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bonding: select current active slave when enslaving device for mode tlb and alb
[deliverable/linux.git] / drivers / net / e1000 / e1000_main.c
CommitLineData
1da177e4
LT		 1/*******************************************************************************
2
0abb6eb1
AK		 3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
1da177e4 13 more details.
0abb6eb1 14
1da177e4 15 You should have received a copy of the GNU General Public License along with
0abb6eb1
AK		 16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
1da177e4
LT		 22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
3d41e30a 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
1da177e4
LT		 25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29#include "e1000.h"
d0bb53e1 30#include <net/ip6_checksum.h>
1da177e4 31
1da177e4 32char e1000_driver_name[] = "e1000";
3ad2cc67 33static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
15b2bee2 34#define DRV_VERSION "7.3.21-k3-NAPI"
abec42a4
SH		 35const char e1000_driver_version[] = DRV_VERSION;
36static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
1da177e4
LT		 37
38/* e1000_pci_tbl - PCI Device ID Table
39 *
40 * Last entry must be all 0s
41 *
42 * Macro expands to...
43 * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
44 */
45static struct pci_device_id e1000_pci_tbl[] = {
46 INTEL_E1000_ETHERNET_DEVICE(0x1000),
47 INTEL_E1000_ETHERNET_DEVICE(0x1001),
48 INTEL_E1000_ETHERNET_DEVICE(0x1004),
49 INTEL_E1000_ETHERNET_DEVICE(0x1008),
50 INTEL_E1000_ETHERNET_DEVICE(0x1009),
51 INTEL_E1000_ETHERNET_DEVICE(0x100C),
52 INTEL_E1000_ETHERNET_DEVICE(0x100D),
53 INTEL_E1000_ETHERNET_DEVICE(0x100E),
54 INTEL_E1000_ETHERNET_DEVICE(0x100F),
55 INTEL_E1000_ETHERNET_DEVICE(0x1010),
56 INTEL_E1000_ETHERNET_DEVICE(0x1011),
57 INTEL_E1000_ETHERNET_DEVICE(0x1012),
58 INTEL_E1000_ETHERNET_DEVICE(0x1013),
59 INTEL_E1000_ETHERNET_DEVICE(0x1014),
60 INTEL_E1000_ETHERNET_DEVICE(0x1015),
61 INTEL_E1000_ETHERNET_DEVICE(0x1016),
62 INTEL_E1000_ETHERNET_DEVICE(0x1017),
63 INTEL_E1000_ETHERNET_DEVICE(0x1018),
64 INTEL_E1000_ETHERNET_DEVICE(0x1019),
2648345f 65 INTEL_E1000_ETHERNET_DEVICE(0x101A),
1da177e4
LT		 66 INTEL_E1000_ETHERNET_DEVICE(0x101D),
67 INTEL_E1000_ETHERNET_DEVICE(0x101E),
68 INTEL_E1000_ETHERNET_DEVICE(0x1026),
69 INTEL_E1000_ETHERNET_DEVICE(0x1027),
70 INTEL_E1000_ETHERNET_DEVICE(0x1028),
71 INTEL_E1000_ETHERNET_DEVICE(0x1075),
72 INTEL_E1000_ETHERNET_DEVICE(0x1076),
73 INTEL_E1000_ETHERNET_DEVICE(0x1077),
74 INTEL_E1000_ETHERNET_DEVICE(0x1078),
75 INTEL_E1000_ETHERNET_DEVICE(0x1079),
76 INTEL_E1000_ETHERNET_DEVICE(0x107A),
77 INTEL_E1000_ETHERNET_DEVICE(0x107B),
78 INTEL_E1000_ETHERNET_DEVICE(0x107C),
79 INTEL_E1000_ETHERNET_DEVICE(0x108A),
b7ee49db 80 INTEL_E1000_ETHERNET_DEVICE(0x1099),
b7ee49db 81 INTEL_E1000_ETHERNET_DEVICE(0x10B5),
1da177e4
LT		 82 /* required last entry */
83 {0,}
84};
85
86MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
87
35574764
NN		 88int e1000_up(struct e1000_adapter *adapter);
89void e1000_down(struct e1000_adapter *adapter);
90void e1000_reinit_locked(struct e1000_adapter *adapter);
91void e1000_reset(struct e1000_adapter *adapter);
406874a7 92int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
35574764
NN		 93int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
94int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
95void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
96void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
3ad2cc67 97static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
35574764 98 struct e1000_tx_ring *txdr);
3ad2cc67 99static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
35574764 100 struct e1000_rx_ring *rxdr);
3ad2cc67 101static void e1000_free_tx_resources(struct e1000_adapter *adapter,
35574764 102 struct e1000_tx_ring *tx_ring);
3ad2cc67 103static void e1000_free_rx_resources(struct e1000_adapter *adapter,
35574764
NN		 104 struct e1000_rx_ring *rx_ring);
105void e1000_update_stats(struct e1000_adapter *adapter);
1da177e4
LT		 106
107static int e1000_init_module(void);
108static void e1000_exit_module(void);
109static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
110static void __devexit e1000_remove(struct pci_dev *pdev);
581d708e 111static int e1000_alloc_queues(struct e1000_adapter *adapter);
1da177e4
LT		 112static int e1000_sw_init(struct e1000_adapter *adapter);
113static int e1000_open(struct net_device *netdev);
114static int e1000_close(struct net_device *netdev);
115static void e1000_configure_tx(struct e1000_adapter *adapter);
116static void e1000_configure_rx(struct e1000_adapter *adapter);
117static void e1000_setup_rctl(struct e1000_adapter *adapter);
581d708e
MC		 118static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
119static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
120static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
121 struct e1000_tx_ring *tx_ring);
122static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
123 struct e1000_rx_ring *rx_ring);
db0ce50d 124static void e1000_set_rx_mode(struct net_device *netdev);
1da177e4
LT		 125static void e1000_update_phy_info(unsigned long data);
126static void e1000_watchdog(unsigned long data);
1da177e4
LT		 127static void e1000_82547_tx_fifo_stall(unsigned long data);
128static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
129static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
130static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
131static int e1000_set_mac(struct net_device *netdev, void *p);
7d12e780 132static irqreturn_t e1000_intr(int irq, void *data);
9ac98284 133static irqreturn_t e1000_intr_msi(int irq, void *data);
c3033b01
JP		 134static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
135 struct e1000_tx_ring *tx_ring);
bea3348e 136static int e1000_clean(struct napi_struct *napi, int budget);
c3033b01
JP		 137static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
138 struct e1000_rx_ring *rx_ring,
139 int *work_done, int work_to_do);
581d708e 140static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
72d64a43
JK		 141 struct e1000_rx_ring *rx_ring,
142 int cleaned_count);
1da177e4
LT		 143static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
144static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
145 int cmd);
1da177e4
LT		 146static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
147static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
148static void e1000_tx_timeout(struct net_device *dev);
65f27f38 149static void e1000_reset_task(struct work_struct *work);
1da177e4 150static void e1000_smartspeed(struct e1000_adapter *adapter);
e619d523
AK		 151static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
152 struct sk_buff *skb);
1da177e4
LT		 153
154static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
406874a7
JP		 155static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid);
156static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid);
1da177e4
LT		 157static void e1000_restore_vlan(struct e1000_adapter *adapter);
158
977e74b5 159static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
6fdfef16 160#ifdef CONFIG_PM
1da177e4
LT		 161static int e1000_resume(struct pci_dev *pdev);
162#endif
c653e635 163static void e1000_shutdown(struct pci_dev *pdev);
1da177e4
LT		 164
165#ifdef CONFIG_NET_POLL_CONTROLLER
166/* for netdump / net console */
167static void e1000_netpoll (struct net_device *netdev);
168#endif
169
1f753861
JB		 170#define COPYBREAK_DEFAULT 256
171static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
172module_param(copybreak, uint, 0644);
173MODULE_PARM_DESC(copybreak,
174 "Maximum size of packet that is copied to a new buffer on receive");
175
9026729b
AK		 176static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
177 pci_channel_state_t state);
178static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
179static void e1000_io_resume(struct pci_dev *pdev);
180
181static struct pci_error_handlers e1000_err_handler = {
182 .error_detected = e1000_io_error_detected,
183 .slot_reset = e1000_io_slot_reset,
184 .resume = e1000_io_resume,
185};
24025e4e 186
1da177e4
LT		 187static struct pci_driver e1000_driver = {
188 .name = e1000_driver_name,
189 .id_table = e1000_pci_tbl,
190 .probe = e1000_probe,
191 .remove = __devexit_p(e1000_remove),
c4e24f01 192#ifdef CONFIG_PM
1da177e4 193 /* Power Managment Hooks */
1da177e4 194 .suspend = e1000_suspend,
c653e635 195 .resume = e1000_resume,
1da177e4 196#endif
9026729b
AK		 197 .shutdown = e1000_shutdown,
198 .err_handler = &e1000_err_handler
1da177e4
LT		 199};
200
201MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
202MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
203MODULE_LICENSE("GPL");
204MODULE_VERSION(DRV_VERSION);
205
206static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
207module_param(debug, int, 0);
208MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
209
210/**
211 * e1000_init_module - Driver Registration Routine
212 *
213 * e1000_init_module is the first routine called when the driver is
214 * loaded. All it does is register with the PCI subsystem.
215 **/
216
64798845 217static int __init e1000_init_module(void)
1da177e4
LT		 218{
219 int ret;
220 printk(KERN_INFO "%s - version %s\n",
221 e1000_driver_string, e1000_driver_version);
222
223 printk(KERN_INFO "%s\n", e1000_copyright);
224
29917620 225 ret = pci_register_driver(&e1000_driver);
1f753861
JB		 226 if (copybreak != COPYBREAK_DEFAULT) {
227 if (copybreak == 0)
228 printk(KERN_INFO "e1000: copybreak disabled\n");
229 else
230 printk(KERN_INFO "e1000: copybreak enabled for "
231 "packets <= %u bytes\n", copybreak);
232 }
1da177e4
LT		 233 return ret;
234}
235
236module_init(e1000_init_module);
237
238/**
239 * e1000_exit_module - Driver Exit Cleanup Routine
240 *
241 * e1000_exit_module is called just before the driver is removed
242 * from memory.
243 **/
244
64798845 245static void __exit e1000_exit_module(void)
1da177e4 246{
1da177e4
LT		 247 pci_unregister_driver(&e1000_driver);
248}
249
250module_exit(e1000_exit_module);
251
2db10a08
AK		 252static int e1000_request_irq(struct e1000_adapter *adapter)
253{
1dc32918 254 struct e1000_hw *hw = &adapter->hw;
2db10a08 255 struct net_device *netdev = adapter->netdev;
3e18826c 256 irq_handler_t handler = e1000_intr;
e94bd23f
AK		 257 int irq_flags = IRQF_SHARED;
258 int err;
2db10a08 259
1dc32918 260 if (hw->mac_type >= e1000_82571) {
e94bd23f
AK		 261 adapter->have_msi = !pci_enable_msi(adapter->pdev);
262 if (adapter->have_msi) {
3e18826c 263 handler = e1000_intr_msi;
e94bd23f 264 irq_flags = 0;
2db10a08
AK		 265 }
266 }
e94bd23f
AK		 267
268 err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
269 netdev);
270 if (err) {
271 if (adapter->have_msi)
272 pci_disable_msi(adapter->pdev);
2db10a08
AK		 273 DPRINTK(PROBE, ERR,
274 "Unable to allocate interrupt Error: %d\n", err);
e94bd23f 275 }
2db10a08
AK		 276
277 return err;
278}
279
280static void e1000_free_irq(struct e1000_adapter *adapter)
281{
282 struct net_device *netdev = adapter->netdev;
283
284 free_irq(adapter->pdev->irq, netdev);
285
2db10a08
AK		 286 if (adapter->have_msi)
287 pci_disable_msi(adapter->pdev);
2db10a08
AK		 288}
289
1da177e4
LT		 290/**
291 * e1000_irq_disable - Mask off interrupt generation on the NIC
292 * @adapter: board private structure
293 **/
294
64798845 295static void e1000_irq_disable(struct e1000_adapter *adapter)
1da177e4 296{
1dc32918
JP		 297 struct e1000_hw *hw = &adapter->hw;
298
299 ew32(IMC, ~0);
300 E1000_WRITE_FLUSH();
1da177e4
LT		 301 synchronize_irq(adapter->pdev->irq);
302}
303
304/**
305 * e1000_irq_enable - Enable default interrupt generation settings
306 * @adapter: board private structure
307 **/
308
64798845 309static void e1000_irq_enable(struct e1000_adapter *adapter)
1da177e4 310{
1dc32918
JP		 311 struct e1000_hw *hw = &adapter->hw;
312
313 ew32(IMS, IMS_ENABLE_MASK);
314 E1000_WRITE_FLUSH();
1da177e4 315}
3ad2cc67 316
64798845 317static void e1000_update_mng_vlan(struct e1000_adapter *adapter)
2d7edb92 318{
1dc32918 319 struct e1000_hw *hw = &adapter->hw;
2d7edb92 320 struct net_device *netdev = adapter->netdev;
1dc32918 321 u16 vid = hw->mng_cookie.vlan_id;
406874a7 322 u16 old_vid = adapter->mng_vlan_id;
96838a40 323 if (adapter->vlgrp) {
5c15bdec 324 if (!vlan_group_get_device(adapter->vlgrp, vid)) {
1dc32918 325 if (hw->mng_cookie.status &
2d7edb92
MC		 326 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
327 e1000_vlan_rx_add_vid(netdev, vid);
328 adapter->mng_vlan_id = vid;
329 } else
330 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
96838a40 331
406874a7 332 if ((old_vid != (u16)E1000_MNG_VLAN_NONE) &&
96838a40 333 (vid != old_vid) &&
5c15bdec 334 !vlan_group_get_device(adapter->vlgrp, old_vid))
2d7edb92 335 e1000_vlan_rx_kill_vid(netdev, old_vid);
c5f226fe
JK		 336 } else
337 adapter->mng_vlan_id = vid;
2d7edb92
MC		 338 }
339}
b55ccb35
JK		 340
341/**
342 * e1000_release_hw_control - release control of the h/w to f/w
343 * @adapter: address of board private structure
344 *
345 * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
346 * For ASF and Pass Through versions of f/w this means that the
347 * driver is no longer loaded. For AMT version (only with 82573) i
90fb5135 348 * of the f/w this means that the network i/f is closed.
76c224bc 349 *
b55ccb35
JK		 350 **/
351
64798845 352static void e1000_release_hw_control(struct e1000_adapter *adapter)
b55ccb35 353{
406874a7
JP		 354 u32 ctrl_ext;
355 u32 swsm;
1dc32918 356 struct e1000_hw *hw = &adapter->hw;
b55ccb35
JK		 357
358 /* Let firmware taken over control of h/w */
1dc32918 359 switch (hw->mac_type) {
b55ccb35 360 case e1000_82573:
1dc32918
JP		 361 swsm = er32(SWSM);
362 ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD);
31d76442
BA		 363 break;
364 case e1000_82571:
365 case e1000_82572:
366 case e1000_80003es2lan:
cd94dd0b 367 case e1000_ich8lan:
1dc32918
JP		 368 ctrl_ext = er32(CTRL_EXT);
369 ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
cd94dd0b 370 break;
b55ccb35
JK		 371 default:
372 break;
373 }
374}
375
376/**
377 * e1000_get_hw_control - get control of the h/w from f/w
378 * @adapter: address of board private structure
379 *
380 * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
76c224bc
AK		 381 * For ASF and Pass Through versions of f/w this means that
382 * the driver is loaded. For AMT version (only with 82573)
90fb5135 383 * of the f/w this means that the network i/f is open.
76c224bc 384 *
b55ccb35
JK		 385 **/
386
64798845 387static void e1000_get_hw_control(struct e1000_adapter *adapter)
b55ccb35 388{
406874a7
JP		 389 u32 ctrl_ext;
390 u32 swsm;
1dc32918 391 struct e1000_hw *hw = &adapter->hw;
90fb5135 392
b55ccb35 393 /* Let firmware know the driver has taken over */
1dc32918 394 switch (hw->mac_type) {
b55ccb35 395 case e1000_82573:
1dc32918
JP		 396 swsm = er32(SWSM);
397 ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD);
b55ccb35 398 break;
31d76442
BA		 399 case e1000_82571:
400 case e1000_82572:
401 case e1000_80003es2lan:
cd94dd0b 402 case e1000_ich8lan:
1dc32918
JP		 403 ctrl_ext = er32(CTRL_EXT);
404 ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
cd94dd0b 405 break;
b55ccb35
JK		 406 default:
407 break;
408 }
409}
410
64798845 411static void e1000_init_manageability(struct e1000_adapter *adapter)
0fccd0e9 412{
1dc32918
JP		 413 struct e1000_hw *hw = &adapter->hw;
414
0fccd0e9 415 if (adapter->en_mng_pt) {
1dc32918 416 u32 manc = er32(MANC);
0fccd0e9
JG		 417
418 /* disable hardware interception of ARP */
419 manc &= ~(E1000_MANC_ARP_EN);
420
421 /* enable receiving management packets to the host */
422 /* this will probably generate destination unreachable messages
423 * from the host OS, but the packets will be handled on SMBUS */
1dc32918
JP		 424 if (hw->has_manc2h) {
425 u32 manc2h = er32(MANC2H);
0fccd0e9
JG		 426
427 manc |= E1000_MANC_EN_MNG2HOST;
428#define E1000_MNG2HOST_PORT_623 (1 << 5)
429#define E1000_MNG2HOST_PORT_664 (1 << 6)
430 manc2h |= E1000_MNG2HOST_PORT_623;
431 manc2h |= E1000_MNG2HOST_PORT_664;
1dc32918 432 ew32(MANC2H, manc2h);
0fccd0e9
JG		 433 }
434
1dc32918 435 ew32(MANC, manc);
0fccd0e9
JG		 436 }
437}
438
64798845 439static void e1000_release_manageability(struct e1000_adapter *adapter)
0fccd0e9 440{
1dc32918
JP		 441 struct e1000_hw *hw = &adapter->hw;
442
0fccd0e9 443 if (adapter->en_mng_pt) {
1dc32918 444 u32 manc = er32(MANC);
0fccd0e9
JG		 445
446 /* re-enable hardware interception of ARP */
447 manc |= E1000_MANC_ARP_EN;
448
1dc32918 449 if (hw->has_manc2h)
0fccd0e9
JG		 450 manc &= ~E1000_MANC_EN_MNG2HOST;
451
452 /* don't explicitly have to mess with MANC2H since
453 * MANC has an enable disable that gates MANC2H */
454
1dc32918 455 ew32(MANC, manc);
0fccd0e9
JG		 456 }
457}
458
e0aac5a2
AK		 459/**
460 * e1000_configure - configure the hardware for RX and TX
461 * @adapter = private board structure
462 **/
463static void e1000_configure(struct e1000_adapter *adapter)
1da177e4
LT		 464{
465 struct net_device *netdev = adapter->netdev;
2db10a08 466 int i;
1da177e4 467
db0ce50d 468 e1000_set_rx_mode(netdev);
1da177e4
LT		 469
470 e1000_restore_vlan(adapter);
0fccd0e9 471 e1000_init_manageability(adapter);
1da177e4
LT		 472
473 e1000_configure_tx(adapter);
474 e1000_setup_rctl(adapter);
475 e1000_configure_rx(adapter);
72d64a43
JK		 476 /* call E1000_DESC_UNUSED which always leaves
477 * at least 1 descriptor unused to make sure
478 * next_to_use != next_to_clean */
f56799ea 479 for (i = 0; i < adapter->num_rx_queues; i++) {
72d64a43 480 struct e1000_rx_ring *ring = &adapter->rx_ring[i];
a292ca6e
JK		 481 adapter->alloc_rx_buf(adapter, ring,
482 E1000_DESC_UNUSED(ring));
f56799ea 483 }
1da177e4 484
7bfa4816 485 adapter->tx_queue_len = netdev->tx_queue_len;
e0aac5a2
AK		 486}
487
488int e1000_up(struct e1000_adapter *adapter)
489{
1dc32918
JP		 490 struct e1000_hw *hw = &adapter->hw;
491
e0aac5a2
AK		 492 /* hardware has been reset, we need to reload some things */
493 e1000_configure(adapter);
494
495 clear_bit(__E1000_DOWN, &adapter->flags);
7bfa4816 496
bea3348e 497 napi_enable(&adapter->napi);
c3570acb 498
5de55624
MC		 499 e1000_irq_enable(adapter);
500
79f3d399 501 /* fire a link change interrupt to start the watchdog */
1dc32918 502 ew32(ICS, E1000_ICS_LSC);
1da177e4
LT		 503 return 0;
504}
505
79f05bf0
AK		 506/**
507 * e1000_power_up_phy - restore link in case the phy was powered down
508 * @adapter: address of board private structure
509 *
510 * The phy may be powered down to save power and turn off link when the
511 * driver is unloaded and wake on lan is not enabled (among others)
512 * *** this routine MUST be followed by a call to e1000_reset ***
513 *
514 **/
515
d658266e 516void e1000_power_up_phy(struct e1000_adapter *adapter)
79f05bf0 517{
1dc32918 518 struct e1000_hw *hw = &adapter->hw;
406874a7 519 u16 mii_reg = 0;
79f05bf0
AK		 520
521 /* Just clear the power down bit to wake the phy back up */
1dc32918 522 if (hw->media_type == e1000_media_type_copper) {
79f05bf0
AK		 523 /* according to the manual, the phy will retain its
524 * settings across a power-down/up cycle */
1dc32918 525 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
79f05bf0 526 mii_reg &= ~MII_CR_POWER_DOWN;
1dc32918 527 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
79f05bf0
AK		 528 }
529}
530
531static void e1000_power_down_phy(struct e1000_adapter *adapter)
532{
1dc32918
JP		 533 struct e1000_hw *hw = &adapter->hw;
534
61c2505f 535 /* Power down the PHY so no link is implied when interface is down *
c3033b01 536 * The PHY cannot be powered down if any of the following is true *
79f05bf0
AK		 537 * (a) WoL is enabled
538 * (b) AMT is active
539 * (c) SoL/IDER session is active */
1dc32918
JP		 540 if (!adapter->wol && hw->mac_type >= e1000_82540 &&
541 hw->media_type == e1000_media_type_copper) {
406874a7 542 u16 mii_reg = 0;
61c2505f 543
1dc32918 544 switch (hw->mac_type) {
61c2505f
BA		 545 case e1000_82540:
546 case e1000_82545:
547 case e1000_82545_rev_3:
548 case e1000_82546:
549 case e1000_82546_rev_3:
550 case e1000_82541:
551 case e1000_82541_rev_2:
552 case e1000_82547:
553 case e1000_82547_rev_2:
1dc32918 554 if (er32(MANC) & E1000_MANC_SMBUS_EN)
61c2505f
BA		 555 goto out;
556 break;
557 case e1000_82571:
558 case e1000_82572:
559 case e1000_82573:
560 case e1000_80003es2lan:
561 case e1000_ich8lan:
1dc32918
JP		 562 if (e1000_check_mng_mode(hw) ||
563 e1000_check_phy_reset_block(hw))
61c2505f
BA		 564 goto out;
565 break;
566 default:
567 goto out;
568 }
1dc32918 569 e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg);
79f05bf0 570 mii_reg |= MII_CR_POWER_DOWN;
1dc32918 571 e1000_write_phy_reg(hw, PHY_CTRL, mii_reg);
79f05bf0
AK		 572 mdelay(1);
573 }
61c2505f
BA		 574out:
575 return;
79f05bf0
AK		 576}
577
64798845 578void e1000_down(struct e1000_adapter *adapter)
1da177e4
LT		 579{
580 struct net_device *netdev = adapter->netdev;
581
1314bbf3
AK		 582 /* signal that we're down so the interrupt handler does not
583 * reschedule our watchdog timer */
584 set_bit(__E1000_DOWN, &adapter->flags);
585
bea3348e 586 napi_disable(&adapter->napi);
c3570acb 587
1da177e4 588 e1000_irq_disable(adapter);
c1605eb3 589
1da177e4
LT		 590 del_timer_sync(&adapter->tx_fifo_stall_timer);
591 del_timer_sync(&adapter->watchdog_timer);
592 del_timer_sync(&adapter->phy_info_timer);
593
7bfa4816 594 netdev->tx_queue_len = adapter->tx_queue_len;
1da177e4
LT		 595 adapter->link_speed = 0;
596 adapter->link_duplex = 0;
597 netif_carrier_off(netdev);
598 netif_stop_queue(netdev);
599
600 e1000_reset(adapter);
581d708e
MC		 601 e1000_clean_all_tx_rings(adapter);
602 e1000_clean_all_rx_rings(adapter);
1da177e4 603}
1da177e4 604
64798845 605void e1000_reinit_locked(struct e1000_adapter *adapter)
2db10a08
AK		 606{
607 WARN_ON(in_interrupt());
608 while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
609 msleep(1);
610 e1000_down(adapter);
611 e1000_up(adapter);
612 clear_bit(__E1000_RESETTING, &adapter->flags);
1da177e4
LT		 613}
614
64798845 615void e1000_reset(struct e1000_adapter *adapter)
1da177e4 616{
1dc32918 617 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 618 u32 pba = 0, tx_space, min_tx_space, min_rx_space;
619 u16 fc_high_water_mark = E1000_FC_HIGH_DIFF;
c3033b01 620 bool legacy_pba_adjust = false;
1da177e4
LT		 621
622 /* Repartition Pba for greater than 9k mtu
623 * To take effect CTRL.RST is required.
