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Commit | Line | Data |
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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> |
5377a416 DB |
31 | #include <linux/io.h> |
32 | ||
33 | /* Intel Media SOC GbE MDIO physical base address */ | |
34 | static unsigned long ce4100_gbe_mdio_base_phy; | |
35 | /* Intel Media SOC GbE MDIO virtual base address */ | |
36 | void __iomem *ce4100_gbe_mdio_base_virt; | |
1da177e4 | 37 | |
1da177e4 | 38 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 39 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
ab08853f | 40 | #define DRV_VERSION "7.3.21-k8-NAPI" |
abec42a4 SH |
41 | const char e1000_driver_version[] = DRV_VERSION; |
42 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
43 | |
44 | /* e1000_pci_tbl - PCI Device ID Table | |
45 | * | |
46 | * Last entry must be all 0s | |
47 | * | |
48 | * Macro expands to... | |
49 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
50 | */ | |
a3aa1884 | 51 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
1da177e4 LT |
52 | INTEL_E1000_ETHERNET_DEVICE(0x1000), |
53 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 71 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
72 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
73 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
b7ee49db | 86 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
b7ee49db | 87 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
5377a416 | 88 | INTEL_E1000_ETHERNET_DEVICE(0x2E6E), |
1da177e4 LT |
89 | /* required last entry */ |
90 | {0,} | |
91 | }; | |
92 | ||
93 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
94 | ||
35574764 NN |
95 | int e1000_up(struct e1000_adapter *adapter); |
96 | void e1000_down(struct e1000_adapter *adapter); | |
97 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
98 | void e1000_reset(struct e1000_adapter *adapter); | |
406874a7 | 99 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
35574764 NN |
100 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
101 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
102 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
103 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 104 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 105 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 106 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 107 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 108 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 109 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 110 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
111 | struct e1000_rx_ring *rx_ring); |
112 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
113 | |
114 | static int e1000_init_module(void); | |
115 | static void e1000_exit_module(void); | |
116 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
117 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 118 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
119 | static int e1000_sw_init(struct e1000_adapter *adapter); |
120 | static int e1000_open(struct net_device *netdev); | |
121 | static int e1000_close(struct net_device *netdev); | |
122 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
123 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
124 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
125 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
126 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
127 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
128 | struct e1000_tx_ring *tx_ring); | |
129 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
130 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 131 | static void e1000_set_rx_mode(struct net_device *netdev); |
1da177e4 | 132 | static void e1000_update_phy_info(unsigned long data); |
5cf42fcd | 133 | static void e1000_update_phy_info_task(struct work_struct *work); |
1da177e4 | 134 | static void e1000_watchdog(unsigned long data); |
1da177e4 | 135 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
5cf42fcd | 136 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
3b29a56d SH |
137 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
138 | struct net_device *netdev); | |
1da177e4 LT |
139 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
140 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
141 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 142 | static irqreturn_t e1000_intr(int irq, void *data); |
c3033b01 JP |
143 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
144 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 145 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
146 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
147 | struct e1000_rx_ring *rx_ring, | |
148 | int *work_done, int work_to_do); | |
edbbb3ca JB |
149 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
150 | struct e1000_rx_ring *rx_ring, | |
151 | int *work_done, int work_to_do); | |
581d708e | 152 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
edbbb3ca | 153 | struct e1000_rx_ring *rx_ring, |
72d64a43 | 154 | int cleaned_count); |
edbbb3ca JB |
155 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
156 | struct e1000_rx_ring *rx_ring, | |
157 | int cleaned_count); | |
1da177e4 LT |
158 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
159 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
160 | int cmd); | |
1da177e4 LT |
161 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
162 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
163 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 164 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 165 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
166 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
167 | struct sk_buff *skb); | |
1da177e4 LT |
168 | |
169 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
406874a7 JP |
170 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
171 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
172 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
173 | ||
6fdfef16 | 174 | #ifdef CONFIG_PM |
b43fcd7d | 175 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
176 | static int e1000_resume(struct pci_dev *pdev); |
177 | #endif | |
c653e635 | 178 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
179 | |
180 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
181 | /* for netdump / net console */ | |
182 | static void e1000_netpoll (struct net_device *netdev); | |
183 | #endif | |
184 | ||
1f753861 JB |
185 | #define COPYBREAK_DEFAULT 256 |
186 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
187 | module_param(copybreak, uint, 0644); | |
188 | MODULE_PARM_DESC(copybreak, | |
189 | "Maximum size of packet that is copied to a new buffer on receive"); | |
190 | ||
9026729b AK |
191 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
192 | pci_channel_state_t state); | |
193 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
194 | static void e1000_io_resume(struct pci_dev *pdev); | |
195 | ||
196 | static struct pci_error_handlers e1000_err_handler = { | |
197 | .error_detected = e1000_io_error_detected, | |
198 | .slot_reset = e1000_io_slot_reset, | |
199 | .resume = e1000_io_resume, | |
200 | }; | |
24025e4e | 201 | |
1da177e4 LT |
202 | static struct pci_driver e1000_driver = { |
203 | .name = e1000_driver_name, | |
204 | .id_table = e1000_pci_tbl, | |
205 | .probe = e1000_probe, | |
206 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 207 | #ifdef CONFIG_PM |
25985edc | 208 | /* Power Management Hooks */ |
1da177e4 | 209 | .suspend = e1000_suspend, |
c653e635 | 210 | .resume = e1000_resume, |
1da177e4 | 211 | #endif |
9026729b AK |
212 | .shutdown = e1000_shutdown, |
213 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
214 | }; |
215 | ||
216 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
217 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
218 | MODULE_LICENSE("GPL"); | |
219 | MODULE_VERSION(DRV_VERSION); | |
220 | ||
221 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
222 | module_param(debug, int, 0); | |
223 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
224 | ||
675ad473 ET |
225 | /** |
226 | * e1000_get_hw_dev - return device | |
227 | * used by hardware layer to print debugging information | |
228 | * | |
229 | **/ | |
230 | struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) | |
231 | { | |
232 | struct e1000_adapter *adapter = hw->back; | |
233 | return adapter->netdev; | |
234 | } | |
235 | ||
1da177e4 LT |
236 | /** |
237 | * e1000_init_module - Driver Registration Routine | |
238 | * | |
239 | * e1000_init_module is the first routine called when the driver is | |
240 | * loaded. All it does is register with the PCI subsystem. | |
241 | **/ | |
242 | ||
64798845 | 243 | static int __init e1000_init_module(void) |
1da177e4 LT |
244 | { |
245 | int ret; | |
675ad473 | 246 | pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
1da177e4 | 247 | |
675ad473 | 248 | pr_info("%s\n", e1000_copyright); |
1da177e4 | 249 | |
29917620 | 250 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
251 | if (copybreak != COPYBREAK_DEFAULT) { |
252 | if (copybreak == 0) | |
675ad473 | 253 | pr_info("copybreak disabled\n"); |
1f753861 | 254 | else |
675ad473 ET |
255 | pr_info("copybreak enabled for " |
256 | "packets <= %u bytes\n", copybreak); | |
1f753861 | 257 | } |
1da177e4 LT |
258 | return ret; |
259 | } | |
260 | ||
261 | module_init(e1000_init_module); | |
262 | ||
263 | /** | |
264 | * e1000_exit_module - Driver Exit Cleanup Routine | |
265 | * | |
266 | * e1000_exit_module is called just before the driver is removed | |
267 | * from memory. | |
268 | **/ | |
269 | ||
64798845 | 270 | static void __exit e1000_exit_module(void) |
1da177e4 | 271 | { |
1da177e4 LT |
272 | pci_unregister_driver(&e1000_driver); |
273 | } | |
274 | ||
275 | module_exit(e1000_exit_module); | |
276 | ||
2db10a08 AK |
277 | static int e1000_request_irq(struct e1000_adapter *adapter) |
278 | { | |
279 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 280 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
281 | int irq_flags = IRQF_SHARED; |
282 | int err; | |
2db10a08 | 283 | |
e94bd23f AK |
284 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
285 | netdev); | |
286 | if (err) { | |
feb8f478 | 287 | e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
e94bd23f | 288 | } |
2db10a08 AK |
289 | |
290 | return err; | |
291 | } | |
292 | ||
293 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
294 | { | |
295 | struct net_device *netdev = adapter->netdev; | |
296 | ||
297 | free_irq(adapter->pdev->irq, netdev); | |
2db10a08 AK |
298 | } |
299 | ||
1da177e4 LT |
300 | /** |
301 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
302 | * @adapter: board private structure | |
303 | **/ | |
304 | ||
64798845 | 305 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 306 | { |
1dc32918 JP |
307 | struct e1000_hw *hw = &adapter->hw; |
308 | ||
309 | ew32(IMC, ~0); | |
310 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
311 | synchronize_irq(adapter->pdev->irq); |
312 | } | |
313 | ||
314 | /** | |
315 | * e1000_irq_enable - Enable default interrupt generation settings | |
316 | * @adapter: board private structure | |
317 | **/ | |
318 | ||
64798845 | 319 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 320 | { |
1dc32918 JP |
321 | struct e1000_hw *hw = &adapter->hw; |
322 | ||
323 | ew32(IMS, IMS_ENABLE_MASK); | |
324 | E1000_WRITE_FLUSH(); | |
1da177e4 | 325 | } |
3ad2cc67 | 326 | |
64798845 | 327 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 328 | { |
1dc32918 | 329 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 330 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 331 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 332 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 333 | if (adapter->vlgrp) { |
5c15bdec | 334 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
1dc32918 | 335 | if (hw->mng_cookie.status & |
2d7edb92 MC |
336 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
337 | e1000_vlan_rx_add_vid(netdev, vid); | |
338 | adapter->mng_vlan_id = vid; | |
339 | } else | |
340 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 | 341 | |
406874a7 | 342 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
96838a40 | 343 | (vid != old_vid) && |
5c15bdec | 344 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 345 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
346 | } else |
347 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
348 | } |
349 | } | |
b55ccb35 | 350 | |
64798845 | 351 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 352 | { |
1dc32918 JP |
353 | struct e1000_hw *hw = &adapter->hw; |
354 | ||
0fccd0e9 | 355 | if (adapter->en_mng_pt) { |
1dc32918 | 356 | u32 manc = er32(MANC); |
0fccd0e9 JG |
357 | |
358 | /* disable hardware interception of ARP */ | |
359 | manc &= ~(E1000_MANC_ARP_EN); | |
360 | ||
1dc32918 | 361 | ew32(MANC, manc); |
0fccd0e9 JG |
362 | } |
363 | } | |
364 | ||
64798845 | 365 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 366 | { |
1dc32918 JP |
367 | struct e1000_hw *hw = &adapter->hw; |
368 | ||
0fccd0e9 | 369 | if (adapter->en_mng_pt) { |
1dc32918 | 370 | u32 manc = er32(MANC); |
0fccd0e9 JG |
371 | |
372 | /* re-enable hardware interception of ARP */ | |
373 | manc |= E1000_MANC_ARP_EN; | |
374 | ||
1dc32918 | 375 | ew32(MANC, manc); |
0fccd0e9 JG |
376 | } |
377 | } | |
378 | ||
e0aac5a2 AK |
379 | /** |
380 | * e1000_configure - configure the hardware for RX and TX | |
381 | * @adapter = private board structure | |
382 | **/ | |
383 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
384 | { |
385 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 386 | int i; |
1da177e4 | 387 | |
db0ce50d | 388 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
389 | |
390 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 391 | e1000_init_manageability(adapter); |
1da177e4 LT |
392 | |
393 | e1000_configure_tx(adapter); | |
394 | e1000_setup_rctl(adapter); | |
395 | e1000_configure_rx(adapter); | |
72d64a43 JK |
396 | /* call E1000_DESC_UNUSED which always leaves |
397 | * at least 1 descriptor unused to make sure | |
398 | * next_to_use != next_to_clean */ | |
f56799ea | 399 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 400 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
401 | adapter->alloc_rx_buf(adapter, ring, |
402 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 403 | } |
e0aac5a2 AK |
404 | } |
405 | ||
406 | int e1000_up(struct e1000_adapter *adapter) | |
407 | { | |
1dc32918 JP |
408 | struct e1000_hw *hw = &adapter->hw; |
409 | ||
e0aac5a2 AK |
410 | /* hardware has been reset, we need to reload some things */ |
411 | e1000_configure(adapter); | |
412 | ||
413 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 414 | |
bea3348e | 415 | napi_enable(&adapter->napi); |
c3570acb | 416 | |
5de55624 MC |
417 | e1000_irq_enable(adapter); |
418 | ||
4cb9be7a JB |
419 | netif_wake_queue(adapter->netdev); |
420 | ||
79f3d399 | 421 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 422 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
423 | return 0; |
424 | } | |
425 | ||
79f05bf0 AK |
426 | /** |
427 | * e1000_power_up_phy - restore link in case the phy was powered down | |
428 | * @adapter: address of board private structure | |
429 | * | |
430 | * The phy may be powered down to save power and turn off link when the | |
431 | * driver is unloaded and wake on lan is not enabled (among others) | |
432 | * *** this routine MUST be followed by a call to e1000_reset *** | |
433 | * | |
434 | **/ | |
435 | ||
d658266e | 436 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 437 | { |
1dc32918 | 438 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 439 | u16 mii_reg = 0; |
79f05bf0 AK |
440 | |
441 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 442 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
443 | /* according to the manual, the phy will retain its |
444 | * settings across a power-down/up cycle */ | |
1dc32918 | 445 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 446 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 447 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
448 | } |
449 | } | |
450 | ||
451 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
452 | { | |
1dc32918 JP |
453 | struct e1000_hw *hw = &adapter->hw; |
454 | ||
61c2505f | 455 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 456 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
457 | * (a) WoL is enabled |
458 | * (b) AMT is active | |
459 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
460 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
461 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 462 | u16 mii_reg = 0; |
61c2505f | 463 | |
1dc32918 | 464 | switch (hw->mac_type) { |
61c2505f BA |
465 | case e1000_82540: |
466 | case e1000_82545: | |
467 | case e1000_82545_rev_3: | |
468 | case e1000_82546: | |
5377a416 | 469 | case e1000_ce4100: |
61c2505f BA |
470 | case e1000_82546_rev_3: |
471 | case e1000_82541: | |
472 | case e1000_82541_rev_2: | |
473 | case e1000_82547: | |
474 | case e1000_82547_rev_2: | |
1dc32918 | 475 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
476 | goto out; |
477 | break; | |
61c2505f BA |
478 | default: |
479 | goto out; | |
480 | } | |
1dc32918 | 481 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 482 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 483 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
484 | mdelay(1); |
485 | } | |
61c2505f BA |
486 | out: |
487 | return; | |
79f05bf0 AK |
488 | } |
489 | ||
64798845 | 490 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 | 491 | { |
a6c42322 | 492 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 493 | struct net_device *netdev = adapter->netdev; |
a6c42322 | 494 | u32 rctl, tctl; |
1da177e4 | 495 | |
1314bbf3 | 496 | |
a6c42322 JB |
497 | /* disable receives in the hardware */ |
498 | rctl = er32(RCTL); | |
499 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
500 | /* flush and sleep below */ | |
501 | ||
51851073 | 502 | netif_tx_disable(netdev); |
a6c42322 JB |
503 | |
504 | /* disable transmits in the hardware */ | |
505 | tctl = er32(TCTL); | |
506 | tctl &= ~E1000_TCTL_EN; | |
507 | ew32(TCTL, tctl); | |
508 | /* flush both disables and wait for them to finish */ | |
509 | E1000_WRITE_FLUSH(); | |
510 | msleep(10); | |
511 | ||
bea3348e | 512 | napi_disable(&adapter->napi); |
c3570acb | 513 | |
1da177e4 | 514 | e1000_irq_disable(adapter); |
c1605eb3 | 515 | |
ab08853f AC |
516 | /* |
517 | * Setting DOWN must be after irq_disable to prevent | |
518 | * a screaming interrupt. Setting DOWN also prevents | |
519 | * timers and tasks from rescheduling. | |
520 | */ | |
521 | set_bit(__E1000_DOWN, &adapter->flags); | |
522 | ||
1da177e4 LT |
523 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
524 | del_timer_sync(&adapter->watchdog_timer); | |
525 | del_timer_sync(&adapter->phy_info_timer); | |
526 | ||
1da177e4 LT |
527 | adapter->link_speed = 0; |
528 | adapter->link_duplex = 0; | |
529 | netif_carrier_off(netdev); | |
1da177e4 LT |
530 | |
531 | e1000_reset(adapter); | |
581d708e MC |
532 | e1000_clean_all_tx_rings(adapter); |
533 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 534 | } |
1da177e4 | 535 | |
38df7a39 | 536 | static void e1000_reinit_safe(struct e1000_adapter *adapter) |
338c15e4 JB |
537 | { |
538 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
539 | msleep(1); | |
540 | rtnl_lock(); | |
541 | e1000_down(adapter); | |
542 | e1000_up(adapter); | |
543 | rtnl_unlock(); | |
544 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
545 | } | |
546 | ||
64798845 | 547 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 | 548 | { |
338c15e4 JB |
549 | /* if rtnl_lock is not held the call path is bogus */ |
550 | ASSERT_RTNL(); | |
2db10a08 AK |
551 | WARN_ON(in_interrupt()); |
552 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
553 | msleep(1); | |
554 | e1000_down(adapter); | |
555 | e1000_up(adapter); | |
556 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
557 | } |
558 | ||
64798845 | 559 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 560 | { |
1dc32918 | 561 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 562 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
c3033b01 | 563 | bool legacy_pba_adjust = false; |
b7cb8c2c | 564 | u16 hwm; |
1da177e4 LT |
565 | |
566 | /* Repartition Pba for greater than 9k mtu | |
567 | * To take effect CTRL.RST is required. | |
568 | */ | |
569 | ||
1dc32918 | 570 | switch (hw->mac_type) { |
018ea44e BA |
571 | case e1000_82542_rev2_0: |
572 | case e1000_82542_rev2_1: | |
573 | case e1000_82543: | |
574 | case e1000_82544: | |
575 | case e1000_82540: | |
576 | case e1000_82541: | |
577 | case e1000_82541_rev_2: | |
c3033b01 | 578 | legacy_pba_adjust = true; |
018ea44e BA |
579 | pba = E1000_PBA_48K; |
580 | break; | |
581 | case e1000_82545: | |
582 | case e1000_82545_rev_3: | |
583 | case e1000_82546: | |
5377a416 | 584 | case e1000_ce4100: |
018ea44e BA |
585 | case e1000_82546_rev_3: |
586 | pba = E1000_PBA_48K; | |
587 | break; | |
2d7edb92 | 588 | case e1000_82547: |
0e6ef3e0 | 589 | case e1000_82547_rev_2: |
c3033b01 | 590 | legacy_pba_adjust = true; |
2d7edb92 MC |
591 | pba = E1000_PBA_30K; |
592 | break; | |
018ea44e BA |
593 | case e1000_undefined: |
594 | case e1000_num_macs: | |
2d7edb92 MC |
595 | break; |
596 | } | |
597 | ||
c3033b01 | 598 | if (legacy_pba_adjust) { |
b7cb8c2c | 599 | if (hw->max_frame_size > E1000_RXBUFFER_8192) |
018ea44e | 600 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 | 601 | |
1dc32918 | 602 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
603 | adapter->tx_fifo_head = 0; |
604 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
605 | adapter->tx_fifo_size = | |
606 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
607 | atomic_set(&adapter->tx_fifo_stall, 0); | |
608 | } | |
b7cb8c2c | 609 | } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
018ea44e | 610 | /* adjust PBA for jumbo frames */ |
1dc32918 | 611 | ew32(PBA, pba); |
018ea44e BA |
612 | |
613 | /* To maintain wire speed transmits, the Tx FIFO should be | |
b7cb8c2c | 614 | * large enough to accommodate two full transmit packets, |
018ea44e | 615 | * rounded up to the next 1KB and expressed in KB. Likewise, |
b7cb8c2c | 616 | * the Rx FIFO should be large enough to accommodate at least |
018ea44e BA |
617 | * one full receive packet and is similarly rounded up and |
618 | * expressed in KB. */ | |
1dc32918 | 619 | pba = er32(PBA); |
018ea44e BA |
620 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
621 | tx_space = pba >> 16; | |
622 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
623 | pba &= 0xffff; | |
b7cb8c2c JB |
624 | /* |
625 | * the tx fifo also stores 16 bytes of information about the tx | |
626 | * but don't include ethernet FCS because hardware appends it | |
627 | */ | |
628 | min_tx_space = (hw->max_frame_size + | |
629 | sizeof(struct e1000_tx_desc) - | |
630 | ETH_FCS_LEN) * 2; | |
9099cfb9 | 631 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 632 | min_tx_space >>= 10; |
b7cb8c2c JB |
633 | /* software strips receive CRC, so leave room for it */ |
634 | min_rx_space = hw->max_frame_size; | |
9099cfb9 | 635 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
636 | min_rx_space >>= 10; |
637 | ||
638 | /* If current Tx allocation is less than the min Tx FIFO size, | |
639 | * and the min Tx FIFO size is less than the current Rx FIFO | |
640 | * allocation, take space away from current Rx allocation */ | |
641 | if (tx_space < min_tx_space && | |
642 | ((min_tx_space - tx_space) < pba)) { | |
643 | pba = pba - (min_tx_space - tx_space); | |
