_reg(&adapter
->hw
, PHY_CTRL
, &phy_ctrl
)) {
3873 phy_ctrl
|= (MII_CR_AUTO_NEG_EN
|
3874 MII_CR_RESTART_AUTO_NEG
);
3875 e1000_write_phy_reg(&adapter
->hw
, PHY_CTRL
, phy_ctrl
);
3878 /* Restart process after E1000_SMARTSPEED_MAX iterations */
3879 if(adapter
->smartspeed
++ == E1000_SMARTSPEED_MAX
)
3880 adapter
->smartspeed
= 0;
3891 e1000_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3897 return e1000_mii_ioctl(netdev
, ifr
, cmd
);
3911 e1000_mii_ioctl(struct net_device
*netdev
, struct ifreq
*ifr
, int cmd
)
3913 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
3914 struct mii_ioctl_data
*data
= if_mii(ifr
);
3918 unsigned long flags
;
3920 if(adapter
->hw
.media_type
!= e1000_media_type_copper
)
3925 data
->phy_id
= adapter
->hw
.phy_addr
;
3928 if(!capable(CAP_NET_ADMIN
))
3930 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3931 if(e1000_read_phy_reg(&adapter
->hw
, data
->reg_num
& 0x1F,
3933 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3936 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3939 if(!capable(CAP_NET_ADMIN
))
3941 if(data
->reg_num
& ~(0x1F))
3943 mii_reg
= data
->val_in
;
3944 spin_lock_irqsave(&adapter
->stats_lock
, flags
);
3945 if(e1000_write_phy_reg(&adapter
->hw
, data
->reg_num
,
3947 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
3950 if(adapter
->hw
.phy_type
== e1000_phy_m88
) {
3951 switch (data
->reg_num
) {
3953 if(mii_reg
& MII_CR_POWER_DOWN
)
3955 if(mii_reg
& MII_CR_AUTO_NEG_EN
) {
3956 adapter
->hw
.autoneg
= 1;
3957 adapter
->hw
.autoneg_advertised
= 0x2F;
3960 spddplx
= SPEED_1000
;
3961 else if (mii_reg
& 0x2000)
3962 spddplx
= SPEED_100
;
3965 spddplx
+= (mii_reg
& 0x100)
3968 retval
= e1000_set_spd_dplx(adapter
,
3971 spin_unlock_irqrestore(
3972 &adapter
->stats_lock
,
3977 if(netif_running(adapter
->netdev
)) {
3978 e1000_down(adapter
);
3981 e1000_reset(adapter
);
3983 case M88E1000_PHY_SPEC_CTRL
:
3984 case M88E1000_EXT_PHY_SPEC_CTRL
:
3985 if(e1000_phy_reset(&adapter
->hw
)) {
3986 spin_unlock_irqrestore(
3987 &adapter
->stats_lock
, flags
);
3993 switch (data
->reg_num
) {
3995 if(mii_reg
& MII_CR_POWER_DOWN
)
3997 if(netif_running(adapter
->netdev
)) {
3998 e1000_down(adapter
);
4001 e1000_reset(adapter
);
4005 spin_unlock_irqrestore(&adapter
->stats_lock
, flags
);
4010 return E1000_SUCCESS
;
4014 e1000_pci_set_mwi(struct e1000_hw
*hw
)
4016 struct e1000_adapter
*adapter
= hw
->back
;
4017 int ret_val
= pci_set_mwi(adapter
->pdev
);
4020 DPRINTK(PROBE
, ERR
, "Error in setting MWI\n");
4024 e1000_pci_clear_mwi(struct e1000_hw
*hw
)
4026 struct e1000_adapter
*adapter
= hw
->back
;
4028 pci_clear_mwi(adapter
->pdev
);
4032 e1000_read_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4034 struct e1000_adapter
*adapter
= hw
->back
;
4036 pci_read_config_word(adapter
->pdev
, reg
, value
);
4040 e1000_write_pci_cfg(struct e1000_hw
*hw
, uint32_t reg
, uint16_t *value
)
4042 struct e1000_adapter
*adapter
= hw
->back
;
4044 pci_write_config_word(adapter
->pdev
, reg
, *value
);
4048 e1000_io_read(struct e1000_hw
*hw
, unsigned long port
)
4054 e1000_io_write(struct e1000_hw
*hw
, unsigned long port
, uint32_t value
)
4060 e1000_vlan_rx_register(struct net_device
*netdev
, struct vlan_group
*grp
)
4062 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4063 uint32_t ctrl
, rctl
;
4065 e1000_irq_disable(adapter
);
4066 adapter
->vlgrp
= grp
;
4069 /* enable VLAN tag insert/strip */
4070 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4071 ctrl
|= E1000_CTRL_VME
;
4072 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4074 /* enable VLAN receive filtering */
4075 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4076 rctl
|= E1000_RCTL_VFE
;
4077 rctl
&= ~E1000_RCTL_CFIEN
;
4078 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4079 e1000_update_mng_vlan(adapter