624 */
625
1dc32918 626 switch (hw->mac_type) {
018ea44e
BA		 627 case e1000_82542_rev2_0:
628 case e1000_82542_rev2_1:
629 case e1000_82543:
630 case e1000_82544:
631 case e1000_82540:
632 case e1000_82541:
633 case e1000_82541_rev_2:
c3033b01 634 legacy_pba_adjust = true;
018ea44e
BA		 635 pba = E1000_PBA_48K;
636 break;
637 case e1000_82545:
638 case e1000_82545_rev_3:
639 case e1000_82546:
640 case e1000_82546_rev_3:
641 pba = E1000_PBA_48K;
642 break;
2d7edb92 643 case e1000_82547:
0e6ef3e0 644 case e1000_82547_rev_2:
c3033b01 645 legacy_pba_adjust = true;
2d7edb92
MC		 646 pba = E1000_PBA_30K;
647 break;
868d5309
MC		 648 case e1000_82571:
649 case e1000_82572:
6418ecc6 650 case e1000_80003es2lan:
868d5309
MC		 651 pba = E1000_PBA_38K;
652 break;
2d7edb92 653 case e1000_82573:
018ea44e 654 pba = E1000_PBA_20K;
2d7edb92 655 break;
cd94dd0b
AK		 656 case e1000_ich8lan:
657 pba = E1000_PBA_8K;
018ea44e
BA		 658 case e1000_undefined:
659 case e1000_num_macs:
2d7edb92
MC		 660 break;
661 }
662
c3033b01 663 if (legacy_pba_adjust) {
018ea44e
BA		 664 if (adapter->netdev->mtu > E1000_RXBUFFER_8192)
665 pba -= 8; /* allocate more FIFO for Tx */
2d7edb92 666
1dc32918 667 if (hw->mac_type == e1000_82547) {
018ea44e
BA		 668 adapter->tx_fifo_head = 0;
669 adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
670 adapter->tx_fifo_size =
671 (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
672 atomic_set(&adapter->tx_fifo_stall, 0);
673 }
1dc32918 674 } else if (hw->max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) {
018ea44e 675 /* adjust PBA for jumbo frames */
1dc32918 676 ew32(PBA, pba);
018ea44e
BA		 677
678 /* To maintain wire speed transmits, the Tx FIFO should be
679 * large enough to accomodate two full transmit packets,
680 * rounded up to the next 1KB and expressed in KB. Likewise,
681 * the Rx FIFO should be large enough to accomodate at least
682 * one full receive packet and is similarly rounded up and
683 * expressed in KB. */
1dc32918 684 pba = er32(PBA);
018ea44e
BA		 685 /* upper 16 bits has Tx packet buffer allocation size in KB */
686 tx_space = pba >> 16;
687 /* lower 16 bits has Rx packet buffer allocation size in KB */
688 pba &= 0xffff;
689 /* don't include ethernet FCS because hardware appends/strips */
690 min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE +
691 VLAN_TAG_SIZE;
692 min_tx_space = min_rx_space;
693 min_tx_space *= 2;
9099cfb9 694 min_tx_space = ALIGN(min_tx_space, 1024);
018ea44e 695 min_tx_space >>= 10;
9099cfb9 696 min_rx_space = ALIGN(min_rx_space, 1024);
018ea44e
BA		 697 min_rx_space >>= 10;
698
699 /* If current Tx allocation is less than the min Tx FIFO size,
700 * and the min Tx FIFO size is less than the current Rx FIFO
701 * allocation, take space away from current Rx allocation */
702 if (tx_space < min_tx_space &&
703 ((min_tx_space - tx_space) < pba)) {
704 pba = pba - (min_tx_space - tx_space);
705
706 /* PCI/PCIx hardware has PBA alignment constraints */
1dc32918 707 switch (hw->mac_type) {
018ea44e
BA		 708 case e1000_82545 ... e1000_82546_rev_3:
709 pba &= ~(E1000_PBA_8K - 1);
710 break;
711 default:
712 break;
713 }
714
715 /* if short on rx space, rx wins and must trump tx
716 * adjustment or use Early Receive if available */
717 if (pba < min_rx_space) {
1dc32918 718 switch (hw->mac_type) {
018ea44e
BA		 719 case e1000_82573:
720 /* ERT enabled in e1000_configure_rx */
721 break;
722 default:
723 pba = min_rx_space;
724 break;
725 }
726 }
727 }
1da177e4 728 }
2d7edb92 729
1dc32918 730 ew32(PBA, pba);
1da177e4
LT		 731
732 /* flow control settings */
f11b7f85
JK		 733 /* Set the FC high water mark to 90% of the FIFO size.
734 * Required to clear last 3 LSB */
735 fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
cd94dd0b
AK		 736 /* We can't use 90% on small FIFOs because the remainder
737 * would be less than 1 full frame. In this case, we size
738 * it to allow at least a full frame above the high water
739 * mark. */
740 if (pba < E1000_PBA_16K)
741 fc_high_water_mark = (pba * 1024) - 1600;
f11b7f85 742
1dc32918
JP		 743 hw->fc_high_water = fc_high_water_mark;
744 hw->fc_low_water = fc_high_water_mark - 8;
745 if (hw->mac_type == e1000_80003es2lan)
746 hw->fc_pause_time = 0xFFFF;
87041639 747 else
1dc32918
JP		 748 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
749 hw->fc_send_xon = 1;
750 hw->fc = hw->original_fc;
1da177e4 751
2d7edb92 752 /* Allow time for pending master requests to run */
1dc32918
JP		 753 e1000_reset_hw(hw);
754 if (hw->mac_type >= e1000_82544)
755 ew32(WUC, 0);
09ae3e88 756
1dc32918 757 if (e1000_init_hw(hw))
1da177e4 758 DPRINTK(PROBE, ERR, "Hardware Error\n");
2d7edb92 759 e1000_update_mng_vlan(adapter);
3d5460a0
JB		 760
761 /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
1dc32918
JP		 762 if (hw->mac_type >= e1000_82544 &&
763 hw->mac_type <= e1000_82547_rev_2 &&
764 hw->autoneg == 1 &&
765 hw->autoneg_advertised == ADVERTISE_1000_FULL) {
766 u32 ctrl = er32(CTRL);
3d5460a0
JB		 767 /* clear phy power management bit if we are in gig only mode,
768 * which if enabled will attempt negotiation to 100Mb, which
769 * can cause a loss of link at power off or driver unload */
770 ctrl &= ~E1000_CTRL_SWDPIN3;
1dc32918 771 ew32(CTRL, ctrl);
3d5460a0
JB		 772 }
773
1da177e4 774 /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
1dc32918 775 ew32(VET, ETHERNET_IEEE_VLAN_TYPE);
1da177e4 776
1dc32918
JP		 777 e1000_reset_adaptive(hw);
778 e1000_phy_get_info(hw, &adapter->phy_info);
9a53a202
AK		 779
780 if (!adapter->smart_power_down &&
1dc32918
JP		 781 (hw->mac_type == e1000_82571 ||
782 hw->mac_type == e1000_82572)) {
406874a7 783 u16 phy_data = 0;
9a53a202
AK		 784 /* speed up time to link by disabling smart power down, ignore
785 * the return value of this function because there is nothing
786 * different we would do if it failed */
1dc32918 787 e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
9a53a202
AK		 788 &phy_data);
789 phy_data &= ~IGP02E1000_PM_SPD;
1dc32918 790 e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
9a53a202
AK		 791 phy_data);
792 }
793
0fccd0e9 794 e1000_release_manageability(adapter);
1da177e4
LT		 795}
796
67b3c27c
AK		 797/**
798 * Dump the eeprom for users having checksum issues
799 **/
b4ea895d 800static void e1000_dump_eeprom(struct e1000_adapter *adapter)
67b3c27c
AK		 801{
802 struct net_device *netdev = adapter->netdev;
803 struct ethtool_eeprom eeprom;
804 const struct ethtool_ops *ops = netdev->ethtool_ops;
805 u8 *data;
806 int i;
807 u16 csum_old, csum_new = 0;
808
809 eeprom.len = ops->get_eeprom_len(netdev);
810 eeprom.offset = 0;
811
812 data = kmalloc(eeprom.len, GFP_KERNEL);
813 if (!data) {
814 printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
815 " data\n");
816 return;
817 }
818
819 ops->get_eeprom(netdev, &eeprom, data);
820
821 csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
822 (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
823 for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
824 csum_new += data[i] + (data[i + 1] << 8);
825 csum_new = EEPROM_SUM - csum_new;
826
827 printk(KERN_ERR "/*********************/\n");
828 printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
829 printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
830
831 printk(KERN_ERR "Offset Values\n");
832 printk(KERN_ERR "======== ======\n");
833 print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
834
835 printk(KERN_ERR "Include this output when contacting your support "
836 "provider.\n");
837 printk(KERN_ERR "This is not a software error! Something bad "
838 "happened to your hardware or\n");
839 printk(KERN_ERR "EEPROM image. Ignoring this "
840 "problem could result in further problems,\n");
841 printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
842 printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
843 "which is invalid\n");
844 printk(KERN_ERR "and requires you to set the proper MAC "
845 "address manually before continuing\n");
846 printk(KERN_ERR "to enable this network device.\n");
847 printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
848 "to your hardware vendor\n");
63cd31f6 849 printk(KERN_ERR "or Intel Customer Support.\n");
67b3c27c
AK		 850 printk(KERN_ERR "/*********************/\n");
851
852 kfree(data);
853}
854
81250297
TI		 855/**
856 * e1000_is_need_ioport - determine if an adapter needs ioport resources or not
857 * @pdev: PCI device information struct
858 *
859 * Return true if an adapter needs ioport resources
860 **/
861static int e1000_is_need_ioport(struct pci_dev *pdev)
862{
863 switch (pdev->device) {
864 case E1000_DEV_ID_82540EM:
865 case E1000_DEV_ID_82540EM_LOM:
866 case E1000_DEV_ID_82540EP:
867 case E1000_DEV_ID_82540EP_LOM:
868 case E1000_DEV_ID_82540EP_LP:
869 case E1000_DEV_ID_82541EI:
870 case E1000_DEV_ID_82541EI_MOBILE:
871 case E1000_DEV_ID_82541ER:
872 case E1000_DEV_ID_82541ER_LOM:
873 case E1000_DEV_ID_82541GI:
874 case E1000_DEV_ID_82541GI_LF:
875 case E1000_DEV_ID_82541GI_MOBILE:
876 case E1000_DEV_ID_82544EI_COPPER:
877 case E1000_DEV_ID_82544EI_FIBER:
878 case E1000_DEV_ID_82544GC_COPPER:
879 case E1000_DEV_ID_82544GC_LOM:
880 case E1000_DEV_ID_82545EM_COPPER:
881 case E1000_DEV_ID_82545EM_FIBER:
882 case E1000_DEV_ID_82546EB_COPPER:
883 case E1000_DEV_ID_82546EB_FIBER:
884 case E1000_DEV_ID_82546EB_QUAD_COPPER:
885 return true;
886 default:
887 return false;
888 }
889}
890
0e7614bc
SH		 891static const struct net_device_ops e1000_netdev_ops = {
892 .ndo_open = e1000_open,
893 .ndo_stop = e1000_close,
00829823 894 .ndo_start_xmit = e1000_xmit_frame,
0e7614bc
SH		 895 .ndo_get_stats = e1000_get_stats,
896 .ndo_set_rx_mode = e1000_set_rx_mode,
897 .ndo_set_mac_address = e1000_set_mac,
898 .ndo_tx_timeout = e1000_tx_timeout,
899 .ndo_change_mtu = e1000_change_mtu,
900 .ndo_do_ioctl = e1000_ioctl,
901 .ndo_validate_addr = eth_validate_addr,
902
903 .ndo_vlan_rx_register = e1000_vlan_rx_register,
904 .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
905 .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
906#ifdef CONFIG_NET_POLL_CONTROLLER
907 .ndo_poll_controller = e1000_netpoll,
908#endif
909};
910
1da177e4
LT		 911/**
912 * e1000_probe - Device Initialization Routine
913 * @pdev: PCI device information struct
914 * @ent: entry in e1000_pci_tbl
915 *
916 * Returns 0 on success, negative on failure
917 *
918 * e1000_probe initializes an adapter identified by a pci_dev structure.
919 * The OS initialization, configuring of the adapter private structure,
920 * and a hardware reset occur.
921 **/
1dc32918
JP		 922static int __devinit e1000_probe(struct pci_dev *pdev,
923 const struct pci_device_id *ent)
1da177e4
LT		 924{
925 struct net_device *netdev;
926 struct e1000_adapter *adapter;
1dc32918 927 struct e1000_hw *hw;
2d7edb92 928
1da177e4 929 static int cards_found = 0;
120cd576 930 static int global_quad_port_a = 0; /* global ksp3 port a indication */
2d7edb92 931 int i, err, pci_using_dac;
406874a7
JP		 932 u16 eeprom_data = 0;
933 u16 eeprom_apme_mask = E1000_EEPROM_APME;
81250297 934 int bars, need_ioport;
0795af57 935
81250297
TI		 936 /* do not allocate ioport bars when not needed */
937 need_ioport = e1000_is_need_ioport(pdev);
938 if (need_ioport) {
939 bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
940 err = pci_enable_device(pdev);
941 } else {
942 bars = pci_select_bars(pdev, IORESOURCE_MEM);
4d7155b9 943 err = pci_enable_device_mem(pdev);
81250297 944 }
c7be73bc 945 if (err)
1da177e4
LT		 946 return err;
947
c7be73bc
JP		 948 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) &&
949 !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) {
1da177e4
LT		 950 pci_using_dac = 1;
951 } else {
c7be73bc
JP		 952 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
953 if (err) {
954 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
955 if (err) {
956 E1000_ERR("No usable DMA configuration, "
957 "aborting\n");
958 goto err_dma;
959 }
1da177e4
LT		 960 }
961 pci_using_dac = 0;
962 }
963
81250297 964 err = pci_request_selected_regions(pdev, bars, e1000_driver_name);
c7be73bc 965 if (err)
6dd62ab0 966 goto err_pci_reg;
1da177e4
LT		 967
968 pci_set_master(pdev);
969
6dd62ab0 970 err = -ENOMEM;
1da177e4 971 netdev = alloc_etherdev(sizeof(struct e1000_adapter));
6dd62ab0 972 if (!netdev)
1da177e4 973 goto err_alloc_etherdev;
1da177e4 974
1da177e4
LT		 975 SET_NETDEV_DEV(netdev, &pdev->dev);
976
977 pci_set_drvdata(pdev, netdev);
60490fe0 978 adapter = netdev_priv(netdev);
1da177e4
LT		 979 adapter->netdev = netdev;
980 adapter->pdev = pdev;
1da177e4 981 adapter->msg_enable = (1 << debug) - 1;
81250297
TI		 982 adapter->bars = bars;
983 adapter->need_ioport = need_ioport;
1da177e4 984
1dc32918
JP		 985 hw = &adapter->hw;
986 hw->back = adapter;
987
6dd62ab0 988 err = -EIO;
275f165f 989 hw->hw_addr = pci_ioremap_bar(pdev, BAR_0);
1dc32918 990 if (!hw->hw_addr)
1da177e4 991 goto err_ioremap;
1da177e4 992
81250297
TI		 993 if (adapter->need_ioport) {
994 for (i = BAR_1; i <= BAR_5; i++) {
995 if (pci_resource_len(pdev, i) == 0)
996 continue;
997 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
998 hw->io_base = pci_resource_start(pdev, i);
999 break;
1000 }
1da177e4
LT		 1001 }
1002 }
1003
0e7614bc 1004 netdev->netdev_ops = &e1000_netdev_ops;
1da177e4 1005 e1000_set_ethtool_ops(netdev);
1da177e4 1006 netdev->watchdog_timeo = 5 * HZ;
bea3348e 1007 netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
0e7614bc 1008
0eb5a34c 1009 strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
1da177e4 1010
1da177e4
LT		 1011 adapter->bd_number = cards_found;
1012
1013 /* setup the private structure */
1014
c7be73bc
JP		 1015 err = e1000_sw_init(adapter);
1016 if (err)
1da177e4
LT		 1017 goto err_sw_init;
1018
6dd62ab0 1019 err = -EIO;
cd94dd0b
AK		 1020 /* Flash BAR mapping must happen after e1000_sw_init
1021 * because it depends on mac_type */
1dc32918 1022 if ((hw->mac_type == e1000_ich8lan) &&
cd94dd0b 1023 (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
275f165f 1024 hw->flash_address = pci_ioremap_bar(pdev, 1);
1dc32918 1025 if (!hw->flash_address)
cd94dd0b 1026 goto err_flashmap;
cd94dd0b
AK		 1027 }
1028
1dc32918 1029 if (e1000_check_phy_reset_block(hw))
2d7edb92
MC		 1030 DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
1031
1dc32918 1032 if (hw->mac_type >= e1000_82543) {
1da177e4
LT		 1033 netdev->features = NETIF_F_SG |
1034 NETIF_F_HW_CSUM |
1035 NETIF_F_HW_VLAN_TX |
1036 NETIF_F_HW_VLAN_RX |
1037 NETIF_F_HW_VLAN_FILTER;
1dc32918 1038 if (hw->mac_type == e1000_ich8lan)
cd94dd0b 1039 netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
1da177e4
LT		 1040 }
1041
1dc32918
JP		 1042 if ((hw->mac_type >= e1000_82544) &&
1043 (hw->mac_type != e1000_82547))
1da177e4 1044 netdev->features |= NETIF_F_TSO;
2d7edb92 1045
1dc32918 1046 if (hw->mac_type > e1000_82547_rev_2)
87ca4e5b 1047 netdev->features |= NETIF_F_TSO6;
96838a40 1048 if (pci_using_dac)
1da177e4
LT		 1049 netdev->features |= NETIF_F_HIGHDMA;
1050
20501a69
PM		 1051 netdev->vlan_features |= NETIF_F_TSO;
1052 netdev->vlan_features |= NETIF_F_TSO6;
1053 netdev->vlan_features |= NETIF_F_HW_CSUM;
1054 netdev->vlan_features |= NETIF_F_SG;
1055
1dc32918 1056 adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw);
2d7edb92 1057
cd94dd0b 1058 /* initialize eeprom parameters */
1dc32918 1059 if (e1000_init_eeprom_params(hw)) {
cd94dd0b 1060 E1000_ERR("EEPROM initialization failed\n");
6dd62ab0 1061 goto err_eeprom;
cd94dd0b
AK		 1062 }
1063
96838a40 1064 /* before reading the EEPROM, reset the controller to
1da177e4 1065 * put the device in a known good starting state */
96838a40 1066
1dc32918 1067 e1000_reset_hw(hw);
1da177e4
LT		 1068
1069 /* make sure the EEPROM is good */
1dc32918 1070 if (e1000_validate_eeprom_checksum(hw) < 0) {
1da177e4 1071 DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
67b3c27c
AK		 1072 e1000_dump_eeprom(adapter);
1073 /*
1074 * set MAC address to all zeroes to invalidate and temporary
1075 * disable this device for the user. This blocks regular
1076 * traffic while still permitting ethtool ioctls from reaching
1077 * the hardware as well as allowing the user to run the
1078 * interface after manually setting a hw addr using
1079 * `ip set address`
1080 */
1dc32918 1081 memset(hw->mac_addr, 0, netdev->addr_len);
67b3c27c
AK		 1082 } else {
1083 /* copy the MAC address out of the EEPROM */
1dc32918 1084 if (e1000_read_mac_addr(hw))
67b3c27c 1085 DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
1da177e4 1086 }
67b3c27c 1087 /* don't block initalization here due to bad MAC address */
1dc32918
JP		 1088 memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len);
1089 memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len);
1da177e4 1090
67b3c27c 1091 if (!is_valid_ether_addr(netdev->perm_addr))
1da177e4 1092 DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
1da177e4 1093
1dc32918 1094 e1000_get_bus_info(hw);
1da177e4
LT		 1095
1096 init_timer(&adapter->tx_fifo_stall_timer);
1097 adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
e982f17c 1098 adapter->tx_fifo_stall_timer.data = (unsigned long)adapter;
1da177e4
LT		 1099
1100 init_timer(&adapter->watchdog_timer);
1101 adapter->watchdog_timer.function = &e1000_watchdog;
1102 adapter->watchdog_timer.data = (unsigned long) adapter;
1103
1da177e4
LT		 1104 init_timer(&adapter->phy_info_timer);
1105 adapter->phy_info_timer.function = &e1000_update_phy_info;
e982f17c 1106 adapter->phy_info_timer.data = (unsigned long)adapter;
1da177e4 1107
65f27f38 1108 INIT_WORK(&adapter->reset_task, e1000_reset_task);
1da177e4 1109
1da177e4
LT		 1110 e1000_check_options(adapter);
1111
1112 /* Initial Wake on LAN setting
1113 * If APM wake is enabled in the EEPROM,
1114 * enable the ACPI Magic Packet filter
1115 */
1116
1dc32918 1117 switch (hw->mac_type) {
1da177e4
LT		 1118 case e1000_82542_rev2_0:
1119 case e1000_82542_rev2_1:
1120 case e1000_82543:
1121 break;
1122 case e1000_82544:
1dc32918 1123 e1000_read_eeprom(hw,
1da177e4
LT		 1124 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
1125 eeprom_apme_mask = E1000_EEPROM_82544_APM;
1126 break;
cd94dd0b 1127 case e1000_ich8lan:
1dc32918 1128 e1000_read_eeprom(hw,
cd94dd0b
AK		 1129 EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
1130 eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
1131 break;
1da177e4
LT		 1132 case e1000_82546:
1133 case e1000_82546_rev_3:
fd803241 1134 case e1000_82571:
6418ecc6 1135 case e1000_80003es2lan:
1dc32918
JP		 1136 if (er32(STATUS) & E1000_STATUS_FUNC_1){
1137 e1000_read_eeprom(hw,
1da177e4
LT		 1138 EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
1139 break;
1140 }
1141 /* Fall Through */
1142 default:
1dc32918 1143 e1000_read_eeprom(hw,
1da177e4
LT		 1144 EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
1145 break;
1146 }
96838a40 1147 if (eeprom_data & eeprom_apme_mask)
120cd576
JB		 1148 adapter->eeprom_wol |= E1000_WUFC_MAG;
1149
1150 /* now that we have the eeprom settings, apply the special cases
1151 * where the eeprom may be wrong or the board simply won't support
1152 * wake on lan on a particular port */
1153 switch (pdev->device) {
1154 case E1000_DEV_ID_82546GB_PCIE:
1155 adapter->eeprom_wol = 0;
1156 break;
1157 case E1000_DEV_ID_82546EB_FIBER:
1158 case E1000_DEV_ID_82546GB_FIBER:
1159 case E1000_DEV_ID_82571EB_FIBER:
1160 /* Wake events only supported on port A for dual fiber
1161 * regardless of eeprom setting */
1dc32918 1162 if (er32(STATUS) & E1000_STATUS_FUNC_1)
120cd576
JB		 1163 adapter->eeprom_wol = 0;
1164 break;
1165 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
5881cde8 1166 case E1000_DEV_ID_82571EB_QUAD_COPPER:
ce57a02c 1167 case E1000_DEV_ID_82571EB_QUAD_FIBER:
fc2307d0 1168 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
f4ec7f98 1169 case E1000_DEV_ID_82571PT_QUAD_COPPER:
120cd576
JB		 1170 /* if quad port adapter, disable WoL on all but port A */
1171 if (global_quad_port_a != 0)
1172 adapter->eeprom_wol = 0;
1173 else
1174 adapter->quad_port_a = 1;
1175 /* Reset for multiple quad port adapters */
1176 if (++global_quad_port_a == 4)
1177 global_quad_port_a = 0;
1178 break;
1179 }
1180
1181 /* initialize the wol settings based on the eeprom settings */
1182 adapter->wol = adapter->eeprom_wol;
de126489 1183 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1da177e4 1184
fb3d47d4 1185 /* print bus type/speed/width info */
fb3d47d4
JK		 1186 DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ",
1187 ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
1188 (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
1189 ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
1190 (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
1191 (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
1192 (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
1193 (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
1194 ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
1195 (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
1196 (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
1197 "32-bit"));
fb3d47d4 1198
e174961c 1199 printk("%pM\n", netdev->dev_addr);
fb3d47d4 1200
1dc32918 1201 if (hw->bus_type == e1000_bus_type_pci_express) {
14782ca8
AK		 1202 DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no "
1203 "longer be supported by this driver in the future.\n",
1204 pdev->vendor, pdev->device);
1205 DPRINTK(PROBE, WARNING, "please use the \"e1000e\" "
1206 "driver instead.\n");
1207 }
1208
1da177e4
LT		 1209 /* reset the hardware with the new settings */
1210 e1000_reset(adapter);
1211
b55ccb35
JK		 1212 /* If the controller is 82573 and f/w is AMT, do not set
1213 * DRV_LOAD until the interface is up. For all other cases,
1214 * let the f/w know that the h/w is now under the control
1215 * of the driver. */
1dc32918
JP		 1216 if (hw->mac_type != e1000_82573 ||
1217 !e1000_check_mng_mode(hw))
b55ccb35 1218 e1000_get_hw_control(adapter);
2d7edb92 1219
1314bbf3
AK		 1220 /* tell the stack to leave us alone until e1000_open() is called */
1221 netif_carrier_off(netdev);
1222 netif_stop_queue(netdev);
416b5d10
AK		 1223
1224 strcpy(netdev->name, "eth%d");
c7be73bc
JP		 1225 err = register_netdev(netdev);
1226 if (err)
416b5d10 1227 goto err_register;
1314bbf3 1228
1da177e4
LT		 1229 DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
1230
1231 cards_found++;
1232 return 0;
1233
1234err_register:
6dd62ab0
VA		 1235 e1000_release_hw_control(adapter);
1236err_eeprom:
1dc32918
JP		 1237 if (!e1000_check_phy_reset_block(hw))
1238 e1000_phy_hw_reset(hw);
6dd62ab0 1239
1dc32918
JP		 1240 if (hw->flash_address)
1241 iounmap(hw->flash_address);
cd94dd0b 1242err_flashmap:
6dd62ab0
VA		 1243 kfree(adapter->tx_ring);
1244 kfree(adapter->rx_ring);
1da177e4 1245err_sw_init:
1dc32918 1246 iounmap(hw->hw_addr);
1da177e4
LT		 1247err_ioremap:
1248 free_netdev(netdev);
1249err_alloc_etherdev:
81250297 1250 pci_release_selected_regions(pdev, bars);
6dd62ab0
VA		 1251err_pci_reg:
1252err_dma:
1253 pci_disable_device(pdev);
1da177e4
LT		 1254 return err;
1255}
1256
1257/**
1258 * e1000_remove - Device Removal Routine
1259 * @pdev: PCI device information struct
1260 *
1261 * e1000_remove is called by the PCI subsystem to alert the driver
1262 * that it should release a PCI device. The could be caused by a
1263 * Hot-Plug event, or because the driver is going to be removed from
1264 * memory.