644 | ||
645 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 646 | switch (hw->mac_type) { |
018ea44e BA |
647 | case e1000_82545 ... e1000_82546_rev_3: |
648 | pba &= ~(E1000_PBA_8K - 1); | |
649 | break; | |
650 | default: | |
651 | break; | |
652 | } | |
653 | ||
654 | /* if short on rx space, rx wins and must trump tx | |
655 | * adjustment or use Early Receive if available */ | |
1532ecea JB |
656 | if (pba < min_rx_space) |
657 | pba = min_rx_space; | |
018ea44e | 658 | } |
1da177e4 | 659 | } |
2d7edb92 | 660 | |
1dc32918 | 661 | ew32(PBA, pba); |
1da177e4 | 662 | |
b7cb8c2c JB |
663 | /* |
664 | * flow control settings: | |
665 | * The high water mark must be low enough to fit one full frame | |
666 | * (or the size used for early receive) above it in the Rx FIFO. | |
667 | * Set it to the lower of: | |
668 | * - 90% of the Rx FIFO size, and | |
669 | * - the full Rx FIFO size minus the early receive size (for parts | |
670 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
671 | * - the full Rx FIFO size minus one full frame | |
672 | */ | |
673 | hwm = min(((pba << 10) * 9 / 10), | |
674 | ((pba << 10) - hw->max_frame_size)); | |
675 | ||
676 | hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
677 | hw->fc_low_water = hw->fc_high_water - 8; | |
edbbb3ca | 678 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
1dc32918 JP |
679 | hw->fc_send_xon = 1; |
680 | hw->fc = hw->original_fc; | |
1da177e4 | 681 | |
2d7edb92 | 682 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
683 | e1000_reset_hw(hw); |
684 | if (hw->mac_type >= e1000_82544) | |
685 | ew32(WUC, 0); | |
09ae3e88 | 686 | |
1dc32918 | 687 | if (e1000_init_hw(hw)) |
feb8f478 | 688 | e_dev_err("Hardware Error\n"); |
2d7edb92 | 689 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
690 | |
691 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 | 692 | if (hw->mac_type >= e1000_82544 && |
1dc32918 JP |
693 | hw->autoneg == 1 && |
694 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
695 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
696 | /* clear phy power management bit if we are in gig only mode, |
697 | * which if enabled will attempt negotiation to 100Mb, which | |
698 | * can cause a loss of link at power off or driver unload */ | |
699 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 700 | ew32(CTRL, ctrl); |
3d5460a0 JB |
701 | } |
702 | ||
1da177e4 | 703 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 704 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 705 | |
1dc32918 JP |
706 | e1000_reset_adaptive(hw); |
707 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 | 708 | |
0fccd0e9 | 709 | e1000_release_manageability(adapter); |
1da177e4 LT |
710 | } |
711 | ||
67b3c27c AK |
712 | /** |
713 | * Dump the eeprom for users having checksum issues | |
714 | **/ | |
b4ea895d | 715 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
716 | { |
717 | struct net_device *netdev = adapter->netdev; | |
718 | struct ethtool_eeprom eeprom; | |
719 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
720 | u8 *data; | |
721 | int i; | |
722 | u16 csum_old, csum_new = 0; | |
723 | ||
724 | eeprom.len = ops->get_eeprom_len(netdev); | |
725 | eeprom.offset = 0; | |
726 | ||
727 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
728 | if (!data) { | |
675ad473 | 729 | pr_err("Unable to allocate memory to dump EEPROM data\n"); |
67b3c27c AK |
730 | return; |
731 | } | |
732 | ||
733 | ops->get_eeprom(netdev, &eeprom, data); | |
734 | ||
735 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
736 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
737 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
738 | csum_new += data[i] + (data[i + 1] << 8); | |
739 | csum_new = EEPROM_SUM - csum_new; | |
740 | ||
675ad473 ET |
741 | pr_err("/*********************/\n"); |
742 | pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); | |
743 | pr_err("Calculated : 0x%04x\n", csum_new); | |
67b3c27c | 744 | |
675ad473 ET |
745 | pr_err("Offset Values\n"); |
746 | pr_err("======== ======\n"); | |
67b3c27c AK |
747 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
748 | ||
675ad473 ET |
749 | pr_err("Include this output when contacting your support provider.\n"); |
750 | pr_err("This is not a software error! Something bad happened to\n"); | |
751 | pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); | |
752 | pr_err("result in further problems, possibly loss of data,\n"); | |
753 | pr_err("corruption or system hangs!\n"); | |
754 | pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); | |
755 | pr_err("which is invalid and requires you to set the proper MAC\n"); | |
756 | pr_err("address manually before continuing to enable this network\n"); | |
757 | pr_err("device. Please inspect the EEPROM dump and report the\n"); | |
758 | pr_err("issue to your hardware vendor or Intel Customer Support.\n"); | |
759 | pr_err("/*********************/\n"); | |
67b3c27c AK |
760 | |
761 | kfree(data); | |
762 | } | |
763 | ||
81250297 TI |
764 | /** |
765 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
766 | * @pdev: PCI device information struct | |
767 | * | |
768 | * Return true if an adapter needs ioport resources | |
769 | **/ | |
770 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
771 | { | |
772 | switch (pdev->device) { | |
773 | case E1000_DEV_ID_82540EM: | |
774 | case E1000_DEV_ID_82540EM_LOM: | |
775 | case E1000_DEV_ID_82540EP: | |
776 | case E1000_DEV_ID_82540EP_LOM: | |
777 | case E1000_DEV_ID_82540EP_LP: | |
778 | case E1000_DEV_ID_82541EI: | |
779 | case E1000_DEV_ID_82541EI_MOBILE: | |
780 | case E1000_DEV_ID_82541ER: | |
781 | case E1000_DEV_ID_82541ER_LOM: | |
782 | case E1000_DEV_ID_82541GI: | |
783 | case E1000_DEV_ID_82541GI_LF: | |
784 | case E1000_DEV_ID_82541GI_MOBILE: | |
785 | case E1000_DEV_ID_82544EI_COPPER: | |
786 | case E1000_DEV_ID_82544EI_FIBER: | |
787 | case E1000_DEV_ID_82544GC_COPPER: | |
788 | case E1000_DEV_ID_82544GC_LOM: | |
789 | case E1000_DEV_ID_82545EM_COPPER: | |
790 | case E1000_DEV_ID_82545EM_FIBER: | |
791 | case E1000_DEV_ID_82546EB_COPPER: | |
792 | case E1000_DEV_ID_82546EB_FIBER: | |
793 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
794 | return true; | |
795 | default: | |
796 | return false; | |
797 | } | |
798 | } | |
799 | ||
0e7614bc SH |
800 | static const struct net_device_ops e1000_netdev_ops = { |
801 | .ndo_open = e1000_open, | |
802 | .ndo_stop = e1000_close, | |
00829823 | 803 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
804 | .ndo_get_stats = e1000_get_stats, |
805 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
806 | .ndo_set_mac_address = e1000_set_mac, | |
807 | .ndo_tx_timeout = e1000_tx_timeout, | |
808 | .ndo_change_mtu = e1000_change_mtu, | |
809 | .ndo_do_ioctl = e1000_ioctl, | |
810 | .ndo_validate_addr = eth_validate_addr, | |
811 | ||
812 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
813 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
814 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
815 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
816 | .ndo_poll_controller = e1000_netpoll, | |
817 | #endif | |
818 | }; | |
819 | ||
e508be17 JB |
820 | /** |
821 | * e1000_init_hw_struct - initialize members of hw struct | |
822 | * @adapter: board private struct | |
823 | * @hw: structure used by e1000_hw.c | |
824 | * | |
825 | * Factors out initialization of the e1000_hw struct to its own function | |
826 | * that can be called very early at init (just after struct allocation). | |
827 | * Fields are initialized based on PCI device information and | |
828 | * OS network device settings (MTU size). | |
829 | * Returns negative error codes if MAC type setup fails. | |
830 | */ | |
831 | static int e1000_init_hw_struct(struct e1000_adapter *adapter, | |
832 | struct e1000_hw *hw) | |
833 | { | |
834 | struct pci_dev *pdev = adapter->pdev; | |
835 | ||
836 | /* PCI config space info */ | |
837 | hw->vendor_id = pdev->vendor; | |
838 | hw->device_id = pdev->device; | |
839 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
840 | hw->subsystem_id = pdev->subsystem_device; | |
841 | hw->revision_id = pdev->revision; | |
842 | ||
843 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
844 | ||
845 | hw->max_frame_size = adapter->netdev->mtu + | |
846 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
847 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
848 | ||
849 | /* identify the MAC */ | |
850 | if (e1000_set_mac_type(hw)) { | |
851 | e_err(probe, "Unknown MAC Type\n"); | |
852 | return -EIO; | |
853 | } | |
854 | ||
855 | switch (hw->mac_type) { | |
856 | default: | |
857 | break; | |
858 | case e1000_82541: | |
859 | case e1000_82547: | |
860 | case e1000_82541_rev_2: | |
861 | case e1000_82547_rev_2: | |
862 | hw->phy_init_script = 1; | |
863 | break; | |
864 | } | |
865 | ||
866 | e1000_set_media_type(hw); | |
867 | e1000_get_bus_info(hw); | |
868 | ||
869 | hw->wait_autoneg_complete = false; | |
870 | hw->tbi_compatibility_en = true; | |
871 | hw->adaptive_ifs = true; | |
872 | ||
873 | /* Copper options */ | |
874 | ||
875 | if (hw->media_type == e1000_media_type_copper) { | |
876 | hw->mdix = AUTO_ALL_MODES; | |
877 | hw->disable_polarity_correction = false; | |
878 | hw->master_slave = E1000_MASTER_SLAVE; | |
879 | } | |
880 | ||
881 | return 0; | |
882 | } | |
883 | ||
1da177e4 LT |
884 | /** |
885 | * e1000_probe - Device Initialization Routine | |
886 | * @pdev: PCI device information struct | |
887 | * @ent: entry in e1000_pci_tbl | |
888 | * | |
889 | * Returns 0 on success, negative on failure | |
890 | * | |
891 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
892 | * The OS initialization, configuring of the adapter private structure, | |
893 | * and a hardware reset occur. | |
894 | **/ | |
1dc32918 JP |
895 | static int __devinit e1000_probe(struct pci_dev *pdev, |
896 | const struct pci_device_id *ent) | |
1da177e4 LT |
897 | { |
898 | struct net_device *netdev; | |
899 | struct e1000_adapter *adapter; | |
1dc32918 | 900 | struct e1000_hw *hw; |
2d7edb92 | 901 | |
1da177e4 | 902 | static int cards_found = 0; |
120cd576 | 903 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 904 | int i, err, pci_using_dac; |
406874a7 | 905 | u16 eeprom_data = 0; |
5377a416 | 906 | u16 tmp = 0; |
406874a7 | 907 | u16 eeprom_apme_mask = E1000_EEPROM_APME; |
81250297 | 908 | int bars, need_ioport; |
0795af57 | 909 | |
81250297 TI |
910 | /* do not allocate ioport bars when not needed */ |
911 | need_ioport = e1000_is_need_ioport(pdev); | |
912 | if (need_ioport) { | |
913 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
914 | err = pci_enable_device(pdev); | |
915 | } else { | |
916 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
4d7155b9 | 917 | err = pci_enable_device_mem(pdev); |
81250297 | 918 | } |
c7be73bc | 919 | if (err) |
1da177e4 LT |
920 | return err; |
921 | ||
81250297 | 922 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 923 | if (err) |
6dd62ab0 | 924 | goto err_pci_reg; |
1da177e4 LT |
925 | |
926 | pci_set_master(pdev); | |
dbb5aaeb NN |
927 | err = pci_save_state(pdev); |
928 | if (err) | |
929 | goto err_alloc_etherdev; | |
1da177e4 | 930 | |
6dd62ab0 | 931 | err = -ENOMEM; |
1da177e4 | 932 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 933 | if (!netdev) |
1da177e4 | 934 | goto err_alloc_etherdev; |
1da177e4 | 935 | |
1da177e4 LT |
936 | SET_NETDEV_DEV(netdev, &pdev->dev); |
937 | ||
938 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 939 | adapter = netdev_priv(netdev); |
1da177e4 LT |
940 | adapter->netdev = netdev; |
941 | adapter->pdev = pdev; | |
1da177e4 | 942 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
943 | adapter->bars = bars; |
944 | adapter->need_ioport = need_ioport; | |
1da177e4 | 945 | |
1dc32918 JP |
946 | hw = &adapter->hw; |
947 | hw->back = adapter; | |
948 | ||
6dd62ab0 | 949 | err = -EIO; |
275f165f | 950 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 951 | if (!hw->hw_addr) |
1da177e4 | 952 | goto err_ioremap; |
1da177e4 | 953 | |
81250297 TI |
954 | if (adapter->need_ioport) { |
955 | for (i = BAR_1; i <= BAR_5; i++) { | |
956 | if (pci_resource_len(pdev, i) == 0) | |
957 | continue; | |
958 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
959 | hw->io_base = pci_resource_start(pdev, i); | |
960 | break; | |
961 | } | |
1da177e4 LT |
962 | } |
963 | } | |
964 | ||
e508be17 JB |
965 | /* make ready for any if (hw->...) below */ |
966 | err = e1000_init_hw_struct(adapter, hw); | |
967 | if (err) | |
968 | goto err_sw_init; | |
969 | ||
970 | /* | |
971 | * there is a workaround being applied below that limits | |
972 | * 64-bit DMA addresses to 64-bit hardware. There are some | |
973 | * 32-bit adapters that Tx hang when given 64-bit DMA addresses | |
974 | */ | |
975 | pci_using_dac = 0; | |
976 | if ((hw->bus_type == e1000_bus_type_pcix) && | |
977 | !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { | |
978 | /* | |
979 | * according to DMA-API-HOWTO, coherent calls will always | |
980 | * succeed if the set call did | |
981 | */ | |
982 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); | |
983 | pci_using_dac = 1; | |
e508be17 | 984 | } else { |
19a0b67a DN |
985 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
986 | if (err) { | |
987 | pr_err("No usable DMA config, aborting\n"); | |
988 | goto err_dma; | |
989 | } | |
990 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
e508be17 JB |
991 | } |
992 | ||
0e7614bc | 993 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 994 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 995 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 996 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 997 | |
0eb5a34c | 998 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 999 | |
1da177e4 LT |
1000 | adapter->bd_number = cards_found; |
1001 | ||
1002 | /* setup the private structure */ | |
1003 | ||
c7be73bc JP |
1004 | err = e1000_sw_init(adapter); |
1005 | if (err) | |
1da177e4 LT |
1006 | goto err_sw_init; |
1007 | ||
6dd62ab0 | 1008 | err = -EIO; |
5377a416 DB |
1009 | if (hw->mac_type == e1000_ce4100) { |
1010 | ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); | |
1011 | ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, | |
1012 | pci_resource_len(pdev, BAR_1)); | |
1013 | ||
1014 | if (!ce4100_gbe_mdio_base_virt) | |
1015 | goto err_mdio_ioremap; | |
1016 | } | |
2d7edb92 | 1017 | |
1dc32918 | 1018 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
1019 | netdev->features = NETIF_F_SG | |
1020 | NETIF_F_HW_CSUM | | |
1021 | NETIF_F_HW_VLAN_TX | | |
1022 | NETIF_F_HW_VLAN_RX | | |
1023 | NETIF_F_HW_VLAN_FILTER; | |
1024 | } | |
1025 | ||
1dc32918 JP |
1026 | if ((hw->mac_type >= e1000_82544) && |
1027 | (hw->mac_type != e1000_82547)) | |
1da177e4 | 1028 | netdev->features |= NETIF_F_TSO; |
2d7edb92 | 1029 | |
7b872a55 | 1030 | if (pci_using_dac) { |
1da177e4 | 1031 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
1032 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
1033 | } | |
1da177e4 | 1034 | |
20501a69 | 1035 | netdev->vlan_features |= NETIF_F_TSO; |
20501a69 PM |
1036 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
1037 | netdev->vlan_features |= NETIF_F_SG; | |
1038 | ||
1dc32918 | 1039 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 1040 | |
cd94dd0b | 1041 | /* initialize eeprom parameters */ |
1dc32918 | 1042 | if (e1000_init_eeprom_params(hw)) { |
feb8f478 | 1043 | e_err(probe, "EEPROM initialization failed\n"); |
6dd62ab0 | 1044 | goto err_eeprom; |
cd94dd0b AK |
1045 | } |
1046 | ||
96838a40 | 1047 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1048 | * put the device in a known good starting state */ |
96838a40 | 1049 | |
1dc32918 | 1050 | e1000_reset_hw(hw); |
1da177e4 LT |
1051 | |
1052 | /* make sure the EEPROM is good */ | |
1dc32918 | 1053 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
feb8f478 | 1054 | e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1055 | e1000_dump_eeprom(adapter); |
1056 | /* | |
1057 | * set MAC address to all zeroes to invalidate and temporary | |
1058 | * disable this device for the user. This blocks regular | |
1059 | * traffic while still permitting ethtool ioctls from reaching | |
1060 | * the hardware as well as allowing the user to run the | |
1061 | * interface after manually setting a hw addr using | |
1062 | * `ip set address` | |
1063 | */ | |
1dc32918 | 1064 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
1065 | } else { |
1066 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 1067 | if (e1000_read_mac_addr(hw)) |
feb8f478 | 1068 | e_err(probe, "EEPROM Read Error\n"); |
1da177e4 | 1069 | } |
67b3c27c | 1070 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
1071 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
1072 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 1073 | |
67b3c27c | 1074 | if (!is_valid_ether_addr(netdev->perm_addr)) |
feb8f478 | 1075 | e_err(probe, "Invalid MAC Address\n"); |
1da177e4 | 1076 | |
1da177e4 | 1077 | init_timer(&adapter->tx_fifo_stall_timer); |
c061b18d | 1078 | adapter->tx_fifo_stall_timer.function = e1000_82547_tx_fifo_stall; |
e982f17c | 1079 | adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
1da177e4 LT |
1080 | |
1081 | init_timer(&adapter->watchdog_timer); | |
c061b18d | 1082 | adapter->watchdog_timer.function = e1000_watchdog; |
1da177e4 LT |
1083 | adapter->watchdog_timer.data = (unsigned long) adapter; |
1084 | ||
1da177e4 | 1085 | init_timer(&adapter->phy_info_timer); |
c061b18d | 1086 | adapter->phy_info_timer.function = e1000_update_phy_info; |
e982f17c | 1087 | adapter->phy_info_timer.data = (unsigned long)adapter; |
1da177e4 | 1088 | |
5cf42fcd | 1089 | INIT_WORK(&adapter->fifo_stall_task, e1000_82547_tx_fifo_stall_task); |
65f27f38 | 1090 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
5cf42fcd | 1091 | INIT_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); |
1da177e4 | 1092 | |
1da177e4 LT |
1093 | e1000_check_options(adapter); |
1094 | ||
1095 | /* Initial Wake on LAN setting | |
1096 | * If APM wake is enabled in the EEPROM, | |
1097 | * enable the ACPI Magic Packet filter | |
1098 | */ | |
1099 | ||
1dc32918 | 1100 | switch (hw->mac_type) { |
1da177e4 LT |
1101 | case e1000_82542_rev2_0: |
1102 | case e1000_82542_rev2_1: | |
1103 | case e1000_82543: | |
1104 | break; | |
1105 | case e1000_82544: | |
1dc32918 | 1106 | e1000_read_eeprom(hw, |
1da177e4 LT |
1107 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
1108 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1109 | break; | |
1110 | case e1000_82546: | |
1111 | case e1000_82546_rev_3: | |
1dc32918 JP |
1112 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
1113 | e1000_read_eeprom(hw, | |
1da177e4 LT |
1114 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
1115 | break; | |
1116 | } | |
1117 | /* Fall Through */ | |
1118 | default: | |
1dc32918 | 1119 | e1000_read_eeprom(hw, |
1da177e4 LT |
1120 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1121 | break; | |
1122 | } | |
96838a40 | 1123 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1124 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1125 | ||
1126 | /* now that we have the eeprom settings, apply the special cases | |
1127 | * where the eeprom may be wrong or the board simply won't support | |
1128 | * wake on lan on a particular port */ | |
1129 | switch (pdev->device) { | |
1130 | case E1000_DEV_ID_82546GB_PCIE: | |
1131 | adapter->eeprom_wol = 0; | |
1132 | break; | |
1133 | case E1000_DEV_ID_82546EB_FIBER: | |
1134 | case E1000_DEV_ID_82546GB_FIBER: | |
120cd576 JB |
1135 | /* Wake events only supported on port A for dual fiber |
1136 | * regardless of eeprom setting */ | |
1dc32918 | 1137 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1138 | adapter->eeprom_wol = 0; |
1139 | break; | |
1140 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
1141 | /* if quad port adapter, disable WoL on all but port A */ | |
1142 | if (global_quad_port_a != 0) | |
1143 | adapter->eeprom_wol = 0; | |
1144 | else | |
1145 | adapter->quad_port_a = 1; | |
1146 | /* Reset for multiple quad port adapters */ | |
1147 | if (++global_quad_port_a == 4) | |
1148 | global_quad_port_a = 0; | |
1149 | break; | |
1150 | } | |
1151 | ||
1152 | /* initialize the wol settings based on the eeprom settings */ | |
1153 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1154 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1155 | |
5377a416 DB |
1156 | /* Auto detect PHY address */ |
1157 | if (hw->mac_type == e1000_ce4100) { | |
1158 | for (i = 0; i < 32; i++) { | |
1159 | hw->phy_addr = i; | |
1160 | e1000_read_phy_reg(hw, PHY_ID2, &tmp); | |
1161 | if (tmp == 0 || tmp == 0xFF) { | |
1162 | if (i == 31) | |
1163 | goto err_eeprom; | |
1164 | continue; | |
1165 | } else | |
1166 | break; | |
1167 | } | |
1168 | } | |
1169 | ||
675ad473 ET |
1170 | /* reset the hardware with the new settings */ |
1171 | e1000_reset(adapter); | |
1172 | ||
1173 | strcpy(netdev->name, "eth%d"); | |
1174 | err = register_netdev(netdev); | |
1175 | if (err) | |
1176 | goto err_register; | |
1177 | ||
fb3d47d4 | 1178 | /* print bus type/speed/width info */ |
feb8f478 | 1179 | e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
7837e58c JP |
1180 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
1181 | ((hw->bus_speed == e1000_bus_speed_133) ? 133 : | |
1182 | (hw->bus_speed == e1000_bus_speed_120) ? 120 : | |
1183 | (hw->bus_speed == e1000_bus_speed_100) ? 100 : | |
1184 | (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), | |
1185 | ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), | |
1186 | netdev->dev_addr); | |
1314bbf3 | 1187 | |
eb62efd2 JB |
1188 | /* carrier off reporting is important to ethtool even BEFORE open */ |
1189 | netif_carrier_off(netdev); | |
1190 | ||
feb8f478 | 1191 | e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
1da177e4 LT |
1192 | |
1193 | cards_found++; | |
1194 | return 0; | |
1195 | ||
1196 | err_register: | |
6dd62ab0 | 1197 | err_eeprom: |
1532ecea | 1198 | e1000_phy_hw_reset(hw); |
6dd62ab0 | 1199 | |
1dc32918 JP |
1200 | if (hw->flash_address) |
1201 | iounmap(hw->flash_address); | |
6dd62ab0 VA |
1202 | kfree(adapter->tx_ring); |
1203 | kfree(adapter->rx_ring); | |
e508be17 | 1204 | err_dma: |
1da177e4 | 1205 | err_sw_init: |
5377a416 DB |
1206 | err_mdio_ioremap: |
1207 | iounmap(ce4100_gbe_mdio_base_virt); | |
1dc32918 | 1208 | iounmap(hw->hw_addr); |
1da177e4 LT |
1209 | err_ioremap: |
1210 | free_netdev(netdev); | |
1211 | err_alloc_etherdev: | |
81250297 | 1212 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 | 1213 | err_pci_reg: |
6dd62ab0 | 1214 | pci_disable_device(pdev); |
1da177e4 LT |
1215 | return err; |
1216 | } | |
1217 | ||
1218 | /** | |
1219 | * e1000_remove - Device Removal Routine | |
1220 | * @pdev: PCI device information struct | |
1221 | * | |
1222 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1223 | * that it should release a PCI device. The could be caused by a | |
1224 | * Hot-Plug event, or because the driver is going to be removed from | |
1225 | * memory. | |
1226 | **/ | |
1227 | ||
64798845 | 1228 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1229 | { |
1230 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1231 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1232 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1233 | |
baa34745 JB |
1234 | set_bit(__E1000_DOWN, &adapter->flags); |
1235 | del_timer_sync(&adapter->tx_fifo_stall_timer); | |
1236 | del_timer_sync(&adapter->watchdog_timer); | |
1237 | del_timer_sync(&adapter->phy_info_timer); | |
1238 | ||
28e53bdd | 1239 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1240 | |
0fccd0e9 | 1241 | e1000_release_manageability(adapter); |
1da177e4 | 1242 | |
bea3348e SH |