);
4081 /* disable VLAN tag insert/strip */
4082 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4083 ctrl
&= ~E1000_CTRL_VME
;
4084 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4086 /* disable VLAN filtering */
4087 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4088 rctl
&= ~E1000_RCTL_VFE
;
4089 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4090 if(adapter
->mng_vlan_id
!= (uint16_t)E1000_MNG_VLAN_NONE
) {
4091 e1000_vlan_rx_kill_vid(netdev
, adapter
->mng_vlan_id
);
4092 adapter
->mng_vlan_id
= E1000_MNG_VLAN_NONE
;
4096 e1000_irq_enable(adapter
);
4100 e1000_vlan_rx_add_vid(struct net_device
*netdev
, uint16_t vid
)
4102 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4103 uint32_t vfta
, index
;
4104 if((adapter
->hw
.mng_cookie
.status
&
4105 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4106 (vid
== adapter
->mng_vlan_id
))
4108 /* add VID to filter table */
4109 index
= (vid
>> 5) & 0x7F;
4110 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4111 vfta
|= (1 << (vid
& 0x1F));
4112 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4116 e1000_vlan_rx_kill_vid(struct net_device
*netdev
, uint16_t vid
)
4118 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4119 uint32_t vfta
, index
;
4121 e1000_irq_disable(adapter
);
4124 adapter
->vlgrp
->vlan_devices
[vid
] = NULL
;
4126 e1000_irq_enable(adapter
);
4128 if((adapter
->hw
.mng_cookie
.status
&
4129 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT
) &&
4130 (vid
== adapter
->mng_vlan_id
))
4132 /* remove VID from filter table */
4133 index
= (vid
>> 5) & 0x7F;
4134 vfta
= E1000_READ_REG_ARRAY(&adapter
->hw
, VFTA
, index
);
4135 vfta
&= ~(1 << (vid
& 0x1F));
4136 e1000_write_vfta(&adapter
->hw
, index
, vfta
);
4140 e1000_restore_vlan(struct e1000_adapter
*adapter
)
4142 e1000_vlan_rx_register(adapter
->netdev
, adapter
->vlgrp
);
4144 if(adapter
->vlgrp
) {
4146 for(vid
= 0; vid
< VLAN_GROUP_ARRAY_LEN
; vid
++) {
4147 if(!adapter
->vlgrp
->vlan_devices
[vid
])
4149 e1000_vlan_rx_add_vid(adapter
->netdev
, vid
);
4155 e1000_set_spd_dplx(struct e1000_adapter
*adapter
, uint16_t spddplx
)
4157 adapter
->hw
.autoneg
= 0;
4159 /* Fiber NICs only allow 1000 gbps Full duplex */
4160 if((adapter
->hw
.media_type
== e1000_media_type_fiber
) &&
4161 spddplx
!= (SPEED_1000
+ DUPLEX_FULL
)) {
4162 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4167 case SPEED_10
+ DUPLEX_HALF
:
4168 adapter
->hw
.forced_speed_duplex
= e1000_10_half
;
4170 case SPEED_10
+ DUPLEX_FULL
:
4171 adapter
->hw
.forced_speed_duplex
= e1000_10_full
;
4173 case SPEED_100
+ DUPLEX_HALF
:
4174 adapter
->hw
.forced_speed_duplex
= e1000_100_half
;
4176 case SPEED_100
+ DUPLEX_FULL
:
4177 adapter
->hw
.forced_speed_duplex
= e1000_100_full
;
4179 case SPEED_1000
+ DUPLEX_FULL
:
4180 adapter
->hw
.autoneg
= 1;
4181 adapter
->hw
.autoneg_advertised
= ADVERTISE_1000_FULL
;
4183 case SPEED_1000
+ DUPLEX_HALF
: /* not supported */
4185 DPRINTK(PROBE
, ERR
, "Unsupported Speed/Duplex configuration\n");
4192 e1000_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4194 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4195 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4196 uint32_t ctrl
, ctrl_ext
, rctl
, manc
, status
, swsm
;
4197 uint32_t wufc
= adapter
->wol
;
4199 netif_device_detach(netdev
);
4201 if(netif_running(netdev
))
4202 e1000_down(adapter
);
4204 status
= E1000_READ_REG(&adapter
->hw
, STATUS
);
4205 if(status
& E1000_STATUS_LU
)
4206 wufc
&= ~E1000_WUFC_LNKC
;
4209 e1000_setup_rctl(adapter
);
4210 e1000_set_multi(netdev
);
4212 /* turn on all-multi mode if wake on multicast is enabled */
4213 if(adapter
->wol
& E1000_WUFC_MC
) {
4214 rctl
= E1000_READ_REG(&adapter
->hw
, RCTL
);
4215 rctl
|= E1000_RCTL_MPE