1265 **/
1266
64798845 1267static void __devexit e1000_remove(struct pci_dev *pdev)
1da177e4
LT		 1268{
1269 struct net_device *netdev = pci_get_drvdata(pdev);
60490fe0 1270 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 1271 struct e1000_hw *hw = &adapter->hw;
1da177e4 1272
28e53bdd 1273 cancel_work_sync(&adapter->reset_task);
be2b28ed 1274
0fccd0e9 1275 e1000_release_manageability(adapter);
1da177e4 1276
b55ccb35
JK		 1277 /* Release control of h/w to f/w. If f/w is AMT enabled, this
1278 * would have already happened in close and is redundant. */
1279 e1000_release_hw_control(adapter);
2d7edb92 1280
bea3348e
SH		 1281 unregister_netdev(netdev);
1282
1dc32918
JP		 1283 if (!e1000_check_phy_reset_block(hw))
1284 e1000_phy_hw_reset(hw);
1da177e4 1285
24025e4e
MC		 1286 kfree(adapter->tx_ring);
1287 kfree(adapter->rx_ring);
24025e4e 1288
1dc32918
JP		 1289 iounmap(hw->hw_addr);
1290 if (hw->flash_address)
1291 iounmap(hw->flash_address);
81250297 1292 pci_release_selected_regions(pdev, adapter->bars);
1da177e4
LT		 1293
1294 free_netdev(netdev);
1295
1296 pci_disable_device(pdev);
1297}
1298
1299/**
1300 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
1301 * @adapter: board private structure to initialize
1302 *
1303 * e1000_sw_init initializes the Adapter private data structure.
1304 * Fields are initialized based on PCI device information and
1305 * OS network device settings (MTU size).
1306 **/
1307
64798845 1308static int __devinit e1000_sw_init(struct e1000_adapter *adapter)
1da177e4
LT		 1309{
1310 struct e1000_hw *hw = &adapter->hw;
1311 struct net_device *netdev = adapter->netdev;
1312 struct pci_dev *pdev = adapter->pdev;
1313
1314 /* PCI config space info */
1315
1316 hw->vendor_id = pdev->vendor;
1317 hw->device_id = pdev->device;
1318 hw->subsystem_vendor_id = pdev->subsystem_vendor;
1319 hw->subsystem_id = pdev->subsystem_device;
44c10138 1320 hw->revision_id = pdev->revision;
1da177e4
LT		 1321
1322 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
1323
eb0f8054 1324 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
1da177e4
LT		 1325 hw->max_frame_size = netdev->mtu +
1326 ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
1327 hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
1328
1329 /* identify the MAC */
1330
96838a40 1331 if (e1000_set_mac_type(hw)) {
1da177e4
LT		 1332 DPRINTK(PROBE, ERR, "Unknown MAC Type\n");
1333 return -EIO;
1334 }
1335
96838a40 1336 switch (hw->mac_type) {
1da177e4
LT		 1337 default:
1338 break;
1339 case e1000_82541:
1340 case e1000_82547:
1341 case e1000_82541_rev_2:
1342 case e1000_82547_rev_2:
1343 hw->phy_init_script = 1;
1344 break;
1345 }
1346
1347 e1000_set_media_type(hw);
1348
c3033b01
JP		 1349 hw->wait_autoneg_complete = false;
1350 hw->tbi_compatibility_en = true;
1351 hw->adaptive_ifs = true;
1da177e4
LT		 1352
1353 /* Copper options */
1354
96838a40 1355 if (hw->media_type == e1000_media_type_copper) {
1da177e4 1356 hw->mdix = AUTO_ALL_MODES;
c3033b01 1357 hw->disable_polarity_correction = false;
1da177e4
LT		 1358 hw->master_slave = E1000_MASTER_SLAVE;
1359 }
1360
f56799ea
JK		 1361 adapter->num_tx_queues = 1;
1362 adapter->num_rx_queues = 1;
581d708e
MC		 1363
1364 if (e1000_alloc_queues(adapter)) {
1365 DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
1366 return -ENOMEM;
1367 }
1368
47313054 1369 /* Explicitly disable IRQ since the NIC can be in any state. */
47313054
HX		 1370 e1000_irq_disable(adapter);
1371
1da177e4 1372 spin_lock_init(&adapter->stats_lock);
1da177e4 1373
1314bbf3
AK		 1374 set_bit(__E1000_DOWN, &adapter->flags);
1375
1da177e4
LT		 1376 return 0;
1377}
1378
581d708e
MC		 1379/**
1380 * e1000_alloc_queues - Allocate memory for all rings
1381 * @adapter: board private structure to initialize
1382 *
1383 * We allocate one ring per queue at run-time since we don't know the
3e1d7cd2 1384 * number of queues at compile-time.
581d708e
MC		 1385 **/
1386
64798845 1387static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
581d708e 1388{
1c7e5b12
YB		 1389 adapter->tx_ring = kcalloc(adapter->num_tx_queues,
1390 sizeof(struct e1000_tx_ring), GFP_KERNEL);
581d708e
MC		 1391 if (!adapter->tx_ring)
1392 return -ENOMEM;
581d708e 1393
1c7e5b12
YB		 1394 adapter->rx_ring = kcalloc(adapter->num_rx_queues,
1395 sizeof(struct e1000_rx_ring), GFP_KERNEL);
581d708e
MC		 1396 if (!adapter->rx_ring) {
1397 kfree(adapter->tx_ring);
1398 return -ENOMEM;
1399 }
581d708e 1400
581d708e
MC		 1401 return E1000_SUCCESS;
1402}
1403
1da177e4
LT		 1404/**
1405 * e1000_open - Called when a network interface is made active
1406 * @netdev: network interface device structure
1407 *
1408 * Returns 0 on success, negative value on failure
1409 *
1410 * The open entry point is called when a network interface is made
1411 * active by the system (IFF_UP). At this point all resources needed
1412 * for transmit and receive operations are allocated, the interrupt
1413 * handler is registered with the OS, the watchdog timer is started,
1414 * and the stack is notified that the interface is ready.
1415 **/
1416
64798845 1417static int e1000_open(struct net_device *netdev)
1da177e4 1418{
60490fe0 1419 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 1420 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 1421 int err;
1422
2db10a08 1423 /* disallow open during test */
1314bbf3 1424 if (test_bit(__E1000_TESTING, &adapter->flags))
2db10a08
AK		 1425 return -EBUSY;
1426
1da177e4 1427 /* allocate transmit descriptors */
e0aac5a2
AK		 1428 err = e1000_setup_all_tx_resources(adapter);
1429 if (err)
1da177e4
LT		 1430 goto err_setup_tx;
1431
1432 /* allocate receive descriptors */
e0aac5a2 1433 err = e1000_setup_all_rx_resources(adapter);
b5bf28cd 1434 if (err)
e0aac5a2 1435 goto err_setup_rx;
b5bf28cd 1436
79f05bf0
AK		 1437 e1000_power_up_phy(adapter);
1438
2d7edb92 1439 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
1dc32918 1440 if ((hw->mng_cookie.status &
2d7edb92
MC		 1441 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
1442 e1000_update_mng_vlan(adapter);
1443 }
1da177e4 1444
b55ccb35
JK		 1445 /* If AMT is enabled, let the firmware know that the network
1446 * interface is now open */
1dc32918
JP		 1447 if (hw->mac_type == e1000_82573 &&
1448 e1000_check_mng_mode(hw))
b55ccb35
JK		 1449 e1000_get_hw_control(adapter);
1450
e0aac5a2
AK		 1451 /* before we allocate an interrupt, we must be ready to handle it.
1452 * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
1453 * as soon as we call pci_request_irq, so we have to setup our
1454 * clean_rx handler before we do so. */
1455 e1000_configure(adapter);
1456
1457 err = e1000_request_irq(adapter);
1458 if (err)
1459 goto err_req_irq;
1460
1461 /* From here on the code is the same as e1000_up() */
1462 clear_bit(__E1000_DOWN, &adapter->flags);
1463
bea3348e 1464 napi_enable(&adapter->napi);
47313054 1465
e0aac5a2
AK		 1466 e1000_irq_enable(adapter);
1467
076152d5
BH		 1468 netif_start_queue(netdev);
1469
e0aac5a2 1470 /* fire a link status change interrupt to start the watchdog */
1dc32918 1471 ew32(ICS, E1000_ICS_LSC);
e0aac5a2 1472
1da177e4
LT		 1473 return E1000_SUCCESS;
1474
b5bf28cd 1475err_req_irq:
e0aac5a2
AK		 1476 e1000_release_hw_control(adapter);
1477 e1000_power_down_phy(adapter);
581d708e 1478 e1000_free_all_rx_resources(adapter);
1da177e4 1479err_setup_rx:
581d708e 1480 e1000_free_all_tx_resources(adapter);
1da177e4
LT		 1481err_setup_tx:
1482 e1000_reset(adapter);
1483
1484 return err;
1485}
1486
1487/**
1488 * e1000_close - Disables a network interface
1489 * @netdev: network interface device structure
1490 *
1491 * Returns 0, this is not allowed to fail
1492 *
1493 * The close entry point is called when an interface is de-activated
1494 * by the OS. The hardware is still under the drivers control, but
1495 * needs to be disabled. A global MAC reset is issued to stop the
1496 * hardware, and all transmit and receive resources are freed.
1497 **/
1498
64798845 1499static int e1000_close(struct net_device *netdev)
1da177e4 1500{
60490fe0 1501 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 1502 struct e1000_hw *hw = &adapter->hw;
1da177e4 1503
2db10a08 1504 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1da177e4 1505 e1000_down(adapter);
79f05bf0 1506 e1000_power_down_phy(adapter);
2db10a08 1507 e1000_free_irq(adapter);
1da177e4 1508
581d708e
MC		 1509 e1000_free_all_tx_resources(adapter);
1510 e1000_free_all_rx_resources(adapter);
1da177e4 1511
4666560a
BA		 1512 /* kill manageability vlan ID if supported, but not if a vlan with
1513 * the same ID is registered on the host OS (let 8021q kill it) */
1dc32918 1514 if ((hw->mng_cookie.status &
4666560a
BA		 1515 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
1516 !(adapter->vlgrp &&
5c15bdec 1517 vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
2d7edb92
MC		 1518 e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
1519 }
b55ccb35
JK		 1520
1521 /* If AMT is enabled, let the firmware know that the network
1522 * interface is now closed */
1dc32918
JP		 1523 if (hw->mac_type == e1000_82573 &&
1524 e1000_check_mng_mode(hw))
b55ccb35
JK		 1525 e1000_release_hw_control(adapter);
1526
1da177e4
LT		 1527 return 0;
1528}
1529
1530/**
1531 * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
1532 * @adapter: address of board private structure
2d7edb92
MC		 1533 * @start: address of beginning of memory
1534 * @len: length of memory
1da177e4 1535 **/
64798845
JP		 1536static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start,
1537 unsigned long len)
1da177e4 1538{
1dc32918 1539 struct e1000_hw *hw = &adapter->hw;
e982f17c 1540 unsigned long begin = (unsigned long)start;
1da177e4
LT		 1541 unsigned long end = begin + len;
1542
2648345f
MC		 1543 /* First rev 82545 and 82546 need to not allow any memory
1544 * write location to cross 64k boundary due to errata 23 */
1dc32918
JP		 1545 if (hw->mac_type == e1000_82545 ||
1546 hw->mac_type == e1000_82546) {
c3033b01 1547 return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
1da177e4
LT		 1548 }
1549
c3033b01 1550 return true;
1da177e4
LT		 1551}
1552
1553/**
1554 * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
1555 * @adapter: board private structure
581d708e 1556 * @txdr: tx descriptor ring (for a specific queue) to setup
1da177e4
LT		 1557 *
1558 * Return 0 on success, negative on failure
1559 **/
1560
64798845
JP		 1561static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
1562 struct e1000_tx_ring *txdr)
1da177e4 1563{
1da177e4
LT		 1564 struct pci_dev *pdev = adapter->pdev;
1565 int size;
1566
1567 size = sizeof(struct e1000_buffer) * txdr->count;
cd94dd0b 1568 txdr->buffer_info = vmalloc(size);
96838a40 1569 if (!txdr->buffer_info) {
2648345f
MC		 1570 DPRINTK(PROBE, ERR,
1571 "Unable to allocate memory for the transmit descriptor ring\n");
1da177e4
LT		 1572 return -ENOMEM;
1573 }
1574 memset(txdr->buffer_info, 0, size);
1575
1576 /* round up to nearest 4K */
1577
1578 txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
9099cfb9 1579 txdr->size = ALIGN(txdr->size, 4096);
1da177e4
LT		 1580
1581 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
96838a40 1582 if (!txdr->desc) {
1da177e4 1583setup_tx_desc_die:
1da177e4 1584 vfree(txdr->buffer_info);
2648345f
MC		 1585 DPRINTK(PROBE, ERR,
1586 "Unable to allocate memory for the transmit descriptor ring\n");
1da177e4
LT		 1587 return -ENOMEM;
1588 }
1589
2648345f 1590 /* Fix for errata 23, can't cross 64kB boundary */
1da177e4
LT		 1591 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1592 void *olddesc = txdr->desc;
1593 dma_addr_t olddma = txdr->dma;
2648345f
MC		 1594 DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
1595 "at %p\n", txdr->size, txdr->desc);
1596 /* Try again, without freeing the previous */
1da177e4 1597 txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
2648345f 1598 /* Failed allocation, critical failure */
96838a40 1599 if (!txdr->desc) {
1da177e4
LT		 1600 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1601 goto setup_tx_desc_die;
1602 }
1603
1604 if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
1605 /* give up */
2648345f
MC		 1606 pci_free_consistent(pdev, txdr->size, txdr->desc,
1607 txdr->dma);
1da177e4
LT		 1608 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1609 DPRINTK(PROBE, ERR,
2648345f
MC		 1610 "Unable to allocate aligned memory "
1611 "for the transmit descriptor ring\n");
1da177e4
LT		 1612 vfree(txdr->buffer_info);
1613 return -ENOMEM;
1614 } else {
2648345f 1615 /* Free old allocation, new allocation was successful */
1da177e4
LT		 1616 pci_free_consistent(pdev, txdr->size, olddesc, olddma);
1617 }
1618 }
1619 memset(txdr->desc, 0, txdr->size);
1620
1621 txdr->next_to_use = 0;
1622 txdr->next_to_clean = 0;
1623
1624 return 0;
1625}
1626
581d708e
MC		 1627/**
1628 * e1000_setup_all_tx_resources - wrapper to allocate Tx resources
1629 * (Descriptors) for all queues
1630 * @adapter: board private structure
1631 *
581d708e
MC		 1632 * Return 0 on success, negative on failure
1633 **/
1634
64798845 1635int e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
581d708e
MC		 1636{
1637 int i, err = 0;
1638
f56799ea 1639 for (i = 0; i < adapter->num_tx_queues; i++) {
581d708e
MC		 1640 err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
1641 if (err) {
1642 DPRINTK(PROBE, ERR,
1643 "Allocation for Tx Queue %u failed\n", i);
3fbbc72e
VA		 1644 for (i-- ; i >= 0; i--)
1645 e1000_free_tx_resources(adapter,
1646 &adapter->tx_ring[i]);
581d708e
MC		 1647 break;
1648 }
1649 }
1650
1651 return err;
1652}
1653
1da177e4
LT		 1654/**
1655 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
1656 * @adapter: board private structure
1657 *
1658 * Configure the Tx unit of the MAC after a reset.
1659 **/
1660
64798845 1661static void e1000_configure_tx(struct e1000_adapter *adapter)
1da177e4 1662{
406874a7 1663 u64 tdba;
581d708e 1664 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 1665 u32 tdlen, tctl, tipg, tarc;
1666 u32 ipgr1, ipgr2;
1da177e4
LT		 1667
1668 /* Setup the HW Tx Head and Tail descriptor pointers */
1669
f56799ea 1670 switch (adapter->num_tx_queues) {
24025e4e
MC		 1671 case 1:
1672 default:
581d708e
MC		 1673 tdba = adapter->tx_ring[0].dma;
1674 tdlen = adapter->tx_ring[0].count *
1675 sizeof(struct e1000_tx_desc);
1dc32918
JP		 1676 ew32(TDLEN, tdlen);
1677 ew32(TDBAH, (tdba >> 32));
1678 ew32(TDBAL, (tdba & 0x00000000ffffffffULL));
1679 ew32(TDT, 0);
1680 ew32(TDH, 0);
6a951698
AK		 1681 adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
1682 adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
24025e4e
MC		 1683 break;
1684 }
1da177e4
LT		 1685
1686 /* Set the default values for the Tx Inter Packet Gap timer */
1dc32918 1687 if (hw->mac_type <= e1000_82547_rev_2 &&
d89b6c67
JB		 1688 (hw->media_type == e1000_media_type_fiber ||
1689 hw->media_type == e1000_media_type_internal_serdes))
0fadb059
JK		 1690 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
1691 else
1692 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
1693
581d708e 1694 switch (hw->mac_type) {
1da177e4
LT		 1695 case e1000_82542_rev2_0:
1696 case e1000_82542_rev2_1:
1697 tipg = DEFAULT_82542_TIPG_IPGT;
0fadb059
JK		 1698 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
1699 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
1da177e4 1700 break;
87041639
JK		 1701 case e1000_80003es2lan:
1702 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1703 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
1704 break;
1da177e4 1705 default:
0fadb059
JK		 1706 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
1707 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
1708 break;
1da177e4 1709 }
0fadb059
JK		 1710 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
1711 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
1dc32918 1712 ew32(TIPG, tipg);
1da177e4
LT		 1713
1714 /* Set the Tx Interrupt Delay register */
1715
1dc32918 1716 ew32(TIDV, adapter->tx_int_delay);
581d708e 1717 if (hw->mac_type >= e1000_82540)
1dc32918 1718 ew32(TADV, adapter->tx_abs_int_delay);
1da177e4
LT		 1719
1720 /* Program the Transmit Control Register */
1721
1dc32918 1722 tctl = er32(TCTL);
1da177e4 1723 tctl &= ~E1000_TCTL_CT;
7e6c9861 1724 tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
1da177e4
LT		 1725 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
1726
2ae76d98 1727 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
1dc32918 1728 tarc = er32(TARC0);
90fb5135
AK		 1729 /* set the speed mode bit, we'll clear it if we're not at
1730 * gigabit link later */
09ae3e88 1731 tarc |= (1 << 21);
1dc32918 1732 ew32(TARC0, tarc);
87041639 1733 } else if (hw->mac_type == e1000_80003es2lan) {
1dc32918 1734 tarc = er32(TARC0);
87041639 1735 tarc |= 1;
1dc32918
JP		 1736 ew32(TARC0, tarc);
1737 tarc = er32(TARC1);
87041639 1738 tarc |= 1;
1dc32918 1739 ew32(TARC1, tarc);
2ae76d98
MC		 1740 }
1741
581d708e 1742 e1000_config_collision_dist(hw);
1da177e4
LT		 1743
1744 /* Setup Transmit Descriptor Settings for eop descriptor */
6a042dab
JB		 1745 adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
1746
1747 /* only set IDE if we are delaying interrupts using the timers */
1748 if (adapter->tx_int_delay)
1749 adapter->txd_cmd |= E1000_TXD_CMD_IDE;
1da177e4 1750
581d708e 1751 if (hw->mac_type < e1000_82543)
1da177e4
LT		 1752 adapter->txd_cmd |= E1000_TXD_CMD_RPS;
1753 else
1754 adapter->txd_cmd |= E1000_TXD_CMD_RS;
1755
1756 /* Cache if we're 82544 running in PCI-X because we'll
1757 * need this to apply a workaround later in the send path. */
581d708e
MC		 1758 if (hw->mac_type == e1000_82544 &&
1759 hw->bus_type == e1000_bus_type_pcix)
1da177e4 1760 adapter->pcix_82544 = 1;
7e6c9861 1761
1dc32918 1762 ew32(TCTL, tctl);
7e6c9861 1763
1da177e4
LT		 1764}
1765
1766/**
1767 * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
1768 * @adapter: board private structure
581d708e 1769 * @rxdr: rx descriptor ring (for a specific queue) to setup
1da177e4
LT		 1770 *
1771 * Returns 0 on success, negative on failure
1772 **/
1773
64798845
JP		 1774static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
1775 struct e1000_rx_ring *rxdr)
1da177e4 1776{
1dc32918 1777 struct e1000_hw *hw = &adapter->hw;
1da177e4 1778 struct pci_dev *pdev = adapter->pdev;
2d7edb92 1779 int size, desc_len;
1da177e4
LT		 1780
1781 size = sizeof(struct e1000_buffer) * rxdr->count;
cd94dd0b 1782 rxdr->buffer_info = vmalloc(size);
581d708e 1783 if (!rxdr->buffer_info) {
2648345f
MC		 1784 DPRINTK(PROBE, ERR,
1785 "Unable to allocate memory for the receive descriptor ring\n");
1da177e4
LT		 1786 return -ENOMEM;
1787 }
1788 memset(rxdr->buffer_info, 0, size);
1789
1dc32918 1790 if (hw->mac_type <= e1000_82547_rev_2)
2d7edb92
MC		 1791 desc_len = sizeof(struct e1000_rx_desc);
1792 else
1793 desc_len = sizeof(union e1000_rx_desc_packet_split);
1794
1da177e4
LT		 1795 /* Round up to nearest 4K */
1796
2d7edb92 1797 rxdr->size = rxdr->count * desc_len;
9099cfb9 1798 rxdr->size = ALIGN(rxdr->size, 4096);
1da177e4
LT		 1799
1800 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
1801
581d708e
MC		 1802 if (!rxdr->desc) {
1803 DPRINTK(PROBE, ERR,
1804 "Unable to allocate memory for the receive descriptor ring\n");
1da177e4 1805setup_rx_desc_die:
1da177e4
LT		 1806 vfree(rxdr->buffer_info);
1807 return -ENOMEM;
1808 }
1809
2648345f 1810 /* Fix for errata 23, can't cross 64kB boundary */
1da177e4
LT		 1811 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1812 void *olddesc = rxdr->desc;
1813 dma_addr_t olddma = rxdr->dma;
2648345f
MC		 1814 DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
1815 "at %p\n", rxdr->size, rxdr->desc);
1816 /* Try again, without freeing the previous */
1da177e4 1817 rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
2648345f 1818 /* Failed allocation, critical failure */
581d708e 1819 if (!rxdr->desc) {
1da177e4 1820 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
581d708e
MC		 1821 DPRINTK(PROBE, ERR,
1822 "Unable to allocate memory "
1823 "for the receive descriptor ring\n");
1da177e4
LT		 1824 goto setup_rx_desc_die;
1825 }
1826
1827 if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
1828 /* give up */
2648345f
MC		 1829 pci_free_consistent(pdev, rxdr->size, rxdr->desc,
1830 rxdr->dma);
1da177e4 1831 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
2648345f
MC		 1832 DPRINTK(PROBE, ERR,
1833 "Unable to allocate aligned memory "
1834 "for the receive descriptor ring\n");
581d708e 1835 goto setup_rx_desc_die;
1da177e4 1836 } else {
2648345f 1837 /* Free old allocation, new allocation was successful */
1da177e4
LT		 1838 pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
1839 }
1840 }
1841 memset(rxdr->desc, 0, rxdr->size);
1842
1843 rxdr->next_to_clean = 0;
1844 rxdr->next_to_use = 0;
1845
1846 return 0;
1847}
1848
581d708e
MC		 1849/**
1850 * e1000_setup_all_rx_resources - wrapper to allocate Rx resources
1851 * (Descriptors) for all queues
1852 * @adapter: board private structure
1853 *
581d708e
MC		 1854 * Return 0 on success, negative on failure
1855 **/
1856
64798845 1857int e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
581d708e
MC		 1858{
1859 int i, err = 0;
1860
f56799ea 1861 for (i = 0; i < adapter->num_rx_queues; i++) {
581d708e
MC		 1862 err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
1863 if (err) {
1864 DPRINTK(PROBE, ERR,
1865 "Allocation for Rx Queue %u failed\n", i);
3fbbc72e
VA		 1866 for (i-- ; i >= 0; i--)
1867 e1000_free_rx_resources(adapter,
1868 &adapter->rx_ring[i]);
581d708e
MC		 1869 break;
1870 }
1871 }
1872
1873 return err;
1874}
1875
1da177e4 1876/**
2648345f 1877 * e1000_setup_rctl - configure the receive control registers
1da177e4
LT		 1878 * @adapter: Board private structure
1879 **/
64798845 1880static void e1000_setup_rctl(struct e1000_adapter *adapter)
1da177e4 1881{
1dc32918 1882 struct e1000_hw *hw = &adapter->hw;
630b25cd 1883 u32 rctl;
1da177e4 1884
1dc32918 1885 rctl = er32(RCTL);
1da177e4
LT		 1886
1887 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
1888
1889 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
1890 E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1dc32918 1891 (hw->mc_filter_type << E1000_RCTL_MO_SHIFT);
1da177e4 1892
1dc32918 1893 if (hw->tbi_compatibility_on == 1)
1da177e4
LT		 1894 rctl |= E1000_RCTL_SBP;
1895 else
1896 rctl &= ~E1000_RCTL_SBP;
1897
2d7edb92
MC		 1898 if (adapter->netdev->mtu <= ETH_DATA_LEN)
1899 rctl &= ~E1000_RCTL_LPE;
1900 else
1901 rctl |= E1000_RCTL_LPE;
1902
1da177e4 1903 /* Setup buffer sizes */
9e2feace
AK		 1904 rctl &= ~E1000_RCTL_SZ_4096;
1905 rctl |= E1000_RCTL_BSEX;
1906 switch (adapter->rx_buffer_len) {
1907 case E1000_RXBUFFER_256:
1908 rctl |= E1000_RCTL_SZ_256;
1909 rctl &= ~E1000_RCTL_BSEX;
1910 break;
1911 case E1000_RXBUFFER_512:
1912 rctl |= E1000_RCTL_SZ_512;
1913 rctl &= ~E1000_RCTL_BSEX;
1914 break;
1915 case E1000_RXBUFFER_1024:
1916 rctl |= E1000_RCTL_SZ_1024;
1917 rctl &= ~E1000_RCTL_BSEX;
1918 break;
a1415ee6
JK		 1919 case E1000_RXBUFFER_2048:
1920 default:
1921 rctl |= E1000_RCTL_SZ_2048;
1922 rctl &= ~E1000_RCTL_BSEX;
1923 break;
1924 case E1000_RXBUFFER_4096:
1925 rctl |= E1000_RCTL_SZ_4096;
1926 break;
1927 case E1000_RXBUFFER_8192:
1928 rctl |= E1000_RCTL_SZ_8192;
1929 break;
1930 case E1000_RXBUFFER_16384:
1931 rctl |= E1000_RCTL_SZ_16384;
1932 break;
2d7edb92
MC		 1933 }
1934
1dc32918 1935 ew32(RCTL, rctl);
1da177e4
LT		 1936}
1937
1938/**
1939 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
1940 * @adapter: board private structure
1941 *
1942 * Configure the Rx unit of the MAC after a reset.