1243 | unregister_netdev(netdev); |
1244 | ||
1532ecea | 1245 | e1000_phy_hw_reset(hw); |
1da177e4 | 1246 | |
24025e4e MC |
1247 | kfree(adapter->tx_ring); |
1248 | kfree(adapter->rx_ring); | |
24025e4e | 1249 | |
1dc32918 JP |
1250 | iounmap(hw->hw_addr); |
1251 | if (hw->flash_address) | |
1252 | iounmap(hw->flash_address); | |
81250297 | 1253 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1254 | |
1255 | free_netdev(netdev); | |
1256 | ||
1257 | pci_disable_device(pdev); | |
1258 | } | |
1259 | ||
1260 | /** | |
1261 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1262 | * @adapter: board private structure to initialize | |
1263 | * | |
1264 | * e1000_sw_init initializes the Adapter private data structure. | |
e508be17 | 1265 | * e1000_init_hw_struct MUST be called before this function |
1da177e4 LT |
1266 | **/ |
1267 | ||
64798845 | 1268 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 | 1269 | { |
eb0f8054 | 1270 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 | 1271 | |
f56799ea JK |
1272 | adapter->num_tx_queues = 1; |
1273 | adapter->num_rx_queues = 1; | |
581d708e MC |
1274 | |
1275 | if (e1000_alloc_queues(adapter)) { | |
feb8f478 | 1276 | e_err(probe, "Unable to allocate memory for queues\n"); |
581d708e MC |
1277 | return -ENOMEM; |
1278 | } | |
1279 | ||
47313054 | 1280 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1281 | e1000_irq_disable(adapter); |
1282 | ||
1da177e4 | 1283 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1284 | |
1314bbf3 AK |
1285 | set_bit(__E1000_DOWN, &adapter->flags); |
1286 | ||
1da177e4 LT |
1287 | return 0; |
1288 | } | |
1289 | ||
581d708e MC |
1290 | /** |
1291 | * e1000_alloc_queues - Allocate memory for all rings | |
1292 | * @adapter: board private structure to initialize | |
1293 | * | |
1294 | * We allocate one ring per queue at run-time since we don't know the | |
3e1d7cd2 | 1295 | * number of queues at compile-time. |
581d708e MC |
1296 | **/ |
1297 | ||
64798845 | 1298 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1299 | { |
1c7e5b12 YB |
1300 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1301 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1302 | if (!adapter->tx_ring) |
1303 | return -ENOMEM; | |
581d708e | 1304 | |
1c7e5b12 YB |
1305 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1306 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1307 | if (!adapter->rx_ring) { |
1308 | kfree(adapter->tx_ring); | |
1309 | return -ENOMEM; | |
1310 | } | |
581d708e | 1311 | |
581d708e MC |
1312 | return E1000_SUCCESS; |
1313 | } | |
1314 | ||
1da177e4 LT |
1315 | /** |
1316 | * e1000_open - Called when a network interface is made active | |
1317 | * @netdev: network interface device structure | |
1318 | * | |
1319 | * Returns 0 on success, negative value on failure | |
1320 | * | |
1321 | * The open entry point is called when a network interface is made | |
1322 | * active by the system (IFF_UP). At this point all resources needed | |
1323 | * for transmit and receive operations are allocated, the interrupt | |
1324 | * handler is registered with the OS, the watchdog timer is started, | |
1325 | * and the stack is notified that the interface is ready. | |
1326 | **/ | |
1327 | ||
64798845 | 1328 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1329 | { |
60490fe0 | 1330 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1331 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1332 | int err; |
1333 | ||
2db10a08 | 1334 | /* disallow open during test */ |
1314bbf3 | 1335 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1336 | return -EBUSY; |
1337 | ||
eb62efd2 JB |
1338 | netif_carrier_off(netdev); |
1339 | ||
1da177e4 | 1340 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1341 | err = e1000_setup_all_tx_resources(adapter); |
1342 | if (err) | |
1da177e4 LT |
1343 | goto err_setup_tx; |
1344 | ||
1345 | /* allocate receive descriptors */ | |
e0aac5a2 | 1346 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1347 | if (err) |
e0aac5a2 | 1348 | goto err_setup_rx; |
b5bf28cd | 1349 | |
79f05bf0 AK |
1350 | e1000_power_up_phy(adapter); |
1351 | ||
2d7edb92 | 1352 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1353 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1354 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1355 | e1000_update_mng_vlan(adapter); | |
1356 | } | |
1da177e4 | 1357 | |
e0aac5a2 AK |
1358 | /* before we allocate an interrupt, we must be ready to handle it. |
1359 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1360 | * as soon as we call pci_request_irq, so we have to setup our | |
1361 | * clean_rx handler before we do so. */ | |
1362 | e1000_configure(adapter); | |
1363 | ||
1364 | err = e1000_request_irq(adapter); | |
1365 | if (err) | |
1366 | goto err_req_irq; | |
1367 | ||
1368 | /* From here on the code is the same as e1000_up() */ | |
1369 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1370 | ||
bea3348e | 1371 | napi_enable(&adapter->napi); |
47313054 | 1372 | |
e0aac5a2 AK |
1373 | e1000_irq_enable(adapter); |
1374 | ||
076152d5 BH |
1375 | netif_start_queue(netdev); |
1376 | ||
e0aac5a2 | 1377 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1378 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1379 | |
1da177e4 LT |
1380 | return E1000_SUCCESS; |
1381 | ||
b5bf28cd | 1382 | err_req_irq: |
e0aac5a2 | 1383 | e1000_power_down_phy(adapter); |
581d708e | 1384 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1385 | err_setup_rx: |
581d708e | 1386 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1387 | err_setup_tx: |
1388 | e1000_reset(adapter); | |
1389 | ||
1390 | return err; | |
1391 | } | |
1392 | ||
1393 | /** | |
1394 | * e1000_close - Disables a network interface | |
1395 | * @netdev: network interface device structure | |
1396 | * | |
1397 | * Returns 0, this is not allowed to fail | |
1398 | * | |
1399 | * The close entry point is called when an interface is de-activated | |
1400 | * by the OS. The hardware is still under the drivers control, but | |
1401 | * needs to be disabled. A global MAC reset is issued to stop the | |
1402 | * hardware, and all transmit and receive resources are freed. | |
1403 | **/ | |
1404 | ||
64798845 | 1405 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1406 | { |
60490fe0 | 1407 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1408 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1409 | |
2db10a08 | 1410 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1411 | e1000_down(adapter); |
79f05bf0 | 1412 | e1000_power_down_phy(adapter); |
2db10a08 | 1413 | e1000_free_irq(adapter); |
1da177e4 | 1414 | |
581d708e MC |
1415 | e1000_free_all_tx_resources(adapter); |
1416 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1417 | |
4666560a BA |
1418 | /* kill manageability vlan ID if supported, but not if a vlan with |
1419 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1420 | if ((hw->mng_cookie.status & |
4666560a BA |
1421 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1422 | !(adapter->vlgrp && | |
5c15bdec | 1423 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1424 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1425 | } | |
b55ccb35 | 1426 | |
1da177e4 LT |
1427 | return 0; |
1428 | } | |
1429 | ||
1430 | /** | |
1431 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1432 | * @adapter: address of board private structure | |
2d7edb92 MC |
1433 | * @start: address of beginning of memory |
1434 | * @len: length of memory | |
1da177e4 | 1435 | **/ |
64798845 JP |
1436 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1437 | unsigned long len) | |
1da177e4 | 1438 | { |
1dc32918 | 1439 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1440 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1441 | unsigned long end = begin + len; |
1442 | ||
2648345f MC |
1443 | /* First rev 82545 and 82546 need to not allow any memory |
1444 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 | 1445 | if (hw->mac_type == e1000_82545 || |
5377a416 | 1446 | hw->mac_type == e1000_ce4100 || |
1dc32918 | 1447 | hw->mac_type == e1000_82546) { |
c3033b01 | 1448 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1449 | } |
1450 | ||
c3033b01 | 1451 | return true; |
1da177e4 LT |
1452 | } |
1453 | ||
1454 | /** | |
1455 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1456 | * @adapter: board private structure | |
581d708e | 1457 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1458 | * |
1459 | * Return 0 on success, negative on failure | |
1460 | **/ | |
1461 | ||
64798845 JP |
1462 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1463 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1464 | { |
1da177e4 LT |
1465 | struct pci_dev *pdev = adapter->pdev; |
1466 | int size; | |
1467 | ||
1468 | size = sizeof(struct e1000_buffer) * txdr->count; | |
89bf67f1 | 1469 | txdr->buffer_info = vzalloc(size); |
96838a40 | 1470 | if (!txdr->buffer_info) { |
feb8f478 ET |
1471 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1472 | "ring\n"); | |
1da177e4 LT |
1473 | return -ENOMEM; |
1474 | } | |
1da177e4 LT |
1475 | |
1476 | /* round up to nearest 4K */ | |
1477 | ||
1478 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1479 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 | 1480 | |
b16f53be NN |
1481 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
1482 | GFP_KERNEL); | |
96838a40 | 1483 | if (!txdr->desc) { |
1da177e4 | 1484 | setup_tx_desc_die: |
1da177e4 | 1485 | vfree(txdr->buffer_info); |
feb8f478 ET |
1486 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1487 | "ring\n"); | |
1da177e4 LT |
1488 | return -ENOMEM; |
1489 | } | |
1490 | ||
2648345f | 1491 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1492 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1493 | void *olddesc = txdr->desc; | |
1494 | dma_addr_t olddma = txdr->dma; | |
feb8f478 | 1495 | e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
675ad473 | 1496 | txdr->size, txdr->desc); |
2648345f | 1497 | /* Try again, without freeing the previous */ |
b16f53be NN |
1498 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
1499 | &txdr->dma, GFP_KERNEL); | |
2648345f | 1500 | /* Failed allocation, critical failure */ |
96838a40 | 1501 | if (!txdr->desc) { |
b16f53be NN |
1502 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1503 | olddma); | |
1da177e4 LT |
1504 | goto setup_tx_desc_die; |
1505 | } | |
1506 | ||
1507 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1508 | /* give up */ | |
b16f53be NN |
1509 | dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
1510 | txdr->dma); | |
1511 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, | |
1512 | olddma); | |
feb8f478 | 1513 | e_err(probe, "Unable to allocate aligned memory " |
675ad473 | 1514 | "for the transmit descriptor ring\n"); |
1da177e4 LT |
1515 | vfree(txdr->buffer_info); |
1516 | return -ENOMEM; | |
1517 | } else { | |
2648345f | 1518 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1519 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1520 | olddma); | |
1da177e4 LT |
1521 | } |
1522 | } | |
1523 | memset(txdr->desc, 0, txdr->size); | |
1524 | ||
1525 | txdr->next_to_use = 0; | |
1526 | txdr->next_to_clean = 0; | |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
581d708e MC |
1531 | /** |
1532 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1533 | * (Descriptors) for all queues | |
1534 | * @adapter: board private structure | |
1535 | * | |
581d708e MC |
1536 | * Return 0 on success, negative on failure |
1537 | **/ | |
1538 | ||
64798845 | 1539 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1540 | { |
1541 | int i, err = 0; | |
1542 | ||
f56799ea | 1543 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1544 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1545 | if (err) { | |
feb8f478 | 1546 | e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
3fbbc72e VA |
1547 | for (i-- ; i >= 0; i--) |
1548 | e1000_free_tx_resources(adapter, | |
1549 | &adapter->tx_ring[i]); | |
581d708e MC |
1550 | break; |
1551 | } | |
1552 | } | |
1553 | ||
1554 | return err; | |
1555 | } | |
1556 | ||
1da177e4 LT |
1557 | /** |
1558 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1559 | * @adapter: board private structure | |
1560 | * | |
1561 | * Configure the Tx unit of the MAC after a reset. | |
1562 | **/ | |
1563 | ||
64798845 | 1564 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1565 | { |
406874a7 | 1566 | u64 tdba; |
581d708e | 1567 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1568 | u32 tdlen, tctl, tipg; |
406874a7 | 1569 | u32 ipgr1, ipgr2; |
1da177e4 LT |
1570 | |
1571 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1572 | ||
f56799ea | 1573 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1574 | case 1: |
1575 | default: | |
581d708e MC |
1576 | tdba = adapter->tx_ring[0].dma; |
1577 | tdlen = adapter->tx_ring[0].count * | |
1578 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1579 | ew32(TDLEN, tdlen); |
1580 | ew32(TDBAH, (tdba >> 32)); | |
1581 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1582 | ew32(TDT, 0); | |
1583 | ew32(TDH, 0); | |
6a951698 AK |
1584 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1585 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1586 | break; |
1587 | } | |
1da177e4 LT |
1588 | |
1589 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1532ecea | 1590 | if ((hw->media_type == e1000_media_type_fiber || |
d89b6c67 | 1591 | hw->media_type == e1000_media_type_internal_serdes)) |
0fadb059 JK |
1592 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1593 | else | |
1594 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1595 | ||
581d708e | 1596 | switch (hw->mac_type) { |
1da177e4 LT |
1597 | case e1000_82542_rev2_0: |
1598 | case e1000_82542_rev2_1: | |
1599 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1600 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1601 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1602 | break; |
1603 | default: | |
0fadb059 JK |
1604 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1605 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1606 | break; | |
1da177e4 | 1607 | } |
0fadb059 JK |
1608 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1609 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1610 | ew32(TIPG, tipg); |
1da177e4 LT |
1611 | |
1612 | /* Set the Tx Interrupt Delay register */ | |
1613 | ||
1dc32918 | 1614 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1615 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1616 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1617 | |
1618 | /* Program the Transmit Control Register */ | |
1619 | ||
1dc32918 | 1620 | tctl = er32(TCTL); |
1da177e4 | 1621 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1622 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1623 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1624 | ||
581d708e | 1625 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1626 | |
1627 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1628 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1629 | ||
1630 | /* only set IDE if we are delaying interrupts using the timers */ | |
1631 | if (adapter->tx_int_delay) | |
1632 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1633 | |
581d708e | 1634 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1635 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1636 | else | |
1637 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1638 | ||
1639 | /* Cache if we're 82544 running in PCI-X because we'll | |
1640 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1641 | if (hw->mac_type == e1000_82544 && |
1642 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1643 | adapter->pcix_82544 = 1; |
7e6c9861 | 1644 | |
1dc32918 | 1645 | ew32(TCTL, tctl); |
7e6c9861 | 1646 | |
1da177e4 LT |
1647 | } |
1648 | ||
1649 | /** | |
1650 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1651 | * @adapter: board private structure | |
581d708e | 1652 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1653 | * |
1654 | * Returns 0 on success, negative on failure | |
1655 | **/ | |
1656 | ||
64798845 JP |
1657 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1658 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1659 | { |
1da177e4 | 1660 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1661 | int size, desc_len; |
1da177e4 LT |
1662 | |
1663 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
89bf67f1 | 1664 | rxdr->buffer_info = vzalloc(size); |
581d708e | 1665 | if (!rxdr->buffer_info) { |
feb8f478 ET |
1666 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1667 | "ring\n"); | |
1da177e4 LT |
1668 | return -ENOMEM; |
1669 | } | |
1da177e4 | 1670 | |
1532ecea | 1671 | desc_len = sizeof(struct e1000_rx_desc); |
2d7edb92 | 1672 | |
1da177e4 LT |
1673 | /* Round up to nearest 4K */ |
1674 | ||
2d7edb92 | 1675 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1676 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 | 1677 | |
b16f53be NN |
1678 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
1679 | GFP_KERNEL); | |
1da177e4 | 1680 | |
581d708e | 1681 | if (!rxdr->desc) { |
feb8f478 ET |
1682 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1683 | "ring\n"); | |
1da177e4 | 1684 | setup_rx_desc_die: |
1da177e4 LT |
1685 | vfree(rxdr->buffer_info); |
1686 | return -ENOMEM; | |
1687 | } | |
1688 | ||
2648345f | 1689 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1690 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1691 | void *olddesc = rxdr->desc; | |
1692 | dma_addr_t olddma = rxdr->dma; | |
feb8f478 | 1693 | e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
675ad473 | 1694 | rxdr->size, rxdr->desc); |
2648345f | 1695 | /* Try again, without freeing the previous */ |
b16f53be NN |
1696 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
1697 | &rxdr->dma, GFP_KERNEL); | |
2648345f | 1698 | /* Failed allocation, critical failure */ |
581d708e | 1699 | if (!rxdr->desc) { |
b16f53be NN |
1700 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1701 | olddma); | |
feb8f478 ET |
1702 | e_err(probe, "Unable to allocate memory for the Rx " |
1703 | "descriptor ring\n"); | |
1da177e4 LT |
1704 | goto setup_rx_desc_die; |
1705 | } | |
1706 | ||
1707 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1708 | /* give up */ | |
b16f53be NN |
1709 | dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
1710 | rxdr->dma); | |
1711 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, | |
1712 | olddma); | |
feb8f478 ET |
1713 | e_err(probe, "Unable to allocate aligned memory for " |
1714 | "the Rx descriptor ring\n"); | |
581d708e | 1715 | goto setup_rx_desc_die; |
1da177e4 | 1716 | } else { |
2648345f | 1717 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1718 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1719 | olddma); | |
1da177e4 LT |
1720 | } |
1721 | } | |
1722 | memset(rxdr->desc, 0, rxdr->size); | |
1723 | ||
1724 | rxdr->next_to_clean = 0; | |
1725 | rxdr->next_to_use = 0; | |
edbbb3ca | 1726 | rxdr->rx_skb_top = NULL; |
1da177e4 LT |
1727 | |
1728 | return 0; | |
1729 | } | |
1730 | ||
581d708e MC |
1731 | /** |
1732 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1733 | * (Descriptors) for all queues | |
1734 | * @adapter: board private structure | |
1735 | * | |
581d708e MC |
1736 | * Return 0 on success, negative on failure |
1737 | **/ | |
1738 | ||
64798845 | 1739 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1740 | { |
1741 | int i, err = 0; | |
1742 | ||
f56799ea | 1743 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1744 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1745 | if (err) { | |
feb8f478 | 1746 | e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
3fbbc72e VA |
1747 | for (i-- ; i >= 0; i--) |
1748 | e1000_free_rx_resources(adapter, | |
1749 | &adapter->rx_ring[i]); | |
581d708e MC |
1750 | break; |
1751 | } | |
1752 | } | |
1753 | ||
1754 | return err; | |
1755 | } | |
1756 | ||
1da177e4 | 1757 | /** |
2648345f | 1758 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1759 | * @adapter: Board private structure |
1760 | **/ | |
64798845 | 1761 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1762 | { |
1dc32918 | 1763 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1764 | u32 rctl; |
1da177e4 | 1765 | |
1dc32918 | 1766 | rctl = er32(RCTL); |
1da177e4 LT |
1767 | |
1768 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1769 | ||
1770 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1771 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1772 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1773 | |
1dc32918 | 1774 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1775 | rctl |= E1000_RCTL_SBP; |
1776 | else | |
1777 | rctl &= ~E1000_RCTL_SBP; | |
1778 | ||
2d7edb92 MC |
1779 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1780 | rctl &= ~E1000_RCTL_LPE; | |
1781 | else | |
1782 | rctl |= E1000_RCTL_LPE; | |
1783 | ||
1da177e4 | 1784 | /* Setup buffer sizes */ |
9e2feace AK |
1785 | rctl &= ~E1000_RCTL_SZ_4096; |
1786 | rctl |= E1000_RCTL_BSEX; | |
1787 | switch (adapter->rx_buffer_len) { | |
a1415ee6 JK |
1788 | case E1000_RXBUFFER_2048: |
1789 | default: | |
1790 | rctl |= E1000_RCTL_SZ_2048; | |
1791 | rctl &= ~E1000_RCTL_BSEX; | |
1792 | break; | |
1793 | case E1000_RXBUFFER_4096: | |
1794 | rctl |= E1000_RCTL_SZ_4096; | |
1795 | break; | |
1796 | case E1000_RXBUFFER_8192: | |
1797 | rctl |= E1000_RCTL_SZ_8192; | |
1798 | break; | |
1799 | case E1000_RXBUFFER_16384: | |
1800 | rctl |= E1000_RCTL_SZ_16384; | |
1801 | break; | |
2d7edb92 MC |
1802 | } |
1803 | ||
1dc32918 | 1804 | ew32(RCTL, rctl); |
1da177e4 LT |
1805 | } |
1806 | ||
1807 | /** | |
1808 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1809 | * @adapter: board private structure | |
1810 | * | |
1811 | * Configure the Rx unit of the MAC after a reset. | |
1812 | **/ | |
1813 | ||
64798845 | 1814 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1815 | { |
406874a7 | 1816 | u64 rdba; |
581d708e | 1817 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1818 | u32 rdlen, rctl, rxcsum; |
2d7edb92 | 1819 | |
edbbb3ca JB |
1820 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
1821 | rdlen = adapter->rx_ring[0].count * | |
1822 | sizeof(struct e1000_rx_desc); | |
1823 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
1824 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
1825 | } else { | |
1826 | rdlen = adapter->rx_ring[0].count * | |
1827 | sizeof(struct e1000_rx_desc); | |
1828 | adapter->clean_rx = e1000_clean_rx_irq; | |
1829 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1830 | } | |
1da177e4 LT |
1831 | |
1832 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1833 | rctl = er32(RCTL); |
1834 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1835 | |
1836 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1837 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1838 | |
581d708e | 1839 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1840 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1841 | if (adapter->itr_setting != 0) |
1dc32918 | 1842 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1843 | } |
1844 | ||
581d708e MC |
1845 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1846 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1847 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1848 | case 1: |
1849 | default: | |
581d708e | 1850 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
1851 | ew32(RDLEN, rdlen); |
1852 | ew32(RDBAH, (rdba >> 32)); | |
1853 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1854 | ew32(RDT, 0); | |
1855 | ew32(RDH, 0); | |
6a951698 AK |
1856 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1857 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1858 | break; |