;
4216 E1000_WRITE_REG(&adapter
->hw
, RCTL
, rctl
);
4219 if(adapter
->hw
.mac_type
>= e1000_82540
) {
4220 ctrl
= E1000_READ_REG(&adapter
->hw
, CTRL
);
4221 /* advertise wake from D3Cold */
4222 #define E1000_CTRL_ADVD3WUC 0x00100000
4223 /* phy power management enable */
4224 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4225 ctrl
|= E1000_CTRL_ADVD3WUC
|
4226 E1000_CTRL_EN_PHY_PWR_MGMT
;
4227 E1000_WRITE_REG(&adapter
->hw
, CTRL
, ctrl
);
4230 if(adapter
->hw
.media_type
== e1000_media_type_fiber
||
4231 adapter
->hw
.media_type
== e1000_media_type_internal_serdes
) {
4232 /* keep the laser running in D3 */
4233 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4234 ctrl_ext
|= E1000_CTRL_EXT_SDP7_DATA
;
4235 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
, ctrl_ext
);
4238 /* Allow time for pending master requests to run */
4239 e1000_disable_pciex_master(&adapter
->hw
);
4241 E1000_WRITE_REG(&adapter
->hw
, WUC
, E1000_WUC_PME_EN
);
4242 E1000_WRITE_REG(&adapter
->hw
, WUFC
, wufc
);
4243 pci_enable_wake(pdev
, 3, 1);
4244 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4246 E1000_WRITE_REG(&adapter
->hw
, WUC
, 0);
4247 E1000_WRITE_REG(&adapter
->hw
, WUFC
, 0);
4248 pci_enable_wake(pdev
, 3, 0);
4249 pci_enable_wake(pdev
, 4, 0); /* 4 == D3 cold */
4252 pci_save_state(pdev
);
4254 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4255 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4256 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4257 if(manc
& E1000_MANC_SMBUS_EN
) {
4258 manc
|= E1000_MANC_ARP_EN
;
4259 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4260 pci_enable_wake(pdev
, 3, 1);
4261 pci_enable_wake(pdev
, 4, 1); /* 4 == D3 cold */
4265 switch(adapter
->hw
.mac_type
) {
4268 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4269 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4270 ctrl_ext
& ~E1000_CTRL_EXT_DRV_LOAD
);
4273 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4274 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4275 swsm
& ~E1000_SWSM_DRV_LOAD
);
4281 pci_disable_device(pdev
);
4282 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4289 e1000_resume(struct pci_dev
*pdev
)
4291 struct net_device
*netdev
= pci_get_drvdata(pdev
);
4292 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4293 uint32_t manc
, ret_val
, swsm
;
4296 pci_set_power_state(pdev
, PCI_D0
);
4297 pci_restore_state(pdev
);
4298 ret_val
= pci_enable_device(pdev
);
4299 pci_set_master(pdev
);
4301 pci_enable_wake(pdev
, PCI_D3hot
, 0);
4302 pci_enable_wake(pdev
, PCI_D3cold
, 0);
4304 e1000_reset(adapter
);
4305 E1000_WRITE_REG(&adapter
->hw
, WUS
, ~0);
4307 if(netif_running(netdev
))
4310 netif_device_attach(netdev
);
4312 if(adapter
->hw
.mac_type
>= e1000_82540
&&
4313 adapter
->hw
.media_type
== e1000_media_type_copper
) {
4314 manc
= E1000_READ_REG(&adapter
->hw
, MANC
);
4315 manc
&= ~(E1000_MANC_ARP_EN
);
4316 E1000_WRITE_REG(&adapter
->hw
, MANC
, manc
);
4319 switch(adapter
->hw
.mac_type
) {
4322 ctrl_ext
= E1000_READ_REG(&adapter
->hw
, CTRL_EXT
);
4323 E1000_WRITE_REG(&adapter
->hw
, CTRL_EXT
,
4324 ctrl_ext
| E1000_CTRL_EXT_DRV_LOAD
);
4327 swsm
= E1000_READ_REG(&adapter
->hw
, SWSM
);
4328 E1000_WRITE_REG(&adapter
->hw
, SWSM
,
4329 swsm
| E1000_SWSM_DRV_LOAD
);
4338 #ifdef CONFIG_NET_POLL_CONTROLLER
4340 * Polling 'interrupt' - used by things like netconsole to send skbs
4341 * without having to re-enable interrupts. It's not called while
4342 * the interrupt routine is executing.
4345 e1000_netpoll(struct net_device
*netdev
)
4347 struct e1000_adapter
*adapter
= netdev_priv(netdev
);
4348 disable_irq(adapter
->pdev
->irq
);
4349 e1000_intr(adapter
->pdev
->irq
, netdev
, NULL
);
4350 e1000_clean_tx_irq(adapter
);
4351 enable_irq(adapter
->pdev
->irq
);