1943 **/
1944
64798845 1945static void e1000_configure_rx(struct e1000_adapter *adapter)
1da177e4 1946{
406874a7 1947 u64 rdba;
581d708e 1948 struct e1000_hw *hw = &adapter->hw;
406874a7 1949 u32 rdlen, rctl, rxcsum, ctrl_ext;
2d7edb92 1950
630b25cd
BJ		 1951 rdlen = adapter->rx_ring[0].count *
1952 sizeof(struct e1000_rx_desc);
1953 adapter->clean_rx = e1000_clean_rx_irq;
1954 adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
1da177e4
LT		 1955
1956 /* disable receives while setting up the descriptors */
1dc32918
JP		 1957 rctl = er32(RCTL);
1958 ew32(RCTL, rctl & ~E1000_RCTL_EN);
1da177e4
LT		 1959
1960 /* set the Receive Delay Timer Register */
1dc32918 1961 ew32(RDTR, adapter->rx_int_delay);
1da177e4 1962
581d708e 1963 if (hw->mac_type >= e1000_82540) {
1dc32918 1964 ew32(RADV, adapter->rx_abs_int_delay);
835bb129 1965 if (adapter->itr_setting != 0)
1dc32918 1966 ew32(ITR, 1000000000 / (adapter->itr * 256));
1da177e4
LT		 1967 }
1968
2ae76d98 1969 if (hw->mac_type >= e1000_82571) {
1dc32918 1970 ctrl_ext = er32(CTRL_EXT);
1e613fd9 1971 /* Reset delay timers after every interrupt */
6fc7a7ec 1972 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
835bb129 1973 /* Auto-Mask interrupts upon ICR access */
1e613fd9 1974 ctrl_ext |= E1000_CTRL_EXT_IAME;
1dc32918 1975 ew32(IAM, 0xffffffff);
1dc32918
JP		 1976 ew32(CTRL_EXT, ctrl_ext);
1977 E1000_WRITE_FLUSH();
2ae76d98
MC		 1978 }
1979
581d708e
MC		 1980 /* Setup the HW Rx Head and Tail Descriptor Pointers and
1981 * the Base and Length of the Rx Descriptor Ring */
f56799ea 1982 switch (adapter->num_rx_queues) {
24025e4e
MC		 1983 case 1:
1984 default:
581d708e 1985 rdba = adapter->rx_ring[0].dma;
1dc32918
JP		 1986 ew32(RDLEN, rdlen);
1987 ew32(RDBAH, (rdba >> 32));
1988 ew32(RDBAL, (rdba & 0x00000000ffffffffULL));
1989 ew32(RDT, 0);
1990 ew32(RDH, 0);
6a951698
AK		 1991 adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
1992 adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
581d708e 1993 break;
24025e4e
MC		 1994 }
1995
1da177e4 1996 /* Enable 82543 Receive Checksum Offload for TCP and UDP */
581d708e 1997 if (hw->mac_type >= e1000_82543) {
1dc32918 1998 rxcsum = er32(RXCSUM);
630b25cd 1999 if (adapter->rx_csum)
2d7edb92 2000 rxcsum |= E1000_RXCSUM_TUOFL;
630b25cd 2001 else
2d7edb92 2002 /* don't need to clear IPPCSE as it defaults to 0 */
630b25cd 2003 rxcsum &= ~E1000_RXCSUM_TUOFL;
1dc32918 2004 ew32(RXCSUM, rxcsum);
1da177e4
LT		 2005 }
2006
2007 /* Enable Receives */
1dc32918 2008 ew32(RCTL, rctl);
1da177e4
LT		 2009}
2010
2011/**
581d708e 2012 * e1000_free_tx_resources - Free Tx Resources per Queue
1da177e4 2013 * @adapter: board private structure
581d708e 2014 * @tx_ring: Tx descriptor ring for a specific queue
1da177e4
LT		 2015 *
2016 * Free all transmit software resources
2017 **/
2018
64798845
JP		 2019static void e1000_free_tx_resources(struct e1000_adapter *adapter,
2020 struct e1000_tx_ring *tx_ring)
1da177e4
LT		 2021{
2022 struct pci_dev *pdev = adapter->pdev;
2023
581d708e 2024 e1000_clean_tx_ring(adapter, tx_ring);
1da177e4 2025
581d708e
MC		 2026 vfree(tx_ring->buffer_info);
2027 tx_ring->buffer_info = NULL;
1da177e4 2028
581d708e 2029 pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
1da177e4 2030
581d708e
MC		 2031 tx_ring->desc = NULL;
2032}
2033
2034/**
2035 * e1000_free_all_tx_resources - Free Tx Resources for All Queues
2036 * @adapter: board private structure
2037 *
2038 * Free all transmit software resources
2039 **/
2040
64798845 2041void e1000_free_all_tx_resources(struct e1000_adapter *adapter)
581d708e
MC		 2042{
2043 int i;
2044
f56799ea 2045 for (i = 0; i < adapter->num_tx_queues; i++)
581d708e 2046 e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
1da177e4
LT		 2047}
2048
64798845
JP		 2049static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
2050 struct e1000_buffer *buffer_info)
1da177e4 2051{
d20b606c 2052 buffer_info->dma = 0;
a9ebadd6 2053 if (buffer_info->skb) {
d20b606c
JB		 2054 skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb,
2055 DMA_TO_DEVICE);
1da177e4 2056 dev_kfree_skb_any(buffer_info->skb);
a9ebadd6
JB		 2057 buffer_info->skb = NULL;
2058 }
2059 /* buffer_info must be completely set up in the transmit path */
1da177e4
LT		 2060}
2061
2062/**
2063 * e1000_clean_tx_ring - Free Tx Buffers
2064 * @adapter: board private structure
581d708e 2065 * @tx_ring: ring to be cleaned
1da177e4
LT		 2066 **/
2067
64798845
JP		 2068static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
2069 struct e1000_tx_ring *tx_ring)
1da177e4 2070{
1dc32918 2071 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 2072 struct e1000_buffer *buffer_info;
2073 unsigned long size;
2074 unsigned int i;
2075
2076 /* Free all the Tx ring sk_buffs */
2077
96838a40 2078 for (i = 0; i < tx_ring->count; i++) {
1da177e4
LT		 2079 buffer_info = &tx_ring->buffer_info[i];
2080 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
2081 }
2082
2083 size = sizeof(struct e1000_buffer) * tx_ring->count;
2084 memset(tx_ring->buffer_info, 0, size);
2085
2086 /* Zero out the descriptor ring */
2087
2088 memset(tx_ring->desc, 0, tx_ring->size);
2089
2090 tx_ring->next_to_use = 0;
2091 tx_ring->next_to_clean = 0;
fd803241 2092 tx_ring->last_tx_tso = 0;
1da177e4 2093
1dc32918
JP		 2094 writel(0, hw->hw_addr + tx_ring->tdh);
2095 writel(0, hw->hw_addr + tx_ring->tdt);
581d708e
MC		 2096}
2097
2098/**
2099 * e1000_clean_all_tx_rings - Free Tx Buffers for all queues
2100 * @adapter: board private structure
2101 **/
2102
64798845 2103static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
581d708e
MC		 2104{
2105 int i;
2106
f56799ea 2107 for (i = 0; i < adapter->num_tx_queues; i++)
581d708e 2108 e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
1da177e4
LT		 2109}
2110
2111/**
2112 * e1000_free_rx_resources - Free Rx Resources
2113 * @adapter: board private structure
581d708e 2114 * @rx_ring: ring to clean the resources from
1da177e4
LT		 2115 *
2116 * Free all receive software resources
2117 **/
2118
64798845
JP		 2119static void e1000_free_rx_resources(struct e1000_adapter *adapter,
2120 struct e1000_rx_ring *rx_ring)
1da177e4 2121{
1da177e4
LT		 2122 struct pci_dev *pdev = adapter->pdev;
2123
581d708e 2124 e1000_clean_rx_ring(adapter, rx_ring);
1da177e4
LT		 2125
2126 vfree(rx_ring->buffer_info);
2127 rx_ring->buffer_info = NULL;
2128
2129 pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
2130
2131 rx_ring->desc = NULL;
2132}
2133
2134/**
581d708e 2135 * e1000_free_all_rx_resources - Free Rx Resources for All Queues
1da177e4 2136 * @adapter: board private structure
581d708e
MC		 2137 *
2138 * Free all receive software resources
2139 **/
2140
64798845 2141void e1000_free_all_rx_resources(struct e1000_adapter *adapter)
581d708e
MC		 2142{
2143 int i;
2144
f56799ea 2145 for (i = 0; i < adapter->num_rx_queues; i++)
581d708e
MC		 2146 e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
2147}
2148
2149/**
2150 * e1000_clean_rx_ring - Free Rx Buffers per Queue
2151 * @adapter: board private structure
2152 * @rx_ring: ring to free buffers from
1da177e4
LT		 2153 **/
2154
64798845
JP		 2155static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
2156 struct e1000_rx_ring *rx_ring)
1da177e4 2157{
1dc32918 2158 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 2159 struct e1000_buffer *buffer_info;
2160 struct pci_dev *pdev = adapter->pdev;
2161 unsigned long size;
630b25cd 2162 unsigned int i;
1da177e4
LT		 2163
2164 /* Free all the Rx ring sk_buffs */
96838a40 2165 for (i = 0; i < rx_ring->count; i++) {
1da177e4 2166 buffer_info = &rx_ring->buffer_info[i];
96838a40 2167 if (buffer_info->skb) {
1da177e4
LT		 2168 pci_unmap_single(pdev,
2169 buffer_info->dma,
2170 buffer_info->length,
2171 PCI_DMA_FROMDEVICE);
2172
2173 dev_kfree_skb(buffer_info->skb);
2174 buffer_info->skb = NULL;
997f5cbd 2175 }
1da177e4
LT		 2176 }
2177
2178 size = sizeof(struct e1000_buffer) * rx_ring->count;
2179 memset(rx_ring->buffer_info, 0, size);
2180
2181 /* Zero out the descriptor ring */
2182
2183 memset(rx_ring->desc, 0, rx_ring->size);
2184
2185 rx_ring->next_to_clean = 0;
2186 rx_ring->next_to_use = 0;
2187
1dc32918
JP		 2188 writel(0, hw->hw_addr + rx_ring->rdh);
2189 writel(0, hw->hw_addr + rx_ring->rdt);
581d708e
MC		 2190}
2191
2192/**
2193 * e1000_clean_all_rx_rings - Free Rx Buffers for all queues
2194 * @adapter: board private structure
2195 **/
2196
64798845 2197static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
581d708e
MC		 2198{
2199 int i;
2200
f56799ea 2201 for (i = 0; i < adapter->num_rx_queues; i++)
581d708e 2202 e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
1da177e4
LT		 2203}
2204
2205/* The 82542 2.0 (revision 2) needs to have the receive unit in reset
2206 * and memory write and invalidate disabled for certain operations
2207 */
64798845 2208static void e1000_enter_82542_rst(struct e1000_adapter *adapter)
1da177e4 2209{
1dc32918 2210 struct e1000_hw *hw = &adapter->hw;
1da177e4 2211 struct net_device *netdev = adapter->netdev;
406874a7 2212 u32 rctl;
1da177e4 2213
1dc32918 2214 e1000_pci_clear_mwi(hw);
1da177e4 2215
1dc32918 2216 rctl = er32(RCTL);
1da177e4 2217 rctl |= E1000_RCTL_RST;
1dc32918
JP		 2218 ew32(RCTL, rctl);
2219 E1000_WRITE_FLUSH();
1da177e4
LT		 2220 mdelay(5);
2221
96838a40 2222 if (netif_running(netdev))
581d708e 2223 e1000_clean_all_rx_rings(adapter);
1da177e4
LT		 2224}
2225
64798845 2226static void e1000_leave_82542_rst(struct e1000_adapter *adapter)
1da177e4 2227{
1dc32918 2228 struct e1000_hw *hw = &adapter->hw;
1da177e4 2229 struct net_device *netdev = adapter->netdev;
406874a7 2230 u32 rctl;
1da177e4 2231
1dc32918 2232 rctl = er32(RCTL);
1da177e4 2233 rctl &= ~E1000_RCTL_RST;
1dc32918
JP		 2234 ew32(RCTL, rctl);
2235 E1000_WRITE_FLUSH();
1da177e4
LT		 2236 mdelay(5);
2237
1dc32918
JP		 2238 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
2239 e1000_pci_set_mwi(hw);
1da177e4 2240
96838a40 2241 if (netif_running(netdev)) {
72d64a43
JK		 2242 /* No need to loop, because 82542 supports only 1 queue */
2243 struct e1000_rx_ring *ring = &adapter->rx_ring[0];
7c4d3367 2244 e1000_configure_rx(adapter);
72d64a43 2245 adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
1da177e4
LT		 2246 }
2247}
2248
2249/**
2250 * e1000_set_mac - Change the Ethernet Address of the NIC
2251 * @netdev: network interface device structure
2252 * @p: pointer to an address structure
2253 *
2254 * Returns 0 on success, negative on failure
2255 **/
2256
64798845 2257static int e1000_set_mac(struct net_device *netdev, void *p)
1da177e4 2258{
60490fe0 2259 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 2260 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 2261 struct sockaddr *addr = p;
2262
96838a40 2263 if (!is_valid_ether_addr(addr->sa_data))
1da177e4
LT		 2264 return -EADDRNOTAVAIL;
2265
2266 /* 82542 2.0 needs to be in reset to write receive address registers */
2267
1dc32918 2268 if (hw->mac_type == e1000_82542_rev2_0)
1da177e4
LT		 2269 e1000_enter_82542_rst(adapter);
2270
2271 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1dc32918 2272 memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len);
1da177e4 2273
1dc32918 2274 e1000_rar_set(hw, hw->mac_addr, 0);
1da177e4 2275
868d5309
MC		 2276 /* With 82571 controllers, LAA may be overwritten (with the default)
2277 * due to controller reset from the other port. */
1dc32918 2278 if (hw->mac_type == e1000_82571) {
868d5309 2279 /* activate the work around */
1dc32918 2280 hw->laa_is_present = 1;
868d5309 2281
96838a40
JB		 2282 /* Hold a copy of the LAA in RAR[14] This is done so that
2283 * between the time RAR[0] gets clobbered and the time it
2284 * gets fixed (in e1000_watchdog), the actual LAA is in one
868d5309 2285 * of the RARs and no incoming packets directed to this port
96838a40 2286 * are dropped. Eventaully the LAA will be in RAR[0] and
868d5309 2287 * RAR[14] */
1dc32918 2288 e1000_rar_set(hw, hw->mac_addr,
868d5309
MC		 2289 E1000_RAR_ENTRIES - 1);
2290 }
2291
1dc32918 2292 if (hw->mac_type == e1000_82542_rev2_0)
1da177e4
LT		 2293 e1000_leave_82542_rst(adapter);
2294
2295 return 0;
2296}
2297
2298/**
db0ce50d 2299 * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
1da177e4
LT		 2300 * @netdev: network interface device structure
2301 *
db0ce50d
PM		 2302 * The set_rx_mode entry point is called whenever the unicast or multicast
2303 * address lists or the network interface flags are updated. This routine is
2304 * responsible for configuring the hardware for proper unicast, multicast,
1da177e4
LT		 2305 * promiscuous mode, and all-multi behavior.
2306 **/
2307
64798845 2308static void e1000_set_rx_mode(struct net_device *netdev)
1da177e4 2309{
60490fe0 2310 struct e1000_adapter *adapter = netdev_priv(netdev);
1da177e4 2311 struct e1000_hw *hw = &adapter->hw;
db0ce50d
PM		 2312 struct dev_addr_list *uc_ptr;
2313 struct dev_addr_list *mc_ptr;
406874a7
JP		 2314 u32 rctl;
2315 u32 hash_value;
868d5309 2316 int i, rar_entries = E1000_RAR_ENTRIES;
cd94dd0b
AK		 2317 int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
2318 E1000_NUM_MTA_REGISTERS_ICH8LAN :
2319 E1000_NUM_MTA_REGISTERS;
2320
1dc32918 2321 if (hw->mac_type == e1000_ich8lan)
cd94dd0b 2322 rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
1da177e4 2323
868d5309 2324 /* reserve RAR[14] for LAA over-write work-around */
1dc32918 2325 if (hw->mac_type == e1000_82571)
868d5309 2326 rar_entries--;
1da177e4 2327
2648345f
MC		 2328 /* Check for Promiscuous and All Multicast modes */
2329
1dc32918 2330 rctl = er32(RCTL);
1da177e4 2331
96838a40 2332 if (netdev->flags & IFF_PROMISC) {
1da177e4 2333 rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
746b9f02 2334 rctl &= ~E1000_RCTL_VFE;
1da177e4 2335 } else {
746b9f02
PM		 2336 if (netdev->flags & IFF_ALLMULTI) {
2337 rctl |= E1000_RCTL_MPE;
2338 } else {
2339 rctl &= ~E1000_RCTL_MPE;
2340 }
78ed11a5 2341 if (adapter->hw.mac_type != e1000_ich8lan)
746b9f02 2342 rctl |= E1000_RCTL_VFE;
db0ce50d
PM		 2343 }
2344
2345 uc_ptr = NULL;
2346 if (netdev->uc_count > rar_entries - 1) {
2347 rctl |= E1000_RCTL_UPE;
2348 } else if (!(netdev->flags & IFF_PROMISC)) {
2349 rctl &= ~E1000_RCTL_UPE;
2350 uc_ptr = netdev->uc_list;
1da177e4
LT		 2351 }
2352
1dc32918 2353 ew32(RCTL, rctl);
1da177e4
LT		 2354
2355 /* 82542 2.0 needs to be in reset to write receive address registers */
2356
96838a40 2357 if (hw->mac_type == e1000_82542_rev2_0)
1da177e4
LT		 2358 e1000_enter_82542_rst(adapter);
2359
db0ce50d
PM		 2360 /* load the first 14 addresses into the exact filters 1-14. Unicast
2361 * addresses take precedence to avoid disabling unicast filtering
2362 * when possible.
2363 *
1da177e4
LT		 2364 * RAR 0 is used for the station MAC adddress
2365 * if there are not 14 addresses, go ahead and clear the filters
868d5309 2366 * -- with 82571 controllers only 0-13 entries are filled here
1da177e4
LT		 2367 */
2368 mc_ptr = netdev->mc_list;
2369
96838a40 2370 for (i = 1; i < rar_entries; i++) {
db0ce50d
PM		 2371 if (uc_ptr) {
2372 e1000_rar_set(hw, uc_ptr->da_addr, i);
2373 uc_ptr = uc_ptr->next;
2374 } else if (mc_ptr) {
2375 e1000_rar_set(hw, mc_ptr->da_addr, i);
1da177e4
LT		 2376 mc_ptr = mc_ptr->next;
2377 } else {
2378 E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
1dc32918 2379 E1000_WRITE_FLUSH();
1da177e4 2380 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
1dc32918 2381 E1000_WRITE_FLUSH();
1da177e4
LT		 2382 }
2383 }
db0ce50d 2384 WARN_ON(uc_ptr != NULL);
1da177e4
LT		 2385
2386 /* clear the old settings from the multicast hash table */
2387
cd94dd0b 2388 for (i = 0; i < mta_reg_count; i++) {
1da177e4 2389 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1dc32918 2390 E1000_WRITE_FLUSH();
4ca213a6 2391 }
1da177e4
LT		 2392
2393 /* load any remaining addresses into the hash table */
2394
96838a40 2395 for (; mc_ptr; mc_ptr = mc_ptr->next) {
db0ce50d 2396 hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr);
1da177e4
LT		 2397 e1000_mta_set(hw, hash_value);
2398 }
2399
96838a40 2400 if (hw->mac_type == e1000_82542_rev2_0)
1da177e4 2401 e1000_leave_82542_rst(adapter);
1da177e4
LT		 2402}
2403
2404/* Need to wait a few seconds after link up to get diagnostic information from
2405 * the phy */
2406
64798845 2407static void e1000_update_phy_info(unsigned long data)
1da177e4 2408{
e982f17c 2409 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
1dc32918
JP		 2410 struct e1000_hw *hw = &adapter->hw;
2411 e1000_phy_get_info(hw, &adapter->phy_info);
1da177e4
LT		 2412}
2413
2414/**
2415 * e1000_82547_tx_fifo_stall - Timer Call-back
2416 * @data: pointer to adapter cast into an unsigned long
2417 **/
2418
64798845 2419static void e1000_82547_tx_fifo_stall(unsigned long data)
1da177e4 2420{
e982f17c 2421 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
1dc32918 2422 struct e1000_hw *hw = &adapter->hw;
1da177e4 2423 struct net_device *netdev = adapter->netdev;
406874a7 2424 u32 tctl;
1da177e4 2425
96838a40 2426 if (atomic_read(&adapter->tx_fifo_stall)) {
1dc32918
JP		 2427 if ((er32(TDT) == er32(TDH)) &&
2428 (er32(TDFT) == er32(TDFH)) &&
2429 (er32(TDFTS) == er32(TDFHS))) {
2430 tctl = er32(TCTL);
2431 ew32(TCTL, tctl & ~E1000_TCTL_EN);
2432 ew32(TDFT, adapter->tx_head_addr);
2433 ew32(TDFH, adapter->tx_head_addr);
2434 ew32(TDFTS, adapter->tx_head_addr);
2435 ew32(TDFHS, adapter->tx_head_addr);
2436 ew32(TCTL, tctl);
2437 E1000_WRITE_FLUSH();
1da177e4
LT		 2438
2439 adapter->tx_fifo_head = 0;
2440 atomic_set(&adapter->tx_fifo_stall, 0);
2441 netif_wake_queue(netdev);
2442 } else {
2443 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
2444 }
2445 }
2446}
2447
2448/**
2449 * e1000_watchdog - Timer Call-back
2450 * @data: pointer to adapter cast into an unsigned long
2451 **/
64798845 2452static void e1000_watchdog(unsigned long data)
1da177e4 2453{
e982f17c 2454 struct e1000_adapter *adapter = (struct e1000_adapter *)data;
1dc32918 2455 struct e1000_hw *hw = &adapter->hw;
1da177e4 2456 struct net_device *netdev = adapter->netdev;
545c67c0 2457 struct e1000_tx_ring *txdr = adapter->tx_ring;
406874a7
JP		 2458 u32 link, tctl;
2459 s32 ret_val;
cd94dd0b 2460
1dc32918 2461 ret_val = e1000_check_for_link(hw);
cd94dd0b 2462 if ((ret_val == E1000_ERR_PHY) &&
1dc32918
JP		 2463 (hw->phy_type == e1000_phy_igp_3) &&
2464 (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
cd94dd0b
AK		 2465 /* See e1000_kumeran_lock_loss_workaround() */
2466 DPRINTK(LINK, INFO,
2467 "Gigabit has been disabled, downgrading speed\n");
2468 }
90fb5135 2469
1dc32918
JP		 2470 if (hw->mac_type == e1000_82573) {
2471 e1000_enable_tx_pkt_filtering(hw);
2472 if (adapter->mng_vlan_id != hw->mng_cookie.vlan_id)
2d7edb92 2473 e1000_update_mng_vlan(adapter);
96838a40 2474 }
1da177e4 2475
1dc32918
JP		 2476 if ((hw->media_type == e1000_media_type_internal_serdes) &&
2477 !(er32(TXCW) & E1000_TXCW_ANE))
2478 link = !hw->serdes_link_down;
1da177e4 2479 else
1dc32918 2480 link = er32(STATUS) & E1000_STATUS_LU;
1da177e4 2481
96838a40
JB		 2482 if (link) {
2483 if (!netif_carrier_ok(netdev)) {
406874a7 2484 u32 ctrl;
c3033b01 2485 bool txb2b = true;
1dc32918 2486 e1000_get_speed_and_duplex(hw,
1da177e4
LT		 2487 &adapter->link_speed,
2488 &adapter->link_duplex);
2489
1dc32918 2490 ctrl = er32(CTRL);
b30c4d8f
JK		 2491 printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, "
2492 "Flow Control: %s\n",
2493 netdev->name,
2494 adapter->link_speed,
2495 adapter->link_duplex == FULL_DUPLEX ?