24025e4e MC |
1859 | } |
1860 | ||
1da177e4 | 1861 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 1862 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 1863 | rxcsum = er32(RXCSUM); |
630b25cd | 1864 | if (adapter->rx_csum) |
2d7edb92 | 1865 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 1866 | else |
2d7edb92 | 1867 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 1868 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 1869 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
1870 | } |
1871 | ||
1872 | /* Enable Receives */ | |
1dc32918 | 1873 | ew32(RCTL, rctl); |
1da177e4 LT |
1874 | } |
1875 | ||
1876 | /** | |
581d708e | 1877 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1878 | * @adapter: board private structure |
581d708e | 1879 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1880 | * |
1881 | * Free all transmit software resources | |
1882 | **/ | |
1883 | ||
64798845 JP |
1884 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
1885 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1886 | { |
1887 | struct pci_dev *pdev = adapter->pdev; | |
1888 | ||
581d708e | 1889 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1890 | |
581d708e MC |
1891 | vfree(tx_ring->buffer_info); |
1892 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1893 | |
b16f53be NN |
1894 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
1895 | tx_ring->dma); | |
1da177e4 | 1896 | |
581d708e MC |
1897 | tx_ring->desc = NULL; |
1898 | } | |
1899 | ||
1900 | /** | |
1901 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1902 | * @adapter: board private structure | |
1903 | * | |
1904 | * Free all transmit software resources | |
1905 | **/ | |
1906 | ||
64798845 | 1907 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1908 | { |
1909 | int i; | |
1910 | ||
f56799ea | 1911 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1912 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1913 | } |
1914 | ||
64798845 JP |
1915 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1916 | struct e1000_buffer *buffer_info) | |
1da177e4 | 1917 | { |
602c0554 AD |
1918 | if (buffer_info->dma) { |
1919 | if (buffer_info->mapped_as_page) | |
b16f53be NN |
1920 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1921 | buffer_info->length, DMA_TO_DEVICE); | |
602c0554 | 1922 | else |
b16f53be | 1923 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
602c0554 | 1924 | buffer_info->length, |
b16f53be | 1925 | DMA_TO_DEVICE); |
602c0554 AD |
1926 | buffer_info->dma = 0; |
1927 | } | |
a9ebadd6 | 1928 | if (buffer_info->skb) { |
1da177e4 | 1929 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
1930 | buffer_info->skb = NULL; |
1931 | } | |
37e73df8 | 1932 | buffer_info->time_stamp = 0; |
a9ebadd6 | 1933 | /* buffer_info must be completely set up in the transmit path */ |
1da177e4 LT |
1934 | } |
1935 | ||
1936 | /** | |
1937 | * e1000_clean_tx_ring - Free Tx Buffers | |
1938 | * @adapter: board private structure | |
581d708e | 1939 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1940 | **/ |
1941 | ||
64798845 JP |
1942 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1943 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1944 | { |
1dc32918 | 1945 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1946 | struct e1000_buffer *buffer_info; |
1947 | unsigned long size; | |
1948 | unsigned int i; | |
1949 | ||
1950 | /* Free all the Tx ring sk_buffs */ | |
1951 | ||
96838a40 | 1952 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1953 | buffer_info = &tx_ring->buffer_info[i]; |
1954 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1955 | } | |
1956 | ||
1957 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1958 | memset(tx_ring->buffer_info, 0, size); | |
1959 | ||
1960 | /* Zero out the descriptor ring */ | |
1961 | ||
1962 | memset(tx_ring->desc, 0, tx_ring->size); | |
1963 | ||
1964 | tx_ring->next_to_use = 0; | |
1965 | tx_ring->next_to_clean = 0; | |
fd803241 | 1966 | tx_ring->last_tx_tso = 0; |
1da177e4 | 1967 | |
1dc32918 JP |
1968 | writel(0, hw->hw_addr + tx_ring->tdh); |
1969 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
1970 | } |
1971 | ||
1972 | /** | |
1973 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
1974 | * @adapter: board private structure | |
1975 | **/ | |
1976 | ||
64798845 | 1977 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
1978 | { |
1979 | int i; | |
1980 | ||
f56799ea | 1981 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1982 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1983 | } |
1984 | ||
1985 | /** | |
1986 | * e1000_free_rx_resources - Free Rx Resources | |
1987 | * @adapter: board private structure | |
581d708e | 1988 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
1989 | * |
1990 | * Free all receive software resources | |
1991 | **/ | |
1992 | ||
64798845 JP |
1993 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
1994 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1995 | { |
1da177e4 LT |
1996 | struct pci_dev *pdev = adapter->pdev; |
1997 | ||
581d708e | 1998 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
1999 | |
2000 | vfree(rx_ring->buffer_info); | |
2001 | rx_ring->buffer_info = NULL; | |
2002 | ||
b16f53be NN |
2003 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2004 | rx_ring->dma); | |
1da177e4 LT |
2005 | |
2006 | rx_ring->desc = NULL; | |
2007 | } | |
2008 | ||
2009 | /** | |
581d708e | 2010 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2011 | * @adapter: board private structure |
581d708e MC |
2012 | * |
2013 | * Free all receive software resources | |
2014 | **/ | |
2015 | ||
64798845 | 2016 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2017 | { |
2018 | int i; | |
2019 | ||
f56799ea | 2020 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2021 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2022 | } | |
2023 | ||
2024 | /** | |
2025 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2026 | * @adapter: board private structure | |
2027 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2028 | **/ |
2029 | ||
64798845 JP |
2030 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2031 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2032 | { |
1dc32918 | 2033 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2034 | struct e1000_buffer *buffer_info; |
2035 | struct pci_dev *pdev = adapter->pdev; | |
2036 | unsigned long size; | |
630b25cd | 2037 | unsigned int i; |
1da177e4 LT |
2038 | |
2039 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2040 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2041 | buffer_info = &rx_ring->buffer_info[i]; |
edbbb3ca JB |
2042 | if (buffer_info->dma && |
2043 | adapter->clean_rx == e1000_clean_rx_irq) { | |
b16f53be | 2044 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
edbbb3ca | 2045 | buffer_info->length, |
b16f53be | 2046 | DMA_FROM_DEVICE); |
edbbb3ca JB |
2047 | } else if (buffer_info->dma && |
2048 | adapter->clean_rx == e1000_clean_jumbo_rx_irq) { | |
b16f53be NN |
2049 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
2050 | buffer_info->length, | |
2051 | DMA_FROM_DEVICE); | |
679be3ba | 2052 | } |
1da177e4 | 2053 | |
679be3ba | 2054 | buffer_info->dma = 0; |
edbbb3ca JB |
2055 | if (buffer_info->page) { |
2056 | put_page(buffer_info->page); | |
2057 | buffer_info->page = NULL; | |
2058 | } | |
679be3ba | 2059 | if (buffer_info->skb) { |
1da177e4 LT |
2060 | dev_kfree_skb(buffer_info->skb); |
2061 | buffer_info->skb = NULL; | |
997f5cbd | 2062 | } |
1da177e4 LT |
2063 | } |
2064 | ||
edbbb3ca JB |
2065 | /* there also may be some cached data from a chained receive */ |
2066 | if (rx_ring->rx_skb_top) { | |
2067 | dev_kfree_skb(rx_ring->rx_skb_top); | |
2068 | rx_ring->rx_skb_top = NULL; | |
2069 | } | |
2070 | ||
1da177e4 LT |
2071 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
2072 | memset(rx_ring->buffer_info, 0, size); | |
2073 | ||
2074 | /* Zero out the descriptor ring */ | |
1da177e4 LT |
2075 | memset(rx_ring->desc, 0, rx_ring->size); |
2076 | ||
2077 | rx_ring->next_to_clean = 0; | |
2078 | rx_ring->next_to_use = 0; | |
2079 | ||
1dc32918 JP |
2080 | writel(0, hw->hw_addr + rx_ring->rdh); |
2081 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
2082 | } |
2083 | ||
2084 | /** | |
2085 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2086 | * @adapter: board private structure | |
2087 | **/ | |
2088 | ||
64798845 | 2089 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2090 | { |
2091 | int i; | |
2092 | ||
f56799ea | 2093 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2094 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2095 | } |
2096 | ||
2097 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2098 | * and memory write and invalidate disabled for certain operations | |
2099 | */ | |
64798845 | 2100 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2101 | { |
1dc32918 | 2102 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2103 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2104 | u32 rctl; |
1da177e4 | 2105 | |
1dc32918 | 2106 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2107 | |
1dc32918 | 2108 | rctl = er32(RCTL); |
1da177e4 | 2109 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2110 | ew32(RCTL, rctl); |
2111 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2112 | mdelay(5); |
2113 | ||
96838a40 | 2114 | if (netif_running(netdev)) |
581d708e | 2115 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2116 | } |
2117 | ||
64798845 | 2118 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2119 | { |
1dc32918 | 2120 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2121 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2122 | u32 rctl; |
1da177e4 | 2123 | |
1dc32918 | 2124 | rctl = er32(RCTL); |
1da177e4 | 2125 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2126 | ew32(RCTL, rctl); |
2127 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2128 | mdelay(5); |
2129 | ||
1dc32918 JP |
2130 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2131 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2132 | |
96838a40 | 2133 | if (netif_running(netdev)) { |
72d64a43 JK |
2134 | /* No need to loop, because 82542 supports only 1 queue */ |
2135 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2136 | e1000_configure_rx(adapter); |
72d64a43 | 2137 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2138 | } |
2139 | } | |
2140 | ||
2141 | /** | |
2142 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2143 | * @netdev: network interface device structure | |
2144 | * @p: pointer to an address structure | |
2145 | * | |
2146 | * Returns 0 on success, negative on failure | |
2147 | **/ | |
2148 | ||
64798845 | 2149 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2150 | { |
60490fe0 | 2151 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2152 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2153 | struct sockaddr *addr = p; |
2154 | ||
96838a40 | 2155 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2156 | return -EADDRNOTAVAIL; |
2157 | ||
2158 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2159 | ||
1dc32918 | 2160 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2161 | e1000_enter_82542_rst(adapter); |
2162 | ||
2163 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2164 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2165 | |
1dc32918 | 2166 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2167 | |
1dc32918 | 2168 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2169 | e1000_leave_82542_rst(adapter); |
2170 | ||
2171 | return 0; | |
2172 | } | |
2173 | ||
2174 | /** | |
db0ce50d | 2175 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2176 | * @netdev: network interface device structure |
2177 | * | |
db0ce50d PM |
2178 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2179 | * address lists or the network interface flags are updated. This routine is | |
2180 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2181 | * promiscuous mode, and all-multi behavior. |
2182 | **/ | |
2183 | ||
64798845 | 2184 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2185 | { |
60490fe0 | 2186 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2187 | struct e1000_hw *hw = &adapter->hw; |
ccffad25 JP |
2188 | struct netdev_hw_addr *ha; |
2189 | bool use_uc = false; | |
406874a7 JP |
2190 | u32 rctl; |
2191 | u32 hash_value; | |
868d5309 | 2192 | int i, rar_entries = E1000_RAR_ENTRIES; |
1532ecea | 2193 | int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
81c52285 JB |
2194 | u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
2195 | ||
2196 | if (!mcarray) { | |
feb8f478 | 2197 | e_err(probe, "memory allocation failed\n"); |
81c52285 JB |
2198 | return; |
2199 | } | |
cd94dd0b | 2200 | |
2648345f MC |
2201 | /* Check for Promiscuous and All Multicast modes */ |
2202 | ||
1dc32918 | 2203 | rctl = er32(RCTL); |
1da177e4 | 2204 | |
96838a40 | 2205 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2206 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2207 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2208 | } else { |
1532ecea | 2209 | if (netdev->flags & IFF_ALLMULTI) |
746b9f02 | 2210 | rctl |= E1000_RCTL_MPE; |
1532ecea | 2211 | else |
746b9f02 | 2212 | rctl &= ~E1000_RCTL_MPE; |
1532ecea JB |
2213 | /* Enable VLAN filter if there is a VLAN */ |
2214 | if (adapter->vlgrp) | |
2215 | rctl |= E1000_RCTL_VFE; | |
db0ce50d PM |
2216 | } |
2217 | ||
32e7bfc4 | 2218 | if (netdev_uc_count(netdev) > rar_entries - 1) { |
db0ce50d PM |
2219 | rctl |= E1000_RCTL_UPE; |
2220 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2221 | rctl &= ~E1000_RCTL_UPE; | |
ccffad25 | 2222 | use_uc = true; |
1da177e4 LT |
2223 | } |
2224 | ||
1dc32918 | 2225 | ew32(RCTL, rctl); |
1da177e4 LT |
2226 | |
2227 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2228 | ||
96838a40 | 2229 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2230 | e1000_enter_82542_rst(adapter); |
2231 | ||
db0ce50d PM |
2232 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2233 | * addresses take precedence to avoid disabling unicast filtering | |
2234 | * when possible. | |
2235 | * | |
b595076a | 2236 | * RAR 0 is used for the station MAC address |
1da177e4 LT |
2237 | * if there are not 14 addresses, go ahead and clear the filters |
2238 | */ | |
ccffad25 JP |
2239 | i = 1; |
2240 | if (use_uc) | |
32e7bfc4 | 2241 | netdev_for_each_uc_addr(ha, netdev) { |
ccffad25 JP |
2242 | if (i == rar_entries) |
2243 | break; | |
2244 | e1000_rar_set(hw, ha->addr, i++); | |
2245 | } | |
2246 | ||
22bedad3 | 2247 | netdev_for_each_mc_addr(ha, netdev) { |
7a81e9f3 JP |
2248 | if (i == rar_entries) { |
2249 | /* load any remaining addresses into the hash table */ | |
2250 | u32 hash_reg, hash_bit, mta; | |
22bedad3 | 2251 | hash_value = e1000_hash_mc_addr(hw, ha->addr); |
7a81e9f3 JP |
2252 | hash_reg = (hash_value >> 5) & 0x7F; |
2253 | hash_bit = hash_value & 0x1F; | |
2254 | mta = (1 << hash_bit); | |
2255 | mcarray[hash_reg] |= mta; | |
10886af5 | 2256 | } else { |
22bedad3 | 2257 | e1000_rar_set(hw, ha->addr, i++); |
1da177e4 LT |
2258 | } |
2259 | } | |
2260 | ||
7a81e9f3 JP |
2261 | for (; i < rar_entries; i++) { |
2262 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2263 | E1000_WRITE_FLUSH(); | |
2264 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2265 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2266 | } |
2267 | ||
81c52285 JB |
2268 | /* write the hash table completely, write from bottom to avoid |
2269 | * both stupid write combining chipsets, and flushing each write */ | |
2270 | for (i = mta_reg_count - 1; i >= 0 ; i--) { | |
2271 | /* | |
2272 | * If we are on an 82544 has an errata where writing odd | |
2273 | * offsets overwrites the previous even offset, but writing | |
2274 | * backwards over the range solves the issue by always | |
2275 | * writing the odd offset first | |
2276 | */ | |
2277 | E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); | |
2278 | } | |
2279 | E1000_WRITE_FLUSH(); | |
2280 | ||
96838a40 | 2281 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2282 | e1000_leave_82542_rst(adapter); |
81c52285 JB |
2283 | |
2284 | kfree(mcarray); | |
1da177e4 LT |
2285 | } |
2286 | ||
2287 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2288 | * the phy */ | |
2289 | ||
64798845 | 2290 | static void e1000_update_phy_info(unsigned long data) |
1da177e4 | 2291 | { |
e982f17c | 2292 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
5cf42fcd JB |
2293 | schedule_work(&adapter->phy_info_task); |
2294 | } | |
2295 | ||
2296 | static void e1000_update_phy_info_task(struct work_struct *work) | |
2297 | { | |
2298 | struct e1000_adapter *adapter = container_of(work, | |
2299 | struct e1000_adapter, | |
2300 | phy_info_task); | |
1dc32918 | 2301 | struct e1000_hw *hw = &adapter->hw; |
338c15e4 JB |
2302 | |
2303 | rtnl_lock(); | |
1dc32918 | 2304 | e1000_phy_get_info(hw, &adapter->phy_info); |
338c15e4 | 2305 | rtnl_unlock(); |
1da177e4 LT |
2306 | } |
2307 | ||
2308 | /** | |
2309 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2310 | * @data: pointer to adapter cast into an unsigned long | |
2311 | **/ | |
64798845 | 2312 | static void e1000_82547_tx_fifo_stall(unsigned long data) |
1da177e4 | 2313 | { |
e982f17c | 2314 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
5cf42fcd JB |
2315 | schedule_work(&adapter->fifo_stall_task); |
2316 | } | |
2317 | ||
2318 | /** | |
2319 | * e1000_82547_tx_fifo_stall_task - task to complete work | |
2320 | * @work: work struct contained inside adapter struct | |
2321 | **/ | |
2322 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) | |
2323 | { | |
2324 | struct e1000_adapter *adapter = container_of(work, | |
2325 | struct e1000_adapter, | |
2326 | fifo_stall_task); | |
1dc32918 | 2327 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2328 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2329 | u32 tctl; |
1da177e4 | 2330 | |
338c15e4 | 2331 | rtnl_lock(); |
96838a40 | 2332 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2333 | if ((er32(TDT) == er32(TDH)) && |
2334 | (er32(TDFT) == er32(TDFH)) && | |
2335 | (er32(TDFTS) == er32(TDFHS))) { | |
2336 | tctl = er32(TCTL); | |
2337 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2338 | ew32(TDFT, adapter->tx_head_addr); | |
2339 | ew32(TDFH, adapter->tx_head_addr); | |
2340 | ew32(TDFTS, adapter->tx_head_addr); | |
2341 | ew32(TDFHS, adapter->tx_head_addr); | |
2342 | ew32(TCTL, tctl); | |
2343 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2344 | |
2345 | adapter->tx_fifo_head = 0; | |
2346 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2347 | netif_wake_queue(netdev); | |
baa34745 | 2348 | } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
1da177e4 LT |
2349 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
2350 | } | |
2351 | } | |
338c15e4 | 2352 | rtnl_unlock(); |
1da177e4 LT |
2353 | } |
2354 | ||
b548192a | 2355 | bool e1000_has_link(struct e1000_adapter *adapter) |
be0f0719 JB |
2356 | { |
2357 | struct e1000_hw *hw = &adapter->hw; | |
2358 | bool link_active = false; | |
be0f0719 JB |
2359 | |
2360 | /* get_link_status is set on LSC (link status) interrupt or | |
2361 | * rx sequence error interrupt. get_link_status will stay | |
2362 | * false until the e1000_check_for_link establishes link | |
2363 | * for copper adapters ONLY | |
2364 | */ | |
2365 | switch (hw->media_type) { | |
2366 | case e1000_media_type_copper: | |
2367 | if (hw->get_link_status) { | |
120a5d0d | 2368 | e1000_check_for_link(hw); |
be0f0719 JB |
2369 | link_active = !hw->get_link_status; |
2370 | } else { | |
2371 | link_active = true; | |
2372 | } | |
2373 | break; | |
2374 | case e1000_media_type_fiber: | |
120a5d0d | 2375 | e1000_check_for_link(hw); |
be0f0719 JB |
2376 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
2377 | break; | |
2378 | case e1000_media_type_internal_serdes: | |
120a5d0d | 2379 | e1000_check_for_link(hw); |
be0f0719 JB |
2380 | link_active = hw->serdes_has_link; |
2381 | break; | |
2382 | default: | |
2383 | break; | |
2384 | } | |
2385 | ||
2386 | return link_active; | |
2387 | } | |
2388 | ||
1da177e4 LT |
2389 | /** |
2390 | * e1000_watchdog - Timer Call-back | |
2391 | * @data: pointer to adapter cast into an unsigned long | |
2392 | **/ | |
64798845 | 2393 | static void e1000_watchdog(unsigned long data) |
1da177e4 | 2394 | { |
e982f17c | 2395 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2396 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2397 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2398 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 | 2399 | u32 link, tctl; |
90fb5135 | 2400 | |
be0f0719 JB |
2401 | link = e1000_has_link(adapter); |
2402 | if ((netif_carrier_ok(netdev)) && link) | |
2403 | goto link_up; | |
1da177e4 | 2404 | |
96838a40 JB |
2405 | if (link) { |
2406 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2407 | u32 ctrl; |
c3033b01 | 2408 | bool txb2b = true; |
be0f0719 | 2409 | /* update snapshot of PHY registers on LSC */ |
1dc32918 | 2410 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2411 | &adapter->link_speed, |
2412 | &adapter->link_duplex); | |
2413 | ||
1dc32918 | 2414 | ctrl = er32(CTRL); |
675ad473 ET |
2415 | pr_info("%s NIC Link is Up %d Mbps %s, " |
2416 | "Flow Control: %s\n", | |
2417 | netdev->name, | |
2418 | adapter->link_speed, | |
2419 | adapter->link_duplex == FULL_DUPLEX ? | |
2420 | "Full Duplex" : "Half Duplex", | |
2421 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2422 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2423 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2424 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
1da177e4 | 2425 | |
39ca5f03 | 2426 | /* adjust timeout factor according to speed/duplex */ |
66a2b0a3 | 2427 | adapter->tx_timeout_factor = 1; |
7e6c9861 JK |
2428 | switch (adapter->link_speed) { |
2429 | case SPEED_10: | |
c3033b01 | 2430 | txb2b = false; |
be0f0719 | 2431 | adapter->tx_timeout_factor = 16; |
7e6c9861 JK |
2432 | break; |
2433 | case SPEED_100: | |
c3033b01 | 2434 | txb2b = false; |
7e6c9861 JK |
2435 | /* maybe add some timeout factor ? */ |
2436 | break; | |
2437 | } | |
2438 | ||
1532ecea | 2439 | /* enable transmits in the hardware */ |
1dc32918 | 2440 | tctl = er32(TCTL); |
7e6c9861 | 2441 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2442 | ew32(TCTL, tctl); |
66a2b0a3 | 2443 | |
1da177e4 | 2444 | netif_carrier_on(netdev); |
baa34745 JB |
2445 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2446 | mod_timer(&adapter->phy_info_timer, | |
2447 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2448 | adapter->smartspeed = 0; |
2449 | } | |
2450 | } else { | |
96838a40 | 2451 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2452 | adapter->link_speed = 0; |
2453 | adapter->link_duplex = 0; | |
675ad473 ET |
2454 | pr_info("%s NIC Link is Down\n", |
2455 | netdev->name); | |
1da177e4 | 2456 | netif_carrier_off(netdev); |
baa34745 JB |
2457 | |
2458 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
2459 | mod_timer(&adapter->phy_info_timer, | |
2460 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2461 | } |
2462 | ||
2463 | e1000_smartspeed(adapter); | |
2464 | } | |
2465 | ||
be0f0719 | 2466 | link_up: |
1da177e4 LT |
2467 | e1000_update_stats(adapter); |
2468 | ||
1dc32918 | 2469 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2470 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2471 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2472 | adapter->colc_old = adapter->stats.colc; |
2473 | ||
2474 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2475 | adapter->gorcl_old = adapter->stats.gorcl; | |
2476 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2477 | adapter->gotcl_old = adapter->stats.gotcl; | |
2478 | ||