9669f53b
AK		 2496 "Full Duplex" : "Half Duplex",
2497 ((ctrl & E1000_CTRL_TFCE) && (ctrl &
2498 E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
2499 E1000_CTRL_RFCE) ? "RX" : ((ctrl &
2500 E1000_CTRL_TFCE) ? "TX" : "None" )));
1da177e4 2501
7e6c9861
JK		 2502 /* tweak tx_queue_len according to speed/duplex
2503 * and adjust the timeout factor */
66a2b0a3
JK		 2504 netdev->tx_queue_len = adapter->tx_queue_len;
2505 adapter->tx_timeout_factor = 1;
7e6c9861
JK		 2506 switch (adapter->link_speed) {
2507 case SPEED_10:
c3033b01 2508 txb2b = false;
7e6c9861
JK		 2509 netdev->tx_queue_len = 10;
2510 adapter->tx_timeout_factor = 8;
2511 break;
2512 case SPEED_100:
c3033b01 2513 txb2b = false;
7e6c9861
JK		 2514 netdev->tx_queue_len = 100;
2515 /* maybe add some timeout factor ? */
2516 break;
2517 }
2518
1dc32918
JP		 2519 if ((hw->mac_type == e1000_82571 ||
2520 hw->mac_type == e1000_82572) &&
c3033b01 2521 !txb2b) {
406874a7 2522 u32 tarc0;
1dc32918 2523 tarc0 = er32(TARC0);
90fb5135 2524 tarc0 &= ~(1 << 21);
1dc32918 2525 ew32(TARC0, tarc0);
7e6c9861 2526 }
90fb5135 2527
7e6c9861
JK		 2528 /* disable TSO for pcie and 10/100 speeds, to avoid
2529 * some hardware issues */
2530 if (!adapter->tso_force &&
1dc32918 2531 hw->bus_type == e1000_bus_type_pci_express){
66a2b0a3
JK		 2532 switch (adapter->link_speed) {
2533 case SPEED_10:
66a2b0a3 2534 case SPEED_100:
7e6c9861
JK		 2535 DPRINTK(PROBE,INFO,
2536 "10/100 speed: disabling TSO\n");
2537 netdev->features &= ~NETIF_F_TSO;
87ca4e5b 2538 netdev->features &= ~NETIF_F_TSO6;
7e6c9861
JK		 2539 break;
2540 case SPEED_1000:
2541 netdev->features |= NETIF_F_TSO;
87ca4e5b 2542 netdev->features |= NETIF_F_TSO6;
7e6c9861
JK		 2543 break;
2544 default:
2545 /* oops */
66a2b0a3
JK		 2546 break;
2547 }
2548 }
7e6c9861
JK		 2549
2550 /* enable transmits in the hardware, need to do this
2551 * after setting TARC0 */
1dc32918 2552 tctl = er32(TCTL);
7e6c9861 2553 tctl |= E1000_TCTL_EN;
1dc32918 2554 ew32(TCTL, tctl);
66a2b0a3 2555
1da177e4
LT		 2556 netif_carrier_on(netdev);
2557 netif_wake_queue(netdev);
56e1393f 2558 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
1da177e4 2559 adapter->smartspeed = 0;
bb8e3311
JG		 2560 } else {
2561 /* make sure the receive unit is started */
1dc32918
JP		 2562 if (hw->rx_needs_kicking) {
2563 u32 rctl = er32(RCTL);
2564 ew32(RCTL, rctl | E1000_RCTL_EN);
bb8e3311 2565 }
1da177e4
LT		 2566 }
2567 } else {
96838a40 2568 if (netif_carrier_ok(netdev)) {
1da177e4
LT		 2569 adapter->link_speed = 0;
2570 adapter->link_duplex = 0;
b30c4d8f
JK		 2571 printk(KERN_INFO "e1000: %s NIC Link is Down\n",
2572 netdev->name);
1da177e4
LT		 2573 netif_carrier_off(netdev);
2574 netif_stop_queue(netdev);
56e1393f 2575 mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
87041639
JK		 2576
2577 /* 80003ES2LAN workaround--
2578 * For packet buffer work-around on link down event;
2579 * disable receives in the ISR and
2580 * reset device here in the watchdog
2581 */
1dc32918 2582 if (hw->mac_type == e1000_80003es2lan)
87041639
JK		 2583 /* reset device */
2584 schedule_work(&adapter->reset_task);
1da177e4
LT		 2585 }
2586
2587 e1000_smartspeed(adapter);
2588 }
2589
2590 e1000_update_stats(adapter);
2591
1dc32918 2592 hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
1da177e4 2593 adapter->tpt_old = adapter->stats.tpt;
1dc32918 2594 hw->collision_delta = adapter->stats.colc - adapter->colc_old;
1da177e4
LT		 2595 adapter->colc_old = adapter->stats.colc;
2596
2597 adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
2598 adapter->gorcl_old = adapter->stats.gorcl;
2599 adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
2600 adapter->gotcl_old = adapter->stats.gotcl;
2601
1dc32918 2602 e1000_update_adaptive(hw);
1da177e4 2603
f56799ea 2604 if (!netif_carrier_ok(netdev)) {
581d708e 2605 if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
1da177e4
LT		 2606 /* We've lost link, so the controller stops DMA,
2607 * but we've got queued Tx work that's never going
2608 * to get done, so reset controller to flush Tx.
2609 * (Do the reset outside of interrupt context). */
87041639
JK		 2610 adapter->tx_timeout_count++;
2611 schedule_work(&adapter->reset_task);
1da177e4
LT		 2612 }
2613 }
2614
1da177e4 2615 /* Cause software interrupt to ensure rx ring is cleaned */
1dc32918 2616 ew32(ICS, E1000_ICS_RXDMT0);
1da177e4 2617
2648345f 2618 /* Force detection of hung controller every watchdog period */
c3033b01 2619 adapter->detect_tx_hung = true;
1da177e4 2620
96838a40 2621 /* With 82571 controllers, LAA may be overwritten due to controller
868d5309 2622 * reset from the other port. Set the appropriate LAA in RAR[0] */
1dc32918
JP		 2623 if (hw->mac_type == e1000_82571 && hw->laa_is_present)
2624 e1000_rar_set(hw, hw->mac_addr, 0);
868d5309 2625
1da177e4 2626 /* Reset the timer */
56e1393f 2627 mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
1da177e4
LT		 2628}
2629
835bb129
JB		 2630enum latency_range {
2631 lowest_latency = 0,
2632 low_latency = 1,
2633 bulk_latency = 2,
2634 latency_invalid = 255
2635};
2636
2637/**
2638 * e1000_update_itr - update the dynamic ITR value based on statistics
2639 * Stores a new ITR value based on packets and byte
2640 * counts during the last interrupt. The advantage of per interrupt
2641 * computation is faster updates and more accurate ITR for the current
2642 * traffic pattern. Constants in this function were computed
2643 * based on theoretical maximum wire speed and thresholds were set based
2644 * on testing data as well as attempting to minimize response time
2645 * while increasing bulk throughput.
2646 * this functionality is controlled by the InterruptThrottleRate module
2647 * parameter (see e1000_param.c)
2648 * @adapter: pointer to adapter
2649 * @itr_setting: current adapter->itr
2650 * @packets: the number of packets during this measurement interval
2651 * @bytes: the number of bytes during this measurement interval
2652 **/
2653static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
64798845 2654 u16 itr_setting, int packets, int bytes)
835bb129
JB		 2655{
2656 unsigned int retval = itr_setting;
2657 struct e1000_hw *hw = &adapter->hw;
2658
2659 if (unlikely(hw->mac_type < e1000_82540))
2660 goto update_itr_done;
2661
2662 if (packets == 0)
2663 goto update_itr_done;
2664
835bb129
JB		 2665 switch (itr_setting) {
2666 case lowest_latency:
2b65326e
JB		 2667 /* jumbo frames get bulk treatment*/
2668 if (bytes/packets > 8000)
2669 retval = bulk_latency;
2670 else if ((packets < 5) && (bytes > 512))
835bb129
JB		 2671 retval = low_latency;
2672 break;
2673 case low_latency: /* 50 usec aka 20000 ints/s */
2674 if (bytes > 10000) {
2b65326e
JB		 2675 /* jumbo frames need bulk latency setting */
2676 if (bytes/packets > 8000)
2677 retval = bulk_latency;
2678 else if ((packets < 10) || ((bytes/packets) > 1200))
835bb129
JB		 2679 retval = bulk_latency;
2680 else if ((packets > 35))
2681 retval = lowest_latency;
2b65326e
JB		 2682 } else if (bytes/packets > 2000)
2683 retval = bulk_latency;
2684 else if (packets <= 2 && bytes < 512)
835bb129
JB		 2685 retval = lowest_latency;
2686 break;
2687 case bulk_latency: /* 250 usec aka 4000 ints/s */
2688 if (bytes > 25000) {
2689 if (packets > 35)
2690 retval = low_latency;
2b65326e
JB		 2691 } else if (bytes < 6000) {
2692 retval = low_latency;
835bb129
JB		 2693 }
2694 break;
2695 }
2696
2697update_itr_done:
2698 return retval;
2699}
2700
2701static void e1000_set_itr(struct e1000_adapter *adapter)
2702{
2703 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 2704 u16 current_itr;
2705 u32 new_itr = adapter->itr;
835bb129
JB		 2706
2707 if (unlikely(hw->mac_type < e1000_82540))
2708 return;
2709
2710 /* for non-gigabit speeds, just fix the interrupt rate at 4000 */
2711 if (unlikely(adapter->link_speed != SPEED_1000)) {
2712 current_itr = 0;
2713 new_itr = 4000;
2714 goto set_itr_now;
2715 }
2716
2717 adapter->tx_itr = e1000_update_itr(adapter,
2718 adapter->tx_itr,
2719 adapter->total_tx_packets,
2720 adapter->total_tx_bytes);
2b65326e
JB		 2721 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2722 if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
2723 adapter->tx_itr = low_latency;
2724
835bb129
JB		 2725 adapter->rx_itr = e1000_update_itr(adapter,
2726 adapter->rx_itr,
2727 adapter->total_rx_packets,
2728 adapter->total_rx_bytes);
2b65326e
JB		 2729 /* conservative mode (itr 3) eliminates the lowest_latency setting */
2730 if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
2731 adapter->rx_itr = low_latency;
835bb129
JB		 2732
2733 current_itr = max(adapter->rx_itr, adapter->tx_itr);
2734
835bb129
JB		 2735 switch (current_itr) {
2736 /* counts and packets in update_itr are dependent on these numbers */
2737 case lowest_latency:
2738 new_itr = 70000;
2739 break;
2740 case low_latency:
2741 new_itr = 20000; /* aka hwitr = ~200 */
2742 break;
2743 case bulk_latency:
2744 new_itr = 4000;
2745 break;
2746 default:
2747 break;
2748 }
2749
2750set_itr_now:
2751 if (new_itr != adapter->itr) {
2752 /* this attempts to bias the interrupt rate towards Bulk
2753 * by adding intermediate steps when interrupt rate is
2754 * increasing */
2755 new_itr = new_itr > adapter->itr ?
2756 min(adapter->itr + (new_itr >> 2), new_itr) :
2757 new_itr;
2758 adapter->itr = new_itr;
1dc32918 2759 ew32(ITR, 1000000000 / (new_itr * 256));
835bb129
JB		 2760 }
2761
2762 return;
2763}
2764
1da177e4
LT		 2765#define E1000_TX_FLAGS_CSUM 0x00000001
2766#define E1000_TX_FLAGS_VLAN 0x00000002
2767#define E1000_TX_FLAGS_TSO 0x00000004
2d7edb92 2768#define E1000_TX_FLAGS_IPV4 0x00000008
1da177e4
LT		 2769#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
2770#define E1000_TX_FLAGS_VLAN_SHIFT 16
2771
64798845
JP		 2772static int e1000_tso(struct e1000_adapter *adapter,
2773 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
1da177e4 2774{
1da177e4 2775 struct e1000_context_desc *context_desc;
545c67c0 2776 struct e1000_buffer *buffer_info;
1da177e4 2777 unsigned int i;
406874a7
JP		 2778 u32 cmd_length = 0;
2779 u16 ipcse = 0, tucse, mss;
2780 u8 ipcss, ipcso, tucss, tucso, hdr_len;
1da177e4
LT		 2781 int err;
2782
89114afd 2783 if (skb_is_gso(skb)) {
1da177e4
LT		 2784 if (skb_header_cloned(skb)) {
2785 err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
2786 if (err)
2787 return err;
2788 }
2789
ab6a5bb6 2790 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
7967168c 2791 mss = skb_shinfo(skb)->gso_size;
60828236 2792 if (skb->protocol == htons(ETH_P_IP)) {
eddc9ec5
ACM		 2793 struct iphdr *iph = ip_hdr(skb);
2794 iph->tot_len = 0;
2795 iph->check = 0;
aa8223c7
ACM		 2796 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2797 iph->daddr, 0,
2798 IPPROTO_TCP,
2799 0);
2d7edb92 2800 cmd_length = E1000_TXD_CMD_IP;
ea2ae17d 2801 ipcse = skb_transport_offset(skb) - 1;
e15fdd03 2802 } else if (skb->protocol == htons(ETH_P_IPV6)) {
0660e03f 2803 ipv6_hdr(skb)->payload_len = 0;
aa8223c7 2804 tcp_hdr(skb)->check =
0660e03f
ACM		 2805 ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
2806 &ipv6_hdr(skb)->daddr,
2807 0, IPPROTO_TCP, 0);
2d7edb92 2808 ipcse = 0;
2d7edb92 2809 }
bbe735e4 2810 ipcss = skb_network_offset(skb);
eddc9ec5 2811 ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
ea2ae17d 2812 tucss = skb_transport_offset(skb);
aa8223c7 2813 tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
1da177e4
LT		 2814 tucse = 0;
2815
2816 cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
2d7edb92 2817 E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
1da177e4 2818
581d708e
MC		 2819 i = tx_ring->next_to_use;
2820 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
545c67c0 2821 buffer_info = &tx_ring->buffer_info[i];
1da177e4
LT		 2822
2823 context_desc->lower_setup.ip_fields.ipcss = ipcss;
2824 context_desc->lower_setup.ip_fields.ipcso = ipcso;
2825 context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
2826 context_desc->upper_setup.tcp_fields.tucss = tucss;
2827 context_desc->upper_setup.tcp_fields.tucso = tucso;
2828 context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
2829 context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
2830 context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
2831 context_desc->cmd_and_length = cpu_to_le32(cmd_length);
2832
545c67c0 2833 buffer_info->time_stamp = jiffies;
a9ebadd6 2834 buffer_info->next_to_watch = i;
545c67c0 2835
581d708e
MC		 2836 if (++i == tx_ring->count) i = 0;
2837 tx_ring->next_to_use = i;
1da177e4 2838
c3033b01 2839 return true;
1da177e4 2840 }
c3033b01 2841 return false;
1da177e4
LT		 2842}
2843
64798845
JP		 2844static bool e1000_tx_csum(struct e1000_adapter *adapter,
2845 struct e1000_tx_ring *tx_ring, struct sk_buff *skb)
1da177e4
LT		 2846{
2847 struct e1000_context_desc *context_desc;
545c67c0 2848 struct e1000_buffer *buffer_info;
1da177e4 2849 unsigned int i;
406874a7 2850 u8 css;
3ed30676 2851 u32 cmd_len = E1000_TXD_CMD_DEXT;
1da177e4 2852
3ed30676
DG		 2853 if (skb->ip_summed != CHECKSUM_PARTIAL)
2854 return false;
1da177e4 2855
3ed30676 2856 switch (skb->protocol) {
09640e63 2857 case cpu_to_be16(ETH_P_IP):
3ed30676
DG		 2858 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
2859 cmd_len |= E1000_TXD_CMD_TCP;
2860 break;
09640e63 2861 case cpu_to_be16(ETH_P_IPV6):
3ed30676
DG		 2862 /* XXX not handling all IPV6 headers */
2863 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
2864 cmd_len |= E1000_TXD_CMD_TCP;
2865 break;
2866 default:
2867 if (unlikely(net_ratelimit()))
2868 DPRINTK(DRV, WARNING,
2869 "checksum_partial proto=%x!\n", skb->protocol);
2870 break;
2871 }
1da177e4 2872
3ed30676 2873 css = skb_transport_offset(skb);
1da177e4 2874
3ed30676
DG		 2875 i = tx_ring->next_to_use;
2876 buffer_info = &tx_ring->buffer_info[i];
2877 context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
545c67c0 2878
3ed30676
DG		 2879 context_desc->lower_setup.ip_config = 0;
2880 context_desc->upper_setup.tcp_fields.tucss = css;
2881 context_desc->upper_setup.tcp_fields.tucso =
2882 css + skb->csum_offset;
2883 context_desc->upper_setup.tcp_fields.tucse = 0;
2884 context_desc->tcp_seg_setup.data = 0;
2885 context_desc->cmd_and_length = cpu_to_le32(cmd_len);
1da177e4 2886
3ed30676
DG		 2887 buffer_info->time_stamp = jiffies;
2888 buffer_info->next_to_watch = i;
1da177e4 2889
3ed30676
DG		 2890 if (unlikely(++i == tx_ring->count)) i = 0;
2891 tx_ring->next_to_use = i;
2892
2893 return true;
1da177e4
LT		 2894}
2895
2896#define E1000_MAX_TXD_PWR 12
2897#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
2898
64798845
JP		 2899static int e1000_tx_map(struct e1000_adapter *adapter,
2900 struct e1000_tx_ring *tx_ring,
2901 struct sk_buff *skb, unsigned int first,
2902 unsigned int max_per_txd, unsigned int nr_frags,
2903 unsigned int mss)
1da177e4 2904{
1dc32918 2905 struct e1000_hw *hw = &adapter->hw;
d20b606c
JB		 2906 unsigned int len = skb_headlen(skb);
2907 unsigned int offset, size, count = 0, i;
1da177e4 2908 unsigned int f;
d20b606c 2909 dma_addr_t map;
1da177e4
LT		 2910
2911 i = tx_ring->next_to_use;
2912
d20b606c
JB		 2913 if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) {
2914 dev_err(&adapter->pdev->dev, "TX DMA map failed\n");
2915 dev_kfree_skb(skb);
2916 return -2;
2917 }
2918
2919 map = skb_shinfo(skb)->dma_maps[0];
2920 offset = 0;
2921
96838a40 2922 while (len) {
d20b606c 2923 struct e1000_buffer *buffer_info = &tx_ring->buffer_info[i];
1da177e4 2924 size = min(len, max_per_txd);
fd803241
JK		 2925 /* Workaround for Controller erratum --
2926 * descriptor for non-tso packet in a linear SKB that follows a
2927 * tso gets written back prematurely before the data is fully
0f15a8fa 2928 * DMA'd to the controller */
fd803241 2929 if (!skb->data_len && tx_ring->last_tx_tso &&
89114afd 2930 !skb_is_gso(skb)) {
fd803241
JK		 2931 tx_ring->last_tx_tso = 0;
2932 size -= 4;
2933 }
2934
1da177e4
LT		 2935 /* Workaround for premature desc write-backs
2936 * in TSO mode. Append 4-byte sentinel desc */
96838a40 2937 if (unlikely(mss && !nr_frags && size == len && size > 8))
1da177e4 2938 size -= 4;
97338bde
MC		 2939 /* work-around for errata 10 and it applies
2940 * to all controllers in PCI-X mode
2941 * The fix is to make sure that the first descriptor of a
2942 * packet is smaller than 2048 - 16 - 16 (or 2016) bytes
2943 */
1dc32918 2944 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
97338bde
MC		 2945 (size > 2015) && count == 0))
2946 size = 2015;
96838a40 2947
1da177e4
LT		 2948 /* Workaround for potential 82544 hang in PCI-X. Avoid
2949 * terminating buffers within evenly-aligned dwords. */
96838a40 2950 if (unlikely(adapter->pcix_82544 &&
1da177e4
LT		 2951 !((unsigned long)(skb->data + offset + size - 1) & 4) &&
2952 size > 4))
2953 size -= 4;
2954
2955 buffer_info->length = size;
d20b606c 2956 buffer_info->dma = map + offset;
1da177e4 2957 buffer_info->time_stamp = jiffies;
a9ebadd6 2958 buffer_info->next_to_watch = i;
1da177e4
LT		 2959
2960 len -= size;
2961 offset += size;
2962 count++;
96838a40 2963 if (unlikely(++i == tx_ring->count)) i = 0;
1da177e4
LT		 2964 }
2965
96838a40 2966 for (f = 0; f < nr_frags; f++) {
1da177e4
LT		 2967 struct skb_frag_struct *frag;
2968
2969 frag = &skb_shinfo(skb)->frags[f];
2970 len = frag->size;
d20b606c
JB		 2971 map = skb_shinfo(skb)->dma_maps[f + 1];
2972 offset = 0;
1da177e4 2973
96838a40 2974 while (len) {
d20b606c 2975 struct e1000_buffer *buffer_info;
1da177e4
LT		 2976 buffer_info = &tx_ring->buffer_info[i];
2977 size = min(len, max_per_txd);
1da177e4
LT		 2978 /* Workaround for premature desc write-backs
2979 * in TSO mode. Append 4-byte sentinel desc */
96838a40 2980 if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
1da177e4 2981 size -= 4;
1da177e4
LT		 2982 /* Workaround for potential 82544 hang in PCI-X.
2983 * Avoid terminating buffers within evenly-aligned
2984 * dwords. */
96838a40 2985 if (unlikely(adapter->pcix_82544 &&
1da177e4
LT		 2986 !((unsigned long)(frag->page+offset+size-1) & 4) &&
2987 size > 4))
2988 size -= 4;
2989
2990 buffer_info->length = size;
d20b606c 2991 buffer_info->dma = map + offset;
1da177e4 2992 buffer_info->time_stamp = jiffies;
a9ebadd6 2993 buffer_info->next_to_watch = i;
1da177e4
LT		 2994
2995 len -= size;
2996 offset += size;
2997 count++;
96838a40 2998 if (unlikely(++i == tx_ring->count)) i = 0;
1da177e4
LT		 2999 }
3000 }
3001
3002 i = (i == 0) ? tx_ring->count - 1 : i - 1;
3003 tx_ring->buffer_info[i].skb = skb;
3004 tx_ring->buffer_info[first].next_to_watch = i;
d20b606c 3005 smp_wmb();
1da177e4
LT		 3006
3007 return count;
3008}
3009
64798845
JP		 3010static void e1000_tx_queue(struct e1000_adapter *adapter,
3011 struct e1000_tx_ring *tx_ring, int tx_flags,
3012 int count)
1da177e4 3013{
1dc32918 3014 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 3015 struct e1000_tx_desc *tx_desc = NULL;
3016 struct e1000_buffer *buffer_info;
406874a7 3017 u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
1da177e4
LT		 3018 unsigned int i;
3019
96838a40 3020 if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
1da177e4
LT		 3021 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
3022 E1000_TXD_CMD_TSE;
2d7edb92
MC		 3023 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3024
96838a40 3025 if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
2d7edb92 3026 txd_upper |= E1000_TXD_POPTS_IXSM << 8;
1da177e4
LT		 3027 }
3028
96838a40 3029 if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
1da177e4
LT		 3030 txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
3031 txd_upper |= E1000_TXD_POPTS_TXSM << 8;
3032 }
3033
96838a40 3034 if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
1da177e4
LT		 3035 txd_lower |= E1000_TXD_CMD_VLE;
3036 txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
3037 }
3038
3039 i = tx_ring->next_to_use;
3040
96838a40 3041 while (count--) {
1da177e4
LT		 3042 buffer_info = &tx_ring->buffer_info[i];
3043 tx_desc = E1000_TX_DESC(*tx_ring, i);
3044 tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
3045 tx_desc->lower.data =
3046 cpu_to_le32(txd_lower | buffer_info->length);
3047 tx_desc->upper.data = cpu_to_le32(txd_upper);
96838a40 3048 if (unlikely(++i == tx_ring->count)) i = 0;
1da177e4
LT		 3049 }
3050
3051 tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
3052
3053 /* Force memory writes to complete before letting h/w
3054 * know there are new descriptors to fetch. (Only
3055 * applicable for weak-ordered memory model archs,
3056 * such as IA-64). */
3057 wmb();
3058
3059 tx_ring->next_to_use = i;
1dc32918 3060 writel(i, hw->hw_addr + tx_ring->tdt);
2ce9047f
JB		 3061 /* we need this if more than one processor can write to our tail
3062 * at a time, it syncronizes IO on IA64/Altix systems */
3063 mmiowb();
1da177e4
LT		 3064}
3065
3066/**
3067 * 82547 workaround to avoid controller hang in half-duplex environment.
3068 * The workaround is to avoid queuing a large packet that would span
3069 * the internal Tx FIFO ring boundary by notifying the stack to resend
3070 * the packet at a later time. This gives the Tx FIFO an opportunity to
3071 * flush all packets. When that occurs, we reset the Tx FIFO pointers
3072 * to the beginning of the Tx FIFO.