1dc32918 | 2479 | e1000_update_adaptive(hw); |
1da177e4 | 2480 | |
f56799ea | 2481 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2482 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2483 | /* We've lost link, so the controller stops DMA, |
2484 | * but we've got queued Tx work that's never going | |
2485 | * to get done, so reset controller to flush Tx. | |
2486 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2487 | adapter->tx_timeout_count++; |
2488 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
2489 | /* return immediately since reset is imminent */ |
2490 | return; | |
1da177e4 LT |
2491 | } |
2492 | } | |
2493 | ||
eab2abf5 JB |
2494 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
2495 | if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { | |
2496 | /* | |
2497 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
2498 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
2499 | * everyone else is between 2000-8000. | |
2500 | */ | |
2501 | u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
2502 | u32 dif = (adapter->gotcl > adapter->gorcl ? | |
2503 | adapter->gotcl - adapter->gorcl : | |
2504 | adapter->gorcl - adapter->gotcl) / 10000; | |
2505 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2506 | ||
2507 | ew32(ITR, 1000000000 / (itr * 256)); | |
2508 | } | |
2509 | ||
1da177e4 | 2510 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2511 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2512 | |
2648345f | 2513 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2514 | adapter->detect_tx_hung = true; |
1da177e4 LT |
2515 | |
2516 | /* Reset the timer */ | |
baa34745 JB |
2517 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2518 | mod_timer(&adapter->watchdog_timer, | |
2519 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2520 | } |
2521 | ||
835bb129 JB |
2522 | enum latency_range { |
2523 | lowest_latency = 0, | |
2524 | low_latency = 1, | |
2525 | bulk_latency = 2, | |
2526 | latency_invalid = 255 | |
2527 | }; | |
2528 | ||
2529 | /** | |
2530 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
8fce4731 JB |
2531 | * @adapter: pointer to adapter |
2532 | * @itr_setting: current adapter->itr | |
2533 | * @packets: the number of packets during this measurement interval | |
2534 | * @bytes: the number of bytes during this measurement interval | |
2535 | * | |
835bb129 JB |
2536 | * Stores a new ITR value based on packets and byte |
2537 | * counts during the last interrupt. The advantage of per interrupt | |
2538 | * computation is faster updates and more accurate ITR for the current | |
2539 | * traffic pattern. Constants in this function were computed | |
2540 | * based on theoretical maximum wire speed and thresholds were set based | |
2541 | * on testing data as well as attempting to minimize response time | |
2542 | * while increasing bulk throughput. | |
2543 | * this functionality is controlled by the InterruptThrottleRate module | |
2544 | * parameter (see e1000_param.c) | |
835bb129 JB |
2545 | **/ |
2546 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2547 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2548 | { |
2549 | unsigned int retval = itr_setting; | |
2550 | struct e1000_hw *hw = &adapter->hw; | |
2551 | ||
2552 | if (unlikely(hw->mac_type < e1000_82540)) | |
2553 | goto update_itr_done; | |
2554 | ||
2555 | if (packets == 0) | |
2556 | goto update_itr_done; | |
2557 | ||
835bb129 JB |
2558 | switch (itr_setting) { |
2559 | case lowest_latency: | |
2b65326e JB |
2560 | /* jumbo frames get bulk treatment*/ |
2561 | if (bytes/packets > 8000) | |
2562 | retval = bulk_latency; | |
2563 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2564 | retval = low_latency; |
2565 | break; | |
2566 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2567 | if (bytes > 10000) { | |
2b65326e JB |
2568 | /* jumbo frames need bulk latency setting */ |
2569 | if (bytes/packets > 8000) | |
2570 | retval = bulk_latency; | |
2571 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2572 | retval = bulk_latency; |
2573 | else if ((packets > 35)) | |
2574 | retval = lowest_latency; | |
2b65326e JB |
2575 | } else if (bytes/packets > 2000) |
2576 | retval = bulk_latency; | |
2577 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2578 | retval = lowest_latency; |
2579 | break; | |
2580 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2581 | if (bytes > 25000) { | |
2582 | if (packets > 35) | |
2583 | retval = low_latency; | |
2b65326e JB |
2584 | } else if (bytes < 6000) { |
2585 | retval = low_latency; | |
835bb129 JB |
2586 | } |
2587 | break; | |
2588 | } | |
2589 | ||
2590 | update_itr_done: | |
2591 | return retval; | |
2592 | } | |
2593 | ||
2594 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2595 | { | |
2596 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2597 | u16 current_itr; |
2598 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2599 | |
2600 | if (unlikely(hw->mac_type < e1000_82540)) | |
2601 | return; | |
2602 | ||
2603 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2604 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2605 | current_itr = 0; | |
2606 | new_itr = 4000; | |
2607 | goto set_itr_now; | |
2608 | } | |
2609 | ||
2610 | adapter->tx_itr = e1000_update_itr(adapter, | |
2611 | adapter->tx_itr, | |
2612 | adapter->total_tx_packets, | |
2613 | adapter->total_tx_bytes); | |
2b65326e JB |
2614 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2615 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2616 | adapter->tx_itr = low_latency; | |
2617 | ||
835bb129 JB |
2618 | adapter->rx_itr = e1000_update_itr(adapter, |
2619 | adapter->rx_itr, | |
2620 | adapter->total_rx_packets, | |
2621 | adapter->total_rx_bytes); | |
2b65326e JB |
2622 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2623 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2624 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2625 | |
2626 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2627 | ||
835bb129 JB |
2628 | switch (current_itr) { |
2629 | /* counts and packets in update_itr are dependent on these numbers */ | |
2630 | case lowest_latency: | |
2631 | new_itr = 70000; | |
2632 | break; | |
2633 | case low_latency: | |
2634 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2635 | break; | |
2636 | case bulk_latency: | |
2637 | new_itr = 4000; | |
2638 | break; | |
2639 | default: | |
2640 | break; | |
2641 | } | |
2642 | ||
2643 | set_itr_now: | |
2644 | if (new_itr != adapter->itr) { | |
2645 | /* this attempts to bias the interrupt rate towards Bulk | |
2646 | * by adding intermediate steps when interrupt rate is | |
2647 | * increasing */ | |
2648 | new_itr = new_itr > adapter->itr ? | |
2649 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2650 | new_itr; | |
2651 | adapter->itr = new_itr; | |
1dc32918 | 2652 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 | 2653 | } |
835bb129 JB |
2654 | } |
2655 | ||
1da177e4 LT |
2656 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2657 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2658 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2659 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2660 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2661 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2662 | ||
64798845 JP |
2663 | static int e1000_tso(struct e1000_adapter *adapter, |
2664 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2665 | { |
1da177e4 | 2666 | struct e1000_context_desc *context_desc; |
545c67c0 | 2667 | struct e1000_buffer *buffer_info; |
1da177e4 | 2668 | unsigned int i; |
406874a7 JP |
2669 | u32 cmd_length = 0; |
2670 | u16 ipcse = 0, tucse, mss; | |
2671 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2672 | int err; |
2673 | ||
89114afd | 2674 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2675 | if (skb_header_cloned(skb)) { |
2676 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2677 | if (err) | |
2678 | return err; | |
2679 | } | |
2680 | ||
ab6a5bb6 | 2681 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2682 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2683 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2684 | struct iphdr *iph = ip_hdr(skb); |
2685 | iph->tot_len = 0; | |
2686 | iph->check = 0; | |
aa8223c7 ACM |
2687 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2688 | iph->daddr, 0, | |
2689 | IPPROTO_TCP, | |
2690 | 0); | |
2d7edb92 | 2691 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2692 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2693 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2694 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2695 | tcp_hdr(skb)->check = |
0660e03f ACM |
2696 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2697 | &ipv6_hdr(skb)->daddr, | |
2698 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2699 | ipcse = 0; |
2d7edb92 | 2700 | } |
bbe735e4 | 2701 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2702 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2703 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2704 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2705 | tucse = 0; |
2706 | ||
2707 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2708 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2709 | |
581d708e MC |
2710 | i = tx_ring->next_to_use; |
2711 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2712 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2713 | |
2714 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2715 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2716 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2717 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2718 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2719 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2720 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2721 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2722 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2723 | ||
545c67c0 | 2724 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2725 | buffer_info->next_to_watch = i; |
545c67c0 | 2726 | |
581d708e MC |
2727 | if (++i == tx_ring->count) i = 0; |
2728 | tx_ring->next_to_use = i; | |
1da177e4 | 2729 | |
c3033b01 | 2730 | return true; |
1da177e4 | 2731 | } |
c3033b01 | 2732 | return false; |
1da177e4 LT |
2733 | } |
2734 | ||
64798845 JP |
2735 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2736 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2737 | { |
2738 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2739 | struct e1000_buffer *buffer_info; |
1da177e4 | 2740 | unsigned int i; |
406874a7 | 2741 | u8 css; |
3ed30676 | 2742 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2743 | |
3ed30676 DG |
2744 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2745 | return false; | |
1da177e4 | 2746 | |
3ed30676 | 2747 | switch (skb->protocol) { |
09640e63 | 2748 | case cpu_to_be16(ETH_P_IP): |
3ed30676 DG |
2749 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2750 | cmd_len |= E1000_TXD_CMD_TCP; | |
2751 | break; | |
09640e63 | 2752 | case cpu_to_be16(ETH_P_IPV6): |
3ed30676 DG |
2753 | /* XXX not handling all IPV6 headers */ |
2754 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2755 | cmd_len |= E1000_TXD_CMD_TCP; | |
2756 | break; | |
2757 | default: | |
2758 | if (unlikely(net_ratelimit())) | |
feb8f478 ET |
2759 | e_warn(drv, "checksum_partial proto=%x!\n", |
2760 | skb->protocol); | |
3ed30676 DG |
2761 | break; |
2762 | } | |
1da177e4 | 2763 | |
0d0b1672 | 2764 | css = skb_checksum_start_offset(skb); |
1da177e4 | 2765 | |
3ed30676 DG |
2766 | i = tx_ring->next_to_use; |
2767 | buffer_info = &tx_ring->buffer_info[i]; | |
2768 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2769 | |
3ed30676 DG |
2770 | context_desc->lower_setup.ip_config = 0; |
2771 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2772 | context_desc->upper_setup.tcp_fields.tucso = | |
2773 | css + skb->csum_offset; | |
2774 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2775 | context_desc->tcp_seg_setup.data = 0; | |
2776 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2777 | |
3ed30676 DG |
2778 | buffer_info->time_stamp = jiffies; |
2779 | buffer_info->next_to_watch = i; | |
1da177e4 | 2780 | |
3ed30676 DG |
2781 | if (unlikely(++i == tx_ring->count)) i = 0; |
2782 | tx_ring->next_to_use = i; | |
2783 | ||
2784 | return true; | |
1da177e4 LT |
2785 | } |
2786 | ||
2787 | #define E1000_MAX_TXD_PWR 12 | |
2788 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2789 | ||
64798845 JP |
2790 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2791 | struct e1000_tx_ring *tx_ring, | |
2792 | struct sk_buff *skb, unsigned int first, | |
2793 | unsigned int max_per_txd, unsigned int nr_frags, | |
2794 | unsigned int mss) | |
1da177e4 | 2795 | { |
1dc32918 | 2796 | struct e1000_hw *hw = &adapter->hw; |
602c0554 | 2797 | struct pci_dev *pdev = adapter->pdev; |
37e73df8 | 2798 | struct e1000_buffer *buffer_info; |
d20b606c | 2799 | unsigned int len = skb_headlen(skb); |
602c0554 | 2800 | unsigned int offset = 0, size, count = 0, i; |
1da177e4 | 2801 | unsigned int f; |
1da177e4 LT |
2802 | |
2803 | i = tx_ring->next_to_use; | |
2804 | ||
96838a40 | 2805 | while (len) { |
37e73df8 | 2806 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 | 2807 | size = min(len, max_per_txd); |
fd803241 JK |
2808 | /* Workaround for Controller erratum -- |
2809 | * descriptor for non-tso packet in a linear SKB that follows a | |
2810 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2811 | * DMA'd to the controller */ |
fd803241 | 2812 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2813 | !skb_is_gso(skb)) { |
fd803241 JK |
2814 | tx_ring->last_tx_tso = 0; |
2815 | size -= 4; | |
2816 | } | |
2817 | ||
1da177e4 LT |
2818 | /* Workaround for premature desc write-backs |
2819 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2820 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2821 | size -= 4; |
97338bde MC |
2822 | /* work-around for errata 10 and it applies |
2823 | * to all controllers in PCI-X mode | |
2824 | * The fix is to make sure that the first descriptor of a | |
2825 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2826 | */ | |
1dc32918 | 2827 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2828 | (size > 2015) && count == 0)) |
2829 | size = 2015; | |
96838a40 | 2830 | |
1da177e4 LT |
2831 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2832 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2833 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2834 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2835 | size > 4)) | |
2836 | size -= 4; | |
2837 | ||
2838 | buffer_info->length = size; | |
cdd7549e | 2839 | /* set time_stamp *before* dma to help avoid a possible race */ |
1da177e4 | 2840 | buffer_info->time_stamp = jiffies; |
602c0554 | 2841 | buffer_info->mapped_as_page = false; |
b16f53be NN |
2842 | buffer_info->dma = dma_map_single(&pdev->dev, |
2843 | skb->data + offset, | |
2844 | size, DMA_TO_DEVICE); | |
2845 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
602c0554 | 2846 | goto dma_error; |
a9ebadd6 | 2847 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2848 | |
2849 | len -= size; | |
2850 | offset += size; | |
2851 | count++; | |
37e73df8 AD |
2852 | if (len) { |
2853 | i++; | |
2854 | if (unlikely(i == tx_ring->count)) | |
2855 | i = 0; | |
2856 | } | |
1da177e4 LT |
2857 | } |
2858 | ||
96838a40 | 2859 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2860 | struct skb_frag_struct *frag; |
2861 | ||
2862 | frag = &skb_shinfo(skb)->frags[f]; | |
2863 | len = frag->size; | |
602c0554 | 2864 | offset = frag->page_offset; |
1da177e4 | 2865 | |
96838a40 | 2866 | while (len) { |
37e73df8 AD |
2867 | i++; |
2868 | if (unlikely(i == tx_ring->count)) | |
2869 | i = 0; | |
2870 | ||
1da177e4 LT |
2871 | buffer_info = &tx_ring->buffer_info[i]; |
2872 | size = min(len, max_per_txd); | |
1da177e4 LT |
2873 | /* Workaround for premature desc write-backs |
2874 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2875 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 2876 | size -= 4; |
1da177e4 LT |
2877 | /* Workaround for potential 82544 hang in PCI-X. |
2878 | * Avoid terminating buffers within evenly-aligned | |
2879 | * dwords. */ | |
96838a40 | 2880 | if (unlikely(adapter->pcix_82544 && |
8fce4731 JB |
2881 | !((unsigned long)(page_to_phys(frag->page) + offset |
2882 | + size - 1) & 4) && | |
2883 | size > 4)) | |
1da177e4 LT |
2884 | size -= 4; |
2885 | ||
2886 | buffer_info->length = size; | |
1da177e4 | 2887 | buffer_info->time_stamp = jiffies; |
602c0554 | 2888 | buffer_info->mapped_as_page = true; |
b16f53be | 2889 | buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
602c0554 | 2890 | offset, size, |
b16f53be NN |
2891 | DMA_TO_DEVICE); |
2892 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
602c0554 | 2893 | goto dma_error; |
a9ebadd6 | 2894 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2895 | |
2896 | len -= size; | |
2897 | offset += size; | |
2898 | count++; | |
1da177e4 LT |
2899 | } |
2900 | } | |
2901 | ||
1da177e4 LT |
2902 | tx_ring->buffer_info[i].skb = skb; |
2903 | tx_ring->buffer_info[first].next_to_watch = i; | |
2904 | ||
2905 | return count; | |
602c0554 AD |
2906 | |
2907 | dma_error: | |
2908 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2909 | buffer_info->dma = 0; | |
c1fa347f | 2910 | if (count) |
602c0554 | 2911 | count--; |
c1fa347f RK |
2912 | |
2913 | while (count--) { | |
2914 | if (i==0) | |
602c0554 | 2915 | i += tx_ring->count; |
c1fa347f | 2916 | i--; |
602c0554 AD |
2917 | buffer_info = &tx_ring->buffer_info[i]; |
2918 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2919 | } | |
2920 | ||
2921 | return 0; | |
1da177e4 LT |
2922 | } |
2923 | ||
64798845 JP |
2924 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
2925 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
2926 | int count) | |
1da177e4 | 2927 | { |
1dc32918 | 2928 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2929 | struct e1000_tx_desc *tx_desc = NULL; |
2930 | struct e1000_buffer *buffer_info; | |
406874a7 | 2931 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
2932 | unsigned int i; |
2933 | ||
96838a40 | 2934 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2935 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2936 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2937 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2938 | ||
96838a40 | 2939 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2940 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2941 | } |
2942 | ||
96838a40 | 2943 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2944 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2945 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2946 | } | |
2947 | ||
96838a40 | 2948 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2949 | txd_lower |= E1000_TXD_CMD_VLE; |
2950 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2951 | } | |
2952 | ||
2953 | i = tx_ring->next_to_use; | |
2954 | ||
96838a40 | 2955 | while (count--) { |
1da177e4 LT |
2956 | buffer_info = &tx_ring->buffer_info[i]; |
2957 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2958 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2959 | tx_desc->lower.data = | |
2960 | cpu_to_le32(txd_lower | buffer_info->length); | |
2961 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2962 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2963 | } |
2964 | ||
2965 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2966 | ||
2967 | /* Force memory writes to complete before letting h/w | |
2968 | * know there are new descriptors to fetch. (Only | |
2969 | * applicable for weak-ordered memory model archs, | |
2970 | * such as IA-64). */ | |
2971 | wmb(); | |
2972 | ||
2973 | tx_ring->next_to_use = i; | |
1dc32918 | 2974 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
2975 | /* we need this if more than one processor can write to our tail |
2976 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2977 | mmiowb(); | |
1da177e4 LT |
2978 | } |
2979 | ||
2980 | /** | |
2981 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2982 | * The workaround is to avoid queuing a large packet that would span | |
2983 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2984 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2985 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2986 | * to the beginning of the Tx FIFO. | |
2987 | **/ | |
2988 | ||
2989 | #define E1000_FIFO_HDR 0x10 | |
2990 | #define E1000_82547_PAD_LEN 0x3E0 | |
2991 | ||
64798845 JP |
2992 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
2993 | struct sk_buff *skb) | |
1da177e4 | 2994 | { |
406874a7 JP |
2995 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
2996 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 2997 | |
9099cfb9 | 2998 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 2999 | |
96838a40 | 3000 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3001 | goto no_fifo_stall_required; |
3002 | ||
96838a40 | 3003 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3004 | return 1; |
3005 | ||
96838a40 | 3006 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3007 | atomic_set(&adapter->tx_fifo_stall, 1); |
3008 | return 1; | |
3009 | } | |
3010 | ||
3011 | no_fifo_stall_required: | |
3012 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3013 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3014 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3015 | return 0; | |
3016 | } | |
3017 | ||
65c7973f JB |
3018 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3019 | { | |
3020 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3021 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3022 | ||
3023 | netif_stop_queue(netdev); | |
3024 | /* Herbert's original patch had: | |
3025 | * smp_mb__after_netif_stop_queue(); | |
3026 | * but since that doesn't exist yet, just open code it. */ | |
3027 | smp_mb(); | |
3028 | ||
3029 | /* We need to check again in a case another CPU has just | |
3030 | * made room available. */ | |
3031 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3032 | return -EBUSY; | |
3033 | ||
3034 | /* A reprieve! */ | |
3035 | netif_start_queue(netdev); | |
fcfb1224 | 3036 | ++adapter->restart_queue; |
65c7973f JB |
3037 | return 0; |
3038 | } | |
3039 | ||
3040 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3041 | struct e1000_tx_ring *tx_ring, int size) | |
3042 | { | |
3043 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3044 | return 0; | |
3045 | return __e1000_maybe_stop_tx(netdev, size); | |
3046 | } | |
3047 | ||
1da177e4 | 3048 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3b29a56d SH |
3049 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
3050 | struct net_device *netdev) | |
1da177e4 | 3051 | { |
60490fe0 | 3052 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3053 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 3054 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3055 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3056 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3057 | unsigned int tx_flags = 0; | |
e743d313 | 3058 | unsigned int len = skb_headlen(skb); |
6d1e3aa7 KK |
3059 | unsigned int nr_frags; |
3060 | unsigned int mss; | |
1da177e4 | 3061 | int count = 0; |
76c224bc | 3062 | int tso; |
1da177e4 | 3063 | unsigned int f; |
1da177e4 | 3064 | |
65c7973f JB |
3065 | /* This goes back to the question of how to logically map a tx queue |
3066 | * to a flow. Right now, performance is impacted slightly negatively | |
3067 | * if using multiple tx queues. If the stack breaks away from a | |
3068 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3069 | tx_ring = adapter->tx_ring; |
24025e4e | 3070 | |
581d708e | 3071 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3072 | dev_kfree_skb_any(skb); |
3073 | return NETDEV_TX_OK; | |
3074 | } | |
3075 | ||
7967168c | 3076 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3077 | /* The controller does a simple calculation to |
1da177e4 LT |
3078 | * make sure there is enough room in the FIFO before |
3079 | * initiating the DMA for each buffer. The calc is: | |
3080 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3081 | * overrun the FIFO, adjust the max buffer len if mss | |
3082 | * drops. */ | |
96838a40 | 3083 | if (mss) { |
406874a7 | 3084 | u8 hdr_len; |
1da177e4 LT |
3085 | max_per_txd = min(mss << 2, max_per_txd); |
3086 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3087 | |
ab6a5bb6 | 3088 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3089 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 3090 | switch (hw->mac_type) { |
9f687888 | 3091 | unsigned int pull_size; |
683a2aa3 HX |
3092 | case e1000_82544: |
3093 | /* Make sure we have room to chop off 4 bytes, | |
3094 | * and that the end alignment will work out to | |
3095 | * this hardware's requirements | |
3096 | * NOTE: this is a TSO only workaround | |
3097 | * if end byte alignment not correct move us | |
3098 | * into the next dword */ | |
27a884dc | 3099 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3100 | break; |
3101 | /* fall through */ | |
9f687888 JK |
3102 | pull_size = min((unsigned int)4, skb->data_len); |
3103 | if (!__pskb_pull_tail(skb, pull_size)) { | |
feb8f478 ET |
3104 | e_err(drv, "__pskb_pull_tail " |
3105 | "failed.\n"); | |
9f687888 | 3106 | dev_kfree_skb_any(skb); |
749dfc70 | 3107 | return NETDEV_TX_OK; |
9f687888 | 3108 | } |
e743d313 | 3109 | len = skb_headlen(skb); |
9f687888 JK |
3110 | break; |
3111 | default: | |
3112 | /* do nothing */ | |
3113 | break; | |
d74bbd3b | 3114 | } |
9a3056da | 3115 | } |
1da177e4 LT |
3116 | } |
3117 | ||
9a3056da | 3118 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3119 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3120 | count++; |
2648345f | 3121 | count++; |
fd803241 | 3122 | |
fd803241 | 3123 | /* Controller Erratum workaround */ |
89114afd | 3124 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3125 | count++; |
fd803241 | 3126 | |
1da177e4 LT |
3127 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3128 | ||
96838a40 | 3129 | if (adapter->pcix_82544) |
1da177e4 LT |
3130 | count++; |
3131 | ||
96838a40 | 3132 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3133 | * in PCI-X mode, so add one more descriptor to the count |
3134 | */ | |
1dc32918 | 3135 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3136 | (len > 2015))) |
3137 | count++; | |
3138 | ||
1da177e4 | 3139 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3140 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3141 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3142 | max_txd_pwr); | |
96838a40 | 3143 | if (adapter->pcix_82544) |
1da177e4 LT |
3144 | count += nr_frags; |
3145 | ||
1da177e4 LT |
3146 | /* need: count + 2 desc gap to keep tail from touching |
3147 | * head, otherwise try next time */ | |
8017943e | 3148 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
1da177e4 | 3149 | return NETDEV_TX_BUSY; |
1da177e4 | 3150 | |
1dc32918 | 3151 | if (unlikely(hw->mac_type == e1000_82547)) { |
96838a40 | 3152 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
1da177e4 | 3153 | netif_stop_queue(netdev); |
baa34745 JB |
3154 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3155 | mod_timer(&adapter->tx_fifo_stall_timer, | |
3156 | jiffies + 1); | |
1da177e4 LT |
3157 | return NETDEV_TX_BUSY; |
3158 | } | |
3159 | } | |
3160 | ||
eab6d18d | 3161 | if (unlikely(vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3162 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3163 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3164 | } | |
3165 | ||
581d708e | 3166 | first = tx_ring->next_to_use; |
96838a40 | 3167 | |
581d708e | 3168 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3169 | if (tso < 0) { |
3170 | dev_kfree_skb_any(skb); | |
3171 | return NETDEV_TX_OK; | |
3172 | } | |
3173 | ||
fd803241 | 3174 | if (likely(tso)) { |
8fce4731 JB |
3175 | if (likely(hw->mac_type != e1000_82544)) |
3176 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3177 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3178 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3179 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3180 | ||
60828236 | 3181 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3182 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3183 | ||
37e73df8 AD |
3184 | count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
3185 | nr_frags, mss); | |
1da177e4 | 3186 | |
37e73df8 AD |
3187 | if (count) { |
3188 | e1000_tx_queue(adapter, tx_ring, tx_flags, count); | |
37e73df8 AD |
3189 | /* Make sure there is space in the ring for the next send. */ |
3190 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); | |
1da177e4 | 3191 | |
37e73df8 AD |
3192 | } else { |
3193 | dev_kfree_skb_any(skb); | |
3194 | tx_ring->buffer_info[first].time_stamp = 0; | |
3195 | tx_ring->next_to_use = first; | |
3196 | } | |
1da177e4 | 3197 | |
1da177e4 LT |
3198 | return NETDEV_TX_OK; |
3199 | } | |
3200 | ||
3201 | /** | |
3202 | * e1000_tx_timeout - Respond to a Tx Hang | |
3203 | * @netdev: network interface device structure | |
3204 | **/ | |
3205 | ||
64798845 | 3206 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3207 | { |
60490fe0 | 3208 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3209 | |
3210 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3211 | adapter->tx_timeout_count++; |
3212 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3213 | } |
3214 | ||
64798845 | 3215 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3216 | { |
65f27f38 DH |
3217 | struct e1000_adapter *adapter = |
3218 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3219 | |
338c15e4 | 3220 | e1000_reinit_safe(adapter); |
1da177e4 LT |
3221 | } |
3222 | ||
3223 | /** | |
3224 | * e1000_get_stats - Get System Network Statistics | |
3225 | * @netdev: network interface device structure | |
3226 | * | |
3227 | * Returns the address of the device statistics structure. | |
3228 | * The statistics are actually updated from the timer callback. | |
3229 | **/ | |
3230 | ||
64798845 | 3231 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3232 | { |
6b7660cd | 3233 | /* only return the current stats */ |
5fe31def | 3234 | return &netdev->stats; |
1da177e4 LT |
3235 | } |
3236 | ||
3237 | /** | |
3238 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3239 | * @netdev: network interface device structure | |
3240 | * @new_mtu: new value for maximum frame size | |
3241 | * | |
3242 | * Returns 0 on success, negative on failure | |
3243 | **/ | |
3244 | ||
64798845 | 3245 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3246 | { |
60490fe0 | 3247 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3248 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3249 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3250 | ||
96838a40 JB |
3251 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3252 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
feb8f478 | 3253 | e_err(probe, "Invalid MTU setting\n"); |
1da177e4 | 3254 | return -EINVAL; |
2d7edb92 | 3255 | } |
1da177e4 | 3256 | |
997f5cbd | 3257 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3258 | switch (hw->mac_type) { |
9e2feace | 3259 | case e1000_undefined ... e1000_82542_rev2_1: |
b7cb8c2c | 3260 | if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
feb8f478 | 3261 | e_err(probe, "Jumbo Frames not supported.\n"); |
2d7edb92 | 3262 | return -EINVAL; |
2d7edb92 | 3263 | } |
997f5cbd | 3264 | break; |
997f5cbd JK |
3265 | default: |
3266 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3267 | break; | |
1da177e4 LT |
3268 | } |
3269 | ||
3d6114e7 JB |
3270 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
3271 | msleep(1); | |
3272 | /* e1000_down has a dependency on max_frame_size */ | |
3273 | hw->max_frame_size = max_frame; | |
3274 | if (netif_running(netdev)) | |
3275 | e1000_down(adapter); | |
3276 | ||
87f5032e | 3277 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace | 3278 | * means we reserve 2 more, this pushes us to allocate from the next |
edbbb3ca JB |
3279 | * larger slab size. |
3280 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3281 | * however with the new *_jumbo_rx* routines, jumbo receives will use | |
3282 | * fragmented skbs */ | |
9e2feace | 3283 | |
9926146b | 3284 | if (max_frame <= E1000_RXBUFFER_2048) |
9e2feace | 3285 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
edbbb3ca JB |
3286 | else |
3287 | #if (PAGE_SIZE >= E1000_RXBUFFER_16384) | |
9e2feace | 3288 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
edbbb3ca JB |
3289 | #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
3290 | adapter->rx_buffer_len = PAGE_SIZE; | |
3291 | #endif | |
9e2feace AK |
3292 | |
3293 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3294 | if (!hw->tbi_compatibility_on && |
b7cb8c2c | 3295 | ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
9e2feace AK |
3296 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
3297 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3298 | |
675ad473 ET |
3299 | pr_info("%s changing MTU from %d to %d\n", |
3300 | netdev->name, netdev->mtu, new_mtu); | |
2d7edb92 MC |
3301 | netdev->mtu = new_mtu; |
3302 | ||
2db10a08 | 3303 | if (netif_running(netdev)) |
3d6114e7 JB |
3304 | e1000_up(adapter); |
3305 | else | |
3306 | e1000_reset(adapter); | |
3307 | ||
3308 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 | 3309 | |
1da177e4 LT |
3310 | return 0; |
3311 | } | |
3312 | ||
3313 | /** | |
3314 | * e1000_update_stats - Update the board statistics counters | |
3315 | * @adapter: board private structure | |
3316 | **/ | |
3317 | ||
64798845 | 3318 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 | 3319 | { |
5fe31def | 3320 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 3321 | struct e1000_hw *hw = &adapter->hw; |
282f33c9 | 3322 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3323 | unsigned long flags; |
406874a7 | 3324 | u16 phy_tmp; |
1da177e4 LT |
3325 | |
3326 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3327 | ||
282f33c9 LV |
3328 | /* |
3329 | * Prevent stats update while adapter is being reset, or if the pci | |
3330 | * connection is down. | |
3331 | */ | |
9026729b | 3332 | if (adapter->link_speed == 0) |
282f33c9 | 3333 | return; |
81b1955e | 3334 | if (pci_channel_offline(pdev)) |
9026729b AK |
3335 | return; |
3336 | ||
1da177e4 LT |
3337 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3338 | ||
828d055f | 3339 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3340 | * called from the interrupt context, so they must only |
3341 | * be written while holding adapter->stats_lock | |
3342 | */ | |
3343 | ||
1dc32918 JP |
3344 | adapter->stats.crcerrs += er32(CRCERRS); |
3345 | adapter->stats.gprc += er32(GPRC); | |
3346 | adapter->stats.gorcl += er32(GORCL); | |
3347 | adapter->stats.gorch += er32(GORCH); | |
3348 | adapter->stats.bprc += er32(BPRC); | |
3349 | adapter->stats.mprc += er32(MPRC); | |
3350 | adapter->stats.roc += er32(ROC); | |
3351 | ||
1532ecea JB |
3352 | adapter->stats.prc64 += er32(PRC64); |
3353 | adapter->stats.prc127 += er32(PRC127); | |
3354 | adapter->stats.prc255 += er32(PRC255); | |
3355 | adapter->stats.prc511 += er32(PRC511); | |
3356 | adapter->stats.prc1023 += er32(PRC1023); | |
3357 | adapter->stats.prc1522 += er32(PRC1522); | |
1dc32918 JP |
3358 | |
3359 | adapter->stats.symerrs += er32(SYMERRS); | |
3360 | adapter->stats.mpc += er32(MPC); | |
3361 | adapter->stats.scc += er32(SCC); | |
3362 | adapter->stats.ecol += er32(ECOL); | |
3363 | adapter->stats.mcc += er32(MCC); | |
3364 | adapter->stats.latecol += er32(LATECOL); | |
3365 | adapter->stats.dc += er32(DC); | |
3366 | adapter->stats.sec += er32(SEC); | |
3367 | adapter->stats.rlec += er32(RLEC); | |
3368 | adapter->stats.xonrxc += er32(XONRXC); | |
3369 | adapter->stats.xontxc += er32(XONTXC); | |
3370 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3371 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3372 | adapter->stats.fcruc += er32(FCRUC); | |
3373 | adapter->stats.gptc += er32(GPTC); | |
3374 | adapter->stats.gotcl += er32(GOTCL); | |
3375 | adapter->stats.gotch += er32(GOTCH); | |
3376 | adapter->stats.rnbc += er32(RNBC); | |
3377 | adapter->stats.ruc += er32(RUC); | |
3378 | adapter->stats.rfc += er32(RFC); | |
3379 | adapter->stats.rjc += er32(RJC); | |
3380 | adapter->stats.torl += er32(TORL); | |
3381 | adapter->stats.torh += er32(TORH); | |
3382 | adapter->stats.totl += er32(TOTL); | |
3383 | adapter->stats.toth += er32(TOTH); | |
3384 | adapter->stats.tpr += er32(TPR); | |
3385 | ||
1532ecea JB |
3386 | adapter->stats.ptc64 += er32(PTC64); |
3387 | adapter->stats.ptc127 += er32(PTC127); | |
3388 | adapter->stats.ptc255 += er32(PTC255); | |
3389 | adapter->stats.ptc511 += er32(PTC511); | |
3390 | adapter->stats.ptc1023 += er32(PTC1023); | |
3391 | adapter->stats.ptc1522 += er32(PTC1522); | |
1dc32918 JP |
3392 | |
3393 | adapter->stats.mptc += er32(MPTC); | |
3394 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3395 | |
3396 | /* used for adaptive IFS */ | |
3397 | ||
1dc32918 | 3398 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3399 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3400 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3401 | adapter->stats.colc += hw->collision_delta; |
3402 | ||
96838a40 | 3403 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3404 | adapter->stats.algnerrc += er32(ALGNERRC); |
3405 | adapter->stats.rxerrc += er32(RXERRC); | |
3406 | adapter->stats.tncrs += er32(TNCRS); | |
3407 | adapter->stats.cexterr += er32(CEXTERR); | |
3408 | adapter->stats.tsctc += er32(TSCTC); | |
3409 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 LT |
3410 | } |
3411 | ||
3412 | /* Fill out the OS statistics structure */ | |
5fe31def AK |
3413 | netdev->stats.multicast = adapter->stats.mprc; |
3414 | netdev->stats.collisions = adapter->stats.colc; | |
1da177e4 LT |
3415 | |
3416 | /* Rx Errors */ | |
3417 | ||
87041639 JK |
3418 | /* RLEC on some newer hardware can be incorrect so build |
3419 | * our own version based on RUC and ROC */ | |
5fe31def | 3420 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
1da177e4 | 3421 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
87041639 JK |
3422 | adapter->stats.ruc + adapter->stats.roc + |
3423 | adapter->stats.cexterr; | |
49559854 | 3424 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
5fe31def AK |
3425 | netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
3426 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; | |
3427 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3428 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
1da177e4 LT |
3429 | |
3430 | /* Tx Errors */ | |
49559854 | 3431 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
5fe31def AK |
3432 | netdev->stats.tx_errors = adapter->stats.txerrc; |
3433 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; | |
3434 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3435 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3436 | if (hw->bad_tx_carr_stats_fd && |
167fb284 | 3437 | adapter->link_duplex == FULL_DUPLEX) { |
5fe31def | 3438 | netdev->stats.tx_carrier_errors = 0; |
167fb284 JG |
3439 | adapter->stats.tncrs = 0; |
3440 | } | |
1da177e4 LT |
3441 | |
3442 | /* Tx Dropped needs to be maintained elsewhere */ | |
3443 | ||
3444 | /* Phy Stats */ | |
96838a40 JB |
3445 | if (hw->media_type == e1000_media_type_copper) { |
3446 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3447 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3448 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3449 | adapter->phy_stats.idle_errors += phy_tmp; | |
3450 | } | |
3451 | ||
96838a40 | 3452 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3453 | (hw->phy_type == e1000_phy_m88) && |
3454 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3455 | adapter->phy_stats.receive_errors += phy_tmp; | |
3456 | } | |
3457 | ||
15e376b4 | 3458 | /* Management Stats */ |
1dc32918 JP |
3459 | if (hw->has_smbus) { |
3460 | adapter->stats.mgptc += er32(MGTPTC); | |
3461 | adapter->stats.mgprc += er32(MGTPRC); | |
3462 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3463 | } |
3464 | ||
1da177e4 LT |
3465 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3466 | } | |
9ac98284 | 3467 | |
1da177e4 LT |
3468 | /** |
3469 | * e1000_intr - Interrupt Handler | |
3470 | * @irq: interrupt number | |
3471 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3472 | **/ |
3473 | ||
64798845 | 3474 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3475 | { |
3476 | struct net_device *netdev = data; | |
60490fe0 | 3477 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3478 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 3479 | u32 icr = er32(ICR); |
c3570acb | 3480 | |
4c11b8ad | 3481 | if (unlikely((!icr))) |
835bb129 JB |
3482 | return IRQ_NONE; /* Not our interrupt */ |
3483 | ||
4c11b8ad JB |
3484 | /* |
3485 | * we might have caused the interrupt, but the above | |
3486 | * read cleared it, and just in case the driver is | |
3487 | * down there is nothing to do so return handled | |
3488 | */ | |
3489 | if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) | |
3490 | return IRQ_HANDLED; | |
3491 | ||
96838a40 | 3492 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3493 | hw->get_link_status = 1; |
1314bbf3 AK |
3494 | /* guard against interrupt when we're going down */ |
3495 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3496 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3497 | } |
3498 | ||
1532ecea JB |
3499 | /* disable interrupts, without the synchronize_irq bit */ |
3500 | ew32(IMC, ~0); | |
3501 | E1000_WRITE_FLUSH(); | |
3502 | ||
288379f0 | 3503 | if (likely(napi_schedule_prep(&adapter->napi))) { |
835bb129 JB |
3504 | adapter->total_tx_bytes = 0; |
3505 | adapter->total_tx_packets = 0; | |
3506 | adapter->total_rx_bytes = 0; | |
3507 | adapter->total_rx_packets = 0; | |
288379f0 | 3508 | __napi_schedule(&adapter->napi); |
a6c42322 | 3509 | } else { |
90fb5135 AK |
3510 | /* this really should not happen! if it does it is basically a |
3511 | * bug, but not a hard error, so enable ints and continue */ | |
a6c42322 JB |
3512 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3513 | e1000_irq_enable(adapter); | |
3514 | } | |
1da177e4 | 3515 | |
1da177e4 LT |
3516 | return IRQ_HANDLED; |
3517 | } | |
3518 | ||
1da177e4 LT |
3519 | /** |
3520 | * e1000_clean - NAPI Rx polling callback | |
3521 | * @adapter: board private structure | |
3522 | **/ | |
64798845 | 3523 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3524 | { |
bea3348e | 3525 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
650b5a5c | 3526 | int tx_clean_complete = 0, work_done = 0; |
581d708e | 3527 | |
650b5a5c | 3528 | tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
581d708e | 3529 | |
650b5a5c | 3530 | adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
581d708e | 3531 | |
650b5a5c | 3532 | if (!tx_clean_complete) |
d2c7ddd6 DM |
3533 | work_done = budget; |
3534 | ||
53e52c72 DM |
3535 | /* If budget not fully consumed, exit the polling mode */ |
3536 | if (work_done < budget) { | |
835bb129 JB |
3537 | if (likely(adapter->itr_setting & 3)) |
3538 | e1000_set_itr(adapter); | |
288379f0 | 3539 | napi_complete(napi); |
a6c42322 JB |
3540 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3541 | e1000_irq_enable(adapter); | |
1da177e4 LT |
3542 | } |
3543 | ||
bea3348e | 3544 | return work_done; |
1da177e4 LT |
3545 | } |
3546 | ||
1da177e4 LT |
3547 | /** |
3548 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3549 | * @adapter: board private structure | |
3550 | **/ | |
64798845 JP |
3551 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3552 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3553 | { |
1dc32918 | 3554 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3555 | struct net_device *netdev = adapter->netdev; |
3556 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3557 | struct e1000_buffer *buffer_info; | |
3558 | unsigned int i, eop; | |
2a1af5d7 | 3559 | unsigned int count = 0; |
835bb129 | 3560 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3561 | |
3562 | i = tx_ring->next_to_clean; | |
3563 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3564 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3565 | ||
ccfb342c AD |
3566 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
3567 | (count < tx_ring->count)) { | |
843f4267 | 3568 | bool cleaned = false; |
2d0bb1c1 | 3569 | rmb(); /* read buffer_info after eop_desc */ |
843f4267 | 3570 | for ( ; !cleaned; count++) { |
1da177e4 LT |
3571 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3572 | buffer_info = &tx_ring->buffer_info[i]; | |
3573 | cleaned = (i == eop); | |
3574 | ||
835bb129 | 3575 | if (cleaned) { |
2b65326e | 3576 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
3577 | unsigned int segs, bytecount; |
3578 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
3579 | /* multiply data chunks by size of headers */ | |
3580 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
3581 | skb->len; | |
2b65326e | 3582 | total_tx_packets += segs; |
7753b171 | 3583 | total_tx_bytes += bytecount; |
835bb129 | 3584 | } |
fd803241 | 3585 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3586 | tx_desc->upper.data = 0; |
1da177e4 | 3587 | |
96838a40 | 3588 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3589 | } |
581d708e | 3590 | |
1da177e4 LT |
3591 | eop = tx_ring->buffer_info[i].next_to_watch; |
3592 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3593 | } | |
3594 | ||
3595 | tx_ring->next_to_clean = i; | |
3596 | ||
77b2aad5 | 3597 | #define TX_WAKE_THRESHOLD 32 |
843f4267 | 3598 | if (unlikely(count && netif_carrier_ok(netdev) && |
65c7973f JB |
3599 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
3600 | /* Make sure that anybody stopping the queue after this | |
3601 | * sees the new next_to_clean. | |
3602 | */ | |
3603 | smp_mb(); | |
cdd7549e JB |
3604 | |
3605 | if (netif_queue_stopped(netdev) && | |
3606 | !(test_bit(__E1000_DOWN, &adapter->flags))) { | |
77b2aad5 | 3607 | netif_wake_queue(netdev); |
fcfb1224 JB |
3608 | ++adapter->restart_queue; |
3609 | } | |
77b2aad5 | 3610 | } |
2648345f | 3611 | |
581d708e | 3612 | if (adapter->detect_tx_hung) { |
2648345f | 3613 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3614 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3615 | adapter->detect_tx_hung = false; |
cdd7549e JB |
3616 | if (tx_ring->buffer_info[eop].time_stamp && |
3617 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
8e95a202 JP |
3618 | (adapter->tx_timeout_factor * HZ)) && |
3619 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
70b8f1e1 MC |
3620 | |
3621 | /* detected Tx unit hang */ | |
feb8f478 | 3622 | e_err(drv, "Detected Tx Unit Hang\n" |
675ad473 ET |
3623 | " Tx Queue <%lu>\n" |
3624 | " TDH <%x>\n" | |
3625 | " TDT <%x>\n" | |
3626 | " next_to_use <%x>\n" | |
3627 | " next_to_clean <%x>\n" | |
3628 | "buffer_info[next_to_clean]\n" | |
3629 | " time_stamp <%lx>\n" | |
3630 | " next_to_watch <%x>\n" | |
3631 | " jiffies <%lx>\n" | |
3632 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3633 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3634 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3635 | readl(hw->hw_addr + tx_ring->tdh), |
3636 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3637 | tx_ring->next_to_use, |