3073 **/
3074
3075#define E1000_FIFO_HDR 0x10
3076#define E1000_82547_PAD_LEN 0x3E0
3077
64798845
JP		 3078static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
3079 struct sk_buff *skb)
1da177e4 3080{
406874a7
JP		 3081 u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
3082 u32 skb_fifo_len = skb->len + E1000_FIFO_HDR;
1da177e4 3083
9099cfb9 3084 skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
1da177e4 3085
96838a40 3086 if (adapter->link_duplex != HALF_DUPLEX)
1da177e4
LT		 3087 goto no_fifo_stall_required;
3088
96838a40 3089 if (atomic_read(&adapter->tx_fifo_stall))
1da177e4
LT		 3090 return 1;
3091
96838a40 3092 if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
1da177e4
LT		 3093 atomic_set(&adapter->tx_fifo_stall, 1);
3094 return 1;
3095 }
3096
3097no_fifo_stall_required:
3098 adapter->tx_fifo_head += skb_fifo_len;
96838a40 3099 if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
1da177e4
LT		 3100 adapter->tx_fifo_head -= adapter->tx_fifo_size;
3101 return 0;
3102}
3103
2d7edb92 3104#define MINIMUM_DHCP_PACKET_SIZE 282
64798845
JP		 3105static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
3106 struct sk_buff *skb)
2d7edb92
MC		 3107{
3108 struct e1000_hw *hw = &adapter->hw;
406874a7 3109 u16 length, offset;
96838a40 3110 if (vlan_tx_tag_present(skb)) {
1dc32918
JP		 3111 if (!((vlan_tx_tag_get(skb) == hw->mng_cookie.vlan_id) &&
3112 ( hw->mng_cookie.status &
2d7edb92
MC		 3113 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
3114 return 0;
3115 }
20a44028 3116 if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
e982f17c 3117 struct ethhdr *eth = (struct ethhdr *)skb->data;
96838a40
JB		 3118 if ((htons(ETH_P_IP) == eth->h_proto)) {
3119 const struct iphdr *ip =
406874a7 3120 (struct iphdr *)((u8 *)skb->data+14);
96838a40
JB		 3121 if (IPPROTO_UDP == ip->protocol) {
3122 struct udphdr *udp =
406874a7 3123 (struct udphdr *)((u8 *)ip +
2d7edb92 3124 (ip->ihl << 2));
96838a40 3125 if (ntohs(udp->dest) == 67) {
406874a7 3126 offset = (u8 *)udp + 8 - skb->data;
2d7edb92
MC		 3127 length = skb->len - offset;
3128
3129 return e1000_mng_write_dhcp_info(hw,
406874a7 3130 (u8 *)udp + 8,
2d7edb92
MC		 3131 length);
3132 }
3133 }
3134 }
3135 }
3136 return 0;
3137}
3138
65c7973f
JB		 3139static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
3140{
3141 struct e1000_adapter *adapter = netdev_priv(netdev);
3142 struct e1000_tx_ring *tx_ring = adapter->tx_ring;
3143
3144 netif_stop_queue(netdev);
3145 /* Herbert's original patch had:
3146 * smp_mb__after_netif_stop_queue();
3147 * but since that doesn't exist yet, just open code it. */
3148 smp_mb();
3149
3150 /* We need to check again in a case another CPU has just
3151 * made room available. */
3152 if (likely(E1000_DESC_UNUSED(tx_ring) < size))
3153 return -EBUSY;
3154
3155 /* A reprieve! */
3156 netif_start_queue(netdev);
fcfb1224 3157 ++adapter->restart_queue;
65c7973f
JB		 3158 return 0;
3159}
3160
3161static int e1000_maybe_stop_tx(struct net_device *netdev,
3162 struct e1000_tx_ring *tx_ring, int size)
3163{
3164 if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
3165 return 0;
3166 return __e1000_maybe_stop_tx(netdev, size);
3167}
3168
1da177e4 3169#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
64798845 3170static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
1da177e4 3171{
60490fe0 3172 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 3173 struct e1000_hw *hw = &adapter->hw;
581d708e 3174 struct e1000_tx_ring *tx_ring;
1da177e4
LT		 3175 unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
3176 unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
3177 unsigned int tx_flags = 0;
6d1e3aa7 3178 unsigned int len = skb->len - skb->data_len;
6d1e3aa7
KK		 3179 unsigned int nr_frags;
3180 unsigned int mss;
1da177e4 3181 int count = 0;
76c224bc 3182 int tso;
1da177e4 3183 unsigned int f;
1da177e4 3184
65c7973f
JB		 3185 /* This goes back to the question of how to logically map a tx queue
3186 * to a flow. Right now, performance is impacted slightly negatively
3187 * if using multiple tx queues. If the stack breaks away from a
3188 * single qdisc implementation, we can look at this again. */
581d708e 3189 tx_ring = adapter->tx_ring;
24025e4e 3190
581d708e 3191 if (unlikely(skb->len <= 0)) {
1da177e4
LT		 3192 dev_kfree_skb_any(skb);
3193 return NETDEV_TX_OK;
3194 }
3195
032fe6e9
JB		 3196 /* 82571 and newer doesn't need the workaround that limited descriptor
3197 * length to 4kB */
1dc32918 3198 if (hw->mac_type >= e1000_82571)
032fe6e9
JB		 3199 max_per_txd = 8192;
3200
7967168c 3201 mss = skb_shinfo(skb)->gso_size;
76c224bc 3202 /* The controller does a simple calculation to
1da177e4
LT		 3203 * make sure there is enough room in the FIFO before
3204 * initiating the DMA for each buffer. The calc is:
3205 * 4 = ceil(buffer len/mss). To make sure we don't
3206 * overrun the FIFO, adjust the max buffer len if mss
3207 * drops. */
96838a40 3208 if (mss) {
406874a7 3209 u8 hdr_len;
1da177e4
LT		 3210 max_per_txd = min(mss << 2, max_per_txd);
3211 max_txd_pwr = fls(max_per_txd) - 1;
9a3056da 3212
90fb5135
AK		 3213 /* TSO Workaround for 82571/2/3 Controllers -- if skb->data
3214 * points to just header, pull a few bytes of payload from
3215 * frags into skb->data */
ab6a5bb6 3216 hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
6d1e3aa7 3217 if (skb->data_len && hdr_len == len) {
1dc32918 3218 switch (hw->mac_type) {
9f687888 3219 unsigned int pull_size;
683a2aa3
HX		 3220 case e1000_82544:
3221 /* Make sure we have room to chop off 4 bytes,
3222 * and that the end alignment will work out to
3223 * this hardware's requirements
3224 * NOTE: this is a TSO only workaround
3225 * if end byte alignment not correct move us
3226 * into the next dword */
27a884dc 3227 if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4)
683a2aa3
HX		 3228 break;
3229 /* fall through */
9f687888
JK		 3230 case e1000_82571:
3231 case e1000_82572:
3232 case e1000_82573:
cd94dd0b 3233 case e1000_ich8lan:
9f687888
JK		 3234 pull_size = min((unsigned int)4, skb->data_len);
3235 if (!__pskb_pull_tail(skb, pull_size)) {
a5eafce2 3236 DPRINTK(DRV, ERR,
9f687888
JK		 3237 "__pskb_pull_tail failed.\n");
3238 dev_kfree_skb_any(skb);
749dfc70 3239 return NETDEV_TX_OK;
9f687888
JK		 3240 }
3241 len = skb->len - skb->data_len;
3242 break;
3243 default:
3244 /* do nothing */
3245 break;
d74bbd3b 3246 }
9a3056da 3247 }
1da177e4
LT		 3248 }
3249
9a3056da 3250 /* reserve a descriptor for the offload context */
84fa7933 3251 if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
1da177e4 3252 count++;
2648345f 3253 count++;
fd803241 3254
fd803241 3255 /* Controller Erratum workaround */
89114afd 3256 if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
fd803241 3257 count++;
fd803241 3258
1da177e4
LT		 3259 count += TXD_USE_COUNT(len, max_txd_pwr);
3260
96838a40 3261 if (adapter->pcix_82544)
1da177e4
LT		 3262 count++;
3263
96838a40 3264 /* work-around for errata 10 and it applies to all controllers
97338bde
MC		 3265 * in PCI-X mode, so add one more descriptor to the count
3266 */
1dc32918 3267 if (unlikely((hw->bus_type == e1000_bus_type_pcix) &&
97338bde
MC		 3268 (len > 2015)))
3269 count++;
3270
1da177e4 3271 nr_frags = skb_shinfo(skb)->nr_frags;
96838a40 3272 for (f = 0; f < nr_frags; f++)
1da177e4
LT		 3273 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
3274 max_txd_pwr);
96838a40 3275 if (adapter->pcix_82544)
1da177e4
LT		 3276 count += nr_frags;
3277
0f15a8fa 3278
1dc32918
JP		 3279 if (hw->tx_pkt_filtering &&
3280 (hw->mac_type == e1000_82573))
2d7edb92
MC		 3281 e1000_transfer_dhcp_info(adapter, skb);
3282
1da177e4
LT		 3283 /* need: count + 2 desc gap to keep tail from touching
3284 * head, otherwise try next time */
8017943e 3285 if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2)))
1da177e4 3286 return NETDEV_TX_BUSY;
1da177e4 3287
1dc32918 3288 if (unlikely(hw->mac_type == e1000_82547)) {
96838a40 3289 if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
1da177e4 3290 netif_stop_queue(netdev);
1314bbf3 3291 mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
1da177e4
LT		 3292 return NETDEV_TX_BUSY;
3293 }
3294 }
3295
96838a40 3296 if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
1da177e4
LT		 3297 tx_flags |= E1000_TX_FLAGS_VLAN;
3298 tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
3299 }
3300
581d708e 3301 first = tx_ring->next_to_use;
96838a40 3302
581d708e 3303 tso = e1000_tso(adapter, tx_ring, skb);
1da177e4
LT		 3304 if (tso < 0) {
3305 dev_kfree_skb_any(skb);
3306 return NETDEV_TX_OK;
3307 }
3308
fd803241
JK		 3309 if (likely(tso)) {
3310 tx_ring->last_tx_tso = 1;
1da177e4 3311 tx_flags |= E1000_TX_FLAGS_TSO;
fd803241 3312 } else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
1da177e4
LT		 3313 tx_flags |= E1000_TX_FLAGS_CSUM;
3314
2d7edb92 3315 /* Old method was to assume IPv4 packet by default if TSO was enabled.
868d5309 3316 * 82571 hardware supports TSO capabilities for IPv6 as well...
2d7edb92 3317 * no longer assume, we must. */
60828236 3318 if (likely(skb->protocol == htons(ETH_P_IP)))
2d7edb92
MC		 3319 tx_flags |= E1000_TX_FLAGS_IPV4;
3320
581d708e
MC		 3321 e1000_tx_queue(adapter, tx_ring, tx_flags,
3322 e1000_tx_map(adapter, tx_ring, skb, first,
3323 max_per_txd, nr_frags, mss));
1da177e4
LT		 3324
3325 netdev->trans_start = jiffies;
3326
3327 /* Make sure there is space in the ring for the next send. */
65c7973f 3328 e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
1da177e4 3329
1da177e4
LT		 3330 return NETDEV_TX_OK;
3331}
3332
3333/**
3334 * e1000_tx_timeout - Respond to a Tx Hang
3335 * @netdev: network interface device structure
3336 **/
3337
64798845 3338static void e1000_tx_timeout(struct net_device *netdev)
1da177e4 3339{
60490fe0 3340 struct e1000_adapter *adapter = netdev_priv(netdev);
1da177e4
LT		 3341
3342 /* Do the reset outside of interrupt context */
87041639
JK		 3343 adapter->tx_timeout_count++;
3344 schedule_work(&adapter->reset_task);
1da177e4
LT		 3345}
3346
64798845 3347static void e1000_reset_task(struct work_struct *work)
1da177e4 3348{
65f27f38
DH		 3349 struct e1000_adapter *adapter =
3350 container_of(work, struct e1000_adapter, reset_task);
1da177e4 3351
2db10a08 3352 e1000_reinit_locked(adapter);
1da177e4
LT		 3353}
3354
3355/**
3356 * e1000_get_stats - Get System Network Statistics
3357 * @netdev: network interface device structure
3358 *
3359 * Returns the address of the device statistics structure.
3360 * The statistics are actually updated from the timer callback.
3361 **/
3362
64798845 3363static struct net_device_stats *e1000_get_stats(struct net_device *netdev)
1da177e4 3364{
60490fe0 3365 struct e1000_adapter *adapter = netdev_priv(netdev);
1da177e4 3366
6b7660cd 3367 /* only return the current stats */
1da177e4
LT		 3368 return &adapter->net_stats;
3369}
3370
3371/**
3372 * e1000_change_mtu - Change the Maximum Transfer Unit
3373 * @netdev: network interface device structure
3374 * @new_mtu: new value for maximum frame size
3375 *
3376 * Returns 0 on success, negative on failure
3377 **/
3378
64798845 3379static int e1000_change_mtu(struct net_device *netdev, int new_mtu)
1da177e4 3380{
60490fe0 3381 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 3382 struct e1000_hw *hw = &adapter->hw;
1da177e4 3383 int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
406874a7 3384 u16 eeprom_data = 0;
1da177e4 3385
96838a40
JB		 3386 if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
3387 (max_frame > MAX_JUMBO_FRAME_SIZE)) {
3388 DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
1da177e4 3389 return -EINVAL;
2d7edb92 3390 }
1da177e4 3391
997f5cbd 3392 /* Adapter-specific max frame size limits. */
1dc32918 3393 switch (hw->mac_type) {
9e2feace 3394 case e1000_undefined ... e1000_82542_rev2_1:
cd94dd0b 3395 case e1000_ich8lan:
997f5cbd
JK		 3396 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3397 DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
2d7edb92 3398 return -EINVAL;
2d7edb92 3399 }
997f5cbd 3400 break;
85b22eb6 3401 case e1000_82573:
249d71d6
BA		 3402 /* Jumbo Frames not supported if:
3403 * - this is not an 82573L device
3404 * - ASPM is enabled in any way (0x1A bits 3:2) */
1dc32918 3405 e1000_read_eeprom(hw, EEPROM_INIT_3GIO_3, 1,
85b22eb6 3406 &eeprom_data);
1dc32918 3407 if ((hw->device_id != E1000_DEV_ID_82573L) ||
249d71d6 3408 (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
85b22eb6
JK		 3409 if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
3410 DPRINTK(PROBE, ERR,
3411 "Jumbo Frames not supported.\n");
3412 return -EINVAL;
3413 }
3414 break;
3415 }
249d71d6
BA		 3416 /* ERT will be enabled later to enable wire speed receives */
3417
85b22eb6 3418 /* fall through to get support */
997f5cbd
JK		 3419 case e1000_82571:
3420 case e1000_82572:
87041639 3421 case e1000_80003es2lan:
997f5cbd
JK		 3422#define MAX_STD_JUMBO_FRAME_SIZE 9234
3423 if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
3424 DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
3425 return -EINVAL;
3426 }
3427 break;
3428 default:
3429 /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
3430 break;
1da177e4
LT		 3431 }
3432
87f5032e 3433 /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
9e2feace
AK		 3434 * means we reserve 2 more, this pushes us to allocate from the next
3435 * larger slab size
3436 * i.e. RXBUFFER_2048 --> size-4096 slab */
3437
3438 if (max_frame <= E1000_RXBUFFER_256)
3439 adapter->rx_buffer_len = E1000_RXBUFFER_256;
3440 else if (max_frame <= E1000_RXBUFFER_512)
3441 adapter->rx_buffer_len = E1000_RXBUFFER_512;
3442 else if (max_frame <= E1000_RXBUFFER_1024)
3443 adapter->rx_buffer_len = E1000_RXBUFFER_1024;
3444 else if (max_frame <= E1000_RXBUFFER_2048)
3445 adapter->rx_buffer_len = E1000_RXBUFFER_2048;
3446 else if (max_frame <= E1000_RXBUFFER_4096)
3447 adapter->rx_buffer_len = E1000_RXBUFFER_4096;
3448 else if (max_frame <= E1000_RXBUFFER_8192)
3449 adapter->rx_buffer_len = E1000_RXBUFFER_8192;
3450 else if (max_frame <= E1000_RXBUFFER_16384)
3451 adapter->rx_buffer_len = E1000_RXBUFFER_16384;
3452
3453 /* adjust allocation if LPE protects us, and we aren't using SBP */
1dc32918 3454 if (!hw->tbi_compatibility_on &&
9e2feace
AK		 3455 ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
3456 (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
3457 adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
997f5cbd 3458
2d7edb92 3459 netdev->mtu = new_mtu;
1dc32918 3460 hw->max_frame_size = max_frame;
2d7edb92 3461
2db10a08
AK		 3462 if (netif_running(netdev))
3463 e1000_reinit_locked(adapter);
1da177e4 3464
1da177e4
LT		 3465 return 0;
3466}
3467
3468/**
3469 * e1000_update_stats - Update the board statistics counters
3470 * @adapter: board private structure
3471 **/
3472
64798845 3473void e1000_update_stats(struct e1000_adapter *adapter)
1da177e4
LT		 3474{
3475 struct e1000_hw *hw = &adapter->hw;
282f33c9 3476 struct pci_dev *pdev = adapter->pdev;
1da177e4 3477 unsigned long flags;
406874a7 3478 u16 phy_tmp;
1da177e4
LT		 3479
3480#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
3481
282f33c9
LV		 3482 /*
3483 * Prevent stats update while adapter is being reset, or if the pci
3484 * connection is down.
3485 */
9026729b 3486 if (adapter->link_speed == 0)
282f33c9 3487 return;
81b1955e 3488 if (pci_channel_offline(pdev))
9026729b
AK		 3489 return;
3490
1da177e4
LT		 3491 spin_lock_irqsave(&adapter->stats_lock, flags);
3492
828d055f 3493 /* these counters are modified from e1000_tbi_adjust_stats,
1da177e4
LT		 3494 * called from the interrupt context, so they must only
3495 * be written while holding adapter->stats_lock
3496 */
3497
1dc32918
JP		 3498 adapter->stats.crcerrs += er32(CRCERRS);
3499 adapter->stats.gprc += er32(GPRC);
3500 adapter->stats.gorcl += er32(GORCL);
3501 adapter->stats.gorch += er32(GORCH);
3502 adapter->stats.bprc += er32(BPRC);
3503 adapter->stats.mprc += er32(MPRC);
3504 adapter->stats.roc += er32(ROC);
3505
3506 if (hw->mac_type != e1000_ich8lan) {
3507 adapter->stats.prc64 += er32(PRC64);
3508 adapter->stats.prc127 += er32(PRC127);
3509 adapter->stats.prc255 += er32(PRC255);
3510 adapter->stats.prc511 += er32(PRC511);
3511 adapter->stats.prc1023 += er32(PRC1023);
3512 adapter->stats.prc1522 += er32(PRC1522);
3513 }
3514
3515 adapter->stats.symerrs += er32(SYMERRS);
3516 adapter->stats.mpc += er32(MPC);
3517 adapter->stats.scc += er32(SCC);
3518 adapter->stats.ecol += er32(ECOL);
3519 adapter->stats.mcc += er32(MCC);
3520 adapter->stats.latecol += er32(LATECOL);
3521 adapter->stats.dc += er32(DC);
3522 adapter->stats.sec += er32(SEC);
3523 adapter->stats.rlec += er32(RLEC);
3524 adapter->stats.xonrxc += er32(XONRXC);
3525 adapter->stats.xontxc += er32(XONTXC);
3526 adapter->stats.xoffrxc += er32(XOFFRXC);
3527 adapter->stats.xofftxc += er32(XOFFTXC);
3528 adapter->stats.fcruc += er32(FCRUC);
3529 adapter->stats.gptc += er32(GPTC);
3530 adapter->stats.gotcl += er32(GOTCL);
3531 adapter->stats.gotch += er32(GOTCH);
3532 adapter->stats.rnbc += er32(RNBC);
3533 adapter->stats.ruc += er32(RUC);
3534 adapter->stats.rfc += er32(RFC);
3535 adapter->stats.rjc += er32(RJC);
3536 adapter->stats.torl += er32(TORL);
3537 adapter->stats.torh += er32(TORH);
3538 adapter->stats.totl += er32(TOTL);
3539 adapter->stats.toth += er32(TOTH);
3540 adapter->stats.tpr += er32(TPR);
3541
3542 if (hw->mac_type != e1000_ich8lan) {
3543 adapter->stats.ptc64 += er32(PTC64);
3544 adapter->stats.ptc127 += er32(PTC127);
3545 adapter->stats.ptc255 += er32(PTC255);
3546 adapter->stats.ptc511 += er32(PTC511);
3547 adapter->stats.ptc1023 += er32(PTC1023);
3548 adapter->stats.ptc1522 += er32(PTC1522);
3549 }
3550
3551 adapter->stats.mptc += er32(MPTC);
3552 adapter->stats.bptc += er32(BPTC);
1da177e4
LT		 3553
3554 /* used for adaptive IFS */
3555
1dc32918 3556 hw->tx_packet_delta = er32(TPT);
1da177e4 3557 adapter->stats.tpt += hw->tx_packet_delta;
1dc32918 3558 hw->collision_delta = er32(COLC);
1da177e4
LT		 3559 adapter->stats.colc += hw->collision_delta;
3560
96838a40 3561 if (hw->mac_type >= e1000_82543) {
1dc32918
JP		 3562 adapter->stats.algnerrc += er32(ALGNERRC);
3563 adapter->stats.rxerrc += er32(RXERRC);
3564 adapter->stats.tncrs += er32(TNCRS);
3565 adapter->stats.cexterr += er32(CEXTERR);
3566 adapter->stats.tsctc += er32(TSCTC);
3567 adapter->stats.tsctfc += er32(TSCTFC);
1da177e4 3568 }
96838a40 3569 if (hw->mac_type > e1000_82547_rev_2) {
1dc32918
JP		 3570 adapter->stats.iac += er32(IAC);
3571 adapter->stats.icrxoc += er32(ICRXOC);
3572
3573 if (hw->mac_type != e1000_ich8lan) {
3574 adapter->stats.icrxptc += er32(ICRXPTC);
3575 adapter->stats.icrxatc += er32(ICRXATC);
3576 adapter->stats.ictxptc += er32(ICTXPTC);
3577 adapter->stats.ictxatc += er32(ICTXATC);
3578 adapter->stats.ictxqec += er32(ICTXQEC);
3579 adapter->stats.ictxqmtc += er32(ICTXQMTC);
3580 adapter->stats.icrxdmtc += er32(ICRXDMTC);
cd94dd0b 3581 }
2d7edb92 3582 }
1da177e4
LT		 3583
3584 /* Fill out the OS statistics structure */
1da177e4
LT		 3585 adapter->net_stats.multicast = adapter->stats.mprc;
3586 adapter->net_stats.collisions = adapter->stats.colc;
3587
3588 /* Rx Errors */
3589
87041639
JK		 3590 /* RLEC on some newer hardware can be incorrect so build
3591 * our own version based on RUC and ROC */
1da177e4
LT		 3592 adapter->net_stats.rx_errors = adapter->stats.rxerrc +
3593 adapter->stats.crcerrs + adapter->stats.algnerrc +
87041639
JK		 3594 adapter->stats.ruc + adapter->stats.roc +
3595 adapter->stats.cexterr;
49559854
MW		 3596 adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
3597 adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
1da177e4
LT		 3598 adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
3599 adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
1da177e4
LT		 3600 adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
3601
3602 /* Tx Errors */
49559854
MW		 3603 adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
3604 adapter->net_stats.tx_errors = adapter->stats.txerrc;
1da177e4
LT		 3605 adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
3606 adapter->net_stats.tx_window_errors = adapter->stats.latecol;
3607 adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
1dc32918 3608 if (hw->bad_tx_carr_stats_fd &&
167fb284
JG		 3609 adapter->link_duplex == FULL_DUPLEX) {
3610 adapter->net_stats.tx_carrier_errors = 0;
3611 adapter->stats.tncrs = 0;
3612 }
1da177e4
LT		 3613
3614 /* Tx Dropped needs to be maintained elsewhere */
3615
3616 /* Phy Stats */
96838a40
JB		 3617 if (hw->media_type == e1000_media_type_copper) {
3618 if ((adapter->link_speed == SPEED_1000) &&
1da177e4
LT		 3619 (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
3620 phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
3621 adapter->phy_stats.idle_errors += phy_tmp;
3622 }
3623
96838a40 3624 if ((hw->mac_type <= e1000_82546) &&
1da177e4
LT		 3625 (hw->phy_type == e1000_phy_m88) &&
3626 !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
3627 adapter->phy_stats.receive_errors += phy_tmp;
3628 }
3629
15e376b4 3630 /* Management Stats */
1dc32918