392137fa | 3638 | tx_ring->next_to_clean, |
cdd7549e | 3639 | tx_ring->buffer_info[eop].time_stamp, |
70b8f1e1 MC |
3640 | eop, |
3641 | jiffies, | |
3642 | eop_desc->upper.fields.status); | |
1da177e4 | 3643 | netif_stop_queue(netdev); |
70b8f1e1 | 3644 | } |
1da177e4 | 3645 | } |
835bb129 JB |
3646 | adapter->total_tx_bytes += total_tx_bytes; |
3647 | adapter->total_tx_packets += total_tx_packets; | |
5fe31def AK |
3648 | netdev->stats.tx_bytes += total_tx_bytes; |
3649 | netdev->stats.tx_packets += total_tx_packets; | |
807540ba | 3650 | return count < tx_ring->count; |
1da177e4 LT |
3651 | } |
3652 | ||
3653 | /** | |
3654 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3655 | * @adapter: board private structure |
3656 | * @status_err: receive descriptor status and error fields | |
3657 | * @csum: receive descriptor csum field | |
3658 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3659 | **/ |
3660 | ||
64798845 JP |
3661 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3662 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3663 | { |
1dc32918 | 3664 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3665 | u16 status = (u16)status_err; |
3666 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
3667 | |
3668 | skb_checksum_none_assert(skb); | |
2d7edb92 | 3669 | |
1da177e4 | 3670 | /* 82543 or newer only */ |
1dc32918 | 3671 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3672 | /* Ignore Checksum bit is set */ |
96838a40 | 3673 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3674 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3675 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3676 | /* let the stack verify checksum errors */ |
1da177e4 | 3677 | adapter->hw_csum_err++; |
2d7edb92 MC |
3678 | return; |
3679 | } | |
3680 | /* TCP/UDP Checksum has not been calculated */ | |
1532ecea JB |
3681 | if (!(status & E1000_RXD_STAT_TCPCS)) |
3682 | return; | |
3683 | ||
2d7edb92 MC |
3684 | /* It must be a TCP or UDP packet with a valid checksum */ |
3685 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3686 | /* TCP checksum is good */ |
3687 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 3688 | } |
2d7edb92 | 3689 | adapter->hw_csum_good++; |
1da177e4 LT |
3690 | } |
3691 | ||
edbbb3ca JB |
3692 | /** |
3693 | * e1000_consume_page - helper function | |
3694 | **/ | |
3695 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
3696 | u16 length) | |
3697 | { | |
3698 | bi->page = NULL; | |
3699 | skb->len += length; | |
3700 | skb->data_len += length; | |
3701 | skb->truesize += length; | |
3702 | } | |
3703 | ||
3704 | /** | |
3705 | * e1000_receive_skb - helper function to handle rx indications | |
3706 | * @adapter: board private structure | |
3707 | * @status: descriptor status field as written by hardware | |
3708 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3709 | * @skb: pointer to sk_buff to be indicated to stack | |
3710 | */ | |
3711 | static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, | |
3712 | __le16 vlan, struct sk_buff *skb) | |
3713 | { | |
6a08d194 JB |
3714 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
3715 | ||
3716 | if ((unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP)))) | |
3717 | vlan_gro_receive(&adapter->napi, adapter->vlgrp, | |
3718 | le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK, | |
3719 | skb); | |
3720 | else | |
3721 | napi_gro_receive(&adapter->napi, skb); | |
edbbb3ca JB |
3722 | } |
3723 | ||
3724 | /** | |
3725 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
3726 | * @adapter: board private structure | |
3727 | * @rx_ring: ring to clean | |
3728 | * @work_done: amount of napi work completed this call | |
3729 | * @work_to_do: max amount of work allowed for this call to do | |
3730 | * | |
3731 | * the return value indicates whether actual cleaning was done, there | |
3732 | * is no guarantee that everything was cleaned | |
3733 | */ | |
3734 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
3735 | struct e1000_rx_ring *rx_ring, | |
3736 | int *work_done, int work_to_do) | |
3737 | { | |
3738 | struct e1000_hw *hw = &adapter->hw; | |
3739 | struct net_device *netdev = adapter->netdev; | |
3740 | struct pci_dev *pdev = adapter->pdev; | |
3741 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
3742 | struct e1000_buffer *buffer_info, *next_buffer; | |
3743 | unsigned long irq_flags; | |
3744 | u32 length; | |
3745 | unsigned int i; | |
3746 | int cleaned_count = 0; | |
3747 | bool cleaned = false; | |
3748 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
3749 | ||
3750 | i = rx_ring->next_to_clean; | |
3751 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3752 | buffer_info = &rx_ring->buffer_info[i]; | |
3753 | ||
3754 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
3755 | struct sk_buff *skb; | |
3756 | u8 status; | |
3757 | ||
3758 | if (*work_done >= work_to_do) | |
3759 | break; | |
3760 | (*work_done)++; | |
2d0bb1c1 | 3761 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
edbbb3ca JB |
3762 | |
3763 | status = rx_desc->status; | |
3764 | skb = buffer_info->skb; | |
3765 | buffer_info->skb = NULL; | |
3766 | ||
3767 | if (++i == rx_ring->count) i = 0; | |
3768 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3769 | prefetch(next_rxd); | |
3770 | ||
3771 | next_buffer = &rx_ring->buffer_info[i]; | |
3772 | ||
3773 | cleaned = true; | |
3774 | cleaned_count++; | |
b16f53be NN |
3775 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
3776 | buffer_info->length, DMA_FROM_DEVICE); | |
edbbb3ca JB |
3777 | buffer_info->dma = 0; |
3778 | ||
3779 | length = le16_to_cpu(rx_desc->length); | |
3780 | ||
3781 | /* errors is only valid for DD + EOP descriptors */ | |
3782 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
3783 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
3784 | u8 last_byte = *(skb->data + length - 1); | |
3785 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, | |
3786 | last_byte)) { | |
3787 | spin_lock_irqsave(&adapter->stats_lock, | |
3788 | irq_flags); | |
3789 | e1000_tbi_adjust_stats(hw, &adapter->stats, | |
3790 | length, skb->data); | |
3791 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3792 | irq_flags); | |
3793 | length--; | |
3794 | } else { | |
3795 | /* recycle both page and skb */ | |
3796 | buffer_info->skb = skb; | |
3797 | /* an error means any chain goes out the window | |
3798 | * too */ | |
3799 | if (rx_ring->rx_skb_top) | |
3800 | dev_kfree_skb(rx_ring->rx_skb_top); | |
3801 | rx_ring->rx_skb_top = NULL; | |
3802 | goto next_desc; | |
3803 | } | |
3804 | } | |
3805 | ||
3806 | #define rxtop rx_ring->rx_skb_top | |
3807 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3808 | /* this descriptor is only the beginning (or middle) */ | |
3809 | if (!rxtop) { | |
3810 | /* this is the beginning of a chain */ | |
3811 | rxtop = skb; | |
3812 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
3813 | 0, length); | |
3814 | } else { | |
3815 | /* this is the middle of a chain */ | |
3816 | skb_fill_page_desc(rxtop, | |
3817 | skb_shinfo(rxtop)->nr_frags, | |
3818 | buffer_info->page, 0, length); | |
3819 | /* re-use the skb, only consumed the page */ | |
3820 | buffer_info->skb = skb; | |
3821 | } | |
3822 | e1000_consume_page(buffer_info, rxtop, length); | |
3823 | goto next_desc; | |
3824 | } else { | |
3825 | if (rxtop) { | |
3826 | /* end of the chain */ | |
3827 | skb_fill_page_desc(rxtop, | |
3828 | skb_shinfo(rxtop)->nr_frags, | |
3829 | buffer_info->page, 0, length); | |
3830 | /* re-use the current skb, we only consumed the | |
3831 | * page */ | |
3832 | buffer_info->skb = skb; | |
3833 | skb = rxtop; | |
3834 | rxtop = NULL; | |
3835 | e1000_consume_page(buffer_info, skb, length); | |
3836 | } else { | |
3837 | /* no chain, got EOP, this buf is the packet | |
3838 | * copybreak to save the put_page/alloc_page */ | |
3839 | if (length <= copybreak && | |
3840 | skb_tailroom(skb) >= length) { | |
3841 | u8 *vaddr; | |
3842 | vaddr = kmap_atomic(buffer_info->page, | |
3843 | KM_SKB_DATA_SOFTIRQ); | |
3844 | memcpy(skb_tail_pointer(skb), vaddr, length); | |
3845 | kunmap_atomic(vaddr, | |
3846 | KM_SKB_DATA_SOFTIRQ); | |
3847 | /* re-use the page, so don't erase | |
3848 | * buffer_info->page */ | |
3849 | skb_put(skb, length); | |
3850 | } else { | |
3851 | skb_fill_page_desc(skb, 0, | |
3852 | buffer_info->page, 0, | |
3853 | length); | |
3854 | e1000_consume_page(buffer_info, skb, | |
3855 | length); | |
3856 | } | |
3857 | } | |
3858 | } | |
3859 | ||
3860 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
3861 | e1000_rx_checksum(adapter, | |
3862 | (u32)(status) | | |
3863 | ((u32)(rx_desc->errors) << 24), | |
3864 | le16_to_cpu(rx_desc->csum), skb); | |
3865 | ||
3866 | pskb_trim(skb, skb->len - 4); | |
3867 | ||
3868 | /* probably a little skewed due to removing CRC */ | |
3869 | total_rx_bytes += skb->len; | |
3870 | total_rx_packets++; | |
3871 | ||
3872 | /* eth type trans needs skb->data to point to something */ | |
3873 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
feb8f478 | 3874 | e_err(drv, "pskb_may_pull failed.\n"); |
edbbb3ca JB |
3875 | dev_kfree_skb(skb); |
3876 | goto next_desc; | |
3877 | } | |
3878 | ||
edbbb3ca JB |
3879 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
3880 | ||
3881 | next_desc: | |
3882 | rx_desc->status = 0; | |
3883 | ||
3884 | /* return some buffers to hardware, one at a time is too slow */ | |
3885 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3886 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3887 | cleaned_count = 0; | |
3888 | } | |
3889 | ||
3890 | /* use prefetched values */ | |
3891 | rx_desc = next_rxd; | |
3892 | buffer_info = next_buffer; | |
3893 | } | |
3894 | rx_ring->next_to_clean = i; | |
3895 | ||
3896 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3897 | if (cleaned_count) | |
3898 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3899 | ||
3900 | adapter->total_rx_packets += total_rx_packets; | |
3901 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3902 | netdev->stats.rx_bytes += total_rx_bytes; |
3903 | netdev->stats.rx_packets += total_rx_packets; | |
edbbb3ca JB |
3904 | return cleaned; |
3905 | } | |
3906 | ||
57bf6eef JP |
3907 | /* |
3908 | * this should improve performance for small packets with large amounts | |
3909 | * of reassembly being done in the stack | |
3910 | */ | |
3911 | static void e1000_check_copybreak(struct net_device *netdev, | |
3912 | struct e1000_buffer *buffer_info, | |
3913 | u32 length, struct sk_buff **skb) | |
3914 | { | |
3915 | struct sk_buff *new_skb; | |
3916 | ||
3917 | if (length > copybreak) | |
3918 | return; | |
3919 | ||
3920 | new_skb = netdev_alloc_skb_ip_align(netdev, length); | |
3921 | if (!new_skb) | |
3922 | return; | |
3923 | ||
3924 | skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, | |
3925 | (*skb)->data - NET_IP_ALIGN, | |
3926 | length + NET_IP_ALIGN); | |
3927 | /* save the skb in buffer_info as good */ | |
3928 | buffer_info->skb = *skb; | |
3929 | *skb = new_skb; | |
3930 | } | |
3931 | ||
1da177e4 | 3932 | /** |
2d7edb92 | 3933 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 | 3934 | * @adapter: board private structure |
edbbb3ca JB |
3935 | * @rx_ring: ring to clean |
3936 | * @work_done: amount of napi work completed this call | |
3937 | * @work_to_do: max amount of work allowed for this call to do | |
3938 | */ | |
64798845 JP |
3939 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3940 | struct e1000_rx_ring *rx_ring, | |
3941 | int *work_done, int work_to_do) | |
1da177e4 | 3942 | { |
1dc32918 | 3943 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3944 | struct net_device *netdev = adapter->netdev; |
3945 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3946 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3947 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 3948 | unsigned long flags; |
406874a7 | 3949 | u32 length; |
1da177e4 | 3950 | unsigned int i; |
72d64a43 | 3951 | int cleaned_count = 0; |
c3033b01 | 3952 | bool cleaned = false; |
835bb129 | 3953 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
3954 | |
3955 | i = rx_ring->next_to_clean; | |
3956 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3957 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3958 | |
b92ff8ee | 3959 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 3960 | struct sk_buff *skb; |
a292ca6e | 3961 | u8 status; |
90fb5135 | 3962 | |
96838a40 | 3963 | if (*work_done >= work_to_do) |
1da177e4 LT |
3964 | break; |
3965 | (*work_done)++; | |
2d0bb1c1 | 3966 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
c3570acb | 3967 | |
a292ca6e | 3968 | status = rx_desc->status; |
b92ff8ee | 3969 | skb = buffer_info->skb; |
86c3d59f JB |
3970 | buffer_info->skb = NULL; |
3971 | ||
30320be8 JK |
3972 | prefetch(skb->data - NET_IP_ALIGN); |
3973 | ||
86c3d59f JB |
3974 | if (++i == rx_ring->count) i = 0; |
3975 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
3976 | prefetch(next_rxd); |
3977 | ||
86c3d59f | 3978 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3979 | |
c3033b01 | 3980 | cleaned = true; |
72d64a43 | 3981 | cleaned_count++; |
b16f53be NN |
3982 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
3983 | buffer_info->length, DMA_FROM_DEVICE); | |
679be3ba | 3984 | buffer_info->dma = 0; |
1da177e4 | 3985 | |
1da177e4 | 3986 | length = le16_to_cpu(rx_desc->length); |
ea30e119 | 3987 | /* !EOP means multiple descriptors were used to store a single |
40a14dea JB |
3988 | * packet, if thats the case we need to toss it. In fact, we |
3989 | * to toss every packet with the EOP bit clear and the next | |
3990 | * frame that _does_ have the EOP bit set, as it is by | |
3991 | * definition only a frame fragment | |
3992 | */ | |
3993 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
3994 | adapter->discarding = true; | |
3995 | ||
3996 | if (adapter->discarding) { | |
a1415ee6 | 3997 | /* All receives must fit into a single buffer */ |
feb8f478 | 3998 | e_dbg("Receive packet consumed multiple buffers\n"); |
864c4e45 | 3999 | /* recycle */ |
8fc897b0 | 4000 | buffer_info->skb = skb; |
40a14dea JB |
4001 | if (status & E1000_RXD_STAT_EOP) |
4002 | adapter->discarding = false; | |
1da177e4 LT |
4003 | goto next_desc; |
4004 | } | |
4005 | ||
96838a40 | 4006 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
edbbb3ca | 4007 | u8 last_byte = *(skb->data + length - 1); |
1dc32918 JP |
4008 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
4009 | last_byte)) { | |
1da177e4 | 4010 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4011 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
4012 | length, skb->data); |
4013 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4014 | flags); | |
4015 | length--; | |
4016 | } else { | |
9e2feace AK |
4017 | /* recycle */ |
4018 | buffer_info->skb = skb; | |
1da177e4 LT |
4019 | goto next_desc; |
4020 | } | |
1cb5821f | 4021 | } |
1da177e4 | 4022 | |
d2a1e213 JB |
4023 | /* adjust length to remove Ethernet CRC, this must be |
4024 | * done after the TBI_ACCEPT workaround above */ | |
4025 | length -= 4; | |
4026 | ||
835bb129 JB |
4027 | /* probably a little skewed due to removing CRC */ |
4028 | total_rx_bytes += length; | |
4029 | total_rx_packets++; | |
4030 | ||
57bf6eef JP |
4031 | e1000_check_copybreak(netdev, buffer_info, length, &skb); |
4032 | ||
996695de | 4033 | skb_put(skb, length); |
1da177e4 LT |
4034 | |
4035 | /* Receive Checksum Offload */ | |
a292ca6e | 4036 | e1000_rx_checksum(adapter, |
406874a7 JP |
4037 | (u32)(status) | |
4038 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4039 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4040 | |
edbbb3ca | 4041 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
c3570acb | 4042 | |
1da177e4 LT |
4043 | next_desc: |
4044 | rx_desc->status = 0; | |
1da177e4 | 4045 | |
72d64a43 JK |
4046 | /* return some buffers to hardware, one at a time is too slow */ |
4047 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4048 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4049 | cleaned_count = 0; | |
4050 | } | |
4051 | ||
30320be8 | 4052 | /* use prefetched values */ |
86c3d59f JB |
4053 | rx_desc = next_rxd; |
4054 | buffer_info = next_buffer; | |
1da177e4 | 4055 | } |
1da177e4 | 4056 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4057 | |
4058 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4059 | if (cleaned_count) | |
4060 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4061 | |
835bb129 JB |
4062 | adapter->total_rx_packets += total_rx_packets; |
4063 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
4064 | netdev->stats.rx_bytes += total_rx_bytes; |
4065 | netdev->stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4066 | return cleaned; |
4067 | } | |
4068 | ||
edbbb3ca JB |
4069 | /** |
4070 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
4071 | * @adapter: address of board private structure | |
4072 | * @rx_ring: pointer to receive ring structure | |
4073 | * @cleaned_count: number of buffers to allocate this pass | |
4074 | **/ | |
4075 | ||
4076 | static void | |
4077 | e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
4078 | struct e1000_rx_ring *rx_ring, int cleaned_count) | |
4079 | { | |
4080 | struct net_device *netdev = adapter->netdev; | |
4081 | struct pci_dev *pdev = adapter->pdev; | |
4082 | struct e1000_rx_desc *rx_desc; | |
4083 | struct e1000_buffer *buffer_info; | |
4084 | struct sk_buff *skb; | |
4085 | unsigned int i; | |
89d71a66 | 4086 | unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
edbbb3ca JB |
4087 | |
4088 | i = rx_ring->next_to_use; | |
4089 | buffer_info = &rx_ring->buffer_info[i]; | |
4090 | ||
4091 | while (cleaned_count--) { | |
4092 | skb = buffer_info->skb; | |
4093 | if (skb) { | |
4094 | skb_trim(skb, 0); | |
4095 | goto check_page; | |
4096 | } | |
4097 | ||
89d71a66 | 4098 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4099 | if (unlikely(!skb)) { |
4100 | /* Better luck next round */ | |
4101 | adapter->alloc_rx_buff_failed++; | |
4102 | break; | |
4103 | } | |
4104 | ||
4105 | /* Fix for errata 23, can't cross 64kB boundary */ | |
4106 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4107 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4108 | e_err(rx_err, "skb align check failed: %u bytes at " |
4109 | "%p\n", bufsz, skb->data); | |
edbbb3ca | 4110 | /* Try again, without freeing the previous */ |
89d71a66 | 4111 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4112 | /* Failed allocation, critical failure */ |
4113 | if (!skb) { | |
4114 | dev_kfree_skb(oldskb); | |
4115 | adapter->alloc_rx_buff_failed++; | |
4116 | break; | |
4117 | } | |
4118 | ||
4119 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4120 | /* give up */ | |
4121 | dev_kfree_skb(skb); | |
4122 | dev_kfree_skb(oldskb); | |
4123 | break; /* while (cleaned_count--) */ | |
4124 | } | |
4125 | ||
4126 | /* Use new allocation */ | |
4127 | dev_kfree_skb(oldskb); | |
4128 | } | |
edbbb3ca JB |
4129 | buffer_info->skb = skb; |
4130 | buffer_info->length = adapter->rx_buffer_len; | |
4131 | check_page: | |
4132 | /* allocate a new page if necessary */ | |
4133 | if (!buffer_info->page) { | |
4134 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
4135 | if (unlikely(!buffer_info->page)) { | |
4136 | adapter->alloc_rx_buff_failed++; | |
4137 | break; | |
4138 | } | |
4139 | } | |
4140 | ||
b5abb028 | 4141 | if (!buffer_info->dma) { |
b16f53be | 4142 | buffer_info->dma = dma_map_page(&pdev->dev, |
edbbb3ca | 4143 | buffer_info->page, 0, |
b16f53be NN |
4144 | buffer_info->length, |
4145 | DMA_FROM_DEVICE); | |
4146 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4147 | put_page(buffer_info->page); |
4148 | dev_kfree_skb(skb); | |
4149 | buffer_info->page = NULL; | |
4150 | buffer_info->skb = NULL; | |
4151 | buffer_info->dma = 0; | |
4152 | adapter->alloc_rx_buff_failed++; | |
4153 | break; /* while !buffer_info->skb */ | |
4154 | } | |
4155 | } | |
edbbb3ca JB |
4156 | |
4157 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
4158 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4159 | ||
4160 | if (unlikely(++i == rx_ring->count)) | |
4161 | i = 0; | |
4162 | buffer_info = &rx_ring->buffer_info[i]; | |
4163 | } | |
4164 | ||
4165 | if (likely(rx_ring->next_to_use != i)) { | |
4166 | rx_ring->next_to_use = i; | |
4167 | if (unlikely(i-- == 0)) | |
4168 | i = (rx_ring->count - 1); | |
4169 | ||
4170 | /* Force memory writes to complete before letting h/w | |
4171 | * know there are new descriptors to fetch. (Only | |
4172 | * applicable for weak-ordered memory model archs, | |
4173 | * such as IA-64). */ | |
4174 | wmb(); | |
4175 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4176 | } | |
4177 | } | |
4178 | ||
1da177e4 | 4179 | /** |
2d7edb92 | 4180 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4181 | * @adapter: address of board private structure |
4182 | **/ | |
4183 | ||
64798845 JP |
4184 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4185 | struct e1000_rx_ring *rx_ring, | |
4186 | int cleaned_count) | |
1da177e4 | 4187 | { |
1dc32918 | 4188 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4189 | struct net_device *netdev = adapter->netdev; |
4190 | struct pci_dev *pdev = adapter->pdev; | |
4191 | struct e1000_rx_desc *rx_desc; | |
4192 | struct e1000_buffer *buffer_info; | |
4193 | struct sk_buff *skb; | |
2648345f | 4194 | unsigned int i; |
89d71a66 | 4195 | unsigned int bufsz = adapter->rx_buffer_len; |
1da177e4 LT |
4196 | |
4197 | i = rx_ring->next_to_use; | |
4198 | buffer_info = &rx_ring->buffer_info[i]; | |
4199 | ||
a292ca6e | 4200 | while (cleaned_count--) { |
ca6f7224 CH |
4201 | skb = buffer_info->skb; |
4202 | if (skb) { | |
a292ca6e JK |
4203 | skb_trim(skb, 0); |
4204 | goto map_skb; | |
4205 | } | |
4206 | ||
89d71a66 | 4207 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
96838a40 | 4208 | if (unlikely(!skb)) { |
1da177e4 | 4209 | /* Better luck next round */ |
72d64a43 | 4210 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4211 | break; |
4212 | } | |
4213 | ||
2648345f | 4214 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4215 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4216 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4217 | e_err(rx_err, "skb align check failed: %u bytes at " |
4218 | "%p\n", bufsz, skb->data); | |
2648345f | 4219 | /* Try again, without freeing the previous */ |
89d71a66 | 4220 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
2648345f | 4221 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4222 | if (!skb) { |
4223 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4224 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4225 | break; |
4226 | } | |
2648345f | 4227 | |
1da177e4 LT |
4228 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4229 | /* give up */ | |
4230 | dev_kfree_skb(skb); | |
4231 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4232 | adapter->alloc_rx_buff_failed++; |
1da177e4 | 4233 | break; /* while !buffer_info->skb */ |
1da177e4 | 4234 | } |
ca6f7224 CH |
4235 | |
4236 | /* Use new allocation */ | |
4237 | dev_kfree_skb(oldskb); | |
1da177e4 | 4238 | } |
1da177e4 LT |
4239 | buffer_info->skb = skb; |
4240 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4241 | map_skb: |
b16f53be | 4242 | buffer_info->dma = dma_map_single(&pdev->dev, |
1da177e4 | 4243 | skb->data, |
edbbb3ca | 4244 | buffer_info->length, |
b16f53be NN |
4245 | DMA_FROM_DEVICE); |
4246 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4247 | dev_kfree_skb(skb); |
4248 | buffer_info->skb = NULL; | |
4249 | buffer_info->dma = 0; | |
4250 | adapter->alloc_rx_buff_failed++; | |
4251 | break; /* while !buffer_info->skb */ | |
4252 | } | |
1da177e4 | 4253 | |
edbbb3ca JB |
4254 | /* |