JP		 3631 if (hw->has_smbus) {
3632 adapter->stats.mgptc += er32(MGTPTC);
3633 adapter->stats.mgprc += er32(MGTPRC);
3634 adapter->stats.mgpdc += er32(MGTPDC);
15e376b4
JG		 3635 }
3636
1da177e4
LT		 3637 spin_unlock_irqrestore(&adapter->stats_lock, flags);
3638}
9ac98284
JB		 3639
3640/**
3641 * e1000_intr_msi - Interrupt Handler
3642 * @irq: interrupt number
3643 * @data: pointer to a network interface device structure
3644 **/
3645
64798845 3646static irqreturn_t e1000_intr_msi(int irq, void *data)
9ac98284
JB		 3647{
3648 struct net_device *netdev = data;
3649 struct e1000_adapter *adapter = netdev_priv(netdev);
3650 struct e1000_hw *hw = &adapter->hw;
1dc32918 3651 u32 icr = er32(ICR);
9ac98284 3652
9150b76a
JB		 3653 /* in NAPI mode read ICR disables interrupts using IAM */
3654
b5fc8f0c
JB		 3655 if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
3656 hw->get_link_status = 1;
3657 /* 80003ES2LAN workaround-- For packet buffer work-around on
3658 * link down event; disable receives here in the ISR and reset
3659 * adapter in watchdog */
3660 if (netif_carrier_ok(netdev) &&
1dc32918 3661 (hw->mac_type == e1000_80003es2lan)) {
b5fc8f0c 3662 /* disable receives */
1dc32918
JP		 3663 u32 rctl = er32(RCTL);
3664 ew32(RCTL, rctl & ~E1000_RCTL_EN);
9ac98284 3665 }
b5fc8f0c
JB		 3666 /* guard against interrupt when we're going down */
3667 if (!test_bit(__E1000_DOWN, &adapter->flags))
3668 mod_timer(&adapter->watchdog_timer, jiffies + 1);
9ac98284
JB		 3669 }
3670
288379f0 3671 if (likely(napi_schedule_prep(&adapter->napi))) {
835bb129
JB		 3672 adapter->total_tx_bytes = 0;
3673 adapter->total_tx_packets = 0;
3674 adapter->total_rx_bytes = 0;
3675 adapter->total_rx_packets = 0;
288379f0 3676 __napi_schedule(&adapter->napi);
835bb129 3677 } else
9ac98284 3678 e1000_irq_enable(adapter);
9ac98284
JB		 3679
3680 return IRQ_HANDLED;
3681}
1da177e4
LT		 3682
3683/**
3684 * e1000_intr - Interrupt Handler
3685 * @irq: interrupt number
3686 * @data: pointer to a network interface device structure
1da177e4
LT		 3687 **/
3688
64798845 3689static irqreturn_t e1000_intr(int irq, void *data)
1da177e4
LT		 3690{
3691 struct net_device *netdev = data;
60490fe0 3692 struct e1000_adapter *adapter = netdev_priv(netdev);
1da177e4 3693 struct e1000_hw *hw = &adapter->hw;
1dc32918 3694 u32 rctl, icr = er32(ICR);
c3570acb 3695
15b2bee2 3696 if (unlikely((!icr) || test_bit(__E1000_RESETTING, &adapter->flags)))
835bb129
JB		 3697 return IRQ_NONE; /* Not our interrupt */
3698
835bb129
JB		 3699 /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
3700 * not set, then the adapter didn't send an interrupt */
3701 if (unlikely(hw->mac_type >= e1000_82571 &&
3702 !(icr & E1000_ICR_INT_ASSERTED)))
3703 return IRQ_NONE;
3704
9150b76a
JB		 3705 /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No
3706 * need for the IMC write */
1da177e4 3707
96838a40 3708 if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
1da177e4 3709 hw->get_link_status = 1;
87041639
JK		 3710 /* 80003ES2LAN workaround--
3711 * For packet buffer work-around on link down event;
3712 * disable receives here in the ISR and
3713 * reset adapter in watchdog
3714 */
3715 if (netif_carrier_ok(netdev) &&
1dc32918 3716 (hw->mac_type == e1000_80003es2lan)) {
87041639 3717 /* disable receives */
1dc32918
JP		 3718 rctl = er32(RCTL);
3719 ew32(RCTL, rctl & ~E1000_RCTL_EN);
87041639 3720 }
1314bbf3
AK		 3721 /* guard against interrupt when we're going down */
3722 if (!test_bit(__E1000_DOWN, &adapter->flags))
3723 mod_timer(&adapter->watchdog_timer, jiffies + 1);
1da177e4
LT		 3724 }
3725
1e613fd9 3726 if (unlikely(hw->mac_type < e1000_82571)) {
835bb129 3727 /* disable interrupts, without the synchronize_irq bit */
1dc32918
JP		 3728 ew32(IMC, ~0);
3729 E1000_WRITE_FLUSH();
1e613fd9 3730 }
288379f0 3731 if (likely(napi_schedule_prep(&adapter->napi))) {
835bb129
JB		 3732 adapter->total_tx_bytes = 0;
3733 adapter->total_tx_packets = 0;
3734 adapter->total_rx_bytes = 0;
3735 adapter->total_rx_packets = 0;
288379f0 3736 __napi_schedule(&adapter->napi);
835bb129 3737 } else
90fb5135
AK		 3738 /* this really should not happen! if it does it is basically a
3739 * bug, but not a hard error, so enable ints and continue */
581d708e 3740 e1000_irq_enable(adapter);
1da177e4 3741
1da177e4
LT		 3742 return IRQ_HANDLED;
3743}
3744
1da177e4
LT		 3745/**
3746 * e1000_clean - NAPI Rx polling callback
3747 * @adapter: board private structure
3748 **/
64798845 3749static int e1000_clean(struct napi_struct *napi, int budget)
1da177e4 3750{
bea3348e
SH		 3751 struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
3752 struct net_device *poll_dev = adapter->netdev;
d2c7ddd6 3753 int tx_cleaned = 0, work_done = 0;
581d708e 3754
4cf1653a 3755 adapter = netdev_priv(poll_dev);
581d708e 3756
8017943e 3757 tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]);
581d708e 3758
d3d9e484 3759 adapter->clean_rx(adapter, &adapter->rx_ring[0],
bea3348e 3760 &work_done, budget);
96838a40 3761
d2c7ddd6
DM		 3762 if (tx_cleaned)
3763 work_done = budget;
3764
53e52c72
DM		 3765 /* If budget not fully consumed, exit the polling mode */
3766 if (work_done < budget) {
835bb129
JB		 3767 if (likely(adapter->itr_setting & 3))
3768 e1000_set_itr(adapter);
288379f0 3769 napi_complete(napi);
1da177e4 3770 e1000_irq_enable(adapter);
1da177e4
LT		 3771 }
3772
bea3348e 3773 return work_done;
1da177e4
LT		 3774}
3775
1da177e4
LT		 3776/**
3777 * e1000_clean_tx_irq - Reclaim resources after transmit completes
3778 * @adapter: board private structure
3779 **/
64798845
JP		 3780static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
3781 struct e1000_tx_ring *tx_ring)
1da177e4 3782{
1dc32918 3783 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 3784 struct net_device *netdev = adapter->netdev;
3785 struct e1000_tx_desc *tx_desc, *eop_desc;
3786 struct e1000_buffer *buffer_info;
3787 unsigned int i, eop;
2a1af5d7 3788 unsigned int count = 0;
c3033b01 3789 bool cleaned = false;
835bb129 3790 unsigned int total_tx_bytes=0, total_tx_packets=0;
1da177e4
LT		 3791
3792 i = tx_ring->next_to_clean;
3793 eop = tx_ring->buffer_info[i].next_to_watch;
3794 eop_desc = E1000_TX_DESC(*tx_ring, eop);
3795
581d708e 3796 while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
c3033b01 3797 for (cleaned = false; !cleaned; ) {
1da177e4
LT		 3798 tx_desc = E1000_TX_DESC(*tx_ring, i);
3799 buffer_info = &tx_ring->buffer_info[i];
3800 cleaned = (i == eop);
3801
835bb129 3802 if (cleaned) {
2b65326e 3803 struct sk_buff *skb = buffer_info->skb;
7753b171
JB		 3804 unsigned int segs, bytecount;
3805 segs = skb_shinfo(skb)->gso_segs ?: 1;
3806 /* multiply data chunks by size of headers */
3807 bytecount = ((segs - 1) * skb_headlen(skb)) +
3808 skb->len;
2b65326e 3809 total_tx_packets += segs;
7753b171 3810 total_tx_bytes += bytecount;
835bb129 3811 }
fd803241 3812 e1000_unmap_and_free_tx_resource(adapter, buffer_info);
a9ebadd6 3813 tx_desc->upper.data = 0;
1da177e4 3814
96838a40 3815 if (unlikely(++i == tx_ring->count)) i = 0;
1da177e4 3816 }
581d708e 3817
1da177e4
LT		 3818 eop = tx_ring->buffer_info[i].next_to_watch;
3819 eop_desc = E1000_TX_DESC(*tx_ring, eop);
2a1af5d7
JK		 3820#define E1000_TX_WEIGHT 64
3821 /* weight of a sort for tx, to avoid endless transmit cleanup */
c3570acb
FR		 3822 if (count++ == E1000_TX_WEIGHT)
3823 break;
1da177e4
LT		 3824 }
3825
3826 tx_ring->next_to_clean = i;
3827
77b2aad5 3828#define TX_WAKE_THRESHOLD 32
65c7973f
JB		 3829 if (unlikely(cleaned && netif_carrier_ok(netdev) &&
3830 E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
3831 /* Make sure that anybody stopping the queue after this
3832 * sees the new next_to_clean.
3833 */
3834 smp_mb();
fcfb1224 3835 if (netif_queue_stopped(netdev)) {
77b2aad5 3836 netif_wake_queue(netdev);
fcfb1224
JB		 3837 ++adapter->restart_queue;
3838 }
77b2aad5 3839 }
2648345f 3840
581d708e 3841 if (adapter->detect_tx_hung) {
2648345f 3842 /* Detect a transmit hang in hardware, this serializes the
1da177e4 3843 * check with the clearing of time_stamp and movement of i */
c3033b01 3844 adapter->detect_tx_hung = false;
d20b606c
JB		 3845 /*
3846 * read barrier to make sure that the ->dma member and time
3847 * stamp are updated fully
3848 */
3849 smp_rmb();
392137fa
JK		 3850 if (tx_ring->buffer_info[eop].dma &&
3851 time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
7e6c9861 3852 (adapter->tx_timeout_factor * HZ))
1dc32918 3853 && !(er32(STATUS) & E1000_STATUS_TXOFF)) {
70b8f1e1
MC		 3854
3855 /* detected Tx unit hang */
c6963ef5 3856 DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
7bfa4816 3857 " Tx Queue <%lu>\n"
70b8f1e1
MC		 3858 " TDH <%x>\n"
3859 " TDT <%x>\n"
3860 " next_to_use <%x>\n"
3861 " next_to_clean <%x>\n"
3862 "buffer_info[next_to_clean]\n"
70b8f1e1
MC		 3863 " time_stamp <%lx>\n"
3864 " next_to_watch <%x>\n"
3865 " jiffies <%lx>\n"
3866 " next_to_watch.status <%x>\n",
7bfa4816
JK		 3867 (unsigned long)((tx_ring - adapter->tx_ring) /
3868 sizeof(struct e1000_tx_ring)),
1dc32918
JP		 3869 readl(hw->hw_addr + tx_ring->tdh),
3870 readl(hw->hw_addr + tx_ring->tdt),
70b8f1e1 3871 tx_ring->next_to_use,
392137fa
JK		 3872 tx_ring->next_to_clean,
3873 tx_ring->buffer_info[eop].time_stamp,
70b8f1e1
MC		 3874 eop,
3875 jiffies,
3876 eop_desc->upper.fields.status);
1da177e4 3877 netif_stop_queue(netdev);
70b8f1e1 3878 }
1da177e4 3879 }
835bb129
JB		 3880 adapter->total_tx_bytes += total_tx_bytes;
3881 adapter->total_tx_packets += total_tx_packets;
ef90e4ec
AK		 3882 adapter->net_stats.tx_bytes += total_tx_bytes;
3883 adapter->net_stats.tx_packets += total_tx_packets;
1da177e4
LT		 3884 return cleaned;
3885}
3886
3887/**
3888 * e1000_rx_checksum - Receive Checksum Offload for 82543
2d7edb92
MC		 3889 * @adapter: board private structure
3890 * @status_err: receive descriptor status and error fields
3891 * @csum: receive descriptor csum field
3892 * @sk_buff: socket buffer with received data
1da177e4
LT		 3893 **/
3894
64798845
JP		 3895static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err,
3896 u32 csum, struct sk_buff *skb)
1da177e4 3897{
1dc32918 3898 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 3899 u16 status = (u16)status_err;
3900 u8 errors = (u8)(status_err >> 24);
2d7edb92
MC		 3901 skb->ip_summed = CHECKSUM_NONE;
3902
1da177e4 3903 /* 82543 or newer only */
1dc32918 3904 if (unlikely(hw->mac_type < e1000_82543)) return;
1da177e4 3905 /* Ignore Checksum bit is set */
96838a40 3906 if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
2d7edb92 3907 /* TCP/UDP checksum error bit is set */
96838a40 3908 if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
1da177e4 3909 /* let the stack verify checksum errors */
1da177e4 3910 adapter->hw_csum_err++;
2d7edb92
MC		 3911 return;
3912 }
3913 /* TCP/UDP Checksum has not been calculated */
1dc32918 3914 if (hw->mac_type <= e1000_82547_rev_2) {
96838a40 3915 if (!(status & E1000_RXD_STAT_TCPCS))
2d7edb92 3916 return;
1da177e4 3917 } else {
96838a40 3918 if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
2d7edb92
MC		 3919 return;
3920 }
3921 /* It must be a TCP or UDP packet with a valid checksum */
3922 if (likely(status & E1000_RXD_STAT_TCPCS)) {
1da177e4
LT		 3923 /* TCP checksum is good */
3924 skb->ip_summed = CHECKSUM_UNNECESSARY;
1dc32918 3925 } else if (hw->mac_type > e1000_82547_rev_2) {
2d7edb92
MC		 3926 /* IP fragment with UDP payload */
3927 /* Hardware complements the payload checksum, so we undo it
3928 * and then put the value in host order for further stack use.
3929 */
3e18826c
AV		 3930 __sum16 sum = (__force __sum16)htons(csum);
3931 skb->csum = csum_unfold(~sum);
84fa7933 3932 skb->ip_summed = CHECKSUM_COMPLETE;
1da177e4 3933 }
2d7edb92 3934 adapter->hw_csum_good++;
1da177e4
LT		 3935}
3936
3937/**
2d7edb92 3938 * e1000_clean_rx_irq - Send received data up the network stack; legacy
1da177e4
LT		 3939 * @adapter: board private structure
3940 **/
64798845
JP		 3941static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
3942 struct e1000_rx_ring *rx_ring,
3943 int *work_done, int work_to_do)
1da177e4 3944{
1dc32918 3945 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 3946 struct net_device *netdev = adapter->netdev;
3947 struct pci_dev *pdev = adapter->pdev;
86c3d59f
JB		 3948 struct e1000_rx_desc *rx_desc, *next_rxd;
3949 struct e1000_buffer *buffer_info, *next_buffer;
1da177e4 3950 unsigned long flags;
406874a7
JP		 3951 u32 length;
3952 u8 last_byte;
1da177e4 3953 unsigned int i;
72d64a43 3954 int cleaned_count = 0;
c3033b01 3955 bool cleaned = false;
835bb129 3956 unsigned int total_rx_bytes=0, total_rx_packets=0;
1da177e4
LT		 3957
3958 i = rx_ring->next_to_clean;
3959 rx_desc = E1000_RX_DESC(*rx_ring, i);
b92ff8ee 3960 buffer_info = &rx_ring->buffer_info[i];
1da177e4 3961
b92ff8ee 3962 while (rx_desc->status & E1000_RXD_STAT_DD) {
24f476ee 3963 struct sk_buff *skb;
a292ca6e 3964 u8 status;
90fb5135 3965
96838a40 3966 if (*work_done >= work_to_do)
1da177e4
LT		 3967 break;
3968 (*work_done)++;
c3570acb 3969
a292ca6e 3970 status = rx_desc->status;
b92ff8ee 3971 skb = buffer_info->skb;
86c3d59f
JB		 3972 buffer_info->skb = NULL;
3973
30320be8
JK		 3974 prefetch(skb->data - NET_IP_ALIGN);
3975
86c3d59f
JB		 3976 if (++i == rx_ring->count) i = 0;
3977 next_rxd = E1000_RX_DESC(*rx_ring, i);
30320be8
JK		 3978 prefetch(next_rxd);
3979
86c3d59f 3980 next_buffer = &rx_ring->buffer_info[i];
86c3d59f 3981
c3033b01 3982 cleaned = true;
72d64a43 3983 cleaned_count++;
a292ca6e
JK		 3984 pci_unmap_single(pdev,
3985 buffer_info->dma,
3986 buffer_info->length,
1da177e4
LT		 3987 PCI_DMA_FROMDEVICE);
3988
1da177e4
LT		 3989 length = le16_to_cpu(rx_desc->length);
3990
a1415ee6
JK		 3991 if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
3992 /* All receives must fit into a single buffer */
3993 E1000_DBG("%s: Receive packet consumed multiple"
3994 " buffers\n", netdev->name);
864c4e45 3995 /* recycle */
8fc897b0 3996 buffer_info->skb = skb;
1da177e4
LT		 3997 goto next_desc;
3998 }
3999
96838a40 4000 if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
1da177e4 4001 last_byte = *(skb->data + length - 1);
1dc32918
JP		 4002 if (TBI_ACCEPT(hw, status, rx_desc->errors, length,
4003 last_byte)) {
1da177e4 4004 spin_lock_irqsave(&adapter->stats_lock, flags);
1dc32918 4005 e1000_tbi_adjust_stats(hw, &adapter->stats,
1da177e4
LT		 4006 length, skb->data);
4007 spin_unlock_irqrestore(&adapter->stats_lock,
4008 flags);
4009 length--;
4010 } else {
9e2feace
AK		 4011 /* recycle */
4012 buffer_info->skb = skb;
1da177e4
LT		 4013 goto next_desc;
4014 }
1cb5821f 4015 }
1da177e4 4016
d2a1e213
JB		 4017 /* adjust length to remove Ethernet CRC, this must be
4018 * done after the TBI_ACCEPT workaround above */
4019 length -= 4;
4020
835bb129
JB		 4021 /* probably a little skewed due to removing CRC */
4022 total_rx_bytes += length;
4023 total_rx_packets++;
4024
a292ca6e
JK		 4025 /* code added for copybreak, this should improve
4026 * performance for small packets with large amounts
4027 * of reassembly being done in the stack */
1f753861 4028 if (length < copybreak) {
a292ca6e 4029 struct sk_buff *new_skb =
87f5032e 4030 netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
a292ca6e
JK		 4031 if (new_skb) {
4032 skb_reserve(new_skb, NET_IP_ALIGN);
27d7ff46
ACM		 4033 skb_copy_to_linear_data_offset(new_skb,
4034 -NET_IP_ALIGN,
4035 (skb->data -
4036 NET_IP_ALIGN),
4037 (length +
4038 NET_IP_ALIGN));
a292ca6e
JK		 4039 /* save the skb in buffer_info as good */
4040 buffer_info->skb = skb;
4041 skb = new_skb;
a292ca6e 4042 }
996695de
AK		 4043 /* else just continue with the old one */
4044 }
a292ca6e 4045 /* end copybreak code */
996695de 4046 skb_put(skb, length);
1da177e4
LT		 4047
4048 /* Receive Checksum Offload */
a292ca6e 4049 e1000_rx_checksum(adapter,
406874a7
JP		 4050 (u32)(status) |
4051 ((u32)(rx_desc->errors) << 24),
c3d7a3a4 4052 le16_to_cpu(rx_desc->csum), skb);
96838a40 4053
1da177e4 4054 skb->protocol = eth_type_trans(skb, netdev);
c3570acb 4055
96838a40 4056 if (unlikely(adapter->vlgrp &&
a292ca6e 4057 (status & E1000_RXD_STAT_VP))) {
1da177e4 4058 vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
38b22195 4059 le16_to_cpu(rx_desc->special));
1da177e4
LT		 4060 } else {
4061 netif_receive_skb(skb);
4062 }
c3570acb 4063
1da177e4
LT		 4064next_desc:
4065 rx_desc->status = 0;
1da177e4 4066
72d64a43
JK		 4067 /* return some buffers to hardware, one at a time is too slow */
4068 if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
4069 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
4070 cleaned_count = 0;
4071 }
4072
30320be8 4073 /* use prefetched values */
86c3d59f
JB		 4074 rx_desc = next_rxd;
4075 buffer_info = next_buffer;
1da177e4 4076 }
1da177e4 4077 rx_ring->next_to_clean = i;
72d64a43
JK		 4078
4079 cleaned_count = E1000_DESC_UNUSED(rx_ring);
4080 if (cleaned_count)
4081 adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
2d7edb92 4082
835bb129
JB		 4083 adapter->total_rx_packets += total_rx_packets;
4084 adapter->total_rx_bytes += total_rx_bytes;
ef90e4ec
AK		 4085 adapter->net_stats.rx_bytes += total_rx_bytes;
4086 adapter->net_stats.rx_packets += total_rx_packets;
2d7edb92
MC		 4087 return cleaned;
4088}
4089
1da177e4 4090/**
2d7edb92 4091 * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
1da177e4
LT		 4092 * @adapter: address of board private structure
4093 **/
4094
64798845
JP		 4095static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
4096 struct e1000_rx_ring *rx_ring,
4097 int cleaned_count)
1da177e4 4098{
1dc32918 4099 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 4100 struct net_device *netdev = adapter->netdev;
4101 struct pci_dev *pdev = adapter->pdev;
4102 struct e1000_rx_desc *rx_desc;
4103 struct e1000_buffer *buffer_info;
4104 struct sk_buff *skb;
2648345f
MC		 4105 unsigned int i;
4106 unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
1da177e4
LT		 4107
4108 i = rx_ring->next_to_use;
4109 buffer_info = &rx_ring->buffer_info[i];
4110
a292ca6e 4111 while (cleaned_count--) {
ca6f7224
CH		 4112 skb = buffer_info->skb;
4113 if (skb) {
a292ca6e
JK		 4114 skb_trim(skb, 0);
4115 goto map_skb;
4116 }
4117
ca6f7224 4118 skb = netdev_alloc_skb(netdev, bufsz);
96838a40 4119 if (unlikely(!skb)) {
1da177e4 4120 /* Better luck next round */
72d64a43 4121 adapter->alloc_rx_buff_failed++;
1da177e4
LT		 4122 break;
4123 }
4124
2648345f 4125 /* Fix for errata 23, can't cross 64kB boundary */
1da177e4
LT		 4126 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4127 struct sk_buff *oldskb = skb;
2648345f
MC		 4128 DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
4129 "at %p\n", bufsz, skb->data);
4130 /* Try again, without freeing the previous */
87f5032e 4131 skb = netdev_alloc_skb(netdev, bufsz);
2648345f 4132 /* Failed allocation, critical failure */
1da177e4
LT		 4133 if (!skb) {
4134 dev_kfree_skb(oldskb);
4135 break;
4136 }
2648345f 4137
1da177e4
LT		 4138 if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
4139 /* give up */
4140 dev_kfree_skb(skb);
4141 dev_kfree_skb(oldskb);
4142 break; /* while !buffer_info->skb */
1da177e4 4143 }
ca6f7224
CH		 4144
4145 /* Use new allocation */
4146 dev_kfree_skb(oldskb);
1da177e4 4147 }
1da177e4
LT		 4148 /* Make buffer alignment 2 beyond a 16 byte boundary
4149 * this will result in a 16 byte aligned IP header after
4150 * the 14 byte MAC header is removed
4151 */
4152 skb_reserve(skb, NET_IP_ALIGN);
4153
1da177e4
LT		 4154 buffer_info->skb = skb;
4155 buffer_info->length = adapter->rx_buffer_len;
a292ca6e 4156map_skb:
1da177e4
LT		 4157 buffer_info->dma = pci_map_single(pdev,
4158 skb->data,
4159 adapter->rx_buffer_len,
4160 PCI_DMA_FROMDEVICE);
4161
2648345f
MC		 4162 /* Fix for errata 23, can't cross 64kB boundary */
4163 if (!e1000_check_64k_bound(adapter,
4164 (void *)(unsigned long)buffer_info->dma,
4165 adapter->rx_buffer_len)) {
4166 DPRINTK(RX_ERR, ERR,
4167 "dma align check failed: %u bytes at %p\n",
4168 adapter->rx_buffer_len,
4169 (void *)(unsigned long)buffer_info->dma);
1da177e4
LT		 4170 dev_kfree_skb(skb);
4171 buffer_info->skb = NULL;
4172
2648345f 4173 pci_unmap_single(pdev, buffer_info->dma,
1da177e4
LT		 4174 adapter->rx_buffer_len,
4175 PCI_DMA_FROMDEVICE);
4176
4177 break; /* while !buffer_info->skb */
4178 }
1da177e4
LT		 4179 rx_desc = E1000_RX_DESC(*rx_ring, i);
4180 rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
4181
96838a40
JB		 4182 if (unlikely(++i == rx_ring->count))
4183 i = 0;
1da177e4
LT		 4184 buffer_info = &rx_ring->buffer_info[i];
4185 }
4186
b92ff8ee
JB		 4187 if (likely(rx_ring->next_to_use != i)) {
4188 rx_ring->next_to_use = i;
4189 if (unlikely(i-- == 0))
4190 i = (rx_ring->count - 1);
4191
4192 /* Force memory writes to complete before letting h/w
4193 * know there are new descriptors to fetch. (Only
4194 * applicable for weak-ordered memory model archs,
4195 * such as IA-64). */
4196 wmb();
1dc32918 4197 writel(i, hw->hw_addr + rx_ring->rdt);
b92ff8ee 4198 }
1da177e4
LT		 4199}
4200
4201/**
4202 * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
4203 * @adapter:
4204 **/
4205
64798845 4206static void e1000_smartspeed(struct e1000_adapter *adapter)
1da177e4 4207{
1dc32918 4208 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 4209 u16 phy_status;
4210 u16 phy_ctrl;
1da177e4 4211
1dc32918
JP		 4212 if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg ||
4213 !(hw->autoneg_advertised & ADVERTISE_1000_FULL))
1da177e4
LT		 4214 return;
4215
96838a40 4216 if (adapter->smartspeed == 0) {
1da177e4
LT		 4217 /* If Master/Slave config fault is asserted twice,
4218 * we assume back-to-back */
1dc32918 4219 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
96838a40 4220 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
1dc32918 4221 e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status);
96838a40 4222 if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
1dc32918 4223 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
96838a40 4224 if (phy_ctrl & CR_1000T_MS_ENABLE) {
1da177e4 4225 phy_ctrl &= ~CR_1000T_MS_ENABLE;
1dc32918 4226 e1000_write_phy_reg(hw, PHY_1000T_CTRL,
1da177e4
LT		 4227 phy_ctrl);
4228 adapter->smartspeed++;
1dc32918
JP		 4229 if (!e1000_phy_setup_autoneg(hw) &&
4230 !e1000_read_phy_reg(hw, PHY_CTRL,
1da177e4
LT		 4231 &phy_ctrl)) {
4232 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4233 MII_CR_RESTART_AUTO_NEG);
1dc32918 4234 e1000_write_phy_reg(hw, PHY_CTRL,
1da177e4
LT		 4235 phy_ctrl);
4236 }
4237 }
4238 return;
96838a40 4239 } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
1da177e4 4240 /* If still no link, perhaps using 2/3 pair cable */
1dc32918 4241 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl);
1da177e4 4242 phy_ctrl |= CR_1000T_MS_ENABLE;
1dc32918
JP		 4243 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl);
4244 if (!e1000_phy_setup_autoneg(hw) &&
4245 !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) {
1da177e4
LT		 4246 phy_ctrl |= (MII_CR_AUTO_NEG_EN |
4247 MII_CR_RESTART_AUTO_NEG);
1dc32918 4248 e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl);
1da177e4
LT		 4249 }
4250 }
4251 /* Restart process after E1000_SMARTSPEED_MAX iterations */
96838a40 4252 if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
1da177e4
LT		 4253 adapter->smartspeed = 0;
4254}
4255
4256/**
4257 * e1000_ioctl -
4258 * @netdev:
4259 * @ifreq:
4260 * @cmd:
4261 **/
4262
64798845 4263static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1da177e4
LT		 4264{
4265 switch (cmd) {
4266 case SIOCGMIIPHY:
4267 case SIOCGMIIREG:
4268 case SIOCSMIIREG:
4269 return e1000_mii_ioctl(netdev, ifr, cmd);
4270 default:
4271 return -EOPNOTSUPP;
4272 }
4273}
4274
4275/**
4276 * e1000_mii_ioctl -
4277 * @netdev:
4278 * @ifreq:
4279 * @cmd:
4280 **/
4281
64798845
JP		 4282static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
4283 int cmd)
1da177e4 4284{
60490fe0 4285 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4286 struct e1000_hw *hw = &adapter->hw;
1da177e4
LT		 4287 struct mii_ioctl_data *data = if_mii(ifr);
4288 int retval;
406874a7
JP		 4289 u16 mii_reg;
4290 u16 spddplx;
97876fc6 4291 unsigned long flags;
1da177e4 4292
1dc32918 4293 if (hw->media_type != e1000_media_type_copper)
1da177e4
LT		 4294 return -EOPNOTSUPP;
4295
4296 switch (cmd) {
4297 case SIOCGMIIPHY:
1dc32918 4298 data->phy_id = hw->phy_addr;
1da177e4
LT		 4299 break;
4300 case SIOCGMIIREG:
96838a40 4301 if (!capable(CAP_NET_ADMIN))
1da177e4 4302 return -EPERM;
97876fc6 4303 spin_lock_irqsave(&adapter->stats_lock, flags);
1dc32918 4304 if (e1000_read_phy_reg(hw, data->reg_num & 0x1F,
97876fc6
MC		 4305 &data->val_out)) {
4306 spin_unlock_irqrestore(&adapter->stats_lock, flags);
1da177e4 4307 return -EIO;
97876fc6
MC		 4308 }
4309 spin_unlock_irqrestore(&adapter->stats_lock, flags);
1da177e4
LT		 4310 break;
4311 case SIOCSMIIREG:
96838a40 4312 if (!capable(CAP_NET_ADMIN))
1da177e4 4313 return -EPERM;
96838a40 4314 if (data->reg_num & ~(0x1F))
1da177e4
LT		 4315 return -EFAULT;
4316 mii_reg = data->val_in;
97876fc6 4317 spin_lock_irqsave(&adapter->stats_lock, flags);
1dc32918 4318 if (e1000_write_phy_reg(hw, data->reg_num,
97876fc6
MC		 4319 mii_reg)) {
4320 spin_unlock_irqrestore(&adapter->stats_lock, flags);
1da177e4 4321 return -EIO;
97876fc6 4322 }
f0163ac4 4323 spin_unlock_irqrestore(&adapter->stats_lock, flags);
1dc32918 4324 if (hw->media_type == e1000_media_type_copper) {
1da177e4
LT		 4325 switch (data->reg_num) {
4326 case PHY_CTRL:
96838a40 4327 if (mii_reg & MII_CR_POWER_DOWN)
1da177e4 4328 break;
96838a40 4329 if (mii_reg & MII_CR_AUTO_NEG_EN) {
1dc32918
JP		 4330 hw->autoneg = 1;
4331 hw->autoneg_advertised = 0x2F;
1da177e4
LT		 4332 } else {
4333 if (mii_reg & 0x40)
4334 spddplx = SPEED_1000;
4335 else if (mii_reg & 0x2000)
4336 spddplx = SPEED_100;
4337 else
4338 spddplx = SPEED_10;
4339 spddplx += (mii_reg & 0x100)
cb764326
JK		 4340 ? DUPLEX_FULL :
4341 DUPLEX_HALF;
1da177e4
LT		 4342 retval = e1000_set_spd_dplx(adapter,
4343 spddplx);
f0163ac4 4344 if (retval)
1da177e4
LT		 4345 return retval;
4346 }
2db10a08
AK		 4347 if (netif_running(adapter->netdev))
4348 e1000_reinit_locked(adapter);
4349 else
1da177e4
LT		 4350 e1000_reset(adapter);
4351 break;
4352 case M88E1000_PHY_SPEC_CTRL:
4353 case M88E1000_EXT_PHY_SPEC_CTRL:
1dc32918 4354 if (e1000_phy_reset(hw))
1da177e4
LT		 4355 return -EIO;
4356 break;
4357 }
4358 } else {
4359 switch (data->reg_num) {
4360 case PHY_CTRL:
96838a40 4361 if (mii_reg & MII_CR_POWER_DOWN)
1da177e4 4362 break;
2db10a08
AK		 4363 if (netif_running(adapter->netdev))
4364 e1000_reinit_locked(adapter);
4365 else
1da177e4
LT		 4366 e1000_reset(adapter);
4367 break;
4368 }
4369 }
4370 break;
4371 default:
4372 return -EOPNOTSUPP;
4373 }
4374 return E1000_SUCCESS;
4375}
4376
64798845 4377void e1000_pci_set_mwi(struct e1000_hw *hw)
1da177e4
LT		 4378{
4379 struct e1000_adapter *adapter = hw->back;
2648345f 4380 int ret_val = pci_set_mwi(adapter->pdev);
1da177e4 4381
96838a40 4382 if (ret_val)
2648345f 4383 DPRINTK(PROBE, ERR, "Error in setting MWI\n");
1da177e4
LT		 4384}
4385
64798845 4386void e1000_pci_clear_mwi(struct e1000_hw *hw)
1da177e4
LT		 4387{
4388 struct e1000_adapter *adapter = hw->back;
4389
4390 pci_clear_mwi(adapter->pdev);
4391}
4392
64798845 4393int e1000_pcix_get_mmrbc(struct e1000_hw *hw)
007755eb
PO		 4394{
4395 struct e1000_adapter *adapter = hw->back;
4396 return pcix_get_mmrbc(adapter->pdev);
4397}
4398
64798845 4399void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
007755eb
PO		 4400{
4401 struct e1000_adapter *adapter = hw->back;
4402 pcix_set_mmrbc(adapter->pdev, mmrbc);
4403}
4404
64798845 4405s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value)
caeccb68
JK		 4406{
4407 struct e1000_adapter *adapter = hw->back;
406874a7 4408 u16 cap_offset;
caeccb68
JK		 4409
4410 cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
4411 if (!cap_offset)
4412 return -E1000_ERR_CONFIG;
4413
4414 pci_read_config_word(adapter->pdev, cap_offset + reg, value);
4415
4416 return E1000_SUCCESS;
4417}
4418
64798845 4419void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value)
1da177e4
LT		 4420{
4421 outl(value, port);
4422}
4423
64798845
JP		 4424static void e1000_vlan_rx_register(struct net_device *netdev,
4425 struct vlan_group *grp)
1da177e4 4426{
60490fe0 4427 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4428 struct e1000_hw *hw = &adapter->hw;
406874a7 4429 u32 ctrl, rctl;
1da177e4 4430
9150b76a
JB		 4431 if (!test_bit(__E1000_DOWN, &adapter->flags))
4432 e1000_irq_disable(adapter);
1da177e4
LT		 4433 adapter->vlgrp = grp;
4434
96838a40 4435 if (grp) {
1da177e4 4436 /* enable VLAN tag insert/strip */
1dc32918 4437 ctrl = er32(CTRL);
1da177e4 4438 ctrl |= E1000_CTRL_VME;
1dc32918 4439 ew32(CTRL, ctrl);
1da177e4 4440
cd94dd0b 4441 if (adapter->hw.mac_type != e1000_ich8lan) {
90fb5135 4442 /* enable VLAN receive filtering */
1dc32918 4443 rctl = er32(RCTL);
90fb5135 4444 rctl &= ~E1000_RCTL_CFIEN;
1dc32918 4445 ew32(RCTL, rctl);
90fb5135 4446 e1000_update_mng_vlan(adapter);
cd94dd0b 4447 }
1da177e4
LT		 4448 } else {
4449 /* disable VLAN tag insert/strip */
1dc32918 4450 ctrl = er32(CTRL);
1da177e4 4451 ctrl &= ~E1000_CTRL_VME;
1dc32918 4452 ew32(CTRL, ctrl);
1da177e4 4453
cd94dd0b 4454 if (adapter->hw.mac_type != e1000_ich8lan) {
90fb5135 4455 if (adapter->mng_vlan_id !=
406874a7 4456 (u16)E1000_MNG_VLAN_NONE) {
90fb5135
AK		 4457 e1000_vlan_rx_kill_vid(netdev,
4458 adapter->mng_vlan_id);
4459 adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
4460 }
cd94dd0b 4461 }
1da177e4
LT		 4462 }
4463
9150b76a
JB		 4464 if (!test_bit(__E1000_DOWN, &adapter->flags))
4465 e1000_irq_enable(adapter);
1da177e4
LT		 4466}
4467
64798845 4468static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
1da177e4 4469{
60490fe0 4470 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4471 struct e1000_hw *hw = &adapter->hw;
406874a7 4472 u32 vfta, index;
96838a40 4473
1dc32918 4474 if ((hw->mng_cookie.status &
96838a40
JB		 4475 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
4476 (vid == adapter->mng_vlan_id))
2d7edb92 4477 return;
1da177e4
LT		 4478 /* add VID to filter table */
4479 index = (vid >> 5) & 0x7F;
1dc32918 4480 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
1da177e4 4481 vfta |= (1 << (vid & 0x1F));
1dc32918 4482 e1000_write_vfta(hw, index, vfta);
1da177e4
LT		 4483}
4484
64798845 4485static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
1da177e4 4486{
60490fe0 4487 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4488 struct e1000_hw *hw = &adapter->hw;
406874a7 4489 u32 vfta, index;
1da177e4 4490
9150b76a
JB		 4491 if (!test_bit(__E1000_DOWN, &adapter->flags))
4492 e1000_irq_disable(adapter);
5c15bdec 4493 vlan_group_set_device(adapter->vlgrp, vid, NULL);
9150b76a
JB		 4494 if (!test_bit(__E1000_DOWN, &adapter->flags))
4495 e1000_irq_enable(adapter);
1da177e4 4496
1dc32918 4497 if ((hw->mng_cookie.status &
96838a40 4498 E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
ff147013
JK		 4499 (vid == adapter->mng_vlan_id)) {
4500 /* release control to f/w */
4501 e1000_release_hw_control(adapter);
2d7edb92 4502 return;
ff147013
JK		 4503 }
4504
1da177e4
LT		 4505 /* remove VID from filter table */
4506 index = (vid >> 5) & 0x7F;
1dc32918 4507 vfta = E1000_READ_REG_ARRAY(hw, VFTA, index);
1da177e4 4508 vfta &= ~(1 << (vid & 0x1F));
1dc32918 4509 e1000_write_vfta(hw, index, vfta);
1da177e4
LT		 4510}
4511
64798845 4512static void e1000_restore_vlan(struct e1000_adapter *adapter)
1da177e4
LT		 4513{
4514 e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
4515
96838a40 4516 if (adapter->vlgrp) {
406874a7 4517 u16 vid;
96838a40 4518 for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
5c15bdec 4519 if (!vlan_group_get_device(adapter->vlgrp, vid))
1da177e4
LT		 4520 continue;
4521 e1000_vlan_rx_add_vid(adapter->netdev, vid);
4522 }
4523 }
4524}
4525
64798845 4526int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
1da177e4 4527{
1dc32918
JP		 4528 struct e1000_hw *hw = &adapter->hw;
4529
4530 hw->autoneg = 0;
1da177e4 4531
6921368f 4532 /* Fiber NICs only allow 1000 gbps Full duplex */
1dc32918 4533 if ((hw->media_type == e1000_media_type_fiber) &&
6921368f
MC		 4534 spddplx != (SPEED_1000 + DUPLEX_FULL)) {
4535 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
4536 return -EINVAL;
4537 }
4538
96838a40 4539 switch (spddplx) {
1da177e4 4540 case SPEED_10 + DUPLEX_HALF:
1dc32918 4541 hw->forced_speed_duplex = e1000_10_half;
1da177e4
LT		 4542 break;
4543 case SPEED_10 + DUPLEX_FULL:
1dc32918 4544 hw->forced_speed_duplex = e1000_10_full;
1da177e4
LT		 4545 break;
4546 case SPEED_100 + DUPLEX_HALF:
1dc32918 4547 hw->forced_speed_duplex = e1000_100_half;
1da177e4
LT		 4548 break;
4549 case SPEED_100 + DUPLEX_FULL:
1dc32918 4550 hw->forced_speed_duplex = e1000_100_full;
1da177e4
LT		 4551 break;
4552 case SPEED_1000 + DUPLEX_FULL:
1dc32918
JP		 4553 hw->autoneg = 1;
4554 hw->autoneg_advertised = ADVERTISE_1000_FULL;
1da177e4
LT		 4555 break;
4556 case SPEED_1000 + DUPLEX_HALF: /* not supported */
4557 default:
2648345f 4558 DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
1da177e4
LT		 4559 return -EINVAL;
4560 }
4561 return 0;
4562}
4563
64798845 4564static int e1000_suspend(struct pci_dev *pdev, pm_message_t state)
1da177e4
LT		 4565{
4566 struct net_device *netdev = pci_get_drvdata(pdev);
60490fe0 4567 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4568 struct e1000_hw *hw = &adapter->hw;
406874a7
JP		 4569 u32 ctrl, ctrl_ext, rctl, status;
4570 u32 wufc = adapter->wol;
6fdfef16 4571#ifdef CONFIG_PM
240b1710 4572 int retval = 0;
6fdfef16 4573#endif
1da177e4
LT		 4574
4575 netif_device_detach(netdev);
4576
2db10a08
AK		 4577 if (netif_running(netdev)) {
4578 WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
1da177e4 4579 e1000_down(adapter);
2db10a08 4580 }
1da177e4 4581
2f82665f 4582#ifdef CONFIG_PM
1d33e9c6 4583 retval = pci_save_state(pdev);
2f82665f
JB		 4584 if (retval)
4585 return retval;
4586#endif
4587
1dc32918 4588 status = er32(STATUS);
96838a40 4589 if (status & E1000_STATUS_LU)
1da177e4
LT		 4590 wufc &= ~E1000_WUFC_LNKC;
4591
96838a40 4592 if (wufc) {
1da177e4 4593 e1000_setup_rctl(adapter);
db0ce50d 4594 e1000_set_rx_mode(netdev);
1da177e4
LT		 4595
4596 /* turn on all-multi mode if wake on multicast is enabled */
120cd576 4597 if (wufc & E1000_WUFC_MC) {
1dc32918 4598 rctl = er32(RCTL);
1da177e4 4599 rctl |= E1000_RCTL_MPE;
1dc32918 4600 ew32(RCTL, rctl);
1da177e4
LT		 4601 }
4602
1dc32918
JP		 4603 if (hw->mac_type >= e1000_82540) {
4604 ctrl = er32(CTRL);
1da177e4
LT		 4605 /* advertise wake from D3Cold */
4606 #define E1000_CTRL_ADVD3WUC 0x00100000
4607 /* phy power management enable */
4608 #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
4609 ctrl |= E1000_CTRL_ADVD3WUC |
4610 E1000_CTRL_EN_PHY_PWR_MGMT;
1dc32918 4611 ew32(CTRL, ctrl);
1da177e4
LT		 4612 }
4613
1dc32918
JP		 4614 if (hw->media_type == e1000_media_type_fiber ||
4615 hw->media_type == e1000_media_type_internal_serdes) {
1da177e4 4616 /* keep the laser running in D3 */
1dc32918 4617 ctrl_ext = er32(CTRL_EXT);
1da177e4 4618 ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
1dc32918 4619 ew32(CTRL_EXT, ctrl_ext);
1da177e4
LT		 4620 }
4621
2d7edb92 4622 /* Allow time for pending master requests to run */
1dc32918 4623 e1000_disable_pciex_master(hw);
2d7edb92 4624
1dc32918
JP		 4625 ew32(WUC, E1000_WUC_PME_EN);
4626 ew32(WUFC, wufc);
d0e027db
AK		 4627 pci_enable_wake(pdev, PCI_D3hot, 1);
4628 pci_enable_wake(pdev, PCI_D3cold, 1);
1da177e4 4629 } else {
1dc32918
JP		 4630 ew32(WUC, 0);
4631 ew32(WUFC, 0);
d0e027db
AK		 4632 pci_enable_wake(pdev, PCI_D3hot, 0);
4633 pci_enable_wake(pdev, PCI_D3cold, 0);
1da177e4
LT		 4634 }
4635
0fccd0e9
JG		 4636 e1000_release_manageability(adapter);
4637
4638 /* make sure adapter isn't asleep if manageability is enabled */
4639 if (adapter->en_mng_pt) {
4640 pci_enable_wake(pdev, PCI_D3hot, 1);
4641 pci_enable_wake(pdev, PCI_D3cold, 1);
1da177e4
LT		 4642 }
4643
1dc32918
JP		 4644 if (hw->phy_type == e1000_phy_igp_3)
4645 e1000_phy_powerdown_workaround(hw);
cd94dd0b 4646
edd106fc
AK		 4647 if (netif_running(netdev))
4648 e1000_free_irq(adapter);
4649
b55ccb35
JK		 4650 /* Release control of h/w to f/w. If f/w is AMT enabled, this
4651 * would have already happened in close and is redundant. */
4652 e1000_release_hw_control(adapter);
2d7edb92 4653
1da177e4 4654 pci_disable_device(pdev);
240b1710 4655
d0e027db 4656 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1da177e4
LT		 4657
4658 return 0;
4659}
4660
2f82665f 4661#ifdef CONFIG_PM
64798845 4662static int e1000_resume(struct pci_dev *pdev)
1da177e4
LT		 4663{
4664 struct net_device *netdev = pci_get_drvdata(pdev);
60490fe0 4665 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4666 struct e1000_hw *hw = &adapter->hw;
406874a7 4667 u32 err;
1da177e4 4668
d0e027db 4669 pci_set_power_state(pdev, PCI_D0);
1d33e9c6 4670 pci_restore_state(pdev);
81250297
TI		 4671
4672 if (adapter->need_ioport)
4673 err = pci_enable_device(pdev);
4674 else
4675 err = pci_enable_device_mem(pdev);
c7be73bc 4676 if (err) {
3d1dd8cb
AK		 4677 printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
4678 return err;
4679 }
a4cb847d 4680 pci_set_master(pdev);
1da177e4 4681
d0e027db
AK		 4682 pci_enable_wake(pdev, PCI_D3hot, 0);
4683 pci_enable_wake(pdev, PCI_D3cold, 0);
1da177e4 4684
c7be73bc
JP		 4685 if (netif_running(netdev)) {
4686 err = e1000_request_irq(adapter);
4687 if (err)
4688 return err;
4689 }
edd106fc
AK		 4690
4691 e1000_power_up_phy(adapter);
1da177e4 4692 e1000_reset(adapter);
1dc32918 4693 ew32(WUS, ~0);
1da177e4 4694
0fccd0e9
JG		 4695 e1000_init_manageability(adapter);
4696
96838a40 4697 if (netif_running(netdev))
1da177e4
LT		 4698 e1000_up(adapter);
4699
4700 netif_device_attach(netdev);
4701
b55ccb35
JK		 4702 /* If the controller is 82573 and f/w is AMT, do not set
4703 * DRV_LOAD until the interface is up. For all other cases,
4704 * let the f/w know that the h/w is now under the control
4705 * of the driver. */
1dc32918
JP		 4706 if (hw->mac_type != e1000_82573 ||
4707 !e1000_check_mng_mode(hw))
b55ccb35 4708 e1000_get_hw_control(adapter);
2d7edb92 4709
1da177e4
LT		 4710 return 0;
4711}
4712#endif
c653e635
AK		 4713
4714static void e1000_shutdown(struct pci_dev *pdev)
4715{
4716 e1000_suspend(pdev, PMSG_SUSPEND);
4717}
4718
1da177e4
LT		 4719#ifdef CONFIG_NET_POLL_CONTROLLER
4720/*
4721 * Polling 'interrupt' - used by things like netconsole to send skbs
4722 * without having to re-enable interrupts. It's not called while
4723 * the interrupt routine is executing.
4724 */
64798845 4725static void e1000_netpoll(struct net_device *netdev)
1da177e4 4726{
60490fe0 4727 struct e1000_adapter *adapter = netdev_priv(netdev);
d3d9e484 4728
1da177e4 4729 disable_irq(adapter->pdev->irq);
7d12e780 4730 e1000_intr(adapter->pdev->irq, netdev);
1da177e4
LT		 4731 enable_irq(adapter->pdev->irq);
4732}
4733#endif
4734
9026729b
AK		 4735/**
4736 * e1000_io_error_detected - called when PCI error is detected
4737 * @pdev: Pointer to PCI device
4738 * @state: The current pci conneection state
4739 *
4740 * This function is called after a PCI bus error affecting
4741 * this device has been detected.
4742 */
64798845
JP		 4743static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
4744 pci_channel_state_t state)
9026729b
AK		 4745{
4746 struct net_device *netdev = pci_get_drvdata(pdev);
4cf1653a 4747 struct e1000_adapter *adapter = netdev_priv(netdev);
9026729b
AK		 4748
4749 netif_device_detach(netdev);
4750
4751 if (netif_running(netdev))
4752 e1000_down(adapter);
72e8d6bb 4753 pci_disable_device(pdev);
9026729b
AK		 4754
4755 /* Request a slot slot reset. */
4756 return PCI_ERS_RESULT_NEED_RESET;
4757}
4758
4759/**
4760 * e1000_io_slot_reset - called after the pci bus has been reset.
4761 * @pdev: Pointer to PCI device
4762 *
4763 * Restart the card from scratch, as if from a cold-boot. Implementation
4764 * resembles the first-half of the e1000_resume routine.
4765 */
4766static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
4767{
4768 struct net_device *netdev = pci_get_drvdata(pdev);
4cf1653a 4769 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4770 struct e1000_hw *hw = &adapter->hw;
81250297 4771 int err;
9026729b 4772
81250297
TI		 4773 if (adapter->need_ioport)
4774 err = pci_enable_device(pdev);
4775 else
4776 err = pci_enable_device_mem(pdev);
4777 if (err) {
9026729b
AK		 4778 printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
4779 return PCI_ERS_RESULT_DISCONNECT;
4780 }
4781 pci_set_master(pdev);
4782
dbf38c94
LV		 4783 pci_enable_wake(pdev, PCI_D3hot, 0);
4784 pci_enable_wake(pdev, PCI_D3cold, 0);
9026729b 4785
9026729b 4786 e1000_reset(adapter);
1dc32918 4787 ew32(WUS, ~0);
9026729b
AK		 4788
4789 return PCI_ERS_RESULT_RECOVERED;
4790}
4791
4792/**
4793 * e1000_io_resume - called when traffic can start flowing again.
4794 * @pdev: Pointer to PCI device
4795 *
4796 * This callback is called when the error recovery driver tells us that
4797 * its OK to resume normal operation. Implementation resembles the
4798 * second-half of the e1000_resume routine.
4799 */
4800static void e1000_io_resume(struct pci_dev *pdev)
4801{
4802 struct net_device *netdev = pci_get_drvdata(pdev);
4cf1653a 4803 struct e1000_adapter *adapter = netdev_priv(netdev);
1dc32918 4804 struct e1000_hw *hw = &adapter->hw;
0fccd0e9
JG		 4805
4806 e1000_init_manageability(adapter);
9026729b
AK		 4807
4808 if (netif_running(netdev)) {
4809 if (e1000_up(adapter)) {
4810 printk("e1000: can't bring device back up after reset\n");
4811 return;
4812 }
4813 }
4814
4815 netif_device_attach(netdev);
4816
0fccd0e9
JG		 4817 /* If the controller is 82573 and f/w is AMT, do not set
4818 * DRV_LOAD until the interface is up. For all other cases,
4819 * let the f/w know that the h/w is now under the control
4820 * of the driver. */
1dc32918
JP		 4821 if (hw->mac_type != e1000_82573 ||
4822 !e1000_check_mng_mode(hw))
0fccd0e9 4823 e1000_get_hw_control(adapter);
9026729b 4824
9026729b
AK		 4825}
4826
1da177e4 4827/* e1000_main.c */
Linux kernel - Deliverables
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