4255 | * XXX if it was allocated cleanly it will never map to a | |
4256 | * boundary crossing | |
4257 | */ | |
4258 | ||
2648345f MC |
4259 | /* Fix for errata 23, can't cross 64kB boundary */ |
4260 | if (!e1000_check_64k_bound(adapter, | |
4261 | (void *)(unsigned long)buffer_info->dma, | |
4262 | adapter->rx_buffer_len)) { | |
feb8f478 ET |
4263 | e_err(rx_err, "dma align check failed: %u bytes at " |
4264 | "%p\n", adapter->rx_buffer_len, | |
675ad473 | 4265 | (void *)(unsigned long)buffer_info->dma); |
1da177e4 LT |
4266 | dev_kfree_skb(skb); |
4267 | buffer_info->skb = NULL; | |
4268 | ||
b16f53be | 4269 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
1da177e4 | 4270 | adapter->rx_buffer_len, |
b16f53be | 4271 | DMA_FROM_DEVICE); |
679be3ba | 4272 | buffer_info->dma = 0; |
1da177e4 | 4273 | |
edbbb3ca | 4274 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4275 | break; /* while !buffer_info->skb */ |
4276 | } | |
1da177e4 LT |
4277 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4278 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4279 | ||
96838a40 JB |
4280 | if (unlikely(++i == rx_ring->count)) |
4281 | i = 0; | |
1da177e4 LT |
4282 | buffer_info = &rx_ring->buffer_info[i]; |
4283 | } | |
4284 | ||
b92ff8ee JB |
4285 | if (likely(rx_ring->next_to_use != i)) { |
4286 | rx_ring->next_to_use = i; | |
4287 | if (unlikely(i-- == 0)) | |
4288 | i = (rx_ring->count - 1); | |
4289 | ||
4290 | /* Force memory writes to complete before letting h/w | |
4291 | * know there are new descriptors to fetch. (Only | |
4292 | * applicable for weak-ordered memory model archs, | |
4293 | * such as IA-64). */ | |
4294 | wmb(); | |
1dc32918 | 4295 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4296 | } |
1da177e4 LT |
4297 | } |
4298 | ||
4299 | /** | |
4300 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4301 | * @adapter: | |
4302 | **/ | |
4303 | ||
64798845 | 4304 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4305 | { |
1dc32918 | 4306 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4307 | u16 phy_status; |
4308 | u16 phy_ctrl; | |
1da177e4 | 4309 | |
1dc32918 JP |
4310 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4311 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4312 | return; |
4313 | ||
96838a40 | 4314 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4315 | /* If Master/Slave config fault is asserted twice, |
4316 | * we assume back-to-back */ | |
1dc32918 | 4317 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4318 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4319 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4320 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4321 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4322 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4323 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4324 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4325 | phy_ctrl); |
4326 | adapter->smartspeed++; | |
1dc32918 JP |
4327 | if (!e1000_phy_setup_autoneg(hw) && |
4328 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4329 | &phy_ctrl)) { |
4330 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4331 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4332 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4333 | phy_ctrl); |
4334 | } | |
4335 | } | |
4336 | return; | |
96838a40 | 4337 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4338 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4339 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4340 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4341 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4342 | if (!e1000_phy_setup_autoneg(hw) && | |
4343 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4344 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4345 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4346 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4347 | } |
4348 | } | |
4349 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4350 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4351 | adapter->smartspeed = 0; |
4352 | } | |
4353 | ||
4354 | /** | |
4355 | * e1000_ioctl - | |
4356 | * @netdev: | |
4357 | * @ifreq: | |
4358 | * @cmd: | |
4359 | **/ | |
4360 | ||
64798845 | 4361 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4362 | { |
4363 | switch (cmd) { | |
4364 | case SIOCGMIIPHY: | |
4365 | case SIOCGMIIREG: | |
4366 | case SIOCSMIIREG: | |
4367 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4368 | default: | |
4369 | return -EOPNOTSUPP; | |
4370 | } | |
4371 | } | |
4372 | ||
4373 | /** | |
4374 | * e1000_mii_ioctl - | |
4375 | * @netdev: | |
4376 | * @ifreq: | |
4377 | * @cmd: | |
4378 | **/ | |
4379 | ||
64798845 JP |
4380 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4381 | int cmd) | |
1da177e4 | 4382 | { |
60490fe0 | 4383 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4384 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4385 | struct mii_ioctl_data *data = if_mii(ifr); |
4386 | int retval; | |
406874a7 JP |
4387 | u16 mii_reg; |
4388 | u16 spddplx; | |
97876fc6 | 4389 | unsigned long flags; |
1da177e4 | 4390 | |
1dc32918 | 4391 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4392 | return -EOPNOTSUPP; |
4393 | ||
4394 | switch (cmd) { | |
4395 | case SIOCGMIIPHY: | |
1dc32918 | 4396 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4397 | break; |
4398 | case SIOCGMIIREG: | |
97876fc6 | 4399 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4400 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4401 | &data->val_out)) { |
4402 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4403 | return -EIO; |
97876fc6 MC |
4404 | } |
4405 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4406 | break; |
4407 | case SIOCSMIIREG: | |
96838a40 | 4408 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4409 | return -EFAULT; |
4410 | mii_reg = data->val_in; | |
97876fc6 | 4411 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4412 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4413 | mii_reg)) { |
4414 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4415 | return -EIO; |
97876fc6 | 4416 | } |
f0163ac4 | 4417 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4418 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4419 | switch (data->reg_num) { |
4420 | case PHY_CTRL: | |
96838a40 | 4421 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4422 | break; |
96838a40 | 4423 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4424 | hw->autoneg = 1; |
4425 | hw->autoneg_advertised = 0x2F; | |
1da177e4 LT |
4426 | } else { |
4427 | if (mii_reg & 0x40) | |
4428 | spddplx = SPEED_1000; | |
4429 | else if (mii_reg & 0x2000) | |
4430 | spddplx = SPEED_100; | |
4431 | else | |
4432 | spddplx = SPEED_10; | |
4433 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4434 | ? DUPLEX_FULL : |
4435 | DUPLEX_HALF; | |
1da177e4 LT |
4436 | retval = e1000_set_spd_dplx(adapter, |
4437 | spddplx); | |
f0163ac4 | 4438 | if (retval) |
1da177e4 LT |
4439 | return retval; |
4440 | } | |
2db10a08 AK |
4441 | if (netif_running(adapter->netdev)) |
4442 | e1000_reinit_locked(adapter); | |
4443 | else | |
1da177e4 LT |
4444 | e1000_reset(adapter); |
4445 | break; | |
4446 | case M88E1000_PHY_SPEC_CTRL: | |
4447 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4448 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4449 | return -EIO; |
4450 | break; | |
4451 | } | |
4452 | } else { | |
4453 | switch (data->reg_num) { | |
4454 | case PHY_CTRL: | |
96838a40 | 4455 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4456 | break; |
2db10a08 AK |
4457 | if (netif_running(adapter->netdev)) |
4458 | e1000_reinit_locked(adapter); | |
4459 | else | |
1da177e4 LT |
4460 | e1000_reset(adapter); |
4461 | break; | |
4462 | } | |
4463 | } | |
4464 | break; | |
4465 | default: | |
4466 | return -EOPNOTSUPP; | |
4467 | } | |
4468 | return E1000_SUCCESS; | |
4469 | } | |
4470 | ||
64798845 | 4471 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4472 | { |
4473 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4474 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4475 | |
96838a40 | 4476 | if (ret_val) |
feb8f478 | 4477 | e_err(probe, "Error in setting MWI\n"); |
1da177e4 LT |
4478 | } |
4479 | ||
64798845 | 4480 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4481 | { |
4482 | struct e1000_adapter *adapter = hw->back; | |
4483 | ||
4484 | pci_clear_mwi(adapter->pdev); | |
4485 | } | |
4486 | ||
64798845 | 4487 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4488 | { |
4489 | struct e1000_adapter *adapter = hw->back; | |
4490 | return pcix_get_mmrbc(adapter->pdev); | |
4491 | } | |
4492 | ||
64798845 | 4493 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4494 | { |
4495 | struct e1000_adapter *adapter = hw->back; | |
4496 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4497 | } | |
4498 | ||
64798845 | 4499 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4500 | { |
4501 | outl(value, port); | |
4502 | } | |
4503 | ||
64798845 JP |
4504 | static void e1000_vlan_rx_register(struct net_device *netdev, |
4505 | struct vlan_group *grp) | |
1da177e4 | 4506 | { |
60490fe0 | 4507 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4508 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4509 | u32 ctrl, rctl; |
1da177e4 | 4510 | |
9150b76a JB |
4511 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4512 | e1000_irq_disable(adapter); | |
1da177e4 LT |
4513 | adapter->vlgrp = grp; |
4514 | ||
96838a40 | 4515 | if (grp) { |
1da177e4 | 4516 | /* enable VLAN tag insert/strip */ |
1dc32918 | 4517 | ctrl = er32(CTRL); |
1da177e4 | 4518 | ctrl |= E1000_CTRL_VME; |
1dc32918 | 4519 | ew32(CTRL, ctrl); |
1da177e4 | 4520 | |
1532ecea JB |
4521 | /* enable VLAN receive filtering */ |
4522 | rctl = er32(RCTL); | |
4523 | rctl &= ~E1000_RCTL_CFIEN; | |
4524 | if (!(netdev->flags & IFF_PROMISC)) | |
4525 | rctl |= E1000_RCTL_VFE; | |
4526 | ew32(RCTL, rctl); | |
4527 | e1000_update_mng_vlan(adapter); | |
1da177e4 LT |
4528 | } else { |
4529 | /* disable VLAN tag insert/strip */ | |
1dc32918 | 4530 | ctrl = er32(CTRL); |
1da177e4 | 4531 | ctrl &= ~E1000_CTRL_VME; |
1dc32918 | 4532 | ew32(CTRL, ctrl); |
1da177e4 | 4533 | |
1532ecea JB |
4534 | /* disable VLAN receive filtering */ |
4535 | rctl = er32(RCTL); | |
4536 | rctl &= ~E1000_RCTL_VFE; | |
4537 | ew32(RCTL, rctl); | |
fd38d7a0 | 4538 | |
1532ecea | 4539 | if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
120a5d0d | 4540 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1532ecea | 4541 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
cd94dd0b | 4542 | } |
1da177e4 LT |
4543 | } |
4544 | ||
9150b76a JB |
4545 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4546 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4547 | } |
4548 | ||
64798845 | 4549 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4550 | { |
60490fe0 | 4551 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4552 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4553 | u32 vfta, index; |
96838a40 | 4554 | |
1dc32918 | 4555 | if ((hw->mng_cookie.status & |
96838a40 JB |
4556 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4557 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4558 | return; |
1da177e4 LT |
4559 | /* add VID to filter table */ |
4560 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4561 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4562 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4563 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4564 | } |
4565 | ||
64798845 | 4566 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4567 | { |
60490fe0 | 4568 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4569 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4570 | u32 vfta, index; |
1da177e4 | 4571 | |
9150b76a JB |
4572 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4573 | e1000_irq_disable(adapter); | |
5c15bdec | 4574 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
9150b76a JB |
4575 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4576 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4577 | |
4578 | /* remove VID from filter table */ | |
4579 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4580 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4581 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4582 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4583 | } |
4584 | ||
64798845 | 4585 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 LT |
4586 | { |
4587 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4588 | ||
96838a40 | 4589 | if (adapter->vlgrp) { |
406874a7 | 4590 | u16 vid; |
b738127d | 4591 | for (vid = 0; vid < VLAN_N_VID; vid++) { |
5c15bdec | 4592 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
4593 | continue; |
4594 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4595 | } | |
4596 | } | |
4597 | } | |
4598 | ||
64798845 | 4599 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
1da177e4 | 4600 | { |
1dc32918 JP |
4601 | struct e1000_hw *hw = &adapter->hw; |
4602 | ||
4603 | hw->autoneg = 0; | |
1da177e4 | 4604 | |
6921368f | 4605 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4606 | if ((hw->media_type == e1000_media_type_fiber) && |
6921368f | 4607 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
feb8f478 | 4608 | e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
6921368f MC |
4609 | return -EINVAL; |
4610 | } | |
4611 | ||
96838a40 | 4612 | switch (spddplx) { |
1da177e4 | 4613 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4614 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4615 | break; |
4616 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4617 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4618 | break; |
4619 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4620 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4621 | break; |
4622 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4623 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4624 | break; |
4625 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4626 | hw->autoneg = 1; |
4627 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4628 | break; |
4629 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4630 | default: | |
feb8f478 | 4631 | e_err(probe, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4632 | return -EINVAL; |
4633 | } | |
4634 | return 0; | |
4635 | } | |
4636 | ||
b43fcd7d | 4637 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
1da177e4 LT |
4638 | { |
4639 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4640 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4641 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4642 | u32 ctrl, ctrl_ext, rctl, status; |
4643 | u32 wufc = adapter->wol; | |
6fdfef16 | 4644 | #ifdef CONFIG_PM |
240b1710 | 4645 | int retval = 0; |
6fdfef16 | 4646 | #endif |
1da177e4 LT |
4647 | |
4648 | netif_device_detach(netdev); | |
4649 | ||
2db10a08 AK |
4650 | if (netif_running(netdev)) { |
4651 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4652 | e1000_down(adapter); |
2db10a08 | 4653 | } |
1da177e4 | 4654 | |
2f82665f | 4655 | #ifdef CONFIG_PM |
1d33e9c6 | 4656 | retval = pci_save_state(pdev); |
2f82665f JB |
4657 | if (retval) |
4658 | return retval; | |
4659 | #endif | |
4660 | ||
1dc32918 | 4661 | status = er32(STATUS); |
96838a40 | 4662 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4663 | wufc &= ~E1000_WUFC_LNKC; |
4664 | ||
96838a40 | 4665 | if (wufc) { |
1da177e4 | 4666 | e1000_setup_rctl(adapter); |
db0ce50d | 4667 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4668 | |
4669 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4670 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4671 | rctl = er32(RCTL); |
1da177e4 | 4672 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4673 | ew32(RCTL, rctl); |
1da177e4 LT |
4674 | } |
4675 | ||
1dc32918 JP |
4676 | if (hw->mac_type >= e1000_82540) { |
4677 | ctrl = er32(CTRL); | |
1da177e4 LT |
4678 | /* advertise wake from D3Cold */ |
4679 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4680 | /* phy power management enable */ | |
4681 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4682 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4683 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4684 | ew32(CTRL, ctrl); |
1da177e4 LT |
4685 | } |
4686 | ||
1dc32918 | 4687 | if (hw->media_type == e1000_media_type_fiber || |
1532ecea | 4688 | hw->media_type == e1000_media_type_internal_serdes) { |
1da177e4 | 4689 | /* keep the laser running in D3 */ |
1dc32918 | 4690 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4691 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4692 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4693 | } |
4694 | ||
1dc32918 JP |
4695 | ew32(WUC, E1000_WUC_PME_EN); |
4696 | ew32(WUFC, wufc); | |
1da177e4 | 4697 | } else { |
1dc32918 JP |
4698 | ew32(WUC, 0); |
4699 | ew32(WUFC, 0); | |
1da177e4 LT |
4700 | } |
4701 | ||
0fccd0e9 JG |
4702 | e1000_release_manageability(adapter); |
4703 | ||
b43fcd7d RW |
4704 | *enable_wake = !!wufc; |
4705 | ||
0fccd0e9 | 4706 | /* make sure adapter isn't asleep if manageability is enabled */ |
b43fcd7d RW |
4707 | if (adapter->en_mng_pt) |
4708 | *enable_wake = true; | |
1da177e4 | 4709 | |
edd106fc AK |
4710 | if (netif_running(netdev)) |
4711 | e1000_free_irq(adapter); | |
4712 | ||
1da177e4 | 4713 | pci_disable_device(pdev); |
240b1710 | 4714 | |
1da177e4 LT |
4715 | return 0; |
4716 | } | |
4717 | ||
2f82665f | 4718 | #ifdef CONFIG_PM |
b43fcd7d RW |
4719 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
4720 | { | |
4721 | int retval; | |
4722 | bool wake; | |
4723 | ||
4724 | retval = __e1000_shutdown(pdev, &wake); | |
4725 | if (retval) | |
4726 | return retval; | |
4727 | ||
4728 | if (wake) { | |
4729 | pci_prepare_to_sleep(pdev); | |
4730 | } else { | |
4731 | pci_wake_from_d3(pdev, false); | |
4732 | pci_set_power_state(pdev, PCI_D3hot); | |
4733 | } | |
4734 | ||
4735 | return 0; | |
4736 | } | |
4737 | ||
64798845 | 4738 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4739 | { |
4740 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4741 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4742 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4743 | u32 err; |
1da177e4 | 4744 | |
d0e027db | 4745 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4746 | pci_restore_state(pdev); |
dbb5aaeb | 4747 | pci_save_state(pdev); |
81250297 TI |
4748 | |
4749 | if (adapter->need_ioport) | |
4750 | err = pci_enable_device(pdev); | |
4751 | else | |
4752 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4753 | if (err) { |
675ad473 | 4754 | pr_err("Cannot enable PCI device from suspend\n"); |
3d1dd8cb AK |
4755 | return err; |
4756 | } | |
a4cb847d | 4757 | pci_set_master(pdev); |
1da177e4 | 4758 | |
d0e027db AK |
4759 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4760 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4761 | |
c7be73bc JP |
4762 | if (netif_running(netdev)) { |
4763 | err = e1000_request_irq(adapter); | |
4764 | if (err) | |
4765 | return err; | |
4766 | } | |
edd106fc AK |
4767 | |
4768 | e1000_power_up_phy(adapter); | |
1da177e4 | 4769 | e1000_reset(adapter); |
1dc32918 | 4770 | ew32(WUS, ~0); |
1da177e4 | 4771 | |
0fccd0e9 JG |
4772 | e1000_init_manageability(adapter); |
4773 | ||
96838a40 | 4774 | if (netif_running(netdev)) |
1da177e4 LT |
4775 | e1000_up(adapter); |
4776 | ||
4777 | netif_device_attach(netdev); | |
4778 | ||
1da177e4 LT |
4779 | return 0; |
4780 | } | |
4781 | #endif | |
c653e635 AK |
4782 | |
4783 | static void e1000_shutdown(struct pci_dev *pdev) | |
4784 | { | |
b43fcd7d RW |
4785 | bool wake; |
4786 | ||
4787 | __e1000_shutdown(pdev, &wake); | |
4788 | ||
4789 | if (system_state == SYSTEM_POWER_OFF) { | |
4790 | pci_wake_from_d3(pdev, wake); | |
4791 | pci_set_power_state(pdev, PCI_D3hot); | |
4792 | } | |
c653e635 AK |
4793 | } |
4794 | ||
1da177e4 LT |
4795 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4796 | /* | |
4797 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4798 | * without having to re-enable interrupts. It's not called while | |
4799 | * the interrupt routine is executing. | |
4800 | */ | |
64798845 | 4801 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4802 | { |
60490fe0 | 4803 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4804 | |
1da177e4 | 4805 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4806 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4807 | enable_irq(adapter->pdev->irq); |
4808 | } | |
4809 | #endif | |
4810 | ||
9026729b AK |
4811 | /** |
4812 | * e1000_io_error_detected - called when PCI error is detected | |
4813 | * @pdev: Pointer to PCI device | |
120a5d0d | 4814 | * @state: The current pci connection state |
9026729b AK |
4815 | * |
4816 | * This function is called after a PCI bus error affecting | |
4817 | * this device has been detected. | |
4818 | */ | |
64798845 JP |
4819 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4820 | pci_channel_state_t state) | |
9026729b AK |
4821 | { |
4822 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4823 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4824 | |
4825 | netif_device_detach(netdev); | |
4826 | ||
eab63302 AD |
4827 | if (state == pci_channel_io_perm_failure) |
4828 | return PCI_ERS_RESULT_DISCONNECT; | |
4829 | ||
9026729b AK |
4830 | if (netif_running(netdev)) |
4831 | e1000_down(adapter); | |
72e8d6bb | 4832 | pci_disable_device(pdev); |
9026729b AK |
4833 | |
4834 | /* Request a slot slot reset. */ | |
4835 | return PCI_ERS_RESULT_NEED_RESET; | |
4836 | } | |
4837 | ||
4838 | /** | |
4839 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4840 | * @pdev: Pointer to PCI device | |
4841 | * | |
4842 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4843 | * resembles the first-half of the e1000_resume routine. | |
4844 | */ | |
4845 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4846 | { | |
4847 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4848 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4849 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4850 | int err; |
9026729b | 4851 | |
81250297 TI |
4852 | if (adapter->need_ioport) |
4853 | err = pci_enable_device(pdev); | |
4854 | else | |
4855 | err = pci_enable_device_mem(pdev); | |
4856 | if (err) { | |
675ad473 | 4857 | pr_err("Cannot re-enable PCI device after reset.\n"); |
9026729b AK |
4858 | return PCI_ERS_RESULT_DISCONNECT; |
4859 | } | |
4860 | pci_set_master(pdev); | |
4861 | ||
dbf38c94 LV |
4862 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4863 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4864 | |
9026729b | 4865 | e1000_reset(adapter); |
1dc32918 | 4866 | ew32(WUS, ~0); |
9026729b AK |
4867 | |
4868 | return PCI_ERS_RESULT_RECOVERED; | |
4869 | } | |
4870 | ||
4871 | /** | |
4872 | * e1000_io_resume - called when traffic can start flowing again. | |
4873 | * @pdev: Pointer to PCI device | |
4874 | * | |
4875 | * This callback is called when the error recovery driver tells us that | |
4876 | * its OK to resume normal operation. Implementation resembles the | |
4877 | * second-half of the e1000_resume routine. | |
4878 | */ | |
4879 | static void e1000_io_resume(struct pci_dev *pdev) | |
4880 | { | |
4881 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4882 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 JG |
4883 | |
4884 | e1000_init_manageability(adapter); | |
9026729b AK |
4885 | |
4886 | if (netif_running(netdev)) { | |
4887 | if (e1000_up(adapter)) { | |
675ad473 | 4888 | pr_info("can't bring device back up after reset\n"); |
9026729b AK |
4889 | return; |
4890 | } | |
4891 | } | |
4892 | ||
4893 | netif_device_attach(netdev); | |
9026729b AK |
4894 | } |
4895 | ||
1da177e4 | 4896 | /* e1000_main.c */ |